Hydraulic Damper Reservoir Baffle for Bubble-Free Oil Control

Resolve Bottlenecks,
Find Innovative Solutions
Generate Solutions

Solution Overview

Problem

The hydraulic damping device faces challenges in preventing bubble mixing into the liquid due to surface ruffling, which is exacerbated by separate disturbance prevention members that may move during operation, hindering their effectiveness.

Innovation Solution

A hydraulic damping device design incorporating a cylinder unit, a liquid reservoir, a partitioning unit, and a separate disturbance prevention member with a restricting part to prevent movement, ensuring reliable prevention of bubble mixing by stabilizing the liquid surface.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Stability of the object's composition

If a separate disturbance prevention member is used to prevent liquid surface ruffling, then the liquid surface stability is improved, but the disturbance prevention member may move during operation reducing its effectiveness

Engineering Contradiction:
Improveliquid surface stabilityVSAvoiddisturbance prevention effectiveness
Core Design Contradiction:
Stability of the object's compositionVSReliability

Solution Approach 1:

The disturbance prevention member is integrated with the cylinder structure, merging two previously separate components. The protrusion of the disturbance prevention member extends into the liquid reservoir and is structurally connected to the cylinder, ensuring it cannot move independently during operation while maintaining its liquid surface stabilizing function.

Inventive Principle:
Principle #5Merging (Combining)

2Object-affected harmful factors

If a disturbance prevention member is provided separately from the cylinder, then the liquid surface disturbance is reduced, but the member may move during operation hindering its effectiveness

Engineering Contradiction:
Improveliquid surface disturbanceVSAvoidbubble prevention reliability
Core Design Contradiction:
Object-affected harmful factorsVSReliability

Solution Approach 1:

The disturbance prevention member is merged with the cylinder as an integrated structure. The protrusion extending into the liquid reservoir is structurally connected to the cylinder body, eliminating independent movement while maintaining its ability to prevent liquid surface disturbance and bubble formation.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The disturbance prevention member is designed with a protrusion that extends into the liquid reservoir in advance, creating a physical barrier before liquid surface disturbance can occur. This preliminary positioning prevents ruffling and bubble mixing at the source.

Inventive Principle:
Principle #9Preliminary anti-action

Data Source

PatentUS10968975B2Hydraulic damping device
Publication Date: 2021.04.06 ASTEMO LTD
  • US10968975B2 patent drawing
  • US10968975B2 patent drawing
  • US10968975B2 patent drawing

AI summary

This hydraulic damping device comprises a cylinder for containing oil; a reservoir chamber R which is provided in the outer part of the cylinder and in which liquid accumulates; a piston provided so as to be axially movable within the cylinder and dividing the space within the cylinder into a first oil chamber and a second oil chamber, which contain oil; a baffle member provided as a separate element from the cylinder, the baffle member having a body which is provided in the reservoir chamber R, and also having a protrusion which protrudes from the body, the baffle member preventing the waving of the surface of oil in the reservoir chamber R; and a limiting section (first section to be held) provided to the baffle member and limiting the movement of the baffle member on both one side and the other side in the axial direction.