Wire Harness Connector Vacant Cavity for Shield Continuity Testing
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Solution Overview
Problem
In configurations where a shielding member is not electrically connected to a partner connector, existing technologies lack the ability to perform a continuity test on the shielding member due to the absence of a cavity for a drain wire in the connector.
Innovation Solution
A wire harness design that includes a tubular shielding member with a drain wire in electrical continuity, where the drain wire is drawn out and inserted into a vacant cavity of the connector, allowing for continuity testing even without a corresponding terminal in the partner connector.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a cavity for drain wire is not provided in the connector and drain wire is omitted, then the connector structure is simplified, but continuity test on shielding member becomes impossible
Solution Approach 1:
The connector is designed with a vacant cavity that serves dual purposes: it remains empty during normal operation to maintain simple structure, but can accommodate a drain wire when continuity testing is required, thus enabling the connector to serve both structural simplicity and testing functionality
Solution Approach 2:
A drain wire is introduced as an intermediary element that connects the shielding member to the vacant cavity in the connector, enabling continuity testing without requiring permanent structural changes to the connector or connection to partner connector
2Reliability
If drain wire is connected to terminal in partner connector, then continuity test can be performed, but electrical connection to partner connector is required
Solution Approach 1:
The continuity testing function is extracted from the requirement of partner connector connection. By providing a vacant cavity in the local connector that can receive the drain wire, the testing capability is localized and no longer depends on the partner connector's terminal availability
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables the performance of continuity tests on the shielding member by utilizing the drain wire inserted into the vacant cavity of the connector, ensuring effective testing without the need for electrical connection to a partner connector.
Implementation Method 1
a drain wire that is in electrical continuity with the shielding member, and is drawn out from an end portion of the shielding member on the connector side
Data Source
AI summary
A wire harness according to one aspect of the present disclosure includes: a first wire harness that includes a first electric wire, a first shielding member, and a first connector; a second wire harness that includes a second electric wire, a second shielding member, and a second connector; and a connection member that electrically connects a drain wire of the first shielding member and a drain wire of the second shielding member to each other. A drain wire drawn out from an end portion of the first shielding member on the first connector side is grounded. A drain wire drawn out from an end portion of the second shielding member on the second connector side is inserted into a vacant cavity of the second connector.