KR20150081744A - Dish washer - Google Patents

Dish washer Download PDF

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Publication number
KR20150081744A
KR20150081744A KR1020140001522A KR20140001522A KR20150081744A KR 20150081744 A KR20150081744 A KR 20150081744A KR 1020140001522 A KR1020140001522 A KR 1020140001522A KR 20140001522 A KR20140001522 A KR 20140001522A KR 20150081744 A KR20150081744 A KR 20150081744A
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KR
South Korea
Prior art keywords
rail
ball
basket
tub
retainer
Prior art date
Application number
KR1020140001522A
Other languages
Korean (ko)
Inventor
정헌호
김성진
주재만
Original Assignee
삼성전자주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 삼성전자주식회사 filed Critical 삼성전자주식회사
Priority to KR1020140001522A priority Critical patent/KR20150081744A/en
Priority to US14/587,731 priority patent/US20150190034A1/en
Priority to EP15150114.5A priority patent/EP2891447A1/en
Priority to CN201510004634.9A priority patent/CN104757923A/en
Publication of KR20150081744A publication Critical patent/KR20150081744A/en

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    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00—Washing or rinsing machines for crockery or tableware
    • A47L15/42—Details
    • A47L15/50—Racks ; Baskets
    • A47L15/507—Arrangements for extracting racks, e.g. roller supports

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a dishwasher in which a basket drawing structure is improved. The dishwasher includes a tub, a basket accommodated in the tub, and a draw-out unit provided on both sides of the basket for guiding the basket to be drawn out toward the front of the tub. The draw- A plurality of first balls positioned between the first rail and the second rail, and a plurality of second balls positioned between the second rail and the third rail, Are arranged vertically with a plurality of second balls. It is possible to arrange the ball bearings in the vertical direction to provide a slim pull-out unit, thereby improving the space efficiency of the dishwasher.

Description

DISHWASHER {DISH WASHER}

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a dishwasher, and more particularly to a dishwasher improved in a basket drawing structure.

Generally, a dishwasher is a device for washing a tableware by spraying high-pressure washing water to a tableware, and usually undergoes preliminary washing, main washing, rinsing and drying. In the preliminary washing step, the washing water is sprayed without injecting the detergent to remove the residue of the dishware. In this washing process, the washing water is sprayed and the detergent is supplied by the detergent supply device. In the rinsing step, washing water is sprayed to wash away the detergent, and in the drying step, moisture remaining in the tableware is removed.

The tub in which the tableware is washed is provided with a basket for receiving the tableware. In order that the user can conveniently carry out the storage or retrieval of the tableware, the basket is installed to be able to be drawn out to the front surface of the tub. At this time, draw-out units are provided on both sides of the basket to guide the movement of the basket.

Generally, the drawing unit is composed of a plurality of rails, and the basket can roll and move along the rails using a roller or the like. However, there is a problem that moving using the rollers causes excessive friction and noise. In addition, there is a problem in durability such that the roller is pulled out from the rail because it is vulnerable to shaking.

Accordingly, a draw-out unit for guiding the basket by using ball bearings instead of the roller is disclosed. However, such a structure of the drawing unit has a problem that the supporting structure of the ball bearing is poor in durability.

In addition, since a plurality of rails are used, the volume occupied by the draw-out unit becomes large, and accordingly, a space for accommodating the dishes is unnecessarily reduced.

One aspect of the present invention provides a dishwasher including a draw-out unit using ball bearings designed with high durability.

Further, the present invention provides a dishwasher including a draw-out unit that occupies a small volume to increase the space efficiency.

The dishwasher according to an embodiment of the present invention includes a tub, a basket disposed inside the tub and containing a tableware, a drawer unit provided on both sides of the basket and guiding the basket to be drawn out toward the front of the tub Wherein the drawing unit includes a first rail, a second rail, a third rail, and a plurality of first balls positioned between the first and second rails, and a plurality of first balls positioned between the second and third rails, And the plurality of first balls are arranged vertically with the plurality of second balls, respectively.

The first rail, the second rail, and the third rail may have a vertically extending connection portion and a cross-section including an upper end portion and a lower end portion bent to one side.

The upper and lower ends of the first rail, the second rail, and the third rail may be bent in the same shape toward one side of the connecting portion.

The connecting portion of the first rail may be further extended in the vertical direction than the connecting portion of the second rail and the connecting portion of the second rail may be further extended in the vertical direction than the connecting portion of the third rail.

The first rail and the second rail are disposed such that the second rail upper end is located at a lower portion of the first rail upper end portion and the second rail lower end portion is located at an upper portion of a lower end portion of the first rail, The second rail and the third rail may be disposed such that the upper end of the third rail is located at a lower portion of the upper end of the rail and the lower end of the third rail is located at an upper portion of a lower end of the second rail.

Wherein the plurality of first balls include at least one first upper ball positioned between an upper end of the first rail and an upper end of the second rail and a second upper ball positioned between a lower end of the first rail and a lower end of the second rail At least one second upper ball positioned between an upper end of the second rail and an upper end of the third rail and at least one second upper ball located at a lower end of the second rail, And at least one second lower ball positioned between the lower end of the second rail and the lower end of the third rail.

A first retainer for receiving said at least one first upper ball and said at least one first lower ball, and a second retainer for receiving said at least one second upper ball and said at least one second lower ball can do.

The upper and lower ends of the second rails are disposed so as to face the same direction as the upper and lower ends of the first rails and the upper and lower ends of the third rails are disposed so as to face the upper and lower ends of the first rails .

A first retainer positioned between the first rail and the second rail, and a second retainer positioned between the second rail and the third rail.

The first retainer may include a plurality of first ball mounting portions on which the plurality of first balls are respectively mounted and the second retainer may include a plurality of second ball mounting portions on which the plurality of second balls are mounted .

Wherein the first retainer is movably provided along the first rail, the first rail includes a first fixing rib so that the first retainer does not deviate from the first rail, 2 rail, and the second rail may include a second fixing rib so that the second retainer does not deviate from the second rail.

The first rail may be attached to the inner surface of the tub, the third rail may engage the basket, and the second rail may be positioned between the first rail and the third rail.

The basket includes a coupling unit on both sides, and the coupling unit can engage with the third rail to movably support the basket.

The coupling unit may include a coupling protrusion protruding toward the third rail, and the third rail may include a coupling groove into which the coupling protrusion is fitted.

And a fixing member detachably coupled to the third rail so that the coupling protrusion fitted in the coupling groove can be fixed.

According to another aspect of the present invention, there is provided a dishwasher including a tub, a basket disposed to receive a tableware therein, a first rail fixed to an inner wall of the tub, a second rail movably installed along the first rail, A first rail disposed between the first rail and the second rail, a third rail disposed movably along the second rail and coupled to the basket, a first rail positioned between the first rail and the second rail, And a second ball bearing located between the second and third rails and movably disposed along the second rail.

Wherein the first ball bearing comprises at least one first ball and a first retainer in which the at least one first ball is received and wherein the second ball bearing comprises at least one second ball, And a second retainer to which the first retainer is accommodated.

The at least one first ball and the at least one second ball may be vertically arranged.

According to another aspect of the present invention, there is provided a dishwasher including a tub for washing dishes, a basket provided on the tub for storing dishes, a plurality of rails provided between the tub and the basket for guiding movement of the basket, Wherein the plurality of rails comprise a first rail attached to the tub, a second rail disposed on one side so as to contact the first rail, one side abutting on the second rail, And the first rail extends up and down from the second rail, and the second rail extends upward and downward from the third rail.

The plurality of rails may have a vertically extending connection portion and a cross-section including an upper end portion and a lower end portion bent in the same direction in the connection portion.

The first rail and the second rail may be disposed such that an upper end portion and a lower end portion face the basket, and the third rail may be disposed in a direction opposite to the first rail and the second rail.

The drawing unit may include a first ball bearing positioned between the first rail and the second rail, and a second ball bearing positioned between the second rail and the third rail.

Wherein the first ball bearing comprises a first upper ball positioned between the upper ends of the first and second rails and a first lower ball positioned between the lower ends of the first and second rails, The second ball bearing may include a second upper ball positioned between the upper ends of the second and third rails, and a second lower ball positioned between the lower ends of the second and third rails.

It is possible to arrange the ball bearings in the vertical direction to provide a slim pull-out unit, thereby improving the space efficiency of the dishwasher.

In addition, 'C' shaped rails can be assembled in three stages to enhance durability, and ball bearings can be used for smooth operation.

1 is a view illustrating a dishwasher according to an embodiment of the present invention.
FIG. 2 is a view showing a draw-out state of a dishwasher basket according to an embodiment of the present invention.
FIG. 3 is an exploded view of a tub, a basket, and a drawing unit of a dishwasher according to an embodiment of the present invention.
FIG. 4 is an exploded view of a drawing unit of a dishwasher according to an embodiment of the present invention.
5 is a cross-sectional view of a drawing unit of a dishwasher according to an embodiment of the present invention.
6 is a view showing a combination of a drawer unit of a dishwasher and a basket according to an embodiment of the present invention.

Hereinafter, embodiments according to the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a view showing a dishwasher 1 according to an embodiment of the present invention, and FIG. 2 is a view showing a drawn-out state of a basket of a dishwasher 1 according to an embodiment of the present invention.

The dishwasher 1 may include a casing 10 forming an outer appearance and a tub 20 provided inside the casing 10. The front surface of the casing 10 can be opened to accommodate the dishes in the tub 20 or draw out the dishes from the tub 20. The door 30 may be coupled to the casing 10 so as to be rotatable so as to open and close the tub 20.

The casing 10 may have a box shape as shown in Fig. However, the shape of the casing 10 is not limited to that shown in FIG. 1, and may be a cylindrical shape, a polyhedral column, or a box shape of a polyhedron other than a hexahedron. In addition, the dishwasher 1 may be formed in various shapes that can be applied to an external shape.

The door (30) is rotated in a predetermined direction to open and close the tub (20). A hinge (not shown) for rotating the door 30 in a predetermined direction may be provided at one end of the door 30.

The door 30 is provided in front of the tub 20 and the user can open the door 30 to house the dishes in the tub 20. [ The door 30 may be provided with a handle (not shown) so that the user can easily open and close the door 30. A detergent container 31 capable of receiving detergent may be provided on the inner side of the door 30.

The tub 20 may be formed in a shape corresponding to the contour of the casing 10. The tub 20 may be formed in a box shape, but the shape of the tub 20 is not limited thereto. The tub 20 may be formed in the shape of a cylinder or a polygonal column, or may be formed in a polygonal box shape other than a hexagonal shape. In addition, the tub 20 need not always be formed in a shape corresponding to the outer shape of the casing 10.

Inside the tub 20, baskets (40, 45) for receiving dishes and a spraying unit (50) for spraying washing water may be provided. The spraying unit 50 can wash the dishes by spraying wash water on the dishes housed in the baskets 40 and 45 using at least one nozzle (not shown).

The baskets 40 and 45 may be wire racks made of wire so that the washing water can pass without being washed. The baskets 40 and 45 may include an upper basket 40 disposed at an upper portion of the tub 20 and a lower basket 45 disposed at a lower portion of the tub 20. [ Hereinafter, for convenience of explanation, the upper basket 40 is referred to as a basket.

As shown in FIG. 2, the basket 40 can be drawn to the front surface of the tub 20. Therefore, the dishwasher 1 may include a draw-out unit 100 for guiding the basket 40 to be drawn out toward the front of the tub 20. [ The dishes can be housed in the basket 40 drawn out along the drawing unit 100 and then the basket 40 can be pushed back into the tub 20 to wash the dishes. Further, after the washing is completed, the basket 40 can be taken out to the front surface of the tub 20 to take out the washed dishes.

FIG. 3 is an exploded view of the tub 20, the basket 40, and the drawing unit 100 of the dishwasher 1 according to an embodiment of the present invention. Only one basket 40 is shown for convenience of explanation and the upper and lower surfaces of the tub 20 are omitted.

The drawer unit 100 may be installed between the tub 20 and the basket 40 so that the basket 40 can be supported by the tub 20. [ As shown in Fig. 3, the pair of drawing units 100 are respectively attached to the inner surface of the tub 20 and can engage with both sides of the basket 40. Fig.

The basket 40 may include a pair of coupling units 60 on both sides so as to correspond to the drawing unit 100 located on both sides of the basket 40. [ The coupling unit (60) can be coupled with the drawing unit (100) to movably support the basket (40). That is, one surface of the drawing unit 100 is attached to the inner surface of the tub 20, and the other surface is coupled to the basket 40.

The withdrawal unit 100 may include a plurality of rails so that the basket 40 can be drawn a desired distance. Hereinafter, a pair of the drawing unit 100 and the combining unit 60 are provided in the same configuration, and therefore, one drawing unit 100 and the combining unit 60 will be described for convenience of explanation.

FIG. 4 is an exploded view of the drawing unit 100 of the dishwasher 1 according to the embodiment of the present invention. FIG. 5 is a perspective view of the drawing unit 100 of the dishwasher 1 according to the embodiment of the present invention 100, respectively.

The drawing unit 100 may include a first rail 110, a second rail 120, and a third rail 130 so as to be capable of being drawn out. The first rail 110 is fixed to the inner surface of the tub 20 and the third rail 130 can be engaged with the basket 40. The second rail 120 is positioned between the first rail 110 and the third rail 130 to increase the movement distance of the basket 40.

The drawing unit 100 may include ball bearings 140 and 150 positioned between the rails 110, 120 and 130 so that the rails 110, 120 and 130 can slide smoothly. The ball bearings 140 and 150 include a first ball bearing 140 positioned between the first rail 110 and the second rail 120 and a second ball bearing 140 positioned between the second rail 120 and the third rail 130 And a second ball bearing (150).

The first ball bearing 140 may include at least one first ball 142 and 144 and a first retainer 145 in which at least one first ball 142 and 144 are received. In addition, the second ball bearing 150 may include at least one second ball 152, 154 and a second retainer 155 in which at least one second ball 152, 154 is received.

The first retainer 145 may include first ball mounts 146, 148 that can receive the first balls 142, 144. The first ball mounting portions 146 and 148 may be spaced apart from each other by a predetermined distance so that the first balls 142 and 144 can be received at predetermined intervals. The first ball mounting portions 146 and 148 include a first upper ball mounting portion 146 positioned at an upper portion of the first retainer 145 and a second lower ball mounting portion 146 positioned at a lower portion of the first retainer 145. [ (Not shown).

The first ball 142 and the first ball 144 are connected to the first upper ball 142 received in the first upper ball mounting portion 146 and the first lower ball 144 received in the first lower ball mounting portion 148 . The first upper ball 142 and the first lower ball 144 may be provided in a plurality of the first upper ball mounting portion 146 and the first lower ball mounting portion 148, respectively.

In addition, the first retainer 145 may be provided in a shape movable along the first rail 110. As shown in FIG. 4, may be provided in the form of a short-length rail. The first rail 110 may include a first stationary rib 111 to prevent the first retainer 145 from being disengaged from the first rail 110.

The second retainer 155 includes a second upper ball mounting portion 156 and a second lower ball mounting portion 158 and the second balls 152 and 154 include a second upper ball 152, And may include a ball 154. The second retainer 155 is provided so as to be movable along the second rail 120 and the second rail 120 is provided with a second fixing rib 121 for preventing the second retainer 155 from coming off .

The first fixed ribs 111 and the second fixed ribs 121 are provided on both sides of the first rail 110 and the second rail 120 so as to move the basket 40 to a position Can be changed.

As shown in FIG. 5, the rails 110, 120, and 130 have connecting portions 112, 122 and 132 extending in the vertical direction, upper ends 114, 124 and 134 bent to one side, 136, as shown in Fig. The upper ends 114, 124 and 134 and the lower ends 116, 126 and 136 of the rails 110, 120 and 130 can be bent in the same shape toward one side of the connecting portions 112, 122 and 132.

That is, the first rail 110, the second rail 120 and the third rail 130 all have connection portions 112, 122 and 132, upper ends 114, 124 and 134 bent toward one side, , 126, 136).

The connection portion, the upper end portion and the lower end portion of the first rail 110 are referred to as a first connection portion 112, a first upper end portion 114 and a first lower end portion 116, A connecting portion of the third rail 130, an upper end portion and a lower end portion thereof are referred to as a second connecting portion 122, a second upper end portion 124 and a second lower end portion 126. The third connecting portion 132, the third upper end portion 134, And the third lower end 136, respectively.

Here, the first connection part 112 may extend further in the vertical direction than the second connection part 122, and the second connection part 122 may extend further in the vertical direction than the third connection part 132. That is, the first rail 110, the second rail 120, and the third rail 130 are longer in the longitudinal direction.

Therefore, at least a part of the second rail 120 can be seated in a space formed by the first upper end portion 114 and the first lower end portion 116 bent toward one side of the first connection portion 112. At least a portion of the third rail 130 may be seated in a space formed by the second upper end portion 124 and the second lower end portion 126 bent toward one side of the second connection portion 122.

That is, the first and second rails 110 and 120 are disposed such that the second upper end portion 124 is positioned below the first upper end portion 114 and the second lower end portion 126 is positioned above the first lower end portion 116, 120 may be disposed. The second rails 120 and the third rails 120 are disposed such that the third upper end portion 134 is positioned below the second upper end portion 124 and the third lower end portion 136 is positioned above the second lower end portion 126. [ 130 may be disposed.

3 to 4, the second upper end portion 124 and the second lower end portion 126 are disposed to face the same direction as the first upper end portion 114 and the first lower end portion 116, The first lower end portion 134 and the third lower end portion 136 may be disposed to face the first upper end portion 114 and the first lower end portion 116 in the opposite direction.

Considering the tub 20 and the basket 40, the first rail 110 and the second rail 120 are arranged such that the upper end portions 114 and 124 and the lower end portions 116 and 126 face the basket 40 The third rail 130 may be disposed to face the inner surface of the tub 20 opposite to the first rail 110 and the second rail 120.

The first upper ball 142 is brought into contact with the lower portion of the first upper end portion 114 and the first lower ball 144 is brought into contact with the upper portion of the first lower end portion 116 A first ball bearing 140 is fitted to the first rail 110. The first balls 142 and 144 rotate and the first ball bearings 140 move along the first rails 110 and the first ball bearings 140 are moved by the first rails 110 .

The first upper ball 142 is brought into contact with the upper portion of the second upper end portion 124 and the second rail 120 is brought into contact with the lower portion of the second lower end portion 126 of the first ball bearing 140). The first lower ball 142 is positioned between the lower portion of the first upper end portion 114 and the upper portion of the second upper end portion 124 and the first lower ball 144 is positioned between the upper portion of the first lower end portion 116 and the upper portion And is located between the lower portion of lower end 126.

The second connection portion 122 is disposed to be in contact with the first connection portion 112 and the first upper and lower end portions 114 and 116 and the second upper and lower end portions 124 and 126 may be positioned in the same direction. In addition, the second rail 120 may include a second fixing protrusion 128 protruding toward the first ball bearing 140 on both sides. At least one side of the second rail 120 can be prevented from deviating from the first ball bearing 140 through the second fixing protrusion 128. [

A second ball bearing 150 is fitted to the opposite surface of the second rail 120 coupled to the first ball bearing 140 and the third rail 130 is fitted to the second ball bearing 150. The second upper ball 152 is positioned between the lower portion of the second upper end portion 124 and the upper portion of the third upper end portion 134 while the second lower ball 154 is positioned between the upper portion of the second lower end portion 126 and the upper And is located between the lower portion of lower end 136.

The third connection part 132 may be arranged to be symmetrical with the second connection part 122 and the second upper and lower end parts 124 and 126 and the third upper and lower end parts 134 and 136 may be arranged in the opposite directions. The third connecting part 132 includes a third fixing protrusion 138 protruding toward the second ball bearing 150 so that at least one side of the third rail 130 is separated from the second ball bearing 150 .

As described above, since the first rail 110, the second rail 120, and the third rail 130 are provided so as to have a vertical length difference, the second rail 120 is supported by the first rail 110, And the third rail 130 can be seated on the second rail 120. A first ball bearing 140 positioned between the first rail 110 and the second rail 120 is connected to a second ball bearing 150 located between the second rail 120 and the third rail 130 As shown in Fig.

Accordingly, the first balls 142 and 144 and the second balls 152 and 154 may be arranged in the vertical direction, respectively. 5, the first upper ball 142 may be located above the second upper ball 152 and the first lower ball 144 may be located below the second lower ball 154 . That is, the first balls 142 and 144 and the second balls 152 and 154 may be arranged in the vertical direction due to the difference in the vertical lengths of the first ball bearing 140 and the second ball bearing 150. This structure can reduce the overall volume of the drawing unit 100.

As shown in FIG. 5, the first rail 110 may be fixed to the inner surface of the tub 20. As shown in FIG. 4, the first rail 110 may include a fixing portion 113 for fixing to the tub 20. A plurality of fixing portions 113 may be provided in the first connection portion 112, and two fixing portions 113 spaced apart at a predetermined interval in FIG. 4 are shown.

The fixing part 113 is protruded toward the inner side of the tub 20 and can firmly contact the tub 20. The fixing part 113 may be provided with a fixing part 172 for forming an opening so that the fixing part 170 can penetrate. The tub 20 may be provided with an opening 22 (FIG. 3) corresponding to the fastener 172, so that the fastening member 170 can pass through the first rail 110 and the tub 20.

The fixing member 170 may be provided in the form of a male screw having a head as shown in Fig. 5, or may be provided in various other forms. The fixing member 170 is fixed to the tub 20 through the first rail 110 and the tub 20 so as to engage with the fixing member 178 located on the outer surface of the tub 20, . The leakage preventing members 174 and 176 are disposed on the inner and outer surfaces of the tub 20 to prevent the washing water from leaking due to the openings 22 formed in the tub 20.

6 is a view showing the combination of the draw-out unit 100 and the basket 40 of the dishwasher 1 according to the embodiment of the present invention.

As described above, the drawing unit 100 can be engaged with the coupling unit 60 of the basket 40, and more specifically, the third rail 130 and the coupling unit 60 are coupled. The coupling unit 60 may include a moving part 64 that engages with the third rail 130 and a handle 66 and a lift part 68 that move the basket 40 up and down.

The lifting portion 68 is fixed to one side of the basket 40 and the moving portion 64 is movably coupled to the basket 40. The lifting portion 68 rises together with the basket 40 and the moving portion 64 descends along the wire of the basket 40 and can maintain its original position when the grip portion 66 is gripped and lowered. The basket 40 can be moved up and down, and the storage of dishes can be facilitated.

The moving part 64 may include a coupling protrusion 62 protruding toward the third rail 130 and the third rail 130 may include a coupling groove 135 into which the coupling protrusion 62 is inserted . At least one coupling protrusion 62 and coupling groove 135 may be provided to correspond to each other. In FIG. 6, two coupling protrusions 62 and coupling grooves 135 are shown. The engaging projections 62 and the engaging grooves 135 may be spaced apart from each other by a predetermined distance. In FIG. 6, one engaging groove 135 is not shown because of the second rail 120.

The engaging protrusion 62 may be formed to include a head portion formed to be wide and the engaging groove 135 may be provided in a path narrower than the width of the head portion. Therefore, the coupling groove 135 is formed as an opening provided with a groove on one side, and the coupling projection 62 can be inserted into the coupling groove 135 along the groove.

The engaging groove 135 may be provided in such a form that the engaging projection 62 is fitted from the upper part to the lower part and can be moved and fixed to one side. Therefore, the engaging projection 62 can be fitted along the path of the engaging groove 135 and fixed in the vertical direction. The engaging member 160 may be detachably coupled to the engaging groove 135 to fix the engaging projection 62 in the left-right direction.

The engaging member 160 can be fitted in the engaging portion 133 protruding toward the basket 40 so that the third rail 130 forms the engaging groove 135. [ And an upper end portion 162 and a lower end portion 166 that fit into the engaging portion 133 of the engaging member 160. The upper end portion 162 may include a hook. In addition, the engaging member 160 may include a protrusion 164 protruding to fit into the engaging groove 135.

That is, the engaging protrusion 62 is fitted along the path provided in the engaging groove 135, and the engaging member 160 is fitted into the engaging portion 133, so that the engaging protrusion 62 can be fixed. The lower end portion 166 of the engaging member 160 is engaged with the engaging portion 133 and the upper end portion 162 of the engaging member 160 is hooked to the engaging portion 133 and can be fixed to the engaging portion 133.

It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

1: dishwasher 20: tub
40: basket 60: coupling unit
100: Draw-out unit 110: First rail
120: second rail 130: third rail
140: first ball bearing 142, 144: first ball
145: first reticle 150: second ball bearing
152, 154: second ball 155: second reactor
160:

Claims (23)

A tub;
A basket disposed within the tub and receiving the dishware;
And a drawing unit provided on both sides of the basket and guiding the basket to be drawn out toward the front of the tub,
The drawing unit includes a first rail, a second rail, a third rail, and a plurality of first balls positioned between the first rail and the second rail, and a second ball positioned between the second rail and the third rail And a plurality of second balls,
Wherein the plurality of first balls are arranged vertically with the plurality of second balls. The method according to claim 1,
Wherein the first rail, the second rail, and the third rail are provided with a connecting portion extending in the vertical direction and a cross section including an upper end portion and a lower end portion bent to one side. 3. The method of claim 2,
Wherein upper and lower ends of the first rail, the second rail, and the third rail are bent in the same shape toward one side of the connecting portion. The method of claim 3,
Wherein the connecting portion of the first rail extends further in the vertical direction than the connecting portion of the second rail and the connecting portion of the second rail extends further in the vertical direction than the connecting portion of the third rail. syringe. 5. The method of claim 4,
The first rail and the second rail are disposed such that the upper end of the second rail is positioned below the upper end of the first rail and the lower end of the second rail is located above the lower end of the first rail,
The second rail and the third rail are disposed such that the third rail upper end is located at a lower portion of the upper end of the second rail and the lower end of the third rail is located at an upper portion of a lower end portion of the second rail. dish washer. 6. The method of claim 5,
Wherein the plurality of first balls include at least one first upper ball positioned between an upper end of the first rail and an upper end of the second rail and a second upper ball positioned between a lower end of the first rail and a lower end of the second rail At least one first lower ball,
Wherein the plurality of second balls include at least one second upper ball positioned between an upper end of the second rail and an upper end of the third rail and a second upper ball positioned between the lower end of the second rail and a lower end of the third rail And at least one second lower ball. The method according to claim 6,
A first retainer for receiving said at least one first upper ball and said at least one first lower ball, and a second retainer for receiving said at least one second upper ball and said at least one second lower ball Wherein the dishwasher is a dishwasher. The method of claim 3,
The upper and lower ends of the second rail are disposed to face the same direction as the upper and lower ends of the first rail,
Wherein an upper end portion and a lower end portion of the third rail are disposed so as to face the upper and lower ends of the first rail. The method according to claim 1,
Wherein the drawer unit includes a first retainer positioned between the first rail and the second rail and a second retainer located between the second rail and the third rail. 10. The method of claim 9,
The first retainer includes a plurality of first ball mounting portions on which the plurality of first balls are respectively mounted and the second retainers include a plurality of second ball mounting portions on which the plurality of second balls are mounted Dishwasher. 10. The method of claim 9,
Wherein the first retainer is movably provided along the first rail, the first rail includes a first fixing rib so that the first retainer does not deviate from the first rail,
Wherein the second retainer is movably installed along the second rail, and the second rail includes a second fixing rib so that the second retainer does not deviate from the second rail. The method according to claim 1,
Wherein the first rail is attached to the inner surface of the tub and the third rail engages the basket and the second rail is positioned between the first rail and the third rail. . 13. The method of claim 12,
Said basket comprising a coupling unit on each side,
Wherein the coupling unit engages with the third rail to movably support the basket. 14. The method of claim 13,
Wherein the coupling unit includes a coupling protrusion protruding toward the third rail,
And the third rail includes an engaging groove into which the engaging projection is fitted. 15. The method of claim 14,
And an engaging member detachably coupled to the third rail so that the engaging projection inserted into the engaging groove can be fixed. A tub;
A basket disposed within the tub to receive the dishware;
A first rail fixed to an inner wall of the tub;
A second rail movably installed along the first rail;
A third rail movably installed along the second rail and coupled to the basket;
A first ball bearing positioned between the first and second rails and movably disposed along the first rail;
A second ball bearing located between the second rail and the third rail and movably disposed along the second rail;
. 17. The method of claim 16,
Wherein the first ball bearing includes at least one first ball and a first retainer in which the at least one first ball is received,
Wherein the second ball bearing comprises at least one second ball and a second retainer in which the at least one second ball is received. 18. The method of claim 17,
Wherein the at least one first ball and the at least one second ball are arranged in a vertical direction, respectively. A tub for washing the tableware;
A basket provided in the tub for storing dishes;
And a drawer unit installed between the tub and the basket and including a plurality of rails to guide movement of the basket,
Wherein the plurality of rails include a first rail attached to the tub, a second rail disposed at one side to abut the first rail, and a third rail having one side abutting the second rail and engaging the basket, ,
Wherein the first rail extends up and down from the second rail, and the second rail extends up and down from the third rail. 20. The method of claim 19,
Wherein the plurality of rails are provided in a cross section including a vertically extending connection portion and an upper end portion and a lower end portion bent in the same direction in the connection portion. 21. The method of claim 20,
Wherein the first rail and the second rail are disposed such that an upper end portion and a lower end portion thereof face the basket, and the third rail is disposed in a direction opposite to the first rail and the second rail. 22. The method of claim 21,
Wherein the drawing unit includes a first ball bearing positioned between the first rail and the second rail and a second ball bearing positioned between the second rail and the third rail. 23. The method of claim 22,
The first ball bearing includes a first upper ball positioned between the upper ends of the first and second rails and a first lower ball positioned between the lower ends of the first and second rails,
The second ball bearing includes a second upper ball positioned between the upper ends of the second and third rails and a second lower ball positioned between the lower ends of the second and third rails. Dishwasher.
KR1020140001522A 2014-01-06 2014-01-06 Dish washer KR20150081744A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
KR1020140001522A KR20150081744A (en) 2014-01-06 2014-01-06 Dish washer
US14/587,731 US20150190034A1 (en) 2014-01-06 2014-12-31 Dishwasher
EP15150114.5A EP2891447A1 (en) 2014-01-06 2015-01-05 Dishwasher
CN201510004634.9A CN104757923A (en) 2014-01-06 2015-01-06 Dishwasher

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KR1020140001522A KR20150081744A (en) 2014-01-06 2014-01-06 Dish washer

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EP2891447A1 (en) 2015-07-08
CN104757923A (en) 2015-07-08

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