KR101054105B1 - Door opening and closing structure of dishwasher - Google Patents

Abstract

The present invention relates to a dishwasher, and more particularly, to an opening and closing device provided in the dishwasher door.

Door opening and closing structure of the dishwasher according to the present invention door; The tub is opened and closed by the door, the tub is formed therein; A latch protruding from one side of an inner wall of the door; A latch holder mounted inside the tub, the latch holder being vertical to the latch and vertically moving along an outer circumferential surface of the latch; And a micro switch mounted inside the tub and in contact with an end of the latch.

With the dishwasher provided with a door opening and closing structure according to the present invention, the user can easily open and close the door without applying a large force.

Latch Holder, Hook, Micro Switch, Tub

Description

Door opening and closing structure of dishwasher {A door of dish washer}

1 is a cross-sectional view showing a structure of a conventional dishwashing door opening and closing device.

Figure 2 is a cross-sectional view of the dishwasher with a door opening and closing structure according to the spirit of the present invention.

Figure 3 is an enlarged cross-sectional view showing a door opening and closing structure according to the spirit of the present invention.

4 is a cross-sectional view showing a state in which the door is completely closed.

5 is a cross-sectional view showing a state in which the door is completely open.

<Description of the symbols for the main parts of the drawings>

100: dishwasher 110: tub 111: door

120: upper rack 130: lower rack 140: water guide

150: upper nozzle 160: lower nozzle 170: sump

180: washing pump 190: motor 200: latch holder

210: latch holder shaft 220: spring support plate 230: spring

240: support bracket 250: bracket fastening portion

The present invention relates to a dishwasher, and more particularly, to an opening and closing device provided in the dishwasher door.

In general, the dishwasher is a convenient kitchen appliance that automatically removes food debris such as rice paste attached to the tableware by spraying high-pressure washing water and then removes it.

1 is a cross-sectional view showing a conventional dish washing door opening and closing device structure.

Referring to FIG. 1, a conventional dishwasher door opening and closing device has a door 3, a door handle 9 held by a user by hand to open and close the door 3, and integrally with the door handle 9. And a rocker 11 to allow the door 3 to be fixed, and a pusher portion 16 to cause the rocker 11 to descend when the door handle 9 is lifted up.

In addition, the locker holder 13 which is provided in the dishwasher main body and fixes the door 3, and which is inserted into the hook insertion hole 15 provided in the upper portion of the rocker 11, is inserted into the rocker holder 13. Included is a hook 14 provided on the front portion of the. In addition, the leaf spring 16 is inserted into the rocker holder 13.

In addition, the pressing portion 12 protrudes vertically downward on the bottom of the handle, and is pressed by the pressing portion 12, so that the micro switch 10 for detecting whether the door is opened or closed is the pressing portion 12 Is located at the bottom of the

In the conventional dishwasher door opening and closing device as described above, when the door 3 is opened while the door 3 is closed, the user pushes the handle 9 upward and the pusher part 16 of the handle descends. When the handle 9 is pulled forward, the hook 14 comes out of the hook insertion groove 15.

In addition, as the door handle 9 is lifted upward, the contact portion of the pressing part 12 and the micro switch 10 is in an off state.

On the contrary, when the door handle 9 is pushed to close the door 3, the hook 14 is pushed into the hook insertion groove 15 along the inclined surface of the rocker 11. Here, by the elastic force of the leaf spring 6 inserted into the rocker holder 13, the hook 14 is lifted up slightly when going up the inclined surface of the rocker (11). When the hook 14 is completely inserted into the hook insertion groove 15, the hook 14 is seated on the front chin of the rocker 11, so that the door 3 is completely closed.

In addition, the pressing part 12 presses the contact of the micro switch 10 to turn on the micro switch 10.

However, such a conventional dishwasher door opening and closing device has to be pushed up and then pulled forward again when opening the door, the operation is cumbersome and the user experiences inconvenience.

In addition, in the manufacturing process of the door opening and closing device, there is a problem that the number of parts is increased, the manufacturing cost is increased, and the manufacturing process is long.

The present invention has been proposed to solve the above problems, and an object of the present invention is to provide a door opening and closing structure of a dish washing machine that can be easily opened and closed by a user.

In addition, an object of the present invention is to provide a door opening and closing structure of a dish washing machine which can reduce the number of parts required for manufacturing and simplify the manufacturing process.

Door opening and closing structure of the dishwasher according to the present invention for achieving the above object is a door; The tub is opened and closed by the door, the tub is formed therein; A latch protruding from one side of an inner wall of the door; A latch holder mounted inside the tub, the latch holder being vertical to the latch and vertically moving along an outer circumferential surface of the latch; And a micro switch mounted inside the tub and in contact with an end of the latch.

By the dishwasher door opening and closing structure according to the configuration as described above there is an effect that the user can easily open and close the door.

Hereinafter, specific embodiments of the present invention will be described in detail with reference to the drawings. It should be understood, however, that there is no intention to limit the scope of the present invention to the embodiment shown, and that other embodiments falling within the scope of the present invention may be easily devised by adding, Can be proposed.

2 is a cross-sectional view of the dish washer provided with a door opening and closing structure according to the spirit of the present invention.

Referring to FIG. 2, the dish washing machine 100 having a door opening and closing structure according to the present invention has an outer shape, a tub 110 having a dish washing tank formed therein, and a washing tank formed on the front surface of the tub 110. Door 111 for opening and closing the sump, and the sump 170 is formed in the center of the bottom surface of the tub 110 to store the wash water.

In addition, the washing pump 180 is connected to the sump 170 and pumps the washing water stored in the sump 170 at a high pressure, and is attached to a rear surface of the washing pump 180 to drive the washing pump 180. The motor 190 is included.

In addition, the water guide 140 and the upper surface of the sump 170, which is a path for the washing water pumped from the washing pump 180 is moved, formed on the bottom of the washing tank to spray the washing water upwards A lower nozzle 160 and an upper nozzle 150 attached to an upper portion of the water guide 140 and extending in a vertical direction from the water guide 140 and positioned at a central portion of the washing tank, It is formed on the ceiling includes a top nozzle 155 for spraying the washing water vertically downward.

In addition, the upper rack 120 is mounted on the upper side of the upper nozzle 150 so that the dishes are washed by the upper nozzle 150, and the lower nozzle 160 so that the dishes are washed by the lower nozzle 160. Lower rack 130 is mounted to the upper side of the) is included.

In detail, the upper rack 120 is supported by a rail (not shown) provided on the inner surface of the tub 110, and performs the front and rear movement.

Hereinafter will be described the operation of the dishwasher 100 according to the present invention.                     

First, the user opens the door 111 of the dishwasher 100 and pulls the upper rack 120 and / or lower rack 130 to the outside of the washing tank. In addition, dishes are stored in the racks 120 and 130. Then, the door 111 is closed and power is applied to the dishwasher.

On the other hand, when power is applied to the dishwasher 100 and a washing step is performed, washing water flows into the sump 170, and when the washing water inflow step is completed, the motor 190 operates. In addition, by rotating an impeller (not shown) provided in the washing pump 180 coupled to the motor 190, the washing water is pumped to the lower nozzle 160 and the water guide 140.

In addition, the wash water pumped to the water guide 140 is finally moved to the top nozzle 155, the upper nozzle 150 is injected into the washing tank. In addition, the dishes stored in the racks 120 and 130 are washed by the sprayed washing water.

Here, the top nozzle 155 sprays the washing water vertically downward, and the upper nozzle 150 sprays the washing water vertically upward, thereby washing the dishes stored in the upper rack 120.

In addition, the lower nozzle 160 is sprayed the washing water vertically upward, the dishes stored in the lower rack 130 is washed. In addition, by forming an injection hole in the bottom surface of the upper nozzle 150, the washing water is sprayed in both the up and down directions, it can be configured to simultaneously wash the upper side of the tableware accommodated in the lower rack (130).                     

In addition, when the washing step is completed, the dirty washing water collected in the sump 170 is filtered by a filter (not shown). In addition, the washing water filtered with foreign matter is discharged to the outside of the dishwasher 100 through a drain pump (not shown).

In addition, when the washing water is discharged to the outside, clean washing water is introduced into the sump 170 again through an inlet, and sprayed through the spray nozzles 150 and 160 in the same manner as the washing step. The dishware is rinsed by the sprayed clean water.

In addition, when the rinsing step is completed, by going through the drying step, the washing operation is completed.

Figure 3 is an enlarged cross-sectional view showing a door opening and closing structure according to the spirit of the present invention, Figure 4 is a cross-sectional view showing a state that the door is completely closed, Figure 5 is a cross-sectional view showing a state that the door is completely open.

3, 4, and 5, the door opening and closing structure according to the present invention includes a door 111 and a latch 112 protruding to a predetermined length from an upper side of an inner wall of the door 111. do.

In detail, the latch 112 has a sharp arrowhead-shaped hook 113 having a locking jaw formed at the end thereof.

In addition, the door opening and closing structure according to the present invention is a latch holder 200 which is attached to the tub 111 and the inside of the tub 111, the hook 113 formed on the end of the latch 112, the latch holder 200. ), A latch holder shaft 210 extending from the upper surface of the latch holder 200 to a predetermined length, and a spring 230 inserted between the latch holder shaft 210.

In detail, a spring support plate 220 protrudes in a direction perpendicular to the latch holder shaft 210 at a predetermined position of the latch holder shaft 210 to allow the spring 230 to be compressed or expanded. In addition, a support bracket 240 for supporting the latch holder 200, accommodating the spring therein, and a bracket fastening part 250 for fastening the support bracket 240 are included. At this time, the spring support plate 220 may be referred to as a spring support.

In addition, a latch insertion groove 260 is formed for the latch 112 to be inserted into the tub 110, and the door 111 is opened or closed at approximately a point where the latch 112 meets the end of the latch hook 113. The micro switch 300 for sensing is mounted, and a contact terminal 310 for contacting the hook 113 is protruded on one side of the micro switch 300.

In addition, the tub 110 is formed with a latch insertion groove 260 into which the latch 112 is inserted.

Hereinafter, the function of the door opening and closing structure will be described.

First, when the door 111 is completely closed, as shown in FIG. 4, the end portion of the hook 113 is in a state of pressing the contact terminal 310 attached to the micro switch 300. In addition, the latch holder 200 is lowered to the rear stepped portion of the hook 113, so that the latch 112 is firmly supported so as not to fall out. As a result, the latch 112 is constrained by the latch holder 200, so that the door does not open by itself.

On the other hand, when the door 111 starts to open, the latch 112 fixedly attached to the door 111 is pushed back. In addition, the latch holder 200 is raised to the highest point along the rear surface of the hook 113. As the latch holder 200 rises, the spring 230 inserted into the latch holder shaft 210 is compressed. Thus, the spring 230 is in the maximum compressed state when the latch holder 200 reaches its highest point.

In addition, when the latch holder 200 descends again at the highest point of the hook 113 and reaches the lowest point of the hook 113, the spring 230 is returned to its original state. The door 111 is completely detached from the tub 110, and the contact terminal 310 pressed by the hook 113 also protrudes in its original state. In addition, when the hook 113 is completely separated from the contact terminal 310, the micro switch 300 is turned off and the dishwasher is not operated.

On the other hand, when the door 111 is closed again, the above described operation procedure is performed in reverse.

Here, the opening and closing force of the door 111 can be determined by adjusting the elastic modulus of the spring 230 inserted into the latch holder shaft 210.

In detail, if the elastic modulus of the spring 230 is too high, a lot of user's force may be put into opening and closing the door 111, and if the elastic modulus is too low, the door may open spontaneously. It is preferable to use a spring 230 having a.

By the dishwasher equipped with a door opening and closing structure according to the present invention constituting the configuration as described above, the user can easily open and close the door without applying a large force.

In addition, by simplifying the structure of the door opening and closing device, it is possible to reduce the manufacturing cost, there is an effect that can simplify the manufacturing process.

Claims (8)

door; The tub is opened and closed by the door, the tub is formed therein; A latch protruding from one side of an inner wall of the door; A latch holder mounted inside the tub, the latch holder being vertical to the latch and vertically moving along an outer circumferential surface of the latch; And A micro switch mounted inside the tub and in contact with an end of the latch; The latch holder, A latch holder shaft extending in an upper portion to a predetermined length; A spring fitted to the latch holder shaft; And Door opening and closing structure of the dishwasher comprising a; spring support for compressing or expanding the spring. The method of claim 1, The end of the latch is a door opening and closing structure of the dishwasher, characterized in that the hook is formed hook. The method of claim 2, The micro switch is a door opening and closing structure of the dishwasher, characterized in that the contact terminal is pressed by the hook in accordance with the opening and closing of the door. The method of claim 1, The tub has a door opening and closing structure of the dishwasher, characterized in that the latch insertion groove for inserting the latch is formed when the door is closed. A latch having a hook formed at an end thereof; A latch holder formed perpendicular to the latch and moving along an outer circumferential surface of the latch; And Includes; micro switch in contact with the hook formed on the latch holder, The latch holder, A latch holder shaft extending in an upper portion to a predetermined length; A spring fitted to the latch holder shaft; And Door opening and closing structure of the dishwasher comprising a; spring support for compressing or expanding the spring. delete delete The method of claim 5, A support bracket for supporting the latch holder; Door opening and closing structure of the dishwasher, characterized in that it further comprises a bracket fastening portion for fixing the support bracket.

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