DE202020101100U1 - Lawn mower with electronic control unit - Google Patents

Abstract

Lawn mower equipped with at least one grass cutting knife moved by an electric motor (4) and with a traction device which has a further electric motor (3), the lawn mower having a single control unit (10) for controlling the electric motor assigned to the at least one cutting knife and the further electric motor, characterized in that it has a container (8) for collecting grass and the only control unit has a section (15) for handling the container.

Description

The present invention relates to a lawn mower with an electronic control unit, in particular to a ride-on lawn mower.

In the prior art, lawnmowers are known which have an electric motor for moving one or more knives for cutting grass and an electric motor for moving the ride-on lawnmower; the electric motors are controlled by respective control units, a control unit usually being provided for each electric motor.

Ride-on lawnmowers are also known in which the control unit of the electric motor assigned to the knives and of the electric traction motor for moving the ride-on lawnmower is accommodated in a housing. Such a lawnmower is from the patents EP 2883437 and EP 2437131 known, both the use of a housing 30th for a circuit board 30a describe a control unit ECU, various sensors and a controller 18a of the electric motors assigned to the wheels and a controller 17a of the electric motor assigned to the knife.

In view of the prior art, the object of the present invention is to provide a lawnmower equipped with a control unit which differs from the known control units.

According to the present invention, said object is achieved by a lawnmower equipped with at least one grass cutting knife which is moved by an electric motor and with a traction device which has another electric motor, the lawnmower having a single control unit for controlling the at least one has an electric motor assigned to a cutting knife and further electric motor, the lawn mower according to the invention being distinguished in that it has a container for collecting grass and the only control unit has a section for handling the container.

With the aid of the present invention, a single control unit for a ride-on lawn mower can be provided, which is equipped with sections for controlling the electric motor assigned to the cutting blade, the electric traction motor and the grass collecting container.

According to the present invention, a lawn mower is therefore provided which is equipped with at least one grass cutting knife moved by an electric motor and with a traction device which has a further electric motor; the lawn mower has a single control unit for controlling the electric motor assigned to the at least one cutting blade and the further electric motor. The lawn mower has a container for collecting grass, and the single control unit has a section for handling the container.

• 1 eine schematische Darstellung des Aufsitz-Rasenmähers gemäß der vorliegenden Erfindung;
• 2 eine schematische Darstellung des Aufsitz-Rasenmähers der 1;
• 3 eine Darstellung zur Erläuterung der Steuereinheit des Aufsitz-Rasenmähers der 1.

The features and advantages of the present invention will become apparent from the following detailed description of a practical embodiment thereof, which is illustrated by way of non-limiting example in the accompanying drawings; show in it:

• 1 is a schematic representation of the ride-on lawnmower according to the present invention;
• 2nd is a schematic representation of the ride-on lawnmower 1 ;
• 3rd a diagram for explaining the control unit of the ride-on lawnmower 1 .

A lawn mower 1 , which is preferably a ride-on lawn mower, according to the present invention is described below with reference to FIG 1 and 2nd described. The ride-on lawn mower 1 has a control unit 10th on that in 3rd is shown in more detail and preferably in a housing 100 is arranged, which is preferably under a seat 2nd of the ride-on lawnmower 1 is arranged.

The control unit 10th has a section 11 to control the electric traction motor 3rd on; the section 11 includes instructions for powering the traction motor 3rd (MOTOR +, MOTOR-), instructions to accelerate or stop the traction motor 3rd after pressing the accelerator pedal of the ride-on lawnmower (FORW / REVERSE PEDAL, SWITCH BRAKE PEDAL) and instructions for the engine brake (BRAKE +, BRAKE-).

The control unit 10th also has a section 12th to control the at least one electric motor 4th on which is assigned to the cutting knife; the section 12th contains instructions for the power supply (POWER) and for stopping (CONTROL SIGNAL) the electric motor 4th . The section 12th manages alarms (ALARM1 +, ALARM1-).

The control unit 10th has a section 13 for handling various sensors, e.g. a temperature sensor 20th (SENSOR +, SENSOR-) as well as for the handling of different, on one display 5 existing signal lights (LICHTSCHALTER +, LICHTSCHALTER-) and the battery 7 (B +, B-) as well as for handling the user instructions.

The control unit 10th also has a section 14 for controlling an electrical actuator 6 (ACTUATOR +, ACTUATOR-), which is designed to adjust the height of the at least one cutting knife.

Furthermore, the control unit 10th a section 15 for the handling and control of the container 8th for collecting grass on. More specifically, the section includes 15 Instructions (ACTUATOR MOTOR +, ACTUATOR MOTOR-) for controlling the electric motor of the actuator 9 that introduces grass into the container 8th allows a signal (SWITCH GRASS BAG) to signal the presence of the container 8th on the ride-on lawn mower by a special sensor 21 for the presence / absence of the container, a signal for a full container (SWITCH BAG FULL) from a sensor arranged in the container 22 and instructions (SUMMER +, SUMMER-) for handling an audible signal that may indicate that the container 8th is either full or does not exist.

In addition, the control unit 10th a section 16 on that for the handling and control of at least one user interface 30th , which is, for example, a Bluetooth interface or a USB interface etc., is provided via the INTERFACE command.

The control unit includes a section 17th for the control and handling of the operating logic as well as for the control and handling of safety devices 40 using the instructions SECURITY +, SECURITY-.

QUOTES INCLUDE IN THE DESCRIPTION

This list of documents listed by the applicant has been generated automatically and is only included for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Patent literature cited

• EP 2883437 [0003]
• EP 2437131 [0003]

Claims (6)

Lawn mower equipped with at least one grass cutting knife moved by an electric motor (4) and with a traction device which has a further electric motor (3), the lawn mower having a single control unit (10) for controlling the electric motor associated with the at least one cutting knife and the further electric motor, characterized in that it has a container (8) for collecting grass and the only control unit has a section (15) for handling the container. Lawnmower after Claim 1 , characterized in that it has a housing (100) for the control unit. Lawnmower after Claim 2 , characterized in that the lawn mower is a ride-on lawn mower and that the housing is arranged under the seat (2) of the ride-on lawn mower. Lawnmower according to one of the preceding claims, characterized in that it has an actuator (9) for introducing the grass cut by the at least one cutting knife into the container (8), the actuator being moved by an electric motor and the control unit providing instructions ( ACTUATOR MOTOR +, ACTUATOR MOTOR-) for controlling the electric motor of the actuator. Lawnmower according to one of the preceding claims, characterized in that it includes sensors (21, 22) for the presence / absence of the container and for signaling a full container, the control unit containing signals (SWITCH GRASS BAG, SWITCH BAG FULL) designed to do so are to indicate the presence / absence of the container and a full container state, wherein the control unit is designed to activate an acoustic signal (SUMMER +, SUMMER-) in response to a nonexistent or full container. Lawnmower according to one of the preceding claims, characterized in that it has at least one user interface (30) and the control unit is designed for the handling and control of the at least one user interface (30).

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