Cab Door Display Layout for Loader Work Area Visibility

Resolve Bottlenecks,
Find Innovative Solutions
Generate Solutions

Solution Overview

Problem

Power machines, particularly compact loaders, face challenges in maintaining situational awareness and operational efficiency during repetitive tasks due to the placement of display panels in corners of the cab, which obstruct the operator's view of the work area.

Innovation Solution

Integration of a display into the cab door that allows for augmented control and enhanced visibility of operational information, enabling the operator to maintain focus on the work area while receiving critical information through a display integrated into the cab door.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Loss of information

If display panels are mounted in corners of the cab to provide operational information, then the operator receives necessary operational data, but the operator's view of the work area is obstructed and situational awareness is reduced

Engineering Contradiction:
Improveoperational informationVSAvoidobstruction of work area view
Core Design Contradiction:
Loss of informationVSObject-affected harmful factors

Solution Approach 1:

The display is relocated from the corner of the cab to the cab door, changing the spatial dimension and position of the display. This allows the display to be positioned in the operator's peripheral vision or line of sight without blocking the central view of the work area, thus providing operational information while maintaining situational awareness.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

2Object-affected harmful factors

If the operator focuses on the work area to maintain situational awareness, then the operator can see the work area clearly, but operational information displayed in corners is difficult to observe

Engineering Contradiction:
Improvevisibility of work areaVSAvoidoperational information visibility
Core Design Contradiction:
Object-affected harmful factorsVSLoss of information

Solution Approach 1:

By moving the display to the cab door, the information is presented in a different spatial location that does not compete with the central work area view. The operator can glance at the door display while maintaining focus on the work area, reducing the need to shift attention between separate locations.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

3Loss of information

If display panels are positioned to be visible to the operator, then operational information is provided, but the display structures add complexity to the cab door or panel assembly

Engineering Contradiction:
Improveoperational informationVSAvoiddisplay integration complexity
Core Design Contradiction:
Loss of informationVSDevice complexity

Solution Approach 1:

The display is integrated directly into the cab door assembly, merging the display function with the existing door structure. This eliminates the need for separate mounting structures and reduces overall system complexity by combining multiple functions into a single integrated component.

Inventive Principle:
Principle #5Merging (Combining)

Data Source

PatentEP4058635B1Display integrated into door
Publication Date: 2026.03.04 DOOSAN BOBCAT NORTH AMERICA INC
  • EP4058635B1 patent drawingFigure 1
  • EP4058635B1 patent drawingFigure 2
  • EP4058635B1 patent drawingFigure 3

AI summary

Power machines and loaders having doors (1410; 1510; 1710; 1810; 1910) with an integrated display (1530; 1730; 1830; 1930) that allows the display of information, such as gauges, user inputs, mapped obstacles, boundaries, etc., that allows the operator of the machine to see the displayed information closer to the line of sight with the work area. The display can show augmented reality information about a worksite.