Mobile Terminal Sliding Frame Stabilization Mechanism
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Solution Overview
Problem
Mobile terminals with flexible displays face challenges in maintaining a stable changed state due to the variability in their structure, requiring a reliable support mechanism for the flexible display unit.
Innovation Solution
A mobile terminal design incorporating a first and second frame with a slide mechanism, a driver system including a motor, pinion gear, rack gear, stopping groove, and electromagnet to stabilize the second frame relative to the first frame, allowing for expansion and contraction while maintaining the changed state.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a flexible display unit is used to enable variable size, then the mobile terminal can expand and contract, but the structure becomes unstable and difficult to maintain in a changed state
Solution Approach 1:
The mobile terminal employs a dynamic structure where the second frame can slide relative to the first frame along the longitudinal direction, enabling the terminal to transition between extended and contracted states. The driver assembly provides controlled movement through a motor-driven rack and pinion mechanism, allowing the flexible display to be positioned at different locations while maintaining stability in each state.
Solution Approach 2:
The driver assembly acts as an intermediary mechanism between the control system and the second frame. It includes a motor, pinion gear, rack gear, stopper, and electromagnet that work together to control the position of the second frame. The stopper and electromagnet provide stable positioning by engaging with stopping grooves on the rack gear, preventing the structure from becoming unstable during state changes.
2Reliability
If a driver system with electromagnet is used to stabilize the second frame, then the terminal can maintain changed state, but the control complexity increases
Solution Approach 1:
The electromagnet and stopper system operates on a self-service principle where the electromagnet automatically engages with the stopper when power is supplied, and releases it when power is cut. This eliminates the need for complex control logic - the system simply needs to control power supply to the electromagnet, and the mechanical components handle the positioning and latching automatically through the rack gear and stopping grooves.
Solution Approach 2:
The patent replaces complex mechanical control mechanisms with an electromagnetic field-based system. Instead of using multiple mechanical switches, levers, or sensors to control the position of the second frame, the system uses an electromagnet that responds simply to electrical power supply. This substitution of mechanical control with electromagnetic control reduces overall system complexity while improving reliability.
3Ease of operation
If the second frame moves freely during state changes, then the terminal can transition between states, but mechanical damage may occur
Solution Approach 1:
The system performs preliminary action by positioning the stopper and electromagnet in advance along the longitudinal direction. Before the second frame reaches its target position, the electromagnet is activated to engage with the stopper, which is already positioned at the appropriate location on the rack gear. This preliminary positioning prevents the second frame from overshooting or moving uncontrollably, thereby preventing mechanical damage during state transitions.
Solution Approach 2:
The stopper and electromagnet system provides beforehand cushioning by preparing the stopping mechanism in advance. The stopping grooves are pre-formed on the rack gear at specific positions, and the stopper is positioned to engage with these grooves. When the second frame approaches a target state, the electromagnet is activated to engage the stopper with the groove, providing a controlled stopping action that prevents excessive force or impact, thus cushioning against potential mechanical damage.
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 solution enables the mobile terminal to stably maintain its expanded or contracted state without complex control over the power supply to the electromagnet, simplifying the control process and reducing the risk of mechanical damage during state changes.
Implementation Method 1
an electromagnet for inserting or spacing the stopper into or from the stopping groove
Implementation Method 2
an elastic portion for pressing the stopper in a fourth direction opposite the third direction
Data Source
AI summary
A mobile terminal includes a first frame, a second frame slidable from the first frame in a first direction or in a second direction opposite to the first direction, a slide frame movable in the first direction with respect to the second frame, a flexible display unit including a first, a second region, and a third region, and a driver for providing a force to move the second frame, wherein the driver includes a first driver part positioned on the first frame, a second driver part coupled to the second frame, wherein the second driver part receives the driving force to move the second frame while moving in the first direction n with respect to the first driver part, a stopping groove defined in the second driver part, a stopper fastened to the stopping groove, and an electromagnet for inserting or spacing the stopper into or from the stopping groove.