Elastic Latching Member for Vibration-Resistant Rotary Shaft Fixing
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Solution Overview
Problem
Existing methods for fixing rotary shafts using screw nuts often fail to securely maintain the shaft at high speeds due to vibrations that cause loosening.
Innovation Solution
A fixing device comprising a latching member with a hollow conical frustum structure and deformation slots, combined with a fastening member and connecting members, which engages with the rotary shaft's threaded portion to resist vibrations through elastic deformation, ensuring secure assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a screw nut is used to fix the rotary shaft, then the installation is simple and the initial fixing is secure, but the fixing reliability deteriorates under high-speed rotation and vibrations
Solution Approach 1:
The latching member is designed with elastic deformation capability through deformation slots, allowing it to dynamically adapt to vibrations during high-speed rotation. The elastic structure enables the latching member to maintain secure engagement by deforming with vibrations rather than remaining rigid, thus preventing loosening while keeping the design relatively simple.
Solution Approach 2:
The latching member's physical state is changed from rigid to elastic through the incorporation of deformation slots. This parameter change allows the structure to absorb vibrational energy through elastic deformation, transforming the way the fixing device responds to dynamic loads and preventing loosening under high-speed conditions.
2Stability of the object's composition
If a rigid fixing structure is used, then the structural stability is high, but the ability to resist vibrations deteriorates
Solution Approach 1:
The latching member incorporates flexible elements through deformation slots that allow elastic deformation. This flexible design enables the structure to absorb and dissipate vibrational energy while maintaining overall structural stability, preventing the fixing device from loosening under high-speed vibrations.
Solution Approach 2:
The elastic deformation capability of the latching member acts as a cushioning mechanism that anticipates and absorbs vibrational impacts before they can cause loosening. The deformation slots pre-position the structure to flex under vibrational loads, protecting the fixing connection from the harmful effects of high-speed vibrations.
3Object-affected harmful factors
If the latching member is made elastic with deformation slots, then the vibration resistance is improved, but the manufacturing complexity increases
Solution Approach 1:
The latching member is segmented by introducing deformation slots that divide the structure into regions capable of independent elastic deformation. This segmentation allows the complex vibration-resistant behavior to be achieved through localized flexible regions rather than requiring the entire structure to be complex, balancing vibration resistance with manufacturability.
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 device effectively prevents loosening by generating an elastic resisting force that maintains the latching member securely on the rotary shaft even during high-speed rotation and vibrations.
Implementation Method 1
The latching portion 11 is capable of deforming elastically along a radial direction thereof
Data Source
AI summary
A fixing device used for fixing a pivot shaft includes a latching member and a fastening member. The latching member has a hollow conical latching portion. The fastening member defines a conical hole corresponding to the conical latching portion of the latching member. The latching member is capable of deforming elastically along a radial direction, and the fastening member is tightly sleeved on the latching portion of the latching member.