KR101286440B1 - A rack structure for dish washer - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a dishwasher, and more particularly, to a dish rack structure of a dishwasher in which rotation of a rack roller provided in a dish rack is selectively restricted.

A dish rack structure of a dishwasher according to the present invention includes: a table rack in which a tableware is housed; A plurality of rack rollers for allowing the table rack to move forward and backward; A roller support shaft formed on a lower side of the table rack and on which the rack roller is mounted; A pressing member mounted on the roller support shaft; And a rotation preventing member mounted on an outer side of the pressing member; And the rotation preventing member is configured to selectively restrict the rotation of the rack roller while being pressed by the pressing member in accordance with the movement in the forward and backward directions. According to the present invention, the rotation of the rack roller can be restricted in a state in which the lower rack is drawn out by the rotation preventing member, so that the lower rack can be maintained in a fixed state.

Table rack, rack roller, anti-rotation member

Description

A rack structure for dish washer < RTI ID = 0.0 >

1 is a perspective view schematically showing a dishwasher according to the present invention;

2 is a perspective view of a lower rack having a rack structure according to the present invention,

3 is a view showing a state in which the roller rotation regulating structure is coupled to the lower rack;

4 is a perspective view of a rotation preventing member according to the present invention;

5 is a view showing a state of the anti-rotation member in a state in which the rotation of the rack roller according to the present invention is restricted.

6 is a view showing the state of the anti-rotation member in a state in which the rack roller according to the present invention is rotatable.

Description of the Related Art

100: dishwasher 110: upper rack

120: Lower rack 126: Rack roller

127: roller supporting shaft 128: pressing member

200: anti-rotation member

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a dishwasher, and more particularly, to a dish rack structure of a dishwasher in which rotation of a rack roller provided in a dish rack is selectively restricted.

Generally, a dishwasher is a household appliance that cleans food waste buried on a surface of a dish by high-pressure washing water sprayed from an injection nozzle. In detail, the dishwasher is composed of a tub on which a washing tub is formed, and a sump mounted on a bottom surface of the tub to store washing water. The washing water is moved to the spray nozzle by the pumping action of the washing pump installed inside the sump, and the washing water moved to the spray nozzle is sprayed at a high pressure through the spray hole formed at the end of the spray nozzle. Then, the washing water sprayed at the high pressure hits the surface of the tableware, so that dirt such as food waste or the like on the tableware is dropped to the bottom of the tub.

In the meantime, at least one table rack for storing dishes is installed in the dishwasher, and generally two are installed at the upper side and the lower side of the inside of the tub so as to be drawable.

In detail, the utensil such as a bowl or a cup, as well as a spoon is housed inside the utensil rack. In addition, since the dishes and the sizes of the dishes accommodated in the dish rack are various, it is generally impossible to arrange them at regular intervals. Further, the dishware such as a bowl is turned upside down and stored at a slight inclination so that the moisture on the surface of the dish is quickly controlled.

A roller for facilitating the back and forth movement of the table rack is provided on the lower side of the table rack. Then, the table rack is slid by the roller so as to be drawn out to the outside of the tub.

However, according to the table rack as described above, the roller can be freely rotated in a state of being mounted on the table rack. Therefore, in the process of storing the tableware in a state where the lower rack is drawn out to the outside, There arises a problem that the rack is moved in the forward and backward directions.

In addition, when the table rack is moved during the process of storing the tableware, the user can not safely store the tableware, thereby causing the user to feel anxiety and inconvenience.

In addition, when the table rack is moved in the process of storing the tableware, there is a problem that the tableware stored in the tableware rack is damaged.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a dish rack structure for a dishwasher in which rotation of a rack roller provided in a dish rack is controlled.

It is another object of the present invention to provide a table rack structure of a dishwasher which allows a user to safely store a tableware by restricting movement of the tableware rack in the process of storing the tableware in the tableware rack.

According to an aspect of the present invention, there is provided a dishwasher rack structure including a table rack in which a tableware is housed; A plurality of rack rollers for allowing the table rack to move forward and backward; A roller support shaft formed on a lower side of the table rack and on which the rack roller is mounted; A pressing member mounted on the roller support shaft; And a rotation preventing member mounted on an outer side of the pressing member; And the rotation preventing member is configured to selectively restrict the rotation of the rack roller while being pressed by the pressing member in accordance with the movement in the forward and backward directions.

The rotation of the rack roller can be restricted in a state in which the lower rack is pulled out by the rotation preventing member by the dish rack structure of the dishwasher according to the present invention as proposed to maintain the fixed state of the lower rack .

Further, as the rotation of the roller is restricted in the process of storing the tableware in the lower rack, the user can safely store the tableware.

Hereinafter, specific embodiments of the present invention will be described with reference to the drawings. It is to be understood, however, that the spirit of the invention is not limited to the embodiments shown and that those skilled in the art, upon reading and understanding the spirit of the invention, may easily suggest other embodiments within the scope of the same concept.

1 is a perspective view schematically showing a dishwasher according to the present invention.

Referring to FIG. 1, the dishwasher 100 according to the present invention includes a case 102 having an outer appearance and an open front, and a door 104 for sealing the front of the opened case 102.

In the dishwasher 100, a tub 106 for receiving washing water is placed, and a sump 170 for collecting wash water and filtering foreign matter is disposed on the lower side of the tub 106.

The upper and lower racks 110 and 120 are installed at upper and lower sides of the tub 106 and slid out to the outside of the tub 108. The upper and lower racks 110 and 120, 110) 120 are formed on the outer circumferential surface of the injection nozzle 150 (160).

A rail 108 for supporting the movement of the upper rack 110 extends in the front and rear direction on the side of the tub 106. A filter 172 is placed below the tub 106 to filter foreign matter from the washing water passing through the filter 172.

The door 104 is coupled to the case 102 by a hinge (not shown) at the lower end of the door 104 and is vertically rotatable about the hinge by a user's operation.

An exhaust fan 180 is formed at a predetermined position of the door 104 so that the internal air of the tub 106 can be forcibly discharged to the outside by the exhaust fan 180. A rinsing box 185 is formed on the inner side surface of the door 104 to supply rinsing during cleaning.

In addition, a detergent box 190 is installed at one side of the rinse box 185 to allow a certain amount of detergent to be supplied from the detergent container 200 during operation of the dishwasher 100.

The operation of the dishwasher 100 according to the present invention will now be described. First, when the operation button of the dishwasher 100 is pressed, the washing water flows into the sump 170. The washing water flowing into the sump 170 is pumped to the upper nozzle 150 and the lower nozzle 160 by a predetermined pumping action.

Here, the pumped wash water is alternately supplied to the upper nozzle 150 and the lower nozzle 160 at predetermined time intervals. Then, during the cleaning, the cover of the detergent container is automatically opened to supply the detergent.

Accordingly, in the tub 106, the washing water is sprayed through the lower nozzle 160 for a predetermined time, and the washing water is sprayed through the upper nozzle 150 after a predetermined time, do.

Hereinafter, the structure of the table rack will be described in detail.

FIG. 2 is a perspective view of a lower rack having a rack structure according to the present invention, and FIG. 3 is a view showing a state where a roller rotation regulating structure is coupled to the lower rack.

Referring to FIGS. 2 and 3, a lower rack 120 having a rack structure according to the present invention includes an outer frame 122 forming a frame of the lower rack 120, And a rack handle 121 formed to facilitate the pulling out of the lower rack 120.

In detail, the outer frame 122 includes a horizontal frame 123 having a closed curve shape having upper and lower frames, a vertical frame 124 having both ends connected to the horizontal frame 123 and recessed to a predetermined depth, .

The vertical frame 124 has front and rear rack frames 124a one end of which is coupled to the front of the horizontal frame 123 and the other end of which is coupled to the rear of the horizontal frame 123, And a left and right rack frame 124b coupled to the left side of the horizontal frame 123 and having the other end coupled to the right side of the horizontal frame 123.

Therefore, by providing a plurality of the front and rear rack frames 124a and the left and right rack frames 124b, the bottom surface of the lower rack 110 can be formed into a net shape, so that dishes can be stored.

The front and rear rack frames 124a and the right and left rack frames 124b are provided with a plurality of tines 130 extending upward to accommodate flat dishes such as plates.

The lower rack 120 includes a plurality of rack rollers 126 for moving the lower rack 120 in the forward and backward directions and a rotation preventing member 200 for restricting rotation of the rollers 126. [ Is mounted.

In detail, a roller support shaft 127 on which the rack roller 126 is mounted is formed at both lower ends of the lower rack 120. The roller support shaft 127 serves as a rotation axis of the rack roller 126 and the lower end of the roller support shaft 127 is bent outward so that the rack roller 126 .

The roller support shaft 127 is further provided with an anti-rotation member 200 for restricting the rotation of the rack roller 126.

Specifically, the anti-rotation member 200 is coupled to a first roller support shaft on which the first roller is mounted, and a second roller support shaft formed on one side of the first roller support shaft and to which the second roller is mounted, And is located inside the rack roller 126.

The rotation preventing member 200 is formed to be movable in the forward and backward directions while being coupled to the roller supporting shaft 127.

Here, the first roller means any one of the rack rollers 126, and the second roller means a rack roller mounted at a position close to the first roller.

The roller support shaft 127 is provided with a pressing member 128 for increasing the pressing force for pressing the rack roller 126 when the rotation preventing member 200 restricts rotation of the rack roller 126, Is further mounted inside the rotation preventing member (200).

The pressing member 128 is first mounted on each of the roller supporting shafts 127 and then the rotation preventing member 200 is mounted on the first roller supporting shaft and the second roller supporting shaft at the same time And finally the rack roller 126 is mounted on the outer side of the anti-rotation member 200.

In this embodiment, the rotation preventing member 200 is mounted on the two roller supporting shafts. Alternatively, the rotation preventing member 200 may be coupled to three or more roller supporting shafts 127 to rotate the respective rack rollers 126 It can be configured to effectively regulate.

Hereinafter, the structure of the anti-rotation member 200 will be described in detail.

4 is a perspective view of a rotation preventing member according to the present invention.

Referring to FIG. 4, the anti-rotation member 200 according to the present invention is formed to be longer than the width.

The length (200) of the anti-rotation member is longer than the distance between the first roller support shaft and the second roller support shaft, and is simultaneously coupled to at least two roller support shafts.

In detail, an insertion hole 202 through which the first roller support shaft and the second roller support shaft can be inserted is formed on both sides of the anti-rotation member 200.

The insertion hole 202 is elongated in the forward and backward directions so as to be movable in the forward and backward directions while the rotation preventing member 200 is mounted on the roller supporting shaft 127, Let's guide this.

Rotation restricting portions 204 are formed on both sides of the anti-rotation member 200 to restrict the rotation of the rack rollers 128.

In detail, the rotation restricting portion 204 is formed as a predetermined portion of the rotation preventing member 200 is cut in a round shape, and has a predetermined elastic force. The rotation restricting portion 204 is formed to be curved to one side and protrude to the outside of the rotation preventing member 200.

The width of the rotation preventing member 200 including the rotation restricting portion 204 is smaller than the distance between the pressing member 128 and the rack roller 126.

The rotation regulating portion 204 presses the rack roller 126 when it is placed between the pressing member 128 and the rack roller 126 so that rotation of the rack roller 126 is regulated .

That is, since the width of the rotation preventing member 200 including the rotation restricting portion 204 is smaller than the interval between the pressing member 128 and the rack roller 126, The rotation regulating portion 204 is elastically deformed and the both sides of the pressing member 128 and the rack roller 126 are pressed in the process of being placed between the member 128 and the rack roller 126, The rotation of the rack roller 126 is regulated.

Here, the pressing force applied to the rack roller 126 can be adjusted by the thickness of the pressing member 128 or the anti-rotation member 200.

That is, as the thickness of the pressing member 128 or the rotation preventing member 200 increases, the force by which the rotation regulating portion 204 presses the rack roller 126 becomes larger.

It is preferable that the elastic force of the rotation regulating portion 204 is formed to be smaller than the pressing force of the rack roller 126 and the pressing member 128 so that the rotation of the rack roller 126 is effectively regulated.

Therefore, the rotation of the rack roller 126 can be restricted by the rotation restricting portion 204, so that the back and forth movement of the lower rack 120 is regulated in a state in which the lower rack 120 is drawn out to the outside So that the user can safely store the tableware.

A handle 206 is formed on one side of the anti-rotation member 200 to allow the user to grip the anti-rotation member 200.

Accordingly, the user can move the anti-rotation member 200 in the forward and backward directions while gripping the handle 206.

Here, the handle 206 may be formed on a side surface, a front end portion, or a rear end portion of the anti-rotation member 200, and the formation position of the handle portion 206 is not limited.

Hereinafter, the operation of the anti-rotation member 200 will be described.

FIG. 5 is a view showing a state of the anti-rotation member in a state in which rotation of the rack roller according to the present invention is restricted, FIG. 6 is a view showing the state of the anti- Fig.

5 and 6, first, the door 104 of the dishwasher 100 is opened and the lower rack 120 is taken out to the outside. When the lower rack 120 is pulled out, the rotation preventing member 200 is pulled forward while holding the knob 206 so that rotation of the rack roller 126 is restricted. Then, the anti-rotation member 200 is pulled forward while being coupled to the roller support shaft 127.

Then, the rotation regulating portion 204 is elastically deformed, and is positioned between the pressing member 128 and the rack roller 126. At the same time, the pressing member 128 and the rack roller 126 are pressed do.

The rotation of the rack roller 126 is regulated by the urging force of the rotation regulating portion 204. Then, in a state in which the rotation of the rack roller 126 is restricted, the user holds the tableware.

After the user completes the storage of the tableware, the user pushes the rotation preventing member 200, which has been moved forward while holding the grip 206, toward the rear of the lower rack 120.

 Then, the rotation preventing member 200 moves backward, and the rotation restricting portion 204 is released between the pressing member 128 and the rack roller 126. Then, the pressing force for pressing the rack roller 126 is removed, so that the rack roller 126 can be rotated.

According to the present invention, rotation of the rack roller can be restricted in a state that the lower rack is drawn out by the rotation preventing member, so that the lower rack can be maintained in a fixed state.

In addition, since the rotation of the rack roller is restricted in the process of housing the tableware in the lower rack, the user can safely store the tableware, and the effect of preventing the tableware from being damaged due to the movement of the lower rack during the storage of the tableware have.

Claims (7)

Tableware rack in which dishes are stored; A plurality of rack rollers for allowing the table rack to move forward and backward; A roller support shaft formed on a lower side of the table rack and on which the rack roller is mounted; A pressing member mounted on the roller support shaft; And A rotation preventing member mounted on the outside of the pressing member; Lt; / RTI > The anti- And is configured to selectively restrict the rotation of the rack roller while being pressed by the pressing member in accordance with the movement in the forward and backward directions. The method according to claim 1, Wherein the rotation preventing member is simultaneously coupled to at least two roller support shafts. The method according to claim 1, Wherein the rotation preventing member is mounted while passing through the roller supporting shaft formed on the outer side of the pressing member. The method according to claim 1, The anti- An insertion hole which is elongated in the front-rear direction and through which the roller support shaft passes, And a rotation restricting portion that is pressed by the pressing member to restrict rotation of the rack roller. 5. The method of claim 4, The rotation restricting portion is formed by cutting a predetermined portion of the rotation preventing member, and has a predetermined elastic force. The method according to claim 1, Wherein the rotation preventing member further includes a handle portion for facilitating the user's gripping of the dishwasher. 5. The method of claim 4, The anti- And is movable in the front-rear direction in a state of being mounted on the roller support shaft, Wherein the rotation restricting portion is pressed by the pressing member when moving forward to regulate the rotation of the rack roller.

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