Arrangement for an electric motor and method for producing an arrangement

Abstract

The invention relates to an arrangement (12) for an electric motor (10) with at least one electronic built-in component (16) on an end shield (22) of the electric motor (10), wherein a first plug component (24) is formed on the end shield (22) and corresponds with a second plug component (26) on the built-in component (16), wherein the first plug component (24) is electrically coupled to a connection component (30) formed on an outer side (28) of the end shield (22). The invention further relates to a method for producing an arrangement (12).

Description

[0001] Description

[0002] Arrangement for an electric motor and method for producing an arrangement

[0003] The invention relates to an arrangement for an electric motor with at least one electronic component mounted on a bearing plate of the electric motor. Furthermore, the invention relates to a corresponding manufacturing method for producing such an arrangement.

[0004] DE 10 2020 204 856 A1 relates to a motor housing for an electric motor of a motor vehicle, comprising a sleeve-like housing shell for radially enclosing a stator and / or rotor of the electric motor and a plate-like housing cover arranged on the end face of the housing shell as an axial motor cover, wherein the housing shell and / or the housing cover are designed as an injection-molded part.

[0005] A shaft support system for an electric motor of the type comprising a housing, a rotor and a stator provided with a plurality of pole pieces having a winding and connecting terminals connected to the winding of the pole pieces is disclosed in EP 2 160 819 B1.

[0006] US 2022 / 021268 A1 relates to a motor device comprising a bracket, a terminal assembly, a sensor, a stator and a rotor.

[0007] In so-called permanent magnet electric motors, spring-applied brakes or permanent magnet brakes are usually connected to the power supply via two connecting cables that are contacted at the brake coil. The connecting cables on the brakes and on the opposite side, in particular from motor connectors or the so-called customer connection cable, are usually flexible cables that cannot be contacted during automatic assembly. The laying and contacting of the flexible brake connection cables, including the necessary sealing plugs (for example, to protect the sensor compartment from brake abrasion) for the cable feedthrough in the bearing shield, has so far been done manually, for example using so-called butt connectors for contacting.This is a manual crimping process in which both cable ends—from the brake side and the motor connector side or the free customer connection cable—are inserted into an insulated crimp sleeve and then crimped with special pliers. Since this type of contact carries the risk of individual strands protruding, an insulating sleeve is also pushed over the butt connectors and secured with a cable tie. Furthermore, the reproducibility of the quality of the crimp connection is subject to certain fluctuations due to the manual process.

[0008] The object of the present invention is to create an arrangement and a method by means of which an automated installation of an installation component of the electric motor can be realized.

[0009] This object is achieved by an arrangement and by a method for producing an arrangement according to the independent patent claims. Advantageous embodiments are specified in the subclaims.

[0010] One aspect of the invention relates to an arrangement for an electric motor with at least one electronic built-in component on a bearing plate of the electric motor.

[0011] It is provided that a first connector component is formed on a bearing plate of the arrangement, which corresponds to a second connector component on the built-in component, wherein the first connector component is electrically coupled to a connecting component formed on an outer side of the bearing plate. The electric motor is preferably designed as a servomotor.

[0012] In particular, the two connector components make it possible to create an arrangement which enables automated coupling of the built-in component to the bearing shield. This eliminates the need for a manual process and thus overcomes the disadvantages of the prior art. In particular, this reduces the assembly effort in final assembly, among other things, as crimp connections are no longer required. Furthermore, the elimination of the manual crimping process reduces the potential for errors in electrical contact. Furthermore, automatic assembly with contacting of the built-in component is made possible. The universal connector components can be used across multiple motor series. Furthermore, a combination of an end shield and built-in component design with different installation variants can be realized.A sealing plug to protect the sensor chamber from brake abrasion can also be omitted, particularly through the use of the plug component.

[0013] According to an advantageous embodiment, the built-in component is designed as an electrical sensor for the electric motor. For example, the connecting component can then be designed as a supply line and a control line for the electrical sensor. This enables automated operation of the electrical sensor in a housing of the electric motor or on the bearing plate.

[0014] A further advantageous embodiment provides that the built-in component is designed as an electric brake of the electric motor. In particular, an electric brake of the electric motor can thus be automatically coupled as a built-in component to the connecting component. This enables simple assembly of the brake of the electric motor. It is also advantageous if a coil body of the brake is coupled to a first end of the coil body and a second end of the coil body to the second plug component. In particular, the brake can thus be coupled to the plug component with a positive pole and a negative pole. The plug component can then, in turn, receive a corresponding voltage from the connecting component, so that the brake can be controlled accordingly. This makes it possible to supply the brake with current in a simple manner.

[0015] It has also proven advantageous how the second plug component is formed within a radial extension of the brake. In particular, the brake has a so-called brake base body. The brake base body is essentially round. In particular, the plug component is then located essentially within this round extension of the brake. In particular, this makes it possible that the second plug body is already arranged on the brake body, whereby the brake can be arranged in the housing in a space-saving manner.

[0016] It is also advantageous if the first end and the second end are coupled directly to the coil body. This means in particular that there are no intermediate lines between the first end and the second end, in particular between the coil body and the second plug component. For example, the plug component and the coil body can be contacted with one another via electrical connections, for example soldered connections or welded connections. In other words, in this exemplary embodiment, an intermediate line is provided between the coil body and the plug component. This enables in particular a direct connection of the coil body to the connecting component. The arrangement can therefore be provided in a simple yet reliable manner. It has also proven advantageous if the second plug component is formed outside a radial extension of the brake.In particular, the second connector component is formed on the outside of the brake base body. A screwed-on plastic part can then be designed directly as a connector housing for accommodating contact pins, or it can be designed as a holder for a suitable catalog connector, which is attached, for example, by snapping or locking / positively locking. This allows the second connector component to be easily arranged on the brake base body without having to make any corresponding modifications to the brake base body.

[0017] In a further advantageous embodiment, it is provided that the second connector component is coupled to a coil body of the brake via at least two crimped cables. In particular, for example, the corresponding contact pins in the brake-side connector housing, in other words the second connector component, can be contacted via crimp connections on the cables of the brake connected to the two coil connections. The connection component can therefore either be automatically contacted with the bearing shield assembly via a pre-assembled mating connector, as is already the case, or the pre-assembled mating connector or the first connector component on the customer connection side can simply be plugged in manually. This variant enables brake connections for partial automation, since there are no longer any pliable cables on the automatically mountable rotor with brake.

[0018] It is also advantageous if the brake is designed as a parking brake for the motor. In other words, it can be provided that when the electric motor is not supplied with power, the parking brake brakes the axle accordingly, so that the axle is held in a fixed position when there is no power. It is also advantageous if the brake is designed as a working current or quiescent current operated brake for the electric motor. In particular with the electrically operated brake, for example, the brake remains released when voltage is applied and the so-called quiescent current flows. In the event of a power failure, wire breakage or targeted actuation, the function takes effect when the brake engages. The electric motor can therefore be operated safely.

[0019] Furthermore, it has proven advantageous if the second connector component is designed with at least two cutting contacts. Based on the cutting contacts, a simple coupling process between the first connector component and the second connector component can thus be realized.

[0020] It has also proven advantageous if the first plug component is larger than the second plug component, so that a buffer area is formed for plugging in. In particular, the second plug component can have blade contacts that are elongated in the radial direction, in particular so-called knife contacts, in order to be able to combine and contact different brake sizes in conjunction with a single bearing plate variant. The second plug component can then be formed on the brake in different radial positions. Different brakes or built-in components can therefore be contacted with the first plug component, whereby, for example, only one variant of the bearing plate can be provided with a variant of the first plug component in order to be able to couple a large number of different built-in components.

[0021] It is also advantageous if the bearing plate has a feedthrough, wherein the first connector component is passed through the feedthrough. The first connector component can be designed such that it essentially seals the feedthrough. This allows, for example, corresponding components to be installed behind the bearing plate, such as encoder components, which are protected from brake wear because the feedthrough is sealed accordingly.

[0022] A further aspect of the invention relates to an electric motor with an arrangement according to the preceding aspect.

[0023] Furthermore, the invention also relates to a method for producing an arrangement according to the preceding aspect. A bearing plate having a first plug component is provided. The first plug component is coupled to a connecting component formed on an outer side of the bearing plate. An electrical installation component having a second plug component is provided, which corresponds to the first plug component. The bearing plate is automatically coupled to the installation component via the plug components.

[0024] This allows for an automated process for connecting the built-in component to the bearing plate. In particular, it can be provided, for example, that the bearing plate is optically positioned and then the coupling is carried out accordingly.

[0025] It may also be provided that guides are provided corresponding to the guides on the bearing plate or on the connector components, enabling secure coupling. For example, this can be provided in the form of a so-called poka-yoke connection.

[0026] Advantageous embodiments of the arrangement are to be regarded as advantageous embodiments of the electric motor and of the method. The arrangement and the electric motor in particular have material features in order to be able to carry out corresponding method steps. Unless expressly stated otherwise, a connection between two electrical or electronic components can be understood in such a way that an electrical connection exists between the components or can be established by actuating one or more switching elements (of the circuit / arrangement / device...). In particular, the components can be connected to one another directly or indirectly, unless stated otherwise.A direct connection can be understood as meaning that apart from the optional one or more switching elements, no further electrical or electronic components are arranged between the components, while an indirect connection can be understood as meaning that in addition to the optional one or more switching elements, one or more further electrical or electronic components, such as resistors, capacitors, coils and so on, are arranged between the components.

[0027] For use cases or application situations that may arise during the method and which are not explicitly described here, it may be provided that, in accordance with the method, an error message and / or a request to enter user feedback is issued and / or a standard setting and / or a predetermined initial state is set.

[0028] Regardless of the grammatical gender of a particular term, persons with male, female or other gender identity are included.

[0029] Further features of the invention emerge from the claims, the figures and the description of the figures. The features and combinations of features mentioned above in the description as well as the features and combinations of features mentioned below in the description of the figures and / or shown in the figures can be encompassed by the invention not only in the respectively specified combination, but also in other combinations. In particular, the invention can also encompass embodiments and combinations of features which do not have all the features of an originally formulated claim. Furthermore, the invention can encompass embodiments and combinations of features which go beyond the combinations of features set out in the references to the claims or deviate from them.

[0030] Showing:

[0031] FIG 1 is a schematic sectional view of an embodiment of an electric motor with an embodiment of an arrangement;

[0032] FIG 2 is a schematic perspective view of an embodiment of a built-in component;

[0033] FIG 3 is a schematic perspective view of an embodiment of a bearing plate;

[0034] FIG 4 shows a further schematic perspective view of an embodiment of a bearing plate;

[0035] FIG 5 shows a further schematic sectional view of an embodiment of an electric motor with an embodiment of an arrangement;

[0036] FIG 6 shows a further schematic sectional view of an embodiment of a built-in component; and

[0037] FIG 7 shows a further schematic sectional view of an embodiment of an electric motor with an embodiment of an arrangement.

[0038] The invention is explained in more detail below with reference to specific exemplary embodiments and associated schematic drawings. In the figures, identical or functionally equivalent elements may be provided with the same reference numerals. The description of identical or functionally equivalent elements is not necessarily repeated for different figures.

[0039] FIG. 1 shows a schematic sectional view according to an embodiment of an electric motor 10 with an embodiment of an arrangement 12. In particular, the electric motor 10 is shown only in half, in particular this is illustrated with reference to a rotational axis 14.

[0040] The assembly 12 has at least one built-in component 16, in this case in particular in the form of a brake 18 for the electric motor 10. The built-in component 16 is in turn formed on a bearing plate 22 of the electric motor 10.

[0041] A first plug component 24 is provided on the bearing plate 22 of the arrangement 12, which corresponds to a second plug component 26 on the built-in component 16, wherein the first plug component 24 is electrically coupled to a connecting component 30 formed on an outer side 28 of the bearing plate 22. In the present case, in particular an electrical line 32 is provided, which is crimped, for example. In particular, however, the connecting component 30 and the first plug component 24 have at least two electrical lines, for example to provide power for the built-in component 16.

[0042] In FIG. 1, the built-in component 16 is shown in particular as a brake 18. Alternatively, the built-in component 16 can also be designed, for example, as a sensor for the electric motor 10.

[0043] FIG 2 shows a schematic perspective view according to an embodiment of the built-in component 16, in particular designed as a brake 18. In the following exemplary embodiment, in particular a coil body (not shown) of the brake 18 is coupled to a first end of the coil body and a second end of the coil body to the second plug component 26. The second plug component 26 is in particular within a radial extension of the brake 18, in particular within a radial extension of a brake base body of the brake 18. In particular, it is provided that the first end and the second end of the coil body are coupled directly to the second plug component.

[0044] 3 shows a schematic perspective view of the bearing plate 22 with the first plug component 24 and the connecting component 30. In particular, FIG. 3 shows the bearing plate 22 corresponding to FIG. 2. The coil body in the brake 18 can be designed with a molded-on second plug component 26, in which the two ends of the coil winding are contacted, for example with insulation displacement contacts. The insulation displacement contacts have a clamping area into which a mating contact can be pushed with a certain amount of force. This mating contact is in turn formed on the bearing plate 22. The mating connector, which contains the two flat mating contacts and can also be referred to as so-called blade contacts, is in turn pre-assembled in the bearing plate 22. The blade contacts with electrically contacted, for example crimped, connecting line are already directly connected to the connecting component 30 or 32 pre-assembled on the bearing plate 22.the so-called customer connection cable. The connecting component 30 can be provided in the form of a connector or as a cable harness. The brake 18, which is pre-mounted on the motor rotor, for example, is positioned such that, during axial assembly, the second connector component 26 engages directly with the first connector component 24 on the bearing plate 22, thus making contact with the brake 18.

[0045] The brake 18 can preferably be designed as a parking brake for the electric motor 10. Alternatively or additionally, the brake 18 can be designed as a working current or closed-circuit current operated brake 18 for the electric motor 10. FIG. 4 shows a further schematic perspective view of the bearing plate 22. In particular, the present exemplary embodiment shows that the first plug component 24 is larger than the second plug component 26, so that a buffer area is formed for plugging in. In particular, FIG. 4 therefore shows a further exemplary embodiment for the plug components 24, 26. In particular, the first plug component 24 is elongated in the radial direction and has the blade contacts in order to be able to combine and contact different brake sizes in conjunction with a bearing plate variant. The second plug component 26 on the brake 18 can be in different radial positions.

[0046] FIG. 5 shows a schematic sectional view of the arrangement 12 with a bearing plate according to FIG. 4. In particular, the so-called blade contacts 34 are shown accordingly.

[0047] FIG. 6 shows a further schematic perspective view of an embodiment of the brake 18. In the following exemplary embodiment, it is shown in particular that the second plug component 26 is formed outside a radial extension of the brake 18. The second plug component 26 can be coupled to the coil body of the brake 18 via at least two crimped lines 36.

[0048] FIG 7 shows a schematic sectional view according to an embodiment of the electric motor 10 with an embodiment of the arrangement 12, in particular with a brake 18 according to FIG 6. In particular, it is shown here that the second plug component 26 is designed as a plug-on plug on the outside of the brake base body of the brake 18. In this case, a fixed component 38 can be designed directly as a plug housing for receiving the contact pins, or it can be designed as a holder for a suitable catalog plug, which is fastened, for example, by snapping in or locking / positively locking. The corresponding contact pins in the brake-side plug housing are contacted via crimp connections on the cables of the brake 18 connected to the two coil connections.The connecting component 30 can thus either be designed as shown in the previous embodiments and automatically contacted with the bearing shield assembly via a pre-assembled mating connector, or the pre-assembled mating connector on the customer connection side can simply be plugged in manually. This variant enables brake connections for automation, since the automatically mountable rotor, the brake 18, no longer has any flexible cables.

[0049] FIG 7 further shows that the bearing plate 22 has a leadthrough 40, wherein the first plug component 24 is led through the leadthrough 40, and in particular the leadthrough 40 can be sealed by additional elements so that, for example, a sensor can be installed on the side of the bearing plate 22 facing away from the installation component 16, and, for example, no brake wear is recorded on the sensor side.

[0050] A further aspect of the invention also relates to a method for producing the arrangement 12. In this case, it is provided that the bearing plate 22 is provided with the first plug component 24. The first plug component 24 is coupled to a connecting component 30 formed on the outer side 28 of the bearing plate 22. The electrical installation component 16 is provided with the second plug component 26, wherein the second plug component 26 corresponds to the first plug component 24. The bearing plate 22 is then automatically coupled to the installation component 16 via the plug components 24, 26. For example, an optical positioning of the bearing plate 22 relative to the brake 18 can be carried out here.

Claims

Patent claims 1. Arrangement (12) for an electric motor (10) with at least one electronic built-in component (16) in a bearing plate (22) of the electric motor (10), characterized in that a first plug component (24) is formed on the bearing plate (22), which corresponds to a second plug component (26) on the built-in component (16), wherein the first plug component (24) is electrically coupled to a connecting component (30) formed on an outer side (28) of the bearing plate (22).

2. Arrangement (12) according to claim 1, characterized in that the built-in component (16) is designed as an electrical sensor of the electric motor (10).

3. Arrangement (12) according to one of claims 1 or 2, characterized in that the built-in component (16) is designed as an electric brake (18) of the electric motor (10).

4. Arrangement (12) according to claim 3, characterized in that a coil body of the brake (18) is coupled to a first end of the coil body and a second end of the coil body is coupled to the second plug component (26).

5. Arrangement (12) according to claim 3 or 4, characterized in that the second plug component (26) is formed within a radial extension of the brake (18).

6. Arrangement (12) according to claim 5, characterized in that the first end and the second end are directly coupled to the second connector component (26).

7. Arrangement (12) according to claim 3 or 4, characterized in that the second plug component (26) is formed outside a radial extension of the brake (18).

8. Arrangement (12) according to claim 7, characterized in that the second plug component (26) is coupled to a coil body of the brake (18) via at least two crimped lines (36).

9. Arrangement (12) according to one of claims 3 to 8, characterized in that the brake (18) is designed as a parking brake for the electric motor (10).

10. Arrangement (12) according to one of claims 3 to 9, characterized in that the brake (18) is designed as a working current or quiescent current operated brake (18) for the electric motor (10).

11. Arrangement (12) according to one of the preceding claims, characterized in that the second plug component (26) is formed with at least two cutting contacts (34).

12. Arrangement (12) according to one of the preceding claims, characterized in that the first plug component (24) is larger than the second plug component (26), so that a buffer area for plugging in is formed.

13. Arrangement (12) according to one of the preceding claims, characterized in that the first plug component (24) is coupled to the connecting component (30) via at least two crimped electrical lines (32).

14. Arrangement (12) according to one of the preceding claims, characterized in that the bearing plate (22) has a passage (40), wherein the first plug component (24) is passed through the passage (40).

15. A method for producing an arrangement (12) according to one of claims 1 to 14, comprising the steps: - Providing a bearing plate (22) with a first connector component (24); - coupling the first plug component (24) to a connecting component (30) formed on an outer side (28) of the bearing plate (22); - providing an electrical installation component (16) of the arrangement (10) with a second plug component (26) which corresponds to the first plug component (24); and - Automated coupling of the bearing plate (22) with the installation components (16) via the plug components (24, 26).

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