Connector Housing Coupling Structure to Prevent Harness Pull Detachment
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Solution Overview
Problem
The existing connector design is prone to misalignment and detachment under tensile force, as the force is mainly received by either the housing body or the cover, and the connecting portion can deteriorate over time, leading to potential detachment of the cover from the housing body.
Innovation Solution
A connector housing design that includes a board with U-shaped conductor exposed portions, a harness guide portion, a cover that clamps the harness between the board and the cover, and projecting pieces to restrict movement, enhancing the integral coupling property and preventing misalignment or detachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the connector uses a simple structure with housing body and cover connected by a connection portion, then the connector can be configured simply and omit terminal fitting, but the coupling between housing body and cover tends to misalign or detach under strong tensile force
Solution Approach 1:
The connector is divided into housing body and cover as separate components that can be assembled together, allowing for simple configuration while maintaining reliability through proper coupling design. The connection portion is segmented into engagement protrusions and engagement grooves that work together to secure the coupling.
Solution Approach 2:
The engagement protrusions of the housing body are nested into the engagement grooves of the cover, creating an interlocking structure. This nesting arrangement ensures that the coupling remains stable under tensile force while maintaining the simple overall structure of the connector.
2Device complexity
If the connection portion serves as one end of the coupling between housing body and cover, then the connector can be configured simply, but if the connection portion is damaged due to deterioration over time or external force, the cover may fall off from the housing body
Solution Approach 1:
The engagement protrusions and engagement grooves are designed with specific local geometries that enhance the durability of the coupling. The engagement grooves are formed to accommodate and protect the engagement protrusions, creating a robust local structure that resists deterioration and external forces over time.
3Force
If tensile force is applied to the harness, then the connector can transmit force, but the force is mainly received by either the housing body or the cover, causing the coupling to misalign or detach
Solution Approach 1:
The engagement protrusions and engagement grooves are combined to form an integrated coupling mechanism. This merging of features allows the coupling to collectively receive and distribute tensile forces, preventing misalignment or detachment while maintaining the ability to transmit force effectively.
Data Source
Figure 1(a)~1(b)
Figure 2(a)~2(b)
Figure 3(a)~3(c)
AI summary
Provided is a connector housing with which integral coupling property of two members for clamping harness can be enhanced and the coupling is not prone to misalign or detach. In a connector housing 1 which clamps the harness between a housing body 10 and a cover 50 when they are coupled, a front frame portion 52 which is engaged to a front end of the housing body when the cover is coupled to the housing body is arranged at the front end of the cover 50, and a rear projecting piece 53 which is engaged to a rear end of the housing body when the cover is coupled to the housing body is arranged at the rear end of the cover.