Clamping Ring Assembly for Secure Adapter Shaft Contraction
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Solution Overview
Problem
Existing non-positive connections between shafts and adapter shafts lack security and ease of implementation, particularly in applications requiring mechanical contraction for secure attachment.
Innovation Solution
A clamping ring with a radially continuous threaded bore and insert rings is used, where the insert rings have radially inwardly projecting nose portions that engage with axial and transverse slots on the adapter shaft, allowing for mechanical contraction and secure attachment without additional special means, and can be easily produced using plastic injection molding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a clamping ring is used to connect an adapter shaft to a shaft, then the connection security is improved, but the device complexity increases due to additional components
Solution Approach 1:
The patent combines multiple functions into the clamping ring: the ring itself provides clamping force, while integrated axial slots and transverse slots create the shrinking mechanism. The insert ring with nose portions engages with these slots to form a captive device, eliminating the need for separate securing components and reducing overall device complexity while maintaining connection security.
Solution Approach 2:
The insert ring is nested within the clamping ring, with the nose portions of the insert ring engaging into the slots of the adapter shaft through the clamping ring structure. This nested arrangement creates a compact captive device that secures the adapter shaft without requiring additional external components, thus improving reliability while managing complexity.
2Ease of operation
If axial slots are made in the adapter shaft to enable elastic deflection, then the ease of operation is improved, but the manufacturing precision requirements increase
Solution Approach 1:
The adapter shaft is segmented by introducing axial slots that divide the shaft wall into sections. These slots allow the shaft to deflect elastically when the clamping ring is tightened, enabling easier operation and assembly. The segmentation creates controlled weak points that facilitate the required deformation without compromising overall structural integrity, balancing ease of operation with manufacturing feasibility.
3Reliability
If a captive device is formed using insert rings with nose portions, then the reliability of the connection is improved, but the manufacturing complexity increases
Solution Approach 1:
The patent merges the securing function into the insert ring design, where the nose portions of the insert ring engage with the axial slots of the adapter shaft. This integration creates a captive device that prevents the insert ring from becoming loose, improving reliability. The design is manufactured as a single plastic injection molded part, which actually simplifies production by eliminating the need for separate securing components and assembly steps.
4Stability of the object's composition
If multiple axial slots are regularly spaced apart, then the elasticity of the adapter shaft is improved, but the manufacturing precision requirements increase
Solution Approach 1:
Multiple axial slots are regularly spaced around the adapter shaft circumference, creating uniform segments that allow controlled elastic deflection. This segmentation distributes the deformation evenly, enhancing the overall elasticity and performance of the adapter shaft. The regular spacing provides predictable mechanical behavior while remaining manufacturable through standard machining or molding processes.
Solution Approach 2:
The axial slots are positioned at specific locations around the adapter shaft where local elastic deflection is most beneficial. By concentrating the slots at strategic positions rather than uniformly distributing them, the design optimizes elasticity where needed while reducing manufacturing complexity in other areas, balancing performance requirements with manufacturing capabilities.
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 solution provides a secure, captive non-positive connection that is easy to implement and requires minimal additional components, enhancing the security and elasticity of the adapter shaft's attachment to a hollow shaft area, allowing for simple and quick connection and deformation without wave formation.
Implementation Method 1
a threaded pin (2), in particular a screw, which is screwed into the threaded bore (40) and presses on the adapter shaft (1)
Implementation Method 2
the adapter shaft (1) can be deflected elastically and thus pressed against the hollow shaft as soon as the threaded pin presses on the adapter shaft
Data Source
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AI summary
The invention relates to an assembly for connecting an adapter shaft (1) to a shaft in a force-fitting manner using a clamping ring (4), wherein • the clamping ring is plugged onto the adapter shaft, • the shaft is inserted into the adapter shaft, • the clamping ring has a radially continuous threaded bore into which a screw part, in particular a threaded pin (2), is screwed, said screw part being pressed onto the adapter shaft, • at least one insert ring (3) is inserted into and/or is at least partly received in an annular groove introduced into the clamping ring, in particular into an annular groove introduced into the inner wall of the clamping ring, i.e. into the hollow side in particular, and • the insert ring or each insert ring has a nose region which protrude radially inwards and which at least partly protrudes into a slot of the adapter shaft.