Electronically controlled shock absorber with direct-drive flow path structure and variable valve therefor

The electronically controlled shock absorber with a direct-connection type flow path structure addresses the challenge of maintaining a small volume and weight while varying damping force, achieving efficient damping force adjustment and cost reduction by integrating a variable valve without a separate separator tube.

JP2026086429AActive Publication Date: 2026-05-26INGAGE
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Patent Information

Authority / Receiving Office
JP · JP
Patent Type
Applications
Current Assignee / Owner
INGAGE
Filing Date
2026-01-14
Publication Date
2026-05-26

AI Technical Summary

Technical Problem

Existing shock absorbers in autonomous vehicles face challenges in maintaining a small volume and weight while varying damping force, as the inclusion of a separator tube increases the reservoir chamber's volume, leading to higher internal pressure and manufacturing costs.

Method used

An electronically controlled shock absorber with a direct-connection type flow path structure that integrates a variable valve directly connected to the operating cylinder, eliminating the need for a separate separator tube by using a sealing member that maintains close contact with the chamber opening without welding, allowing for variable damping force adjustment.

Benefits of technology

The solution maintains a small volume and weight while enabling independent adjustment of damping forces for both expansion and compression chambers, reducing manufacturing costs and preserving maximum allowable pressure within the reservoir chamber.

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Abstract

The present invention provides an electronically controlled shock absorber and a variable valve therefor that can maintain a small volume and weight while varying the damping force via external input. [Solution] The device may include an outer cylinder that extends vertically, has a hollow columnar shape, houses an operating cylinder inside, has a mounting opening formed on its outer circumferential surface at a position corresponding to the chamber opening, and forms a reservoir chamber between its inner circumferential surface and the outer circumferential surface of the operating cylinder, and a variable valve that is mounted on the outer surface of the outer cylinder at a position corresponding to the mounting opening, configured such that a fluid flowing from the inlet to the outlet passes through its interior, and is configured to change the damping force by changing the flow path via an external input. When the variable valve is coupled to the outer circumferential surface of the outer cylinder, the sealing member is compressed, connecting the chamber opening to the inlet through the through hole, and sealing the chamber opening to the reservoir chamber.
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