Keyboard Stabilizer Bar Noise Reduction via Buffering Sheath
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Solution Overview
Problem
Conventional keyboard devices generate unpleasant noise due to collisions between metallic stabilizer bar hook parts and the base plate, affecting user experience.
Innovation Solution
A keyboard device design featuring a buffering sheath made of soft material that covers the stabilizer bar, separating it from the metallic base plate and connecting structures, preventing direct contact and collision.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If metallic stabilizer bar hook parts are used to connect with the base plate, then the structural strength and stability are improved, but collision noise is generated affecting user experience
Solution Approach 1:
A buffering sheath made of soft material is introduced as an intermediary component between the metallic stabilizer bar hook parts and the base plate. This sheath prevents direct contact and collision between the metallic components, thereby eliminating the harmful collision noise while maintaining the structural connection and stability through the soft material's ability to absorb impact and provide continuous contact.
Solution Approach 2:
The material parameter of the connection interface is changed from hard metallic contact to soft material contact. By covering the hook parts with a soft material buffering sheath, the physical and acoustic properties of the interface are modified, transforming the collision-based noise generation mechanism into a cushioned contact that eliminates harmful sounds while preserving structural integrity.
2Object-generated harmful factors
If a buffering sheath is added to cover the stabilizer bar, then collision noise is reduced, but the device complexity increases
Solution Approach 1:
A flexible buffering sheath in the form of a thin-walled cylindrical structure is used to cover the stabilizer bar. This thin-film approach provides the necessary noise reduction functionality while minimizing the added complexity and volume. The cylindrical shape allows for simple integration around the existing stabilizer bar structure without requiring complex assembly procedures.
Solution Approach 2:
The buffering sheath is divided into multiple segments corresponding to different stabilizer bars (first stabilizer bar with first buffering sheath, second stabilizer bar with second buffering sheath). This segmentation allows for modular manufacturing and assembly, reducing the overall complexity by enabling independent production and replacement of individual buffering components rather than requiring a single complex integrated solution.
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 use of a buffering sheath effectively reduces noise by isolating the metallic components, enhancing the operational smoothness and reducing unwanted sound during keypress actions.
Implementation Method 1
a buffering sheath made of soft material that covers the stabilizer bar, separating it from the metallic base plate and connecting structures, preventing direct contact and collision
Data Source
AI summary
A keyboard device includes a key structure, a switch circuit board, a base plate and a buffering sheath. The key structure includes a keycap and a stabilizer bar. The stabilizer bar is connected with the keycap. The base plate includes a connecting structure. The stabilizer bar is penetrated through the connecting structure and connected with the base plate. The buffering sheath is arranged around the stabilizer bar to cover the stabilizer bar. The stabilizer bar and the base plate are made of metallic material. Since the stabilizer bar and the base plate are separated by the buffering sheath, the keyboard device is capable of reducing noise.