Stackable Control Device Caster Support Stability
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Solution Overview
Problem
Industrial control devices with casters become unstable when stacked due to non-flat shapes and varying heights, which can lead to instability and difficulty in safe stacking.
Innovation Solution
A stackable control device design featuring casters on the bottom surface and support members on the upper surface, where two casters sandwich the support members to stabilize the device, preventing shifting during stacking.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If control devices with casters are stacked, then mobility and space utilization are improved, but stability deteriorates due to non-flat shapes and varying heights
Solution Approach 1:
The control device utilizes its own casters to nest within the support structure of stacked units. Specifically, the casters of the lower unit are positioned within the support member structure of the upper unit, creating a nested configuration that interlocks the stacked devices and prevents lateral movement while maintaining stability.
Solution Approach 2:
The support member acts as an intermediary element between the upper control device and the lower unit. This support member receives the upper device and transfers the load to the lower unit's casters, which then provide stabilization. The support member mediates the interaction between stacked units, enabling stable stacking despite non-flat shapes.
2Productivity
If control devices with varying heights are stacked, then space utilization is improved, but stability deteriorates due to height differences
Solution Approach 1:
The support member is designed with specific local structural qualities that accommodate height variations. The support member includes positioning features and support surfaces that are locally optimized to receive upper devices of varying heights while maintaining consistent stabilization across the stacked configuration.
Solution Approach 2:
The stacking system allows for dynamic height variations while maintaining stability through the flexible support member design. The support member can accommodate different upper device heights through its structural configuration, allowing the system to adapt to varying heights without compromising stability.
3Ease of operation
If control devices are designed with casters for mobility, then ease of movement is improved, but stacking stability deteriorates due to the presence of casters on the bottom surface
Solution Approach 1:
The casters serve multiple functions: they provide mobility for the control device when not stacked, and simultaneously serve as stabilization elements when stacked. The same casters that enable easy movement also act as support points for the support member structure, creating a multi-functional component that addresses both mobility and stacking stability requirements.
Data Source
AI summary
A stackable control device is equipped with a plurality of casters provided on a side of a bottom surface, and a support member provided on an upper surface and configured to support a control device that is stacked on a side of the upper surface. Two from among the plurality of casters sandwich the support member of a control device that is stacked on the side of the bottom surface.