KR101070104B1 - A door locking apparatus of a dish washer - Google Patents

Abstract

The present invention relates to a dishwasher, and more particularly, to a door lock device for preventing the washing water flows into the switch attached to the door lock device inserted into the door of the dishwasher to cause electrical problems.

The door lock device of the dishwasher according to the present invention comprises a door; A latch mounted inside the door to engage with the tub; A latch body including a latch accommodating space formed at a central portion to accommodate the latch and a switch cover formed at least on one side thereof with a predetermined width; A switch attached to a side of the latch body and having a contact terminal at a rear surface thereof; And a latching jaw protruding from a side surface of the latch body to a predetermined height to support the switch, and supporting a rear surface of the switch, wherein the switch cover is formed to be curved toward the contact terminal side, and the contact terminal A water flow prevention rib is provided to prevent water from flowing to the side, and the contact terminal has a characteristic of being located between the locking jaw and the water flow prevention rib.

 door; A latch mounted inside the door to engage with the tub; A latch body including a latch accommodating space formed at a central portion to accommodate the latch and a switch cover formed at least on one side thereof with a predetermined width; And a switch attached to the side of the latch body and protected from the washing water flowing down by the switch cover.

The door lock device of the dishwasher according to the present invention prevents a small amount of washing water flowing through the latch holder insertion port from flowing into the switch, thereby preventing the switch from being damaged or causing electrical problems such as a short circuit or a short circuit. .

Latch, Latch Body, Switch, Latch Holder

Description

A door locking apparatus of a dish washer

1 is a front view showing a conventional general door lock.

2 is a rear view of the door lock.

Figure 3 is a schematic cross-sectional view showing a dish washer provided with a door lock according to the spirit of the present invention.

Figure 4 is a perspective view showing a latch that is a component of the door lock according to the spirit of the present invention.

5 is a perspective view showing a latch body that is a component of the door lock according to the spirit of the present invention.

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

100: dishwasher 110: tub 120: upper rack

130: lower rack 140: water guide 150: upper nozzle

160: lower nozzle 170: sump 180: washing pump

190: Motor 200: Latch Body 210: Latch Lock Insertion Port

220: door fastening plate 250: switch cover 300: latch

310: latch holder 320: latch holder hinge 330: latch spring

340: latch link hinge 400: switch 410: contact terminal

The present invention relates to a dishwasher, and more particularly, to a door lock device for preventing the washing water flows into the switch attached to the door lock device inserted into the door of the dishwasher to cause electrical problems.

In general, the dishwasher is a device for washing the dishes mounted in each rack by spraying the washing water to the upper rack and the lower rack.

1 is a front view showing a conventional general door lock, Figure 2 is a rear view of the door lock.

1 and 2, the conventional door lock is mounted recessed inside the door.

In addition, the door locking device includes a latch body 10 and a latch 20 which is accommodated in the latch body 10 and coupled to a latch lock protruding from the front side of the tub.

In detail, the latch 20 includes a latch holder 21 and a latch link 22 connected to a lower portion of the latch holder 21. In addition, a latch lock seating groove 27 into which the latch lock is inserted is formed at a front portion of the latch holder 21, and the latch holder 21 and the latch link 22 are coupled by a variable hinge 26. . The variable hinge 26 is coupled to the latch holder 21 and the latch link 22 to rotate with each other, refers to the hinge is not fixed to the hinge axis.

In addition, a latch spring 23 is inserted into an outer circumferential surface of the latch link 22, and a latch link hinge 24 is formed at a lower end of the latch link 22 to engage with the latch body 10.

On the other hand, the latch body 10 is a door fastening plate 15 to be fixed to the inside of the door, a latch lock insertion hole 11 formed in the center of the door fastening plate 15, the switch seating formed in the lower end Part 12 is included.

In addition, a latch holder over-rotation preventing plate 14 for preventing the latch holder 21 from over-rotating is formed on the rear surface of the latch body 10. The door handle 30 is coupled to the bottom of the rear surface of the latch body 10 by a hinge. In detail, a handle hinge through hole 13 is formed at both sides of the lower end of the latch body 10, and the door handle 30 and the latch are formed by a handle hinge 33 penetrating through the handle hinge through hole 13. The lower end of the body 10 is coupled. In addition, the handle spring 32 is mounted at the center portion of the handle hinge 33, and when the user applies force to the handle 30 and removes the handle 30, the handle 30 returns to its original position.

In addition, a door switch 40 is seated on the switch seating portion 12 formed at the lower end of the latch body 10, and a contact terminal 41 protrudes from an upper side of the switch 40. In addition, a pressing portion 31 protruding to a predetermined length is formed on the front portion of the handle, and the pressing portion 31 is in contact with the contact terminal 41. Therefore, when the user raises the door handle 30 to open the door, the pressing part 31 presses the contact terminal 41, and the door opening is detected to stop the washing operation.

In the conventional door lock having the above configuration, as shown in the upper end of the switch 40 is opened so that the pressing portion 31 and the contact terminal 41 in contact.

Therefore, the wash water may flow into the latch body 10 through the latch holder 21, and the flow of wash water may flow down the inner circumferential wall of the latch link 22 or the latch body 10. have. Then, the flowing washing water falls to the upper end of the switch 40, there is a problem that the switch 40 is damaged and does not operate.

In addition, the switch 40 may generate heat, ignite or short-circuit by the washing water.

The present invention has been proposed in order to solve the above problems, and an object of the present invention is to provide a door lock device of a dish washing machine that prevents the washing water flowing through the latch holder side from falling toward the switch.

Door lock device of the dishwasher according to the present invention for achieving the object as described above the door; A latch mounted inside the door to engage with the tub; A latch body including a latch accommodating space formed at a central portion to accommodate the latch and a switch cover formed at least on one side thereof with a predetermined width; And a switch attached to the side of the latch body and protected from the washing water flowing down by the switch cover.

By the above configuration, the washing water flowing through the latch holder does not flow to the contact terminal of the switch, there is an effect that the phenomenon that the switch is damaged or causes an electrical problem does not occur.

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.

3 is a cross-sectional view schematically showing a dish washer provided with a door lock according to the spirit of the present invention.

Referring to FIG. 3, the dish washing machine 100 having a door lock 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 a drying step, the washing operation is completed.

Figure 4 is a perspective view showing a latch that is a component of the door lock according to the spirit of the present invention.

Referring to FIG. 4, the latch 300 according to the present invention includes a latch holder 310 having a latch lock insertion hole 311 into which a latch lock (not shown) provided at an upper side of a tub 110 is inserted, A latch link 320 connected to the lower end of the latch holder 310 is included.

In detail, the latch holder 310 has a predetermined length on both sides and extends in a horizontal direction to form a latch holder hinge 350 inserted into the latch body 200 to be described later. In addition, the lower end portion is formed with a latch holder leg 380 extending to a predetermined length symmetrically on both sides, the upper end portion of the latch link 320 is inserted in the center portion. A variable hinge 370 is coupled to both sides of the lower end of the latch holder leg 380 to be coupled to the latch link 320.

On the other hand, both ends of the latch link 320 is cut to form a flat shape in order to be fitted into the groove formed in the lower end of the latch holder 310, the variable hinge moving groove 321 is formed to penetrate both sides. Accordingly, the variable hinge 370 penetrates the variable hinge moving groove 321, and both ends thereof are inserted into a groove formed at a side surface of the lower end of the latch holder 310. In other words, the latch holder 310 and the latch link 320 are coupled by the variable hinge 370.

In addition, since the variable hinge moving groove 321 is formed long in the vertical direction, when the door is opened and closed, the variable hinge 370 can move up and down along the variable hinge moving groove 321.

In addition, a latch spring 330 having a predetermined elastic force is inserted into an outer circumferential surface of the latch link 320. In addition, a latch link hinge 340 is formed at a lowermost end of the latch link 320 to be orthogonal to the central axis of the latch link 320 to have a predetermined length.

5 is a perspective view showing a latch body that is a component of a door lock according to the spirit of the present invention.

Referring to FIG. 5, the latch body 200 according to the present invention has a space in which the latch 300 is inserted. The door fastening plate 220 includes a fastening groove 221 through which the fastening member for coupling with the inner wall of the door penetrates. In addition, a latch lock insertion hole 210 is formed at a central portion of the door fastening plate 220 and into which a latch lock protruding from the front upper portion of the tub 110 is inserted.

In addition, when the latch 300 is inserted into the latch body 200, a latch holder hinge through hole 290 is formed at a position where the latch holder hinge 350 is seated. In addition, a latch link over-rotation preventing wall 230 is formed at a lower front portion of the latch holder hinge through hole 290 to prevent the latch link 320 from being over-rotated when the door 111 is closed. This includes.

In addition, the latch link hinge insertion boss 240 is formed to extend horizontally on both lower sidewalls of the latch link over-rotation preventing wall 230, and the latch link hinge 340 is inserted therein. In addition, a handle support through hole 280 is formed at a rear side of the latch link hinge insertion boss 240 to hinge the door handle to the latch body 200.

In addition, a switch 400 for detecting a door opening is seated on a lower side of the latch link hinge insertion boss 240, and a switch cover 250 for preventing the washing water from flowing into the switch 400 is included. .

In detail, the switch cover 250 has a front portion and an upper portion attached to the side of the latch body 200, and the switch 400 is mounted on the side of the latch body 2000 where the switch cover 250 is formed. The rear end of the switch cover 250 is provided with a water flow preventing rib 251 extending vertically downward to a predetermined length. This is to prevent the washing water flowing down from the upper side of the latch body 200 does not touch the upper side of the switch 400.

As illustrated, a switch cover having a shape of a shape of “a” covering the front and upper sides of the latch body 200 covers the switch 400. Therefore, even though the washing water flowing through the latch lock insertion hole 210 flows down along the side wall of the latch body 200, the washing water flows down to the front portion along the upper side of the switch cover 250. Or, even if the flow down to the rear portion along the upper surface of the switch cover 250, the washing water does not fall directly to the switch 400 by the water flow prevention rib 251.

In addition, the latch body 200 has at least one projection 260 for supporting the switch 400 is formed in the side portion on which the switch 400 is seated, the edge portion of the switch 400 At least one fixing protrusion 270 is inserted into and protruded from the latch 400 so as to be fixedly seated on the latch body 200.

In detail, the locking jaw 260 supports both sides of the switch 400, and the fixing protrusion 270 functions to support the upper side or the lower side of the switch 400.

On the other hand, the switch 400 is attached to the lower both sides of the latch body 200, the contact terminal 410 is protruded on one side, the contact terminal 410 is attached to the back of the latch body 200 Pressurized by a door handle (not shown). In other words, when the contact terminal 410 is pressed by the handle, the switch serves to stop the power flowing to the dishwasher 100 to stop the cleaning. The reason is that if the washing operation continues to occur even when the door 111 is opened, the washing water is not only scattered to the room but also becomes a very dangerous situation for the user.
The contact terminal 410 may be located between the water flow preventing rib and the locking jaw.

In addition, a fixing protrusion insertion groove 420 for inserting the fixing protrusion 270 is formed in at least one edge of the switch 400, preferably may be formed on each of the corners facing each other diagonally. In addition, a power terminal 430 extending from one side of the switch 400 is further included.

By the switch cover structure as described above is characterized in that the switch is not affected by the washing water introduced into the inside.

By preventing a small amount of washing water flowing into the switch by the door lock device of the dishwasher according to the present invention having the configuration as described above, the switch is damaged or electrical problems such as short circuit or short circuit There is an effect that does not occur.

Claims (7)

door; A latch mounted inside the door to engage with the tub; A latch accommodating space formed in a central portion for accommodating the latch; A latch body including a switch cover formed on at least one side and having a predetermined width; A switch attached to a side of the latch body and having a contact terminal at a rear surface thereof; And In order to support the switch, a latching protrusion protruding from a side of the latch body to a predetermined height and supporting a rear surface of the switch is included. The switch cover is formed to be bent toward the contact terminal side, and a water flow prevention rib for preventing water from flowing to the contact terminal side, The contact terminal is a door lock device of the dishwasher is located between the locking step and the water flow prevention rib. The method of claim 1, The switch cover is a door lock device of the dishwasher, characterized in that the "a" shaped to wrap around the upper portion and the front of the switch. delete delete The method of claim 1, In order to support the upper and / or lower portion of the switch, at least one fixing protrusion protruding to a predetermined length from the side of the latch body is formed, The switch is a door lock device of the dishwasher, characterized in that the fixing projection insertion groove is formed so that the fixing projection is inserted. The method of claim 5, Fixing protrusion insertion groove formed in the switch is a door lock device of the dishwasher, characterized in that formed on the sides of the diagonal facing each other. The method of claim 1, The latch body includes a door handle on the back, The contact terminal is a door lock device of the dishwasher pressed by the door handle.

Images