Hinge Wearing Element Metal Outer Plastic Inner Ring
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Solution Overview
Problem
Existing wearing rings for hinges are prone to being lost during fitting or removal, and multipart hinge elements are not user-friendly or secure, leading to frequent replacement and operational issues.
Innovation Solution
A one-part wearing element comprising a plastic inner ring and a metal outer ring, where the metal ring surrounds the plastic ring with cooperating retaining means, forming a single unit with a passage only in the plastic ring, providing a smaller tolerance for the hinge pin and enhanced wear resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a metal wearing ring is used, then wear resistance is improved, but the risk of being lost during fitting or removal increases
Solution Approach 1:
The patent applies nesting by placing a plastic inner ring inside a metal outer ring, where the plastic ring is retained within the metal ring's opening. This nested structure combines the wear resistance of metal with the secure retention properties of the plastic component, preventing the wearing element from being lost during fitting or removal operations.
Solution Approach 2:
The patent employs composite materials by combining metal and plastic in a single wearing element structure. The metal outer ring provides durability and wear resistance, while the plastic inner ring offers secure retention and ease of operation. This composite approach resolves the contradiction between wear resistance and retention security by leveraging the complementary properties of different materials.
2Ease of operation
If a wearing ring with large tolerance passage is used, then ease of fitting and removal is improved, but the risk of being lost increases
Solution Approach 1:
The patent applies local quality by providing the passage only in the plastic inner ring, which has favorable retention properties. The metal outer ring maintains structural integrity and wear resistance, while the plastic ring's passage is designed with appropriate tolerance for easy operation. This localized placement of the passage in the plastic portion resolves the contradiction between ease of operation and retention security.
3Stability of the object's composition
If a one-part metal wearing ring is used, then structural integrity is improved, but ease of fitting and removal deteriorates
Solution Approach 1:
The patent uses composite materials to resolve this contradiction by combining metal and plastic in a one-part wearing element. The metal outer ring ensures structural integrity and stability, while the plastic inner ring provides ease of fitting and removal through its deformable passage. This composite structure maintains unity and structural integrity while enabling easy operation.
Solution Approach 2:
The patent applies parameter changes by utilizing the different mechanical properties of metal and plastic materials. The plastic component allows for temporary deformation during fitting and removal operations, then returns to its original shape, providing ease of operation while maintaining structural integrity through the metal outer ring.
Data Source
Figure 1a~1c
Figure 2a~2g
Figure 3a~3g
AI summary
The present invention relates to a wearing element for a hinge comprising a one-part body (1) with at least one wearing surface (3 a), in which a passage (4) for a hinge pin is provided, comprising a portion (2) made of plastic and a portion (3) made of metal, preferably a metal outer ring and a plastic inner ring, in which the passage (4) is only provided in the plastic portion (2), and in which the metal portion (3) forms at least a part of the wearing surface. This makes a smaller tolerance with respect to the associated hinge pin possible, whereas the wearing elements can easily be fitted and replaced and are also sufficiently resistant to wear.