WO2020066117A1 - Outer-rotor-type rotating electric machine and ceiling fan - Google Patents

Outer-rotor-type rotating electric machine and ceiling fan Download PDF

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Publication number
WO2020066117A1
WO2020066117A1 PCT/JP2019/019782 JP2019019782W WO2020066117A1 WO 2020066117 A1 WO2020066117 A1 WO 2020066117A1 JP 2019019782 W JP2019019782 W JP 2019019782W WO 2020066117 A1 WO2020066117 A1 WO 2020066117A1
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WO
WIPO (PCT)
Prior art keywords
electric machine
rotor
rotating electric
center hole
stator
Prior art date
Application number
PCT/JP2019/019782
Other languages
French (fr)
Japanese (ja)
Inventor
正典 東耕
正樹 亀山
康博 池田
達也 山下
Original Assignee
三菱電機株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 三菱電機株式会社 filed Critical 三菱電機株式会社
Priority to MYPI2021001403A priority Critical patent/MY193007A/en
Priority to JP2020547951A priority patent/JP7053868B2/en
Publication of WO2020066117A1 publication Critical patent/WO2020066117A1/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D25/00—Pumping installations or systems
    • F04D25/02—Units comprising pumps and their driving means
    • F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
    • H02K11/30—Structural association with control circuits or drive circuits
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/14—Structural association with mechanical loads, e.g. with hand-held machine tools or fans

Definitions

  • the present invention relates to an outer rotor type rotating electric machine having a rotor on the outer peripheral side of a stator and a ceiling fan.
  • Rotating electric machines such as electric motors and generators are configured with shafts, bearings, stators, rotors, and shells.
  • the outer rotor type rotating electrical machine among the rotating electrical machines includes a stator inside the outer shell and a rotor on the outer peripheral side of the stator. Outer rotor type rotating electric machines are widely used for applications such as ceiling fans.
  • Such an outer rotor type rotating electric machine includes electric and electronic components for assisting driving.
  • an outer casing for the electric / electronic component is required separately from the outer periphery of the rotating electric machine, so that the number of parts of the outer casing increases, and assembling work is troublesome.
  • Patent Document 1 discloses an electric motor in which an inner space of a shell of a rotating electric machine is extended in a direction of a center axis of a rotor and electric and electronic components are built in the extended inner space.
  • the electric and electronic components are housed inside the outer shell of the rotating electric machine, the outer shell for the electric and electronic components is unnecessary, and the number of parts of the outer shell is reduced due to the storage of the electric and electronic components. Does not increase.
  • the present invention has been made in view of the above, and an object of the present invention is to provide an outer rotor type rotating electric machine that can be downsized without increasing the number of outer parts due to storage of electric and electronic components. I do.
  • an outer rotor type rotating electric machine includes a rotor having a cylindrical shape, and is fixed to a center of the rotor and extends along a central axis of the rotor.
  • an iron core is included in the outer rotor type rotating electric machine.
  • an outer rotor type rotating electric machine which can be reduced in size without increasing the number of outer parts due to storage of electric and electronic components.
  • FIG. 1 is a perspective view of an outer rotor type rotating electric machine according to a first embodiment of the present invention.
  • FIG. 2 is a sectional view of the outer rotor type rotating electric machine according to the first embodiment of the present invention, which is a longitudinal sectional view along line II-II in FIG. 1 is a perspective view showing an internal structure of an outer rotor type rotating electric machine according to a first embodiment of the present invention.
  • Top view of stator core of outer rotor type rotating electric machine according to Embodiment 1 of the present invention FIG.
  • FIG. 2 is a perspective view showing a state where the shaft and the first disk component of the outer rotor type rotating electric machine according to the first embodiment of the present invention are assembled.
  • 1 is a perspective view of a first disk component of an outer rotor type rotating electric machine according to a first embodiment of the present invention.
  • FIG. 4 is a perspective view showing a state where electric and electronic components for assisting the driving of the rotating electric machine are mounted on one surface of the first disk component shown in FIG. 4; Sectional drawing which shows the state where the stator center hole of the stator core shown in FIG. 8 was fully closed.
  • FIG. 1 is a perspective view of an outer rotor type rotating electric machine 1 according to Embodiment 1 of the present invention.
  • FIG. 2 is a cross-sectional view of the outer rotor type rotating electric machine 1 according to the first embodiment of the present invention, which is a longitudinal cross-sectional view along the line II-II in FIG.
  • FIG. 3 is a perspective view showing the internal structure of the outer rotor type rotating electric machine 1 according to the first embodiment of the present invention.
  • FIG. 4 is a perspective view showing a state where the shaft 3, the stator core 4, and the first disk component 5 in the outer rotor type rotating electric machine 1 according to the first embodiment of the present invention are assembled.
  • FIG. 1 is a perspective view of an outer rotor type rotating electric machine 1 according to Embodiment 1 of the present invention.
  • FIG. 2 is a cross-sectional view of the outer rotor type rotating electric machine 1 according to the first embodiment of the present invention, which is a longitudinal cross-sectional view along the line II-
  • FIG. 5 is a top view of the stator core 4 of the outer rotor type rotating electric machine 1 according to the first embodiment of the present invention.
  • FIG. 6 is a perspective view showing a state where the shaft 3 and the first disk component 5 of the outer rotor type rotating 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 rotating electric machine 1 according to the first embodiment of the present invention.
  • the outer rotor type rotating electric machine 1 is a rotating electric machine in which the rotor 7 rotates on the outer peripheral side of the stator core 4.
  • the outer rotor type rotating electric machine 1 is referred to as the rotating electric machine 1.
  • the rotating electric machine 1 includes a first outer frame 2a and a second outer frame 2b that form an outer shell of the rotating electric machine 1.
  • the rotating electric machine 1 includes a shaft 3, a stator core 4, a first disk component 5, a first bearing 6a, and a second bearing inside a shell constituted by a first shell frame 2a and a second shell frame 2b. 6 b and the rotor 7 are provided coaxially with the rotation axis of the rotating electric machine 1.
  • the central axes 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 , And coaxial with the rotation axis of the rotating electric machine 1.
  • the outer casing houses the rotating electric machine 1 including the rotor 7 therein.
  • the first outer frame 2a and the second outer frame 2b have a cylindrical shape with one bottom surface opened.
  • the first outer frame 2a and the second outer frame 2b are combined together with their open surfaces facing each other to form an outer shell of the rotary electric machine 1.
  • the first outer frame 2a includes a first housing 2c capable of holding the first bearing 6a on a cylindrical bottom surface, a first cylindrical portion 2e capable of holding the rotor 7 on an outer peripheral portion, and A space capable of covering the component is provided.
  • the second outer frame 2b includes a second housing 2d capable of holding the second bearing 6b on a cylindrical bottom surface, a second cylindrical portion 2f capable of holding the rotor 7 on an outer peripheral portion, and a second housing 2d. A space capable of covering the component is provided.
  • 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 located between the first outer frame 2a and the shaft 3, and connects the first outer frame 2a and the shaft 3 so that the rotating electric machine 1 can be driven smoothly.
  • the second bearing 6b is housed in the second housing 2d and located between the second outer frame 2b and the shaft 3, and connects the second outer frame 2b and the shaft 3 so that the rotating electric machine 1 can be driven smoothly. keeping.
  • the shaft 3 is a hollow shaft fixed to the first disk component 5 and extending along the center axis of the rotor 7, and is rotatably supported by the first bearing 6a and the second bearing 6b.
  • the shaft 3 has a strength capable of withstanding the weight of the rotating electric machine 1 and the torque and torsion associated with the rotational motion when the rotating electric machine 1 is driven and holding the rotating electric machine 1.
  • One end 3a side of the shaft 3 projects outside the first outer frame 2a.
  • One end 3a side of the shaft 3 protruding outside the first outer frame 2a is connected to a product such as a ceiling fan (not shown).
  • the rotor 7 has a cylindrical shape, and is disposed around the shaft 3 at the outer peripheral side of the stator core 4, that is, outside the stator core 4, with a gap between the outer periphery of the stator core 4 and the gap.
  • 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. Note that 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 have a close-fit or intermediate-fit relationship. High precision and easy coupling by press fit or swaging.
  • 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.
  • 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, is formed by stacking a plurality of electromagnetic steel sheets in the axial direction, and is arranged inside the rotor 7 coaxially with the center axis of the rotor 7.
  • a cylindrical stator center hole 4 a for press-fitting and holding the first disk component 5 is formed in the center portion coaxially with the center axis of the rotor 7.
  • the stator center hole 4 a is coaxial with the center axis and the axis 3 of the stator core 4.
  • the stator center hole 4 a has an inner diameter larger than the outer diameter of the shaft 3, and has a larger volume than the volume through which the shaft 3 is inserted at the center of the stator core 4.
  • the stator center hole 4 a is formed in a portion of the stator core 4 that is electromagnetically unnecessary when a magnetic path is formed in the stator core 4 to drive the rotating 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 small.
  • a plurality of auxiliary winding slots 4c arranged in a circular shape are provided on the outer peripheral side of the stator center hole 4a in the stator core 4. Further, a plurality of main winding slots 4b arranged in a circular shape are provided on the stator core 4 on the outer peripheral side of the auxiliary winding slots 4c.
  • a main winding 8a which is a stator winding, is wound around the main winding slot 4b so that a magnetic path can be formed in the stator core 4.
  • an 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, is formed with a disk center hole 5a for press-fitting and holding the shaft 3 in the center, and is fixed in the stator center hole 4a coaxially with the center axis of the rotor 7. Parts. That is, the first disk component 5 has an annular shape.
  • the disk center hole 5a is coaxial with the center 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 periphery of the disk center hole 5a.
  • a support 5b is provided.
  • the first disk component 5 protrudes vertically from one surface of the first disk component 5 and extends along the outer circumference of the first disk component 5 in a region adjacent to the outer periphery 5 d on one surface of the first disk component 5.
  • a support 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 central axis direction of the first disk component 5. Along 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 directions opposite to each other in the center axis direction of the first disk component 5.
  • the first support 5b has the same inner diameter as the outer diameter of the shaft 3, and has the same inner diameter as the disk center hole 5a.
  • the second support portion 5c has the same outer diameter as the inner diameter of the stator center hole 4a of the stator core 4, and has the same outer size as the first disk component 5.
  • the inner diameter of the disk center hole 5a of the first disk component 5, the inner diameter of the first support portion 5b, and the outer diameter of the shaft 3 are in a close-fit or intermediate-fit relationship, and are easily and accurately coupled by press-fitting or caulking. it can. That is, the shaft 3 is press-fitted or crimped and fixed to the disc center hole 5a and the first support portion 5b of the first disc component 5.
  • the diameter of the outer periphery 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 fit or intermediate fit, and can be easily and accurately joined by press-fitting or crimping. That is, the first disk component 5 is press-fitted or crimped and fixed to the stator center hole 4 a of the stator core 4.
  • first support portion 5b and the second support portion 5c of the first disk component 5 are both in a close-fit or intermediate-fit relationship with the object to be joined, high precision is achieved by press-fitting or caulking. In addition, it can be combined with an object to be easily combined.
  • the stator center hole 4 a coaxial with the shaft 3 is formed in the stator core 4, and the shaft 3 and the stator core 4 are formed using the first disc component 5. And can be easily combined.
  • the stator center hole 4 a has an inner diameter larger than the outer diameter of the shaft 3, and has a larger volume than the volume through which the shaft 3 is inserted at the center of the stator core 4. For this reason, compared with the case where the shaft 3 is directly inserted into the center of the stator core 4 and fixed, the electromagnetic steel plate used for the stator core 4 can be reduced, and the weight of the rotating electric machine 1 can be reduced. Can be reduced. This makes it possible to reduce the weight of the rotating electric machine 1, reduce the material cost, and improve the workability of the rotating electric machine 1.
  • the inner diameter of the center hole of the stator core 4 for inserting the shaft 3 is larger than the outer diameter of the shaft 3. If this is done, it becomes difficult to fasten the shaft 3 and the stator core 4. Therefore, the inner diameter of the hole at the center of the stator core 4 needs to be the same as the outer diameter of the shaft 3.
  • the hole diameter of the stator center hole 4 a can be made larger than the outer diameter of the shaft 3. Since a large cavity can be provided at the center of the stator core 4, the number of cores used for the stator core 4 can be reduced.
  • FIG. 8 is a perspective view showing a state in which electric and electronic components for assisting driving of the rotary electric machine 1 are mounted on one surface of the first disk component 5 shown in FIG. 8, a capacitor 9 and an electronic circuit 10 are mounted on one surface of the first disk component 5 as electric and electronic components.
  • the electric and electronic components are mounted on one surface of the first disk component 5 so that the stator center hole 4 a of the stator core 4 is formed with the shaft 3 and the stator core using the first disk component 5. 4 can be effectively used for purposes other than the purpose of combining with FIG. That is, as shown in FIG.
  • the electric and electronic components are accommodated in the stator center hole 4 a of the stator core 4, so that the electric and electronic components correspond to the first outer frame 2 a forming the outer periphery of the rotating electric machine 1. It is structured to be covered with the second outer frame 2b.
  • the first outer frame 2a and the second outer frame 2b also function as outer shells of the electric and electronic components for protecting the electric and electronic components, and the outer shell for the electric and electronic components is not required.
  • the number of parts can be reduced.
  • stator center hole 4a of the stator core 4 there is no contact with a rotating object such as the rotor 7 and contact with the rotating object such as the rotor 7 is avoided. Therefore, there is no need to provide a large space inside the outer shell, so that the rotating electric machine 1 does not become large, and the design and the workability do not deteriorate.
  • FIG. 9 is a cross-sectional view showing a state where the stator center hole 4a of the stator core 4 shown in FIG. 8 is in a fully closed state.
  • 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 formed by the first disk component 5 and the second disk component 5e.
  • 3 shows a state in which it is closed from the direction 3 and is in a fully closed state.
  • stator center hole 4a of the stator core 4 has one surface 4d side of the stator core 4 closed by the first disk component 5 and another surface 4e side of the stator core 4 closed by the second disk component 5e. Is peeling.
  • the stator center hole 4a of the stator core 4 is closed by the first disc component 5 and the second disc component 5e from both sides of the center axis direction of the stator center hole 4a to be in a fully closed state.
  • the second disk component 5e uses the same component as the first disk component 5, and is press-fitted or crimped and fixed to the stator center hole 4a of the stator core 4 like the first disk component 5.
  • the stator center hole 4a of the stator core 4 by completely closing the stator center hole 4a of the stator core 4 using the two disk components, the electric and electronic components housed in the stator center hole 4a of the stator core 4 can be completely removed. It is possible to prevent the electric and electronic components from moving and falling when the rotating electric machine 1 is transported and when the rotating electric machine 1 is operated. That is, the stator center hole 4a holding the electric and electronic components is closed by the plurality of disk components, and the electric and electronic components are sandwiched by the plurality of disk components, thereby preventing the electric and electronic components from falling off and preventing the position. It has a structure that can prevent displacement.
  • first disk component 5 and the second disk component 5e have the same shape, the components can be shared, and the manufacturing process can be simplified.
  • the plurality of disk components for closing the stator center hole 4a may have different shapes.
  • the stator center hole 4a in which electric and electronic components can be built is formed in the center portion of the stator core 4.
  • the rotating electric machine 1 is configured such that 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 are interposed via the first disk component 5. Axis 3 is connected. Then, the electric and electronic components are mounted on the first disk component 5 fixed to the stator center hole 4a.
  • the electric and electronic components are housed in the stator center hole 4 a of the stator core 4, the electric and electronic components can be placed inside the outer periphery of the rotating electric machine 1 without expanding the outer periphery of the rotating electric machine 1. Can be stored.
  • the first outer frame 2a and the second outer frame 2b also function as outer shells of the electric and electronic components that protect the electric and electronic components, and the outer shell for the electric and electronic components is not required. The size can be reduced and the number of parts in the outer shell and the material cost can be reduced.
  • the rotating electric machine 1 is reduced in weight by reducing the weight of the stator core 4 as compared with a case where the shaft 3 is directly inserted into the center portion of the stator core 4 and fixed,
  • the material cost of the stator core 4 can be reduced and the workability of the rotating electric machine 1 can be improved.
  • the portion of the stator core 4 where the stator center hole 4a is formed is an electromagnetically unnecessary portion for driving the rotating electric machine 1, the above-described effects can be obtained without deteriorating the performance of the rotating electric machine 1. Can be obtained.
  • the rotating electric machine 1 according to the first embodiment can realize an outer rotor type rotating electric machine which can be downsized without increasing the number of outer parts due to storage of electric and electronic components. It works.
  • FIG. 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 rotating electric machine 1 according to the first embodiment is mounted on a product, and includes the rotating electric machine 1 according to the first embodiment.
  • the rotating electric machine 1 is used as a motor in terms of product specifications.
  • the same components as those in the first embodiment are denoted by the same reference numerals, and a configuration different from the first embodiment will be mainly described.
  • the ceiling fan 120 is suspended from the ceiling and installed.
  • the ceiling fan 120 includes the rotating electric machine 1 and a plurality of wings 51 that rotate by being driven by the rotating electric machine 1.
  • the plurality of wing portions 51 are located on a circumference coaxial with the rotating electric machine 1.
  • the rotating electric machine 1 and the plurality of wing portions 51 constitute a main body of the ceiling fan 120.
  • the lower side of the rotating 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.
  • the shaft 53 which is a support shaft that supports the rotating electric machine 1, is connected to the shaft 53.
  • the upper end of the shaft 53 is fixed to the ceiling at the fixing part 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 rotating electric machine 1.
  • FIG. 9 illustration of a ceiling, a commercial power supply, and a power supply circuit is omitted.
  • the ceiling fan 120 can be reduced in size and weight, and the manufacturing cost can be reduced. That is, since the rotating electric machine 1 can be reduced in size and weight, the cover 52 and the shaft 53 can also be reduced in size and weight, and the manufacturing cost can be reduced.
  • 1 outer rotor type rotary electric machine 2a first outer frame, 2b second outer frame, 2c first housing, 2d second housing, 2e first cylindrical portion, 2f second cylindrical portion, 3 axis, 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 portion, 5c second support Part, 5d outer circumference, 5e second disk component, 6a first bearing, 6b second bearing, 7 rotor, 8a main winding, 8b auxiliary winding, 9 capacitor, 10 electronic circuit, 51 wing, 52 cover, 53 Shaft, 54 fixed part, 120 ceiling fan.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)

Abstract

An outer-rotor-type rotating electric machine (1) is provided with: a rotor (7) having a cylindrical shape; a shaft (3) fixed at the center of the rotor (7) and extending along a central axis of the rotor (7); an outer case for housing the rotor (7) therein; and a stator core (4) which is disposed inward of the rotor (7) and in which a stator center hole (4a) having an inner diameter greater than the outer diameter of the shaft (3) is formed coaxially with the central axis of the rotor (7). Furthermore, the outer-rotor-type rotating electric machine (1) is provided with: a disc component fixed, in the stator center hole (4a), coaxially with the central axis of the rotor (7); and an electric/electronic component held on the disc component.

Description

アウターロータ型回転電機および天井扇風機Outer rotor type rotating electric machine and ceiling fan
　本発明は、固定子の外周側に回転子を備えるアウターロータ型回転電機および天井扇風機に関する。 The present invention relates to an outer rotor type rotating electric machine having a rotor on the outer peripheral side of a stator and a ceiling fan.
　電動機および発電機などの回転電機は軸、軸受、固定子、回転子および外郭を備えて構成されている。また、回転電機のうちアウターロータ型回転電機は、外郭の内部において内側に固定子を備え、固定子の外周側に回転子を備える。アウターロータ型回転電機は、天井扇風機などの用途に広く用いられている。 回 転 Rotating electric machines such as electric motors and generators are configured with shafts, bearings, stators, rotors, and shells. The outer rotor type rotating electrical machine among the rotating electrical machines includes a stator inside the outer shell and a rotor on the outer peripheral side of the stator. Outer rotor type rotating electric machines are widely used for applications such as ceiling fans.
　このようなアウターロータ型回転電機は、駆動を補助する電気電子部品を備えている。電気電子部品が回転電機の外郭の外部に取付けられる場合には、回転電機の外郭とは別に電気電子部品用の外郭が必要となり、外郭の部品点数が増加し、組み立て作業に手間が掛かる。 Such an outer rotor type rotating electric machine includes electric and electronic components for assisting driving. When the electric / electronic component is attached to the outside of the outer periphery of the rotating electric machine, an outer casing for the electric / electronic component is required separately from the outer periphery of the rotating electric machine, so that the number of parts of the outer casing increases, and assembling work is troublesome.
　特許文献１には、回転電機の外郭の内部空間が回転子の中心軸方向に拡張され、拡張された内部空間に電気電子部品が内蔵された電動機が開示されている。特許文献１に開示された電動機は、回転電機の外郭の内部に電気電子部品が収納されるため、電気電子部品用の外郭が不要であり、電気電子部品の収納に起因して外郭の部品点数が増加することがない。 Patent Document 1 discloses an electric motor in which an inner space of a shell of a rotating electric machine is extended in a direction of a center axis of a rotor and electric and electronic components are built in the extended inner space. In the electric motor disclosed in Patent Document 1, since the electric and electronic components are housed inside the outer shell of the rotating electric machine, the outer shell for the electric and electronic components is unnecessary, and the number of parts of the outer shell is reduced due to the storage of the electric and electronic components. Does not increase.
特許第４３５４１９３号公報Japanese Patent No. 4354193
　しかしながら、上記特許文献１に開示された電動機は、電気電子部品を電動機の外郭に内蔵するため、回転子等の回転物と電気電子部品との接触を防ぐ必要がある。このため、特許文献１に開示された電動機は、回転電機の外郭の内部に電気電子部品を収納するために大きな空間を設ける必要があり、回転電機が大型化してしまう、という問題があった。 However, in the electric motor disclosed in Patent Literature 1, since the electric and electronic parts are built in the outer shell of the electric motor, it is necessary to prevent contact between a rotating object such as a rotor and the electric and electronic parts. For this reason, the electric motor disclosed in Patent Literature 1 needs to provide a large space for accommodating electric and electronic components inside the outer casing of the rotating electric machine, and there is a problem that the rotating electric machine becomes large.
　本発明は、上記に鑑みてなされたものであって、電気電子部品の収納に起因して外郭の部品点数が増加することがなく小型化が可能なアウターロータ型回転電機を得ることを目的とする。 The present invention has been made in view of the above, and an object of the present invention is to provide an outer rotor type rotating electric machine that can be downsized without increasing the number of outer parts due to storage of electric and electronic components. I do.
　上述した課題を解決し、目的を達成するために、本発明にかかるアウターロータ型回転電機は、円筒形状を有する回転子と、回転子の中央に固定されて回転子の中心軸に沿って延びる軸と、回転子を内部に収容する外郭と、軸の外径よりも大きな内径を有する固定子中心孔が回転子の中心軸と同軸に形成されて、回転子の内側に配置される固定子鉄心と、を備える。また、アウターロータ型回転電機は、固定子中心孔内に回転子の中心軸と同軸に固定される円盤部品と、円盤部品に保持される電気電子部品と、を備える。 In order to solve the above-described problems and achieve the object, an outer rotor type rotating electric machine according to the present invention includes a rotor having a cylindrical shape, and is fixed to a center of the rotor and extends along a central axis of the rotor. A shaft, an outer shell for housing the rotor inside, and a stator center hole having an inner diameter larger than the outer diameter of the shaft formed coaxially with the center axis of the rotor, and a stator disposed inside the rotor. And an iron core. In addition, the outer rotor type rotating electric machine includes a disk component fixed in the stator center hole coaxially with the center axis of the rotor, and an electric / electronic component held by the disk component.
　本発明によれば、電気電子部品の収納に起因して外郭の部品点数が増加することがなく小型化が可能なアウターロータ型回転電機が得られる、という効果を奏する。 According to the present invention, it is possible to obtain an outer rotor type rotating electric machine which can be reduced in size without increasing the number of outer parts due to storage of electric and electronic components.
本発明の実施の形態１にかかるアウターロータ型回転電機の斜視図1 is a perspective view of an outer rotor type rotating electric machine according to a first embodiment of the present invention. 本発明の実施の形態１にかかるアウターロータ型回転電機の断面図であり、図１における線分ＩＩ－ＩＩに沿った縦断面図FIG. 2 is a sectional view of the outer rotor type rotating electric machine according to the first embodiment of the present invention, which is a longitudinal sectional view along line II-II in FIG. 本発明の実施の形態１にかかるアウターロータ型回転電機の内部構造を示す斜視図1 is a perspective view showing an internal structure of an outer rotor type rotating electric machine according to a first embodiment of the present invention. 本発明の実施の形態１にかかるアウターロータ型回転電機における軸と固定子鉄心と第１円盤部品とが組み立てられた状態を示す斜視図Perspective view showing a state in which a shaft, a stator core, and a first disk component are assembled in an outer rotor type rotating electric machine according to a first embodiment of the present invention. 本発明の実施の形態１にかかるアウターロータ型回転電機の固定子鉄心の上面図Top view of stator core of outer rotor type rotating electric machine according to Embodiment 1 of the present invention 本発明の実施の形態１にかかるアウターロータ型回転電機の軸と第１円盤部品とが組み立てられた状態を示す斜視図FIG. 2 is a perspective view showing a state where the shaft and the first disk component of the outer rotor type rotating electric machine according to the first embodiment of the present invention are assembled. 本発明の実施の形態１にかかるアウターロータ型回転電機の第１円盤部品の斜視図1 is a perspective view of a first disk component of an outer rotor type rotating electric machine according to a first embodiment of the present invention. 図４に示す第１円盤部品の一面上に回転電機の駆動を補助する電気電子部品が実装された状態を示す斜視図FIG. 4 is a perspective view showing a state where electric and electronic components for assisting the driving of the rotating electric machine are mounted on one surface of the first disk component shown in FIG. 4; 図８に示す固定子鉄心の固定子中心孔が全閉状態とされた状態を示す断面図Sectional drawing which shows the state where the stator center hole of the stator core shown in FIG. 8 was fully closed. 本発明の実施の形態２にかかる天井扇風機を示す側面図Side view showing a ceiling fan according to a second embodiment of the present invention.
　以下に、本発明の実施の形態にかかるアウターロータ型回転電機および天井扇風機を図面に基づいて詳細に説明する。なお、この実施の形態によりこの発明が限定されるものではない。 Hereinafter, an outer rotor type rotating electric machine and a ceiling fan according to an embodiment of the present invention will be described in detail with reference to the drawings. The present invention is not limited by the embodiment.
実施の形態１．
　図１は、本発明の実施の形態１にかかるアウターロータ型回転電機１の斜視図である。図２は、本発明の実施の形態１にかかるアウターロータ型回転電機１の断面図であり、図１における線分ＩＩ－ＩＩに沿った縦断面図である。図３は、本発明の実施の形態１にかかるアウターロータ型回転電機１の内部構造を示す斜視図である。図４は、本発明の実施の形態１にかかるアウターロータ型回転電機１における軸３と固定子鉄心４と第１円盤部品５とが組み立てられた状態を示す斜視図である。図５は、本発明の実施の形態１にかかるアウターロータ型回転電機１の固定子鉄心４の上面図である。図６は、本発明の実施の形態１にかかるアウターロータ型回転電機１の軸３と第１円盤部品５とが組み立てられた状態を示す斜視図である。図７は、本発明の実施の形態１にかかるアウターロータ型回転電機１の第１円盤部品５の斜視図である。 Embodiment 1 FIG.
FIG. 1 is a perspective view of an outer rotor type rotating electric machine 1 according to Embodiment 1 of the present invention. FIG. 2 is a cross-sectional view of the outer rotor type rotating electric machine 1 according to the first embodiment of the present invention, which is a longitudinal cross-sectional view along the line II-II in FIG. FIG. 3 is a perspective view showing the internal structure of the outer rotor type rotating electric machine 1 according to the first embodiment of the present invention. FIG. 4 is a perspective view showing a state where the shaft 3, the stator core 4, and the first disk component 5 in the outer rotor type rotating 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 rotating electric machine 1 according to the first embodiment of the present invention. FIG. 6 is a perspective view showing a state where the shaft 3 and the first disk component 5 of the outer rotor type rotating 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 rotating electric machine 1 according to the first embodiment of the present invention.
　本実施の形態１にかかるアウターロータ型回転電機１は、回転子７が固定子鉄心４の外周側で回る回転電機である。以下、アウターロータ型回転電機１を回転電機１と呼ぶ。回転電機１は、回転電機１の外郭を構成する第１外郭フレーム２ａと第２外郭フレーム２ｂとを備える。また、回転電機１は、第１外郭フレーム２ａと第２外郭フレーム２ｂとで構成される外郭の内部に、軸３、固定子鉄心４、第１円盤部品５、第１軸受６ａ、第２軸受６ｂおよび回転子７を、回転電機１の回転軸と同軸上に備える。すなわち、第１外郭フレーム２ａ、第２外郭フレーム２ｂ、軸３の一部、固定子鉄心４、第１円盤部品５、第１軸受６ａ、第２軸受６ｂおよび回転子７の各々の中心軸は、回転電機１の回転軸と同軸である。外郭は、回転子７を含む回転電機１を内部に収容する。 The outer rotor type rotating electric machine 1 according to the first embodiment is a rotating electric machine in which the rotor 7 rotates on the outer peripheral side of the stator core 4. Hereinafter, the outer rotor type rotating electric machine 1 is referred to as the rotating electric machine 1. The rotating electric machine 1 includes a first outer frame 2a and a second outer frame 2b that form an outer shell of the rotating electric machine 1. In addition, the rotating electric machine 1 includes a shaft 3, a stator core 4, a first disk component 5, a first bearing 6a, and a second bearing inside a shell constituted by a first shell frame 2a and a second shell frame 2b. 6 b and the rotor 7 are provided coaxially with the rotation axis of the rotating electric machine 1. That is, the central axes 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 , And coaxial with the rotation axis of the rotating electric machine 1. The outer casing houses the rotating electric machine 1 including the rotor 7 therein.
　第１外郭フレーム２ａおよび第２外郭フレーム２ｂは、一方の底面側が開口された円筒形状を有する。第１外郭フレーム２ａおよび第２外郭フレーム２ｂは、各々における開口された面を向かい合わせて組み合わされて回転電機１の外郭を構成する。第１外郭フレーム２ａは、第１軸受６ａを保持可能な第１ハウジング２ｃを円筒形状の底面部に備え、回転子７を保持可能な第１円筒部２ｅを外周部に備え、回転電機１の構成部を覆うことが可能な空間を備える。第２外郭フレーム２ｂは、第２軸受６ｂを保持可能な第２ハウジング２ｄを円筒形状の底面部に備え、回転子７を保持可能な第２円筒部２ｆを外周部に備え、回転電機１の構成部を覆うことが可能な空間を備える。第１外郭フレーム２ａおよび第２外郭フレーム２ｂは、第１軸受６ａおよび第２軸受６ｂを介して軸３に回転可能に取り付けられている。 The first outer frame 2a and the second outer frame 2b have a cylindrical shape with one bottom surface opened. The first outer frame 2a and the second outer frame 2b are combined together with their open surfaces facing each other to form an outer shell of the rotary electric machine 1. The first outer frame 2a includes a first housing 2c capable of holding the first bearing 6a on a cylindrical bottom surface, a first cylindrical portion 2e capable of holding the rotor 7 on an outer peripheral portion, and A space capable of covering the component is provided. The second outer frame 2b includes a second housing 2d capable of holding the second bearing 6b on a cylindrical bottom surface, a second cylindrical portion 2f capable of holding the rotor 7 on an outer peripheral portion, and a second housing 2d. A space capable of covering the component is provided. 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.
　第１軸受６ａおよび第２軸受６ｂは、軸方向において第１円盤部品５を挟む両側の位置に配置されている。第１軸受６ａは、第１ハウジング２ｃ内に収納されて第１外郭フレーム２ａと軸３との間に位置し、回転電機１が円滑に駆動できるように第１外郭フレーム２ａと軸３とを保持している。第２軸受６ｂは、第２ハウジング２ｄ内に収納されて第２外郭フレーム２ｂと軸３との間に位置し、回転電機１が円滑に駆動できるように第２外郭フレーム２ｂと軸３とを保持している。 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 located between the first outer frame 2a and the shaft 3, and connects the first outer frame 2a and the shaft 3 so that the rotating electric machine 1 can be driven smoothly. keeping. The second bearing 6b is housed in the second housing 2d and located between the second outer frame 2b and the shaft 3, and connects the second outer frame 2b and the shaft 3 so that the rotating electric machine 1 can be driven smoothly. keeping.
　軸３は、第１円盤部品５に固定されて回転子７の中心軸に沿って延びる中空軸であり、第１軸受６ａおよび第２軸受６ｂによって回転可能に支持されている。軸３は、回転電機１の重量と、回転電機１の駆動時の回転運動に伴うトルクおよびねじれ等と、に耐えて回転電機１を保持可能な強度を有する。軸３の一端３ａ側は、第１外郭フレーム２ａの外部に突出している。第１外郭フレーム２ａの外部に突出した軸３の一端３ａ側は、図示しない天井扇風機などの製品と結合される。 The shaft 3 is a hollow shaft fixed to the first disk component 5 and extending along the center axis of the rotor 7, and is rotatably supported by the first bearing 6a and the second bearing 6b. The shaft 3 has a strength capable of withstanding the weight of the rotating electric machine 1 and the torque and torsion associated with the rotational motion when the rotating electric machine 1 is driven and holding the rotating electric machine 1. One end 3a side of the shaft 3 projects outside the first outer frame 2a. One end 3a side of the shaft 3 protruding outside the first outer frame 2a is connected to a product such as a ceiling fan (not shown).
　回転子７は、円筒形状を有し、固定子鉄心４の外周と隙間を介して、固定子鉄心４の外周側、すなわち固定子鉄心４の外側に、軸３を中心として配置されている。回転子７は、固定子鉄心４の外径寸法よりも僅かに大きい寸法の内径を備え、第１外郭フレーム２ａの第１円筒部２ｅの内径寸法および第２外郭フレーム２ｂの第２円筒部２ｆの内径寸法と同じ寸法の外径を備える。なお、第１外郭フレーム２ａの第１円筒部２ｅの内径および第２外郭フレーム２ｂの第２円筒部２ｆの内径と、回転子７の外径とは、締り嵌めまたは中間嵌めの関係にあり、圧入またはカシメによって高精度かつ容易に結合できる。 The rotor 7 has a cylindrical shape, and is disposed around the shaft 3 at the outer peripheral side of the stator core 4, that is, outside the stator core 4, with a gap between the outer periphery of the stator core 4 and the gap. 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. Note that 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 have a close-fit or intermediate-fit relationship. High precision and easy coupling by press fit or swaging.
　したがって、回転子７は、圧入またはカシメによって第１外郭フレーム２ａの第１円筒部２ｅおよび第２外郭フレーム２ｂの第２円筒部２ｆに強固に固定されている。これにより、回転子７は、第１外郭フレーム２ａおよび第２外郭フレーム２ｂとともに、第１軸受６ａおよび第２軸受６ｂによって、回転可能に支持されている。 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. Thus, 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.
　固定子鉄心４は、円筒形状を有し、複数枚の電磁鋼板が軸方向に積層されて構成されて回転子７の内側に回転子７の中心軸と同軸に配置されている。固定子鉄心４は、中心部に第１円盤部品５を圧入保持する円筒形の固定子中心孔４ａが、回転子７の中心軸と同軸に形成されている。固定子中心孔４ａは、固定子鉄心４の中心軸および軸３と同軸とされている。固定子中心孔４ａは、軸３の外径よりも大きな内径を有し、固定子鉄心４の中心部分において軸３が挿通する体積よりも大きな体積を有する。固定子中心孔４ａは、固定子鉄心４において、回転電機１を駆動するために固定子鉄心４に磁路を形成する際に電磁気的に不要な部分に形成されている。また、固定子中心孔４ａは、固定子鉄心４において、磁気回路に与える影響が微量な部分に形成されている。 The stator core 4 has a cylindrical shape, is formed by stacking a plurality of electromagnetic steel sheets in the axial direction, and is arranged inside the rotor 7 coaxially with the center axis of the rotor 7. In the stator core 4, a cylindrical stator center hole 4 a for press-fitting and holding the first disk component 5 is formed in the center portion coaxially with the center axis of the rotor 7. The stator center hole 4 a is coaxial with the center axis and the axis 3 of the stator core 4. The stator center hole 4 a has an inner diameter larger than the outer diameter of the shaft 3, and has a larger volume than the volume through which the shaft 3 is inserted at the center of the stator core 4. The stator center hole 4 a is formed in a portion of the stator core 4 that is electromagnetically unnecessary when a magnetic path is formed in the stator core 4 to drive the rotating 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 small.
　固定子鉄心４における固定子中心孔４ａの外周側には、円状に分散配置された複数の補助巻線用スロット４ｃが設けられている。また、固定子鉄心４における補助巻線用スロット４ｃよりも外周側には、円状に分散配置された複数の主巻線用スロット４ｂが設けられている。主巻線用スロット４ｂには、固定子鉄心４に磁路を形成できるように、固定子巻線である主巻線８ａが巻回される。同様に、補助巻線用スロット４ｃには、固定子鉄心４に磁路を形成できるように、固定子巻線である補助巻線８ｂが巻回される。 A plurality of auxiliary winding slots 4c arranged in a circular shape are provided on the outer peripheral side of the stator center hole 4a in the stator core 4. Further, a plurality of main winding slots 4b arranged in a circular shape are provided on the stator core 4 on the outer peripheral side of the auxiliary winding slots 4c. A main winding 8a, which is a stator winding, is wound around the main winding slot 4b so that a magnetic path can be formed in the stator core 4. Similarly, an 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.
　第１円盤部品５は、円盤形状を有し、中心部に軸３を圧入保持する円盤中心孔５ａが形成され、固定子中心孔４ａ内に回転子７の中心軸と同軸に固定される円盤部品である。すなわち、第１円盤部品５は、円環形状を有する。円盤中心孔５ａは、回転子７の中心軸と同軸、すなわち軸３と同軸とされており、軸３の外径寸法と同じの内径寸法を有する。 The first disk component 5 has a disk shape, is formed with a disk center hole 5a for press-fitting and holding the shaft 3 in the center, and is fixed in the stator center hole 4a coaxially with the center axis of the rotor 7. Parts. That is, the first disk component 5 has an annular shape. The disk center hole 5a is coaxial with the center 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.
　第１円盤部品５は、第１円盤部品５の一面において円盤中心孔５ａに隣接する領域に、第１円盤部品５の一面から垂直に突出して円盤中心孔５ａの内周に沿って延びる第１支持部５ｂを備える。また、第１円盤部品５は、第１円盤部品５の一面において外周５ｄに隣接する領域に、第１円盤部品５の一面から垂直に突出して第１円盤部品５の外周に沿って延びる第２支持部５ｃを備える。すなわち、第１円盤部品５の内周側に設けられた第１支持部５ｂと第１円盤部品５の外周側に設けられた第２支持部５ｃとは、第１円盤部品５の中心軸方向に沿って突出しており、第１円盤部品５の一面に垂直に同一方向に突出している。なお、第１支持部５ｂと第２支持部５ｃとは、第１円盤部品５の中心軸方向において互いに反対方向に突出してもよい。 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 periphery of the disk center hole 5a. A support 5b is provided. In addition, the first disk component 5 protrudes vertically from one surface of the first disk component 5 and extends along the outer circumference of the first disk component 5 in a region adjacent to the outer periphery 5 d on one surface of the first disk component 5. A support 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 central axis direction of the first disk component 5. Along 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 directions opposite to each other in the center axis direction of the first disk component 5.
　第１支持部５ｂは、軸３の外径寸法と同じの内径寸法を有し、円盤中心孔５ａと同じ内径寸法を有する。第２支持部５ｃは、固定子鉄心４の固定子中心孔４ａの内径寸法と同じの外径寸法を有し、第１円盤部品５と同じ外形寸法を有する。 The first support 5b has the same inner diameter as the outer diameter of the shaft 3, and has the same inner diameter as the disk center hole 5a. The second support portion 5c has the same outer diameter as the inner diameter of the stator center hole 4a of the stator core 4, and has the same outer size as the first disk component 5.
　第１円盤部品５の円盤中心孔５ａの内径および第１支持部５ｂの内径と、軸３の外径とは、締り嵌めまたは中間嵌めの関係にあり、圧入またはカシメによって高精度かつ容易に結合できる。すなわち、軸３は、第１円盤部品５の円盤中心孔５ａおよび第１支持部５ｂに圧入固定またはカシメ固定されている。 The inner diameter of the disk center hole 5a of the first disk component 5, the inner diameter of the first support portion 5b, and the outer diameter of the shaft 3 are in a close-fit or intermediate-fit relationship, and are easily and accurately coupled by press-fitting or caulking. it can. That is, the shaft 3 is press-fitted or crimped and fixed to the disc center hole 5a and the first support portion 5b of the first disc component 5.
　第１円盤部品５の外周５ｄの直径と、固定子鉄心４の固定子中心孔４ａの内径とは、締り嵌めまたは中間嵌めの関係にあり、圧入またはカシメによって高精度かつ容易に結合できる。すなわち、第１円盤部品５は、固定子鉄心４の固定子中心孔４ａに圧入固定またはカシメ固定されている。 直径 The diameter of the outer periphery 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 fit or intermediate fit, and can be easily and accurately joined by press-fitting or crimping. That is, the first disk component 5 is press-fitted or crimped and fixed to the stator center hole 4 a of the stator core 4.
　このように、第１円盤部品５の第１支持部５ｂと第２支持部５ｃとは、いずれも結合する対象物と締り嵌めまたは中間嵌めの関係とされることで、圧入またはカシメによって高精度かつ容易に結合する対象物と結合可能とされている。 As described above, since the first support portion 5b and the second support portion 5c of the first disk component 5 are both in a close-fit or intermediate-fit relationship with the object to be joined, high precision is achieved by press-fitting or caulking. In addition, it can be combined with an object to be easily combined.
　上記のように構成される回転電機１は、軸３と同軸とされた固定子中心孔４ａが固定子鉄心４に形成されており、第１円盤部品５を用いて軸３と固定子鉄心４とを容易に結合することができる。そして、固定子中心孔４ａは、軸３の外径よりも大きな内径を有し、固定子鉄心４の中心部分において軸３が挿通する体積よりも大きな体積を有する。このため、軸３が固定子鉄心４の中心部分に直接挿通されて固定される場合と比べて、固定子鉄心４に使用される電磁鋼鈑を削減することができ、回転電機１の重量を減らすことができる。これにより、回転電機１は、軽量化を図ることが可能であり、材料費の低減を図るとともに回転電機１の施工性の向上が図れる。 In the rotating electric machine 1 configured as described above, the stator center hole 4 a coaxial with the shaft 3 is formed in the stator core 4, and the shaft 3 and the stator core 4 are formed using the first disc component 5. And can be easily combined. The stator center hole 4 a has an inner diameter larger than the outer diameter of the shaft 3, and has a larger volume than the volume through which the shaft 3 is inserted at the center of the stator core 4. For this reason, compared with the case where the shaft 3 is directly inserted into the center of the stator core 4 and fixed, the electromagnetic steel plate used for the stator core 4 can be reduced, and the weight of the rotating electric machine 1 can be reduced. Can be reduced. This makes it possible to reduce the weight of the rotating electric machine 1, reduce the material cost, and improve the workability of the rotating electric machine 1.
　また、軸３が固定子鉄心４の中心部分に直接挿通されて固定される場合には、軸３を挿通させるための固定子鉄心４の中心の孔の内径を軸３の外径よりも大きくしてしまうと、軸３と固定子鉄心４との締結が困難となるため、固定子鉄心４の中心の孔の内径を軸３の外径と同じ寸法にする必要があった。 When the shaft 3 is directly inserted into the center of the stator core 4 and fixed, the inner diameter of the center hole of the stator core 4 for inserting the shaft 3 is larger than the outer diameter of the shaft 3. If this is done, it becomes difficult to fasten the shaft 3 and the stator core 4. Therefore, the inner diameter of the hole at the center of the stator core 4 needs to be the same as the outer diameter of the shaft 3.
　一方、回転電機１では、第１円盤部品５を用いて軸３と固定子鉄心４とを結合するため、固定子中心孔４ａの孔径を軸３の外径よりも大きな孔径とすることができ、固定子鉄心４の中心部に大きな空洞を設けることができるため、固定子鉄心４に使用される鉄心を削減することができる。 On the other hand, in the rotating electric machine 1, since the shaft 3 and the stator core 4 are connected using the first disk component 5, the hole diameter of the stator center hole 4 a can be made larger than the outer diameter of the shaft 3. Since a large cavity can be provided at the center of the stator core 4, the number of cores used for the stator core 4 can be reduced.
　図８は、図４に示す第１円盤部品５の一面上に回転電機１の駆動を補助する電気電子部品が実装された状態を示す斜視図である。図８では、第１円盤部品５の一面上に電気電子部品としてコンデンサ９と電子回路１０とが実装されている。図８に示すように第１円盤部品５の一面上に電気電子部品を実装することにより、固定子鉄心４の固定子中心孔４ａを、第１円盤部品５を用いて軸３と固定子鉄心４とを結合させる用途以外にも有効活用することができる。すなわち、図８に示すように第１円盤部品５の一面上に電気電子部品を実装することで、電気電子部品を回転電機１の外側に配置する場合と比べて、回転電機１の性能を損なうことなく、回転電機１の省スペース化および意匠性の向上を図ることができる。 FIG. 8 is a perspective view showing a state in which electric and electronic components for assisting driving of the rotary electric machine 1 are mounted on one surface of the first disk component 5 shown in FIG. 8, a capacitor 9 and an electronic circuit 10 are mounted on one surface of the first disk component 5 as electric and electronic components. As shown in FIG. 8, the electric and electronic components are mounted on one surface of the first disk component 5 so that the stator center hole 4 a of the stator core 4 is formed with the shaft 3 and the stator core using the first disk component 5. 4 can be effectively used for purposes other than the purpose of combining with FIG. That is, as shown in FIG. 8, by mounting the electric and electronic components on one surface of the first disk component 5, the performance of the rotary electric machine 1 is impaired as compared with a case where the electric and electronic components are arranged outside the rotary electric machine 1. Without this, it is possible to save space and improve design of the rotating electric machine 1.
　また、電気電子部品が回転電機１の第１外郭フレーム２ａと第２外郭フレーム２ｂの外部に配置される場合には、電気電子部品を保護する電気電子部品用の外郭が必要となり、回転電機１の構成が複雑になるとともに回転電機１が大型化してしまう。 Further, when the electric and electronic components are disposed outside the first outer frame 2a and the second outer frame 2b of the rotating electric machine 1, an outer shell for the electric and electronic components that protects the electric and electronic components is required. Is complicated, and the rotating electric machine 1 is enlarged.
　これに対して、回転電機１は、電気電子部品が固定子鉄心４の固定子中心孔４ａ内に収納されることで、電気電子部品が回転電機１の外郭を構成する第１外郭フレーム２ａと第２外郭フレーム２ｂとに覆われる構造とされている。これにより、回転電機１では、第１外郭フレーム２ａと第２外郭フレーム２ｂとが、電気電子部品を保護する電気電子部品の外郭の役割を兼ねており、電気電子部品用の外郭が不要であり、部品点数を削減することができる。また、電気電子部品用の外郭が無く、第１外郭フレーム２ａと第２外郭フレーム２ｂの形状および大きさは電気電子部品の影響を受けないため、電気電子部品に起因した回転電機１の形状の制約および大型化が防止されている。 On the other hand, in the rotating electric machine 1, the electric and electronic components are accommodated in the stator center hole 4 a of the stator core 4, so that the electric and electronic components correspond to the first outer frame 2 a forming the outer periphery of the rotating electric machine 1. It is structured to be covered with the second outer frame 2b. Thus, in the rotating electric machine 1, the first outer frame 2a and the second outer frame 2b also function as outer shells of the electric and electronic components for protecting the electric and electronic components, and the outer shell for the electric and electronic components is not required. Thus, the number of parts can be reduced. In addition, since there is no outer shell for electric and electronic components, 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 components, the shape of the rotating electric machine 1 caused by the electric and electronic components is reduced. Restrictions and enlargement are prevented.
　また、電気電子部品は固定子鉄心４の固定子中心孔４ａ内に収納されるため、回転子７等の回転物との接触することがなく、回転子７等の回転物との接触を回避するために外郭内部に大きな空間を設ける必要がなく、回転電機１の大型化、意匠性および施工性の悪化が生ることがない。 Further, since the electric and electronic components are accommodated in the stator center hole 4a of the stator core 4, there is no contact with a rotating object such as the rotor 7 and contact with the rotating object such as the rotor 7 is avoided. Therefore, there is no need to provide a large space inside the outer shell, so that the rotating electric machine 1 does not become large, and the design and the workability do not deteriorate.
　図９は、図８に示す固定子鉄心４の固定子中心孔４ａが全閉状態とされた状態を示す断面図である。図９では、図８に示す構成に対して円盤部品である第２円盤部品５ｅが追加され、固定子鉄心４の固定子中心孔４ａが第１円盤部品５と第２円盤部品５ｅとにより軸３の方向から塞がれて全閉状態とされた状態を示している。 FIG. 9 is a cross-sectional view showing a state where 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 formed by the first disk component 5 and the second disk component 5e. 3 shows a state in which it is closed from the direction 3 and is in a fully closed state.
　すなわち、固定子鉄心４の固定子中心孔４ａは、固定子鉄心４の一面４ｄ側が第１円盤部品５によって塞がれており、固定子鉄心４の他面４ｅ側が第２円盤部品５ｅによって塞がれている。これにより、固定子鉄心４の固定子中心孔４ａは、第１円盤部品５と第２円盤部品５ｅとによって、固定子中心孔４ａの中心軸方向の両側から塞がれて全閉状態とされている。第２円盤部品５ｅは、第１円盤部品５と同じ部品が用いられており、第１円盤部品５と同様に固定子鉄心４の固定子中心孔４ａに圧入固定またはカシメ固定される。 That is, the stator center hole 4a of the stator core 4 has one surface 4d side of the stator core 4 closed by the first disk component 5 and another surface 4e side of the stator core 4 closed by the second disk component 5e. Is peeling. As a result, the stator center hole 4a of the stator core 4 is closed by the first disc component 5 and the second disc component 5e from both sides of the center axis direction of the stator center hole 4a to be in a fully closed state. ing. The second disk component 5e uses the same component as the first disk component 5, and is press-fitted or crimped and fixed to the stator center hole 4a of the stator core 4 like the first disk component 5.
　このように、２つの円盤部品を用いて固定子鉄心４の固定子中心孔４ａを全閉状態とすることにより、固定子鉄心４の固定子中心孔４ａに収納された電気電子部品を完全に覆うことができ、回転電機１の輸送時および回転電機１の運転時に電気電子部品が移動および脱落することを防ぐことができる。すなわち、電気電子部品が保持された固定子中心孔４ａが複数の円盤部品により閉鎖され、電気電子部品が複数の円盤部品によって挟み込まれた状態とされることで、電気電子部品の脱落防止および位置ずれ防止が可能な構造とされている。 As described above, by completely closing the stator center hole 4a of the stator core 4 using the two disk components, the electric and electronic components housed in the stator center hole 4a of the stator core 4 can be completely removed. It is possible to prevent the electric and electronic components from moving and falling when the rotating electric machine 1 is transported and when the rotating electric machine 1 is operated. That is, the stator center hole 4a holding the electric and electronic components is closed by the plurality of disk components, and the electric and electronic components are sandwiched by the plurality of disk components, thereby preventing the electric and electronic components from falling off and preventing the position. It has a structure that can prevent displacement.
　また、第１円盤部品５と第２円盤部品５ｅとを同形状とすることにより、部品の共通化が可能であり、製造工程を簡略化することができる。なお、固定子中心孔４ａを塞ぐための複数の円盤部品は各々異なる形状であってもよい。 In addition, since the first disk component 5 and the second disk component 5e have the same shape, the components can be shared, and the manufacturing process can be simplified. The plurality of disk components for closing the stator center hole 4a may have different shapes.
　上述したように、本実施の形態１にかかる回転電機１は、電気電子部品を内蔵可能な固定子中心孔４ａが固定子鉄心４の中心部分に形成される。また、回転電機１は、固定子中心孔４ａに第１円盤部品５が固定され、軸３が第１円盤部品５に固定されることにより、第１円盤部品５を介して固定子鉄心４と軸３が結合される。そして、固定子中心孔４ａに固定された第１円盤部品５に電気電子部品が実装される。 As described above, in the rotating electric machine 1 according to the first embodiment, the stator center hole 4a in which electric and electronic components can be built is formed in the center portion of the stator core 4. In addition, the rotating electric machine 1 is configured such that 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 are interposed via the first disk component 5. Axis 3 is connected. Then, the electric and electronic components are mounted on the first disk component 5 fixed to the stator center hole 4a.
　このような回転電機１は、電気電子部品が固定子鉄心４の固定子中心孔４ａ内に収納されるため、回転電機の外郭を拡張することなく、電気電子部品を回転電機１の外郭の内部に収納することができる。また、回転電機１は、第１外郭フレーム２ａと第２外郭フレーム２ｂとが、電気電子部品を保護する電気電子部品の外郭の役割を兼ねており、電気電子部品用の外郭が不要であり、小型化を図るとともに外郭の部品点数と材料費とを削減することができる。 In such a rotating electric machine 1, since the electric and electronic components are housed in the stator center hole 4 a of the stator core 4, the electric and electronic components can be placed inside the outer periphery of the rotating electric machine 1 without expanding the outer periphery of the rotating electric machine 1. Can be stored. In the rotating electric machine 1, the first outer frame 2a and the second outer frame 2b also function as outer shells of the electric and electronic components that protect the electric and electronic components, and the outer shell for the electric and electronic components is not required. The size can be reduced and the number of parts in the outer shell and the material cost can be reduced.
　回転電機１は、軸３が固定子鉄心４の中心部分に直接挿通されて固定される場合と比べて、固定子鉄心４の重量が削減されることで回転電機１が軽量化されるため、固定子鉄心４の材料費の削減と回転電機１の施工性の向上が図れる。 Since the rotating electric machine 1 is reduced in weight by reducing the weight of the stator core 4 as compared with a case where the shaft 3 is directly inserted into the center portion of the stator core 4 and fixed, The material cost of the stator core 4 can be reduced and the workability of the rotating electric machine 1 can be improved.
　そして、固定子鉄心４において固定子中心孔４ａが形成される部分は、回転電機１を駆動するために電磁気的に不要な部分であるため、回転電機１の性能を低下させること無く上述した効果を得ることができる。 Since the portion of the stator core 4 where the stator center hole 4a is formed is an electromagnetically unnecessary portion for driving the rotating electric machine 1, the above-described effects can be obtained without deteriorating the performance of the rotating electric machine 1. Can be obtained.
　したがって、本実施の形態１にかかる回転電機１は、電気電子部品の収納に起因して外郭の部品点数が増加することがなく小型化が可能なアウターロータ型回転電機を実現可能である、という効果を奏する。 Therefore, the rotating electric machine 1 according to the first embodiment can realize an outer rotor type rotating electric machine which can be downsized without increasing the number of outer parts due to storage of electric and electronic components. It works.
実施の形態２．
　図１０は、本発明の実施の形態２にかかる天井扇風機１２０を示す側面図である。天井扇風機１２０は、実施の形態１にかかる回転電機１を製品に実装した例であり、実施の形態１にかかる回転電機１を備えている。製品の仕様上、回転電機１は電動機として利用される。実施の形態２では、上記の実施の形態１と同一の構成要素には同一の符号を付し、実施の形態１とは異なる構成について主に説明する。 Embodiment 2 FIG.
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 rotating electric machine 1 according to the first embodiment is mounted on a product, and includes the rotating electric machine 1 according to the first embodiment. The rotating electric machine 1 is used as a motor in terms of product specifications. In the second embodiment, the same components as those in the first embodiment are denoted by the same reference numerals, and a configuration different from the first embodiment will be mainly described.
　天井扇風機１２０は、天井から吊り下げられて設置される。天井扇風機１２０は、回転電機１と、回転電機１の駆動を受けて回転する複数の翼部５１とを備える。複数の翼部５１は、回転電機１と同軸の円周上に位置する。回転電機１と複数の翼部５１とは、天井扇風機１２０の本体を構成する。回転電機１の下側は、カバー５２によって覆われている。シャフト５３は、中空の棒である。シャフト５３は、天井扇風機１２０の本体を支持する。シャフト５３には、回転電機１を支持する支持軸である軸３が繋がれている。シャフト５３の上端は、固定部５４において天井に固定される。商用電源に接続された電源線は、天井からシャフト５３の内部を通されて、回転電機１の電源回路に接続されている。図９では、天井、商用電源および電源回路の図示を省略している。 The ceiling fan 120 is suspended from the ceiling and installed. The ceiling fan 120 includes the rotating electric machine 1 and a plurality of wings 51 that rotate by being driven by the rotating electric machine 1. The plurality of wing portions 51 are located on a circumference coaxial with the rotating electric machine 1. The rotating electric machine 1 and the plurality of wing portions 51 constitute a main body of the ceiling fan 120. The lower side of the rotating 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. The shaft 53, which is a support shaft that supports the rotating electric machine 1, is connected to the shaft 53. The upper end of the shaft 53 is fixed to the ceiling at the fixing part 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 rotating electric machine 1. In FIG. 9, illustration of a ceiling, a commercial power supply, and a power supply circuit is omitted.
　実施の形態２によると、天井扇風機１２０は、実施の形態１にかかる回転電機１を備えることで、小型化および軽量化が可能となり、製造コストの低減が可能となる。すなわち、回転電機１が小型化および軽量化が可能であるため、カバー５２およびシャフト５３も小型化および軽量化が可能となり、製造コストの低減が可能となる。 According to the second embodiment, by providing the rotary electric machine 1 according to the first embodiment, the ceiling fan 120 can be reduced in size and weight, and the manufacturing cost can be reduced. That is, since the rotating electric machine 1 can be reduced in size and weight, the cover 52 and the shaft 53 can also be reduced in size and weight, and the manufacturing cost can be reduced.
　以上の実施の形態に示した構成は、本発明の内容の一例を示すものであり、別の公知の技術と組み合わせることも可能であるし、本発明の要旨を逸脱しない範囲で、構成の一部を省略、変更することも可能である。 The configurations described in the above embodiments are merely examples of the contents of the present invention, and can be combined with other known technologies, and can be combined with other known technologies without departing from the gist of the present invention. Parts can be omitted or changed.
　１　アウターロータ型回転電機、２ａ　第１外郭フレーム、２ｂ　第２外郭フレーム、２ｃ　第１ハウジング、２ｄ　第２ハウジング、２ｅ　第１円筒部、２ｆ　第２円筒部、３　軸、３ａ　一端、４　固定子鉄心、４ａ　固定子中心孔、４ｂ　主巻線用スロット、４ｃ　補助巻線用スロット、４ｄ　一面、４ｅ　他面、５　第１円盤部品、５ａ　円盤中心孔、５ｂ　第１支持部、５ｃ　第２支持部、５ｄ　外周、５ｅ　第２円盤部品、６ａ　第１軸受、６ｂ　第２軸受、７　回転子、８ａ　主巻線、８ｂ　補助巻線、９　コンデンサ、１０　電子回路、５１　翼部、５２　カバー、５３　シャフト、５４　固定部、１２０　天井扇風機。 1 outer rotor type rotary electric machine, 2a first outer frame, 2b second outer frame, 2c first housing, 2d second housing, 2e first cylindrical portion, 2f second cylindrical portion, 3 axis, 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 portion, 5c second support Part, 5d outer circumference, 5e second disk component, 6a first bearing, 6b second bearing, 7 rotor, 8a main winding, 8b auxiliary winding, 9 capacitor, 10 electronic circuit, 51 wing, 52 cover, 53 Shaft, 54 fixed part, 120 ceiling fan.

Claims (5)

  1. 　円筒形状を有する回転子と、
    　前記回転子の中央に固定されて前記回転子の中心軸に沿って延びる軸と、
    　前記回転子を内部に収容する外郭と、
    　前記軸の外径よりも大きな内径を有する固定子中心孔が前記回転子の中心軸と同軸に形成されて、前記回転子の内側に配置される固定子鉄心と、
    　前記固定子中心孔内に前記回転子の中心軸と同軸に固定される円盤部品と、
    　前記円盤部品に保持される電気電子部品と、
    　を備えることを特徴とするアウターロータ型回転電機。     A rotor having a cylindrical shape,
    An axis fixed to the center of the rotor and extending along a central axis of the rotor;
    An outer shell for housing the rotor therein;
    A stator center hole having an inner diameter larger than the outer diameter of the shaft is formed coaxially with the center axis of the rotor, and a stator core disposed inside the rotor.
    A disk component fixed in the stator center hole coaxially with the center axis of the rotor;
    Electrical and electronic components held by the disk component,
    An outer rotor type rotating electric machine comprising:
  2. 　前記円盤部品は、前記回転子の中心軸と同軸に形成された円盤中心孔と、前記円盤中心孔の内周に沿って延びる第１支持部と、前記円盤部品の外周に沿って延びる第２支持部と、を備え、
    　前記軸は、前記円盤中心孔および前記第１支持部に圧入固定またはカシメ固定により固定されることで、前記円盤部品に固定されており、
    　前記円盤部品は、前記固定子中心孔に圧入固定またはカシメ固定により固定されることで、前記固定子鉄心に固定されていること、
    　を特徴とする請求項１に記載のアウターロータ型回転電機。     The disc component has a disc center hole formed coaxially with the center axis of the rotor, a first support portion extending along the inner periphery of the disc center hole, and a second support portion extending along the outer periphery of the disc component. And a support portion,
    The shaft is fixed to the disc component by press-fitting or crimping fixed to the disc center hole and the first support portion,
    The disk component is fixed to the stator core hole by being fixed to the stator center hole by press-fitting or caulking, so that the disk component is fixed to the stator core.
    The outer rotor type rotating electric machine according to claim 1, wherein:
  3. 　前記第１支持部は、前記軸の外径寸法と同じ内径寸法を有し、
    　前記第２支持部は、前記固定子中心孔の内径寸法と同じ外径寸法を有すること、
    　を特徴とする請求項２に記載のアウターロータ型回転電機。     The first support portion has the same inner diameter as the outer diameter of the shaft,
    The second support portion has the same outer diameter as the inner diameter of the stator center hole,
    The outer rotor type rotating electric machine according to claim 2, characterized in that:
  4. 　前記電気電子部品が保持された前記固定子中心孔が、複数の前記円盤部品により閉鎖されていること、
    　を特徴とする請求項１から３のいずれか１つに記載のアウターロータ型回転電機。     The stator center hole holding the electrical and electronic components is closed by a plurality of the disk components,
    The outer rotor type rotating electric machine according to any one of claims 1 to 3, characterized in that:
  5. 　請求項１から４のいずれか１つに記載のアウターロータ型回転電機と、
    　前記アウターロータ型回転電機の駆動を受けて回転する翼部と、
    　を備えることを特徴とする天井扇風機。     An outer rotor type rotating electric machine according to any one of claims 1 to 4,
    A wing portion that rotates under the drive of the outer rotor type rotating electric machine,
    A ceiling fan comprising:
PCT/JP2019/019782 2018-09-26 2019-05-17 Outer-rotor-type rotating electric machine and ceiling fan WO2020066117A1 (en)

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WO2023079844A1 (en) * 2021-11-05 2023-05-11 パナソニックＩｐマネジメント株式会社 Motor, blower, and vehicle

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JP2003018789A (en) * 2001-06-14 2003-01-17 Shunho Kyo Drum structure containing switching means in inner- stator part
JP2005204426A (en) * 2004-01-16 2005-07-28 Toyo Electric Mfg Co Ltd Distributed power supply generating set
JP2012010537A (en) * 2010-06-28 2012-01-12 Panasonic Corp Claw-pole type motor for ceiling fan
JP2015122834A (en) * 2013-12-20 2015-07-02 Ntn株式会社 Rotary electric machine
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Publication number Priority date Publication date Assignee Title
JP2002281722A (en) * 2001-03-22 2002-09-27 Matsushita Electric Ind Co Ltd Outer rotor motor and electric bicycle
JP2003018789A (en) * 2001-06-14 2003-01-17 Shunho Kyo Drum structure containing switching means in inner- stator part
JP2005204426A (en) * 2004-01-16 2005-07-28 Toyo Electric Mfg Co Ltd Distributed power supply generating set
JP2012010537A (en) * 2010-06-28 2012-01-12 Panasonic Corp Claw-pole type motor for ceiling fan
JP2015122834A (en) * 2013-12-20 2015-07-02 Ntn株式会社 Rotary electric machine
JP2016167898A (en) * 2014-04-21 2016-09-15 ヤマハ発動機株式会社 Synchronous drive motor

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023079844A1 (en) * 2021-11-05 2023-05-11 パナソニックＩｐマネジメント株式会社 Motor, blower, and vehicle

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