Coaxial Connector Housing Assembly With Thin Compressed Sealing
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Solution Overview
Problem
The integration of a connector housing with a rear cover in high-definition vehicle-mounted cameras faces challenges due to high snap feature and dimension requirements, leading to costly mold redesigns and increased sealing ring thickness, which limits the development of smaller, high-pixel cameras.
Innovation Solution
A connector housing assembly comprising a rear cover and housing, where the housing is separately formed, allowing for easier manufacturing and reduced size through injection molding, and sealing is achieved using a sealing ring compressed between the rear cover and housing, along with sealants to minimize space requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If cold forging is used to form the rear cover integrally with the connector housing, then manufacturing efficiency is improved, but manufacturing precision deteriorates due to difficulty in achieving high snap feature and dimension requirements
Solution Approach 1:
The connector assembly is divided into separate components: the rear cover and the connector housing are manufactured independently through cold forging, then assembled together. This segmentation allows each component to be optimized separately for both manufacturing efficiency and precision, avoiding the precision limitations of integral forming while maintaining high productivity through efficient cold forging processes.
2Reliability
If a sealing ring with thickness of 2 mm or more is used to achieve sealing between the outer terminal and rear cover, then sealing reliability is improved, but device volume increases requiring at least 3 mm or more of space in height direction
Solution Approach 1:
The patent employs a thin sealing ring that utilizes elastic deformation and compression between the rear cover and connector housing to achieve effective sealing. The flexible sealing ring can deform to fill gaps and maintain seal integrity with minimal thickness, eliminating the need for the 2-3 mm thick rigid sealing rings while preserving sealing reliability.
Solution Approach 2:
The sealing mechanism transitions from relying on sealing ring thickness to relying on compression force and elastic deformation parameters. By optimizing the compression between the rear cover and housing, the system achieves effective sealing with a much thinner sealing ring, reducing the overall connector height while maintaining seal reliability.
Data Source
AI summary
A connector housing assembly includes a rear cover and a housing. The rear cover has an outer peripheral wall and a rear end wall that enclose an accommodating chamber. The housing has a cylindrical portion and a flange portion formed at an end of the cylindrical portion. The flange portion is fixed to an outer side of the rear end wall by a fixing portion formed on the outer side of the rear end wall. An outer terminal of a connector is inserted into the cylindrical portion via a mounting hole formed in the rear end wall. The mounting hole is in communication with an inner cavity of the cylindrical portion.