Caster Swivel Locking Cam for Controlled Wheel Rotation
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Solution Overview
Problem
Existing caster assemblies lack a reliable mechanism to precisely limit the rotational movement of caster wheels, which can lead to unintended movement and instability in mobile equipment.
Innovation Solution
A caster assembly with a novel cam and locking mechanism, featuring holes or cutouts and a sliding member that engages and disengages to limit the rotation range of the cam, allowing for adjustable axial rotation from 0 to 270 degrees, utilizing a ball detent mechanism for secure axial movement inhibition.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a traditional swivel mechanism is used, then the caster wheel can rotate freely, but the equipment becomes unstable and may move unintentionally
Solution Approach 1:
The cam mechanism dynamically transitions between locked and unlocked states. The cam rotates with the swivel assembly and engages with the sliding member to limit rotation to a specific range (e.g., 45 degrees or 90 degrees), providing controlled dynamics rather than completely free or fixed rotation.
Solution Approach 2:
The invention changes the rotation parameter by introducing a limited rotation range through the cam's geometric design. The cam's profile and the sliding member's engagement define specific angular positions (e.g., 0-45 degrees, 0-90 degrees), transforming the continuous rotation parameter into a controlled discrete range.
2Stability of the object's composition
If a locking mechanism is added to limit rotation, then stability improves, but the device complexity increases
Solution Approach 1:
The locking function is merged into the cam mechanism itself. The cam's rotation and engagement with the sliding member simultaneously achieve both the rotation limiting function and the locking function, eliminating the need for separate locking components.
Solution Approach 2:
The cam mechanism serves multiple functions: it guides the rotation movement, limits the rotation range, provides the locking action through engagement with the sliding member, and enables easy unlocking by reversing the action. This multi-functionality reduces overall system complexity.
3Manufacturing precision
If the sliding member engages with holes or cutouts in the cam, then rotation range is precisely limited, but manufacturing precision requirements increase
Solution Approach 1:
The cam is designed with distinct holes or cutouts that segment the rotation path into specific allowed positions. These segmented features engage with the sliding member to define precise angular limits, making the precision requirements localized to specific geometric features rather than the entire component.
Data Source
AI summary
Embodiments of the invention are directed to caster assemblies for providing mobility and facilitating movement of objects. The caster assemblies include a swivel assembly secured to a wheel assembly, the swivel assembly allowing the wheel of the caster assembly to rotate in clockwise and counterclockwise directions. A locking mechanism, having a sliding member, in the swivel assembly engages with one or more holes in a novel cam for limiting a rotation range of the cam, the sliding member configured to engage and disengage the one or more holes in the cam.