Adjustable Mower Handle Assembly for Standing and Walking Operation
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Solution Overview
Problem
Self-propelled lawn mowers with fixed standing platforms and handles present ergonomic challenges for operators of varying heights, leading to awkward positions and safety concerns due to the mower's mobility and 360-degree rotations.
Innovation Solution
Adjustable handles, including a front handle, left and right control levers, and a back handle, which are individually adjustable and releasably secured to supports on the lawn mower, allowing for customizable height positions to accommodate operators of different heights.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If fixed handle positions are used on the lawn mower, then the structure is simple and easy to manufacture, but operators of varying heights experience awkward operating positions and ergonomic issues
Solution Approach 1:
The patent applies the dynamics principle by transforming the fixed handle structure into an adjustable one. The handle assembly includes multiple handlebars that can be positioned at different heights and angles, allowing the structure to adapt to various operator heights and preferences. This dynamic configuration resolves the contradiction by enabling position adaptability while maintaining reasonable structural complexity through modular design.
Solution Approach 2:
The patent implements parameter changes by providing handles with adjustable height and angular parameters. The opposed handlebars can be positioned at different vertical heights and angular orientations, allowing operators to customize the handling parameters to their body dimensions. This resolves the adaptability issue while the adjustment mechanism maintains acceptable complexity levels.
2Reliability
If fixed handle positions are used on the lawn mower, then the manufacturing process is simple, but safety concerns arise due to awkward operating positions
Solution Approach 1:
The adjustable handle assembly allows operators to dynamically position the handles at optimal heights and angles for safe operation. This dynamic positioning capability improves operating safety by ensuring all operators can reach controls comfortably, while the modular adjustment mechanism maintains reasonable manufacturing ease.
Solution Approach 2:
The patent enables parameter changes in handle height and angle to improve safety for operators of different statures. By allowing customization of these parameters, the system ensures safe and comfortable operation for all users while the adjustment mechanism remains manufacturable with standard components.
3Ease of operation
If fixed handle positions are used on the lawn mower, then the overall structure remains simple, but operators experience ergonomic strain
Solution Approach 1:
The patent applies parameter changes by allowing operators to adjust handle height and angular parameters to match their ergonomic requirements. This customization improves ease of operation and reduces strain, while the adjustment mechanism maintains acceptable structural complexity through modular design and standard components.
Data Source
AI summary
Adjustable handles that are uniquely designed and mounted to a self-propelled lawn mower to improve and accommodate the different operating requirements by the operator standing on a sulky device or in a walking position behind the lawn mower. The adjustable handles comprise a front handle, a left control handle lever, a right control handle lever, and a back handle, each individually adjustable and releasably fixed to the same opposed supports or plates fixedly secured to the lawn mower.