JP2015039915A - Brake device for bar handle vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a brake device for a bar handle vehicle which achieves downsizing of a master cylinder unit.SOLUTION: A knocker 43 includes: a rotation base part 43a rotatably attached to a cylinder body 21a of a hydraulic master cylinder 21: a piston pressing part 43c which operates a piston 22; a first rotation lever contact surface 43d pressed by a first rotation lever 41; and a second rotation lever contact surface 43f pressed by a second rotation lever 42. The second rotation lever contact surface 43f and the first rotation lever contact surface 43d are formed by a continuous surface.

Description

  The present invention relates to a brake device for a bar handle vehicle, and more specifically, one of a front brake and a rear brake is a hydraulic brake and the other is a mechanical brake, and the hydraulic brake is operated by operating a first brake operator. And a brake device for a bar handle vehicle that operates a hydraulic brake and a mechanical brake in conjunction with each other by operating a second brake operator.

  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.

  As this master cylinder unit, there has been a combination of a hydraulic master cylinder and a lever mechanism. As a lever mechanism, there is a lever mechanism including four levers of a first rotation lever, a second rotation lever, a knocker, and an equalizer lever, and a first rotation lever that is rotated by the operation of the first brake operator, The hydraulic brake is operated with the knocker, and the hydraulic brake and the mechanical brake are operated in conjunction with the equalizer lever, the second rotation lever, and the knocker, which are rotated by the operation of the second brake operator, The knocker was formed with a first rotating lever abutting surface pushed by the first rotating lever and a second rotating lever abutting surface pushed by the second rotating lever (for example, , See Patent Document 1).

Japanese Patent No. 4532753

  However, in the thing of the above-mentioned patent document 1, since the 1st rotation lever contact surface and 2nd rotation lever contact surface which are formed in a knocker are provided in the position which left | separated, the shape of a knocker is As the size of the master cylinder increases, the master cylinder may become larger.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a bar handle vehicle brake device capable of reducing the size of a master cylinder unit.

  In order to achieve the above object, a brake apparatus for a bar handle vehicle according to the present invention uses a hydraulic brake as one of a front wheel brake and a rear wheel brake and a mechanical brake as the other, and operates a first brake operator to The hydraulic brake is operated independently through a master cylinder unit formed by combining a pressure master cylinder and a lever mechanism, and the hydraulic type is operated through the master cylinder unit by operating a second brake operator. The brake is operated in conjunction with the mechanical brake, and the lever mechanism includes a first rotating lever, a second rotating lever, a knocker, and an equalizer lever, and is connected to the first brake operator. The connecting means is connected to the first rotation lever, and the first rotation lever is pushed by the operation of the first brake operator. Via the knocker, to actuate the piston of the hydraulic master cylinder, to actuate the hydraulic brake alone, and to the equalizer lever, the second brake linkage means connected to the second brake operator, A mechanical brake side linking means connected to a mechanical brake is connected to the second rotating lever, and the mechanical brake side linking means is pulled through the equalizer lever by operation of the second brake operator. The mechanical brake is operated, and the equalizer lever rotates the second rotation lever, and the piston of the hydraulic master cylinder is operated via the knocker that the second rotation lever pushes. In the bar handle vehicle brake device that operates the hydraulic brake in conjunction with each other, the knocker includes the hydraulic mass A pivot base that is pivotally attached to a cylinder body of the cylinder, a piston pushing portion that abuts against the piston to operate the piston, abuts against the first pivot lever, and A first rotation lever abutting surface that is pushed and a second rotation lever abutment surface that abuts on the second rotation lever and is pushed by the second rotation lever, The second rotation lever contact surface and the first rotation lever contact surface are formed as a continuous surface.

  The knocker has a first rotating lever contact surface formed on a lower surface of the piston pushing portion, and protrudes in a direction of the second turning lever below the piston pushing portion. Preferably, a protrusion is formed, and the second rotating lever contact surface is formed on the lower surface of the protrusion. Furthermore, it is preferable that the first rotating lever contact surface is formed by a head portion of a bolt member embedded in the knocker. The first rotating lever contact surface and the second rotating lever contact surface may be formed on the same surface.

  According to the bar handle vehicle brake device of the present invention, the knocker is pressed by the first rotation lever and the second rotation lever is pressed by the second rotation lever. Since the rotating lever contact surface is formed as a continuous surface, the shape of the knocker can be simplified and reduced, and the master cylinder unit can be reduced in size.

  Further, the knocker has a first rotating lever contact surface formed on the lower surface of the piston pushing portion, and a protrusion protruding in the direction of the second turning lever is formed below the piston pushing portion. By forming the second rotation lever contact surface on the lower surface of the projection, the first rotation lever contact surface and the second rotation lever contact surface can be easily formed.

  In addition, since the first rotation lever contact surface is formed by the head of the bolt member embedded in the knocker, the first rotation lever contact surface is not worn even if the operation is repeated. The cylinder unit can always be operated with high accuracy.

  Furthermore, by forming the first rotation lever contact surface and the second rotation lever contact surface on the same surface, the shape of the knocker can be simplified, and the manufacturing cost can be reduced. .

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 a partial cross section front view of a hydraulic master cylinder unit. FIG. 3 is a right side view of the hydraulic master cylinder unit. It is a rear view of a hydraulic master cylinder unit. It is a left view of a hydraulic master cylinder unit similarly. It is a top view of a hydraulic master cylinder unit similarly. It is a bottom view of a hydraulic master cylinder unit similarly. It is VIII-VIII sectional drawing of FIG. It is a perspective view of a master cylinder unit showing the example of the 1st form of the present invention. It is explanatory drawing of the master cylinder unit of the state which operated only the 1st operation lever and act | operated only the hydraulic brake similarly. Similarly, it is explanatory drawing of a master cylinder unit at the time of operating only a 2nd operation lever and becoming an interlocking state. Similarly, it is an explanatory view of the master cylinder unit in a state where only the second operation lever is operated to restrict the operation of the hydraulic brake. Similarly, it is a rear view of the master cylinder unit in a state where only the second operation lever is operated to restrict the operation of the hydraulic brake. It is explanatory drawing of a master cylinder unit at the time of operating both operation levers similarly. It is explanatory drawing of the master cylinder unit which shows the 2nd form example of this invention.

  FIGS. 1 to 14 show a first 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 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) are provided, and a front wheel brake 2 and a front wheel brake operation element 4 are provided. A master cylinder unit 20 is interposed between the rear wheel brake 3 and the rear wheel brake operation element 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. 1, and the rear wheel brake operator 5 side is the left side. The front wheel brake operator 4 side will be described as the right side.

  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. 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.

  The hydraulic master cylinder 21 is provided with a bottomed cylinder hole 21b in the cylinder body 21a with its lower end opened, and a piston 22 is movably inserted into the cylinder hole 21b. A hydraulic chamber (not shown) is defined between the upper wall portion of the cylinder hole 21b and the piston 22, and an output port (not shown) communicating with the hydraulic chamber is formed on the upper wall portion. Then, one end side of the hydraulic pipe 8 is connected to the output port via a banjo 23 and a banjo bolt 24. In addition, a return spring (not shown) is contracted in the hydraulic chamber, and the piston 22 is always urged toward the opening side of the cylinder hole 21b by the elastic force of the return spring. The initial position is set by contacting the circlip 22a fitted to the large diameter portion formed on the lower end side. Further, a raised portion 21c is provided in the cylinder axial direction on the front side of the peripheral wall of the cylinder body 21a, and a boss hole 21d is provided in a substantially central portion of the raised portion 21c so as to communicate with the cylinder hole 21b. 21d is provided with a liquid passage 25 to which the other end of the pipe 12 having one end connected to the reservoir 11 storing the working fluid is connected. The liquid passage pipe 25 is formed in an L shape, and has a first pipe part 25a (the pipe part of the present invention) connected to the boss hole 21d and a second pipe part 25b connecting the pipe 12. . Further, on the cylinder hole opening side of the raised portion 21c, a first wire guide portion 21e for guiding the first brake wire 7 is provided so as to protrude to the right side (front wheel brake operator 4 side), and at the center of the raised portion 21c. A second wire guide portion 21f for guiding the second brake wire 9 is provided so as to protrude to the back side (the vehicle body front side). Bolt holes 21g and 21g for mounting the body mounting bolts are formed on the upper wall side and the cylinder hole opening side across the boss hole 21d.

  Further, an engagement piece 21h of the delay spring 26 projects from the front surface on the upper wall side of the cylinder body 21a. Also, a pair of lever holders 21i and 21i project from the front side and the back side of the cylinder body 21a near the cylinder hole opening. Further, on the cylinder hole opening side of the cylinder body 21a, a stopper bolt mounting boss portion 21j is formed protruding from the lever holders 21i, 21i on the left side (rear wheel brake operating element 5 side). A stopper bolt 27 is attached to the boss portion 21j. Further, the lower surface of the stopper bolt mounting boss portion 21j is a second rotating lever abutting surface 21k that contacts the second rotating lever 42 and sets the initial position of the second rotating lever 42. Further, a rear wheel brake wire guide portion 21m protrudes from a lower back portion of the cylinder body 21a on the cylinder hole opening side.

  The lever mechanism 40 includes a rotation base 41a of the first rotation lever 41 on the front side between the lever holders 21i and 21i, a rotation base 42a of the second rotation lever 42 on the back side, and a first rotation base lever. When the rotation base 43a of the knocker 43 is disposed between the rotation base of the second rotation lever and the rotation base of the second rotation lever, and the fixing pin 28 is mounted, the lever holders 21i and 21i are attached to the first time. The moving lever 41, the second rotating lever 42, and the knocker 43 are rotatably connected to each other. The connecting arm 42b provided at the right end of the second rotating lever 42 is provided at the right end of the equalizer lever 44. The second turning lever connecting portion 44a is pivotally supported.

  The first rotation lever 41 has an adjustment bolt mounting portion 41b extending from the rotation base portion 41a, and an adjustment bolt 29 abutting on the knocker 43 is mounted on the adjustment bolt mounting portion 41b so that the amount of protrusion can be adjusted. Yes. Furthermore, the 1st brake wire connection part 41c which connects the edge part of the 1st brake wire 7 is provided in the front side of the adjustment bolt attachment part 41b.

  The second turning lever 42 has the turning base 42a formed at the center, and an arm portion extending in the left-right direction of the second turning base 42a is provided on the back side of the turning base 42a. The connecting arm 42b connected to the equalizer lever 44 is provided on the right end side of the arm portion, and a holding piece 42c for holding the stopper bolt 27 is formed on the left end side. Furthermore, an engaging protrusion 42d of the delay spring 26 is provided on the front side of the sandwiching piece 42c. Further, a knocker pushing portion 42e that contacts the knocker 43 and pushes the knocker 43 is formed at the right end portion of the second turning base portion 42a, and a second turning lever abutting surface is formed at the left end portion. A body contact surface 42f that contacts 21k is formed. The delay spring 26 is formed of a tension type coil spring including attachment portions 26a and 26a provided at both ends and a winding portion 26b formed between the attachment portions 26a and 26a.

  In the knocker 43, a piston pushing portion 43b is formed on the right side of the rotation base portion 43a. The piston pushing portion 43b is provided with a piston abutting portion 43c that always abuts on the lower end portion of the piston 22 at the upper portion. A head portion 45a of a bolt member 45 embedded in the knocker 43 is disposed on the lower surface of the piston pushing portion 43b, and an adjustment bolt contact surface on which an outer end surface of the head portion 45a contacts the adjustment bolt 29 is disposed. 43d (first rotating lever contact surface of the present invention). Further, a projection 43e protruding in the direction of the second rotation lever 42 is formed below the piston pushing portion 43b, and a first portion pushed by the knocker pushing portion 42e is formed on the lower surface of the projection 43e. As shown in FIGS. 11 and 12, the second rotation lever contact surface 43f and the adjustment bolt contact surface 43d are formed as a continuous surface. .

  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 rotating lever connecting portion 44a is formed in a bifurcated shape, the connecting arm 42b is inserted between the second rotating lever connecting portions 44a, and the second rotating lever connecting portion 44a is connected via the connecting pin 30. The arm 42b is rotatably connected.

  The first rotation lever 41, the second rotation lever 42, and the knocker 43 described above are rotatably connected between the lever holders 21i and 21i, and the connecting arm 42b of the second rotation lever 42 is provided. Is connected to the second turning lever connecting portion 44a of the equalizer lever 44 via the connecting pin 30, 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 21m. 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 21f. The first brake wire 7 drawn through the first wire guide portion 21e is connected to the first brake wire connecting portion 41c of the first rotating lever 41. Furthermore, attachment portions 26a and 26a of the delay spring 26 are attached to the engagement piece 21h of the cylinder body 21a and the engagement protrusion 42d of the second rotation lever 42, respectively.

  Further, as shown in FIG. 6, the liquid passage 25 formed in the cylinder body 21a has a parallel surface F2 in which the axis L1 of the first tube portion 25a is parallel to the rotation surface on which the knocker 43 rotates, In the present embodiment, the axis L1 of the first pipe portion 25a is slightly inclined obliquely upward with respect to the horizontal plane, disposed in a direction along other planes excluding the orthogonal plane F3 orthogonal to the parallel plane F2. The axial line L2 of the second pipe part 25b is arranged so as to face obliquely downward from the tip part of the first pipe part 25a. Further, the distal end portion of the first tube portion 25a is disposed so as not to protrude to the outer peripheral side of the cylinder body 21a from the first wire guide portion 21e, the second wire guide portion 21f, and the rear wheel brake wire guide portion 21m.

  When the master cylinder unit 20 formed as described above is in an inoperative state, as shown in FIGS. 1 to 9, the piston 22 of the hydraulic master cylinder 21 opens the cylinder hole by the elastic force of the return spring. It is urged in the part direction and is arranged at the initial position by contact with the circlip 22a. Further, the first rotation lever 41 is held at the initial position of the first rotation lever 41 by the tension of the first brake wire 7 connected to the first brake wire connecting portion 41c, and the second rotation lever 42 is Due to the elastic force of the delay spring 26, the body contact surface 42f is in contact with the second rotation lever contact surface 21k. Further, in the knocker 43, the adjustment bolt contact surface 43d contacts the tip of the adjustment bolt 29, the second rotating lever contact surface 43f contacts the knocker pushing portion 42e, and the piston contact portion 43c serves as 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 non-actuated state, as shown in FIG. 10, the first brake wire 7 is pulled, and the first brake wire connecting portion 41c of the first rotating lever 41 is moved upward. The first rotation lever 41 rotates counterclockwise around the rotation base 41a. Along with this, the adjustment bolt 29 pushes the adjustment bolt contact surface 43d of the knocker 43, rotates the knocker 43 counterclockwise about the rotation base 43a, and the piston contact portion 43c moves to the piston. 22 is pushed. 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. 11, 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 upper part is also pulled upward, and the second rotating lever 42 counterclockwise around the rotating base 42a against the resilient force of the delay spring 26. The piston 22 is pushed when the knocker pushing portion 42e is brought into contact with the second turning lever abutting surface 43f of the knocker 43 and pushed, and the pressurized hydraulic fluid is supplied to the hydraulic pipe. The hydraulic pressure is supplied to the front wheel brake 2 via 8 and the front wheel brake 2 is operated in conjunction.

  When the rear wheel brake operator 5 is further operated, as shown in FIGS. 12 and 13, the equalizer lever 44 is further pulled upward, and the second rotation lever 42 is centered on the rotation base 42a. The pair of clamping pieces 42c, 42c abut against the seating surface 27a of the stopper bolt 27 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 operator 5 is operated more strongly, the pair of clamping pieces 42c and 42c come into contact with the seating surface 27a of the stopper bolt 27 and the rotation of the second rotation lever 42 is restricted. Since the position of the connecting pin 30 is fixed, the equalizer lever 44 rotates clockwise about the connecting pin 30, pulls only the rear wheel brake wire 10, and further releases the rear wheel brake 3. Operate strongly.

  As shown in FIG. 14, when the front wheel brake operation element 4 and the rear wheel brake operation element 5 are strongly input simultaneously, the first rotation 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 42c, 42c are in contact with the seating surface 27a of the stopper bolt 27 and the rotation is restricted, the equalizer lever 44 rotates about the connecting pin 30 and the rear wheel brake The wire 10 is pulled and the rear wheel brake 3 is operated strongly.

  In the present embodiment, as described above, since the second turning lever contact surface 43f of the knocker 43 and the adjustment bolt contact surface 43d are formed as a continuous surface, the shape of the knocker 43 is made more than conventional. The master cylinder unit 20 can be reduced in size while being able to be made simple and small. Further, a first rotation lever abutting surface 43d is formed on the lower surface of the piston pushing portion 43b, and a protrusion 43e protruding in the direction of the second turning lever 42 is provided below the piston pushing portion 43b. By forming the second rotation lever contact surface 43f on the lower surface of the protrusion 43e, the first rotation lever contact surface 43d and the second rotation lever contact surface 43f are easily formed. can do. Further, since the first rotation lever contact surface 43d is formed by the outer end surface of the head portion 45a of the bolt member 45 embedded in the knocker 43, the adjustment bolt 29 is repeatedly moved to the first rotation lever by repeating the operation. Even if it contacts the contact surface 43d, the first rotating lever contact surface 43d does not wear, so that the master cylinder unit 20 can always be operated with high accuracy.

  FIG. 15 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 master cylinder unit 20 of the present embodiment includes a first rotating lever abutting surface 43d formed by the outer end surface of the head 45a of the bolt member 45 embedded in the knocker 43, and a knocker pushing operation of the second rotating lever 42. The second turning lever contact surface 43g pushed by the portion 42e is formed on the same plane.

  By forming the present embodiment as described above, the shape of the knocker 43 can be simplified, and the manufacturing cost can be reduced.

  Note that the present invention is not limited to the case where the first rotating lever contact surface is formed by the head of the bolt member embedded in the knocker as in each of the above-described embodiments, and the first rotation lever is attached to the outer end of the knocker. A moving lever contact surface may be formed. Furthermore, the 1st brake connection means of this invention, the 2nd brake connection means, and the mechanical brake connection means are not restricted to a brake wire like the above-mentioned form example. 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 ... Anchor pin, 4 ... Front wheel brake operator, 4a ... Operating lever, 5 ... Brake operator for rear wheel, 5a ... Operating lever, 6 ... Handle bar, 7 ... First brake wire, 8 ... Hydraulic pipe, 9 ... Second brake wire, 10 ... Brake wire for rear wheel , 11 ... reservoir, 12 ... piping, 20 ... master cylinder unit, 21 ... hydraulic master cylinder, 21a ... cylinder body, 21b ... cylinder hole, 21c ... raised portion, 21d ... boss hole, 21e ... first wire guide portion, 21f ... 2nd wire guide part, 21g ... bolt hole, 21h ... engagement piece, 21i ... lever holder, 21j ... stopper bolt mounting boss part, 2 k: second rotating lever contact surface, 21 m: rear wheel brake wire guide part, 22: piston, 22a ... circlip, 23 ... banjo, 24 ... banjo bolt, 25 ... liquid passage pipe, 25a ... first pipe Part, 25b ... second pipe part, 26 ... delay spring, 26a ... attachment part, 26b ... winding part, 27 ... stopper bolt, 27a ... seat surface, 28 ... fixing pin, 29 ... adjustment bolt, 30 ... connection pin, DESCRIPTION OF SYMBOLS 40 ... Lever mechanism, 41 ... 1st turning lever, 41a ... Turning base, 41b ... Adjust bolt attachment part, 41c ... 1st brake wire connection part, 42 ... 2nd turning lever, 42a ... Turning base, 42b ... connecting arm, 42c ... clamping piece, 42d ... engagement protrusion, 42e ... knocker pushing part, 42f ... body abutting surface, 43 ... knocker, 43a ... turning base, 43b ... piston pushing part, 3c ... Piston contact portion, 43d ... Adjust bolt contact surface, 43e ... Projection, 43f ... Second rotation lever contact surface, 43g ... Second rotation lever contact surface, 44 ... Equalizer lever, 44a ... First 2 turning lever connecting portion, 44b ... rear wheel brake wire connecting portion, 44c ... second brake wire connecting portion, 45 ... bolt member, 45a ... head

Claims (4)

One of the front wheel brake and the rear wheel brake is a hydraulic brake, the other is a mechanical brake, and a master cylinder unit formed by combining a hydraulic master cylinder and a lever mechanism by operating the first brake operator. The hydraulic brake is operated independently, and the hydraulic brake and the mechanical brake are operated in conjunction with each other via the master cylinder unit by operating the second brake operator,
The lever mechanism includes a first rotation lever, a second rotation lever, a knocker, and an equalizer lever, and connects a first brake connecting means connected to the first brake operator to the first rotation lever. By operating the first brake operator, the piston of the hydraulic master cylinder is operated via the knocker in which the first rotating lever is pushed, and the hydraulic brake is operated independently, and the equalizer The lever is connected to second brake connecting means connected to the second brake operator, mechanical brake side connecting means connected to the mechanical brake, and the second rotating lever, and the second brake operator is connected to the lever. By operating, the mechanical brake side connecting means is pulled through the equalizer lever to operate the mechanical brake, and the equalizer lever is moved forward. A bar handle that rotates the second rotation lever and operates the piston of the hydraulic master cylinder via the knocker that the second rotation lever pushes to operate the hydraulic brake in conjunction. In a vehicle brake device,
The knocker abuts against a pivot base that is pivotably attached to a cylinder body of the hydraulic master cylinder, a piston pushing portion that abuts against the piston and operates the piston, and a first pivot lever. A first rotation lever abutting surface pushed by the first rotation lever and a second rotation lever abutting on the second rotation lever and pushed by the second rotation lever A bar handle vehicle brake device comprising: a contact surface, wherein the second rotation lever contact surface and the first rotation lever contact surface are formed as a continuous surface. The knocker has a first rotating lever abutting surface formed on a lower surface of the piston pushing portion, and a protrusion projecting in the direction of the second turning lever below the piston pushing portion. The bar handle vehicle brake device according to claim 1, wherein the second rotating lever contact surface is formed on a lower surface of the protrusion. The bar handle vehicle brake device according to claim 1, wherein the first rotating lever contact surface is formed by a head portion of a bolt member embedded in the knocker. 4. The bar handle vehicle brake device according to claim 1, wherein the first rotation lever contact surface and the second rotation lever contact surface are formed on the same surface. 5. .

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