Cutting disc for a robotic lawnmower with protective cover

The multi-part cutting disc with a lower disc and upper cover effectively prevents grass blockage, ensuring reliable operation and longevity while adapting to diverse robotic lawnmower models and mounting systems.

DE202025002559U1Active Publication Date: 2026-04-09NAPIORKOWSKI PATRYK
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Patent Information

Authority / Receiving Office
DE · DE
Patent Type
Utility models
Current Assignee / Owner
Filing Date
2025-09-01
Publication Date
2026-04-09

AI Technical Summary

Technical Problem

Conventional cutting discs for robotic lawnmowers are prone to grass clipping blockage, leading to reduced performance, increased wear, and safety risks due to debris penetration.

Method used

A multi-part cutting disc design comprising a lower disc with rotatably mounted blades and an upper cover that reduces grass penetration by partially covering the blade area, allowing free rotation, with flexible mounting options and adaptable geometric shapes and dimensions.

Benefits of technology

The design reliably prevents blade jamming, enhances operational reliability, extends service life, and accommodates various robotic lawnmower models with flexible mounting and material variations.

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Abstract

Cutting disc for a robotic lawnmower, consisting of a lower disc with several rotatably mounted blades and an upper cover that is connected to the lower disc and partially covers the blades, thus preventing blockage by grass.
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Description

Technical field

[0001] The invention relates to the field of cutting devices for automatic lawnmowers and robotic lawnmowers, in particular a multi-part cutting disc with rotatably mounted blades and a protective cover. State of the art

[0002] Conventional cutting discs typically consist of a single carrier disc with several rotating blades. These designs have the disadvantage that grass clippings and other debris can penetrate the blade area and block the rotation. This leads to reduced performance, increased wear, and safety risks. Object of the invention

[0003] The task is to provide a cutting disc that reliably prevents the blades from becoming blocked by grass and is at the same time flexibly adaptable to different robotic lawnmower models and mounting systems. Solution to the task

[0004] The solution consists of a cutting disc made up of a lower disc and an upper cover. Several blades are rotatably mounted on the lower disc. The upper cover is connected to the lower disc and partially covers the blade area, thus reducing grass penetration and allowing the blades to rotate freely. The connection can be made using screws, rivets, snap-fit ​​connections, bayonet fittings, clamps, or direct fastening. A central mounting zone can have various geometric shapes and dimensions (e.g., round, hexagonal, polygonal). The disc thickness can vary (e.g., 3 mm, 4 mm, 5 mm, 7 mm, or more) without affecting its functionality. Advantages - Reliably prevents the blades from jamming. - Increased operational reliability and longer service life. - Adaptable to different robot models. - Flexible mounting options. - Variable number of blades and materials. - Variable thickness of the disc. Variants

[0005] The cover can be designed as a separate or integral component. The number of blades can vary (3, 6, 9, 12, or more). The blades can be straight, curved, serrated, or asymmetrical and made of different materials (e.g., steel, titanium, ceramic, composites). The cover can include additional features such as ribs, reinforcements, or ventilation openings. Attachment points can be provided in any number and arrangement. Exempt from protection

[0006] Colors, logos, markings or lettering are not part of the subject matter of the protection and have no influence on the scope of protection.