Compact SIM Card Holder with Rotating Catching Mechanism
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Solution Overview
Problem
Conventional SIM card holders are excessively large due to a large deformable portion, making them difficult to operate and requiring users to hold the mobile phone with one hand while installing or removing the SIM card with the other.
Innovation Solution
A compact SIM card holder design featuring a base with a receiving groove and a catching mechanism comprising a main board with a bending piece and hem, allowing for easy engagement and disengagement to prevent sliding and facilitate rotation, enabling secure and space-efficient SIM card placement and removal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional locking element with a large deformable portion is used, then the SIM card can be securely held, but the SIM card holder occupies too much space and increases in height
Solution Approach 1:
The locking element is divided into multiple functional segments: a fixing portion for holding the SIM card, a deformable portion for enabling release, and an operating portion for user interaction. This segmentation allows each part to perform its specific function efficiently without requiring excessive overall dimensions.
Solution Approach 2:
The locking mechanism transitions from a primarily vertical deformation mode in conventional designs to a combination of horizontal sliding and rotational movements. The deformable portion moves horizontally along guide grooves and rotates about an axis, utilizing dimensional changes to achieve the same locking function with reduced height.
2Reliability
If a conventional locking element is used, then the SIM card can be held securely, but it becomes difficult for users to operate with one hand
Solution Approach 1:
The operating portion is designed to be manipulated easily by a single thumb, allowing the user to trigger the release mechanism without requiring precise two-handed coordination. The deformable portion automatically engages and disengages the fixing portion through the sliding and rotating motions, reducing the operational complexity for the user.
3Reliability
If the deformable portion is made larger to improve reliability, then the SIM card holder becomes more difficult to operate and occupies more space
Solution Approach 1:
The locking mechanism employs dynamic movements including horizontal sliding along guide grooves and rotation about an axis. This dynamic approach allows the deformable portion to achieve reliable engagement and disengagement through controlled motion paths, reducing the need for excessive material and simplifying the overall structure.
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
The design reduces the overall size of the SIM card holder, making it easier to operate and allowing single-handed installation and removal of the SIM card without occupying excessive space in electronic devices.
Implementation Method 1
The main board comprises an elastic slice resisting the protrusion of the base when the bending piece is engaged with the base
Data Source
AI summary
A SIM card holder includes a base (10) and a catching mechanism (20). The base defines a receiving groove (114) and a slot (110). The receiving groove is configured for receiving the SIM card therein. The base comprises a protrusion (108). The protrusion and the slot are arranged at two opposite sides of the receiving groove. The catching mechanism comprises a main board (201) having a bending piece (202) and a bending hem (204) at two opposite ends thereof. The bending piece is detachably engaged with the base, and the bending hem is constantly retained in the slot of the base. The main board comprises an elastic slice resisting the protrusion of the base when the bending piece being engaged with the base. The catching mechanism is movable relative to the base and rotatable about the end of the bending hem when the slice disengages from the protrusion.