JP4986974B2 - Stator - Google Patents

Description

  The present invention relates to a stator for a motor or generator.

  Usually, in an inner rotor type three-phase six-pole brushless motor, a cylindrical portion formed by laminating thin electromagnetic steel plates, and six pieces provided at predetermined intervals in the circumferential direction inside the cylindrical portion A stator core composed of a plurality of tooth portions is prepared, and two poles are formed for each phase by winding a conductive wire around each tooth portion. Specifically, as shown in FIG. 8, windings for the first phase are performed on the first and fourth tooth portions among the first to sixth tooth portions sequentially arranged in the circumferential direction. Second phase winding is performed on the second and fifth tooth portions, and third phase winding is performed on the third and sixth tooth portions. In this case, all the first to fourth teeth, second to fifth teeth, and third to sixth teeth are connected to all the wires (crossovers). It is extended in the same circumferential direction (for example, clockwise). Specifically, the connecting wire is passed from one tooth part to the other tooth part through the outside of the flange part provided at intervals along one end edge of the cylindrical part of the stator core.

  In motors with a low rated voltage, dielectric breakdown does not occur even if the crossover wires are in contact with each other, so that the crossover wires with insulation such as enamel coating are in the state of contact.

  On the other hand, a motor with a high rated voltage is subjected to an insulation process such as inserting an insulator into a portion where the crossover wire contacts. However, such an insulation process is difficult to perform automatically with a winding machine, and requires manual work. Therefore, there is a problem that productivity is low and cost is high.

  In order to solve these problems, a step portion that engages with each crossover wire is provided on the outer peripheral surface of the collar portion, and a step is provided on the step portion (Patent Document 1) or wound around the tooth portion. When the winding wire goes out of the cylindrical portion and is engaged with the outer peripheral surface of the flange portion, the connecting wires are prevented from coming into contact with each other by shifting the lead wires in the vertical direction (Japanese Patent Laid-Open No. Hei 9- No. 163654) has been proposed.

However, in these proposals, since it is necessary to avoid contact of the three crossover wires, there is a problem that the size of the stator as a whole becomes large, and it is difficult to reduce the size of a motor equipped with the stator.
JP 7-46782 A

  Accordingly, an object of the present invention is to provide a stator in which the overall size can be reduced by reducing the overlap itself of the connecting wires and thereby reducing the size of the insulating support member that supports the connecting wires. There is to do.

That is, the present invention is a three-phase stator having 6 poles or more,
A stator core composed of a cylindrical portion, and six or more tooth portions provided on the inner peripheral surface of the cylindrical portion at predetermined intervals in the circumferential direction;
The cylindrical portion is introduced from one side of the first tooth portion on one end surface side of the cylindrical portion and wound around the first tooth portion, and the cylindrical shape is formed on the one end surface from the other side of the first tooth portion. is extended in the one circumferential direction of the parts, the fourth tooth portion in circumferential direction one direction side counted from the first tooth portion, the side corresponding to said one side of the tooth portion of the first A first conducting wire wound from the side corresponding to the other side of the first tooth portion on the one end surface side;
Introduced from the side corresponding to the other side of the first tooth part to the second tooth part adjacent to the first tooth part on one side in the circumferential direction on one end surface side of the cylindrical part The first conductive wire is wound in the opposite direction, and is extended on the one end surface from the side corresponding to the one side of the first tooth portion to the other circumferential side of the cylindrical portion, Counting from the second tooth portion, wound around the fourth tooth portion on the other side in the circumferential direction, from the side corresponding to the other side of the first tooth portion, in the opposite direction to the first lead wire, A second conducting wire led out from a side corresponding to the one side of the first tooth portion on the one end surface side;
Introduced from the side corresponding to the one side of the first tooth part to the third tooth part adjacent to the second tooth part on one side in the circumferential direction on one end surface side of the cylindrical part, Wrapped in the same direction as the first conductor, and extended from the side corresponding to the other side of the first tooth portion to the one end in the circumferential direction of the cylindrical portion, Wrapped in the same direction as the first lead wire from the side corresponding to the one side of the first tooth portion on the fourth tooth portion on the one direction side in the circumferential direction counted from the three tooth portions, A third conductor led out from a side corresponding to the other side of the first tooth portion on one end surface side;
Provided on the one end surface of the cylindrical portion for engaging and supporting the conductive wire extending in the circumferential direction on the one end surface of the cylindrical portion from the first, second and third tooth portions And a stator having a plurality of guide members.

The present invention also provides
In a stator with more than 6 poles in 3 phases,
A stator core composed of a cylindrical portion, and six or more tooth portions provided at predetermined intervals in the circumferential direction on the inner side of the cylindrical portion;
The one end surface side of the tubular portion is introduced from one side of the first tooth portion and is wound around the first tooth portion, and the other end surface of the tubular portion is formed from the one side of the first tooth portion. the upper is extended to one side the circumferential direction, the fourth tooth portion counted from the first tooth portion, is wound from a side corresponding to the other side of the teeth of the first, the end face A first conducting wire led out from a side corresponding to the other side of the first tooth portion on the side;
The second tooth portion of adjacently provided to the teeth of the first in the one circumferential direction, is introduced from the side corresponding to said other side of the first tooth portion at one end face of the cylindrical portion The first conductive wire is wound in the opposite direction, and is extended from the side corresponding to the other side of the first tooth portion to the other side in the circumferential direction on the other end surface. The first tooth portion is wound around the fourth tooth portion counted from the second tooth portion from the side corresponding to the one side of the first tooth portion in the direction opposite to the first conductive wire, and the first end portion is wound around the first tooth portion. A second conducting wire led out from the side corresponding to the one side of the tooth portion;
The third tooth section of adjacently provided to the teeth of said second with said one circumferential direction, the introduced from the side corresponding to the one side of the first tooth portion at one end face of the cylindrical portion wound in the same direction as the first conductor, from the side corresponding to the one side of the tooth portion of the first, is extended over the other end face in the one circumferential direction of the cylindrical portion, said The first tooth portion is wound around the fourth tooth portion from the side corresponding to the other side of the first tooth portion in the same direction as the first conductive wire, and the first tooth portion on the one end face side. A third conductor led out from the side corresponding to the other side of the tooth portion;
Provided on the other end surface of the cylindrical portion to engage and support the conducting wire extending in the circumferential direction on the other end surface of the cylindrical portion from the first, second and third tooth portions A plurality of guide members ,
The guide member is a rod-shaped member extending from the one end surface of the cylindrical portion in the axial direction of the cylindrical portion, and is contoured so as to support the engaged conductors separated from each other in the axial direction. and it is, to provide a stator.

  As shown in FIG. 8, the conventional stator has three crossover portions (VII portion in the figure) that overlap in the first to third conductive wires U, V, and W wound around each of the three phases. In the present invention, the overlapping direction of the connecting wire between the second conducting wire and the first and third conducting wires is reversed, so that the overlapping of the connecting wires can be at most two. As a result, the guide member that supports the crossover can be made small and have a simple shape, and thus the size of the entire stator can be reduced.

The guide member in the first stator according to the present invention is also a rod-shaped member extending in the axial direction of the cylindrical portion from the one end surface of the cylindrical portion, and the engaged wires are mutually connected in the axial direction. It can be contoured to support it.

  The rod-shaped member has a first portion close to the one end surface of the cylindrical portion and a portion separated from the one end surface in the axial direction, and the first and second portions are formed with a step. You can make it.

  The first portion can have a large diameter and the second portion can have a small diameter.

  The guide member can have such a simple shape so that the supporting lead wire does not come into contact therewith.

  Hereinafter, preferred embodiments of the present invention will be described in more detail with reference to the drawings.

  1 to 5b show a stator 1 according to a first embodiment of the present invention. The stator 1 is a three-phase six-pole stator, and has six cylindrical teeth 11b and six teeth extending in the axial direction and projecting radially inward from each other in the circumferential direction on the inner peripheral surface of the cylindrical portion. The stator core 11 which consists of the parts 12a-12f, and the 1st thru | or 3rd conducting wire U, V, W wound around the tooth parts 12a-12f as shown to FIG. 5a and 5b.

  One feature of the present invention lies in the manner of winding the conductors U, V, and W shown in FIGS. 5a to 5d. First, this winding method will be described. 5a to 5d show the tooth portions 12a to 12f on the inner peripheral surface of the cylindrical portion when the cylindrical portion 11b is cut open parallel to the axis thereof, and the conductive wires U, V, and W wound around the tooth portions. Show.

Although the winding method of FIG. 5a and FIG. 5b differs specifically, since it can be put together as the same concept, these are demonstrated together first. The first conducting wire U is defined as one side of the first tooth portion 12a on the one end surface 11a (upper end surface in FIG. 1) side of the cylindrical portion 11b (in this specification, “one side of the first tooth portion”). Means the left or right when the first tooth portion is viewed from the outside of the stator, and "the other side of the tooth portion" means the opposite side, the left side in the example of Fig. 5a, the example of Fig. 5b. The right side is one side.) And is wound around the first tooth portion 12a, and the one end surface (from the other side of the first tooth portion 12a (the right side in FIG. 5a, the left side in FIG. 5b)) The upper end surface 11a is extended to one side D1 in the circumferential direction of the cylindrical portion 11b (a portion extending in the circumferential direction constitutes a “crossover”) and counted from the first tooth portion 12a. in circumferential direction one direction side D1 in the fourth tooth portion 12d, in the side (Figure 5a corresponding to the one side of the first tooth portion left, FIG. Wound from the right side) b, which is derived from the one end surface (the side corresponding to the other side of the first tooth portion at an upper end surface) (in Figure 5a the right, left side in FIG. 5b). The second conductive wire V is connected to the second tooth portion 12b adjacent to the first tooth portion 12a on the one side D1 in the circumferential direction on the one end surface 11a side of the cylindrical portion 11b. It is introduced from the side corresponding to the other side (the right side in FIG. 5a, the left side in FIG. 5b) and wound in the direction opposite to the first conductor U, and the side corresponding to the one side of the first tooth portion ( From the left side in FIG. 5a and the right side in FIG. 5b, the one end surface (upper end surface) 11a is extended to the other side D2 in the circumferential direction of the cylindrical portion 11b and counted from the second tooth portion 12b . In the other direction side D2, the fourth tooth portion 12e is directed in the direction opposite to the first conductor U from the side corresponding to the other side of the first tooth portion (the right side in FIG. 5a and the left side in FIG. 5b). The side corresponding to the one side of the first tooth portion on the one end surface (upper end surface) (the left side in FIG. 5a, It is derived from the right side) in 5b. The third conductor W is connected to the third tooth portion 12c adjacent to the second tooth portion 12b on the one side D1 in the circumferential direction on the one end face 11a side of the cylindrical portion 11b. It is introduced from the side corresponding to the one side (the left side in FIG. 5a, the right side in FIG. 5b) and wound in the same direction as the first conducting wire U, and on the other side of the first tooth portion of the third tooth portion 12c. From the corresponding side (right side in FIG. 5a, left side in FIG. 5b), the one end surface 11a is extended to one side D1 in the circumferential direction of the cylindrical portion 11b and counted from the third tooth portion 12c . Wrapped in the same direction as the first conductor U from the side corresponding to the one side of the first tooth portion (left side in FIG. 5a, right side in FIG. 5b) on the fourth tooth portion 12f on the one direction side D1 . The side corresponding to the other side of the first tooth portion on the one end surface (upper end surface) (the right side in FIG. 5a, FIG. 5). b) is derived from the left side).

Next, the winding method shown in FIGS. 5c and 5d will be described. Also in this case, although the specific winding method is different, it can be summarized as the same concept, and will be described together. First, the first conducting wire U is from one side (the left side in FIG. 5c, the right side in FIG. 5d) of the circumferential direction of the first tooth portion 12a on one end surface (lower end surface) side of the cylindrical portion 11b (not shown). Introduced and wound around the first tooth portion 12a, from the one side (left side in FIG. 5c, right side in FIG. 5d) of the first tooth portion, on the other end surface (upper end surface) of the cylindrical portion, The other side in the circumferential direction (right side in FIG. 5c, left side in FIG. 5d) is extended to D1, and counted from the first tooth part to the fourth tooth part 12d on the circumferential one direction side D1 . 1 is wound from the side corresponding to the other side of the tooth part (right side in FIG. 5c, left side in FIG. 5d), and the other side of the first tooth part (the right side in FIG. 5c) on the one end face side (lower end face) , From the side corresponding to the left side in FIG. 5d (right side in FIG. 5c, left side in FIG. 5d). The second conductive wire V is connected to the second tooth portion 12b on the one end face (lower end face) side of the cylindrical portion corresponding to the other side of the first tooth portion 12a (the right side in FIG. 5c and the right side in FIG. 5d). From the side corresponding to the other side of the first tooth portion (the right side in FIG. 5c and the left side in FIG. 5d) from the other end surface (upper end surface). ) is extended over to the other side D2 in the circumferential direction, the second fourth-circumferential direction the other direction D2 counted from the tooth portion 12b of the tooth portion 12e, the one side of the first tooth portion Is wound around in the opposite direction to the first conductor from the side corresponding to (the left side in FIG. 5c, the right side in FIG. 5d), and the one side of the first tooth portion (the lower end surface) side (FIG. 5c). In FIG. 5d, and the right side in FIG. 5d). The third conducting wire W is connected to the third tooth portion 12c on the one end face (lower end face) side of the tubular portion corresponding to the one side of the first tooth portion (left side in FIG. 5c, in FIG. 5d). Right side) and wound in the same direction as the first tooth part, and extended from the side corresponding to the one side of the first tooth part to the other end face (upper end face) side of the cylindrical part, It is extended to the one side in the direction and wound from the side corresponding to the other side of the first tooth portion on the fourth tooth portion 12f on the circumferential one direction side D1 counting from the third tooth portion. Thus, the one end surface (lower end surface) side is led out from the side corresponding to the other side of the first tooth portion.

  In the above-described winding method of the conducting wire, the extending direction D1 in the circumferential direction of the connecting wire of the first and third conducting wires U and W and the extending direction D2 of the connecting wire of the second conducting wire V are opposite directions. As a result, the bulkiness of the crossover lines is at most two.

  Next, a specific configuration of the stator 1 will be described.

  As described above, the starter 1 has the cylindrical stator core 11, which is formed by laminating thin electromagnetic steel plates, and insulating flanges 11c and 11d are attached to both ends thereof.

  As shown in FIGS. 3 and 9, the insulating flanges 11c and 11d have an annular portion 11g superimposed on both end faces of the cylindrical portion 11b of the stator core 11, and a cross section extending in the axial direction from the annular portion. And an insulating liner 11h. The insulating liner 11h has approximately half the length of the core main body, and the thin tip portions 11h-1, 11h- are overlapped with each other when the tip portions are inserted from both end openings of the stator core 11. 2. As shown in FIG. 9, the insulating liner 11h is inserted into the gap between the tooth portions 12a to 12f to cover the side surfaces of the tooth portion.

  An outer edge wall portion 11e (see FIGS. 1 and 3) extending outward in the axial direction is provided on the outer peripheral edge of the annular portion 11g, and from the inner peripheral edge of the annular portion 11g, A locking portion 14 is provided that extends radially inward so as to overlap the axial end surfaces of the tooth portions 12a to 12f and extends outward from the tip edge in the axial direction, thereby winding around the tooth portions 12a to 12f. The lead wire is prevented from falling off.

  The upper end surface of the stator core 11 is provided with a plurality of guide members 30 for engaging and supporting the connecting wires U, V, and W. As shown in FIGS. 1 to 3, the guide member 30 is provided in the annular portion 11 g of the insulating flange 11 c so as to be separated by a predetermined distance in the circumferential direction. Specifically, it is provided at a position corresponding to each tooth part 12a to 12f, that is, a circumferential center position of each tooth part 12a to 12f and a circumferential center position between adjacent tooth parts, and spaced by 30 degrees. In total, 12 are provided. As shown in FIG. 4, in this embodiment, the guide member 30 is a rod-like member extending in the axial direction of the cylindrical portion 11, and is contoured so as to support two engaged wires separated in the axial direction. It has been. That is, the guide member 30 has a large diameter portion 31 and a small diameter portion 32, and a step is formed between the small diameter portion and the large diameter portion. In the present embodiment, a recess 33 is formed in the step portion so that a conducting wire can be passed therethrough.

  One of the two connecting wires U, V, and W shown in FIGS. 5 a to 5 d (the conducting wire U in FIG. 4) is passed through the recess 33 formed in the step portion of the guide member 30. The other conductor is first engaged with the proximal end portion of the large-diameter portion 31 of the guide member. Thereby, a conducting wire does not contact directly but each conducting wire can be insulated appropriately.

  FIG. 6 shows an end face of a stator including conductive wires U, V, and W that are different from those in FIG. In this stator, the first conductive wire U wound around the tooth portion 12 a and extending from the tooth portion is engaged with the large-diameter portion 31 of the guide member 30 at all the connecting wire portions up to the tooth portion 12 d.

  In the second conductive wire V wound around the tooth portion 12b and extending from the tooth portion, all the connecting wire portions to the tooth portion 12e are engaged with the small diameter portion 32 of the guide member 30.

  The third conductive wire W wound around the tooth portion 12f and extending from the tooth portion is engaged with the large-diameter portion 31 in the third guide member 30 from the tooth portion 12f to the fourth and fifth portions. The eye guide member is engaged with the small diameter portion 32.

  Since the stator of the present embodiment has the above-described structure for winding a jumper, it can be manufactured without having to pass the jumper under the jumper. For this reason, it can be manufactured by using an automatic winding machine (for example, see JP-A-6-245442) conventionally used for manufacturing this type of stator, and requires a special manufacturing apparatus. It is also useful in that it does not.

  The present invention can also be applied to a stator having nine poles in three phases or more. FIG. 7 shows a case where the present invention is applied to a three-phase nine-pole stator. As can be seen from this figure, by applying the present invention, it is possible to reduce the number of places where the crossover lines are tripled.

  In addition, the stator of this invention is not restrict | limited to the above-mentioned embodiment at all, and can be variously changed in the range which does not deviate from the meaning of this invention.

  For example, in the embodiment shown in FIG. 6, the guide wires 30 are not engaged with the small-diameter portion 32 at all, and the guide members other than the guide portion 30 closest to the tooth portion 12 b and the tooth portion 12 e around which the lead wire is wound are large. You may engage with the diameter part 31.

1 is a perspective view showing a first preferred embodiment of a stator of the present invention. FIG. 2 is an exploded side view of the stator core shown in FIG. 1. It is a top view of the stator shown in FIG. FIG. 4 is an enlarged view of a part IV in FIG. 3 and an enlarged perspective view showing a guide member. It is a figure which shows typically the winding structure of conducting wire. It is a figure which shows typically the winding structure of the other conducting wire which concerns on 1st Embodiment. It is a figure which shows typically the winding structure of the conducting wire which concerns on 2nd Embodiment. It is a figure which shows typically the winding structure of the other conducting wire which concerns on 2nd Embodiment. It is a top view which shows the other embodiment of the stator of this invention. It is a figure which shows the other embodiment of the stator of this invention. It is a figure which shows typically the winding structure of the conducting wire in the conventional stator. It is the figure which looked at the insulation flange from the axial direction inner side.

Stator 1; stator core 11; one end surface 11a; cylindrical part 11b; insulating flanges 11c and 11d; outer edge wall part 11e; annular part 11g; insulating liner 11h; thin parts 11h-1, 11h-2; ; Locking part 14; guide member 30; large diameter part 31; small diameter part 32; recess 33; conducting wire U, V, W; one side D1 in the circumferential direction;

Claims (5)

In a stator with more than 6 poles in 3 phases,
A stator core composed of a cylindrical portion, and six or more tooth portions provided on the inner peripheral surface of the cylindrical portion at predetermined intervals in the circumferential direction;
The cylindrical portion is introduced from one side of the first tooth portion on one end surface side of the cylindrical portion and wound around the first tooth portion, and the cylindrical shape is formed on the one end surface from the other side of the first tooth portion. is extended in the one circumferential direction of the parts, the fourth tooth portion in circumferential direction one direction side counted from the first tooth portion, the side corresponding to said one side of the tooth portion of the first A first conducting wire wound from the side corresponding to the other side of the first tooth portion on the one end surface side;
Introduced from the side corresponding to the other side of the first tooth part to the second tooth part adjacent to the first tooth part on one side in the circumferential direction on one end surface side of the cylindrical part The first conductive wire is wound in the opposite direction, and is extended from the side corresponding to the one side of the first tooth portion to the other circumferential side of the cylindrical portion on the one end surface, Counted from the second tooth portion, wound around the fourth tooth portion on the other side in the circumferential direction, from the side corresponding to the other side of the first tooth portion in the opposite direction to the first lead wire, A second conducting wire led out from a side corresponding to the one side of the first tooth portion on the one end surface side;
Introduced from the side corresponding to the one side of the first tooth part to the third tooth part adjacent to the second tooth part on one side in the circumferential direction on one end surface side of the cylindrical part, Wound in the same direction as the first conductor, and extended from the side corresponding to the other side of the first tooth portion to the one circumferential side of the tubular portion on the one end surface, The first tooth is wound in the same direction as the first lead wire from the side corresponding to the one side of the first tooth portion on the fourth tooth portion on the one direction side in the circumferential direction . A third conductor led out from a side corresponding to the other side of the first tooth portion on the end face side;
Provided on the one end surface of the cylindrical portion for engaging and supporting the conductive wire extending in the circumferential direction on the one end surface of the cylindrical portion from the first, second and third tooth portions And a plurality of guide members. In a stator with more than 6 poles in 3 phases,
A stator core composed of a cylindrical portion, and six or more tooth portions provided at predetermined intervals in the circumferential direction on the inner side of the cylindrical portion;
The one end surface side of the tubular portion is introduced from one side of the first tooth portion and is wound around the first tooth portion, and the other end surface of the tubular portion is formed from the one side of the first tooth portion. is extended over the circumferential direction one side, the fourth tooth portion in circumferential direction one side counted from the first tooth portion, winding from the side corresponding to the other side of the tooth portion of the first A first conducting wire led out from a side corresponding to the other side of the first tooth portion on the one end surface side;
The second tooth portion of adjacently provided to the teeth of the first in the one circumferential direction, is introduced from the side corresponding to said other side of the first tooth portion at one end face of the cylindrical portion The first conductive wire is wound in the opposite direction, and is extended from the side corresponding to the other side of the first tooth portion to the other side in the circumferential direction on the other end surface. The first conductive wire is wound around the fourth tooth portion on the other circumferential side from the second tooth portion, in a direction opposite to the first conductive wire from the side corresponding to the one side of the first tooth portion. A second conducting wire led out from a side corresponding to the one side of the first tooth portion on the end surface side;
The third tooth section of adjacently provided to the teeth of said second with said one circumferential direction, the introduced from the side corresponding to the one side of the first tooth portion at one end face of the cylindrical portion wound in the same direction as the first conductor, from the side corresponding to the one side of the tooth portion of the first, is extended over the other end face in the one circumferential direction of the cylindrical portion, said The one end face is wound around in the same direction as the first conductor from the side corresponding to the other side of the first tooth part on the fourth tooth part on the one side in the circumferential direction, counting from the three tooth parts A third conductor led from the side corresponding to the other side of the first tooth on the side;
Provided on the other end surface of the cylindrical portion to engage and support the conducting wire extending in the circumferential direction on the other end surface of the cylindrical portion from the first, second and third tooth portions and a plurality of guide members which are,
The guide member is a rod-shaped member extending from the one end surface of the cylindrical portion in the axial direction of the cylindrical portion, and is contoured so as to support the engaged conductors separated from each other in the axial direction. The stator. The guide member is a rod-shaped member extending from the one end surface of the cylindrical portion in the axial direction of the cylindrical portion, and is contoured so as to support the engaged conductors separated from each other in the axial direction. The stator according to claim 1 .   The rod-shaped member has a first portion close to the one end surface of the cylindrical portion and a second portion separated from the one end surface in the axial direction, and the first and second portions are stepped. The stator according to claim 2 or 3, wherein the stator is formed. The stator according to claim 4, wherein the first portion has a large diameter and the second portion has a small diameter.

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