Fingerprint Module Button Assembly with Resilient Fixing Element
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Solution Overview
Problem
The existing fingerprint modules with buttons face challenges in simplifying assembly and testing the hand feeling of pressing the fingerprint button before assembly, requiring a complex structure and many parts, which complicates production and meets project requirements poorly.
Innovation Solution
A fingerprint module design that integrates a fingerprint component, button component, and support using a resilient fixing element, allowing hand feeling testing before assembly, with the button component mounted using SMT technology and the support fastened to device covers for simplified assembly and reduced parts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a conventional fingerprint button structure is used, then the button can be assembled into the device, but the structure becomes complex with many parts and complicated assembly process
Solution Approach 1:
The patent merges the button component and fingerprint component into a single integrated fingerprint module. The button component is directly mounted on the fingerprint component using SMT technology, eliminating the need for separate assembly steps and reducing the number of parts. This integration directly addresses the contradiction by simplifying the structure while maintaining manufacturability.
Solution Approach 2:
The support component serves multiple functions: it provides mechanical support for the fingerprint module, acts as a reference for hand feeling testing, and facilitates assembly to the device housing. This multi-functionality reduces the need for additional components, thereby simplifying the overall structure while maintaining ease of manufacture.
2Reliability
If a conventional fingerprint button structure is used, then the button can be assembled, but hand feeling testing cannot be performed before assembly
Solution Approach 1:
The patent enables hand feeling testing to be performed on the integrated fingerprint module before it is assembled into the final device. The support component provides a stable reference structure that allows testers to evaluate the button's tactile feedback and hand feeling in advance. This preliminary testing capability improves reliability by identifying issues before assembly, while the integrated design ensures this testing can be done quickly without adding significant time loss.
3Productivity
If multiple separate components are used, then each component can be manufactured independently, but the quantity of parts increases and assembly becomes more complex
Solution Approach 1:
The patent combines multiple components (button component, fingerprint component, and support) into a single integrated fingerprint module that can be assembled in one step. The button component is directly mounted on the fingerprint component, and the entire module is then assembled to the device housing, reducing the number of assembly steps from multiple separate component assemblies to a single module assembly operation. This significantly improves productivity while reducing the quantity of parts that need to be handled.
4Ease of manufacture
If a complex structure with many parts is used, then the fingerprint module can be assembled, but the assembly process requires more related parts and longer structure chain
Solution Approach 1:
The patent integrates the button component and fingerprint component into a single module, eliminating the need for separate assembly of these components. The integrated structure reduces the number of parts from multiple separate components to a single fingerprint module, thereby simplifying the assembly process and improving ease of manufacture.
Solution Approach 2:
The support component is designed to serve multiple purposes: providing mechanical support, enabling hand feeling testing, and facilitating assembly to the device housing. This multi-functionality reduces the need for additional specialized components, thereby reducing the overall number of parts while maintaining assembly simplicity.
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 simplifies assembly, reduces parts needed, allows for pre-assembly hand feeling testing, and enhances waterproof sealing and static protection, resulting in a lighter, thinner electronic device with reduced assembly costs.
Implementation Method 1
the resilient fixing element deforms, the gap becomes smaller, and the button component comes in contact with the support
Data Source
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Figure 3~4
AI summary
This application provides a fingerprint module, including a fingerprint component, a button component, a support, and a resilient fixing element. The button component is fastened to a lower surface of the fingerprint component. The resilient fixing element is disposed on the lower surface of the fingerprint component and is located between the fingerprint component and the support, the resilient fixing element surrounds the button component, and the resilient fixing element resiliently connects the fingerprint component and the support. There is a gap between the button component and the support. When the fingerprint component is pressed, the resilient fixing element deforms, the gap becomes smaller, and the button component comes in contact with the support. This application further provides an electronic device. In this application, the fingerprint component and the button component are connected to the support by using the resilient fixing element, so that assembly in a production line is simplified and a hand feeling of the fingerprint module can be tested before the assembly.