Toothed Hinge Assembly for Precise Angle Adjustment and Low Wear
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Solution Overview
Problem
Existing electronic apparatuses with hinge structures for adjusting and fixing rotation angles are prone to costly repairs due to precision connection part damage and wear, especially when using low-cost connections.
Innovation Solution
An electronic apparatus with a hinge structure comprising a main body, a support member, and a hinge module that includes a first hinge member with a toothed design, a second hinge member with interlocking teeth, and an elastic member, allowing for precise rotation and adjustment of the main body's angle relative to the support member, while incorporating a screw and nut mechanism for stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a highly precise connection part (gear or bearing) is used to connect the main body to the support member, then the rotation angle can be precisely adjusted and fixed, but the cost of replacement becomes excessively expensive when parts are damaged
Solution Approach 1:
The patent replaces expensive precision connection parts (gears or bearings) with a cost-effective hinge structure consisting of a hinge body, hinge arm, and elastic member. This hinge structure achieves the required rotation angle adjustment and fixation functionality at a much lower cost, making replacement economical even if damage occurs. The hinge structure eliminates the need for costly precision components while maintaining functional requirements.
2Ease of repair
If a low-cost connection part is used to connect the main body to the support member, then the replacement cost is reduced, but wear and damage to the connecting part occur easily during rotation
Solution Approach 1:
The patent incorporates an elastic member (such as a spring or elastic deformation element) within the hinge structure that provides continuous contact and adaptive pressure between the hinge arm and hinge body during rotation. This elastic pressure distributes loads evenly, reduces point-contact wear, and enhances the durability of the low-cost hinge components, preventing easy wear and damage while maintaining cost-effectiveness.
3Measurement precision
If a hinge structure with tooth engagement is used to fix rotation angles, then precise angle control is achieved, but the structure becomes more complex
Solution Approach 1:
The patent divides the hinge structure into distinct functional segments: a hinge body with teeth, a hinge arm with corresponding teeth, and an elastic member. This segmentation allows each component to perform its specific function (positioning, movement, and pressure application) independently, simplifying the overall design and manufacturing while achieving precise rotation angle control through tooth engagement at multiple discrete positions.
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 solution provides a cost-effective and durable method for adjusting and fixing the rotation angle of the main body, reducing wear and damage, and enabling precise control with haptic feedback through the engagement of teeth and elastic pressure.
Implementation Method 1
an elastic member disposed between the main body and the first hinge member to press the first hinge member
Implementation Method 2
a screw passing through the support member and the second hinge member to be engaged with the nut
Implementation Method 3
a first tooth formed in a circumferential direction at a second end of the first hinge member, a second hinge member having a first end fixed to the support member and a second end where a second tooth engaged with the first tooth is formed
Data Source
AI summary
An example electronic apparatus may include a main body having an upper surface at which a projection lens is disposed and a side surface at which a nut is disposed; a support including a base plate and a support member having a first end connected to the base plate and a second end facing the side surface of the main body; and a hinge module configured to rotatably connect the main body to the support member, wherein the hinge module includes a first hinge member having a first end fixed to the side surface of the main body and a second end at which a first teethed part is formed and a second hinge member having a first end fixed to the support member and a second end at which a second teethed part configured to engage with the first teethed part is formed.