JPH1016861A - Separate type handle bar attaching structure for motorcycle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the number of part items and to simplify an entire structure so as to improve appearance in a separate type handle bar attaching structure for a motorcycle. SOLUTION: In a motorcycle separate type handle bar attaching structure in which the inner end parts of a pair of left and right handle bars 4 are fixed to the left and right outer end parts of an upper bracket 6, a cylindrical part 12 is formed in the inner end part of the handle bar 4 so as to be fitted in the upper end part of a front fork 2 for its inner diameter part and engaged with the fitting hole 8 of the outer end part of the upper bracket 6 for its outer diameter part and, by fastening the fitting hole 8 by a bolt 10 while the cylindrical part 12 is fitted in the fitting hole 8 and the upper end part of the front fork 2 is inserted into the cylindrical part 12, the handle bar 4 and the front fork 2 are firmly fixed together to the upper bracket 6.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a separate handlebar mounting structure for a motorcycle.

[0002]

2. Description of the Related Art FIG. 3 shows a conventional separate handlebar mounting structure for a motorcycle. In this mounting structure, the upper end of the front fork d is fitted into a fitting hole c at the outer end of the upper bracket b having a hole a through which the upper end of the steering stem is inserted. And a handlebar e is fastened with a bolt f.

FIG. 4 shows another conventional structure for mounting a separate handlebar. In this case, the outer periphery of the upper end of the front fork d is clamped between the semicircular side end surfaces of each of the upper bracket b and the handle bar e by bolts f and held therebetween.

[0004]

In the handlebar mounting structure shown in FIG. 3, since the handlebar e is further fixed to the front fork d mounted on the upper bracket b, the number of parts is large. The structure is complicated and the appearance around the handle is affected.

Further, in the mounting structure shown in FIG.
Since it is necessary to perform fastening at two places before and after the upper end, the number of fastening bolts f increases, and the problem of the number of parts remains.

The present invention has been made in view of the above-mentioned conventional problems, and provides a mounting structure for a separate type handlebar of a motorcycle which can reduce the number of parts and improve the appearance around the handlebar. The purpose is to:

[0007]

The present invention has the following configuration to achieve the above object. That is, the invention according to claim 1 is a mounting structure for a separate handlebar of a motorcycle, in which the inner ends of the pair of left and right handlebars are fastened to the left and right outer ends of the upper bracket. A cylindrical portion that fits into the upper end of the front fork at the inner diameter portion and fits into the fitting hole at the outer end of the upper bracket at the outer diameter portion, and inserts the cylindrical portion into the fitting hole. A separate handle for a motorcycle, wherein the handlebar and the front fork are jointly fastened to the upper bracket by tightening the fitting hole with a bolt while the upper end of the front fork is inserted into the cylindrical portion. The mounting structure of the bar.

According to a second aspect of the present invention, a locking projection is provided at a lower end of the cylindrical portion so as to be locked to a lower surface of the upper bracket when the cylindrical portion is inserted into the fitting hole. The mounting structure for a separate handlebar of a motorcycle according to claim 1, characterized in that:

According to the present invention, the fitting hole of the upper bracket is tightened in a state where the cylindrical portion of the handlebar, the fitting hole of the upper bracket, and the upper end of the front fork are overlapped. For the attachment, for example, one notch provided in the fitting hole may be bolted. Therefore, the number of bolts for fastening is small, the structure is simple, and the appearance around the handle is improved.

[0010] Further, since a locking projection is provided at the lower end of the cylindrical portion to be locked to the lower surface of the upper bracket in a state where the cylindrical portion is inserted into the fitting hole. When the upper end of the front fork is inserted into and removed from the upper end of the front fork, even if the upper end of the front fork comes into contact with the cylinder, the engagement protrusion prevents the cylinder from coming off the fitting hole.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. In the present embodiment, as shown in FIG. 1 (only the right side with respect to the vehicle traveling direction is shown in the figure), upper ends of a pair of left and right front forks 2 and
This is a mounting structure for a separate handlebar of a motorcycle in which the inner ends of a pair of left and right handlebars 4 are fastened to the left and right outer ends of an upper bracket 6.

The upper bracket 6 has a hole 6a at the center for inserting the upper end of a steering stem projecting from the center of an under bracket (not shown). A substantially circular fitting hole 8 is formed at the left and right outer ends of the upper bracket 6.
Are provided in the vertical direction, and a notch 8a is formed in the rear part (rear side of the vehicle) in the vertical direction. A bolt fastening portion 6b is formed outside the notch 8a, and a pair of upper and lower bolt holes 6b1 is formed in the bolt fastening portion 6b. Inside the notch 8a, a female screw hole (not shown) is provided at a position facing the upper and lower bolt holes 6b1, and the bolt 10 inserted from the bolt hole 6b1 is screwed into the female screw hole. Is done.

The front fork 2 is a so-called telescopic fork mainly composed of an outer tube and an inner tube, and the illustrated front fork 2 shows either the outer tube or the inner tube.

The handlebar 4 comprises a substantially cylindrical mounting portion 4a mounted on the upper bracket 6, and a rod-shaped handle portion 4b extending outward from the front of the mounting portion 4a. At the lower portion of the mounting portion 4a, which is the inner end of the handlebar 4, a cylindrical portion 12 that fits with the upper end of the front fork 2 at the inner diameter and fits into the fitting hole 8 of the upper bracket 6 at the outer diameter. Are integrally formed via an annular step portion 14.

A notch 1 is formed at the rear of the cylindrical portion 12 along the vertical direction from the upper end to the lower end of the mounting portion 4a.
2a is provided, and the deformation of the cylindrical portion 12 can be absorbed by bringing the opposed surface of the notch 12a close to each other at the time of fastening. Further, the notch 8 of the upper bracket 6 is provided near the lower end of the notch 12a and on the lower surface of the cylindrical portion 12.
A locking projection 12b having a width equal to or smaller than the width dimension of a is provided.

Next, a method of attaching the handlebar 4 and the front fork 2 to the upper bracket 6 will be described. First, the cylinder 12 of the handlebar 4 is inserted into the fitting hole 8 from above, and the upper end of the front fork 2 is inserted into the cylinder 12. At this time, the engaging projection 12b is inserted and moved into the notch 8a of the upper bracket 6. The state in which the tube portion 12 is completely inserted, that is, the handlebar 4
When the stepped portion 14 is in contact with the upper surface of the upper bracket 6, the upper end of the locking projection 12b is flush with or lower than the lower surface of the upper bracket 6. When the user rotates the engaging projection 4, the engaging projection 12b is hooked on the lower surface of the upper bracket 6 (see FIG. 2).

The two upper and lower fastening bolts 10 are inserted from the bolt holes 6b1 of the upper bracket 6 and screwed into the female screw holes, so that the fitting holes 8 are fastened to the outer peripheral surface of the cylindrical portion 12. , The handlebar 4, the front fork 2 and the upper bracket 6 are fastened.

According to the present embodiment having the above-described configuration, the cylindrical portion 12 of the handlebar 4 and the upper bracket 6
The fitting hole 8 of the upper bracket 6 is tightened with the two bolts 10 in a state where the fitting hole 8 of the front fork 2 and the upper end of the front fork 2 are overlapped with each other. Is achieved by screwing. Therefore,
Fewer bolts are required, the structure is simple, and the appearance around the handle can be improved.

Further, when the front fork 2 is inserted into and removed from the cylindrical portion 12, even if the upper end of the front fork 2 comes into contact with the cylindrical portion 12, the cylindrical portion 12 is locked by the locking projection 12b and the step portion 14. Therefore, it is possible to prevent the cylindrical portion 12 from coming off from the fitting hole 8, thereby improving maintainability and assemblability.

This embodiment is a preferred embodiment of the present invention, and the technical scope of the present invention is not limited to this embodiment.

[0021]

As described above, according to the present invention, the handlebar, the upper bracket, and the front fork can be easily fastened in a stacked state, so that the number of parts is reduced and the appearance around the handle is improved. Can be achieved.

Further, it is possible to reliably prevent the handlebar from being detached from the upper bracket when the front fork is inserted or removed, so that maintenance and assemblability can be improved.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a mounting structure of a separate type handlebar of the present embodiment.

FIG. 2 is a cross-sectional view of a mounting structure for a separate handlebar according to the present embodiment.

FIG. 3 is an exploded perspective view of a conventional structure for mounting a separate handlebar.

FIG. 4 is an exploded perspective view of another conventional handlebar mounting structure.

[Explanation of symbols]

 2 Front fork 4 Handlebar 6 Upper bracket 8 Fitting hole 10 Bolt 12 Cylindrical part 12b Locking projection

Claims (2)

[Claims] 1. A mounting structure for a separate handlebar of a motorcycle, wherein inner ends of a pair of left and right handlebars are fastened to left and right outer ends of an upper bracket. A cylindrical portion that fits with the upper end of the front fork at the portion and that fits with the fitting hole at the outer end of the upper bracket at the outer diameter portion, and inserts the tubular portion into the fitting hole and A separate handlebar mounting structure for a motorcycle, wherein the handlebar and the front fork are jointly fastened to the upper bracket by tightening the fitting hole with a bolt with the upper end of the front fork inserted in the part. . 2. A lower end of said tubular portion is provided with a projection projecting from a lower surface of said upper bracket when said tubular portion is inserted into said fitting hole.
The mounting structure of the separate handlebar of the motorcycle described in the above.