JPH0417435Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a stabilizer for a front fork of a motorcycle, etc., which is passed between the stabilizer mounting parts provided at the upper part of a pair of left and right bottom cases, and is screwed to each of the mounting parts. It is something.

The structure of the front fork stabilizer will be briefly explained. A front fork essentially consists of a pair of left and right bottom cases, and a pair of left and right fork pipes that fit into each of them. The fork pipe is fixed above it by an upper bracket and an under bracket. The bottom case is attached to the axle at the bottom, and the bottom case is held together by a stabilizer at the top. This type of front fork stabilizer is known in the art, as can be seen from, for example, Japanese Utility Model Application No. 58-41689.

However, in this type of well-known front fork, the fork pipe is fixed by passing through the holes in the upper bracket and under bracket, but the dimensions of these holes vary due to manufacturing technology. are not completely parallel; in extreme cases, they are shaped like the letter "Ha" or an inverted "Ha".
It is shaped like the letter .

In this state, the front fork is compressed and the fork pipe is pushed into the bottom case.
Stress is applied to the stabilizer, but because it is firmly fixed with bolts, the fork pipe will not go straight into the bottom case, which will significantly impair the operability of the front fork.

An object of the present invention is to provide a stabilizer that eliminates the above-mentioned drawbacks and avoids deterioration in operability due to variations in parts.

According to the present invention, a hole is provided at the end of the stabilizer, and a ring-shaped collar having a height slightly higher than the thickness of the end is inserted intermediately into the hole, so that the stabilizer can be secured by bolts. When the stabilizer is fixed to the stabilizer mounting part via the ring-shaped collar, the size of the hole in the stabilizer is set to a size that prevents the stabilizer from separating from the stabilizer mounting part, and in this case, at least the length of the hole in the longitudinal direction of the stabilizer is is somewhat longer than the diameter of the ring-shaped collar.

If the stabilizer is configured in this way, it will be able to move to some extent only in the horizontal direction, thus avoiding deterioration in operability due to variations in parts.

Embodiments of the present invention will be described in detail below based on the drawings.

FIG. 1 shows a schematic diagram of the front fork 10, which essentially consists of a pair of left and right bottom cases 11 and a pair of left and right fork pipes that fit into each of them to generate damping force. It consists of 12. The fork pipe 12 is fixed above it by an upper bracket 13 and an under bracket 14 so as to be left and right parallel to each other, and the bottom case 11 is locked to an axle 15 at its lower part. In order to reduce the overall weight of the front fork and increase its rigidity, stabilizer mounting parts 16 are provided on opposite sides of the upper part of the bottom case 11, and a stabilizer 17 is passed between them to securely tighten the bolts. A stop has been made.

In Figures 2 and 3, the bottom case 11
An end portion 18 of the stabilizer 17 is placed on the stabilizer mounting portion 16 of the stabilizer 17, and an elongated hole 19 extending in the longitudinal direction of the stabilizer 17 is provided in the end portion.

A ring-shaped collar 23 whose height is slightly higher than the plate thickness of the end portion 18 is inserted into this elongated hole 19, and its outer diameter is the same as the short axis of the elongated hole 19, that is, the longitudinal direction of the stabilizer. corresponds to the width in the perpendicular direction.

A bolt 26 is screwed into a female threaded hole 27 provided in the mounting portion 16 via a flat washer 25 that is in contact with the upper surface of the collar 23 . The inner diameter of the collar 23 is only slightly larger than the outer diameter of the bolt 26, so that there is almost no gap.

Due to the structure described above, the stabilizer 17 can be moved slightly in the horizontal direction and also in its longitudinal direction. Although the height of the ring-shaped collar 23 is exaggerated in the figure, the difference between the height and the thickness of the stabilizer short section 18 is very small, so the vertical movement of the stabilizer 17 can be ignored. be.

FIGS. 4 and 5 show an alternative embodiment to that of FIGS. 2 and 3, although identical parts are given the same reference numerals.

In this second embodiment, a circular hole 20 is provided which is somewhat larger than the outer diameter of the ring-shaped collar 23 of the stabilizer end 18, and its space is filled with a rubber bushing 24 as an elastic bushing. The height of this rubber bushing 24 is the same as that of the collar 2.
It is equal to or lower than the height of 3. Although this configuration allows the stabilizer to move in any horizontal direction, the vertical movement is still negligible.

As mentioned above, in both the first and second embodiments, since the stabilizer 17 passed between the bottom case 11 can move somewhat in the horizontal direction, the hole dimensions of the upper bracket 13 and the under bracket 14 that fasten the fork pipe 12 are Even if the left and right fork pipes 12 are not completely parallel due to variations, they will absorb the side force when the front fork moves from the extended position to the depressed position. Therefore, there is no need to adversely affect the operation of the front fork, and the rigidity is maintained.

[Brief explanation of drawings]

FIG. 1 shows an overall schematic diagram of the front fork, FIG. 2 is a cross-sectional view of the main part of the first embodiment according to the present invention, and FIG. 3 is taken along A-A in FIG.
FIG. 4 is a sectional view of a main part of the second embodiment, and FIG. 5 is a sectional view taken along line BB in FIG. 4. Reference numbers in the figure, 16... Stabilizer mounting part, 17... Stabilizer, 18... End, 1
9, 20... Hole, 23... Ring-shaped collar, 24
...Elastic bushing, 25...Flat washer, 26...Bolt.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) In a stabilizer for a front fork of a motorcycle, etc., which is passed between the stabilizer attachment parts provided at the upper part of a pair of left and right bottom cases, and is screwed to each said attachment part. , a hole 19 or 2 in the end 18 of the stabilizer 17
0, and a ring-shaped collar 23 whose height is slightly higher than the thickness of the end portion 18 is inserted into the hole 19 or 2.
0 and the stabilizer 17 is fixed to the stabilizer attachment part 16 by the bolt 26 via the ring-shaped collar 23, the size of the hole 19 or 20 of the stabilizer is such that the stabilizer 17 is fixed to the stabilizer attachment part 16 by the bolt 26 through the ring-shaped collar 23. The stabilizer is sized so that it does not separate from the stabilizer, and at least the length of the hole 19 or 20 in the longitudinal direction of the stabilizer is somewhat longer than the diameter of the ring-shaped collar 23. (2) The hole is a long hole 19, and the long hole 1
Utility model registration claim 1, characterized in that 9 is approximately equal to the diameter of the ring-shaped collar 23 in the direction perpendicular to the longitudinal direction of the stabilizer.
Stabilizers as described in section. (3) The hole is formed as a circular hole 20 somewhat larger than the diameter of the ring-shaped collar 23, and an elastic bushing 24 such as rubber is inserted between the outer diameter of the collar 23 and the circular hole 20. The stabilizer according to claim 1 of the utility model registration claim. (4) According to one of the claims 1 to 3 of the utility model registration claim, wherein the ring-shaped collar 23 is screwed through a flat washer 25 that comes into contact with the upper surface of the ring-shaped collar 23. Stabilizer listed.