WO2012076268A2

WO2012076268A2 - Electric motor drive

Info

Publication number: WO2012076268A2
Application number: PCT/EP2011/069530
Authority: WO
Inventors: Christian Bauer; Mohamed Mili; Thomas Holzer
Original assignee: Robert Bosch Gmbh
Priority date: 2010-12-09
Filing date: 2011-11-07
Publication date: 2012-06-14
Also published as: WO2012076268A3; CN103415983A; DE102010062727A1; CN103415983B

Abstract

The invention relates to an electric motor drive comprising an electric motor (100) and a transmission (120), which can be driven by said electric motor and is disposed in a transmission housing (128). The electric motor (110) has an associated motor housing (108) and can be connected in an electrically conducting manner to an associated power source via contact elements located on an associated brush holder and via a plug (305) so as to be powered. The plug (305) is associated with a plug module (305), at least some sections of which are disposed in the region of an interface (102) formed between the motor housing (108) and the transmission housing (128). The plug module (300) and the brush holder are designed as separate components.

Description

Description title

Electric motor drive prior art

The present invention relates to an electric motor drive with a

Electric motor and a drivable by this transmission, which is arranged in a transmission housing, wherein the electric motor has an associated motor housing and is electrically conductively connected to the power supply via provided on an associated brush holder contact elements and a plug with an associated power source.

Such electric motor drives are known from the prior art, which can be used for example in the automotive industry for driving seat adjusters, window regulators and / or windscreen wipers in motor vehicles. These

Electric motor drives have an electric motor arranged in a motor housing, which is in operative connection with a transmission arranged in a transmission housing, wherein the motor housing and the

Gear housing are fastened together, z. B. bolted together or riveted. The electric motor is supplied via an associated, for example, designed as a Yazaki or Sumitomo connector plug a required for operation motor current. The plug is attached to an associated connector position with a predetermined orientation on the electric motor drive.

A disadvantage of the prior art is that the plug different

Electric motor drives z. B. application specific differently aligned and / or must be attached to different plug positions on the electric motor drive. This requires a lot of different,

application-specific designed engine or gearbox housing, where Plug positions for the arrangement of the plug with a respective associated orientation are predetermined or provided.

Disclosure of the invention

An object of the invention is therefore to provide a new electric motor drive in which an attachment of a plug for electrically conductive connection with an associated power source to different

Plug positions with different orientations is made possible.

This problem is solved by an electric motor drive with a

Electric motor and one of this drivable transmission, which is arranged in a transmission housing. The electric motor has an associated motor housing and is connected to the power supply via provided on an associated brush holder contact elements and a plug with an associated power source electrically conductive. The plug is assigned to a plug-in module which, at least in sections, is formed in the region between one of the motor housing and the gear housing

Interface is arranged. The plug module and the brush holder are designed as separate components.

The invention thus makes it possible to use a simple and inexpensive plug-in module, via which the electric motor for the power supply can be electrically and reliably connected to an associated current source in a reliable and reliable manner.

According to one embodiment, the plug module is a component formed separately from the motor housing and the gear housing.

Thus, a plug-in module suitable for use with a plurality of different electric motor drives can be provided in a simple manner.

The plug module is preferably fixed by attachment of the gear housing to the motor housing in the region of the interface. Thus, the connector module can be quickly and stably fixed to the electric motor drive.

According to one embodiment, the plug module has a carrier section, which is connected to the plug via a bridge section.

The invention thus makes it possible to provide an uncomplicated and solid plug module which is versatile.

The carrier section is preferably fixed in the region of the interface formed between the motor housing and the gear housing.

Thus, the connector module can be safely and reliably attached to the electric motor drive.

According to one embodiment, at least one electronic component which can be used to control the electric motor is provided on the plug-in module.

The invention thus enables in a simple manner an improved utilization of the connector module.

The at least one electronic component is preferably fastened to the carrier section.

Thus, a stable and secure attachment of the electronic component to the connector module can be made possible.

The at least one electronic component preferably has a sensor.

Thus, a required for controlling the electric motor sensor can be integrated by attachment to the connector module in a simple manner in the electric motor drive.

According to one embodiment, the contact elements are electrically conductively connected via electrical lines provided on the plug module with connection contacts, which are provided on the plug. The invention thus enables the production of a secure and reliable electrically conductive connection between the electric motor and an associated power source via the plug.

The contact elements are preferably formed by brushing a commutation device associated with the electric motor, which are arranged on the brush carrier. The plug module is preferably at least in sections against the brush holder.

Thus, the plug module according to the invention can be found in a simple manner in a commutator motor application.

The support portion is preferably at least partially against the brush holder.

Thus, a stable and robust attachment of the plug module on

Electric motor drive can be enabled. According to one embodiment, the brush holder is completely enclosed in the axial direction by the motor housing.

The invention thus enables the provision of a compact

Electric motor drive.

The problem mentioned at the outset is also solved by a plug-in module for an electric motor drive which has an electric motor and a gear which can be driven by the latter and is arranged in a gearbox. The electric motor has an associated motor housing and is for

Power supply via provided on an associated brush holder

Contact elements and a plug with an associated power source electrically conductively connected. The plug is connected via a bridge section to a carrier module associated with the plug module, which is adapted to an arrangement of the plug module in the region of an interface formed between the motor housing and the gear housing enable. The plug module and the brush holder are designed as separate components.

Brief description of the drawings

The invention is illustrated by means of the drawings

Embodiments explained in more detail in the following description. Show it:

1 is a perspective plan view of an electric motor drive according to an embodiment,

2 is a sectional view of the electric motor of Fig. 1,

3 is a perspective view of a in Fig. 1 the transmission side facing the plug module of Fig. 1,

Fig. 4 is a perspective view of a in Fig. 1 the electric motor side facing the plug module of Fig. 1, and

5 is a perspective view of an exemplary assembly of the

Electric motor drive of FIG. 1.

Description of the embodiments

Fig. 1 shows an electric motor drive 100 with an electric motor 110 and a drivable by this transmission 120 according to an embodiment, the z. B. as a drive for a power window, Sitzversteller and / or

Windscreen wiper can be used in a motor vehicle application. the

Electric motor 110 is illustratively associated with a motor housing 108 having a mounting flange 109. The transmission 120 is an example

Gear housing 128 associated with having a mounting portion 129.

According to one embodiment, the mounting flange 109 of the

Motor housing 108 attached to the mounting portion 129 of the gear housing 128, z. B. bolted, riveted, welded, glued or on a fixed in any other way. Here, the motor housing 108 and the gear housing 128 at the transition to each other from an interface 102, at which the two housing 108, 128 abut against each other.

In the area of the interface 102, a connector module 300 provided with a plug 305 is illustratively arranged. The plug 305 is connected to an associated power source, e.g. B. a suitable DC voltage network, electrically conductively connected to allow a power supply of the electric motor 110 in its operation by the associated power source.

According to one embodiment, the plug module 300 is a component formed separately from the motor housing 108 and the gear housing 128, as described below in FIGS. 3 and 4. This separate component is z. B. by fixing the gear housing 128 to the motor housing 108 in the region of the interface 102 fixed.

The plug module 300 may be arranged according to an embodiment, at least with two different orientations on the interface 102, for. For example, with the orientation shown in Fig. 1 and with a rotated by 180 ° orientation, in which the plug 305 - in Fig. 1 - would point instead of right to left from the electric motor drive 100. In this case, the plug-in module 300 is preferably always positioned in the region of the interface 102 and thus keeps the plug 305 close to the mounting slot of the gear housing 128. This can be done, for example, by a suitable, executable by a person skilled in the art

Embodiment of the gear housing 128 in conjunction with the exemplary plug module 300 shown in FIGS. 3 and 4 are made possible.

FIG. 2 shows the electric motor 110 of FIG. 1 provided with stator and rotor components 181 and 182, respectively, which illustratively has a motor shaft 190 and is disposed in the motor housing 108 provided with the mounting flange 109. The stator components 181 are exemplary

Permanent magnets 186 and the rotor components 182 exemplified a rotor or iron core 188th

The electric motor 110 has a commutation device 185 for commutation and may be controllable such that both a Reversing operation, as well as specifications regarding a desired

Rotation speed can be realized. Illustratively, the electric motor 110 is designed as a commutator motor or as a DC brush motor, in which the

Commutation device 185 is provided with a commutator 183. It should be noted, however, that the present invention is not limited to such commutator motors, but may also find application in other electric motors, which in operation via an associated

Commutation be commutated, z. B. at electronic

commutated electric motors or brushless EC motors. The

Operation and the construction of a suitable electric motor with an associated commutation are well known in the prior art, so that here for the sake of brevity of the description is dispensed with a detailed description.

Illustratively, the commutation device 185 has a commutator 183, which makes a sliding contact on an associated commutator tread 189 with two or more brushes 187, 197, so that the commutator motor 110 is supplied with a suitable motor current during operation via the brushes 187, 197 and the commutator 183 serving as contact elements can be. Here, the brushes 187, 197 of associated spring elements, for. As so-called carbon springs, are acted upon in the direction of the Kommutatorlauffläche 189 to produce the sliding contact with the commutator 183.

The brushes 187, 197 are illustratively associated in at least one

Brush holder 140 arranged on the electrical connection elements 184 for electrically contacting the brushes 187, 197 are arranged. According to one embodiment, at least one of the brushes 187, 197 contains carbonaceous material and is z. B. formed in the manner of a carbon brush. It should be noted, however, that the operation and the basic structure of a suitable, brush-type commutating device from the prior

Technique are well known. Thus, for the sake of brevity, the description is omitted here for a detailed description.

FIG. 3 shows an exemplary embodiment of an upper side 350 of FIG

Plug module 300 of Fig. 1, which illustratively has a support portion 307 which is connected via a bridge portion 309 with the plug 305 of FIG is provided with a coupling opening 311. The support section 307 has by way of example an approximately central opening 340, through which the motor shaft 190 of FIG. 1 engages when mounting the plug module 300 on the electric motor drive 100 of FIG. 1, as described below in FIG. 5.

Illustratively, the plug 305 and the bridge portion 309 form a - in Fig. 3 - approximately inverted U-shaped structure. The support portion 307 extends approximately perpendicular to this inverted U-shaped structure from an end portion of the bridge portion 309.

According to one embodiment, at least one electronic component which can be used to control the electric motor 110 of FIG. 1 is provided on the plug-in module 300. This is illustratively fixed in the region of the support section 307 and has, for example, a sensor 330 and further sensor components 332, 334. It should be understood, however, that the description of sensor 330 provided on connector module 300 is merely exemplary in nature and should not be considered as limiting the invention.

Rather, one or more additional electronic components z. B. be provided on the support portion 307, also one or more additional sensors, for example, a respective rotor position of

To be able to determine the commutator motor 110 of FIG. 2 during its operation. Such additional electronic components can also z. B.

Electronic components for damping electromagnetic interference radiation, which occur during operation of the commutator motor 110 of FIG. 2 at commutation changes to the commutator 183 and are radiated from the commutator motor 110 have. Suitable electronic components or interference suppression components are known to the person skilled in the art and serve to improve the EMC (electro-magnetic compatibility) properties of the commutator motor 110 of FIG. 2.

The sensor 330 and the sensor components 332, 334 are connected to one another by way of example via electrical lines 336 and to connection contacts (436 in FIG. 4) provided in the plug 305. For this purpose, the electrical leads 336 are guided by the carrier section 307 via the bridge section 309 to the plug 305. In addition, the connector module 300 illustratively has electrical connections 320 provided with terminals. These extend illustratively from the support section 307 via the bridge section 309 to the plug 305, where they are likewise connected in an electrically conductive manner to associated connection contacts (420 in FIG. 4). The connections of the electrical lines 320 are electrically conductively connectable to the electrical connection elements 184 of the commutator motor 110 of FIG. 2, as described below in FIG. 5.

Fig. 4 shows an exemplary bottom 390 of the plug module 300 of Fig. 3. Fig. 4 illustrates the approximately central opening 340 of the support portion 307 and the coupling opening 311 of the plug 305, in which a suitable mating connector is inserted to an electrically conductive connection between a suitable power source and arranged in the coupling opening 311

Form terminal contacts 420, 436. As described above in FIG. 3, the connection contacts 420 serve for the power supply of the commutator motor 110 of FIG. 2 and the connection contacts 436 for the power supply of the sensor 330 and the sensor components 332, 334 of FIG. 3.

According to one embodiment, two openings 422, 424 are provided on the support section 307. These are adapted to a mounting of the

Plug module 300 on the electric motor drive 100 of FIG. 1 to allow a pass through the electrical connection elements 184 of the commutator motor 110 of FIG. 2, so that an electrically conductive connection between these connection elements 184 and the connection contacts 420 can be formed via the electrical lines 320.

FIG. 5 shows an exemplary mounting of the electric motor drive 100 of FIG. 1. Here, according to one embodiment, the electric motor 110 of FIGS. 1 and 2 is mounted first, as shown in FIG. 5A. Then, the plug module 300 of FIGS. 3 and 4 is placed on the electric motor 110 as shown in FIG. 5B.

Finally, the transmission 120 is attached to the engine 110, as shown in Fig. 5C. In particular, FIG. 5 illustrates that the plug module 300 of FIGS. 3 and 4 and the brush carrier 140 of FIG. 2 are designed as separate components. FIG. 5A shows how the rotor components 182 mounted on the motor shaft 190, illustratively having the rotor core 188 provided with a plurality of poles 130, 131, 132, 133, and those provided with the commutator 183

Commutation device 185, the brushes 187, 197 of FIG. 2 are arranged in the brush holder 140 provided with the electrical connection elements 184, starting in the direction of an arrow 510 from the side of the flange 109, starting in the motor housing 108. Here, the brush holder 140 is preferably inserted into the motor housing 108 in such a way that it is completely enclosed axially by the motor housing 108. In the motor housing 108, the stator components 181 of FIG. 2 are pre-assembled. The

Motor shaft 190 is provided according to an embodiment with a spindle portion 590, which is designed to drive the transmission 120.

5B shows how the plug module 300 is pushed onto the electric motor 110 with its underside 390 in the direction of an arrow 520 until its electrical connection elements 184 are electrically conductive with the connections of the electrical lines 320 and thus with the electrical lines 320 provided on the plug module 300 are connected. Here, the provided with the spindle portion 590 motor shaft 190 engages by in the

Carrier portion 307 of the plug module 300 provided opening 340 through and the electrical connection elements 184 engage through the on

Carrier portion 307 provided openings 422, 424 through.

Illustratively, the carrier section 307 engages around the brush carrier 140 designed as a separate component, so that the carrier section 307 abuts against the brush carrier 140 at least in sections. In addition, the carrier portion 307 is at least partially sunk or arranged in the motor housing 108. Thus, at least substantially free play radial fixation of the connector module 300 can be achieved at the electric motor drive 100.

FIG. 5C shows how the gear housing 128, in which transmission components 550 are schematically illustrated, is pushed in the direction of an arrow 530 onto the plug module 300 and the motor housing 108. In this case, the spindle portion 590 engages in the gear housing 128 and is brought into operative connection with the gear components 550, thus a

Drive the transmission 120 to allow by the electric motor 110. The gear housing 128 is arranged on the motor housing 108 in such a way that its fastening section 129 abuts against the mounting flange 109 of the motor housing 108 and engages around the bridge section 309 of the plug module 309 at least in sections. Thus, the backlash-free radial

Fixation of the connector module 300 on the electric motor drive 100 can be further improved. 1, so that an at least substantially backlash-free axial fixing of the carrier section 307 in the region of the interface 102 and thus of the plug module 300 on the electric motor drive 100 can be achieved.

Claims

claims

1. Electric motor drive (100) with an electric motor (110) and one of

this drivable transmission (120), which is arranged in a transmission housing (128), wherein the electric motor (110) an associated

Motor housing (108) and for power supply via on an associated brush holder (140) provided contact elements (187, 197) and a plug (305) with an associated power source is electrically conductively connected, characterized in that the plug (305) a plug module ( 300), which is arranged at least in sections in the region of an interface (102) formed between the motor housing (108) and the gear housing (128), wherein the

Plug module (300) and the brush holder (140) are formed as separate components.

2. Electric motor drive according to claim 1, characterized in that the plug module (300) is a separate from the motor housing (108) and the gear housing (128) formed component.

3. Electric motor drive according to claim 1 or 2, characterized in that the plug module (300) by fixing the gear housing (128) to the motor housing (108) in the region of the interface (102) is fixed.

4. Electric motor drive according to one of the preceding claims, characterized in that the plug module (300) has a support portion (307) which is connected via a bridge portion (309) with the plug (305).

5. Electric motor drive according to claim 4, characterized in that the carrier portion (307) is fixed in the region of the between the motor housing (108) and the transmission housing (128) formed interface (102).

6. Electric motor drive according to one of the preceding claims, characterized in that on the plug module (300) at least one for controlling the electric motor (110) usable, electronic component (330, 332, 334) is provided.

7. Electric motor drive according to claim 4 and 6, characterized in that the at least one electronic component (330, 332, 334) on

Carrier section (307) is attached.

8. Electric motor drive according to claim 6 or 7, characterized in that the at least one electronic component (330, 332, 334) has a sensor (330).

9. Electric motor drive according to one of the preceding claims, characterized in that the contact elements (187, 197) via on

Plug module (300) provided with electrical lines (320)

Connection contacts (420) are electrically connected, which are provided on the plug (305).

10. Electric motor drive according to claim 9, characterized in that the contact elements (187, 197) are formed by brushing an electric motor (110) associated commutation device (185) which are arranged on the brush holder (140), wherein the plug module (300). at least in sections abuts against the brush holder (140).

1 1. Electric motor drive according to claim 4 and 10, characterized in that the carrier portion (307) at least partially against the

Brush holder (140) is applied.

12. Electric motor drive according to one of the preceding claims, characterized in that the brush holder (140) in the axial direction is completely enclosed by the motor housing (108).

13. Plug module (300) for an electric motor drive (100), the one

Electric motor (110) and one drivable by this, in one

Transmission housing (128) arranged gear (120), wherein the Electric motor (110) has an associated motor housing (108) and for supplying power via on an associated brush holder (140) provided contact elements (187, 197) and a plug (305) with an associated power source is electrically conductively connected, characterized in that the plug (305) is connected via a bridge section (309) to a carrier section (307) associated with the plug module (300), which is arranged to arrange the plug module (300) in the area between the motor housing (108) and the housing

Transmission housing (128) formed interface (102) to allow, wherein the plug module (300) and the brush holder (140) are formed as separate components.