Layered Force Sensor Structure for Accurate Force Absorption
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Solution Overview
Problem
Conventional force sensors have limited opportunities for structural improvement, leading to reduced accuracy and effectiveness.
Innovation Solution
A force sensor design comprising a first and second sheet, electrode layers, an insulating elastomer, a bumper with a protruding body, and a bonding layer, where the bumper's protruding body applies external force to deform the insulating elastomer and bonding layer, allowing accurate force absorption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the structural configuration of the force sensor is maintained as conventional, then the manufacturing simplicity is preserved, but the measurement precision deteriorates
Solution Approach 1:
The force sensor is divided into multiple functional layers including first and second sheets, electrode layers, insulating elastomer, bonding layer, and bumper. Each layer performs a specific function: the sheets provide structural support, electrode layers enable electrical measurement, insulating elastomer absorbs force, bonding layer connects components, and bumper applies external force. This segmentation allows optimization of each component for its specific function, improving overall measurement precision while maintaining manufacturing simplicity through modular assembly.
2Measurement precision
If the insulating elastomer is added to absorb external force, then the force detection accuracy is improved, but the device complexity increases
Solution Approach 1:
The insulating elastomer serves as an intermediary component between the bumper and the electrode layers. It absorbs the external force applied by the bumper and transmits it to the electrode layers for measurement, while maintaining electrical insulation. This intermediary role allows the force to be accurately captured and measured without direct electrical contact, improving measurement precision. The bonding layer further integrates this component into the overall structure, managing the added complexity through systematic assembly.
3Force
If the bumper with protruding body is introduced, then the force application capability is enhanced, but the manufacturing complexity increases
Solution Approach 1:
The bumper is pre-formed with a protruding body that is integrally connected to the base body, creating a ready-to-apply force structure. This preliminary shaping allows the bumper to effectively deliver external force to the insulating elastomer without requiring additional assembly steps during sensor manufacturing. The protruding body's geometry is optimized to concentrate and direct the applied force, enhancing force application capability while the integral construction simplifies manufacturing by reducing the need for separate components and assembly operations.
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
Enhances the accuracy and sensitivity of force detection by enabling the insulating elastomer to absorb external forces effectively through the structural cooperation of the bumper and bonding layer.
Implementation Method 1
the insulating elastomer is elastically deformed
Implementation Method 2
the bonding layer is elastically deformed
Data Source
AI summary
A force sensor includes two sheets facing each other, two electrode layers respectively installed on inner sides of the two sheets an insulating elastomer sandwiched between the two electrode layers, a bumper disposed on one of the two sheets, and a bonding layer that connects the two sheets and that is arranged outside of the insulating elastomer. The bumper includes a base body and a bumper that is connected to and protrudes from the base body. When the force sensor receives an external force through the protruding body of the bumper, at least one of the two sheets is pressed by the base body to have an elastic deformation, so that the insulating elastomer is elastically deformed, and the bonding layer is elastically deformed.