JP3667683B2 - Armature and manufacturing method thereof - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an armature and a manufacturing method thereof.
[0002]
[Prior art]
Conventionally, various methods for winding a winding around an armature have been proposed. For example, a short α connection method and a long α connection method, which are general methods for winding a winding around an armature, are known.
[0003]
FIG. 6 is an explanatory diagram of the short α connection method. In the drawing, in order to explain the manufacturing method in an easy-to-understand manner, the mark with “x” in the circle indicates that the winding 13 is from the comminator 11 toward the slot 10 (start of winding). The mark with indicates that the winding 13 is from the slot 10 toward the commutator 11 (end of winding). Other drawings are illustrated in the same manner.
[0004]
The short α-connection method exists between two slots 10 around which the winding 13 is wound, and connects the start and end of winding 13 to two adjacent connection claws. More specifically, first, the winding 13 is connected to the connection claw 12a of the commutator 11, and a plurality of turns are wound between the predetermined slots 10b and 10g, and the connection claw adjacent to the first connection claw 12a and the winding 13 in the winding direction. Connect to 12b. After that, the next predetermined slot 10 is wound a plurality of times, and the connection to the adjacent connection claw 12c is sequentially repeated.
[0005]
FIG. 8 is an explanatory diagram of the long α connection method. In the long α connection method, the winding start and the winding end of the winding 13 are wound outside the range of the two slots 10 to be wound and then connected to two adjacent connection claws. More specifically, the winding 13 is connected to the connection claw 12a, the predetermined slots 10h and 10a are wound a plurality of times, the crossover 14 is wound around the rotating shaft 4 and the connection to the adjacent connection claw 12b is sequentially repeated.
[0006]
[Problems to be solved by the invention]
However, when the short α connection method is performed, as shown in FIG. 7, the crossover wire 14 is separated from the rotating shaft 4, and a dead space 15 for the winding 13 is formed. This dead space 15 interferes with the rising portion of the winding 13 formed on both end faces of the armature core 8 when the winding 13 is wound around the slot 10. For this reason, the winding wire 13 cannot be wound around the slot 10 a predetermined number of times, and the space factor decreases.
[0007]
Further, when the winding 13 is wound around the slot 10 a predetermined number of times, the rising portion of the winding 13 becomes large. Therefore, it is necessary to lengthen the coil end 16 between the armature core 8 and the commutator 11, and there is a problem in miniaturizing the motor.
[0008]
Further, in the long α connection system, as shown in FIG. 9, the connecting wire 14 from the slot 10 to the commutator 11 is connected after being wound around the rotating shaft 4, so that the dead space 15 between the connecting wire 14 and the rotating shaft 4 is Less. For this reason, the space factor of the winding 13 is improved.
[0009]
However, since the connecting wire 14 is wound around the rotating shaft 4, a space for winding the connecting wire 14 around the coil end 16 is required. For this reason, as a result, the coil end 16 becomes long, and there is a problem in miniaturizing the motor.
[0010]
The present invention has been made to solve the above problems, and an object of the present invention is to provide an armature capable of shortening the coil end while improving the space factor of the winding, and a manufacturing method thereof. There is.
[0011]
[Means for Solving the Problems]
In order to achieve the above object, an invention according to claim 1 is provided with a rotating shaft having an armature core and a commutator, and wound in a slot between adjacent pole teeth of a plurality of pole teeth of the armature core. In the armature of the rotating electrical machine in which the winding is wound, two or more pole teeth are sandwiched between the first slot and the second slot in which the winding is wound among the slots, and from the commutator and gist that it is connected to the co Nmi stator such that the connecting wire back from the connecting wire toward the first slot and the second slot in the commutator intersect each other.
[0012]
The gist of the invention according to claim 2 is that, in the armature according to claim 1, the connecting wire is connected so as to approach the extent that the connecting wire does not contact the rotating shaft.
The gist of the invention according to claim 3 is that, in the armature according to claim 1 or 2, the connecting wire is connected to the slot that is far from the connecting claw of the commutator.
[0013]
According to a fourth aspect of the present invention, there is provided a rotating electric machine comprising a rotating shaft having an armature core and a commutator, wherein a winding is wound in a slot between adjacent pole teeth of a plurality of pole teeth of the armature core. In the armature manufacturing method, when winding the winding around the slot, two or more pole teeth are sandwiched between the first slot and the second slot around which the winding is wound. while it is configured to, from the the connecting wire toward the first slot from the commutator second slots and connecting wire returning to the commutator is summarized in that configured to intersect each other.
[0014]
The gist of the invention described in claim 5 is that, in the armature manufacturing method according to claim 4, the connecting wires are connected so as to approach each other so as not to contact the rotating shaft.
According to a sixth aspect of the present invention, in the armature manufacturing method according to the fourth or fifth aspect, the armature is wound in a direction opposite to the winding direction of the winding after the slots are wound a predetermined number of times. The gist is to rotate it by a predetermined angle.
[0015]
According to a seventh aspect of the present invention, in the armature manufacturing method according to any one of the fourth to sixth aspects, the connecting wire is connected to the slot that is far from the connecting claw of the commutator. Is the gist.
[0016]
(Function)
According to the invention described in claim 1, when wire winding in the slot, since the the connecting wire returning from the first connecting wire toward the slot and a second slot commutator to commutator and to be crossed with each other The crossover line approaches the axis of rotation. For this reason, the dead space between a crossover and a rotating shaft decreases, and the space factor of a coil | winding improves. Thereby, the coil end between an armature core and a commutator can be shortened.
[0017]
According to the invention described in claim 2, since the connecting wire is brought close to the rotating shaft, the dead space that can be formed between the connecting wire and the rotating shaft is reduced, and the space factor of the winding is improved. Further, by not allowing the winding to contact the rotating shaft, a space for winding the winding around the rotating shaft is not required, and the coil end can be shortened.
[0018]
According to the third aspect of the present invention, since the connecting wire is connected so as to go to the slot that is far from the connecting claw of the commutator, the connecting wire that goes from the commutator to the slot and the rotating shaft approach each other. Therefore, the dead space between the crossover and the rotating shaft is reduced, and the space factor of the winding can be improved.
[0019]
According to the invention described in claim 4, when winding the winding around the slot, the connecting wire from the commutator to the first slot and the connecting wire returning from the second slot to the commutator cross each other. The crossover approaches the axis of rotation. For this reason, the dead space between a crossover and a rotating shaft decreases, and the space factor of a coil | winding improves. Thereby, the coil end between an armature core and a commutator can be shortened.
[0020]
According to the invention described in claim 5, since the connecting wire is brought close to the rotating shaft, the dead space that can be formed between the connecting wire and the rotating shaft is reduced, and the space factor of the winding is improved. Further, by not allowing the winding to contact the rotating shaft, a space for winding the winding around the rotating shaft is not required, and the coil end can be shortened.
[0021]
According to the invention described in claim 6, in the equipment for processing the conventional connection method in order to rotate the armature by a predetermined angle in the direction opposite to the winding direction of the winding after winding between the slots a predetermined number of times. It can be easily implemented with only programming changes.
[0022]
According to the seventh aspect of the present invention, since the connecting wire is connected so as to go to the slot that is far from the connecting claw of the commutator, the connecting wire that goes from the commutator to the slot and the rotating shaft approach each other. Therefore, the dead space between the crossover and the rotating shaft is reduced, and the space factor of the winding can be improved.
[0023]
DETAILED DESCRIPTION OF THE INVENTION
DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, an embodiment of the invention will be described with reference to the drawings.
As shown in FIG. 1, an armature 3 is accommodated in a motor housing 2 constituting the DC motor 1, and a rotating shaft 4 of the armature 3 is rotatably supported by bearings 5 and 6.
[0024]
A plurality of magnets 7 are arranged on the inner wall of the motor housing 2 so as to surround the armature 3. The armature 3 includes an armature core 8, and a plurality of teeth 12 (12 in this embodiment) as teeth are extended radially from the central portion of the armature core 8 at equal angular intervals. Is formed. The space formed between adjacent teeth 9 constitutes slots 10a to 10l. The slots 10a to 10l are wedge-shaped grooves as shown in FIG.
[0025]
A commutator 11 is provided at one end of the armature 3. The commutator 11 is composed of 12 segments 12 corresponding to the slots 10a to 10l, and each segment 12 has connection claws 12a to 12l.
[0026]
Windings 13 are respectively wound between two predetermined slots 10a to 10l. The winding 13 is connected to the connection claws 12a to 12l of the segment 12 corresponding to the slots 10a to 10l where the winding start and the winding end are wound. A winding wire 13 between the commutator 11 and the slot 10 is a crossover wire 14.
[0027]
Next, a method of winding the winding 13 around the armature 3 will be described with reference to FIG.
As shown in FIG. 2, after connecting to the connection claw 12a arranged at a predetermined connection position, the connecting wire 14a is directed to the slot 10a, and the slot 10a and the slot 10f are wound a predetermined number of times.
[0028]
After the slot 10 is wound a predetermined number of times, the armature 3 is rotated by a predetermined angle (one segment, 30 degrees in this embodiment) in the direction opposite to the winding direction of the winding 13. Then, the connection claw 12l adjacent to the connection claw 12a is disposed in the connection position in the direction opposite to the winding direction of the winding 13. The connecting wire 14b returning from the slot 10f to the commutator 11 is crossed with the connecting wire 14a from the connecting claw 12a to the slot 10a, and is connected to the connecting claw 12l. The rotation direction of the armature 3 at this time is opposite to that in the conventional connection system. That is, in the conventional connection method, the armature 3 is rotated in the same direction as the winding direction, and the end of winding is connected to the connection claw 12b.
[0029]
Thereafter, similarly, the crossover wire 14a is directed to the next slot 10l, and winding is performed a predetermined number of times between the slot 10l and the slot 10e. Then, the connecting wire 14b returning from the slot 10e is connected to the connecting claw 12k adjacent to the connecting claw 12l. The same operation is sequentially repeated, and when the winding 13 is connected to the first connection claw 12a, the winding operation on the armature 3 is completed.
[0030]
As described above in detail, the present embodiment has the following effects.
(1) Since the crossover wire 14a from the slot 10 side toward the commutator 11 side approaches the rotary shaft 4 as shown in FIG. 3, the dead space 15 between the rotary shaft 4 and the crossover wire 14a is reduced.
[0031]
For this reason, it does not obstruct the rising part of the winding 13 that is formed by winding the slot 10 a plurality of times, and the winding 13 can be wound around the slot 10 many times. Will improve. Since the coil | winding 13 can be wound efficiently, the coil end 16 can be shortened and the DC motor 1 can be reduced in size.
[0032]
(2) Since a space for winding the winding wire 13 around the rotating shaft 4 is not required, it is not necessary to lengthen the coil end 16 excessively, and the coil end 16 can be shortened as compared with the long α connection system.
[0033]
(3) Since the rotation direction of the armature 3 is simply rotated in the reverse direction compared with the conventional rotation direction when connecting the winding end, it is easily implemented only by changing the programming in the equipment for processing the conventional connection method. And no new equipment costs are required.
[0034]
Note that the DC motor 1 rotates in the reverse direction when the traveling direction of the windings 13 is reversed, but if the direction of the winding 13, the magnetic pole of the magnet 7, or the energization direction is reversed, the DC motor 1 can be easily turned on. The rotation direction of the motor 1 can be made the same direction as usual.
[0035]
In addition to the above, it can be embodied in the following form.
In the above embodiment, the connecting wire 14a is directed to the slot 10a after being connected to the connecting claw 12a. However, as shown in FIG. 4, the slot 10l and 10e are wound a predetermined number of times toward the slot 10l. May be. In this case, substantially the same effect as the above embodiment can be obtained.
In the above embodiment, the connecting wire 14a is directed to the slot 10a after being connected to the connecting claw 12a. However, as shown in FIG. 5, the slot 10k is wound a predetermined number of times between the slots 10k and 10d. May be. In this case, substantially the same effect as the above embodiment can be obtained.
[0036]
In the above embodiment, the winding 13 is first wound between the slots 10a and 10f. However, the slot 10b and 10g may be wound first. In this case, substantially the same effect as the above embodiment can be obtained.
[0037]
In the above embodiment, the winding 13 is first wound between the slots 10a and 10f. However, it may be wound first between the slots 10c and 10h. In this case, substantially the same effect as the above embodiment can be obtained.
[0038]
In the above embodiment, the DC motor 1 is embodied as a rotating electric machine. However, if the rotating machine includes the armature 3 in which the winding 13 is wound around the armature core 8 fixed to the rotating shaft 4. It may be applied to other motors or generators.
[0039]
In the above embodiment, the armature core 8 includes the twelve slots 10, but the armature core 8 may be applied to an armature including the armature cores 8 other than twelve slots 10.
[0040]
In the above embodiment, the commutator 11 is composed of twelve segments 12, but may be applied to the armature 3 including the commutator 11 composed of segments 12 other than twelve segments 12.
[0041]
In the above embodiment, the five teeth 9 are sandwiched between the slots 10 around which the windings 13 are wound. However, the number of the teeth 9 between the slots 10 is not limited to five. The windings 13 may be wound so that there are at least one tooth 9 between the slots 10.
[0042]
【The invention's effect】
As described above in detail, according to the first to third aspects of the invention, it is possible to provide an armature that can easily improve the space factor of the winding and shorten the coil end.
[0043]
Moreover, according to the invention of Claim 4-7, the manufacturing method of the armature which can improve the space factor of a coil | winding and can shorten a coil end easily can be provided.
[Brief description of the drawings]
FIG. 1 is a side sectional view of a DC motor.
FIG. 2 is an explanatory diagram of a manufacturing method in the present embodiment.
FIG. 3 is a side view of an armature core and a commutator in the present embodiment.
FIG. 4 is an explanatory diagram of a manufacturing method in another example.
FIG. 5 is an explanatory diagram of a manufacturing method in another example.
FIG. 6 is an explanatory view of a manufacturing method in a short α connection method.
FIG. 7 is a side view of an armature core and a commutator in a short α connection system.
FIG. 8 is an explanatory view of a manufacturing method in the long α connection method.
FIG. 9 is a side view of an armature core and a commutator in the long α connection system.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... DC motor, 2 ... Motor housing, 3 ... Armature, 4 ... Rotary shaft, 7 ... Magnet, 8 ... Armature core, 9 ... Teeth, 10, 10a-10l ... Slot, 11 ... Commutator, 12 ... Segment, Reference numerals 12a to 12l, connection claws, 13 windings, 14, 14a, 14b, crossovers, 15 dead space, 16 coil ends.

Claims (7)

A rotary shaft (4) having an armature core (8) and a commutator (11) is provided, and slots (10 ) between adjacent pole teeth (9) in a plurality of pole teeth (9) of the armature core (8). ) In the armature of the rotating electrical machine in which the winding (13) is wound,
Among the slots (10), two or more pole teeth (9) are sandwiched between the first slot and the second slot around which the winding (13) is wound, and from the commutator (11) is the co Nmi connection to stator (11) such that the first connecting wire towards the slot (14a) and back from the second slot to the commutator (11) connecting wire (14b) and intersect one another An armature characterized by The armature according to claim 1,
An armature characterized in that the connecting wire (14) is connected so as not to contact the rotating shaft (4). The armature according to claim 1 or 2,
An armature characterized in that the crossover (14) is connected to the slot (10) which is far from the connection claw (12) of the commutator (11). A rotary shaft (4) having an armature core (8) and a commutator (11) is provided, and slots (10 ) between adjacent pole teeth (9) in a plurality of pole teeth (9) of the armature core (8). In the manufacturing method of the armature of the rotating electrical machine in which the winding (13) is wound around
When the winding (13) is wound around the slot (10), among the slots (10), pole teeth (between the first slot and the second slot around which the winding (13) is wound) 9) is configured such that two or more are sandwiched, and a crossover line (14a) from the commutator (11) to the first slot and a crossover line (14) from the second slot to the commutator (11) ( method of manufacturing an armature, characterized in that 14b) and are arranged to intersect each other. In the manufacturing method of the armature of Claim 4,
A method of manufacturing an armature, characterized in that the connecting wire (14) is connected so as to approach the rotating shaft (4) so as not to contact the rotating shaft (4). In the manufacturing method of the armature of Claim 4 or Claim 5,
A method for manufacturing an armature, comprising: winding a predetermined number of times between slots (10), and then rotating the armature (3) by a predetermined angle in a direction opposite to a winding direction of the winding (13). In the manufacturing method of the armature as described in any one of Claims 4-6,
A method for manufacturing an armature, characterized in that the crossover (14) is connected to the slot (10) which is far from the connection claw (12) of the commutator (11).

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