Bicycle Shock Buffer Structure for Bottom-Out Impact Protection

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Solution Overview

Problem

Bicycle shock absorbers suffer damage and reduced stability when hitting the bottom, leading to internal component damage and increased riding fatigue during rough road conditions.

Innovation Solution

A buffering structure comprising a foamed elastic block and a connecting base is integrated into the shock absorber tube, allowing fluid flow and distributing external forces to prevent direct impact on internal components, using a through hole and center hole configuration to absorb and distribute forces effectively.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the shock absorber uses traditional inner and outer tubes with gas, oil pressure, or spring mechanisms, then it can absorb vibration and maintain stable driving, but it suffers damage and reduced stability when hitting the bottom, leading to internal component damage

Engineering Contradiction:
Improveshock absorber durabilityVSAvoidimpact damage to internal components
Core Design Contradiction:
ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent introduces a buffering structure with foamed elastic blocks positioned at the bottom of the shock absorber tube before the main shock absorption mechanisms. This preliminary cushioning layer absorbs extreme impact forces when the shock absorber hits bottom, preventing direct transmission of harmful forces to the internal gas, oil pressure, and spring components, thereby avoiding damage while maintaining the original shock absorption functionality.

Inventive Principle:
Principle #11Beforehand cushioning (Prior cushioning)

Solution Approach 2:

The foamed elastic block acts as an intermediary element between the external impact and the internal shock absorption components. It mediates the force transmission by first absorbing extreme impacts and then allowing controlled force transmission to the main shock absorption mechanisms, protecting the internal components from direct damage while maintaining system functionality.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Object-affected harmful factors

If the shock absorber hits bottom during rough road conditions, then it directly damages internal components, but adding protective structures increases device complexity

Engineering Contradiction:
Improveimpact protectionVSAvoidshock absorber structure
Core Design Contradiction:
Object-affected harmful factorsVSDevice complexity

Solution Approach 1:

The shock absorber system is segmented into distinct functional zones: the original inner and outer tubes with gas, oil pressure, and spring mechanisms for normal shock absorption, and a separate buffering structure with foamed elastic blocks for extreme impact protection. This segmentation allows each component to specialize in its specific function, protecting internal components without requiring complete redesign of the entire system.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The buffering structure with foamed elastic blocks is nested within the existing shock absorber tube structure. The connecting bases are inserted into the shock absorber tube, and the foamed elastic blocks are positioned within the available space, utilizing the existing structural envelope. This nesting approach adds protection functionality without significantly increasing overall device complexity or external dimensions.

Inventive Principle:
Principle #7Nested doll (Nesting)

3Reliability

If the shock absorber uses buffering structure with foamed elastic block, then it avoids damage to internal components, but the structure requires additional connecting bases and through holes increasing manufacturing complexity

Engineering Contradiction:
Improvecomponent protectionVSAvoidassembly complexity
Core Design Contradiction:
ReliabilityVSEase of manufacture

Solution Approach 1:

The connecting base integrates multiple functions into a single component: it provides structural support, creates the through hole for foamed elastic block insertion, and forms the connection interface with the shock absorber tube. This merging of functions reduces the number of separate parts and simplifies the assembly process, making the manufacturing and installation of the buffering structure more straightforward despite the added functionality.

Inventive Principle:
Principle #5Merging (Combining)

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

The buffering structure effectively reduces the risk of internal damage and enhances riding stability by compressing and deforming the foamed elastic block, thereby minimizing shock absorber component stress and rider fatigue.

Implementation Method 1

the foam elastic block being compressed and deformed

Methodology Applied
Scientific EffectCompression: Compression

Implementation Method 2

the foam elastic block being compressed and deformed

Methodology Applied
Scientific EffectDeformation: Deformation

Implementation Method 3

foamed elastic block

Methodology Applied
Scientific EffectElasticity: Elasticity

Data Source

PatentUS11891151B1Bicycle shock absorbing and buffering structure
Publication Date: 2024.02.06 DAH KEN INDUSTRIAL CO LTD
  • US11891151B1 patent drawing
  • US11891151B1 patent drawing
  • US11891151B1 patent drawing

AI summary

A bicycle shock absorbing and buffering structure mounted on one side of a shock absorber tube is provided. The bicycle shock absorbing and buffering structure includes at least one foamed elastic block and at least one connecting base. The foamed elastic block has a through hole passing through two opposite ends thereof. The connecting base has a dividing plate, a connecting column extending outward from opposite sides of the dividing plate, and a center hole passing through the connecting column and the dividing plate. The connecting base is inserted into the through hole of the foamed elastic block with a connecting column, and the dividing plate is located at and stacks on the end of the foamed elastic block, and the through hole is communicated with the center hole, the foamed elastic block and the connecting base are strung together.