Rollable Display Slide Mechanism for Battery-Saving Internal Layout
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Solution Overview
Problem
Existing electronic devices with flexible displays face challenges in optimizing the disposition of electrical components, particularly the rack and battery, which can reduce device slimness and battery capacity due to overlapping space requirements.
Innovation Solution
An efficient disposition structure is implemented, where the drive motor, including a pinion gear and rack, is positioned to avoid overlapping with the battery, allowing for a non-overlapping arrangement of the rack and battery, thereby enhancing device slimness and battery capacity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the rack and battery are disposed in parallel without overlapping, then the device slimness is improved and battery capacity is maximized, but the device complexity increases due to the need for precise spatial arrangement of components
Solution Approach 1:
The patent transitions from a traditional overlapping two-dimensional layout to a non-overlapping parallel arrangement by utilizing the third dimension (depth/thickness) of the device. The rack is positioned in the sliding mechanism space while the battery occupies the parallel space beneath it, effectively using vertical stacking to eliminate horizontal overlap and reduce overall device footprint.
Solution Approach 2:
The device interior space is segmented into distinct functional zones: the rack occupies the upper portion associated with the sliding mechanism, while the battery is allocated to the lower portion. This segmentation allows independent optimization of each component's position and size without interfering with the other, thereby reducing device complexity through modular spatial organization.
2Volume of moving object
If the rack guide is disposed on the right side of the driving motor to overlap with electrical components, then the device slimness is reduced, but the manufacturing ease is improved due to simplified component layout
Solution Approach 1:
Instead of extending the rack guide horizontally to the right side of the motor (which would increase device width), the patent positions the rack guide in the vertical dimension beneath the motor assembly. This allows the rack guide to perform its function while overlapping with the battery in the vertical axis, thereby maintaining compact horizontal dimensions while preserving manufacturing simplicity.
3Volume of moving object
If the rack and battery are disposed to overlap each other, then the device size is reduced, but the battery capacity is compromised due to space constraints
Solution Approach 1:
The patent eliminates the conflict between device size and battery capacity by transitioning from horizontal overlapping to vertical stacking. The battery is positioned in the lower portion of the device with extended vertical space, allowing maximum battery capacity while the rack occupies the upper portion. This dimensional reorganization enables both compact device size and large battery capacity without compromise.
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
This arrangement helps in reducing the overall size of the electronic device while maintaining or increasing battery capacity, thus improving the operating time of the device.
Implementation Method 1
a driving motor disposed in the second housing and including a pinion gear; a rack fixedly coupled to the first housing and including a rack gear driven by being gear-coupled to the pinion gear
Data Source
AI summary
An electronic device comprises: a first housing; a second housing slidably coupled to first housing; a flexible display having a display area that varies based on a slide-in or slide-out state of the second housing; a driving motor disposed in the second housing and including a pinion gear; a rack fixedly coupled to the first housing and including a rack gear driven by being gear-coupled to the pinion gear; a rack guide disposed in the second housing and protecting the rack; a multi-bar supporting the rear surface of one portion of the flexible display; and a driving belt connected to one end of the multi-bar and one end of the second housing, wherein the rack guide is disposed on the side of the driving motor to spatially overlap with electrical components disposed in the second housing, and the second housing is configured to be driven to slide-in or slide-out.