Swing door fitting and shower partition
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Solution Overview
Problem
Existing rotary leaf fittings for swing doors and shower partitions face challenges in cost-effective production, simple assembly, and maintaining a tight seal while allowing for easy cleaning and resistance to dirt and water penetration.
Innovation Solution
A rotary leaf fitting design featuring a bearing element and an axle device with a second fitting device that allows for flush transitions in both open and closed states, minimizing gaps for a tight seal and incorporating a spring-loaded tappet for secure locking with minimal wear resistance, and a compact structure with flush surfaces for easy cleaning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the bearing element and fitting device are designed with protruding edges and gaps, then the structure is simpler to manufacture, but water and contamination can penetrate into the axle device causing maintenance issues
Solution Approach 1:
The patent merges the bearing element and fitting device surfaces to form continuous flush surfaces. The first bearing outer surface and first fitting outer surface are aligned flush with each other, eliminating gaps and protruding edges that would otherwise allow water and contamination penetration. This integration maintains seal tightness while simplifying the overall structure.
Solution Approach 2:
The patent extracts the problematic features of protruding edges and gaps from the design. By designing the bearing element and fitting device to have flush-aligned surfaces, the extraction removes the pathways for contamination while maintaining structural integrity and manufacturing feasibility.
2Ease of manufacture
If the bearing element and fitting device have flush surfaces, then cleaning becomes easier and contamination is prevented, but the manufacturing precision requirements increase
Solution Approach 1:
The flush surfaces serve multiple functions simultaneously: they provide easy cleaning by eliminating crevices, prevent contamination penetration, and maintain structural alignment. The first bearing outer surface and first fitting outer surface being flush creates a multi-functional solution that addresses cleaning, sealing, and structural requirements.
3Adaptability or versatility
If the door leaf can be pivoted in both directions from closed position, then the swing door functionality is improved, but the bearing element requires additional surfaces and complexity
Solution Approach 1:
The bearing element is designed with asymmetric surface configurations to accommodate bidirectional pivoting. The first bearing outer surface corresponds to one pivoting direction while the second bearing outer surface corresponds to the opposite direction. This asymmetric design enables versatile door movement while maintaining a relatively simple block-shaped structure.
Data Source
Figure 1~2
Figure 3
Figure 4~5
AI summary
The fittings (1) have a frame attached to a first fitting device (4) with a support element. An axle unit is rotatably arranged in the support element about a rotation axis. The axle unit is rotatably connected with a second fitting device (5). The support element comprises first and second support outer surfaces that are defined parallel to a door (2). The second fitting device comprises a fitting outer surface that is defined parallel to the door leaf. The first support outer surface is flushed with the fitting outer surface in a closed state of the door leaf.