DE102017216075A1 - Stator for an electric machine, an electric machine and method for producing such a stator - Google Patents

Abstract

Stator (10) and method for producing a stator (10) for an electrical machine (12), comprising a stator base (34) having radial stator teeth (14) for receiving coils (17) of an electrical winding (18), and on an end face (39) of the stator main body (34) has an insulating lamella (40) with receiving pockets (46) for insulation displacement elements (70), wherein the coils (17) by means of a winding wire (22) are wound in the Receiving pockets (46) is inserted, wherein cutting-clamping elements (70) are arranged, which engage with a fork contact (76) in the receiving pockets (46) axially to electrically contact the winding wire (22), wherein the insulation displacement Elements (70) opposite to the fork contacts (76) comprise pins (83) which are directly electrically connected to an annular electronic board (52), the printed circuit board (52) being arranged axially over the insulating lamella (40) to provide the electrical connection Winding (18) to bes Tromen.

Description

The invention relates to a stator for an electric machine, and to an electric machine and to a method for producing such a stator according to the preamble of the independent claims.

State of the art

With the US 2005/0242678 A1 For example, a stator of an electric machine has been known in which single-tooth coils are wound on the stator teeth with a continuous winding wire. In this case, the winding wire is guided between the individual coils on the outer circumference of the insulating mask. Several peripheral wires are arranged side by side in the axial direction, whereby correspondingly axial space is required. In some places receiving pockets for phase connection tabs are formed on the insulating lamellae, which are pressed axially by means of insulation displacement technology in the receiving pockets. The interconnection of the individual coils takes place here via the winding scheme by the order of the wound coils is realized via the corresponding peripheral wires. In this embodiment, the interconnection of the coils is finally determined by the winding order. A variation of the interconnection is possible in this embodiment only by a completely new winding concept. There is also the risk that the axially adjacent peripheral wires can form a short circuit at high shaking load. These disadvantages are to be remedied by the solution according to the invention.

Disclosure of the invention

Advantages of the invention

The device according to the invention and the method according to the invention with the features of the independent claims has the advantage that a reliable electrical contacting of the electric coils is produced by the axial insertion of the insulation displacement elements in the receiving pockets of the stator main body, without further cohesive connection processes for Winding wire are necessary. By forming the pins on the insulation displacement elements, a printed circuit board can be placed axially on these pins and contacted electrically. As a result, the individual coils can be connected directly to the conductor tracks of the printed circuit board via the pins of the insulation displacement elements without further electrical conductors. By designing the design of the tracks on the circuit board, the individual coils can be connected in different ways to electrical phases. Since anyway an electronic circuit board is necessary for the control of the coils, eliminating the need for this solution, the interposition of a so-called Verschalteplatte between the electronics board and the coils. In this case, the circuit board formed as an electronic circuit board extends annularly over the entire circumference of the stator main body, so that the circuit board is arranged directly above the coil with its insulation displacement elements.

The measures listed in the dependent claims advantageous refinements and improvements of the embodiments specified in the independent claims are possible. It is particularly advantageous if through holes are arranged as pin holes in the electronic circuit board for receiving the pins of the insulation displacement elements. As a result, the electronic board can be pressed directly axially on the pins of the inserted into the receiving pockets insulation displacement elements. The pins preferably fully penetrate the pin holes so that they can be easily soldered to the electronics board. Through this solder joint direct contact is made with the tracks on the electronic board. In this case, a standard soldering method (for example, SMD) can be used, since the electronic board for the soldering process is freely accessible axially from above.

In an advantageous embodiment, both all receiving pockets and the inserted therein cutting-clamping elements are arranged at the same radial distance from the stator axis. As a result, all pins are preferably also at the same radius, so that the pin holes in the electronics board are also all in a constant circular path. Preferably, the pin holes are formed on the radially outer edge of the electronic circuit board, so that the conductor tracks run largely radially within the pin holes. The radial extension of the electronic board corresponds approximately to the radial extent of the stator base body, so that the outer diameter and the inner diameter of the printed circuit board are approximately congruent with the outer diameter and the inner diameter of the laminated core.

For better contacting of the pins in the pin holes of the electronic board, the pins are advantageously formed with a press-fit. Here, an eyelet is formed in the pin, for example, which is enclosed by thin axial webs. These axial webs can be compressed radially when pressed into the pin hole, so that the pin is firmly pressed in the pin hole.

It is advantageous if a defined axial abutment surface is formed on the insulation displacement elements, against which the electronic circuit board rests. As a result, the electronics board can be plugged axially on the pins until they on the defined stop the insulation displacement elements abuts. The axial abutment surface is preferably formed as a shoulder on both sides of the pins on which the insulation displacement element can also be pressed by means of a tool in the receiving pocket of the insulating lamella.

On the annular electronic circuit board, a plurality of circular strip conductors can be arranged in a space-saving manner, which extend adjacent to one another in the radial direction. Due to the specific design of the conductor tracks, different pins can be electrically connected to one another, whereby a plurality of coils are connected to different electrical phases. The individual phases then have a phase connection contact, with which the individual phases can be energized from the outside. The phase connection contacts are preferably designed as axial conductor strips, which are fastened directly to the electronic circuit board and are electrically connected to their conductor tracks. For example, two or three or more phase connection contacts are formed on the printed circuit board, which can be connected to a mating connector, or can be welded to a power supply.

The electronic board advantageously has a sensor for the rotor position detection, which is electrically connected directly to the conductor tracks of the electronic board. For example, the sensor may be formed as a magnetic sensor which detects a corresponding signal of a sensor magnet on the rotor. In this case, for example, one or more Hall sensors or a GMX sensor can be contacted directly on the electronic board. In this case, for example, SMD components can be used, which can be fixed and contacted with a standard SMD soldering process on the printed circuit board. The magnetic sensor is preferably arranged on the radially inner region of the printed circuit board, so that it can interact directly on a radially opposite annular magnet on the rotor shaft. In this case, the ring magnet is magnetized particularly favorably in the radial direction, so that the magnetic polarity of the radial magnetic field changes constantly with a rotation of the rotor relative to the magnetic sensor of the electronic board. The arrangement of the magnetic sensor radially directly opposite to the sensor magnet can be saved compared to an axial sensor arrangement axial space of the electric machine. By using the electronic board on the one hand for the rotational position sensor and the electronic control of the phases and at the same time by the interconnection of the individual coils to the electrical phases, the variety of parts and the connection technology during assembly of the electrical machine is significantly reduced. So that the ring magnet is reliably supported on the rotor shaft over large temperature ranges and with high vibrations, the ring magnet is arranged on a non-magnetic intermediate ring, for example injection-molded. The intermediate ring can be pressed directly onto the rotor shaft or, in an alternative embodiment, fastened to an output element that is pressed onto the rotor shaft. For this purpose, for example, an output pinion in axial extension to a socket on which the intermediate ring and / or the magnetic ring are mounted.

• Wellen-orientiert: Zwischen Abtrieb (hier das Ritzel) und Rotorpaket;
• Gehäuse-orientiert: Zwischen Kundenschnittstelle und
• Statorpaket/Verschalteplatte

Where is the bearing plate arranged?

• Shaft-oriented: Between output (here the pinion) and rotor package;
• Housing-oriented: Between customer interface and
• Stator / Verschalteplatte

In order to reduce the current intensity in the interconnects between the pins, preferably several coils are connected in parallel to one another. For example, the layout of the electronic board via the pins in each case four coils are electrically connected in parallel to each other, so that the current in the conductor tracks is reduced accordingly. The four coils arranged parallel to one another then form an electrical phase. Preferably, the coils are grouped into a total of three phases, wherein the phases are connected to each other for example via a star point circuit or a triangular circuit.

In a preferred embodiment, one stator tooth is circumferentially wound in the circumferential direction in succession in the circumferential direction. The coils are produced particularly favorably by means of needle windings, wherein in each case exactly one coil is wound on a stator tooth. If all the coils are wound in succession with a continuous winding wire, the entire electrical winding has only one wire beginning and one wire end, whereby only an additional receiving pocket with an additional insulation displacement element compared to the number of coils necessary. For each coil exactly one receiving pocket and exactly one insulation displacement element are arranged, wherein an additional receiving pocket and an additional insulation displacement element are arranged for the wire beginning or the wire end. In an example of twelve coils so exactly thirteen insulation displacement elements are formed, which are then pressed by means of a mounting tool axially in exactly thirteen receiving pockets. Due to the winding order of each immediately adjacent stator teeth, the connecting portions of the winding wire between the coils extend only over the circumferential angle of the stator. This will prevent the connecting sections between different coils are arranged axially above one another, whereby the risk of short circuits is reduced and axial space is saved.

Such a winding method is particularly suitable for a so-called entangled stator, in which the stator teeth are not arranged axially parallel to the stator axis, but extend in the circumferential direction obliquely to the stator axis. Such an entangled stator is realized for example by means of laminations, which are each slightly stacked in the circumferential direction against each other twisted. The individual laminations together form the stator pack, which has a circumferentially closed return ring, which is adjoined radially by the stator teeth.

The receiving pockets have a greater extent in the circumferential direction than in the radial direction. In this case, the winding wire is guided by a first coil radially through the receiving pocket to the radial outer side of the stator and then guided radially in a circumferentially adjacent recess radially inward to the next stator tooth. Thereby, two adjacent coils are connected to each other by means of the connecting portion of the winding wire on the radially outer side of the insulating lamella in a direct shortest path. In this case, the winding wire is held taut within the receiving pockets, so that the fork contact of the insulation displacement element reliably cuts into the winding wire during axial pressing. The insulation displacement element jammed thereby, in particular by means of molded locking lugs - in the receiving pocket.

Such a stator is particularly suitable for an electrical machine, in which the stator is inserted axially into a motor housing. In this case, bearing caps are arranged on both sides of the stator on the motor housing, in which the rotor is accommodated. The electric machine is designed for example as an internal rotor, so that the rotor is rotatable in the inner cavity of the stator. The electronic board preferably receives a control electronics, which regulates the electronic commutation of the stator and is preferably arranged directly axially above the coils. Such an EC motor can be used particularly advantageously for adjusting moving parts or as a rotary drive for components in the motor vehicle.

In order that the electronic board exactly to the receiving pockets - and thus also to the pins of the insulation displacement elements - are positioned, centering pins are formed on the Isolierlamelle extending in the axial direction. Correspondingly, centering openings are formed in the axial direction on the electronics board, in which the centering pins engage axially. After the centering and the axial joining of the electronic circuit board, the centering pins, for example, pass completely through the centering receivers formed as passage openings. Therefore, the free ends of the centering pins can be plastically deformed after joining the electronic board to form a positive connection. As a result, the printed circuit board is reliably fixed axially on the stator base body. The plastic material deformation can be carried out particularly easily by hot stamping the centering pins made of plastic.

With the method according to the invention for producing the stator, the circuit board can be completely omitted by the direct insulation displacement connection between the coils and the electronic board. In this case, as a Isolierlamelle preferably a separately manufactured component - in particular a plastic injection molded part - pressed axially on the front side of the stator main body. After winding the individual coils on the individual stator teeth of the winding wire is inserted directly into the receiving pockets. The separately formed insulation displacement elements are freely accessible axially from above for their axial mounting in the receiving pockets and can - be reliably accurately positioned in the receiving pockets - in particular by means of the molded shoulder. The pins opposite the forks of the insulation displacement elements extend axially away from the stator body, so that the electronic circuit board can be pressed directly onto the pins with its pin holes. Preferably, then the sweeping pins are soldered to the electronics board. The electronic board preferably carries all electronic components that are necessary for the control of the individual coils. By integrating the coil connection in the circuit board of the control electronics, can be dispensed with the production and installation of an additional wiring board.

Particularly advantageous, the rotor position sensor can be arranged directly on the electronic board, whereby the installation of a separate sensor element - and thus the electrical connection to the control electronics - is eliminated. If a magnetic field sensor is arranged as a sensor in the radial inner side of the electronic circuit board, it can directly detect the signal of a magnetic field emanating from a radially opposite sensor magnet. By such a radial interaction of the sensor and signal generator axial space can be saved. The magnetic sensors, for example, two adjacent Hall sensors or a GMX sensor, can be contacted without additional effort together with the other electronic components on the electronic board, preferably by means of SMD soldering.

The direct insulation displacement connection between the winding wire of the coils and the electronic board remains mechanically stable even under changing environmental conditions such as temperature fluctuations and shocks. Thus, such a stator is also very robust against high shaking loads and extreme weather conditions and therefore suitable for use in motor vehicles - especially outside the passenger compartment.

list of figures

Embodiments of the invention are illustrated in the drawings and explained in more detail in the following description.

• 1 eine Draufsicht auf einen Stator, nachdem ein erster Statorzahn bewickelt ist,
• 2 eine Detailansicht der Drahtführung in einer Aufnahmetasche,
• 3 ein separat gefertigtes Schneid-Klemm-Element
• 4 ein Stator mit eingefügten Schneid-Klemm-Elementen, und
• 5 eine Schnittdarstellung durch eine elektrische Maschine mit einer montierten Leiterplatine.

Show it:

• 1 a top view of a stator after a first stator tooth is wound,
• 2 a detailed view of the wire guide in a receiving pocket,
• 3 a separately manufactured insulation displacement element
• 4 a stator with inserted insulation displacement elements, and
• 5 a sectional view of an electrical machine with a mounted circuit board.

In 1 is a stator 10 an electric machine 12 shown, the one in the circumferential direction 2 closed return ring 38 at the radial stator teeth 14 are formed. In this embodiment, the stator teeth 14 radially inward so that within the stator teeth 14 a rotor 11 can be stored, as an internal rotor from the stator 10 is driven. The stator 10 is made of individual laminations 36 assembled in the axial direction 3 stacked on top of each other and to a common disc pack 35 are connected. The laminations 36 are preferably punched out, so that the stator teeth 14 integral with the return ring 38 are formed. The slat package 35 forms the stator base body 34 , which in an alternative embodiment also integrally without laminations 36 can be trained. In 1 For example, the individual laminations 36 in the circumferential direction 2 slightly twisted against each other so that the stator teeth 14 not parallel to the axial direction 3 run, but in the circumferential direction 2 are formed entangled. At a first axial end face 39 of the stator base body 34 is an insulating lamella 40 arranged, which preferably the front side 39 completely covered with an insulating material. The insulating lamella is preferred 40 formed as a plastic injection molded part, which axially on the stator base 34 pressed. The stator teeth 14 have a tooth tip at their radial ends 15 on, in the circumferential direction 2 is formed wider than the actual stator tooth 14 in the radial area, which is wound. The insulating lamella 40 points in the area of the tooth head 15 in the axial direction 3 and in the circumferential direction 2 a supernatant 33 on, a corresponding coil 17 on the stator tooth 14 holds. About the extent of the stator tooth 14 in the radial direction 4 are in the insulating lamella 40 grooves 43 formed, in which the winding wire 22 is inserted. Radial outside has the insulating lamella 40 a closed scope 41 on, on the guide elements 44 are formed, the connecting portions 30 of the winding wire 22 between the individual coils 17 to lead. The guide elements 44 extend in the axial direction 3 , wherein the winding wire 22 in the radial direction 4 is led to the outside to the radial outside 45 the guide elements 44 in the circumferential direction 2 to be led. At the closed periphery 41 the insulating lamella 40 are also holding pockets 46 formed, in which the winding wire 22 is inserted to with insulation displacement elements 70 to be connected. The receiving pockets 46 pointing in the circumferential direction 2 a larger dimension than in the radial direction 4 , Preference is given to all receiving pockets 46 at the same radius with respect to the stator axis 20 arranged. How out 1 it can be seen, the receiving pockets 46 preferably in the range of stator slots 13 between the stator teeth 14 arranged. Thereby every stator tooth is 14 exactly one storage bag 46 associated with an additional receiving pocket 46 is arranged for the winding wire beginning. In 1 the winding wire start is not shown, but only schematically the winding of a single coil 17 , The sink 17 is moved around the stator tooth by means of a nozzle of a needle winder 14 wound. After the finished winding a coil 17 becomes the winding wire 22 through the receiving bag 46 guided radially outwards and on the radial outside 45 the guide elements 44 in the circumferential direction 2 to the next stator tooth 14 guided. For this purpose, the winding wire 22 through a cut-out 56 between the guide elements 44 again radially inward to the next stator tooth 14 guided.

In 2 is an enlarged view of the wire guide of two adjacent coils 17 shown. The receiving bag 46 has a first radially inner pocket wall 61 and a second radially outer pocket wall 62 on. The first and the second pocket wall 61 . 62 are arranged approximately parallel to each other. Both bag walls 61 . 62 have an axial slot 63 on, each as a radial passage opening 64 is trained. The second radial pocket wall 62 at the same time forms the radial outside 45 the guide elements 44 , Here, the guide element forms here 44 an extension of the second radial pocket wall 62 in circumferentially 2 , To the guide element 44 closes in the circumferential direction 2 the cut-out 56 on, with the cutout 56 a side wall 66 has, which is radial to the radial outside 45 of the guide element 44 runs. The winding wire 22 gets along the sidewall 66 guided radially inwards and around the next stator tooth 14 wound. In a preferred embodiment, each of the immediately adjacent stator teeth 14 wound directly one after the other, so that the connecting wire 30 between two individual coils 17 only via the stator slot 13 in the circumferential direction 2 extends. In this embodiment, the axial extent of the guide element 44 the same size as the axial extent of the receiving pocket 46 to mechanically stabilize the latter. The axial slot 63 the first and / or second pocket wall 61 . 62 has a downwards rejuvenation 65 on, leaving the winding wire 22 when inserting into the slot 63 is jammed in a defined position. A base area 49 the receiving bag 46 is located axially lower than the lower end of the slots 63 , so that the corresponding insulation displacement element 70 in the axial direction 3 over the winding wire 30 out to the pocket base 49 can extend. The slots 63 have at their axially open end an insertion phase 68 on, so that the winding wire 22 easier to introduce. Likewise are on insides 50 the receiving bag 46 Insertion Units 51 formed, for example, as bevels, the cutting-clamping elements 70 in the receiving bag 46 Center.

The 3 shows a single insulation displacement element 70 as it is in the receiving pockets 46 of the stator base body 34 can be inserted. At the axially lower end, the insulation displacement element 70 a fork 76 on, the axially over the winding wire 22 in the receiving bag 46 is pushed. The fork 76 has two opposite cutting edges 75 on, which is the axial insertion into the receiving pocket 46 in the winding wire 22 incise. When axially inserting the insulation displacement element 70 their outsides are supported 77 with respect to the circumferential direction 2 on the corresponding side inner walls 50 the receiving bag 46 from. Additionally are on the outside 77 For example, locking lugs 72 molded, located in the inside 50 the receiving bag 46 dig. This will make the insulation displacement element 70 firmly in the receiving bag 46 jammed, with a good conductive contact with the winding wire 22 will be produced. Axially up, opposite to the fork 76 has the insulation displacement element 70 an axial pin 83 which is suitable in a corresponding pin hole 86 an electrical circuit board 52 to be inserted. The pin 83 is for example as a press-in contact 84 formed, which is an eyelet 87 with side bars 88 forms across the pin 83 are elastically bendable. During axial insertion of the pin 83 in the pin holes 86 the electronic board 52 in is done by compressing the side bars 88 a tight press contact between the pin 83 and the pin hole 86 educated. Between the pin 83 and the fork 76 are on the insulation displacement element 70 on both sides of the pin 83 Shoulder 69 formed on which the insulation displacement element 70 axially in the receiving pockets 46 can be pressed. At the same time, the shoulders can 69 optionally as axial stop surface for the electronic board 52 serve.

In 4 are in all receiving pockets 46 individual insulation displacement elements 70 pressed axially. For example, the stator 10 of the 4 twelve stator teeth 14 and corresponding to twelve coils 17 on. Since in each case between two coils 17 a storage bag 46 is arranged, are thereby twelve receiving pockets 46 educated. However, for the winding wire beginning, or the winding wire end comes exactly one more receiving pocket 48 added so that the stator 10 a total of thirteen receiving pockets 46 . 48 , and accordingly thirteen inserted insulation displacement elements 70 having. For example, the insulation displacement elements 70 with their pins 83 regularly over the circumference in the area of the stator slots 13 arranged. In the lower picture area here is the additional thirteenth receiving pocket 48 arranged for the winding wire end, so that in this area the three adjacent receiving pockets 46 . 48 a smaller distance in the circumferential direction 2 have, so also their pins 83 in the circumferential direction 2 have a smaller distance than over the remaining circumference. Furthermore are in 4 Pins 80 to the insulating lamella 40 molded, extending in the axial direction 3 extend. With these centering pins 80 will the electronics board 52 opposite the stator base body 34 pre-positioned by the centering pins 80 axially in corresponding centering 81 in the electronics board 52 intervene here as axial through holes 82 are formed.

The attached electronics board 52 is in 5 shown. The electronic board 52 here has a ring shape which is approximately over the radial region of the stator main body 34 extends. At the outer circumference of the electronic board 52 are the pin holes 86 formed, through which axially the pins 83 the insulation displacement elements 70 extend. On the electronics board 52 are tracks 53 formed, depending on the desired interconnection of the coils 17 the individual pins 83 connect electrically. For example, to the pins 83 with the electronics board 52 soldered. According to a preferred embodiments are always four coils 17 four times electrically connected in parallel with each other to a phase 26 interconnected, whereby the current in the interconnects 53 reduced accordingly. The single ones phases 26 may in turn be connected together in a delta connection or a star point circuit. The different wiring concepts can be explained by the layout of the tracks 53 on the circuit board 52 will be realized. On the printed circuit board 52 are also phase connection contacts 85 arranged, extending from the printed circuit board 52 in the axial direction 3 extend. There are exactly two phase connection contacts 85 - the more - are arranged, with more than three phases 26 through the circuit board 52 can be realized to a redundant electric motor 10 which is still ready for use even when in a coil 17 a short circuit occurs. On the printed circuit board 52 can use more electronic components 91 be arranged for the electrical control of the coils 17 needed. For example, at the radially inner region of the printed circuit board 52 a rotary slide sensor 94 arranged with a signal generator 97 of the rotor 11 interacts. For example, the Drehlagensensor 94 be designed as a Hall sensor or GMX sensor, in particular in SMD technology (surface mounted devices) on the printed circuit board 52 are soldered. Such a rotary slide sensor 94 has, for example, sensitive surfaces that can detect a radial magnetic field change. The signal generator 97 is here, for example, as a ring magnet 98 formed on a rotor shaft 99 of the rotor 11 is attached. In the embodiment of 5 is on the rotor shaft 99 an output element 100 with an axial sleeve molded onto it 103 arranged. On this sleeve 103 is a non-magnetic intermediate ring 105 arranged on which the ring magnet 98 is attached. For example, the ring magnet 98 on the intermediate ring 105 sprayed, and preferably magnetized in the radial direction. With rotating rotor 11 sees the Drehlagensensor 94 alternating magnetic poles, from which the rotational position of the rotor 11 can be determined. By the radial sensor system axial space can be saved, wherein the pinion 100 on the rotor shaft 99 for example, protrude axially from a motor housing to deliver a drive torque.

In this embodiment, a bearing plate is axially above the printed circuit board 52 used in an unillustrated motor housing, wherein the phase connection contacts 84 for example, through the bearing cap out of the motor housing out to be energized. The output pinion 100 is made of steel, for example, and directly on the rotor shaft 99 pressed. Because the ring magnet 98 Relatively sensitive to mechanical and thermal stress, the intermediate ring resembles 105 the tension between the pinion 100 and the ring magnet 98 out. The electric machine 12 is designed as an electronically commutated motor, in which via the Drehlagensensor 94 the correct commutation time is detected around the individual coils 17 suitably energized sequentially to the rotor 11 drive. The rotor 11 has permanent magnets 24 up here within a rotor package 25 are arranged. Here is the extension of the permanent magnets 24 in the circumferential direction 2 greater than in the radial direction 4 , The permanent magnets 24 lie in this embodiment radially within the outer circumference of the rotor 11 and thus form so-called buried magnets 24 ,

It should be noted that, with regard to the exemplary embodiments shown in the figures and in the description, a variety of possible combinations of the individual features are possible with one another. For example, the specific training, the arrangement and number of coils 17 , as well as the training and number of receiving pockets 46 be varied accordingly. The receiving pockets 46 can directly into one of the Statorgrundkörper 34 molded insulating mask or in a separately manufactured insulating lamella 40 be molded onto the stator body 14 is put on. Similarly, the location and design of the insulation displacement elements 70 and the formation of the phase connection contacts 85 the requirements of the electric machine 12 and adapted to the production possibilities. By means of the inventive compound of the printed circuit board with the individual coils 17 through the insulation displacement elements 70 can through appropriate designs of the printed circuit board 52 different interconnections can be realized. This can be the training of the fork 76 and the pins 83 the insulation displacement elements 70 be adjusted accordingly. The invention is particularly suitable for the rotary drive of components or the adjustment of parts in the motor vehicle, in particular outside the passenger compartment, but is not limited to this application.

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The 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

• US 2005/0242678 A1 [0002]

Claims (15)

Stator (10) for an electric machine (12), having a stator base body (34) which has radial stator teeth (14) for accommodating coils (17) of an electrical winding (18), and on an end face (39) of the stator base body (3). 34) has an insulating lamella (40) with receiving pockets (46) for insulation displacement elements (70), wherein the coils (17) by means of a winding wire (22) are wound, which is inserted into the receiving pockets (46), wherein cutting Clamping elements (70) are arranged, which engage with a fork contact (76) in the receiving pockets (46) axially to electrically contact the winding wire (22), characterized in that the insulation displacement elements (70) opposite to the fork contacts (76) have pins (83) which are electrically connected directly to an annular electronic board (52), wherein the electronic board (52) is arranged axially above the insulating lamella (40) to energize the electrical winding (18) , Stator (10) after Claim 1 , characterized in that on the electronic board (52) axially continuous pin holes (86) are formed through which the pins (83) protrude axially through and are soldered to the electronic board (52) - in particular on the insulating lamella (40) remote side of the electronic board (52). Stator (10) after Claim 1 or 2 , characterized in that all the cutting-clamping elements (70) are arranged on an equal radius, which corresponds to the radius on which all receiving pockets (46) are arranged, and the pins (83) all at the same radius - in particular in the radially outer region of the electronic board (52) - in the electronic board (52) engage. Stator (10) according to one of the preceding claims, characterized in that the pins (83) have a press-in contact (84) which is pressed into the pin holes (86), and in particular to the insulation displacement elements (70). an axial stop (69) is formed on which the electronic board (52) bears axially. Stator (10) according to one of the preceding claims, characterized in that on the electronic circuit board (52) circular strip conductors (53) are formed, which are connected on the one hand with the pins (83) and on the other hand with phase connection contacts (85) for the power supply of Stator (10). Stator (10) according to any one of the preceding claims, characterized in that on the inner radial side of the electronic board (52) a Drehlagensensor (94) is arranged, which cooperates with a signal generator (97) of the rotor (11), wherein the Drehlagensensor ( 94) is designed in particular as a magnetic field sensor, preferably as a Hall sensor or GMX sensor. Stator (10) according to one of the preceding claims, characterized in that the rotor (11) via a bearing plate in the stator (10) is mounted and on the rotor (11) a signal generator (97) is arranged, in particular as a ring magnet (98 ) is formed, which preferably in the radial direction (4) magnetized pole segments. Stator (10) according to any one of the preceding claims, characterized in that on the rotor (11) an output gear (100) is arranged, which has an axial sleeve (103) on which the sensor magnet (97) is arranged, in particular between the sleeve (103) and the sensor magnet (97) a non-magnetically conductive intermediate ring (105) is arranged, on which the ring magnet (98) is preferably sprayed. Stator (10) according to any one of the preceding claims, characterized in that a plurality - preferably four - coils (17) are connected electrically parallel to one another to a phase (26), and the - preferably exactly three - phases (26) to one another Star point circuit or a triangular circuit are interconnected. Stator (10) according to one of the preceding claims, characterized in that all the coils (17) are wound directly one after the other in the circumferential direction (2) adjacent stator teeth (14) with a continuous winding wire (22) - in particular by means of needle windings - wherein between each Coil (17) of the winding wire (22) through a receiving pocket (46) is guided. Stator (10) according to one of the preceding claims, characterized in that the stator base body (34) of individual laminations (36) is stacked having a closed yoke ring (38) and molded thereon radial stator teeth (14), in particular the individual laminations (36) in the circumferential direction (2) are arranged twisted to each other, so that the stator teeth (14) in the circumferential direction (2) are formed entangled. Stator (10) according to one of the preceding claims, characterized in that the receiving pockets (46) have two in the circumferential direction (2) extending radial walls (61, 62), in which a radial opening (64) as an axially upwardly open slot (63) is formed, in which the winding wire (22) is inserted, wherein the insulation displacement elements (70) in the circumferential direction (2) are wider than in the radial direction (4) and centrally to the circumferential direction (2) a fork contact (76 ) with cutting edges (75) axially slid over the winding wire (22) to cut into and thereby form an electrical contact with outer sides (77) of the insulation displacement elements (70) in the receiving pockets (46) - preferably by means of locking lugs (72) - clamp. Electric machine (12) with a stator (10) according to one of the preceding claims, characterized in that the stator (10) is inserted into a cylindrical motor housing, wherein the rotor (11) via bearing shields of the motor housing within the stator (10) mounted is, and in particular on the electronic board (52) all the electronic components (91) for driving the phases (26) are arranged. Method for producing a stator (10) according to one of the preceding claims, characterized by the following method steps: - an insulating lamella (40) is axially joined to an end face (39) of the stator teeth (14) - then coils (14) are wound on the stator teeth (14) 17), wherein after each winding of a coil (17) of the winding wire (22) radially through a receiving pocket (46) for a cutting-clamping element (70) is guided - separately manufactured insulation displacement elements (70) axially in the receiving pockets (46) are pressed to electrically contact the winding wire (22); an electronic board (52) is axially joined to pins (83) extending from the insulation displacement members (70) in the axial direction (3) , Wherein on the electronic circuit board (52) conductor tracks (53) are formed, which interconnect the individual coils (17) electrically to each other electrical phases (26). Method according to Claim 14 characterized in that - in the stator (10) a rotor (11) is mounted, which as a signal generator (97) has a sensor magnet (98) which is arranged radially directly opposite a magnetic field sensor (94), which at a radially inner Area of the annular electronic board (52) is arranged.

Images