Rotating Linkage Mechanism for Mobile Device Protection
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Solution Overview
Problem
Conventional mobile electronic devices with large interface elements, such as touchscreens, are prone to scratches and damage due to lack of effective protection, and existing protective covers often add bulk, detract from aesthetics, and are inconvenient to use in limited spaces.
Innovation Solution
A mobile electronic device design featuring first and second body members with a linkage mechanism that allows for controlled movement between opened and closed positions, using a pulley or gear system to constrain the movement to a predefined path, providing protection and maintaining accessibility while minimizing bulk.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a protective cover is added to protect interface elements, then protection against scratches and damage is improved, but device bulk increases and aesthetics are degraded
Solution Approach 1:
The protective cover is merged with the device body through a linkage mechanism, allowing the cover to be integrated into the device structure rather than being a separate accessory. The cover and body members work together as a unified system that provides protection while maintaining a compact form factor.
Solution Approach 2:
The protective cover transitions from a static separate component to a dynamic element that can move between closed (protective) and open (accessible) positions. The linkage mechanism enables controlled movement, allowing the cover to adapt its position based on usage needs while maintaining protection when closed.
2Reliability
If a conventional book-style cover is used, then protection is provided, but the device width increases when opened making it inconvenient in limited spaces
Solution Approach 1:
The cover movement is transitioned from a lateral opening motion (book-style) to a rotational motion around an axis. This dimensional change allows the cover to open without increasing the device's lateral footprint, as the cover rotates upward rather than outward, maintaining a compact profile in limited spaces.
3Reliability
If a loose cover is used, then protection is provided, but control is lost making opening and closing cumbersome
Solution Approach 1:
The linkage mechanism provides mechanical feedback through controlled motion paths and natural stopping positions. As the cover moves toward its closed or open positions, the mechanism creates natural stops that provide tactile feedback to the user, indicating when the cover has reached its intended position, thereby improving control without requiring additional components.
4Ease of operation
If interface elements are constantly exposed, then accessibility is maintained, but scratches and degradation occur
Solution Approach 1:
The protective cover is positioned to preemptively shield the interface elements from harmful factors such as scratches, dust, and moisture. By closing the cover when the device is not in use, potential damage is prevented before it can occur, while the interface remains fully accessible when the cover is opened for use.
Data Source
AI summary
According to some embodiments, a mobile electronic device is provided with a linkage mechanism that couples first and second members of the device such that the device may be moved between a first position and a second position. The linkage mechanism includes a linkage intermediate the first and second members, the linkage having a fixed length. The linkage mechanism further includes a motion constraint mechanism that constrains movement of the first member with respect to the second member to a controlled motion. The linkage mechanism described herein may further provide that the top member rotates without increasing the length or width of the device.