Rotation Shaft Blocking Structure for Controlled Axial Translation
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Solution Overview
Problem
Existing rotation shaft structures face challenges in managing both axial free movement and accidental axial movement, necessitating a solution that allows controlled translation and rotation while preventing unintended axial shifts.
Innovation Solution
A rotation shaft structure with a blocking assembly and cooperative blocking member that switches between postures to control translation, utilizing an elastic member and protrusion mechanism to enable controlled axial movement and prevent unintended translation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the rotation shaft is designed to allow axial free movement, then the rotation shaft can translate between first and second translation positions, but the rotation shaft may experience accidental axial movement
Solution Approach 1:
The blocking assembly is designed to dynamically switch between first and second postures based on the rotation shaft's rotational position. When the rotation shaft rotates to a predetermined position, the blocking assembly automatically transitions from a blocking state (second posture) to a non-blocking state (first posture), allowing axial translation. This dynamic behavior enables controlled axial movement while preventing accidental shifts, resolving the contradiction between ease of operation and reliability.
Solution Approach 2:
The blocking assembly utilizes changes in rotational position as a parameter to control axial movement. By linking the blocking assembly's posture to the rotation shaft's angular position, the system transitions between blocked and unblocked states based on rotational parameters. This parameter-based control allows the rotation shaft to move axially only at specific rotational positions, preventing accidental movement while maintaining operational capability.
2Reliability
If a blocking mechanism is added to prevent accidental axial movement, then axial position stability is improved, but the device complexity increases
Solution Approach 1:
The blocking assembly is integrated with the rotation shaft through pivotal coupling, combining the blocking function with the existing rotational mechanism. The blocking assembly shares the rotation shaft's rotational motion and uses it to control the blocking state, rather than being a completely separate mechanism. This merging reduces overall device complexity while maintaining reliability.
Solution Approach 2:
The blocking assembly serves multiple functions: it prevents accidental axial movement during normal operation, allows controlled axial translation at predetermined rotational positions, and automatically switches states based on rotational position. This multi-functionality reduces the need for additional separate mechanisms, thereby reducing device complexity while improving reliability.
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
Enables controlled axial movement and translation of the rotation shaft, preventing accidental shifts and enhancing operational reliability in switching devices.
Implementation Method 1
an elastic member, wherein the outer shell is sleeved on the rotation shaft, and the elastic member is arranged between an insertion part of the rotation shaft inserted into the outer shell and one side of the protrusion
Data Source
AI summary
The present application relates to a rotation shaft structure, a transmission system, an operation mechanism, and a switching device assembly. The rotation shaft structure includes a rotation shaft, being capable of rotating between a first rotation position and a second rotation position, and further configured to be capable of translating between a first translation position and a second translation position in a direction along a rotation axis of the rotation shaft; a blocking assembly, being capable of switching between a first posture and a second posture; and a cooperative blocking member, when the blocking assembly is in the first posture, the cooperative blocking member is out of a translation path of the rotation shaft from the first translation position to the second translation position, when the blocking assembly is in the second posture, the cooperative blocking member is in the translation path.