Mower Height Adjustment via Walking Motor
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Solution Overview
Problem
Existing lawn mowers require manual effort and time to adjust the mowing height, which is labor-intensive and reduces working efficiency, as users need to bend down to operate the height adjustment mechanism.
Innovation Solution
A mower equipped with a second motor that drives the walking assembly to adjust the height of the cutting assembly relative to the ground, allowing for electric height adjustment without external motion, enabling quick and effortless height changes while maintaining self-propelled functionality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual height adjustment is used, then device complexity is reduced, but ease of operation deteriorates and loss of time increases
Solution Approach 1:
The patent combines the height adjustment function with the existing walking assembly by using the second motor to drive both walking and height adjustment through a unified transmission system. This merging approach enables electric height adjustment without adding separate complex adjustment mechanisms, thus improving ease of operation while controlling device complexity
Solution Approach 2:
The second motor and its transmission system are designed to perform multiple functions: driving the walking wheels for mobility and adjusting the cutting assembly height. This multi-functionality allows the same mechanical components to serve dual purposes, enabling electric height adjustment without proportionally increasing device complexity
2Productivity
If manual height adjustment is used, then device complexity is reduced, but productivity deteriorates
Solution Approach 1:
The height adjustment mechanism is merged with the walking assembly, using the second motor's power transmission system to control both mobility and height adjustment. This integration improves productivity by enabling quick electric adjustment without requiring separate complex adjustment devices
Solution Approach 2:
The patent replaces the manual mechanical height adjustment system with an electrically-driven system. The second motor electronically controls the height adjustment through the transmission system, substituting manual labor with automated mechanical action, thereby improving productivity while keeping device complexity manageable through shared components
3Ease of operation
If height adjustment handle is disposed on chassis, then device complexity is reduced, but ease of operation deteriorates
Solution Approach 1:
The patent replaces the manual height adjustment handle operation with an electrically-driven system. The second motor controls the height adjustment automatically, eliminating the need for users to manually operate a handle located on the chassis. This substitution improves ease of operation by removing the bending-down requirement while the shared transmission system keeps device complexity controlled
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 solution enhances working efficiency by allowing users to adjust the mowing height easily and quickly without manual effort, improving operational convenience and reducing fatigue, while maintaining the mower's self-propelled capability.
Implementation Method 1
a second motor capable of driving at least the walking assembly to drive the mower to walk on the ground
Data Source
AI summary
A mower includes a cutting assembly including a first motor for driving a cutter to rotate; a chassis supporting the cutting assembly; a walking assembly including walking wheels; and a second motor capable of driving at least the walking assembly to drive the mower to walk on the ground. The mower has a height adjustment mode, and when the mower is in the height adjustment mode, the second motor outputs power to adjust the height of the cutting assembly.