Electronic Device Unit With Movable First Board For Precision Connection
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Solution Overview
Problem
In electronic device units, the attachment precision of a second board to a frame member is dependent on the precision of a first board, leading to potential misalignment and reduced precision in connection, especially when the first board's position is not accurately fixed.
Innovation Solution
The design includes a first board that is movable within restricted ranges by a housing hole and pins, allowing it to be easily aligned and attached to the frame member, while a second board is fixed with high precision using connectors and screws, independent of the first board's position.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the first board is made movable within a specific range to facilitate connection, then ease of connection is improved, but attachment precision of the first board deteriorates
Solution Approach 1:
The patent divides the connection system into two independent stages: first board connection (with movement capability) and second board connection (with high precision). By segmenting the attachment process, each board can be optimized independently - the first board for ease of connection and the second board for precision, resolving the contradiction between these two requirements
2Manufacturing precision
If the second board's position is made independent of the first board, then manufacturing precision of the second board is improved, but device complexity increases
Solution Approach 1:
The frame member serves as an intermediary element that provides a common reference basis for both boards. By using the frame member as the mediator, the patent achieves independent positioning of the second board without requiring complex additional positioning mechanisms, thus improving precision while avoiding excessive complexity
Data Source
AI summary
An electronic device unit includes a frame member, a first board that is retained so as to be capable of moving with respect to the frame member in a horizontal direction of the frame member within a range restricted by a movement restricting portion, a first connector provided to the first board, a second board that faces the first board in the horizontal direction and that is positioned with respect to and fixed to the frame member; and a second connector that is provided to the second board and that is connected to the first connector in the fixed state of the second board.