Rotary Connector Cable Holding Structure for Axis Misalignment
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Solution Overview
Problem
Misalignment between the rotational axis of a rotary connector device and the steering rotational axis can lead to physical load and wear at the contact points between the lead block terminals and connector terminals during rotation, causing mechanical stress and potential failure.
Innovation Solution
Incorporating a cable holder that secures the cable in a position separate from the harness connector, reducing the transmission of forces and relative movement between the rotator-side connector and the harness connector, thereby minimizing wear and maintaining alignment even with misalignment between the rotational axes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the cable is allowed to move freely during rotation, then the ease of operation is improved, but wear and mechanical stress at connector contact points increases
Solution Approach 1:
A cable holder is introduced as an intermediary component between the cable and the rotator. The cable holder is rotatably coupled to the rotator and engages the cable, allowing the cable to move freely during rotation while preventing excessive movement that would cause wear at connector contact points. This mediator absorbs the mechanical stress and protects the connector terminals.
2Adaptability or versatility
If the rotational axis is misaligned with the steering rotational axis, then the adaptability to installation variations is improved, but physical load and wear at connector contact points increases
Solution Approach 1:
The cable holder acts as a mediator that decouples the mechanical connection between the cable and the rotator. It allows the rotational axis to be misaligned with the steering rotational axis while preventing the transmission of physical load and wear to the connector contact points, thus maintaining connector durability despite axis misalignment.
Solution Approach 2:
The cable holder provides beforehand cushioning by absorbing and distributing the mechanical forces that would otherwise be transmitted to the connector terminals. This protective mechanism is in place before any wear occurs, preventing damage from axis misalignment and rotational movements.
3Stability of the object's composition
If the cable is held rigidly at the connector, then the connector stability is improved, but the transmission of forces and wear increases
Solution Approach 1:
The cable holder is rotatably coupled to the rotator, introducing dynamic movement capability. This allows the cable holder to rotate with the rotator while maintaining engagement with the cable, providing stability to the connector assembly while preventing the transmission of forces that would cause wear at the contact points.
Data Source
AI summary
A rotary connector device includes a stator, a rotator, and a cable holder. The rotator includes a rotator-side connector detachably connectable to a harness connector provided to an end portion of a cable of a wire harness. The rotator is provided rotatably relative to the stator about a rotational axis. The cable holder is provided to the rotator to hold the cable in a state where the harness connector is connected to the rotator-side connector.