Touch Pad Module Noise Reduction via Elastic Arm Film
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Solution Overview
Problem
Conventional touch pad modules produce noise due to the impact and rebound of elastomers against the frame, leading to a poor user experience.
Innovation Solution
A touch pad module incorporating a noise reducing film with an elastic arm structure that covers the elastomer, absorbing both the impact and recovery forces to minimize noise, while maintaining the click feeling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the elastomer is used to trigger click signals by pressing against the frame, then the touch pad functionality is achieved, but noise is generated due to impact and rebound
Solution Approach 1:
The patent introduces a noise reducing film as an intermediary component between the elastomer and the frame. This film includes an elastic arm structure that mediates the interaction between the elastomer and frame, absorbing impact forces and reducing noise while still allowing the elastomer to trigger click signals effectively.
Solution Approach 2:
The noise reducing film with its elastic arm structure serves as a cushioning element positioned beforehand between the elastomer and the frame. This cushioning structure absorbs the impact energy before it reaches the frame, preventing noise generation while maintaining the click signal functionality.
2Object-generated harmful factors
If the noise reducing film with elastic arm structure is added, then noise is reduced, but device complexity increases
Solution Approach 1:
The patent uses a flexible noise reducing film with thin elastic arm structures to achieve noise reduction. This thin film design provides the necessary cushioning function without adding significant structural complexity or bulk to the device.
Solution Approach 2:
The noise reducing film is segmented into multiple elastic arms that are distributed around the elastomer. This segmentation allows the film to effectively absorb impact forces from different directions while maintaining a simple overall structure that integrates easily into the existing touch pad design.
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
Effectively reduces noise generated by the elastomer's interaction with the frame without compromising the click sensation, enhancing user experience.
Implementation Method 1
the noise reducing film may absorb the impact force to reduce the noise of the elastomer contacting the frame
Implementation Method 2
the elastic arm structure and the elastic arms thereof can absorb the recovery force of the elastomer to reduce the noise of the elastomer rebounding
Data Source
AI summary
The present invention discloses a touch pad module, which includes a touch panel, an elastomer and a noise reducing film. The touch panel has a bottom surface. The elastomer is disposed on the bottom surface of the touch panel. The noise reducing film covers the elastomer. The noise reducing film includes a fixing portion, an opening and an elastic arm structure. The fixing portion is disposed on the bottom surface of the touch panel. The opening is located in the fixing portion. The elastic arm structure extends from the fixing portion to an inside of the opening and corresponds to the elastomer. The elastic arm structure includes a suspended portion and a plurality of elastic arms, and the elastic arms extend from the suspended portion to the fixing portion.