JP2001239975A - Handle guard mounting structure - Google Patents

Abstract

(57) [Problem] To provide a lever guard mounting structure that can be mounted while maintaining quality and rigidity while relaxing dimensional accuracy at the time of manufacturing processing. SOLUTION: A lever guard 7 is disposed so as to surround the front of a handle grip 3 and an operation lever 5, and an end 7b on the grip end side of the lever guard 7 and an end 7a on the handle rotation axis center side of the handle are handled. Supported on bar 1. The end portion 7a on the handle shaft axis side is fixed to a front end portion of a bracket boss 10 which is welded to the handle bar 1 so as to project forward, for example, by a bolt 12 from the front. A clamp 15 whose diameter can be reduced is formed at the end 7 b on the grip end side, and the clamp 15 is fitted to the handlebar 1 and fastened in the radial direction by bolts 20.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for mounting a lever guard provided on a handlebar of a motorcycle or the like.

[0002]

2. Description of the Related Art Unlike a lever (grip) cover made of a flexible member such as cloth, a lever guard of a handle is formed of metal to protect the lever, unlike a component mainly intended for wind protection or cold protection. However, it is a component required to maintain rigidity. As a related application, actual fairness 7-16
There is 550 publication.

FIG. 5 shows an example of a conventional lever guard mounting structure. A lever guard 53 is disposed so as to surround the front of a handle grip 52 and an operation lever 54.
An end 53a of the lever guard 53 on the handle rotation axis side (arrow C side) is fastened to a front end of a forwardly protruding bracket 55 welded to the handlebar 51 by a bolt 56 inserted from the front. I have. A fixing boss 57 is formed integrally with the end 53b on the grip end side (arrow E side), and a bolt 58 inserted from the left (or right) side
Is fixed to the handlebar 51.

FIG. 6 shows the details of the mounting structure on the grip end side. On the inner peripheral surface of the handlebar 51, a metallic cylindrical nut 60 is welded or press-fitted and fixed to the left. The boss 5 is provided on the end face 60a of the cylindrical nut 60.
7 is abutted against the stepped surface 57a and is fastened by the bolt 58 in the length direction of the handlebar.

FIG. 7 shows another example of a mounting structure on the grip end side. A metal collar 61 and a cylindrical rubber damper 62 are provided on a stepped surface 57a of a boss portion 57 with a bolt 58 and a nut 64. It is fixed by. The rubber damper 62 is fitted to the inner peripheral surface of the handlebar 51 so as to be movable in the handlebar length direction against a certain friction.

[0006]

The mounting structures shown in FIGS. 6 and 7 have the following problems. (1) As shown in FIG. 6, the end 53b on the grip end side
Are fixed in the length direction of the handlebar by bolts 58, and both ends 53a, 53b shown in FIG.
For the dimension L1 between them, high precision is required in the manufacturing process. That is, the precision of the dimension L1 of the lever guard 53 itself, the precision of the mounting position of the bracket 55 with respect to the handlebar 51, and the precision of the mounting position of the cylindrical nut 60 in FIG. 6 must be kept within extremely small errors. It takes time to process. In particular, in the structure in which the bracket 55 is welded to the handlebar 51 as shown in FIG. 5 and the cylindrical nut 60 in FIG. 6 is also welded to the handlebar 51, it is difficult to finish the dimension L1 on the handlebar 51 with high accuracy. It is. Incidentally, if the dimensional accuracy and the mounting position error are increased by loosening the dimensional accuracy and the mounting position accuracy, the lever guard 53 may have to be bent when the lever guard is mounted. And the bolts 56 and 58 are stressed. In addition, installation work is troublesome.

(2) In the mounting structure of FIG. 6, a cylindrical nut 60 is required for mounting the lever guard, and the cylindrical nut 60 must be welded or press-fitted and fixed. And the number of processing steps.

(3) In the structure shown in FIG. 7, since the end 53b on the grip end side is freely movable in the length direction of the handlebar, high dimensional accuracy as shown in FIG. 6 is not required. Assembly becomes easy. However,
Depending on the load applied to the lever guard 53 or the direction of the load, the load applied to the end portion 53a on the handle shaft axis side may increase, and it may be difficult to maintain rigidity. Also, the number of parts for mounting the lever guard such as the rubber damper 62 and the collar 61 increases.

[0009]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a handlebar lever guard mounting structure which can be mounted in a rigid state while maintaining quality while loosing dimensional accuracy and reducing the number of parts. That is.

[0010]

According to the first aspect of the present invention, a lever guard is provided in front of a handle grip fixed to a handlebar, and an end of the lever guard on the handle rotation axis side and a grip are provided. In the lever guard mounting structure of the handle which supports the end on the handlebar with the end on the end side, the end of the lever guard on the handle rotation axis side is fixed to the handlebar, and the diameter of the lever guard is reduced at the end on the grip end side. It is characterized in that a possible clamp is formed, which is fitted on the handlebar and is radially tightened with bolts. Thus, when the lever guard is mounted, a dimensional error in the handlebar length direction can be easily absorbed by adjusting the end on the grip end side.

According to a second aspect of the present invention, in the handlebar lever mounting structure of the first aspect, a bracket for mounting an end of the lever guard on the handle rotation axis side is welded to the handlebar so as to protrude forward. Further, the end of the lever guard on the handle rotation axis side is fixed to the front end of the bracket by a bolt from the front. Thereby, the rigidity of the lever guard is improved.

[0012]

FIG. 1 is an enlarged perspective view of a left side portion of a motorcycle handle to which the present invention is applied. A left and right portion of a handle bar 1 is reinforced and connected by an auxiliary stay 2, and a reinforced stay 2 is provided. A handle grip 3 and a lever (such as a clutch lever) 5 are attached to a portion of the handlebar 1 on the tip side (arrow E side) from the fixed end 2a of the handlebar.

The lever guard 7 is made of, for example, an aluminum alloy and is disposed so as to surround the front of the handle grip 3 and the lever 5. The gap is widened, the curved portion is bent at a portion on the grip end side, and extends rearward to reach the grip end portion.

An iron bracket boss 10 projecting forward is welded to a portion of the handlebar 1 near the fixed end 2a of the reinforcing stay 2 and on the handle rotation axis side, and a front end of the bracket boss 10 is provided. The end 7a of the lever guard 7 on the handle rotation axis side is fixed to the surface with a bolt 12 via an iron collar 11.

FIG. 4 is an enlarged longitudinal sectional view of the bracket boss 10, and a female screw hole 21 is formed at the front end of the bracket boss 10.
A bolt insertion hole 22 is formed in the end 7a of the lever guard 7, and the bracket boss 10 and the end 7a are formed.
The collar 11 is arranged between the two. The bolt 12
Is inserted into the bolt insertion hole 22 and the collar 11 from the front, and is screwed into the female screw hole 21 of the bracket boss 10, whereby the collar 11 and the bracket boss 10
Of the lever guard 7 through the handlebar 1
It is stuck to.

FIG. 2 shows a mounting structure of the end 7b of the lever guard 7 on the grip end side. In FIG. 2, a clamp 15 is formed integrally with the end portion 7b by, for example, aluminum extrusion. The clamp 15 is formed in a cylindrical shape, and is formed to have a split groove 19 at a lower end so as to be reduced in diameter. ing. Tightening projections 15a and 15b projecting downward are formed on both front and rear sides of the split groove 19, a female screw hole 17 is formed in the front fastening projection 15a, and a bolt insertion hole 18 is formed in the rear fastening projection 15b. Are formed. The clamp 15 is fitted to the outer periphery of the handlebar 1, the bolt 20 inserted through the bolt insertion hole 18 is screwed into the female screw hole 17, and the projections 15a and 15b are tightened. It is fixed to the handlebar 1 only by the tightening force in the direction.

FIG. 3 is a cross-sectional view taken along the line III-III of FIG. 2. In this embodiment, the bolt 20 and the female screw hole 17 are arranged at two places at an interval in the handlebar length direction. It is also possible to make the bolt diameter slightly larger and mount it with one bolt. An end cap 23 is fitted to the longitudinal edge of the handlebar 1 as necessary.

[0018]

When the lever guard 7 is mounted, the clamp 15 shown in FIG. 2 is loosely fitted to the tip of the handlebar 1 while the end 7a on the handle shaft axis side shown in FIG.
Bracket boss 1 via collar 11 with bolt 12
Loosely tighten to zero. That is, the state is temporarily fixed.

While adjusting the mounting position of the clamp 15 in the handlebar length direction and the position of the end 7a, each bolt 1
Then, the end 7a and the clamp 15 on the handle rotation axis side are fixed.

Regarding the dimension L1 shown in FIG. 1, even if there is a slight error in the mounting position (welding position) of the bracket boss 10 or the dimension L1 of the lever guard 7 itself during manufacturing and processing, the clamp 15 is required to have a handlebar length. It can be easily absorbed by adjusting the slide in the direction. Therefore, it is not necessary to attach the grip gart 7 while flexing it, and the attaching work does not become difficult, and the stress applied to the handle bar 1, the lever guard 7, and the bolts 12 and 20 at the time of tightening can be reduced.

In the state where the mounting of the lever guard 7 is completed,
The end 7a on the handle rotation axis center side is fastened to a bracket boss 10 rigidly fixed to the handle bar 1 by welding with a bolt 12 from the front. Direction, the load or stress from above or below is mainly applied to the end 7 on the handle shaft axis side.
a prevents the handlebar from rotating around the handlebar, and with respect to the load or stress from the front or from the handlebar length direction, the support position of both ends 7a and 7b and the rigidity of the lever guard 7 itself make the initial mounting posture and Maintain shape.

Further, since the end 7a of the lever guard 7 on the handle rotation axis side is fixed via a collar 11 which is a separate member from the bracket boss 10, the bracket boss 10
When attaching a component (for example, a bracket for mounting instruments, etc.) arranged in the space portion X1 on the handle rotation axis side, the collar 11 can be removed together with the lever guard 7, so that the above attaching work can be performed smoothly. Can be done.

[0023]

Other Embodiments of the Invention (1) The clamp 15 may be welded to the lever guard 7.

(2) The bracket boss 10 shown in FIG. 1 can be further extended forward, and the end 7a of the lever guard 7 can be directly fixed to the front end face of the bracket boss 10, so that the collar 11 can be omitted. It is.

(3) The present invention is not limited to a motorcycle handle, but is also applicable to a vehicle having a bar-type handle, for example, a handle of a snowmobile, a four-wheel vehicle for running on uneven terrain, and the like. It is.

[0026]

As described above, according to the present invention, (1) the end 7b on the grip end side of the lever guard 7
In addition, a clamp 15 that can be reduced in diameter is formed, and is fixed to the handlebar 1 by tightening in the radial direction with a bolt 20. Therefore, when the lever guard is attached, the dimensions of the lever guard 7 itself or on the handlebar 1 are set. Even if there is an error in the mounting position of the bracket boss 10 or the like, the position of the clamp 15 can be easily absorbed by sliding and adjusting the position in the handlebar length direction. That is, even if the dimensional accuracy at the time of the manufacturing process is loosened, the mounting can be performed while maintaining the quality and rigidity.

(2) Since the clamp 15 is formed integrally with the end 7b on the grip end side of the lever guard 7 and the clamp 15 is directly fastened to the handlebar 1,
Mounting parts such as a cylindrical nut or a rubber damper and a collar used in the conventional structure shown in FIG. 6 or 7 are not required, and the number of parts and the number of processing steps can be reduced.

(3) As in the second aspect of the present invention, the bracket boss 10 for fixing the end 7a of the lever guard 7 on the handle rotation axis side is welded to the handlebar 1 so as to protrude forward. With such a configuration, the above-described easiness of the mounting operation can be ensured while increasing the load from above or below or the rigidity against the load.

[Brief description of the drawings]

FIG. 1 is a partial perspective view of a motorcycle handle to which the present invention is applied.

FIG. 2 is an enlarged view of a clamp portion in FIG.

FIG. 3 is a sectional view taken along the line III-III in FIG. 2;

FIG. 4 is a longitudinal sectional view of the bracket boss of FIG. 1;

FIG. 5 is a partial perspective view of a conventional motorcycle handle.

6 is a longitudinal sectional view of a grip end portion of FIG.

FIG. 7 is a longitudinal sectional view of another conventional grip end portion.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Handle bar 3 Handle grip 7 Lever guard 7a End of handle rotation axis side 7b End of grip end side 10 Bracket boss (bracket) 11 Collar 12 Bolt 15 Clamp 20 Bolt

Claims (2)

[Claims] 1. A handle for disposing a lever guard in front of a handle grip fixed to a handlebar, and supporting an end of the lever guard on the handle rotation axis side and an end of the lever end on the handlebar on the handlebar. In the lever guard mounting structure, the end of the lever guard on the handle rotation axis side is fixed to the handlebar, and a clamp capable of reducing the diameter is formed at the end of the lever guard on the grip end side, and the clamp is attached to the handlebar. A lever guard mounting structure for a handle, which is fitted and bolted in a radial direction with a bolt. 2. A handlebar lever mounting structure according to claim 1, wherein a bracket for mounting an end of the lever guard on the handle rotation axis side is welded to the handlebar in a forwardly projecting manner, and a front end of the bracket is provided. A lever guard mounting structure for a handle, wherein an end of the lever guard on the handle rotation axis side is fixed to a portion by a bolt from the front.