Pivot Bearing Two-Part Locking Element Adaptability
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Solution Overview
Problem
Existing rotary bearings for pivoted sashes and doors lack stability and flexibility in adaptation to various tasks, with existing designs being inflexible and requiring significant effort to adjust for different applications.
Innovation Solution
A rotary bearing design featuring a bow-shaped fork leg with a base element and a spring element that securely connects to the bearing pin, allowing for easy adaptation of components to suit different tasks, with the base element made of high-strength materials like plastic and the spring element made of wire or sheet metal, ensuring reliable force transmission and stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a one-piece bearing fork part with an integrated spring element is used, then manufacturing simplicity is improved, but adaptability to different tasks deteriorates
Solution Approach 1:
The securing element is divided into separate components: a base element with shell and a spring element. This segmentation allows each component to be optimized independently and enables easy adaptation to different bearing pin diameters and task requirements by replacing only the necessary components rather than the entire fork part.
Solution Approach 2:
The base element with its shell design and the spring element together create a universal securing mechanism that can accommodate different bearing pin diameters. The spring element can be adjusted or replaced to suit different tasks, making the overall bearing assembly multi-functional and adaptable without requiring entirely new fork parts.
2Strength
If the spring element encompasses a wedge-shaped contour inside the bearing fork part, then securing force is improved, but flexibility and adaptability deteriorate
Solution Approach 1:
The spring element is separated from the fork part structure, allowing the wedge-shaped contour to be maintained for securing force while enabling independent replacement and adjustment of the spring element for different applications.
Solution Approach 2:
The wedge-shaped contour is localized to the spring element itself rather than being integrated into the entire fork part. This allows the local securing function to be optimized while the overall structure remains flexible and adaptable to different tasks.
3Adaptability or versatility
If a two-part securing element design with base body and spring element is used, then adaptability is improved, but device complexity increases
Solution Approach 1:
The base element with shell and spring element are designed to work together as an integrated securing mechanism that combines the advantages of both separate and integrated designs. The spring element connects the base element to the bearing pin, creating a unified structure that is adaptable yet simple in its operational principle.
Solution Approach 2:
The spring element provides automatic securing through its elastic properties, eliminating the need for complex locking mechanisms or additional fastening steps. The base element with shell and spring element work together to automatically secure the bearing pin through the spring's elastic force.
4Strength
If high-strength materials like plastic are used for the base element, then strength is improved, but manufacturing cost may increase
Solution Approach 1:
The base element is made from high-strength plastic material that combines adequate strength properties with cost-effective manufacturing. This composite approach uses engineered plastics that provide necessary mechanical strength while remaining economical compared to metal alternatives.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The design enhances stability and cost-effectiveness by allowing easy adjustment of components, ensuring reliable force support and simple assembly, while maintaining structural simplicity and flexibility for various applications.
Implementation Method 1
a spring element (10), which connects one of the two fork legs (6) to the base element (9) and the bearing pin (8)
Data Source
Figure 1
Figure 2~4
Figure 5~10
AI summary
A pivot bearing (3) for a window has a two-part locking element (7) for securing a bearing bolt (8) to a bearing fork section (4). The locking element (7) has a base element (9) made of plastic and a spring element (10) held by the base element (9), with a cup (13) for the bearing bolt (8). The pivot bearing (3) has particularly high stability and can be easily adapted to intended applications.