Universal Cover Member With Sliding Claws For Circuit Board Shielding
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Solution Overview
Problem
Conventional wiring board covers are specific to each type of circuit board, limiting productivity and increasing manufacturing costs due to the need for custom designs and the use of beam members that restrict soldering areas.
Innovation Solution
A cover member with first and second claws that can be slid onto a wiring board to position a component's body portion within a hole, allowing for the use of a single cover member across different circuit board types, eliminating the need for beam members and enabling flexible component placement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional wiring board cover is fixed to the outer peripheral edge of a wiring board and shaped to cover only a specific portion, then the shielding function is achieved, but the cover must be custom-designed for each circuit board type, lowering productivity and raising manufacturing costs
Solution Approach 1:
The cover member is designed with a universal structure that can be used across different circuit board types. The L-shaped configuration with first and second claws allows the same cover member to shield different portions of various circuit boards, eliminating the need for custom-designed covers for each board type and thereby improving productivity while maintaining the shielding function.
2Reliability
If a conventional wiring board cover is shaped to cover only a specific portion, then the shielding function is achieved, but a thin rib-shaped beam member must be disposed on the wiring board to hold the cover, restricting soldering areas
Solution Approach 1:
The beam member is extracted and eliminated from the design. Instead of using a separate beam member to hold the cover, the cover itself is designed with integrated claws that directly engage with notches on the circuit board. This removes the beam member that would otherwise occupy soldering space, thereby increasing the available soldering area while maintaining the shielding function.
3Reliability
If a conventional wiring board cover is shaped to cover only a specific portion, then the shielding function is achieved, but component placement is limited to positions dictated by the cover shape
Solution Approach 1:
The cover member design enables dynamic adaptability in component placement. The L-shaped configuration with adjustable claws allows the same cover to accommodate components at different positions on different circuit board types. The cover can be positioned and secured at various locations, providing flexibility in component placement while maintaining effective shielding.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution allows for the use of a universal cover member across various circuit board configurations, reducing manufacturing costs and enhancing the flexibility of component placement on the board.
Implementation Method 1
The cover member is held on the wiring board, by sliding the cover member relative to the wiring board in a direction along a component mounting surface of the wiring board
Implementation Method 2
Flow soldering is a method for pressing the wiring board from a side where the wiring is partially exposed against molten solder in an injected state to achieve soldering between an electrode terminal and wiring
Data Source
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AI summary
The present disclosure provides a method for manufacturing a circuit board that includes a wiring board that has a hole in which a body portion of a component is disposed in an inserted state. According to this manufacturing method, either a first claw or a second claw is inserted through a notch formed by notching an edge of the hole. The first claw and the second claw are so provided as to project outward from a wall portion of a cover member that covers the body portion of the component from a soldering surface side. The cover member is held on the wiring board, by sliding the cover member relative to the wiring board in a direction along a component mounting surface of the wiring board to position the edge of the hole between the first claw and the second claw provided on a surface of the wall portion identical to a surface on which the first claw is provided. The body portion is inserted into the hole, and an electrode terminal of the body portion is disposed on the wiring board. Solder is applied by flow soldering to the wiring board on which the cover member is held. The cover member is detached from the wiring board, by sliding the cover member relative to the wiring board to which solder has been applied to shift the first claw from the component mounting surface side to the soldering surface side with the first claw passing through the notch.