Shielded Connector Assembly With Parallel Front Fastening
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Solution Overview
Problem
Existing shielded connectors face difficulties in assembly workability due to the need for precise alignment of components, which complicates the integration of shielding members, housing, and electromagnetic shielding cover members, making handling and assembly challenging.
Innovation Solution
The shielded connector design includes a housing with a front opening covered by an inner housing, tubular electric wire insertion portions, terminals accommodated in L-shaped recesses, and shielding shells with parallel fastening members, allowing for easier assembly by positioning and fastening from a common direction, enhancing handling and workability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the accommodation recess portion of the second shell is accommodated in the press-fit protrusion portion of the first shell from the fastening direction, then the shielding members can be fastened together, but the accommodation portion is difficult to see and workability is poor
Solution Approach 1:
The patent inverts the conventional assembly approach by fastening the shielding members from the rear surface side opposite to the fastening member direction, rather than from the fastening direction. This allows the accommodation recess portion to be visible and accessible during assembly, significantly improving workability while maintaining proper fastening of the shielding members.
2Manufacturing precision
If the first shell and second shell are fastened together to the connection counterpart by the fastening member, then the relative positions are fixed, but the shielding members cannot be integrally fixed before assembly and handling is difficult
Solution Approach 1:
The patent applies preliminary action by providing a positioning structure that pre-establishes the correct relative positions of the first and second shells before fastening. The positioning projection and positioning recess engage in advance to align the shells, allowing them to be integrally handled during assembly while ensuring precise positioning when fastened to the connection counterpart.
3Manufacturing precision
If the press-fit projection portion is press-fitted into the press-fit recess portion to fix relative positions, then the housing and first shell are fixed, but the accommodation recess portion alignment becomes difficult when assembled to connection counterpart
Solution Approach 1:
The patent introduces a positioning recess portion as an intermediary element that mediates between the press-fit structure and the accommodation recess portion. This positioning recess receives and aligns the accommodation recess portion during assembly, ensuring proper alignment while maintaining the press-fit positioning of the housing and first shell, thereby reducing assembly complexity.
Data Source
AI summary
A shielded connector includes a housing having a front opening portion and an electric wire insertion portion, a terminal to be accommodated in a terminal accommodating portion of the housing and to be connected to a mating terminal, a connection terminal to be connected to an electric wire, a first shielding shell to cover a rear surface of the housing, a second shielding shell having a braid connection portion and a shell fixing portion to be connected to the first shielding shell, a first fastening member to fasten the housing to the first shielding shell, a second fastening member to fasten the connection terminal to the terminal, and a third fastening member to fasten the shell fixing portion to the first shielding shell. The first, second and third fastening members have fastening directions parallel to each other, and are fastened from a front surface side of the housing.