JP2014196019A - Brake device for bar handle vehicle - Google Patents

Abstract

An object of the present invention is to improve the operational feeling when a mechanical brake and a hydraulic brake are operated in conjunction with each other via a master cylinder unit by operating a brake pedal. A master cylinder unit includes a hydraulic master cylinder, a first rotation lever, a second rotation lever, and an equalizer lever. The equalizer lever traction means connected to the brake pedal 5 is formed by the equalizer lever traction rod 10, and the mechanical brake traction means is formed by the mechanical brake traction rod 11. The equalizer lever 24 connects the mechanical brake traction rod 11 to one end, the second rotation lever 23 to the other end, and the equalizer lever traction rod 11 to the intermediate portion. [Selection] Figure 1

Description

  The present invention relates to a brake device for a bar handle vehicle, and more specifically, one of a front wheel brake and a rear wheel brake is a hydraulic brake and the other is a mechanical brake, and the hydraulic brake is independently operated by operating an operation lever. The present invention relates to a brake device for a bar handle vehicle that is actuated to operate a hydraulic brake and a mechanical brake in conjunction with each other by operating a brake pedal.

  Conventionally, as a brake device for a bar handle vehicle, a hydraulic brake is independently operated via a master cylinder unit by operating a first brake operator, and via a master cylinder unit by operating a second brake operator. In some cases, a hydraulic brake and a mechanical brake are operated in conjunction with each other. This master cylinder unit includes a combination of a master cylinder and a lever mechanism. The lever mechanism includes a first rotation lever, a second rotation lever, and an equalizer lever, and is rotated by the operation of the first brake operator. The hydraulic brake is operated via the knocker by the first rotating lever, and the hydraulic brake and the mechanical type are operated via the knocker by the equalizer lever and the second rotating lever that are rotated by the operation of the second brake operator. Some work in conjunction with the brake. Moreover, there existed what applied the brake device using the above master cylinder units to what operated a rear-wheel brake with a brake pedal (for example, refer patent document 1).

JP 2006-1111030 A

  However, in the thing of the above-mentioned patent document 1, since the equalizer lever and the brake pedal are connected by traction means such as a brake wire, the handling of the wire becomes complicated, and the operation feeling on the brake pedal side becomes complicated. Was not good.

  Accordingly, the present invention provides a bar handle vehicle brake device that improves operation feeling when a mechanical brake and a hydraulic brake are operated in conjunction with each other via a master cylinder unit by operating a brake pedal. The purpose is to do.

  In order to achieve the above object, the brake device for a bar handle vehicle according to the present invention operates a control lever attached to a handlebar, with either a front brake or a rear brake serving as a hydraulic brake and the other as a mechanical brake. The master cylinder can be operated by operating a brake pedal that rotates about a fixed shaft by operating the hydraulic brake independently through a master cylinder unit formed by combining a hydraulic master cylinder and a lever mechanism. The mechanical brake and the hydraulic brake are operated in conjunction with each other via a unit, and the master cylinder unit includes a hydraulic master cylinder that supplies hydraulic pressure to the hydraulic brake, and a first rotation lever. And a second rotation lever and an equalizer lever, and by operating the operation lever When the first rotation lever is rotated and the piston of the hydraulic master cylinder is pushed, the hydraulic brake is operated independently, and the brake pedal is operated to connect to the brake pedal. The equalizer lever is pulled through the equalizer lever pulling means, and the mechanical brake pulling means is pulled through the equalizer lever to operate the mechanical brake, and further through the equalizer lever. In the bar handle vehicle brake device, the piston is pushed by rotating the second rotation lever, the hydraulic master cylinder is operated, and the hydraulic brake is operated in conjunction with the hydraulic brake. The equalizer lever traction means is formed by an equalizer lever traction rod, and the mechanical brake The pulling means is formed by a mechanical brake traction rod, and the equalizer lever has one end portion, the mechanical brake traction rod, the other end portion, the second rotation lever, and an intermediate portion. It is characterized by connecting lever pull rods.

  Further, it is preferable that the master cylinder unit is disposed directly above the equalizer lever pulling rod. Further, the front wheel brake is the hydraulic brake, the rear wheel brake is the mechanical brake, and the hydraulic master cylinder has a central axis directed in the vehicle longitudinal direction and an output side directed forward of the vehicle. Arrangement is preferred. Further, the second rotating lever and the equalizer lever may be formed integrally.

  According to the bar handle vehicle brake device of the present invention, the equalizer lever traction means connected to the brake pedal is formed by the equalizer lever traction rod, and the mechanical brake traction means is formed by the mechanical brake traction rod. By connecting the mechanical brake traction rod to one end of the equalizer lever, the second rotating lever to the other end, and the traction rod for the equalizer lever to the middle, respectively, The ring can be improved.

  Further, since the master cylinder unit is arranged directly above the equalizer lever pulling rod, the master cylinder unit can be easily arranged on the vehicle body. Furthermore, the front wheel brake is a hydraulic brake, the rear wheel brake is a mechanical brake, and the hydraulic master cylinder is arranged with the central axis facing the vehicle front-rear direction and the output side facing the vehicle front. Easy to handle hydraulic piping to the side. Further, by integrally forming the second rotation lever and the equalizer lever, it is possible to reduce the number of parts and improve the assembling property.

It is the schematic of the brake device for vehicles which shows one example of this invention. It is a partial cross section front view of a master cylinder unit similarly. It is the schematic which shows the state which similarly attached the brake device for vehicles to the vehicle body. It is the partial cross section front view of the master cylinder unit of the state which operated the operation lever similarly. FIG. 5 is a partial cross-sectional front view of the master cylinder unit in a state where the brake pedal is also started to be operated. It is a partial cross section front view which shows the master cylinder unit of the state which similarly operated the brake pedal and act | operated the hydraulic brake to the maximum. It is a partial cross section front view which shows the master cylinder unit of the state which similarly actuated the brake pedal and actuated the mechanical brake to the maximum. Similarly, it is a partial cross-sectional front view showing the master cylinder unit in a state where the operation lever and the brake pedal are operated to operate the hydraulic brake and the mechanical brake to the maximum.

  1 to 8 show an embodiment of the present invention. As shown in FIG. 1, a brake device 1 for a bar handle vehicle according to this embodiment includes a front wheel brake 2, a rear wheel brake 3, and a front wheel. A brake operation lever 4 and a rear wheel brake pedal 5 are provided, and a master cylinder unit 20 is interposed between the front wheel brake 2, the operation lever 4, the rear wheel brake 3 and the brake pedal 5. ing.

  As the front wheel brake 2, a hydraulic disk brake is used in which a disk rotor 2a that rotates integrally with the front wheel is combined with a caliper body 2b having a piston. In the rear wheel brake 3, a pair of brake shoes 3b and 3b are disposed opposite to the back plate 3a so that the brake shoes 3b and 3b can be expanded. A mechanical drum brake that expands to a fulcrum is used, and both brake shoes 3b, 3b are constantly urged in the direction of diameter reduction by shoe return springs 3f, 3f.

  The operation lever 4 is attached to the handle bar 6, and by operating the operation lever 4, the brake wire 7 is pulled to operate the hydraulic master cylinder 21 of the master cylinder unit 20, and through the hydraulic pipe 8. Thus, hydraulic pressure is supplied to the front wheel brake 2 to operate the front wheel brake 2 alone.

  The brake pedal 5 is rotatably provided on the vehicle body via a fixed shaft 9. By operating the brake pedal 5, the equalizer lever traction rod 10 is pulled and the rear wheel is connected via the master cylinder unit 20. The mechanical brake traction rod 11 for operating the brake 3 is pulled to operate the rear wheel brake 3, and the hydraulic master cylinder 21 of the master cylinder unit 20 is operated to operate the front wheel brake via the hydraulic pipe 8. 2 is supplied with hydraulic pressure, and the front wheel brake 2 is operated in conjunction.

  The master cylinder unit 20 includes the hydraulic master cylinder 21 that supplies hydraulic pressure to the front wheel brake 2, a first rotation lever 22, a second rotation lever 23, and an equalizer lever 24. The hydraulic master cylinder 21 is accommodated in the body main body 21a, and the piston 21c protrudes from one side surface 21b of the body main body 21a. Further, a pair of lever mounting brackets 21d and 21d that pivotably mount the first rotating lever 22 and the second rotating lever 23 project from one end side of the one side surface 21b of the body main body 21a. A rotation restricting portion 21e that restricts the amount of rotation of the second turning lever 23 protrudes from the other end surface that is continuous with the other end of 21b. The rotation restricting portion 21e has a guide hole for the brake wire 7. 21f is provided.

  The first rotation lever 22 is formed in a substantially W-shaped curve, and a first rotation base portion 22a formed in a bifurcated arm shape disposed between the lever mounting brackets 21d and 21d on the base end side. Are provided with a brake wire connecting portion 22b for connecting the brake wire 7 at the distal end side, and a master cylinder actuator 22c for operating the hydraulic master cylinder 21 by pushing the piston 21c at the center portion. Further, a contact surface 22d that contacts the first rotation lever pusher 23c formed on the second rotation lever 23 is formed on the surface facing the master cylinder actuator 22c.

  The second rotation lever 23 is formed in a substantially W-shaped curve, and a second rotation base 23a inserted between the first rotation base 22a having a bifurcated arm shape is provided at the central portion on the base end side. An equalizer lever connecting portion 23b for rotatably connecting the equalizer lever 24 is provided on the outer side, and the first rotating lever pusher 23c for pressing the first rotating lever 22 is provided on the inner side of the center portion. Further, on the distal end side, there is a first restriction piece 23d that abuts against the rotation restricting portion 21e and restricts the second turning lever 23 from turning more than a predetermined amount in the first turning lever pressing direction. The base end side is provided with second restricting pieces 23e that abut against the body main body 21a and restrict the amount of rotation of the second turning lever 23 in the direction opposite to the first turning lever.

  The equalizer lever 24 is provided with a second rotating lever connecting portion 24a that is rotatably connected to the second rotating lever 23 by a rotating shaft 25 at the base end portion, and a mechanical brake pulling rod at the distal end portion. 11 is connected to the equalizer lever connecting portion 23b on the base end side, and the first rod connecting portion 24b is connected to the central portion, and the second rod connecting portion 24c is connected to the equalizer lever pull rod 10. The equalizer lever 24 is provided with a stopper portion 24d for suppressing the mechanical brake traction rod 11 from rotating in the anti-traction direction.

  The first rotation lever 22 and the second rotation lever 23 include a pair of lever mounting brackets 21d and a bifurcated arm-shaped first rotation base portion 22a into which a plate-shaped second rotation base portion 23a is inserted. , 21d, and the pivot shaft 26 is inserted across the lever mounting bracket 21d, the first pivot base 22a and the second pivot base 23a, so that the first pivot lever 22 and the lever mount bracket 21d A second rotation lever 23 is attached to each other so as to be rotatable. Further, the brake wire connecting portion 22b of the first turning lever 22 is connected to the end portion of the brake wire 7 inserted through the guide hole 21f of the turning restricting portion 21e. Further, the second turning lever connecting portion 24a of the equalizer lever 24 is connected to the equalizer lever connecting portion 23b of the second turning lever 23, and the equalizer rod traction rod 10 is connected to the second rod connecting portion 24c of the equalizer lever 24. However, the mechanical brake traction rod 11 is connected to the first rod connecting portion 24b. As shown in FIG. 3, when the brake device 1 formed as described above is mounted on a vehicle, the master cylinder unit 20 is located near the fixed shaft 9 of the brake pedal 5 and an equalizer lever. The hydraulic master cylinder 21 is disposed directly above the traction rod 10 and the central axis CL1 is directed in the longitudinal direction of the vehicle body, and the connection side (output side) of the hydraulic pipe 8 is directed forward of the vehicle body.

  When the master cylinder unit 20 is in an inoperative state, as shown in FIGS. 1 and 2, the first rotating lever 22 is in a state in which the master cylinder operator 22 c is in contact with the piston 21 c of the hydraulic master cylinder 21. The second rotation lever 23 is held in a state where the body main body 21a and the second restriction piece 23e are in contact with each other, and between the contact surface 22d and the first rotation lever pusher 23c. A gap (clearance) is formed, and the first restricting piece 23d is located away from the rotation restricting portion 21e. Further, since the brake shoes 3b, 3b of the rear wheel brake 3 are urged in the diameter reducing direction by the shoe return springs 3f, 3f, the cam shaft 3d and the cam lever 3c are urged in the non-operating direction. Therefore, the mechanical brake traction rod 11 is pulled to the rear wheel brake 3 side, and accordingly, the equalizer lever 24 is in a state where the stopper portion 24d is in contact with the equalizer lever connecting portion 23b. Is held by.

  In the brake device 1 formed as described above, when the operation lever 4 is operated, the brake wire 7 pulls the brake wire connecting portion 22b of the first rotation lever 22 as shown in FIG. As a result, the first rotation lever 22 rotates about the first rotation base 22a, and the master cylinder operator 22c pushes the piston 21c of the hydraulic master cylinder 21. Thereby, the hydraulic fluid whose pressure has been increased supplies hydraulic pressure to the front wheel brake 2 via the hydraulic pressure pipe 8 and operates the front wheel brake 2 alone.

  When the brake pedal 5 is operated, first, as shown in FIG. 5, the equalizer lever traction rod 10 pulls the equalizer lever 24 to keep the stopper portion 24d and the equalizer lever connecting portion 23b in contact with each other. While the second rotation lever 23 rotates around the second rotation base 23a, the mechanical brake traction rod 11 is pulled and the rear wheel brake 3 starts to operate. As a result, the second rotation lever 23 rotates about the second rotation base 23a, and the clearance between the first rotation lever pusher 23c and the contact surface 22d becomes narrower. Go.

  Further, when the brake pedal 5 is operated, as shown in FIG. 6, the second rotating lever 23 is further rotated while the stopper portion 24d and the equalizer lever connecting portion 23b are kept in contact with each other. The type brake pulling rod 11 is pulled to actuate the rear wheel brake, and the first rotation lever pusher 23c comes into contact with the contact surface 22d to rotate the first rotation lever 22. Accordingly, the master cylinder operator 22c pushes the piston 21c of the hydraulic master cylinder 21 to operate the front wheel brake 2 in conjunction with it. Further, when the first restricting piece 23d of the second turning lever 23 comes into contact with the turning restricting portion 21e, the turning amount of the second turning lever 23 is restricted, so that the turning of the first turning lever 22 is performed. Stops, and braking of the front wheel brake 2 is restricted.

  As shown in FIG. 7, when the brake pedal 5 is operated more strongly, the second rotation lever 23 holds the state where the first restriction piece 23d is in contact with the rotation restriction portion 21e, and only the equalizer lever 24 is Further, the mechanical brake pulling rod 11 is pulled and the rear wheel brake 3 is operated more strongly.

  Further, as shown in FIG. 8, when the brake pedal 5 and the operation lever 4 are strongly operated simultaneously, the first rotation lever 22 is pulled independently by being pulled by the brake wire 7 and the piston 21c is moved. By pushing and actuating the front wheel brake 2 strongly, the equalizer lever 24 pulled by the equalizer lever traction rod 10 causes the second restricting lever 23 to restrict the first restricting piece 23d as described above. After being in contact with the portion 21e, only the equalizer lever 24 is tilted, the mechanical brake traction rod 11 is pulled, and the rear wheel brake is operated.

  Further, for example, even if a malfunction occurs in the hydraulic master cylinder 21 and the first rotation lever 22 cannot receive the reaction force from the piston 21c of the hydraulic master cylinder 21, the brake pedal 5 is By operating, the mechanical brake traction rod 11 can be pulled and the rear wheel brake 3 can be braked, and the stroke amount of the brake pedal 5 is not changed.

  In this embodiment, as described above, the equalizer lever traction means connected to the brake pedal 5 is formed by the equalizer lever traction rod 10, and the mechanical brake traction means is formed by the mechanical brake traction rod 11. By connecting the mechanical brake traction rod 11 to one end of the equalizer lever 24, the second rotating lever 23 to the other end, and the equalizer lever traction rod 10 to the intermediate portion, the pedal side The operational feeling can be improved.

  Further, since the master cylinder unit 20 is disposed in the vicinity of the fixed shaft 9 of the brake pedal 5 and immediately above the equalizer lever traction rod 10, the master cylinder unit 20 can be easily disposed on the vehicle body. Further, the front wheel brake 2 is a hydraulic brake and the rear wheel brake 3 is a mechanical brake. The hydraulic master cylinder 21 has the central axis CL1 directed in the longitudinal direction of the vehicle body, and the connection side of the hydraulic pipe 8 is directed forward of the vehicle body. By arranging so that the hydraulic piping 8 is routed to the front wheel brake side, it becomes easy.

  Note that the present invention is not limited to the above-described embodiment, and the second rotation lever and the equalizer lever may be integrally formed, and the lever mechanism of the master cylinder unit may have any configuration. Absent. Further, the mounting position and mounting direction of the master cylinder unit to the vehicle body are not limited to the above-described embodiment. Furthermore, the rear wheel brake may be a hydraulic brake and the front wheel brake may be a mechanical brake.

  DESCRIPTION OF SYMBOLS 1 ... Brake device, 2 ... Front wheel brake, 2a ... Disc rotor, 2b ... Caliper body, 3 ... Rear wheel brake, 3a ... Back plate, 3b ... Brake shoe, 3c ... Cam lever, 3d ... Cam shaft, 3e ... Anchor pin, 3f ... shoe return spring, 4 ... operation lever, 5 ... brake pedal, 6 ... handle lever, 7 ... brake wire, 8 ... hydraulic pipe, 9 ... fixed shaft, 10 ... pulling rod for equalizer lever, 11 ... mechanical brake Traction rod, 20 ... master cylinder unit, 21 ... hydraulic master cylinder, 21a ... body body, 21b ... one side, 21c ... piston, 21d ... lever mounting bracket, 21e ... rotation restricting portion, 21f ... guide hole, 22 ... 1st rotation lever, 22a ... 1st rotation base, 22b ... Brake wire connection part, 22c ... Master 22a ... contact surface, 23 ... second rotating lever, 23a ... second rotating base, 23b ... equalizer lever connecting portion, 23c ... first lever pusher, 23d ... first regulating piece, 23e 2nd regulating piece, 24 ... Equalizer lever, 24a ... 2nd rotating lever connecting part, 24b ... 1st rod connecting part, 24c ... 2nd rod connecting part, 24d ... Stopper, 25, 26 ... Turning shaft

Claims (4)

One of the front and rear wheel brakes is a hydraulic brake and the other is a mechanical brake. The master cylinder is formed by combining a hydraulic master cylinder and a lever mechanism by operating the operating lever attached to the handlebar. The mechanical brake and the hydraulic brake are interlocked via the master cylinder unit by operating the hydraulic brake independently through the unit and operating a brake pedal that rotates about a fixed shaft. The master cylinder unit includes a hydraulic master cylinder that supplies hydraulic pressure to the hydraulic brake, a first rotating lever, a second rotating lever, and an equalizer lever, and the operation lever Is operated to rotate the first rotation lever and push the piston of the hydraulic master cylinder. By operating the hydraulic brake alone and operating the brake pedal, the equalizer lever is pulled through the equalizer lever pulling means connected to the brake pedal, and the equalizer lever The mechanical brake traction means is pulled via the lever to actuate the mechanical brake, and further, the piston is pushed by rotating the second rotation lever via the equalizer lever. In the bar handle vehicle brake device that operates the hydraulic master cylinder and operates the hydraulic brake in conjunction, the equalizer lever traction means is formed by an equalizer lever traction rod, and the mechanical brake The traction means is formed by a mechanical brake traction rod, and the equalizer lever For the bar handle vehicle, the mechanical brake traction rod is connected to one end, the second rotating lever is connected to the other end, and the equalizer lever traction rod is connected to the middle. Brake device. 2. The brake apparatus for a bar handle vehicle according to claim 1, wherein the master cylinder unit is disposed immediately above the pulling rod for the equalizer lever. The front wheel brake is the hydraulic brake, the rear wheel brake is the mechanical brake, and the hydraulic master cylinder is disposed with the central axis facing the vehicle longitudinal direction and the output side facing the vehicle front. 3. A brake apparatus for a bar handle vehicle according to claim 1, wherein the brake apparatus is a bar handle vehicle. The bar handle vehicle brake device according to any one of claims 1 to 3, wherein the second rotation lever and the equalizer lever are integrally formed.

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