Flip Camera Hinge Friction for Stable Angle Positioning
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Solution Overview
Problem
Full-screen smartphones with flip cameras face instability due to easy rotation or shaking under external forces, such as vehicle vibrations, caused by manufacturing tolerances and clearance issues between internal parts.
Innovation Solution
Incorporation of a rotating resistance device that applies frictional resistance to the shaft portion of the flip function module, using elements like Belleville washers, tension springs, helical washers, rubber rings, and viscous liquids to prevent unwanted rotation and maintain stable positioning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a flip camera is implemented in a full-screen smartphone, then the photographing angle can be changed continuously, but the camera module becomes unstable and rotates or shakes easily under external forces
Solution Approach 1:
The patent applies preliminary action by pre-positioning the rotating resistance device (such as a brake pad or friction element) in contact with the shaft portion before rotation occurs. This pre-positioned resistance mechanism is ready to provide stabilizing friction force immediately when external forces act on the camera module, preventing unwanted rotation or shaking while allowing intentional angle changes when force is applied by the user.
2Stability of the object's composition
If manufacturing tolerances and clearance between internal parts are reduced to improve stability, then the camera module becomes more stable, but the manufacturing complexity and cost increase
Solution Approach 1:
The patent introduces a rotating resistance device as an intermediary element between the shaft portion and the housing. This mediator component provides the necessary frictional resistance to stabilize the camera module without requiring tight manufacturing tolerances or minimal clearances between other internal parts. The intermediary device absorbs the manufacturing variations while maintaining stable operation.
3Stability of the object's composition
If a rotating resistance device is added to stabilize the flip camera, then the camera stability improves, but the device complexity increases
Solution Approach 1:
The patent extracts the stabilization function from the overall camera module structure and implements it as a separate, dedicated rotating resistance device. This extracted component can be a simple friction pad, brake element, or damping material that provides resistance independently, rather than requiring the entire mechanism to be redesigned with complex interlocking parts. The separation allows for simpler individual components while achieving the desired stability effect.
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 rotating resistance device effectively stabilizes the flip camera at any angle, preventing rotation due to external forces and ensuring high stability for continuous changes in photographing angles.
Implementation Method 1
a rotating resistance device that applies frictional resistance to the shaft portion of the flip function module
Data Source
AI summary
An electronic device is provided in this disclosure. The electronic device includes a body, a shaft sleeve, a function module, and a rotating resistance device. The shaft sleeve is fixed to the body. The function module includes a shaft portion rotatably disposed on the shaft sleeve. The rotating resistance device is disposed on the shaft sleeve or fixed to the body and is against the shaft portion of the flip function module to apply rotational resistance to the shaft portion of the function module, so that the function module stably stays at any position without being affected by an external force.