Shock Absorber Cover Cap Geometry for Stable Vibration Insulation

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Solution Overview

Problem

The impact absorbing member in existing shock absorber insulators loses vibration insulation properties when subjected to high pushing forces, leading to ineffective inhibition of road surface vibrations and resulting noise.

Innovation Solution

A cover cap with a circular plate shape and a hollow portion that increases in diameter towards one surface, combined with an insulator featuring a movable bushing and an impact absorbing member that remains spaced from the cover cap even during bushing movement, preventing contact and maintaining vibration insulation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Strength

If the impact absorbing member is disposed in the body of the insulator to absorb impact, then impact absorption is improved, but when high pushing force is applied, the impact absorbing member deforms and contacts the cover cap, causing loss of vibration insulation properties

Engineering Contradiction:

Improveimpact absorption capabilityVSAvoidvibration insulation stability

Core Design Contradiction:

StrengthVSReliability

Solution Approach 1:

The patent introduces a buffer member as an intermediary component positioned between the impact absorbing member and the cover cap. This buffer member prevents direct contact between the deformed impact absorbing member and the cover cap, thereby maintaining vibration insulation properties even under high pushing forces while preserving the impact absorption capability of the impact absorbing member.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Adaptability or versatility

If the bushing is made movable in the insulator to accommodate piston rod motion, then motion flexibility is improved, but the bushing movement causes deformation of the impact absorbing member leading to contact with the cover cap

Engineering Contradiction:

Improvebushing motion flexibilityVSAvoidvibration insulation stability

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The buffer member serves as a mediator that allows the bushing to move freely for accommodating piston rod motion while preventing the impact absorbing member from contacting the cover cap during this movement, thus maintaining both motion flexibility and vibration insulation stability.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The buffer member provides beforehand cushioning by being pre-positioned between the impact absorbing member and the cover cap, preventing harmful contact before it can occur during bushing movement or under high pushing forces.

Inventive Principle:

Principle #11Beforehand cushioning (Prior cushioning)

3Device complexity

If the impact absorbing member is pushed by the cover cap under high pushing force, then the impact absorbing member loses its vibration insulation properties, but the cover cap structure remains simple

Engineering Contradiction:

Improvecover cap structure simplicityVSAvoidvibration insulation stability

Core Design Contradiction:

Device complexityVSReliability

Solution Approach 1:

The buffer member is introduced as a simple intermediary component that prevents direct contact between the impact absorbing member and the cover cap, maintaining vibration insulation stability without significantly complicating the overall structure.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The buffer member provides beforehand cushioning to prevent the impact absorbing member from being pushed by the cover cap, thereby maintaining vibration insulation properties while keeping the structural addition minimal.

Inventive Principle:

Principle #11Beforehand cushioning (Prior cushioning)

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

Stably reduces transmitted vibrations by preventing the impact absorbing member from losing its insulation properties, effectively inhibiting road surface vibrations and minimizing noise.

Implementation Method 1

an impact absorbing member for absorbing impact is interposed between the bushing and the body of the insulator

Methodology Applied

Scientific EffectElastic deformation: Elasticity

Implementation Method 2

A bushing coupled to one end of the piston rod is movably installed in the insulator

Methodology Applied

Scientific EffectFriction: Friction

Data Source

PatentUS12163568B2Cover cap and insulator for shock absorber including the same

Publication Date: 2024.12.10 HL MANDO CORP

AI summary

The present disclosure relates to a cover cap and an insulator for a shock absorber including the same, and the cover cap according to the embodiment of the present disclosure includes a cap main body having a circular plate shape, and a cap hollow portion penetrating a center of the cap main body. Further, a part or the entirety of the cap hollow portion is formed such that a diameter thereof increases toward one surface of the cap main body and the diameter maximally increases at one surface of the cap main body.