Non-motorized Vehicle Wheel Tread Axial Replacement
Solution Overview
Problem
The existing methods for replacing wheel treads in non-motorized vehicles often require disassembling the wheel, which can be costly and inconvenient, especially when the wheel contains expensive electronic components, and may compromise the integrity of sealed compartments.
Innovation Solution
A wheel assembly design that allows for the axial removal and installation of tread assemblies without disassembling the wheel, using fastening devices and locking features arranged around the circumference to secure the tread to the housing assembly, enabling replacement without opening sealed compartments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the entire wheel is replaced when the tread is worn, then the wheel restores full functionality, but the cost increases substantially and electronic components are unnecessarily discarded
Solution Approach 1:
The wheel is divided into two main segments: a reusable housing assembly containing electronic components and a replaceable tread assembly. This segmentation allows the tread to be replaced independently without affecting the housing or its electronic components, thereby resolving the contradiction between restoring wheel functionality and preserving valuable electronic components.
Solution Approach 2:
The tread assembly is extracted as a separate, removable component from the wheel system. This extraction enables the tread to be replaced without removing or damaging the electronic components housed in the housing, allowing selective replacement of only the worn portion while retaining valuable components.
2Ease of repair
If the wheel is disassembled to replace the tread, then the tread can be accessed, but the sealed compartment containing electronic components must be opened, compromising its integrity
Solution Approach 1:
The wheel design segments the tread assembly from the sealed housing compartment. The tread assembly can be removed and replaced through the open wheel well without requiring access to or opening of the sealed compartment, thus maintaining seal integrity while enabling easy tread replacement.
Solution Approach 2:
The tread assembly is extracted as a separately accessible component that can be removed without opening the sealed housing. This extraction strategy allows tread replacement while keeping the sealed compartment intact, preserving both ease of repair and seal reliability.
3Strength
If the tread is made permanently attached to the wheel, then structural integrity is maximized, but replacement becomes difficult and costly
Solution Approach 1:
The wheel system is segmented into a housing assembly and a tread assembly connected through a standardized interface. This segmentation allows the tread to be strongly attached during use while enabling straightforward replacement by disconnecting the interface, balancing structural integrity with ease of repair.
Solution Approach 2:
The attachment between the tread assembly and housing assembly is designed to be dynamically changeable - strongly connected during operation for structural integrity, but easily disconnectable for replacement. The interface allows transition between these two states, enabling both strong attachment and easy repair.
4Reliability
If the wheel housing is designed to be sealed to protect electronic components, then component protection is improved, but access for maintenance becomes difficult
Solution Approach 1:
The wheel housing is segmented into a sealed compartment for electronic components and an unsealed wheel well for the tread assembly. This segmentation allows the sealed portion to protect components while the unsealed portion provides easy access for tread maintenance, resolving the contradiction between protection and accessibility.
Data Source
AI summary
A wheel for a non-motorized vehicle (e.g., a shopping cart) can include a housing assembly and a tread assembly. The housing assembly can be configured to sealingly house electronics or other components. The tread assembly can removably mate with the housing assembly such that the electronics or other components remain closed and/or sealed within the housing assembly when the tread assembly is mated or unmated with the housing assembly.