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Brake System Of Vehicle

Abstract: A brake system (100) comprising a front and rear wheel brake devices (101, 102), a brake lever (110), an integrated brake device (128) comprising a hydraulic cylinder and an actuator arm, a rear actuation cable (180) comprising an inner wire movable in relation to first and second outer casings (182, 184), wherein, upon actuation of the brake lever (110), the inner wire actuates the rear wheel brake device, and the second outer casing (184) pushes the actuator arm for actuating the hydraulic cylinder and applying brake to the front wheel (6) of the vehicle (1). The brake system (100) further comprises a parking brake lever (130) and a parking link (140) positioned between the actuator arm and the second outer casing. The parking link (140) is adapted to push the second outer casing (184) to actuate the rear wheel brake device (102) for applying parking brake in the vehicle (1).

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Patent Information

Application #
Filing Date
10 March 2022
Publication Number
37/2023
Publication Type
INA
Invention Field
MECHANICAL ENGINEERING
Status
Email
Parent Application

Applicants

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

Inventors

1. Aashish Goyal
2/87 Kudi Bhagatasani housing board Jodhpur Rajasthan India 342005
2. Nishant Rajesh
Flat 501, Shubhnivas Apartments 12-13-548, Street 14, Tarnaka Hyderabad Telangana India 500017

Specification

The present invention relates to vehicles, for example, two-wheeled vehicles, and more particularly, to brake systems for vehicles.
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] Conventionally, in two-wheeled vehicles, braking operation of a front wheel is actuated by application of force on a front wheel brake operator provided on a handlebar, and the braking operation of a rear wheel is actuated by application of force on a rear wheel brake operator. The rear wheel brake operator is provided either on the handlebar or provided in form of a foot pedal. The operation of the front and the rear wheel braking was normally controlled, by corresponding operator, independently. [004] For safe braking of the front and rear wheel of the two-wheeled vehicle, the balanced actuation of the front and the rear wheel brakes is necessary. If only the front wheel brake is applied, the rear wheel keeps rolling and the two-wheeled vehicle has risk of being toppled. If only the rear wheel brake is applied, the front wheel keeps rolling and the two-wheeled vehicle has the risk of skidding. To overcome said technical problem, there exists integrated braking systems in which a master cylinder unit is responsible for the interlock braking. The master cylinder unit has distributing mechanism to distribute input brake load from the brake operator into a hydraulic pressure which actuates the front wheel braking device and a mechanical force which actuates the rear wheel braking device.
[005] However, in the vehicles having said integrated braking system, at the time of applying parking brake, the rear brake device as well as the front brake device both get actuated with actuation of a parking brake operator. Due to this, pressure is created in the hydraulic lines associated with the front brake device, and prolonged hydraulic pressure created at the front brake device affects durability and life of the front brake system.
[006] Accordingly, there remained a need for an improved braking system that can overcome at least the problems identified above and that provides parking brake

actuation on the rear wheel without pressure generation in the front brake system, and thus improve the durability and life of the front brake device.
SUMMARY
[007] 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/ method 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.
[008] Pursuant to an embodiment of the present disclosure, in an aspect, a brake system for a vehicle is disclosed. The brake system comprises a front wheel brake device, a rear wheel brake device, a brake lever, an integrated brake device, a rear actuation cable, a parking brake lever, and a parking link. The front wheel brake device is configured to apply brake to a front wheel of the vehicle, and the rear wheel brake device is configured to apply brake to a rear wheel of the vehicle. The brake lever is adapted to be pivotally coupled with a handlebar of the vehicle, and is adapted to actuate the rear wheel brake, via the rear actuation cable, upon actuation of the brake lever. The integrated brake device comprising a hydraulic cylinder and an actuator arm. The rear actuation cable comprises a first outer casing provided between the brake lever and the integrated brake device, a second outer casing provided between the actuator arm and the rear wheel brake device, and an inner wire movable in relation to the first outer casing and the second outer casing, and configured to operatively couple the brake lever to the rear wheel brake device. Upon actuation of the brake lever, the inner wire is adapted to actuate the rear wheel brake device, and the second outer casing is adapted to push the actuator arm, as a result of reactive forces generated upon actuation of the brake lever, for actuating the hydraulic cylinder and applying brake to the front wheel of the vehicle. The parking brake is lever disposed on the handlebar of the vehicle. The parking link is coupled to the parking brake lever, via a parking brake actuation cable, the parking actuation cable having a first end coupled with the parking brake lever and a second end coupled with the parking link. Further, the parking link is positioned between the actuator arm and the second outer casing of the rear actuation cable, and

the parking link is adapted to push the second outer casing of the rear actuation cable
to actuate the rear wheel brake device, upon actuation of the parking brake lever, for
applying parking brake in the vehicle.
[009] Within the scope of the present disclosure, the braking system of the invention
facilitates applying brake only via the rear wheel brake device when the parking brake
lever is actuated, and thus parking brake actuation on the rear wheel is provided without
pressure generation in the front wheel brake device, thereby not affecting life and
durability of the front wheel brake device.
[010] In another non-limiting embodiment of the present disclosure, the parking link
is pivotable between an actuated position and an unactuated position, upon actuation of
the parking brake lever.
[Oil] In another non-limiting embodiment of the present disclosure, the parking brake
lever comprises a provision and a torsion spring. The provision is adapted to engage
with the brake lever for holding the parking brake lever in an actuated position. The
torsion spring is adapted to return the parking brake lever to an unactuated position,
upon actuation of the brake lever.
[012] Within the scope of the present disclosure, the provision facilitates securely
holding the parking brake lever in the actuated position and not allow return of the
parking brake lever to its original unactuated position, until required. Also, the torsion
spring provides returning the parking brake lever to the unactuated position when the
parking brake lever is released from the provision.
[013] In another non-limiting embodiment of the present disclosure, the parking link
is biased by a spring for returning the parking link to the unactuated position.
[014] In another non-limiting embodiment of the present disclosure, the second outer
casing is configured to abut the parking link at a first face of the parking link, and the
actuator arm is configured to abut the parking link at a second face of the parking link.
[015] In another non-limiting embodiment of the present disclosure, the parking link
comprises a slot defined at an end portion thereof.
[016] Pursuant to an embodiment of the present disclosure, in another aspect, a vehicle
is disclosed. The vehicle comprises a body frame, a front wheel and a rear wheel, an
engine unit and a transmission unit, and a brake system. The brake system comprises a
front wheel brake device, a rear wheel brake device, a brake lever, an integrated brake

device, a rear actuation cable, a parking brake lever, and a parking link. The front wheel brake device is configured to apply brake to the front wheel, and the rear wheel brake device is configured to apply brake to the rear wheel of the vehicle. The brake lever is adapted to be pivotally coupled with a handlebar of the vehicle, and is adapted to actuate the rear wheel brake, via the rear actuation cable, upon actuation of the brake lever. The integrated brake device comprising a hydraulic cylinder and an actuator arm. The rear actuation cable comprises a first outer casing provided between the brake lever and the integrated brake device, a second outer casing provided between the actuator arm and the rear wheel brake device, and an inner wire movable in relation to the first outer casing and the second outer casing, and configured to operatively couple the brake lever to the rear wheel brake device. Upon actuation of the brake lever, the inner wire is adapted to actuate the rear wheel brake device, and the second outer casing is adapted to push the actuator arm, as a result of reactive forces generated upon actuation of the brake lever, for actuating the hydraulic cylinder and applying brake to the front wheel of the vehicle. The parking brake is lever disposed on the handlebar of the vehicle. The parking link is coupled to the parking brake lever, via a parking brake actuation cable, the parking actuation cable having a first end coupled with the parking brake lever and a second end coupled with the parking link. Further, the parking link is positioned between the actuator arm and the second outer casing of the rear actuation cable, and the parking link is adapted to push the second outer casing of the rear actuation cable to actuate the rear wheel brake device, upon actuation of the parking brake lever, for applying parking brake in the vehicle.
[017] Within the scope of the present disclosure, the vehicle of the invention facilitates applying brake only via the rear wheel brake when the parking brake lever is actuated, and thus parking brake actuation on the rear wheel is provided without pressure generation in the front wheel brake device, thereby not affecting life and durability of the front wheel brake device.
[018] In another non-limiting embodiment of the present disclosure, the parking link is pivotable between an actuated position and an unactuated position, upon actuation of the parking brake lever.
[019] In another non-limiting embodiment of the present disclosure, the parking brake lever comprises a provision and a torsion spring. The provision is adapted to engage

with the brake lever for holding the parking brake lever in an actuated position. The
torsion spring is adapted to return the parking brake lever to an unactuated position,
upon actuation of the brake lever.
[020] Within the scope of the present disclosure, the provision facilitates securely
holding the parking brake lever in the actuated position and not allow return of the
parking brake lever to its original unactuated position, until required. Also, the torsion
spring provides returning the parking brake lever to the unactuated position, when the
parking brake lever is released from the provision.
[021] In another non-limiting embodiment of the present disclosure, the parking link
is biased by a spring for returning the parking link to the unactuated position.
[022] In another non-limiting embodiment of the present disclosure, the second outer
casing is configured to abut the parking link at a first face of the parking link, and the
actuator arm is configured to abut the parking link at a second face of the parking link.
[023] In another non-limiting embodiment of the present disclosure, the parking link
comprises a slot defined at an end portion thereof.
[024] It is to be understood that the aspects and embodiments of the disclosure
described above may be used in any combination. Several aspects and embodiments
may be combined together to form a further embodiment of the disclosure.
[025] 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
[026] 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:

[027] FIG. 1 illustrates a side view of the two-wheeled vehicle, comprising a brake
system, in accordance with an embodiment of the present disclosure;
[028] FIG.2 illustrates a view of the brake system of the present invention, in
accordance with an embodiment of the present disclosure;
[029] FIG. 3 illustrates an exploded view of some components of the brake system of
FIG. 2, in accordance with an embodiment of the present disclosure;
[030] FIG. 4 is a top view of some components of the brake system of FIG. 2, in which
a brake lever of the brake system is in an unactuated position, in accordance with an
embodiment of the present disclosure;
[031] FIG. 5 illustrates a top view of some components of the brake system of FIG. 2,
in which the brake lever of the brake system is in an actuated position, in accordance
with an embodiment of the present disclosure;
[032] FIG. 6 illustrates a top view of some components of the brake system of FIG. 2,
in which a parking brake lever of the brake system is in an unactuated position, in
accordance with an embodiment of the present disclosure;
[033] FIG. 7 illustrates a top view of some components of the brake system of FIG. 2,
in which the parking brake lever of the brake system is in an actuated position, in
accordance with an embodiment of the present disclosure;
[034] FIG. 8 illustrates a configuration of an integrated brake device of the brake
system, in which the parking brake lever of the brake system is in the actuated position,
in accordance with an embodiment of the present disclosure; and
[035] FIG. 9 illustrates a perspective view of a parking link of the brake system of
FIG. 2, in accordance with an embodiment of the present disclosure.
[036] 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
[037] 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.
[038] 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 brake system for a vehicle and a vehicle comprising the brake system. 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 brake system 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.
[039] 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. [040] 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.
[041] The terms like "at least one" and "one or more" may be used interchangeably or in combination throughout the description.
[042] While the present disclosure is illustrated in the context of a vehicle, however, brake system 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.
[043] 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. [044] In an aspect, a brake system for a vehicle is disclosed. The brake system comprises a front wheel brake device, a rear wheel brake device, a brake lever, an integrated brake device, a rear actuation cable, a parking brake lever, and a parking link. The front wheel brake device is configured to apply brake to a front wheel of the vehicle, and the rear wheel brake device is configured to apply brake to a rear wheel of the vehicle. The brake lever is adapted to be pivotally coupled with a handlebar of the vehicle, and is adapted to actuate the rear wheel brake, via the rear actuation cable, upon actuation of the brake lever. The integrated brake device comprising a hydraulic cylinder and an actuator arm. The rear actuation cable comprises a first outer casing provided between the brake lever and the integrated brake device, a second outer casing provided between the actuator arm and the rear wheel brake device, and an inner wire movable in relation to the first outer casing and the second outer casing, and configured to operatively couple the brake lever to the rear wheel brake device. Upon actuation of the brake lever, the inner wire is adapted to actuate the rear wheel brake device, and the second outer casing is adapted to push the actuator arm, as a result of reactive forces generated upon actuation of the brake lever, for actuating the hydraulic cylinder and applying brake to the front wheel of the vehicle. The parking brake is lever disposed on the handlebar of the vehicle. The parking link is coupled to the parking brake lever, via a parking brake actuation cable, the parking actuation cable having a first end coupled with the parking brake lever and a second end coupled with the parking link. Further, the parking link is positioned between the actuator arm and the second outer casing of the rear actuation cable, and the parking link is adapted to push the second outer casing of the rear actuation cable to actuate the rear wheel brake device, upon actuation of the parking brake lever, for applying parking brake in the vehicle.
[045] In an embodiment, the parking link is pivotable between an actuated position and an unactuated position, upon actuation of the parking brake lever. In another embodiment, the parking brake lever comprises a provision and a torsion spring. The

provision is adapted to engage with the brake lever for holding the parking brake lever in an actuated position. The torsion spring is adapted to return the parking brake lever to an unactuated position, upon actuation of the brake lever. In some embodiments, the parking link is biased by a spring for returning the parking link to the unactuated position. In further embodiments, the second outer casing is configured to abut the parking link at a first face of the parking link, and the actuator arm is configured to abut the parking link at a second face of the parking link. In an embodiment, the parking link comprises a slot defined at an end portion thereof.
[046] In another aspect, a vehicle is disclosed. The vehicle comprises a body frame, a front wheel and a rear wheel, an engine unit and a transmission unit, and a brake system. The brake system comprises a front wheel brake device, a rear wheel brake device, a brake lever, an integrated brake device, a rear actuation cable, a parking brake lever, and a parking link. The front wheel brake device is configured to apply brake to the front wheel, and the rear wheel brake device is configured to apply brake to the rear wheel of the vehicle. The brake lever is adapted to be pivotally coupled with a handlebar of the vehicle, and is adapted to actuate the rear wheel brake, via the rear actuation cable, upon actuation of the brake lever. The integrated brake device comprising a hydraulic cylinder and an actuator arm. The rear actuation cable comprises a first outer casing provided between the brake lever and the integrated brake device, a second outer casing provided between the actuator arm and the rear wheel brake device, and an inner wire movable in relation to the first outer casing and the second outer casing, and configured to operatively couple the brake lever to the rear wheel brake device. Upon actuation of the brake lever, the inner wire is adapted to actuate the rear wheel brake device, and the second outer casing is adapted to push the actuator arm, as a result of reactive forces generated upon actuation of the brake lever, for actuating the hydraulic cylinder and applying brake to the front wheel of the vehicle. The parking brake is lever disposed on the handlebar of the vehicle. The parking link is coupled to the parking brake lever, via a parking brake actuation cable, the parking actuation cable having a first end coupled with the parking brake lever and a second end coupled with the parking link. Further, the parking link is positioned between the actuator arm and the second outer casing of the rear actuation cable, and the parking link is adapted to push the second outer casing of the rear actuation cable to actuate the rear wheel brake

device, upon actuation of the parking brake lever, for applying parking brake in the vehicle.
[047] In an embodiment, the parking link is pivotable between an actuated position and an unactuated position, upon actuation of the parking brake lever. In another embodiment, the parking brake lever comprises a provision and a torsion spring. The provision is adapted to engage with the brake lever for holding the parking brake lever in an actuated position. The torsion spring is adapted to return the parking brake lever to an unactuated position, upon actuation of the brake lever. In some embodiments, the parking link is biased by a spring for returning the parking link to the unactuated position. In further embodiments, the second outer casing is configured to abut the parking link at a first face of the parking link, and the actuator arm is configured to abut the parking link at a second face of the parking link. In an embodiment, the parking link comprises a slot defined at an end portion thereof.
[048] Reference will now be made to the exemplary embodiments of the 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 9. In FIGS. 1 to 9, the same element or elements which have same functions are indicated by the same reference signs.
[049] The present disclosure relates to a vehicle (1), for example, a two-wheeled vehicle, such as a scooter, according to an embodiment of the invention. As illustrated in FIG. 1, the vehicle (1) comprises a vehicle body frame (2), a pair of front forks (3), a front fender (not shown), a rear fender (not shown), a front wheel (6), a steering handle bar (7), a fuel tank (not shown) provided below a seat (not shown) of the vehicle (1), a utility box (not shown), an engine unit or a power unit (4), an exhaust system (not shown), an engine cooling fan unit (not shown), a side body cover (not shown), a front cover (not shown), a leg shield (not shown), a lower front cover (not shown), a tail light (not shown), a headlight (not shown), a foot board (not shown), a rear suspension (5), a rear grip (not shown), and a rear wheel (16). The vehicle body frame (2) comprises a pair of seat sub-frames (11) for mounting the seat.
[050] With reference to FIG. 1, a head tube (10) of the vehicle body frame (2) is steerably connected to the front forks (3) and the front wheel (6) is attached to a lower

end of the front forks (3). The handlebar (7) is attached to an upper end of the head tube (10). The head light is arranged in front of the handlebar (7). The front fender is provided so as to cover an upper portion of the front wheel (6). The seat on which a rider straddles is supported by the seat sub frames (11). The leg shield that protects legs of the rider is provided on the front side. The tail light and the rear fender are provided at a rear portion of the vehicle body frame (2). The engine unit (4) is arranged under the seat of the vehicle (1). The vehicle (1) further comprises a brake system (100) for applying brake to the front wheel (6) and/ or the rear wheel (16) of the vehicle (1), and for controlling operations of the vehicle (1).
[051] Referring to FIG. 2, the brake system (100) of the vehicle (1) is shown. The brake system (100) is configured to apply brake to the front wheel (6) and/ or the rear wheel (16) of the vehicle (1), during running condition or operation of the vehicle (1). Further, the brake system (100) is configured to apply parking brake in the vehicle (1) in which brake is only applied to the rear wheel (16) of the vehicle (1). [052] With reference to FIGS. 2 to 8, the brake system (100) of the present disclosure comprises a front wheel brake device (101), a rear wheel brake device (102), a brake lever (110), an integrated brake device (128), a rear actuation cable (180), a parking brake lever (130), a parking link (140), a parking brake actuation cable (150), and a front actuation member (160). Within the scope of the present disclosure, the front wheel brake device (101) is disposed on the front wheel (6) of the vehicle (1) and is configured to apply brake to the front wheel (6). Also, the rear wheel brake device (102) is disposed on the rear wheel (16) of the vehicle (1) and is configured to apply brake to the rear wheel (16) of the vehicle (1). Without deviating from the scope of the present disclosure, the front wheel brake device (101) is associated with a right portion of the handlebar (7) of the vehicle (1). In an exemplary embodiment, a right brake lever (not visible in FIGS. 1 and 2) is provided at the right-side of the handlebar (7) of the vehicle (1), when seen by the rider sitting astride on the vehicle (1), and upon actuation of the right brake lever, the front wheel brake device applies brake to the front wheel (6) of the vehicle (1). Further, the rear wheel brake device (102) is associated with a left portion of the handlebar (7) of the vehicle (1). In an exemplary embodiment, a left brake lever (110) (also referred to as "the brake lever (110)") is provided at the left-side of

the handlebar (7) of the vehicle (1), and upon actuation of the left brake lever (110), the rear wheel brake device (102) applies brake to the rear wheel (16) of the vehicle (1). [053] In accordance with the present disclosure, the brake system (100) of the present disclosure may comprise a lever bracket (104) mounted on the handlebar (7) of the vehicle (1). As shown in FIGS. 3 to 7, the lever bracket (104) may be mounted on the left-side of the handlebar (7). The lever bracket (104) may be configured to mount the components of the brake system (100) on the handlebar (7) of the vehicle (1). The lever bracket may be adapted to be fastened to the handlebar (7) of the vehicle (1) and facilitate mounting the components of the brake system (100) thereon. In an embodiment, the lever bracket (104) is a 'fork-shaped' element with two legs, one of which is coupled at an upper surface of the handlebar (7) and the other is coupled with a lower surface of the handlebar (7), thereby creating a space therebetween to receive one or more components, for example, the brake lever (110), etc., of the brake system (100), therein.
[054] Referring to FIGS. 3, 4 and 5, the brake lever (110) is adapted to be pivotally coupled with the handlebar (7) of the vehicle (1). In an exemplary embodiment, the brake lever (110) is adapted to be pivotally coupled with the lever bracket (104). In the illustrated embodiment, the brake lever (110) is adapted to be received within the lever bracket (104) such that the brake lever (110) is coupled with the lever bracket (104) via a first pivot pin (112). The first pivot pin (112) facilitates a pivotal movement of the brake lever (110), with respect to the lever bracket (104), between an actuated position and an unactuated position of the brake lever (110). Within the scope of the present disclosure, the actuated position of the brake lever (110) may be understood as a position in which the brake lever (110) has been pressed (to pivot with respect to the lever bracket (104)) for triggering the rear wheel brake device (102) (and the front wheel brake device (101)), and thus applying brake to the rear wheel (16) (and the front wheel (6), respectively) of the vehicle (1). Also, the unactuated position of the brake lever (110) can be understood as a position in which the brake lever (110) is at a rest position, i.e., when no brake is applied to the rear wheel (16) of the vehicle (1). In accordance with the present disclosure, the brake lever (110) is adapted to actuate the rear wheel brake device (102), via the rear actuation cable (180), upon actuation of the brake lever (110).

[055] The brake system (100) of the present disclosure further comprises the integrated brake device (128), as shown in FIG. 8. The integrated brake device (128) comprises a hydraulic cylinder (122), an actuator arm (124) and a bracket (129). In an embodiment, the bracket (129) may be realized in the form of a casing at least partially enclosing the hydraulic cylinder (122) and the actuator arm (124). The hydraulic cylinder (122) may be mounted on the bracket (129), and may comprise a first cylinder opening, a second cylinder opening, and a piston. The first cylinder opening of the hydraulic cylinder may be fluidically connected to the right brake lever by an actuation member. Also, the second cylinder opening of the hydraulic cylinder may be fluidically connected to the front wheel brake device (101) by the front actuation member (180). Within the scope of the present disclosure, the actuator arm (124) may be pivotally mounted the bracket (129) and may be adapted to freely rotate about an axis that is perpendicular to a main surface of the bracket (129).
[056] The brake system (100) of the present disclosure further comprises the parking brake lever (130), as shown in FIGS. 3 to 7. In accordance with the present disclosure, the parking brake lever (130) is disposed on the handlebar (7) of the vehicle (1). In an embodiment, the parking brake lever (130) is adapted to be pivotally coupled with the lever bracket (104). Also, the parking brake lever (130) is adapted to actuate the rear wheel brake device (102), via the parking brake actuation cable (150) and the rear actuation cable (180), upon actuation of the parking brake lever (130), for applying the parking brake in the vehicle (1). In the illustrated embodiment, the parking brake lever (130) is adapted to be pivotally mounted on the lever bracket (104) via a second pivot pin (132). In alternate embodiment, the parking brake lever (130) may be adapted to be pivotally mounted on the lever bracket (104) via the first pivot pin (112). The second pivot pin (132) (or the first pivot pin (112)) facilitates a pivotal movement of the parking brake lever (130), with respect to the lever bracket (104), between an actuated position and an unactuated position of the parking brake lever (130). Within the scope of the present disclosure, the actuated position of the parking brake lever (130) may be understood as a position in which the parking brake lever (130) has been pressed (to pivot with respect to the lever bracket (104)) for triggering the rear wheel brake device (102), and thus applying brake to the rear wheel (16) of the vehicle (1). Also, the unactuated position of the parking brake lever (130) can be understood as a position in

which the parking brake lever (130) is at a rest position, i.e., when no parking brake is applied to the rear wheel (16) of the vehicle (1).
[057] Within the scope of the present disclosure, the parking brake lever (130) is coupled with the lever bracket (104) via a torsion spring (not shown) of the parking brake lever (130). Said torsion spring facilitates the parking brake lever (130) to pivot with respect to the lever bracket (104), upon actuation of the parking brake lever (130). Also, when the parking brake lever (130) is being released from the actuated position of the parking brake lever (130), the torsion spring is configured to return the parking brake lever (130) to the unactuated position of the parking brake lever (130). [058] Within the scope of the present disclosure, the parking brake lever (130) comprises a provision (134) defined in a body of the parking brake lever (130). The provision (134) is adapted to engage with the brake lever (110) for holding the parking brake lever (130) in the actuated position of the parking brake lever (130). In an exemplary embodiment, the provision (134) of the parking brake lever (130) is a cutout defined between two arms (135, 136) of the parking brake lever (130) that extend at an angle to each other, as shown in FIGS. 3 to 7. The provision (134) of the parking brake lever (130) is adapted to engage with the brake lever (110) for holding the parking brake lever (130) in the actuated position of the parking brake lever (130). Without deviating from the scope of the present disclosure, the brake lever (110) comprises a holding pin (114) disposed within the holding pin casing (116) defined along a length of the brake lever (110). The holding pin casing (116) is disposed along the length of the brake lever (110) such that the holding pin (114) is adapted to engage with the provision (134) of the parking brake lever (130) for holding the parking brake lever (130) in the actuated position. The holding pin (114) of the brake lever (110) is disposed within the holding pin casing (116) via a compressed spring (not shown) such that the holding pin (114) is movable along a height-wise direction of the vehicle (1), when any external force is being applied on the holding pin (114).
[059] In accordance with the present disclosure, to engage the provision (134) of the parking brake lever (130) with the brake lever (110), an intersection of the arms of the parking brake lever (130) that is adjacent the provision (134) of the parking brake lever (130) is passed over the holding pin (114) of the brake lever (110) such that the holding pin (114) is pushed in a downward direction. Consequently, when the provision (134)

of the parking brake lever (130) is aligned vertically above the holding pin (114), the compressed spring biases the holding pin (114) away from a bottom surface of the holding pin casing (116), thus positioning the holding pin (114) of the brake lever (110) in the provision (134) of the parking brake lever (130), thereby holding the parking brake lever (130) in the actuated position of the parking brake lever (130), as shown in FIG. 6.
[060] In accordance with the present disclosure, to disengage the parking brake lever (130) from the brake lever (110) or for returning the parking brake lever (130) to the unactuated position, the brake lever (110) is actuated to move towards the actuated position of the brake lever (110), as shown in FIG. 5, causing the holding pin (114) to come under the intersection of the arms (135, 136) of the parking brake lever (130). Consequently, the torsion spring of the parking brake lever (130) biases the parking brake lever (130) to the unactuated position from the actuated position, as shown in FIG. 6.
[061] The brake system (100) of the present disclosure furthermore comprises the parking link (140), as shown in FIG. 9. In accordance with the present disclosure, the parking link (140) may be disposed on the bracket (129) of the integrated brake device (128) such that the parking link (140) is adapted to be pivotable, with respect to the integrated brake device (128), between an actuated position and an unactuated position of the parking link (140), upon actuation of the parking brake lever (130). In an embodiment, the parking link (140) is biased against the integrated brake device (128) with a spring (148) for returning the parking link (140) to the unactuated position. In alternate embodiments, the parking link (140) may be mounted on the body frame (2) of the vehicle (1).
[062] Within the scope of the present disclosure, the parking link (140) is coupled to the parking brake lever (130) via the parking brake actuation cable (150), such that the parking link (140) is adapted to pivot with respect to the integrated brake device (128), upon actuation of the parking brake lever (130). In accordance with the illustrated embodiment, the parking link (140) may be positioned between the actuator arm of the integrated brake device (128) and the rear actuation cable (180). Also, the parking link (140) may be adapted to actuate the rear actuation cable (180), to thus actuate the rear

wheel brake device (102), upon actuation of the parking brake lever (130), for applying parking brake in the vehicle (1).
[063] Further, the brake system (100) of the present disclosure comprises the front actuation member (160), the rear actuation cable (180), and the parking brake actuation cable (150), as shown in FIGS. 2 to 8. In accordance with the present disclosure, the front actuation member (160) is constituted by a hydraulic line. In alternate embodiment, the front actuation member (160) may be a conventional brake cable including a front inner cable enclosed within a front outer sheath, in such a manner that the front inner cable is movable in relation with the front outer sheath. As shown in FIG. 2, the front actuation member (160) is configured to extend between the integrated brake device (128) and the front wheel brake device (101) for applying brake to the front wheel (6) of the vehicle (1), upon actuation of the right brake lever or the left brake lever (110).
[064] In accordance with the present disclosure, the rear actuation cable (180) is a conventional brake cable including a rear inner cable enclosed within a rear outer sheath, in such a manner that the rear inner cable is movable in relation with the rear outer sheath. As shown in FIGS. 2 to 8, the rear actuation cable (180) is configured to extend between the brake lever (110) and the rear wheel brake device (102). Further, the brake lever (110) is adapted to actuate the rear wheel brake device (102) via the rear actuation cable (180), upon actuation of the brake lever (110) from the unactuated position to the actuated position. Within the scope of the present disclosure, the rear actuation cable (180) comprises an inner wire enclosed within a first outer casing (182) and a second outer casing (184) of the rear actuation cable (180). The inner wire is configured to be movable in relation to the first outer casing (182) and the second outer casing (184). In accordance with the present disclosure, the inner wire extends between the brake lever (110) and the rear wheel brake device (102), and the inner wire is configured to operatively couple the brake lever (110) to the rear wheel brake device (102). Further, the first outer casing (182) of the rear actuation cable (180) extends between the brake lever (110) and the integrated brake device (128), and the second outer casing (184) of the rear actuation cable (180) extends between the actuator arm (124) of the integrated brake device (128) and the rear wheel brake device (102).

[065] Within the scope of the present disclosure, upon actuation of the brake lever (110), the inner wire of the rear actuation cable (180) is adapted to actuate the rear wheel brake device (102) for applying brake to the rear wheel (16) of the vehicle (1). Also, upon actuation of the brake lever (110), the second outer casing (184) of the rear actuation cable (180) is adapted to push the actuator arm (124) of the integrated brake device (128), as a result of reactive forces generated upon actuation of the brake lever (110), for actuating the hydraulic cylinder of the integrated brake device (128) and thus applying brake to the front wheel (6) of the vehicle (1), via the front actuation member (160).
[066] Without deviating from the scope of the present disclosure, the inner wire of the rear actuation cable (180) may comprise cable clamps attached to ends of the inner wire. The cable clamps of the inner wire may engage with a respective clamp holder adapted to be disposed on the brake lever (110) and the rear wheel brake device (102). Similarly, the first outer casing (182) and the second outer casing (184) of the rear actuation cable (180) may comprise cable clamps attached to ends thereof. The cable clamps of the first and second outer casings (182,184) may engage with a respective clamp holder adapted to be disposed in flanges and/or protuberances defined in the brake lever (110), the integrated brake device (128), and the rear wheel brake device (102). [067] The parking brake actuation cable (150) is a conventional brake cable including an inner cable (152) enclosed within an outer casing (154), in such a manner that the inner cable (152) is movable in relation with the outer casing (154). As shown in FIGS. 2 to 8, the parking brake actuation cable (150) is configured to extend between the parking brake lever (130) and the parking link (140). In an embodiment, the parking brake lever (130) is coupled to the parking link (140) via the parking brake actuation cable (150) such that a first end of the parking brake actuation cable (150) is coupled with the parking brake lever (130) and a second end of the parking brake actuation cable (150) is coupled with the parking link (140). The parking brake lever (130) is adapted to actuate the parking link (140) via the parking brake actuation cable (150), upon actuation of the brake lever (130) from the unactuated position to the actuated position. It can be contemplated that a length of the parking brake actuation cable (150) extending between the parking brake lever (130) and the parking link (140) is fixed and when the parking brake lever (130) is actuated from the unactuated position to the actuated

position, around the second pivot pin (132), the parking brake actuation cable (150) causes the parking link (140) to pivot with respect to the bracket (129) of the integrated brake device (128).
[068] Within the scope of the present disclosure, in an embodiment, as shown in FIG. 9, the parking link (140) is arranged with respect to the integrated brake device (128) such that the second outer casing (184) of the rear actuation cable (180) is configured to abut the parking link (140) at a first face (142) of the parking link (140), and the actuator arm of the integrated brake device (128) is configured to abut the parking link (140) at a second face (144) of the parking link (140), the second face (144) of the parking link (140) being disposed opposite to the first face (142) of the parking link (140). In said embodiment, upon actuation of the parking brake lever (130), the parking link (140) is adapted to push the second outer casing (184) of the rear actuation cable (180) to actuate the rear wheel brake device (102) for applying parking brake in the vehicle (1). In accordance with the illustrated embodiment, the parking link (140) comprises a slot (146), as also shown in FIG. 8, defined at the first face (142) of the parking link (140). The slot (146) is adapted to facilitate coupling the parking brake actuation cable (150) with the parking link (140). The slot (146) further provides clearance for a portion of the parking brake actuation cable (150) disposed within the slot (146) such that the when the parking link (146) pivots to actuate the actuator arm of the integrated brake device (128), no tension or compression is induced in the parking brake actuation cable (150).
[069] In accordance with the present disclosure, to apply brake only on the front wheel (6) of the vehicle (1), the right brake lever may be pressed to subject the right brake lever to the input load. Consequently, the right brake lever, via the actuation member, induces pressure differential across the piston of the integrated brake device (128), which thus actuates the front wheel brake device (101), via the front actuation member (160), to apply brake to the front wheel (6) of the vehicle (1).
[070] Further, to apply brake to the rear wheel (16) and the front wheel (6) of the vehicle (1), the left brake lever (110) or the brake lever (110) may be actuated from the unactuated position to the actuated position to subject the brake lever (110) to the input load. Consequently, the brake lever (110) pulls the inner wire of the rear actuation cable (180) to actuate the rear wheel brake device (102) for applying brake to the rear wheel

(16) of the vehicle (1). Further, due to the reaction forces, subject to initial delays provided in the brake system (100), the second outer casing (184) of the rear actuation cable (180) pushes the actuator arm (124), and thus the actuator arm (124) pivots around the axis. The initial delays are due to the stiffness of the second outer casing (184) of the rear actuation cable (180) and friction forces between the inner wire and the first and second outer casings (182, 184). The pivotal movement of the actuator arm (124) of the integrated brake device (128) creates pressure differential across the piston of the hydraulic cylinder (122), and thus pushes the piston of the hydraulic cylinder (122) to actuate the front wheel brake device (101) for applying brake to the front wheel (6) of the vehicle (1).
[071] As per an embodiment of the present disclosure, an operation and actuation of parking brake, via the parking brake lever (130), may be understood as follows: [072] When it is desired to park the vehicle (1), the parking brake lever (130) may be actuated from the unactuated position to the actuated position by pivoting the parking brake lever (130) around the second pivot pin (132). Consequently, the parking brake lever (130) pushes the parking link (140) causing the parking link (140) to pivot with respect to the integrated brake device (128), and push the second outer casing (184) of the rear actuation cable (180) relative to the inner wire of the rear actuation cable (180), thereby pulling the inner wire for actuating the rear wheel brake device (102) to apply brake on the rear wheel (16) of the vehicle (1).
[073] It can accordingly be contemplated that actuation of the parking brake lever (130), from the unactuated position to the actuated position, facilitates applying brake only on the rear wheel (16) of the vehicle (1), and thus parking brake actuation on the rear wheel (16) is provided without pressure generation in the front wheel brake device (101), thereby not affecting life and durability of the front wheel brake device (101). [074] Within the scope of the present disclosure, the braking system (100) of the present disclosure facilitates applying brake only via the rear wheel brake device (102) when the parking brake lever (130) is actuated, and thus parking brake actuation on the rear wheel (16) is provided without pressure generation in the front wheel brake device (101), thereby not affecting life and durability of the front wheel brake device (101). Further, the provision (134) of the parking brake lever (130) facilitates securely holding the parking brake lever (130) in the actuated position and not allow return of the parking

brake lever (130) to its original unactuated position until required. Also, the torsion spring provides returning the parking brake lever (130) to the unactuated position when the parking brake lever (130) is released from the holding pin (114). [075] 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. [076] 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.
[077] 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.
[078] 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.
[079] 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:
[080] 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.
[081] 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.
[082] 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. [083] 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
We Claim:

1. A brake system (100) of a vehicle (1), the brake system (100) comprising:
a front wheel brake device (101) configured to apply brake to a front wheel (6) of the vehicle (1);
a rear wheel brake device (102) configured to apply brake to a rear wheel (16) of the vehicle (1);
a brake lever (110) adapted to be pivotally coupled with a handlebar (7) of the vehicle (1), and adapted to actuate the rear wheel brake (102), via a rear actuation cable (180), upon actuation of the brake lever (110);
an integrated brake device (128) comprising a hydraulic cylinder and an actuator arm;
the rear actuation cable (180), comprising
a first outer casing (182) provided between the brake lever (110) and the integrated brake device (128);
a second outer casing (184) provided between the actuator arm and the rear wheel brake device (102); and
an inner wire movable in relation to the first outer casing (182) and the second outer casing (184), and configured to operatively couple the brake lever (110) to the rear wheel brake device (102), wherein, upon actuation of the brake lever (110),
the inner wire is adapted to actuate the rear wheel brake device (102), and
the second outer casing (184) is adapted to push the actuator arm, as a result of reactive forces generated upon actuation of the brake lever (110), for actuating the hydraulic cylinder and applying brake to the front wheel (6) of the vehicle
(i);
a parking brake lever (130) disposed on the handlebar (7) of the vehicle (1); and

a parking link (140) coupled to the parking brake lever (130), via a parking brake actuation cable (150), the parking actuation cable (150) having a first end coupled with the parking brake lever (130) and a second end coupled with the parking link (140),
wherein the parking link (140) is positioned between the actuator arm and the second outer casing (184) of the rear actuation cable (180), and the parking link (140) is adapted to push the second outer casing (184) of the rear actuation cable (180) to actuate the rear wheel brake device (102), upon actuation of the parking brake lever (130), for applying parking brake in the vehicle (1).
2. The brake system (100) as claimed in claim 1, wherein the parking link (140) is pivotable between an actuated position and an unactuated position, upon actuation of the parking brake lever (130).
3. The brake system (100) as claimed in claim 1, wherein the parking brake lever (130) comprises a provision (134) and a torsion spring, wherein
the provision (134) is adapted to engage with the brake lever (110) for holding the parking brake lever (130) in an actuated position, and
the torsion spring is adapted to return the parking brake lever (130) to an unactuated position, upon actuation of the brake lever (110).
4. The brake system (110) as claimed in claim 2, wherein the parking link (140) is biased by a spring for returning the parking link (140) to the unactuated position.
5. The brake system (100) as claimed in claim 1, wherein the second outer casing (184) is configured to abut the parking link (140) at a first face (142) of the parking link (140); and
the actuator arm is configured to abut the parking link (140) at a second face (144) of the parking link (140).

6. The brake system (100) as claimed in claim 1, wherein the parking link (140) comprises a slot (146) defined at an end portion thereof.
7. A vehicle (1), comprising:
a body frame (2);
a front wheel (6) and a rear wheel (16);
an engine unit (4) and a transmission unit; and
a brake system (100), comprising
a front wheel brake device (101) configured to apply brake to the front wheel (6);
a rear wheel brake device (102) configured to apply brake to the rear wheel (16);
a brake lever (110) adapted to be pivotally coupled with a handlebar (7) of the vehicle (1), and adapted to actuate the rear wheel brake device (102), via a rear actuation cable (180), upon actuation of the brake lever (110);
an integrated brake device (128) comprising a hydraulic cylinder and an actuator arm;
the rear actuation cable (180), comprising
a first outer casing (182) provided between the brake lever (110) and the integrated brake device (128);
a second outer casing (184) provided between the actuator arm and the rear wheel brake device (102); and
an inner wire movable in relation to the first outer casing
(182) and the second outer casing (184), and configured to
operatively couple the brake lever (110) to the rear wheel brake
device (102), wherein, upon actuation of the brake lever (110),
the inner wire is adapted to actuate the rear wheel
brake device (102), and
the second outer casing (184) is adapted to push the actuator arm, as a result of reactive forces generated upon actuation of the brake lever (110), for actuating the

hydraulic cylinder and applying brake to the front wheel (6) of the vehicle (1); a parking brake lever (130) disposed on the handlebar (7) of the
vehicle (1); and
a parking link (140) coupled to the parking brake lever (130), via
a parking brake actuation cable (150), the parking actuation cable (150)
having a first end coupled with the parking brake lever (130) and a
second end coupled with the parking link (140),
wherein the parking link (140) is positioned between the actuator arm and the second outer casing (184) of the rear actuation cable (180), and the parking link (140) is adapted to push the second outer casing (184) of the rear actuation cable (180) to actuate the rear wheel brake device (102), upon actuation of the parking brake lever (130), for applying parking brake in the vehicle (1).
The vehicle (1) as claimed in claim 7, wherein the parking link (140) is pivotable between an actuated position and an unactuated position, upon actuation of the parking brake lever (130).
The vehicle (1) as claimed in claim 7, wherein the parking brake lever (130) comprises a provision (134) and a torsion spring, wherein
the provision (134) is adapted to engage with the brake lever (110) for holding the parking brake lever (130) in an actuated position, and
the torsion spring is adapted to return the parking brake lever (130) to an unactuated position, upon actuation of the brake lever (110).
The vehicle (1) as claimed in claim 8, wherein the parking link (140) is biased by a spring for returning the parking link (140) to the unactuated position.

11. The vehicle (1) as claimed in claim 7, wherein the second outer casing (184) is
configured to abut the parking link (140) at a first face (142) of the parking link
(140); and
the actuator arm is configured to abut the parking link (140) at a second face (144) of the parking link (140).
12. The vehicle (1) as claimed in claim 7, wherein the parking link (140) comprises
a slot (146) defined at an end portion thereof.

Documents

Application Documents

# Name Date
1 202211013063-STATEMENT OF UNDERTAKING (FORM 3) [10-03-2022(online)].pdf 2022-03-10
2 202211013063-POWER OF AUTHORITY [10-03-2022(online)].pdf 2022-03-10
3 202211013063-FORM 1 [10-03-2022(online)].pdf 2022-03-10
4 202211013063-DRAWINGS [10-03-2022(online)].pdf 2022-03-10
5 202211013063-DECLARATION OF INVENTORSHIP (FORM 5) [10-03-2022(online)].pdf 2022-03-10
6 202211013063-COMPLETE SPECIFICATION [10-03-2022(online)].pdf 2022-03-10
7 202211013063-Proof of Right [13-06-2022(online)].pdf 2022-06-13
8 202211013063-FORM 18 [01-05-2024(online)].pdf 2024-05-01