Steel Door Frame Receiving Element Snap-Fix Hinge Support
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Solution Overview
Problem
Existing receiving elements for door hinges in steel frames are insufficiently load-bearing, particularly for heavy doors like fire protection or hospital doors, as the pressing force on the steel frame causes the support to fail in securing the hinge.
Innovation Solution
A receiving element with a snap-in connection for the front leg and additional latching connections between the carrier and counterpart, along with adjustable fastening devices and enhanced structural support, ensures secure fixation and increased load-bearing capacity without complicating the assembly process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the support element is held together by pressure against the steel frame, then the assembly process is simple, but the load-bearing capacity is limited
Solution Approach 1:
The support element is divided into multiple functional components: a U-shaped carrier for mounting, a counterpart with receiving space for the hinge, and a fastening device with clamping elements. This segmentation allows each component to specialize in specific functions, enabling the overall structure to bear higher loads while maintaining assembly simplicity through modular construction.
Solution Approach 2:
The fastening device is nested within the receiving space formed by the carrier and counterpart. The clamping elements are positioned inside the receiving space to secure the hinge leaf, creating a compact nested arrangement that maximizes load-bearing capacity without increasing external dimensions or assembly complexity.
2Reliability
If the support element uses simple pressure against the steel frame, then the assembly process is easy, but it cannot securely hold heavy door leaves
Solution Approach 1:
The carrier is pre-assembled with the fastening device and clamping elements positioned within the receiving space before mounting to the steel frame. This preliminary assembly ensures that all load-bearing components are correctly positioned and secured, providing reliable fixation for heavy door leaves while maintaining simple installation at the construction site.
Solution Approach 2:
The counterpart acts as an intermediary component between the carrier and the hinge leaf. It provides a precisely fitted receiving space that guides and positions the hinge leaf, while the fastening device secures it. This intermediary structure distributes and transfers loads effectively, ensuring secure fixation without requiring complex direct connections to the steel frame.
3Strength
If additional locking connections are added to increase load-bearing capacity, then the load-bearing capacity improves, but the assembly process becomes more difficult
Solution Approach 1:
Multiple locking connections are merged into a single integrated fastening device that is pre-assembled within the receiving space. The clamping elements work together as a unified system to secure the hinge leaf, providing enhanced load-bearing capacity through combined action rather than multiple separate assembly steps, thus maintaining ease of installation.
Data Source
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AI summary
The invention relates to a receiving element for a steel frame with a support (1) comprising two side legs (5) and a U-shaped section (6) connecting the two side legs (5). Mounting flanges (7) are attached to each of the side legs (5). The receiving element further comprises a counterpart (2) which, together with the support (1), encloses a receiving space (4) and has a cover plate (9) arranged opposite the connecting leg (6). A fastening device (3) for securing a hinge leaf (13) inserted into the receiving space (4) is arranged in the receiving space (4). The fastening device (3) is supported on the connecting leg (6) and on the cover plate (9). Two contact legs (10) project from the cover plate (9), the outer surfaces of which bear against the inner surfaces of the side legs (5).A front leg (11) with a recess (12) for inserting the belt flap (13) into the receiving space (4) adjoins the front of the cover plate (9). According to the invention, the front leg (11) is attached to the carrier (1) by means of a snap-fit connection.