Concealed Hinge with Guideways for Heavy Door Stability
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Solution Overview
Problem
Concealed hinges for doors and windows with large opening angles face design complexity, wear, and tilting issues due to complicated configurations and rocker arms, which affect stability and usability, especially with heavy doors.
Innovation Solution
The hinge design incorporates support elements with guideways for one axis of rotation associated with an adjustable intermediate member, allowing for simple adjustment and optimal access, and features a dual-hinge arrangement where the upper hinge is positioned above the lower one in the fixed frame to compensate for door weight when pivoted, using cylindrical bolt-like axes and sliding blocks for stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a concealed hinge with large opening angle is designed using traditional rocker arm mechanisms, then the door can be pivoted through 180°, but the hinge becomes complex in design and production, and components are exposed to wear and tear
Solution Approach 1:
The patent removes the traditional rocker arm mechanism from the hinge system. Instead of using complex articulated rocker arms, the invention employs simple cylindrical bolt-like axes that rotate within guideways, extracting the problematic intermediate components while maintaining the 180° opening capability through a simplified support element and intermediate member arrangement
Solution Approach 2:
The hinge is divided into distinct functional modules: receiving bodies for mounting, support elements with guideways for motion control, cylindrical axes for rotation, and an adjustable intermediate member. This segmentation allows each component to perform its specific function with simple geometry, reducing overall complexity while enabling the required range of motion
2Ease of operation
If rocker arms are used to achieve concealed hinge functionality, then the hinge can be installed between door frame and door leaf, but the rocker arms cause increased tilting moment when using heavy doors
Solution Approach 1:
The rocker arms that generate excessive tilting moments are completely removed from the system. The patent replaces them with direct rotational axes that pivot within guideways, eliminating the mechanical advantage multiplication effect that causes high tilting moments while maintaining concealed installation capability
Solution Approach 2:
The guideways are positioned and oriented to provide geometric counterbalancing against the tilting moment generated by heavy doors. The support elements with properly positioned guideways create a mechanical arrangement that resists the downward force of the door weight, reducing the net tilting moment on the hinge axes
3Volume of moving object
If support elements with guideways are directly fastened in the receiving body, then the structure is compact, but adjustment of the door or window in relation to the fixed frame becomes difficult
Solution Approach 1:
The intermediate member is designed with adjustable fastening capabilities, allowing it to be positioned at different locations relative to the support elements. This dynamic adjustability enables door and window alignment modifications while maintaining the compact overall structure, as the adjustment mechanism integrates within the existing hinge volume rather than requiring additional space
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
This design achieves optimal adjustability and stability with a compact structure, enabling smooth 180° pivoting of heavy doors while minimizing sagging and ensuring proper alignment with the frame, even when closed.
Implementation Method 1
The axes of rotation 25, 27 are guided in guideways 28, 29 which are aligned at an angle alpha to the vertical from the respective receiving body 11, 12 leading away.
Implementation Method 2
They are expediently provided with sliding blocks so that surface guidance is given both laterally and on the underside in the respective guideway.
Implementation Method 3
the upper hinge is arranged above the at least one hinge arranged below it in the fixed frame in the direction perpendicular to this along the plane of the opening formed by the frame. In this way, a lowering of the door due to its own weight when it is pivoted by a possible approximately 180° can be largely compensated.
Data Source
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AI summary
A concealed hinge for doors, windows, or similar components is provided with a fixed-frame mounting body (12), a door- or window-side mounting body (11), and a hinge bracket assembly (20). This assembly consists of at least two superimposed hinge brackets (21, 22, 23) which are rotatable within the mounting bodies (11, 12) about pivot axes (24, 25, 26, 27) mounted therein and also relative to each other about a central axis (30). On one or the other side of the hinge brackets (21 and 22, 23, respectively), a pivot axis (24, 27) is guided longitudinally in guide tracks (28, 29) of support elements (31, 32) transversely to the pivot axes (24, 27). The support elements (32) with the guide rails (29) are assigned, at least in the case of the rotation axes (25, 27), an intermediate member (35) which is adjustably fixed in the respective receiving body (11, 12).This allows for easy adjustment of the door or window relative to the fixed frame, with optimal access to the adjustment mechanisms.