Windshield Mirror Support Harness Routing for Clear Front Visibility
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Solution Overview
Problem
The challenge is to maintain a clear field of view for vehicle occupants while suppressing the total vehicle height to improve merchantability and reduce air resistance, as existing auxiliary devices on the windshield obstruct the occupant's view due to their positioning near the head.
Innovation Solution
An auxiliary structure for the vehicle windshield that includes a bracket fixed to the windshield glass, a mirror support structure, electronic devices, wire harnesses routed through a mirror support columnar portion, and a harness cover, allowing the wire harnesses to be routed linearly and reducing the obstruction of the view by minimizing the width of the auxiliary cover.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the wire harness is routed behind the auxiliary cover to the front header, then connection is achieved, but the auxiliary cover width increases which obstructs the field of view
Solution Approach 1:
The wire harness routing is changed from a horizontal path behind the auxiliary cover to a vertical path through the opening in the mirror support columnar portion. This dimensional change allows the wire harness to pass through the mirror support structure rather than extending behind the auxiliary cover, enabling a narrower auxiliary cover design that reduces field of view obstruction while maintaining reliable connection
Solution Approach 2:
The mirror support columnar portion acts as an intermediary structure that facilitates wire harness routing. By providing an opening in the mirror support columnar portion, the wire harness can pass through this intermediate structure to reach the front header, eliminating the need for the auxiliary cover to extend backward and reducing its width to minimize obstruction
Data Source
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AI summary
[Problem] An object of the invention is to provide an auxiliary structure for a vehicle windshield capable of securing a field of view of an occupant on a front seat even when a total vehicle height is suppressed. [Solution] An auxiliary structure for a vehicle windshield includes: a mirror support structure 20 that supports a rear-view mirror 5; a plurality of electronic devices (a rain sensor 32 and a communication antenna 33) aligned in a vehicle width direction; a plurality of wire harnesses (a sensor wire harness 43 and an antenna wire harness 44) extending from the electronic devices; an auxiliary cover 60 that covers the mirror support structure 20 and the electronic devices; and a harness cover 70 that accommodates a plurality of wire harnesses. The mirror support columnar portion 21 of the mirror support structure 20 has an opening 21a that penetrates in a vehicle front-rear direction. The plurality of wire harnesses are routed from a vehicle front side of the mirror support columnar portion 21 to a vehicle rear side of the mirror support columnar portion 21 through the opening 21a.