8-Shaped Wire Shaft Fixing Clip for Impact Resistance
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Solution Overview
Problem
Conventional shaft fixing structures are prone to failure under impact forces, such as those from rear-end collisions, causing the shaft to bend and disengage from the clip, leading to potential drop-out issues, and existing solutions like pipe joints increase complexity and part count, compromising workability.
Innovation Solution
A shaft fixing clip formed from a metal wire member bent into an 8-like shape with crossed end portions and pinch areas, providing a strong spring force to securely fit into a groove and resist disengagement, combined with a bush structure that enhances attachment workability and locking.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional U-like clip is used to fix the shaft, then the structure is simple, but the shaft may disengage under impact forces
Solution Approach 1:
The clip is designed with elastic deformation capability, allowing it to dynamically adapt to impact forces. The wire material and geometry enable the clip to flex and absorb collision energy while maintaining shaft retention, transforming a static fixation into a dynamic response system.
Solution Approach 2:
The clip utilizes composite structural design combining wire material properties with specific geometric configuration (anvil portion, engagement portion, elastic portion). This composite approach integrates multiple functional elements into a single component that simultaneously provides strength, elasticity, and engagement capability.
2Reliability
If additional fasteners are added to prevent snap retainer drop-out, then the connection is more secure, but the number of parts increases and workability deteriorates
Solution Approach 1:
Multiple functional elements are merged into the single clip structure: the anvil portion for impact resistance, the engagement portion for shaft retention, and the elastic portion for flexibility. This consolidation eliminates the need for separate fasteners while maintaining connection reliability and improving workability.
Solution Approach 2:
The clip serves multiple functions simultaneously: it anchors the shaft, absorbs impact forces, provides elastic recovery, and prevents drop-out. This multi-functionality replaces what would traditionally require multiple specialized components, simplifying the overall assembly process.
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 clip securely holds the shaft in place even under strong forces and simplifies attachment by reducing the number of parts and improving workability, ensuring reliable fixation without the need for additional fasteners.
Implementation Method 1
the metal wire member is bent into an 8-like shape; both end portions of the metal wire member are crossed in an end portion of one of loops to respectively protrude toward both sides; tip ends of the both end portions are bent; the loop that is positioned on a side of the both end portions is configured as the shaft clamping portion; and bent portions of the tip ends of the both end portions are configured as the pinch portion
Data Source
AI summary
A shaft fixing clip that is fitted into a groove of a shaft, the shaft fixing clip includes: a shaft clamping portion that is formed by a metal wire member; and a pinch portion that is monolithically formed with the shaft clamping portion, wherein: the metal wire member is bent into an 8-like shape; both end portions of the metal wire member are crossed in an end portion of one of loops to respectively protrude toward both sides; tip ends of the both end portions are bent; the loop that is positioned on a side of the both end portions is configured as the shaft clamping portion; and bent portions of the tip ends of the both end portions are configured as the pinch portion.