Button Switch Assembly With Stop Plate for Stable Pressing
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Solution Overview
Problem
Existing button structures in electronic devices are not stable, leading to failure over time and affecting user experience due to their fixed nature.
Innovation Solution
The electronic device incorporates a middle frame with a mounting slot and button slot, a switch member with a circuit board and switch, and a fixing member with a stop plate that limits the switch member's movement, ensuring it remains secure and functional even after long-term use or accidental drops.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If button structures are simply fixed in electronic devices, then the device complexity is reduced and ease of manufacture is improved, but the assembly stability deteriorates and reliability worsens over long-term use
Solution Approach 1:
The button structure is divided into multiple components: a button body, a pressing member with a pressing part and pushing part, a switch member with a circuit board and switch, and a fixing member with a fixing plate, engaging plate, and stop plate. This segmentation allows each component to perform its specific function and be manufactured independently, then assembled together to achieve both ease of manufacture and high reliability through proper positioning and fixing mechanisms.
Solution Approach 2:
The fixing member is pre-assembled with the switch member, and the stop plate is positioned in advance to limit the movement range of the circuit board. The pushing part is pre-positioned to face the switch. These preliminary actions ensure that when the button assembly is installed, the components are already in their correct positions and orientations, maintaining assembly stability while simplifying the overall installation process.
2Ease of operation
If button structures are simply fixed in electronic devices, then the device complexity is reduced and ease of operation is improved, but the duration of action deteriorates and buttons become prone to failure over time
Solution Approach 1:
The button assembly incorporates dynamic elements that allow for controlled movement within defined limits. The pressing member can move when pressed, and the circuit board is allowed to move within the limits set by the stop plate. This dynamic design maintains ease of operation while preventing excessive movement that could lead to failure over time. The elastic deformation of components during pressing and recovery ensures long-term durability.
3Stability of the object's composition
If the first stop plate and first limiting part have tight tolerance (distance ≤ 0.1 mm), then the assembly stability is improved and the switch member remains secure, but the manufacturing precision requirements increase
Solution Approach 1:
The patent specifies a particular parameter range for the distance between the stop plate and limiting part (≤ 0.1 mm), which optimizes the balance between assembly stability and manufacturing feasibility. This parameter control ensures that the circuit board is properly limited without requiring extremely tight tolerances that would be difficult to achieve in mass production. The design allows for some variation while maintaining functional stability.
Data Source
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AI summary
This application provides an electronic device, including a middle frame, a switch member, a pressing member, and a fixing member, where the middle frame is provided with a mounting slot and a button slot, and the button slot communicates with the mounting slot; the switch member is mounted in the mounting slot, the switch member includes a circuit board and a switch fixed to the circuit board, and the circuit board includes a first limiting part; the pressing member includes a pressing part, and a pushing part and a clamping part that are connected to the pressing part, the pushing part and the clamping part extend from the button slot into the mounting slot, the pushing part faces toward the switch, and the pressing part is partially exposed on the external face of the middle frame; and the fixing member is located in the mounting slot, the fixing member includes a fixing plate, and an engaging plate and a first stop plate that are connected to the fixing plate, the fixing plate is fixedly connected to a slot bottom wall and/or a slot side wall of the mounting slot, the engaging plate clamps the clamping part, the first stop plate is located on a side of the first limiting part away from the slot bottom wall of the mounting slot, and the first stop plate faces toward the first limiting part or abuts against the first limiting part, so that the switch member limited in the mounting slot, assembly stability of the switch member is improved, and user experience is improved.