Vehicle Mirror Locking Joint with Compression Spring
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Solution Overview
Problem
Existing locking joints for vehicle exterior mirrors are characterized by rigidity, large size, high weight, and complex construction, which limits flexibility and increases component count.
Innovation Solution
A locking joint design featuring a joint axis component formed by a compression spring, eliminating the need for a bolt and incorporating a symmetrical structure with radially extending latching surfaces and a spiral compression spring for secure engagement, allowing for simpler assembly and disassembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional locking joints with multiple components (bolt, spring, bearing block, counter bearings) are used, then reliable locking function is achieved, but device complexity and component count increase
Solution Approach 1:
The patent combines the joint axis component, compression spring, and latching bodies into a single integrated assembly that pivots on the latching joint axis. The bearing block is merged with the joint axis component, and the compression spring is integrated between the latching bodies. This merging reduces the number of separate components while maintaining the reliable locking function through the coordinated action of the integrated elements.
Solution Approach 2:
The joint axis component serves multiple functions: it acts as the pivot axis for the latching arms, provides structural support for the compression spring, and integrates with the latching bodies to enable both locking and release functions. The compression spring simultaneously provides locking force and enables the release mechanism, eliminating the need for separate components for each function.
2Stability of the object's composition
If traditional locking joints with bolt and multiple fastening elements are used, then structural stability is achieved, but weight increases
Solution Approach 1:
The patent extracts and eliminates the bolt from the traditional locking joint design. Instead of using a bolt to hold the components together, the design relies on the integrated joint axis component and compression spring assembly that maintains structural stability without requiring separate fastening elements. This extraction of the bolt directly reduces the weight of the locking joint while preserving structural integrity through the alternative stabilization mechanism.
3Force
If symmetrical structure with radially extending latching surfaces is used, then even force distribution is achieved, but manufacturing precision requirements increase
Solution Approach 1:
While the overall structure aims for symmetry to distribute forces evenly, the patent incorporates asymmetric features in the latching bodies and latching surfaces that engage in a specific sequence. The latching surfaces are configured so that one latches before the other during engagement, which tolerates manufacturing variations better than perfectly symmetric simultaneous engagement would require. This controlled asymmetry in the latching sequence reduces manufacturing precision requirements while maintaining even force distribution in the locked state.
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 solution provides a lightweight, compact, and stable locking joint with enhanced torsional strength and reduced complexity, facilitating easier assembly and disassembly while maintaining a secure latching function.
Implementation Method 1
The joint axis component is formed by a compression spring (26) acting together with it
Data Source
Figure 1~3
Figure 2
Figure 4
AI summary
Locking joint comprises a joint axle component with locking bodies (22, 24). A first locking surface (34) is fixed in one of two counter bearings (30, 32) and a second locking surface (36) is arranged on one of the locking bodies. A pressure spring is arranged between the locking bodies and the counter bearings. Preferred Features:.