KR20190119825A - Washing machine - Google Patents

Abstract

According to the present invention, a washing machine includes: a first washing tub rotated around a vertical shaft; and a second washing tub removably combined with the first washing tub to be rotated together with the first washing tub. The second washing tub includes: a container storing laundry; a lower cover combined with the upper part of the container, and including an inlet for taking a water current rising in the container when the first washing tub is rotated and an outlet for discharging the water taken through the inlet to the outside of the second washing tub; an upper cover combined with the upper part of the lower cover to limit the flow path from the inlet to the outlet between itself and the lower cover; a storage housing including an inlet and combined with the lower cover; an additive storage part storing additives, and installed in the storage housing to be able to be withdrawn through the inlet; and a slider installed on the storage housing to be able to be moved between a combination position and a release combination. The upper cover includes a combination tap combined with the slider when the slider is located on the combination position.

Description

Washing machine {WASHING MACHINE}

The present invention relates to a washing machine, and more particularly to a washing machine having two washing tanks.

A washing machine is a device for processing laundry through various actions such as washing, dehydration and / or drying. A washing machine is a device that removes dirt on laundry (also called “foam”) using water and detergent.

Recently, a washing machine equipped with two washing tanks has been released. Such a washing machine has a large washing tank and a small washing tank, each washing tank being separated from each other. It is convenient to use the washing tanks at the same time or at the same time according to the needs of the user, furthermore, it is very economical because only a small capacity washing tank can be used when a small amount of washing is required.

Korean Patent Laid-Open Publication No. 10-2015-0089344 discloses a washing machine in which an auxiliary washing tank is coupled to an upper end of a rotating tank. The auxiliary washing tank is generally cylindrical, but the bottom is clogged, the upper surface is an open shape, the through hole for drainage is formed on the cylindrical circumferential surface.

When the auxiliary washing machine is rotated, the water raised by the centrifugal force is discharged through the through holes. However, in such a case, when it is difficult to handle the flow rate through which the through holes are drained, there is a problem that water flows over the auxiliary washing tank.

In order to solve such a problem, it is possible to devise a method of installing a cover in the auxiliary washing tank and configuring a flow path for drainage in the cover. In particular, the cover may be composed of two parts up and down to form the flow path, and a method of constituting the flow path between them may be devised. In this case, the two parts may be used to maintain and repair the flow path. The two parts need to be able to be separated from each other, but they need not be separated from each other during the operation of the washing machine.

The problem to be solved by the present invention, first, in the washing machine detachably installed in the first washing tank installed in the cabinet, the second washing tank comprises a container for receiving laundry and water and a washing tank cover covering the container. In the case where the upper cover and the lower cover are coupled to each other, the upper cover and the lower cover can be easily separated for maintenance, and at the time of operation of the washing machine or during the process of moving the second washing tank. It is to provide a washing machine that is firmly coupled so as not to be separated from each other.

The objects of the present invention are not limited to the above-mentioned objects, and other objects that are not mentioned will be clearly understood by those skilled in the art from the following description.

In the washing machine of the present invention, a second washing tank is detachably coupled to a first washing tank rotated about a vertical axis, and the first washing tank and the second washing tank are integrally rotated.

The second washing tank includes a container for storing laundry and a washing tank cover coupled to an upper side of the container. The washing tank cover is a form in which the lower cover and the upper cover are mutually coupled.

An accommodation housing is coupled to the lower cover. The receiver housing is provided with a slider. The slider is movable between a binding position and a disengaging position.

The top cover has a binding tab. When the slider is in the binding position, the binding tab and the slider are engaged. The binding force between the slider and the binding tab prevents the upper cover from being separated from the lower cover.

The lower cover is formed with an inlet through which water flows up in the container when the first washing tank is rotated, and an outlet for discharging water introduced through the inlet to the outside of the second washing tank.

The upper cover is coupled to an upper side of the lower cover to define a flow path from the inlet to the outlet between the lower cover.

An opening is formed in the accommodation housing, and an additive accommodation portion for accommodating an additive is installed in the accommodation housing through the entrance.

The housing portion may be formed with a guide slot for guiding to move between the binding position and the disengagement position in the state that the slider is fitted, the binding tab is formed at a height corresponding to the guide slot, A locking groove may be formed to engage the slider.

The slider may be separated from the binding tab when in the disengagement position.

The slider may include a connection section moved within the guide slot, an inner section connected with the connection section inside the accommodating housing, and an outer section connected with the connection section outside the accommodating housing. Can be.

The connection section may be connected to the binding tab between the housing portion and the outer section.

In the lower cover, the outer section may be inserted, and a movement guide groove for guiding the movement of the inner section may be formed in response to the displacement of the slider. The lower end of the movement guide groove may be opened so as to exit from the movement guide groove in a state where the slider is separated from the binding tab.

Specific details of other embodiments are included in the detailed description and the drawings.

First, the washing machine of the present invention has the effect that the upper cover and the lower cover constituting the washing tank cover of the second washing tank can be easily separated by a simple operation of the user.

Second, since the disassembly of the washing tank cover is made simple, maintenance and repair of the washing tank cover are easy.

Third, even if the user does not directly bind the upper cover and the lower cover, there is an effect that the upper cover and the lower cover are automatically bound in the process of adding the additive receiving portion.

The effects of the present invention are not limited to the above-mentioned effects, and other effects not mentioned will be clearly understood by those skilled in the art from the description of the claims.

1 is a side cross-sectional view of a washing machine according to an embodiment of the present invention.
2 is a perspective view of a second washing tank.
3 is an exploded perspective view of the second washing tank.
4 is a perspective view illustrating the washing tub cover.
5 is a perspective view illustrating a state in which a second washing tank is installed in a balancer.
FIG. 6 is a top down view of the assembly shown in FIG. 5.
FIG. 7 is a cross-sectional view taken along the line VII-VII of FIG. 6.
8 is a perspective view showing the bottom of the lower cover.
9 is a perspective view showing the assembly of the receptacle housing and the slider.
10 is a perspective view of the assembly of FIG. 9 viewed from another angle.
11 is a perspective view illustrating the slider.
12 illustrates a state in which the slider and the binding tab are bound.
Fig. 13 shows a state in which the slider is in the disengaged position.
(A) of FIG. 14 shows a state where the slider is engaged with the binding tab, and (b) shows a state where the slider is separated from the binding tab.
15 shows the direction in which the receptacle housing is separated from the lower cover.
16 illustrates a state in which the upper cover is separated from the lower cover.
17 illustrates a state in which the additive containing portion is drawn out from the containing housing.

Advantages and features of the present invention and methods for achieving them will be apparent with reference to the embodiments described below in detail with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but can be implemented in various different forms, and only the embodiments make the disclosure of the present invention complete, and the general knowledge in the art to which the present invention belongs. It is provided to fully inform the person having the scope of the invention, which is defined only by the scope of the claims. Like reference numerals refer to like elements throughout.

1 is a side cross-sectional view of a washing machine according to an embodiment of the present invention. 2 is a perspective view of a second washing tank. 3 is an exploded perspective view of the second washing tank. 4 is a perspective view illustrating the washing tub cover. 5 is a perspective view illustrating a state in which a second washing tank is installed in a balancer. FIG. 6 is a top down view of the assembly shown in FIG. 5. FIG. 7 is a cross-sectional view taken along the line VII-VII of FIG. 6. 8 is a perspective view showing the bottom of the lower cover. Reference will now be made to FIGS. 1 to 8.

The cabinet 2 forms the exterior of the washing machine, and forms a space in which the reservoir 4 is accommodated. The cabinet 2 is supported by a flat cabinet base 5 and includes a front side, a left side, a right side, and a rear side, and the top side is open.

The top cover 3 may be coupled to an open upper surface of the cabinet 2. The top cover 3 may be formed with an opening for inputting and withdrawing laundry (or "foam"). A door (not shown) for opening and closing the opening may be rotatably coupled to the top cover 3.

The reservoir 4 is for holding water, and can be suspended in the cabinet 2 by the support rod 15. Support rods 15 may be provided at four corners of the cabinet 2, respectively, one end of each support rod 15 pivotally connected to the top cover 3, and the other end of the suspension cushions vibration. It is connected with the reservoir 4 by the 27.

An upper surface of the reservoir 4 may be opened, and a reservoir cover 14 may be provided on the opened upper surface. The reservoir cover 14 is formed in a ring shape in which a substantially circular opening is formed at the center, and laundry is introduced through the opening.

In the reservoir 4, a first washing tank 6 may be arranged that accommodates laundry and is rotated about a vertical axis. The vertical axis is substantially perpendicular to the ground. The vertical axis may be precisely aligned on a line perpendicular to the ground, but is not limited thereto, and may be inclined at a predetermined angle with respect to the vertical line. A plurality of through holes 6h through which water passes are formed in the first washing tank 6, and water is exchanged between the first washing tank 6 and the water storage tank 4 through the through holes 6h.

The first washing tank 6 may include a drum 6a having an upper side opened and a through hole 6h formed therein, and a ring balancer 20 coupled to the upper portion of the drum 6a. The bottom of the drum 6a may be connected to the rotation shaft of the drive unit 8 by the hub 7.

The pulsator 9 may be rotatably provided at an inner lower portion of the first washing tub 6. The pulsator 9 may comprise a plurality of radial wings protruding upwards. When the pulsator 9 is rotated, water flow is created by the vanes.

The balancer 20 is to compensate for the eccentricity caused when the drum 6a rotates. The balancer 20 is coupled to the upper end of the drum 6a. 5 to 7, the balancer 20 may include a balancer body 21 that forms ring-shaped cavities 20h1 and 20h2. A fluid (eg, brine) or a plurality of weights (eg, metal balls) may be inserted into the cavities 20h1, 20h2. The annular cavities 20h1 and 20h2 may be concentric but have a plurality of diameters different from each other.

If the drum 6a is biased to one side while the drum 6a is being rotated, the eccentricity is corrected by moving the fluid or the weights in the opposite direction to the direction in which the drum 6a is biased. Ring-type balancer 20 applied to the washing machine is already known in various forms, further description thereof will be omitted.

The second washing tank 10 may be inserted into a space (or an approximately circular opening) defined by the ring-shaped balancer 20, and supported by the balancer 20 in this inserted state. The second washing tank 10 includes a container 30 in which laundry is stored and a washing tank cover 60 covering the container 30. The container 30 holds laundry and water, and an upper surface thereof is opened, and the washing tub cover 60 covers at least a portion of the opened upper surface. The container 30 may be made of a transparent material so that the laundry accommodated inside is visible from the outside.

A ring-shaped support part 22 supporting the container 30 may be formed in the inner diameter part of the balancer body 21 (the part forming the inner circle among two circles constituting the ring shape when viewed from above). In the support portion 22, a plurality of engagement grooves 22c extending in the vertical direction are arranged along the circumferential direction. Each engagement groove 22c may be in the form of a spiral.

The outer surface of the container 30 may be formed with a thread (33) of the projection shape engaging with the engaging grooves (22c) formed in the support portion 22. The thread 33 extends up and down in a form corresponding to the engaging groove 22c. That is, when the engaging groove 22c is in the form of a spiral, the thread 33 is also a protrusion extending helically. The threads 33 are arranged in plural along the circumferential direction.

The threads 33 constitute a kind of helical gear and engage with the engaging grooves 22c formed in the seating portion 33 of the balancer 20. Due to this structure, when the first washing tank 6 is rotated, the second washing tank 10 can be rotated integrally with the first washing tank 6 without turning. In addition, since this type of coupling between the balancer 20 and the container 30 is also a kind of screwing, the coupling between the second washing tank 10 and the first washing tank 6 is maintained firmly. In particular, the second washing tank 10 may be fixed without being lowered by the restraining force (for example, the frictional force acting between the surfaces engaged with each other) of the coupling between the thread 33 and the engaging groove 22c.

The second washing tank 10 accommodates laundry and is detachably provided in the first washing tank 6. That is, the second washing tank 10 is detachably coupled to the first washing tank 6. When the 1st washing tank 6 is rotated in the state in which the 2nd washing tank 10 was installed, the 2nd washing tank 10 will also rotate integrally with the 1st washing tank 6.

The user may inject the first laundry into the first washing tank 6 while the second washing tank 10 is not installed, or install the second washing tank 10 to inject the second laundry into the second washing tank 10. have.

In the cabinet 2, a driving unit 8 may be arranged to provide power for rotating the first washing tub 6 and the pulsator 9. The drive unit 8 is disposed below the reservoir 4 and can be suspended in the cabinet 2 in a state coupled to the bottom of the reservoir 4.

The rotary shaft of the drive unit 8 is always connected to the pulsator 9, and may be connected to or disconnected from the first washing tank 6 according to a switching operation of a clutch (not shown). Accordingly, when the driving unit 8 is operated while the rotation shaft of the driving unit 8 is connected to the first washing tank 6, the pulsator 9 and the first washing tank 6 are integrally rotated, and the rotating shaft is When operating in a state of being disconnected (or disconnected) from the first washing tub 6, only the pulsator 9 is rotated while the first washing tub 6 is stopped.

The drive unit 8 may include a washing motor capable of speed control. The washing motor may be an inverter direct drive motor. The controller (not shown) may include a proportional-integral controller (PI controller), a proportional-integral-derivative controller (PID controller), and the like. The controller receives an output value (eg, output current) of the washing motor as an input, and based on this, the rotation speed (or rotation speed) of the washing motor follows the preset target rotation speed (or target rotation speed). Can be controlled.

The control unit may control not only the washing motor, but also the overall operation of the washing machine, and the control of each of the components described below is made by the control of the control unit.

On the other hand, the washing machine may include at least one water supply pipe 11 for guiding water supplied from an external water source such as a faucet. The at least one water supply pipe 11 may include a cold water pipe (not shown) receiving cold water from an external water source, and a hot water pipe (not shown) receiving hot water.

A water supply valve 13 for controlling the water supply pipe 11 may be provided. When a plurality of water supply pipes 11 are provided, a plurality of water supply valves 13 may also be provided, and the water supply pipes 11 may be interrupted by the water supply valves 13, respectively. When at least one water supply valve 13 is opened under the control of the controller, water is supplied to the main dispenser 16 through the water supply pipe 11 corresponding to the open water supply valve 13.

The main dispenser 16 supplies the additives acting on the laundry to the water storage tank 4 together with the water supplied through the water supply pipe 11. Additives supplied by the main dispenser 16 include laundry detergents, fabric softeners, bleaches and the like.

On the other hand, the washing machine may further include a drainage bellows 19a for discharging water from the reservoir 4 and a drain valve 17 for controlling the drainage bellows 19a. The drainage bellows 19a may be connected to the pump 18. When the drain valve 17 is opened, water is supplied to the pump 18 through the drain bellows 19a. The water introduced into the pump 18 is discharged to the outside of the washing machine through the drain pipe 19b when the pump 18 is operated.

In the center of the washing tub cover 60, an inlet 60h is formed so that laundry can be put into the container 30. The washing tub cover 60 includes a lower cover 40 and an upper cover 50 coupled to an upper side of the lower cover 40.

The lower cover 40 may be coupled to the upper end of the container 30. The lower cover 40 and the container 30 are each made of synthetic resin, and are preferably bonded to each other by welding, more preferably by thermal welding, but are not necessarily limited thereto.

The lower cover 40 includes an inlet 452h through which water flows up in the container 30 when the first washing tank 6 is rotated, and water introduced through the inlet 452h of the second washing tank 10. An outlet 431 for discharging to the outside is formed.

The upper cover 50 is coupled to the upper side of the lower cover 40, and defines a flow path from the inlet 452h to the outlet 431 between the lower cover 40. A check valve 91 for opening and closing the inlet 452h may be provided on the flow path. The check valve 91 may be configured to be opened or closed by centrifugal force caused by the rotation of the second washing tank 10 or may be opened or closed by hydraulic pressure acting through the inlet 452h.

Between the lower cover 40 and the upper cover 50, a locking member 81 held by a spring (not shown) may be provided. When the second washing tank 10 is rotated, the locking member 81 protrudes outward along the radial direction by the centrifugal force to engage the locking groove 22r formed in the balancer 20. At this time, the spring is in a deformed state. When the second washing tank 10 is stopped, the locking member 81 is released from the locking groove 22r by the restoring force of the spring and is returned to its original position.

The upper cover 50 may be detachably coupled to the lower cover 40. If necessary, the user may maintain or repair the check valve 91 after removing the upper cover 50 from the lower cover 40, and may clean the flow path.

A first opening 40h is formed in the lower cover 40, and a second opening 50h is formed in the upper cover 50 to communicate with the first opening 40h and form an injection hole 60h.

The washing tank cover 60 may be provided with a water supply port 51h through which water discharged from the main dispenser 16 flows. The washing tub cover 60 is provided with a sub dispenser 70 containing additives such as detergents, bleaches or fabric softeners, and the water supplied to the water inlet 51h passes through the sub dispenser 70 with the additives together with the container ( 30). The additive is preferably in a liquid state so as to be smoothly discharged through the siphon tube 724 to be described later.

Water supply through the water inlet 51h may be performed a plurality of times. In this case, since the additives are all discharged through the siphon tube 724 which will be described later in the first water supply, the water in which the additive is not dissolved through the sub dispenser 70 during the subsequent water supply. , Raw water).

On the other hand, when the second washing tank 10 is rotated at a sufficient speed, the water flow developed outward along the radial direction by the centrifugal force in the container 30 is the inner surface of the container 30 (that is, the container main body 31). Ascending along the inner surface of the), it may be introduced into the washing tank cover 60 through the inlet 452h to be described later. The washing tub cover 60 is formed with a flow path for guiding the water flow introduced through the inlet 452h.

The washing tub cover 60 may include a nozzle 62 for discharging the water flow guided along the flow path to the outside of the washing tub cover 60. The nozzle 62 may be inserted into and fixed to the outlet 431 formed in the lower cover 40. The nozzle 62 may have a slit-shaped outlet extending in the horizontal direction.

The outlet is open downward rather than the reservoir cover 14. As the second washing tank 10 is rotated at a high speed, the water discharged through the nozzle 62 may be guided along the bottom surface of the reservoir cover 14.

As shown in FIG. 5, in a state where the second washing tank 10 is installed in the balancer 20, the nozzle 62 is located above the balancer 20 (that is, exposed upward above the balancer 20). Thus, the water sprayed through the nozzle 62 can reach the reservoir 4 without interfering with the balancer 20.

Meanwhile, referring to FIG. 3, the inner surface of the container 30 may include a vane 35 extending in the vertical direction. The vanes 35 protrude from the inner surface of the container 30, and are manufactured as separate parts from the container 30, and may be installed in the container 30. The water flow generated by the rotation of the second washing tank 10 rises due to the collision with the vanes 35 and then falls to the center of the container 30. The vanes 35 may be provided in plural. Preferably, the vanes 35 are symmetrically disposed with respect to the rotation center of the second washing tank 10. In an embodiment, a pair of vanes 35 is provided, but the number of vanes 35 is not limited thereto.

The washing tub cover 60 may include a handle 61 formed around the inlet 60h. When looking down the washing tank cover 60 from the top, the inlet opening (60h) is located on one side based on the handle 61, the water supply port (51h) is located on the other side. The handle 61 may be provided at both sides of the inlet 60h, and the water inlet 51h may be provided at the other side of each handle 61, respectively.

The sub dispenser 70 may be provided at both sides of the washing tank cover 60. In this case, the laundry detergent or the bleach may be supplied through any one of the pair of sub dispensers 70, and the fabric softener may be supplied through the other.

The sub dispenser 70 may be provided in the lower cover 40. The sub dispenser 70 may be disposed at positions corresponding to the pair of water inlets 51h, respectively. Hereinafter, the pair of sub dispensers 70 are divided into a first sub dispenser 70 (1) and a second sub dispenser 70 (2), respectively.

Depending on the rotational position (or rotational angle) of the second washing tank 10, the water discharged from the main dispenser 16 is selectively selected to the first sub dispenser 70 (1) or the second dispenser 70 (2). Can be watered. For example, the second washing tank is controlled by the control unit so that water is supplied to the first sub dispenser 70 (1) during the washing stroke and water is supplied to the second sub dispenser 70 (2) during the rinsing stroke. The rotation position (or rotation angle) of 10 can be controlled.

Each sub dispenser 70 is retractably housed in the receptacle housing 71, the receptacle housing 71, and has an open top surface of the additive receptacle 72 and an opening of the additive receptacle 72. It may include a receptacle cover 73 covering the upper surface. The receptacle cover 73 may be detachably coupled with the additive receptacle 72. The receiving portion cover 73 is formed with an opening 73h through which water discharged from the main dispenser 16 passes, and the water passing through the opening 73h is supplied into the additive receiving portion 72.

The upper cover 50 may include a flow guide 52 for guiding water introduced through the water inlet 51h to the sub dispenser 70. The flow guide 52 forms an inclined surface such that the water is guided downward, and the water guided along the inclined surface is guided to the opening 73h of the accommodation cover 73.

The additive receiving unit 72 is a container having an open top surface, and the additive may be accommodated in the additive receiving unit 72. The additive receptacle 72 is coupled with the receptacle housing 71, and this coupling is to allow the additive receptacle 72 to be inserted into or withdrawn from the receptacle housing 71. .

The additive receiving part 72 may be provided to be rotatable with respect to the receiving part housing 71. The additive receiving unit 72 includes a container 722 (see FIG. 17) having an open top surface containing an additive, and a connecting link 721 (see FIGS. 3 and 17.) Protruding from the container 722. 60, preferably, may be rotatably connected to the lower cover 40. That is, the connecting link 721 is the front end is connected to the additive receiving portion 72, the rear end may be rotatably coupled to the washing tank cover 60.

In accordance with the rotation of the connection link 721, the additive receiving portion 72 enters and exits the receiving portion housing 71. Therefore, by designing the connecting link 721 to an appropriate length and shape, compared to the case where the additive receiving portion 72 is installed in the receiving housing 71 in a sliding manner, the additive receiving portion 72 to the receiving housing ( It is easy to take out more to the outside of 71), Preferably it can also take out completely, and the ease of use at the time of adding an additive improves.

An opening 715 through which the connection link 721 passes may be formed in the second side portion 714 of the accommodation housing 71. With the additive receptacle 72 positioned in the receptacle housing 71, the rear end of the connecting link 721 passes through the opening 715 and protrudes out of the receptacle housing 71. In this protruding portion, the connection link 721 is rotatably coupled with the washing tub cover 60.

For example, the rear end of the connection link 721 may be rotationally coupled (or hinged) with the lower cover 40. A mount (not shown) may be formed inside the lower cover 40 to which the rear end of the connection link 721 is rotatably coupled. More specifically, the rear end of the connection link 721 is formed with a protrusion (or, protrusion insertion groove recessed upward and / or downward) protruding upward and / or downward, the mount of the lower cover 40 A projection insertion groove (or projection) corresponding to the projection is formed so that the projection (or projection insertion groove) is rotated in the projection insertion groove (or projection) so that the connection link 721 is rotated about the rear end. However, the present invention is not necessarily limited thereto, and in some embodiments, may be installed in a linearly slidable manner with respect to the accommodating housing 71.

Referring to FIG. 7, the additive receiving portion 72 may include a siphon tube 724 protruding upward from the bottom, and the receiving portion cover 73 covers the siphon cap covering the siphon tube 724. 732 may be included.

An outlet of the siphon tube 724 is formed at the bottom of the additive receiving portion 72, and the siphon cap 73 forms an annular flow passage having an annular cross section between the siphon tube 724 and the outer peripheral surface of the siphon tube 724. Such a structure is suitable for supplying a liquid additive.

As the water is supplied to the sub dispenser 70 and the water level in the additive receiving portion 72 gradually rises, the water rises along the annular flow path with the cross section through the inlet on the top of the siphon tube 724. After being introduced into 724, it is discharged into the container 30 through an outlet at the bottom of the siphon tube 724.

On the other hand, in order for the laundry in the first washing tank 6 and the laundry in the second washing tank 10 to be washed at the same time, water supply to the first washing tank 6 should be possible with the second washing tank 10 installed. Hereinafter, how water is supplied to the first washing tank 6 in a state where the second washing tank 10 is installed will be described.

Referring to FIG. 6, when viewed from above, an appearance of the second washing tank 10 may include a first section S1 contacting the support 22 of the balancer 20, and a second spaced apart from the support 22. It may include a section (S2).

The first section S1 is located on a first axis (line VII-VII) passing through the vertical axis O, and the second section S2 is a second crossing perpendicular to the first axis and perpendicular to the first axis. It can be located on the axis (Y). The first section S1 may be formed at both sides to be symmetrical with respect to the second axis Y, and the second section S2 may be formed at both sides to be symmetrical with respect to the first axis.

Under the control of the driving unit 8 of the control unit, when the second washing tank 10 is rotated and aligned to the first rotational position, the water discharged from the main dispenser 16 is separated from the second section S2 and the balancer 20. Water may be supplied into the container 30 through the gap formed between the inner circumferential surface of the.

Under the control of the drive unit 8 of the control unit, when the second washing tank 10 is aligned with the second rotating position rotated by the predetermined angle from the first rotating position, the water discharged from the main dispenser 16 is supplied to the water supply port 51h. Is supplied to the sub dispenser 70. That is, in the second washing tank 10, in the second rotational position, the water inlet 51h is aligned with the outlet of the main dispenser 16 so that water discharged through the outlet flows into the water inlet 51h. . In the embodiment, the second rotational position is the position where the first washing tub 6 is rotated 90 degrees from the first rotational position. However, when the position of the water inlet 51h is changed according to the embodiment, the angle between the second rotational position and the first rotational position may be changed. As described above, since the washing motor is capable of speed control, the control unit controls the rotation angle of the first washing tank 6 or the rotation position of the first washing tank 6 based on the speed of the washing motor. It is possible. Since the second washing tank 10 is rotated integrally with the first washing tank 6, controlling the rotation angle or the rotation position of the first washing tank 6 controls the rotation angle or the rotation position of the second washing tank 10. It is also.

Specifically, a first hall sensor (not shown) may be provided in the reservoir cover 14, and a first magnet may be provided in the second washing tank 10. While the second washing tank 10 is rotated, the first hall sensor may be configured to detect a magnetic field formed by the first magnet and send a signal to the controller based on the first hall sensor. The controller may determine the rotation speed, the rotation position (or the position of the first magnet), the rotation angle, etc. of the second washing tub 10 based on the received signal, and based on this, the first washing tub 6 may The laundry motor can be controlled to be aligned in a first rotational position or in a second rotational position.

On the other hand, the rotor of the washing motor may be provided with a second magnet, the second Hall sensor for detecting the magnetic field generated by the second magnet is fixed structure (for example, the water tank 4 near the second magnet) ) May be disposed on the bottom surface). A plurality of second magnets may be disposed along the circumference of the rotor. The control unit may control the washing motor based on the signal output from the second hall sensor. In this case, the second washing tank 10 may be configured by considering the signals output from the first hall sensor. It can be controlled to be aligned in one rotational position or the second rotational position.

According to an embodiment, the rotation angle of the rotor may be detected without a separate sensor. That is, the controller may detect the rotation angle of the rotor in a sensorless manner. For example, after allowing a constant frequency phase current to flow through the washing motor, the position of the rotor of the washing motor may be estimated based on the output current detected while the constant frequency current flows through the washing motor. Since the sensorless method corresponds to a known technique, a detailed description thereof will be omitted.

On the other hand, after the water supply is completed in the container 30, the control unit controls the drive unit 8 in accordance with a predetermined algorithm to perform the washing. Then, the water used for washing should be discharged from the second washing tank 10, this drainage is made using the centrifugal force caused by the high-speed rotation of the second washing tank (10).

The lower cover 40 may include a bottom portion 452 formed with an inlet 452h and a sidewall portion 43a extending upward from the bottom portion 452 and having an outlet 431 formed therein. The lower cover 40 includes a first upper surface portion 41 having a first opening portion 40h and a first inner wall portion 42 extending downward from the first upper surface portion 41 around the first opening portion 40h. ) And an outer wall portion 43 extending along the outer circumference of the first upper surface portion 41.

The lower cover 40 may include an inner handle 410. One side of the inner handle 410 may be formed by the first inner wall portion 42, in which case the one side defines the first opening 40h. An opening 42h for installing the sub dispenser 70 is formed at one side thereof, and the opening 42h is formed at a height higher than that of the sub dispenser 70, so as to be formed between the sub dispenser 70 and the inner handle 410. On holding the handle 61, a space through which a user's finger passes is formed.

The upper cover 50 includes a second upper surface portion 51 having a second opening portion 50h and a water supply port 51h extending downward from the second upper surface portion 51 around the second opening portion 50h. 2 may include an inner wall portion 53. The water inlet 51h is located outside the second opening 50h in the radial direction.

The second upper surface part 51 may include an outer handle 510 formed between the water inlet 51h and the second opening 50h. The outer handle 510 is a handle upper surface portion 511 belonging to the second upper surface portion 51 and a second inner wall portion 53 as a portion extending downward from the handle upper surface portion 511 around the second opening 50h. ) May include a first handle side portion 512 and a second handle side portion 513 extending downward from the handle upper surface portion 511 around the water inlet 51h. That is, a groove having a “c” shape having a lower side formed by the handle upper surface portion 511, the first handle side portion 512, and the second handle side portion 513 is formed.

The inner handle 410 is inserted into the groove of the letter "C". When the user grips the inner handle 410 and the outer handle 510 together, the upper cover 50 and the lower cover 40 are not separated from each other when lifting the second washing tank 10.

A hook (not shown) is formed on one of the inner handle 410 and the outer handle 510 so that the inner handle 410 and the outer handle 510 are more firmly coupled to each other, and the other hook is caught by the hook. Grooves (not shown) may be formed.

Meanwhile, the opening 53h may be formed in the second inner wall portion 53 of the upper cover 50 at a position corresponding to the opening 42h of the lower cover 40. The first handle side portion 512 of the outer handle 510 may be formed by the second inner wall portion 53, in which case the first handle side portion 512 defines the second opening 50h.

The height of the opening 53h is defined by the lower end of the first handle side portion 512. The lower end of the first handle side portion 512 may be positioned at substantially the same height as the lower end of the second handle side portion 513.

On the other hand, the upper cover 50, the flow guide 52 may extend from the section located around the water inlet 51h, in particular, the opposite side to the second handle side portion 513. That is, the flow guide 52 extends from the second upper surface portion 51 at a position spaced outwardly in the radial direction from the second handle side portion 513. The flow guide 52 extends gradually downward from the second upper surface 51 toward the inside in the radial direction.

9 is a perspective view showing the assembly of the receptacle housing and the slider. 10 is a perspective view of the assembly of FIG. 9 viewed from another angle. 11 is a perspective view illustrating the slider. Fig. 12 shows a state in which the slider and the binding tab are engaged. (The housing part is omitted in Fig. 12.) Fig. 13 shows the state in which the slider is in the unlocking position. Fig. 14 (a) shows the state where the slider is engaged with the binding tab, and (b) shows the state where the slider is separated from the binding tab. (The housing of the accommodating part is omitted in Fig. 14). The direction in which the secondary housing is separated from the lower cover is shown. 16 illustrates a state in which the upper cover is separated from the lower cover. 17 illustrates a state in which the additive containing portion is drawn out from the containing housing.

9 to 17, the accommodating housing 71 may be coupled to the lower cover 40 by providing a space in which the additive accommodating portion 72 is accommodated. The accommodating part housing 71 may be fixed to the lower cover 40 by fastening members such as screws or bolts.

Fastening tabs 71m1 and 71m2 having a through hole may protrude from an outer surface of the accommodating part housing 71, and the lower cover 40 may have mounting grooves 40m1, 40m2, and 40m3 corresponding to the fastening tab 47. ) May be formed (see FIG. 15). A predetermined bolt may be fastened to a fastening hole (not shown) formed in the mount grooves 40m1, 40m2, and 40m3 after passing through the through hole. A plurality of fastening tabs 47 may be formed, and correspondingly, a plurality of mounting grooves 40m1, 40m2, and 40m3 may be formed.

Receiving portion housing 71 is a form surrounding the additive receiving portion 72 as a whole, the front surface is opened so that the additive receiving portion 72 can enter and exit to form an entrance. An opening is formed in the upper surface portion 711 of the accommodating portion housing 71 so that water flowing along the flow guide 52 during water supply passes through the opening and is supplied to the additive accommodating portion 72.

Receiving portion housing 71 has a lower surface portion 712 is formed on the lower side separated from the upper surface portion 711, the water discharged through the siphon tube 724 of the additive receiving portion 72 is the lower surface portion 712 It moves along and is supplied into the container 30.

The receiver housing 71 is provided with a slider 110. The slider 110 is provided to be movable between a binding position (a position shown in (a) of FIG. 14) and a release position (a position shown in (b) of FIG. 14). The slider 110 is referred to as any one of the side portions 713 and 714 connecting the upper surface portion 711 and the lower surface portion 712 of the accommodating portion housing 71 (hereinafter, referred to as a first side portion 713). Can be installed in.)

The upper cover 50 is provided with a binding tab 57, and is engaged with the binding tab 57 when the slider 110 is in the binding position. Referring to FIG. 12, the binding tab 57 may extend downward from the bottom of the flow guide 52, and a locking groove 57h may be formed at the lower end thereof to engage the slider 110.

Receiving portion housing 71 is formed with a guide slot (71s) for guiding to move between the binding position and the disengagement position, the slider 110 is fitted. The guide slot 71s may be formed in the first side portion 713. The guide slot 71s may extend in a straight line shape.

The locking groove 57h may be located at a height corresponding to the guide slot 71s and may be opened toward the slider 110. That is, in the process of moving the slider 110 in the first direction to reach the binding position, the connecting section 113 of the slider 110, which will be described later, is inserted into the locking groove 57h, and the slider 110 is secondly positioned. When moving in the direction (direction opposite to the first direction), the connecting section 113 is separated from the locking groove (57h).

If the slider 110 and the binding tab 57 are engaged with each other when the slider 110 is moved to the binding position while the housing portion 71 is coupled to the lower cover 40, the upper cover 50 is closed. Separation from the lower cover 40 can be prevented.

When the additive accommodating portion 72 is drawn into the accommodating housing 71 while the slider 110 is in the disengagement position, the additive accommodating portion 72 is rotated (in some embodiments, the accommodating housing). In the case of being provided to be slidable in a linear direction with respect to 71, the slider 110 may be pushed to the binding position in the process of the linear movement of the additive accommodating portion 72.

In other words, the additive receiving portion 72 is configured to interfere with the slider 110 in the process of being received into the receiving housing 71 so that the additive receiving portion 72 can push the slider 110 to the binding position. Can be. In this case, even if the user does not directly operate the slider 110 in the binding position, the slider 110 is automatically moved in the process of moving the additive accommodating portion 72 into the correct position (that is, the position inserted into the accommodating housing 71). ) And the binding tab 57 are bound.

The slider 110 passes through an inner section 111 located inside the accommodating housing 71, an outer section 112 located outside the accommodating housing 71, and a guide slot 71 s. It may include a connection section 113 connecting the section 111 and the outer section 112.

The connecting section 113 is connected with the binding tab 57 between the receiving housing 71 and the outer section 112. The connecting section 113 is moved in the guide slot 71s and is inserted into the locking groove 57h of the binding tab 57 when the slider 110 is in the binding position.

The inner section 111 and the outer section 112 may have a size or shape that does not pass through the guide slot 71s. In this case, the inner section 111 or the outer section 112 is detachably coupled to the connecting section 113, and inserted into the guide slot 71s in a state where the connecting section 113 is separated, and then the inner section ( 111 or the outer section 112 may be combined with the connecting section 113.

The inner section 111 may have an interference protrusion 111a. The interstitial protrusion 111a protrudes from the periphery, and interferes with the interference protrusion 111a while the additive accommodating portion 72 is received into the accommodating housing 71 to move the slider 110 to the fastening position. .

The lower cover 40 may have a movement guide groove 49 for guiding the movement of the outer section 112. The inner section 111 is moved within the movement guide groove 49 in response to the slider 110 displacement. The movement guide groove 49 may be formed on a surface facing the first side portion 713 of the accommodating housing 71.

The lower end of the movement guide groove 49 is open, and as shown in FIG. 15, the housing 110 is separated from the binding tab 57 and the bolt of the fastening tab 47 is removed. When the 71 is moved in the direction of the arrow, the slider 110 may exit through the open lower end of the movement guide groove 49.

Although the above has been illustrated and described with respect to preferred embodiments of the present invention, the present invention is not limited to the specific embodiments described above, but in the art to which the invention pertains without departing from the spirit of the invention as claimed in the claims. Various modifications can be made by those skilled in the art, and these modifications should not be individually understood from the technical spirit or the prospect of the present invention.

Claims (10)

A first washing tub rotated about a vertical axis; And
A second washing tank detachably coupled to the first washing tank, the second washing tank being integrally rotated with the first washing tank,
The second washing tank,
A container containing laundry;
A lower cover coupled to an upper side of the container and having an inlet through which water flows up in the container when the first washing tank is rotated, and an outlet for discharging water introduced through the inlet to the outside of the second washing tank ;
An upper cover coupled to an upper side of the lower cover and defining a flow path from the inlet to the outlet between the lower cover;
An accommodation housing formed with an entrance and coupled with the lower cover;
An additive accommodating part accommodating an additive and being retractably installed in the accommodating part housing through the doorway; And
A slider provided on the accommodation housing to move between a binding position and a release position;
The upper cover,
And a binding tab engaged with the slider when the slider is in the binding position. The method of claim 1,
The housing portion,
In the state that the slider is fitted, a guide slot for guiding to move between the engagement position and the release position, is formed,
The binding tab,
Washing machine is formed in the height corresponding to the guide slot, the engaging groove is engaged with the slider. The method of claim 2,
The slider is,
The washing machine is separated from the binding tab when in the release position. The method of claim 2,
The slider is,
A connecting section moved within the guide slot;
An inner section connected to the connection section at an inside of the accommodation housing; And
An outer section connected to the connection section at an outer side of the housing part,
The connection section,
Washing machine connected to the binding tab between the housing and the outer section. The method of claim 4, wherein
The lower cover,
The washing machine is provided with a movement guide groove is inserted into the outer section, the movement of the inner section is guided in response to the displacement of the slider. The method of claim 5,
The lower end of the movement guide groove, the washing machine is opened so as to exit from the movement guide groove in a state where the slider is separated from the binding tab. The method of claim 1,
The additive containing portion,
A washing machine rotatably connected to the lower cover to access the doorway. The method of claim 7, wherein
A washing machine for pushing the slider to the binding position during the rotation of the additive accommodating part when the additive accommodating part is introduced into the accommodating part housing while the slider is in the disengaging position. The method of claim 1,
The additive containing portion,
Washing machine provided to be slidable in a linear direction with respect to the housing portion. The method of claim 9,
A washing machine for pushing the slider to the binding position during the linear movement of the additive receiving portion when the additive accommodating portion is introduced into the housing part while the slider is in the disengaging position.

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