ACTUATOR

Description

[0001] The invention relates to an actuator, in particular an actuator with a engageable manual drive shaft for manual drive and an actuator comprising a stack structure arranged in a housing.

[0002] Actuators are used, among other things, to operate fittings and / or valves. With this type of actuator, it may be necessary to provide the option of manual operation of the actuator on-site, particularly for emergency operation of the actuator in the event of a failure of a drive unit, such as an electric motor.

[0003] In known actuators of the type mentioned above, for example, a handwheel is formed on a shaft for manual operation, which can be brought into the power or torque flow to the drive shaft using a coupling device. However, such coupling devices often have a complicated and / or failure-prone design.

[0004] In addition, actuators of the type mentioned above often include stacked structures within the actuator housing. The stacked structures can include functional elements of the actuator, such as motors for driving the actuator or coupling means for manually driving the actuator. A secure connection of the stacked structure to the housing is necessary, in particular to prevent damaging or disruptive (vibration) movements of the stacked structure relative to the housing. However, known connections are complex to manufacture and require rigid tolerance limits, which are incompatible with changes to the stacked structure during the manufacturing process and / or during use of the actuator. This can complicate the manufacturing process and lead to malfunctions or damage during use of the actuator.

[0005] DE 103 22 832 A1 describes a device for manual emergency actuation of a valve with a shut-off device and an actuating device arranged in a housing. The actuating device is detachably arranged with the shut-off device, and at least one gear is provided for transmitting the actuating energy to the shut-off device. The device has a special tool, and the gear can be actuated from the outside using this special tool.

[0006] US 6 084 370 A describes a switching device for the manual drive of an electric motor-driven actuator for controlling valves. In order to connect the manual drive with few components and at the same time ensure a simple design, while maintaining the operative connection between the drive motor and the power take-off during manual drive, a drive shaft stub of the axially fixed drive shaft is provided with a radial coupling pin. The handwheel shaft is axially displaceable and mounted in alignment with the drive shaft. The end of the handwheel shaft opposite the handwheel is provided with a coupling sleeve that is axially displaceable against the force of a compression spring. The end of the coupling sleeve facing the drive shaft has a groove whose entrance is widened on both sides by run-on bevels.The manual drive has means for actuating an electrical switch arranged in the circuit of the drive motor, which is closed when the manual drive is at rest and open when the handwheel shaft is switched on.

[0007] WO 2011 / 063904 A1 describes an actuating device for housing or housingless valves;in particular for valves for pipelines for the transport of liquid or gaseous medium, preferably for pipelines with a nominal diameter of DN 100 or more or channels, with a drive motor, a gearbox, and an emergency drive by means of which the gearbox can be actuated independently of the drive motor, wherein a servo motor is provided as the drive motor, which has a measuring device which determines the current position of the servo motor with respect to its initial position and outputs corresponding measured values, a working memory is provided into which the measured values ​​of the measuring device of the servo motor are written, an electronic control unit is provided which reads out the measured values ​​of the measuring device of the servo motor and carries out position control of the servo motor and thus of the actuating device on the basis of the measured values ​​of the measuring device of the servo motor.;

[0008] US 4 759 386 A describes an electrochemical linear actuator for the automatic control of a linear gas supply valve, which is equipped, for example, with an easily accessible and easy-to-use manual override option and at the same time offers an accurate position indication of the controlled linear movement valve in both automatic and manual operation.

[0009] US 5,295,907 A describes a device for limiting the torque transmitted from a drive shaft to a driven shaft, comprising a first body having a cylindrical portion and adapted for rotation with one shaft, and a second body having a cylindrical portion and adapted for rotation of the other shaft. The cylindrical portion of one body is mounted within the cylindrical portion of the other body for relative rotation therewith about an axis eccentric to the axis of rotation of the one body.A pin carried by the cylindrical part of the other body for radial movement with respect thereto has an inner and an outer end, the inner end being held in engagement with the cylindrical part of one body by a C-ring to allow the drive shaft to rotate the driven shaft until the torque transmitted between them overcomes the C-ring to allow the cylindrical parts of the bodies to rotate relative to each other.

[0010] US 4,647,007 A describes an automatic valve actuator that enables manual override for selective manual and motorized adjustment of a valve. The valve actuator comprises a drive motor, a gear assembly, and an axially displaceable coupling shaft for selective engagement or disengagement from the gear assembly. Displacing the coupling shaft actuates electrical switches that essentially simultaneously de-energize the valve actuator's drive motor. The coupling shaft remains connected to the valve during axial displacement, allowing manual displacement of the valve independently of the gear and motor. Adjustable limit switch actuation collars and a reversible electrical connection assembly are also disclosed.

[0011] The object of the invention is therefore to provide an improved actuator, in particular to create an actuator whose manufacture and handling are simplified.

[0012] The solution to this problem in the actuator of the type mentioned at the outset consists in particular in that the actuator comprises a hand control element with a engageable shaft for manual operation, wherein the hand control element is detachably connectable to a housing of the actuator, and wherein the hand control element, in a position connected to the housing, forces the coupling of the manual drive shaft to a gear of the actuator, in particular wherein the hand control element, in the position connected to the housing, is coupled directly or indirectly to the manual drive shaft.

[0013] The actuator's gearbox, for example, is a (main) drive gearbox that can be driven by a motor, particularly an electric motor of the actuator. The actuator described provides a manual drive option for the actuator, featuring a very simple mechanical design for selectively engaging the manual drive shaft. In other words, complex additional components are eliminated. This increases the robustness of the actuator and simplifies handling and the manufacturing process.

[0014] According to the invention, the hand control element, in the position connected to the housing, moves the hand drive shaft into a coupled position,

[0015] preferably against a restoring force, along a longitudinal axis of the hand drive shaft.

[0016] In particular, when connected to the housing, the hand control element can force the hand drive shaft from a disengaged position to a engaged position, in which the hand drive shaft is coupled to the actuator's gearbox. This represents a particularly simple and robust variant for selectively engaging the hand drive shaft.

[0017] In one embodiment, it is provided that a coupling means of the manual drive shaft is connected in one or the engaged position of the manual drive shaft to a coupling means of the transmission, preferably directly, non-positively and / or positively.

[0018] The coupling means(s) can, for example, be engagement means such as gears and / or friction wheels, which preferably mesh with each other. This further simplifies the design of the actuator.

[0019] According to the invention, it is provided that the hand control element is rotatably arranged in a receiving element which can be connected to the housing by means of a bayonet lock and / or wherein the hand control element has a or the receiving element which engages rotatably with the housing.

[0020] This allows for easy mounting of the hand control element to the housing. This further simplifies the coupling of the hand drive shaft and the handling of the actuator.

[0021] In one embodiment, it is provided that a slip clutch, in particular a tolerance sleeve, is formed between a coupling point of the housing for the hand control element and the gear.

[0022] In this way, overloading of the manual drive can be avoided even with low force design due to manual operation.

[0023] In one embodiment, it is provided that the actuator further comprises a coupling element comprising the slip clutch, in particular a coupling element comprising the tolerance sleeve, for coupling the manual drive element to the manual drive shaft.

[0024] This prevents overloading of the manual actuator, even with low force ratings, without increasing the number of actuator components. This further simplifies the actuator design.

[0025] In one embodiment, it is provided that the manual drive shaft or a movable coupling element for coupling the manual drive shaft to the gear box has a detectable element which cooperates with a sensor in order to distinguish the or a coupled position from a disengaged position of the manual drive shaft.

[0026] The detectable element can, for example, be a permanent magnet that is monitored by a magnetic field sensor that is arranged stationary, for example on the housing or in a built-in control electronics of the actuator. In this way, the engaged position of the manual drive shaft can be detected in a particularly simple manner. Furthermore, the engaged position can be recognized and subsequently a further drive unit for driving the gear, for example a motor or the (electric) motor of the actuator, can be deactivated. This further simplifies the engagement of the manual drive and the handling of the actuator. Furthermore, excessive or incorrect stress or strain caused by actuating the manual drive and ultimately damage to the further drive unit and / or the actuator can be avoided.

[0027] In one embodiment, it is provided that the manual control element, in particular a manual drive crank, can be fastened to the actuator housing.

[0028] This results in a particularly compact design of the actuator.

[0029] In one embodiment, it is provided that the actuator further comprises: a sealing ring which is inserted between two housing parts of the actuator housing; and / or a band, in particular a tensioning band, which is arranged at least partially around the housing or a housing part of the actuator; wherein the actuator housing and / or the band has a preferably molded-on receptacle, in particular a latching receptacle and / or a magnetic receptacle, for the hand-operated control element.

[0030] The locking receptacle is, for example, a locking connection and can be designed, in particular, as a finger-like projection. The band or tensioning band, for example, provides cable feedthroughs for the actuator. In other words, cable feedthroughs of the band or tensioning band can be arranged on the actuator such that they overlap with an opening in the housing of the actuator. In particular, it can be provided that the shape of the hand control element arranged in or on the receptacle follows the shape of the housing or a housing part. This further improves the compactness of the design of the actuator.

[0031] In one embodiment, it is provided that the actuator further comprises: a cover for one or the coupling point of the housing for the hand control element.

[0032] At the coupling point of the housing, the hand control element can be detachably connected to the housing or a housing part of the actuator. The cover can be placed over the coupling point when the hand control element is removed to prevent contamination of the coupling point. This further improves the robustness and longevity of the actuator.

[0033] As a further possibly independent aspect, the solution to the problem mentioned at the outset in an actuator of the type mentioned at the outset, which comprises a stack structure arranged in a housing, consists in particular in that the actuator further comprises: a connecting element for connecting the stack structure to the housing, wherein the connection between the housing and the stack structure has an axial degree of freedom.

[0034] In other words, the connecting element allows a connection between the housing and the stack assembly that has an axial degree of freedom. This axial degree of freedom allows displacement of the stack assembly relative to the housing in an axial direction, for example, in a longitudinal direction of the stack assembly and / or the housing. In other words, the connecting element allows expansion of the stack assembly in an axial direction, in particular a longitudinal direction, of the stack assembly.

[0035] The stack structure can comprise a plurality of stacked functional units of the actuator. The stack structure or the individual functional units or the intermediate elements, such as fastening elements or means arranged between the individual functional units, can have different heights during the manufacturing process and / or during use of the stack structure or the functional units (temporarily, for example due to heat exposure). In other words, the stack structure can have a tolerance in its height. Such functional units or elements can, for example, comprise a drive motor and / or a gearbox.

[0036] The disclosed actuator provides a connection between the housing and the stack assembly that has an axially displaceable degree of freedom. This provides a secure connection, particularly against twisting and radial deflections of the stack assembly, while also being able to accommodate the stack assembly's height tolerances. This improves the securing of the stack assembly within the housing.

[0037] In one embodiment, it is provided that the connecting element connects the stack structure to the housing laterally, preferably supporting and / or clamping the stack structure laterally in the housing.

[0038] This allows a stable connection of the stack assembly to the housing while ensuring the axial degree of freedom of the connection, for example, in the longitudinal direction of the stack assembly and / or the housing. The lateral connection is, for example, a connection in the direction of a transverse axis, in particular a transverse axis perpendicular to the longitudinal axis, of the housing and / or the stack assembly. This allows (vibrational) movements of the stack assembly relative to the housing to be avoided, reduced, or attenuated.

[0039] In one embodiment, it is provided that the connecting element is spaced apart from the stack structure along the axial degree of freedom, in particular along a longitudinal axis of the stack structure, and / or that the connecting element contacts the stack structure along an axis transverse to the axial degree of freedom, in particular along a transverse axis of the stack structure.

[0040] This allows the connection to offer a certain tolerance regarding the expansion of the stack structure in the longitudinal direction, without allowing an unintentionally large expansion or displacement of the stack structure in the longitudinal direction.

[0041] In one embodiment, it is provided that the actuator further comprises: at least two housing parts, wherein the connecting element is arranged between the two housing parts, in particular wherein the connecting element is a sealing element arranged between the two housing parts.

[0042] This allows for a particularly simple actuator design and reduces the number of actuator components. This results in a particularly compact and robust actuator.

[0043] The invention is described in more detail below using several preferred embodiments.

[0044] It shows: Fig. 1 shows a first actuator in a side sectional view with a manual drive shaft in the uncoupled position, Fig. 2 shows a side sectional view of the first actuator with the manual drive shaft in the coupled position, Fig. 3 shows a receiving element of a housing of the actuator in a three-dimensional view, Fig. 4 shows a manual control element of the actuator in a three-dimensional view, Fig. 5 shows the actuator in a three-dimensional view, Fig. 6 shows a section of a cross section of a second actuator similar to the first actuator.

[0045] The Figure 1shows a first actuator 1 in a lateral sectional view. The actuator 1 comprises a engageable manual drive shaft 2 for manually driving the actuator 1. The manual drive shaft 2 can be engaged or coupled directly or indirectly with a gear of the actuator. The gear 5 in the example shown comprises an upper planetary gear 5A and a lower planetary gear 5B and is used, for example, to position a valve. Figure 1 shows the manual drive shaft 2 in a decoupled position, i.e. in a position in which the manual drive shaft 2 is not coupled to the gear 5.

[0046] The actuator 1 comprises a housing 4. The housing 4 comprises a first, pot-shaped housing part 4A and a second housing part or housing cover 4B. A sealing element 11 or a sealing ring 11 is mounted between the first and second housing parts 4A, 4B. The sealing element 11 is, for example, a carrier of one or more sealing rings, such as O-rings.

[0047] The housing 4 further comprises a coupling point 10 for a hand-held control element 3 for detachably connecting the hand-held control element 3 to the housing 4, in particular the housing cover 4B. The coupling point 10 can be adapted to the hand-held control element 3 or represent a counterpart to the hand-held control element 3. Alternatively, the coupling point 10 can be suitable for detachably connecting conventional hand-held control elements, such as hexagon keys, to the housing 4. The coupling point 10 comprises a coupling element 7. The coupling element 7 has an outward-facing first receptacle 7A, i.e. facing the surroundings of the actuator 1. The first receptacle 7A is designed to receive the hand-held control element 3 or a part or a (coupling) end of the hand-held control element in order to connect the hand-held control element 3 to the housing 4, in particular to connect it in a force-fitting and / or form-fitting manner.

[0048] The coupling element 7 further has a second receptacle 7B. The second receptacle 7B is directed inward, i.e., toward the interior of the actuator 1 or the housing 4. The second receptacle 7B is configured, for example, as a slip clutch or a tolerance sleeve. The second receptacle 7B is designed to receive the manual drive shaft 2 or a first end of the manual drive shaft 2. The manual control element 3 can be connected or coupled to the manual drive shaft 2 via the coupling element 7.

[0049] The Figure 2 shows actuator 1 from Figure 1 in lateral sectional view. Identical or similar features are provided with the same reference symbols. Figure 2shows the manual drive shaft 2 in a coupled or engaged position, i.e., in a position in which the manual drive shaft 2 is coupled to the gear 5. The manual drive shaft 2 has a coupling means 8. In the coupled position, the coupling means 8 of the manual drive shaft 2 is coupled to a coupling means 9 of the gear 5, or is connected in a force-locking and / or form-locking manner. The coupling means 8 and 9 are, for example, intermeshing engagement means, such as gears. The coupling means 9 is mounted in the upper planetary gear 5A. The upper planetary gear 5A transmits a force introduced via the coupling means 9 to the lower planetary gear 5B.

[0050] By a translational movement of the hand drive shaft 2 along a longitudinal axis of the hand drive shaft 2, the hand drive shaft 2 can be moved from the decoupled position (as in Figure 1 shown) into the coupled position (as shown in Figure 2shown) are moved, brought or forced. As can be seen from Figure 2 As can be seen, connecting the hand control element 3 to the housing 4 causes or forces the translational movement of the hand drive shaft 2 from the decoupled position into the coupled position. In other words: by inserting a coupling end 3A of the hand control element 3 into the first receptacle 7A and moving the hand control element 3 along the longitudinal axis of the hand drive shaft 2 until the hand control element 3 reaches a locking or end position on the housing part 4, the translational movement of the hand drive shaft 2 from the decoupled position into the coupled position is forced.

[0051] By removing the hand control element 3 from the first opening 7A, a return spring 2A forces the hand drive shaft 2 to move from the coupled position to the uncoupled position. In other words: when the hand control element 3 is not connected to the housing 4, the hand drive shaft 2 is in the uncoupled position. In other words: By separating or removing the hand control element 3 from or from the housing 4, the decoupling of the hand drive shaft 2 from the gear 5 is forced. This occurs, for example, through a restoring force against which the hand drive shaft 2 is moved from the uncoupled position to the coupled position. In addition or alternatively, this occurs through the force or frictional connection between the coupling end 3A of the hand control element 3 and the first receptacle 7A.

[0052] The hand control element 3 comprises, as shown in the Figures 1 and 2shown a receiving element 6 for the positive and / or non-positive connection of the hand control element 3 to the housing 4, more specifically with a correspondingly oppositely designed receiving element 16 of the housing 4. The hand control element 3 is rotatably arranged in the receiving element 6 of the hand control element 3. The receiving element 6 engages around the coupling end 3A of the hand control element 3. The hand control element 3 can be connected to the housing 4 via the receiving elements 6 and 16 by means of a bayonet lock. In other words: the receiving element 6 of the hand control element 3 can be rotatably engaged in the receiving element 16 of the housing 4.

[0053] The actuator 1 further comprises a sensor and an element 2B detectable by the sensor in order to distinguish the engaged or coupled position of the manual drive shaft 2 from the disengaged or uncoupled position of the manual drive shaft 2. For this purpose, a movable coupling element or means for coupling the manual drive shaft 2 to the gear 5 can have the detectable element 2B. The movable coupling element with the detectable element 2B can, for example or alternatively, be the coupling element 7, the manual drive shaft 2 itself, or at least one of the coupling means 8 or 9. For example, the sensor detects a translational movement of the detectable element 2B along the longitudinal axis of the manual drive shaft 2. The detectable element 2B can, for example, be a permanent magnet mounted next to or near a stationary magnetic field sensor, preferably enclosed by the housing 4 or a control electronics 2C.Alternatively or additionally, the actuator may comprise another type of detectable element 2B and / or sensor to distinguish the engaged position from the disengaged position.

[0054] The receiving element 16 is separately in Figure 3 shown in three-dimensional view. The hand control element 3 is shown separately in Figure 4 shown in three-dimensional view. Identical or similar features are provided with the same reference symbols.

[0055] The Figure 5 shows a three-dimensional view of the actuator 1 from the Figures 1 and 2 . Identical or similar features are provided with the same reference symbols. As in the Figures 4 and 5As can be clearly seen, the hand control element 3 is designed as a crank. The hand control element 3 can be fastened to the housing 4 on an outer wall, here the outer surface of the housing 4. In the fastened position of the hand control element 3 on the housing outer wall, the hand control element 3 is not connected to the housing 4 for coupling the manual drive shaft 2 to the gear 5. In other words: the fastened position of the hand control element 3 is different from the connected position of the hand control element 3 described above. For example, the sealing ring 11, which is arranged between the two housing parts 4A and 4B of the housing, comprises a receptacle 13 for the hand control element 3 for fastening or mounting the hand control element 3 on the housing 4.

[0056] Alternatively or additionally, the actuator 1 can be used as shown in Figure 5shown, have a tensioning band 12. In the example shown, the tensioning band 12 comprises cable glands 17 for leading connecting cables into the interior of the housing 4. For this purpose, the housing 4 can have an opening that at least partially overlaps with openings of the cable glands 17. Just like the sealing ring, the tensioning band 12 can have a receptacle 13 for the hand-held control element 3.

[0057] The hand control element 3 has engagement means 18 (see Fig. 4 ), which can engage in the receptacle 13 or be received by it. In this way, the hand-held control element 13 can be arranged on the housing 4 in a space-saving manner or can be attached to it when the hand-held control element 3 is not in use for manually driving the actuator 1. The engagement means 18 enclose an opening. The hand-held control element 3 can be attached to the opening for storage, for example, on a key ring.

[0058] Additionally or alternatively, the hand control element 3 can comprise a first magnetic element and / or ferromagnetic element that interacts with a second magnetic element and / or ferromagnetic element on the housing 4, the sealing ring 11 and / or the clamping band 12 in order to fasten the hand control element 3 to the housing 4.

[0059] In the described unconnected state of the hand control element 13 with the housing 4, a cover 14, preferably fastened to the housing 4, can cover the coupling point 10, in particular the receiving element 16, of the housing 4 for the hand control element 3.

[0060] As in the Figures 1 and 2As shown, the actuator 1 comprises a stack structure 15. The stack structure 15 comprises one or more functional units of the actuator 1. The functional units include, for example, a drive motor and / or one or more gears of the actuator 1. For the secure and fixed arrangement of the stack structure 15 within the housing 4 or for connecting the stack structure to the housing 4, the actuator 1 comprises a connecting element. The connecting element is, for example, the sealing element 11 described above and / or is encompassed by it.

[0061] Figure 6 shows a section of a cross-section of a second actuator 20 similar to that shown in the Figures 1 and 2 shown first actuator 1. Identical or similar features are provided with the same reference numerals. Figure 6further shows a stack assembly element 19 as part of a stack assembly 15 arranged in the illustrated actuator. The stack assembly element 19 interacts with a connecting element 21, which may encompass the sealing element 11 or be encompassed by it, to connect the stack assembly 15 to the housing 4. The connecting element 21 may correspond to the sealing element 11 or be a second sealing element. As illustrated, the connecting element 21 and the stack assembly element 19 are connected to one another laterally, ie in a transverse direction to the stack assembly and / or to the housing 4, in particular by means of force or frictional engagement.

[0062] As from Figure 6As can be seen, the stack structure 15 or the stack structure element 19 are spaced apart from the connecting element 21 in the longitudinal direction of the stack structure 15, wherein the stack structure element 19 and connecting element 21 are connected or contact each other in the transverse direction of the stack structure 15. In other words: the connection of the stack structure 15 to the housing 4 has an axial degree of freedom, here in the longitudinal direction of the stack structure 15. Expressed again differently: the connecting element 21 is designed to connect the housing 4 to a stack structure 15 of varying height. In this way, deviations in the extension of the stack structure 15 in the direction of the axial degree of freedom, or here in the longitudinal direction of the stack structure 15, which can occur during manufacture and / or operation of the stack structure, can be tolerated or taken into account. List of reference symbols

[0063] 1First actuator 2Hand drive shaft 2AReturn spring 2BDetectable element 2CControl electronics 3Hand control element 3AClutch end of the hand control element 4Housing 4AFirst housing part 4BSecond housing part 5Gearbox of the first actuator 5AUpper planetary gear 5BLower planetary gear 6Receiving element of the hand control element 7Coupling element 7AFirst receptacle of the coupling element 7BSecond receptacle of the coupling element 8Coupling means of the hand drive shaft 9Coupling means of the gear 10Coupling point of the housing 11Sealing element 12Clamping band 13Clamping band receptacle 14Cover 15Stack structure 16Receiving element of the housing 17Cable glands of the clamping band 18Engaging means of the hand control element 19Stack structure element 20Second actuator 21Connecting or second sealing element

Claims

1. Actuator (1) comprising a housing (4), a gear (5), an engageable manual drive shaft (2) for the manual drive and a manual operating element (3); wherein the manual operating element (3) can be detachably connected to the housing (4) and wherein the manual operating element (3), in a position connected to the housing (4), forces a direct or indirect coupling of the manual drive shaft (2) to the gear (5), wherein the manual operating element (3), in the position connected to the housing (4), forces the manual drive shaft (2) against a restoring force into a coupled position along a longitudinal axis of the manual drive shaft (2), wherein the manual operating element (3) is rotatably arranged in a receiving element (6), wherein the receiving element (6) is connectable to the housing (4) by means of a bayonet catch, and wherein the manual operating element (3) comprises the receiving element (6), which rotatably engages with the housing (4).

2. Actuator (1) according to claim 1, wherein the manual operating element (3), in the position connected to the housing (4), is coupled directly or indirectly to the manual drive shaft (2).

3. Actuator (1) according to one of the preceding claims, wherein a coupling means (8) of the manual drive shaft (2) in one or the engaged position of the manual drive shaft (2) is connected to a coupling means (9) of the gear (5), preferably directly, in a force-fit and / or form-fit manner.

4. Actuator (1) according to one of the preceding claims, wherein a slipping clutch (7B), in particular a tolerance sleeve, is formed between a coupling point (10) of the housing (4) for the manual operating element (3) and the gear (5).

5. Actuator (1) according to one of the preceding claims, further comprising one or the slipping clutch (7B), in particular one or the tolerance sleeve, for coupling the manual drive element (3) to the manual drive shaft (2).

6. Actuator (1) according to one of the preceding claims, wherein the manual drive shaft (2) or a movable coupling element for coupling the manual drive shaft (2) to the gear (5) has a detectable element which interacts with a sensor in order to distinguish the or an engaged position from a disengaged position of the manual drive shaft (2).

7. Actuator (1) according to one of the preceding claims, wherein the manual operating element (3), in particular a manual drive crank, can be attached to the actuator housing (4).

8. Actuator (1) according to one of the preceding claims, further comprising: a sealing ring (11) which is inserted between two housing parts (4A, 4B) of the actuator housing (4); and / or a band (12), in particular a tensioning band, which is arranged at least partially around the housing (4) or a housing part (4A, 4B) of the actuator (1); wherein the actuator housing (4) and / or the band (12) has a preferably integrally formed receptacle (13), in particular a latching receptacle and / or a magnetic receptacle, for the manual operating element (3).

9. Actuator (1) according to one of the preceding claims, further comprising a cover (14) for one or the coupling point (10) of the housing (4) for the manual operating element (3).

10. Actuator (1) according to one of the preceding claims, comprising a stacked structure (15) arranged in a housing (4) and a connecting element (21) for connecting the stacked structure (15) to the housing (4), wherein the connection between the housing (4) and the stacked structure (15) has an axial degree of freedom.

11. Actuator (20) according to claim 10, wherein the connecting element (21) laterally connects the stacked structure (15) to the housing (4) along a transverse axis perpendicular to the longitudinal axis of the housing and / or the stacked structure, preferably laterally supporting and / or clamping the stacked structure (15) in the housing (4).

12. Actuator (20) according to claim 10 or 11, wherein the connecting element (21) is spaced from the stacked structure (15) along the axial degree of freedom, in particular along a longitudinal axis of the stacked structure (15).

13. Actuator (20) according to one of claims 10 to 12, further comprising at least two housing parts (4A, 4B), wherein the connecting element (21) is arranged between the two housing parts (4A, 4B), in particular wherein the connecting element (21) is a sealing element (11) arranged between the two housing parts (4A, 4B).