KR102324207B1 - Dish washing machine - Google Patents

Abstract

A driving device for driving a vane of a dishwasher according to an embodiment of the present invention includes a motor generating a driving force, a belt connected to a driving pulley and an idle pulley to transmit the driving force of the motor to the vane vane and rotating, and movement of the vane a rail for guiding the wheel, a rear holder that rotatably supports the drive pulley and is coupled to one end of the rail by the tension of the belt, and rotatably supports the idle pulley and is coupled to the other end of the rail by the tension of the belt It is easy to assemble and disassemble, including the front holder.

Description

Dishwasher {DISH WASHING MACHINE}

The present invention relates to a dishwasher having a spray nozzle fixed to one side of a washing tub and a vane movably provided inside the washing tub and reflecting washing water sprayed from the spray nozzle toward the dishes.

A dishwasher includes a main body having a washing tub therein, a basket for accommodating dishes, a sump for storing washing water, a spray nozzle for spraying the washing water, and a pump for supplying the washing water from the sump to the spray nozzle, It is a home appliance that washes dishes by spraying high-pressure washing water.

In general, a rotor-type spray structure having a rotating spray nozzle is employed in a dishwasher. The rotating nozzle sprays washing water while rotating by water pressure. Since these rotating nozzles spray the washing water only within the radius of rotation, an area where the washing water is not jetted may occur. Accordingly, a so-called linear type spray structure has been proposed so that an area to which the washing water is not sprayed is not generated.

The linear type spray structure includes a fixed nozzle fixed to one side of the washing tank and a vane that reflects the washing water sprayed from the gozzle spray nozzle toward the dishes while moving inside the washing tank. Washing water can be sprayed.

The fixed nozzle has a plurality of spray holes arranged in the left and right directions of the washing tank and is fixed to the rear wall side of the washing tank, and the vane extends in the left and right direction of the washing tank to reflect the washing water sprayed from the plurality of spray holes, and is front and rear of the washing tank It may be provided to linearly reciprocate in the direction.

The linear type injection structure further includes a driving device capable of driving the vanes. The driving device may be implemented in various ways, but for example, it includes a motor, a belt connected to the motor to transmit driving force to the vanes, and a rail for guiding the movement of the vanes, and when the motor is driven, the belt rotates and the vanes It may be arranged to move on this rail.

In the distribution device for distributing the washing water stored in the sump to the spray nozzles, a distribution device having a different structure may be preferred for the linear-type spraying structure compared to the rotor-type spraying structure.

When the spray nozzle disposed at the lower part of the washing tank is a rotary nozzle, providing the outlet of the distribution device to face upward shortens the length of the flow path connecting the outlet of the distribution device and the rotary nozzle and minimizes the pressure loss of the washing water. It is preferable because it can

However, when the spray nozzle disposed at the lower part of the washing tank is a fixed nozzle, since the fixed nozzle is disposed adjacent to the rear wall of the washing tank, the outlet of the distribution device does not need to be provided to face the upper side, but rather face the upper side. When provided to see, the flow path connecting the outlet of the distribution device and the fixed nozzle must be bent to the rear side immediately after starting from the outlet of the distribution device, so that the pressure loss of the washing water may increase.

On the other hand, since the spray nozzles are fixed in the linear type spraying structure, by distributing the washing water to only some of the spray nozzles among all the spray nozzles, it is possible to perform divided washing in which the washing water is sprayed only on a part of the washing tank.

One aspect of the present invention discloses a dishwasher having a vane driving device that can be easily assembled and disassembled, cost is reduced, and has reliability in a dishwasher having a linear spray structure.

According to an aspect of the present invention, a dishwasher includes a main body; a washing tub provided inside the main body; a fixed nozzle fixed to one side of the washing tub to spray washing water; a vane that reflects the washing water sprayed from the nozzle toward the dishes; and a driving device for driving the vanes, wherein the driving device includes a motor for generating a driving force; and a belt connected to a driving pulley and an idle pulley to rotate so as to transmit the driving force of the motor to the vanes; and a rail guiding movement of the vane; and a rear holder rotatably supporting the drive pulley and coupled to one end of the rail by tension of the belt; and a front holder that rotatably supports the idle pulley and is coupled to the other end of the rail by tension of the belt.

Here, the rail may have a tubular shape having an inner space and a lower opening formed in the lower portion.

Here, the belt may be disposed in the inner space of the rail.

In addition, the driving device may further include a belt holder coupled to the teeth of the belt to move in the inner space of the rail together with the belt.

Here, the driving device may further include a vane holder that is provided to surround the outer surface of the rail, is coupled to the belt holder through the lower opening of the rail, moves together with the belt holder, and to which the vane is coupled. have.

The front holder may include a front top holder, a front bottom holder, and a pulley bracket provided between the front top holder and the front bottom holder to rotatably support the idle pulley.

Here, the front holder may further include an elastic member for elastically supporting the pulley bracket to maintain the tension of the belt.

Here, one end of the elastic member may be supported by the front top holder or the front bottom holder, and the other end may be supported by the pulley bracket.

In addition, the pulley bracket may be provided to be movable with respect to the front top holder and the front bottom holder.

In addition, the elastic member may be a compression spring.

In addition, the belt may be formed of a resin material.

In addition, the drive shaft of the motor may be coupled to the drive pulley through the bottom plate of the washing tank.

According to another aspect of the present invention, a dishwasher includes a main body; a washing tub provided inside the main body; a sump storing washing water; and a bottom plate cover coupled to one side of a bottom plate of the washing tub; a nozzle assembly having at least one spray nozzle receiving the washing water supplied from the sump and spraying it, the nozzle assembly coupled to the bottom plate cover; lethal vane; and a rail assembly coupled to the bottom plate cover to guide the movement of the vane.

Here, the bottom plate cover includes a fastening hole for fastening the nozzle assembly and the rail assembly.

In addition, a motor for driving the vane may be coupled to the bottom surface of the bottom plate cover.

Here, the bottom plate cover may include a shaft through hole through which the drive shaft of the motor passes.

Here, the dishwasher may further include a sealing member provided in the shaft passage hole to seal the shaft passage hole.

Also, the bottom plate of the washing tank may include a motor passage hole through which the motor passes, and a passage passage through which a passage connecting the sump and the nozzle assembly passes.

Here, the dishwasher may further include a sealing member provided between the bottom plate cover and the bottom plate of the washing tub to seal the motor passage hole and the flow passage hole.

In addition, the bottom plate cover may include a hose connection part inserted into the passage hole and connected to a hose for supplying washing water from the sump.

According to the spirit of the present invention, there is provided a method of manufacturing a dishwasher having a main body, a washing tub, and a sump for storing washing water, by assembling a nozzle assembly having at least one fixed nozzle that receives washing water supplied from the sump and sprays washing water, Assembling a rail assembly guiding the movement of a vane that moves inside the washing tub and reflects the washing water sprayed from the at least one fixed nozzle toward the dishes, prepares a bottom plate cover, the nozzle assembly, the rail assembly and , assembling the bottom plate cover assembly by coupling the bottom plate cover, and coupling the bottom plate cover assembly to one side of the bottom plate of the washing tank.

Here, the method of manufacturing the dish washing machine may include coupling a motor for driving the vane to a lower surface of the bottom plate cover.

Also, the method of manufacturing the dish washing machine may include coupling a sealing member to the drive shaft of the motor to seal the shaft passage hole formed in the bottom plate cover.

The method of manufacturing the dishwasher may include coupling a sealing member between the bottom plate cover and the bottom plate of the washing tub to seal the motor passage hole and the flow passage hole formed in the bottom plate of the washing tub. have.

In addition, assembling the rail assembly includes connecting a belt to a driving pulley, coupling a rear holder rotatably supporting the driving pulley to one end of the rail, connecting the belt to the idle pulley, and It may include coupling a front holder that rotatably supports to the other end of the rail by tension of the belt.

According to another aspect of the present invention, a dishwasher includes a main body; a washing tub provided inside the main body; and a fixed nozzle fixed to one side of the washing tub and spraying washing water; and the interior of the washing tub. a vane that moves and reflects the washing water sprayed from the fixed nozzle toward the dishes; and a driving device for driving the vanes. Including, wherein the driving device comprises: a motor for generating a driving force; a rail for guiding the movement of the vane; and a driving pulley provided on one side of the rail and connected to a driving shaft of the motor; and an idle pulley provided on the other side; and a belt having a belt body having a belt portion and teeth, and a core wire embedded in the belt body, and transmitting the driving force of the motor to the vanes. includes

The belt body may be formed of a polyurethane (polyurethane) material, and the core wire may include an aramid fiber.

The rail may have a tubular shape having an inner space and a lower opening formed thereunder.

The belt may be disposed in the inner space of the rail.

The driving device may further include a belt holder coupled to the teeth of the belt and moving in the inner space of the rail together with the belt.

The driving device may further include a vane holder provided to surround the outer surface of the rail, coupled to the belt holder through the lower opening of the rail to move together with the belt holder, and to which the vane is coupled.

According to another aspect of the present invention, a dishwasher includes a main body; a washing tub provided inside the main body; and a fixed nozzle fixed to one side of the washing tub and spraying washing water; and the interior of the washing tub. a vane that moves and reflects the washing water sprayed from the fixed nozzle toward the dishes; and a driving device for driving the vanes. Including, wherein the driving device includes a motor for generating a driving force; a rail for guiding the movement of the vane; a belt body having a belt portion and teeth; and a core wire embedded in the belt body. ) and a belt for transmitting the driving force of the motor to the vane; and a tension adjusting device for adjusting the tension of the belt. includes

The tension control device may include an elastic member coupled to a rotation shaft of the idle pulley to press the idle pulley in a direction for applying a tension to the belt.

The tension adjusting device may include a position adjusting device for moving the idle pulley in a longitudinal direction of the rail.

The position adjusting device may include a slide member to which a rotation shaft of the idle pulley is coupled and movably provided in a longitudinal direction of the rail.

The position adjusting device may include an adjusting member for pressing the slide member to move the slide member.

The adjusting member may include a screw.

The tension adjusting device may include a pressing device for adjusting the tension of the belt by pressing the opposite surface of the toothed portion of the belt.

The pressing device may include a pressing member contacting the opposite side of the toothed portion of the belt.

The pressing device may include a slide member to which the pressing member is coupled and movably provided in a direction perpendicular to the belt.

The pressing device may include an adjustment member for pressing the slide member to move the slide member.

The adjusting member may include a screw.

According to the spirit of the present invention, a dishwasher having a linear spray structure has a vane driving device that can be easily assembled and disassembled, reduces costs, and has reliability.

The belt of the driving device includes a belt body made of polyurethane and a core wire made of aramid fiber embedded in the inside of the belt body, and has excellent durability as well as water resistance and chemical resistance. Reliability can be maintained even when exposed to moisture inside.

The driving device is provided with a tension adjusting device for maintaining the tension of the belt, so that reliability can be maintained even for long-term use.

1 is a schematic cross-sectional view illustrating a dishwasher according to an embodiment of the present invention;
FIG. 2 is a view illustrating a lower portion of the dishwasher of FIG. 1 ;
3 is a view illustrating a flow path structure of the dish washing machine of FIG. 1;
FIG. 4 is an exploded view illustrating the fixed nozzle assembly of the dishwasher of FIG. 1 ;
FIG. 5 is a cross-sectional view illustrating a fixed nozzle assembly of the dishwasher of FIG. 1 ;
FIG. 6 is a view illustrating a dispensing device of the dish washing machine of FIG. 1;
FIG. 7 is an exploded view illustrating the configuration of the distribution device of the dish washing machine of FIG. 1 ;
FIG. 8 is an exploded view illustrating the configuration of an opening/closing member of the distribution device of the dish washing machine of FIG. 1;
9 is a cross-sectional view illustrating a dispensing device of the dish washing machine of FIG. 1;
FIG. 10 is an enlarged view of part A of FIG. 9;
11 is a side view (a motor omitted) of the dispensing device of the dishwasher of FIG. 1 ;
FIG. 12 is an enlarged view of a cam member of the dispensing device of the dish washing machine of FIG. 1;
13 is a diagram illustrating a relationship between on and off times of a micro switch of the distribution device of the dish washing machine of FIG. 1 and a rotational position of an opening/closing member;
FIG. 14 is a view illustrating an operation of the dispensing apparatus of the dish washing machine of FIG. 1 , illustrating an operation in which only the second outlet is opened and washing water is distributed only to the rotating nozzles;
FIG. 15 is a view illustrating an operation of the dispensing device of the dish washing machine of FIG. 1 , illustrating an operation in which only the third outlet is opened and washing water is distributed only to the right fixed nozzles;
FIG. 16 is a view illustrating an operation of the distribution device of the dish washing machine of FIG. 1 , in which only the first outlet and the third outlet are opened, and the washing water is distributed only to the left fixed nozzle and the right fixed nozzle;
17 is a view illustrating an operation of the dispensing apparatus of the dish washing machine of FIG. 1 , in which only the first outlet is opened and washing water is distributed only to the left fixed nozzles;
18 is an exploded view illustrating a bottom plate, a bottom plate cover, and a motor of the washing tub of the dish washing machine of FIG. 1;
19 is a cross-sectional view of a bottom plate, a bottom plate cover, and a motor of the dishwasher of FIG. 1 ;
FIG. 20 is an exploded view illustrating a vane, a rail assembly, a spray nozzle assembly, and a bottom plate cover of the dishwasher of FIG. 1;
FIG. 21 is a view illustrating a vane and a driving device of the dish washing machine of FIG. 1, in which the configuration of the driving device is disassembled; FIG.
22 is a view illustrating a belt and a belt holder of the dishwasher of FIG. 1;
23 is a cross-sectional view illustrating a rail, a belt, a belt holder, and a vane holder of the dishwasher of FIG. 1;
24 is a view illustrating a rail, a belt, a driving pulley, and a rear holder of the dish washing machine of FIG. 1;
25 is a cross-sectional view illustrating a rail, a belt, a driving pulley, and a rear holder of the dishwasher of FIG. 1 ;
26 is a view illustrating a rail, a belt, an idle pulley, and a front holder of the dishwasher of FIG. 1;
27 is a cross-sectional view illustrating a rail, a belt, an idle pulley, and a front holder of the dishwasher of FIG. 1;
28 is a view illustrating a vane and a vane holder of the dish washing machine of FIG. 1;
29 is a perspective view illustrating a vane of the dish washing machine of FIG. 1;
30 is an enlarged view of a vane and a part of a vane holder of the dish washing machine of FIG. 1;
31 to 33 are views illustrating a rotating operation of the vane of the dish washing machine of FIG. 1;
34 is a view illustrating an operation in which the vane reflects washing water in the vane movement section of the dishwasher of FIG. 1;
35 is a view illustrating an operation in which a vane reflects washing water in a non-moving section of the vane of the dishwasher of FIG. 1;
36 is a view illustrating a sump, a coarse filter, and a fine filter of the dishwasher of FIG. 1 ;
37 is an exploded view illustrating a sump, a coarse filter, a fine filter, and a micro filter of the dishwasher of FIG. 1;
Fig. 38 is a cross-sectional view taken along line I-I of Fig. 36;
Fig. 39 is an enlarged view of part B of Fig. 38;
Fig. 40 is a cross-sectional view taken along line II-II of Fig. 38;
FIG. 41 is an enlarged view of part C of FIG. 40; FIG.
42 is a plan view illustrating the sump and coarse filter of the dish washing machine of FIG. 1 , illustrating a locking operation of the coarse filter;
43 is a side view illustrating a coarse filter of the dishwasher of FIG. 1;
FIG. 44 is a view illustrating a sump and a coarse filter of the dish washing machine of FIG. 1 , illustrating a locking operation of the coarse filter;
45 is a cross-sectional view illustrating a sump, a coarse filter, and a micro filter of the dishwasher of FIG. 1;
46 is an enlarged plan view of a coarse filter and a micro filter of the dish washing machine of FIG. 1;
47 is a plan view illustrating a lower portion of the washing tub of the dish washing machine of FIG. 1 ;
48 is a view showing a detailed structure of a belt of the dishwasher of FIG. 1;
Fig. 49 is an exploded view showing the configuration of the driving device according to the second embodiment of the present invention;
50 is a cross-sectional view showing a rail, a belt, an idle pulley, a front holder, and a tension maintaining device of the driving device according to the third embodiment of the present invention.
51 is a cross-sectional view showing a rail, a belt, an idle pulley, a front holder, and a tension maintaining device of the driving device according to the fourth embodiment of the present invention.
52 is a plan view showing a belt, an idle pulley, a front holder, and a tension maintaining device of a driving device according to a fifth embodiment of the present invention;
Fig. 53 is a cross-sectional view showing a detailed structure of the tension maintaining device of Fig. 52;

Hereinafter, preferred embodiments according to the present invention will be described in detail.

1 is a schematic cross-sectional view illustrating a dishwasher according to an embodiment of the present invention. FIG. 2 is a view illustrating a lower portion of the dishwasher of FIG. 1 .

An overall structure of a dishwasher according to an embodiment of the present invention will be generally described with reference to FIGS. 1 to 2 .

The dishwasher 1 includes a main body 10 forming an exterior, a washing tub 30 provided inside the main body 10, and baskets 12a and 12b provided inside the washing tub 30 to accommodate dishes. ), the spray nozzles 311, 313, 330, 340 for spraying the washing water, the sump 100 for storing the washing water, and a circulation pump 51 for pumping the washing water of the sump 100 and supplying it to the spray nozzles 311, 313, 330, 340; A drain pump 52 for discharging the washing water of the sump 100 to the outside of the main body 10 together with dirt, a vane 400 moving the inside of the washing tub 30 to reflect the washing water toward the dishes, and a vane 400 ) and a driving device 420 for driving the .

The washing tub 30 may have a substantially box shape with an open front so that dishes can be put in and out. The front opening of the washing tank 30 may be opened and closed by the door 11 . The washing tank 30 may have an upper wall 31 , a rear wall 32 , a left wall 33 , a right wall 34 , and a bottom plate 35 .

The baskets 12a and 12b may be wire racks made of a wire so that the washing water can pass through without accumulating. The baskets 12a and 12b may be detachably provided inside the washing tank. The baskets 12a and 12b may include an upper basket 12a disposed above the washing tub 30 and a lower basket 12b disposed under the washing tub 30 .

The spray nozzles 311 , 313 , 330 , and 340 spray washing water at high pressure to wash dishes. The spray nozzles 311 , 313 , 330 , and 340 are an upper rotating nozzle 311 provided at the upper portion of the washing tub 30 , an intermediate rotating nozzle 313 provided at the center of the washing tub 30 , and a lower portion of the washing tub 30 . It may include fixed nozzles 330 and 340 .

The upper rotating nozzle 311 may be provided on the upper side of the upper basket 12a, and may spray washing water downward while rotating by water pressure. For this purpose, spray holes 312 may be provided at the lower end of the upper rotary nozzle 311 . The upper rotating nozzle 311 may directly spray the washing water toward the dishes stored in the upper basket 12a.

The intermediate rotation nozzle 313 is provided between the upper basket 12a and the lower basket 12b, and may spray washing water in the vertical direction while rotating by water pressure. For this purpose, spray holes 314 may be provided at the upper end and lower end of the intermediate rotation nozzle 313 . The intermediate rotation nozzle 313 may directly spray the washing water toward the dishes stored in the upper basket 12a and the lower basket 12b.

The fixed nozzles 330 and 340 are provided not to move, unlike the rotating nozzles 311 and 313 , and are fixed to one side of the washing tank 30 . The fixed nozzles 330 and 340 are disposed substantially adjacent to the rear wall 32 of the washing tub 30 , and may spray washing water toward the front of the washing tub 30 . Accordingly, the washing water sprayed from the fixed nozzles 330 and 340 may not be directed toward the dishes.

Washing water sprayed from the fixed nozzles 330 and 340 may be reflected toward the dishes by the vanes 400 . The fixed nozzles 330 and 340 are disposed under the lower basket 12b, and the vane 400 may reflect the washing water sprayed from the fixed nozzles 330 and 340 upward. That is, the washing water sprayed from the fixed nozzles 330 and 340 may be reflected toward the dishes accommodated in the lower basket 12b by the vane 400 .

The fixed nozzles 330 and 340 may have a plurality of injection holes 331 and 341 arranged in the left and right directions of the washing tub 30 , respectively. The plurality of spray holes 331 and 341 may spray the washing water toward the front.

The vane 400 may extend long in the left and right directions of the washing tub 30 to reflect all of the washing water sprayed from the plurality of jetting holes 331 and 341 of the fixed nozzles 330 and 340 . That is, one longitudinal end of the vane 400 is adjacent to the left wall 33 of the washing tub 30 , and the other longitudinal end of the vane 400 is provided adjacent to the right wall 34 of the washing tub 30 . can

These vanes 400 may linearly reciprocate along the spraying direction of the washing water sprayed from the fixed nozzles 330 and 340 . That is, the vane 400 may linearly reciprocate along the front-rear direction of the washing tub 30 .

Accordingly, the linear spray structure including the fixed nozzles 330 and 340 and the vanes 400 can clean the entire area of the washing tub 30 without blind spots. In the case of rotating nozzles, it is different from that washing water can be sprayed only within the range of the rotating radius.

The fixed nozzles 330 and 340 may include a left fixed nozzle 330 disposed on the left side of the washing tub 30 and a right fixed nozzle 340 disposed on the right side of the washing tub 30 .

As will be described later, the rotating nozzles 311 and 313 and the fixed nozzles 330 and 340 may spray washing water independently of each other. Furthermore, the left fixed nozzle 330 and the right fixed nozzle 340 may also spray the washing water independently of each other.

The washing water sprayed from the left fixed nozzle 330 is reflected only to the left region of the washing tub 30 by the vane 400 , and the washing water sprayed from the right fixed nozzle 340 is the washing tub 30 by the vane 400 . It can be reflected only in the right area of .

Accordingly, the dishwasher may separately wash the left and right sides of the washing tub 30 independently. Of course, unlike the present embodiment, the division is not necessarily divided only into the left and right sides, but may be further subdivided as needed.

The main components of the dishwasher according to an embodiment of the present invention will be described in detail below in turn.

3 is a diagram illustrating a flow path structure of the dishwasher of FIG. 1 . FIG. 4 is an exploded view illustrating the fixed nozzle assembly of the dishwasher of FIG. 1 . FIG. 5 is a cross-sectional view illustrating the fixed nozzle assembly of the dishwasher of FIG. 1 .

A stroke, a flow path structure, a structure of a fixed nozzle assembly, and a washing water distribution structure of the dishwasher according to an embodiment of the present invention will be described with reference to FIGS. 3 to 5 .

The dishwasher may have a water supply stroke, a washing stroke, a drain stroke, and a drying stroke.

In the water supply cycle, washing water may be supplied into the washing tank 30 through a water supply pipe (not shown). The washing water supplied to the washing tub 30 may flow to the sump 100 provided under the washing tub 30 by the gradient of the bottom plate 35 of the washing tub 30 , and may be stored in the sump 100 .

In the washing stroke, the circulation pump 51 may be activated to pump the washing water in the sump 100 . The washing water pumped by the circulation pump 51 may be distributed to the rotating nozzles 311 and 313 , the left fixed nozzle 330 , and the right fixed nozzle 340 through the distribution device 200 . Washing water is sprayed at high pressure from the spray nozzles 311 , 313 , 330 , and 340 by the pumping force of the circulation pump 51 to wash dishes.

Here, the upper rotating nozzle 311 and the intermediate rotating nozzle 313 may receive washing water from the distribution device 200 through the second hose 271b. The left fixed nozzle 330 may receive washing water from the distribution device 200 through the first hose 271a. The right fixed nozzle 340 may receive washing water from the distribution device 200 through the third hose 271c.

In this embodiment, the distribution device 200 is provided to have a total of four distribution modes.

In the first mode, the distribution device 200 supplies the washing water only to the rotary nozzles 311 and 313 through the second hose 271b.

In the second mode, the distribution device 200 supplies the washing water only to the right fixed nozzle 340 through the third hose 271c.

In the third mode, the distribution device 200 supplies the washing water only to the left fixed nozzle 330 and the right fixed nozzle 340 through the first hose 271a and the third hose 271c.

In the fourth mode, the distribution device 200 supplies the washing water only to the left fixed nozzle 330 through the first hose 271a.

However, it goes without saying that the distribution device 200 may be provided to have more various distribution modes, unlike the present embodiment.

The washing water sprayed from the spray nozzles 311 , 313 , 330 , and 340 strikes the dishes to remove dirt on the dishes, and falls together with the dirt to be stored in the sump 100 again. The circulation pump 51 pumps the washing water stored in the sump 100 again and circulates it. During the washing cycle, the circulation pump 51 may be repeatedly started and stopped several times. In this process, the dirt that has fallen into the sump 100 along with the washing water is collected by the filter mounted on the sump 100 and remains in the sump 100 without being circulated to the spray nozzles 311 , 313 , 330 , and 340 .

In the draining stroke, the drain pump 52 may operate to drain the dirt and washing water remaining in the sump 100 to the outside of the main body 10 together.

In the drying cycle, a heater (not shown) mounted on the washing tub 30 may be operated to dry dishes.

The structures of the left fixed nozzle 330 and the right fixed nozzle 340 will be described in detail.

The left fixed nozzle 330 includes injection holes 331 for spraying washing water, a nozzle flow path 332 for supplying washing water to the injection holes 331, and a nozzle inlet through which washing water flows into the nozzle flow path 332 ( 333), a nozzle body 334 forming an exterior, a nozzle cover 335 coupled to the rear of the nozzle body 334 to form a nozzle flow path 332, and a nozzle body 334 coupled to the front The decorative member 336 and the coupling hole 337 formed in the nozzle body 334 to couple the left fixing nozzle 330 to the bottom plate cover 600 ( FIG. 19 ) to be described later may be included.

The right fixed nozzle 340 includes injection holes 341 for spraying washing water, a nozzle passage 342 for supplying washing water to the injection holes 3410 , and a nozzle inlet 343 through which washing water flows into the nozzle passage 342 . ), a nozzle body 344 forming an exterior, and a nozzle cover 345 coupled to the rear of the nozzle body 344 to form a nozzle flow path 342, and a decoration coupled to the front of the nozzle body 344 It may include a member 346 and a coupling hole 347 formed in the nozzle body 344 to couple the right fixing nozzle 340 to the bottom plate cover 600 to be described later.

Here, the nozzle body 334 of the left fixed nozzle 330 and the nozzle body 344 of the right fixed nozzle 340 may be integrally formed. Accordingly, the left fixed nozzle 330 and the right fixed nozzle 340 may be integrated.

As described above, since the left fixed nozzle 330 and the right fixed nozzle 340 are provided integrally, it may be easy to horizontally align the left fixed nozzle 330 and the right fixed nozzle 340 , and the left fixed nozzle 340 may be horizontally aligned. It may be easy to couple the nozzle 330 and the right fixed nozzle 340 to the bottom plate cover 600 .

The fixed nozzle assembly 320 includes a left fixed nozzle 330 and a right fixed nozzle 340 . The nozzle assembly 300 includes a fixed nozzle assembly 320 , an upper rotating nozzle 311 , and an intermediate rotating nozzle 313 .

FIG. 6 is a view illustrating a dispensing device of the dish washing machine of FIG. 1 . FIG. 7 is an exploded view illustrating the configuration of the distribution device of the dishwasher of FIG. 1 . FIG. 8 is an exploded view illustrating the configuration of an opening/closing member of the distribution device of the dish washing machine of FIG. 1 . 9 is a cross-sectional view illustrating the dispensing device of the dishwasher of FIG. 1 . FIG. 10 is an enlarged view of part A of FIG. 9 .

A dispensing apparatus for a dishwasher according to an embodiment of the present invention will be described with reference to FIGS. 6 to 10 .

The dispensing device 200 is provided to have a substantially cylindrical shape.

The distribution device 200 includes a housing 210 having a substantially hollow cylindrical shape and forming an exterior, an opening/closing member 220 rotatably provided inside the housing 210, and rotating the opening/closing member 220 . The motor 230, the support member 260 for supporting the motor 230 and the housing 210, and a cam member coupled to the motor 230 and the opening and closing member 200 to rotate together with the opening and closing member 200 ( 240 , and a micro switch 250 contacting the cam member 240 to sense the rotational position of the opening/closing member 200 .

The housing 210 may be elongated in the direction of both sidewalls 33 and 34 ( FIG. 2 ) of the washing tub 30 . Hereinafter, the longitudinal direction of the housing 210 is referred to as an axial direction. An inlet 211 through which washing water flows into the housing 210 is formed at one end of the housing 210 in the axial direction. A motor 230 is disposed at the other end of the housing 210 in the axial direction.

Specifically, the inlet 211 may be provided to face the right wall 34 of the washing tub 30 . A circulation pump 51 is connected to the inlet 211 , and when the circulation pump 51 operates, the washing water stored in the sump 100 may be introduced into the housing 210 through the inlet 211 .

A plurality of outlets 212a, 212b, and 212c are formed on the circumferential surface of the housing 210 . The plurality of outlets 212a, 212b, and 212c are arranged at regular intervals along the axial direction. The plurality of outlets 212a, 212b, and 212c include a first outlet 212a, a second outlet 212b, and a third outlet 212c.

Here, the plurality of outlets 212a , 212b , and 212c are provided to face the rear wall 32 ( FIG. 2 ) of the washing tub 30 . As such, the reason why the plurality of outlets 212a, 212b, and 212c may be provided to face the rear wall 32 of the washing tub 30 is the housing ( 210 has a cylindrical shape, the housing 210 is disposed long in the direction of both side walls 33 and 34 , and the opening/closing member 220 rotates about the axial direction of the housing 210 while the outlets 212a and 212b , 212c) because it has a structure that opens and closes.

In other words, a distribution device generally used in a conventional dishwasher has a hemispherical housing and a flat disk type opening and closing device rotatably provided on the upper portion of the housing, so that the outlets can be configured on the upper portion of the distribution device. It is the only structure

As described above, in the distribution apparatus 200 according to an embodiment of the present invention, the outlets 212a, 212b, and 212c are provided to face the rear wall 32 of the washing tub 30, so that in the distribution apparatus 200 It has an advantage that the pressure loss of the washing water supplied to the fixed nozzles 330 and 340 disposed adjacent to the rear wall 32 of the washing tank 30 is reduced.

This is because the flow path connecting the outlets 212a, 212b, and 212c and the fixed nozzles 330 and 340 can be gently formed without a sharp bend.

Conversely, if the conventional distribution device in which the outlets face the upper side of the distribution device is applied to the fixed nozzles 330 and 340 according to an embodiment of the present invention, the flow path connected to the outlets should be rapidly bent to the rear side immediately after starting. Therefore, the pressure loss is large.

The first outlet 212a, the second outlet 212b, and the third outlet 212c are sequentially arranged from the left to the right of the washing tank 30 .

That is, the first outlet 212a is relatively close to the left fixed nozzle 330 , the third outlet 212c is relatively close to the right fixed nozzle 340 , and the second outlet 212b is located in the middle. are placed

The first outlet 212a may be connected to the left fixed nozzle 330 through a first hose 271a (FIG. 3). The second outlet 212b may be connected to the rotary nozzles 311 and 313 through a second hose 271b (FIG. 3). The third outlet 212c may be connected to the right fixed nozzle 340 through a third hose 271c (FIG. 3).

In this way, since each of the outlets 212a, 212b, and 212c is connected to the spray nozzles 311, 313, 330, and 340 relatively close to them, the length of the hoses 271a, 271b, and 271c is shortened, no agglomeration occurs, and pressure loss of the washing water. This can be reduced.

The housing 210 is provided with a sump coupling part 223 for coupling to the sump 100 , and the sump 100 is provided with a distribution device coupling part 109 ( FIG. 3 ) coupled to the sump coupling part 223 . can In this embodiment, the sump coupling part 223 is provided in a groove shape, and the distribution device coupling part 109 is provided in a protrusion shape. As the sump coupling part 223 and the dispensing device coupling part 109 are coupled, the positions of the dispensing device 200 and the sump 100 may be aligned.

The opening/closing member 220 selectively opens and closes the outlets 212a, 212b, and 212c while rotating about the axial direction of the housing 210 inside the housing 210 . Accordingly, the opening/closing member 220 serves to substantially distribute the washing water to the spray nozzles 311 , 313 , 330 , and 340 .

The opening/closing member 220 has a substantially hollow cylindrical shape. The opening/closing member 220 includes a rotating body 221 rotating inside the housing 210 and sealing members 225 coupled to the rotating body 221 to close the outlets 212a, 212b, and 212c. do.

Communication holes 222 may be formed on a circumferential surface of the rotating body 221 . When the communication holes 222 are positioned to correspond to the outlets 212a, 212b, and 212c, the washing water may smoothly flow out to the outlets 212a, 212b, and 212c.

In addition, when the opening and closing member 220 rotates inside the housing 210 on the circumferential surface of the rotating body 221 , friction with the housing 210 is minimized so that the opening and closing member 220 can rotate smoothly. Spaced protrusions 224 may be formed to space the inner circumferential surface of the housing 210 and the outer circumferential surface of the rotating body 222 apart by a predetermined distance. The inner circumferential surface of the housing 210 and the outer circumferential surface of the rotating body 222 may always be maintained to have a predetermined distance by the spacing protrusions 224 .

In addition, locking holes 223 to which the sealing members 225 are coupled may be formed on the circumferential surface of the rotating body 221 . The locking protrusions 227 of the sealing members 225 are coupled to the locking holes 223 . The locking holes 223 may have different shapes to correspond to the shape of the locking protrusions 227 of the sealing members 225 .

For example, the central locking hole 223 may have a substantially cross shape, and the locking holes 223 on both sides may be provided to have a straight shape. Similarly, the locking protrusion 227 of the central sealing member 225 may have a cross shape, and the locking protrusions 227 on both sides may be provided to have a straight shape.

The reason why the shapes are provided differently in this way is to easily identify when the sealing member 225 coupled to the center and the sealing members 225 coupled to both sides have different shapes during assembly.

One end corresponding to the inlet 211 of the housing 220 among both ends of the rotating body 221 in the axial direction is opened. A camshaft coupling part 229 to which the camshaft 241 of the cam member 240 is coupled is provided at the other end of the rotational body 221 in the axial direction.

The sealing members 225 are coupled to the circumferential surface of the rotating body 221 to close the outlets 212a, 212b, and 212c. The sealing members 225 are coupled to the locking holes 223 of the rotating body 221 . The sealing members 225 are coupled to the locking holes 223 of the rotating body 221 movably in a radial direction. This is to strengthen the sealing of the outlets (212a, 212b, 212c) by the sealing members 225 close to the outlets (212a, 212b, 212c).

That is, the sealing members 225 move between an open position in close contact with the rotating body 221 and a closed position in close contact with the outlets 212a, 212b, and 212c. When the washing water flows into the housing 210 , the sealing members 225 may naturally move from the open position to the closed position by the water pressure of the washing water. Accordingly, the sealing force of the outlets 212a, 212b, and 212c is improved, and the reliability of the distribution device 200 may be improved.

The sealing member 225 includes a sealing part 226 ( FIG. 8 ) having a curved shape to be in close contact with the outlets 212a , 212b and 212c , and a sealing part 226 to be inserted into the locking hole 223 of the rotating body 221 . ) and a locking protrusion 227 protruding from it.

The locking protrusion 227 and the locking hole 223 are provided to have some clearance so that the sealing member 225 is movable in the radial direction. Instead, a stopper portion 228 having a larger diameter than the locking hole 223 may be formed at the end of the locking protrusion 227 to prevent the sealing member 225 from being completely separated from the locking hole 223 .

The sealing member 225 may be integrally formed of a resin material. The sealing member 225 can be easily assembled to the rotating body 221 by strongly pressing the locking protrusion 227 to insert it into the locking hole 223, and after assembly, the stuffer part 228 is inserted into the locking hole ( 223) and does not separate from the rotating body 221 unless a manual force is applied.

11 is a side view illustrating the dispensing device of the dishwasher of FIG. 1 (a motor is omitted). FIG. 12 is an enlarged view of a cam member of the dispensing device of the dish washing machine of FIG. 1 . 13 is a diagram illustrating a relationship between on and off times of the micro switch of the distribution device of the dish washing machine of FIG. 1 and the rotational position of the opening/closing member. FIG. 14 is a diagram illustrating an operation of the dispensing apparatus of the dish washing machine of FIG. 1 , in which only the second outlet is opened and washing water is distributed only to the rotating nozzles. FIG. 15 is a diagram illustrating an operation of the dispensing apparatus of the dish washing machine of FIG. 1 , in which only the third outlet is opened and washing water is distributed only to the right fixed nozzles. 16 is a view illustrating an operation of the distribution device of the dish washing machine of FIG. 1 , in which only the first outlet and the third outlet are opened, and the washing water is distributed only to the left fixed nozzle and the right fixed nozzle. 17 is a view illustrating an operation of the dispensing apparatus of the dish washing machine of FIG. 1 , in which only the first outlet is opened and washing water is distributed only to the left fixed nozzles.

11 to 17, the operation of the distribution device according to an embodiment of the present invention will be described.

When the motor 230 is operated, a rotational force is transmitted to the cam member 240 through the motor shaft 231 , and the cam member 240 rotates. The motor 230 may be a one-way motor that rotates in only one direction.

For convenience, it is assumed that the cam member 240 rotates clockwise about the rotation center 242 based on FIG. 12 . When the cam member 240 rotates, a rotational force is transmitted to the opening/closing member 220 through the cam shaft 241 to rotate the opening/closing member 220 together.

The contact terminal 251 of the micro switch 250 is provided to contact the cam member 240 . The cam member 240 includes convex portions 243a, 243b, and 243c that protrude in the radial direction to turn the micro switch 250 on and off, and concave portions 244a, 244b and 244c that are depressed in the radial direction. .

The convex parts 243a, 243b, and 243c include a first convex part 243a, a second convex part 243b, and a third convex part 243c which are sequentially arranged in a counterclockwise direction, and the concave parts 244a and 244b. 244c may include a first concave portion 244a, a second concave portion 244b, and a third concave portion 244c sequentially arranged in a counterclockwise direction.

The micro switch 250 is turned on when the contact terminal 251 contacts the convex portions 243a, 243b, 243c of the cam member 240, and is connected to the concave portions 244a, 244b, and 244c of the cam member 240. It is assumed that they are arranged to be off when in contact. Accordingly, when the motor 230 is driven, the micro switch 250 may be turned on and off alternately.

On the other hand, the distribution device 200 designates the rotational positions of the opening and closing member 220 according to the on and off times of the micro switch 250, and rotates the opening and closing member 220 to a specific rotational position required among the designated rotational positions. It further includes a control unit for rotating or stopping the motor 230 to make it. The control unit may be configured as an electronic circuit.

For example, as shown in FIG. 13 , the controller may designate six rotational positions P1 , P2 , P3 , P4 , P5 , and P6 of the opening and closing member 220 .

The control unit determines the rotational position of the opening/closing member 220 at the time when the micro switch 250 is turned on and off for 5 seconds at six rotational positions P1, P2, P3, P4, P5, It can be designated as the first rotational position (P1) during P6).

In this embodiment, since the time point at which the micro switch 250 is turned on and off for 5 seconds is unique, the period in which the micro switch 250 is turned on for 5 seconds may be a reference reset period.

In addition, the rotational position of the opening and closing member 220 at the time of being turned on for 5 seconds and then turned off for 5 seconds and then turned on again may be designated as the second rotational position P2 .

In this way, it is possible to designate from the first rotational position P1 to the sixth rotational position P6.

In the six rotational positions P1, P2, P3, P4, P5, and P6 of the opening/closing member 220, the contact terminal 251 of the micro switch 250 is the contact terminal position T1, T2 shown in FIG. 12, respectively. , T3, T4, T5, T6).

In the control unit, the rotation position information of the opening and closing member 220 according to the on and off times of the micro switch 250 may be stored in advance in the form of a ROM.

In addition, the control unit includes the opening and closing information of the outlets 212a, 212b, and 212c of the distribution device 200 according to the respective rotational positions of the opening and closing member 220, and injection according to the opening and closing of the outlets 212a, 212b, and 212c. The injection information of the nozzles 311 , 313 , 340 , and 350 may also be pre-stored in the form of a ROM.

Therefore, when the user inputs the specific spray nozzles 311, 313, 340, and 350 to be used, the control unit determines the outlets 212a, 212b, and 212c to be opened and closed accordingly, and accordingly the specific rotation position of the opening and closing member 220 can be determined. have.

The control unit may drive the motor 230 to rotate the opening/closing member 220 to the determined specific rotational position, and when the opening/closing member 220 is rotated to the determined specific rotational position, the motor 230 may be stopped.

In this embodiment, when the opening/closing member 220 is in the first rotational position P1, only the second outlet 212b is opened, as shown in FIG. can be distributed.

When the opening/closing member 220 is in the second rotational position P2, as shown in FIG. 15 , only the third outlet 212c is opened, and thus, washing water can be distributed only to the right fixed nozzle 340 . .

The third rotational position P3 and the fourth rotational position P4 of the opening/closing member 220 are not used.

When the opening/closing member 220 is in the fifth rotational position P5, as shown in FIG. 16, only the first outlet 212a and the third outlet 212c are opened, and thus, the left fixed nozzle 330 And, the washing water may be distributed only to the right fixed nozzle 340 .

When the opening/closing member 220 is in the sixth rotational position P6, as shown in FIG. 17 , only the first outlet 212a is opened, and thus, washing water can be distributed only to the left fixed nozzle 330 . .

18 is an exploded view illustrating a bottom plate, a bottom plate cover, and a motor of the washing tub of the dish washing machine of FIG. 1 . 19 is a cross-sectional view of a bottom plate, a bottom plate cover, and a motor of the dishwasher of FIG. 1 . FIG. 20 is an exploded view illustrating a vane, a rail assembly, a spray nozzle assembly, and a bottom plate cover of the dishwasher of FIG. 1 .

A bottom plate cover of the dishwasher according to an embodiment of the present invention will be described with reference to FIGS. 18 to 20 .

The dishwasher 1 includes a bottom plate cover 600 coupled to one rear side of the bottom plate 35 of the washing tub 30 .

The bottom plate cover 600 serves to seal the motor passage hole 37 and the flow passage hole 38 formed in the bottom plate 35 , and to support the motor 530 driving the vane 400 . And, it serves to fix the rail assembly 430 and the nozzle assembly 300 of the dishwasher 1 .

Here, as described above, the nozzle assembly 300 includes an upper rotating nozzle 311 , an intermediate rotating nozzle 313 , a left fixed nozzle 330 , and a right fixed nozzle 340 .

The rail assembly 430 guides the movement of the vane 400 , and a detailed configuration will be described later.

A bottom plate protrusion 36 may be formed at the rear of the bottom plate 35 to be coupled to the bottom plate cover 600 . A motor passage hole 37 through which a motor 530 for driving the vane 400 passes, and a passage connecting the nozzle assembly 300 and the distribution device 200 ( FIG. 3 ) pass through the bottom plate protrusion 36 . The flow passage holes 38 may be formed.

The motor 530 is mounted on the underside of the bottom plate cover 600 , and when the bottom plate cover 600 is separated from the bottom plate 35 , the motor 530 moves through the motor through hole 37 to the bottom plate cover ( 600) can be withdrawn.

Specifically, the hose connection parts 652a, 652b, and 652c of the bottom plate cover 600 may pass through the flow passage holes 38 .

The bottom plate cover 600 is downward so that the shaft through hole 640 through which the drive shaft 531 of the motor 530 passes, and the hoses 271a, 271b, and 271c extending from the distribution device 200 are coupled to each other. The nozzle inlet protruding upward so that the hose connection parts 652a, 652b, and 652c protruded and inserted into the flow passage holes 38 of the bottom plate protrusion 36 and the inlets 315, 333, 343 of the nozzle assembly 300 are coupled to each other. Connection parts 651a, 651b, 651c, fastening holes 620 for fixing the nozzle assembly 300 and the rail assembly 430, and a rotation guide 610 protruding to guide the rotation of the vane 400 includes

The bottom plate cover 600 is closely coupled to the upper surface of the bottom plate protrusion 36 . Fixing caps 680 may be coupled to the hose connection parts 652a , 652b and 652c of the bottom plate cover 600 , so that the bottom plate cover 600 may be fixed to the bottom plate protrusion 36 .

Between the bottom plate cover 600 and the bottom plate protrusion 36, the washing water inside the washing tub 30 counts through the motor passage hole 37 of the bottom plate projection 36 and the flow passage holes 38. A sealing member 670 may be provided so as not to go out. The sealing member 670 may be formed of a rubber material.

A motor mounting part 630 in which a motor 530 for driving the vane 400 is mounted may be provided on the bottom surface of the bottom plate cover 600 . The driving shaft 531 of the motor 530 may protrude into the washing tub 30 through the shaft through hole 640 of the bottom plate cover 600 . A drive pulley 500 ( FIG. 21 ), which will be described later, is coupled to the drive shaft 531 of the motor 530 to rotate together with the drive shaft 531 .

A sealing member 660 may be provided in the shaft passing hole 640 to prevent the washing water inside the washing tub 30 from leaking into the shaft passing hole 640 . The sealing member 660 may be a mechanical sealing device that allows sealing to be performed with smooth rotation of the drive shaft 531 .

The upper surface of the bottom plate cover 600 may be provided to be inclined at a predetermined angle (θ, FIG. 19) with respect to the reference horizontal plane (H, FIG. 19).

This is to prevent dirt from accumulating on the bottom plate cover 600 or from progressing toward the fixed spray nozzles 330 and 340 . In the dishwasher 1 according to an embodiment of the present invention, since the fixed spray nozzles 330 and 340 do not move unlike the rotary nozzles 311 and 313, dirt may remain and stagnate. It can prevent problems from occurring.

It may be preferable that the inclination angle θ between the upper surface of the bottom plate cover 600 and the reference horizontal plane H is approximately 3° or more.

In addition, an end of the bottom plate cover 600 may be provided to be spaced apart from the bottom plate 35 by a predetermined distance (S, FIG. 19 ). This is due to manufacturing and assembling errors, making it difficult to completely adhere the bottom plate cover 600 to the bottom plate 35, rather, a minute gap formed between the end of the bottom plate cover 600 and the bottom plate 35. This is to prevent dirt from getting caught. The distance (S) between the end of the bottom plate cover 600 and the bottom plate 35 may be preferably about 5 mm or more.

The rail assembly 430 and the nozzle assembly 300 may be coupled to the bottom plate cover 600 . The bottom plate cover 600 , the rail assembly 430 , and the nozzle assembly 300 may be firmly fixed by the fastening member 690 . To this end, fastening holes 620 , 453 , and 347 may be formed at positions corresponding to the bottom plate cover 600 , the nozzle assembly 300 , and the rail assembly 430 , respectively.

With this structure, the rail assembly 430 and the nozzle assembly 300 may be fixed to each other and aligned with each other.

In the dishwasher 1 according to an embodiment of the present invention, the washing water sprayed from the fixed spray nozzles 330 and 340 of the nozzle assembly 300 does not directly face the dishes, but rather on the vanes 400 coupled to the rail assembly 430. Since it is reflected and directed toward the dishes, precise alignment of the fixed spray nozzles 330 and 340 and the rail assembly 430 is required, and this demand can be satisfied through such a coupling structure.

FIG. 21 is a view illustrating a vane and a driving device of the dishwasher of FIG. 1 , and is an exploded view illustrating the configuration of the driving device. 22 is a view illustrating a belt and a belt holder of the dishwasher of FIG. 1 . 23 is a cross-sectional view illustrating a rail, a belt, a belt holder, and a vane holder of the dishwasher of FIG. 1 . 24 is a view illustrating a rail, a belt, a driving pulley, and a rear holder of the dishwasher of FIG. 1 . 25 is a cross-sectional view illustrating a rail, a belt, a driving pulley, and a rear holder of the dishwasher of FIG. 1 . 26 is a view illustrating a rail, a belt, an idle pulley, and a front holder of the dishwasher of FIG. 1 . 27 is a cross-sectional view illustrating a rail, a belt, an idle pulley, and a front holder of the dishwasher of FIG. 1 .

21 to 27 , a vane of a dishwasher and a driving device thereof according to an exemplary embodiment of the present invention will be described.

The dishwasher 1 according to an embodiment of the present invention includes a vane 400 that reflects the washing water sprayed from the fixed nozzles 330 and 340 . The vane 400 may linearly reciprocate along the spray direction of the washing water sprayed from the fixed spray nozzles 330 and 340 .

The dishwasher 1 according to an embodiment of the present invention includes a driving device 420 for linearly reciprocating a vane 400 .

The driving device 420 includes a motor 530 that generates a driving force, and a rail assembly 430 that guides the movement of the vane 400 .

The rail assembly 430 guides the movement of the vane 400 and includes a rail 440 having an inner space 441 , a driving pulley 500 connected to the motor 530 to rotate, and a driving pulley 500 . The belt 520 connected to rotate and disposed in the inner space 441 of the rail 440 , the idle pulley 510 connected to the belt 520 to rotatably support the belt 520 , and the belt 520 . ) coupled to the belt holder 480 disposed in the inner space 441 of the rail 400 to make a linear reciprocating motion, and the belt holder 480 is coupled to the belt holder 480 and disposed on the outside of the rail 400 so as to make a linear reciprocating motion, and a vane The vane holder 490 to which 400 is coupled, the rear holder 450 rotatably supporting the driving pulley 500 and coupled to the rear end of the rail 440 , and the idle pulley 510 rotatably It supports and includes a front holder 460 coupled to the front end of the rail (440).

The rail 440 may be formed of a metal material. The rail 440 may be provided to extend long in the front-rear direction at the center based on the left wall 33 and the right wall 34 of the washing tub 30 .

The rail 440 may have a tubular shape in which an opening 445 is formed at a substantially lower portion. That is, the rail 440 includes an inner space 441 , an upper wall 442 , a lower wall 444 , both side walls 443 , and a lower opening 445 formed in the lower wall 444 . can do. The lower opening 445 may extend from one end in the longitudinal direction of the rail 440 to the other end.

The reason that the rail 440 is provided in the tubular shape is such that the belt 520 is disposed in the inner space 441 of the rail 400 , so that the belt 520 comes into contact with the dishes in the washing tub 30 to control the driving. This is to prevent interference or corrosion by contact with the washing water of the washing tank 30 .

In addition, the reason for forming the opening 445 in the lower wall 444 of the rail 440 is that the belt 520 disposed in the inner space 441 of the rail 440 and the rail 400 are provided outside. This is to transfer the driving force of the belt 520 to the vane 400 by connecting the vanes 400 .

The belt 520 is wound around the driving pulley 500 and the idle pulley 510 to form a closed curve, and when the motor 530 is driven, it may rotate according to the rotation direction of the motor 530 . The belt 520 may be formed of a resin material including aramid fibers in consideration of tensile strength and cost.

Teeth 521 for transmitting the driving force of the belt 520 to the belt holder 480 may be formed on the inner surface of the belt 520 .

The belt holder 480 is disposed in the inner space 441 of the rail 400 like the belt 520 , and is coupled to the teeth 521 of the belt 520 to move together with the belt 520 . To this end, the belt holder 480 may have a toothed coupling portion 481 coupled to the tooth 521 of the belt 520 .

In addition, the belt holder 480 may include legs 482 and 483 supported on the rail 400 . The legs 482 and 483 protrude laterally and support at least one lateral leg 482 supported on the sidewalls 443 of the rail 400 , and protrude downward and supported on the lower wall 444 of the rail 400 . at least one lower leg 483 .

The side legs 482 are provided to be elastically deformable to reduce noise and vibration due to collision and friction with the rail 400 during movement of the belt holder 480 and to allow the belt holder 480 to move smoothly. can

The lateral legs 482 may be a kind of leaf spring type of elastic body. That is, the lateral legs 482 may include a curved plate that elastically deforms between a relaxed shape and a compressed shape.

In addition, the belt holder 480 may have a fastening portion 484 for coupling with the vane holder 490 . The fastening part 484 may include a fastening hole 485 into which the fastening member 496 is inserted.

The vane holder 490 is coupled to the belt holder 480 to move together with the belt holder 480 and transmits the driving force of the belt holder 480 to the vane 400 . The vane holder 490 is provided to surround the outer surface of the rail 440 .

The vane holder 490 is coupled to the belt holder 480 through the lower opening 445 of the rail 440 . To this end, the vane holder 490 may have a fastening hole 491 for coupling with the belt holder 480 . Therefore, by fastening the fastening member 496 to the fastening hole 491 of the vane holder 490 and the fastening hole 485 of the belt holder 480, the vane holder 490 and the belt holder 480 can be coupled. can

The fastening member 496 proceeds from the bottom up and may be sequentially fastened to the fastening hole 491 of the vane holder 490 and the fastening hole 485 of the belt holder 480 .

A coupling protrusion 493 to which the vane 400 is detachably coupled may be formed in the vane holder 490 . The coupling protrusion 493 may include a coupling shaft portion 494 protruding laterally, and a separation preventing portion 495 formed at an end of the coupling shaft portion 494 to prevent separation of the vane 400 .

The drive pulley 500 includes a rotation shaft 501, a shaft connection part 503 connected to the drive shaft 530 of the motor 530 to receive driving force, and a belt coupling part 502 to which the belt 520 is coupled. include

The rear holder 450 rotatably supports the driving pulley 500 and is coupled to the rear end of the rail 440 . The rear holder 450 includes a pulley support surface 451 supporting the rotation shaft 501 of the driving pulley 500 , a rail support surface 452 supporting the rear end of the rail 440 , and a bottom plate cover 600 . Includes a fastening hole 453 for coupling to.

The idle pulley 510 includes a rotating shaft 511 and a belt coupling part 512 to which the belt 520 is coupled.

The front holder 460 includes a front top holder 461 , a front bottom holder 465 coupled to a lower portion of the front top holder 461 , and a rail between the front top holder 461 and the front bottom holder 465 . It is provided to be movable along the longitudinal direction of the 440 and includes a pulley bracket 467 for rotatably supporting the idle pulley 510 .

The front top holder 461 includes a pulley support surface 462 supporting the rotation shaft 511 of the idle pulley 510 and a rail support surface 463 supporting the front end of the rail 440 .

The front bottom holder 465 may be coupled to a lower portion of the front top holder 461 by a locking structure. The front bottom holder 465 may have a coupling protrusion 466 coupled to the bottom plate 35 of the washing tub 30 .

The pulley bracket 467 includes a pulley support surface 468 supporting the rotation shaft 511 of the idle pulley 510 .

Meanwhile, the rail 440 , the belt 520 , the driving pulley 500 , the rear holder 450 , the idle pulley 510 , and the front holder 460 are interconnected by the tension of the belt 520 . can be assembled.

That is, the driving pulley 500 is pressed in a direction closer to the rail 440 by the tension of the belt 520 , and this force is applied to the rear holder 450 through the pulley support surface 451 of the rear holder 450 . As a result, the rear holder 450 is closely coupled to the rear end of the rail 440 .

In addition, the idle pulley 510 is pressed in a direction closer to the rail 440 by the tension of the belt 520 , and this force is applied to the front holder 460 through the pulley support surface 462 of the front holder 460 . As a result, the front holder 460 is closely coupled to the front end of the rail 440 .

Meanwhile, the front holder 460 may further include an elastic member 470 to maintain tension of the belt 520 . This is, when the belt 520 is thermally expanded by the heat inside the washing tank 30, the belt 520 is stretched to reduce the tension of the belt 520, and when the tension of the belt 520 is reduced, the vane 400 is smooth. because it cannot be driven.

One end of the elastic member 470 may be supported by the front holder 460 , and the other end of the elastic member 470 may be supported by the pulley bracket 467 . To this end, elastic member support surfaces 464 and 469 may be formed on the front holder 460 and the pulley bracket 467 , respectively.

The elastic member 470 may be a compression spring. Since the front holder 460 is supported on the rail 440 by the rail support surface 463 , the elastic force of the elastic member 470 may act on the pulley bracket 467 . That is, the pulley bracket 467 may be pressed in a direction away from the rail 440 by the elastic force of the elastic member 470 .

At this time, since the pulley bracket 467 is pressed in a direction closer to the rail 440 by the tension of the belt 520 , the pulley bracket 467 is the tension of the belt 520 and the elastic force of the elastic member 470 . This will move to a balanced position.

That is, when the belt 520 is stretched to reduce the tension and the elastic force of the elastic member 470 is greater than the tension of the belt 520 , the pulley bracket 467 is moved from the rail 440 by the elastic force of the elastic member 470 . When the pulley bracket 467 moves away from the rail 440 in this way, the belt 520 is pulled tight again, so that the tension of the belt 520 is restored.

With this configuration, even when the belt 520 is stretched by thermal expansion, the pulley bracket 467 moves and pulls the belt 520 so that the tension of the belt 520 can be constantly maintained, and the driving device 420 . reliability can be improved.

An assembly sequence of the rail assembly 430 of the dishwasher according to an embodiment of the present invention will be described.

22 , the belt holder 480 is coupled to the belt 520 .

23 , the assembly of the belt 520 and the belt holder 480 is disposed in the inner space 441 of the rail 440 . Next, the vane holder 490 is coupled to the assembly of the belt 520 and the belt holder 480 through the fastening member 496 .

24 , the rear holder 450 is assembled to the rear end of the rail 440 in the longitudinal direction. Next, the driving pulley 500 is coupled to the belt 520 .

As shown in FIG. 26 , the front top holder 461 is coupled to the front end of the rail 440 in the longitudinal direction. Next, the belt 520 , the idle pulley 510 , the pulley bracket 467 , and the elastic member 470 are coupled. Next, the assembly of the belt 520 , the idle pulley 510 , the pulley bracket 467 , and the elastic member 470 is pushed into the front top holder 461 . Next, the front bottom holder 465 is coupled to the front top holder 461 .

28 is a view illustrating a vane and a vane holder of the dishwasher of FIG. 1 . 29 is a perspective view illustrating a vane of the dishwasher of FIG. 1 . FIG. 30 is an enlarged view of a vane and a part of the vane holder of the dish washing machine of FIG. 1 .

28 to 30, a vane according to an embodiment of the present invention will be described.

The vane 400 may be provided to extend in a direction perpendicular to the rail 440 .

The vane 400 includes a reflective part 401 that reflects the washing water sprayed from the fixed nozzles 330 and 340 , an upper support part 410 bent by the reflective part 401 , and a rear support part bent by the upper support part 410 . (411), the cap portion 404 provided in the longitudinal central portion of the reflective portion 401, and the rotation stopper 409 provided to interfere with the rotation guide 610 (FIG. 31) of the bottom plate cover 600, and , a reinforcing rib 414 provided to reinforce the strength of the reflective portion 401, the upper support portion 410, and the rear support portion 411, and the horizontal support portion 412 supported on the upper surface of the vane holder 490, and the vane A vertical support part 413 supported on the side of the holder 490 may be included.

The reflective part 401 includes reflective surfaces 402a and 402b that are inclined to reflect the washing water. The reflective surfaces 402a and 402b may include a reflective surface 402a and a reflective surface 402b that are alternately arranged in the longitudinal direction with different inclinations to make the reflection angle of the washing water different.

The cap portion 404 has a coupling groove 405 for coupling with the vane holder 490 and the range of rotation of the vane 400 when the vane 400 is rotated by the rotation guide 610 of the bottom plate cover 600 . It may include a rotation stopper portion 408 to limit the.

The coupling protrusion 493 of the vane holder 490 may be coupled to the coupling groove 405 of the vane 400 . Specifically, the coupling shaft portion 494 of the coupling protrusion 493 may be inserted into the coupling groove 405 of the vane 400 . The coupling shaft portion 494 may rotatably support the vane 400 .

30 , the coupling groove 405 of the vane 400 may be formed by elastic hooks 407 . The elastic hooks 407 are elastically deformed in a multi-fold direction in the process of pushing or withdrawing the coupling shaft portion 494 of the vane holder 490 into the coupling groove 405 of the vane 400. can be restored to With this configuration, the vane 400 may be mounted and detached from the vane holder 490 .

Rollers 415 for smooth movement of the vane 400 may be provided at both ends of the vane 400 in the longitudinal direction. A roller support portion 39 ( FIG. 47 ) for supporting the rollers 415 may be provided on the bottom plate 35 of the washing tub 30 .

31 to 33 are views illustrating a rotating operation of the vane of the dishwasher of FIG. 1 . 34 is a diagram illustrating an operation in which the vane reflects washing water in the vane movement section of the dishwasher of FIG. 1 . 35 is a diagram illustrating an operation in which the vane reflects washing water in the vane non-moving section of the dishwasher of FIG. 1 .

31 to 35 , a moving section, a non-moving section, and a rotation operation of the vane according to an embodiment of the present invention will be described.

In the dish washing machine 1 according to an embodiment of the present invention, the vane 400 reflects the washing water sprayed from the fixed spray nozzles 330 and 340 toward the dish. Since the fixed spray nozzles 330 and 340 spray the washing water in a substantially horizontal direction, the fixed spray nozzles 330 and 340 and the vane 400 are positioned substantially horizontally to each other. Accordingly, the vane 400 cannot move in the area where the fixed spray nozzles 330 and 340 are disposed.

That is, the dishwasher 1 has a vane moving section I1 in which the vanes 400 can move and a vane non-moving section I2 in which the vanes 400 cannot move.

The vane 400 of the dishwasher 1 according to an embodiment of the present invention may be rotatably provided to wash dishes stored in the vane non-moving section I2 .

As described above, the rotation guide 610 protruding to guide the movement of the vane 400 is formed on the bottom plate cover 600 , and the rotation stopper 409 is provided on the vane 400 to interfere with the rotation guide 610 . ) is formed. The rotation stopper 409 is formed above the coupling protrusion 493 of the vane holder 490 which forms a rotation shaft of the vane 400 and transmits a driving force to the vane 400 at the same time.

The rotation guide 610 includes a guide surface 611 formed in a curved surface so that the rotation stopper 409 is in contact and the vane 400 can rotate smoothly.

When the vane 400 reaches the vane non-moving section I2 in the vane moving section I1 , the rotation stopper 409 of the vane 400 is the guide surface of the rotation guide 610 of the bottom plate cover 600 . When it interferes with the 611 , the vane 400 rotates around the coupling protrusion 493 of the vane holder 490 . Accordingly, it is possible to reflect the washing water toward the dishes in the non-moving section I2 .

36 is a view illustrating a sump, a coarse filter, and a fine filter of the dishwasher of FIG. 1 . FIG. 37 is an exploded view illustrating a sump, a coarse filter, a fine filter, and a micro filter of the dishwasher of FIG. 1 . 38 is a cross-sectional view taken along line I-I of FIG. 36 . FIG. 39 is an enlarged view of part B of FIG. 38 . 40 is a cross-sectional view taken along line II-II of FIG. 38 . FIG. 41 is an enlarged view of part C of FIG. 40 . 42 is a plan view illustrating the sump and coarse filter of the dish washing machine of FIG. 1 , illustrating a locking operation of the coarse filter. 43 is a side view illustrating a coarse filter of the dishwasher of FIG. 1 . 44 is a diagram illustrating a sump and a coarse filter of the dish washing machine of FIG. 1 , and is a diagram illustrating a locking operation of the coarse filter. 45 is a cross-sectional view illustrating a sump, a coarse filter, and a micro filter of the dishwasher of FIG. 1 . 46 is an enlarged plan view of a coarse filter and a micro filter of the dish washing machine of FIG. 1 . 47 is a plan view illustrating a lower portion of the washing tub of the dish washing machine of FIG. 1 .

The dishwasher 1 according to an embodiment of the present invention includes a sump 100 for storing washing water, a circulation pump 51 for circulating the washing water from the sump 100 to spray nozzles 311, 313, 330 and 340, and a sump 100 ) includes a drain pump 52 for discharging the washing water together with the dirt to the outside of the body 10, and filters 120, 130, and 140 for filtering out the dirt contained in the washing water.

A drain 50 (FIG. 47) for draining the washing water to the sump 100 is formed in the bottom plate 35 of the washing tub 30, and the bottom plate 35 of the washing tub 30 is drained by the washing water by its own weight ( 50), it may have an inclination toward the drain port 50 side.

The sump 100 may have a substantially hemispherical shape with an open top surface. The sump 100 includes a bottom 101 , a side wall 103 , a water storage chamber 110 formed on the bottom 101 and the side wall 103 and storing washing water, and a circulation pump 51 . It includes a circulation port 107 to which it is connected, and a drain port 108 to which a drain pump 52 is connected.

The filters 120, 130, and 140 are a fine filter 120 mounted on the drain 50 of the bottom plate 35, a coarse filter 140 mounted on the sump 100, and a micro filter 130, micro filter).

The coarse filter 140 may have a substantially cylindrical shape. The coarse filter 140 may be mounted on the inner surface of the sidewall 103 of the sump 100 .

The coarse filter 140 may have a filter unit 142 that filters out relatively large-sized dirt, and a handle 141 for mounting the coarse filter 140 . The filter unit 142 of the coarse filter 140 may be formed on a circumferential surface of the coarse filter 140 .

The coarse filter 140 passes through the passage hole 139 of the micro filter 130 and the passage hole 121 of the fine filter and is mounted on the sump 100 . The upper portion of the coarse filter 140 protrudes into the washing tub 30 and the lower portion protrudes into the waste collection chamber 111 of the sump 100 . The dirt collection chamber 111 will be described later.

The fine filter 120 may have a filter unit 121 that filters out dirt of a relatively medium size or larger, and a through hole 122 through which the coarse filter 140 passes. The fine filter 120 may be mounted approximately horizontally on the drain hole 50 of the bottom plate 35 of the washing tub 30 . The fine filter 120 may have an inclination such that the washing water is guided toward the passage hole 122 by its own weight.

The washing water of the washing tank 30 may flow toward the coarse filter 140 along the slope of the fine filter 120 . However, some washing water and dirt may pass through the filter unit 121 of the fine filter 120 and directly flow into the water storage chamber 110 of the sump 100 .

The micro filter 130 filters dirt of a relatively small size or larger and includes a filter unit 131 having a flat shape, frames 132 , 133 , 135 supporting the filter unit 131 , and a through hole through which the coarse filter 140 passes. (139) can have.

The frames 132 , 133 , and 135 include an upper frame 132 , a lower frame 133 , and side frames 135 . The micro filter 130 is formed in the sump 100 so that the lower frame 133 is in close contact with the bottom 101 of the sump 100 and the side frames 135 are in close contact with the side wall 103 of the sump 100 . is mounted on

The micro filter 130 may divide the water storage chamber 110 of the sump 100 into a waste collection chamber 111 and a circulation chamber 112 . A drain pump 52 is connected to the waste collection chamber 111 , and a circulation pump 51 is connected to the circulation chamber 112 .

As described above, since the lower portion of the coarse filter 140 is provided to protrude into the dirt collecting chamber 111 , the washing water that has passed through the coarse filter 140 and the dirt contained in the washing water are introduced into the waste collecting chamber 111 . do.

The washing water introduced into the waste collection chamber 111 may pass through the micro filter 130 and flow into the circulation chamber 112 . However, since the dirt contained in the washing water flowing into the waste collection chamber 111 does not pass through the micro filter 130 , it does not flow into the circulation chamber 112 and remains in the waste collection chamber 111 as it is.

The dirt collected in the waste collection chamber 111 may be discharged to the outside of the body 10 together with the washing water when the drain pump 52 is operated.

On the other hand, the micro filter 130 is disposed at the bottom ( 101) and the side wall portion 103 should be in close contact.

To this end, a lower sealing groove 134 may be formed in the lower frame 133 of the micro filter 130 , and a side sealing protrusion 136 may be formed in the side frame 135 . Correspondingly, a lower sealing protrusion 102 inserted into the lower sealing groove 134 is formed on the bottom portion 101 of the sump 100 , and a side sealing protrusion 136 is formed on the side wall portion 103 of the sump 100 . ) A side sealing groove 104 into which is inserted may be formed.

The sealing of the micro filter 130 and the sump 100 can be strengthened by the downward and lateral protrusion and groove structures.

Meanwhile, after the coarse filter 140 is vertically inserted into the sump 100 , the coarse filter 140 may be rotated from the unlocked position to the locked position to be mounted on the sump 100 .

To this end, a mounting protrusion 143 is formed on the outer peripheral surface of the coarse filter 140 , and the mounting protrusion 143 is formed on the inner surface of the side wall 103 of the sump 100 when the coarse filter 140 rotates from the unlocked position to the locked position. A mounting groove 105 into which the 143 is inserted in the horizontal direction may be formed.

The mounting protrusion 143 may have an upwardly inclined surface 144 that rises in the direction of rotation from the unlocked position to the locked position of the coarse filter 140 . The mounting groove 105 may have a downwardly inclined surface 106 downward in the direction of rotation of the coarse filter 140 from the unlocked position to the locked position.

With this structure, when the coarse filter 140 is rotated from the unlocked position to the locked position, the upwardly inclined surface 144 of the mounting protrusion 143 slides along the downwardly inclined surface 106 of the mounting groove 105 and the coarse filter ( 140) can move downwards.

When the coarse filter 140 rotates from the unlocked position to the locked position, the coarse filter 140 may press the micro filter 130 downward while moving downward. To this end, the coarse filter 140 may have a downward pressing surface 145 formed horizontally to press the micro filter 130 downward. The micro filter 130 may have a lower corresponding surface 137 that is horizontally formed so as to be pressed by the lower pressing surface 145 .

As described above, when the coarse filter 140 is rotated from the unlocked position to the locked position, the micro filter 130 is pressed downward, so that the lower frame 133 of the micro filter 130 and the bottom of the sump 100 are The sealing of 101 can be further strengthened, and floating of the micro filter 130 can be prevented.

In addition, the coarse filter 140 may have a lateral pressing surface 146 formed by expanding a part of the outer peripheral surface radially outward to press the micro filter 130 laterally when rotating from the unlocked position to the locked position. . That is, the coarse filter 140 may have a full shape or an elliptical shape.

The micro filter 130 may have a lateral mating surface 138 that is laterally pressed by the lateral pressing surface 146 .

With this configuration, when the coarse filter 140 is rotated from the unlocked position to the locked position, the micro filter 130 is pressed laterally, and the side frame 135 of the micro filter 130 and the side wall portion 103 of the sump 100 are ) can be further strengthened.

Meanwhile, as shown in FIG. 47 , the coarse filter 140 may be disposed to be biased toward one of the sidewalls 33 and 34 of the washing tub 30 . That is, the coarse filter 140 may be disposed closer to the left wall 33 than to the right wall 34 . With such an arrangement of the coarse filter 140 , the coarse filter 140 can be easily separated without interfering with the rail 440 when the coarse filter 140 is separated.

48 is a view illustrating a detailed structure of a belt of the dishwasher of FIG. 1 .

Referring to FIG. 48 , belt 520 may be a timing belt having teeth 524 . The teeth 524 may be engaged with the teeth of the driving pulley 500 and the idle pulley 510 to receive power.

The belt 520 may include a belt body 522 having a belt portion 523 and teeth 524 , and a core wire 525 embedded in the belt body 522 . The core wire 525 is to increase the durability of the belt 520 , and a plurality of fibers of a predetermined material may be embedded in the belt body 522 in a spirally twisted form.

In general, the belt body of the timing belt may be formed of a rubber material or a polyurethane material, but the belt body 522 of the belt of this embodiment is preferably formed of a polyurethane material. This is because, as is known, the polyurethane material has better water resistance and is cleaner than the rubber material, so it is more suitable for the belt body 522 of the dishwasher, which is always exposed to washing water and detergent in the washing tub. However, the material of the belt body 522 is not limited.

In addition, in general, iron, glass, or carbon fiber is used as the core wire 525 of the timing belt, but the core wire 525 of this embodiment is preferably formed of aramid fiber. Aramid fiber refers to an aromatic polyamide fiber, and may include, for example, DuPont's trade name Kevelar fiber. Aramid fibers have excellent tensile strength and elasticity compared to fibers of other materials, and have a low price, and thus may be most suitable as a reinforcing material of the belt body 522 of this embodiment. However, as the core wire 525, other fibers may be used instead of aramid fibers, or aramid fibers and other fibers may be mixed and used.

49 is an exploded view showing the configuration of the driving device according to the second embodiment of the present invention.

With reference to Fig. 49, a driving device according to a second embodiment of the present invention will be described. The same reference numerals are assigned to the same components as those of the first embodiment, and descriptions thereof may be omitted.

The driving device 720 of the dishwasher causes the vanes 400 that reflect the washing water sprayed from the nozzle to linearly reciprocate along the jetting direction of the washing water. The driving device 720 includes a motor 530 generating a driving force, a rail 721 guiding the movement of the vane 400 , a driving pulley 500 connected to the motor 530 to rotate, and a driving pulley ( A belt 520 connected to 500 , rotated and disposed in the inner space of the rail 721 , an idle pulley 510 connected to the belt 520 to rotatably support the belt 520 , and a belt 520 . ) coupled to the belt holder 480 disposed in the inner space of the rail 721 to linearly reciprocate, and the vane 400 coupled to the belt holder 480 and disposed on the outside of the rail 400 to linearly reciprocate. It may include a vane holder 490 to which it is coupled.

The rail 721 may have a tubular shape in which an opening is formed at a substantially lower portion. The belt 520 disposed in the inner space of the rail 721 through the lower opening of the rail 721 and the vane 400 provided on the outside of the rail 721 are connected, and the rolling force of the belt 520 is It may be transferred to the vane 400 .

At both ends of the rail 721, the driving pulley 500 and the pulley mounting parts 722 and 723 to which the idle pulley 510 are rotatably coupled are provided, respectively, the driving pulley 500 and the idle pulley 510 are the first embodiment It can be directly coupled to the rail 721 without the front holder and the rear holder of the driving device according to the present invention.

50 is a cross-sectional view illustrating a rail, a belt, an idle pulley, a front holder, and a tension maintaining device of a driving device according to a third embodiment of the present invention.

Referring to Fig. 50, a driving device according to a third embodiment of the present invention will be described. The same reference numerals may be assigned to the same components as those of the other embodiments described above, and descriptions thereof may be omitted.

The driving device 730 includes a rail 731 for guiding the movement of the vane 400 ( FIG. 21 ), a belt 732 disposed in the inner space of the rail 731 , and a motor 530 ( FIG. 21 ) for generating a driving force. ), a driving pulley 500 (FIG. 21) connected to the motor 530, an idle pulley 735 connected to the belt 732 to rotatably support the belt 732, and an idle pulley 735. The pulley holder 733 for rotatably supporting, the belt holder 480 (FIG. 21), which is coupled to the belt 732 and disposed in the inner space of the rail 731 to linearly reciprocate, and the belt holder 480 are coupled to the belt holder 480 A vane holder 490 (FIG. 21) that is disposed on the outside of the rail 731 and coupled to the vane 400 so as to make a linear reciprocating motion, and an elastic member 738 that is a tension adjusting device for adjusting the tension of the belt 732. may include

A rail 731 may be supported on the pulley holder 733 . The rotation shaft 736 of the idle pulley 735 may extend upward and downward of the pulley holder 733 .

The elastic member 738 may be coupled to an end of the pulley holder 733 . The elastic member 738 may include an insertion hole 738c into which the rotation shaft 736 of the idle pulley 735 is inserted, and a hook portion 738b in close contact with the rotation shaft 736 .

The elastic member 738 is integrally formed, the insertion hole 738c and the hook portion 738b are respectively formed at both ends of the elastic member 738, and the elastic member 738 is bent twice to insert the insertion hole ( 738c) and the hook portion 738b may be coupled to the upper end and lower end of the rotation shaft 736 of the idle pulley 735, respectively.

Accordingly, the idle pulley 735 may be pressed in a direction (arrow in FIG. 50 ) for applying a tension to the belt 732 by the elastic force of the elastic member 738 .

Therefore, initially, the idle pulley 735 is at a position where the elastic force of the elastic member 738 and the tension of the belt 732 are balanced, and when the tension of the belt 732 is weakened, the elastic force of the elastic member 738 is reduced. Accordingly, it is possible to impart tension to the belt 732 by slightly moving toward the elastic member 738 .

Unexplained reference numeral 737 denotes a belt mounting portion of the idle pulley 735 .

51 is a cross-sectional view illustrating a rail, a belt, an idle pulley, a front holder, and a tension maintaining device of the driving device according to the fourth embodiment of the present invention.

With reference to Fig. 51, a driving device according to a fourth embodiment of the present invention will be described. The same reference numerals may be assigned to the same components as those of the other embodiments described above, and descriptions thereof may be omitted.

The driving device 740 includes a rail 741 for guiding the movement of the vane 400 ( FIG. 21 ), a belt 742 disposed in the inner space of the rail 741 , and a motor 530 ( FIG. 21 ) for generating a driving force. ), a driving pulley 500 (FIG. 21) connected to the motor 530, an idle pulley 744 connected to the belt 742 to rotatably support the belt 742, and an idle pulley 744. The pulley holder 743 for rotatably supporting, the belt holder 480 (FIG. 21), which is coupled to the belt 742 and disposed in the inner space of the rail 741 to linearly reciprocate, and the belt holder 480 are coupled to the belt holder 480 A vane holder 490 (FIG. 21) that is disposed on the outside of the rail 741 and coupled to the vane 400 so as to make a linear reciprocating motion, and a position adjusting device 747, which is a tension adjusting device for adjusting the tension of the belt 742. may include.

A rail 741 may be supported on the pulley holder 743 . The rotation shaft 745 of the idle pulley 744 may extend upward and downward of the pulley holder 743 .

The position adjusting device 747 is a slide member 748 that is coupled to the rotation shaft 745 of the idle pulley 744 and is provided to be movable along the longitudinal direction of the rail 741, and the slide member 748 is adjusted to move the member 749 may be included.

Insertion holes 748a through which the rotation shaft 745 of the idle pulley 744 is coupled may be formed at both ends of the slide member 748 . That is, the rotation shaft 745 of the idle pulley 744 may be rotatably supported by the insertion hole 748a of the slide member 748 . Accordingly, when the slide member 748 moves, the idle pulley 744 may move together.

The slide member 748 may include a female threaded portion 748b to which the adjustment member 749 is threaded, and the adjustment member 749 may be a screw having a male threaded portion 749a threaded to the female threaded portion 748b. .

The adjustment member 749 may be provided such that the longitudinal end thereof is supported by the pulley holder 743 . Accordingly, when the adjustment member 749 rotates, the adjustment member 749 does not advance and retreat, but instead the slide member 748 may advance and retreat along the longitudinal direction of the rail 741 . When the slide member 748 advances and retreats, the idle pulley 744 advances and retreats together, and accordingly, the belt 742 wound around the idle pulley 744 is tightened or loosened, so that the tension can be adjusted.

Unexplained reference numeral 746 denotes a belt mounting portion of the idle pulley 744 .

52 is a plan view illustrating a belt, an idle pulley, a front holder, and a tension maintaining device of a driving device according to a fifth embodiment of the present invention. 53 is a cross-sectional view illustrating a detailed structure of the tension maintaining device of FIG. 52 .

52 to 53, a driving device according to a fifth embodiment of the present invention will be described. The same reference numerals may be assigned to the same components as those of the other embodiments described above, and descriptions thereof may be omitted.

The driving device 750 includes a belt 751 , a motor 530 ( FIG. 21 ) for generating a driving force, a driving pulley 500 ( FIG. 21 ) connected to the motor 530 , and a belt 751 to be rotatable. An idle pulley 754 connected to the belt 751 to support it, a pulley holder 752 that rotatably supports the idle pulley 754, and a pressure device that is a tension control device that adjusts the tension of the belt 742 ( 755) may be included.

52 , the pressing device 755 can adjust the tension of the belt 751 by pressing the opposite side of the teeth 751a of the belt 751 .

The pressing device 755 includes a roller 756 that is a pressing member that is in contact with the opposite surface of the toothed portion 751a of the belt 751, and a slide member that moves the roller 756 in a direction perpendicular to the belt 751 ( 758 , and an adjustment member 780 for moving the slide member 758 may be included.

The roller 756 may be rotatably supported on the slide member 758 by a rotation shaft 757 . The pulley holder 752 may include a guide groove 735 formed so that the rotation shaft 757 of the roller 756 can advance and retreat, and an accommodating space 754 accommodating the slide member 758 .

The adjusting member 780 may be a screw having a male screw portion 781 , and a female screw portion 759 to which the male screw portion 781 is screwed may be formed on the slide member 758 . A longitudinal end of the adjustment member 780 may be supported by a pulley holder 752 . Accordingly, when the adjustment member 780 rotates, the slide member 758 moves in a direction perpendicular to the belt 751 , and the roller 756 moves in a direction perpendicular to the belt 751 with it, so that the belt 751 ) can be tightened or loosened.

The scope of the present invention is not limited to the specific embodiments described above. Various other embodiments that can be modified or modified by those of ordinary skill in the art within the scope that do not deviate from the gist of the present invention specified in the claims will also fall within the scope of the present invention.

1: dishwasher 10: main body
11: Door 12a, 12b: Basket
30: washing tank 31: upper wall
32: rear wall 33: left wall
34: right wall 35: bottom plate
36: bottom plate protrusion 37: motor through hole
38: passage hole 39: roller support
50: drain 51: circulation pump
52: drain pump
100: sump 101: bottom
102: lower sealing protrusion 103: side wall portion
104: side sealing groove 105: mounting groove
106: downward slope 107: circulation port
108: drain port 109: distribution device coupling part
110: water storage chamber 111: waste collection chamber
112: circulation chamber 120: fine filter
121: filter unit 122: through hole
130: micro filter 131: filter unit
132: upper frame 133: lower frame
134: lower sealing groove 135: side frame
136: side sealing projection 137: downward corresponding surface
138: side corresponding surface 139: through hole
140: course filter 141: knob
142: filter unit 143: mounting projection
144: upward inclined surface 145: downward pressing surface
146: side pressure surface
200: distribution device 210: housing
211: inlet 212a, 212b, 212c: first, second, third outlet
223: sump coupling part 220: opening and closing member
221: rotating body 222: communication hole
223: locking hole 224: spaced protrusion
225: sealing member 226: sealing part
227: coupling protrusion 228: stopper part
229: camshaft coupling portion 230: motor
231: motor drive shaft 240: cam member
241: camshaft 242: center of rotation
243a, 243b, 243c: convex part 244a, 244b, 244c: concave part
250: micro switch 251: contact terminal
260: support member 271a: first hose
271b: second hose 271c: third hose
300: nozzle assembly 311: upper rotating nozzle
312: injection hole 313: intermediate rotation nozzle
314: injection hole 315: rotary nozzle inlet
320: fixed nozzle assembly 330: left fixed nozzle
331: injection hole 332: nozzle flow path
333: nozzle inlet 334: nozzle body
335: nozzle cover 336: decorative member
337: bottom plate cover fastening hole 340: right fixing nozzle
341: injection hole 342: nozzle flow path
343: nozzle inlet 344: nozzle body
345: nozzle cover 346: decorative member
347: bottom plate cover fastening hole
400: vane 401: reflector
402a, 402b: reflective surface 404: cap portion
405: coupling groove 407: elastic hook
408: rotation stopper part 409: rotation stopper part
410: horizontal support 411: vertical support
412: upper support 413: lateral support
414: reinforcing rib 415: roller
420: drive device 430: rail assembly
440: rail 441: interior space
442: upper wall 443: side wall
444: lower wall 445: lower opening
450: rear holder 451: pulley support surface
452: rail support surface 453: bottom plate cover fastening hole
460: front holder 461: front top holder
462: pulley support surface 463: rail support surface
464: elastic member support surface 465: front bottom holder
466: coupling projection 467: pulley bracket
468: pulley support surface 469: elastic member support surface
470: elastic member 480: belt holder
481: toothed coupling portion 482: lateral leg
483: lower leg 484: fastening part
485: fastening hole 490: vane holder
491: fastening hole 492: upper support part
493: coupling protrusion 494: coupling shaft
495: separation prevention part 496: fastening member
500: drive pulley 501: rotation shaft
502: belt coupling part 503: shaft coupling part
510: idle pulley 511: rotation shaft
512: belt coupling part 520: belt
521: tooth 530: motor
531 drive shaft
600: bottom plate cover 610: rotation guide
611: guide surface 620: fastening hole
630: motor mounting part 640: shaft through hole
651a: left fixed nozzle inlet connection part
651b: rotary nozzle inlet connection
651c: right fixed nozzle inlet connection part
652a, 652b, 652c: hose connection
660: shaft through hole sealing member 670: bottom plate sealing member
680: fixed cap 690: fastening member
720,730,740,750: drive device 738,747,755: tension control device
H : Reference plane of the bottom plate cover I1 : Vane movement section
I2: vane non-moving section
P1,P2,P3,P4,P5,P6 : Rotational position of the opening/closing member
S : Spacing between the bottom plate cover and the bottom plate
T1, T2, T3, T4, T5, T6 : Position of the contact terminal
θ: slope of the bottom plate cover

Claims (42)

main body;
a washing tank provided inside the body;
a fixed nozzle fixed to one side of the washing tank and spraying washing water;
a vane that moves inside the washing tank and reflects the washing water sprayed from the fixed nozzle toward the dishes; and
a driving device for driving the vanes; including,
The driving device is
a motor generating a driving force;
a belt connected to a driving pulley and an idle pulley and rotating to transmit the driving force of the motor to the vane;
a rail for guiding the movement of the vane;
a rear holder rotatably supporting the drive pulley and coupled to one end of the rail by tension of the belt; and
a front holder rotatably supporting the idle pulley and coupled to the other end of the rail by tension of the belt; Dishwasher comprising a. The method of claim 1,
wherein the rail has a tubular shape having an inner space and a lower opening formed at a lower portion. 3. The method of claim 2,
wherein the belt is disposed in the inner space of the rail. 3. The method of claim 2,
and the driving device further includes a belt holder coupled to the teeth of the belt and moving together with the belt in the inner space of the rail. 5. The method of claim 4,
The driving device further comprises a vane holder provided to surround the outer surface of the rail, coupled to the belt holder through the lower opening of the rail to move together with the belt holder, and to which the vane is coupled the dishwasher. The method of claim 1,
wherein the front holder includes a front top holder, a front bottom holder, and a pulley bracket provided between the front top holder and the front bottom holder to rotatably support the idle pulley. 7. The method of claim 6,
The front holder may further include an elastic member elastically supporting the pulley bracket to maintain tension of the belt. 8. The method of claim 7,
One end of the elastic member is supported by the front top holder or the front bottom holder, and the other end of the elastic member is supported by the pulley bracket. 8. The method of claim 7,
The pulley bracket is provided to be movable with respect to the front top holder and the front bottom holder. 8. The method of claim 7,
wherein the elastic member is a compression spring. The method of claim 1,
The belt is a dishwasher, characterized in that formed of a resin material. The method of claim 1,
The driving shaft of the motor passes through the bottom plate of the washing tub and is coupled to the driving pulley. delete delete delete delete delete delete delete delete A method for manufacturing a dishwasher having a main body, a washing tub, and a sump storing washing water, the method comprising:
Assembling a nozzle assembly having at least one spray nozzle receiving the washing water from the sump and spraying the washing water,
Assembling a rail assembly guiding movement of a vane that moves inside the washing tub and reflects the washing water sprayed from the at least one spray nozzle toward the dishes,
Prepare the bottom plate cover,
Assembling a bottom plate cover assembly by combining the nozzle assembly, the rail assembly, and the bottom plate cover,
and coupling the bottom plate cover assembly to one side of the bottom plate of the washing tank,
Assembling the rail assembly comprises:
connect the belt to the drive pulley,
A rear holder for rotatably supporting the drive pulley is coupled to one end of the rail,
connecting the belt to the idle pulley,
and coupling a front holder for rotatably supporting the idle pulley to the other end of the rail by tension of the belt,
The rail assembly is disposed in a lower portion of the washing tub to be spaced apart from both side walls of the washing tub. 22. The method of claim 21,
and coupling a motor for driving the vane to a bottom surface of the bottom plate cover. 23. The method of claim 22,
and coupling a sealing member to the drive shaft of the motor to seal the shaft passage hole formed in the bottom plate cover. 22. The method of claim 21,
and coupling a sealing member between the bottom plate cover and the bottom plate of the washing tub to seal the motor passage hole and the flow passage hole formed in the bottom plate of the washing tub. delete main body;
a washing tank provided inside the body;
a fixed nozzle fixed to one side of the washing tank and spraying washing water;
a vane that moves inside the washing tank and reflects the washing water sprayed from the fixed nozzle toward the dishes; and
a driving device for driving the vanes; including,
The driving device is
a motor generating a driving force;
a rail for guiding the movement of the vane;
a driving pulley provided on one side of the rail and connected to a driving shaft of the motor;
an idle pulley provided on the other side of the rail; and
a belt having a belt body having a belt portion and teeth, a core wire embedded in the belt body, and transmitting the driving force of the motor to the vanes; Dishwasher comprising a. 27. The method of claim 26,
The belt body is formed of a polyurethane (polyurethane) material, and the core wire includes an aramid fiber (aramid fiber). 27. The method of claim 26,
wherein the rail has a tubular shape having an inner space and a lower opening formed at a lower portion. 29. The method of claim 28,
wherein the belt is disposed in the inner space of the rail. 30. The method of claim 29,
The driving device may further include a belt holder coupled to a tooth of the belt and moving together with the belt in an inner space of the rail. 31. The method of claim 30,
The driving device further comprises a vane holder provided to surround the outer surface of the rail, coupled to the belt holder through the lower opening of the rail to move together with the belt holder, and to which the vane is coupled the dishwasher. main body;
a washing tank provided inside the body;
a fixed nozzle fixed to one side of the washing tank and spraying washing water;
a vane that moves inside the washing tank and reflects the washing water sprayed from the fixed nozzle toward the dishes; and
a driving device for driving the vanes; including,
The driving device is
a motor generating a driving force;
a rail for guiding the movement of the vane;
a belt having a belt body having a belt portion and teeth, a core wire embedded in the belt body, and transmitting the driving force of the motor to the vanes; and
a tension adjusting device for adjusting the tension of the belt; Dishwasher comprising a. 33. The method of claim 32,
The driving device is
a driving pulley provided on one side of the rail and connected to a driving shaft of the motor; and
Including; an idle pulley provided on the other side of the rail;
and the tension adjusting device includes an elastic member coupled to a rotation shaft of the idle pulley to press the idle pulley in a direction to apply tension to the belt. 33. The method of claim 32,
The driving device is
a driving pulley provided on one side of the rail and connected to a driving shaft of the motor; and
Including; an idle pulley provided on the other side of the rail;
and the tension adjusting device includes a position adjusting device for moving the idle pulley in a longitudinal direction of the rail. 35. The method of claim 34,
and the position adjusting device includes a slide member to which a rotation shaft of the idle pulley is coupled and movably provided in a longitudinal direction of the rail. 36. The method of claim 35,
and the position adjusting device includes an adjusting member for pressing the slide member to move the slide member. 37. The method of claim 36,
wherein the adjusting member includes a screw. 34. The method of claim 33,
and the tension adjusting device includes a pressing device for adjusting the tension of the belt by pressing an opposite surface of the toothed portion of the belt. 39. The method of claim 38,
and the pressing device includes a pressing member contacting an opposite surface of the toothed portion of the belt. 40. The method of claim 39,
and the pressing device includes a slide member to which the pressing member is coupled and provided to be movable in a direction perpendicular to the belt. 41. The method of claim 40,
and the pressing device includes an adjustment member for pressing the slide member to move the slide member. 42. The method of claim 41,
wherein the adjusting member includes a screw.

Images