Specification
TECHNICAL FIELD
[0001] The present subject matter, in general, relates to a braking System for motor vehicle, and in particular relates' the braking system capable of actuating at least two wheel brakes upon actuation of a single brake.
5 BACKGROUND
[0002] Motor vehicles are one of the important modes of transportation. In the last few decades, two-wheeler automobile industry has shown a remarkable growth and development, gaining popularity as personal transport, in terms of technology as well as sales. Due to consistent advancement in technology, motor
10 vehicles, such as motorcycles, scooters, light-weight scooters, trikes etc. that have a saddle-ride type profile, have succeeded in maintaining their popularity among different sections of society. Different sections of society, based on their requirement, utilize the aforementioned motor vehicles for various purposes, such as a recreational activity, a means of transportation, and for sports activities. As a
15 result, it becomes pertinent for the two-wheeler automobile industry to constantly
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develop and improve the design of components of the two-wheeled vehicles to
suit require'ments of different riders.
[0003] Generally, considering two-wheeled vehicles, they are provided with a
pair of brakes disposed on the wheels. Typically, mechanically operated drum
>—<■ 20 brakes are used in the vehicle. With the advent of braking technology,
CNC hydraulically or mechanically operated drum brakes and disc brakes have gained
O popularity. In some appücations disc brake is installed on front wheel(s) and in
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some other application, the disc brake is installed on both front and rear wheels.
Typically, determination of whether to use two disc brakes or one disc brake is 25 primarily based on the capacity of the vehicle and the maximum load vehicle.
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Generally, for lesser capacity vehicles that are not expected to reach very high
speed levels, a Single disc brake is provided, preferably, on to the front wheel of
f\l the vehicle. Additional consideration of providing one disc brake on the front side
jr is to maximise the braking effect by taking the advantage of the dynamic load
CO 30 transfer effect of a vehicle during braking condition.
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[0004] In accordance with the aforementioned ideology, various types of braking Systems have been developed for facilitating braking functionalities in the saddle type vehicle e.g. two-wheelers. Conventionally, braking Systems that allow simultaneous actuation of a front brake and a rear brake upon application of a 5 Single brake lever have gained widespread popularity across the globe. Such, simultaneous actuation of the front wheel brake and the rear wheel brake is performed by a braking System.
BRIEF DESCRIPTION OF THE DRAWINGS [0005] The detailed description is described with reference to the 10 accompanying figures. The same numbers are used throughout the drawings to reference like features and components.
[0006] Fig. 1 (a) depicts an exemplary two-wheeled vehicle with selective parts,
in accordance with an embodiment of the present subject matter.
[0007] Fig. 1 (b) illustrates a schematic layout of the braking system of the two-
15 wheeied motor vehicle 100, in accordance with the embodiment as depicted in
Fig. 1 (a).
fl) [0008] Fig. 2 (a) illustrates a top view of the braking System, in accordance with
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ro the embodiment of Fig. 1 (b).
0) [0009] Fig. 2 (b) depicts an exploded view of the braking System depicted in
j~ 20 Fig. 2 (a), in accordance with the embodiment of Fig. 2 (a).
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CN [00010] Fig. 3 (a) depicts a rear perspective view of the independent brake
lever, in accordance with the embodiment of Fig. 2 (a).
[00011] Fig. 3 (b) depicts a front perspective view of the independent brake
lever, in accordance with the embodiment of Fig. 2 (a).
T_ 25 [00012] Fig. 4 (a) depicts an isometnc view of the secondary lever, in
O accordance with the embodiment öf Fig. 2 (a).
^f [00013] Fig. 4 (b) depicts another isometric view of the secondary lever, in
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accordance with the embodiment as depicted in Fig. 4 (a).
[00014] Fig. 5 (a) depicts a bottom perspective view of the braking System, in
£2 30 accordance'with the embodiment as depicted in Fig. 2 (a).
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C\| [00015] Fig. 5 (b) depicts a cross-sectional top view of the braking system, in
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accordance with the embodiment of Fig. 2,(a).
[00016] Fig. 5 (c) depicts the cross-sectional top view of the braking System in a brake actuated condition, in accordance with the embodiraent of Fig. 5 (b).
DETAILED DESCRDTION
[00017] Conventionally, motor vehicles are provided with a braking System for 5 mainly slowing down or stopping the motion of the vehicle. The braking System, usually, includes at least one brake assembly, such as a front wheel brake assembly and a rear wheel brake assembly for a front wheel and a rear wheel, respectively. Further, each of the front wheel brake assembly and the rear wheel brake assembly is connected to a brake lever for actuation. The brake lever can be
10 connected to the brake assembly in a variety of ways. For example, the brake lever can be connected to the brake assembly by means of a control cable. In such a case, one end of the control cable may be secured to the brake assembly, and the othe'r end of the cable may be secured to the brake lever. This is typically used in drum brake Systems. In another case, the brake lever can be connected to the
15 brake assembly through a hydraulic means. This is generally applicable för disc brake Systems. However, a combination of the cable and hose can also be used.
Q) Further, link or rod can be used for connecting brake lever or to the brake
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n assembly. Consequently, actuation of the brake lever may result in actuation of
_ the brake assembly and subsequently, the brake may be applied.
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H 20 [00018] Generally, the front wheel and the rear wheel are provided with
separate braking Systems. Conventional two-wheeler and three wheeler braking
Systems usually include either completely hand-operated brakes for both the
\^ wheels or include a combination of hand-operated and foot-operated brakes. In the
C\| latter case, generally, the front wheel brakes are hand-operated, and include a
T~ 25 front brake lever mounted on a handle of the two-wheeled vehicle for actuation,
^ whereas the rear wheel brakes can be foot-operated, or sometimes hand operated
CO according to the type of the vehicle.
O [00019] Usually, during Operation of the brakes, riders apply the rear wheel
brake alone. Such a practice stems from the fact that actuating both the brake
30 levers at the same time may be inconvenient for the rider or arising out of a
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d sudden involuntary reaction in case of need of emergency stop for safety. In
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*~ . addition, when the front wheel brake is applied, sudden weight transfer towards
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the front wheel causes the front wheel to brake rapidly, and may result in a sudden
jerk to the vehicle. The sudden jerk may affect the ride quality and may disturb
( the balance and stability of the vehicle leading to an accident. However, on'the
other hand, the braking force applied to rear wheel brake has to be limited to 5 prevent skidding of the vehicle. As a result, the deceleration experienced by the vehicle may also be limited and subsequently, the stopping distance of the vehicle may be significantly long.
[00020] Conventionally, in order to address the above-mentioned concerns,
braking Systems that allow simultaneous actuation of a front wheel brake and a
10 rear wheel brake by application of a Single brake lever have been developed.
Accordingly, upon actuation of the Single brake lever, such a braking System may
allow distribution of braking force to the front wheel as well as the rear wheel of
the vehicle. In addition to being convenient for the rider, such braking Systems
may ensure that the deceleration of the/Vehicle can be increased and subsequently,
15 the stopping distance may be reduced. Further, as would be understood, in two-
wheeled vehicles with such braking Systems, a front brake lever may also be
"JT* provided to independently operate the front wheel brake.
|Q [00021] Further, in such braking Systems with front wheel brake assembly being
a disc brake type, a hydraulic fluid dispensing member is mounted in the vicinity
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*£ 20 of the front brake lever for actuating a hydraulically operated disc brake by the
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front brake lever. This enables the front brake lever to actuate the hydraulic fluid
£ dispensing member for dispensing requisite amount of hydraulic fluid whenever
O front wheel brake is applied. Also, another fluid dispensing member is mounted in
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1^ the vicinity of the rear brake lever to actuate the front wheel brake when the rear
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O 25 wheel brake is actuated. Accommodation of two fluid dispensing members
"*~ populates the handlebar assembly, particularly in two-wheeled vehicle, which is
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typically having multiple System like the head lamp assembly, switch assembly, brake and electrical cable etc. that are mounted or routed thereof. Such a braking
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pr> 30 [00022] Moreover, there exists another type of brake assembly, in which a
CO Single fluid dispensing member is used with either multiple pistons or with a
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CO Single piston actuated for actuation by different levers. This Single fluid
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dispensing member is disposed on one side of the handlebar assembly. The fluid dispending member may include an assembly for mounting to the handlebar and the assembly also supports levers that actuate the fluid dispensing member. Such type of brake assembly includes a lever, similar to a third order lever, with the 5 effort appücation point being in the middle of the lever. Generally, there is a need for providing higher braking force through the lever that could provide a lever ratio close to 1 to overcome poor braking Performance, inadequate braking response, and hard-lever feel. [00023] Thus, in case of certain braking Systems, more than one brake lever is
10 used in the braking System. For example, some braking Systems include an intermediate lever, which helps in transfer of braking forces from a lever that is directly actuated by the user. In such circumstances, brake lever and/or the intermediate lever should return to their initial condition once the brake is released. This is essential safety and comfort requirement as the lever when not
15 retumed to release condition or State would make the user uncomfortable because
of the inconsistent action. Further, the lever action may feel inconsistent due to
"jr* change in travel, in some cases the little travel, causing the user to apply the brake
jg without a predetermined estimation. Moreover, the user has to push the brake to
their rest position, which is hectic process. Generally presence of multiple levers
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*£ 20 requires" usage of multiple Springs that help in retuming of brake lever to the
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resting position. Also, the multiple levers may include two or more levers that
£ interact and function in conjunction with each other, which requires larger spring.
O Presence of multiple Springs aggravates the aforementioned scenario due to
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j^ movement of multiple levers. Moreover, assembly of multiple Springs is time
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O 25 taking and each spring is to be provided with a specific preload. Also, provision of
"<~ multiple Springs on the handlebar of the vehicle that is already tightly packed area
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further eats away Space as the conventional Springs either require substantial axial
length or occupy certain space in case of torsional Springs. This is undesired
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CS especially in cases of vehicles that have a compact handlebar and headlamp
pr> 30 assembly and other parts mounted to the handlebar.
CO [00024] Moreover, using such multiple levers that can operate independently
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CO provide the Option of simultaneous actuation of brake levers exerting excessive
braking force on a single wheel brake. This would result in premature skidding of that particiliar wheel because of the unpredictable road condition like slippery or wet roads that off er low friction and preloaded wheel by braking. Moreover, the. user is prone to apply both the brakes during panic conditions which eventually 5 would result in application of excessive braking forces as in conventional vehicles. Conventionally, a delay mechanism is used in some braking System to address the aforementioned shortcomings. However, the conventional delay mechanism requires use of additional parts that further occupies Space on the handlebar or in the vicinity of the handlebar of the vehicle. These additional parts
10 require additional cpst, assembly time, and extra care for maintenance.
[00025] Thus, there is a need for braking System that addresses the aforementioned and other short Comings in the prior art. The braking System as explained will provide a compact brake assembly with reduced number of parts Also, the present subject matter will be capable of providing improved braking
15 Performance and braking feel with enhanced safety.
[00026] The present subject matter provides a braking system for a motor vehicle. The braking system includes at least one front wheel brake capable of applying braking forces to at least one front wheel and at least one rear wheel brake capable of applying braking forces to at least one rear wheel of the motor
20 vehicle. The motor vehicle includes a two brake levers disposed in proximity to each other. A first brake lever of the two brake levers is rotatable about a first pivot point and a second brake lever of the two brake levers is rotatable about a second pivot point in a second direction of rotation. In one embodiment, the second direction of rotation is substantially opposite to a direction of rotation of
25 the independent brake lever. The levers can be a lever directly actuated by the user or an intermediate lever that is not actuated upon actuation of a lever directly actuated by the user.
[00027] A single elastic member is operably coupled to the first brake lever and to said second brake lever. The single elastic member is capable of providing a
30 retum force upon actuation of the first brake lever and the second brake lever. It is an advantage that the Single elastic member provides the desired return force to both the levers.
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[00028] In one embodiment, the first brake leyer is an independent brake lever , and the second brake lever is a secondary lever that are capable of actuating a fluid dispensing member for application of at least one wheel brake therethrough. The term 'secondary lever' and 'second brake lever' are interchangeably used. 5 The secondary lever is connected to a synchronous brake lever or synchronous brake pedal that is connected to the secondary lever whereby actuation of the synchronous brake lever actuates more than one wheel brake. [00029] It is a feature that in one embodiment, the independent brake lever and the secondary lever are capable of actuating an actuation member, of the fluid 10 dispensing member, independent of each other. Thus, it is an advantage that interdependency of levers for actuation by abutment is avoided. However, the present subject matter is applicable to braking System having actuation of one brake lever through another brake lever through abutment, reaction force, or force distribution.
15 [00030] It is another feature that the Single elastic member is operably coupied and is securely connected to or supported by the independent brake lever and the secondary lever through a first dynamic abutment point and a second dynamjc abutment point, respectively. It is a feature that the dynamic abutment points are movable varying the force exerted by the elastic member beyond a static pre-load.
20 [00031] It is a feature that the dynamic abutment points are made of rigid material and are • preferably integrally formed with the levers. It provides the advantage of ease of assembly and material handling as the number of parts is reduced. [00032] In one embodiment, the first dynamic abutment point is disposed in
25 proximity to a fürst pivot point, a point of rotation, of the independent brake lever. Thus, the first dynamic abutment point is disposed away from an extended portion of the independent brake lever at which the user holds thereby not interfering with aesthetics and user of the independent brake lever. [00033] In one embodiment, the secondary lever includes the second dynamic
30 abutment point that is a cylindrical pin provided at a substantial mid-portion (along vertical length/height) of the secondary lever, which enables uniform application of retum force especially in case of longer secondary levers. A Support -
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wall is provided orthogonal to the second dynamk abutment point supporting the second dynamic abutment point thereby providing structural rigidity to withstand force from the elastic member.
[00034] It is a feature that the elastic member acting as an integrated elastic
5 member offers pre-load to both the brake levers. During actuation of any one or
both the brake levers the respective lever is rotated thereby changing the position
of the respective dynamic abutment point. This compresses the elastic member
that Stores the energy in the form of potential energy. Additional force is exerted
by the elastic member due to this attained energy. The additional force is exerted
10 on the other lever and the user has to overcome this additional force/energy that
provides an increase in delay time or resistance against the application of
excessive braking force on the wheel brake. Thus, it is an advantage that the
present subject matter provides delay without the need for any additional delay
mechanism.
15 [00035] Further feature being, the braking system accommodates the elastic
member more compactly. This provides the advantage of more compact
0) packaging without any fouling or interference with neighboring parts/components.
RJ For example, the braking system is compactly mountable on the handlebar
0) without interfering with the head lamp assembly or the head lamp cowling.
:~ 20 Further advantage being, the braking system is adaptable to all modeis
CN irrespective of the layout.
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C [00036] The present subject matter is not limited to two-wheeled vehicle. As the
present subject matter in essence is applicable to a motor vehicle with one or more front wheels and one or more rear wheels. Therefore, the motor vehicles include a 25 scooter type vehicle, a motorcycle type vehicle, a trike, or an auto-rickshaw.
[00037] These and other advantages of the present subject matter would be
^t described in greater detail in conjunction with the figures in the following
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description.
[00038] Fig. 1 (a) depicts an exemplary two-wheeled motor vehicle 100 with
fj2 30 selective parts, in accordance with an embodiment of the present subject matter.
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f\j The motor vehicle 100 includes a frame assembly 105 supporting a front wheel
?2 HO and a rear wheel 115. The front wheel 110 and the rear wheel 115 are
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rotatably supported by front Suspension system 145 and the rear Suspension System (not shown), respectively. In one embodiment, the rear wheel 115 is additionally supported by a swingarm (not shown). The front wheel 110 is provided with a front wheel brake 120 and the rear wheel 115 is provided with a 5 rear wheel brake 125 (shown in Fig. 1 (b)). The terms front wheel and the front wheel brake are not limiting and includes more than one front wheel or rnore than one front wheel brake as and where applicable. Similarly, the terms rear wheel and the rear wheel brake are not limiting and includes more than one rear wheel or more than one rear wheel brake as and where applicable. In the present
10 embodiment, the front wheel brake 120 is a hydraulically operated disc brake 120 that includes a disc that is concentrically connected to the wheel and a caliper assembly that is functionally connected to the disc. The braking system 200 includes a synchronous brake lever 230 of a rear brake assembly 140 for actuating both the front wheel brake 120 and the rear wheel brake 125. An independent
15 brake lever 205 of the braking system 200 is capable of actuating only the front wheel brake 120. In one implementation, the independent brake lever 205 and the synchronous brake lever 230 may be disposed on one end and other end of a handlebar H of the motor vehicle 100. In a preferred implementation, the independent brake lever 205 and the synchronous brake lever 230 are disposed on
20 right-hand side and a left-hand side of the handtebar H, respectively. The handlebar H is considered a structural member of the motor vehicle 100. The handlebar H is functionally connected to the front wheel 110 through the front suspensions 145 and is rotatably supported by the frame assembly 105 for steering the motor vehicle 100. In another implementation (not shown), the independent
25 brake lever 205 may be used for applying the front wheel brake 120 jointly with the rear wheel brake 125, while other brake lever is used to independently apply the rear wheel brake 125.
[00039] The motor vehicle 100 includes a power unit (not shown) that is either an internal combustion engine, traction motor or both that is functionally
30 connected to at least one wheel of the motor vehicle 100.
^[00040] Fig. 1 (b) illustrates a schematic layout of an exemplary braking system for a motor vehicle 100, in accordance with the embodiment as depicted in Fig. 1
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(a). The front wheel brake 120 is a hydraulically operated disc brake. Further, the independent brake lever 205 may be a hand operated lever actuated to apply the front wheel brake 120. In the present implementation, the synchronous brake lever 230 is also a hand operated lever mounted to the handlebar H. In another 5 implementation, instead of providing the synchronous brake lever 230 on the handlebar H, a foot pedal (not shown) pivoted to the frame assembly can serve as the brake lever to jointly apply braking forces on the front wheel brake 120 and the rear wheel brake 125.
[00041] Further, in the present embodiment, the rear brake assembly includes a
10 distributor assembly 140 coupled with the rear brake lever 230. The distributor
assembly 140 is connected to a hydraulic fluid dispensing member 215 of the
braking System 200, disposed in proximity to the independent brake lever 205,
through a secondary cable 225. Further, the brake lever 230 is connected to the
rear wheel brake 125 through a rear brake cable 155. As can be seen in the present
15 embodiment, the braking System 200 includes only a single fluid dispensing
member 215 functionally coupled to one of the brake lever(s). The independent
"JT* brake lever 205 is functionally connected to the front brake 120 through a front
|Q brake cable 150 to independently actuate the front wheel brake 120. The term
'brake cable' used herein includes a brake hose capable of transferring hydraulic
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*£ 20 force, or a cable movable within a sheathed cover for transferring mechanical
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force, as and where applicable.
£ [00042] Further, the secondary cable 225 is functionally coupled to an actuation
O member (shown in Fig. 2 (a)) of the fluid dispensing member 215. For example,
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1^ the fluid dispensing member 215 contains hydraulic brake fluid for actuation of
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O 25 one or more caliper(s) of the front wheel brake 120 and the actuation member is
"*~ piston. In an embodiment, the actuation of the independent brake lever 205 and/or
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the secondary cable 225 causes a corresponding actuation of the hydraulic fluid
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dispensing member 215 that transmits braking forces to the front wheel brake 120
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CN through the front brake cable 150 that is connected to the front wheel brake 120.
C<) 30 A Single brake cable, which is the front brake cable 150, is connected to the front
CO wheel 115 providing a simple and uncluttered routing for the braking system. In
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the depicted implementation, the front brake cable 150 is a hydraulic cable/hose, and the secondary cable 225 and the rear brake cable 155 are mechanical cables. [00043] Fig. 2 (a) illustrates an enlarged top view of a portion the braking System 200, in accordance with the embodiment of Fig. 1 (b). In the present 5 implementation, the braking System 200 is mounted to a handlebar H. The handlebar H includes a tubulär type single member, a split type, or any other known type of handlebar. The hydraulic fluid dispensing member 215, which is a master cylinder 215, includes a reservoir 216 and an actuation member 217. The terms master cylinder and fluid dispensing member are interchangeably used,
10 hereinafter. The master cylinder 215 is configured to Store hydraulic brake fluid and the actuation member 217 is capable of moving along a piston axis P-P* to displace the brake fluid for engaging or disengaging the wheel brake. [00044] The independent brake lever 205 is hinged/ pivoted to the master cylinder 215 at a first pivot point PI and the independent brake lever 205 is
15 capable of actuating the actuation member 217 during application of independent
brake lever 205. Further, the secondary lever 210 is mounted to the master
*7? cylinder 215 at a second pivot point P2. The master cylinder 215 is secured to the
Ig handlebar H through a holder member 220 is fastened to the master cylinder 215
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so as to secure the braking System 200 to the handlebar H. In other words, the
20 holder member 220 securely mounts the master cylinder 215 to the handlebar H
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by fastening. The holder member 220 together with the master cylinder 215
£ forms the master cylinder assembly.
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O [00045] The fluid dispensing member 215 is having a first face Fl towards one
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j^ lateral side RH or LH, The independent brake lever 205 and the secondary lever
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O 25 210 secured to the fluid dispensing member 215 are disposed towards the first
^ face Fl thereof. Further, the independent brake lever 205 and the secondary lever
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210 are disposed on either sides of the piston axis P-P' along which the actuation
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member 217 is movable. In the present embodiment, the first pivot point PI of the
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CN independent brake lever 205 is disposed ahead of the piston axis P-P' and the
& 30 second pivot point P2 of the secondary lever 210 is disposed rearward of the
CO piston axis P-P', when viewed from top.
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[00046] The secondary cable 225 includes an inner cable 226 that is having one
end connected to the secondary lever 210 and other end connected to the
distributipn assembly 140. Further, the secondary cable 225 includes an outer
sheath 227 that supports the inner cable 226 slidably and the outer sheath 227 is
5 secured between the distribution assembly 140 and the master cylinder 215,
Therefore, during actuation of the independent brake lever 205 in a first direction
of rotation Dl towards the handle grip Gl disposed on one end portion in
proximity to the master cylinder 215, it rotates about the pivot point PI in a
clockwise direction when viewed from the top. Similarly, the actuation of the
10 synchronous brake lever 230, the secondary cable 225 gets pulled that results in
rotation of the secondary lever 210 in a second direction of rotation D2 in an anti-
clockwise direction, when viewed from top. The independent brake lever 210
includes a lever arm 206 that is capable of actuating the actuation member 217
during application of the independent brake lever 205. Correspondingly, the
15 secondary lever 210 includes a secondary arm 211 that is capable of actuating the
, actuation member 217 during actuation of the synchronous brake lever 230
"JT* creates pulling of the secondary cable 225 causing pivotal motion of the
|Q secondary lever 210 thereby resulting in actuation of the master cylinder 215. A
Single etastic member 240 is provided linking the independent brake lever 205 and
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*£ 20 the secondary lever 210 to provide a return force on both the levers 205 & 210,
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when any one or both the levers are actuated.
£ [00047] Fig. 2 (b) depicts an exploded view of the braking System, as depicted
O in Fig. 2 (a) in accordance with the embodiment of the present subject matter. The,
1^ master cylinder 215 includes a first lever-support 218 that is capable of pivotally
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O 25 supporting the independent brake lever 205. The first brake levers support 218
"«" includes a first member, and a second member (collectively referred to as 218)
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that are spaced apart to accommodate a pivot portion of the independent brake
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lever 205. The first lever-support 218 includes apertures that define the first pivot
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CN point Pi. In a preferred implementation, the first lever-support 218 is disposed on
CT) 30 a front facing side, ahead of the piston axis P-P', of the master cylinder 215.
CO Further, the master cylinder 215 includes a second pivot support 219 formed by a
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CO third member, and a fourth member (collectively referred to as 219) spaced apart
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to accommodate the secondary lever 210. The second lever-support 219 includes apertures enabüng the secondary lever 210 to pivot about the pivot point P2. A pin 223 rotatably Supports the secondary lever 210 that is either riveted or secured using a circüp. The second lever-support 219 is disposed on other side of the 5 piston axis P-P' extends in a lateral direction RH/LH without interfering with the handlebar H to which the master cylinder 215 is mounted. The gap between the third member 219-1 and the fourth member 219-2 is substantially greater than the gap between the first member 218-1 and the second member 218-2, whereby the second lever-support 219 is capable of supporting a secondary lever 210 whereby 10 the secondary lever 210 that is substantially wider is accommodated thereat.
[00048] In the present embodiment, the actuation member 217 is having an
actuation point disposed towards a first face Fl of the master cylinder 215 that is
facing substantially a lateral side RH/LH. The orientation referred herein is with
respect to the handlebar H in an orientation providing straight line movement of
15 the vehicle. Further, the master cylinder 215 includes an abutment member 221
that Supports the secondary cable 225 extending from the distribution assembly
*7? 140 towards the secondary lever 210. The abutment member 221 is disposed
Ig substantially away from the second lever-support 219 whereby substantial length
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of the inner cable 226 is supported between the abutment member 221 and the 20 connecting portion 212 provided on the secondary lever 210. The inner cable 226
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of the secondary cable 225 includes a cylindrical pin 228 that is functionally
£ connected to the secondary lever 210 and the cylindrical pin 228 accommodates
O change in orientation of the secondary lever 210 during actuation of the
j^ synchronous brake lever 230. Further, the master cylinder 215 is provided with a
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O 25 mounting portion 222 that conforms and complements the handlebar H and
^ enables mounting of the master cylinder 215 to the handlebar H through the
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holder member 220.
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[00049] The independent brake lever 205 and the secondary lever 210 are
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CN capable of actuating the actuation member 217 by means of the lever arm 206 and
CO 30 the secondary arm 211, respectively. The lever arm 206 extends from the
CO independent brake lever 205 towards the actuation member 217. In the present
CO embodiment, the lever arm 206 includes a first sub-arm 207 and a second sub-arm
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208 that are spaced in a direction substantially orthogonal/perpendicular to the planar region along which rotation of the independent brake lever 205 happens. Similarly, the secondary arm 211 of the secondary lever 210 is extending towards the actuation member 217 and the secondary arm 211 is capable of moving at the 5 gap formed between the flrst sub-arm 207 and the second s üb-arm 208 whereby the levers 205 & 210 can move independent of each other without the need for abutting against one another thereby providing smooth Operation of both the braking mechanism. Further, the Single elastic member 240 acting as an integrated elastic member for the levers 205 & 210 is provided that enables retraction of the
10 levers 205 and 210 to an original condition, in the released condition of the brake lever. In the present implementation, the elastic member 240 is a compression type spring and in a preferred implementation the elastic member 240 is a strip type or leaf type or plate type member. The elastic member 240 is compact part that is linked to the levers 205 & 210 by snug-fit at the first dynamic abutment
15 point 209 and at the second dynamic abutment point 213. This provides easy
assembly and ease of dismantling for Service or for replacement.
"jr* . [00050] Fig. 3 (a) depicts a rear perspective view of the independent brake
jg lever, in accordance with the embodiment of Fig. 2 (a). Fig. 3 (b) depicts a front
perspective view of the independent brake lever. The independent brake lever 205
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*S 20 includes an extended portion 251 to enable the user to hold/press and actuate the
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lever 205. Further, the independent brake lever 205 includes a switch actuating
£ portion 250 that actuates a brake switch 255 (shown in Fig. 5 (a)) when the user
O actuates the brake lever 205 so that the brake switch 255 will actuates a brake
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1^ lamp (not shown) of the motor vehicle 100. The independent brake lever 205
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O 25 includes a first dynamic abutment point 209 that is a protruded member affixed to
"<~ the independent brake lever 205. In another embodiment, the first dynamic
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abutment point 209 is either a scooped portion or a protruded that is either
detachably attached or is integrally disposed. The dynamic abutment point 209 is
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CN a-cylindrical portion protruding outward from a surface of the independent brake
pr> 30 lever 205 and at a tip a Stopper is provided having a diameter substantially greater
CO than a diameter of the rest of the dynamic abutment point 209. The dynamic
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Co abutment point 209 is made of a rigid material like metal that is welded, encasted,
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affixed or the like to the independent brake lever 205. The dynamic abutment point 209 is disposed in proximity to the first pivot point PI of the independent brake lever 205 about which it rotates. The independent brake lever 205 actuates the actuation member 217 of the master cylinder 215 through the lever arm 206.
5 [00051] Fig. 4 (a) depicts an isometric view of the secondary lever, in accordance with the embodiment of Fig. 2 (a). Fig. 4 (b) depicts another isometric view of the secondary lever. The secondary lever 210 inciudes a width Wl that is substantially greater than the width of the independent brake lever 205, defined by a body portion B of the secondary lever 210. The body portion B inciudes a metal
10 insert that can be encasted, press-fitted or the like that enables free rotation of the secondary lever 210 about the pin 223. The secondary lever 210 inciudes a secondary arm 211 that enables actuation of the actuation member 217 of the master cylinder 215 during rotation of the secondary lever 210 about the pivot point/axis P2 in a second direction of rotation D2. In the present implementation,
15 the secondary arm 211 is disposed at a top portion thereof and extending curvedly
in a tear drop shape. However, the secondary arm 211 is capable of taking any
Documents
Application Documents
#
Name
Date
1
201841011027-FORM 4 [28-04-2025(online)].pdf
2025-04-28
1
201841011027-IntimationOfGrant16-11-2023.pdf
2023-11-16
1
Form2 Title Page_Complete_26-03-2018.pdf
2018-03-26
2
201841011027-IntimationOfGrant16-11-2023.pdf
2023-11-16
2
201841011027-PatentCertificate16-11-2023.pdf
2023-11-16
2
Form 3_As Filed_26-03-2018.pdf
2018-03-26
3
201841011027-Annexure [09-11-2023(online)].pdf
2023-11-09
3
201841011027-PatentCertificate16-11-2023.pdf
2023-11-16
3
Form 1_As Filed_26-03-2018.pdf
2018-03-26
4
Drawing_As Filed_26-03-2018.pdf
2018-03-26
4
201841011027-FORM 3 [09-11-2023(online)].pdf
2023-11-09
4
201841011027-Annexure [09-11-2023(online)].pdf
2023-11-09
5
Description Complete_As Filed_26-03-2018.pdf
2018-03-26
5
201841011027-PETITION UNDER RULE 137 [09-11-2023(online)].pdf
2023-11-09
5
201841011027-FORM 3 [09-11-2023(online)].pdf
2023-11-09
6
Correspondence by Applicant_As Filed_26-03-2018.pdf
2018-03-26
6
201841011027-RELEVANT DOCUMENTS [09-11-2023(online)].pdf
2023-11-09
6
201841011027-PETITION UNDER RULE 137 [09-11-2023(online)].pdf
2023-11-09
7
Claims_As Filed_26-03-2018.pdf
2018-03-26
7
201841011027-Written submissions and relevant documents [09-11-2023(online)].pdf
2023-11-09
7
201841011027-RELEVANT DOCUMENTS [09-11-2023(online)].pdf
2023-11-09
8
201841011027-Annexure [22-10-2023(online)].pdf
2023-10-22
8
201841011027-Written submissions and relevant documents [09-11-2023(online)].pdf
2023-11-09
8
Abstract_As Filed_26-03-2018.pdf
2018-03-26
9
201841011027-Annexure [22-10-2023(online)].pdf
2023-10-22
9
201841011027-Correspondence to notify the Controller [22-10-2023(online)].pdf
2023-10-22
9
abstract 201841011027 .jpg
2018-03-28
10
201841011027-Correspondence to notify the Controller [22-10-2023(online)].pdf
2023-10-22
10
201841011027-FORM-9 [31-03-2018(online)].pdf
2018-03-31
10
201841011027-US(14)-HearingNotice-(HearingDate-25-10-2023).pdf
2023-10-10
11
201841011027-FORM 18 [20-04-2018(online)].pdf
2018-04-20
11
201841011027-FORM 3 [21-10-2020(online)].pdf
2020-10-21
11
201841011027-US(14)-HearingNotice-(HearingDate-25-10-2023).pdf
2023-10-10
12
201841011027-FORM 3 [11-08-2020(online)].pdf
2020-08-11
12
201841011027-FORM 3 [21-10-2020(online)].pdf
2020-10-21
12
201841011027-FORM 3 [27-06-2019(online)].pdf
2019-06-27
13
Correspoddence by Applicant_Priority Document of Certified_04-07-2019.pdf
2019-07-04
13
201841011027-FORM 3 [11-08-2020(online)].pdf
2020-08-11
13
201841011027-ABSTRACT [15-07-2020(online)].pdf
2020-07-15
14
201841011027-ABSTRACT [15-07-2020(online)].pdf
2020-07-15
14
201841011027-CLAIMS [15-07-2020(online)].pdf
2020-07-15
14
201841011027-FER.pdf
2020-02-20
15
201841011027-CLAIMS [15-07-2020(online)].pdf
2020-07-15
15
201841011027-FER_SER_REPLY [15-07-2020(online)].pdf
2020-07-15
15
201841011027-OTHERS [15-07-2020(online)].pdf
2020-07-15
16
201841011027-FER_SER_REPLY [15-07-2020(online)].pdf
2020-07-15
16
201841011027-FORM 3 [15-07-2020(online)].pdf
2020-07-15
17
201841011027-FORM 3 [15-07-2020(online)].pdf
2020-07-15
17
201841011027-OTHERS [15-07-2020(online)].pdf
2020-07-15
17
201841011027-FER_SER_REPLY [15-07-2020(online)].pdf
2020-07-15
18
201841011027-FER.pdf
2020-02-20
18
201841011027-OTHERS [15-07-2020(online)].pdf
2020-07-15
18
201841011027-CLAIMS [15-07-2020(online)].pdf
2020-07-15
19
201841011027-ABSTRACT [15-07-2020(online)].pdf
2020-07-15
19
201841011027-FER.pdf
2020-02-20
19
Correspoddence by Applicant_Priority Document of Certified_04-07-2019.pdf
2019-07-04
20
201841011027-FORM 3 [11-08-2020(online)].pdf
2020-08-11
20
201841011027-FORM 3 [27-06-2019(online)].pdf
2019-06-27
20
Correspoddence by Applicant_Priority Document of Certified_04-07-2019.pdf
2019-07-04
21
201841011027-FORM 3 [27-06-2019(online)].pdf
2019-06-27
21
201841011027-FORM 3 [21-10-2020(online)].pdf
2020-10-21
21
201841011027-FORM 18 [20-04-2018(online)].pdf
2018-04-20
22
201841011027-FORM 18 [20-04-2018(online)].pdf
2018-04-20
22
201841011027-FORM-9 [31-03-2018(online)].pdf
2018-03-31
22
201841011027-US(14)-HearingNotice-(HearingDate-25-10-2023).pdf
2023-10-10
23
201841011027-Correspondence to notify the Controller [22-10-2023(online)].pdf
2023-10-22
23
201841011027-FORM-9 [31-03-2018(online)].pdf
2018-03-31
23
abstract 201841011027 .jpg
2018-03-28
24
Abstract_As Filed_26-03-2018.pdf
2018-03-26
24
abstract 201841011027 .jpg
2018-03-28
24
201841011027-Annexure [22-10-2023(online)].pdf
2023-10-22
25
201841011027-Written submissions and relevant documents [09-11-2023(online)].pdf
2023-11-09
25
Abstract_As Filed_26-03-2018.pdf
2018-03-26
25
Claims_As Filed_26-03-2018.pdf
2018-03-26
26
201841011027-RELEVANT DOCUMENTS [09-11-2023(online)].pdf
2023-11-09
26
Claims_As Filed_26-03-2018.pdf
2018-03-26
26
Correspondence by Applicant_As Filed_26-03-2018.pdf
2018-03-26
27
201841011027-PETITION UNDER RULE 137 [09-11-2023(online)].pdf
2023-11-09
27
Correspondence by Applicant_As Filed_26-03-2018.pdf
2018-03-26
27
Description Complete_As Filed_26-03-2018.pdf
2018-03-26
28
201841011027-FORM 3 [09-11-2023(online)].pdf
2023-11-09
28
Description Complete_As Filed_26-03-2018.pdf
2018-03-26
28
Drawing_As Filed_26-03-2018.pdf
2018-03-26
29
201841011027-Annexure [09-11-2023(online)].pdf
2023-11-09
29
Drawing_As Filed_26-03-2018.pdf
2018-03-26
29
Form 1_As Filed_26-03-2018.pdf
2018-03-26
30
201841011027-PatentCertificate16-11-2023.pdf
2023-11-16
30
Form 1_As Filed_26-03-2018.pdf
2018-03-26
30
Form 3_As Filed_26-03-2018.pdf
2018-03-26
31
Form2 Title Page_Complete_26-03-2018.pdf
2018-03-26
31
Form 3_As Filed_26-03-2018.pdf
2018-03-26
31
201841011027-IntimationOfGrant16-11-2023.pdf
2023-11-16
32
Form2 Title Page_Complete_26-03-2018.pdf
2018-03-26
32
201841011027-FORM 4 [28-04-2025(online)].pdf
2025-04-28
Search Strategy
1
201841011027_03-10-2019.pdf
ERegister / Renewals
Inforce
3rd: 13 Feb 2024
CBR 9413
Renewal 13/02/2024
Renewal Amount ₹4,000
Certificate #27482
From 26/03/2020 - To 26/03/2021
4th: 13 Feb 2024
CBR 9413
Renewal 13/02/2024
Renewal Amount ₹4,000
Certificate #27483
From 26/03/2021 - To 26/03/2022
5th: 13 Feb 2024
CBR 9413
Renewal 13/02/2024
Renewal Amount ₹4,000
Certificate #27484
From 26/03/2022 - To 26/03/2023
6th: 13 Feb 2024
CBR 9413
Renewal 13/02/2024
Renewal Amount ₹4,000
Certificate #27485
From 26/03/2023 - To 26/03/2024
7th: 13 Feb 2024
CBR 9413
Renewal 13/02/2024
Renewal Amount ₹12,000
Certificate #27486
From 26/03/2024 - To 26/03/2025
8th: 29 Apr 2025
CBR 25451
Renewal 29/04/2025
Renewal Amount ₹12,000
Certificate #32762
From 26/03/2025 - To 26/03/2026