Wheel Device for Carrier Using Clipping Fastener
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Solution Overview
Problem
Existing stroller wheel devices are costly to manufacture and prone to damage, affecting safety and operation, with limited improvements in design despite advancements in other stroller components.
Innovation Solution
A wheel device comprising a shaft, clipping fastener with radially curved claws, and a cover, made of flexible high-strength materials like stainless steel, which securely fixes the wheel around the shaft using a snap-fit mechanism, reducing manufacturing costs and enhancing safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional wheel fixation methods are used to ensure wheel security, then wheel separation is prevented, but manufacturing cost increases
Solution Approach 1:
The fixation system is divided into multiple radial claws that independently engage with the wheel hub, allowing each claw to provide fixation force while using simple, low-cost materials. This segmentation enables reliable wheel security through distributed engagement points without requiring expensive monolithic components.
Solution Approach 2:
The fixation component uses a flexible strip structure that can elastically deform during installation and operation. This flexibility allows the strip to conform to the wheel hub geometry and maintain continuous contact, providing reliable fixation while using thin, low-cost material instead of bulky expensive components.
2Ease of operation
If complex fixation structures are used to ensure smooth rolling, then wheel operation is improved, but device complexity increases
Solution Approach 1:
The invention extracts the essential fixation function from complex mechanical assemblies and implements it through a simple flexible strip with radial claws. By removing unnecessary structural elements and focusing only on the critical engagement mechanism, the design achieves smooth wheel operation without adding device complexity.
Solution Approach 2:
Instead of using rigid mechanical constraints to ensure smooth rolling, the invention uses a flexible strip that adapts to the wheel's motion. The flexibility of the strip allows it to accommodate natural wheel movements and vibrations, maintaining smooth operation without requiring complex guidance or constraint 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 solution provides a cost-effective, durable, and safe wheel fixation system that prevents wheel separation and ensures smooth rolling, addressing the limitations of prior art by using a simple and robust design with flexible stainless steel components.
Implementation Method 1
The clipping fastener is made of flexible material with high strength... the claws are engaged into the channel to pivotally secure the wheel around the shaft
Implementation Method 2
The cover has a connecting structure at an inner surface thereof for engaging with the clipping fastener... the connecting structure is a snap-fit
Data Source
AI summary
A wheel device for a carrier comprises a wheel, a shaft, a clipping fastener and a cover. The shaft passes through the wheel and has a channel at one end. The clipping fastener has a plurality of radially curved claws inwardly extending from an outer portion thereof and the claws are engaged into the channel to pivotally secure the wheel around the shaft. The cover has a connecting structure such as a snap-fit at an inner surface thereof for engaging with the clipping fastener.