Drive device with an electric motor, a speed reducer and an adapter housing arranged between the electric motor and the speed reducer

Abstract

The invention relates to a drive arrangement having an electric machine, a gear reduction and an adapter housing arranged between the electric machine and the gear reduction, wherein a rotor shaft of the electric machine is connected with a first coupling piece, which has a slot into which an elastic region of an input shaft of the gear reduction extends, wherein an intermediate piece is arranged between the first coupling piece and the input shaft, in particular between the first coupling piece and the elastic region of the input shaft.

Description

Technical Field

[0001] The present invention relates to a drive device having a motor, a reducer, and an adapter housing disposed between the motor and the reducer. Background Technology

[0002] As is well known, a speed reducer can be driven by an electric motor and therefore can provide power.

[0003] As the closest prior art, a drive device is known from DE 10 2018 000 963 A1.

[0004] A coupling is known from DE 691 23 720 T2.

[0005] A force transmission connection device is known from DE 600 23 798 T2.

[0006] A driving unit for a photodetector is known from JP 2003-091 208 A. Summary of the Invention

[0007] Therefore, the object of the present invention is to improve a drive device in which noise emissions are reduced.

[0008] According to the present invention, this objective is achieved by a driving device according to the following features.

[0009] An important feature of this invention regarding the drive device is that the drive device includes a motor, a reducer, and an adapter housing disposed between the motor and the reducer.

[0010] The rotor shaft of the motor is connected to a first connecting member, which has a groove into which the elastic region of the input shaft of the reducer extends.

[0011] An intermediate component is arranged between the first connector and the input shaft, particularly between the elastic regions of the first connector and the input shaft.

[0012] The advantage here is that the intermediate component is arranged between the motor and the reducer, thus achieving not only a connection function but also a reduction in noise emissions. Because the materials of the intermediate component are matched with the corresponding materials of the input shaft and the first connecting member, axial and radial vibration modes are prevented from propagating from the motor to the reducer, or vice versa. This reduces noise emissions.

[0013] In an advantageous design, the intermediate component is made of a material softer than the input shaft and the first connector.

[0014] Specifically, the intermediate components are made of plastic, while the input shaft is made of metal, particularly steel, and the first connecting component is also made of metal, particularly steel. The advantage of this is that vibration modes are attenuated, thus reducing noise emissions.

[0015] In an advantageous design, the resilient region protrudes axially from the axial end region of the input shaft facing the motor. This allows the intermediate member to be fitted onto the resilient region, such that the resilient region extends into a receiving area defined by the wall, wing, and stop regions of the intermediate member. Therefore, the resilient region can be transversely and form-locked to the intermediate member.

[0016] In an advantageous design, the elastic region extends in a direction perpendicular to the axis of rotation of the input shaft, particularly in the radial direction. This is advantageous because the elastic region extends further in the transverse direction relative to the axial direction than in the axial direction or in a direction perpendicular to that transverse direction. Therefore, high torque can be transmitted from the elastic region to the first coupling member because the elastic region extends into a correspondingly shaped groove in the first coupling member.

[0017] In an advantageous design, the groove extends in a direction perpendicular to the axis of rotation of the input shaft, particularly in the radial direction. The advantage here is that the groove extends further in the transverse direction than in the axial direction or another direction perpendicular to the transverse direction. Therefore, a non-rotatable connection is achieved between the first coupling and the input shaft, a connection that is even gapless due to the intermediate member arranged in the middle, and thus results in less noise emission.

[0018] In an advantageous design, the slot, particularly the slot opening, faces the input shaft. This has the advantage that a resilient region can extend into it, thus enabling a non-rotatable connection between the first coupling and the input shaft of the reducer.

[0019] In an advantageous design, the groove is formed in the first connecting member, particularly in a substantially hollow cylindrical protrusion. The advantage here is that air can escape when the rotor shaft is inserted, and the intermediate piece can be fitted onto the protrusion.

[0020] In an advantageous design, the slot is formed in a first connecting member, which is essentially a hollow cylinder. The advantage here is that air can escape when the rotor shaft is inserted into the first connecting member, and a compact solution can be achieved.

[0021] In an advantageous design, the groove is arranged between the two claw-shaped regions of the first connector. The advantage here is that simple manufacturing is achieved by forming the groove with a rectangular or square cross-section.

[0022] In an advantageous design, the groove is defined by two claw-shaped regions of the first connecting member, specifically wherein the groove is arranged between the two claw-shaped regions. The advantage here is that simple manufacturing is possible, particularly by forming a groove with a rectangular or square cross-section.

[0023] In an advantageous design, each of the two claw-shaped regions is designed as a cylindrical segment. The advantage here is that the shape of the claw-shaped region can be achieved by forming a groove in the hollow cylinder, especially when the groove width exceeds the diameter of the axial hole in the first connector.

[0024] In an advantageous design, the first coupling has a shoulder, specifically a diameter abrupt change, between the protrusion and / or claw-shaped region and the rest of the first coupling. The advantage here is that the interface orientation towards the reducer remains constant, and the shoulder is only required on the first coupling to connect a rotor shaft with a larger diameter.

[0025] In an advantageous design, the first connecting member is connected to the rotor shaft of the motor in a force-locking manner, particularly with a heat-shrink fitting.

[0026] In particular, the rotor shaft extends into the axially penetrating cavity of the first connecting member. The advantage here is that a simple and cost-effective connection can be achieved to transmit high torque.

[0027] In an advantageous design, the adapter housing has radially inwardly projecting tongue regions in the area covered axially by the first coupling. Each tongue region has two radially spaced, and particularly circumferentially spaced, axially penetrating holes. These holes are specifically for screws passing through holes further radially inward or outward. The corresponding threaded areas of these screws are screwed into corresponding threaded holes in the motor, particularly into the threaded holes of the motor's bearing flange. The advantage here is that motors of different sizes can be connected to the adapter housing, and correspondingly different sized rotor shafts can be connected to the input shaft using the same intermediate and resilient area of ​​the corresponding first coupling.

[0028] In an advantageous design, the adapter housing is tightened onto the reducer by means of screws that are screwed into threaded holes arranged in the reducer along the axial direction. The advantage here is that a simple yet stable connection is achieved.

[0029] In an advantageous design, the intermediate component has a stop region, particularly a tab-shaped stop region, which connects the first wing region and, particularly, the lower second wing region, and abuts against the bottom of the groove. This provides an advantage in achieving improved stability for the intermediate component. Furthermore, the intermediate component abuts against the first connecting member, particularly against the bottom of the groove formed at the first connecting member, via the stop region.

[0030] In a favorable design, the first wall region is connected to the first wing region and then to the second wing region.

[0031] The first wall region and the first stop region are both designed to be flat. The wall region is perpendicular to the first stop region, and specifically, the normal direction of the plane receiving the first wall region is perpendicular to the normal direction of the plane receiving the first stop region. This has the advantage of achieving improved stability and stiffness at the intermediate points.

[0032] In a favorable design, the second wall region is connected to the first wing region and also to the second wing region.

[0033] The second wall region is designed to be flat, and the second stop region is also designed to be flat. The wall region is perpendicular to the second stop region, specifically, the normal direction of the plane receiving the second wall region is perpendicular to the normal direction of the plane receiving the second stop region. This has the advantage of achieving improved stability and stiffness at the intermediate point.

[0034] In an advantageous design, the first tongue region is connected to the first wing region, the second wing region, and the first wall region.

[0035] The first tongue area is designed to be flat, and this flatness is parallel to the first stop area. The advantage of this is that it avoids incorrect assembly of the intermediate components and improves their rigidity.

[0036] In an advantageous design, the second tongue region is connected to the first wing region, the second wing region, and the second wall region.

[0037] The second tongue region is designed to be flat, and this flatness is parallel to the first stop region and / or the second stop region. The advantage of this is that it avoids incorrect assembly of the intermediate components and improves their rigidity.

[0038] In an advantageous design, the elastic region of the input shaft contacts the first and second stop regions on the side opposite to the motor, and the bottom of the first connecting member, particularly the groove, contacts the first and second stop regions on the side of the stop regions opposite to the elastic region. The advantage here is that the intermediate member can be fitted onto the input shaft, particularly onto the axially protruding elastic region of the input shaft.

[0039] In an advantageous design, the intermediate component is designed to be longer than the elastic region in the direction of its maximum extension, specifically allowing the intermediate component to move back and forth relative to the elastic region when the first connecting member is removed. The advantage here is that reducers with input shafts of different sizes can be used, but these input shafts each have an elastic region of the same width and differ from each other only in the direction perpendicular to the axial direction at the longest extension of each elastic region.

[0040] In an advantageous design, the first tongue region rests against the axial end side of the input shaft, particularly adjacent to the axial end side of the input shaft with a gap. The advantage here is that a stable and thus low-noise connection between the input shaft and the intermediate component can be achieved.

[0041] This invention is not limited to the above-described combination of features. Those skilled in the art, particularly those seeking to achieve the stated purpose and / or by comparison with the prior art, will recognize other reasonable combinations of the above-described features and / or individual features described above and / or features described below and / or features in the accompanying drawings. Attached Figure Description

[0042] The present invention will now be described in detail with reference to the schematic diagram:

[0043] exist Figure 1 The first geared motor according to the present invention is shown in oblique view. The first geared motor has an adapter arranged between the motor 3 and the reducer housing 1, and the adapter has an adapter housing 2.

[0044] exist Figure 2 The diagram shows an exploded perspective view of the geared motor, in which intermediate component 22 and connecting component 25 can be seen.

[0045] exist Figure 3 The image shows a perspective view of the decomposition from another viewpoint.

[0046] exist Figure 4 The adapter housing 2 is shown in a top view.

[0047] exist Figure 5 The input shaft 20, intermediate component 22, and connecting component 25 of the reducer are shown in a perspective view.

[0048] exist Figure 6 The evidence shown is based on observation from another perspective. Figure 5 The combination of .

[0049] exist Figure 7 The assembly is shown in a perspective view.

[0050] exist Figure 8 The combination is shown in a side view.

[0051] exist Figure 9 The middle component 22 is shown in a perspective view.

[0052] exist Figure 10 The middleware 22 is shown in a slanted view from another perspective.

[0053] exist Figure 11 The second geared motor according to the invention is shown in a side view, wherein the second coupling member 120 is arranged inside the adapter housing 2.

[0054] exist Figure 12 The diagram shows an exploded view of the second geared motor.

[0055] exist Figure 13 The image shows a view taken from another perspective.

[0056] exist Figure 14 The second assembly, consisting of input shaft 20, intermediate component 22, and second connecting component 120, is shown in a perspective view.

[0057] exist Figure 15 The image shows a second combination viewed from another perspective.

[0058] exist Figure 16 The second assembly is shown in the diagram. Detailed Implementation

[0059] like Figures 1 to 11 As shown, a bearing is housed in the reducer housing 1, which rotatably supports the input shaft 20 of the reducer.

[0060] The input shaft 20 has teeth, particularly pinion teeth, which mesh with another toothed component of the reducer.

[0061] The input shaft 20 has a resilient region 21 on its end region facing the motor 3. The resilient region 21 extends in the radial direction. An axially oriented hole is formed centrally in the resilient region 21 within the input shaft 20, the axis of which is coaxial with the axis of rotation of the input shaft.

[0062] The first connecting member 25 is fitted onto the rotor shaft 26 of the motor 3. For this purpose, the first connecting member is constructed with a notch extending in the axial direction, i.e., along the rotation axis of the input shaft 20 of the reducer. Therefore, air can escape when the connecting member 25 is fitted onto the rotor shaft 26.

[0063] The elastic region 21 of the input shaft 20 extends into a radially extending groove in the first connecting member 25, which is arranged between two claw-shaped regions 30 protruding toward the reducer. Here, the two claw-shaped regions 30 are formed by creating radially extending grooves in a cylindrical region of the first connecting member that is coaxial with the rotation axis of the first connecting member 25. Therefore, the radially outer periphery of the two claw-shaped regions 30 is formed as a cylinder.

[0064] An axial hole is formed at the center of the first coupling 25 between the claw-shaped regions 30, so that the air displaced when the first coupling 25 is fitted onto the shaft can escape.

[0065] The intermediate component 22 is fitted onto the elastic region 21. Therefore, the intermediate component 22 is axially arranged between the input shaft 20 and the first connecting member 25. Preferably, the intermediate component 22 is made of a material softer than both the first connecting member 25 and the input shaft 20. Specifically, the intermediate component 22 is made of plastic, while the input shaft 20 and the first connecting member 25 are made of steel.

[0066] Therefore, the vibration modes that are continuous along the axial direction are attenuated.

[0067] The first connecting member 25 is preferably force-locked to the rotor shaft 26.

[0068] Axial holes are formed on the bearing flange of the motor facing the adapter housing 2, into which screws 23 passing through the adapter housing 2 can be screwed, so that the adapter housing can be connected to the motor housing, especially the bearing flange.

[0069] The other screw 24 passes through the adapter housing 2 and is screwed into the axial hole of the reducer, specifically the threaded hole.

[0070] The claw-shaped region 30 protrudes toward the reducer on the first connecting member 25.

[0071] A radially inwardly protruding tongue region 40 is formed on the adapter housing 2, through which screws 23 pass, wherein the corresponding screw head is arranged on the side facing the reducer, and the threaded area of ​​the corresponding screw is screwed into the corresponding axial hole of the bearing flange.

[0072] exist Figure 2In the diagram, the adapter housing 2 is shown as radially inwardly projecting tongue regions with schematic indication. Screws 23 pass through these tongue regions to screw the threaded portion of the screw into the axially pointing threaded hole of the bearing flange of the motor 3, particularly the bearing flange of the motor 3 facing the reducer.

[0073] exist Figure 4 The diagram shows an adapter housing 2 with tongue regions 40, each tongue region having two axially penetrating holes, which are radially spaced apart from each other in the circumferential direction. Therefore, screws 23 passing through each tongue region 40 can be arranged in different radial ranges, i.e., related to the size of the motor, the motor's hole pattern is correspondingly arranged in a smaller or larger radial range. Axially penetrating holes 42 that are radially more inward are provided for smaller motors, while holes radially more outward are used for larger motors.

[0074] The intermediate part 22 is formed in such a way, particularly as an injection molded part, that after the intermediate part 22 is fitted onto the elastic region 21 of the input shaft 20, the stop region 53 abuts against, and in particular stops, the axial end face of the elastic region 21.

[0075] The stop region 53 is arranged on the end region of the intermediate member 22 facing the first connecting member 25. The stop region is in continuous contact with the elastic region 21 in the circumferential direction.

[0076] A notch, which is constructed as an elongated hole, is arranged in the stop region 53 and passes through the intermediate member 22 axially. The notch is bounded by the stop region 53.

[0077] Therefore, when the first connector 25 is fitted onto the rotor shaft 26, and the intermediate member 22 is already fitted onto the first connector 25 before the elastic region 21 is inserted into the intermediate member 22, the displaced air can escape from the first connector 25 through the intermediate member 22 between the claw regions 30.

[0078] The claw-shaped region 30 has a shape corresponding to the cylindrical section and is received by the intermediate member 22. Specifically, the corner regions of the cylindrical section abut against the intermediate member 22 without gaps, thereby forming a form-locking connection between the intermediate member and the first connecting member 25, particularly with the claw-shaped region 30 of the first connecting member 25, in both the circumferential and radial directions. Therefore, the intermediate member 22 can only move axially relative to the first connecting member 25, and cannot move radially or rotate circumferentially.

[0079] On the end region of the intermediate member 22 that is axially away from the first connector 25, a tongue region 52 is formed on the intermediate member 22. The tongue region is attached or loosely attached to the end side of the input shaft 20 in an area not covered by the elastic region 21 that protrudes axially toward the first connector 25 on the input shaft 20.

[0080] Although the elastic region 21 is received within the intermediate member 22, the elastic region 21 extending furthest in the radial direction extends smaller than the receiving area of ​​the intermediate member 22 for the elastic region 21. Therefore, the intermediate member 22 can move linearly back and forth in said direction after being fitted onto the elastic region 21 and when the first connecting member 25 is removed.

[0081] The intermediate member 22 is restricted in all directions only when the connector 25 is present, that is, when the connector 25 is inserted into the intermediate member.

[0082] The tongue area 52 prevents the intermediate component 22 from being assembled in an unconfigured manner. This is because the tongue area 52 prevents incorrect assembly when the intermediate component 22 is fitted onto the elastic area 21. The tongue area 52 also prevents rotation of the intermediate component 22 during assembly, particularly a 180° rotation.

[0083] The tongue region 52 is arranged on the side facing the input shaft 20 on the axial end region of the intermediate member 22.

[0084] The tongue region 52 is designed to be flat. The vertical projection of the claw-shaped region 30 into the plane of the tongue region 52 overlaps with the tongue region 52 there. This prevents incorrect assembly.

[0085] The tongue regions 52 connect the first wing region 50 to the lower wing region 51. Furthermore, the tongue regions 52 are arranged parallel and aligned with each other. Each tongue region 52 is connected to a corresponding wall region 54, which is designed to be flat and perpendicular to the corresponding tongue region 52, but the wall region is connected to the corresponding tongue region. This achieves improved stability.

[0086] Each of the two wall regions 54 connects the first wing region 50 to the lower wing region 51.

[0087] Each wing region 51 has an outer cylindrical surface region on its radial outer periphery.

[0088] In the elastic region 21, a blind hole is centrally arranged relative to the rotation axis of the input shaft 20.

[0089] like Figures 12 to 16As shown, the same reducer with the same input shaft 20 and the same intermediate part 22 is combined with another motor. On the rotor shaft 26 of the other motor, a first connecting part 120 of a different shape is fitted instead of the first connecting part 25 mentioned above.

[0090] The first connector 120 has an outer cylindrical periphery, wherein a groove extending in the radial direction is provided on its axial end region facing the reducer, into which the elastic region 21 of the input shaft 20 extends, wherein the intermediate member 22 is fitted onto the elastic region 21 and is thus arranged between the input shaft 20 and the first connector 120.

[0091] By means of the groove on the first connector 120, the area where the first connector 120 is in contact with the intermediate member 22 is as follows: Figures 1 to 11 The first embodiment is shaped in the same way as the first embodiment. However, in the second embodiment, the claw-shaped region 30 of the first embodiment is achieved by a groove formed in the cylindrical first connecting member 120.

[0092] Compared to the first connector 120, the first connector 25 therefore has a shoulder that is arranged on the protrusion of the claw-shaped region 30.

[0093] In other embodiments of the invention, the elastic region 21 extends less far in the radial direction, allowing the intermediate member 22 to be movable. In other embodiments, the elastic region is designed such that the intermediate member 22 is placed on the elastic region 21 without gaps and immovably in the radial direction.

[0094] List of reference numerals in the attached diagram:

[0095] 1. Gearbox housing

[0096] 2. Adapter housing

[0097] 3 motors

[0098] 20 Input Axes

[0099] 21. Flexible Area

[0100] 22 Middleware

[0101] 23 Screws

[0102] 24 screws

[0103] 25 Connecting parts

[0104] 26 Rotor shaft

[0105] 30 Claw-shaped areas

[0106] 40 Tongue area

[0107] 41 First Hole

[0108] 42 Second hole

[0109] 43 Third hole

[0110] 50 First Wing Area

[0111] 51. Wing area below

[0112] 52 Tongue area

[0113] 53 Stopping area

[0114] 54 Wall Area

[0115] 120 Connector

[0116] 121 Screw.

Claims

1. A drive device comprising a motor, a reducer, and an adapter housing disposed between the motor and the reducer. The rotor shaft of the motor is connected to a first connecting member, which has a groove into which the elastic region of the input shaft of the reducer extends. An intermediate component is arranged between the first connecting member and the elastic region of the input shaft. in, The groove is defined by two claw-shaped regions of the first connector, and the groove is arranged between the two claw-shaped regions. The intermediate component has a tab-shaped stop area that abuts against the axial end face of the elastic region. The stop area connects the first wing region and the second wing region respectively and abuts against the bottom of the groove. The intermediate component has a first wall region, which is connected to a first wing region and a second wing region. The first wall region is designed to be flat. The first stop region in the stop region is also designed to be flat. The first wall region is perpendicular to the first stop region. The first wall region is located between the elastic region and the first claw-shaped region.

2. The driving device according to claim 1, Its features are, The intermediate component is made of a material softer than the input shaft and the first connector. The intermediate component is made of plastic, while the input shaft is made of metal, and the first connector is made of metal.

3. The driving device according to claim 2, characterized in that, The input shaft is made of steel, and / or the first coupling is made of steel.

4. The driving device according to any one of claims 1 to 3, Its features are, The elastic region protrudes axially at the axial end region of the input shaft facing the motor. And / or, The elastic region extends in a direction perpendicular to the rotation axis of the input shaft.

5. The driving device according to claim 4, characterized in that, The elastic region extends in the radial direction.

6. The driving device according to any one of claims 1 to 3, Its features are, The groove extends in a direction perpendicular to the rotation axis of the input shaft. And / or, The slot opening faces the input shaft.

7. The driving device according to claim 6, characterized in that, The groove extends in the radial direction.

8. The driving device according to any one of claims 1 to 3, Its features are, The groove is formed in the basically hollow, complete cylindrical protrusion of the first connector. And / or, The groove is formed in the first connecting member, which is essentially a hollow cylinder.

9. The driving device according to any one of claims 1 to 3, Its features are, Each of the two claw-shaped regions is designed as a cylindrical segment.

10. The driving device according to any one of claims 1 to 3, Its features are, The first connector has a shoulder between the claw-shaped region and the rest of the first connector, that is, it has a diameter abrupt change.

11. The driving device according to claim 8, Its features are, The first connector has a shoulder between the protrusion and the rest of the first connector, that is, it has a diameter abrupt change.

12. The driving device according to any one of claims 1 to 3, Its features are, The first connecting component is connected to the rotor shaft of the motor by force locking. The rotor shaft extends into the axially penetrating cavity of the first connecting member.

13. The driving device according to claim 12, characterized in that, The first connecting piece is connected to the rotor shaft of the motor by a heat shrink fit.

14. The drive device according to any one of claims 1 to 3, Its features are, The adapter housing has radially inwardly projecting tongue regions in the area covered axially by the first connector. Each tongue region has two radially spaced holes that pass through the tongue region axially. These holes are for screws to pass through holes that are radially inward or radially outward. The threaded areas of these screws are screwed into the threaded holes of the motor.

15. The driving device according to claim 14, characterized in that, The holes are also spaced apart from each other in the circumferential direction.

16. The driving device according to claim 14, characterized in that, The threaded sections of these screws are screwed into the threaded holes of the motor's bearing flange.

17. The drive device according to any one of claims 1 to 3, Its features are, The adapter housing is screwed onto the reducer by means of screws that are screwed into threaded holes arranged in the reducer along the axial direction.

18. The drive device according to any one of claims 1 to 3, Its features are, The second wall region is connected to the first wing region and also to the second wing region. The second wall region is designed to be flat, and the second stop region in the stop region is designed to be flat, with the wall region perpendicular to the second stop region.

19. The driving device according to claim 18, Its features are, The first tongue region is connected to the first wing region, and to the second wing region, as well as to the first wall region. The first tongue area is designed to be flat, and is designed to be flat in a manner parallel to the first stop area. And / or, The second tongue region is connected to the first wing region, and also to the second wall region. The second tongue area is designed to be flat, and is designed to be flat in a manner parallel to the first stop area and / or the second stop area.

20. The driving device according to claim 18, Its features are, The elastic region of the input shaft contacts the first stop region and the second stop region on the side away from the motor. The bottom of the groove of the first connecting member contacts the first stop region and the second stop region on the side away from the elastic region.

21. The driving device according to any one of claims 1 to 3, Its features are, The intermediate component is constructed to be longer than the elastic region in the direction of the maximum extension length of the elastic region, so that the intermediate component can move back and forth relative to the elastic region when the first connector is removed.

22. The driving device according to claim 19, Its features are, The first tongue area rests against the axial end side of the input shaft, or is adjacent to the axial end side of the input shaft with a gap.

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