KR20210126409A - Pulsator and laundry treating apparatus including the same - Google Patents

Abstract

A pulsator in which a frame and a cover are combined and a laundry treating apparatus including the same are provided. The pulsator according to an aspect of the present invention includes a frame formed by injection-molding a plurality of protrusions and depressions; and a cover of a metal material coupled to the frame, wherein the frame includes a step protrusion protruding from an edge and a projection protruding from the protrusion so that a portion of the rear surface of the cover is supported by the projection while the remaining portion of the rear surface of the cover is spaced apart from the frame. Therefore, the present invention prevents sanitary problems caused by foreign materials accumulated in a joint part of members according to assembly of a pulsator.

Description

Pulsator and laundry treatment equipment including the same

The present invention relates to a pulsator and a laundry treatment apparatus including the same, and more particularly, to a pulsator in which a frame and a cover are combined, and to a laundry treatment apparatus including the same.

In general, a washing machine is a device for washing laundry by using the emulsification action of detergent, the friction action of the water flow according to the rotation of the washing blade, and the impact action applied by the washing blade. Such a washing machine mainly uses an electric motor as its main power, and by using the action of detergent and water to perform washing, rinsing, and dehydration processes, contaminants attached to clothes are separated.

On the other hand, the washing machine is divided into a drum type (cylinder type), agitator type (agitator type), and a pulsator type (pulsator type) according to the washing method. Among these types of washing machines, in the winding type washing machine, the inner tub is rotatably disposed inside the outer tub of the washing tub, and the pulsator rotates at the lower portion of the inner tub to generate a water flow to perform washing.

In the case of such a winding type washing machine, it is common that the washing tub is formed of stainless steel with strong water resistance. Accordingly, it may be preferable to form the pulsator installed in the washing tub of stainless steel in terms of not only durability but also the balance with the washing tub and improving the aesthetics of the appearance.

However, due to the nature of the pulsator that has to be formed with a plurality of protrusions and depressions to generate a water flow, forming the whole of the stainless steel may make it difficult to form as well as increase the manufacturing cost.

Accordingly, various technologies have been proposed for a pulsator manufactured by combining a cover made of stainless steel on a frame made of a synthetic resin material.

In relation to the washing machine in which the pulsator as described above is installed, Korean Patent Application Laid-Open No. 10-1999-018255 (hereinafter referred to as 'Prior Document 1') discloses a pulsator for a fully automatic washing machine.

Specifically, the pulsator is composed of a plastic injection-molded body and a metal plate combined with the upper surface of the body wrapped around the body to enhance the rigidity of the pulsator and to double the cleanliness and hygiene of the existing stainless steel inner tub. is starting

However, the pulsator for a washing machine of Prior Document 1 can double the feeling of cleanliness or hygiene from the outside, but there is a problem in that it cannot properly respond to a situation in which contamination occurs due to the accumulation of foreign substances between the injection molded product and the metal plate.

And, Korean Patent No. 10-0578330 (hereinafter referred to as 'Prior Document 2') discloses a pulsator for a washing machine.

Specifically, the pulsator includes an upper surface plate molded from thin stainless steel and a lower support part injection molded from a synthetic resin material. Accordingly, when the upper surface plate and the lower support part are combined, the circular rib is in close contact with the lower surface of the upper surface plate, and a certain interval is formed in the inner part, and the water introduced into the center hole falls downward through the water hole. have.

However, the pulsator for washing machine of Prior Document 2 only considers a configuration in which water is smoothly discharged from the central part of the pulsator in which the circular rib is formed to improve washing efficiency, and the water flow between the upper surface plate and the lower support part coupled to each other is considered. There is a limit in that the configuration in which the foreign substances in the corresponding part are washed out by inducing it is not considered at all.

As described above, in the case of a pulsator manufactured by combining a frame and a cover, there is a problem to be solved for hygiene inside the pulsator, but a conventional pulsator and a laundry treatment device including the same can solve these problems properly There is no limit.

An object of the present invention is to solve the above problems of a pulsator and a laundry treatment device including the same.

Specifically, an object of the present invention is to prevent foreign substances from being accumulated at the coupling site between each member according to the assembly of the pulsator to prevent sanitary problems.

In addition, an object of the present invention is to allow each member constituting the pulsator to be structurally designed and manufactured to have a predetermined rigidity to appropriately respond to deformation caused by external force.

In addition, an object of the present invention is to prevent a decrease in washing efficiency due to the occurrence of a gap between the members in the operating state of the pulsator by stably coupling each member during assembling of the pulsator.

The technical problems to be achieved in the present invention are not limited to the technical problems mentioned above, and other technical problems not mentioned will be clearly understood by those of ordinary skill in the art to which the present invention belongs from the following description. will be able

In order to achieve the above or other objects, a pulsator and a laundry treatment apparatus including the same according to an aspect of the present invention are configured to prevent the deposition of foreign substances by maintaining a constant distance between the frame and the cover constituting the pulsator. Specifically, the cover coupled to the frame is supported by the stepped protrusion and the protrusion formed to protrude from the frame, so that the back surface of the cover is configured to be spaced apart from the frame.

In this case, the pulsator according to an aspect of the present invention and a laundry treatment device including the same can be manufactured by assembling a frame made of synthetic resin and a cover made of stainless steel.

In addition, the pulsator and laundry treatment apparatus including the same according to an aspect of the present invention is configured to properly prevent deformation by the rigidity of the frame when an external force is applied to the pulsator. In detail, the stepped step is continuously formed along the edge of the frame so that the frame has a predetermined rigidity.

In addition, the pulsator and the laundry treatment apparatus including the same according to an aspect of the present invention is configured to prevent a gap between the frame and the cover coupled to each other. Specifically, protrusions are symmetrically formed on both inclined surfaces of the protrusions of the frame to more uniformly support the rear surface of the cover.

In addition, the pulsator according to an aspect of the present invention and a laundry treatment apparatus including the same may be formed to support the cover in a state in which the protrusion protruding from the frame is in contact with the rear surface of the cover.

In addition, the pulsator according to an aspect of the present invention and a laundry treatment apparatus including the same may be formed to support the cover in a state in which the protrusions protruding from the frame are spaced apart from the rear surface of the cover.

In addition, the pulsator and the laundry treatment apparatus including the same according to an aspect of the present invention may have a first opening formed in a protrusion of the frame, and a second opening may be formed in a depression of the frame.

In addition, the pulsator and the laundry treatment apparatus including the same according to an aspect of the present invention may have a first opening and a second opening respectively formed along a radial direction from the center of the frame.

In addition, the pulsator according to an aspect of the present invention and a laundry treatment apparatus including the same may be formed so that the first opening formed in the protrusion of the frame is smaller than the second opening formed in the depression of the frame.

In addition, the pulsator and laundry treatment apparatus including the same according to an aspect of the present invention may be formed so that the first opening formed in the protrusion of the frame is located inside the second opening formed in the depression of the frame.

In addition, the pulsator according to an aspect of the present invention and a laundry treatment device including the same may have a plurality of through-holes formed through the frame along the rim.

The solutions to the technical problems to be achieved in the present invention are not limited to the solutions mentioned above, and other solutions not mentioned are clear to those of ordinary skill in the art to which the present invention belongs from the description below. will be able to be understood

The effects of the pulsator according to the present invention and the laundry treatment device including the same are as follows.

According to at least one of the embodiments of the present invention, since the cover coupled to the frame is supported by the stepped protrusion and the protrusion formed to protrude from the frame so that the back surface of the cover is spaced apart from the frame, it is possible to prevent contamination by depositing foreign substances between the frame and the cover. can be prevented

In addition, according to at least one of the embodiments of the present invention, since the pulsator is manufactured by assembling a frame made of synthetic resin and a cover made of stainless steel, the combination with the washing tub is made more stable and the hygiene of the part in contact with the laundry, Structural and aesthetic improvements can be made.

In addition, according to at least one of the embodiments of the present invention, since the stepped jaw is continuously formed along the edge of the frame and the frame has a predetermined rigidity, even when an external force is applied, deformation can be appropriately prevented by the rigidity of the frame. can

In addition, according to at least one of the embodiments of the present invention, the protrusions are symmetrically formed on both inclined surfaces of the protrusions of the frame to more uniformly support the rear surface of the cover, so that the coupling state between the frame and the cover can be more stably maintained.

In addition, according to at least one of the embodiments of the present invention, since the protrusion protruding from the frame supports the cover while in contact with the back surface of the cover, when an external force is applied, the support is made without vibration occurring between the frame and the cover. can

In addition, according to at least one of the embodiments of the present invention, since the protrusion protruding from the frame supports the cover in a state spaced apart from the rear surface of the cover, support for external force can be achieved while maximizing the space between the frame and the cover.

In addition, according to at least one of the embodiments of the present invention, since the first opening is formed in the protrusion of the frame and the second opening is formed in the depression of the frame, the efficiency of removing foreign substances through the passage and discharge of water flow can be improved. have.

In addition, according to at least one of the embodiments of the present invention, since the first opening and the second opening are respectively formed along the radial direction from the center of the frame, foreign substances can be smoothly discharged along the radial direction when the pulsator rotates. .

In addition, according to at least one of the embodiments of the present invention, since the first opening formed in the protrusion portion of the frame is formed smaller than the second opening formed in the depression portion of the frame, a high-speed water flow passing through the first opening is reduced. 2 It is guided through the opening and foreign substances can be discharged smoothly.

In addition, according to at least one of the embodiments of the present invention, since the first opening formed in the protrusion of the frame is located inside the second opening formed in the depression of the frame, foreign substances in the central part of the pulsator are removed from the first opening. 2 May be washed away by water currents directed to the openings.

In addition, according to at least one of the embodiments of the present invention, since the plurality of through-holes are formed to pass through along the edge of the frame, the foreign substances remaining on the edge of the pulsator may be discharged.

Further scope of applicability of the present invention will become apparent from the following detailed description. However, it should be understood that the detailed description and specific embodiments such as preferred embodiments of the present invention are given by way of illustration only, since various changes and modifications within the spirit and scope of the present invention may be clearly understood by those skilled in the art.

1 is a perspective view showing a laundry treatment device according to an embodiment of the present invention.
FIG. 2 is a view showing a pulsator in the laundry treatment apparatus shown in FIG. 1 .
3 is a cross-sectional view showing a main configuration of a laundry treatment device according to an embodiment of the present invention.
4 is a plan view showing a pulsator according to an embodiment of the present invention.
5 is a rear view showing a pulsator according to an embodiment of the present invention.
6 is a view showing a frame in a state in which the cover is separated from the pulsator shown in FIG.
7 is a cross-sectional view taken along line A-A' shown in FIG. 4 .
FIG. 8 is a cross-sectional view taken along line B-B' shown in FIG. 4 .
FIG. 9 is a view showing in more detail the step and protrusion of the frame in FIG. 6 .
10 is a view showing a modified example of the frame in the pulsator according to an embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, in describing the present invention, descriptions of already known functions or configurations will be omitted in order to clarify the gist of the present invention.

1 is a perspective view showing a laundry treatment device according to an embodiment of the present invention. FIG. 2 is a view showing a pulsator in the laundry treatment apparatus shown in FIG. 1 . 3 is a cross-sectional view showing a main configuration of a laundry treatment device according to an embodiment of the present invention.

Hereinafter, a washing machine is taken as an example of the laundry treatment device 1000, but the laundry treatment device 1000 is a device that processes laundry (or dry matter) such as clothes put into the internal accommodation space, and is not limited to a washing machine, but a dryer or Specifies that it can also be a washer-drying machine.

1 to 3 , the laundry treatment apparatus 1000 according to an embodiment of the present invention includes a main body 10 , a washing tub 40 , and a pulsator 90 .

The main body 10 is a part in which an accommodation space is formed, and constitutes the main exterior of the laundry treatment device 1000 . In this case, the lower portion of the body 10 may be coupled to the base 20 and the upper portion to the top cover 30 , respectively.

The base 20 may be coupled to the lower portion of the main body 10 to stably support the main body 10 . The base 20 includes four legs 22 protruding downward from the bottom thereof, and the protruding lengths of each of the legs 22 can be adjusted.

In this case, by adjusting the protruding length of each of the legs 22, the base 20 and the main body 10 may be firmly mounted on the floor in a balanced state.

In this way, the base 20 and the legs 22 support the laundry treatment apparatus 1000 according to the present embodiment, and stably transmit the load to the floor surface so that the laundry treatment apparatus 1000 does not shake or incline. have.

The body 10 may be coupled to the base 20 . The body 10 may include a wall having a space formed therein and surrounding the side surface. Accordingly, accessories including the washing tub 40 or the drain unit 80 may be installed inside the main body 10 .

A top cover 30 may be coupled to the upper surface of the body 10 . The top cover 30 includes a door 32 that can be opened and closed. The door 32 may have a top-down shape, and may be hinged to the top cover 30 so as to be rotatable around one side.

In this case, when the door 32 is opened, the inside of the main body 10 , specifically, the washing tub 40 installed inside the main body 10 may be opened to be in a state in which laundry can be put in. And, when the door 32 is closed, the washing tub 40 is blocked from the outside.

The door 32 has a separate sensor attached to it, so that the operation of the washing tub 40 can be blocked while the door 32 is open, and can be automatically opened or closed, which is an example and the disclosure is applied. Depending on the example, it may be implemented in an appropriate form.

In addition, the control panel 34 may be provided at a position adjacent to the door 32 and easily identifiable by a user. The control panel 34 may include a display unit and a manipulation unit. The laundry processing apparatus 1000 according to the present embodiment may be operated through the operation of touching or pressing the operation unit, and the operation state and information may be checked through the display unit.

A washing tub 40 is installed in the receiving space of the main body 10 . In this case, the washing tub 40 may include an outer tub 41 and an inner tub 43 . That is, the washing tub 40 is installed inside the main body 10 to process the laundry accommodated therein. It may include an inner tank 43 that rotates in the direction or counterclockwise.

The outer tub 41 may be coupled to the main body 10 in a state in which the inner tub 43 is accommodated therein. In this case, the outer tank 41 may be coupled to the main body 10 through the support member 50 .

The support member 50 is provided with a damper 60 so that the outer shell 41 is supported by the main body 10, but a series of movements is possible. It can be attenuated and relieved through the damper 60 .

The outer tank 41 is composed of a bottom surface and a side wall, and water can be accommodated therein. The inner tank 43 rotates in the inner space of the outer tank 100 to form a current. The inner tub 43 includes an inlet 42 that is opened upward, is installed inside the outer tub 41 , and may have a bottom surface and sidewalls having a shape corresponding to the outer tub 41 .

The inner tub 43 may have a plurality of laundry holes formed on the sidewall. When the inner tub 43 rotates, a predetermined current may be formed according to the shape and arrangement of the laundry balls.

Specifically, when water is supplied, the washing water fills the inside of the outer tub 41 . Wash water inside the outer tub 41 may also flow into the inner tub 43 . When the inner tub 43 rotates during washing, the wash water accommodated in the outer tub 41 forms a series of water currents, and washing can be performed on the laundry put into the inner tub 43 by the water currents.

The inner tub 43 rotates by receiving rotational force from the driving unit 70 installed under the washing tub 40 , and the driving unit 70 may rotate the inner tub 43 in at least one direction.

Meanwhile, during dehydration, the drain valve 82 is opened and the water accommodated in the outer tank 41 is discharged to the outside through the drain valve 82 . When the inner tub 43 rotates while the drain valve 82 is open, the water contained in the laundry is discharged through the laundry holes formed in the inner tub 43 by centrifugal force and flows into the drain passage 84 .

In this case, the drain passage 84 may further include a separate drain pump 86 , and more smoothly discharge the water accommodated in the outer tank 41 and the inner tank 43 through the drain pump 86 . can do.

A pulsator 90 for forming a water current is installed on the lower surface of the inner tub 43 of the washing tub 40 . In addition, the pulsator 90 as well as the inner tank 43 can be driven by the above-described driving unit 70 .

The pulsator 90 can flow the wash water by agitating motion by forming a water flow in the inner tub 43 . Accordingly, washing may be performed on the laundry by a complex action such as a friction force between the wash water and the laundry, a friction force caused by the contact between the pulsator 90 or the inner tub 43 and the laundry, and an emulsification action of the detergent.

4 is a plan view showing a pulsator according to an embodiment of the present invention. 5 is a rear view showing a pulsator according to an embodiment of the present invention.

4 and 5 , the pulsator 90 according to an embodiment of the present invention includes a frame 100 and a cover 200 .

In the case of the washing tub 40 that accommodates laundry and performs washing, it is generally formed of a metal material with strong water resistance, in particular, stainless steel. Accordingly, it may be preferable to form the pulsator 90 installed in the washing tub 40 of stainless steel in terms of not only durability but also the balance with the washing tub 40 and improving the aesthetics of the appearance.

However, due to the characteristics of the pulsator 90 that must be formed in a plurality of concave-convex structures to generate a water flow, forming the entirety of the stainless steel may make it difficult to form as well as increase the manufacturing cost.

Accordingly, it may be preferable to manufacture the pulsator 90 by coupling the cover 200 of a thin plate made of stainless steel on the frame 100 made of a synthetic resin material.

Specifically, the frame 100 is formed with a plurality of protrusions 110 and depressions 120, so that the overall concave-convex structure of the pulsator 90 can be realized. In this case, the frame 100 may be manufactured by injection molding a synthetic resin material having a predetermined rigidity according to a designed shape.

The cover 200 is a thin plate made of a metal material coupled to the frame 100 , and may be processed into shapes corresponding to the protrusions 110 and the depressions 120 of the frame 100 described above. Accordingly, the concave-convex structure implemented in the frame 100 is reflected in the cover 200 as it is, so that the concave-convex structure of the overall pulsator 90 can be formed.

In this case, the cover 200 may be formed by plastically processing (eg, pressing) a metal plate of a certain thickness.

As described above, the pulsator 90 and the laundry treatment device 1000 including the same according to this embodiment assemble the frame 100 of synthetic resin and the cover 200 of stainless steel to manufacture the pulsator 90, While the connection with the washing tub 40 is made more stable, the sanitary, structural, and aesthetic improvement of the portion in contact with the laundry may be improved.

6 is a view showing a frame in a state in which the cover is separated from the pulsator shown in FIG. 7 is a cross-sectional view taken along line A-A' shown in FIG. 4 . FIG. 8 is a cross-sectional view taken along line B-B' shown in FIG. 4 . FIG. 9 is a view showing in more detail the step and protrusion of the frame in FIG. 6 .

6 to 9 , in the pulsator 90 according to an embodiment of the present invention, the frame 100 includes a stepped jaw 130 and a protrusion 140 . According to the structure of the frame 100 , a portion of the rear surface of the cover 200 is supported by the stepped protrusion 130 and the protrusion 140 , and the remaining portion of the rear surface of the cover 200 is spaced apart from the frame 100 .

Specifically, the stepped jaw 130 is a portion protruding from the edge of the frame 100 , and is formed to protrude toward the rear surface of the cover 200 coupled to the upper surface of the frame 100 . Accordingly, as shown in FIGS. 7 and 8 , the edge of the cover 200 is seated on the step 130 of the frame 100 .

The protrusion 140 is a portion protruding from the protrusion 110 of the frame 100 , and is formed to protrude toward the rear surface of the cover 200 coupled to the upper surface of the frame 100 , similarly to the step 130 described above. Accordingly, the rear portion of the cover 200 coupled to the protrusion 110 of the frame 100 is seated on the protrusion 140 .

As such, the rear surface of the cover 200 is supported at at least two points by the stepped protrusion 130 and the protrusion 140, so that the remaining portion of the rear surface of the cover 200 can maintain a spaced apart state from the upper surface of the frame 100. have.

That is, a predetermined separation space may be formed between the rear surface of the cover 200 and the upper surface of the frame 100 , and may act as a flow path through which washing water is guided along the separation space.

Wash water introduced into the pulsator 90 flows into the separation space, and the water flow formed in the separation space during the rotation of the pulsator 90 washes between the rear surface of the cover 200 and the upper surface of the frame 100 . . As shown in FIG. 5 , foreign substances generated in the cleaning process may be discharged through a first opening 111 , a second opening 121 , and a through hole 150 , which will be described later.

As described above, in the pulsator 90 and the laundry treatment apparatus 1000 including the same according to the present embodiment, the cover 200 coupled to the frame 100 is formed to protrude from the frame 100 with the stepped jaw 130 and Since the back surface of the cover 200 is spaced apart from the frame 100 by being supported by the protrusion 140 , it is possible to prevent contamination by depositing foreign substances between the frame 100 and the cover 200 .

On the other hand, although the projection 140 shows a configuration in which two pairs are formed on the protrusion 110 in the drawing, it is not necessarily limited thereto, and the formation of the projection 140 in consideration of the standard and structure of the pulsator 90 . The number may be variously modified.

In the pulsator 90 and the laundry treatment apparatus 1000 including the same according to an embodiment of the present invention, the stepped jaw 130 may be continuously formed along the edge of the frame 100 . That is, as shown in FIG. 6 , the stepped jaw 130 may be formed in a continuous circular band shape without being cut off at the edge of the frame 100 .

7 and 8, the shape of the pulsator 90 and the frame 100 is generally formed to have a relatively thick central portion and a relatively thin shape toward the rim.

Accordingly, the stepped shoulder 130 of the frame 100 has a relatively low rigidity, so there is a risk of deformation and damage due to external force, and such deformation and breakage may make the seating of the cover 200 unstable. .

On the other hand, in order to space the cover 200 and the frame 100 apart, the stepped jaw 130 protruding from the edge of the frame 100 may have a shape in which the thickness thereof is relatively expanded. However, if these stepped bumps 130 are formed intermittently instead of being integrally continuous, the thickness may be increased only in the corresponding portion, and may still be thin in the portion where the stepped bump 130 is not formed.

Therefore, when the stepped ridge 130 is formed on the edge of the frame 100, by forming it in a continuous circular band shape, the frame 100 not only increases the thickness of the edge but also increases the rigidity of the frame 100 so as to be integrated as a whole. effect can be exerted.

As described above, in the pulsator 90 and the laundry treatment apparatus 1000 including the same according to the present embodiment, the stepped jaw 130 is continuously formed along the edge of the frame 100 so that the frame 100 has a predetermined rigidity. Therefore, even when an external force is applied, deformation can be appropriately prevented by the rigidity of the frame 100 .

In the pulsator 90 and the laundry treatment apparatus 1000 including the same according to an embodiment of the present invention, the projection 140 may be symmetrically formed on both inclined surfaces of the protrusion 110 . That is, as shown in FIG. 6 , the protrusions 140 may protrude in a symmetrical shape on both sides with respect to the center line of the protrusion 110 .

As described above, when the cover 200 is coupled to the frame 100 , the cover 200 has a shape corresponding to the shape of the protrusion 110 and the recessed portion 120 of the frame 100 . is coupled to However, since a separation space is formed between the upper surface of the frame 100 and the rear surface of the cover 200 , relative displacement such as a slip may occur between the frame 100 and the cover 200 in a certain portion.

When this relative displacement occurs, the rotational force of the frame 100 may not be sufficiently transmitted to the cover 200 , so that washing efficiency for laundry may be reduced. Displacement needs to be minimized.

In this regard, at the edge of the frame 100 , the edge of the cover 200 may be uniformly supported in a certain portion by the stepped ridge 130 , and in the recessed portion 120 of the frame 100 , the cover 200 is actually In that it cannot support the rear surface of the frame 100 , uniform support at the protrusion 110 of the frame 100 may be more important.

Accordingly, it may be desirable to minimize the occurrence of relative displacement by allowing the protrusions 140 protruding from the frame 100 to more uniformly support the rear surface of the cover 200 .

As such, in the pulsator 90 and the laundry treatment device 1000 including the same according to the present embodiment, the protrusions 140 are symmetrically formed on both inclined surfaces of the protrusions 110 of the frame 100, Since the rear surface is more uniformly supported, the coupling state between the frame 100 and the cover 200 may be more stably maintained.

In the pulsator 90 and the laundry treatment apparatus 1000 including the same according to an embodiment of the present invention, the protrusion 140 may be formed to be in contact with the rear surface of the cover 200 . In this case, the protrusion 140 may protrude from the upper surface of the frame 100 by an interval of the spaced apart space and come into contact with the rear surface of the cover 200 .

Since the upper surface of the frame 100 is spaced apart from the rear surface of the cover 200 and the protrusion 140 supports the rear surface of the cover 200, an external force is applied to prevent the cover 200 from being pressed toward the frame 100. Even when the frame 100 and the cover 200 are separated from each other may be maintained.

As such, in the pulsator 90 and the laundry treatment apparatus 1000 including the same according to the present embodiment, the cover 200 in a state in which the protrusion 140 protruding from the frame 100 is in contact with the rear surface of the cover 200 . ), so that when an external force is applied, the support can be made without vibration between the frame 100 and the cover 200 .

On the other hand, in the pulsator 90 and the laundry treatment apparatus 1000 including the same according to an embodiment of the present invention, the projection 140 may be formed to be spaced apart from the rear surface of the cover 200 . In this case, the rear surface of the cover 200 may be spaced apart from the upper surface of the frame 100 by a length (or height) of the protrusion 140 protruding from the upper surface of the frame 100 .

The protrusion 140 may be spaced apart a predetermined distance from the rear surface of the cover 200 , in this case, the rear surface of the cover 200 is at the height of the protrusion 140 . The gap between the protrusion 140 and the rear surface of the cover 200 . It may be spaced apart from the upper surface of the frame 100 by a distance plus . Therefore, even if the cover 200 is pressed by an external force, it comes into contact with the upper surface of the frame 100 after a certain portion is pressed, thereby preventing further deformation.

As such, in the pulsator 90 and the laundry treatment apparatus 1000 including the same according to the present embodiment, the cover 200 in a state in which the protrusions 140 protruding from the frame 100 are spaced apart from the rear surface of the cover 200 . ), so that the space between the frame 100 and the cover 200 can be maximized while supporting the external force.

In the pulsator 90 and the laundry treatment apparatus 1000 including the same according to an embodiment of the present invention, the frame 100 is formed in the first opening 111 and the depression 120 formed in the protrusion 110 . A formed second opening 121 may be further included.

That is, as shown in FIGS. 5 , 6 and 9 , a first opening 111 penetrating both surfaces of the frame 100 is formed in a portion of the protrusion 110 of the frame 100 , and the frame 100 . ), a second opening 121 penetrating both surfaces of the frame 100 may be formed in a portion of the recessed portion 120 .

Accordingly, the water flow in the pulsator 90 is guided to the spaced apart space between the frame 100 and the cover 200 through at least one of the first opening 111 and the second opening 121, and then the first It may be discharged to the outside of the pulsator 90 through at least one of the opening 111 and the second opening 121 .

In the process as described above, foreign substances generated in the washing process and deposited inside the pulsator 90 may be discharged together to the outside of the pulsator 90 .

As such, in the pulsator 90 and the laundry treatment apparatus 1000 including the same according to the present embodiment, the first opening 111 is formed in the protrusion 110 of the frame 100 , and the frame 100 is recessed. Since the second opening 121 is formed in the part 120 , the efficiency of removing foreign substances through the passage and discharge of the water flow may be improved.

In the pulsator 90 and the laundry treatment apparatus 1000 including the same according to an embodiment of the present invention, the first opening 111 and the second opening 121 each have a radial direction from the center of the frame 100 . can be formed according to

That is, as shown in FIGS. 5 and 6 , the first opening 111 may be formed in a shape extending radially from the center of the frame 100 along the protrusion 110 . Also, the second opening 121 may be formed to radially extend from the center of the frame 100 along the depression 120 .

When the pulsator 90 rotates, the water flow induced into the pulsator 90 receives a centrifugal force, and accordingly, the water flow and foreign substances may be moved in a radial direction from the center of the pulsator 90 .

Accordingly, if the first opening 111 and the second opening 121 are formed along the radial direction from the center of the frame 100 , the water flow and foreign substances may be naturally discharged during the rotation of the pulsator 90 .

As such, in the pulsator 90 and the laundry treatment apparatus 1000 including the same according to the present embodiment, the first opening 111 and the second opening 121 are respectively formed along the radial direction from the center of the frame 100 . Since it is formed, foreign substances can be smoothly discharged along the radial direction when the pulsator 90 rotates.

In the pulsator 90 and the laundry treatment apparatus 1000 including the same according to an embodiment of the present invention, the first opening 111 may be formed to have a relatively smaller open area than the second opening 121 . .

That is, as shown in FIGS. 5, 6 and 9 , the open area of the first opening 111 formed in the protrusion 110 is smaller than the open area of the second opening 121 formed in the recessed portion 120 . The frame 100 may be manufactured.

In this way, when the opening areas of the first opening 111 and the second opening 121 are different, the flow velocity of the water flow induced into the pulsator 90 is at the first opening 111 and the second opening 121 . each may be different.

Specifically, the flow velocity of the water flow passing through the first opening 111 having a small open area may be relatively faster than the flow velocity of the water flow passing through the second opening 121 having a large open area.

Accordingly, the water flow moves from the first opening 111 with a high flow rate toward the second opening 121 with a low flow rate, and the water flow inside the pulsator 90 flows from the first opening 111 to the second opening 121 . ) can be directed toward

In particular, in that the protrusion 110 is formed at a position relatively higher than the depression 120 on the plane of the frame 100 , it is formed in the depression 120 from the first opening 111 formed in the protrusion 110 . It may be more preferable for the water flow to be induced in the direction of the second opening 121 in view of the efficiency of discharging foreign substances.

As such, in the pulsator 90 and the laundry treatment apparatus 1000 including the same according to the present embodiment, the first opening 111 formed in the protrusion 110 of the frame 100 is a recessed portion of the frame 100 . Since it is formed to be smaller than the second opening 121 formed in the 120 , a high-velocity water flow passing through the first opening 111 is guided to the second opening 121 , and foreign substances can be smoothly discharged.

In the pulsator 90 and the laundry treatment apparatus 1000 including the same according to an embodiment of the present invention, the distance L1 from the center of the frame 100 to the outside of the first opening 111 is the frame 100 . It may be formed to be relatively shorter than the distance L2 from the center of the second opening 121 to the periphery of the second opening 121 .

That is, as shown in FIG. 6 , the first opening 111 on the plane of the frame 100 may be formed to be relatively biased toward the center than the second opening 121 .

As described above, if the water flow induced into the pulsator 90 is induced in the direction from the first opening 111 to the second opening 121 , in consideration of the centrifugal force according to the rotation of the pulsator 90 , the first It may be preferable that the opening 111 is close to the center and the second opening 121 is close to the outer part.

In addition, if the first opening 111 and the second opening 121 are located at approximately the same distance from the center of the frame 100, the washing path for cleaning the inside of the water flow pulsator 90 is relatively short, so that foreign substances emission efficiency may be reduced.

Accordingly, the first opening 111 and the second opening 121 may be disposed to be displaced on a plane, but it may be preferable that the first opening 111 be disposed relatively inside the second opening 121 .

As such, in the pulsator 90 and the laundry treatment apparatus 1000 including the same according to the present embodiment, the first opening 111 formed in the protrusion 110 of the frame 100 is a recessed portion of the frame 100 . Since it is located inside the second opening 121 formed in 120 , foreign substances in the central part of the pulsator 90 can be washed away by the water flow from the first opening 111 to the second opening 121 .

In the pulsator 90 and the laundry treatment apparatus 1000 including the same according to an embodiment of the present invention, the frame 100 may further include a plurality of through-holes 150 penetrating along the edge.

That is, as shown in FIGS. 5, 6 and 9 , a plurality of through-holes 150 penetrating both sides of the frame 100 may be formed at the edge of the frame 100 .

When the foreign substances inside the pulsator 90 are washed away along the water flow through the above-described process, the foreign substances pushed up to the edge of the frame 100 are blocked by the stepped jaw 130 and the like, and there is a risk of being deposited without being discharged.

Therefore, it may be desirable to form a separate through-hole 150 in the rim of the frame 100 so that the foreign substances pushed up to the rim of the frame 100 are discharged to the outside of the pulsator 90 together with the water flow. have.

As described above, in the pulsator 90 and the laundry treatment apparatus 1000 including the same according to the present embodiment, a plurality of through holes 150 are formed through the frame 100 along the edge of the frame 100, so that the Foreign substances remaining on the edge may be discharged.

10 is a view showing a modified example of the frame in the pulsator according to an embodiment of the present invention.

In the case of the frame 100 shown in FIG. 10 , it is an embodiment that can be applied when the diameter is relatively small compared to the frame 100 shown in FIG. 6 .

That is, since the frame 100 according to the present embodiment has a relatively small diameter, the space between the frame 100 and the cover 200 is effective only with the stepped jaw 130 formed on the edge without a separate protrusion 140 . can be formed.

In the case of the pulsator 90 having a relatively small diameter, the bending deformation of the cover 200 is not relatively large, so only the rigidity of the cover 200 itself can maintain a spaced apart space from the frame 100, protrusions It can be said that the support of the cover 200 through the 140 is not essential.

In addition, since a relatively large rigidity is not required, the size of the first opening 111 or the second opening 121 may be increased, and the number of the through holes 150 may also be increased.

However, as described above, with respect to the configuration of inducing a water flow into the space between the frame 100 and the cover 200 to discharge foreign substances, the frame 100 shown in FIG. 10 and the frame 100 shown in FIG. ), since the main features are the same or similar, a detailed description of the overlapping content will be omitted.

In the foregoing, specific embodiments of the present invention have been described and shown, but it is common knowledge in the art that the present invention is not limited to the described embodiments, and that various modifications and variations can be made without departing from the spirit and scope of the present invention. It is self-evident to those who have Accordingly, such modifications or variations should not be individually understood from the technical spirit or point of view of the present invention, and modified embodiments should be considered to belong to the claims of the present invention.

10: body 40: washing tub
41: outer assistant 43: inner assistant
90: pulsator 100: frame
110: protrusion 111: first opening
120: recessed portion 121: second opening
130: stepped jaw 140: protrusion
150: through hole 200: cover
1000: laundry treatment device

Claims (18)

a frame in which a plurality of protrusions and depressions are formed by injection; and
Including; a cover made of a metal material coupled to the frame;
the frame is
A stepped jaw protruding from the edge and
Including a protrusion formed to protrude from the protrusion,
A portion of the rear surface of the cover is supported by the step and the protrusion so that the remaining portion of the rear surface of the cover is spaced apart from the frame. According to claim 1,
The stepped jaw is continuously formed along the edge of the frame, pulsator. 3. The method of claim 2,
The protrusion is symmetrically formed on both inclined surfaces of the protrusion, pulsator. 4. The method of claim 3,
The projection is formed in contact with the rear surface of the cover, pulsator. 4. The method of claim 3,
The protrusion is formed to be spaced apart from the rear surface of the cover, the pulsator. 6. The method according to any one of claims 1 to 5,
the frame is
a first opening formed in the protrusion; and
Further comprising a second opening formed in the depression, pulsator. 7. The method of claim 6,
The first opening and the second opening are each formed along a radial direction from the center of the frame, the pulsator. 8. The method of claim 7,
The first opening is formed to have a relatively smaller open area than the second opening, the pulsator. 9. The method of claim 8,
The distance (L1) from the center of the frame to the outside of the first opening is formed relatively shorter than the distance (L2) from the center of the frame to the outside of the second opening, the pulsator. 10. The method of claim 9,
the frame is
The pulsator further comprising a plurality of through-holes that are formed to pass through along the rim. a body having a receiving space therein;
a washing tub installed in the receiving space of the main body; and
Including; a pulsator that is rotatably installed in the lower part of the washing tub;
The pulsator is
a frame in which a plurality of protrusions and depressions are formed by injection; and
and a cover made of a metal material coupled to the frame;
the frame is
A stepped jaw protruding from the edge and
Including a protrusion formed to protrude from the protrusion,
A portion of the rear surface of the cover is supported by the step and the protrusion so that the remaining portion of the rear surface of the cover is spaced apart from the frame. 12. The method of claim 11,
The washing machine
an outer tank that receives the supplied washing water; and
Including an inner tank that is rotatably installed inside the outer tank,
The pulsator is installed to form a water flow in the lower portion of the inner tub, laundry treatment equipment. 13. The method of claim 12,
The frame is made of a synthetic resin material,
The cover is made of stainless steel, laundry treatment equipment. 14. The method according to any one of claims 11 to 13,
the frame is
a first opening formed in the protrusion; and
The laundry treatment machine further comprising a second opening formed in the depression. 15. The method of claim 14,
The first opening and the second opening are each formed along a radial direction from the center of the frame, the laundry treatment machine. 16. The method of claim 15,
The first opening is formed to have a relatively smaller open area than the second opening, the laundry treatment machine. 17. The method of claim 16,
The distance (L1) from the center of the frame to the outside of the first opening is formed to be relatively shorter than the distance (L2) from the center of the frame to the outside of the second opening, the laundry treatment machine. 18. The method of claim 17,
the frame is
The laundry treatment device further comprising a plurality of through-holes that are formed to pass through along the edge.

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