WO2014157037A1

WO2014157037A1 - Brake device for handlebar vehicle

Info

Publication number: WO2014157037A1
Application number: PCT/JP2014/057987
Authority: WO
Inventors: 和真上原
Original assignee: 日信工業株式会社
Priority date: 2013-03-27
Filing date: 2014-03-24
Publication date: 2014-10-02
Also published as: CN105073572A; JPWO2014157037A1; TWI630143B; JP6280914B2; CN105073572B; TW201501991A

Abstract

The brake device is for a handlebar vehicle, and enables the appropriate setting of an ineffective stroke and regulations of the backward limit of a piston without causing the production precision of a master cylinder unit to become more stringent than necessary. The master cylinder unit (20) is formed by combining a lever mechanism and a hydraulic master cylinder (21). The lever mechanism is provided with a first rotating lever (41), a second rotating lever (42), a knocker (43), and an equalizer lever (44). In the hydraulic master cylinder (21), a circlip (25) that regulates the backward limit of a piston (22) is attached to the opening of a cylinder hole (21b) into which the piston (22) is inserted. The master cylinder unit (20) is disposed in a cowl (51) of the handlebar vehicle (50).

Description

Bar handle vehicle brake system

The present invention relates to a brake device for a bar handle vehicle. More specifically, at least one of a front wheel brake and a rear wheel brake is a hydraulic brake, and a hydraulic master cylinder and a lever mechanism are combined by operating a first brake operator. The present invention relates to a brake apparatus for a bar handle vehicle that operates a hydraulic brake via a master cylinder unit formed as described above.

Conventionally, at least one of the front wheel brake and the rear wheel brake is a hydraulic brake, and the hydraulic brake is applied via the master cylinder unit formed by combining the hydraulic master cylinder and the lever mechanism by the operation of the first brake operator. There is something to operate. As this master cylinder unit, there is a combination of a master cylinder and a lever mechanism. The lever mechanism includes four levers of a first rotation lever, a second rotation lever, a knocker and an equalizer lever, and a first brake. A first hydraulic lever and a knocker that are rotated by the operation of the operation element operate one hydraulic brake, and an equalizer lever, a second rotation lever, and a knocker that are rotated by the operation of the second brake operation element. In some cases, both brakes are operated in conjunction with each other (for example, see Patent Document 1).

Japanese Patent No. 4532753

By operating the first brake operator, the hydraulic brake is independently operated via the master cylinder unit, and by operating the second brake operator, the hydraulic brake and mechanical brake are operated via the master cylinder unit. When operating in conjunction with each other, it is necessary to set the invalid stroke of the master cylinder to an appropriate distance so that the hydraulic master cylinder does not operate accidentally due to the tension of the brake wire caused by steering the steering wheel to the left or right. It was. In the thing of the above-mentioned patent document 1, while the knocker and the body main body side surface of a master cylinder are contact | abutted, while the retreat limit of a piston is controlled and the invalid stroke is set, It is necessary to take into account the tolerance of the above, and the hydraulic master cylinder and knocker must be manufactured with high accuracy, so the productivity is not good.

SUMMARY OF THE INVENTION Accordingly, the present invention provides a bar handle vehicle brake device capable of appropriately setting the piston retraction limit and the invalid stroke without making the manufacturing accuracy of the master cylinder unit unnecessarily strict. It is an object.

In order to achieve the above object, a brake apparatus for a bar handle vehicle according to the present invention is configured such that at least one of a front wheel brake and a rear wheel brake is a hydraulic brake, and a hydraulic master cylinder and a lever mechanism are operated by operating a first brake operator. In a bar handle vehicle brake device that operates the hydraulic brake via a master cylinder unit formed by combining the hydraulic master cylinder, the hydraulic master cylinder is disposed at an opening of a cylinder hole into which the piston is inserted. A piston restricting means for restricting the backward limit is attached.

The lever mechanism includes at least a first rotation lever and a knocker, and a first brake connecting means connected to the first brake operation element is connected to the first rotation lever, and the first brake operation element is connected to the first brake operation element. It is preferable to operate the hydraulic brake by operating the piston of the hydraulic master cylinder via the knocker in which the first rotating lever is pushed by the above operation. Further, one of the front wheel brake and the rear wheel brake is the hydraulic brake, and the other is a mechanical brake, and the lever mechanism includes at least a second rotation lever and an equalizer lever, and the equalizer lever includes: The second brake connecting means connected to the second brake operator, the mechanical brake connecting means connected to the mechanical brake, and the second rotating lever are connected, and by operation of the first brake operator, The hydraulic brake is operated independently, and the mechanical brake is operated by pulling the mechanical brake connecting means via the equalizer lever by the operation of the second brake operator, and the equalizer lever is By rotating the second rotation lever, the piston of the hydraulic master cylinder is operated, and the liquid It is preferable to actuate in conjunction with Equation brake. The master cylinder unit is preferably disposed in a cowl of a bar handle vehicle. Further, it is preferable that the hydraulic brake is provided on the front wheel and the mechanical brake is provided on the rear wheel.

According to the bar handle vehicle brake device of the present invention, the piston of the hydraulic master cylinder is regulated in the backward limit by the piston restricting means provided in the opening of the cylinder hole. The master cylinder unit can be manufactured without considering the above, and the productivity can be improved. Further, since the piston retreat limit can be set reliably, the invalid stroke of the piston can be set well, and a good operation feeling can always be obtained.

The lever mechanism includes at least a first rotating lever and a knocker, and connects the first brake connecting means connected to the first brake operator to the first rotating lever, and by operating the first brake operator, By operating the piston of the hydraulic master cylinder and operating the hydraulic brake via a knocker that pushes the first rotating lever, the lever mechanism and the hydraulic master cylinder can connect the first brake linking means. Even if it is arranged at a position away from the piston, the backward limit is restricted by the piston restricting means provided in the cylinder hole opening, so that regardless of the tolerance or extension of the first brake operator, etc. The invalid stroke can be set satisfactorily, and a good operation feeling can always be obtained. Further, one of the front wheel brake and the rear wheel brake is the hydraulic brake, and the other is a mechanical brake. The lever mechanism includes at least a second turning lever and an equalizer lever, and the equalizer lever is operated by the second brake. The second brake connecting means connected to the child, the mechanical brake connecting means connected to the mechanical brake, and the second rotating lever are connected, and the hydraulic brake is operated independently by operating the first brake operator. The mechanical brake is actuated by pulling the mechanical brake linking means through the equalizer lever by the operation of the second brake operator, and the equalizer lever rotates the second rotating lever. By operating the piston of the hydraulic master cylinder and operating the hydraulic brake in conjunction, Also in location, it is possible to obtain a good operation feeling. Further, by disposing the master cylinder unit in the cowl of the vehicle, there is no possibility that the user will inadvertently change the setting of the interlocking state. Furthermore, by providing the hydraulic brake on the front wheel and the mechanical brake on the rear wheel, the handling of the brake wire and the hydraulic piping is improved.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic view of a bar handle vehicle brake device showing a first embodiment of the present invention. It is the partial cross section front view which similarly looked at the master cylinder unit from the driver side. Similarly, it is a left side view of the master cylinder unit. Similarly, it is a right side view of the master cylinder unit. It is a back view of a master cylinder unit similarly. FIG. 6 is a sectional view taken along line VI-VI in FIG. 4. FIG. 7 is a sectional view taken along line VII-VII in FIG. 2. It is a perspective view of a master cylinder unit showing the example of the 1st form of the present invention. It is a perspective view of a master cylinder unit similarly. It is a disassembled perspective view of a master cylinder unit similarly. It is a partial cross section front view of the vehicle which similarly mounted the master cylinder unit. FIG. 6 is an explanatory diagram of the master cylinder unit in a state where only the first operation lever is operated and only the hydraulic brake is operated. Similarly, only the second operation lever is operated and it is an explanatory diagram of the master cylinder da unit when it is in an interlocking state. Similarly, it is an explanatory view of the master cylinder unit in a state where only the second operation lever is further operated to restrict the operation of the hydraulic brake. Similarly, it is an explanatory view in the front direction of the master cylinder unit in a state where only the second operation lever is operated and only the mechanical brake is operated. Similarly, it is an explanatory view in the rear direction of the master cylinder unit in a state where only the second operation lever is operated and only the mechanical brake is operated. Similarly, it is an explanatory diagram of the master cylinder unit when both the operation levers are operated. FIG. 5 is a partial cross-sectional front view of a master cylinder unit showing a second embodiment of the present invention.

1 to 17 show a first embodiment of the present invention. As shown in FIGS. 1 and 2, the brake device 1 for a bar handle vehicle according to the present embodiment includes a front wheel brake 2 and a rear wheel brake. 3, a front wheel brake operation element 4 (first brake operation element of the present invention), and a rear wheel brake operation element 5 (second brake operation element of the present invention), and a front wheel brake 2 and a front wheel brake operation. A master cylinder unit 20 is interposed between the child 4, the rear wheel brake 3 and the rear wheel brake operator 5.

In the following description of the master cylinder unit, the left side and the right side are the left side and the right side as viewed from the driver side as shown in FIG. The left side and front wheel brake operation element 4 side will be described as the right side. Similarly, description of clockwise and counterclockwise directions will be described as directions with respect to the front view.

The front wheel brake 2 uses a hydraulic disc brake in which a disc rotor 2a that rotates integrally with the front wheel is combined with a caliper body 2b having a piston. The rear wheel brake 3 is a mechanical drum brake in which a pair of

brake shoes

3b, 3b are disposed opposite to a back plate 3a so as to be able to expand, and both

brake shoes

3b, 3b are expanded using anchor pins 3c as fulcrums. ing.

The front wheel brake operation element 4 operates the operation lever 4 a attached to the handlebar 6 to pull the first brake wire 7 (the first brake connecting means of the present invention). The master cylinder 21 is operated to supply hydraulic pressure to the front wheel brake 2 via the hydraulic pressure pipe 8, and the front wheel brake 2 is operated independently.

The rear wheel brake operator 5 operates the operation lever 5 a attached to the handle bar 6, whereby the second brake wire 9 (second brake connecting means of the present invention) is pulled, via the master cylinder unit 20. The rear wheel brake 3 for operating the rear wheel brake 3 (the mechanical brake connecting means of the present invention) is pulled to operate the rear wheel brake 3, and the hydraulic master cylinder 21 of the master cylinder unit 20 is operated. By operating, the hydraulic pressure is supplied to the front wheel brake 2 via the hydraulic pressure pipe 8 to operate the front wheel brake 2 in conjunction with each other.

The master cylinder unit 20 is a combination of the hydraulic master cylinder 21 for supplying hydraulic pressure to the front wheel brake 2 and a lever mechanism 40. The lever mechanism 40 includes a first rotating lever 41 and a second rotating lever. A lever 42, a knocker 43, and an equalizer lever 44 are provided. Further, the master cylinder unit 20 is disposed in a cowl 51 of a bar handle vehicle 50 as shown in FIG.

The hydraulic master cylinder 21 is provided with a bottomed cylinder hole 21b in the cylinder body 21a, and a piston 22 is inserted in the cylinder hole 21b so as to be movable. A fluid pressure chamber 23 is defined between the

fluid pressure chambers

22 and 22. A return spring 24 is contracted in the hydraulic chamber 23, and the piston 22 is always urged toward the opening side of the cylinder hole 21 b by the elastic force of the return spring 24. The cylinder hole 21b has a large-diameter portion 21c formed on the lower end side, and is formed in the circlip 25 (piston restricting means of the present invention) fitted to the large-diameter portion 21c and the intermediate portion in the axial direction of the piston 22. Due to the contact with the flange portion 22a, the retreat limit of the piston 22 is restricted, and the lower end side of the piston 22 is protruded below the lower end opening of the cylinder body 21a.

An output port 21d is provided on the upper wall of the cylinder body 21a so as to communicate with the hydraulic chamber 23. The hydraulic port 8 is connected to the output port 21d so that the hydraulic chamber 23 and the front wheel brake 2 communicate with each other. Yes. A raised portion 21e is provided in the cylinder axial direction on the upper surface of the peripheral wall of the cylinder body 21a, and a boss hole 21f is provided in a substantially central portion of the raised portion 21e so as to communicate with the cylinder hole 21b. The through-tube 26 is connected, and the cylinder hole 21b and the reservoir 27 are communicated. Further, on the cylinder hole opening side of the raised portion 21e, a first wire guide portion 21g for guiding the first brake wire 7 is provided so as to protrude to the right side (the front wheel brake operation element 4 side), and at the center of the raised portion 21e. The second wire guide portion 21h for guiding the second brake wire 9 is provided so as to protrude to the back side (the vehicle body front side).

Bolt holes

21i and 21i for mounting the body mounting bolts are formed in a direction perpendicular to the cylinder axis on the upper wall side and the cylinder hole opening side across the boss hole 21f.

Furthermore, an engaging piece 21j of the delay spring 28 is projected from the upper wall side front surface of the cylinder body 21a. In addition, a pair of

lever holders

21k and 21m project from the back side and the front side of the cylinder body 21a in the vicinity of the opening of the cylinder hole, and a fixing pin 29 is attached to the

lever holders

21k and 21m. The hole 21n and the female screw hole 21p are formed coaxially.

Further, on the cylinder hole opening side of the cylinder body 21a, a stopper bolt mounting boss portion 21q is positioned on the left side of the

lever holders

21k, 21m (on the rear wheel brake operation element 5 side) with an acute angle with respect to the cylinder axis CL1. A stopper bolt 30 is attached to the stopper bolt mounting boss portion 21q, which protrudes in the direction L2 shown in FIG. Further, the lower portion of the stopper bolt mounting boss portion 21q is formed in a triangular shape with a downward cross section when viewed from the front, and a right slope is in contact with the second rotation lever 42 to set the initial position of the second rotation lever 42. A second rotating lever contact surface 21r is provided. Further, a rear wheel brake wire guide portion 21s projects from the lower portion of the back surface of the cylinder body 21a on the cylinder hole opening side.

The stopper bolt 30 includes a shaft portion 30b having a male screw portion 30a and a head portion 30d having a large-diameter seating surface 30c, with the male screw portion 30a facing upward and the head portion 30d facing downward. The stopper bolt mounting boss 21q is screwed and fixed using a nut member 30e.

The lever mechanism 40 includes a first rotation base 41a of the first rotation lever 41 on the front side between the

lever holders

21k and 21m, a second rotation base 42a of the second rotation lever 42 on the back side, and a first. The third rotation base 43a of the knocker 43 is arranged between the rotation base 41a and the second rotation base 42a, respectively, so that the

lever holders

21k and 21m, the first rotation base 41a, the second rotation base 42a, The fixing pin 29 is inserted through the third rotation base 43a and fixed using the nut member 29a, whereby the first rotation lever 41 and the second rotation lever 42 are mounted on the

lever holders

21k and 21m. The knocker 43 is rotatably connected, and the second turning lever connecting portion 44 a provided at the right end portion of the equalizer lever 44 is connected to the connecting arm 42 b provided at the right end portion of the second turning lever 42. Rotate via pin 31 It is pivotally supported to function.

In the first rotation lever 41, an adjustment bolt mounting portion 41c extends from the first rotation base portion 41a provided with the insertion hole 41b of the fixing pin 29, and a knocker 43 is connected to the female screw portion 41d of the adjustment bolt mounting portion 41c. An adjustment bolt 32 that is in contact with the nut is attached using a nut member 32a so that the amount of protrusion can be adjusted. Furthermore, the 1st brake wire connection part 41e which connects the edge part of the 1st brake wire 7 is provided in the front side of the adjustment bolt attaching part 41c.

The second rotation lever 42 is formed in a substantially triangular shape in a front view in which the second rotation base 42a provided with an insertion hole 42c for the fixing pin 29 protrudes upward at the center, and the second rotation base 42a. An arm portion 42d extending in the left-right direction of the second rotation base portion 42a is provided on the back side of the second rotation base portion 42a. The connecting arm 42b is provided on the right end side of the arm portion 42d, the insertion hole 42e of the connecting pin 31 is formed in the connecting arm 42b, and one holding piece for holding the stopper bolt 30 on the left end side. 42f is formed.

A substantially cube-shaped joint part 42g protrudes along the inclination of the second rotation base part 42a on the left end front surface of the second rotation base part 42a, and the cylinder body 21a is formed on the upper left side surface of the joint part 42g. A body contact surface 42h that contacts the second rotation lever contact surface 21r is formed, and a knocker pushing surface 42i that contacts the knocker 43 and pushes the knocker 43 is formed on the lower right side surface. The other holding piece 42j is integrally projected on the left side of the joint portion 42g in parallel with the one holding piece 42f. The engaging protrusion of the delay spring 28 is formed on the front end side of the other holding piece 42j. 42k protrudes.

The delay spring 28 is formed of a tension type coil spring having

attachment portions

28a, 28a provided at both ends, a winding portion 28b provided above the intermediate portion, and a straight portion 28c provided below the intermediate portion. ing.

In the knocker 43, a piston pushing portion 43c is formed on the right side of the third rotation base portion 43a provided with the insertion hole 43b of the fixing pin 29. The piston pushing portion 43c is provided with a piston abutting portion 43d that is always in contact with the lower end portion of the piston 22 at the upper portion, and an adjustment bolt abutting surface 43e that is in contact with the adjusting bolt 32 is provided on the lower surface of the piston pushing portion 43c. Is formed. A receiving surface 43f that is pushed by the knocker pushing surface 42i is formed below the third turning base 43a.

The equalizer lever 44 is disposed on the back side of the cylinder body 21a, the rear wheel brake wire connecting portion 44b for connecting the rear wheel brake wire 10 is connected to one end portion, and the second brake wire 9 is connected to the center portion. The second brake wire connecting portion 44c to be connected is formed with the second rotating lever connecting portion 44a connected to the connecting arm 42b of the second rotating lever 42 at the other end. The second turning lever connecting portion 44a is formed in a bifurcated shape having an insertion hole 44d for the connecting pin 31, and the connecting arm 42b is inserted between the second turning lever connecting portion 44a, and the

insertion holes

44d, 44d, By inserting the connecting pin 31 into 42f and stopping with the retaining ring 31a, the second rotating lever connecting portion 44a is rotatably connected to the connecting arm 42b.

The first rotation lever 41, the second rotation lever 42, and the knocker 43 described above are rotatably connected between the

lever holders

21k and 21m, and the connecting arm 42b of the second rotation lever 42 is provided. Is connected to the second rotating lever connecting portion 44a of the equalizer lever 44 via the connecting pin 31, and is pulled into the rear wheel brake wire connecting portion 44b of the equalizer lever 44 via the rear wheel brake wire guide portion 21s. The rear wheel brake wire 10 thus connected is connected to the second brake wire connecting portion 44c with the second brake wire 9 drawn through the second wire guide portion 21h. In addition, the first brake wire 7 drawn through the first wire guide portion 21g is connected to the first brake wire connecting portion 41e of the first rotating lever 41. Further,

attachment portions

28a and 28a of the delay spring 28 are attached to the engagement piece 21j of the cylinder body 21a and the engagement protrusion 42k of the second rotation lever 42, respectively.

The stopper bolt 30 is disposed in the vicinity of the

lever holders

21k and 21m, and the shaft portion 30b is disposed between the sandwiching

pieces

42f and 42j of the second rotating lever 42. Further, the stopper bolt 30 and the delay spring 28 are arranged in parallel and in an adjacent position (FIG. 2) where they overlap in front view, and the nut member 30e of the stopper bolt 30 is connected to the straight portion 28c of the delay spring 28. It is arranged at the corresponding position.

When the master cylinder unit 20 formed as described above is in a non-operating state, as shown in FIGS. 1 to 9, the piston 22 of the hydraulic master cylinder 21 is moved into the cylinder hole by the elastic force of the return spring 24. The piston 22 is urged toward the opening, and the piston 22 is disposed at the retreat limit position by the contact between the flange portion 22a of the piston 22 and the circlip 25.

In addition, the initial position of the first rotation lever 41 is held by the tension of the first brake wire 7 connected to the first brake wire connecting portion 41e, and the second rotation lever 42 is the elasticity of the delay spring 28. Thus, the second rotation lever contact surface 21r is in contact with the body contact surface 42h of the joint portion 42g. Further, in the knocker 43, the adjustment bolt contact surface 43e is in contact with the tip of the adjustment bolt 32, the receiving surface 43f is in contact with the knocker pushing surface 42i with a slight clearance, and the piston contact portion 43d is in contact with the piston 22. Abut. Further, the equalizer lever 44 is in a state where the tension of the second brake wire 9 and the tension of the rear wheel brake wire 10 are balanced with the second rotating lever connecting portion 44a being connected to the connecting arm 42b. In a horizontal state.

When the front wheel brake operation element 4 is operated from the inoperative state, the first brake wire 7 is pulled and the first brake wire connecting portion 41e of the first rotation lever 41 is moved upward as shown in FIG. The first rotation lever 41 rotates counterclockwise around the first rotation base 41a. Along with this, the adjustment bolt 32 pushes the adjustment bolt contact surface 43e of the knocker 43, rotates the knocker 43 counterclockwise around the third rotation base 43a, and the piston contact portion 43d. Pushes the piston 22. 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 rear wheel brake operator 5 is operated, first, as shown in FIG. 13, the second brake wire 9 is pulled and the equalizer lever 44 is connected via the second brake wire connecting portion 44 c of the equalizer lever 44. The whole is pulled upward. Along with this, the rear wheel brake wire 10 connected to the rear wheel brake wire connecting portion 44b is pulled, and the rear wheel brake 3 starts to be operated, and the second rotating lever connecting portion 44a of the equalizer lever 44 is activated. The connecting arm 42b of the second rotating lever 42 connected to the second pulling lever 42 is also pulled upward, so that the second rotating lever 42 is centered on the second rotating base 42a against the resilient force of the delay spring 28. The piston 22 is pushed by rotating counterclockwise and the knocker pushing surface 42i abuts against the receiving surface 43f of the knocker 43 to push the pressurized hydraulic fluid through the hydraulic pipe 8. The hydraulic pressure is supplied to the front wheel brake 2, and the front wheel brake 2 is operated in conjunction with it.

When the rear wheel brake operator 5 is further operated, as shown in FIG. 14, the equalizer lever 44 is further pulled upward, and the second rotation lever 42 is centered on the second rotation base 42a. The pair of clamping

pieces

42f and 42j abut against the seating surface 30c of the stopper bolt 30 and the rotation of the knocker 43 is stopped and the rotation of the knocker 43 is stopped. The supply of hydraulic pressure is regulated.

When the rear wheel brake operation element 5 is operated more strongly, as shown in FIGS. 15 and 16, the pair of clamping

pieces

42f and 42j abut against the seating surface 30c of the stopper bolt 30 to perform the second rotation. Since the rotation of the lever 42 is restricted and the position of the connecting pin 31 is fixed, the equalizer lever 44 rotates clockwise around the connecting pin 31 and the brake wire for the rear wheel Only 10 is pulled and the rear wheel brake 3 is operated more strongly.

In addition, as shown in FIG. 17, when the front wheel brake operation element 4 and the rear wheel brake operation element 5 are strongly input simultaneously, the first turning lever 41 is pulled by the first brake wire 7. Rotating independently, pushing the piston 22 to strongly actuate the front wheel brake 2, and the movement of the equalizer lever 44 pulled by the second brake wire 9 causes the second rotation lever 42 to move as described above. Then, after the

clamping pieces

42f and 42j are in contact with the seating surface 30c of the stopper bolt 30 and the rotation is restricted, the equalizer lever 44 is rotated about the connecting pin 31 and the rear wheel brake The wire 10 is pulled and the rear wheel brake 3 is operated strongly.

In this embodiment, the piston 22 of the hydraulic master cylinder 21 is restricted to move backward by a circlip 25 provided in the opening of the cylinder hole, so that the knocker 43 and the cylinder body 21a can be Even if it is not formed with high accuracy, the retreat limit of the piston 22 can be reliably regulated, and the productivity can be improved. Further, since the retreat limit of the piston 22 can be set reliably, the invalid stroke of the piston 22 can be set well, and a good operation feeling can always be obtained.

Further, since the first turning lever 41 is in contact with the knocker 43 via the adjustment bolt 32, the piston is moved via the knocker 43 from the start of operation of the front wheel brake operation element 4 by adjusting the adjustment bolt 32. The invalid stroke until the 22 is pushed can be easily adjusted at the factory. On the other hand, since the master cylinder unit 20 is disposed in the cowl 51 of the bar handle vehicle 50, the adjustment bolt 32 cannot be adjusted by the user, and the interlocking state may be changed carelessly by the user. Absent.

FIG. 18 shows a second embodiment of the present invention. Components that are the same as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

The first turning lever 41 of the present embodiment is provided with a contact piece 41f extending corresponding to the piston pushing portion 43c of the knocker 43, and the piston pushing portion 43c of the knocker 43 is brought into contact with the piston pushing portion 43c. An adjustment bolt mounting portion 43g is formed corresponding to the piece 41f, and the adjustment bolt 32 can adjust the protruding amount using the nut member 32a toward the contact piece 41f on the female screw portion 43h of the adjustment bolt mounting portion 43g. It is attached.

The present invention is not limited to the above-described embodiments, and the mounting position of the master cylinder unit is arbitrary, and the mounting direction of the master cylinder unit is also arbitrary. Furthermore, the rear wheel brake may be a hydraulic brake and the front wheel brake may be a mechanical brake. Furthermore, the second brake linkage means and the mechanical brake linkage means of the present invention are not limited to brake wires as in the above-described embodiment. Furthermore, the present invention can be applied even if it is not a brake device for interlocking brakes. In the above-described embodiment, the master cylinder unit is disposed at a position away from the first brake operation element. However, the present invention may be such that the master cylinder unit is directly attached to the first brake operation element. .

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 ... Anchor pin, 4 ... Front wheel brake operation element, 4a Operation lever, 5 ... Rear wheel brake operator, 5a ... Operation lever, 6 ... Handlebar, 7 ... First brake wire, 8 ... Hydraulic piping, 9 ... Second brake wire, 10 ... Rear wheel brake wire 20 ... Master cylinder unit, 21 ... Hydraulic master cylinder, 21a ... Cylinder body, 21b ... Cylinder hole, 21c ... Large diameter hole, 21d ... Output port, 21e ... Raised portion, 21f ... Boss portion, 21g ... First wire Guide portion, 21h ... second wire guide portion, 21i ... bolt hole, 21j ... engagement piece, 21k, 21m ... lever holder, 21n ... through hole, 21p Female screw hole, 21q ... stopper bolt mounting boss, 21r ... second rotating lever contact surface, 21s ... rear wheel brake wire guide, 22 ... piston, 22a ... flange, 23 ... hydraulic chamber, 24 ... return Spring, 25 ... Circlip, 26 ... Fluid passage, 27 ... Reservoir, 28 ... Delay spring, 28a ... Mounting portion, 29 ... Fixing pin, 30 ... Stopper bolt, 30a ... Male screw portion, 30b ... Shaft portion, 30c ... Seat Surface 30d ... Head 30e ... Nut member 31 ... Connecting pin 31a ... Retaining ring 32 ... Adjust bolt 32a ... Nut member 40 ... Lever mechanism 41 ... First turning lever 41a ... First Moving base, 41b ... insertion hole, 41c ... adjust bolt mounting part, 41d ... female screw part, 41e ... first brake wire connecting part, 41f ... contacting piece, 42 ... second rotation lever -, 42a ... 2nd rotation base, 42b ... connection arm, 42c ... insertion hole, 42d ... arm part, 42e ... insertion hole, 42f ... clamping piece, 42g ... joint part, 42h ... body contact surface, 42i ... knocker Pushing surface, 42k ... engaging protrusion, 43 ... knocker, 43a ... third rotating base, 43b ... insertion hole, 43c ... piston pushing portion, 43d ... piston abutting portion, 43e ... adjusting bolt abutting surface, 43f ... Receiving surface, 43g ... Adjust bolt mounting part, 43h ... Female thread part, 44 ... Equalizer lever, 44a ... Second rotating lever connecting part, 44b ... Brake wire connecting part for rear wheel, 44c ... Second brake wire connecting part, 44d ... insertion hole, 50 ... bar handle vehicle, 51 ... cowl rod

Claims

At least one of the front wheel brake and the rear wheel brake is a hydraulic brake, and the hydraulic brake is operated by operating the first brake operator via a master cylinder unit formed by combining a hydraulic master cylinder and a lever mechanism. In the above-described bar handle vehicle brake device, the hydraulic master cylinder is provided with a piston restricting means for restricting a retreat limit of the piston at an opening of a cylinder hole into which the piston is inserted. Brake device for steering vehicle.
The lever mechanism includes at least a first rotation lever and a knocker, and a first brake connecting means connected to the first brake operation element is connected to the first rotation lever, and the first brake operation element is operated. 2. The bar-handle vehicle according to claim 1, wherein the hydraulic brake is operated by operating a piston of the hydraulic master cylinder via the knocker in which the first rotation lever is pushed. Brake device.
One of the front wheel brake and the rear wheel brake is the hydraulic brake, and the other is a mechanical brake. The lever mechanism includes at least a second rotation lever and an equalizer lever, and the equalizer lever includes the first brake and the second brake. A second brake connecting means connected to the two brake operators, a mechanical brake connecting means connected to the mechanical brake, and the second rotating lever, and the liquid is operated by operating the first brake operator. The pressure brake is operated independently, and the mechanical brake is operated by pulling the mechanical brake connecting means via the equalizer lever by operating the second brake operator, and the equalizer lever is 2 The piston of the hydraulic master cylinder is actuated by rotating the rotating lever, and the hydraulic Bar-handle vehicle brake system according to claim 1 or 2, wherein the actuating in conjunction with a rk.
The bar handle vehicle brake device according to any one of claims 1 to 3, wherein the master cylinder unit is disposed in a cowl of a bar handle vehicle.
The bar handle vehicle brake device according to any one of claims 1 to 4, wherein the hydraulic brake is provided on a front wheel and a mechanical brake is provided on a rear wheel.