JPS6311166B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a structure for connecting a shock absorber and a body used in an automobile suspension system.

With the conventional shock absorber and body fastening structure, the shock absorber rod rotates due to vibrations and impacts during driving, so when the actuator is attached to the head of the rod using a damping force adjustable shock absorber, etc. If the wires were simply wired without taking any special measures, the lead wire coming out of the actuator would wind around the actuator, be pulled, and eventually break. If the lead wire is cut, the actuator will lose its function, making it impossible to adjust the damping force, making it impossible to achieve its original purpose.

The present invention is intended to solve the above-mentioned conventional disadvantages, and the rod of the shock absorber does not rotate relative to the body at the joint between the shock absorber and the body, or it rotates to a certain extent but is stopped from rotating further. As a result, the actuator attached to the head of the rod, such as a shock absorber with adjustable damping force, will no longer rotate relative to the body, which may cause the lead wire connected to the actuator to wrap around or break. This ensures sufficient reliability of the damping force adjustment mechanism.

In the fastening structure of the present invention, an upper cushion retainer is arranged above a body so as not to rotate more than a predetermined amount with respect to the body, and a lower cushion retainer is fitted to a stepped portion of a shock absorber rod below the body. A cushion is provided between the upper cushion retainer and the actuator bracket above it, and between the lower surface of the body and the lower cushion retainer, and each shock of the actuator bracket and the lower cushion retainer is By making the absorber rod insertion hole into an irregularly shaped hole, and by making the cross-sectional shape of the shock absorber rod in the insertion hole portion into an irregular shape in correspondence with the insertion hole, the shock absorber can be adjusted to a predetermined (permissible) position with respect to the body. It is characterized in that it does not rotate by more than a rotation angle (rotation angle).

Therefore, the upper cushion and the lower cushion each have a larger tightening allowance than the other cushion when the vehicle bounces and rebounds.

In the present invention, in order to arrange the upper cushion retainer so that it does not rotate with respect to the body, as will be explained in detail in the following embodiments, the retainer may be provided with a pawl plate that engages with the body at two places, or the retainer may be may be directly fixed to the body with bolts, or furthermore, a retainer may be engaged with the cover to stop rotation.

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a sectional view showing the fastening structure of the present invention, and FIGS. 2 to 4 show a first embodiment.

In the first embodiment, as an upper cushion retainer 1 located above a body 8, claw plates 1a are provided at two locations as shown in FIGS. This is an example using a device configured to rotate to a certain extent with respect to the body 8. In the present invention, as shown in FIG. Side cushions 7 are provided, and the shock absorber rods are inserted through holes provided in the upper and lower cushions, the body, and the upper and lower cushion retainers. In addition, 1 in the figure
3 indicates nuts.

In the present invention, while the vehicle is running, due to bounce-rebound, either the upper or lower cushion of the body 8 has a larger tightening interference than the other cushion, as shown in FIGS. 5 and 6. This takes advantage of the fact that the coefficient of friction between the retainer and the body increases. When the vehicle is on the rebound side, since the upper cushion retainer 1 has the above-described shape, it stops rotating at a certain angle with respect to the body 8, as shown in FIGS. 2 and 3. At this time, the upper cushion retainer 1, the upper cushion 2, and the actuator bracket 3 are held together by large friction, as shown in FIG. 5, because the tightening allowance of the cushion 2 is large. The actuator bracket 3 is provided with an irregularly shaped insertion hole having two sides as shown in Fig. 4, and a shock absorber rod 4 having a corresponding cross-sectional shape is inserted into this insertion hole. Therefore, the rod 4
is prevented from rotating. Therefore, the actuator 11 and the shock absorber rod remain integrally connected to the body 8, and the lead wire 12 is neither wrapped around nor pulled around the actuator.

On the bound side, the lower cushion retainer 5 is provided with an irregularly shaped hole as shown in FIG. 4, similar to the actuator bracket 3, and the shock absorber rod inserted into this hole is Rotation is prevented in the same manner as described above. Further, as shown in FIG. 6, the lower cushion retainer 5, the lower cushion 7, and the body 8 are held together by large friction due to the increased tightening of the cushion 7. Since the shock absorber rod and the actuator bracket 3 are also prevented from rotating by the irregularly shaped hole shown in Fig. 4, the actuator 11 and the shock absorber rod rotate integrally with respect to the body even when bouncing. It will be stopped.

As described above, when the vehicle is in either bound or rebound state, the actuator 11 is integral with the shock absorber rod and remains stationary with respect to the body, so the lead wire 12 will not be twisted or pulled. do not have.

The second embodiment is basically the same as the first embodiment, and the upper cushion retainer 1 and the body 8 are rotated by making the body hole and retainer pilot part irregularly shaped as shown in FIG. 7A and B. This is an example of not doing so. In FIG. 7A, 1b indicates a protrusion formed on the retainer spigot. In this case, there is no need to provide the retainer 1 with claw plates.

The third embodiment is basically the same as the first embodiment, but in this case, the upper cushion retainer 1 is fixed to the body 8 by tightening bolts 14, as shown in FIG.

The fourth embodiment is an example in which the upper cushion retainer 1 is stopped from rotating using a cover 10 attached to the retainer 1. As one method, the claw plates of the cushion retainer 1 may be engaged with locking portions protruding from the inner wall of the cover 10 to prevent rotation, as shown in FIG. 9, or may be tightened with bolts or the like. Alternatively, as shown in FIG. 10, the cover 10 itself may be made into an irregular shape to prevent it from rotating relative to the body 8, or
The cover 10 may be fastened to the body 8 with bolts or the like. In these examples, the other configurations are the first
Same as in the example.

Although each embodiment of the present invention has been described above,
The present invention is not limited to these examples.

As described above, the present invention has cushions arranged above and below the body, and the rotation is prevented by the difference in the tightness of the cushions, so the structure is simple and there is no need to use specially shaped cushions. It is advantageous in that there are no In the present invention, the shock absorber is fastened to the body in a non-rotating manner with the above structure, so that the shock absorber rod and actuator are not rotated gradually while the vehicle is running, as in the conventional case. Therefore, the lead wires will not be twisted or broken. Therefore, shock absorbers with adjustable damping force have many excellent effects, such as making their functions sufficiently reliable.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing an example of the fastening structure of the present invention, FIG. 2 is a perspective view showing the cushion retainer of the first embodiment, and FIG. 3 is a sectional view taken along the line B-B in FIG. 2.
Fig. 4 is a sectional view taken along line A-A in Fig. 1, Fig. 5 is a sectional view showing the cushion shape when rebounding;
FIG. 6 is a sectional view showing the cushion shape when it rebounds; FIGS. 7A and B are sectional views taken along line C-C in FIG. 1 to show the relationship between the body and the retainer;
FIG. 8 is a sectional view showing another example of the cushion retainer, FIGS. 9A and B are views showing the state of engagement between the cushion retainer and the cover, A is a partial view of section D in FIG. 1, B shows a view from E in Figure A. FIG. 10 is a sketch showing the state of engagement between the cover and the body. In the figure, 1... upper cushion retainer, 2...
Upper cushion, 3... actuator bracket, 4, 6, 9... shock absorber rod,
5...Lower cushion retainer, 7...Lower cushion, 8...Body, 10...Cover, 11...
...actuator, 12...lead wire.

Claims (1)

[Claims] 1 Place the upper cushion retainer above the body so that it does not rotate beyond a predetermined level with respect to the body, and fit the lower cushion retainer into the step of the shock absorber rod below the body. A cushion is disposed between the retainer and the actuator bracket above the retainer, and between the lower surface of the body and the lower cushion retainer,
Further, the shock absorber rod insertion holes of the actuator bracket and the lower cushion retainer are irregularly shaped holes, and the cross-sectional shape of the shock absorber rod in the insertion hole portion is irregularly shaped to correspond to the insertion holes. Shock absorber and body fastening structure.