Shield Connector Holder Locking With an Inclined Shell Surface
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing shield connectors fail to effectively prevent the holder from coming off from the shell, leading to potential disconnection and failure in applications such as vehicle-mounted devices.
Innovation Solution
A shield connector design featuring a cylindrical housing, an annular seal member, a holder with an engagement piece, and a conductive shell with a protruding portion having an inclined locking surface. The engagement piece is locked by the shell's protruding portion, ensuring the holder remains securely attached.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional locking structure with a protruding portion is used, then the holder can be locked to the shell, but the holder may still come off from the shell under vibration or stress
Solution Approach 1:
The locking surface of the protruding portion is designed as an inclined surface rather than a flat surface. This inclined surface creates a wedge-like effect where the engagement piece is pushed deeper into the locking position under axial load, converting linear force into radial clamping force that prevents the holder from coming off during vibration or stress
Solution Approach 2:
The inclination angle of the locking surface is optimized to balance between ease of insertion and locking reliability. The specific angle range (15-45 degrees) ensures that the engagement piece can smoothly engage during assembly while providing sufficient mechanical advantage to prevent disengagement under vibration or stress conditions
Data Source
AI summary
A shield connector includes: a housing that holds a terminal; a seal member; a holder coupled to the housing along an axial direction of the housing to support the seal member; and a shell, in which the shell has a protruding portion protruding inward from an inner wall surface of the shell, the holder has an engagement piece extending along the axial direction, and is locked by the shell by engaging the engagement piece with the protruding portion, the protruding portion has a locking surface that locks the engagement piece, and the locking surface is a surface facing an insertion direction in which the holder is inserted into the shell, and is an inclined surface toward the insertion direction as the locking surface extends toward a tip of the protruding portion in a protruding direction.