Golf Cart Bar Linkage for Mode Switching
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Solution Overview
Problem
Conventional golf carts either require golfers to walk the entire course, eliminating desired exercise, or use motorized carts that eliminate walking exercise, and existing solutions for convertible carts face difficulties in steering and wheelbase adjustments between ride-on and walk-behind modes.
Innovation Solution
A battery-powered golf cart with a bar linkage system that connects three units - a drive/riding unit, a golf bag support unit, and a front caster wheel assembly - allowing for seamless switching between ride-on and walk-behind modes with improved steering effectiveness and adjustable wheelbase, utilizing an electronic differential for power distribution and a remote radio controller for steering.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the steering column inclination angle is changed significantly to switch between walk-behind and ride-on modes, then the cart can adapt to different operational modes, but steering becomes difficult requiring large hand movements
Solution Approach 1:
The steering system is segmented into a fixed steering column and a movable steering wheel assembly. The steering wheel can be positioned at multiple fixed angles relative to the steering column, allowing mode adaptation without requiring large movements of the steering column itself. This segmentation enables independent optimization of steering ease and mode adaptability.
Solution Approach 2:
The steering wheel assembly is made dynamically adjustable between different angular positions to accommodate different operational modes. The steering wheel can be rotated to specific angles and locked in place, providing dynamic adaptability while maintaining a stable steering connection that ensures ease of operation in both modes.
2Device complexity
If the wheel base length is kept constant in both modes, then the structure is simplified, but steering becomes even more difficult for a long cart in walk-behind mode
Solution Approach 1:
The wheel base length is made dynamically adjustable through a telescopic mechanism. In walk-behind mode, the wheel base is shortened to improve maneuverability and steering ease. In ride-on mode, the wheel base is extended to provide stability and comfort. The telescopic mechanism allows the same structural components to achieve different effective lengths without requiring completely different structures for each mode.
3Device complexity
If the drive unit has only two wheels with ground support under the golf bag, then the structure is simplified, but the ground support must be lifted from the ground during driving requiring coordination skills
Solution Approach 1:
The ground support under the golf bag is made dynamically adjustable in height. In transport mode, the ground support is positioned low to the ground for stability. During driving, the ground support is automatically or easily elevated to clear the ground, eliminating the need for complex coordination skills. The height adjustment mechanism is designed to be simple and intuitive, reducing the skill requirement while maintaining structural simplicity.
Data Source
AI summary
There is provided a battery powered golf cart with selectable dual operative modes, walk-behind/ride-on modes, including three units: a drive/riding unit, a golf bag support unit, and a front caster wheel assembly. The three units are interconnected for cooperative association in the two operative modes by a bar linkage system, having two stable positions.