JPH0662241U - Mounting structure for mounting mount of shock absorber - Google Patents

Abstract

(57) [Summary] [Purpose] To prevent the stopper sheet for receiving the mount base from coming off the piston rod. [Structure] The piston rod 2 has a cotter ring 3 on the upper end.
The stopper sheet 4 for receiving the mount base A is press-fitted into the upper end portion of the piston rod 2 to fix the cotter ring 3.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a structure for mounting a mount base on the upper end of the piston rod of a shock absorber.

[0002]

[Prior art]

 Conventionally, in order to attach a mount base for mounting the upper end of the piston rod of the hydraulic shock absorber to the vehicle body, a stopper seat for receiving the mount base is fitted on the upper end of the piston rod, and the stopper seat is locked. A stopper ring is attached to the upper end of the piston rod.

[0003]

[Problems to be solved by the device]

 However, with such a mounting structure, when the mount base is placed on the stopper seat and tightened with the nut, the surface pressure is high due to the axial force when the stopper ring and piston rod contact part is tightened. And sometimes buckle. In this case, it is possible to increase the wire diameter of the stopper ring in order to reduce the surface pressure, but when inserting the stopper ring into the ring groove, the rigidity becomes high and the workability deteriorates, causing permanent deformation. I may end up doing it.

[0004]

[Means for Solving the Problems]

 In order to solve the above problems, the present invention fixes the cotter ring by press-fitting the stopper sheet into the upper end of the piston rod with the cotter ring fitted in the upper end of the piston rod.

[0005]

[Action]

 By receiving the stopper sheet with the cotter ring, the strength is increased and the stopper sheet can be prevented from coming off.

[0006]

【Example】

 Embodiments of the present invention will be described below with reference to the accompanying drawings. Here, FIG. 1 is a sectional view of a hydraulic shock absorber to which the mount base mounting structure according to the present invention is applied, FIG. 2 is an enlarged sectional view of a main part of the shock absorber before mounting the mount base, and FIG. 3 is a mount of the shock absorber. FIG. 4 is an enlarged cross-sectional view of an essential part in a base-attached state, and FIG. 4 is an exploded perspective view of FIG.

A stopper seat 4 locked by a cotter ring 3 is fixed to an upper end portion of a piston rod 2 inserted in a cylinder 1 of a hydraulic shock absorber, and an inner mount base 5 is fixed by a nut 6 on the stopper seat 4. It is fixed. An outer mount base 8 is attached to the inner mount base 5 via a mount rubber 7.

A bolt 9 for attaching to the vehicle body is inserted through the outer peripheral portion of the outer mount base 8, and an upper spring seat 10 is fitted on the inner peripheral surface of the lower portion of the outer mount base 8. A suspension spring 12 is provided between the under spring sheet 11 fitted to the surface.

As shown in FIG. 4, the cotter ring 3 is made up of half-cylindrical members 13 and 13 having a tapered portion 3a on the outer circumference divided into two parts, and a ring groove formed on the outer circumference of the upper end of the piston rod 2. A ring portion 3b formed on the inner peripheral surface of the lower portion of each of the semi-cylindrical members 13 and 13 is fitted into 2a.

Then, with the cotter ring 3 fitted in the upper end portion of the piston rod 2, a stopper sheet 4 having a taper portion 4a corresponding to the tapered portion 3a of the cotter ring 3 is formed inside the piston rod 2 from above. The stopper sheet 4 is fitted and press fit into the large diameter portion 2b at the upper end of the piston rod 2 to fix the cotter ring 3.

Since the stopper sheet 4 is received by the cotter ring 3 in this manner, buckling does not occur even when the mount base A is placed on the stopper sheet 4 and the nut 6 is tightened, and the strength is high. Therefore, the stopper sheet 4 can be prevented from coming off.

Further, by fixing the cotter ring 3 to the tip end portion of the piston rod 2 with the stopper sheet 4, when the mount base A is installed at the destination, the stopper sheet 4 and the cotter ring 3 are prevented from coming off during transportation. it can.

5 and 6 are a perspective view and a plan view of another embodiment of the cotter ring according to the present invention. The cotter ring 15 has a horseshoe shape in a plan view, has a tapered portion 15a on the outer peripheral portion, and has a ring portion 15b fitted on the ring groove 2a formed on the outer periphery of the upper end portion of the piston rod 2 on the inner surface of the lower portion.

When this cotter ring 15 is used, the cotter ring 15 can be held at the upper end of the piston rod 2 by fitting the ring portion 15b into the upper end of the piston rod 2 in alignment with the ring groove 2a, thus improving workability. Along with this, cost down can be achieved.

[0015]

[Effect of device]

 As described above, according to the present invention, the stopper sheet is pressed into the upper end portion of the piston rod with the cotter ring fitted in the upper end portion of the piston rod to fix the cotter ring, and the stopper sheet is received by the cotter ring. As a result, the strength is increased and the stopper sheet can be prevented from coming off.

[Brief description of drawings]

FIG. 1 is a sectional view of a hydraulic shock absorber to which a mount base mounting structure according to the present invention is applied.

FIG. 2 is an enlarged sectional view of an essential part of the shock absorber before mounting a mount base.

FIG. 3 is an enlarged sectional view of an essential part of the shock absorber with a mount base attached.

FIG. 4 is an exploded perspective view of FIG.

FIG. 5 is a perspective view of another embodiment of the cotter ring according to the present invention.

FIG. 6 is a plan view of the cotter ring.

[Explanation of symbols]

1 ... Cylinder, 2 ... Piston rod, 3, 15 ... Cotter ring, 4 ... Stopper sheet, 5 ... Inner mount base, 7 ... Mount rubber, 8 ... Outer mount base, A ... Mount base.

Claims (2)

[Scope of utility model registration request] 1. A mounting structure for mounting a mount base to an upper end portion of a piston rod of a shock absorber, wherein a stopper sheet is press-fitted into the upper end portion of the piston rod while the cotter ring is fitted in the upper end portion of the piston rod to fix the cotter ring. The mount base mounting structure of the shock absorber, which is characterized in that 2. The mount for a shock absorber according to claim 1, wherein the cotter ring is formed of a tubular member having a tapered portion on the outer circumference divided into two parts or a horseshoe-shaped member having a tapered portion on the outer circumference. Base mounting structure.