Hinge With Grooved Cylindrical Body And Thrust Spring
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Solution Overview
Problem
Existing hinges with multiple halt positions are complex to manufacture and mount, particularly when handling heavier loads, and often require additional mechanical supports to maintain a secure position without interfering with operation.
Innovation Solution
A hinge design featuring wing elements with cylindrical bodies and elastically yielding thrust engagement elements, including ribs and grooves, along with torsion springs, allows for secure positioning without external supports, ensuring stability across various loads and easy maintenance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional spring-sphere pairs with holes and grooves are used to retain hinge positions, then the hinge can maintain predefined secure positions, but the structure becomes complex and requires precise alignment and difficult mounting operations
Solution Approach 1:
The patent removes the complex spring-sphere pair retaining elements and replaces them with a simpler thrust spring directly engaging with a single groove in the appendix. This extraction of unnecessary components simplifies the overall structure while maintaining the secure positioning function through the groove-appending element engagement system.
Solution Approach 2:
Instead of using multiple spheres with multiple holes and grooves requiring precise alignment, the invention inverts the approach by using a single groove in the appendix that engages with a corresponding element on the fixed wing. This reversal of the engagement mechanism eliminates alignment complexity and simplifies mounting operations.
2Ease of manufacture
If ribs and longitudinal recesses are used for mutual engagement to simplify structure, then mounting becomes easier, but the hinge cannot handle heavier loads effectively
Solution Approach 1:
The patent applies local quality by concentrating the load-bearing function in the thrust spring and the groove-appending element engagement interface, while other parts of the structure can be simpler. The thrust spring provides localized elastic yielding and force distribution, enabling the structure to handle heavier loads without requiring complex engagement features throughout the entire hinge assembly.
Solution Approach 2:
The invention changes the parameter of the appendix by giving it an elastic yielding characteristic, allowing it to deform under load and distribute forces more effectively. This parameter change enables the simplified groove engagement structure to handle heavier loads by allowing controlled deformation rather than rigid engagement, preventing stress concentration and failure.
3Reliability
If multiple retaining elements are used to ensure secure positioning, then the hinge maintains stable positions, but additional mechanical supports are required which interfere with operation
Solution Approach 1:
The patent extracts and removes the additional mechanical supports such as hooks and chains that were previously needed to maintain open positions. By using the groove-appending element engagement system with thrust spring, the hinge can maintain stable positions internally without external mechanical aids, eliminating operational interference while preserving position stability.
4Reliability
If precise alignment of holes and grooves is required for effective locking, then secure positioning is achieved, but manufacturing precision requirements increase and mounting becomes difficult
Solution Approach 1:
The invention inverts the alignment requirement by designing the groove in the appendix and the corresponding engagement element such that they naturally align during assembly without requiring precise pre-alignment. The groove is positioned to engage with the thrust spring element in a way that guides the components into proper alignment during mounting, eliminating the need for high manufacturing precision and complex alignment procedures.
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 design provides a simple, durable, and cost-effective solution that maintains secure positions with high resistant torque, eliminating the need for additional mechanical supports and ensuring safety against accidental door movements.
Implementation Method 1
at least one element of thrust engagement is associated in one of said grooves, at least partly elastically yielding
Implementation Method 2
torsion spring means are furthermore provided, housed in correspondence of the pivoting area and arranged to push the door always in a secure position
Data Source
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AI summary
Hinge for supporting and manoeuvring doors, consisting of two wing-shaped elements, provided with means for the attachment to a frame part and to a door part, respectively, as well as with means for the mutual hinging of in a pivoting area, said means consisting of appendixes projecting from said wing-shaped elements, characterised in that at least one of said appendixes of a first one of said wings is shaped as a cylindrical body on the surface of which there are formed axial grooves, at a pre- set, mutual, circumferential distance, and in that with a second one of said wings, opposite to said appendix, there is associated at least one thrust-engagement element in one of said grooves, at least partly elastically yielding.