KR102541695B1 - Washing machine - Google Patents

Abstract

A laundry treatment apparatus according to the present invention includes an outer tub accommodating wash water therein, an inner tub disposed inside the outer tub and accommodating laundry therein, and a pulsator provided at a lower portion of the inner tub, , Disposed between a pulsator rotation shaft for rotating the pulsator, a blade provided on the lower side of the pulsator, a blade connection shaft for rotating the blade independently from the pulsator, and the pulsator and the inner tube, A jig fixed to the inner tub, a jig connecting shaft having an upper portion fixed to the jig and passing through the lower surface of the outer tub, and rotating the blade connecting shaft and the pulsator connecting shaft relative to the jig connecting shaft Includes gear module.

Description

Laundry processing device {WASHING MACHINE}

The present invention relates to a laundry treatment apparatus that circulates wash water by pumping it to the top of a washing tub using centrifugal force.

In general, a top-loading laundry treatment device refers to a laundry treatment device that puts and takes out laundry from the top of a washing tub. The most common type of top-loading laundry treatment apparatus is a pulsator type laundry treatment apparatus. The pulsator-type laundry treatment device is a washing water flow generated by forcibly flowing wash water by the mechanical force of a pulsator installed in the lower part of the washing tub and rotating in a state in which detergent, washing water, and laundry are put into the washing tub and thereby Laundry is washed by friction and emulsification of detergent.

The pulsator is rotated by a driving motor, and various water streams can be formed inside the washing tub through forward and reverse rotation.

On the other hand, conventionally, a circulation pump for pumping circulating water outside the washing tub is provided separately from the drive motor, and wash water is pumped from the bottom of the washing tub and sprayed from the top of the tub to the cloth, even with a small amount of water. A laundry treatment device capable of easily wetting laundry (also referred to as 'cloth') put into a washing tub with wash water has been developed.

However, when a pump is provided separately from the driving motor, additional pump purchase costs are incurred, which increases the manufacturing cost of the laundry treatment device, and the operation of the pump must be additionally controlled, resulting in complicated control.

In the prior art 1 (Korean Patent Publication No. 2003-0049818), a washing plate installed to move up and down inside the washing tub to pump wash water staying in a space between the washing tub and the outer tub, and rotatably installed at the bottom of the washing tub. Disclosed is an impeller and a power transmission means for reducing the rotational speed of the drive motor and transmitting it to the impeller. The washing water pumped by the washing plate and the impeller rises through the guide passage and is supplied back into the washing tub through the pumping water discharge hole.

In the prior art 2 (Korean Patent Publication No. 2013-0049094), a pulsator rotatably provided inside the drum, a drive motor mounted outside the tub to form rotational force between the drum and the pulsator, and a lower part of the pulsator Disclosed is a laundry treatment apparatus including a water flow forming means provided in the drum to form a water flow that is ejected as a direct current into the drum. The water flow forming means includes a centrifugal blade unit for forming ejection pressure by centrifugal force caused by rotation. The centrifugal blade unit and the pulsator are integrally rotated and rotated at the rotational speed of the driving motor.

Korean Patent Publication No. 2003-0049818 (2003. 06. 25.) Korean Patent Publication No. 2013-0049094 (2013. 05. 13.)

In the conventional general laundry treatment apparatus, detergent dissolution and impregnation are performed while only the pulsator rotates in a state in which wash water is supplied, so washing performance is deteriorated due to low detergent solubility, and it takes a lot of time for detergent dissolution and impregnation to occur there is a problem. The first task of the present invention is to solve this problem.

In the conventional general laundry treatment apparatus, washing water is supplied to the inside of the tub up to a relatively high water level for detergent dissolution and impregnation, thereby increasing the amount of water used. A second task of the present invention is to solve this problem, so that detergent dissolution and impregnation can be easily achieved even with a small amount of water used.

In the prior art 1, there is a problem that washing power due to friction is weakened because contact between the impeller and the laundry is limited. A third task of the present invention is to solve this problem.

In the prior art 2, when the rotational speed of the driving motor is increased to increase the ejection pressure by the centrifugal blade unit, the rotational speed of the pulsator is increased more than necessary, which rather interferes with smooth washing and increases the abrasion of the laundry. There is a problem that can occur, and the load due to laundry becomes excessively large. On the other hand, in the prior art 2, when the rotational speed of the drive motor is limited so that the rotational speed of the pulsator does not exceed a predetermined value, the degree of ejection pressure by the centrifugal blade unit is also limited. That is, in the prior art 2, since the centrifugal blade unit and the pulsator rotate integrally, a problem occurs in any case of increasing or decreasing the number of revolutions of the driving motor. A fourth task of the present invention is to solve this problem.

If two drive motors are used to provide a pulsator and blade structure that rotate separately from each other, there is a problem in that the parts cost of the drive motor is added and the shaft system structure for transmitting power from the drive motor has to be changed, and the motor control There is a problem that additional is required. A fifth task of the present invention is to solve this problem.

If water penetrates the power transmission unit, there is a problem that can cause a performance reduction or failure of the power transmission unit. A sixth task of the present invention is to solve this problem.

In order to solve the first problem, the present invention provides a structure for forming a water flow in addition to the pulsator.

In order to solve the second problem, the present invention provides a structure for increasing the rpm of the blade and lowering the rpm of the pulsator.

In order to solve the third problem, the present invention provides a structure capable of pumping wash water upward while generating frictional force according to contact between an impeller and laundry. It is to provide a pulsator and blade structure that rotates independently of each other.

In order to solve the fourth problem, the present invention provides a pulsator and blade structure that rotates separately from each other without rotating integrally.

In order to solve the fifth problem, the present invention provides a structure for transmitting power from one driving motor.

In order to solve the sixth problem, the present invention provides a structure for disposing a plurality of gears outside the outer tub.

Laundry treatment apparatus according to the present invention includes an outer tub accommodating wash water therein, an inner tub disposed inside the outer tub and accommodating laundry therein, and a pulsator provided at a lower portion of the inner tub, , Includes a pulsator connecting shaft for rotating the pulsator.

In order to solve the first to sixth problems, the laundry treatment apparatus according to the present invention includes a blade provided on the lower side of the pulsator, and a blade connecting shaft for rotating the blade independently from the pulsator.

In addition, the present invention provides a support structure for relatively rotating the blade connecting shaft and the pulsator connecting shaft with respect to the inner turbine. To this end, the laundry treatment apparatus according to the present invention includes a jig disposed between the pulsator and the inner tub and fixed to the inner tub, and a jig having an upper portion fixed to the jig and penetrating the lower surface of the outer tub. A connecting shaft and a gear module for relatively rotating the blade connecting shaft and the pulsator connecting shaft with respect to the jig connecting shaft.

Laundry treatment apparatus according to the present invention includes an outer tub accommodating wash water therein, an inner tub disposed inside the outer tub and accommodating laundry therein, and rotatably provided at a lower portion of the inner tub Contains a pulsator.

In order to solve the first to sixth problems, the laundry treatment apparatus according to the present invention, a blade rotatably provided on the lower side of the pulsator, disposed between the pulsator and the blade and fixed to the inner tub and a jig connecting shaft having an upper portion fixed to the jig and passing through a lower surface of the outer tub.

Through the above solution, water can be sprayed with strong pressure from the upper side, detergent dissolution and impregnation are rapidly achieved, and detergent solubility is remarkably increased.

In addition, detergent dissolution and impregnation are easily performed even with a small amount of water, thereby reducing the amount of water used.

In addition, by rotating the blade at a relatively high rotational speed using one drive motor and rotating the pulsator at a relatively low rotational speed, the pumping pressure and pumping head are increased, as well as performing smooth washing, and the wear and tear of the laundry It has the effect of reducing the rotational load.

In addition, while achieving the function of the present invention through a single shaft system through a power transmission unit that transmits driving force from one drive motor, there is an advantage that a separate drive motor is unnecessary, a change of the shaft system is unnecessary, and control is simple.

In addition, by using the planetary gear module, it is possible to reduce the torque load of the driving motor, and there is an effect of saving energy by driving the motor in a high efficiency region.

In addition, by allowing the pumped wash water to pass through the filter unit, there is an effect of easily removing foreign substances such as lint.

In addition, by disposing a plurality of gears outside the outer tub, it is difficult for the washing water accommodated inside the outer tub to penetrate into the power transmission unit, thereby significantly increasing the waterproofness of the power transmission unit.

1 is a longitudinal cross-sectional view of a laundry treatment apparatus cut vertically in the center according to an embodiment of the present invention.
2 is a perspective view showing a pulsator 122 and a circulation duct 126 provided inside the inner tube 120 of FIG. 1 .
Figure 3 is an exploded perspective view of each component of Figure 2;
FIG. 4 is a vertical cross-sectional view taken along the line A-A' of FIG. 2, and is a partially enlarged view.
5 is an exploded perspective view showing a state before the pulsator 122 of FIG. 4 is mounted on the connecting surface of the base 121.
Figure 6a is an enlarged vertical cross-sectional view of a power transmission unit and a pulsator portion according to an embodiment of the present invention.
Figure 6b is an enlarged vertical cross-sectional view of a power transmission unit and a pulsator portion according to another embodiment of the present invention.
7 is a cross-sectional perspective view of the power transmission unit of FIG. 6A cut horizontally along the line BB'.
8 is a cross-sectional perspective view of the power transmission unit of FIG. 6A cut horizontally along the line C-C′.
9A is a conceptual cross-sectional view of the gear modules 342, 343, 344, and 345 cut horizontally according to the embodiment of FIG. 6A, when the washing shaft 132a relatively rotates with respect to the spin-drying shaft 132b, the sun gear 342 ), the planetary gear 343 and the ring gear 345 are engaged with each other to rotate.
9B is a conceptual cross-sectional view of the gear modules 342, 343', 344', and 345' horizontally cut according to another embodiment of FIG. 6B, when the washing shaft 132a relatively rotates with respect to the spin-drying shaft 132b. 342, the planetary gear 343' and the ring gear 345' are engaged with each other to rotate.
FIG. 10 is a cross-sectional conceptual view of the gear module of FIG. 6A or 6B cut horizontally, wherein the sun gear 342, the carriers 344 and 344', and the ring gear are integrally rotated when the spin-drying shaft 132b and the washing shaft 132a are integrally rotated. (345, 345 ') is a view showing the state that rotates integrally.
In order to distinguish one embodiment of the present invention from another embodiment, a comma (') is displayed after drawing reference numerals of parts that are different from one embodiment as components according to another embodiment. In addition, the same reference numerals are used for the same or extremely similar parts throughout the specification.

Hereinafter, a laundry treatment apparatus according to the present invention will be described in detail with reference to the drawings. In this specification, the same or similar reference numerals are assigned to the same or similar components even in different embodiments, and the description is replaced with the first description. Singular expressions used herein include plural expressions unless the context clearly dictates otherwise.

Expressions referring to directions such as 'upper' and 'lower' mentioned below are defined based on the top-loading washing machine of FIG. 1, but this is only for explanation so that the present invention can be clearly understood. Of course, each direction can be defined differently depending on where it is placed.

The 'central axis' referred to below means a straight line on which the axis of rotation of the inner tub 120 is disposed. A 'centrifugal direction' referred to below means a direction away from the central axis, and a 'anti-central direction' means a direction approaching the central axis. Also, 'circumferential direction' means a direction of rotation around the central axis. The 'outer periphery' of a certain element means 'a part formed along the circumferential direction from the centrifugal direction part' of the corresponding element.

When looking from the top to the bottom, one of the clockwise and counterclockwise directions is defined as a 'first direction' and the other is defined as a 'second direction'.

The use of terms with expressions such as 'first, second, third, fourth, fifth, sixth' in front of the components mentioned below is only to avoid confusion between the components referred to, and the components It has nothing to do with the order, importance or master-servant relationship between them. For example, a laundry treatment apparatus including only the second component without the first component may be implemented.

As mentioned below, that the first component is 'fixed' to the second component means that the first component is coupled to the third component as well as when the first component is directly coupled to the second component. and the third component is coupled to the second component to include the case where the relative position of the first component to the second component is maintained. In addition, that the first component is 'fixed' to the second component means that the first component and the second component are integrally formed.

Hereinafter, the first component 'rotating integrally' with the second component means that the first component rotates at the same rotational speed and in the same rotational direction as the second component. Not only when the components are coupled to the second component and rotate together, but also when the first component is coupled to the third component and the third component is coupled to the second component, the first component rotates with the second component. It means including the case of rotation as in .

Referring to below, that the first component 'independently rotates' from the second component means that the first component does not rotate integrally with the second component but rotates separately. It is meant to include even the case where the ratio of the rotational speed of the first component and the rotational speed of the second component is preset to be constant.

1 to 5, the laundry treatment device includes a cabinet 100 forming an outer shape. The laundry treatment apparatus includes an outer tub 110 (Outer Tub) disposed inside the cabinet 100. The outer tub 110 accommodates wash water therein. The laundry treatment apparatus includes an inner tub 120 disposed inside the outer tub 110. The inner tub 120 accommodates laundry therein. The inner tub 120 accommodates wash water therein. The laundry treatment apparatus includes a pulsator 122 rotatably disposed under the inner tub 120. The laundry treatment apparatus includes a blade 123 rotatably disposed between the pulsator 122 and the bottom surface of the inner tub 120 to pump wash water to the upper end of the inner tub 120 . The laundry treatment apparatus includes a pulsator 122 and a drive motor 130 generating rotational force of the blades 123 . The laundry treatment apparatus includes a power transmission unit 340 that transmits rotational force of the driving motor 130 to the pulsator 122 and the blade 123 .

The cabinet 100 may be provided to have a cylindrical shape of a rectangular parallelepiped. The cabinet 100 includes a base cabinet forming a lower side, a side cabinet forming front, rear, left and right sides, and an upper side having a laundry entrance hole so that laundry can enter and exit the laundry treatment machine. Includes top cover cabinet.

A door 101 is provided on the top of the cabinet 100 (the top cover cabinet) to put or take out laundry. The door 101 opens and closes the laundry access hole.

The outer tub 110 may have a cylindrical shape with an open upper side. The outer tub 110 is suspended and supported by the suspension bar 111 inside the cabinet 100 . The outer tub 110 stores the supplied wash water therein. The outer tub 110 is provided to dissolve and mix the supplied detergent into wash water. A drain is provided on the lower surface of the outer tub 110.

The inner tub 120 is rotatably installed inside the outer tub 110 to perform washing. The inner tub 120 receives power from the drive motor 130 and rotates. The inner tub 120 may selectively receive power from the drive motor 130 by intermittently intermittently using the clutch 137 . The inner tub 120 may be provided to be fixed during washing and rinsing and to rotate during spin-drying.

The inner tub 120 includes a side wall portion 120a forming a side surface of the inner tub 120 in a centrifugal direction. The side wall portion 120a has a plurality of dewatering holes. Washing water in the outer tub 110 flows into the side wall portion 120a through the plurality of spin-drying holes.

The inner tub 120 includes a balancer 125 mounted on the upper portion of the side wall portion 120a. The balancer 125 may be formed to extend along the circumference of the side wall portion 120a.

The inner tub 120 may include a base 121 coupled to a lower portion of the side wall portion 120a. The base 121 is disposed below the inner tub 120 to form at least a portion of the lower side of the inner tub 120 .

The base 121 forms the lower surface of the inner tube. An upper portion of the base 121 is coupled to a lower portion of the side wall portion 120a. The base 121 forms step portions 121b and 121c at a lower portion. The base 121 forms a first step portion 121b at a lower portion. The base 121 forms a second stepped portion 121c at a lower portion.

The blades 123 are all covered when viewed from the upper side of the pulsator 122 to the lower side. When viewed from top to bottom, the pulsator 122 is disposed to cover all of the blades 123. The upper side of the blade 123 is covered and cannot contact the laundry inside the inner tub 120 . Accordingly, the blade 123 does not receive a load due to contact with the laundry during rotation and receives a load due to pumping of wash water. The pulsator 122 is provided to be in contact with laundry.

The base 121 is formed by being recessed downward as a whole. The blade 123 is disposed in a space formed by being depressed to the lower side of the base 121 . The base 121 is recessed downward to form a space between the lower surface of the base 121 and the lower surface of the pulsator 122 . The blade 123 is disposed in the space between the lower surface of the base 121 and the lower surface of the pulsator 122 .

When viewing the base 121 from the top to the bottom, the central portion (the portion close to the center) forms the lowest upper side. The second stepped portion 121c and the first stepped portion 121b are sequentially disposed in the direction from the center of the base 121 to the edge. When going along the upper side of the base 121 from the center of the base 121 to the edge, the upper side of the base 121 is elevated by the second stepped portion 121c. When following the upper side of the base 121 in the edge direction from the second step portion 121c of the base 121, the upper side of the base 121 is elevated by the first step portion 121b. The first stepped portion 121b extends in the circumferential direction around the rotation shaft 132 . The second stepped portion 121c extends in the circumferential direction around the rotation shaft 132 .

In addition, the base 121 includes a connection surface 121d connecting the upper end of the first stepped portion 121b and the lower end of the second stepped portion 121c. The connecting surface 121b forms a surface facing upward. The connection surface 121d faces the lower side of the pulsator 122 . The connecting surface 121d is formed to extend along the circumferential direction.

In addition, the base 121 has a round portion 121a formed to be rounded in a downward direction at an upper portion. When looking at the base 121 from the upper side to the lower side, the round portion 121a is disposed at the edge of the base 121 . The round portion 121a extends in a circumferential direction around the rotation shaft 132 . When viewing the base 121 from the upper side to the lower side, the round portion 121a is formed with an inclination so that the height gradually decreases in the direction of the rotation axis 132 from the edge of the base 121. The edge of the round portion 121a is connected to the lower end of the side wall portion 120a.

Semicircular protrusions 121a1 face each other and protrude obliquely upward from the round portion 121a. The semicircular protrusions 121a1 are spaced apart at intervals in the circumferential direction.

The first step portion 121b is formed to surround the outer circumference of the pulsator 122 . When viewed from the upper side to the lower side, the blade 123 is disposed inside the circumference of the first stepped portion 121b. The first step portion 121b includes a vertical surface formed vertically to face the outer circumference of the pulsator 122 . The first stepped portion 121b is connected to the lower portion of the round portion 121a. The upper end of the first stepped portion 121b is connected to the inner circumferential portion of the round portion 121a (the distal end in the direction close to the axis of rotation). A constant gap is formed between the first stepped portion 121b and the outer circumferential portion of the pulsator 122 to avoid interference during rotation of the pulsator 122 . The gap between the first stepped portion 121b and the pulsator 122 is about 1 mm to prevent coins from entering the laundry.

The second stepped portion 121c is formed to surround the outer circumference of the blade 123. When viewed from the upper side to the lower side, the circumference of the second stepped portion 121c is disposed inside the circumference of the first stepped portion 121b. When viewed from the upper side to the lower side, the circumference of the second stepped portion 121c is disposed inside the circumference of the pulsator 122 . The second stepped portion 121c includes a vertical surface formed vertically to face the outer circumferential portion of the blade 123 . The lower end of the second stepped portion 121c is connected to the lower surface of the base 121 . The central portion of the base 121 forms the lowest surface. The lower portion of the second stepped portion 121c is connected to the outer circumferential portion of the central portion of the base 121 .

An opening is formed on the bottom surface of the base 121 . The base 121 forms the opening in the center. Water may flow into the base 121 from the outer lower portion of the base 121 through the opening of the base 121 .

The inner tube 120 includes a hub 124 coupled to a lower portion of the base 121 . The hub 124 is disposed on the lower side of the inner tub 120 . The hub 124 forms at least a portion of the lower surface of the inner tub 120 . The hub 124 is formed of a circular member that is relatively thicker than the side wall portion 120a and the base 121 . The hub 124 receives the rotational force of the drive motor 130 and transfers it to the base 121 and the side wall portion 120a. The hub 124 receives rotational force from an inner turbine connecting shaft 349c, which will be described later. The hub 124 has a plurality of wash water inlet holes 124a. The plurality of wash water inlet holes 124a are spaced apart from each other in the circumferential direction. Wash water stored in the outer tub 110 may flow into the lower portion of the inner tub 120 through the wash water inlet hole 124a of the hub.

The hub 124 is fixed to the lower side of the base 121. A hub 124 is disposed in the central portion of the base 121 . The washing water inlet hole 124a is illustrated in a fan shape, but is not limited thereto. A central coupling portion 124b coupled to the concentric shaft assembly 349 is provided at the center of the hub 124 . The central coupling portion 124b forms a hole penetrating in the vertical direction. The upper part of the inner turbine connecting shaft 349c is fixed to the central coupling part 124b. The pulsator connection shaft 349a passes through the hole of the central coupling part 124b. The blade connection shaft 349b passes through the hole of the central coupling part 124b. The jig connecting shaft 349d passes through the hole of the central coupling part 124b.

The laundry treatment apparatus includes a drive motor 130 disposed on the lower side of the outer tub 110 . The driving motor 130 may include a rotor and a stator. A motor casing 131 forming an exterior of the drive motor 130 is provided. The rotor and the stator may be disposed inside the motor casing 131 .

The laundry treatment device includes a washing shaft 132a rotated by a driving motor 130 . The laundry treatment device includes a spin-drying shaft 132b disposed around the washing shaft 132a. The washing shaft 132a is disposed passing through the spin-drying shaft 132b.

The stator is fixed inside the motor casing 131, and the rotor is rotated by electromagnetic interaction with the stator. The washing shaft 132a may be fixed to the rotor and rotate integrally with the rotor.

The laundry treatment device includes a clutch 137 that switches whether or not the spin-drying shaft 132b and the washing shaft 132a are integrally rotated. When the washing shaft 132a relatively rotates with respect to the dehydration shaft 132b, the pulsator 122 and the blade 123 are provided with relative rotation with respect to the inner tube 120. When the dehydration shaft 132b and the washing shaft 132a rotate integrally, the pulsator 122, the blade 123, and the inner tube 120 are integrally rotated. The clutch 137 may switch the spin-drying shaft 132b to come into close contact with the washing shaft so that the spin-drying shaft 132b rotates integrally with the washing shaft 132a. The clutch 137 may switch the spin-drying shaft 132b to be spaced apart from the washing shaft so that the washing shaft relatively rotates with respect to the spin-drying shaft 132b.

The driving motor 130 is supported by the outer tub 110 . The laundry treatment apparatus includes drive motor support members 135 and 136 fixed to the lower surface of the outer tub 110 to support the drive motor 130 .

The driving motor support members 135 and 136 include a fixing bracket 133 fixed to the lower side of the outer tub 110 . The fixing bracket 133 may be formed of a circular plate material as a whole. The fixing bracket 133 is coupled to the lower surface of the outer tub 110. The fixing bracket 133 is disposed above the drive motor 130 . The concentric shaft assembly 349 is disposed through the center of the fixing bracket 133.

The drive motor support members 135 and 136 include a connection bracket 134 fixed to the lower side of the fixing bracket 133 . The connecting bracket 134 supports the drive motor 130 . The connection bracket 134 may also be directly fixed to the lower surface of the outer tub 110. The connection bracket 134 is formed in a cylindrical shape in which the central portion is recessed from the upper side to the lower side as a whole. The connecting bracket 134 is disposed above the driving motor 130 . The washing shaft 132a is disposed through the center of the connection bracket 134. The clutch 137 may be disposed on the connecting bracket 134.

The drive motor support members 135 and 136 form a gear module arrangement space 340a therein. The driving motor support members 135 and 136 may accommodate gear modules 342 , 343 , 344 and 345 to be described later therein. The gear modules 342, 343, 344, and 345 are disposed in the gear module arrangement space 340a. The gear modules 342, 343, 344, and 345 are disposed between the washing shaft 132a and the concentric shaft assembly 349. The gear modules 342, 343, 344, and 345 are disposed between the spin-drying shaft 132b and the concentric shaft assembly 349. Gear modules (342, 343, 344, 345) are disposed in the inner space of the connection bracket (134). The gear modules 342 , 343 , 344 , and 345 are disposed below the fixing bracket 133 .

Wash shaft (132a) is disposed on the lower side of the outer tub (110). The washing shaft 132a is located on the central axis. The washing shaft 132a extends in the vertical direction. The washing shaft 132a is rotated by the driving motor 130 . The washing shaft 132a is disposed to protrude upward from the driving motor 130 .

The laundry treatment device includes a pulsator 122 provided at a lower portion of the inner tub 120 . The pulsator 122 is rotatably provided. The pulsator 122 is provided to be relatively rotatable with respect to the inner tube 120 . The pulsator 122 receives power from the driving motor 130 . The pulsator 122 is fixed to the top of the pulsator connecting shaft 349a. The pulsator 122 receives rotational force from the pulsator connecting shaft 349a. The pulsator 122 can rotate in forward and reverse directions. Washing effect is obtained by rubbing the laundry using the pulsator 122 .

The pulsator 122 includes a rotating plate 122a forming a circular plate and a plurality of protrusions 122c protruding upward from the upper surface of the rotating plate 122a. The pulsator 122 includes a central protrusion 122b protruding upward from the center of the rotating plate 122a.

A plurality of protrusions 122c are formed extending in a centrifugal direction from the central protrusion 122b. One end of the protrusion 122c is connected to the central protrusion 122b, and the other end of the protrusion 122c extends toward the outer circumference of the rotating plate 122a. The plurality of protrusions 122c are spaced apart from each other along the circumferential direction. An upper surface of the protrusion 122c may be formed to be curved. The plurality of protrusions 122c may form a water flow by rotating wash water flowing into the inside in forward and reverse directions of the pulsator.

An upper cap may be installed on top of the central protrusion 122b. The central protrusion 122b may protrude upward more than the plurality of protrusions 122c.

The pulsator 122 forms a plurality of through holes 122a1. A plurality of through holes 122a1 are formed in the rotating plate 122a. The through hole 122a1 allows washing water to pass through the pulsator 122 in the vertical direction. Washing water may flow to the lower portion of the inner tub 120 through the through hole 122a1.

A concave groove 122b1 recessed upward may be formed at the center of the lower surface of the pulsator 122 . A shaft support groove 122b2 recessed upwardly concave inside the concave groove 122b1 of the pulsator 122 may be formed. The upper end of the pulsator connecting shaft 349a is inserted into the shaft support groove 122b2. Accordingly, the rotational force of the pulsator connecting shaft 349a may be transmitted to the pulsator 122 .

The laundry treatment device includes a blade 123 provided on the lower side of the pulsator 122. The blade 123 is rotatably provided at the bottom of the pulsator 122 . The blade 123 is provided to be relatively rotatable with respect to the inner tube 120 . The blade 123 is provided to be relatively rotatable with respect to the pulsator 122 . The blade 123 may form a water flow of washing water by using centrifugal force. The blade 123 is provided to pump wash water to rise to the upper end of the inner tub. The blades 123 are all covered when viewed from the upper side of the pulsator 122 to the lower side.

The blade 123 includes a circular rotating plate 123a. The rotating plate 123a receives rotational force from the driving motor 130 . A shaft coupling portion 123c is provided at the center of the rotating plate 123c. An upper portion of the blade connection shaft 349b is fixed to the shaft coupling portion 123c. The blade 123 receives rotational force from the blade connecting shaft 349b.

The blade 123 includes a plurality of pumping wing parts 123b protruding downward from the lower surface of the rotating plate 123a. The pumping wing unit 123b rotates and pumps wash water filled in the lower part of the rotating plate 123a. The pumping wing portion 123b is provided in plurality. A plurality of pumping wing parts (123b) may be disposed spaced apart from each other in the circumferential direction. A plurality of pumping wings (123b) may be disposed protruding in a radial direction. A plurality of pumping wing parts (123b) are formed extending in the centrifugal direction. A plurality of pumping wing portions 123b are formed to extend radially toward the outer circumference of the rotating plate 123a.

The laundry treatment device includes a jig 346 disposed between the pulsator 122 and the inner tub 120 . The jig 346 is disposed on the lower side of the pulsator 122 and spaced apart from the pulsator 122 . The jig 346 is disposed between the pulsator 122 and the blade 123. The jig 346 is disposed on the upper side of the blade 123 and spaced apart from the blade 123 . The central portion of the jig 346 is disposed at a position spaced upward from the bottom surface of the inner tub 120, and the blade 123 is in the space between the central portion of the jig 346 and the bottom surface of the inner tub 120. are placed

The jig 346 is fixed to the inner tube 120 . The jig 346 is fixed to the base 121 of the inner tub 120. The jig 346 is fixed to the connection surface 121d of the inner tub 120. The circumferential side end of the jig 346 is fixed to the inner tub 120 .

The jig 346 includes a central coupling portion 346a to which an upper portion of the jig connecting shaft 349d is fixed. The central coupling part 346a is disposed at the center of the jig 346. The central coupling portion 346a forms a hole penetrating vertically, and the pulsator connecting shaft 349a passes through the hole of the central coupling portion 346a.

The jig 346 includes an extension portion 346b extending in a centrifugal direction from the central coupling portion 346a. A plurality of extensions 346b may be provided. The plurality of extensions 346b may be radially arranged. One end of the plurality of extensions 346b is connected to the central coupling part 346a, and the other ends of the plurality of extensions 346b are spaced apart from each other in the circumferential direction. The extension part 346b is supported by the inner tub 120, and the extension part 346b supports the central coupling part 346a. The jig connecting shaft 349d is supported by the central coupling portion 346a.

The centrifugal side end of the extension part 346b is fixed to the inner tub 120 by a fastening member 346b1 such as a screw. The lower surface of the side end in the distal direction of the extension part 346b is in contact with the connecting surface 121d. In a state in which the side end of the extension part 346b in the distal direction is in contact with the connection surface 121d, the extension part 346b may be fastened to the connection surface 121d by the fastening member 346b1.

The jig 346 includes a connection portion 346c connecting the plurality of extension portions 346b in the circumferential direction. The connecting portion 346c is disposed while connecting the two extension portions 346b. The connecting portion 346c is disposed on the side of the jig 346 in the distal direction.

The laundry treatment apparatus includes a wash water circulation module for guiding and spraying the wash water flowed by the blades 123 to the upper side of the inner tub 120 . The wash water circulation module may be provided in plurality. In this embodiment, the wash water circulation module is provided with two. The two wash water circulation modules are symmetrically disposed around the rotation axis of the inner tub 120 so as to face each other.

The wash water circulation module is coupled to the base 121 and includes a wash water discharge unit 127 through which the wash water flowed by the blade 123 flows. The wash water circulation module includes a circulation duct 126 provided on an inner surface of the side wall portion 120a and guiding wash water flowing into the wash water discharge unit 127 to the upper end of the side wall portion 120a. The wash water circulation module includes a filter unit 128 disposed at an upper end of the side wall portion 120a and spraying the wash water guided through the circulation duct 126 .

The circulation duct 126 is connected to the inner tub 120, raises wash water from the bottom of the inner tub 120 to the top of the inner tub 120, and re-supplies and circulates the water into the inner tub 120. A flow path 126a is provided. The circulation duct 126 may be mounted on the inner circumferential surface of the inner tub 120 in the form of a cover. The circulation duct 126 may be formed by bending so that a side surface in a centrifugal direction is open and a side surface opposite to the centrifugal direction and both sides in a circumferential direction are closed. Fastening protrusions are formed at both sides of the circulation duct 126 in the centrifugal direction of both sides in the circumferential direction, and the circulation duct 126 may be fastened to the inner circumferential surface of the inner tub 120 by the fastening protrusions. A circulation passage 126a, which is a space in which wash water can rise, is formed inside the circulation duct 126.

A wash water discharge unit 127 is connected to the lower portion of the circulation duct 126. The wash water discharge unit 127 provides a passage through which the wash water discharged by the blade 123 is received and moved to the circulation duct 126 . The wash water discharge unit 127 is disposed on the outer lower portion of the base 121 . The wash water discharge unit 127 includes a discharge body 127a which is formed in a round shape and gently bends and moves wash water from the blade 123 to the circulation duct 126 . The discharge body 127a gently bends and moves wash water from the centrifugal direction to the upward direction. A wash water outlet is formed in a direction opposite to the centrifugal direction at the lower portion of the discharge body 127a. The wash water outlet is connected to the inside of the base 121 and is disposed to face the outer circumference of the blade 123. The wash water pumped by the blade 123 is discharged from the base 121 in a centrifugal direction through the wash water outlet. Washing water flows into the discharge body 127a through the wash water outlet. The discharge body 127a forms a duct communication port formed upward in the upper portion. The upper side of the discharge body 127a is coupled to communicate with the circulation duct 126 through the duct communication hole. Wash water inside the discharge body 127a flows into the circulation passage 126a through the duct communication port. Wash water introduced into the discharge body 127a rises into the circulation duct 126 .

A filter unit 128 may be installed at an upper end of the circulation duct 126. The filter unit 128 includes a filter housing 128a and a filter provided inside the filter housing 128a to filter foreign substances. The filter may be formed in a net structure. The lower side of the filter housing 128a is connected to the upper end of the circulation duct 126. One side surface of the filter housing 128a forms an air outlet 128a1 opened in a direction toward the inside of the side wall portion 120a. The outlet 128a1 may be narrow in the vertical direction and long in the horizontal direction. The wash water pumped by the blade 123 sequentially passes through the inside of the wash water discharge unit 127, the inside of the circulation duct 126, and the inside of the filter housing 128a, and then passes through the outlet 128a1 to the side wall. (121a) can be injected into the interior.

The driving motor 130 provides power for rotating the pulsator 122 and the blade 123 with one motor rotational force. In addition, when the dehydration shaft 132b and the washing shaft 132a rotate integrally, the drive motor 130 integrally moves the pulsator 122, the blade 123, and the inner tub 120 with one motor rotational force. Provides power to rotate. The rotational force of the drive motor 130 is transmitted to the pulsator 122 and the blade 123 via the washing shaft 132a and the gear modules 342, 343, 344, and 345. The rotational force of the driving motor 130 may be transmitted to the inner tub 120 via the spin-drying shaft 132b and the gear modules 342, 343, 344, and 345.

Referring to FIGS. 6A to 8 , the power transmission unit 340 of the present invention will be described in more detail as follows.

The laundry treatment apparatus includes a power transmission unit 340 that transmits rotational force of the driving motor 130 to the pulsator 122 and the blade 123, respectively. When only the washing shaft 132a rotates without the spin-drying shaft 132b by the clutch 137, the power transmission unit 340 transmits the rotational force of the drive motor 130 to the pulsator 122 and the blade 123 forward to When the spin-drying shaft 132b rotates integrally with the washing shaft 132a by the clutch 137, the power transmission unit 340 transmits the rotational force of the driving motor 130 to the inner tub 120 as well.

The power transmission unit 340 includes gear modules 342 , 343 , 344 , and 345 that transmit rotational force of the washing shaft 132a to the concentric shaft assembly 349 . The power transmission unit 340 includes a concentric shaft assembly 349 that transmits rotational force of the gear modules 342 , 343 , 344 , and 345 to the pulsator 122 and the blade 123 , respectively. The power transmission unit 340 includes bearings 347a, 347b, 347c, 347d, 347e, and 347f disposed between a plurality of components rotating relative to each other. The power transmission unit 340 includes sealers 341a, 341b, and 341c that prevent wash water from penetrating into the inner tub 120 through gaps between the plurality of concentric shafts constituting the concentric shaft assembly 349.

The washing shaft 132a may rotate integrally with the rotor of the driving motor 130 . As another example, it is also possible that the washing shaft 132a receives the rotational force of the rotor of the driving motor 130 through a belt or a gear. In this embodiment, the lower portion of the washing shaft 132a is fixed to the rotor.

The washing shaft 132a rotates integrally with the sun gear 342. The upper part of the washing shaft 132a is fixed to the sun gear 342. The upper part of the washing shaft 132a is fixed to the central part of the sun gear 342.

The washing shaft 132a is disposed vertically passing through the center of the spin-drying shaft 132b. The washing shaft 132a passes through the lower portion of the carrier 344 and is disposed. The washing shaft 132a is disposed passing through the lower plate portion 344c of the connecting shaft of the carrier 344. The ring gear housing 345a has an open bottom, and the washing shaft 132a is inserted into the open bottom of the ring gear housing 345a. The washing shaft 132a is disposed passing through the lower part of the gearbox housing 345b. The washing shaft 132a is disposed passing through the gearbox lower housing 345b1.

When the spin-drying shaft 132b comes into close contact with the washing shaft 132a by the clutch 137, the spin-drying shaft 132b rotates integrally with the washing shaft 132a. The spin-dry shaft 132b rotates integrally with the gearbox housing 345b. The top of the dehydration shaft 132b is fixed to the gearbox housing 345b. The dehydration shaft 132b is fixed to the lower central portion of the gearbox housing 345b. The upper part of the dehydration shaft 132b is fixed to the gearbox lower housing 345b1.

In one embodiment with reference to FIG. 6A, the spin-dry shaft 132b rotates integrally with the ring gear 345 and the ring gear housing 345a. The upper part of the dehydration shaft 132b is fixed to the gearbox housing 345b, the gearbox housing 345b is fixed to the innerturb connecting shaft 349c, and the innerturb connecting shaft 349c is fixed to the innerturb 120 It is fixed. The jig 346 is fixed to the inner tube 120, the jig connecting shaft 349d is fixed to the jig 346, and the ring gear housing 345a is fixed to the jig connecting shaft 349d. Accordingly, the dehydration shaft 132b, the gearbox housing 345b, the innerturb connecting shaft 349c, the innerturb 120, the jig 346, the jig connecting shaft 349d, the ring gear housing 345a, and the ring All of the gears 345 rotate integrally.

In another embodiment with reference to FIG. 6B, the dewatering shaft 132b rotates integrally with the carrier 344'. The upper part of the dehydration shaft 132b is fixed to the gearbox housing 345b, the gearbox housing 345b is fixed to the innerturb connecting shaft 349c, and the innerturb connecting shaft 349c is fixed to the innerturb 120 It is fixed. The jig 346 is fixed to the inner tube 120, the jig connecting shaft 349d is fixed to the jig 346, and the carrier 344' is fixed to the jig connecting shaft 349d. Accordingly, the dewatering shaft 132b, the gearbox housing 345b, the inertub connecting shaft 349c, the innerturb 120, the jig 346, the jig connecting shaft 349d, and the carrier 344' are integrally formed. rotate with

The concentric shaft assembly 349 includes a pulsator connecting shaft 349a that rotates the pulsator 122 . The concentric shaft assembly 349 includes a blade connecting shaft 349b for rotating the blade 123 . The concentric shaft assembly 349 includes an inner turbine connecting shaft 349c that rotates the inner turbine 120 . The concentric shaft assembly 349 includes a jig connecting shaft 349d whose upper part is fixed to the jig 346.

The concentric shaft assembly 349 is disposed passing through the center of the lower surface of the outer tub 110 . The pulsator connecting shaft 349a is disposed passing through the lower surface of the outer tub 110. The blade connection shaft 349b is disposed penetrating the lower surface of the outer tub 110 . The inner tub connection shaft 349c is disposed passing through the lower surface of the outer tub 110 . The jig connecting shaft 349d passes through the lower surface of the outer tub 110 and is disposed.

The pulsator connecting shaft 349a and the blade connecting shaft 349b are provided to rotate concentrically. The pulsator connecting shaft 349a and the inertub connecting shaft 349c are provided to rotate concentrically. The blade connection shaft 349b and the inner turbine connection shaft 349c are provided to rotate concentrically. The jig connecting shaft 349d and the pulsator connecting shaft 349a are provided to rotate concentrically. The jig connecting shaft 349d and the blade connecting shaft 349b are rotated concentrically. The pulsator connecting shaft 349a, the blade connecting shaft 349b, the inertub connecting shaft 349c, the jig connecting shaft 349d, the sun gear 342, the carrier 344 and the ring gear 345 have one vertical axis. It is provided to enable concentric rotation as a standard.

The pulsator connecting shaft 349a and the blade connecting shaft 349b are rotatably provided independently of each other. The pulsator connecting shaft 349a and the inertub connecting shaft 349c are rotatably provided independently of each other. The blade connection shaft 349b and the inner turbine connection shaft 349c are provided to be rotatable independently of each other. The pulsator connecting shaft 349a and the jig connecting shaft 349d are rotatably provided independently of each other. The blade connecting shaft 349b and the jig connecting shaft 349d are rotatably provided independently of each other. The pulsator connecting shaft 349a rotates the pulsator 122 independently from the blade 123. The blade connecting shaft 349b rotates the blade 123 independently of the pulsator 122.

The concentric shaft assembly 349 extends in the vertical direction. The pulsator connecting shaft 349a extends in the vertical direction. The blade connecting shaft 349b extends in the vertical direction. The inertub connecting shaft 349c extends in the vertical direction. The jig connecting shaft 349d extends in the vertical direction.

The pulsator connection shaft 349a is disposed passing through the center of the inertub connection shaft 349c. The jig connection shaft 349d is disposed passing through the center of the inner turbine connection shaft 349c. The blade connection shaft 349b is disposed passing through the center of the inner turbine connection shaft 349c.

The pulsator connecting shaft 349a is disposed passing through the center of the blade connecting shaft 349b. The jig connecting shaft 349d is disposed passing through the center of the blade connecting shaft 349b.

The pulsator connecting shaft 349a is disposed passing through the center of the jig connecting shaft 349d.

The pulsator connecting shaft 349a vertically penetrates the center of the jig connecting shaft 349d. The jig connecting shaft 349d vertically penetrates the center of the blade connecting shaft 349b. The blade connection shaft 349b vertically penetrates the center of the inner turbine connection shaft 349c.

The blade connecting shaft 349b rotates integrally with the blade 123. An upper portion of the blade connecting shaft 349b is fixed to the blade 123. An upper portion of the blade connecting shaft 349b is fixed to the central portion of the blade 123 .

The blade connecting shaft 349b rotates integrally with the sun gear 342. The blade connecting shaft 349b rotates integrally with the sun gear housing 342a. The lower part of the blade connecting shaft 349b is fixed to the sun gear housing 342a. The lower part of the blade connecting shaft 349b is fixed to the central part of the sun gear housing 342a. The sun gear housing 342a is fixed to the sun gear 342 so as to rotate integrally with the sun gear 342 .

The blade connecting shaft 349b is disposed through the top of the gearbox housing 345b. The blade connecting shaft 349b is disposed passing through the gearbox upper housing 345b3.

The pulsator connecting shaft 349a rotates integrally with the pulsator 122. The upper part of the pulsator connecting shaft 349a is fixed to the pulsator 122. The upper part of the pulsator connecting shaft 349a is fixed to the lower central part of the pulsator 122.

The pulsator connecting shaft 349a rotates integrally with any one of the carrier 344 and the ring gear 345'. In this case, the other of the carrier 344' and the ring gear 345 is integrally and rotatably connected to the jig connecting shaft 349d.

In one embodiment with reference to Figure 6a, the pulsator connecting shaft (349a) is provided to rotate integrally with the carrier (344). The lower part of the pulsator connecting shaft 349a is fixed to the carrier 344. The pulsator connecting shaft 349a is disposed passing through the top of the ring gear housing 345a. The pulsator connecting shaft 349a is disposed passing through the ring gear upper housing 345a2. When the washing shaft 132a relatively rotates with respect to the spin-drying shaft 132b by the clutch 137, the pulsator connection shaft 349a has a rotational speed lower than the rotational speed of the washing shaft 132a and the washing shaft 132a rotates in the same direction as the direction of rotation of In this case, the lower portion of the jig connecting shaft 349d is fixed to the ring gear housing 345a, and the ring gear 345, the jig 346, the inner turbo 120, the inner turbo connecting shaft 349c, and the gear box housing (345b) and dehydration (132b) to maintain a stopped state. 'Rotation' and 'stop' mentioned here are relative movements with respect to the inner tube 120 .

In another embodiment with reference to FIG. 6B, the pulsator connecting shaft 349a is integrally rotated with the ring gear 345'. The lower part of the pulsator connecting shaft 349a is fixed to the ring gear housing 345a'. The pulsator connecting shaft 349a is disposed through the top of the carrier housing 344e'. The pulsator connecting shaft 349a is disposed through the carrier upper housing 344e2'. When the washing shaft 132a relatively rotates with respect to the spin-drying shaft 132b by the clutch 137, the pulsator connection shaft 349a has a rotational speed lower than the rotational speed of the washing shaft 132a and the washing shaft 132a rotates in the opposite direction to the direction of rotation. In this case, the lower portion of the jig connecting shaft 349d is fixed to the carrier housing 344e', and the carrier 344', the jig 346, the inner turbine 120, the inner turbo connecting shaft 349c, and the gear box housing (345b) and dehydration (132b) to maintain a stopped state. 'Rotation' and 'stop' mentioned here are relative movements with respect to the inner tube 120 .

The inertub connecting shaft 349c rotates integrally with the inertub 120 . An upper portion of the inner turbine connecting shaft 349c is fixed to the inner turbine 120 . The upper part of the inner turbine connecting shaft 349c is fixed to the lower central part of the inner turbine 120 . An upper portion of the inner turbine connecting shaft 349c is fixed to the hub 124 . An upper portion of the inner turbine connecting shaft 349c is fixed to the central coupling portion 124b of the hub 124.

The inertub connecting shaft 349c rotates integrally with the dewatering shaft 132b. The lower part of the inner turbine connecting shaft 349c is fixed to the gearbox housing 345b. The lower part of the inner turbine connecting shaft 349c is fixed to the gearbox upper housing 345b3. The top of the dehydration shaft 132b is fixed to the gearbox housing 345b. The upper part of the dehydration shaft 132b is fixed to the gearbox lower housing 345b1.

The jig connecting shaft 349d rotates integrally with the inner tube 120 . The upper part of the jig connecting shaft 349d is fixed to the jig 346. The upper part of the jig connecting shaft 349d is fixed to the central coupling part 346a of the jig 346. The jig 346 is fixed to the inner tube 120 . Accordingly, the jig connecting shaft 349d rotates integrally with the inner turbine connecting shaft 349c. The jig connecting shaft 349d rotates integrally with the gearbox housing 345b. The jig connecting shaft 349d rotates integrally with the spin-drying shaft 132b.

In one embodiment with reference to FIG. 6A , the jig connecting shaft 349d rotates integrally with the ring gear 345 . The jig connecting shaft 349d rotates integrally with the ring gear housing 345a. The lower part of the jig connecting shaft 349d is fixed to the ring gear housing 345a. The lower part of the jig connecting shaft 349d is fixed to the upper central part of the ring gear housing 345a. The lower part of the jig connecting shaft 349d is fixed to the upper housing 345a2 of the ring gear.

In another embodiment with reference to FIG. 6B, the jig connecting shaft 349d rotates integrally with the carrier 344'. The jig connecting shaft 349d rotates integrally with the carrier housing 344e'. The lower part of the jig connecting shaft 349d is fixed to the carrier housing 344e'. The lower portion of the jig connecting shaft 349d is fixed to the upper central portion of the carrier housing 344e'. The lower part of the jig connecting shaft 349d is fixed to the carrier upper housing 344a2'.

The pulsator connecting shaft 349a and the jig connecting shaft 349d are spaced apart from each other by bearings. The jig connecting shaft 349d and the blade connecting shaft 349b are spaced apart from each other by bearings. The blade connection shaft 349b and the inner turbine connection shaft 349c are spaced apart from each other by bearings.

The power transmission unit 340 includes a washing shaft 132a, a spin-drying shaft 132b, a pulsator connecting shaft 349a, a blade connecting shaft 349b, an inertub connecting shaft 349c and a jig connecting shaft 349d. It includes bearings 347a, 347b, 347c, 347d, 347e, and 347f that support each other so that they can rotate relative to each other.

A first bearing 347a is installed between the spin-dry shaft 132b and the driving motor support members 133 and 134, so that the spin-dry shaft 132b can rotate relative to the drive motor support members 133 and 134. A second bearing 347b is installed between the innerturb connecting shaft 349c and the drive motor support members 133 and 134, so that the innerturb connecting shaft 349c rotates relative to the drive motor support members 133 and 134. can do. A third bearing 347c is installed between the washing shaft 132a and the spin-drying shaft 132b, so that the washing shaft 132a can rotate relative to the spin-drying shaft 132b. A fourth bearing 347d is installed between the pulsator connecting shaft 349a and the jig connecting shaft 349d so that the pulsator connecting shaft 349a can rotate relative to the jig connecting shaft 349d. A plurality of fourth bearings 347d may be vertically spaced apart from each other. A fifth bearing 347e is installed between the jig connection shaft 349d and the blade connection shaft 349b, so that the blade connection shaft 349b can relatively rotate with respect to the jig connection shaft 349d. A plurality of fifth bearings 347e may be vertically spaced apart from each other. A sixth bearing 347f is installed between the blade connection shaft 349b and the innerturb connection shaft 349c, so that the blade connection shaft 349b can rotate relative to the innerturb connection shaft 349c. A plurality of sixth bearings 347f may be vertically spaced apart from each other.

The power transmission unit 340 includes sealers 341a, 341b, and 341c that block the inflow of washing water into gaps between the components of the concentric shaft assembly 349.

The first sealer 341a is installed between the pulsator connecting shaft 349a and the jig connecting shaft 349d to block the inflow of washing water into the gap between the pulsator connecting shaft 349a and the jig connecting shaft 349d. can The first sealer 341a is disposed on the upper end of the jig connecting shaft 349d. The first sealer 341a is disposed above the fourth bearing 347d. An air-filled groove 122b2 is formed in the lower central portion of the pulsator 122, and the upper end of the jig connecting shaft 349d is disposed in the groove 122b2 of the pulsator 122, so that the wash water Inflow into the gap between the pulsator connecting shaft 349a and the jig connecting shaft 349d may be blocked. The first sealer 341a may be disposed in a space filled with air by the groove 122b2 of the pulsator 122 .

The second sealer 341b is installed between the jig connecting shaft 349d and the blade connecting shaft 349b to block the inflow of wash water into the gap between the jig connecting shaft 349d and the blade connecting shaft 349b. . The second sealer 341b is disposed on the upper end of the blade connecting shaft 349b. The second sealer 341b is disposed above the fifth bearing 347e. An air-filled groove is formed in the lower central portion of the jig 346, and the upper end of the blade connecting shaft 349b is disposed in the groove of the jig 346, so that washing water can flow through the jig connecting shaft 349d and the blade. Inflow into the gap between the connecting shafts 349b may be blocked. The second sealer 341b may be disposed in a space filled with air by the groove of the jig 346 .

The third sealer 341c is installed between the blade connecting shaft 349b and the inertub connecting shaft 349c to block the inflow of washing water into the gap between the blade connecting shaft 349b and the inertub connecting shaft 349c. can The third sealer 341c is disposed on the upper end of the inner turbine connecting shaft 349c. The third sealer 341c is disposed above the sixth bearing 347f. The lower central portion of the blade 123 may be concave upward to form a space filled with air, and the upper end of the inner turbine connection shaft 349c is disposed within the space of the lower central portion of the blade 123 so that washing water is connected to the blade. Inflow into the gap between the shaft 349b and the inner turbine connecting shaft 349c may be blocked. The third sealer 341c may be disposed in the air-filled space at the lower central portion of the blade 123 .

The gear modules 342 , 343 , 344 , and 345 are disposed below the outer tub 110 . No other gears are disposed on the concentric shaft assembly 349 inside the inner tub 120 . Specifically, the pulsator connecting shaft 349a has a lower end connected to the gear modules 342, 343, 344, and 345 and an upper end connected to the pulsator 122, so that the gear modules 342, 343, 344, and 345 The rotational force of is directly transmitted to the pulsator 122. The blade connecting shaft 349b has a lower end connected to the gear modules 342, 343, 344, and 345 and an upper end connected to the blade 123 to directly apply rotational force of the gear modules 342, 343, 344, and 345 to the blades. forwarded to (123). The inner turbine connecting shaft 349c has a lower end connected to the gear modules 342, 343, 344, and 345 and an upper end connected to the inner turbine 120, so that the rotational force of the gear modules 342, 343, 344, and 345 It is directly transmitted to the inner tube 120.

The gear modules 342, 343, 344, and 345 relatively rotate the blade connection shaft 349b and the pulsator connection shaft 349a with respect to the jig connection shaft 349d. One of the ring gear 345 of the gear modules 342, 343, 344, and 345 and the carrier 244' are fixed to the jig connecting shaft 349d, and the other rotates relative to the jig connecting shaft 349d. are provided

The gear modules 342, 343, 344, and 345 transmit the rotational force of the washing shaft 132a to the pulsator connecting shaft 349a and the blade connecting shaft 349b, respectively. The gear modules 342, 343, 344, and 345 transmit the rotational force of the dewatering shaft 132b to the inner turbine connecting shaft 349c.

When the washing shaft 132a relatively rotates with respect to the spin-drying shaft 132b by the clutch 137, the gear modules 342, 343, 344, and 345 reduce the rotational speed of the washing shaft 132a to The rotational force of 132a) is transmitted to the pulsator 122. The gear modules 342, 343, 344, and 345 reduce the rotational speed by the gear ratio of the sun gear 342 and the ring gear 345, and transmit the rotational force of the washing shaft 132a to the pulsator connecting shaft 349a. . The gear modules 342, 343, 344, and 345 are provided so that the pulsator connection shaft 349a rotates at a rotational speed lower than the rotational speed of the washing shaft 132a. Torque of the pulsator 122 is increased as the rotational speed of the washing shaft 132a is reduced and transmitted to the pulsator 122.

When the washing shaft 132a relatively rotates with respect to the spin-drying shaft 132b by the clutch 137, the gear modules 342, 343, 344, and 345 maintain the rotational speed of the washing shaft 132a so that the washing shaft ( The rotational force of 132a) is transmitted to the blade 123. The gear modules 342, 343, 344, and 345 are provided so that the blade connecting shaft 349b rotates in the same rotational direction and at the same rotational speed as the washing shaft 132a.

In one embodiment according to FIGS. 6A and 9A, when the washing shaft 132a relatively rotates with respect to the spin-drying shaft 132b by the clutch 137, the gear modules 342, 343, 344, and 345 are pulsators ( 122) and the blade 123 transmits the rotational force of the washing shaft 132a to the pulsator 122 and the blade 123 so that they rotate in the same direction.

In another embodiment according to FIGS. 6B and 9B, when the washing shaft 132a relatively rotates with respect to the spin-drying shaft 132b by the clutch 137, the gear modules 342, 343, 344, and 345 are pulsators ( 122) and the blade 123 transmits the rotational force of the washing shaft 132a to the pulsator 122 and the blade 123 so that they rotate in opposite directions. In this case, the relative rotation speed of the pulsator 122 and the blade 123 is increased, and a more complex water flow may be formed.

The gear modules 342, 343, 344, and 345 according to an embodiment with reference to FIG. 6A are described in more detail as follows. According to one embodiment of the present invention, the blade connecting shaft 349c rotates integrally with the sun gear 342. In addition, the lower portion of the pulsator connecting shaft 349b is fixed to the carrier 344, and the pulsator connecting shaft 349b rotates integrally with the carrier 344. In addition, the lower portion of the jig connecting shaft 349d is fixed to the ring gear housing 345a, and the jig connecting shaft 349d is rotatably connected integrally with the ring gear 345 and the ring gear housing 345a. In addition, the lower part of the inner turbine connecting shaft 349c and the upper part of the dehydration shaft 132b are fixed to the gearbox housing 345b, and the dewatering shaft 132b is connected to the gearbox housing 345b and the innerturb connecting shaft 349c. , The inertub 120, the jig 346, the jig connecting shaft 349d, the ring gear housing 345a, and the ring gear 345 are integrally and rotatably connected.

The gear modules 342, 343, 344, and 345 include a sun gear 342 integrally rotating with the washing shaft 132a. The gear modules 342, 343, 344, and 345 include a sun gear housing 342a that rotates integrally with the sun gear. The sun gear 342 and the sun gear housing 342a rotate integrally with the blade connecting shaft 349c. The gear modules 342 , 343 , 344 , and 345 include a plurality of planetary gears 343 that rotate while being engaged with the outer circumferential surface of the sun gear 342 . The gear modules 342 , 343 , 344 , and 345 include a carrier 344 in which a plurality of planet gear rotation shafts 344a penetrating central portions of the plurality of planet gears 343 are connected to each other. The gear modules 342 , 343 , 344 , and 345 include a ring gear 345 that is inscribed with the plurality of planetary gears 343 and engaged with them. The gear modules 342, 343, 344, and 345 include a ring gear housing 345a to which the ring gear 345 is fixed to an inner surface. The gear modules 342, 343, 344, and 345 include a gearbox housing 345b to which an upper portion of the dehydration shaft 132b is fixed and a lower portion of the inner turbine connecting shaft 349c.

A lower groove recessed upward may be formed in the lower central portion of the sun gear 342 . The sun gear 142 is disposed below the connecting shaft upper plate portion 344b of the carrier 344. The sun gear 142 may be rotatably coupled to the connecting shaft upper plate portion 344b. Although not shown in the drawings, for example, a protrusion for rotation protrudes from one center of the sun gear 142-1 and the connecting shaft upper plate 344b toward the other center, and A groove into which a rotational protrusion is inserted may be formed.

The upper part of the washing shaft 132a is fixed to the sun gear 342. To transmit power to the washing shaft 132a, a plurality of protrusions such as serrations may be formed along the outer circumferential surface of the upper end of the washing shaft 132a. A plurality of grooves formed to engage with the serration protrusions may also be formed on the inner circumferential surface of the lower groove of the sun gear 342 . An upper end of the washing shaft 132a may be inserted into and coupled to the center of the sun gear 342 . A plurality of gear teeth are formed along the outer circumferential surface of the sun gear 342 . As another example, the sun gear 342 and the washing shaft 132a may be integrally formed.

The sun gear 342 is disposed at the center of the plurality of planetary gears 343. The sun gear 342 is disposed inside the carrier 344 . The sun gear 342 is disposed between the connecting shaft upper plate portion 344b and the connecting shaft lower plate portion 344c of the carrier 344 . The sun gear 342 is disposed inside the ring gear housing 345a. The sun gear 342 is disposed inside the sun gear housing 342a. The sun gear 342 is disposed inside the gearbox housing 345b.

The sun gear housing 342a accommodates the ring gear housing 345a therein. The sun gear housing 342a accommodates the carrier 344 therein. The sun gear housing 342a accommodates the sun gear 342 and the plurality of planetary gears 343 therein. The sun gear housing 342a surrounds the outside of the sun gear 342 and forms an inner space between the inner surface of the sun gear housing 342a and the sun gear 342 . In the inner space of the sun gear housing 342a, a plurality of planetary gears 343, a carrier 344, a ring gear 345, and a ring gear housing 345a are rotatably disposed.

The sun gear housing 342a rotates integrally with the sun gear 342 . The sun gear housing 342a rotates integrally with the washing shaft 132a. The sun gear housing 342a is fixed to at least one of the sun gear 342 and the washing shaft 132a.

The lower part of the blade connecting shaft 349b is fixed to the sun gear housing 342a. A protrusion protruding upward may be formed from an upper center portion of the sun gear housing 342a, and an insertion groove recessed downward may be formed on an upper surface of the protrusion portion of the sun gear housing 342a. To transmit power to the sun gear housing 342a, a plurality of protrusions such as serrations may be formed along the outer circumferential surface of the lower end of the blade connecting shaft 349b. A plurality of grooves formed to engage with the serration protrusions may also be formed on the inner circumferential surface of the insertion groove of the sun gear housing 342a. The lower end of the blade connecting shaft 349b may be inserted into the insertion groove of the sun gear housing 342a.

The sun gear housing 342a includes a sun gear lower housing 342a1 forming a lower surface. The center of the sun gear lower housing 342a1 is fixed to at least one of the sun gear 342 and the washing shaft 132a. The rotational force of the washing shaft 132a is transmitted to the lower housing 342a1 of the sun gear.

The sun gear housing 342a includes a sun gear side housing 342a2 forming an outer circumferential surface. The lower part of the sun gear side housing 342a2 is fixed to the sun gear lower housing 342a1. The sun gear side housing 342a2 is fixed to the edge of the sun gear lower housing 342a1. The rotational force of the sun gear lower housing 342a1 is transmitted to the sun gear side housing 342a2.

The sun gear housing 342a includes a sun gear upper housing 342a3 forming an upper side surface. The sun gear upper housing 342a3 is fixed to the sun gear side housing 342a2. An edge of the sun gear upper housing 342a3 is fixed to an upper portion of the sun gear side housing 342a2. The rotational force of the sun gear side housing 342a2 is transmitted to the sun gear upper housing 342a3.

The protruding portion of the sun gear housing 342a is formed in the central portion of the sun gear upper housing 342a3. The lower end of the pulsator connecting shaft 349a is fixed to the sun gear upper housing 342a3. The rotational force of the sun gear upper housing 342a3 is transmitted to the pulsator connecting shaft 349a.

The plurality of planetary gears 343 are coupled to the outer circumferential surface of the sun gear 342 to rotate. Each planetary gear 343 has a plurality of gear teeth on its outer circumferential surface. The plurality of planetary gears 343 are spaced apart from each other along the circumferential direction. The planetary gear 343 may be connected to the carrier 344 through the planetary gear rotating shaft 344a. The planetary gear rotating shaft 344a passes through the center of the planetary gear 343 vertically. In the planetary gear 343, the gear teeth are engaged with each other between the sun gear 342 and the ring gear 345. The planetary gear 343 is provided to be able to rotate. The planetary gear 343 is provided so as to revolve around the sun gear 342 . When the carrier 344 rotates, the plurality of planet gears 343 revolve around the sun gear 342 together with the carrier 344 .

The planetary gear 343 is disposed inside the carrier 344. The planetary gear 343 is disposed between the connecting shaft upper plate portion 344b and the connecting shaft lower plate portion 344c. The planetary gear 343 is disposed inside the ring gear housing 345a. The planetary gear 343 is disposed inside the sun gear housing 342a. The planetary gear 343 is disposed between the upper sun gear housing 342a3 and the lower sun gear housing 342a1. The planetary gear 343 is disposed inside the gearbox housing 345b. The planetary gear 343 is disposed between the gearbox upper housing 345b3 and the gearbox lower housing 345b1.

The carrier 344 includes a plurality of planetary gear rotating shafts 344a penetrating the plurality of planetary gears 343 vertically, respectively. The carrier 344 is provided such that a plurality of planetary gear rotating shafts 344a passing through central portions of the plurality of planetary gears 343 are connected to each other. The carrier 344 supports the upper and lower ends of the planetary gear rotating shaft 344a.

The carrier 344 includes a connecting shaft upper plate portion 344b fixed to an upper end of the plurality of planetary gear rotating shafts 344a. The upper end of the planetary gear rotating shaft 344a is fixed to the connecting shaft upper plate 344b. A sun gear 342 and a plurality of planetary gears 343 are disposed below the connecting shaft upper plate portion 344b. The connecting shaft upper plate portion 344b may be formed in a plate shape disposed on a horizontal surface as a whole. The lower part of the pulsator connecting shaft 349b is fixed to the carrier 344. The lower part of the pulsator connecting shaft 349b is fixed to the upper connecting shaft 344b.

The carrier 344 includes a connecting shaft lower plate portion 344c fixed to the lower ends of the plurality of planetary gear rotating shafts 344a. The lower end of the planetary gear rotating shaft 344a is fixed to the connecting shaft lower plate 344c. A sun gear 342 and a plurality of planetary gears 343 are disposed on the upper side of the connecting shaft lower plate portion 344c. The connecting shaft lower plate portion 344c may be formed in a plate shape disposed on a horizontal surface as a whole. A hole may be formed in the center of the lower plate portion 344c of the connecting shaft. The washing shaft 132a may pass through the hole of the connecting shaft lower plate 344c.

The carrier 344 includes a reinforcing portion 344f in which the plurality of planetary gears 343 are disposed in gaps spaced apart from each other. The reinforcement part 344f connects and fixes the connecting shaft upper plate part 344b and the connecting shaft lower plate part 344c to each other.

The ring gear 345 is coupled to the plurality of planetary gears 343 by inscribed contact at the same time. The ring gear 345 includes a plurality of gear teeth formed along the inner circumferential surface to engage with the gear teeth of the outer circumferential surface of the plurality of planetary gears 343 . The ring gear 345 includes a plurality of gear teeth formed along the inner circumferential surface so as to be simultaneously engaged with the gear teeth of the outer circumferential surface of the plurality of planetary gears 343 .

The ring gear 345 is fixed to the ring gear housing 345a. The ring gear 345 is fixed to the inner surface of the ring gear housing 345a. The lower part of the jig connecting shaft 349d is fixed to the ring gear housing 345a. The carrier 344 is accommodated inside the ring gear housing 345a.

The ring gear housing 345a includes a ring gear side housing 345a1 forming an outer peripheral surface. The ring gear 345 is disposed on the side opposite to the distal direction of the ring gear side housing 345a1. The ring gear 345 is disposed on the inner surface of the housing 345a1 on the side of the ring gear.

The ring gear housing 345a includes a ring gear upper housing 345a2 forming an upper side surface. The ring gear side housing 345a1 is fixed to the ring gear upper housing 345a2. The lower part of the jig connecting shaft 349d is fixed to the ring gear upper housing 345a2. The pulsator connecting shaft 349a is disposed passing through the upper surface of the ring gear housing 345a. The pulsator connecting shaft 349a is disposed passing through the center of the ring gear upper housing 345a2.

A protrusion protruding upward from the center of the ring gear upper housing 345a2 may be formed, and a hole passing vertically through the center of the protrusion of the ring gear upper housing 345a2 may be formed. The protrusion of the ring gear upper housing 345a2 may be formed in a pipe shape. The pulsator connecting shaft 349a is disposed passing through the hole of the ring gear upper housing 345a2.

The gearbox housing 345b accommodates the sun gear housing 342a therein. The gearbox housing 345b accommodates the ring gear housing 345a therein. The gearbox housing 345b accommodates the carrier 344 therein. The gearbox housing 345b accommodates a sun gear 342 and a plurality of planetary gears 343 therein. The gearbox housing 345b surrounds the outside of the sun gear housing 342a, and the sun gear housing 342a is rotatably disposed inside the gearbox housing 345b. The gearbox housing 345b forms an inner space, and the sun gear housing 342a, the plurality of planetary gears 343, the carrier 344, and the sun gear 342 rotate in the inner space of the gearbox housing 345b. placed possible.

The gearbox housing 345b rotates integrally with the spin-drying shaft 132b. The gearbox housing 345b is fixed to the top of the dehydration shaft 132b.

The inertub connecting shaft 349c rotates integrally with the gearbox housing 345b. The lower part of the inner turbine connecting shaft 349c is fixed to the gearbox housing 345b. A protrusion protruding upward from the upper central portion of the gearbox housing 345b may be formed, and an insertion hole vertically penetrating the center of the protrusion of the gearbox housing 345b may be formed. For power transmission of the gearbox housing 345b, a plurality of protrusions such as serrations may be formed along the outer circumferential surface of the lower end of the inner turbine connecting shaft 349c. A plurality of grooves formed to engage with the serration protrusions may also be formed on the inner circumferential surface of the insertion hole of the gearbox housing 345b. The lower end of the inner turbine connecting shaft 349c may be inserted into the insertion hole of the gearbox housing 345b. The blade connecting shaft 349b is disposed passing through the insertion hole of the gearbox housing 345b. The jig connecting shaft 349d passes through the insertion hole of the gearbox housing 345b and is disposed. The pulsator connecting shaft 349a is disposed passing through the insertion hole of the gearbox housing 345b.

The gearbox housing 345b includes a gearbox lower housing 345b1 forming a lower surface. The center of the gearbox lower housing 345b1 is fixed to the spin-drying shaft 132b. The rotational force of the spin-drying shaft 132b is transmitted to the gear box lower housing 345b1.

The gearbox housing 345b includes a gearbox side housing 345b2 forming an outer circumferential surface. The lower part of the gearbox side housing 345b2 is fixed to the gearbox lower housing 342b1. The gearbox side housing 345b2 is fixed to the edge of the gearbox lower housing 342b1. The rotational force of the gearbox lower housing 342b1 is transmitted to the gearbox side housing 345b2.

The gearbox housing 345b includes a gearbox upper housing 342b3 forming an upper surface. The gearbox upper housing 342b3 is fixed to the gearbox side housing 345b2. The edge of the gearbox upper housing (342b3) is fixed to the top of the gearbox side housing (345b2). The rotational force of the gearbox side housing 345b2 is transmitted to the gearbox upper housing 342b3.

The protruding portion of the gearbox housing 345b is formed in the central portion of the gearbox upper housing 342b3. The lower end of the inertub connecting shaft 349c is fixed to the gearbox upper housing 342b3. The rotational force of the gearbox upper housing 342b3 is transmitted to the inner turbine connecting shaft 349c.

The gear modules 342, 343, 344', and 345 according to another embodiment with reference to FIG. 6B will be described in detail as follows. According to another embodiment of the present invention, the blade connecting shaft 349c rotates integrally with the sun gear 342. In addition, the lower part of the pulsator connecting shaft 349b is fixed to the ring gear housing 345a', and the pulsator connecting shaft 349b rotates integrally with the ring gear 345'. In addition, the lower portion of the jig connecting shaft 349d is fixed to the carrier housing 344e', and the jig connecting shaft 349d is integrally and rotatably connected to the carrier 344'. In addition, the lower part of the inner turbine connecting shaft 349c and the upper part of the dehydration shaft 132b are fixed to the gearbox housing 345b, and the dewatering shaft 132b is connected to the gearbox housing 345b and the innerturb connecting shaft 349c. , The inertub 120, the jig 346, the jig connecting shaft 349d, and the carrier 344' are integrally and rotatably connected.

The gear modules 342, 343, 344', and 345' include a sun gear 342 integrally rotating with the washing shaft 132a. The gear modules 342, 343, 344', and 345' include a sun gear housing 342a that rotates integrally with the sun gear. The sun gear 342 and the sun gear housing 342a rotate integrally with the blade connecting shaft 349c. The gear modules 342, 343, 344', and 345' include a plurality of planetary gears 343 that rotate while being engaged with the outer circumferential surface of the sun gear 342. The gear modules 342, 343, 344', 345' include a carrier 344' provided to connect a plurality of planetary gear rotating shafts 344a' passing through the center of each of the plurality of planetary gears 343 to each other. do. The gear modules 342, 343, 344', and 345' include a ring gear 345' that is inscribed with and meshed with the plurality of planetary gears 343. The gear modules 342, 343, 344', and 345' include a ring gear housing 345a' to which the ring gear 345' is fixed to an inner surface. The gear modules 342, 343, 344', and 345' include a gearbox housing 345b to which an upper portion of the dewatering shaft 132b is fixed and a lower portion of the inertub connecting shaft 349c is fixed. The carrier 344' includes a carrier housing 344e' that accommodates the ring gear housing 345a' therein.

Hereinafter, in another embodiment of the present invention, differences from the above embodiment of the present invention will be mainly described. Elements of the other embodiment of FIG. 6B using the same reference numerals as those of the embodiment of FIG. 6A are elements common to one embodiment and other embodiments of the present invention, and thus duplicate descriptions are omitted.

The planetary gear 343 is provided to be able to rotate. Based on the inertub 120, the planetary gear 343 does not revolve around the sun gear 342 but is provided to rotate only. With the inertub 120 as a reference, the carrier 344' is stopped so that the ring gear 345' is rotated.

The carrier 344' includes a connecting shaft upper plate portion 344b' fixed to an upper end of the plurality of planetary gear rotating shafts 344a'. Unlike the above embodiment, the lower part of the pulsator connecting shaft 349a is not fixed to the upper connecting shaft 344b'. The connecting shaft upper plate portion 344b' is disposed inside the ring gear housing 345a'.

The carrier 344' includes a connecting shaft lower plate portion 344c' fixed to the lower ends of the plurality of planetary gear rotation shafts 344a'.

The carrier 344' includes a carrier housing 344e' that accommodates the ring gear housing 345a' therein. The carrier housing 344e' is fixed to the connecting shaft lower plate 344c'. The carrier housing 344e' includes a carrier side housing 344e1' extending upward from the distal side end of the connecting shaft lower plate portion 344c'. The carrier housing 344e' includes a carrier upper housing 344e2' extending in a centrifugal direction from an upper end of the carrier side housing 344e1'. The connecting shaft lower plate portion 344c' is fixed to the carrier side housing 344e1'. The carrier side housing 344e1' is fixed to the carrier upper housing 344e2'. The lower part of the jig connecting shaft 349d is fixed to the carrier 344'. The lower part of the jig connecting shaft 349d is fixed to the carrier housing 344e'. The lower part of the jig connecting shaft 349d is fixed to the upper housing 344e2' of the carrier.

The ring gear 345' is fixed to the ring gear housing 345a'. The ring gear housing 345a' includes a ring gear side housing 345a1' forming an outer peripheral surface. The ring gear 345' is disposed on the side opposite to the distal direction of the ring gear side housing 345a1'.

The ring gear housing 345a' includes a ring gear upper housing 345a2' forming an upper side surface. The lower part of the pulsator connecting shaft 349b is fixed to the ring gear upper housing 345a2'.

A protrusion protruding upward from the center of the ring gear upper housing 345a2' may be formed, and a groove depressed downward may be formed at the center of the upper end of the protrusion of the ring gear upper housing 345a2'. The protrusion of the ring gear upper housing 345a2' may be formed in a pipe shape. The pulsator connecting shaft 349b may be inserted and fixed into the groove of the ring gear upper housing 345a2'.

Referring back to FIG. 1, the movement path of water is as follows.

Wash water is supplied into the outer tub 110 through a wash water supply hose connected to the wash water supply unit. At this time, the detergent may be supplied into the outer tub 110 together with the washing water from the detergent supply unit.

It flows between the inner tub 120 supplied to the inside of the outer tub 110 and the outer tub 110, and is stored in the lower portion of the outer tub 110.

Wash water supplied to the lower portion of the outer tub 110 is introduced into the base 121 through the wash water inlet hole 124a of the hub 124. The wash water flowing into the base is pumped by the blade 123, passes through the wash water discharge unit 127 and the circulation duct 126, and passes through the outlet 128a1 of the filter housing 128a to the inner tube 120. blown out inside

Accordingly, it is easy to wet the laundry while the wash water sprayed to the upper part of the inner tub 120 spreads widely. In addition, since washing water is evenly sprayed evenly on laundry floating in the washing water of the innerturb, washing performance is improved by uniformly penetrating detergent into the laundry.

Washing water that has soaked the laundry moves to the space between the bottom surface of the inner tub 120 and the pulsator 122 through the through hole 122a1 of the pulsator 122, or to the first step of the base 121 It permeates down through the gap between (121b) and the outer periphery of the pulsator 122 and moves to the space between the bottom surface of the inner tub 120 and the pulsator 122.

The wash water that has moved to the space between the bottom surface of the inertub 120 and the pulsator 122 is pumped again by the blade 123 .

In one embodiment with reference to FIG. 9A, in a state in which the washing shaft 132a is set to relatively rotate with respect to the spin-drying shaft 132b by the clutch 137, rotational force transmission of the driving motor 130 will be described in detail as follows: Same as

In this case, the inner turbine connecting shaft 349c, the jig connecting shaft 349d, the gearbox housing 345b, the ring gear housing 345a, the ring gear 345, and the dehydration shaft 132b for the innerturb 120 There is no relative rotational motion of Also, in this case, the pulsator 122, the blade 123, the pulsator connecting shaft 349a, the blade connecting shaft 349b, the carrier 344, the planet gear 343, the sun gear for the inner tub 120 342, the sun gear housing 342a, and the washing shaft 132a perform relative rotational motion.

Rotational force generated by the driving motor 130 is transmitted from the washing shaft 132a to the sun gear 342 and the sun gear housing 342a. The rotational force of the sun gear housing 342a is transmitted to the blade connecting shaft 349b, and the rotational force of the blade connecting shaft 349b is transmitted to the blade 123.

The carrier 344 rotates at a rotational speed lower than the rotational speed of the sun gear 342 by the gear ratio of the sun gear 342 and the ring gear 345 . The rotational force of the carrier 344 is transmitted to the pulsator connecting shaft 349a, and the rotational force of the pulsator connecting shaft 349a is transmitted to the pulsator 122.

When the sun gear 342 and the sun gear housing 342a rotate in the first direction, the planetary gear 343 rotates in the second direction and the carrier 344 rotates in the first direction. When the sun gear 342 and the sun gear housing 342a rotate at the first rotational speed w1, the planetary gear 343 may rotate at a second rotational speed w2 higher than the first rotational speed w1. . When the sun gear 342 and the sun gear housing 342a rotate at the first rotational speed w1, the carrier 344 rotates at a third rotational speed w3 lower than the first rotational speed w1.

The blade connecting shaft 349b coupled to the sun gear housing 342a and the blade 123 coupled to the blade connecting shaft 349b rotate integrally with the sun gear housing 342a. The blade 123 rotates at the same rotational speed w1 as the sun gear housing 342a.

The pulsator connecting shaft 349a coupled to the carrier 344 and the pulsator 122 coupled to the pulsator connecting shaft 349a rotate integrally with the carrier 344 . The pulsator 122 rotates at the same rotation speed w3 as the carrier 344 .

In another embodiment with reference to FIG. 9B, in a state in which the washing shaft 132a is set to relatively rotate with respect to the spin-drying shaft 132b by the clutch 137, rotational force transmission of the drive motor 130 will be described in detail as follows: Same as

In this case, the inner turbine connecting shaft 349c, the jig connecting shaft 349d, the gearbox housing 345b, the carrier 344', the planetary gear 343' and the spin shaft 132b for the innerturb 120 There is no relative rotational motion of Also, in this case, the pulsator 122, the blade 123, the pulsator connecting shaft 349a, the blade connecting shaft 349b, the ring gear housing 345a', and the ring gear 345 for the inner tube 120 '), the sun gear 342, the sun gear housing 342a, and the washing shaft 132a perform a relative rotational motion.

Rotational force generated by the driving motor 130 is transmitted from the washing shaft 132a to the sun gear 342 and the sun gear housing 342a. The rotational force of the sun gear housing 342a is transmitted to the blade connecting shaft 349b, and the rotational force of the blade connecting shaft 349b is transmitted to the blade 123.

The ring gear 345' rotates at a rotational speed lower than the rotational speed of the sun gear 342 due to the gear ratio between the sun gear 342 and the ring gear 345'. The rotational force of the ring gear 345' is transmitted to the pulsator connecting shaft 349a, and the rotational force of the pulsator connecting shaft 349a is transmitted to the pulsator 122.

When the sun gear 342 and the sun gear housing 342a rotate in the first direction, the planetary gear 343' rotates in the second direction and the ring gear 345' rotates in the second direction. When the sun gear 342 rotates at the first rotational speed w1, the planetary gear 343 may rotate at a second rotational speed w2 higher than the first rotational speed w1. When the sun gear 342 rotates at the first rotational speed w1, the carrier 344 rotates at a third rotational speed w3 lower than the first rotational speed w1.

The blade connecting shaft 349b coupled to the sun gear housing 342a and the blade 123 coupled to the blade connecting shaft 349b rotate integrally with the sun gear housing 342a. The blade 123 rotates at the same rotational speed w1 as the sun gear housing 342a.

The pulsator connecting shaft 349a coupled to the ring gear housing 345a' and the pulsator 122 coupled to the pulsator connecting shaft 349a rotate integrally with the ring gear 345'. The pulsator 122 rotates at the same rotational speed w3 as that of the ring gear 345'.

Referring to FIG. 10, in a state in which the spin-drying shaft 132b is set to rotate integrally with the washing shaft 132a by the clutch 137, the transmission of rotational force of the driving motor 130 will be described in detail.

In this case, the pulsator 122, the blade 123, the pulsator connecting shaft 349a, the blade connecting shaft 349b, the innerturb connecting shaft 349c, and the jig connecting shaft 349d for the innerturb 120 , gearbox housing 345b, ring gear housing 345a, 345a', ring gear 345, 345', carrier 344, 344', planetary gear 343, sun gear 342, washing shaft 132a ), and there is no relative rotational movement of the spin-dry shaft 132b.

The rotational force generated by the driving motor 130 is transmitted from the washing shaft 132a to the spin-drying shaft 132b. The rotational force of the washing shaft 132a is transmitted to the sun gear 342 and the sun gear housing 342a. The rotational force of the sun gear housing 342a is transmitted to the blade connecting shaft 349b, and the rotational force of the blade connecting shaft 349b is transmitted to the blade 123.

The rotational force of the dewatering shaft 132b is transmitted to the gearbox housing 345b. The rotational force of the gearbox housing 345b is transmitted to the innerturb connecting shaft 349c, and the rotational force of the innerturb connecting shaft 349c is transmitted to the innerturb 120. The rotational force of the inner tub 120 is transmitted to the jig 346, and the rotational force of the jig 346 is transmitted to the jig connecting shaft 349d.

In the above embodiment, the rotational force of the jig connecting shaft 349d is transmitted to the ring gear housing 345a. Since the sun gear 342 and the ring gear 345 rotate at the same rotational speed w1, the planetary gear 343 does not rotate and the carrier 344 rotates at the same rotational speed w1 as the sun gear 342. The rotational force of the carrier 344 is transmitted to the pulsator connecting shaft 349a, and the rotational force of the pulsator connecting shaft 349a is transmitted to the pulsator 122.

In the above other embodiment, the rotational force of the jig connecting shaft 349d is transmitted to the carrier 344'. Since the sun gear 342 and the carrier 344' rotate at the same rotational speed w1, the planetary gear 343' does not rotate and the ring gear 345' rotates at the same rotational speed w1 as the sun gear 342. rotate The rotational force of the ring gear 345' and the ring gear housing 345a' is transmitted to the pulsator connection shaft 349a, and the rotational force of the pulsator connection shaft 349a is transmitted to the pulsator 122.

In the above and other embodiments, when the sun gear 342 and the sun gear housing 342a rotate in the first direction, the planetary gears 343 and 343' do not rotate and the carriers 344 and 344' rotate in the first direction. rotate in one direction When the sun gear 342 and the sun gear housing 342a rotate at the first rotational speed w1, the carriers 344 and 344' rotate at the same rotational speed as the sun gear 342 and the sun gear housing 342a at the first rotational speed. (w1) rotates. When the sun gear 342 and the sun gear housing 342a rotate at the first rotational speed w1, the ring gears 345 and 345' rotate at the same rotational speed as the sun gear 342 and the sun gear housing 342a. It rotates at speed w1. The blade connecting shaft 349b coupled to the sun gear housing 342a and the blade 123 coupled to the blade connecting shaft 349b rotate integrally with the sun gear housing 342a. The blade 123 rotates at the same rotation speed w1 as the sun gear 342 and the sun gear housing 342a. The pulsator connecting shaft 349a and the jig connecting shaft 349d coupled to any one of the carriers 344 and 344' and the ring gear housings 345a and 345a', respectively, are the carriers 344 and 344' and the ring gear It rotates at the same rotational speed w1 as the housings 345a and 345a'. The pulsator 122 and the inertub 120 rotate at the same rotation speed w1 as the carriers 344 and 344' and the ring gear housings 345a and 345a'. In addition, the gearbox housing 345b rotates at the same rotational speed w1 as the sun gear 342 .

100: cabinet 101: door
110: outer tub 111: suspension bar
120: inner tube 120a: side wall
121: base 121a: round part
121a1: projection 121a2: duct communication port
121b: first step portion 121c: second step portion
121c1: communication hole 121d: connection surface
122: pulsator 122a: rotating plate
122a1: through hole 122b: central projection
122c: protrusion 122b1: concave groove
122b2: shaft support groove 123: blade
123a: rotating plate 123b: pumping wing
123c: axis coupling part 124: hub
124a: washing water inlet hole 124b: central coupling part
125: balancer 126: circulation duct
126a: circulating flow path 127: wash water discharge unit
127a: discharge body 128: filter unit
128a: filter housing 128a1: outlet
130: drive motor 131: motor casing
132a: washing shaft 132b: spin-drying
133: fixed bracket 134: connection bracket
137: Clutch
340: power transmission unit 340a: gear module placement space
341a, 341b, 341c: sealer
342: sun gear
342a: sun gear housing 342a1: sun gear lower housing
342a2: sun gear side housing 342a3: sun gear upper housing
343: planetary gear
344, 344': carrier
344a, 344a': planetary gear rotation shaft
344b, 344b': connecting shaft upper plate 344c, 344c': connecting shaft lower plate
344e': carrier housing
344e1': carrier side housing 344e2': carrier upper housing
344f: reinforcement
345, 345': ring gear
345a, 345a': ring gear housing
345a1, 345a1': Ring gear side housing
345a2, 345a2': Ring gear upper housing
345b: gearbox housing
345b1: gearbox lower housing
345b2: Gearbox side housing
345b3: Gearbox upper housing
346: jig
346a: central coupling portion 346b: extension portion
346b1: fastening member 346c: connecting part
347a: first bearing 347b: second bearing
347c: third bearing 347d: fourth bearing
347e: 5th bearing 347f: 6th bearing
349: concentric shaft assembly
349a: pulsator connecting shaft 349b: blade connecting shaft
349c: Inertub connection shaft 349d: Jig connection shaft

Claims (15)

an outer tub for accommodating wash water therein;
an inner tub disposed inside the outer tub and accommodating laundry therein;
A pulsator provided at a lower portion of the inner tube;
a pulsator connecting shaft for rotating the pulsator;
a blade provided on the lower side of the pulsator;
a blade connecting shaft for rotating the blade independently from the pulsator;
a jig disposed between the pulsator and the inner tub and fixed to the inner tub;
a jig connecting shaft having an upper portion fixed to the jig and passing through a lower surface of the outer tub; and
Laundry treatment apparatus comprising a gear module for relatively rotating the blade connection shaft and the pulsator connection shaft with respect to the jig connection shaft. According to claim 1,
The jig is a laundry treatment device disposed between the pulsator and the blade. According to claim 1,
The jig connecting shaft is disposed through the center of the blade connecting shaft. According to claim 1,
The pulsator connecting shaft is disposed through the center of the jig connecting shaft. According to claim 1,
The blade connection shaft and the pulsator connection shaft are disposed passing through the lower surface of the outer tub laundry treatment device According to claim 1,
The gear module,
A laundry treatment device disposed outside the outer tub. According to claim 1,
A drive motor disposed outside the outer tub and rotating the washing shaft;
The gear module,
Laundry treatment apparatus for transmitting the rotational force of the washing shaft to the pulsator connecting shaft and the blade connecting shaft, respectively. According to claim 1,
A drive motor disposed outside the outer tub and rotating the washing shaft;
The gear module,
a sun gear integrally rotating with the washing shaft;
a plurality of planetary gears that are engaged with the outer circumferential surface of the sun gear and rotate;
a carrier provided so that a plurality of rotational shafts of the planetary gears passing through central portions of the plurality of planetary gears are connected to each other; and
Including a ring gear inscribed with the plurality of planetary gears and interlockingly coupled,
Any one of the carrier and the ring gear is fixed to the jig connecting shaft, and the other one of the carrier and the ring gear is relatively rotatably provided with respect to the jig connecting shaft. According to claim 1,
A drive motor disposed outside the outer tub and rotating the washing shaft;
The gear module,
a sun gear integrally rotating with the washing shaft;
a plurality of planetary gears that are engaged with the outer circumferential surface of the sun gear and rotate;
a carrier provided so that a plurality of rotational shafts of the planetary gears passing through central portions of the plurality of planetary gears are connected to each other; and
Including a ring gear inscribed with the plurality of planetary gears and interlockingly coupled,
The blade connecting shaft rotates integrally with the sun gear,
The pulsator connecting shaft is a laundry treatment device that is integrally rotated with any one of the carrier and the ring gear. According to claim 9,
The other one of the carrier and the ring gear is integrally rotatably connected to the jig connecting shaft. According to claim 9,
The gear module,
a ring gear housing to which the ring gear is fixed to an inner surface; and
A laundry treatment apparatus comprising a sun gear housing accommodating the ring gear housing therein, fixed to a lower portion of the blade connection shaft, and integrally rotating with the washing shaft and the sun gear. According to claim 11,
spin-drying and shrinking through which the washing shaft passes;
a clutch for switching whether the spin-drying shaft and the washing shaft are integrally rotated; and
Including an inner tub connecting shaft having an upper portion fixed to the inner tub and passing through a lower surface of the outer tub;
The gear module,
A laundry treatment apparatus comprising a gearbox housing accommodating the sun gear housing therein, to which an upper part of the spin-drying shaft is fixed, and a lower part of the inertub connecting shaft is fixed. According to claim 9,
The gear module includes a ring gear housing to which the ring gear is fixed to an inner surface and to which a lower portion of the jig connecting shaft is fixed,
Laundry treatment apparatus in which the lower portion of the pulsator connecting shaft is fixed to the carrier. According to claim 9,
The gear module includes a ring gear housing to which the ring gear is fixed to an inner surface and to which a lower portion of the pulsator connecting shaft is fixed,
the carrier,
A laundry treatment apparatus comprising a carrier housing to accommodate the ring gear housing therein and to which a lower portion of the jig connecting shaft is fixed. an outer tub for accommodating wash water therein;
an inner tub disposed inside the outer tub and accommodating laundry therein;
a pulsator rotatably provided at a lower portion of the inner tub;
a blade rotatably provided on the lower side of the pulsator;
A jig disposed between the pulsator and the blade and fixed to the inner tube; and
Laundry treatment apparatus comprising a jig connecting shaft having an upper portion fixed to the jig and disposed penetrating the lower surface of the outer tub.

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