Clamp Band Retention Geometry for Rubber Profile Edge Protection
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Solution Overview
Problem
Existing clamps heavily load the rubber profile due to engagement with the edges of the clamp band, leading to inefficient assembly and potential damage during the clamping process.
Innovation Solution
A clamp design featuring retention geometries on the radial inner face of the clamp band and the radial outer face of the rubber profile, allowing for a positive-locking connection that reduces loading on the rubber profile, simplifies assembly, and ensures secure fixation without relying on precise fitting of the rubber profile to the clamp band edges.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the rubber profile is fixed by lips which engage around the edges of the clamp band, then the rubber profile is secured to the clamp band, but the rubber profile is heavily loaded by the rims or edges of the clamp band when the pipe or hose is clamped
Solution Approach 1:
The patent introduces retention geometries (protrusions and recesses) as an intermediary fixing mechanism between the clamp band and rubber profile. These retention geometries engage with each other radially to provide positive locking, while the lips are redesigned to engage only with the sides of the clamp band, not the edges. This intermediary mechanism transfers the fixing load from the rubber profile lips to the retention geometries, eliminating the harmful loading of the rubber profile by clamp band edges.
2Reliability
If the lips of the rubber profile engage around the edges of the clamp band, then the rubber profile is fixed to the clamp band, but additional assembly steps or precise fitting is required
Solution Approach 1:
The retention geometries are designed to automatically engage with each other during assembly without requiring additional steps. The protrusion on the clamp band and the corresponding recess in the rubber profile self-align and lock together radially when the clamp band is positioned, providing automatic positive locking. This self-service mechanism eliminates the need for precise manual fitting or additional assembly operations.
3Reliability
If the rubber profile is fixed by lips engaging around the clamp band edges, then the rubber profile is secured, but the edges of the clamp band heavily load the rubber profile during clamping
Solution Approach 1:
The retention geometries serve as an intermediary fixing system that transfers the securing function from the lips to a dedicated engagement mechanism. The lips are redesigned to engage only with the sides of the clamp band, while the retention geometries (protrusion-recess pairs) provide the primary fixing connection. This separation of functions protects the rubber profile from the harmful concentrated loads that would otherwise be applied by the clamp band edges during clamping operations.
Data Source
AI summary
A clamp for fastening an object in the form of a tube or hose, having an elongate clamp strap at each of the ends of which there is provided a radially outwardly projecting fastening leg, and having a rubber profile which is provided on the radial inner face of the clamp strap and which at least partially engages around each of the edges of the clamp strap by way of a lip. At least one first holding geometry is provided on the radial inner face of the clamp strap, and at least one second holding geometry is provided on the radial outer face of the rubber profile.