Wiring Member Fixing Structure With Expandable Locking Protrusion
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Solution Overview
Problem
Existing techniques require insert-molding of wire harnesses, making it difficult to easily fix a wiring member to a plate-like member formed separately.
Innovation Solution
A fixing structure with a housing part, locking protrusion, and protrusion extension part that allows the locking protrusion to be extended and locked inside the plate-like member, using a sheet material with a through hole for the housing part and a tapered locking protrusion to secure the wiring member.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If insert-molding is used to fix the wire harness, then the wiring member is securely fixed to the plate-like member, but the manufacturing process becomes complex and time-consuming
Solution Approach 1:
The fixing structure is divided into separate components: a fixing member with a housing part and a locking protrusion, and a plate-like member with a through hole. This segmentation eliminates the need for insert-molding while maintaining secure fixation, as the locking protrusion can be independently inserted and locked into the through hole.
Solution Approach 2:
The through hole is pre-formed in the plate-like member before the locking protrusion is inserted. This preliminary action simplifies the assembly process by eliminating the need for complex insert-molding operations during manufacturing, thereby improving productivity while ensuring reliable fixation.
2Adaptability or versatility
If the wiring member is formed separately from the plate-like member, then manufacturing flexibility is improved, but the fixation process becomes more difficult
Solution Approach 1:
The locking protrusion is inserted into the through hole of the plate-like member, creating a nested structure where one component fits within another. This nesting mechanism provides a simple and effective fixation method for separately formed components, maintaining manufacturing flexibility while ensuring easy assembly.
3Ease of operation
If the locking protrusion is made tapered, then insertion into the plate-like member is facilitated, but the structural complexity of the fixing member increases
Solution Approach 1:
The locking protrusion features a tapered shape at its insertion end, providing localized geometric modification that facilitates easy insertion into the through hole. This local quality change (tapered geometry) maintains overall structural simplicity while significantly improving insertion ease during assembly.
Data Source
AI summary
A fixing structure of a wiring member includes a plate-like member provided in a vehicle, a wiring member disposed on a main surface of the plate-like member, and a fixing member fixing the wiring member to the plate-like member. The fixing member includes a housing part inserted into the plate-like member, a locking protrusion provided to extend outward from the housing part, and a protrusion extension part housed in the housing part and spreading the locking protrusion outside to lock the locking protrusion inside the plate-like member.