Two-Stage Force Hinge With Axial Support for Stable Adjustment
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Solution Overview
Problem
Existing hinges, particularly two-stage force hinges, lack adjustability and stability, leading to potential deformation and failure of the adjusting unit when excessive pressure is applied, rendering them unusable.
Innovation Solution
A novel two-stage force hinge design featuring a support unit, damping assembly, and adjusting unit that provide axial support to the damping holder and adjusting unit, limiting movement and preventing deformation, along with a torsion spring mechanism for controlled hinge operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the adjusting unit is screwed by inserting and pressing a screwdriver into the cross recess, then the telescopic stroke of the damping assembly can be adjusted, but excessive pressure may cause the adjusting unit to press against the damping holder, leading to sinking and potential failure
Solution Approach 1:
The patent introduces a support shaft as an intermediary component between the hinge arm and the damping holder. This support shaft provides axial support to the damping holder, preventing it from sinking when pressure is applied to the adjusting unit during screwing. The support shaft acts as a mediator that bears the load and protects the adjusting unit from excessive pressure, thereby resolving the contradiction between ease of adjustment and reliability.
2Device complexity
If the adjusting unit is designed without additional support structures, then the device complexity is reduced, but the adjusting unit may cave in and fall out when pressure is applied
Solution Approach 1:
The patent segments the hinge structure into distinct functional components: the hinge arm, the damping holder, the support shaft, and the adjusting unit. By separating the support function (provided by the support shaft) from the adjustment function (provided by the adjusting unit), the design maintains relative simplicity while ensuring structural integrity. The support shaft is a simple cylindrical component that provides necessary support without adding complex mechanisms.
3Reliability
If the damping holder is made more robust to prevent sinking, then the reliability improves, but the manufacturing precision and material requirements increase
Solution Approach 1:
The patent extracts the support function from the damping holder and assigns it to a dedicated support shaft component. This allows the damping holder to be designed for its primary function of housing the damping mechanism without needing to be overly robust for supporting the adjusting unit. The support shaft, being a simple cylindrical component, can be manufactured with standard precision, avoiding the need for complex high-precision manufacturing of the damping holder.
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
Ensures stable and reliable operation of the hinge by preventing the adjusting unit from sinking or falling out, allowing for proper adjustment and maintaining hinge functionality.
Implementation Method 1
a first torsion spring sheathed on a first rotary shaft provided at the front end of the hinge arm
Data Source
AI summary
A novel two-stage force hinge, including a hinge arm, a damping assembly, an adjusting unit for changing a telescopic stroke of the damping assembly is pivotally connected to the hinge arm and can rotate relative to the hinge arm, and a hinge cup pivotally connected to the hinge arm, wherein the damping assembly includes a damping holder, a damping sleeve and a linear damper, the hinge arm is provided with a support unit which is in a jacking fit with the damping holder, and the support unit is used to provide the damping holder and the adjusting unit with a support force along the rotating axial direction of the adjusting unit, effectively mitigating the risk that the adjusting unit caves in and falls out, ensuring that one can screw and adjust the adjusting unit properly with better reliability and stability.