JP3370635B2 - Handle guard mounting structure - Google Patents

Description

Detailed Description of the Invention

[0001]

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

[0002]

2. Description of the Related Art The lever guard of a handle is made of metal to protect the lever, unlike a component whose main purpose is to prevent wind or cold, such as a lever (grip) cover made of a flexible material such as cloth. However, it is a component that is required to maintain rigidity. As a related application,
There is 550 publication.

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

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 in a leftward protruding shape. , The boss portion 5 on the end surface 60a of the tubular nut 60.
7 is brought into contact with the stepped surface 57a and is fastened in the handlebar length direction by the bolt 58.

FIG. 7 shows another example of the mounting structure on the grip end side. On the step surface 57a of the boss portion 57, a collar 61 with a metal collar and a tubular rubber damper 62 are attached to a bolt 58 and a nut 64. Fixed by. The rubber damper 62 is fitted on 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 structure shown in FIGS. 6 and 7 has the following problems. (1) As shown in FIG. 6, the end portion 53b on the grip end side
Has a structure in which the bolts 58 are tightened and fixed in the longitudinal direction of the handlebar, and both end portions 53a and 53b shown in FIG.
Regarding 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 mounting position precision of the bracket 55 with respect to the handlebar 51, and the mounting position precision of the tubular nut 60 of FIG. 6 must be kept within an extremely small error. It takes time to process. Particularly, in the structure in which the bracket 55 is welded to the handlebar 51 as shown in FIG. 5 and the tubular nut 60 in FIG. 6 is also welded to the handlebar 51, it is difficult to finish the above dimension L1 on the handlebar 51 with high accuracy. Is. By the way, if the dimensional error and the mounting position error become large by loosening the above-mentioned dimensional accuracy and mounting position accuracy, the lever guard 53 may have to be bent when the lever guard is installed. And the bolts 56 and 58 are stressed. In addition, the mounting work is troublesome.

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

(3) In the structure shown in FIG. 7, since the end portion 53b on the grip end side is free to move in the length direction of the handlebar, high dimensional accuracy as shown in FIG. Easy to assemble. 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 of the handle rotation shaft core side may become large, and it may be difficult to maintain rigidity. Further, the number of parts for attaching the lever guard such as the rubber damper 62 and the collar 61 increases.

[0009]

It is an object of the present invention to provide a lever guard mounting structure for a handle which can be mounted in a rigid state while maintaining quality while loosening dimensional accuracy and reducing the number of parts. That is.

According to the first aspect of the present invention, the lever guard is arranged in front of the handle grip fixed to the handlebar, and the end portion of the lever guard on the side of the handle rotation axis is provided.
In the lever guard mounting structure of the handle for supporting the end portion on the grip end side on the handlebar, a bracket boss 10 for mounting the end portion 7a of the lever guard 7 on the handle rotation axis side is provided on the handlebar 1 so as to project forward. A collar 11 which is a member different from the bracket boss 10 is disposed between the front end surface of the bracket boss 10 and the end portion 7a of the lever guard 7 on the handle rotation axis side, and the end portion 7a is arranged from the front side. The handle shaft center side end 7a of the lever guard 7 is fixed by the bolt insertion hole 22 and the bolt inserted in the collar 11, and the clamp 15 which can be reduced in diameter is formed at the grip end side end 7b of the lever guard 7. A lever guard mounting structure for a handle, characterized in that the clamp 15 is fitted to the handlebar 1 and is tightened in the radial direction with a bolt. That. As a result, when the lever guard is attached, the dimensional error in the handlebar length direction can be easily absorbed by adjusting the end portion on the grip end side, and the rigidity of the lever guard is improved.

According to a second aspect of the invention, in the lever guard mounting structure for the handle according to the first aspect, the bracket boss 10 and the collar 11 are made of iron.

[0012]

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

The lever guard 7 is made of, for example, an aluminum alloy and is arranged so as to surround the front of the handle grip 3 and the lever 5, and the front and rear direction with respect to the handle grip 3 as it goes to the grip end side (arrow E side). The space is widened, the part on the grip end side bends in a curved shape, and extends rearward to reach the grip end part.

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

FIG. 4 is an enlarged vertical cross-sectional view of the bracket boss 10. A female screw hole 21 is formed at the front end of the bracket boss 10.
Is formed, a bolt insertion hole 22 is formed in the end portion 7a of the lever guard 7, and the bracket boss 10 and the end portion 7a are formed.
The collar 11 is disposed between the collars. 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 are inserted.
The end 7a of the lever guard 7 through the handlebar 1
Is stuck to.

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

FIG. 3 is a sectional view taken along the line III-III in FIG. 2. Although the bolt 20 and the female screw hole 17 are arranged at two positions in the handle bar length direction at intervals in this embodiment. It is also possible to make the bolt diameter a little thicker and attach it with a single bolt. An end cap 23 is fitted on an edge of the handlebar 1 in the lengthwise direction, if necessary.

[0018]

When the lever guard 7 is attached, the clamp 15 shown in FIG. 2 is fitted into the distal end portion of the handlebar 1 in a loosened state, while the end portion 7a on the handle rotation axis side shown in FIG.
Bracket boss 1 through collar 11 with bolt 12
Loosely tighten to 0. That is, the temporarily fixed state is set.

While adjusting the mounting position of the clamp 15 in the handlebar length direction and the position of the end portion 7a, each bolt 1
2 and 20 are tightened to fix the handle rotation shaft core side end 7a and the clamp 15.

With respect to the dimension L1 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 adjusted to the handlebar length. It can be easily absorbed by adjusting the slide direction. Therefore, it is not necessary to mount the grip gart 7 while bending it, the mounting work is not difficult, and the stress applied to the handlebar 1, the lever guard 7, and the bolts 12 and 20 at the time of tightening can be relieved.

When the lever guard 7 is completely attached,
The end portion 7a on the handle shaft axis side is fastened to the bracket boss 10 which is rigidly fixed to the handlebar 1 by welding with a bolt 12 from the front, and the end portion 7b on the grip end side has a diameter of a clamp 15. Since it is fastened by the tightening force in the direction, the end portion 7 on the handle rotation shaft core side is mainly applied to the load or the stress from above or below.
Rotation around the handlebar is prevented by a, and with respect to the load or stress from the front side or the handlebar length direction, the original mounting posture and the original posture due to the support of both end portions 7a and 7b and the rigidity of the lever guard 7 itself. Maintain shape.

Further, since the end portion 7a of the lever guard 7 on the side of the handle rotation axis is fixed via the collar 11 which is a member different from the bracket boss 10, the bracket boss 10 is fixed.
When mounting a component (for example, instrument mounting bracket) arranged in the space X1 closer to the handle rotation axis, the collar 11 can be removed together with the lever guard 7 to facilitate the above-mentioned mounting work. Can be done.

[0023]

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

(2) It is also possible to extend the bracket boss 10 of FIG. 1 further forward and fix the end portion 7a of the lever guard 7 directly to the front end surface of the bracket boss 10 and omit the collar 11. Is.

(3) The present invention is not limited to the handlebars for motorcycles, but is also applicable to the handlebars equipped with a bar-type handlebar, for example, the handlebars of a snowmobile, a four-wheeled vehicle for running on rough terrain, and the like. Is.

[0026]

As described above, according to the present invention, (1) the end portion 7b of the lever guard 7 on the grip end side.
A clamp 15 that can be reduced in diameter is formed on the handlebar 1, and the clamp 15 is fixed to the handlebar 1 by tightening the bolt 20 in the radial direction. Even if there is an error in the mounting position of the bracket boss 10 or the like, it can be easily absorbed by slidingly adjusting the position of the clamp 15 in the handlebar length direction. That is, even if the dimensional accuracy at the time of manufacturing is loosened, it is possible to mount while maintaining quality and rigidity.

(2) Since the clamp 15 is integrally formed on the grip end side end portion 7b of the lever guard 7 and the clamp 15 is directly fastened to the handlebar 1,
The tubular nut or the rubber damper and the mounting parts such as the collar used in the conventional structure of FIG. 6 or 7 are unnecessary, and the number of parts and the processing man-hour can be reduced.

(3) The bracket boss 10 for fixing the end portion 7a of the lever guard 7 on the handle rotation axis side,
If it is welded to the handlebar 1 so as to project forward, it is possible to secure the easiness of the mounting work as described above while increasing the rigidity against a load from above or below. Moreover, as already described in the above paragraph 0021, the end portion 7a on the handle rotation axis side is rigidly fixed to the handlebar 1 by the bracket boss 10.
Further, since it is fastened with the bolt 12 from the front and the end portion 7b on the grip end side is fastened with the radial tightening force of the clamp 15, it is possible to prevent the load or the stress from above or below. The rotation of the handlebar is mainly prevented by the end portion 7a on the side of the handle rotation axis, and both ends 7a and 7b are supported and the lever guard is protected against a load or a stress from the front or the lengthwise direction of the handlebar. The rigidity of 7 itself maintains the original mounting posture and shape. Further, as already described in paragraph 0022, since the end portion 7a of the lever guard 7 on the handle rotation axis side is fixed via the collar 11 which is a member different from the bracket boss 10, the bracket boss 10 is fixed. When mounting a component (for example, instrument mounting bracket) arranged in the space X1 closer to the handle rotation axis, the collar 11 can be removed together with the lever guard 7 to facilitate the above-mentioned mounting work. Can be done.

[Brief description of 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 the clamp portion of FIG.

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

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

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

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

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

[Explanation of symbols]

1 handlebar 3 handle grip 7 Lever guard 7a Handle rotation shaft side end 7b Grip end side end 10 Bracket boss (bracket) 11 colors 12 volt 15 clamps 20 volts

─────────────────────────────────────────────────── ─── Continuation of the front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) B62J 23/00 B62K 11/14

Claims (2)

(57) [Claims] 1. A handle in which a lever guard is arranged in front of a handle grip fixed to a handlebar, and an end of the lever guard on the handle rotation axis side and an end on the grip end side are supported by the handlebar. In the lever guard mounting structure of, remove the end 7a of the lever guard 7 on the handle rotation shaft core side.
Bracket boss 10 for attaching to handlebar 1
The front end surface of the bracket boss 10 and the lever guard 7 are welded to each other by welding in a protruding manner.
The bracket boss between the end 7a of the spindle
A collar 11 which is a member different from the member 10 is disposed, and the bolt insertion hole 22 and the collar 1 of the end portion 7a are arranged from the front.
The handle shaft of the lever guard 7 by the bolt inserted in 1.
The end 7a of the core side and fixed, to form a reduced diameter clamp 15 to grip end side end portion 7b of the lever guard 7, clamped radially by bolts fitted to the clamp 15 on the handlebar 1 The handle has a lever guard mounting structure. 2. The lever guard of the handle according to claim 1.
In the mounting structure, the bracket boss 10 and the collar 11
Is a steel lever guard mounting structure characterized by being made of iron .