Movable Waterproof Unit for Mobile Terminal SIM Tray Sealing
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Solution Overview
Problem
Mobile terminals face challenges in maintaining a waterproof seal for the SIM tray input/output hole, which can lead to water ingress and damage.
Innovation Solution
A mobile terminal design incorporating a waterproof unit with a movable body, guide parts, and a packing part that shields the SIM tray hole, providing a waterproof effect by contacting the inner surface of the hole and using a force transmitting member to maintain the seal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a waterproof seal is provided for the SIM tray hole, then water ingress is prevented, but the structure becomes more complex and the SIM tray insertion/removal becomes difficult
Solution Approach 1:
The waterproof unit is designed to be movable rather than fixed. It automatically moves to a first position to seal the SIM tray hole during normal operation, and moves to a second position to open the hole when the SIM tray is inserted or removed. This dynamic positioning resolves the contradiction by providing waterproof sealing only when needed, while allowing easy SIM tray operation when required.
2Reliability
If a movable waterproof unit is used to seal the SIM tray hole, then waterproof performance is maintained while allowing SIM tray operation, but the device complexity increases
Solution Approach 1:
The waterproof unit integrates multiple functions into a single component: it combines the sealing function (through the packing member), the guiding function (through the guide portion), and the blocking function (through the blocking portion). By merging these functions into one integrated unit, the design achieves effective waterproofing without proportionally increasing overall device complexity.
Solution Approach 2:
The guide portion acts as an intermediary element that facilitates the movement of the waterproof unit between sealed and open positions. It works in conjunction with the guide groove to provide smooth, controlled motion, reducing the complexity of the moving mechanism while ensuring reliable operation.
3Ease of operation
If the waterproof unit is made movable to allow SIM tray removal, then ease of operation is improved, but the waterproof seal reliability may deteriorate
Solution Approach 1:
The guide groove is pre-formed in the SIM tray with precise dimensions and geometry. This preliminary preparation ensures that when the waterproof unit moves along the guide groove during SIM tray insertion or removal, it returns to the exact same sealed position, maintaining consistent sealing reliability despite the movable design.
Data Source
AI summary
The mobile terminal is disclosed. The mobile terminal of the present invention may include a body having a body hole, a display unit, a waterproof unit, and a second guide unit. A part of the waterproof unit is movable in the body hole, and the waterproof unit may open and close the body hole. When the waterproof unit shields the body hole, liquid inflow from the outside to the inside may be suppressed through the body hole. The second guide part may guide a part of the waterproof unit to move in the direction of opening the body hole in the body hole. The waterproof unit may include a waterproof unit body moving inside the body hole, a guide connection part extending from the waterproof unit body, and a guide bending part extending from the guide connection part and curved. The guide bending part is guided away from the waterproof unit body, so that warpage of the waterproof unit may be prevented.