Motor Assembly Socket Plug Integration for Mirror Drive
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Solution Overview
Problem
Conventional motor assemblies for outer mirror driving apparatuses require complex assembly processes due to preliminary connection of motors and circuit boards with lead wires and screws, leading to increased production costs and instability of the circuit board fixation, which can result in short-circuits during operation.
Innovation Solution
A motor assembly featuring a socket unit on the motor and a plug unit on the circuit board, supported by a flexible supporting member with plug stop projections that engage to prevent movement and stabilize the connection, eliminating the need for screws and reducing assembly complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If lead wires and screws are used to connect and fix the motor to the circuit board, then the connection is established, but the assembly process becomes complex and production efficiency decreases
Solution Approach 1:
The patent combines the motor and circuit board into an integrated unit where the circuit board is directly mounted on the motor housing. This merging eliminates the need for separate lead wires and screws, reducing assembly complexity while maintaining reliable electrical and mechanical connection through the integrated structure.
Solution Approach 2:
The motor housing serves multiple functions: it provides structural support, acts as the motor casing, and serves as the mounting surface for the circuit board. This multi-functionality eliminates the need for separate mounting components, simplifying the overall assembly while ensuring stable fixation.
2Reliability
If lead wires are connected by soldering and screws are used to fix the motor, then the connection is established, but the production cost increases due to increasing number of connecting parts
Solution Approach 1:
The integration of the circuit board directly onto the motor housing eliminates multiple connecting parts such as lead wires, soldering materials, and screws. This reduction in component count directly lowers production costs while maintaining reliable connections through the integrated design.
Solution Approach 2:
The patent extracts and eliminates unnecessary intermediate connecting components from the assembly. By removing lead wires and separate mounting screws, the design reduces the number of parts that need to be manufactured, stored, and assembled, thereby reducing production costs.
3Device complexity
If only one end of the circuit board is engaged to support it on the supporting member, then the assembly is simplified, but the circuit board is fixed in an unstable state
Solution Approach 1:
The circuit board is integrated directly with the motor housing, creating a unified structure where the board is supported at multiple points along its length. This merging provides distributed support that enhances stability while maintaining assembly simplicity through the integrated design.
Solution Approach 2:
The circuit board is mounted on the motor housing in a configuration that provides support across multiple dimensions, not just at a single point. This multi-point support distribution across the board's surface area enhances stability while keeping the assembly process simple.
Data Source
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AI summary
A motor assembly (7) includes a motor (24), a circuit board (25) on which a control circuit to control the motor and a plug unit (27) are mounted, and a supporting member (26) which supports the motor and the circuit board. The motor is provided with a socket unit (24d) in which the plug unit is fitted. The supporting member has a board supporting portion (30) to support the circuit board, a motor supporting portion (29) to support the motor, and a supporting member engagement portion (29a). The plug unit has a plug unit engagement portion (27, 27Ac) which is engaged with the supporting member engagement portion. The plug unit engagement portion is engaged with the supporting member engagement portion when the plug unit is fitted in the socket unit.