Aerodynamically optimized blade system for robotic lawnmowers with loss-free screw locking

Abstract

Blade system for robotic lawnmowers, comprehensive - a double-edged stainless steel knife blade (2) with titanium carbide coating - a fastening screw (1) made of hardened steel with chemical screw locking (3), characterized in that an aerodynamically optimized shape (Figure 1) of the knife blade (2) and screw (1) is present to reduce air resistance during the mowing process.

Description

Technical area

[0001] The invention relates to a blade system for use on robotic mowers, in particular an aerodynamically and efficiently optimized system. It is equipped with a loss-free screw lock for holding and securing cutting blades on a blade disc. State of the art

[0002] Conventional blade systems for robotic lawnmowers typically have weaknesses, such as screw connections that become loose due to vibrations, inadequate corrosion protection, and component geometries that are unfavorable to aerodynamics, which leads to increased energy consumption, noise generation, and reduced cutting performance. Object of the invention

[0003] The object of the invention is to provide a knife blade system that enables high cutting performance while simultaneously increasing operational reliability, improving energy efficiency and reducing noise. Solution

[0004] The task is solved by a knife blade system that includes the following features: • A double-sided ground stainless steel blade (2) with an aerodynamically shaped contour and titanium carbide coating • A fastening screw (1) made of hardened steel with zinc flake coating for corrosion protection • A chemical screw locking agent (3) that prevents self-loosening under operating conditions • The overall construction ( Fig. 1) is designed for low air resistance, which reduces the energy consumption of the robotic lawnmower and improves smooth running • Has a low installation height (= screw head projection), so that low cutting heights can be achieved • A threadless screw shaft (7) for precise positioning without damaging the screw thread Fig.1 shows a preferred embodiment of the knife blade system according to the invention consisting of a knife blade (2) and a fastening screw (1) with integrated chemical screw locking means (3).

[0005] The aerodynamically shaped blade (2) and the flat screw head (1) improve airflow during operation. The optimized screw collar (4) guides the centrifugal knife precisely in the bore (5) with minimal flow resistance.

[0006] The defined gap dimensions were specially adapted for use in dirty environments, making the system suitable for demanding operating conditions.

Claims

[1] Blade system for robotic lawnmowers, comprising - a double-edged stainless steel knife blade (2) with titanium carbide coating - a fastening screw (1) made of hardened steel with chemical screw locking (3) characterized by that an aerodynamically optimized design ( Fig. 1) the knife blade (2) and screw (1) to reduce air resistance during the mowing process. [2] Blade for robotic lawnmowers, characterized by that the knife blade (2) is sharpened on both sides. [3] Blade for robotic lawnmowers according to claim 2, characterized by that the knife blade (2) is provided with a titanium carbide coating for corrosion protection. [4] Blade screw for robotic lawnmowers, characterized by that a zinc flake coating is present for corrosion protection. [5] Blade screw for robotic lawnmowers according to claim 4, characterized bythat there is a hexagon, Torx or multi-tooth recess (6) for driving the screw. [6] Blade screw for robotic lawnmowers according to one of the preceding claims, characterized by that an optimized screw collar (4) is present for precise guidance in the bore (5) of the centrifugal force meter. [7] Blade screw for robotic lawnmowers according to one of the preceding claims, characterized by that there is a low installation height (= screw head projection) (1) (4) to reduce the cutting height. [8] Blade screw for robotic lawnmowers according to one of the preceding claims, characterized by that a chemical screw locking agent (3) is present for self-locking and preventing screw loss. [9] Blade screw for robotic lawnmowers according to one of the preceding claims, characterized by that a threadless screw shaft (7) is provided for precise positioning and protection of the screw thread.

Images