Wire Harness Protector Integrating Leaf Spring and Electric Wire Routing
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Solution Overview
Problem
Conventional wire harness configurations for electric components in vehicles, such as sunroofs and slide doors, require complex workspaces and multiple fixing methods for electric wires, leaf springs, and exterior members, leading to complicated assembly processes.
Innovation Solution
A wire harness design featuring a flexible electric wire, an elastic leaf spring member, a flexible exterior member, and a protector with a routing space, lid portion, and protrusions that collectively hold and secure the components, simplifying the fixing process by integrating the components along an axial direction and using protrusions to lock the exterior member.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate fixing methods are used for each component (electric wire, leaf spring, exterior member), then each component can be securely fixed, but the work becomes complicated and requires multiple workspaces
Solution Approach 1:
The patent combines multiple fixing functions into a single integrated holder structure. The holder includes a body portion with multiple types of fixing portions: a first fixing portion for electric wires, a second fixing portion for leaf springs, and a third fixing portion for exterior members. This merging of separate fixing operations into one unified structure resolves the contradiction by maintaining secure fixing for each component while eliminating the need for multiple separate workspaces and procedures.
Solution Approach 2:
The holder is designed as a universal fixing structure that can simultaneously accommodate and secure different types of components (electric wires, leaf springs, exterior members) through its multi-functional fixing portions. Each fixing portion is specifically designed for its target component type, yet all are integrated into one holder body, allowing a single operation to perform what previously required multiple separate fixing operations.
2Reliability
If multiple workspaces are provided for different fixing methods, then each component can be fixed properly, but the work space requirement increases and the process becomes more complex
Solution Approach 1:
The patent merges multiple workspace requirements into a single integrated holder structure. Instead of providing separate workspaces for fixing electric wires, leaf springs, and exterior members, the holder consolidates all these fixing operations into one compact structure with multiple fixing portions, thereby reducing the total workspace area required while maintaining proper fixation for each component.
Solution Approach 2:
The holder structure employs a nested arrangement where multiple fixing portions are integrated within a single holder body. The first, second, and third fixing portions are nested within the holder structure, allowing each component type to be fixed in a compact, space-efficient manner rather than requiring separate distributed workspaces.
Data Source
AI summary
A wire harness includes: an electric wire; a leaf spring member; an exterior member; and a protector integrally holding an end portion of the exterior member and a portion of the electric wire and the leaf spring member led out from the end portion of the exterior member. The protector includes a protector main body having a routing space portion in which the electric wire, the leaf spring member, and the exterior member are routed along an axial direction, a lid portion attached to the protector main body to close the routing space portion, a protrusion portion protruding from the protector main body toward the lid portion and sandwiching a part of the electric wire between the protrusion portion and a second fitting stand portion of the lid portion, and a plurality of first protrusions and second protrusions locking the exterior member.