WO2022139536A1 - Appareil de traitement de linge - Google Patents

Appareil de traitement de linge Download PDF

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Publication number
WO2022139536A1
WO2022139536A1 PCT/KR2021/019789 KR2021019789W WO2022139536A1 WO 2022139536 A1 WO2022139536 A1 WO 2022139536A1 KR 2021019789 W KR2021019789 W KR 2021019789W WO 2022139536 A1 WO2022139536 A1 WO 2022139536A1
Authority
WO
WIPO (PCT)
Prior art keywords
unit
actuator
moving unit
time
coupler
Prior art date
Application number
PCT/KR2021/019789
Other languages
English (en)
Inventor
Boram Lee
Joonho Pyo
Jeongyeon Park
Gyeoungjin JEON
Original Assignee
Lg Electronics Inc.
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 Lg Electronics Inc. filed Critical Lg Electronics Inc.
Publication of WO2022139536A1 publication Critical patent/WO2022139536A1/fr

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Classifications

    • 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
    • H02K7/06—Means for converting reciprocating motion into rotary motion or vice versa
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
    • D06F37/30—Driving arrangements 
    • D06F37/40—Driving arrangements  for driving the receptacle and an agitator or impeller, e.g. alternatively
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
    • D06F37/30—Driving arrangements 
    • D06F37/304—Arrangements or adaptations of electric motors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D11/00—Clutches in which the members have interengaging parts
    • F16D11/14—Clutches in which the members have interengaging parts with clutching members movable only axially
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D23/00—Details of mechanically-actuated clutches not specific for one distinct type
    • F16D23/12—Mechanical clutch-actuating mechanisms arranged outside the clutch as such
    • 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
    • H02K1/12—Stationary parts of the magnetic circuit
    • 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
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
    • H02K11/20—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for measuring, monitoring, testing, protecting or switching
    • 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
    • H02K7/003—Couplings; Details of shafts
    • 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
    • H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
    • H02K7/108—Structural association with clutches, brakes, gears, pulleys or mechanical starters with friction clutches
    • 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
    • H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
    • H02K7/116—Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears
    • 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
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/28—Air properties
    • D06F2103/32—Temperature
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
    • D06F2105/46—Drum speed; Actuation of motors, e.g. starting or interrupting
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F34/00—Details of control systems for washing machines, washer-dryers or laundry dryers
    • D06F34/14—Arrangements for detecting or measuring specific parameters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D23/00—Details of mechanically-actuated clutches not specific for one distinct type
    • F16D23/12—Mechanical clutch-actuating mechanisms arranged outside the clutch as such
    • F16D2023/123—Clutch actuation by cams, ramps or ball-screw mechanisms
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K16/00—Machines with more than one rotor or stator
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K2201/00—Specific aspects not provided for in the other groups of this subclass relating to the magnetic circuits
    • H02K2201/18—Machines moving with multiple degrees of freedom

Definitions

  • the present disclosure relates to a laundry treatment apparatus, and more particularly to a laundry treatment apparatus including a clutch member capable of separately or simultaneously rotating a drum and an agitator.
  • a laundry treatment apparatus may refer to an apparatus for washing laundry (e.g., a laundry object, a drying object, etc.), an apparatus for drying wet or washed laundry, and/or an apparatus for performing washing and drying of laundry.
  • Conventional laundry treatment apparatuses can be classified into a front-loading type laundry treatment device in which laundry is put into a tub through an inlet provided at a front surface of the front-loading type laundry treatment device, and a top-loading type laundry treatment device in which laundry is put into a tub through an inlet provided at a top surface of the top-loading type laundry treatment device.
  • the top-loading type laundry treatment device may include a drum that rotates upon receiving laundry, and an agitator that rotates separately from the drum to improve washing performance.
  • the agitator may form a bottom surface of the drum, and may protrude upward from the bottom surface of the drum, thereby forming a water stream separately from the drum.
  • the conventional laundry treatment apparatus can control the rotation direction of the drum and the agitator by arranging a clutch in a driver that provides power required to rotate the drum and the agitator.
  • FIG. 1 is a schematic diagram illustrating a driver structure of a conventional laundry treatment apparatus.
  • the conventional laundry treatment apparatus may include a driver 7 that is fixed to a lower portion of a tub 5 storing water to generate a rotating magnetic field.
  • the driver 7 may include a stator 71 to generate a rotating magnetic field, a rotor 72 rotated by the stator 71, and a drive shaft 73 to rotate by coupling to the rotor 72.
  • the rotor 72 may be provided to accommodate the outer circumferential surface of the stator 71, and the drive shaft 73 may extend toward the drum disposed in in the tub 5.
  • the conventional laundry treatment apparatus may further include a clutch unit capable of transferring power generated by the drive shaft 73 to the drum and the agitator that rotates separately from the bottom surface of the drum.
  • the clutch unit may include a gearbox 74 provided to be engaged with the drive shaft 73 and a rotary shaft 75 extending from the gearbox 74 to rotate the agitator.
  • the clutch unit may further include a housing 5 in which the gearbox 74 is disposed.
  • the housing 5 may include the gearbox 74, the rotary shaft 75, and the drive shaft 73 to be rotated therein, and may be coupled to the drum. As a result, the housing 5 may rotate independently of the drive shaft 73, and the drum may rotate independently of the agitator.
  • the clutch unit may further include a coupler 4 for enabling the housing 5 to be selectively coupled to the driver 7.
  • the coupler 4 may selectively couple the housing 5 to the rotor 72, and may thus transmit rotational force of the rotor 72 to the housing 5.
  • the coupler 4 may be coupled to the housing 4, so that the coupler 4 can descend toward the rotor 72 or can ascend to be spaced apart from the rotor 72.
  • the housing 5 and the drum may rotate together with the rotor 72 due to the rotor 72.
  • the coupler 4 ascends to separate the housing 5 and the rotor 72 from each other, only the agitator may rotate, or the drum may rotate in the opposite direction to the agitator according to the structure of the gearbox 74.
  • the conventional laundry treatment apparatus may include an actuator 2 for providing power to move the coupler 4, and a moving unit 3 for moving the coupler 4 with power generated by the actuator 2.
  • the moving unit 3 may be provided to support the coupler 4, and the actuator 2 may further include intermediary units 21 and 22 capable of directly moving the moving unit 3.
  • the conventional laundry treatment apparatus may move the moving unit 3 by driving the actuator 2, so that the coupler 4 can ascend.
  • the actuator 2 may include a motor for generating rotational force and the like. Therefore, the intermediary units 21 and 22 for use in the conventional laundry treatment apparatus may be provided with various structures capable of converting the rotational energy generated by the actuator 2 into a rectilinear reciprocating motion capable of elevating the moving unit 3.
  • the intermediary units 21 and 22 may be classified into a horizontal moving unit 21 to reciprocate in a horizontal direction by rotation of the actuator 2, and a vertical moving unit 22 capable of converting reciprocating motion of the horizontal moving unit 21 into vertical (or perpendicular) reciprocating motion of the horizontal moving unit 21.
  • the intermediary units are provided to convert the rotational motion generated by the actuator 2 into rectilinear reciprocating motion.
  • the conventional laundry treatment apparatus has disadvantages in that the actuator 2 should be located farther than the driver 7.
  • the conventional laundry treatment apparatus may be configured such that the actuator 2 is separately disposed in an outer region D2 located outside the entire diameter D1 of the driver 7, so that the conventional laundry treatment apparatus should secure a predetermined displacement (A) through which the intermediary units 21 and 22 can sufficiently move the coupler 4.
  • the actuator 2 in order for the actuator 2 to move the coupler 4, the actuator 2 should be disposed farther from the coupler 4.
  • a volume to be occupied by the actuator 2 and the intermediary units 21 and 22 is separately needed, so that the volume required for installation of constituent components can be further expanded regardless of a washing volume.
  • the conventional laundry treatment apparatus has a limitation in compact installation of the driver and the clutch unit, and cannot secure a sufficient washing capacity.
  • the conventional laundry treatment apparatus Since the actuator 2 is disposed outside the driver, the conventional laundry treatment apparatus has difficulty in installing the driver and the actuator 2 separately from each other.
  • the conventional laundry treatment apparatus has a limitation in that an additional structure is required to prevent interference between the driver and the intermediary units 21 and 22.
  • the conventional laundry treatment apparatus requires an additional process in which, after the driver is assembled with the tub, the actuator 2 and the intermediary units 21 and 22 should be assembled or installed in the driver.
  • the actuator 2 is separately disposed outside the driver, so that a separate control line for controlling the actuator 2 should be separately disposed or fixed outside the driver, resulting in inconvenience of use.
  • the conventional laundry treatment apparatus is configured such that the coupler 4 and the actuator 2 are spaced apart from each other, and has disadvantages in that the intermediary units 21 and 22 for connecting the coupler 4 to the actuator 2 cannot be omitted.
  • the conventional laundry treatment apparatus has difficulty in in transferring power generated by the actuator 2 to the coupler 4 without change.
  • the actuator 2 has no choice but to rotate the intermediary units 21 and 22 at a predetermined angle level, so that it is impossible to utilize the overall output of the actuator 2.
  • the sensor unit is provided to detect the angle of the actuator 2 or the angle of the intermediary units 21 and 22.
  • the conventional laundry treatment apparatus indirectly recognizes the position of the coupler 4 through the actuator 4, resulting in reduction in accuracy.
  • the controller or the like of the laundry treatment apparatus has no choice but to indirectly determine whether the coupler 4 and the intermediary unit 3 operate normally through the actuator 2.
  • the conventional laundry treatment apparatus enables the sensor unit to be in contact with the actuator 2 or the intermediary units 21 and 22, so that the conventional laundry treatment apparatus has disadvantages in that the overall volume of the actuator 2 and the intermediary units 21 and 22 should be further expanded.
  • the actuator 2 cannot be installed in the driver.
  • the conventional laundry treatment apparatus should control the actuator to be continuously driven until the coupler 4 reaches a target point such as a high point or a low point. Accordingly, the conventional laundry treatment apparatus has disadvantages in that, when the coupler 4 rapidly ascends and descends, noise occurs, or the coupler 4 collides with the housing or the driver 7 or is improperly coupled to the housing or the driver 7.
  • the conventional laundry treatment apparatus is driven without considering the fact that the output of the actuator can vary depending on temperature, so that vibration and noise may unavoidably occur in the clutch.
  • An object of the present disclosure is to provide a laundry treatment apparatus in which an actuator driving a clutch is installed by utilizing a space occupied by a driver.
  • Another object of the present disclosure is to provide a laundry treatment apparatus capable of driving the actuator to reduce vibration or noise to be generated in a clutch.
  • Another object of the present disclosure is to provide a laundry treatment apparatus capable of driving the actuator to increase reliability of operation in a situation where a drum is coupled to or separated from a driver.
  • Another object of the present disclosure is to provide a laundry treatment apparatus capable of controlling the output of the actuator according to temperature.
  • a laundry treatment apparatus may allow a clutch structure including an actuator to be disposed in a driver or to overlap with the driver, so that the clutch and the driver can be modularized and installed.
  • the laundry treatment apparatus may allow the actuator driving the clutch to be installed by utilizing an inner space of a stator.
  • the laundry treatment apparatus may repeatedly control driving and stopping of the actuator when driving the actuator.
  • the laundry treatment apparatus may control the actuator such that a time or speed where the coupler ascends is slower than the time or speed where the coupler descends.
  • the laundry treatment apparatus may allow the actuator to be intermittently driven while the coupler ascends to a high point or descends to a low point.
  • a stoppage time of the actuator is established to be longer than a driving time of the actuator, so that the laundry treatment apparatus can intermittently drive the actuator using the stoppage time and the driving time of the actuator.
  • the laundry treatment apparatus may differently control the speed of driving the actuator according to an outdoor temperature such as a temperature of an external part of a cabinet.
  • the actuator driving the clutch can be installed in the laundry treatment apparatus by utilizing the space occupied by the driver.
  • the laundry treatment apparatus can drive the actuator in a manner that vibration or noise generated by the clutch can be reduced.
  • the laundry treatment apparatus can improve the reliability in operation when the drum is coupled to or separated from the driver by the clutch.
  • the laundry treatment apparatus can control the output of the actuator according to temperature.
  • FIG. 1 is a schematic diagram illustrating a clutch structure of a conventional laundry treatment apparatus.
  • FIG. 2 is a diagram illustrating a laundry treatment apparatus according to the present disclosure.
  • FIG. 3 is a diagram illustrating the operation principles of a driver and a clutch unit of the laundry treatment apparatus according to the present disclosure.
  • FIG. 4 is a diagram illustrating an installation structure of the clutch unit (C) and the driver of the laundry treatment apparatus according to the present disclosure.
  • FIG. 5 is a diagram illustrating one example of a structure that can operate even when the clutch unit (C) of the laundry treatment apparatus is installed in the driver 100.
  • FIG. 6 is a diagram the operation principles of the clutch unit (C) according to the present disclosure.
  • FIG. 7 illustrates a structure of a clutch of a laundry treatment apparatus according to an embodiment of the present disclosure.
  • FIG. 8 is a diagram illustrating that the clutch of the laundry treatment apparatus is detachably coupled to the rotor according to the present disclosure.
  • FIG. 9 is a diagram illustrating a coupling state of the clutch when a moving unit ascends in the clutch of the laundry treatment apparatus according to the present disclosure.
  • FIG. 10 is a diagram illustrating a coupling state when the moving unit ascends.
  • FIG. 11 is a diagram illustrating one embodiment of a structure for elevating the moving unit of the laundry treatment apparatus according to the present disclosure.
  • FIG. 12 is a diagram illustrating a coupling state when the moving unit ascends.
  • FIG. 13 is a diagram illustrating one embodiment of a sensor unit.
  • FIG. 14 is a diagram illustrating a coupling structure when the coupler ascends according to elevation of the moving unit.
  • FIG. 15 is a diagram illustrating one embodiment of a method for driving the actuator according to the present disclosure.
  • FIG. 16 is a diagram illustrating another embodiment of a method for driving the actuator according to the present disclosure.
  • FIG. 17 is a diagram illustrating another embodiment of a method for driving the actuator according to the present disclosure.
  • FIG. 18 is a diagram illustrating a method for driving the actuator according to the present disclosure.
  • FIG. 19 is a diagram illustrating the result of driving the actuator according to the present disclosure.
  • FIG. 2 is a diagram illustrating a laundry treatment apparatus according to the present disclosure.
  • the laundry treatment apparatus may include a cabinet 10 forming an external appearance thereof, a tub 20 provided in the cabinet 10 to store water, a drum 30 rotatably provided in the tub 20 to accommodate laundry, a water supply unit 50 provided to supply water to the tub 20, and a drain unit 60 to discharge water from the tub 20 to the outside of the cabinet 10.
  • the cabinet 10 may include an inlet 12 provided at an upper portion of the cabinet 10 in a manner that laundry is put into the tub through the inlet 12, and a door to open or close the inlet 12.
  • the cabinet 10 may include a control panel for receiving a command required to drive the laundry treatment apparatus.
  • the control panel may include a controller capable of controlling at least one of a driver 100 and a clutch (C) to be described later, or may be connected to the control panel and the controller.
  • the water supply unit 50 may include a water supply valve 51 coupled to the cabinet 10 to receive water from an external water supply source, a water supply pipe 52 extending from the water supply valve 51 to receive water, a detergent box 53 communicating with the water supply pipe 52 to receive detergent, and a water supply pipe 54 extending from the detergent box 53 to supply water to the tub 20.
  • the detergent box 53 may be provided in the cabinet 10, or may be provided in front of the cabinet 10.
  • the drain unit 60 may include a discharge pipe 61 communicating with a lower portion of the tub 20 to discharge water from the tub 20, a drain pump 62 communicating with the discharge pipe 61 to discharge water to the outside of the cabinet 10, and a drain pipe 63 extending from the drain pump 62 to the outside of the cabinet 10.
  • the laundry treatment apparatus may further include a suspension 70 for fixing the tub 20 to the inside of the cabinet 10.
  • the suspension 70 may include a support bar for coupling one side of the tub 20 to one surface of the cabinet 10, and a damper or spring coupled to the support bar to attenuate vibration.
  • the laundry treatment apparatus may further include an agitator 40 that is rotatably provided in the drum 30 to agitate laundry or to form a water stream.
  • the agitator 40 may be rotatably provided at the bottom surface of the drum 30, and may protrude to a predetermined height toward the inlet 12.
  • the laundry treatment apparatus may further include a driver 100 coupled to the tub 20 to provide power for rotating the agitator 40 and the drum 30, and a clutch unit (C) coupled to the driver 100 to transmit the power to at least one of the agitator 40 and the drum 30.
  • a driver 100 coupled to the tub 20 to provide power for rotating the agitator 40 and the drum 30, and a clutch unit (C) coupled to the driver 100 to transmit the power to at least one of the agitator 40 and the drum 30.
  • the clutch unit (C) may be disposed between the driver and the agitator 40 to selectively transmit the power of the driver 100 to at least one of the agitator 40 and the drum 30.
  • the clutch unit (C) may transmit the rotational force generated by the driver 100 to both the drum 30 and the agitator 40, or may transmit the rotational force generated by the driver 400 to any one of the drum 30 and the agitator 40.
  • the laundry treatment apparatus may determine whether to rotate both or any one of the drum 30 and the agitator 40 through control of the clutch unit (C).
  • the laundry treatment apparatus may allow the drum 30 and the agitator 40 to rotate in opposite directions through the clutch unit (C), or may rotate only the agitator 40 through the clutch unit (C).
  • the laundry treatment apparatus may enable the drum 30 and the agitator 40 to rotate integrally through the clutch unit (C).
  • FIG. 3 is a diagram illustrating the operation principles of the driver and the clutch unit of the laundry treatment apparatus according to the present disclosure.
  • the driver 100 of the laundry treatment apparatus may include a stator 110 (see FIG. 4) provided under the tub 20 to generate a rotating magnetic field, a rotor 120 rotated by the stator 110, and a drive shaft 130 to rotate by coupling to the rotor 120.
  • the rotor 120 may include a magnetic unit for generating rotational force by the rotating magnetic field generated by the stator 110, a rotor body 122 coupled to the magnetic unit or extending from the magnetic unit, and a seating unit 121 provided at the center of the rotor body 122 so that the drive shaft 130 is fixed or coupled thereto.
  • the seating unit 121 may include a bushing unit 160 for connecting the rotor 120 to the drive shaft 130.
  • the magnetic unit may include a permanent magnet or the like.
  • the clutch unit (C) of the laundry treatment apparatus may include a housing 300 provided with a gear unit that rotates while being engaged with the driver 100, a coupler 400 to rotate the housing 300 by selectively connecting the housing 300 and the driver 100, and a moving unit 500 to move the coupler 400 such that the driver 100 and the housing 300 can be detachably coupled to each other.
  • the clutch unit (C) may further include a cover unit 900 coupled to the bottom surface of the tub 20 so that the cover unit 900 can receive and protect the housing 300, the moving unit 500, and the intermediary unit 600.
  • the drive shaft 130 may include a shaft body 131 rotatably disposed in the housing 300, a first end portion provided at an upper end of the shaft body 131 and coupled to the gear unit 340, and a second end portion 133 provided at a lower end of the shaft body 132 and coupled to the rotor 120.
  • the shaft body 131 may be longer than the housing 300, and the second end portion 133 may be exposed outside the housing 300.
  • the housing 300 may include a guide housing 310 rotatably accommodating the drive shaft 130, a gear housing 320 extending from the guide housing 310 to accommodate the gear unit 340, and a rotary housing 330 extending from the gear housing 320 to accommodate the rotary shaft 200.
  • the guide housing 310 may be larger in size than the diameter of the drive shaft 130 so that the drive shaft 130 can freely rotate therein.
  • the rotary housing 330 may also be larger in size than the diameter of the rotary shaft 200 so that the rotary shaft 200 can freely rotate therein. As a result, the guide housing 310 may not rotate with the drive shaft 130 even when the drive shaft 130 rotates, and the rotary housing 330 may not rotate with the rotary shaft 200 even when the rotary shaft 200 rotates.
  • the housing 300 may rotate independently of the rotary shaft 200 and the drive shaft 130. Therefore, when the drum 30 is coupled to the housing 300, the drum 30 may not be affected by rotation of the rotary shaft 200 and the drive shaft 130.
  • the width of the gear housing 320 maybe larger than the diameter of each of the rotary housing 330 and the guide housing 310.
  • the entire housing 300 may be stably disposed below the tub 20.
  • the drum 30 may be coupled to the rotary housing 330.
  • a bottom surface of the drum 30 may be coupled to an outer circumferential surface of the rotary housing 330.
  • the rotary housing 330 may include a drum serration coupled to the bottom surface of the drum 30.
  • the housing 300 In order to rotate the drum 30, there is a need for the housing 300 to be selectively coupled to the driver 100. That is, when the housing 300 rotates by the driver 100, the drum 30 can rotate separately from the rotation of the rotary shaft 200. Accordingly, the drum 30 can rotate independently of the agitator 40.
  • the gear unit 340 may be coupled to or engaged with the first end unit 132 within the gear housing 320.
  • the gear unit 340 may include a sun gear 341 provided at the outer circumferential surface of the first end unit 132, at least two planetary gears 342 provided along the circumference of the sun gear 341 to rotate in engagement with the sun gear 341, a ring gear 343 provided in a ring shape to accommodate the planetary gears 342 and engaged with the planetary gears 342 at the inner circumferential surface thereof, and a carrier 344 rotatably provided in the gear housing 320 to provide rotary shafts of the planetary gears 342.
  • the sun gear 341 may be coupled to the first end unit. That is, the sun gear 341 may be provided to accommodate the first end unit 132.
  • the sun gear 341 may be provided integrally with the first end unit 132. That is, a serration may be provided on the outer circumferential surface of the first end unit 132 so that the sun gear 341 can be provided.
  • the sun gear 341 may be provided with the serration on the outer circumferential surface thereof, and may rotate at the same rpm (revolutions per minutes) as the drive shaft 130.
  • the sun gear 341 may have a disc-shaped cross-section, and the planetary gear 341 may also have a disc-shaped cross-section.
  • the ring gear 342 may be formed in a ring shape.
  • the ring gear 343 may have a larger diameter than the sun gear 341.
  • a plurality of planetary gears 342 may be disposed between the sun gear 341 and the ring gear 343.
  • the ring gear 343 may be fixed to the inner circumferential surface of the housing 300, or may rotate separately from the housing 300.
  • the planetary gear 342 may include a serration that can rotate by engaging with the sun gear 341 at the outer circumferential surface thereof.
  • the sun gear 343 may include a serration that can rotate by engaging with the planetary gear 342 at the inner circumferential surface thereof.
  • the rotary shaft 200 may be integrally provided with the carrier 344, and may be coupled to the carrier 344.
  • the rotary shaft 200 may be separated from the drive shaft 130. Therefore, even though the drive shaft 130 rotates, the rotary shaft 200 can independently rotate without being directly affected by the drive shaft 130.
  • the planetary gear 342 When the sun gear 341 rotates, the planetary gear 342 is engaged with the sun gear 341 to rotate in the opposite direction to the sun gear 341. At this time, the planetary gear 342 may also be engaged with the ring gear 343.
  • the ring gear 343 is fixed to the gear housing 320, the planetary gear 342 rotates in the same direction as the sun gear 341 along the circumference of the sun gear 341 by action and reaction.
  • the carrier 344 can rotate in the same direction as the sun gear 342 rotating along the circumference of the sun gear 341, and the carrier 344 can rotate in the same direction as the sun gear 341. Accordingly, the agitator 40 can rotate in the same manner as the sun gear 341.
  • the drum 30 may rotate in the opposite direction to the agitator 40, and the drum 30 may not rotate regardless of rotation of the agitator 40.
  • the drum 40 may rotates at the same rpm as the drive shaft 130 by the rotary housing 330, and the agitator 40 may also rotate at the same rpm as the drive shaft 130.
  • the guide housing 310 may be provided to rotate integrally with the gear housing 320.
  • the guide housing 310 may be coupled to and fixed to the gear housing 320, and may also be provided integrally with the gear housing 320.
  • the clutch unit (C) may include a coupler 400 capable of selectively connecting or coupling the housing 300 to the driver 100.
  • a coupling state in which the driver 100 and the housing 300 are coupled to each other by the coupler 400 may refer to a state in which power of the driver 100 can be transferred to the housing 300.
  • the coupling state may refer to a state in which the housing 300 rotates at the same rpm as the rotor 120 or the drive shaft 130 by the coupler 400.
  • the housing 300 may be spaced apart from the rotor 120 at an upper portion of the rotor 120, and may be provided to accommodate the drive shaft 130.
  • the coupler 400 may be provided to reciprocate between the guide housing 310 and the rotor 120.
  • the output of the driver 100 can be transmitted to the guide housing 310 without change.
  • the housing 300 may rotate at the same rpm as the rotor 120, and the drum 30 coupled to the housing 300 may also rotate in the same manner as the rotor 120.
  • the agitator 40 may also rotate in the same manner as the rotor 120.
  • the drum 30 and the agitator 40 may rotate integrally, so that a washing process, a rinsing process, a dehydration process, etc. can be performed.
  • the coupler 400 when the coupler 400 descends, the coupler 400 can separate the driver 100 and the guide housing 310 from each other. At this time, the coupler 400 may be completely seated on the seating unit 121.
  • the housing 300 does not rotate by the drive shaft 130, and only the gear unit 340 rotates so that the rotary shaft 200 and the agitator can rotate.
  • the agitator 40 can rotate independently of the drum 30, and a washing process, a rinsing process, etc. other than the dehydration process can be performed.
  • the coupler 400 may be provided to selectively connect the drive shaft 130 to the guide housing 310.
  • the coupler 400 will be described with reference to selective coupling between the guide housing 310 and the rotor 120.
  • the coupler 400 may be seated on the moving unit 500 to reciprocate between the guide housing 310 and the rotor 120. Upon receiving power from the actuator 800, the coupler 400 may allow the coupler 400 to ascend in a manner that the guide housing 310 and the rotor 120 can be coupled to each other, or may allow the coupler 400 to descend in a manner that the guide housing 310 and the rotor 120 can be separated from each other by the coupler 400.
  • the drive shaft 130 and the rotary shaft 200 may be rotatably supported by an inner bearing 150 accommodated in the housing 300.
  • the housing may be rotatably supported by an external bearing 160 installed at the bottom surface of the cover unit 900 or the tub 20.
  • the laundry treatment apparatus may allow the clutch unit (C) to overlap the driver 4, so that a space occupied by the clutch unit (C) separately from the driver 4 can be significantly reduced.
  • the laundry treatment apparatus may allow the clutch unit (C) to be installed in the driver in a manner that the driver 4 and the clutch unit (C) are arranged to overlap each other, so that the volume of the entire structure including the driver 4 and the clutch unit (C) can be minimized.
  • the clutch unit (C) is installed in the driver 4 so that the driver 4 and the clutch unit (C) can be manufactured as a single module.
  • FIG. 4 is a diagram illustrating an installation structure of the clutch unit (C) and the driver of the laundry treatment apparatus according to the present disclosure.
  • the clutch unit (C) of the laundry treatment apparatus may further include an actuator 800 for providing power to the moving unit 500.
  • At least a portion of the actuator 800 may be disposed inside the driver 100. In addition, at least a portion of the actuator 800 may be disposed to overlap the driver 100.
  • the clutch unit (C) and the driver 100 can be very densely designed.
  • the clutch unit (C) including the actuator 800 may be modularized to be assembled to the driver 100, and the driver 100 and the clutch unit (C) may be modularized and installed in the tub 20. Therefore, the installation process can be simplified.
  • the stator 110 may include a core 111 fixed to the tub 20 and allowing the drive shaft 130 to pass therethrough, a fixing rib 112 radially extending from the outer circumferential surface of the core 111 and having a coil wound thereon, a pole shoe 113 provided at a free end of the fixing rib 112 to face the rotor 120, and a terminal 114 fixed to the core 111 to supply current to the coil.
  • the core 111 may include an installation unit 115 that can be coupled to the bottom surface of the tub 20 or the bearing housing 23.
  • the installation unit 115 may be formed in a pillar shape and may extend from the core 111 toward the bottom surface of the tub 20.
  • the terminal 114 may be controlled by a controller of the laundry treatment apparatus to supply a three-phase current to the coil, so that the rotor 120 can rotate.
  • the cross-sectional area of the pole shoe 113 may be larger than the cross-sectional area of the fixing rib 112, and the coil may be prevented from being separated from the pole shoe 113.
  • At least a portion of the actuator 800 may be disposed in the core 111. Accordingly, the actuator 800 may be installed using the inner space of the stator 110, and may share the space occupied by the stator 110.
  • the clutch unit (C) of the laundry treatment apparatus may further include a sensor unit 900 for sensing whether the moving unit 500 ascends or descends.
  • the sensor unit 900 may be disposed in the driver 100, and the sensor unit 900 may also be installed in the core 111.
  • both the actuator 800 and the sensor unit 900 may be disposed in the core 111. Therefore, the sensor unit 900 may be installed using the inner space of the stator 110, and may share the space occupied by the stator 110.
  • the sensor unit 900 may be in direct contact with the moving unit 500 or the coupler 400 to sense whether the moving unit 500 or the coupler 400 ascends. Accordingly, the actuator 800 and the sensor unit 900 can be spaced apart from each other and separated from each other.
  • the coupler 400 may be seated in the moving unit 500 to ascend together with the moving unit 500.
  • the coupler 400 may be disposed to be accommodated in the moving unit 500.
  • the clutch unit (C) of the laundry treatment apparatus may further include a case 600 coupled to the driver 100 to accommodate the moving unit 500 so that the moving unit 500 can ascend. Accordingly, the coupler 400 may be accommodated in the case 600 so that the coupler 400 can be elevated by the moving unit 500.
  • the expression “elevate” includes the meaning of "reciprocate, ascend and descend, or move up and down”.
  • the case 600 may be installed in the core 111. Accordingly, the case 600 may be installed using the inner space of the stator 110, and may share a space occupied by the stator 110.
  • the clutch unit (C) may be installed using the inner space of the stator 110, and may share a space occupied by the stator 110. Therefore, the space occupied by the clutch unit (C) separately from the driver 100 may be omitted or reduced, thereby significantly reducing a space between the tub 20 and the driver 100.
  • the height of the tub 20 may further increase, and a distance (a spacing) between the driver 100 and the tub 20 may be further reduced in size.
  • the size of the clutch unit (C) may be entirely smaller in size than the diameter D1 of the driver.
  • the size of the clutch unit (C) may be entirely smaller in size than the diameter (D3) of the inner circumferential surface of the core 111.
  • a total diameter of the clutch unit (C) may be smaller than the core diameter (D3).
  • the clutch unit (C) may be disposed to overlap the height of the driver 100. That is, the clutch unit (C) may be disposed to overlap the height occupied by the stator 100.
  • the clutch unit (C) may be installed by maximally utilizing the space occupied by the stator 100. As a result, the volume occupied by the clutch unit (C) separately from the driver 100 can be minimized.
  • the clutch unit (C) may be coupled to or installed in the stator 110 to be installed in the laundry treatment apparatus.
  • the clutch unit (C) and the driver 100 may be manufactured as a single module. As a result, the installation process of the clutch unit (C) and the driver 100 may be greatly simplified.
  • FIG. 5 is a diagram illustrating one example of a structure that can operate even when the clutch unit (C) of the laundry treatment apparatus is installed in the driver 100.
  • the case 600 may include a receiving body 610 for guiding elevation of the moving unit 500 and the coupler 400, a coupling unit 630 extending from the receiving body 610 and coupled/fixed to the stator 110, and an elevation rib 640 provided at one surface of the receiving body 610 to support the moving unit 500.
  • the elevation rib 640 may be fixed to the case 600, and may be disposed anywhere in the case 600 to support the moving unit 500.
  • the receiving body 610 may be formed in a cylindrical shape or a pipe shape.
  • the receiving body 610 may be disposed in the moving unit 500 to guide elevation of the moving unit 500.
  • Each of the elevation ribs 640 may protrude from the outer circumferential surface of the receiving body 610, and the plurality of elevation ribs 640 may be spaced apart from each other along the outer circumferential surface of the receiving body 610.
  • the elevation rib 640 may be provided to support a load of the moving unit 500.
  • the moving unit 500 may include a movable body 510 that supports the coupler 400 and rotates by the actuator 800, and an elevation guide unit 520 provided to be supported by the elevation rib 620 to elevate the movable body 510.
  • the movable body 510 may be formed in a cylindrical shape or a pipe shape to accommodate the receiving body 610.
  • the elevation guide unit 520 may be supported by an upper end of the elevation rib 640 at one surface of the movable body 510.
  • the elevation guide unit 520 may be provided so that one surface of the movable body 510 protrudes or is inserted to be seated at the upper end of the elevation rib 640.
  • the elevation guide unit 520 may be provided along the inner circumferential surface of the movable body 510.
  • the elevation guide unit 520 may be provided to have different heights from the inner circumferential surface of the movable body 510. As a result, the elevation guide unit 520 can ascend or descend while sliding along the elevation rib 640.
  • the movable unit 500 may further include gear teeth 530 that can rotate by engaging with the actuator 800.
  • the gear teeth 530 may receive power generated by the actuator 800 at one surface of the movable body 510.
  • the gear teeth 530 may be provided at the outer circumferential surface of the movable body 510, and may be provided along the circumference of the movable body 510.
  • the gear teeth 530 may be formed in a serrated shape so as to be directly engaged with the actuator 800 at the surface of the gear teeth 530.
  • a separate intermediary unit for connecting the actuator 800 to the moving unit 500 may be omitted, and the actuator 800 may directly rotate the moving unit 500.
  • the actuator 800 can rotate the moving unit 500 by one or more rotations, and may transmit all outputs of the actuator 800 to the moving unit 500 without change.
  • the gear teeth 530 may protrude more thickly from the movable body 510 to the outside.
  • gear teeth 530 may also be thicker than the movable body 510.
  • the moving unit 500 may further include a contact unit 540 protruding outward from the surface of the movable body 510 such that the contact unit 540 can be in contact with the sensor unit 900.
  • the sensor unit 900 may be in direct contact with the moving unit 500 to sense the position of the moving unit 500. As a result, the sensor unit 900 can be separated from the actuator 800, and the position of the moving unit 500 can be more accurately sensed.
  • the coupler 400 may include a coupler body 410 seated in the movable body 510.
  • the coupler body 410 may be accommodated in the movable body 510, and may be formed in a cylindrical shape or a pipe shape.
  • An upper portion of the coupler body 410 may be provided with an extension support 411 seated on a top surface of the movable body 510, and a lower portion of the coupler body 410 may be provided with a rotor coupling unit 412 fixed to the rotor 120.
  • the extension support 411 may be larger in size than the diameter of the coupler body 410, and the rotor coupling unit 412 may include teeth or gear teeth to strengthen the coupling force with the rotor 120.
  • the bushing unit 160 of the rotor 120 may be formed in a shape that can be engaged with the rotor coupling unit 412.
  • the coupler body 410 is elevated together with the movable body 510, and at the same time the rotor coupling unit 412 can be detachably coupled to the bushing unit 160.
  • the rotor coupling unit 412 may be disposed not only at the bottom surface of the coupler body 410, but also at the outer circumferential surface of a lower portion of the coupler body 410. As a result, the rotor coupling unit 412 can be coupled not only to the upper end of the bushing unit 160, but also to the side surface of the bushing unit 160.
  • the coupler 400 may further include a shaft coupling unit 420 coupled to the housing 300.
  • the shaft coupling unit 420 may be accommodated in the coupler body 410, and may be detachably coupled to the outer circumferential surface of the guide housing 310.
  • the shaft coupling unit 420 may be formed in a cylindrical shape or a pipe shape, and may be smaller in size than a diameter of the coupler body 410.
  • the shaft coupling unit 420 may extend from the rotor coupling unit 412 toward the extension support unit 411.
  • the inner circumferential surface of the shaft coupling unit 420 may be provided with a coupling screw 421 that can be engaged with the outer circumferential surface of the guide housing 310, and the outer circumferential surface of the guide housing 310 may be provided with a serration that can be engaged with the coupling screw 421.
  • the shaft coupling unit 420 may also be coupled to the inner circumferential surface of the seating unit 121 of the rotor 120. That is, the inner circumferential surface of the bushing unit 160 of the rotor 120 may be provided with a serration that can rotate by engaging with the coupling screw 421.
  • the shaft coupling unit 420 may connect the rotor 120 to the detachable housing 330, and the detachable housing 330 may rotate with the rotor 120.
  • the shaft coupling unit 420 may be separated from the detachable housing 330, and the detachable housing 330 may not be constrained to the rotor 120.
  • a receiving groove 430 may be disposed between the inner circumferential surface of the coupler body 410 and the outer circumferential surface of the shaft coupling unit 420.
  • a restoring unit 700 for restoring the position of the coupler 400 may be disposed in the receiving groove 430.
  • One end of the restoration unit 700 may be in contact with the housing 300, and the other end of the restoring unit 700 may be in contact with the coupler 400.
  • the restoring unit 700 may be formed of an elastic material to generate a restoring force.
  • the restoring unit 700 when the coupler 400 ascends, the restoring unit 700 may be compressed, and when the moving unit 500 descends, the restoring unit 700 pushes the coupler 400 toward the moving unit 500 so that lower the coupler 400 descends.
  • the height of the coupler body 410 may be higher than the height of the shaft coupling unit 420.
  • the restoring unit 700 can prevent the coupler body 410 from being separated from the coupler body 410.
  • the actuator 800 and the sensor unit 640 may be seated in the case 600.
  • the actuator 800, the sensor unit 640, the coupler 400, and the moving unit 500 may all be installed in the case 600.
  • the case 600 may be configured as a module of one clutch unit (C).
  • the clutch unit (C) can be completely installed only by coupling the case 600 to the driver 100.
  • the height of the tub 20 can further increase, and a gap between the tub 20 and the driver 100 can be more densely arranged.
  • the actuator 800 may include a power generation unit 810 for generating power for rotating the moving unit 500.
  • the power generation unit 810 may directly contact the moving unit 500 to rotate the moving unit 500.
  • the actuator 800 may further include a transfer unit 820 to transmit the output of the power generation unit 810 to the moving unit 500.
  • the transfer unit 820 may further enlarge a contact area with the moving unit 500 as compared to the power generation unit 810.
  • the transfer unit 820 may be formed in a worm gear shape that can rotate while being engaged with the outer circumferential surface of the moving unit 500 in a tangential direction.
  • the case 600 may further include an outer body 620 that is disposed outside the receiving body 610 to prevent at least one of the actuator 800, the sensor unit 900, the moving unit 500, and the coupler 400 from being exposed to the outside.
  • the outer body 620 may be disposed parallel to the receiving body 610, and may have a larger diameter than the receiving body 610.
  • a space may be disposed between the outer body 620 and the receiving body 610, so that at least one of the actuator 800, the sensor unit 900, and the moving unit 500 can be seated or installed in the space.
  • the outer body 620 may be spaced apart from the inner circumferential surface of the core 111. As a result, air can flow between the outer body 620 and the inner circumferential surface of the core 110, thereby preventing the driver 100 from overheating.
  • the outer body 620 may be spaced farther apart from the inner circumferential surface of the core 110, except for a space in which the actuator 800 and the sensor unit are installed.
  • the coupling unit 630 may be implemented as a plurality of coupling units extending radially from the outer body 620.
  • the coupling units 630 may extend from the outer body 620 toward the inner circumferential surface of the core 111, and may be coupled to the core 111 so that the case 600 can be fixed to the inside of the stator 110.
  • the coupling units 630 may be spaced apart from the receiving body 610 at intervals of a predetermined angle obtained when 360 degrees are divided by the number of coupling units 630. As a result, the coupling units 630 may disperse a weight of the case 600, thereby supporting the case 600.
  • the case 600 may further include an upper cover 660 that accommodates at least one of the moving unit 500, the actuator 800, and the sensor unit 900 to prevent the moving unit 500, the actuator 800, and the sensor unit 640 from being separated or to prevent the installation position of the moving unit 500, the actuator 800, and the sensor unit 640 from varying.
  • the upper cover 600 may include a cover body 662 provided to shield an upper end of the case 600, and a fixing hook 661 provided on the outer circumferential surface of the cover body 662 and detachably coupled to the case 600.
  • the cover body 662 may include a hole through which the moving unit 500 and the coupler 400 can be drawn out or inserted, and may be provided to shield the upper end of the case 600.
  • the fixing hook 661 may be implemented as a plurality of fixing hooks 661 on the cover body 662, and the case 600 may further include a coupling hook 601 detachably coupled to the fixing hook 661.
  • the cover body 662 may be formed in a disc shape.
  • the upper cover 660 may further include an upper fixing unit 663 for coupling the cover body 662 to the inside of the core 111.
  • the upper fixing unit 663 may be implemented as a plurality of upper fixing units 663 extending radially from the cover body 662, and the plurality of upper fixing units 663 can be spaced apart from each other at intervals of a predetermined distance.
  • the upper fixing units 663 may be coupled to the upper end of the coupling unit 630, and may be provided corresponding in number to the coupling units 630.
  • a through-section through which air can flow can be secured between the coupling unit 630 and the driver 100, so that the heat dissipation effect of the driver 100 can be maximized.
  • the actuator 800 and the sensor unit 900 may not be installed between a specific coupling unit 630 and another coupling 630 adjacent to the specific coupling unit 630.
  • the heat radiation effect of the driver 100 can be maximized by securing many more through-sections.
  • the upper fixing unit 663 can also be implemented as three upper fixing units 663.
  • the upper fixing units 663 may include a first upper fixing unit 663a extending from the cover body 662 toward the core 111, a second upper fixing unit 663b spaced apart from the first upper fixing unit 663a and extending from the cover body 662 toward the core 111, and a third upper fixing unit 663c spaced apart from the first upper fixing unit 663a and the second upper fixing unit 663b and extending from the cover body 662 toward the cover 111.
  • the actuator 800 may be provided between the first upper fixing unit 663a and the second upper fixing unit 663b, and the sensor unit 900 may be provided between the second upper fixing unit 663b and the third upper fixing unit 663c.
  • a space penetrating the case 600 may be provided between the first upper fixing unit 663a and the third upper fixing unit 663c. As a result, the driver 100 can be prevented from overheating.
  • the actuator 800 and the sensor unit 9900 may be disposed concentrically between the first upper fixing unit 663a and the second upper fixing unit 663b.
  • FIG. 6 is a diagram (cross-sectional view) illustrating the operation principles of the clutch unit (C) according to the present disclosure.
  • the coupler 400 may be coupled to the outer circumferential surface of the detachable housing corresponding to a lower portion of the housing 300. Specifically, the outer circumferential surface of the guide housing 310 may be in contact with the inner circumferential surface of the coupler 400.
  • the outer circumferential surface of the guide housing 310 may be provided with a detachable serration that can be engaged with the coupling screw 321 provided on the inner circumferential surface of the shaft coupling unit 420 of the coupler 400.
  • the guide housing 310 and the coupler 400 can always be maintained in a coupled state.
  • the guide housing 310 may rotate by receiving force from the detachable serration through the coupling screw 421.
  • the coupler 400 may ascend or descend along the longitudinal direction of the guide housing 310.
  • the case 600 may be coupled to the tub 20 or to the driver 100, and the case 600 may be disposed outside the guide housing 310.
  • the lower end of the case 600 may be disposed parallel to the lower end of the guide housing 310, or may be disposed above the lower end of the guide housing 310.
  • the actuator 800 may be disposed at a side surface of the guide housing 310.
  • the actuator 800 may be seated in the case 600, and may be spaced apart from the outer circumferential surface of the guide housing 310 in a horizontal direction.
  • the power generation unit 810 and the transfer unit 820 may be spaced apart from one side of the guide housing 310 by a predetermined distance.
  • the actuator 800 may be engaged with the moving unit 500 to elevate the moving unit 500.
  • the moving unit 500 may be disposed between the actuator 800 and the outer circumferential surface of the guide housing 310, and may thus support the coupler 400.
  • the lower end of the guide housing 310 may be disposed to be spaced apart from the bushing unit 160.
  • the outer side of the bushing unit 160 may be coupled to the rotor 120, and the inner side of the bushing unit 160 may be coupled to the drive shaft 130.
  • the moving unit 500 may be elevated by the actuator 800, so that the coupler 400 can be spaced apart from the bushing unit 160. Accordingly, even when the rotor 120 rotates, the rotational force of the rotor 120 may not be transmitted to the housing 300.
  • the bushing unit 160 and the drive shaft 130 rotate such that the gearbox 340 such as the sun gear 341 and the planetary gear 342 may rotate, but the housing 300 may not rotate.
  • the agitator may rotate but the drum may not rotate.
  • the actuator 800 is driven so that the moving unit 500 can descend. Therefore, the coupler 400 may descend so that the coupler 400 can be coupled to the bushing unit 160.
  • the lower end of the coupler 400 may be coupled to the bushing unit 160, so that the housing 300 and the bushing unit 160 can be coupled to each other.
  • the bushing unit 160 rotates so that the coupler 400 can rotate.
  • the coupler 400 and the housing 300 may be serration-coupled to each other, and the coupler 400 can rotate the housing 300 so that the drum 30 can rotate.
  • the coupler 400 is detachably coupled to the bushing unit 160 or the rotor 120, and this means that the coupler 400 selectively rotates the housing 300.
  • FIG. 7 is a diagram illustrating a structure in which the coupler is spaced apart from or separated from the rotor.
  • the coupler 400 may include a coupler body 410 accommodated in the moving unit 500, and a shaft coupling unit 420 accommodated in the coupler body 410 and coupled to the outer circumferential surface of the housing 300.
  • the shaft coupling unit 420 is provided with the coupling screw 421 therein as described above, the shaft coupling unit 420 can be prevented from freely rotating in the housing 300.
  • a detachable serration provided at the outer circumferential surfaces of the coupling screw 421 and the housing 300 may be parallel to the drive shaft 130.
  • the lower end of the coupler body 410 may be provided with the rotor coupling unit 412 that can be coupled to the bushing unit 160.
  • the rotor coupling unit 412 and the bushing unit 160 may be coupled to each other in a concavo-convex shape.
  • the rotor coupling unit 412 and the bushing unit 160 can be engaged with each other to prevent occurrence of slip
  • the rotor coupling unit 412 and the bushing unit 160 may be provided in any form.
  • the rotor coupling unit 412 may include a plurality of coupling grooves 4122, each of which is recessed to a predetermined depth toward either the inner side of the coupler body 410 or the receiving groove 430 in which the restoring unit 700 is received.
  • the depth or length of each of the coupling grooves 4122 may correspond to the width of the receiving groove 4122.
  • the coupling grooves 4122 may be spaced apart from each other along the circumference of the rotor coupling unit 412. As a result, the lower end of the coupler body 410 may be provided with coupling protrusions 4121, each of which protrudes from a gap between the coupling grooves 4122.
  • the coupling protrusions 4121 may be provided to partition the plurality of coupling grooves 4122.
  • the bushing unit 160 may include a bushing body 161 coupled to the rotor 120 to rotate together, and a coupling unit 162 disposed in the bushing body 161 to be coupled to the rotor coupling unit 412.
  • the coupling unit 162 may be provided at the center of the bushing body 161, and may include a shaft through-hole 164 provided at the inner circumferential surface thereof so that the drive shaft 130 can pass therethrough.
  • the coupling unit 162 may have a diameter corresponding to the diameter of the coupler body 410, and may include at least one seating protrusion 1621 that can be inserted into the coupling groove 4122.
  • the seating protrusions 1621 may be provided to correspond to the position and number of the coupling grooves 422 so as to be inserted into the coupling grooves 4122, and a seating groove 1622 capable of receiving the coupling protrusion 4121 may be formed between the seating protrusions 1621.
  • the width of the seating groove 1622 may correspond to the width of the coupling protrusion 4121, and the width of the seating protrusion 1621 may correspond to the width of the coupling groove 4122.
  • the coupler 400 may come into contact with the bushing unit 160 while moving up, and may be coupled to the bushing unit 160 while being engaged with the bushing unit 160.
  • the rotational force of the bushing unit 160 may be transmitted to the coupler 400, and the coupler 400 may be prevented from freely rotating in the rotor 120 by the rotor coupling unit 412.
  • the bushing unit 160 may further include a coupling support 163 for allowing the coupling unit 162 to protrude, so that the coupler 400 and the coupling unit 162 can be more quickly coupled to each other and the rigidity of the coupling unit 162 can be reinforced.
  • the coupling support 163 may protrude from the bushing body 161, and may be formed in a ring shape.
  • the coupling support 162 may be formed in the coupling support 163.
  • the bushing unit 160 may further include a reinforcing rib 1611 protruding parallel to the drive shaft from the outer circumferential surface thereof.
  • the reinforcing rib 1611 may reinforce the rigidity of the bushing unit 160, and may increase coupling force with the rotor 120.
  • the bushing unit 160 may further include a rotor fixing unit 1612 that can be coupled to or inserted into the rotor 120, and a fastening groove 165 through which a fastening member coupled to the rotor 120 can pass.
  • FIG. 8 is a diagram illustrating that the clutch of the laundry treatment apparatus is detachably coupled to the rotor according to the present disclosure.
  • the coupler 400 ascends and presses the restoring unit 700.
  • the restoring unit 700 is disposed between the coupler 400 and the housing 300 and is pressed, the restoring unit 700 serves to push the coupler 400.
  • the rotor coupling unit 421 of the coupler 400 may be spaced apart from the coupling unit 162 of the bushing unit 160.
  • the coupler 400 can move toward the bushing unit 160.
  • the rotor coupling unit 421 may move to the coupling unit 162 due to the restoring portion 700.
  • the rotor coupling unit 421 when the rotor 421 rotates, the rotor coupling unit 421 is temporarily engaged with the coupling unit 162, and the restoring unit 700 may further push the rotor coupling unit 421 to be inserted into the coupling unit 162.
  • FIG. 9 is a diagram illustrating a structure in which the moving unit and the coupler are elevated in the case.
  • the moving unit 500 may be accommodated in the case 600, and the coupler 400 may be seated in the moving unit 500.
  • the receiving body 610 and the outer body 5620 of the case 600 may be shielded by the upper cover 600, and the moving unit 500 and the coupler 400 may be exposed by the upper cover 660.
  • the case 600 and the upper cover 600 may be detachably coupled to each other, and the upper cover 600 may be detachably coupled to a groove or a coupling hook 601 provided on the outer circumferential surface of the case 600 by the fixing hook 661.
  • the coupling hook 601 and the fixing hook 661 may be disposed in each gap between the coupling units 630.
  • the coupler When the moving unit 500 ascends in the case 600 by the actuator 800, the coupler may move toward the upper portion of the upper cover 660. In this case, the coupler 400 is separated from the rotor 120, the washing or rinsing process in which the agitator 40 rotates can be performed.
  • the actuator 800 may allow the moving unit 500 to descend, so that the coupler 400 moves toward the lower portion of the case 600.
  • the coupler 400 is coupled to the rotor 120, so that the dehydration process in which the agitator 40 and the drum 30 simultaneously rotate may be performed.
  • the inner circumferential surface of the receiving body 610 may be exposed by the case 600.
  • FIG. 10 is a diagram illustrating a structure in which the moving unit is elevated in the case.
  • the moving unit 500 may be accommodated in the case 600, and may be seated on the bottom surface of the case 600.
  • the actuator 800 may be engaged with the gear teeth 530 provided on the outer circumferential surface of the moving unit 500.
  • the actuator 800 may be configured such that the power generation unit 810 is engaged with the gear teeth 530
  • the power generation unit 810 is engaged with the transfer unit 820, and the transfer unit 820 may be engaged with the gear teeth 530.
  • the transfer unit 820 may be formed to have a gear ratio or a diameter in a manner that the rpm of the power generation unit 810 is reduced and torque of the power generation unit 810 can increase.
  • the sensor unit 900 may sense that the moving unit 500 descends in the case 600.
  • the moving unit 500 and the sensor unit 900 can be in contact with each other, and the sensor unit 900 can sense the position of the moving unit 500 while contacting or being separated from the moving unit 500.
  • the sensor unit 900 may detect a separation state in which the sensor unit 900 is separated from the moving unit 500.
  • the controller for controlling the sensor unit 900 or receiving signals from the sensor unit 900 can recognize an operation state in which the moving unit 500 descends in the case 600, and can also recognize a coupling state between the coupler 400 and the driver 100.
  • the elevation guide unit 520 of the moving unit 500 may be extended with a variable height from one surface of the moving unit 500.
  • the elevation guide unit 520 can be extended while moving between the upper end and the lower end along the inner circumferential surface of the moving unit 500.
  • the moving unit 500 can remain in a state in which the moving unit 500 descends in the case 600.
  • the moving unit 500 may rotate in one direction.
  • the elevation guide unit 520 may slide the upper end of the elevation rib 640. Since the elevation guide unit 520 is extended to have a variable height, the elevation guide unit 520 extending from the upper end to the lower end of the moving unit 500 can be supported by the elevation rib 640. As a result, when the moving unit 500 rotates, the moving unit 500 may be supported and elevated by the elevation rib 640.
  • the contact unit 540 protruding from the moving unit 500 may contact the sensor unit 900.
  • the sensor unit 900 can sense the situation where the moving unit 500 was elevated to a predetermined height or greater, and the controller can recognize the situation where the coupler was separated from the driver 100.
  • the moving unit 500 may again descend and return to the same state as in FIG. 10(a).
  • the gear teeth 530 of the moving unit 500 may be provided along the circumference of the moving unit 500. Therefore, the actuator 800 may rotate the moving unit by one or more rotations, and may consecutively rotate the moving unit 500 in one direction.
  • the moving unit 500 may repeatedly ascend and descend, and the coupler 400 may be repeatedly separated from or coupled to the driver 100.
  • the actuator 800 for use in the laundry treatment apparatus according to the present disclosure can directly rotate the moving unit 500.
  • the actuator 800 may transmit the generated rotational energy to the moving unit 500 without converting the rotational energy into rectilinear motion or reciprocating rotational motion having a predetermined angle.
  • a separate intermediary unit capable of converting the rotational energy generated by the actuator 800 into other energy may be omitted.
  • the spacing between the actuator 800 and the moving unit 500 becomes smaller in size or the actuator 800 and the moving unit 500 can be in contact with each other, so that the actuator 800 can be completely installed in the driver 100.
  • FIG. 11 is a diagram illustrating one embodiment of a structure in which the moving unit can be elevated in the case 600.
  • the case 600 may include a receiving body 610 for guiding elevation of the moving unit 500, an outer body 620 disposed outside the receiving body 610 to shield the moving unit 500, and a coupling unit 630 extending from the outer body 620 toward the outer circumferential surface thereof.
  • the outer body 620 may include a seating body 624 extending outward from the receiving body 610 and disposed under the moving unit 500, a shielding body 621 extending from the outer circumferential surface of the seating body 624 to accommodate the outer circumferential surface of the moving unit 500, an installation body 625 extending outward from the shielding body 621 to provide a space in which the actuator 800 or the sensor unit 900 is installed, and a blocking body 622 extending from the outside of the installation body 625 to shield the actuator 800 or the sensor unit 900.
  • the case 600 may include a motor installation unit 650 in which the actuator can be seated in the installation body 625, and a sensor installation unit 670 in which the sensor unit 900 can be installed.
  • the motor installation unit 650 may include a driving seating unit 651 in which the power generation unit 810 is seated, a first support 652 by which one end of the transfer unit 820 is supported, and a second support 653 by which the other end of the transfer unit 820 is supported.
  • Both ends of the transfer unit 820 may be rotatably disposed in the first support 652 and the second support 653, so that the transfer unit 820 can be engaged with the moving unit 500.
  • the sensor installation unit 670 may be provided such that each sensor structure can be seated according to the shape of the sensor unit 900.
  • the sensor unit 900 may be implemented as a switch in which current can flow in a plurality of conductive plates so that the current can be generated when the conductive plates are in contact with each other.
  • the sensor installation unit 670 may include a first installation unit 671 for fixing the first terminal, a second installation unit 672 for fixing the second terminal, and a third installation unit 673 for fixing the third terminal.
  • the coupling unit 600 may be implemented as a plurality of coupling units 600s extending radially from the outer body 620.
  • the coupling unit 600 may include a first coupling unit 631 extending outward from the outer body 620 and fixed to the core 111, a second coupling unit 632 spaced apart from the first coupling unit 631 and fixed to the core 111, and a third coupling unit 633 spaced apart from the first coupling unit 631 and the second coupling unit 632 and fixed to the core 111.
  • the first coupling unit 631, the second coupling unit 632, and the third coupling unit 633 may be spaced apart from each other at the same interval with respect to the receiving body 610.
  • the actuator 800 may be disposed between the second coupling unit 632 and the third coupling unit 633, and the sensor unit 900 may be disposed between the first coupling unit 631 and the third coupling unit 633. Therefore, a separate structure may not be disposed between the first coupling unit 631 and the second coupling unit 632.
  • the blocking body 622 and the installation body 625 may not be installed between the first coupling unit 631 and the second coupling unit 631. Accordingly, a communication space 627 may be disposed between the first coupling unit 631 and the second coupling unit 632 to dissipate heat from the driver 100.
  • the communication space 627 may be provided between the blocking body 622 and the core 111.
  • the shielding body 621 disposed between the first coupling unit 631 and the second coupling unit 632 corresponds to the outer circumferential surface, the communication space 627 may be provided more widely.
  • the actuator 800 and the sensor unit 900 may be disposed only between the first coupling unit 631 and the second coupling unit 632. That is, the actuator 800 and the sensor unit 900 are concentrically disposed only between a specific coupling unit 630 and the other coupling unit 630 adjacent to the specific coupling unit 630. In the space between the remaining coupling units 630, a larger communication space 627 from which the installation body and the blocking body 622 are omitted can be secured.
  • the coupling hook 601 may be provided on the outer surface of the case 600.
  • the coupling hook 601 may be provided on the outer circumferential surface of the blocking body 622, or may be provided on the outer circumferential surface of the shielding body 621.
  • the case 600 may include an elevation rib 640 capable of elevating the moving unit 500 by supporting the moving unit 500.
  • the elevation rib 640 may be provided in any of the receiving body 610, the seating body 624, and the shielding body 621 as long as it can support the moving unit 500.
  • the elevation rib 640 when the elevation rib 640 is provided in the receiving body 610, the elevation rib 640 may protrude from the outer circumferential surface of the receiving body 610.
  • the height of the elevation rib 640 may be equal to or smaller than the height of the receiving body 610.
  • the elevation ribs 640 may be spaced apart from each other at a predetermined angle along the circumference of the receiving body 610.
  • the elevation ribs 640 may be spaced apart from each other at a predetermined angle corresponding to 360/N degrees.
  • the moving unit 500 can be prevented from being tilted.
  • the elevation guide unit 520 may be provided on the inner circumferential surface of the movable body 510 to be supported by the elevation ribs 640.
  • the elevation guide unit 520 may include a low-point support 521 provided in the movable body 510 and a high-point support 523 disposed below the low-point support 521.
  • the high-point support 523 may be disposed adjacent to the lower end of the movable body 510, and the low-point support 521 may be disposed adjacent to the upper end of the movable body 510.
  • the low-point support 521 may be supported by the elevation rib 640 when the movable body 510 is at a low point.
  • the high-point support 523 may be supported by the elevation rib 640 when the movable body 510 is at a high point.
  • the high-point support 523 and the low-point support 521 may be spaced apart from each other so as not to overlap each other in the direction of the drive shaft.
  • the elevation rib 640 may move from the high-point support 523 to the low-point support 521, and moves from the low-point support 521 to the high-point support 532.
  • the low-point support and the high-point support 532 may further include an elevation support 522 and a descending support 524 by which the low-point support and the high-point support 532 are connected to each other.
  • the elevation support 522 may be supported by the elevation rib 640.
  • the elevation guide unit 520 may include an elevation support 522 connected from one end of the high-point support 523 to one end of the low-point support 521, and a descending support 524 connected from the other end of the high-point support 523 to the other end of the low-point support 521.
  • the low-point support 521 may extend from one end of the descending support 524 to the other one of the high-point support 523.
  • the moving unit 500 when the moving unit 500 is provided to rotate in one direction, the moving unit 500 may further include the elevation support 522 extending from the low-point support 521 toward the high-point support 523, and the descending support 524 extending from the high-point support 523 toward the low-point support 521.
  • the movable body 510 can ascend and descend.
  • the moving unit 500 may include a coupler support 550 for supporting the coupler 400 within the movable body 510.
  • the coupler support 550 may be implemented as a plurality of coupler supports 550 spaced apart from each other and formed to extend in the elevation support 520, and the coupler supports 550 may be formed to have the same height in top ends thereof.
  • the coupler 400 may be seated in the coupler support 550, and may be elevated together with the movable body 510.
  • FIG. 12 is a diagram illustrating a coupling state in which the moving unit ascends.
  • FIG. 12 illustrates one example of only the elevation rib 640 adjacent to the actuator 800.
  • the elevation rib 640 may be implemented as a plurality of elevation ribs 640.
  • the number of elevation ribs 640 may be set to 3, and three elevation ribs 640 may be spaced apart from each other at intervals of 120 degrees on the outer circumferential surface of the receiving body 610.
  • the elevation guide unit 520 may be provided to correspond to the elevation ribs 640.
  • the elevation guide unit 520 may be implemented as three elevation guide units, and may extend along the inner circumferential surface of the movable body 510.
  • the moving unit 500 may include a contact unit 530 engaged with the actuator 800 at the outer circumferential surface thereof.
  • the gear teeth 530 may include low-point gear teeth 531 engaged with the actuator 800 when the moving unit 500 is at a low point, and high-point gear teeth 533 engaged with the actuator 800 when the moving unit 500 is at a high point.
  • the low-point gear teeth 531 may be disposed below the high-point contact 533, and may be shorter in length than the axial length of the high-point gear teeth 533.
  • the gear teeth 530 may further include the ascending gear teeth 532 engaged with the actuator 800 when the moving unit 500 moves from the low point to the high point, and the descending gear teeth 534 engaged with the actuator 800 when the moving unit 500 moves from the high point to the low point.
  • the low-point support 521 may be supported by the elevation rib 640.
  • the low-point support 521 is implemented as a plurality of low-point supports 521, all of the low-point supports 521 can be supported by the elevation rib 640.
  • the actuator 800 may be in contact with the low-point gear teeth 531.
  • the moving unit 500 may rotate counterclockwise by the actuator 800.
  • the moving unit 500 may descend, so that the moving unit 500 may be located at the second height (II).
  • the actuator 800 may be engaged with the low-point gear teeth 531 from among the gear teeth 530.
  • the elevation rib 640 may be provided to support the lower end of the low-point support 521.
  • the actuator 800 When the actuator 800 is driven, the actuator 800 may rotate the moving unit 500 counterclockwise.
  • the actuator 800 may rotate the moving unit 500 in a counterclockwise direction by a predetermined angle. Specifically, the actuator 809 may rotate while being engaged with the low-point gear teeth 531. In this case, the actuator 800 may rotate the moving unit 500 in a manner that the bottom surface of the low-point support 521 slides the upper end of the elevation rib 640.
  • the actuator 800 may further rotate the moving unit 500. As a result, the actuator 800 can rotate while being engaged with the other end of the low-point gear teeth 531, and the bottom surface of the elevation support 522 can be seated on the elevation rib 640.
  • the elevation rib 640 may support one end through which the elevation support 522 is connected to the low-point support 521.
  • the actuator 800 When the actuator 800 further rotates the moving unit 500, the actuator 800 may rotate by engaging with the ascending gear teeth 532, and the elevation rib 640 may slide from the bottom surface of one end of the elevation support 522 to the bottom surface of the other end of the elevation support connected to the high-point support 523, and at the same time may support the elevation support 522.
  • a difference in height between the high-point support 523 and the low-point support 521 may be set to a difference between the first height (I) and the second height (II).
  • the elevation support 522 may be supported by the upper end of the elevation rib 640 in the range from the above-described one end to the above-described other end, and the moving unit may ascend to the first height (I) according to the slope of the elevation support 522.
  • the upper end of the elevation rib 640 may sequentially support the lower end of the elevation support 522 and the lower end of the high-point support 523 at the low-point support 521.
  • the actuator 800 may sequentially contact the elevation gear teeth 532 and the high-point gear teeth 533 at the low-point gear teeth 531.
  • the moving unit 500 may ascend to the highest position.
  • the sensor unit 900 may be in contact with the contact unit 540 to sense that the moving unit 500 is at a high point.
  • the actuator 800 when the actuator 800 further rotates the moving unit 500, the upper end of the elevation rib 640 may sequentially support the lower end of the descending support 524 and the low-point support 521 at the high-point support 523. As a result, the coupling state may return to the state of FIG. 11(a).
  • the actuator 800 when the actuator 800 further rotates the moving unit 500, the upper end of the elevation rib 640 may sequentially support the lower end of the descending support 524 and the low-point support 521 at the high-point support 523. As a result, the coupling state may return to the state of FIG. 11(a).
  • the moving unit 500 may descend to the lowest position.
  • the actuator 800 may sequentially contact the descending gear teeth 534 and the low-point gear teeth 531 at the high-point gear teeth 533.
  • the sensor unit 900 When the moving unit 500 descends, the sensor unit 900 may be spaced apart from the contact unit 540. As a result, the controller may detect that the moving unit 500 is at a low point.
  • the actuator 800 may be controlled by the controller, so that the actuator 800 can elevate the moving unit 500 while rotating the moving unit 500.
  • the high-point support 523 may have a first length or more so that the ascending height of the moving unit 500 can be maintained for a predetermined time.
  • the first length may correspond to a time at which the moving unit 500 can stay for a first time even if the moving unit 500 continuously rotates.
  • the low-point support 521 may have a length by which the low-point support 521 can stay for 0.5 seconds or more.
  • the low-point support 521 may have at least a second length by which the descending height of the moving unit 500 is maintained for a predetermined time.
  • the second length may correspond to a time at which the moving unit 500 can stay for a second time even if the moving unit 500 continuously rotates.
  • the second time may be 0.5 seconds.
  • the slope of the elevation support 522 may be gentler than the slope of the descending support 524.
  • the length of the elevation length 522 may be longer than the length of the descending support 524.
  • the moving unit 500 can slowly ascend.
  • the moving unit 500 may guide the coupler 400 to be stably separated from the rotor 120, and the actuator 800 may stably support the load of the coupler 400 and the moving unit 500 and at the same time can elevate the coupler 400 and the moving unit 500.
  • the coupler 400 can ascend by stably overcoming elastic force of the restoring unit 700 and can ascend.
  • the gear teeth 530 may be disposed to correspond to the shape and length of the elevation guide unit 520.
  • the arrangement of the gear teeth 530 may not exactly match the arrangement of the elevation guide unit 520.
  • the gear teeth 530 may be arranged alternately with the elevation guide unit 520.
  • the lengths and slopes of the low-point gear teeth 531, the ascending gear teeth 532, the high-point gear teeth 533, and the descending gear teeth 534 may correspond to the lengths and slopes of the low-point support 521, the ascending support 522, the high-point support 523, and the descending support 524.
  • the actuator 800 may further rotate the moving unit 500, the actuator 800 may be engaged with the high-point gear teeth 523, and the bottom surface of the high-point support 423 may be supported by the upper end of the elevation rib 640.
  • the moving unit 500 may maintain the first height (I).
  • the moving unit 500 may maintain the first height (I) until one end connected to the elevation support 522 of the high-point support 523 and the other end connected to the descending support 524 are supported by the elevation rib 640.
  • the sensor unit 900 may generate a signal for driving the actuator 800.
  • the actuator 800 may be re-engaged with the descending gear teeth by re-rotating the moving unit 500, and the elevation rib 640 may support the bottom surface of the descending support 524.
  • the actuator 800 rotates by engaging with the descending gear teeth 534, the elevation rib 640 slides and supports one end connected to the high-point support 523 of the descending support 524 and the other end connected to the low-point support 521. Therefore, the moving unit 500 may descend from the first height (I) to the second height (II).
  • the moving unit 500 may return to the state of FIG. 12(a).
  • the moving unit 500 may maintain the second height (II).
  • the moving unit 500 may maintain the second height (II) until the other end of the low-point support 521 is supported by the elevation rib 640.
  • the sensor unit 900 may generate a signal for stopping operation of the actuator 800.
  • the actuator 800 can continuously rotate the moving unit 500 in the same direction, and can allow the moving unit 500 to repeatedly ascend and descend.
  • the actuator 800 may rotate the moving unit 500 in the same direction by one or more rotations.
  • the moving unit 500 can repeatedly ascend and descend N times while rotating once.
  • the first height may correspond to a high point of the moving unit 500.
  • the first height may correspond to a height at which the coupler 400 is separated from the rotor 120. That is, the first height may not be a high point.
  • the second height may correspond to a low point of the moving unit 500.
  • the second height may correspond to a height at which the coupler 400 is coupled to the rotor 120. That is, the second height may correspond to a height lower than the first height. In addition, the second height may not be a low point.
  • the sensor unit 900 of the laundry treatment apparatus may be provided to sense the height or position of the coupler 400 or the moving unit 500.
  • the sensor unit 900 of the present disclosure contacts the actuator 800 or senses the position of the actuator 800, so that the position of the coupler 400 is not indirectly sensed and calculated.
  • the sensor unit 900 of the laundry treatment apparatus may directly contact the coupler 400 or the moving unit 500 to detect the height of the coupler or the moving unit. As a result, the accuracy and reliability of the sensor unit 900 configured to detect the position or height of the coupler 400 or the moving unit 500 can increase.
  • the sensor unit 900 of the laundry treatment apparatus can more accurately sense whether the coupler 400 couples the housing 300 to the rotor 120 or separates the housing 300 from the rotor 129.
  • the sensor unit 900 of the laundry treatment apparatus can accurately sense the position of the coupler 400 even when the actuator 800 is restrained or damaged.
  • the sensor unit 900 of the laundry treatment apparatus since the sensor unit 900 of the laundry treatment apparatus operates independently of the actuator 800, the sensor unit 900 can be spaced apart from the actuator 800. Therefore, the sensor unit 900 of the laundry treatment apparatus can sense whether the coupler 400 or the moving unit 500 ascends while being spaced apart from the actuator 800.
  • the sensor unit 900 and the actuator 800 can be spaced apart from each other, the sensor unit 900 and the actuator 800 can be easily separated from each other even if the inner space of the case 600 is relatively smaller in size.
  • the space inside the driver 100 can be effectively utilized.
  • FIG. 13 is a diagram illustrating one example of the sensor unit.
  • the sensor unit 900 can be in contact with the moving unit or can be separated from the moving unit.
  • the high point and the low point of the coupler 400 can be clearly recognized by the sensor unit 900 through either the ON/OFF signal generated when the sensor unit 900 is in contact with or is separated from the moving unit 500 or a binary signal.
  • the sensor unit 900 may be spaced apart from the upper end and the lower end of the moving unit 500, and may be formed to contact a side surface of the moving unit 500.
  • the sensor unit 900 may be provided to contact the moving unit 500 when the moving unit 500 reaches any one of the high point and the low point, and may be separated from the moving unit 500 when the moving unit 500 reaches the remaining one of the high point and the low point.
  • the moving unit 500 may be located at a low point, so that the low-point support 521 from among the elevation support 520 can be supported by the elevation rib 640.
  • the sensor unit 900 may be spaced apart from the moving unit 500 when the moving unit 500 is at the low point. However, when the moving unit 500 moves from the low point to the high point, the sensor unit 900 may be provided to contact the moving unit 500.
  • the sensor unit 900 may be provided with a plurality of conductive plates through which current can flow.
  • the sensor unit 900 may include a second terminal 920 selectively contacting the moving unit 500, and a first terminal 910 spaced farther from the moving unit 500 than the second terminal 920 and provided to be in contact with the second terminal 920.
  • the first terminal 910 and the second terminal 920 may be disposed at the same height.
  • the first terminal 910 and the second terminal 920 may be implemented as a switch in which current flows when the first terminal 910 and the second terminal 920 contact each other or does not flow when the first terminal 910 and the second terminal 920 are spaced apart from each other.
  • the controller for receiving signals from the sensor unit 900 may sense and calculate the state of the moving unit 500 through ON/OFF states of the electrical signal.
  • the second terminal 920 may remain spaced apart from the moving unit 500. Specifically, the second terminal 920 may remain spaced apart from a side surface of the moving unit 500 by a predetermined distance.
  • the second terminal 920 can also be located higher than the upper surface of the moving unit 500.
  • the contact unit 540 can pressurize the sensor unit 900.
  • the contact unit 540 may be disposed at a position where the sensor unit 900 is pressed.
  • the position where the contact unit 540 protrudes from the moving unit 500 may be automatically determined when the installation position of the sensor unit 900 is determined.
  • the contact unit 540 may protrude from the movable body 510 to press (or pressurize) the sensor unit 900.
  • the contact unit 540 may protrude from the outer circumferential surface of the movable body 510.
  • the contact unit 540 may also be disposed at a position where the movable unit 500 can contact the sensor unit 900 when the moving unit 500 deviates from a low point.
  • the installation position of the contact unit 540 may vary depending on the installation position of the sensor unit 900.
  • the second terminal 920 When the moving unit 500 ascends to the first height (I), the second terminal 920 may be pressed against the contact unit 540 to be bent toward the first terminal 910, and the second terminal 920 may be in contact with the first terminal 910. As a result, the sensor unit 900 may be electrically turned on to generate the ON signal.
  • any one of the upper end and the lower end of the contact unit 540 may be opened or a through-hole 543 formed to penetrate the contact unit 540 may be provided. Accordingly, even when the contact unit 540 is injection-molded to protrude from the movable body 510, the shape or thickness of the contact unit 540 can be prevented from being changed during a cooling mode.
  • the second terminal 920 may further include a bent portion (a) that is bent toward the movable body 510 so that the second terminal 920 can more effectively contact the contact unit 540 through the bent portion (a).
  • a bent portion that is bent toward the movable body 510 so that the second terminal 920 can more effectively contact the contact unit 540 through the bent portion (a).
  • the sensor unit 900 may receive power by connecting to a circuit supplying for power to the actuator 800.
  • the sensor unit 900 may be provided to block current supply to the actuator 800.
  • the sensor unit 900 may be provided to cut off the current supply of the actuator 800.
  • the moving unit 500 is prevented from rotating and stops at the target position.
  • the target position may be at least one of a high point (top dead center) or a low point (bottom dead center).
  • the sensor unit 900 may also be controlled by receiving power from a circuit supplying power to the driver 100.
  • FIG. 14 is a diagram illustrating a structure for enabling the coupler to elevate in response to elevation of the moving unit.
  • the coupler 400 may be seated on the moving unit 500, or may be disposed in the moving unit, so that the coupler 400 may elevate together with the moving unit 500.
  • the low-point gear teeth 531 of the moving unit 500 are engaged with the actuator 800, and the coupler 400 is disposed at a low point together with the moving unit 500.
  • the sensor unit 900 may be completely spaced apart from the moving unit 500, and the controller may recognize a state in which the driver 100 and the housing 300 are coupled to each other by the coupler 400.
  • the actuator 800 when the moving unit 500 rotates by the actuator 800, the actuator 800 is engaged with the high-point gear teeth 533, and the coupler 400 may be disposed at a high point together with the moving unit 500.
  • the sensor unit 900 may be in contact with the contact unit 540, and the controller may detect that the moving unit 500 and the coupler 400 are at the high point and are separated from the rotor 120.
  • the contact unit 540 may include a first contact unit 541 protruding from the movable body 510.
  • the first contact unit 541 may be in contact with the sensor unit 900 when the movable body 510 is at a high point. Therefore, the first contact unit 541 can be defined as a high-point contact unit.
  • the upper portion of the movable body may support the coupler 400, and the lower portion of the movable body 510 should be spaced apart from the case 600 by a predetermined distance. Accordingly, it is preferable that the contact unit 540 protrude from the side surface of the movable body 510, and that the first contact unit 541 protrude between the upper end and the lower end of the movable body 510.
  • the first contact unit 541 may be disposed at a position where the movable body 510 can contact the sensor unit 900 when the movable body 510 is located at a high point or a first height.
  • the sensor unit 900 may be provided to be in contact with the first contact unit 541 when the movable body 510 is located at a high point.
  • the sensor unit 900 may be fixed to the case 600 so that the movable body 510 can be disposed between the upper end and the lower end of the movable body 510 when the movable body 510 is located at a high point.
  • the contact unit 540 may include a second contact unit 542 extending from the first contact unit 541 to the upper end of the movable body 510.
  • the second contact unit 542 may extend in a direction opposite to the rotational direction of the movable body 510, and may extend with a slope corresponding to a slope of the descending support 524.
  • the second contact unit 542 may allow the sensor unit 900 to remain in contact with the moving unit 500 until the sensor unit 900 descends to a predetermined height or a second height lower than the first height.
  • the signal of the sensor unit 900 can be continuously maintained until the moving unit 500 moves from the high point to a point located just before the low point or moves from the high point to a point located just before a coupling point between the coupler 400 and the driver 100, so that a time point where the moving unit 500 is located at the low point or a time point where the coupler 400 is coupled to the driver 100 to rotate the housing 300 can be accurately detected.
  • the controller detects a high point, so that the coupler 400 is separated from the driver 100 and the controller can sense an operation state in which only the agitator can rotate. After sensing the operation state, although the moving unit 500 descends, only the agitator can rotate until the coupler 400 is coupled to the driver 100, so that the sensor unit 900 can maintain the ON state thereof by the second contact unit.
  • the controller may recognize that the coupler 400 descends and is then coupled to the driver 100.
  • the second contact unit 542 may be configured to maintain the signal of the sensor unit 900 until the coupler starts to be coupled to or seated in the driver 100.
  • the sensor unit 900 may remain separated from the moving unit 500 until the sensor unit 900 is elevated from the second height to the first height. That is, the sensor unit 900 can be separated from the contact unit 540 until the moving unit 500 ascends to the first height and the sensor unit 900 contacts the first contact unit 541.
  • the sensor unit 900 may start to generate the ON signal only when the moving unit 500 is located at a first height or a high point. As a result, the sensor unit 900 is spaced apart from the driver 100 so that the sensor unit 900 can reliably detect a state of the housing 300 separated from the driver 100.
  • the sensor unit 900 may be in contact with the contact unit 540 to generate the ON signal. Also, until just before the state of FIG. 14(a), the sensor unit 900 may contact the second contact unit 542. When the moving unit 500 further descends, the sensor unit 900 may be separated from the second contact unit 542 or may be disposed above the second contact unit 542, thereby generating the OFF signal.
  • the controller can accurately sense whether the coupler 400 is fully coupled to the driver 100 through the ON/OFF signal of the sensor unit 900.
  • the contact unit 540 may further include a third contact unit extending from the second contact unit 541 in parallel along the upper end of the movable body 510. Accordingly, the sensor unit 900 can remain in contact with the contact unit 540 until just before the upper end of the movable body 510 becomes lower in height than the sensor unit 900.
  • the third contact may be omitted.
  • FIG. 15 is a diagram illustrating one embodiment of a method for operating the actuator 800.
  • the actuator 800 may remain in an ON state until the moving unit 500 moves from the low point to the high point, so that the actuator 800 can continuously operate.
  • the drive motor 810 may be continuously driven so that the moving unit 50 ascends from the second height (II) to the first height (I).
  • the moving unit 500 can separate the coupler 400 from the driver 100 while being rotated by the actuator 800.
  • the actuator 800 may remain in the ON state until the moving unit 500 moves from the high point to the low point, so that the actuator 800 can continuously operate.
  • the drive motor 810 may be continuously driven so that the moving unit 500 can descend from the first height (I) to the second height (II).
  • the actuator 800 may directly rotate the moving unit 500 while being in contact with the moving unit 500. Therefore, when the actuator 800 is continuously driven, the moving unit 500 can also continuously rotate.
  • the drive motor 810 may be implemented as an AC motor or a DC motor. Therefore, the drive motor 810 can rotate at a very high rpm upon receiving a current as an input.
  • the transfer unit 820 is provided to transmit power of the drive motor 810 to the moving unit 500, the transfer unit 820 may rotate the moving unit 500 while rotating at a relatively high rpm.
  • the moving unit 500 can repeatedly ascend and descend while being continuously rotated. Moreover, when the moving unit 500 rotates too fast, the moving unit 500 may more rapidly perform ascending and descending.
  • the moving unit 500 may continuously rotate without stoppage, and even after the moving unit 500 reaches a low point, the moving unit 500 can further rotate.
  • FIG. 16 is a diagram illustrating another embodiment of a method for controlling the actuator 800.
  • the controller of the laundry treatment apparatus can control the actuator 800 using an electrical signal, may control the ON/OFF operations of the actuator depending on whether the actuator is supplied with current, and may control the ON/OFF operations of the actuator 800 through a separate switch.
  • the actuator 800 can be repeatedly driven and stopped when the moving unit 500 ascends or descends.
  • the actuator 800 When the moving unit 500 ascends, the actuator 800 is turned on during a first driving time (a), is turned off and stopped during a first stoppage time (b), and is again turned on and driven during the first driving time (a). In this way, the above-described operations of the actuator 800 can be repeated until the moving unit 500 reaches a high point.
  • the actuator 800 is turned on and driven during the first driving time (a) even when the moving unit 500 descends, is turned off and stopped during the first stoppage time (b), and is again turned on and driven during the first driving time (a). In this way, the above-described operations of the actuator 800 can be repeated until the moving unit 500 reaches a low point.
  • the moving unit 500 may ascend or descend during the first driving time (a), may stop operation during the first stoppage time (b), and may ascend or descend during the first driving time (a).
  • the first stoppage time (b) may be set to a time corresponding to the first driving time (a).
  • the actuator 800 may stop at least three times. Therefore, the actuator 800 can be prevented from excessively rotating the moving unit 500.
  • the actuator 800 may extend a time for allowing the moving unit 500 to ascend from a low point to a high point, or may extend a time for allowing the moving unit 500 to descend from a high point to a low point, so that the actuator 800 can implement the same effect as in the case where the rpm of the actuator 800 is reduced.
  • the actuator 800 is turned on and driven, the actuator 800 is driven at the highest output level, so that the output level of the actuator 800 can be utilized without change.
  • the actuator 800 can precisely elevate the moving unit 500 while sufficiently overcoming the load of the moving unit 500 or the elastic force of the restoring unit 700.
  • the actuator 800 is implemented as a simple DC motor incapable of controlling the rpm, the effect for controlling the rpm of the actuator 800 can be obtained, so that the moving unit 500 can be prevented from rotating at a very high rpm so that the moving unit 500 does not escape from a target point.
  • the moving unit 500 may slowly descend so that the coupler 400 can be correctly coupled to the rotor 120.
  • the controller may control the actuator 800 to be turned off so that the position of the moving unit 500 can be fixed.
  • the controller may fix the position of the moving unit 500 by turning off the actuator 800.
  • the controller can more correctly turn off the actuator 800 when the moving unit 500 reaches a high point or a low point.
  • FIG. 17 is a diagram illustrating another embodiment of a method for controlling the actuator 800.
  • the actuator 800 may be controlled to repeat driving and stoppage thereof when the moving unit 500 ascends or descends.
  • the actuator 800 When the moving unit 500 ascends by the actuator 800, the actuator 800 is turned on and driven during the first driving time (a), is turned off and stopped during a second stoppage time (d), and is again turned on and driven during the first driving time (a). In this way, the above-described operations of the actuator 800 can be repeated until the moving unit 500 reaches a high point.
  • the second stoppage time (d) may be set to be longer than the first driving time (a). Therefore, when the moving unit 500 ascends from a low point to a high point by the actuator 800, or when the moving unit 500 descends from a high point to a low point by the actuator 800, a time during which the actuator 800 is stopped can be set to be longer than a time during which the actuator 800 is driven.
  • the actuator 800 is intermittently driven, the time for which the actuator 800 stops operation can be sufficiently guaranteed, and the height to which the moving unit 500 ascends and the height to which the moving unit 500 descends can be more precisely controlled.
  • the actuator 800 is implemented as a motor capable of generating a higher output, the position of the moving unit 500 can be precisely controlled, resulting in increase in performance of the clutch (c).
  • FIG. 18 is a diagram illustrating one embodiment of a method for elevating the moving unit 500 by the actuator 800.
  • the driving time of the actuator 800 and the stoppage time of the actuator 800 can be controlled differently.
  • the moving unit 500 when the moving unit 500 descends by the actuator 800, the moving unit 500 may be driven during a reference time (t1) and then stopped during a specific time (t2). In this way, the above-mentioned driving and stoppage of the moving unit 500 can be repeated.
  • the specific time (t2) may be equal to or longer than the reference time (t1).
  • the actuator 800 can descend more slowly than the case in which the actuator 800 is continuously driven without stoppage. Also, when the moving unit 500 reaches a low point, driving of the actuator 800 can be more accurately stopped.
  • the coupler 400 is precisely seated on the rotor 120, so that the position of the coupler 400 can be fixed.
  • the actuator 800 is controlled in a manner that the moving unit 500 is driven during a set time (t3) and stopped during a standby time (t4) so that the operation of driving and stopping the moving unit 500 can be repeated.
  • the standby time (t4) may be set to be equal to or longer than the set time (t3).
  • the standby time (t4) may be set to be equal to or longer than the set time (t3).
  • the actuator 800 can ascend more slowly than the case in which the actuator 800 is continuously driven without stoppage. Also, when the moving unit 500 reaches a high point, the actuator 800 can be more accurately driven.
  • the coupler 400 can ensure that the coupler 400 is separated from the rotor 120.
  • the actuator 800 may be controlled such that the time for elevating the moving unit 500 is longer than the time for lowering the moving unit 500.
  • the sum of the set time (t3) and the standby time (t4) may be set to be longer than the sum of the reference time (t1) and the specific time (t2).
  • the ascending length of the moving unit 500 may be shorter than the descending length of the moving unit 500.
  • the sum of the set time (t3) and the sum of the standby time (t4) may be set to be longer than the sum of the reference time (t1) and the sum of the specific time (t2).
  • the time for which the moving unit 500 ascends may be set to be longer than the time for which the moving unit 500 descends.
  • the standby time (t4) may be set to be longer than the specific time (t2). That is, the standby time required when the moving unit 500 ascends may be set to be longer than the time required when the moving unit 500 descends.
  • the reference time (t1) and the set time (t3) may be set to be equal to each other, or the reference time (t1) may be set to be longer than the set time (t3).
  • the moving unit 500 when the moving unit 500 ascends, the moving unit 500 can stably ascend while sufficiently overcoming the elastic force of the restoring unit 700 and the load of each of the moving unit 500 and the coupler 400.
  • the moving unit 500 descends more slowly than the case where the actuator 800 is continuously driven, but descends more rapidly than the other case where the moving unit 500 ascends, so that the driver 100 and the housing 300 can be coupled to each other by the coupler 400.
  • the actuator 800 may be controlled to stop operation during a low-point sensing time TS1.
  • the controller connected to the sensor unit 500 may recognize that the moving unit 500 has reached a low point. Therefore, the controller may control the actuator 800 to stop operation during the low-point sensing time TS1.
  • the high-point sensing time TS1 may be set to be longer than the specific time (T2). Therefore, the controller may further secure a time for confirming whether the moving unit 500 reaches the low point.
  • the controller may more precisely analyze the signal of the sensor unit 800 during the low-point sensing time TS1 to determine whether the moving unit 500 is at a low point. For example, the controller may drive the driver 100 to sense whether the pulsator and the drum rotate together.
  • the controller may further drive the actuator 800.
  • the actuator 800 may stop operation until a process in which the drum and the pulsator rotate independently of each other is started.
  • the actuator 800 may be controlled to stop operation during the sensing time TS2.
  • the controller coupled to the sensor unit may recognize that the moving unit 500 has reached the high point. Therefore, the controller may stop operation of the actuator 800 during the high-point sensing time TS2.
  • the high-point sensing time TS2 may be set to be longer than the standby time T4. Therefore, the controller may further secure a time for confirming whether the moving unit 500 has reached the high point.
  • the controller may more precisely analyze the signal of the sensor unit 800 during the high-point sensing time TS2 to determine whether the moving unit 500 is at a high point.
  • the controller may drive the driver 100 to detect whether the pulsator and the drum rotate independently.
  • the controller may further drive the actuator 800.
  • the actuator 800 may stop operation until the drum and the pulsator rotate together.
  • FIG. 19 is a diagram illustrating a method for operating the moving unit 500 using the actuator 800.
  • the actuator 800 may repeatedly perform the operation in which the actuator 800 is driven during a reference time and transitions to a standby mode during a specific time.
  • the moving unit 500 may rotate so that the elevation rib 640 can support the descending support 524 and at the same time can move toward the low-point support 521.
  • the time during which the elevation rib 640 moves from the high-point support 523 to the low-point support 521 can be defined as a first time (t).
  • the actuator 800 may stop operation during the low-point sensing time TS1.
  • the actuator 800 may repeatedly perform the operation in which the actuator 900 is driven during a set time and stopped during a standby time.
  • the moving unit 500 may rotate so that the elevation rib 640 can support the ascending support 522 and at the same time can move toward the high-point support 523.
  • the time during which the elevation rib 640 moves toward the high-point support 523 may be longer than the first time (t).
  • the time during which the elevation rib 640 moves toward the high-point support 523 may be longer than the first time (t).
  • the moving unit 500 moving from the low point to the high point may consume a longer time than the first time (t).
  • the time consumed for movement of the moving unit 500 may be about 1.5 to 4 times longer than the first time (t).
  • the moving unit 500 can rapidly descend so that the coupler 400 can be coupled to the driver 100, or can slowly descend so that the coupler 400 can be stably separated from the driver 100.
  • the rpm or the output of the drive motor 810 of the actuator 800 may change with temperature. For example, if the temperature at which the drive motor 810 is installed is low, the degree of overheating of the drive motor 810 is also low, so that the output of the drive motor 810 becomes stronger.
  • the controller may allow the time for driving the drive motor 810 and the time for stopping the drive motor 810 to be changed differently according to various types of the temperature sensors.
  • the standby time (t4) and the specific time (t2) may become longer.
  • the standby time (t4) and the specific time (2) may become shorter.
  • the standby time (t4) and the specific time (t2) may become longer.
  • the standby time (t40 and the specific time (t2) may become shorter.
  • the specific temperature may be 0 degrees Celsius.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Main Body Construction Of Washing Machines And Laundry Dryers (AREA)

Abstract

L'invention concerne un appareil de traitement de linge comprenant un dispositif d'entraînement configuré pour fournir de l'énergie pour la rotation d'un tambour. Dans le dispositif d'entraînement, un embrayage pour la fourniture sélective d'énergie au tambour et un actionneur pour la fourniture d'énergie à l'embrayage sont disposés simultanément.
PCT/KR2021/019789 2020-12-24 2021-12-24 Appareil de traitement de linge WO2022139536A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020200182852A KR102480298B1 (ko) 2020-12-24 2020-12-24 의류처리장치
KR10-2020-0182852 2020-12-24

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WO2022139536A1 true WO2022139536A1 (fr) 2022-06-30

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KR (1) KR102480298B1 (fr)
WO (1) WO2022139536A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20110012787A (ko) * 2009-07-31 2011-02-09 삼성전자주식회사 세탁기 및 그 제어방법
US20160010265A1 (en) * 2013-04-30 2016-01-14 New Motech Co., Ltd. Driving apparatus for washing machine
KR20190124937A (ko) * 2018-04-27 2019-11-06 엘지전자 주식회사 의류처리장치
KR102123429B1 (ko) * 2019-01-16 2020-06-16 엘지전자 주식회사 세탁기
KR20200082340A (ko) * 2018-12-28 2020-07-08 엘지전자 주식회사 세탁기

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20110012787A (ko) * 2009-07-31 2011-02-09 삼성전자주식회사 세탁기 및 그 제어방법
US20160010265A1 (en) * 2013-04-30 2016-01-14 New Motech Co., Ltd. Driving apparatus for washing machine
KR20190124937A (ko) * 2018-04-27 2019-11-06 엘지전자 주식회사 의류처리장치
KR20200082340A (ko) * 2018-12-28 2020-07-08 엘지전자 주식회사 세탁기
KR102123429B1 (ko) * 2019-01-16 2020-06-16 엘지전자 주식회사 세탁기

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KR20220091793A (ko) 2022-07-01

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