Packaged drive with electric motor

Abstract

The invention relates to a packaged drive comprising an electric motor (12). According to the invention, the electric motor (12) is arranged in a packaged housing (10) together with an output shaft (13) of the electric motor (12) and an inner magnetic coupling disc (16), wherein the output shaft (13) drives the inner magnetic coupling disc. The inner magnetic coupling disc (16) is magnetically coupled to an outer magnetic coupling disc (18) which is arranged on the outside of the housing (10) for transmitting the torque from the electric motor (12).

Description

Technical Field

[0001] The present invention relates to an encapsulated driver having an electric motor according to the preamble of claim 1. Background Technology

[0002] Encapsulated motor drives must be used in a variety of applications. When operating in environments where explosive gases or gas mixtures may be present, the enclosure prevents such gases from permeating into the drive. If gases or gas mixtures still accumulate within the encapsulated drive, the enclosure must ensure that the enclosure, all seals, and feedthroughs can withstand an explosion caused by the ignition of the gases by a spark. This prevents the explosion from spreading to the surrounding gas mixture.

[0003] Another application involves the operation of encapsulated actuators in liquids (e.g., underwater). In this case, proper encapsulation can prevent liquid from penetrating into the actuator.

[0004] In known drives, the output shaft of a packaged motor passes through an opening in a packaged housing to drive external mechanical components or a gearbox. In this case, the opening in the housing for the output shaft to pass through can be sealed by a so-called dynamic seal; however, dynamic seals cannot guarantee absolute sealing and are subject to high wear.

[0005] DE202016100090U1 describes a magnetic coupler with two rotors, one of which is coaxially surrounding the other, and both rotors are equipped with an even number of permanent magnets for transmitting torque. A so-called sealed canister, designed as a hollow cylinder, is arranged between the two rotors, concentrically surrounding the rotor connected to the driven body.

[0006] This type of encapsulated actuator requires a specific geometry to form a corresponding hermetically sealed shell, which not only complicates manufacturing and assembly, but also results in highly unfavorable characteristics regarding explosion safety.

[0007] Therefore, the object of this invention is to create a packaged actuator with improved pressure resistance. The improved pressure resistance provides better explosion protection, or better pressure resistance when operating in liquids. Summary of the Invention

[0008] This objective is achieved by the packaged driver according to claim 1.

[0009] In the encapsulated driver as described in claim 1, the motor, along with its output shaft and an inner magnetic coupling disk, is arranged within an encapsulated housing, wherein the output shaft drives the inner magnetic coupling disk. The inner magnetic coupling disk is magnetically coupled to an outer magnetic coupling disk disposed outside the housing to transmit the motor's torque.

[0010] By providing two magnetically coupled disks, the encapsulated actuator can be designed with a less complex housing structure, which significantly improves its explosion-proof and watertight properties. For example, the two coupled disks can be encapsulated simply by separating them from each other through a plate-like portion. According to the invention, the encapsulated actuator does not require complex structures such as sealed canisters (which require separating coaxially arranged rotors). For example, a cylindrical housing can be provided with a plate-like housing base that separates the two coupled disks from each other. This cylindrical housing offers significantly better pressure resistance compared to complex structures, and therefore the housing walls can be thinner.

[0011] As the explosion front spreads within the encapsulated actuator, the more complex geometry also leads to increased turbulence, resulting in localized temperature and / or pressure spikes. The encapsulated actuator according to the invention also significantly reduces this effect.

[0012] Preferred embodiments of the present invention are shown in the sub-claims.

[0013] A particularly preferred embodiment of the invention is in which the housing is explosion-proof or waterproof encapsulated. Explosion-proof encapsulation should be understood as pressure-resistant encapsulation, wherein all necessary feedthroughs, such as motor cables, are designed to withstand the corresponding pressure.

[0014] In another preferred embodiment of the invention, the external magnetic coupling disk is rotatably mounted to a pin arranged in the housing.

[0015] The external magnetic coupling disk may have a receiving portion through which the external magnetic coupling disk is arranged to the pin, and a bearing may be arranged between the receiving portion and the pin for rotatably mounting the external coupling disk.

[0016] Preferably, the output shaft, inner magnetic coupling disk, and outer magnetic coupling disk are arranged to rotate coaxially along the same axis of rotation of the driver. This provides the advantage that only a flat element of the housing, such as a housing base, is needed between the two magnetic coupling disks to separate the two coupling disks from each other and form an encapsulated housing around the inner magnetic coupling disk.

[0017] In another preferred embodiment of the invention, the inner magnetic coupling disk and the outer magnetic coupling disk each have at least one (or more) permanent magnets, wherein the longitudinal axis of the permanent magnets is arranged parallel to the rotation axis of the driver.

[0018] The permanent magnets can be designed as rod-shaped magnets (with a circular or other designed cross-section), and the inner and outer magnetic coupling disks can each have the same number of rod-shaped magnets. The rod-shaped magnets are preferably arranged such that one rod-shaped magnet on the inner magnetic coupling disk is associated with one rod-shaped magnet on the outer magnetic coupling disk. The associated permanent magnets are also preferably arranged so that their longitudinal axes are aligned along a common axis.

[0019] To form magnetic coupling, the associated bar magnets are preferably arranged along their common axis, such that the different magnetic poles of the bar magnets are associated with each other. In other words, the associated bar magnets are rotated 180 degrees relative to each other along their common axis, and the magnetic coupling is formed by the attraction of the different magnetic poles.

[0020] A particularly preferred embodiment of the invention is that the rod-shaped magnets of the inner and / or outer magnetic coupling disks are arranged along at least one circumference having a radius around a rotation axis, and the magnets have the same or alternating orientations.

[0021] A rod magnet can be formed by stacking several individual magnets.

[0022] In a particularly preferred embodiment of the invention, the inner and outer magnetic coupling disks each have at least one magnet, and these magnets are arranged such that the two coupling disks are magnetically coupled by the attraction of the magnets, allowing a fixed maximum torque of the motor to be transmitted from the inner magnetic coupling disk to the outer magnetic coupling disk via magnetic coupling. This embodiment of the invention provides another advantage: when a specified maximum torque is exceeded, the magnetic coupling is released, thereby preventing overload of components of the drive or driven element. For example, the maximum torque can be determined by the number and strength of the permanent magnets used and the distance between them (the distance between associated permanent magnets).

[0023] The housing may have a sub-housing for accommodating the motor and the internal magnetic coupling disk, wherein the sub-housing is sealed with a substrate in a pressure-resistant and / or explosion-proof manner. For example, the substrate may be welded to the sub-housing in a pressure-resistant manner.

[0024] Alternatively, the substrate can be connected to the sub-housing to create an explosion-proof and ignition-proof gap between the sub-housing and the substrate, thereby ensuring explosion protection.

[0025] In another preferred embodiment of the invention, the distance between the inner side of the housing and the motor and / or between the inner side of the housing and the inner magnetic coupling disk is designed to be pressure-resistant by maintaining a fixed maximum distance or maximum volume. By maintaining the maximum distance or maximum volume, it is advantageously ensured that only a small amount of flammable gas is present within the encapsulated actuator when flammable gas infiltrates, so that the pressure peak generated by the explosion does not exceed a specified limit.

[0026] The cavity between the inner side of the housing and the motor, and / or between the inner side of the housing and the inner magnetic coupling disk, can be at least partially filled with a filler material. This filler material, such as rock wool, will cause a reduction in temperature rise during an explosion because the filler material has a certain heat capacity. Furthermore, the filler material can prevent the formation of turbulence during the explosion, which also leads to a reduction in the pressure peak. Therefore, the wall thickness of the housing can be reduced, which, for example, reduces manufacturing costs.

[0027] In another preferred embodiment of the invention, the housing and housing base form a cavity, in which an inner mounting component is arranged, and a motor is mounted on the rear side of the inner mounting component. An inner bearing may be fixed to the front of the housing for rotatably mounting and / or centering the inner magnetic coupling disk and / or drive shaft against the housing base. This design of the encapsulated driver greatly simplifies the assembly and adjustment of the various components.

[0028] The distance between the inner magnetic coupling disc and the housing base can also be adjusted using this inner bearing. This not only prevents the rotating inner magnetic coupling disc from rubbing against the housing base, but also adjusts the magnetic coupling between the rotating magnetic coupling discs to regulate the specified maximum transmitted torque.

[0029] In another preferred embodiment of the invention, the housing is formed as a hollow cylindrical sub-housing, and the inner mounting member is formed as a mounting ring, wherein the inner radius of the hollow cylindrical sub-housing corresponds to the outer radius of the mounting ring.

[0030] This internal mounting component can divide the chamber into two sub-chambers, wherein the motor is preferably arranged in the first sub-chamber, and the internal magnetic coupling disk, internal bearing, and preferably the output shaft are also arranged in the second sub-chamber.

[0031] The resulting cavity can be arranged in the first sub-chamber, and the internal mounting components and / or internal bearings can seal against the interior of the housing, thereby preventing the filler material from migrating from the first sub-chamber to the second sub-chamber. This prevents the filler material from contacting the internal magnetic coupling disk, slowing down or stopping its rotation.

[0032] An outer mounting ring, preferably a retaining ring, can be disposed on the outside of the housing base. This outer mounting ring secures the outer bearing relative to the outside of the housing base. The outer bearing is used for rotatably mounting the outer magnetic coupling disk. This simplifies the overall design of the packaged driver.

[0033] A particularly preferred embodiment of the invention is that the housing base is arranged in the space between the inner and outer magnetic coupling disks, wherein the housing base can be a separate component and is preferably non-conductive and non-ferromagnetic. This means that other components of the housing can be made of ferromagnetic steel, and the non-ferromagnetic housing base still allows magnetic coupling between the two coupling disks.

[0034] In another preferred embodiment of the invention, an induction circuit is provided, fixed to the housing, in which an electrical signal is generated by the rotation of an external magnetic coupling disk. This induction circuit can be formed, for example, by two parallel lines connected to each other at one end. This induction circuit is used to detect overload. Through appropriate coupling, a determined rotational frequency of the external magnetic coupling disk is matched to a known frequency of the motor, and a corresponding signal is detected. In the event of an overload, this signal changes and can therefore be used to indicate the overload condition.

[0035] Alternatively, one or two Hall sensors can be placed in a fixed housing, where electrical signals are generated by rotating an inner and outer magnetic coupling disk. Frequency matching can also be determined by comparing frequencies. Attached Figure Description

[0036] The invention will now be explained in more detail with reference to the accompanying drawings. The drawings show:

[0037] Figure 1 : An exploded view of the packaged driver according to the present invention;

[0038] Figure 2 : Figure 1 A cross-sectional view of the assembled driver shown;

[0039] Figure 3 : Figure 1 Another cross-sectional view of the driver in its assembled form;

[0040] Figure 4 : A schematic diagram of the packaged driver according to the present invention;

[0041] Figure 5 : A view of the internal magnetic coupling disk of the driver in the aforementioned figure;

[0042] Figure 6 : A corresponding view of the external magnetic coupling disk of the driver in the aforementioned figures;

[0043] Figure 7 A schematic diagram of a packaged driver with a Hall sensor according to the present invention, and

[0044] Figure 8 Schematic diagram of an alternative packaged driver with a Hall sensor. Detailed Implementation

[0045] Figure 1 An encapsulated driver according to the invention is shown, which has a motor 12. The motor 12 is a common industrial motor, which is further developed into an explosion-proof driver with Ex-d type protection through the encapsulation of the housing 10. Figure 1 A special feature of the encapsulated driver is that the rotational motion of the output shaft 13 of the motor 12 can be transmitted from the inside of the explosion-proof encapsulated housing 10 to the area outside the housing 10 via magnetic coupling.

[0046] For known encapsulated drives, the shaft passing through the Ex d housing has very high requirements (strict tolerances, etc.) for the final sealing clearance (according to standard 60079-1). In known solutions, this tight cylindrical connection is achieved between the shaft and the bushing. These high requirements result in complex, expensive, and intensively maintained solutions, limiting the solutions to specific motors.

[0047] In the solution according to the invention, such as Figure 1 As illustrated in the example, a more cost-effective, low-maintenance, and low-risk solution is achieved through magnetic coupling, since virtually any industrial motor can be used here. Furthermore, magnetic coupling can limit maximum torque, thus preventing gearbox or motor overload. Compared to known solutions, this invention offers significant flexibility in using existing industrial motor solutions.

[0048] In order to form Figure 1 In the embodiment of magnetic coupling, the motor 12, along with its output shaft 13 and inner magnetic coupling disk 16, is arranged within the encapsulated housing 10. The output shaft drives the inner magnetic coupling disk 16. The inner magnetic coupling disk 16 is magnetically coupled to an outer magnetic coupling disk 18 disposed outside the housing 10 to transmit the torque of the motor 12.

[0049] Permanent magnets 22 and 20 are arranged in the recess 42 of the outer coupling disk 18 and the recess 40 of the inner coupling disk to form coupling. The output shaft 13 drives the inner coupling disk 16 to rotate about the same rotation axis 32, and the outer coupling disk 18 also rotates about the same rotation axis. The inner coupling disk 16 is attached to the output shaft 13 of the motor 12. To allow the inner coupling disk 16 to rotate within the housing 10, the inner coupling disk 16 is rotatably mounted inside the housing 10 via an inner bearing 26. The inner coupling disk 16 can be pressed into the bearing 26, thereby providing a step 41 on the inner coupling disk 16, the step 41 determining the depth to which the inner coupling disk 16 is pressed into the bearing 26. The inner coupling disk 16 rotates within a mounting ring 26, which is also arranged inside the housing 10. The motor 12 is attached to the mounting ring 24 by screws 36. The housing 10 is can-shaped with a housing base 46, which can be integrally molded onto a cylindrical sub-housing 44 of the housing 10 (see also). Figure 3 However, the housing base 46 can also be designed as a separate component and connected to the rest of the housing 10 in a pressure-resistant and / or explosion-proof manner.

[0050] On the side opposite to the housing base 46, the housing 10 is enclosed by a base plate 14. The base plate 14 is connected to the cylindrical sub-housing 44 of the housing 10 in such a way that an ignition-resistant gap 48 is provided between the base plate 14 and the sub-housing 44, the width and length of which are set so as not to be penetrated by any blast front. The base plate 14 is screwed onto the mounting ring 24 using screws 34.

[0051] An outer bearing 28 is disposed on the outside of the housing base 46, through which the outer coupling disk 18 is rotatably mounted to the housing 10. The outer coupling disk 18 can also be pressed into the bearing 28, thereby providing a step 43 on the coupling disk 18, which determines the depth of the press-fit. Setting the depth of the press-fit prevents friction between the outer coupling disk 18 and the housing base 46. The outer coupling disk 18 also has a recess 42 for accommodating the permanent magnet 22.

[0052] The outer bearing 28 is mounted on the housing base 46 via a retaining ring 30, which is then tightened to a flange 29 on the outside of the housing base 46 by screws 38. The flange 29 accommodates the outer bearing 28.

[0053] Although Figures 1 to 3 The packaged driver according to the present invention is shown in various cross-sectional views. Figure 1 This is also illustrated in a exploded diagram, but Figure 4 A schematic diagram of the external coupling disk 18 illustrates the packaged driver. In this view, the external coupling disk 18, which rotates together with the output shaft 13 via magnetic coupling, is surrounded by a retaining ring 30 (see [link to diagram]). Figures 1 to 3 The outer bearing 28 is fixed to the housing 10. Figure 2 The rotating shaft 32 is centrally and coaxially aligned, and a bump 60 is arranged on the outer coupling disk 18. The torque of the encapsulated driver is transmitted through the bump 60 to drive the object (not shown in detail). For example, the bump 60 can be used to drive a transmission. Alternatively, a pulley for belt drive can also be provided on the outer coupling disk 18.

[0054] Figure 5 and Figure 6 The inner coupling disk 16 is shown respectively. Figure 5 ) and external coupling disk 18 ( Figure 6 A view of the interrelated end faces of ( ).

[0055] As shown in the figure, the permanent magnet 20 of the inner coupling disk 16 and the permanent magnet 22 of the outer coupling disk 18 are designed as rod-shaped permanent magnets with a circular cross-section. Both the permanent magnet 22 of the inner coupling disk 16 and the permanent magnet 20 of the outer coupling disk 18 are arranged symmetrically around the rotation axis 32 along a circumference of radius R. To achieve magnetic coupling between the inner coupling disk 16 and the outer coupling disk 18, in this embodiment, the permanent magnet 20 of the inner coupling disk 16 is always arranged with its south pole (S) and north pole (N) alternately facing the outer coupling disk 18. The longitudinal axes of the permanent magnets 20 and 22 are arranged parallel to the rotation axis 32 passing through the center of the drive shaft 13. The longitudinal axes of the permanent magnets 20 and 22 are also offset outward along a circumference of radius R (see figure). Figure 6 ).

[0056] During driver assembly, the inner coupling disk 16 is connected to the output shaft 13 of the motor 12, for example, by insertion therein. The outer coupling disk 18 is rotatably mounted on the lower side 46 of the housing base outside the housing 10 via an outer bearing 28. Due to magnetic force, when the motor 12 is stationary, the outer coupling disk 18 is arranged relative to the inner coupling disk 16 in such a way that the permanent magnet 22 of the outer coupling disk 18 is aligned with the permanent magnet 20 of the inner coupling disk 16, with the south pole of the permanent magnet 22 aligned toward the housing 10 and the north pole (N) of the permanent magnet 20 mounted toward the inside of the housing base 46.

[0057] Of course, more or fewer magnets can be installed. In particular, all the magnets 20 of the inner coupling disk 16 can be installed in the same orientation, i.e., not with alternating polarities. Accordingly, the magnets 22 of the outer coupling disk 18 must also be installed in the same orientation, and their orientation is opposite to that of the magnets 20 of the inner coupling disk 16. Besides alternating or identical orientation installation, any other variations are possible, wherein the installation symmetry in the inner coupling disk 16 must correspond to the installation of the magnets 22 of the outer coupling disk 18 in order to obtain the corresponding magnetic coupling. The formation of magnetic coupling, i.e., the maximum torque that the encapsulated actuator according to the invention can transmit, is now determined in part by the size and dimensions of the installed magnets 20 and 22. Depending on the size and material of the magnets 20 and 22, different magnetic fields will result in different magnetic couplings.

[0058] Furthermore, the magnetic coupling also depends on the mounting distance between magnets 22 and 20 on the inner coupling disk 16 and the outer coupling disk 18. The minimum distance is determined by the thickness of the housing base 46. The actual distance is also determined by the distance between magnets 20 and 22 and the inner and outer sides of the housing base 46. By designing these distances and the corresponding dimensions of the permanent magnets, the maximum transmittable torque of the packaged driver can be determined, which can be used to prevent overload of the driver itself or the driven components.

[0059] Figure 3Various cavities 52 formed within the housing 10 are shown. For example, the housing 10 forms a chamber 50 in which the explained components, such as the motor 12, drive shaft 13, and inner coupling disk 16, are arranged. This chamber 15 is divided into a first sub-chamber 54 and a second sub-chamber 56. The first sub-chamber 54 houses the motor 12, and the second sub-chamber 56 has the rotating inner coupling disk 16 rotatably mounted in particular. These cavities 52 are formed because these components do not completely fill the first and second sub-chambers 54 and 56. The encapsulated actuator can now be designed integrally to keep the resulting cavities 52 as small as possible. This provides the advantage that any penetrating flammable gas or gas mixture can only fill a very small volume, so the explosion pressure of any explosion can be kept very small, thus not damaging the housing 10. By making the resulting cavities 52 as small as possible, the wall thickness of the housing 10 can be kept relatively small.

[0060] To mitigate the effects of a potential explosion within the housing 10, the corresponding cavities 52 may also be at least partially filled with a filler material. The filler material is preferably used in areas without rotating elements, specifically in the first sub-chamber 54 housing the motor 12, but not in the second sub-chamber 56 housing the rotating inner coupling disk 16. When used in a potentially explosive atmosphere, the appropriate filler material must be suitable for minimizing the pressure generated by the explosion. Rock wool, for example, can be used as a filler material. On the one hand, the filler material reduces the free volume in the cavity 52; on the other hand, it suppresses turbulent gas flow along the geometry within the housing 10, thereby reducing the peak temperature and pressure during an explosion. The thermal capacity of the filler material further reduces the peak temperature.

[0061] Figure 7 and Figure 8 Schematic diagrams of a packaged driver according to the present invention, having a first Hall sensor 62 and a second Hall sensor 64, are shown. The first Hall sensor 62 is associated with an inner coupling disk 16, and the second Hall sensor 64 is associated with an outer coupling disk 18. Because the rotation of magnets 20 and 22 of coupling disks 16 and 18 modulates a changing magnetic field, Hall sensors 62 and 64 generate electrical signals related to the rotational speed of the associated coupling disks 16 and 18, thereby allowing their rotational speed to be detected. If the detected rotational speed of the inner coupling disk 16 is greater than that of the outer coupling disk 18, it can be assumed that the magnetic coupling between the two coupling disks 16 and 18 has loosened, for example, due to driver overload. A fixed torque release device can be provided to avoid damage to components. The Hall sensor 62 associated with the inner coupling disk 16 can also be omitted, and the known rotational speed of the motor 12 can be used instead for comparison.

[0062] exist Figure 7 In one embodiment, Hall sensors 62 and 64 are arranged on the side of the driver. Figure 8 In this embodiment, Hall sensors 62 and 64 are arranged between two coupling disks 16 and 18. In either case, the arrangement and orientation of Hall sensors 62 and 64 enable the detection of rotation of the associated coupling disks. Figure 7 Implementation examples and Figure 8 In one embodiment, the drive pulley 66 may be connected to the outer coupling disk 16 and used to drive a toothed belt or gear.

[0063] List of reference numerals

[0064] 10 housing

[0065] 12 electric motors

[0066] 13 output shafts

[0067] 14 substrates

[0068] 16 internal coupling disks

[0069] 18 external coupling disks

[0070] 2016 magnets

[0071] 2218 magnet

[0072] 24 Installation Ring

[0073] 26 inner bearing

[0074] 28 outer bearing

[0075] 29 flange

[0076] 30 ring

[0077] 32 rotating axes

[0078] 34 screws

[0079] 36 screws

[0080] 38 screws

[0081] The concave part of 4016

[0082] 4116 steps

[0083] The concave part of 4218

[0084] 4318 steps

[0085] 4410 subshell

[0086] 46 Shell base plate

[0087] 48 Anti-ignition interval

[0088] 50 chambers

[0089] 52 cavity

[0090] 54 First Subchamber

[0091] 56 second sub-chamber

[0092] 58 outer side

[0093] 60 bumps

[0094] 62 Hall Sensor

[0095] 64 Hall Sensor

[0096] 66 drive disk

Claims

1. A packaged driver including an electric motor (12), characterized in that, The motor (12), along with its output shaft (13) and internal magnetic coupling disk (16), is arranged in a packaged housing (10), wherein the output shaft (13) drives the internal magnetic coupling disk (16), and The inner magnetic coupling disk (16) is magnetically coupled to the outer magnetic coupling disk (18), which is arranged outside the housing (10) for transmitting torque from the motor (12).

2. The packaged driver according to claim 1, characterized in that, The housing is designed to be explosion-proof or watertight.

3. The packaged driver according to any one of the preceding claims, characterized in that, The external magnetic coupling disk (18) is rotatably mounted to a pin arranged in the housing (10).

4. The packaged driver according to claim 3, characterized in that, The external magnetic coupling disk (18) has a receiving portion by means of which the external magnetic coupling disk is mounted to the pin shaft, and a bearing for rotatably mounting the external coupling disk (18) is arranged between the receiving portion and the pin shaft.

5. The packaged driver according to any one of the preceding claims, characterized in that, The output shaft (13), the inner magnetic coupling disk (16), and the outer magnetic coupling disk (18) are arranged to rotate coaxially along the same rotation axis (32) of the driver.

6. The packaged driver according to any one of the preceding claims, characterized in that, The inner magnetic coupling disk (16) and the outer magnetic coupling disk (18) each contain at least one permanent magnet (20, 22), wherein the longitudinal axis of the permanent magnet (20, 22) is arranged parallel to the rotation axis (32) of the driver.

7. The packaged driver according to claim 4, characterized in that, The permanent magnets (20, 22) are designed as rod magnets and the inner magnetic coupling disk (16) and the outer magnetic coupling disk (18) each contain the same number of rod magnets, and one rod magnet of the inner magnetic coupling disk (16) is associated with one rod magnet of the outer magnetic coupling disk (18), wherein the associated permanent magnets are arranged such that their longitudinal axes are aligned along a common axis.

8. The packaged driver according to claim 7, characterized in that, The associated bar magnets are arranged along their common axis such that the different magnetic poles of the bar magnets are associated with each other.

9. The packaged driver according to any one of claims 7 or 8, characterized in that, The rod magnets of the inner and / or outer magnetic coupling disks (16, 18) are arranged along at least one circumference in the same or alternating orientations, the circumference having a radius (r) around the axis of rotation (32).

10. The packaged driver according to any one of claims 7 to 9, characterized in that, The rod-shaped magnet is formed by stacking multiple individual magnets.

11. The packaged driver according to any one of the preceding claims, characterized in that, The inner magnetic coupling disk (16) and the outer magnetic coupling disk (18) each include at least one magnet (20, 22), which are arranged such that the two coupling disks (16, 18) are magnetically coupled by the attraction of the magnets in such a way that a predetermined maximum torque of the motor (12) can be transmitted from the inner magnetic coupling disk (16) to the outer magnetic coupling disk (18) by means of magnetic coupling.

12. The packaged driver according to any one of the preceding claims, characterized in that, The housing (10) includes a sub-housing (44) for accommodating the motor (12) and the inner magnetic coupling disk (16), wherein the sub-housing (44) is sealed by a base plate (14) in a pressure-sealed and / or explosion-proof manner.

13. The packaged driver according to claim 12, characterized in that, The substrate (14) is pressure-sealed and welded to the sub-shell (44).

14. The packaged driver according to claim 12, characterized in that, The substrate (14) is connected to the sub-housing (44) such that a flame-retardant ignition-resistant gap (48) is formed between the sub-housing (44) and the substrate (14).

15. The packaged driver according to any one of the preceding claims, characterized in that, The gap between the inner surface of the housing (10) and the motor (12) and / or between the inner surface of the housing (10) and the inner magnetic coupling disk (16) is designed to be pressure resistant by means of maintaining a specified maximum gap or maximum volume.

16. The packaged driver according to any one of the preceding claims, characterized in that, The cavity (52) between the inner surface of the housing (10) and the motor (12) and / or between the inner surface of the housing (10) and the inner magnetic coupling disk (16) is at least partially filled with a non-gaseous filling material.

17. The packaged driver according to any one of the preceding claims, characterized in that, The housing (10) forms a chamber (50) having a housing base plate (46), wherein an inner mounting member is arranged in the chamber (50), and the motor (12) is mounted on the rear side of the inner mounting member and has an inner bearing (20) defined on its front side for rotatably supporting and / or centering the inner magnetic coupling disk (16) and / or the output shaft (13) against the housing base plate (46).

18. The packaged driver according to claim 17, characterized in that, The distance between the inner magnetic coupling disk (16) and the housing base (46) can be adjusted by means of the inner bearing (20).

19. The packaged driver according to claim 17 or 18, characterized in that, The housing (10) is formed with a hollow cylindrical sub-housing (44), the inner mounting member is designed as a mounting ring (24), and the inner diameter of the hollow cylindrical sub-housing (44) corresponds to the outer diameter of the mounting ring (24).

20. The packaged driver according to any one of claims 16 to 19, characterized in that, The internal mounting component divides the chamber (50) into two sub-chambers (54, 46), wherein the motor (12) is preferably arranged in the first sub-chamber (54) and the internal magnetic coupling disk (16), the internal bearing (20) and preferably the output shaft (13) are also arranged in the second sub-chamber (56).

21. The packaged driver according to claims 16 and 20, characterized in that, The formed cavity (52) is arranged in the first sub-chamber (54) and seals the inner mounting and / or the inner bearing (26) against the inner surface of the housing (10), thereby preventing the filling material from being transferred from the first sub-chamber (54) to the second sub-chamber (56).

22. The packaged driver according to any one of claims 17, characterized in that, Preferably, the outer mounting part of the retaining ring (30) abuts and fixes the outer bearing (28) for rotatably mounting the outer magnetic coupling disk (18) to the outer surface (58) of the housing base plate (46).

23. The packaged driver according to any one of claims 17, characterized in that, The housing base plate (46) is arranged in the space between the inner magnetic coupling disk (16) and the outer magnetic coupling disk (18), wherein the housing base plate (46) may be a separate component and is preferably non-conductive and non-ferromagnetic.

24. The packaged driver according to any one of the preceding claims, characterized in that, An induction circuit is provided fixed to the housing, in which an electrical signal is generated by the rotation of the outer magnetic coupling disk (18).

25. The packaged driver according to any one of the preceding claims, characterized in that, One or optionally two Hall sensors (62, 64) are configured to be fixed to the housing, wherein one Hall sensor (64) is associated with the outer magnetic coupling disk (18) and the optional Hall sensor (62) is associated with the inner magnetic coupling disk (16), and wherein an electrical signal is generated by rotation of the associated magnetic coupling disk (16, 18).

26. The packaged driver according to any one of the preceding claims, characterized in that, The inner coupling disk (16) is rotatably mounted via an inner bearing (26) and preferably pressed into the inner bearing (26), wherein a step (41) is provided on the inner coupling disk (16) to determine the depth to which the inner coupling disk (16) is pressed into the inner bearing (26).

27. The packaged driver according to any one of the preceding claims, characterized in that, An outer bearing (28) is provided on the outer side of the housing base plate (46) to rotatably mount the outer coupling disk (18) to the housing (10), wherein the outer coupling disk (18) is preferably pressed into the outer bearing (28), and a step (43) is provided on the outer coupling disk (18) to define the depth of the press fit in order to prevent the outer coupling disk (18) from rubbing against the housing base plate (46).

Images