Sealed Step Mounting Linkage for Dust and Noise Control
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Solution Overview
Problem
In mechanical step mechanisms, sediment and dust accumulation between the shaft and shaft sleeve leads to noise generation and affects the step-on effect over time.
Innovation Solution
A step mounting mechanism with a sealing shaft sleeve and sealing rings integrated into the design to prevent dust and impurities from entering the shaft holes, combined with a four-link structure driven by a motorized component for noise reduction and improved operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the step mechanism operates for a period of time without sealing, then the structure remains simple and easy to manufacture, but sediment and dust accumulate between the shaft and shaft sleeve causing noise and affecting operation
Solution Approach 1:
The sealing shaft sleeve is fitted over the drive shaft, creating a nested structure where the sealing component is integrated within the existing shaft assembly. This nesting approach adds sealing functionality without requiring separate housing structures, thus improving reliability while minimizing structural complexity
Solution Approach 2:
The sealing shaft sleeve acts as an intermediary component between the drive shaft and the external environment. It mediates by preventing dust and sediment from entering the shaft-hole interface, thereby protecting the mechanical connection while maintaining the overall structural simplicity
2Object-affected harmful factors
If sealing components are added to prevent dust accumulation, then noise and dust accumulation are reduced, but the device complexity increases
Solution Approach 1:
The sealing shaft sleeve is fitted over the drive shaft, creating a nested structure where the sealing component is integrated within the existing shaft assembly. This nesting approach adds sealing functionality without requiring separate housing structures, thus improving reliability while minimizing structural complexity
Solution Approach 2:
The sealing shaft sleeve functions as a flexible protective shell that covers the drive shaft. This thin-walled protective structure effectively blocks dust and sediment from entering the shaft-hole interface while adding minimal structural complexity compared to rigid sealing mechanisms
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 mechanism effectively prevents dust accumulation, reduces noise, and enhances the step-on effect by ensuring smooth operation and reduced wear over long-term use.
Implementation Method 1
a first sealing shaft sleeve being fitted over the drive shaft, at least a part of the first sealing shaft sleeve being located in the first shaft hole
Data Source
AI summary
A step mounting mechanism includes a mounting seat, a drive component, a first connecting rod, a second connecting rod and a step mounting member. The mounting seat is provided with first and second shaft holes. The drive component is connected to a drive shaft. Two ends of the first connecting rod are provided with third and fourth shaft holes. A first sealing shaft sleeve is fitted over the drive shaft, and is at least partially located in the first shaft hole. Two ends of the second connecting rod are provided with fifth and sixth shaft holes, and the second and fifth shaft holes are hinged through a first hinge shaft. The step mounting member is provided with seventh and eighth shaft holes, the fourth and seventh shaft holes are hinged through a second hinge shaft, and the sixth and eighth shaft holes are hinged through a third hinge shaft.