Cam-Based Hinge Mechanism for Automatic Mobile Terminal Opening
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Solution Overview
Problem
Existing mobile communication terminals face challenges in miniaturization, production cost, and power consumption due to complex hinge structures, either requiring user intervention or motor-driven mechanisms that complicate design and increase costs.
Innovation Solution
A hinge structure featuring a drive cam, drive shaft, follower shaft, follower cam, and resilient members that allow the second housing to be automatically opened by pressing a drive button, eliminating the need for motors and conductor lines, enabling miniaturization and reducing production costs and power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If an automatic hinge structure with motor is employed, then ease of operation is improved, but device complexity and production cost increase
Solution Approach 1:
The patent replaces the motor-driven mechanical system with a purely mechanical cam-based automatic hinge structure. The cam mechanism converts linear motion of the resilient member into rotational motion of the hinge, eliminating the need for motors and electronic control systems while maintaining automatic operation capability.
Solution Approach 2:
The hinge structure utilizes the resilient member (spring) to store and release energy automatically, driving the cam mechanism to open or close the folder without external power sources. The system serves itself by converting elastic potential energy into mechanical work for hinge operation.
2Ease of operation
If an automatic hinge structure with motor is employed, then ease of operation is improved, but power consumption increases
Solution Approach 1:
The patent eliminates the motor and electrical power supply system by using a purely mechanical cam-based automatic hinge structure driven by a resilient member, thereby completely removing battery power consumption for hinge operation.
Solution Approach 2:
The resilient member stores energy during folder closing and automatically releases it to drive the hinge open, creating a self-powered system that requires no external energy sources for hinge operation.
3Device complexity
If a semiautomatic hinge structure is used, then device complexity is reduced, but ease of operation deteriorates
Solution Approach 1:
The hinge structure automatically converts the user's initial folding action into complete opening motion through the cam mechanism and resilient member, making the system serve itself and eliminating the need for continuous user intervention throughout the opening process.
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 hinge structure allows for automatic opening of the mobile terminal without motors, facilitating miniaturization, reducing production costs, and eliminating battery power consumption for opening/closing operations, enhancing user convenience and device efficiency.
Implementation Method 1
an opening/closing resilient member for pushing the follower cam against the follower shaft
Data Source
AI summary
A hinge structure for a mobile communication terminal includes a drive cam arranged to be linearly displaced along a hinge axis, a drive shaft arranged to face the drive cam to be rotated about the hinge axis according to linear displacement of the drive cam, a follower shaft arranged to surround the drive shaft to be rotated along with the drive shaft, a follower cam arranged to face the follower shaft to be linearly displaced along the hinge axis according to rotation of the follower shaft, and an opening/closing resilient member for pushing the follower cam against the follower shaft.