• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    Stator circuit plate (10) of an electric machine and its method of manufacture The plate (52) is a plastic part with a closed ring (61) provided in one piece with three axially extending fastening elements (63) and in which there are axial branching pins ( 54) made of metal. The pins (54) are made in one piece with the conductive elements which are electrically connected directly to the connecting cables of the electric winding.
    公开号:FR3031422A1
    申请号:FR1650101
    申请日:2016-01-07
    公开日:2016-07-08
    发明作者:Konstantin Haberkorn；Tamas Csoti
    申请人:Robert Bosch GmbH；
    IPC主号:
    专利说明:

    [0001] Field of the Invention The present invention relates to an electric machine stator cabling plate as well as to an electrical machine and to its manufacturing process.
    [0002] State of the art DE 10 2010 000 710 A1 describes a bearing panel of an electric machine serving at the same time as a wiring plate for the electric winding of the stator. The electrical winding is in the form of a single winding with stator segments manufactured and wound separately to then be assembled to form an annular stator. Each separate winding has its winding start and its winding end. These beginning and end pass axially through holes in the bearing panel. These beginning and end of the cable are welded to the conductive elements to allow the different phases to be electrically powered by the branch connectors. The production of such conductive elements and their assembly are very complicated. OBJECT OF THE INVENTION The object of the present invention is to provide a means for simplifying the wiring board with the branch connectors to be connected to the customer's specific connector purchasing the electrical machine so that the wiring boards can be installed independently. of the bearing panel. DESCRIPTION AND ADVANTAGES OF THE INVENTION For this purpose, the subject of the invention is a wiring plate in the stator of an electrical machine for connecting the electrical winding of the stator to customer-specific connection connectors for the power supply. the plastic body-shaped wiring board having a closed ring on which are formed in one piece exactly three fastening elements extending in the axial direction and which each receive axially from the metal branching pins, oriented axially, these pins being each made in one piece with the conductive elements that can be electrically connected directly to the connecting cables of the electrical winding.
    [0003] Thus, the device and method according to the invention have the advantage, thanks to the realization of the fastening elements for the connection pins in the form of axial extensions in one piece with the plastic plate, that during the setting up the connection connector they are supported in a very safe way in all directions of space. This makes it possible to realize and mount in a very simple and economical way both the plastic body of the wiring plate and also the conductive elements attached thereto with the integrated connection pins.
    [0004] The invention also relates to a method of manufacturing a wiring plate, characterized in that by injection, the ring-shaped plastic body is first produced and the three fastening elements in one piece. on this body and then engage the three connecting pins, identical with the conductive elements, folded - especially all three simultaneously - axially along the first and the second guide surfaces to engage them in the fasteners so that the securing segments of the first branch cut radially the second branch of the conductive elements.
    [0005] The conductive elements are advantageously made by stamping a sheet which is folded the connecting pins so that they are oriented in the axial direction of the rotor shaft. The flat sheet of the connecting pin is thus oriented transversely to the peripheral direction while the remainder of the conductive element, folded extends flat in a plane transverse to the rotor shaft, in the peripheral direction. In this embodiment, the median portions of the conductive elements thus bear very simply, axially against the plastic annular body of the wiring plate and the connecting pins, axially bent, are supported at the same time in the elements. fasteners axially oriented. The conductive elements are preferably fixed by plastic transformation of the plastic body against it. As the connection pins are sheet metal tabs of the stamped box, they realize in a very simple manner a knife clamp connection for the corresponding connection connectors.
    [0006] As the connecting pins, flat extend in the radial direction and in the axial direction they are supported particularly well by the guide surfaces and the fasteners which also extend in the radial direction and the axial direction. According to a preferred development, the connection pins have crosspieces which extend in the radial direction of their plate. If the connection connectors are plugged in, only axial force is exerted on the connection pins; this force will be received by the axial abutment surfaces of the fasteners. Regardless of the mounting tolerances of the conductive elements, this always allows a clearly defined reference point in the axial direction for the connection. For mounting of the conductive elements in the fastening elements, the latter have slots in the axial direction which are at least as wide in the radial direction as the middle ranges of the conductive elements. This makes it possible to insert the conductive elements with the connecting pins, bent, axially, into the fastening elements so that the curved median area of the conductive element exits through the slot in the circumferential direction. According to a development of the wiring plate there are exactly three axial extensions as fixing elements and in each fastening element, two adjacent connecting pins are introduced so that with a total of six connection pins, it is possible to order six different phases of the electric motor. To support the two connecting pins, the fastener element has a middle branch which extends flat in the radial direction and in the axial direction. Each branch pin can be applied against this middle branch against the opposite outer surfaces in the circumferential direction. To support the branching pin each time in the two peripheral directions, there is practically, parallel to the guide surfaces of the middle branch, opposite, spaced surfaces, against which bear in the peripheral direction, the branch pins or at the least their transverse branch. According to a variant of the wiring plate in which, in an axial fastening element, only one branch pin is always introduced each time, it is advantageous to have two branches for the conductive element in the two opposite peripheral directions. Thus we reduce the number of parts and editing work. The two branches of the conductive elements are advantageously juxtaposed in the radial direction while being in different planes in the axial direction so that the branches do not touch. This avoids additional insulation. To connect the conductive elements to the radially outgoing connecting cables of the coil parts, the conductive elements or each branch of a conductive element comprise fixing segments. The fixing segment is advantageously made in one part with the stamped part and the securing segment of the inner branch is spaced axially from the outer branch of the other conductive element. In order that the bent or folded portions of the two opposite branches can be introduced axially into the fastening elements, their first and second guide surfaces spaced apart in the circumferential direction are made so that these surfaces do not overlap in the radial direction. Thus, the two branches of a sheet metal member of the connecting pin can be folded each time in the opposite direction by about 90 ° and thus be axially introduced into the guideways of the fastening elements. To have the rotation lock of the bearing cover which is mounted axially on the wiring plate, an axial extension of a single fastener has another section different from that of the other two fasteners. For example, a fastener will be wider in the circumferential direction and a single axial passage of the bearing panel will have a corresponding width. By injection is carried out the wider fastening element, in a particularly advantageous manner, by providing a fastener in two parts. The two axial extensions each have a U-shaped section so that the free branches are oriented toward each other in the peripheral direction. The end faces of the free limbs advantageously form the first and second guide surfaces which are spaced apart in the circumferential direction to allow insertion or pinching of the branch pin. To precisely define the axial position of the connection pin, the wiring plate rests directly against the stator body by spacers. As between the wiring plate and the stator body, there is the insulating lamella with the guiding elements for the connecting cables, thus eliminating the tolerance deviations of such insulating lamellae. The spacers are advantageously also made in one piece with the plastic body of the wiring plate, preferably as injected part. The spacer members advantageously extend axially with respect to the fastening elements in the outer radial zone, which prevents the bending of the wiring plate in the region of the connection pin when the connector is installed. link. To fix the conductive elements to the wiring plate, its plastic body carries rivet rods oriented in the axial direction and made in one piece and which, after placing the conductive elements, they are thermally transformed on the body of plastic material. The conductive elements have particularly advantageous holes in the sheet to allow the rivet rods to pass through and these rods then make the connection. Particularly advantageously, the stator of the invention comprises a circuit board with one-piece conductive elements in the form of parts stamped each time with two pairs of coil parts which are radially facing each other and are electrically connected, each connecting pin being controlled as phase by the control unit. The conductive element is advantageously of stamped sheet metal without leaving much cutting because initially the two branches are substantially parallel in the same plane of the connecting pin. Only in the second step is it folded about 90 ° and in opposite directions, the two branches relative to the sheet of the connecting pin to form a conductor element substantially in the shape of a semicircle and whose middle corresponds to the axial connection pin. In the electrical machine according to the invention, the stator is wound so that two directly adjacent stator teeth are wound with precisely the same coil portion to form with the winding wire a pair of coil portions. The wire (or cable) connecting these directly adjacent coil portions passes for all pairs of coil parts in the same axial plane of the insulating lamella. In the case of a stator with twelve teeth, there will thus be, for example six pairs of coil parts made with each time six pairs of short connecting cables; the six short connecting cables each form the interface with the fixing segments of the conductive elements. Thus, in a simple manner, one will have the choice of six separate pairs of phases with each time a pair of coil parts or only three phases with each time two pairs of electrically connected coil parts. Correspondingly, in the wiring plate, there will be three branch connectors for three phases or six branch connectors for six phases, these connectors being formed in the axial direction. According to the manufacturing method of the wiring plate of the invention, the three one-piece conductive elements are first installed with the accessory device to form a ring so that the securing segments cross radially. Then, and with an auxiliary tool is installed all three conductive elements, simultaneously axially on the plastic body; the connecting pin is inserted axially each time into the guide ducts of the axial extensions of the fastening elements which prevents the conductive elements need to be folded after their axial mounting in the radial direction. Drawings The present invention will be described hereinafter in more detail using electric machine stator wiring plates and the manufacturing method shown in the accompanying drawings in which: Figure 1 is a schematic diagram of According to the invention, FIG. 2 shows a conductive element of a wiring plate according to the invention, FIG. 3 shows a first embodiment of a wound stator with insulating lamellae, FIG. FIG. 5 and 6 show an exemplary embodiment according to FIG. 3 with a first embodiment of an installed wiring plate, FIGS. 7 and 8 show an example of FIG. embodiment according to Figure 3 with a second embodiment of wiring plate reported, Figure 9 shows the wiring plate of Figures 7 and 8 without the stator, and Figure 10 shows a conductive element, stamped before being re folded. DESCRIPTION OF EMBODIMENTS FIG. 1 schematically shows a stator 10, developed whose stator teeth 14 represent the winding diagram of the electric coil 16. The stator 10 has for example 12 teeth 14; each stator tooth 14 always carries exactly one coil portion 18. Each time two directly adjacent coil portions 18 are connected by a short connecting cable 31 with the pair of adjacent coil portions 17. During winding, for example, a first start of cable 28 is started on the second stator tooth 14 and the connecting cable 30 is directed towards the fifth stator tooth 14. Directly after the fifth tooth 14, the sixth tooth is wound around the sixth Stator tooth 14 so that this pair of coil portions 17 is connected with the short connecting cable 31 of two directly adjacent coil portions 18. After the sixth tooth 14 the winding cable 22 is directed with the connecting cable 30 to the third stator tooth 14 to make a pair of coil portions 17 connected by the connecting cable 31 with the fourth stator tooth 14. A from the fourth stator tooth 14 and the winding cable 22 is led with the connecting cable 30 to the first stator tooth 14 so that the cable end 29 of the first winding cord 24 is directly adjacent to the beginning of cable 28. The second winding cord 25 is wound with a second separate winding cable 22 corresponding to the winding of the first winding bead 24 so as to form three pairs of coil portions 17 with the directly adjacent coil portions 18 and which are connected by a short connecting cable 31. The beginning of the cable 28 and the end of the cable 29 of the two winding cords 24, 25 are electrically connected. In this embodiment, after having wound two pairs of coil portions 17 for a phase 26, we always obtain exactly three phases U, V, W with each time four coil parts. The first three pairs of coil portions 17 form a clean winding cord 24 which has been made with a separate winding cable 22 and which is insulated from the second winding cord 25 also having three pairs of coil portions 17 ; this is represented by a broken line between the sixth and the seventh stator teeth 14. Thus, for such a winding, six distinct phases can be controlled 26. In this embodiment, however, only two pairs of electrodes are electrically connected. precisely radially opposed coil portions 17 from different winding cords 24, 25 connecting them to conductive members 58 of a wiring plate 52 so as to reduce the electronic means of the control apparatus. Such a conductive element 58 used, for example, to control the phase V of FIG. 1 is shown separately in FIG. 2 and will be described in more detail with the aid of the second embodiment. FIG. 3 shows a perspective view of a stator 14 wound according to the winding diagram of FIG. 1. The stator 14 has a stator body 34 composed, for example, of metal lamellae 36, which are separate. The stator body 34 consists of a closed annular flow return yoke 38 on which stator teeth 14 turned radially inwards are formed. The stator body 34 has a closed, ring-shaped flux return yoke 38 provided with stator teeth 14 facing radially inwards. Inside, the stator 14 has a circular recess which receives a non-detailed rotor. This appears better in FIG. 4. The stator teeth 14 being in the radial direction 4 inwards and in the axial direction 3 along the axis of the rotor. In the exemplary embodiment, the stator teeth 14 are narrowed in the peripheral direction 2 to reduce the coupling torque of the rotor. Thus, one rotates toward each other, for example the sheet metal strips 36 in the peripheral direction 2. Before winding the stator body 34 is applied the insulating strips 40 on both axial end faces 39 to electrically isolate the winding cable 22 with respect to the stator body 34. At least one of the two insulating lamellae 40 has a closed, annular periphery 41 from which insulative teeth 42 extending in the radial direction 4 emerge. and covering the end face 39 of the stator teeth 14. The annular periphery 41 of the insulating lamellae 40 produces guide elements 44 in which the connecting cables 30, 31 are guided between the coil portions 18. , the periphery 41 has grooves 45 in the peripheral direction 2 so that the connecting cables 30, 31 are in axially offset planes, to avoid the crossing of the connecting cables 30, 31. The short cables e connection 31 between the pairs of coil portions 17 are in the upper axial plane; in particular, all six connecting cables 31 for contacting the phase connections are all directed in the same axial plane. For this, there are always two coil portions 18 of a pair of coil portions 17 forming two axial extensions 46 separated from each other by the radial, intermediate through passage 47. Thus, the short connecting cables 31 of the pairs of coil portions 17 are accessible above all freely from the outside on all sides and they are located in particular in the region of the radial passage 47 and not on the insulating lamellae 40. The two beginnings of FIG. cable 28 and the cable end 29 are fixed in this embodiment, in a labyrinth device 50 which is each in the peripheral direction 2, directly adjacent the two axial extensions 46 generated by the radial passage 47. Thus 3 shows the beginning of the cable 28 of the first winding cord 24 which passes into the peripheral zone of the radial passage 47, parallel and then directly towards the cable end 29 of the first winding cord 24. The beginning of the cable 28 is in a first labyrinth device 50 on a first side of the radial passage 47 and the cable end 29 of the first winding cord 24 is in a second ispositif labyrinth 50 in the peripheral direction 2, opposite the radial passage 47. Through this parallel arrangement of the short connecting cables 31, it is also possible to electrically connect the pairs of coil portion 17 for the phase control of the same way as with the connecting cables 31.
    [0007] Figure 4 also clearly shows that the two connecting cables 30, 31, parallel, are on the same radius. The free ends of the beginning of the cable 28 and the end of the cable 29 terminate directly after the corresponding labyrinth device 50 so as not to protrude radially from the connecting cables 30, 31. The connecting cables 30, 31 all pass in the direction 2 along the guide member 44 and thus lie outside the coil portions 18 wound on the stator teeth 14. FIG. 4 shows the two schematic engine halves 11, 13, also separated by a line in a line-point; the left half of the motor 11 is electrically isolated from the right half 13 of the motor. The electric winding 16 is for example made with a cable winding. The connecting cables 30, 31 between the coil portions 18 arrive radially outwardly through the coil head and into the guide elements 44. In this embodiment, all the connecting cables 30, 31 are axially on one side of the stator body 34. According to another variant, not shown, a portion of the connecting cables 30, 31 is deposited on the opposite axial side of the stator 10. Thus, for example the short connecting cables 31 may be mounted to contact the phase control in a first insulating lamella 40 and the other connecting cables 30 which connect the different pairs of coil portions 17 to each other, arrive on the insulating lamella 40 located axially. on the opposite side. In FIG. 5, a first embodiment of a wiring plate 52 controlled by an electric coil 16 has been applied to the embodiment of the stator 10 of FIG. 3. For this, the wiring plate 52 comprises a connector branch 54 which receives the customer-specific connector connector 56 of a control apparatus. In this embodiment, there are precisely six branch connectors 54 which are electrically connected each time with a pair of coil portions 17 of the electrical winding 16. For this purpose, six phases 26 are formed with each pair of coil portions 17 so that the six branch connectors 54 are precisely connected to six connecting cables 31 coming from pairs of adjacent coil portions 17. The connection plate 52 here comprises six conductive elements 58, one end of which is axially curved, has the branch connectors 54 and the other end has an attachment segment 60 electrically connected to the connecting cable 31, for example by means of a weld .
    [0008] The wiring plate 52 has a plastic body 62 on which is formed a ring 61 connected to insert the rotor in the stator 10. The fasteners 63 are formed in one piece on the plastic body 62; these elements extend in the axial direction 3 starting from the stator body 34.
    [0009] The conductive elements 58 extend in the peripheral direction 2 along the plastic body 62; the connecting pins 54, bent into the fastening elements 63, in the axial direction 3. At the other end, the conductive elements 58 comprise the fixing segment 60 whose free end is in the form of a loop 64 which surrounds the connecting cables 31. The loop 64 is made of a sheet whose section is substantially rectangular. In the exemplary embodiment, the conductive elements 58 are stamped parts 59 made of sheet metal; the loop 64 is bent at the free end of the fixing segment 60 for mounting around the connecting cable 31. After the introduction of the loop 64 open around the connecting cable 31 is applied for example electrodes against both surfaces radially opposite the loop 64; the electrodes are compressed in the radial direction and fed with current to weld the loop 64 to the connecting cable 31. At this point, the insulating varnish of the connecting cable 31 melts, and a solid, metallic bond is formed between the fixing segment 60 and the connecting cable 31. The loop 64 is placed around the connecting cable 31 in the region of the radial passage 47 because in this zone there is no guide element 44 between the cable link 31 and the loop 64. There is thus sufficient free space to apply the electrodes so that the free end 65 of the branch of the loop 64 is pressed against the securing segment 60 to thereby close the loop 64. The loop 64 thus surrounds for each pair of coil portions 17 only a single connecting cable 31 or at the same time two parallel connecting cables 31, formed with the beginning of the cable 28 and the end of the cable 29 in a single bead. 24, 25. The spindles The branch 54 is for example formed as a knife clamping pin 55 whose free axial end 68 has a notch 69 into which the cable or a clamping element of the corresponding connector 56 of the customer is inserted.
    [0010] The branch connector 54 further comprises a cross member 70 in the radial direction 4 which bears against a corresponding axial abutment 72 of the fastening element 63. The fastening element 63 also comprises a first guide surface 74 and a second guide surface 75 which support the connecting pin 54 in the two opposite peripheral directions 2. This prevents the connection pin 54 from bending during the insertion of the connector 56, in the peripheral direction 2, which guarantees the axial tolerances of the connector. The conductive elements 58 are at least partially radially juxtaposed so that it is necessary for the securing segments 60 of the inner conductive elements 58 to pass radially through the outer conductive elements 58 in order to be in contact with the connecting cables 31. This is why the radially inner conductive elements 58 are on an axial path 67 the highest of the plastic body 62 and the radially outer conductive elements 58 are on a path radially lowest. The middle segments 78 made in the form of sheet tapes of the conductive elements 58 are surface-connected to the plastic body 62 and are for example connected by rivets or fastening elements thereto. Thus, for example, the plastic body 62 comprises axial rivets 79 which pass through corresponding axial passages 80 of the conductive elements 58. By a thermal process, in particular by ultrasonics, the ends of the rivet pins 79 can be shaped. and to give them a rivet head shape 81 which forms a connection with the conductor elements 58. In the embodiment of FIGS. 5 and 6, there are always two connection pins 54 installed in an element fastener 63 common; the two pins are separated from each other in the peripheral direction 2 by the middle branch 82 of the fastening element 63. The middle branch 82 forms on both sides, each time a first and a second guide surface 74 75 for the connecting pins 54. The second and first guide surfaces 75, 74 each facing the middle branch 82 are formed by corresponding opposing surfaces 83 which extend in the radial direction 4 and in the axial direction 3. In the region of the fasteners 63 (in axial opposition) spacers 84 are formed which support the wiring plate 52, axially with respect to the stator body 34. In the example of FIG. 5 and 6, a fastener 63 has a larger width 85 in the circumferential direction 2 than the other two fasteners 63. A rotation lock is thus created for the bearing cover n. it is shown that which is axially assembled with axial openings formed correspondingly on the fastening elements 63. FIG. 6 shows how the two connection pins 54 are applied on both sides against the central branch 82. Each time it is bent in opposite peripheral directions 2, the middle segment 78 of the paths 76, 77, which do not touch each other.
    [0011] The radially juxtaposed conductive elements 58 are axially isolated in different ways. The inner ring of the plastic body 62 is slightly corrugated so that a punch can be applied against the inner ends of the stator teeth 14, directly on the side surfaces. This makes it possible to drive the stator 10 into the illustrated motor housing.
    [0012] According to FIG. 7, in the embodiment of the stator 10 of FIG. 3, as another embodiment, a variant of the wiring plate 52 has been applied to control the electrical winding 16. This embodiment corresponds to the control with precisely three phases U , V, W according to the diagrammatic representation of FIG. 1. In this embodiment, the wiring plate 52 has three connection pins 54 (connection plugs) which can receive the customer specific connector connector 56 for a device. control. Each connection pin 54 is part of a conductive element 58 which electrically connects a first pair of coil portions 17 to a second pair of coil portions 17 (and in particular a second precisely opposed pair in the radial direction). ). For this, starting from the connecting pin 54 extending in the radial direction 3, there is a first branch 90 and a second branch 91 curved in the peripheral direction 2. The two branches 90, 91 form a semicircle and extend along the annular body 62 of plastics material; the branches have at their opposite ends to the connection pin 54, fixing segments 60 for the electrical connection with the connecting cables 30, 31 of the coil portions 18. The first branch 90 of a first conductive element 58 is located radially inside the second leg 91 of a second conductive member 58. The attachment segment 60 of the first inner leg 90 thus crosses the second outer leg 91 of the second conductive member 58 in the radial direction 4 without touching this element. . Thus, the radially inner branches 90 are on an axial path 76 higher than the outer radial branches 91 which are on a lower axial path 77 of the plastic body 62. The conductive elements 58 made in the form of sheet metal ribbons are applied on the surface against the plastic body 62 and are for example connected thereto by rivet connections 79, 81 or fastening elements. For this purpose, the plastic body 62 comprises, for example, axial rivet pins 79, which penetrate into the corresponding axial passages 80 of the conductive elements 58. By applying heat, in particular by ultrasonics, it is thus possible to transform the ends of the rivet pins 79 for forming a rivet head 81 which is formally bonded to the conductive member 58. Thus, for example, each leg 90, 91 attaches to the wiring plate 52 with two heads Rivet 81 as shown in particular in Figure 8. The plastic body 62 has fasteners 63 formed in the mass and which deviate from the stator body 34 in the axial direction 3 and receive the pins of 54. The connection pins 54 are for example made as shown in Figure 5, also as clamping connections and knife 55; and they then have a free axial end 68, a notch 69 in which is inserted a cable or a clamping element of the connecting connector 56 of the customer. The fasteners 63 of this exemplary embodiment are in two parts. A radial inner axial extension 92 forms a first guide surface 74 in a first peripheral direction 2 and an outer radial axial extension 93 forms the second guide surface 75 for the opposite peripheral direction 2. The axial extensions 92, 93 are offset in the circumferential direction 2 to have the branch connector 52 in the axial direction 3 between the guide surfaces 74, 75. The axial extensions 92, 93 each have a surface area. support 95 for the radial direction 4 against which radially supports the connecting pin 54. For this, the axial extensions 92, 93 have for example a section 96 L-shaped or U transverse to the axial direction 3. Compared to the axial direction 3, the cross member 70 which projects radially rests against the axial stops 72 of the fastening element 63. The axial extensions 92, 93 are offset in the radial direction 4 so as not to overlap in this direction 4. Thus, in both peripheral directions 2, the fastening elements 63 have apertures 98 through which the two branches 90, 91 emerge from the fastening element 63 in two directions peri pheric 2, opposite. For the conductive member 58 to be axially mounted in the fasteners 63, the openings 98 are open upwardly in the axial direction 3. The curved portions 100 of the legs 90, 91 for the branch connector 54 are radially juxtaposed and lie axially in different planes so that the branches 90, 91 arrive on the paths 76, 77 axially different from the plastic body 62.
    [0013] FIG. 8 shows that the branches 90, 91 are located radially in the region of the stator teeth 14 and radially inside the guide elements 44 of the insulating lamellae 40. The three fastening elements 63 are evenly distributed in the peripheral direction 2 with a difference of about 120 °. As a means for locking in rotation a fixing element 63 has a width 85 greater in the circumferential direction 2. For this, the two axial extensions 92, 93 have a U-shape so that their free branches 87 are turned around. to one another in the circumferential direction 2. The end faces 88 of free limbs 87 thus form guide surfaces 106 in the circumferential direction 2 (they correspond to the first and second guiding surfaces 74, 75) between which there is the connecting pin 54. As shown in particular in FIG. 9, a spacer 84 formed on the plastic body 62 is in one piece with the fastening element 63, axially opposite it. this. The spacers are applied axially against the stator body 34. The free ends of the fastening segments 60 are made as in FIG. 5 in the form of loops 64 which are still open before mounting of the conducting elements 58 and which, after mounting, surround the connecting cables 31. Figure 10 shows a conductive member 58 in the form of a stamped part 59 sheet metal in its state after stamping and before its folding. In this initial state, the two branches 90, 91 have the same peripheral direction 2, which allows a sheet economy. The two plies 100, planned, are offset axially in the unfolded state and the two branches 90, 91 are then folded in opposite peripheral directions 2. The curved branches 90, 91 are slightly radially offset 102 to receive the radial extension 104 against the passages 80. The attachment segments 60 are bent in an open loop 64 according to FIG. 5 and after application to the connecting cables 30, 31, they are compressed radially to form a closed loop 64. For this, there are again applied electrodes against the radially opposite surfaces of the loop 64. The electrodes are compressed in the radial direction 4 while being supplied with electric current, for example for welding the loop 64 to the connecting cable 31, 30. The securing segments 60 and their electrical contact with the coil 16 are in the same manner as in the embodiment of FIGS. 5 and 6. The loop 64 according to FIG. pair of coil portions 17, surrounds a single connecting cable or at the same time two connecting cables 31, side by side, formed by the beginning of cable 28 and the end of cable 29 for a single winding cord 24, 25. To mount the conductive elements 58 in the fastening elements 63 of the plastic body 62, firstly the three conductive elements 58 are installed with their branches 90, 91 according to a ring shape so that the securing segments 60 of the inner branches 90 radially overlap the outer branches 91. For this, all three conductive elements 58 are assembled in common, simultaneously in the axial direction 3 between the surfaces of the guide 74, 75, 106, by axial assembly. This is preferably done with a tool that simultaneously positions and secures all three conductive members 58. By axially inserting the rivet pins 79 of the plastic body 62 into the axial passages 80 of the conductive members 58. the ends of the rivet pins 79 are converted into rivet shapes 81, to connect the conductive elements 58 by a shape connection with the plastic body 62. This plastic transformation of the material is effected for example by applying heat and a hot punch and / or with ultrasound.30 NOMENCLATURE OF MAIN ELEMENTS 2 Peripheral direction 3 Axial direction 4 Radial direction Stator 11, 13 Motor half 14 Stator tooth 10 16 Electric coil 17 Coil part 18 Coil part 22 Winding cable 24 First winding cord 25 Second winding cord 26 Phase 28 Start of cable 29 End of cable 30 Cable of cable iaison 31 Short connecting cable 34 Stator housing 36 Sheet metal lamella 38 Flow return cylinder 39 Axial end face 40 Insulating lamella 41 Ring periphery 42 Insulator tooth 44 Guide element 45 Groove 46 Axial extension 47 Through-passage / radial passage 50 Labyrinth device 52 Wiring plate / connection plate 54 Sleeve pins 55 Clamping link and cutter 56 Connector 58 Inner radially conductive element 59 Pressed part 60 Clamping segment 61 Closing ring 62 Plastic housing 63 Clamping element 64 Loop 65 Free end 67 Axial path 68 Free axial end 69 Notch 70 Cross member 72 Thrust bearing 74 First guide surface 75 Second guide surface 76, 77 Path 78 Middle segment 79 Rivet pin 80 Axial bore 81 Rivet head 82 Middle branch 83 Surface opposite 84 Spacer 85 Width 87 Free hip 88 Frontal surface 90 First branch 91 Second bran che 92, 93 Axial extension 95 Supporting surface 96 U or L section 98 Opening 100 Fold 102 Radial offset
    权利要求:
    Claims (3)
    [0001]
    CLAIMS 1 °) Wiring plate (52) in the stator (10) of an electric machine (12) for connecting the electrical winding (16) of the stator (10) to connection connectors (56) specific to a customer for the power supply, This plastic body-shaped wiring plate (52) having a closed ring (61) on which are formed in a single piece precisely three fastening elements (63) extending in the direction axial (3) and in which axial axially oriented connecting pins (54) are axially located each time, the axial connecting pins (54) being each made in one piece with the conductive elements (58) which can be electrically connected directly with the connecting cables (30, 31) of the electrical winding (16).
    [0002]
    2) Wiring plate (52) according to claim 1, characterized in that the conductive elements (58) are in the form of stampings (59) sheet metal, the axially curved extensions are in the form of connection of knife clamping (55) which constitutes the connecting pin (54), the sheet of the connecting pin (54) extending flat in the radial direction (4) and the conductive elements (58) extending flat in a plane in the circumferential direction (2), and in particular the fastening elements (63) have a first and a second guide surface (74, 75) extending in the axial direction (3) and in the radial direction ( 4) to support the connection pins (54) in the peripheral direction (2).
    [0003]
    3 °) wiring plate (52) according to claim 1, characterized in that the fastening elements (63) have axial stops (72) in the peripheral direction (2) and in the radial direction (4) to support in the axial direction (3), the crosspieces (70) of the connection pins (54), in particular when the associated connection connector (56) is depressed.4 °) The wiring plate (52) according to claim 1, characterized in that the fastening elements (63) have apertures (98) in the circumferential direction (2), these apertures extending over the entire axial extension and the curved conductive segments emerge from the apertures (98) from the elements. fixing (63). 5 °) wiring plate (52) according to claim 1, characterized in that each time two connecting pins (54) are provided adjacent to each other on a common fastening element (63), the element fastener (63) having a median branch (82) in the radial direction (4), this branch forming in a circumferential direction (2), the first guide surface (74) for a connecting pin (54) and the second guide surface (75) with respect to the opposite peripheral direction (2) for the other connection pin (54), and in particular the six branch connectors (54) are connected to an electrical phase (26). ) of the electric winding (16). 6 °) wiring plate (52) according to claim 1, characterized in that starting from the axial connecting pin (54), the conductive element (58) forms a first and a second branch (90, 91) in opposed peripheral directions (2) and the folds (100), branches (90, 91) are radially juxtaposed. 7 °) wiring plate (52) according to claim 1, characterized in that the two folds (100), curved, are axially on different planes and the first and second branches (90, 91) of the conductive element (58) apply on different annular paths (76, 77) in the axis of the plastic body (62). 8 °) wiring plate (52) according to claim 1, characterized in thata second branch (90) of the first conductive element (58) is radially inwardly and axially above the second leg (91) d a further conductive element (58) and an attachment segment (60) extends radially outwardly of the first limb (90), which securing segment passes without contact with the second limb (91) of the another segment (58) for coming into contact with connecting cables (30, 31) installed radially outside the first and second branches (90, 91). 9) Wiring plate (52) according to claim 1, characterized in that the fixing element (63) has a first guide surface (74) in a peripheral direction (2) for a first connection pin (54). ), and a second guide surface (75) spaced apart in the circumferential direction (2) and in the peripheral direction (2) opposite the first and second guide surfaces (74, 75) does not overlap in the radial direction ( 4). 10 °) Wiring plate (52) according to claim 1, characterized in that a single fastening element (63) is made wider in the circumferential direction (2) and / or the radial direction (4), than the two further fastening elements (63) for the rotor bearing cover of the electric machine (12) to have corresponding axial bushings for the fastening elements (63) in an unambiguous angular position in which the plate can slide. cable (52) -and in particular the wider fastening element (63) has two radially opposed U-shaped axial projections (92, 93) in the circumferential direction (2) and opposed to each other and of which branches (87) freely directed toward each other in the circumferential direction (2) each have a front surface (88) which forms a first and a second guide surface (74, 75, 106) for a single connecting pin (54) .3511 °) Wiring plate (52) s according to claim 1, characterized in that a spacer (84) is formed in one piece with the plastic body (62), radially at the outer edge, and axially opposite the fastener ( 63), this spacer (84) supporting the wiring plate (52) axially with respect to the stator (10), in particular directly against the sheet metal lamellae (36, 39) located radially on the outside. 12 °) Wiring plate (52) according to claim 1, characterized in that the conductive elements (58) - in particular with closed periphery - have passages (80) in the sheet which are crossed by axial rivet pins (79). ) of the plastic body (62) for fixing, the free ends of the rivet rods being in particular transformed by hot printing to form rivet heads (81). 13 °) Stator (10) comprising a wiring plate (52) according to any one of claims 1 to 12, characterized in that each time a phase (26) of a first winding bead (24) is connected in together with the corresponding phase (26) of a second winding bead (25) of the electrical winding (16), to be precisely connected to a branch pin (54) so as to form roughly three branch pins (54) on the circuit board (52), the two legs (90, 91) of a single conductive element (58) come into electrical contact with the fixing segment (60) of two pairs of radially opposite coil portions (17). to the connecting conductor (30, 31). 14 °) Electrical machine (12) comprising a rotor and a stator (10), having a wiring plate (52) according to any one of claims 1 to 12, characterized in thattwo directly adjacent coil portions (18) are connected to one another by a connecting cable (31), the connecting cable (31) being formed as a coiled winding cable (22) without cut-off, - sheet-metal lamella (36) upper of the stator (10). ) receiving an insulating lamella (40), at its outer periphery (41), closed, and having guide elements (44) for the connecting cables (30, 31) between the different coil parts (18), which are in different axial planes, - all the connecting cables (31) are located between the pairs of coil portions (17) directly adjacent to a phase (26, U, V, W) in the upper axial plane and are electrically connected to the securing segments (60) of the conductive elements (58). 15 °) A method of manufacturing a wiring plate (52) according to any one of claims 1 to 12, characterized in that by injection is first manufactured the plastic body (62) ring-shaped and the three fixing elements (63) in one piece on this body and then engaging the three connecting pins (54), identical with the conductive elements (58), folded - especially all three simultaneously - axially along first and second guiding surfaces (74, 75, 106) to engage them in the fastening elements (63) so that the securing segments (60) of the first limb (90) cut radially conde branch (91) conductive elements (58) .30
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    同族专利:
    公开号 | 公开日
    US10686344B2|2020-06-16|
    DE102015200093A1|2016-07-07|
    CN107112846B|2020-02-18|
    EP3243259A1|2017-11-15|
    US20180262075A1|2018-09-13|
    WO2016110425A1|2016-07-14|
    FR3031422B1|2019-08-09|
    CN107112846A|2017-08-29|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DE19842170A1|1998-09-15|2000-03-16|Wilo Gmbh|Contacting motor windings|
    WO2011082879A2|2010-01-07|2011-07-14|Robert Bosch Gmbh|Bearing shield|
    US20120126646A1|2010-11-19|2012-05-24|Nidec Corporation|Intermediate connection member, stator and motor|
    DE102012202131A1|2012-02-13|2013-08-14|Brose Fahrzeugteile GmbH & Co. Kommanditgesellschaft, Würzburg|Stator arrangement and electric machine|
    DE102013003024A1|2013-02-22|2014-08-28|Brose Fahrzeugteile GmbH & Co. Kommanditgesellschaft, Würzburg|Electric motor, in particular a vehicle component|
    JPH10336936A|1997-05-28|1998-12-18|Kokusan Denki Co Ltd|Stator of motor|
    DE10312869A1|2003-03-19|2004-10-07|Minebea Co., Ltd.|electric motor|
    DE50313509D1|2003-10-22|2011-04-14|Brose Fahrzeugteile|Interconnection unit for a stator of an electric motor|
    JP2007129847A|2005-11-04|2007-05-24|Denso Corp|Motor and fuel pump using the same|
    FR2923951B1|2007-11-19|2009-11-27|Sonceboz Automotive Sa|ELECTRICAL CONNECTION ASSEMBLY FOR MOTOR WITHOUT BRUSH.|
    CN201533207U|2009-11-03|2010-07-21|中山大洋电机股份有限公司|Connecting mechanism for connecting motor coil windings and circuit board|
    IT1397784B1|2010-01-15|2013-01-24|Gate Srl|MANIFOLD FOR THE STATOR OF A BRUSHLESS MOTOR CURRENT CONTINUES WITH PERMANENT MAGNETS|
    JP5725343B2|2011-05-11|2015-05-27|株式会社デンソー|Drive device|
    JP5641366B2|2012-01-25|2014-12-17|株式会社デンソー|Stator and stator manufacturing method|
    JP6053002B2|2013-03-08|2016-12-27|Ｋｙｂ株式会社|Bus bar unit|DE102015200095A1|2015-01-07|2016-07-07|Robert Bosch Gmbh|Stator for an electric machine and method of manufacturing such|
    DE102016204935A1|2016-03-24|2017-09-28|Robert Bosch Gmbh|Circuit board for a stator of an electrical machine and method for manufacturing an electrical machine|
    EP3300218B1|2016-09-22|2019-07-03|CPT Group GmbH|Contact ring, stator and electric motor|
    DE102017216074A1|2016-10-14|2018-04-19|Robert Bosch Gmbh|Electric motor with a clamping element|
    DE102017206329A1|2017-04-12|2018-10-18|Robert Bosch Gmbh|Stator of an electrical machine, an electric machine, and method for producing such|
    DE102017216084A1|2017-09-12|2019-03-14|Robert Bosch Gmbh|Stator for an electric machine, an electric machine and method for producing such a stator|
    FR3071112B1|2017-09-12|2021-10-22|Mmt ag|CONNECTION SYSTEM FOR ELECTRIC MACHINE.|
    DE202018102652U1|2018-05-11|2019-08-14|Brose Fahrzeugteile GmbH & Co. Kommanditgesellschaft, Würzburg|Stator for an electric motor and electric motor and switching unit|
    US20210273516A1|2018-07-19|2021-09-02|Sew-Eurodrive Gmbh & Co. Kg|Electric motor comprising a wiring unit, and method for producing an electric motor comprising a wiring unit|
    CN112425043A|2018-07-19|2021-02-26|索尤若驱动有限及两合公司|Electric machine having a connection unit and method for producing an electric machine having a connection unit|
    EP3824528A1|2018-07-19|2021-05-26|Sew-Eurodrive GmbH & Co. KG|Electric motor comprising a wiring unit and method for producing an electric motor with comprising a wiring unit|
    DE102018217857B4|2018-10-18|2022-02-03|Bühler Motor GmbH|DC motor and method for its manufacture|
    DE102019206641A1|2019-05-08|2020-11-12|Brose Fahrzeugteile SE & Co. Kommanditgesellschaft, Würzburg|Stator of an electric motor|
    DE102019210146B4|2019-07-10|2021-04-29|Bühler Motor GmbH|Method for manufacturing a stator of an electric motor|
    DE102019134935A1|2019-12-18|2021-06-24|Nidec Corporation|Electric motor with compact busbar unit|
    DE102020203870A1|2020-01-24|2021-07-29|Brose Fahrzeugteile SE & Co. Kommanditgesellschaft, Würzburg|Stator with a contact device|
    法律状态:
    2017-01-24| PLFP| Fee payment|Year of fee payment: 2 |
    2018-01-24| PLFP| Fee payment|Year of fee payment: 3 |
    2018-05-11| PLSC| Publication of the preliminary search report|Effective date: 20180511 |
    2019-01-22| PLFP| Fee payment|Year of fee payment: 4 |
    2020-01-23| PLFP| Fee payment|Year of fee payment: 5 |
    2021-01-20| PLFP| Fee payment|Year of fee payment: 6 |
    2022-01-18| PLFP| Fee payment|Year of fee payment: 7 |
    优先权:
    申请号 | 申请日 | 专利标题
    DE1020152000931|2015-01-07|
    DE102015200093.1A|DE102015200093A1|2015-01-07|2015-01-07|Circuit board of a stator for an electric machine and method for producing such|
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