Connector Slider Cam Groove Clearance for Vibration Durability
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Solution Overview
Problem
Connectors with cam followers experience reduced durability due to stress from engine vibrations, as the cam follower is constantly in contact with the cam groove, leading to potential damage.
Innovation Solution
A connector design featuring a cam pin with an angle portion on the back side and a recessed cam groove that prevents the cam pin from contacting the inner surface of the recess, reducing stress by avoiding direct contact with the cam groove and recess in the connected state.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the cam follower is kept constantly in contact with the cam groove to enable connection, then the connection function is ensured, but stress is applied to the cam pin due to vibration, reducing durability
Solution Approach 1:
The harmful constant contact between the cam pin and cam groove is eliminated by extracting the connection function to a separate connection assisting member. The cam pin is removed from its traditional role of both connection and positioning, leaving only the positioning function while the connection function is transferred to the connection assisting member with cam groove structure.
Solution Approach 2:
The connection assisting member is divided into distinct functional zones: a connection cam surface for pushing during connection, and a recessed portion that provides clearance. This segmentation allows the cam pin to be separated from the connection action while maintaining its positioning role, reducing stress exposure.
2Stability of the object's composition
If the cam pin contacts the inner surface of the recess in the connected state, then positioning is ensured, but stress is applied to the cam pin, reducing durability
Solution Approach 1:
The cam groove structure has different local qualities: the connection cam surface has a specific inclination for connection assistance, while the recessed portion provides clearance space. The cam pin is positioned to contact only the connection cam surface during connection, while the recessed portion remains clear to avoid stress concentration on the cam pin.
Data Source
AI summary
A connector includes a first housing and a second housing to be connected to each other, and a connection assisting member to be mounted into the first housing. The connection assisting member includes a cam groove extending from an entrance to a back end. The cam groove has a connection cam surface to be pushed by a cam pin in a connecting direction of the first housing and a recess connected to an end part of the connection cam surface on the side of the back end and recessed more in the connecting direction than the end part of the connection cam surface on the side of the back end. The cam pin located on the side of the back end of the cam groove is arranged not to contact an inner surface of the recess with the first and second housings connected to each other.