Vibration-Resistant Connector With Spring Shield Housing
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Solution Overview
Problem
Conventional cylindrical electrical connectors are prone to damage from axial vibration due to the direct transfer of external forces to the insulation body and lack effective electromagnetic shielding.
Innovation Solution
A connector design featuring a metal shield housing with a spring positioned between a positioning structure on the inner wall and an outer wall, which absorbs impact and provides electromagnetic shielding by connecting the shield housing, shield tail cover, and spring as an electromagnetic shield.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a rigid metal shield housing is used, then electromagnetic shielding performance is improved, but vibration resistance deteriorates due to direct force transfer to the insulation body
Solution Approach 1:
A spring is introduced as an intermediary element between the metal shield housing and the insulation body. The spring absorbs axial impact forces through elastic deformation, preventing direct force transfer to the insulation body while maintaining the electromagnetic shielding function of the metal housing.
Solution Approach 2:
The spring is pre-installed in a compressed state between the shield housing and insulation body, creating a cushioning effect before external impacts occur. This beforehand cushioning allows the system to absorb vibration energy through elastic deformation, protecting the insulation body from damage.
2Ease of manufacture
If a single metal sheet shield housing is used, then manufacturing simplicity is improved, but vibration resistance deteriorates due to lack of energy absorption capability
Solution Approach 1:
The shield housing system is segmented into two functional parts: the rigid metal shield housing (stamped from single sheet for ease of manufacture) and the spring (separate component for vibration absorption). This segmentation allows each component to be optimized for its specific function while maintaining manufacturing simplicity.
Solution Approach 2:
The connector assembly combines different material properties: the metal shield housing provides electromagnetic shielding and structural integrity, while the spring (typically metal with elastic properties) provides vibration absorption. This composite approach integrates materials with complementary characteristics to resolve the contradiction.
3Object-affected harmful factors
If the insulation body is made of plastic for electrical insulation, then electrical insulation performance is improved, but strength deteriorates making it vulnerable to axial impact forces
Solution Approach 1:
The spring serves as a protective intermediary between the external impact environment and the plastic insulation body. It absorbs axial impact forces through elastic deformation, preventing these forces from reaching the insulation body and causing damage, while the insulation body maintains its plastic material properties for electrical insulation.
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 connector effectively absorbs axial impacts, enhancing vibration resistance and electromagnetic shielding performance, protecting the insulation body and improving overall connector durability and shielding effectiveness.
Implementation Method 1
A spring is disposed within the shield housing and is fitted over the body. A first end of the spring is abutted against the positioning structure of the body and an opposite second end abuts against the positioning structure of the shield housing.
Implementation Method 2
The known cylindrical connector is not capable of providing effective electromagnetic shielding to a wire connected to the cylindrical connector
Data Source
AI summary
A connector comprises a body, a shield housing fitted over the body, and a spring disposed within the shield housing and fitted over the body. The body has a first positioning structure formed on an outer wall of the body. The shield housing has a second positioning structure formed on an inner wall of the shield housing. The spring has a first end abutting against the second positioning structure and an opposite second end abutting against the first positioning structure.