Auxiliary Door Support with Cable-Rod Load Transfer for Heavy Leaves
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Solution Overview
Problem
Existing swing leaf doors or windows with large-sized leaves face severe stress on hinges, leading to failures, increased production costs, and difficult maintenance due to the use of oversized and hard-to-find reinforced hinges.
Innovation Solution
An auxiliary support device comprising a cable and a support rod system that transfers the weight of the leaf to the frame, relieving standard hinges, allowing standard hinges to support heavy leaves without oversizing, and simplifying maintenance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If reinforced hinges are used to support heavy leaves, then the bearing capacity and safety of the door or window is improved, but the production cost increases and maintenance becomes more difficult
Solution Approach 1:
The invention divides the load-bearing function into two separate components: standard hinges for rotation and an auxiliary support device for weight bearing. The auxiliary device includes a support element that can be activated to bear the weight of the leaf, allowing standard hinges to be used instead of reinforced ones, thereby reducing production costs while maintaining safety
Solution Approach 2:
The auxiliary support device acts as an intermediary between the heavy leaf and the standard hinges. When activated, the support element (such as a cable, rod, or arm) transfers the weight load from the hinges to the frame, allowing standard hinges to handle only the rotational function, thus eliminating the need for expensive reinforced hinges
2Reliability
If reinforced hinges are used to support heavy leaves, then the safety and reliability is improved, but the adaptability to different leaf types decreases
Solution Approach 1:
The auxiliary support device is designed with universal mounting options that can accommodate different types of leaves (wooden, metal, glass, etc.) and different door/window configurations. The support element can be adjusted in length, position, and activation mechanism to suit various applications, providing both high reliability and broad adaptability
3Strength
If reinforced hinges are used to support heavy leaves, then the load-bearing capacity is improved, but the ease of repair and availability of spare parts worsens
Solution Approach 1:
The invention uses standard, commercially available hinges instead of specialized reinforced hinges. These standard hinges are widely produced, easily replaceable, and have readily available spare parts. The auxiliary support device is designed to be simple and maintainable, with components that can be easily replaced if needed
Data Source
Figure 1A~1B
Figure 2A~2B
Figure 3
AI summary
An auxiliary support device (1) for doors or windows with at least one hinged leaf, comprising a frame block (2) and a plate (3) installed on the leaf (A) of a door or window. Furthermore, the device (1) comprises a cable (4) having an upper end (5) and a lower end (6) constrained respectively to said frame block (2) and to a lower connection portion (3A) of the plate (3) so that a reversible movement of the leaf (A) from the closed position to the open position results in a reversible switch of the cable (4) between a loose configuration and a tensioned configuration, in which it supports the weight of the leaf (A), transferring it to the frame block (2). The device (1) comprises a support rod (7) and a thrust-bearing element (11) operatively associated so that the reversible movement of the leaf (A) from the closed position to the open position results in the reversible sliding of the support rod (7) from an active configuration, in which the upper end (9) of the support rod (7) is in abutment against the thrust-bearing element (11) to transfer at least in part the weight of the leaf (A) to the frame block (2), and an inactive configuration, in which the upper end (9) of the support rod (7) is not in abutment against said thrust-bearing element (11).