Plastic Hinge Structure for Display Device
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Solution Overview
Problem
Conventional hinge structures for display devices require numerous components and screws, leading to complex assembly, potential loosening due to external shaking, and the need for additional exterior components, increasing costs and complexity.
Innovation Solution
A hinge structure comprising a rotary body and support made of plastic, with a metallic key bracket and metal rotary shaft, eliminating the need for screws and separate exterior components, and utilizing a friction spring for stability, thereby simplifying assembly and reducing component count.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If metal brackets and screws are used to assemble the hinge, then the hinge can be formed with multiple components, but the assembly structure becomes complicated and the screw may loosen due to external shaking
Solution Approach 1:
The patent combines multiple separate metal bracket components into a single integrated plastic hinge body through injection molding. The rotary body and support bracket are merged into one piece, eliminating the need for separate brackets and screws, thereby simplifying the assembly structure while maintaining hinge stability.
Solution Approach 2:
The patent replaces the mechanical screw-fastening system with an integrated plastic structure. Instead of using screws to connect metal brackets, the hinge is formed as a single molded part with built-in connection features, substituting a complex mechanical assembly system with a simpler monolithic structure that resists loosening from external shaking.
2Reliability
If separate exterior components are provided to prevent exposure of the hinge, then the hinge is protected, but the number of components and costs increase
Solution Approach 1:
The patent merges the hinge functional components with the exterior housing into a single integrated structure. The plastic hinge body serves both as the functional hinge mechanism and as the exterior cover, eliminating the need for separate exterior protection components while maintaining protective function.
Solution Approach 2:
The plastic hinge body performs multiple functions simultaneously: it provides the hinge rotation mechanism, structural support, and exterior protection. This multi-functional design eliminates the need for separate dedicated exterior components, reducing the total number of parts while maintaining protective capabilities.
3Ease of manufacture
If multiple metal components are used in the hinge, then the hinge can be assembled, but manufacturing costs and assembly complexity increase
Solution Approach 1:
The patent combines multiple metal bracket components into a single plastic hinge body manufactured through injection molding. This merging reduces the number of discrete parts from multiple metal components to one integrated plastic piece, significantly simplifying both manufacturing and assembly processes.
Solution Approach 2:
The patent substitutes a multi-component metal mechanical assembly system with a single plastic molded part. This replacement eliminates the need for multiple fasteners, joints, and connections, making the manufacturing process more efficient and assembly much easier while reducing the total quantity of components.
Data Source
AI summary
Provided are a hinge and a stand for a display device. The hinge includes a rotary body fixed to a display device; a support fixed to a base; a key bracket inserted in the rotary body; a hole formed inside the key bracket; and a rotary shaft inserted to the hole and the support and being a rotation axis of the rotary body. Thus, the hinge and stand may be manufactured at low costs because a small number of components are used. Also, the hinge structure effectively stands against the external vibration because no screw is used during an assembling process, and forming an exterior of the hinge in itself eliminates need to use a separate component for the exterior, thereby reducing the manufacturing costs of the stand.