CN1188316C - Apparatus for joint braking front and back wheels of motor bicycle - Google Patents

Abstract

A front and rear interlocking brake device for two-wheeled motorcycles, which transmits the braking operating force of the interlocking brake lever to brakes that respectively transmit the respective braking operating forces to the front and rear wheel brakes through the operating force distribution lever. On the moving cable, there is no need to make initial adjustments at least between the linked brake lever and the operating force distribution lever, and the obtained front wheel braking force and braking feeling will not be affected when the front wheel brake lever is operated, and can be suitably Control the sinking amount of the front part of the brake car when the linkage brake lever is operated, thereby improving the riding experience. When the linkage brake lever is operated, the braking force of the front and rear wheel brakes can be different with a simple structure, and the expansion The scope of application in existing two-wheeled motorcycles has been improved.

Description

Front and rear linkage brake device for two-wheeled motorcycle

technical field

The present invention relates to a front and rear interlocking braking device for two-wheeled motorcycles, which transmits the braking operation force of the interlocking brake lever to the brake cables respectively transmitting the braking operation force to the front and rear wheel brakes through the operation force distribution lever; When the front wheel brake lever is operated, only the front wheel acts as a brake, and when the linkage brake lever is manipulated, the braking force is simultaneously generated on the front and rear wheel brakes; and according to the action corresponding to the linkage brake lever The action of the operating force distribution lever acts on the brake cables respectively corresponding to the front and rear wheel brakes from the traction force from the operating force distribution lever.

Background technique

Hitherto, such a front-rear interlocking braking device has been known from, for example, Japanese Patent Application Laid-Open No. 7-196069.

However, in the prior art mentioned above, since its structure transmits the braking operation force from the interlocking brake lever to the operating force distribution lever at a position far away from the interlocking brake lever through the transmission cable, then When doing the initial adjustment to transmit the brake operating force from the operating force distribution lever to the front and rear wheel brakes through the brake cables with the operation of the linkage brake lever, it is also necessary to adjust the linkage brake lever and the operation. The drive cables between the force distribution levers are adjusted.

Although it is desired to properly control the sinking amount of the front part of the two-wheeled motorcycle to improve riding comfort when the linkage brake is performed by the operation of the linkage brake lever, in the prior art, when the linkage brake lever During operation, only the braking force distribution between the front and rear wheels can be carried out, and there is no mechanism to control the amount of sinking of the front of the car.

Furthermore, in the prior art described above, the structure is such that equal braking forces are generated on the front and rear wheel brakes in response to the operation of the interlocking brake lever. Therefore, if the operation amount of the brake lever is the same, compared with the conventional two-wheeled motorcycle without the interlocking brake device, there will inevitably be a change in the braking feeling, so it is desirable to correspond to the operation of the interlocking brake lever. On one side of the front wheel and the rear wheel brake, a greater braking force is generated than the other, so that it can obtain a braking feeling similar to that of an existing two-wheeled motorcycle that does not have an interlocking braking device.

Furthermore, in the above-mentioned prior art, when setting the tension of the two brake cables, a change in the tension of one brake cable will cause a change in the tension of the other brake cable, so it is necessary to set the tension of the two brake cables at the same time. Setup is cumbersome.

Contents of the invention

The present invention has been made in view of the above-mentioned various problems, and its first object is to provide a front-rear interlocking brake device for motorcycles that does not require initial adjustment at least between the interlocking brake lever and the operating force distribution lever.

The 2nd object of the present invention is to provide a kind of braking device of two-wheeled motorcycle linked front and rear, it does not affect the front wheel braking force and braking feeling obtained when using the front wheel brake lever operation, and can properly control The amount of sinking of the front of the car when the brake lever is operated in conjunction with it improves the riding comfort.

The 3rd purpose of the present invention is to obtain different braking forces in the front and rear wheel brakes when the linkage brake lever is operated with a simple structure, thereby expanding the scope of application of the existing two-wheeled motorcycles, and the first of the present invention 4. The purpose is to provide a front and rear interlocking brake device of a two-wheeled motorcycle, which can set the tensions of the two brake cables respectively, so that the tension of the brake cables is easy to set.

In order to achieve the above-mentioned first object, the invention described in Scheme 1 of the present invention is a braking device for two-wheeled motorcycles that move forward and backward. It is supported on the holder fixed at one end of the steering handle to make the front wheel brake and the rear wheel brake linked to generate braking force. The brake cable transmits the brake operation force to the front and rear wheel brakes respectively. Corresponding to the braking action of the above-mentioned interlocking brake lever, the operating force distribution lever that can respectively pull the above-mentioned two brake cables and connect the above-mentioned interlocking brake lever and the two brake cables can operatively accommodate the operating force distribution lever. A fixed housing, and a handle cover covering the above-mentioned steering handle; it is characterized in that: the above-mentioned housing is arranged at a position adjacent to the above-mentioned interlocking brake lever along the length direction of the steering handle, and the above-mentioned two brake cables are connected along the vehicle. The above-mentioned operating force distribution lever is connected at a position separated from the body in the vertical direction. In this posture, the above-mentioned housing is arranged on the front side of the vehicle body of the steering handle and is covered by the handle cover.

According to the invention described in claim 1, since the interlocking brake lever is adjacent to the operation force distribution lever, it is possible to directly connect the interlocking brake lever and the operation force distribution lever in a highly rigid manner without adjustment. By performing the initial adjustment between the interlocking brake lever and the operating force distribution lever, adjustment deviation between the interlocking brake lever and the operating force distribution lever can be prevented, thereby improving the adjustment accuracy of the interlocking braking force.

Moreover, the structure of the casing can be made into a vertically long casing whose length in the up-down direction is greater than that in the front-rear direction of the motorcycle, and the casing can be effectively arranged in a limited space on one end side of the steering handle so that it It does not affect the operation of the steering handle and does not interfere with the handle cover covering the steering handle.

According to the invention described in claim 2 of the present invention, in addition to the structure of the invention described in claim 1, the braking force holding device for holding at least one of the two brake cables in a pulling operation state is configured as the braking force holding device. The operation lever of the element is provided on the above-mentioned casing protruding from the above-mentioned casing, and the steering handle is covered with a handle cover having an opening through which one end of the above-mentioned steering handle and the above-mentioned interlocking brake lever protrude. The lever protrudes outward from the above-mentioned opening, so that the brake force retaining device can be provided on the housing without providing a special opening for the operation lever on the handle cover, and unlike Replacing the handle cover on the two-wheeled motorcycle without interlocking device can make it applicable to the newly installed interlocking braking device, because on the handle cover except the opening that one end of the steering handle bar and the above-mentioned interlocking brake bar are used There is no additional opening outside the handle cover, so that the appearance of the handle cover can be made as good as in the past.

According to the invention described in claim 3 of the present invention, on the basis of the invention structure described in claim 1 or 2, by integrating a part of the housing with the holder, the number of parts can be reduced, and at the same time, the Assembling on the steering rod of the gripper, a part of the housing is assembled on the steering handle, so its assembly performance can be improved.

Furthermore, according to the invention described in Claim 4 of the present invention, in addition to the inventive structure described in Claim 2, the above-mentioned housing is arranged on the front side of the steering handle, and the length of the housing in the vertical direction is greater than that along the two wheels. In the elongated casing formed by the large length in the front and rear direction of the motorcycle, since the above-mentioned operation lever protruding from the front of the casing is arranged on the front side of the above-mentioned interlocking brake lever, even if the handle cover expands toward the front side of the steering handle If the output is set to be small, the handle cover can be used to cover the housing and the operating rod, which can prevent the handle cover from being enlarged, thereby increasing the degree of freedom in the design of the handle cover.

In order to achieve the above-mentioned second object, according to the invention described in claim 5 of the present invention, on the basis of the invention structure described in claim 1 above, only the front wheel brakes are controlled by setting when the interlocking brake lever is operated. The dynamic braking force control device maintains the braking effect and feeling by means of the operation of the front wheel brake lever; when the linkage brake lever is operated, it can properly control the sinking amount of the front part of the vehicle by controlling the front wheel braking force. Improve riding feel.

According to the invention described in Claim 6 of the present invention, in addition to the invention described in Claim 5 above, wherein the braking force control device uses a brake that can limit the front wheel braking accompanying the operation of the interlocking brake lever. The composition of the upper limit of the power can obtain a large braking force of the rear wheel and suppress the braking force of the front wheel when the interlocking brake lever is widely operated, so that the amount of sinking of the front part of the car is appropriate.

According to the invention described in Claim 7 of the present invention, in addition to the invention described in Claim 5 or 6 above, the braking force control device is configured to suppress the braking force of the front wheel brake at the initial stage of operation of the interlocking brake lever, In the early stage of the linkage brake lever operation, only the braking force on the rear wheel side causes the front of the car to sink, and the load on the front wheel caused by the load generated by the rider is compensated to obtain a good car. The feeling of sinking in the front can control the amount of sinking in the front of the car to an appropriate amount from the initial stage of the linkage brake lever operation.

In order to achieve the above-mentioned third object, according to the invention described in claim 8 of the present invention, in addition to the structure of the invention described in claim 1, the operation corresponding to the interlocking brake lever is distributed to the two brake levers by the operating force distribution lever. The brake operating forces on the brake cables are different from each other, and it is characterized in that the two brake cables are connected to the operating force distribution lever at positions with different distances from the connecting position of the above-mentioned interlocking brake lever on the operating force distribution lever. superior.

In the invention described in such scheme 8, only by means of the simple structure that the distances between the connecting positions of the interlocking brake lever on the operating force distribution lever are different to connect the two brake cables to the operating force distribution lever. When the interlocking brake lever is operated, the braking force on the front wheel and the rear wheel brake can be different, and it can be applied to avoid changing the braking operation feeling of the conventional two-wheeled motorcycle without the interlocking brake device. Structure.

According to the invention described in claim 9 of the present invention, on the basis of the invention described in claim 8, the diameter of the brake cable on the side where the brake operation force applied by the above-mentioned operation force distribution lever is larger among the two brake cables The diameter of the brake cable on the side where the braking operation force is smaller than the above is set to be larger, so that the rigidity of the brake cable on the side where the braking operation force is larger, that is, the side where the traction operation amount is larger, is smaller than the braking operation force. That is, the rigidity of the brake cable on the side with the smaller amount of traction action is greater, and the amount of expansion and contraction of the two brake cables is adapted to the amount of traction action, so that the amount of action of the operating force distribution lever can be optimal.

According to the invention described in claim 10 of the present invention, on the basis of the invention described in claim 8 or 9 above, the above-mentioned brake cable on the side of the brake cable whose distance from the connection part of the above-mentioned interlocking brake lever is smaller among the two brake cables A stopper is provided on the end of the operating force distribution lever, and a braking force holding device that can be clutched and engaged with the stopper is provided on the above-mentioned housing, and it can keep the brake cable of the above-mentioned one side in contact with the above-mentioned stopper. In the engaged traction action state, while the other brake cable is in the non-traction action state, the braking force holding device and the operating force distribution lever can be activated on the side corresponding to the larger action of the linkage brake lever operation. Engaged, the operation amount of the interlocking brake lever can be reduced when the braking force maintaining device is activated.

In order to achieve the above-mentioned fourth object, the invention according to claim 11 of the present invention is based on the invention of the above-mentioned claim 1. It operates between a position where the initial joint surface on the housing engages and a position where the interlocking brake lever is moved away from the initial joint surface.

In the structure of the invention described in claim 11, when the interlocking brake lever is in a non-operated state, the two brake cables can be prevented from interacting with each other by engaging the operating force distribution lever with the initial joint surface of the housing, so that the two brake cables can be separately operated. The tension setting of each brake cable makes it easy to set the tension of the brake cable.

Description of drawings

Fig. 1 is the overall structural diagram of front and rear interlocking braking device for two-wheeled motorcycle;

Fig. 2 is the left side view of the front part of the motorcycle;

Fig. 3 is a 3-direction plan view in Fig. 2;

Fig. 4 is a plan view of the left end of the steering handle with the handle cover removed;

Fig. 5 is a 5-direction plan view in Fig. 4;

Figure 6 is a cross-sectional view along line 6-6 in Figure 4;

Fig. 7 is the enlarged view of 7 in Fig. 5;

Fig. 8 is an enlarged view of the main part in Fig. 5 with the housing cover removed;

Fig. 9 is an enlarged sectional view along line 9-9 in Fig. 5;

Fig. 10 is an enlarged sectional view of the operating force distribution lever along line 10-10 in Fig. 8;

Fig. 11 is an enlarged sectional view of the operating force distribution lever along line 11-11 in Fig. 8;

Fig. 12 is a diagram corresponding to Fig. 7 showing the operating state of the braking force maintaining device;

Figure 13 is a plan view of the right end of the steering handle;

Fig. 14 is a front view to view 14 in Fig. 13;

Figure 15 is a cross-sectional view along line 15-15 in Figure 13;

Fig. 16 is a partially cut-away enlarged view seen from Fig. 14 toward the direction of view 16;

Fig. 17 is a sectional view along line 17-17 in Fig. 15;

Fig. 18 is a sectional view along line 18-18 in Fig. 15;

Fig. 19 is an enlarged sectional view along line 19-19 in Fig. 16;

Figure 20 is an enlarged sectional view along line 20-20 in Figure 16;

Fig. 21 is a cross-sectional view corresponding to Fig. 18 when the front wheel brake lever is manipulated in the non-operation state of the linked brake lever;

Fig. 22 is a sectional view corresponding to Fig. 21 when the interlocking brake lever is operated when the front wheel brake lever is in a non-operating state;

Fig. 23 is a sectional view corresponding to Fig. 22 when the linkage brake lever and the front wheel brake lever are simultaneously operated;

Fig. 24 is a view seen from line 24-24 in Fig. 14 before assembly;

Fig. 25 is a sectional view along line 25-25 in Fig. 24;

Fig. 26 is a characteristic diagram of braking force distribution.

Detailed ways

Hereinafter, an embodiment of the present invention will be described based on an embodiment of the present invention shown in the drawings.

In Fig. 1, the front and rear interlocking braking device for two-wheeled motorcycles is provided with a front wheel brake lever 31 corresponding to the brake operation to make the hydraulic front wheel brake B _F act, and corresponding to the brake operation to make the mechanical A brake lever 32 for interlocking operation of the type rear wheel brake B _R and the above-mentioned front wheel brake B _F in interlocking operation.

An interlocking brake lever 32 is connected to an approximate center of an operation force distribution lever 33, and both ends of the operation force distribution lever 33 are connected to one end of a front wheel brake cable 34 that transmits brake operation force to the front wheel brake _BF . , and the rear wheel brake cable 35 that transmits the brake operation force to the rear wheel brake _BR .

The rear wheel brake B _R is a drum brake, and it includes: a brake drum 37 supported on the rear wheel axle 36; Engaged brake shoes 40, 40; the two brake shoes 40, 40 can be crimped on the inner peripheral surface of the brake drum 37, and the cam 41 hinged on the brake disc 38; the base end is connected on the cam 41 The brake cam arm 42 that extends to the outside of the brake drum 37; the fixed arm 43 that is arranged on the brake disc 38 opposite to the brake cam arm 42; The brake cam arm 42 is pressed against the spring 44 which makes the two brake shoes 40, 40 close to each other. It generates a braking force corresponding to the input of the operating force applied to the brake cam arm 42 by the rear wheel brake cable 35 .

Referring to Fig. 2 to Fig. 7 at the same time, on the left end that is located at the steering handle 45 of small two-wheeled motorcycle vehicle body front portion, the rider's left hand holding portion 46 is set, and the steering handle 45 on the inside of this holding portion 46 is installed. Holder 47. That is, an arc-shaped mounting portion 47a substantially corresponding to the lower half of the steering handle 45 is integrally provided on the holder 47 to form an end of an arc-shaped mounting plate 48 substantially corresponding to the remaining half of the steering handle 45 and the above-mentioned installation. part 47a, and the other end is screwed on the holder 47 with a screw 49, whereby the holder 47 is fixed on the steering handle 45. On the holder 47, the base end portion of the interlocking brake lever 32 is rotatably supported by the screw shaft 50, and the interlocking brake lever 32 can be braked with the left hand holding the grip part 46. A helical return spring 51 is installed between the holder 47 and the interlocking brake lever 32, and the interlocking brake lever 32 is elastically pressed away from the grip part 46 under the elastic force of the return spring 51 direction.

The middle part of the steering handle 45 in the longitudinal direction is covered with a handlebar cover 53. The handlebar cover is formed by combining the front half and the rear half cover body 53a, 53b of synthetic resin. 46 and the interlocking brake lever 32 protrude from an opening 54 provided on the left side of the handlebar cover 53 .

Referring to Fig. 8 and Fig. 9 at the same time, at a position close to the inner side of the interlocking brake lever 32 along the length direction of the steering handle 45, the housing 56 movably accommodating the operating force distribution rod 33 is fixed at the front position of the steering handle 45. Above, the housing 56 is composed of a box-shaped shell 57 integrally provided on the holder 47 and opening forward, and a cover plate 58 that covers the open end of the box-shaped shell portion 57 and is combined with the shell portion 57 .

One end of the connecting rod 59 is connected to the base end of the interlocking brake lever 32 with a screw 60, and the connecting rod 59 can freely move through the side wall 57a on the side of the interlocking brake lever 32 of the shell portion 57 of the housing 56. , and inserted into the housing 56. A protective cover 61 is provided between the side wall 57 a of the housing 56 and the middle portion of the connecting rod 59 in the housing 56 , and the protective cover 61 prevents dust from entering the housing 56 from the insertion portion of the connecting rod 59 .

As clearly shown in FIGS. 10 and 11 , the operating force distribution lever 33 is a pair of flat plate portions 33 a, 33 b extending up and down parallel to each other. 33c, 33c are connected to each other, and the other end of the connecting rod 59 is connected to the middle part of the operation force distribution rod 33 in the longitudinal direction through the connecting pin 62 .

The case 56 movably accommodates the vertically long operation force distribution lever 33 and is formed in a vertically long structure whose length in the vertical direction is longer than that in the front-rear direction of the motorcycle.

In the shell portion 57 of the housing 56, the outer cables 34a, 35a of the front and rear brake cables 34, 35 are fixed in parallel at positions separated vertically from the side wall 57b opposing the side wall 57a. That is, one end of the front wheel brake cable 34 constituted by inserting the inner cable 34b freely into the outer cable 34a, the outer cable 34a is fixed on the side wall 57b, and the lower part of the operating force distribution lever 33 is fixedly connected to the end of the front wheel brake cable 34, which is arranged on its own. The outer cable 34a stretches out the stop block 64 on the end of the inner cable 34b inserted in the housing 56, and in the outer cable 35a, one end of the rear wheel brake cable 35 formed by the inner cable 35b is freely inserted, and the outer cable 35a is then fixed on the side wall 57b of shell portion 57 side by side with front wheel brake cable 34, then is connected with the stopper that is located at the end of inner cable 35b that stretches out from outer cable 35a on the top of operation force distribution lever 35a. Moving block 65.

With the aid of the interlocking brake lever 32, the braking operating force acts on the operating force distribution lever 33 through the connecting rod 59, and then the operating force distribution lever 33 distributes it to the two brake cables 34, 35. The brake operation forces distributed by the rod 33 to the two brake cables 34, 35 are different from each other, and the distances between the two brake cables 34, 35 and the connection position of the operation force distribution rod 33 of the connecting rod 59 are different from each other. The upper part is connected with the operating force distribution lever 33. That is, in this embodiment, when the distance between the connecting position on the operating force distribution rod 33 of the connecting rod 59 and the connecting position on the operating force distribution rod 33 of the front wheel brake cable 34 is taken as L _F , and When L _R is the distance between the connection position of the connecting rod 59 on the operation force distribution rod 33 and the connection position of the rear brake cable 35 on the operation force distribution rod 33 , then L _F >L _R is set.

When the force input from the interlocking brake lever 32 to the operation force distribution lever 33 via the connecting rod 59 is taken as F, and the pulling force acting on the front wheel brake cable 34 from the operation force distribution lever 33 is taken as _FF , and When the pulling force acting on the rear wheel brake cable 35 from the operating force distribution lever 33 is taken as _FR , the two pulling forces _FF and _FR can be expressed by the following equations (1) and (2).

F _F ＝F·{L _R /(L _F +L _R )}………………(1)

F _R ＝F·{L _F /(L _F +L _R )}……………(2)

In the above formulas (1) and (2), since L _F >L _R , so F _R >F _F , the brake operating force acting on the rear wheel brake cable 35 from the operating force distribution lever 33 is greater than Brake operating force on the front wheel brake cable 34 . Therefore, among the two brake cables 34, 35, the brake cable on the side where the brake operation force applied by the operation force distribution lever is large, that is, the diameter _DR of the rear wheel brake cable 35 is set to a ratio. The diameter _DF of the front brake cable 34 is larger on the side where the dynamic operation force is smaller. That is, the bending rigidity of the front wheel brake cable is lower, and when a headlight not shown in the figure is installed on the handlebar cover 53, it can be arbitrarily detoured up and down the headlight, so that it becomes easier to arrange the front wheel brake cable 34. It is easy, and friction caused by the movement of the inner cable 34 can be suppressed even if such a detour is made. In addition, the middle portion of the front brake cable 34 is supported by the rear brake cable 35 via the fixture 66 , and the front brake cable 34 is partially arranged along the rear brake cable 35 .

On the above-mentioned side wall 57b of the housing 56, an initial joint surface 67 opposite to the operation force distribution lever 33 is provided, and the joint plate portions 33d, 33e, and 33f are provided on the operation force distribution lever 33 so as to be able to contact the above-mentioned initial joint surface 67. In this case, the joint plate portion 33d is bent from one flat plate portion 33a to the other flat plate portion 33b side at a position substantially corresponding to the connecting portion of the connecting rod 59 in the operation force distribution lever 33; the joint plate portion 33e is reversely bent from one flat plate portion 33a to the other flat plate portion 33b at a position substantially corresponding to the connecting portion of the front wheel brake cable 34 on the operating force distribution lever 33; and the engaging plate portion 33f is It is formed by bending toward the opposite side from the other flat plate portion 33b to the one flat plate portion 33a at a lower portion of the joining plate portion 33e.

The operating force distribution lever 33, when the interlocking brake lever 32 is in the non-operating state, makes each joint plate portion 33d, 33e, 33f in the position where it is in contact with the initial joint surface 67 of the housing 56, and corresponds to the position of the interlocking brake lever. 32 is operated to move the joint plate portions 33d, 33e, 33f away from the initial joint surface 67.

On the housing 56, a stop switch 68 is attached so that the detection head 68a faces the above-mentioned initial joint surface 67. When the interlocking brake lever 32 is not operated, the stop switch 68 is engaged with the engagement plate portion 33d of the operation force distribution lever 33. In the state on the initial joint surface 67, the joint plate part 33d is pressed into the state of the detection head 68a, and corresponding to the operation of the interlocking brake lever 32, the above joint plate part 33d is moved away from the initial joint surface by the operation force distribution lever 33 67, thereby releasing its pressure on the detection head 68a, and detecting the non-operation state and the operation state of the interlocking brake lever 32. At this time, since the area of the flat joint plate portion 33d is set relatively wide, even if the position of the operating force distribution lever 33 is somewhat shifted when the interlocking brake lever 32 is in the non-operating state, it can be ensured reliably. The detection head 68a of the stop switch 68 is in contact with the engagement plate portion 33d.

On the housing 56, a retaining device 70 capable of maintaining the braking force is configured, which maintains the tensioned state of the rear wheel brake cable 35 under the non-operation state of the interlocking brake lever 32, and makes the front wheel brake cable 34 In the non-tensioning action state, the braking force holding device 70 is provided with a braking force holding arm 71, an operating rod 72 and a return spring 73; When the force distribution lever 33 is in the action position, it moves between the engagement position where it engages with the operation force distribution lever 33 and the non-engagement position where it releases the engagement with the operation force distribution lever 33, and is accommodated in the housing 56; The power holding arm 71 is connected so that the braking force holding arm 71 can be manipulated from the outside of the housing 56;

The braking force holding arm 71 is constituted by an arm plate portion 74 , an arm plate portion 75 , a connecting plate portion 76 and an engagement pin 77 , wherein the arm plate portion 74 has a cylinder whose front end slides on the inside of the cover plate 58 of the housing 56 Shaped support tube 74a is integrated with the base and opposite to the inside of the cover plate 58; the arm plate portion 75 has a support hole 75a corresponding to the inner circumference of the above-mentioned support tube 74a on the base end portion and is spaced from the arm plate portion 74. Relatively; the connecting plate portion 76 connects one side of the middle portion of the two arm plate portions 74,75; the joint pin 77 is arranged across the front ends of the two arm plate portions 74,75, and the two arm plate portions 74,75 The distance between them is set to such an extent that the operation force distribution lever 33 can be sandwiched between the front ends of the arm plate portions 74 and 75 .

In the shell portion 57 of the housing 56, a shaft portion 78 whose front end contacts the inside of the cover plate 58 is integrally provided at a position close to the side wall 57a, and the shaft portion 78 is inserted into the support cylinder of the braking force holding arm 71. 74a and the support hole 75a, so that the braking force holding arm 71 is rotatably supported by the shaft portion 78. The return spring 73 is disposed between the braking force holding arm 71 and the shell portion 57 around the shaft portion 78 .

In the operating force distribution lever 33, on the two flat parts 33a, 33b at the end of the rear wheel brake cable 35 on the side where the distance from the connection part of the connecting rod 59 is small among the two brake cables 34, 35 Stoppers 79, 79 are provided, as shown in FIG. Engagement pin 77 of 71 engages.

The operating lever 72 is provided with a shaft portion 72a parallel to the shaft portion 58 of the casing 56 and fixed on the braking force holding arm 71, and an operating portion 72b disposed in front of the casing 56 and integrally connected with the shaft portion 72a. The shaft portion 72a of the operating lever 72 runs through the two arm plate portions 74, 75 of the braking force holding arm 71, and one end of the shaft portion 72a is welded on the arm plate portion 75, and the cover plate 58 is provided with a centering shaft portion 78 axis. An arc-shaped extended insertion hole 80 passes through the insertion hole 80 on the other end of the shaft portion 72a protruding forward from the housing 56, and is integrally connected with the interlocking brake lever 32 in front of the housing 56. The more forward operation part 72b.

In the front of the cover plate 58, that is, outside, it is in sliding contact with a rubber plate-shaped cover member 81 that can cover the insertion hole 80. The screw 83 screwed coaxially with the cover plate 58 is fastened between the spacer 82 outside the cover plate 58 and the cover plate 58 , and can rotate around the axis of the shaft portion 78 . The other end of the shaft portion 72a of the operating lever 72 is inserted and engaged on the cover member 81. When the operating lever 72 is manipulated to rotate the shaft portion 72a around the shaft portion 78 along the insertion hole 80, the cover member 81 is always It rotates around the axis of the shaft portion 78 constantly covering the insertion hole.

The operating portion 72b of the operating lever 72 protrudes outwards along the longitudinal direction of the steering handle 45 in front of the housing 56 and the interlocking brake lever 32, and the operating portion 72b of the operating lever 72 also extends from the steering handle. 45 and the opening 54 protruding from the handlebar cover 53 protruding from the left end of the interlocking brake lever 32 extends outward.

Returning to Fig. 1 again, the front wheel brake _BF is a disc brake, and the master oil cylinder 87 that outputs pressure fluid is connected to the front wheel brake _BF through the pipeline 88 corresponding to the pressing operation of the auxiliary operating lever 86.

Referring to Fig. 13 to Fig. 15 at the same time, the right end portion of the steering handle 45 is provided with a grip portion 89 for the right hand of the rider to hold, from the grip portion 89 to the inner side, the master oil cylinder 87 integrated with the fuel tank 90 is installed on the steering handle 45 . That is, on the master cylinder 87, a mounting portion 91 approximately in contact with the front half of the steering handle 45 is integrally provided, and a clamping member 92 in contact with approximately the rear half of the steering handle 45 is screwed on the mounting portion 91 by a pair of screws 93, 93. , And thereby the main oil cylinder 87 is assembled on the steering handle 45.

Referring to Fig. 16 to Fig. 18 together again, on the main oil cylinder 87, brackets 94, 95 are integrally arranged alternately up and down, with the base of the operable front wheel brake lever 31 and the auxiliary operating lever held by the right hand holding the grip portion 89 86 is rotatably supported on these brackets 94 , 95 via a pivot 96 .

The fulcrum 96 has a head 96a with an enlarged diameter at the upper end, and a threaded shaft portion 96c with a small diameter at the lower end through an engaging step portion 96b connected to the top of the bracket 95, the above-mentioned threaded shaft portion 96c passing through the fulcrum 96 of the bracket 94 from the bracket. 95 protrudes downwards, screw on the nut 97 on the protruding part of the threaded shaft part 96c protruding from the bracket 95, thereby fixing the fulcrum 96 on the brackets 94, 95, and in its fixed state, the enlarged diameter head 96a It is arranged at a position at a certain distance from the upper surface of the bracket 94 .

The auxiliary operating lever 86 is provided with a rotating plate portion 86a that is relatively rotatable by the base of the front wheel brake lever 31 and the fulcrum 96 between the above-mentioned two brackets 94, 95, and surrounds the bracket 95 cross section into a semicircle and rotates from The connecting portion 86b extending downward from the plate portion 86a, and the arm portion 86c whose lower end is connected to the connecting portion 86 and extends substantially parallel to the rotating plate portion 86a, are arranged on the connecting portion between the connecting portion 86b and the arm portion 86c. The circular opening 98 for nut tightening and loosening of the threaded shaft portion 96c can be performed.

Fig. 18 clearly shows that the piston 100 is slidably embedded in the main oil cylinder 87, and the oil pressure chamber 101 facing the front end face (the left end face of Fig. 18) of the piston 100 holds the piston 100 pressed to the rear side (Fig. 18). The spring 102 on the right side). The piston rod 100a that is coaxial with the piston 100 and is connected as one body protrudes from the rear end of the main oil cylinder 87, and a protective sleeve 103 covering the piston rod 100a is provided between the rear end of the piston rod 100a and the main oil cylinder 87. .

On the rotating plate portion 86a of the auxiliary operating lever 86, a pressing portion 104 that acts on the piston rod 100a with a pressing force and is in contact with the rear end of the piston rod 100a is integrally provided, and is provided on the base of the front wheel brake lever 31. An engaging portion 105 engageable with the pressing portion 104 described above. Corresponding to the braking operation of the front wheel brake lever 31, the engaging portion 105 is engaged on the pressing portion 104, and the operating force can be input from the pressing portion 104 to the above-mentioned piston rod 100a. In the operation state, the pressing portion 104 can press the piston rod 100a in a state where the engaging portion 105 of the front brake lever 31 is left aside by turning the auxiliary operation lever 86 .

Between the above-mentioned bracket 94 and the enlarged diameter head 96a, the return spring 106 that surrounds the fulcrum 96 and is a torsion spring is arranged between the front wheel brake lever 31 and the bracket 94, by means of the elastic force of the return spring 106, Give the front wheel brake lever 31 a force in the direction away from the grip portion 89, that is, the force in the direction in which the joint portion 105 is away from the pressing portion 104, in order to limit the rotation of the rotating end of the front wheel brake lever 31 due to the action of the return spring 106. The limiting surface 107 is set on the main oil cylinder 87 between the two brackets 94 , 95 . In the state where the front wheel brake lever 31 is in contact with the limit surface 107, the auxiliary operating lever 86 in the state of no external force is in the position of engaging the pressing part 104 on the engaging part 105 by means of the elastic force of the spring 102 in the main oil cylinder 87. in the retracted position.

The master cylinder 108 is mounted on the master cylinder 87 , and the detection portion 109 capable of contacting the detection head 108 a of the stop switch 108 is integrally provided on the connection portion 86 b of the auxiliary operation lever 86 . In the state where no external force is applied to the auxiliary operation rod 86, the detection part 109 is used to press the detection head 108a, and the piston rod 100a is pressed into the piston rod 100a by the pressing part 104. When the detection unit 109 releases the pressing force on the detection head 108a, the stop switch 108 can detect the non-operation state and the operation state of the auxiliary operation lever 86, that is, the non-operation state and the operation state of the front wheel brake _BF .

Referring now to Fig. 19 and Fig. 20 together, one end is connected to the other end of the front wheel brake cable 34 operated on the distributing lever 33, which can be controlled to be generated only by the front wheel brake B _F when the linkage brake lever 32 is operated. The braking force control device 110 for braking force is connected to the arm portion 86 c of the auxiliary operation lever 86 .

This braking force control device 110 is provided with the cable clip 111 that is fastened on the main oil cylinder 87, the cable connector 112 that can be connected to the wrist portion 86c of the operating rod 86 close to and away from the cable clip 111, and is located on the cable clip 111. Between 111 and the cable connector 112 is a limit spring 113 that makes the cable connector 112 generate elastic force toward the direction away from the cable clip 111 .

The cable clamp 111 is cylindrical with openings at both ends approximately parallel to the axis of the main oil cylinder 87 , and is fastened on the main oil cylinder 87 with a pair of screw parts 114 , 114 . A mounting hole 115 open to one end side of the cable clamp 111 and a spring receiving hole 116 open to the other end of the cable connector 112 side are coaxially provided on the cable clamp 111. Between the two holes 115, 116 there is a The cable clamp 111 is provided with a flange portion 117 protruding radially inward.

At the other end of the front wheel brake cable 34 , a threaded barrel 118 with external threads is fixed on the other end of the outer cable 34 a, and an adjusting nut 119 and a locking nut 120 are screwed on the threaded barrel 118 . Insert the threaded barrel 118 into the mounting hole 115 so that the adjusting nut 119 is in contact with one end of the cable clamp 111 . On the inner surface of the mounting hole 115, for example, flat joint surfaces 115a, 115a opposite to each other on a diameter line of the mounting hole 115 and extending along the axial direction are set, and the outside of the threaded cylinder 118 is provided opposite to these joint surfaces 115a, 115a. The flat joint surface 118a, 118a. Therefore, when the threaded barrel 118 is inserted into the mounting hole 115 , the threaded barrel 118 is prevented from rotating around the axis in the mounting hole 115 because the engaging surfaces 115 a , 115 a , 118 a , 118 a engage with each other.

When adjusting the serial length of the front wheel brake cable 34, although the advance and retreat positions of the adjusting nut 119 and the locking nut 120 along the axial direction of the threaded cylinder 118 are changed, the rotation around the axis of the threaded cylinder 118 embedded in the mounting hole 115 is prevented. , so it is not necessary to keep the outer cable 34a still when turning the adjusting nut 119 and the locking nut 120, and only need to rotate the adjusting nut 119 and the locking nut 120, so that the serial movement length adjustment operation of the front wheel brake cable 34 is easy to carry out .

The cable connector 112 has an end plate 112a opposite to the other end of the cable clamp 111 at one end, and a substantially U-shaped structure that clamps the front end of the wrist portion 86c of the auxiliary operating lever 86 at the other end. The side is provided with the elongated holes 121,121 that extend along the extension line of the axis of the cable clamp 111, by making it possible to move along these elongated holes 121,121, the connecting pins 122 whose two ends are connected with the two elongated holes 121,121 are formed. The cable connector 112 is connected to the wrist portion 8c of the auxiliary operation lever 86 .

On the other end of the front wheel brake cable 34, the inner cable 34b protruding from the other end of the outer cable 34a passes through the cable clamp 111 and protrudes toward the cable holder 112 side, and is provided at the other end of the inner cable 34b. The stop block 123 is engaged and connected to the end plate 112 a of the cable connector 112 .

The limit spring 113 is a coil spring surrounding the inner cable 34b. One end side of the limit spring 113 is received by the flange portion 117 to be accommodated in the spring receiving hole 116 of the cable clamp 111. The other end of the limit spring 113 is Then it is in contact with the end plate 112 a of the cable connector 112 .

And when the front wheel brake lever 31 and the interlocking brake lever 32 are both non-operational states, the connecting pin 122 is on the opposite end of the cable connector 112 end plate 112a of the long hole 121... A predetermined distance is set between the end plate 112a of the device 112 and the other end of the cable clamp 111.

In such a braking force control device 110, when the interlocking brake lever 32 is in a non-operated state, that is, when the front wheel brake lever 31 is braked without tension acting on the front wheel brake cable 34, as shown in FIG. As shown in 21, the engaging portion 105 of the front wheel brake lever 31 presses the pressing portion 104 to apply the pressing force to the piston rod 100a of the master cylinder 87, so that a braking force can be generated on the front wheel brake _BF , but at this time, The connecting pin 122 moves only along the elongated holes 121, . Thus, no matter whether the elastic force of the limiting spring 113 acts on the cable connector 112 or not, the elastic force of the limiting spring 113 will not act on the front wheel brake lever 31, so it can be used without interlocking braking device. The braking force of the front wheel brake _BF is obtained by the same effect when the front wheel brake lever of the existing two-wheeled motorcycle is operated.

When the brake operation of the interlocking brake lever 32 is performed while the front wheel brake lever 31 is in a non-operating state, the operation force distribution lever 33 corresponding to the operation of the interlocking brake lever 32 will be applied to the front wheel brake lever 32. Although the brake operating force also acts on the moving cable 34, the cable connector 112 will not move its end plate 112a toward the cable clamp 111 until the brake operating force exceeds the set load of the limit spring 113. , so that there will be no force action from the front wheel brake cable 34 on the auxiliary operating lever 86 . That is, at the initial stage of the braking operation of the interlocking brake lever 32, the force corresponding to the set load of the limit spring 113 does not act on the front wheel brake cable 34 before the operation force distribution lever 33 acts on it. On the master oil cylinder 87, thereby at the early stage of the operation of the interlocking brake lever 32, the exertion of the braking force of the front wheel brake _BF is suppressed.

When the force exceeding the set load of the limit spring 113 acts on the front wheel brake cable 34 from the operation force distribution lever 33, the inner cable 34b of the front wheel brake cable 34 pulls the cable connector 112 to make its end plate 112a Close to the cable clamp 111, so that the auxiliary operating lever 86 is driven to rotate to press the piston rod 100a with its pressing portion 104, so that the front wheel brake _BF exerts a braking force.

Then, as shown in FIG. 22, when the end plate 112a of the cable connector 112 abuts on the other end of the cable clamp 111, even if a larger brake operating force acts on the front wheel brake cable 34, due to The action of the cable connector 112 is limited, so the action of the auxiliary operating lever 86 is also limited, that is to say, with the operation of the interlocking brake lever 32, the upper limit of the braking force produced by the front wheel brake _BF is also controlled by the cable. The end plate 112a of the connector 112 contacts the cable clamp 111 and is restrained.

When the front wheel brake lever 31 is manipulated while the interlocking brake lever 32 is manipulated, as shown in FIG. 122 can move along the long hole 121..., and the front wheel brake lever 31 can be rotated by constantly pressing the pressing part 104 of the auxiliary operation lever 86 with the joint part 105, and the operation of the linkage brake lever 32 is performed on the front wheel brake B _F The braking force defined as the upper limit value of the braking force of the front wheel brake _BF is generated in the middle, and in this way, the operating force is input to the piston rod 100a of the master cylinder 87.

When the front wheel brake cable 34 is connected to the auxiliary operating lever 86 by the braking force control device 110, the stopper 123 at the end of the inner cable 34b is engaged with the cable connector 112 due to the constant compression of the limit spring 113. On the end plate 112a, so make the work complicated. Therefore, as shown in FIG. 24 and FIG. 25 , in order to keep the limit spring 113 in a compressed state before assembly to facilitate operation, a pair of positioning pins 126 , 126 are installed on the other end side of the cable clamp 111 .

For mounting these positioning pins 126 , 126 , two pairs of holes 125 , 125 ; 125 , 125 are provided on the other end side of the cable 111 parallel to one diameter thereof. The positioning pin 126 consists of a linear joint shaft portion 126a inserted into the corresponding holes 125, 125, a circular grip portion 126b connected to one end of the joint shaft portion 126a, and an outer peripheral elastic portion connected to the grip portion 126b and connected to the cable clamp 111. The contiguous wave-shaped engaging portion 126c is formed, and the engaging shaft portions 126a, 126a of the two positioning pins 126, 126 can receive a limit spring whose one end abuts against the flange portion 117 and is stored in the spring receiving hole 116 in a compressed state. 113 at the other end.

Install the positioning pins 126, 126 in this way so that the limit spring 113 is in a compressed state, the stopper 123 on the end of the inner cable 34b of the front wheel brake cable 34 is in contact with the end plate 112a of the cable connector 112, after the connection The two positioning pins 126, 126 are pulled out from the cable clamp 111, and the limit spring 113 is stretched to be in a state of being in contact with the end plate 112a of the cable connector 112, so that the front wheel brake cable is pulled by the braking force control device 110. 34 is connected to the operation on the auxiliary operation lever 86 to carry out easily.

Next, the effect of this embodiment will be described. When the interlocking brake lever 32 is in an unoperated state and only the front wheel brake lever 31 is braked, the auxiliary operation lever 86 engaged with the front wheel brake lever 31 is used to make the front wheel The wheel brakes _BF are activated as the master cylinder 87 is pressed, and braking force is generated in the front wheel brakes _BF .

When the interlocking brake lever 32 is braked without operating the front wheel brake lever 31, the operating force of the interlocking brake lever 32 is used to move the operating force distribution lever 33 to the action position, which is distributed by the operating force. The rod 33 pulls the front wheel brake cable 34 and the rear wheel brake cable 35 at the same time. At this time, the front wheel brake cable 34 is connected to the master cylinder 87 capable of applying a pressing force to the main oil cylinder 87 through the brake force control device 110 that can be controlled so that only the front wheel brake _BF generates braking force when the interlocking brake lever 32 is operated. On the auxiliary operation lever 86 on the top, the brake force control device 110 can suppress the braking force of the front wheel brake _BF at the initial stage of the brake operation of the linkage brake lever 32, and can control the braking force of the front wheel with the action of the linkage brake lever 32 The upper limit value of the braking force of the front wheel brake B _F is limited. Furthermore, by setting the distance L _F between the connection position of the linkage brake lever 32 on the operation force distribution lever 33 and the connection position of the front wheel brake cable on the operation force distribution lever 33 to be greater than that of the linkage brake The simple structure of the distance LR between the connecting position of the rod 32 on the operating force distribution rod 33 and the connecting position of the rear wheel brake cable 35 on the operating force distribution rod 33 can make the operating force distribution rod 33 act on the rear wheel braking system. The brake operation force on the moving cable 35 is greater than the brake operation force that the lever acts on the front wheel brake cable 34 .

Then, the braking force distribution characteristic corresponding to the operation of the interlocking brake lever 32 becomes as shown in FIG. , and the increased part of the load shared by the front wheels is compensated by the load of the passenger, so a good feeling of sinking the front of the brake car can be obtained, and the sinking of the front part of the brake car at the initial stage of operation of the interlocking brake lever 32 can be properly controlled quantity.

Since the front wheel brake _BF starts to generate the braking force, the braking force of the rear wheel brake _BR is greater than the braking force of the front wheel brake _BF , which can avoid the two-wheeled motorcycle with no interlocking braking device in the prior art. Only by manipulating the rear wheel brake lever to make the brake operation feeling change when the rear wheel brake operates, the application range of the interlocking brake device to existing two-wheeled motorcycles can be expanded.

Furthermore, by limiting the upper limit of the braking force generated by the front brake _BF in association with the operation of the interlocking brake lever 32, when the operation amount of the interlocking brake 32 becomes large, an increased braking force of the rear brake _BR can be obtained. , so the braking force of the front wheel brake B _F can be suppressed to obtain a suitable sinking amount of the front part of the braked vehicle.

In this way, since the brake force control device 110 is used to control the braking force produced by the front wheel brake _BF when the interlocking brake lever 32 is operated, the braking effect and feeling produced by the operation of the front wheel brake lever 31 can be maintained, and the front wheel brake lever 31 can be controlled to control the braking force produced by the front wheel brake lever 31. By adjusting the wheel braking force to control the proper sinking of the front part of the braked car, the riding feeling can be improved.

Since the diameter of the rear wheel brake cable 35 that transmits a large brake operation force from the operation force distribution lever 33 is larger than the diameter of the front wheel brake cable 34 with a smaller brake operation force, the traction action amount is large. The rigidity of the rear wheel brake cable 35 is greater than that of the front wheel brake cable 34 with less traction action, so that the expansion and contraction of the two brake cables 34, 35 can be adapted to its traction action, and the operating force The amount of movement of the distribution lever 33 is appropriate.

When the braking force maintaining device 70 is actuated, the operation lever 72 is turned while the interlocking brake lever 32 is operated. In this way, as shown in FIG. 12, the braking force holding arm 71 moves from the disengagement position to the engaging position against the elastic force of the return spring 73, and the engagement pin 77 of the braking force holding arm 71 is engaged in the moving action. Position of the operating force distribution lever 33 on the stopper 79,79. Once the operating force of the interlocking brake lever 32 is released, the operating force distribution lever 33 acts to become the braking force holding position where the rear wheel brake cable 35 is in a traction state and the front wheel brake cable 34 is in a non-traction state. In this state, only the rear brake _BR is activated and the front brake _BF is not activated. Such a braking force holding state is detected by the stop switch 68 . That is, when the braking force is maintained, rubber parts such as pipes and seals, which are components of the hydraulic front wheel brake _BF , are not subjected to hydraulic pressure, so it is expected to increase the life of the rubber parts.

The aforementioned stoppers 79 and 79 are provided on the operating force distribution lever 33 , and the brake cable whose distance from the connection part of the interlocking brake lever 33 is smaller between the front wheel brake cable 34 and the rear wheel brake cable 35 , that is, the rear brake cable. On one side of the wheel brake cable 35, the engaging pin 77 of the braking force holding device 70 is engaged on the operating force distribution lever 33 corresponding to the relatively large side of the operation of the interlocking brake lever 32, so that the braking force holding device 70 can The operation amount of the interlocking brake lever 32 during operation is small.

In order to release this braking force holding state, as long as the interlocking brake lever 32 is rotated, the braking force holding arm 71 is moved from the engaged position to the non-engaged position under the elastic force of the return spring 73 and the brake force is released. In the engagement state of the braking force holding device 71 and the operating force distribution lever 33, since the interlocking brake lever 32 is restored, the operating force distribution lever 33 returns to the non-operating position, and the rear wheel brake _BR becomes a resting state.

Moreover, since the operating rod 72 as a constituent element of the braking force holding device 70 protrudes from the fixed housing 56, and makes the left end grip portion 46 of the steering handle 45 protrude from the interlocking brake lever 32, it becomes from the device. In the structure that the opening 54 on the handlebar cover 53 protrudes outwards, the handlebar cover 53 may not be provided with an opening specially used for disposing the operating lever 72, and there is no need to replace a two-wheeled motorcycle without an interlocking braking device. The handlebar cover 56 on the car can be applied to the interlocking brake device. Not only that, it is not necessary to set up the handlebar cover 53 except for the grip portion 46 of the steering handle 45 and the opening for the interlocking brake lever 32. 54, which enables the handlebar cover 53 to have the same elegant appearance as in the past.

The above-mentioned operating force distribution rod 33 can be movably fixed on the inner side of the interlocking brake lever 32 along the longitudinal direction of the steering handle 45 on the steering handle 45, so that the interlocking brake The moving rod 32 is close to the operating force distribution rod 33, and the interlocking brake rod 32 and the operating force distribution rod 33 can be directly connected with a highly rigid connecting rod 59 that does not need to be adjusted. In this way, the initial adjustment between the interlocking brake lever 32 and the operating force distribution lever 33 can be omitted, and adjustment deviation between the interlocking braking lever 32 and the operating force distribution lever 33 can be prevented, which can be expected to improve The adjustment accuracy of linkage braking force.

The above-mentioned housing 56 is fixedly disposed on the front side of the steering handle 45 in a state where the front brake cable 34 and the rear brake cable 35 are separated vertically and connected to the operation force distribution lever 33, and is formed along the vertical direction. In the limited space on the left end side of the steering handle 45, the longitudinally long housing 56 whose length in the direction is greater than the length in the front and rear direction of the motorcycle can not affect the operation of the steering handle 45 and can be combined with the covering steering handle 45. The housing 56 is effectively arranged without interfering with the handlebar cover 53 . In addition, since the housing 56 is constituted with the housing 57 integrated with the gripper 47 mounted on the steering handle 45 as a structural element, the housing 56 can be constituted with fewer parts, and Since the holder 47 is assembled on the steering handle 45 and a part of the housing 56 is assembled on the steering handle 45, its assembly performance can be improved.

Furthermore, since the housing 56 formed elongatedly is arranged in front of the steering handle 45, the operation lever 72 of the braking force holding device 70 protruding from the front of the housing 56 is arranged on the front side of the interlocking brake lever 32. And constitute, even if handlebar cover 53 is set relatively small to the bulging amount of steering handle 45 front side, also can wrap housing 56 and operating rod 72 with handlebar cover 53, so can avoid handlebar cover The increase in the size of the cover 53 increases the degree of freedom in the design of the handlebar cover 53 .

Since the housing 56 is provided with an initial engagement surface 67 that abuts against the operating force distribution rod 33 accommodated in the housing 56 when the interlocking brake lever 32 is not in operation, In the operating state, making the operating force distribution lever 33 abut against the initial joint surface 67 of the housing 56 can avoid the mutual influence between the front wheel and rear wheel brake cables 34, 35, and each brake cable 34 can be operated independently. , 35 tension setting, the tension setting of two braking cables 34,35 is easy to carry out.

In the above, although the embodiments of the present invention have been described in detail, the present invention is not limited to the above embodiments, and various design changes can be made without departing from the scope of the claims.

For example, in the above-mentioned embodiment, the connecting rod 59 connected with the interlocking brake rod 32 is connected to the central part of the operating force distribution rod 33, and the front wheel brake cable 34 and the rear wheel brake cable 35 are connected at the central part of the operating force distribution lever 33. The distance between the two sides of the connecting rod 59 is different from each other, but it is also possible to rotatably connect the parts connected to the interlocking brake rod 32 to the other end of the operating force distribution rod whose one end is supported on the housing 56, and the front The wheel and rear wheel brake cables 34, 35 are connected to positions on the operating force distribution lever at different distances from the components. Furthermore, the rear wheel brake cable 35 is connected to a position far away from the connection point of the interlocking brake lever 32 on the operating force distribution lever, and the front wheel brake cable 34 is connected to the above-mentioned connection point on the operating force distribution lever. The closer position enables the brake operation force on the front brake cable 34 side to be larger than the brake operation force on the rear brake cable 35 side.

If the invention described in the above-mentioned scheme 1 is used, the interlocking brake lever is adjacent to the operating force distribution lever, so the interlocking braking lever and the operating force distribution lever can be directly connected by a high-rigidity part that does not need to be adjusted. The initial adjustment between the brake lever and the operating force distribution lever can also be omitted, and it can also prevent the adjustment deviation between the interlocking brake lever and the operating force distribution lever, and it is expected to improve the adjustment accuracy of the interlocking braking force.

In the invention described in claim 2, the vertically elongated housing whose length in the up and down direction is greater than the length in the front and rear direction of the motorcycle can be formed, and in the limited space on one end side of the steering handle, it can be used without affecting the operation of the steering handle and compatible with the covering. The housing is effectively arranged without interference with the handlebar cover of the steering handle.

In the invention described in scheme 3 or 4, the braking force maintaining device can be installed on the casing without having to provide a special opening for disposing the operating rod of the braking force maintaining device on the handlebar cover, and there is no need to replace the non-interlocking braking device The handlebar cover on the two-wheeled motorcycle can be adapted to the new interlocking brake device, and there is no need to set the handlebar cover on the handlebar cover except for the opening for one end of the steering handle and the above-mentioned interlocking brake lever. The opening part of the handlebar cover makes the appearance of the handlebar cover as elegant as compared with the past.

In the invention described in claim 5, the number of parts can be reduced, and assembly performance can be improved by assembling a part of the housing to the steering handle by assembling the clamper to the steering handle.

Furthermore, in the invention described in Claim 6, since the amount of protrusion of the handlebar cover toward the front side of the steering handle is small, the handlebar cover can be used to cover the casing and the operating lever, and the handlebar cover can be prevented from being enlarged. , Improve the degree of freedom in the design of the handlebar cover.

In the invention described in claim 7 as described above, since the braking force control device can be used to control the braking force to be generated only in the front wheel brakes when the interlocking brake lever is operated, it is possible to maintain The resulting braking effect and feeling can control the braking force of the front wheel when operating the linkage brake lever, and properly control the sinking of the front of the braked vehicle to improve the riding experience.

The invention described in the scheme 8 can obtain a large rear wheel braking force and suppress the front wheel braking force when the interlocking brake lever is operated largely, so the sinking amount of the front part of the brake car can be made suitable.

In the invention described in claim 9, by suppressing the braking force generated by the front wheel brake at the initial stage of the operation of the interlocking brake lever, and only the braking force on the rear wheel side causes the front part of the braked vehicle to sink at the initial stage of the operation of the interlocking brake lever. phenomenon, and the weight of the rider compensates for the increased load shared by the front wheels, so a good feeling of sinking of the front of the braked vehicle can be obtained, and the amount of sinking of the front of the vehicle generated by the initial operation of the linkage brake lever can be controlled as Appropriate amount.

In the invention described in claim 10, only by means of a simple structure in which the two brake cables are connected to the operation force distribution rod with different distances from the connecting position of the interlocking brake rod on the operation force distribution rod, When the interlocking brake lever is operated, the braking force of the front wheel and rear wheel brakes is different, and the braking operation feeling is not changed much compared with the past, and it can be applied to the existing two-wheeled motorcycle without the interlocking brake device .

In the invention described in claim 11, the rigidity of the brake cable on the side with a large braking operation force, that is, the side with a large traction action amount, is greater than that on the side with a small braking force, that is, the brake cable on the side with a small traction action amount. The rigidity can make the expansion and contraction of the brake cable adapt to the traction action, and make the action of the operating force distribution lever the optimum amount.

In the invention described in claim 12, the braking force holding device is engaged with the operating force distribution lever on the side where the operation of the interlocking brake lever is relatively large, so that the interlocking braking when the braking force holding device operates The operating amount of the lever becomes relatively small.

However, in the invention described in claim 13, in the non-operating state of the interlocking brake lever, the operating force distribution lever can be joined to the joint surface of the housing, so that the mutual influence of the two brake cables can be avoided, so that the two brake cables can be respectively Setting the tension of each brake cable makes it easy to set the tension of the brake cable.

Claims (11)

1. apparatus for joint braking front and back wheels of motor bicycle, it is provided with: make front-wheel brake (B _F) send the front wheel brake bar (31) of braking force; Be bearing on the clamper (47) of an end of being fixed in steering tiller (45), with front-wheel brake (B rotatable _F) and rear wheel brake (B _R) interlock, the interlock brake rod (32) of generation braking force; Brake operation force is passed to front-wheel and rear wheel brake (B respectively separately _F, B _R) rope stopper (34,35); With above-mentioned interlock with the brake operating of brake rod (32) accordingly, can draw above-mentioned two rope stoppers (34,35) respectively, connect above-mentioned interlock with the operating effort feed rod (33) of brake rod (32) with two rope stoppers (34,35); But the place of working holds the stationary housing (56) of this operating effort feed rod (33); And the handle cover that covers above-mentioned steering tiller; It is characterized in that: at length direction and above-mentioned interlock above-mentioned housing of configuration on the brake rod adjoining position along steering tiller, above-mentioned two rope stoppers (34,35) under the state that is connected along car body above-below direction position spaced on the aforesaid operations power feed rod (33), above-mentioned housing (56) is configured in the front side of the car body of above-mentioned steering tiller (45), covers by above-mentioned handle cover simultaneously.

2. described in claim 1, two take turns the motor front and rear interlinked brake device, it is characterized in that: with above-mentioned two rope stoppers (34,35) at least one side in remains on the braking force holder (70) of drawing-in motion state, control lever (72) as the inscape of this braking force holder (70) is set on this housing (56) from above-mentioned housing (56) with stretching out, cover above-mentioned steering tiller (45) with the handlebar cover cap (53) with peristome (54) that the end that makes above-mentioned steering tiller (45) and above-mentioned interlock brake rod (32) stretch out, aforesaid operations bar (72) is protruding from above-mentioned peristome (54).

3. apparatus for joint braking front and back wheels of motor bicycle as claimed in claim 1 or 2 is characterized in that: the part of above-mentioned housing (56) and above-mentioned clamper (47) form one.

4. apparatus for joint braking front and back wheels of motor bicycle as claimed in claim 2, it is characterized in that: length is configured in the front side of steering tiller (45) greater than the above-mentioned housing (56) of the lengthwise that forms along two-wheeled motorcycle fore-and-aft direction length along the vertical direction, and outstanding aforesaid operations bar (72) is configured in the front side of above-mentioned interlock brake rod (32) from this housing (56) front.

5. the apparatus for joint braking front and back wheels of motor bicycle described in claim 1, it is characterized in that: it is provided with gradual braking device (110), only when operation interlock brake rod (32) control by above-mentioned front-wheel brake (B _F) braking force that sends.

6. the apparatus for joint braking front and back wheels of motor bicycle described in claim 5 is characterized in that: above-mentioned gradual braking device (110), follow the operation of interlock brake rod (32), and can limit above-mentioned front-wheel brake (B _F) higher limit of the braking force that sends.

7. the apparatus for joint braking front and back wheels of motor bicycle described in claim 5 or 6 is characterized in that: above-mentioned gradual braking device (110), can suppress above-mentioned front-wheel brake (B at the operation initial stage of above-mentioned interlock brake rod (32) _F) the performance of braking force.

8. the apparatus for joint braking front and back wheels of motor bicycle described in claim 1, it is characterized in that: for operation corresponding to above-mentioned interlock brake rod (32), make the brake operation force of distributing to two rope stoppers (34,35) from operating effort feed rod (33) different mutually,, on the mutually different position of distance of the connection location of operating effort feed rod (33), two rope stoppers (34,35) are connected on the aforesaid operations power feed rod (33) at the above-mentioned interlock brake rod of distance (32).

9. the apparatus for joint braking front and back wheels of motor bicycle described in claim 8, it is characterized in that: in two rope stoppers (34,35), the diameter that the brake operation force that is produced by aforesaid operations power feed rod (33) becomes the rope stopper (35) of a big side sets that to become the diameter of a little side rope stopper (34) than above-mentioned brake operation force big for.

10. the apparatus for joint braking front and back wheels of motor bicycle described in claim 8 or 9, it is characterized in that: two rope stoppers (34,35) in, in rope stopper (35) one sides from the little side of the connecting portion distance of above-mentioned interlock brake rod (33), be provided with retainer (79) in aforesaid operations power feed rod (33) end, but clutch the braking force holder (70) that engages with this retainer (79) is located on the housing (56), with state that above-mentioned retainer (79) combines under, an above-mentioned side's rope stopper (35) is remained on the drawing-in motion state, and the opposing party's rope stopper (34) then is non-drawing-in motion state.

11. the apparatus for joint braking front and back wheels of motor bicycle described in claim 1 is characterized in that: operating effort feed rod (33) can be in position that the initial engagement face (67) be located at above-mentioned housing (56) on of above-mentioned interlock brake rod (32) during for non-operating state engages, and leave corresponding to the operation of above-mentioned interlock brake rod (32) between the position of above-mentioned initial engagement face (67) and move.

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