KR102403815B1 - Refrigerator - Google Patents

Abstract

The present invention relates to a refrigerator provided with a drawer device and a drawer device that allow at least a portion of the inside of a drawer to be drawn out and automatically moved up and down after drawing out is completed by a user's manipulation.

Description

refrigerator { Refrigerator }

The present invention relates to a refrigerator.

BACKGROUND ART In general, a refrigerator is a home appliance that can store food at a low temperature in an internal storage space that is shielded by a door. It is configured to store food in an optimal state.

Such refrigerators are becoming larger and more multifunctional in accordance with changes in eating habits and user preferences, and refrigerators equipped with various structures and convenience devices for user convenience and freshness of stored food are being released.

In general, a drawer provided to be able to be drawn in and out may be provided in the interior space. In the drawer, food that needs to be stored separately, such as vegetables and fruits, may be stored, and the inside of the drawer may be opened and closed by a user's pulling-in/out operation.

When the drawer is provided at the lower end of the storage space, the user has to squat down or bow down to store food in the drawer, and there is a problem in that it is not easy to operate the drawer.

For the convenience of users, Korean Patent Laid-Open No. 10-2009-003332 discloses a refrigerator to which a drawer structure that can be automatically drawn in and out is applied. In addition, Korean Patent Laid-Open No. 10-2004-0093111 discloses a refrigerator to which a drawer structure capable of automatically ascending and descending is applied.

However, such prior art has a problem in that the withdrawal and elevating structures are configured separately, so that inconvenience in use still exists.

It is an object of the present invention to provide a refrigerator equipped with a drawer device capable of automatically taking out and lifting a drawer.

It is an object of the present invention to provide a refrigerator in which drawer withdrawal and raising/lowering can be automatically performed by one operation.

It is an object of the present invention to provide a refrigerator in which at least a portion of the inside of a drawer to be drawn in and out can be automatically moved up and down by a user's manipulation.

A refrigerator according to an embodiment of the present invention includes a cabinet in which a storage space is formed; an external accommodating part forming a space with an open upper surface; a rail connecting both sides of the external accommodating part and the cabinet and allowing the external accommodating part to be drawn in and out; an inner accommodating part forming at least a portion of the accommodating space inside the external accommodating part and being raised and lowered; a rack member provided in the storage space and extending in a withdrawal/intake direction of the external storage unit; a pull-out unit provided in the external accommodating part to be withdrawn together with the external accommodating part, and to withdraw and insert the external accommodating part in a front-rear direction; and an elevating unit provided in the external accommodating part to elevate the internal accommodating part, wherein the pull-out unit is provided in the external accommodating part, and generates power for drawing in and out of the external accommodating part and elevating the internal accommodating part. providing motor; a pinion moved along the rack member; and a clutch rotated by the motor and selectively connected to any one of the pinion and the elevating unit to transmit power, wherein the clutch is moved to be connected to the pinion in order to take out and insert the external accommodation unit, When the withdrawal of the external accommodating part is completed, it may be moved to be connected to the elevating unit.
The withdrawal unit may include: a motor gear rotated by a shaft of the motor; a drive shaft extending parallel to the shaft of the motor; and a drive gear provided on the drive shaft and selectively connected to the motor gear to transmit power to the drive shaft, wherein the clutch is slidably disposed along the drive shaft and moves to the pinion or the lifting unit. The rotational force of the motor may be selectively transmitted, but a gear part is formed in the clutch, and the gear part may be selectively connected to a connection gear provided at an end of a connection shaft for transmitting power to the elevating unit according to movement of the clutch. .
The motor gear includes a first motor gear and a second motor gear spaced apart from each other on a shaft of the motor, wherein the driving gear is spaced apart from the driving shaft and rotates together with the pinion. and a second driving gear rotated together with the clutch, wherein the first motor gear may be coupled to the first driving gear according to the movement of the clutch, and the second motor gear may be coupled to the second driving gear.
The drive shaft has a polygonal cross-sectional shape, a first drive part to which the first drive gear is mounted to rotate the drive shaft together by a driving force of the motor, and a circular cross-sectional shape, wherein the second drive gear and the clutch are It may include a second driving unit to be able to rotate independently of the driving shaft.
A magnet is provided on one side of the rack member corresponding to the position of the clutch in a state in which the external receiving part is completely drawn out, and a stopper is formed of a metal material on one side of the clutch, and the stopper moves the clutch by the magnetic force of the magnet. may be provided.
The stopper may be provided with an elastic member for elastically supporting the motor gear and the driving gear to return to the original coupling position.
The clutch includes a first clutch in which the gear unit coupled to the connection gear is formed, and a second clutch coupled to the stopper and selectively coupled to the first clutch, the first clutch and the second clutch Cam portions having a shape corresponding to each other are formed in the , and the cam portions slide apart from each other when the lowering of the inner accommodation portion is completed to separate the first clutch and the second clutch.
The lifting unit may include: a lifting shaft extending in a vertical direction and having a screw thread formed on an outer surface thereof; an elevating member penetrating by the elevating shaft and elevating by the rotation of the elevating shaft, the elevating member being connected to the inner accommodating part; a lifting gear provided at a lower end of the lifting shaft; a connecting shaft extending in a direction crossing the lifting shaft and transmitting a rotational force of the withdrawing/introducing unit to the lifting shaft; It is provided at both ends of the connecting shaft, and may include a connecting gear respectively connected to the clutch and the lifting gear.
Elevating guides recessed in an inward direction are provided on both side surfaces of the external accommodation unit, and the elevating shaft may be accommodated in an inner space of the elevating guide.
Elevation guide grooves that are recessed in a shape corresponding to the elevating guide may be formed on both sides of the inner accommodation unit.
A receiving unit frame supporting the inner receiving unit may be formed on a lower surface of the inner receiving unit, and frame coupling units protruding outwardly and coupled to the lifting member may be further formed on both sides of the receiving unit frame.
The connection shaft may pass through the rear surface of the external accommodation part and be disposed to connect the clutch and the lifting gear.
Rails extending in multiple stages may be provided on both sides of the external accommodating part so that the external accommodating part is supported so that the external accommodating part can be drawn in and out.
The cabinet may include a door that opens and closes the storage space and is coupled to the external storage unit to be drawn in and out together.
A door that opens and closes the storage space by rotation and shields the external accommodating part is mounted on the opened front surface of the cabinet, and the door can be opened and closed independently of the take-out and entry of the external accommodating part.

delete

delete

delete

delete

delete

delete

delete

delete

delete

delete

delete

delete

delete

delete

delete

delete

delete

delete

The refrigerator according to an embodiment of the present invention can expect the following effects.

The drawer device of the refrigerator according to an embodiment of the present invention is configured so that a part of the drawer device can be moved up and down after being pulled out by a user's operation. Therefore, when the drawer device is disposed at the lower portion, there is an advantage that the user does not need to excessively bend the waist or apply excessive force to lift the stored items when food is stored in the drawer device, so the convenience of use can be dramatically improved. .

In particular, the drawer device can be lifted after being withdrawn to the outside through one operation, and can be retracted after being lowered through another operation, thereby maximizing the convenience of use.

In addition, the drawer device is configured so that the external external storage unit is drawn out and the internal and external storage unit is configured to be raised and lowered, so that the food inside the drawer device can be pulled out and moved in and out without the entire storage device being pulled out and moved up and down. And it is possible to simplify the configuration for elevating, there is an advantage that can secure the safety in use.

In addition, the drive assembly for drawing in and lowering the drawer device may have a simple configuration, and in particular, both drawing out and lifting of the drawer device are possible through one drive assembly, thereby reducing manufacturing cost and improving productivity. can be expected In addition, there is an advantage in that the loss of the storage space of the storage device can be minimized due to the simple configuration of the driving assembly.

1 is a perspective view of a refrigerator according to a first embodiment of the present invention.
2 is a view showing a state in which the door of the refrigerator is opened.
3 is a view showing a state in which the drawer device according to the first embodiment of the present invention is withdrawn.
4 is a view showing a state in which a part of the drawer device is lifted.
5 is an exploded perspective view of the drawer device.
6 is a view showing the operation state of the withdrawal unit in a state in which the storage device is withdrawn.
7 is a view showing an operation state of the withdrawal unit in a state in which the storage device is lifted.
8 is a view illustrating an operation state of the lifting unit in a state in which the storage device is retracted.
9 is a view schematically showing a state in which the drawer device is retracted.
10 is a view schematically showing a state in which the drawer device is withdrawn.
11 is a view schematically showing a state in which the drawer device is lifted.
12 is an exploded perspective view of a drawer device according to a second embodiment of the present invention.
13 is a front view of a refrigerator according to a third embodiment of the present invention.
14 is a view showing an open door of the refrigerator.
15 is a view showing a state of withdrawal and elevating operation of the storage device according to the third embodiment of the present invention.

Hereinafter, specific embodiments of the present invention will be described in detail with drawings. However, it cannot be said that the spirit of the present invention is limited to the embodiments presented, and other degenerative inventions or other embodiments included within the scope of the spirit of the present invention can be easily achieved by adding, changing, or deleting other components. can suggest

In the embodiment of the present invention, for convenience of explanation and understanding, a bottom freezer type refrigerator in which a freezing compartment is provided below a refrigerating compartment is described as an example, but the present invention is not limited thereto, and any It should be clarified in advance that it can be applied to a type of 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. And, FIG. 2 is a view showing a state in which the door of the refrigerator is opened.

The refrigerator 1 according to an embodiment of the present invention may have an external shape formed 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 vertically by a barrier 11 , a refrigerating compartment 12 may be formed at an upper portion of the cabinet 10 , and a freezing compartment 13 may be formed at a lower portion of the cabinet 10 . can be formed. In addition, various storage members such as shelves, drawers or baskets may be provided inside the refrigerating compartment 12 and the freezing compartment 13 . The refrigerating compartment 12 and the freezing compartment 13 may be referred to as an upper storage space or a lower storage space.

The door may include a refrigerator compartment door 20 and a freezer compartment door 30 . The refrigerating compartment door 20 opens and closes the opened front of the refrigerating compartment 12 by rotating, and the freezing compartment door 30 opens and closes the opened front of the refrigerating compartment 13 by sliding pull-out. have. In addition, the refrigerating compartment door 20 may be referred to as an upper door, and the freezing compartment door 30 may be referred to as a lower door.

The refrigerating compartment door 20 may be configured as a pair, and each of the refrigerating compartment doors 20 may open and close the opened front portion of the refrigerating compartment 12 by rotation. In addition, a dispenser 21 for dispensing water or ice may be provided on the front side of the refrigerator compartment door 20 on one side (left side in FIG. 1 ). In addition, an ice-making chamber 22 provided with an ice maker may be formed on the rear surface of the refrigerator compartment door 20 provided with the dispenser 21 . The living ice making chamber 22 may form an insulating space independent of the refrigerating chamber 12 and may have an openable and openable structure.

A display 23 for displaying the operating state of the refrigerator 1 may be provided on one side of the dispenser 21 . In addition, a manipulation unit 231 for controlling the operation of the refrigerator 1 may be provided on one side of the display 23 . The manipulation unit 231 may be spherical in a button method or a touch method.

The refrigerating compartment door 20 on the other side (right side in FIG. 1) of the refrigerating compartment door 20 may have a see-through portion 24 through which the space behind the refrigerating compartment 12 can be seen through. According to a user's operation, the see-through unit 24 may be selectively made transparent or opaque, and may be configured to enable display of information and touch input as necessary. The refrigerating compartment door 20 opens and closes the refrigerating compartment 12, a main door 201 having an auxiliary storage space formed in a central opening, and opens and closes the opening of the main door 201, and the see-through part 24 It may be composed of a sub-door 202 formed. The main door 201 and the sub-door 202 may be configured to be rotatable in the same direction.

The freezing compartment door 30 may be provided on the front side of the freezing compartment 13 , and may be configured to be integrated with the external storage unit 31 provided on the rear surface of the freezing compartment door 30 to be withdrawn. The entire configuration, including the freezer compartment door 30 and the external accommodating part 31 , may be referred to as a drawer device. Of course, the drawer device may be separated from the freezing compartment door 30 to refer only to the external storage unit 31 .

An upper basket 131 may be provided at an inner upper end of the freezing compartment 13 . The upper basket 131 is also configured to be able to be drawn in and out in the front and rear directions, and can be drawn in and out independently after the freezing compartment door 30 is opened.

3 is a view showing a state in which the drawer device according to the first embodiment of the present invention is withdrawn. And, Figure 4 is a view showing a state that a part of the drawer device is lifted.

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

The front surface of the freezer compartment door 30 may form the front exterior of the refrigerator 1 when the freezer compartment door 30 is closed, and may be formed of a metal material. In addition, a handle 32 for opening and closing the freezing compartment door 30 may be provided at the upper front end of the freezing compartment door 30 .

In addition, the handle 32 may further include a handle operation unit 321 for automatic withdrawal and/or lifting of the freezing compartment door 30 . The handle manipulation unit 321 may be configured as a button type for a user's manipulation input, and may include a sensor for sensing a user's touch or manipulation.

The external accommodating part 31 may be formed in a basket shape with an open upper surface, and may be fixedly mounted to a frame provided on the rear surface of the freezing compartment door 30 . Although not shown in detail, the frame may be formed in a rectangular frame shape and disposed around the external accommodating part 31 , and the external accommodating part 31 may be detachably attached to the frame.

In addition, drawing out and lifting of the drawer device are possible by the manipulation of the manipulation unit 231 or the handle manipulation unit 321 . The drawing-out and elevating operation of the drawer device may be independently performed as one operation of drawing-out, raising, and lowering according to the operation form of the manipulation unit 231 or the handle manipulation unit 321, and may be performed as a single operation. At least one operation of withdrawing, ascending, descending, and withdrawing may be continuously performed.

In addition, rails 33 may be provided on both sides of the external accommodating part 31 . The rail 33 is for pulling out the freezer compartment door 30 and the external accommodating part 31, which are drawn out to the outside, and may be composed of a metal rail drawn out in multiple stages.

Drawer guides 132 to which the rails 33 are fixed may be formed on both inner side surfaces of the freezing compartment 13 . One end of the rail 33 may be fixedly mounted to the drawer guide 132 , and the rail 33 extends in multiple stages so that all or most of the external accommodation unit 31 is in the freezer compartment 13 . Allow it to be withdrawn outside. By the coupling of the drawer guide 132 and the rail 33 , the external accommodating part 31 may be substantially supported to be drawn in and out.

The drawer device may be composed of an external accommodating part and an internal accommodating part 35 coupled to the freezing compartment door 30, and the external accommodating part is drawn out in the front-rear direction, and the internal accommodating part 35 is lifted up and down in the vertical direction. It can be configured to The drawing-in/out of the external accommodating part and the raising/lowering of the internal accommodating part 35 may be sequentially performed by a driving assembly (40 in FIG. 5 ).

The drawer device can be withdrawn as shown in FIG. 3 by the driving of the driving assembly 40, and after the drawer device is pulled out, the inner receiving part 35 including a bottom surface inside the outer receiving part 31 ) may be raised to be in the same state as in FIG. 4 . That is, as shown in FIG. 4 , in a state in which the internal storage part 35 is raised, it is possible for the user to take out the food stored in the internal storage part 35 without bending the waist much.

The internal accommodating part 35 is provided inside the external accommodating part 31 and may include at least a portion of an inner bottom surface of the external accommodating part 31. The internal accommodating part 35 is formed in a plate shape. can be In addition, the inner accommodating part 35 may extend upward in addition to the inner bottom surface of the external accommodating part 31 to form at least a portion of the inner circumferential surface.

Meanwhile, a lifting guide 311 for guiding the vertical movement of the inner accommodation part 35 may be formed on both left and right sides of the external accommodating part 31 . The lifting guide 311 may protrude from both left and right sides of the inner surface of the external accommodating part 31 , and may extend from a lower end to an upper end of the external accommodating part 31 .

In addition, a guide groove 311a cut in a vertical direction may be formed in the center of the elevating guide 311 , and a part of the inner accommodation part 35 is penetrated to move up and down along the guide groove 311a. can do. And, although not shown in detail, the inner side of the elevating guide 311 may be shielded so that foreign substances are not introduced when the inner accommodating part 35 is elevating.

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

5 is an exploded perspective view of the drawer device.

As shown in the drawing, the drawer device may include the external accommodating part 31 and a driving assembly 40 mounted to the external accommodating part 31 .

The inner accommodating part 35 may be accommodated inside the external accommodating part 31 . The internal accommodating part 35 may be guided upward and downward by the circumferential surface of the external accommodating part 31, and may be raised and lowered in a state in which the food accommodated in the external accommodating part 31 is seated. .

The internal accommodating part 35 may be formed in a plate shape to form a part of the bottom surface of the external accommodating part 31 , wherein the width of the internal accommodating part 35 is the inner width of the external accommodating part 31 . may be formed to correspond to In addition, the inner accommodating part 35 may be formed in a basket shape accommodated on the inner surface of the external accommodating part 31 .

In addition, a receiving unit frame 34 for supporting the inner receiving unit 35 to be lifted may be provided on a lower surface of the inner receiving unit 35 . The accommodating part frame 34 may be formed in a rectangular frame shape, and may support the circumference of the internal accommodating part 35 .

Frame coupling parts 341 may be formed at both ends of the housing frame 34 , and the frame coupling parts 341 protrude outward and are inserted into the guide groove 311a to insert the lifting unit 50 . ) may be combined with the lifting member 522 constituting the.

Meanwhile, elevating guide grooves 351 may be formed at both ends of the inner accommodating part 35 . The elevating guide groove 351 may be formed at a position corresponding to the elevating guide 311 , and may be depressed in a shape corresponding to the elevating guide 311 . Therefore, when the inner accommodating part 35 is raised and lowered, the internal accommodating part 35 is not tilted or tilted to one side by the combination of the elevating guide groove 351 and the elevating guide 311 in the vertical direction. can be lifted effectively.

The elevating guide 311 may be formed by a recessed wall surface of the external accommodating part 31 , and the elevating shaft 52 constituting the driving assembly may be accommodated in an inner space of the elevating guide 311 . The upper and lower ends of the lifting shaft 52 may be rotatably supported in the space inside the lifting guide 311 . In addition, a guide cover 312 is mounted on the opened outer surface of the lifting guide 311 to shield the inner space of the lifting guide 311 .

The driving assembly 40 for pulling out and lifting the drawer device may be disposed inside and outside the external receiving part 31 . The driving assembly 40 may be composed of a pull-out unit 40 and an elevating unit 50 as a whole.

In detail, the drawer/intake unit 40 may be provided on the bottom surface of the inner space of the cabinet 10 or on the rear of the external accommodating part 31 . The withdrawal unit 40 includes a motor 41 that provides power, a motor gear 43 rotated by the motor 41 , and a driving gear 45 rotated in assembly in combination with the motor gear 43 . , it may include a clutch 47 that is selectively rotated according to the connection of the driving gear 45 , and a pinion 42 and a rack member 133 .

A portion of the withdrawal unit 40 may be accommodated inside the withdrawal unit case 401 , and components other than the rack member 133 are fixed to the side or rear wall surface of the external storage unit 31 . can be mounted That is, the withdrawal unit case 401 may be mounted on the external accommodating part 31 , and when the external accommodating part 31 is pulled out and pulled out together, the withdrawing and receiving unit case 401 is guided by the rack member 133 . can be In addition, the withdrawal/intake unit 40 may be provided on both sides of the external receiving unit 31 , respectively.

The rack member 133 may be provided on both side walls inside the freezing compartment 13 . The rack member 133 may extend in a direction in which the external accommodating part 31 is withdrawn, and the external accommodating part 31 is fully withdrawn to extend to a distance where the internal accommodating part 35 can elevate. can In addition, gear teeth are formed in the rack member 133 to be coupled to the pinion 42 , and may be continuously formed from the front end to the rear end of the rack member 133 . The pinion 42 may be moved along the rack member 133 . That is, when the pinion 42 is rotated by the driving of the motor 41 , the pinion 42 moves along the rack member 133 , and the external receiving part 31 can be drawn in and out. On the other hand, except for the rack member 133, the rest of the configuration of the withdrawal unit 40 will be looked at in more detail below.

The lifting unit 50 may include a connection shaft 51 coupled to the clutch 47 to transmit rotation, and an elevation shaft 52 coupled to the connection shaft 51 and rotated. The connecting shaft 51 may be configured to connect between the clutch 47 and the elevating shaft 52 . In addition, at both ends of the connecting shaft 51, connecting gears 511 in the form of bevel gears may be provided. The pair of connecting gears 511 may be coupled to the clutch 47 and the lifting shaft 52 , respectively, so that rotational power of the clutch 47 may be transmitted to the lifting shaft 52 .

To this end, the length of the connecting shaft 51 may be formed to extend from the clutch 47 to the end of the elevating shaft 52 . In addition, the connecting shaft 51 may extend through shaft holes 513 and 514 formed in the lower portion of the external receiving part 31 , and may extend to the inside of the elevating guide 311 . The connecting gear 511 of the connecting shaft 51 and the end of the elevating shaft 52 may be coupled to each other inside the elevating guide, and the rotational force of the connecting shaft 51 is transferred to the elevating shaft 52 . can transmit Also, if necessary, the connecting gear 511 may be formed of a different gear structure that is rotatable by being coupled to the clutch 47 and the lifting shaft 52 instead of a bevel gear.

The elevating shaft 52 may be provided inside the space formed by the elevating guide 311 , and upper and lower ends may be rotatably supported by the external accommodating part 31 . A screw thread shape may be formed on the entire outer surface of the elevating shaft 52 , and the elevating member 522 may be mounted through the elevating shaft 52 . Accordingly, according to the rotation of the lifting shaft 52 , the lifting member 522 may move vertically along the lifting shaft 52 . In addition, the lifting member 522 may be coupled to the frame coupling part 341 , and the inner accommodation part 35 may be moved up and down by the vertical movement of the lifting member 522 .

Meanwhile, a lifting gear 521 may be provided at a lower end of the lifting shaft 52 . The lifting gear 521 may be connected to cross the connecting gear 511 to have a rotatable structure. That is, the lifting gear 521 may be configured as a bevel gear like the connecting gear 511 , and when the connecting shaft 51 is rotated by the coupling of the lifting gear 521 and the connecting gear 511 . The lifting shaft 52 may be rotated together.

Hereinafter, the structure and operation of the pull-out unit constituting the drive assembly will be described in more detail with reference to the drawings.

6 is a view showing the operation state of the withdrawal unit in a state in which the storage device is withdrawn. And, FIG. 7 is a view showing the operation state of the withdrawal unit in a state in which the storage device is lifted. And, FIG. 8 is a view showing an operation state of the lifting unit in a state in which the storage device is retracted.

As shown in the figure, the pull-out unit 40 of the drive assembly includes a motor 41, a motor gear 43, a drive shaft 44, a drive gear 45, a clutch 47, and a pinion ( 42) may be included.

Looking at this in more detail, the motor 41 is mounted on the external accommodating part 31 , and provides power for drawing in and out of the external accommodating part 31 and lifting and lowering the internal accommodating part 35 . And a motor gear 43 is mounted on the motor shaft 411 of the motor 41 and rotates together when the motor 41 is driven.

The motor gear 43 may include a first motor gear 431 and a second motor gear 432, and the first motor gear 431 and the second motor gear 432 may be disposed to be spaced apart from each other. have. The first motor gear 431 and the second motor gear 432 may be integrally formed, or may be configured to be spaced apart from each other on the motor shaft 411 after being formed. In addition, the first motor gear 431 has a larger diameter than the second motor gear 432 and is positioned closer to the motor 41 .

The driving shaft 44 may be disposed parallel to the motor shaft 411 and may extend to the rack member 133 formed on the inner sidewall of the refrigerator. The drive gear 45 , the clutch 47 , and the pinion 42 may all be mounted on the drive shaft 44 .

Meanwhile, the driving shaft 44 is formed in a single shaft structure, but may have structures having different cross-sectional shapes. In detail, the driving shaft 44 extends from one end close to the motor 41 and includes a first driving part 441 having a polygonal cross-sectional shape, and extending from the first driving part 441 to the pinion 42 side, and having a circular shape. It may be composed of a second driving unit 442 having a cross-section. Accordingly, the first driving gear 451 mounted on the first driving unit 441 may rotate together with the driving shaft 44, and the second driving gear 452 mounted on the second driving unit 442 and The clutch 47 may be rotated independently of the drive shaft 44 about the drive shaft 44 .

In addition, the driving gear 45 may include a first driving gear 451 and a second driving gear 452 . The first driving gear 451 and the second driving gear 452 may be spaced apart from each other, and the diameter of the first driving gear 451 may be smaller than the diameter of the second driving gear 452 . have. In addition, the driving gear 45 , that is, the first driving gear 451 and the second driving gear 452 may slide along the driving shaft 44 , and the first driving gear 451 is the first driving gear 451 . The motor gear 431 and the second driving gear 452 may be selectively connected to the second motor gear 432 . That is, the first driving gear 451 and the second driving gear 452 are connected to the first motor gear 431 or the second motor gear 432 depending on the state of sliding along the driving shaft 44 . ) can be connected to

In detail, the first driving gear 451 may be mounted on the first driving unit 441 . At this time, as shown in the cross section A-A', the center of the first driving gear 451 may be formed in the same polygonal shape as the cross-section of the first driving unit 441 , and thus, when the driving shaft 44 is rotated, the 1 The driving gear 451 may be rotated together. In other words, in a state in which the first driving gear 451 and the first motor gear 431 are connected, the driving shaft 44 may be rotated when the motor 41 is driven, and a rotational force through the driving shaft 44 . transmission is possible. In addition, the first driving part 441 is formed to have a predetermined width so that the first driving gear 451 can slide along the driving shaft 44 toward the pinion 42 to enable the first driving Selective connection between the gear 451 and the first motor gear 431 is possible.

On the other hand, a first connection part 451a protruding toward the pinion 42 may be formed on one side of the first driving gear 451, and a second connection part on which the second driving gear 452 is mounted ( 452a). Accordingly, when the first driving gear 451 and the second driving gear 452 are slidably moved along the driving shaft 44 , they may be moved while maintaining a predetermined distance from each other.

Meanwhile, the second driving gear 452 may be mounted on the second connection part 452a mounted on the second driving part 442 . The second connecting part 452a is formed so that the inside is hollow, and as can be seen from the cross section B-B', since it is mounted on the second driving part 442 of the circular cross section, the second driving part 442 is free as an axis. It may be configured to be rotatable.

In addition, one end of the second connection part 452a facing the motor 41 is coupled to the first connection part 451a, and the first driving gear 451 and the second driving gear 452 are to be able to slide together. The first connection part 451a and the second connection part 452a may be rotatably connected to each other, and thus, the first driving gear 451 and the second driving gear 452 can rotate independently.

In addition, a clutch 47 may be disposed at the other end of the second connection part 452a facing the pinion 42 . Accordingly, the second connection portion 452a and the clutch 47 may be configured to slide and rotate together along the drive shaft 44 .

The second driving gear 452 may be disposed on the second connection part 452a and may have a larger diameter than that of the first driving gear 451 . In this case, the diameter of the second driving gear 452 may be formed to be engaged with the second motor gear 432 when the second driving gear 452 slides.

Meanwhile, a drive shaft sleeve 442 may be formed inside the second connection part 452a. The driving shaft sleeve 442 may be formed so that a center thereof is penetrated by the driving shaft 44 , and the driving shaft 44 may be formed to rotate and slide inside the driving shaft sleeve 442 . In addition, the drive shaft sleeve 442 may extend from the inside of the second connection part 452a to the end of the clutch 47 or the drive shaft stopper 475 .

One end of the drive shaft sleeve 442 inside the second connection part 452a is bent outwardly to form a first spring support part 461 . In addition, a first spring 462 may be provided on the first spring support part 461 . One end of the first spring 462 may be supported by the first spring support part 461 , and the other end may be supported by one side of the second connection part 452a or one side of the clutch 47 . Accordingly, when the clutch 47 is moved in the direction toward the motor 41, it can be compressed, thereby providing an elastic force for the clutch 47 to return to its original position.

The clutch 47 is for switching to the first motor gear 431 and the first driving gear 451 in a state in which the second motor gear 432 and the second driving gear 452 are connected, and the driving shaft It may be rotatably mounted on the second driving part 442 of (44). The clutch 47 may be rotatably coupled with the second connection part 452a.

In detail, the clutch 47 includes a first clutch 471 in contact with the second connection part 452a and a second clutch 471 coupled to the first clutch 471 in a cam structure, and coupled to the drive shaft stopper 475 . It may be configured as a clutch 472 .

The first clutch 471 may be coupled to the second connection part 452a or may be configured integrally with the second connection part 452a, and may be configured to rotate together when the second connection part 452a rotates forward and reverse. have. In addition, a first cam portion 473 may protrude from one side of the first clutch 471 , and a vertical surface 473a and an inclined surface 473b may be formed on the first cam portion 473 , so that the first Depending on the rotation direction of the clutch 471 , the driving force may be transmitted to the second clutch 472 or may be spaced apart from the second clutch 472 .

Also, a gear portion 471a may be formed on one side of the first clutch 471 . The gear part 471a may be formed in the shape of a bevel gear, and has a structure that can be connected to the connecting gear 511 . That is, according to the movement of the first clutch 471 , the gear portion 471a of the first clutch 471 may be selectively connected to the connecting gear 511 , and the connected gear 511 may be connected to the gear unit 471a. It is possible to selectively transmit power to the lifting unit 50 .

The second clutch 472 is formed to be in contact with the first clutch 471, and a second cam portion ( 474) may be formed. The second cam part 474 may have a vertical surface 474a and an inclined surface 474b having a shape corresponding to that of the first cam part 473 . Accordingly, when the first clutch 471 rotates in the forward direction, the vertical surfaces 473a and 474a of the first cam part 473 and the second cam part 474 come into contact with each other, so that the first clutch 471 and the second clutch 471 are in contact with each other. 472 can be rotated together. In addition, when the first clutch 471 rotates in the reverse direction, the inclined surfaces 473b and 474b of the first cam part 473 and the second cam part 474 come into contact with each other, so that the first clutch 471 and the second cam part 471 are in contact with each other. Clutches 472 may be spaced apart from each other.

The drive shaft stopper 475 may be provided on one side of the second clutch 472 . The drive shaft stopper 475 may support the second clutch 472 at one end, and it may also be possible to be integrally formed with the second clutch 472 .

The second clutch 472 may be formed in a plate shape having a predetermined size. In addition, at least a portion of the second clutch 472 may be formed of a metal material that can be attached to a magnet. And, the rack member 133 may be provided with a magnet (133b). The magnet 133b is positioned at the front end of the rack member 133, that is, at a position corresponding to the position of the pinion 42 or the drive shaft stopper 475 when the external receiving part 31 reaches the fully drawn out position. can be mounted

Accordingly, when the drive shaft stopper 475 reaches a position where the external receiving part 31 is completely drawn out when the pinion 42 moves along the rack member 133, it will be attached to the magnet 133b. It can be formed so that

That is, the drive shaft stopper 475 is spaced apart from the rack member 133 and maintains a predetermined interval while the external accommodating part 31 is withdrawn, and the moment the external accommodating part 31 is completely withdrawn, the The drive shaft stopper 475 may be moved and attached to the rack member 133 by the magnet. At this time, not only the drive shaft stopper 475 but also the drive gear 45 and the clutch 47 on the drive shaft 44 slide along the drive shaft 44 toward the rack member 133, and at this time, the motor gear ( 43) and the conversion of the connection relationship between the driving gear 45 is made.

Meanwhile, a second spring 476 may be provided on one side of the drive shaft stopper 475 . The second spring 476 may provide an elastic force to allow the drive shaft stopper 475 to be separated from the magnet 133b and return to its original position. To this end, one end of the second spring 476 may contact the drive shaft stopper 475 , and the other end may contact the second spring support part 421 fixed on the drive shaft 44 . The second spring support 421 may be fixedly mounted on the drive shaft 44 as a separate material, or may be integrally formed with the pinion 42 .

A pinion 42 may be mounted at an end of the driving shaft 44 . The pinion 42 may be mounted on the driving shaft 44 so that it can be rotated together with the rotation of the driving shaft 44 . And, it is seated on the upper end of the rack member 133 and is gear-coupled with the gear teeth 133a of the rack member 133 to be able to move forward and backward along the rack member 133 .

Hereinafter, the drawer device according to an embodiment of the present invention having the above configuration will be described with reference to the drawings with respect to the operation of the drawer device and the driving assembly according thereto.

9 is a view schematically showing a state in which the drawer device is retracted. And, FIG. 10 is a view schematically showing a state in which the drawer device is drawn out. And, Figure 11 is a view schematically showing a state in which the drawer device is lifted.

In a state in which the external accommodating part 31 is completely drawn into the interior space before the user's operation, the driving assembly is in a state as shown in FIG. 6 . At this time, the first motor gear 431 is connected to the first driving gear 451 .

In such a state, when the user's input for withdrawing and lifting the storage device is started, the motor 41 is driven and the driving shaft 44 is moved in the forward direction by the first motor gear 431 and the first driving gear 451 . will rotate to When the driving shaft 44 rotates in the forward direction, the pinion 42 connected to the driving shaft 44 also rotates in the forward direction, and moves forward along the rack member 133 to the front of the external receiving part 31 . Withdrawal may proceed.

Meanwhile, at this time, the second driving gear 452 is not connected to the second motor gear 432 , and the second driving gear 452 and the clutch 47 are connected to the second driving unit 442 . Since it is connected, it is not rotated independently of the rotation of the driving shaft 44 . In addition, the first clutch 471 is in a state in which power is not transmitted to the connecting gear 511 side while being spaced apart from the connecting gear 511 .

And, according to the rotation of the driving shaft 44, the pinion 42 connected to rotate together with the driving shaft 44 is rotated. The pinion 42 is positioned at the rear end of the rack member 133 as shown in FIG. 6 in a state in which the external receiving part 31 is retracted. When the pinion 42 is rotated by the driving of the motor 41 , the pinion 42 moves forward along the rack member 133 . And, as the pinion 42 moves forward along the rack member 133 , the external receiving part 31 may also be drawn forward, and the rail 33 may be extended.

At this time, since the clutch 47 and the connecting gear 511 are separated from each other, the internal accommodating part 35 maintains a state in which no power is supplied to the elevating unit 50 and the external accommodating part 31 . is located at the lowest position on the inner side of That is, the inner accommodating part 35 is not raised or lowered while the external accommodating part is withdrawn.

By the continuous operation of the motor 41 , the external housing 31 may be in a fully drawn out state as shown in FIG. 10 . The external accommodating part 31 may be drawn out to a distance that the rail 33 can be extended to the maximum. In this case, the withdrawable distance is such that, when the internal storage unit 35 is raised and lowered, the food stored in the internal storage unit 35 or the internal storage unit 35 is withdrawn to a distance that does not interfere with other components of the refrigerator 1 . can That is, the external accommodating part 31 is completely drawn out from the inside of the freezing compartment 13 so that any interference with other components does not occur when the internal accommodating part 35 is moved up and down. Of course, if the width in the front-rear direction of the inner accommodation part 35 is made smaller, even if the outer accommodation part 31 is not completely drawn out, interference can be avoided even when the inner accommodation part 35 is moved up and down.

When the front withdrawal of the external accommodating part 31 is completed, the pinion 42 may be positioned most forwardly on the rack member 133 . Then, the rail 33 is in a fully extended state, and the external receiving part 31 is in a state in which it cannot be withdrawn further forward.

As shown in FIG. 10 , the pinion 42 reaches the end of the rack member 133 or a specific position of the rack member 133 in a state in which the external accommodating part 31 is completely withdrawn. At this time, a magnet is disposed on the rack member 133 , and accordingly, the drive shaft stopper 475 moves toward the rack member 133 by magnetic force, resulting in a state as shown in FIG. 7 . At this time, the second spring 476 supporting the drive shaft stopper 475 may be in a compressed state by the movement of the drive shaft stopper 475 .

In addition, both the first driving gear 451 and the clutch 47 connected to the second connection part 452a horizontally move toward the pinion 42 . That is, both the drive gear 45 and the clutch on the drive shaft 44 slide toward the pinion 42 along with the movement of the drive shaft stopper 475 .

Accordingly, the motor gear 43 and the driving gear 45 may be switched to a state in which the second motor gear 432 and the second driving gear 452 are coupled to each other. In this state, the second driving gear 452 rotates in the forward direction, and the clutch connected to the second driving gear 452 also rotates in the forward direction.

Meanwhile, by the movement of the clutch 47 , the gear portion 471a of the first clutch 471 and the connecting gear 511 are engaged with each other. Also, the connecting gear 511 may also be rotated by the rotation of the clutch 47 , and power may be transmitted to the lifting unit 50 through the connecting gear 511 .

In detail, when the connecting gear 511 is rotated by the clutch 47 as shown in FIG. 7 , the connecting shaft 51 is also rotated. And, the connecting gear 511 of the other end of the connecting shaft 51 is rotated by the rotation of the connecting shaft 51, and the lifting gear 521 is in a rotatable state due to the rotation of the connecting gear 511. . By the rotation of the lifting shaft 52 , the lifting member 522 moves upward along the lifting shaft 52 , and the inner accommodation part 35 is raised.

As shown in FIG. 11 , when the forward rotation of the clutch 47 is transmitted to the lifting unit 50 , the height of the lifting unit 50 is increased, and thus the inner accommodation part 35 is also the outer It rises from the inside of the accommodating part 31 . In addition, when the inner accommodating part 35 reaches the maximum height or a set height, the driving of the motor 41 may be stopped. In addition, the user may perform an operation of accommodating the food in the inner accommodating part 35 .

The motor 41 may be driven by a driving time control or a sensor device that detects the height of the internal housing 35, and is stopped when the internal housing 35 rises or descends to a set height. can

On the other hand, both the second driving gear 452 and the clutch 47 are connected to the second driving part 442 of the driving shaft 44 to be rotatable about the driving shaft 44 . Therefore, power is not transmitted to the driving shaft 44 , so that the pinion 42 does not rotate, and the external receiving part 31 maintains the maximum withdrawal state.

When the user inputs the lowering and retracting manipulations of the drawer device in a state in which the internal accommodating part 35 is finished rising and stopped, the motor 41 starts to be driven. At this time, the motor 41 rotates in the opposite direction to that when the inner accommodation part 35 is raised.

Due to the reverse rotation of the motor 41, the second driving gear 452 and the clutch 47 also rotate in the reverse direction. In addition, the clutch 47 is pressed by the first spring 462 and the first clutch 471 and the second clutch 472 rotate in reverse while maintaining the coupled state.

Due to the reverse rotation of the clutch 47, the connecting gear 511, which maintains a state coupled to the gear portion 471a of the first clutch 471, also rotates in reverse, and moves to the lifting unit 50. power will be transmitted. The height of the lifting unit 50 is lowered by the reverse rotation of the connecting gear 511 , and the height of the inner accommodation part 35 is also lowered.

By the continuous driving of the motor 41, the inner accommodating part 35 can be lowered to the lowest height. On the other hand, as shown in FIG. 8 in a state in which the inner accommodation part 35 is lowered to the lowest height and cannot be lowered any further, even if the motor 41 is further rotated, the second driving gear 452 and the clutch 47 is prevented from rotating, and force is applied to the inclined surfaces 473b and 474b of the first clutch 471 and the second clutch 472 . Accordingly, the first clutch 471 moves toward the motor 41 while compressing the first spring 462 .

The first driving gear 451 also moves toward the motor 41 by the movement of the first clutch 471 , and as a result, the first driving gear 451 meshes with the first motor gear 431 . become a state

When the motor 41 rotates in a state in which the first motor gear 431 and the first driving gear 451 are meshed with each other, the first driving gear 451 rotates in reverse, and the driving shaft 44 The pinion 42 connected to also rotates in reverse.

The pinion 42 moves rearward along the rack member 133 , and the drive shaft stopper 475 is momentarily separated from the magnet 133b. Then, the drive shaft stopper 475 and the second clutch 472 are returned to the motor 41 side by the elastic force of the second spring 476 , and the first clutch 471 and the second clutch 472 is again coupled to each other as in FIG. 15 .

In this state, the first driving gear 451 and the pinion 42 continue to rotate in reverse, and the external receiving part 31 may be retracted to the inside of the cabinet. When the retraction of the external receiving part 31 is completed, the motor 41 may stop driving to complete the operation. In this case, the completion of driving of the motor 41 may be achieved by controlling the driving time of the motor 41 or a sensing device sensing the position of the external housing 31 .

Meanwhile, the present invention may be capable of various other embodiments in addition to the above-described embodiments. Hereinafter, other embodiments of the present invention will be described with reference to the respective drawings. In addition, in each of the other embodiments, the same reference numerals are used for the same components as those of the above-described embodiments, and detailed descriptions thereof will be omitted.

12 is an exploded perspective view of a drawer device according to a second embodiment of the present invention.

As shown in the drawing, the drawer device 30 according to the second embodiment of the present invention may include an external accommodating part 31 and an internal accommodating part 36 having an elevating structure therein. The inner accommodating part 36 may be raised and lowered according to the operation of the driving assembly, and may be moved up and down along the lifting guides 311 recessed inwardly on both sides of the outer accommodating part 31 . In addition, a guide groove 311a extending vertically may be formed in the elevating guide 311 . In addition, a guide cover 315 may be provided on the opened upper surface of the lifting guide 311 , and the upper end of the lifting shaft may be rotatably mounted to the guide cover 315 .

The inner accommodating part 36 may be accommodated inside the external accommodating part 31 and may be formed in a box shape corresponding to the external accommodating part 31 . That is, the inner accommodating part 36 may be formed in a box shape with an open upper surface, and an outer surface of the inner accommodating part 36 may be formed so as to be in contact with an inner surface of the external accommodating part 31 . .

In addition, an accommodating part recessed part 361 recessed inward of the internal accommodating part 36 may be formed on the outer surface of the inner accommodating part 36 . The accommodating part recessed part 361 may be formed in a shape corresponding to the elevating guide, so that the internal accommodating part 36 does not flow and is stably raised and lowered when the internal accommodating part 36 is lifted up and down. can

In addition, a receiving unit frame 34 may be provided on a lower surface of the inner receiving unit 36 , and a frame coupling unit 341 protruding laterally may be formed on an outer surface of the receiving unit frame 34 . . The frame coupling part 341 may be coupled to the lifting member 521 that ascends and descends along the lifting shaft 52 , and thus, the upper and lower elevations of the internal accommodation part 36 are possible.

The drive assembly may include a pull-out unit 40 for drawing in and out of the external accommodating part 31 and a lifting unit 50 for elevating the inner accommodating part 36 .

The pull-out unit 40 may include a rack member 133 disposed on both sides of the inner wall of the cabinet, and a pull-out motor 48 and a pinion 49 provided in the external accommodating part 31 . The rack member 133 may extend in the pull-out direction of the external accommodating part 31 and may be formed to have a length that can secure a pull-out distance. In addition, the rack member 133 may be gear-coupled to the pinion 49 .

The rack member 133 may be provided on both left and right sides, respectively, and the pull-out motor 48 and the pinion 49 are also provided on both left and right sides, respectively, so that the pinion 49 when the pull-out motor 48 is driven It may be configured to move along the rack member (133). Of course, if necessary, the rack member 133 is formed on both sides of the external receiving part 31, and the pull-out motor 48 and the pinion 49 may be provided on the wall surface of the storage space.

The elevating unit 50 includes a connecting shaft 53 connecting the elevating shaft 52 provided on both sides of the external accommodating part 31 and the elevating shaft 52 inside the external accommodating part 31, and A lifting motor 54 for driving the connection shaft 53 may be included.

The elevating shaft 52 may be accommodated inside the elevating guide 311 , and upper and lower ends of the elevating guide 311 may be rotatably mounted inside the elevating guide 311 . A screw-shaped gear may be continuously formed on the outer surface of the lifting shaft 52 in the vertical direction. In addition, the elevating member 521 may pass through the elevating shaft 52 by the elevating shaft 52 . In this case, the lifting member 521 may be configured to move in the vertical direction when the lifting shaft 52 rotates forward and backward. In addition, a lifting gear 521 may be provided at a lower end of the lifting shaft 52 . The lifting gear 521 may have a structure capable of transmitting rotational power to the connection shaft 53 .

The connection shaft 53 may be provided on the inner bottom surface of the external accommodation unit 31 , and may extend in the left and right directions to penetrate the lifting guide 311 and extend to the inside of the lifting guide 311 . .

In addition, connecting gears 532 may be provided at both ends of the connecting shaft 53 , and the connecting gear 532 may be gear-coupled with the lifting gear 521 of the lifting shaft 52 . The connecting shaft 53 and the elevating shaft 52 have a structure that crosses each other, and thus the elevating gear 521 and the connecting gear may be configured as bevel gears. Of course, the lifting gear 521 and the connecting gear 532 may have other structures capable of transmitting power.

Meanwhile, a third motor gear 531 may be provided on the connection shaft 53 . The third motor gear 531 has a structure connected to the fourth motor gear 541 connected to the rotation shaft of the elevating motor 54 mounted inside the external receiving part 31 . Accordingly, when the elevating motor 54 is driven, the third motor gear 531 and the fourth motor gear 541 are engaged and rotate, thereby rotating the connection shaft 53 . The lifting shaft 52 is also rotated by the rotation of the connecting shaft 53 , and the inner accommodation part 36 can be raised and lowered by the lifting of the lifting member 521 .

Meanwhile, the operation of the pull-out motor 48 and the lift motor 54 may be controlled by a controller (not shown). The control unit sequentially controls the operations of the pull-out motor 48 and the elevating motor 54 .

In detail, when the user inputs the pulling-out and lifting operations of the drawer device 30 , the pull-out motor 48 starts to be driven first. The external accommodating part 31 may be withdrawn forward by the forward rotation of the pull-out motor 48, and the pull-out motor 48 stops when the external accommodating part 31 is withdrawn to the maximum. .

In addition, at the same time as the withdrawal motor 48 is stopped, the lifting motor 54 rotates forward to operate the lifting unit 50 , and the internal storage unit 36 moves upward. When the inner accommodating part 36 reaches the highest height, the elevating motor 54 stops driving.

In this state, the user can store the food in the internal storage unit 36 , and when the storage is completed, the user inputs the lowering and retracting operation of the drawer device 30 again. When the user inputs a manipulation, the lifting motor 54 starts to drive, and at this time, the lifting motor 54 rotates in reverse. The lifting unit 50 is operated to be lowered by the reverse rotation of the lifting motor 54 , and the inner accommodation part 36 is moved downward. When the inner accommodating part 36 reaches the lowest height, the elevating motor 54 stops driving.

Simultaneously with the stop of the elevating motor 54, the pull-out motor 48 reverses rotation, and by the reverse rotation of the pull-out motor 48, the external accommodating part 31 can be drawn back into the storage space. have. When the external accommodating part 31 is fully retracted, the pull-out motor 48 is stopped and the lowering and retracting operations of the accommodating device are completed.

13 is a front view of a refrigerator according to a third embodiment of the present invention. And, FIG. 14 is a view in which the door of the refrigerator is opened. And, Fig. 15 is a view showing the state of the drawing-in and elevating operation of the storage device according to the third embodiment of the present invention.

As shown in the drawing, the refrigerator 2 according to the third embodiment of the present invention has a cabinet 70 in which an upper storage space 72 and a lower storage space 73 partitioned vertically by a barrier 71 are formed. ) and an upper door 74 and a lower door 75 for opening and closing the upper storage space 72 and the lower storage space 73, respectively.

A pair of the upper doors 74 may be provided, and the pair of upper doors 74 may be independently rotatably mounted to the cabinet 70 . Accordingly, the upper storage space 72 can be partially opened and closed by each of the upper doors 74 .

The lower storage space 73 may be partitioned on left and right sides by a vertical wall 731 . A pair of the lower doors 75 may be provided, and the pair of lower doors 75 may be independently rotatably mounted to the cabinet 70 . Accordingly, the lower door 75 can individually open and close the partitioned left and right spaces of the lower storage space 73 .

Meanwhile, a display 741 for displaying the operating state of the refrigerator 2 and a manipulation unit 742 for operating the operation of the refrigerator 2 may be further provided on the front surface of the upper door 74 .

The automatic opening and closing of the lower door 75 will be possible by the operation of the manipulation unit 742 , and the external storage unit 37 disposed in the lower storage space 73 in connection with the automatic opening and closing of the lower door 75 . of the automatic withdrawal and lifting of the internal accommodating part 38 inside the external accommodating part 37 may be performed continuously. Of course, the manipulation unit 742 may operate independently of at least one of opening and closing the lower door 75 , withdrawing the external accommodating unit 37 , and lifting and lowering the internal accommodating unit 38 . have.

Meanwhile, the external accommodating part 37 may be provided inside the lower storage space 73 . The external accommodating part 37 may be configured to be withdrawable in a drawer manner. A driving assembly may be provided at the rear of the external accommodating part 37 for drawing in and out of the external accommodating part 37 and elevating the inner accommodating part 38 provided inside the external accommodating part 37 . . The configuration of the driving assembly may be any one of the above-described embodiments.

For example, the driving assembly may include the withdrawal/input unit 40 and the elevating unit 50 . The pull-out unit 40 includes rack members 133 provided on both side walls of the refrigerator, and the motor (41 in FIG. 6 ), the motor gear 43 and the drive shaft 44 mounted on the motor 41 . ) coupled to the drive gear 45 , the clutch 47 , the pinion 42 , etc. may be configured in the same manner as in the first embodiment described above. However, the configuration of the withdrawal/intake unit 40 is different in that it is provided on the upper portion of the external receiving unit 37 .

In addition, the lifting unit 50 includes a lifting shaft 52 equipped with the same lifting gear 521 and lifting member 522 as in the first embodiment, and the connecting shaft having connecting gears 511 at both ends. It may include a trough 51 . In addition, the lifting unit 50 may further include a transmission shaft 55 . The transmission shaft 55 may transmit the rotational force of the upper clutch 47 to the lower connection shaft 51 . To this end, a transmission gear 551 may be provided at the upper end of the transmission shaft 55 , and may have a structure connected to the clutch 47 and the connection gear 511 , respectively.

Through such a structure, when the user pulls out and lifts the drawer device, the external accommodating part 37 is withdrawn forward, and after the external accommodating part 37 is completely withdrawn, the internal accommodating part 38 is continuously opened. can be raised

In addition, when the user lowers and pulls in the drawer device, the inner accommodating part 38 descends in a state in which the external accommodating part 37 is withdrawn, and after the inner accommodating part 38 is completely lowered, the external accommodating part 38 is completely lowered. Payment 37 may be drawn back.

Claims (19)

a cabinet in which a storage space is formed;
an external accommodating part forming a space with an open upper surface;
a rail connecting both sides of the external accommodating part and the cabinet and allowing the external accommodating part to be drawn in and out;
an inner accommodating part forming at least a portion of the accommodating space inside the external accommodating part and being raised and lowered;
a rack member provided in the storage space and extending in a withdrawal/intake direction of the external storage unit;
a pull-out unit provided in the external accommodating part to be withdrawn together with the external accommodating part, and to withdraw and insert the external accommodating part in a front-rear direction;
and a lifting unit provided in the external accommodating part to elevate the internal accommodating part,
The withdrawal unit is
a motor provided in the external accommodating part and providing power for drawing in and out of the external accommodating part and elevating the internal accommodating part;
a pinion moved along the rack member; and
a clutch rotated by the motor and selectively connected to any one of the pinion and the elevating unit to transmit power; and
The clutch is moved to be connected to the pinion for withdrawing and entering the external accommodating part, and is moved to be connected to the elevating unit when the external accommodating part is withdrawn.
The method of claim 1,
The withdrawal unit is
a motor gear rotated by the shaft of the motor;
a drive shaft extending parallel to the shaft of the motor; and
It is provided on the drive shaft, the drive gear is selectively connected to the motor gear to transmit power to the drive shaft; further comprising,
The clutch is disposed slidably along the drive shaft to selectively transmit the rotational force of the motor to the pinion or the lifting unit,
A gear part is formed in the clutch, and the gear part is selectively connected to a connection gear provided at an end of a connection shaft for transmitting power to the elevating unit according to movement of the clutch.
3. The method of claim 2,
The motor gear comprises a first motor gear and a second motor gear spaced apart on the shaft of the motor,
The drive gear is spaced apart on the drive shaft and includes a first drive gear rotated together with the pinion and a second drive gear rotated together with the clutch,
The first motor gear is coupled to the first driving gear according to the movement of the clutch, and the second motor gear is coupled to the second driving gear.
4. The method of claim 3,
The drive shaft is
a first driving unit having a polygonal cross-sectional shape and mounted with the first driving gear to rotate the driving shaft together by the driving force of the motor;
A refrigerator having a circular cross-sectional shape and comprising a second driving unit that enables the second driving gear and the clutch to rotate independently of the driving shaft.
3. The method of claim 2,
A magnet is provided on one side of the rack member corresponding to the position of the clutch in a state in which the external receiving part is completely drawn out,
A refrigerator formed of a metal material on one side of the clutch, and provided with a stopper for moving the clutch by the magnetic force of the magnet.
6. The method of claim 5,
The stopper is provided with an elastic member for elastically supporting the motor gear and the driving gear to return to their original coupling positions.
6. The method of claim 5,
The clutch is
a first clutch in which the gear unit coupled to the connection gear is formed;
a second clutch coupled to the stopper and selectively connected to the first clutch;
The first clutch and the second clutch are provided with cam portions corresponding to each other, and the cam portions are slid apart from each other when the lowering of the inner housing portion is completed to separate the first clutch and the second clutch.
3. The method of claim 2,
The lifting unit is
a lifting shaft extending in the vertical direction and having a screw thread formed on an outer surface thereof;
an elevating member penetrating by the elevating shaft and elevating by the rotation of the elevating shaft, the elevating member being connected to the inner accommodating part;
a lifting gear provided at a lower end of the lifting shaft;
a connecting shaft extending in a direction crossing the lifting shaft and transmitting a rotational force of the withdrawing/introducing unit to the lifting shaft;
The refrigerator includes connecting gears provided at both ends of the connecting shaft, respectively, respectively connected to the clutch and the lifting gear.
9. The method of claim 8,
Elevating guides recessed in an inward direction are provided on both side surfaces of the external receiving unit, and the elevating shaft is accommodated in an inner space of the elevating guide.
10. The method of claim 9,
A refrigerator in which elevating guide grooves recessed in a shape corresponding to the elevating guide are formed on both sides of the inner storage unit.
11. The method of claim 10,
A receiving unit frame supporting the inner receiving unit is formed on a lower surface of the inner receiving unit,
A refrigerator in which frame coupling portions protruding outwardly and coupled to the elevating member are further formed on both sides of the housing frame.
9. The method of claim 8,
The connection shaft passes through a rear surface of the external accommodation unit and is disposed to connect the clutch and the lifting gear.
The method of claim 1,
A refrigerator provided with rails extending in multiple stages to support the external storage unit so that the external storage unit can be drawn in and pulled out on both sides of the external storage unit.
delete delete delete delete The method of claim 1,
and a door in the cabinet that opens and closes the storage space, and is coupled to the external storage unit to be drawn in and out together.
19. The method of claim 18,
A door that opens and closes the storage space by rotation and shields the external storage unit is mounted on the opened front side of the cabinet,
The door is a refrigerator that is opened and closed independently of the drawer in and out of the external storage unit.

Images