Drive unit for a vehicle seat adjustment device

Abstract

The proposed solution relates to a drive unit (1) for an adjustment device (2) for a vehicle seat (3), comprising: a motor support (10A-10C), a motor unit (11) mounted on the motor support (10A-10C) with motor electronics (110) and an electronics unit (12A-12C mounted on the motor support (10A-10C) which is in communicative connection with the motor electronics (110).

Description

[0001] The proposed solution concerns a drive unit for an adjustment device, a corresponding adjustment device for a vehicle seat and a corresponding vehicle seat.

[0002] Vehicle seats are typically adjustable, e.g. to enable different seat users to achieve a comfortable seating position and to be adapted to different space conditions. For example, a vehicle seat can be mounted in a vehicle so that it can be adjusted lengthwise by means of a longitudinal adjustment device in order to enable different seating positions along the vehicle's longitudinal axis, a vehicle seat can be adjustable by means of a height adjustment device in order to set a seat height, and in a vehicle seat the inclination of a backrest relative to a seat part can be adjustable, to name just a few examples. One or more manual or motor drive systems can be provided to make such adjustments. Motor drive systems can make the adjustments simple, e.g. by pressing buttons, or even completely automatically.

[0003] However, such comfortable adjustability of a vehicle seat with multiple motorized adjustment devices often requires a complex vehicle seat design. This is due to the adjustment devices and their drive units, each of which comprises a number of individual parts.

[0004] EP 4 005 865 A1 describes a drive unit for a vehicle seat, which has a cross member on which a motor with its motor electronics is mounted. This allows for a compact design of the drive unit, but the overall structure of the vehicle seat remains complex.

[0005] The task is to provide an improved drive unit for an adjustment device.

[0006] This object is achieved by an article having the features of claim 1.

[0007] According to this, a drive unit for an adjustment device (in particular for a vehicle seat) comprises a motor support, a motor unit mounted on the motor support with motor electronics and an electronics unit also mounted on the motor support, which is in communicative connection with the motor electronics.

[0008] This is based on the realization that the motor mount can accommodate not only the motor electronics, but, counterintuitively, also the additional electronics unit, which communicates with the engine electronics and can also perform additional functions. For example, the electronics unit is a seat control unit, which, in addition to the motor unit of the drive unit, can communicate with other motor units of other adjustment devices. Furthermore, the electronics unit can control other functions, particularly of the vehicle seat, such as seat heating, ventilation, or the like. Until now, such an electronics unit was often attached to a vehicle seat structure using its own mount. The individual components were manufactured and assembled separately.The proposed solution eliminates the need for an additional support and instead uses the drive unit's motor support as the support for the higher-level electronics unit. This eliminates the need for a separate support and simplifies assembly. This enables an improved drive unit for an adjustment device.

[0009] The motor unit can include a brushless motor. The motor unit can therefore be a brushless DC motor, or BLDC motor. BLDC motors enable particularly high precision in a compact design.

[0010] The motor is designed, for example, as a synchronous motor, in particular as a three-phase synchronous motor. The motor comprises a stator and a rotor that can rotate relative to it, e.g., a permanent magnet rotor.

[0011] The motor electronics, for example, include an inverter. This allows the permanent magnet, brushless motor to operate precisely. The motor electronics can easily be powered by a DC voltage available in the vehicle, for example.

[0012] For example, the motor electronics include a control unit configured to receive control commands from the electronics unit via the communicative connection and, in response to these control commands, to supply control signals to the inverter. This allows the motor to be operated precisely.

[0013] The electronics unit is arranged at a distance from the engine electronics, for example, in spaced-apart housings. This allows for easy assembly of standardized modules and thus facilitates the production of various variants in large quantities.

[0014] The electronics unit can have a (first) interface and can have a second interface. The electronics unit can be communicatively connected to the motor electronics and / or to another motor unit and / or to a group of other motor units via the first interface and / or the second interface. The electronics unit can be configured to output control commands for another motor unit (and / or a group of other motor units) via the second interface. The other motor unit can be arranged at a distance from the drive unit. The electronics unit can thus perform multiple tasks.

[0015] Alternatively, the electronics unit can have an interface (e.g., only an output interface) and be communicatively connected via this interface to the engine electronics and, in one embodiment, also to one or more additional motor units. The electronics unit can be configured to output control commands for the engine electronics and for the one or more additional motor units via this interface. The interface(s) can each have a plug connection.

[0016] The electronic unit can further comprise a command interface. The electronic unit can be configured to receive control commands via the command interface. The electronic unit can therefore comprise both an input for control commands and one or more outputs for control commands. For example, the electronic unit can communicate with a central vehicle control unit, and several or all of the central vehicle control unit's control commands relating to the vehicle seat can be processed via the electronic unit.

[0017] The electronics unit can be configured to receive control commands for more than one motor unit. The electronics unit can also be configured to communicate the control commands to the respective motor units.

[0018] The electronics unit can include a connector part. The connector part can be plugged into or connected to a connector part of a cable. The electronics unit communicates with the engine electronics, for example, via the cable. This enables quick and easy connection and the use of standard components.

[0019] The motor mount can at least partially enclose the electronics unit. Thus, the motor mount fulfills a dual function by supporting and enclosing the electronics unit. This allows for protected storage of the electronics unit.

[0020] Furthermore, the electronics unit can comprise a housing and an electronics assembly, with the housing partially or completely enclosing the electronics assembly and being attached to the motor mount. This allows for easy installation on the motor mount.

[0021] Alternatively, the motor mount can form at least part of a housing of the electronics unit, in which an electronic module of the electronics unit is enclosed. Thus, the motor mount serves an additional purpose, allowing the number of components to be reduced.

[0022] At least a portion of the housing of the electronics unit may have at least one locking element. The locking element is, for example, locked or can be locked with a counter-locking element of the motor mount. This enables particularly simple assembly.

[0023] According to one aspect, an adjustment device for a vehicle seat is provided, comprising the drive unit according to any of the embodiments described herein. Regarding the advantages, reference is made to the above information.

[0024] The adjustment device can comprise two pairs of floor rails and seat rails, each of which can be mounted or is mounted on a vehicle floor. The vehicle seat is mounted on the seat rails. The seat rails are mounted on the floor rails for longitudinal movement. The engine mount, for example, is attached to the two seat rails.

[0025] According to one aspect, a vehicle seat is provided, comprising the drive unit according to any of the embodiments described herein and / or the adjustment device according to any of the embodiments described herein. Regarding the advantages, reference is again made to the above information.

[0026] The concept underlying the invention will be explained in more detail below with reference to the exemplary embodiments illustrated in the figures. They show: Fig. 1 a vehicle seat with several adjustment devices; Fig. 2 a part of the vehicle seat according to Fig. 1 with a drive unit; Fig. 3A and Fig. 3B a drive unit for the vehicle seat according to Fig. 1; Fig. 4 a further drive unit for the vehicle seat according to Fig. 1; Fig. 5 an electronic unit of the drive unit according to Fig. 3A and Fig. 3B in communicative connection with several motor units and a central control unit; and Fig. 6 the motor unit of the drive unit according to Fig. 2 with an inverter.

[0027] Fig. 1 shows a vehicle seat 3 with a seat part 30 and a backrest 31. The backrest 31 is mounted on the seat part 30 by means of a backrest inclination adjustment device 32 so as to be pivotable about a pivot axis S. For this purpose, the backrest inclination adjustment device 32 comprises a fitting arrangement 321 with, for example, two rotary or locking fittings. The backrest inclination adjustment device 32 further comprises a motor unit 320. The fitting arrangement 321 is adjustable by means of the motor unit 320 in order to set the inclination of the backrest 31 relative to the seat part 30.

[0028] The seat part 30 has a seat height relative to a vehicle floor FB of a vehicle along a vehicle height direction Z. The vehicle seat 2 can be mounted on the vehicle floor FB and according to Fig. 1. The seat part 30 (together with the backrest 31) is adjustable in height by means of a seat height adjustment device 33. For this purpose, the seat height adjustment device 33 has several pivotable pivot arms 331 on which the seat part 30 is supported. The seat height adjustment device 33 further comprises a motor unit 330 (see Fig. 2). The motor unit 330 allows the swivel arms 331 to be pivoted to adjust the seat height.

[0029] Furthermore, the vehicle seat 3 comprises a longitudinal adjustment device 2. The longitudinal adjustment device 2 allows a longitudinal adjustment of the vehicle seat 3 along a vehicle longitudinal direction X. By means of the longitudinal adjustment device 2, the seat part 30 and the backrest 31 can be displaced together along the vehicle longitudinal direction X relative to the vehicle floor FB. The vehicle longitudinal direction X is aligned perpendicular to the vehicle height direction Z. The longitudinal adjustment device 2 comprises two pairs, each consisting of a rail which can be fixed to the vehicle floor FB and is fixed in the example shown, which can also be referred to as floor rail 20, and a seat rail 21 which is displaceably mounted thereon along the vehicle longitudinal direction X. The remaining vehicle seat 3 can be mounted on the seat rails 21 and is mounted in the example shown. The two pairs, of which in the view of the Fig. 1 only one is visible, are spaced apart from each other along a vehicle transverse direction Y. The vehicle transverse direction Y is aligned perpendicular to the vehicle longitudinal direction X and perpendicular to the vehicle height direction Z.

[0030] The adjustment devices 32, 33, 2 shown are exemplary; the vehicle seat 3 can comprise one, several, or all of the adjustment devices 32, 33, 2 and / or additional adjustment devices not shown. The adjustment devices 32, 33, 2 are each motor-adjustable.

[0031] Fig. 2 shows a floor rail 20 and a seat rail 21 of the longitudinal adjustment device 2 slidably mounted thereon and the mounting of the remaining vehicle seat 2 thereon. Furthermore, Fig. 2 a drive unit 1 of one of the adjustment devices of the vehicle seat 2, namely in this case, for example, the longitudinal adjustment device.

[0032] The drive unit 1 is arranged under the seat part 30. The drive unit 1 comprises a motor mount 10A, a motor unit 11, and an electronics unit 12A.

[0033] The engine mount 10A extends between the two pairs of rails of the longitudinal adjustment device 2. In the present case, the engine mount 10A has a cross member 101 which extends along the vehicle transverse direction Y. The engine mount 10A has a first fastening section 102 and a second fastening section. The first fastening section 102 is, as shown in Fig. 2, attached to one seat rail 21. The second attachment section is (in Fig. 2 not visible) is attached to the other seat rail 21.

[0034] The motor unit 11 mounted on the motor mount 10A is configured to drive a shaft extending along the cross member 101, which in turn drives (in particular on both sides) a spindle nut that can be screwed along a spindle mounted on the floor rail 20. Activation of the motor unit 11 thus causes an adjustment of the vehicle seat 3 relative to the vehicle floor FB.

[0035] The motor unit 11 here forms a BLDC motor. The motor unit 11 comprises motor electronics 110, as described below with reference to Fig. 6 will be explained in detail, and a motor 111 controlled or regulated by the motor electronics 110 (see Fig. 6).

[0036] The electronic unit 12A mounted on the motor mount 10A is in communicative connection with the engine electronics 110, in the example shown according to Fig. 2 via a 13A cable.

[0037] The motor mount 10A has a motor mount 104 and an electronics mount 105. The electronics mount 105 is offset from the motor mount 104. The motor unit 11 is inserted into the motor mount 104. The electronics unit 12A is inserted into the electronics mount 105. In this case, the motor unit 11 is inserted into the motor mount 104 from one side of the motor mount 10A (from above), and the electronics unit 12A is inserted into the electronics mount 105 from the opposite side (from below).

[0038] In this case, the electronics unit 12A is attached to the motor mount 10A by means of a snap-in connection (or clip connection). For this purpose, a housing 122A of the electronics unit 12A has (at least) one snap-in element 124, and the motor mount 10A has a matching counter-snap-in element 100 on the electronics receptacle 105. In this case, the counter-snap-in element 100 is designed in the form of a snap-in hook that engages in the snap-in element 124 of the electronics unit 12A in the form of a groove. This enables quick yet stable assembly.

[0039] The motor mount 10A partially encloses the electronics unit 12A. This securely holds and protects the electronics unit 12A. The electronics unit 12A is housed in its own housing and forms a self-contained, pre-assembled assembly. This makes the electronics unit 12A easier to transport and well protected.

[0040] The electronics unit 12A is arranged at a distance from the motor electronics 110 on the motor mount 10A. The electronics unit 12A is relatively compact because the motor electronics 110 handles motor control.

[0041] The electronic unit 12A is a seat control unit of the vehicle seat 3. The electronic unit 12A not only controls or regulates the motor unit 11 of the drive unit 1 of the longitudinal adjustment device 2, but also the other motor units 330, 320 of the adjustment devices of the vehicle seat 3. In Fig. 2 shows an example of a further cable 13B, via which the electronics unit 12A communicates with the motor unit 330 of the seat height adjustment device 33. The electronics unit 12A is configured to send control commands to the motor units 11, 320, 330 connected thereto in order to adjust the respective adjustment device. Instead of the further cable 13B (or in addition), a linear cable harness can also be provided, as will be described further below.

[0042] Furthermore, the electronic unit 12A is connected via a further cable 13C to a central control unit 4 not shown here (see e.g. Fig. 5) of the vehicle. The electronics unit 12A receives control commands from the central control unit 4, which it forwards to the respective motor unit 11, 320, 330 or forwards in processed form.

[0043] The Fig. 3A and Fig. 3B illustrate a drive unit 1 which the vehicle seat 3 may alternatively comprise.

[0044] The drive unit 1 according to Fig. 3A and Fig. 3B is constructed similarly to the drive unit 1 according to Fig. 2.

[0045] Fig. 3A and Fig. 3B show both the first fastening section 102 and the previously explained, in Fig. 2 but not shown second fastening section 103 of the engine mount 10B. Both fastening sections 102, 103 are mounted on the seat rails 21 in the assembled state, as already explained.

[0046] According to Fig. 3A and Fig. 3B, the motor mount 104 is arranged adjacent to the electronics mount 105. However, it should be noted that the motor unit 11 and the electronics unit 12B are separate units and can be mounted independently of each other on the motor mount 10B. The housing 122B of the electronics unit 12B is separate from the housing 117 of the motor unit 11. The electronics unit 12B comprises the housing 122B and an electronics assembly 123 (see, for example, Fig. 4), wherein the housing 122B encloses the electronics assembly 123 and is attached to the motor mount 10B.

[0047] The electronics unit 12B is arranged at one end of the motor mount 10B, adjacent to the first mounting portion 102. The motor unit 11 is arranged between the electronics unit 12B and the second mounting portion 103 (at the other end of the motor mount 10B). The electronics unit 12B is thus arranged between the first mounting portion and the motor unit 11.

[0048] The cross member 101 is narrower than the area of the motor mount 10B with the motor mount 104 and the electronics mount.

[0049] The motor unit 11 further comprises a gear 112, via which it is operatively connected to the shaft already mentioned.

[0050] According to Fig. 3A and Fig. 3B, the electronics unit 12B includes a connector part 127, which is plugged into a connector part 130 of a cable 13A, via which the electronics unit 12B is communicatively connected to the engine electronics 110. This significantly simplifies assembly. Additional cables 13B, 13C are also connected to the electronics unit 12B via connectors 120, 130.

[0051] Fig. 4 illustrates a further drive unit 1, which the vehicle seat 3 can alternatively comprise. The drive unit 1 according to Fig. 4 is constructed similarly to the drive unit 1 according to Fig. 2.

[0052] The motor unit 11 is mounted with its housing 117 on the motor mount 10C as described above. In contrast, however, the electronics unit 12C has a housing 122C, which is partially formed by the motor mount 10C. Thus, the electronics receptacle 105 forms a recess in which the electronics assembly 123 is arranged. The motor mount 10B thus forms a housing shell for the electronics unit 12C. A further housing part 125 is mounted on the motor mount 10C, in this case by means of snap-in connections.

[0053] Fig. 5 illustrates the communication connections of the described electronic units using the example of the electronic unit 12B according to Fig. 3A and Fig. 3B. The electronics unit 12B has several interfaces. The electronics unit 12B may have more or fewer interfaces than shown. The interfaces include, for example, the plug connections as described above.

[0054] Data can be exchanged unidirectionally or bidirectionally via the communicative connections.

[0055] According to Fig. 5, the electronics unit 12B has an interface 120 via which it communicates with the motor unit 11, in this case by means of a linear cable harness. The linear cable harness forms a daisy chain. The linear cable harness is laid without interruption, for example, from the electronics unit 12B through several motor units and / or motor electronics (e.g. for longitudinal adjustment, from there to height adjustment and from there to backrest angle adjustment or in a different sequence). A BUS connector is used, which makes it possible to contact the motor units and / or motor electronics with a continuous cable. The cable is contacted in each case by an IDC (insulation displacement connection) on the connector and laid through the connector housing.When using the BLDC motor equipped with the 12B electronics unit, (only) three wires in total are sufficient (two wires for the power supply + / - and one wire for a control signal, e.g., LIN signal). Star wiring typically requires four wires per motor (power supply + / - and HAL + / -). At the same time, this design also reduces the need for electrical interfaces on the 12B electronics unit, thus saving space and costs. The linear wiring harness can be flexibly expanded.

[0056] According to Fig. 5, the cable is laid from the interface 120 to the motor unit 11 and from there to the motor unit 320 (and optionally from there to one or more further motor and / or other control units.

[0057] Alternatively, the interface 120 is a first interface and the electronics unit 12B further comprises a second interface 121, via which it is communicatively connected to a further motor unit, in particular a motor unit spaced apart from the motor support 10B, here, for example, the motor unit 320 of the backrest inclination adjustment device 32.

[0058] Furthermore, the electronics unit 12B is communicatively connected to the central control unit 4 (of the vehicle) via a command interface 126. The central control unit 4 is arranged at a distance from the vehicle seat 3.

[0059] The electronics unit 12B is configured to receive control commands from the central control unit 4 via the command interface 126. The electronics unit 12B is configured to receive control commands for more than one motor unit 11, 320.

[0060] The electronics unit 12B is further configured to output control commands for the motor units 11, 320 via the first and second interfaces 120, 121. These control commands are based on the control commands received via the command interface 126.

[0061] The electronic unit 12B serves as an interface between the central control unit 4 and one or more motor units 11, 320 of the vehicle seat 3.

[0062] The electronics unit 12B monitors (and manages) the total power consumption and can also protect the system. The electronics unit 12B thus handles energy management for the motor units 11 and 320.

[0063] The electronic unit 12B also controls an overall trajectory of the vehicle seat 3. To this end, it controls a simultaneous operation of the motor units 11, 320.

[0064] The electronics unit 12B can be a LIN master in a LIN bus system.

[0065] The motor electronics 110 implements the control commands from the electronics unit 12B and controls the motor 111 (drive unit). The motor electronics 110 regulates the motor current. Furthermore, the motor electronics 110 regulates the motor speed. The motor electronics 110 can act on the respective requirements and the defined limits through the integrated control and a further integrated current limiter. The motor electronics 110 knows the motor position. The motor electronics 110 informs the electronics unit 12B about the current travel movement and position of the motor 111.

[0066] The engine electronics 110 only requires a power supply and a suitable signal connection (in this case a LIN signal, although other signals are also conceivable, such as CAN, etc.).

[0067] Fig.Figure 6 shows an example of a possible embodiment of the motor unit 11. The motor unit 11 is designed as a brushless direct current (BLDC) motor. The motor unit 11 includes the aforementioned motor electronics 110 and the motor 111. The motor 111 is a brushless motor. Specifically, the motor 111 is designed as a synchronous motor, namely a three-phase synchronous motor.

[0068] The motor 111 comprises a stator 116 and a rotor 115 which can rotate relative to the stator 116. For example, the motor 111 is illustrated here as an internal rotor; a design as an external rotor is also conceivable. Several coils are connected to the stator 116 on three phases U, V, W (a different number of phases can also be provided here) of a three-phase alternating voltage. The coils are connected to a common star point. Applying the alternating voltage causes a current to flow and thus a rotation of the rotor 115, to which one or more permanent magnets are attached. The coils are illustrated only schematically here. For example, three coils are provided for each phase U, V, W, but a smaller or larger number can also be provided.

[0069] The motor electronics 110 includes an inverter 113 and a control unit 114. The inverter 113 is connected to the coils of the motor unit 11 and provides the three-phase alternating voltage. The inverter 113 is connected to the control unit 114 and is controlled and / or regulated by the control unit 114.

[0070] The control unit 114 is configured to receive control commands from the electronic unit 12A-12C via the communicative connection and to supply control signals to the inverter 113 in response to these control commands.

[0071] The inverter 113 has several switches S1-S6, here six, each of which is designed as a semiconductor switch. Each of the three coil windings for each of the phases U, V, and W is connected between two respective switches S1 and S2, S3 and S4, or S5 and S6. Of the two respective switches S1 and S2, S3 and S4, or S5 and S6, one is connected to a terminal (+) and the other to another terminal (-) of a DC voltage supply. For example, +12 V and 0 V are present at the terminals of the DC voltage supply.

[0072] The control unit 114 controls the states of the switches S1-S6 (selectively opens and closes them). Furthermore, the control unit 114 receives angle signals from one or more rotation angle sensors indicative of the rotation angle of the rotor 115A relative to the stator 116.

[0073] The control unit 114 receives control commands from the electronics unit 12A-12C. The control commands include, for example, a target position, a target speed, an adjustment direction, and / or a distance to be traveled along the adjustment path. The control commands can be based, for example, on user input or automatically generated and transmitted to the control unit 114. The control unit 114 interprets these control commands and operates the motor 111 accordingly.

[0074] For example, the control unit 114 controls the motor 111 based on the angle signals in order to execute the control commands. Specifically, the control in this case is based on sinusoidal commutation. To do this, the control unit 114 applies PWM (pulse width modulation) signals to the inverter 113, resulting in sinusoidal phase currents U, V, and W that are phase-shifted by 120°. This enables very smooth and precise operation. The control unit 114 generates a corresponding PWM signal based on the respective control command. The PWM signal drives the inverter 113, causing the rotor 115 to rotate. In a closed control loop, the control unit 114 detects the rotation of the rotor 115 based on the angle signals and adjusts the PWM signal accordingly in the event of a deviation from a target value of the angle of rotation or a value derived therefrom. List of reference symbols 1 drive unit 10A-10C engine mount 100 counter-locking element 101 Cross section 102 first fortification section 103 second fastening section 104 Engine mount 105 Electronics mount 11 Motor unit 110 Engine electronics 111 Engine 112 gearboxes 113 inverters 114 Control unit 115 Rotor 116 Stator 117 housings 12A-12C electronic unit 120 first interface 121 second interface 122A-122C housing 123 Electronic assembly 124 locking element 125 housing part 126 Command interface 127 Connector part 13A-13C cable 130 connector part 2 Longitudinal adjustment device 20 floor rail 21 Seat rail 3 vehicle seat 30 Seat part 31 Backrest 32 Backrest tilt adjustment device 320 engine unit 321 Fitting arrangement 33 Seat height adjustment device 330 engine unit 331 swivel arm 4 central control unit FB vehicle floor S swivel axis S1-S6 switch X Vehicle longitudinal direction Y vehicle transverse direction Z Vehicle height direction QUOTES CONTAINED IN THE DESCRIPTION

[0000] This list of documents submitted by the applicant was generated automatically and is included solely for the convenience of the reader. This list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions. Cited patent literature

[0000] EP 4 005 865 A1

[0004]

Claims

[1] Drive unit (1) for an adjusting device (2) for a vehicle seat (3), comprising: - an engine mount (10A-10C), - a motor unit (11) mounted on the motor support (10A-10C) with motor electronics (110) and - an electronic unit (12A-12C) mounted on the engine mount (10A-10C), which is in communicative connection with the engine electronics (110). [2] Drive unit (1) according to claim 1, characterized by that the motor unit (11) comprises a brushless motor (111). [3] Drive unit (1) according to claim 2, characterized by that the motor (111) is designed as a synchronous motor, in particular as a three-phase synchronous motor, and comprises a stator (116) and a permanently excited rotor (115) rotatable relative thereto. [4] Drive unit (1) according to one of the preceding claims, characterized by that the motor electronics (110) comprises an inverter (113). [5] Drive unit (1) according to claim 4, characterized by that the motor electronics (110) comprises a control unit (114) which is configured to receive control commands from the electronics unit (12A-12C) via the communicative connection and to supply the inverter (113) with control signals in response to these control commands. [6] Drive unit (1) according to one of the preceding claims, characterized by that the electronics unit (12A-12C) is arranged at a distance from the engine electronics (110). [7] Drive unit (1) according to one of the preceding claims, characterized by that the electronics unit (12A-12C) has a first interface (120) and a second interface (121) and is communicatively connected to the motor electronics (110) via the first interface (120) and is configured to output control commands for a further motor unit (320, 330) via the second interface (121). [8] Drive unit (1) according to one of claims 1 to 6, characterized by that the electronics unit (12A-12C) has an interface (120) and is communicatively connected to the motor electronics (110) via the interface (120) and is configured to also output control commands for a further motor unit (320, 330) via the interface (120). [9] Drive unit (1) according to one of the preceding claims, characterized by that the electronics unit (12A-12C) has a command interface (126) and is configured to receive control commands via the command interface (126). [10] Drive unit (1) according to claim 9, characterized by that the electronics unit (12A-12C) is configured to receive control commands for more than one motor unit (11, 320, 330). [11] Drive unit (1) according to one of the preceding claims, characterized bythat the electronics unit (12B) comprises a connector part (127) which is plug-connected to a connector part (130) of a cable (13A), via which the electronics unit (12B) is communicatively connected to the engine electronics (110). [12] Drive unit (1) according to one of the preceding claims, characterized by that the motor mount (10A-10C) at least partially encloses the electronics unit (12A-12C). [13] Drive unit (1) according to one of the preceding claims, characterized by that the electronics unit (12A, 12B) comprises a housing (122A, 122B) and an electronics assembly (123), wherein the housing (122A, 122B) encloses the electronics assembly (123) and is fastened to the motor mount (10A, 10B). [14] Drive unit (1) according to one of claims 1 to 12, characterized bythat the motor mount (10C) forms at least part of a housing (122C) of the electronics unit (12C), in which an electronics assembly (123) of the electronics unit (12C) is enclosed. [15] Drive unit (1) according to claim 13 or 14, characterized by that at least a part of the housing (122A-122C) of the electronics unit (12A-12C) has a locking element (124) which is locked to a counter-locking element (100) of the motor mount (10A-10C). [16] Adjusting device (2) for a vehicle seat (3), characterized by the drive unit (1) according to one of the preceding claims. [17] Adjusting device (2) according to claim 15, characterized bytwo pairs of one floor rail (20) which can be mounted on a vehicle floor (FB) and one seat rail (21) on which the vehicle seat (3) can be mounted, wherein the seat rails (21) are mounted on the floor rails (20) in a longitudinally displaceable manner and the motor support (10A-10C) is fastened to the two seat rails (21). [18] Vehicle seat (3), characterized by the drive unit (1) according to one of claims 1 to 14 and / or the adjusting device (2) according to claim 16 or 17.

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