JP2001346349A - Dynamoelectric machine and manufacturing method of dynamoelectric machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a dynamoelectric machine and its manufacturing method which enable the reduction of the number of components, the cost reduction and the reduction of assembly man-hours while insulation properties are secured. SOLUTION: A core insulator 30 which is attached to a laminated core 14 has a cylindrical part 31 fixed to a rotary shaft 14 and tooth cover elements 32 which are extended from the cylindrical part 31 radially and with same angular intervals so as to cover one side surface of the laminated core 15. Coil bobbin segments 33 are extended from the respective teeth cover elements 32 so as to cover inside surfaces of the respective slots 15b of the laminated core 15. The tip parts 33a of the coil bobbin segments 33 are made to protrude from the other side surface of the laminated core 15 when the core insulator 30 is attached to the laminated core 15.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotating electrical machine and a method of manufacturing the same, and more particularly, to an insulating structure between a core and a winding constituting a rotor and a method of manufacturing the same.

[0002]

2. Description of the Related Art Conventionally, in a rotating electric machine, for example, a DC motor, a method of coating an insulating powder on a core by insulating between a core and a winding constituting a rotor (armature). In addition, various methods have been proposed in which a resin molded product (core insulator) made of an insulating material is interposed between a core and a winding.

[0003] For example, as shown in FIG.
Insulating paper 53 is provided in each slot 52 of the laminated core 51 fixed to the core 51, and a resin lid 54 made of an insulating material having the same shape as the laminated core 51 is provided on both left and right sides of the laminated core 51. Abut. Then, the insulating paper 53 and the lid 5
4 is disposed on the laminated core 51, and then the winding is wound on the laminated core 51.
The winding is insulated from the laminated core 51 by the insulating paper 53 and the lid 54.

As shown in FIG. 12, a pair of resin left and right members made of an insulating material having the same shape as the laminated core 61 abutted on the left and right sides of the laminated core 61 fixed to the rotating shaft 60, respectively. Lids 62 and 63 are provided. The pair of left and right lids 62 and 63 have the same shape as the shape of each slot 64 on the surface facing the laminated core 61, respectively.
The coil bobbin pieces 62a and 63a disposed therein are formed to extend. Then, the pair of left and right lids 62 and 63 are respectively brought into contact with the left and right side surfaces of the laminated core 61, so that the coil bobbin pieces 62 a and 63 a are interposed in the respective slots 64. Next, if the winding is wound around the laminated core 61 from this state, the winding is wound on the pair of left and right lids 62,
63 ensures insulation for the laminated core 61.

[0005]

However, FIG.
In the insulation method shown by (2), the insulating paper 53 and the pair of left and right lids 54 are required, so that the number of parts is large, the cost is increased, and the number of assembling steps is increased.

On the other hand, the insulating method shown in FIG. 12 requires two insulating parts although the number of insulating parts is reduced by a pair of right and left lids 62 and 63 as compared with the insulating method shown in FIG.
Moreover, the coil bobbin pieces 62 of the pair of left and right lids 62, 63
The length of the a and 63a in the extending direction was short. Therefore, when the coil bobbin pieces 62a, 63a of the pair of left and right lids 62, 63 are fitted into the slot 64 from opposite directions,
Left coil bobbin piece 62a and right coil bobbin piece 6
A gap was formed between the slot 64 and the inner surface of the slot 64. As a result, when the winding is wound, the winding may bulge toward the exposed inner surface of the slot 64 and come into contact with the inner surface, so that the insulation may not be compensated.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to secure insulation and
An object of the present invention is to provide a rotating electrical machine and a method for manufacturing the same, which can reduce the number of parts and contribute to cost reduction and assembly man-hour reduction.

[0008]

According to a first aspect of the present invention, there is provided a rotating apparatus in which a core insulator is mounted on a laminated core of a rotor, and a winding is wound around a slot of the laminated core via the core insulator. In the electric appliance, the core insulator covers a plurality of teeth cover pieces covering one side surface of the laminated core, and extends from each of the teeth cover pieces to respectively cover a corresponding slot inner side surface of the laminated core. In addition, the gist of the invention is that the tip portion has a coil bobbin piece projecting from the other side surface of the laminated core.

According to a second aspect of the present invention, in the rotary electric machine according to the first aspect, the tip of the coil bobbin piece is chamfered. According to a third aspect of the present invention, in the rotary electric machine according to the first or second aspect, a plurality of cuts are formed in a tip portion of the coil bobbin piece.

According to a fourth aspect of the present invention, in the rotating electrical machine device, a core insulator is mounted on a laminated core of a rotor, and a winding is wound around a slot of the laminated core via the core insulator. The insulator covers a plurality of teeth cover pieces that cover one side surface of the laminated core, and extends from each of the teeth cover pieces to respectively cover the corresponding slot inner side surface of the corresponding laminated core, and has a tip end portion thereof. A coil bobbin piece projecting from the other side of the laminated core, and the winding is wound in a state where the core insulator is mounted on the laminated core, so that the laminated core passes through the core insulator. The gist is that they are fastened and fixed.

[0011] The invention according to claim 5 provides the invention according to claims 1 to 4.
In the rotary electric machine device according to any one of the above, the gist is that a protrusion protruding toward the slot side is formed at a tip end of the coil bobbin piece.

According to a sixth aspect of the present invention, in the rotary electric machine according to the fifth aspect, the position of one end of the teeth cover on one side of the teeth cover is set in a state where the core insulator is mounted on the laminated core. The gist of the present invention is that the coil bobbin piece is set at the tip end side from the other end face of the laminated core.

According to a seventh aspect of the present invention, there is provided a method of manufacturing a rotating electrical machine in which a core insulator is mounted on a laminated core of a rotor, and a winding is wound around a slot of the laminated core via the core insulator. A plurality of teeth cover pieces covering one side face of the laminated core, and each of the tooth cover pieces is formed to extend from each of the tooth cover pieces to cover the corresponding slot inner side face of the corresponding laminated core, and a tip end portion thereof is laminated. For a core insulator with a coil bobbin piece projecting from the other side of the core,
The gist is that a laminated core is formed by inserting a core sheet stamped and formed from a metal plate.

According to an eighth aspect of the present invention, in the method of manufacturing a rotating electrical machine according to the seventh aspect, a core sheet punched and formed from a metal plate is sequentially inserted into a core insulator to form a laminated core. The gist of what has been done.

According to a ninth aspect of the present invention, in the method for manufacturing a rotating electrical machine according to the seventh aspect, a predetermined number of core sheets stamped and formed from a metal plate are laminated on the core insulator and then inserted. The point is that the laminated core is formed as described above.

According to a tenth aspect of the present invention, there is provided a method of manufacturing a rotating electrical machine in which a core insulator is mounted on a laminated core of a rotor, and a winding is wound around a slot of the laminated core via the core insulator. A plurality of teeth cover pieces covering one side face of the laminated core, and each of the tooth cover pieces is formed to extend from each of the tooth cover pieces to cover the corresponding slot inner side face of the corresponding laminated core, and a tip end portion thereof is laminated. For a core insulator provided with a coil bobbin piece projecting from the other side of the core, by inserting a core sheet punched and formed from a metal plate to form a laminated core, and winding the winding,
The gist of the present invention is to tighten and fix the laminated core via the core insulator.

(Operation) According to the first aspect of the present invention,
When the coil bobbin pieces extended from the respective tooth cover pieces are inserted into the slots of the laminated core, the tooth cover pieces cover one side face of the laminated core and the coil bobbin pieces cover the inner side faces of the slot. or,
The tip of the coil bobbin piece projects from the other side of the laminated core. When the winding is wound around the laminated core, insulation is ensured by each tooth cover piece on one side face of the laminated core and by a coil bobbin piece on the inner side face of the slot. Also, the other side of the laminated core does not come into contact with the winding wound by the tip of the coil bobbin piece projecting from the other side. Therefore, the core insulator can ensure the insulation of the winding of the multilayer core only by mounting the multilayer core from one side.

According to the second aspect of the present invention, the chamfering of the tip of the coil bobbin piece makes it difficult for the winding wound around the tip to be damaged. According to the invention described in claim 3,
When the winding is wound by cutting, the tip is bent, so that the winding wound around the tip is less likely to be damaged.

According to the fourth aspect of the present invention, when the coil bobbin pieces extending from the respective tooth cover pieces are respectively inserted into the slots of the laminated core, each tooth cover piece covers one side surface of the laminated core. At the same time, the coil bobbin piece covers the inside surface of the slot. The tip of the coil bobbin piece projects from the other side of the laminated core. When the winding is wound around the laminated core, insulation is ensured by each tooth cover piece on one side face of the laminated core and by a coil bobbin piece on the slot inner side face. Also, the other side of the laminated core does not come into contact with the winding wound by the tip of the coil bobbin piece projecting from the other side. Therefore, the core insulator can ensure the insulation of the winding of the multilayer core only by mounting the multilayer core from one side. In addition, the laminated cores are tightened and fixed via the core insulators when the winding is wound in a state where the core insulators are mounted on the laminated cores, so that the core sheets constituting the laminated cores are separated from each other by caulking or the like. It is possible to omit a step of connecting and fixing so as not to prevent the connection.

According to the fifth aspect of the present invention, since the projecting portion projecting toward the slot side is formed (thickened) at the tip of the coil bobbin piece, the winding is wound. At this time, the tip of the coil bobbin piece which receives a force by the winding is hardly damaged. In addition, since the protruding portion is protruded toward the slot side, when the coil bobbin piece is inserted into the slot of the laminated core, the protruding portion can be easily inserted without interfering with the laminated core. Furthermore, since the protruding portion protrudes toward the slot side, the mold interposed between the coil bobbin pieces into which the laminated core is inserted can be smoothly removed in the direction in which the coil bobbin pieces protrude when the core insulator is formed. Can be smoothly removed in the direction opposite to the direction in which the coil bobbin pieces protrude.

According to the sixth aspect of the present invention, the end of the tooth cover on one side of the projecting portion is located on the tip end side of the coil bobbin piece from the other end face of the laminated core with the core insulator mounted on the laminated core. Since this is set, the tip end (projection) of the coil bobbin piece, which receives a force when the winding is wound, tends to be inclined (bent) toward the laminated core.
Therefore, the laminated cores are firmly fixed by the windings via the core insulators so as not to be separated from each other.

According to the seventh aspect of the present invention, a laminated core can be formed very easily by inserting a core sheet into a core insulator having a plurality of teeth cover pieces and a coil bobbin piece.

According to the eighth aspect of the present invention, the laminated core is formed very easily by sequentially inserting the core sheets into the core insulator. According to the ninth aspect of the present invention, a laminated core is formed very easily by inserting a predetermined number of core sheets punched and formed from a metal plate into a core insulator and then inserting the laminated core sheets.

According to the tenth aspect of the present invention, a laminated core can be formed very easily by inserting a core sheet into a core insulator having a plurality of teeth cover pieces and a coil bobbin piece. In addition, the laminated cores are tightened and fixed via the core insulators when the winding is wound in a state where the core insulators are mounted on the laminated cores, so that the core sheets constituting the laminated cores are separated from each other by caulking or the like. It is possible to omit a step of connecting and fixing so as not to prevent the connection.

[0025]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS. FIG. 7 shows a cross section of a DC motor 1 as a rotating electrical machine device.
The motor housing 2 includes a bottomed cylindrical yoke 3 and an end frame 4. The yoke 3 is provided with a bearing recess 5 at the bottom thereof, and a bearing 6 is fixed to the bearing recess 5. Further, a pair of magnets 8,
9 is fixed.

The end frame 4 is fixed to an opening of the yoke 3 and accommodates an armature 10 as a rotor in a space formed by the end frame 4 and the yoke 3. A bearing recess 11 is provided at a central position of the inner side surface 4a of the end frame 4, and a through hole 12 is formed in the bearing recess 11. Further, the bearing 1 is provided in the bearing recess 11.
The rotating shaft 14 of the armature 10 is rotatably supported by the bearing 13 and the bearing 6 fixed to the yoke 3.

A laminated core 15 is fixed to a rotating shaft 14 of the armature 10, and a winding 16 is wound around the laminated core 15, and a winding end of the winding 16 is a commutator 17 similarly fixed to the rotating shaft 14. Are connected to the commutator pieces 17a.

The laminated core 15 around which the winding 16 is wound is composed of a plurality of core sheets 20 as shown in FIG. The core sheet 20 is formed with twelve tooth pieces 21 extending radially from the central portion thereof at equal angular intervals. At the tip of each tooth piece 21, a projection 22 extending in an arc shape is formed on both sides. In the center of the core sheet 20, a through hole 23 for allowing the rotation shaft 14 to pass therethrough is provided.
Is transparently provided.

The laminated core 15 is formed by laminating a plurality of the core sheets 20 formed as described above.
Incidentally, the tooth pieces 21 constitute the teeth 15a of the laminated core 15, and the space formed between the adjacent teeth 15a constitutes the slot 15b.

A laminated core 1 composed of a plurality of core sheets 20
5 is provided with a core insulator 30 shown in FIGS. The core insulator 30 is a molded product made of an insulating thermoplastic resin, and includes a cylindrical portion 31 fixed to the rotating shaft 14 as shown in FIGS. At one end of the cylindrical portion 31, twelve teeth cover pieces 32 are formed to extend radially and at equal angular intervals.

Each of the teeth cover pieces 32 is formed of the laminated core 15
Are formed in the same shape as the teeth 15a. Therefore, the space formed between the adjacent tooth cover pieces 32 has the same space shape as the slot 15 b of the laminated core 15. As a result, when the core insulator 30 is mounted on the laminated core 15 as shown in FIG. 4, each tooth cover piece 32 is superimposed on the outer surface of each tooth 15 a on one side of the laminated core 15. As a result, when the winding 16 is wound between the slots 15b of the laminated core 15 from the state where the core insulator 30 is mounted on the laminated core 15, the winding 16 is formed by the teeth cover pieces 32 as shown in FIG. , Does not contact one side surface of the laminated core 15.

Each of the teeth cover pieces 32 has a slot 1 of the laminated core 15 on a surface opposite to the cylindrical portion 31.
A coil bobbin piece 33 inserted into 5b extends. Each coil bobbin piece 33 is, as shown in FIG.
Each piece is a continuous piece from one side outer peripheral part of the tooth cover piece 32 to one outer peripheral part of the adjacent tooth cover piece 32, and has a flat cross-sectional shape of the inner peripheral surface of the slot 15 b formed in the laminated core 15. It has the same shape as the cross-sectional shape. Therefore, as shown in FIG.
0 is mounted on the laminated core 15, each coil bobbin piece 3
3 are slots 15 of the laminated core 15 as shown in FIG.
b is superimposed on the inner peripheral surface. As a result, when the core insulator 30 is mounted on the laminated core 15, the winding 16
Is wound between the slots 15b of the laminated core 15, the windings 16 do not come into contact with the inner peripheral surface of the slots 15b of the laminated core 15 due to the coil bobbin pieces 33, as shown in FIG.

The length of each coil bobbin piece 33 (the length extending in the vertical direction from the teeth cover piece 32) is formed to be longer than the axial length of the rotating shaft 14 of the laminated core 15. Therefore, as shown in FIG.
When the coil bobbin piece 33 is mounted from one side, as shown in FIGS.
5 protrudes from the other side surface. In the present embodiment, it is projected between 1 mm and 2 mm. As a result, when the winding 16 is wound between the slots 15b of the laminated core 15 while the core insulator 30 is mounted on the laminated core 15, as shown in FIG. Winding 16
Does not come into contact with the other side of the teeth 15a of the laminated core 15.

Next, the features of the DC motor 1 configured as described above will be described below. (1) In this embodiment, when the core insulator 30 is mounted on the laminated core 15, the teeth 15 a on one side of the laminated core 15 are covered with the teeth cover pieces 32, and the coil bobbin pieces 33 are used to cover the slots 15 b of the laminated core 15. The inner peripheral surface is covered. Therefore, when the winding 16 is wound around the laminated core 15, the winding 16 does not contact one side surface of the laminated core 15 and the inner peripheral surface of the slot 15b. Moreover, since the tip 33a of the coil bobbin piece 33 projects from the other side of the laminated core 15, when the winding 16 is wound around the laminated core 15, the winding 16 is Do not touch Therefore, the core insulator 3
A value of 0 can ensure the insulation of the laminated core 15 with respect to the winding 16.

(2) In the present embodiment, the core insulator 30 is an article, and its cylindrical portion 31 is
And the core insulator 30 is simply inserted into the slot 15 b of the laminated core 15.
Attached to. Therefore, the number of components is reduced to one, so that cost can be reduced and the number of assembling steps can be reduced accordingly.

(3) In the present embodiment, the core insulator 30 is mounted from one side of the laminated core 15, that is, the side opposite to the side where the commutator 17 is fixed.
Accordingly, in a state where the laminated core 15 is fixed to the rotating shaft 14, the core insulator 30 is attached at any timing before the commutator 17 is fixed to the rotating shaft 14 or after the commutator 17 is fixed to the rotating shaft 14. can do. As a result, the degree of freedom in the manufacturing process is increased by that much, and the manufacturing efficiency can be improved.

(4) In this embodiment, one core insulator 30 is mounted from one side of the laminated core 15. Therefore, the core sheets 20 constituting the laminated core 15 have conventionally been required to be connected and fixed to each other by caulking or the like so as not to be shifted from each other. However, in this embodiment, since each coil bobbin piece 33 of the core insulator 30 contacts and supports the inner surface of the slot 15b of the laminated core 15, each core sheet 20 constituting the laminated core 15 does not shift. Therefore, the laminated core 1
At the time of forming 5, it is possible to omit a work process for connecting and fixing the core sheets 20 to each other by caulking or the like so as not to shift from each other, and it is possible to improve manufacturing efficiency.
Moreover, iron loss caused by caulking can be reduced. Further, the core insulator 30 is connected to the laminated core 1.
When the winding 16 is wound between the slots 15b of the laminated core 15 from the state of being mounted on the core insulator 5, the core insulator 30
By tightening and fixing the laminated core 15 through the step, the step of connecting and fixing the core sheets 20 constituting the laminated core 15 so as not to be separated from each other by caulking or the like can be omitted.

The embodiment of the present invention is not limited to the above embodiment, but may be implemented as follows. -As shown in FIG. 8, the tip 33 of the coil bobbin piece 33
Alternatively, a pair of cuts 33b may be formed in each of a. In this case, since the cut 33b is formed, the tip 33a between the pair of cuts 33b is easily bent. As a result, when winding the winding 16, the tip portion 33 a is less likely to damage the insulating coating (such as enamel) applied to the winding 16.

As shown in FIG. 9A, the corner of the tip 33a is chamfered so as to form a curved surface 33c.
As shown in (b), the corner of the tip 33a is tapered 33
It may be chamfered so as to be d. Also in this case, the chamfer makes it more difficult for the tip portion 33a to damage the insulating film (such as enamel) applied to the winding 16. Of course, the tip 33a of the coil bobbin piece 33 shown in FIG. 8 may be chamfered.

As shown in FIG. 10, the coil bobbin piece 3
Alternatively, a projection 33e projecting toward the slot 15b may be formed at the distal end 33a of the third unit. This protrusion 33
The position of the end (the lower end in FIG. 10) of the tooth cover piece 32 at position e is the state where the core insulator 30 is mounted on the laminated core 15 and the laminated core 15 (the teeth 15).
It is set on the tip side (upper side in FIG. 10) of the coil bobbin piece 33 from the other end face (a) of FIG. 10 (a).
The projection 33e of the tip 33a has a curved surface 33c.
Similarly, a curved surface 33f is formed.

In this manner, the projecting portion 33e projecting toward the slot 15b is formed at the tip portion 33a, and its thickness is increased. Tip 3 of coil bobbin piece 33 receiving force
3a is less likely to be damaged. As a result, the damaged tip 33
a is prevented from damaging the insulating film of the winding 16, and the insulation of the winding 16 is further ensured.

Further, since the projecting portion 33e projects toward the slot 15b, the coil bobbin piece 33 is
When inserted into the slot 15b, the projecting portion 33e does not interfere with the laminated core 15 and can be easily inserted. Further, since the protruding portion 33e protrudes toward the slot 15b, a mold (not shown) interposed between the coil bobbin pieces 33 into which the laminated core 15 is inserted is smoothly moved in the projecting direction of the coil bobbin pieces 33 when the core insulator 30 is formed. And the mold interposed between the coil bobbin pieces 33 in which the slots 15b are formed can be smoothly pulled out in the direction opposite to the direction in which the coil bobbin pieces 33 protrude.

Further, the position of the end (the lower end in FIG. 10) of the protruding portion 33e on the side of the tooth cover piece 32 is determined with the core insulator 30 mounted on the laminated core 15 (the teeth 15a). ) (FIG. 10)
The front end side of the coil bobbin piece 33 from the middle and upper end surfaces (FIG. 10)
(Middle, upper), the coil bobbin piece 33 receiving a force at the winding 16 when the winding 16 is wound
Is easily inclined (bent) toward the laminated core 15 (in the direction of arrow X in FIG. 10). Therefore, the laminated cores 15 are firmly fixed by the windings 16 via the core insulators 30 so as not to be separated from each other.

Further, since the protruding portion 33e is formed and the curved surface 33f is formed on the protruding portion 33e, the contact area between the winding 16 and the tip portion 33a is widened, and the insulating film of the winding 16 is further hardly damaged. .

In the above-described embodiment, the DC motor 1 is embodied as the rotating electrical machine. However, if the rotating machine is provided with a rotor in which a winding is wound around a laminated core fixed to a rotating shaft. , Other motors or generators.

In the above embodiment, the core insulator 30 is mounted on one side of the laminated core 15, that is, on the side opposite to the side on which the commutator 17 is fixed, but the core insulator 30 is mounted on the laminated core 15. Alternatively, the commutator 17 may be mounted from the side to which the commutator 17 is fixed.

In the above embodiment, the core insulator 30 is mounted after the laminated core 15 is fixed to the rotating shaft 14, but the core insulator 30 is mounted before the laminated core 15 is fixed to the rotating shaft 14. May be. That is, the laminated core 15 on which the core insulator 30 is mounted may be fixed to the rotating shaft 14. In this case, a predetermined number (a plurality) of core sheets 20 stamped and formed from a metal plate are laminated on the core insulator 30 and then inserted. Alternatively, core sheets 20 punched and formed from a metal plate are sequentially inserted into the core insulator 30 and laminated to a predetermined number. At this time,
Since each coil bobbin piece 33 of the core insulator 30 supports the tooth piece 21 of the core sheet 20, each core sheet 20 does not shift. As a result, the core sheets 20 need only be inserted one after another without being connected and fixed to each other by caulking or the like, and only a predetermined number of sheets are laminated.

The laminated core 15 on which the core insulator 30 is mounted is press-fitted and fixed to the rotating shaft 14. Therefore, also in this case, an operation process for connecting and fixing the core sheets 20 to each other by swaging or the like can be omitted. In addition, in configuring a manufacturing line, conventionally, it was necessary to supply the core sheet 20 and the core insulator 30 to the line. In this case, however, the core sheet 20 and the core insulator 30 were integrated in the previous process. The supply to the line is improved by one component.

When the core sheets 20 punched and formed from a metal plate are sequentially inserted into the core insulator 30 and laminated to a predetermined number, the position at which each core sheet 20 formed from the punching device is inserted is determined. It is preferable to insert the sheets one by one or one by one or a plurality of slots while the core sheet 20 is not rotated once. That is, variations occur in the core sheet 20 punched and formed from the metal plate due to variations in the thickness of the metal plate and variations in the punching accuracy of the punching device. In order to cancel this variation, the core sheet 20 to be inserted next is inserted into the previously inserted core sheet 20 by rotating and displacing one slot or a plurality of slots within a range where the core sheet 20 does not make one rotation. To Therefore, the variation is canceled, and the amount of unbalance during rotation of the armature 10 can be suppressed. As a result, it is possible to reduce the amount of putty for correcting the balance amount or the amount of cutting of the outer peripheral portion of the laminated core 15.

Next, technical ideas other than the technical ideas described in the claims ascertained from the above embodiments will be described below together with their effects. (1) In the rotating electrical machine according to the second aspect, the chamfer formed at the tip portion 33a of the coil bobbin piece 33 is a curved surface 3
3c, 33f.

With this configuration, the insulating coating applied to the winding 16 can be made harder to be damaged. (2) The rotating electrical machine according to claim 1, wherein a chamfer formed at a tip portion (33a) of the coil bobbin piece (33) is a tapered surface (33d).

With this configuration, the insulating coating applied to the winding 16 can be made more difficult to damage. (3) The rotating electrical machine according to claim 1, wherein one side surface of the laminated core (15) is a surface opposite to a side on which the commutator (17) is fixed.

With this configuration, the commutator 1
The core insulator 30 can be mounted at any timing before the 7 is fixed to the rotating shaft 14 or after the commutator 17 is fixed to the rotating shaft 14, thereby increasing the degree of freedom in the manufacturing process. The production efficiency can be improved.

(4) In the method for manufacturing a rotating electrical machine device according to the eighth aspect, when the core sheet 20 punched and formed from a metal plate is sequentially inserted into the core insulator 30, the core sheet 20 is formed from a punching device. The positions where the core sheets 20 are inserted one by one correspond to one slot,
Alternatively, a method for manufacturing a rotating electrical machine, wherein the core sheet 20 is inserted one after another while being shifted by a plurality of slots within a range not to make one rotation.

By manufacturing as described above, variations in the thickness of the metal sheet and variations in the core sheet 20 caused by variations in the punching accuracy of the punching device are offset. Therefore, the amount of unbalance during rotation of the armature 10 can be suppressed.

[0056]

According to the first to tenth aspects of the present invention,
The number of components can be reduced while ensuring insulation, and this can contribute to cost reduction and reduction in the number of assembly steps.

In addition, according to the second and third aspects of the present invention, it is possible to make the insulating coating applied to the winding less likely to be damaged.

[Brief description of the drawings]

FIG. 1 is a perspective view of a laminated core and a core insulator for describing the present embodiment.

FIG. 2 is a perspective view of a core insulator.

FIG. 3 is an explanatory view showing a state before the core insulator is mounted on the laminated core.

FIG. 4 is an explanatory view showing a state where the core insulator is mounted on the laminated core.

FIG. 5 is an essential part perspective view showing a relationship between a tip end portion of a coil bobbin piece and a laminated core.

FIG. 6 is an essential part cross-sectional view showing a state where a winding is wound around a laminated core via a core insulator.

FIG. 7 is a sectional view of a DC motor according to an embodiment of the invention.

FIG. 8 is an essential part perspective view showing a relationship between a tip end portion of a coil bobbin piece and a laminated core for explaining another example of the present invention.

9A is a cross-sectional view of a main part showing another example of the tip of the coil bobbin piece, and FIG. 9B is a cross-sectional view of a main part showing another example of the tip of the coil bobbin piece.

FIG. 10 is an essential part cross-sectional view showing another example of the tip of the coil bobbin piece.

FIG. 11 is an explanatory diagram for explaining a conventional core insulator.

FIG. 12 is an explanatory diagram for explaining a conventional core insulator.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... DC motor as rotary electric machine equipment 2 ... Motor housing 3 ... Yoke 4 ... End frame 10 ... Armature 14 ... Rotating shaft 15 ... Laminated core 15a ... Teeth 15b ... Slot 16 ... Winding , 17 ... commutator,
20 core sheet, 21 teeth piece, 30 core insulator, 31 cylinder part, 32 teeth cover piece, 3
3: coil bobbin piece, 33a: tip, 33b: cut, 33c, 33f: curved surface, 33d: tapered surface, 33e
... projections.

Continued on the front page (72) Inventor Koji Niimi 390 Umeda, Kosai-shi, Shizuoka Prefecture Asmo Co., Ltd. (72) Inventor Sumika Kamogawa 390 Umeda, Kosai-shi, Shizuoka Prefecture Asmo Co., Ltd. (72) Inventor Yasushi Ueda Shizuoka 390 Umeda, Kosai Prefecture, Japan Asmo Co., Ltd. (72) Inventor Yoshiaki Matsuura, 390 Umeda, Kosai City, Shizuoka Prefecture, Asuka Co., Ltd. (72) Inventor Yoshiyuki Matsushita 390 Umeda, Kosai City, Shizuoka Prefecture, Asmo Co., Ltd. (72) Invention Person Takamasa Sasaki 390 Umeda, Kosai-shi, Shizuoka Prefecture Asmo Co., Ltd.F-term within the company (reference)

Claims (10)

[Claims] A core insulator (30) is attached to a laminated core (15) of a rotor (10), and a winding (15) is wound around a slot (15b) of the laminated core (15) via the core insulator (30). In the rotary electric machine device wound with 16), the core insulator (30) includes a plurality of tooth cover pieces (32) covering one side surface of the laminated core (15), and the respective tooth cover pieces (32). And a coil bobbin piece (33) having a tip (33a) projecting from the other side of the laminated core (15), while covering the slot inner surface of the corresponding laminated core (15). A rotating electric machine characterized by having: 2. The rotating electrical machine according to claim 1, wherein a tip portion (33a) of the coil bobbin piece (33) is chamfered. 3. The rotating electrical machine according to claim 1, wherein a plurality of cuts (33b) are formed in a tip portion (33a) of the coil bobbin piece (33). 4. A core insulator (30) is mounted on the laminated core (15) of the rotor (10), and a winding (15) is wound on a slot (15b) of the laminated core (15) via the core insulator (30). In the rotary electric machine device wound with 16), the core insulator (30) includes a plurality of tooth cover pieces (32) covering one side surface of the laminated core (15), and the respective tooth cover pieces (32). And a coil bobbin piece (33) having a tip (33a) projecting from the other side of the laminated core (15), while covering the slot inner surface of the corresponding laminated core (15). The core insulator (3) is provided on the laminated core (15).
The rotating electric machine device, wherein the laminated core (15) is fastened and fixed via the core insulator (30) by winding the winding (16) with the (0) mounted. . 5. The rotating electrical machine according to claim 1, wherein a protruding portion (33e) protruding toward the slot (15b) is provided at a tip portion (33a) of the coil bobbin piece (33). ). 6. The rotating electrical machine device according to claim 5, wherein the teeth cover piece (32) of the protrusion (33e).
The position of the side end is set to the tip side of the coil bobbin piece (33) from the other end face of the laminated core (15) in a state where the core insulator (30) is mounted on the laminated core (15). A rotating electric machine device characterized by the above-mentioned. 7. A core insulator (30) is mounted on the laminated core (15) of the rotor (10), and a winding (15) is wound through a slot (15b) of the laminated core (15) via the core insulator (30). 16) a method of manufacturing a rotating electrical machine device wound with a plurality of teeth cover pieces (32) covering one side surface of the laminated core (15);
The coil bobbin pieces (33) projecting from the other side surface of the laminated core (15), each of which extends from the laminated core (15) and covers the corresponding slot inner surface of the laminated core (15). ), Wherein a laminated core (15) is formed by inserting a core sheet (20) stamped and formed from a metal plate into a core insulator (30) having the following. 8. A method for manufacturing a rotating electrical machine device according to claim 7, wherein a core sheet (20) stamped and formed from a metal plate is sequentially inserted into the core insulator (30) to form a laminated core (15). A method for manufacturing a rotating electrical machine, characterized by forming: 9. The method for manufacturing a rotating electrical machine device according to claim 7, wherein a predetermined number of core sheets (20) stamped and formed from a metal plate are laminated and inserted into the core insulator (30). A method for manufacturing a rotating electrical machine, wherein a laminated core (15) is formed by using the method. 10. A core insulator (30) is mounted on a laminated core (15) of a rotor (10), and a winding (15) is wound around a slot (15b) of the laminated core (15) via the core insulator (30). 16) a method of manufacturing a rotating electrical machine device wound with a plurality of teeth cover pieces (32) covering one side surface of the laminated core (15);
The coil bobbin pieces (33) projecting from the other side surface of the laminated core (15), each of which extends from the laminated core (15) and covers the corresponding slot inner surface of the laminated core (15). ), A core sheet (20) stamped and formed from a metal plate is inserted into the core insulator (30) to form a laminated core (15), and the winding (16) is wound around the core insulator (30). With this, the laminated core (15) is connected to the core insulator (3).
0) A method of manufacturing a rotating electrical machine, wherein the rotating electrical machine is fastened and fixed.