DE202020107143U1 - SMA actuator, carrier module therefor and actuation arrangement herewith - Google Patents

Abstract

SMA actuator comprising a carrier plate (2), a swivel body (9) held on the carrier plate (2) so as to be pivotable about a pivot point (10) between a first pivot end position and a second pivot end position with a first articulation point (10) provided at a distance from the pivot point (10). 11), a first bearing point (4) provided at a distance from the pivot point (10) and the first articulation point (11) and a first SMA wire (14), the first SMA wire (14) at the first bearing point (4) on the one hand and the first articulation point (11) on the other hand, and further comprising a control that interacts with the first SMA wire (14) for energizing the first SMA wire (14) as required.

Description

The invention relates to an SMA actuator comprising a first SMA wire and a control, which interacts with the first SMA wire, for energizing the first SMA wire as required. The invention also relates to a carrier module for the SMA actuator and an actuation arrangement with the SMA actuator.

For many years, conventional cooking appliances or convection ovens as well as tumble dryers and water-bearing household appliances have provided electromagnets or electric motors with and without gears as actuators for actuating valves, flaps or the like. Corresponding solutions are for example in the DE 10 2008 012 681 B4 , of the DE 10 2011 110 784 A1 , of the EP 1 293 596 B1 , of the EP 2 667 755 B1 , of the EP 2 777 471 B1 , of the U.S. 4,635,610 A and the US 10 119 708 B2 described. In addition, the CN 851 03 284 A a cooking appliance in which a flap is actuated for influencing an air flow by a shape memory alloy actuator (SMA actuator). The SMA actuator provides an SMA wire that can be energized as required and is heated by the energization. As a result of the heating, the length of the wire changes and an adjusting movement can be carried out.

The object of the present invention is to specify an improved SMA actuator, a carrier module for the SMA actuator and an actuation arrangement having the SMA actuator.

To achieve the object, the invention has the features of claims 1, 10 and 15. Advantageous further developments of the invention emerge from the subclaims, the following description and the exemplary embodiments of the invention shown in the figures.

A SMA actuator according to the invention provides a carrier plate, a pivot body held on the carrier plate so as to be pivotable about a pivot point between a first pivot end position and a second pivot end position with a first pivot point provided at a distance from the pivot point, a first bearing point provided at a distance from the pivot point and the first pivot point and an SMA wire which is held on the first bearing point on the one hand and on the first pivot point on the other hand. In addition, the SMA actuator includes an electrical control that interacts with the first SMA wire for the needs-based, optional energization of the first SMA wire. By energizing the SMA wire, the pivoting body can be pivoted about the pivot point and a pivoting movement can be provided.

According to a preferred embodiment of the invention, a second bearing point and a second articulation point are provided. The second articulation point is formed on the pivot body on a side opposite the first articulation point with respect to the pivot point. Furthermore, a first active element is provided which is variable in length and which is held on the second bearing point on the one hand and on the articulation point on the other hand. A return spring or a second SMA wire is provided as the first active element, for example, which is energized and changes its length as a result of the heating associated with the energization. The swivel body can then be pivoted in the opposite direction to actuation by the first SMA wire via the return spring or the second SMA wire.

According to a further development of the invention, a third bearing point and a third articulation point are provided, the third articulation point being spaced apart from the first articulation point, the second articulation point and the pivot point on the pivot body. In addition, a second active element that can be changed in length is provided, the second active element being held on the third bearing point on the one hand and the second articulation point on the other. A spring is preferably implemented as the second active element, which is pretensioned in tension and is stretched when the pivot body is moved from the first pivot end position into the second pivot end position and / or back and then relaxed again. The spring acts as a locking spring. It ensures that the first pivot end position and / or the second pivot end position are designed as stable preferred pivot positions in which the pivot body remains when the SMA wire or wires are not energized.

According to a further development of the invention, a locking contour is preferably provided on the shell side of the swivel body, which interacts with a locking spring. The locking contour on which the locking spring is applied is designed so that the locking spring is deformed or loaded when the pivoting body is pivoted from the first pivot end position into the second pivot end position and / or back. The locking contour and the locking spring ensure that the pivoting end positions are designed as preferred pivoting positions and the pivoting body is arranged in one of these preferred positions when the SMA wire or wires are not energized. For example, a leaf spring can serve as a locking spring.

The bearing point (s) are stationary or are provided at a distance from the swivel body. They are preferably formed on the carrier plate.

The carrier module according to the invention for the SMA actuator provides, as components essential to the invention, a carrier plate on which at least a first bearing point and a second bearing point and a pivot mount for the pivoting body pivotable about the pivot point are formed. A third bearing point is optionally provided on the carrier plate.

By providing the various bearing points on the carrier plate, these can advantageously be used in order to be able to build differently designed SMA actuators on the same, multifunctional carrier plate. In this respect, the carrier plate can be manufactured inexpensively in large numbers. The configuration is application-specific. The carrier module according to the invention with the same carrier plate always implements the modular concept and promotes the use of identical parts in the variant construction of differently configured SMA actuators according to the modular principle.

According to a further development of the invention, the first, the second and / or the third bearing point of the carrier plate are designed as pin receptacles. Depending on the configuration of the carrier module, a pin can be inserted into the pin receptacles, which is used to fasten the first SMA wire and / or the active elements. The provision of the pin receptacles advantageously supports the modular concept of the invention. The carrier module can be configured easily, individually and quickly depending on the actuator concept. Identical parts can be used as pins. In addition, a low overall height can be implemented for the pin receptacles themselves, with the result that the pin receptacles, which are not required for the respective actuator concept and do not accommodate a pin, cannot interfere with the actuation of the actuator or can be swiveled over.

According to a further development of the invention, the carrier plate can provide positioning elements. This advantageously promotes simple and precisely fitting assembly of the carrier plate or the carrier module in a housing.

According to a further development of the invention, spring receptacles for a locking spring can be provided on the carrier plate. For example, a leaf spring can be provided as a locking spring. The spring receptacles can then be designed in the shape of a groove for receiving the leaf spring at the end. The modular concept can advantageously be continued by providing the spring receptacles. The locking spring is only used in the spring receptacles of the carrier module that are always provided if the actuator concept provides for a locking spring.

An actuation arrangement according to the invention comprises an SMA actuator with at least one SMA wire, which interacts with a swivel body of the SMA actuator which is held pivotably about a pivot point. Furthermore, an actuation box is provided, which is used to accommodate the SMA actuator, as well as a cam assigned to the actuation box. The cam serves as a connecting element to an actuating unit which has an actuating element which is held pivotably and which is operatively connected to the cam. The cam serves to move the actuating element from a first pivot end position into a second pivot end position and back. In particular, the actuation arrangement provides an SMA actuator according to one of Claims 1 to 9 and / or a carrier module according to one of Claims 10 to 14.

The particular advantage of the invention is that, following the modular concept, different actuator concepts can be implemented as part of the actuation arrangement and consequently an individual adaptation of the actuation arrangement to the respective application is possible quickly, easily and inexpensively.

According to a further development of the invention, the pivoting end positions can be defined via stops, so that a defined pivoting range is established and the actuator is always exactly positioned in the pivoting end positions. The activation of the actuator is particularly simple in these cases. For example, the stop can interact with the swivel body and / or be implemented as part of the carrier module and preferably as part of the carrier plate.

The actuation arrangement according to the invention is used, for example, as a fresh air valve actuation arrangement in a convection machine or as a refrigerator flap actuation arrangement in a refrigerator with an ice or freezer compartment.

Further advantages, features and details of the invention can be gathered from the further subclaims and the following description. Features mentioned there can be essential to the invention either individually or in any combination. Features and details of the SMA actuator described according to the invention naturally also apply in connection with the carrier module and the actuation arrangement and vice versa. So can on the revelation to the individual aspects of the invention are always mutually referenced. The drawings serve only by way of example to clarify the invention and are not of a restrictive nature.

• 1 eine Prinzipdarstellung eines ersten Ausführungsbeispiels eines FGL-Aktuators in einer zweiten Schwenkendstellung,
• 2 die Prinzipdarstellung des FGL-Aktuators nach 1 in einer ersten Schwen kendstell u ng,
• 3 eine Prinzipdarstellung eines zweiten Ausführungsbeispiels des FGL-Aktuators in der zweiten Schwenkendstellung,
• 4 die Prinzipdarstellung des FGL-Aktuators nach 3 in der zweiten Schwenkendstellung,
• 5 die Prinzipdarstellung des FGL-Aktuators nach 3 in einer weiteren Schwenkstellung,
• 6 eine Prinzipdarstellung eines dritten Ausführungsbeispiels des FGL-Aktuators in der zweiten Schwenkendstellung,
• 7 die Prinzipdarstellung des FGL-Aktuators nach 6 in der ersten Schwenkendstellung,
• 8 eine Prinzipdarstellung eines vierten Ausführungsbeispiels des FGL-Aktuators in der zweiten Schwenkendstellung,
• 9 die Prinzipdarstellung des FGL-Aktuators nach 8 in der ersten Schwenkendstellung,
• 10 eine Prinzipdarstellung eines fünften Ausführungsbeispiels des FGL-Aktuators in der zweiten Schwenkendstellung,
• 11 die Prinzipdarstellung des FGL-Aktuators nach 10 in der ersten Schwenkendstellung,
• 12 eine perspektivische Darstellung einer Trägerplatte eines Trägermoduls für den FGL-Aktuator,
• 13 eine perspektivische Darstellung des Trägermoduls mit der Trägerplatte nach 12,
• 14 einen ersten Konfigurationszwischenschritt bei der Montage eines das Trägermodul verwendenden FGL-Aktuators in einer sechsten Ausführungsvariante,
• 15 einen zweiten Konfigurationszwischenschritt bei der Montage des FGL-Aktuators in der sechsten Ausführungsvariante,
• 16 eine perspektivische Darstellung der sechsten Ausführungsvariante des FGL-Aktuators mit dem Trägermodul nach 13,
• 17 eine Frontseitenansicht des FGL-Aktuators nach 16,
• 18 eine perspektivische Darstellung einer ersten Variante einer Betätigungsanordnung mit einem FGL-Aktuator in einer Betätigungsbox und mit einer mittels des FGL-Aktuators betätigten Klappe in einer Öffnungsstellung,
• 19 die Betätigungsanordnung nach 18 mit der Klappe in einer Schließstellung,
• 20 die Betätigungsanordnung nach 19, bei der der Blick in die Betätigungsbox und den darin vorgesehenen FGL-Aktuator freigegeben ist,
• 21 eine erste perspektivische Rückseitenansicht der Betätigungsbox in einer Alleindarstellung,
• 22 eine zweite perspektivische Rückseitenansicht der Betätigungsbox nach 21,
• 23 eine Seitenansicht der Betätigungsbox nach 21 und
• 24 eine perspektivische Darstellung einer zweiten Variante der Betätigungsanordnung mit dem FGL-Aktuator.

Show it:

• 1 a schematic representation of a first embodiment of an SMA actuator in a second pivot end position,
• 2 the schematic representation of the SMA actuator according to 1 in a first pivoting end position,
• 3 a schematic representation of a second embodiment of the SMA actuator in the second pivot end position,
• 4th the schematic representation of the SMA actuator according to 3 in the second pivot end position,
• 5 the schematic representation of the SMA actuator according to 3 in a further swivel position,
• 6th a schematic representation of a third embodiment of the SMA actuator in the second pivot end position,
• 7th the schematic representation of the SMA actuator according to 6th in the first swivel end position,
• 8th a schematic diagram of a fourth embodiment of the SMA actuator in the second pivot end position,
• 9 the schematic representation of the SMA actuator according to 8th in the first swivel end position,
• 10 a schematic representation of a fifth embodiment of the SMA actuator in the second pivot end position,
• 11 the schematic representation of the SMA actuator according to 10 in the first swivel end position,
• 12th a perspective view of a carrier plate of a carrier module for the SMA actuator,
• 13th a perspective view of the carrier module with the carrier plate according to 12th ,
• 14th a first intermediate configuration step in the assembly of an SMA actuator using the carrier module in a sixth variant,
• 15th a second intermediate configuration step in the assembly of the SMA actuator in the sixth variant,
• 16 a perspective view of the sixth variant of the SMA actuator with the carrier module according to 13th ,
• 17th a front view of the SMA actuator according to 16 ,
• 18th a perspective view of a first variant of an actuation arrangement with an SMA actuator in an actuation box and with a flap actuated by means of the SMA actuator in an open position,
• 19th the actuator assembly according to 18th with the flap in a closed position,
• 20th the actuator assembly according to 19th with which the view into the actuation box and the SMA actuator provided therein is enabled,
• 21 a first perspective rear view of the actuation box in a single representation,
• 22nd a second perspective rear view of the actuation box according to 21 ,
• 23 a side view of the actuation box according to 21 and
• 24 a perspective view of a second variant of the actuation arrangement with the SMA actuator.

The 1 and 2 show a first embodiment of an SMA actuator with a swivel body 9 , which can be spent from a first pivot end position into a second pivot end position. The SMA actuator sees a carrier module 1 before, at which a first storage point 4th and a second storage point 5 are provided. The swivel body 9 is around a fulcrum 10 pivotable on the carrier module 1 held. He looks on opposite sides of the fulcrum 10 a first point of articulation 11 and a second pivot point 12th in front.

The SMA actuator sees a first SMA wire 14th before, which has two ends on the SMA wire 14th provided connection elements 16 at the first storage point 4th on the one hand and at the first articulation point 11 on the swivel body 9 is formed, on the other hand is held. A restoring spring is also used as a first active element 17th provided, which at the second bearing point 5 and at the second pivot point 12th is held.

The first SMA wire is used to operate the SMA actuator 14th energized. The connection elements 16 as electrical contacts for the first SMA wire 14th to serve. The connection elements 16 in this respect have a double function: on the one hand, they serve to make electrical contact with the SMA wire 14th and on the other hand the fastening of the same to the first bearing point 4th and at the first articulation point 11 .

As a result of the energization of the first SMA wire 14th this heats up. The warming of the first SMA wire 14th leads to a contraction of the same with the consequence that an effective length of the SMA wire 14th is reduced. This causes the swivel body to rotate 9 approximately 90 ° clockwise and it will move out of the first pivot end position 2 into the second pivot end position 1 spent.

Provided that the first SMA wire is energized 14th ends and this cools down, becomes the swivel body 9 by the return spring 14th Swiveled back into the first pivot end position and the first SMA wire 14th resumes its original configuration. The first swivel position after 2 is designed as a preferred pivot position and the SMA actuator with one preferred pivot position is referred to as a monostable SMA actuator.

A second embodiment of the SMA actuator according to the 3 to 5 provides that the on the carrier module 1 held swivel body 9 with the first SMA wire 14th and a second SMA wire 15th cooperates. The first SMA wire 14th is as usual via connection elements 16 at the first storage point 4th and the first pivot point 11 held. The second SMA wire is analogous 15th instead of the return spring 17th between the second bearing point 5 and the second pivot point 12th installed. Here, too, the definition is made via connection elements 16 that are used for mechanical fastening as well as electrical contact.

By optionally using the first SMA wire 14th or the second SMA wire 15th The swivel body can be energized and heated 9 in the known way around the pivot point 10 from the first pivot end position according to 4th in the second pivot end position according to 3 and be taken back. In addition, the SMA wires can be supplied with current at the same time 14th , 15th further swivel positions are approached in which the swivel body 9 is positioned between the first pivot end position and the second pivot end position. The SMA actuator according to the second exemplary embodiment does not provide any preferred pivoting positions in the de-energized state. It is called a semi-stable SMA actuator.

The 6th and 7th show a third embodiment of the SMA actuator. Again, there are two SMA wires 14th , 15th between the two on the carrier module 1 formed bearing points 4th , 5 on the one hand and the articulation points 11 , 12th of the swivel body 9 on the other hand provided. The swivel body 9 also sees a locking contour on the jacket side 19th as an actuating gate, which with a locking spring 18th acting leaf spring cooperates. The locking spring 18th is about spring mounts 7th on the carrier module 1 set and the swivel body 9 with the locking contour 19th assigned so that when moving the swivel body 9 from the first pivot end position according to 7th in the second pivot end position according to 6th and / or back the locking spring 18th is deformed. The locking spring is in the illustrated pivoting end positions 18th on the other hand, undeformed or less deformed, with the result that the two pivot end positions are each designed as preferred pivot positions of the SMA actuator. The swivel body 9 will therefore remain in the first pivot end position or the second pivot end position if both SMA wires 14th , 15th are de-energized. The SMA actuator with the two preferred pivot positions is referred to as a bi-stable SMA actuator.

A fourth embodiment of the SMA actuator according to the 8th and 9 provides that the swivel body 9 that is around the fulcrum 10 pivotable on the carrier module 1 is set via two SMA wires 14th , 15th is pivoted. The SMA wires 14th , 15th are as usual via connection elements 16 at the bearing points 4th , 5 of the carrier module 1 and the pivot points 11 , 12th of the swivel body 9 held.

In addition, are on the carrier module 1 a third camp point 3 and on the swivel body 9 a third point of articulation 13th educated. The third point of articulation 13th is implemented here as a pin. Between the third camp point 3 and the third pivot point 13th is a tension spring as a locking spring 18th intended. The position of the third bearing point 3 on the carrier module 1 as well as the third articulation point 13th on the swivel body 9 is chosen so that the first pivot end position after 9 and the second pivot end position after 8th are designed as preferred pivot positions of the SMA actuator. In particular, are the third point of articulation 13th on the swivel body 9 between the first point of articulation 11 and the second pivot point 12th and the third bearing point 3 on the carrier module 1 between the first bearing point 4th and the second bearing point 5 intended. The swivel body 9 will therefore remain in the first pivot end position or the second pivot end position if both SMA wires 14th , 15th are de-energized. The SMA actuator according to the fourth exemplary embodiment is referred to as a bi-stable SMA actuator.

According to a fifth embodiment of the invention according to the 10 and 11 the SMA actuator sees the first SMA wire analogously to the first exemplary embodiment 14th as well as the return spring 17th in front. The first SMA wire 14th is between the first bearing point 4th and the first pivot point 11 held, whereas the return spring 17th between the second bearing point 5 and the second pivot point 12th is provided. Unless the SMA wire 14th is energized and warms up, the pivoted Swivel body 9 from the first pivot end position according to 11 in the second pivot end position according to 10 . The return spring 17th then serves to activate the swivel body when the power supply is interrupted 9 to spend back from the second pivot end position in the first pivot end position.

In the present fifth embodiment, the swivel body is also provided 9 to be locked in the first pivot end position and in the second pivot end position. For this purpose are on the swivel body 9 a first locking recess 23 and a second locking recess 24 intended. Furthermore, the SMA actuator sees a corresponding to the locking recesses 23 , 24 shaped locking lug 21 before, which has an elastically deformable guide 22nd is held displaceable. For moving the locking lug 21 is a second SMA wire 15th provided via connection elements 16 on the locking lug 21 on the one hand and the third bearing point 3 of the carrier module 1 on the other hand is held. Will be the second SMA wire 15th when energized, the effective length of the SMA wire is reduced 15th . The latch 21 is then disengaged and the lead 22nd elastically deformed. As a result, in the energized state of the second SMA wire 15th the swivel body 9 either from the first pivot end position into the second pivot end position or from the second pivot end position into the first pivot end position. This is done in a known manner by energizing the first SMA wire 14th or in the de-energized state of the SMA wire 14th by the one in the return spring 17th stored energy. When the swivel end position is reached, the second SMA wire is energized 15th finished and the locking lug 21 engages in the locking recess facing it 23 , 24 on. Due to the locking of the swivel body 9 in the pivoting end positions, the SMA actuator according to the fifth exemplary embodiment is also referred to as a bi-stable SMA actuator.

The different configurations of the SMA actuator can always be carried out using the same carrier module 1 to 13th can be configured. The carrier module 1 is constructed in such a way that the SMA actuators described above always use the same carrier module 1 use.

The carrier module 1 sees a carrier plate as an essential component 2 before, at which a shooting 6th for the swivel body 9 as well as the first storage point 4th , the second bearing point 5 and the third bearing point 3 are formed. In addition, the carrier plate sees 2 two opposing spring mounts 7th for the optional mounting of the locking springs 18th as well as positioning elements 33 in front. The positioning elements 33 serve to support the carrier plate 2 or the carrier module 1 to be installed in the exact position. In addition to the carrier plate 2 sees the carrier module 1 pencils 20th in front of which in the bearing points designed as pin receptacles 3 , 4th , 5 can be used. In particular, it can be provided that only the pins required for the respective actuator configuration 20th in the storage point 3 , 4th , 5 can be used.

14th shows a first intermediate configuration step in the assembly of the carrier module 1 using SMA actuator in a sixth variant. It is the swivel body here 9 with the first pivot point 11 , the second pivot point 12th and the tenon 13th as the third point of articulation in the rotary mount 6th used.

In a second intermediate configuration step according to 15th are also the first SMA wire 14th and the second SMA wire 15th assembled. The first SMA wire 14th is for this purpose via the connection elements 16 on the pen 20th of the first storage point 4th and the first pivot point 11 of the swivel body 9 attached. The second SMA wire 15th is on the pen 20th of the second bearing point 5 as well as the second pivot point 12th of the swivel body 9 set.

The 16 and 17th finally show the sixth variant of the SMA actuator in the fully configured form. So far it is the locking spring 18th additionally between the third articulation point (pin 13th ) as well as the pen 20th set in the third bearing point 3 is used.

According to an alternative, not shown embodiment, the carrier module 1 on separate pens 20th dispense. The camp point 3 , 4th , 5 can be shaped, for example, that the SMA wires 14th , 15th and / or the return or locking springs 17th , 18th can be attached directly there. For example, the bearing points 3 , 4th , 5 be shaped like a pin, hook or peg for this purpose.

A first variant of an actuation arrangement with an SMA actuator and an actuation box 28 and a flap operated by means of the SMA actuator 25th as an actuation unit is in the 18th and 19th shown. The flap 25th who have favourited a frame 26th and a hinged lid 27 is located in the illustration after 18th in an open position while in 19th is shown in the closed position.

20th shows a view of the SMA actuator in the actuation box 28 is installed. The flap 25th is in the closed position according to 19th . The SMA actuator, which functionally corresponds to the SMA actuator according to exemplary embodiments four and six, is located in FIG the second pivot end position designed as a preferred pivot position. It is via electrical connection conductor 31 contacted that to the actuation box 28 are led.

An enlarged view of the actuation box 28 show the 21 to 23 . The actuation box 28 sees the housing as the components that determine the geometry 29 as well as the cover 30th in front. The case 29 and the cover 30th are locked together with a snap lock. On the case 29 are locking lugs for this purpose 34 formed by an elastically deformable locking bracket 35 the cover 30th be engaged from behind in the illustrated closed position. There is also a cam 8th on a back of the case 29 to recognize. The cam 8th , which is in an operative connection to the swivel body 9 of the SMA actuator is provided, is used for the mechanical connection with the actuation unit (flap 25th ).

24 finally shows a second variant of the actuation arrangement with the SMA actuator in the actuation box 28 is provided. The electrical contact is made here via a connection contact 32 in the cover 30th the actuation box 28 . The actuation unit or flap 25th is implemented in the present embodiment as a fresh air valve of a convection machine.

The same components and component functions are identified by the same reference symbols.

List of reference symbols

1

Carrier module

2

Carrier plate

3

Bearing point

4th

Bearing point

5

Bearing point

6th

Rotation recording

7th

Spring mount

8th

cam

9

Swivel body

10

pivot point

11

Pivot point

12th

Pivot point

13th

Cones

14th

SMA wire

15th

SMA wire

16

Connection element

17th

Return spring

18th

Locking spring

19th

Locking contour

20th

pen

21

Locking lug

22nd

guide

23

Locking recess

24

Locking recess

25th

flap

26th

frame

27

cover

28

Actuation box

29

casing

30th

cover

31

Connection conductor

32

Connection contact

33

Positioning element

34

Locking nose

35

Locking bracket

QUOTES INCLUDED IN THE DESCRIPTION

This list of the documents listed by the applicant was generated automatically and is included solely 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

• DE 102008012681 B4 [0002]
• DE 102011110784 A1 [0002]
• EP 1293596 B1 [0002]
• EP 2667755 B1 [0002]
• EP 2777471 B1 [0002]
• US 4635610 A [0002]
• US 10119708 B2 [0002]
• CN 85103284 A [0002]

Claims (20)

SMA actuator comprising a carrier plate (2), a swivel body (9) held on the carrier plate (2) so as to be pivotable about a pivot point (10) between a first pivot end position and a second pivot end position with a first articulation point (10) provided at a distance from the pivot point (10). 11), a first bearing point (4) provided at a distance from the pivot point (10) and the first articulation point (11) and a first SMA wire (14), the first SMA wire (14) at the first bearing point (4) on the one hand and the first articulation point (11) on the other hand, and further comprising a control that interacts with the first SMA wire (14) for energizing the first SMA wire (14) as required. SMA actuator Claim 1 , characterized in that a second bearing point (5) and a second articulation point (12) are provided, the second articulation point (12) on an opposite side of the first articulation point (11) on the pivot body (9) in relation to the pivot point (10) ) is formed, and that a first active element variable in length is provided, the first active element being held on the second bearing point (5) on the one hand and on the second articulation point (12) on the other hand. SMA actuator Claim 2 , characterized in that a third bearing point (3) and that a second active element variable in length are provided, the second active element being held at the third bearing point (3). SMA actuator Claim 3 , characterized in that a third articulation point (13) is provided, the third articulation point (13) being formed at a distance from the first articulation point (11) and the second articulation point (12) and the pivot point (10) on the pivot body (9) , and that the length of the variable second active element is held on the third bearing point (3) on the one hand and on the third articulation point (13) on the other hand. SMA actuator Claim 3 , characterized in that the second active element is connected at an end opposite the third bearing point (3) with a displaceable latching lug (21) which is inserted into a first latching recess (23) formed on the pivoting body (9) and / or one on the pivoting body (9) formed second latching recess (24) can be used to lock the pivot body (9) in the first pivot end position and / or the second pivot end position. SMA actuator according to one of the Claims 2 to 5 , characterized in that a spring (17, 18) and / or a second SMA wire (15) are provided as the first active element and / or as the second active element. SMA actuator according to one of the Claims 1 to 6th , characterized in that the first SMA wire (14) and / or the second SMA wire (15) via connection elements (16) at the first bearing point (4) and / or the second bearing point (5) and / or the third Bearing point (3) and / or the first articulation point (11) and / or the second articulation point (12) are held and / or that the first SMA wire (14) and / or the second SMA wire (15) via the connection elements (16) are electrically contacted. SMA actuator according to one of the Claims 1 to 7th , characterized in that a locking contour is provided on the swivel body (9) and that a locking spring (18) cooperating with the locking contour is provided for locking the swivel body (9) in the first swivel end position and / or in the second swivel end position, the locking spring (18) is preferably designed as a leaf spring. SMA actuator according to one of the Claims 1 to 8th , characterized in that the first bearing point (4) and / or the second bearing point (5) and / or the third bearing point (3) are formed on the carrier plate (2) and / or that the third articulation point (13) as a pin is formed, which protrudes from the swivel body (9), and / or that the spring is designed as a return spring (17) or as a locking spring (18). Carrier module (1) for an SMA actuator, in particular for an SMA actuator according to one of the Claims 1 to 9 , comprising a carrier plate (2), a first bearing point (4) and a second bearing point (5) and a pivot mount (6) for a pivoting body (9) pivotable about a pivot point (10) being formed on the carrier plate (2). Carrier module (1) Claim 10 , characterized in that a third bearing point (3) is formed on the carrier plate (2). Carrier module (1) Claim 10 or 11 , characterized in that the first bearing point (4) and the second bearing point (5) and / or the third bearing point (3) are designed as pin receptacles and that a pin (20) is inserted into at least one pin receptacle. Carrier module (1) according to one of the Claims 10 to 12th , characterized in that positioning elements (33) are provided on the carrier plate (2) for the precise installation of the carrier plate (2). Carrier module (1) according to one of the Claims 10 to 13th , characterized in that at least one spring receptacle (7) for a locking spring (18) is provided on the carrier plate (2), the locking spring (18) preferably being designed as a leaf spring. Actuating arrangement with an SMA actuator, in particular an SMA actuator according to one of the Claims 1 to 9 , the SMA actuator providing at least one SMA wire (14, 15) which interacts with a swivel body (9) of the SMA actuator held pivotably about a pivot point (10), with an actuation box (28), the SMA The actuator is arranged installed in the actuation box (28) and swivels a cam (8) assigned to the actuation box (28), and with an actuation unit which has an actuation element held in a pivotable manner, the actuation element being operatively connected to the cam (8) in such a way that it is pivotable from a first pivot end position into a second pivot end position and back. Actuating arrangement according to Claim 15 , characterized in that a flap (25) is provided as an actuating unit, the flap (25) having a frame (26) and a cover (27) pivotably held in the frame (26) as an actuating element. Actuating arrangement according to Claim 15 or 16 , characterized in that the pivoting end positions are defined via at least one stop, the at least one stop being implemented as part of the actuation unit and / or as part of the SMA actuator. Actuating arrangement according to Claim 17 , characterized in that the at least one stop limits the pivoting movement of the pivoting body (9) and / or is implemented as part of the carrier module (1) and preferably as part of the carrier plate (2). Use of an SMA actuator according to one of the Claims 1 to 9 as an SMA actuator of an actuator assembly according to one of the Claims 15 to 18th . Use of an actuator assembly according to one of the Claims 15 to 18th as a fresh air valve actuation arrangement in a convection machine and / or as a refrigerator flap actuation arrangement in a refrigerator with ice and / or freezer compartment.

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