WO2017126381A1

WO2017126381A1 - Motor

Info

Publication number: WO2017126381A1
Application number: PCT/JP2017/000595
Authority: WO
Inventors: 夏海田村
Original assignee: 株式会社ミツバ
Priority date: 2016-01-20
Filing date: 2017-01-11
Publication date: 2017-07-27
Also published as: JP6579967B2; JP2017131035A

Abstract

In the present invention segments (14) have risers (15) around which winding wires (7) are wound, and the winding wires (7) leading out from the armature core (6) form a winding part (80) wound in the same direction on the rotary shaft, and lead out toward a commutator (13) via this winding part (80). The winding wires (7) wound around the risers (15) intersect on the armature core (6) side of the risers (15) around which they are wound, and form riser-side intersection parts.

Description

motor

The present invention relates to a motor.
This application claims priority based on Japanese Patent Application No. 2016-008886 filed in Japan on January 20, 2016, the contents of which are incorporated herein by reference.

Generally, in a brushed three-phase DC electric motor mounted on a vehicle or the like, an armature is rotatably supported inside a cylindrical motor housing having a permanent magnet attached to an inner peripheral surface. The armature includes a rotating shaft, an armature core that is externally fitted and fixed to the rotating shaft, and a commutator that is externally fixed to the rotating shaft.

In the armature core, a plurality of teeth that are long in the axial direction are radially formed, and slots that are long in the axial direction are formed between the teeth. The armature core functions as a magnetic circuit, and a winding is wound around each tooth of the armature core through a slot. In the commutator, a plurality of segments are arranged along the circumferential direction, and a winding is connected to each segment. Each segment can be slidably contacted with the brush, and a current is supplied to the winding by applying a voltage from the brush to the segment.

By the way, as a means for reducing the size and weight of the electric motor, it is conceivable to increase the number of permanent magnets. By increasing the number of poles, the amount of effective magnetic flux per pole can be reduced, and as a result, the armature core forming the magnetic circuit can be reduced in size and weight.
Here, since the number of slots increases when trying to simply increase the number of poles, if the outer diameter of the armature core is kept constant, the slots become small, and the winding work becomes difficult.

For this reason, a winding is wound around a predetermined tooth to form an armature coil, and segments having the same potential are short-circuited with the winding to form a connection line, and the armature coil and the connection line are connected to a single tooth. When a segment is formed in a series of windings, the segment to which the winding drawn from the teeth is connected is the first segment, and the segment to which the winding drawn into the teeth is the second segment, these are the segments. The first segment and the second segment are arranged adjacent to each other, and the winding connected to the first segment and the winding connected to the second segment intersect between the commutator and the armature core. Thus, a technique for forming a plurality of intersecting portions is disclosed (for example, see Patent Document 1).

JP 2014-96859 A

In recent years, demand for further miniaturization has increased. In the above-described prior art, the winding direction is not always constant, and there is a limit to reducing the number of winding steps.

The present invention provides a motor capable of further reducing the size and reducing the number of winding man-hours.

According to the first aspect of the present invention, a motor includes a motor housing having a plurality of magnetic poles, a rotating shaft that is rotatably supported by the motor housing, and a fixed winding method for windings. An armature core having a plurality of teeth wound by: a commutator fixed to the rotating shaft adjacent to the armature core; and a plurality of segments arranged in a circumferential direction; and a sliding contact with the commutator A brush for supplying power to the winding, and the segment has a riser around which the winding is wound, and the winding drawn out from the armature core is hung in the same direction on the rotating shaft. A turned-up portion is formed and drawn toward the commutator through the turned-up portion, and the winding wound around the riser is hung. Forming a riser side intersection intersect at the armature core side of the riser that is.

In this way, the windings wound around the riser are crossed on the armature core side of the riser to form the riser side crossing portion, thereby preventing loosening of the winding under the neck of the commutator. For this reason, the winding thickness of the winding under the neck of the commutator is eliminated, and the motor can be reduced in size.
Further, by winding the winding drawn from the armature core around the rotating shaft, it is possible to prevent loosening of the winding wired between the armature core and the commutator, and to further reduce the size of the motor. Furthermore, since the winding is drawn out from the armature core in the same direction, the winding work can be efficiently performed and the number of winding steps can be reduced.

According to the second aspect of the present invention, the motor includes a motor housing having a plurality of magnetic poles, a rotating shaft that is rotatably supported by the motor housing, and a fixed winding method on the rotating shaft. An armature core having a plurality of teeth wound by: a commutator fixed to the rotating shaft adjacent to the armature core; and a plurality of segments arranged in a circumferential direction; and a sliding contact with the commutator And a brush for supplying power to the windings, and two lead lines of the windings drawn from both sides of the teeth intersect with each other to form a tooth side intersection.

By configuring in this way, it is possible to prevent loosening of the windings near the teeth and to reduce the size of the motor.

According to a third aspect of the present invention, in the motor according to the first or second aspect of the present invention, the number of teeth is set to 6 and the number of segments is set to 12, Each of the teeth has a winding start end of the winding connected to one of the segments adjacent to each other and the other segment or the other segment. A winding end end of the winding is connected to the short-circuited segment, the first coil formed by winding the winding in a forward direction so as to be continuous between the teeth corresponding to the same phase, and the other adjacent to each other The winding start end of the winding is connected to one segment of the segment, and the winding is connected to the other segment or a segment short-circuited to the other segment. And a second coil formed by winding the windings in opposite directions so that the teeth corresponding to the same phase are connected to each other. Assign the first coil wound in each phase in the order of phase and W phase, and make the U coil, V phase and W phase coil respectively, and the second coil wound in each phase − When U-phase, -V-phase, and -W-phase coils are used, the U-phase, -W-phase, V-phase, -U-phase, W-phase, and -V-phase coils are electrically connected in this order between the adjacent segments. Connect.

According to a fourth aspect of the present invention, in the motor according to the first aspect or the second aspect of the present invention, the number of teeth is set to 6, and the number of segments is set to 12, When teeth are sequentially numbered from 1 to 6 in the circumferential direction and numbers are sequentially numbered from 1 to 12 in the circumferential direction, the winding is connected to the 7th segment at the winding start end. , Connected from the 7th segment to the 1st segment, wound in the forward direction from the 1st segment to the 1st tooth, connected from the 1st tooth to the 2nd segment, connected from the 2nd segment to the 8th segment, 8 No. 3 segment is wound in the reverse direction to No. 3 tooth, No. 3 tooth is connected to No. 3 segment, No. 3 segment is connected to No. 9 segment, From No. 9 segment No. 1 teeth are wound in the forward direction, No. 5 teeth are connected to No. 10 segment, No. 10 segments are connected to No. 4 segment, No. 4 segments are wound in the reverse direction to No. 1 teeth, No. 1 teeth To the 11th segment, from the 11th segment to the 5th segment, wound from the 5th segment to the 3rd tooth in the forward direction, connected from the 3rd tooth to the 6th segment, and from the 6th segment to the 12th segment. It is connected to the No. segment, wound in the reverse direction from the No. 12 segment to the No. 5 tooth, and the winding end drawn from the No. 5 tooth may be connected to the No. 7 segment again.

With this configuration, it is possible to provide a motor that can be further reduced in size and can reduce the number of winding steps.

According to a fifth aspect of the present invention, in the motor according to any one of the first to fourth aspects of the present invention, the winding is wound point-symmetrically around the rotation axis. Has been.

With this configuration, the so-called double flyer method in which the number of flyers used when forming the coils is increased to two and two coils are formed at a time can be adopted. For this reason, the number of winding man-hours can be further reduced.

According to the motor described above, the windings wound around the riser are crossed on the armature core side of the riser to form the riser side crossing portion, thereby preventing loosening of the winding under the neck of the commutator. For this reason, the winding thickness of the winding under the neck of the commutator is eliminated, and the motor can be reduced in size.
Further, by winding the winding drawn from the armature core around the rotating shaft, it is possible to prevent loosening of the winding wired between the armature core and the commutator, and to further reduce the size of the motor. Furthermore, since the winding is drawn out from the armature core in the same direction, the winding work can be efficiently performed and the number of winding steps can be reduced.

It is a longitudinal cross-sectional view of the motor in embodiment of this invention. It is a cross-sectional view of the motor in the embodiment of the present invention. It is an expanded view of the armature in 1st Embodiment of this invention. It is explanatory drawing which shows the winding state of the coil | winding to the riser in 1st Embodiment of this invention. It is an expanded view of the armature in 2nd Embodiment of this invention.

Next, an embodiment of the present invention will be described based on the drawings.

(motor)
FIG. 1 is a longitudinal sectional view of the motor 1, and FIG. 2 is a transverse sectional view of the motor 1.
As shown in FIGS. 1 and 2, the motor 1 serves as a drive source for electrical components (for example, a radiator fan) mounted on the vehicle. In the motor 1, an armature 3 is rotatably disposed in a bottomed cylindrical motor housing 2. Four permanent magnets 4 are fixed to the inner peripheral surface of the motor housing 2 in the circumferential direction. That is, the motor 1 has four magnetic poles.

The armature 3 is externally fitted and fixed so as to be adjacent to the armature core 6 on one end side of the rotary shaft 5 and the armature core 6 wound around the rotary shaft 5 and wound around the armature core 6. Commutator 13.
The armature core 6 is obtained by laminating a plurality of ring-shaped metal plates 8 in the axial direction. Six T-shaped teeth 9 (see FIG. 2) are radially formed on the outer peripheral portion of the metal plate 8 at regular intervals along the circumferential direction. By stacking a plurality of metal plates 8, dovetail-shaped slots 11 are formed between the teeth 9 on the outer periphery of the armature core 6. The slots 11 extend along the axial direction, and six slots 11 are formed at equal intervals along the circumferential direction. And the coil | winding 7 is wound around each teeth 9 through the slot 11 (details about the winding method of the coil | winding 7 are mentioned later).

Twelve segments 14 made of a conductive material are attached to the outer peripheral surface of the commutator 13 disposed adjacent to the armature core 6. That is, the commutator 13 is provided with twice as many segments 14 as the number of slots 11.
The segments 14 are made of plate-like metal pieces that are long in the axial direction, and are fixed at equal intervals along the circumferential direction in a state of being insulated from each other. A riser 15 is integrally formed at an end portion of each segment 14 on the armature core 6 side and is bent in a manner of being folded back to the outer diameter side. A winding 7 drawn out from the armature core 6 is wound around the riser 15. Then, the winding 14 is fixed to the riser 15 by fusing or the like, so that the segment 14 and the winding 7 are electrically connected.

Further, as shown in FIG. 2, the winding 7 is also wound around the riser 15 corresponding to the segments 14 having the same potential (every five segments 14 in this embodiment) and fixed by fusing or the like. The winding 7 connecting the segments 14 having the same potential is a connection line 25 that short-circuits the segments 14 having the same potential. The connection line 25 is wired between the commutator 13 and the armature core 6.

As shown in FIG. 1, the other end side of the rotating shaft 5 is rotatably supported by a bearing 16 in a boss protruding from the motor housing 2. A cover 17 is provided at the opening end of the motor housing 2. A holder stay 18 is attached to the inside of the cover 17. The holder stay 18 is provided with a pair of brush holders 19 with an interval of 90 ° in the circumferential direction.

Each brush holder 19 is provided with a brush 21 that can be moved in and out in a state where the brush 21 is urged through a spring 29. Since the tip of each brush 21 is biased by a spring 29, it is in sliding contact with the segment 14 of the commutator 13. A pigtail 22 is connected to the base end side of each brush 21. The pigtail 22 is electrically connected to an external power source (not shown). As a result, the power of the external power source is supplied to the winding 7 via the pigtail 22, the brush 21, and the segment 14.

Thus, the so-called 4-pole 6-slot 12-segment brushed motor 1 having 4 permanent magnets 4 (magnetic poles) (4 magnetic poles), 6

slots

11 and 12 segments 14 is provided in the motor 1 with a brush. The winding 7 is wound around the armature core 6 and the riser 15 as follows.

(First embodiment)
(Wound winding method)
FIG. 3 is a developed view of the segment 14 (the riser 15) and the teeth 9 of the armature 3, and the gap between the adjacent teeth 9 corresponds to the slot 11. In the following drawings, each tooth 9 and each segment 14 will be described with numbers in order. That is, the teeth 9 are numbered from 1 to 6, and the segments 14 are numbered from 1 to 12.

Here, the winding machine (not shown) used for the winding work of the winding 7 employs a so-called double flyer system including two flyers (not shown) for feeding the winding 7. Then, the winding 7 is wound around the rotating shaft 5 simultaneously at two points symmetrically. In the following description, a winding method of the winding 7 at one place (first flyer) out of two places (two flyers) will be described in detail, and the winding 7 at the other place (second flyer) will be wound. About the method, since it is the same work as the winding 7 of one place, description is simplified.

As shown in FIG. 3, each tooth 9 is assigned with U, V, and W phases in this order. That is, No. 1 and No. 4 teeth 9 are the U phase, No. 2 and No. 5 teeth 9 are the V phase, and No. 3 and No. 6 teeth 9 are the W phase.
For example, when the winding start end 7a starts to be wound from the seventh segment 14, the winding 7 is first wound around the riser 15 of the seventh segment 14, and then in one direction (from left to right in FIG. 3). The first segment 14 is pulled around the riser 15 of the first segment 14 having the same potential as the seventh segment 14.

Subsequently, a winding portion 80 is formed by winding the winding 7 around the rotating shaft 5 (not shown in FIG. 3) between the armature core 6 and the commutator 13 in one direction. Then, the winding 7 is drawn into the slot 11 between the 1-6th teeth 9 existing in the vicinity of the 1st segment 14. Thereafter, the winding 7 is wound around the first tooth 9 by the concentrated winding method N / 2 times in the forward direction to form the forward winding coil 71a.

In the following description of the winding method of the winding 7, the rotating shaft 5 between the armature core 6 and the commutator 13 will be simply referred to as the rotating shaft 5 for easy understanding.
The N turns described above is the desired number of turns of the winding 7 wound around each tooth 9. That is, N / 2 times is half the desired number of turns. Furthermore, in this embodiment, the forward direction refers to the clockwise direction in FIG. 3, and the counterclockwise direction is referred to as the reverse direction. However, the present invention is not limited to this, and the forward direction may be the counterclockwise direction in FIG. 3, and the reverse direction may be the clockwise direction in FIG.

Subsequently, the winding 7 is pulled out from the slot 11 between the first and second teeth 9, and the winding 7 is wound around the rotating shaft 5 in one direction to form a winding portion 80. Further, it is wound around the riser 15 of the second segment 14 adjacent to the first segment 14. Next, the winding 7 is routed in one direction and is wound around the riser 15 of the eighth segment 14 having the same potential as the second segment 14. Thereafter, the winding portion 7 is wound around the rotating shaft 5 in one direction to form a wound portion 80. Further, it is pulled into the slot 11 between the 3rd and 4th teeth 9. Then, the winding 7 is wound around the third tooth 9 by the concentrated winding method N / 2 times in the reverse direction to form the reverse winding coil 73b.

Subsequently, the winding 7 is pulled out from the slot 11 between the second and third teeth 9, and the winding 7 is wound around the rotating shaft 5 in one direction to form a winding portion 80. Further, it is hung around the riser 15 of the third segment 14 adjacent to the second segment 14. Next, the winding 7 is routed in one direction and is wound around the riser 15 of the ninth segment 14 having the same potential as the third segment 14. Thereafter, the winding portion 7 is wound around the rotating shaft 5 in one direction to form a wound portion 80. Further, it is pulled into the slot 11 between the 4th and 5th teeth 9. Then, the winding 7 is wound around the fifth tooth 9 by the concentrated winding method N / 2 times in the forward direction to form the forward winding coil 75a.

Subsequently, the winding 7 is pulled out from the slot 11 between the 5th and 6th teeth 9, and the winding 7 is wound around the rotating shaft 5 in one direction to form a wound portion 80. Further, it is wound around the riser 15 of the 10th segment 14 adjacent to the 9th segment 14. Next, the winding 7 is routed in one direction and is wound around the riser 15 of the fourth segment 14 having the same potential as the tenth segment 14. Thereafter, the winding portion 7 is wound around the rotating shaft 5 in one direction to form a wound portion 80. Further, it is pulled into the slot 11 between the first and second teeth 9. Then, the winding 7 is wound around the first tooth 9 N / 2 times in the reverse direction by the concentrated winding method to form the reverse winding coil 71b.

Subsequently, the winding 7 is pulled out from the slot 11 between the 1-6th teeth 9, and the winding 7 is wound around the rotating shaft 5 in one direction to form a winding portion 80. Further, it is wound around the riser 15 of the 11th segment 14 adjacent to the 10th segment 14. Next, the winding 7 is routed in one direction and is wound around the riser 15 of the fifth segment 14 having the same potential as the eleventh segment 14. Thereafter, the winding portion 7 is wound around the rotating shaft 5 in one direction to form a wound portion 80. Further, it is pulled into the slot 11 between the second and third teeth 9. Then, the winding 7 is wound around the third tooth 9 by the concentrated winding method N / 2 times in the forward direction to form the forward winding coil 73a.

Subsequently, the winding 7 is pulled out from the slot 11 between the 3rd and 4th teeth 9, and this winding 7 is wound around the rotating shaft 5 in one direction to form a wound portion 80. Further, it is wound around the riser 15 of the sixth segment 14 adjacent to the fifth segment 14. Next, the winding 7 is routed in one direction and is wound around the riser 15 of the twelfth segment 14 having the same potential as the sixth segment 14. Thereafter, the winding portion 7 is wound around the rotating shaft 5 in one direction to form a wound portion 80. Further, it is pulled into the slot 11 between the 5th and 6th teeth 9. Then, the winding 7 is wound around the fifth tooth 9 N / 2 times in the reverse direction by the concentrated winding method to form the reverse winding coil 75b.

Subsequently, the winding 7 is pulled out from the slot 11 between the 4th and 5th teeth 9, and the winding 7 is wound around the rotating shaft 5 in one direction to form a wound portion 80. Further, the winding end 7 b is hung around the riser 15 of the seventh segment 14 adjacent to the sixth segment 14.

Thus, the U-phase forward winding coil (U) 71a and the reverse winding coil (-U) 71b are formed on the first tooth 9. The terminal of the U-phase forward coil 71 a of the first tooth 9 is connected to the 1-2 segment 14. The terminals of the U-phase reverse winding coil 71 b of the first tooth 9 are connected to the fourth segment 14 and the eleventh segment 14. Here, since the eleventh segment 14 is short-circuited to the fifth segment 14 by the connection line 25, the terminal of the U-phase reverse coil 71 b of the first tooth 9 is connected to the fourth to fifth segment 14. Is the same as

Further, a forward winding coil (W) 73a and a reverse winding coil (-W) 73b are formed on the third tooth 9. The terminal of the W-phase forward winding coil 73a of the third tooth 9 is connected to the 5-6th segment 14. The terminals of the W-phase reverse winding coil 73 b of the third tooth 9 are connected to the third segment 14 and the eighth segment 14. Since the 8th segment 14 is short-circuited to the 2nd segment 14 by the connection line 25, the terminal of the W-phase reverse winding coil 73b of the 3rd tooth 9 is the same as that connected to the 2-3th segment 14 It is.

Further, a forward winding coil (V) 75a and a reverse winding coil (-V) 75b are formed on the fifth tooth 9. The terminal of the V-phase forward winding coil 75 a of the fifth tooth 9 is connected to the 9th to 10th segments 14. The terminal of the W-phase reverse winding coil 75 b of the fifth tooth 9 is connected to the seventh segment 14 and the twelfth segment 14. Since the 12th segment 14 is short-circuited to the 6th segment 14 by the connection line 25, the terminal of the V-phase reverse winding coil 75b of the 5th tooth 9 is the same as that connected to the 6th-7th segment 14 It is.

On the other hand, the winding work of the winding 7 in the other place (second flyer) is centered on the rotating shaft 5 from the seventh segment 14 to which the winding start end 7a of the first place (first flyer) is connected. It starts from the first segment 14 that exists at a point-symmetrical position. That is, after the winding start end 7a is wound around the riser 15 of the first segment 14, the winding 7 is wound symmetrically with the winding 7 in the first flyer about the rotary shaft 5. It is advanced.

As a result, a V-phase forward winding coil (V) 72a and a reverse winding coil (-U) 72b are formed on the second tooth 9. Further, a forward winding coil (U) 74 a and a reverse winding coil (−U) 74 b are formed on the fourth tooth 9. Further, a forward winding coil (W) 76 a and a reverse winding coil (−W) 76 b are formed on the sixth tooth 9. The terminals of the coils 72a to 76b are connected between the predetermined segments 14.
As a result, between the adjacent segments 14, U, -W, V, -U, W, -V phase coils (coils 71a to 76b for each phase) are arranged so that both sides are different from each other and forward and reverse. Are sequentially connected in this order.

Here, the state of the winding 7 wound around the riser 15 of each segment 14 will be described in detail with reference to FIG.
FIG. 4 is an explanatory view showing a state where the winding 7 is wound around the riser 15.
As described in the winding method described above, the winding 7 is always drawn around in one direction (the direction from left to right in FIG. 3). Therefore, as shown in FIG. 4, the winding 7 drawn into the riser 15 from one direction is further drawn out in one direction after being wound around the riser 15. For this reason, the windings 7 intersect on the armature core 6 side (the upper side in FIG. 4) of the riser 15 to form a riser side intersecting portion 77. In other words, the winding 7 is wound around the riser 15 by the α winding method.

In such a configuration, when a voltage is applied between the brushes 21, a current in a predetermined direction is supplied to the coils 71a to 76b. A magnetic field in a predetermined direction is generated in a predetermined tooth 9, and a magnetic attractive force or a repulsive force is generated between the magnetic field and the permanent magnet 4 of the motor housing 2, and the armature 3 rotates. As a result of this rotation, the segments 14 in sliding contact with the brush 21 are sequentially changed, and so-called rectification is performed in which the direction of the current flowing through each of the coils 71a to 76b is switched. For this reason, the armature 3 rotates continuously.

As described above, in the first embodiment described above, the winding 7 drawn out from the armature core 6 is hung around the rotating shaft 5 in one direction (the direction from left to right in FIG. 3) to form a hung portion 80. . Then, the winding 7 is pulled out toward the commutator 13 through the hanging portion 80. The winding 7 wound around the riser 15 intersects on the armature core 6 side of the wound riser 15 to form a riser side intersection 77. For this reason, it is possible to prevent the winding 7 from loosening at a portion (under the neck) between the commutator 13 and the armature core 6. Therefore, the winding thickness of the winding 7 under the neck of the commutator 13 is eliminated, and the motor 1 can be reduced in size.

Further, the winding 7 drawn out from the armature core 6 is hung on the rotary shaft 5 to form a hung portion 80, thereby preventing loosening of the winding 7 wired between the armature core 6 and the commutator 13. The motor 1 can be further downsized. Furthermore, since the winding 7 is pulled out from the armature core 6 in the same direction (right direction in FIG. 3), the winding work of the winding 7 can be performed efficiently, and the number of winding steps can be reduced.

Further, the winding structure of the winding 7 is such that the winding 7 can be wound simultaneously at two points symmetrically about the rotating shaft 5. For this reason, a so-called double flyer system including two flyers (not shown) for feeding the winding 7 can be employed. Therefore, the winding man-hour can be further reduced.

(Second Embodiment)
Next, a second embodiment of the present invention will be described based on FIG. In addition, the same code | symbol is attached | subjected and demonstrated to the same aspect as 1st Embodiment.
FIG. 5 is a developed view of the segment 14 (the riser 15) and the teeth 9 of the armature 3 in the second embodiment, and the gap between the adjacent teeth 9 corresponds to the slot 11.

As shown in the figure, in the second embodiment, the motor 1 includes a motor housing 2 and an armature 3, and the motor 1 is a so-called 4-pole 6-slot 12-segment brushed motor 1. The winding 7 is wound around each tooth 9 by the concentrated winding method, and between adjacent segments 14, U, -W, V, The basic configuration in which the -U, W, -V phase coils (the coils 71a to 76b of each phase) are electrically connected in this order is the same as in the first embodiment.

(Wound winding method)
Here, the difference between the first embodiment and the second embodiment is that the winding method of the winding 7 is different. Hereinafter, a method of routing the winding 7 according to the second embodiment will be described in detail.
For example, when the winding start end 7a starts to be wound from the seventh segment 14, the winding 7 is first wound around the riser 15 of the seventh segment 14, and then in one direction (from left to right in FIG. 3). The first segment 14 is pulled around the riser 15 of the first segment 14 having the same potential as the seventh segment 14.

Subsequently, the winding portion 7 is wound around the rotating shaft 5 (not shown in FIG. 3) between the armature core 6 and the commutator 13 in the other direction (the direction from right to left in FIG. 3). Form. Then, the winding 7 is drawn into the slot 11 between the 1-6th teeth 9 existing in the vicinity of the 1st segment 14. Thereafter, the winding 7 is wound around the first tooth 9 by the concentrated winding method N / 2 times in the forward direction to form the forward winding coil 71a.

Subsequently, the winding 7 is pulled out from the slot 11 between the first and second teeth 9, and this winding 7 is wound around the rotary shaft 5 in the other direction to form a winding portion 80. Further, it is wound around the riser 15 of the second segment 14 adjacent to the first segment 14. Next, the winding 7 is routed in one direction and is wound around the riser 15 of the eighth segment 14 having the same potential as the second segment 14. Thereafter, the winding portion 7 is wound around the rotating shaft 5 in one direction to form a wound portion 80. Further, it is pulled into the slot 11 between the 3rd and 4th teeth 9. Then, the winding 7 is wound around the third tooth 9 by the concentrated winding method N / 2 times in the reverse direction to form the reverse winding coil 73b.

Subsequently, the winding 7 is pulled out from the slot 11 between the second and third teeth 9, and the winding 7 is wound around the rotating shaft 5 in one direction to form a winding portion 80. Further, it is hung around the riser 15 of the third segment 14 adjacent to the second segment 14. Next, the winding 7 is routed in one direction and is wound around the riser 15 of the ninth segment 14 having the same potential as the third segment 14. Thereafter, the winding portion 7 is hung around the rotating shaft 5 in the other direction to form a hung portion 80. Further, it is pulled into the slot 11 between the 4th and 5th teeth 9. Then, the winding 7 is wound around the fifth tooth 9 by the concentrated winding method N / 2 times in the forward direction to form the forward winding coil 75a.

Subsequently, the winding 7 is pulled out from the slot 11 between the 5th and 6th teeth 9, and this winding 7 is hung around the rotating shaft 5 in the other direction to form a hung portion 80. Further, it is wound around the riser 15 of the 10th segment 14 adjacent to the 9th segment 14. Next, the winding 7 is routed in one direction and is wound around the riser 15 of the fourth segment 14 having the same potential as the tenth segment 14. Thereafter, the winding portion 7 is wound around the rotating shaft 5 in one direction to form a wound portion 80. Further, it is pulled into the slot 11 between the first and second teeth 9. Then, the winding 7 is wound around the first tooth 9 N / 2 times in the reverse direction by the concentrated winding method to form the reverse winding coil 71b.

Subsequently, the winding 7 is pulled out from the slot 11 between the 1-6th teeth 9, and the winding 7 is wound around the rotating shaft 5 in one direction to form a winding portion 80. Further, it is wound around the riser 15 of the 11th segment 14 adjacent to the 10th segment 14. Next, the winding 7 is routed in one direction and is wound around the riser 15 of the fifth segment 14 having the same potential as the eleventh segment 14. Thereafter, the winding portion 7 is hung around the rotating shaft 5 in the other direction to form a hung portion 80. Further, it is pulled into the slot 11 between the second and third teeth 9. Then, the winding 7 is wound around the third tooth 9 by the concentrated winding method N / 2 times in the forward direction to form the forward winding coil 73a.

Subsequently, the winding 7 is drawn out from the slot 11 between the 3rd and 4th teeth 9, and this winding 7 is wound around the rotating shaft 5 in the other direction to form a wound portion 80. Further, it is wound around the riser 15 of the sixth segment 14 adjacent to the fifth segment 14. Next, the winding 7 is routed in one direction and is wound around the riser 15 of the twelfth segment 14 having the same potential as the sixth segment 14. Thereafter, the winding portion 7 is wound around the rotating shaft 5 in one direction to form a wound portion 80. Further, it is pulled into the slot 11 between the 5th and 6th teeth 9. Then, the winding 7 is wound around the fifth tooth 9 N / 2 times in the reverse direction by the concentrated winding method to form the reverse winding coil 75b.

As a result, a U-phase forward winding coil (U) 71a and a reverse winding coil (-U) 71b are formed on the first tooth 9. The terminal of the U-phase forward coil 71 a of the first tooth 9 is connected to the 1-2 segment 14. The terminals of the U-phase reverse winding coil 71 b of the first tooth 9 are connected to the fourth segment 14 and the eleventh segment 14.
Further, a forward winding coil (W) 73 a and a reverse winding coil (−W) 73 b are formed on the third tooth 9. The terminal of the W-phase forward winding coil 73a of the third tooth 9 is connected to the 5-6th segment 14. The terminals of the W-phase reverse winding coil 73 b of the third tooth 9 are connected to the third segment 14 and the eighth segment 14.

Further, a forward winding coil (V) 75a and a reverse winding coil (-V) 75b are formed on the fifth tooth 9. The terminal of the V-phase forward winding coil 75 a of the fifth tooth 9 is connected to the 9th to 10th segments 14. The terminal of the W-phase reverse winding coil 75 b of the fifth tooth 9 is connected to the seventh segment 14 and the twelfth segment 14.

By winding the windings 7 in this way, the windings 7 drawn from both sides of each tooth 9 always intersect each other in the vicinity of the drawn teeth 9 to form a tooth side intersection 78.
Therefore, according to the second embodiment described above, loosening of the winding 7 in the vicinity of the tooth 9 can be prevented, and the winding of the winding 7 between the tooth 9 and the commutator 13 can be eliminated. For this reason, size reduction of the motor 1 can be achieved.

The present invention is not limited to the above-described embodiment, and includes various modifications made to the above-described embodiment without departing from the spirit of the present invention.
For example, in the above-described embodiment, the case where the motor 1 is a drive source of an electrical component (for example, a radiator fan) mounted on the vehicle has been described. However, the present invention is not limited to this, and the above-described motor 1 can be applied as a drive source for various devices.

In the above-described embodiment, the motor 1 is a so-called 4-pole 6-slot 12 segment in which four permanent magnets 4 (magnetic poles) (the number of magnetic poles is four), six slots 11 and twelve segments 14 are provided. The case of the motor 1 with a brush has been described. However, the present invention is not limited to this, and the above-described embodiment can be applied to motors having various numbers of magnetic poles, slots, and segments.

In other words, in motors other than the 4-pole 6-slot 12-segment segment, as in the first embodiment described above, the winding 7 drawn from the armature core 6 is wound around the rotary shaft 5 in the same direction to form a wound portion 80. Then, it suffices to pull out toward the commutator 13 through the hanging portion 80. Then, the riser 15 may be formed by winding the winding 7 around the riser 15 by the α winding method.
Moreover, what is necessary is just to comprise so that the coil | winding 7 pulled out from the both sides of each tooth | gear 9 may mutually cross | intersect and form the teeth side cross | intersection part 78 like the above-mentioned 2nd Embodiment.

In the above-described embodiment, the case where the armature core 6 is formed by laminating a plurality of ring-shaped metal plates 8 in the axial direction has been described. Further, in the armature core 6, the case where a plurality of T-shaped teeth 9 are radially formed on the outer peripheral portion of the metal plate 8 at equal intervals along the circumferential direction has been described. However, the present invention is not limited to this, and the armature core 6 may be formed by pressure-molding soft magnetic powder. Moreover, it is good also as a division | segmentation core system which can be divided | segmented in the circumferential direction. Furthermore, the teeth 9 may have a predetermined skew angle so as to be inclined while twisting with respect to the axial direction.

In the above-described embodiment, the case where the connection line 25 is used to short-circuit the segments 14 having the same potential has been described. However, the present invention is not limited to this, and any conductive member that can short-circuit the segments 14 having the same potential may be used.
Furthermore, in the above-mentioned embodiment, the case where the coil | winding 7 was wound around the armature core 6 by what was called a double flyer system was demonstrated. However, the present invention is not limited to this, and the winding 7 may be wound around the armature core 6 by a so-called single flyer method in which only one flyer (not shown) that feeds the winding 7 is used. In this case, the winding work of the winding 7 at the first place (first flyer) and the winding work of the winding 7 at the other place (second flyer) in the double flyer system may be performed continuously.

DESCRIPTION OF SYMBOLS 1 ... Motor 2 ... Motor housing 3 ... Armature 4 ... Permanent magnet (magnetic pole)
5 ... Rotating shaft 6 ... Armature core 7 ... Winding 9 ... Teeth 11 ... Slot 13 ... Commutator 14 ... Segment 15 ... Riser 21 ... Brush 25 ... Connecting wire (short-circuit member)
71a, 73a, 75a ... forward winding

coils

71b, 73b, 75b ... reverse winding coil 77 ... riser side intersection 78 ... teeth side intersection 80 ... hung portion

Claims

A motor housing having a plurality of magnetic poles;
A rotating shaft rotatably supported by the motor housing;
An armature core having a plurality of teeth fixed to the rotating shaft and wound by a concentrated winding method;
A commutator fixed to the rotating shaft adjacent to the armature core and having a plurality of segments arranged in a circumferential direction;
A brush that is in sliding contact with the commutator and that feeds power to the winding;
With
The segment has a riser around which the winding is wound,
The winding drawn from the armature core forms a hanging portion that is wound around the rotation shaft in the same direction, and is drawn toward the commutator through the hanging portion,
The motor wound around the riser intersects the armature core side of the wound riser to form a riser side intersection.
A motor housing having a plurality of magnetic poles;
A rotating shaft rotatably supported by the motor housing;
An armature core having a plurality of teeth fixed to the rotating shaft and wound by a concentrated winding method;
A commutator fixed to the rotating shaft adjacent to the armature core and having a plurality of segments arranged in a circumferential direction;
A brush that is in sliding contact with the commutator and that feeds power to the winding;
With
A motor in which two lead lines of the winding drawn from both sides of each tooth intersect each other to form a tooth side intersection.
The number of teeth is set to 6, and the number of segments is set to 12,
A short-circuit member that short-circuits the segments with the same potential,
Each said tooth
The winding start end of the winding is connected to one segment of the segments adjacent to each other, and the winding end of the winding is connected to the other segment or a segment short-circuited to the other segment. A first coil formed by winding the winding in a forward direction so as to be continuous between the teeth corresponding to
A winding start end of the winding is connected to one of the other segments adjacent to each other, and a winding end of the winding is connected to the other segment or a segment short-circuited to the other segment; A second coil formed by winding the winding in the opposite direction so as to be continuous between teeth corresponding to the same phase;
With
Each of the teeth is assigned in the circumferential direction in the order of U phase, V phase, and W phase, and the first coil wound around each phase is used as a U phase, V phase, and W phase coil. When the wound second coil is a -U phase, -V phase, -W phase coil, respectively,
3. The motor according to claim 1, wherein coils of U phase, -W phase, V phase, -U phase, W phase, and -V phase are electrically connected in this order between the adjacent segments.
The number of teeth is set to 6, and the number of segments is set to 12,
When the teeth are numbered sequentially from 1 to 6 in the circumferential direction, and the segments are numbered sequentially from 1 to 12 in the circumferential direction,
The winding is
The winding start end is connected to the 7th segment,
Connected from segment 7 to segment 1,
Winded forward from No. 1 segment to No. 1 tooth,
Connected from the 1st tooth to the 2nd segment,
Connected from segment 2 to segment 8,
Wound in the reverse direction from the 8th segment to the 3rd tooth,
Connected from the 3rd tooth to the 3rd segment,
Connected from segment 3 to segment 9,
Winded forward from the 9th segment to the 5th tooth,
Connected from the 5th tooth to the 10th segment,
Connected from segment 10 to segment 4,
Wrapped in the reverse direction from the 4th segment to the 1st tooth,
Connected from the 1st tooth to the 11th segment,
Connected from segment 11 to segment 5,
Winded forward from the 5th segment to the 3rd tooth,
Connected from the 3rd tooth to the 6th segment,
Connected from segment 6 to segment 12,
Wound in the reverse direction from the 12th segment to the 5th tooth,
The motor according to claim 1 or 2, wherein a winding end end drawn from the fifth tooth is connected to the seventh segment again.
The motor according to any one of claims 1 to 4, wherein the winding is wound point-symmetrically around the rotation axis.