A TWO-WHEELED VEHICLE

FIELD OF THE INVENTION

[001] The present invention relates to a two-wheeled vehicle. More particularly, the present invention relates to mounting of a pressure control unit of a braking assembly on the two-wheeled vehicle. BACKGROUND OF THE INVENTION

[002] Conventional braking systems in two-wheeled vehicles involves independent actuation of a front wheel brake and a rear wheel brake. While a front brake actuating means for the front wheel brake is typically provided on a handlebar of the two-wheeled vehicle, a rear brake actuating means for the rear wheel brake is typically provided either on the handlebar or in the form of a foot pedal on a vehicle frame. However, the conventional braking systems typically involves certain risks associated with the safety of the two-wheeled vehicle. For example, if only the front wheel brake is applied, the rear wheel tends to lift off and the vehicle faces the risk of being toppled. The front wheel may also face the risk of skidding. On the other hand, if only the rear wheel brake is applied, the front wheel keeps rolling and the vehicle faces the risk of skidding or that of longer braking distance. [003] In order to overcome the drawbacks associated with the conventional braking systems, conventional braking systems in two-wheeled vehicles are being replaced with contemporary braking systems, where a braking force is distributed between the front wheel brake and the rear wheel brake. In the contemporary braking systems, actuation of a rear brake pedal causes the actuation of the front brake in addition to actuation of the rear brake. Actuation of a front brake lever cause the actuation of the front brake only or actuation of the rear brake also. The contemporary braking system comprises a pressure control unit that controls a brake fluid pressure and a brake system such as a disc brake system, which includes master cylinders, connecting hoses and calipers for the front wheel and the rear wheel. In one non-limiting example, the pressure control unit distributes the braking force between the front wheel brake and the rear wheel brake, on actuation of either the front brake actuating means (e.g. a brake lever) or the rear brake actuating means (e.g. a brake pedal), based on different vehicle parameters. Presence of the contemporary braking systems in the two-wheeled vehicle thus aids in the balanced actuation of the front wheel brake and the rear wheel brake, thereby ensuring safety of the two-wheeled vehicle.

[004] Various locations have been disclosed in the prior art with respect to mounting of the pressure control unit in the two-wheeled vehicle. However, such pressure control units are located away from center of gravity of the vehicle. In motorcycles, the center of gravity (CG) lies below a seat of the rider. Location of the pressure control unit away from the center of gravity would result in unstable riding conditions. Similarly, pressure control unit should not be arranged at locations which are difficult to access. For example, locating the pressure control unit on an upper side of a seat stay and supported on the seat stay side increases the assembling time, servicing costs as well as requires complicated hose routing between the front brake device and the rear brake device which is undesirable. Also, the pressure control unit have been known to be located within the seat cowl and supported by a portion of the vehicle frame. However, such location is very close to a tyre and increases the chances of dust accumulation in the pressure control unit which is undesirable. Also, in all the above-mentioned locations, the hose lengths connecting the pressure control unit to a front brake device and a rear brake device are not uniform and, therefore, good brake feel cannot be achieved.

[005] Further, as a result of the enhanced safety associated with contemporary braking systems, governments of many countries are mandating the use of any one of the contemporary braking systems such as anti-lock braking system (ABS), combined braking system (CBS) and the likes which are linked braking systems in two-wheeled vehicles. Therefore, it is required from manufacturers to fit existing two-wheeled vehicles which have been manufactured without any one of the contemporary braking systems, with any one of the contemporary braking systems. There is, therefore, a need to ensure retrofitability of parts of the above-mentioned contemporary braking systems, so that they may be easily installed in existing vehicles without involving substantial changes to the existing vehicles, including to the frame structure of the two-wheeled vehicle.

[006] Further, the pressure control unit in the prior arts are arranged on the vehicle using a bracket which is permanently welded to the frame of the vehicle. Thus, since a permanent bracket which has been welded to the frame is used for securing the pressure control unit, retrofitting of said pressure control unit to other vehicle frames deficient of said bracket becomes difficult. Further, use of the permanent bracket would also restrict the flexibility that would be available in terms of accommodating the pressure control unit of a different braking system, for example pressure control unit of a combined braking system in a two-wheeled vehicle which was previously installed with a pressure control unit such as hydraulic pressure control unit of an anti-lock braking system.

[007] In view of the foregoing, it is desirable to overcome the disadvantages mentioned in the prior art with respect to mounting of the pressure control unit on the two-wheeled vehicle.

SUMMARY OF THE INVENTION

[008] In one aspect of the invention, a two-wheeled vehicle with a brake assembly having a pressure control unit is disclosed. The two-wheeled vehicle comprises a head pipe and a main tube extending rearwardly from the main pipe. The main tube comprises a first section and a second section. The first section extends rearwardly from the head pipe. The second section extends rearwardly and downwardly from the first section. The brake assembly includes a pressure control unit capable of controlling a pressure for braking operation between a front wheel and a rear wheel of the vehicle wherein the pressure control unit is mounted on the second section of the main tube.

[009] In an embodiment, the second section includes at least a first subsection and a second sub-section. The first sub-section is provided between the first section and the second sub-section. The first sub-section has a first end and a second end wherein the first end is connected to the first section and the second end is connected to the second sub-section. It is to be understood that the first section and the second section can be formed integrally or separately. Similarly, the first sub-section and the second subsection of the second section can be formed integrally or separately.

[010] In an embodiment, the first sub-section is an oblique section.

[011] In an embodiment, the pressure control unit is mounted on the first sub-section of the second section.

[012] In an embodiment, the pressure control unit is mounted on the second sub-section adjacent to the second end of the first sub-section. [013] In an embodiment, the pressure control unit is mounted on the second section of the main tube in a region between a fuel tank and a transmission assembly in a vehicle upward -downward direction and between a power generating unit and an air cleaner in a vehicle front-rear direction.

[014] In an embodiment, the two-wheeled vehicle includes a mounting assembly having a mounting unit and a clamping unit for mounting the pressure control unit on the second section of the main tube. The mounting unit includes a horizontal member, a first vertical member, a second vertical member and a seating member. The horizontal member extends between a first end and a second end in a vehicle front-rear direction. The first vertical member extends from the first end of the horizontal member in a vehicle upward direction. The second vertical member extends from the second end of the horizontal member in a vehicle downward direction. The seating member is provided on the second vertical member. The seating member has a recessed portion capable of being arranged on an outer surface of the second section of the main tube. The recessed portion of the seating member may be provided with a resilient elastic member. The resilient elastic member may be fixedly or detachably attached to the recessed portion. The presence of the resilient elastic member aids in ensuring that the recessed portion of the seating member is firmly arranged on the second section of the main tube without involving any damage to the second section of the main tube. The clamping unit includes a curved member extending between a first clamping member and a second clamping member. The curved member of the clamping unit is also adapted to be arranged on the outer surface of the second section. The inner surface of the curved member which faces the outer surface of the second section may be provided with a resilient elastic member. The resilient elastic member may be fixedly or detachably attached to the curved member. The presence of the resilient elastic member aids in ensuring that the inner surface of the curved member is firmly arranged on the second section of the main tube without involving any damage to the second section of the main tube. The first vertical member of the mounting unit is configured to receive the pressure control unit. The second vertical member of the mounting unit is configured to receive the first clamping member and the second clamping member of the clamping unit. The first vertical member has one or more mounting holes which correspond with one or more mounting holes provided on the pressure control unit. The second vertical member of the mounting unit has one or more mounting holes which correspond with one or more mounting holes provided on the first clamping member and the second clamping member of the clamping unit. During assembly, the one or more mounting holes of the first vertical member are aligned with one or more mounting holes provided on the pressure control unit and fastened with one or more fasteners such as bolts, nuts, screws, washers, studs and the likes known to person skilled in the art. Further, the one or more mounting holes provided on the second vertical member are aligned with the one or more mounting holes provided on the first clamping member and the second clamping member and fastened with one or more fasteners such as bolts, nuts, screws, washers, studs and the likes known to person skilled in the art.

[015] In an embodiment, the mounting unit comprises a first member and a second member. The first member extends between a first end and a second end in a vehicle width direction. The second member extends from either the first end or the second end of the first member in a vehicle rear direction. The clamping unit is a bracket disposed on the second section of the main tube and configured to receive the second member of the mounting unit. The first member of the mounting unit is configured to receive the pressure control unit. Each of the first member and the second member of the mounting unit has one or more mounting holes. The bracket also has one or more mounting holes. During assembly, the one or mounting holes on the first member are aligned with one or more mounting holes provided on the pressure control unit and fastened with one or more fasteners such as bolts, nuts, screws, washers, studs and the likes known to person skilled in the art. Also, the one or more mounting holes provided on the bracket are aligned with one or more mounting holes provided on the second member of the mounting unit and fastened with one or more fasteners such as bolts, nuts, screws, washers, studs and the likes known to person skilled in the art. [016] In an embodiment, the pressure control unit is a hydraulic pressure modulator for preventing at least one of the front wheel and the rear wheel from locking.

[017] In an embodiment, the pressure control unit is a hydraulic pressure control valve for distributing hydraulic pressure between the front wheel and the rear wheel.

BRIEF DESCRIPTION OF THE DRAWINGS

[018] Reference will be made to embodiments of the invention, examples of which may be illustrated in accompanying figures. These figures are intended to be illustrative, not limiting. Although the invention is generally described in context of these embodiments, it should be understood that it is not intended to limit the scope of the invention to these particular embodiments.

Figure 1 illustrates a schematic view of a two-wheeled vehicle, in accordance with an embodiment of the present invention.

Figure 2 illustrates a perspective view of the frame structure of the twowheeled vehicle depicting arrangement of the braking system in accordance with an embodiment of the present invention.

Figure 3 illustrates an enlarged view of a portion of the braking system as secured to a portion of the frame structure in accordance with an embodiment of the present invention. Figure 4 and Figure 5 illustrate a perspective view of a main tube of the two-wheeled vehicle and a pressure control unit being arranged on the main tube with the aid of a mounting assembly in accordance with an embodiment of the present invention.

Figure 6 and Figure 7 illustrate a detailed view of the mounting unit capable of being arranged on the second section of the main tube in accordance with an embodiment of the present invention.

Figure 8 and Figure 9 illustrate the pressure control unit being assembled on the mounting unit, in accordance with an embodiment of the present invention.

Figure 10 illustrates an exploded view of the mounting assembly having a mounting unit and a clamping unit capable of being arranged on the second section of the main tube in accordance with an embodiment of the present invention.

Figure 11 illustrates an exploded view of a mounting unit and a clamping unit/bracket in accordance with an alternative embodiment of the present invention.

DETAILED DESCRIPTION OF THE INVENTION

[019] Various features and embodiments of the present invention here will be discernible from the following further description thereof, set out hereunder. [020] Figure 1 illustrates a schematic view of a two-wheeled vehicle 10, in accordance with an embodiment of the present invention. The two-wheeled vehicle 10 includes a frame structure 1 1 (shown in Figure 2) to support different parts of the vehicle 10. A head tube 12 is provided at a front end of said frame structure 11. The head tube 12 supports a steering shaft (not shown) rotatably in a certain range. In an upper portion of the head tube 12, a handlebar 20 is rotatably connected to the steering shaft. The handlebar 20 is used to steer the vehicle 10 and is connected to a front wheel 21 through a front fork assembly 23. The front fork assembly 23 in turn is connected to the handlebar 20 by means of a pair of upper and lower brackets (not shown). The front fork assembly 23 is further supported partially on a front fender 22 and is connected to the front wheel 21 . An upper portion of the front wheel 21 is covered by the front fender 22 which prevents mud and water from getting deflected towards an upper portion of the front fork assembly 23.

[021] In a front portion of the frame structure 1 1 (shown in Figure 2) a fuel tank 24 is arranged immediately behind the handlebar 20 and is disposed over a main tube 13 of said frame structure 11 (shown in Figure 2) and above a power generating unit 25. In an embodiment where a fuel pump is provided, the fuel tank 24 constituting a part of a fuel supply system supplies fuel to the power generating unit 25 through the fuel pump (not shown) which also forms a part of said supply system. In another embodiment where the fuel pump is absent, the fuel tank 24 supplies fuel to the power generating unit 25 through a carburettor (not shown). A seat 30 is placed behind the fuel tank 24. The seat 30 includes a front rider portion and rear pillion portion. In an embodiment, the front rider portion and the rear pillion portion are provided as separate seat portions. In an embodiment, the front rider portion and the rear pillion portion are provided as a single seat portion.

[022] For safety of the rider and in conformance with the traffic rules, a headlamp unit 31 and a turn signal lamp unit 32 are provided in a front portion of the vehicle 10. The headlamp unit 31 and the turn signal lamp unit 32 are housed in a headlamp housing assembly 33.

[023] The safety of said two-wheeled vehicle 10 is also improved by providing a braking system, for example a linked type braking system which controls braking operation of a front brake device 41 and a rear brake device 42 of the front wheel 21 and a rear wheel 35 respectively. The braking system includes a pressure control unit 43 and aids in ensuring that there is appropriate distribution of braking force upon actuation of at least one of a front brake actuating means 45 (shown in Figure 2) or a rear brake actuating means 46 (shown in Figure 2) between the front brake device 41 and the rear brake device 42, and thereby protects the vehicle 10 from the risk of being toppled or from the risk of skidding.

[024] As illustrated, the pressure control unit 43 is arranged on the main tube 13. More specifically, the pressure control unit 43 is arranged on the main tube 13 in a region between the fuel tank 24 and a transmission assembly 26 in a vehicle upward-downward direction and between the power generating unit 25 and an air cleaner 36 in a vehicle front-rear direction. In other words, the pressure control unit 43 is arranged on the main tube 13 in a region behind the power generating unit 25, below the fuel tank 24, in front of the air cleaner 36 secured to a pair of rear tubes 14 extending rearwardly from the main tube 13, and above a portion of the transmission assembly 26 of the vehicle 10. Thus, the pressure control unit 43 is located at a substantial mid portion of the vehicle 10 with a centre of gravity of the vehicle 10 being located in proximity of said pressure control unit 43 which thereby results in stable riding conditions.

[025] Further, suspension systems are provided for comfortable steering of said vehicle 10 on road. The front fork assembly 23, which forms the front suspension system, serves as rigidity component just like the frame structure 1 1 . The front fork assembly 23 clamped to the head tube 12 through an upper bracket (not shown) and a lower bracket (not shown) is capable of being moved in the left and right direction of the vehicle 10. Further, a rear suspension system 37, which may be a hydraulic damped arrangement, is connected to the frame structure 1 1 at a rear portion thereof. Particularly, at the rear portion of the frame structure 11 , the rear wheel 35 is suspended by the rear suspension system 37.

[026] The power generating unit 25 is mounted to a front lower portion of the frame structure 11 (Shown in Figure 2) by means of a front power generating unit mounting bracket (not shown) and disposed below a portion of the main tube 13. The power generating unit 25 is equipped with an exhaust system that includes an exhaust pipe (not shown) connected to the power generating unit 25 and a muffler (not shown) connected to the exhaust pipe. The muffler (not shown) extends rearwards along the rear wheel 35.

[027] Power from the power generating unit 25 is transmitted to the rear wheel 35 through the transmission assembly 26, so as to drive and rotate the rear wheel 35. The transmission assembly 26 includes a gearbox containing gear train and a drive mechanism connecting the gearbox to the rear wheel 35. Particularly, the gear train includes a gear shift shaft, and a plurality of gears, each having a varying gear ratio. Particularly, speed change is achieved by operation of a gear shift linkage assembly which is operatively connected to the gear shift shaft (not shown) of the transmission assembly 26.

[028] Thus, power from the power generating unit 25 is transmitted to the rear wheel 35 rotatably supported at a rear end of a swing arm 47. A rear fender 48 for covering an upper side of the rear wheel 35 is mounted to the rear portion of the frame structure 11 to prevent mud and water splashed by the rotating rear wheel 35 from entering the muffler, the power generating unit 25 and other parts disposed close to the rear wheel 35. To enhance the overall aesthetics of the vehicle 10 and to prevent undesired foreign particles from entering parts of the vehicle 10, a plurality of rear covers 49 are attached to the rear portion of the frame structure 11 .

[029] Figure 2 illustrates a perspective view of the frame structure 11 of the two-wheeled vehicle 10 depicting arrangement of the braking system in accordance with an embodiment of the present invention. Figure 3 illustrates an enlarged view of a portion of the braking system as secured to a portion of the frame structure 11 in accordance with an embodiment of the present invention.

[030] As shown, a portion of the main tube 13 extends rearwardly from the head tube 12 and further extends downwardly towards a power generating unit mounting bracket 56. The main tube 13 supports the pressure control unit 43 which is operatively connected to a front brake line 41 b extending towards a front caliper 41 a of the front brake device 41 and to a rear brake line 42b extending towards a rear brake caliper 42a of the rear brake device 42. In an embodiment, a portion of the main tube 13 supports the front brake line 41 b.

[031] The pressure control unit 43 controls pressure corresponding to driving conditions for braking operation of the front brake device 41 and the rear brake device 42. In an embodiment, the pressure control unit 43 is a hydraulic pressure modulator unit which prevents wheels from skidding. In an embodiment, the pressure control unit 43 is a hydraulic pressure control valve which enables pressure distribution between the front wheel 21 and the rear wheel 35. In an embodiment, the pressure control unit 43 is a pneumatic pressure control unit. In an embodiment, the pressure control unit may be used in anti-lock braking system (ABS) application. In an embodiment, the pressure control unit may be used in combi-brake system (CBS) application.

[032] Figure 4 and Figure 5 illustrate a perspective view of a main tube 13 of the two-wheeled vehicle 10 and a pressure control unit 43 being arranged on the main tube 13 with the aid of a mounting assembly in accordance with an embodiment of the present invention.

[033] As already stated in preceding paragraphs, the main tube 13 extends rearwardly from the head pipe 12. As shown, the main tube 13 has a first section 13a which extends rearwardly from the head pipe 12 and a second section 13b which extends rearwardly and downwardly from the first section 13a. The pressure control unit 43 of the braking assembly is mounted on the second section of the main tube 13.

[034] In an embodiment, the second section 13b is further divided into at least a first sub-section 13b1 and a second sub-section 13b2. The first subsection 13b1 is provided between the first section 13a and the second-sub- section 13b1. It is to be understood that the first section 13a, the first subsection 13b1 and the second sub-section 13b2 can be formed integrally or separately. The first sub-section 13b1 extends between a first end 50 and a second end 52 wherein the first end 50 is connected to the first section 13a and the second end 52 is connected to the second sub-section 13b2. In an embodiment, the pressure control unit 43 is mounted on the first sub-section 13b1 . In an embodiment, the pressure control unit 43 is mounted on the second sub-section 13b2. In an embodiment, the pressure control 43 unit is mounted on the second sub-section 13b2 adjacent the second end 52 of the first sub-section 13b1. In an embodiment, the first sub-section 13b1 is an oblique section.

[035] Also, as illustrated, the pressure control unit 43 is detachably attached to the main tube 13 with a mounting assembly having a mounting unit 100 and a clamping unit 200, which shall be discussed in detail in the subsequent paragraphs.

[036] Figure 6 and Figure 7 illustrate a detailed view of the mounting unit 100 capable of being arranged on the second section 13b of the main tube 13 in accordance with an embodiment of the present invention.

[037] As shown, the mounting assembly comprises a mounting unit 100 capable of being arranged on the second section 13b of the main tube 13. In an embodiment, the mounting unit 100 is arranged on the first sub-section 13b1 of the second section 13b of the main tube 13. In an embodiment, the mounting unit 100 is arranged on the second sub-section 13b2 of the second section 13b of the main tube 13. In an embodiment, the mounting unit 100 is arranged on the second sub-section 13b2 adjacent the second end 52 of the first sub-section 13b1 . [038] The mounting unit 100 comprises a horizontal member 104, a first vertical member 102, a second vertical member 106 and a seating member 108. The horizontal member 104 extends between a first end and a second end in the vehicle front-rear direction. The first vertical member 102 extends from the first end of the horizontal member 104 in the vehicle upward direction and the second vertical member 106 extends from the second end of the first horizontal member 104 in the vehicle downward direction. The seating member 108 is provided on the second vertical member 106. The seating member 106 has a recessed portion 108a facing an outer surface 54 of the second section 13b of the main tube 13 and capable of being arranged on the outer surface 54 of the main tube 13. The recessed portion 108a has dimensions which correspond with dimensions of the outer surface 54 of the second section 13b of the main tube 13 such that the recessed portion 108a receives a portion of the outer surface 54 of the second section 13b of the main tube 13. In an embodiment, an elastic resilient member 108b is provided in the recessed portion (shown in Figure 10). The elastic resilient member 108b may be fixedly/detachably attached to the recessed portion 108a. The presence of the resilient elastic member 108b between the outer surface 54 and the recessed portion 108a aids in ensuring that the recessed portion 108a of the seating member 108 is firmly arranged on the outer surface 54 of the second section 13b of the main tube 13 without involving any damage to the second section 13b of the main tube 13. The first vertical member 102 is adapted to receive the pressure control unit. In an embodiment, the first vertical member 102 has one or more mounting holes M1 and the pressure control unit 43 also has one or more mounting holes M2 (shown in Figure 8). During assembly, the one or more mounting holes M1 on the first vertical member 102 are aligned with the one or more mounting holes M2 on the pressure control unit 43 and fastened with one or more fasteners F such as bolts, nuts, screws, washers, studs and the likes known to person skilled in the art. The second vertical member 106 is adapted to receive the clamping unit 100 as discussed in Figure 10. In an embodiment, the second vertical member has one or more mounting holes M3.

[039] Figure 8 and Figure 9 illustrate the pressure control unit 43 being assembled on the mounting unit 100, in accordance with an embodiment of the present invention.

[040] As shown in Figure 8, the first vertical member 102 of the mounting unit 100 has one or more mounting holes M1 and the pressure control unit has one or more mounting holes M2. The one or more mounting holes M1 of the first vertical member correspond with one or more mounting holes M2 of the pressure control unit 43. During assembly, the one or more mounting holes M1 of the first vertical member 102 are aligned with the one or more mounting holes of the pressure control unit 43 and fastened with one or more fasteners F such as bolts, nuts, screws, washers, studs and the likes known to person skilled in the art. Figure 9 illustrates the mounting unit 100 and the pressure control unit 43 in an assembled state.

[041] Figure 10 illustrates an exploded view of the mounting assembly having a mounting unit 100 and a clamping unit 200 capable of being arranged on the second section of the main tube 13 in accordance with an embodiment of the present invention.

[042] The mounting unit 100 has the same construction as discussed in Figure 6 and Figure 7. As shown, the mounting unit 100 is arranged on the second sub-section 13b2 of the main tube 13b. However, this illustration should not be construed as limiting and the mounting unit 100 can be arranged on first sub-section 13b1 of the second section 13b of the main tube 13. Further, as shown, a resilient elastic member 108b may be fixedly or detachably attached to the recessed portion 108a of the seating member 108. The presence of the resilient elastic member 108b between the outer surface 54 and the recessed portion 108a aids in ensuring that the recessed portion 108a of the seating member 108 is firmly arranged on the outer surface 54 of the second section 13b of the main tube 13 without involving any damage to the second section 13b of the main tube 13. Further, a clamping unit 200 is also shown which comprises a curved member 202 extending between a first clamping member 204 and a second clamping member 206. The curved member 202 of the clamping unit 200 has an inner surface 202b and an outer surface 202c. The inner surface 202b of the curved member 200 is adapted to be arranged on the outer surface 54 of the second section 13b of the main tube 13. A resilient elastic member 202a may be fixedly/detachably attached to the inner surface 202b of the curved member 202. The presence of the resilient elastic member 202a between the outer surface 54 of the second section 13b and the inner surface 202b of the curved surface 202 aids in ensuring that the curved member 202 is firmly arranged on the outer surface 54 of the second section 13b of the main tube 13 without involving any damage to the second section 13b of the main tube 13. The dimensions of the inner surface 202b of the curved member 202 correspond with the dimensions of the outer surface 54 of the second section 13b of the main tube 13 such that the inner surface 202b of the curved member 202 receives a portion of the outer surface 54 of the second section 13b of the main tube 13. Each of the first clamping member 204 and the second clamping 206 member has one or more mounting holes.

[043] During assembly, the recessed portion 108a of the seating member 108 and the inner surface 202b of the curved member 202 are arranged on the outer surface 54 of the second section 13b of the main tube 13 and the mounting holes M4 on the first and second clamping members 204, 206 and the mounting holes M3 on the second vertical member 106 are aligned and fastened with one or more fasteners F such as bolts, nuts, screws, washers, studs and the likes known to person skilled in the art. [044] Figure 11 illustrates an exploded view of a mounting unit 300 and a clamping unit/bracket 400 in accordance with an alternative embodiment of the present invention.

[045] As shown, the mounting unit 300 comprises a first member 302 and a second member 304. The first member 302 extends between a first end and a second end in the vehicle width direction. The second member 304 extends from one of the first end or the second end of the first member 302 in the vehicle rear direction. The clamping unit 400 comprises a bracket which is disposed on the second section 13b of the main tube. In an embodiment, the bracket is disposed on the first sub-section 13b1 of the second section 13b of the main tube 13. In an embodiment, the bracket 400 is disposed on the second sub-section 13b2 of the second section 13b of the main tube 13. In an embodiment, the bracket 400 is disposed on the second sub-section 13b2 adjacent to the second end 52 of the first sub-section 13b1 . The first member 302 of the mounting unit 300 is adapted to receive the pressure control unit 43. In an embodiment, the first member 302 has one or more mounting holes (not shown) and the pressure control unit 43 also has one or more mounting holes (not shown). During assembly, the one or more mounting holes on the first member 302 are aligned with the one or more mounting holes on the pressure control unit and fastened with one or more fasteners F such as bolts, nuts, screws, washers, studs and the likes known to person skilled in the art. [046] The clamping unit/bracket 400 is adapted to receive the second member 304 of the mounting unit 300. In an embodiment, the second member 304 of the mounting unit 300 has one or more mounting holes M5 and the clamping unit/bracket 400 has one or more mounting holes M6. During assembly, the one or more mounting holes M5 on the second member are aligned with one or more mounting holes M6 on the clamping unit/bracket 400 and fastened with one or more fasteners F such as bolts, nuts, screws, washers, studs and the likes known to person skilled in the art.

[047] Advantageously, the present invention provides mounting of pressure control unit 43 on the frame structure 11 in a region which is close to the center of gravity of the two-wheeled vehicle resulting in stable riding conditions. Yet another advantage of the present invention is that the pressure control unit 43 is mounted on a mounting assembly which can be detachably attached to frame structure 11 leading to ease in installation, maintenance and service of the braking assembly/pressure control unit 43. Yet another advantage of the present invention is retrofitablility as the pressure control unit 43 with detachable mounting assembly can be installed in conventional braking system as well as in a different type of contemporary braking system. Yet another advantage of the present invention is the simple and economical construction of the mounting assembly on which the pressure control unit 43 is assembled. Yet another advantage of the present invention is that the mounting assembly can be easily assembled on the frame structure 11 without the use of numerous components.

[048] While the present invention has been described with respect to certain embodiments, it will be apparent to those skilled in the art that various changes and modification may be made without departing from the scope of the invention as defined in the following claims.

List of Reference Numerals

10-vehicle

1 1 - frame structure

12-head tube

13-main tube

13a- first section

13b- second section

13b1 - first sub-section of second section

13b2- second sub-section of second section

14- rear tubes

20- handlebar

21 - front wheel

22-front fender

23- front fork assembly

24- fuel tank

25- power generating unit 26- transmission assembly

30- seat

31 - head lamp unit

32- turn signal lamp unit

33- headlamp housing assembly

35- rear wheel

36- air cleaner

37- rear suspension system

41 - front brake device

42- rear brake device

43- pressure control unit

45- front brake actuating means

46- rear brake actuating means

47- swing arm

48- rear fender

49- rear cover

50-first end of the first sub-section

52- second end of the first sub-section

54- outer surface of the second section

56- power generating unit mounting bracket

100, 300- mounting unit

102- first vertical member

104- horizontal member 106-second vertical member

108- seating member

108a- recessed portion of the seating member

200-clamping unit

202- curved member

202a- resilient elastic member

202b- inner surface of the curved member

202c- outer surface of the curved member

204- first clamping member

206- second clamping member

302- first member

304- second member

400- bracket

M1 - mounting holes on the first vertical member

M2- mounting holes on the pressure control unit

M3-mounting holes on second vertical member

M4- Mounting holes on the first and second clamping members

M5- mounting holes on second member

M6- mounting holes on bracket

F- Fasteners