JPH0891273A - Handle bar holding structure of motorcycle - Google Patents

Abstract

PURPOSE: To provide a handlebar holding structure of a motorcycle in which the height of a handlebar holder can be regulated very easily, and no excessive adjuster part is made necessary. CONSTITUTION: In a holding structure of the handlebar 13 of a motorbicycle, an upper bracket 40a forming a through hole 44 penetrating from the installing position of the handle bar holder 42 of the upper bracket 40a to the rear surface of the above installing position; and a screw rod body 46 formed projecting integrally to the side end 42a opposite to the upper bracket 40a of the handle bar holder 42, and having a screw 46a forming a male screw through both ends in the longitudinal direction; are provided. As a result, the screw rod body 46 is inserted in the condition to penetrate through up to the rear surface, fastening nuts 48 and 48 are screwed to the screw rod body 46 at the installing position of the upper bracket 40a and at the rear surface side respectively, and the screwing positions of the screw rod body by the fastening nuts 48 and 48 are made possible to transfer.

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 motorcycle.

[0002]

2. Description of the Related Art Generally, in a motorcycle, in a steering system for steering the motorcycle, a wheel 12 is attached to a front fork 10 as shown in FIG. By the dynamic operation, the front fork 10 and the wheel 12 can be rotated and steered about the steering shaft portion 14 in a substantially horizontal direction.

The steering shaft portion 14 has a steering head pipe 18 of a frame 16 in which a steering shaft (also referred to as a steering stem) 20 is inserted, as shown in FIG. 6, and the steering shaft 20 has an upper end portion and a lower end portion. Upper bracket 22a
Also, the lower bracket 22b is welded, press-fitted or bolted to sandwich the head pipe 18 from above and below. In FIG. 6, reference numeral 24 is a bearing, 2
6 is a lock nut, 28 is a tightening bolt, and the arrow F indicates the vehicle front direction.

Conventionally, as shown in FIG. 6, the support structure of the handlebar 13 has the upper bracket 22.
Two sets of handlebar holders 30 which are vertically divided and fastened by bolts 30a (only the front side is shown in FIG. 6) are fixed to the upper part of a, and the handlebar holders 30 are divided by the respective divided portions. 13 is sandwiched from above and below and is fixed by tightening the bolt 30a (hereinafter referred to as an assembly type). An assembly type handlebar support structure is disclosed, for example, in Japanese Utility Model Laid-Open No. 2-120297.

Here, the handlebar holder 30 is fixed to the upper bracket 22a by inserting a mounting bolt 32 into a hole (not shown) in a divided portion on the lower side of the handlebar holder 30 and fixing the bolt 32. The dampers 38, 38 are inserted through the holes 34 of the upper bracket 22a, and a nut 36 is screwed to the male screw portion at the tip of the bolt 32 for tightening. Therefore, conventionally, the handlebar holder 30 is always attached to the upper bracket 22a by the bolts 32 and the nuts 36 that pass through the holes 34 under a constant positional condition. In addition to the above-mentioned handlebar holders, there are also handlebar holders integrally molded with the upper bracket itself (hereinafter referred to as a fixed type).

[0006]

Incidentally, in some motorcycles, the driver may be required to adjust the height of the handlebars in order to adjust the riding position to his or her preference. Since it is costly to replace the handbar itself, it is convenient and convenient to perform the height adjustment with the handlebar holder.

Here, in the handlebar support structure for the conventional motorcycle, in order to adjust the height of the handlebar holder, in the assembly type shown in FIG. 6, the upper bracket 22a and the handlebar holder are used. The height is adjusted by pushing in an adjust washer, etc. between 30.
However, there is a problem in that the adjustment washer has a limited range of adjustment, and the handlebar holder needs to be temporarily removed in order to attach the washer and the like, and the adjustment work is troublesome. Moreover, the height of the handlebar holder can be adjusted in this way.
This is only the case of the assembly type in which the handlebar holder can be separated from the upper bracket, and there is a problem in that the handlebar holder must be replaced with the fixed type.

The present invention has been made in order to solve the above-mentioned conventional problems, and makes it possible to adjust the height of the handlebar holder very easily, and at the same time, an automatic adjuster that does not require extra adjuster parts is used. An object of the present invention is to provide a handlebar support structure for a motorcycle.

[0009]

According to a first aspect of the present invention, in order to solve the above-mentioned problems, a steering wheel is provided on a bracket interposed between a steering shaft provided on a frame head pipe of a motorcycle and a front fork. In a handlebar support structure for a motorcycle in which a bar is fixed and supported by a handlebar holder, a bracket having a through hole extending from the handlebar holder attachment point of the bracket to the rear surface of the attachment point, and the bracket of the handlebar holder And a threaded rod body having male threads formed on at least both longitudinal ends integrally projectingly formed on the side end facing each other, and the threaded rod body is inserted into the through hole so as to be pulled out to the back surface, Tightening nuts on the threaded rod body on the mounting location side and the rear surface side of the bracket, respectively. Threadedly engaged, with the structure of the handle bar support structure of a motorcycle being characterized in that to allow displaced screwing position of the threaded rod of the fastening nut.

[0010]

According to the invention of claim 1, in a handlebar support structure for a motorcycle, a bracket having a through hole extending from a mounting position of the handlebar holder of the bracket to a rear surface of the mounting position, and a bracket of the handlebar holder. And a threaded rod body having male threads formed at least at both ends in the longitudinal direction integrally projectingly formed on the side end facing each other, and the threaded rod body is inserted into the through hole in a state of being pulled out to the rear surface of the mounting location. However, it is desirable to screw the fastening nuts onto the screw rod body on the mounting portion side and the rear face side of the bracket, respectively, so that the screwing position of the screw rod body of the fastening nut can be changed. The screwing position of the tightening nut is changed and the tightening nut is tightened toward the bracket. The threaded rod can be fixed to the bracket in a state of being shifted positional relationship desired against. Therefore, since the handlebar holder is formed integrally with the screw rod body, the position of the bracket with respect to the handlebar holder can be selected as desired.

[0011]

Embodiments of the present invention will be described below in detail with reference to the drawings. The same components as those shown in FIG. 5 or 6 are designated by the same reference numerals and the description thereof is omitted. 1 to 4 are explanatory views of a handlebar support structure of a motorcycle according to an embodiment of the present invention, FIG. 1 is a peripheral configuration diagram of a steering system in the motorcycle, and FIG. 2 is an exploded perspective view of the steering system. 3, FIG. 3 is an assembly state diagram, and FIG. 4 is an operation explanation diagram. The configuration around the front steering of the motorcycle is the same as that shown in FIG. 5 except for the upper bracket and the handbar holder, and therefore the same parts are designated by the same reference numerals and the description thereof is omitted.

The motorcycle of the embodiment has an upper bracket 40a and a lower bracket 40b which are interposed between the steering shaft 20 provided on the frame head pipe and the front fork 10 to connect them. The handlebar support structure has a handlebar holder 42 that fixes and supports the steering handlebar 13 on the upper bracket 40a.

A through hole 44 is formed in the upper bracket 40a and extends from a mounting position of the handlebar holder 42 (upper side of the upper bracket 40a in FIG. 1) to a rear surface of the mounting position (lower side of the upper bracket 40a). It is formed. In the embodiment, the through hole 4
The inner peripheral surface of No. 4 is flat. In the present invention, the inner peripheral surface of the through hole may have an appropriate shape other than a flat surface as long as the later-described screw rod body 46 can move back and forth in the axial direction.

At a side end 42a of the handlebar holder 42 facing the upper bracket 40a, a screw rod body 46 is integrally formed with the handlebar holder 42 so as to project therefrom. Both ends of the threaded rod body 46 in the longitudinal direction are threaded portions 46a formed with male threads, and the central portion is a flat portion 46b having a flat peripheral surface. The flat portion 46b allows the screw rod body 46 to smoothly slide in the through hole 44 and easily move in the axial direction. In addition, the threaded rod body of the present invention may be formed with a male screw as a whole. Also,
It is within the scope of the present invention whether the screw rod body 46 is integrally cast / forged with the handlebar holder 42 or fixed by screwing.

In the assembly of the handlebar support structure of the embodiment, the screw rod body 46 is inserted into the through hole 44 so as to be pulled out to the back surface from the side where the screw rod body is attached, and the screw rod body 46 is attached to the upper part. The tightening nut 4 is provided on the mounting portion side and the rear surface side of the bracket 40a, respectively.
8 and 48 are screwed together so that the screwing position of the threaded rod body 46 of the fastening nuts 48 and 48 can be changed.

Therefore, according to the above embodiment, the screwing position of the fastening nuts 48, 48 with respect to the screw rod body 46 is changed from the initial screwing position as desired (FIG. 3).
(In the direction indicated by the arrow), the tightening nuts 48, 48 are tightened toward the upper bracket 40a, so that the positional relationship of the screw rod 46 with respect to the upper bracket 40a is changed as desired. 46 can be fixed to the upper bracket 40a. Further, since the handlebar holder 42 is formed integrally with the screw rod body 46, the position of the upper bracket 40a with respect to the handlebar holder 42 can be selected and adjusted as desired.

A washer or a damper may be interposed between the fastening nuts 48, 48 and the upper bracket 40a. Further, the angle of the central axis of the through hole 44 with respect to the upper bracket 40a can be appropriately selected, and the periphery of the through hole 44 can be configured at an angle corresponding to the handlebar holder 42.

[0018]

As described above, according to the present invention, the height of the handlebar holder can be adjusted very easily, and no extra adjuster parts are required.
It is possible to prevent an increase in the number of parts.

[Brief description of drawings]

FIG. 1 is an explanatory diagram of a peripheral configuration of a steering system for explaining a handlebar support structure of a motorcycle according to an embodiment of the present invention.

FIG. 2 is an exploded perspective view of the steering system shown in FIG.

FIG. 3 is an assembled state view of the handlebar support structure of the motorcycle according to the embodiment of the present invention.

FIG. 4 is an operation explanatory view of the handlebar support structure of the motorcycle according to the embodiment of the present invention.

FIG. 5 is a structural explanatory view of a general steering system of a motorcycle.

FIG. 6 is an exploded perspective view of a steering system for explaining a conventional handlebar support structure.

[Explanation of symbols]

 13 Handle bar 40a Upper bracket 40b Lower bracket 42 Handle bar holder 44 Through hole 46 Screw rod body 46a Screw portion of screw rod body 48/48 Fastening nut

Claims (1)

[Claims] 1. A handlebar support structure for a motorcycle, wherein a steering handlebar is fixed to and supported by a handlebar holder on a bracket interposed between a steering shaft provided on a frame head pipe of the motorcycle and a front fork. In the bracket, a bracket having a through hole extending from the handlebar holder attachment portion of the bracket to the rear surface of the attachment portion, and at least both longitudinal end portions integrally formed at the side end of the handlebar holder facing the bracket. And a threaded rod body formed with a male screw, and the threaded rod body is inserted into the through hole in a state of being pulled out to the back surface, and the threaded rod body is attached to the mounting portion side and the back surface side of the bracket, respectively. Screw the tightening nut and change the screwing position of the screw rod of the tightening nut. A handlebar support structure for motorcycles that has been made possible.