JP2016124486A - Interlocking braking device for bar handle vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain excellent operational feeling and to configure an equalizer mechanism simple and compact in an interlocking braking device for a bar handle vehicle including a brake operator rotatably supported by a support part fixed to a bar handle via an operator support shaft, a mechanical brake operated by traction of an interlocking means, a master cylinder fitted to the bar handle, a hydraulic brake operated by the output hydraulic pressure of the master cylinder, and an equalizer mechanism capable of transmitting the operation force of the brake operator to both the interlocking means and the master cylinder.SOLUTION: An equalizer mechanism 18 has an equalizer arm 31 rotatably supported by a brake operator 12 via an equalizer support shaft 30. In the equalizer arm 31, a connection part 31b to which an interlocking means 15 is connected, and a pressing part 31c for pressing a piston rod 21 included in a master cylinder M are integrally provided.SELECTED DRAWING: Figure 2

Description

  The present invention provides a brake operating element that is rotatably supported by a support portion fixed to a bar handle via an operating element support shaft, a mechanical brake that is operated by towing a connecting means, and is attached to the bar handle. Interlocking of a bar handle vehicle comprising a master cylinder, a hydraulic brake that operates with the output hydraulic pressure of the master cylinder, and an equalizer mechanism that can transmit the operating force of the brake operator to both the linking means and the master cylinder The present invention relates to a brake device.

  Patent Document 1 discloses an interlocking brake device in which a front brake and a rear wheel brake are operated by an equalizer mechanism that operates in conjunction with a brake operator that is rotatably supported by a bar handle. And Patent Document 2.

Japanese Patent No. 3673055 Japanese Patent No. 4801825

  In the one disclosed in Patent Document 1, since there are two fulcrums of the brake operator and the operation direction of the brake operator is changed, the vehicle driver may feel uncomfortable during the operation. Moreover, in what was disclosed by the said patent document 2, the number of parts which comprise an equalizer mechanism is large, and there exists a subject that the structure of an interlocking brake device becomes complicated and enlarged.

  The present invention has been made in view of such circumstances, and provides an interlocking brake device for a bar handle vehicle that can provide an excellent operational feeling and can easily and compactly configure an equalizer mechanism. For the purpose.

  In order to achieve the above-described object, the present invention provides a brake operation element that is rotatably supported by a support portion fixed to a bar handle via an operation element support shaft, and a mechanical brake that is operated by towing the connecting means. A master cylinder attached to the bar handle, a hydraulic brake that operates with the output hydraulic pressure of the master cylinder, and an equalizer mechanism that can transmit the operating force of the brake operator to both the linking means and the master cylinder In the interlocking brake device for a bar handle vehicle, the equalizer mechanism has an equalizer arm that is rotatably supported by the brake operator via an equalizer support shaft, and the connecting means is connected to the equalizer arm. There are provided a connecting portion to be connected and a pressing portion for pressing the piston rod included in the master cylinder. The the first feature.

  In addition to the configuration of the first feature, the present invention has a second feature that the equalizer support shaft is disposed at a position farther from the bar handle than the connecting portion.

  According to the present invention, in addition to the configuration of the first or second feature, the support portion is integrally provided in a cylinder body of the master cylinder, and the brake operation element is disposed on an axial extension line of the piston rod. A third feature is that the support portion is rotatably supported by the operating element support shaft.

  In the present invention, in addition to the configuration of the third feature, the pressing portion is disposed between the operating element support shaft and the piston rod, and extends from the coupling portion to the bar handle side. A fourth feature is that the equalizer arm is provided.

  Furthermore, the present invention is characterized in that, in addition to the configuration of the fourth feature, the equalizer support shaft is disposed closer to the master cylinder than the coupling portion in the longitudinal direction of the bar handle.

  According to the first feature of the present invention, the brake operator is rotatably supported by the support portion via the operator support shaft, and the equalizer arm of the equalizer mechanism is rotatably supported by the brake operator. Since this equalizer arm is provided with a connecting portion to which the connecting means is connected and a pressing portion for pressing the piston rod of the master cylinder, the operational feeling of the brake operator is excellent with a constant operating direction of the brake operator. In addition, the equalizer mechanism can be easily configured and made compact.

  According to the second feature of the present invention, since the equalizer support shaft is disposed at a position farther from the bar handle than the connecting portion, the connecting means and the master cylinder can be disposed close to the bar handle.

  According to the third feature of the present invention, the brake operation element can be rotated via the operation element support shaft arranged on the axis extension line of the piston rod in the support portion provided integrally with the cylinder body of the master cylinder. Since it is supported, the brake operation element and the equalizer mechanism can be compactly arranged around the master cylinder while avoiding interference with other parts arranged near the bar handle.

  According to the fourth feature of the present invention, since the pressing portion is disposed between the operation element support shaft and the piston rod, the brake operation element and the equalizer mechanism can be disposed closer to the master cylinder and can be disposed in a compact manner.

  Further, according to the fifth feature of the present invention, since the equalizer support shaft is located on the master cylinder side with respect to the connecting portion in the longitudinal direction of the bar handle, the pressing force can be smoothly applied from the pressing portion to the piston rod.

It is a figure showing the whole interlocking brake device composition. It is a principal part enlarged view of FIG. FIG. 3 is a sectional view taken along line 3-3 in FIG. 2. It is a disassembled perspective view of a brake operator and an equalizer mechanism. It is a figure which shows sequentially the operating condition of the equalizer mechanism according to operation of a brake operator.

  The embodiment of the present invention will be described with reference to FIGS. 1 to 5 attached herewith. First, in FIG. 1, a brake handle 12 is turnable on a bar handle 11 provided in a motorcycle which is a bar handle vehicle. The supporting portion 28 to be supported is fixed, and the master cylinder M is attached. A drum brake 13 which is a mechanical brake is provided on the rear wheel so as to be operated by pulling a brake cable 15 which is a connecting means, and a disc brake 14 which is a hydraulic brake is driven by the output hydraulic pressure of the master cylinder M. The operating force of the brake operator 12 is transmitted to the brake cable 15 and the master cylinder M by an equalizer mechanism 18.

  Referring also to FIG. 2, the cylinder body 19 of the master cylinder M is disposed so as to extend along the longitudinal direction of the bar handle 11 in front of the bar handle 11. The bar handle 11 is attached to the bar handle 11 at a position where the switch box 23 is sandwiched between the bar handle 11 and the grip 22 attached to the left end of the bar handle 11. That is, the cylinder body 19 is integrally provided with a bracket 24 that fits the front half circumference of the bar handle 11, and the bracket cap 25 that clamps the bar handle 11 in cooperation with the bracket 24. The cylinder body 19 is attached to the bar handle 11 by being coupled to the bracket 24 by a pair of upper and lower bolts 26.

  A piston 20 is slidably fitted to the cylinder body 19, and a piston rod 21 coaxially connected to the piston 20 is directed from one end wall of the cylinder body 19 toward the front side of the switch box 23. An output port 27 for outputting hydraulic pressure is provided on the other end wall of the cylinder body 19 so as to protrude.

  Referring also to FIG. 3, the brake operation element 12 is rotatably supported by the support portion 28 via an operation element support shaft 29, and the support portion 28 is provided in the cylinder body 19. The cylinder body 19 is integrally provided so as to branch from the one end wall to the front of the switch box 23. Moreover, the operating element support shaft 29 is disposed on the axial line L of the piston rod 21.

  The equalizer mechanism 18 includes an equalizer arm 31 that is rotatably supported by the brake operator 12 via an equalizer support shaft 30, and a delay spring 32 provided between the brake operator 12 and the equalizer arm 31. Have.

  Referring also to FIG. 4, the brake operation element 12 has a base end portion rotatably supported by the support section 28 via the operation element support shaft 29 and extends toward the front of the grip 22. The lever portion 12a and the bracket portion 12b branched from the base end portion of the lever portion 12a and extending to the front side of the support portion 28 are integrally formed.

  The equalizer arm 31 is rotatably supported by the bracket portion 12b of the brake operator 12 via the equalizer support shaft 30, and a connecting portion to which one end portion of the brake cable 15 is connected. 31 b and a pressing portion 31 c that presses the piston rod 21 of the master cylinder M are provided integrally with the equalizer arm 31.

  The equalizer arm 31 includes a supported portion 31a that is rotatably supported by the bracket portion 12b of the brake operator 12 via the equalizer support shaft 30, and the connecting portion 31b and the pressing portion 31c. The recesses 33 and 34 for receiving the end of the delay spring 32 are formed on the base end of the lever portion 12a and the supported portion 31a of the brake operator 12 on the mutually opposing surfaces. Are formed respectively.

  The connecting portion 31b is formed to have an engaging hole 35 and a slit 36 communicating with the engaging hole 35, and the equalizer support shaft is located farther from the bar handle 11 than the connecting portion 31b. 30 is arranged.

  The pressing portion 31c is formed so as to extend from the connecting portion 31b to the bar handle 11 side while being disposed between the operating element support shaft 29 and the piston rod 21.

  The brake cable 15 is configured such that an inner cable 17 is movably inserted into an outer cable 16, and one end of the outer cable 16 is provided integrally with the cylinder body 19 of the master cylinder M. It is held by a cable holder 37 protruding forward from the cylinder body 19. Further, an engagement piece 38 provided at one end portion of the inner cable 17 extending from one end portion of the outer cable 16 is engaged with the engagement hole 35, so that one end portion of the brake cable 15 is connected to the equalizer. The arm 31 is connected to the connecting portion 31b.

  Referring to FIG. 1, the drum brake 13 includes a cable holder 41 provided on the back plate 40, and an operation lever 42 that protrudes outward from the back plate 40 so as to face the cable holder 41. Have The other end of the outer cable 16 is held by the cable holder 41, and the other end of the inner cable 17 extending from the other end of the outer cable 16 is connected to the operating lever 42.

  The drum brake 13 operates as a brake when the brake cable 15 is pulled and the operation lever 42 is rotated, and the operation lever 42 is interposed between the cable holder 41 and the operation lever 42. A return spring 43 that biases toward the non-operating position is provided.

  Further, one end portion of a hydraulic pressure line 44 communicating with the output port 27 is connected to the cylinder body 19 in the master cylinder M, and the other end portion of the hydraulic pressure line is connected to a caliper 45 of the disc brake 14. The

  In such an interlocking brake device, when the brake operator 12 is not operated, the pressing portion 31c of the equalizer arm 31 is moved by the spring force of the delay spring 32, as shown by a chain line in FIG. The supported portion 31 a of the equalizer arm 31 is in contact with the cable holder 37 of the cylinder body 19 due to the initial tension of the brake cable 15. When the brake operator 12 is operated in this state, in the initial state, the equalizer arm 31 is positioned relative to the brake operator 12 by the spring force of the delay spring 32 as shown by the solid line in FIG. The drum brake 13 is actuated when the brake cable 15 is pulled and the rear wheel braking force is generated.

  When the brake operator 12 is further operated, the tension of the brake cable 15 acting on the equalizer arm 31 increases, and the delay spring 32 is compressed in accordance with the increase of the rear wheel braking force, as shown in FIG. As described above, the pressing portion 31c of the equalizer arm 31 moves away from the base end portion of the lever portion 12a in the brake operator 12, and presses the piston rod 21 of the master cylinder M, thereby the master cylinder M The disc brake 14 is actuated by the hydraulic pressure generated at, and a front wheel braking force is generated.

  When the operation force input to the brake operation element 12 is further increased, as shown in FIG. 5C, the equalizer arm 31 has a tension applied to the brake cable 15 and a force pressing the piston rod 21. The rear wheel braking force and the front wheel braking force are further increased by rotating while maintaining the balance.

  Next, the operation of this embodiment will be described. The equalizer mechanism 18 includes an equalizer arm 31 that is rotatably supported by the brake operator 12 via an equalizer support shaft 30, and the equalizer arm 31 includes a drum. Since the connecting portion 31b to which the brake cable 15 connected to the brake 13 is connected and the pressing portion 31c that presses the piston rod 21 provided in the master cylinder M that can apply hydraulic pressure to the disc brake 14 are provided integrally, the brake operation The operation direction of the child 12 is fixed, and an excellent feeling of operation can be obtained by operating the brake operator 12, and the equalizer mechanism 18 can be simply configured and made compact.

  Further, since the equalizer support shaft 30 is disposed at a position farther from the bar handle 11 than the connecting portion 31b, the brake cable 15 and the master cylinder M can be disposed close to the bar handle 11.

  The cylinder body 19 of the master cylinder M is integrally provided with a support portion 28 that rotatably supports the brake operator 12 via an operator support shaft 29, and the brake operator 12 is connected to the piston rod 21. Since it is rotatably supported by the support portion 28 via the operation element support shaft 29 disposed on the axis extension line L, interference with other components disposed in the vicinity of the bar handle 11 is avoided. However, the brake operator 12 and the equalizer mechanism 18 can be compactly arranged around the master cylinder M.

  Further, the pressing portion 31c is provided on the equalizer arm 31 so as to extend from the connecting portion 31b to the bar handle 11 side while being disposed between the operating element support shaft 29 and the piston rod 21. The brake operation element 12 and the equalizer mechanism 18 can be arranged in a compact manner closer to the master cylinder M.

  Furthermore, since the equalizer support shaft 30 is disposed on the master cylinder M side with respect to the connecting portion 31b in the longitudinal direction of the bar handle 11, a pressing force can be smoothly applied to the piston rod 21 from the pressing portion 31c. .

  Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various design changes can be made without departing from the present invention described in the claims. Is possible.

DESCRIPTION OF SYMBOLS 11 ... Bar handle 12 ... Brake operator 13 ... Drum brake 14 which is a mechanical brake ... Disc brake 15 which is a hydraulic brake 15 ... Brake cable 18 which is a connecting means ... Equalizer Mechanism 19 ... Cylinder body 28 ... Support portion 29 ... Operator support shaft 30 ... Equalizer support shaft 31 ... Equalizer arm 31b ... Connecting portion 31c ... Pressing portion L ... Axis extension line M ... Master cylinder

Claims (5)

  The brake operating element (12) is rotatably supported by the support part (28) fixed to the bar handle (11) via the operating element support shaft (29), and is operated by pulling the connecting means (15). A mechanical brake (13), a master cylinder (M) attached to the bar handle (11), a hydraulic brake (14) that operates with the output hydraulic pressure of the master cylinder (M), and the brake operator ( 12) A bar handle vehicle interlocking brake device comprising an equalizer mechanism (18) capable of transmitting the operating force of 12) to both the linking means (15) and the master cylinder (M), wherein the equalizer mechanism (18) includes: The brake operator (12) has an equalizer arm (31) rotatably supported via an equalizer support shaft (30), and the equalizer arm (31) The connecting portion (31b) to which the connecting means (15) is connected and the pressing portion (31c) for pressing the piston rod (21) included in the master cylinder (M) are integrally provided. Interlocking brake device for bar handle vehicles.   The interlock brake device for a bar handle vehicle according to claim 1, wherein the equalizer support shaft (30) is disposed at a position farther from the bar handle (11) than the connecting portion (31b).   The support portion (28) is integrally provided on the cylinder body (19) of the master cylinder (M), and the brake operator (12) is disposed on the axial extension line (L) of the piston rod (21). The interlocking brake device for a bar handle vehicle according to claim 1 or 2, wherein the interlocking brake device is supported by the support portion (28) through the operating element support shaft (29).   The pressing portion (31c) is arranged between the operating element support shaft (29) and the piston rod (21), and extends from the connecting portion (31b) to the bar handle (11) side. The interlock brake device for a bar handle vehicle according to claim 3, wherein the interlock brake device is provided on the equalizer arm (31).   The bar according to claim 4, wherein the equalizer support shaft (30) is arranged on the master cylinder (M) side of the connecting portion (31b) in the longitudinal direction of the bar handle (11). Interlocking brake device for steering vehicles.

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