JPH0734635B2 - Permanent magnet type motor manufacturing method - Google Patents

Description

The present invention relates to a method for manufacturing a permanent magnet type motor having a magnet serving as a field magnetic pole on the inner circumference of a yoke.

[Conventional technology]

2. Description of the Related Art Conventionally, magnets (permanent magnets) have been used for field magnetic poles in small motors and the like. Various types of devices for supporting the magnet have been conventionally proposed.

For example, as disclosed in Japanese Patent Publication No. 47-38125,
A cylindrical frame (car body) inserted and fixed in the motor is provided with a pocket portion capable of tightly enclosing a permanent magnet, and a magnet is fitted into the pocket portion, or in Japanese Utility Model Publication No. 51-20407. In addition to forming a window on the peripheral surface of the cylindrical frame, an elastic projection is provided on the edge of the window so that the magnet can be fitted into the window while the elastic projection presses the magnet. There is technology such as holding.

In addition, a non-magnetic cover plate, which is a separate body from the frame, is formed on the circumferential side of the window of a cylindrical frame such as Japanese Utility Model Publication No. 51-20407 to form a pocket part. A method of inserting a magnet into the pocket part has been put into practical use.

[Problems to be Solved by the Invention]

Among these conventional techniques, the one in which the magnet is fitted into the window portion of the cylindrical frame body may cause the following problems if the inner periphery of the window portion is exposed. That is, if the magnet is used as a stator magnetic pole, if the magnet should be cracked due to mechanical shock or vibration, the debris will enter the minute gear gap between the magnet and the rotor, and in the worst case, This causes the rotor to lock.

Therefore, it is desired that the window portion for storing the magnet covers the inner peripheral surface thereof, but the conventional covering method has the following points to be improved.

That is, in the case of covering the window portion, conventionally, as described above, a cover plate which is separate from the cylindrical frame body is incorporated in the inner periphery of the window portion, or the cylindrical frame body is provided with a magnet storage pocket such as Japanese Patent Publication No. 47-38125. The part is integrally formed with the frame. However, of these, the former method incorporates a non-magnetic cover plate into a resin-molded cylindrical frame body, and then incorporates magnets, and while maintaining this state, these magnet assemblies are attached to the motor case. Since it is inserted, the number of man-hours for assembling the motor increases, which is a factor that hinders improvement of the assembling property.

In the latter case, when the magnet storage pocket including the cover plate is integrally formed with the cylindrical frame body, the cover plate and the cylindrical frame body are usually formed of synthetic resin. In this case, when it should be applied to a small motor or the like, it is usually necessary to secure a gear gap of 1 mm or less between the inner circumference of the magnet and the outer circumference of the rotor. Therefore, the thickness of the part that covers the inner circumference of the magnet is usually
It is necessary to make it as thin as 0.2 to 0.5 mm. However, in this conventional technique, the cover plate is made of a synthetic resin together with the cylindrical frame body, and since the cover plate is located on the outer circumference of the rotor that generates the most heat in the motor, heat resistance is ensured. In order to do so, it is necessary to add a reinforcing material (for example, glass fiber) to the synthetic resin. Then, the addition of the reinforcing material tends to reduce the flow of molten metal at the time of molding the cylindrical frame body, and as a result, it tends to be difficult to mold the cover plate portion with resin to be thin.

The present invention has been made in view of the above points, and an object of the present invention is to reliably prevent the fragments from falling off even when the magnet is cracked, and further to improve the manufacturing process (manufacturing work) of this kind of permanent magnet motor. Even if a cylindrical cover is provided as a means for preventing the magnet from coming off in a rationalized manner, it is possible to easily secure a minute gear gap between the magnet and the rotor, and to guarantee the heat resistance of the magnet cover. It is to provide a manufacturing method.

[Means for Solving the Problems]

 The above object is achieved as follows.

Hereinafter, in order to facilitate understanding of the contents of the present invention,
Description will be given with reference to the giving of the embodiments of FIGS. 2, 2, 4, 9 and 10.

A first aspect of the present invention is a method of manufacturing a permanent magnet type motor having a magnet 13 that serves as a field magnetic pole on the inner circumference of a yoke 10, wherein a plurality of magnets for inserting the magnet 13 are provided as preliminary steps required for assembly of motor manufacturing. Cylindrical frame 2 with window 3
Is molded with a synthetic resin, and this molding is performed by integrally forming a cylindrical net-shaped non-magnetic metal member 4 on the inner periphery of the cylindrical frame 2 so as to cover the inside of the window 3. The partition frame resin portion 2a for partitioning the window portion 3 of the cylindrical frame body 2 is formed on the outer periphery of the non-magnetic metal member 4, while the positioning groove 5 is provided on the outer periphery of the partition frame resin portion 2a, and A part 2-2 of the frame resin portion 2a is made to flow through the mesh of the non-magnetic metal member 4 to the inner periphery thereof to allow the non-magnetic metal member 4 to flow.
Of the non-magnetic metal member 4 is completed by molding so as to form a curved surface that is continuous with the inner periphery of, and the molded product is molded after the preliminary step. Cylindrical frame 2
The magnet 13 is fitted into the window portion 3 of the above, and the magnet 13, the cylindrical frame body 2, and the non-magnetic metal member 4 are engaged with the yoke 10, and the positioning groove 5 is engaged with the positioning protrusion 14 provided on the yoke 10 side. The permanent magnet type motor is manufactured through an assembling process in which the permanent magnet motor is simultaneously inserted.

A second aspect of the present invention is a method for manufacturing a permanent magnet type motor having a magnet 13 that serves as a field magnetic pole on the inner circumference of a yoke 10, wherein a plurality of magnets 13 for fitting the magnet 13 are inserted as a preliminary step required for assembling the motor. Cylindrical frame 2 with window 3
Is molded with a synthetic resin, and this molding is performed by integrally forming a cylindrical non-magnetic metal member 4-2 on the inner circumference of the cylindrical frame body 2 so as to cover the inside of the window 3. This non-magnetic metal member 4-2 is set in a mold by rolling a single metal plate and securing a gap 41 at both ends thereof.
While forming a partition frame resin portion 2a for partitioning the window portion 3 of the cylindrical frame body 2 on the outer periphery of the non-magnetic metal member 4-2, a positioning groove 5 is provided on the outer periphery of the partition frame resin portion 2a, and A part 2-2 of the partition frame resin portion 2a is made to flow into the inner circumference of the non-magnetic metal member 4-2 through the gap 41 so as to form a curved surface continuous with the inner circumference of the non-magnetic metal member 4-2. By molding, a molded product in which the non-magnetic metal member 4-2 is partially embedded in the cylindrical frame body 2 is completed, and after the preliminary step, the molded cylindrical frame body 2 is formed.
The magnet 13 is fitted in the window portion 3 of the yoke 10, and the magnet 13, the cylindrical frame body 2, and the nonmagnetic metal member 4-2 are connected to the yoke 10.
Positioning protrusion having the positioning groove 5 on the yoke 10 side
It is characterized in that a permanent magnet motor is manufactured through an assembling process in which 14 are engaged and simultaneously inserted.

A third aspect of the present invention is a method for manufacturing a permanent magnet type motor including a magnet 13 that serves as a magnetic field pole on the inner circumference of the yoke 10. A plurality of magnets for inserting the magnet 13 are provided as a preliminary step required for assembling the motor. Cylindrical frame 2 with window 3
Is molded with a synthetic resin, and this molding is performed by integrally forming a cylindrical non-magnetic metal member 4-4 on the inner periphery of the cylindrical frame body 2 so as to cover the inside of the window 3. The non-magnetic metal member 4-4 is composed of half-divided elements 42, 43, and is set in a mold with a gap 44 secured between the divided elements 42, 43. The partition frame resin portion 2a for partitioning the window portion 3 of the body 2 is connected to the non-magnetic metal member 4-4.
While forming on the outer periphery of the partition frame resin portion 2a, a positioning groove 5 is provided on the outer periphery of the partition frame resin portion 2a, and a part 2-2 of the partition frame resin portion 2a is formed.
By flowing through the gap 44 to the inner circumference of the non-magnetic metal member 4-4 to form a curved surface that is continuous with the inner circumference of the non-magnetic metal member 4-4. To complete a molded product in which the cylindrical frame 2 is partially embedded, and after the preliminary step, the molded cylindrical frame 2
While the magnet 13 is fitted into the window portion 3 of the, the magnet 13, the cylindrical frame body 2 and the non-magnetic metal member 4-4 are engaged with the positioning projections 14 provided on the yoke 10 side with the positioning groove 5. It is characterized in that a permanent magnet type motor is manufactured through an assembling process in which the yoke 10 is simultaneously inserted.

[Action]

In the permanent magnet type motor manufactured through the above steps, the cylindrical non-magnetic metal member 4 (or 4-2, 4-4) covering the inner circumference of the magnet fitting window part 3 is partially cylindrical frame. Since it is integrated with the cylindrical frame body 2 by being embedded in the resin portion (partition frame) 2a of the body 2, the non-magnetic metal member 4 (or 4-2, 4-4) is attached to the cylindrical frame body 2. Can be firmly fixed.

Therefore, even if the magnet 13 is damaged, the non-magnetic metal member 4 (or 4-2, 4-4) surely covers the inner circumference of the window 3 with sufficient mechanical strength. Reliably prevent debris from falling off.

In the manufacturing process until the stator components are assembled into the yoke 10, the non-magnetic metal member 4 (or 4-2, 4-4) is set in the molding die when the cylindrical frame body 2 is molded. Preliminary process of integrating with the cylindrical frame 2 and magnet
Since only the step of fitting 13 into the window portion 3 and the assembly step of simultaneously inserting the magnet 13, the cylindrical frame body 2, and the non-magnetic metal member 4 (or 4-2, 4-4) into the yoke 10 are required, As described above, the troublesome work of assembling the non-magnetic metal member (cover plate) after forming the cylindrical frame body is not required, and accordingly, the man-hours for assembling the parts can be reduced and the manufacturing work can be rationalized. Further, in the present invention, the non-magnetic metal member 4 (or 4-2, 4-4) is partially embedded to strengthen the coupling with the frame body 2 at the time of molding the cylindrical frame body 2. Since it is performed by using the mesh of, the gap 41 between both ends of the rolled metal plate, or the gap 44 of the split elements 42, 43 in a half-divided shape, it is special for resin embedding. There is an advantage that processing such as drilling the resin flow hole in the window cover for the non-magnetic metal magnet is unnecessary.

Furthermore, since the member that covers the inside of the magnet window is a non-magnetic metal member, heat resistance can be achieved even if it is thin, so when covering the magnet for the stator side field pole that is affected by heat from the rotor side. Even at that time, it is easy to secure a small gear gap between the magnet and the rotor.

〔Example〕

 An embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a perspective view showing a magnet supporting device of a permanent magnet type motor according to a first embodiment of the present invention, and FIG.
-I line sectional view, FIG. 3 is a vertical sectional view of the permanent magnet type motor according to the first embodiment, and FIG. 4 is a II-II line sectional view of FIG.

In FIGS. 1 and 2, 1 is a magnet support device,
The parts include a cylindrical frame body 2 and a cylindrical net material (nonmagnetic metal member) 4.

The cylindrical frame body 2 is made of synthetic resin, and has two window portions 3 for fitting magnets formed on its circumferential surface. The outer diameter of the cylindrical frame body 2 is formed so as to fit in the inner diameter of the yoke 10 of the motor shown in FIG. 3, and the inner circumference of the window portion 3 is covered with the net material 4 to form the window portion. 3 becomes a pocket.

The net material 4 is formed by forming a fibrous heat-resistant magnetic metal member so as to form a fine mesh, and its outer diameter is set to be substantially equal to the inner diameter of the cylindrical frame 2. Further, in the net material 4, the portion that covers the shape of the window portion 3 is
It has an arc shape which is substantially the same as or slightly larger than the inner circumference of the magnet (field magnetic pole) 13 fitted in.

In the window portion 3 of the magnet supporting device 1 as described above,
The stator of the motor is configured by fitting 13 and assembling this into the yoke 10. The manufacturing process thereof will be described here.

As a preliminary step required for assembling a motor, the cylindrical frame 2 with the window 3 is molded with synthetic resin. This molding is performed by setting the net material 4 in a molding die (not shown), and after the molding, the net material 4 covers the inner periphery of the window 3 on the inner circumference of the cylindrical frame body 2. Two
It is arranged integrally with.

In addition, in this molding, a partition frame resin portion (hereinafter, referred to as a resin portion) 2a for partitioning the window portion 3 of the cylindrical frame body 2 is formed on the outer periphery of the net material 4 and positioned on the outer periphery of the resin portion 2a. The groove 5 is provided. In addition, a part 2-2 of the resin portion 2a is made to flow through the mesh (the mesh portion at the position indicated by the reference numeral ') to the inner circumference of the net material 4 to form a curved surface continuous with the inner circumference of the net material 4. Thus, the molded product (magnet support device) 1 in which the net material 4 is partially embedded in the cylindrical frame body 2 is completed. A part of the net material 4 is embedded in the resin portion 2a as described above, and both ends of the net material are attached to the inner circumferences of both axial ends of the cylindrical frame body 2. Of the resin portion 2a, the portion on the outer peripheral side of the net material 4 is indicated by reference numeral 2-1 and the portion on the inner peripheral side is indicated by reference numeral 2-2. Also, the positioning groove 5
Is linearly formed over both ends 2b, 2c of the frame 2 and the outer periphery of the resin portion 2a, and has a total of two threads.

Next, assembling of the magnet supporting device 1 having the above configuration into the motor will be described with reference to FIGS.

In FIGS. 3 and 4, 10 is a yoke serving as a motor housing, 11 is an end bracket covering one end opening of the yoke 10, 12 is a rotor, 13 is a magnet, and 14 is a part of the yoke 10 inside. Positioning protrusion formed by extrusion, protrusion 14
Are set to such dimensions that they can be fitted into the groove 5 provided on the cylindrical frame 2 in a conforming manner. Two pieces are arranged at 180 ° intervals corresponding to the groove 5, and the yoke 10 It is arranged near one end of the opening.

The magnet 13 of this embodiment constitutes a field magnetic pole on the side of the stator, and is fitted into the pocket (window portion) 3 of the cylindrical frame body 2 and is inserted into the yoke 10 together with the frame body 2 from one end opening thereof. When the magnet support device 1 (cylindrical frame body) is inserted, the groove 5 and the protrusion 14 are aligned at the initial stage of the insertion.
2, the net material 4, and the magnet 13) are simultaneously inserted into the yoke 10. As a result, the entire magnet supporting device 1 is circumferentially positioned with respect to the yoke 10 at the initial stage of insertion.

When the magnet support device 1 is completely inserted into the yoke 10, one end face in the axial direction of the cylindrical frame body 2 abuts on one end face side of the yoke 10, and in this state, the end bracket 11 is attached to the yoke 10.
If the end of the end bracket 11 is fitted into the one end opening of the yoke 10, the end of the end bracket 11 is abutted against one end of the cylindrical frame body 2 by attaching it to the one end opening of the yoke via a screw. The cylindrical frame 2 and thus the magnet supporting device 1 are axially fixed in the motor.

That is, the total length of the cylindrical frame body 2 is the inner end of the yoke 1.
The length is set so as to match the length from 10b to one end of the fitting portion 11a of the end bracket 11, and the ends 10b and 11a regulate the axial direction of the cylindrical frame body 2. The outer circumference of the magnet 13 is pressed against the inner circumference 10a of the yoke by the net material 4.

Here, the gear gap between the inner circumference of the net material 4 and the rotor 12 is
Normally, the thickness is set to 0.2 to 0.5 mm, and the thickness of the net material 4 is selected so as not to fill this gear.

Therefore, according to this embodiment, the following effects can be obtained.

(1) Since the net material 4 forming a part of the pocket 3 for storing the magnet is integrally fixed to the frame body 2 integrally with the cylindrical frame body 2, even if the magnet 13 is damaged, It is possible to surely prevent the motor from coming off, and to improve the reliability of this type of motor.

(2) Since the cylindrical frame body 2 and the net material 4 can be integrated at the time of resin molding of the cylindrical frame body 2, when the net material 4 is assembled after molding both of these members as in the conventional case. The troublesome assembling work can be omitted, the manufacturing work of the entire magnet supporting device 1 can be rationalized, and the manufacturing cost can be reduced. In particular, in this embodiment, the net material 4 is partially embedded for strengthening the bond with the frame 2 when the cylindrical frame 2 is molded, but since this embedding is performed by molding using the net mesh, resin is used. There is an advantage that a special resin flow hole for embedding is not required to be drilled in the nonmagnetic metal window cover for the magnet.

(3) The net material 4 itself is a non-magnetic metal member (wire material)
Since it can be made thin and has heat resistance and mechanical strength, even if the net material 4 is interposed between the magnet 13 and the rotor 12, a sufficient small gap between the magnet 13 and the rotor 12 should be secured. You can

(4) When the magnet supporting device 1 is incorporated in the motor 10, the cylindrical frame 2 is inserted into the yoke 10 at an initial stage.
Of the support device 1 by engaging the groove 5 of the
Is positioned and fixed in the circumferential direction, and if the cylindrical frame 2 is pushed into the yoke 10 and the end bracket 11 is adhered, the axial fixing is automatically performed, so that the motor itself can be easily assembled. Can be realized.

FIG. 5 is a perspective view showing a magnet supporting device 1 used in the second embodiment of the present invention, and FIG. 6 is a sectional view taken along line III-III in FIG. In the figure, the same reference numerals as those in the first embodiment denote the same or common elements.

This embodiment has almost the same configuration as that of the first embodiment,
The difference is that the reinforcing ribs 6 are formed in the central axis direction of the inner circumference of each window portion (pocket portion) 3. This reinforcing rib 6
This has the effect of reinforcing the metal net material 4. Further, as shown in FIG. 7, the magnet 13 fitted into the pocket portion 3 of this embodiment has a groove 7 formed on the inner periphery thereof so that the rib 6 can be fitted therein. It is designed so that it will not interfere with the insertion.

Next, a third embodiment of the present invention will be described with reference to FIGS.

FIG. 8 is a perspective view of the non-magnetic metal member 4-2 used in the third embodiment, and FIG. 9 is a sectional view of the magnet supporting device. In the drawing, the same reference numerals as those in the first and second embodiments indicate the same or common elements.

The difference between this embodiment and the first and second embodiments is the configuration of the non-magnetic metal member that covers the inside of the window 3.

In this embodiment, a single metal plate is rolled to form the non-magnetic metal member 4-2 which replaces the net material 4 of the first embodiment, but both ends in the circumferential direction are bent (folded back) and in between. A point is that a gap 41 is provided, and the resin flow portion 4 ′ at the time of molding is constituted by this gap 41.

That is, in the step of molding the cylindrical frame body 2 with synthetic resin, the cylindrical non-magnetic metal member 4-2 is integrally formed on the inner periphery of the cylindrical frame body 2 so as to cover the inside of the window 3. However, the non-magnetic metal member 4-2 is set in a mold in such a manner that one metal plate is rolled and a gap 41 is secured at both ends thereof.

Then, while molding the resin portion 2a for partitioning the window portion 3 of the cylindrical frame body 2 on the outer periphery of the non-magnetic metal member 4-2, a part 2-2 of the resin portion 2a is formed of the non-magnetic metal member 4-2. The non-magnetic metal member 4-2 is partially embedded in the cylindrical frame body 2 by flowing it through the gap 41 to the inner periphery and molding it so as to form a curved surface that is continuous with the inner periphery of the non-magnetic metal member 4-2. The elliptical molded product (magnet support device) 1 is completed.

Subsequent assembling of the magnet supporting device 1 into the yoke is similar to that of the first embodiment, and therefore the description thereof is omitted here.

Also in this embodiment, the same effects as in the first embodiment can be obtained. In particular, the non-magnetic metal member 4-2 is partially embedded in the frame body 2 at the time of molding, but since this embedding is performed by utilizing the gaps 41 at both ends of the metal plate, a special resin flow hole for resin embedding is used. There is an advantage that a troublesome processing such as perforating a metal member is unnecessary.

Next, a fourth embodiment of the present invention will be described with reference to FIG.

FIG. 10 is a sectional view of the magnet supporting device 1 used in the fourth embodiment.

The difference between this embodiment and each of the above-described embodiments is that, as a member for covering the inside of the magnet fitting window portion 3, elements 42, 43 obtained by dividing a cylindrical non-magnetic metal member 4-4 in half are used. There is a point.

That is, in the step of molding the cylindrical frame body 2 with the synthetic resin, the cylindrical non-magnetic metal member 4-4 is integrally formed on the inner circumference of the cylindrical frame body 2 so as to cover the inside of the window 3. However, the dividing elements 42 and 43, which become the non-magnetic metal member 4-4, are set in a mold with a gap 44 secured therebetween, and the resin portion 2a for partitioning the window portion 3 of the cylindrical frame 2 is made non-conductive. Magnetic metal member 4
-4 while molding on the outer circumference of the resin portion 2a, the part 2-2 of the resin portion 2a is caused to flow into the inner circumference of the non-magnetic metal member 4-4 through the gap 44 and is connected to the inner circumference of the non-magnetic metal member 4-4. By forming the non-magnetic metal member 4-4 into the cylindrical frame body 2, a molded product (magnet support device) 1 is completed by forming the non-magnetic metal member 4-4.

Subsequent assembling of the magnet supporting device 1 into the yoke is similar to that of the first embodiment, and therefore the description thereof is omitted here.

Also in this embodiment, the same effects as in the first embodiment can be obtained. In particular, the non-magnetic metal member 4-4 is partially embedded in the frame body 2 at the time of molding, but this embedding is performed by using the gap 44 between the dividing elements 42, 43, so that it is special for resin embedding. There is an advantage that the troublesome processing of drilling the resin flow hole in the metal member is unnecessary.

〔The invention's effect〕

As described above, according to the present invention, even when the magnet is cracked, the fragments are surely prevented from falling off, and
Even if the manufacturing process (manufacturing work) of a permanent magnet type motor having this type of magnet disengagement means is rationalized and a cylindrical cover is provided as the magnet disengagement prevention means, a small gear gap between the magnet and the rotor is provided. It is possible to provide a highly reliable permanent magnet type motor that can be easily secured and can guarantee the heat resistance of the magnet cover.

[Brief description of drawings]

FIG. 1 is a perspective view showing a magnet supporting device used for a permanent magnet type motor according to a first embodiment of the present invention, and FIG.
Fig. 3 is a sectional view taken along the line I-I of Fig. 3, Fig. 3 is a longitudinal sectional view showing a finished product of the motor of the first embodiment, Fig. 4 is a sectional view taken along the line II-II of Fig. 3, and Fig. 5 shows the present invention. FIG. 6 is a perspective view showing a magnet supporting device used in the permanent magnet type motor according to the second embodiment, FIG. 6 is a sectional view taken along line III-III of FIG. 5, and FIG. 7 is a perspective view of a magnet used in the second embodiment. FIG. 8 is a perspective view of a non-magnetic metal member used in the third embodiment of the present invention, FIG. 9 is a sectional view showing a magnet supporting device of a permanent magnet type motor according to the third embodiment, and FIG. It is sectional drawing which shows the magnet support device of the permanent magnet type motor which concerns on 4th Example of this invention. 1 ... Magnet support device (molded product), 2 ...
Cylindrical frame, 2a ... partition frame resin part, 2-1 and 2-2 ... part of frame (resin), 3 ... window part, 4 ... non-magnetic metal member (cylindrical net material) , 4-2, 4-4 ... Non-magnetic metal member (cylindrical plate material), 4 '... Resin flow part, 5 ... Positioning groove, 6 ... Reinforcing rib, 10 ... Motor housing (yoke), 13 …… Magnet, 14 …… Positioning protrusion, 41,44
…… Gap (resin flow part), 42,43 …… Split non-magnetic metal member.

Claims (3)

[Claims] 1. A method of manufacturing a permanent magnet type motor having a magnet (13) as a field magnetic pole on an inner circumference of a yoke (10), wherein the magnet (13) is fitted as a preliminary step required for assembly of motor manufacturing. A cylindrical frame body (2) with a plurality of window portions (3) for inserting is molded with a synthetic resin, and this molding is performed by forming the window portion (3) on the inner circumference of the cylindrical frame body (2). The cylindrical net-shaped non-magnetic metal member (4) is integrally formed so as to cover the inner side, and the partition frame resin portion (2a) for partitioning the window portion (3) of the cylindrical frame body (2) is made of the non-metallic material. While molding on the outer periphery of the magnetic metal member (4), a positioning groove (5) is provided on the outer periphery of the partition frame resin part (2a), and a part (2-2) of the partition frame resin part (2a) To the inner circumference of the non-magnetic metal member (4) by flowing through the mesh of the non-magnetic metal member (4). By molding so as to form a curved surface that is continuous with the inner circumference, a molded product in which the non-magnetic metal member (4) is partially embedded in the cylindrical frame body (2) is completed, and after the preliminary step, The magnet (13) is fitted into the window portion (3) of the molded cylindrical frame body (2), and the magnet (13), the cylindrical frame body (2) and the non-magnetic metal member (4) are attached. Positioning groove (5) on the yoke (10)
A method of manufacturing a permanent magnet type motor, characterized in that a permanent magnet type motor is manufactured through an assembling step of simultaneously inserting while engaging with a positioning protrusion (14) provided on the yoke (10) side. 2. A method for manufacturing a permanent magnet type motor having a magnet (13) as a field magnetic pole on the inner circumference of a yoke (10), wherein the magnet (13) is fitted as a preliminary step required for assembly of motor manufacturing. A cylindrical frame body (2) with a plurality of window portions (3) for inserting is molded with a synthetic resin, and this molding is performed by forming the window portion (3) on the inner circumference of the cylindrical frame body (2). A cylindrical non-magnetic metal member (4
-2) is performed integrally, and the non-magnetic metal member (4-2) is set in a mold in a form in which a single metal plate is rolled and a gap (41) is secured at both ends thereof. While molding the partition frame resin portion (2a) for partitioning the window portion (3) of the cylindrical frame body (2) on the outer periphery of the non-magnetic metal member (4-2), the partition frame resin portion (2a) A positioning groove (5) is provided on the outer circumference, and a part (2-2) of the partition frame resin portion (2a) is caused to flow to the inner circumference of the non-magnetic metal member (4-2) through the gap (41). And a shape in which the non-magnetic metal member (4-2) is partially embedded in the cylindrical frame body (2) by molding the non-magnetic metal member (4-2) into a curved surface that is continuous with the inner circumference of the non-magnetic metal member (4-2). Of the magnet (13) in the window (3) of the molded cylindrical frame body (2) after the preliminary step is completed. The magnet (13), the cylindrical frame (2) and the non-magnetic metal member (4-2) are fitted in the yoke (10) and the positioning groove (5) is provided on the yoke (10) side for positioning. A method for producing a permanent magnet type motor, characterized by producing a permanent magnet type motor through an assembly process in which the protrusions (14) are simultaneously inserted while being engaged. 3. A method of manufacturing a permanent magnet type motor having a magnet (13) as a magnetic field pole on the inner circumference of a yoke (10), wherein the magnet (13) is fitted as a preliminary step required for assembly of motor manufacturing. A cylindrical frame body (2) with a plurality of window portions (3) for inserting is molded with a synthetic resin, and this molding is performed by forming the window portion (3) on the inner circumference of the cylindrical frame body (2). A cylindrical non-magnetic metal member (4
-4) is integrally performed, and the non-magnetic metal member (4-4) is composed of half-divided elements (42, 43) to form a gap (42, 43) between the divided elements (42, 43). 44) is secured to the mold and the partition frame resin portion (2a) for partitioning the window portion (3) of the cylindrical frame body (2) is attached to the outer periphery of the non-magnetic metal member (4-4). A molding groove (5) is provided on the outer periphery of the partition frame resin portion (2a) while being molded on, and a part (2-2) of the partition frame resin portion (2a) is provided on the non-magnetic metal member (4). -4) is made to flow through the gap (44) to the inner periphery of the non-magnetic metal member (4-4) to form a curved surface that is continuous with the inner periphery of the non-magnetic metal member (4-4).
4) to complete a molded product in which the cylindrical frame body (2) is partially embedded, and after the preliminary step, the magnet is provided in the window portion (3) of the molded cylindrical frame body (2). (13) is fitted and the magnet (13), the cylindrical frame (2) and the non-magnetic metal member (4-4) are provided with the positioning groove (5) on the yoke (10) side. A method for manufacturing a permanent magnet type motor, characterized in that a permanent magnet type motor is manufactured through an assembly step of simultaneously inserting the yoke (10) while engaging the same with (14).