Electric ATV Frame Enclosure for Motor Protection and Mass Centralization
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Solution Overview
Problem
Conventional electric ATVs face challenges in easy assembly and maintenance, protection of drive motors, and centralization of heavy components, which are dispersed and prone to damage from rough terrains and flying debris.
Innovation Solution
The drive motor and battery are positioned within a enclosed region by the upper, lower, front, and rear frames, allowing for side installation and maintenance, protection from debris, and centralization of mass, with a power transmission system that includes a chain or drive shaft, and a motor control unit above or between the frames for efficient electrical connections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the drive motor is placed between the left and right rear wheels or overlapping the body frame, then the vehicle structure is compact, but the drive motor cannot be attached or detached from the side of the vehicle for assembly and maintenance
Solution Approach 1:
The vehicle frame is divided into multiple components (body frame, front frame, rear frame, side frames) that create an open space accessible from the side. The drive motor is positioned in this open space, allowing it to be attached or detached from the side of the vehicle without requiring disassembly of the entire frame structure.
2Stability of the object's composition
If heavy components (drive motor and battery) are located at a distance from each other, then the vehicle structure is flexible, but the mass is not centralized leading to poor stability
Solution Approach 1:
The drive motor and battery are both positioned within the open space created by the frame structure, concentrating heavy components in a centralized location near the center of gravity. This merging of heavy components in one area improves mass distribution and vehicle stability while the frame structure maintains flexibility through its modular design.
3Reliability
If the drive motor is exposed on the vehicle, then access for maintenance is easy, but the drive motor is vulnerable to damage from flying stones on rough terrains
Solution Approach 1:
The side frames and body frame collectively form a protective enclosure around the open space where the drive motor is located. This enclosure protects the drive motor from flying stones and debris on rough terrains while maintaining side accessibility for maintenance through the open design of the frame structure.
Data Source
AI summary
A vehicle includes upper frames, lower frames, a front frame, a rear frame, a pair of front wheels, a pair of rear wheels, a bar handle to steer the pair of front wheels, a drive motor to drive the pair of rear wheels, a battery to supply electric power to the drive motor, and a straddled seat provided at a higher position than the drive motor. The drive motor and the battery are located in a region surrounded by the upper frames, the lower frames, the front frame, and the rear frame in a side view of the vehicle.