JP6880163B2 - Laundry processing equipment - Google Patents

Description

Mutual reference to related applications This application was filed with the Korean Intellectual Property Office on February 1, 2019, and was submitted to the Korean Intellectual Property Office on February 1, 2019. Claims the benefit of priority to Korean Patent Application No. 10201090135451 submitted to the Intellectual Property Office named "Washing Disposal Equipment", all of which disclosures are incorporated herein by reference.

The present disclosure relates to a washing treatment apparatus having a rotating drum provided with a lifter.

Korea Utility Model Registration No. 20-0358903 discloses a washing machine having a drum with a lifter. A hook protrudes from one surface of the lifter, and a hook through hole is formed in the drum, and the hook is caught in the hook through hole.

The hook includes a neck extending from the lifter body and a head extending from the end of the neck so as to have a width wider than the neck. The lifter is installed so that the head is hooked on the outer surface of the drum with the neck located in the hook through hole.

However, in order to injection mold the lifter having the hook as described above, the mold is configured to form an upper mold configured to form the upper surface of the lifter body and a lower surface of the lifter body. Including lower mold. However, since a part of the head overlaps the lifter body vertically, there is a drawback that undercut occurs.

Korea Utility Model Registration No. 20-0358903 Gazette

In the aspect of the present disclosure, the lifter provided on the drum includes a lifter frame connected to the drum and a lifter cover configured to cover the lifter frame, and a washing process capable of easily forming the lifter frame by injection molding. To provide the device.

The embodiments of the present disclosure are not limited to those described above, and other embodiments not described above can be clearly understood by those skilled in the art from the following description. Then, one aspect of the present invention is as follows.
[One aspect of the present invention]
[1] A washing processing device
A drum that has a mounting slot and is configured to rotate around a rotation axis that extends in the front-back direction.
A lifter arranged on the inner peripheral surface of the drum and configured to rotate about the rotation axis when the drum rotates is provided.
The lifter is
A lifter frame attached to the inner peripheral surface of the drum and
A frame cover that is connected to the lifter frame and projects inward in the radial direction from the inner peripheral surface of the drum is provided.
The lifter frame is
A frame base that is coupled to the inner peripheral surface of the drum and is formed in the form of a closed curve formed by a single line.
A frame top plate arranged at a distance from the frame base in a direction toward the inside of the drum and whose horizontal projection surface is arranged in the closed curve of the frame base.
A frame side wall configured to connect the frame upper plate and the frame base, and having a lateral through hole formed by penetrating a part of the frame side wall.
An insertion projection configured to be inserted into the mounting slot and comprising a vertical portion extending downward from the bottom surface of the frame base and a catching portion bent inward of the closed curve at the lower end of the vertical portion. , With
The horizontal projection surface of the catching portion is a washing processing device located on the horizontal projection surface of the lateral through hole.
[2] The side wall of the frame is
The left side of the side wall configured to connect the left side of the frame base and the upper plate of the frame, and the left side portion of the side wall.
The right side of the frame base and the right side wall portion configured to connect the top plate of the frame are provided.
The washing treatment apparatus according to [1], wherein the lateral through hole is formed in at least one of the left side wall portion and the right side wall portion.
[3] The washing treatment apparatus according to [2], wherein at least one of the left side wall portion and the right side wall portion is connected to the frame base while defining an acute angle with respect to the frame base.
[4] The washing treatment apparatus according to [3], wherein the left side wall portion and the right side wall portion are symmetrical with each other with respect to the longitudinal direction along the longitudinal direction of the frame base.
[5] The horizontal projection surface of the collection portion, except for a portion connected to the vertical portion, is separated from the edge of the horizontal projection surface of the lateral through hole, according to [1]. Laundry processing equipment.
[6] The lifter frame is further provided with a water passage hole formed in the side wall of the frame so that the inside and the outside of the lifter frame communicate with each other.
The washing treatment apparatus according to [1], wherein the lateral through hole is relatively smaller than the water passage hole.
[7] The washing treatment apparatus according to [1], wherein the frame cover is made of metal.
[8] The washing processing apparatus according to [7], wherein the frame base has a seating groove into which the lower end of the frame cover is inserted when the frame base is coupled to the frame cover.
[9] The washing process according to [8], wherein the seating groove extends in a closed curve along the periphery of the frame base, and the horizontal projection surface of the capturing portion is located within the closed curve of the seating groove. apparatus.
[10] The washing according to [9], wherein the connecting tab protrudes from the lower end of the frame cover, and a tab connecting port into which the connecting tab is inserted is formed in the seating groove when the frame cover is connected. Processing equipment.
[11] The mounting slot is
An insertion portion S1 having a width W1 through which the cross section of the capture portion passes, and an insertion portion S1.
The washing processing apparatus according to [1], comprising a joint portion S2 extending forward or rearward from the insertion portion and having a width W2 smaller than the width of the insertion portion.
[12] The lifter frame further includes a fastening boss that projects from the inner surface of the lifter frame toward the inner peripheral surface of the drum.
The washing processing apparatus according to [1], wherein a fastening hole is formed in the drum, and the fastening boss and the fastening hole are fastened to each other by a fastening member.
[13] The lifter is
A plurality of front lifters arranged in the circumferential direction of the drum, and
The washing processing apparatus according to [1], comprising a plurality of rear lifters arranged in the circumferential direction of the drum behind each front lifter.
[14] A connecting tab protrudes from the lower end of the frame cover.
The washing processing apparatus according to [1], wherein the lifter frame has a tab coupling port into which the connecting tab is inserted when the lifter frame is coupled to the frame cover.
[15] The frame base includes left and right side surfaces extending in the front-rear direction and formed parallel to each other.
The insertion protrusions are formed on the left side and the right side, respectively.
The catching portion of the insertion protrusion formed on the left side is bent to the right from the vertical portion.
The washing treatment apparatus according to [1], wherein the catching portion of the insertion protrusion formed on the right side is bent to the left from the vertical portion.
[16] A washing processing device
A drum that has a mounting slot, receives laundry, and is configured to rotate about a predetermined axis of rotation that extends in the front-back direction.
A lifter arranged on the drum and configured to lift the laundry in the drum as the drum rotates.
The lifter is
A synthetic resin lifter frame adjacent to the inner surface of the drum and having a frame base having an opening, an insertion protrusion configured to protrude from the bottom surface of the frame base and be inserted into the mounting slot, and the frame. A frame sidewall that extends upward from the sidewall and is configured to cover at least a portion of the opening.
A frame cover configured to cover the outside of the lifter frame is provided.
The insertion protrusion
A vertical portion extending downward from the bottom surface of the frame base,
A catching portion that is bent from the lower end of the vertical portion toward the inside of the opening.
A washing treatment apparatus in which a lateral through hole in which the catching portion is located is formed on the side wall of the lifter when viewed vertically downward from above.

In the washing processing apparatus according to the present disclosure, the drum into which the laundry is inserted rotates around a predetermined rotation axis extending in the front-rear direction, and when the drum rotates, the lifter provided on the drum removes the laundry in the drum. lift.

The lifter includes a lifter frame and a lifter cover. The outside of the lifter frame is covered with a lifter cover.

The lifter frame is made of synthetic resin and is adjacent to the inner surface of the drum and has an opening, a frame base having an opening, an insertion protrusion protruding from the bottom surface of the frame base, and at least one of the openings extending upward from the frame base. Includes a frame side wall that is configured to cover the portion.

A mounting slot is formed in the drum, and an insertion protrusion is inserted into the mounting slot. The insertion protrusion includes a vertical portion extending downward from the bottom surface of the frame base and a catching portion bent toward the inside of the opening at the lower end of the vertical portion.

The side wall of the lifter has a lateral through hole in which the catching portion is located when viewed vertically downward from above.

The frame side wall may include a left side wall connected to the left side of the frame base and a right side wall connected to the right side of the frame base.

The lateral through hole may be formed in at least one of the left side wall portion and the right side wall portion.

At least one of the left side wall and the right side wall may define an acute angle with respect to the frame base. The left side wall and the right side wall may be symmetrical with each other.

When the lifter frame is viewed from above vertically, the outer circumference of the catching portion may be separated from the edge of the lateral through hole except for the portion connected to the vertical portion.

The frame cover may be made of metal. The frame base may have a seating groove on which the lower end of the frame cover is seated. The seating groove may extend annularly along the perimeter of the opening, and the catching portion may be located in an inner portion surrounded by the seating groove.

A connecting tab may be formed at the lower end of the frame cover, or a tab connecting port through which the connecting tab passes may be formed in the seating groove.

The mounting slot may include an insertion portion S1 having a width W1 through which the capture portion passes, and a coupling portion S2 extending forward or rearward from the insertion portion and having a width W2 smaller than the width of the capture portion.

The lifter frame is arranged at a position separated from the frame base in the radial direction of the drum, and may further include a frame upper plate connected to the frame base via the frame side wall and a fastening boss protruding from the bottom surface of the frame upper plate. Good. The drum may have a fastening hole that is fastened to the fastening boss by a predetermined fastening member.

The pair of lifters may be separated from each other in the front-rear direction of the drum.

The frame base may include left and right sides extending in the anteroposterior direction and formed parallel to each other. A tabbed port may be formed on at least one of the left or right side, and a connecting tab configured to be inserted into the tabbed port may be formed at the lower end of the lifter cover.

Insertion protrusions may be formed on the left side and the right side, respectively. The catching portion of the insertion protrusion formed on the left side may be bent to the right from the vertical portion, and the catching portion of the insertion protrusion formed on the right side may be bent to the left from the vertical portion.

According to the washing treatment apparatus according to the present disclosure, which includes a lifter frame in which a lifter is connected to a drum and a lifter cover configured to cover the lifter frame, an upper mold for molding forming an upper surface of an insertion protrusion. A lateral through hole from which the mold portion can be pulled out is formed in the lifter frame and vertically above the insertion protrusion configured to be fixed to the drum. As a result, the work of opening the mold can be smoothly performed, and undercutting can be prevented.

Further, according to the washing treatment apparatus according to the present disclosure, the washing water can flow between the inside and the outside of the lifter frame through the lateral through hole. Therefore, the insertion protrusions arranged so as to correspond to the lateral through holes can be effectively cleaned.

Further, according to the washing treatment apparatus according to the present disclosure, since both the water passage hole and the lateral through hole are formed on the side wall of the frame, the water passage hole is formed relatively large and the lateral through hole is relatively large. Can be formed small. Therefore, the water passage hole and the lateral through hole can effectively exert their own functions, and the decrease in structural rigidity due to the presence of the plurality of holes can be reduced.

The above and other aspects, features, and advantages of the present disclosure will become apparent from the detailed description of the following aspects in conjunction with the accompanying drawings.

It is sectional drawing of the washing processing apparatus by an exemplary embodiment of this disclosure. It is a perspective view of the lifter shown in FIG. It is an exploded perspective view of the lifter shown in FIG. It is a plane projection view of the lifter shown in FIG. It is a figure which shows the raw material (a) cut for manufacturing a large-capacity drum, and the raw material (b) which was cut for manufacturing a small-capacity drum. It is an enlarged view (a) of a part of the drum corresponding to the part A shown in FIG. 5, and the enlarged view (b) of a part of the drum corresponding to the part B shown in FIG. It is an enlarged view (a) of the B part of the drum shown in FIG. 5 (a), and is the enlarged view (b) of the C part of the drum shown in FIG. 5 (b). It is a top view of the lifter frame. It is a bottom view of a lifter frame. It is sectional drawing along the line AA shown in FIG. It is a front view of a lifter frame. It is a side view of a lifter frame. It is a top view of the frame cover. It is a front view of a frame cover. It is a side view of a frame cover. It is a figure which shows the pair of front and rear lifters shown in FIG. It is a figure which looked at the lifter shown in FIG. 16 from the front. FIG. 1A is a view showing a state in which the drum shown in FIG. 1 is deployed, and FIG. 1B is a developed view of a drum in which a lifter according to another exemplary embodiment of the present disclosure is arranged. A diagram (a) showing a change in the height of the first fabric caused by the rear lifter according to the rotation angle of the drum, and a diagram (b) showing a change in the height of the second fabric caused by the front lifter paired with the rear lifter. ). It is a figure which shows the inner peripheral surface of the drum which has a mounting slot by a modification, (a) shows a small capacity drum, and (b) shows a large capacity drum. It is a figure which shows the other exemplary embodiment of a lifter.

The advantages and features of the present disclosure, as well as the methods for achieving them, will become apparent from the exemplary embodiments described below with reference to the accompanying drawings. However, the present disclosure is not limited to the exemplary embodiments disclosed herein and may be implemented in a variety of different forms. Exemplary embodiments are provided to ensure thorough description of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art. It should be noted that the scope of this disclosure is defined only by the claims.

The shapes, sizes, ratios, angles, and number of elements shown in the drawings are merely exemplary and therefore the present disclosure is not limited to the details illustrated. Similar reference numbers refer to similar elements throughout the specification.

If it is determined that a detailed description of the relevant known art in connection with the description of the present disclosure unnecessarily obscures the gist of the present disclosure, the detailed description may be omitted.

The terms used herein are for illustration purposes only and are not intended to be limiting. As used herein, the singular forms "a", "an", and "the" may be intended to include the plural unless the context explicitly indicates otherwise. Although the terms "equal", "equal", "contain", and "have" are inclusive and thus specify the presence of the stated features, integers, steps, operations, elements, and / or components. Does not preclude the existence or addition of one or more other functions, integers, steps, operations, elements, components, and / or groups thereof. The steps, processes, and operations of the methods described herein should not necessarily be construed as requiring performance in the particular order discussed or illustrated, unless specifically specified as the order of performance. It should also be understood that additional or alternative steps can be used.

An element or layer is "on", "engaged to", "connected to", or "coupled to" another element or layer. When referred to, other elements or layers may be in direct contact, engaged, connected or coupled, or there may be intervening elements or layers. In contrast, one element is "directly on", "directly engaged to", "directly connected to", or "directly connected to" another element or layer. When referred to as "directly coupled to", there may be no intervening elements or layers. Other words used to describe the relationships between the elements need to be interpreted in a similar way (eg, "between" as opposed to "directly between", " Adjacent to (adjacent), such as "directly adjacent"). As used herein, the term "and / or" includes any combination of one or more of the related listed items.

The terms "connected" and "bonded" are not limited to physical or mechanical connections or connections, but electrical connections or connections, whether direct or indirect. Can include. The connection may be such that the object is permanently connected or releasably connected. The term "communicatively coupled" is defined as being connected directly or indirectly through intervening components, the connection of which is not necessarily limited to a physical connection. A connection that corresponds to the transfer of data, fluid, or other matter between the components described as described above.

In the present specification, various elements, components, regions, layers, and / or parts may be described using terms such as first, second, and third, and these elements, components, etc. Regions, layers, and / or parts should not be limited by these terms. These terms may only be used to distinguish one element, component, area, layer or part from another area, layer or part. As used herein, terms such as "first", "second" and other numerical terms do not mean order or order unless explicitly stated in the context. Thus, the first element, component, region, layer or portion described below can be referred to as the second element, component, region, layer or portion without departing from the teachings of the exemplary embodiments. ..

"Inner", "outer", "beneath", "lower", "lower", "above", "upper" Spatial relative terms such as are used herein to describe the relationship between one element or function and another element or function shown in the figure for simplicity of explanation. May be done. Spatial relative terms may be intended to include various orientations of the device in use or in operation, in addition to the orientations shown in the figure. For example, when the device in the figure is turned over, elements that are "below" or "below" the other element or function are placed "above" the other element or function. Therefore, examples of the term "downward" can include both upward and downward orientations. The device may be otherwise oriented (rotated 90 degrees or in any other direction) and the spatially relative descriptors used herein can be interpreted accordingly.

As used herein, the term "or" shall be construed as inclusive or shall mean any one or any combination. Thus, "A, B, or C" means any of "A, B, C, A and B, A and C, B and C, A, B and C". Exceptions to this definition only occur if the combination of elements, functions, steps, or actions is somehow essentially mutually exclusive.

Hereinafter, the washing machine will be described as an example of the washing processing device, but the washing processing device is not limited to the washing machine. The washing processing device is a device for processing laundry (or an object to be dried) such as clothes put into the drum 51, and may be a dryer or a washer / dryer.

Referring to FIG. 1, the washing treatment apparatus according to the exemplary embodiment of the present invention is configured to have a casing 13 configured to define the outside and to be arranged in the casing 13 to store wash water. It may include a water tank 31, a washing tub 50 rotatably installed in the water tank 31 and configured to accommodate the inserted laundry, and a motor 25 configured to rotate the washing tub 50. .. The casing 13 may be provided with a damper 16 configured to absorb the vibration of the water storage tank 31.

The drum 51 may be rotated about a rotation axis O extending in the front-rear direction, and the drum 51 may form a washing tub 50. The axis of rotation is almost horizontal. However, strictly speaking, the term "horizontal" does not mean "geometrically horizontal". As shown in FIG. 1, even if the inclination is formed at an angle with respect to the horizontal axis, if the inclination is closer to the horizontal axis than the vertical axis, the drum 51 or the washing tub 50 rotates about the horizontal axis. It can be said that.

A laundry insertion port is formed on the front surface of the casing 13, and a door 21 configured to open and close the laundry insertion port may be rotatably provided on the casing 13. A tubular gasket 22 is provided so that the laundry insertion port and the inlet of the water storage tank 31 communicate with each other. The gasket 22 is made of a soft material (eg rubber). The front end of the gasket 22 may be connected around the laundry insertion port of the casing 13, and the rear end of the gasket 22 may be connected around the inlet of the water storage tank 31.

A water supply valve 33, a water supply pipe 34, and a water supply hose 37 may be installed in the casing 13. When the water supply valve 33 is opened to supply the washing water, the washing water that has passed through the water supply pipe 34 is mixed with the detergent in the dispenser 35 that stores the detergent, and then the washing water is supplied to the water tank 31 via the water supply hose 37. Will be supplied.

The input port of the pump 24 is connected to the water storage tank 31 via the drain hose 17, and the discharge port of the pump 24 is connected to the drain pipe 19. The water discharged from the water storage tank 31 via the drain hose 17 is pumped up by the pump 24, flows through the drain pipe 19, and then is discharged to the outside of the washing treatment device.

The washing tub 50 may include a drum 51, a front cover 52 coupled to the front end of the drum 51, and a rear cover 53 coupled to the rear end of the drum 51. The drum 51 is in the form of a tubular (or cylindrical) body formed by winding up a metal plate (for example, stainless steel) having a plurality of through holes 51h (see FIG. 5) and joining both ends of the metal plate. It may be formed. The water stored in the water storage tub 31 can be introduced into the washing tub 50 through the through hole 51h. A plurality of embossed portions 51a (see FIG. 5) formed convexly by plastic working may be formed on the inner peripheral surface of the drum 51, or through holes 51h may be formed between the embossed portions 51a. ..

The front cover 52 may be provided with an opening so that laundry can be inserted into the drum 51. The entrance of the water storage tank 31 communicates with the opening. The front cover 52 may be made of the same type of material as the drum 51.

The rear cover 53 may close the open rear side of the drum 51, and a spider 26 connected to the drive shaft 25a of the motor 25 may be connected to the rear surface of the rear cover 53. The spider 26 is configured to transmit the rotational force of the drive shaft 25a to the washing tub 50, and the drive shaft 25a of the motor 25 may be connected to the center of the spider 26.

The drum 51 is provided with a plurality of lifters 61a, 61b, 62a, 62b, 63a, and 63b. When the drum 51 rotates, the laundry is lifted by the lifters 61a, 61b, 62a, 62b, 63a, 63b.

The plurality of lifters 61a, 62a, 63a include a first lifter and a second lifter arranged in the front-rear direction of the drum 51. Hereinafter, an example will be described in which the first lifter is the front lifters 61a, 62a, and 63a, and the second lifter is the rear lifters 61b, 62b, and 63b separated rearward from the front lifter. However, depending on the embodiment, the first lifter may be the rear lifter and the second lifter may be the front lifter.

With reference to FIGS. 1 and 18, the plurality of front lifters 61a, 62a, and 63a, together with the plurality of rear lifters 61b, 62b, and 63b, define a set (or pair), respectively. The three sets of lifters 61 (61a and 61b), 62 (62a and 62b), and 63 (63a and 63b) may be arranged at equal angles around the axis of rotation O, but the present disclosure is not necessarily limited thereto. Not done. For example, four sets of lifters may be arranged at intervals of 90 degrees around the rotation axis O, or five sets of lifters may be arranged at intervals of 72 degrees.

Hereinafter, an example in which the front lifters 61a, 62a, 63a and the rear lifters 61b, 62b, 63b have the same structure will be described, but the present disclosure is not necessarily limited to this.

With reference to FIGS. 2 to 4, each of the lifters 61a, 61b, 62a, 62b, 63a, and 63b has a lifter frame 620 fixed to the drum 51 and a frame cover 640 configured to cover the lifter frame 620. And include. The frame cover 640 projects radially inward (inside the drum 51) from the inner peripheral surface of the drum 51 and comes into contact with the laundry. The frame cover 640 is fixed to the drum 51 by the lifter frame 620 instead of being directly fixed to the drum 51.

The lifter frame 620 may be made of synthetic resin. The lifter frame 620 is preferably formed by injection molding, but the present disclosure is not limited thereto.

The metal lifter is not only strong, but also luxurious and hygienic. To connect the lifter directly to a metal drum, it is necessary to weld the lifter to the raw material cut out in the shape of an unfolded drum, wind the raw material into a cylinder, and then weld both ends of the raw material facing each other. is there. However, the flat raw material is curved in the process of winding the raw material, and as a result, stress is applied to the welded portion between the lifter and the drum, and the welded portion may be peeled off.

To address this concern, the present disclosure proposes a configuration in which the metal frame cover 640 is secured to the drum 51 by a synthetic resin lifter frame 620.

On the other hand, referring to FIGS. 3 and 8 to 12, the entire outer surface 620a (see FIG. 8) of the lifter frame 620 has a convex shape, and the inner surface 620b (see FIG. 9) of the lifter frame 620 has a concave shape. Specifically, the lifter frame 620 may include a frame base 621, a frame top plate 623, and a frame side wall 622.

The frame base 621 is fixed to the inner peripheral surface of the drum 51. The frame base 621 may have a ring shape (or a closed shape formed by a single wire) with an open central portion.

The frame upper plate 623 is separated from the frame base 621 in the direction toward the inside of the drum 51, and is connected to the frame base 621 by the frame side wall 622. The frame side wall 622 may be formed in the form of a tubular (or cylindrical) body such that the lower end of the frame side wall 622 is connected to the frame base 621 and the upper end of the frame side wall 622 is connected to the frame top plate 623. Good.

The contour of the cross section of the frame side wall 622 gradually decreases upward (or in the radial direction of the drum 51) from the lower end connected to the frame base 621 (or gradually decreases in the direction away from the inside of the drum 51). It is a shape, and the contour of the cross section is the smallest at the portion where it meets the frame upper plate 623.

One or more water flow inflow holes may be formed in the drum 51 so that the washing water stored in the water storage tank 31 is introduced into the frame cover 640. The opening formed in the area covered by the frame cover 640 may be a water flow inflow hole. For example, some of the through holes 51h located inside the frame cover 640 may be water flow inflow holes. Further, the mounting slots 511a and 511b, the fastening holes 513a and 513b, and the openings 512a and 512b, which will be described later, may be water flow inflow holes.

One or more water passage holes 624 and 624a may be formed in the lifter frame 620. Any opening may be a water passage hole 624 as long as an opening is formed in the lifter frame 620 and the inside and the outside of the lifter frame 620 communicate with each other.

The water passage hole 624 may be formed in the frame side wall 622 and / or the frame top plate 623. The wash water stored in the concave space of the lifter frame 620 can be discharged through the water passage hole 624.

One or more drain holes 646h may be formed in the frame cover 640 in order to drain the washing water in the lifters 61a, 61b, 62a, 62b, 63a, and 63b into the drum 51. The washing water in the concave space in the lifter frame 620 passes through the water passage hole 624 and then is discharged into the drum 51 through the drain hole 646h.

The outer surface 640a of the frame cover 640 exposed to the inside of the drum 51 and in contact with the laundry has a convex shape, and the inner surface of the frame cover 640 has a concave shape corresponding to the convex outer surface 620a of the lifter frame 620. The frame cover 640 can be made of metal, preferably stainless steel, but the present disclosure is not limited thereto. The frame cover 640 may be formed by plastic working (for example, pressing) a metal plate having a predetermined thickness.

The frame cover 640 may include a cover side wall 645 extending upward from the lower end adjacent to the frame base 621 and a cover top plate 646 configured to cover the upper side of the cover side wall 645. The cover top plate 646 is substantially parallel to the frame top plate 623. The plurality of drain holes 646h may be formed in the cover upper plate 646.

The cover side wall 645 has a shape in which the contour of the cross section gradually decreases upward (or in the radial direction of the drum 51) from the lower end (or gradually decreases in the direction away from the inner peripheral surface of the drum 51). The contour of is minimized at the part where it meets the cover top plate 646.

The lifter frame 620 includes a spacer 625 protruding from the frame top plate 623 so that the frame cover 640 can be separated from the frame top plate 623. The spacer 625 projects from the frame upper plate 623 to the inner surface of the frame cover 640.

The inner surface of the frame cover 640 may be separated from the frame upper plate 623 to a extent equal to or greater than the length (or height) of the spacer 625 protruding from the frame upper plate 623. The spacers 625 may be spaced apart from the inner surface of the frame cover 640 at predetermined distances. In this case, the inner surface of the frame cover 640 is separated from the frame upper plate 623 by a distance equal to the sum of the height of the spacer 625 and the distance between the spacer 625 and the inner surface of the frame cover 640. When the frame cover 640 is pushed by an external force, the frame cover 640 comes into contact with the frame top plate 623 to prevent the frame cover 640 from being further deformed.

Alternatively, depending on the embodiment, the spacer 625 may be configured to be in contact with the frame cover 640. In this case, the spacer 625 protrudes from the outer surface 620a of the lifter frame 620 and is adjacent to the inner surface of the frame cover 640. Since the spacer 625 supports the inner surface of the frame cover 640 in a state where the frame upper plate 623 is separated from the frame cover 640, even if the frame cover 640 is pushed toward the lifter frame 620 by an external force, the frame cover 640 is on the frame. A state separated from the plate 623 can be maintained.

The spacer 625 may have a cruciform rib structure. Specifically, the spacer 625 may include a vertical rib 625a extending in the longitudinal direction (or anteroposterior direction) of the lifter frame 620 on the frame upper plate 623 and a horizontal rib 625b extending across the vertical rib 625a. The vertical ribs 625a and the horizontal ribs 625b may be orthogonal to each other.

Referring to FIG. 10, the inner surface of the cover upper plate 646 may be separated from the outer surface of the frame upper plate 623. That is, a predetermined separation space (or gap g1) may be formed between the inner surface of the cover upper plate 646 and the outer surface of the frame upper plate 623, and the separation space g1 guides the washing water to the drain hole 646h. Can function as a road.

A separation space g2 may be formed between the frame side wall 622 and the cover side wall 645. A seating groove 621r (see FIGS. 8 and 9) described later is formed in the frame base 621, and the seating groove 621r is arranged at a position toward the outside of the frame base 621 separated from the frame side wall 622 by a predetermined distance. .. Therefore, the lower end of the cover side wall 645 arranged in the seating groove 621r is separated from the frame side wall 622. Since the lower end of the frame cover 640 is separated from the frame side wall 622 by the seating groove 621r and the cover upper plate 646 is separated from the frame upper plate 623 by the spacer 625, it is supported by the lower end of the frame cover 640 and the spacer 625. The two points of the frame cover 640, which is the part of the frame cover 640, are forcibly separated from the lifter frame 620, and as a result, the cover side wall 645 located between the two points is maintained in a state of being separated from the lifter frame 620. Will be done.

The wash water introduced into the lifters 61a, 61b, 62a, 62b, 63a, and 63b is introduced into the separation spaces g1 and g2, and the water flow formed in the separation spaces g1 and g2 during the rotation of the washing tub 50 Clean the outer surface of the lifter frame 620 and the inner surface of the frame cover 640. The foreign matter generated in the cleaning process is discharged through the drain hole 646h formed in the frame cover 640 or through the water flow inflow hole formed in the drum 51. Separation spaces g1 and g2 form a flow path between the lifter frame 620 and the frame cover 640, so that this configuration keeps the lifters 61a, 62a, 63a, 61b, 62b, and 63b clean. Can be advantageous for.

The frame cover 640 may have domes 641, 642, 643, and 644 formed at positions corresponding to the spacer 625. That is, the spacer 625 may be placed under the domes 641, 642, 643, and 644. When the plurality of spacers 625 are formed in the exemplary embodiment, the plurality of domes 641, 642, 643, and 644 may be formed at positions corresponding to the plurality of spacers 625, respectively.

Domes 641, 642, 643, and 644 may be formed on the cover top plate 646. The inner surface of each dome 641, 642, 643, and 644 facing the spacer 625 may be formed concave, and the outer surface of each dome 641, 642, 643, and 644 may be formed convex. The concave inner surfaces of the domes 641, 642, 643, and 644 may each contact the spacer 625.

The domes 641, 642, 643, and 644 are formed in a convex shape by pressing the metal cover upper plate 646. The plurality of domes 641, 642, 643, and 644 may be arranged in the longitudinal direction of the cover top plate 646 (or in the longitudinal direction of the lifters 61a, 61b, 62a, 62b, 63a, and 63b). One or more drain holes 646h may be formed between adjacent domes 641, 642, 643, and 644.

Domes 641, 642, 643, and 644 may include two or more domes having different depths of concave portions on their inner surfaces. More specifically, the domes 641, 642, 643, and 644 have large domes 641 and 642, each of which has a concave portion of a first depth, and concave portions of a second depth, each of which is smaller than the first depth. It may include small domes 643 and 644 having. The heights of the spacers 625a and 625d corresponding to the large domes 641 and 642 may be greater than the heights of the spacers 625b and 625c corresponding to the small domes 643 and 644.

Domes 641, 642, 643, and 644 may include two or more domes of different sizes. Each of the domes 641, 642, 643, and 644 may have a circular shape, but the present disclosure is not necessarily limited thereto. Here, the "size" may be determined based on the shape of the recesses on the inner surfaces of the dome 641, 642, 643, and 644 when viewed from above. For example, the "size" is defined as the diameter of the recesses. Can be specified. However, the difference between the inner and outer diameters of the domes 641, 642, 643, and 644 is simply due to the thickness of the material, so the size is the outer diameter of each dome 641, 642, 643, and 644. Can be specified based on.

The size of the spacer 625 may vary depending on the size of the domes 641, 642, 643, and 644, respectively. That is, as shown in FIG. 13, when there are large domes 641 and 642 and small domes 643 and 644, the spacer 625 corresponding to the large domes 641 and 642 is larger than the spacer 625 corresponding to the small domes 643 and 644. You may.

The two small domes 643 and 644 may be arranged between the pair of large domes 641 and 642, and the drain holes 646h may be formed between the domes 641, 642, 643, and 644. The plurality of drain holes 646h are arranged in a direction intersecting the lifters 61a, 61b, 62a, 62b, 63a, 63b (or in a direction orthogonal to the lengths of the lifters 61a, 61b, 62a, 62b, 63a, and 63b). You may.

The water stored in the water storage tank 31 is introduced into the lifters 61a, 61b, 62a, 62b, 63a, and 63b through the opening. The lifter frame 620 has a structure having one or more water passage holes 624, and the water introduced into the lifters 61a, 61b, 62a, 62b, 63a, and 63b reaches the drain hole 646h via the water passage holes 624. Can be reached.

The washing water introduced into the lifters 61a, 61b, 62a, 62b, 63a, 63b rises due to the rotation of the washing tub 50 with the washing water contained in the lifters 61a, 61b, 62a, 62b, 63a, 63b. In this process, the washing water is discharged (or sprayed) from the drain hole 646h.

With reference to FIGS. 2, 3, 10, and 13-15, the frame cover 640 is one or more ring-shaped cleaning protrusions 603 and 604, or one or more protruding from the outer surface of the cover side wall 645. Cleaning ring may be included. The plurality of cleaning protrusions 603 and 604 may be arranged parallel to each other. In an exemplary embodiment, two cleaning protrusions 603 and 604 are provided, but the present disclosure is not necessarily limited to these. If the frame cover 640 is made of metal, the cleaning protrusions 603 and 604 may be formed by a press.

Each of the cleaning protrusions 603 and 604 has a shape corresponding to (or similar to) the contour of the cover side wall 645, and preferably the cleaning protrusions can project from the cover side wall 645 to a predetermined height. Since the contour of the cover side wall 645 decreases upward, the cleaning protrusion located on the upper side of the cleaning protrusions 603 and 604 is smaller than the other cleaning protrusions.

The frictional force applied between the laundry and the cleaning protrusions 603, 604 creates the effect of rubbing the laundry, thereby improving the washing force. Further, since the cleaning protrusions 603 and 604 assist the operation of lifting the laundry, even when the heights of the lifters 61a, 61b, 62a, 62b, 63a, and 63b are made lower than those of the prior art, they are as in the prior art. Any level of physical force (eg, lifting or tapping force on the laundry) can be applied to the laundry.

The frame cover 640 may be coupled to the lifter frame 620. With reference to FIGS. 2 and 3, one or more connecting tabs 648 may be formed at the lower end of the frame cover 640. As shown in FIG. 14, the connecting tab 648 may be formed on the left side portion 645L or the right side portion 645R at the lower end when the frame cover 640 is viewed from the front. The left side portion 645L and the right side portion 645R may be straight portions extending in the front-rear direction.

Referring to FIGS. 8 and 9, the lifter frame 620 may be formed with a tab coupling port 621h through which the coupling tab 648 passes from above. The tab coupling port 621h may be formed at a position corresponding to the coupling tab 648, respectively. The connecting tab 648 passes through the tab connecting port 621h, and the passing portion of the connecting tab 648 is bent and hooked by the edge of the tab connecting port 621h (or the bottom surface of the frame base 621) so that the lifter frame 620 and the frame cover 640 are attached to each other. Can be combined.

On the other hand, the frame base 621 of the lifter frame 620 may be formed with a seating groove 621r corresponding to the lower end of the frame cover 640. The lower end of the frame cover 640 can be inserted and mounted in the seating groove 621r. In this case, the tab coupling port 621h may be formed in the seating groove 621r.

Hereinafter, the structure in which the lifter frame 620 and the drum 51 are connected to each other will be described.

With reference to FIGS. 8, 9, 11, and 12, one or more insertion protrusions 627 may be formed on each of the front lifters 61a, 62a, and 63a and / or the rear lifters 61b, 62b, and 63b, respectively. .. Further, referring to FIGS. 5 to 7, the drum 51 may have a mounting slot 511a1 of the first group G1 and a mounting slot 511a2 of the second group G2. Each of the groups G1 and G2 may include one or more mounting slots 511a1 (1) to 511a1 (4). Here, a "group" is a set of mounting slots and may include one or more mounting slots.

The mounting slots 511a1 of the first group G1 and the mounting slots 511a2 of the second group G2 are several mounting slots 511a1 (1) to 511a1 (4) and 511a2 (1) corresponding to the number of one or more insertion protrusions 627. 511a2 (4) may be included. That is, when the front lifters 61a, 62a, 63a are mounted using the mounting slots of the first group G1 and the second group G2, the number of mounting slots 511a1 of the first group G1 and the mounting slots 511a2 of the second group G2 are increased. , The number of insertion protrusions 627 provided on the front lifters 61a, 62a, and 63a may be accommodated.

Similarly, in some embodiments, when the rear lifters 61b, 62b, and 63b are mounted using the mounting slots of the first group G1 and the second group G2, the number of mounting slots 511a1 of the first group G1 and the second group. The number of mounting slots 511a2 of the G2 may correspond to the number of insertion protrusions 627 provided in the rear lifters 61b, 62b, and 63b, respectively.

One or more insertion protrusions 627 formed on each of the front lifters 61a, 62a, 63a or the rear lifters 61b, 62b, 63b are selectively fixed in the mounting slots 511a2 of the first group G1 or the second group G2. You may. At the installation position of the lifter, one or more insertion protrusions 627 formed in each of the lifters 61a, 62a, 63a, 61b, 62b, and 63b constitute either one of the first group G1 or the second group G2. It can be determined by whether it is inserted into the mounting slot to be used.

In the following, an example of installing the front lifters 61a, 62a, 63a using the mounting slots 511a constituting the first group G1 and the second group G2 will be described, but in order to mount the rear lifters 61b, 62b, and 63b. Similarly, mounting slots may be formed.

The mounting slot 511a2 of the second group G2 is formed in a region shifted rearward within a range in which the mounting slot 511a2 of the second group G2 overlaps with the mounting slot 511a1 of the first group G1. For reference, in FIG. 6, the first region M1 indicates a region in which the mounting slot 511a1 of the first group G1 is formed, and the second region M2 indicates a region in which the mounting slot 511a2 of the second group G2 is formed. .. Hereinafter, as shown in FIG. 6, the mounting slot 511a2 of the second group G2 is arranged behind the mounting slot 511a1 of the first group G1.

Referring to FIGS. 5 to 7, the mounting slot 511a2 of the second group G2 is separated from the mounting slot 511a1 of the first group G1 by a predetermined distance D rearward. Therefore, when the insertion protrusion 627 is attached to the mounting slot 511a1 of the first group G1, the front lifters 61a and 62a are compared with the case where the insertion protrusion 627 is attached to the mounting slot 511a2 of the second group G2. , 63a is located further forward by a distance D. As shown in FIG. 5, the metal plate of the large-capacity drum 51 extends forward by a distance E as compared with the case where the drum is a small-capacity drum. In the case of a large-capacity drum (FIG. 5A), the front lifters 61a, 62a, 63a have the front lifters 61a, 62a, 63a relatively forward as compared with the case where the drum is a small-capacity drum (FIG. 5B). It is mounted using the mounting slot 511a1 of the first group G1 so that it can be installed. Therefore, the laundry located in the region corresponding to the distance E can easily come into contact with the front lifters 61a, 62a, 63a during the rotation of the drum 51.

The mounting slots 511a of each group G1 and G2 may be arranged side by side in the front-rear direction. In particular, the respective mounting slots 511a of the groups G1 and G2 are arranged in two rows. Further, when looking at the entire configuration without distinguishing the groups, the mounting slots 511a may be arranged along a common reference line extending in the front-rear direction. Preferably, in the embodiment, the mounting slots are arranged on two straight lines parallel to each other.

More specifically, the mounting slots 511a1 of the first group G1 have two or more first mounting slots 511a1 (1) and 511a1 (2) arranged at a first interval T in the first row P1 extending in the front-rear direction. Can include. Further, the mounting slots 511a1 of the first group G1 have two or more first mounting slots 511a1 (3) and 511a1 (4) arranged at the first interval T in the second row P2 parallel to the first row P1. Further may be included.

The mounting slots 511a2 in the second group G2 are two or more second mounting slots arranged rearward by a second spacing D smaller than the first spacing T from the mounting slots 511a1 of the first group G1 in the first row P1. It may contain 511a2 (1) and 511a2 (2).

Further, the mounting slots 511a2 of the second group G2 are two or more second mounting slots 511a2 (3) arranged in the second row P2 at positions shifted rearward by the interval T from the mounting slots 511a1 of the first group G1. And 511a2 (4) may be further included.

Hereinafter, the mounting slots 511a1, 511a2 that can be used to install the front lifters 61a, 62a, 63a are defined as belonging to the front lifter mounting group and can be used to install the rear lifters 61b, 62b, and 63b. Slot 511b (see FIG. 6A) is defined as belonging to the rear lifter installation group.

The plurality of front lifters 61a, 62a, 63a, or the plurality of rear lifters 61b, 62b, 63b may be arranged in the circumferential direction of the drum 51, whereby the plurality of front lifter installation groups are arranged in the circumferential direction. Similarly, a plurality of rear lifter installation groups may be arranged in the circumferential direction.

Hereinafter, the mounting slot belonging to the front lifter mounting group will be referred to as a front mounting slot 511a, and the mounting slot belonging to the rear lifter mounting group will be referred to as a rear mounting slot 511b.

With reference to FIGS. 8-12, the insertion projection 627 may project from the frame base 621. The insertion protrusion 627 may include a vertical portion 627a (see FIG. 11) protruding downward from the bottom surface of the frame base 621 and a catching portion 627b bent horizontally from the vertical portion 627a. The catching portion 627b may project toward the inside of the ring-shaped frame base 621 when viewed from above.

As shown in FIG. 11, when the lifter frame 620 is viewed from the front, insertion protrusions 627 may be formed on the left and right sides of the frame base 621, respectively. Two or more insertion protrusions 627 may be formed along one side (or in the anteroposterior direction) of the frame base 621.

Specifically, the insertion protrusion 627 (L) formed on the left side of the frame base 621 may include a catching portion 627b bent to the right. On the contrary, the insertion protrusion 627 (R) formed on the right side of the frame base 621 may include the catching portion 627b bent to the left.

Referring to FIG. 6, each mounting slot 511a and 511b may be formed so as to have a length L1 in the substantially front-rear direction of the drum 51. Each mounting slot 511a, 511b may include an insertion portion S1 having a predetermined width W1 and a coupling portion S2 extending rearwardly or forwardly from the insertion portion S1 and having a width (W2 <W1) smaller than that of the insertion portion S1. Good. In an exemplary embodiment, the coupling portion S2 extends posteriorly from the rear end of the insertion portion S1, but the present disclosure is not necessarily limited to this. On the contrary, the connecting portion S2 may extend forward from the front end of the inserting portion S1.

Further, as shown in FIG. 20, which will be described later, in an exemplary embodiment, the coupling portion S2 of the front mounting slot 511a may extend forward from the front end of the insertion portion S1, and the coupling portion S2 of the rear mounting slot 511b may extend forward. May extend rearward from the rear end of the insertion portion S1.

On the other hand, referring to FIGS. 5 to 7, when the lifter frame 620 is mounted on the drum 51, the insertion protrusion 627 of the lifter frame 620 passes through the insertion portion S1 and the lifter frame 620 is pushed rearward, whereby the vertical portion is formed. The 627a moves forward along the joint S2, thus the capture 627b is located below the joint S2. In this case, the bottom surface of the frame base 621 is in close contact with the inner peripheral surface of the drum 51, and the width W3 of the catching portion 627b (see FIG. 11) is larger than the width W2 of the connecting portion S2. It is not possible to pass through the portion S2 from the lower side to the upper side.

Referring to FIGS. 8 to 11, the frame side wall 622 includes a side wall left portion 622L whose lower end is connected to the left side 621a of the frame base 621 and a side wall right portion 622R whose lower end is connected to the right side 621b of the frame base 621. Can include. At least one of the left side wall 622L or the right side wall 622R may define an acute angle with respect to the frame base 621. In particular, at least one of the left side wall 622L or the right side wall 622R may be symmetrical to each other when viewed from the front.

A lateral through hole 624a may be formed in the frame side wall 622 at a position corresponding to the insertion protrusion 627 when the lifter frame 620 is viewed vertically downward from above. The lateral through hole 624a may be formed in at least one of the left side wall portion 622L and the side wall right portion 622R.

The lifter frame 620 may be formed by injection molding. In this case, the mold may include an upper mold that forms the upper surface of the lifter frame 620 and a lower mold that forms the lower surface of the lifter frame 620.

The upper surface of the insertion protrusion 627 may be formed by an upper mold. Since the insertion protrusion 627 is located below the frame side wall 622, the mold portion of the upper mold forming the upper surface of the insertion protrusion 627 (particularly the upper surface of the catching portion 627b) is moved upward during the process of opening the mold. In the area on the frame side wall 622 that overlaps the insertion protrusion 627 in the direction in which the upper mold opens (or vertically upward from the frame base 621) so that it can be (or the upper mold can be pulled out without undercut). During the process of opening the mold, it is necessary to form an opening through which a part of the upper mold defining the upper surface of the insertion protrusion 627 can pass, and the lateral through hole 624a is the opening. For reference, the PL in FIG. 11 shows a dividing line formed by the upper mold and the lower mold.

In this case, the lateral through hole 624a is sometimes referred to as a "mold discharge port" because it has a configuration necessary for discharging a part of the mold during the molding process using the mold.

As shown in FIG. 8, when the lifter frame 620 is viewed vertically downward from above (hereinafter referred to as a “plan view of the lifter frame”), the catching portion 627b of the insertion protrusion 627 is placed in the lateral through hole 624a (or laterally). (Overlapping with the through hole 624a). In particular, the entire capture portion 627b is arranged in the lateral through hole 624a. Further, in the plan view of the lifter frame, the outer circumference of the capturing portion 627b is separated from the edge of the lateral through hole 624a except for the portion 627a connected to the vertical portion 627a.

Further, the seating groove 621r may extend in a closed curve along the periphery of the frame base 621, and the horizontal projection surface of the catching portion 627b of the insertion protrusion 627 may be located within the closing curve of the seating groove 621r. That is, the catching portion 627b of the insertion protrusion 627 may be arranged inside surrounded by the seating groove 621r.

Therefore, the load on the portion of the frame base 621 having the closed curve formed by the seating groove 621r is reduced to some extent, thereby preventing the portion from being structurally weakened.

Further, as shown in FIG. 11, the portion where the lower end of the frame side wall 622 is connected to the frame base 621 may have a relatively higher rigidity than the other portions. Therefore, a configuration in which the vertical portion 627a of the insertion protrusion 627 and the lower end of the frame side wall 622 correspond to each other in the longitudinal direction may be advantageous in terms of structural rigidity.

With reference to FIGS. 9 and 10, capture projections 626 may be formed on at least one of the front lifters 61a, 62a, and 63a or the rear lifters 61b, 62b, and 63b. The catching protrusion 626 may protrude downward from the concave inner surface 620b of the lifter frame 620.

With reference to FIG. 6, the openings 512a and 512b into which the capture projections 626 are inserted may be formed in the drum 51. The pair of openings 512a1, 512a2 for installing the front lifters 61a, 62a, 63a may be separated by a distance D in the front-rear direction.

The capture protrusion 626 is either a pair of openings 512a1 or 512a2, depending on whether the insertion protrusion 627 is inserted into the mounting slot 511a1 of the first group G1 or the mounting slot 511a2 of the second group G2. Is selectively inserted in.

The edges of the openings 512a and 512b may be formed with capture tabs 514a and 514b that come into contact with (or capture) the lower end of the capture projection 626, respectively. The capture tabs 514a and 514b may contact the sides of the capture protrusion 626 within the openings 512a and 512b, thereby limiting the lateral movement of the capture protrusion 626.

On the other hand, the positions of the capture tabs 514a and 514b may be determined based on the relative positions of the mounting slots 511a and 511b of the coupling portion S2 with respect to the insertion portion S1. That is, as shown in FIG. 6, when the coupling portion S2 is located behind the insertion portion S1, the capture tabs 514a and 514b are arranged in the first recess 626a on the front side of the capture protrusion 626. The capture tabs 514a and 514b are used to limit the movement of the capture projection 626 when the capture projection 626 attempts to move forward (ie, when the insertion projection 627 attempts to move from the coupling portion S2 to the insertion portion S1). , Can extend rearward from the front end of the opening 512.

On the contrary, when the coupling portion S2 is located forward from the insertion portion S1 as in the mounting slot 511a shown in FIG. 20, the capture tabs 514a and 514b are located in the second recess 626b on the rear side of the capture protrusion 626. The capture tabs 514a and 514b are used to limit the movement of the capture projection 626 when the capture projection 626 attempts to move rearward (ie, when the insertion projection 627 attempts to move from the coupling portion S2 to the insertion portion S1). , Can extend forward from the rear end of the opening 512.

The capture tabs 514a and 514b may be bent at a predetermined angle with respect to the outside of the drum 51 based on the portion connected to the edges of the openings 512a and 512b.

Even when the lower end of the capture protrusion 626 is not inserted into the openings 512a and 512b, the side surface of the capture protrusion 626 may come into contact with the capture tabs 514a and 514b. When the lifter frame 620 tries to move so that the vertical portion 627a moves from the joint portion S2 to the insertion portion S1 (that is, when the lifter frame 620 tries to move in the direction opposite to the direction in which the lifter frame 620 is installed), the capture tab 514a And 514b interfere with the lower end of the capture protrusion 626, thus limiting movement.

Referring to FIG. 9, a first recess 626a may be formed at the lower end of the capture protrusion 626 on the side facing the capture tabs 514a and 514b. With the lifter frame 620 fully installed, the capture tabs 514a and 514b may be placed in the first recess 626a.

A second recess 626b may be further formed at the lower end of the capture protrusion 626 on the side opposite to the first recess 626a. When the lifter frame 620 is installed with the front and rear surfaces of the lifter frame 620 modified, the capture tabs 514a and 514b may be arranged in the second recess 626b.

With reference to FIG. 9, fastening bosses 628 may be formed on at least one of the front lifters 61a, 62a, and 63a or the rear lifters 61b, 62b, and 63b. The fastening boss 628 may project downward from the inner surface 620b of the lifter frame 620. The fastening boss 628 may extend from the frame top plate 623. The two or more fastening bosses 628 may be provided so as to be separated from each other in the front-rear direction.

With reference to FIGS. 5 and 6, fastening holes 513a and 513b may be formed in the drum 51. The fastening holes 513a and 513b are the first fastening hole 513a1 formed at a position corresponding to the fastening boss 628 when the insertion protrusion 627 of the lifter frame 620 is mounted in the mounting slot 511a1 of the first group G1 and the lifter frame 620. 627 may include a second fastening hole 513a2 formed at a position corresponding to the fastening boss 628 when mounted in the mounting slot 511a2 of the second group G2. A pair of first fastening holes 513a1 (1) and 513a1 (2) are provided corresponding to the pair of fastening bosses 628, and a second fastening hole 513a2 including a pair of second fastening holes 513a2 (1) and 513a2 (2). Can be provided.

Referring to FIG. 7, the fastening boss 628 has a predetermined fastening based on whether the insertion projection 627 is inserted into the mounting slot 511a1 of the first group G1 or the mounting slot 511a2 of the second group G2. It may be selectively fastened to the first fastening hole 513a1 or the second fastening hole 513a2 by a member (hereinafter, for example, a screw 98).

The screw 98 is fastened from the outside of the drum 51 through the fastening hole 513a so that the lifter frame 620 is completely installed with the insertion protrusion 627 inserted into the mounting slot 511a and the lifter frame 620 temporarily assembled. It is fastened to the boss 628.

On the other hand, as described above, as shown in FIG. 7A or FIG. 7B, the installation position of the lifter frame 620 changes depending on whether the insertion protrusion 627 is inserted into the mounting slot 511a1 or the mounting slot 511a2. In any case, when the lifter is completely installed, the mounting slots 511a1, 511a2, the openings 512a1, 512a2, and the fastening holes 513a1, 513a2 are hidden by the frame cover 640. That is, the mounting slots 511a1, 511a2, the openings 512a1, 512a2, and the fastening holes 513a1, 513a2 are located inside the frame cover 640 and are not exposed inside the drum 51.

In other words, at least one insertion protrusion 627 provided on each of the lifters 61a, 62a, 63a, 61b, 62b, 63b is a group of any one of the mounting slots 511a of the first group G1 and the second group G2 ( For example, while fixed in the mounting slot (eg, 511a1) of the G1), the mounting slot (eg, 511a2) of another group (eg, G2) may be hidden inside the drum 51 by the lifter.

More specifically, at least one insertion protrusion 627 provided on each of the front lifters 61a, 62a, 63a is inserted into the mounting slot of any group (eg, G1) of the first group G1 and the second group G2. In this state, the front ends of the front lifters 61a, 62a, 63a are the mounting slots 511a1 (1) to 511a1 (4) and 511a2 (1) to 511a2 (4) belonging to the first group G1 and the second group G2. ) Can be placed in front of.

Further, the rear ends of the front lifters 61a, 62a, 63a are of mounting slots 511a1 (1) to 511a1 (4) and 511a2 (1) to 511a2 (4) belonging to the first group G1 and the second group G2. It can be placed rearward from either.

The mounting slots 511a1 (1) to 511a1 (4) and 511a2 (1) to 511a2 (4) used to mount the front lifters 61a, 62a, 63a are all front and rear ends of the front lifters 61a, 62a, and 63a. Being located between the ends, the mounting slots can be hidden by being covered by the front lifters 61a, 62a, and 63a.

Manufacturers of laundry processing equipment may produce various types of products with drums of different capacities. In this case, a metal plate having mounting slots 511a, 511b, openings 512a, 512b, fastening holes 513a, 513b, etc. is cut out based on a predetermined standard, and the raw material 51'or 51'' cut out in this way (FIG. 5) is rolled up and the ends of the raw materials are joined together to make the drum 51. In this case, the metal plate is cut to a predetermined length based on the standard of the drum. In order to manufacture two drums having different lengths, it is necessary to adjust the distance between the front lifters 61a, 62a, 63a and the rear lifters 61b, 62b, 63b so as to be different according to the length of the drums. ..

For example, as shown in FIG. 5, when the length of the drum 51'is long (see FIG. 5A), the distance between the front lifters 61a, 62a, 63a and the rear lifters 61b, 62b, 63b is large. Even in the case of the drum 51, the front lifter 61a when the length of the drum 51 "is short (see FIG. 5B) so that the laundry can be uniformly lifted by the front and rear lifters 61b, 62b, 63b. , 62a, 63a and the rear lifters 61b, 62b, 63b need to be larger than the distance.

Therefore, the drum 51 is additionally attached to adjust the installation position of at least one of the front lifters 61a, 62a, 63a or the rear lifters 61b, 62b, 63b in the front-rear direction when the length of the drum is changed. Slot 511a is further formed.

In this exemplary embodiment, additional mounting slots 511a are provided to adjust the installation positions of the front lifters 61a, 62a, 63a, but the present disclosure is not necessarily limited to this. Additional mounting slots 511b may be provided to adjust the installation positions of the rear lifters 61b, 62b, and 63b, depending on the exemplary embodiment.

The additional mounting slot 511a may be formed in the lifter frame 620 so as to numerically correspond to the mounting slot 511a (hereinafter, referred to as “mounting slot”) into which the insertion protrusion 627 is inserted, and the additional mounting slot 511a may be formed in the lifter frame 620. May be formed at a position separated from each installation slot by a predetermined distance D forward or backward. The installation position of the lifter frame 620 can be changed by the distance D by separating the insertion protrusion 627 from the mounting slot (for example, 511a1) and inserting the insertion protrusion 627 into the additional mounting slot (for example, 511a2). it can.

In the exemplary embodiment, an additional opening 512a is provided to adjust the installation positions of the front lifters 61a, 62a, 63a, but the present disclosure is not necessarily limited to this. Depending on the embodiment, an additional opening 512b may be provided to adjust the installation positions of the rear lifters 61b, 62b, 63b.

On the other hand, in an exemplary embodiment, additional fastening holes 513a are provided to adjust the installation positions of the front lifters 61a, 62a, 63a, but the present disclosure is not limited thereto. Depending on the embodiment, additional fastening holes 513b may be provided to adjust the installation positions of the rear lifters 61b, 62b, 63b.

FIG. 20 shows another exemplary embodiment of the present disclosure. In order to install the lifter frame 620 through the front mounting slot 511a, it is necessary to push the lifter frame 620 forward after inserting the insertion protrusion 627 into the insertion portion S1. In order to install the lifter frame 620 through the rear mounting slot 511b, it is necessary to push the lifter frame 620 rearward after inserting the insertion protrusion 627 into the insertion portion S1.

On the contrary, in order to separate the lifter frame 620 from the drum 51, the lifter frame 620 is moved forward or in order to move the catching portion 627b of the insertion protrusion 627 from the coupling portion S2 and align the catching portion 627b with the inserting portion S1. Pushed rearward to lift the lifter frame 620, as a result, the capture section 627b can pass through the insertion section S1 and the lifter frame 620 can be separated from the drum 51.

FIG. 16 is a diagram showing a pair of front and rear lifters shown in FIG. FIG. 17 is a front view of the lifter shown in FIG. FIG. 18 is a view (a) showing a state in which the drum shown in FIG. 1 is unfolded, and a unfolded view (b) of a drum in which a lifter is arranged according to another exemplary embodiment of the present disclosure. FIG. 19 shows a diagram (a) showing a change in the height of the first fabric caused by the rear lifter according to the rotation angle of the drum, and a change in the height of the second fabric caused by the front lifter paired with the rear lifter. It is a figure (b) shown. Hereinafter, description will be made with reference to FIGS. 16 to 19.

The front lifters 61a, 62a, and 63a are arranged on the inner peripheral surface of the drum 51 and extend in the front-rear direction. The plurality of front lifters 61a, 62a, 63a are arranged at equal angles with respect to the rotation axis O.

The rear lifters 61b, 62b, 63b are arranged on the inner peripheral surface of the drum 51, and are located behind the front lifters 61a, 62a, 63a. The rear lifters 61b, 62b, 63b are arranged at equal angles with respect to the rotation axis O, similarly to the front lifters 61a, 62a, 63a.

The rear lifters 61b, 62b, 63b are arranged so as to form a predetermined phase angle with the front lifters 61a, 62a, 63a with respect to the rotation axis O. Here, the "phase angle" is created by defining the time point at which the lifters 61a, 62a, 63a, 61b, 62b, 63c reach a point on the circumference as the rotation angle of the drum 51. In an exemplary embodiment, when the drum 51 rotates clockwise CW, the rear lifters 61b, 62b, 63b are at the same height before the front lifters 61a, 62a, 63a by the amount corresponding to the phase angle ΔΘ. To reach.

As shown in FIGS. 16 and 17, each lifter 61a, 62a, 63a, 61b, 62b, 63b has a length C1 extending in the front-rear direction and a width defined in the left-right direction (or a direction orthogonal to the longitudinal direction). Assuming that it has C2, the circumferential distance corresponding to the phase angle (C3 = ΔΘr, see FIG. 19) is greater than 0 and less than twice the circumferential width C2 of the front lifters 61a, 62a, 63a. Is.

With reference to FIG. 18, any pair of front / rear lifters (eg, 61a and 61b) on the inner peripheral surface of the drum 51 and another pair of front / rear lifters (eg, 62a and 62b). A non-lifting region SE in which the front lifter or the rear lifter is absent is formed between the two. The non-lifter region SE may extend from the front end to the rear end of the drum 51.

Specifically, the non-lifter region SE extends from the front end of the drum 51 through between two adjacent lifter pairs to the rear end of the drum 51. Specifically, the non-lifter region SE is between the two adjacent front lifters (eg, 61a and 62a) of the plurality of front lifters 61a, 62a, and 63a, and the two adjacent front lifters. It extends straight from the front end of the drum 51 to the rear end of the drum, passing between each of the 61a and 62a and the two rear lifters 61b and 62b forming the phase angle ΔΘ, respectively.

Since the non-lifting region SE extends straight from the front end to the rear end of the drum 51, the laundry can be uniformly distributed to the front region and the rear region of the drum 51 in the non-lifting region SE.

Typically, the washing machine detects the decentering rate of the drum 51 before performing the dehydration process, and if the detected decentering rate is within the reference value, the rotation speed of the drum 51 is the predetermined dehydration rate (or dehydration). The drum is accelerated to reach RPM). Otherwise, fabric distribution is performed to reposition the fabric within the drum 51. If the detected eccentricity does not reach the reference value, the fabric distribution is repeated. When the number of times the cloth distribution is repeated reaches a predetermined number of times, it is determined that the cloth distribution has failed, and dehydration is stopped.

In the washing machine according to this exemplary embodiment, the first fabric located on the rear side of the drum 51 (that is, the fabric lifted by the rear lifters 61b, 62b, 63b) and the second fabric located on the front side of the drum 51 (that is, the fabric lifted by the rear lifters 61b, 62b, 63b). That is, the fabric lifted by the front lifter) flows with a time difference (or phase difference) due to the phase angle ΔΘ formed by the front lifters 61a, 62a, and 63a and the rear lifters 61b, 62b, and 63b. , Fabric distribution can be done more smoothly.

Specifically, referring to FIG. 19, when the drum 51 is rotated clockwise CW with the rear lifters 61b, 62b, and 63b located at the lowest point (Θ = 0) of the drum 51, the first The fabric begins to be lifted by the rear lifters 61b, 62b, and 63b first, followed by the time corresponding to the phase angle ΔΘ, after which the second fabric begins to be lifted by the front lifters 61a, 62a, and 63a.

Assuming that the position P where the cloth rolls (Θ <π / 2) and the cloth lifted by the lifters 61a, 62a, 63a, 61b, 62b, and 63b falls is the position Pd, the rear lifters 61b, 62b, and 63b. The first fabric lifted by the first fabric reaches the position (or height) Pd and falls first, and then the second fabric lifted by the front lifters 61a, 62a, and 63a reaches the position Pd and falls. To do.

The first and second fabrics move with a time lag without forming lumps and can therefore be evenly distributed. As a result, the number of times the fabric distribution is repeated can be reduced, the case of not entering the dehydration stage can be reduced, and the entire washing time including the dehydration time can be shortened.

Also, as the fabric rolls and falls, the fabric flows with a phase difference, causing more frequent friction and collisions between the fabrics caused by relative movement, and the cleaning operation is more effective in contaminating the fabric. Can be removed (ie, improved detergency).

On the other hand, FIG. 20 is a diagram showing a modified example in which the lifter is arranged, in which FIG. 20A shows a small-capacity drum and FIG. 20B shows a large-capacity drum. Referring to FIG. 20, a set of front lifters 61a, 62a, 63a and rear lifters 61b, 62b, 63b may be arranged in a row in the front-rear direction. That is, the pair of front lifters 61a, 62a, 63a and the rear lifters 61b, 62b, 63b may be arranged on the same line without being spaced apart from each other in the circumferential direction.

FIG. 21 is a diagram showing another exemplary embodiment of the lifter. The exemplary embodiment shown in FIG. 21 is slightly different in shape from that of the exemplary embodiment described above, but has a lifter frame 620'and a frame cover similar in detail to the exemplary embodiment described above. A lifter 64 including 640'and is provided. Therefore, the same components as those according to the above-described exemplary embodiments are designated by the same reference numerals, and specific description thereof will be omitted.

Although the present invention has been described in the context of its embodiments, it should be understood that various modifications thereof will be apparent to those skilled in the art upon reading this specification. Therefore, it should be understood that the invention disclosed herein is intended to include modifications that fall within the appended claims.

13 Casing 16 Damper 17 Drain hose 19 Drain pipe 21 Door 22 Gasket 24 Pump 25 Motor 25a Drive shaft 26 Spider 31 Water tank 33 Water supply valve 34 Water supply pipe 35 Dispenser 37 Water supply hose 50 Washing tank 51 Drum 51', 51'' Raw material 51a Embossed portion 51h Through hole 52 Front cover 53 Rear cover 61a, 62a, 63a Front lifter 61b, 62b, 63b Rear lifter 98 Screw 511a Front mounting slot 511b Rear mounting slot 511a1 First group G1 mounting slot 511a2 Second group G2 mounting slots 511a1 (1), 511a1 (2), 511a1 (3), 511a1 (4) Mounting slots 511a2 (1), 511a2 (2), 511a2 (3), 511a2 (4) Mounting slots 512a, 512b openings Part 513a, 513b Fastening holes 513a1, 513a1 (1), 513a1 (2) First fastening holes 513a2, 513a2 (1), 513a2 (2) Second fastening holes 514a, 514b Capture tabs 603, 604 Cleaning protrusions 620, 620' Lifter frame 620a Outer surface 620b Inner surface 621 Frame base 621a Left side 621b Right side 621h Tab connection port 621r Seating groove 622 Frame side wall 622L Side wall left part 622R Side wall right part 623 Frame upper plate 624, 624a Water flow hole 624a Horizontal through hole (mold discharge port) )
625 Spacer 625a Vertical rib (spacer)
625b Horizontal rib (spacer)
625c, 625d Spacer 626 Capture protrusion 626a First recess 626b Second recess 627, 627 (L), 627 (R) Insertion protrusion 627a Vertical part 627b Capture part 628 Fastening boss 640, 640'Frame cover 640a Outer surface 641, 642, 643 , 644 Dome 645 Cover side wall 645L Left side 645R Right side 646 Cover top plate 646h Drain hole 648 Connection tab O Rotation axis g1, g2 Separation space (gap)
G1 1st group G2 2nd group M1 1st area M2 2nd area D, D1, D2, D3, D4, D5, E Distance P1 1st row P2 2nd row T 1st interval D 2nd interval L1 Length W1 , W2, W3, C2 Width S1 Insertion part S2 Coupling part ΔΘ Phase angle FE Front end SE Non-lifter region P position Pd position

Claims (16)

It ’s a washing machine,
A drum that has a mounting slot and is configured to rotate around a rotation axis that extends in the front-back direction.
A lifter arranged on the inner peripheral surface of the drum and configured to rotate about the rotation axis when the drum rotates is provided.
The lifter is
A lifter frame attached to the inner peripheral surface of the drum and
A frame cover that is connected to the lifter frame and projects inward in the radial direction from the inner peripheral surface of the drum is provided.
The lifter frame is
A frame base that is coupled to the inner peripheral surface of the drum and is formed in the form of a closed curve formed by a single line.
A frame top plate arranged at a distance from the frame base in a direction toward the inside of the drum and whose horizontal projection surface is arranged in the closed curve of the frame base.
A frame side wall configured to connect the frame upper plate and the frame base, and having a lateral through hole formed by penetrating a part of the frame side wall.
An insertion projection configured to be inserted into the mounting slot and comprising a vertical portion extending downward from the bottom surface of the frame base and a catching portion bent inward of the closed curve at the lower end of the vertical portion. , With
The horizontal projection surface of the catching portion is a washing processing device located on the horizontal projection surface of the lateral through hole. The side wall of the frame
The left side of the side wall configured to connect the left side of the frame base and the top plate of the frame,
The right side of the frame base and the right side wall portion configured to connect the top plate of the frame are provided.
The washing treatment apparatus according to claim 1, wherein the lateral through hole is formed in at least one of the left side wall portion and the right side wall portion. The washing treatment apparatus according to claim 2, wherein at least one of the left side wall portion and the right side wall portion is connected to the frame base while defining an acute angle with respect to the frame base. The washing treatment apparatus according to claim 3, wherein the left side wall portion and the right side wall portion are symmetrical with each other with respect to the longitudinal direction along the longitudinal direction of the frame base. Among the horizontal projection plane of the capturing捉portion, the portion excluding the connection portion in the vertical portion is spaced from the edge of the horizontal projection plane of the transverse through hole, the laundry treatment apparatus according to claim 1 .. The lifter frame further comprises a water passage hole formed in the side wall of the frame so that the inside and the outside of the lifter frame communicate with each other.
The washing treatment apparatus according to claim 1, wherein the lateral through hole is relatively smaller than the water passage hole. The washing processing apparatus according to claim 1, wherein the frame cover is made of metal. The washing processing apparatus according to claim 7, wherein the frame base has a seating groove into which the lower end of the frame cover is inserted when the frame base is coupled to the frame cover. The washing processing apparatus according to claim 8, wherein the seating groove extends in a closed curve along the periphery of the frame base, and the horizontal projection surface of the capturing portion is located in the closed curve of the seating groove. The washing processing apparatus according to claim 9, wherein a connecting tab protrudes from the lower end of the frame cover, and a tab connecting port into which the connecting tab is inserted is formed in the seating groove when the frame cover is connected. The mounting slot
An insertion portion S1 having a width W1 through which the cross section of the capture portion passes, and an insertion portion S1.
The washing processing apparatus according to claim 1, further comprising a joint portion S2 extending forward or backward from the insertion portion and having a width W2 smaller than the width of the insertion portion. The lifter frame further comprises a fastening boss that projects from the inner surface of the lifter frame toward the inner peripheral surface of the drum.
The washing processing apparatus according to claim 1, wherein a fastening hole is formed in the drum, and the fastening boss and the fastening hole are fastened to each other by a fastening member. The lifter is
A plurality of front lifters arranged in the circumferential direction of the drum, and
The washing processing apparatus according to claim 1, further comprising a plurality of rear lifters arranged in the circumferential direction of the drum behind each of the front lifters. A connecting tab protrudes from the lower end of the frame cover,
The washing processing apparatus according to claim 1, wherein the lifter frame has a tab coupling port into which the connecting tab is inserted when the lifter frame is coupled to the frame cover. The frame base has left and right sides extending in the front-rear direction and formed parallel to each other.
The insertion protrusions are formed on the left side and the right side, respectively.
The catching portion of the insertion protrusion formed on the left side is bent to the right from the vertical portion.
The washing processing apparatus according to claim 1, wherein the capturing portion of the insertion protrusion formed on the right side is bent to the left from the vertical portion. It ’s a washing machine,
A drum that has a mounting slot, receives laundry, and is configured to rotate about a predetermined axis of rotation that extends in the front-back direction.
A lifter arranged on the drum and configured to lift the laundry in the drum as the drum rotates.
The lifter is
Adjacent to the inner surface of the drum, the synthetic resin of the lifter frame comprising a frame base having an opening, protrudes from the frame-based bottom, an insertion protrusion that is configured to be inserted into the mounting slot, frame A frame sidewall that extends upward from the sidewall and is configured to cover at least a portion of the opening.
A frame cover configured to cover the outside of the lifter frame is provided.
The insertion protrusion
A vertical portion extending downward from the bottom surface of the frame base,
A catching portion that is bent from the lower end of the vertical portion toward the inside of the opening.
A washing treatment apparatus in which a lateral through hole in which the catching portion is located is formed on the side wall of the lifter when viewed vertically downward from above.

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