JPH10295062A - Coil-winding method for armature coil - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the coil winding time of a conductor and at the same time wind the conductor smoothly at the slot of a core without interferences among nozzles due to empty slots between coil parts. SOLUTION: In a coil-winding method of an armature coil where coil parts 30, 31, and 32 are formed by winding a conductor 5 that is simultaneously supplied from each of a plurality of nozzles of a coil winding device for winding the conductor 5 around a core 3 around a slot 4 skipping a predetermined number of slots of the core 3, the conductor 5 is wound around a slot 4, so that an empty slot 33A where no conductor 5 is wound exists among the adjacent coil parts 30, 31, and 32 that are formed simultaneously.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wire winding device for winding a wire around a core. The present invention relates to a method of winding an amateur coil for simultaneously forming respective coil portions.

[0002]

FIG. 8 is a side view of an armature 1 of a conventional motor. The armature 1 is rotatably provided inside a stator (not shown) having four poles. The amateur 1 includes a motor shaft 2, a core 3 having a slot 4 fixed to the motor shaft 2 and extending in the axial direction, a coil 6 formed by winding a conductive wire 5 around the core 3, A commutator 8 fixed to the motor shaft 2 on one side of the core 3 is provided.

FIG. 9 is a side view of the core 3. The core 3 has 21 slots 4 formed at equal intervals in the circumferential direction, and teeth 9 are provided between the slots 4. The coil 6 is configured by winding the conductive wire 5 around the core 3 in a so-called lap winding. The commutator 8 has 21 segments 1
1, an insulating piece 10 that electrically insulates the segments 11 from each other, and a hook 12 that protrudes from each segment 11 and is electrically connected to the conducting wire 5.

In the above-described motor, the armature 1 is rotated about the motor shaft 2 by electromagnetic action by supplying an external current to the coil 6 via a brush (not shown) in contact with the segment 11. Note that the segments 11 that are in contact with the brush are sequentially switched so that the direction of current flowing through the coil 6 is switched so that the armature 1 exerts a rotational force in a constant direction on the armature 1 at any rotational position.

[0005]

In the conventional amateur 1 described above, the number of the slots 4 of the core 3 is 21;
A conductor 5 is connected to each slot 4 by a winding device having one nozzle.
Is wound to form the coil 6, and there is a problem that much time is required for winding time.

SUMMARY OF THE INVENTION An object of the present invention is to solve such a problem, and it is possible to shorten a winding time of a conductor, and to eliminate interference between nozzles by an empty slot between coil portions. It is another object of the present invention to provide a method of winding an amateur coil in which a conductive wire is smoothly wound around a core slot.

[0007]

According to the method of winding an amateur coil of the present invention, when winding a conductor in a core slot with a plurality of nozzles, an empty space where the conductor is not wound between adjacent coil portions is provided. A conductor is wound around the slot so that each slot is present.

[0008] The empty slots between the coil portions are constituted by the same number of slots.

The number of slots is a multiple of three, and the number of nozzles is three.

The number of slots of a core provided inside a stator having four poles is 21.

In addition, a conductor is wound around the core in a lap winding.

[0012] A conductor is wound around the core in a wave winding.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION

Embodiment 1 FIG. FIGS. 1 to 3 are explanatory views for explaining a state in which the conductor 5 is wound around the core 3 in a lap winding manner.
FIG. 5 is a relationship diagram showing a connection relationship between the segments 11 of the commutator 8 and the conducting wires 5 wound around the slots 4 of the core 3.

In FIG. 1, the conductor 5 is simultaneously supplied from a nozzle (not shown) of a winding device for winding the conductor 5 around the core 3, and the first A coil portion 30, the first B coil portion 31, and the first C coil portion 31 are supplied. It is a figure when the coil part 32 is each formed simultaneously. In the first A coil section 30, the conductive wire 5 supplied from the first nozzle (not shown) jumps over the four slots 4 and the tooth No. 2 tooth 9 and tooth no. 6
For example, it is formed by winding ten or more times between the teeth 9. In the 1B coil portion 31, the conductive wire 5 supplied from the second nozzle (not shown) jumps over the four slots 4 and the tooth number. 9 and tooth No. 9 1
It is formed by winding more than ten times between the third teeth 9. In the first C coil portion 32, the conductive wire 5 supplied from the third nozzle (not shown) jumps over the four slots 4 and the tooth No. No. 16 tooth 9 and tooth no. It is formed by winding more than ten times between 20 teeth 9. And
A first A coil portion 30 is formed by the first nozzle,
When the first nozzle section forms the first B coil section 31 and the third nozzle section forms the first C coil section 32, the first B coil section 31 and the first B coil section 31 are interposed between the 1A coil section 30 and the 1B coil section 31. Between the coil portion 31 and the 1C coil portion 32 and between the 1C coil portion 34 and the 1A coil portion 30, the empty slots 3 where the conductor 5 is not wound, respectively.
3A is present.

FIG. 2 shows that the conductive wire 5 is supplied simultaneously from the nozzle (not shown) of the winding device, and the coil portion 36 of 2A, the coil portion 37 of 2B, and the coil portion 3 of 2C
FIG. 8 is a diagram when 8 is formed. The second A coil portion 36 is configured such that the conducting wire 5 supplied from the first nozzle (not shown) jumps over the four slots 4 and the teeth N
o. 3 tooth 9 and tooth no. It is formed by winding more than ten times between the teeth 9 and the teeth 7. 2B coil part 3
7 is a conductor 5 supplied from a second nozzle (not shown).
Jumps over four slots 4 and teeth no. 10
No. 9 and No. It is formed by winding more than ten times between the fourteen teeth 9. 2nd coil part 38
Indicates that the conductive wire 5 supplied from the third nozzle (not shown) jumps over the four slots 4 and the teeth No. 17 tooth 9 and tooth no. It is formed by winding ten and ten times between the teeth 9 and 21. Then, the second nozzle portion 36 is formed by the first nozzle and the second nozzle portion 36B is formed by the second nozzle.
When the second C coil portion 38 is formed by the third nozzle and the second C coil portion 38 is formed by the third nozzle, the second A coil portion 3 is formed.
6 and the 2B coil section 37, the 2B coil section 3
An empty slot 33B where the conductor 5 is not wound is also present between the coil section 7 and the 2C coil section 38 and between the 2C coil section 38 and the 2A coil section 36, respectively.

FIG. 3 is a view when the winding of the conductive wire 5 between the teeth 9 of the core 3 is completed, and the conductive wire 5 supplied from the first nozzle further causes the third A coil portion 42 and the fourth A
The coil section 45, the 5A coil section 48, the 6A coil section 51, and the 7A coil section 54 are continuously formed. Further, the 3B coil section 43, the 4B coil section 46, the 5B coil section 49, the 6B coil section 52, and the 7B coil section 55 are further connected by the conducting wire 5 supplied from the second nozzle. Is formed. In addition, the 3C coil portion 44, the 4C coil portion 47, the 5C coil portion 50,
The 6C coil section 53 and the 7C coil section 56 are continuously formed.

FIG. 4 shows the segment 11 of the commutator 8 and the core 3.
FIG. 5 is a relationship diagram showing a connection relationship with a conductive wire 5 wound around a slot 4 of FIG. For example, the fourth segment 1 of the commutator 8
The wire 5 supplied from the first nozzle is locked to the hook 12 attached to the tooth No. 1 tooth 9
And teeth No. Slot 4 between 2 teeth 9
And jump over the four slots 4 on the way to teeth N
o. 6 tooth 9 and tooth no. After winding around the slot 4 between the 7 teeth 9 and the slot 4 more than ten times to form the 1A coil portion 30, the first A coil portion 30 is locked to the hook 12 of the fifth segment 11 of the commutator 8. Subsequently, the conductor 5 is connected to the tooth No. 2 tooth 9 and tooth no. 3 jumps over the slot 4 between the teeth 9 and the four slots 4 on the way. 7 teeth 9 and teeth N
o. After winding around the slot 4 between the teeth 8 and the teeth 9 to form the second A coil portion 36, the commutator 8
The hook 12 of the sixth segment 11 of FIG. Such winding of the wire 5 and engagement of the wire 5 with the hook 12 are simultaneously performed on the wire 5 supplied from the second nozzle and the third nozzle, and the wire 5 is wound around each slot 4. A coil 20 is formed, and the respective coil sections are electrically connected to each other via adjacent segments 11 of the commutator 8.

In the above-mentioned winding operation of the amateur coil,
The conductors 5 are simultaneously supplied from the first to third nozzles, respectively, so that the winding time of the conductors can be shortened, and empty slots 33A and 33B exist between the coil portions formed simultaneously by the respective nozzles. As a result, interference between the nozzles of the winding device is less likely to occur, and the structure of the winding device is simplified accordingly. Further, in the above-described motor, an external current is supplied to the coil 20 via a brush (not shown) that contacts the segment 11,
The armature inside the stator is fixed to the motor shaft 2 by electromagnetic action.
However, this stator has 4 poles, whereas the number of slots 4 is an odd number of 21 places, and the value of the number of slots / the number of poles cannot be divided by an integer value. A torque ripple characteristic can be obtained, and it is particularly suitable for a power steering motor requiring a low torque ripple characteristic.

Embodiment 2 5 and 6 are views showing a state in which the conductor 5 is wound around the core 3 by a wave winding method. FIG. 7 is a diagram showing the conductor 11 wound around the segment 11 of the commutator 8 and the slot 4 of the core 3. FIG. 4 is an explanatory diagram for explaining a connection relationship of FIG.

The conductor 5 is simultaneously supplied from each nozzle (not shown) of the winding device, and at the same time, the first A coil portion 30, the first B coil portion 31, and the first C coil portion 32 are respectively formed. This is the same as the first embodiment.

FIG. 5 shows that the conducting wire 5 is supplied simultaneously from the nozzle (not shown) of the winding device, and the coil portion 50 of 2A, the coil portion 51 of 2B, and the coil portion 5 of 2C
FIG. 2 is a diagram when 2 is formed. The coil portion 50 of the second A is configured such that the conductive wire 5 supplied from the first nozzle (not shown) jumps over the four slots 4 and the teeth N
o. 12 tooth 9 and tooth no. It is formed by winding more than ten times between 16 teeth 9. In the 2B coil portion 51, the conductive wire 5 supplied from the second nozzle (not shown) jumps over the four slots 4 and the tooth No.
19 tooth 9 and tooth no. It is formed by winding more than ten times between the two teeth 9. 2C coil part 52
Indicates that the conductive wire 5 supplied from the third nozzle (not shown) jumps over the four slots 4 and the teeth No. 5 tooth 9 and tooth no. It is formed by winding more than ten times between the teeth 9 and the teeth 9. Then, the first nozzle is used for the second A
When the coil portion 50 is formed, the 2B coil portion 51 is formed by the second nozzle, and the 2C coil portion 52 is formed by the third nozzle, the 2A coil portion 50 and the 2B coil portion 52 are formed. Coil section 51, between the 2B coil section 51 and the 2C coil section 52, and between the 2B coil section 51 and the 2C coil section 5.
An empty slot 33B in which the conductor 5 is not wound is also present between the second and second A coil portions 50, respectively.

FIG. 6 is a view when the winding of the conducting wire 5 in the slot 4 of the core 3 is completed. The conducting wire 5 supplied from the first nozzle is used to further add the third A coil portion 53 and the fourth A coil portion. 56, a 5A coil section 59, a 6A coil section 62, and a 7A coil section 65 are formed. In addition, the 3B coil portion 54, the 4B coil portion 57, the 5B coil portion 60, the 6B coil portion 63, and the 7B coil portion 66 are further formed by the conductive wire 5 supplied from the second nozzle. Have been. Further, the third C coil portion 55 and the fourth wire 5 are further provided by the conducting wire 5 supplied from the third nozzle.
A C coil section 58, a 5C coil section 61, a 6C coil section 64, and a 7C coil section 67 are formed.

FIG. 7 shows the segment 11 of the commutator 8 and the core 3.
FIG. 4 is an explanatory diagram illustrating a connection relationship with a conductive wire 5 wound around a slot 4 of FIG. For example, the lead wire 5 supplied from the first nozzle is locked to the hook 12 attached to the twentieth segment 11 of the commutator 8, and the teeth No. 1 tooth 9 and tooth no. 2 jumps over the slot 4 between the teeth 9 and the four slots 4 on the way. 6 tooth 9 and tooth no. 7 teeth 9
After winding around the slot 4 more than ten times to form the 1A coil portion 30, it is locked to the hook 12 of the ninth segment 11 of the commutator 8. Subsequently, the conductor 5 is connected to the tooth No. 11 tooth 9 and tooth no. 12 jumps over slot 4 between teeth 9 and four slots 4 on the way. No. 16 tooth 9 and tooth no. After winding around the slot 4 between the teeth 9 and the teeth 17 of the commutator 8 more than ten times to form the second A coil portion 50, the hooks 12 of the nineteenth segment 11 of the commutator 8 are
To lock. Such winding of the wire 5 and engagement of the wire 5 with the hook 12 are simultaneously performed on the wire 5 supplied from the second nozzle and the third nozzle, and the wire 5 is wound around each slot 4. A coil 20 is formed, and each coil portion is electrically connected to each other via the segment 11 of the commutator 8.

In the above embodiment, the conductor 5 is wound so that the stator 3 has four poles and the core 3 having 21 slots has free slots at intervals of 120 °. Has been described, but a core having four slots and having 27 slots has 120 free slots.
導 The conductor may be wound so that two wires are present at an interval.

[0025]

As described above, according to the armature coil winding method of the present invention, the wires supplied simultaneously from the plurality of nozzles of the winding device are respectively jumped over the predetermined number of slots of the core. When a plurality of coil portions are simultaneously formed by winding in a slot, empty slots in which a conductor is not wound are present between the coil portions, so that the winding time of the conductor can be reduced and the winding time can be reduced. Interference between the nozzles of the wire device is less likely to occur, and the structure of the winding device is correspondingly simplified.

The number of empty slots between the coil portions is the same, so that the conductor can be wound around the core evenly, the conductor is wound around the core in a well-balanced manner, and vibration and sound A small motor can be obtained.

When the number of nozzles is set to two and the conductor supplied from the nozzle is wound around the core at the same time, when the number of slots in the core is odd, the conductor may be wound uniformly around the core. When the number of slots is even, the conductor can be wound on the core by the lap winding method, but there is a disadvantage that the conductor cannot be wound on the core by the wave winding method. However, when the number of nozzles is three and the number of slots is a multiple of three, it is possible to wind the conductor around the core by both the lap winding method and the wave winding method.

When the number of slots of the core is 21 and the number of poles of the stator is four, the value of the number of slots / the number of poles cannot be divided by an integer value, so that a low torque ripple characteristic of the motor can be obtained. It is particularly suitable for power steering motors that require low torque ripple characteristics.

[Brief description of the drawings]

FIG. 1 is a diagram showing a state in which a coil portion is wound around a core in the middle of winding of a conductive wire.

FIG. 2 is a view showing a state in which a coil portion is wound around a core in the middle of winding of a wire by lap winding.

FIG. 3 is a diagram showing a state in which a coil portion is wound around a core when winding of a conductive wire by lap winding is completed.

FIG. 4 is a relationship diagram showing a connection relationship between a commutator segment and a conductor wire wound around a core slot by lap winding.

FIG. 5 is a diagram showing a state in which a coil portion is wound around a core in the middle of winding of a conducting wire by wave winding.

FIG. 6 is a diagram showing a state where a coil portion is wound around a core when winding of a conductive wire by wave winding is completed.

FIG. 7 is a relationship diagram showing a connection relationship between a commutator segment and a conductor wound around a core slot by a wave winding.

FIG. 8 is a side view of a conventional amateur.

FIG. 9 is a side view of the core of FIG. 8;

[Explanation of symbols]

3 cores, 4 slots, 5 conductors, 9 teeth, 2
0 coil, 30 1A coil section, 31 1B coil section, 32 1C coil section, 33 empty slot, 36 2A coil section, 37 2B coil section, 38 2C coil section.

 ────────────────────────────────────────────────── ─── Continuing from the front page (72) Inventor Kyohei Yamamoto 2-6-1 Otemachi, Chiyoda-ku, Tokyo Mitsubishi Electric Engineering Co., Ltd.

Claims (6)

[Claims] 1. A coil, in which a plurality of conductors simultaneously supplied from a plurality of nozzles of a winding device for winding a conductor around a core jump over a predetermined number of slots of the core and are wound around the slots to form respective coil portions. A method of winding an armature coil, wherein the conductor is wound around the slot such that there are empty slots where the conductor is not wound between adjacent coil portions formed simultaneously. Line method. 2. The method according to claim 1, wherein each of the empty slots between the respective coil portions comprises the same number of slots. 3. The method according to claim 1, wherein the number of slots is a multiple of three and the number of nozzles is three. 4. The method of winding an amateur coil according to claim 3, wherein the number of slots of the core provided inside the stator having four poles is 21. 5. The method of winding an armature coil according to claim 1, wherein a conductive wire is wound around the core in a lap winding. 6. The core according to claim 1, wherein the core is wound with a wave.
A method for winding an amateur coil according to any one of claims 1 to 4.