Touch Pad Module Adjustable Trigger Fixation
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Solution Overview
Problem
Electronic devices with touch pad modules face interference issues due to dimension and assembly tolerances during mass production and assembly, leading to key sticking problems.
Innovation Solution
A touch pad module design incorporating a switch, trigger element, fixing element, and elastic element, where the elastic element is positioned between the casing and trigger element to permanently drive the trigger element against the fixing element, allowing for external force activation and adjustable depth fixation to prevent interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the touch pad module is assembled in the casing with fixed positioning, then the assembly structure is simple and easy to manufacture, but the assembly tolerance is poor and causes key sticking due to dimension and assembly tolerances
Solution Approach 1:
The patent introduces a movable positioning structure where the positioning block can move relative to the casing along the moving direction. This dynamic positioning allows the trigger element to adjust its position automatically, compensating for dimension and assembly tolerances while maintaining a simple assembly structure. The movable design resolves the contradiction by providing adjustment capability without complex assembly procedures.
Solution Approach 2:
The patent changes the positioning parameter from fixed to variable by introducing a movable positioning block. The position of the positioning block can be adjusted along the moving direction to change the distance between the trigger element and switch, thereby compensating for tolerance variations and preventing key sticking while keeping the overall structure simple.
2Ease of manufacture
If the trigger element is fixed at a specific position, then the structure is stable and easy to manufacture, but the distance to the switch cannot be adjusted causing interference due to tolerances
Solution Approach 1:
The positioning block is designed to be movable rather than fixed, allowing it to adjust its position along the moving direction. This dynamic characteristic enables the structure to adapt to tolerance variations while maintaining manufacturing simplicity. The movable positioning block can be easily positioned and fixed at different locations to achieve the required distance adjustment.
Solution Approach 2:
The patent separates the positioning function from the fixed structure by introducing an independent movable positioning block. This segmentation allows the positioning block to be independently adjusted to compensate for tolerances, while the rest of the structure remains simple and easy to manufacture. The positioning block acts as an independent adjustment mechanism.
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
This design enhances assembly tolerance by allowing adjustable distance between the trigger element and switch, preventing key sticking and improving the functionality of the touch pad module and electronic device.
Implementation Method 1
The elastic element is leaned between the casing and the trigger element, and the elastic element permanently drives the trigger element to lean against the fixing element
Implementation Method 2
The touch pad module is subjected to an external force to make the trigger element and the switch to lean against each other, and compress the elastic element
Data Source
AI summary
A touch pad module suitable for assembling in a casing of an electronic device is provided. The touch pad module includes a switch, a triggering element, a fixing element and an elastic element. The switch is disposed in the casing. The triggering element is disposed in the casing and corresponds to the switch. The fixing element fixes the triggering element to the casing. The elastic element is leaned between the casing and the triggering element, and the elastic element permanently drives the triggering element lean against the fixing element. The touch pad module is subjected to an external force to make the triggering element and switch to lean against each other, and compress the elastic element. An electronic device including a casing and a touch pad module assembled in the casing is also provided.