| AMOTECH CO., LTD. Patent applications |
| Patent application number | Title | Published |
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| 20110316365 | SLIM TYPE STATOR AND METHOD OF MAKING THE SAME, SLIM TYPE MOTOR HAVING THE STATOR, AND DIRECT DRIVE APPARATUS FOR DRUM-WASHING MACHINE - Provided is a stator for use in a brushless direct-current (BLDC) that is used for a direct drive (DD) apparatus for drum-washing machines that is mounted in an allowable space without reducing size of a tub related to a laundry capacity in a drum-washing machine, to thereby make a basket in the inside of the tub rotationally driven in a direct drive method. The slim type stator includes: a number of division cores; a number of bobbins that partially surrounds the number of the division cores; an electric power terminal block on the outer portion of which a connector is provided in which external electric power is applied through the connector and that has terminal pins that are extended to the inside of the stator from the connector; a wiring box that is integrally formed with each bobbin and that mutually connects a stator coil with the terminal pins per phase; and a stator holder that mutually connects a number of division stator cores around which coils are wound with the outer circumference of the bobbins and supports the number of division stator cores. | 12-29-2011 |
| 20110116954 | Electric Water Pump - An electric water pump apparatus may include a body, a stator disposed in the body, a rotor in the stator, a pump cover having an inlet and an outlet, wherein a front surface of the body and the pump cover form a volute chamber, wherein a stator chamber is formed at an outer portion in the body in a radial direction and the stator is mounted in the stator chamber, and wherein a rotor chamber is formed at an inner portion in the body and the rotor is mounted in the rotor chamber, a shaft rotatably coupled to the front surface and fixed into the rotor, and an impeller fixed to a front portion of the shaft, wherein the shaft includes a first shaft connecting the impeller and a front end portion of the rotor and a second shaft connected to a rear end portion of the rotor along the central axis of the shaft. | 05-19-2011 |
| 20110116953 | Electric Water Pump - An electric water pump may include a stator generating a magnetic field, a rotor rotated by the magnetic field, a pump cover, a body having a volute chamber with the pump chamber, a stator chamber and a rotor chamber, the stator being mounted in the stator chamber and the rotor being mounted in the rotor chamber, a shaft fixed to the rotor, an impeller fixed to the shaft in the volute chamber, a driver case mounted at a rear end of the body and having a rear surface opened backward and formed of a driver chamber therein, and a driver mounted in the driver chamber and applying a control signal to the stator, wherein the case surface is provided with an insert portion protruded forward from an external circumference thereof and inserted in a rear end portion of the body, and a fixing groove in which the insert portion is inserted. | 05-19-2011 |
| 20110116952 | Electric water pump - An electric water pump apparatus may include a body having a stator chamber and a rotor chamber therein, a stator having a hollow cylindrical shape and being disposed in the stator chamber and generating a magnetic field, wherein the stator fluidly insulates the stator chamber and the rotor chamber, a rotor disposed in the rotor chamber and enclosed by the stator, wherein the rotor is rotated by the magnetic field, and a pump cover connected to the body and forming a volute chamber therein, wherein the volute chamber and the rotor chamber are fluidly-communicated through a connecting hole formed to the body and a coolant is supplied to the rotor chamber through the connection hole, wherein the stator includes a stator groove formed in an inner circumference therein and the stator groove is fluid-connected to the rotor chamber and the volute chamber through the connection hole. | 05-19-2011 |
| 20110116948 | METHOD FOR MANUFACTURING STATOR FOR ELECTRIC WATER PUMP - A method for manufacturing a stator for an electric water pump may be used for manufacturing the stator used in the electric water pump. In the electric water pump which includes stator assembly for an electric water pump, wherein the stator assembly including a plurality of core-insulator assemblies generates a magnetic field according to a control signal and a rotor is rotated by the magnetic field generated at the stator assembly to pressurize coolant, the method for manufacturing the stator assembly may include a) stacking a plurality of pieces made of a magnetic material to form a core stack, b) molding an insulator to the core stack, c) coiling a coil to the insulator to form a core-insulator assembly so as to form a magnetic path, and d) connecting the respective core-insulator assembly in an annular shape in sequence to form the stator assembly. | 05-19-2011 |
| 20110116947 | Electric water pump - The present invention relates to an electric water pump having improved performance and durability. The electric water pump may include a stator generating a magnetic field according to a control signal, a rotor rotated by the magnetic field, a pump cover having an inlet and an outlet, a body having a front surface forming a volute chamber, a stator chamber, and a rotor chamber, the stator mounted in the stator chamber and the rotor mounted in the rotor chamber, a shaft having a central axis, fixed to the rotor and mounted in the rotor chamber, and an impeller fixed to the shaft so as to rotate together with the shaft, pressurizing the coolant having flowed in through the inlet, and mounted in the volute chamber, wherein the rotor chamber is fluidly connected to the volute chamber, and the stator chamber is fluidly closed and sealed from the rotor chamber. | 05-19-2011 |
| 20110116921 | WATER PUMP PROVIDED WITH A BEARING - A water pump that is equipped with a bearing, may include a drive shaft, at least two bearings of an arc type that are mounted around the exterior circumference of the drive shaft and being engaged with each other, a housing that fixes the at least two bearings of the art type therein such that the drive shaft can rotate in the at least two bearings of the arc type. | 05-19-2011 |
| 20110115313 | ELECTRIC WATER PUMP - An electric water pump may include a stator generating a magnetic field according to a control signal and a rotor rotated by the magnetic field generated at the stator and pressurizing coolant. According to the electric water pump, the stator may include, a stator core formed by stacking a plurality of pieces made of a magnetic material, an insulator connecting pieces of the stator core to each other, a coil coiling the stator core so as to form a magnetic path, a Hall sensor detecting a position of the rotor, a Hall sensor board controlling the control signal supplied to the stator according to the position of the rotor detected by the Hall sensor, and a stator case wrapping and sealing the stator core, the insulator, the coil, the Hall sensor, and the Hall sensor board. | 05-19-2011 |
| 20100288418 | MAGNETIC SHEET FOR RADIO FREQUENCY IDENTIFICATION ANTENNA, METHOD OF MANUFACTURING THE SAME, AND RADIO FREQUENCY IDENTIFICATION ANTENNA USING THE SAME - Provided are a magnetic sheet for use in a radio frequency identification (RFID) antenna, an RFID antenna including the magnetic sheet, and a method of manufacturing the magnetic sheet, in which the magnetic sheet includes an amorphous alloy selected from the group consisting of Fe—Si—B, Fe—Si—B—Cu—Nb, Fe—Zr—B and Co—Fe—Si—B. The magnetic sheet is made by laminating amorphous alloy ribbons made of an amorphous alloy between magnetic sheet layers formed of alloy powder including at least one amorphous alloy and then compression-molding the amorphous alloy ribbons, to thereby control microcrack of the amorphous alloy ribbons and enhance characteristic of an end-product. The magnetic sheet is also thin, and has an excellent magnetic permeability, and a simple manufacturing process. | 11-18-2010 |
| 20100196174 | IPM MOTOR AND VACUUM INHALING APPARATUS USING THE SAME - Provided is a high speed and high efficiency IPM (Interior Permanent Magnet) motor and a slim type vacuum inhaling apparatus using the same, which establishes a passage path of introduced air into a path of air-cooling the inside of a stator and a circuit element to thus cool heat that is produced from the IPM motor without a special heat radiator. The IPM motor includes: a stator having a number of tees which are protruded so as to form a number of slots on the inner circumferential wall of a cylindrical body, and a stator coil which is partially wound around the slots; and an IPM type rotor having a rotor core at the central side of which a rotating shaft is mounted, and a number of permanent magnets which are fitted into a number of permanent magnet insertion holes which are formed on the identical circumference of the rotor core, and which is rotated by the stator. | 08-05-2010 |
| 20100171378 | METHOD OF MAKING INTEGRATED STATOR, BRUSHLESS DIRECT-CURRENT MOTOR OF RADIAL CORE TYPE DOUBLE ROTOR STRUCTURE USING THE INTEGRATED STATOR, AND METHOD OF MAKING THE SAME - Provided are a radial core type brushless direct-current (BLDC) motor and a method of making the same, having an excellent assembly capability of division type stator cores in a double rotor structure BLDC motor. The BLDC motor includes a rotational shaft, an integrated double rotor including an inner rotor and an outer rotor, and a rotor supporter wherein a trench type space is formed between the inner rotor and the outer rotor, and an end extended from the inner rotor is connected with the outer circumferential surface of a bushing combined with the rotational shaft, and an integrated stator wherein one end of the stator is disposed in the trench type space and an extension axially extended from the other end of the integrated stator is fixed to the housing of the apparatus. In the integrated stator, U, V, W phase coil assemblies are formed of a number of core groups including a number of division type cores, wherein for each phase coil assembly, the division type core groups of the U, V, W phase coil assemblies are alternately disposed in an annular form in sequence of the phases, and the respective division type core groups are integrally formed into a single body in annular form by a stator support. | 07-08-2010 |
| 20100170057 | SLIM TYPE VACUUM INHALING APPARATUS HAVING HIGH EFFICIENCY AND ROBOT CLEANER USING THE SAME - Provided is a high-efficiency slim vacuum inhalation apparatus which cools heat generated from heat-generation sources without using particular heat radiation components, and a robot cleaner employing the same. The vacuum inhalation apparatus does not need particular heat radiation components since an impeller is closely adhered to a rotational shaft by a pair of washers and an impeller bushing, to thus avoid from sliding, and since an inhalation efficiency which is caused by a brushless direct-current (BLDC) motor increases, and thus power consumption decreases. Further, since a BLDC motor is incorporated in a vacuum inhalation apparatus so that the vacuum inhalation apparatus can be implemented into a slim type, a robot cleaner can be also compactly realized into a slim type. | 07-08-2010 |
| 20100164307 | METHOD OF MAKING INTEGRATED STATOR, BRUSHLESS DIRECT-CURRENT MOTOR OF RADIAL CORE TYPE DOUBLE ROTOR STRUCTURE USING THE INTEGRATED STATOR, AND METHOD OF MAKING THE SAME - Provided are a radial core type brushless direct-current (BLDC) motor and a method of making the same, having an excellent assembly capability of division type stator cores in a double rotor structure BLDC motor. The BLDC motor includes a rotational shaft, an integrated double rotor including an inner rotor and an outer rotor, and a rotor supporter wherein a trench type space is formed between the inner rotor and the outer rotor, and an end extended from the inner rotor is connected with the outer circumferential surface of a bushing combined with the rotational shaft, and an integrated stator wherein one end of the stator is disposed in the trench type space and an extension axially extended from the other end of the integrated stator is fixed to the housing of the apparatus. In the integrated stator, U, V, W phase coil assemblies are formed of a number of core groups including a number of division type cores, wherein for each phase coil assembly, the division type core groups of the U, V, W phase coil assemblies are alternately disposed in an annular form in sequence of the phases, and the respective division type core groups are integrally formed into a single body in annular form by a stator support. | 07-01-2010 |
| 20100156231 | SLIM TYPE STATOR, SLIM TYPE MOTOR HAVING THE STATOR AND DIRECT DRIVE APPARATUS FOR DRUM-WASHING MACHINE - Provided is a slim type stator that is used to make a BLDC (Brushless Direct-Current) motor having a stator of a division core structure and a double rotor for use in a drum-washing machine, a slim type motor having the same, and a direct drive apparatus for use in the drum-washing machine. The stator includes: an annular division stator core assembly that is assembled in an annular form by winding a three-phase coil on a number of bobbins that are molded on respective outer circumferences of a number of division cores to thus surround a middle portion of each bobbin wherein each bobbin includes first and second flanges formed at one side of the bobbin and the other side thereof, respectively, and a coupling protrusion and a coupling groove that are formed at both side ends of the first flange that is disposed inward, and wherein the coupling protrusion and the coupling groove are mutually coupled between adjoining division stator bobbins; and a stator holder that molds the division stator core assembly that is formed in an annular form by winding the coils on the bobbins by an insert molding that uses a thermosetting resin, excepting inner and outer side surfaces of each division core of the division stator core assembly. | 06-24-2010 |
| 20100156216 | SLIM TYPE STATOR HAVING INTEGRATED COVER STRUCTURE, SLIM TYPE MOTOR AND DIRECT DRIVE APPARATUS FOR DRUM-WASHING MACHINE INCLUDING THE SAME - Provided is a cover-integrated stator that is used to make a BLDC Brushless Direct-Current motor having a stator of a division core structure and a double rotor for use in a drum-washing machine, a slim type motor, and a direct drive apparatus for use in the drum-washing machine. The stator includes: a rotating shaft whose one end is rotatably combined with a tub of a drum-washing machine and on the leading end of which a basket is fixedly combined; a double-rotor including inner and outer rotors that are disposed at a predetermined distance between the inner/outer portions and a rotor holder that connects respective one end of the inner and outer rotors and simultaneously whose inner circumference is located at the center of gravity of the rotor, and that is extended and formed in a bushing combined with the rotating shaft; and a stator that is formed by integrating a division stator core assembly that is assembled in an annular form by winding coils on a number of division cores by a stator holder, and that is disposed between the inner and outer rotors, in which the stator holder includes an inner extension portion that is axially extended and to the center of gravity of which the other end of the rotating shaft is rotatably supported, and an outer extension portion that is extended forwards from the outer circumference of the stator holder and that is fixedly combined with the tub, so as to form a cover surrounding the double-rotor. | 06-24-2010 |
| 20100097272 | INTERNAL ANTENNA WITH AIR GAP - An air gap for minimizing a dielectric constant is formed between dielectric blocks having conductor patterns in order to minimize interference between conductor patterns, thereby providing a slim internal antenna that has a wide bandwidth in a low frequency band as well as in a high frequency band. According to the present invention, it is possible to obtain an antenna that simply and quickly obtains desired characteristics by easily adjusting the thickness of the air gap. Further, the internal antenna is formed by layering dielectric blocks that have conductor patterns. Accordingly, while maintaining the interconnection between the conductor patterns, the internal antenna can change resonant frequency thereof into low frequency as compared with an antenna having the same volume of a dielectric. That is, it is possible to effectively reduce the size of an antenna without significantly affecting the characteristics of the antenna. | 04-22-2010 |
| 20090121822 | Disc Varistor and Method of Manufacturing the Same - Disclosed herein are a disc varistor having a capability to absorb a double amount of surge and a method of manufacturing the varistor. The varistor includes a disc-shaped first ceramic body having first and second electrodes on opposite surfaces thereof, and a disc-shaped second ceramic body having third and fourth electrodes on opposite surfaces thereof. A first lead wire is in interposed between the second and third electrodes and electrically connected to the second and third electrodes. The varistor also includes a second lead wire. The second lead wire has a body portion electrically connected to the first electrode of the first ceramic body, a first extension extending from the body portion to the second ceramic body, and a second extension extending from the first extension to the fourth electrode. | 05-14-2009 |
