KR20220114153A - Laundry Treatment Apparatus - Google Patents

Abstract

The present application relates to a laundry treatment device. The laundry treatment device comprises: a drum provided with a drum body that provides a space for storing objects (clothes, etc.) to be dried, a front cover that forms a front surface of the drum body, a rear cover that forms a rear surface of the drum body, and a drum inlet that passes through the front cover and communicates with the inside of the drum body; a drying unit for supplying heated air to the drum; a fixed panel provided at a position spaced apart from the rear cover; a housing fixed to the fixed panel and provided with a housing body that is provided with an accommodation space formed therein and an open hole communicating the accommodation space to the outside and a housing cover that is coupled to the housing body to close the open hole; an input shaft having one end positioned outside the housing and the other end positioned inside the accommodation space through the housing body; an output shaft having one end fixed to the rear cover and the other end positioned inside the accommodation space through the housing cover; a ring gear fixed to the housing body and positioned inside the accommodation space; a main gear fixed to the input shaft and positioned inside the accommodation space; a cage positioned inside the accommodation space and fixed to the other end of the output shaft; a driven gear rotatably fixed to the cage, connecting the main gear and the ring gear, and positioned inside the accommodation space; and a motor provided with a stator that is fixed to the fixed panel or the housing to form a rotating magnetic field and a rotor that is fixed to one end of the input shaft and rotating by the rotating magnetic field. Accordingly, the present application can provide a laundry treatment device capable of minimizing the degradation of the durability of a power transmission unit.

Description

Laundry Treatment Apparatus

This application relates to a laundry treatment apparatus.

The laundry treatment apparatus is a generic term for a washing machine for washing clothes (objects to be washed or objects to be dried), a dryer for drying clothes, and devices capable of both washing and drying clothes.

The washing machine is provided to include a tub for storing water, a washing drum provided inside the tub to store clothes, and a driving unit (washing driving unit) that rotates the washing drum, and the dryer includes a drying drum for storing clothes, the drying drum In general, it is provided to include a driving unit (drying driving unit) for rotating the dryer, and a heat exchanging unit for supplying air to the drying drum to remove moisture from clothes.

The washing driving unit is provided to include a stator fixed to the tub to form a rotating magnetic field, a rotor rotating by the rotating magnetic field, and a rotating shaft passing through the tub to connect the washing drum and the rotor, whereas the drying driving unit is provided with a motor and a rotating shaft of the motor. It was generally provided to include a fixed pulley and a belt (power transmission unit) for connecting the rotational motion of the pulley to the drying drum.

The washing driving unit is provided such that the rotating shaft of the motor connects the washing drum and the rotor. In order to wash or spin clothes, it is necessary for the washing driving unit to control the rotational speed of the washing drum to be high or to change the rotational direction of the washing drum. And there is an effect that the rotation direction can be easily controlled.

On the other hand, the conventional drying drive unit generally has a structure in which a power transmission unit such as a belt connects the drying drum and the rotating shaft of the motor. This is because the dryer may rotate the drying drum through a power transmission unit such as a belt because the need to maintain a high rotational speed of the drying drum or change the rotation direction of the drying drum is low. However, if the number of rotations and the direction of rotation of the drying drum can be changed, the movement of clothes inside the drying drum can be controlled, so that the drying time can also be shortened and the drying performance of the dryer can be expected to be improved.

Among the conventional dryers, there are some provided with a drying driving unit that connects a rotor and a drying drum to a reducer (Publication No. 10-2020-0065931). The drying drive unit is provided so that the input shaft connected to the rotor and the output shaft connected to the drying drum form a coaxial axis, so shortening of drying time or improvement of drying performance can be expected, but the heat supplied to the drying drum is transferred to the inside of the drying driving unit There was a possibility that the durability of the dry drive unit would be lowered.

An object of the present application is to provide a laundry treatment apparatus having a power transmission unit that connects an input shaft connected to a rotor and an output shaft connected to a drum, and the input shaft and the output shaft form a coaxial shaft.

Another object of the present application is to provide a laundry treatment apparatus capable of minimizing deterioration in durability of the power transmission unit by minimizing the transfer of external heat to the inside of the power transmission unit.

The present application relates to a drum body providing a space for storing objects to be dried (clothes, etc.), a front cover forming a front surface of the drum body, a rear cover forming a rear surface of the drum body, and passing through the front cover a drum provided with a drum inlet communicating with the inside of the drum body; a drying unit supplying heated air to the drum; a fixed panel provided at a position spaced apart from the rear cover; a housing fixed to the fixing panel and provided with a housing body having an accommodating space formed therein and an opening hole for communicating the accommodating space to the outside, and a housing cover coupled to the housing body to close the opening hole; an input shaft penetrating through the housing body and having one end positioned outside the housing and the other end positioned inside the accommodation space; an output shaft penetrating through the housing cover and having one end fixed to the rear cover and the other end positioned inside the accommodating space; a ring gear fixed to the housing body and positioned inside the accommodation space; a main gear fixed to the input shaft and positioned inside the accommodation space; a cage positioned inside the receiving space and having the other end of the output shaft fixed; a driven gear rotatably fixed to the cage, connecting the main gear and the ring gear, and positioned inside the accommodation space; and a motor having a stator fixed to the fixed panel or the housing to form a rotating field, and a rotor having one end of the input shaft fixed and rotating by the rotating magnetic field; do.

The housing body is provided to include a housing base, an input shaft through hole provided to penetrate the housing base into which the input shaft is inserted, and a housing circumferential surface extending from an edge of the housing base toward the fixing panel, and the receiving space may be formed by the housing base and the housing circumferential surface.

The ring gear, the main gear, and the driven gear may be provided so as not to deviate from the space provided by the accommodation space.

The housing body may further include a cover fixing plate provided on the housing circumferential surface to which the housing cover is fixed.

The stator may include a ring-shaped core; a plurality of support bars projecting radially from the outer circumferential surface of the core; a ring-shaped core insulating part provided to surround the core; a plurality of support bar insulation portions provided in the core insulation portion to surround each of the support bars; a coil provided in the insulating part of the support bar; and a stator bracket provided on an inner circumferential surface of the core insulating part and coupled to the mounting part, wherein the housing cover further includes a mounting part to which the stator bracket is detachably fixed. It may further include a fixing plate through hole passing through.

The laundry treatment apparatus may include an input shaft support portion extending from the housing base toward the rotor and provided to surround the input shaft through-hole; and an input shaft bearing provided inside the input shaft support part to rotatably fix the input shaft to the input shaft support part.

The input shaft bearing may include a first input shaft bearing and a second input shaft bearing positioned inside the input shaft support part.

The clothes treatment apparatus may include an output shaft through hole provided in the housing cover and into which the output shaft is inserted; an output shaft support portion extending from the housing cover toward the fixing panel and provided to surround the output shaft through-hole; an output shaft bearing coupling the output shaft to the output shaft support; and a sealer provided in the output shaft support portion to block the inflow of external air into the output shaft bearing.

The output shaft bearing may be provided to include a first output shaft bearing and a second output shaft bearing positioned inside the output shaft support part.

The housing may be located in a space separated from a space in which the drum is located.

The laundry treatment apparatus may include a heat insulating part fixed to the housing cover and provided with a material having a lower thermal conductivity than that of the housing cover.

The housing body and the housing cover may be made of a metal material, and the heat insulating part may be made of a non-metal material.

The present application provides a laundry treatment apparatus including a power transmission unit that connects an input shaft connected to a rotor and an output shaft connected to a drum, and the input shaft and the output shaft form a coaxial shaft.

In addition, the present application provides a laundry treatment apparatus capable of minimizing deterioration in durability of the power transmission unit by minimizing the transfer of external heat to the inside of the power transmission unit.

1 and 2 show an example of a laundry treatment apparatus.
3 and 4 show an example of the internal structure of the laundry treatment apparatus.
5 shows an example of a stator.
6 shows an example of a rotor.
7 to 10 show an example of a power transmission unit.
11 shows an example of a heat insulating part.
12 and 13 are cross-sectional views of the power transmission unit.

Hereinafter, an embodiment of the laundry treatment apparatus will be described in detail with reference to the accompanying drawings.

1 illustrates an example of a laundry treatment apparatus 100, wherein the laundry treatment apparatus 100 is provided in a cabinet 1 and rotatably inside the cabinet to store clothing (objects to be washed or dried). It can be provided to include a drum (2) providing space. As shown in Fig. 2, inside the cabinet 1, high-temperature dry air (air at a temperature higher than room temperature, air with a degree of drying higher than that of the indoor air) is supplied to the drum 2 through the drum 2 to remove the clothes from the clothes. A drying unit 3 for removing moisture may be provided.

As shown in FIG. 3 , the cabinet 1 includes a front panel 11 forming a front surface of the laundry treatment apparatus, and a base panel 17 forming a bottom surface of the laundry treatment apparatus. The front panel 11 is provided with an inlet 111 communicating with the drum 2 , and the inlet 111 may be provided to be closed by the door 113 .

A control panel 115 is provided on the front panel 11, and the control panel 115 may include an input unit for receiving a control command from a user, and a display unit for outputting information such as a control command selectable by the user. . The input unit may be provided to include a power supply request unit for requesting power supply to the laundry treatment apparatus, a course input unit for allowing a user to select a desired course from among a plurality of courses, and an execution request unit for requesting the start of the course selected by the user. have.

The drum 2 may be provided in a cylindrical shape with an empty inside. 2 shows a cylindrical drum body 21 having an open front and rear face of the drum 2, a front cover 22 forming a front face of the drum body 21, and the drum body 21. A case provided with the rear cover 23 forming the rear surface of the is shown as an example. The front cover 22 is provided with a drum inlet 221 for communicating the inside of the drum body 21 with the outside, and the rear cover 23 has an air inlet 233 for introducing outside air into the drum body 21 . ) may be provided.

3 , the drum body 21 may further include a lifter 24 . In the lifter 24, a board extending from the front cover 22 toward the rear cover 23 protrudes from the drum body 21 toward the center of rotation of the drum 2 (circle of the drum). It may be provided by protruding from the main surface toward the center of rotation of the drum).

When the clothes treatment apparatus 100 is provided as a device only for drying clothes, the drum 2 has a drum through hole provided to pass through the drum body 21 in order to communicate the inside of the drum with the outside of the drum. It doesn't matter if this is not available.

The drum 2 may be rotatably fixed to at least one of the body first support part 12 and the body second support part 15 . In the drawing, the rear cover 23 is rotatably fixed to the body second support part 15 through a motor 5 (a driving part), and the front cover 22 is rotatable to the body first support part 12 . It is shown as an example in the case of a strong connection.

The body first support part 12 may be provided as a support panel 121 fixed to the cabinet 1 and positioned between the front panel 11 and the front cover 22 . The support panel 121 may be fixed to the base panel 17 and positioned between the front panel 11 and the front cover 22 . In this case, the rear surface (the surface facing the support panel) of the front panel 11 may be fixed to the support panel 121 , and the lower end may be fixed to the base panel 17 .

The support panel 121 includes a support panel through-hole 122, a drum connection body 123 connecting the support panel through-hole 122 and the drum inlet 221 (refer to FIG. 2), and the support panel through-hole ( 122) and the panel connecting body 125 for connecting the inlet 111 may be provided. The support panel through-hole 122 is provided to pass through the support panel 121 and is a means for communicating the inlet 111 and the drum inlet 221 .

As shown in FIG. 2 , the drum connection body 123 may be provided as a pipe fixed to the rear surface of the support panel 121 (a surface facing the drum inlet in the space provided by the support panel). One end of the drum connection body 123 may be provided to surround the support panel through-hole 122 , and a free end of the drum connection body 123 may be provided to support the front cover 22 . That is, the free end of the drum connection body 123 may be inserted into the drum inlet 221 or may be provided to contact the free end of the front cover 22 forming the drum inlet 221 .

FIG. 2 illustrates an example in which the free end of the drum connection body 123 comes into contact with the free end of the front cover 22 . In this case, the drum connection body 123 may be provided with a ring-shaped connection damper 124 . The connection damper 124 minimizes the risk of the drum inlet 221 being separated from the drum connection body 123 when the drum 2 rotates or vibrates (the risk of air leaking into the cabinet). is a means to

The panel connection body 125 may be provided as a pipe fixed to the front surface of the support panel 121 (a surface facing the front panel in the space provided by the support panel). One end of the panel connecting body 125 may be provided to surround the support panel through hole 122 , and the other end of the panel connecting body 125 may be provided to be connected to the inlet 111 . Accordingly, the clothes supplied to the inlet 111 enter the drum body 21 through the panel connecting body 125 , the support panel through hole 122 , the drum connecting body 123 , and the drum inlet 221 . can move

The support panel 121 is provided with an exhaust port 126 passing through the panel connection body 125 , and a filter 127 may be detachably fixed to the exhaust port 126 . The filter 127 may have any structure as long as it can filter foreign substances from the air moving from the drum 2 to the exhaust port 126 .

The support panel 121 may further include drum support parts 128 and 129 for preventing the drum 2 from sagging. The drum support part may be provided to include a first roller 128 and a second roller 129 fixed to the support panel 121 to rotatably support the drum 2 . 3 shows a case in which the first roller 128 and the second roller 129 are provided to support the drum body 21 , but the rollers 128 and 129 support the front cover 22 . It may be provided to support.

The body second support part 15 may be provided as a fixed panel 151 fixed to the cabinet 1 so as to be positioned at a point spaced apart from the rear cover 23 . 4 illustrates a case in which the fixing panel 151 is fixed to the base panel 17 to form a rear surface (a rear surface of the cabinet) of the laundry treatment apparatus 100 as an example.

The fixing panel 151 may be provided with a driving unit mounting groove 152 providing a space in which the motor 5 is mounted. The driving unit mounting groove 152 may be provided as a groove in which the fixing panel 151 is concavely bent toward the rear cover 23 of the drum. The fixed panel 151 is provided with a fixed panel through-hole 153 through which a shaft (output shaft) for rotating the drum 2 passes. The fixed panel through-hole 153 is formed inside the driving unit mounting groove 152 can be located in

As described above, when the drum 2 is provided with the drum body 21, the front cover 22 fixed to the drum body, and the rear cover 23 fixed to the drum body, the drum body 21 ), the rigidity of the drum is increased compared to the structure in which the open front and rear surfaces of the support panel 121 and the fixed panel 151 are rotatably connected to each other. When the rigidity of the drum is increased, it is possible to minimize the deformation of the drum body 21 when the drum is rotated, which is in the space between the drum body and the support panel and the space between the drum body and the fixed panel when the drum body 21 is deformed. It is possible to minimize the problem of clothes getting caught (it is possible to minimize the load on the motor).

As shown in FIG. 2 , the drying unit 3 includes an exhaust passage 31 connected to the exhaust port 126 , and a supply passage for guiding air in the exhaust passage 31 to the drum body 21 ( 32), and a heat exchange unit 34 provided in the exhaust passage 31 to sequentially dehumidify and heat air.

The exhaust passage 31 includes a first duct 311 connected to the exhaust port 126 , a second duct 312 connected to the supply passage 32 , and the first duct 311 and the second duct 312 . It may be provided to include a third duct 313 connecting the. The third duct 313 may be fixed to the base panel 17 .

The heat exchange unit 34 may be provided with various devices capable of sequentially dehumidifying and heating the air introduced into the exhaust passage 31 . ) is shown as an example. That is, the heat exchange part 34 is provided inside the first heat exchanger (heat absorbing part, 341) for removing moisture from the air introduced into the exhaust passage 31, and the exhaust passage 31, and the heat absorbing part 341 ) of a second heat exchanger (heating unit, 343) that heats the air passing through, and the air discharged from the drum (2) passes through the heat absorbing unit and the heat generating unit sequentially and then moves to the supply duct (32) a fan 349 .

The heat absorbing part 341 and the heat generating part 343 are sequentially arranged along the moving direction of the air, and are connected to each other through a refrigerant pipe 348 forming a circulation path of the refrigerant. The refrigerant moves along the refrigerant pipe 348 by the compressor 345 located outside the exhaust passage 31, and the refrigerant pipe 348 is provided with a pressure regulator 347 for controlling the pressure of the refrigerant. do.

As shown in FIG. 4, the air inlet 233 provided in the rear cover 23 of the drum may be provided by having a plurality of holes disposed so as to surround the center of the rear cover 23 (the center of rotation of the drum). can In this case, the supply flow path 32 is provided in the fixed panel 151 to form a movement path of the air discharged from the second duct 312, the supply duct 321, inside the supply duct 321. It may be provided to include a first flow path forming part 323 and a second flow path forming part 324 for guiding air to the air inlet 233 .

The supply duct 321 may be provided so that the fixing panel 151 is bent in a direction away from the rear cover 23 to form a flow path (air movement path). In addition, the supply duct 321 may be provided in a ring shape surrounding the driving part mounting groove 152 , and the second duct 312 may be provided to be connected to the circumferential surface of the supply duct 321 . .

The first flow path forming part 323 is provided to surround the outer circumferential surface of a ring formed by the air inlets 233 , and the second flow path forming part 324 includes the air inlets 233 . It may be provided to surround the inner circumferential surface of the ring to be formed.

The first flow path forming part 323 and the second flow path forming part 324 may be fixed to the rear cover 23 or fixed to the supply duct 321, FIG. 4 shows the flow path forming parts (323, 324) is shown as an example when the case is fixed to the rear cover (23). In the case of FIG. 4 , the free end of the first flow path forming part 323 surrounds the outer circumferential surface of the flow path (ring-shaped flow path) formed by the supply duct 321 , and the second flow path forming part 324 . The free end of the is provided to surround the inner circumferential surface of the flow path formed by the supply duct 321 . The first flow path forming part 323 and the second flow path forming part 324 may be formed of rubber, felt, or the like.

A motor 5 rotating the drum 2 includes a stator 51 positioned in the driving part mounting groove 152 to form a rotating field, and a rotor 52 rotating by the rotating magnetic field. provided to include. The rotational motion of the rotor 52 is transmitted to the drum 2 through the power transmission unit 6 fixed to the fixing panel 151, and the stator 51 is the fixed panel 151 or the power It is fixed to at least one of the transmission parts (6). When the stator 51 is fixed to the power transmission unit 6, there is an advantageous effect in maintaining the coaxiality of the input shaft 65 and the output shaft 66 provided in the power transmission unit 6 (drum It is possible to minimize the vibration of the laundry treatment device during the rotation of the machine, and it is possible to minimize the deterioration of the durability of the power transmission unit).

In order to prevent the motor 5 provided in the driving part mounting groove 512 from being exposed to the outside (to improve the durability of the motor and prevent safety accidents by preventing the motor from being exposed to the external environment), the fixing panel ( 151) may further include a cover panel 19 for preventing the motor 5 from being exposed to the outside. Furthermore, the cover panel 19 may be provided in a shape that prevents the supply duct 321 from being exposed to the outside (a shape surrounding the supply duct). This is to minimize the escape of heat to the outside of the supply duct 321 as well as to prevent a safety accident that may occur when the body comes into contact with the supply duct 321 .

As shown in FIG. 5 , the stator 51 is a core 511 (ring-shaped core) having a through hole (core through hole, 511b) in the center, radially from the outer circumferential surface of the core 511 . A plurality of protruding support bars 511a, a ring-shaped core insulating part 512 provided to insulate the core, and a plurality of insulating support bars provided in the core insulating part to surround each of the support bars It may be provided to include a part 514 and a coil (not shown) provided in the support bar insulating part 514 .

Since the core insulating part 512 must be provided to form a space in which the core 511 is accommodated, the core insulating part 512 is provided in a ring shape with an insulating part through hole 513 in the center. For ease of assembly, the core insulating part 512 may be provided with a first insulating body 512a and a second insulating body 512b. In this case, the support bar insulating part 514 may be provided as a support bar first insulating part provided on the first insulating body 512a and a support bar second insulating part provided on the second insulating body.

A stator bracket 515 is provided in the core insulating part 512 , and the stator bracket 515 protrudes from the inner circumferential surface of the core insulating part 512 toward the center of the insulating part through hole 513 . It may be provided with a plurality of brackets. When the core insulating part 512 is provided with a first insulating body 512a and a second insulating body 512b, the stator bracket 515 includes a first bracket 515a provided on the first insulating body, and a second bracket 515b provided on the second insulating body and coupled to the first bracket 515a.

The stator bracket 515 may be fixed to the power transmission unit 6 through a stator fastening part such as a bolt, and for this purpose, the fastening part through hole 516 may be provided in the stator bracket 515 .

As shown in FIG. 6 , the rotor 52 extends from the rotor body 521 and the edges of the rotor body 521 toward the fixing panel 515 to form a space in which the stator 51 is accommodated. It may be provided to include a plurality of permanent magnets 523 fixed to the rotor circumferential surface 522, and the rotor circumferential surface 522 so that the N poles and the S poles are alternately exposed.

The motor 5 may further include a motor heat dissipation unit 53 for discharging heat generated from the stator 51 to the outside of the rotor 52 . The motor heat dissipation unit 53 is provided in a plurality of rotor through-holes 531 provided to pass through the rotor body 521 and the rotor body 521 so that air inside the rotor passes through the rotor through-holes 531 . ) may be provided to include a rotor blade 533 that forms an airflow to move.

The rotor through-hole 531 is provided as a slit extending from the center of the rotor body 521 toward the rotor circumferential surface 522 , and the rotor blade 533 is disposed in the rotor body 521 in the fixing panel It may be provided as a plate protruding toward (151). In this case, the rotor blade 533 is preferably provided to extend from the center of the rotor body 521 toward the rotor circumferential surface 522 . The rotor through-hole 531 may be provided such that a plurality of slits are radially disposed with respect to the center (input shaft) of the rotor body 521 , and the rotor blade 533 is formed of the rotor through-hole 531 . It can be fixed on the edge.

7 shows an example of the power transmission unit 6, the power transmission unit 6 is a housing (H) fixed to the fixing panel 151, the bottom surface of the housing (H) (a rotor is The input shaft 64 is rotatably fixed to the side facing the direction in which it is located), the output shaft 65 is rotatably fixed to the upper surface of the housing H (the side facing the direction in which the fixing panel is located), and the It is provided inside the housing to include a gear unit that transmits the rotational motion of the input shaft 64 to the output shaft 65 . The input shaft 64 has one end fixed to the rotor 52 and the other end provided as a shaft positioned inside the housing H, and the output shaft 65 has one end fixed to the rear cover 23 and the other end. may be provided as a shaft positioned inside the housing (H).

Preferably, the housing H is fixed to the fixing panel 151 so as to be positioned in a space (space outside the cabinet) separated from the space (internal space of the cabinet) in which the drum 2 is located. This is to improve the durability of the power transmission unit 6 by minimizing the transfer of heat (heat emitted from the drum or drying unit) inside the cabinet to the inside of the housing (H).

The input shaft 64 may be coupled to the rotor body 521 through the shaft coupling part 54 shown in FIG. 6 . The shaft coupling part 54 may include a disk-shaped coupling body 541 and a shaft coupling hole 543 provided to pass through the coupling body and to which one end of the input shaft 64 is coupled.

In order to facilitate assembly of the fastening body 541 and the rotor body 521, a body protrusion 544 is provided on the fastening body 541, and the body protrusion 544 is inserted into the rotor body 521. A body protrusion through-hole 524 may be provided.

Furthermore, in order to increase the strength of the fastening body 541 , the fastening body 541 may further include a fastening body bent portion 542 . The fastening body bent portion 542 may be provided by bending a surface of the fastening body 541 facing the housing H to be concavely bent toward the rotor body 521 . In this case, a bent part through hole 525 through which the fastening body bent part 542 passes may be provided in the rotor body 521 .

The output shaft 65 is inserted into the fixing panel through-hole 153 and connected to the drum 2, and the rear cover 23 has a shaft bracket 231 to which the output shaft 65 is fixed (refer to FIG. 4). This may be provided. This is to distribute the stress acting on the center of the rear cover 23 when the output shaft 65 is rotated.

In order to prevent sagging of the housing H and minimize deformation of the fixing part mounting groove 152 , the housing H is connected to the fixing panel through the transmission part bracket 61 and the housing coupling part 612 . (151) can be fixed.

As shown in FIG. 4 , a bracket through-hole 611 through which the output shaft 65 passes is provided in the transmission unit bracket 61 , and the housing coupling unit 612 is connected to the housing H and the transmission unit 612 . It may be provided as a bolt connecting the sub bracket 61 . The transfer bracket 61 may be made of the same material as the fixed panel 151 or may be made of a material having a strength higher than that of the fixed panel 151 .

4 shows a case in which the transmission unit bracket 61 is fixed to the surface of the fixing panel 151 facing the rear cover 23, the transmission unit bracket 61 is the fixing panel 151. It may be fixed to the surface facing the cover panel 19 among the space provided.

As shown in FIG. 8 , the housing (H) is provided in a cylindrical shape with an empty interior, the housing body 62 having an open hole on the surface facing the fixed body 151, and the housing body 62 ) and may be provided to include a housing cover 63 that closes the opening hole.

The housing body 62 is provided to include an accommodating space 622 in which the gear unit G is mounted, and the accommodating space 622 may be provided to communicate with the outside through the open hole. The accommodation space 622 is formed through a housing base 621a to which the input shaft 64 is fixed, and a housing circumferential surface 621b extending from an edge of the housing base 621a toward the housing cover 63 . It can be provided as much as possible.

9, the housing body 62 is provided with an input shaft support portion 625 extending from the housing base 621a toward the rotor 52, and the input shaft support portion 625 is the housing body. It may be provided as a pipe surrounding the input shaft through-hole 626 provided to penetrate the 62 . That is, the input shaft through-hole 626 is provided to pass through the input shaft supporting part 625 to be connected to the receiving space 622 .

The input shaft 64 inserted into the input shaft through hole 626 is rotatably fixed to the input shaft support 625 through input shaft bearings 628 and 629 . The input shaft bearing) includes a first input shaft bearing 628 and an input shaft second bearing 629 fixed inside the input shaft through hole 626 so as to be positioned between the input shaft first bearing 628 and the rotor 52 . It may be provided to include.

The free end of the input shaft supporting part 625 may be provided to be inserted into the fastening body bent part 542 provided in the shaft coupling part 54 . In order to fix the two input shaft bearings 628 and 629, the length of the input shaft support part 625 has to be increased. When the free end of the input shaft support part 625 is inserted into the fastening body bent part 542, the There is an effect that it is possible to minimize the space required for the installation of the motor 5 and the power transmission unit 6 (minimize the volume of the clothing processing apparatus).

The housing cover 63 may be provided in any shape as long as the opening hole provided in the housing body 62 can be opened and closed. The provided case is shown as an example. The housing cover 63 may be provided to be fixed to the housing body 62 through a cover fixing plate 623 provided on the housing circumferential surface 621b.

The housing cover 63 is provided to pass through the output shaft support portion 635 extending from the cover body 631 toward the fixing panel 151 and the output shaft support portion 635, the output shaft into which the output shaft 65 is inserted. It may be provided to include a through hole 632 and output shaft bearings 638 and 639 provided in the output shaft support part 635 to rotatably fix the output shaft 65 to the output shaft through hole 632 .

The housing cover 63 is provided on the cover body 631 and includes a mounting part 637 to which the stator 51 is fixed. The mounting part 637 may be provided in various shapes to which a stator fastening part (bolt, etc.) can be coupled.

A plurality of the mounting parts 637 may be provided along the circumferential surface of the cover body 631 , and the number of the stator brackets 515 is preferably the same as the number of the mounting parts 637 .

When the mounting part 637 is provided as a cylinder protruding from the cover body 631 toward the rotor 52, the cover fixing plate 623 has a fixing plate through hole 624 into which the mounting part 637 is inserted. It is preferable to be provided. This is to minimize the outer diameter of the cover fixing plate 623 (to minimize the space required for the installation of the housing).

In order to increase the strength of the housing cover 63 , the cover body 631 includes a bent portion 634 formed by protruding a region including the output shaft through hole 632 toward the fixing panel 151 . can be

The output shaft bearing may be provided to include a first output shaft bearing 638 and an output shaft second bearing 639 fixed to the output shaft support part 635 and positioned inside the output shaft through hole 631 . In addition, in order to prevent external air from being supplied to the output shaft bearings 638 and 639, the housing cover 63 has a sealer 633 fixed to the output shaft support part 635 and closing the output shaft through-hole 632. It may be provided to further include.

The housing H is fixed to the fixing panel 151 through a housing coupling part 612, and the stator 51 has a stator coupling part inserted into the coupling part through-hole 516 to the mounting part 637. By being fixed, it is fixed to the housing (H), and the rotor (52) is fixed to the housing (H) through an input shaft (64). That is, since the stator 51 and the rotor 52 are fixed to the housing H (because the stator and the rotor vibrate together with the housing), the coaxiality of the input shaft 64 and the output shaft 65 is degradation can be minimized.

The gear unit (G) is fixed to the housing circumferential surface (621b), a ring gear (66) positioned in the receiving space (622), and fixed to the input shaft (64) and located inside the receiving space (622) The main gear 69, the cage 67 located inside the accommodation space 622 and having the other end of the output shaft 65 fixed, is rotatably fixed to the cage 67, and the main gear 69 and the It may be provided to include a driven gear 98 connecting the ring gear 66 .

As shown in FIG. 9 , the ring gear 66 includes a gear body 661 fixed to the housing circumferential surface 621b, and a gear tooth 662 provided along the inner circumferential surface of the gear body. , gear teeth) may be provided to include.

The cage 67 is located inside the gear body through hole 663 passing through the gear body and passes through the first base 671 to which one end of the output shaft 65 is fixed, the gear body. A second base 672 located inside the hole 663 and having a base through hole 673 in the center, and connecting the first base and the second base to form a rotation axis of the driven gear 68 It may be provided to include a connecting shaft (675). Since the output shaft 65 is fixed to the first base 671 , whether the output shaft 65 rotates is determined according to whether the cage 67 rotates.

The driven gear 68 may be provided with a plurality of gears. In the drawings, the driven gear is provided as a first driven gear 681 , a second driven gear 682 , and a third driven gear 683 . is shown as an example. The input shaft 64 is inserted into the base through hole 673 to form a coaxial shaft with the output shaft 65, and the gear teeth provided in the main driven gear 69 are located in the space formed between the driven gears. The gear teeth of the driven gears 682 , 682 , 683 mesh with each other.

10, in order to facilitate the coupling or assembly of the ring gear 66 and the housing body 62, the gear body 661 is provided with a fastening protrusion receiving groove 664, A ring gear fastening protrusion 621c inserted into the fastening protrusion receiving groove 664 may be provided on the housing base 621a.

In order to increase the durability of the gear unit (G), the housing (H) may further include a heat insulating portion (7). The heat insulating part 7 is a means for minimizing transfer of external heat to the receiving space 622 inside the housing, and is preferably made of a material having a lower thermal conductivity than that of the housing H. That is, when the housing body 62 and the housing cover 63 are made of a metal material, the heat insulating part 7 is preferably made of a non-metal material such as plastic.

When the housing (H) is fixed to the fixing panel 151 and positioned in the external space of the cabinet, the heat insulating part 7 is made of a material having a lower thermal conductivity than that of the fixing panel 151. desirable.

The heat insulating part 7 may be provided to surround the entire housing H, or may be provided only in a region of the housing H facing the fixing panel 151 . 10 illustrates an example in which the heat insulating part 7 is provided only in the housing cover 63 (region facing the fixing panel).

11 , the heat insulating part 7 may be integrally provided with the housing cover 631 . An example may be the case in which the heat insulating part 7 and the housing cover 63 are formed through insert injection molding in which a molten material (plastic, etc.) is injected into a mold in which the housing cover 63 is accommodated. have.

The heat insulating part 7 may be provided to include a cover heat insulating body 71 fixed to the cover body 631 , and a supporting part heat insulating body 72 surrounding a circumferential surface of the output shaft support part 635 . As shown in FIG. 10 , the cover heat insulating body 71 includes a first heat insulating body 711 formed on a surface facing the fixing panel 151 in the space provided by the cover body 631 , and the cover body It may be provided to include at least one of the second heat insulating body 712 formed on the surface facing the housing body 62 of the space provided by the 631 .

When the cover insulation body 71 is provided to include both the first insulation body 711 and the second insulation body 712 , the cover insulation body 71 passes through the cover body 631 and the second insulation body 71 passes through the cover body 631 . Preferably, it is provided to further include a connecting body 713 connecting the first insulating body 711 and the second insulating body 712 . In this case, the cover body 631 should be provided with a cover through hole 636 (refer to FIG. 11 ) in which the connection body 713 is located.

As shown in FIG. 11 , the heat insulating part 7 may be provided to further include a mounting part heat insulating body 73 surrounding the mounting part 637 . This is to minimize heat transfer of the heat of the motor 5 to the cover body 631 through the mounting part 637 . Preferably, the mounting part heat insulation body 73 is provided to surround the entire circumferential surface of the mounting part 637 .

In order to facilitate coupling between the stator 51 and the mounting unit 637 , the laundry treatment apparatus may further include a stator position setting unit 74 . The stator position setting unit 74 includes a bracket protrusion 741 provided on the stator bracket 515 (refer to FIG. 5), and a protrusion provided on the second heat insulating body 712 to which the bracket protrusion 741 is inserted. It may be provided to include a receiving groove 742 (refer to FIG. 9).

Unlike the above, the heat insulating part is fixed to the fixed panel 151 and positioned between the housing cover 63 and the fixed panel 151 , or fixed to the fixed panel 151 and formed with the fixed panel 151 and the fixed panel 151 . It may be provided to be positioned between the rear cover 23 . In this case, the heat insulating part is provided to surround the fixing panel through-hole 153 and may be provided as a plate having a diameter longer than the diameter of the cover body.

The power transmission unit 6 having the above-described structure is located inside the accommodation space 622 in which the gear unit G is formed by the housing body 62 . That is, the ring gear 66 , the main driving gear 69 , and the driven gear 68 are provided so as not to deviate from the accommodation space 622 . The reason that the accommodation space 622 is provided only in the housing body 62 is that the gear unit G is located at a point as far away as possible from the fixing panel 151 (a heat source that radiates heat inside the cabinet to the outside of the cabinet). to do it Through this, the laundry treatment apparatus 100 can minimize the deterioration of the durability of the gear unit (G).

On the other hand, in the power transmission unit 6 having the above-described structure, a repulsive force acting between the gears is transmitted to the input shaft 64 and the output shaft 65 when the main gear 69 and the driven gear 68 rotate. That is, an external force acting in a direction away from the housing (H) or toward the inside of the housing (H) is input to the input shaft 64 and the output shaft 65 when the main and driven gears are rotated. The above-described situation is conspicuously observed when the main driving gear, the driven gear, and the ring gear are provided as helical gears.

12 , in order to minimize the risk of separation from the input shaft bearings 628 and 629 or the input shaft support 625 due to an external force acting on the input shaft 64, the laundry treatment apparatus 100 A damper 9 may be provided.

The damper 9 is provided in the input shaft through-hole 626 so as to be positioned between the input shaft first bearing 628 and the input shaft second bearing 629, and the vibration of the input shaft first bearing 628 is It is a means for attenuating the transmission to the input shaft second bearing (629).

The damper 9 may be provided with an elastic body (eg, rubber) fixed to the circumferential surface of the input shaft 64 and positioned between the input shaft first bearing 628 and the input shaft second bearing 629 . 8, the damper 9 has a diameter shorter than the diameter of the input shaft 64 and the damping body 91 having a diameter shorter than the diameter of the input shaft through-hole 626, shorter than the outer diameter of the input shaft bearing damping body), and a damping body through hole 92 provided to pass through the damping body 91 and into which the input shaft 64 is inserted.

12 , in order to minimize vibration of the housing H, one surface of the damping body 91 is in contact with the input shaft first bearing 628 , and the other surface of the damping body 91 is in contact with the first bearing 628 . is preferably provided to contact the input shaft second bearing 629 .

Further, the input shaft support part 625 has a stopper (627, first stopper) protruding toward the center of the input shaft through hole 626 and positioned between the input shaft first bearing 628 and the input shaft second bearing 629. may be further provided. The first stopper 627 is a means for limiting the range in which the input shaft first bearing 628 moves toward the input shaft second bearing 629, or the input shaft second bearing 629 is the input shaft first bearing. It is a means of limiting the range of movement towards (628).

Since the damping body 91 is coupled to the circumferential surface of the input shaft 64 (since the damping body may be provided to rotate together with the input shaft), the radius of the damping body 91 (outer radius of the damper) is Preferably, the distance from the center of the input shaft through-hole 626 to the first stopper 627 is shorter than the distance.

In order to minimize the problem that the output shaft bearings 638 and 639 are separated from the housing H due to an external force acting on the output shaft 65, the output shaft support part 635 has the output shaft first bearing 638 and A stopper 635c (second stopper) for limiting the range of the output shaft second bearing 639 may be provided. As shown in FIG. 11 , the output shaft support part 635 includes a first mounting part 635a where the output shaft first bearing 638 is positioned, and a second mounting part 635b where the output shaft second bearing 639 is positioned. ), the second stopper 635c may be provided with a protrusion positioned between the first mounting part 635a and the second mounting part 635b.

In order to minimize heat transfer to the inside of the housing H and to dissipate the heat of the housing H to the outside, the laundry treatment apparatus may further include a heat dissipation unit 8 . As shown in FIG. 8 , the heat dissipation part 8 is provided on the fastening body 541 to discharge the air between the housing body 62 and the rotor 52 to the outside of the rotor 52 . Among the first heat dissipating part 81 and the second heat dissipating part 82 provided on the circumferential surface 621a of the housing body to dissipate heat inside the accommodating space 622 to the outside of the accommodating space 622 . It may be provided to include at least one.

The first heat dissipation part 81 may be provided as a blade protruding from the fastening body 541 toward the housing base 621a. When the rotor 52 is rotated, the fastening body 541 and the first heat dissipating part 81 will rotate, so that air between the rotor 52 and the housing body 62 passes through the rotor through hole 531 . ) and the like, are discharged to the outside of the rotor 52, and in this process, the temperature of the housing H will be lowered.

8 illustrates an example in which the first heat dissipation part 81 is provided with a plurality of blades radially arranged around the shaft coupling hole 543, the blade having only one in the fastening body 541. it might be

On the other hand, when the fastening body bent portion 542 is provided on the fastening body 541 , the first heat dissipation part 81 extends from the fastening body bent part 542 to the edge of the fastening body 541 . It is preferable to be provided with a blade. This increases the height of the blade (the length of the blade with respect to the direction from the fastening body to the housing body), thereby increasing the air discharge effect can be expected.

The second heat dissipation part 82 includes a housing protrusion (cooling fin, etc.) protruding from the housing circumferential surface 621b or a housing bending part (bending) bent from the housing circumferential surface 621b toward the accommodation space 622 . groove, etc.) may be provided. Since the second heat dissipation part 82 increases the surface area of the housing circumferential surface 621b, it is easy for the housing body 62 to exchange heat with outside air.

Hereinafter, an operation process of the above-described power transmission unit 6 will be described with reference to FIG. 13 .

13 shows the inside of the housing body 62, when the rotor 52 rotates, the input shaft 64 rotates. When the main driving gear 69 rotates by the input shaft 64 , the driven gears 681 , 682 , 683 meshed with the main driving gear 69 also rotate. Since the driven gears 681, 682, and 683 are meshed with the ring gear 66 fixed to the housing body 62, when the driven gear 68 rotates, the cage 67 and the output shaft ( 65) rotates, and the drum 2 fixed to the output shaft 65 will also rotate.

Some of the heat supplied to the drum 2 by the drying unit 3 will be discharged to the outside of the drum 2 (inside the cabinet), and the heat inside the cabinet will be discharged to the outside of the cabinet . When the heat emitted from the cabinet 1 is transferred to the inside of the housing H of the power transmission unit 6, durability of the gear unit G and the like may be reduced, but the laundry treatment apparatus 100 Since the heat insulating part 7 can minimize the heat transfer to the inside of the housing H, the risk of deterioration of the durability of the gear unit G can be reduced.

In addition, in the laundry treatment apparatus 100 , a first heat dissipation unit 81 provided on a fastening body 541 connecting the input shaft 64 and the rotor 52 , and a first heat dissipation unit 81 provided on the housing circumferential surface 621b . Since the second heat dissipation unit 82 and the motor heat dissipation unit 53 provided in the rotor are provided, the situation in which the stator 51 is overheated during the rotation of the rotor 52 (during the rotation of the drum), and the accommodation It is possible to minimize the situation in which the space 622 is overheated.

The above-described laundry treatment apparatus may be modified and implemented in various forms, and the scope of the present application is not limited to the above-described embodiments.

100: clothes processing device 1: cabinet 11: front panel
111: inlet 113: door 115: control panel
12: body first support part 121: support panel 122: support panel through hole
123: drum connection body 124: connection damper 125: panel connection body
126: exhaust port 127: filter 128: first roller
129: second roller 15: body second support 151: fixed panel
152: driving unit mounting groove 153: fixing panel through hole 17: base panel
19: cover panel 2: drum 21: drum body
22: front cover 221: drum inlet 23: rear cover
231: shaft bracket 233: air inlet 24: lifter
3: drying unit 31: exhaust passage 311: first duct
312: second duct 313: third duct 32: supply passage
321: supply duct 323: first flow path forming part 324: second flow path forming part
34: heat exchange unit 5: motor 51: stator
511: core 511a: support bar 511b: core through hole
512: core insulating part 513: insulating part through-hole 514: support bar insulating part
515: stator bracket 516: fastening part through hole 52: rotor
521: rotor body 522: rotor circumferential surface 523: permanent magnet
53: motor heat dissipation unit 54: shaft fastening unit 541: fastening body
542: fastening body bent portion 543: shaft coupling hole 544: body projection
6: power transmission unit 61: transmission unit bracket 611: bracket through hole
612: housing fastening part H: housing 62: housing body
621a: housing base 621b: housing circumferential surface 621c: ring gear fastening protrusion
622: receiving space 623: cover fixing plate 624: fixing plate through hole
625: input shaft support 626: input shaft through hole 627: first stopper
628: input shaft first bearing 629: input shaft second bearing 63: housing cover
631: cover body 632: output shaft through-hole 633: sealer
634: bent part 635: output shaft support part 635c: second stopper
636: cover through hole 637: mounting portion 638: output shaft first bearing
639: output shaft second bearing 64: input shaft 65: output shaft
Gear unit (G) 66: Ring gear 67: Cage
671: first base 672: second base 673: base through hole
675: connecting shaft 68: driven gear 69: main gear
7: insulation unit 71: cover insulation body 711: first insulation body
712: second insulation body 713: connection body 72: support portion insulation body
73: mounting unit insulation body 74: stator position setting unit
741: bracket projection 742: projection receiving groove 8: heat dissipation unit
81: first heat dissipation unit 82: second heat dissipation unit 9: damper
91: damping body 92: damping body through hole

Claims (12)

A drum body providing a space for storing clothes, a front cover forming a front surface of the drum body, a rear cover forming a rear surface of the drum body, and a drum passing through the front cover and communicating with the inside of the drum body a drum equipped with an inlet;
a drying unit supplying heated air to the drum;
a fixed panel provided at a position spaced apart from the rear cover;
a housing fixed to the fixing panel and provided with a housing body having an accommodating space formed therein and an opening hole for communicating the accommodating space to the outside, and a housing cover coupled to the housing body to close the opening hole;
an input shaft penetrating through the housing body and having one end positioned outside the housing and the other end positioned inside the accommodation space;
an output shaft penetrating through the housing cover and having one end fixed to the rear cover and the other end positioned inside the accommodating space;
a ring gear fixed to the housing body and positioned inside the accommodation space;
a main gear fixed to the input shaft and positioned inside the accommodation space;
a cage positioned inside the receiving space and having the other end of the output shaft fixed;
a driven gear rotatably fixed to the cage, connecting the main gear and the ring gear, and positioned inside the accommodation space; and
and a stator fixed to the fixed panel or the housing to form a rotating field, and a motor having one end of the input shaft fixed and a rotor rotating by the rotating magnetic field; Device. According to claim 1,
The housing body is provided to include a housing base, an input shaft through hole provided to penetrate the housing base into which the input shaft is inserted, and a housing circumferential surface extending from an edge of the housing base toward the fixing panel,
The accommodating space is formed by the housing base and the housing circumferential surface. 3. The method of claim 2,
and the ring gear, the main gear, and the driven gear are provided so as not to deviate from a space provided by the accommodation space. 3. The method of claim 2,
and the housing body further includes a cover fixing plate provided on a circumferential surface of the housing to fix the housing cover. 5. The method of claim 4,
The stator may include a ring-shaped core; a plurality of support bars projecting radially from the outer circumferential surface of the core; a ring-shaped core insulating part provided to surround the core; a plurality of support bar insulation portions provided in the core insulation portion to surround each of the support bars; a coil provided in the insulating part of the support bar; and a stator bracket provided on the inner circumferential surface of the core insulating part and coupled to the mounting part;
The housing cover further includes a mounting portion to which the stator bracket is detachably fixed,
and a fixing plate through hole through which the mounting part passes through the cover fixing plate. 3. The method of claim 2,
an input shaft support portion extending from the housing base toward the rotor and provided to surround the input shaft through-hole; and
and an input shaft bearing provided inside the input shaft support part to rotatably fix the input shaft to the input shaft support part. 7. The method of claim 6,
and the input shaft bearing is provided to include an input shaft first bearing and an input shaft second bearing positioned inside the input shaft support part. 3. The method of claim 2,
an output shaft through hole provided in the housing cover and into which the output shaft is inserted;
an output shaft support portion extending from the housing cover toward the fixing panel and provided to surround the output shaft through-hole;
an output shaft bearing coupling the output shaft to the output shaft support; and
and a sealer provided on the output shaft support part to block outside air from flowing into the output shaft bearing. 9. The method of claim 8,
and the output shaft bearing is provided to include a first output shaft bearing and a second output shaft bearing positioned inside the output shaft support part. 10. The method according to any one of claims 1 to 9,
and the housing is located in a space separated from a space in which the drum is located. 11. The method of claim 10,
and a heat insulating part which is made of a material having a lower thermal conductivity than that of the housing cover and is fixed to the housing cover. 11. The method of claim 10,
The clothes treatment apparatus according to claim 1, wherein the housing body and the housing cover are made of a metal material, and the heat insulating part is made of a non-metal material.

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