Hinge Reinforcement Kit for Load-Bearing Capacity
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Solution Overview
Problem
Current two-leaf hinges for doors and windows have a low loading limit, requiring the use of more expensive three-leaf hinges for intermediate load resistance, which is inefficient in terms of cost and functionality.
Innovation Solution
A reinforcement kit is introduced for two-leaf hinges, comprising a third hinge element and an extension element that transforms the hinge into a three-leaf configuration, allowing the pin to experience shearing stress instead of bending stress, thereby increasing the load-bearing capacity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a two-leaf hinge is used, then the cost is lower and the structure is simpler, but the loading limit is low (around 100 kg)
Solution Approach 1:
The hinge is divided into modular components: a base two-leaf hinge structure and a separate reinforcement kit. The reinforcement kit includes a third hinge element and an extension element that can be added to transform the hinge from two-leaf to three-leaf configuration, allowing the loading limit to be increased from 100 kg to 130 kg while keeping the base structure simple and cost-effective
2Strength
If a three-leaf hinge is used, then the loading limit is higher (around 150 kg), but the cost is considerably higher
Solution Approach 1:
The hinge configuration is made dynamic and adaptable. Users can start with a simple two-leaf hinge for lower loads and upgrade to a three-leaf configuration by adding the reinforcement kit when higher loading capacity (130 kg) is needed, allowing the system to adapt to different load requirements without always incurring the cost of a full three-leaf hinge
Solution Approach 2:
The loading capacity parameter of the hinge can be changed by adding or removing the reinforcement kit. The same base hinge structure supports different loading capacities (100 kg or 130 kg) depending on whether the reinforcement elements are installed, allowing cost-effective selection based on actual needs
3Strength
If a three-leaf hinge is used for intermediate load resistance (110 kg), then the loading limit is sufficient, but the cost is higher than necessary
Solution Approach 1:
Instead of providing a full three-leaf hinge for intermediate load requirements, the invention applies partial reinforcement through the extension element and third hinge element. This partial action provides sufficient strength for intermediate loads (110-130 kg) without the complete complexity and cost of a full three-leaf hinge configuration
Data Source
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AI summary
A hinge for doors or windows, comprising a hinge-pin (26) defining an axis of rotation (28), a first hinge element (22) and a second hinge element (24), which are articulated to one another about said axis (28) via said pin (26), the hinge including a reinforcement kit comprising an extension element (32) that can be applied by shape fit to an end of the pin (26), and a third hinge element (30) connectable to the first hinge element (22) in a pre-set position and having a hole (82) that can be engaged by said extension element (32) of the pin (26).