Button Retention Structure for Tight-Space Electronic Frames
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Solution Overview
Problem
Existing electronic devices face challenges in securely attaching buttons to frames due to limited installation space, leading to structural performance issues and difficulties in assembly.
Innovation Solution
The electronic device incorporates a frame with a button hole and a pin hole, featuring a stop protrusion and a stop pin, along with hooks on the button to securely engage these components, ensuring the button cannot be detached and facilitating easy assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a snap ring is used to limit the button, then the button can be prevented from detaching, but the installation space is limited and assembly becomes difficult
Solution Approach 1:
The button attachment system is segmented into multiple independent limiting structures: a first limiting structure formed by the snap ring and limit groove, and a second limiting structure formed by the stop pin and stop protrusion. This segmentation allows each component to perform its limiting function independently, improving reliability while maintaining assembly ease through simple sequential installation
Solution Approach 2:
The stop pin acts as an intermediary element that bridges the button and the frame. By inserting the stop pin through the pin hole and engaging it with the stop protrusion on the button, it provides an additional limiting mechanism that complements the snap ring system, ensuring secure attachment without complicating the assembly process
2Reliability
If a snap ring is used to limit the button, then the button can be prevented from detaching, but the structural performance is lowered due to limited installation space
Solution Approach 1:
The limiting function is divided between two independent systems: the snap ring providing radial retention and the stop pin providing axial limitation. This segmentation allows each component to be optimized for its specific function, with the stop pin offering superior axial strength compared to relying solely on the snap ring's radial force
Solution Approach 2:
The limitation approach transitions from a single radial dimension (snap ring) to multiple dimensions by adding the stop pin in the axial direction. The stop protrusion extends axially to engage with the stop pin, creating a three-dimensional limiting system that enhances overall structural performance
3Reliability
If a snap ring is used to limit the button, then the button can be prevented from detaching, but assembly becomes difficult due to limited installation space
Solution Approach 1:
The stop pin is designed to be pre-positioned in the frame's pin hole before button assembly. The pin hole is formed directly in the frame, allowing the stop pin to be installed in advance. This preliminary action simplifies the overall assembly process by eliminating the need for complex sequential operations in tight spaces
Solution Approach 2:
The assembly process is segmented into independent steps: first installing the snap ring on the button post, then inserting the stop pin through the pre-formed pin hole. This segmentation allows each component to be installed through its own dedicated access path, making assembly easier despite limited overall installation space
Data Source
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AI summary
An electronic device (100) is provided in the disclosure. An electronic device (100) includes a frame (10), a stop pin (20), and a button (30). The frame (10) defines a button hole (11) and a pin hole (12) in communication with the button hole (11). An inner side wall of the button hole (11) is provided with a stop protrusion (13) at a position away from the pin hole (12). The stop pin (20) is inserted into the pin hole (12) and partially received in the button hole (11). The button (30) is provided with a first hook (31) and a second hook (32) away from the first hook. The first hook (31) hooks the stop protrusion (13). The second hook (32) hooks part of the stop pin (20) in the button hole (11). The button (30) can be pressed to slide a preset distance under a limit of the stop pin (20) and the stop protrusion (13). The stop pin (20) is inserted into and partially received in the pin hole (12). The first hook (31) of the button (30) hooks the stop protrusion (13) and the second hook (32) hooks the stop pin (20), and thus it can be ensured that the button (30) cannot be detached from the frame (10) to provide the button (30) with a safety limit.