The present disclosure relates to the field of automobiles. Particularly, but
not exclusively, the present disclosure relates to a modular vehicle being configured to operate in a two-wheel and three-wheel configurations. Embodiments of the present disclosure disclose a brake device of the modular vehicle.
BACKGROUND
[0002] Vehicles such as, but not limited to, motorized scooters, motorcycles, etc.,
among other of components and assemblies include body frame, a power unit, a passenger seating area, a storage space, and a set of wheels. The power unit is adapted to provide the necessary power to the wheels, to drive the vehicle. The power unit, seating area, storage space, etc., are all carried by the body frame. The wheels are connected to the body frame. Therefore, the body frame is designed to carry the load of the vehicle, including the weight of the power unit, other components, and sub-assemblies of the vehicle. Such weight carried by the body frame is transferred, through the ground engaging members, to the ground.
[0003] There are situations or needs which require a vehicle to be used as a two
wheeled at one instance and as a three wheeled vehicle at other. However, providing such modular vehicles which may be transformed from a two-wheeled vehicle to a three-wheeled vehicle and vice versa according to need is a difficult and cumbersome task. For instance, conversion of braking systems from two-wheeled configuration to three-wheeled configuration to meet statutory requirements of three-wheeled configuration is a cumbersome task. Such conversion is expensive and requires considerable time and modifications.
[0004] The present disclosure is directed to overcome one or more limitations
stated above or any other limitations associated with the conventional vehicles.
SUMMARY

[0005] A modular vehicle is disclosed in accordance with an embodiment of the
present disclosure which is configured to selectively operate in either one of a two-wheeled configuration and/or a three-wheeled configuration. Said modular vehicle can be easily converted from a two wheeled vehicle to a three wheeled vehicle, and vice versa, according to the requirements.
[0006] In accordance with an aspect of the present disclosure, a braking circuit of
the modular vehicle is described. The braking circuit includes a front brake unit coupled to a front ground engaging member supported by a primary frame of the modular vehicle. The front brake unit comprises a disc and a three-pot calliper operatively disposed alongside the front ground engaging member. The braking circuit further includes a rear brake unit operatively coupled to at least one rear ground engaging members supported by a secondary frame removably connectable to the primary frame of the modular vehicle. A first master cylinder is supported on a steering mechanism of the modular vehicle and fluidly coupled to at least one pot of the three-pot calliper of the front brake unit. The first master cylinder is operable by a brake lever provided on the steering mechanism and actuation of the first master cylinder engages front brake unit to apply brake on the front ground engaging member in the two-wheel configuration. Further, an auxiliary master cylinder is supported by the primary frame and is fluidly connected to remaining pots of the three-pot calliper. A second master cylinder is supported by the secondary frame and is fluidly coupled to the rear brake unit. The auxiliary master cylinder and the second master cylinder is operable by a brake pedal through a lever. Actuation of the auxiliary master cylinder and the second master cylinder engages both front brake unit and the rear brake unit to apply brake on the front ground engaging member and the rear ground engaging members in the three-wheel configuration. The braking circuit of the present disclosure enables effective braking of the modular vehicle in both two-wheeled and three-wheeled configuration. The braking circuit according to the present disclosure effectively engages the front and rear brake unit of the three-wheeled vehicle for effective braking. Also, the braking circuit is relatively simple and has less maintenance. The braking circuit of the present disclosure is cost effective and

can be readily actuated without any modifications based on operational configuration of the vehicle.
[0007] In an embodiment, the link is a bell crank lever. The brake pedal is coupled
to the link through transmitting member. Operation of the brake pedal to an engaged condition results in actuation of the transmitting member resulting in movement of link to an engaged position for operating the auxiliary master cylinder and the second master cylinder. The auxiliary master cylinder and the second master cylinder is engaged at the same time by the link which helps in effective engaging of the front brake unit and the rear brake unit.
[0008] In an embodiment, the first master cylinder is fluidly coupled to the three-
pot calliper of the front brake unit by a front brake hose. The auxiliary master cylinder is operatively coupled to the three-pot calliper of the front brake unit by a brake hose and is structured to operate the front brake unit when the modular vehicle is operated in the three-wheel configuration. The remaining pots of the three-pot calliper is interconnected to distribute hydraulic fluid.
[0009] In an embodiment, the second master cylinder is operatively coupled to the
rear brake unit through a rear brake hose.
[00010] In accordance with another aspect of the present disclosure, a modular
vehicle is described. The modular vehicle includes a primary frame defining the two-wheel configuration, a swing arm member pivotally coupled with the first body frame at one end and supported on a drive wheel of the two-wheeled configuration at the other end. The modular vehicle includes a secondary frame detachably connectable to the primary frame defining a three-wheel configuration. A front ground engaging member is supported by the primary frame and a pair of rear ground engaging members are operatively coupled to the secondary frame. The modular vehicle further includes a braking circuit. The circuit includes a front brake unit coupled to a front ground engaging member supported by a primary frame of the modular vehicle. The front brake unit comprises a disc and a three-pot calliper operatively disposed alongside the front ground

engaging member. The braking circuit further includes a rear brake unit operatively coupled to rear ground engaging members supported by the secondary frame removably connectable to the primary frame of the modular vehicle. A first master cylinder is supported on a steering mechanism of the modular vehicle and fluidly coupled to at least one-pot of the three-pot calliper of the front brake unit. The first master cylinder is operable by a brake lever provided on the steering mechanism and actuation of the first master cylinder engages front brake unit to apply brake on the front ground engaging member in the two-wheel configuration. Further, an auxiliary master cylinder is supported by the primary frame and is fluidly connected to remaining pots of the three-pot calliper. A second master cylinder is supported by the secondary frame and is fluidly coupled to the rear brake unit. The auxiliary master cylinder and the second master cylinder is operable by a brake pedal through a lever. Actuation of the auxiliary master cylinder and the second master cylinder engages both front brake unit and the rear brake unit to apply brake on the front ground engaging member and the rear ground engaging members in the three-wheel configuration. The braking circuit according to the present disclosure effectively engages the front and rear brake unit of the three-wheeled vehicle for effective braking. Also, the braking circuit is relatively simple and has less maintenance. The braking circuit of the present disclosure is cost effective and can be readily actuated without any modifications based on operational configuration of the vehicle.
[00011] 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 DRAWINGS
[00012] The invention itself, together with further features and advantages, will
become apparent from consideration of the following detailed description, taken in conjunction with the accompanying drawings. One or more embodiments of the present

disclosure are now described, by way of example only wherein like reference numerals represent like elements and in which:
[00013] FIG. 1 illustrates a perspective view of a modular vehicle in a two-wheeled
configuration, in accordance with an embodiment of the present disclosure;
[00014] FIG.2 illustrates a perspective view of the modular vehicle in a three-
wheeled configuration, in accordance with an embodiment of the present disclosure; and
[00015] FIG.3a illustrates an exemplary perspective view of a brake circuit for the
vehicle in the two-wheeled configuration of FIG. 1.
[00016] FIG.3b illustrates schematic view of the brake circuit for the modular
vehicle in the two-wheel configuration, in accordance with an embodiment of the present disclosure.
[00017] FIG.4a illustrates an exemplary perspective view of the brake circuit for the
modular vehicle in the three-wheel configuration of FIG.2, in accordance with an embodiment of the present disclosure.
[00018] FIG.4b illustrates schematic view of the braking circuit of a modular
vehicle in three-wheel configuration, in accordance with an embodiment of the present disclosure.
[00019] FIG.5 illustrates a top view of the braking circuit used in the modular
vehicle in three-wheel configuration of FIG.4 depicting braking circuit in engaged condition, in accordance with an embodiment of the present disclosure.
[00020] FIG.6 illustrates a perspective view of a portion of the modular vehicle in
three-wheel configuration depicting braking components.
[00021] The drawings referred to in this description are not to be understood as being
drawn to scale except if specifically noted, and such drawings are only exemplary in nature.

DETAILED DESCRIPTION
[00022] While the disclosure is susceptible to various modifications and alternative
forms, an embodiment thereof has been shown by way of example in the drawings and will be described here 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.
[00023] The term "comprises", comprising, or any other variations thereof, are
intended to cover a non-exclusive inclusion, such that a setup, structure, or method that comprises a list of components or steps does not include only those components or steps but may include other components or steps not expressly listed or inherent to such setup or structure or method. 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.
[00024] The following paragraphs describe the present disclosure with reference to
FIG(s) 1 to 6. In the figure, the same element or elements which have similar functions are indicated by the same reference signs. With general reference to the drawings, a modular vehicle in accordance with preferred embodiments of the present invention is illustrated and generally identified with reference numeral M. The modular vehicle (M) may be configured to be selectively operable in at least one of a two-wheeled configuration and a three-wheeled configuration. In the corresponding figures, the two-wheeled vehicle and three-wheeled vehicle configuration is depicted by reference numeral 100a [refer FIG. 1 and FIG. 3 a] and 100b [refer FIG. 2 and 4a] respectively. It will be understood that the teachings of the present disclosure are not limited to any particular vehicle. Also, the corresponding figures illustrate only a schematic of the vehicle. The complete vehicle is not illustrated in the corresponding figures for ease of understanding of the invention.

[00025] While the present disclosure is illustrated in the context of a vehicle, swing
arm 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.
[00026] The following detailed description is merely exemplary in nature and is not
intended to limit application and uses. Furthermore, there is no intention to be bound by any theory presented in the preceding background or summary or the following detailed description. It is to be understood that the disclosure may assume various alternative orientations and step sequences, except where expressly specified to the contrary. It is also to be understood that the specific devices or components illustrated in the attached drawings and described in the following specification are simply exemplary embodiments of the inventive concepts defined in the appended claims. Hence, specific dimensions or other physical characteristics relating to the embodiments that may be disclosed are not to be considered as limiting, unless the claims expressly state otherwise. Hereinafter, preferred embodiments of the present disclosure will be descried referring to the accompanying drawings. While some specific terms of "front / forward", "rear / rearward / back / backward", "up / upper / top", "down / lower / lower ward / downward, bottom", "left / leftward", "right / rightward" and other terms containing these specific terms and directed to a specific direction will be used, the purpose of usage of these terms or words is merely to facilitate understanding of the present invention referring to the drawings. Accordingly, it should be noted that the meanings of these terms or words should not improperly limit the technical scope of the present invention.
[00027] Also, it is to be understood that the phraseology and terminology used
herein is for description and should not be regarded as limiting. Unless specified or limited otherwise, the terms "accommodated," "mounted," "connected," "supported," and "coupled" and variations thereof are used broadly and encompass both direct and indirect mountings, connections, supports, and couplings. Further, "connected" and "coupled" are not restricted to physical or mechanical connections or couplings. It is to

be understood that this disclosure is not limited to the specific devices, methods, applications, conditions, or parameters described and/or shown herein and that the terminology used herein is to describe embodiments by way of example and is not intended to be limiting of the claimed invention. Hereinafter in the following description, various embodiments will be described. For purposes of explanation, specific configurations and details are outlined to provide a thorough understanding of the embodiments. However, it will also be apparent to one skilled in the art that the embodiments may be practiced without the specific details. Furthermore, well-known features may be omitted or simplified in order not to obscure the embodiment being described.
[00028] Referring to Figures 1 and 2, an exemplary modular vehicle (M) according
to embodiments of the present disclosure is disclosed. The modular vehicle (M) [hereinafter, alternatively referred to as "the vehicle (M)"] is a vehicle which can be converted from a first configuration to a second configuration, and vice-versa. The first configuration of the vehicle may be a two-wheeled configuration while the second configuration of the vehicle may be a three-wheeled vehicle configuration or a four-wheeled vehicle configuration. In the illustrated example, the first configuration of the vehicle embodies a two-wheeled vehicle, and the second configuration of the embodies a three-wheeled vehicle. Alternatively, the first configuration of the vehicle may be a three-wheeled vehicle or a four-wheeled vehicle without limiting the scope of the present disclosure. Alternatively, the second configuration of the vehicle may be a two-wheeled vehicle, a four-wheeled vehicle without limiting the scope of the present disclosure. The modular vehicle (M) comprises a vehicle in two-wheeled configuration (100a) and an attachment structure herein referred to as a secondary frame (106) which may be coupled to the vehicle in two-wheeled configuration (100a). In an embodiment of the present disclosure, the vehicle in two-wheeled configuration (100a) is but not limiting to an electric vehicle or IC vehicle. Alternatively, the vehicle in two-wheeled configuration (100a) may embody any other ridden vehicle, such as, electric motorcycle, etc., without limiting the scope of the present disclosure. The modular vehicle (M) can be interchanged

between a two-wheeled configuration (100a) as shown in FIG.l and a three-wheeled configuration (100b) as shown in Figures 3.
[00029] Referring to Figure 1, the modular vehicle (M) in the two-wheeled
configuration (100a) also referred to as a two-wheeled vehicle (100a) hereinafter is illustrated. The two-wheeled vehicle (100a) (hereinafter, interchangeably referred to as "the vehicle (100a)") comprises a front-end structure (122) and a rear end structure (134). The front-end structure (122) comprises a steering mechanism (107), a leg shield [not shown], a front ground engaging member (105), a floorboard (104) also referred to as a footrest region (104) may be used alternatively, a dash assembly [not shown], a head lamp unit [not shown], and a plurality of blinkers [not shown]. The floorboard (104) provides footrest for a rider riding the vehicle (100a). The steering mechanism (107) comprises a handlebar. The handlebar may be configured to be rotated by the rider to steer the two-wheeled vehicle (100a). The steering mechanism (107) comprises a plurality of front forks (111) disposed at the front portion of the vehicle (100). The steering mechanism (107) is operatively coupled to the front ground engaging members (105) via the plurality of front forks (111).
[00030] The vehicle (100a) comprises the primary frame (102). The primary frame
(102) comprises a head tube (112), a down frame (113), a first cross member (114), a left seat rail (115), and a right seat rail (116). The down frame (113) extends in a rearward and downward direction from the head tube (112). The down frame (113) extends between the head tube (112) and the first cross member (114). The steering mechanism (107) is pivotally supported on the primary frame (102). More particularly, the head tube (112) supports the steering mechanism (107). Further, at least portion of the head tube (112) and the down frame (113) is enclosed by at least portion of the leg shield [not shown]. The left seat rail (115) and the right seat rail (116) extend rearward and upward from the first cross member (114). The vehicle may include a passenger's seat [not shown]. The rider's seat and the passenger's seat are disposed on the left seat rail (115) and the right seat rail (116). The rider's seat and the passenger's seat may be formed as a single unit or may be individual members, without limiting the scope of the present disclosure. The vehicle (100a) comprises a control unit (not shown). The control unit may

be configured to control various operations of the two-wheeled vehicle (100a). In an embodiment, the control unit may be configured to control various operations of the modular vehicle (M) in three-wheeled configuration (100b).
[00031] Further referring to FIG.l, the vehicle (100a) comprises the rear end
structure (134). The rear end structure (134) may be disposed at the rear portion of the vehicle (100a). The rear end structure (134) comprises a swing arm member (109), a tail lamp [not shown] and a rear side cover [not shown].
[00032] The rear end structure (134) comprises a rear ground engaging member
(103a), a transmission module, and at least one suspension device (not shown). In the illustrative example, the rear ground engaging member (103a) is disposed below the passenger's seat. In another embodiment, the suspension device may be operatively coupled between the primary frame (102) and the swing arm member (109). Further, the rear ground engaging members (103a) may be provided with the transmission module which drives the rear ground engaging members (103a). The transmission module may be a power generating motor or a belt/chain forming a connection between the engine and the rear ground engaging members (103a).
[00033] The vehicle (100a) comprises electronic connections (not shown) and
hydraulic connections (not shown). The first electronic connections may embody a wire harness. The first hydraulic connections may embody fluid hoses. Further, the vehicle (100a) may further comprise additional components, such as, mirrors, front fenders, etc., without limiting the scope of the present disclosure.
[00034] Referring now to FIG.2, the vehicle in three-wheel configuration (100b)
[referred to as three-wheeled vehicle (100b)] comprises an attachment structure referred to as a secondary frame (106). The secondary frame (106) may be adapted to be detachably coupled to the primary frame (102) of the vehicle (100a) for converting the vehicle (100a) from the two-wheeled configuration (100a) to the three-wheeled configuration (100b). The secondary frame (106) comprises a seat unit [not shown], at least one tail lamp (not shown), a rear side cover (not shown), a left side cover (not

shown), a right cover (not shown) and a second body structure. The rear side cover is disposed on a rear portion of the secondary frame (106) and covers a hind area below the seat unit. In the illustrated embodiment, the tail lamp [not shown] is disposed on the rear side cover. A plurality of turn signal indicators (not shown) may be disposed on either side of the tail lamp. The left side cover and the right-side cover are disposed on both sides of secondary frame (106) and cover lower sides of the seat unit.
[00035] Further, the secondary frame (106) may include a pair of rear ground
engaging members (103b), at least one transmission module, and at least one suspension device (not shown). In the illustrated example, the secondary frame (106) comprises a pair of rear ground engaging members (103b). The pair of rear ground engaging members (103b) are disposed below the seat unit and the secondary frame (106). The secondary frame (106) may have an additional control unit to control various operations. When the secondary frame (106) is coupled to the vehicle in the two-wheeled configuration (100a), the additional control unit is in electronic communication with the control unit of the vehicle (100). The control unit controls the supply of the electric power to various modules of the vehicle from the battery sources. In case of an electric vehicle, the control unit may also control the supply of electric power to the motors driving the wheels.
[00036] The secondary frame (106) may include at least one suspension device. In
the illustrated embodiment, the secondary frame (106) may include two suspension devices. The secondary frame (106) may include a wheel receiving unit [not shown]. The wheel receiving unit is disposed on the secondary frame (106). The wheel receiving unit may be configured to receive the rear ground engaging member (103a) of the two-wheeled vehicle (100a).
[00037] The secondary frame (106) may include a latching mechanism. The latching
mechanism may be configured to detachably couple the primary frame (102) and the secondary frame (106) to selectively convert the modular vehicle (M) from the two-wheeled configuration [as shown in FIG.l] to the three-wheeled configuration (100b) [as shown in FIG.2]. In an embodiment, the latching mechanism may comprise at least one pin disposed on the secondary frame (106) extending transversely, and at least one

corresponding slot provided on the primary frame (102) to detachably couple the primary frame (102) with the secondary frame (106).
[00038] In an example, the secondary frame (106) connected to the primary frame
(102), forms and defines the modular frame of the vehicle (M) having three-wheeled configuration (100b). The secondary frame (106) may further comprise second electronic connections (not shown) and second hydraulic connections (not shown). The second electronic connections may embody a wire harness. The second hydraulic connections may embody fluid hoses. The secondary frame (106) may comprise additional components, such as, rear grip, rear fender, license plate, etc., without limiting the scope of the present disclosure.
[00039] The embodiments described above illustrate the conversion of two-wheeled
vehicle (100a) to the three-wheeled vehicle (100b) for better understanding of the present disclosure. Hereinafter, a retardation or braking circuit is elucidated. In the corresponding figures, only the components necessary for elucidation of the present disclosure may be depicted.
[00040] The modular vehicle (M) described above may require speed deceleration
unit that enable the vehicle to retard or slow down when necessary. As per IS: 14663:2010 and AIS126 regulation, it is mandatory to have a foot pedal operated brakes for three-wheel configuration (100b) and for a two-wheel configuration (100a) it may be either by means of hand lever or foot operated. Hence, in the three-wheeled configuration (100b) the front brakes (i.e., common for two wheeled and three wheeled configuration) and the rear brakes may have to be operated by means of pedal only. This configuration also enables use of both brakes simultaneously, thus enabling combi-braking. Forthcoming embodiments illustrate a braking circuit (B) for speed deceleration in both two wheel and three-wheel configuration (100a and 100b). The braking circuit (B) of the modular vehicle (M) may be hereinafter explained with respect to FIG.3 and 5.
[00041] Referring to FIG. 3a and FIG.3b in conjunction which depicts the modular
vehicle (M) in two-wheel configuration (100a). For the vehicle of two-wheel

configuration (100a) [hereinafter also referred to as vehicle (100a)], the front ground engaging members (105) and the rear ground engaging members (103a) may be provided with a speed deceleration module which may be configured to decelerate the vehicle. The speed deceleration module of the modular vehicle (M) in two-wheel configuration (100a) includes a front brake unit (F) and a rear brake unit (R). A braking circuit (B) for the two-wheel configuration (100a) for operatively connecting the front and the rear brake unit (F and R) is illustrated in FIG.3. The front brake unit (F) may be operatively coupled to the front ground engaging member (105). In an embodiment, the front brake unit (F) may be supported by the primary frame (102). The front brake unit (F) may be disposed on the left side of the vehicle. In some embodiments, the front brake unit (F) may be disposed on the right side of the vehicle without deviating from the scope of the present disclosure. In some embodiments, the front brake unit (F) may be disposed on both right and left side of the vehicle. The front brake unit (F) may be juxtaposed to rim of the front ground engaging member (105) and operatively engaged with the front ground engaging member (105). In an embodiment, the front brake unit (F) may be at least one of a drum type brake device, disc type brake device or any other brake device known in art, without any limitation. In a preferred embodiment, the front brake unit (F) may include a disc (1) and a three-pot caliper (2) operatively disposed along the front ground engaging member (105). The front brake unit (F) further includes a first master cylinder (3) fluidly coupled to at least one pot in the three-pot caliper (2) of the front brake unit (F). The first master cylinder (3) may be fluidly coupled to the at least one pot in the three-pot caliper (2) by a front brake hose (5). In an embodiment, the first master cylinder (3) may be fluidly coupled to a middle port of the three-pot calliper (2). In an embodiment, the first master cylinder (3) may be operable by a brake lever (BL) provided on the steering mechanism (107) [see FIG.3]. Actuation of the first master cylinder (3) by the brake lever (BL) in turn engages front brake unit (F) to apply brake on the front ground engaging member (105) in the two-wheel configuration (100a). In an embodiment, the first master cylinder (3) may also be associated with rear brake unit (R) that may be associated with the rear ground engaging member (103a). Actuating the first master cylinder (3) may simultaneously engage rear brake unit (R) to apply brake on the rear ground engaging member (103a) in two-wheel configuration (100a).

[00042] Further, the rear brake unit (R) of the two-wheeled configuration (100) may
be disposed on at least one of the right side or the left side of the vehicle (100a) or on both sides on rear portion of the vehicle (100a), without any limitations. In an embodiment, the rear brake unit (R) may be at least one of a drum type brake device, disc type brake device or any other brake device known in art, without any limitation. In a preferred embodiment, the rear brake unit (R) may be actuated by the brake lever (7). In another embodiment, the rear brake unit (R) may be operatively associated with the brake lever (BL) and the first master cylinder (3) by a rear brake hose (6). In some embodiments, the front brake unit (F), and the rear brake unit (R) in the two-wheeled vehicle (100b) may be substantially similar. The front and rear brake units (F and R) may be actuated by a brake lever provided on the on the steering mechanism (107). The above-described configuration of the speed deceleration module or braking circuit (B) may be employed in the vehicle of the two-wheel configuration (100a). For the vehicle in the three-wheel configuration (100b), it is necessary to employ effective braking through a brake pedal (P) which may be elucidated henceforth.
[00043] Referring now to FIG(s) 4a, 4b and 5 in conjunction, which illustrate vehicle
in three-wheel configuration (100b) [hereinafter referred to as three-wheeled vehicle (100) or vehicle (100b)]. As illustrated the braking circuit (B) for the modular vehicle (M) of three-wheel configuration (100b) is elucidated. According to present disclosure, it is necessary for the vehicle (100b) in three-wheel configuration to be operated by a brake pedal (P) [refer FIG.4] as described in earlier embodiments. Accordingly, it may be necessary in the three-wheeled vehicle (100b) to operate the front brake unit (F) and the rear brake unit (13) simultaneously. Both the front brake unit (F) and the rear brake unit (13) must be operated by the brake pedal (P) simultaneously for efficient braking of the vehicle (100b). In an embodiment, various linkage mechanisms may be employed for actuating the front and rear brake units (F and 13) without deviating from the scope of the present disclosure. One such linkage mechanism for operating the front and rear brake unit (F and 13) in the three-wheeled vehicle (100b) may be a link (11). The link (11) may be a bell crank lever but not limiting to the same. The brake pedal (P) may be pivotally mounted on the body frame of the vehicle. In an embodiment, the brake pedal (P) may

be pivotally mounted to the secondary frame (106). The brake pedal (P) may be defined with a first end and a second end. The first end may be structure to receive riders' foot and generate a brake operating force. The second end of the brake pedal (P) may be operatively coupled to a shaft fixed to the secondary frame. A transmitting member (L) may be disposed on the second end of the brake pedal (P). The transmitting member (L) may be configured to transmit the brake operating force to the brake unit to decelerate the vehicle. One end of the transmitting member (L) may be connected to the shaft and the end opposite to it may be connected to the link (11) disposed proximal to an auxiliary master cylinder (10) and a second master cylinder (12). In an embodiment, the transmitting member (L) may be at least one of but not limiting to cable or linkage assembly.
[00044] The auxiliary master cylinder (10) may be supported on the primary frame
(102) of the vehicle (100b). The auxiliary master cylinder (10) may be disposed on a floorboard (104) of the primary frame (102) of the vehicle (100b). In an embodiment, a platform may be structured on the floorboard (104) of the primary frame (102). In some embodiments, the platform may be defined close to the down frame (113). The auxiliary master cylinder (10) may be supported by the platform defined on the primary frame (102). The auxiliary master cylinder (10) may be operatively coupled to the front brake unit (F) provided on the front ground engaging member (105). In an embodiment, the auxiliary master cylinder (10) may be fluidly connected to remaining pots of the three-pot caliper (2). The auxiliary master cylinder (10) may be fluidly connected to remaining pots of the three-pot caliper (2) by a front brake hose (8). In an embodiment, the remaining pots of the three-pot caliper (2) may be interconnected to distribute hydraulic or brake fluid. Similarly, the second master cylinder (12) may be disposed on the secondary frame (106) which is connectable to the primary frame (102). In an embodiment, the second master cylinder (12) may be fluidly coupled to the rear brake unit (13) through a rear brake hose (9). The second master cylinder (12) may be secured to a platform defined on the secondary frame (106). The platform on the second frame (106) may be offset by a defined distance from the platform on the primary frame (102). The second master cylinder (12) may be operatively coupled to the rear brake unit (13)

provided alongside at least one of the rear ground engaging member (103b) in the three-wheeled configuration (100b). The functioning of the hydraulic cylinder such as auxiliary master cylinder (10) and the second master cylinder (12) for operating the front and rear brake unit (F and 13) is well known in the art and is not elucidated herein. The auxiliary master cylinder (10) and the second master cylinder (12) may be operated simultaneously by a link (11) which is elucidated further in conjunction with FIG(s) 3, 4 and 6.
[00045] The link (11) [refer FIG.6] may be pivotally disposed on a supporting
bracket that may be defined on the secondary frame (106). In an embodiment, the supporting bracket may be defined at a substantially central portion between the platform on the primary frame (102) and the platform on the secondary frame (106) as shown in FIG.6. The supporting bracket on the secondary frame (106) may be configured to pivotally accommodate the link (11). In an embodiment, the link (11) may be a bell crank lever but not limiting to the same. In another embodiment, the link (11) may be defined with substantially flat surface on either end. The substantially flat surface on either end of the link (11) may be designed to engage with the auxiliary master cylinder (10) and the second master cylinder (12), respectively. Further, one end of the link (11) may be coupled to the transmitting member (L). The transmitting member (L) may form a connection between the link (11) and the brake pedal (P). Operation of the brake pedal (P) between engaged state or released state results in actuation of the transmitting member (L) which may result in the movement of the link (11) to at least one of engaged position or disengaged position. In the engaged position, end faces of the link (11) may engage with the piston and push the piston of the auxiliary master cylinder (10) and the second master cylinder (12) to working condition to engage front and rear brake unit (F and 13) in three-wheel configuration (100b). In the disengaged position, the link (11) may return to normal state, thereby releasing the front brake unit and the rear brake unit (F and 13).
[00046] Further, a resilient member may be disposed between the link (11) and the
supporting bracket. The resilient member may be disposed at a point of pivot of the link (11). In an embodiment, the resilient member may be a torsional spring but not limiting to the same. The resilient member may be configured to displace the link (11) from the

engaged position to the disengaged position, when the brake pedal (P) is released from the engaged condition.
[00047] In operation, when the vehicle is configured to be used as the three-wheeled
vehicle (100b) as shown in FIG(s) 2, 4 and 5, the front brake unit (F) and the rear brake unit (13) may be operated by the brake pedal (P) for deceleration of the three-wheeled vehicle (100b). The driver of the three-wheeled vehicle (100b) may operate the brake pedal (P) to an engaged condition to decelerate the three-wheeled vehicle (100b). Once the brake pedal (P) is operated to the engaged condition, the brake operating force on the brake pedal (P) may be transmitted to the link (11) through the transmitting member (1). The transmitting member (L) may be configured to actuate the link (11) to swivel [as shown by arrows in FIG.3] about the point of pivot. When the link (11) swivels about the point of pivot, the faces of the link (11) on either end form a contact with the auxiliary master cylinder (10) and the second master cylinder (12). That is the link (11) swivels to the engaged position in which the end faces of the link (11) may engage with the piston of the auxiliary master cylinder (10) and the second master cylinder (12). The link (11) drives the piston to working position to actuate the front and rear brake unit (F and 13). In the engaged position, the link (11) may be configured to actuate the auxiliary master cylinder (10) and the second master cylinder (12) to apply brake on the front ground engaging member (105) and the rear ground engaging member (103b) concurrently. For example, in case the transmitting member (L) is a cable, when the brake pedal (P) is operated to engaged condition, the brake pedal (P) draws the cable which in turn actuates the link (11) to swivel about the point of pivot. Similarly, when the brake pedal (P) is released, the link (11) returns to the disengaged position. The resilient member disposed between the supporting bracket and the link (11) aids in the link (11) to return back to the disengaged position which releases the force of front and rear brake unit (F and 13).
[00048] In an embodiment, the braking circuit (B) according to the present
disclosure effectively engages the front and rear brake unit (F and 13) of the three-wheeled vehicle (100b) for effective braking. Also, the braking circuit (B) is relatively simple and has less maintenance. The braking circuit (B) of the present disclosure is cost

effective and can be readily actuated without any modifications based on operational configuration of the vehicle.
[00049] It is to be understood that a person of ordinary skill in the art may develop
a circuit of similar configuration without deviating from the scope of the present disclosure. Such modifications and variations may be made without departing from the scope of the present invention. Therefore, it is intended that the present disclosure covers such modifications and variations provided they come within the ambit of the appended claims and their equivalents.
[00050] Equivalents:
[00051] With respect to the use of substantially any plural and/or singular terms
herein, those having skill in the art can translate from the plural to the singular and/or from the singular to the plural as is appropriate to the context and/or application. The various singular/plural permutations may be expressly set forth herein for sake of clarity.
[00052] It will be understood by those within the art that, in general, terms used
herein, and especially in the appended claims (e.g., bodies of the appended claims) are generally intended as "open" terms (e.g., the term "including" should be interpreted as "including but not limited to," the term "having" should be interpreted as "having at least," the term "includes" should be interpreted as "includes but is not limited to," etc.). It will be further understood by those within the art that if a specific number of an introduced claim recitation is intended, such an intent will be explicitly recited in the claim, and in the absence of such recitation no such intent is present. For example, as an aid to understanding, the following appended claims may contain usage of the introductory phrases "at least one" and "one or more" to introduce claim recitations. However, the use of such phrases should not be construed to imply that the introduction of a claim recitation by the indefinite articles "a" or "an" limits any particular claim containing such introduced claim recitation to inventions containing only one such recitation, even when the same claim includes the introductory phrases "one or more" or "at least one" and indefinite articles such as "a" or "an" (e.g., "a" and/or "an" should

typically be interpreted to mean "at least one" or "one or more"); the same holds true for the use of definite articles used to introduce claim recitations. In addition, even if a specific number of an introduced claim recitation is explicitly recited, those skilled in the art will recognize that such recitation should typically be interpreted to mean at least the recited number (e.g., the bare recitation of "two recitations," without other modifiers, typically means at least two recitations, or two or more recitations). Furthermore, in those instances where a convention analogous to "at least one of A, B, and C, etc." is used, in general such a construction is intended in the sense one having skill in the art would understand the convention (e.g., "a system having at least one of A, B, and C" would include but not be limited to systems that have A alone, B alone, C alone, A and B together, A and C together, B and C together, and/or A, B, and C together, etc.). In those instances, where a convention analogous to "at least one of A, B, or C, etc." is used, in general such a construction is intended in the sense one having skill in the art would understand the convention (e.g., "a system having at least one of A, B, or C" would include but not be limited to systems that have A alone, B alone, C alone, A and B together, A and C together, B and C together, and/or A, B, and C together, etc.). It will be further understood by those within the art that virtually any disjunctive word and/or phrase presenting two or more alternative terms, whether in the description, claims, or drawings, should be understood to contemplate the possibilities of including one of the terms, either of the terms, or both terms. For example, the phrase "A or B" will be understood to include the possibilities of "A" or "B" or "A and B." While various aspects and embodiments have been disclosed herein, other aspects and embodiments will be apparent to those skilled in the art. The various aspects and embodiments disclosed herein are for purposes of illustration and are not intended to be limiting, with the true scope being indicated by the following claims.

We Claim:

1. A braking circuit (B) of a modular vehicle (M) configured to be selectively operable
in at least one of a two-wheel configuration (100a) and a three-wheel configuration (100b),
the braking circuit (B) comprising:
a front brake unit (F) coupled to a front ground engaging member (105) supported by a primary frame (102) of the modular vehicle (M), the front brake unit (F) comprising a disc (1) and a three-pot calliper (2) operatively disposed alongside the front ground engaging member (105);
a rear brake unit (13) operatively coupled to at least one rear ground engaging members (103b) supported by a secondary frame (106), the secondary frame (106) removably connectable to the primary frame (102) of the modular vehicle (M);
a first master cylinder (3) supported on a steering mechanism (107) of the modular vehicle (M) and fluidly coupled to at least one pot of the three-pot calliper (2) of the front brake unit (F), wherein the first master cylinder (3) operable by a brake lever provided on the steering mechanism (107) and actuation of the first master cylinder (3) engages front brake unit (F) to apply brake on the front ground engaging member (105) in the two-wheel configuration (100a);
an auxiliary master cylinder (10) supported by the primary frame (102) and fluidly connecting remaining pots of the three-pot calliper (2); and
a second master cylinder (12) supported by the secondary frame (106) and fluidly coupled to the rear brake unit (13),
wherein the auxiliary master cylinder (10) and the second master cylinder (12) operable by a brake pedal (P) through a link (11) and actuation of the auxiliary master cylinder (10) and the second master cylinder (12) engages both front brake unit (F) and the rear brake unit (13) to apply brake on the front ground engaging member (105) and the rear ground engaging members (103a and 103b) in the three-wheel configuration.
2. The braking circuit (B) as claimed in claim 1, wherein the link (11) is a bell crank
lever.

3. The braking circuit (B) as claimed in claim 1, wherein the brake pedal (P) is operatively coupled to the link (11) through a transmitting member (L), wherein operation of the brake pedal (P) to an engaged condition results in actuation of the transmitting member- (L) resulting in movement of the link (11) to an engaged position for operating the auxiliary master cylinder (10) and the second master cylinder (12).
4. The braking circuit (B) as claimed in claim 1, wherein the first master cylinder (3) is fluidly coupled to middle pot of the three-pot calliper (2).

6. The braking circuit (B) as claimed in claim 1, wherein the auxiliary master cylinder (10) is fluidly coupled to outer two pots of the three-pot calliper (2).
7. The braking circuit (B) as claimed in claim 1, wherein the auxiliary master cylinder (10) is operatively coupled to the three-pot calliper (2) of the front brake unit (F) by a brake hose (8) and is structured to operate the front brake unit (F) when the modular vehicle (M) is operated in three-wheel configuration (100b).
8. The braking circuit (B) as claimed in claim 1, wherein the remaining pots of the
three-pot calliper (2) are fluidly interconnected to distribute hydraulic fluid.
9. The braking circuit (B) as claimed in claim 1, wherein the second master cylinder (12) is operatively coupled to the rear brake unit (13) through a rear brake hose (9).
10. A modular vehicle (M) configured to be selectively operable in at least one of a two-wheel configuration (100a) and a three-wheel configuration (100b), the modular vehicle (M) comprising:
a primary frame (102) defining the two-wheel configuration (100a);
a swing arm member (109) pivotally coupled with the primary frame (102) at one end and supported on a drive wheel of the two-wheeled configuration (100a) at the other end;
a secondary frame (106) detachably connectable to the primary frame (102) defining the three-wheel configuration;

a front ground engaging member (105) supported by the primary frame
(102);
a pair of rear ground engaging members (103b) operatively coupled to the
secondary frame (106);
a braking circuit (B) comprising:
a front brake unit (F) coupled to a front ground engaging member (105) supported by a primary frame (102) of the modular vehicle (M), the front brake unit (F) comprising a disc (1) and a three-pot calliper (2) operatively disposed alongside the front ground engaging member (105); a rear brake unit (13) operatively coupled to at least one of the pair of rear ground engaging members (103a and 103b) supported by a secondary frame (106), the secondary frame (106) removably connectable to the primary frame (102) of the modular vehicle (M);
a first master cylinder (3) supported on a steering mechanism (107) of the modular vehicle (M) and fluidly coupled to at least one pot of the three-pot calliper (2) of the front brake unit (F), wherein the first master cylinder (3) is operable by a brake lever provided on the steering mechanism (107) and actuation of the first master cylinder (3) engages front brake unit (F) to apply brake on the front ground engaging member (105) in the two-wheel configuration (100a);
an auxiliary master cylinder (10) supported by the primary frame (102) and is fluidly connecting remaining pots of the three-pot calliper (2); and
a second master cylinder (12) supported by the secondary frame (106) and is fluidly coupled to the rear brake unit (13), wherein the auxiliary master cylinder (10) and the second master cylinder (12) is operable by a brake pedal (P) through a link (11) and actuation of the auxiliary master cylinder (10) and the second master cylinder (12) engages both front brake unit (F) and the rear brake unit (13) to apply brake on the front ground engaging member (105) and the pair of rear ground engaging members (103a and 103b) in the three-wheel configuration (100b).

11. The modular vehicle (M) as claimed in claim 10, wherein the link (11) is a bell crank lever.
12. The modular vehicle (M) as claimed in claim 10, wherein the brake pedal (P) is coupled to the link (11) through a transmitting member (L), wherein operation of the brake pedal (P) to an engaged condition results in actuation of the transmitting member (L) resulting in movement of the link (11) to an engaged position for operating the auxiliary master cylinder (10) and the second master cylinder (12).
13. The modular vehicle (M) as claimed in claim 10, wherein the first master cylinder (3) is fluidly coupled to a middle pot of the three-pot calliper (2) of the front brake unit (F) by a front brake hose (5).
14. The modular vehicle (M) as claimed in claim 10, wherein the auxiliary master cylinder (10) is operatively coupled to outer-two pot of the three-pot calliper (2) of the front brake unit (F) by a brake hose (8) and is structured to operate the front brake unit (F) when the modular vehicle (M) is operated in three-wheel configuration (100b).