Clamping Hub Flat-Aperture Structure to Reduce Shaft Damage
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Solution Overview
Problem
Existing clamping hubs can damage shafts when using traditional fasteners, and there is a need for a solution that minimizes this damage while securely attaching to variously shaped shafts.
Innovation Solution
A clamping hub design featuring a non-circular aperture with a substantially flat portion and a shaft securer aperture aligned with the flat wall, using a threaded aperture and clearance aperture mechanism to secure the hub onto the shaft, reducing damage by distributing the force across the flat surface.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If traditional fasteners are used to secure the hub to the shaft, then the hub can be securely attached, but the shaft can be damaged
Solution Approach 1:
The aperture includes a substantially flat portion that provides a localized flat surface for the fastener to bear against, while the rest of the aperture maintains its non-circular shape to fit the shaft. This local flat area distributes the clamping force and prevents damage to the shaft surface.
Solution Approach 2:
The flat portion of the aperture acts as an intermediary between the fastener and the shaft, distributing the point load from the fastener across a larger surface area, thereby preventing direct concentration of force on the shaft that would cause damage.
2Object-affected harmful factors
If a non-circular aperture with flat portion is used, then shaft damage is minimized, but the device complexity increases
Solution Approach 1:
The aperture employs asymmetric geometry with a non-circular shape that includes a substantial flat portion. This asymmetric design allows the aperture to fit specific shaft shapes while providing a flat bearing surface, resolving the contradiction between protecting the shaft and maintaining simple geometry.
Data Source
AI summary
Embodiments of clamping hub are disclosed. In one embodiment, the clamping hub includes a non-circular aperture with a portion of the non-circular aperture being formed so as to be substantially flat. The clamping hub also includes a shaft securer aperture that is formed in a substantially flat wall that contributes to the substantially flat portion of the non-circular aperture.