Mechanical Keyboard Button Structure with Scissor Mechanism
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Solution Overview
Problem
Traditional mechanical keyboard structures are not suitable for thinner notebook keyboards, as they fail to provide adequate corner hand feeling and function, and their mechanical shaft design is limited to thicker desktop or externally-connected keyboards.
Innovation Solution
A mechanical keyboard button structure comprising a base plate, circuit board, mechanical switch, and keycap, where the mechanical switch includes a supporting plate with a pair of scissors and a switch spindle, an elastic mechanism with first and second spring pieces, and a sliding block, allowing for stable operation and improved hand feeling, suitable for keyboards with shorter strokes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If traditional mechanical keyboard structure with sleeve mode is used, then mechanical strength and stability are improved, but keyboard thickness increases and cannot be applied to notebook keyboards
Solution Approach 1:
The mechanical switch is divided into separate functional modules: the supporting plate with scissor mechanism provides structural support and stability, while the switch spindle handles the switching function. This segmentation allows each component to be optimized independently, enabling the use of a compact scissor mechanism instead of a bulky sleeve structure.
Solution Approach 2:
The switch spindle is inserted through the scissor mechanism, with the elastic mechanism nested within the supporting plate structure. The first and second spring pieces are positioned within the connecting portion, creating a compact nested arrangement that reduces overall thickness while maintaining mechanical strength.
2Ease of operation
If traditional mechanical keyboard structure is used, then hand feeling is improved, but device complexity and unsuitability for thin keyboards increase
Solution Approach 1:
The supporting plate serves multiple functions: it provides structural support, houses the elastic mechanism, guides the switch spindle motion, and integrates the scissor mechanism for lateral stability. This multi-functionality reduces the need for separate components, simplifying the overall structure while maintaining excellent hand feeling characteristics.
Solution Approach 2:
The scissor mechanism and switch spindle are combined into an integrated assembly where the scissor pins connect the supporting plate to the keycap, and the switch spindle passes through the scissor mechanism. This merging of functions into a unified structure reduces component count and simplifies assembly while preserving mechanical feedback quality.
3Length of stationary object
If thinner keyboard design is implemented, then portability is improved, but corner hand feeling and function deteriorate
Solution Approach 1:
The scissor mechanism introduces a lateral dimension to the traditionally axial switch structure. By using the scissor pins to provide lateral support and stability, the design achieves compact thickness without sacrificing corner key performance, as the scissor mechanism distributes forces across multiple dimensions rather than relying solely on vertical travel.
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
The solution provides a stable and responsive mechanical keyboard button structure with improved hand feeling and function, enabling thinner and lighter designs, and allows for individual key repair without replacing the entire circuit, enhancing usability and market applicability.
Implementation Method 1
an elastic mechanism is arranged between the switch spindle and the connecting portion; the connecting portion is internally provided with a first spring piece and a second spring piece for achieving the switch function
Data Source
AI summary
The invention discloses a mechanical keyboard button structure including a base plate, a circuit board, a mechanical switch and a keycap, wherein the base plate, the circuit board, the mechanical switch and the keycap are connected in order from bottom to top; the mechanism switch is used for guiding the keycap to move up and down and converting a pressure of the keycap into a switch signal to transmit to the circuit board to communicate a circuit; the mechanical switch includes a supporting plate and a switch spindle arranged on the supporting plate and further includes a pair of scissors, the upper portion of the pair of scissors is fixed with the bottom surface of the keycap, while the lower portion is fixed with the supporting plate, and the switch spindle passes through the pair of scissors and supports against the bottom surface of the keycap. According to the invention, the mechanical axle structure is combined with the scissor structure, so that the button is supported more stably, the service life is long, and the corner has both better hand feeling and function; second, the structure can be used for the keyboard with a shorter stroke, so that the keyboard is thinner and lighter and is more widely applied in the market; at last the whole circuit does not need to be replaced when the trigger circuit below a single key is damaged, and the single button can be repaired and replaced.