Multifunctional Cab Support Integrating Door Hinge and Mirror Bar
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Solution Overview
Problem
Existing work machines, such as wheel loaders, require separate arrangements for the cabin door, mirror rod, and handrail, leading to material and assembly inefficiencies.
Innovation Solution
A multifunctional holding part is integrated into the driver's cab, incorporating first and second hinge arrangements to pivot the cabin door and pivot the mirror rod/handrail, respectively, eliminating the need for separate components and reducing material usage and assembly costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If separate arrangements are used for the cabin door, mirror rod, and handrail, then each component can be independently designed and assembled, but material usage increases and assembly costs rise
Solution Approach 1:
The patent combines the mirror rod and handrail into a single integrated component that serves both functions simultaneously. This merging eliminates the need for separate mirror rod and handrail components, reducing material usage and assembly complexity while maintaining independent design capabilities for the integrated unit
Solution Approach 2:
The integrated component performs multiple functions: it serves as both a mirror rod (for rear-view mirrors) and a handrail (for driver access). This multi-functional design allows a single component to replace what would traditionally require two separate components, thereby reducing material consumption and assembly operations
2Ease of manufacture
If separate arrangements are used for the cabin door, mirror rod, and handrail, then each component can be independently manufactured, but assembly complexity and costs increase
Solution Approach 1:
By merging the mirror rod and handrail into one integrated component, the patent reduces the total number of parts that need to be assembled. This decreases assembly complexity and the number of assembly operations required, while the integrated component itself can still be manufactured using standard fabrication processes
3Loss of substance
If a multifunctional holding part is used to combine mirror rod and handrail, then material and assembly costs are reduced, but the component design becomes more complex
Solution Approach 1:
The holding part is designed as a universal component that simultaneously provides support for the mirror assembly and serves as a handrail structure. This multi-functional design achieves material savings by eliminating redundant components, while the design complexity is managed through a unified structural approach rather than multiple separate components
Data Source
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AI summary
The present invention relates to a work machine with a driver's cab having a cab door which is pivotably arranged about a door hinge, wherein a mirror bar with a mirror and/or a handrail is arranged directly or indirectly on the driver's cab, wherein a multifunctional support element is further arranged on the driver's cab, which has a first hinge arrangement defining a first axis of rotation, wherein the cab door is pivotable by means of the first hinge arrangement, and which has a second hinge arrangement defining a second axis of rotation, wherein the mirror bar is pivotable by means of the second hinge arrangement, and/or wherein the handrail is arranged on the multifunctional support element.