JPH0544238Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention relates to an improvement of a rear wheel hydraulic shock absorber for a two-wheeled vehicle in which the distance between the upper and lower mounting parts of the hydraulic shock absorber, that is, the installation length, can be changed as appropriate. .

[Conventional technology]

As this type of hydraulic shock absorber, for example,
As seen in Utility Model Application Publication No. 46482 published in 1985 and Patent Application Publication No. 94808 published in 1985, the mounting part of the hydraulic shock absorber is connected to the main body side support part and the mounting bracket, and to the main body side support part and the mounting bracket. The main body side supporting part and the mounting bracket are screwed together with screws in different directions. are connected to each other by a screw member, and by rotating the screw member, the mounting bracket and the main body side support part, which are screwed together with screws in different directions, are moved toward or away from each other. A device in which the installation length of the device is changed is already known.

[Problem that the invention attempts to solve]

However, in these conventional hydraulic shock absorber mounting length changing structures, the mounting bracket and the main body side support part are simply connected to the threaded member with screws in different directions independently, which makes it difficult to attach to the motorcycle. For example, when assembling a hydraulic shock absorber,
Even if you restrict the rotation of only the main body side of the hydraulic shock absorber that is integrated with the main body side support part and rotate the screw member, and change the installation length of the hydraulic shock absorber to match the mounting part of the motorcycle, the rotation of this screw member As a result, the mounting brackets rotate together, and not only does the mounting direction of the mounting bracket become incorrect, but also screwing forward and backward occurs only between the main body side support part and the screw member, and there is no screw thread between the screw member and the mounting bracket. Since the screw is not screwed in and out at all, the adjustment range of the installation length becomes narrower accordingly. Therefore, when assembling a hydraulic shock absorber to a motorcycle, it is necessary to change the installation length of the hydraulic shock absorber by rotating the screw member while regulating the rotation of both the mounting bracket and the main body support part. The disadvantage is that it is difficult to assemble.

Furthermore, even if the installation length of the hydraulic shock absorber is changed while the rotation of both the mounting bracket and the main body support part is restricted, the mounting length of the mounting bracket and the main body support part cannot be extended with respect to the threaded member. Since there are no restrictions on the direction, the screw member may come off the mounting bracket or the main body support part due to excessive adjustment, or even if it does not go that far, the mounting bracket and screw may A situation arises in which the minimum engagement length necessary for strength is not secured in the screw connection between the members and between the main body support part and the screw member,
There are disadvantages such as the possibility that the device may be used in such a dangerous condition.

Therefore, the purpose of the present invention is to change the mounting length of a hydraulic shock absorber by simply pressing either the mounting bracket or the support on the main body side without rotating the other, and at the same time. To provide a rear wheel side hydraulic shock absorber for a two-wheeled vehicle equipped with an installation length changing structure capable of preventing overextension.

[Means for solving problems]

In order to achieve the above object, in the present invention, the mounting part of the hydraulic shock absorber is divided into a main body support part, a mounting bracket, and a screw member interposed between the main body support part and the mounting bracket. configured,
In addition, the rear wheel hydraulic pressure of a two-wheeled vehicle in which the main body side support part and the screw member, and the screw member and the mounting bracket are screwed together with screws in different directions, and these main body side support part and the mounting bracket are connected to each other by the screw member. In a shock absorber, a guide pin extending in the axial direction eccentrically from the axis is provided on either the mounting bracket or the main body support part, and a guide hole into which the guide pin is inserted is placed eccentrically from the axis on the other side. In addition, a stopper was provided between the guide pin and the guide hole to limit the maximum installation length.

[Effect]

As a result, displacement in the rotational direction of the mounting bracket and the main body side support part is always regulated by the guide pin and guide hole that are provided eccentrically from their respective axes and fit into each other, making it easy to install the hydraulic shock absorber. When changing the length, by simply holding down either the mounting bracket or the main body support part, for example, the hydraulic shock absorber body that is integrated with the main body support part, the mounting bracket can be installed without rotating together with the rotation of the screw member. You can change the length. Therefore, there is no possibility that the mounting direction of the mounting bracket will be misaligned or that it will be difficult to change the mounting length.

In addition, the stopper provided between the guide pin and the guide hole prevents overextension during the installation length change operation, and not only prevents the screw member from coming off from the mounting bracket or the support part on the main body side. It also guarantees the minimum required engagement lengths between the mounting bracket and the threaded member and between the main body support portion and the threaded member.

〔Example〕

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

FIG. 1 shows an embodiment of the present invention, in which a mounting portion 2 attached to a hydraulic shock absorber body 1 is divided into a mounting bracket 3 at the tip and a support portion 4 on the main body side. The main body side support part 4 has a cylindrical shape as a whole, has a female thread 5 (for example, a right-hand thread) carved on the inner peripheral surface, and has a guide pin 6 extending in the axial direction at a position eccentric from the axial center. Further, the mounting bracket 3 has an outer diameter on the connection side that is connected to the main body side support part 4.
A male thread 7 (for example, a left-hand thread) in the opposite direction to the female thread 5 on the inner surface of the main body side support part 4 is carved on the outer circumferential surface thereof, and a guide hole 8 corresponding to the guide pin 6 is formed. Drill in an eccentric position.

Between the mounting bracket 3 and the main body side support part 4, there is a male thread 10 on the outer peripheral surface that engages with the female thread 5 on the inner surface of the main body side support part 4, and a male thread 10 on the inner peripheral surface that engages with the male thread 7 of the mounting bracket 3. Adjustment bolts 9, each of which is a screw member for adjustment, each having a female thread 11 carved therein.
, the male thread 10 of the adjustment bolt 9 is engaged with the female thread 5 of the main body support part 4, and the female thread 11 of the adjustment bolt 9 is engaged with the male thread 7 of the mounting bracket 3, and the adjustment bolt 9 is rotated to the right or left. By rotating the main body side support part 4 and the mounting bracket 3, the guide pin 6 and the guide hole 8 guide the main body side support part 4 and the mounting bracket 3 toward and away from each other.

Numerals 12 and 13 are lock nuts that lock the adjustment bolt 9 when the length has been adjusted, and 14 is a stopper that prevents the guide pin 6 from coming out of the guide hole 8.

The adjustment bolt 9 has an outer screw 10 that engages with the main body side support part 4 and an inner screw 11 that engages with the mounting bracket 3, which are reversed on the right and left, so loosen the lock nuts 12 and 13 and tighten the adjustment bolt. 9,
For example, when the hydraulic shock absorber main body 1 is rotated to the right while restricting its rotation, the mounting bracket 3 moves in the direction approaching the main body side support part 4 while being guided by the guide pin 6 and the guide hole 8, and the mounting bracket 3
and the main body side support part 4 can be approached at twice the speed. At this time, since the guide pin 6 and the guide hole 8 are both located at positions offset from the axes of the main body side support part 4 and the mounting bracket 3, relative rotation between the main body side support part 4 and the mounting bracket 3 is prevented. can.

When the adjustment bolt 9 is rotated to the left, the main body support part 4 and the mounting bracket 3 can be moved away from each other from the close position. Since there is a stopper 14 in the guide hole 8, the head of the guide pin 6 hits the stopper 14 at the final extended position, so the guide pin 6 will not come out of the guide hole 8.
It also guarantees the minimum required engagement length between the mounting bracket and the threaded member and between the main body support portion and the threaded member.

Next, FIG. 2 shows another embodiment of the present invention, in which the main body side support part 4 and the mounting bolt are connected by an adjustment bolt 9 having threads on the inner and outer peripheral surfaces in the above embodiment. Instead, they are connected by a turnbuckle type adjustment nut 15. That is, the outer diameter of the main body side support part 4 and the outer diameter of the connecting side of the mounting bracket 8 are made the same, and different right or left screws 16 and 7 are provided on each outer peripheral surface, and the inner surface on one end side and the inner surface on the other end side are provided. An adjusting nut 15 provided with different right or left screws 17 and 18 is screwed onto the main body side support part 4 and the mounting bracket 3 so that the screws 17 and 16 and the screws 18 and 7 mesh with each other. The other configurations are the same as in the first embodiment.

In this embodiment, by rotating the adjustment nut 15 to the right or to the left, the main body side support part 4 and the mounting bracket 3 can be moved closer to or separated from each other, and the entire length of the mounting part 2 can be freely adjusted. be able to. Further, in this case, the guide pin 6 and the guide hole 8 function in the same manner as in the first embodiment.

Note that the direction of each screw and the relationship between the guide pin 6 and the guide hole 8 may be reversed to that described.

[Effect of idea]

As described above, the present invention has the following effects.

1. Since a guide pin and a guide hole are provided between the mounting bracket and the main body support part, which fit into each other eccentrically from the axis, when changing the installation length of the hydraulic shock absorber, both the hydraulic shock absorber main body and the mounting bracket By turning the screw member while restricting the rotation of one side at the same time, the screw member can be rotated without the other rotating, that is, without changing the orientation of the mounting part. In contrast, the hydraulic shock absorber main body and the mounting bracket are displaced in the axial direction while being screwed forward and backward at the same time, making it extremely easy to attach the shock absorber to a two-wheeled vehicle.

2. Also, the stopper provided between the guide pin and the guide hole prevents the screw member from being overextended when changing the mounting length, so it is possible to prevent the screw member from coming off from the mounting bracket or the support part on the main body side. In addition, it is possible to ensure the respective minimum required engagement lengths between the mounting bracket and the threaded member and between the main body side support portion and the threaded member.

[Brief explanation of the drawing]

Both FIGS. 1 and 2 are sectional views of essential parts showing an embodiment of the present invention. 2...Mounting part, 3...Mounting bracket, 4...
Main body side support part, 5, 7, 10, 11, 16, 1
7, 18...screw, 6...guide pin, 8...guide hole, 9...adjustment bolt (screw member), 14...
...stopper, 15...adjustment nut (screw member).

Claims (1)

[Scope of utility model registration request] The mounting portion of the hydraulic shock absorber is divided into a main body side support portion, a mounting bracket, and a screw member interposed between the main body side support portion and the mounting bracket, and the main body side support portion, the screw member, and the screw member are configured separately. In a rear wheel hydraulic shock absorber for a two-wheeled vehicle, the mounting bracket and the mounting bracket are screwed together with screws in different directions, and the main body support part and the mounting bracket are interconnected by a screw member. A guide pin extending in the axial direction eccentrically from the axis is provided on one of the two, and a guide hole into which the guide pin is inserted is provided on the other side, also eccentrically from the axis, and a maximum distance between the guide pin and the guide hole is provided. A hydraulic shock absorber for a rear wheel of a two-wheeled vehicle, characterized in that a stopper is provided to limit the installation length.