Concealed Door Hinge Nested Housing Adjustment
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Solution Overview
Problem
Concealed door hinges with existing multi-axis joints are complex and costly to manufacture, with a significant longitudinal extension due to their adjustment mechanisms, making them difficult to produce and install efficiently.
Innovation Solution
A concealed door hinge design where the inner housing body is detachably fixed to the outer housing body using adjusting screws, allowing for adjustment perpendicular to the axis of rotation and insertion direction, with spacers to reduce longitudinal extension and prevent shifting, and utilizing sheet metal parts for cost-effective production.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If adjusting screws and multi-axis joints are used for three-dimensional adjustment, then adjustability is improved, but device complexity and manufacturing cost increase
Solution Approach 1:
The hinge is divided into two separate housing bodies (inner and outer) that can be independently adjusted relative to each other. The inner housing body contains the multi-axis joint while the outer housing body provides the adjustment interface, allowing complex three-dimensional adjustment to be achieved through simple relative movement of segmented components rather than a complex integrated adjustment mechanism
Solution Approach 2:
The inner housing body is nested within the outer housing body, with the inner housing body containing the multi-axis joint and the outer housing body providing the adjustment structure. This nested arrangement allows the adjustment screws to move the inner housing body relative to the outer housing body along elongated holes, achieving three-dimensional adjustability without requiring complex external adjustment devices
2Adaptability or versatility
If adjustment mechanisms are added for three-dimensional positioning, then adjustability is improved, but longitudinal extension increases
Solution Approach 1:
The adjustment screws are designed to move the inner housing body dynamically relative to the outer housing body along elongated holes. This dynamic adjustment mechanism allows the hinge to achieve three-dimensional positioning capability while maintaining a compact longitudinal profile, as the adjustment occurs through controlled movement within the existing housing structure rather than through extension of external adjustment components
3Ease of operation
If detachable fixing with adjusting screws is used, then ease of adjustment is improved, but manufacturing precision requirements increase
Solution Approach 1:
The adjusting screws act as intermediary elements between the inner and outer housing bodies. These screws engage with elongated holes in the outer housing body and thread into the inner housing body, providing a controlled interface for adjustment. This intermediary mechanism allows for easy manual adjustment while the precision requirements are localized to the screw-hole interfaces rather than requiring high precision across the entire housing assembly
Solution Approach 2:
The adjustment screws enable changes in positional parameters of the inner housing body relative to the outer housing body. By rotating the screws, the position of the inner housing body can be precisely adjusted along the elongated holes, allowing for easy modification of installation parameters without requiring high precision in the base manufacturing of the housing bodies themselves
Data Source
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AI summary
The present invention relates to a concealed door hinge (1) for pivotally mounting a door leaf on a door frame, comprising a first hinge part (2) mountable on the door frame, a second hinge part (3) mountable on the door leaf, and a multi-axis joint (4) connecting the first hinge part (2) and the second hinge part (3), wherein the first hinge part (2) has a first housing (5) that can be inserted into the door frame, wherein the second hinge part (3) has a second housing (6) that can be inserted into the narrow side of the door leaf, wherein each of the housings (5, 6) has two housing bodies (51, 52, 61, 62) arranged inside one another, wherein the housing bodies (51, 52, 61, 62) of at least one of the housings (5, 6) are adjustable relative to each other in the installed state of the concealed door hinge (1).