Continuous damping control shock absorber of dual solenoid valve structure

Patent metadata

Field	Value
Publication number	US-9347511-B2
Application number	US-201414304973-A
Country	US
Kind code	B2
Filing date	Jun 15, 2014
Priority date	Aug 14, 2013
Publication date	May 24, 2016
Grant date	May 24, 2016

Abstract

Provided is a continuous damping control shock absorber of a dual solenoid valve structure. The continuous damping control shock absorber of the dual solenoid valve structure includes a rebound solenoid valve and a compression solenoid valve. In the continuous damping control shock absorber, a separator tube for interworking prevention is installed to form a connection chamber at a position where the rebound separator tube and the compression separator tube are connected, thereby preventing interworking of the rebound solenoid valve and the compression solenoid valve 40 . A communication hole is formed in the compression separator tube to communicate with the connection chamber. The separator tube for interworking prevention is configured such that the fluid discharged from the rebound solenoid valve flows into not the low-pressure reservoir chamber but the high-pressure compression chamber during the compression stroke, thereby improving the operational independence of the rebound solenoid valve and the compression solenoid valve. Therefore, it is possible to solve the problem that the compression damping force and the rebound damping force are interworked by the opening of the passage of the rebound solenoid valve during the compression stroke, and to effectively prevent a reduction in the compression damping force.

First claim

What is claimed is:

1. A continuous damping control shock absorber of a dual solenoid valve structure having a rebound solenoid valve and a compression solenoid valve, the continuous damping control shock absorber comprising:
a separator tube for interworking prevention, which is installed to form a connection chamber at a position where a rebound separator tube and a compression separator tube are connected, thereby preventing interworking of the rebound solenoid valve and the compression solenoid valve; and
a communication hole which is formed in a cylindrical side surface of the compression separator tube to communicate with the connection chamber.

2. The continuous damping control shock absorber according to claim 1 , wherein, the separator tube for interworking prevention is configured to cause a fluid discharged from the rebound solenoid valve to flow into not a low-pressure reservoir chamber but a high-pressure compression chamber, thereby preventing the interworking of the rebound solenoid valve and the compression solenoid valve.

3. The continuous damping control shock absorber according to claim 1 , wherein the separator tube for interworking prevention is installed at a position surrounding a lower portion of the rebound separator tube and an upper portion of the compression separator tube.

4. A continuous damping control shock absorber of a dual solenoid valve structure, comprising:
a separator tube for interworking prevention, which is installed to form a connection chamber at a position where a rebound separator tube and a compression separator tube are connected,
wherein:
the separator tube for interworking prevention is configured to cause a fluid discharged from a rebound solenoid valve to flow into not a low-pressure reservoir chamber but a high-pressure compression chamber, and
a communication hole is formed in a cylindrical side surface of the compression separator tube to communicate with the connection chamber.

Assignees

• Mando Corp

Inventors

• Kim Eun Joong

Classifications

• F16F9/34 Primary

  Special valve constructions ({F16F9/44, F16F9/50 take precedence; filtering details F16F9/3285} ; valves in general F16K); Shape or construction of throttling passages · CPC title

• F16F9/461 Primary

  characterised by actuation means · CPC title

• F16F9/185

  Bitubular units (where compression of gas leads to a clear spring action F16F9/062) · CPC title

• F16F9/3235

  of cylinders (F16F9/483 takes precedence) · CPC title

• F16F9/512

  Means responsive to load action, {i.e. static load} on the damper or {dynamic} fluid pressure {changes} in the damper, {e.g. due to changes in velocity (F16F9/504, F16F9/516 take precedence; non-automatic damper adjustment from a distance using servo control, the servo pressure being created by the flow of damping fluid F16F9/465; self-pumping fluid springs in vehicle suspensions B60G17/044)} · CPC title