JPH0751432Y2 - Handlebar mounting structure for motorcycles - Google Patents

Description

[Detailed Description of the Invention] (Industrial field of application) The present invention is a handlebar mounting structure in which the left and right handleholders are fixed to the upper surface of a fork holder of a motorcycle or the like, and the handlebars are fixed to the respective handle holders. Regarding

(Prior Art) A conventional left-right split type handlebar is, for example, a sixth handlebar.
As shown in the handle holder 51, handlebar 53
A bar fixing bolt 54 coaxial with the side is inserted from the side opposite to the side and screwed to a nut 55 of the handle bar 53.

In such a mounting structure, since the handlebar 53 and the bar fixing bolt 54 are coaxial cores, in order to position the handlebar 53 in the circumferential direction (stop), for example, the handle holder 51 and the handlebar 53 are engaged with each other. Concave and convex to fit
56, 57 must be formed. As a result, the appearance is not good and the processing cost is high.

Further, in order to eliminate the rust or the appearance of the bar fixing bolts 54 exposed to the outside, it is necessary to fit the cap 60 to the bolt heads, resulting in an extra component cost.

As a prior art, there is Japanese Utility Model Laid-Open No. 63-159395.

(Purpose of the Invention) The purpose of the present invention is to reduce the number of parts, reduce the processing cost, prevent rusting of the bar fixing bolt and improve the appearance by installing the bar fixing bolt from below. is there.

(Technical Means for Achieving the Purpose) In order to achieve the above object, according to the present invention, the handle holders are separately fixed to the upper surface of the fork holder for holding the front fork, and the handlebars are fixed to the respective handle holders. In the handlebar mounting structure,
A horizontal bottomed bar insertion hole is formed on the side of the handle holder, a bolt insertion hole that extends upward to the bar insertion hole is formed on the bottom surface of the handle holder, and a vertical female thread is provided inside the handlebar. Section, insert the base end of the handlebar directly into the horizontal bar insertion hole, and screw the bar fixing bolt through the bolt insertion hole from below to the female thread of the handlebar. Is fixed to the handle holder.

(Operation) Insert the handle bar into the bar insertion hole, insert the bar fixing bolt from the bottom surface of the handle holder, and screw it into the internal thread of the handle bar. As a result, the handlebar is fixed to the handle holder and simultaneously positioned in the circumferential direction. The bolt is hidden from the outside by fixing the handle holder to the upper surface of the fork holder.

(Embodiment) FIGS. 1 to 5 show a handlebar mounting structure of a motorcycle to which the present invention is applied. In FIG. 3 showing a left side view of a handle portion, a front end head pipe of a frame 7 is shown. A turning shaft 6 for steering is rotatably supported in 8, and upper and lower fork holders 3 and 4 are fixed to the upper and lower ends of the rotating shaft 6, and both left and right end parts of both fork holders 3 and 4 are fixed. The inner tube 2 of the front fork 1 is held by.

In FIG. 4 showing a plan view, the upper fork holder 3
Left and right handle holders 11 are detachably fixed to the left and right ends of the upper surface of the, and left and right handlebars 13 are attached to each handle holder 11. 15 is a handle grip.

The handlebar mounting structure will be described in detail. In FIG. 5, which is an exploded cross-sectional view, a sideways bottomed bar insertion hole 16 is formed on the side surface of the handleholder 11, and the bottom surface of the handleholder 11 is continuous from the bottom. Inner tube insertion recess 28, bolt head storage counterbore 19 and bolt insertion hole
22 are formed, and the bolt insertion hole 22 is a handlebar 13
Extends upwardly of the road at a right angle to the axis of the bar and opens at the lower end of the bar insertion hole 16. Also, the flange portion 11a of the handle holder 11
A holder fixing bolt insertion hole 17 is formed in this.

The handlebar 13 is formed of a pipe, and a nut (female thread portion) 24 is welded to the inner peripheral surface of the base end portion of the handlebar 13.
25 are formed. The lower end of the female screw hole 25 opens downward through a hole 26 in the lower wall of the handlebar.

The inner tube 2 is inserted into the tube insertion hole 28 so as to project slightly upward from the upper surface of the upper fork holder 3, and is fixed to the fork holder 3 by tightening the dividing surface 30 of the insertion hole 28 with a tightening bolt 29.

In FIG. 1 showing an assembled sectional view, the base end portion of the handle bar 13 is inserted into the bar insertion hole 16 and the bar constant bolt 23 having a hexagonal hole is inserted from the lower surface of the handle holder 11 into the bolt insertion hole 22.
And is screwed into the female screw hole 25 of the handlebar 13. As a result, the handlebar 13 is fixed and positioned in the circumferential direction at the same time.

After fixing the handle bar 13 to the handle holder 11 as described above, the tube insertion recess 19 is fitted on the upper portion of the inner tube 2 to dispose the handle holder 11 on the upper surface of the fork holder 3 and the hexagon socket bolt 12 Is inserted into the bolt insertion hole 17 of the flange portion 11a and screwed into the female screw hole 21 of the fork holder 3 to fix the handle holder 11 to the fork older 3.

As a result, the bolt 23 is completely hidden from the outside. Further, by fitting the recess 19 of the handle holder 11 into the inner tube 2, the mechanical strength against a horizontal or vertical bending load applied to the handle bar 13 is improved.

FIG. 2 is a plan view of the main part, and clarifies the positional relationship between the holder fixing bolt 12 and the inner tube 2, the shape of the dividing surface 30 of the inner tube insertion hole 28, and the like.

(Another embodiment) (1) The handle mounting structure according to the present invention can be applied to a motorcycle.

(2) A solid rod-shaped member may be used as the handlebar, and the female screw hole may be directly formed in the solid rod-shaped handlebar member.

(Effects of the Invention) According to the present invention as described above: (1) Since the sideways handlebar is fixed to the handle holder by the bar fixing bolt that is inserted from below, the handlebar is fixed at the same time as the circle. Positioning (rotation stop) in the circumferential direction can be performed, and it is not necessary to specially form a concave portion or a convex portion for positioning as in the conventional case.

Therefore, the processing cost is reduced and the appearance is improved.

(2) Since the bar fixing bolt is hidden from the outside by inserting the bar constant bolt from the lower surface of the handle holder and arranging the handle holder on the upper surface of the fork holder, the bar fixing bolt can be prevented from rusting. At the same time, the appearance is further improved.

Further, unlike the conventional case shown in FIG. 6, a cap for protecting the bar fixing bolt from the outside is not required, and the cost of parts is reduced.

(3) As a fixing structure of the handle base end portion, a sideways bottomed bar insertion hole 16 is formed on the side surface of the handle holder 11,
Since the base end portion of the handlebar 13 is directly inserted into and fixed to the sideways bar insertion hole 16, the structure is simple, processing is easy, and the rigidity is further improved.

(4) The bolt insertion hole 22 is formed on the lower side of the bar insertion hole 16, and as in the requirement D, a female screw hole 25 is formed in the vertical direction inside the handlebar 13 and is inserted from below. Since the bars 13 are positioned and fixed in the circumferential direction by the bolts 23, the mounting work is simplified and the appearance is further improved.

[Brief description of drawings]

FIG. 1 is a longitudinal sectional view of a handle mounting portion of a motorcycle to which the present invention is applied (I-I sectional view of FIG. 2), and FIG.
Fig. 3 is a plan view of the drawing, Fig. 3 is an overall left side view of the handle portion, Fig. 4 is a plan view of Fig. 3, Fig. 5 is an exploded sectional view of the same portion as Fig. 1, and Fig. 6 is a conventional example. FIG. Three, four ...
… Fork holder, 11 …… Handle holder, 13 ……
Handlebar, 16 …… bar insertion hole, 22 …… bolt insertion hole, 23 …… bar fixing bolt, 24,25 …… nut, female screw hole (female screw part)

Claims (1)

[Scope of utility model registration request] 1. A handlebar mounting structure in which handlebars are separately fixed to the upper surface of a fork holder for holding a front fork, and the handlebars are fixed to the respective handleholders. A bar insertion hole is formed, a bolt insertion hole that extends upward to the bar insertion hole is formed on the lower surface of the handle holder, and a vertical female thread is formed inside the handle bar. The handlebar is fixed to the handle holder by inserting the part directly into the horizontal bar insertion hole and screwing the bar fixing bolt from below into the female thread part of the handlebar through the bolt insertion hole. Handlebar mounting structure for motorcycles.