FORM-2
THE PATENTS ACT, 1970
(39 of 1970)
&
THE PATENTS RULES, 2003
COMPLETE SPECIFICATION
(See section 10 and rule 13)
SELF-ADJUSTMENT MECHANISM FOR VEHICLE HEADLAMPS
MAHINDRA TWO-WHEELERS LIMITED,
An Indian Company,
of Dl Block, Plot No. 18/2 (Part),MH)C, Chinchwad,
Pune-411019
Maharashtra, India.
THE FOLLOWING SPECIFICATION PARTICULARLY DESCRIBES THE NATURE OF THE INVENTION AND THE MANNER IN WHICH IT IS TO BE PERFORMED.

FIELD OF DISCLOSURE
The present disclosure relates to headlamps for motor vehicles. More particularly, the present disclosure relates to a headlamp self-adjusting mechanism for adjusting the headlamp of a two-wheeler vehicle such as a motorcycle or a scooter or any other two wheeled vehicle about a true vertical axis and also about a true longitudinal axis.
DEFINITION:
True vertical axis: True vertical axis is the axis that is perpendicular to the ground passing through the bulb centre.
True longitudinal axis: True longitudinal axis is the axis that is parallel to the ground passing thorough the bulb centre.
BACKGROUND
A headlamp is generally mounted on a handle bar ami the handle bar is mounted on a fork of a two-wheeler and rotates along with the handle bar as the handle bar is steered about an axis to steer the two-wheeler. However, in case of conventional two-wheelers, the handle bar as well as the headlamp mounted thereon steers about an axis that is inclined at a caster. Accordingly, a beam of light projected by the headlamp of the two-wheeler vehicle is not well directed for efficiently illuminating in front of the two-wheeler during turning. However, such illumination defects arising due to an inherent construction of the fork bars are inevitable. In case the headlamp is not mounted on the handle bar and is mounted on a fairing, i.e. in case of a fixed headlamp, the headlamp remains fixed/stationary irrespective of the orientation of the handle bar and the direction of travel of the two-wheeler vehicle during steering, thereby failing to effectively illuminate in front of the two-wheeler vehicle as the two-wheeler vehicle is steered and making the illumination of the headlamp in-sufficient.

Further, while the two-wheeler gets tilted with respect to the ground and is not in vertical configuration, for example, while turning, the headlamp of the two-wheeler fails to follow the angle of tilt of the vehicle i.e. it does not have correction due to the tilting of the two-wheeler, thereby not illuminating in front of the two-wheeler vehicle sufficiently as the two-wheeler vehicle is tilted while steering. Accordingly, there is a need for a self-adjusting mechanism that adjusts the headlamp with respect to a true vertical axis as well as the true longitudinal axis corresponding to any change in the direction of travel and orientation of the two-wheeler vehicle respectively during steering of the two-wheeler vehicle, thereby always maintaining the front portion of the two-wheeler sufficiently illuminated, irrespective of the change in the direction of travel and orientation of the two-wheeler during steering. More specifically, there is a need for a self-adjusting mechanism that facilitates angular displacement of the headlamp about a true vertical axis and a true longitudinal axis, thereby eliminating the drawbacks associated with the fixed headlamps of the prior art. A turning angle of a headlamp is required to be corrected in response to the change in the direction of travel and orientation of the two-wheeler. Accordingly, there is a need for an arrangement that controls the angular correction of the headlamp of the two-wheeler about a true vertical axis and a true longitudinal axis in response to the changed direction of travel and orientation of the two-wheeler respectively during steering of the two-wheeler.
Some of the prior art discloses self-adjustment mechanisms for correcting the turning angle of a headlamp only with respect to a true vertical axis in response to steering of the two-wheeler vehicle, while other prior art discloses self-adjustment mechanisms for correcting the turning angle of a headlamp only with respect to a true longitudinal axis in response to the tilting of the two-wheeler vehicle during steering. However, none of the prior art disclose an arrangement for correcting the turning angle of a headlamp with respect to a true vertical and a true longitudinal axis in response to the change in the direction of travel and orientation of the vehicle respectively during steering of the vehicle.

More specifically, there is a need for a self-adjusting mechanism that facilitates angular displacement of the headlamp about a true vertical axis passing through a focal point of the reflectors of the headlamp where a light source is disposed, in response to any turning of the handle bar for causing the steering of a two:wheeler vehicle, thereby eliminating the drawbacks associated with the fixed headlamps of the prior art. A turning angle of a headlamp is required to be sensitive to change with a change in the turning angle of the handle bar i.e. the steering angle, for achieving an efficient illumination in front during steering. Further, there is a need for adjusting the sensitivity of a headlamp turning angle with respect to the turning angle of the handle bar i.e. the steering angle. More specifically, depending upon the requirement, the ratio of the headlamp turning angle with respect to the handle bar turning angle is required to be controlled to facilitate adoption of the same system on other vehicles models where the vehicle design parameters such as steering angle changes. Accordingly, there is a need for an arrangement that controls the sensitivity of the headlamp turning angle to the turning angle of the handle bar i.e. the steering angle.
Some of the prior art discloses self-adjustment mechanisms for correcting the turning angle of the headlamp with respect to a true vertical axis in response to swivelling of the handle bar for steering of the two-wheeler vehicle, with the help of motors and switches powered by dedicated power source for actuation thereof, thereby making the arrangement complex, expensive, and less reliable.
Accordingly, there is also a .need for a self-adjusting mechanism for correcting the turning angle of the headlamp with respect to a true vertical axis and a true longitudinal axis in response to a change in the direction of travel and orientation of the vehicle respectively during steering of the vehicle. Further, there is a need for a self-adjusting mechanism for correcting the turning angle of the headlamp with respect to a true vertical axis and a true longitudinal axis that utilizes simple mechanical linkages for actuation

thereof. Furthermore, there is a need for a self-adjusting mechanism for correcting the turning angle of the headlamp with respect to a true vertical axis and a true longitudinal axis that is simple in construction, economical, effective and reliable.
OBJECTS
Some of the objects of the present disclosure, which at least one embodiment is adapted to provide, are described herein below:
It is an object of the present disclosure to ameliorate one or more problems of the prior art or to at least provide a useful alternative.
An object of the present disclosure is to provide a self-adjusting mechanism for adjusting the headlamp of a two wheeler vehicle with respect to a true vertical axis and a true longitudinal axis in response to a change in the direction of travel and orientation of the vehicle respectively during steering of the vehicle.
Another object of the present disclosure is to provide a self-adjusting mechanism for adjusting the headlamp of a two wheeler vehicle for facilitating effective illumination in
front of the two-wheeler vehicle, irrespective of the change in the direction of travel and orientation of the two-wheeler vehicle during steering.
Another object of the present disclosure is to provide a self-adjusting mechanism for adjusting the headlamp of a two wheeler vehicle with respect to a true vertical axis, thereby eliminating the drawbacks associated with the headlamp rotating about any other non-perpendicular axis with respect to the ground.

Still another object of the present disclosure is to provide a self-adjusting mechanism for adjusting the sensitivity of the headlamp turning angle with respect to the turning angle of the handle bar or the steering system i.e. the steering angle.
Another object of the present disclosure is to provide an adjusting mechanism for controlling the ratio of the headlamp turning angle with respect to the handle bar turning angle to facilitate adoption of the same system on other vehicles models where vehicle design parameters such as steering angle geometry may changes.
Another object of the present disclosure is to provide a self-adjusting mechanism for a headlamp that is mechanically operated by simple mechanical linkages, thereby eliminating the need for motor, switches, a dedicated power source and the like for actuation thereof.
Yet another object of the present disclosure is to provide a self-adjusting mechanism for the headlamp of a two wheeler that is simple in construction.
Still another object of the present disclosure is to provide a self-adjusting mechanism, for the headlamp, that is reliable.
Other objects and advantages of the present disclosure will be more apparent from-the following description when read in conjunction with the accompanying figures, which are not intended to limit the scope of the present disclosure.
SUMMARY
A self-adjusting headlamp system for a two-wheeler vehicle steerable by a handle bar is disclosed in accordance with an embodiment of the present disclosure. The self-adjusting headlamp system includes a mechanically angularly displaceable headlamp assembly

mounted on an operative front frame portion of the two-wheeler vehicle. The mechanically angularly displaceable headlamp assembly gets angularly displaced by mechanical linkages in response to the displacement of the handle bar.
Typically, the mechanically angularly displaceable headlamp assembly includes a headlamp support bracket and an actuating means, wherein the headlamp support bracket includes a pair of arms extending opposite to each other from a longitudinal median plane to define a pivot axis and pivotably support a headlamp there-between and the actuating means is functionally coupled to the headlamp and is adjustably disposed between the headlamp and the headlamp support bracket to facilitate adjusting of the headlamp with respect to the headlamp support bracket and facilitate angular displacement of the headlamp about the pivot axis.
Generally, the actuating means is supported between a plug element configured on the headlamp and a pin element adjustably received in a slot configured on a base of the headlamp support bracket such that the position of the pin element is varied along the length of the slot for achieving headlamp levelling.
Typically, the mechanical linkages facilitates coupling between the handle bar and the headlamp.
Generally, the mechanically angularly displaceable headlamp assembly further includes a sensitivity adjustment mechanism, wherein the sensitivity adjustment mechanism adjusts the sensitivity of the headlamp turning with respect to the steering angle of the handle bar and includes an adjusting lever and a connecting pin, wherein the adjusting lever has a plurality of slots configured thereon, wherein each slot receives an actuating cable of the actuating assembly, wherein the actuating cable transmits the steering motion of the handle bar to the adjusting lever and the connecting pin is functionally coupled to' the headlamp support bracket and the adjusting lever for facilitating functional coupling of

the adjusting lever with the headlamp supporting bracket, thereby transmitting the steering motion of the handle bar to the headlamp supporting bracket via the adjusting lever to cause adjustment of the headlamp by a corresponding turning angle.
Typically, the mechanical linkages include a steering lever and at least one actuating cable, wherein the steering lever is functionally coupled to the handle bar and the headlamp of the two-wheeler vehicle. At least one actuating cable is supported on the operative front frame portion and functionally couples the steering lever to the adjusting lever for facilitating adjustment of the headlamp in response to steering of the handle bar.
Typically, at least one actuating cable selectively engages with a slot of the plurality of slots configured on the adjusting lever to define the ratio of the headlamp turning angle to the steering angle of the handle bar as equal to one.
Alternatively, the at least one actuating cable selectively engages with a slot of the plurality of slots configured on the adjusting lever to define the ratio of the headlamp turning angle to the steering angle of the handle bar as less than one.
Further, at least one actuating cable selectively engages with a slot of the plurality of slots configured on the adjusting lever to define the ratio of the headlamp turning angle to the steering angle of the handle bar as greater than one.
Preferably, the self-adjusting headlamp system further includes a cover and a fairing for concealing constructional elements of the self-adjusting headlamp system.
Typically, the headlamp is a projector type headlamp.
Alternatively, the headlamp is a reflector type headlamp.

Typically, the self-adjusting headlamp system further includes a frame structure functionally coupled to the front frame portion, wherein the frame structure includes a central plate and a pair of connecting plates secured thereto, wherein the frame structure facilitates adjustable mounting of the mechanically angularly displaceable headlamp assembly with respect to the front frame portion of the two-wheeler vehicle.
Generally, the headlamp support bracket adjustably supports a dead weight for utilizing gravitational force acting on the dead weight for the tilting of the angularly displaceable headlamp assembly.
In accordance with one embodiment, the headlamp support bracket supports an auxiliary bracket for facilitating functional coupling of the headlamp supporting bracket with the adjusting lever.
Typically, the headlamp support bracket has at least one slot configured thereon for facilitating the connection of a levelling bracket thereto via a pin element.
BRIEF DESCRIPTION OF THE ACCOMPANYING DRAWINGS:
The objects and features of the present disclosure will be more clearly understood from the following description of the disclosure taken in conjunction with the accompanying drawings, in which,
Figure 1 illustrates a perspective view of a front frame portion of a conventional two-wheeler vehicle;
Figure 2 illustrates a perspective view of the typical front frame portion of Figure 1 with a frame structure of a self-adjusting headlamp system secured thereto in accordance with an embodiment;

Figure 3 illustrates a perspective view of a typical mechanically angularly displaceable headlamp assembly mounted on the frame structure of the self-adjusting headlamp system and actuated by the actuation assembly of the self-adjusting headlamp system;
Figure 4 illustrates a perspective view of a headlamp pivotally supported between spaced apart arms of the headlamp supporting bracket of the mechanically angularly displaceable headlamp assembly of Figure 3;
Figure 5a illustrates a perspective view of a headlamp of Figure 4;
Figure 5b illustrates another perspective view of the headlamp of Figure 5a;
Figure 5c illustrates a typical projector headlamp without chrome finished plastic cover and fairing adjusted by the self-adjusting headlamp system;
Figure 5d illustrates the projector headlamp of Figure 5c provided with chrome finished plastic cover;
Figure 5e illustrates a side view of the projector headlamp with chrome finished plastic cover of Figure 5d, wherein the chrome finished plastic cover is provided with a cut out configured thereon for facilitating electrical connection to the projector headlamp;
Figure 5f illustrates an isometric view of the projector headlamp with chrome finished plastic cover of Figure 5d;
Figure 6a illustrates a perspective view of the headlamp of Figure 5apivotally supported between the pair of spaced apart arms of the headlamp supporting bracket of the mechanically angularly displaceable headlamp assembly of Figure 4;

Figure 6b illustrates a perspective view of the headlamp supporting bracket of Figure 6a;
Figure 7a illustrates a perspective view depicting the connection between the headlamp supporting bracket of Figure 6b with an adjusting lever by means of a connecting pin;
Figure 7b illustrates an enlarged perspective view of the connecting pin of Figure 7a;
Figure 8a illustrates an isometric view of an typical adjusting lever for adjusting the sensitivity of the headlamp turning angle to the handle bar turning angle or handle bar;
Figure 8b illustrates the engagement of a free end of the connecting pin of Figure 7a with the adjusting lever of Figure 8a;
Figure 9a illustrates a schematic representation of a frame structure of the the self-adjusting headlamp system;
Figure 9b illustrates a typical support structure in accordance with another embodiment, wherein the support structure supports a bezel for concealing the internal construction of the self-adjusting headlamp system;
Figure 9c illustrates another view of the support structure of Figure 9b;
Figure 9d illustrates a schematic representation depicting the mechanically angularly displaceable headlamp assembly with the reflector headlamp supported thereby and mounted on the frame structure of Figure 9a;

Figure 9e illustrates a schematic representation depicting a mechanically angularly displaceable headlamp assembly with the projector headlamp supported thereby and mounted on the frame structure of Figure 9b and Figure 9c;
Figure 9f illustrates another view of the mechanically angularly displaceable headlamp assembly with the projector headlamp supported thereby and mounted on the frame structure;
Figure 10a illustrates a schematic representation of the frame structure with connecting plates and a central plate mounted thereon for facilitating the mounting of the frame structure to the front frame portion of the two-wheeler vehicle;
Figure 10b illustrates the frame structure of Figure 10a mounted on the front frame portion of the two wheeler vehicle;
Figure 11a illustrates a schematic representation of the frame structure of Figure 10a with a pair of bracket members configured thereon for facilitating the adjustment of the position of the mechanically angularly displaceable headlamp assembly mounted on a main bracket with respect to the frame structure;
Figure lib illustrates aschematic representation depicting the main bracket for supporting the mechanically angularly displaceable headlamp assembly thereon adjustably secured to a pair of bracket members of the frame structure;
Figure 12a illustrates a schematic representation of the frame structure of Figure 10a with the main bracket for supporting the mechanically angularly displaceable headlamp assembly and a central plate mounted thereon;
Figure 12b illustrates a schematic representation of the main bracket;

Figure 13 illustrates a schematic representation of the frame structure of Figure 10a with cable supporting plates mounted thereon;
Figure 14a illustrates a schematic representation of a ball bearing held within a mounting
plate secured on the underside of the main bracket for facilitating mounting of the ball
bearing on the underside of the main bracket of the frame structure of Figure 12a;
Figure 14b illustrates the mounting plate for holding the ball bearing of Figure 14a;
Figure 15a illustrates a schematic representation of a steering lever mounted on a handle bar of the two wheeler vehicle and rotating about a steering axis;
Figure 15b illustrates the front portion of the two wheeler vehicle with the steering lever of Figure 15a mounted on the handle bar thereof;
Figure 15c illustrates an isometric view of the steering lever of Figure 15b;
Figure 16 illustrates a schematic representation of the mechanical linkages actuated by the cables supported by the frame structure for transmitting torque from the steering lever of Figure 15c to the headlamp supporting bracket via the adjusting lever and the connecting pin;
Figure 17 illustrates a perspective view of the front frame portion of a conventional two-wheeler vehicle illustrated in Figure 1 with the actuation assembly mounted thereon in accordance with an embodiment;
Figure 18a illustrates a perspective view of a mechanically angularly displaceable headlamp assembly supporting a regular reflector headlamp in accordance with another embodiment;

Figure 18b illustrates a perspective view of a mechanically angularly displaceable headlamp assembly of Figure 18a supporting a projector headlamp instead of the regular reflector headlamp as illustrated in Figure 18a;
Figure 18c illustrates another view of the mechanically angularly displaceable headlamp assembly of Figure 18b;
Figure 19a illustrates a schematic representation of the mechanically angularly displaceable headlamp assembly of Figure 18a with an auxiliary bracket for holding the longitudinal angularly displaceable headlamp assembly mounted thereon;
Figure 19b illustrates the auxiliary bracket for holding the longitudinal mechanically angularly displaceable headlamp assembly of Figure 19a;
Figure 20 illustrates a perspective view of a longitudinal mechanically angularly displaceable headlamp assembly in accordance with another embodiment;
Figure 21a illustrates a perspective view, of the longitudinal mechanically angularly displaceable headlamp assembly of Figure 20, without the leveling bracket member and dead weight;
Figure 21b illustrates a perspective view of a headlamp supporting bracket of Figure 21a;
Figure 22a illustrates a perspective view of the headlamp supporting bracket along with a leveling bracket for leveling the headlight;
Figure 22 b illustrates an enlarged perspective view of the levelling bracket of Figure 22a for levelling the head light;

Figure 23a illustrates an isometric view depicting the connection between the leveling bracket of Figure 22a and the headlamp supporting bracket of Figure 21a;
Figure 23b illustrates an enlarged view of the connection pin used for connecting the leveling bracket of Figure 22a and the headlamp supporting bracket of Figure 21a;
Figure 24 illustrates a dead weight mounted on the headlamp supporting bracket of Figure 21a.
Figure 25a - Figure 25c illustrate different configurations of the projector headlamp, a bezel and a plastic cover during different steering configurations of the handle bar;
Figure 26a - Figure 26c illustrate a side view, a front view and an enlarged front view of the front portion of the two-wheeler vehicle equipped with the self-adjusting headlamp system for adjusting the projector headlamp during steering of the handle bar; and
Figure 27a - Figure 27c illustrate different configurations of the elements of the mechanically angularly displaceable headlamp assembly, particularly, the projector headlamp, the bezel and the plastic cover during different steering configurations of the handle bar.
DETAILED DESCRIPTION
The disclosure will now be described with reference to the accompanying drawings which do not limit the scope and ambit of the disclosure. The description provided is purely by way of example and illustration.
The embodiments herein and the various features and advantageous details thereof are explained with reference to the non-limiting embodiments in the following description.

Descriptions of well-known components and processing techniques are omitted so as to not unnecessarily obscure the embodiments herein. The examples used herein are intended merely to facilitate an understanding of ways in which the embodiments herein may be practiced and to further enable those of skill in the art to practice the embodiments herein. Accordingly, the examples should not be construed as limiting the scope of the embodiments herein.
The foregoing description of the specific embodiments will so fully reveal the general nature of the embodiments herein that others can, by applying current knowledge, readily modify and/or adapt for various applications such specific embodiments without departing from the generic concept, and, therefore, such adaptations and modifications should and are intended to be comprehended within the meaning and range of equivalents of the disclosed embodiments. It is to be understood that the phraseology or terminology employed herein is for the purpose of description and not of limitation. Therefore, while the embodiments herein have been described in terms of preferred embodiments, those skilled in the art will recognize that the embodiments herein can be practiced with modification within the spirit and scope of the embodiments as described herein.
Therefore, while the embodiments herein have been described in terms of. preferred embodiments, those skilled in the art will recognize that the embodiments herein can be practiced with modification within the spirit and scope of the embodiments as described herein.
The self-adjusting mechanism for headlamp in accordance with an embodiment includes a mechanically angularly displaceable headlamp assembly and an actuating assembly. The mechanically angularly displaceable headlamp assembly is mounted on the frame structure of the actuating assembly. The actuating assembly actuates the mechanically angularly displaceable headlamp assembly to adjust a headlamp that is pivotally supported between spaced apart arms of a headlamp supporting bracket of the

mechanically angularly displaceable headlamp assembly in response to steering of the two wheeler vehicle, thereby facilitating rotation of a headlamp supported between the arms of the headlamp holding bracket with respect to the true vertical axis in response to steering of the handle bar of the two wheeler vehicle. Such a configuration facilitates in maintaining the front of the two wheeler vehicle effectively illuminated, even during steering of the two wheeler vehicle.
Figure 1 illustrates a front frame portion 100 of a conventional two wheeler vehicle. Figure 2 illustrates the front frame portion 100 with a frame structure 50 for a self-adjusting headlamp system for a two-wheeler vehicle mounted thereon. The front frame portion 100 includes a handle bar or steering system 10, a speedometer console 20, a pair of fork bars 30, a front wheel 40 supported between the pair of fork bars 30. The support structure/ fixed frame/dome 50 provide support to the mechanical linkages and are secured to the front frame portion 100 of the two wheeler vehicle. More specifically, the self-adjusting headlamp system includes a support structure/ fixed frame/dome 50 configured from brackets and tubes to facilitate adjustment of the self-adjusting headlamp system with respect to the front frame portion 100 of the two wheeler. The mechanical linkages include a cable harness supported on the frame structure / support structure 50 for supporting a plurality of actuating cables. The plurality of cables facilitates the self-adjustment of the headlamp 62 in response to steering of the handle bar 10 of the two-wheeler vehicle. More specifically, one extreme end of each of the cables is connected to the headlamp while the other extreme end of the cables are connected to the steering system, particularly the handle-bar of the two wheeler vehicle and as the handle-bar of the two-wheeler is steered, cables transmit the forces to the headlamp to cause turning of the headlamp 62 by an angle corresponding to the handle-bar steering. Further, the self-adjusting headlamp system can be used for adjusting a projector headlamp 262 instead of a regular reflector headlamp 62. The self-adjusting headlamp system is more effective in adjusting the projector headlamp 262 because of the advantages associated with its use, more specifically, the projector headlamp 262 is smaller in size, easy to package and is

aesthetically more appealing than the regular reflector headlamp 62. Further, a chrome finished plastic cover, bezel and fairing 268 is used along with the projector headlamp 262 for concealing the internal construction of the self-adjusting headlamp. Figure 5c illustrates an isometric view of the projector headlamp 262 that may be adjusted by the self-adjusting headlamp system. As illustrated in Figure 5c, the projector headlamp 262 includes a body portion 263 and a transparent lens 264. The projector headlamp 262 is illustrated without chrome finished plastic cover and fairing.
Figure 3 illustrates a mechanically angularly displaceable headlamp assembly 60 supporting a headlamp 62 and mounted on a support structure/ fixed frame/dome 50 and actuated by the actuation assembly. Figure 4 illustrates the headlamp 62 pivotally supported by the mechanically angularly displaceable headlamp assembly 60. Referring to Figure 3 and Figure 4, the mechanically angularly displaceable headlamp assembly 60 includes a headlamp supporting bracket 64 and an actuating means (not illustrated in Figures). The self-adjusting headlamp system further includes a sensitivity adjustment mechanism, wherein the sensitivity adjustment mechanism includes an adjusting lever 66 and a connecting pin 68. The headlamp supporting bracket 64 includes a pair of spaced apart arms 64a and 64b and a base 64c. More specifically, the headlamp supporting bracket 64 includes a pair of arms 64a and 64b extending opposite to each other from a longitudinal median plane to define a pivot axis and pivotably supporting a headlamp 62 -there-between. The headlamp 62 is pivotally supported between spaced apart arms 64a and 64b of the headlamp supporting bracket 64 of the mechanically angularly displaceable headlamp assembly 60. The headlamp 62 is adapted to be angularly adjusted by an actuating means (not shown in figures), particularly an actuating rod, one end of the actuating rod is connected to the headlamp 62 while the free end of the actuating rod includes a pin element "P" (not shown in figures) that is securely locked in a desired position inside a longitudinal extending slot 69 configured on the base 64c of the headlamp supporting bracket 64. The pin element "P" is adapted to rotate about an axis thereof for causing angular movement of the actuating rod, thereby causing angular

rotation of the headlamp 62 secured to the other end of the actuating rod along an axis or rotation "A-A"' depicted in Figure 4. Referring to Figure 4, the headlamp 62 includes a plug element 63 for receiving and securely holding one end of the actuating rod. The position of the pin member can be varied along the length of the longitudinal extending slot 69 for achieving the headlamp levelling, particularly for adjusting the light beam projected on the road. Figure 5a and Figure 5b illustrate different views of the headlamp 62. Figure 5c illustrates the projector headlamp 262 without chrome finished plastic cover and fairing. Figure 5d illustrates the projector headlamp 262 with chrome finished plastic cover 265. Figure 5e and Figure 5f illustrate the projector headlamp 262 with chrome finished plastic cover 265, wherein the chrome finished plastic cover 265 is provided with a cut out configured thereon for facilitating electrical connection to the projector headlamp 262. Figure 6a illustrates the headlamp 62 pivotally supported between the pair of spaced apart arms 64a and 64b of the headlamp supporting bracket 64 of the mechanically angularly displaceable headlamp assembly 60. Figure 6b illustrates an isometric view of the headlamp supporting bracket 64. As illustrated in Figure 6b, the base 64c of the headlamp supporting bracket 64 has the longitudinal extending slot 69 configured thereon.
The self-adjusting headlamp system also includes an arrangement for selecting and adjusting the sensitivity of the headlamp turning angle with respect to the turning angle of the handle bar i.e. the steering angle. More specifically, an operative underside of the base 64c includes the pin, also referred to as the connecting pin 68 secured thereto. The pin 68 includes a free end that is adapted to engage with different slots configured along the length of the adjusting lever 66 for facilitating the adjustment of the sensitivity of the headlamp turning angle to the turning angle of the handle bar i.e. the steering angle. Figure 7a illustrates the connection between the headlamp supporting bracket 64 and the adjusting lever 66 by means of the connecting pin 68. Figure 7b illustrates an enlarged view of the connecting pin 68. Referring to Figure 7b of the accompanying drawings, the connecting pin 68 includes a flat head portion. The flat head portion of the connecting pin

68 includes a plurality of holes 68a configured thereon. The base 64c of the headlamp supporting bracket 64 also includes a plurality of holes 64d configured thereon. The holes 68a configured on the flat head portion of the connecting pin 68 register with the holes 64d configured on the base 64c of the headlamp supporting bracket 64 for facilitating passage of bolts there-through, thereby securing the flat head portion of the connecting pin 68 to the underside of the base 64c of the headlamp supporting bracket 64. Although bolts are used for securing the flat head portion of the connecting pin 68 to the underside of the base 64c of the headlamp supporting bracket 64 in accordance with an embodiment, the present disclosure is not limited to any particular method for securing the flat head portion of the connecting pin 68 to the underside of the base 64c of the headlamp supporting bracket 64. The free end of the connecting pin 68 includes an engaging member 68b that will engage with the different slots configured on the adjusting lever 66 for facilitating the adjustment of the sensitivity of the headlamp turning angle to the turning angle of the handle bar i.e. the steering angle.
Referring to Figure 8a and Figure 8b, the figures illustrate the use of the adjusting lever 66 with different slots configured along the length thereof for adjusting the sensitivity of the headlamp turning angle to the turning angle of the handle bar i.e. the steering angle. More specifically, the actuating cable engages with either of the slots 66a', 66a, 66b or 66c configured along the length the adjusting lever 66 for changing the sensitivity of the headlamp turning angle to the turning angle of the handle bar i.e. the steering angle. For example, in case the actuating cable engages with slot 66a' or 66a configured on the adjusting lever 66, the ratio of the headlamp turning angle to the steering angle is less than one, in case the actuating cable engages with slot 66b configured on the adjusting lever 66, the ratio of the headlamp turning angle to the steering angle is equal to one, i.e. an angular movement of the handle bar by one degree will cause the angular movement of the headlamp by one degree and in case the actuating cable engages with slot 66c configured on the adjusting lever 66, the ratio of the headlamp turning angle to the steering angle is greater than one. Accordingly, depending upon the requirement, the

sensitivity of the headlamp turning angle with respect to the turning angle of the handle bar i.e. the steering angle can be adjusted by changing the engagement of the actuating cable with the slots configured on the adjusting lever 66. The ratio of the headlamp turning angle to the steering angle, in case the actuating cable engages with slot 66a, is lesser than the ratio of the headlamp turning angle to the steering angle in case the actuating cable engages with slot 66a'.
Figure 9a illustrates the support structure 50 of the self-adjusting headlamp system. The support structure/ fixed frame/dome 50 is configured from brackets and tubes and is capable of supporting a plurality of cables of the actuating assembly. The actuating assembly, particularly, the plurality of cables facilitate functional coupling between the handle-bar and the headlamp support bracket, thereby facilitating the self-adjustment of the headlamp 62 in response to the steering of the handle bar 10. More specifically, one extreme end of each of the cables is connected to the headlamp support bracket while the other extreme end of the cable is connected to the handle bar 10 of the handle bar of the two wheeler vehicle. Figure 9b and Figure 9c illustrate a support structure 250 in accordance with another embodiment, wherein the support structure 250 supports a bezel 252 for concealing the internal construction of the self-adjusting headlamp system. Figure 9d illustrates a main bracket 52 secured to the frame structure 50 and on which the mechanically angularly displaceable headlamp assembly 60 with the reflector headlamp 62 supported thereon can be mounted. Figure 9e illustrates a schematic representation depicting a mechanically angularly displaceable headlamp assembly 260 with the projector headlamp 262 supported thereby and mounted on the frame structure/support structure 250. Figure 9f illustrates another view of the mechanically , angularly displaceable headlamp assembly 260. Referring to Figure 9a, Figure 9d, Figure 10a and Figure 10b the frame structure 50 includes a plurality of connecting members/plates for facilitating securing of the frame structure 50 to the front frame portion 100 of the two wheeler vehicle, particularly, the frame structure 50 includes a pair of connecting plates 54a and 54b disposed at the end of the frame structure 50 and a

central plate 56 disposed centrally of the frame structure 50. The pair of connecting plates 54a and 54b include holes for facilitating securing of the frame structure 50 to the front frame portion 100 of the two wheeler vehicle. The central plate 56 may be mounted on the frame structure 50 at one end and welded to the front frame portion 100 of the two wheeler vehicle for facilitating securing of the frame structure 50 to the front frame portion 100 of the two wheeler vehicle. Figure 10b illustrates the frame structure 50 mounted on the front frame portion 100 of the two wheeler vehicle. Referring to Figure 10b, the central plate 56 of the frame structure 50 is welded to a portion of the front frame portion 100 marked "W" and the connecting plates 54a and 54b of the frame structure 50 are bolted to the portion of the front frame portion 100 marked "B".
The frame structure 50 includes means for adjusting the position of the main bracket 52,-thereby facilitating the adjustment of the position of the headlamp 62 of the mechanically angularly displaceable headlamp assembly 60 mounted on the main bracket 52 with respect to the frame structure secured to the front frame portion 100 of the two wheeler vehicle depending upon various configurations of the two-wheeler vehicles on which such self-adjustment mechanism is configured and different configurations of the headlamp 62. Figure 11a illustrates the frame structure with a pair of bracket members 57 configured thereon for facilitating the adjustment of the position of the mechanically angularly displaceable headlamp assembly 60 mounted on a main bracket 52 with respect to the frame structure 50. More specifically, the main bracket 52 on which the mechanically angularly displaceable headlamp assembly 60 can be mounted includes a plurality of holes 52a configured thereon that registers with another set of holes 53. configured on the bracket members 57 of the frame structure 50 for adjusting the position . of the main bracket 52 with the headlamp 62 supported thereby with respect to the frame structure 50 and the front frame portion 100 of the two wheeler vehicle. Typically, the holes 53 configured on the bracket members 57 and the holes 52a configured on the main bracket 52 are about 20 mm spaced apart from adjacent holes. Figure 12a illustrates a schematic representation of the frame structure 50 with themain bracket 52 for supporting

the mechanically angularly displaceable headlamp assembly 60 and a central plate 56 mounted thereon. Figure 12b illustrates a schematic representation of the main bracket 52.
The frame structure 50 also supports a cable harness for supporting a plurality of cables that facilitate the self-adjustment of the headlamp 62 in response to the steering of the handle bar 10. Figure 13 illustrates a schematic representation of the frame structure 50 with the cable supporting plates 63a and 63b mounted thereon. The cable supporting plates 63a and 63b are provided with apertures that in turn hold insulation 62a and 62b respectively for proper handling of the actuating cables 61a and 61b respectively. Each cable 61a and 61b has two ends, wherein the first extreme end of each of the cable is connected to the adjusting lever 66 which in turn facilitates turning of the headlamp while the other extreme end of the cable is connected to the handle-bar of the .two wheeler vehicle via the steering lever 70.
The frame structure 50 includes a mounting plate 65for facilitating mounting of the mechanically angularly displaceable headlamp assembly 60 on the main bracket 52 of the frame structure. The mounting plate 65 supports a bearing 67, particularly a ball bearing 67 that is mounted on the underside of the main bracket 52 of the frame structure 50. Figure 14a-illustrates a ball bearing 67 held in the mounting plate 65 secured to an underside of themain bracket 52 for mounting the ball bearing 67 on the main bracket 52 of the frame structure 50. Figure 14b illustrates the ball bearing 67 held in the mounting plate 65. More specifically, the main bracket 52 includes a plurality of holes 52b configured thereon and the mounting plate 65 holding theball bearing 67 also includes a plurality of holes 65a configured thereon such that the holes 65a on the mounting plate 65 holding the ball bearing 67 register with the holes 52b on the main bracket 52 for facilitating the passage of bolts there through and securing the ball bearing 67 to the underside of the main bracket 52. The ball bearing 67 supports the pin member "P" (not shown in figures) and facilitates rotation thereof along its axis, the rotating pin member

"P" in turn actuates the headlamp 62 supported by the mechanically angularly displaceable headlamp assembly 60.
The self-adjusting headlamp system further includes a steering lever 70 that is mounted on to a handle-bar of the two wheeler vehicle and is angularly displaceable about a steering axis. Figure 15a illustrates the steering lever 70 mounted on to the handle-bar of the two wheeler vehicle. Figure 15b illustrates the front portion of the two wheeler vehicle with the steering lever 70 mounted on the handle-bar thereof. The steering lever 70 undergoes angular displacement about the steering axis as the handle bar 10 is angularly displaced. Figure 15c illustrates the steering lever 70. Referring to Figure 15c, the steering lever 70 includes apertures 72 and 74 for facilitating securing of the steering lever 70 to the handle-bar of the two-wheeler. The lever further includes slots 76 and 78 configured thereon for receiving cables of the actuation assembly. Referring to Figure 16, the steering lever 70 gets angularly displaced in response to the angular displacement of the handle bar 10. As the steering lever 70 undergoes angular displacement, a cable 61a connected to one end of the steering lever 70 at aperture/slot 78 gets pulled, the other end of the cable 61a is connected to the lever 66 also gets pulled to cause angular displacement of the adjusting lever 66, as the adjusting lever 66 undergoes angular displacement the connecting pin 68 connecting the adjusting lever 66 to the base portion 64c of the headlamp supporting bracket 64 transmits the angular displacement of the adjusting lever 66 to the headlamp supporting bracket 64, thereby causing angular displacement of the headlamp 62 supported between arms of the headlamp supporting bracket 64. Similarly, as the steering lever 70 undergoes, angular displacement, as described earlier, the cable 61b connected to the other end of the steering lever 70 at aperture 76 gets pushed, and the other end of the cable 61b, connected to the adjusting lever 66, also gets pushed, thereby causing angular displacement of the adjusting lever 66.

The self-adjusting headlamp system in accordance with another embodiment enables the headlamp to be self-adaptive to different conditions, particularly to adjust in response to a change in the direction of travel and change in the orientation of the two-wheeler vehicle during steering. The self-adjusting headlamp system enables self-adjustment of the headlamp by rotation thereof along the vertical and longitudinal axis in response to a change in the direction of travel and change in orientation thereof during steering of the two-wheeler vehicle.
The self-adjusting headlamp system in accordance with an embodiment includes a mechanically angularly displaceable headlamp assembly, a frame support structure for supporting the mechanically angularly displaceable headlamp assembly and the cables used for actuating the mechanically angularly displaceable headlamp assembly and a . dead weight for tilting of the mechanically angularly displaceable headlamp assembly. ... The tilting of the mechanically angularly displaceable headlamp assembly is partially by the dead weigh that utilizes gravitational force acting thereon for the tilting of the mechanically angularly displaceable headlamp assembly. The weight and the position of the dead weight may be manipulated based on the headlamp and the type of bearing used. The frame support structure includes a plurality of brackets and tubular frame elements for supporting the mechanically angularly displaceable headlamp assembly and the cables used for actuating the mechanically angularly displaceable headlamp assembly. The frame support structure for supporting the mechanically angularly displaceable headlamp assembly and the cables used for actuating the mechanically angularly displaceable headlamp assembly is secured to the front frame .portion of the two-wheeler vehicle. The mechanically angularly displaceable headlamp assembly facilitates the rotation of the headlamp along the vertical axis as well as along the longitudinal axis. More specifically, the mechanically angularly displaceable headlamp assembly includes a mechanically angularly displaceable headlamp assembly for facilitating rotation of the headlamp along the vertical axis in response to a change in the direction of travel of the two-wheeler vehicle during steering and a longitudinal mechanically angularly displaceable headlamp

assembly for facilitating rotation of the headlamp along the longitudinal axis in response to a change in the orientation of the two-wheeler vehicle due to tilting of the two-wheeler vehicle during steering thereof. The longitudinal mechanically angularly displaceable headlamp assembly facilitates rotation of the headlamp about the longitudinal axis, thereby maintaining the light pattern projected by the headlamp parallel to the ground, while the two wheeler vehicle is leaning from its vertical plane.
Figure 17 illustrates the front frame portion 1000 with a frame structure/support structure 150for a self-adjusting headlamp system for a two-wheeler vehicle mounted thereon. The front frame portion 1000 includes a handle bar 110, a speedometer console 120, a pair of fork bars 130, a front wheel 140 supported between the pair of fork bars 130. The support structure/ fixed frame/dome 150 provide support to the actuating assembly and is secured to the front frame portion 1000 of the two wheeler vehicle. More specifically, the self-adjusting headlamp system includes the support structure/ fixed frame/dome 150 configured from brackets and tubes that may be adjusted with respect to the front frame portion 1000 of the two wheeler. The actuating assembly includes cable harness supported on the frame structure / support structure 150 of the actuating assembly for supporting a plurality of actuating cables. The plurality of cables facilitates the self-adjustment of the headlamp 162 in response to steering of the handle bar 110 of the two-wheeler vehicle. More specifically, one extreme end of each of the.cables is connected to the headlamp 162 while the'other extreme end of the cable is connected to the steering system, particularly the handle-bar of the two wheeler vehicle and as the handle-bar of the two-wheeler is steered, cables transmit the forces to the headlamp to cause turning of the headlamp by an angle corresponding to the handle-bar steering.
Figure 18a illustrates a mechanically "angularly displaceable headlamp assembly 160 supporting a regular reflector type headlamp 162 and mounted on a frame structure and actuated by the actuation assembly. Figure 18b illustrates a mechanically angularly displaceable headlamp assembly 260 supporting the projector headlamp 262 having a

transparent lens 264 and body 263 and mounted on a frame structure and actuated by the actuation assembly. More specifically, the actuating cables of the actuating assembly actuate the adjusting lever 266, and based on the sensitivity settings, the adjusting lever transmits motion to the auxiliary bracket 280, which in turn causes the turning of the projector headlamp 262. Figure 19a illustrates the headlamp 162 pivotally supported by the mechanically angularly displaceable headlamp assembly 160. Referring to Figure 18 and Figure 19a, the mechanically angularly displaceable headlamp assembly 160 includes a headlamp supporting bracket 164, an adjusting lever 166 and a connecting pin 168 (not shown in Figure). The headlamp supporting bracket 164 includes a pair of spaced apart arms 164a and 164b and a centrally and downwardly extending central plate member 164c. The headlamp 162 is pivotally supported between spaced apart arms 164a and 164b of a headlamp supporting bracket 164 of the mechanically angularly displaceable headlamp assembly 160. The headlamp 162 is adapted to be angularly adjusted by an actuating rod (not shown in figures), particularly, one end of the actuating rod is connected to the headlamp 162 while the free end of the actuating rod includes a pin member "P" (not shown in figures) that is securely locked in a desired position inside a longitudinal extending slot 169 configured on a levelling bracket 170 of the self-adjusting mechanism for the headlamp. The pin member "P" is adapted to rotate about an axis thereof for causing angular movement of the actuating rod, thereby causing angular rotation of the headlamp 162 secured to the other end of the actuating rod along an axis of rotation B-B' depicted in Figure 19a. The headlamp 162 is pivotally supported between the pair of spaced apart arms 164a and 164b of the headlamp supporting bracket 164 of the mechanically angularly displaceable headlamp assembly 160. Figure 19a illustrates a mechanically angularly displaceable headlamp assembly with an auxiliary bracket 180 for holding the longitudinal mechanically angularly displaceable headlamp assembly mounted thereon. Referring to Figure 19a, the headlamp 162 includes a plug element 163 for receiving and securely holding one end of the push rod. The position of the pin member can be varied along the length of the longitudinal extending slot 169 for achieving the headlamp levelling, particularly for adjusting the light beam projected on

the road. Figure 19b illustrates the auxiliary bracket for holding the longitudinal mechanically angularly displaceable headlamp assembly. The auxiliary bracket 180 holds the longitudinal rotation assembly that facilitates the rotation of the headlamp with respect to the longitudinal axis in response to the tilting of the two-wheeler vehicle. The auxiliary bracket 180 typically has a thickness of around 2.5 mm.
Figure 20 illustrates a longitudinal mechanically angularly displaceable headlamp assembly in accordance with another embodiment. Figure 21a illustrates the longitudinal mechanically angularly displaceable headlamp assembly, without the levelling bracket 170 and dead weight 190. Figure 21b illustrates a perspective view of the headlamp supporting bracket 164. The headlamp supporting bracket 164 includes provisions for connecting the levelling bracket 170 thereto. More specifically, the central plate member 164c of. the headlamp supporting bracket 164 includes apertures configured thereon for facilitating securing of the levelling bracket 170 thereto via the pin element 167. Referring to Figure 20, the levelling bracket 170 is secured to the headlamp supporting bracket 164 by means of the pin element 167. Similarly, the headlamp supporting bracket 164 can be connected to the bracket 180 for holding the longitudinal rotation assembly via the pin member 167. Referring to Figure 19a, the auxiliary bracket 180 for holding the longitudinal rotation assembly is secured to the headlamp supporting bracket 164 by means of the pin member 167.
The headlamp supporting bracket also includes provision for mounting of the dead weight 190 thereto. More specifically, the central plate member 164c of the headlamp supporting bracket 164 includes apertures configured thereon for facilitating securing of the dead weight 190 thereto. Further, the dead weight can be mounted at an optimum - position with respect to the central plate member 164c for adjusting in accordance with the type of bearing and requirement. The dead weight 190 facilitates in maintaining the headlight 162 stable and normal to the ground while the head light 162 is adjusted along the longitudinal axis to adjust in response to the tilting of the two-wheeler vehicle.

The mechanically angularly displaceable headlamp assembly 160 also includes an arrangement for selecting and adjusting the sensitivity of the headlamp turning angle to the turning angle of the handlebar i.e. the steering angle. The arrangement for selecting and adjusting the sensitivity of the headlamp turning angle to the turning angle of the handle bar includes the adjusting lever 166 illustrated in Figure 18 and Figure 19a.
Figure 22a illustrates the self-adjusting mechanism for headlamp configured with a levelling bracket 170 for levelling the headlight. Figure 22b illustrates an enlarged perspective view of the bracket 170 for levelling the head light 162. Figure 23a illustrates headlamp self-adjusting mechanism provided with connection between the levelling bracket 170 and the headlamp supporting bracket 164. More specifically, the levelling bracket 170 is connected to the headlamp supporting bracket 164 by means of the connecting pin 167 illustrated in Figure 23b. Figure 24 illustrates the dead weight 190 mounted on the headlamp supporting bracket 164.
The motor vehicles covered in this specification may be working with any type of power train e.g. electric vehicles, hybrid vehicles, vehicles working on gaseous fuels etc..
Figure 25a - Figure 25c illustrates different configurations of the projector headlamp 262, the bezel 252 and the plastic cover 265 during different steering configurations of the handle bar, particularly at different positions of the steering handle. More specifically, Figure 25a illustrates the configuration of the headlamp 262, when the two-wheeler vehicle is moving along a straight path and the handle bar is maintained straight. Figure 25b illustrates the configuration of the headlamp 262, when the two-wheeler vehicle is turning towards the right due to turning of the handle bar and Figure 25c illustrates the configuration of the headlamp 262, when the two-wheeler vehicle is turning towards the left due to turning of the handle bar.

Figure 26a - Figure 26c illustrate a side view, a front view and an enlarged front view of the front portion of the two-wheeler vehicle equipped with the self-adjusting headlamp system for adjusting the projector headlamp 262 during steering of the handle bar, the two-wheeler vehicle is provided with a fairing 268 for concealing the construction elements of the self-adjusting headlamp system. The fairing 268 includes a transparent lens 270 disposed in front on the mechanically angularly displaceable headlamp assembly 260.
Figure 27a - Figure 27c illustrate different configurations of the elements of the mechanically angularly displaceable headlamp assembly 260, particularly, the projector headlamp 262, the bezel 252 and the plastic cover 265 during different steering configurations of the handle bar, particularly at different positions of the steering handle. More specifically, Figure 27a illustrates the configuration of the headlamp 262, when the two-wheeler vehicle is moving along a straight path and the handle bar is maintained straight. Figure 27b illustrates the configuration of the headlamp 262, when the two-wheeler vehicle is turning towards the right due to turning of the handle bar and Figure 27c illustrates the configuration of the headlamp 262, when the two-wheeler vehicle is turning towards the left due to turning of the handle bar.
The self-adjusting headlamp system in accordance with the present invention permits the rider to readily make settings and select the sensitivity of the headlamp turning with respect to the steering angle of the handle-bar, based on the demography of the route to be traversed by the two-wheeler vehicle on which the self-adjusting headlamp system is mounted.
TECHNICAL ADVANCEMENTS
The self-adjusting headlamp system in accordance with the present disclosure has several technical advantages including but not limited to the realization of:

• an arrangement for self-adjusting a headlamp of a two wheeler vehicle with respect to a true vertical axis and a true longitudinal axis in response to a change in the direction of travel and orientation of the two wheeler vehicle respectively during steering of the two wheeler vehicle;
• a self-adjusting headlamp system for a two wheeler vehicle for facilitating effective illumination in front of the two wheeler vehicle, irrespective of the change in direction of travel and orientation of the two wheeler vehicle during steering thereof;
• a self-adjusting headlamp system provided with an adjusting mechanism for adjusting the sensitivity of the headlamp turning angle with respect to the turning angle of the handle bar i.e. the steering angle;
• a self-adjusting headlamp system that is mechanically operated by simple
mechanical linkages, thereby eliminating the need for dedicated
electronic/electrical elements such as motor, switches and a dedicated power source for actuation thereof;
• a self-adjusting headlamp system that is simple in construction;
• a self-adjusting headlamp system for a two wheeler vehicle that is inexpensive and provides a low cost solution without any electronic parts;
• a self-adjusting headlamp system for a headlamp that is reliable.
Throughout this specification the word "comprise", or variations such as "comprises" or "comprising", will be understood to imply the inclusion of a stated element, integer or step, or group of elements, integers or steps, but not the exclusion of any other element, integer or step, or group of elements, integers or steps.
The use of the expression "at least" or "at least one" suggests the use of one or more elements or ingredients or quantities, as the use may be in the embodiment of the disclosure to achieve one or more of the desired objects or results.

Any discussion of documents, acts, materials, devices, articles or the like that has been included in this specification is solely for the purpose of providing a context for the disclosure. It is not to be taken as an admission that any or all of these matters form a part of the prior art base or were common general knowledge in the field relevant to the disclosure as it existed anywhere before the priority date of this application.
The numerical values mentioned for the various physical parameters, dimensions or quantities are only approximations and it is envisaged that the values higher/lower than the numerical values assigned to the parameters, dimensions or quantities fall within the scope of the disclosure, unless there is a statement in the specification specific to the contrary.
While considerable emphasis has been placed herein on the specific features .of the preferred embodiment, it will be appreciated that many additional features can be added and that many changes can be made in the preferred embodiment without departing from the principles of the disclosure. These and other changes in the preferred embodiment of the disclosure will be apparent to those skilled in the art from the disclosure herein, whereby it is to be distinctly understood that the foregoing descriptive matter is to be interpreted merely as illustrative of the disclosure and not as a limitation.

We Claim:
1. A self-adjusting headlamp system for a two-wheeler vehicle steerable by a
handle bar, said self-adjusting headlamp system comprising' a mechanically
angularly displaceable headlamp assembly mounted on an operative front frame
portion of the two-wheeler vehicle, said assembly adapted to be angularly
displaced by mechanical linkages in response to the angular displacement of
said handle-bar.
2. The self-adjusting headlamp system for a two-wheeler vehicle as claimed in claim
1, wherein said mechanically angularly displaceable headlamp assembly
comprises:
o a headlamp support bracket comprising a pair of arms extending opposite to each other from a longitudinal median plane and adapted to define a pivot axis and pivotably support the headlamp therebetween; and
o actuating means functionally coupled to said headlamp and adjustably disposed between said headlamp and said headlamp support bracket to facilitate adjusting of said headlamp with respect to said headlamp support bracket and angular displacement of said headlamp about said pivot axis.
3. The self-adjusting headlamp system for a two-wheeler vehicle as claimed in
claim 2, wherein said actuating means is supported between a plug element
configured on said headlamp and a pin element adjustably received in a slot
configured on a base of said headlamp support bracket such that the position of
said pin element is adapted to be varied along the length of said slot for
achieving headlamp levelling.

4. The self-adjusting headlamp system for a two wheeler vehicle as claimed in claim 1, wherein said mechanical linkages facilitate coupling between said handle-bar and said-headlamp.
5. The self-adjusting headlamp system for a two wheeler vehicle as claimed in claim 1, wherein said mechanically angularly displaceable headlamp assembly further comprises a sensitivity adjustment mechanism adapted to adjust the sensitivity of said headlamp turning with respect to the handle-bar steering angle of said handle-bar, wherein said sensitivity adjustment mechanism comprises:

• an adjusting lever with a plurality of slots configured thereon, wherein each slot is adapted to receive an actuating cable of said actuating assembly, wherein said actuating cable transmits steering motion of said handle-bar to said adjusting lever; and
• a connecting pin functionally coupled to said headlamp support bracket and said adjusting lever for facilitating functional coupling of said adjusting lever with said headlamp supporting bracket, thereby transmitting the steering motion of said handle-bar to said headlamp supporting bracket via said adjusting lever to cause adjustment of said headlamp by a corresponding turning angle.
6. The self-adjusting headlamp system for a two wheeler vehicle as claimed in claim
1, wherein said mechanical linkages comprise:
• a steering lever functionally coupled to said steering handle bar and said headlamp of said two-wheeler vehicle; and
• at least one actuating cable supported on said operative front frame portion and adapted to functionally couple said steering lever to said adjusting lever for facilitating adjustment of said headlamp in response to steering of said handle bar.

7. The self-adjusting headlamp system for a two wheeler vehicle as claimed in
claim 5, wherein said at least one actuating cable is adapted to selectively
engage with a slot of the plurality of slots configured on said adjusting lever to define the ratio of the headlamp turning angle to the steering angle of said handle bar as equal to one.
8. The self-adjusting headlamp system for a two wheeler vehicle as claimed in
claim 5, wherein said at least one actuating cable adapted to selectively engage
with a slot of the plurality of slots configured on said adjusting lever to define
the ratio of the headlamp turning angle to the steering angle of said handle bar
as less than one.
9. The self-adjusting headlamp system for a two wheeler vehicle as claimed, in
. claim 5, wherein said at least one actuating cable adapted to selectively engage
with a slot of the plurality of slots configured on said adjusting lever to define
the ratio of the headlamp turning angle to the steering angle of said handle bar as greater than one.
10. The self-adjusting headlamp system for a two wheeler vehicle as claimed in claim 1 further comprising a cover and a fairing for concealing constructional elements of the self-adjusting headlamp system.
11. The self-adjusting headlamp system for a two wheeler vehicle as claimed in claim 1, wherein said headlamp is a projector type headlamp.
12. The self-adjusting headlamp system for a two wheeler vehicle as claimed in claim 1, wherein said headlamp is a reflector type headlamp.

13. The self-adjusting headlamp system for a two wheeler vehicle as claimed in
claim 1, further comprising a frame structure functionally coupled to said front
frame portion, wherein said frame structure comprises a central plate and a pair
of connecting plates secured thereto, wherein frame structure is adapted to
facilitate adjustable mounting of said mechanically angularly displaceable
headlamp assembly with respect to said front frame portion of the two-wheeler
vehicle.
14. The self-adjusting headlamp system for a two wheeler vehicle as claimed in
claim 2, wherein said headlamp support bracket is adapted to adjustably support
a dead weight for utilizing gravitational force acting on said dead weight for the
tilting of said angularly displaceable headlamp assembly.
15. The self-adjusting headlamp system for a two wheeler vehicle as claimed in
claim 1, wherein said headlamp support bracket is adapted to support an
auxiliary bracket for facilitating functional coupling of said headlamp
supporting bracket with said adjusting lever.
16. The self-adjusting headlamp system for a two wheeler vehicle as claimed in
claim 1, wherein said headlamp support bracket has at least one slot configured
thereon for facilitating connection of a levelling bracket thereto via a pin
element.