Angle-Limiting Hinge With Riveted Limiting Block
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Solution Overview
Problem
Conventional hinges in notebook computers are prone to wear and require complex metallic assemblies, leading to errors and defects, especially when integrating rotational angle-limit functions, which complicates fabrication and reduces reliability.
Innovation Solution
An angle-limiting hinge design comprising a stationary leaf, a pivoting leaf, a pintle, and a limiting element, where the pintle is statically mounted in the stationary leaf and rotatably in the pivoting leaf, with a C-shaped limit and a limiting block that uses riveting to secure the limiting element, allowing for easy fabrication and precise rotational angle control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If conventional metallic assembly methods are used for hinge fabrication, then structural strength is maintained, but fabrication complexity increases and defects occur
Solution Approach 1:
The hinge is divided into distinct modular components: stationary leaf, pivoting leaf, pintle, and limiting element. Each component can be manufactured separately using simpler processes and then assembled, reducing overall fabrication complexity while maintaining structural integrity through designed connection interfaces.
Solution Approach 2:
The pintle serves as an intermediary component that connects the stationary and pivoting leaves. By introducing this intermediate element, the hinge achieves reliable rotational functionality without requiring complex direct connections between the leaves, thereby simplifying the overall assembly process.
2Adaptability or versatility
If rotational angle-limit functions are integrated into conventional hinge design, then angle control capability is improved, but device complexity increases
Solution Approach 1:
The angle-limiting function is segmented into a separate limiting element with limiting blocks, rather than being integrated into the main hinge body. This modular approach adds angle control capability while keeping the core hinge structure simple and easy to manufacture.
Solution Approach 2:
The rotational angle-limit function is extracted as a distinct component (limiting element with limiting blocks) that can be independently designed and assembled. This separation allows the hinge to gain angle control versatility without increasing the complexity of the primary hinge mechanism.
3Strength
If complex metallic assembly procedures are used, then structural integrity is maintained, but productivity is reduced
Solution Approach 1:
By segmenting the hinge into pre-manufacturable modules (leaves, pintle, limiting element), each component can be produced using optimized, simpler processes. The modular design enables parallel manufacturing of components, significantly improving productivity while maintaining structural integrity through designed connection interfaces.
Solution Approach 2:
Components are prepared and pre-assembled in advance as modular units. The stationary and pivoting leaves can be manufactured and prepared separately before final assembly, allowing for more efficient production scheduling and reducing overall fabrication time while ensuring quality control at each stage.
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 simplifies the fabrication process, reduces defects, and allows for customizable hinge designs with reduced complexity and cost, while ensuring reliable rotational angle limitation, thereby enhancing productivity and portability of notebook computers.
Implementation Method 1
rubs against the inner surface of the at least one sleeve (11) to generate friction to hold the pivoting leaf (10) in various positions
Data Source
AI summary
An angle-limiting hinge has a stationary leaf, a pivoting leaf, a pintle and a limiting element. The pintle is mounted statically in the stationary leaf and rotatably in the pivoting leaf, thereby allowing the leaves to rotate relative to each other and the pintle has a limit. The limit is C-shaped, formed diametrically around the pintle and comprises two ends being positive stops. The limiting element is mounted around the pintle and is secured to the pivoting leaf and has a limiting block mounted securely in the limiting element using riveting. The limiting block is disposed between the positive stops of the limit to limit relative rotational angles of the leaves. Accordingly, the angle-limiting hinge fastens and facilitates fabrication and is capable of limiting the rotational angle of the leaves.