PCB Locating Pin Integration for Assembly Positioning
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Solution Overview
Problem
The challenge in manufacturing display modules is that varied printed circuit boards with different sizes and configurations are difficult to securely attach to a shared backboard without shifting, as traditional screwing methods can alter the board's orientation, and uniform backboards with locating pins are not adaptable for all boards.
Innovation Solution
The method involves manufacturing printed circuit boards with permanently disposed locating pins using surface mount technology, which are then temporarily fixed to a backboard with matching locating holes, eliminating the need for screws and ensuring precise positioning without displacement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If screws are used to secure the printed circuit board on the backboard, then the printed circuit board is firmly attached, but the orientation of the printed circuit board may be shifted during screwing
Solution Approach 1:
The patent applies preliminary action by temporarily fixing the printed circuit board to the backboard before screwing. This preliminary fixation prevents orientation shifts during the screwing process, ensuring positioning precision is maintained while still achieving firm attachment through the subsequent screw fastening
2Ease of manufacture
If uniform backboard locating pins are used, then the backboard can be standardized, but varied printed circuit boards with different sizes and configurations cannot share the same backboard
Solution Approach 1:
The patent applies segmentation by dividing the locating function into two parts: fixed locating pins on the standardized backboard and corresponding locating holes on individual printed circuit boards. This segmentation allows the backboard to remain uniform and standardized while each PCB can have its own customized locating hole pattern, enabling both standardization and adaptability
Solution Approach 2:
The patent inverts the traditional approach by placing locating features (pins on backboard, holes on PCB) rather than having all locating features on one component. This inversion allows the standardized backboard to provide fixed reference points while accommodating varied PCB configurations through corresponding holes
3Adaptability or versatility
If varied printed circuit boards are attached to a shared backboard, then design flexibility is improved, but the printed circuit boards cannot be securely attached without shifting
Solution Approach 1:
The patent applies preliminary action by temporarily fixing the printed circuit board to the backboard before final screw attachment. This preliminary fixation ensures the PCB remains stable and does not shift during the screwing process, maintaining both design flexibility for varied PCBs and reliability of secure attachment
Data Source
AI summary
A method for manufacturing a printed circuit board is disclosed, which comprises the following steps. A basic board having an upper surface and a bottom surface opposite to the upper surface is provided. A plurality of the electronic components temporarily disposed on the basic board is provided. At least one locating pin temporarily disposed on a place of the basic board is provided, in which the electronic components are not temporarily disposed on the place. Surface mount technology is used simultaneously to joint at least one locating pin and the electronic components on the basic board.