Synchronized Claw Assembly for Axle Puller Safety
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Solution Overview
Problem
Conventional pullers for removing annular elements from axles lack interconnected claws, leading to hazardous accidental disengagement during use, as each claw is engaged or disengaged independently, requiring careful attention from the user.
Innovation Solution
A claw assembly with a collar, pivotally connected claws, and a synchronizer that moves between opening and closing positions to synchronize the pivoting of the claws, ensuring safe and efficient engagement and disengagement of annular elements from axles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If claws are made independent and pivotally connected to collar, then ease of operation is improved, but reliability deteriorates due to accidental disengagement
Solution Approach 1:
The patent connects the claws through a synchronizer mechanism that merges their independent movements. The synchronizer includes a receiving portion that receives protuberances from both claws, forcing them to move together as a synchronized unit rather than independently, thereby preventing accidental disengagement while maintaining operational ease
2Reliability
If synchronizer is added to connect claws, then reliability is improved, but device complexity increases
Solution Approach 1:
The synchronizer is nested within the collar structure, with the receiving portion positioned inside the collar's internal space. The protuberances from the claws extend into the collar and engage with the synchronizer, creating a compact nested arrangement that adds synchronization functionality without significantly increasing overall device complexity or requiring separate external components
Data Source
AI summary
A claw assembly includes a collar, claws and a synchronizer. The collar includes slots. The claws are pivotally connected to the collar. Each of the claws includes a protuberance extending into the collar via one of the slots. The protuberances are movable along the slots. The synchronizer includes a receiving portion for receiving the protuberances. The receiving portion of the synchronizer is movable in the collar between an opening position and a closing position. The synchronizer opens the claws by the protuberances in the opening position. The synchronizer closes the claws by the protuberances in the closing position.