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WO2024214967A1 - Ceiling fan motor with vibration proof - Google Patents

Ceiling fan motor with vibration proof Download PDF

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Publication number
WO2024214967A1
WO2024214967A1 PCT/KR2024/003253 KR2024003253W WO2024214967A1 WO 2024214967 A1 WO2024214967 A1 WO 2024214967A1 KR 2024003253 W KR2024003253 W KR 2024003253W WO 2024214967 A1 WO2024214967 A1 WO 2024214967A1
Authority
WO
WIPO (PCT)
Prior art keywords
bracket
ceiling
motor
absorbing member
vibration absorbing
Prior art date
Application number
PCT/KR2024/003253
Other languages
French (fr)
Inventor
Jeong Cheol Jang
Nam Youn Kim
Jin Ho Yang
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.
Publication of WO2024214967A1 publication Critical patent/WO2024214967A1/en

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Classifications

    • 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
    • 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
    • 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
    • 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
    • H02K21/22—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating around the armatures, e.g. flywheel magnetos
    • 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
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
    • H02K5/173—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings
    • H02K5/1737—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings radially supporting the rotor around a fixed spindle; radially supporting the rotor directly
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/24—Casings; Enclosures; Supports specially adapted for suppression or reduction of noise or vibrations
    • 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
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K2205/00—Specific aspects not provided for in the other groups of this subclass relating to casings, enclosures, supports
    • H02K2205/12—Machines characterised by means for reducing windage losses or windage noise

Definitions

  • the present invention relates to a ceiling fan motor with vibration proof. More specifically, the present invention relates to a ceiling fan motor with vibration proof capable of absorbing vibration generated from the ceiling and self-vibration generated when driving a motor, thereby providing a motor with excellent noise reducing efficiency.
  • a ceiling fan motor is an electrical device installed on the ceiling of a room to rotate a fan for air circulation.
  • the ceiling fan motors are manufactured in various types of structures.
  • U.S. Patent No. 7,249,744 discloses a structure for assembling an upper canopy and a lower canopy by coupling the upper canopy and the lower canopy of different structures covering and protecting the outer periphery of a ceiling bracket using coupling bolts.
  • the ceiling fan motor in which an upper canopy and a lower canopy are assembled using coupling bolts as above is installed to hang from a lower part of a slab by coupling coupling bolts to the slab configuring the ceiling inside a building.
  • the vibration generated from a bottom surface of an upper part of the slab is directly transmitted to the ceiling fan motor, which not only generates noise when the blade rotates, but also tends to loosen the coupling bolts coupled to the slab due to the vibration, thereby disallowing a stable coupling and reducing reliability of the ceiling fan motor.
  • the present inventors suggest a ceiling fan motor with vibration proof with a new structure in order to solve the above problems.
  • a ceiling fan motor with vibration proof comprises: a ceiling bracket 10; a motor bracket 20 fittedly coupled to both ends of the inner side the ceiling bracket 10; a motor assembly 30 coupled to the ceiling bracket 10 to rotate a blade 60; a first vibration absorbing member 100 made of rubber having a cushioning function, fittedly fixed and installed in an annular fitting protrusion piece 11 formed by punching upwardly along an upper periphery of the ceiling bracket 10, to absorb vibration generated from the ceiling; and a second vibration absorbing member 200 made of rubber having a cushioning function, arranged between an inner lower surface of the ceiling bracket 10 and the motor bracket 20, to absorb self-vibration generated when driving a motor.
  • annular fitting guide groove 111 formed in a lower part of the first vibration absorbing member 100 is fittedly coupled to an annular fitting protrusion piece 11 of the ceiling bracket 10, a plurality of first noise absorbing holes 112 are inwardly formed on an upper part of the first vibration absorbing member 100, and an upper surface of the first vibration absorbing member 100 is in surface contact with a lower surface of the ceiling slab S.
  • a first coupling hole 12 formed at both ends of the ceiling bracket 10 and a second coupling hole 22 formed in a curved part 21 at both sides of the motor bracket 20 are in surface contact with each other and coupled by a first coupling bolt B1, and a positioning protrusion piece 23 outwardly protruding from the curved part 21 at both sides of the motor bracket 20 is fittedly coupled to a positioning cut groove 13 having both ends of the ceiling bracket 10 cut.
  • a reinforcing rib 25 protruding in the center of the inner side of the curved part 21 at both sides of the motor bracket 20 is guidedly coupled to a reinforcing rib guide fitting groove 212A formed in the center of the support part 212 of the second vibration absorbing member 200, and a bolt reinforcing protrusion 26 inwardly protruding at both ends of the inner side of the curved part 21 at both sides of the motor bracket 20 is guidedly coupled to a bolt reinforcing protrusion guide fitting groove 212B formed at both ends of the reinforcing rib guide fitting groove 212A.
  • a plurality of second noise absorbing holes 214 are formed inside an upper part of the second vibration absorbing member 200, a guide groove 215 into which the head of the second coupling bolt B2 is guided and fit is formed radially in a position corresponding to a third coupling hole 14 formed in the ceiling bracket 10, and an oval-shaped vibration absorbing air hole 216 is formed at both sides of the inner center of the second vibration absorbing member 200.
  • the present invention has an effect of greatly improving the vibration absorbing efficiency by stably coupling the second vibration absorbing member to the motor bracket.
  • the present invention has an effect of improving the productivity of the ceiling fan motor by enabling quick assembly of the motor bracket and the ceiling bracket.
  • Fig. 1 is a perspective view of an overall appearance of an embodiment of a ceiling fan motor according to the present invention
  • Fig. 2 is an exploded top perspective view of excerpted main parts of a ceiling fan motor according to the present invention
  • Fig. 3 is an exploded bottom perspective view of excerpted main parts of a ceiling fan motor according to the present invention.
  • Fig. 4 is a perspective cut-away view of an embodiment of a ceiling fan motor according to the present invention.
  • Fig. 5 is a longitudinal cross-sectional view of an embodiment of a ceiling fan motor according to the present invention.
  • Fig. 1 is a perspective view of an overall appearance of an embodiment of a ceiling fan motor according to the present invention.
  • Fig. 2 is an exploded top perspective view of excerpted main parts of a ceiling fan motor according to the present invention.
  • Fig. 3 is an exploded bottom perspective view of excerpted main parts of a ceiling fan motor according to the present invention.
  • Fig. 4 is a perspective cut-away view of an embodiment of a ceiling fan motor according to the present invention.
  • Fig. 5 is a longitudinal cross-sectional view of an embodiment of a ceiling fan motor according to the present invention.
  • a ceiling fan motor M comprises: a ceiling bracket 10; a motor bracket 20 fittedly coupled inside the ceiling bracket 10; a motor assembly 30 having a hollow shaft 31 fittedly coupled to the motor bracket 20; upper and lower bearing covers 40; a printed circuit board 50; a blade 60; and an upper canopy 70 and a lower canopy 80 covering and protecting the outer periphery of the ceiling bracket 10, the motor bracket 20 and the motor assembly 30, respectively.
  • the ceiling bracket 10 is a bracket suspending from a ceiling slab S by a second coupling bolt B2.
  • a plurality of holding cut recesses 10A are formed on the outer periphery so that a plurality of holding protrusions (not shown) protruding inwardly at regular intervals on the inner upper periphery of the upper canopy 70 are fit therein, thereby coupling the upper canopy 70 assembled with the lower canopy 80 to the ceiling bracket 10 to cover and protect the outer periphery of the motor bracket 20.
  • the motor bracket 20 has a hollow shaft insertion cylindrical part 20A into which a hollow shaft 31 of the motor assembly 30 is fit.
  • a first coupling hole 12 formed at both ends of the ceiling bracket 10 is in surface contact with a second coupling hole 22 formed in a curved part 21 at both sides of the motor bracket 20 to be coupled by a first coupling bolt B1, and a positioning protrusion piece 23 outwardly protruding from the curved part 21 at both sides of the motor bracket 20 is fittedly coupled to a positioning cut groove 13 having both ends of the ceiling bracket 10 cut to quickly assemble the motor bracket 20 and the ceiling bracket 10.
  • the motor assembly 30 has a hollow shaft 31 fit in the center of a stator assembly 32 installed inside a motor housing 30A.
  • a yoke assembly 33 provided with a plurality of magnets is arranged along an outer periphery of the stator assembly 32 so that a rotational force is applied to the yoke assembly 33 by an electromagnetic field generated when power is applied to the stationary stator assembly 32 to rotate the motor housing 30A.
  • the blade 60 coupled to the motor housing 30A rotates to circulate the air in the room, which is the general structure of a ceiling fan motor. Detailed description in this regard will be omitted.
  • Reference numeral 15 in the drawings denotes an electrical wire entry hole formed in the center of the ceiling bracket 10.
  • the present invention may be provided by fittedly coupling an annular fitting protrusion piece 11 formed by punching upwardly along an upper periphery of the ceiling bracket 10 to an annular fitting guide groove 111 formed on a lower part of a first vibration absorbing member 100 made of rubber having a cushioning function to absorb the vibration generated from the ceiling.
  • a plurality of first noise absorbing holes 112 may be formed inwardly on an upper part of the first vibration absorbing member 100, and an upper surface of the first vibration absorbing member 100 may be arranged to be in surface contact with a lower surface of the ceiling slab S.
  • Such an installation configuration of the first vibration absorbing member 100 reduces vibration by absorbing impact or vibration generated from the ceiling slab S with the cushioning action of the first vibration absorbing member 100, and absorbs the noise generated by the impact or vibration with the first noise absorbing hole 112, thereby suppressing the transmission of vibration to the motor assembly 30, so that the ceiling fan motor M can be driven stably while preventing damage to the ceiling bracket 10.
  • the annular fitting protrusion piece 11 is provided protruding upwardly from the ceiling bracket 10 by punching, which facilitates the installation of the first vibration absorbing member 100 and allows a firm and stable coupling.
  • irregularities are formed along the outer periphery of the annular fitting protrusion piece 11 to prevent separation of the first vibration absorbing member 100.
  • the present invention may be provided by arranging a second vibration absorbing member 200 made of rubber having a cushioning function, arranged between an inner lower surface of the ceiling bracket 10 and the motor bracket 20, to absorb the self-vibration generated when driving a motor.
  • the second vibration absorbing member 200 may be molded from polyurethane foam.
  • the second vibration absorbing member 200 comprises: a central guide hole 211 formed in the center through which the hollow shaft insertion cylindrical part 20A of the motor bracket 20 is guided and inserted; and a support part 212 outwardly protruding at a lower end of both sides, so that an upper surface of the second vibration absorbing member 200 is in surface contact with a lower surface inside the ceiling bracket 10, and a reinforcing protrusion 24 protruding from an upper part of the motor bracket 20 is coupled to a reinforcing protrusion fitting groove 213 formed in a lower surface of the second vibration absorbing member 200.
  • a reinforcing rib 25 protruding in the center of the inner side of the curved part 21 at both sides of the motor bracket 20 is guidedly coupled to a reinforcing rib guide fitting groove 212A formed in the center of the support part 212 of the second vibration absorbing member 200.
  • a bolt reinforcing protrusion 26 inwardly protruding at both ends of the inner side of the curved part 21 at both sides of the motor bracket 20 is guidedly coupled to a bolt reinforcing protrusion guide fitting groove 212B formed at both ends of the reinforcing rib guide fitting groove 212A.
  • the two ends and the lower surface of the second vibration absorbing member 200 of the present invention are stably coupled to the curved part 21 at both sides and the lower surface of the motor bracket 20, respectively, to maintain the coupling firmly without separation, so that the ceiling bracket 10 and the motor bracket 20 can be maintained in a resiliently supported state by the second vibration absorbing member 200.
  • a plurality of second noise absorbing holes 214 are formed inside an upper part of the second vibration absorbing member 200, a guide groove 215 into which the head of the second coupling bolt B2 is guided and fit is formed radially in a position corresponding to a third coupling hole 14 formed in the ceiling bracket 10, and an oval-shaped vibration absorbing air hole 216 is formed at both sides of the inner center of the second vibration absorbing member 200.
  • Such configuration allows the oval-shaped vibration absorbing air hole 216 to absorb the vibration while repeating compression and expansion by the vibration of the ceiling fan motor M, to prevent damage to the motor bracket 20 and improve the vibration reducing efficiency by absorbing the self-vibration generated when driving the ceiling fan motor M.
  • such configuration improves the noise reducing efficiency by absorbing noise from the self-vibration generated when driving a motor through a plurality of noise absorbing holes 214 formed inside an upper part of the second vibration absorbing member 200.
  • the head of the second coupling bolt B2 for coupling the ceiling bracket 10 to the slab S stays mounted in the guide groove 215 of the second vibration absorbing member 200 which improves cushioning efficiency.
  • the ovel-shaped vibration absorbing air hole 215 performing a cushioning action maintains a state resiliently pushing the second coupling bolt B2 to the slab S while being compressed and expanded, thereby preventing the loosening of the second coupling bolt B2 and allowing the ceiling fan motor M to be stably coupled to the slab S.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Motor Or Generator Frames (AREA)

Abstract

The ceiling fan motor with vibration proof according to the present invention comprises: a ceiling bracket 10; a motor bracket 20 fittedly coupled to both ends of the inner side the ceiling bracket 10; a motor assembly 30 coupled to the ceiling bracket 10 to rotate a blade 60; a first vibration absorbing member 100 made of rubber having a cushioning function, fittedly fixed and installed in an annular fitting protrusion piece 11 formed by punching upwardly along an upper periphery of the ceiling bracket 10, to absorb vibration generated from the ceiling; and a second vibration absorbing member 200 made of rubber having a cushioning function, arranged between an inner lower surface of the ceiling bracket 10 and the motor bracket 20, to absorb self-vibration generated when driving a motor.

Description

CEILING FAN MOTOR WITH VIBRATION PROOF
The present invention relates to a ceiling fan motor with vibration proof. More specifically, the present invention relates to a ceiling fan motor with vibration proof capable of absorbing vibration generated from the ceiling and self-vibration generated when driving a motor, thereby providing a motor with excellent noise reducing efficiency.
In general, a ceiling fan motor is an electrical device installed on the ceiling of a room to rotate a fan for air circulation. The ceiling fan motors are manufactured in various types of structures.
U.S. Patent No. 7,249,744 discloses a structure for assembling an upper canopy and a lower canopy by coupling the upper canopy and the lower canopy of different structures covering and protecting the outer periphery of a ceiling bracket using coupling bolts.
The ceiling fan motor in which an upper canopy and a lower canopy are assembled using coupling bolts as above is installed to hang from a lower part of a slab by coupling coupling bolts to the slab configuring the ceiling inside a building. At this time, the vibration generated from a bottom surface of an upper part of the slab is directly transmitted to the ceiling fan motor, which not only generates noise when the blade rotates, but also tends to loosen the coupling bolts coupled to the slab due to the vibration, thereby disallowing a stable coupling and reducing reliability of the ceiling fan motor.
Accordingly, the present inventors suggest a ceiling fan motor with vibration proof with a new structure in order to solve the above problems.
It is an object of the present invention to provide a ceiling fan motor capable of absorbing vibration generated from an upper part of a slab to maintain a stable coupling while reducing noise.
The above and other inherent objects of the present invention may all be easily achieved by the description of the present invention described below.
A ceiling fan motor with vibration proof according to the present invention, comprises: a ceiling bracket 10; a motor bracket 20 fittedly coupled to both ends of the inner side the ceiling bracket 10; a motor assembly 30 coupled to the ceiling bracket 10 to rotate a blade 60; a first vibration absorbing member 100 made of rubber having a cushioning function, fittedly fixed and installed in an annular fitting protrusion piece 11 formed by punching upwardly along an upper periphery of the ceiling bracket 10, to absorb vibration generated from the ceiling; and a second vibration absorbing member 200 made of rubber having a cushioning function, arranged between an inner lower surface of the ceiling bracket 10 and the motor bracket 20, to absorb self-vibration generated when driving a motor.
In the present invention, preferably, an annular fitting guide groove 111 formed in a lower part of the first vibration absorbing member 100 is fittedly coupled to an annular fitting protrusion piece 11 of the ceiling bracket 10, a plurality of first noise absorbing holes 112 are inwardly formed on an upper part of the first vibration absorbing member 100, and an upper surface of the first vibration absorbing member 100 is in surface contact with a lower surface of the ceiling slab S.
In the present invention, preferably, a first coupling hole 12 formed at both ends of the ceiling bracket 10 and a second coupling hole 22 formed in a curved part 21 at both sides of the motor bracket 20 are in surface contact with each other and coupled by a first coupling bolt B1, and a positioning protrusion piece 23 outwardly protruding from the curved part 21 at both sides of the motor bracket 20 is fittedly coupled to a positioning cut groove 13 having both ends of the ceiling bracket 10 cut.
In the present invention, preferably, a second vibration absorbing member 200 comprises: a central guide hole 211 formed in the center through which a hollow shaft insertion cylindrical part 20A of the motor bracket 20 is guided and inserted; and a support part 212 outwardly protruding at a lower end of both sides, so that an upper surface of the second vibration absorbing member 200 is in surface contact with an inner lower surface of the ceiling bracket 10, and a reinforcing protrusion 24 protruding from an upper part of the motor bracket 20 is coupled to a reinforcing protrusion fitting groove 213 formed in a lower surface of the second vibration absorbing member 200.
In the present invention, preferably, a reinforcing rib 25 protruding in the center of the inner side of the curved part 21 at both sides of the motor bracket 20 is guidedly coupled to a reinforcing rib guide fitting groove 212A formed in the center of the support part 212 of the second vibration absorbing member 200, and a bolt reinforcing protrusion 26 inwardly protruding at both ends of the inner side of the curved part 21 at both sides of the motor bracket 20 is guidedly coupled to a bolt reinforcing protrusion guide fitting groove 212B formed at both ends of the reinforcing rib guide fitting groove 212A.
In the present invention, preferably, a plurality of second noise absorbing holes 214 are formed inside an upper part of the second vibration absorbing member 200, a guide groove 215 into which the head of the second coupling bolt B2 is guided and fit is formed radially in a position corresponding to a third coupling hole 14 formed in the ceiling bracket 10, and an oval-shaped vibration absorbing air hole 216 is formed at both sides of the inner center of the second vibration absorbing member 200.
The present invention has an effect of allowing the ceiling fan to be stably suspending from the slab by preventing damage to the ceiling bracket and the motor bracket by the cushioning action of the first and second vibration absorbing members, as well as preventing the loosening of the first and second coupling bolts, and having excellent noise reducing efficiency as well as preventing failure or damage to the ceiling fan motor by absorbing vibration generated from the ceiling and self-vibration generated when driving a motor.
Also, the present invention has an effect of greatly improving the vibration absorbing efficiency by stably coupling the second vibration absorbing member to the motor bracket.
Also, the present invention has an effect of improving the productivity of the ceiling fan motor by enabling quick assembly of the motor bracket and the ceiling bracket.
Fig. 1 is a perspective view of an overall appearance of an embodiment of a ceiling fan motor according to the present invention;
Fig. 2 is an exploded top perspective view of excerpted main parts of a ceiling fan motor according to the present invention;
Fig. 3 is an exploded bottom perspective view of excerpted main parts of a ceiling fan motor according to the present invention;
Fig. 4 is a perspective cut-away view of an embodiment of a ceiling fan motor according to the present invention; and
Fig. 5 is a longitudinal cross-sectional view of an embodiment of a ceiling fan motor according to the present invention.
Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.
Fig. 1 is a perspective view of an overall appearance of an embodiment of a ceiling fan motor according to the present invention. Fig. 2 is an exploded top perspective view of excerpted main parts of a ceiling fan motor according to the present invention. Fig. 3 is an exploded bottom perspective view of excerpted main parts of a ceiling fan motor according to the present invention. Fig. 4 is a perspective cut-away view of an embodiment of a ceiling fan motor according to the present invention. Fig. 5 is a longitudinal cross-sectional view of an embodiment of a ceiling fan motor according to the present invention.
As illustrated in Figs. 1 to 5, a ceiling fan motor M according to the present invention comprises: a ceiling bracket 10; a motor bracket 20 fittedly coupled inside the ceiling bracket 10; a motor assembly 30 having a hollow shaft 31 fittedly coupled to the motor bracket 20; upper and lower bearing covers 40; a printed circuit board 50; a blade 60; and an upper canopy 70 and a lower canopy 80 covering and protecting the outer periphery of the ceiling bracket 10, the motor bracket 20 and the motor assembly 30, respectively.
The ceiling bracket 10 is a bracket suspending from a ceiling slab S by a second coupling bolt B2. A plurality of holding cut recesses 10A are formed on the outer periphery so that a plurality of holding protrusions (not shown) protruding inwardly at regular intervals on the inner upper periphery of the upper canopy 70 are fit therein, thereby coupling the upper canopy 70 assembled with the lower canopy 80 to the ceiling bracket 10 to cover and protect the outer periphery of the motor bracket 20.
The motor bracket 20 has a hollow shaft insertion cylindrical part 20A into which a hollow shaft 31 of the motor assembly 30 is fit. A first coupling hole 12 formed at both ends of the ceiling bracket 10 is in surface contact with a second coupling hole 22 formed in a curved part 21 at both sides of the motor bracket 20 to be coupled by a first coupling bolt B1, and a positioning protrusion piece 23 outwardly protruding from the curved part 21 at both sides of the motor bracket 20 is fittedly coupled to a positioning cut groove 13 having both ends of the ceiling bracket 10 cut to quickly assemble the motor bracket 20 and the ceiling bracket 10.
The motor assembly 30 has a hollow shaft 31 fit in the center of a stator assembly 32 installed inside a motor housing 30A. A yoke assembly 33 provided with a plurality of magnets is arranged along an outer periphery of the stator assembly 32 so that a rotational force is applied to the yoke assembly 33 by an electromagnetic field generated when power is applied to the stationary stator assembly 32 to rotate the motor housing 30A. Thereby, the blade 60 coupled to the motor housing 30A rotates to circulate the air in the room, which is the general structure of a ceiling fan motor. Detailed description in this regard will be omitted.
Reference numeral 15 in the drawings denotes an electrical wire entry hole formed in the center of the ceiling bracket 10.
The present invention may be provided by fittedly coupling an annular fitting protrusion piece 11 formed by punching upwardly along an upper periphery of the ceiling bracket 10 to an annular fitting guide groove 111 formed on a lower part of a first vibration absorbing member 100 made of rubber having a cushioning function to absorb the vibration generated from the ceiling.
In addition, a plurality of first noise absorbing holes 112 may be formed inwardly on an upper part of the first vibration absorbing member 100, and an upper surface of the first vibration absorbing member 100 may be arranged to be in surface contact with a lower surface of the ceiling slab S.
Such an installation configuration of the first vibration absorbing member 100 reduces vibration by absorbing impact or vibration generated from the ceiling slab S with the cushioning action of the first vibration absorbing member 100, and absorbs the noise generated by the impact or vibration with the first noise absorbing hole 112, thereby suppressing the transmission of vibration to the motor assembly 30, so that the ceiling fan motor M can be driven stably while preventing damage to the ceiling bracket 10. In addition, the annular fitting protrusion piece 11 is provided protruding upwardly from the ceiling bracket 10 by punching, which facilitates the installation of the first vibration absorbing member 100 and allows a firm and stable coupling. In addition, irregularities are formed along the outer periphery of the annular fitting protrusion piece 11 to prevent separation of the first vibration absorbing member 100.
The present invention may be provided by arranging a second vibration absorbing member 200 made of rubber having a cushioning function, arranged between an inner lower surface of the ceiling bracket 10 and the motor bracket 20, to absorb the self-vibration generated when driving a motor. The second vibration absorbing member 200 may be molded from polyurethane foam.
The second vibration absorbing member 200 comprises: a central guide hole 211 formed in the center through which the hollow shaft insertion cylindrical part 20A of the motor bracket 20 is guided and inserted; and a support part 212 outwardly protruding at a lower end of both sides, so that an upper surface of the second vibration absorbing member 200 is in surface contact with a lower surface inside the ceiling bracket 10, and a reinforcing protrusion 24 protruding from an upper part of the motor bracket 20 is coupled to a reinforcing protrusion fitting groove 213 formed in a lower surface of the second vibration absorbing member 200.
A reinforcing rib 25 protruding in the center of the inner side of the curved part 21 at both sides of the motor bracket 20 is guidedly coupled to a reinforcing rib guide fitting groove 212A formed in the center of the support part 212 of the second vibration absorbing member 200. A bolt reinforcing protrusion 26 inwardly protruding at both ends of the inner side of the curved part 21 at both sides of the motor bracket 20 is guidedly coupled to a bolt reinforcing protrusion guide fitting groove 212B formed at both ends of the reinforcing rib guide fitting groove 212A.
Accordingly, the two ends and the lower surface of the second vibration absorbing member 200 of the present invention are stably coupled to the curved part 21 at both sides and the lower surface of the motor bracket 20, respectively, to maintain the coupling firmly without separation, so that the ceiling bracket 10 and the motor bracket 20 can be maintained in a resiliently supported state by the second vibration absorbing member 200.
In the present invention, preferably, a plurality of second noise absorbing holes 214 are formed inside an upper part of the second vibration absorbing member 200, a guide groove 215 into which the head of the second coupling bolt B2 is guided and fit is formed radially in a position corresponding to a third coupling hole 14 formed in the ceiling bracket 10, and an oval-shaped vibration absorbing air hole 216 is formed at both sides of the inner center of the second vibration absorbing member 200.
Such configuration allows the oval-shaped vibration absorbing air hole 216 to absorb the vibration while repeating compression and expansion by the vibration of the ceiling fan motor M, to prevent damage to the motor bracket 20 and improve the vibration reducing efficiency by absorbing the self-vibration generated when driving the ceiling fan motor M. At the same time, such configuration improves the noise reducing efficiency by absorbing noise from the self-vibration generated when driving a motor through a plurality of noise absorbing holes 214 formed inside an upper part of the second vibration absorbing member 200.
In addition, the head of the second coupling bolt B2 for coupling the ceiling bracket 10 to the slab S stays mounted in the guide groove 215 of the second vibration absorbing member 200 which improves cushioning efficiency. Thus, even when self-vibration occurs when driving the ceiling fan motor M, the ovel-shaped vibration absorbing air hole 215 performing a cushioning action maintains a state resiliently pushing the second coupling bolt B2 to the slab S while being compressed and expanded, thereby preventing the loosening of the second coupling bolt B2 and allowing the ceiling fan motor M to be stably coupled to the slab S.
It should be noted that the description of the present invention described above is merely an example for understanding the present invention, and is not intended to limit the scope of the present invention. It should be construed that the scope of the present invention is defined by the appended claims, and all modifications and alternations of the present invention fall within the protection scope of the present invention.

Claims (6)

  1. A ceiling fan motor with vibration proof, comprising:
    a ceiling bracket 10;
    a motor bracket 20 fittedly coupled to both ends of the inner side the ceiling bracket 10;
    a motor assembly 30 coupled to the ceiling bracket 10 to rotate a blade 60;
    a first vibration absorbing member 100 made of rubber having a cushioning function, fittedly fixed and installed in an annular fitting protrusion piece 11 formed by punching upwardly along an upper periphery of the ceiling bracket 10, to absorb vibration generated from the ceiling; and
    a second vibration absorbing member 200 made of rubber having a cushioning function, arranged between an inner lower surface of the ceiling bracket 10 and the motor bracket 20, to absorb self-vibration generated when driving a motor.
  2. The ceiling fan motor of claim 1, wherein an annular fitting guide groove 111 formed in a lower part of the first vibration absorbing member 100 is fittedly coupled to an annular fitting protrusion piece 11 of the ceiling bracket 10, a plurality of first noise absorbing holes 112 are inwardly formed on an upper part of the first vibration absorbing member 100, and an upper surface of the first vibration absorbing member 100 is in surface contact with a lower surface of the ceiling slab S.
  3. The ceiling fan motor of claim 1, wherein a first coupling hole 12 formed at both ends of the ceiling bracket 10 and a second coupling hole 22 formed in a curved part 21 at both sides of the motor bracket 20 are in surface contact with each other and coupled by a first coupling bolt B1, and a positioning protrusion piece 23 outwardly protruding from the curved part 21 at both sides of the motor bracket 20 is fittedly coupled to a positioning cut groove 13 having both ends of the ceiling bracket 10 cut.
  4. The ceiling fan motor of claim 1, wherein a second vibration absorbing member 200 comprises: a central guide hole 211 formed in the center through which a hollow shaft insertion cylindrical part 20A of the motor bracket 20 is guided and inserted; and a support part 212 outwardly protruding at a lower end of both sides, so that an upper surface of the second vibration absorbing member 200 is in surface contact with an inner lower surface of the ceiling bracket 10, and a reinforcing protrusion 24 protruding from an upper part of the motor bracket 20 is coupled to a reinforcing protrusion fitting groove 213 formed in a lower surface of the second vibration absorbing member 200.
  5. The ceiling fan motor of claim 1, wherein a reinforcing rib 25 protruding in the center of the inner side of the curved part 21 at both sides of the motor bracket 20 is guidedly coupled to a reinforcing rib guide fitting groove 212A formed in the center of the support part 212 of the second vibration absorbing member 200, and a bolt reinforcing protrusion 26 inwardly protruding at both ends of the inner side of the curved part 21 at both sides of the motor bracket 20 is guidedly coupled to a bolt reinforcing protrusion guide fitting groove 212B formed at both ends of the reinforcing rib guide fitting groove 212A.
  6. The ceiling fan motor of claim 1, wherein a plurality of second noise absorbing holes 214 are formed inside an upper part of the second vibration absorbing member 200, a guide groove 215 into which the head of the second coupling bolt B2 is guided and fit is formed radially in a position corresponding to a third coupling hole 14 formed in the ceiling bracket 10, and an oval-shaped vibration absorbing air hole 216 is formed at both sides of the inner center of the second vibration absorbing member 200.
PCT/KR2024/003253 2023-04-12 2024-03-13 Ceiling fan motor with vibration proof WO2024214967A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020230047977A KR20240151989A (en) 2023-04-12 2023-04-12 Fan motor with vibtration proof
KR10-2023-0047977 2023-04-12

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WO2024214967A1 true WO2024214967A1 (en) 2024-10-17

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KR (1) KR20240151989A (en)
WO (1) WO2024214967A1 (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050006833A1 (en) * 2003-07-09 2005-01-13 Shyue-Lin Hsieh Vibration isolator for a ceiling fan
US20160238035A1 (en) * 2015-02-17 2016-08-18 Fanimation, Inc. Vibration Isolation System for a Fan Motor
KR101833146B1 (en) * 2016-11-14 2018-02-27 경진부로아 주식회사 The motor fixing bracket for reduction vibration)
KR102019627B1 (en) * 2019-01-29 2019-11-14 주식회사 아투 A ventilation apparatus
KR20220114127A (en) * 2021-02-08 2022-08-17 장성혁 Ceiling fan device

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050006833A1 (en) * 2003-07-09 2005-01-13 Shyue-Lin Hsieh Vibration isolator for a ceiling fan
US20160238035A1 (en) * 2015-02-17 2016-08-18 Fanimation, Inc. Vibration Isolation System for a Fan Motor
KR101833146B1 (en) * 2016-11-14 2018-02-27 경진부로아 주식회사 The motor fixing bracket for reduction vibration)
KR102019627B1 (en) * 2019-01-29 2019-11-14 주식회사 아투 A ventilation apparatus
KR20220114127A (en) * 2021-02-08 2022-08-17 장성혁 Ceiling fan device

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