Concealed Door Hinge Adjusting Spindle and Multi-Axis Joint
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Solution Overview
Problem
Concealed door hinges with complex adjusting devices and large longitudinal extent are difficult to produce and require complex production processes.
Innovation Solution
A concealed door hinge design featuring a multi-axis joint with slidably guided and pivotally mounted joint bodies, utilizing an adjusting spindle and screws for adjustment, eliminating the need for additional holding plates and spacer sleeves, and simplifying the joint body shape to rectangular with only holes needing to be drilled.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a complex adjusting device with multiple holding plates and spacer sleeves is used for three-dimensional adjustment, then the adjustment capability is improved, but the device complexity and longitudinal extent increase
Solution Approach 1:
The adjusting device is segmented into functional zones: the mounting plate provides positioning in one direction, the threaded hole provides adjustment in another direction, and the clearance provides immersion space. This segmentation allows each component to perform its specific function without requiring additional holding plates or spacer sleeves, thereby reducing device complexity while maintaining adjustment capability.
Solution Approach 2:
The mounting plate serves multiple functions: it positions the housing, provides an interface for the adjusting spindle, and allows for three-dimensional adjustment when combined with the threaded hole and clearance. This multi-functionality eliminates the need for separate holding plates and spacer sleeves, reducing the overall device complexity.
2Manufacturing precision
If additional holding plates and spacer sleeves are used for adjustment, then the adjustment precision is improved, but the longitudinal extent and manufacturing complexity increase
Solution Approach 1:
The joint bodies are nested within the clearance of the housing, allowing them to be immersed in the housing when the door is closed. This nesting arrangement eliminates the need for additional holding plates and spacer sleeves that would increase the longitudinal extent, while still providing precise adjustment capability through the threaded hole and mounting plate configuration.
Solution Approach 2:
The adjustment mechanism utilizes multiple dimensions: the mounting plate provides positioning in the lateral direction, the threaded hole provides adjustment in the longitudinal direction, and the clearance provides immersion space in the depth direction. This multi-dimensional approach achieves precise adjustment without requiring additional components that would increase the longitudinal extent.
3Strength
If the joint body has a complex shape with projections, indentations, and shoulders, then the structural integrity is improved, but the ease of manufacture deteriorates
Solution Approach 1:
The joint bodies are designed with a uniform rectangular basic shape without projections, indentations, or shoulders. This homogeneous design simplifies manufacturing to basic drilling operations while maintaining structural integrity through the uniform geometry and proper material selection. The simplicity of the shape allows for easy fabrication and assembly.
4Ease of manufacture
If a multi-axis joint with slidably guided and pivotally mounted joint bodies is used, then the ease of manufacture is improved, but the device complexity may increase
Solution Approach 1:
The sliding guidance and pivotal mounting functions are merged into a single joint body design. The joint body includes a bearing body for pivotal rotation and a longitudinal guide for sliding movement, combining multiple functions into one component. This merging simplifies manufacturing compared to separate components while the modular integration into the housing and mounting plate keeps the overall device complexity manageable.
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 simplifies production, reduces the longitudinal extent, and allows for easier adjustment, resulting in a more straightforward manufacturing process and improved assembly efficiency.
Implementation Method 1
The adjusting spindle is mounted in the respective mounting plate in a stationary but rotatable manner and is accommodated in a threaded hole in the housing
Implementation Method 2
The joint bodies are slidably guided at a first end via a longitudinal guide in one of the housings
Implementation Method 3
with a guide groove for receiving a bearing body rotatably attached to one end of the joint body
Data Source
Figure 1
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Figure 3
AI summary
The invention relates to a concealed door hinge for pivotally mounting a door leaf on a door frame, comprising a first housing (1) that can be inserted into a narrow side of the door leaf or the door frame and a second housing (2) that can be inserted into the door frame or the narrow side of the door leaf, a multi-axis joint with two joint bodies (3, 4) that connects the two housings (1, 2) to each other, first and second mounting plates (7, 8) by means of which one of the housings (1, 2) is connected to the door frame or the door leaf, wherein the joint bodies (3, 4) are slidably guided at a first end in each of the housings (1, 2) via a longitudinal guide (5) and pivotably mounted at a second end via a pivot axis (22), wherein the position of one of the housings (1, 2) relative to the first mounting plates (7) arranged on it perpendicular to a front surface of the first mounting plates (7) can be changed by means of an adjusting spindle (10). is,wherein the adjusting spindle (10) is mounted in the respective mounting plate (7) in a fixed but rotatable manner and is received in a threaded bore of the housing (1, 2).