Intelligent Switch Key Structure for Smooth Press and Clear Feedback
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Solution Overview
Problem
Existing intelligent switches exhibit a strong sense of falling and large displacement during springback, leading to a rebound force jump and discomfort when pressed.
Innovation Solution
A wall intelligent switch and wireless intelligent switch design incorporating a reset portion and detection member that generate controlled reaction forces and displacements, with a reaction force less than 400 g and displacement difference of less than 2 mm, optimizing user experience by reducing the sticky feeling and improving smoothness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a conventional intelligent switch is used, then the switch can perform basic on-off control, but the springback produces strong rebound force jump and large displacement causing a strong sense of falling and discomfort to users
Solution Approach 1:
The patent applies dynamics by making the reset portion flexible rather than rigid, allowing it to deform elastically during key pressing and rebound. This dynamic behavior absorbs the rebound energy gradually, reducing the sudden force jump that causes discomfort. The flexible reset portion adapts its stiffness during the pressing cycle, providing a smoother force profile.
Solution Approach 2:
The patent changes the physical state of the reset portion from rigid to flexible, altering its mechanical properties. By selecting materials with appropriate elastic moduli and designing the reset portion with specific geometric parameters (thickness, length, cross-section), the rebound force characteristics are modified to reduce the sense of falling while maintaining adequate reset function.
2Ease of operation
If a conventional intelligent switch is used, then the switch structure is simple, but the springback displacement is large causing a strong sense of falling
Solution Approach 1:
The flexible reset portion dynamically deforms during key pressing, absorbing displacement through elastic deformation rather than rigid movement. This reduces the visible springback displacement of the key cap while maintaining the necessary reset function, creating a smoother pressing experience without increasing overall structure complexity.
Solution Approach 2:
The reset portion acts as an intermediary element between the key cap and the detection member. It mediates the force and displacement transmission, converting the direct rigid connection into a flexible coupling that reduces springback displacement while maintaining adequate detection trigger capability.
3Ease of operation
If the reset portion is made flexible to reduce rebound force, then user comfort improves, but the structure complexity increases
Solution Approach 1:
The patent achieves flexibility through parameter optimization of existing simple structures rather than introducing complex mechanisms. By adjusting the thickness, length, width, and material properties of the reset portion, adequate flexibility is obtained while maintaining a simple single-piece or minimally segmented structure, avoiding unnecessary complexity.
Solution Approach 2:
The reset portion is designed as a thin flexible element (sheet-like structure) that provides the necessary compliance through its geometry and material properties rather than through complex mechanical mechanisms. This approach achieves flexibility with minimal structural complexity, using elastic deformation of a simple component.
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 controlled reaction forces and reduced displacement enhance user comfort by minimizing the effort required for key pressing and providing clear feedback, thus improving the smoothness and feedback of the key press.
Implementation Method 1
the reset portion is configured for supporting the key to deform directly or indirectly in response to the pressing movement and generating a reset acting force to overcome the deformation
Implementation Method 2
the detection member may be provided for being triggered based on the displacement and generating a first rebound force against the displacement
Data Source
AI summary
The present application provides a wall intelligent switch, a wireless intelligent switch and a switch mounting frame, wherein the wall intelligent switch comprises a housing, a detection member, a wireless communication module, a reset portion and at least one key; the reset acting force cooperates with a first rebound force of the detection member so that when the key is at the first pressing position, the reaction force is F1; when the key is pressed from the first pressing position to the second pressing position, the reaction force of the key jumps from F1 to F2, where F2<F1<400 g; and the difference between the displacement of the key at the first pressing position and the displacement at the second pressing position is ≤2 mm. This enables the keys to give clear feedback to the user while improving the smooth degree of pressing.