Convertible Mower Pivot Handle for Push-Ride Mode Switching
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Solution Overview
Problem
Users face challenges with existing lawn mowers, as they either have long mowing times with push mowers or require expensive and cumbersome riding mowers for larger areas, with no suitable solution for smaller yards that allow for both push and ride functionality.
Innovation Solution
A convertible push-type mower that can transition from a walk mode to a ride mode, featuring a pivotable handle assembly, split throttle control, and electric motor-powered rear wheels, allowing users to seamlessly switch between modes without changing gears or flipping switches, and includes safety features like stop buttons and indicators to prevent accidents.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If a push mower is used for smaller yards, then the mower is compact and easy to store, but the mowing time becomes excessively long
Solution Approach 1:
The mower incorporates a convertible design where the handle assembly can pivot between a rearward position (push mode) and a forward position (ride mode). This dynamic reconfiguration allows the same compact mower to adapt between two operational modes, enabling users to switch from manual pushing to motorized propulsion as needed, thereby reducing mowing time without requiring a larger dedicated riding mower
Solution Approach 2:
The mower is designed to perform multiple functions: it can operate as a traditional push mower for small areas and transform into a riding mower for larger areas. The electric motors on the rear wheels provide propulsion in ride mode, while the cutting deck and blade remain the same. This multi-functionality allows a single compact device to replace both a push mower and a riding mower
2Productivity
If a riding mower is used for larger areas, then the mowing speed increases, but the mower becomes expensive and difficult to store
Solution Approach 1:
The handle assembly includes a pivot mechanism that allows it to rotate between a rearward position for push mode and a forward position for ride mode. This dynamic transformation enables the mower to convert from a compact push configuration to a riding configuration, providing high-speed mowing capability only when needed for larger areas, while maintaining compact storage size
Solution Approach 2:
The same mower body with cutting deck serves dual purposes: as a push mower for small yards and as a riding mower for large yards. The electric motors are integrated into the rear wheels and provide propulsion in both modes, though primarily utilized in ride mode for high-speed operation. This eliminates the need for separate push and riding mowers
3Adaptability or versatility
If a convertible mower is designed with pivotable handle and multiple modes, then the versatility improves, but the device complexity increases
Solution Approach 1:
The handle assembly is segmented into movable and fixed portions, with a pivot mechanism that allows rotation between modes. The locking mechanism is separated into distinct components (locking pin, apertures, springs) that work independently but coordinate together. This segmentation makes the complex conversion mechanism more manageable and easier to understand
Solution Approach 2:
The locking mechanism uses springs to automatically return the locking pin to its neutral position and provides automatic engagement when the handle reaches either the push mode or ride mode position. This self-service feature reduces the need for complex control systems, buttons, or electronic switches, simplifying the overall device while maintaining versatile mode conversion capability
Data Source
AI summary
The present invention is directed to a small push-type lawn mower that can be converted into a riding mower. The mower includes a platform at the rear of the mower deck, and its handle assembly that can be pivoted forward making room for a user to step onto the platform. The handle assembly includes controls that drive electric motors that power the rear wheels allowing the user to ride the mower. The handle assembly can be pivoted rearwardly so that the user can access and grab the handle assembly and push the mower as is well known.