Swivel Eyebolt Assembly With Retaining Ring Part Retention
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Solution Overview
Problem
Existing eyebolts for lifting and securing loads are complex to assemble and require specialized bolts, which can lead to parts being lost or not securely attached during initial assembly and use.
Innovation Solution
A rotatably and pivotably mounted eyebolt design featuring a one-piece ring body with a connecting bridge and opposing pins, a bearing disk with recesses and snap rings for secure mounting, and a standard screw bolt with a stepped shoulder to prevent axial displacement, along with a clamping mechanism using a helical compression spring to hold the ring body in position.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a standard screw bolt with stepped shoulder is used instead of specialized bolts, then ease of manufacture and ease of operation are improved, but initial assembly security may be compromised
Solution Approach 1:
The patent introduces intermediate retaining elements (snap rings, retaining rings, or interference fits) that act as mediators between the standard screw bolt and the bearing disk assembly. These intermediaries ensure secure initial assembly while allowing the use of standard, easily manufactured bolts, thus resolving the contradiction between ease of manufacture and assembly security.
2Device complexity
If the bearing disk is designed with recesses for pin insertion from the underside, then device complexity is reduced and assembly is simplified, but additional securing mechanisms are required to prevent part loss
Solution Approach 1:
The patent uses snap rings or retaining rings as intermediary securing elements that engage with the recesses in the bearing disk. These intermediaries provide the necessary part retention while maintaining the simplified recess design, resolving the contradiction between reduced device complexity and reliable part retention.
3Manufacturing precision
If the ring body is designed as a one-piece forged component, then manufacturing precision and structural integrity are improved, but device complexity increases due to the integrated design
Solution Approach 1:
The patent merges the ring body into a single integrated forged component that combines the eyelet section, coupling section, and pin support structures. This merging improves manufacturing precision and structural integrity by eliminating joints and weak points, while the overall device complexity is managed through the use of standard components and straightforward assembly procedures.
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 simplifies assembly, ensures secure attachment to loads, prevents parts from being lost, reduces noise through reduced rattling, and allows for easy installation without specialized bolts, maintaining secure and stable operation.
Implementation Method 1
a clamping means is used in the area of the recess of the bearing disk, such that a clamping force is exerted on at least one pin of the annular body
Data Source
Figure 1~3
Figure 4~5
Figure 6
AI summary
A ring bolt (1) for fastening to a load to be lifted or to a loading platform, comprising a screw bolt (14) and a ring body (2) rotatably and pivotably mounted on the screw bolt (14), wherein the ring body (2) has an upper eyelet section (3) and a coupling section (4) located below it, wherein two opposing pins (7) of the ring body (2) are pivotably arranged in recesses (8) of a bearing disk (9) in the coupling section (4) and the bearing disk (9) is rotatably mounted about the screw bolt (14), characterized in that an outer retaining ring (10) is positively engaged in a bottom surface (12) of the bearing disk (9) such that the pins (7) of the ring body (2) are held in the recesses (8) by the retaining ring (10).