Work Vehicle Cab Utility Base Toe Clearance Design
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Solution Overview
Problem
The existing design of utility bases in work vehicle cabs, when elongated for enhanced usability, exposes the front end and interferes with the operator's toe movement during getting on or off, degrading the operator's performance.
Innovation Solution
A utility base design with a cut-out portion in the front corner and a stepped portion along the cut-out, positioned rearwards of specific lines to avoid toe interference, combined with an accommodation recess and a higher base main body height to accommodate objects without toe contact, enhances operator getting-on/off performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of moving object
If the utility base is elongated in the back-and-forth direction for enhanced usability, then the placement space is improved, but the front end portion exposes through the entrance and interferes with operator's toe movement during getting on or off
Solution Approach 1:
The front side corner of the utility base is cut out to remove the interfering portion that blocks toe movement during getting on or off. This extraction of the problematic corner region allows the utility base to maintain its elongated placement space while eliminating the obstacle in the operator's toe movement path.
Solution Approach 2:
The utility base is segmented into different functional zones: the main body provides placement space, while the cut-out front corner creates a clearance zone for toe movement. The stepped portion further segments the structure to accommodate both the lunch box and provide toe clearance simultaneously.
2Adaptability or versatility
If the utility base is elongated to increase placement space, then usability is improved, but operator's getting-on/off performance is degraded due to toe interference
Solution Approach 1:
The interfering front corner is extracted from the utility base structure, allowing the main body to remain elongated for enhanced usability while removing the specific portion that causes toe interference during operator entry and exit.
Solution Approach 2:
The utility base has different structural qualities in different regions: the main body maintains full height and length for placement space, while the front corner has a cut-out with stepped portion to provide local clearance for toe movement, creating localized quality variation to satisfy both requirements.
Data Source
AI summary
A cab includes a side panel, an operator seat, a rear panel and a utility base. The utility base includes: a base main body having a placement surface; and a front wall formed along a front side of the placement surface. The base main body has a cut-out portion formed in a front side corner thereof adjacent to an entrance in a plan view of the placement surface. The front wall has a stepped portion formed along the cut-out portion in a side view of the base main body.