Flanged Shrink-Fit Collar Structure to Prevent Ring Buckling
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Solution Overview
Problem
Conventional shrink-fit rings face issues with buckling during the shrinking process when using insufficient band thickness, leading to potential hose damage and material inefficiency, as they lack sufficient intrinsic rigidity.
Innovation Solution
The ring's axial circumferential edges are bent outwards by 70° to 90° through flanging or similar processes, increasing its rigidity and preventing buckling, allowing for thinner band usage without compromising strength or dimensional stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of substance
If the band thickness is reduced to save material and cost, then material usage decreases, but the ring buckles during shrinking due to insufficient rigidity
Solution Approach 1:
The band edges are rounded and bent outwards by 70° to 90°, creating a curved flanged structure that increases intrinsic rigidity. This curvature transforms the flat band into a three-dimensional form with enhanced stiffness, allowing thinner bands to resist buckling during the shrinking process while maintaining material efficiency.
2Strength
If the band thickness is increased to prevent buckling, then ring strength improves, but material usage and cost increase
Solution Approach 1:
Instead of increasing band thickness, the invention creates strength through curvature by flanging the band edges outward. This geometric transformation provides the necessary rigidity and strength to prevent buckling during shrinking, achieving the same structural performance with less material.
Solution Approach 2:
The invention transitions from a two-dimensional flat band to a three-dimensional flanged structure by bending the edges outward. This addition of vertical dimension creates inherent rigidity without requiring increased material thickness, solving the strength-thickness trade-off.
3Ease of manufacture
If conventional flat band edges are used, then manufacturing is simpler, but the hose material is damaged during compression
Solution Approach 1:
The band edges are rounded and bent outwards to form a flanged structure. This curvature eliminates sharp edges that could damage the hose, while the rounded profile distributes compression forces more evenly. The flanged design maintains manufacturing feasibility through standard bending processes.
Solution Approach 2:
The invention changes the geometric parameters of the band edges by bending them outward by 70° to 90°. This parameter modification transforms the edge geometry from flat to flanged, preventing hose damage while remaining compatible with conventional manufacturing processes.
Data Source
AI summary
A shrink-fit ring, the two circumferential edges (10) of which are flanged, makes it possible to use thinner band thicknesses without the risk of buckling owing to its greater intrinsic strength. The circumferential edges (10) end in limbs (16) which point radially outwards and enclose an angle of approx. 70° to 90° with an unflanged centre portion (13) of the ring that is located axially further inwards. The flanging results in an extension of the diameter of the ring edges, wherein the ring edge regions (14) are bent outwards in a rounded manner and the edge surfaces (11) run at an angle of preferably approx. 0° to approx. 20° with respect to the ring axis (12).