JPH03224888A - Attaching structure of handle - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to the structure of attaching a handlebar to a motorcycle or the like employing an inverted front fork.

[Conventional technology]

2. Description of the Related Art Conventionally, as a front fork for a motorcycle or the like, there is an inverted front fork in which an inner cylinder is inserted into an outer cylinder from below. As a handle attached to this type of front fork, there is a so-called clip-on type handle in which a boss portion of the handle fits into the upper part of the outer cylinder. This handle is configured such that the hole diameter of the boss fitting hole can be adjusted by a bolt, and is fixed to the outer cylinder by tightening the outer cylinder with the boss. Additionally, this handle is usually fastened to the upper bracket that connects the left and right outer cylinders via a locking bolt so that it does not rotate around the outer cylinder when pushed or pulled by the driver. Ta.

[Problem to be solved by the invention]

However, when the handle is fixed to the outer cylinder of the inverted front fork in this way, there is a problem in that vibrations from the vehicle body, engine, etc. are directly transmitted to the handle because the inverted front fork has high rigidity.

[Means to solve the problem]

The structure for attaching the handle according to the present invention is that the fitting hole for the outer cylinder in the boss part is formed slightly larger than the outer cylinder, and a step part for locking the handle is provided on the outer periphery of the outer cylinder, and the upper bracket and the above-mentioned A boss portion is arranged between the upper bracket and the boss portion, and between the boss portion and the step portion, from the opening edge of the fitting hole in the boss portion to the inside of the fitting hole. An annular elastic body that faces toward the outside and fits into the outer cylinder is elastically mounted, and a stopper for preventing rotation of the handle is supported via the elastic body.

[For production]

The handlebar is elastically supported on the front fork via the elastic body.

〔Example〕

Hereinafter, one embodiment of the present invention will be described in detail with reference to FIGS. 1 to 3.

Fig. 1 is a side view showing a front fork of a motorcycle that employs the handle mounting structure according to the present invention, Fig. 2 is a sectional view taken along the line nn in Fig. 1, and Fig. 3 is a It is a sectional view taken along the line -■.

In these figures, 1 is a frame of a motorcycle, and 2 is a front fork rotatably supported by a steering head pipe of this frame 1.

This front fork 2 is an inverted type in which an inner tube 4 as an inner cylinder is inserted from below into an outer tube 3 as an outer cylinder, and a pair of left and right outer tubes 3
are connected to each other by an upper bracket 5 and a lower bracket 6. The front fork 2 is connected to the frame 1 via the upper and lower brackets 5 and 6. In addition, 3a is a handle step part for preventing the handle from shifting downward, which will be described later.This step part 3a is integrated with the upper outer periphery of the outer tube 3 by cutting the outer periphery of the outer tube 3. is formed. In addition to forming this step integrally with the outer tube 7 as described above, a step forming member separate from the outer tube 3 may be attached to the outer tube 3. The step forming member may be, for example, a combination of a circlip through which the outer tube 3 passes and a washer. To form a step with a circlip and washer, the outer tube 3
This is accomplished by forming a groove in the outer circumference of the groove, locking a circlip in the groove, and supporting the step-forming washer on the circlip.

Reference numeral 7 denotes a handle, and the handle 7 includes a boss portion 9 in which an outer tube fitting hole 8 is bored and is attached to the outer tube 3 via a damper to be described later, and is attached to the boss portion 9 with a bolt 1o. Handle body 1
1, and is arranged between the upper bracket 5 and the stepped portion 3a of the outer tube 3 by inserting the hair outer tube 3 into the fitting hole 8.

The diameter of the fitting hole 8 is set to be slightly larger than the outer diameter of the outer tube 3, and the opening edge on the upper surface side and the opening edge on the lower surface side of the boss portion 9 have a diameter larger than that of the fitting hole 8. A damper recess 9a having a large hole diameter is formed.

Reference numeral 12 denotes a damper for connecting the handle 7 and the front fork 2. The damper 12 is made of an elastic material such as rubber, and is integrally molded into an annular shape having a small diameter part 12a and a large diameter part 12b. Also, this damper 1
2 has an inner diameter set to fit with the outer tube 3, and the small diameter portion 12a is inserted into the recess 9 of the boss portion 9.
The large diameter portion 12b is fitted into the inside of the boss portion 9 and is mounted on both upper and lower sides of the boss portion 9, with the large diameter portion 12b facing the upper and lower surfaces of the boss portion 9. A damper 1 disposed below the boss portion 9
2 is in contact with the stepped portion 3a of the outer tube 3 via a washer 13, and the damper 12 disposed on the upper side is in contact with the upper bracket 5. That is, the boss portion 9
A damper 12 is interposed between the inner peripheral part of the outer tube 3 and the step part of the outer tube 3, between the boss part 9 and the stepped part of the outer tube 3, and between the boss part 9 and the upper bracket 5. , the boss portion 9 is connected to the front fork 2 via the damper 12. Note that 14 is a collar inserted in the fitting hole 8 of the boss portion 9 between the outer peripheral surface of the outer tube 3 and the hole wall surface of the fitting hole 8. It is formed by rolling it. If the collar 14 is structured to be interposed between the outer tube 3 and the boss portion 9 in this way, it is possible to prevent the outer tube 3 and the boss portion 9 formed of aluminum alloy from coming into contact with each other and being worn out. can.

Reference numeral 15 designates a stopper for preventing rotation of the handle 7 around the outer tube 3 when a load is applied to the handle 7 by pushing or pulling it by the driver, and the stopper is located in the retaining hole 5a of the upper bracket 5. Retaining member 16 to be fitted
and a bolt 17 for fixing this retaining member 16 to the boss 9 of the handle 7. The engagement member 16 has two collars 168.16b with different diameters disposed coaxially, and an elastic material 16C such as rubber is interposed between these collars 16a and 16b. It is fixed to the collars 16a and 16b by baking. That is, even if the boss portion 9 and the upper bracket 5 are connected using the stopper 15, the elastic material 16 is not present between the two.
c will intervene. Further, 5b is the elastic material 16
This handle stop part 5b is a handle stop part for preventing the rotation of the handle 7 when the handle 7 is rotated while bending the handle c. It protrudes toward the section 9 side.

A convex wall 9b is formed at a portion of the boss portion 9 corresponding to the handle stop portion 5b, and faces the side surface of the handle stop portion 5b at a predetermined distance. That is,
When the handle 7 is forcibly rotated against the elastic force of the elastic member 16c, the convex wall 9b of the boss portion 9 comes into contact with the handle stop portion 5b, preventing the handle 7 from rotating any further. can be prevented. Note that 18 is a camp for closing the engagement hole 5a of the upper bracket 5.

According to the structure, the installation of the handle configured in this way is as follows:
The handle 7 is connected to the front fork 2 via the damper 12 and the stopper 15, and the force transmitted from the handle 7 during steering etc. is transmitted to the front fork 2 via these.

Therefore, according to the present invention, an elastic body is interposed in all the connecting parts between the handle 7 and the front fork 2, and the handle 7 is connected to the front fork 2 through the elastic body.
It will be supported by

〔Effect of the invention〕

As explained above, the structure for attaching the handle according to the present invention is such that the fitting hole for the outer cylinder in the boss part is formed slightly larger than the outer cylinder, and a step part for locking the handle is provided on the outer periphery of the outer cylinder. , a boss part is arranged between the upper bracket and the step part, and an opening edge of the fitting hole in the boss part is provided between the upper bracket and the boss part and between the boss part and the step part. The annular elastic body facing into the fitting hole and fitting with the outer cylinder is elastically loaded, and the stopper for preventing rotation of the handle is supported via the elastic body, so that the handlebar is elastically supported on the front fork via the elastic body. will be done.

Therefore, the up and down that is transmitted from the car body to the steering wheel.

Since vibrations in either the left or right direction can be alleviated by the elastic body, the handle can always be kept in a stable state. Further, when a large load is applied to the handlebar during braking or the like, the boss portion and the outer cylinder come into contact after the elastic body is bent, so that the sense of unity between the handlebar and the vehicle body is not impaired. Furthermore, according to the present invention, when fixing the handle, the outer cylinder of the front fork is not tied down by the boss part of the handle, so there is no possibility that the outer cylinder will be deformed due to over-tightening of the tied part.

[Brief explanation of drawings]

Fig. 1 is a side view showing a front fork of a motorcycle that employs the handle mounting structure according to the present invention, Fig. 2 is a sectional view taken along the line nn in Fig. 1, and Fig. 3 is a It is a sectional view taken along the line -■. 2...Front fork, 3...Outer tube, 3a...Step, 4...Inner tube, 5...Upper bracket, 7...Handle, 8
...0 Fitting hole, 9...Boss part, 12...Damper, 1
5... Stopper, 16C... Elastic material.

Claims (1)

[Claims] A handle mounting structure in which a boss part of the handle is fitted into an outer cylinder of an inverted front fork, and a stopper for preventing rotation of the handle is interposed between the upper bracket connecting the left and right outer cylinders and the boss part, The fitting hole for the outer cylinder of the boss part is formed slightly larger than the outer cylinder, and a step part for locking the handle is provided on the outer periphery of the outer cylinder, and the boss part is provided between the upper bracket and the step part. between the upper bracket and the boss part and between the boss part and the stepped part,
A handle characterized in that an annular elastic body facing into the fitting hole from the opening edge of the fitting hole in the boss portion and fitting with the outer cylinder is elastically loaded, and the stopper is supported via the elastic body. Mounting structure.