Foldable Stand Hinge Locking to Prevent Abnormal Opening
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Solution Overview
Problem
Existing foldable holders for electronic devices experience abnormal opening and closing due to torque attenuation in the rotating shafts during continuous use.
Innovation Solution
A foldable holder design featuring a first support plate, a second support plate, a bottom plate, first and second rotating portions, and a clamping portion, which allows for normal opening and closing logic by locking and unlocking the rotating portions using a clamping mechanism.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a hinge-type foldable holder relies on torque difference of rotating shafts to realize opening and closing, then the holder can achieve automatic opening and closing function, but the torque of the rotating shafts is attenuated during continuous opening and closing processes, leading to abnormal opening and closing
Solution Approach 1:
The patent introduces a clamping portion as an intermediary component that clamps the rotating shafts to transmit and stabilize torque during opening and closing operations. This mediator prevents torque attenuation by ensuring consistent force transmission between the first and second rotating shafts, thereby maintaining reliable automatic opening and closing function without abnormal behavior.
Solution Approach 2:
The clamping portion performs preliminary action by pre-clamping the rotating shafts before the opening and closing motion begins. This preliminary clamping ensures that the torque is properly transmitted from the start of the operation, preventing torque attenuation during the continuous opening and closing processes and maintaining consistent operational reliability.
2Reliability
If the clamping portion is added to clamp rotating shafts to prevent torque attenuation, then the reliability of opening and closing is improved, but the device complexity increases
Solution Approach 1:
The clamping portion is merged with the existing support plates and rotating shafts structure. The clamping portion utilizes the same spatial arrangement and structural elements already present in the foldable holder, combining multiple functions into a unified structure that prevents torque attenuation without significantly increasing overall device complexity.
Solution Approach 2:
The clamping portion serves multiple functions: it clamps the rotating shafts to prevent torque attenuation, maintains the angular relationship between support plates during rotation, and ensures consistent torque transmission. This multi-functionality reduces the need for additional separate components, thereby limiting the increase in device complexity while improving reliability.
Data Source
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AI summary
The application provides a foldable holder and an electronic device. A bottom plate of the foldable holder is rotationally connected to a first support plate through a first rotating portion, and a second support plate is rotationally connected to the first support plate through a second rotating portion. A clamping portion is mounted on the first support plate and slidable relative to the first support plate. When the foldable holder is in a closed state, the clamping portion clamps the second rotating portion to lock the first support plate and the second support plate, the first support plate and the second support plate are rotatable relative to the bottom plate so that the first support plate is arranged at an angle to the bottom plate, the clamping portion is unlocked from the second rotating portion and clamped with the first rotating portion, the first support plate is located at an angle to the bottom plate, and the unlocking of the second rotating portion enables the second support plate to rotate relative to the first support plate until the second support plate is arranged at an angle to the first support plate. The foldable holder provided in this application can resolve the problem of abnormal opening and closing of the foldable holder in the prior art.