Wire Harness Fixing Structure Without Pre-Formed Mounting Holes
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Solution Overview
Problem
The existing methods for fixing a wire harness to a mounting object, such as a roof lining, often require forming a hole for a clamp, which may not be suitable for all mounting objects and increase manufacturing processes when using adhesive agents like pressure-sensitive adhesive tapes or hot-melt materials.
Innovation Solution
A wire harness fixing structure that includes a plate-like member with multiple layers of varying hardness and a fixing member with a through locking piece that can pass through the plate-like member without a pre-formed hole, utilizing a regulation piece and column to lock the locking piece in place, allowing for secure attachment without exposing the locking piece.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a clamp is used to fix the wire harness, then the fixing strength is improved, but the mounting object requires pre-formed holes which increases manufacturing complexity and may not be suitable for all mounting surfaces
Solution Approach 1:
The invention extracts the hole-forming operation from the mounting process by designing a clamp that attaches to the surface without requiring pre-formed holes. The clamp uses its own structure (protrusions fitting into grooves, elastic deformation) to create the fixing connection directly on the mounting surface, eliminating the need for separate hole formation steps.
Solution Approach 2:
The clamp is divided into functional segments: a body portion for attachment, protrusions for engaging the mounting surface, grooves for receiving the protrusions, and an elastic portion for providing locking force. This segmentation allows each part to perform its specific function independently, enabling secure fixing without pre-formed holes.
2Adaptability or versatility
If adhesive agents like pressure-sensitive adhesive tapes or hot-melt materials are used to fix the wire harness, then the suitability for various mounting objects is improved, but the number of manufacturing processes increases
Solution Approach 1:
The invention replaces the adhesive-based mechanical system with a purely mechanical clamp structure. Instead of using adhesive agents that require application, curing, and bonding processes, the clamp uses elastic deformation, friction, and geometric interlocking (protrusions in grooves) to achieve fixing, thereby reducing manufacturing process complexity while maintaining versatility.
Solution Approach 2:
The clamp utilizes changes in physical parameters, specifically elastic deformation of the clamp material, to achieve fixing. The elastic portion deforms during installation and then maintains constant locking force through its recovery tendency, providing a simple yet versatile fixing mechanism that adapts to different mounting surfaces without requiring additional processes.
3Reliability
If the through locking piece passes through the plate-like member, then the fixing reliability is improved, but the locking piece may be exposed indoors which is not appropriate for certain mounting objects
Solution Approach 1:
The invention addresses the exposure problem by transitioning from a single-dimension through-hole approach to a multi-dimensional attachment strategy. The clamp uses protrusions that extend in one direction to engage the mounting surface, while the grooves and elastic portion provide locking in perpendicular directions. This multi-dimensional engagement achieves reliable fixing without requiring the locking piece to pass through to the other side, preventing exposure.
Solution Approach 2:
The groove structure acts as a nested containment for the protrusions, holding them in place without requiring them to extend through the entire thickness of the plate-like member. The elastic portion nests around the protrusions, providing frictional locking and preventing disengagement, thereby securing the wire harness reliably while keeping the locking mechanism contained within the mounting surface.
Data Source
AI summary
A wire harness fixing structure includes a plate-like member including a first layer and a second layer softer than the first layer, an electrical wire disposed along the plate-like member, and a fixing member attached to the electrical wire to fix the electrical wire to the plate-like member. The fixing member includes: a through locking piece formed to be able to pass through the first layer and locked to the first layer while passing through the first layer, a regulation piece provided with a space between the regulation piece and the through locking piece to stop the through locking piece from passing through a surface of the plate-like member, and a column connecting the through locking piece and the regulation piece.