Vehicle Electrical Box Arcuate Extension Wire Protection
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Solution Overview
Problem
The existing electrical connection boxes in vehicles are prone to damaging electric wires due to protrusions that can bend downward under external forces, causing potential damage to the wires passing through the insertion holes.
Innovation Solution
The electrical connection box design incorporates an extension portion that extends outward from the protrusion portion corresponding to the insertion hole, bending arcuately upward, which prevents the wire from being damaged even if the protrusion is bent downward, and is positioned to avoid contact with fingertips during installation, improving operability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a protrusion portion is provided on the cover body to cover the opening, then the cover can effectively seal the opening, but the protrusion portion may bend downward under external forces and damage the electric wire passing through the insertion hole
Solution Approach 1:
The extension portion is configured to extend in the vertical direction (upward) from the protrusion portion, creating a spatial separation between the extension portion and the wire in the vertical dimension. This dimensional arrangement allows the extension portion to deflect upward under external force rather than downward toward the wire, eliminating the wire damage risk while preserving the sealing function.
Solution Approach 2:
The extension portion is pre-configured with an upward bending shape that anticipates and counteracts the downward external forces that might otherwise damage the wire. By having the extension portion already oriented upward and designed to deflect further upward, the structure creates a preliminary protective action against the harmful downward force before any wire damage can occur.
2Reliability
If the extension portion is positioned to prevent wire damage, then wire protection is improved, but the structure becomes more complex
Solution Approach 1:
The extension portion is integrated directly into the protrusion portion of the cover body as a unified structure, rather than being a separate component. This merging of functions allows the cover body to simultaneously provide sealing (through the protrusion portion) and wire protection (through the extension portion) without increasing the number of parts or overall structural complexity.
Solution Approach 2:
The extension portion serves multiple functions: it acts as a structural element of the cover body, provides wire protection through its upward configuration, and maintains the sealing effectiveness of the opening. This multi-functionality allows wire protection to be added without requiring a dedicated separate protective component, thereby avoiding increased structural complexity.
Data Source
AI summary
An electrical connection box mounted on a vehicle and used for connecting a plurality of on-board loads to an on-board power supply, comprising: a box main body that is provided with an opening at a side and that accommodates an electrical component for the connecting; a cover body that covers the opening and that is provided with a protrusion portion protruding outward beyond the opening; an insertion hole that is provided a side wall of the box main body and that allows for insertion of an electric wire to be connected to the electrical component; and an extension portion that extends outward from a portion of the protrusion portion corresponding to the insertion hole and that bends arcuately.