Wire Harness Clamp Interface for Anti-Slip Tube Attachment
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Solution Overview
Problem
The existing wire harnesses face difficulties in attaching clamps to vehicles due to the sliding and rotation of tubular members, especially when they have bent portions, which makes the attachment process challenging.
Innovation Solution
Incorporating a tape with a surface less likely to slide against the clamp, wound onto the tubular member, and using binding bands to secure the tape against protruding portions of the clamp, which enhances frictional force and restricts rotation, thereby improving the attachment process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the clamp directly holds the tubular member without additional structures, then the device complexity is reduced, but the tubular member slides and rotates against the clamp making attachment difficult
Solution Approach 1:
A tape member is introduced as an intermediary between the clamp and the tubular member. The tape member has a surface that increases frictional force against the clamp, preventing sliding and rotation of the tubular member during attachment. This mediator resolves the contradiction by enabling secure attachment without requiring complex direct coupling structures.
Solution Approach 2:
The surface properties of the tape member are specifically designed to have high friction characteristics against the clamp material. By changing the surface parameter (friction coefficient) of the intermediate layer, the system achieves reliable attachment while maintaining simple overall structure.
2Adaptability or versatility
If the tubular member has a bent portion, then adaptability to vehicle body shapes is improved, but turning force causes the tubular member to slide and rotate against the clamp
Solution Approach 1:
The tape member serves as a mediator that absorbs and resists the turning forces generated by bent tubular members. Its high-friction surface prevents these forces from causing sliding or rotation at the clamp interface, maintaining attachment stability while allowing the tubular member to follow vehicle body contours.
Solution Approach 2:
The tape member is preliminarily wrapped around the tubular member before clamp attachment. This preliminary action ensures that when the clamp is installed, the tape is already in position to prevent sliding and rotation, even when bent portions generate turning forces during installation or operation.
3Reliability
If the tape member has high frictional force against the clamp, then sliding suppression is improved, but the tape may be difficult to unwind or remove
Solution Approach 1:
The tape member exhibits different surface properties on different sides: one surface has high friction against the clamp for reliable sliding suppression, while the other surface has appropriate friction characteristics against the tubular member for easy winding and removal. This local differentiation resolves the contradiction between secure attachment and ease of installation/removal.
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
This solution effectively suppresses the sliding and rotation of tubular members, facilitating easier and more secure attachment of the wire harness to vehicles by applying sufficient frictional force and maintaining the fastening state through mechanical locking.
Implementation Method 1
a first tape member having a surface that is less likely to slide against the clamp than a surface of the first tubular member, wherein the clamp is brought into contact with the first tape member that is wound onto and fixed to an outer circumferential surface of the first tubular member
Data Source
AI summary
A wire harness including: a first electric wire; a first tube in which the first electric wire is housed; a clamp that holds the first tube; and a first tape having a surface that is less likely to slide against the clamp than a surface of the first tube, wherein the clamp is brought into contact with the first tape that is wound onto and fixed to an outer circumferential surface of the first tube, and is attached thereto.