EP4067556A1

EP4067556A1 - Laundry treatment apparatus

Info

Publication number: EP4067556A1
Application number: EP22165888.3A
Authority: EP
Inventors: Wansik NAM; Hyunggyu LIM; Taejun YOON; Cheolmin JANG
Original assignee: LG Electronics Inc
Current assignee: LG Electronics Inc
Priority date: 2021-04-02
Filing date: 2022-03-31
Publication date: 2022-10-05
Also published as: CN115198501A; US20220316128A1; KR20220137320A; WO2022211530A1

Abstract

A laundry treatment apparatus includes a drying chamber defining a laundry space, a supply unit configured to supply air or moisture to the drying chamber, a support unit including a support body supporting a hanger, a first connecting body connecting the support body to the drying chamber, and a second connecting body connecting the support body to the drying chamber, a rotating shaft extending through the upper surface of the drying chamber, a rotating arm fixed to the rotating shaft and configured to be rotated in the drying chamber, a conversion unit provided at the support body and configured to convert the rotational movement of the rotating arm into reciprocating movement of the support body, a driven unit fixed to the rotating shaft outside the drying chamber, a drive unit configured to rotate the driven unit, and a weight fixed to the driven unit and positioned opposite the rotating arm.

Description

This application claims the benefit of Korean Patent Application No. 10-2021-0043232, filed on April 2, 2021 , which is hereby incorporated by reference as if fully set forth herein.

BACKGROUND

Field

The present disclosure relates to a laundry treatment apparatus.

Discussion of the Related Art

In general, a laundry treatment apparatus, being an apparatus for performing various operations associated with clothing, conceptually includes washing machines for washing clothes, dryers for drying wet clothes, and refreshers for removal of odor and wrinkles from the clothes.
One such conventional laundry treatment apparatus is designed to include a drum defining a space for receiving laundry therein, a drive unit configured to rotate the drum, and a supply unit configured to supply steam or hot air to the drum. However, because the above-mentioned laundry treatment apparatus is designed to supply steam or hot air to laundry during rotation of the drum (because the laundry in the drum is not in the state of being smoothed flat), there is a problem in which wrinkles remain in the laundry.
In order to solve the above problem, among conventional laundry treatment apparatuses, there is a laundry treatment apparatus which is designed to include a cabinet, a first chamber provided in the cabinet so as to define a space for receiving laundry therein, a second chamber provided in the cabinet so as to define a space isolated from the first chamber, a supply unit provided in the second chamber so as to supply steam or hot air to the first chamber, a support body provided in the first chamber so as to suspend the laundry in the first chamber, and a drive unit configured to move the support body in the first chamber ( Korean Patent Registration Publication No. 10-1674942 ).
The above conventional laundry treatment apparatus having the above-described structure is capable of solving the conventional problem (in which wrinkles remains in laundry) by agitating laundry that is in the state of being spread in the first chamber. However, the conventional laundry treatment apparatus exhibits a disadvantage in that there is the possibility of generation of vibration and noise due to the movement of the support body.

SUMMARY

An object of the present disclosure is to provide a laundry treatment apparatus capable of removing wrinkles from objects to be dried, such as laundry.
Furthermore, another object of the present disclosure is to provide a laundry treatment apparatus capable of minimizing vibration and noise.
In order to accomplish the above objects, the present disclosure provides a laundry treatment apparatus including a drying chamber defining a space configured to receive laundry therein, a supply unit configured to supply at least one of air or moisture to the drying chamber, a support unit including a support body disposed in the drying chamber, a hanger being hung on the support body, a first connecting body connecting one end of the support body to an upper surface of the drying chamber, and a second connecting body connecting a remaining end of the support body to the upper surface of the drying chamber, a rotating shaft extending through the upper surface of the drying chamber, a rotating arm fixed to one end of the rotating shaft and configured to be rotated in the drying chamber, a conversion unit provided at the support body and configured to convert the rotational movement of the rotating arm into reciprocating movement of the support body, a disc-shaped driven unit fixed to a remaining end of the rotating shaft and positioned outside the drying chamber, a drive unit configured to provide force required for rotation of the driven unit, and a weight fixed to the driven unit and positioned in a direction opposite the direction in which the rotating arm extends from the rotating shaft.
The weight may include a mass body, which causes a region of the driven unit positioned in a direction opposite a direction in which the rotating arm extends to be heavier than a region of the driven unit positioned in the direction in which the rotating arm extends.
The weight may include a semicircular mass body or a sectorial mass body fixed to one of upper and lower surfaces of the driven unit.
The weight may include a mass body fixed on a circumferential surface of the driven unit.
The conversion unit may include a slot member fixed to the support body below the rotating arm and an engaging member fixed at one end thereof to the rotating arm and having a remaining end thereof inserted into the slot member, the slot member being formed in a direction perpendicular to the direction in which the support body moves.
The slot member may have a length set to be equal to or greater than the diameter of the rotational orbit of the engaging member.
The drive unit may include a drive gear configured to be rotated by a motor, and the driven unit may include a driven gear configured to be rotated by the drive gear.
When an upper surface of the driven gear is divided into a first gear region, positioned in the direction in which the rotating arm extends, and a second gear region, positioned in the direction opposite the direction in which the rotating arm extends, based on a linear line that extends through a rotational axis of the driven gear, the weight may be provided in the second gear region.
When a circumferential surface of the driven gear is divided into a first gear circumferential surface region, positioned in the direction in which the rotating arm extends, and a second gear circumferential surface region, positioned in the direction opposite the direction in which the rotating arm extends, based on a linear line that extends through a rotational axis of the driven gear, the weight may be provided in the second gear circumferential surface region.
The drive unit may include a drive pulley configured to be rotated by a motor, and the driven unit includes a driven pulley connected to the drive pulley via a belt.
When an upper surface of the driven pulley is divided into a first pulley region, positioned in the direction in which the rotating arm extends, and a second pulley region, positioned in the direction opposite the direction in which the rotating arm extends, based on a linear line that extends through a rotational axis of the driven pulley, the weight may be provided in the second pulley region.
When a circumferential surface of the driven pulley is divided into a first pulley circumferential surface region, positioned in the direction in which the rotating arm extends, and a second pulley circumferential surface region, positioned in the direction opposite the direction in which the rotating arm extends, based on a linear line that extends through a rotational axis of the driven pulley, the weight may be provided in the second pulley circumferential surface region.

BRIEF DESCRIPTION OF THE DRAWINGS

The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the disclosure and together with the description serve to explain the principle of the disclosure. In the drawings:

FIGs. 1 and 2 illustrates a laundry treatment apparatus according to an embodiment of the present disclosure;
FIG. 3 illustrates a support unit provided in the laundry treatment apparatus according to the embodiment of the present disclosure;
FIG. 4 illustrates a conversion unit provided in the laundry treatment apparatus according to the embodiment of the present disclosure; and
FIG. 5 illustrates a vibration controller according to the embodiment of the present disclosure.

DETAILED DESCRIPTION

Reference will now be made in detail to the preferred embodiments of the present disclosure, examples of which are illustrated in the accompanying drawings. Meanwhile, elements or control method of apparatuses which will be described below are only intended to describe the embodiments of the present disclosure and are not intended to restrict the scope of the present disclosure. Wherever possible, the same reference numbers will be used throughout the drawings to refer to the same or like parts.
As illustrated in FIG. 1, the laundry treatment apparatus 100 according to the present disclosure may include a cabinet 1, a drying chamber 2 defined in the cabinet 1 so as to provide a space for accommodating objects to be dried, such as laundry, therein, and a hanger support 5 provided in the drying chamber 2 so as to maintain the laundry in the spread-out state in the drying chamber 2.
As illustrated in FIG. 2, the laundry treatment apparatus 100 may include a first chamber (a machine compartment) 3 positioned below the drying chamber 2 and a second chamber 4 positioned above the drying chamber 2.
The first chamber 3 and the second chamber 4 may be provided inside the cabinet 1, or may alternatively be provided outside the cabinet 1. FIG. 2 illustrates an embodiment in which the first chamber 3 is provided below the drying chamber 2 inside the cabinet 1 and the second chamber 4 is provided above the drying chamber 2 inside the cabinet 1. Each of the first chamber 3 and the second chamber 4 may be configured so as to define a closed space or a space having at least one surface thereof exposed to the outside.
One surface (the front surface) 11 of the cabinet 1 may be provided with a first communication opening 111 communicating with the drying chamber 2 and a second communication opening 112 (see FIG. 1) communicating with the first chamber 3. The front surface may be provided with a door 13, and the door 13 may be configured so as to open and close both the first communication opening 111 and the second communication opening 112.
The door 13 may be provided with a control panel 14. The control panel 14 may include an input unit, to which control commands required for operation of the laundry treatment apparatus 100 are input, and a display unit configured to display the state of execution of control commands capable of being selected by a user and control commands actually selected by a user.
The first chamber 3 may be provided with supply units 31, 32, 34 and 35, which are configured to supply at least one of air or moisture (steam, mist or the like) to the drying chamber 2. The second communication opening 112 may be provided with a cover (the door of the machine compartment) 113 so as to prevent the supply units from being exposed to the outside (that is, to prevent accidents) when the door 13 is rotated so as to open the first communication opening 111. The cover 113 may be removably coupled to the cabinet 1, and may be configured to have any shape or structure capable of opening and closing the second communication opening 112.
The drying chamber 2 may include a chamber front surface 21 having an introduction opening 211, a chamber upper surface 24 fixed to the upper end of the chamber front surface and defining the upper surface of the drying chamber 2, a chamber bottom surface 23 fixed to the lower end of the chamber front surface and defining the bottom surface of the drying chamber 2, and a chamber rear surface 22 connecting the chamber upper surface to the chamber bottom surface and defining the rear surface of the drying chamber 2.
The introduction opening 211 may be configured so as to communicate with the first communication opening 111. Because the introduction opening 211 is exposed to the outside of the cabinet 1 when the door 13 is rotated so as to open the first communication opening 111, it is possible for a user to put laundry into the drying chamber 2 through the introduction opening 211 or to take laundry out of the drying chamber 2.
The chamber bottom surface 23 may serve as a wall (a partition wall) for isolating the drying chamber 2 from the first chamber 3. The chamber bottom surface 23 may be provided with a discharge hole 231, which allows the drying chamber 2 to communicate with the first chamber 3, an air supply hole 232, and a moisture supply hole 233.
The discharge hole 231 may be a through hole, through which the air inside the drying chamber 2 is guided to the first chamber 3, and the air supply hole 232 and the moisture supply hole 233 may be through holes, through which the air and moisture supplied from the supply units 31, 32, 34 and 35 is guided to the drying chamber 2.
The supply units 31, 32, 34 and 35 may include at least one of the air supply unit 31 or the moisture supply unit 34. FIG. 2 illustrates an embodiment in which the supply units include both the air supply unit 31 and the moisture supply unit 34.
The air supply unit 31, which is intended to supply air to the drying chamber 2, may include a duct 311 connecting the discharge hole 231 with the air supply hole 232 and a fan 312 provided in the duct 311.
When the air supply unit 31 is configured to supply heated air to the drying chamber 2, the duct 311 may further be provided therein with a heat exchange unit 32.
The heat exchange unit 32 may include a first heat exchanger (an evaporator) 321 configured to absorb heat from the air introduced into the duct 311 and to condense the air and a second heat exchanger (a condenser) 322 configured to supply heat to the air that has passed through the first heat exchanger 321 to thus heat the air. The first heat exchanger 321 and the second heat exchanger 322 may be connected to each other via a refrigerant pipe 327 constituting a circulation path for refrigerant. The refrigerant pipe 327 may be provided with a compressor 325 configured to compress the refrigerant and a pressure regulator 326 configured to regulate the refrigerant circulating through the refrigerant pipe 327.
The moisture supply unit 34 may include a storage 341 configured to store water therein, a heater 343 provided in the storage 341 so as to heat the water, and a supply pipe 345 configured to guide the steam in the storage 341 to the moisture supply hole 233. The heater 343 may be constituted by an electric resistor, which generates heat upon supply of power thereto.
The storage 341 may receive water from a water supply unit 35 provided at the cover 113. The water supply unit 35 may include a tank 351, which is removably coupled to the cover 113 and stores water therein, a connecting pipe 353 connecting the tank 351 to the storage 341, and a valve 355 configured to control opening and closing of the connecting pipe 353.
The hanger support 5 maintains laundry in the spread-out state in the drying chamber 2. As illustrated in FIG. 3, the hanger support 5 may include a support body 51, which is positioned in the drying chamber 2 and on which a hanger H1 is hung, and a drive unit D, configured to supply power required to move the support body 51 in the drying chamber 2.
The support body 51 may be constituted by a bar parallel to the width direction (the Y-axis direction) of the drying chamber 2. The upper surface of the support body 51 (which is the surface of the support body 51 that faces the chamber upper surface) may be provided with a plurality of reception grooves 513, in which hooks H2 of hangers are received.
The support body 51 may be connected at one end thereof to the chamber upper surface 24 via a first connecting body 511 and at the other end thereof to the chamber upper surface 24 via a second connecting body 512. In order to minimize a limitation on movement of the support body 51 due to the first and second connecting bodies 511 and 512 (in order to minimize the amount of power consumed by the drive unit), each of the first connecting body 511 and the second connecting body 512 is preferably made of an elastic material such as rubber.
The first connecting body 511 and the second connecting body 512 may be directly fixed to the chamber upper surface 24, or may be fixed to a fixing member 52 provided in the second chamber 4. When the first and second connecting bodies 511 and 512 are fixed to the fixing member 52 rather than being directly fixed to the chamber upper surface 24, it is possible to reduce transmission of vibration to the drying chamber 2 during movement of the support body 51 (reciprocating movement of the support body 51 in a direction parallel to the Y-axis direction).
When the first and second connecting bodies 511 and 512 are fixed to the fixing member 52, the chamber upper surface 24 may be provided with a first through hole 241, through which the first connecting body 511 extends, and a second through hole 242, through which the second connecting body 512 extends. In order to prevent the air or moisture, supplied to the drying chamber 2, from being discharged to the second chamber 4, each of the through holes 241 and 242 is preferably provided with a gasket. The gasket may be configured so as to have any of various shapes and structures, as long as the gasket is capable of closing the through hole.
The support body 51 may be moved in a reciprocating manner in the drying chamber 2 by means of the drive unit D. The term "reciprocating movement" used herein conceptually includes not only linear movement in which the support body 51 reciprocates in the X-axis direction or the Y-axis direction but also circular movement of the support body 51 in the X-Y plane.
The drive unit D may include a main drive unit 54 including a motor 541, a driven unit 55 including a rotating shaft 552, which is rotated by the power supplied from the main drive unit 54, and a conversion unit 57 configured to convert the rotational movement of the rotating shaft 552 into the reciprocating movement of the support body 51.
The motor 541 of the main drive unit 54 may be fixed to the fixing member 52 so as to be positioned in the second chamber 4. A drive pulley 543 may be fixed to a rotating shaft (motor shaft) 542 of the motor 541.
The rotating shaft 552 of the driven unit 55 may extend through the fixing member 52 and the chamber upper surface 24. Specifically, the fixing member 52 may have formed therein a first fixing member through hole 521 through which the rotating shaft 552 extends, and the chamber upper surface 24 may have formed therein an upper surface through hole. The rotating shaft 552 may be inserted into the fist fixing member through hole 521 and the upper surface through hole such that one end of the rotating shaft 552 is positioned in the drying chamber 2 and the other end of the rotating shaft 552 is positioned in the second chamber 4.
The driven unit 55 may include a driven pulley 551 and an arm 553, which are fixed to the two ends of the rotating shaft 552. The driven pulley 551 may be fixed to the end of the rotating shaft 552 that is positioned in the second chamber 4, and the arm 553 may be fixed to the other end of the rotating shaft 552, which is positioned in the drying chamber 2. As illustrated in FIG. 4, the arm 553 may be constituted by a bar which is fixed at one end (a fixed end) thereof to the rotating shaft 552.
As illustrated in FIG. 3, the drive pulley 543 and the driven pulley 551 may be connected to each other via a belt 56. Consequently, as illustrated in FIG. 4, the free end of the arm 553, which is fixed to the other end of the rotating shaft 552, may be rotated in the drying chamber 2 during rotation of the rotating shaft 542.
Unlike the embodiment shown in the drawings, the drive pulley 543 may be replaced with a drive gear, and the driven pulley 551 may be replaced with a driven gear. In this case, the drive gear and the driven gear may be engaged with each other (the structure eliminates the need for a belt).
The conversion unit 57 may include a slot member 573, which is fixed to the support body 51 and is positioned below the arm 553 and an engaging member 571 which is fixed at one end thereof to the arm 553 and is inserted at the other end (the free end) thereof into the slot member 573.
As illustrated in FIG. 4, the slot member 573 may be formed in a direction (the X-axis direction) perpendicular to the support body 51. Here, the movement of the support body 51 may be determined by the length L of the slot member 573 and the diameter of the rotational orbit T, which is defined by rotation of the engaging member 571.
In other words, when the length L of the slot member 573 is set to be equal to or greater than the rotational orbit T of the engaging member 571, the support body 51 may be linearly reciprocated in the width direction (the Y-axis direction) of the drying chamber 2. When the engaging member 571 is moved along the rotational orbit T, the slot member 573 may be subjected to the force F resulting from the force component A perpendicular to the slot member 573 and the force component B parallel to the slot member 573. Here, when the length L of the slot member 573 is set to be equal to or greater than the diameter of the rotational orbit T, the support body 51 may be moved using only the force component A perpendicular to the slot member 573, and may thus be linearly reciprocated in the Y-axis direction, as illustrated in FIG. 4.
Meanwhile, when the length L of the slot member 573 is set to be less than the diameter of the rotational orbit T of the engaging member 571, the support body 51 may reciprocate along an elliptical orbit in the X-Y plane during rotation of the arm 553.
Unlike the embodiment shown in the drawings, the slot member 573 may be formed in a direction (the Y-axis direction) parallel to the support body 51. In this case, when the length L of the slot member 573 is set to be equal to or greater than the diameter of the rotational orbit T of the engaging member 571, the support body 51 may be linearly reciprocated in the depth direction (the X-axis direction) of the drying chamber 2 during rotation of the arm 553 (it is preferable that the positions of the connecting bodies and the through holes be changed). Meanwhile, when the length L of the slot member 573 is set to be less than the diameter of the rotational orbit T of the engaging unit 571, the support body 51 may be reciprocated along an elliptical orbit in the X-Y plane during rotation of the arm 553.
Because the laundry treatment apparatus 100, which is constructed as described above, shakes the support body 51 during rotation of the rotating shaft 552, it is possible to remove odorous particles and dust from the laundry received in the drying chamber 2. Furthermore, when the support body 51 is shaken while air or moisture is supplied from the supply units 31, 32, 34 and 35, it is also possible to convey an effect of removing wrinkles from the laundry.
However, a laundry treatment apparatus 100 having only the above-described structure may cause a problem in which vibration of the drying chamber 2 increases when the period of reciprocation of the support body 51 is shortened. Accordingly, in order to minimize vibration of the drying chamber 2 due to the movement of the support body 51, the support body may further be provided with a vibration controller 6, configured to suppress vibration caused by the support body 51.
Referring to FIG. 5, the vibration controller 6 may be embodied as a weight fixed to the driven unit 55 so as to be positioned in the direction (the +Y-axis direction) opposite the direction (the -Y-axis direction) in which the arm 553 extends from the rotating shaft 552.
The weight may be embodied as a mass body, which causes a region R2 of the driven pulley 551, positioned in the direction (the +Y-axis direction) opposite the direction (the -Y-axis direction) in which the arm 553 extends, to be heavier than the opposite region R1 of the driven pulley 551, positioned in the direction (the -Y-axis direction) in which the arm 553 extends.
Specifically, when the upper surface of the driven pulley 551 is divided into the first pulley region R1, positioned in the direction in which the arm 553 extends, and the second pulley region R2, positioned in the direction opposite the direction in which the arm 553 extends, based on a linear line that extends through the rotational axis 552 of the driven pulley 551, the weight may be provided in the second pulley region R2.
When the vibration controller 6 is provided at the driven pulley 551, vibration generated during reciprocating movement of the support body 51 counteracts vibration generated during rotation of the weight (counteraction that cancels some of the vibration caused by the support body occurs). Because the maximum amplitude of vibration of the support body 51 decreases when vibration of the support body 51 counteracts vibration due to the weight, the laundry treatment apparatus 100 equipped with the vibration controller 6 is capable of minimizing vibration of the drying chamber 2 and the cabinet 1.
The weight may be embodied as a semicircular or sectorial mass body fixed to one of the upper and lower surfaces of the driven pulley 551. FIG. 5 illustrates an embodiment in which the weight is embodied as a semicircular mass body fixed to the upper surface of the driven pulley 551.
Unlike the embodiment shown in the drawings, the weight may be embodied as a mass body fixed to the circumferential surface of the driven pulley 551. In this case, among the circumferential surfaces of the driven pulley 551 (a first pulley circumferential region and a second pulley circumferential region), the weight may be embodied as a mass body fixed to a region defined by the periphery of the second pulley region R2 (the second pulley circumferential region).
Also in the case in which the drive unit 54 includes a drive gear and the driven unit 55 includes a driven gear, the weight must be fixed in the second region. In other words, when the upper surface of the driven gear is divided into a first gear region, positioned in the direction in which the arm extends, and a second gear region, positioned in the direction opposite the direction in which the arm extends, based on a linear line that extends through the rotational axis of the driven gear, the weight must be fixed in the second gear region.
Furthermore, when the circumferential surface of the driven gear is divided into a first gear circumferential region, positioned in the direction in which the arm extends, and a second gear circumferential region, positioned in the direction opposite the direction in which the arm extends, based on a linear line that extends through the rotational axis of the driven gear, the weight may also be provided in the second gear circumferential region.
As is apparent from the foregoing description, the present disclosure provides a laundry treatment apparatus capable of removing wrinkles from objects to be dried, such as laundry.
Furthermore, the present disclosure provides a laundry treatment apparatus capable of minimizing vibration and noise.
It will be apparent to those skilled in the art that various modifications and variations can be made in the present disclosure without departing from the scope of the present disclosure.

Claims

A laundry treatment apparatus comprising:
a drying chamber (2) defining a space configured to receive laundry therein;

a supply unit (31, 32, 34, 35) configured to supply at least one of air or moisture to the drying chamber (2);

a support unit including a support body (51) disposed in the drying chamber (2), a hanger (H1) being hung on the support body (51), a first connecting body (511) connecting one end of the support body (51) to an upper surface of the drying chamber (2), and a second connecting body (512) connecting a remaining end of the support body (51) to the upper surface of the drying chamber (2);

a rotating shaft (552) extending through the upper surface of the drying chamber (2);

a rotating arm fixed to one end of the rotating shaft (552) and configured to be rotated in the drying chamber (2);

a conversion unit (57) provided at the support body (51) and configured to convert rotational movement of the rotating arm into reciprocating movement of the support body (51);

a disc-shaped driven unit (55) fixed to a remaining end of the rotating shaft (552) and positioned outside the drying chamber (2);

a drive unit (D) configured to provide force required for rotation of the driven unit (55); and

a weight fixed to the driven unit (55) and positioned in a direction opposite a direction in which the rotating arm extends from the rotating shaft (552).
The laundry treatment apparatus according to claim 1, wherein the weight includes a mass body, which causes a region of the driven unit (55) positioned in a direction opposite a direction in which the rotating arm extends to be heavier than a region of the driven unit (55), positioned in the direction in which the rotating arm extends.
The laundry treatment apparatus according to claim 1 or 2, wherein the weight includes a semicircular mass body or a sectorial mass body fixed to one of upper and lower surfaces of the driven unit (55).
The laundry treatment apparatus according to any one of claims 1 to 3, wherein the weight includes a mass body fixed on a circumferential surface of the driven unit (55).
The laundry treatment apparatus according to any one of claims 1 to 4, wherein the conversion unit (57) includes a slot member (573) fixed to the support body (51) below the rotating arm and an engaging member (571) fixed at one end thereof to the rotating arm and inserted at a remaining end thereof into the slot member, the slot member (573) being formed in a direction perpendicular to a direction in which the support body (51) moves.
The laundry treatment apparatus according to claim 5, wherein the slot member (573) has a length set to be equal to or greater than a diameter of a rotational orbit of the engaging member (571).
The laundry treatment apparatus according to any of claims 1 to 6, wherein the drive unit (D) includes a drive gear configured to be rotated by a motor (541), and the driven unit (55) includes a driven gear configured to be rotated by the drive gear.
The laundry treatment apparatus according to claim 7, wherein, when an upper surface of the driven gear is divided into a first gear region, positioned in the direction in which the rotating arm extends, and a second gear region, positioned in the direction opposite the direction in which the rotating arm extends, based on a linear line that extends through a rotational axis of the driven gear, the weight is provided in the second gear region.
The laundry treatment apparatus according to claim 7, wherein, when a circumferential surface of the driven gear is divided into a first gear circumferential surface region, positioned in the direction in which the rotating arm extends, and a second gear circumferential surface region, positioned in the direction opposite the direction in which the rotating arm extends, based on a linear line that extends through a rotational axis of the driven gear, the weight is provided in the second gear circumferential surface region.
The laundry treatment apparatus according to any of claims 1 to 6, wherein the drive unit (D) includes a drive pulley (543) configured to be rotated by a motor (541), and the driven unit (55) includes a driven pulley (551) connected to the drive pulley (543) via a belt.
The laundry treatment apparatus according to claim 10, wherein, when an upper surface of the driven pulley (551) is divided into a first pulley region (R1), positioned in the direction in which the rotating arm extends, and a second pulley region (R2), positioned in the direction opposite the direction in which the rotating arm extends, based on a linear line that extends through a rotational axis of the driven pulley (551), the weight is provided in the second pulley region (R2).
The laundry treatment apparatus according to claim 10, wherein, when a circumferential surface of the driven pulley (551) is divided into a first pulley circumferential surface region, positioned in the direction in which the rotating arm extends, and a second pulley circumferential surface region, positioned in the direction opposite the direction in which the rotating arm extends, based on a linear line that extends through a rotational axis of the driven pulley (551), the weight is provided in the second pulley circumferential surface region.