Pivot Hinge Fitting Reinforcement Plate Load Distribution
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Solution Overview
Problem
Pivot hinge fittings for roof windows are complex and costly to manufacture and maintain, and they often fail to effectively distribute and transfer large loads, especially when space is limited and heavier materials are not viable.
Innovation Solution
Incorporating reinforcement elements that cooperate with fastening means to distribute and transfer loads to connected structures, including a reinforcing element on the frame hinge part and a reinforcement plate on the sash hinge part, along with strategically positioned fastening elements to secure load transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If traditional metal parts are used to withstand forces, then the hinge fitting can bear large loads, but the manufacturing and assembly costs are considerable and the design is complex
Solution Approach 1:
The patent combines multiple metal parts into integrated components. The frame hinge part integrates the base plate, guidance elements, and reinforcement structure into a single component, while the sash hinge part combines the base plate and reinforcement plate. This merging reduces the total number of parts while maintaining load-bearing capacity through strategic reinforcement at critical stress points.
Solution Approach 2:
The patent employs composite construction by combining metal reinforcement elements (base plates, reinforcement plates) with plastic components (cover, guide block). The metal parts provide structural strength and load-bearing capacity, while the plastic parts provide guidance and reduction of friction, creating a composite hinge fitting that optimizes both strength and complexity.
2Strength
If heavier material is chosen to withstand larger loads, then the load-bearing capacity increases, but the space available is limited and manufacturing becomes less viable
Solution Approach 1:
The patent applies local quality by providing reinforcement specifically at critical areas rather than uniformly throughout the entire hinge fitting. The frame hinge part has a reinforcement structure integrated into its base plate, and the sash hinge part has a separate reinforcement plate, concentrating metal material where loads are highest while using lighter plastic material in less critical areas.
Solution Approach 2:
The patent transitions from two-dimensional planar reinforcement to three-dimensional spatial reinforcement. The reinforcement elements are positioned at specific depths and orientations within the hinge assembly, creating a multi-layered load distribution system that maximizes strength within the limited space available between the frame and sash.
3Reliability
If multiple metal parts are used to transfer loads, then the load transfer is effective, but the hinge fitting requires occasional lubrication and maintenance
Solution Approach 1:
The patent replaces traditional mechanical friction-based guidance systems with a refined guidance mechanism. The guide block with guidance elements provides precise movement control with reduced friction, minimizing the need for lubrication and maintenance while maintaining effective load transfer through the reinforced metal structures.
Data Source
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AI summary
The pivot hinge fitting comprises a frame hinge part (100) having a base plate (101) and a guidance including a guide block (130), and a sash hinge part (200) having a base plate (201). The frame hinge part (100) is adapted to be connected to a frame structure and the sash hinge part (200) to be connected to a sash structure by means of fastening means. The pivot hinge fitting includes a plurality of reinforcement elements including at least one reinforcement element adapted to cooperate with the fastening means. In particular, a reinforcement element in the form of a reinforcement plate (260) is connected to the base plate (201) of the sash hinge part (200), the reinforcement plate (260) being provided with an aperture adapted to receive supplemental fastening means displaced from the base plate (201) of the sash hinge part (200).