Lawn Mower Cutting Assembly With Debris-Blocking Protection Space
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Solution Overview
Problem
The cutting member of a lawn mower is prone to getting stuck by mud or wound by grass, leading to reduced efficiency and potential damage, as well as difficulty in cleaning.
Innovation Solution
A cutting assembly with a cutter head, protection member, and blocking members that form a protection space, where the cutting member is rotatably arranged, and blocking members prevent external debris from entering, reducing the likelihood of mud and grass accumulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the cutting member is exposed to perform cutting operation, then cutting efficiency is improved, but the cutting member is easily stuck by mud or wound by grass
Solution Approach 1:
The protection space is segmented into multiple regions by blocking members with protrusions, creating separate zones that control debris movement while allowing cutting operation. The blocking members divide the protection space to prevent mud and grass from reaching the cutting member while maintaining cutting effectiveness.
Solution Approach 2:
The protection member acts as an intermediary structure between the external environment and the cutting member. It creates a protective barrier that filters and controls the interaction between debris (mud, grass) and the cutting member, allowing cutting operation while preventing harmful accumulation.
2Productivity
If the cutting member is exposed to perform cutting operation, then cutting function is improved, but cleaning difficulty increases
Solution Approach 1:
The protection space is divided into segmented regions by blocking members, creating organized zones that facilitate debris removal. The protrusions on blocking members create defined spaces that prevent chaotic accumulation, making cleaning more systematic and easier to access.
Solution Approach 2:
The protection member is designed as a separable component that can be removed from the cutter head. This allows the protection member and accumulated debris to be easily extracted and cleaned separately from the cutting member, significantly improving maintenance ease without affecting cutting function.
3Reliability
If blocking members are added to prevent debris entry, then protection effect is improved, but device complexity increases
Solution Approach 1:
The protection member serves multiple functions simultaneously: it creates the protection space, provides blocking members with protrusions to control debris, and acts as a separable cleaning component. This multi-functionality reduces the need for additional separate components, maintaining structural simplicity while achieving reliable protection.
Solution Approach 2:
The protection member is designed as a relatively simple shell structure that encloses the cutting member. This thin-walled protective enclosure provides effective debris protection while adding minimal structural complexity, as it is a single integrated component rather than multiple complex elements.
Data Source
AI summary
A cutting assembly and a lawn mower are provided. The cutting assembly includes a cutter head, a protection member, blocking members and a cutting member. The cutter head is connected to the lawn mower body. The protection member is snap-fitted with the cutter head. The blocking members are arranged in a circumferential direction of the protection member and provided between the cutter head and the protection member. Each of the blocking members includes a protrusion protruding toward a center of the cutter head. The protection member, the cutter head and the protrusion form and enclose a protection space, the protection space being located on a side of the protrusion proximate to an edge of the cutter head. The cutting member is rotatably provided in the protection space, the cutting member extends at least partially beyond the protection space, and the cutting member is configured for cutting plants.