Stroller Wheel Assembly Resilient Buffering Member
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Solution Overview
Problem
Conventional stroller wheel assemblies generate noise and exhibit wobbly motion due to mounting gaps, which affect their movement and stability.
Innovation Solution
A wheel assembly featuring a resilient buffering member with protruding portions that abut against the bottom base, clamped between the mounting sleeve and bottom base, to absorb impacts and prevent deviation, using an interference fit to maintain stability and reduce noise.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional wheel assembly components are mounted with gaps between them, then the assembly allows for easy manufacturing and assembly, but it generates noise and causes wobbly motion when impacted
Solution Approach 1:
The resilient buffering member acts as an intermediary element between the wheel and the mounting base. It fills the mounting gap and provides a compliant interface that absorbs impact forces, preventing the transmission of vibrations and noises while maintaining the necessary assembly clearance for easy manufacturing.
Solution Approach 2:
The resilient buffering member changes the mechanical parameters of the connection interface by introducing elasticity and damping properties. Instead of a rigid fixed connection, the system uses a compliant connection that can deform elastically under impact, transforming the hard contact into a soft, noise-reducing interface.
2Object-generated harmful factors
If resilient buffering member with protruding portions is clamped between mounting sleeve and bottom base, then noise and wobbling are reduced, but the device complexity increases
Solution Approach 1:
The resilient buffering member combines multiple functions into a single component: it provides noise reduction through elastic damping, maintains proper positioning through its protruding portions that engage with the mounting structure, and absorbs impact forces. This merging of functions reduces the need for separate noise-damping elements, positioners, and impact absorbers.
Solution Approach 2:
The resilient buffering member utilizes flexible elastic material properties to create a compliant structural element. The elastic deformation capability of the material allows it to absorb impacts and reduce noise without requiring complex rigid structures, springs, or dampers, thereby simplifying the overall device complexity while achieving the desired noise reduction.
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 solution effectively minimizes noise and wobbling, ensuring smooth and stable movement of the stroller by filling mounting gaps and absorbing impact through elastic deformation of the resilient buffering member.
Implementation Method 1
absorbing impact through elastic deformation of the resilient buffering member
Data Source
AI summary
A wheel assembly includes a bottom base fixed with an axle, a wheel assembled to a bottom end of the bottom base, and a mounting base fixed with a mounting sleeve. The axle protrudes out of a top end of the bottom base, and is inserted into the mounting sleeve to assemble the bottom base to the mounting base. A resilient buffering member is sleeved on the axle and is clamped between the mounting sleeve and the bottom base. The resilient buffering member has at least one protruding portion that projects downward from a bottom surface thereof and that abuts against the bottom base.