Cam Support Frame for Smooth Opening and Stable Positioning
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing support frames for electronic devices, such as displays and mobile phones, often require excessive force to switch between open and closed states, leading to loud impacts or unstable open positions, which affect user experience and safety.
Innovation Solution
A support frame design that includes a movable element with a cam structure, an elastic element with multiple separated elastic pieces, and a limiting element with pins slidably engaged against convex portions of the cam structure, providing different rotational resistances to control the switching forces between open and closed states.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single spring piece is used to provide elastic force, then the structure is simple, but the force required to switch between open and closed states is either too large causing impact sounds or too small making it difficult to maintain open state
Solution Approach 1:
The single spring piece is divided into multiple elastic pieces (first elastic piece, second elastic pieces) that are separated from each other. Each elastic piece has pins that engage with different convex portions of the cam structure, allowing independent control of elastic forces during opening and closing operations.
Solution Approach 2:
Different regions of the cam structure have different convex portions (first convex portion, second convex portion) with different rotational resistance characteristics. The first convex portion provides low rotational resistance for easy opening, while the second convex portion provides high rotational resistance for stable closed state, creating localized functional differences.
2Stability of the object's composition
If excessive force is required to switch states, then the support frame can maintain stable positions, but loud impact sounds are produced with the housing
Solution Approach 1:
The cam structure is designed with convex portions that provide gradual resistance buildup before final engagement. The first convex portion allows smooth transition during opening with low resistance, cushioning the transition to prevent impact sounds, while the second convex portion provides controlled resistance for stable closing.
3Ease of operation
If a small amount of force is required to switch between states, then operation is easy, but the support frame is too prone to closure affecting user experience and safety
Solution Approach 1:
The system dynamically adjusts rotational resistance based on operational phase. During opening, the pins engage with the first convex portion providing low rotational resistance for easy operation. During closing and open state maintenance, the pins engage with the second convex portion providing high rotational resistance to prevent unintended closure, creating dynamic force characteristics.
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 support frame design reduces the force required to switch from closed to open and prevents unintended closure, thereby enhancing user experience and safety by providing a stable and smooth operation.
Implementation Method 1
The elastic element is disposed in the electronic body and includes multiple elastic pieces separated from each other
Implementation Method 2
A rotational resistance of the movable element relative to the electronic body when the pins are slidably engaged against the first convex portion is different from a rotational resistance of the movable element relative to the electronic body when the pins are slidably engaged against the second convex portion
Data Source
AI summary
A support frame is suitable for supporting an electronic body. The support frame includes a movable element, an elastic element and a limiting element. The movable element includes a body and a cam structure. The cam structure is located on one end of the body, and the end is pivotally connected to the electronic body. The cam structure includes a first convex portion and a second convex portion. The elastic element is disposed in the electronic body and includes elastic pieces separated from each other. The limiting element is disposed in the electronic body and includes pins located on the elastic pieces. A rotational resistance of the movable element relative to the electronic body when the pins are slidably engaged against the first convex portion is different from a rotational resistance of the movable element when the pins are slidably engaged against the second convex portion.