KR20190104779A - Dish washer - Google Patents

Abstract

According to an embodiment of the present invention, a dishwasher comprises: a main body defining a dishwashing space; main body side rail parts formed on both sides of the dishwashing space; a door having a lower end hinged to the main body to open and close the dishwashing space by a rotation; an accommodation member provided in the dishwashing space and forming an accommodation space of dishware; and a plurality of wheels disposed on both sides of the accommodation member and spaced apart from each other in front and rear directions and moving along a rear surface of the main body side rail parts and the door when the accommodation member is pulled out. Among the plurality of wheels, some of the wheels are applied to a second type wheel is provided with a bearing on a rotation axis, the remaining wheels are applied to a first type wheel which generates greater internal friction force when rotating than the second type wheel.

Description

Dishwasher {Dish washer}

The present invention relates to a dishwasher.

Generally, it is a device that removes food or contaminants remaining in tableware by using high pressure washing water sprayed from the spray nozzle.

Dishwashers are being developed to combine various functions such as rinsing, disinfecting and cutting the dishes, and the demand is increasing.

The dishwasher may include a main body providing a washing space in which the dishes are located, a door for opening and closing the washing space, a sump provided in the lower portion of the washing tank and containing the washing water, and a spray nozzle positioned in the washing space.

In addition, the washing space may be provided with an accommodating member for storing dishes for washing, and the accommodating member may be provided to be withdrawn from the washing space. Therefore, the user can easily take out and collect dishes from the storage member by withdrawing the storage member from the washing space.

On the other hand, the door of the dishwasher may be provided so that the lower end is coupled to the rotation axis to the body, the upper end is rotated based on the lower end to open and close the washing space.

Then, the housing member is provided with a wheel can be withdrawn by the rolling motion of the wheel along the surface inside the washing space, the wheel is rolling along the back of the door in the open state, the support on the back of the door And may be provided to be drawn out.

The accommodating member, which is provided with wheels and draws in and out along the rear surface of the door, does not require a rail device for drawing in and out of the accommodating member, and thus, is easy to manufacture and prevents a waste of space for the provision of the rail device. .

Korean Patent Laid-Open Publication No. 10-2005-0123192, which is a prior art document, discloses a dish basket 54 in which a wheel 54c is installed at a lower portion thereof, and draws in and out along a rear surface of a door.

On the other hand, in the case of the housing member is provided with a wheel, the rolling motion of the wheel should be made so that it can be easily withdrawn with a small force when the user pulls.

To this end, conventionally, the wheel provided in the housing member is applied as a bearing wheel provided with a bearing on a rotating shaft so that the frictional force inside the wheel is minimized when the wheel is rotated.

However, when all of the wheels provided in the housing member are applied as bearing wheels, the wheel is easily rotated in a state in which the housing member is drawn out, so that the housing member is arbitrarily drawn in and is difficult to maintain the drawn state and is inconvenient in use. Will occur.

Accordingly, there is a need for a method in which the housing member can be prevented from being arbitrarily drawn in the drawn state while the housing member is easily drawn out with a small force.

The present invention is to provide a dish washer that can be easily withdrawn and withdrawn operation with a small force the wheel is provided.

The present invention provides a dishwasher which can be prevented from being arbitrarily drawn in a state in which an accommodating member provided with wheels is drawn out along a rear surface of a door.

Dishwasher according to an embodiment of the present invention, the main body to form a dish washing space; Main body side rail parts formed on both sides of the washing space; A door having a lower end hinged to the main body to open and close the washing space by a rotation; An accommodation member provided in the washing space and forming an accommodation space of the dishware; It is disposed on both sides of the housing member in front and rear spaced apart, a plurality of wheels to rotate and move along the back of the main body side rail and the door when the housing member is pulled out; includes, among the plurality of wheels, Is applied to the second type wheel is provided with a bearing on the rotating shaft, the remaining wheels is characterized in that applied to the first type wheel that generates greater internal friction force when rotating than the second type wheel.

The first type wheel may include: a first type shaft fixed to one side of the accommodation member and having a first type rotation shaft formed to protrude to the outside of the accommodation member; A shaft insertion opening is formed to insert the first type rotating shaft part, and the first type rotating shaft part is configured as a first rotating roller.

The second type wheel may include: a second type shaft fixed to one side of the receiving member and having a second type rotating shaft part protruding to the outside of the receiving member; A second type roller having a shaft insertion hole into which the second type rotating shaft part is inserted, and rotating the second type rotating shaft part as a rotating shaft; And a plurality of bearings disposed along a circumference of the second type shaft and in contact with the second type roller.

In addition, the second type wheel is coupled to the second type of rotating shaft portion, it characterized in that it comprises a guide for restraining the position of the plurality of bearings.

The guide may include: a guide body having a center opening so that the second type rotation shaft part is inserted; And a plurality of bearing restraints formed to be spaced apart along the circumference of the guide body and formed to surround the circumference of one of the bearings, respectively.

And, the guide is characterized in that formed of a rubber material.

The plurality of wheels may include a pair of front wheels positioned at the forefront at left and right sides of the accommodation member; A pair of rear wheels located rearward from both left and right sides of the housing member; And at least one pair of intermediate wheels positioned between the front wheels and the rear wheels on both left and right sides of the housing member.

A stopper protruding downwardly is provided at a rear end of the housing member, and a protruding jaw is formed in the door in contact with the stopper in a state in which the rear wheel is located at the rear of the door. It is characterized by.

And, the door, the outdoor to form a front appearance; A door liner coupled to the outdoor and forming a rear surface thereof, wherein the left and right sides of the door liner protrude and form a door side rail part to which the plurality of wheels move when the housing member is pulled out, and the protruding jaw Is formed in the lower end of the door liner adjacent to the washing space in the state that the door is open, characterized in that located between the door side rail portion of the left and right sides.

The pair of intermediate wheels of the plurality of wheels may be applied to the first type wheels, and the remaining wheels may be applied to the second type wheels.

The pair of middle wheels may include a pair of second row wheels; And a pair of third row wheels located behind the second row wheels, wherein the third row wheels are applied as the first type wheels, and the second row wheels, the front wheels, and the rear wheels are formed of the first row wheels. Characterized in that applied to the type 2 wheels.

The rear wheels are applied to the first type wheels, and the front wheels and the middle wheels are applied to the second type wheels.

And, the rear wheel is located in front of the stopper, is positioned adjacent to the stopper, characterized in that located in the lower end of the rear surface of the door adjacent to the washing space in the state in which the stopper and the protruding jaw contact.

According to the dishwasher according to the embodiment of the present invention, the following effects can be expected.

First, among the plurality of backhoes provided in the receiving member, some of them are applied to the second type wheels provided with bearings on the rotating shaft, and the other part is the first type wheels in which the internal frictional force is greater than the second type wheels. Apply. That is, the second type wheel and the first type wheel having a larger internal friction force than the second type wheel are applied together when the internal friction force is minimized during rotation.

Therefore, as the overall internal frictional force of the wheel is reduced by the second type wheel, the housing member can be easily drawn out even when the user pulls the housing member with a small force. In addition, when the housing member is drawn out, the housing member can be prevented from being arbitrarily drawn in by the first type wheel in which the internal frictional force is relatively large.

Secondly, a guide for restraining the positions of the plurality of bearings is provided between the rotating shaft portion of the second type wheel and the roller. At this time, the guide is formed of a rubber material.

Therefore, the position of the plurality of bearings is constrained by the configuration of the guide so that the plurality of bearings can be stably rotated at a specific position.

In addition, the guide is formed of a rubber material can be easily fitted and coupled to the rotating shaft portion can be easily assembled the second type wheels. In addition, shocks applied to the bearings can be buffered to allow smoother motion of the second type wheels. In addition, it is possible to effectively reduce the noise generated in contact with the bearing.

Third, a pair of intermediate wheels located between the front wheel and the rear wheel can be applied as the first type wheel. The middle wheel to which the first type wheel is applied may be located at an intermediate portion of the rear surface of the door in a state where the receiving member is completely drawn out.

Accordingly, the intermediate wheel to which the first type wheel is applied can continuously prevent the receiving member from being arbitrarily drawn in by the internal frictional force for a sufficient pulling distance. Therefore, the accommodation member can be effectively prevented from being drawn in arbitrarily.

Fourth, the rear wheel located at the rearmost part of the housing member may be applied as the first type wheel. At this time, the rear wheel is positioned in front of the stopper protruding from the rear end of the housing member and in contact with the lower surface of the door to limit the withdrawal distance of the housing member. Therefore, the rear wheel may be in a state where the rear wheel is located at the lower end of the rear surface of the door while the stopper is in contact with the bottom surface of the door and the receiving member is completely drawn out.

At this time, the rear wheels applied as the first type wheels are primarily prevented from being arbitrarily drawn in by the friction force therein while being seated on the rear surface of the door. And, even if the receiving member is arbitrarily drawn to the rear somewhat, since it is located close to the main body side rail portion, it is in contact with the main body side rail portion quickly to be able to prevent the secondary member as soon as possible to arbitrarily pull the housing member.

1 is a cross-sectional view schematically showing an internal configuration of a dish washer according to an embodiment of the present invention.
Figure 2 is a perspective view showing an open state of the door of the dishwasher according to an embodiment of the present invention.
3 is a perspective view illustrating a state in which the housing member is drawn out from FIG. 2.
4 is a side view of the housing member drawn out along the rear surface of the door according to the embodiment of the present invention as viewed from the side.
5 is a view showing a state in which the first type wheel according to an embodiment of the present invention is mounted on the receiving member.
6 is a view showing a state in which the first type wheel is removed according to an embodiment of the present invention.
7 is a cross-sectional view of a first wheel according to an embodiment of the present invention.
8 is an exploded perspective view of a first wheel according to an embodiment of the present invention.
9 is a view showing a state in which the second type wheel is mounted on the housing member according to an embodiment of the present invention.
10 is a cross-sectional view of a second type wheel according to an embodiment of the present invention.
11 is an exploded perspective view of a second type wheel according to an embodiment of the present invention.
FIG. 12 is a view showing a state in which an accommodating member including a first wheel and a second wheel according to the first embodiment of the present invention is drawn out.
FIG. 13 is a view showing a state in which an accommodating member including a first wheel and a second wheel according to a second embodiment of the present invention is drawn out.

Hereinafter, specific embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the present invention is not limited to the embodiments in which the spirit of the present invention is presented. Other embodiments within the spirit or scope of the present invention can be easily proposed.

1 is a cross-sectional view schematically showing the internal configuration of the dishwasher according to an embodiment of the present invention, Figure 2 is a perspective view showing an open state of the door of the dishwasher according to an embodiment of the present invention, Figure 3 is FIG. Is a perspective view showing a state in which the housing member is drawn out.

The dishwasher 1 may include a main body 10 forming an exterior and forming a washing space 11 opening forward, and a door 20 opening and closing the opened front surface of the washing space 11.

The door 20 may have a lower end hinged to the main body 10 so that the upper end is rotated based on the lower end.

The dishwasher 1 may include a control panel 30 for displaying and controlling the operation of the dishwasher. The control panel 30 may be provided at the front upper end of the door 20 or may be provided at one side of the main body 10.

When the control panel 30 is provided in the door 20, the control panel 30 has a power switch for turning on / off the power of the dishwasher, a door handle for opening and closing the door 20, Function operation unit for controlling the operation of the dishwasher, a display for displaying the operation state of the dishwasher may be included.

Inside the main body 10, a washing tank 12 to form a washing space 11 is placed, the lower side of the washing tank 12 is provided with a sump (13) to collect the washing water and to filter the foreign matter to be sprayed again Can be.

An interior of the washing tank 12 may be provided with an accommodating member 50 that accommodates dishes for washing. The receiving member 50 may be provided in plurality, and may be spaced apart vertically.

A plurality of nozzles 14, 15, and 16 for spraying the washing water toward the accommodating member 50 may be provided in the washing tank 12. The plurality of nozzles 14, 15, and 16 may be connected to a pipe extending from the sump 13.

A filter 17 may be provided below the washing tank 12 to filter foreign matter from the washing water passing through the filter 17.

The dishwasher 1 includes a water supply pipe 18 connecting the washing tank 12 and the outside of the dish washing machine to supply water to the inside of the washing tank 12, and draining the washing water contaminated by washing. It may include a drain pipe (19).

On the other hand, the dishwasher 1 is disposed below the washing tank 12, the steam generator 40 for generating steam, so that the steam generated from the steam generator 40 is supplied into the washing tank 12 It may include a guide steam supply pipe 41, the steam supply pipe 41 and the steam discharge section 42 for discharging steam into the washing tank 12.

On the other hand, the accommodating member 50 is mounted to the rail device which is mounted in the washing tank 12 and extends in multiple stages, and is provided to be withdrawn from the washing space 11 by the operation of the rail device. Can be.

Alternatively, the housing member 50 may be provided to be withdrawn from the rail by the rolling motion of the wheel from the washing space 11 is provided with a separate wheel.

Alternatively, when the housing member 50 is provided in plural, some may be mounted to the rail device, and some may be provided with separate wheels.

The storage member 50 having a separate wheel may be provided at a lower portion of the washing tank 12, and is drawn out along the rear surface of the door 20 at the time of withdrawal, and the door 20 at the time of withdrawal. It can be supported by.

Hereinafter, the wheel is provided to be described in detail with respect to the receiving member 50 is drawn along the rear surface of the door 20.

The accommodation member 50 may be configured by a plurality of wires 51 to allow the passage of the washing water.

In detail, the accommodating member 50 may have a basket shape having an upper surface opened, and may have a lower surface and a circumferential surface. In this case, the lower surface and the circumferential surface of the housing member 50 may be connected to each other so that the wires 51 have a lattice shape. Therefore, a space is formed between the plurality of wires 51, and the washing water may pass through the lower surface and the circumferential surface of the accommodating member.

That is, the housing member 50 may be formed by connecting the plurality of wires 51 to form a grid shape and forming a basket shape.

The interior of the housing member 50 may be divided into various types of spaces to accommodate various dishes. In addition, an auxiliary storage member 60 may be further provided in the accommodation member 50 to separately accommodate small dishes such as a cutlery.

On the other hand, the housing member 50, a plurality of wheels 200 for supporting the housing member 50 may be provided.

The plurality of wheels 200 may be provided as a plurality of pairs symmetrically disposed on both side surfaces of the accommodation member 50. The plurality of pairs of wheels 200 may be spaced apart from the front and rear sides along the side surface of the accommodating member 50, and at least one pair may be disposed at the front end and the rear end of the accommodating member 50. . Thus, the storage member 50 can be stably supported without inclination.

The plurality of wheels 200 are moved along the wheel guide part 120 formed in the washing tank 12 in the washing space 11, and the door (outside the washing space 11). 20 can be moved along the back side.

In detail, wheel guides 120 protruding inward may be formed at lower ends of both sides of the washing space 11. The wheel guide portion 120 may be formed to extend in the front and rear direction on both sides of the washing space 11, it may extend from the front end to the rear end of the washing space (11).

The wheel guide part 120 includes a main body side rail part 121 on which the wheel 200 is seated and moved, and a departure prevention part 122 spaced upwardly from the main body side rail part 121. can do.

The wheel 200 is inserted into a space between the main rail side 121 and the departure prevention part 122 when the housing member 50 is retracted, and rolls along the upper surface of the main rail side 121. You can exercise. In addition, the separation of the upper portion is prevented by the separation preventing part 122, the withdrawal of the storage member 50 can be made stable.

On the other hand, the door 20 may be fixed in a state in which the rear surface is horizontal to the bottom surface in the open state. The rear surface of the door 20 may be positioned at the same height as the upper surface of the main body side rail part 121 and may be positioned on the same plane.

On the rear surface of the door 20, a door side rail part 21 to which the wheel 200 moves may be formed. The door side rail part 21 may be formed at both left and right rear ends of the door 20, and may be formed to be elongated in a direction in which the accommodating member 50 moves along the rear surface of the door 20. .

The door side rail part 21 may be formed to protrude a predetermined height upward so that a part of the wheel 200 moves along an inner side surface thereof.

The plurality of wheels 200 may be in a state in which all the receiving members 50 are completely seated on the upper surface of the main body side rail part 121 in a state where the receiving member 50 is completely inserted into the washing space 11. In addition, when the housing member 50 is pulled out, it may be moved along the upper surface of the main rail side 121 to move forward. In addition, the wheels located in close proximity to the door 20 may be sequentially positioned on the door side rail part 21 to be moved along the rear surface of the door 20.

4 is a side view of the housing member drawn out along the rear surface of the door according to the embodiment of the present invention as viewed from the side.

On the rear side of the accommodating member 50, a stopper 52 for limiting a withdrawal distance of the accommodating member 50 may be provided.

The stopper 52 may protrude downward from the rear end of the accommodation member 50, and may further protrude downward from the bottom surface of the accommodation member 50. In this case, the stopper 52 may be formed by protruding a portion of the wire 51 downward from the lower surface of the accommodating member 50.

The stopper 52 may be formed by protruding a portion of the wire 51 downward from the lower surface of the accommodating member 50.

The stopper 52 may be in contact with one side of the door 20 in a state where the accommodating member 50 is completely drawn out, so that the withdrawal of the accommodating member 50 may be restricted.

In the open state of the door 20, a protruding jaw 27 protruding upward may be formed at one end of the door 20 adjacent to the cleaning space 11. That is, the protruding jaw 27 may be formed at the lower end of the rear surface of the door 20. The stopper 52 may be in contact with the protruding jaw 27 when the withdrawal of the accommodating member 50 is restricted.

The protruding jaw 27 may be located between the pair of door side rail parts 21 formed on the left and right sides of the door 20, and is arranged in line with the rear end of the pair of door side rail parts 21. It can be located at.

In addition, the stopper 52 may be positioned between the wheels 200 positioned at both left and right sides of the accommodation member 50, and may be positioned to correspond to the protruding jaw 27.

In more detail, the door 20 includes an outdoor 25 forming a front appearance of the door, and a door liner 26 coupled to the outdoor 25 and forming a rear surface of the door 20. It may include.

The door side rail part 21 may be formed at both left and right ends of the door liner 26. The protruding jaw 27 may be formed at a lower end of the door liner 26 adjacent to the cleaning space 11 in the state in which the door 20 is opened.

On the other hand, a gasket 22 may be provided on one surface of the protruding jaw 27 in contact with the stopper 52. The gasket 22 may be formed of a rubber material. Therefore, when the stopper 52 and the gasket 22 are in contact with each other, the shock may be alleviated and noise may be effectively prevented.

The gasket 22 may be provided along the circumference of the door 20 in addition to the protruding jaw 27 in contact with the stopper 52. In addition, in contact with the main body 10 in a state where the door 20 is closed, airtightness may be provided so that washing water is not counted.

Meanwhile, the plurality of wheels 200 may be detachably mounted to the accommodation member 50.

On the other hand, of the plurality of wheels 200, some of the wheels 200 may be applied to the first type wheel 300 is not provided with a ball bearing, the other wheel 200 is a second type provided with a ball bearing It may be applied to the wheel (400).

That is, the plurality of wheels 200 may include the first type wheel 300 and the second type wheel 400.

The first type wheel 300 and the second type wheel 400, the structure for detachable to the receiving member 50 may be equally applied.

Hereinafter, the structure and arrangement of the first type wheel and the second type wheel will be described in detail with reference to the drawings.

5 is a view showing a state in which the first type wheel according to an embodiment of the present invention is mounted on the receiving member, Figure 6 is a view showing a state in which the first type wheels according to the embodiment of the present invention is removed, Figure 7 is a cross-sectional view of a first type wheel according to an embodiment of the present invention, Figure 8 is an exploded perspective view of the first type wheel according to an embodiment of the present invention.

The accommodation member 50 may be provided with a plurality of wheel mounting parts 53 on which the plurality of wheels 200 are mounted. The wheel mounting portion 53 may be formed at both lower ends of the accommodating member 50, and may be disposed in plural numbers spaced apart from each other.

The wheel mounting portion 53 may be formed by an end of the wire 51. In detail, some of the plurality of wires 51 may extend downward from the lower side of the side of the receiving member 50 and then bend outward to protrude to form the wheel mounting portion 53.

The wheel mounting portion 53 may include a first portion 531 extending downward from a lower side of the side of the receiving member 53, and a second portion 532 bent outwardly from a lower end of the first portion 531. It may include.

Of course, the wheel mounting portion 53 is not formed by the wire 51, it is coupled to the receiving member 50 and at least a portion formed to protrude outward from the side of the receiving member 50 It may be formed by the member.

The first type wheel 300 may include a shaft 310 fixed to the wheel mounting unit 53 and a roller 320 rotatably coupled to the shaft 310.

The shaft 310 has a rotation shaft portion 311 in which the second portion 532 is inserted and forms a rotation shaft of the roller 320, and is formed perpendicular to the rotation shaft of the roller 320. ) May include a fixing part 314 fixed to the first part 531 to prevent rotation thereof.

In detail, the rotation shaft 311 may be formed in a substantially cylindrical shape, and the second portion 532 may be inserted into an insertion hole 313 formed at the center of the rotation shaft 311.

The fixing part 314 may extend vertically at one end of the rotation shaft part 311. In this case, the fixing part 314 may extend perpendicular to the portion of the second portion 532 and may extend in parallel with the first portion 531.

The fixing part 314 may be formed with a restraining part 315 for restraining the first part 531. The restraining part 315 may be formed to surround at least half of the circumference of the first part 531, and may be formed to be inserted into the first part 531 by elastic deformation.

The roller 320, the outer peripheral surface may be formed in a stepped structure.

In detail, the roller 320 includes a rolling part 321 having an outer circumferential surface moving along an upper surface of the main body side rail part 121 and the door side rail part 21, and an inner side of the rolling part 321. Is formed in and may include a guide portion 322 having a larger outer diameter than the cloud portion 321.

The guide part 322 may move along the inner surfaces of the main body side rail part 121 and the door side rail part 21, and may guide the moving direction of the rolling part 321. Therefore, the cloud portion 321 can be prevented from being separated from the upper surface of the main body side rail portion 121 and the door side rail portion 21.

In the center of the roller 320, a shaft insertion hole 323 into which the rotary shaft portion 311 is inserted may be formed. Therefore, the roller 320 may be rotated using the rotating shaft portion 311 as the rotating shaft.

Meanwhile, a hook 312 may be provided at an end portion of the rotation shaft part 311 inserted into the shaft insertion hole 323 to prevent the roller 320 from being removed.

The hook 312 may be formed to protrude outward from the end of the rotating shaft portion 311, and a plurality of the hooks 312 may be spaced apart along the circumference of the rotating shaft portion 311. And, the space between the spaced to be elastically deformable is cut, so that the rotary shaft portion 311 can be inserted into the shaft insertion hole 323 by the elastic deformation.

In addition, a hook locking step 324 to which the hook 312 is locked may be formed inside the shaft insertion hole 323. The hook catching jaw 324 may be formed to be stepped outward from the inner circumferential surface of the shaft insertion hole 323.

Hereinafter, the second type wheel 400 will be described in detail with reference to the drawings, and the same name will be used for a component having the same function as the first type wheel 300.

9 is a view showing a state in which the second type wheel according to an embodiment of the present invention is mounted on the receiving member, Figure 10 is a cross-sectional view of the second type wheel according to an embodiment of the present invention, Figure 11 is a view of the present invention An exploded perspective view of the second type wheel according to the embodiment.

The second type wheel may include a shaft 410 fixed to the wheel mounting unit 53, a roller 420 rotatably coupled to the shaft 410, and between the shaft 410 and the roller 420. It may be provided with a bearing 440 to reduce the friction force, a guide 430 for fixing the position of the bearing 440.

The shaft 410 is a rotation shaft portion 411 is inserted into the second portion 532 and forms a rotation axis of the roller 420, and is formed perpendicular to the rotation axis of the roller 420 and the shaft 410 It may include a fixing part 414 is fixed to the first portion 531 so that is not rotated.

In detail, the rotating shaft portion 411 may be formed in a substantially cylindrical shape, the second portion 532 may be inserted into the insertion hole 413 formed in the center of the rotating shaft portion 411.

The fixing part 414 may extend vertically at one end of the rotation shaft part 411. In this case, the fixing part 414 may extend perpendicular to the second part 532 and may extend in parallel with the first part 531.

In the fixing part 414, a restraining part 415 may be formed to restrain the first part 531. The restraining part 415 may be formed to surround at least half of the circumference of the first part 531, and may be formed to be inserted into the first part 531 by elastic deformation.

The roller 420 may have an outer circumferential surface with a stepped structure.

In detail, the roller 420 may include a rolling part 421 having an outer circumferential surface moving along an upper surface of the main body side rail part 121 and the door side rail part 21, and an inner side of the rolling part 421. It may include a guide portion 422 formed in the having a larger outer diameter than the cloud portion 421.

The guide part 422 may move along the inner surfaces of the main rail side 121 and the door side rail part 21, and may guide a moving direction of the rolling part 421. Therefore, the cloud portion 421 can be prevented from deviating from the upper surface of the main body side rail portion 121 and the door side rail portion 21.

The center of the roller 420 may be opened so that the rotation shaft portion 411 is inserted. That is, the roller 420 may be formed in a substantially ring shape. Accordingly, the roller 420 may be rotated by using the rotation shaft 411 inserted into the opening as the rotation shaft.

On the other hand, on the inner circumferential surface of the roller 420, a second bearing receiving portion 423 recessed so that the bearing 440 is located may be formed.

The second bearing receiving portion 423 may be recessed along the inner circumferential surface of the roller 420, and may be formed to have a size that can accommodate a portion of the bearing 440.

In the rotation shaft 411, a first bearing accommodating portion 412 recessed to position the bearing 440 may be formed at a position corresponding to the second bearing accommodating portion 423.

The first bearing accommodating part 412 may be recessed along a circumference of the outer circumferential surface of the rotating shaft part 411, and may be formed to have a size to accommodate a portion of the bearing 440.

The bearing 400 may be located between the roller 420 and the rotation shaft 411 and may be wrapped and constrained in the second bearing accommodation portion 423 and the first bearing accommodation portion 412. have.

The bearing 400 may be provided in plurality along the circumference of the rotating shaft portion 411. The plurality of bearings 400 are constrained between the first bearing receiving portion 412 and the second bearing receiving portion 423 to rotate when the roller 420 rotates, such that the roller 420 is at least rotated. It can be rotated smoothly with the friction of.

The plurality of bearings 400 may be spaced apart from each other along the circumference of the rotating shaft portion 411 to be fixed in position. To this end, the guide 430 may be provided between the rotation shaft 411 and the roller 420.

The guide 430 may be formed in a substantially ring shape, and may be disposed between the roller 420 and the rotation shaft part 411. And, it may be fitted to the rotary shaft portion 411.

In more detail, the guide 430 may include a ring-shaped guide body 431 having an inner diameter corresponding to the outer diameter of the rotating shaft 411 so that the guide 430 may be fitted to the rotating shaft 411.

In addition, a plurality of bearing restraints 432 may be formed in the guide body 431 along a circumference. The opening of the bearing restraint portion 432 may be formed to be equal to the number of the bearings 440.

The plurality of bearing restraints 432 may be open upward and downward and may be formed thinner than the height of the bearing 440 such that upper and lower portions of the bearing 440 are led upward and downward. In addition, some regions may be formed to be open to the side so that the bearing 440 may be inserted from the side.

The plurality of bearing restraints 432 may be formed to be spaced apart from each other along the circumference of the guide body 431. In addition, one of the bearing restraints 432 may be formed to surround at least a circumference of one bearing 440. At this time, the bearing restraint portion 432 may be formed to wrap more than half of the circumference of the bearing 440 in order to secure a stable position of the bearing 440.

On the other hand, the bearing restraint portion 432 may be formed in a size that a predetermined separation space is formed between the bearing 440, so that it can be rotated inside the bearing 440.

Referring to FIG. 10, in a state where the rotating shaft part 411 is inserted into the opening of the roller 420, the bearing 400 may include the first bearing receiving part 412 and the second bearing receiving part 423. ) Will be in a confined state.

At this time, a part of the bearing 400 is in a state surrounded by the first bearing accommodating part 412, and a part of the opposite position is enclosed by the second bearing accommodating part 423. do.

In addition, the guide 430 may be coupled to an outer end of the rotation shaft 411 and may be spaced apart from the roller 420. In addition, the plurality of bearing restraints 432 of the guide 430 may be located in an area between the first bearing accommodating part 412 and the second bearing accommodating part 423.

In addition, the plurality of bearing restraints 432 of the guide 430 may surround the central portion of one bearing 440 so that the position of the bearing 440 may be fixed.

Therefore, the bearing 440 may be provided to be rotatable at specific positions spaced apart from each other along the circumference of the rotating shaft 411. In addition, the roller 420 may be rotated when the roller 420 is rotated to smoothly rotate the roller 420 with a small frictional force.

On the other hand, the guide 430 may be formed of an elastically deformable material, for example, may be formed of a rubber material.

Therefore, the guide 430 can be easily fitted and coupled to the rotation shaft 411, so that the assembly of the second type wheel 400 can be facilitated. In addition, while restraining the positions of the plurality of bearings 440, the shock applied to the bearings 440 may be buffered to allow a smoother operation of the second type wheel 400. In addition, the noise generated when contacting the bearing 440 may be reduced.

Hereinafter, arrangement characteristics of the first type wheel 300 and the second type wheel 400 on the housing member 50 will be described in detail with reference to the accompanying drawings.

FIG. 12 is a view showing a state in which an accommodating member including a first wheel and a second wheel according to the first embodiment of the present invention is drawn out.

The housing member 50 may be provided with a plurality of wheels 200 on both left and right sides, and the left and right wheels 200 may be arranged in the same number, and may be arranged to be symmetrical with each other.

For example, the accommodation member 50 may be provided with at least two pairs of wheels 200 on both the left and right sides for horizontal movement of the accommodation member 50.

On the other hand, between the door side rail portion 21 and the main body side rail portion 121, as the door 20 is rotated based on the front lower end, a predetermined distance may occur. In this case, it may be preferable that at least three pairs or more of wheels 200 are provided at the left and right sides in order to horizontally move the accommodation member 50. That is, even if the pair of wheels 200 are located in the space between the door side rail part 21 and the main body side rail part 121, since two or more pairs of wheels 200 are located in the rail parts 21 and 121, The accommodation member 50 may maintain a horizontal state.

Hereinafter, the storage member 50 will be described in detail with an example in which four pairs of wheels 200 are provided at both left and right sides thereof. Of course, the present invention is not limited to being provided with four pairs of wheels 200 in the receiving member 50, it will be applicable to the receiving member 50 is provided with a plurality of pairs of wheels.

The storage member 50, four pairs of wheels 200 may be provided symmetrically on both sides. In this case, the four pairs of wheels 200 may be divided into a first row wheel, a second row wheel, a third row wheel, and a fourth row wheel according to a position disposed from the front end of the accommodation member 50. have.

The first row wheels may be defined as wheels 200 located closest to the front end of the housing member 50, and the second row wheels may be located immediately after the first row wheels 200. ), And the third row wheels may be defined as wheels 200 located immediately after the second row wheels, and the wheels 200 located immediately after the third row wheels. Can be defined.

The first to fourth row wheels may be named as front wheels, the second and third row wheels may be referred to as middle wheels, and the fourth row wheels may be referred to as relative wheels. Ten wheels can be named rear wheels.

The first row wheels may be positioned to be adjacent to the front end of the housing member 50, and the fourth row wheels may be positioned to be adjacent to the rear end of the housing member 50.

The first to fourth row wheels in a state where the accommodating member 50 is completely drawn out, that is, when the stopper 52 contacts the lower surface of the door 20 and the extraction of the accommodating member 50 is completed. All may be located in the door side rail portion 21.

In this case, the fourth row wheels may be located in front of the spotter 52 but adjacent to the spotter 52, and may be located at the rear end of the door-side rail part 21.

On the other hand, the fourth row wheels located in the rearmost, the first type wheel 300 may be applied. In addition, the second wheels 400 may be applied to the first to third row wheels positioned in front of the fourth row wheels.

The second type wheel 400 is a wheel provided with a bearing, and has less internal friction when rotating than the first type wheel 300.

On the other hand, the first type wheel 400 is a wheel that is not provided with a bearing, the internal frictional force is generated relatively large when rotating compared to the second type wheel 400 to help the movement of the receiving member 50, It may provide a brake function to reduce the moving speed of the housing member 50.

As the first to third row wheels are applied to the second type wheels 400, the housing member 50 has the main rail side 121 and the door side rail part by a user pulling force. Along with 21) it can be easily withdrawn with little force.

On the other hand, the fourth row wheel located at the rear end is applied to the first type wheel 300, so that the housing member 50 is moved arbitrarily with a relatively high internal friction force in the state in which the housing member 50 is drawn out It can provide the function of fixing it.

In detail, the fourth row wheel is in a state located at a rear end of the door side rail part 21 in a state where the accommodating member 50 is completely drawn out, and the accommodating member 50 is formed by an internal frictional force. Can be prevented primarily from drawing arbitrarily.

When the fourth row wheel is in contact with the main body side rail part 121 even when the housing member 50 is arbitrarily drawn to the rear, an internal frictional force of the fourth row wheel is generated to generate the housing member 50. ) Can be secondarily prevented from entering arbitrarily.

That is, the second type wheel 400 allows the user to easily withdraw the accommodating member 50 with a small force, and the accommodating member 50 is arbitrarily selected by the wheel of the first type wheel 300. Pulling in can be prevented.

FIG. 13 is a view showing a state in which an accommodating member including a first wheel and a second wheel according to a second embodiment of the present invention is drawn out.

The storage member 50, four pairs of wheels 200 may be provided symmetrically on both sides. In this case, the four pairs of wheels 200 may be divided into a first row wheel, a second row wheel, a third row wheel, and a fourth row wheel according to a position disposed from the front end of the accommodation member 50. have.

The first row wheels may be defined as wheels 200 located closest to the front end of the housing member 50, and the second row wheels may be located immediately after the first row wheels 200. ), And the third row wheels may be defined as wheels 200 located immediately after the second row wheels, and the wheels 200 located immediately after the third row wheels. Can be defined.

The first row wheels may be positioned to be adjacent to the front end of the housing member 50, and the fourth row wheels may be positioned to be adjacent to the rear end of the housing member 50.

The first to fourth row wheels in a state where the accommodating member 50 is completely drawn out, that is, when the stopper 52 contacts the lower surface of the door 20 and the extraction of the accommodating member 50 is completed. All may be located in the door side rail portion 21.

In this case, the fourth row wheels may be located in front of the spotter 52 but adjacent to the spotter 52, and may be located at the rear end of the door-side rail part 21.

Meanwhile, the first type wheel 300 may be applied to one of the second row wheels and the third row wheels positioned between the first row wheels and the fourth row wheels. The second row of wheels 400 may be applied to the remaining rows of wheels.

For example, the first row wheel 300 may be applied to the third row wheel, and the second row wheel 400 may be applied to the first row wheel, the second row wheel, and the fourth row wheel.

The second type wheel 400 is a wheel provided with a bearing, and has less internal friction when rotating than the first type wheel 300.

On the other hand, the first type wheel 400 is a wheel that is not provided with a bearing, the internal frictional force is generated relatively large when rotating compared to the second type wheel 400 to help the movement of the receiving member 50, It may provide a brake function to reduce the moving speed of the housing member 50.

The first row, the second row, and the fourth row of wheels are applied to the second wheels 400, so that the housing member 50 is pulled by the user, and the main body side rail part 121 and the The door-side rails 21 can be easily pulled out with little force.

On the other hand, the third row of wheels is applied to the first type wheel 300, the function of fixing the housing member 50 is not moved arbitrarily with a relatively high internal friction force in the state in which the housing member 50 is drawn out Can be provided.

In detail, the third row of wheels is in a state of being positioned in the door side rail part 21 in a state where the accommodating member 50 is completely drawn out, and the accommodating member 50 is randomly secured by internal frictional force. It can prevent the incoming.

That is, the user can easily withdraw the accommodating member 50 with a small force by the second type wheel 400, and the user's force does not work by the wheel of the first type wheel 300. In the receiving member 50 can be prevented from being arbitrarily drawn.

Claims (13)

A main body defining a dish washing space;
Main body side rail parts formed on both sides of the washing space;
A door having a lower end hinged to the main body to open and close the washing space by a rotation;
An accommodation member provided in the washing space and forming an accommodation space of the dishware;
A plurality of wheels disposed on both sides of the accommodation member in a front and rear direction and moving along the rear surface of the main rail and the door when the housing member is pulled out;
Among the plurality of wheels, some of the wheels are applied to the second type wheel is provided with a bearing on the rotation axis, the remaining wheels are applied to the first type wheel that generates greater internal friction force when rotating than the second type wheel A dishwasher characterized by the above. The method of claim 1,
The first type wheel,
A first type shaft fixed to one side of the receiving member and having a first type rotating shaft protruding outward of the receiving member;
And a shaft insertion opening into which the first type rotating shaft part is inserted, and configured by a first type roller rotating the first type rotating shaft part as a rotating shaft. The method of claim 2,
The second type wheel,
A second type shaft fixed to one side of the receiving member and having a second type rotating shaft protruding to the outside of the receiving member;
A second type roller having a shaft insertion hole into which the second type rotating shaft part is inserted, and rotating the second type rotating shaft part as a rotating shaft;
And a plurality of bearings disposed along a circumference of the second type shaft and in contact with the second type roller. The method of claim 3, wherein
The second type wheel,
Is coupled to the second type of rotating shaft, dishwasher comprising a guide for restraining the position of the plurality of bearings. The method of claim 4, wherein
The guide,
A guide body whose center is opened so that the second type rotation shaft part is inserted;
And a plurality of bearing restraints formed to be spaced apart along the circumference of the guide body, the bearing restraints being formed to surround one of the bearings, respectively. The method of claim 4, wherein
The guide is dishwasher, characterized in that formed of a rubber material. The method of claim 3, wherein
The plurality of wheels,
A pair of front wheels positioned at the forefront at both left and right sides of the housing member;
A pair of rear wheels located rearward from both left and right sides of the housing member;
And at least one pair of intermediate wheels positioned between the front wheel and the rear wheel at both left and right sides of the housing member. The method of claim 7, wherein
The rear end of the receiving member is provided with a stopper protruding downward,
And a protruding jaw formed in the door to contact the stopper in a state where the rear wheel is located at the rear surface of the door to limit the extraction of the storage member. The method of claim 8,
The door is
Outdoor forming a front appearance;
And a door liner coupled to the outdoor and forming a rear surface thereof.
On both the left and right sides of the door liner, a door side rail part protruding from the housing member is formed to protrude from the drawing member,
The protruding jaw is formed in the lower end of the door liner adjacent to the washing space in the state that the door is opened, the dishwasher, characterized in that located between the door side rail portion of the left and right sides. The method of claim 8,
A pair of intermediate wheels of the plurality of wheels is applied to the first type wheels,
And the remaining wheels are applied to the second type wheels. The method of claim 8,
The one or more pair of intermediate wheels,
A pair of second row wheels;
And a pair of third row wheels located behind the second row wheels.
The third row wheels are applied to the first wheels,
And the second row wheels, the front wheels, and the rear wheels are applied to the second type wheels. The method of claim 8,
The rear wheel is applied to the first wheel,
The front wheel and the middle wheel is a dish washer, characterized in that applied to the second type wheel. The method of claim 12,
The rear wheel is located in front of the stopper, is disposed adjacent to the stopper, the dishwasher, characterized in that located in the lower end of the rear surface of the door adjacent to the washing space in the state in which the stopper and the protruding jaw contact.

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