Shock absorber

• US 9,873,302 B2
• Filed: 07/17/2013
• Issued: 01/23/2018
• Est. Priority Date: 08/03/2012
• Status: Expired due to Fees

• Current Assignee: KYB Corp.
• Original Assignee: KYB Corp.
• Inventors: Takeuchi, Hideaki
• Primary Examiner(s): TORRES WILLIAMS, MELANIE
• Application Number:
  US14/411,927
• Publication Number:
  US 20150165854A1
• Time in Patent Office: 1,651 Days
• Field of Search: 267220, 267221
• CPC Class Codes: B60G 15/062 the spring being arranged around the damper B60G15/061, B60G15/067, B60G15/07 take precedence
• CPC Class Codes: B60G 15/063 characterised by the mounting of the spring on the damper B60G15/065, B60G15/066 take precedence
• CPC Class Codes: B60G 2202/31 with the spring arranged around the damper, e.g. MacPherson strut
• CPC Class Codes: B60G 2202/312 The spring being a wound spring
• CPC Class Codes: B60G 2204/1242 on a damper, e.g. MacPerson strut
• CPC Class Codes: B60G 2204/12422 anchoring the end coils on the spring support plate
• CPC Class Codes: B60G 2204/4308 Protecting guards, e.g. for rigid axle damage protection
• CPC Class Codes: B60G 2204/45 Stops limiting travel
• CPC Class Codes: B60G 2206/41 Dampers
• CPC Class Codes: B60G 2206/8201 by welding
• CPC Class Codes: B60G 2206/821 by gluing
• CPC Class Codes: F16F 1/128 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 Class Codes: F16F 1/38 with a sleeve of elastic material between a rigid outer sleeve and a rigid inner sleeve or pin , i.e. bushing-type hydraulically-damped bushes F16F13/14; suppression of vibrations in rotating systems by making use of elastomeric spring members between rotating elements, driveline torque being transmitted therebetween F16F15/126, by making use of a dynamic damping mass attached to a rotating element by means of elastomeric springs F16F15/14; pivots per se F16C11/00; elastic or yielding bearings or bearing supports F16C27/00; parts of sliding-contact bearings, e.g. bushes F16C33/04
• CPC Class Codes: F16F 2230/007 with, or used as an end stop or buffer; Limiting excessive axial separation

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.

Claims

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

a plate member provided on the outer circumference of the tube above the lower spring bearing, the plate member having an outer diameter larger than an outer diameter of the tube,

wherein the plate member is provided on a surface on the outer circumference of the tube at a side facing away from the tire,

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 plate member to an inner periphery of the suspension spring facing the outer circumferential surface of the plate member in the radial direction of 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 plate member is provided on, out of an outer circumferential surface of the tube, only a surface at a side opposite to a surface opposing the tire.

3. The shock absorber according to claim 1, wherein

the plate member is formed along an axial direction of the tube.

4. The shock absorber according to claim 1, wherein

the plate member is made of metal and welded to the tube.

5. The shock absorber according to claim 1, wherein

the plate member is provided in such a manner that a lower end thereof is in contact with the lower spring bearing.

6. A shock absorber, comprising:

a suspension spring;

a tube whose lower end portion is 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

a plate member provided on the outer circumference of the tube above the lower spring bearing, the plate member having an outer diameter larger than an outer diameter of the tube,

wherein the plate member is provided on, out of an outer circumferential surface of the tube, a surface at a side opposite to a surface opposing the tire,

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 the plate member having a downward axially-facing surface contacting an upward axially-facing surface of the lower spring bearing.

7. A shock absorber, comprising:

a suspension spring;

a tube whose lower end portion is 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

a plate member provided on the outer circumference of the tube above the lower spring bearing, the plate member having an outer diameter larger than an outer diameter of the tube,

wherein the plate member is provided on, out of an outer circumferential surface of the tube, a surface at a side opposite to a surface opposing the tire,

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 the plate member comprises a downward axially-facing surface, the downward axially-facing surface is arranged higher than an upward axially-facing surface of the lower spring bearing, and the downward axially-facing surface is arranged lower than the upper end portion of the tire in an axial direction of the tube.