Dome Switch Button With Conductive Buffering Element
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Solution Overview
Problem
Conventional dome switch buttons require additional conductor lines for connection to a circuit board, leading to increased space occupation and complex installation, affecting circuit design and tactile feel.
Innovation Solution
A dome switch button design featuring a conductive buffering element that allows direct electrical connection to the circuit board's pads without additional conductor lines, reducing space usage and incorporating a buffering function to alleviate deformation forces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conductor lines are extended from the conductive piece to connect with the circuit board, then electrical connection is achieved, but the button area length and width increase
Solution Approach 1:
The patent merges the conductive piece with the button body by directly installing the conductive piece on the button surface, eliminating the need for separate conductor lines. This integration reduces the overall button area while maintaining electrical connection functionality.
Solution Approach 2:
The patent extracts and removes the conductor lines from the system by establishing direct electrical connection between the conductive piece and circuit board through alternative means, thereby reducing the button area occupied by conductive elements.
2Reliability
If conductor lines are extended from the conductive piece, then electrical connection is established, but the installation complexity increases
Solution Approach 1:
The conductive piece is merged with the button body as an integrated component, simplifying the installation process by reducing the number of separate parts that need to be assembled and connected.
Solution Approach 2:
The conductive piece serves multiple functions simultaneously: it provides mechanical structure, electrical connection, and direct mounting capability, eliminating the need for separate conductor lines and simplifying installation.
3Reliability
If conductor lines are extended from the conductive piece, then electrical connection is achieved, but the circuit board space is occupied
Solution Approach 1:
The conductive piece is merged with the button body, allowing direct electrical connection to the circuit board without requiring additional conductor lines that would occupy valuable circuit board space.
Solution Approach 2:
The conductor lines are extracted and removed from the system by establishing direct electrical connection between the conductive piece and circuit board, thereby freeing up circuit board space for other components.
4Productivity
If the dome-shaped elastic piece is deformed during depression, then electrical signal is generated, but the compact force may damage the conductive piece
Solution Approach 1:
The patent applies beforehand cushioning by designing the conductive piece with integrated buffering structure that absorbs and distributes the compact force during dome deformation, preventing damage to the conductive piece while maintaining signal generation capability.
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
Simplifies installation, reduces space occupation, maintains tactile feel, and extends the use life of the conductive piece by eliminating the need for extra conductor lines and providing a buffering function.
Implementation Method 1
The dome-shaped elastic piece has elastic deformability. While the button is depressed, in response to the elastic deformability of the elastic piece, the raised dome center portion of the elastic piece is subjected to deformation in the direction toward the circuit board.
Implementation Method 2
When the conductive piece 92 is triggered by the dome-shaped elastic piece 91 and electrically conducted to generate the electricity, the electricity flows to the electric pads 931 through the electric pads 931 and flows into the circuit board 93.
Data Source
AI summary
A dome switch button is installed on a circuit board. The dome switch button includes an elastic piece, a conductive piece and a buffering element. The elastic piece is located over the conductive piece. The buffering element is located under the conductive piece and electrically connected with the circuit board. When the elastic piece is subjected to elastic deformation to trigger the conductive piece, an electric signal is generated. The buffering element is electrically connected with the circuit board. Moreover, a first electric pad and a second electric pad of the circuit board are covered by the buffering element. The electricity from the first electric pad and the second electric pad of the circuit board can be transferred to the conductive piece through the buffering element. Consequently, the conductive piece can be electrically connected with the circuit board without the need of using additional conductor lines.