JP2005078412A - Operating lever for bar handle vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an operating lever for a bar handle vehicle where a brake and a clutch are made to operate with the rotation of an oscillator by grip-operating a lever main body even when a general user forgets to mount the adjusting bolt, the lock nut or the adjust pin of a grip margin adjusting mechanism after replacing a lever main body or the rocking body. <P>SOLUTION: An abutting part 13f which abuts onto an inner wall surface 12e of the recessed part 12d of the lever main body 12 in the state of securing the minimum grip margin required for gripping operation of the lever main body 12 when the adjusting bolt 16 of the grip margin adjusting mechanism 5 is removed is provided on the outer peripheral wall 13e of a lever connection arm 13d formed at the rocking body 13. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to an operation lever for operating a brake and a clutch of a bar handle vehicle such as a motorcycle, an automatic tricycle equipped with a steering handlebar at the front of the vehicle body, and a three- or four-wheel buggy vehicle. The operation lever attached to the handlebar is a two-piece type consisting of a lever body and a swinging body, and is provided with a grip allowance adjusting mechanism between the lever body and the swinging body. The present invention relates to an operation lever for a bar handle vehicle that can change a gripping margin between the grip and the operation lever.

  Some bar handle vehicle operating levers that operate brakes and clutches of motorcycles and the like include a grip allowance adjusting mechanism. This operating lever is divided into a lever body attached to the handlebar and a lever body arranged in front of the handlebar grip and an oscillating body, and the oscillating body is attached to the lever holder with an oscillating shaft. The lever body is pivotally supported on the rocking body using the lever shaft, and the lever body is gripped and operated so that the lever body and the rocking body can be rotated integrally around the rocking shaft. ing. There is a grip allowance adjusting mechanism between the lever body and the swinging body, and by adjusting this grip allowance adjusting mechanism, the grip allowance between the handlebar grip and the lever body of the control lever is adjusted. It can be changed according to the user's preference (for example, see Patent Document 1).

  For example, in the operation lever 22 including the lever body 20 and the rocking body 21 as shown in FIG. 4, the rocking body 21 projects the working arm 21b, the stopper arm 21c, and the lever connecting arm 21d from the rotation base 21a. The pivot base 21a is inserted into a pair of upper and lower lever holders 23a formed on the cylinder body 23, the working arm 21b is brought into contact with the rear end of the piston 24, and the stopper arm 21c is placed in front of the cylinder body 23 in the vehicle body. The operating lever 22 is pivotally attached to the cylinder body 23 by projecting to the side of the cylinder and pivotally supporting the pivot base 21a on the lever holder 23a by the swing shaft 25.

  The lever connecting arm 21d of the rocking body 21 is inserted into a recess 20b formed on the inner surface of a bifurcated rotating base 20a provided on the base end side of the lever body 20, and the bifurcated rotating base 20a and the lever connecting arm 21d. Is pivotally supported by the lever shaft 26, so that the lever body 20 is rotatably attached to the rocking body 21. The grip allowance adjusting mechanism 27 includes an adjustment bolt 28 screwed into a female screw hole 20d formed in a boss portion 20c protruding to the handlebar side of the lever body 20, and a lock nut 29 that locks the screwed state of the adjustment bolt 28. It is configured. A lever return spring 30 is contracted on the vehicle body front side of the bifurcated rotation base 20a of the lever main body 20 and the lever connecting arm 21d of the swinging body 21, and the elastic force of the lever return spring 30 is used. Since the head of the adjustment bolt 28 is always in contact with the anti-piston side wall of the operating arm 21b of the swinging body 21, when the lever body 20 is gripped, the lever body 20 and the swinging body 21 are integrated to swing. While rotating around the moving shaft 25 and changing the protruding length of the adjusting bolt 28, the grip margin between the grip and the lever body 20 can be changed.

In addition, there is a grip allowance adjustment mechanism that uses an adjustment pin. This type of grip allowance adjustment mechanism includes a pin mounting hole formed in the lever body, and an adjustment pin that is rotatably mounted in the pin mounting hole. And a cam contact surface of the oscillating body. The adjustment pin has cam surfaces with different distances from the central axis on the outer periphery of the shaft part, and the cam contact surface of the rocking body is a lever return spring provided on the lever body and the vehicle body front side of the rocking body The gripping force between the grip and the lever main body is changed by abutting against any one of the cam surfaces of the adjustment pin by the elastic force from (see, for example, Patent Document 2).
Japanese Patent Laid-Open No. 11-235992 Japanese Utility Model Publication No. 7-17667

  However, in the above-described case, for example, when a general user removes the lever shaft 26 or the swing shaft 25 and replaces the lever main body 20 or the swing body 21, and installs a new lever main body or the swing body, the grip allowance adjustment is performed. If the mechanism adjustment bolt 28 or the lock nut 29 is forgotten to be mounted, the lever body 20 only rotates around the lever shaft 26 even if the lever body 20 is gripped as shown in FIG. Thus, since the oscillating body 21 is not pushed in the piston direction, the piston 24 cannot be pushed and the brake cannot be operated.

  Even in the following, if the adjustment pin is forgotten to be mounted after the lever main body or the swinging body is replaced, the brake and the clutch cannot be operated in the same manner as described above.

  Therefore, according to the present invention, even if a general user replaces the lever main body and the swinging body, even if he / she forgets to attach the adjustment bolt, lock nut, or adjustment pin of the grip allowance adjusting mechanism, the user can grasp the lever main body to operate. An object of the present invention is to provide a bar handle vehicle operating lever that can rotate a rocking body via a lever body and actuate a brake or a clutch.

  In order to achieve the above object, the present invention provides an operation lever pivotally supported by a lever holder attached to a handle bar, a lever main body disposed in front of a handle bar grip, an oscillating body, The swinging body is pivotally supported on the lever holder using a swing shaft, and the lever connecting arm of the swinging body is inserted into a recess formed in a bifurcated rotation base on the base end side of the lever body, A grip allowance adjustment mechanism is provided for adjusting the grip allowance between the lever main body and the grip between the lever main body and the rocking body by pivotally supporting the pivot base and the lever connecting arm with a lever shaft. In the bar handle vehicle operating lever in which the lever body and the swinging body are integrally rotated around the swinging shaft by a gripping operation of the lever body, an outer peripheral wall of the lever connecting arm and the lever connecting of the recess With the inner wall surrounding the outer wall of the arm And a contact portion that abuts with each other when the grip allowance adjusting mechanism is removed and rotates the swinging body about the swing axis by a grip operation of the lever body. May be a protrusion formed on either the outer peripheral wall of the lever connecting arm or the inner wall surface of the recess.

  In addition, the grip allowance adjusting mechanism includes an adjustment bolt for screwing a shaft portion into a female screw hole formed on one of the lever main body and the swinging body on the handlebar side and bringing the head into contact with the other handlebar side. A lock nut for locking the screwed state of the adjusting bolt, and adjusting the gripping length between the grip and the lever main body by changing the protruding length of the adjusting bolt, or freely rotating to the lever main body And an adjusting pin provided on the outer periphery with cam surfaces each having a different distance from the central axis, and a cam contact surface formed on the rocking body. The grip margin between the grip and the lever main body may be adjusted by abutting on one of them.

  The outer wall of the lever connecting arm of the rocking body and the inner wall surface surrounding the outer periphery of the lever connecting arm on the inner surface of the pivot base of the lever body abut each other when the grip allowance is reduced most by the operation of the grip allowance adjusting mechanism. By providing a contact part that rotates the rocking body around the rocking axis by gripping the lever body, the adjustment bolt or lock nut of the grip allowance adjustment mechanism should be used when a general user replaces the lever. Alternatively, even if the adjustment pin or the like is forgotten to be mounted, if the lever body is rotated by a gripping operation, the swinging body is rotated via the contact portion, whereby the brake or the clutch can be operated.

  Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings. 1 to 3 show an embodiment in which the present invention is applied to an operation lever of a hydraulic brake actuator, and the brake actuator 1 includes a hydraulic master cylinder 2 that is a hydraulic pressure generation source, and the hydraulic cylinder. An operating lever 4 serving as an operating means for generating hydraulic pressure in the bottom hydraulic chamber of the cylinder body 3 of the pressure master cylinder 2 and a grip allowance adjusting mechanism 5 for adjusting the grip allowance of the operation lever 4 are provided. ing. The hydraulic master cylinder 2 holds the handle bar 6 between the vehicle body mounting arm 3a and the bracket 7 of the cylinder body 3, and bolts the vehicle body mounting arm 3a and the bracket 7 so that the front of the vehicle body of the handle bar 6 is secured. Arranged on the side.

  In addition to the above-mentioned vehicle body mounting arm 3a, the cylinder body 3 is integrally provided with a reservoir 8 for storing brake fluid at the top, and a pair of upper and lower lever holders 3b are extended on the front side of the vehicle body. The operation lever 4 is pivotally supported so as to be rotatable. Inside the cylinder body 3, a bottomed cylinder hole 9 is provided in the width direction of the vehicle body. A piston 10 protrudes from the opening of the cylinder hole into the cylinder hole 9, and is liquid-tight. And it is movably inserted.

  The operation lever 4 is divided into two pieces, that is, a lever main body 12 disposed on the vehicle body front side of the grip 11 and an oscillating body 13 that pushes the piston 10 in the cylinder body 3 into the cylinder hole 9. . The lever body 12 includes a bifurcated pivot base 12a having a U-shaped cross section on the base end side, and a rod-shaped grip operating section 12b extending slightly curved from the bifurcated pivot base 12a. The grip allowance adjusting mechanism 5 is attached to a boss portion 12c that protrudes toward the proximal handlebar 12b. Further, the bifurcated rotation base 12a of the lever body 12 is formed with a recess 12d for inserting the lever connecting arm 13d of the swinging body 13 on the inner surface facing the inner surface 12e of the recess 12d. It is formed so as to surround the outer peripheral wall 13e.

  The oscillating body 13 is formed in a shape in which the working arm 13b, the stopper arm 13c, and the lever connecting arm 13d are projected in three directions from the rotating base 13a, and the rotating base 13a is inserted between the lever holder 3b. The working arm 13b is brought into contact with the rear end of the piston 10, the stopper arm 13c is protruded toward the front side of the body of the cylinder body 3, and the pivot base 13a is pivotally supported on the lever holder 3b by the swing shaft 14. Thus, the oscillating body 13 is rotatably attached to the cylinder body 3. A resilient force that urges the piston 10 in the backward limit direction from the bottom of the cylinder hole acts on the acting arm 13b that contacts the piston 10, and the rocking body 13 is counterclockwise in FIG. 1 with the rocking shaft 14 as a fulcrum. , And the backward limit at the time of non-operation is regulated by the contact between the stopper arm 13c and the front side wall of the cylinder body 3.

  The lever connecting arm 13d of the oscillating body 13 is disposed so as to protrude from the rotating base 13a to the front side of the vehicle body with respect to the working arm 13b. The lever main body 12 is pivotally attached to the rocking body 13 by pivotally supporting the bifurcated rotation base 12a and the lever connecting arm 13d with the lever shaft 15. The distal end side of the outer peripheral wall 13e of the pivot base 13a of the oscillating body 13 is formed in an arc shape, and the recess 12d of the lever body 12 is rotated along the distal end of the outer peripheral wall 13e so that the grip 11 and the grip operating portion 12b It is formed so that the grip allowance of can be adjusted. The handlebar 6 side of the outer peripheral wall 13e protrudes toward the grip operating portion 12b side of the lever body 12, and a contact portion 13f is formed. When the adjustment bolt 16 of the grip allowance adjusting mechanism 5 is removed, the contact portion 13f ensures the minimum grip allowance necessary for the grip operation of the lever main body 12 and the inner wall surface 12e of the recess 12d of the lever main body 12. It is set to contact in the state.

  The grip allowance adjusting mechanism 5 is configured so that the above-described adjustment bolt 16 screwed into the female screw hole 12f formed in the boss portion 12c of the grip operation portion 12b and the screwed state of the adjustment bolt 16 are brought into contact with the tip surface of the boss portion 12c. The lock nut 17 is held in contact, and the protruding length of the adjustment bolt 16 is changed to move the grip operation portion 12b of the lever body 12 in the longitudinal direction of the vehicle body. A lever return spring 18 is contracted on the vehicle body front side of the bifurcated rotation base 12a of the lever main body 12 and the lever connecting arm 13d of the swinging body 13, and the lever return spring 18 is adjusted by the action of the lever return spring 18. Since the head of the bolt 16 is always in contact with the anti-piston side wall of the working arm 13b of the swinging body 13, when the lever body 12 is gripped and operated, the lever body 12 and the swinging body 13 are integrated to form a swinging shaft. 14, and the grip length between the grip 11 and the lever body 12 can be changed by changing the protruding length of the adjustment bolt 16.

  In the brake operating device 1 formed as described above, when the lever main body 12 of the operating lever 4 is not gripped and operated, the rocking body 13 causes the stopper arm 13c to abut against the vehicle body front side wall of the cylinder body 3, and the lever The main body 12 is in the state shown in FIGS. 1 and 2 in which the head of the adjustment bolt 16 of the grip allowance adjusting mechanism 5 is brought into contact with the anti-piston side wall of the operating arm 13b of the rocking body 13. 1 and 2, a predetermined grip margin is set between the grip 11 and the grip operation portion 12 b of the lever main body 12. When the lever body 12 of the operation lever 4 is gripped from this inoperative state, the adjustment bolt 16 of the grip allowance adjusting mechanism 5 provided on the lever body 12 pushes the working arm 13b of the rocking body 13 in the piston direction. The lever main body 12 and the rocking body 13 are united and pivoted clockwise in FIGS. 1 and 2 with the rocking shaft 14 as a fulcrum. The action arm 13b of the rocking body 13 that contacts the piston 10 pushes the piston 10 toward the bottom of the cylinder hole 9, pressurizes the brake fluid at the bottom of the cylinder hole, and the brake fluid is supplied to the brake device to perform braking. Is called.

  In the brake operating device 1 that operates as described above, for example, a general user removes the lever shaft 15 and the swing shaft 14, replaces the old lever body and the swing body, and assembles the new lever body 12 and the swing body 13. Even when the adjustment bolt 16 or the lock nut 17 of the grip allowance adjusting mechanism 5 is forgotten, the contact portion 13f of the oscillating body 13 is moved to the lever main body 12 by gripping the grip operation portion 12b. The inner wall surface 12e of the concave portion 12d, and the action arm 13b of the oscillating body 13 is pushed in the piston direction, the piston 10 is pushed toward the bottom of the cylinder hole 9, and the brake fluid at the bottom of the cylinder hole is increased. The brake fluid is supplied to the brake device to perform braking. Further, the contact portion 13f is formed in the recess 12d of the lever body 12 when the adjustment bolt 16 of the grip allowance adjusting mechanism 5 is most screwed into the female screw hole 12f formed in the boss portion 12c of the grip operation portion 12b. Since it is set so as to abut against the wall surface 12e, a grip allowance of the lever main body 12, that is, a stroke amount of the piston 10, can be ensured, and a hydraulic pressure can be reliably generated in the hydraulic pressure chamber. In this way, even if the vehicle is run with the adjustment bolt 16 and the lock nut 17 lost, the brake is operated by gripping the grip operating portion 12b of the lever main body 12. Will be able to.

  In the above-described embodiment, the contact portion is formed on the lever connecting arm of the rocking body, but the present invention is not limited to this, and the contact portion may be formed on the outer peripheral wall of the concave portion of the lever body. The contact portion may be a protrusion formed on either the outer peripheral wall of the lever connecting arm or the inner wall surface of the recess. Further, the shaft portion of the adjustment bolt may be screwed into a female screw hole formed on the swinging body side of the grip allowance adjusting mechanism, and the head of the adjustment bolt may be brought into contact with the lever body side.

  The present invention can also be applied to an operation lever for a clutch provided with a grip allowance adjusting mechanism, and the operation wire is pulled by operating the brake or the clutch by rotating the swinging body. It can also be applied to.

  Furthermore, the present invention can be applied to an adjustment pin having a cam surface provided on the lever body and an operation lever having a grip allowance adjusting mechanism having a cam contact surface formed on the rocking body. Even if the adjustment pin is forgotten to be attached at the time of replacement, the brake and clutch can be operated by gripping the lever main body as in the above-described embodiment.

  Further, the abutting portion is formed so as to abut against either the outer peripheral wall of the lever connecting arm or the inner wall surface of the recess when the grip margin is reduced most by the grip margin adjusting mechanism to rotate the swinging body. Then, the grip margin of the operation lever can be set within the range of the grip margin adjustment mechanism.

The top view of the state which attached the operation lever which shows one example of this invention to the handlebar Sectional drawing of the principal part of the operation lever which shows one example of this invention Explanatory drawing of the state which lost the adjustment bolt and lock nut of the operation lever which show one example of the present invention Cross section of the main part of a conventional operating lever Explanatory drawing of the state where the adjustment bolt and lock nut of the conventional operating lever have been lost

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Brake actuator, 2 ... Hydraulic master cylinder, 3 ... Cylinder body, 4 ... Operation lever, 5 ... Grip adjustment mechanism, 6 ... Handlebar, 10 ... Piston, 11 ... Grip, 12 ... Lever main body, 12a ... Bifurcated rotation base, 12b ... grip operation part, 12d ... recess, 12e ... inner wall surface, 12f ... female screw hole, 13 ... oscillator, 13a ... rotation base, 13d ... lever connecting arm, 13e ... outer peripheral wall, 13f ... Contact part, 14 ... Oscillating shaft, 15 ... Lever shaft, 16 ... Adjustment bolt, 17 ... Lock nut

Claims (4)

An operation lever pivotally supported by a lever holder attached to a handle bar is divided into a lever main body disposed in front of the handle bar grip and a rocking body, and the rocking body is divided into the lever holder. The lever connecting arm of the swinging body is inserted into a recess formed in the bifurcated rotating base on the base end side of the lever body, and the bifurcated rotating base and the lever connecting arm are connected to the lever. It is pivotally supported by a shaft, and a grip allowance adjusting mechanism for adjusting a grip allowance between the lever main body and the grip is interposed between the lever main body and the rocking body. In a bar handle vehicle operating lever in which a rocking body is integrally rotated about the rocking shaft, between the outer peripheral wall of the lever connecting arm and the inner wall surface of the recess surrounding the outer peripheral wall of the lever connecting arm. Remove the grip adjustment mechanism When the abut each other, the gripping operation of the lever main body, the bar-handle vehicle operating lever, characterized in that a contact portion for rotating the swinging member to the oscillation axis. The bar handle vehicle operating lever according to claim 1, wherein the contact portion is a protrusion formed on one of an outer peripheral wall of the lever connecting arm and an inner wall surface of the recess. The grip allowance adjustment mechanism includes an adjustment bolt that screws a shaft portion into a female screw hole formed on one of the lever main body and the swinging body on the handlebar side, and abuts the head on the other handlebar side, 3. A lock nut for locking a screwed state of the adjustment bolt, and adjusting a grip margin between the grip and the lever main body by changing a protruding length of the adjustment bolt. Bar handle vehicle control lever. The grip allowance adjusting mechanism includes an adjustment pin that is rotatably mounted on the lever main body and has cam surfaces that are different in distance from the center axis on the outer periphery, and a cam contact surface that is formed on the rocking body. The bar handle vehicle according to claim 1, wherein a grip margin between the grip and the lever body is adjusted by bringing the cam contact surface into contact with any one of the cam surfaces. Operation lever.

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