Blade disc for robotic lawnmowers with weight-optimized outer contour

Abstract

Blade tensioner for robotic lawnmowers, comprising a rotationally symmetrical carrier disc (1) for receiving cutting blades (2) connected by means of screws (3), characterized in that there is a weight-reduced outer contour in a wave-shaped design ("flower pattern") with curvatures (5) evenly distributed around the circumference to optimize the moment of inertia and to reduce air turbulence.

Description

Technical area

[0001] The invention relates to a blade disc for robotic lawnmowers, in particular for the rotationally symmetrical mounting of blades for carrying out mowing operations on lawns. State of the art

[0002] Conventional blade discs usually consist of circular metal or injection-molded discs with individual blades mounted around their periphery. This design is mechanically robust, but not optimized in terms of weight, moment of inertia, and aerodynamic performance. Especially in battery-powered robotic mowers, the weight of the blade disc can have a significant impact on energy efficiency. Object of the invention

[0003] The object of the invention is to provide a blade disc (1) for robotic lawnmowers which, while maintaining the same function, has a reduced mass, an optimized inertia behavior and improved aerodynamics. Solution

[0004] This task is solved by a blade disc (1) with a rotationally symmetrical carrier disk featuring a lightweight outer contour (5) (so-called "flower pattern"). The outer contour is formed in a wave-like structure, with concave-convex curvatures (5) evenly distributed around the circumference. This design saves weight while maintaining stability and simultaneously reduces air turbulence, thus reducing energy consumption and noise during operation.

[0005] The form shown ( Fig. 1) serves to reduce mass and optimize air flow during mowing.

[0006] The number of bulges (5) can be adjusted depending on the blade layout and the diameter of the plate. The blade plate (1) is provided with several openings for central mounting (4) on a shaft.

[0007] This representation ( Fig. 1) corresponds to the preferred embodiment of the invention.

Claims

[1] Blade tensioner for robotic lawnmowers, comprising a rotationally symmetrical carrier disc (1) for receiving cutting blades (2) connected by means of screws (3) characterized by that there is a weight-reduced outer contour in a wave-shaped design (“flower pattern”) with curvatures (5) evenly distributed around the circumference to optimize the moment of inertia and to reduce air turbulence. [2] Knife plate according to claim 1, characterized by that of several concave-convex curvatures arranged symmetrically around the circumference (5).

Images