JPH0742741U - Pedal link type change device - Google Patents

Abstract

(57) [Abstract] [Purpose] Providing a pedal link mechanism that does not require a ball joint [Configuration] First bush in a bush mounting hole 16 provided at the other end 14 of the change arm 10 mounted to the gear shift shaft 2 The first engaging portion 22 of 20 is fitted, and the bent portion 36 of the L-shaped joint 32 formed at one end of the link member 30 is inserted into the attachment hole 23 for the link member. Is engaged with the other end 14 by the locking claw 21, and the second engaging portion 26 of the first bush 20 is engaged with the L-shaped joint 32 to prevent the bent portion 36 from coming off. Similarly, the bent portion 38 side of the link member 30 is attached to the change pedal 50 side by the second bush 40.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a pedal link type change device used in a motorcycle or the like.

[0002]

[Prior art]

 As an example of such a pedal link type change device, there is Japanese Utility Model Laid-Open No. 59-94911-1. This includes a change pedal rotatably attached to the motorcycle body, a change arm attached to the gear shift shaft of the transmission, and a link member connecting the change arm and the change pedal. The connection at both ends of the link member is performed via ball joints, and the connection portion between the link member and the ball joint is provided with a length adjusting portion.

[0003]

[Problems to be solved by the device]

 By the way, in the case of the above structure, since the ball joint is used, it is expensive, and since the joint portion between the ball joint and the change pedal and the change arm is caulked, caulking work and subsequent rust prevention coating are required. .

Further, the ball joint itself needs to be lubricated, and a dust boot must be provided to prevent dust.

In addition, it is necessary to connect the ball joint and the link member with a screw, and to provide a length adjusting portion with a lock nut at this connecting portion. Moreover, this length adjusting portion must be provided at both ends of the link member. In addition, either side of the threaded parts provided at both ends of the link member shall be reverse-threaded. Therefore, it is also desired to provide a simple connecting structure that can eliminate the need for the length adjusting portion. The present invention solves these problems.

[0006]

Means for Solving the Problems In order to solve the above problems, a pedal link type change device of the present invention includes a change pedal rotatably attached to a vehicle body and a change pedal attached to a gear shift shaft of a transmission. In a pedal link type change device that includes an arm and a link member that connects the change arm and the change pedal, a mounting hole for a bush is provided on the change pedal and the change arm, and a resin bush is attached to the mounting hole for the bush. For a link member that engages the provided first engaging portion and is rotatable with respect to the shaft of the bush mounting hole, and that extends to the axial direction of the bush mounting hole at the first engaging portion. An attachment hole is provided, the tip of the link member bent into a substantially L shape is fitted into the attachment hole for the link member, and the end of the link member is provided on the bush. Characterized in that engaged in the second engagement portion.

The link member may be provided with a length adjusting portion.

[0008]

[Action]

 The first engaging portion provided on the bush is locked in the bush mounting hole formed in the change pedal or the change arm, and is rotatably mounted on the shaft of the bush mounting hole. The end of the link member bent in a substantially L-shape is fitted into the link member mounting hole provided in the engaging portion of No. 1, and the end of the link member is engaged with the second engagement provided in the bush. When engaged in the section, the link member is connected to the change pedal or change arm via the bush.

In this case, since the bush is made of resin, it can be manufactured at a comparatively low cost as compared with the conventional ball joint, and it only needs to be attached to the change arm or the change pedal, and no rust prevention coating is required. Is. In addition, self-lubrication eliminates the need for lubrication and dust boots. In addition, if the link member is provided with a length adjusting portion, the length of the link member can be freely adjusted.

[0010]

【Example】

 One embodiment will be described with reference to FIGS. 1 to 6B. FIG. 1 is a plan view of a pedal link mechanism of a motorcycle, FIG. 2 is a side view of the same, and FIG. 3 is an exploded view of each component in the plan view of FIG.

In these drawings, the pedal link mechanism includes a change arm 10, a first bush 20, a link member 30, a second bush 40, and a change pedal 50. One end of the change arm 10 is a gear shift shaft of a transmission. 2 (FIG. 2) so as to be integrally rotatable, and as apparent from FIG. 4, the first engaging portion 22 of the first bush 20 is inserted into the bush mounting hole 16 formed in the other end 14. Are engaged with each other and locked by a locking claw 21 at the tip thereof.

As is apparent from FIGS. 6A and 6B, the change arm 10 has a first engaging portion 22 and a second engaging portion 26 which are made of an appropriate resin material such as nylon having a high self-lubricating property. Is being formed.

The first engaging portion 22 includes a link member mounting hole 23 and a split groove 24, and the split groove 24 is compressed when the first engaging portion 22 is fitted into the bush mounting hole 16. It is for radial deformation. The second engaging portion 26 has a substantially C-shaped cross section with an opening 28 having a narrow frontage, and is capable of fitting and locking the link member 30.

The link member 30 is divided into a main body 31 and an L-shaped joint 32, and a male screw portion 31 a formed at one end of the main body 31 has a female arm portion 33 formed at one end of the L-shaped joint 32. The length adjusting portion is engaged with the screw portion 33a and the length can be freely adjusted by the lock nut 34. The outer diameter of the screw arm portion 33 is such that it can be tightly fitted to the second engaging portion 26 of the first bush 20.

The L-shaped joint 32 has a bent portion 36 whose other end is bent at a substantially right angle, and its outer diameter is such that it can be closely inserted into the link member mounting hole 23 of the first bush 20.

In addition, an end portion of the main body 31 on the side opposite to the male screw portion 31 a is a bent portion 38 that bends in a substantially L-shape in a direction opposite to the L-shaped joint 32. Therefore, the entire link member 30 is formed in a substantially crank shape having substantially L-shaped bent portions 36 and 38 whose opposite ends face each other.

The second bush 40 is a member having substantially the same structure as the first bush 20, and has a first engaging portion 42 having an engaging claw 41 at its tip and a second engaging portion having a substantially C-shaped cross section. The first engaging portion 42 is provided with a link member mounting hole into which the bent portion 38 can be tightly inserted. Although not shown, a split groove similar to the split groove 24 is also formed in the first engaging portion 42.

The change pedal 50 includes a step plate 52 at a front end and a boss 54 at a rear end, and the boss 54 is rotatable around a support shaft 4 (FIGS. 2 and 5) provided on a side surface of a vehicle body (not shown). Installed on.

A link bracket 56 is formed integrally with the boss 54 so as to project downward, and the engaging portion 42 of the second bush 40 is fitted and locked in the bush mounting hole 58 provided therein. Has become.

Next, the operation of this embodiment will be described with reference to FIGS. 3 and 6A and 6B. To assemble the pedal link mechanism, first, the first bush 20 and the second bush 40 are attached to the change arm 10 and the change pedal 50, respectively.

In the first bush 20, as shown in FIG. 6A, the first engaging portion 22 is fitted into the bush mounting hole 16. At this time, since the split groove 24 is formed, the first engaging portion 22 is easily deformed and is inserted into the bush mounting hole 16.

Next, as shown in FIG. 6B, when the bent portion 36 of the L-shaped joint 32 is inserted into the link member mounting hole 23, the first engaging portion 22 is pushed and expanded in the bush mounting hole 16. As a result, the locking claw 21 is securely engaged with the edge of the bush mounting hole 16 and does not come off from the bush mounting hole 16. Therefore, when the second engaging portion 26 is rotated around the first engaging portion 22 in the direction of the screw arm portion 33 and the opening portion 28 is pressed against the screw arm portion 33, the screw arm portion 33 is opened. 28 into the second engaging portion 26 and tightly fit and integrate with each other, so that the body 31 of the L-shaped joint 32 does not come out of the link member mounting hole 23 of the first engaging portion 22. The connection between the L-shaped joint 32 side of 30 and the change arm 10 is completed.

Similarly, the second bush 40 is also attached to the link bracket 56 of the change pedal 50, the bent portion 38 of the link member 30 is inserted into the link member mounting hole, and the retaining portion 46 is located near the bent portion 38. By engaging with 31, the connection between the bent portion 38 side of the main body 31 and the change pedal 50 via the second bush 40 is also completed.

The pedal link mechanism shown in FIGS. 1 and 2 is assembled by such work, and therefore, when the step plate 52 is stepped on, the link member 30 is moved by the rotation of the link bracket 56 around the support shaft 4. Then, the change arm 10 is rotated by the L-shaped joint 32, and as a result, the gear shift shaft 2 integrated with the change arm 10 is rotated to perform the pedal type gear shifting operation. In this pedal link mechanism, the length can be adjusted by loosening the lock nut 34 and adjusting the length of the engaging portion of the male screw portion 31a and the female screw portion 33a. Moreover, it is sufficient to provide this length adjustment part only in one place.

At this time, in each of the first bushes 20 and the second bushes 40, the first engaging portion 22 and the engaging portion 42 are rotatably mounted in the bush mounting hole 16 and the bush mounting hole 58, respectively. Therefore, it is possible to operate the link mechanism. Also, since it has self-lubricating properties, lubrication such as grease lubrication is unnecessary, and dust boots are not required.

Further, since the first bush 20 and the second bush 40 are manufactured by resin molding that is highly producible in mass production, they are relatively inexpensive as compared with the conventional ball joint, and moreover, the change arm 10 and the change pedal 50 can be manufactured. Since the installation is a simple engagement work and the conventional caulking can be eliminated, not only the operation is quick and easy, but also the subsequent rust prevention coating is unnecessary. Moreover, since the second engaging portion 26 and the slip-out preventing portion 46 can be connected to the link member 30 by simple engagement, the work is easy and quick in this respect as well.

FIG. 7 is a view corresponding to FIG. 1 of another embodiment in which only the length adjusting unit is changed. If the same functional parts as those of the previous embodiment are indicated by the same reference numerals, the length adjusting of this embodiment will be described. The part is composed of an adjusting nut 60 provided with both forward and reverse screws, a male screw portion 33b by changing the screw arm portion 33 of the L-shaped joint 32, and a male screw portion 31a which is unchanged from the previous embodiment. It

In this case, the male screw portion 31a and the male screw portion 33b are formed in opposite or opposite screws, and by turning the adjusting nut 60, the gap between the female screw portion 31a and the male screw portion 33b is changed. The length of the entire pedal link mechanism can be adjusted by adjusting the length. The configuration other than the length adjusting portion is the same as in the previous embodiment. In this way, one place can be formed in the middle of the link member 30 regardless of the bushes 20, 40.

Note that this embodiment is not limited to these embodiments and can be applied in various ways. For example, the link member 30 does not have a length adjusting portion, and both ends are bent in opposite directions to each other into a substantially L-shape. Can be configured as a single rod-shaped or plate-shaped member.

[0030]

[Effect of device]

 In the present invention, since the link member is connected to the change arm or the change pedal via the resin bush which is rotatably retained, the expensive ball joint which was conventionally required can be eliminated and the cost can be reduced. Be able to manufacture.

Moreover, the end portion of the link member is formed into an L-shaped bent portion, the bush mounting hole for inserting the end portion is provided in the first engaging portion provided in the bush, and the end portion of the link member is engaged. Since the second engaging portion is provided integrally with the bush, the bent portion can be inserted and the retaining portion can be engaged with the link member. Therefore, the entire structure of the pedal link mechanism is simplified, caulking work for mounting and subsequent rust-proof coating are unnecessary, and the assembling work is simple and quick. In addition, the dust cover is not required because lubrication unlike the conventional ball joint is not required.

Moreover, the length adjusting part is not necessary, and if provided, the pedal position can be adjusted.

[Brief description of drawings]

FIG. 1 is a plan view of a pedal link mechanism of a motorcycle according to an embodiment.

FIG. 2 is a side view of the same.

FIG. 3 is an exploded view showing each component in a plan view.

FIG. 4 is an enlarged sectional view taken along line 4-4 of FIG.

5 is an enlarged sectional view taken along line 5-5 of FIG.

FIG. 6A is a diagram for explaining how to attach a bush.

[FIG. 6B] Same as above

FIG. 7 is a view corresponding to FIG. 1 of another embodiment.

[Explanation of symbols]

2: Gear shift shaft, 4: Support shaft, 10: Change arm, 16: Mounting hole for bush, 20: First bush, 2
1: Locking claw, 22: First engaging portion, 23: Attachment hole for link member, 26: Second engaging portion, 30: Link member, 3
1: body, 31a: male screw part, 32: L-shaped joint,
33: screw arm portion, 33a: female screw portion, 33b: male screw portion, 34: lock nut, 36: bent portion, 38: bent portion, 40: second bush, 42: first engaging portion, 43 :
Link member mounting hole, 46: Second engaging portion, 50: Change pedal, 58: Bush mounting hole

Claims (2)

[Scope of utility model registration request] 1. A pedal link type having a change pedal rotatably attached to a vehicle body side, a change arm attached to a gear shift shaft of a transmission, and a link member connecting the change arm and the change pedal. In the change device, at least one of the change pedal and the change arm is provided with a bush mounting hole, and the bush mounting hole is provided with a resin bush.
Is engaged with the engaging portion of the bush to be rotatable about the axis of the bush mounting hole, and the first engaging portion is provided with a link member mounting hole extending in the axial direction of the bush mounting hole. The tip of the link member bent into a substantially L-shape is fitted into the link member mounting hole, and the base portion orthogonal to the tip fitted into the mounting hole of the first engaging portion of the link member is integrated with the bush. And a second engaging portion provided with a link attaching portion having an axis line orthogonal to the axis line of the attaching hole of the first engaging portion. 2. The pedal link type change device according to claim 1, wherein the link member is provided with a length adjusting portion.