Multi-configurable Mower Deck with Removable Baffles

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Solution Overview

Problem

Existing mower decks are limited to either side-discharge or rear-discharge configurations, requiring users to switch between decks for different cutting modes, increasing complexity and cost, and are complex to manufacture due to permanent sidewalls and specialized shapes.

Innovation Solution

A single, multi-configurable mower deck utilizing removable baffles and blocking plates to convert between side-discharge, rear-discharge, mulching, and combined mulching/rear-discharge configurations, allowing users to customize cutting modes without needing multiple decks.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a single mower deck is designed to provide multiple discharge configurations (side-discharge, rear-discharge, mulching), then adaptability and versatility are improved, but device complexity increases due to the need for removable baffles and blocking plates

Engineering Contradiction:
Improvecutting configuration optionsVSAvoiddeck structure complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The mower deck is segmented into functional zones using removable baffles and blocking plates that can be installed or removed to create different discharge configurations. These segmented components allow the deck to be divided into cutting chambers, discharge passages, and mulching zones that can be reconfigured based on user needs.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The mower deck transitions from a static, single-configuration design to a dynamic, multi-configuration system through the use of removable baffles and blocking plates. These components can be added or removed to change the deck's functionality between side-discharge, rear-discharge, and mulching modes, making the system adaptable rather than fixed.

Inventive Principle:
Principle #15Dynamics

2Reliability

If dedicated side-discharge and rear-discharge mower decks are manufactured with permanent sidewalls and specialized shapes, then cutting configuration performance is improved, but manufacturing complexity and cost increase

Engineering Contradiction:
Improvecutting configuration performanceVSAvoidmanufacturing complexity
Core Design Contradiction:
ReliabilityVSEase of manufacture

Solution Approach 1:

A single mower deck design serves multiple functions by incorporating removable baffles and blocking plates that enable the same deck to perform side-discharge, rear-discharge, and mulching operations. This universal design eliminates the need to manufacture separate dedicated decks for each configuration, reducing manufacturing complexity while maintaining configuration-specific performance.

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

Solution Approach 2:

The mower deck's functional parameters are changed through the addition or removal of specific components (baffles and blocking plates) rather than through different manufacturing processes. By changing the configuration parameters through component assembly rather than manufacturing parameters, the system achieves multiple specialized functions without increasing manufacturing complexity.

Inventive Principle:
Principle #35Parameter changes

3Manufacturing precision

If users switch between side-discharge and rear-discharge configurations by changing entire mower decks, then cutting configuration accuracy is improved, but time consumption and operational complexity increase

Engineering Contradiction:
Improveconfiguration accuracyVSAvoidconfiguration switching time
Core Design Contradiction:
Manufacturing precisionVSLoss of time

Solution Approach 1:

Instead of replacing entire mower decks to change configurations, the system segments the deck into modular components that can be independently added or removed. Users can switch between side-discharge and rear-discharge configurations by simply installing or removing specific baffles and blocking plates, dramatically reducing configuration switching time while maintaining configuration accuracy.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The removable baffles and blocking plates are designed to be pre-fabricated and easily attachable components that prepare the mower deck for different configurations in advance. Users can quickly switch between configurations by installing pre-made components rather than modifying the entire deck structure, reducing the time and effort required for configuration changes.

Inventive Principle:
Principle #10Preliminary action

Data Source

PatentEP3678468B1Multi-configurable mower deck
Publication Date: 2024.08.14 BRIGGS & STRATTON CORP
  • EP3678468B1 patent drawingFigure 1
  • EP3678468B1 patent drawingFigure 2
  • EP3678468B1 patent drawingFigure 3

AI summary

A multi-configurable mower deck for use with a lawnmower, the mower deck including a top surface, a front leading edge, at least one side wail extending from the top surface, and at least one partial rear wall extending from the top surface. The mower deck includes both a side-discharge opening formed on one side of the mower deck and a rear- discharge opening formed through the at least one partial rear wall. Additionally, the mower deck may include a selectively removable secondary front baffle configured to block the flow of clippings through the side-discharge opening and direct the flow of clippings toward the rear-discharge opening. The mower deck may also include at least one selectively removable rear baffle, wherein the at least one selectively removable rear baffle is configured to at least partially block the rear-discharge opening.