Circuit Board Mounting Structure for Wire-Safe Screw Fastening
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Solution Overview
Problem
Existing circuit board mounting methods face challenges in securely attaching boards to a mounting surface along an up-down direction without causing damage or pinching of electric wires, particularly when using screws.
Innovation Solution
A circuit board mounting structure that incorporates a hook and rotation restricting portion to support and secure the board, with a hanging hole and screw insertion holes, allowing for easy alignment and screw fixation while preventing wire pinching.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a circuit board is fixed to a mounting surface by a plurality of screws, then the circuit board can be securely attached, but the circuit board may fall or rotate during the fastening process
Solution Approach 1:
The hook is inserted into the hanging hole before the screws are fastened to preliminarily support the circuit board in the correct position. This preliminary action prevents the circuit board from falling or rotating during the subsequent screw fastening process, enabling secure attachment while maintaining ease of operation.
2Ease of operation
If a hook is provided on the mounting surface to support the circuit board, then the circuit board can be held in position, but the structure becomes more complex
Solution Approach 1:
The hook is integrated as a single piece with the mounting surface, combining the support function with the existing mounting structure. This merging approach provides effective position holding while minimizing additional complexity, as the hook is formed as one piece rather than separate components.
3Adaptability or versatility
If wire harnesses are wired through the circuit board, then electrical connections can be established, but the wires may be pinched or damaged during mounting
Solution Approach 1:
The circuit board is preliminarily positioned and supported by the hook before the screws are fastened. This preliminary positioning ensures that the wire harnesses, which are routed through the circuit board, are not pinched or damaged during the mounting process, while still allowing electrical connections to be established.
4Manufacturing precision
If the circuit board is aligned in the up-down direction for mounting, then accurate positioning can be achieved, but the mounting process becomes more difficult
Solution Approach 1:
The hanging hole and hook configuration allows the circuit board to self-align during the mounting process. When the circuit board is brought close to the mounting surface, the hook automatically engages with the hanging hole to support the correct portion of the board, enabling accurate positioning without requiring complex alignment procedures.
Data Source
AI summary
A circuit board has a first side and a second side that form both edges in a first direction, and a third side and a fourth side that form both edges in a second direction. The circuit board has a hanging hole and screw insertion holes. The hanging hole is formed in a portion of an edge portion along the first side of the circuit board near the third side. A mounting portion has a hook, fastening holes, and a rotation restricting portion. The hook is inserted into the hanging hole. The rotation restricting portion restricts the rotation of the circuit board. A dimension of the hanging hole in the first direction is larger than an up-down direction of the hook, and wire harnesses are wired from the mounting portion side via the outer sides of the third side and the fourth side of the circuit board.