Key Switch Balance Bracket Assembly for Stable Corner Pressing
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Solution Overview
Problem
Existing key switches experience poor pressing balance and stability, often resulting in jamming issues, especially when pressing at corners due to structural mismatches and lack of coordination in internal interactions.
Innovation Solution
A key switch design featuring a pressure balance assembly with balance brackets and an elastic member, such as a tension spring, that allows for balanced force distribution and flexible movement, enhancing the pressing stroke and feel by counteracting component forces and providing elastic restoring force.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional key switch structure is used, then device simplicity is maintained, but pressing balance and stability deteriorate causing jamming
Solution Approach 1:
The key switch is divided into multiple functional components: balance bracket A, balance bracket B, elastic member, pressing component, and conduction component. Each part has a specific function, and their coordinated interaction achieves pressing balance while maintaining reasonable structural complexity
Solution Approach 2:
The balance bracket A and balance bracket B form a counterbalance mechanism that offsets forces during key pressing. The elastic member provides restoring force to counteract the pressing force, ensuring the key cap returns to its original position and preventing jamming
2Ease of operation
If corner pressing is performed in traditional structure, then all key positions are covered, but pressing smoothness deteriorates due to structural limitation
Solution Approach 1:
The balance brackets are positioned asymmetrically relative to the key cap corners, creating optimized force distribution for corner pressing. This asymmetric arrangement allows smooth operation at all key positions including corners without requiring excessive structural complexity
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 significantly improves pressing balance and stability, eliminating jamming and enhancing the overall pressing feel by ensuring coordinated internal structure function and increased pressing stroke through balanced force distribution and elastic restoring forces.
Implementation Method 1
an elastic member connected between the balance bracket A and the balance bracket B
Implementation Method 2
the elastic member is a tension spring
Data Source
AI summary
A key switch with pressure balance function, including a base, a key cap and a press balance assembly including a balance bracket A and a balance bracket B. Both of the balance bracket A and the balance bracket B are in a U-shaped structure, including a transverse balance portion and two longitudinal balance portions. Each end of the transverse balance portion is provided with an inserting shaft, and corners of a lower end surface of the key cap are provided with slots for inserting the inserting shaft. An insertion block is arranged on the longitudinal balance portion; the base is provided with a mounting arm having a socket; the insertion block is inserted into the socket. Each transverse balance portion is provided with a hook hole; the balance bracket A and the balance bracket B are connected by an elastic member hooking the hook holes.