Laundry treating apparatus

Abstract

To provide a laundry treating apparatus that may maintain a motor that provides rotational power to rotate a drum, and a rotation shaft of a decelerator that converts rpm and torque of the rotational power.SOLUTION: The present invention relates to a laundry treating apparatus including a decelerator that is disposed between a motor part and a drum, and converts power provided by the motor part to rotate the drum, wherein the motor part is coupled to and fixed to the decelerator.SELECTED DRAWING: Figure 6

Description

[Technical field]

[0001] The present invention relates to a clothes treating apparatus, and more particularly to a clothes treating apparatus having a drive unit directly connected to a drum for storing clothes to rotate the drum. [Background technology]

[0002] A clothing treatment device is a device that applies a physical force to clothing to remove dust or foreign matter from the clothing, and includes washing machines, dryers, refreshers (stylers), and the like.

[0003] A washing machine performs a washing process by supplying water and detergent to clothes and separating and removing foreign substances from the clothes.

[0004] Dryers are classified into exhaust type dryers and circulation type dryers, and both perform a drying process in which high-temperature hot air is produced by a heater and exposed to the clothes to remove moisture from the clothes.

[0005] Recently, dryers have been designed to perform a centralized drying process by eliminating the structure for supplying and draining water to and from clothes, and by eliminating the tub for storing water in the cabinet, which simplifies the structure inside the dryer and improves drying efficiency by directly supplying hot air to the drum that stores the clothes.

[0006] Such a dryer includes a drum for accommodating clothes, a hot air supplying unit for supplying hot air to the drum, and a driving unit for rotating the drum. As a result, the dryer can supply hot air into the drum to dry the clothes accommodated in the drum, and rotate the drum to uniformly expose the surfaces of the clothes to the hot air. As a result, the entire surfaces of the clothes can be uniformly exposed to the hot air to complete the drying.

[0007] Meanwhile, in order for the driving unit to rotate the drum, it needs to be fixed inside the cabinet. Also, when rotating the rotating shaft connected to the drum, the driving unit needs to be connected parallel to the rotating shaft. However, since there is no tub fixed inside the cabinet in a dryer, there is a limitation in that the driving unit cannot be fixed to the tub like in a washing machine.

[0008] To solve this problem, dryers have been developed in which the drive unit is fixed to the back of the cabinet [see Japanese Patent Publication JPS55-081914A, Japanese Patent Publication JPS55-115455A, Japanese Patent Publication JPS57-063724A, and Japanese Patent Publication JPS57-124674A].

[0009] FIG. 1 shows a conventional dryer structure in which the drive unit is attached to the rear of the cabinet.

[0010] This dryer includes a cabinet 1 which forms the exterior, a drum 2 which is rotatably provided within the cabinet 1 and which contains clothes, and a drive unit 3 which rotates the drum 2.

[0011] The drive unit 3 is disposed on the rear surface of the drum 2 to rotate the drum 2, or is coupled and fixed to a rear panel 11 forming the rear surface of the cabinet 1. In this way, the drive unit 3 is fixed to the cabinet 1 and can rotate the drum 2.

[0012] The driving unit 3 of the above-mentioned conventional dryers commonly includes a stator 31 fixed to the rear panel 11, a rotor 32 rotated by the stator 31, and a rotating shaft 33 coupled with the rotor 32 to rotate the drum 2, and also includes a reducer 37 which reduces the rpm of the rotating shaft 33 while increasing the torque to rotate the drum 2.

[0013] Furthermore, all conventional dryers commonly further include a fixing portion 4 that fixes the driving portion 3 to the rear panel 11. The fixing portion 4 includes either a first fixing portion 41 that fixes the stator 31 to the rear panel 11 or a second fixing portion 42 that fixes the rotating shaft 33 to the rear panel 11. As a result, the conventional dryers are able to stably rotate the drum 2 by arranging the rotating shaft 33 connected to the drum 2 and the driving portion 3 in parallel.

[0014] However, because the rear panel 11 of the cabinet is made of a thin steel plate, it easily deforms or vibrates even with a very small external force. In addition, the rear panel 11 receives the load of not only the drive unit 3 but also the drum 2 via the rotating shaft 33, making it difficult to maintain its shape.

[0015] Furthermore, if the clothes are eccentric within the drum 2 or fall repeatedly into the drum 2 as it rotates, an external force is repeatedly transmitted to the rear panel 11, causing the rear panel 11 to vibrate.

[0016] If vibration or external force is transmitted to the rear panel 11 and the rear panel 11 is bent or deformed even temporarily, a problem may occur in which the rotating shaft 33 connecting the driving unit 3 and the drum 2 is twisted. This causes unnecessary vibration and noise in the driving unit 3, and in the worst case, the rotating shaft 33 may be damaged. There is also a problem of unnecessary noise being generated in the process of the rear panel 11 being bent or deformed.

[0017] In addition, when the rear panel 11 vibrates, the gap between the rotor 32 and the stator 31 temporarily changes, which may cause the rotor 32 to collide with the stator 31, resulting in the generation of unnecessary vibrations and noise.

[0018] Furthermore, when the driving unit 3 further includes a reducer 37, the rotating shaft 33 coupled to the reducer 37 and the reduction shaft 33a connected from the reducer 37 to the drum 2 are separate from each other. In this case, since the reducer 37 is supported by the rear panel 11 via the stator 31 and the rotating shaft 33, even a slight deformation of the rear panel 11 can cause problems such as twisting or misalignment of the reduction shaft 33a and the rotating shaft 33.

[0019] In other words, the reduction shaft 33a connected to the drum 2 changes position less due to the load of the drum 2 than the rotation shaft 33 connected to the drive unit 3. Therefore, if the rear panel 11 is temporarily bent or deformed, the rotation shaft 33 and the reduction shaft 33a will tilt to different degrees, causing the rotation shaft 33 and the reduction shaft 33a to become misaligned.

[0020] Therefore, in the conventional laundry processing device, the rotating shaft 33 and the reduction shaft 33a are misaligned every time the driving unit 3 is operated, which not only makes it impossible to guarantee the reliability of the reduction gear 37, but also puts the reduction gear 37 at risk of being damaged.

[0021] Meanwhile, in order to directly connect the driving unit 3 to the drum 200 in the dryer, it is necessary to connect a rotating shaft that transmits the power of the driving unit 3 to the drum 200. However, as described above, in the conventional dryer, a specific structure for connecting the driving unit 3 to the drum 200 is not specified, and it is considered to apply a structure for connecting the drum 200 and the driving unit 3 of a washing machine.

[0022] FIG. 2 shows a dryer in which the drive unit is fixed to the bottom surface or base of the cabinet 1. As shown in FIG.

[0023] The dryer includes a cabinet 1 and a drum 2, a circulation flow path 5 that circulates the air in the drum 2 to the outside, and a heat pump 6 that is housed in the circulation flow path 5 and condenses and reheats the air. Water condensed by the heat pump 6 is collected in a water storage tank 9 using a pump 8.

[0024] On the other hand, even if vibration occurs in the drive unit 3 or an external force is temporarily transmitted via the drive unit 3, the bottom surface 12 of the cabinet 1 can be prevented from being deformed or tilted.

[0025] Therefore, in conventional dryers, the driving unit 3 is disposed on the bottom surface 12 of the cabinet 1, or on a base disposed below the drum 2 and fixed to the bottom surface of the cabinet 1. In such dryers, the driving unit 3 is not disposed parallel to the rotation axis of the drum 2, so another structure is further used to rotate the drum 2.

[0026] Specifically, the drive unit 3 includes a motor unit 34 fixed to the bottom surface of the cabinet 1, a rotating shaft 37 that rotates on the motor unit 34, a pulley 35 that rotates by the rotating shaft 37, and a belt 36 that connects the outer circumferential surface of the drum 2 and the outer circumferential surface of the pulley 35.

[0027] As a result, when motor unit 34 rotates rotary shaft 37, pulley 35 rotates belt 36, which in turn rotates drum 2. At this time, since the diameter of pulley 35 is much smaller than the diameter of drum 2, the dryer can omit a reducer.

[0028] However, in this dryer, the diameter of the pulley 35 is much smaller than the diameter of the drum 2, so when the motor unit 34 rotates quickly, a slippage phenomenon occurs in which the belt 36 slips on the drum 2 or the pulley 35. Therefore, this dryer has a problem in that the rotation speed of the motor unit 34 must be limited to a certain level or less, and there is a fundamental limitation in that the motor unit 34 must be gradually accelerated or decelerated to prevent the belt 36 from slipping when the drum 2 rotates.

[0029] Therefore, the conventional dryer cannot rapidly change the rotation direction of the drum 2, cannot control the rotation of the drum 2, or cannot change the rotation direction of the drum 2.

[0030] Therefore, this dryer has a limitation in that the rotation direction and rotation speed of the drum 2 cannot be controlled as intended during the drying process, and the drying efficiency cannot be maximized. Summary of the Invention [Problem to be solved by the invention]

[0031] The present invention aims to provide a clothing treatment device that can maintain the rotation shaft of a motor that provides the rotational power to rotate the drum and a reducer that converts the rpm and torque of the rotational power.

[0032] The present invention aims to provide a clothes treatment device in which the reducer and the motor can tilt or vibrate simultaneously.

[0033] The present invention aims to provide a clothes treatment device in which a reducer and a motor are fixed away from the rear surface of a cabinet.

[0034] The present invention aims to provide a clothes treatment device in which the rotating shaft of the drum and the drive shaft of the drive unit are arranged or fixed based on the reducer.

[0035] An object of the present invention is to provide a clothing processing device in which a reducer is fixed within a cabinet and a drive unit is fixed and supported by the reducer.

[0036] The present invention aims to provide a clothing treatment device that can maintain the same axis between a drive shaft extending from a motor and a rotating shaft of a reducer that rotates by converting the RPM and torque of the rotating shaft.

[0037] An object of the present invention is to provide a clothes treatment device that can control the rotation speed and direction of the drum even if a tub is omitted.

[0038] An object of the present invention is to provide a clothing processing device in which a reduction gear can be firmly fixed.

[0039] The present invention aims to provide a clothes treatment device in which the distance between the rotor and the stator in the motor is maintained. [Means for solving the problem]

[0040] The present invention provides a clothes treating device including a motor unit that provides power to rotate a drum and a reducer that converts the power of the motor unit.

[0041] The motor section is directly connected to the reducer and supported thereon, or is connected to the reducer alone and supported thereon, so that the reducer itself becomes the vibration reference for the motor section.

[0042] A stator that generates a rotating magnetic field in the motor section is coupled and fixed to a housing that forms the exterior of the reducer.

[0043] The reducer housing is connected to and supported by a rear cabinet connected to a rear surface of the drum, but the stator may be disposed separately from the rear cabinet or may be provided at a distance from the rear cabinet.

[0044] The reducer housing is at least partially inserted into the internal space of the stator or is disposed within the stator, thereby making it possible to utilize the internal space of the stator and reduce the space occupied by the reducer alone.

[0045] Furthermore, by directly connecting the stator to the reduction gear housing and positioning the reduction gear housing inside the stator, the center of the rotor rotated by the stator can be easily aligned with the center of the reduction gear.

[0046] As a result, in the laundry treatment device according to the present invention, the drum, the reducer, the stator and the rotor form a vibration system. The reducer is coupled to the stator, and the reducer is connected to the drum. Therefore, the reducer, the stator and the drum can form a vibration system together.

[0047] The drum, stator and rotor are separate and spaced from the rear cabinet.

[0048] That is, the drum, stator, and rotor are inclined in parallel with the reducer as the center and vibrate together.

[0049] The reducer plays the role of the point of action of a lever or a seesaw in the vibration system, and since the reducer is supported by the rear cabinet, the rear cabinet can play the role of the point of action.

[0050] Meanwhile, the drum is made of a flexible material so that its shape can be changed to a certain extent, and is made of a material having elasticity so that its shape can be restored. Also, a part of the connecting shaft connecting the drum and the reducer may be made of a flexible material.

[0051] In this case, the drum forms a vibration system different from the reducer and the stator / rotor and can move independently, which prevents external forces from being transmitted to the stator and motor when a severe imbalance or excessive vibration occurs inside the drum.

[0052] On the other hand, the reducer and motor are separated from the external cover (rear panel) in terms of vibration.

[0053] In other words, the reducer and the motor are disposed away from the rear panel of the cabinet.

[0054] That is, the reducer and the motor are fixed and coupled to each other, but are completely separate from the rear panel.

[0055] Of course, the reducer and the motor can be supported in contact with at least the rear panel while being coupled to each other, but they do not have to be coupled to the rear panel by a fixing member or the like.

[0056] Therefore, the reducer and the motor are not affected by changes in shape or vibration of the rear panel, and the coaxiality is maintained based only on the reducer.

[0057] That is, the entire drive train remains coaxial and tilts or vibrates together.

[0058] Specifically, the reducer and the motor are fixed to each other in order to maintain maximum concentricity between the rotor shaft and the drum shaft of the two-shaft reducer.

[0059] If concentricity is not achieved, not only will the reliability of the reducer itself be significantly reduced, but the gap between the stator and rotor will not be maintained constant, resulting in the generation of unnecessary noise and vibration.

[0060] Therefore, by connecting the stator to the reducer housing, the reducer serves as the reference for connection, and the center of the reducer and the center of the stator can be aligned. As a result, the reliability of the reducer can be guaranteed. In addition, the concentricity of the drum shaft and the rotor shaft can be maintained, so the gap between the rotor and the stator can always be maintained.

[0061] The clothing treatment device according to the present invention includes a drum and a motor unit arranged behind the drum, a rear cabinet arranged between the drum and the motor, and a reducer connected to the rear cabinet to transmit power from the motor unit to the drum.

[0062] The clothing treatment device according to the present invention is provided with a front stopper that rotatably supports the front of the drum, and also includes a rear stopper disposed behind the drum.

[0063] The rear stopper contacts the rear surface of the drum to support the rear of the drum.

[0064] The rear stopper is spaced apart from the rear of the drum by a standard distance (e.g. 2 mm) to prevent wear on the rear stopper and to support the drum only when the drum is heavy.

[0065] The rear cabinet and the back of the drum are positioned apart from each other by a distance equal to or greater than the standard distance.

[0066] The rear stopper is placed between the rear cabinet and the drum, and supports the bottom end of the drum. The rear stopper is made of a roller structure / felt structure.

[0067] The rear cabinet is disposed between the reducer or the motor unit and the drum. The rear cabinet is disposed between the rear stopper and the reducer or the motor unit.

[0068] The rear cabinet is thicker and more rigid than the front cabinet or the rear cover.

[0069] In the present invention, the belt for rotating the drum is omitted, and the driving unit is directly connected to the rear of the drum to rotate the drum, so a structure for installing and supporting the drum and the driving unit is additionally required.

[0070] At this time, the rotation shaft that connects the drum to the drive unit rises or tilts during rotation.

[0071] A drive unit including a reduction gear is connected and fixed to the rear of the rear plate, so that the drum is disposed in front of the rear plate and the drive unit is disposed behind it, distributing the vehicle's own weight.

[0072] Since the rear plate itself supports the load of the drum or drive unit, not only is the load distributed to the front and rear of the rear plate, but the rear plate can also act as the point of application of the seesaw.

[0073] This allows the drum and drive unit to tilt and vibrate while maintaining their coaxiality.

[0074] On the other hand, since the rear plate is made of a strong plate, a bracket is provided that is connected to the rear plate to reinforce the rigidity of the rear plate.

[0075] The bracket consists of one or more members, is formed in a ring shape, and connects the reduction gear and the rear plate.

[0076] Brackets are also arranged at the front and rear of the rear plate, respectively, to stably connect the reduction gear to the rear plate and to enhance the rigidity of the rear plate.

[0077] When the bracket is made up of a plurality of brackets, some of the brackets are used to connect the reducer and the rear plate to reinforce the rigidity of the rear plate, and the other brackets are used to strengthen the connecting force of the reducer.

[0078] It is possible to maintain a rotating shaft of a motor that provides the rotational force to rotate the drum and a reducer that converts the RPM and torque of the rotational force.

[0079] The reducer and the motor can tilt and vibrate at the same time. Effect of the Invention

[0080] The present invention has the advantage that the reducer and the motor are fixed at a distance from the rear surface of the cabinet.

[0081] The present invention has an advantage of providing a clothes treating device in which the rotating shaft of the drum and the drive shaft of the drive unit are arranged or fixed based on the reducer.

[0082] The present invention has an advantage that the reducer is fixed inside the cabinet, and the drive unit is fixed to and supported by the reducer.

[0083] The present invention has the effect of maintaining the same axis between the drive shaft that extends from the motor and the rotating shaft of the reducer that rotates by converting the RPM and torque of the rotating shaft.

[0084] The present invention has the advantage that it is possible to control the rotation speed and direction of the drum in a clothing treatment device that does not require a tub.

[0085] The present invention has the effect of firmly fixing the reducer.

[0086] The present invention has the effect of maintaining the gap between the rotor and the stator in the motor. [Brief description of the drawings]

[0087] [Figure 1] FIG. 1 is a diagram showing an example of a conventional clothing processing device. [Diagram 2] FIG. 11 is a diagram showing another embodiment of a conventional clothing processing device. [Diagram 3] 1 is a diagram showing the appearance of a clothing processing device according to the present invention; [Figure 4] 1 is a diagram showing the inside of a clothing processing device according to the present invention. [Diagram 5] FIG. 2 is a diagram showing the drum configuration of the clothing treatment device according to the present invention. [Figure 6]1 is a diagram showing an internal configuration of a clothing processing device according to the present invention; [Figure 7] FIG. 2 is a diagram showing an embodiment of supporting the drum of the clothes treatment device according to the present invention. [Figure 8] 4 is a diagram showing the structure of a rear case of the clothing processing device according to the present invention. FIG. [Figure 9] 4 is a diagram showing the coupling structure between the reduction gear and the motor unit in the clothing processing device according to the present invention. FIG. [Figure 10] 4 is a diagram showing a reduction gear of the clothing processing device according to the present invention. FIG. [Figure 11] 4 is a diagram showing a process of connecting a motor unit to a reducer of the clothing processing device according to the present invention; FIG. [Figure 12] A diagram showing the completed connection of the reduction gear and the motor unit in the clothing processing device of the present invention. [Figure 13] 1 is a diagram showing a structure in which a reduction gear of a clothing processing device according to the present invention is connected to a rear case. [Figure 14] 4 is a diagram showing a bracket structure of the clothing processing device according to the present invention. FIG. [Figure 15] FIG. 13 is a diagram showing a structure in which the bracket is joined to a reducer. [Figure 16] 13 is a diagram showing a structure in which the bracket is joined to the rear case. FIG. [Figure 17] 13 is a diagram showing a structure in which a bracket fixes a reducer to a rear case. FIG. [Figure 18] 2 is a diagram showing the internal configuration of a drive unit in the clothing processing device according to the present invention. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0088] Hereinafter, the embodiments described in this specification will be described in detail with reference to the attached drawings. In this specification, the same or similar components are given the same or similar reference symbols even in different embodiments, and the description thereof will be omitted. The singular expressions used in this specification include the plural expressions unless the context clearly indicates otherwise. In addition, in describing the present invention, if it is determined that a detailed description of a known technology related to the present invention may unnecessarily obscure the gist of the present invention, the detailed description thereof will be omitted. The attached drawings are intended to facilitate an understanding of the embodiments disclosed in this specification, and the technical ideas disclosed in this specification should not be limited by the attached drawings.

[0089] FIG. 3 is a diagram showing the appearance of the clothing processing device 10 according to the present invention.

[0090] The clothing treatment device according to one embodiment of the present invention includes a cabinet 100 that forms the exterior.

[0091] The cabinet 100 includes a front panel 110 that forms the front surface of the clothing treatment device, and the front panel 110 is provided with an input port 111 that communicates with a drum 200 described later, and a door 130 that is rotatably connected to the cabinet to open and close the input port 111.

[0092] The front panel 110 is provided with a control panel 117. The control panel 117 is provided with an input unit 118 through which a user inputs control commands, and a display unit 119 that outputs information such as user-selectable control commands. The control commands include drying courses or drying options for carrying out a series of drying steps. The control panel 177 is provided with a main control unit that controls commands for carrying out the drying courses or drying options.

[0093] The input unit 118 includes a power supply request unit that requests power supply to the clothing processing device, a course input unit that allows the user to select a desired course from among a number of courses, and an execution request unit that requests the start of the course selected by the user.

[0094] The display unit 119 includes either a display panel capable of outputting text and graphics, or a speaker capable of outputting audio signals and sounds.

[0095] Meanwhile, the clothing treatment device according to the present invention includes a water storage unit 7 for separately storing moisture generated in the process of drying clothing. The water storage unit 7 includes a water storage tank that can be pulled out from one side of the front panel 110. The water storage tank collects condensed water transferred from a washing pump, which will be described later. Thus, a user can pull out the water storage tank from the cabinet 1 to remove the condensed water, and then reattach it to the cabinet 100. Therefore, the clothing treatment device according to the present invention can be used even in places where there is no sewer pipe.

[0096] On the other hand, the water storage section 7 is disposed above the door 130. This requires the user to bend slightly when pulling the water tank out from the front panel 110.

[0097] Meanwhile, the clothing treatment device according to the present invention further includes a steam unit 195 that supplies steam to the clothing (or inside the cabinet). The steam unit 195 generates steam from condensed water discharged from the clothing, or generates steam by receiving fresh water that is not condensed water. The steam unit 195 generates steam by heating water, using ultrasonic waves, or vaporizing water.

[0098] The steam unit 195 generates steam by receiving a certain amount of water, and therefore occupies a certain volume. At this time, the front panel 110 of the cabinet is provided with a door and a control panel 117, and the rear panel 120 of the cabinet is provided with a duct for supplying and discharging air to and from the drum, a water supply unit, and the like. Therefore, it is advantageous to arrange the steam unit 195 inside the side panel 140 of the cabinet.

[0099] In addition, the clothing treatment device according to the present invention includes a steam control unit 800 for separately controlling the steam unit 195. The steam control unit 800 is provided in the control panel 117, but may be provided as a separate control panel in order to prevent overloading of the control panel 117 and to prevent an increase in manufacturing costs.

[0100] The steam control unit 800 is provided adjacent to the steam unit 195. The steam control unit 800 is provided on the side panel 140 where the steam unit 195 is provided, so that the length of the control lines connected to the steam unit 195 can be reduced.

[0101] Because the steam unit 195 provides the steam that contacts the clothes, it is desirable to generate steam with fresh water. The water collected in the water reservoir 7 is generated from the clothes and may contain lint or other foreign matter, making it unsuitable for generating steam.

[0102] Therefore, the clothing treatment device according to the present invention includes a water supply unit 160 that supplies water to the steam unit 195 and is provided separately from the water storage unit 7. The water supply unit 160 stores fresh water or receives fresh water from an external source and supplies it to the steam unit 195.

[0103] For example, the water supply unit 160 includes an external supply unit 180 that receives water from an external water source and delivers it to the steam unit 195 , and an internal supply unit 170 that stores fresh water separately and supplies it to the steam unit 195 .

[0104] The internal supply unit 170 includes a water tank 171 that stores fresh water and is provided separately from the water storage unit 7. The water tank 171 and the steam unit 195 are installed at different heights so that water in the water tank 171 is supplied to the steam unit 195 by its own weight.

[0105] If it is not possible to ensure the difference in installation height between water tank 171 and steam section 195, it is desirable to further provide water pump 172. When water pump 430 is provided, the space within cabinet 1 can be utilized more compactly.

[0106] Thus, the water supply section 160 further includes a water pump 172 which supplies water from a water tank 171 to the steam section 195, and a tank housing 173 which mounts the water tank 171 and the water pump 172 within the cabinet.

[0107] The external supply 180 is connected to an external water source and includes a direct water valve through which water is supplied.

[0108] In addition, the clothing treatment device according to the present invention further includes a decision unit 196 for deciding which of the external supply unit 180 and the internal supply unit 170 should be used preferentially to supply water to the steam unit 195 .

[0109] The decision unit 196 decides whether the external supply unit 500 or the internal supply unit 400 should be used with priority.

[0110] The water tank 171 stores fresh water. It is preferable that the water tank 171 is exposed to the outside of the cabinet 100 so that the water tank 171 can be filled with fresh water as needed.

[0111] Meanwhile, the water tank 171 may be provided in a removable manner in the cabinet 100. This allows the user to remove the water tank 171 from the cabinet 100 and easily fill it with water.

[0112] The water tank 171 is pulled out through the front panel 110. However, if the water tank is also pulled out through the front panel 110, it is difficult to secure an area for pulling out the water tank 171 due to the area of ​​the control panel 117 that is occupied by the front panel 110.

[0113] Therefore, the water tank 171 can be pulled out through the top panel 130 to prevent interference with the control panel 117.

[0114] On the other hand, since the water tank 171 also stores water, and the water storage unit 7 also stores water, the user may be confused. Therefore, in the clothing treatment device according to the present invention, the water tank 171 and the water storage unit 7 may be exposed from the cabinet in different directions or positions.

[0115] That is, the water tank 171 is exposed to the upper panel 130, and the water storage unit 7 is exposed to the front panel 11. This makes it possible to prevent a user from confusing the water tank 171 with the water storage unit 7 even if both are provided. In addition, the water tank 171 has a smaller volume than the water storage unit 7 because it must store fresh water and maintain the freshness of the stored water. Therefore, a user can distinguish between the water tank 171 and the water storage unit 7 based on the difference in volume.

[0116] The water tank 171 has a smaller volume than the water storage unit 7, and can therefore be easily pulled out from the top. Therefore, the water tank 171 can be provided so as to be pulled out upward from the upper panel 130. As a result, the pull-out directions of the water tank 171 and the water storage unit 7 are different from each other, further reducing the possibility of confusion by the user.

[0117] The upper panel 130 of the clothing treatment device according to the present invention is provided with a tank pull-out hole or pull-out hole 131 for exposing the water tank 171 to the outside or for pulling the tank 171 out of the cabinet. The tank pull-out hole 131 has a cross-sectional area corresponding to the cross-sectional area of ​​the water tank 171 or slightly larger than that of the water tank 171.

[0118] The top panel 130 further includes a drawer cover 132 that covers the tank pull-out hole 131 to prevent the water tank 171 from being pulled out arbitrarily.

[0119] The laundry treatment device according to the present invention further includes a filter for removing foreign matter from the circulation flow path. The front panel 110 is provided with a filter mounting hole 113 through which the filter can be inserted or removed.

[0120] FIG. 4 is a diagram showing the inside of the clothing processing device according to the present invention.

[0121] The clothing treatment device according to the present invention includes a drum 200 that is accommodated in a cabinet 100 and accommodates clothing therein, a driving unit (M) that rotates the drum 200, and a hot air supplying unit 900 that supplies hot air to the drum 200.

[0122] Drum 200 is cylindrical and contains clothes. In addition, since there is no need to put water into drum 200 and no need to discharge water condensed in drum 200 to the outside, through holes provided along the periphery of drum 200 can be omitted.

[0123] The driving unit (M) is directly connected to the drum 200 to rotate the drum 200. For example, the driving unit (M) is a DD (Direct Drive unit) type. As a result, the driving unit (M) can control the rotation direction or the rotation speed of the drum 200 by directly rotating the drum 200 without using a configuration such as a belt and pulley.

[0124] In general, in the case of a DD type washing machine, the driving unit (M) is connected and fixed to a tub that houses the drum 200, and the drum 200 is connected to the driving unit (M) and supported by the tub. However, in the clothes treating device according to the present invention, the tub that is fixed to the cabinet 100 to house the drum 200 is omitted because the device is focused on the drying process.

[0125] Accordingly, the clothing treatment device according to the present invention further includes a support part 400 for fixing or supporting the drum 200 or the driving part (M) within the cabinet 100.

[0126] The support unit 400 includes a front case 410 provided in front of the drum 200, and a rear case 420 provided behind the drum 200. The front case 410 and the rear case 420 are plate-shaped and are provided such that the front and rear of the drum 200 face each other. The distance between the front case 410 and the rear case 420 is set to be the same as the length of the drum 200 or longer than the length of the drum 200. The front case 410 and the rear case 420 are fixed and supported by the bottom surface of the cabinet 100 or a hot air supply unit 900 described later.

[0127] Since the input port of the drum 200 is located at the front, it is preferable that the driving unit (M) is located in the rear case 420 rather than in the front case. The rear case 420 is formed so that the driving unit (M) is attached and supported in an area facing the rear surface of the drum 200. As a result, the driving unit (M) can rotate the drum 200 while being stably fixed in position via the rear case 420.

[0128] Either the front case 410 or the rear case 420 rotatably supports the drum 200. Either the front case 410 or the rear case 420 houses the front end or the rear end of the drum 200 rotatably.

[0129] For example, the front of the drum 200 is accommodated in the front case 410 and supported for free rotation, and the rear of the drum 200 is separated from the rear case 420 and is connected to a driving unit (M) attached to the rear case 420, so that the rear is indirectly supported by the rear case 420. This minimizes the area where the drum 200 comes into contact with or rubs against the support unit 400, and can prevent the generation of unnecessary noise and vibration.

[0130] Of course, the drum 200 may be rotatably supported by both the front case 410 and the rear case 420 .

[0131] The hot air supply unit 900 forms a circulation flow path that discharges the air inside the drum 200 to the outside and feeds it into the drum 200, and dries the clothes stored in the drum 200 by heating the circulating air or condensing the moisture in the circulating air.

[0132] The hot air supplying unit 900 is preferably disposed at the bottom of the drum 200 so that the inlet of the drum 200 is disposed at a relatively high position and the user can easily remove the clothes from the drum 200 .

[0133] The hot air supplying unit 900 includes a plurality of heat exchangers for cooling or heating the air flowing therethrough, and also includes a cleaning unit 940 for removing foreign matter adhering to the heat exchangers using condensed water in the air.

[0134] The hot air supplying unit 900 supplies air into the drum 200 through the front case 410 and discharges the air toward the rear case 420 .

[0135] A duct cover 430 is attached to the rear case 420 to guide hot air supplied from the hot air supply unit 900 to the rear surface of the drum 200. The duct cover 430 exposes the driving unit (M) to the outside to cool the driving unit (M). The cabinet 100 further includes a blocking plate 120 to prevent the duct cover 430 and the driving unit (M) from being exposed to the outside to prevent a safety accident.

[0136] The front-to-rear length (T1) of the cabinet is the length from the front case 410 to the rear panel 120. Strictly speaking, the length of the cabinet is from the front panel 120 to the rear panel 120, but since the length from the front case 410 to the rear panel 120 corresponds to the allowable space in which the internal configuration of the clothing processing device according to the present invention is provided, the length of the allowable space (T1 = allowable length) is simply referred to as the length of the cabinet.

[0137] Once the allowable length (T1) is determined, the length (T2) of the drum 200 and the length (T3) of the drive section are determined. The allowable length (T1) includes the drum length (T2) and the drive section length (T3), and is equal to or less than the sum of the drum length (T2) and the drive section length (T3).

[0138] On the other hand, if the rear panel 120 is omitted, the rear case 420 may form the rear surface of the cabinet.

[0139] FIG. 5 is a diagram showing the drum of the laundry treatment device according to the present invention.

[0140] The drum 200 of the clothing treatment device according to the present invention is not indirectly rotated by being connected to a belt or the like, but is directly connected to the driving unit (M) and rotated. Therefore, unlike the drum of a conventional dryer, which is cylindrical with open front and rear ends, the drum 200 of the clothing treatment device according to the present invention is directly connected to the driving unit (M) with the rear closed.

[0141] Specifically, the drum 200 includes a cylindrical drum body 210 for accommodating clothes, and a drum rear surface 220 coupled to the rear of the drum body 210 to form the rear surface of the drum.

[0142] The drum rear surface 220 covers the rear of the drum body 210 and provides a space directly connected to the driving unit (M). That is, the drum rear surface 220 is connected to the driving unit (M) and receives power directly to rotate the drum body 210. As a result, an input port 211 through which clothes are input is formed in the front of the drum body 210, and the rear is covered by the drum rear surface 220.

[0143] A bushing unit 300, which is connected to the driving unit (M), is connected to the drum rear surface 220. The bushing unit 300 is provided on the drum rear surface 220 and forms the rotation center of the drum 200. The bushing unit 300 may be formed integrally with the drum rear surface 220, but is made of a material that is stronger in rigidity and durability than the drum rear surface 220 so as to be firmly connected to the rotation shaft extending from the driving unit (M). The bushing unit 300 is connected to the center of the drum rear surface 220.

[0144] The drum rear surface 220 includes a circumferential portion 221 coupled to the outer circumferential surface of the drum body 210, and a seat portion 223 provided inside the circumferential portion 221 and coupled to the driving portion (M). The seat portion 223 may include a through hole to which the bushing portion 300 is coupled and through which the bushing portion 300 is inserted.

[0145] Between the circumferential portion 221 and the seat portion 223, there is provided a suction hole 224 for guiding the hot air supplied from the hot air supplying portion 900 so that it is introduced into the drum body 210. The suction hole 224 is made up of a plurality of holes provided penetrating the drum rear surface 220, or is made up of a mesh-like net.

[0146] In order to prevent the stiffness of the drum back surface 220 from decreasing due to the suction holes 224, a reinforcing rib 225 for reinforcing the stiffness of the drum back surface 220 is further provided. The reinforcing ribs 225 extend radially from the outer circumferential surface of the seat portion 223 toward the inner circumferential surface of the circumferential portion 221. A circumferential rib 226 is further provided extending in the circumferential direction of the drum back surface 220 so as to connect the reinforcing ribs 225 to each other. Suction holes 224 are disposed between the reinforcing ribs 225 and the circumferential rib 226, and between the seat portion 223 and the circumferential portion 221, so that the reinforcing rib 225 and the circumferential rib 226 enable the drum back surface 220 to maintain its shape even when a rotational force is transmitted from the driving unit (M) to the drum back surface 220.

[0147] Meanwhile, one or more reinforcing beads 212 are provided on the outer circumferential surface of the drum body 210 to reinforce the rigidity of the drum body 210. The reinforcing beads 212 are recessed or protruded inward or outward along the circumference of the drum body 210, and a plurality of reinforcing beads 212 may be disposed at intervals along the length of the drum body 210.

[0148] This prevents the drum body 210 from twisting even when a large amount of clothes is stored in the drum body 210 or when a rotational force is suddenly transmitted through the driving unit (M).

[0149] As a result, the drum 200 of the clothing treatment device according to the present invention is not rotated by a belt or the like, but is rotated by the rear surface 220 of the drum being directly connected to the drive unit (M).

[0150] Therefore, even if the driving unit (M) changes the rotation direction or the rotation speed is fast, the drum 200 of the clothes treating device according to the present invention can immediately reflect it and rotate.

[0151] FIG. 6 is a diagram showing the internal configuration of a clothing processing device according to the present invention.

[0152] As described above, the drum 200 is cylindrical and includes the drum body 210 that is open at the front and rear, and the drum rear surface 220 that is connected to the rear of the drum body 210 and closes the rear of the drum body 210.

[0153] A rotating shaft extending from the driving part (M) is directly coupled to the bushing part 300 .

[0154] The front case 410 includes a front plate 411 forming a main body, and an input communication hole 412 penetrating the front plate 411 and accommodating the front or input port 211 of the drum body 210. A gasket 413 for accommodating the drum body 210 is provided on the outer circumferential surface of the input communication hole 412.

[0155] The gasket 413 rotatably supports the input port 211 of the drum body 210 and is capable of contacting the outer circumferential surface of the input port 211. The gasket 413 prevents hot air inside the drum 200 from leaking between the drum body 210 and the front plate 411. The gasket 413 is made of a plastic resin or an elastic body, and another sealing member is further bonded to the inner circumferential surface of the gasket 413 to prevent clothes or hot air from escaping to the front plate 411 through the input port 211 of the drum body 210.

[0156] Meanwhile, a duct communication hole 419 is formed on the inner peripheral surface of the gasket 413 or the input communication hole 412, which communicates with the drum body 210 and through which the air input into the drum body 210 is discharged. A flow path connecting the duct communication hole 419 and the hot air supply unit 900 is provided inside the front plate 411. Thus, the duct communication hole 419 guides the air discharged from the drum body 210 to be supplied to the hot air supply unit 900.

[0157] A filter member is provided in the duct communication hole 419 to prevent foreign matter and lint discharged from the drum 200 from entering the hot air supplying part 900 .

[0158] The front case 410 includes a front wheel 415 that is installed in contact with the outer circumferential surface of the drum body 210 and rotatably supports the drum 200. The front wheels 415 support the outer circumferential surface of the input port of the drum body 210, and a plurality of the front wheels 415 are installed spaced apart along the outer circumferential surface of the input communication hole 412. The front wheels 415 support the lower part of the drum body 210 and rotate together with the drum 200 when the drum 200 rotates.

[0159] Further, a stopper 500 for preventing the drum body 210 from coming off is coupled to the front case 410. The stopper 500 may be disposed on a stopper mounting portion 416 disposed on the front case 410 above the input communication hole 412.

[0160] The front case 410 is provided with a tank support hole 414 through which the water tank of the water tank 7 is pulled out or supported. The tank support hole 414 is provided in an area of ​​the front panel 110 corresponding to the portion where the water tank 7 is disposed, and is formed penetrating the front case 410.

[0161] A cutout 417 supported by the hot air supply unit 900 is provided at the bottom of the front case 410. The cutout 417 prevents the front case 410 from interfering with the hot air supply unit 900. The cutout 417 communicates with a supply duct of the hot air supply unit 900 to transfer the air in the drum supplied to the duct communication hole 419 to the hot air supply unit 900.

[0162] The hot air supplying section 900 includes a circulation flow path 920 through which air discharged from the drum 200 circulates. The circulation flow path 920 is in the form of a duct arranged outside the drum 200. The circulation flow path 920 includes a supply duct 921 that communicates with the duct communication hole 419 and to which air from the drum 200 is supplied, a moving duct 922 through which the air supplied from the supply duct 921 moves, and a discharge duct 923 through which the air that has passed through the moving duct 922 is discharged.

[0163] The supply duct 921 communicates with a cutout 417 in the front case 410 and communicates with a flow path provided within the front case 410. The moving duct 922 extends from the end of the supply duct 921 toward the rear of the drum 200, and the exhaust duct 923 is provided at the end of the moving duct 922 to guide air to the drum 200.

[0164] Meanwhile, a heat pump 950 for cooling or heating air is provided inside the hot air supply unit 900. The heat pump 950 includes an evaporator 951 that is provided inside the moving duct 922 and cools the air to condense moisture contained in the air, and a condenser 952 that is located downstream of the evaporator 951 or toward the exhaust duct 923 and reheats the air. The heat pump 950 further includes an expansion valve that cools the refrigerant that has passed through the condenser 952 and guides it back to the evaporator 951, and a compressor 953 that pressurizes and heats the refrigerant that has passed through the evaporator 951 and supplies it to the condenser 952. The compressor 953 is provided outside the moving duct 922.

[0165] The evaporator 951 and the condenser 952 are heat exchangers through which the refrigerant flows.

[0166] The hot air supplying unit 900 further includes a connector 930 that communicates with the exhaust duct 923 and guides the hot air to the rear of the drum 200 or to the duct cover 430. The connector 930 is provided on the upper part of the exhaust duct 923 and guides the hot air that has passed through the condenser 952 and been heated to a position rearward of the exhaust duct 923.

[0167] Meanwhile, the hot air supply unit 900 further includes a blower fan 9531 for moving the air in the drum 200 to the supply duct 921 or for blowing the air that has passed through the exhaust duct 923 into the drum 200. The blower fan 9531 is provided in the exhaust duct 923 and is controlled by the main control unit together with the driving unit (M).

[0168] The rear case 420 includes a rear plate 421 facing the front plate 411. The rear case 420 includes an attachment portion 429 to which the driving unit (M) is coupled and placed. The attachment portion 429 penetrates the rear case 420, and the driving unit (M) is attached to the attachment portion 429 and fixed inside the cabinet 100. The attachment portion 429 supports the load of the driving unit (M), and the driving unit (M) is provided at a position corresponding to the drum rear surface 220.

[0169] The rear plate 421 is further formed with an air movement hole 423 that communicates with the connector 930 and through which air flows in, and a communication hole 424 that discharges the air that has passed through the air movement hole 423 to the drum rear surface 220.

[0170] A duct cover 430 is attached to the rear surface of the rear plate 421 to form a flow path for moving the air flowing in through the connector 930 to the intake hole 224 provided in the drum rear surface 220 .

[0171] The duct cover 430 is connected to the rear plate 421 but is spaced apart from the intake holes 224 to form a space between the rear plate 421 and the duct cover 430 through which air moves.

[0172] Duct cover 430 covers all communication holes 424 so that none of the communication holes 424 is exposed to the outside. As a result, air that has flowed into duct cover 430 is entirely discharged through communication holes 424, preventing leakage to the outside. Duct cover 430 houses driving part (M) at a distance from the outer circumferential surface of driving part (M) to prevent interference with driving part (M), and exposes driving part (M) to the outside to induce cooling of driving part (M).

[0173] Meanwhile, since the duct cover 430 is heated by hot air and the driving unit (M) also has a rotating rotor, a rear panel 120 is disposed behind the duct cover 430 to shield them. The rear panel 120 is coupled to the rear case 420 to prevent the duct cover 430 and the driving unit (M) from being exposed to the outside. The rear panel 120 is disposed apart from the duct cover 430 and the driving unit (M).

[0174] The driving unit (M) includes a motor unit 600 that provides power to rotate the drum 200. The motor unit 600 includes a stator 610 that generates a rotating magnetic field, and a rotor 620 that is rotated by the stator 610.

[0175] The rotor 620 is an outer rotor type that houses the stator 610 and rotates around the stator 610. In this case, a rotating shaft may be coupled to the rotor 620 and directly connected to the drum 200 by passing through the stator 610 and the mounting portion 429. In this case, the rotor 620 directly transmits power to rotate the drum 200.

[0176] Meanwhile, the rotor 620 is rotated by the stator 610 at a high RPM, for example, at a higher RPM than the RPM at which the clothes within the drum 200 can rotate while still adhering to the inner wall of the drum 200.

[0177] However, if the clothes inside the drum 200 are stuck to the inner wall of the drum 200 while rotating, the clothes stuck to the inner wall of the drum are not exposed to the hot air, which reduces the drying efficiency.

[0178] If the rotor 620 rotates at a low RPM so that the clothes inside the drum 200 roll or agitate instead of sticking to the inner walls of the drum 200, a problem occurs in which the power or torque generated by the driving unit (M) cannot be properly utilized.

[0179] Therefore, the driving unit (M) of the clothing treatment device according to the present invention further includes a reducer 700 that reduces the RPM to utilize the maximum output of the motor unit 600 while increasing the torque.

[0180] The reducer 700 connects the motor unit 600 and the drum 200. The reducer 700 converts the power of the motor unit 600 to rotate the drum 200. The reducer 700 is disposed between the motor unit 600 and the drum 200 and receives power from the motor unit 600, converts the power, and transmits it to the drum 200. The reducer 700 converts the RPM of the rotor to a lower RPM, but increases the torque value before transmitting it to the drum 200.

[0181] Specifically, the reducer 700 is coupled to a drive shaft 630 that extends from the rotor unit 610 and rotates together with the rotor unit 610. A gear box that meshes with the drive shaft 630 to rotate and change the rpm of the drive shaft 630 to increase the torque is provided inside the reducer 700, and the gear box is connected to a rotating shaft 740 that is coupled to the drum 200 and rotates the drum. Therefore, when the drive shaft 630 rotates, the rotating shaft 740 rotates at a lower RPM than the drive shaft 630, but can rotate with a larger torque.

[0182] The performance of the reducer 700 varies depending on whether the driving shaft 630 and the rotating shaft 740 are coaxial. That is, if the driving shaft 630 and the rotating shaft 740 are misaligned, the connection between the components constituting the gear box in the reducer 700 and either the driving shaft 630 or the rotating shaft 740 may loosen or be released. As a result, the power of the driving shaft 630 may not be properly transmitted to the rotating shaft 740, or the driving shaft 630 may spin freely.

[0183] Furthermore, even if the drive shaft 630 and the rotating shaft 740 are temporarily misaligned, the gear boxes in the reducer 700 will become misaligned and collide with each other, generating unnecessary vibrations and noise.

[0184] Furthermore, if the angle at which the drive shaft 630 and the rotating shaft 740 are temporarily misaligned becomes too large, the gear box in the reducer 700 may completely come out of its normal position or may be damaged.

[0185] As a result, if the drive shaft 630 and the rotating shaft 740 cannot be maintained coaxially with each other or are not arranged parallel to each other even temporarily, the performance of the reducer 700 cannot be guaranteed and the drum 200 cannot be rotated as intended.

[0186] Therefore, in general, a clothing treatment device equipped with a reduction gear has the reduction gear and the motor fixed to a support that maintains its original state without deformation even when an external force is applied.

[0187] For example, in the case of a washing machine, the tub that houses the drum is first fixed to the cabinet, and then the motor and reducer are secondarily fixed to the rigid bearing housing that is built inside the tub using injection molding.In addition, a fixed steel plate that is connected to the tub is placed on the outside of the tub, and the motor and reducer are fixed to the fixed steel plate.

[0188] Therefore, even if a considerable vibration occurs in the tub, the reducer and the driving unit will tilt or vibrate together with the bearing housing and the fixed steel plate. As a result, the reducer and the driving unit themselves can always maintain a connected state, and the driving shaft and the rotating shaft can be maintained in a coaxial state.

[0189] However, since the laundry treatment device according to the present invention is a dryer, the structure of a tub fixed inside the cabinet is omitted. Also, since the rear panel 120 of the cabinet is made of a relatively thin plate, even if the stator 610 is fixed, the rear panel 120 easily vibrates or bends due to the repulsive force when the rotor 620 or the drive shaft 630 rotates. If the rear panel 120 vibrates or bends temporarily, the rotation shaft 740 and the drive shaft 630 arranged to be connected to the drum 200 bend, causing a problem of misalignment between the rotation shaft 740 and the drive shaft 630.

[0190] In addition, since the rear panel 120 is made of a thin steel plate, it cannot support both the reducer 700 and the motor unit 600. For example, if the reducer 700 and the motor unit 600 are coupled to the rear panel 120 in parallel, a rotational moment is generated due to the overall length and weight of the reducer 700 and the motor unit 600, causing the reducer 700 to sag downward. As a result, the rotating shaft 740 coupled to the drum is misaligned with the reducer 700 and is unable to maintain its coaxiality with the driving shaft 630.

[0191] In addition, the rear panel 120 cannot support the motor unit 600 itself. The rear panel 120 has a problem that the surface on which the motor unit 600 is provided bends downward due to the weight of the motor unit 600. The rear panel 120 is not originally configured to be suitable for mounting the motor unit 600 itself.

[0192] Meanwhile, it is considered that the stator 620 is coupled to the rear case 420 to support the motor unit 600. If a large amount of clothes is stored in the drum 200 or eccentricity occurs, the rotating shaft 740 may shift in accordance with the arrangement of the clothes every time the drum 200 rotates. In this case, since the stator 610 is separated from the drum 200 and fixed to the rear case 420, the rotating shaft 740 vibrates at a different amplitude or tilts at a different angle from the stator 610. Therefore, the rotating shaft 740 and the driving shaft 630 cannot maintain the same axis.

[0193] In addition, the drum 200 is supported by the front case 410 and the rear case 420, or the installation position is fixed at a constant level by the stopper 500 described below. Therefore, the position of the rotating shaft 740 connected to the drum 200 is also fixed at a constant level. Therefore, even if the drum 200 vibrates, the vibration is buffered by either the front case 410 or the rear case 420 or the stopper 500.

[0194] However, when vibrations generated in drum 200 are transmitted to motor unit 600, the vibration amplitude of motor unit 600 and rear case 420 is larger than the vibration amplitude of rotating shaft 740 even if reducer 700 and motor unit 600 are fixed to rear case 420. In this case, there is also a possibility that drive shaft 630 and rotating shaft 740 may not be able to maintain the same axis.

[0195] To solve this problem, the clothing processing device according to the present invention couples and fixes the motor unit 600 to the reducer 700. In other words, the reducer 700 itself serves as a reference point for the entire driving unit (M). That is, the reducer 700 serves as a reference for the vibration and tilt angle of the entire driving unit (M).

[0196] Since the motor unit 600 is not fixed to other components of the clothing processing device, but is fixed only to the reducer 700, when vibration or external force is transmitted to the driving unit (M) and the reducer 700 tilts or vibrates, the motor unit 600 always tilts or vibrates at the same time as the reducer 700.

[0197] As a result, the reducer 700 and the driving section 600 form one vibration system, and the reducer 700 and the driving section 600 do not move relative to each other, but can maintain a fixed state.

[0198] In the driving part 600, the stator 610 is directly coupled and fixed to the reducer 700. As a result, the position of the driving shaft 630 based on the reducer 700 does not change. The centers of the driving shaft 630 and the reducer 700 are aligned with each other, and the driving shaft 630 rotates while maintaining the same axis as the center of the reducer 700.

[0199] The above-mentioned meaning of "coaxial" and "aligned" does not mean perfectly physically coaxial and aligned, but is a concept that allows for a range of tolerance recognized in mechanical engineering or a level of coaxiality or alignment that a person skilled in the art would recognize. For example, the range in which the drive shaft 630 and the rotation shaft 740 are misaligned within 5° can be defined as the coaxial or aligned state.

[0200] The drive shaft 630 rotates based on the reducer 700, but is fixed to prevent tilting, and the stator 610 is also fixed to the reducer 700, so that the gap between the stator 610 and the rotor 620 is always maintained. As a result, collision between the stator 610 and the rotor 620 is prevented, and noise and vibrations generated by the change in the center of rotation as the rotor 620 rotates the stator 610 can be essentially blocked.

[0201] The rotating shaft 740 extends toward the drum 200 within the reducer 700, vibrates together with the reducer 700, and tilts together with the reducer 700. That is, the rotating shaft 740 is only provided to rotate in the reducer 700, and the position at which it is provided is fixed. As a result, the rotating shaft 740 and the driving shaft 630 are always arranged in parallel to each other and form a coaxial structure. In other words, the center of the rotating shaft 740 and the center of the driving shaft 630 are maintained in a state of being aligned with each other.

[0202] The reducer 700 and the motor unit 600 are arranged along a first axis (S1) parallel to the ground when there is no load on the drum 200 or when the motor unit 600 is not operating. The drive shaft 630 and the rotation shaft 740 are also arranged in parallel along the first axis (S1).

[0203] However, when vibration occurs in the drum 200 or the motor unit 600, the vibration is transmitted to the reducer 700, causing the reducer 700 to vibrate or tilt, resulting in the reducer 700 temporarily tilting toward the second axis (S2).

[0204] At this time, since the motor unit 600 is coupled to the reducer 700, it vibrates or tilts together with the reducer 700 and is disposed parallel to the second axis (S2). Therefore, the driving shaft 630 and the rotating shaft 740 are also disposed parallel to the second axis (S2).

[0205] As a result, even if the reducer 700 tilts, the motor section 600 moves integrally with the reducer 700, and the drive shaft 630 and the rotating shaft 740 remain coaxial.

[0206] Therefore, the drive shaft 630 and the rotating shaft 740 are always inclined with respect to the reducer 700, so that the reducer 700 serves as the action point (P1) of a lever or a seesaw. That is, the reducer 700 serves as the first action point (P1) of a vibration system including the motor unit 600. Meanwhile, the reducer 700 is connected to the drum 200 via the rotating shaft 740, and the drum 200 is separated from the rear case 420, so that the load of the drum 200 is transmitted to the reducer 700. The reducer 700 can serve as the reference or action point (P1) of the vibration system, in which not only the motor unit 600 but also the system including the drum 200 forms one vibration system.

[0207] Although the reducer 700 itself serves as the center or point of application (P1) of the vibration system, it must be fixed or supported within the cabinet 100.

[0208] For this purpose, the reducer 700 is coupled and fixed to the rear case 420. In this case, since the reducer 700 tilts or vibrates while coupled to the rear case 420, it can be said that the rear case 420 serves as the center of a vibration system including the reducer 700, the motor unit 600, and the drum 200. Even in this case, the motor unit 600 is not directly coupled to the rear case 420 even though it can come into contact with it, but is only coupled and fixed to the reducer 700.

[0209] Specifically, the mounting portion 429 of the rear case 420 serves as a second action point (P2) of the lever or seesaw formed by the reducer 700, the motor unit 600, and the drum 200.

[0210] After the reducer 700, the motor unit 600 and the drum 200 are arranged in parallel along the first axis (S1), the reducer 700 becomes parallel to the third axis (S3). The third axis (S3) passes through the reducer 700 coupled to the rear case 420. At this time, since the reducer 700 and the motor unit 600 are coupled, the motor unit 600 also becomes parallel to the third axis (S3).

[0211] As a result, the driving part 600 and the drum 200 are coupled to the reducer 700, and the driving part 600 and the drum 200 are inclined parallel to each other with the reducer 700 as a reference or vibrate simultaneously.

[0212] In the clothes treating device according to the present invention, the drum 200 is not connected to a belt, but is supported by the speed reducer 700. Therefore, when the drum 200 is rotated by the speed reducer 700, it is lifted upward or tilted downward by centrifugal force or the like.

[0213] To prevent this, the clothing treatment device according to the present invention further includes a stopper 500 for fixing the position of the drum 200. The stopper 500 includes a front stopper 510 disposed in front of the drum 200 and a rear stopper 520 disposed in the rear of the drum.

[0214] At this time, the drum 200 is lifted upward with respect to the rotation axis 740. Therefore, the front stopper 510 is disposed so as to contact the upper part of the front side of the drum.

[0215] In addition, the drum 200 may sag due to the weight of the clothes. Therefore, the rear stopper 520 is disposed so as to contact the rear lower part of the drum 200.

[0216] The front stopper 510 is coupled to the mounting portion 416 of the front case 410 , and the rear stopper 520 is supported on the upper portion of the heat exchanger 900 .

[0217] FIG. 7 is a diagram showing a stopper 500 for supporting the drum 200 of the laundry treatment device according to the present invention.

[0218] The drum 200 rotates by being coupled to the free end of the rotating shaft 740. The rotating shaft 740 is fixed to the reducer 700 to prevent it from slipping out of the reducer 700.

[0219] However, the drum 200 may shift upward or downward due to the weight of the clothes or clothes falling during rotation, etc. As a result, the drum 200 may shift upward or downward based on the free end of the rotating shaft 740.

[0220] In particular, the drum 200 vibrates or tilts separately based on the free end of the rotating shaft 740. That is, the drum 200 is made of a material having elasticity and allowing a certain level of deformation. This prevents excessive vibration or external force from being transmitted to the rotating shaft 740, and prevents the alignment of the rotating shaft 740 and the driving shaft 630 from becoming misaligned.

[0221] In addition, since the drum 200 is not fixed by a belt or the like, when it rotates with clothes stored therein, excessive vibration energy is generated.

[0222] Meanwhile, a front case 410 and a rear case 420 are disposed in front and rear of the drum 200. The front case 410 can be prevented from directly contacting the front of the drum 200 via the input communication hole 412 and the gasket 413. However, since the rear of the drum 200 is directly connected to the rotating shaft 740, the rear of the drum body 210 is shielded by the drum rear face 220, and the rear case 420 must be provided with a mounting part 429 for fixing the driving part (M) in a portion directly facing the drum rear face 220. That is, the rear case 420 cannot be disposed with a through hole on one surface facing the drum, unlike the front case 410.

[0223] Therefore, if the rear case 420 rotatably supports the rear or back surface of the drum 200 like the front case 410, there is a risk of direct friction and collision between the drum back surface 220 and the rear case 420.

[0224] Specifically, the rear case 420 has many parts that interfere with the drum back surface 220 due to the drum accommodating groove 422, the air movement hole 423, and the mounting portion 429, which will be described later. If the rear case 420 directly supports the drum 200 under such circumstances, the drum back surface 220 and the rear case 420 may be worn or damaged.

[0225] Therefore, the rear case 420 must be kept spaced apart from the drum 200 by a certain distance, and the rear case 420 itself cannot directly support the drum 200.

[0226] In addition, when drum 200 is rotated with a large amount of clothes stored therein, since there is no belt or the like, there is a possibility that drum 200 may rotate while moving in the direction of front case 410 or rear case 420.

[0227] Taking all of these factors into consideration, the laundry treatment device of the present invention further includes a stopper 500 that limits the movement of the drum 200 within an acceptable range.

[0228] The stopper 500 includes a front stopper 510 that is connected to the front case 410 and supports the front upper end of the drum, a support wheel 533 that is rotatably mounted on the front case 410 and supports the front lower end of the drum, and a rear stopper 520 that is connected to the rear case 420 and supports the rear lower end of the drum.

[0229] The drum 200 is supported and rotated by the driving unit (M) and the support wheel 533, and a front stopper 510 and a rear stopper 520 are provided to restrict the drum 200 from moving excessively. As a result, the front stopper 510 and the rear stopper 520 mitigate vibrations and temporary shocks of the drum 200, and the front stopper 510 and the rear stopper 520 can prevent the drum 200 from being damaged.

[0230] Referring to FIG. 7(a), the front stopper 510 includes a fixed plate 5111 connected to the stopper mounting portion 416 of the front case 410, a lever plate 5112 extending rearward from the fixed plate 5111, an extension plate 5113 extending downward from the lever plate 5112, a support plate 512 provided on the support plate 5113 at the upper end in front of the drum 200, and a felt 513 connected to the lower portion of the support plate 512 and in contact with the drum 200.

[0231] As a result, when the drum 200 is lifted upward, the lever plate 5112 and the extension plate 5113 of the front stopper 510 are lifted upward to a certain level, absorbing the impact of the drum 200, and the felt 513 rubs against the front of the drum 200 to prevent the drum 200 from being lifted excessively upward.

[0232] The outer circumferential surface of the input port 211 of the drum 200 extends to a diameter smaller than that of the drum body 210 and includes a grounding portion 213 with which the support wheel 533 and the felt 513 come into contact. As a result, the felt 513 and the support wheel 533 are accurately placed on the grounding portion 213, thereby restricting the movement of the drum 200.

[0233] The front stopper 510 is disposed at a specific distance from the upper front end of the drum 200. The specific distance corresponds to a distance at which the drum 200 can come off the gasket 413 during rotation, or a range at which the drum 200 can excessively twist the rotating shaft 740.

[0234] 7(b), the front stopper 510 is composed of a support plate 512 and a contact wheel 532 in which a felt 513 is in rotatable contact with the grounding portion 213.

[0235] As a result, the support wheel 533 supports the lower part of the ground contact portion 213 , and the contact wheel supports the upper part of the ground contact portion 213 , thereby preventing the drum 200 from coming off the input communication hole 412 .

[0236] 7(c), the rear case 420 and the drum 200 are separated, the rear stopper 520 and the driving unit (M) support the rear of the drum 200, and if the drum 200 approaches too close to the rear case 420, the rear stopper 520 prevents it. As a result, damage caused by friction or contact between the rear case 420 and the drum 200 can be prevented.

[0237] The rear stopper 520 is disposed in front of the rear case 420 to prevent the drum rear surface 220 from contacting or colliding with the rear case 420. When clothes are stored in the drum 200 and the drum 200 rotates, the drum 200 generates an external force that moves the drum 200 not only upward or downward but also forward or backward because the drum 200 is not fixed by a belt.

[0238] Since the rear case 420 supports the load of the driving unit (M), it needs to be made of a material that is thicker or has greater rigidity than the front case 410. Therefore, when the drum 200 moves downward, the rear case 420 supports the drum 200 without cushioning the movement of the drum 200, and therefore, a repulsive force that pushes the drum 200 upward may be generated.

[0239] During this process, the drum 200 is strongly pressed against the front case 410, and in a severe case, the door 130 is forced open.

[0240] Therefore, the rear stopper 520 is spaced apart from the rear of the drum 200 by a reference distance and allows the drum 200 to move rearward to a certain extent. This can prevent the drum 200 from excessively pressing the front case 410.

[0241] The reference distance is the distance at which the rear surface of drum 200 and rear stopper 520 can come into contact and support drum 200 when drum 200 is loaded with a reference amount of laundry or more and drum 200 is pushed rearward as it rotates.

[0242] This allows the rear stopper 520 to support the drum 200 only when the drum 200 moves rearward of the reference interval, thereby preventing wear of the rear stopper 520. A felt that comes into contact with the drum 200 is attached to the rear stopper 520.

[0243] In addition, the drum 200 and the rear case 420 are spaced apart from each other by a reference distance or more.

[0244] The rear stopper 520 includes a support connection portion 521 supported by the bottom surface of the cabinet 100 or the hot air supply portion 900, a support leg portion 522 extending from the support connection portion 521 toward the drum 200, an extension portion 524 extending diagonally forward from the support leg 522, and a limiting portion 525 extending from the extension portion 524 to face the drum rear surface 220.

[0245] The support leg 522 further includes a cutout groove 523 therein for enhancing rigidity.

[0246] The extension 524 extends obliquely from the support leg 522 to cushion the external force applied from the drum 200 to a certain level and to strengthen the overall rigidity of the rear stopper 520.

[0247] The extension 524 includes an inclined extension 5241 extending forward from the support leg 522 and a straight extension 5242 extending upward from the inclined extension 5241 .

[0248] The limiting portion 525 includes a spaced portion 5251 extending rearward from the linear extension portion 5242 and spaced apart from the drum rear surface 220 , and a load supporting portion 5252 provided at the spaced portion 5251 to face a lower portion of the drum rear surface 220 .

[0249] In order to reinforce the rigidity of the load support portion 5252, a curved portion 5253 is further provided by bending the free end of the load support portion 5252.

[0250] The rear stopper 520 can be prevented from directly contacting the rear of the drum 200 by the separating portion 5251. Instead, the drum 200 is allowed to move rearward to a certain level.

[0251] As a result, the rear case 420 is disposed between the rear stopper 520 and the reducer 700 or the driving unit 600 .

[0252] Meanwhile, the rear stopper 520 is disposed at a certain distance from the bottom of the drum 200. The certain distance corresponds to a distance at which the drum 200 deviates from the sealing portion 490 or a distance at which the rotation axis 740 is excessively distorted.

[0253] That is, the linear extension 5242 is spaced apart from the rear of the drum 200 at a fixed distance.

[0254] FIG. 8 is a diagram showing the structure of a rear case 420 according to the present invention.

[0255] The motor unit 600 is connected and fixed to the reducer 700, and although the reducer 700 itself serves as the position and vibration reference for the driving unit (M), the reducer 700 needs to be supported and disposed on the rear surface of the drum 200 in order to rotate the drum 200.

[0256] Therefore, the reducer 700 is placed on the rear case 420 and supported within the cabinet 100. However, the motor unit 600 and the drum 200 are disposed apart from the rear case 420. This can prevent the motor unit 600 or the drum 200 from moving separately from the reducer 700 due to interference with other components other than the reducer 700.

[0257] As a result, the rear case 420 serves as the point of action of a seesaw in a vibration or rotation system including the reducer 700, the motor unit 600, and the drum 200.

[0258] The rear case 420 includes a rear plate 421 disposed on the rear side of the drum 200 and facing the front plate 411, and a drum receiving groove 422 protruding from the rear plate 421 in a shape facing the drum rear side 220. The drum receiving groove 422 is spaced apart from the drum rear side 220 and is formed to protrude from the rear plate 421 with a diameter and depth that partially receives the outer circumferential surface of the drum rear side 220. That is, the drum receiving groove 422 protrudes from the rear plate 421 by a first height (L1) so that the drum rear side 220 is partially received in front of the rear plate 421. The drum receiving groove 422 is provided with a plurality of communication holes 424 that face the suction holes 224 of the drum rear side 220 and through which air passes. Reinforcing bent portions 426 for enhancing rigidity are provided between the communication holes 424. The reinforcing bent parts 426 are formed to be recessed or protruded between the communication holes 424, to prevent the rigidity of the rear plate 421 arranged between the communication holes 424 from being weakened. The plurality of communication holes 424 are configured to supply hot air supplied from the hot air supply part 900 to the drum 200. At this time, since the drum accommodating groove 422 accommodates the drum rear surface 220, the hot air discharged from the communication holes 424 is guided to be supplied to the suction hole 224. Meanwhile, the clothing treatment device according to the present invention further includes a sealing part 450 for sealing between the drum accommodating groove 422 and the drum rear surface 220, and the sealing part 450 is accommodated and attached in the drum accommodating groove 422.

[0259] As a result, the drum receiving groove 422 not only enhances the rigidity of the rear plate 421 but also provides a space in which the sealing portion 450 is provided.

[0260] The mounting portion 490 is recessed into the drum accommodating groove 422 in the direction opposite to the direction in which the drum accommodating groove 422 protrudes. The mounting portion 490 is recessed by a depth L2 from the inner circumferential surface of the drum accommodating groove 422. By recessing the mounting portion 490 into the drum accommodating groove 422, the rigidity of the drum accommodating groove 422 can be increased, and at the same time, the overall rigidity of the rear plate 421 can be increased.

[0261] In addition, the mounting part 490 is recessed forward by L2 from the drum receiving groove 422, and is thus disposed closer to the drum rear surface 220. As a result, the distance between the reducer 700, which is attached and fixed to the mounting part 490, and the drum rear surface 220 can be reduced, and the length of the rotating shaft 740 connecting the reducer 700 and the drum rear surface 220 can be reduced accordingly, which not only ensures the durability of the rotating shaft 740, but also reduces the angle range in which the rotating shaft 740 is distorted.

[0262] In addition, the mounting part 490 is recessed into the drum receiving groove 422, but is formed to have a diameter larger than the reducer 700 and the driving part 600. As a result, at least a part of the reducer 700 and the motor part 600 is received in the mounting part 490, so that the overall thickness of the cabinet 100 can be reduced.

[0263] The mounting portion 490 includes a shaft through hole 4291 through which the rotating shaft 740 extending from the reducer 700 passes, a mounting surface 4292 provided on the outer circumferential surface of the shaft through hole 4291 and supporting the reducer 700, and a mounting groove 4294 extending rearward from the mounting surface 4292 to the drum accommodating groove. A fastening portion 4293 is provided on the mounting surface 4292 and coupled to the reducer 700 or a coupling portion 800 that couples the reducer 700 to the mounting surface 4292.

[0264] Meanwhile, at least a part of the reducer 700 or the motor unit 600 is housed in the mounting groove 4294. Accordingly, an electric wire support groove 4295 in which an electric wire for supplying current to the stator 610 is placed is formed by being recessed outward from the mounting groove 4294. The mounting groove 4294 is formed to be larger than the diameter of the driving unit (M).

[0265] The rear case 420 further includes an air movement hole 423 for transmitting the hot air supplied from the connector 930 to the duct cover 430. The air that has flowed into the air movement hole 423 flows along the duct cover 430 into the communication hole 424.

[0266] FIG. 9 is a diagram showing how the motor unit 600 of the clothing treatment device according to the present invention is coupled to a reducer 700. As shown in FIG.

[0267] The reducer 700 is attached to and supported by the mounting portion 429 to rotate the drum 200. The stator 610 is directly connected to and fixed to the reducer 700 and is spaced apart from the mounting portion 429. The rotor 620 is supported by the reducer 700 via a drive shaft 630 connected to the reducer 700 to rotate the stator 610.

[0268] The stator 610 is coupled to the reducer 700, so that the reducer 700 and the motor unit 600 are arranged coaxially (S) in parallel. The motor unit 600 has a center of rotation coaxially (S), and the reducer 700 also has a center of rotation coaxially (S).

[0269] As a result, the rotor 620 also rotates about the same axis (S), and the rotating shaft 740 extending from the reducer 700 can also rotate about the same axis (S).

[0270] The reducer 700 is directly coupled to the stator 610 so as to fix the stator 610. The stator 610 is disposed apart from the rear case 420 or the mounting portion 429.

[0271] Of course, the stator 610 may be supported in contact with the rear case 420 , or may be further coupled to the rear case 420 if it is directly fixed to the reducer 700 .

[0272] The stator 610 is coupled to a reducer 700, which converts the rpm of the drive shaft 630 to rotate a rotating shaft 740, so that the drum 200 can also rotate about the same axis (S).

[0273] Even if the reducer 700 vibrates or rotates and the coaxial line (S) becomes misaligned, the drive shaft 630 and the rotation shaft 740 are arranged parallel to the coaxial line (S).

[0274] As a result, the reducer 700 is coupled and fixed to the rear case 420.

[0275] The reducer 700 is coupled to the rear of the rear case 420 , and the drum 200 is disposed in front of the rear case 420 , so that the rear case 420 is disposed between the drum 200 and the reducer 700 .

[0276] The reduction gear 700 has a drum rotation shaft 740 that penetrates the rear case 420 to rotate the drum, and supports the load of the drum via the drum rotation shaft 740.

[0277] In addition, the rear case 420 is disposed between the drum 200 and the motor unit 600. The reducer 700 is disposed between the drum 200 and the motor unit 600 and is supported by the rear case 420.

[0278] At this time, the drum 200 and the motor unit 600 are disposed completely separated from the rear case 420. Therefore, the reducer 700 serves as a supporting center for the drum 200 and the motor unit 600.

[0279] In addition, the drum 200 is disposed at a distance in front of the rear case 420, and the motor unit is disposed at a distance in the rear of the rear case 420. The reducer 700 penetrates the rear case from the rear and is coupled to connect the motor unit 600 and the drum 200 to each other.

[0280] Therefore, the drum 200 and the motor unit 600 can transmit at least a part of the load to the rear case 420 via the reducer 700 .

[0281] As a result, the motor unit 600, the reducer 700, and the drum 200 tilt or vibrate simultaneously with respect to the rear case 420.

[0282] In addition, since the stator 610 is fixed to the reducer 700 , the drive shaft 630 tilts together with the reducer 700 or vibrates simultaneously with the reducer 700 .

[0283] FIG. 10 is a diagram showing the external appearance of the reducer 700. As shown in FIG.

[0284] The reducer 700 includes reducer housings 710 and 720 that form the exterior and house a gear box therein. The reducer housings include a first housing 710 facing the motor unit 600 and a second housing 720 facing the drum 200.

[0285] 10(a), most of the gear box in the reducer 700 is accommodated inside the first housing 710, and the second housing 720 shields the inside of the reducer 700. This allows the overall thickness of the reducer 700 to be reduced and the length of the drum 200 to be further extended.

[0286] The second housing 720 includes an insulating body 722 that shields the first housing 710, a connecting body 721 that extends around the insulating body 722 and is connected to the first housing 710, and a shaft support portion 723 that supports a rotating shaft 740 in the insulating body 722.

[0287] The blocking body 722 is disk-shaped, and the connecting body 721 extends from the blocking body 722 toward a part of the first housing 710 with a constant thickness.

[0288] Of course, the coupling body 721 may be provided on the first housing 710 to couple the blocking body 722 thereto.

[0289] The shaft support 723 prevents the rotation shaft 740 from shifting and maintains the alignment of the rotation shaft 740 and the drive shaft 630 .

[0290] The combined body 721 is provided with a fastening portion 780 having a certain thickness for fastening the reducer 700 to the stator 610 or the mounting portion 429 .

[0291] The fastening portion 780 protrudes outward from the combined body 721 and is formed integrally with the combined body 721. The fastening portion 780 includes either a fastening protrusion 781 to be coupled to the stator 610 or a coupling protrusion 782 to be coupled to the mounting portion 429. A plurality of fastening protrusions 781 are provided along the outer circumferential surface of the combined body 721 and are spaced apart at the same angle with respect to the shaft receiving portion 713.

[0292] 10(b), the first housing 710 is formed in multiple stages and accommodates gears of various diameters. In general, a gearbox coupled to the reducer 700 includes a sun gear, planetary gears that revolve around the sun gear, and a ring gear that accommodates the planetary gears and allows the planetary gears to rotate. The first housing 710 is coupled to the second housing 720 and includes a ring gear housing 711 that accommodates the ring gear, and a planetary gear housing 712 that extends from the ring gear housing 711 away from the second housing 720 and accommodates one end of the planetary gear.

[0293] The planetary gear housing 712 is formed to have a smaller diameter than the ring gear housing 711. However, the center of the planetary gear housing 712 and the center of the ring gear housing 711 are arranged coaxially (S) with each other.

[0294] A drive shaft 630 is coupled to the planetary gear housing 712, and is rotatably coupled to the rotor 620. The drive shaft 630 is inserted into the first housing 710 and is rotatably supported by a gear box within the first housing 710.

[0295] The cleaning part 640, which rotatably supports the rotor 620, is placed on one surface of the planetary gear housing 712, and a cleaning protrusion 7121 is provided to which the cleaning part 640 is coupled and fixed. The planetary gear housing 712 also has a cleaning coupling hole 7122 to which the cleaning part 640 is rotatably coupled.

[0296] The cleaning protrusions 7121 and the cleaning coupling holes 7122 are provided at a predetermined angle with respect to the driving shaft 630 .

[0297] The fastening protrusion 781 is formed thicker and has a larger cross-sectional area than the connecting protrusion 782. This strengthens the connecting force between the fastening protrusion 781 and the stator 610, making it easier to withstand vibrations transmitted from the stator 610.

[0298] The stator 610 is placed on the fastening protrusion 781 and is coupled to the fastening protrusion 781 by a separate fastening member. The fastening protrusion has a fastening protrusion hole 7811 formed therein to receive a fastening member that penetrates the stator 610, and the fastening protrusion hole 7811 has a screw thread formed therein to couple with the fastening member.

[0299] FIG. 11 is a diagram showing a structure in which the stator 610 is coupled to the reducer 700. As shown in FIG.

[0300] The stator 610 includes a ring-shaped main body 611 fixed to the reducer 600, a fixing rib 612 extending from the inner circumferential surface of the main body 611 and coupled to the fastening protrusion 781, teeth 614 extending from the outer circumferential surface around the main body 611 and around which a coil is wound, pole shoes 615 provided at the free ends of the teeth 614 to prevent the coil from coming off, and a terminal 616 for controlling the supply of current to the coil.

[0301] The main body 611 has an accommodating space 613 therein, and a plurality of fixing ribs 612 are provided within the main body 611 at a certain angle apart from the accommodating space 613, and the inside of the fixing rib 612 has a fixing rib hole 6121 in which a fixing member to be coupled with the fastening protrusion 781 is provided.

[0302] Since the stator 610 is directly coupled to the reducer 700 , the reducer 700 is at least partially housed in and coupled to the stator 610 .

[0303] In particular, when the reducer 700 is accommodated in the stator 610, the overall thickness of the driving part (M) is reduced, and the volume of the drum 200 can be further expanded. In addition, when the reducer 700 is accommodated in the stator 610, the rotating shaft 740 of the reducer 700 and the driving shaft 630 can be more precisely maintained coaxially.

[0304] For this, the reducer 700 is formed to have a smaller diameter than the main body 611. That is, the first housing 710 and the second housing 720 are formed to have a maximum diameter smaller than the diameter of the main body 611. As a result, the reducer 700 is disposed with at least a portion thereof housed in the main body 611. However, the fastening protrusion 781 extends to overlap the fixing rib 612 in the reducer housing. As a result, the fastening protrusion 781 is coupled to the fixing rib 612, and a portion of the first housing 710 and the second housing 720 can be positioned within the main body 611.

[0305] The fixing rib 612 includes a first fixing rib 612 a directly connected to the fastening protrusion 781 , and a second fixing rib 612 b that is not directly connected to the fastening protrusion 781 but supports the fastening protrusion 781 and the first housing 710 .

[0306] The coupling protrusion 782 is disposed offset from the fastening protrusion 781 to prevent interference with the fastening protrusion 781.

[0307] FIG. 12 is a diagram showing a structure in which the motor unit 600 is coupled to the reducer 700. As shown in FIG.

[0308] The stator 610 is coupled to the reducer 700. It may be coupled to one surface of the reducer 700 or to a fastening protrusion 781 protruding outward from a housing of the reducer 700, so that at least a portion of the reducer housing is accommodated inside the main body 611. This allows the center of the main body 611, the center of the reducer 700, and the rotation shaft 630 to always be coaxial.

[0309] Meanwhile, the rotor 620 accommodates the stator 610 with a certain distance between it and the pole shoe 615. The rotor 620 is fixed to the reducer 700 whose drive shaft 630 is accommodated in the main body 611, so that the gap (G1) between the rotor 620 and the stator 610 is always maintained.

[0310] Therefore, it is possible to prevent the rotor 620 and the stator 610 from colliding with each other, or to prevent the stator 610 from rotating in a temporarily distorted state, thereby preventing the generation of unnecessary noise and vibration.

[0311] On the other hand, a first imaginary diameter line (D1) passing through the center of the reducer 700 and the center of the drive shaft 630, a second imaginary diameter line (D2) passing through the center of the main body 611, and a third imaginary diameter line (D3) passing through the center of the rotor 620 are all positioned at the rotation center of the drive shaft 630.

[0312] As a result, the reducer 700 itself becomes the center of rotation of the drive shaft 630, and the stator 610 is directly fixed to the reducer 700, preventing the drive shaft 630 from becoming misaligned with the reducer 700. As a result, the reliability of the reducer 700 can be guaranteed.

[0313] FIG. 13 is a diagram showing a structure in which the reducer 700 is mounted on the rear case 420. As shown in FIG.

[0314] The motor section 600 is coupled and fixed to the reducer 700 , which is fixed to a mounting section 429 of the rear case 420 .

[0315] Of course, in the clothing treatment device according to the present invention, as long as the motor unit 600 can be connected and fixed to the reducer 700, the reducer 700 may be supported in any configuration.

[0316] The reducer 700 is directly coupled to and fixed on the mounting part 429, which is generally thin since it is processed by pressing the rear case 420. Therefore, if the reducer 700 is directly coupled to the mounting part 429, it is not easy for the mounting part 429 to fix the reducer 700. In particular, if the motor part 600 is also coupled to the reducer 700, the load of the motor part 600 is also transferred to the mounting part 429. Therefore, the mounting part 429 may bend due to the driving part (M), and durability cannot be guaranteed.

[0317] Therefore, the clothing treatment device according to the present invention further includes a bracket 800 that reinforces the rigidity of the mounting portion 429 and enhances the durability of the entire rear case 420. The bracket 800 is formed to be thicker than the rear case 420 and is made of a material having greater rigidity than the rear case 420.

[0318] The bracket 800 is coupled to the mounting portion 429 in surface contact therewith to reinforce the rigidity of the mounting portion 429 , and is coupled to the reducer 700 to fix the reducer 700 to the mounting portion 429 .

[0319] The reducer 700 may be coupled to the bracket 800 while being coupled to the mounting portion 429 , or may be coupled only to the bracket 800 and fixed to the mounting portion 429 .

[0320] The bracket 800 is coupled to the mounting portion 429, and includes a main bracket 810 which is also coupled to the reducer housing. The main bracket 810 is fixed to the mounting surface 4292 and supports the reducer 700.

[0321] The main bracket 810 includes a plurality of installation ribs 814 that are directly connected to the reducer 700, and the installation ribs 814 include installation rib holes 8143 to receive a fixing member that is fastened to the reducer 700.

[0322] The main bracket 810 includes a fixing protrusion 8111 formed to engage with a fastening portion 4293 provided on the mounting surface 4292. The fastening portion 4293 is recessed from the mounting surface 4292, and the fixing protrusion 8111 is inserted into the fastening portion 4293 to prevent the main bracket 810 from rotating on the mounting portion 4292 or changing its installation position due to vibration, etc.

[0323] The reducer 700 is coupled to the main bracket 810 and is spaced apart from the mounting portion 429, so that noise and vibrations caused by collision between the mounting portion 429 and the reducer 700 can be blocked.

[0324] However, since the gear box inside the reducer 700 rotates when power is received from the motor unit 600, considerable vibration occurs. Vibrations are also transmitted to the reducer 700 from the drum 200. Therefore, it is necessary to improve the connection strength between the main bracket 810 and the reducer 700.

[0325] For this, the bracket 800 further includes an auxiliary bracket 820 which is coupled to both the main bracket 810 and the reducer 700 to fix the reducer 700 to the main bracket 810 .

[0326] The main bracket 810 and the auxiliary bracket 820 are coupled to surround the reducer 700. The main bracket 810 is coupled to one side of the reducer 700, and the auxiliary bracket 820 is coupled to the other side of the reducer 700 to fix both sides of the reducer 700.

[0327] For example, the main bracket 810 is coupled to one side of the coupling protrusion 782 , and the auxiliary bracket 820 is coupled to the other side of the coupling protrusion 782 to fix the reducer 700 .

[0328] The auxiliary bracket 820 may be coupled to the mounting portion 429, or may be coupled to and fixed to the main bracket 810. Since the main bracket 810 has greater rigidity than the mounting portion 429, the auxiliary bracket 820 is more stable when coupled to the main bracket 810.

[0329] FIG. 14 is a diagram showing an embodiment of a structure in which the bracket 800 and the reducer 700 are joined together.

[0330] Referring to FIG. 14( a ), the coupling protrusions 782 are smaller than the fastening protrusions 781 in any of area, size, and thickness, but may be formed in greater numbers than the fastening protrusions 781 .

[0331] The coupling protrusions 782 are arranged offset from the fastening protrusions 781. The coupling protrusions 782 may be arranged parallel to the fastening protrusions 781 or may be arranged at different heights.

[0332] The coupling protrusion 782 is formed in a plate shape so as to be supported by the bracket 800 or to be in surface contact with the bracket 800, and is provided with a coupling protrusion hole 7821 to which a fastening member for fastening to the bracket 800 is coupled.

[0333] 14(b), the main bracket 810 includes a main body 811 formed in a ring shape and placed on the mounting surface 4292. The main body 811 has a diameter corresponding to the mounting surface 4292 so as to be in surface contact with the mounting surface 4292.

[0334] A plurality of fixing protrusions 8111 are provided around the main body 811, and the fixing protrusions 8111 are arranged at equal angular intervals based on the center of the main body 811. The fixing protrusions 8111 may be supported by a fastening portion 4293 provided on the mounting surface 4292.

[0335] Meanwhile, the main body 811 is fixed to the mounting surface 4292 by a fastening member. At this time, fastening holes to which the fastening members are coupled are formed penetrating the main body 811.

[0336] However, since the fixing protrusions 8111 are formed by being bent or recessed into the main body 811, they have a higher ability to absorb shock and vibration than the main body 811. Therefore, fastening holes are formed in the fixing protrusions 8111, and fastening members are coupled to the mounting surface 4292 by penetrating the fixing protrusions 8111.

[0337] A disk-shaped sheet body 912 is provided on the inner circumferential surface of the main body 811. The sheet body 912 is formed to have a diameter smaller than the diameter of the mounting surface 4242, and is an area that does not contact the mounting surface 4242.

[0338] While the main body 811 is intended to be coupled and fixed to the mounting portion 429 , the seat body 912 extends from the inner circumferential surface of the main body 811 and is intended to support the load of the reducer 700 .

[0339] The seat body 912 is bent and extends from the inner peripheral surface of the main body 811 to strengthen the rigidity of the main bracket 810 and to effectively support the load of the reducer 700 .

[0340] The reducer 700 may be directly coupled to the seat body 912. That is, the coupling protrusion 782 of the reducer may be coupled to the seat body 912.

[0341] However, when the diameter of the seat body 912 is relatively large, the seat body 912 is provided on its inner peripheral surface with a mounting rib 814 that protrudes inward.

[0342] The installation rib 814 is formed to have a larger area than the connecting protrusions 782, and is formed to have a width corresponding to the circumferential direction that is larger than the length of the installation rib protruding from the seat body 912. This enables the installation rib 814 to stably support the load of the reducer 700. The installation ribs 814 are provided in a number corresponding to the connecting protrusions 782, and are provided with installation rib holes 81413 corresponding to the connecting protrusion holes 7821.

[0343] The mounting rib 814 may extend parallel to the seat body 912, or may extend so as to protrude in the axial direction from one surface of the seat body 912. The mounting rib 814 protrudes from the seat body 912 in a direction toward the reducer 700.

[0344] This can prevent the reducer 700 from excessively protruding outside the bracket 800. In addition, when the main bracket 810 is fastened to the auxiliary bracket 820, the combined body 782 placed on the installation rib 814 can be guided to be further in close contact with or accommodated in the auxiliary bracket 820.

[0345] 14(c), the auxiliary bracket 820 includes an auxiliary body 821 formed in a ring shape and placed on the base 812, and a shielding body 822 extending inward from the auxiliary body 821.

[0346] The auxiliary body 821 is placed on the base 812 without contacting the main body 811. For this reason, the auxiliary body 821 is formed with a diameter corresponding to the base 812. As a result, even when the main bracket 810 and the auxiliary bracket 820 are coupled via the mounting portion 429, the auxiliary bracket 820 can be prevented from interfering with the mounting portion 429.

[0347] The auxiliary body 821 is supported in direct contact with the base 812 and is coupled to the base 812 by a separate fastening member. That is, the base 812 has a base hole 8121 through which the fastening member passes and the auxiliary body 821 has an auxiliary body hole 8211 at a position corresponding to the base hole 8121.

[0348] The shielding body 822 shields the installation rib 814. That is, the shielding body 822 extends to a thickness that completely shields the installation rib 814 inside the base 812. The shielding body 822 shields the coupling body 782 of the reducer placed on the installation rib 814, and is configured to shield one side of the coupling body 782 at the same time.

[0349] The shielding body 822 is formed to be in close contact with the installation rib 814 and the connecting body 782 when the auxiliary body 821 is connected to the base 812. That is, the connecting body 782 is disposed between the shielding body 822 and the installation rib 814, and the connecting body 782 is fixed to and supported by the shielding body 822 and the installation rib 814.

[0350] Meanwhile, the shielding body 822 includes a rib receiving groove 8221 formed to have an area corresponding to the installation rib 814 and recessed to receive the installation rib 814 .

[0351] The rib receiving grooves 8211 are provided in a number corresponding to the number of the mounting ribs 814, and are provided at positions corresponding to the mounting ribs 814. The rib receiving grooves 8211 are provided to receive all of the mounting ribs 814, or to press one side of the mounting ribs 814.

[0352] When the auxiliary bracket 820 is coupled to the main bracket 810, the installation rib 814 and the coupling protrusion 782 are inserted into the rib receiving groove 8211 and fixed.

[0353] The coupling protrusion 782 is fixed by being pressed against or in close contact with the installation rib 814 and the rib receiving groove 8211 .

[0354] This prevents the auxiliary bracket 820 from shifting from the main bracket 810, and the coupling protrusion 782 is also fixed to the rib receiving groove 8211 and the installation rib 814, so that the reducer 700 is stably fixed.

[0355] The shielding body 822 is prevented from overlapping with the fastening protrusion 781 and further includes a deceleration avoidance hole 8222 that exposes the fastening protrusion 781. The fastening protrusion 781 is exposed from the deceleration avoidance hole 8222, so that the stator 610 is stably coupled to the fastening protrusion 781.

[0356] In addition, the shielding body 822 further includes a wire avoidance groove 8223 through which the wire connected to the terminal 816 can pass.

[0357] Meanwhile, the shielding body 822 is provided to shield a part of the surface of the first housing 710 of the reducer 700. This can prevent the reducer 700 from falling out of the bracket 800 even when subjected to vibration or impact.

[0358] The auxiliary bracket 820 further includes a support hole 824 into which the cleaning protrusion 7121 protruding from the first housing 710 of the reducer 700 is inserted, and is provided with a protrusion fastening hole 825 into which the through protrusion 8141 protruding from the installation rib 814 and inserted into the auxiliary bracket 820 is inserted.

[0359] FIG. 15 is a diagram showing a manner in which the bracket 800 is coupled to the reducer 700. As shown in FIG.

[0360] 15(a), the main bracket 810 is first coupled to the reducer 700 to fix the reducer 700. The coupling protrusion 782 extending from the reducer housing is placed on the installation rib 814 of the main bracket 810. The coupling protrusion 782 and the installation rib 814 are coupled to each other by a fastening member.

[0361] At this time, the fastening protrusions 781 are disposed to avoid the installation ribs 814 or are exposed to the inside of the main bracket 810 .

[0362] Referring to FIG. 15( b ), when the reducer 700 is placed on the main bracket 810 , the auxiliary bracket 820 is coupled to the main bracket 810 .

[0363] The auxiliary body 821 is coupled to the base 812 , and the shielding body 822 shields the reducer 700 and the internal space of the base 812 .

[0364] In the shielding body 822, the rib receiving groove 824 receives the mounting rib 814 on which the connecting rib 782 is placed. The connecting rib 782 is disposed and supported between the rib receiving groove 824 and the mounting rib 814. As a result, the connecting rib 782 can be prevented from being arbitrarily separated from the mounting rib 814.

[0365] The shielding body 822 is formed such that the fastening protrusion 781 is exposed to the outside through the decelerator avoidance groove 8222. Therefore, even if the bracket 800 fixes the reducer 700, the motor unit 600 and the reducer 700 are not hindered from being combined.

[0366] The reducer 700 is sufficiently fixed by being coupled to the main bracket 810. The auxiliary bracket 820 strengthens the coupling force between the main bracket 810 and the reducer 700, and prevents the reducer 700 from being accidentally separated from the main bracket 810.

[0367] The reducer 700 is fixed to the main bracket 810 and the auxiliary bracket 820, and is stably fixed to the mounting portion 429 without any separate structure for fixing the reducer 700 to the mounting portion 429.

[0368] Also, the reducer 700 may not be directly connected to the mounting part 429, but may be fixed to and supported by the bracket 800 and then connected to the mounting part 429. This allows the reducer 700 to be stably fixed to the mounting part 429 even in a state where it is connected to the motor part 600.

[0369] FIG. 16 is a view showing a state in which the bracket 800 is joined to the rear case 420. As shown in FIG.

[0370] With reference to FIG. 16( a ), the main bracket 810 is coupled to an attachment portion 429 in front of the rear case 420 .

[0371] When the drum 200 rotates with clothes stored therein, the drum 200 can exert a pushing force toward the reducer 700. In particular, the drum 200 is designed to be pressed or prevented from moving toward the front case 410 so that the door is not opened by the clothes.

[0372] At this time, to prevent the reducer 700 from coming off rearward of the rear case 420, the main body 811 is coupled to one side of the mounting surface 4292 that does not face the motor unit 600. Therefore, the main bracket 810 can fix the reducer 700 so that the reducer is not pushed toward the motor unit 600 and moved.

[0373] The main bracket 810 is coupled to the front of the mounting portion 429, facing the drum back surface 220. The mounting portion 429 protrudes from the rear case 420 toward the drum 200. Therefore, in the main bracket 810, the main body 811 is coupled to and fixed to one surface of a mounting surface 4292 of the mounting portion 429 protruding toward the drum 200.

[0374] The fixing protrusion 8111 protruding from the main body 811 is accommodated in a fastening portion 4293 formed on the mounting surface 4292. Of course, the fastening portion 4293 may be accommodated on the opposite side of the fixing protrusion 8111. Since the fixing protrusion 8111 is formed by being pressed from the main body 811, the opposite side becomes an accommodating groove.

[0375] Therefore, the fastening portion 4293 may protrude from the mounting surface 4292 toward the drum 200 and may protrude away from the drum 200. The fixing protrusion 8111 is formed to protrude in the same direction as the fastening portion 4293 so as to be placed on the fastening portion 4293.

[0376] Since the main body 811 is joined to the mounting surface 4292 in surface contact, an effect of increasing the thickness of the mounting surface 4292 is obtained. In addition, since the main body 811 prevents the mounting surface 4292 from bending, an effect of strengthening the rigidity of the mounting surface 4292 is obtained.

[0377] When the auxiliary bracket 820 is attached to the main bracket 810 , the shielding body 822 of the auxiliary bracket 820 is exposed to the front of the rear case 420 .

[0378] 16(b), auxiliary bracket 820 is coupled to an area exposed to mounting portion 429 of main bracket 420 at the rear of rear case 420 to fix reducer 700. Since main body 811 is coupled to mounting surface 4292 of main bracket 420, only base 812 is exposed to mounting portion 429.

[0379] Thus, the auxiliary bracket 820 is coupled to the base 812 to fix the reducer 700 in place.

[0380] As a result, the main bracket 810 is coupled to the front of the rear case 420 , and the auxiliary bracket 820 is coupled to the main bracket 810 behind the rear case 420 .

[0381] As a result, the auxiliary bracket 820 is formed with a smaller diameter than the mounting surface 4292 to centrally assist the reduction gear 700 in being coupled to the main bracket 810 .

[0382] FIG. 17 is a diagram showing a structure in which the reducer 700 is coupled to and supported by the rear case 420. As shown in FIG.

[0383] The main body 811 of the main bracket 810 is connected to the front surface of the mounting surface 4292, and the base 812 forms a step in the main body 811 or a groove is formed in which the portion extending from the main body 811 is bent a certain amount, thereby strengthening the overall rigidity of the main bracket 810.

[0384] The installation rib 814 includes an extension surface 8141 that extends from the base 812 at an angle toward the rear of the rear case 420 , and a support surface 8142 that extends from the extension surface 8141 in a direction parallel to the rear plate 411 and supports the joining rib 782 .

[0385] The support surface 8142 includes fastening holes 8413 to which fasteners are coupled.

[0386] The mounting rib 814 further includes a through projection 8144 extending from the support surface 8142 toward the auxiliary bracket 820 .

[0387] The reducer 700 is coupled by placing the coupling protrusion 782 extending from the reducer housing 710 on the support surface 8142 .

[0388] The auxiliary bracket 800 has an auxiliary body 821 connected to the base 812, and the shielding body 822 includes an inclined surface 824 recessed from the installation rib along the inclination of the extension surface 8141. The inclined surface 824 extends obliquely to a rib receiving groove 8221 that receives the installation rib 814.

[0389] The shielding body 822 has a protrusion fastening hole 825 into which the through-protrusion 8144 is inserted and fixed. The through-protrusion 8144 passes through and is supported in the protrusion fastening hole 825. The through-protrusion 8144 and the protrusion fastening hole 825 can easily determine the position where the auxiliary bracket 820 and the main bracket 810 are coupled. The through-protrusion 8144 may pass through the coupling body 782.

[0390] The mounting portion 429 includes a mounting groove 4294 that recesses forward from the drum accommodating groove 423 , and the mounting surface 4292 extends from the inside of the mounting groove 4294 .

[0391] At this time, since the main bracket 810 and the auxiliary bracket 820 are fixed to the mounting surface 4292 , at least a portion of the first housing 710 of the reducer is accommodated and disposed in the mounting groove 4294 .

[0392] For example, the gear box 730 housed in the first housing 710 and the second housing 720 is disposed inside the mounting groove 4294 .

[0393] As a result, the volume occupied by the rear case 420 and the reduction gear 700 can be minimized.

[0394] FIG. 18 is a diagram showing an embodiment of a drive unit (M) of a clothing processing device according to the present invention.

[0395] A bracket 800 is connected to the rear case 420, and the reducer 700 is connected to and supported by the bracket 800. The motor unit 600 is disposed behind the reducer 700 and the rear case 420, and the drum rear surface 220 is disposed in front of the rear case 420 and the reducer 700.

[0396] The stator 610 of the motor section 600 is disposed apart from the rear case 420, and the terminals 616 that supply current to the stator 610 are disposed near the rear case 420 or may be in contact with the rear case 420 but are not connected or fixed to the rear case 420.

[0397] The rotor 620 includes a permanent magnet 623 facing the stator 610, an installation body 622 coupled to the permanent magnet 623 and spaced apart from the outer circumferential surface of the stator 610, and a rotor body 621 extending from the installation body 622 and rotating opposite the stator 610. The rotor body 621 is formed in a disk shape having a diameter larger than that of the stator 610, and the installation body 622 is provided so that the outer circumferential surface of the rotor body 621 accommodates the outer circumferential surface of the stator 610. A drive shaft 630 is coupled to the center of the rotor body 621, and a plurality of inlet holes are formed penetrating between the drive shaft 630 and the installation body 622 to inject air into the stator 610.

[0398] The drive shaft 630 is connected to a stud 631 connected to the center of the rotor body 621 and extends into the reducer 700 .

[0399] A cleaning part 640 that rotatably supports the inner surface of the rotor body 621 is connected to the driving shaft 630. The cleaning part 640 includes a combined cleaning part 642 that is connected to the driving shaft 630, and a supporting cleaning part 641 that supports the rotor body 620 at the combined cleaning part 642.

[0400] The cleaning portion 640 can prevent the rotor 620 and the drive shaft 630 from distorting during rotation.

[0401] Of course, the cleaning unit 640 may be coupled to the reducer 700 instead of to the rotor 620 to rotatably support the rotor 620 .

[0402] The first housing 710 of the reducer 700 faces the rotor body 620 , and the second housing 720 is coupled to the first housing 710 and faces the drum rear surface 220 .

[0403] A gear box 730 is provided inside the first housing 710 and the second housing 720. The gear box 730 includes a sun gear 731 provided on or coupled to a free end of the drive shaft 630, at least one planetary gear 732 that rotates in mesh with the sun gear 731, a ring gear 733 that is coupled to the outer periphery of the planetary gear 732 to guide the rotation of the planetary gear 732, and a carrier 734 that rotatably supports the plurality of planetary gears 732.

[0404] The planetary gears 732 are arranged along the periphery of the sun gear 731, and each planetary gear 732 includes a first planetary body 7321 that rotates in mesh with the sun gear 731 and the ring gear 733, a second planetary body 7322 formed with a smaller diameter than the first planetary body 7321, and a gear shaft 7323 that rotatably supports the first planetary body 7321 and the second planetary body 7322 on the carrier 734.

[0405] When the sun gear 731 rotates, the planetary gear 732 rotates, causing the gear shaft 7323 to rotate, thereby causing the carrier 734 to rotate.

[0406] The carrier 734 includes a first carrier 7341 coupled to one end of the gear shaft 7323 and a second carrier 7342 coupled to the other end of the gear shaft 7323 .

[0407] The first carrier 7341 and the second carrier 7342 are formed in a ring or disk shape.

[0408] Meanwhile, a rotation shaft 740 extends from the center of rotation of the second carrier 7342. The rotation shaft 740 is provided integrally with the second carrier 7342 or is coupled to the second carrier 7342 and extends therefrom.

[0409] The first housing 710 includes a ring gear housing 711 that fixes the outer peripheral surface of the first planetary body 732 or the outer peripheral surface of the ring gear 733, a planetary gear housing 712 that extends from the ring gear housing 711 to rotatably accommodate the second planetary body 732 and the first carrier 7341, and a shaft accommodating portion 713 that extends from the planetary gear housing 712 and rotatably supports the drive shaft 630.

[0410] The ring gear housing 711 forms a side surface of the first housing 710, and the planetary gear housing 712 forms a part of the side surface of the first housing 710 and one surface facing the rotor 620. The shaft receiving portion 713 is formed in a pipe shape extending inside the planetary gear housing 712. The shaft receiving portion 713 is disposed in a space where the second planetary body 732 is formed to have a smaller diameter than the first planetary body 731. A drive bearing 770 that rotatably supports the drive shaft 630 is provided on the inner peripheral surface of the shaft receiving portion 713. A plurality of drive bearings 770 are provided spaced apart along the length of the drive shaft 630.

[0411] As a result, the driving bearing 770 and the shaft receiving part 713 do not protrude outside the reducer 700 but are disposed inside the reducer 700, thereby reducing the space in which the driving shaft 630 is disposed. That is, the volume of the reducer 700 itself is reduced, and the space between the reducer 700 and the motor part 600 can also be reduced.

[0412] Therefore, the overall thickness of the driving part (M) can be reduced, and the stator 610 can be coupled closer to the reducer 700 to prevent the driving shaft 630 from being distorted.

[0413] In addition, by disposing the driving bearing 770 and the shaft receiving portion 713 inside the reducer 700, the driving shaft 630 approaches the reducer 700 and the reducer 700 is disposed inside the stator 610. As a result, at least a portion of the reducer 700 can be disposed by utilizing the space of the motor unit 600.

[0414] As a result, the length of the drum 200 disposed between the rear case 420 and the front case 410 can be further extended, and the volume of the drum 200 can be increased.

[0415] Meanwhile, the second housing 720 includes a combined body 721 combined with the ring gear housing 711, a blocking body 722 that blocks the gear box 730 in the combined body 721, and a shaft support part 723 that extends from the blocking body 722 and rotatably supports the rotating shaft 740. The shaft support part 723 is formed in a pipe shape extending from the blocking body 722, and a shaft bearing 760 that rotatably supports the rotating shaft 740 is provided inside the shaft support part 723.

[0416] A plurality of shaft bearings 760 are provided at regular intervals along the length of the rotating shaft 740 .

[0417] The free end of the rotating shaft 740 is inserted into and coupled with the drum rear surface 220. At this time, the rotating shaft 740 and the drum rear surface 220 are arranged as close as possible. One of the shaft bearings 760 may be arranged in front of the drum rear surface 220.

[0418] When the drive shaft 630 is rotated by the rotor 620, the sun gear 731 rotates and the planetary gear 732 rotates in mesh with it. The first planetary body 7321 rotates in mesh with the ring gear 733, but since the ring gear 733 is fixed, the first planetary body 7321 rotates around the sun gear 731 due to a reaction.

[0419] The planetary gear 732 rotates the gear shaft 7323, which in turn rotates the carrier 734. When the carrier 734 rotates, the rotation shaft 740 extending from the second carrier 734 rotates.

[0420] At this time, the planetary gear 732 meshes with the sun gear 731, so even if it meshes with the sun gear 731 and rotates in the opposite direction, as the planetary gear 732 rotates with the ring gear 733, the carrier 734 rotates in the same direction as the sun gear 731 due to a reaction, and ultimately the rotating shaft 740 rotates in the same direction as the sun gear 731.

[0421] Meanwhile, since the diameter of the outer circumferential surface of the planetary gear 732 and the diameter of the carrier 734 are larger than the diameter of the sun gear 731, the rotating shaft 740 rotates at a lower rpm than the sun gear 731. Therefore, the rotating shaft 740 rotates at a lower rpm than the driving shaft 630. However, since no energy is wasted except for friction loss, the power transmitted to the driving shaft 630 is transmitted to the rotating shaft 740. Therefore, as the rotation speed of the rotating shaft 740 decreases, the torque, which is a rotational force, is amplified.

[0422] Since the reducer 700 converts the power corresponding to low torque and high rpm generated by the motor unit 600 into power corresponding to high torque and low rpm, it can be said that the reducer 700 converts the power of the motor unit 600 and transmits it to the drum 200.

[0423] Meanwhile, the axial direction a of the driving shaft 630 and the axial direction b of the rotating shaft 740 are coaxial with each other. At this time, the driving shaft 630 is supported within the reducer 700, and the stator 610 is also fixedly coupled to the reducer 700, so that the direction a between the driving shaft 630 and the reducer 700 is almost always maintained.

[0424] At this time, the gear box 730 is fixed in the reducer 700 in a gear coupling manner, and the rotating shaft 740 is also fixed in the gear box 730 by the reducer housing 720 and the bearing 770, so that the direction b in which the rotating shaft 740 extends from the reducer 700 is always maintained.

[0425] Therefore, the a direction and the b direction form a coaxial line, and the rotating shaft 740 and the driving shaft 630 can maintain a coaxial line in most cases.

[0426] The rotating shaft 740 and the drive shaft 630 tilt together with the reducer housing or vibrate together with the reducer housing.

[0427] The present invention can be modified and embodied in various forms, and the scope of the invention is not limited to the above-described embodiments. Therefore, if the modified embodiments include the elements of the claims of the present invention, they can be said to belong to the scope of the present invention.

Claims

1. a drum having an inlet through which garments are inserted and configured to receive the garments through the inlet; a motor section configured to rotate the drum; A reducer is provided between the motor unit and the drum and configured to convert a rotation speed and a torque of the motor unit, The reducer includes a fastening portion at which the motor portion is fastened to an outer surface of the reducer to be fixed, A clothing processing device, wherein the motor portion is coupled to the fastening portion so as to be fixed to the reduction gear.

2. The motor unit includes: a stator configured to generate a rotating magnetic field; a rotor configured to rotate by the rotating magnetic field; a drive shaft coupled to the rotor and inserted into the reducer; The clothing processing device according to claim 1 , wherein the stator is coupled to the fastening portion so that the position of the drive shaft disposed in the reduction gear is fixed.

3. The clothing processing device according to claim 2 , wherein the stator is coupled to and fixed at the fastening portion, and the position of the drive shaft disposed in the reducer is fixed to maintain a distance between the stator and the rotor.

4. The reducer includes: a reduction gear housing that accommodates the drive shaft therein and supports the drive shaft so as to be freely rotatable; a gearbox disposed within the reducer housing and configured to mesh with the drive shaft to change the rotational speed of the drive shaft; a rotating shaft extending from the gear box and coupled to the drum, The fastening portion is provided on the reducer housing, The clothing treatment device of claim 2 , wherein the stator is coupled to the fastening portion so as to be fixed to the reducer housing.

5. The clothing processing device according to claim 4 , wherein the reducer housing supports the rotating shaft and maintains an alignment between the rotating shaft and the drive shaft.

6. The clothing processing device according to claim 5 , wherein the reducer housing includes a shaft support portion extending in a longitudinal direction of the rotation shaft and supporting the rotation shaft so as to freely rotate, in order to prevent the rotation shaft from shifting.

7. The motor unit includes: a stator coupled to the fastener and configured to generate a rotating magnetic field; a rotor configured to rotate by the rotating magnetic field; a drive shaft coupled to the rotor and inserted into the reducer; The clothing treatment device of claim 1 , wherein the stator and the drive shaft are configured to tilt together with the reducer or to vibrate together with the reducer.

8. The reducer includes: a reducer housing that accommodates and rotatably supports the drive shaft; a gearbox disposed within the reducer housing and configured to mesh with the drive shaft to change the rotational speed of the drive shaft; a rotating shaft extending from the gear box and coupled to the drum, The fastening portion is provided on the reducer housing, The clothing processing device of claim 7 , wherein the rotating shaft and the drive shaft are configured to tilt together with the reducer housing or to vibrate together with the reducer housing.

9. The motor unit includes: a stator coupled to the fastener and configured to generate a rotating magnetic field; a rotor configured to rotate by the rotating magnetic field; a drive shaft coupled to the rotor and inserted into the reducer; The clothing processing device according to claim 1 , wherein the stator is coupled to the reducer while housing at least a portion of the reducer therein.

10. The clothing treatment device of claim 9 , wherein at least a portion of the drive shaft is disposed within the stator.

11. The clothing treatment device of claim 9 , wherein a portion of the reducer is disposed within the rotor.

12. The clothing processing device of claim 9 , wherein the fastening portion includes one or more fastening protrusions coupled to an inner circumferential surface of the stator.

13. a drum having an inlet through which garments are inserted and configured to receive the garments through the inlet; a motor section configured to rotate the drum; A reducer that connects the motor unit and the drum and is configured to convert a rotation speed and a torque of the motor unit; a rear case disposed between the drum and the motor unit and supporting the reducer; The reduction gear is coupled to and fixed to the rear case, A clothing processing device, wherein the motor unit is coupled to the reduction gear and positioned away from the rear case.

14. The clothing processing device according to claim 13 , wherein the drum and the motor unit are configured to transmit at least a portion of a load to the rear case via the reduction gear.

15. The clothing processing device according to claim 14 , wherein the motor unit, the reducer and the drum are configured to tilt or vibrate simultaneously with respect to the rear case.

16. The clothing processing device according to claim 14, wherein the drum and the motor unit are positioned away from the rear case.

17. The reducer further includes a rotating shaft coupled to the drum, The device of claim 13, wherein the drums are configured to oscillate or tilt separately about the axis of rotation.

18. The clothing treatment device of claim 17, wherein the drum is made of a material that provides elasticity.

19. The clothing treatment device of claim 17, further comprising a hot air supplier disposed outside the drum and configured to supply hot air into the drum.

20. The clothing treatment device of claim 13, further comprising a hot air supplier disposed outside the drum and configured to supply hot air into the drum.

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