Wheel Connecting Device Shaft Stabilization
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional wheel connecting devices experience noise and instability due to unintentional shaking and collisions between the shaft and mounting seat, especially under weight and lateral forces, leading to reduced service life.
Innovation Solution
The wheel connecting device incorporates a sleeve member and a retaining member that stabilize the shaft within the mounting seat, creating a gap between the enlarged portions and the surrounding wall to allow smooth rotation, reducing collisions and noise, and enhancing structural strength with bump structures and increased contact surfaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the shaft is inserted into the mounting seat with a gap for rotation, then the shaft can rotate smoothly, but the shaft shakes unintentionally and collides with the surrounding wall causing noise
Solution Approach 1:
The sleeve member is introduced as an intermediary component between the shaft and the mounting seat. It is sleeved on the connecting portion of the shaft and contacts both the shaft and the inner surrounding surface, filling the gap and preventing direct collision while allowing rotation through the sleeve.
Solution Approach 2:
The retaining member extends helically around the neck portion in a third dimension, creating a surrounding groove that confines the shaft's radial movement while permitting rotational motion. This helical configuration adds dimensional control to prevent shaking in multiple directions.
2Object-affected harmful factors
If the shaft is tightly fitted in the mounting seat to prevent shaking, then noise is reduced, but the shaft cannot rotate smoothly and collision occurs under lateral forces
Solution Approach 1:
The sleeve member acts as a mediator that provides continuous contact support between the shaft and mounting seat, eliminating gaps that cause noise while maintaining rotational freedom through the sleeve's clearance fit.
Solution Approach 2:
The design changes the clearance parameter dynamically - the gap between enlarged portions and surrounding wall is controlled to be small enough to prevent noise but large enough to allow smooth rotation, optimized through the sleeve member's dimensions.
3Strength
If the mounting seat withstands weight and lateral forces directly, then structural strength is maintained, but the mounting seat collides with the shaft under lateral forces causing noise
Solution Approach 1:
The sleeve member serves as a protective intermediary that absorbs and distributes lateral forces between the shaft and mounting seat, preventing direct collision while maintaining the load-bearing capacity of the mounting seat.
Solution Approach 2:
The sleeve member and retaining member structure provides beforehand cushioning by creating a compliant interface that absorbs impact forces before they can cause collision noise, particularly under lateral loading conditions.
Data Source
AI summary
A wheel connecting device includes a mounting seat, a shaft, a sleeve member and a retaining member. The mounting seat defines an accommodating space and includes a surrounding wall that has an inner surrounding surface surrounding the accommodating space. The shaft has a first mounting segment that is inserted into the accommodating space, and a second mounting segment that is disposed under and connected to the first mounting segment. The sleeve member is sleeved on the connecting portion of the first mounting segment of the shaft. The retaining member extends helically around a neck portion of the first mounting segment of the shaft, and is in contact with the neck portion and the surrounding wall.