Parabolic Ring Gear Hinge for Compact Door Installation
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Solution Overview
Problem
Existing door hinges for windows and doors face issues with kinematics requiring large installation space and instability due to exposure to forces when closed, leading to a need for improved designs that can stably absorb large forces and allow for efficient opening movements with a smaller width.
Innovation Solution
A hinge design featuring a parabolic or elliptical ring gear at the connecting end of the hinge bracket, which aligns perpendicularly to the toothed running surface, allowing for a defined stop position and progressive translational adjustment with increasing rotation, along with a compact design and noise-damping materials, ensuring stability and reduced wear.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a circular ring gear is used in the hinge bracket, then the hinge allows for smooth rotational movement, but the receiving body requires a large width to accommodate the kinematics
Solution Approach 1:
The patent applies curvature by changing the ring gear from a circular shape to an elliptical shape. The elliptical ring gear has different radii of curvature in different directions, which modifies the kinematic path of the hinge bracket. This curved geometric transformation allows the hinge to achieve the required rotational movement while reducing the lateral space needed in the receiving body, directly resolving the contradiction between smooth rotation and compact width.
2Device complexity
If the hinge bracket is exposed to forces when the hinge is closed, then the hinge structure is simplified, but the hinge closure state becomes unstable
Solution Approach 1:
The patent extracts the force-bearing function from the hinge bracket by introducing a separate stop element. The stop element is positioned to contact the hinge bracket when the hinge is in the closed position, effectively taking out the force absorption function from the main hinge bracket structure. This allows the hinge bracket to remain simple while the stop element provides the necessary stability and force resistance, resolving the contradiction between structural simplicity and closure stability.
3Manufacturing precision
If the ring gear has a constant ratio kinematics, then the rotational and linear movements are consistent, but the installation space increases
Solution Approach 1:
The elliptical ring gear introduces variable kinematic ratios through its curved geometry. As the hinge bracket rotates, the distance from the rotation center to the toothed running surface varies continuously due to the elliptical shape. This variable curvature allows the hinge to achieve both rotational and linear movements with changing ratios, optimizing the space utilization in the receiving body while maintaining precise control over the door leaf movement throughout the opening sequence.
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 enables the hinge to stably absorb large forces, provide a compact installation space, and minimize wear and noise, allowing for a wider opening angle while maintaining structural stability and reducing exposure to forces during closure.
Implementation Method 1
the hinge bracket having a connecting end with a toothed ring, which, during a pivoting movement of the hinge bracket about its joint axis between a strap closing position and a strap opening position, rolls on a toothed running surface arranged on the inside of the holding body
Implementation Method 2
The ring gear consists of a noise-damping material, preferably plastic. A suitable combination of materials between the material of the ring gear and the toothed running surface arranged on the inside of the receiving body can ensure low wear and low rolling noise when opening and closing the door hinge
Data Source
Figure 1A
Figure 1B~1C
Figure 1D
AI summary
The invention relates to a hinge for doors or windows comprising a receiving body 1 and a hinge arm 2, which is rotatably mounted within the receiving body 1 about a pivot axis 3, wherein the pivot axis 3 is slidably guided in the receiving body 1 along a guide track 4, and wherein the hinge arm 2 has a connecting end with a toothed ring 5 which, during a pivoting movement of the hinge arm 2 about its pivot axis 3 between a hinge-closed position and a hinge-open position, rolls on a toothed running surface 6 arranged on the inside of the receiving body 1. According to the invention, the hinge arm 2 has a stop surface 7 which, in the hinge-closed position, rests against a bottom surface 8 of the receiving body 1.The toothed ring 5 at the connecting end of the hinge bracket 2 has the shape of a parabola or a section of an ellipse, the long semi-axis of which is aligned perpendicular to the toothed running surface 6 on the inside of the receiving body 1 in the hinge closing position.