Circuit Board Positioning Block for Flexible Board Alignment
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Solution Overview
Problem
The use of positioning holes in circuit boards limits the area available for circuits, reducing the effective use area and requiring additional external interfaces for testing and debugging.
Innovation Solution
Incorporating a positioning block on the circuit board that is inserted into a positioning hole in the flexible board for alignment, allowing for precise soldering without the need for additional holes, and enabling the circuit board to be tested and debugged without extra interfaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a positioning hole is provided in the circuit board for alignment with the flexible board, then positioning accuracy is improved, but the use area of the circuit board is reduced
Solution Approach 1:
The positioning function is transferred from the circuit board plane to the flexible board side by using a positioning block that protrudes from the flexible board and inserts into a positioning hole in the circuit board. This dimensional shift allows the circuit board to maintain its integrity while achieving precise positioning through the flexible board's positioning structure.
Solution Approach 2:
The positioning hole is extracted from the circuit board and relocated to the flexible board as a positioning block. This extraction eliminates the need for holes in the circuit board, preserving its use area while maintaining positioning functionality through the inverted positioning structure.
2Manufacturing precision
If a positioning hole is provided in the circuit board, then positioning between boards is achieved, but the circuit board structure becomes more complex
Solution Approach 1:
The positioning structure is extracted from the circuit board and placed on the flexible board as a positioning block. This extraction simplifies the circuit board structure by eliminating holes and associated reinforcement features, while the positioning functionality is maintained through the flexible board's positioning block.
Solution Approach 2:
The positioning block on the flexible board serves as an intermediary element that provides positioning functionality without requiring modifications to the circuit board. This intermediary structure on the flexible board side achieves the positioning function while keeping the circuit board simple.
3Adaptability or versatility
If additional external interfaces are added for testing and debugging, then testing capability is improved, but device complexity increases
Solution Approach 1:
The positioning block on the flexible board is designed to serve multiple functions: it provides mechanical positioning between the flexible and rigid boards, and simultaneously serves as an external interface for testing and debugging. This multi-functionality eliminates the need for separate test interfaces, reducing device complexity while maintaining testing capability.
Solution Approach 2:
The positioning function and testing interface function are merged into a single structure - the positioning block. By combining these two functions into one element, the patent reduces the number of components and simplifies the overall device structure while maintaining both positioning accuracy and testing capability.
Data Source
Figure 1~2
Figure 3
AI summary
Embodiments of the present invention provide a circuit board and an electronic device. The circuit board includes a board body and a positioning block disposed on the board body, where the positioning block is inserted into a positioning hole in a flexible board; and when the flexible board is mounted on the circuit board, the positioning block is inserted into the positioning hole, to further implement positioning between the flexible board and the circuit board, so that the first pin on the circuit board is opposite to the second pin on the flexible board, so as to facilitate soldering between the first pin and the second pin. Compared with a manner of positioning the circuit board and the flexible board by providing a first positioning hole in the circuit board and a second positioning hole in the flexible board, placing a positioning plate with a positioning rod at a lower portion of the circuit board, and penetrating the positioning rod into the first positioning hole and the second positioning hole, opening of a hole in the circuit board can be avoided, and a circuit can be provided inside the circuit board corresponding to the positioning block, which does not affect the use area of the circuit board.