SWITCHING DEVICE FOR SWITCHING AN ELECTRIC MOTOR

Abstract

A switching device for switching an electric motor, where the switching device is arranged on a component which is driven in rotation by the motor. The switching device is characterized in that a contactless, absolute position-measuring device, an evaluation unit for evaluating position signals and an output unit for outputting switching information for indirectly switching and/or directly switching the motor current as a function of a position signal are provided within a single housing.

Claims

1. A switching device for switching an electric motor, wherein the switching device is arranged on a component which is driven in rotation by the motor, the switching device comprising a contactless, absolute position-measuring device, an evaluation unit for evaluating position signals, and an output unit for outputting switching information for indirectly switching and/or directly switching the motor current as a function of a position signal, all provided within a single housing.

2. The switching device for switching an electric motor according to claim 1, wherein the position-measuring device is configured to sense a rotation of the component which is driven in rotation.

3. The switching device for switching an electric motor according to claim 1, wherein the position-measuring device is configured such that when an external power supply is switched off, the position-measuring device senses a position of the component absolutely.

4. The switching device for switching an electric motor according to claim 1, wherein the position-measuring device is configured to supply itself with power.

5. The switching device for switching an electric motor according to claim 1, wherein the switching device is configured to output a position of the component.

6. The switching device for switching an electric motor according to claim 1, wherein the switching device further comprises a sensing element and a fitter that determine a position of the component during installation of the switching device.

7. The switching device for switching an electric motor according to claim 3, wherein the power supply is conducted through the switching device.

8. The switching device for switching an electric motor according to claim 1, wherein the evaluation unit is configured such that, in one direction of rotation of the component, there are two signal outputs which are independent of one another.

9. A transmission having a switching device according to claim 1.

10. A motor having a switching device according to claim 1.

11. A geared motor having a switching device according to claim 1, wherein the motor has a transmission.

12. A drive system comprising a switching device according to claim 1, a geared motor and components driven by the geared motor.

13. The switching device for switching an electric motor according to claim 1, wherein the evaluation unit is configured to execute and evaluate a status monitoring process of a drive system comprising the switching device, a geared motor and components driven by the geared motor.

14. The switching device for switching an electric motor according to claim 6, wherein the position of the component is a limit position.

15. The switching device for switching an electric motor according to claim 8, wherein the evaluation unit is configured such that in each direction of rotation of the component there are two signal outputs which are independent of one another.

16. The switching device for switching an electric motor according to claim 13, wherein the drive system performs an action via the output unit.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0047] A plurality of exemplary embodiments are explained in more detail on the basis of the following schematic drawings, with an indication of further details and advantages:

[0048] FIGS. 1 to 3 show a view of a switching device according to the present invention which is arranged on a shaft, from different perspectives in each case;

[0049] FIG. 4 shows a perspective view of a drive system according to the invention;

[0050] FIG. 5 shows a perspective view of a further drive system; and

[0051] FIG. 6 shows a perspective view of a greenhouse with window elements which are driven by a drive system according to FIG. 4 or 5.

DETAILED DESCRIPTION OF THE INVENTION

[0052] A switching device 1 according to the invention comprises a position-measuring device 2, an evaluation unit 3, an output unit 4 and an energy store in the form of an accumulator 23. The switching device 1 is arranged on a shaft 5 and coupled by means of a gearwheel 6 of the position-measuring device 2 to a pinion 7 of the shaft 5 (FIGS. 1 to 3).

[0053] The position-measuring device 2, the evaluation unit 3 and the output unit 4 are arranged on a circuit board 8. The circuit board 8 can also be composed of a plurality of circuit board components (not shown) which are connected to one another in an electrically-conducting fashion.

[0054] A sensing element 25, by means of which a fitter of the switching device 1 can teach a position, in particular, a limit position of the shaft 5, during installation of the switching device 1 is present on an upper side 24 of the switching device 1.

[0055] Furthermore, the switching device 1 is, for example, embodied in a compact fashion such that it can be arranged in a housing of the motor and/or of the transmission.

[0056] A drive system 10 according to the present invention comprises the electric motor 9, a transmission housing 12 in which a transmission is embodied, by means of which a shaft 13 can be moved by the electric motor 9. In the transmission housing 12 of the drive system 10 there is also a switching device 1 arranged on the shaft 13. The shaft 13 drives, for example, a toothed rack 14 (FIG. 4).

[0057] A further drive system 11 also comprises the electric motor 9, a further transmission housing 15 in which a transmission is embodied, by means of which a further shaft 16 can be moved by the electric motor 9. In the embodiment of the drive system 11 the switching device 1 is present in a device housing 17, separate from the transmission housing 15, on the shaft 16 (FIG. 5).

[0058] The device housing 17 can, for example, also directly adjoin in an abutting fashion a housing side 18 of the transmission housing 15. The device housing 17 can, for example, be mechanically connected, for example screwed or riveted, to the transmission housing 15.

[0059] The drive system 10, 11 is installed, for example, in a greenhouse 19, in order to move, for example open or close, window elements 20 to 22.

LIST OF REFERENCE NUMERALS

[0060] 1 Switching device

[0061] 2 Positioning-measuring device

[0062] 3 Evaluation unit

[0063] 4 Output unit

[0064] 5 Shaft

[0065] 6 Gearwheel

[0066] 7 Pinion

[0067] 8 Circuit board

[0068] 9 Motor

[0069] 10-11 Drive system

[0070] 12 Transmission housing

[0071] 13, 16 Shaft

[0072] 14 Toothed rack

[0073] 15 Transmission housing

[0074] 17 Device housing

[0075] 18 Housing side

[0076] 19 Greenhouse

[0077] 20 to 22 Window element

[0078] 23 Accumulator

[0079] 24 Upper side

[0080] 25 Sensing element