Rotating User Device Movable Part With Friction Elimination
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Solution Overview
Problem
Existing user devices require continuous external force to rotate movable parts, impairing user operability due to frictional constraints.
Innovation Solution
Incorporation of a switching control unit and a rotation driver unit that eliminate friction and apply a pre-pressing elastic force, allowing the movable part to automatically rotate relative to the main body part without continuous user intervention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a mechanical rotation axle is used to connect the main body part and movable part, then the movable part can be fixed relative to the main body part through friction, but the user must continuously apply external force to rotate the movable part, impairing user operability
Solution Approach 1:
The patent extracts the friction constraint function from the mechanical rotation axle and transfers it to a switching control unit. This unit can eliminate friction when needed, allowing the movable part to rotate automatically under elastic force without requiring continuous user force application.
Solution Approach 2:
The patent makes the friction characteristic dynamic by introducing a switching control unit that can change the friction state between the main body part and movable part. The friction can be eliminated when rotation is needed and restored when positioning is needed, making the system adaptable to different operational requirements.
2Stability of the object's composition
If friction is used to fix the movable part relative to the main body part, then the movable part remains stationary, but the user must continuously apply external force to initiate and maintain rotation
Solution Approach 1:
The patent introduces a rotation driver unit that applies a pre-pressing elastic force in advance to the movable part. When the switching control unit eliminates friction, this pre-stored elastic force automatically drives the rotation without requiring continuous external force from the user.
Solution Approach 2:
The system becomes self-service by using the pre-stored elastic force in the rotation driver unit to automatically drive the movable part's rotation. Once friction is eliminated by the switching control unit, the elastic force self-propels the rotation without needing continuous user intervention.
3Ease of operation
If a mechanical rotation axle with friction is used, then the movable part can be held in position, but the operation requires continuous mechanical actuation by the user
Solution Approach 1:
The patent implements periodic action by using the switching control unit to periodically eliminate and restore friction. Friction is eliminated only when rotation is needed (brief period), and restored when positioning is needed, replacing the requirement for continuous user actuation with periodic automatic control.
Solution Approach 2:
The patent ensures continuity of useful action by having the rotation driver unit continuously apply pre-pressing elastic force to the movable part. This elastic force is always ready to drive rotation immediately when friction is eliminated, eliminating gaps or interruptions in the rotation action.
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
Enhances user operability by enabling the movable part to rotate autonomously under the influence of a pre-pressing elastic force, reducing the need for mechanical actuation during rotation.
Implementation Method 1
the rotation driver unit is configured to apply a pre-pressing elastic force on the movable part when the switching control unit is turning on the rotation mode of the movable part
Data Source
AI summary
The embodiments of the present disclosure provide a user device, which includes a main body part, a movable part electrically connected with the main body part, and a switching control unit and a rotation driver unit for co-axially connecting the main body part with the movable part. The switching control unit is used for eliminating a friction that enables the main body part to be fixed relative to the movable part fixed to turn on a rotation mode of the movable part. The rotation driver unit is used for applying a pre-pressing elastic force to the movable part when the switching control unit turns on the rotation mode of the movable part, so as to enable the movable part to automatically rotate relative to the main body part. The pre-pressing elastic force is less than the friction.