KR20180138082A - drawer and refrigerator with drawer - Google Patents

Abstract

The present invention relates to a drawer and a refrigerator with the drawer, in which at least a part of a drawer may be automatically lifted by a user′s manipulation. The drawer includes: an outer storage part drawn into and out of a cabinet; an inner storage part lifted inside the outer storage part; a drawing unit provided inside the cabinet to make the outer storage part drawn in and out; and a lifting unit for lifting the inner storage part inside the outer storage part.

Description

Drawer and refrigerator with drawer [0002]

The present invention relates to a refrigerator having a drawer device and a drawer device.

2. Description of the Related Art Generally, a refrigerator is a household appliance that allows food to be stored at a low temperature in an internal storage space that is shielded by a door. The refrigerator is stored by cooling the inside of the storage space using cool air generated through heat exchange with a refrigerant circulating in a refrigeration cycle It is configured to store foods in optimal condition.

Such a refrigerator has been becoming larger and multifunctional as the dietary life changes and users' preferences become diverse, and a refrigerator having various structures and convenience devices for convenience of users and freshness of stored food is being released.

Typically, a drawer may be provided in the high-density space to be capable of being drawn out. The drawer can store foods requiring separate storage such as vegetable fruits, and the inside of the drawer can be opened or closed by a user's pulling-out operation.

When the drawer is provided at the lower end of the interior space, the user has to squat or hold his / her back in order to store the food in the drawer, and the draw-in / out operation is also not easy.

For convenience of user's use, Korean Patent Laid-Open No. 10-2009-003332 discloses a refrigerator to which a drawer structure capable of being automatically drawn out is applied. Korean Patent Laid-Open Publication No. 10-2004-0093111 discloses a refrigerator to which a drawer structure capable of automatically elevating is applied.

However, such conventional techniques have a disadvantage that there are still inconveniences in use because the draw-out and lift-up structures are separately formed.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a drawer device and a refrigerator equipped with a drawer device which can automatically perform drawing and pulling of a drawer.

SUMMARY OF THE INVENTION An object of the present invention is to provide a drawer device and a refrigerator equipped with a drawer device which can be automatically carried out by one operation of drawing and lifting of a drawer.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a drawer device and a refrigerator having a drawer window so that at least a part of a drawer to be drawn in and out can be automatically lifted and lowered by a user's operation.

The drawer unit according to an embodiment of the present invention includes an external storage unit forming a space having an opened upper surface and being drawn in and out of the cabinet; An inner storage unit that forms at least a part of a bottom surface of the storage space inside the outer storage unit and that is raised and lowered; A draw-in / out unit provided on the inside of the cabinet for drawing out the external storage unit; And an elevating unit which is operated after completion of withdrawal of the external storage unit by the draw-in / eject unit, and which raises and lowers the inside storage unit inside the external storage unit.

The drawing input unit includes: a motor mounted inside the cabinet; A shaft that is rotated by the motor and extends to the inside of the external storage portion; And a bracket module which is reciprocated along the thread of the shaft and is engaged with the external housing part. At least a part of the module bracket flows into the inside of the external housing part to operate the elevating unit.

The bracket module includes: a first bracket that forms an outer surface of the bracket module and is fixedly coupled to an opening of a back surface of the external storage part; And a second bracket attached to the shaft to move in and out of the hollow of the first bracket and to push and operate the elevating unit through the opening.

A ball receiving portion formed to be inclined so as to selectively receive the ball is formed on the hollow inner side surface of the first bracket, And the second bracket can be selectively separated from the first bracket according to the restraint of the ball.

Wherein the elevating unit includes a pair of supporting members that are axially coupled to each other so as to be rotatable with respect to each other, the upper end supports the inner accommodating portion, and the lower end supports the outer accommodating portion, So that the height of the inner receiving portion can be adjusted.

And a roller for smoothly rotating the support member may be provided at an end of the support member.

The draw-in / take-in unit includes: a rack member which is disposed on both sides of the external storage portion and extends in a pull-out direction of the external storage portion; A pinion rotating along the rack member; It is possible to include a take-out input motor that provides rotational power to the pinion.

The elevation unit includes a pair of support members having a plurality of rotatable link structures, an upper end supporting the inner accommodating portion and a lower end supporting the outer accommodating portion; A shaft connecting the pair of support members and adjusting a height of the pair of support members threaded by normal rotation; And the elevating motor for rotating the shaft, wherein the elevating motor can start its operation in a state in which the external housing part is completely drawn out by driving the drawing-out motor.

The drawing input unit includes: a motor; A motor gear rotated by an axis of the motor; A drive shaft extending parallel to an axis of the motor; A driving gear provided on the driving shaft and selectively connected to the motor gear to transmit power to the driving shaft; A pinion provided on the drive shaft and rotated together with the drive shaft, the pinion being moved along the draw-in / out guide; A clutch disposed slidably along the drive shaft and selectively transmitting the rotational force of the motor to the pinion; And a stopper that is formed of a metal material on one side of the clutch and that moves the clutch by a magnet provided on the outgoing inlet guide. The gear is formed with a gear portion, It is possible to selectively engage with a transmission gear for transmitting power to the elevating unit.

Wherein the motor gear includes a first motor gear and a second motor gear which are disposed on an axis of the motor, the driving gear includes a first driving gear which is disposed on the driving shaft and rotates together with the pinion, And a second drive gear rotated together with the clutch, wherein the first motor gear is engaged with the first drive gear and the second motor gear is engaged with the second drive gear according to the movement of the clutch .

Wherein the drive shaft has a polygonal cross sectional shape and includes a first drive portion mounted with the first drive gear and rotated together with the drive shaft by a driving force of the motor, And a second driving unit that can rotate independently of the driving shaft.

The stopper may be provided with an elastic member for elastically supporting the gear motor and the driving motor so as to return to their original engagement position.

The magnet may be provided at one point of the outgoing inlet guide corresponding to the position of the clutch with the outer housing part completely drawn out.

The clutch includes a first clutch formed with the gear portion to be engaged with the transmission gear, and a second clutch coupled to the stopper and selectively connected to the first clutch, wherein the first clutch and the second clutch And the cam portion is slidable and spaced apart from each other at the completion of the lowering of the receiving member, so that the first clutch and the second clutch can be separated from each other.

The elevation unit includes a pair of support members having a plurality of rotatable link structures, an upper end supporting the inner accommodating portion and a lower end supporting the outer accommodating portion; And a shaft that connects the pair of support members and adjusts the height of the pair of support members threaded by normal and reverse rotation, the shaft extending rearwardly through the outer housing portion, So that it is possible to receive the power of the motor.

A refrigerator having a drawer according to an embodiment of the present invention includes a cabinet in which a storage space is formed; And a drawer unit disposed in the storage space, wherein the drawer unit has an external storage unit that forms a space having an opened upper surface and is drawn in and out of the cabinet; An inner storage unit that forms at least a part of a bottom surface of the storage space inside the outer storage unit and that is raised and lowered; A draw-in / out unit provided on the inside of the cabinet for drawing out the external storage unit; And an elevating unit which is operated after completion of withdrawal of the external storage unit by the draw-in / eject unit, and which raises and lowers the inside storage unit inside the external storage unit.

The cabinet may include a door that opens and closes the storage space and is coupled with the external storage unit to be drawn in and out.

A door for opening and closing the storage space is provided on the opened front surface of the cabinet, and the door is openable and closable independently of the outlet of the external storage unit.

The drawer device according to the embodiment of the present invention and the refrigerator provided with the drawer device can be expected to have the following effects.

The drawer device of the embodiment of the present invention is configured such that a part of the drawer device can be raised and lowered after being pulled out by the user's operation. Therefore, when the drawer unit is disposed at the lower portion, there is an advantage that the usability can be improved remarkably because the drawer unit does not need to excessively push down the waist or lift the stored object when the food is stored in the drawer unit .

In particular, the drawer can be pulled out to the outward side through a single operation, then raised, and can be pulled down after being operated again to maximize ease of use.

In addition, the drawer unit is configured such that the outer outer storage unit is configured to be drawn out and received, and the inner outer storage unit is configured to be raised and lowered, so that the food in the drawer unit can be pulled out and raised, And the structure for lifting and lowering can be simplified, and safety in use can be secured.

In addition, the driving assembly for the draw-out and the draw-in and draw-out of the draw-out device can have a simple structure, and in particular, it is possible to draw in and out of the draw-down device through one drive assembly, You can expect. In addition, there is an advantage that the loss of the storage space of the storage device can be minimized owing to the simple structure of the drive assembly.

1 is a front view of a refrigerator according to a first embodiment of the present invention.
2 is a view showing a door of the refrigerator opened.
FIG. 3 is a view showing a drawer taken out according to the first embodiment of the present invention. FIG.
FIG. 4 is a view showing a part of the drawer device being lifted and lowered.
5 is an exploded perspective view of the drawer apparatus.
6 and 7 are sectional views showing the structure of a bracket module as a main component of the drawer apparatus.
8 is a view schematically showing a state in which the drawer unit is drawn.
9 is a view schematically showing a state in which the drawer is drawn out.
10 is a view schematically showing a state in which the drawer is lifted and lowered.
11 is a cutaway perspective view showing a structure of a drawer apparatus according to a second embodiment of the present invention.
12 is a front view of a refrigerator according to a third embodiment of the present invention.
13 is a view showing the door of the refrigerator opened.
Fig. 14 is a sectional view of the storage device according to the third embodiment of the present invention taken from a side view. Fig.
15 is a view showing an operation state of the driving assembly in a state in which the accommodating device is drawn out.
16 is a view showing an operation state of the driving assembly in a state in which the storage device is lifted and lowered.
FIG. 17 is a view showing an operating state of the driving assembly in a state in which the accommodating device is introduced. FIG.

Hereinafter, specific embodiments of the present invention will be described in detail with reference to the drawings. It should be understood, however, that there is no intention to limit the spirit of the invention to the embodiments shown, and that other embodiments falling within the spirit of the invention or other inventions contemplated by way of addition, alteration, .

In the embodiment of the present invention, a bottom freezer type refrigerator having a freezer compartment below the freezer compartment is described as an example for convenience of explanation and understanding. However, the present invention is not limited to this, Type drawer device and a refrigerator equipped with a drawer device.

1 is a front view of a refrigerator according to a first embodiment of the present invention. FIG. 2 is a view showing a door of the refrigerator opened. FIG.

The refrigerator (1) according to the embodiment of the present invention may be shaped by a cabinet (10) forming a storage space and a door opening and closing the storage space.

The interior of the cabinet 10 may be divided into upper and lower parts by a barrier 11. A refrigerating chamber 12 may be formed in the upper portion of the cabinet 10 and a freezing chamber 13 may be formed in a lower portion of the cabinet 10. [ Can be formed. Various storage members such as shelves, drawers or baskets may be provided in the refrigerating chamber 12 and the freezing chamber 13. The refrigerator compartment 12 and the freezer compartment 13 may be referred to as an upper storage space or a lower storage space.

The door may comprise a refrigerator compartment door 20 and a freezer compartment door 30. The refrigerator compartment door 20 may be configured to open and close the opened front face of the refrigerating compartment 12 and the freezing compartment door 30 may be configured to open and close the opened front face of the freezing compartment 13 by sliding in / have. The refrigerator compartment door 20 may be referred to as an upper door, and the freezer compartment door 30 may be referred to as a lower compartment door.

The refrigerator compartment door 20 may be formed as a pair, and each of the refrigerator compartments 20 may be opened and closed by rotating the refrigerating compartment door 12. A dispenser 21 for taking out water or ice may be provided on one side (left side in FIG. 1) of the refrigerator compartment door 20. An ice making chamber 22 provided with an ice maker may be formed on the rear surface of the refrigerating chamber door 20 provided with the dispenser 21. The living-room ice compartment 22 forms a heat-insulating space independent of the refrigerating compartment 12, and can have a structure that can be opened and closed.

A display 23 may be provided on one side of the dispenser 21 to indicate the operation state of the refrigerator 1. [ An operation unit 231 for controlling the operation of the refrigerator 1 may be provided at one side of the display 23. The operation unit 231 may be squeezed by a button method or a touch method.

The refrigerating chamber door 20 on the other side (the right side in FIG. 1) of the refrigerating chamber door 20 may have a penetrating portion 24 through which a space behind the refrigerating chamber 12 can be seen. The transparent portion 24 may be selectively transparent or opaque depending on the user's operation and may be configured to display information and touch input as necessary. The refrigerator compartment door 20 includes a main door 201 which opens and closes the refrigerating compartment 12 and an auxiliary storage space is formed at an opening at the center of the refrigerating compartment door 12 and an opening of the main door 201, And a sub door 202 to be formed. The main door 201 and the sub door 202 may be rotatable in the same direction.

The freezer compartment door 30 may be provided on the front surface of the freezer compartment 13 and may be integrally formed with the external compartment 31 provided on the rear surface of the freezer compartment door 30. The entire structure including the freezing chamber door 30 and the external storage portion 31 may be referred to as a drawer. Of course, the drawer may be separated from the freezer compartment door 30 to refer only to the external compartment 31.

An upper basket (131) may be provided on the inner upper side of the freezing chamber (13). The upper basket 131 is also configured to be able to be drawn in and out in the forward and backward directions, and can be independently drawn out after the freezer compartment door 30 is opened.

FIG. 3 is a view showing a drawer taken out according to the first embodiment of the present invention. FIG. 4 is a view showing a state in which a part of the drawer device is moved up and down.

As shown in the drawing, the drawer may include the freezing chamber door 30 and an external receiving portion 31 provided on the rear surface of the freezing chamber door 30.

The front surface of the freezing chamber door 30 may form a front surface of the refrigerator 1 in a state where the freezing chamber door 30 is closed and may be formed of a metal material. A handle 32 may be provided on the upper surface of the freezing chamber door 30 to allow the freezing chamber door 30 to be drawn in and out.

The handle 32 may be further provided with a handle operating portion 321 for automatic draw-in and / or lift-off operation of the freezing chamber door 30. The handle manipulation unit 321 may be configured in the form of a button for inputting a manipulation of a user or may be provided with a sensor for sensing touch or manipulation of the user.

The external storage portion 31 may be formed as a basket having an opened upper surface and fixedly mounted on a frame provided on a rear surface of the freezing chamber door 30. [ Although not shown in detail, the frame may be formed in a square frame shape and disposed around the outer housing part 31, and the outer housing part 31 may be detachably attached to the frame.

The operation of the operating portion 231 or the handle operating portion 321 allows the drawer device to be drawn out and raised and lowered. The drawing and elevating operation of the drawer unit may be performed by one operation independently of drawing, elevating, and pulling and lowering according to the operation mode of the operating unit 231 or the handle operating unit 321, And at least one operation of withdrawing, ascending, descending, and withdrawing may be continuously performed.

In addition, a rail 33 may be provided on both sides of the external storage part 31. The rail 33 may be formed of a metal rail for drawing in and out of the freezing chamber door 30 and the outer storage portion 31 drawn out to the outside.

A draw guide 132 may be formed on both sides of the freezing chamber 13 to fix the rail 33. One end of the rail 33 may be fixedly mounted to the drawer guide 132 and the rail 33 may be extended in a multistage manner so that all or most of the external storage portion 31 is inserted into the freezing chamber 13 So that it can be drawn out.

The drawer unit may include an external storage unit coupled to the freezer compartment door 30 and an internal storage unit 34. The external storage unit is drawn out in the forward and backward directions and the internal storage unit 34 is raised and lowered in the vertical direction Or < / RTI > The outflow opening of the external storage portion and the lifting and lowering of the internal storage portion 34 may be continuously performed by a drive assembly (40 in FIG. 5).

3, the drawer unit can be pulled out by driving the driving assembly 40. After the drawer unit is drawn out, an inner storage unit 34 (including a bottom surface inside the outer storage unit 31) Can be raised to become the state shown in FIG. That is, as shown in FIG. 4, in a state in which the internal storage portion 34 is lifted up, it is possible to take out the food stored in the internal storage portion 34 without the user having to consider the waist much.

The inner accommodating portion 34 may be provided inside the outer accommodating portion 31 and may include at least a portion of the inner bottom surface of the outer accommodating portion 31. The inner accommodating portion 34 may be formed in a plate- . The inner storage portion 34 may extend upward from the inner bottom surface of the outer storage portion 31 to form at least a part of the inner peripheral surface.

On the left and right sides of the external storage part 31, an elevation guide 311 for guiding the upward and downward movement of the internal storage part 34 may be formed. The elevating guide 311 may be vertically opened and a part of the inner accommodating portion 34 may be penetrated to move up and down along the elevating guide 311. Although not shown in detail, the inside of the elevation guide 311 may be shielded so as to prevent foreign matter from flowing into the interior storage portion 34 when the internal storage portion 34 is lifted or lowered.

Hereinafter, the drawer will be described in more detail with reference to the drawings.

5 is an exploded perspective view of the drawer apparatus.

As shown in the figure, the drawer unit may include a driving assembly 40 mounted to the external storage unit 31 and the external storage unit 31.

The inner storage part (34) can be received in the outer storage part (31). The inner storage portion 34 can be vertically guided up and down by the circumferential surface of the outer storage portion 31. The food stored in the outer storage portion 31 can be raised and lowered .

The inner accommodating portion 34 may be formed in a plate shape to form a part of the bottom surface of the outer accommodating portion 31. The width of the inner accommodating portion 34 may be equal to the inner width of the outer accommodating portion 31 As shown in FIG. The inner storage portion 34 may be formed in a basket shape accommodated in the inner side surface of the outer storage portion 31. A separate frame may be provided on the lower surface of the inner storage portion 34 to reinforce the strength of the inner storage portion 34 to be lifted or lowered.

Meanwhile, guide projections 341 may be formed at both ends of the inner storage portion 34. [ The guide protrusion 341 may be formed at a position corresponding to the elevation guide 311 and may be inserted into the elevation guide 311. Therefore, when the internal storage portion 34 is lifted or lowered, the guide projection 341 and the elevation guide 311 can smoothly raise and lower the internal storage portion 34.

The driving assembly 40 for drawing in and out of the drawer unit may be disposed on the inside and outside of the external storage unit 31. The driving assembly 40 may be configured as a whole of the draw-in / out unit 41 and the elevation unit 42. The draw-in / out unit 41 may be disposed outside the outside compartment 31, The elevating unit 42 may be provided inside the external storage unit 31.

In detail, the draw-in / out unit 41 may be provided on the bottom surface of the internal space of the cabinet 10 or behind the external storage unit 31. The drawing input unit 41 includes a motor 411 for providing power, a shaft 412 rotated by the motor 411 and a bracket module 50 moved along the shaft 412 .

The motor 411 may be fixedly mounted on the bottom surface of the storage space inside the cabinet 10 and may be driven when the user operates the operating unit 231 or the handle operating unit 321. The motor 411 may be configured to rotate forward and backward in order to draw out the external storage portion 31 and move up and down the internal storage portion 34.

The shaft 412 may be coupled with the motor 411 and may be rotated and extend from one side of the motor 411 to the inside through the external storage part 31. A screw thread may be formed on the outer circumferential surface of the shaft 412 and rotated together with the motor 411 so that the bracket module 50 can be moved forward and backward along the shaft 412. That is, when the shaft 412 is rotated in the forward direction, the bracket module 50 is moved forward in the drawing direction of the external storage part 31, and when the shaft 412 is rotated in the reverse direction, And can be moved backward in the drawing direction of the external storage portion 31. The shaft 412 may be formed to have a length that can maintain the engagement with the bracket module 50 even when the external storage portion 31 is fully drawn out.

The bracket module 50 forms an outer tube and includes a first bracket 51 in contact with the outer housing 31 and a second bracket 51 provided inside the first bracket 51, And a second bracket 52 protruding from the first receiving portion 31 and operating the elevating unit 42 inside the external accommodating portion 31.

The second bracket 52 is formed to be able to pass through the opening 312 formed in the external storage portion 31. The second bracket 52 is fixed to the inside of the first bracket 51 when the external storage portion 31 is drawn in or out. When the internal storage portion 34 is lifted or lowered, So that the first bracket (51) can be raised and lowered by projecting from the first bracket (51).

The elevating unit 42 may be provided on the bottom surface of the external storage unit 31 and may be configured to lift the internal storage unit 34 below the internal storage unit 34. The elevating unit 42 may include a pair of support members 421 and 422 intersecting with each other and the intersecting points of the pair of support members 421 and 422 are axially coupled such that the pair of support members 421 and 422 are rotatable . Accordingly, the ends of the pair of support members 421 and 422 can be rotated so as to be close to each other or away from each other, and the height of the inner storage part 34 can be adjusted through the rotation.

In detail, the pair of support members 421 and 422 may include a first support member 421 and a second support member 422. The first supporting member 421 and the second supporting member 422 are formed so as to intersect with each other and the intersecting points are axially coupled so that the ends of the first supporting member 421 and the second supporting member 422 And may be rotated to approach or away.

The upper ends of the first supporting member 421 and the second supporting member 422 may be accommodated in a guide groove 342 formed in the lower surface of the inner accommodating portion 34. The upper end portions of the first support member 421 and the second support member 422 can be moved along the guide groove 3424 when the elevating unit 42 is operated. At this time, only the upper end of the first support member 421 to which the roller 423 of the first support member 421 and the second support member 422 is mounted may be moved along the guide groove 342, The upper end of the second support member 422 may be fixed inside the guide groove 342. [

The lower ends of the first support member 421 and the second support member 422 are brought into contact with the bottom surface of the external storage portion 31. At this time, the lower end of the second support member 422 may be fixed to the bottom surface of the external storage unit 31, and the roller 423 may be provided at the lower end of the second support member 422 . When the first support member 421 and the second support member 422 are brought close to or away from each other, the roller 423 at the lower end of the second support member 422 rolls, Can be smoothly performed.

Of course, the shape and structure of the roller 423 are not limited, and other structures capable of smooth movement of the second supporting member 422 are also possible. The roller 423 may be provided on the upper end of the second support member 422 to smoothly move the second support member 422.

A plurality of the elevation units 42 may be provided at positions spaced apart in the horizontal direction, and if the plurality of elevation units 42 are provided, the inner storage unit 34 may be more stably supported.

And a connecting member 424 for connecting between the second supporting members 422 when the elevating units 42 are provided. The height of the connecting member 424 may be located at a height corresponding to the height of the second bracket 52 so that the connecting member 424 is pushed when the second bracket 52 is moved The elevating unit 42 can be operated. The second bracket 52 may be attached to the second support member 422 or the roller 423 so that the second support member 422 or the roller 423 may not be provided. It may be moved by pushing it directly.

It is also possible to connect the center of rotation of the elevating units 42 with separate shafts or shafts in order to maintain a gap between the plurality of elevating units 42 and secure a stable supporting structure.

6 and 7 are sectional views showing the structure of a bracket module as a main component of the drawer apparatus.

Referring to the drawings, the structure of the bracket module 50 will be described in more detail. The bracket module 50 can be pierced by the shaft 412, and when the shaft 412 rotates, 412 in the forward and backward direction.

The bracket module 50 may include the first bracket 51 and the second bracket 52 and the second bracket 52 may be received inside the first bracket 51. [ For this, a first hollow 511, which is opened in the forward and backward directions, may be formed in the first bracket 51. A stepped portion 512 may be formed on the front end of the first hollow 511 and a ball receiving portion 513 may be formed on the inner side of the first hollow 511. A plurality of the ball receiving portions 513 may be disposed in directions facing each other. The edge of the ball receiving portion 513 may be inclined so that the ball 53 can easily enter and exit the ball receiving portion 513 when the second bracket 52 is moved back and forth.

The first bracket 51 may be coupled to a rear surface of the external storage unit 31. Therefore, when the first bracket 51 is moved forward, the external storage portion 31 can be moved forward together. When the first bracket 51 is moved backward, the external storage portion 31 is also moved backward .

The second bracket 52 may be provided in the first hollow 511 of the first bracket 51. A flange 522 corresponding to the stepped portion 512 may protrude outward from a front end of the second bracket 52. When the flange 522 is seated on the stepped portion, (51) is no longer moved backward. The second bracket 52 may have the same plane as the front surface of the first bracket 51 while being inserted into the first bracket 51.

A ball mounting portion 523 may be formed on the outer surface of the second bracket 52 so that the ball 53 can be mounted. The ball mounting portion 523 may be formed in a number corresponding to the position corresponding to the ball receiving portion 513. When the second bracket 52 is completely inserted into the first bracket 51, the ball mounting portion 523 and the ball receiving portion 513 may be disposed on the same extension line, 53 can be accommodated.

The ball 53 may be fixed on the ball mounting portion 523 by an elastic member 531 that supports the ball 53. The elastic member 531 pushes the ball 53 outward while the second bracket 52 is moved along the inner side of the first bracket 51. When the second bracket 52 is fully inserted into the first bracket 51, the ball 53 is supported so as to be in close contact with the inside of the ball receiving portion 513. [ Therefore, in order for the second bracket 52 to move out of the first bracket 51, a force is applied to the ball 53 so that the ball 53 can be removed from the ball receiving portion 513. [ Even when the second bracket 52 is completely removed from the first bracket 51, the ball 53 is not separated by the elastic member 531 and is mounted on the ball mounting portion 523 .

A second hollow 521 passing through the second bracket 52 may be formed at the center of the second bracket 52. A thread is formed on the inner surface of the second hollow 521 to be coupled with the thread of the outer surface of the shaft 412. Therefore, the second bracket 52 can be moved in accordance with the rotation of the shaft 412.

Hereinafter, a drawing operation of the drawer apparatus according to the embodiment of the present invention will be described with reference to the drawings.

8 is a view schematically showing a state in which the drawer unit is drawn. 9 is a view schematically showing a state in which the drawer is pulled out. And. 10 is a view schematically showing a state in which the drawer is lifted and lowered.

As shown in the drawing, the drawer is kept in a state of being fully opened in the storage space inside the cabinet 10 before the opening operation of the user. In this state, the inner storage portion 34 is provided on the inner side of the outer storage portion 31 and is positioned at the lowest level.

The motor 411 is in a stopped state and the bracket module 50 is positioned closest to the motor 411. The second bracket 52 of the bracket module 50 is positioned inside the first bracket 51 and the ball 53 is positioned inside the ball receiving portion 513 to move the second bracket 51 52 are retained in the inside of the first bracket (51).

Meanwhile, the support members 421 and 422 constituting the lifting unit 42 support the internal storage unit 34 in the lowest state. At this time, the distance between the first support member 421 and the upper end of the second support member 422 may be the most distant.

In this state, the user can operate the operation unit 231 or the handle operating unit 321 to input the draw-out operation and the lift-up operation of the drawer apparatus.

The driving of the motor 411 is started in response to a user's operation input, and the motor 411 rotates in a forward direction. The shaft 412 also rotates in the forward direction in accordance with the forward rotation of the motor 411 and the bracket module 50 also moves forward as the shaft 412 rotates in the forward direction. At this time, the first bracket 51 and the second bracket 52 may be moved in a state where the first and second brackets 51 and 52 are constrained to each other by the ball 53.

The external storage portion 31 coupled with or supported by the bracket module 50 can be moved forward and taken out together with the forward movement of the bracket module 50. [ At this time, since the outer receiving portion 31 is supported by the rail 33 even though the food is housed therein, an excessive load will not be applied to the bracket module 50, Lt; / RTI >

On the other hand, when the external storage portion 31 is fully drawn out and the state shown in FIG. 9 is reached, the rail 33 is extended as much as possible and the external storage portion 31 is no longer drawn out. Even in this state, the motor 411 can maintain the forward rotation state.

When the motor 411 maintains the forward rotation, the shaft 412 exerts a forward force on the bracket module 50, and in particular, a force is applied to the second bracket 52 connected to the shaft 412 Respectively. At this time, the magnitude of the force applied to the second bracket 52 is such that the ball 53 can move out of the ball receiving portion 513, and the outer receiving portion 31 is further moved forward It can happen in a situation where it can not.

The second bracket 52 can be moved forward by a force applied to the second bracket 52 due to the rotation of the shaft 412. [ At this time, the elastic member 531 supporting the ball 53 is compressed, and the ball 53 moves out of the ball receiving portion 513. In this state, the forward movement of the second bracket 52 Lt; / RTI >

10, the second bracket 52 is protruded to the outside of the first bracket 51 by the constant forward rotation of the motor 411, and the opening 312 of the external accommodating portion 31 And may be introduced into the inside of the external storage portion 31. [ And is brought into contact with the connecting member 424 of the elevating unit 42 at the front and the elevating unit 42 can be operated by pushing the connecting member 424 forward.

When the connecting member 424 is pushed forward, the second supporting member 422 is rotated by the rolling motion of the roller 423 mounted on the second supporting member 422, The end portions of the member 421 and the second support member 422 move in a direction in which they approach each other. Therefore, the inner storage portion supported by the first and second support members 421 and 422 is moved upward, and the inner bracket 52 is moved forward by the forward movement of the second bracket 52, 34) will continue to rise.

On the other hand, when the internal storage portion 34 reaches the maximum height or the set height, the motor 411 stops driving. The determination of stopping the driving of the motor 411 may be performed by counting the time during which the internal storage unit 34 can reach the maximum height by using a timer or by determining the number of times the internal storage unit 34, Or the position of the second bracket 52 may be sensed by using a sensing device or may be determined based on the variation of the load applied to the motor 411. [

The user can store the food in the internal storage portion 34 in a state where the internal storage portion 34 is located at the uppermost position. After completion of the storage operation, the user can hold the operation portion 231 or the handle operation portion 321 to operate to lower and draw the storage device.

The motor 411 starts to rotate in the reverse direction according to a user's operation input. The second bracket 52 moves backward from the inside of the outer housing part 31 in accordance with the reverse rotation of the motor 411. The force for pushing the connecting member 424 can be removed by the rearward movement of the second bracket 52 and therefore the load of the food accommodated in the inner accommodating portion 34 or the inner accommodating portion 34 The end portions of the first support member 421 and the second support member 422 are spaced apart from each other.

The second bracket 52 is continuously moved backward along the shaft 412 by the continuous reverse rotation of the motor 411 and the second bracket 52 is moved backward through the opening 312 of the external accommodating portion 31, 1 bracket 51, as shown in Fig.

When the second bracket 52 returns to the inside of the first bracket 51, the force for pushing up the elevation unit 42 is completely removed, and the internal storage unit 34 is moved to the lowest position Return. The second bracket 52 is completely retracted into the first bracket 51 as shown in FIG.

When the second bracket 52 is completely inserted into the first bracket 51, the stepped portion 512 of the first bracket 51 and the flange 522 of the second bracket 52 are engaged with each other And the ball 53 is received again inside the ball receiving portion 513 so that the second bracket 52 is engaged with the first bracket 51.

In this state, when the motor 411 maintains the reverse rotation, the bracket module 50 moves backward along the shaft 412, and the external storage portion 31 also moves backward . The reverse movement of the motor 411 is continued until the external storage portion 31 is completely drawn and becomes the state shown in FIG. 8, and may be stopped when the external storage portion 31 is fully inserted.

 The determination of stopping the driving of the motor 411 may be made by counting the time during which the external storage unit 31 can be completely drawn by a timer or by determining the time when the external storage unit 31, It is possible to detect the position of the motor 50 by sensing using the sensing device or to judge it by the variation of the load applied to the motor 411.

In this way, the drawer unit can be lifted up from the freezing chamber 13 and then the internal storage unit 34 can be lifted. After completion of the storage of food, the internal storage unit 34 is lowered again, And enters the freezing chamber 13 to complete the operation for storing the food.

That is, the drawer can be lifted after automatic withdrawal by the user's operation, and the user can perform the continuous operation after descending by the operation of the user, thereby facilitating the storage of the food.

It should be noted that the present invention is not limited to the above-described embodiments, and various other embodiments may be possible. Hereinafter, other embodiments of the present invention will be described with reference to the accompanying drawings. In each of the other embodiments, the same reference numerals are used for the same components as those of the above-described embodiment, and a detailed description thereof will be omitted.

11 is a cutaway perspective view showing a structure of a drawer apparatus according to a second embodiment of the present invention.

As shown in the figure, the drawer unit according to the second embodiment of the present invention may include an outer receiving portion 31 and an inner receiving portion 34 having a structure that can be elevated inside. The inner storage portion 34 can be lifted or lowered according to the operation of the driving assembly and can be moved up and down along the elevation guide formed on both sides of the inside of the outer storage portion 31.

The driving assembly may include a draw-in / out unit 60 for drawing out the external storage unit 31 and a lifting unit 64 for lifting the interior storage unit 34.

The drawing input / output unit 60 may include a rack member 61 disposed on both sides of the high inner wall surface and a pinion 63 provided on the outer housing portion 31. The rack member 61 may be formed to have a length that extends in the pull-out direction of the external storage portion 31 and can secure a pull-in distance. The rack member 61 can be gear-engaged with the pinion 63.

The rack member 61 may be provided on both left and right sides of the rack member 61. The rack member 61 may be provided on both left and right sides of the rack member 61. The rack member 61 may be provided on both left and right sides of the pinion 63, May be configured to move along the rack member (61). Of course, it is also possible that the rack member 61 is formed on both sides of the outer housing part 31 as required, and the drawing-out motor 62 and the pinion 63 are provided on the wall surface of the storage space.

The elevating unit 64 is provided on the bottom of the internal storage unit 34 and may be configured to support a lower surface of the internal storage unit 34. The elevating unit 64 includes a pair of supporting members 643 connecting the upper supporting portion 641 and the lower supporting portion 642 and connecting the upper supporting portion 641 and the lower supporting portion 642 and having a link structure, And a shaft 644 connected to the support member 643 of the support member 643. Such a configuration is the same as that of a lifting device, which is generally called a jack-up device, so a detailed description thereof will be omitted.

The shaft 644 is formed with threads on its outer side and a first elevator 65 may be provided on an end of the shaft 644. An elevating motor 66 is provided on the bottom of the internal storage unit 34 and a second elevator gear 67 engaged with the first elevator gear 65 is provided on the rotating shaft of the elevating motor 66 . Therefore, when the elevating motor 66 is driven, the first elevator gear 65 and the second elevator gear 67 rotate. By rotating the shaft 644, the upper end of the elevating unit 64 The upper support portion 641 is raised and lowered, and the inner storage portion 34 is also raised and lowered together.

The operation of the drawing-out motor 62 and the elevation motor 66 can be controlled by a control unit (not shown). The control unit sequentially controls the operations of the takeout input motor 62 and the elevation motor 66.

In detail, when the user inputs the drawing-out operation and the pull-up operation of the drawer apparatus, the drawing-out input motor 62 starts driving first. The external storage portion 31 can be pulled forward by the forward rotation of the pull-out motor 62 and the pull-out motor 62 is stopped when the external storage portion 31 is fully drawn out .

The elevation motor 66 is rotated forward at the same time when the drawing-out motor 62 is stopped, and the elevation unit 64 is elevated, and the internal storage unit 34 is moved upward. When the internal storage portion 34 reaches the highest height, the elevation motor 66 stops driving.

In this state, the user can store the food in the internal storage portion 34, and when the storage is completed, the user can input the descending and pulling-in operation of the drawer device again. When the user inputs an operation, the elevating motor 66 starts driving. At this time, the elevating motor 66 is rotated in the reverse direction. The elevation unit 64 is operated to be lowered by the reverse rotation of the elevation motor 66, and the internal storage unit 34 is moved downward. When the internal storage portion 34 reaches the lowest height, the elevation motor 66 stops driving.

When the elevating motor 66 is stopped, the take-out motor 62 rotates in the reverse direction. By the reverse rotation of the take-out motor 62, the external storing part 31 can be retracted have. When the external storage portion 31 is completely drawn, the pull-out motor 62 is stopped and the lowering and pulling-in operation of the storage device is completed.

12 is a front view of a refrigerator according to a third embodiment of the present invention. 13 is a view showing the door of the refrigerator opened.

The refrigerator 2 according to the third embodiment of the present invention includes an upper storage space 72 partitioned by the barrier 71 and a cabinet 70 And an upper door 81 and a lower door 82 for opening and closing the upper storage space 72 and the lower storage space 73, respectively.

A pair of the upper doors 81 may be provided, and a pair of the upper doors 81 may be rotatably mounted to the cabinet 70 independently of each other. Therefore, the upper storage space 72 can be partly opened and closed by each of the upper doors 81.

The lower storage space 73 may be partitioned by the vertical wall 731 on the left and right sides. A pair of the lower doors 82 may be provided, and a pair of the lower doors 82 may be rotatably mounted to the cabinet 70 independently of each other. Accordingly, the lower door 82 can open and close the partitioned left and right spaces of the lower storage space 73, respectively.

On the front of the upper door 81, an operation unit 812 for operating the operation of the refrigerator 2 may be further formed on the display 811 for displaying the operation state of the refrigerator 2. [

The lower door 82 can be automatically opened and closed by the operation of the operation unit 812 and the external storage unit 36 disposed in the lower storage space 73 in connection with automatic opening and closing of the lower door 82, And the lifting and lowering of the internal storage portion 37 inside the external storage portion 36 may be continued. Of course, the operating portion 812 may be operated so that at least one of the opening and closing of the lower door 82, the withdrawal of the external storage portion 36, and the lifting and lowering of the internal storage portion 37 may be performed independently have.

Meanwhile, the external storage part 36 may be provided inside the lower storage space 73. [ The external storage portion 36 can be configured to be drawable in a drawer manner. A drive assembly may be provided behind the external storage portion 36 for drawing out the external storage portion 36 and lifting the internal storage portion 37 inside the external storage portion 36. [ The configuration of the driving assembly may be any of the above-described embodiments.

Fig. 14 is a sectional view of the storage device according to the third embodiment of the present invention taken from a side view. Fig.

Referring to the drawings, the external storage portion 36 and the driving assembly will be described in detail. In the lower storage space 73, an external storage portion 36 may be provided. The external storage portion 36 may be formed in a basket shape having an upper surface such as a pull-out drawer. The external storage portion 36 may include an internal storage portion 37 that can be raised and lowered, and the internal storage portion 37 may also be formed in a basket shape. The external storage portion 36 and the internal storage portion 37 may be defined as a drawer.

That is, the drawer may be shielded by the lower door 82. The outer housing portion 36 is drawn out in the front-rear direction, and the inner housing portion 37 can be vertically moved up and down. The outlets of the external storage portion 36 and the lifting and lowering of the internal storage portion 37 may be continuously performed by the drive assembly.

The inner accommodating portion 37 has a size large enough to be accommodated inside the outer accommodating portion 36. Preferably, the outer surface of the inner accommodating portion 37 is in contact with the inner surface of the inner accommodating portion 37 . The height of the inner storage portion may be lower than the height of the outer storage portion 36.

The inner storage portion 37 has a vertically liftable structure. For this purpose, elevation guides extending in the vertical direction may be formed on both left and right sides of the outer storage portion 36. The inner storage portion 37 can be raised and lowered in a state in which the outer storage portion 36 is completely drawn out, so that the inner storage portion 37 can be prevented from interfering with the inner and outer structures of the inner storage portion 37.

The driving assembly may include a draw-in / out unit 90 for guiding the draw-out of the external storage portion 36 and an elevation unit 64 for guiding the lifting and lowering of the internal storage portion 37. The input / output unit 90 and the elevation unit 64 can be operated by using one motor 91 provided in the drawing input / output unit 90. In other words, it is possible to use a single motor 91 to have a structure capable of both the draw-in and draw-out of the drawer apparatus.

The draw-in / out unit 90 may include a rack member 61 formed on both side walls of the lower storage space 73. A pinion 92 that is moved along the rack member 61 and a drive gear 95 and a motor gear 93 for driving the pinion 92 and the motor gear 93, And may include a motor 91.

The motor gear 93 and the drive gear 95 are rotated by the motor 91 so that the pinion 92 is moved forward along the rack member 61, 36 can be drawn out.

The power take-off unit 90 is provided with a clutch 97 for transmitting power to the elevating unit 64 in a state in which the external accommodating portion 36 is completely drawn out by the clutch 97 And can be connected to the transmission gear 65.

The transfer gear 65 may extend vertically and may supply the power of the take-in / out unit 90 to the elevating unit 64. Both ends of the transmission gear 65 are formed in a bevel gear structure. One side of the take-in / take-in unit 90 and the elevating unit 64 coupled to the transfer gear 65 is also formed in a bevel gear structure, .

The elevating unit 64 may be provided on the inner bottom surface of the external storage unit 36 and the elevating unit 64 may be configured to support the lower surface of the internal storage unit 37. The elevating unit 64 may have the same structure as the jack-up device like the elevating unit 64 in the second embodiment described above.

 The elevating unit 64 includes a pair of supporting members 643 having a link structure for connecting the upper supporting portion 641 and the lower supporting portion 642 and the upper supporting portion 641 and the lower supporting portion 642, And a shaft 644 connected through member 643. The spacing between the pair of support members 643 is adjusted by the rotation of the shaft 644 formed with the threaded portion and the upper support portion 641 is vertically lifted and lowered to rotate the inner housing portion 37 And to move them up and down.

The end of the shaft 644 may be exposed through the outer housing portion 36 and exposed to the rear surface of the outer housing portion 36. A gear 645 in the form of a bevel gear which can be engaged with the lower end of the transmission gear 65 may be mounted.

 Hereinafter, the structure and operation of the driving assembly will be described in detail with reference to the drawings.

15 is a view showing an operation state of the driving assembly in a state in which the accommodating device is drawn out. 16 is a view showing an operation state of the driving assembly in a state in which the accommodating device is lifted and lowered. FIG. 17 is a view showing an operating state of the driving assembly in a state in which the accommodating device is introduced.

As shown in the figure, the drive assembly described above can be configured to include a motor 91, a motor gear 93, a drive shaft 94, a drive gear 95, a clutch 97, and a pinion 92 have.

More specifically, the motor 91 is mounted on the outer housing portion 36 to provide power for drawing out the outer housing portion 36 and for lifting the inner housing portion 37. A motor gear 93 is mounted on the motor shaft 911 of the motor 91 and is rotated together with the motor 91 when the motor 91 is driven.

The motor gear 93 may be composed of a first motor gear 93 and a second motor gear 93. The first motor gear 93 and the second motor gear 93 may be spaced apart from each other have. The first motor gear 93 and the second motor gear 93 may be integrally formed or separately arranged on the motor shaft 911 after being molded. The first motor gear 93 has a larger diameter than the second motor gear 93 and is positioned closer to the motor 91.

The driving shaft 94 may be disposed parallel to the motor shaft 911 and may extend to a rack member 61 formed on the inner side wall. The drive shaft 95 may be mounted on the drive shaft 94 with both the clutch 97 and the pinion 92.

Meanwhile, although the drive shaft 94 is formed as a single shaft structure, the drive shaft 94 may have a different cross-sectional shape. The drive shaft 94 includes a first drive portion 941 extending at one end near the motor 91 and having a polygonal sectional shape and a second drive portion 942 extending from the first drive portion 941 toward the pinion 92, And a second driving unit 942 having a cross section. The first driving gear 95 mounted on the first driving part 941 can be rotated together with the driving shaft 94 and the second driving gear 95 mounted on the second driving part 942, The clutch 97 may be rotated independently of the drive shaft 94 about the drive shaft 94.

The driving gear 95 may include a first driving gear 95 and a second driving gear 95. The first driving gear 95 and the second driving gear 95 may be spaced from each other and the diameter of the first driving gear 95 may be smaller than the diameter of the second driving gear 95 have. The first drive gear 95 and the second drive gear 95 can slide along the drive shaft 94 and the first drive gear 95 can slide along the drive shaft 94, The motor gear 93 and the second driving gear 95 may be selectively connected to the second motor gear 93. [ That is, the first drive gear 95 and the second drive gear 95 are connected to the first motor gear 93 or the second motor gear 93 according to a state of sliding along the drive shaft 94 .

In detail, the first driving gear 95 may be mounted on the first driving part 941. At this time, the center of the first driving gear 95 may be formed in the same polygonal shape as that of the first driving part 941, as shown in the section A-A ' 1 drive gear 95 can be rotated together. In other words, when the first driving gear 95 and the first motor gear 93 are connected to each other, the driving shaft 94 can be rotated when the motor 91 is driven, . The first driving part 941 is formed to have a predetermined width so that the first driving gear 95 can be slid toward the pinion 92 along the driving shaft 94, Thereby enabling selective connection with the gear and the first motor gear 93.

A first connection portion 951a protruding toward the pinion 92 may be formed on one side surface of the first drive gear 95 and a second connection portion 951a on which the second drive gear 95 is mounted 952a. Accordingly, when the first driving gear 95 and the second driving gear 95 are slidably moved along the driving shaft 94, the first driving gear 95 and the second driving gear 95 can be moved while maintaining a predetermined gap therebetween.

Meanwhile, the second driving gear 95 may be mounted on the second connecting portion 952a mounted on the second driving portion 942. Since the second connection portion 952a is formed to be hollow and is attached to the second driving portion 942 having a circular section as shown in cross section B-B ', the second connection portion 952a is free to rotate around the second driving portion 942 And can be configured to be rotatable.

One end of the second connection portion 952a facing the motor 91 is coupled to the first connection portion 951a and the first drive gear 95 and the second drive gear 95 So that they can be slidingly moved together. The first connection portion 951a and the second connection portion 952a may be rotatably connected to each other so that the first drive gear 95 and the second drive gear 95 can rotate independently.

A clutch 97 may be disposed at the other end of the second connection portion 952a toward the pinion 92. [ Accordingly, the second coupling portion 952a and the clutch 97 may be configured to be slidable and rotatable together along the drive shaft 94. [0064]

The second driving gear 95 may be disposed on the second connecting portion 952a and may have a larger diameter than the first driving gear 95. [ In this case, the diameter of the second driving gear 95 may be such that the diameter of the second driving gear 95 can be engaged with the second motor gear 93 when the second driving gear 95 is slid.

Meanwhile, a drive shaft sleeve 96 may be formed inside the second connection portion 952a. The drive shaft sleeve 96 is formed to penetrate through the center by the drive shaft 94 and the drive shaft 94 can be rotated and slidably moved inside the drive shaft sleeve 96. The drive shaft sleeve 96 may extend from the inside of the second connection portion 952a to the end of the clutch 97 or the stopper 975. [

One end of the drive shaft sleeve 96 inside the second connection portion 952a is bent outwardly to form a first spring support portion 961. The first spring support portion 961 may be provided with a first spring 962. One end of the first spring 962 may be supported by the first spring support portion 961 and the other end may be supported by one side of the second connection portion 952a or one side of the clutch 97. Therefore, the clutch 97 can be compressed when it is moved toward the side of the motor 91, and the clutch 97 is provided with an elastic force capable of returning to the original position.

The clutch 97 is for switching between the first motor gear 93 and the first drive gear 95 in a state where the second motor gear 93 and the second drive gear 95 are connected to each other, Can be rotatably mounted on the second drive portion 942 of the second motor 94. The clutch 97 may be rotatably coupled with the second connection portion 952a.

More specifically, the clutch 97 includes a first clutch 971 in contact with the second connection portion 952a, a second clutch 972 coupled with the first clutch 971 in a cam structure, (972).

The first clutch 971 may be coupled to the second coupling portion 952a or may be integrally formed with the second coupling portion 952a and may be configured to rotate together with the second coupling portion 952a have. A first cam portion 973 may protrude from one side of the first clutch 971 and a vertical surface 973a and an inclined surface 973b may be formed in the first cam portion 973, The driving force may be transmitted to the second clutch 972 or may be separated from the second clutch 972 in accordance with the rotational direction of the clutch 971. [

A gear portion 971a may be formed on one side of the first clutch 971. [ The gear portion 971a may be formed in a bevel gear shape and may be connected to the transmission gear 65. That is, the gear portion 971a of the first clutch 971 may be selectively connected to the transmission gear 65 in accordance with the movement of the first clutch 971, The selective power transmission to the elevating unit 64 becomes possible.

The second clutch 972 is formed so as to be in contact with the first clutch 971 and has a second cam portion 973 which is recessed in a shape corresponding to the first cam portion 973, 974 may be formed. The second cam portion 974 may be formed with a vertical surface 974a and a sloped surface 974b having a shape corresponding to the first cam portion 973. Therefore, when the first clutch 971 rotates in the forward direction, the vertical surfaces 973a and 974a of the first cam portion 973 and the second cam portion 974 are brought into contact with each other, (972) can be rotated together. When the first clutch 971 is rotated in the reverse direction, the inclined surfaces 973b and 974b of the first cam portion 973 and the second cam portion 974 are in contact with each other, and the first clutch 971 and second The clutches 972 may be spaced apart from each other.

The stopper 975 may be provided on one side of the second clutch 972. The stopper 975 may support the second clutch 972 at one end and may be integrally formed with the second clutch 972. [

The second clutch 972 may be formed as a plate having a predetermined size. At least a part of the second clutch 972 may be made of a metal material adhered to the magnet. The rack member 61 may be provided with a magnet 612. The magnet 612 is mounted at a position corresponding to the position of the pinion 92 or the stopper 975 when the front end of the rack member 61 reaches the position at which the external storage portion 36 is completely drawn out .

Therefore, when the pinion 92 is moved along the rack member 61, the stopper 975 can be attached to the magnet 612 when the pinion 92 reaches the position where the external storage portion 36 is completely drawn out. .

That is, the stopper 975 is spaced apart from the rack member 61 and is spaced apart from the rack member 61 while the external storage portion 36 is being drawn in and out. When the external storage portion 36 is completely drawn out, (975) can be moved and attached to the rack member (61) by the magnet. Both the drive gear 95 and the clutch 97 on the drive shaft 94 as well as the stopper 975 slide along the drive shaft 94 toward the rack member 61. At this time, And the drive gear 95 are switched.

Meanwhile, a second spring 976 may be provided on one side of the stopper 975. The second spring 976 may provide an elastic force to allow the stopper 975 to return to the original position away from the magnet 612. One end of the second spring 976 is in contact with the stopper 975 and the other end of the second spring 976 is in contact with the second spring support portion 921 fixed on the drive shaft 94. The second spring support portion 921 may be fixedly mounted on the drive shaft 94 as a separate material or integrally formed with the pinion 92.

A pinion 92 may be mounted on the end of the drive shaft 94. The pinion 92 may be mounted on the drive shaft 94 so that the pinion 92 can be rotated together with the drive shaft 94. The rack member 61 is mounted on the upper end of the rack member 61 and gear-engaged with the gear member 611 of the rack member 61 so as to be movable back and forth along the rack member 61.

Hereinafter, operation of the driving assembly according to the embodiment of the present invention will be described.

In a state in which the external storage portion 36 is fully retracted into the interior space before the user's operation, the drive assembly becomes in a state as shown in Fig. At this time, the first motor gear 93 is connected to the first driving gear 95.

When the storage device withdrawal and lift-up operation input of the user is started in this state, the motor 91 is driven and the drive shaft 94 is driven forward by the first motor gear 93 and the first drive gear 95 . The pinion 92 connected to the drive shaft 94 also rotates in a forward direction when the drive shaft 94 rotates in the forward direction and moves forward along the rack member 61 so that the front end of the external storage portion 36 Withdrawal may proceed.

The second drive gear 95 is not connected to the second motor gear 93 and the second drive gear 95 and the clutch 97 are connected to the second drive unit 942 And is not rotated independently of the rotation of the drive shaft 94 because it is connected. The first clutch 971 is in a state in which power is not transmitted to the transmission gear 65 in a state where the first clutch 971 is spaced apart from the transmission gear 65. [

The pinion 92 reaches the end of the rack member 61 or a specific position of the rack member 61 when the external storage portion 36 is completely drawn out. At this time, a magnet is disposed in the rack member 61, so that the stopper 975 moves to the rack member 61 side by the magnetic force, and the state shown in FIG. 16 is obtained. At this time, the second spring 976 supporting the stopper 975 can be compressed by the movement of the stopper 975.

Both the first drive gear 95 and the clutch 97 connected to the second connection portion 952a are horizontally moved to the pinion 92 side. That is, with the movement of the stopper 975, both the drive gear 95 and the clutch on the drive shaft 94 slide toward the pinion 92 side.

Therefore, the motor gear 93 and the drive gear 95 can be switched to a state where the second motor gear 93 and the second drive gear 95 are coupled to each other. In this state, the second drive gear 95 rotates in the forward direction, and the clutch connected to the second drive gear 95 also rotates in the forward direction.

On the other hand, the gear portion 971a of the first clutch 971 and the transmission gear 65 are engaged with each other by the movement of the clutch 97. The transmission gear 65 can be rotated together with the rotation of the clutch 97 so that power can be transmitted to the elevating unit 64 through the transmission gear 65. [

When the forward rotation of the clutch 97 is transmitted to the elevating unit 64, the height of the elevating unit 64 is increased, so that the inner accommodating portion 37 is also located inside the outer accommodating portion 36 . When the internal storage portion 37 reaches the maximum height or the set height, the driving of the motor 91 may be stopped. Then, the user can perform an operation of storing the food in the internal storage unit 37. [

The motor 91 can be driven by a drive time control or a sensor device for sensing the height of the internal storage part 37. When the internal storage part 37 is raised or lowered to a set height, .

The second drive gear 95 and the clutch 97 are both connected to the second drive portion 942 of the drive shaft 94 and are rotatable about the drive shaft 94. Therefore, no power is transmitted to the drive shaft 94, so that the pinion 92 is not rotated, and the external storage portion 36 maintains the maximum drawing state.

When the user inputs the descending and pulling-in operation of the drawer device in the state where the internal storage portion 37 is completely raised and stopped, the motor 91 starts driving. At this time, the motor 91 rotates in a direction opposite to that of the rising of the internal storage portion 37.

The second drive gear 95 and the clutch 97 also rotate in the opposite direction due to the rotation of the motor 91 in the opposite direction. While the clutch 97 is being pressed by the first spring 962, the first clutch 971 and the second clutch 972 are rotated in reverse while being coupled to each other.

The transmission gear 65 which is in a state of being engaged with the gear portion 971a of the first clutch 971 is also rotated in the reverse direction by the reverse rotation of the clutch 97, Power transmission. The elevation unit 64 is lowered in height by the reverse rotation of the transmission gear 65 and the height of the internal storage unit 37 is also lowered.

The internal storage portion 37 can be lowered to the lowest height by the continuous driving of the motor 91. [ On the other hand, the second drive gear 95 and the clutch 97 can not be rotated even if the motor 91 rotates further in a state in which the internal storage portion 37 is lowered to the lowest height and can not be further lowered A force is applied to the inclined surfaces 973b and 974b of the first clutch 971 and the second clutch 972 so that the first clutch 971 compresses the first spring 962, And moves toward the motor 91 side.

The first drive gear 95 is also moved toward the motor 91 by the movement of the first clutch 971 so that the first drive gear 95 is engaged with the first motor gear 93 State.

When the motor 91 rotates while the first motor gear 93 and the first driving gear 95 are meshed with each other, the first driving gear 95 is rotated in the opposite direction, The pinion 92 connected to the pinion 92 is also rotated in the reverse direction.

The pinion 92 moves rearward along the rack member 61 and the stopper 975 is detached from the magnet 612 instantaneously. The stopper 975 and the second clutch 972 are returned to the side of the motor 91 by the elastic force of the second spring 976 and the first clutch 971 and the second clutch 972 972 are again coupled together as shown in Fig.

In this state, the first drive gear 95 and the pinion 92 continue to rotate in a reverse direction, and the outer housing portion 36 can be drawn inward. When the drawing of the external storage portion 36 is completed, the motor 91 stops driving and can complete the operation. At this time, the completion of driving of the motor 91 may be controlled by a drive time control of the motor 91 or a sensing device that senses the position of the external storage part 36.

Claims (18)

An external storage portion forming a space having an opened upper surface and being drawn in and out of the cabinet;
An inner storage unit that forms at least a part of a bottom surface of the storage space inside the outer storage unit and that is raised and lowered;
A draw-in / out unit provided on the inside of the cabinet for drawing out the external storage unit;
And an elevating unit operated after completion of the drawing of the external storage portion by the draw-in / ejecting unit, and raising and lowering the inside storage portion inside the external storage portion.
The method according to claim 1,
The drawing input /
A motor mounted inside the cabinet;
A shaft that is rotated by the motor and extends to the inside of the external storage portion;
And a bracket module reciprocating along a thread of the shaft and engaged with the external housing part,
And at least a part of the module bracket flows into the inside of the outer housing part to operate the elevating unit.
3. The method of claim 2,
The bracket module includes:
A first bracket that forms an outer surface of the bracket module and is fixedly coupled to an opening of a back surface of the external storage part;
And a second bracket mounted on the shaft to move in and out of the hollow of the first bracket and to push and operate the elevating unit through the opening.
The method of claim 3,
And a ball which is elastically supported on the outer periphery of the second bracket,
Wherein the first bracket has a hollow inner side surface formed with a ball receiving portion which is recessed so that the ball is selectively received,
And the second bracket is selectively separated from the first bracket according to the constraint of the ball receiving portion and the ball.
3. The method of claim 2,
The elevating unit includes:
And a pair of supporting members whose upper end supports the inner receiving portion and whose lower end supports the outer receiving portion,
Wherein the support member is rotated by the motor bracket to adjust the height of the inner storage unit.
6. The method of claim 5,
And a roller for smoothly rotating the supporting member is provided at an end of the supporting member.
The method according to claim 1,
The drawing input /
A rack member disposed on both sides of the outer housing portion and extending in a direction of drawing out of the outer housing portion;
A pinion rotating along the rack member;
And a draw-out motor for providing rotational power to the pinion.
8. The method of claim 7,
The elevating unit includes:
A pair of support members each having a plurality of rotatable link structures, an upper end supporting the inner accommodating portion and a lower end supporting the outer accommodating portion;
A shaft connecting the pair of support members and adjusting a height of the pair of support members threaded by normal rotation;
And a lift motor for rotating the shaft,
Wherein the elevating motor starts operation in a state in which the external storage portion is completely drawn out by driving the draw-out input motor.
The method according to claim 1,
The drawing input /
motor;
A motor gear rotated by an axis of the motor;
A drive shaft extending parallel to an axis of the motor;
A driving gear provided on the driving shaft and selectively connected to the motor gear to transmit power to the driving shaft;
A pinion provided on the drive shaft and rotated together with the drive shaft, the pinion being moved along the draw-in / out guide;
A clutch disposed slidably along the drive shaft and selectively transmitting the rotational force of the motor to the pinion;
And a stopper formed of a metal material on one side of the clutch and adapted to move the clutch by a magnet provided on the outgoing inlet guide,
Wherein a gear portion is formed on the clutch, and the gear portion is selectively engaged with a transmission gear for transmitting power to the elevation unit in accordance with the movement of the clutch.
10. The method of claim 9,
Wherein the motor gear includes a first motor gear and a second motor gear disposed on the axis of the motor,
Wherein the drive gear includes a first drive gear which is disposed on the drive shaft and rotates together with the pinion and a second drive gear which rotates together with the clutch,
Wherein the first motor gear is engaged with the first drive gear and the second motor gear is engaged with the second drive gear according to the movement of the clutch.
11. The method of claim 10,
The drive shaft
A first driving unit having a polygonal cross-sectional shape and mounted with the first driving gear to rotate the driving shaft together with the driving force of the motor;
And a second driving unit having a circular cross-sectional shape and adapted to allow the second driving gear and the clutch to rotate independently of the driving shaft.
11. The method of claim 10,
Wherein the stopper is provided with an elastic member for elastically supporting the gear motor and the driving motor so as to return to their original engagement position.
10. The method of claim 9,
Wherein the magnet is provided at one point of the draw-in / out guide corresponding to the position of the clutch in a state in which the external storage portion is completely drawn out.
10. The method of claim 9,
The clutch
A first clutch formed with the gear portion to be engaged with the transmission gear,
A second clutch coupled to the stopper and selectively connected to the first clutch,
Wherein the first clutch and the second clutch are formed with cams having shapes corresponding to each other, and the cam portion slides and separates from each other when the housing member is lowered to separate the first clutch and the second clutch Device.
10. The method of claim 9,
The elevating unit includes:
A pair of support members each having a plurality of rotatable link structures, an upper end supporting the inner accommodating portion and a lower end supporting the outer accommodating portion;
And a shaft connecting the pair of support members and adjusting the height of the pair of support members threaded by normal and reverse rotation,
Wherein the shaft extends rearwardly through the outer receiving portion and is connected to the transmission gear to receive the power of the motor.
A cabinet in which a storage space is formed; And
And a drawer unit provided in the storage space,
The drawer device,
An external storage portion forming a space having an opened upper surface and being drawn in and out of the cabinet;
An inner storage unit that forms at least a part of a bottom surface of the storage space inside the outer storage unit and that is raised and lowered;
A draw-in / out unit provided on the inside of the cabinet for drawing out the external storage unit;
And an elevating unit operated after completion of withdrawal of the external storage portion by the draw-in / ejecting unit, and raising and lowering the inside storage portion inside the external storage portion.
17. The method of claim 16,
Wherein the cabinet includes a door that opens and closes the storage space and is coupled with the external storage unit to be drawn in and out.
18. The method of claim 17,
Wherein the door is opened and closed on the opened front face of the cabinet by pivoting the storage space,
Wherein the door is opened and closed independently of the draw-out port of the external storage portion.

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