Removable Caster Wheel Assembly With Tool-Free Lock Release
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Solution Overview
Problem
Conventional caster assemblies face issues with wear, damage, complex disassembly, loosening, jamming, and lack of protective structures, necessitating specialized tools and compromising aesthetic and functional integrity.
Innovation Solution
A wheel assembly with a simplified structure featuring a detachment mechanism for tool-free disassembly and a housing to protect the rotating wheel, incorporating a mounting base, caster assembly, and a detachment mechanism with a sliding member and elastic member for secure locking and easy disassembly, along with a protective cover and ball bearing for debris prevention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If fixed installation structures are used, then the caster assembly is secure and stable, but disassembly requires specialized tools which is time-consuming and labor-intensive
Solution Approach 1:
The caster assembly is divided into separable components (wheel assembly, housing, mounting base) that can be independently removed. The detachment mechanism segments the connection system into a locking component and a releasing component, allowing tool-free disassembly by simply pressing the releasing component to disengage the lock.
Solution Approach 2:
The detachment mechanism acts as an intermediary between the mounting base and caster assembly. It provides a controlled interface that enables secure attachment during operation while allowing easy detachment when needed, mediating between the need for stability and the need for ease of disassembly.
2Ease of operation
If detachable caster assemblies with complex structures are used, then disassembly is easier, but the structures are prone to loosening, jamming, or failure after prolonged use
Solution Approach 1:
The detachment mechanism is designed to be self-operating through the elastic member. The elastic member automatically maintains the locking component in the locked position during operation, and can be easily actuated by user pressure to release the lock. This self-servicing mechanism eliminates the need for external tools while ensuring reliable locking during use.
Solution Approach 2:
The elastic member provides beforehand cushioning by continuously applying locking force to the locking component. This pre-applied elastic force ensures the connection remains secure during operation and automatically compensates for any wear or dimensional variations, preventing loosening and failure before they occur.
3Device complexity
If exposed wheel structures are used, then the structure is simple, but dust and debris can infiltrate internal components impairing steering flexibility and service life
Solution Approach 1:
The housing acts as a flexible shell that encloses and protects the wheel assembly and its internal components. The housing completely surrounds the wheel, creating a sealed environment that prevents dust and debris from infiltrating while still allowing the wheel to rotate freely. This protective shell maintains structural simplicity while effectively blocking harmful factors.
4Object-affected harmful factors
If protective structures are added to protect the rotating wheel, then debris infiltration is prevented, but the structure becomes more complex
Solution Approach 1:
The housing merges multiple functions into a single integrated structure: it protects the wheel assembly from debris, provides mounting attachment points, and serves as the outer casing. By combining protection, mounting, and structural support into one component, the design achieves effective debris prevention without proportionally increasing overall structural complexity.
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
Enables rapid, tool-free disassembly and assembly, enhances aesthetic appeal, and protects the wheel from debris, improving service life and steering flexibility.
Implementation Method 1
an elastic member connected to the sliding member; the elastic member is configured to maintain the sliding member in a locking position
Implementation Method 2
a protective cover and ball bearing; the ball bearing includes an outer ring, an inner ring, a plurality of rolling balls and a retaining ring
Data Source
AI summary
A removable wheel assembly includes a mounting base, a caster assembly and a detachment mechanism. The mounting base is provided with an insertion hole and a transverse guide groove communicated with the insertion hole. The caster assembly includes an insertion shaft, a wheel bracket, a rotating wheel and a housing. The insertion shaft includes a first end portion, and the first end portion is provided with a first engagement portion. The wheel bracket is connected to the insertion shaft. The rotating wheel is mounted on the wheel bracket. The housing includes a first housing and a second housing engaged with each other, and both the first housing and the second housing cover an outer side of the rotating wheel. The detachment mechanism includes a sliding member slidably disposed within the transverse guide groove and an elastic member connected to the sliding member.