Cab Electric Component Gap Placement for Dust and Space
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Solution Overview
Problem
In crawler dozers, electric components such as fuse boxes arranged outside the cab are prone to dust ingress, and when moved inside, they can obstruct the operator's movement within the cab.
Innovation Solution
The electric components are strategically placed in the gap between the front and rear walls of the cab, projecting into the indoor space through a hole in the front wall, with a reduced size to avoid obstructing the operator's path and utilizing a cover and reinforcement plate to maintain structural integrity and reduce dust entry.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the electric component is arranged outside the cab, then the operator can move freely in the cab, but dust easily enters the electric component
Solution Approach 1:
The electric component is nested within the cab structure by placing it in the gap between the front wall and rear wall, with only a portion projecting through the front wall. This nesting arrangement protects the electric component from dust while maintaining compact space utilization within the cab.
2Object-affected harmful factors
If the electric component is arranged in the cab, then dust entry is suppressed, but the operator's movement is prevented
Solution Approach 1:
The electric component is positioned in the depth dimension of the cab (in the gap between front and rear walls) rather than occupying lateral space that would interfere with operator movement. This dimensional arrangement allows the component to be inside the cab for dust protection while minimizing intrusion into the operator's working space.
3Ease of repair
If the electric component projects into the indoor space, then it can be accessed, but it obstructs the operator's movement
Solution Approach 1:
Only a necessary portion of the electric component projects through the front wall to maintain accessibility for operations and maintenance, while the majority of the component remains retracted within the protected gap space. This localized projection minimizes obstruction to operator movement while preserving essential access capabilities.
Data Source
AI summary
A rear portion is arranged in the rear of a front portion, and has a width smaller than a width of the front portion in a plan view. A wall portion extends from the rear portion outward in a width direction toward the front portion and includes two walls opposed to each other in a fore/aft direction with a gap lying therebetween, in a plan view. Electric components are arranged in the gap and project into an indoor space of a cab from the gap through a through hole formed in the front wall. In a plan view, a foremost portion of the electric components is located in the rear of a foremost normal located foremost among normals to a line connecting a front end and a rear end of a doorway, which intersect with the front wall.