Concealed Door Hinge Guide Slot Integration
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Solution Overview
Problem
Conventional concealed hinges for doors are difficult to assemble, have complex manufacturing requirements, and lack sufficient load-bearing capacity, making them unsuitable for heavy doors or high actuation loads.
Innovation Solution
A hinge design featuring a pivot bracket with a guide slot and a housing guide element, allowing for easy assembly and high load-bearing capacity, with a quarter-rod shaped swivel bracket and multiple screws for stability, and optional sliding friction reduction coatings for reduced wear.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If conventional concealed hinges use guide tracks arranged in covers screwed to the housing, then the hinge can be concealed within the rebate, but the assembly becomes difficult and manufacturing becomes complex due to the large number of components and precise fit requirements
Solution Approach 1:
The guide tracks are integrated directly into the housing structure rather than being separate covers screwed to the housing. This merging of the guide track function into the housing body eliminates the need for separate cover components and simplifies assembly while maintaining the concealed hinge functionality.
Solution Approach 2:
The housing structure serves multiple functions simultaneously: it provides the main structural enclosure, incorporates the guide tracks for pivot movement, and eliminates the need for separate cover components. This multi-functionality reduces the total component count and simplifies manufacturing.
2Reliability
If the guide tracks are arranged in covers screwed to the housing, then the hinge can be concealed, but a significant portion of holding and actuating forces must be transferred to the frame via the guide rails, requiring sufficient stability and precise fit
Solution Approach 1:
The guide tracks are built into the housing structure itself, creating an integrated connection system that eliminates the need for separate screwed covers. This integration ensures stable force transmission from the pivot bracket to the housing and subsequently to the frame, while simplifying the overall connection system.
3Strength
If the pivot bracket uses a guide plate connected by screws with spring force, then the guide plate can clamp the guide element, but the spring force can be overcome under heavy loads, causing the guide plate to lift off and develop uncontrollable play
Solution Approach 1:
The spring-force-based clamping mechanism is replaced with a direct mechanical guide slot engagement system. The guide slot in the pivot bracket works in conjunction with the guide element in the housing to provide stable, load-bearing guidance without relying on spring force that can be overcome under heavy loads.
Solution Approach 2:
The guide mechanism is segmented into distinct functional elements: the guide slot in the pivot bracket and the guide element in the housing. This segmentation allows for precise geometric guidance that maintains stability under load without the need for spring-force-based clamping.
4Strength
If the pivot bracket comprises an approximately quarter-bar-shaped band section fastened by multiple screws, then high stability and load-bearing capacity are achieved, but the manufacturing complexity increases
Solution Approach 1:
The pivot bracket is segmented into functional components including the quarter-bar-shaped band section and the guide slot element. This segmentation allows for optimized manufacturing of each component while maintaining overall structural integrity and load-bearing capacity.
Data Source
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Figure 5
AI summary
A strap (200) for pivotally connecting a leaf (F) to a frame (R), in particular a door leaf to a door frame, has a housing (101) that can be fastened to the frame (R), and a pivot bracket (110) that is mounted in the housing (101) and can be fastened to the leaf (F). The pivot bracket (110) comprises a guide slot (132) having guide surfaces (115, 131), and the housing (101) comprises a guide element (106), on which the guide surfaces (115; 131) are guided, so that the pivot bracket (110) can be displaced with respect to the housing (101) along the path predetermined by the guide slot (132).