Two-Stage Power Button Mechanism for Tool-Free SIM Tray Ejection
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Solution Overview
Problem
Existing mobile phone designs that integrate SIM and storage card installation through a card tray mechanism face issues with appearance integrity and convenience, as they often require external tools like poking pins or materials that can detach, compromising aesthetics and usability.
Innovation Solution
A card tray withdrawing apparatus with a two-stage pressure button mechanism that turns on a circuit and separates the card tray from the slot using interference parts and a lever system, allowing manual withdrawal without external tools, while maintaining the phone's attractive appearance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a poking pin is used to withdraw the card tray, then the card tray can be removed, but the appearance of the phone body is influenced and users need to carry or search for the poking pin
Solution Approach 1:
The power button is merged with the card tray ejection function. When the power button is pressed, it simultaneously activates the power function and triggers the card tray ejection mechanism through the poking pin, eliminating the need for a separate ejection tool while maintaining appearance integrity
Solution Approach 2:
The power button is designed to serve multiple functions: it acts as both the power switch and the card tray ejection mechanism. This multi-functionality reduces the need for separate components and maintains the sleek appearance of the device
2Shape
If a pressed pop-up card slot with a strip is used, then the card slot can be covered, but the material inconsistency and detachment issues greatly influence the attractive appearance
Solution Approach 1:
The problematic strip component is completely removed from the design. Instead of using a separate strip to cover the card slot, the card tray itself is designed to be ejected through the power button mechanism, eliminating the reliability issues associated with strip attachment while maintaining appearance coverage
3Ease of operation
If a pinhole is reserved for poking pin insertion, then the card tray can be withdrawn, but the attractive appearance of the phone body is influenced
Solution Approach 1:
The power button serves as both the operational interface for power control and the access point for card tray ejection. This merging eliminates the need for a separate pinhole, as the same button structure triggers the ejection mechanism internally, maintaining appearance integrity while ensuring operational accessibility
Data Source
AI summary
A card tray withdrawing apparatus and communication device are provided. Herein, the card tray withdrawing apparatus includes a first interference part arranged at a first position in a housing, a second interference part arranged at a second position in the housing, and a button mounted on the housing, capable of moving from an initial position to the first position and capable of moving from the first position to the second position. The button moving to the first position interferes with the first interference part, and the first interference part turns on a circuit in the housing; and the button moving to the second position interferes with the second interference part, and the second interference part drives a card tray to be separated from a card slot. Herein, the communication device includes a housing, and further includes the card tray withdrawing apparatus.