Lawnmower Bagging Frame With Pivoting Access From the Seat

Resolve Bottlenecks,
Find Innovative Solutions
Generate Solutions

Solution Overview

Problem

Operators face difficulty in accessing and emptying the bagging system of lawnmowers, particularly riding lawnmowers, requiring them to dismount to perform these tasks.

Innovation Solution

A lawnmower design featuring a bagging frame with a first and second section pivotally coupled through a magnetic interface, allowing the bagging system to be operated from a seated position without dismounting, facilitated by a handle and a quick release mechanism.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If the bagging system is fixed to the lawnmower frame, then the bagging system remains stable during operation, but the operator cannot access the bagging system while riding the lawnmower

Engineering Contradiction:
Improveaccessibility of bagging systemVSAvoidstability of bagging system
Core Design Contradiction:
Ease of operationVSStability of the object's composition

Solution Approach 1:

The bagging frame is divided into a first section that is fixed to the lawnmower frame and a second section that is movable relative to the first section. This segmentation allows the bagging system to remain stable during operation while enabling the operator to access and empty the bag from a seated position by moving the second section.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The bagging system transitions from a completely fixed structure to a dynamic structure where the second section can move relative to the first section through a pivot point. This dynamic capability allows the operator to access the bagging system during operation while the system remains stable when locked in position.

Inventive Principle:
Principle #15Dynamics

2Productivity

If the operator dismounts to empty the bag, then the bag can be emptied completely, but the mowing process is interrupted

Engineering Contradiction:
Improvecontinuous mowing operationVSAvoidbag emptying accessibility
Core Design Contradiction:
ProductivityVSEase of operation

Solution Approach 1:

A handle is provided as an intermediary mechanism that the operator can manipulate from a seated position to move the second section of the bagging frame. This allows the operator to empty the bag without dismounting, maintaining continuous mowing operation while still achieving complete bag emptying.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The bagging system is designed to be self-accessible during operation through the movable second section and handle mechanism. The operator can service the bag (empty it) while remaining seated on the lawnmower, eliminating the need to stop the mowing process for bag maintenance.

Inventive Principle:
Principle #25Self-service

3Ease of operation

If the bagging frame is made movable, then the operator can access the bag from a seated position, but the bagging system becomes more complex

Engineering Contradiction:
Improveaccessibility of bagging systemVSAvoidcomplexity of bagging frame
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The bagging frame is divided into two sections connected by a pivot point, with the second section being movable. This segmentation provides the necessary mobility for operator access while keeping each section relatively simple in structure, avoiding excessive complexity.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

A magnetic release mechanism is used to replace complex mechanical locking systems. The magnetic mechanism provides a simple yet effective means of securing and releasing the movable second section, reducing overall system complexity while maintaining ease of operation.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

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

Enables easy and convenient operation of the bagging system from the operator's seat, enhancing usability and reducing the need for dismounting during emptying.

Implementation Method 1

a magnetic release mechanism

Methodology Applied
Scientific EffectMagnetic force: Magnetism

Data Source

PatentEP4245113B1Lawnmowers and associated features
Publication Date: 2026.05.13 TECHTRONIC CORDLESS GP
  • EP4245113B1 patent drawingFigure 1
  • EP4245113B1 patent drawingFigure 2
  • EP4245113B1 patent drawingFigure 3~4

AI summary

Lawnmowers are provided. A lawnmower includes a frame; a mower deck housing one or more cutting implements, the mower deck being coupled to the frame; a bagging system coupled to the frame, the bagging system comprising: a bagging frame removably coupled to the frame, wherein the bagging frame comprises a first section statically coupled relative to the frame and a second section configured to move relative to the first section of the bagging frame; a handle coupled to the second section of the bagging frame; and a bag supported by the bagging frame.