CN111277064A - Stator for an electric machine, electric machine and method for producing such a stator - Google Patents

Abstract

A stator (10), an electric machine (9) and a method for manufacturing a stator (10), having a stator base body (34) with radial stator teeth (14) for receiving electrical windings (20), wherein , the electrical winding ( 20 ) is connected to a separately produced terminal block ( 52 ) by means of a cut-clamp connection, wherein a receiving recess ( 46), inserting the winding wire (22) of the electrical winding (20) in the receiving recess, wherein a cutting-clamping-element (70) is formed at the terminal block (52), the cutting-clamping A clamping-element (70) is pressed into the receiving recess (46), wherein the cutting-clamping-element (70) is fastened in the receiving recess (46) by means of a plastic material deformation (90). ) at the open edge (48).

Description

Stator for electric machine, electric machine and method for manufacturing such stator

technical field

The present invention relates to a stator for an electric machine as well as an electric machine and a method for manufacturing such a stator according to the preambles of the independent claims.

Background technique

A stator for an electric machine is known from DE 10 2012 224 153 A1, in which insulating laminations, carrier plates and terminal plates are arranged axially on the lamination stack. The stator is wound, for example, by means of needle windings, wherein the individual sub-coils are connected to one another on the outer periphery of the carrier plate by means of connecting wires. Here, the entire winding is wound in one piece by means of a single winding wire. Since the connecting lines between the individual coils are arranged to overlap each other in the axial direction, the axial structural height of the stator is relatively large. In addition, the cost for soldering the terminal blocks to the connecting wires is very high.

DE 10 2008 054 529 A1 shows a stator for an electric motor, which consists of previously wound individual segments. Here, the wire ends of the single-tooth coils are inserted into the receiving recesses for the cutting-clamping connection. After pressing a plurality of cutting-clamping elements into the receiving recess, there is a risk that when the bearing cap is further assembled and when the electronic unit is contacted, the cutting-clamping elements move relative to the inserted wire and The electrical contact thereof is thereby released. These disadvantages should be eliminated by the solution according to the invention.

SUMMARY OF THE INVENTION

Invention Advantages

In contrast to this, the device according to the invention and the method according to the invention, with the features of the independent claims, have the advantage that a permanent and reliable cutting-clamping connection is created by forming the deformation of the plastic material, which is The deformation firmly fixes the cutting-clamping element in the receiving recess. The plastic material deformation prevents that the cutting-clamping element can be released from the wire inserted into the receiving recess. In this case, an axial positive fit is provided for the cutting-clamping element, which prevents the cutting-clamping element from being able to move out of the receiving recess in the axial direction or relative to the winding. line movement. Thus, the firm, form-locking connection between the cutting-clamping element and the receiving recess cannot be released even during the further assembly of the components of the electric motor and during the entire service life of the electric motor.

Advantageous modifications and improvements of the embodiments specified in the independent claims are possible by means of the measures listed in the dependent claims. Particularly advantageously, the plastic material deformation is carried out by means of thermal caulking, wherein the open edge of the receiving recess is plastically deformed in such a way that it forms an axial positive fit for the cutting-clamping element. Here, the plastic material of the carrier plate of the electrical winding can be melted and deformed, for example by means of a hot embossing punch. As a result, after cooling, a rigid, fixed axial stop for the cutting-clamping element is produced, which reliably prevents the cutting-clamping element from being pulled out of the receiving recess. .

In a preferred embodiment, the cutting-clamping element has at least one pressing-shoulder, at which the auxiliary tool presses the cutting-clamping element axially into the receiving recess . After the cutting-clamping element has been pressed in completely axially, this pressing-shoulder serves as an abutment surface for the plastically deformed material, so that the pressing-shoulder cannot pass from the receiving recess counter to the pressing-in direction. In order to be able to plastically deform the plastic material of the carrier plate, the open edge of the receiving recess protrudes axially beyond the pressing shoulder after the cutting-clamping element has been fully pressed in. Thus, there is sufficient material in the surroundings of the compression-shoulder to deform the material from the open edge to the compression-shoulder.

Particularly advantageously, the pressing shoulder is arranged axially opposite the cutting fork of the cutting-clamping element on the one hand and adjacent to the connecting web of the cutting-clamping element in the circumferential direction of the stator on the other hand . The connecting lugs connect the cutting-clamping elements to the electrical conductor elements of the terminal block. Preferably, the cutting-clamping element is designed in one piece with the conductor element, for example as a punched and bent part. As a result, no additional outlay is required for the production of the cutting-clamping element for the construction of the plastic material deformation, since the pressing-shoulder must in any case be designed for pressing in the cutting-clamping element. Relief grooves can be formed between the pressing shoulder and the web in order to distribute the pressing force evenly over the winding wire when the cutting-clamping element is pressed in.

By forming two caulking points at the two clamping shoulders extending opposite the web, it is possible to reliably prevent the cutting-clamping element from tilting in the receiving recess. For manufacturing reasons, the embossing punch preferably engages on the open edge of the receiving recess at a distance from the web in the circumferential direction. As a result, the hot caulking point is formed at the outer region of the pressing shoulder with respect to the circumferential direction. In this case, the two hot caulking points can be formed simultaneously or one after the other in time at the opposing compression shoulders.

The receiving recesses are formed in the carrier plate, which is placed axially on the metal stator core. The carrier plate insulates the stator teeth from the electrical coils wound thereon. In the outer annular region of the carrier plate, the receiving recesses are preferably designed as axial grooves, which are formed, for example, during injection molding. In this case, the plastic material of the carrier plate is particularly suitable as a plastic material deformation for a hot stamping process or a hot gas riveting process or an ultrasonic stamping process.

The carrier plate is preferably configured as an insulating mask with a plastic ring from which covers for the stator teeth extend radially inwards. In a preferred embodiment, insulating masks are arranged on both axial end faces of the stator core, wherein, in particular, the insulating masks for cutting-clamping elements are formed only on the single end face (=carrier plate) the receiving recess. Here, the metal laminations of the stator core and the two insulating masks each form a closed loop.

The electrical conductor elements are arranged on a terminal block, at the outer ends of which are formed cutting-clamping elements, which are inserted axially together with the cutting-clamping elements on the carrier plate. In this case, the conductor elements are connected to the terminal board, for example by means of latching elements, ultrasonic stamping, hot-air riveting or hot stamping of the terminal board. Here, the connecting lugs are preferably connected to the fastening regions of the electrical conductor elements. In this case, stamped pins can preferably be formed at the fastening region, by means of which stamped pins the conductor element is fixed on the terminal board in a form-fitting manner.

By being fastened to the fastening area, the conductor element can be configured to be elastically movable over a wide area, so that the contact module arranged at the end of the conductor element opposite the cutting-clamping element can also be configured as Movable relative to the terminal block. In order that the different conductor elements do not come into contact with each other when they are elastically deflected, insulating spacers are arranged between them to avoid short circuits.

With the cutting-clamping-connected configuration according to the invention, it is particularly advantageous that the entire stator or a part thereof can be wound by means of a continuous winding wire. Thus, for example, a single-tooth coil is arranged on each stator tooth, which are respectively connected to each other by connecting wires. The connecting wire is here guided through the receiving recess in the radial direction and on the radially outer side to the next stator tooth. Thereby, the connecting line between each two single-tooth coils can be contacted by means of the cutting-clamping element. Thus, independent of the winding process of the single-tooth coils, the coils can be interconnected to each other arbitrarily due to the design of the terminal block and its conductor elements.

In a preferred embodiment, the cutting-clamping element is angled in the axial direction at the end of the conductor element so as to be pressed axially into the receiving recess. For this purpose, the terminal block preferably has an axial slit through which the connecting lug is guided to the cutting-clamping element. After mounting the terminal block and pressing the cutting-clamping element into the receiving recess, a punch punch is then mounted on the open edge of the receiving recess through the slit of the terminal block in order to form the plastic material deformation. For this purpose, the slit in the terminal block is designed to be larger than the actual receiving recess, so that the embossing punch can be mounted on the plastic material of the open edge of the receiving recess. In this way, it is also possible to form thermal caulking points at the open edge of the receiving recess to fix the cutting-clamping element positively after the axial assembly of the terminal block.

In an alternative embodiment, the cutting-clamping element can be directly connected to a connecting pin via a connecting lug, which can for example be embedded directly in an electronic circuit board. In this embodiment, the conductor element is embodied as a conductor on the electronic circuit board, wherein the connecting pins of the cutting-clamping element are in electrical contact with their conductors on the circuit board. Advantageously, the connecting pin is configured as a press-in contact having an eyelet which is compressed when pressed into a corresponding contact opening of the circuit board. With this electrical contact, additional connection processes, such as soldering or welding, can be dispensed with.

According to a further variant of the stator, an adhesive material is inserted between the electrical winding and the terminal block arranged axially thereon, which adhesive material prevents axial springback of the terminal block when it is axially loaded. In this case, the adhesive material is applied to the electrical windings of the individual stator teeth, for example as a plastically deformable substance, and is then deformed when the terminal block is mounted on the carrier plate in such a way that it fills the electrical windings and the electrical windings. Axial cavity between terminal blocks. Here, the dry adhesive material forms a firm, rigid axial stop for the terminal block. The gluing of the terminal block to the wound stator base body prevents the subsequent application of a force on the terminal block with which the cutting-clamping element can be moved relative to the receiving recess and the winding wire arranged therein.

The stator according to the invention is particularly suitable for the production of electric machines, for example electric motors, in which the rotor is arranged radially within the stator as an inner rotor. Here, the stator coils are actuated by an electronic unit in order to rotate the rotor.

In the case of the manufacturing method of the stator according to the invention, the deformation of the axial form-locking plastic material for the press-fit of the shoulders can be constructed afterwards after the mounting of the terminal block to the carrier plate. For this purpose, the embossing punch can engage axially into the terminal block through an axial slit in order to deform the plastic material of the open edge of the receiving recess by means of heat or by means of ultrasound. It is particularly advantageous here that the embossing punch can be inserted into the axial slit in the circumferential direction next to the connecting piece of the cutting-clamping element and the electrical conductor element.

Description of drawings

Embodiments of the invention are illustrated in the accompanying drawings and described in detail in the description below.

The attached figure shows:

Figure 1 A first embodiment of a stator according to the invention,

2 is a side view of a cutting-clamping element fastened according to the invention,

FIG. 3 is a top view of the cutting-clamping element according to FIG. 2, and

Figure 4 Another embodiment of the stator according to the invention.

Detailed ways

FIG. 1 shows the stator 10 , which has a closed ground ring 38 (Rückschlussring) in the circumferential direction 3 on which radial stator teeth 14 are formed to receive the winding wire 22 wound thereon. Single tooth coil 17. In this embodiment, the stator teeth 14 are directed radially inward, so that a rotor, not shown, which is driven by the stator 10 as an inner rotor, can be supported within the stator teeth 14 . The stator 10 consists of individual metal laminations 36 which are stacked on top of each other in the axial direction 2 and connected to form a common lamination stack. The metal laminations 36 are preferably punched out so that the stator teeth 14 are formed integrally with the grounding ring 38 . Arranged on the first axial end face 39 of the laminated core is a carrier plate 40 which preferably completely covers the end face 39 with an insulating material serving as an insulating mask. Preferably, the carrier plate 40 is designed as a plastic injection-molded part, which is mounted axially on the laminated core. The laminated core together with the carrier plate 40 forms the stator base body 34 . The carrier plate 40 has a closed outer circumference 41 radially on the outside on which guide elements 44 are formed which guide the connecting sections 30 of the winding wires 22 between the individual coils 17 . Thus, the carrier plate 40 is the carrier for the electrical windings 20 . The winding wire 22 is guided outwards in the radial direction 4 so as to be guided in the circumferential direction 3 at the radial outer side of the guide element 44 . Furthermore, on the closed outer circumference 41 of the carrier plate 40 , a receiving recess 46 is formed, into which the winding wire 22 is inserted in order to be connected to the cutting-clamping element 70 . The receiving recesses 46 have larger dimensions in the circumferential direction 3 than in the radial direction 4 . Preferably, all receiving recesses 46 are arranged on the same radius with respect to the stator axis. Preferably, the receiving recesses 46 are arranged in the region of the stator slots 16 between the stator teeth 14 . In this embodiment, a receiving recess 46 is assigned to each stator tooth 14 , wherein additional receiving recesses for the ends of the winding wires can be arranged. In an alternative embodiment, two or more single-tooth coils have a common receiving recess. A terminal block 52 is arranged above the wound carrier plate 40 , by means of which the single-tooth coil 17 is actuated. For this purpose, axially extending centering pins 80 are integrally formed on the carrier plate 40 , which centering pins engage in corresponding centering receptacles 81 in the terminal plate 52 . The centering receptacle 81 is designed as an axial bore 82 . During the axial connection of the terminal block 52 , the cutting-clamping element 70 arranged on the terminal block 52 is positioned precisely in relation to the receiving recess 46 and thus reliably contacts the single-tooth coil 17 electrically. After the centering pins 80 have been completely inserted in the axial direction into the corresponding centering receptacles 81 , the axial end regions of the centering pins 80 are plastically deformed in order to form a positive fit with respect to the axial direction 2 . Here, the centering pins 80 are designed together with the carrier plate 40 as a plastic injection-molded part. Thereby, the end region can be deformed by means of hot stamping, so that a pin head 92 is formed at the end region, which has a larger diameter than the centering receptacle 81 . The cutting-clamping element 70 is arranged on the electrical conductor element 54 which is fastened on the terminal board 52 in an electrically insulating manner. The conductor element 54 is designed here as a stamped and bent part on which the cutting-clamping element 70 is formed in one piece. The conductor element 54 has a meander-shaped region 57 which extends transversely to the stator axis in a radial plane. Preferably, the cutting-clamping elements 70 are bent axially in such a way that all cutting-clamping elements 70 extend in the radially outer region in the axial direction 2 to the receiving recess 46 . The cutting-clamping element 70 has a greater width in the circumferential direction 2 than in the radial direction 4 . Centered with respect to the circumferential direction 2 , at the cutting-clamping element 70 , a cutting-fork 72 is formed, which, upon axial connection, moves over the winding wire 22 within the receiving recess 46 . Thereby, a cutting-clamping connection is formed, which is electrically conductive. The cutting-clamping elements 70 are pressed into the receiving recess 46 in such a way that they themselves are centered with respect to the winding wire 22 and are clamped on the inside of the receiving recess 46 , for example by means of shaped latching hooks 74 . In order not to move the cutting-clamping elements 70 in the receiving recess 4 , they are securely fixed in the receiving recess 46 by means of plastic deformations 90 at the open edge 48 of the receiving recess 46 . In this case, the deformed plastic material of the carrier plate 40 bears axially against the pressing shoulders 76 of the cutting-clamping elements 70 , so that they are fastened positively in the receiving recesses 46 .

The conductor element 54 is connected to the terminal block 52 at its radially outer end adjacent to the cutting-clamping element 70 by means of a material deformation. For this purpose, punched pins 64 of the terminal block 54 are engaged into the conductor elements 54 through punched holes 65 , wherein the free ends 66 of the punched pins 64 are deformed into punched heads 67 , in particular by means of an ultrasonic punching process , hot air riveting process or hot stamping process. As a result, all conductor elements 54 in the radially outer region are fixed firmly and immovably on the terminal plate 54 . The meander-shaped region 57 of the conductor element 54 has a plurality of bends 5 . At the end 69 of the conductor element 5 opposite the cutting-clamping element 70 is arranged a contact module 60 which is not directly connected to the terminal block 52 . The contact module 6 has, for example, a plug-in flange 61 for receiving one or more tabs of the corresponding electronic unit. The ends 69 of the conductor elements 54 are encapsulated here, for example, with the contact modules 6 or clamped therein.

The ends 69 form exposed contact tabs 62 within the plug-in flange 61, which contact tabs electrically contact the tabs of the electronic unit.

Another embodiment is shown in FIG. 2 , which shows an enlarged detail of an inserted cutting-clamping-element 70 . The cutting-clamping element 70 is connected to the electrical conductor element 54 by means of connecting lugs 78 , which are not shown here. A cutting fork 72 is formed axially opposite the connecting lug 78 and has a slot for receiving the winding wire 22 . At the inner side of the cutting fork 72, a cutting edge 73 is formed, which, when pushed onto the winding wire 22 through its insulating varnish, is embedded in the winding wire 22 to form an electrical contact. The cutting-clamping element 70 is inserted into the receiving recess 46 which has a larger dimension in the circumferential direction 3 than in the radial direction 4 . The winding wire 22 extends through the receiving recess 46 in the radial direction 4 . Here, the winding wire 22 rests on the contact surface 23 against which the winding wire 22 is pressed during the axial insertion of the cutting-clamping element 70 . On the side edges 73 of the cutting-clamping element 70 , which are opposite in the circumferential direction 3 , latching hooks 74 are mounted, which engage in the receiving recess 46 after the cutting-clamping element 70 has been pressed in. 47 on the inside. In the region of the webs 78 , on the cutting-clamping element 70 a pressure shoulder 76 is mounted, by means of which the cutting-clamping element 70 is pressed axially into the receiving recess 46 . middle. This is achieved, for example, by means of a press-in tool, not shown. In this exemplary embodiment, relief grooves 77 are each formed between the connecting web 78 and the pressing shoulders 76 arranged thereon on both sides in order to be able to better absorb the pressing forces. After the complete axial insertion of the cutting-clamping element 70 into the receiving recess 46 , here at the open edge 48 of the receiving recess 46 , the plastic material of the carrier plate 40 is formed as a plastic material deformation 90 , which plastic The material deformation rests axially on the pressing shoulder 76 . The plastic material deformation 90 is performed, for example, by means of an embossing punch 88 , so that a caulking point 91 is produced at the open edge 48 . These caulking points 91 form an axial positive fit for the pressing shoulder 76 , so that the cutting-clamping element 7 is fastened in a secure, positionally fixed manner in the receiving recess 46 . In this embodiment, caulking points 91 are formed at the two opposing compression shoulders 76 . In this case, the plastic material of the plastic material deformation 90 rests on the pressing shoulder 76 in its outer region 94 with respect to the circumferential direction 3 . In the case of the plastic material deformation 90 , for example, the plastic material is heated and deformed by the embossing punch 88 in such a way that the material rests directly on the pressing shoulder 76 in the axial direction. Alternatively, plastic deformation can also be achieved by means of heated embossing punches or by means of ultrasonic embossing. In this exemplary embodiment, the pressing shoulder 76 extends beyond the cutting fork 72 in the circumferential direction 3 , wherein the receiving surface 49 is formed at the receiving recess 46 for this purpose. In this embodiment, the terminal plate 52 is also arranged axially above the carrier plate 40 . In this case, an axial slot 53 is formed in the terminal plate 52 , through which slot the cutting-clamping element 70 is inserted into the receiving recess 46 . The axial slit 53 is designed so large that, after the cutting-clamping element 70 has been inserted into the receiving recess 46 , the embossing punch 88 can be inserted into the axial slit 53 in order to deform the receiving recess 46 there. the open edge 48. In this case, a caulking point 91 is formed within the axial slit 53 , which caulking point fixes the cutting-clamping element 70 in the receiving recess 46 . In the case of this fastening method according to the invention, the open edge 48 of the receiving recess 46 has an area which projects axially beyond the pressed-in compression shoulder 76 in order to be able to use The embossing punch 88 over the tight-shoulder 76 is deformed. Here, the caulking point 91 has a sufficient axial material thickness 92 to serve as a fixed axial stop if an axial pulling force attempts to pull the cutting-clamping element 70 out of the receiving recess 46 .

In FIG. 3 , a plan view of the embodiment according to FIG. 2 is shown in a simplified manner without terminal board 52 . The carrier plate 40 has a closed circumferential ring 41 at which the covers 15 for the stator teeth 14 extend radially inwards. Here, for example, groove structures 13 are formed on the cover 15 , into which the winding wires 22 for forming the single-tooth coil 17 are inserted. The winding wire 22 is guided outwards, for example, after the winding of the single-tooth coil 17 on the stator teeth 14 has been completed, and is deposited on the abutment surface 23 of the receiving recess 46 . Here, the winding wire 22 forms the connection region to the next single-tooth coil 17 , which is not shown in FIG. 3 . For this purpose, the connecting wires 30 at the guide elements 44 of the carrier plate 40 are guided in the circumferential direction 3 along the outer circumferential ring 41 and, for example, are wound further on the directly adjacent stator teeth 14 . In an alternative, not shown, embodiment, the winding wire 22 can also form a wire beginning or a wire end, which is held in the guide element 44 . In this way, for example, a plurality of single-tooth coils 17 of the stator 10 can be wound with interrupted winding wires 22 , wherein the winding wires 22 are laid behind each coil by means of the receiving recesses 46 in order to be able to respectively cut- Clamp-elements 70 come into contact with each coil 17 . Here, coil sets of two, three or more stator teeth 14 or all stator teeth 14 of the stator 10 can be wound continuously. It can be seen in the plan view how the caulking point 91 forms a positive fit with the pressing shoulder 76 with respect to the axial direction 2 . In this exemplary embodiment, only the outer region 94 of the compression shoulder 76 with respect to the circumferential direction 3 is covered with the deformed material of the caulking point 91 . The precise shape of the caulking point 91 can vary. For example, in FIG. 3 , the boundary of the thermal caulking point 91 inclined with respect to the radial direction 4 is constructed on the left, and the boundary of the caulking point 91 in the radial direction 4 is constructed on the right. The extent of the receiving recess 46 and the cutting-clamping element 70 arranged therein is greater in the circumferential direction 3 than in the radial direction 4 and is arranged approximately tangentially in the circumferential direction 41 .

Another embodiment is shown in Figure 4 in which a plurality of stator teeth 14 are wound continuously. The winding wire 22 is guided radially outwards through the receiving recess 46 as the connecting wire 30 . The cutting-clamping element 70 is fastened to the terminal block 52 by means of connecting lugs 78 . Here again, the electrical conductor element 54 is connected by means of the hole 65 to the stamped pin 64 of the terminal block 54 , the free end of which is transformed into a stamped head 67 . The electrical conductor element 54 connects the contact module 60 to the electrical winding 20 via the cutting-clamping element 70 . The cutting-clamping element 70 is again firmly fixed in the receiving recess 46 by means of the plastic material deformation 90 of the carrier plate 40 .

Before mounting the wiring board 52, a plastically deformable adhesive material 100 is applied to the electrical windings 20 in this embodiment. For example, the adhesive material 100 can be applied to each single-tooth coil 17 . Thereafter, the wiring board 52 is pressed into the receiving recess 46 by means of the cutting-clamping element 70 , so that the wiring board 52 rests directly on the adhesive material 100 in the axial direction. By hardening of the adhesive material 100 , the terminal block 52 is thus fixed and rigidly connected to the electrical winding 22 . Preferably, then in this embodiment, a caulking point 91 is formed at the open edge 48 of the receiving recess 46 by means of the embossing punch 88 in order to non-releasably fix the cutting-clamping element 70 in the receiving recess In 46 , the embossing punch passes through the axial slit 53 of the terminal plate 52 . If the insertion element is now inserted into the contact module 60 in the axial direction 2 in a subsequent processing step, both the wiring board 52 and the cutting-clamping element 70 remain unchanged in their firmly fixed position. In this way, it is ensured during assembly of the electric motor 9 and throughout its service life that the electrical windings 20 remain in reliable electrical contact by means of the cutting-clamping-connection.

It should be noted that, in view of the embodiments shown in the drawings and in the description, numerous combinations of individual features with each other are possible. Thus, for example, the specific configuration, arrangement and number of coils 17 and the configuration and number of receiving recesses 46 can vary. The specific location and configuration of the cutting-clamping elements 70 and the caulking points 91 can also be adapted to the requirements and manufacturing possibilities of the motor 9 . By means of the conductor elements 54 , various interconnections, such as delta or star connections of the individual phases, can be realized in the terminal block 52 . In a particular way, the invention is suitable for the rotational drive of components or the adjustment of components in motor vehicles, but is not limited to these applications.

Claims (15)

1. A stator (10) for an electric machine (9) having a stator base body (34) with radial stator teeth (14) for receiving electrical windings (20), wherein the The electrical winding ( 20 ) is connected to the terminal block ( 52 ) by means of a cut-clamp connection, wherein a receiving recess ( 46 ) with an open edge ( 48 ) is formed on the stator base body ( 34 ), where the receiving recess ( 46 ) is formed. A winding wire ( 22 ) of the electrical winding ( 20 ) is inserted into the receiving recess, wherein a cutting-clamping element ( 70 ) is formed at the terminal block ( 52 ), the cutting-clamping element ( 70 ) ) pressed into the receiving recess ( 46 ), wherein the cutting-clamping element ( 70 ) is fastened to the opening in the receiving recess ( 46 ) by means of a plastic material deformation ( 90 ) edge (48). 2 . The stator ( 10 ) according to claim 1 , wherein the plastic material deformation ( 90 ) is configured as at least one caulk point ( 91 ) at which the opening is remelted. 3 . Plastic material for edge (48). 3 . The stator ( 10 ) according to claim 1 , wherein the cutting-clamping element ( 70 ) has a pressing shoulder for pressing into the receiving recess ( 46 ). 4 . Section ( 76 ), the pressing-shoulder extending transversely to the pressing-in direction ( 2 ), wherein the plastic material of the open edge ( 48 ) rests directly on the plastic material due to the plastic material deformation ( 90 ). The compression-shoulder (76). 4. The stator (10) according to any one of the preceding claims, characterized in that the cutting-clamping-element (70) has a cutting-fork (72) having a profile formed in it cutting edge ( 73 ) on the upper and, in the pressing-in direction ( 2 ) opposite to the cutting fork ( 72 ), at the cutting-clamping element ( 70 ) is formed to the electrical conductor element The connecting piece (78) of (54), wherein the compression-shoulder (76) extends on both sides to the connecting piece (78), and, in particular, between the connecting piece (78) and all A relief groove (77) is constructed between the compression-shoulders. 5 . The stator ( 10 ) as claimed in claim 1 , wherein the two pressing shoulders ( 76 ) of exactly one cutting-clamping element ( 70 ) rest against plastic Material deformation ( 90 ), in particular in the region of the compression shoulder ( 76 ) facing away from the web ( 78 ). 6 . The stator ( 10 ) according to claim 1 , wherein the stator base body ( 34 ) consists of individual axially stacked metal laminations ( 36 ) and has a At least one carrier plate ( 40 ) made of plastic insulating the windings ( 20 ), wherein the receiving recess ( 46 ) is formed in the carrier plate ( 40 ) and, in particular, the carrier plate ( 40 ) The plastic is deformed into the plastic material deformation (90). 7. Stator (10) according to any of the preceding claims, characterized in that the carrier plate (40) has a closed circumferential ring (41), radial covers of the radial stator teeth (14) (15) extends from the circumferential ring, wherein the receiving recesses (46) are arranged in the region of the circumferential ring (41), and preferably the radial stator teeth (14) with their covers (15) extend from The circumferential ring (41) extends radially inwards. 8 . The stator ( 10 ) according to claim 1 , wherein the electrical conductor element ( 54 ) is immovably fixed to the terminal block ( 52 ) by means of fastening regions ( 108 ). 9 . and the free end ( 68 ) of the conductor element ( 54 ) forms the cutting-clamping element ( 70 ) and is constructed at the opposite end of the conductor element ( 54 ) Contact ( 60 ) for energizing the electrical winding ( 20 ), wherein in particular the fastening region ( 108 ) is formed as a stamping of the terminal block ( 52 ) in order to connect the conductor element ( 54) is fixed at the terminal board (52). 9 . The stator ( 10 ) according to claim 1 , wherein the conductor elements ( 54 ) are arranged elastically deformable in axially spaced planes and, with respect to their radial planes. 10 . overlapping each other, wherein, in particular at the terminal block ( 52 ), insulating-spacers ( 50 ) are formed between the conductor elements ( 54 ), where the conductor elements ( 54 ) are in the same radial plane very close. 10. The stator (10) according to any one of the preceding claims, characterized in that a single-tooth coil (17) with a continuous winding wire (22) is wound on at least two adjacent stator teeth (14) ), wherein a connecting line ( 30 ) between the at least two single-tooth coils ( 17 ) is guided at the radial outer side of the carrier plate ( 40 ), wherein the connecting line ( 30 ) is formed by At least one receiving recess ( 46 ) is provided in order to contact the individual single-tooth coils ( 17 ) by means of the cutting-clamping element ( 70 ). 11. The stator (10) according to any one of the preceding claims, characterized in that the terminal plate (52) is placed axially on the carrier plate (40), wherein the conductor element ( The cutting-clamping-element (70) of 54) engages into the receiving recess (46) axially through the slit (53) in the terminal plate (52), in order to construct the cutting-clamping Tight-connection, wherein the axial slit (53) is configured so large that an embossing punch (88) can pass through the slit (53) to plasticize the open edge (48) of the receiving recess (46) deformed. 12 . The stator ( 10 ) according to claim 1 , wherein a connecting pin is formed on the connecting piece ( 78 ) opposite the cutting fork ( 72 ), the connecting pin being in particular is with a press-in eyelet, the connecting pins can be inserted directly into an electronic circuit board configured as a terminal block (52) on which the electrical conductors for energizing the electrical winding (20) are arranged element (54). 13. The stator (10) according to any one of the preceding claims, characterized in that axially between the electrical winding (20) and the terminal block (52), in particular in each single A curable adhesive material ( 100 ) is arranged on the tooth coil ( 17 ), which adhesive material rigidly connects the terminal plate ( 52 ) to the electrical winding ( 20 ). 14. Electric machine (9) with a stator (10) according to any of the preceding claims, characterized in that the stator base body (34) is inserted into the motor housing, wherein the rotor passes through the The bearing caps in the motor housing are supported within the stator (10), and preferably the electronic unit for actuating the electrical windings (20) is arranged axially above the terminal block (52) . 15. Method for manufacturing a stator (10) according to any one of claims 1 to 13, characterized by the following method steps: - the electrical winding ( 20 ) is wound on the stator base body ( 34 ) with the carrier plate ( 40 ) by means of the winding wire ( 22 ), wherein the winding is guided after winding the individual stator teeth ( 14 ) The wire (22) passes radially through the receiving recess (46) for the cutting-clamping-element (70), - optionally, applying an adhesive material (100) to the electrical winding (20), the adhesive material being cured after the mounting of the terminal block (52), - the terminal block (52) is axially connected to the carrier plate (40) in such a way that the cutting-clamping element (70) of the terminal block (52) is axially engaged to the receiving recess (46) in order to make electrical contact with the winding wire (22), - the open edge ( 48 ) of the receiving recess ( 46 ) is deformed by means of an embossing punch ( 88 ) by a hot stamping process or a hot gas riveting process or an ultrasonic stamping process in such a way that the plastic shaft of the carrier plate ( 40 ) It rests on the pressing shoulder ( 76 ) of the cutting-clamping element ( 70 ).

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