Rollable Display Stopper Assembly for Slide-Out Impact Protection
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Solution Overview
Problem
Electronic devices with rollable displays are prone to damage from external impacts, such as drops, which can malfunction the drive module due to the reverse driving force of the pinion and rack gears when the second housing is slid out.
Innovation Solution
Incorporation of a stopper assembly with an elastic member that presses stoppers to maintain the slide-out state, preventing damage from external impacts by securing the position of the second housing relative to the first housing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the drive module uses pinion and rack gears with reverse driving force to maintain position, then the position stability is improved, but the reliability deteriorates due to damage from external impacts
Solution Approach 1:
A damping member is introduced between the rack gear and the second housing to absorb impact energy before it reaches the drive module. This cushioning element prevents direct transmission of external shocks (such as drops) to the pinion and rack gears, thereby protecting the drive mechanism while maintaining the reverse driving force position stability function.
2Area of moving object
If the second housing is slid out to expand display area, then the display area is improved, but the vulnerability to impact damage increases
Solution Approach 1:
The damping member is positioned to provide protection specifically when the second housing is in the slid-out position. By placing the cushioning element in the impact path between the rack gear and the second housing, it absorbs shock energy before it can damage the drive module, enabling safe expansion of display area without proportionally increasing vulnerability.
3Ease of operation
If the pinion and rack gears are gear-coupled for automatic sliding operation, then the ease of operation is improved, but the harmful factors increase due to reverse driving force damage
Solution Approach 1:
The damping member acts as an intermediary element between the rack gear and the second housing. It mediates the interaction by absorbing impact energy while allowing the gear-coupled pinion and rack gears to maintain their reverse driving force function for position holding, thus protecting against damage while preserving ease of automatic sliding operation.
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 stopper assembly enhances operational reliability by maintaining the slide-out state even under external impact, reducing damage to the drive module and ensuring the electronic device's functionality.
Implementation Method 1
a stopper assembly with an elastic member that presses stoppers to maintain the slide-out state
Data Source
AI summary
An example electronic device may include a first housing, a second housing coupled to be slidable from the first housing, a flexible display supported by the first housing and the second housing and having a display area that varies based on the second housing being slid in or slid out. The electronic device may include a stopper assembly disposed in the first housing. The stopper assembly may include a stopper body elastically coupled to at least a portion of the first housing, and a pressing member coupled to the stopper body and configured to come into contact with a protrusion located in the second housing, wherein, in a slide-out state, the stopper body is at least partially disposed in a recess in the second housing by pressure from the pressing member being pressed by the protrusion.