JPH11136885A - Motor stator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve reliability with a simple structure, by integrally-forming phase-to-phase insulating members for isolating a section between magnetic pole windings at the circumferential end of at least either of an inner collar or an outer collar, so as to insulate the winding and crossover wires. SOLUTION: A bobbin in formed out of synthetic resin such as plastic material with no glass fiber. This stator is provided with a tubular fitting section 41 fitting onto the periphery of magnetic pole teeth, a tabular inner collar 42 disposed at one end of the fitting section 41, a tabular outer collar 43 disposed at the other end of the fitting section 41, phase-to-phase insulating members 44 integrally formed at the circumferential end of the inner collar 42, a groove 44a serving as a folding position, and winding 45 wound around the outer circumference of the fitting section 41. It is thus possible to ensure insulation between the windings 45 of an adjacent bobbin with simple work, for example, only by folding the phase-to-phase insulating members 44 with the groove 44a serving as a boundary. Moreover, connection of the phase-to- phase insulating member 44 with the inner collar 42 makes it possible to prevent dropping-off.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a motor stator having a multi-phase winding, and more particularly to an improvement in insulation.

[0002]

2. Description of the Related Art FIGS. 33 and 34 are views showing a stator 10 of a conventional electric motor. The stator 10 of the electric motor is configured by combining a magnetic pole core 11, a bobbin 13, and a yoke core 15. The magnetic pole core 11 includes a plurality of magnetic pole teeth 12 formed to extend radially. Bobbin 13
Are formed of a synthetic resin, and are attached to the magnetic pole teeth 12, respectively, to form a multi-phase winding 14.

The bobbin 13 has a cylindrical fitting portion 13a fitted on the outer periphery of the magnetic pole teeth 12 described above, a plate-shaped inner flange portion 13b disposed at one end of the fitting portion 13a, and a bobbin 13. Part 1
3a and a plate-shaped outer flange portion 13b arranged on the other end side.

[0004] The stator 1 of the electric motor having such a structure.
0 has been often adopted for small electric motors in the past. In the case of a small motor, the performance is not so important, and the different-polarity windings 1 as shown in FIG.
4 was sufficiently secured, and it was not necessary to insulate between different poles by using an interphase insulating material.

However, as the size of the electric motor increases, the performance directivity increases. Further, due to the improvement of the manufacturing technology, the number of turns is increased as shown in FIG. Accordingly, insulation between different electrodes by an interphase insulating member has become indispensable.

Accordingly, as shown in FIG. 34, after the bobbin 13 is inserted into the magnetic pole teeth 12 of the magnetic pole iron 11, the yoke iron core 15 is fitted to complete the stator, and then the interphase insulating member 16 is connected to each winding. 14 to ensure insulation between different poles.

Further, in a model having a particularly large capacity, in order to prevent the winding 14 from jumping out or loosening,
A special insulating method such as applying a varnish treatment to the winding 14 or fixing the winding 14 with a self-fusing electric wire has been employed. Also, an insulating tube is inserted into the crossover to ensure insulation between the crossover, which is the end of the winding 14, and the winding 14 having the different polarity, and also to ensure insulation between the crossovers. Alternatively, a method of inserting an insulating member has been adopted.

[0008]

The above-described conventional motor stator 10 has the following problems. That is, 1. Since the interphase insulating member 16 is a separate piece from other members,
The number of parts increases.

[0009] 2. It takes time and effort to insert the interphase insulating member 16 between the different poles.

[0010] 3. When the bobbin 13 is inserted into the magnetic pole teeth 12, the windings 14 may rub against each other, causing insulation failure.

4. The inserted interphase insulating member 16 may fall off due to vibration or the like during work or operation of the electric motor, and the insulation between the different poles may be impaired.

5. During the magnetizing operation, the interphase insulating member 16 is damaged by the deformation of the windings 14, and the insulation between the different poles is impaired.

6. Winding 1 with varnish treatment or self-fusing electric wire
In the case where 4 is fixed, the material cost becomes expensive and a large number of steps are required for the heating operation.

7. When the crossover is insulated by an insulating member or an insulating tube of another piece, installation work is troublesome.

[8] During operation of the motor,
The windings 14 and the crossovers may rub against each other, resulting in poor insulation.

9. Part of the winding 14 and the crossover jumps out,
During work or operation, insulation may be impaired.

10. Due to aging during the operation of the motor, the flange 13a on the inner diameter side of the bobbin 13 may be deformed toward the inner diameter side of the stator, contacting the rotor and damaging the insulation.

The present invention has been made in view of the above circumstances, and provides a highly reliable electric motor stator that can insulate electric wires such as windings and crossovers with a simple configuration. Aim.

[0019]

Means for Solving the Problems In order to solve the above problems and to achieve the object, the invention according to claim 1 is connected to a plurality of annular connecting portions and each extends radially outward. And a yoke iron core arranged so as to surround the outside of the magnetic pole iron core, and a multiphase winding in which a winding is wound around each of the magnetic pole teeth via an insulating member. In the stator of the electric motor in which the wire is formed, the insulating member has a fitting portion fitted to the magnetic pole teeth, an inner flange formed inside the fitting portion, and an outer flange formed outside the fitting portion. And at least one of the insulating members is integrally formed on a circumferential end of at least one of the inner and outer flanges, and the magnetic pole winding is formed. An interphase insulating member for separating the wires from each other is provided.

According to a second aspect of the present invention, in the first aspect, the insulating member is formed of a synthetic resin material having a glass fiber content of a predetermined amount or less.

According to a third aspect of the present invention, in the first aspect of the present invention, the insulating member includes a first insulating member provided with the interphase insulating member on both sides of the inner flange. A second insulating member disposed adjacent to the first insulating member, wherein the inter-phase insulating member is provided only on the inner flange opposite to the first insulating member, and adjacent to the second insulating member; A third arrangement which is disposed and does not have the interphase insulating member.
And an insulating member.

According to a fourth aspect of the present invention, in the first aspect of the invention, a part of the interphase insulating member is formed to be thick.

According to a fifth aspect of the present invention, in the first aspect of the present invention, the interphase insulating member is provided with a wire locking groove at an axial end thereof.

According to a sixth aspect of the present invention, in the fifth aspect of the invention, a plurality of the wire locking grooves are provided, and the depths along the axial direction are different from each other.

According to a seventh aspect of the present invention, a multi-phase winding is formed by winding a plurality of magnetic poles radially installed inside an annular yoke of an iron core through an insulating member. In the stator of the electric motor, the insulating member includes a fitting portion fitted to the magnetic pole teeth, an inner flange formed inside the fitting portion, and an outer formed outside the fitting portion. With a collar,
An insulating piece bent toward the other flange portion is integrally formed at an axial end of one of the inner flange portion and the outer flange portion.

According to an eighth aspect of the present invention, in the invention of the seventh aspect, an engaging portion is provided on a tip side of the insulating piece, and the engaging portion is engaged with the other flange. A mating locking portion is provided.

According to a ninth aspect of the present invention, in the invention according to the eighth aspect, the insulating piece is provided on the inner flange portion, and a working handle is provided on a further end side of the engaging portion. Have been.

The invention described in claim 10 is the eighth invention.
Alternatively, in the invention described in Item 9, the insulating piece is formed such that the inner flange portion and the outer flange portion are brought close to each other by the engagement portion engaging with the locking portion.

The invention described in claim 11 is the eighth invention.
Alternatively, in the invention described in Item 9, the bending position of the insulating piece is set so as to press the winding in a state where the insulating piece is bent.

The invention described in claim 12 is the invention according to claim 8
Or, in the invention described in 9 above, the insulating piece includes a folded piece folded on the winding side, and the folded piece presses the winding in a state where the insulating piece is bent. .

The invention described in claim 13 is the seventh invention.
In the invention described in any one of the above items 1 to 12, an electric wire on an end side of the winding is arranged on an outer surface of the insulating piece.

The invention described in claim 14 is the first invention.
In the invention described in Item 3, an electric wire locking portion for locking an electric wire on the end side of the winding is formed on an outer surface of the insulating piece.

The invention described in claim 15 is the first invention.
In the invention described in 3 or 14, the insulating piece is provided with a wire rising groove for letting an end of the winding into and out of the insulating piece.

The invention described in claim 16 is the first invention.
In the invention described in any one of Items 3 to 15, the insulating piece is provided with a storage portion for storing a connection portion that connects the ends of the windings.

The invention described in claim 17 is the first invention.
In the invention described in Item 3, the insulating piece is provided with an electric wire locking groove which is disposed at a tip end side of the groove and locks an electric wire on an end side of the winding. The portion is provided with a wire penetration groove for allowing the winding to be inserted into and removed from the outer flange.

As a result of taking the above measures, the following operation occurs. That is, according to the first aspect of the present invention, since the interphase insulating member is not provided as a separate member, the cost can be reduced. In addition, when the insulating members are assembled, the phases can be insulated by a simple operation such as folding the inter-phase insulating member, and the inter-phase insulation can be reliably performed, thereby improving the reliability.

According to the second aspect of the present invention, the insulating member is formed of a synthetic resin material having a glass fiber content of not more than a predetermined amount. Therefore, it is possible to prevent the interphase insulating member from falling off.

According to the third aspect of the present invention, the insulating member includes a first insulating member provided with an inter-phase insulating member on both sides of the inner flange portion, and an inter-phase insulating member disposed adjacent to the first insulating member. A second insulating member in which the insulating member is provided only on the inner flange opposite to the first insulating member, and a third insulating member disposed adjacent to the second insulating member and provided with no interphase insulating member And the first insulating member, the second insulating member, and the third insulating member are inserted into the magnetic pole teeth.
The interphase insulating member can be automatically folded, and the operation can be simplified. In addition, since there is only one interphase insulating member between the windings, the distance between the windings can be minimized.

According to the fourth aspect of the present invention, by increasing the thickness of the portion in contact with the winding which is deformed when magnetized, insulation failure can be prevented due to deformation or breakage of the insulating member due to the deformation of the winding. .

According to the invention described in claim 5, the movement of the wire after assembly is restricted by locking the wire drawn from the winding into the wire locking groove provided in the interphase insulating member. It is possible to prevent the electric wires from jumping out and rubbing each other due to the operation vibration.

According to the invention described in claim 6, the movement of the wire after assembly can be further restricted, and the contact between the wires engaged with the wire locking groove can be prevented.

According to the invention described in claim 7, the winding can be covered by a simple operation of simply folding back the insulating piece to the upper part of the winding after the stator is assembled. Insulation failure due to jumping out of the electric wire can be prevented.

According to the eighth aspect of the present invention, the engaging portion is provided on the distal end side of the insulating piece, and the engaging portion with which the engaging portion engages is provided on the other flange. Therefore, the insulating piece can be securely fixed. Further, it is possible to prevent the inner flange portion from being deformed toward the inner diameter side of the stator during operation of the motor and coming into contact with the rotor.

According to the ninth aspect of the present invention, the insulating piece is provided on the inner flange, and the working handle is provided at the tip of the engaging portion. The action of engaging with the part is facilitated.

According to the tenth aspect of the present invention, the insulating piece is formed such that the inner flange portion and the outer flange portion are brought close to each other by the engagement of the engaging portion with the locking portion. ,
The inner and outer flanges can be firmly fixed.

According to the eleventh aspect, the bending position of the insulating piece is set so as to press the winding in a state where the insulating piece is bent. Regardless, the winding can be securely fixed.

According to the twelfth aspect of the present invention, the insulating piece includes a folded piece folded on the winding side, and the folded piece presses the winding in a state where the insulating piece is bent. As a result, the winding can be reliably fixed regardless of the height of the upper end of the winding.

According to the thirteenth aspect of the present invention, the electric wire at the end of the winding is disposed on the outer surface of the insulating piece. By laying the electric wire on the upper end of the wire, it is possible to prevent contact with the winding having the different polarity.

According to the fourteenth aspect of the present invention, since the wire locking portion for locking the wire at the end of the winding is formed on the outer surface of the insulating piece, the movement of the wire is further restricted. It is possible to further prevent contact with a crossover wire of a different polarity, and to further enhance reliability.

According to the fifteenth aspect of the present invention, the insulating piece is provided with the wire rising portion locking groove for allowing the end of the winding to be inserted into and taken out of the insulating piece. The starting position can be regulated accurately.

According to the sixteenth aspect of the present invention, since the storage portion for storing the connection portion connecting the ends of the respective windings is provided on the insulating piece, the charging portion can be insulated and fixed by a simple operation. .

According to the seventeenth aspect of the present invention, by securely fixing the electric wire, it is possible to insulate the electric wire from the winding having a different polarity or the electric wire.

[0053]

FIG. 1 is a perspective view showing a stator 20 of an electric motor according to a first embodiment of the present invention. FIG. 2 is an assembly process of a bobbin (insulating member) 40 incorporated in the stator 20. FIG. 3 is a view showing an assembly process of the stator 20.

The stator 20 includes a magnetic pole core 30 and a bobbin 4.
0 and the yoke core 50.

The magnetic pole core 30 has an annular connecting portion 31 and a plurality of magnetic pole teeth 32 extending radially outward from the connecting portion 31.

The bobbin 40 is formed of a synthetic resin such as a plastic material containing no glass fiber, and has a cylindrical fitting portion 41 fitted on the outer circumference of the magnetic pole teeth 32 described above.
A plate-like inner flange portion 4 arranged on one end side of the fitting portion 41
2 and a plate-shaped outer flange 43 arranged on the other end side of the fitting portion 41. An inter-phase insulating member 44 is integrally formed at a circumferential end of the inner flange 42. In addition,
In FIG. 2, reference numeral 44a denotes a groove which is a bending position.
A winding 45 is wound around the outer periphery of the fitting portion 41.

The stator 20 thus constructed is assembled as follows. That is, after winding a predetermined number of windings 45 around the outer periphery of the fitting portion 41 of the bobbin 40, the interphase insulating member 44 is folded toward the winding 45 with the groove 44a as a boundary, thereby completing six sets of the bobbins 40. Next, the fitting portion 41 of each bobbin 40 is inserted into each magnetic pole tooth 32. Next, the yoke 5
0 is fitted to complete the stator 20.

As described above, in the stator 20 of the electric motor according to the first embodiment, the inter-phase insulating member 44 is
The insulation between the windings 45 of the adjacent bobbins 40 can be ensured by a simple operation of folding only at the boundary a. Further, since the interphase insulating member 44 is connected to the inner flange portion 42, there is no possibility that the interphase insulating member 44 will fall off.

Further, since the bobbin 40 is formed of a synthetic resin containing no glass fiber, the work of bending the interphase insulating member can be easily performed, and the interphase insulating member 44 falls out of the groove portion 44a even after repeated bending. There is no danger.

In the present embodiment, the interphase insulating member 4
4 is provided integrally with the inner flange portion 42, but may be provided integrally with the outer flange portion 43. The same effect can be obtained as long as the glass fibers contained in the synthetic resin are equal to or less than a certain value.

FIGS. 4 to 6 show a bobbin 40A incorporated in a stator 20A of a motor according to a second embodiment of the present invention.
It is a figure which shows 40B, 40. In these drawings, the same functional portions as those in FIGS. 1 to 3 described above are denoted by the same reference numerals, and detailed description thereof will be omitted.

The bobbin (first insulating member) 40A of FIG. 4 differs from the bobbin 40 (third insulating member) in that the inter-phase insulating member 44 is not provided. The bobbin (second insulating member) 40B in FIG. 5 differs from the bobbin 40 in that the inter-phase insulating member 44 is provided only at one circumferential end of the inner flange 42.

The bobbins 40A, 40 thus constructed
When B and 40 are used, the stator 20A is assembled as shown in FIGS.

FIG. 7 shows a winding 45 wound around the fitting portion 41 of each of the bobbins 40A, 40B, 40. At this time, the inter-phase insulating members 44 of the bobbins 40B and 40 are not folded.

First, the bobbin 40A is inserted into the pair of magnetic pole teeth 32 facing each other. Next, the bobbin 40B is inserted into the magnetic pole teeth 32 at positions adjacent to the bobbin 40A in the clockwise direction. At this time, the inter-phase insulating member 44 of the bobbin 40B is pressed by the outer flange 43 of the bobbin 40A already inserted, and is automatically folded from the groove 44a. As a result, the winding 45 of the bobbin 40B and the bobbin 4
The interphase insulating member 44 is located between the winding 45A and the 0A winding 45.

Finally, the bobbin 40 is inserted into the remaining magnetic pole teeth 32. At this time, similarly, the interphase insulating member 44 is pressed by the outer flange 43 of the bobbins 40A and 40B already inserted and is automatically folded. That is, bobbin 4
The inter-phase insulating member 44 is located between the 0 winding 45 and the windings 45 of the bobbins 40A and 40B inserted earlier.

In the stator 20A according to the second embodiment, the stator 20A according to the first embodiment described above is used.
The same effect as that described above can be obtained, and the work of folding the interphase insulating member 44 in advance becomes unnecessary, and the work is further simplified. In addition, since there is only one interphase insulating member between the windings, the distance between the windings can be minimized. Note that the order of assembly is not limited to the case described above.

FIG. 8 is a view showing a bobbin 40C incorporated in the stator of the electric motor according to the third embodiment of the present invention. In these drawings, the same functional portions as those in FIG. 2 described above are denoted by the same reference numerals, and detailed description thereof will be omitted.

In the bobbin 40C, the thickness α1 of the interphase insulating member 46 is formed to be thicker than the inner flange 42. In addition,
In FIG. 8, reference numeral 46a denotes a groove.

With this structure, if the thick interphase insulating member 46 is arranged when the winding 45 is greatly deformed during magnetization, the pressing force of the winding 45 can be absorbed. 46 is not damaged and does not lead to insulation failure.

FIG. 9 is a view showing a bobbin 40D incorporated in a stator of a motor according to a fourth embodiment of the present invention. In these drawings, the same functional portions as those in FIG. 2 described above are denoted by the same reference numerals, and detailed description thereof will be omitted.

In the bobbin 40D, the thickness α2 of the inter-phase insulating member 47 is formed thinner than the inner flange 42. In addition,
In FIG. 9, reference numeral 47a denotes a groove. That is, in the portion where the winding 45 is not deformed at the time of magnetization as described above, the strength of the inter-phase insulating member 47 is hardly needed, and only the electric insulating function needs to be provided. For this reason, manufacturing costs can be reduced.

FIG. 10 is a view showing a bobbin 40E incorporated in the stator of the electric motor according to the fifth embodiment of the present invention. In this figure, the same parts as those in FIG. 2 described above are denoted by the same reference numerals, and detailed description thereof will be omitted.

In the bobbin 40E, an interphase insulating member 48 having the same thickness as the inner flange portion 42 is formed, and a thick portion 48a is formed at the axial center thereof. Note that 48b in FIG.
Indicates a groove. With such a configuration, only the portion that receives the pressing force when the winding 45 is deformed can be thickened to increase the strength, so that the manufacturing cost can be reduced and the interphase insulating member can be reduced. 48 can be prevented.

FIG. 11 is a view showing a bobbin 40F incorporated in a stator of a motor according to a sixth embodiment of the present invention. In this figure, the same parts as those in FIG. 2 described above are denoted by the same reference numerals, and detailed description thereof will be omitted.

In the bobbin 40F, interphase insulating members 60 are integrally formed at both ends in the circumferential direction of the inner flange portion 42. Three wire locking grooves 61 are provided at three axial ends of the interphase insulating member 60.

With such a configuration, as shown in FIGS.
Crossovers 45a to 45c, 45d to 4 which are the ends of the five
5f can be locked. Therefore, the crossover 45a
45c, 45d to 45f can be restricted, so that the crossovers 45a to 45c, 45d to 45f can be prevented from jumping out and rubbing between the crossovers due to driving vibration, and the reliability can be improved.

FIGS. 12A to 12C are enlarged views of a main part showing a modification of the bobbin 40F. That is, in (a) of FIG. 12, the provision of the engaging projections 62a in the groove portions 62b allows the connecting wires 45a to 45c and 45c to be more reliably.
It is possible to prevent jumping from d to 45f.

In FIG. 12B, the groove 6
Since the depths of 3a to 63c are respectively changed, the heights of the crossovers 45a to 45c and 45d to 45f are different from each other, and furthermore, the contact and the like can be prevented.

Further, in FIG. 12C, the depths of the grooves 64a to 64c are respectively changed and the engaging projections 65a to 65c are provided, respectively, so that the connecting wires 45a to 45c are more surely provided. 45c, 45d-4
The protrusion of 5f can be prevented.

FIG. 14 is a view showing a bobbin 70 incorporated in a stator of an electric motor according to a seventh embodiment of the present invention.
5 is a perspective view showing an assembly process of the stator, and FIG. 16 is a cross-sectional view of the stator taken along line XX in FIG. In these figures, the same functional parts as those in FIGS. 1 to 3 are denoted by the same reference numerals, and detailed description thereof will be omitted.

In the seventh embodiment, the bobbin 40
Is replaced by a bobbin 70. The bobbin 70 is formed of a synthetic resin such as a plastic material that does not contain glass fibers. The bobbin 70 has a cylindrical fitting portion 71 fitted on the outer circumference of the above-described magnetic pole teeth 32, and one end side of the fitting portion 71. It is composed of a plate-shaped inner flange 72 arranged and a plate-shaped outer flange 73 arranged on the other end side of the fitting portion 71. An insulating piece is integrally formed at an axial end of the inner flange 72. In FIG. 14, reference numeral 74a denotes a groove which is a bending position.

The stator thus constructed is assembled as follows. That is, the fitting portion 7 of the bobbin 70
After a predetermined number of windings 75 are wound around the outer periphery of the first bobbin 1 to complete six bobbins 70, the fitting portions 71 of each bobbin 70 are
Insert into 2. Next, after fitting the yoke portion 50, the insulating piece 74 is folded toward the winding 75 with the groove portion 74a as a boundary, and a crossover (not shown) is processed to complete the stator.

As described above, in the stator of the electric motor according to the seventh embodiment, the windings 75 and the crossovers can be covered by a simple operation of folding the inter-phase insulating member 74 at the groove 74a. And insulation failure due to the protrusion of the winding 75 and the crossover can be prevented.

In the present embodiment, the insulating piece 74 is provided integrally with the inner flange portion 72, but the outer flange portion 73 is provided.
May be provided integrally. Further, the insulating pieces 74 may be provided at the lower end of the inner flange 72 or at both ends.

FIG. 17 is a view showing a bobbin 70A incorporated in a stator of an electric motor according to an eighth embodiment of the present invention. In this figure, the same components as those in FIG. 14 are denoted by the same reference numerals, and detailed description thereof will be omitted. In the bobbin 70A, the insulating piece 76 is formed smaller than the width of the inner flange 72. Even with such a configuration, the same effects as those of the above-described seventh embodiment can be obtained.

FIG. 18 is a diagram showing a bobbin 70B incorporated in a stator of a motor according to a ninth embodiment of the present invention, and FIG. 19 is an enlarged view of a main part of the bobbin 70B. In this figure, the same components as those in FIG. 14 are denoted by the same reference numerals, and detailed description thereof will be omitted.

In the bobbin 70B, a projection 74b as an engagement portion is provided at a tip portion of the insulating piece 74, and a groove portion as a locking portion with which the projection 74b engages at an upper end portion in FIG. 73a is provided. In FIG. 19A, reference numeral 73b denotes an opening.

With this configuration, the insulating piece 74 and the outer flange 73 can be fixed, and the winding 75, the crossover, and the like are firmly fixed. Further, the inner flange portion 72 is deformed toward the inner diameter side of the stator due to aging during operation of the electric motor, and can be prevented from coming into contact with the rotor, so that the reliability can be further improved.

The protrusion on the insulating piece 74 side and the outer flange 73
It is only necessary to engage with the groove on the side, and the shape is not limited to the above. Moreover, you may make it form two or more.

FIG. 20 is a view showing a stator of a motor according to a tenth embodiment of the present invention.
FIG. 2B is a front view showing 0C, FIG. 2B is a top view, and FIG. 2C is a cross-sectional view taken along line YY in FIG.
In this figure, the same functional portions as those in FIGS. 14 to 16 are denoted by the same reference numerals, and detailed description thereof will be omitted.

The bobbin 70C has an insulating piece 77 instead of the above-described insulating piece 74. The insulating piece 77 includes an insulating piece main body 77a, and an engagement handle 77b provided on a distal end side of the insulating piece main body 77a. Also, the insulating piece body 7
A notch 77c, which is an engaging portion, is formed between 7a and the engaging handle 77b. In FIG. 20, reference numeral 77d denotes a groove serving as a folding position of the insulating piece main body 77a, and reference numeral 73b denotes a groove serving as a locking portion with which the notch 77c engages as described later.

With this configuration, the worker can carry out the folding operation with the locking handle 77b in the process of manufacturing the stator, so that the operation becomes very easy.
Also, by engaging the notch 77c with the groove 73b,
It is possible to prevent slippage after folding.

If the insulating piece 77 is provided on the outer flange portion 73 side, the engaging handle 77b protrudes toward the inner diameter side of the stator, and may come into contact with the rotor. It is provided only on the flange 72 side.

FIG. 21 is a sectional view showing a main part of a bobbin 70D as a modification of the bobbin 70C according to the tenth embodiment. In this figure, the same components as those in FIG. 20 are denoted by the same reference numerals, and detailed description thereof will be omitted.

In this modification, an insulating piece 78 is used instead of the insulating piece 77, and a groove 78a is provided instead of the groove 77d. The groove 78a has a distance β between its position and the notch 77c.
1 is set to be smaller than the distance β2 between the inner flange 72 and the outer flange 73. Therefore, the inner flange 72
And the outer flange portion 73 are inclined inward with each other. For this reason, the deformation of the inner flange portion 72 toward the stator inner diameter side can be more firmly prevented.

FIG. 22 is a view showing a bobbin 70E incorporated in the stator of the electric motor according to the eleventh embodiment of the present invention. In this figure, the same functional portions as those in FIGS. 14 to 16 are denoted by the same reference numerals, and detailed description thereof will be omitted.

An insulating piece 79 is provided in place of the insulating piece 74 described above. The insulating piece 79 includes an insulating piece main body 79a and an engaging handle 79b provided on a distal end side of the insulating piece main body 79a.
And Also, the insulating piece body 79a and the engaging handle 7
9b, a notch 79c is formed. In FIG. 22, reference numeral 79d denotes a groove which is a folding position of the insulating piece main body 79a. The height δ1 of the groove 79d and the groove 73c from the yoke 50 is set lower than the height δ2 from the yoke 50 to the upper end of the winding 75. In addition, the width γ of the insulating piece main body 79a is formed thin enough to make the insulating piece main body 79a sufficiently.

With such a configuration, in the process of manufacturing the stator, when performing the folding work with the engaging handle 79b, the worker performs the work by winding it around the upper end of the winding 75. . For this reason, the winding 75 can be firmly fixed by the insulating piece main body 79a. Therefore, even if the height of the upper end of the winding 75 is slightly different depending on the specification, a certain amount of fluctuation in the upper and lower limits of the upper end of the winding 75 can be absorbed, and the winding 75 can be firmly fixed.

FIG. 23 is a view showing a bobbin 70F incorporated in a stator of a motor according to a twelfth embodiment of the present invention.
FIG. 24 is a fragmentary cross-sectional view showing a step of assembling bobbin 70F. In these figures, the same functional portions as those in FIGS. 14 to 16 are denoted by the same reference numerals, and detailed description thereof will be omitted.

In the bobbin 70F, an insulating piece 80 is provided instead of the insulating piece 74 of the bobbin 70 described above. Insulation piece 8
Reference numeral 0 includes an insulating piece main body 80a and an engaging handle 80b provided on the distal end side of the insulating piece main body 80a. The engagement handle 80b is provided with a folded piece 80c via a groove 80e. In FIG. 23, reference numeral 80d denotes a groove portion which is a turning position of the insulating piece main body 80a.

With such a configuration, in the process of manufacturing the stator, the operator folds the folded piece 80c downward from the groove 80e. Next, the insulating piece main body 80a and the engaging handle 80b are folded back from the groove 80d. At this time, the folded piece 80c that has been folded earlier is the winding 75 and the insulating piece body 8
0a, and presses the winding 75 downward.

Therefore, the winding 7 is formed by the insulating piece body 79a.
5 can be firmly fixed. Therefore, the winding 7
5 Even if the height of the upper end is slightly different depending on the specification, a certain amount of fluctuation in the upper and lower limits of the upper end position of the winding 75 can be absorbed, and the winding 75 can be firmly fixed.

FIG. 25 is a diagram showing a motor stator according to a thirteenth embodiment of the present invention. In the present embodiment,
After folding the insulating piece 74 above the winding 75, the connecting wires 75 a to 75 c at the end side of the winding 75 are laid on the upper surface of the insulating piece. With such a configuration, for example, when a single wire is used to form a winding having the same phase, the connecting wires 75a to 75a to
Even in the case where it is difficult to perform insulation by inserting an insulating tube or the like and the insulation 75p is continuous, insulation from the winding 75 having the different polarity can be ensured.

FIG. 26 is a view showing a bobbin 70G incorporated in a stator of a motor according to a fourteenth embodiment of the present invention.
FIG. 27 is a top view showing the stator to which the bobbin 70G is attached.

In these figures, the same functional portions as those in FIG. 20 are denoted by the same reference numerals, and detailed description thereof will be omitted.

The bobbin 70G includes an insulating piece 81 instead of the above-described insulating piece 77. The insulating piece 81 includes an insulating piece main body 81a, and an engagement handle 81b provided on a distal end side of the insulating piece main body 81a. Also, the insulating piece body 8
A notch 81c is formed between 1a and the engaging handle 81b. In FIG. 26, reference numeral 81d denotes an insulating piece main body 81a.
3 shows a groove portion which is a folding position of the fold. A plurality of projections 81 serving as wire locking portions are provided on the upper surface of the insulating piece main body 81a.
e is provided.

With this structure, the same effects as in the tenth embodiment described above can be obtained, and the crossovers 75a to 75c can be hooked on the projections 81e. Since the engagement can be reliably performed and the movement can be restricted, insulation failure due to contact between the connecting wires 75a to 75c can be prevented.

FIG. 28 is a view showing a stator of an electric motor according to a fifteenth embodiment of the present invention.
FIG. 2B is a front view showing 0H, and FIG. 2B is a top view showing the stator. In these figures, the same functional portions as those in FIG. 20 are denoted by the same reference numerals, and detailed description thereof will be omitted.

The bobbin 70H includes an insulating piece 81 instead of the above-described insulating piece 77. The insulating piece 82 includes an insulating piece main body 82a, and an engagement handle 82b provided on a distal end side of the insulating piece main body 82a. Also, the insulating piece body 8
A notch 82c is formed between 2a and the engaging handle 82b. In FIG. 28, reference numeral 82d denotes an insulating piece main body 82a.
3 shows a groove portion which is a folding position of the fold. In addition, an electric wire rising groove 82e is provided in the insulating piece main body 82a.

With this configuration, the operator twists the lead wire 75d of the winding 75 at the rising position during assembly, folds the insulating piece main body 82a, and fixes the lead wire 75d in the groove 82e. (Here, only the lead wire 75d of one winding 75 is shown).

As a result, the rising position of the lead wire 75d, such as the beginning and end of winding of each winding 75, is accurately determined. In addition, it is possible to prevent the case and the rotor from coming into contact with the case due to the slack of the lead wire.

FIG. 29 is a view showing a stator of a motor according to a sixteenth embodiment of the present invention.
FIG. 2B is a front view showing 0I, and FIG. 2B is a top view showing the stator.

In these figures, the same reference numerals are given to the same functional portions as in FIG. 20, and the detailed description thereof will be omitted.

The bobbin 70I has an insulating piece 83 in place of the above-described insulating piece 77. The insulating piece 83 includes an insulating piece main body 83a, and an engagement handle 83b provided on a tip side of the insulating piece main body 83a. Also, the insulating piece body 8
A notch 83c is formed between 3a and the engaging handle 83b. In FIG. 29, reference numeral 83d denotes an insulating piece main body 83a.
3 shows a groove portion which is a folding position of the fold. In addition, an electric wire rising groove 83e is provided in the insulating piece main body 83a.

With this configuration, the same effects as those in the fifteenth embodiment can be obtained.

FIG. 30 is a view showing a bobbin 70J incorporated in a stator of an electric motor according to a seventeenth embodiment of the present invention.
FIG. 31 is a top view showing the stator incorporating the bobbin 70J. In these figures, the same functional portions as those in FIG. 20 are denoted by the same reference numerals, and detailed description thereof will be omitted.

The bobbin 70J has an insulating piece 84 in place of the above-described insulating piece 77. The insulating piece 84 includes an insulating piece main body 84a, and an engagement handle 84b provided on a distal end side of the insulating piece main body 84a. Also, the insulating piece body 8
A notch 84c is formed between 4a and the engaging handle 84b. In FIG. 30, reference numeral 84d denotes an insulating piece main body 84a.
3 shows a groove portion which is a folding position of the fold. Further, on the upper surface of the insulating piece main body 81a, a storage portion 84e for storing a connection portion (not shown) such as a neutral point connection portion in which the tips of the leading ends 75d such as the beginning and end of each winding 75 are collectively connected. Is provided.

In the present embodiment, the insulating piece 84a is folded over the winding 75, and the end of the lead wire 75d is electrically connected by a method such as welding, soldering, or terminal crimping to form a connection portion. Then, it is stored in the storage section 84e.

With such a configuration, the connection portion can be stored and fixed and electrically insulated by a simple operation of storing the connection portion in the storage portion 84e.

FIG. 32 is a view showing a stator of an electric motor according to an eighteenth embodiment of the present invention.
FIG. 2B is a front view showing 0L, and FIG. 2B is a top view showing the stator. In these figures, the same functional portions as those in FIG. 20 are denoted by the same reference numerals, and detailed description thereof will be omitted.

The bobbin 70L includes an insulating piece 85 instead of the above-described insulating piece 77. The insulating piece 85 includes an insulating piece main body 85a, and an engagement handle 85b provided on a distal end side of the insulating piece main body 85a. Also, the insulating piece body 8
5a and the engaging handle 85b, the wire locking groove 85 is provided.
c is formed. In FIG. 32, reference numeral 85d denotes a groove which is a folding position of the insulating piece main body 85a. On the other hand, an axial end of the outer flange portion 73 is provided with an electric wire penetration groove 73.
d is provided.

With this configuration, when the operator assembles the stator, the connecting wires 75a to 75c are connected to the insulating piece main body 8
5a is locked in the wire locking groove 85c. Next, while folding the insulating piece 85a above the winding 75, the connecting wire 75a
To 75c are passed through the wire penetration groove 73d. As a result, the crossovers 75a to 75c are insulated and fixed to the winding 75 and the crossovers, so that insulation failure can be prevented.

It should be noted that the present invention is not limited to the above-described embodiment, and it goes without saying that various modifications can be made without departing from the spirit of the present invention.

[0125]

According to the first aspect of the present invention, since the interphase insulating member is not provided as a separate member, the cost can be reduced. In addition, when the insulating members are assembled, the phases can be insulated by a simple operation such as folding the inter-phase insulating member, and the inter-phase insulation can be reliably performed, thereby improving the reliability.

According to the second aspect of the present invention, the insulating member is formed of a synthetic resin material having a glass fiber content of not more than a predetermined amount. Therefore, it is possible to prevent the interphase insulating member from falling off.

According to the third aspect of the present invention, the insulating member includes a first insulating member provided with an inter-phase insulating member on both sides of the inner flange portion, and a first insulating member disposed adjacent to the first insulating member. A second insulating member in which the insulating member is provided only on the inner flange opposite to the first insulating member, and a third insulating member disposed adjacent to the second insulating member and provided with no interphase insulating member And the first insulating member, the second insulating member, and the third insulating member are inserted into the magnetic pole teeth.
The interphase insulating member can be automatically folded, and the operation can be simplified. In addition, since there is only one interphase insulating member between the windings, the distance between the windings can be minimized.

According to the fourth aspect of the present invention, by increasing the thickness of the portion in contact with the winding which is deformed when magnetized, insulation failure due to deformation or breakage of the insulating member due to deformation of the winding can be prevented. .

According to the fifth aspect of the present invention, the movement of the wire after assembly is restricted by locking the wire drawn from the winding into the wire locking groove provided in the interphase insulating member. It is possible to prevent the electric wires from jumping out and rubbing each other due to the operation vibration.

According to the invention described in claim 6, the movement of the wires after assembly can be further restricted, and the contact between the wires engaged with the wire locking grooves can be prevented.

According to the invention described in claim 7, the winding can be covered by a simple operation of simply turning the insulating piece over the winding after the stator is assembled. Insulation failure due to jumping out of the electric wire can be prevented.

According to the invention described in claim 8, the engaging portion is provided on the tip side of the insulating piece, and the engaging portion with which the engaging portion engages is provided on the other flange portion. Therefore, the insulating piece can be securely fixed. Further, it is possible to prevent the inner flange portion from being deformed toward the inner diameter side of the stator during operation of the motor and coming into contact with the rotor.

According to the ninth aspect of the present invention, the insulating piece is provided on the inner flange, and the working handle is provided at the tip of the engaging portion. The action of engaging with the part is facilitated.

According to the tenth aspect of the present invention, the insulating piece is formed so that the inner flange portion and the outer flange portion are brought close to each other by the engaging portion engaging the engaging portion. ,
The inner and outer flanges can be firmly fixed.

According to the eleventh aspect of the present invention, the bending position of the insulating piece is set so as to press the winding in a state where the insulating piece is bent. Regardless, the winding can be securely fixed.

According to the twelfth aspect of the present invention, the insulating piece includes a folded piece folded on the winding side, and the folded piece presses the winding in a state where the insulating piece is bent. As a result, the winding can be reliably fixed regardless of the height of the upper end of the winding.

According to the thirteenth aspect of the present invention, since the electric wire on the end side of the winding is disposed on the outer surface of the insulating piece, the insulating member is folded into the upper part of the winding and then the insulating member is formed. By laying the electric wire on the upper end of the wire, it is possible to prevent contact with the winding having the different polarity.

According to the fourteenth aspect of the present invention, since the wire retaining portion for retaining the wire at the end of the winding is formed on the outer surface of the insulating piece, the movement of the wire is further restricted. It is possible to further prevent contact with a crossover wire of a different polarity, and to further enhance reliability.

According to the fifteenth aspect of the present invention, the insulating piece is provided with the wire rising portion locking groove for letting the end of the winding into and out of the insulating piece. The starting position can be regulated accurately.

According to the sixteenth aspect of the present invention, since the storage portion for storing the connection portion connecting the ends of the respective windings is provided on the insulating piece, the charging portion can be insulated and fixed by a simple operation. .

According to the seventeenth aspect of the present invention, by securely fixing the electric wire, it is possible to insulate the electric wire from the winding having a different polarity or the electric wire.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a stator of an electric motor according to a first embodiment of the present invention.

FIG. 2 is a view showing an assembling process of a bobbin incorporated in the stator.

FIG. 3 is a view showing an assembly process of the stator.

FIG. 4 is a view showing a bobbin incorporated in a stator of an electric motor according to a second embodiment of the present invention.

FIG. 5 is a view showing a bobbin incorporated in a stator of an electric motor according to a second embodiment of the present invention.

FIG. 6 is a view showing a bobbin incorporated in a stator of an electric motor according to a second embodiment of the present invention.

FIG. 7 is a view showing an assembly process of the stator.

FIG. 8 is a view showing a bobbin incorporated in a stator of an electric motor according to a third embodiment of the present invention.

FIG. 9 is a view showing a bobbin incorporated in a stator of an electric motor according to a fourth embodiment of the present invention.

FIG. 10 is a view showing a bobbin incorporated in a stator of an electric motor according to a fifth embodiment of the present invention.

FIG. 11 is a view showing a bobbin incorporated in a stator of an electric motor according to a sixth embodiment of the present invention.

FIG. 12 is an enlarged view of a main part showing a modification of the bobbin.

FIG. 13 is a top view showing the arrangement of the crossover lines of the bobbin.

FIG. 14 is a view showing a bobbin incorporated in a stator of an electric motor according to a seventh embodiment of the present invention.

FIG. 15 is a perspective view showing an assembly process of the stator.

FIG. 16 is a cross-sectional view of the stator taken along line XX in FIG.

FIG. 17 is a view showing a bobbin incorporated in a stator of an electric motor according to an eighth embodiment of the present invention.

FIG. 18 is a view showing a bobbin incorporated in a stator of an electric motor according to a ninth embodiment of the present invention.

FIG. 19 is an enlarged view of a main part of the bobbin.

FIG. 20 is a diagram showing a stator of the electric motor according to the tenth embodiment of the present invention, wherein (a) is a front view showing a bobbin, (b) is a top view, and (c) is (b). Sectional drawing cut | disconnected by the YY line in FIG.

FIG. 21 is an essential part cross sectional view showing a modification of the bobbin.

FIG. 22 is a view showing a bobbin incorporated in a stator of an electric motor according to an eleventh embodiment of the present invention.

FIG. 23 is a view showing a bobbin incorporated in a stator of an electric motor according to a twelfth embodiment of the present invention.

FIG. 24 is an essential part cross sectional view showing the process of assembling the bobbin;

FIG. 25 is a diagram showing a stator of a motor according to a thirteenth embodiment of the present invention.

FIG. 26 is a diagram showing a bobbin incorporated in a stator of an electric motor according to a fourteenth embodiment of the present invention.

FIG. 27 is a top view showing a stator incorporating the bobbin.

28A and 28B are views showing a stator of the electric motor according to a fifteenth embodiment of the present invention, wherein FIG. 28A is a front view showing a bobbin, and FIG. 28B is a top view showing the stator.

FIGS. 29A and 29B are views showing a stator of a motor according to a sixteenth embodiment of the present invention, wherein FIG. 29A is a front view showing a bobbin, and FIG. 29B is a top view showing the stator.

FIG. 30 is a view showing a bobbin incorporated in a stator of an electric motor according to a seventeenth embodiment of the present invention.

FIG. 31 is a top view showing a stator incorporating the bobbin.

32A and 32B are diagrams showing a stator of an electric motor according to an eighteenth embodiment of the present invention, wherein FIG. 32A is a front view showing a bobbin, and FIG. 32B is a top view showing the stator.

FIG. 33 is a plan view showing an example of a conventional stator.

FIG. 34 is a perspective view showing a conventional stator assembly process.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 20 ... Stator 30 ... Magnetic pole iron core 32 ... Magnetic pole teeth 40, 40A-40F, 70, 70A-70L ... Bobbin 41, 71 ... Fitting part 42, 72 ... Inner flange part 43, 73 ... Outer flange part

Claims (17)

[Claims] 1. A magnetic pole core having a plurality of magnetic pole teeth radially outwardly connected to each other through an annular connecting portion, and a yoke arranged to surround the outside of the magnetic pole core. In a stator of an electric motor in which a winding is wound around an iron core and each of the magnetic pole teeth via an insulating member to form a multi-phase winding, the insulating member has a fitting portion fitted to the magnetic pole teeth. And an inner flange formed inside the fitting portion, and an outer flange formed outside the fitting portion, wherein at least one of the insulating members is the inner flange. And an interphase insulating member integrally formed at a circumferential end of at least one of the outer flanges to separate the magnetic pole windings from each other. 2. The stator according to claim 1, wherein said insulating member is formed of a synthetic resin material having a glass fiber content of not more than a predetermined amount. 3. The insulating member includes a first insulating member provided with the inter-phase insulating member on both sides of the inner flange portion, and a first insulating member disposed adjacent to the first insulating member and the inter-phase insulating member being the first insulating member. A second insulating member provided only on the inner flange portion opposite to the insulating member, and a third insulating member disposed adjacent to the second insulating member and not provided with the interphase insulating member. The stator for an electric motor according to claim 1, wherein the stator is provided. 4. The stator for an electric motor according to claim 1, wherein a part of the interphase insulating member is formed thick. 5. The interphase insulating member according to claim 1, wherein a wire locking groove is provided at an axial end thereof.
The stator for an electric motor according to Claim 1. 6. The stator for an electric motor according to claim 5, wherein a plurality of said wire locking grooves are provided, and their depths along the axial direction are different from each other. 7. A stator for an electric motor in which windings are wound around a plurality of radially installed magnetic poles inside a toroidal yoke of an iron core via an insulating member to form a multiphase winding, The insulating member includes: a fitting portion fitted to the magnetic pole teeth; an inner flange formed inside the fitting portion; and an outer flange formed outside the fitting portion. A stator for an electric motor, wherein an insulating piece bent toward the other flange is integrally formed at an axial end of one of the flange and the outer flange. 8. An insulating piece is provided with an engaging portion on a tip side thereof, and said other flange is provided with a locking portion with which said engaging portion is engaged. The stator for an electric motor according to Claim 1. 9. The stator for an electric motor according to claim 8, wherein said insulating piece is provided on said inner flange portion, and a working handle is provided on a further end side of said engaging portion. . 10. The insulating piece is formed so that the inner flange portion and the outer flange portion are brought close to each other by the engagement portion engaging with the locking portion. Item 10. An electric motor stator according to item 8 or 9. 11. The motor according to claim 8, wherein the bending position of the insulating piece is set so as to press the winding in a state where the insulating piece is bent. stator. 12. The insulating piece includes a folded piece folded on the winding side, and the folded piece presses the winding in a state where the insulating piece is bent. A stator for an electric motor according to claim 8. 13. The stator for an electric motor according to claim 7, wherein an electric wire at an end of the winding is disposed on an outer surface of the insulating piece. 14. The stator for an electric motor according to claim 13, wherein an electric wire locking portion for locking an electric wire on an end side of the winding is formed on an outer surface of the insulating piece. 15. The electric motor according to claim 13, wherein the insulating piece is provided with an electric wire rising groove for letting an end of the winding into and out of the insulating piece. Child. 16. A stator for an electric motor according to claim 13, wherein said insulating piece is provided with a storage portion for storing a connection portion connecting end portions of said windings. . 17. The insulating piece has a wire locking groove disposed at a tip end of the groove and for locking an electric wire at an end of the winding, and the outer flange portion has The stator for an electric motor according to claim 13, further comprising an electric wire penetration groove for allowing the winding to enter and exit the outer flange.