Motor-Driven Screw Leveling Jack for RVs
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Solution Overview
Problem
Existing jacks for leveling and stabilizing recreational vehicles lack efficient mechanisms for precise leveling and stabilization, particularly when dealing with uneven surfaces, and often require manual adjustment and lack of automatic leveling capabilities.
Innovation Solution
A jack system with a first and second lifting section connected by an intermediate member, featuring a motor-driven screw mechanism that allows for automatic extension and retraction, along with a mounting plate for secure attachment to a vehicle, enabling independent control of each lifting section for precise leveling and stabilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If manual adjustment mechanisms are used in existing jacks, then device complexity is reduced, but leveling precision and automation capability deteriorate
Solution Approach 1:
The patent replaces manual mechanical adjustment mechanisms with an automated screw-driven lifting mechanism. The screw mechanism converts rotational motion into linear displacement, enabling automatic extension and retraction of lifting sections without manual intervention, thus achieving automatic leveling while maintaining relatively simple mechanical structure.
Solution Approach 2:
The jack system enables each lifting section to independently adjust its position through the screw mechanism, allowing the system to self-level without external manual operation. The independent control of each lifting section enables the jack to automatically compensate for uneven surfaces and achieve precise leveling.
2Measurement precision
If independent control of each lifting section is implemented, then leveling precision is improved, but device complexity increases
Solution Approach 1:
The jack is divided into multiple independently controlled lifting sections, each capable of individual adjustment. This segmentation allows each section to independently respond to terrain variations and achieve precise leveling of the vehicle, while the modular structure keeps each control unit relatively simple.
Solution Approach 2:
The lifting sections are designed with dynamic adjustment capability through the screw mechanism, allowing each section to independently change its position. This dynamic control enables precise adaptation to uneven surfaces while maintaining a relatively simple mechanical structure compared to rigid fixed-position systems.
3Manufacturing precision
If screw mechanism with motor-driven actuation is used, then extension and retraction precision is improved, but device complexity and manufacturing cost increase
Solution Approach 1:
The patent employs a screw mechanism that converts rotational motion from a motor into precise linear displacement for extension and retraction of lifting sections. This mechanical substitution provides precise control while using standard motor and screw components that are relatively easy to manufacture and assemble.
Solution Approach 2:
The screw mechanism allows precise control of extension and retraction by changing the rotational parameters of the motor. By controlling the number of rotations and rotational speed, the system achieves precise positioning of lifting sections with standard manufacturing tolerances.
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 jack system provides automatic and precise leveling and stabilization of recreational vehicles by allowing independent control of each lifting section, ensuring the vehicle is securely positioned on uneven surfaces, enhancing safety and convenience.
Implementation Method 1
featuring a motor-driven screw mechanism that allows for automatic extension and retraction
Data Source
AI summary
A leveling and stabilizing jack includes an intermediate member joining first and second lifting sections. Each lifting section includes a cross beam, a leg, a brace, a foot, a motor and a drive screw. The motor powers the drive screw, which is operably associated with the leg, to cause the leg to extend away from or retract toward the cross beam depending on the motor's direction of rotation. A motor control can control the motor of each of the lifting sections independently in a manner that results in leveling of the jack when deployed.