JP2016037053A - Brake device for bar handle vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a brake device for a bar handle vehicle, which can be used commonly for brake devices of different setting while changing a connection structure of a lever mechanism of a master cylinder unit equipped with the same parts.SOLUTION: In an equalizer lever 27 of a master cylinder 21, a second connection part A2 at the center is connected to a second brake wire 9 connecting to a second brake bar, a third connection part A3 at one end is connected to a second rotation lever 25, and a fourth connection part A4 at the other end is connected to a rear wheel brake wire 10 connecting to a rear brake 3. A first connection part A1 is formed of pin fitting holes, which are respectively formed in a first rotation lever 24, the second rotation lever 25, a knocker 26 and the body of the master cylinder unit 21, and fixing pins 34 inserted in the pin fitting holes. In the non-operation state of the master cylinder unit 21, the first connection part A1 and the fourth connection part A4 are arranged on the same straight line.SELECTED DRAWING: Figure 1

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, 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 one brake lever. In some cases, the hydraulic brake is operated independently, and the mechanical brake is operated by operating the other brake lever, and the hydraulic brake is operated in conjunction with the master cylinder unit. As a lever mechanism of the master cylinder unit, a first rotation lever, a second rotation lever, a knocker and an equalizer lever are provided, and a first rotation lever and a knocker which are rotated by operation of the first brake operator, The hydraulic brake is operated, and an equalizer lever that is rotated by operation of the second brake operator, a second rotation lever, and a knocker operate both brakes in conjunction with each other (for example, Patent Documents). 1).

  In addition, an equalizer lever is connected to the brake pedal, a master cylinder unit is arranged around the brake pedal, the hydraulic brake is operated independently by operating the brake lever, and the mechanical brake is operated by operating the brake pedal. At the same time, there is one that operates a hydraulic brake in conjunction with each other via an equalizer lever and a master cylinder unit (see, for example, Patent Document 2).

JP 2009-202650 A JP 2010-235033 A

  However, in the case of brake devices having different settings, such as the master cylinder unit of Patent Document 1 and the master cylinder unit of Patent Document 2, the master cylinder unit is shared because the members connected to the lever mechanism are different. The master cylinder unit had to be manufactured individually and the productivity was not good.

  SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a bar handle vehicle brake device that can be used also as a brake device with different settings by changing the coupling structure of the lever mechanism of the master cylinder unit having the same components. It is said.

  In order to achieve the above object, a brake apparatus for a bar handle vehicle according to the present invention has a hydraulic brake as one of a front wheel brake and a rear wheel brake, and a mechanical brake as the other, and is operated by operating a first brake operator. The hydraulic brake is operated independently through a master cylinder unit formed by combining a pressure master cylinder and a lever mechanism, and the mechanical brake is operated by operating a second brake operator, and the master The hydraulic brake is operated in an interlocked manner via a cylinder unit, and the lever mechanism includes a first rotation lever, a second rotation lever, a knocker, and an equalizer lever, and the first rotation lever and the first rotation lever. 2 The pivot lever and the knocker are pivotably connected to the body of the master cylinder unit via the first connecting portion. The first rotation lever is connected to a first brake linking means connected to the first brake operator, and the second rotation lever includes a knocker pushing portion for pushing the knocker, The equalizer lever is provided with a second connecting portion at the center, a third connecting portion at one end, and a fourth connecting portion at the other end, and a second brake connecting means connected to the second brake operator at the second connecting portion. In the bar handle vehicle brake device, the second connecting lever is connected to the third connecting portion, and the mechanical brake connecting means connecting to the mechanical brake is connected to the fourth connecting portion. A pin mounting hole formed in the first rotating lever, the second rotating lever, the knocker, and the body of the master cylinder unit, and a fixed pin inserted through the pin mounting hole. To, in the inoperative state of the master cylinder unit, wherein the first connecting portion and the fourth connecting portion, and being disposed on the same straight line.

  Moreover, it is preferable that the fourth connecting portion includes a pin insertion hole, and the pin insertion hole and the pin mounting hole can be connected by a connecting shaft member.

  Further, the pin insertion hole of the fourth connection portion can selectively mount the mechanical connection means and the connection shaft member, and the fourth connection portion communicates with the pin insertion hole, It is preferable that a guide groove serving as an insertion guide for the mechanical brake connecting means is provided.

  According to the bar handle vehicle brake device of the present invention, the first connecting portion includes a pin mounting hole formed in the first rotating lever, the second rotating lever, the knocker, and the body of the master cylinder unit, and the pin mounting. The first connecting portion and the fourth connecting portion provided on the equalizer lever are arranged on the same straight line when the master cylinder unit is in an inoperative state. The connection structure between the connection portion and the fourth connection portion can be easily changed, and the master cylinder unit having the same parts can be used also as a brake device with different settings.

  In addition, the fourth connection portion includes a pin insertion hole, and the first connection portion and the fourth connection portion can be selectively connected by connecting the pin insertion hole and the pin mounting hole of the first connection portion with a connecting shaft member. The master cylinder unit having the same components can be easily applied to brake devices having different settings. Further, the pin insertion hole of the fourth connection portion can selectively mount the mechanical connection means and the connection shaft member, and the fourth connection portion communicates with the pin insertion hole, and the mechanical brake connection means. By providing a guide groove serving as an insertion guide, the setting of the master cylinder unit can be easily changed depending on whether the mechanical brake linking means is connected to the fourth connecting portion or the connecting shaft member is inserted. At the same time, parts can be shared.

It is explanatory drawing of the brake device for bar handle vehicles which shows one example of this invention. It is a partial cross section side view of a master cylinder unit similarly. It is a front view of a master cylinder unit similarly. It is a back view of a master cylinder unit similarly. It is VV sectional drawing of FIG. It is explanatory drawing of a master cylinder unit when operating the 1st brake lever which shows the one example of this invention, and act | operating the front wheel independently. It is explanatory drawing of a master cylinder unit when operating a 2nd brake lever and operating a front wheel in conjunction with a rear wheel similarly. Similarly, after operating the second brake lever to operate the front wheels together with the rear wheels, it is an explanatory view of the master cylinder unit when the operation of the front wheels is restricted. Similarly, after operating the second brake lever to operate the front wheels together with the rear wheels, it is an explanatory view of the master cylinder unit when the operation of the front wheels is restricted. It is a figure of a master cylinder unit when the 1st brake lever and the 2nd brake lever are operated simultaneously. It is explanatory drawing of the brake device for bar handle vehicles at the time of applying to the brake device from which the setting differs by changing the connection structure of the lever mechanism of a master cylinder unit. It is a front view of a master cylinder unit similarly. It is a back view of a master cylinder unit similarly. It is a side view of a master cylinder unit similarly. It is XV-XV sectional drawing of FIG. It is explanatory drawing of a master cylinder unit when operating a brake lever similarly and operating the front wheel independently. It is explanatory drawing of a brake device when operating a brake pedal similarly and operating a front wheel together with a rear wheel. Similarly, after operating the brake pedal to operate the front wheel together with the rear wheel, the operation of the front wheel is restricted and the brake device is illustrated. FIG. 5 is an explanatory view of the master cylinder unit when the operation of the front wheel is restricted after the front pedal is operated in conjunction with the rear wheel by operating the brake pedal. It is explanatory drawing of a brake device when operating a brake lever and a brake pedal simultaneously.

  FIG. 1 to FIG. 10 show an embodiment of the brake device for a bar handle vehicle according to the present invention. As shown in FIG. 1, the brake device 1 for a bar handle vehicle of this embodiment includes a front wheel brake 2 and a rear brake. A wheel brake 3, a first brake lever 4 (first brake operator of the present invention) that operates the front wheel brake 2 independently, and a second brake lever 5 that operates the front wheel brake 2 in conjunction with the rear wheel brake 3 ( A master cylinder unit 21 is interposed between the front wheel brake 2, the first brake lever 4, the rear wheel brake 3 and the second brake lever 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 as shown in FIG. 1, the first brake lever 4 side is the right side, 2 The brake lever 5 side will be described as the left side. Similarly, description of clockwise and counterclockwise directions will be described as directions with respect to the front view.

  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 first brake lever 4 is attached to the right side of the handle bar 6, and by operating the first brake lever 4, the first brake wire 7 (the first brake connecting means of the present invention) is pulled, and the master cylinder unit The hydraulic master cylinder 22 is operated to supply hydraulic pressure to the front wheel brake 2 via the hydraulic pipe 8, and the front wheel brake 2 is operated independently.

  The second brake lever 5 is attached to the left side of the handle bar 6, and by operating the second brake lever 5, the second brake wire 9 (second brake connecting means of the present invention) is pulled, and the master cylinder unit The rear wheel brake 3 is actuated by pulling the rear wheel brake wire 10 (the mechanical brake linking means of the present invention) that operates the rear wheel brake 3 via 21, and the hydraulic master cylinder of the master cylinder unit 21 is operated. 22 is operated, hydraulic pressure is supplied to the front wheel brake 2 via the hydraulic pressure pipe 8, and the front wheel brake 2 is operated in conjunction with it.

  The master cylinder unit 21 includes the hydraulic master cylinder 22 that supplies hydraulic pressure to the front wheel brake 2 and a lever mechanism 23. The lever mechanism 23 includes a first rotation lever 24 and a second rotation lever 25. And a knocker 26 and an equalizer lever 27.

  The hydraulic master cylinder 22 is provided with a bottomed cylinder hole 22b in the cylinder body 22a with a lower end opened, and a union boss part 22c is projected from the bottom side of the cylinder hole 22b. On the right side of the cylinder body 22a, a boss portion 22d having a fluid passage hole communicating with the cylinder hole 22b is projected, and a connector 28 connected to a reservoir via a seal member is attached to the boss portion 22d. ing. A piston 29 is inserted into the cylinder hole 22b, and a hydraulic pressure chamber 30 is defined between the piston 29 and the bottom of the cylinder hole 22b. A union hole communicating with the hydraulic pressure chamber 30 is formed in the union boss part 22c, and the hydraulic pipe 8 is connected to the union boss part 22c via a banjo 31 and a banjo bolt 32 attached to the union hole, The hydraulic chamber 30 and the caliper body 2b of the front wheel brake communicate with each other through the hydraulic pipe 8.

  The upper wall of the cylinder body 22a is formed with an upper bracket 22e having a rectangular shape in a plan view projecting to the front side and the left side of the upper wall, and the union boss portion 22c is formed on the rear side of the upper bracket 22e and on the right side. The first wire guide portion 22f for guiding the first brake wire 7 on the left side of the union boss portion 22c, and the second wire guide portion 22g for guiding the second brake wire 9 on the front side of the union boss portion 22c A stopper bolt mounting portion 22h for mounting a stopper bolt 33 for restricting the rotation of the second rotation lever 25 is provided on the left side of the second wire guide portion 22g, and the stopper bolt 33 is provided with a stopper bolt 33 on the stopper bolt mounting portion 22h. It is fixed in a state of projecting a predetermined length downward.

  A pair of lever holders 22i and 22i project from the front and back sides of the cylinder body 22a in the vicinity of the opening of the cylinder hole, and the lever holders 22i and 22i have a fixing pin 34 (in accordance with the present invention). A through hole 22j (pin mounting hole of the present invention) for mounting the connecting shaft member and a female screw hole 22k (pin mounting hole of the present invention) are formed coaxially. Further, a rear wheel brake wire guide portion 22m protrudes from the lower end portion of the lever holder 22i on the front side. The rear wheel brake wire guide portion 22m has a contact with the second turning lever 25 on the left side surface. A second rotation lever abutting surface 22n that is in contact with and sets the initial position of the second rotation lever 25 is provided.

  The lever mechanism 23 has a bifurcated second turning base 25a formed on the second turning lever 25 between the lever holders 22i and 22i, and a knocker on the front side inside the second turning base 25a. The first rotation base 24a formed on the first rotation lever 24 is disposed on the back side, and the lever holders 22i and 22i and the first rotation base 24a are disposed on the back side. The first connecting portion A1 is formed by inserting and fixing the fixing pin 34 over the second rotating base 25a and the third rotating base 26a, and on the front side of the lever holder 22i, An equalizer lever 27 is disposed above the wheel brake wire guide portion 22m.

  The first rotation lever 24 has an adjustment bolt mounting portion from the first rotation base 24a provided with the insertion hole 24b (pin mounting hole of the present invention) of the fixing pin 34 toward the lower side of the opening of the cylinder hole 22b. 24c is extended and the adjustment bolt 35 which contact | abuts to the knocker 26 is attached to this adjustment bolt mounting part 24c so that protrusion amount can be adjusted using the nut member 35a. Furthermore, the 1st brake wire connection part 24d which connects the edge part of the 1st brake wire 7 is provided in the back side of the adjustment bolt attaching part 24c.

  The second rotation lever 25 includes the second rotation base 25a formed in a bifurcated shape, each having an insertion hole 25b (pin mounting hole of the present invention) of the fixing pin 34, and a second rotation base on the front side. A delay spring mounting portion 25d projects from the upper end portion of the equalizer connecting arm 25c. The equalizer connecting arm 25c is formed in a block shape with the equalizer connecting arm 25c projecting upward through a connecting portion extending from the lower portion of 25a. Has been. Further, a knocker pushing surface 25e that abuts against the knocker 26 and pushes the knocker 26 is formed on the lower left side of the second rotation base portion 25a on the back side. A guide contact surface 25f that sets the initial position of the second rotation lever 25 is formed in contact with the second rotation lever contact surface 22n provided on the wheel brake wire guide portion 22m.

  The delay spring 36 is formed of a compression type coil spring, and the upper end side is mounted on the upper bracket 22e and the lower end side is mounted on the delay spring mounting portion 25d of the second rotating lever 25, respectively.

  The knocker 26 is formed with a piston pushing portion 26c that is always in contact with the lower end portion of the piston 29 on the left side of the third rotation base portion 26a provided with the insertion hole 26b (pin mounting hole of the present invention) of the fixing pin 34. ing. A head portion of a pin member 37 embedded in the knocker 26 is disposed on the lower surface of the piston pushing portion 26 c, and an outer end surface of the head portion contacts the adjustment bolt 35. Further, on the back side of the head, a receiving surface 26d that is pushed by the knocker pushing surface 25e formed on the second turning lever 25 is in contact with the knocker pushing surface 25e with a slight clearance.

  The equalizer lever 27 has a second connecting portion A2 that connects the second brake wire 9 at the center, a third connecting portion A3 that connects to the equalizer connecting arm 25c of the second rotating lever 25 at one end, and a rear end at the other end. A fourth connection portion A4 for connecting the wheel brake wire 10 is provided. The second connecting portion A2 includes a second brake wire mounting hole 27a into which the cylindrical portion 9a provided at the tip of the second brake wire 9 can be inserted, and a guide groove for guiding the cylindrical portion 9a to the second brake wire mounting hole 27a. 27b, and the fourth connecting portion A4 is provided with a rear wheel brake wire that can be inserted into the cylindrical portion 10a formed at the tip of the rear wheel brake wire 10 and having the same diameter as the fixing pin 34. A hole 27c (the pin insertion hole of the present invention) and a guide groove 27d for guiding the cylindrical portion 10a are provided in the rear wheel brake wire mounting hole 27c.

  The first rotation lever 24, the second rotation lever 25, and the knocker 26 described above include the first rotation base 24a, the second rotation base 25a, and the third rotation base 26a as lever holders 22i and 22i. The first connecting portion A1 is formed by inserting the fixing pin 34 through the through hole 22j, the through holes 24b, 25b, and 26b and through the female screw hole 22k and mounting the pin. A first rotation lever 24, a second rotation lever 25, and a knocker 26 are rotatably connected between the holders 22i and 22i.

  Furthermore, it is connected to one end of the equalizer lever 27 via the connecting pin 38 to the equalizer connecting arm 25c of the second rotating lever 25 to form a third connection portion A3, and is pulled in via the second wire guide portion 22g. The cylindrical portion 9a of the second brake wire 9 is attached to the second brake wire attachment hole 27a via the guide groove 27b of the equalizer lever 27, thereby forming the second connection portion A2. Further, the cylindrical portion 10a of the rear wheel brake wire 10 drawn through the rear wheel brake wire guide portion 22m is mounted in the rear wheel brake wire mounting hole 27c through the guide groove 27d of the equalizer lever 27. Four connecting portions A4 are formed. In addition, the first brake wire 7 drawn through the first wire guide portion 22f is connected to the first brake wire connecting portion 24d of the first rotating lever 24. By assembling the lever mechanism 23 in this way, the first connection portion A1 and the fourth connection portion A4 are arranged on the same straight line L1.

  In the brake device 1 formed as described above, when the first brake lever 4 is operated, the first brake wire 7 is pulled as shown in FIG. The wire connecting portion 24d is pulled upward, and the first rotation lever 24 rotates counterclockwise about the first rotation base 24a. Along with this, the adjustment bolt 35 pushes the head of the pin member 37 embedded in the knocker 26, turns the knocker 26 counterclockwise around the third turning base 26a, and pushes the piston. The portion 26c pushes the piston 29. 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 second brake lever 5 is operated, first, as shown in FIG. 7, the second brake wire 9 is pulled, and the entire equalizer lever is moved upward via the second connection portion A2 of the equalizer lever 27. Towed. Along with this, the rear wheel brake wire 10 connected to the fourth connection portion A4 is pulled, and the rear wheel brake 3 starts to operate, and at the same time, the third connection portion A3 of the equalizer lever 27 is connected to the third connection portion A3. The equalizer connecting arm 25c of the two-turning lever 25 is also pulled upward, and the second turning lever 25 rotates counterclockwise around the second turning base 25a against the elastic force of the delay spring 36. When the knocker pushing surface 25e comes into contact with and pushes against the receiving surface 26d of the knocker 26, the piston 29 is pushed and the pressurized hydraulic fluid is applied to the front wheel brake 2 via the hydraulic pipe 8. Fluid pressure is supplied and the front wheel brake 2 is operated in conjunction.

  When the second brake lever 5 is further operated, as shown in FIGS. 8 and 9, the equalizer lever 27 is further pulled upward, and the second rotation lever 25 moves the second rotation base 25a. The delay spring mounting portion 25d abuts against the tip of the shaft portion of the stopper bolt 33, and the rotation of the knocker 26 is stopped and the rotation of the knocker 26 is stopped. Pressure supply is regulated. When the second brake lever 5 is operated more strongly, the delay spring mounting portion 25d comes into contact with the tip end of the shaft portion of the stopper bolt 33, and the rotation of the second rotation lever 25 is restricted. Since the position of the pin 38 is fixed, the equalizer lever 27 rotates clockwise about the connecting pin 38, pulls only the rear wheel brake wire 10, and operates the rear wheel brake 3 more strongly.

  Further, as shown in FIG. 10, when the first brake lever 4 and the second brake lever 5 are strongly input simultaneously, the first rotating lever 24 is rotated independently by being pulled by the first brake wire 7. As a result, the piston 29 is pushed to actuate the front wheel brake 2 strongly, and the movement of the equalizer lever 27 pulled by the second brake wire 9 causes the second turning lever 25 to delay as described above. After the spring mounting portion 25d comes into contact with the tip of the shaft portion of the stopper bolt 33 and the rotation of the second rotation lever 25 is restricted, the equalizer lever 27 rotates about the connecting pin 38. Thus, the rear wheel brake wire 10 is pulled to actuate the rear wheel brake 3 strongly.

  11 to 20 show examples in which the coupling structure of the lever mechanism 23 of the master cylinder unit 21 used in the above-described embodiment is changed and applied to other brake devices 41 having different settings. Components that are the same as those in the embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  The lever mechanism 23 used in the brake device 41 is the same as the first rotating lever 24, the second rotating lever 25, the knocker 26, the equalizer lever 27, and the above-described embodiment. Is also composed of a long fixing pin 34a. Instead of the fixing pin 34a of the previous embodiment, the lever holders 22i, 22i, the first rotating base 24a of the first rotating lever 24, the first The second rotation base 25a of the two rotation lever, the third rotation base 26a of the knocker 26, and the pin insertion hole 27e provided in the fourth connection portion A4 of the equalizer lever 27 (the rear wheel brake described above) It is inserted and fixed over the same as the wire mounting hole 27c.

  The brake device 41 includes the master cylinder unit 21 in which the coupling structure of the lever mechanism 23 is changed as described above, the front wheel brake 2 and the rear wheel brake 3, the brake lever 42 (the first brake operator of the present invention), the brake Pedal 43 (the second brake operator of the present invention).

  The brake pedal 43 is pivotally supported on the vehicle body by a fixed shaft 44, and a stepping portion 43a is provided at the tip, and the connecting member 45 can be brought into contact with and separated from the rear wheel brake side of the base end 43b. Has been placed. The outer tube 9b of the second brake wire 9 is connected to the anti-rear wheel brake side of the base end part 43b, and the rear wheel brake side of the base end part is inserted through the insertion hole 43c formed in the base end part 43b. The wire body 9 c protrudes, and the protruding end of the wire body 9 c is connected to the connecting member 45. The connecting member 45 has one end side connected to the wire body 9c and the other end connected to a rear wheel brake rod 46. Further, the vehicle body has a stopper projection that abuts the connecting member 45 at the initial position of the brake pedal 43, restricts rotation of the connecting member 45 in the direction opposite to the operation direction, and sets the initial position of the connecting member 45. 47 is provided.

  In the brake device 41, when the brake lever 42 is operated, the first brake wire 7 pulls the first rotation lever 24 as shown in FIG. As a result, the first rotation lever 24 rotates about the first rotation base 24 a to push the knocker 26, and the knocker 26 pushes the piston 29 of the hydraulic master cylinder 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 brake pedal 43 is operated, first, as shown in FIG. 17, the brake pedal 43 rotates in the direction of arrow A, and the connecting member 45 is kept in contact with the brake pedal 43 while being integrated. And the rear wheel brake rod 46 is pulled to actuate the rear wheel brake 3. At this time, the outer tube 9 b and the wire main body 9 c of the second brake wire 9 are gradually bent between the brake pedal 43 and the master cylinder unit 21.

  When the brake pedal 43 is further operated and a reaction force from the rear wheel brake 3 acts, as shown in FIGS. 18 and 19, a force is generated in the wire body 9c to return to the initial state, and the wire body By projecting 9c in the arrow B direction, the connecting member 45 is separated from the base end portion 43b, and the second brake wire 9 is pulled. When the second brake wire 9 is pulled, the equalizer lever 27 rotates around the fixed pin 34a inserted through the pin insertion hole 27e, and, similarly to the above-described embodiment, the second rotation lever 25 is The piston 29 rotates against the resilient force of the delay spring 36 around the second rotation base 25a, and the knocker pushing surface 25e abuts against the receiving surface 26d of the knocker 26 to push it. The hydraulic fluid that has been pushed and increased in pressure supplies hydraulic pressure to the front wheel brake 2 via the hydraulic pressure pipe 8 to operate the front wheel brake 2 in conjunction with each other. Further, when the brake pedal 43 is operated, the second turning lever 25 comes into contact with the stopper bolt 33 and the turning is restricted, the supply of hydraulic pressure to the front wheel brake 2 is stopped, and only the rear wheel brake 3 is operated. Operate strongly.

  As shown in FIG. 20, when the brake pedal 43 and the brake lever 42 are strongly operated simultaneously, the first rotation lever 24 is rotated independently by being pulled by the first brake wire 7, The piston 29 is pushed and the front wheel brake 2 is actuated strongly, and the second rotating lever 25 is rotated by contacting the stopper bolt 33 with the connecting member 45 as described above. Is regulated, the rear wheel brake 3 is operated.

  In this way, the fourth cylinder connecting portion of the master cylinder unit equipped with the same components is selectively connected to either the rear wheel brake wire or the fixing pin. The master cylinder unit can be applied to brake devices having different settings, and the versatility of the master cylinder unit can be improved. In addition, the fourth connecting portion is provided with a pin insertion hole and a guide groove serving as an insertion guide for the mechanical brake linking means, so that parts connected to the fourth connecting portion can be connected to the rear wheel brake wire and the fixing pin. Since it can be easily changed and parts can be shared, the cost can be reduced.

  In addition, this invention is not restricted to the above-mentioned form example, The 4th connection part of an equalizer lever and the 1st connection part provided in the hydraulic-pressure master cylinder side are the connection shaft members different from a fixed pin, and can selectively It may be connected. Furthermore, the structure of the first brake operator and the second brake operator is arbitrary, and if one brake is hydraulic and the other brake is mechanical, the structure of both brakes is also arbitrary. Also, the pin insertion hole and the rear wheel brake wire mounting hole can be individually formed in the fourth connecting portion of the equalizer lever.

  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 ... 1st brake lever, 5 ... Second brake lever, 6 ... handlebar, 7 ... first brake wire, 8 ... hydraulic pipe, 9 ... second brake wire, 9a ... cylindrical portion, 9b ... outer tube, 9c ... wire body, 10 ... for rear wheel Brake wire, 10a ... cylindrical part, 21 ... master cylinder unit, 22 ... hydraulic master cylinder, 22a ... cylinder body, 22b ... cylinder hole, 22c ... union boss part, 22d ... boss part, 22e ... upper bracket, 22f ... 1 wire guide part, 22g ... 2nd wire guide part, 22h ... stopper bolt mounting part, 22i ... lever holder, 22j Through hole, 22k ... female screw hole, 22m ... rear wheel brake wire guide, 22n ... second rotating lever contact surface, 23 ... lever mechanism, 24 ... first rotating lever, 24a ... first rotating base, 24b ... Insertion hole, 24c ... Adjust bolt mounting part, 24d ... First brake wire connecting part, 25 ... Second rotating lever, 25a ... Second rotating base, 25b ... Inserting hole, 25c ... Equalizer connecting arm, 25d ... Delay Spring mounting portion, 25e ... knocker pushing surface, 25f ... guide surface abutting surface, 26 ... knocker, 26a ... third rotating base, 26b ... insertion hole, 26c ... piston pushing portion, 26d ... receiving surface, 27 ... Equalizer lever, 27a ... second brake wire mounting hole, 27b ... guide groove, 27c ... rear wheel brake wire mounting hole, 27d ... guide groove, 27e ... pin insertion hole, 28 ... connector, 2 ... Piston, 30 ... Hydraulic chamber, 31 ... Banjo, 32 ... Banjo bolt, 33 ... Stopper bolt, 34, 34a ... Fixing pin, 35 ... Adjust bolt, 35a ... Nut member, 36 ... Delay spring, 37 ... Pin member, DESCRIPTION OF SYMBOLS 38 ... Connection pin, 41 ... Brake device, 42 ... Brake lever, 43 ... Brake pedal, 43a ... Foot pedal part, 43b ... Base end part, 43c ... Communication hole, 44 ... Fixed shaft, 45 ... Connection member, 46 ... Rear wheel Brake rod, 47 ... protrusion for stopper, A1 ... first connection, A2 ... second connection, A3 ... third connection, A4 ... fourth connection

Claims (3)

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. Operating the hydraulic brake alone, operating the mechanical brake by operating a second brake operator, and operating the hydraulic brake in conjunction with the master cylinder unit,
The lever mechanism includes a first rotation lever, a second rotation lever, a knocker, and an equalizer lever, and the first rotation lever, the second rotation lever, and the knocker are the bodies of the master cylinder unit. Are connected to each other via a first connecting portion so as to be rotatable,
The first rotating lever is connected to a first brake connecting means connected to the first brake operator,
The second rotation lever includes a knocker pushing portion that pushes the knocker,
The equalizer lever is provided with a second connecting portion at the center, a third connecting portion at one end, and a fourth connecting portion at the other end, and a second brake connecting means connected to the second brake operator at the second connecting portion. In the brake apparatus for a bar handle vehicle, the second connecting lever is connected to the third connecting portion, and the mechanical brake connecting means connected to the mechanical brake is connected to the fourth connecting portion.
The first connecting portion includes a pin mounting hole formed in the first rotating lever, the second rotating lever, the knocker, and a body of the master cylinder unit, and a fixing pin inserted through the pin mounting hole. And the first connecting portion and the fourth connecting portion are arranged on the same straight line when the master cylinder unit is in an inoperative state.   The bar handle vehicle brake device according to claim 1, wherein the fourth connecting portion includes a pin insertion hole, and the pin insertion hole and the pin mounting hole can be connected by a connecting shaft member.   The pin insertion hole of the fourth connection portion can selectively attach the mechanical connection means and the connection shaft member, and the fourth connection portion communicates with the pin insertion hole, The bar handle vehicle brake device according to claim 2, further comprising a guide groove serving as an insertion guide for the brake connecting means.

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