Off-Road Vehicle Frame Layout for Removable Cargo Box Mounting
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Solution Overview
Problem
Off-road recreational vehicles face challenges in efficiently accommodating removable cargo boxes and engine components while maintaining structural integrity and ease of operation on harsh terrains.
Innovation Solution
The design incorporates a frame with removable cargo box support members and a suspension system, allowing the cargo box to be easily detached with fewer than eight fasteners, and an engine cradle with portions extending forward and rearward of the engine block for enhanced stability and accessibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the cargo box is securely fastened to the frame with multiple fasteners, then the structural integrity and stability of the cargo box is improved, but the ease of removal and installation of the cargo box deteriorates
Solution Approach 1:
The fastening system is segmented into multiple individual fasteners distributed across the cargo box attachment points. This allows the cargo box to be securely fastened when all fasteners are engaged, while still enabling easy removal by simply undoing the fasteners. The segmentation of the fastening function into discrete, independently operable units resolves the contradiction between stability during use and ease of removal.
2Stability of the object's composition
If the engine cradle extends under the engine block for enhanced stability, then the structural support and stability of the engine is improved, but the device complexity and manufacturing difficulty deteriorates
Solution Approach 1:
The engine cradle is merged with the vehicle frame structure, combining the engine support function with the existing chassis framework. The cradle extends forward and rearward from the engine block and integrates with the frame members, providing enhanced stability without requiring a completely separate complex support structure. This merging reduces overall device complexity while achieving the desired engine stability.
3Strength
If the cargo box floor extends over the cargo box support member, then the structural strength and load distribution of the cargo box is improved, but the manufacturing precision and assembly difficulty deteriorates
Solution Approach 1:
The cargo box support member serves multiple functions: it provides structural support for the cargo box floor, acts as an attachment point for fasteners, and distributes loads across the frame. This multi-functionality reduces the need for separate components and complex precision assemblies, as the support member is designed to handle multiple roles simultaneously, simplifying both manufacturing and assembly while maintaining strength.
Data Source
AI summary
A utility vehicle including a frame, a body supported by the frame, a seating area supported by the frame, front and rear ground engaging members supporting the frame and the body, and a powertrain drivingly coupled to the front and rear ground engaging members. The powertrain includes a transmission and an engine having a plurality of cylinders. The engine includes an intake manifold, a throttle valve, and an exhaust. The intake manifold and throttle valve are positioned longitudinally forward of the plurality of cylinders and the exhaust is positioned longitudinally rearward of a forwardmost portion of the plurality of cylinders.