3D Adjustable Door Hinge With Eccentric Bushings
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Solution Overview
Problem
Existing three-part door hinges face challenges with restricted accessibility of adjustment mechanisms, complex construction, and high manufacturing and assembly costs due to numerous components with complex shapes, making them difficult to use and assemble effectively.
Innovation Solution
A three-dimensionally adjustable door hinge design that utilizes two serial eccentricities for adjustability in two dimensions and an adjusting screw for axial displacement, allowing for adjustability in a third dimension, with a mandrel and eccentric bushing configuration that simplifies assembly and operation without requiring detachment of the sash element.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If adjustment mechanisms are made accessible for easy operation, then ease of operation is improved, but device complexity increases due to additional components and mechanisms
Solution Approach 1:
The patent combines multiple adjustment functions into a single integrated mechanism. The adjusting screw integrates both the adjustment function and the locking function into one component, eliminating the need for separate adjustment screws and locking mechanisms. This merging approach maintains ease of operation while reducing the total number of components.
Solution Approach 2:
The adjusting screw serves multiple functions simultaneously: it acts as both the adjustment mechanism and the locking mechanism. By making this component multi-functional, the patent reduces the number of separate components needed while maintaining full adjustability and security of the hinge connection.
2Ease of manufacture
If the number of components is reduced to lower manufacturing costs, then ease of manufacture is improved, but adjustability functionality may be compromised
Solution Approach 1:
The patent merges the adjustment and locking functions into a single adjusting screw component. This integration reduces the total number of parts that need to be manufactured and assembled, lowering production costs while preserving the full range of adjustment capabilities in three dimensions.
Solution Approach 2:
The patent uses an eccentric mechanism that changes the positional parameters of the hinge leaf through rotational movement. By varying the angular position of the eccentric, the hinge can be adjusted in multiple dimensions without requiring multiple separate adjustment components, thus maintaining versatility with fewer parts.
3Device complexity
If a simple hinge design is used to reduce assembly complexity, then ease of manufacture is improved, but three-dimensional adjustability cannot be achieved
Solution Approach 1:
The patent incorporates dynamic adjustment capabilities through the eccentric mechanism, which allows the hinge to be positioned at various angles and locations during assembly. This dynamic adjustability is achieved through a relatively simple structure that can be easily assembled while providing three-dimensional positioning freedom.
Solution Approach 2:
The eccentric mechanism enables changes in positional parameters (x, y, z coordinates) through a single rotational degree of freedom. This allows three-dimensional adjustability to be achieved without proportionally increasing assembly complexity, as all adjustments are made through one adjustable component rather than multiple independent mechanisms.
4Adaptability or versatility
If multiple adjustment mechanisms are added to achieve three-dimensional adjustability, then adaptability is improved, but ease of operation deteriorates due to limited accessibility
Solution Approach 1:
The patent combines all adjustment functions into a single adjusting screw that controls the position of the hinge leaf in three dimensions. This consolidation ensures that all adjustment mechanisms are accessible through the same location, eliminating issues with limited accessibility that would arise from multiple distributed adjustment points.
Solution Approach 2:
The adjusting screw is designed as a universal adjustment component that simultaneously controls multiple degrees of freedom. This multi-functional design ensures that a single accessible location provides control over all three dimensions of hinge positioning, maintaining ease of operation while achieving full adaptability.
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
Enables easy and secure three-dimensional adjustment of the door hinge without detaching the sash element, reducing manufacturing costs and assembly complexity while maintaining a sleek and functional design.
Implementation Method 1
By means of an adjusting screw (8) located in the lower housing (6), the spindle (4) is mounted in an adjustable position relative to the frame hinge section (2)
Implementation Method 2
two eccentrics are provided, which interact in such a way that a central longitudinal axis of the central housing, parallel to the pivot axis, can be adjusted to any point within a virtual circular plane defined by the two eccentrics
Data Source
Figure 1~2
Figure 3a
Figure 3b~3e
AI summary
The invention relates to a door hinge 1 comprising a frame hinge part 2 and a sash hinge part 3, which are pivotable relative to each other about a pivot axis S via a pin 4. The frame hinge part 2 has an upper housing 5 and a lower housing 6, while the sash hinge part 3 has a middle housing 7 that can be inserted between the upper and lower housings 5, 6. The pin 4 extends through the lower, middle, and upper housings 5, 6, 7, and is rotatably mounted in the upper and lower housings 5, 6. Two eccentricities 11', 14' are provided in the middle housing 7 of the sash hinge part 3. The middle housing 7 of the sash hinge part 3 can be clamped to the pin 4 in a rotationally fixed manner, so that the sash hinge part 3 is pivotable relative to the frame hinge part 2 about the pin 4. In the unjammed state, the wing band part 3 is adjustable in 2 dimensions transverse to the pivot axis S by means of the two eccentricities 11',14'.