Shock absorber

Patent metadata

Field	Value
Publication number	US-10029531-B2
Application number	US-201715841446-A
Country	US
Kind code	B2
Filing date	Dec 14, 2017
Priority date	Aug 3, 2012
Publication date	Jul 24, 2018
Grant date	Jul 24, 2018

Abstract

A shock absorber provided with a suspension spring, the shock absorber includes a tube whose lower end portion is joined to a vehicle axle side portion provided with a tire, and a lower spring bearing that is provided on an outer circumference of the tube and supports a lower end of the suspension spring. An increased diameter part is provided on the outer circumference of the tube above the lower spring bearing, the increased diameter part having an outer diameter larger than an outer diameter of the tube.

First claim

The invention claimed is:

1. A shock absorber comprising:
a suspension spring;
a tube having a lower end portion joined to a vehicle axle side portion provided with a tire;
a lower spring bearing that is provided on an outer circumference of the tube and supports a lower end of the suspension spring; and
an increased diameter part provided on the outer circumference of the tube above the lower spring bearing, the increased diameter part having an outer diameter larger than an outer diameter of the tube,
wherein the lower spring bearing is arranged lower than an upper end portion of the tire in an axial direction of the tube, and
wherein a length from an outer circumferential surface of the increased diameter part to an inner periphery of the suspension spring facing the outer circumferential surface of the increased diameter part in a radial direction of the tube is shorter than a length from an outer periphery of the suspension spring facing the tire to the tire in the radial direction of the tube.

2. The shock absorber according to claim 1 , wherein the increased diameter part is a tubular member or a bottomed tubular member.

3. The shock absorber according to claim 2 , wherein the increased diameter part is made of synthetic resin.

4. The shock absorber according to claim 2 , wherein the increased diameter part is the tubular member and is held between the lower spring bearing and a bump stopper that is provided on an upper end portion of the tube.

5. The shock absorber according to claim 2 , wherein the increased diameter part is the bottomed tubular member, and a side of the tube above the lower spring bearing is inserted inside a hollow portion of the increased diameter part.

6. The shock absorber according to claim 1 , wherein the increased diameter part is formed integrally with the tube.

7. The shock absorber according to claim 6 , wherein a small diameter part is formed on an upper end portion of the tube, the small diameter part having a smaller diameter than the increased diameter part, and a bump stopper is pressed onto the small diameter part.

8. The shock absorber according to claim 6 , wherein the increased diameter part is formed by applying a diameter expansion process or a diameter reduction process to the tube.

Assignees

• Kyb Corp

Inventors

• Takeuchi Hideaki

Classifications

• B60G2204/1242

  on a damper, e.g. MacPerson strut · CPC title

• B60G2204/12422

  anchoring the end coils on the spring support plate · CPC title

• F16F1/128 Primary

  with motion-limiting means, e.g. with a full-length guide element or ball joint connections; with protective outer cover (F16F1/121 takes precedence) · CPC title

• B60G2206/8201

  by welding · CPC title

• B60G2204/4308

  Protecting guards, e.g. for rigid axle damage protection · CPC title