Switch Control Shaft Locking via Intermediary Tightening Piece
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Solution Overview
Problem
The existing method of securing a switch control shaft to a switch pipe shaft using a screw is challenging due to difficulty in accessing the screw for tightening, especially in fully-equipped cabinets where the adjustment and locking of the control shaft with respect to the pipe shaft are performed.
Innovation Solution
A tightening piece is introduced that allows the screw to be easily removed from the side of the pipe shaft and mounted in a position where it can be tightened, acting on the control shaft to press it against the pipe shaft, ensuring secure locking between the tightening piece and the pipe shaft's inner surface.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the screw is mounted on the side of the pipe shaft for securing the control shaft, then the locking mechanism is simple and effective, but the screw becomes difficult to access for tightening in fully-equipped cabinets
Solution Approach 1:
A tightening piece is introduced as an intermediary component between the screw and the control shaft. The tightening piece has a first end that contacts the control shaft and a second end that receives the screw. This mediator allows the screw to be mounted in an accessible location while still effectively securing the control shaft to the pipe shaft, resolving the contradiction between locking reliability and screw accessibility.
2Stability of the object's composition
If the control shaft is secured to the pipe shaft using a through threaded hole with a locking screw, then the control shaft is firmly locked, but the adjustment and locking process becomes difficult to perform in installed cabinets
Solution Approach 1:
The tightening piece serves as a mediator that separates the locking function from the adjustment function. The control shaft can be adjusted and positioned against the tightening piece, and then the screw secures the tightening piece in place. This intermediary approach maintains stable positioning while significantly improving installation ease by allowing the screw to be accessed from convenient locations.
Solution Approach 2:
The locking mechanism is segmented into distinct functional components: the tightening piece that contacts the control shaft and the screw that secures the tightening piece. This segmentation allows each component to perform its specific function optimally - the tightening piece provides stable positioning while the screw provides secure fastening from an accessible location, thereby improving overall installation ease.
Data Source
AI summary
The invention relates to an arrangement for attaching a switch control shaft to a switch pipe shaft, where the control shaft is mounted partly in the switch pipe shaft and tightened to the switch pipe shaft by a screw. The arrangement comprises a tightening piece. The screw is arranged to act on the control shaft through the tightening piece so that when the screw is turned, the tightening piece is arranged to press the control shaft against the pipe shaft so that the control shaft tightens fast between the tightening piece and the pipe shaft.