Crankless Fulcrum ATV Jack with Suspension Engagement
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Solution Overview
Problem
Conventional jacks are inefficient and cumbersome for changing tires on all-terrain vehicles (ATVs) due to limited space, varying terrain heights, and complex suspension systems, requiring extensive time and stability concerns.
Innovation Solution
A compact, non-pneumatic crankless fulcrum ATV jack system with a telescoping and adjustable leg, clamping engagement member, and safety locks, allowing for quick and stable lifting of ATVs by preloading the suspension system, facilitating tire changes and other repairs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If a conventional screw jack is used to lift an ATV, then the jack can support the vehicle weight, but it takes considerable time to expand the jack to lift the tire off the ground
Solution Approach 1:
The jack leg is pre-positioned beneath the ATV frame before the lifting operation begins. The engagement member is预先 attached to the suspension system, so when the ATV is driven forward, the lifting action occurs immediately without the need to first position or assemble the jack components.
Solution Approach 2:
Instead of the jack actively lifting the ATV by extending upward, the ATV is driven forward onto the stationary jack leg, causing the vehicle to lift itself. This reverses the traditional jack operation where the jack moves to lift the vehicle; here, the vehicle moves to engage the jack.
2Reliability
If the jack is positioned on rough or muddy ground, then the jack may be driven into soft ground and become ineffective or difficult to retrieve, but positioning the jack further from the optimal spot reduces lifting effectiveness
Solution Approach 1:
The engagement member is预先 attached to the suspension system before the lifting operation, ensuring that the jack engages at the correct position on the ATV frame regardless of ground conditions. This preliminary positioning eliminates the need to precisely locate the jack foot on the ground.
Solution Approach 2:
The suspension system serves as an intermediary between the jack and the ground. By engaging the suspension rather than relying on ground contact for positioning, the jack transfers the lifting force through the vehicle's own structure, bypassing the problematic soft or muddy ground conditions.
3Length of moving object
If the jack engages the ATV frame as is common with car jacks, then the frame has to be lifted a considerable distance so that the wheel will actually come off the ground, but this requires a larger and less compact jack
Solution Approach 1:
The engagement member is预先 attached to the suspension system at the optimal lifting point, so that when the jack engages, it immediately acts on the suspension to lift the wheel. This preliminary positioning ensures efficient force application without requiring excessive jack extension.
Solution Approach 2:
The suspension system acts as an intermediary that amplifies the jack's lifting action. By engaging the suspension rather than the frame directly, a smaller jack can achieve greater wheel elevation because the suspension's mechanical advantage multiplies the lifting effect.
4Length of moving object
If a compact jack design is used to fit limited ATV space, then the jack may not have sufficient length to lift the tire off the ground on ATVs with higher ground clearance
Solution Approach 1:
The suspension system serves as a mechanical intermediary that extends the effective lifting reach. By engaging the suspension at its attachment point to the frame, the jack leverages the suspension's existing structure to achieve greater lifting height without requiring a proportionally longer jack leg.
Solution Approach 2:
The system adapts to different ground clearances by utilizing the suspension's range of motion. As the suspension compresses and extends, it dynamically adjusts the lifting geometry, allowing a compact jack to effectively service ATVs with varying wheelbases and ground clearances.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The ATV jack system significantly reduces the time required to lift ATVs, enhances stability, and allows for efficient tire changes and repairs, even in challenging terrain conditions, while maintaining a compact design.
Implementation Method 1
a telescoping and adjustable leg (305), wherein the leg is configured to extend in a pre-extended position prior to loading at a fixed length greater than the distance of the suspension system to the ground
Implementation Method 2
a clamp-on engagement member (14) configured to reversibly engage a tube (84) disposed on an ATV suspension system
Data Source
AI summary
An ATV jack may include an adjustable jack leg and an engagement member configured to engage a bracket disposed on an ATV to non-pneumatically lift the ATV to enable changing of a tire.