Utility Vehicle Door and Protective Cover Access Mechanism
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Solution Overview
Problem
Existing utility vehicles require burdensome operations to open or close access openings due to net structures being attached to the roll cage, making it difficult for passengers to enter or exit.
Innovation Solution
A utility vehicle design featuring a side member forming access openings with a rotatable door and a protective cover that rotates with the door, eliminating the need for passengers to detach or reattach net structures when entering or exiting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the net structure is attached to the roll cage, then the access opening can be covered when closed, but the passenger has to perform burdensome operations of detaching or reattaching the net structure to open or close the access opening
Solution Approach 1:
The access opening coverage system is divided into two independent segments: a door structure attached to the roll cage and a separate net structure that can be independently mounted or removed. This segmentation allows the door to provide structural coverage while the net can be easily attached or detached without affecting the door mechanism, resolving the contradiction between reliable coverage and ease of operation.
Solution Approach 2:
A mounting structure acts as an intermediary between the door and the net structure. This intermediary component enables the net to be easily attached or detached from the door or roll cage without requiring complex operations, while still maintaining effective coverage of the access opening when closed.
2Reliability
If the net structure is attached to the roll cage, then the access opening remains covered, but the device complexity increases due to the need for detachment and reattachment operations
Solution Approach 1:
The system is segmented into independent functional components: the door structure for structural support and coverage, and the net structure for additional protection. The net is designed as a separate, removable component that can be independently mounted or removed without complicating the overall system architecture, thereby maintaining reliability while minimizing device complexity.
Solution Approach 2:
The net structure is designed as a simple, lightweight, and easily replaceable component. Rather than creating a complex permanent attachment system, the net can be easily removed or replaced when needed, reducing the complexity of the overall system while maintaining effective coverage during use.
Data Source
AI summary
A utility vehicle includes a seat mounted to a vehicle body frame to seat a passenger thereon; a side member positioned outward in a vehicle width direction relative to the seat and forming a part of the vehicle body frame; an access opening defined by the side member, the seat being accessible by the passenger through the access opening; a door rotatably mounted to the side member to open and close a part of the access opening; and a protective cover provided between the door and the side member and coupled to the door and to the side member; the protective cover being rotatable with respect to the side member along with the door and closing at least a part of a portion of the access opening, which portion is above the door, in a state where the door is closed.