CN215267985U

CN215267985U - Electric actuator and electronic modular system

Info

Publication number: CN215267985U
Application number: CN202021947358.2U
Authority: CN
Inventors: R·莫朗; A·萨考茨基; R·阿兴格尔
Original assignee: Auma Riester GmbH and Co KG
Current assignee: Auma Riester GmbH and Co KG
Priority date: 2019-09-09
Filing date: 2020-09-08
Publication date: 2021-12-21
Anticipated expiration: 2030-09-08
Also published as: DE102019124151A1

Abstract

The present invention relates to an electric actuator having an electronic assembly for controlling an actuator, comprising a circuit board, wherein the circuit board is arranged in a housing of the actuator by means of a support, wherein the circuit board has at least one switch for manual input of a control signal, and wherein the support is constructed with at least one actuating element for actuating the at least one switch. The invention also relates to an electronic modular system for a series of actuators, comprising an electronic assembly for controlling the respective actuator. Due to the separate actuating element, the circuit board itself does not have to have large accessible switches or actuating elements. The input for programming the control electronics can be made in a simplified manner by means of the actuating element. In this case, the circuit board itself can be kept as small as possible. Thereby achieving easy assembly and disassembly of the circuit board.

Description

Electric actuator and electronic modular system

Technical Field

The utility model relates to an electric actuator, electric actuator has the electronic structure sub-assembly that is used for controlling actuator, the electronic structure sub-assembly includes the circuit board.

The utility model discloses still relate to an electric actuator, this electric actuator has the electronic structure sub-assembly that is used for controlling the actuator, the electronic structure sub-assembly includes basic circuit board and circuit board, and wherein, actuator's casing provides the electricity ground connection in the inboard, the electricity ground connection connects the ground connection electricity with basic circuit board to be connected.

The present invention also relates to an electronic modular system for a series of actuators, comprising an electronic assembly for controlling a respective actuator of said series of actuators.

The invention also relates to an actuator comprising a direct current Motor, in particular a brushless direct current Motor (BLDC-Motor), as an electric drive and a temperature sensor for detecting the temperature in the interior space defined by the housing of the actuator.

Background

Actuators are known from many fields of application. They are used, for example, in large plants, such as refineries. In this case, the actuators are subjected to high loads and must be regularly checked and, if necessary, replaced. The known actuators have a number of disadvantages here. For example, known actuators have proven to be complicated to operate and set. In addition to this, the preassembly and final assembly are complex and costly. In addition, known actuators are often not able to adapt to new conditions. In addition, if the actuator is used in a safety-related device, the actuator must work reliably even in extreme weather conditions.

Disclosure of Invention

The task of the invention is to alleviate at least these disadvantages.

According to the invention, an electric actuator of the type mentioned at the outset is provided, having an electronic assembly for controlling the actuator, which electronic assembly comprises a circuit board, wherein the circuit board is arranged inside a housing of the actuator by means of a carrier, wherein the circuit board has at least one switch for manual input of a control signal, and wherein the carrier is designed with at least one actuating element for actuating the at least one switch.

Due to the separate actuating element, the circuit board itself does not have to have large accessible switches or actuating elements. The input for programming the control electronics can be made in a simplified manner by means of the actuating element. In this case, the circuit board itself can be kept as small as possible. Thereby achieving easy assembly and disassembly of the circuit board. The circuit board may thus be easily replaceable, if necessary. The size of the operating element can be adapted to the respective operating environment. For example, the actuating element can be so large that it can be operated with a glove. Thereby improving user-friendliness.

In particular, the carrier injection molded part, in particular the actuating element and the carrier, is formed in one piece by injection molding. Thereby simplifying manufacture and enabling low costs.

In particular, the switch is designed as a microswitch and/or the actuating element is designed as a pushbutton.

In one embodiment of the invention, the actuating element is elastic and/or can be manually adjusted against a restoring force which releases the corresponding actuating element from contact with the associated switch. The actuating element may have an inherent elasticity. The inherent elasticity assumes the reset function in the operation of the switch. This makes it possible to dispense with a reset element on the circuit board. The actuating element can be designed for manipulation with the glove, i.e. the actuating element can be correspondingly large.

In one embodiment of the invention, the circuit board can be inserted, in particular can be inserted, into the carrier along a push-in direction, wherein the actuating element can be actuated transversely to the push-in direction. In particular, the switch can be moved transversely to the push-in direction. The switches on the circuit board can thus be arranged on the face of the circuit board. Mechanical components that allow operation from the circuit board end side can therefore be dispensed with.

In one embodiment of the invention, the actuating element is arranged at least partially inside the housing. By being arranged in the housing interior, the operating element is protected from dirt and accidental operation. This contributes to further increase of the operational safety.

In one embodiment of the invention, the housing is designed with an electronics compartment which is closed or semi-open on one side and into which the electronic assembly is inserted, wherein preferably the actuating element protrudes from the electronics compartment when the housing is open when the printed circuit board is inserted into the assembly. In particular, the switch is located in an inaccessible area of the electronics space. The switch is protected from damage and contamination by the housing and the actuating element. Furthermore, the switch can only be operated via the actuating element. Since the actuating element can be large, protection against incorrect operation can be increased.

In one embodiment of the invention, at least a part of the electronic assembly can be inserted into the electronics compartment in the installation direction, and the insertion direction of the circuit board extends opposite or transversely to the installation direction. In particular, a rear opening is formed in the housing, through which the circuit board can be inserted into the electronics compartment in the insertion direction. This enables the circuit boards to be removed and inserted from both sides. This helps to simplify assembly.

In one embodiment of the invention, the circuit board has a connection terminal for supplying a voltage, and the actuating element covers the connection terminal. The short-circuiting of the connecting terminals is prevented by the actuating element. This is particularly significant in applications where there is a risk of explosion (e.g. oil pipelines) and therefore spark generation must be avoided in any event.

In one embodiment of the invention, the housing is formed on the inside with a receptacle for the rotationally fixed reception of the support, and/or in the immediate vicinity of the actuating element, a corresponding operating marking is formed on the inside of the housing. By means of the anti-rotation receptacle, the support cannot slip and can be prevented from moving in the housing. The introduction of the holder can be coded by the receptacle, which increases the assembly safety. The marks mounted on the housing can improve user-friendliness and reduce the risk of incorrect operation.

In one embodiment of the invention, the carrier, in particular the actuating element, is designed with a defined stop for the insertion of the circuit board in the insertion direction. The support, in particular the actuating element, covers or covers the printed circuit board at the end. Preferably, further switches for operating the circuit board on the end side, in particular the openings of jumpers or slide switches, can be formed on the carrier. The limiting stop formed by the holder for limiting the insertion of the circuit board facilitates the assembly and alignment of the circuit board in the housing. The circuit board may be guided and fixed into the assembly position by the bracket. The insertion of the circuit board can be coded by the support. The opening allows access to further operating or wiring elements without further assembly steps.

In one embodiment of the invention, the actuating element is not accessible from the outside with the housing closed, and the actuator can be moved by actuating the actuating element. The end position of the actuating path of the actuator can be set, for example, when the housing is open when the actuator is put into operation. Thus, only one housing part has to be removed for setting up or readjusting the execution path. No further disassembly of the actuator is required.

According to a second aspect of the invention, an electric actuator of the type mentioned at the beginning is provided, having an electronic assembly for controlling the actuator, which electronic assembly comprises a base circuit board and a circuit board; the housing of the actuator provides on the inside an electrical ground connection which is electrically connected to a ground connection of the base circuit board, wherein the circuit board is mechanically connected to the base circuit board by means of a plug connection and the ground line of the circuit board is electrically connected to the ground connection of the base circuit board by means of the plug connection. The circuit board preferably does not have its own ground connection cable, so that the electronic components of the circuit board are electrically grounded via the ground contacts of the base circuit board. Thereby providing a ground via the ground connector of the base circuit board. A separate grounding element may be dispensed with. This further simplifies assembly.

It is particularly advantageous that the second aspect is combined with the above-mentioned aspects.

In a second aspect of the invention, the circuit board has an electrical shielding device, which is electrically connected to the ground terminal of the housing via the plug connection. The electrical shielding may provide a control component that can be secured to the circuit board to prevent electromagnetic fields.

In a second aspect of the invention, the housing is designed with an electronics housing which is closed or semi-open on one side, wherein at least a part of the electronic assembly can be inserted into the electronics housing in the mounting direction, and wherein the surface normal of the base circuit board is oriented in the direction of the mounting direction and the surface normal of the circuit board is oriented transversely to the mounting direction. The base circuit board is therefore provided with further plug-in points for further circuit boards, which can then be inserted into the base circuit board from "above", i.e. with the housing open. In particular, the circuit board can be inserted into the plug connector in the mounting direction.

In the second aspect of the present invention, the electrical connection between the ground connection of the base circuit board and the ground connection of the housing is established by means of a threaded connection, and an unloading channel is formed in the electronic device space, in which unloading channel the screw of the threaded connection can be unloaded in a tilt-proof manner. The screw can then be tightened by means of a tool which engages in a tool receptacle on the end face of the screw. In this way, it is possible to easily reach hard-to-access screwing positions from above, in particular when the length of a tool, for example an allen wrench, is designed for the unloading channel.

In particular, a ground cable is or can be connected to the screw and is or can be electrically connected to a ground line of a circuit board of the electronic assembly.

In particular, the plug connector and/or the further plug connector realize an electronic bus interface, wherein the base circuit board is in electronic communication with the circuit board via the plug connector and/or with the further circuit board via the further plug connector. Thereby, via the bus interface, control and regulation signals can be transferred to the circuit board and/or to a further circuit board.

In a second aspect of the invention, the base circuit board has a circular outer contour, wherein the circuit board and/or the further circuit board respectively do not exceed a base plane of 120mm × 75 mm. The base circuit board is adapted at least partially to the housing with a circular contour and makes good use of construction space. A base area of 120mm x 75mm is preferred in order to keep the overall dimensions of the housing small, since the simplified explosion protection rules can be used with smaller dimensions.

According to a third aspect of the invention, an electronic modular system of the type mentioned at the beginning is provided, comprising: an electronic structural assembly for controlling a respective actuator of the series of actuators; the electronic assembly comprises a base circuit board, which controls the drive motor of the respective actuator and/or supplies an operating voltage for the drive motor, and a plurality of optional circuit boards, which implement additional electronic functions, such as wireless communication or safety functions, wherein the optional circuit boards can each be electrically connected to the base circuit board in a modular manner by means of plug connectors. It can be seen from this aspect of the invention that an easy adaptation of the actuator to various tasks or different use scenarios can be achieved by the possibility of inserting a circuit board with modular functions (for example for controlling/adjusting the actuator and/or for adapting the control electronics to different control and adjustment characteristics). For example, the upgrade can be achieved by inserting a new circuit board. The actuator can be designed according to any of the preceding aspects of the invention, which is constructed according to a modular, modular system. Thus, even within a single actuator series, the series of actuators can be implemented with a different range of electronic functions. The actuator can thus be used for very different purposes. However, the construction costs remain the same. At the same time, costs are saved by standardizing the components. Furthermore, each actuator in the series can be operated in a basic function using the basic circuit board, without the optional circuit board being dispensed with.

It is particularly advantageous if the third aspect is combined with one or more of the previously described aspects.

In a further development of the third aspect, the modular system comprises a further base circuit board having a rectifier for voltage conversion, in particular a rectifier for converting an alternating voltage into a direct voltage, wherein the base circuit board is in electronic and/or electrical communication with the further base circuit board. The further base circuit board may be used to ensure basic functionality.

In a further development of the invention, the modular system comprises a circuit board for setting the respective actuator of the series of actuators, wherein the circuit board has an electrical switch which is arranged in the interior of a housing of the actuator in the installed state, wherein the basic function of the respective actuator of the series of actuators can be set by means of the switch when the housing is open. In particular, when the actuator is put into operation, the basic function can be set in this way.

According to a fourth aspect of the invention, an actuator of the type mentioned in the opening paragraph is provided, which actuator comprises: a direct current motor as an electric drive and a temperature sensor for detecting a temperature in an interior space, which is delimited by a housing of an actuator, wherein the actuator has at least one loss resistor that can be switched on electronically, and wherein an electronics unit of the actuator is designed to switch on the loss resistor electronically when at least one of the following conditions is fulfilled: the intermediate circuit voltage for operating the brushless dc motor exceeds a threshold value or the temperature sensor detects a fall below a temperature limit. When the actuator is moved passively, rotational energy is transferred to the actuator. The rotational energy may be converted into electrical energy by a dc motor, which may have a generator-type operation. If the electrical energy is converted into thermal energy via a loss resistor, the electrical energy can be used in connection with this for heating the housing interior. Alternatively, the intermediate circuit voltage of the brushless dc motor can also be regulated via a loss resistor if the intermediate circuit voltage exceeds a threshold value. Thus, the actuator can also be used in very cold temperature situations or have a regulation which ensures that its components can be operated. Thereby improving reliability.

It is particularly advantageous if the fourth aspect is combined with one or more of the preceding aspects.

In particular, a loss resistor is arranged in the interior space, so that not only the loss heat but also the residual heat can be used to heat the interior space, and/or wherein the electronics unit is designed to use the loss resistor as both a heating resistor and a braking resistor of the electronic brake chopper.

In particular, when the brushless dc motor, which is driven by an external load torque, is in generator mode, in particular during a braking process, the electronics unit switches on a loss resistor in order to convert the electrical energy generated in the brushless dc motor into loss heat. Alternatively, the electronics unit switches on the loss resistor below a temperature limit in order to heat the interior space by means of the waste heat generated in the loss resistor.

In a further development of the fourth aspect of the invention, the electronic unit is controlled in such a way that, when the threshold value is exceeded, a generator voltage generated by the brushless dc motor in generator mode operation is applied to the loss resistor, and, if the temperature limit is undershot, the generator voltage or an operating voltage provided by the actuator is applied to the loss resistor. A further alternative for heating by absorbing rotational energy is to convert the operating voltage at the loss resistance to heat below a temperature limit, so that "active" heating is also possible if no external rotational energy is provided for conversion to heat via the electric machine. In particular, if the electronics unit switches the loss resistor on electronically, a loss current can flow through the loss resistor, wherein the loss current generates loss heat or waste heat.

In a further development of the fourth aspect of the invention, the actuator comprises a frequency converter which feeds an intermediate circuit voltage for operating the brushless dc motor, wherein the electronics unit implements a brake chopper in generator operation by switching on a loss resistor, which brake chopper defines the intermediate circuit voltage in generator operation by converting electrical energy into thermal energy, and wherein the electronics unit electronically disconnects the loss resistor from the intermediate circuit voltage as soon as the intermediate circuit voltage is below a threshold value, wherein the threshold value is the operating voltage of the intermediate circuit voltage.

In a further development of the fourth aspect of the invention, the electronic unit is designed to connect the loss resistor to the line voltage provided by the actuator in the event of a temperature drop below a temperature limit, unless an intermediate circuit voltage is already applied to the loss resistor. This enables a selection between the operating voltage and the intermediate circuit voltage. This can lead to energy savings, since once the intermediate circuit voltage is present, it can be used for heating.

In a fourth aspect of the present invention, the loss resistor is provided in the brake chopper unit. The brake chopper unit can be arranged as a separate component outside the direct current motor and in the interior space. In particular, the brake chopper unit can also be arranged on one of the circuit boards.

Drawings

Exemplary embodiments of the invention are described in more detail below with the aid of the figures.

In the drawings:

fig. 1 shows a portion of an exemplary actuator according to the present invention;

fig. 2 shows an enlarged view of a part of the actuator according to fig. 1 in a plan view;

FIG. 3 illustrates an exemplary housing with an exemplary bracket in a top view;

fig. 4 shows a perspective view of an exemplary electronic structural assembly in accordance with the present invention;

FIG. 5 shows the electronic structural assembly according to FIG. 4 in an exemplary housing;

fig. 6 shows a schematic view of an exemplary housing of an actuator according to the present invention;

fig. 7 shows an exemplary circuit board pushed into the housing of the actuator according to the invention;

fig. 8 shows another exemplary illustration of the present invention;

fig. 9 shows another exemplary illustration of the present invention;

fig. 10 shows another exemplary illustration of the present invention;

fig. 11 illustrates an exemplary equivalent circuit diagram of an aspect of the present invention;

fig. 12 illustrates an exemplary flow diagram of an aspect of the present invention; and is

Fig. 13 shows the grounding concept according to the invention in the actuator according to fig. 1.

Detailed Description

Fig. 1 shows a part of an exemplary actuator 1 according to the invention. The actuator 1 comprises an electronics assembly 2 for controlling the actuator 1, which electronics assembly has a circuit board 3. The electronic assembly 2 is arranged in a holder 4 and is held by the holder. By means of the holder 4, the electronic assembly 2 can be pushed into a housing (not shown) of the actuator 1 and held therein. The circuit board 3 has a plurality of switches 5. The switch 5 is covered by the actuating element 6 and is contacted by the actuating element, so that the switch 5 is switchable by the actuating element. The actuating element 6 is designed as part of a frame. The actuating element 6 is formed in one piece with the carrier 4, in one piece, in particular as an injection-molded part.

Fig. 2 shows an enlarged view of a part of the actuator 1. The switch 5 is arranged on the circuit board 3 and is designed as a micro-button. The micro-button has a projection 7, which establishes a mechanical pressure connection with the actuating element 6, so that the switch 5 can be pressed by the actuating element 6. The switch 5 is arranged on the surface of the circuit board 3 and is directed towards the housing (not shown). The actuating element 6 is designed as a spring button. On the support 4, a marking 8 is provided, which indicates the function of the corresponding key.

Fig. 3 shows a top view of an exemplary housing 9 of the actuator 1. The holder 4 is pushed into and secured against relative rotation in the housing 9. The housing 9 is formed on its inner wall with a receptacle for the holder 4. The circuit board 3 is arranged in the housing 9 in the insertion direction along the housing longitudinal axis. The switch 5 is contacted by the actuating element 6 and can be moved transversely to the insertion direction. The housing 9 provides a ground connector 13 that can be connected with a push-in electronics configuration assembly.

Fig. 4 shows a perspective view of the electronic assembly 2. The electronic structure assembly 2 comprises a circuit board 3 and a (first) basic circuit board 10 and a further (second) basic circuit board 11. The circuit board 3 is connected to the base circuit board 10 by means of a plug connector 12. The further base circuit board 11 is likewise connected to the (first) base circuit board 10 by means of a plug connector 12. The base circuit board 10 likewise has a ground terminal 13a which is designed to be complementary to the ground terminal 13 of the housing and can be connected thereto. The ground connector 13a of the base circuit board 10 is connected or connectable to the circuit board 3 by means of the plug connector 12. The circuit board 3 has an electrical shielding which is connectable via a ground connection 13a of the base circuit board 10 with a ground connection 13 of the housing 9. A further plug connection 12 is provided between the circuit board 3 and the further base circuit board 11 for receiving a further circuit board (not shown) in the base circuit board 10.

Fig. 5 shows the electronic assembly 2 according to fig. 4 in an exemplary housing 9. The housing forms an electronic device space that is closed on one side. In this illustration, the housing 9 is open, i.e. the housing upper parts belonging to the housing 9 are not shown. The electronic assembly 2 and the carrier 4 are arranged at least partially in the housing 9. The actuating element 6 protrudes from the housing 9 or from the semi-open electronic subassembly 2 and is thus operable. With the housing 9 closed, the actuating element 6 is not operable. The switch 5 on the circuit board 3 is, however, covered by the actuating element 6 and is therefore arranged in an inaccessible part of the electronics space. The electronic assembly comprises, in addition to the circuit board 3, the base circuit board 10 and the further base circuit board 11, a further circuit board 20. The further circuit board 20 is optional and is connected to the base circuit board 10 by means of a plug connection 12. The base circuit board 10 also has a plurality of plug-in positions for optional further circuit boards 20.

Fig. 8 shows a schematic view of an exemplary housing 9 of the actuator 1. The housing 9 comprises an upper part 14, an intermediate part 15 and a lower part 16. The upper part 14 can be attached to the intermediate part 15 and can be connected thereto and can accommodate the electronic assembly 2. There is a misalignment between the intermediate part 15 and the lower part, whereby the intermediate part 15 is also at least partially accessible from below.

Fig. 7 shows an exemplary circuit board 3, which is pushed into the housing 9 of the actuator 1. The housing 9 has a backside opening 17. The circuit board 3 is pushed into the housing 9 through the rear opening 17. As can be seen in fig. 8, the housing 9 has an offset between the intermediate part 15 and the lower part 16. The rear-side opening 17 is arranged in the region of the offset, so that it is accessible from the underside of the intermediate part 15. The carrier 4, in particular the actuating element 6, forms an upper limit stop, by which the insertion movement of the printed circuit board 3 is limited.

Fig. 6 shows a further exemplary illustration of the invention. The circuit board 3 is pushed into the housing 9, the actuating element 6 forming an upper limit stop. The printed circuit board 3 has connection terminals 18, which can be used, for example, for supplying voltage. The terminal is covered by the actuating element 6, but is accessible via an opening 19 at the end. Further switches, in particular jumpers or slide switches (not shown), on the circuit board 3 can also be operated by means of the openings 19.

Fig. 9 shows the electronic assembly 2 connected to the support 4. A further circuit board 20 is introduced into the carrier 4 from above and connected to the base circuit board 10. For safety, the further circuit board 20 is held on the support 4 by means of a clamp 21. In order to introduce screws onto the (not shown) ground connection 13a of the base circuit board 10, the electronics configuration assembly comprises an unloading channel 22. The screws can be supplied to the ground connection 13a through the relief channel in a tilt-proof manner and can be tightened with a sufficiently long tool.

Fig. 10 shows the electronic subassembly 2 from fig. 9 connected to the support 4, wherein the electronic subassembly is inserted into the housing 9 of the electric actuator 1 and comprises the electric motor 23. The electronic structure assembly includes a temperature sensor (not shown).

Fig. 11 illustrates an exemplary equivalent circuit diagram of an aspect of the present invention. The actuator has an electrical loss resistor R19 that can be switched on, wherein the electronics unit 24 of the actuator 1 is designed to switch on the loss resistor if the intermediate circuit voltage for operating the electric machine exceeds a threshold value or if a temperature sensor detects a temperature drop below a temperature limit. The electronics unit 24 is also designed to use the loss resistor R19 as both a heating resistor for heating the interior of the housing 9 and as a braking resistor for the electronic brake chopper 25. If the temperature limit is undershot, the electronics unit 24 applies the operating voltage provided by the actuator to the loss resistor R19.

Fig. 12 shows an exemplary flowchart of a heating process in the actuator 1 according to the invention, wherein the heating process is controlled by the electronics unit 24. The electronics unit 24 includes two modules. The High Level Module (HLM)26 creates a heating requirement. A heating process is initiated in response to the heating demand. The heating process can be carried out by connecting a loss resistor to the operating voltage, by generator-type operation of the electric machine due to external torque, or by brake chopper-type operation. In order to determine which type of operation should be used, a Low Level Module (LLM)27 determines whether the motor is in generator mode operation, which is responsible for motor control and receives heating requirements. If the electric machine is in generator mode, the loss resistor is switched on and the generator power is converted into heat energy. Generator operation is present when an external load torque is applied and during braking (brake chopper operation). However, if the motor is in brake-chopper operation, the heating requirements will be rewritten by the LLM, since heating will occur anyway. If an external load torque is applied, the heating requirement is met and the loss resistance is likewise switched on. If generator mode operation is not present, the LLM27 communicates it to the HLM26 via the CAN bus. After that, HLM26 determines whether the heating request is responded to through a connection of a loss resistance to the operating voltage. Here, HLM26 may also access temperature values from temperature sensors and determine whether to further maintain the heating requirements.

Fig. 13 shows an electric actuator generally indicated at 1.

The actuator 1 can be constructed, for example, as described with respect to fig. 9.

The actuator 1 has an electronic assembly 2 for controlling the actuator 1.

The electronic assembly 2 has a base circuit board 10 and at least one further circuit board 3.

The base circuit board 10 provides the electronic basic functions of accessing the functions of the further circuit board 3.

The electronic assembly 2 is arranged in a housing 9, which has a lower part 16, an intermediate part 15 and an upper part 14. The lower part 16 is electrically connected to the intermediate part 15 via a threaded connection 29. The upper part 14 is electrically connected with the intermediate part 15 via threads 28 (see also fig. 8).

The housing 9 provides an electrical ground terminal 13 on the inside, which is electrically connected with a ground terminal 13a of the base circuit board 10.

The circuit board 3 is mechanically connected to the base circuit board 10 by means of a plug connector 12, wherein the ground line 30 of the circuit board 3 is electrically connected to the ground terminal 13a of the base circuit board 10 by means of the plug connector 12.

The circuit board 3 has an electrical shielding 31, which is electrically connected to the ground terminal 13 via the plug connection 12.

The housing 9 forms an electronics space 32 which is closed or semi-open on one side. At least a part of the electronic assembly 2 can be inserted into the electronics compartment 32 in the installation direction 33 (see also fig. 8).

Here, the surface normal of the base circuit board 10 is oriented in the direction of the mounting direction 33, while the surface normal of the circuit board 3 is oriented transversely to the mounting direction 33.

The electrical connection between the ground connector 13a of the base circuit board 10 and the ground connector 13 is established by means of the threaded connector 34.

In the electronics space, a discharge channel 22 (see fig. 7) is formed, into which the screw of the threaded connection 34 can be discharged in a tilting-proof manner.

A ground cable is connected to the screw, said ground cable being electrically connected or electrically connectable to a ground line of the circuit board 3 of the electronics component assembly 2.

The plug connector 12 of one of the circuit boards 3 implements an electronic bus interface, wherein the base circuit board 10 is in electronic communication with the circuit board 3 via the plug connector 12 and with the further circuit board 20 via the further plug connector 12.

The base circuit board 10 has a circular outer contour which is matched to the shape of the intermediate part 15.

List of reference numerals

1 actuator

2 electronic structure assembly

3 Circuit board

4 support

5 switch

6 operating element

7 projection

8 sign

9 casing

10 basic circuit board

11 additional base circuit board

12 plug connector

13 ground joint

13a ground connector

14 upper part

15 intermediate part

16 lower part

17 backside opening

18 terminal block

19 additional openings

20 additional circuit boards

21 clamping apparatus

22 unloading channel

23 electric machine

24 electronic device unit

25 braking chopper

26 high level module

27 low level module

28 screw thread

29 screw connection

30 ground wire

31 shielding device

32 electronic device space

33 mounting direction

Claims

1. Electric actuator (1) having an electronic assembly (2) for controlling the electric actuator, said electronic assembly comprising a circuit board (3),

the circuit board (3) is arranged inside a shell (9) of the electric actuating mechanism (1) by means of a bracket (4);

the circuit board (3) has at least one switch (5) for manual input of a control signal; and is

The support (4) is designed with at least one actuating element (6) for actuating the at least one switch (5).

2. Electric actuator (1) according to claim 1, characterized in that the bracket (4) is an injection molded part.

3. The electric actuator (1) according to claim 2, characterised in that the actuating element (6) is constructed in one piece with the carrier (4) by injection moulding.

4. The electric actuator (1) according to any of claims 1 to 3, characterized in that the switch (5) is designed as a micro-button; and/or the actuating element (6) is designed as a pushbutton.

5. Electric actuator (1) according to any of claims 1 to 3, characterized in that the operating element (6) is elastic; and/or the actuating element can be adjusted manually against a restoring force, which releases the respective actuating element (6) from contact with the associated switch (5).

6. Electric actuator (1) according to any of claims 1 to 3, characterized in that the circuit board can be introduced into the holder (4) in a push-in direction; and the actuating element (6) can be actuated transversely to the insertion direction.

7. Electric actuator (1) according to claim 6, characterized in that the circuit board can be inserted into a holder (4) in the push-in direction.

8. Electric actuator (1) according to claim 6, characterized in that the switch (5) is movable transversely to the push-in direction.

9. Electric actuator (1) according to one of claims 1 to 3, characterized in that the actuating element (6) is arranged at least partially inside the housing (9).

10. The electric actuator (1) according to one of claims 1 to 3, characterised in that the housing (9) is designed with an electronics compartment which is closed or semi-open on one side and into which the electronic subassembly (2) is inserted.

11. Electric actuator (1) according to claim 10, characterized in that the operating element (6) protrudes from the electronics compartment when the housing (9) is open when the circuit board (3) is inserted into the holder (4).

12. Electric actuator (1) according to claim 10, characterized in that the switch (5) is located in an inaccessible area of the electronics space.

13. Electric actuator (1) according to claim 10,

at least a part of the electronic assembly (2) can be inserted into the electronic device space in the installation direction; and is

The insertion direction of the printed circuit board (3) extends opposite or transversely to the installation direction.

14. The electric actuator (1) according to claim 13, characterised in that a rear opening (17) is formed in the housing (9), through which the circuit board (3) can be introduced into the electronics space in the insertion direction.

15. The electric actuator (1) according to any of claims 1 to 3, characterised in that the circuit board (3) has connection terminals (18) for supplying a voltage; and the actuating element (6) covers the connecting terminal (18).

16. Electric actuator (1) according to one of claims 1 to 3, characterized in that the housing is configured on the inside with a receptacle for the rotation-proof reception of a bracket (4); and/or in the immediate vicinity of the actuating element (6), a corresponding operating marking is formed on the inner side of the housing (9).

17. The electric actuator (1) according to any of claims 1 to 3, characterized in that the bracket (4) is configured with a defined stop for introducing the circuit board (3) in the push-in direction; and/or the carrier (4) covers the printed circuit board (3) at the end face.

18. The electric actuator (1) according to claim 17, characterised in that the actuating element (6) is configured with a defined stop for introducing the circuit board (3) in the push-in direction; and/or the actuating element (6) covers the printed circuit board (3) at the end face.

19. The electric actuator (1) according to claim 17, characterised in that an opening (19) for actuating a further switch of the circuit board (3) on the end side is formed on the carrier (4).

20. Electric actuator (1) according to claim 19, characterized in that the further switch is in the form of a jumper or a slide switch.

21. Electric actuator (1) according to any of claims 1 to 3, characterized in that the actuating element (6) is not accessible from the outside with the housing (9) closed.

22. Electric actuator (1) according to claim 21, characterized in that the electric actuator (1) is movable by operating the operating element (6).

23. Electric actuator (1) according to any of claims 1 to 3, characterized in that the electronic structural assembly comprises a base circuit board (10);

the housing (9) of the electric actuator (1) is provided on the inside with an electrical ground connection (13) which is electrically connected to a ground connection (13a) of a base circuit board (10);

the circuit board (3) is mechanically connected to the base circuit board (10) by means of a plug connection (12); and is

The earth line of the circuit board (3) is electrically connected to the earth connection (13a) of the base circuit board (10) by means of a plug connection (12).

24. Electric actuator (1) according to claim 23, characterized in that the circuit board (3) has an electrical shielding which is electrically connected to the ground connection (13) of the housing (9) via a plug connection (12).

25. The electric actuator according to claim 23, characterized in that the housing (9) forms an electronics space which is closed or semi-open on one side and into which at least a part of the electronic subassembly (2) can be inserted in the installation direction; and the surface normal of the base circuit board (10) is oriented in the direction of the mounting direction, while the surface normal of the circuit board (3) is oriented transversely to the mounting direction.

26. Electric actuator (1) according to claim 23,

establishing an electrical connection between a ground connection (13a) of the base circuit board (10) and a ground connection (13) of the housing (9) by means of a threaded connection; and is

An unloading channel (22) is formed in the electronics space, into which unloading channel the screw of the screw connection can be unloaded in a tilting-proof manner.

27. Electric actuator (1) according to claim 26, characterized in that a ground cable is connected or connectable to the screw; and the grounding cable is electrically connected or can be electrically connected with the grounding wire of the circuit board (3) of the electronic structure assembly (2).

28. Electric actuator (1) according to claim 23,

the plug connector (12) and/or a further plug connector realize an electronic bus interface; and is

The base circuit board (10) is in electronic communication with the circuit board (3) via a plug connection (12) and/or with a further circuit board (20) via a further plug connection.

29. Electric actuator (1) according to claim 28,

the basic circuit board (10) has a circular outer contour; and/or

The circuit board (3) and/or the further circuit board (20) respectively do not exceed a base area of 120mm x 75 mm.

30. Electric actuator (1) according to any of claims 1 to 3, characterized in that it comprises:

a direct current motor (23) as an electric drive, and

a temperature sensor for detecting a temperature in an interior space, which is defined by a housing (9) of the electric actuator (1),

the electric actuator (1) has at least one electronically switchable loss resistor (R19);

the electronic unit (24) of the electric actuator (1) is designed to electronically switch on a loss resistor (R19) when at least one of the following conditions is fulfilled:

the intermediate circuit voltage used for operating the direct current motor (23) exceeds a threshold value,

the temperature sensor detects a temperature below a temperature limit.

31. The electric actuator (1) according to claim 30, characterized in that the direct current motor (23) is a brushless direct current motor.

32. Electric actuator (1) according to claim 30, characterized in that a loss resistance (R19) is provided in the interior space, so that the interior space can be heated not only using loss heat but also using waste heat; and/or

The electronic device unit (24) is designed such that the loss resistor (R19) serves both as a heating resistor and as a braking resistor for the electronic brake chopper (25).

33. Electric actuator (1) according to claim 31, characterized in that the electronics unit (24) switches on a loss resistor when the brushless dc motor is in generator mode, in order to convert the electrical energy generated in the brushless dc motor into loss heat or in order to heat the interior space below a temperature limit by means of residual heat generated in the loss resistor.

34. Electric actuator (1) according to claim 33, characterized in that the brushless dc motor is driven by an external load torque during a braking process.

35. Electric actuator (1) according to claim 31, characterized in that the electronics unit (24) is controlled such that

When the threshold value is exceeded, a generator voltage generated by the brushless DC motor in generator mode operation is applied to a loss resistor (R19); and is

When the temperature limit is undershot, the generator voltage or the operating voltage provided by the electric actuator (1) is applied to a loss resistor (R19).

36. Electric actuator (1) according to claim 31, characterized in that:

the electric actuator (1) comprises a frequency converter which feeds an intermediate circuit voltage for operating the brushless DC motor;

the electronics unit (24) implements a brake chopper (25) in generator mode by switching on a loss resistor (R19), said brake chopper defining an intermediate circuit voltage by converting electrical energy into thermal energy in generator mode;

the electronics unit (24) electronically disconnects the loss resistance from the intermediate circuit voltage as soon as the intermediate circuit voltage is below a threshold value, wherein the threshold value is the operating voltage of the intermediate circuit voltage.

37. Electric actuator (1) according to claim 30, characterized in that the electronics unit (24) is designed to electrically connect a loss resistor to the line voltage supplied by the electric actuator below a temperature limit, unless an intermediate circuit voltage has been applied to the loss resistor.

38. The electric actuator (1) according to claim 30, wherein the loss resistance (R19) is provided in a brake chopper unit.

39. Electronic modular system for a series of electric actuators (1), characterized in that it comprises:

an electronic assembly (2) for controlling a respective electric actuator (1) of the series of electric actuators; wherein the electronic assembly (2) comprises a base circuit board (10) which controls the drive motor of the respective electric actuator (1) and/or supplies an operating voltage for the drive motor; and

a plurality of further circuit boards (20) implementing additional electronic functions;

wherein the further circuit boards (20) are electrically connectable to the base circuit board (10) in a modular manner by means of plug connections (12) and the electric actuator is an electric actuator according to one of claims 1 to 29.

40. The modular system according to claim 39, characterized in that the additional electronic function is a wireless communication or security function.

41. The modular system according to claim 39 or 40, characterized in that it comprises a further base circuit board (11) having a rectifier for voltage conversion;

the base circuit board (10) is in electronic and/or electrical communication with the further base circuit board (11).

42. The modular system according to claim 41, wherein the rectifier is a rectifier that converts an alternating voltage to a direct voltage.

43. The modular system according to claim 39 or 40, characterized in that it comprises a circuit board (3) for setting up a respective electric actuator (1) of the series of electric actuators, which circuit board has an electric switch (5) which, in the installed condition, is arranged in the interior of a housing (9) of the electric actuator (1), the basic function of the respective electric actuator (1) of the series of electric actuators being settable by means of the switch (5) only in the open condition of the housing (9).