Lamp Connector Housing With Rotation-Preventing Lock Structure
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Solution Overview
Problem
Existing connector assemblies face issues with waterproofing performance deterioration due to rotation of the connector housing relative to the fixing member, necessitating effective suppression of such rotation.
Innovation Solution
The connector housing features a protective wall with a rotation preventing rib protruding in a direction intersecting the axis, protecting the elastic locking piece and preventing rotation, while a retrofit connector housing includes a deformation restricting portion to restrict elastic deformation of the locking piece.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a waterproofing rubber ring is provided around the connector housing to ensure waterproofing performance, then waterproofing is improved, but rotation of the connector housing relative to the fixing member causes deterioration of the rubber ring's sealing effect
Solution Approach 1:
The rotation preventing rib is provided on the protective wall before assembly, proactively preventing rotation from occurring in the first place. This preliminary structural feature ensures that the waterproofing rubber ring maintains its sealing position without rotation-induced deterioration, resolving the contradiction between waterproofing reliability and rotation stability.
2Device complexity
If the connector housing is designed without rotation prevention features, then the structure is simpler, but the connector housing rotates relative to the fixing member causing waterproofing deterioration
Solution Approach 1:
The rotation preventing rib is integrated into the protective wall structure, merging two functions (protection and rotation prevention) into a single component. This integration adds minimal structural complexity while effectively preventing rotation and maintaining waterproofing performance.
3Strength
If the elastic locking piece is made more robust to prevent rotation, then rotation resistance is improved, but the elastic locking piece becomes larger and may interfere with other components
Solution Approach 1:
The rotation prevention function is separated from the elastic locking piece and assigned to a dedicated rotation preventing rib on the protective wall. This segmentation allows the elastic locking piece to maintain its original compact size for locking functionality, while the rotation preventing rib provides the necessary rotation resistance without increasing overall component volume.
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
This configuration effectively suppresses rotation of the connector relative to the fixing member, maintains waterproof integrity, and simplifies the connector structure by integrating the rotation prevention rib with the protective wall, thereby enhancing assembly performance and preventing damage to the elastic locking piece.
Implementation Method 1
an elastic locking piece extending from the seating surface along the first axis and configured to be locked to the fixing member
Data Source
AI summary
A connector includes a connector housing to be fixed to a lamp body having a fixing hole penetrating the lamp body along a first axis. The connector housing includes: a body portion capable of passing through the fixing hole; a flange portion extending from the body portion outward in a direction intersecting the first axis; a seating surface provided on the flange portion and capable of abutting against the lamp body along the first axis; an elastic locking piece extending from the seating surface along the first axis and capable of being locked to the lamp body; and a protective wall provided adjacent to the elastic locking piece to protect the elastic locking piece. The protective wall has a rotation preventing rib protruding in a direction intersecting the first axis to prevent the connector housing from rotating about the first axis relative to the lamp body.