JP7053868B2 - Outer rotor type rotary electric machine and ceiling fan - Google Patents

Description

The present invention relates to an outer rotor type rotary electric machine and a ceiling fan having a rotor on the outer peripheral side of the stator.

Rotating machines such as motors and generators are configured with shafts, bearings, stators, rotors and shells. Further, among the rotary electric machines, the outer rotor type rotary electric machine is provided with a stator inside the outer shell and a rotor on the outer peripheral side of the stator. Outer rotor type rotary electric machines are widely used in applications such as ceiling fans.

Such an outer rotor type rotary electric machine is provided with an electric / electronic component that assists the drive. When the electric / electronic parts are attached to the outside of the outer shell of the rotary electric machine, the outer shell for the electric / electronic parts is required separately from the outer shell of the rotary electric machine, the number of parts of the outer shell increases, and the assembly work becomes troublesome.

Patent Document 1 discloses an electric machine in which the internal space of the outer shell of the rotary electric machine is expanded in the direction of the central axis of the rotor, and the electric and electronic parts are built in the expanded internal space. In the electric motor disclosed in Patent Document 1, since the electric and electronic parts are housed inside the outer shell of the rotary electric machine, the outer shell for the electric and electronic parts is not required, and the number of parts of the outer shell is caused by the storage of the electric and electronic parts. Does not increase.

Japanese Patent No. 4354193

However, in the electric motor disclosed in Patent Document 1, since the electric and electronic parts are built in the outer shell of the electric motor, it is necessary to prevent the electric and electronic parts from coming into contact with a rotating object such as a rotor. Therefore, the electric motor disclosed in Patent Document 1 needs to provide a large space for accommodating electric and electronic parts inside the outer shell of the rotary electric machine, and has a problem that the rotary electric machine becomes large in size.

The present invention has been made in view of the above, and an object of the present invention is to obtain an outer rotor type rotary electric machine that can be miniaturized without increasing the number of outer parts due to the storage of electric and electronic parts. do.

In order to solve the above-mentioned problems and achieve the object, the outer rotor type rotary electric machine according to the present invention has a rotor having a cylindrical shape and is provided inside the rotor and extends along the central axis of the rotor. A stator that has a shaft, an outer shell that houses the rotor inside, and a stator center hole that has an inner diameter larger than the outer diameter of the shaft are formed coaxially with the central axis of the rotor and placed inside the rotor. Equipped with an iron core. Further, the outer rotor type rotary electric machine includes a disk component fixed coaxially with the central axis of the rotor in the stator center hole, and an electric / electronic component held by the disk component. The disk parts are formed in a disk center hole formed coaxially with the center axis of the rotor, a first support portion extending along the inner circumference of the disk center hole, and a region adjacent to the outer periphery on one surface of the disk part. A second support portion that projects vertically from one surface and extends along the outer circumference of the disk component is provided. The disc component has a plate-like cross section with a uniform thickness. By arranging the two disk components so that the second support portions face each other, the stator center hole in which the electrical and electronic components are held is closed by the two disk components.

According to the present invention, it is possible to obtain an outer rotor type rotary electric machine that can be miniaturized without increasing the number of outer parts due to the storage of electric and electronic parts.

Perspective view of the outer rotor type rotary electric machine according to the first embodiment of the present invention. It is sectional drawing of the outer rotor type rotary electric machine which concerns on Embodiment 1 of this invention, and is the vertical sectional view along line segment II-II in FIG. A perspective view showing the internal structure of the outer rotor type rotary electric machine according to the first embodiment of the present invention. A perspective view showing a state in which the shaft, the stator core, and the first disk component in the outer rotor type rotary electric machine according to the first embodiment of the present invention are assembled. Top view of the stator core of the outer rotor type rotary electric machine according to the first embodiment of the present invention. A perspective view showing a state in which the shaft of the outer rotor type rotary electric machine according to the first embodiment of the present invention and the first disk component are assembled. Perspective view of the first disk component of the outer rotor type rotary electric machine according to the first embodiment of the present invention. A perspective view showing a state in which an electric / electronic component that assists in driving a rotary electric machine is mounted on one surface of the first disk component shown in FIG. A cross-sectional view showing a state in which the stator center hole of the stator core shown in FIG. 8 is fully closed. Side view showing the ceiling fan which concerns on Embodiment 2 of this invention

Hereinafter, the outer rotor type rotary electric machine and the ceiling fan according to the embodiment of the present invention will be described in detail with reference to the drawings. The present invention is not limited to this embodiment.

Embodiment 1.
FIG. 1 is a perspective view of an outer rotor type rotary electric machine 1 according to a first embodiment of the present invention. FIG. 2 is a cross-sectional view of the outer rotor type rotary electric machine 1 according to the first embodiment of the present invention, and is a vertical cross-sectional view taken along the line segments II-II in FIG. FIG. 3 is a perspective view showing the internal structure of the outer rotor type rotary electric machine 1 according to the first embodiment of the present invention. FIG. 4 is a perspective view showing a state in which the shaft 3, the stator core 4, and the first disk component 5 in the outer rotor type rotary electric machine 1 according to the first embodiment of the present invention are assembled. FIG. 5 is a top view of the stator core 4 of the outer rotor type rotary electric machine 1 according to the first embodiment of the present invention. FIG. 6 is a perspective view showing a state in which the shaft 3 and the first disk component 5 of the outer rotor type rotary electric machine 1 according to the first embodiment of the present invention are assembled. FIG. 7 is a perspective view of the first disk component 5 of the outer rotor type rotary electric machine 1 according to the first embodiment of the present invention.

The outer rotor type rotary electric machine 1 according to the first embodiment is a rotary electric machine in which the rotor 7 rotates on the outer peripheral side of the stator core 4. Hereinafter, the outer rotor type rotary electric machine 1 is referred to as a rotary electric machine 1. The rotary electric machine 1 includes a first outer frame 2a and a second outer frame 2b that constitute the outer shell of the rotary electric machine 1. Further, the rotary electric machine 1 has a shaft 3, a stator core 4, a first disk component 5, a first bearing 6a, and a second bearing inside an outer shell composed of a first outer frame 2a and a second outer frame 2b. The 6b and the rotor 7 are provided coaxially with the rotation axis of the rotary electric machine 1. That is, the central shafts of the first outer frame 2a, the second outer frame 2b, a part of the shaft 3, the stator core 4, the first disk component 5, the first bearing 6a, the second bearing 6b, and the rotor 7 are , It is coaxial with the rotation axis of the rotary electric machine 1. The outer shell houses the rotary electric machine 1 including the rotor 7 inside.

The first outer frame 2a and the second outer frame 2b have a cylindrical shape with one bottom surface open. The first outer frame 2a and the second outer frame 2b are combined so that the opened surfaces of the first outer frame 2a and the second outer frame 2b face each other to form the outer shell of the rotary electric machine 1. The first outer frame 2a is provided with a first housing 2c capable of holding the first bearing 6a on the bottom surface portion of the cylindrical shape, and a first cylindrical portion 2e capable of holding the rotor 7 on the outer peripheral portion of the rotary electric machine 1. It has a space that can cover the components. The second outer frame 2b has a second housing 2d capable of holding the second bearing 6b on the bottom surface of the cylindrical shape, and a second cylindrical portion 2f capable of holding the rotor 7 on the outer peripheral portion of the rotary electric machine 1. It has a space that can cover the components. The first outer frame 2a and the second outer frame 2b are rotatably attached to the shaft 3 via the first bearing 6a and the second bearing 6b.

The first bearing 6a and the second bearing 6b are arranged at positions on both sides of the first disk component 5 in the axial direction. The first bearing 6a is housed in the first housing 2c and is located between the first outer frame 2a and the shaft 3, and the first outer frame 2a and the shaft 3 are provided so that the rotary electric machine 1 can be smoothly driven. keeping. The second bearing 6b is housed in the second housing 2d and is located between the second outer frame 2b and the shaft 3, and the second outer frame 2b and the shaft 3 are provided so that the rotary electric machine 1 can be smoothly driven. keeping.

The shaft 3 is a hollow shaft fixed to the first disk component 5 and extending along the central axis of the rotor 7 . The shaft 3 has a strength capable of holding the rotary electric machine 1 by withstanding the weight of the rotary electric machine 1, torque and twisting due to the rotational movement when the rotary electric machine 1 is driven, and the like. One end 3a side of the shaft 3 projects to the outside of the first outer frame 2a. One end 3a side of the shaft 3 protruding to the outside of the first outer frame 2a is coupled to a product such as a ceiling fan (not shown).

The rotor 7 has a cylindrical shape, and is arranged around the shaft 3 on the outer peripheral side of the stator core 4, that is, on the outer side of the stator core 4 via a gap with the outer circumference of the stator core 4. The rotor 7 has an inner diameter slightly larger than the outer diameter of the stator core 4, and has an inner diameter of the first cylindrical portion 2e of the first outer frame 2a and a second cylindrical portion 2f of the second outer frame 2b. It has an outer diameter that is the same as the inner diameter of. The inner diameter of the first cylindrical portion 2e of the first outer frame 2a, the inner diameter of the second cylindrical portion 2f of the second outer frame 2b, and the outer diameter of the rotor 7 are in a tight fitting or intermediate fitting relationship. It can be coupled with high accuracy and easily by press fitting or caulking.

Therefore, the rotor 7 is firmly fixed to the first cylindrical portion 2e of the first outer frame 2a and the second cylindrical portion 2f of the second outer frame 2b by press fitting or caulking. As a result, the rotor 7 is rotatably supported by the first bearing 6a and the second bearing 6b together with the first outer frame 2a and the second outer frame 2b.

The stator core 4 has a cylindrical shape, and is configured by laminating a plurality of electrical steel sheets in the axial direction and is arranged inside the rotor 7 coaxially with the central axis of the rotor 7. In the stator core 4, a cylindrical stator center hole 4a for press-fitting and holding the first disk component 5 is formed coaxially with the central axis of the rotor 7. The stator center hole 4a is coaxial with the central axis and the shaft 3 of the stator core 4. The stator center hole 4a has an inner diameter larger than the outer diameter of the shaft 3, and has a volume larger than the volume through which the shaft 3 is inserted in the central portion of the stator core 4. The stator center hole 4a is formed in a portion of the stator core 4 that is electromagnetically unnecessary when forming a magnetic path in the stator core 4 for driving the rotary electric machine 1. Further, the stator center hole 4a is formed in a portion of the stator core 4 where the influence on the magnetic circuit is very small.

On the outer peripheral side of the stator center hole 4a in the stator core 4, a plurality of auxiliary winding slots 4c arranged in a circular shape are provided. Further, on the outer peripheral side of the stator core 4 with respect to the auxiliary winding slots 4c, a plurality of main winding slots 4b distributed and arranged in a circle are provided. A main winding 8a, which is a stator winding, is wound in the main winding slot 4b so that a magnetic path can be formed in the stator core 4. Similarly, the auxiliary winding 8b, which is a stator winding, is wound around the auxiliary winding slot 4c so that a magnetic path can be formed in the stator core 4.

The first disk component 5 has a disk shape, a disk center hole 5a for press-fitting and holding the shaft 3 is formed in the central portion, and the disk is fixed coaxially with the central axis of the rotor 7 in the stator center hole 4a. It is a part. That is, the first disk component 5 has an annular shape. The disk center hole 5a is coaxial with the central axis of the rotor 7, that is, coaxial with the shaft 3, and has the same inner diameter as the outer diameter of the shaft 3.

The first disk component 5 projects vertically from one surface of the first disk component 5 in a region adjacent to the disk center hole 5a on one surface of the first disk component 5, and extends along the inner circumference of the disk center hole 5a. A support portion 5b is provided. Further, the first disk component 5 projects vertically from one surface of the first disk component 5 in a region adjacent to the outer circumference 5d on one surface of the first disk component 5, and extends along the outer circumference of the first disk component 5. A support portion 5c is provided. That is, the first support portion 5b provided on the inner peripheral side of the first disk component 5 and the second support portion 5c provided on the outer peripheral side of the first disk component 5 are in the direction of the central axis of the first disk component 5. It projects in the same direction perpendicular to one surface of the first disk component 5. The first support portion 5b and the second support portion 5c may project in opposite directions in the central axis direction of the first disk component 5.

The first support portion 5b has the same inner diameter dimension as the outer diameter dimension of the shaft 3, and has the same inner diameter dimension as the disk center hole 5a. The second support portion 5c has the same outer diameter dimension as the inner diameter dimension of the stator center hole 4a of the stator core 4, and has the same outer diameter dimension as the first disk component 5.

The inner diameter of the disk center hole 5a and the inner diameter of the first support portion 5b of the first disk component 5 and the outer diameter of the shaft 3 are in a tight fitting or intermediate fitting relationship, and can be quickly and easily coupled by press fitting or caulking. can. That is, the shaft 3 is press-fitted and fixed or caulked to the disk center hole 5a and the first support portion 5b of the first disk component 5.

The diameter of the outer circumference 5d of the first disk component 5 and the inner diameter of the stator center hole 4a of the stator core 4 are in a tight fitting or intermediate fitting relationship, and can be easily and accurately coupled by press fitting or caulking. That is, the first disk component 5 is press-fitted or caulked into the stator center hole 4a of the stator core 4.

In this way, the first support portion 5b and the second support portion 5c of the first disk component 5 are both in a tight-fitting or intermediate-fitting relationship with the object to be coupled, so that high accuracy can be achieved by press-fitting or caulking. Moreover, it is possible to bind to an object that can be easily bound.

In the rotary electric machine 1 configured as described above, the stator center hole 4a coaxial with the shaft 3 is formed in the stator core 4, and the shaft 3 and the stator core 4 are formed by using the first disk component 5. Can be easily combined with. The stator center hole 4a has an inner diameter larger than the outer diameter of the shaft 3, and has a volume larger than the volume through which the shaft 3 is inserted in the central portion of the stator core 4. Therefore, as compared with the case where the shaft 3 is directly inserted and fixed to the central portion of the stator core 4, the electromagnetic steel plate used for the stator core 4 can be reduced, and the weight of the rotary electric machine 1 can be reduced. Can be reduced. As a result, the rotary electric machine 1 can be reduced in weight, the material cost can be reduced, and the workability of the rotary electric machine 1 can be improved.

When the shaft 3 is directly inserted and fixed to the central portion of the stator core 4, the inner diameter of the hole at the center of the stator core 4 for inserting the shaft 3 is larger than the outer diameter of the shaft 3. If this happens, it becomes difficult to fasten the shaft 3 to the stator core 4, so it is necessary to make the inner diameter of the hole at the center of the stator core 4 the same as the outer diameter of the shaft 3.

On the other hand, in the rotary electric machine 1, since the shaft 3 and the stator core 4 are connected by using the first disk component 5, the hole diameter of the stator center hole 4a can be made larger than the outer diameter of the shaft 3. Since a large cavity can be provided in the center of the stator core 4, the number of iron cores used for the stator core 4 can be reduced.

FIG. 8 is a perspective view showing a state in which an electric / electronic component that assists driving the rotary electric machine 1 is mounted on one surface of the first disk component 5 shown in FIG. In FIG. 8, a capacitor 9 and an electronic circuit 10 are mounted as electrical and electronic components on one surface of the first disk component 5. As shown in FIG. 8, by mounting an electric / electronic component on one surface of the first disk component 5, the stator center hole 4a of the stator core 4 is formed, and the shaft 3 and the stator core are formed by using the first disk component 5. It can be effectively used for purposes other than the use of combining with 4. That is, as shown in FIG. 8, by mounting the electric / electronic component on one surface of the first disk component 5, the performance of the rotary electric machine 1 is impaired as compared with the case where the electric / electronic component is arranged outside the rotary electric machine 1. It is possible to save space and improve the design of the rotary electric machine 1 without the need for this.

Further, when the electric / electronic parts are arranged outside the first outer frame 2a and the second outer frame 2b of the rotary electric machine 1, an outer shell for the electric / electronic parts for protecting the electric / electronic parts is required, and the rotary electric machine 1 is required. As the configuration of the rotary electric machine 1 becomes complicated, the size of the rotary electric machine 1 becomes large.

On the other hand, in the rotary electric machine 1, the electric / electronic parts are housed in the stator center hole 4a of the stator core 4, so that the electric / electronic parts form the outer shell of the rotary electric machine 1 with the first outer frame 2a. The structure is covered with the second outer frame 2b. As a result, in the rotary electric machine 1, the first outer frame 2a and the second outer frame 2b also serve as the outer shell of the electric / electronic component that protects the electrical / electronic component, and the outer shell for the electrical / electronic component is unnecessary. , The number of parts can be reduced. Further, since there is no outer shell for electric and electronic parts, and the shapes and sizes of the first outer frame 2a and the second outer frame 2b are not affected by the electric and electronic parts, the shape of the rotary electric machine 1 caused by the electric and electronic parts is the same. Restrictions and upsizing are prevented.

Further, since the electrical and electronic parts are housed in the stator center hole 4a of the stator core 4, they do not come into contact with rotating objects such as the rotor 7 and avoid contact with rotating objects such as the rotor 7. Therefore, it is not necessary to provide a large space inside the outer shell, and the size of the rotary electric machine 1 is not increased , and the designability and workability are not deteriorated.

FIG. 9 is a cross-sectional view showing a state in which the stator center hole 4a of the stator core 4 shown in FIG. 8 is in a fully closed state. In FIG. 9, a second disk component 5e, which is a disk component, is added to the configuration shown in FIG. 8, and the stator center hole 4a of the stator core 4 is shafted by the first disk component 5 and the second disk component 5e. It shows a state in which it is closed from the direction of 3 and is fully closed.

That is, in the stator center hole 4a of the stator core 4, one surface 4d side of the stator core 4 is closed by the first disk component 5, and the other surface 4e side of the stator core 4 is closed by the second disk component 5e. It is missing. As a result, the stator center hole 4a of the stator core 4 is closed from both sides in the central axial direction of the stator center hole 4a by the first disk component 5 and the second disk component 5e, and is fully closed. ing. The second disk component 5e uses the same components as the first disk component 5, and is press-fitted and fixed or caulked to the stator center hole 4a of the stator core 4 in the same manner as the first disk component 5.

In this way, by using the two disk parts to fully close the stator center hole 4a of the stator core 4, the electrical and electronic parts housed in the stator center hole 4a of the stator core 4 are completely closed. It can be covered, and it is possible to prevent the electric and electronic parts from moving and falling off during the transportation of the rotary electric machine 1 and the operation of the rotary electric machine 1. That is, the stator center hole 4a in which the electrical and electronic components are held is closed by the plurality of disk components, and the electrical and electronic components are sandwiched between the plurality of disk components, thereby preventing the electrical and electronic components from falling off and positioning the electrical and electronic components. It has a structure that can prevent slippage.

Further, by making the first disk component 5 and the second disk component 5e have the same shape, it is possible to standardize the components and simplify the manufacturing process. The plurality of disk parts for closing the stator center hole 4a may have different shapes.

As described above, in the rotary electric machine 1 according to the first embodiment, the stator center hole 4a in which an electric / electronic component can be incorporated is formed in the central portion of the stator core 4. Further, in the rotary electric machine 1, the first disk component 5 is fixed to the stator center hole 4a, and the shaft 3 is fixed to the first disk component 5, so that the stator core 4 and the stator core 4 pass through the first disk component 5. The shaft 3 is coupled. Then, the electrical and electronic components are mounted on the first disk component 5 fixed to the stator center hole 4a.

In such a rotary electric machine 1, since the electric and electronic parts are housed in the stator center hole 4a of the stator core 4, the electric and electronic parts are placed inside the outer shell of the rotary electric machine 1 without expanding the outer shell of the rotary electric machine. Can be stored in. Further, in the rotary electric machine 1, the first outer frame 2a and the second outer frame 2b also serve as the outer shell of the electric / electronic component that protects the electric / electronic component, and the outer shell for the electric / electronic component is unnecessary. It is possible to reduce the number of parts and material costs of the outer shell while reducing the size.

In the rotary electric machine 1, the weight of the stator core 4 is reduced and the weight of the rotary electric machine 1 is reduced as compared with the case where the shaft 3 is directly inserted and fixed to the central portion of the stator core 4. The material cost of the stator core 4 can be reduced and the workability of the rotary electric machine 1 can be improved.

Since the portion of the stator core 4 where the stator center hole 4a is formed is an electromagnetically unnecessary portion for driving the rotary electric machine 1, the above-mentioned effect is not deteriorated without deteriorating the performance of the rotary electric machine 1. Can be obtained.

Therefore, it is said that the rotary electric machine 1 according to the first embodiment can realize an outer rotor type rotary electric machine that can be miniaturized without increasing the number of outer parts due to the storage of electric and electronic parts. It works.

Embodiment 2.
FIG. 10 is a side view showing the ceiling fan 120 according to the second embodiment of the present invention. The ceiling fan 120 is an example in which the rotary electric machine 1 according to the first embodiment is mounted on a product, and includes the rotary electric machine 1 according to the first embodiment. Due to the specifications of the product, the rotary electric machine 1 is used as an electric machine. In the second embodiment, the same components as those in the first embodiment are designated by the same reference numerals, and the configurations different from those in the first embodiment will be mainly described.

The ceiling fan 120 is hung from the ceiling and installed. The ceiling fan 120 includes a rotary electric machine 1 and a plurality of wing portions 51 that rotate under the drive of the rotary electric machine 1. The plurality of blade portions 51 are located on the circumference coaxial with the rotary electric machine 1. The rotary electric machine 1 and the plurality of wing portions 51 form the main body of the ceiling fan 120. The lower side of the rotary electric machine 1 is covered with a cover 52. The shaft 53 is a hollow rod. The shaft 53 supports the main body of the ceiling fan 120. A shaft 3 which is a support shaft for supporting the rotary electric machine 1 is connected to the shaft 53. The upper end of the shaft 53 is fixed to the ceiling at the fixing portion 54. The power supply line connected to the commercial power supply passes through the inside of the shaft 53 from the ceiling and is connected to the power supply circuit of the rotary electric machine 1. In FIG. 10 , the ceiling, the commercial power supply, and the power supply circuit are not shown.

According to the second embodiment, the ceiling fan 120 can be made smaller and lighter by providing the rotary electric machine 1 according to the first embodiment, and the manufacturing cost can be reduced. That is, since the rotary electric machine 1 can be made smaller and lighter, the cover 52 and the shaft 53 can also be made smaller and lighter, and the manufacturing cost can be reduced.

The configuration shown in the above-described embodiment shows an example of the content of the present invention, can be combined with another known technique, and is one of the configurations as long as it does not deviate from the gist of the present invention. It is also possible to omit or change the part.

1 Outer rotor type rotary electric machine, 2a 1st outer frame, 2b 2nd outer frame, 2c 1st housing, 2d 2nd housing, 2e 1st cylindrical part, 2f 2nd cylindrical part, 3 axes, 3a one end, 4 stator Iron core, 4a stator center hole, 4b main winding slot, 4c auxiliary winding slot, 4d one side, 4e other side, 5 first disk component, 5a disk center hole, 5b first support, 5c second support Parts, 5d outer circumference, 5e 2nd disk parts, 6a 1st bearing, 6b 2nd bearing, 7 rotor, 8a main winding, 8b auxiliary winding, 9 condenser, 10 electronic circuit, 51 wing part, 52 cover, 53 Shaft, 54 fixed part, 120 ceiling fan.

Claims (6)

A rotor with a cylindrical shape and
An axis provided inside the rotor and extending along the central axis of the rotor,
The outer shell that houses the rotor inside and
A stator core having an inner diameter larger than the outer diameter of the shaft formed coaxially with the central axis of the rotor and arranged inside the rotor.
A disk component fixed coaxially with the center axis of the rotor in the stator center hole,
The electrical and electronic parts held in the disk parts and
Equipped with
The disk parts are
A disk center hole formed coaxially with the center axis of the rotor, a first support portion extending along the inner circumference of the disk center hole, and a region adjacent to the outer periphery on one surface of the disk component, the disk component. A second support portion that protrudes vertically from one surface and extends along the outer periphery of the disk component is provided.
It has a plate-like cross section with a uniform thickness and has a plate-like cross section.
By arranging the two disk parts so that the second support portions face each other in the direction along the central axis of the rotor, the stator center hole in which the electrical and electronic parts are held becomes the stator center hole. Being closed by two disc parts,
Outer rotor type rotary electric machine featuring. The two disk parts have the same shape.
The outer rotor type rotary electric machine according to claim 1. The first support portion projects vertically from one surface of the disk component to a region adjacent to the disk center hole on one surface of the disk component and extends along the inner circumference of the disk center hole.
The first support portion and the second support portion project vertically to one surface of the disk component in the same direction.
The outer rotor type rotary electric machine according to claim 1 or 2. The shaft is fixed to the disk component by being fixed to the disk center hole and the first support portion by press-fitting or caulking.
The disk component is fixed to the stator core by being fixed to the stator center hole by press-fitting or caulking.
The outer rotor type rotary electric machine according to any one of claims 1 to 3 . The first support portion has the same inner diameter dimension as the outer diameter dimension of the shaft, and has the same inner diameter dimension.
The second support portion has the same outer diameter dimension as the inner diameter dimension of the stator center hole.
The outer rotor type rotary electric machine according to any one of claims 1 to 4 . The outer rotor type rotary electric machine according to any one of claims 1 to 5 .
A wing portion that rotates under the drive of the outer rotor type rotary electric machine,
A ceiling fan characterized by being equipped with.

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