JPH082468A - Handle supporting structure for bicycle - Google Patents

Abstract

PURPOSE:To relieve an impact caused in a handle part during cycling by means of a simple structure and to reduce costs. CONSTITUTION:A handle stem 20 consists of a handle column 4 and a projection part supporting a handle bar 10, and in the handle column 4, the handle bar 10 is installed via the projection part, and the projection part consists of a supporting body 4a projectingly fixed in the handle column 4, a supporting member 11 supporting the handle bar 10, a rubber bush type torsion damper connecting the supporting body 4a and the supporting member 11 together flexibly, and the like.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a handlebar support structure for a bicycle, and more particularly to a handlebar support structure for a bicycle which is designed to reduce a shock generated at a front portion of the bicycle during traveling.

[0002]

2. Description of the Related Art Conventionally, as a structure for providing a shock absorbing function to a front portion when riding a bicycle, for example, a front fork having a shock absorbing function (for example, Japanese Utility Model Laid-Open No. 4-35988). Micro film) and the type that has a shock absorbing function in the handle portion is known.

In general, the former front fork provided with a hydraulic damper mechanism is widely used by tightening the mainstream, and the latter handle portion also employs a similar combination of hydraulic damper and metal coil spring. Has been done.

[0004]

However, in any case, in the case of the conventional type having a shock absorbing function, whether the front fork absorbs the shock during traveling,
Alternatively, there is a difference in whether it is absorbed by the handle portion, but there is a problem that the structure is complicated and expensive. The present invention has been devised in view of the above conventional problems, and is a handle for a bicycle that can reduce the impact generated on the handle portion when traveling on a bicycle with a simple structure and can be used at low cost. It is intended to provide a support structure.

[0005]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention has the following advantages:
The gist of the present invention is that a cushioning member that absorbs and absorbs vibrations of the handle in the vertical direction is provided bendably. The protruding portion that supports the handlebar includes a support body that is protrudingly fixed to the handle column, a support member that supports the handlebar, and a buffer member that connects the support body and the support member in a bendable manner. The cushioning member integrally fixes the elastic member between the inner cylinder connected to the support body projectingly fixed to the handle column via the shaft and the outer cylinder connected to the projecting member supporting the handlebar. And then configure. Further, as the elastic member, a rubber-like elastic body and a coil-shaped leaf spring are used.

[0006]

The present invention is constructed as described above, and a rubber bush type cushioning member, that is, a twisting member, is provided between the support member projectingly fixed to the handle column and the support member supporting the handle bar. By connecting the dampers in a bendable manner, it is possible to provide a lightweight and simple handle support structure with excellent vibration damping properties. As a result, it is possible to provide excellent riding comfort while traveling, absorb and relieve the impact force when the vehicle collides with an obstacle, and increase the safety when traveling by bicycle.

[0007]

Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a front view of a bicycle 1 embodying the present invention, FIG. 2 is an enlarged plan view of an X portion of FIG. 1, FIG. 3 is a front view of FIG. 2, and 2 is a front fork supporting a front wheel 3. Is a handle column connected to the front fork 2, 5 is a top tube 5a, a down tube 5b,
A frame body including a seat tube 5c is shown, and a saddle 7 is supported by the frame body 5 via a seat post 6.

The handle stem 20 is a handle column 4
And a protrusion 8 for supporting the handlebar 10. The handlebar 10 is attached to the handle column 4 via the protrusion 8, and the protrusion 8 is fixed to the handle column 4 by a support body. 4a, a support member 11 that supports the handlebar 10, and a buffer member 9 that is a rubber bush type torsion damper or the like that connects the support body 4a and the support member 11 in a bendable manner.

As shown in FIGS. 3, 5 and 6, the cushioning member 9 has an inner cylinder 13 connected to a support 4a projectingly fixed to the handle column 4 via a shaft 12 and a handle bar 10. An elastic member 15 such as a rubber-like elastic body is integrally fixed to the outer cylinder 14 connected to the support member 11 for fixing the same by burning or the like. As the elastic member 15, a coil-shaped plate spring may be used instead of the rubber-like elastic body.

As shown in FIGS. 3 and 4, the tip end of the support member 4a fixed to the handle column 4 and the base end portion 11a of the support member 11 for supporting the handle bar 10 are as described above. , Clamp member 1 with cushioning member 9 in between
It is detachably tightened and fixed by 6. Further, the handlebar 10 is detachably connected and fixed to the tip end portion 11b of the support member 11 via a fastening metal member 17.

According to the present invention, a rubber bush type cushioning member 9 is flexibly connected between the supporting member 4a protrudingly fixed to the handle column 4 and the supporting member 11 for supporting the handlebar 10 as described above. By doing so, it is possible to absorb and mitigate the impact force and vertical vibration applied to the occupant who grips the handlebar against vertical vibration during traveling and the shock of the bicycle, by elastic deformation of the cushioning member 9, and is therefore lightweight with excellent vibration damping properties. It has a simple handle support structure, which results in excellent riding comfort while traveling, absorbs and absorbs the impact of collision with obstacles, and enhances safety when riding a bicycle. It is a thing.

[0012]

As described above, according to the present invention, a buffer member for absorbing and relaxing the vertical vibration of the handle is provided in the middle of the protruding portion for supporting the handlebar as described above so as to be bendable. With such a structure, it is possible to absorb and mitigate the shock generated in the handle part when riding a bicycle, and it can be used at low cost. As a result, it is excellent in riding comfort while traveling, and even when it collides with an obstacle, It has the effect of absorbing and relaxing the impact force and increasing the safety when riding a bicycle.

[Brief description of drawings]

FIG. 1 is a front view of a bicycle embodying the present invention.

FIG. 2 is an enlarged plan view of an X portion of FIG.

FIG. 3 is a front view of FIG. 2;

FIG. 4 is a side view taken along the line AA of FIG.

5 is a cross-sectional view taken along the line BB of FIG.

6 is a cross-sectional view taken along line CC of FIG.

[Explanation of symbols]

1 Bicycle 2 Front Fork 4 Handle Column, 4a Support 5 Frame Body 6 Seat Post 7 Saddle 8 Projection 9 Buffer Member 10 Handlebar 11 Support Member 12 Shaft 13 Inner Cylinder 14 Outer Cylinder 15 Elastic Member 20 Handle Stem

Claims (5)

[Claims] 1. A handlebar support structure for a bicycle, comprising a handlebar stem comprising a handlebar column and a protrusion for supporting the handlebar, wherein a vibration of the handlebar in a vertical direction is provided between the protrusions for supporting the handlebar. A handlebar support structure for a bicycle, characterized in that a cushioning member for absorbing and absorbing is provided bendably. 2. The protrusion for supporting the handlebar,
The handlebar support structure for a bicycle according to claim 1, comprising a supporter protrudingly fixed to the handlebar column, a supporter for supporting the handlebar, and a buffer member for connecting the supporter and the supporter in a bendable manner. 3. The elastic member is provided between an inner cylinder connected to a support body projectingly fixed to the handle column via a shaft and an outer cylinder connected to the projecting member supporting the handlebar. The bicycle handle support structure according to claim 1, wherein the members are integrally fixed. 4. The handlebar support structure for a bicycle according to claim 1, wherein the elastic member is a rubber-like elastic body. 5. The bicycle handle support structure according to claim 1, wherein the elastic member is a coiled leaf spring.