JP2019189145A - Fluid pressure master cylinder device for bar handle vehicle - Google Patents

Abstract

To provide a fluid pressure master cylinder device for a bar handle vehicle which can constantly favorably operate a switch such as a brake lamp switch and a clutch switch.SOLUTION: An operation lever 6 is arranged at lever brackets 4e, 4e which are formed at a cylinder body 4a of a fluid pressure master cylinder 4 so as to be turnable. The operation lever 6 comprises a turn regulation piece 6d which protrudes from a turning base part 6a attached to the lever brackets 4e, 4e to a vehicle body side, and regulates a turning amount of the operation lever 6 by abutting on the cylinder body 4a. A brake lamp switch 9 which operates when turning the operation lever 6 up to a preset angle is attached to the turn regulation piece 6d, and step parts 4i, 4j and 4k for operating the brake lamp switch 9 are formed at the cylinder body 4a.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a hydraulic pressure for a bar handle vehicle, comprising: a hydraulic master cylinder that supplies hydraulic fluid to a brake or clutch of the bar handle vehicle; and an operation lever that is rotatably provided to a cylinder body of the hydraulic master cylinder. More specifically, the present invention relates to a hydraulic master cylinder device for a bar handle vehicle that includes a switch such as a brake lamp switch or a clutch switch that is operated when an operation lever is rotated to a preset angle.

  Conventionally, in a hydraulic master cylinder device for a bar handle vehicle, a brake lamp switch is provided in the cylinder body of the hydraulic master cylinder, and a switch operating portion for operating the brake lamp switch is provided in the operation lever, and the operation lever is set in advance. There was one in which the switch actuating part actuated the brake lamp switch when rotated to an angle. In addition, the brake lamp switch is turned off when the switch operating portion pushes the brake lamp switch actuator into the casing, and the operating lever is rotated to a preset angle to separate the actuator from the switch operating portion. The actuator is formed so as to be turned on in a state of protruding from the casing (see, for example, Patent Document 1).

JP 2004-210037 A

  However, in the above-mentioned Patent Document 1, when an operation lever having a lever ratio changing mechanism capable of changing the lever ratio is applied, an operation lever for a brake lamp switch provided in the cylinder body according to the change of the lever ratio. Since the position of the switch actuating portion changes, there is a risk of hindering the operation of the brake lamp switch.

  Accordingly, an object of the present invention is to provide a hydraulic master cylinder device for a bar handle vehicle that can always operate switches such as a brake lamp switch and a clutch switch satisfactorily.

  In order to achieve the above object, the hydraulic master cylinder device for a bar handle vehicle according to the present invention can be rotated by a hydraulic master cylinder attached to the handle bar and a lever bracket formed on the cylinder body of the hydraulic master cylinder. An operation lever provided on the lever bracket, the operation lever projecting from a rotation base portion rotatably attached to the lever bracket toward the hydraulic master cylinder side, and is brought into contact with the cylinder body to rotate the operation lever. In the hydraulic master cylinder device having a rotation restricting piece for restricting the amount of movement, a switch that operates when the operation lever is turned to a preset angle is attached to the turn restricting piece, and the cylinder body Further, a switch operating part for operating the switch is provided.

  The operating lever is connected to a connecting member connected to the lever bracket via a first pivot via a second pivot, and is one of a plurality of lever ratio changing holes formed in the connecting member. It is preferable that the lever ratio can be changed by inserting a lever ratio changing pin through the pin hole formed in the lever bracket.

  According to the hydraulic master cylinder device for a bar handle vehicle of the present invention, a switch that operates when the operating lever is rotated to a preset angle is attached to the rotation restricting piece of the operating lever, and the hydraulic master cylinder By providing the cylinder body with a switch operating portion for operating the switch, the switch can be operated reliably.

  Furthermore, even in the case of a bar handle vehicle hydraulic master cylinder device having an operation lever having a structure capable of changing the lever ratio, the switch can be operated reliably.

It is principal part sectional drawing of the hydraulic master cylinder apparatus for vehicles which shows one example of this invention. It is a principal part rear view of a hydraulic master cylinder device for vehicles similarly. It is a front view of the hydraulic master cylinder device for vehicles similarly. FIG. 4 is a sectional view taken along line IV-IV in FIG. 3. It is a perspective view of the connecting member which shows one example of the present invention. It is a principal part rear view of the hydraulic master cylinder device for vehicles at the time of enlarging a lever ratio. It is a principal part rear view of the hydraulic master cylinder device for vehicles at the time of making a lever ratio small.

  1 to 7 are views showing an embodiment of a hydraulic master cylinder device for a bar handle vehicle according to the present invention. The hydraulic master cylinder device 1 includes a hydraulic master cylinder 4 attached in the vicinity of an accelerator grip 3 of a handlebar 2 that steers a front wheel (not shown) at the front of a vehicle body, and a connecting member 5 connected to the hydraulic master cylinder 4. An operation lever 6 to be attached and a push rod 8 interposed between the operation lever 6 and the piston 7 of the hydraulic master cylinder 4 are provided. The operation lever 6 is moved to a preset angle. A brake lamp switch 9 (the switch of the present invention) is mounted to turn on a brake lamp (not shown) when rotated.

  The hydraulic master cylinder 4 is a well-known vertical type, and the vertically long cylinder body 4a of the hydraulic master cylinder 4 includes a bottomed cylinder hole 4b that opens to the front side of the vehicle body, and is formed on the bottom side of the cylinder hole 4b. The bracket half 4c formed integrally with the cylinder body 4a and the separate half bracket 10 hold the handlebar 2 near the accelerator grip 3, and the bracket half 4c and the half bracket 10 are separated. By fastening with the bolt 11, the handlebar 2 is attached to the front side of the vehicle body.

  A piston 7 is inserted into the cylinder hole 4b with the cup seals 12 and 12 being fitted, and a hydraulic chamber 13 is defined between the piston 7 and the bottom of the cylinder hole 4b. A return spring 14 is contracted between the bottom of the cylinder hole 4 b and the piston 7, and the piston 7 is constantly urged in the opening direction of the cylinder hole 4 b by the elastic force of the return spring 14, The retreat limit is regulated by the contact of. Further, a reservoir mounting portion 4d having a relief port 15 and a supply port 16 protrudes from the upper portion of the cylinder body 4a, and a reservoir (not shown) is assembled to the reservoir mounting portion 4d.

  A pair of upper and lower lever brackets 4e, 4e protrudes from the front end of the cylinder body 4a at a predetermined interval. Each lever bracket 4e has an insertion hole 4f through which the first pivot 17 is inserted on the vehicle body side. Pin holes 4g through which the lever ratio changing pin 18 is inserted are formed on the front side. Between the lever brackets 4e, 4e, a connecting member 5 is rotatably connected via a first pivot 17, and an operation lever 6 is rotatably connected to the connecting member 5 via a second pivot 19. . Further, a rotation restricting portion 4h for restricting the rotation of the operation lever 6 to the non-grip side protrudes from the inside of the cylinder body 4a, and the rotation restricting portion 4h corresponds to a change in lever ratio. Thus, three step portions 4i, 4j, and 4k (switch operation portions of the present invention) are formed in the cylinder axial direction so that the rotation of the operation lever 6 can be restricted.

  The connecting member 5 is formed in a bifurcated shape sandwiching the upper surface and the lower surface of the operation lever 6, an upper connection plate 5 a that contacts the upper surface of the operation lever 6, a lower connection plate 5 b that contacts the lower surface of the operation lever 6, A connecting portion 5c that connects the connecting plate 5a and the vehicle body side of the lower connecting plate 5b is provided, and a first pivot is inserted through the connecting portion 5c, the upper connecting plate 5a, and the lower connecting plate 5b. A hole 5d is formed. Further, the upper connecting plate 5a and the lower connecting plate 5b are formed with a second pivot mounting hole 5e for mounting the second pivot 19, and the second pivot mounting hole 5e is inserted through the upper connecting plate 5a. 5f and the internal thread part 5g formed in the lower connection board 5b are provided.

  Further, three levers for selectively inserting lever ratio changing pins 18 and 18 are provided at intermediate positions between the first pivot insertion hole 5d and the second pivot mounting hole 5e of the upper coupling plate 5a and the lower coupling plate 5b. Ratio change holes 5h, 5i, 5j are arranged in parallel in the vehicle body width direction. These lever ratio changing holes 5h, 5i, 5j are formed on an arc centered on the central axis of the first pivot insertion hole 5d, and are formed to face the upper connecting plate 5a and the lower connecting plate 5b. Each lever ratio changing hole 5h, 5i, 5j is formed coaxially.

  The operating lever 6 pushes the push rod 8, a turning base 6 a inserted between the upper connecting plate 5 a and the lower connecting plate 5 b, a grip operating unit 6 b disposed along the front of the accelerator grip 3. And a rotation restricting piece 6d for restricting the rotation of the operation lever 6 toward the non-grip side by contact with the rotation restricting portion 4h. A collar insertion hole 6e through which a collar 20 that passes through the inside of the second pivot 19 is inserted is formed in the rotation base 6a. The brake lamp switch 9 is attached to the rotation restricting piece 6d.

  The brake lamp switch 9 is provided so that the actuator 9b can protrude and retract from the casing 9a. The brake lamp switch 9 is turned off when the actuator 9b is pushed into the casing by contacting the rotation restricting portion 4h, and the operation lever 6 is set in advance. By rotating the actuator 9b to an angle, the actuator 9b is separated from the rotation restricting portion 4h, and the actuator 9b is turned on in a state of protruding from the casing 9a. In the push rod 8, a spherical convex portion 8 a formed at one end is accommodated in a spherical concave portion 7 a formed on the cylinder hole opening side end surface of the piston 7, and the other end is operated by the operation lever 6 via the piece member 21. It is connected to the part 6c.

  The operating lever 6 is inserted into the collar insertion hole 6e with the collar 20 inserted between the upper connecting plate 5a and the lower connecting plate 5b of the connecting member 5, and the inserting portion 5f, the collar 20 and the female screw. The second pivot 19 is inserted through the portion 5g, and the male screw portion 19a of the second pivot 19 is screwed into the female screw portion 5g, so that the connecting member 5 is rotatably connected. Next, the connecting member 5 in a state in which the operation lever 6 is rotatably connected is inserted between the lever brackets 4e and 4e, and the first pivot 17 is formed across the insertion holes 4f and 4f and the first pivot insertion hole 5d. Is inserted into the male screw portion 17a of the first pivot 17 projecting from the lower lever bracket 4e, thereby connecting the operating lever 6 to the lever bracket 4e, 4e is rotatably connected. Further, the lever ratio changing pin 18 is inserted through the pin hole 4g formed in the upper lever bracket 4e and the lever ratio changing hole 5i at the center of the vehicle body width direction formed in the upper connecting plate 5a. The lever ratio change pin 18 is inserted through a pin hole 4g formed in the lever bracket 4e and a lever ratio change hole 5i formed in the lower connecting plate 5b at the center in the vehicle width direction.

  As shown in FIGS. 1 to 3, the operating lever 6 attached in this way is brought into contact with the rotation restricting piece 6d and the cylinder body side surface 4m of the central step portion 4j of the rotation restricting portion 4h. The rotation to the non-grip side is restricted and the initial position is determined. Accordingly, the distance P1 of the second pivot 19 from the center P1 of the second pivot 19 serving as the pivot point of the operation lever 6 to the grip portion P2 where the driver serving as the power point grips the grip operating unit 6b is similarly determined. The ratio of the distance T2 from the center P1 to the contact point P3 of the push rod 8 and the piston 7 that is the point of action to the piston 7, that is, the initial lever ratio is set.

  Further, when not in operation, the actuator 9b of the brake lamp switch 9 is in contact with the cylinder hole bottom side surface 4n of the center step 4j and is pushed into the casing, and the brake lamp is turned off. ing. When the driver rotates the operation lever 6 to a preset angle during brake operation, the contacted actuator 9b and the cylinder hole bottom side surface 4n are separated from each other, and the actuator 9b protrudes from the casing 9a. The brake lamp lights up.

  Further, when it is desired to generate a hydraulic pressure in the hydraulic pressure chamber 13 with a small amount of rotation of the operating lever 6 to perform a braking action, as shown in FIG. 6, a pin hole 4g formed in the upper lever bracket 4e and The lever ratio changing pin 18 is replaced with the lever ratio changing hole 5h on the anti-push rod side formed in the upper connecting plate 5a, the pin hole 4g formed in the lower lever bracket 4e, and the lower connecting plate 5b. The lever ratio changing pin 18 is replaced with the lever ratio changing hole 5h formed on the side opposite to the push rod. The operation lever 6 is prevented from rotating to the anti-grip side by contacting the rotation restricting piece 6d and the cylinder body side surface 4p of the stepped portion 4k on the cylinder body side of the rotation restricting portion 4h. The lever ratio is set to be large by reducing the distance T3 from the center P1 of the second pivot 19 to the contact point P3 between the push rod 8 and the piston 7.

  Further, when not in operation, the actuator 9b of the brake lamp switch 9 is in an OFF state in which it is brought into contact with the cylinder hole bottom side surface 4q of the step 4k on the cylinder body side and pushed into the casing. Off. When the driver rotates the operation lever 6 to a preset angle during the brake operation, the contacted actuator 9b and the cylinder hole bottom side surface 4q are separated from each other, and the actuator 9b protrudes from the casing 9a. The brake lamp lights up.

  In the case where it is desired to generate a hydraulic pressure in the hydraulic pressure chamber 13 with a large rotation amount of the operation lever to perform a braking action, as shown in FIG. 7, a pin hole 4g formed in the upper lever bracket 4e, The lever ratio changing pin 18 is replaced with the lever ratio changing hole 5j on the push rod side formed in the upper connecting plate 5a, and the pin hole 4g formed in the lower lever bracket 4e and the lower connecting plate 5b are formed. The lever ratio changing pin 18 is replaced with the lever ratio changing hole 5j on the push rod side. The operation lever 6 is prevented from rotating to the anti-grip side by contacting the rotation restricting piece 6d with the cylinder body side surface 4r of the stepped portion 4i on the counter cylinder body side of the rotation restricting portion 4h. And the distance T4 from the center P1 of the second pivot 19 to the contact point P3 between the push rod 8 and the piston 7 is lengthened to set the lever ratio small.

  Further, when not in operation, the actuator 9b of the brake lamp switch 9 contacts the cylinder hole bottom side surface 4s of the step part 4i on the side opposite to the cylinder body and is in the OFF state pushed into the casing. Is off. When the driver rotates the operation lever 6 to a preset angle during brake operation, the contacted actuator 9b and the cylinder hole bottom side surface 4s are separated from each other, and the actuator 9b protrudes from the casing 9a. The brake lamp lights up.

  In the present embodiment, as described above, the lever ratio can be easily changed by replacing the lever ratio changing pin 18 with any one of the lever ratio changing holes 5h, 5i, 5j, and the driver can perform a desired operation. A feeling can be obtained, and even if the lever ratio is changed, the brake lamp switch 9 can be operated reliably. Further, when changing the lever ratio, the operation lever 6 and the hydraulic master cylinder 4 can be maintained in the state of being connected via the connecting member 5, so that the workability can be improved.

  The present invention is not limited to the above-described embodiment, and the structure for changing the lever ratio is arbitrary, and can also be applied to a hydraulic master cylinder device of a type in which the lever ratio cannot be changed. Further, the switch of the present invention is not limited to the brake lamp switch but can be applied to a clutch switch. Further, the operation lever can be applied to a split type divided into a lever main body and a knocker. The present invention can also be applied to a hydraulic master cylinder device having a horizontal hydraulic master cylinder, and the internal structure of the hydraulic master cylinder is arbitrary.

  DESCRIPTION OF SYMBOLS 1 ... Hydraulic master cylinder apparatus, 2 ... Handle bar, 3 ... Accelerator grip, 4 ... Hydraulic master cylinder, 4a ... Cylinder body, 4b ... Cylinder hole, 4c ... Half bracket, 4d ... Reservoir mounting part, 4e ... Lever Bracket, 4f ... insertion hole, 4g ... pin hole, 4h ... rotation restricting portion, 4i, 4j, 4k ... stepped portion, 4m, 4p, 4r ... cylinder body side surface, 4n, 4q, 4s ... cylinder hole bottom side surface, 5 ... connecting member, 5a ... upper connecting plate, 5b ... lower connecting plate, 5c ... connecting part, 5d ... first pivot insertion hole, 5e ... second pivot mounting hole, 5f ... insertion part, 5g ... female screw part, 5h, 5i , 5j ... Lever ratio changing hole, 6 ... Operating lever, 6a ... Rotating base, 6b ... Grip operating part, 6c ... Operating part, 6d ... Rotation restricting piece, 6e ... Color insertion hole, 7 ... Piston, 7a ... Spherical Recess, 8 ... Rod, 8a ... spherical convex part, 9 ... brake lamp switch, 9a ... casing, 9b ... actor, 10 ... half bracket, 11 ... bolt, 12 ... cup seal, 13 ... hydraulic chamber, 14 ... return spring, DESCRIPTION OF SYMBOLS 15 ... Relief port, 16 ... Supply port, 17 ... 1st pivot, 17a ... Male thread part, 18 ... Lever ratio change pin, 19 ... 2nd pivot, 19a ... Male thread part, 20 ... Collar, 21 ... Piece member, 22 ... Nut member

Claims (2)

A hydraulic master cylinder attached to the handlebar, and an operation lever rotatably provided on a lever bracket formed on a cylinder body of the hydraulic master cylinder, the operation lever being rotatable on the lever bracket In the hydraulic master cylinder device provided with a rotation restricting piece that protrudes from the rotation base attached to the hydraulic master cylinder side and restricts the rotation amount of the operation lever by contact with the cylinder body,
A switch that operates when the operation lever is rotated to a preset angle is attached to the rotation restricting piece, and a switch operating portion that operates the switch is provided on the cylinder body. Hydraulic master cylinder device for bar handle vehicles. The operating lever is connected to a connecting member connected to the lever bracket via a first pivot via a second pivot, and one of a plurality of lever ratio changing holes formed in the connecting member; 2. The hydraulic master cylinder device for a bar handle vehicle according to claim 1, wherein the lever ratio can be changed by inserting a lever ratio changing pin through a pin hole formed in the lever bracket.

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