Robotic Mower Height-Adjustment Assembly for Slippage Stability

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Solution Overview

Problem

Conventional intelligent lawn mowers experience tire slippage issues, leading to reduced efficiency and effectiveness in mowing operations.

Innovation Solution

The mower incorporates a housing with a movable upper cover and a cutting mechanism, featuring an assisted height-adjustment assembly for the blade carrier disc, which includes a prime mover, blade carrier disc connectors, and a suspension-lift detection assembly to maintain stability and adjust cutting height, thereby preventing slippage.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Extent of automation

If a conventional intelligent lawn mower is used, then the mowing operation can be automated, but the tires may slip easily resulting in the mower failing to work properly

Engineering Contradiction:
Improveautomated mowing operationVSAvoidtire slippage
Core Design Contradiction:
Extent of automationVSReliability

Solution Approach 1:

The patent implements a movable upper cover that can shift position dynamically in response to terrain variations. This dynamic adjustment allows the cutting mechanism to maintain optimal contact with the ground while the movable cover absorbs vertical movements, preventing tire slippage on uneven surfaces and maintaining reliable operation during automated mowing.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The patent changes the structural parameter of the mower by introducing a movable upper cover that can change its position relative to the housing. This parameter change enables the system to adapt to different ground conditions, maintaining traction and preventing slippage while preserving the automated operation capability.

Inventive Principle:
Principle #35Parameter changes

2Adaptability or versatility

If the cutting height is fixed, then the structure is simple, but the mower cannot adapt to different mowing requirements and terrains

Engineering Contradiction:
Improveadjustable cutting heightVSAvoidstructure complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent implements a movable upper cover that can shift position dynamically in response to terrain variations. This dynamic adjustment allows the cutting mechanism to maintain optimal contact with the ground while the movable cover absorbs vertical movements, preventing tire slippage on uneven surfaces and maintaining reliable operation during automated mowing.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The movable upper cover serves multiple functions: it protects internal components, adjusts cutting height adaptively, and prevents tire slippage. This multi-functionality achieves adaptability without proportionally increasing structural complexity, as a single component performs multiple roles.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Data Source

PatentUS20240416769A1Robotic Mower
Publication Date: 2024.12.19 GLOBE (JIANGSU) CO LTD
  • US20240416769A1 patent drawing
  • US20240416769A1 patent drawing
  • US20240416769A1 patent drawing

AI summary

A robotic mower is provided and includes: a chassis; two or more wheels supporting the chassis, a blade motor adapted to power a cutting blade, a frame operatively supporting the blade relative to the chassis, and a guide member located between the frame and the chassis. The frame is movable, relative to the chassis, to allow adjustment of a height of the blade to the ground surface in a first direction. The guide member includes a base body and a cantilever, the cantilever is elastically attached to the base body.