Adjustable Caster Guard Band for Foot Injury Prevention
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Solution Overview
Problem
Injuries from casters on material handling carts, particularly due to their protrusions and limited visibility, pose a risk to operators and bystanders, and existing solutions do not adequately address these issues without requiring modifications to the casters.
Innovation Solution
A caster guard with a configurable band that surrounds the caster wheel, featuring adjustable sleeves and clamp pads to secure onto existing caster subassemblies, allowing for 360-degree rotation and attachment without additional hardware, and optionally including a skirt for debris clearance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a caster guard is added to protect against injuries, then safety is improved, but device complexity increases
Solution Approach 1:
The caster guard is divided into multiple components: a band that surrounds the caster, clamp pads for attachment, and adjustable sleeves. This segmentation allows the guard to be attached to conventional casters without modifying the caster itself, thereby improving safety while minimizing the increase in device complexity.
Solution Approach 2:
The caster guard acts as an intermediary protective element between the caster protrusions and the operator's feet. It provides a barrier that prevents direct contact with harmful caster components like foot brakes and swivel locks, thus improving safety without requiring fundamental changes to the caster design.
2Adaptability or versatility
If the caster guard is designed to accommodate various caster sizes, then adaptability is improved, but device complexity increases
Solution Approach 1:
The caster guard incorporates adjustable sleeves and clamp pads that can be positioned at different locations along the band. This dynamic adjustability allows the same guard design to accommodate various caster wheel diameters and mounting plate configurations, improving adaptability without requiring multiple different guard designs.
Solution Approach 2:
The caster guard is designed as a universal protective device that can be attached to different types of conventional casters (rigid and swivel styles) using the same basic attachment mechanism. The band, clamp pads, and sleeves work together to provide a universal solution that adapts to various caster sizes and configurations.
3Reliability
If the caster guard uses additional hardware for attachment, then reliability of attachment is improved, but ease of manufacture worsens
Solution Approach 1:
The caster guard utilizes the existing hardware (bolts and nuts) already present on conventional caster axles for attachment. The clamp pads are designed to engage with these existing fasteners, allowing the guard to be securely attached without requiring additional hardware or modifications to the caster, thereby maintaining ease of manufacture while ensuring reliable attachment.
Data Source
AI summary
The caster guard comprises a band which may surround a variety of conventionally known caster subassemblies, wherein exemplary caster subassemblies include those used on material handling carts. The band protects an individual's foot from injury. In an exemplary embodiment, the caster guard further comprises a top mounting plate attached to a side support that is attached to the band. In application, the top mounting plate is sandwiched between and secured to the caster mounting plate and a frame of the caster subassembly. In another embodiment, the caster guard comprises two opposing adjustable sleeves each disposed within two opposing clamp pads which are secured to the band. The sleeves may be engaged with a head bolt and a jam nut of the wheel axel unit of the caster subassembly.