WO2020080728A1 - Ceiling fan motor - Google Patents

Ceiling fan motor Download PDF

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Publication number
WO2020080728A1
WO2020080728A1 PCT/KR2019/013204 KR2019013204W WO2020080728A1 WO 2020080728 A1 WO2020080728 A1 WO 2020080728A1 KR 2019013204 W KR2019013204 W KR 2019013204W WO 2020080728 A1 WO2020080728 A1 WO 2020080728A1
Authority
WO
WIPO (PCT)
Prior art keywords
step part
insertion groove
housing
ceiling fan
protruding
Prior art date
Application number
PCT/KR2019/013204
Other languages
French (fr)
Inventor
Jeong Cheol Jang
Seong Jung Ju
Guan Sik KIM
Min Seong Kim
Original Assignee
New Motech Co., Ltd.
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 New Motech Co., Ltd. filed Critical New Motech Co., Ltd.
Priority to CN201980047742.0A priority Critical patent/CN112425039A/en
Publication of WO2020080728A1 publication Critical patent/WO2020080728A1/en

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/22—Rotating parts of the magnetic circuit
    • H02K1/28—Means for mounting or fastening rotating magnetic parts on to, or to, the rotor structures
    • 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
    • F04D25/06—Units comprising pumps and their driving means the pump being electrically driven
    • F04D25/0606—Units comprising pumps and their driving means the pump being electrically driven the electric motor being specially adapted for integration in the pump
    • 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
    • F04D25/088—Ceiling fans
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/60—Mounting; Assembling; Disassembling
    • F04D29/64—Mounting; Assembling; Disassembling of axial pumps
    • F04D29/644—Mounting; Assembling; Disassembling of axial pumps especially adapted for elastic fluid pumps
    • F04D29/646—Mounting or removal of fans
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/22—Rotating parts of the magnetic circuit
    • H02K1/27—Rotor cores with permanent magnets
    • H02K1/2786—Outer rotors
    • H02K1/2787—Outer rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
    • H02K1/2789—Outer rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
    • H02K1/2791—Surface mounted magnets; Inset magnets
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/22—Rotating parts of the magnetic circuit
    • H02K1/28—Means for mounting or fastening rotating magnetic parts on to, or to, the rotor structures
    • H02K1/30—Means for mounting or fastening rotating magnetic parts on to, or to, the rotor structures using intermediate parts, e.g. spiders
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
    • H02K21/12—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
    • H02K21/14—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating within the armatures
    • H02K21/16—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating within the armatures having annular armature cores with salient poles
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • 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 a ceiling fan motor. More specifically, the present invention relates to a ceiling fan motor with a structure which facilitates the assembling of a rotor and stably supports a motor.
  • a ceiling fan motor is an electric apparatus mounted on an indoor ceiling to rotate a fan for air circulation.
  • the ceiling fan motor may be manufactured in structures of various forms, and normally includes a fixed stator assembly and a rotating rotor assembly installed with blades of the fan.
  • the ceiling fan motor rotates suspending from the ceiling, and thus it should have a structure that can bear the load of the motor and ceiling fan itself.
  • Conventional ceiling fan motors are disclosed in US Patent Publication No. 2012/0043843 and US Patent No. 7,157,872.
  • the conventional ceiling fan motors have a structure in which a rotor enclosing a stator that is fixed to the ceiling rotates, and the rotor includes a plurality of magnets installed on the inner wall of a rotor housing.
  • the rotor housing is normally made of metal, but may be made of a plastic resin in consideration of manufacturing costs or assemblability.
  • Korean Patent No. 10-1629829 manufactures a rotor housing with a plastic material by injection molding.
  • the rotor housing which is an injection molded product, may vibrate upon rotation due to poor assembly quality.
  • each magnet should be installed on the rotor housing separately, which decreases assemblability.
  • the present inventors suggest a ceiling fan motor having a novel structure.
  • the ceiling fan motor comprises: an upper housing 11 having a shaft through-hole 111 in a center and an upper step part insertion groove 113 around a lower circumference; a lower housing 12 having a lower step part insertion groove 122 around an upper circumference; a yoke assembly 20 including a ring yoke 21 having a ring shape and a plurality of magnets 22 attached to an inside of the ring yoke 21; and a stator assembly 30 including a stator core 31 and a hollow shaft 34 passing through the shaft through-hole 111 to be coupled to a shaft coupling part 31A formed in a center of the stator core 31, wherein an upper step part 211 protruding upwardly from the magnet 22 of the ring yoke 21 is coupled to the upper step part insertion groove 113, and a lower step part 213 protruding downwardly from the magnet 22 of the ring yoke 21 is coupled to the lower step part insertion groove 122.
  • the ceiling fan motor may further comprise a plurality of upper protruding parts 212 protruding upwardly from the upper step part 211, wherein the upper protruding part 212 is coupled to an upper protruding part insertion groove 114 formed in the upper step part insertion groove 113.
  • the ceiling fan motor may further comprise a plurality of lower protruding parts 214 protruding downwardly from the lower step part 213, wherein the lower protruding part 214 is coupled to a lower protruding part insertion groove 123 formed in the lower step part insertion groove 122.
  • a plurality of upper coupling members 11A is installed around the upper housing 11 by an insert injection molding, and a lower coupling member 12A is installed in the lower housing 12 at a position corresponding to the upper coupling member 11A by an insert injection molding.
  • a fan coupling hole 11C for coupling a blade of the ceiling fan may be formed in the upper coupling member 11A.
  • the present invention provides a ceiling fan motor having a firm coupling structure of a housing, thereby ensuring more stable operation when operating a motor and improving assemblability of the housing, and facilitating the assembling of magnets.
  • Fig. 1 is a perspective view illustrating a ceiling fan motor according to the present invention
  • Fig. 2 is an exploded perspective view illustrating a ceiling fan motor according to the present invention
  • Fig. 3 is a perspective view illustrating a yoke assembly of the ceiling fan motor according to the present invention
  • Fig. 4 is an exploded perspective view illustrating an upper housing and a yoke assembly of the ceiling fan motor according to the present invention
  • Fig. 5 is an exploded perspective view illustrating a lower housing and a yoke assembly of the ceiling fan motor according to the present invention.
  • Fig. 6 is a perspective view illustrating the coupling state between the lower housing and the yoke assembly of the ceiling fan motor according to the present invention.
  • Fig. 1 is a perspective view illustrating the ceiling fan motor 100 according to the present invention
  • Fig. 2 is an exploded perspective view illustrating the ceiling fan motor 100 according to the present invention.
  • the ceiling fan motor 100 according to the present invention includes a housing assembly 10, a yoke assembly 20, and a stator assembly 30.
  • the housing assembly 10 includes an upper housing 11 and a lower housing 12 which are coupled to each other.
  • An upper bearing holder 13 is installed in a center inside the upper housing 11, and a lower bearing holder 14 is installed in a center inside the lower housing 12.
  • An upper bearing 15 is coupled to the upper bearing holder 13, and a lower bearing 16 is coupled to the lower bearing holder 14.
  • a plurality of upper coupling members 11A is installed around the upper housing 11, and a lower coupling member 12A is installed in the lower housing 12 at a position corresponding to the upper coupling member 11A.
  • Three upper coupling members 11A are illustrated, but the number thereof is not necessarily limited thereto. Four or more upper coupling members 11A may be installed according to need.
  • the yoke assembly 20 includes a ring yoke 21, which is a magnetic substance, and a plurality of magnets 22 attached to the inner circumferential surface of the ring yoke 21.
  • the number of magnets 22 is not particularly limited, and various numbers of magnets 22 may be used depending on the number of poles of the motor.
  • the yoke assembly 20 is coupled to the inner circumferential surfaces of the upper housing 11 and the lower housing 12.
  • the stator assembly 30 includes a stator core 31, an upper insulator 32 and a lower insulator 33 coupled to an upper portion and a lower portion of the stator core 31, respectively, and a hollow shaft 34 coupled to a shaft coupling part 31A in a center of the stator core 31 and fixed to the ceiling.
  • a lead wire (not illustrated) for supplying power to the stator core 31 is drawn out to the outside through an inner space of the hollow shaft 34.
  • the housing assembly 10 rotates by a rotational force applied to the yoke assembly 20 which is caused by an electromagnetic field generated when the power is supplied to the stator assembly 30 fixed.
  • a blade (not illustrated) of the ceiling fan is coupled to the housing assembly 10 to rotate the fan, so that indoor air is circulated.
  • Fig. 3 is a perspective view illustrating the yoke assembly 20 of the ceiling fan motor 100 according to the present invention.
  • the yoke assembly 20 of the present invention includes a ring yoke 21 and a plurality of magnets 22 attached to the inner circumferential surface of the ring yoke 21.
  • the ring yoke 21 is manufactured by bending a magnetic substance of an elongated rectangular strip, to have a ring shape by forming a part having a protrusion and groove shape at both ends of the rectangular strip and coupling the ends to each other.
  • the part having the protrusion and groove shape is referred to as an end coupling part 21A.
  • a plurality of magnets 22 is attached to the inner circumferential surface of the ring yoke 21.
  • the magnet 22 is configured to have a height smaller than that of the ring yoke 21, such that the ring yoke 21 is stepped from the magnet 22 in the upper portion and lower portion of the magnet 22.
  • the part of the ring yoke 21 protruding upwardly is an upper step part 211, and the part protruding downwardly is a lower step part 213.
  • the upper step part 211 is coupled to an upper step part insertion groove 113 of the upper housing 11, and the lower step part 213 is coupled to a lower step part insertion groove 122 of the lower housing 12.
  • a plurality of upper protruding parts 212 protruding upwardly is provided in an upper portion of the upper step part 211, and a plurality of lower protruding parts 214 protruding downwardly is provided in a lower portion of the lower step part 213.
  • the upper protruding part 212 and the lower protruding part 214 may help the yoke assembly 20 settle in an exact position when the yoke assembly 20 is coupled to the upper housing 11 and the lower housing 12, respectively, and may also reinforce a coupling force between the yoke assembly 20 and the upper housing 11 and lower housing 12.
  • Fig. 4 is an exploded perspective view illustrating the upper housing 11 and the yoke assembly 20 of the ceiling fan motor 100 according to the present invention
  • Fig. 5 is an exploded perspective view illustrating the lower housing 12 and the yoke assembly 20 of the ceiling fan motor 100 according to the present invention
  • Fig. 6 is a perspective view illustrating the coupling state between the lower housing 12 and the yoke assembly 20 of the ceiling fan motor 100 according to the present invention.
  • the ceiling fan motor 100 has a structure in which the yoke assembly 20 is coupled to the upper housing 11 and the lower housing 12.
  • a shaft through-hole 111 through which a hollow shaft 34 passes is formed in a center inside the upper housing 11, and an upper bearing insertion part 112 protruding downwardly is formed around the shaft through-hole 111.
  • An upper bearing holder 13 is installed in the upper bearing insertion part 112.
  • the upper housing 11 may be molded such that the upper bearing holder 13 is installed in the upper bearing insertion part 112, if the upper housing 11 is manufactured by an insert injection molding in the state where the upper bearing holder 13 is located in a mold.
  • An upper step part insertion groove 113 to which an upper step part 211 in the ring yoke 21 is coupled is formed around a circumference inside the upper housing 11, and an upper protruding part insertion groove 114 is formed in the upper step part insertion groove 113 at a position corresponding to an upper protruding part 212 of the ring yoke 21.
  • the upper side of the yoke assembly 20 is coupled with the upper housing 11 by coupling the upper step part 211 and the upper protruding part 212 of the ring yoke 21 to the upper step part insertion groove 113 and the upper protruding part insertion groove 114 of the upper housing 11, respectively.
  • a plurality of upper coupling members 11A is installed around the lower circumference of the upper housing 11.
  • An upper coupling hole 11B into which a bolt (not illustrated) for coupling the upper housing 11 and the lower housing 12 is inserted is formed in the upper coupling member 11A.
  • a fan coupling hole 11C for coupling a blade of the ceiling fan is formed in the upper coupling member 11A.
  • the upper housing 11 may be molded such that the upper coupling member 11A is installed in the upper housing 11, if the upper housing 11 is manufactured by an insert injection molding in the state where the upper coupling member 11A is located in a mold.
  • a lower bearing insertion part 121 protruding upwardly is formed in a center inside the lower housing 12.
  • a lower bearing holder 14 is installed in the lower bearing insertion part 112.
  • the lower housing 12 may be molded such that the lower bearing holder 14 is installed in the lower bearing insertion part 121, if the lower housing 12 is manufactured by an insert injection molding in the state where the lower bearing holder 14 is located in a mold.
  • a lower step part insertion groove 122 to which a lower step part 213 in the ring yoke 21 is coupled is formed around a circumference inside the lower housing 12, and a lower protruding part insertion groove 123 is formed in the lower step part insertion groove 122 at a position corresponding to a lower protruding part 214 of the ring yoke 21.
  • the lower side of the yoke assembly 20 is coupled with the lower housing 12 by coupling the lower step part 213 and the lower protruding part 214 of the ring yoke 21 to the lower step part insertion groove 122 and the lower protruding part insertion groove 123 of the lower housing 12, respectively.
  • a plurality of lower coupling members 12A is installed around the upper circumference of the lower housing 12.
  • a lower coupling hole 12B is formed in the lower coupling member 12A at a position corresponding to the upper coupling hole 11B, in order to couple a bolt (not illustrated) for coupling the upper housing 11 and the lower housing 12.
  • the lower housing 12 may be molded such that the lower coupling member 12A is installed in the lower housing 12, if the lower housing 12 is manufactured by an insert injection molding in the state where the lower coupling member 12A is located in a mold.

Abstract

The ceiling fan motor according to the present invention comprises: an upper housing 11 having a shaft through-hole 111 in a center and an upper step part insertion groove 113 around a lower circumference; a lower housing 12 having a lower step part insertion groove 122 around an upper circumference; a yoke assembly 20 including a ring yoke 21 having a ring shape and a plurality of magnets 22 attached to an inside of the ring yoke 21; and a stator assembly 30 including a stator core 31 and a hollow shaft 34 passing through the shaft through-hole 111 to be coupled to a shaft coupling part 31A formed in a center of the stator core 31, wherein an upper step part 211 protruding upwardly from the magnet 22 of the ring yoke 21 is coupled to the upper step part insertion groove 113, and a lower step part 213 protruding downwardly from the magnet 22 of the ring yoke 21 is coupled to the lower step part insertion groove 122.

Description

CEILING FAN MOTOR
The present invention relates to a ceiling fan motor. More specifically, the present invention relates to a ceiling fan motor with a structure which facilitates the assembling of a rotor and stably supports a motor.
In general, a ceiling fan motor is an electric apparatus mounted on an indoor ceiling to rotate a fan for air circulation. The ceiling fan motor may be manufactured in structures of various forms, and normally includes a fixed stator assembly and a rotating rotor assembly installed with blades of the fan.
The ceiling fan motor rotates suspending from the ceiling, and thus it should have a structure that can bear the load of the motor and ceiling fan itself. Conventional ceiling fan motors are disclosed in US Patent Publication No. 2012/0043843 and US Patent No. 7,157,872. The conventional ceiling fan motors have a structure in which a rotor enclosing a stator that is fixed to the ceiling rotates, and the rotor includes a plurality of magnets installed on the inner wall of a rotor housing. The rotor housing is normally made of metal, but may be made of a plastic resin in consideration of manufacturing costs or assemblability.
Korean Patent No. 10-1629829 manufactures a rotor housing with a plastic material by injection molding. However, the rotor housing, which is an injection molded product, may vibrate upon rotation due to poor assembly quality. Further, each magnet should be installed on the rotor housing separately, which decreases assemblability.
In order to solve the above-mentioned problems, the present inventors suggest a ceiling fan motor having a novel structure.
It is an object of the present invention to provide a ceiling fan motor having a firm coupling structure of a housing, thereby ensuring more stable operation when operating a motor and improving assemblability.
It is another object of the present invention to provide a ceiling fan motor facilitating the assembling of magnets.
The objects above and other objects inferred therein can be easily achieved by the present invention explained below.
The ceiling fan motor according to the present invention comprises: an upper housing 11 having a shaft through-hole 111 in a center and an upper step part insertion groove 113 around a lower circumference; a lower housing 12 having a lower step part insertion groove 122 around an upper circumference; a yoke assembly 20 including a ring yoke 21 having a ring shape and a plurality of magnets 22 attached to an inside of the ring yoke 21; and a stator assembly 30 including a stator core 31 and a hollow shaft 34 passing through the shaft through-hole 111 to be coupled to a shaft coupling part 31A formed in a center of the stator core 31, wherein an upper step part 211 protruding upwardly from the magnet 22 of the ring yoke 21 is coupled to the upper step part insertion groove 113, and a lower step part 213 protruding downwardly from the magnet 22 of the ring yoke 21 is coupled to the lower step part insertion groove 122.
In the present invention, the ceiling fan motor may further comprise a plurality of upper protruding parts 212 protruding upwardly from the upper step part 211, wherein the upper protruding part 212 is coupled to an upper protruding part insertion groove 114 formed in the upper step part insertion groove 113.
In the present invention, the ceiling fan motor may further comprise a plurality of lower protruding parts 214 protruding downwardly from the lower step part 213, wherein the lower protruding part 214 is coupled to a lower protruding part insertion groove 123 formed in the lower step part insertion groove 122.
In the present invention, preferably, a plurality of upper coupling members 11A is installed around the upper housing 11 by an insert injection molding, and a lower coupling member 12A is installed in the lower housing 12 at a position corresponding to the upper coupling member 11A by an insert injection molding.
In the present invention, a fan coupling hole 11C for coupling a blade of the ceiling fan may be formed in the upper coupling member 11A.
The present invention provides a ceiling fan motor having a firm coupling structure of a housing, thereby ensuring more stable operation when operating a motor and improving assemblability of the housing, and facilitating the assembling of magnets.
Fig. 1 is a perspective view illustrating a ceiling fan motor according to the present invention;
Fig. 2 is an exploded perspective view illustrating a ceiling fan motor according to the present invention;
Fig. 3 is a perspective view illustrating a yoke assembly of the ceiling fan motor according to the present invention;
Fig. 4 is an exploded perspective view illustrating an upper housing and a yoke assembly of the ceiling fan motor according to the present invention;
Fig. 5 is an exploded perspective view illustrating a lower housing and a yoke assembly of the ceiling fan motor according to the present invention; and
Fig. 6 is a perspective view illustrating the coupling state between the lower housing and the yoke assembly of the ceiling fan motor according to the present invention.
Hereinafter, the present invention will be explained in detail with reference to the accompanying drawings.
Fig. 1 is a perspective view illustrating the ceiling fan motor 100 according to the present invention, and Fig. 2 is an exploded perspective view illustrating the ceiling fan motor 100 according to the present invention. As illustrated in Fig. 1 and Fig. 2, the ceiling fan motor 100 according to the present invention includes a housing assembly 10, a yoke assembly 20, and a stator assembly 30.
The housing assembly 10 includes an upper housing 11 and a lower housing 12 which are coupled to each other. An upper bearing holder 13 is installed in a center inside the upper housing 11, and a lower bearing holder 14 is installed in a center inside the lower housing 12. An upper bearing 15 is coupled to the upper bearing holder 13, and a lower bearing 16 is coupled to the lower bearing holder 14. A plurality of upper coupling members 11A is installed around the upper housing 11, and a lower coupling member 12A is installed in the lower housing 12 at a position corresponding to the upper coupling member 11A. Three upper coupling members 11A are illustrated, but the number thereof is not necessarily limited thereto. Four or more upper coupling members 11A may be installed according to need.
The yoke assembly 20 includes a ring yoke 21, which is a magnetic substance, and a plurality of magnets 22 attached to the inner circumferential surface of the ring yoke 21. The number of magnets 22 is not particularly limited, and various numbers of magnets 22 may be used depending on the number of poles of the motor. The yoke assembly 20 is coupled to the inner circumferential surfaces of the upper housing 11 and the lower housing 12.
The stator assembly 30 includes a stator core 31, an upper insulator 32 and a lower insulator 33 coupled to an upper portion and a lower portion of the stator core 31, respectively, and a hollow shaft 34 coupled to a shaft coupling part 31A in a center of the stator core 31 and fixed to the ceiling. A lead wire (not illustrated) for supplying power to the stator core 31 is drawn out to the outside through an inner space of the hollow shaft 34. The housing assembly 10 rotates by a rotational force applied to the yoke assembly 20 which is caused by an electromagnetic field generated when the power is supplied to the stator assembly 30 fixed. A blade (not illustrated) of the ceiling fan is coupled to the housing assembly 10 to rotate the fan, so that indoor air is circulated.
Fig. 3 is a perspective view illustrating the yoke assembly 20 of the ceiling fan motor 100 according to the present invention. Referring to Fig. 3, the yoke assembly 20 of the present invention includes a ring yoke 21 and a plurality of magnets 22 attached to the inner circumferential surface of the ring yoke 21.
The ring yoke 21 is manufactured by bending a magnetic substance of an elongated rectangular strip, to have a ring shape by forming a part having a protrusion and groove shape at both ends of the rectangular strip and coupling the ends to each other. The part having the protrusion and groove shape is referred to as an end coupling part 21A. A plurality of magnets 22 is attached to the inner circumferential surface of the ring yoke 21. The magnet 22 is configured to have a height smaller than that of the ring yoke 21, such that the ring yoke 21 is stepped from the magnet 22 in the upper portion and lower portion of the magnet 22.
As to the height of the magnet 22, the part of the ring yoke 21 protruding upwardly is an upper step part 211, and the part protruding downwardly is a lower step part 213. The upper step part 211 is coupled to an upper step part insertion groove 113 of the upper housing 11, and the lower step part 213 is coupled to a lower step part insertion groove 122 of the lower housing 12.
A plurality of upper protruding parts 212 protruding upwardly is provided in an upper portion of the upper step part 211, and a plurality of lower protruding parts 214 protruding downwardly is provided in a lower portion of the lower step part 213. The upper protruding part 212 and the lower protruding part 214 may help the yoke assembly 20 settle in an exact position when the yoke assembly 20 is coupled to the upper housing 11 and the lower housing 12, respectively, and may also reinforce a coupling force between the yoke assembly 20 and the upper housing 11 and lower housing 12.
Fig. 4 is an exploded perspective view illustrating the upper housing 11 and the yoke assembly 20 of the ceiling fan motor 100 according to the present invention, Fig. 5 is an exploded perspective view illustrating the lower housing 12 and the yoke assembly 20 of the ceiling fan motor 100 according to the present invention, and Fig. 6 is a perspective view illustrating the coupling state between the lower housing 12 and the yoke assembly 20 of the ceiling fan motor 100 according to the present invention.
Referring to Fig. 4 to Fig. 6 together, the ceiling fan motor 100 according to the present invention has a structure in which the yoke assembly 20 is coupled to the upper housing 11 and the lower housing 12. A shaft through-hole 111 through which a hollow shaft 34 passes is formed in a center inside the upper housing 11, and an upper bearing insertion part 112 protruding downwardly is formed around the shaft through-hole 111. An upper bearing holder 13 is installed in the upper bearing insertion part 112. Preferably, the upper housing 11 may be molded such that the upper bearing holder 13 is installed in the upper bearing insertion part 112, if the upper housing 11 is manufactured by an insert injection molding in the state where the upper bearing holder 13 is located in a mold.
An upper step part insertion groove 113 to which an upper step part 211 in the ring yoke 21 is coupled is formed around a circumference inside the upper housing 11, and an upper protruding part insertion groove 114 is formed in the upper step part insertion groove 113 at a position corresponding to an upper protruding part 212 of the ring yoke 21. The upper side of the yoke assembly 20 is coupled with the upper housing 11 by coupling the upper step part 211 and the upper protruding part 212 of the ring yoke 21 to the upper step part insertion groove 113 and the upper protruding part insertion groove 114 of the upper housing 11, respectively.
A plurality of upper coupling members 11A is installed around the lower circumference of the upper housing 11. An upper coupling hole 11B into which a bolt (not illustrated) for coupling the upper housing 11 and the lower housing 12 is inserted is formed in the upper coupling member 11A. Further, a fan coupling hole 11C for coupling a blade of the ceiling fan is formed in the upper coupling member 11A. Preferably, the upper housing 11 may be molded such that the upper coupling member 11A is installed in the upper housing 11, if the upper housing 11 is manufactured by an insert injection molding in the state where the upper coupling member 11A is located in a mold.
A lower bearing insertion part 121 protruding upwardly is formed in a center inside the lower housing 12. A lower bearing holder 14 is installed in the lower bearing insertion part 112. Preferably, the lower housing 12 may be molded such that the lower bearing holder 14 is installed in the lower bearing insertion part 121, if the lower housing 12 is manufactured by an insert injection molding in the state where the lower bearing holder 14 is located in a mold.
A lower step part insertion groove 122 to which a lower step part 213 in the ring yoke 21 is coupled is formed around a circumference inside the lower housing 12, and a lower protruding part insertion groove 123 is formed in the lower step part insertion groove 122 at a position corresponding to a lower protruding part 214 of the ring yoke 21. The lower side of the yoke assembly 20 is coupled with the lower housing 12 by coupling the lower step part 213 and the lower protruding part 214 of the ring yoke 21 to the lower step part insertion groove 122 and the lower protruding part insertion groove 123 of the lower housing 12, respectively.
A plurality of lower coupling members 12A is installed around the upper circumference of the lower housing 12. A lower coupling hole 12B is formed in the lower coupling member 12A at a position corresponding to the upper coupling hole 11B, in order to couple a bolt (not illustrated) for coupling the upper housing 11 and the lower housing 12. Preferably, the lower housing 12 may be molded such that the lower coupling member 12A is installed in the lower housing 12, if the lower housing 12 is manufactured by an insert injection molding in the state where the lower coupling member 12A is located in a mold.
The detailed description of the present invention described as above simply explains examples for understanding the present invention, but does not intend to limit the scope of the present invention. The scope of the present invention is defined by the accompanying claims. Additionally, it should be construed that simple modifications or changes of the present invention fall within the scope of the present invention.

Claims (5)

  1. A ceiling fan motor comprising:
    an upper housing 11 having a shaft through-hole 111 in a center and an upper step part insertion groove 113 around a lower circumference;
    a lower housing 12 having a lower step part insertion groove 122 around an upper circumference;
    a yoke assembly 20 including a ring yoke 21 having a ring shape and a plurality of magnets 22 attached to an inside of the ring yoke 21; and
    a stator assembly 30 including a stator core 31 and a hollow shaft 34 passing through the shaft through-hole 111 to be coupled to a shaft coupling part 31A formed in a center of the stator core 31,
    wherein an upper step part 211 protruding upwardly from the magnet 22 of the ring yoke 21 is coupled to the upper step part insertion groove 113, and a lower step part 213 protruding downwardly from the magnet 22 of the ring yoke 21 is coupled to the lower step part insertion groove 122.
  2. The ceiling fan motor of claim 1, further comprising a plurality of upper protruding parts 212 protruding upwardly from the upper step part 211, wherein the upper protruding part 212 is coupled to an upper protruding part insertion groove 114 formed in the upper step part insertion groove 113.
  3. The ceiling fan motor of claim 1, further comprising a plurality of lower protruding parts 214 protruding downwardly from the lower step part 213, wherein the lower protruding part 214 is coupled to a lower protruding part insertion groove 123 formed in the lower step part insertion groove 122.
  4. The ceiling fan motor of claim 1, wherein a plurality of upper coupling members 11A is installed around the upper housing 11 by an insert injection molding, and a lower coupling member 12A is installed in the lower housing 12 at a position corresponding to the upper coupling member 11A by an insert injection molding.
  5. The ceiling fan motor of claim 4, wherein a fan coupling hole 11C for coupling a blade of the ceiling fan is formed in the upper coupling member 11A.
PCT/KR2019/013204 2018-10-17 2019-10-08 Ceiling fan motor WO2020080728A1 (en)

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KR1020180123969A KR102030088B1 (en) 2018-10-17 2018-10-17 Ceiling Fan Motor
KR10-2018-0123969 2018-10-17

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080012439A1 (en) * 2006-07-11 2008-01-17 Zhongshan Broad-Ocean Motor Co., Ltd. Ceiling fan motor
CN105006902A (en) * 2015-07-07 2015-10-28 广东福耐特电气有限公司 Ceiling fan motor
CN205123429U (en) * 2015-11-13 2016-03-30 江门东骏电器有限公司 Ceiling fan motor structure
KR101629829B1 (en) * 2014-12-15 2016-06-13 뉴모텍(주) Ceiling Fan Motor
KR20170113131A (en) * 2016-03-24 2017-10-12 존슨 일렉트릭 에스.에이. Cooling fan and air-cooled refrigerator comprising same

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN204761182U (en) * 2015-06-30 2015-11-11 广东美的环境电器制造有限公司 A direct current motor and ceiling fan for ceiling fan
CN204992877U (en) * 2015-07-01 2016-01-20 广东美的环境电器制造有限公司 A ceiling fan that is used for motor of ceiling fan and has it
JP2017044168A (en) * 2015-08-27 2017-03-02 ミネベア株式会社 Attaching structure of impeller, and centrifugal fan using the same
CN207573108U (en) * 2017-12-12 2018-07-03 江门市胜思特电器有限公司 A kind of novel ceiling fan rotor structure

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080012439A1 (en) * 2006-07-11 2008-01-17 Zhongshan Broad-Ocean Motor Co., Ltd. Ceiling fan motor
KR101629829B1 (en) * 2014-12-15 2016-06-13 뉴모텍(주) Ceiling Fan Motor
CN105006902A (en) * 2015-07-07 2015-10-28 广东福耐特电气有限公司 Ceiling fan motor
CN205123429U (en) * 2015-11-13 2016-03-30 江门东骏电器有限公司 Ceiling fan motor structure
KR20170113131A (en) * 2016-03-24 2017-10-12 존슨 일렉트릭 에스.에이. Cooling fan and air-cooled refrigerator comprising same

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KR102030088B1 (en) 2019-10-08

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