Vehicle Door Mirror Assembly Fastening Direction Alignment
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Solution Overview
Problem
The existing vehicle door mirror device assembly process is complicated due to the lack of fixed fastening directions for the electric retraction unit and actuator, requiring multiple steps and reducing workability.
Innovation Solution
The electric retraction unit and actuator are fastened to the housing main body using screw members with aligned fastening directions, simplifying the assembly process by ensuring both units are secured in the same direction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the electric retraction unit and actuator are fastened to the housing main body using screw members with different fastening directions, then both units can be assembled onto the housing main body, but the assembly process becomes complicated with multiple steps and reduced workability
Solution Approach 1:
The housing main body is designed with asymmetric fastening hole arrangements that accommodate both the electric retraction unit and actuator with fastening directions aligned in the same direction. This asymmetric design allows both units to be fastened from the same side of the housing main body, eliminating the need to move the product between assembly steps and significantly improving workability while reducing assembly process complexity
2Reliability
If the electric retraction unit and actuator are assembled onto the housing main body in separate steps with product movement between steps, then both units can be securely fastened, but the assembly time and process complexity increase
Solution Approach 1:
The assembly process merges the fastening operations for both the electric retraction unit and actuator into a single step. By designing the fastening holes and screw member paths such that both units can be fastened in the same direction from the same side, the patent combines what would traditionally be separate assembly steps into one continuous operation, reducing assembly time while maintaining fastening reliability through proper structural design
Data Source
AI summary
A vehicle door mirror device includes a mirror housing that has as some of constituent elements thereof a housing main body having fixed thereto an actuator for driving the mirror so as to tilt the mirror in a fore-and-aft direction and a left-and-right direction, a support shaft that is standingly provided on a mirror base mounted on a front side door, and an electric retraction unit that is pivotably supported on the support shaft and is fixed to the housing main body while being housed within the mirror housing so as to exert power for pivoting the mirror housing around an axis of the support shaft between a retracted position and a raised position, wherein fastening directions for fastening members that fasten the electric retraction unit and the actuator to the housing main body are set in the same direction.