Description:FORM 2

THE PATENTS ACT, 1970
(39 of 1970)
&
THE PATENTS RULES, 2003

COMPLETE SPECIFICATION
(See section 10, rule 13)

“SPEEDOMETER OF VEHICLE”

HERO MOTOCORP LIMITED, an Indian company, of The Grand Plaza, Plot No. 2, Nelson Mandela Road, Vasant Kunj- Phase-II, New Delhi – 110070, India,

The following specification particularly describes the invention and the manner in which it is to be performed.

TECHNICAL FIELD
[001] The present disclosure relates to a vehicle. Particularly, the present disclosure relates to a speedometer of the vehicle. More particularly, the present disclosure relates to a self-driven speedometer of the vehicle.

BACKGROUND
[002] The information in this section merely provides background information related to the present disclosure and may not constitute prior art(s) for the present disclosure.
[003] In vehicles, such as automobiles, motorcycles, etc., speedometers are driven mechanically by a cable connected to a vehicle's transmission/ wheel. When the vehicle is in motion, a speedometer gear assembly rotates a speedometer cable, which leads to turning of a pointer of the speedometer.
[004] Additionally, the speedometer comprises display units for indicating the speedometer output readings, for example, speed of the vehicle, revolution per minute of wheel(s), mileage, etc., along with one or more LED lamps for illuminating a housing/ display unit of the speedometer. Said display unit(s) and LED lamps, and an electronic control unit associated with the speedometer typically draw energy from a battery of the vehicle, and thus adds to the energy load on the battery of the vehicle.
[005] Accordingly, there remains a need in the domain for an improved speedometer of a vehicle that can overcome at least the problems identified above and that does not depend on vehicle’s architecture or vehicle’s battery for energy requirements.

SUMMARY
[006] The one or more shortcomings of the prior art are overcome by the system/ assembly as claimed, and additional advantages are provided through the provision of the system/ assembly as claimed in the present disclosure. Additional features and advantages are realized through the techniques of the present disclosure. Other embodiments and aspects of the disclosure are described in detail herein and are considered a part of the claimed disclosure.
[007] Pursuant to an aspect of the present disclosure, a speedometer of a vehicle is disclosed. The speedometer comprises one or more magnets adapted to be rotated within a housing of the speedometer. The one or more magnets is configured to rotate based on a rotation of a wheel of the vehicle. The speedometer further comprises at least one coil arranged adjacent to the one or more magnets. Further, the one or more magnets is configured to rotate with respect to the at least one coil such that an electric current is generated in the at least one coil.
[008] In another non-limiting embodiment of the present disclosure, the speedometer comprises a rectifier and a combination circuit arranged in a downstream direction of the electric current produced in the at least one coil. The rectifier is configured to convert alternating current produced in the at least one coil into direct current. Further, the combination circuit is comprised of a current regulator and a capacitor and configured to convert the direct current into a steady direct current.
[009] In another non-limiting embodiment of the present disclosure, the speedometer comprises a comparator circuit configured to receive the steady direct current from the combination circuit, and determine if the steady direct current exceeds a threshold current value. The speedometer further comprises a processor unit operatively coupled with the comparator circuit and configured to switch energy source for driving the speedometer from a vehicle battery to the electric current produced in the at least one coil, when the steady direct current exceeds the threshold current value.
[010] In another non-limiting embodiment of the present disclosure, the one or more magnets is coupled with the wheel of the vehicle by a flexible shaft cable. The flexible shaft cable is configured to transmit the rotation of the wheel to the one or more magnets.
[011] In another non-limiting embodiment of the present disclosure, the flexible cable comprises an inner wire enclosed within an outer sheath. The inner wire is rotatable within the outer sheath and is configured to transmit the rotation of the wheel to the one or more magnets.
[012] In another non-limiting embodiment of the present disclosure, the electric current generated in the at least one coil is based on a number of coils, a number of turns in the at least one coil, radius of the at least one coil, material of the at least one coil, and/ or position of the at least one coil relative to the one or more magnets.
[013] In another non-limiting embodiment of the present disclosure, the at least one coil comprises a first coil and a second coil arranged adjacent to the one or more magnets and at two diametrically opposite ends of the one or more magnets.
[014] In another non-limiting embodiment of the present disclosure, the first coil and the second coil are connected in parallel with each other.
[015] In another non-limiting embodiment of the present disclosure, the at least one coil comprises a plurality of coils arranged with each other in either a parallel combination, or a series combination, or a parallel-series combination.
[016] In another non-limiting embodiment of the present disclosure, the one or more magnets is a 16-pole magnet.
[017] In another non-limiting embodiment of the present disclosure, the at least one coil is arranged circumferentially around the one or more magnets.
[018] In another non-limiting embodiment of the present disclosure, the electric current generated in the at least one coil is configured to drive the speedometer and an electronic control unit associated with the speedometer.
[019] Within the scope of the present disclosure, when the vehicle is in motion, the speedometer self generates or harnesses power or energy to run the display unit and/ or LED lamps of the speedometer, and the electronic control unit associated with the speedometer, and thus does not depend on vehicle’s battery for its operation. Further, the comparator circuit of the speedometer aids in disconnecting the vehicle’s battery from the speedometer, when the vehicle is in motion, so that the speedometer operates on the self-generated power or energy. Moreover, the first coil and the second coil, and other plurality of coils, arranged in either a parallel combination, or a series combination, or a parallel-series combination, along with 16-pole magnet adds up to the total power or energy generated in the speedometer.
[020] Pursuant to another aspect of the present disclosure, a speedometer of a vehicle is disclosed. The speedometer comprises one or more magnets coupled with a wheel of the vehicle by a flexible shaft cable, and the flexible shaft cable is configured to transmit a rotation of the wheel to the one or more magnets. The speedometer further comprises a first coil and a second coil arranged circumferentially around the one or more magnets and at two diametrically opposite ends of the one or more magnets, and the first coil and the second coil are connected in parallel with each other. The one or more magnets is configured to rotate with respect to the first coil and the second coil such that an electric current is generated in the first coil and the second coil for driving the speedometer and an electronic control unit associated with the speedometer. The speedometer further comprises a rectifier arranged in a downstream direction of the electric current produced in the first coil and the second coil. The rectifier is configured to convert alternating current produced in the first coil and the second coil into direct current. The speedometer further comprises a combination circuit arranged downstream of the rectifier. The combination circuit is comprised of a current regulator and a capacitor, and the combination circuit is configured to convert the direct current into a steady direct current. Further, the speedometer comprises a comparator circuit that is configured to receive the steady direct current from the combination circuit, and determine if the steady direct current exceeds a threshold current value. Furthermore, the speedometer comprises a processor unit operatively coupled with the comparator circuit and configured to switch energy source for driving the speedometer from a vehicle battery to the electric current produced in the first coil and the second coil, when the steady direct current exceeds the threshold current value.
[021] In another non-limiting embodiment of the present disclosure, the electric current generated in the first coil and the second coil is based on a number of turns in the first coil and the second coil, radius of the first coil and the second coil, material of the first coil and the second coil, and/ or position of the first coil and the second coil relative to the one or more magnets.
[022] Within the scope of the present disclosure, when the vehicle is in motion, the speedometer self generates or harnesses power or energy to run the display unit and/ or LED lamps of the speedometer and the electronic control unit associated with the speedometer, and thus does not depend on vehicle’s battery for its operation. Further, the comparator circuit of the speedometer aids in disconnecting the vehicle’s battery from the speedometer, when the vehicle is in motion, so that the speedometer operates on the self-generated power or energy.
[023] Pursuant to yet another aspect of the present disclosure, a vehicle is disclosed. The vehicle comprises a vehicle frame, a front wheel and a rear wheel, a drive unit and a transmission unit for driving the vehicle, and a speedometer coupled with one of the front wheel and the rear wheel by a flexible shaft cable. The speedometer comprises one or more magnets adapted to be rotated within a housing of the speedometer. The one or more magnets is configured to rotate based on a rotation of the front wheel or the rear wheel transmitted by the flexible shaft cable. The speedometer further comprises at least one coil arranged adjacent to the one or more magnets. Further, the one or more magnets is configured to rotate with respect to the at least one coil such that an electric current is generated in the at least one coil for driving the speedometer and an electronic control unit associated with the speedometer.
[024] In another non-limiting embodiment of the present disclosure, the speedometer comprises a rectifier arranged in a downstream direction of the electric current produced in the at least one coil, and the rectifier is configured to convert alternating current produced in the at least one coil into direct current. The speedometer further comprises a combination circuit arranged downstream of the rectifier and comprised of a current regulator and a capacitor, and the combination circuit is configured to convert the direct current into a steady direct current. The speedometer furthermore comprises a comparator circuit configured to receive the steady direct current from the combination circuit, and determine if the steady direct current exceeds a threshold current value. Further, the speedometer comprises a processor unit operatively coupled with the comparator circuit and configured to switch energy source for driving the speedometer from a vehicle battery to the electric current produced in the at least one coil, when the steady direct current exceeds the threshold current value.
[025] In another non-limiting embodiment of the present disclosure, the electric current generated in the at least one coil is based on a number of coils, a number of turns in the at least one coil, radius of the at least one coil, material of the at least one coil, and/ or position of the at least one coil relative to the one or more magnets.
[026] In another non-limiting embodiment of the present disclosure, the at least one coil comprises a plurality of coils arranged with each other in either a parallel combination, or a series combination, or a parallel-series combination.
[027] In another non-limiting embodiment of the present disclosure, the at least one is arranged circumferentially around the one or more magnets.
[028] In another non-limiting embodiment of the present disclosure, the flexible cable comprises an inner wire enclosed within an outer sheath. The inner wire is rotatable within the outer sheath and is configured to transmit the rotation of the wheel to the one or more magnets.
[029] Within the scope of the present disclosure, when the vehicle is in motion, the speedometer of the vehicle self generates or harnesses power or energy to run the display unit and/ or LED lamps of the speedometer and the electronic control unit associated with the speedometer, and thus does not depend on vehicle’s battery for its operation. Further, the comparator circuit of the speedometer aids in disconnecting the vehicle’s battery from the speedometer, when the vehicle is in motion, so that the speedometer operates on the self-generated power or energy.
[030] It is to be understood that the aspects and embodiments of the disclosure described above may be used in any combination with each other. Several of the aspects and embodiments may be combined together to form a further embodiment of the disclosure.
[031] The foregoing summary is illustrative only and is not intended to be in any way limiting. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features will become apparent by reference to the drawings and the following detailed description.

BRIEF DESCRIPTION OF FIGURES
[032] The novel features and characteristics of the disclosure are set forth in the description. The disclosure itself, however, as well as a preferred mode of use, further objectives, and advantages thereof, will best be understood by reference to the following description of an illustrative embodiment when read in conjunction with the accompanying drawings. One or more embodiments are now described, by way of example only, with reference to the accompanying drawings wherein like reference numerals represent like elements and in which:

[033] FIG. 1 illustrates a perspective view of an exemplary two wheeled vehicle, in accordance with an embodiment of the present disclosure;
[034] FIG. 2 illustrates an exploded side view of a speedometer of the vehicle of FIG. 1, along with a flexible shaft cable adapted to couple the speedometer with a wheel of the vehicle, in accordance with an embodiment of the present disclosure;
[035] FIG. 3 illustrates an exploded perspective view of the speedometer of FIG. 2, in accordance with an embodiment of the present disclosure;
[036] FIG. 4 illustrates another exploded view of the speedometer of FIG. 2, in accordance with an embodiment of the present disclosure;
[037] FIG. 5 illustrates a side cross-sectional view of the speedometer of FIG. 2, in accordance with an embodiment of the present disclosure;
[038] FIG. 6 illustrates an assembled top view of the speedometer of FIG. 2, in accordance with an embodiment of the present disclosure; and
[039] FIG. 7 illustrates a control circuit associated with the speedometer of FIG. 2 and corresponding control unit, in accordance with an embodiment of the present disclosure.

[040] Skilled artisans will appreciate that elements in the drawings are illustrated for simplicity and have not necessarily been drawn to scale. For example, the dimensions of some of the elements in the drawings may be exaggerated relative to other elements to help to improve understanding of embodiments of the present disclosure.

DETAILED DESCRIPTION
[041] While the disclosure is susceptible to various modifications and alternative forms, specific embodiments thereof have been shown by way of example in the FIGS. and will be described in detail below. It should be understood, however that it is not intended to limit the disclosure to the particular forms disclosed, but on the contrary, the disclosure is to cover all modifications, equivalents, and alternatives falling within the scope of the disclosure as defined by the appended claims.
[042] Before describing detailed embodiments, it may be observed that the novelty and inventive step that are in accordance with the present disclosure resides in a speedometer and a vehicle comprising the speedometer. It is to be noted that a person skilled in the art can be motivated from the present disclosure and modify the various constructions of the speedometer and the vehicle. However, such modification should be construed within the scope of the present disclosure. Accordingly, the drawings are showing only those specific details that are pertinent to understanding the embodiments of the present disclosure so as not to obscure the disclosure with details that will be readily apparent to those of ordinary skill in the art having benefit of the description herein.
[043] In the present disclosure, the term “exemplary” is used herein to mean “serving as an example, instance, or illustration.” Any embodiment or implementation of the present subject matter described herein as “exemplary” is not necessarily to be construed as preferred or advantageous over other embodiments.
[044] The terms “comprises”, “comprising”, or any other variations thereof, are intended to cover a non-exclusive inclusions, such that a device that comprises a list of components does not include only those components but may include other components not expressly listed or inherent to such setup or device. In other words, one or more elements in a system or apparatus proceeded by “comprises… a” does not, without more constraints, preclude the existence of other elements or additional elements in the system or apparatus.
[045] The terms like “at least one” and “one or more” may be used interchangeably or in combination throughout the description.
[046] While the present disclosure is illustrated in the context of a vehicle, however, speedometer and aspects and features thereof can be used with other type of vehicles as well. The terms “modular vehicle”, “vehicle”, “two-wheeled vehicle”, “electric vehicle”, “EV” and “motorcycle” have been interchangeably used throughout the description. The term “vehicle” comprises vehicles such as motorcycles, scooters, bicycles, mopeds, scooter type vehicle, and the like.
[047] The terms “front/forward”, “rear/rearward/back/backward”, “up/upper/top”, “down/lower/lower ward/downward, bottom”, “left/leftward”, “right/rightward” used therein represents the directions as seen from a vehicle driver sitting astride.
[048] Pursuant to an aspect of the present disclosure, in an embodiment, a speedometer of a vehicle is disclosed. The speedometer comprises one or more magnets adapted to be rotated within a housing of the speedometer. The one or more magnets is configured to rotate based on a rotation of a wheel of the vehicle. The speedometer further comprises at least one coil arranged adjacent to the one or more magnets. Further, the one or more magnets is configured to rotate with respect to the at least one coil such that an electric current is generated in the at least one coil. Also, the electric current generated in the at least one coil is based on a number of coils, a number of turns in the at least one coil, radius of the at least one coil, material of the at least one coil, and/ or position of the at least one coil relative to the one or more magnets. The electric current generated in the at least one coil is configured to drive the speedometer and an electronic control unit associated with the speedometer.
[049] In an embodiment, the speedometer comprises a rectifier and a combination circuit arranged in a downstream direction of the electric current produced in the at least one coil. The rectifier is configured to convert alternating current produced in the at least one coil into direct current. The combination circuit is comprised of a current regulator and a capacitor and configured to convert the direct current into a steady direct current. Further, the speedometer comprises a comparator circuit configured to receive the steady direct current from the combination circuit, and determine if the steady direct current exceeds a threshold current value. The speedometer further comprises a processor unit operatively coupled with the comparator circuit and configured to switch energy source for driving the speedometer from a vehicle battery to the electric current produced in the at least one coil, when the steady direct current exceeds the threshold current value.
[050] In some embodiments, the one or more magnets is coupled with the wheel of the vehicle by a flexible shaft cable. The flexible shaft cable is configured to transmit the rotation of the wheel to the one or more magnets.
[051] In an embodiment, the at least one coil comprises a first coil and a second coil arranged adjacent to the magnet and at two diametrically opposite ends of the one or more magnets. The first coil and the second coil are connected in parallel with each other. Moreover, the at least one coil comprises a plurality of coils arranged with each other in either a parallel combination, or a series combination, or a parallel-series combination. In some embodiments, the one or more magnets is a 16-pole magnet. Further, the at least one coil is arranged circumferentially around the one or more magnets.
[052] Pursuant to yet another aspect of the present disclosure, in another embodiment, a vehicle is disclosed. The vehicle comprises a vehicle frame, a front wheel and a rear wheel, a drive unit and a transmission unit for driving the vehicle, and a speedometer coupled with one of the front wheel and the rear wheel by a flexible shaft cable. The speedometer comprises one or more magnets adapted to be rotated within a housing of the speedometer. The one or more magnets is configured to rotate based on a rotation of the front wheel or the rear wheel transmitted by the flexible shaft cable. The speedometer further comprises at least one coil arranged adjacent to the one or more magnets. Further, the one or more magnets is configured to rotate with respect to the at least one coil such that an electric current is generated in the at least one coil for driving the speedometer and an electronic control unit associated with the speedometer.
[053] The speedometer comprises a rectifier arranged in a downstream direction of the electric current produced in the at least one coil, and the rectifier is configured to convert alternating current produced in the at least one coil into direct current. The speedometer further comprises a combination circuit arranged downstream of the rectifier and comprised of a current regulator and a capacitor, and the combination circuit is configured to convert the direct current into a steady direct current. The speedometer furthermore comprises a comparator circuit configured to receive the steady direct current from the combination circuit, and determine if the steady direct current exceeds a threshold current value. Further, the speedometer comprises a processor unit operatively coupled with the comparator circuit and configured to switch energy source for driving the speedometer from a vehicle battery to the electric current produced in the at least one coil, when the steady direct current exceeds the threshold current value.
[054] Reference will now be made to the exemplary embodiments of the present disclosure, as illustrated in the accompanying drawings. Wherever possible, same numerals will be used to refer to the same or like parts. Embodiments of the disclosure are described in the following paragraphs with reference to FIGS. 1 to 7. In FIGS. 1 to 7, the same element or elements which have same functions are indicated by the same reference signs.
[055] Referring to FIG. 1, an exemplary vehicle (100) according to an embodiment of the present disclosure is illustrated. The vehicle (100) referred to herein, embodies a two wheeled vehicle, such as a scooter. Alternatively, without deviating from the scope of the present disclosure, the vehicle (100) of the present disclosure may embody any other ridden vehicle, such as a motorcycle, a three-wheeled vehicle, all-terrain vehicle (ATV) etc.
[056] With reference to FIG. 1, the vehicle (100) may comprise a rear end assembly (110), a front end assembly (120), and a vehicle frame (102). The rear end assembly (110) may comprise a seat (130), a storage area (not shown) below the seat (130), a rear wheel (112), and a power unit (not shown). The seat (130) may provide seating for a rider and/ or a passenger of the vehicle (100), and the storage area provided below the seat (130) may be adapted to facilitate storage of articles. As shown in FIG. 1, the rear wheel (112) may underly the seat (130) and may be adapted to be driven by the power unit. The power unit may comprise an internal combustion engine (not shown) and a transmission unit (not shown) configured to drive the vehicle (100). The internal combustion engine may be adapted to generate power required by the vehicle (100), and the transmission unit may be adapted to transfer the power to the rear wheel (112). The vehicle (100) may further comprise a fuel tank (not shown) to store fuel required by the internal combustion engine to power the vehicle (100). In an alternative embodiment, the power unit may comprise an electric motor for driving the vehicle (100). Further, without deviating from the scope of the present disclosure, the rear end assembly (110) may comprise additional components, such as, suspension systems, taillights, rear grips, blinkers, etc., constructional and functional features of which are readily understood to a person skilled in the art.
[057] Referring again to FIG. 1, the front end assembly (120) of the vehicle (100) may comprise a steering mechanism (104) and a front wheel (122). The front wheel (122) is configured to be operatively connected to the steering mechanism (104). The steering mechanism (104) may comprise a handlebar (106) and a steering shaft (not visible). The handlebar (106) may be configured to be held and rotated by the rider/ driver to steer the vehicle (100). The handlebar (106) may be mounted on an upper end portion of the steering shaft. Also, the handlebar (106) may be adapted to be rotatable with the steering shaft in response to a steering manipulation by the rider/ driver. Further, the front end assembly (120) may comprises a leg shield (180) arranged ahead of the seat (130). The leg shield (180) may further be adapted to enclose the steering mechanism (104). The vehicle (100) may further comprise a head lamp unit (108) and a pair of turn signal lamp units. Additionally, the front end assembly (120) of the vehicle (100) may comprise a front fender (124), mirrors, etc., without limiting the scope of the present disclosure.
[058] As shown in FIG. 1, the front end assembly (120) of the vehicle (100) comprises a display unit (140). The display unit (140) may be comprised of one or more dials and/ or visual indicators for providing information related to various functional and/ or operational parameters of the vehicle (100). One such dial comprised in the display unit (140) is a pointer (154) for providing a speed of the vehicle (100). The speed of the vehicle (100) may be measured by a speedometer (142) comprised in the front end assembly (120) of the vehicle (100). The display unit (140) may further comprise additional components such as, LCDs, GPS, Graphical User Interface (GUI) etc., without limiting the scope of the invention. All the components associated with the display unit (140), for example, the speedometer (142), LCDs, etc., may be adapted to be operated on energy/ current provided by a battery (not shown in FIG. 1) of the vehicle (100). Within the scope of the present disclosure, the speedometer (142) of the vehicle (100) may be a mechanical speedometer or a digital speedometer. The speedometer (142) may be adapted to be operated based on a rotational speed of the front wheel (122) of the vehicle (100). The speedometer (142) may be coupled with the front wheel (122) of the vehicle (100) by way of a flexible shaft cable (160). In an alternate embodiment, the speedometer (142) may be coupled with the rear wheel (112) of the vehicle (100) by way of the flexible shaft cable (160).
[059] With reference to FIGS. 2 to 4, the speedometer (142) of the vehicle (100) is illustrated. The speedometer (142) may comprise a housing (144) formed of a first cover (146) and a second cover (148). The first cover (146) and the second cover (148) are coupled to each other to define a space therebetween for housing one or more components of the speedometer (142) of the vehicle (100). In an exemplary embodiment illustrated in FIGS. 2 to 4, the first cover (146) and the second cover (148) are coupled to each other by way of plurality of fasteners (158). Alternatively, any suitable technique, for example, adhesion, press-fitting, etc., may be employed to couple the first cover (146) with the second cover (148) to form the housing (144).
[060] The speedometer (142) may further comprise a speedometer frame (150) adapted to be arranged between the first cover (146) and the second cover (148) of the housing (144). The speedometer frame (150) may be adapted to facilitate positioning of the one or more components of the speedometer (142) within the housing (144). In an embodiment, the speedometer frame (150) may facilitate positioning a speedometer dial (156) having a drive shaft (152) within the housing (144) of the speedometer (142). The speedometer (142) may further comprise one or more hair springs (not shown) and the pointer (154) positioned in the housing (144). The pointer (154) may be adapted to pivot and/ or move over calibrations formed/ designed on the speedometer dial (156) to indicate the speed of the vehicle (100). The pointer (154) may be coupled with the drive shaft (152) and may be adapted to pivot and/ or move over the speedometer dial (156) based on a rotation of the drive shaft (152). In accordance with the present disclosure, the drive shaft (152) may be adapted to rotate by way of the flexible shaft cable (160) driven by the rotation of the front wheel (122) of the vehicle (100). In an embodiment, the flexible cable (160) comprises an inner wire enclosed within an outer sheath. The inner wire is rotatable within the outer sheath and is configured to transmit the rotation of the wheel (122) to the one or more magnets (202). A first end (162) of the flexible shaft cable (160) is adapted to be coupled to the drive shaft (152) of the speedometer (142), through a receiver (166) formed in the second cover (148). Further, a second end (164) of the flexible shaft cable (160) is movably coupled with the front wheel (122) of the vehicle (100) for transmitting the rotation of the front wheel (122) of the vehicle (100) to the drive shaft (152) of the speedometer (142).
[061] In accordance with the present disclosure, the speedometer may comprise one or more light emitting diodes (LED) and/ or visual indicators for display of the speedometer (142) or glowing of the components of the speedometer (142) in the night. Also, in case of digital-display speedometer, the speedometer (142) may be coupled with an electronic control unit for converting the rotation of the drive shaft (152) into a digital display. All the said components draw energy/ current from the battery of the vehicle (100).
[062] With reference to FIGS. 5 to7, the speedometer (142) may comprise one or more magnets (202) adapted to be rotated within the housing (144) of the speedometer (142). In accordance with the present disclosure, the one or more magnets (202) may be coupled with the drive shaft (152) of the speedometer (142), and accordingly, a rotational movement of the drive shaft (152) causes a rotational movement of the one or more magnets (202) within the housing (144) of the speedometer (142). In an embodiment, the one or more magnets (202) is configured to rotate based on the rotation of the front wheel (122) of the vehicle (100). The one or more magnets (202) is coupled with the front wheel (122) of the vehicle (100) by the flexible shaft cable (160). The flexible shaft cable (160) is configured to transmit the rotation of the front wheel (122) to the one or more magnets (202) of the speedometer (142). It can be contemplated that the rotation of the front wheel (122) of the vehicle (100) is transmitted to the one or more magnets (202) of the speedometer (142), through the flexible shaft cable (160) and the drive shaft (152) of the speedometer (142). For instance, when the front wheel (122) rotates, the flexible shaft cable (160) is subjected to rotation, leading to the rotational movement of the drive shaft (152) of the speedometer (142). Subsequently, the rotational movement of the drive shaft (152) causes the rotational movement of the one or more magnets (202) within the housing (144) of the speedometer (142), at substantially the same speed as that of the rotation of the front wheel (122) of the vehicle (100).
[063] In an embodiment of the present disclosure, the one or more magnets (202) of the speedometer (142) is a 16-pole magnet. Within the scope of the present disclosure, the one or more magnets (202) is adapted to be rotated inside a hollow metal cup, known as a speed cup (200). Although, the speed cup (200) is free to rotate within the housing (144) of the speedometer (142), however, rotation of the speed cup (200) may be restrained by the one or more hairsprings. In an embodiment, the one or more magnets (202) and the speed cup (200) are not connected with each other, rather are separated by air. The speed cup (200) may further be adapted to be coupled with the pointer (154) that moves pr pivots relative to the speedometer dial (156).
[064] Further, as shown in FIGS. 5 to 7, the speedometer (142) may comprise at least one coil (208). The at least one coil (208) is configured to be arranged adjacent to the one or more magnets (202). In an embodiment, the at least one coil (208) is arranged circumferentially around the one or more magnets (202). In accordance with the present disclosure, the one or more magnets (202) is configured to rotate with respect to the at least one coil (208) such that an electric current is generated in the at least one coil (208). It can be contemplated that with the rotation of the one or more magnets (202) relative to the at least one coil (208), the electric current is induced into the at least one coil (208) by the physical movement of the magnetic flux of the one or more magnets (202) cutting through the at least one coil (208), by virtue of electromagnetic induction. In particular, when the one or more magnets (202) rotates relative to the at least one coil (208), turns of the at least one coil (208) cut the constantly changing magnetic field lines of the one or more magnets (202), thereby inducing a voltage, and correspondingly the electric current, in the at least one coil (208). Without deviating from the scope of the present disclosure, the said generated electric current may be utilized to power the one or more components, for example, LEDs, display, etc., of the speedometer (142). For instance, the electric current generated in the at least one coil (208) is configured to drive the speedometer (142) and an electronic control unit associated with the speedometer (142).
[065] In an embodiment of the present disclosure, as shown in FIGS. 5, 6 and 7, the at least one coil (208) comprises a first coil (204) and a second coil (206) that are arranged adjacent to the one or more magnets (202). In the illustrated exemplary embodiment, the first coil (204) and the second coil (206) are arranged at two diametrically opposite ends of the one or more magnets (202). Further, within the scope of the present disclosure, a plurality of coils of the at least one coil (208) may be arranged with each other in either a parallel combination, or a series combination, or a parallel-series combination. For instance, in the illustrated exemplary embodiment shown in FIGS. 5 to 7, the first coil (204) and the second coil (206) are connected with each other in parallel combination.
[066] In an embodiment, the electric current generated in the at least one coil (208) is based on a number of coils, a number of turns in the at least one coil (208), radius of the at least one coil (208), material of the at least one coil (208), and/ or position of the at least one coil (208) relative to the one or more magnets (202). In an embodiment, the number of turns of the at least one coil (208) may vary based on the radius of the at least one coil (208). In an exemplary embodiment, the at least one coil (208) may have around 7000 to 9000 turns and the radius of the at least one coil (208) may be around 0.004 cm. Also, in a further embodiment, the at least one coil (208) may be made of Copper. The electric current generated in the at least one coil (208) is configured to drive the speedometer (142) and the electronic control unit associated with the speedometer (142). Without deviating from the scope of the present disclosure, in a non-limiting embodiment, the electric current generated in the at least one coil (208) is an alternating current.
[067] Further, the speedometer (142) of the present disclosure comprises a control circuit as shown in FIG. 7. The control circuit comprises the one or more magnets (202) and the at least one coil (208). The control circuit is further configured to be controlled by a control unit associated with the control circuit. As shown in FIG. 7, the speedometer (142) comprises a rectifier (300) and a combination circuit (302). The rectifier (300) and the combination circuit (302) are arranged in a downstream direction of the electric current produced in the at least one coil (208). Without deviating from the scope of the present disclosure, the rectifier (300) is configured to convert the alternating current produced in the at least one coil (208) into direct current by using one or more P-N junction diodes (D1, D2, D3, D4). The rectifier (300) is further configured to allow flow of current in a single direction. In an embodiment, the direct current produced by the rectifier (300) may be a non-steady current. As shown in the exemplary embodiment of FIG.7, the rectifier (300) is embodied as a bridge type rectifier circuit, which includes four diodes to change input AC half-cycle to DC output. In the positive half cycle of the bridge rectifier circuit, two diodes, for example, diodes D1 and D4, are forward bias diodes, and two diodes, for example, diodes D2 and D3, are reverse bias diodes. The diodes D1 and D4 are configured to provide a positive output voltage across the load. Further, in the negative half cycle of the bridge rectifier, the diodes D2 and D3 are forward bias diodes, whereas diodes D1 and D4 are reverse bias diodes. However, polarity across the load stays the same and gives a positive output across the load. In alternate embodiment, the rectifier (300) may comprise any suitable rectifier circuit according to the requirement and expected output, without limiting the scope of the present disclosure.
[068] In accordance with the present disclosure, the combination circuit (302) may be configured to convert the direct current produced by the rectifier (300) into a steady direct current. In an embodiment, the combination circuit (302) may be configured to convert the non-steady direct current produced by the rectifier (300) into a steady direct current. The combination circuit (302) may be comprised of a current regulator (304) and a capacitor (306). The current regulator (304) maybe embodied as a step-down transformer that allows only a set amount of current to pass through. The current regulator (304) may include a circuitry for constant current regulation. This circuitry keeps the current going in the control circuit at a constant level to avoid any damage of the component and/ or the control circuit. Also, the capacitor (306) may be used for storing the electrical energy.
[069] The speedometer (142) of the present disclosure further comprises a comparator circuit (308) and a processor unit (310) operatively coupled with the comparator circuit (308). The processor unit (310) may be operatively associated with the control unit of the speedometer (142) and a memory associated with the control unit. The processor unit (310) may be implemented as one or more microprocessors, microcomputers, microcontrollers, digital signal processors, central processing units, state machines, logic circuitries, and/or any devices that manipulate signals based on operational instructions. Among other capabilities, the processor unit (310) may be configured to fetch and execute computer-readable instructions stored in the memory associated with the control unit. The processor unit (310) may be in electronic communication with the comparator circuit (308) to perform the functions described in the paragraphs below.
[070] In accordance with the present disclosure, the comparator circuit (308) may be configured to receive the steady direct current from the combination circuit (302). The comparator circuit (308) may further be configured to determine if the steady direct current exceeds a threshold current value stored in the memory associated with the control unit of the speedometer (142). The comparator circuit (308) in combination with the processor unit (310) may further be configured to compare the input to the comparator circuit (308) and produce an output. Without deviating from the scope of the present disclosure, and as illustrated in FIG. 7, the comparator circuit (308) may be configured to receive the steady direct current from the combination circuit (302) and compare a quantum of the steady direct current with the threshold current value stored in the memory associated with the control unit. In an instance, where the quantum of the steady direct current received from the combination circuit (302) exceeds the threshold current value, the processor unit (310) switches energy source for driving the components of the speedometer (142) from the battery (provided through a battery input(312)) of the vehicle (100) to the electric current produced in the at least one coil (208). In an embodiment of the present disclosure, the threshold current value may lie within a range of 0.28 to 0.30 Ampere.
[071] In instances where the quantum of the electric current generated in the at least one coil (208) falls below the threshold current value, the processor unit (310) switches energy source for driving the components of the speedometer (142) to the battery of the vehicle. The energy is then supplied to the speedometer (142) through the battery input (312).
[072] Within the scope of the present disclosure, when the vehicle (100) is in motion, the speedometer (142) self generates or harnesses power or energy to run the display unit and/ or LED lamps of the speedometer (142) and the electronic control unit associated with the speedometer (142), and thus does not depend on vehicle’s battery for its operation. Further, the comparator circuit (308) of the speedometer (142) aids in disconnecting the vehicle’s battery from the speedometer (142), when the vehicle (100) is in motion, so that the speedometer (142) operates on the self-generated power or energy.
[073] The various embodiments of the present disclosure have been described above with reference to the accompanying drawings. The present disclosure is not limited to the illustrated embodiments; rather, these embodiments are intended to fully and completely disclose the subject matter of the disclosure to those skilled in this art. In the drawings, like numbers refer to like elements throughout. Thicknesses and dimensions of some components may be exaggerated for clarity.
[074] Herein, the terms “attached”, “connected”, “interconnected”, “contacting”, “mounted”, “coupled” and the like can mean either direct or indirect attachment or contact between elements, unless stated otherwise.
[075] Well-known functions or constructions may not be described in detail for brevity and/or clarity. As used herein the expression “and/or” includes any and all combinations of one or more of the associated listed items.
[076] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. As used herein, the singular forms “a”, “an” and “the” are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms “comprises”, “comprising”, “includes” and/or “including” when used in this specification, specify the presence of stated features, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, operations, elements, components, and/or groups thereof.
[077] While considerable emphasis has been placed herein on the particular features of this disclosure, it will be appreciated that various modifications can be made, and that many changes can be made in the preferred embodiments without departing from the principles of the disclosure. These and other modifications in the nature of the disclosure or the preferred embodiments 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.

EQUIVALENTS:
[078] The embodiments herein and the various features and advantageous details thereof are explained with reference to the non-limiting embodiments in the 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.
[079] 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.
[080] Any discussion of documents, acts, materials, devices, articles and 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.
[081] 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.
, Claims:CLAIMS

We Claim:

1. A speedometer (142) of a vehicle (100), the speedometer comprising:
one or more magnets (202) adapted to be rotated within a housing (144) of the speedometer (142), the one or more magnets (202) configured to rotate based on a rotation of a wheel (122) of the vehicle (100); and
at least one coil (208) arranged adjacent to the one or more magnets (202);
wherein the one or more magnets (202) is configured to rotate with respect to the at least one coil (208) such that an electric current is generated in the at least one coil (208).

2. The speedometer (142) as claimed in claim 1, comprising a rectifier (300) and a combination circuit (302) arranged in a downstream direction of the electric current produced in the at least one coil (208), wherein
the rectifier (300) is configured to convert alternating current produced in the at least one coil (208) into direct current; and
the combination circuit (302) is comprised of a current regulator (304) and a capacitor (306) and configured to convert the direct current into a steady direct current.

3. The speedometer (142) as claimed in claim 2, comprising
a comparator circuit (308) configured to receive the steady direct current from the combination circuit (302), and determine if the steady direct current exceeds a threshold current value; and
a processor unit (310) operatively coupled with the comparator circuit (308) and configured to switch energy source for driving the speedometer (142) from a vehicle battery to the electric current produced in the at least one coil (208), when the steady direct current exceeds the threshold current value.

4. The speedometer (142) as claimed in claim 1, wherein the one or more magnets (202) is coupled with the wheel (122) of the vehicle (100) by a flexible shaft cable (160), and
the flexible shaft cable (160) is configured to transmit the rotation of the wheel (122) to the one or more magnets (202).

5. The speedometer (142) as claimed in claim 4, wherein the flexible cable (160) comprises an inner wire enclosed within an outer sheath, wherein
the inner wire is rotatable within the outer sheath and is configured to transmit the rotation of the wheel (122) to the one or more magnets (202).

6. The speedometer (142) as claimed in claim 1, wherein the electric current generated in the at least one coil (208) is based on a number of coils, a number of turns in the at least one coil (208), radius of the at least one coil (208), material of the at least one coil (208), and/ or position of the at least one coil (208) relative to the one or more magnets (202).

7. The speedometer (142) as claimed in claim 1, wherein the at least one coil (208) comprises a first coil (204) and a second coil (206) arranged adjacent to the one or more magnets (202) and at two diametrically opposite ends of the one or more magnets (202).

8. The speedometer (142) as claimed in claim 7, wherein the first coil (204) and the second coil (206) are connected in parallel with each other.

9. The speedometer (142) as claimed in claim 1, wherein the at least one coil (208) comprises a plurality of coils arranged with each other in either a parallel combination, or a series combination, or a parallel-series combination.

10. The speedometer (142) as claimed in claim 1, wherein the one or more magnets (202) is a 16-pole magnet.

11. The speedometer (142) as claimed in claim 1, wherein the at least one coil (208) is arranged circumferentially around the one or more magnets (202).

12. The speedometer (142) as claimed in claim 1, wherein the electric current generated in the at least one coil (208) is configured to drive the speedometer (142) and an electronic control unit associated with the speedometer (142).

13. A speedometer (142) of a vehicle (100), the speedometer comprising:
one or more magnets (202) coupled with a wheel (122) of the vehicle (100) by a flexible shaft cable (160), the flexible shaft cable (160) configured to transmit a rotation of the wheel (122) to the one or more magnets (202);
a first coil (204) and a second coil (206) arranged circumferentially around the one or more magnets (202) and at two diametrically opposite ends of the one or more magnets (202), the first coil (204) and the second coil (206) connected in parallel with each other,
wherein the one or more magnets (202) is configured to rotate with respect to the first coil (204) and the second coil (206) such that an electric current is generated in the first coil (204) and the second coil (206) for driving the speedometer (142) and an electronic control unit associated with the speedometer (142);
a rectifier (300) arranged in a downstream direction of the electric current produced in the first coil (204) and the second coil (206), wherein the rectifier (300) is configured to convert alternating current produced in the first coil (204) and the second coil (206) into direct current;
a combination circuit (302) arranged downstream of the rectifier (300) and comprised of a current regulator (304) and a capacitor (306), wherein the combination circuit (302) is configured to convert the direct current into a steady direct current;
a comparator circuit (308) configured to receive the steady direct current from the combination circuit (302), and determine if the steady direct current exceeds a threshold current value; and
a processor unit (310) operatively coupled with the comparator circuit (308) and configured to switch energy source for driving the speedometer (142) from a vehicle battery to the electric current produced in the first coil (204) and the second coil (206), when the steady direct current exceeds the threshold current value.

14. The speedometer (142) as claimed in claim 13, wherein the electric current generated in the first coil (204) and the second coil (206) is based on a number of turns in the first coil (204) and the second coil (206), radius of the first coil (204) and the second coil (206), material of the first coil (204) and the second coil (206), and/ or position of the first coil (204) and the second coil (206) relative to the one or more magnets (202).

15. A vehicle (100), comprising:
a vehicle frame (102);
a front wheel (122) and a rear wheel (112);
a drive unit and a transmission unit for driving the vehicle (100); and
a speedometer (142) coupled with one of the front wheel (122) and the rear wheel (112) by a flexible shaft cable (160), the speedometer (142) comprising:
one or more magnets (202) adapted to be rotated within a housing (144) of the speedometer (142), the one or more magnets (202) configured to rotate based on a rotation of the front wheel (122) or the rear wheel (112) transmitted by the flexible shaft cable (160); and
at least one coil (208) arranged adjacent to the one or more magnets (202);
wherein the one or more magnets (202) is configured to rotate with respect to the at least one coil (208) such that an electric current is generated in the at least one coil (208) for driving the speedometer (142) and an electronic control unit associated with the speedometer (142).

16. The vehicle (100) as claimed in claim 16, comprising
a rectifier (300) arranged in a downstream direction of the electric current produced in the at least one coil (208), wherein the rectifier (300) is configured to convert alternating current produced in the at least one coil (208) into direct current;
a combination circuit (302) arranged downstream of the rectifier (300) and comprised of a current regulator (304) and a capacitor (306), wherein the combination circuit (302) is configured to convert the direct current into a steady direct current;
a comparator circuit (308) configured to receive the steady direct current from the combination circuit (302), and determine if the steady direct current exceeds a threshold current value; and
a processor unit operatively coupled with the comparator circuit (308) and configured to switch energy source for driving the speedometer (142) from a vehicle battery to the electric current produced in the at least one coil (208), when the steady direct current exceeds the threshold current value.

17. The vehicle (100) as claimed in claim 15, wherein the electric current generated in the at least one coil (208) is based on a number of coils, a number of turns in the at least one coil (208), radius of the at least one coil (208), material of the at least one coil (208), and/ or position of the at least one coil (208) relative to the one or more magnets (202).

18. The vehicle (100) as claimed in claim 15, wherein the at least one coil (208) comprises a plurality of coils arranged with each other in either a parallel combination, or a series combination, or a parallel-series combination.

19. The vehicle (100) as claimed in claim 15, wherein the at least one coil (208) is arranged circumferentially around the one or more magnets (202).

20. The vehicle (100) as claimed in claim 15, wherein the flexible cable (160) comprises an inner wire enclosed within an outer sheath, wherein
the inner wire is rotatable within the outer sheath and is configured to transmit the rotation of the wheel (122) to the one or more magnets (202).