Cutter Disc Assembly With Centrifugal Fan Blades for Leaf Gathering
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Solution Overview
Problem
Existing mower blades struggle to effectively gather fallen leaves and shredded grass to the grass discharge port, especially in environments with scattered debris, leading to inefficiencies in grass discharge.
Innovation Solution
A cutter disc assembly with centrifugal fan blades and a suction fan system that enhances airflow to lift and gather debris, combined with a quick-detach leaf suction cover and fan blade design that reinforces structural stability and facilitates easy mode switching between mowing and leaf suction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a traditional mower blade is used, then the structure is simple, but the airflow is insufficient to gather fallen leaves and shredded grass to the discharge port
Solution Approach 1:
The patent combines the mowing function and the grass gathering function into a single integrated blade structure. The blade includes both cutting edges for mowing and raised rear edges that function as axial-flow fan blades for generating airflow. This merging of functions allows the blade to both cut grass and effectively gather fallen leaves and shredded grass to the discharge port, resolving the contradiction between simplicity and effectiveness.
Solution Approach 2:
The blade is designed to perform multiple functions simultaneously: it acts as both a cutting tool (with front and rear cutting edges) and an axial-flow fan (with raised rear edges). This multi-functionality enables a single component to achieve both mowing and efficient grass discharge, even in environments with fallen leaves and scattered debris, without requiring separate mechanisms.
2Productivity
If the blade acts as an axial-flow fan, then grass discharge is improved, but the ability to gather fallen leaves and scattered debris is insufficient
Solution Approach 1:
The blade employs different local structures to perform different functions: the front edge and rear edge have cutting edges for mowing, while the raised rear edges specifically function as axial-flow fan blades for generating airflow. This local differentiation allows the blade to effectively gather both cut grass and fallen leaves/scattered debris, improving adaptability to different environments while maintaining efficient grass discharge.
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 system effectively collects and discharges grass and leaves by increasing airflow and utilizing a dual-action fan blade design, ensuring efficient grass discharge and easy mode transitions.
Implementation Method 1
multiple centrifugal fan blades, the centrifugal fan blades being arranged on a top surface of the bottom plate and corresponding to the connecting ribs
Implementation Method 2
The suction fan of the mower is configured to direct shredded leaves through the leaf suction pipe, flowing from the leaf inlet to the leaf outlet
Data Source
AI summary
The present disclosure provides a cutter disc assembly, quick-detach leaf suction cover, fan blade, leaf suction device, cutting mechanism for a mower, and the mower including the same. The cutter disc assembly for the mower includes a cutter disc mounting body, centrifugal fan blades, and blades. The cutter disc mounting body, may include a mounting plate and a bottom plate provided with a through hole. The bottom plate and the mounting plate are connected by connecting ribs, and a hollow portion is formed between adjacent connecting ribs. The centrifugal fan blades are arranged on a top surface of the bottom plate and corresponding to the connecting ribs. The blades are arranged along an edge of a bottom surface of the bottom plate at intervals.