Motorcycles

Abstract

The present invention relates to a motorcycle (10) having a brake assembly with a pressure control unit (43). The motorcycle (10) comprises a head pipe (12) and a main tube (13) extending rearward from the head pipe (12). The main tube (13) comprises a first section (13a) and a second section (13b). The first section (13a) extends rearward from the head pipe (12). The second section (13b) extends rearward and downward from the first section (13a). The brake assembly includes a pressure control unit (43) capable of controlling pressure for braking between the front wheels (21) and the rear wheels (35) of the vehicle, where the pressure control unit (43) is mounted on the second section (13b) of the main tube (13).

Description

[Technical field]

[0001] The present invention relates to a two-wheeled motor vehicle, and more particularly to the mounting of a pressure control unit of a braking assembly on a two-wheeled motor vehicle. [Background technology]

[0002] Conventional braking systems in motorcycles involve independent actuation of the front and rear brakes. The front brake actuation means for the front brakes are generally provided on the handlebars of the motorcycle, whereas the rear brake actuation means for the rear brakes are generally provided on the handlebars or on the vehicle frame in the form of a foot pedal. However, conventional braking systems generally involve several risks related to motorcycle safety. For example, if only the front brake is applied, the rear wheel faces the risk of lifting up and the vehicle toppling over. The front wheel may also face the risk of skidding. On the other hand, if only the rear brake is applied, the front wheel continues to roll and the vehicle faces the risk of skidding or a longer stopping distance.

[0003] To overcome the drawbacks associated with the conventional braking system, the conventional braking system in the motorcycle is replaced with a modern braking system, in which the braking force is distributed between the front and rear brakes. In the modern braking system, actuation of the rear brake pedal results in actuation of the front brake in addition to actuation of the rear brake. Actuation of the front brake lever results in actuation of only the front brake or also the rear brake. The modern braking system comprises a pressure control unit that controls the brake fluid pressure and the braking system, such as a disc brake system, including master cylinders, connecting hoses and calipers for the front and rear wheels. In one non-limiting example, the pressure control unit distributes the braking force between the front and rear brakes upon actuation of either the actuation means of the front brake (e.g., brake lever) or the actuation means of the rear brake (e.g., brake pedal) based on different vehicle parameters. Thus, the presence of the modern braking system in the motorcycle aids in balanced actuation of the front and rear brakes, thereby ensuring the safety of the motorcycle.

[0004] Various locations have been disclosed in the prior art for mounting the pressure control unit in a two-wheeled vehicle. However, such pressure control units are located away from the center of gravity of the vehicle. In a motorcycle, the center of gravity (CG) is located under the rider's seat. Location of the pressure control unit away from the CG creates an unstable riding condition. Similarly, the pressure control unit should not be located in a location that is difficult to access. For example, locating the pressure control unit on the upper surface of the seat stay and having it supported on the seat stay side increases assembly time and service costs as well as requires undesirable complex hose routing between the front and rear brake devices. It is also known that the pressure control unit is located in the seat cowl and supported by a portion of the vehicle frame. However, such a location is very close to the tire, increasing the possibility of undesirable dust accumulation in the pressure control unit. Also, in all the above locations, the length of the hose connecting the pressure control unit to the front and rear brake devices is not uniform, and therefore, a good brake feel cannot be achieved.

[0005] Furthermore, as a result of the safety improvements associated with modern braking systems, governments of many countries are mandating the use of any one of the modern braking systems, such as antilock braking system (ABS), combined braking system (CBS), etc., which are interlocking braking systems, in motorcycles. Therefore, it is required that manufacturers install any one of the modern braking systems on existing motorcycles that are manufactured without any one of the modern braking systems. Therefore, there is a need to ensure the retrofittability of the above-mentioned parts of the modern braking system, and thus, they can be easily installed on existing automobiles without substantial modifications to the existing automobiles, including the frame structure of the motorcycle.

[0006] Furthermore, the pressure control unit in the prior art is placed on the vehicle using a bracket that is permanently welded to the frame of the vehicle. Therefore, since a fixed bracket that is welded to the frame is used to fix the pressure control unit, it becomes difficult to retrofit the pressure control unit to other vehicle frames that do not have the bracket. Furthermore, the use of a fixed bracket also limits the flexibility that would be available in terms of adapting the pressure control unit of a different brake system, for example, a pressure control unit of a combined brake system in a motorcycle that was previously installed with a pressure control unit such as a hydraulic control unit of an antilock brake system. Summary of the Invention [Problem to be solved by the invention]

[0007] In view of the above, it would be desirable to overcome the shortcomings described in the prior art with respect to mounting a pressure control unit on a two-wheeled motor vehicle. [Means for solving the problem]

[0008] In one aspect of the present invention, a motorcycle having a brake assembly with a pressure control unit is disclosed. The motorcycle includes a head pipe and a main tube extending rearwardly from the head pipe. The main tube includes 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 pressure for braking operation between front and rear wheels of the vehicle, where the pressure control unit is mounted to the second section of the main tube.

[0009] In one embodiment, the second section includes at least a first subsection and a second subsection. The first subsection is disposed between the first section and the second subsection. The first subsection has a first end and a second end, where the first end is connected to the first section and the second end is connected to the second subsection. It should be understood that the first section and the second section may be integrally or separately formed. Similarly, the first subsection and the second subsection of the second section may be integrally or separately formed.

[0010] In one embodiment, the first subsection is a sloped section.

[0011] In one embodiment, the pressure control unit is mounted to the first subsection of the second section.

[0012] In one embodiment, the pressure control unit is mounted to the second subsection adjacent the second end of the first subsection.

[0013] In one embodiment, the pressure control unit is mounted to the second section of the main tube in an area between the fuel tank and the transmission assembly vertically of the vehicle and between the power generating unit and the air cleaner vertically of the vehicle.

[0014] In one embodiment, the two-wheeled vehicle includes a mounting assembly having a mounting unit and a clamping unit for mounting the pressure control unit to 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 fore-aft direction of the vehicle. The first vertical member extends from the first end of the horizontal member in an upward direction of the vehicle. The second vertical member extends from the second end of the horizontal member in a downward direction of the vehicle. The seating member is provided on the second vertical member. The seating member has a recess that can be disposed on an outer surface of the second section of the main tube. The recess of the seating member can be provided with an elastically elastic member. The elastically elastic member can be fixedly or removably attached to the recess. The presence of the elastically elastic member helps to ensure that the recess of the seating member is firmly disposed on the second section of the main tube without any damage to the second section of the main tube. The clamping unit includes a bending member extending between the first clamping member and the second clamping member. The bending member of the clamping unit is also adapted to be disposed on the outer surface of the second section. An inner surface of the bending member facing the outer surface of the second section may be provided with an elastically elastic member. The elastically elastic member may be fixedly or detachably attached to the bending member. The presence of the elastically elastic member helps to ensure that the inner surface of the bending member is firmly disposed on the second section of the main tube without 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 corresponding to one or more mounting holes provided in the pressure control unit. The second vertical member of the mounting unit has one or more mounting holes corresponding to one or more mounting holes provided in the first clamping member and the second clamping member of the clamping unit.During assembly, the one or more mounting holes in the first vertical member are aligned with one or more mounting holes in the pressure control unit and secured together using one or more fasteners such as bolts, nuts, screws, washers, studs, etc., as known to those of skill in the art, and the one or more mounting holes in the second vertical member are aligned with one or more mounting holes in the first and second clamp members and secured together using one or more fasteners such as bolts, nuts, screws, washers, studs, etc., as known to those of skill in the art.

[0015] In one 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 width direction of the vehicle. The second member extends from either the first end or the second end of the first member in a rearward direction of the vehicle. The clamping unit is a bracket disposed on a 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 and second members of the mounting unit has one or more mounting holes. The bracket also has one or more mounting holes. During assembly, the one or more mounting holes on the first member are aligned with one or more mounting holes provided on the pressure control unit and secured using one or more fasteners, such as bolts, nuts, screws, washers, studs, etc., known to those skilled in the art. Additionally, one or more mounting holes in the bracket are aligned with one or more mounting holes in the second member of the mounting unit and secured using one or more fasteners, such as bolts, nuts, screws, washers, studs, etc., as known to those skilled in the art.

[0016] In one embodiment, the pressure control unit is a hydraulic modulator to prevent at least one of the front and rear wheels from locking.

[0017] In one embodiment, the pressure control unit is a hydraulic control valve for distributing hydraulic pressure between the front and rear wheels.

[0018] Reference will be made to embodiments of the invention, examples of which may be illustrated in the accompanying figures. These figures are intended to be illustrative, not limiting. While the invention will generally be described in the context of these embodiments, it will be understood that it is not intended to limit the scope of the invention to these particular embodiments. [Brief description of the drawings]

[0019] [Figure 1] 1 is a schematic diagram of a two-wheeled vehicle according to an embodiment of the present invention; [Diagram 2] 1 is a perspective view of a frame structure of a two-wheeled vehicle showing the configuration of a brake system according to an embodiment of the present invention. [Diagram 3] FIG. 2 is an enlarged view of a portion of a brake system secured to a portion of a frame structure according to an embodiment of the present invention. [Figure 4] 1 is a perspective view of a main tube of a motorcycle and a pressure control unit disposed on the main tube with the aid of a mounting assembly, according to an embodiment of the present invention. [Diagram 5] 1 is a perspective view of a main tube of a motorcycle and a pressure control unit disposed on the main tube with the aid of a mounting assembly, according to an embodiment of the present invention. [Figure 6] FIG. 13 is a detailed view of a mounting unit that may be positioned on the second section of the main tube, according to one embodiment of the present invention. [Figure 7] FIG. 13 is a detailed view of a mounting unit that may be positioned on the second section of the main tube, according to one embodiment of the present invention. [Figure 8] FIG. 2 illustrates a pressure control unit being assembled to an on-board unit, according to one embodiment of the present invention. [Figure 9] FIG. 2 illustrates a pressure control unit being assembled to an on-board unit, according to one embodiment of the present invention. [Figure 10]13 is an exploded view of a mounting assembly having a mounting unit and a clamping unit that can be positioned on the second section of the main tube, according to one embodiment of the present invention. FIG. [Figure 11] FIG. 13 is an exploded view of a mounting unit and a clamping unit / bracket according to an alternative embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0020] Various features and embodiments of the present invention herein can be discerned from the further description set forth below.

[0021] FIG. 1 shows a schematic diagram of a motorcycle 10 according to an embodiment of the present invention. The motorcycle 10 includes a frame structure 11 (shown in FIG. 2) for supporting various parts of the vehicle 10. A head tube 12 is provided at the front end of the frame structure 11. The head tube 12 supports a steering shaft (not shown) for a certain range of rotation. At 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 is in turn connected to the handlebar 20 by a pair of upper and lower brackets (not shown). The front fork assembly 23 is further supported partially on a front fender 22 and 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 diverting to the upper portion of the front fork assembly 23.

[0022] In the front part of the frame structure 11 (shown in FIG. 2), a fuel tank 24 is located immediately behind the handlebars 20, above the main tubes 13 of said frame structure 11 (shown in FIG. 2) and above the power generating unit 25. In one embodiment in which a fuel pump is provided, the fuel tank 24, which forms part of a fuel supply system, supplies fuel to the power generating unit 25 through a fuel pump (not shown) which also forms part of said supply system. In another embodiment in which there is no fuel pump, the fuel tank 24 supplies fuel to the power generating unit 25 through a carburetor (not shown). A seat 30 is located behind the fuel tank 24. The seat 30 includes a front rider portion and a rear seat portion. In one embodiment, the front rider portion and the rear seat portion are provided as separate seat portions. In one embodiment, the front rider portion and the rear seat portion are provided as a single seat portion.

[0023] For the safety of riders and in compliance with traffic regulations, a headlight unit 31 and a turn signal lamp unit 32 are provided at the front part of the automobile 10. The headlight unit 31 and the turn signal lamp unit 32 are stored in a headlight storage assembly 33.

[0024] The safety of said two-wheeled vehicle 10 is also improved by providing a braking system, for example a link-type braking system controlling the braking operation of the front and rear braking devices 41, 42 of the front and rear wheels 21, 35, respectively. The braking system includes a pressure control unit 43 and helps to ensure that there is a proper distribution of braking forces between the front and rear braking devices 41, 42 upon activation of at least one of the front brake actuation means 45 (shown in FIG. 2) or the rear brake actuation means 46 (shown in FIG. 2), thereby protecting the vehicle 10 from the risk of tipping over or skidding.

[0025] As shown in the figure, the pressure control unit 43 is disposed in the main tube 13. More specifically, the pressure control unit 43 is disposed in the main tube 13 in a region between the fuel tank 24 and the transmission assembly 26 in the vertical direction of the vehicle, and between the power generating unit 25 and the air cleaner 36 in the longitudinal direction of the vehicle. In other words, the pressure control unit 43 is disposed in 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 fixed to a pair of rear tubes 14 extending rearward from the main tube 13, and above a portion of the transmission assembly 26 of the vehicle 10. Therefore, the pressure control unit 43 is located in a substantial middle portion of the vehicle 10, and the center of gravity of the vehicle 10 is located near the pressure control unit 43, thereby generating a stable riding state.

[0026] Further, a suspension system is provided for comfortable steering of said vehicle 10 on the road. A front fork assembly 23 forming a front suspension system acts as a rigid component like the frame structure 11. The front fork assembly 23, clamped to the head tube 12 through an upper bracket (not shown) and a lower bracket (not shown), is movable in the left-right direction of the vehicle 10. Further, a rear suspension system 37, which may be of a hydraulic damping configuration, is connected to the frame structure 11 at its rear part. In particular, at the rear part of the frame structure 11, a rear wheel 35 is suspended by the rear suspension system 37.

[0027] The power generating unit 25 is mounted to a lower front portion of the frame structure 11 (shown in FIG. 2) by a front power generating unit mounting bracket (not shown) and is positioned below a portion of the main tube 13. The power generating unit 25 is equipped with an exhaust system including 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 rearward along the rear wheels 35.

[0028] Power from the power generating unit 25 is transmitted through a transmission assembly 26 to the rear wheels 35 for driving and rotating the rear wheels 35. The transmission assembly 26 includes a gearbox containing a gear train and a drive mechanism connecting the gearbox to the rear wheels 35. In particular, the gear train includes a gear shift shaft and a number of gears, each having a varying gear ratio. In particular, speed changes are achieved by operation of a gear shift linkage assembly operatively connected to a gear shift shaft (not shown) of the transmission assembly 26.

[0029] Thus, power from the power generating unit 25 is transmitted to the rear wheel 35, which is rotatably supported at the rear end of the swing arm 47. A rear fender 48 for covering an upper surface of the rear wheel 35 is mounted on 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 located near the rear wheel 35. A number of rear covers 49 are attached to the rear portion of the frame structure 11 to enhance the overall aesthetics of the automobile 10 and to prevent unwanted external particles from entering parts of the automobile 10.

[0030] Fig. 2 shows a perspective view of a frame structure 11 of a motorcycle 10 illustrating the configuration of a braking system according to an embodiment of the present invention. Fig. 3 shows an enlarged view of a portion of the braking system fixed to a portion of the frame structure 11 according to an embodiment of the present invention.

[0031] As shown, a portion of the main tube 13 extends rearwardly from the head tube 12 and further extends downwardly toward the power generating unit mounting bracket 56. The main tube 13 supports a pressure control unit 43 that is operatively connected to a front brake line 41b that extends to a front caliper 41a of the front braking device 41 and a rear brake line 42b that extends to a rear brake caliper 42a of the rear braking device 42. In one embodiment, the portion of the main tube 13 supports the front brake line 41b.

[0032] The pressure control unit 43 controls the pressure corresponding to the driving condition for braking operation of the front braking device 41 and the rear braking device 42. In one embodiment, the pressure control unit 43 is a hydraulic modulator unit that prevents the wheels from skidding. In one embodiment, the pressure control unit is a hydraulic control valve that allows for the distribution of pressure between the front wheels 21 and the rear wheels 35. In one embodiment, the pressure control unit 43 is a pneumatic control unit. In one embodiment, the pressure control unit may be used in an anti-lock braking system (ABS) application. In one embodiment, the pressure control unit may be used in a combined braking system (CBS) application.

[0033] 4 and 5 show perspective views of the main tube 13 of the motorcycle 10 and the pressure control unit 43 disposed thereon with the aid of a mounting assembly, according to one embodiment of the present invention.

[0034] As already mentioned in the previous paragraph, the main tube 13 extends rearwardly from the head pipe 12. As shown, the main tube 13 has a first section 13a extending rearwardly from the head pipe 12 and a second section 13b extending rearwardly and downwardly from the first section 13a. The braking assembly pressure control unit 43 is mounted to the second section of the main tube 13.

[0035] In one embodiment, the second section 13b is further divided into at least a first subsection 13b1 and a second subsection 13b2. The first subsection 13b1 is provided between the first section 13a and the second subsection 13b2. It should be understood that the first section 13a, the first subsection 13b1, and the second subsection 13b2 may be integrally or separately formed. The first subsection 13b1 extends between a first end 50 and a second end 52, where the first end 50 is connected to the first section 13a and the second end 52 is connected to the second subsection 13b2. In one embodiment, the pressure control unit 43 is mounted to the first subsection 13b1. In one embodiment, the pressure control unit 43 is mounted to the second subsection 13b2. In one embodiment, the pressure control 43 unit is mounted to the second subsection 13b2 adjacent the second end 52 of the first subsection 13b1. In one embodiment, the first subsection 13b1 is a sloped section.

[0036] Also as shown, the pressure control unit 43 is removably connected to the main tube 13 using a mounting assembly having a mounting unit 100 and a clamp unit 200, which will be described in detail in subsequent paragraphs.

[0037] 6 and 7 show detailed views of a mounting unit 100 that can be positioned on the second section 13b of the main tube 13, according to one embodiment of the present invention.

[0038] As shown, the mounting assembly includes a mounting unit 100 that can be positioned on the second section 13b of the main tube 13. In one embodiment, the mounting unit 100 is positioned on a first subsection 13b1 of the second section 13b of the main tube 13. In one embodiment, the mounting unit 100 is positioned on a second subsection 13b2 of the second section 13b of the main tube 13. In one embodiment, the mounting unit 100 is positioned on the second subsection 13b2 adjacent the second end 52 of the first subsection 13b1.

[0039] 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 longitudinal direction of the vehicle. The first vertical member 102 extends from the first end of the horizontal member 104 in the upward direction of the vehicle, and the second vertical member 106 extends from the second end of the first horizontal member 104 in the downward direction of the vehicle. The seating member 108 is provided on the second vertical member 106. The seating member 108 faces the outer surface 54 of the second section 13b of the main tube 13 and has a recess 108a that can be placed on the outer surface 54 of the main tube 13. The recess 108a has dimensions corresponding to those of the external surface 54 of the second section 13b of the main tube 13 such that the recess 108a receives a portion of the external surface 54 of the second section 13b of the main tube 13. In one embodiment, the elastic elastic member 108b is provided in the recess (shown in FIG. 10). The elastic elastic member 108b can be fixedly / removably attached to the recess 108a. The presence of the elastic elastic member 108b between the external surface 54 and the recess 108a helps to ensure that the recess 108a of the seating member 108 is firmly placed on the external surface 54 of the second section 13b of the main tube 13 without any damage to the second section 13b of the main tube 13. The first vertical member 102 is adapted to receive a pressure control unit. In one 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 FIG. 8). During assembly, one or more mounting holes M1 on the first vertical member 102 are aligned with one or more mounting holes M2 on the pressure control unit 43 and secured using one or more fasteners F, such as bolts, nuts, screws, washers, studs, etc., as known to those skilled in the art. The second vertical member 106 is adapted to receive the clamping unit 200 as illustrated in FIG. 10. In one embodiment, the second vertical member has one or more mounting holes M3.

[0040] 8 and 9 show pressure control unit 43 being assembled to on-board unit 100 according to one embodiment of the present invention.

[0041] As shown in Fig. 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 the 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 secured with one or more fasteners F, such as bolts, nuts, screws, washers, studs, etc., known to those skilled in the art. Fig. 9 shows the mounting unit 100 and the pressure control unit 43 in an assembled state.

[0042] FIG. 10 shows an exploded view of a mounting assembly having a mounting unit 100 and a clamping unit 200 that can be positioned on the second section of the main tube 13, according to one embodiment of the present invention.

[0043] The mounting unit 100 has the same structure as described in FIG. 6 and FIG. 7. As shown, the mounting unit 100 is disposed on the second subsection 13b2 of the main tube 13b. However, this figure should not be construed as limiting, and the mounting unit 100 may be disposed on the first subsection 13b1 of the second section 13b of the main tube 13. Furthermore, as shown, the elastic elastic member 108b may be fixedly or detachably attached to the recess 108a of the seating member 108. The presence of the elastic elastic member 108b between the outer surface 54 and the recess 108a helps to ensure that the recess 108a of the seating member 108 is firmly disposed on the outer surface 54 of the second section 13b of the main tube 13 without any damage to the second section 13b of the main tube 13. Furthermore, a clamping unit 200 is also shown, which includes a bent member 202 extending between the first clamping member 204 and the second clamping member 206. The bending member 202 of the clamping unit 200 has an inner surface 202b and an outer surface 202c. The inner surface 202b of the bending member 202 is adapted to be placed on the outer surface 54 of the second section 13b of the main tube 13. The elastic elastic member 202a can be fixedly / removably attached to the inner surface 202b of the bending member 202. The presence of the elastic elastic member 202a between the outer surface 54 of the second section 13b and the inner surface 202b of the bending member 202 helps to ensure that the bending member 202 is firmly placed on the outer surface 54 of the second section 13b of the main tube 13 without any damage to the second section 13b of the main tube 13. The dimensions of the inner surface 202b of the bending member 202 correspond to 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 bending member 202 receives a portion of the outer surface 54 of the second section 13b of the main tube 13. The first clamp member 204 and the second clamp member 206 each have one or more mounting holes.

[0044] During assembly, the recess 108a of the seating member 108 and the inner surface 202b of the bent member 202 are positioned against the outer surface 54 of the second section 13b of the main tube 13, and the mounting holes M4 on the first and second clamp members 204, 206 are aligned with the mounting holes M3 on the second vertical member 106 and secured together using one or more fasteners F, such as bolts, nuts, screws, washers, studs, etc., as known to those skilled in the art.

[0045] FIG. 11 shows an exploded view of a mounting unit 300 and a clamping unit / bracket 400 according to an alternative embodiment of the present invention.

[0046] 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 a width direction of the vehicle. The second member 304 extends from one of the first end or the second end of the first member 302 in a rear direction of the vehicle. The clamping unit 400 comprises a bracket disposed on the second section 13b of the main tube. In one embodiment, the bracket is disposed on the first subsection 13b1 of the second section 13b of the main tube 13. In one embodiment, the bracket 400 is disposed on the second subsection 13b2 of the second section 13b of the main tube 13. In one embodiment, the bracket 400 is disposed on the second subsection 13b2 adjacent to the second end 52 of the first subsection 13b1. The first member 302 of the mounting unit 300 is adapted to receive a pressure control unit 43. In one 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 one or more mounting holes on the pressure control unit and secured with one or more fasteners F, such as bolts, nuts, screws, washers, studs, etc., known to those skilled in the art.

[0047] The clamping unit / bracket 400 is adapted to receive the second member 304 of the mounting unit 300. In one 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 the one or more mounting holes M6 on the clamping unit / bracket 400 and secured using one or more fasteners F, such as bolts, nuts, screws, washers, studs, etc., known to those skilled in the art.

[0048] Advantageously, the present invention provides mounting of the pressure control unit 43 to the frame structure 11 in an area near the center of gravity of the motorcycle that results in stable riding conditions. Yet another advantage of the present invention is that the pressure control unit 43 is mounted to a mounting assembly that can be removably attached to the frame structure 11 resulting in ease of installation, maintenance and servicing of the braking assembly / pressure control unit 43. Yet another advantage of the present invention is retrofitability since the pressure control unit 43 with a removable mounting assembly can be installed in conventional braking systems as well as in different types of modern braking systems. Yet another advantage of the present invention is the simple and economical construction of the mounting assembly to which the pressure control unit 43 is assembled. Yet another advantage of the present invention is that the mounting assembly can be easily assembled to the frame structure 11 without using a large number of components.

[0049] While the present invention has been described with respect to several embodiments, it will be apparent to those skilled in the art that various changes and modifications can be made without departing from the scope of the invention as defined in the claims below. [Explanation of symbols]

[0050] 10. Automobiles 11 Frame structure 12 Head tube 13 Main Tube 13a First Section 13b Second Section 13b1 First subsection of the second section 13b2 Second subsection of the second section 14 Rear Tube 20 Handlebar 21 Front wheel 22 Front fender 23 Front fork assembly 24 Fuel Tank 25 Power Generation Unit 26 Transmission Assembly 30 sheets 31 Headlight unit 32 Turn signal lamp unit 33 Headlight storage 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 actuation means 46 Means for operating rear brakes 47 Swingarm 48 Rear fender 49 Rear cover 50 First end of first subsection 52 second end of first subsection 54 Second Section External Surface 56 Power generating unit mounting bracket 100, 300 mounted units 102 First vertical member 104 Horizontal Member 106 Second Vertical Member 108 Seat member 108a Recess of seating member 200 Clamp unit 202 Curved Members 202a Elastic elastic member 202b Inner surface of curved member 202c Outer surface of curved member 204 First clamp member 206 Second clamp member 302 First Component 304 Second Component 400 Bracket M1 Mounting hole on first vertical member M2 Mounting hole on pressure control unit M3 Mounting holes on second vertical member M4 mounting holes on first and second clamp members M5 Mounting holes on second component M6 mounting holes on bracket F Fastener

Claims

1. A two-wheeled vehicle (10), A head pipe (12), a main tube (13) extending rearward from the head pipe (12), the main tube having a first section (13a) extending rearward from the head pipe (12) and a second section (13b) extending rearward and downward from the first section (13a); a braking assembly having a pressure control unit (43) capable of controlling pressure for braking between the front wheels (21) and the rear wheels (35) of the vehicle (10), wherein the pressure control unit (43) is mounted on the second section (13b) of the main tube (13); A two-wheeled vehicle (10) comprising:

2. The second section (13b) comprises at least a first subsection (13b1) 2. The two-wheeled vehicle (10) according to claim 1, further comprising a second subsection (13b2), wherein the first subsection (13b1) is provided between the first section (13a) and the second subsection (13b2).

3. 3. The two-wheeled vehicle (10) of claim 2, wherein the first subsection (13b1) has a first end (50) connected to the first section (13a) and a second end (52) connected to the second subsection (13b2).

4. 3. The two-wheeled vehicle (10) according to claim 2, wherein the first subsection (13b1) is an inclined section.

5. 3. The two-wheeled vehicle (10) according to claim 2, wherein the pressure control unit (43) is mounted on the first subsection (13b1) of the second section (13b).

6. 3. The two-wheeled vehicle (10) according to claim 2, wherein the pressure control unit (43) is mounted on the second subsection (13b2) adjacent to the second end (52) of the first subsection (13b1).

7. 2. The two-wheeled vehicle (10) according to claim 1, wherein the pressure control unit (43) is mounted on the second section (13b) in a region between the fuel tank (24) and the transmission assembly (26) in the vertical direction of the vehicle and between the power generating unit (25) and the air cleaner (36) in the longitudinal direction of the vehicle.

8. 2. The two-wheeled vehicle (10) according to claim 1, comprising a mounting assembly having a mounting unit (100, 300) and a clamping unit (200, 400) for mounting the pressure control unit on the second section (13b).

9. The mounting unit (100) a horizontal member (104) extending in a longitudinal direction of the vehicle between a first end and a second end; a first vertical member (102) extending from the first end of the horizontal member upwardly of the vehicle; a second vertical member (106) extending from the second end of the horizontal member downwardly of the vehicle; a seating member (108) provided on the second vertical member (106), the seating member having a recess (108a) that can be positioned on the outer surface (54) of the second section (13b); 9. The two-wheeled vehicle (10) according to claim 8, comprising:

10. The two-wheeled vehicle (10) according to claim 9, wherein a resilient elastic member (108b) is disposed in the recess (108a).

11. 10. The two-wheeled vehicle (10) of claim 9, wherein the clamping unit (200) comprises a bent member (202) extending between a first clamping member (204) and a second clamping member (206), the bent member (202) being capable of being positioned on the outer surface (54) of the second section (13b).

12. The two-wheeled vehicle (10) according to claim 11, wherein a resilient elastic member (202a) is disposed on an inner surface (202b) of the bent member (202).

13. 10. The two-wheeled vehicle (10) of claim 9, wherein the first vertical member (102) of the mounting unit (100) is configured to receive the pressure control unit (43).

14. 12. The two-wheeled vehicle (10) of claim 11, wherein the second vertical member (106) of the mounting unit (100) is configured to receive the first clamp member (204) and the second clamp member (206) of the clamp unit (200).

15. the first vertical member (102) and the second vertical member (106) of the mounting unit (100) have one or more mounting holes; The first clamp member (204) and the second clamp member (206) of the clamp unit (200) have one or more mounting holes. A two-wheeled vehicle (10) according to claim 13.

16. The mounting unit (300) a first member (302) extending across the width of the vehicle between a first end and a second end; a second member (304) extending from one of the first end or the second end of the first member (302) in a rearward direction of the vehicle; 9. The two-wheeled vehicle (10) according to claim 8, comprising:

17. 9. The two-wheeled vehicle (10) according to claim 8, wherein the clamping unit (400) is a bracket disposed on the second section (13b) of the main tube (13) and configured to receive the second member (304) of the mounting unit (300).

18. 18. The two-wheeled vehicle (10) of claim 17, wherein the first member (302) is configured to receive the pressure control unit (43).

19. The first member (302) and the second member (304) of the mounting unit (300) have one or more mounting holes; The bracket has one or more mounting holes.

19. A two-wheeled vehicle (10) according to claim 18.

20. 2. The two-wheeled vehicle (10) of claim 1, wherein the pressure control unit (43) is a hydraulic modulator for preventing at least one of the front wheel (21) and the rear wheel (35) from locking.

21. 2. The two-wheeled vehicle (10) according to claim 1, wherein the pressure control unit (43) is a hydraulic control valve for distributing hydraulic pressure between the front wheel (21) and the rear wheel (35).

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