Wire Harness Flexible Shield Outer Tube Connection
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Solution Overview
Problem
The existing wire harnesses, such as those described in JP 2006-310474A, face difficulties in assembly due to the need to insert flexible shielding members into outlet holes and connect them to tube-shaped members, making the process cumbersome.
Innovation Solution
A wire harness design featuring metal tube-shaped members with flexible shielding members that enclose wire groups, where connectors at the ends of the flexible shields are connected to the outer circumference of the tube, eliminating the need for inserting into outlet holes, and using crimp rings or other coupling methods for secure attachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If flexible shielding members are inserted into outlet holes of tube-shaped members and connected inside, then reliable shielding connection is achieved, but assembly complexity and difficulty increase
Solution Approach 1:
Instead of inserting the flexible shielding member into the outlet hole and connecting it from the inside, the invention inverts the connection approach by having the connector extend through the outlet hole and connect to the tube-shaped member from the outside. This reversal simplifies the assembly process while maintaining reliable electrical connection for shielding.
Solution Approach 2:
The invention introduces a connector as an intermediary component that facilitates the connection between the flexible shielding member and the tube-shaped member. The connector extends through the outlet hole and provides a simplified interface for connection, reducing assembly complexity while ensuring reliable shielding connection.
2Reliability
If flexible shielding members are inserted into outlet holes and connected inside, then secure attachment is achieved, but assembly time and labor increase
Solution Approach 1:
The invention inverts the traditional assembly sequence by connecting the flexible shielding member to the tube-shaped member from the outside rather than from the inside. This allows for faster assembly while maintaining secure attachment through the connector that extends through the outlet hole.
3Ease of manufacture
If connectors extend through outlet holes to connect flexible shields to tube-shaped members, then assembly is simplified, but connector positioning precision must be maintained
Solution Approach 1:
The connector is designed to extend through the outlet hole in such a way that it self-aligns with the tube-shaped member during assembly. The connector's geometry and the outlet hole configuration work together to automatically position the connector correctly, reducing the need for high-precision manual positioning while maintaining assembly simplicity.
Data Source
AI summary
A wire harness, including: a plurality of wire groups, each including a plurality of wires; a tube made of metal into which the wire groups are inserted; and a plurality of flexible shields with a tube shape that each enclose one of the wire groups, wherein connectors provided at ends of the flexible shields are each connected to a portion of an outer circumferential surface of the tube in a circumferential direction of the tube.