Keyboard Key Structure Buffer Layer Noise Reduction
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Solution Overview
Problem
The existing keyboard structures often produce abnormal sounds due to the supporting rod striking the base plate, which affects the stability and smoothness of keycap movement.
Innovation Solution
A key structure design that includes a base plate with connecting seats and notches, a thin film circuit assembly, and a supporting rod, where the supporting rod is connected between the keycap and the base plate, with a buffer layer or elastic contact assembly to absorb the impact and prevent direct contact with the base plate, thereby reducing noise.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the base plate and supporting rod are made of metal to provide sufficient structure strength, then the structure strength is improved, but the supporting rod is likely to strike the base plate and produce abnormal sound
Solution Approach 1:
The patent introduces a buffer layer as an intermediary component between the supporting rod and the base plate. This buffer layer absorbs the impact when the supporting rod moves, preventing direct metal-to-metal contact and the resulting abnormal sounds, while still allowing the metal components to maintain their structural strength.
Solution Approach 2:
The buffer layer is pre-installed at the location where the supporting rod may strike the base plate. This beforehand cushioning measure ensures that when the supporting rod moves during keyboard operation, the impact is already cushioned by the buffer layer, preventing the harmful sound before it occurs.
2Stability of the object's composition
If a supporting rod is disposed between the keycap and base plate to make lifting stable and smooth, then the stability of keycap movement is improved, but the supporting rod may strike the base plate to produce abnormal sound
Solution Approach 1:
The buffer layer serves as a mediator between the supporting rod and base plate, allowing the supporting rod to maintain its stabilizing function while preventing the harmful impact sound through the cushioning effect of the buffer material.
3Ease of operation
If the supporting rod is connected to the keycap and base plate to provide support, then the ease of operation is improved, but the supporting rod is likely to strike the base plate and produce abnormal sound
Solution Approach 1:
The buffer layer is pre-positioned to cushion the supporting rod before it can strike the base plate, ensuring that the ease of operation provided by the supporting rod structure is maintained while the harmful sound is prevented in advance.
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 design effectively absorbs the impact of the supporting rod, preventing it from striking the base plate and enhancing the stability and smoothness of keycap movement, thus reducing noise and improving user experience.
Implementation Method 1
a buffer layer or elastic contact assembly to absorb the impact and prevent direct contact with the base plate, thereby reducing noise
Data Source
AI summary
Provided is a key structure including a base plate having at least one connecting seat and at least one notch adjacent to a lower portion of the connecting seat; a keycap disposed above the base plate in a liftable manner; a thin film circuit assembly disposed on the base plate and located between the base plate and the keycap; and a supporting rod connected to the keycap and the base plate and located between the thin film circuit assembly and the keycap. An accommodating space formed by the notch extends from and communicates with a through hole of the connecting seat. The connecting seat protrudes out from an opening of the thin film circuit assembly. A vertical projection region of the notch on the base plate is located within a vertical projection region of the opening on the base plate. The invention also provides a keyboard module.