Wire Harness Clip Anti-Rotation via Asymmetric Regulating Edge
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Solution Overview
Problem
Conventional wire harness fixing structures allow the locking member to rotate relative to the fixing film, leading to misalignment of the wire harness, potential interference with other vehicle components, and damage to the wires.
Innovation Solution
A wire harness design featuring a one-sided adhesive sheet with a folded part and a clip with a regulating edge portion, where the clip's elastic locking leg is inserted into the sheet hole, preventing rotation by abutting against the folded part and a step part formed by the adhesive sheet, ensuring the clip remains fixed in position.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the locking member is inserted into the sheet hole to fix the wire harness, then the wire harness can be attached to the fixed member, but the locking member may rotate in the sheet hole causing misalignment
Solution Approach 1:
The locking member incorporates a regulating edge portion with an asymmetric rectangular cross-section that fits into a corresponding asymmetric groove in the adhesive sheet. This asymmetric geometry prevents rotational movement while maintaining ease of attachment, as the regulating edge can be inserted in one direction but cannot rotate due to the non-circular cross-section.
Solution Approach 2:
The adhesive sheet serves as an intermediary element between the locking member and the wire harness. It includes a groove that receives the regulating edge portion of the locking member, thereby mediating the connection and preventing rotation. This intermediary structure allows the locking member to be easily attached while maintaining precise positioning.
2Adaptability or versatility
If the locking member is allowed to rotate in the sheet hole, then the wire harness may be arranged at an angle other than the predetermined attaching angle, but this causes interference with other components
Solution Approach 1:
The asymmetric regulating edge portion and groove configuration restricts the locking member to a single predetermined attaching angle. The geometry allows insertion but prevents rotation to other angles, thereby eliminating interference with other components while maintaining a fixed, optimized arrangement of the wire harness.
3Ease of operation
If the locking member rotates relative to the adhesive sheet, then the clip position changes, but this may cause damage to the electric wires
Solution Approach 1:
The regulating edge portion with rectangular cross-section and the corresponding groove create a anti-rotation mechanism that maintains wire integrity. The asymmetric geometry allows the locking member to be attached easily in the correct orientation but prevents rotation that would damage the electric wires, thereby ensuring reliability while maintaining ease of operation.
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
Prevents rotation of the clip relative to the adhesive sheet, maintaining the wire harness at a predetermined angle, avoiding interference with other components and ensuring precise positioning on the vehicle body.
Implementation Method 1
a clip (17) having a regulating edge portion (45) formed in a base plate (37) on which an elastic locking leg (43) inserted into the sheet hole (21) is raised
Implementation Method 2
a one-sided adhesive sheet (28), having an adhesive surface (23), formed with a sheet hole (21), and folded at a folded part (25) so that two parts of the adhesive surface (23) are adhered and fixed to each other
Implementation Method 3
the regulating edge portion (45) is sandwiched by the one-sided adhesive sheet (28) along the folded part (25)... the regulating edge portion which has a predetermined length abuts against the straight folded part of the one-sided adhesive sheet (28)
Data Source
AI summary
A wire harness (11) includes a one-sided self-adhesive sheet (28) which has a special adhesive layer (23) and is formed with a sheet hole (21), and which is folded at a folded part (25) so that two parts of the adhesive surface (23) are adhered and fixed, electric wires (15) which are sandwiched between the two parts of the special adhesive layer (23) along the folded part (25), and which have two end parts which are derived from the one-sided self-adhesive sheet (28), and a clip (17) which has a base plate (37), from which an elastic locking leg (43) which is inserted into the sheet hole (21) is raised, and which is formed with a regulating edge portion (45) which is sandwiched by the one-sided adhesive sheet (28) along the folded part (25).