KR20200134772A - Refrigerator - Google Patents

Abstract

An embodiment of the present invention relates to a refrigerator comprising: a cabinet having a storage space formed therein; a door including a door part for opening or closing a storage space and a drawer part for providing a reception space; a rail for inserting or drawing the door, the rail connecting the door to the cabinet; a driving device provided on the door part to provide power; and a lifting device provided on the drawer part and connected to the driving device to move a part of the drawer part up and down, wherein the driving device comprises: a motor assembly; a screw unit connected to the motor assembly and moving up and down; and a lever connecting the screw unit to the lifting device to move the lifting device up and down, and the motor assembly comprises: a motor; a motor PCB connected to the motor; a motor case in which the motor PCB is disposed; and a motor cover coupled to the motor case to receive the motor and the motor PCB therein. The present invention has an advantage of preventing a user from being injured and remarkably improving convenience in use.

Description

Refrigerator {Refrigerator}

The present invention relates to a refrigerator.

In general, refrigerators are home appliances that allow low-temperature storage of food in an internal storage space that is shielded by a door. To this end, the refrigerator is configured to store the stored food in an optimal state by cooling the interior of the storage space using cold air generated through heat exchange with the refrigerant circulating through the refrigeration cycle.

Recent refrigerators are gradually becoming larger and multifunctional in accordance with changes in dietary life and the trend of high-end products, and refrigerators with various structures and convenience devices that enable users' convenience and efficient use of internal space are being released. .

The storage space of the refrigerator can be opened and closed by a door. In addition, it may be classified into various types of refrigerators according to the arrangement of the storage space and the structure of the door opening and closing the storage space.

Refrigerator doors can be classified into a rotating door in which the storage space is opened and closed by rotation, and a drawer door in which the storage space is opened and closed.

In addition, the drawer door is often disposed in the lower area of the refrigerator. When the drawer door is disposed in the lower area of the refrigerator, the waist must be bowed to take out the basket or food accommodated in the drawer door, and the basket or If the weight of the food is heavy, you may feel inconvenient to use the basket or cause injury.

In order to solve this problem, various structures in which a drawer-type door can be elevated have been developed.

Representatively, U.S. Patent No. 9,377,238 discloses a refrigerator provided with a lifting mechanism for lifting a bin provided in a refrigerator compartment.

However, in such a prior art, a lifting mechanism for lifting and lowering has a structure in which the lifting mechanism is disposed on the outside of the bin and is exposed, and this may cause serious safety problems. In addition, there is a problem of poor appearance due to the structure of the lifting mechanism exposed to the outside.

In addition, since the driving unit has a structure in which the driving unit is exposed to the outside, noise during operation of the driving unit may be transmitted to the outside as it is, which may result in user complaints.

In addition, since the lifting mechanism is disposed inside the warehouse, the storage capacity in the warehouse may be remarkably reduced, which may cause a problem in that the storage efficiency is greatly reduced due to the loss of the storage capacity of the refrigerator as a whole.

In addition, since the lifting mechanism is provided inside the cabinet, it is necessary to separate the door and the lifting mechanism in order to service the lifting mechanism, so there is a problem of poor serviceability.

An embodiment of the present invention is to provide a refrigerator in which an electrical device for lifting is provided inside a door part, and a mechanical device for lifting is provided in a drawer part, respectively.

An object of the present invention is to provide a refrigerator with improved door assembly and productivity.

An object of the present invention is to provide a refrigerator in which serviceability is improved by separating a door part and a drawer part.

An object of the present invention is to provide a refrigerator that prevents moisture from penetrating into a driving device.

An object of the present invention is to provide a refrigerator in which wires connected to a driving device are easily arranged.

A refrigerator according to an embodiment of the present invention includes a cabinet in which a storage space is formed; A door including a door unit for opening and closing the storage space and a drawer unit for providing a storage space; A rail connecting the door and the cabinet and for withdrawing the door; A driving device provided on the door to provide power; A lifting device provided in the drawer part and connected to the drive device to move a part of the drawer part up and down, wherein the drive device includes: a motor assembly; A screw unit connected to the motor assembly and elevating; A lever connecting the screw unit and the lifting device to raise and lower the lifting device, wherein the motor assembly includes: a motor; A motor PCB connected to the motor; A motor case in which the motor PCB is disposed; It may include a motor cover coupled to the motor case to accommodate the motor and the motor PCB therein.

The motor PCB is formed in a plate shape and may be penetrated by a rotation shaft of the motor.

A connector to which an electric wire is connected may be provided in the motor PCB, and a connector hole for exposing the connector to the outside may be formed in the motor case.

The connector hole may be located at an upper end of the motor assembly.

A barrier may be formed in the motor case to extend to contact the motor PCB and to form an accommodation space in which the connector is located.

The barrier may be formed to surround the connector on the outside of the connector.

The accommodation space formed by the barrier may communicate with the connector hole.

A mold for waterproof treatment may be filled in the space formed by the barrier.

An edge forming the circumferential surface of the motor case may have a mounting portion edge extending to shield the accommodation space from above.

The motor cover may have a PCB supporter that protrudes toward the motor PCB at a position corresponding to the connector and supports the motor PCB in close contact with the barrier.

A pair of the PCB supporters are provided on both left and right sides, and may be extended so as to be in contact with the inner surface of the barrier inside the receiving space.

A stepped portion may be formed at an extended end of the PCB supporter so that an upper edge of the PCB is seated.

A door connector connected by an electric wire to the PCB connector is formed at a lower end of the door part, and the door connector may be connected to an electric wire extending from the cabinet.

A wire guide may be formed on the motor cover to guide an electric wire connecting the PCB connector and the door connector.

The wire guide includes a first wire guide extending in a spaced state along a circumference of a motor receiving portion in which the motor is accommodated, and a hook-shaped second wire arranged at regular intervals from below the motor receiving portion toward the door connector. May include a guide.

A refrigerator according to an embodiment of the present invention includes a cabinet in which a storage space is formed; A drawer door through which the storage space is slid and drawn in and out; A driving device provided on a rear surface of the drawer door; And a lifting device provided in the drawer for lifting and lowering, wherein the drive device includes: a motor assembly; A pair of screw units connected to the motor assembly at both sides of the motor assembly to operate at the same time, and including a rotating screw and a screw holder vertically moved along the screw; A lever coupled to the screw holder and rotated according to the movement of the screw holder, and a lever connected to the lifting device to lift the lifting device, wherein the motor assembly includes: a motor; A motor PCB connected to the motor and having a PCB connector to which an electric wire is connected; And a motor case in which the motor and the motor PCB are accommodated, and a connector mounting part may be formed in the motor case to expose the PCB connector.

The connector mounting portion may include a connector hole that is opened at an upper end of the case to expose the PCB connector; And a barrier extending from the motor case to the motor PCB to form an accommodation space for the PCB connector, and a mold may be filled in the accommodation space.

The pair of screw units may be arranged to be closer to each other from an upper side to a lower side, and a lower end of the screw unit and the motor assembly may be connected to each other at a lower portion of the door.

The motor assembly further includes a gear assembly comprising a plurality of gear combinations connecting an upper motor and a lower screw unit, and the plurality of gears may be continuously arranged in a vertical direction.

Housings for accommodating the screw and the screw holder may be further formed on both sides of the motor case.

In the refrigerator according to the proposed embodiment, the following effects can be expected.

A refrigerator according to an embodiment of the present invention is configured to allow a part of the storage space inside the drawer door to be lifted or lowered while the drawer door is pulled out. Accordingly, the user does not have to bend the waist excessively when the food inside the drawer door disposed below is stored, so that the convenience of use can be improved.

In particular, in order to lift a heavy food or a container containing food, the user has to apply a lot of force to lift the food or container, but the lifting device inside the drawer door is raised to a position convenient for use by driving the drive device. There is an advantage of preventing user injuries and significantly improving convenience in use.

In addition, a driving device is provided in the door part, a lifting device is disposed in the drawer part, and the door part and the drawer part have a structure that can be easily separated. The driving device and the lifting device may be separated together when the door part and the drawer part are separated, and thus serviceability and maintenance performance of the door may be improved.

Further, the driving device disposed on the door has a structure that is mounted on the rear surface of the door, and an effect of easy assembly and improved productivity can be expected through a simple mounting structure. In particular, there is an advantage in that the motor assembly has a structure in which the PCB connector is exposed, and it is very easy to connect the connector for wire connection. In addition, the door is further provided with a door connector, and the connection of wires guided from the drawer portion is facilitated, thereby improving assembly, productivity, and serviceability.

In addition, a wire guide may be formed on the motor cover to guide wires guided from the connector hole at the top to the door connector at the bottom. Accordingly, the arrangement of the electric wire guided to the door connector is facilitated, and assembling property and productivity can be further improved.

In addition, since it is possible to connect wires by the door connector at the lower end of the door part, there is an advantage that the wires connected to the door part may be covered by the drawer part. In addition, when the door part and the drawer part are separated through the door connector, there is an advantage that the wire connected to the door part can be easily separated and mounted.

In addition, the connector hole through which the PCB connector is exposed is formed on the upper end of the motor case, so that moisture may be prevented from being collected or flowing down. Particularly, a connector mounting part is formed in the motor case, and the mold is filled in the connector mounting part to facilitate connection of the electric wire and fundamentally block moisture penetration from the outside. Accordingly, it is possible to expect an effect of preventing damage to the driving device due to moisture and improving durability.

1 is a front view of a refrigerator according to an embodiment of the present invention.
2 is a cross-sectional view schematically illustrating an elevated state of a lower drawer door of a refrigerator according to an embodiment of the present invention.
3 is a perspective view of the container of the lower drawer door separated.
4 is an exploded perspective view of the lower drawer door as viewed from the front in which the drawer part and the door part are separated.
5 is a rear view of the door part.
6 is a rear view of a state in which the door cover of the door portion is removed.
7 is a perspective view as viewed from the front of the driving device in a state in which the driving device and the lifting device are connected.
8 is a rear perspective view of the driving device.
9 is a front perspective view of the driving device.
10 is an exploded perspective view of the driving device.
11 is an exploded perspective view of a gear assembly of the driving device.
12 is a view showing a power transmission structure of the drive device.
13 is a partial enlarged view showing a structure in which power is transmitted to a screw of the driving device.
14 is a view showing the mounting state of the motor and the motor PCB of the drive device.
15 is a partially enlarged view showing the structure of the connector mounting portion of the driving device.
16 is a longitudinal sectional view showing the internal structure of the connector mounting unit in a state in which the driving device is mounted.
17 is a cross-sectional view showing the internal structure of the connector mounting portion in a state in which the driving device is mounted.
18 is a perspective view of the drawer.
19 is an exploded perspective view of the drawer part.
20 is a perspective view of a lifting device according to an embodiment of the present invention.
21 is a view showing a state in which the upper frame of the lifting device is raised.
22 is a view showing a state in which the lever of the present invention is connected to the lifting device.
23 is a perspective view of the lower drawer door in a closed state.
24 is a perspective view of the lower drawer door completely open.
25 is a cross-sectional view of the drawer door when the container of the lower drawer door is completely lowered.
26 is a perspective view showing the state of the driving device and the lifting device in the state of FIG. 25;
27 is a cross-sectional view of the drawer door when the container of the lower drawer door is completely raised.
28 is a perspective view showing the state of the driving device and the lifting device in the state of FIG. 27;

Hereinafter, some embodiments of the present invention will be described in detail through exemplary drawings. In adding reference numerals to elements of each drawing, it should be noted that the same elements are assigned the same numerals as possible even if they are indicated on different drawings. In addition, in describing an embodiment of the present invention, if it is determined that a detailed description of a related known configuration or function interferes with the understanding of the embodiment of the present invention, the detailed description thereof will be omitted.

In addition, in describing the constituent elements of the embodiment of the present invention, terms such as first, second, A, B, (a), (b) may be used. These terms are only used to distinguish the component from other components, and the nature, order, or order of the component is not limited by the term. When a component is described as being "connected", "coupled" or "connected" to another component, that component may be directly connected or connected to that other component, but another component between each component It should be understood that may be “connected”, “coupled” or “connected”.

1 is a front view of a refrigerator according to an embodiment of the present invention. And, FIG. 2 is a cross-sectional view schematically illustrating an elevated state of a lower drawer door of a refrigerator according to an embodiment of the present invention.

1 and 2, the refrigerator 1 may have an external shape formed by a cabinet 10 forming a storage space and a door 2 shielding the opened front surface of the cabinet 10. have.

The storage space inside the cabinet 10 may be divided into a plurality of spaces. For example, the upper space 11 of the cabinet 10 may be divided into a refrigerating chamber, and the lower space 12 may be divided into a freezing chamber. Of course, the upper space and the lower space may be divided into separate spaces maintained at different temperatures rather than a refrigerating compartment or a freezing compartment, and may be referred to as an upper space and a lower space.

The door 2 may include a rotating door 20 that opens and closes the upper space by rotation, and a drawer door 30 that opens and closes the lower space by drawing in/out. The lower space may be divided up and down again, and the drawer door 30 may include an upper drawer door 30a and a lower drawer door 30b.

In addition, the rotating door 20 and the drawer door 30 are formed of a metal material to form an exterior exposed to the front.

The present invention has been described on the basis of a refrigerator in which the rotating door 20 and the drawer door 30 are disposed together, but the present invention is not limited thereto, and all types of refrigerators provided with a drawer-type door Will be applicable. In addition, the rotary door 20 may be provided at an upper portion and may be referred to as an upper door, and the drawer door 30 may be provided at a lower portion to be referred to as a lower door.

A display 21 may be provided on one front side of the rotating door 20, and the display 21 may include a structure of a liquid crystal display or an 88-segment structure.

In addition, when the exterior of the door 2 is formed of a metal material, the display 21 may be formed such that a plurality of fine holes are perforated to display information by transmitted light.

In addition, an operation unit 22 capable of operating automatic rotation or withdrawal of the upper door 2 or the lower door 2 may be provided on one side of the rotary door 20.

The manipulation unit 22 may be provided integrally with the display 21 and may be operated by a touch method or a button method. The manipulation unit 22 may input/operate a command for the overall operation of the refrigerator 1, and may operate the drawer door 30 to move in/out or to move the drawer door 30 up or down.

An operation unit 301 may also be provided on the drawer door 30. The operation unit 301 may be provided on one side of the lower drawer door 30b positioned at the bottom of the drawer doors 30, and the operation unit 301 may be configured in a touch or button manner. Of course, the manipulation unit 301 may be configured as a sensor that detects the user's proximity or movement, or may be configured to input manipulation by the user's motion or voice.

In addition, as shown in the drawing, a manipulation device 302 is provided at the bottom of the lower drawer door 30b to output a virtual switch by irradiating an image on the bottom surface and input manipulation in a manner that allows the user to approach the area. It could be configured.

Meanwhile, the lower drawer door 30b may be automatically pulled in and out according to the manipulation of the manipulation unit 301. In addition, food or containers provided in the lower drawer door 30b may be raised or lowered in a state in which the lower drawer door 30b is pulled out according to the operation of the operation unit 301.

That is, the lower drawer door 30b may be operated automatically in/out and/or ascending and descending by at least one of a plurality of devices 22, 301, 302, and 303 for manipulation. Of course, only one of the plurality of devices 22, 301, 302, and 303 for manipulation may be provided as needed.

On the other hand, the manipulation devices 22,301,302, 303 may be configured in plural and used for withdrawal and lifting of the drawer door 30, and a combination or sequential manipulation of a plurality of manipulation devices 22,301,302, 303 In/out and lifting may be operated depending on the situation.

In order to store food stored in the lower drawer door 30b, the lower drawer door 30b is pulled forward, and then the container 36 inside the lower drawer door 30b can be operated to lift.

Meanwhile, the container 36 may have a predetermined height. Since the container 36 is seated in the lifting device 80 to be described later, the height of the container 36 may be added to the height of the lifting device 80 when the lifting device 80 is raised. Accordingly, when the lifting device 80 is raised, it may be located at a point where it is very easy for a user to access the container 36 or lift the container 36.

Accordingly, the container 326 can be completely accommodated in the drawer part 32 when the lower drawer door 30b is withdrawn, and is located higher than the lower storage space 12 when the lifting device 80 is raised. It can be formed to be located in.

On the other hand, the shape of the container 36 is not limited, but may be a shape corresponding to the size of the front space (see S1 in FIG. 3), and has a predetermined height even when the lifting device 80 is raised. It would be desirable to be configured so that the food contained therein does not come off.

By such an operation, the food or container 36 inside the drawer door 30 disposed at the lowermost position can be more easily lifted and used.

The lower drawer door 30b is automatically pulled back and forth by a pull-out motor 14 and pinion 141 provided in the cabinet 10 and a pull-out rack 34 provided on the lower surface of the lower drawer door 30. May be worn.

In addition, the container inside the lower drawer door 30b may be raised and lowered by the driving device 40 and the lifting device 80 provided in the lower drawer door 30b.

Hereinafter, configurations for the operation of the lower drawer door 30b and the lower drawer door 30b of the present invention will be described in more detail. Unless otherwise stated, the lower drawer door 30b is Let's call it a door or door.

Meanwhile, the embodiment of the present invention is not limited to the number and shape of drawer doors, and may be applied to all refrigerators provided with a drawer-type door in a lower storage space.

3 is a perspective view of the container of the lower drawer door separated. 4 is an exploded perspective view of the lower drawer door as viewed from the front in which the drawer part and the door part are separated.

1 to 4, the door 30 includes a door part 31 for opening and closing the storage space, and a drawer that is coupled to the rear surface of the door part 31 and is drawn in and out with the door part 31. It may include a part 32.

The door part 31 may be exposed to the outside of the cabinet 10 to form the exterior of the refrigerator 1, and the drawer part 32 is disposed inside the cabinet 10 to form a storage space. can do. In addition, the door portion 31 and the drawer portion 32 may be combined with each other to be withdrawn in and out of the front and rear directions.

The drawer part 32 is always located on the rear surface of the door part 31 and may form a space in which food or containers for storage are accommodated. The inside of the drawer part 32 may form a storage space that is opened upward, and the outside of the drawer part 32 may have an exterior formed by a plurality of plates (391,392,395 in FIG. 19).

The plurality of plates 391, 392, 395 may be made of a metal material such as stainless steel, and are provided outside as well as inside of the drawer part 32 so that the entire drawer part 32 has the same texture as stainless steel or stainless steel. Can be formed.

In a state in which the door 30 is retracted, a machine room 3 in which a compressor and a condenser constituting a refrigeration cycle may be disposed behind the door 30. Accordingly, the rear part of the drawer part 32 may have an upper end protruding more than a lower end, and the rear part of the drawer part 32 may include an inclined surface 321.

In addition, draw-out rails 33 that can guide the draw-out of the door 30 may be provided on both side surfaces of the drawer part 32. The door 30 may be mounted to the cabinet 10 so as to be able to be withdrawn and inserted by the withdrawal rail 33. The lead-in/out rail 33 may be shielded by an outer side plate 391 so as not to be exposed to the outside. The draw-out rail 33 may be configured in a rail structure that can be extended in multiple stages.

A rail bracket 331 is provided on the draw-out rail 33, and the rail bracket 331 may extend from one side of the draw-out rail 33 to both sides of the drawer part 32. In addition, the rail bracket 331 may be fixedly coupled to the interior wall of the cabinet. Accordingly, the drawer unit 32, that is, the door 30 may be mounted to the cabinet 10 so as to be retractable by the draw-out rail 33.

In addition, the draw-out rail 33 may be provided at the bottom of both side surfaces of the drawer part 32. In addition, the lower ends of both sides of the drawer part 32 are mounted in a form that is seated above the draw-out rail 33, and thus, the draw-out rail 33 may be referred to as the under rail. .

A pull-out rack 34 may be provided on the lower surface of the drawer part 32. The draw-out rack 34 may be disposed on both sides, and is connected with the drive of the draw-out motor 14 mounted on the cabinet 10 to enable automatic draw-out of the door 30. That is, when the operation unit 22 and 301 inputs an operation, the withdrawal motor 14 is driven so that the door 30 can be withdrawn according to the movement of the withdrawal rack 34. At this time, the door 30 can be stably pulled in and out by the pull-out rail 33.

Of course, the drawer part 32 may not be provided with a draw-out rack 34, and the user is configured to directly draw in/out the door 30 by holding and pushing or pulling one side of the door part 31. It will be possible.

Meanwhile, the inside of the drawer unit 32 may be divided into a front space S1 and a rear space S2. The front space S1 may include a lifting device 80 that is lifted up and down, and a container 36 that is seated in the lifting device 80 and lifted together with the lifting device 80.

The container 36 is shown in the form of a basket with an open top, but may have a closed box structure such as a kimchi container, and a plurality of containers may be stacked or disposed side by side.

In addition, when the door 30 is withdrawn, the entire drawer unit 32 cannot be pulled out of the storage space due to the restriction of the pulling distance of the door 30, and at least the front space S1 is It is drawn out of the storage space and all or part of the rear space S2 is located inside the storage space inside the cabinet 10.

In such a structure, the withdrawal distance of the door 30 may be limited by the draw-out rack 34 or the draw-out rail 33, and the longer the draw-out distance is applied to the door 30 in the withdrawn state. This is because it is difficult to maintain a stable state due to an increase in the losing moment, and deformation or damage of the draw-out rail 33 or the draw-out rack 34 may be caused.

Inside the front space (S1), a lifting device 80 and a container 36 are accommodated, and the lifting device 80 is lifted up and down, while the food or container 36 seated in the lifting device 80 ) Can be raised and lowered together. In addition, the lifting device 80 may be provided under the container 36, and when the container 36 is mounted, the lifting device 80 may be covered by the container 36, thus Any configuration of the lifting device 80 is not exposed to the outside.

A separate drawer cover 37 may be provided in the rear space S2. The front space S1 and the rear space S2 may be partitioned by the drawer cover 37. When the drawer cover 37 is mounted, the front and upper surfaces of the rear space S2 are shielded so that the unused space is not exposed to the outside.

By attaching the drawer cover 37, the rear space S2 is covered when the door 30 is withdrawn, and only the front space S1 is exposed when the door 30 is pulled out, thereby providing a cleaner appearance. It will be able to provide. In addition, the remaining space except for the space in which the lifting device 80 and the container 36 are mounted is covered to prevent problems such as food dropping or getting objects caught in the gap during lifting.

However, when the drawer cover 37 is separated, it becomes accessible to the rear space S2, and food can be stored in the rear space S2. In order to utilize the rear space S2, a separate pocket or a container corresponding to the shape of the rear space may be disposed in the rear space S2.

And, in order to utilize the entire space inside the drawer part 32, the lifting device 80 inside the drawer part 32 can be simply detachably mounted, and the lifting device 80 and the drawer cover 37 By separating the drawer unit 32, the entire inner space may be utilized.

External appearances of the inner and outer surfaces of the drawer 32 may be formed by plates (see 391, 392, and 395 in FIG. 19), and the external and internal appearances of the drawer 32 are shielded by shielding the components mounted on the drawer 32. You can make it look neat. The plates (see 391, 392, and 395 in FIG. 19) may be formed in a plurality, and may be formed of a stainless material to provide a more luxurious and clean appearance.

Meanwhile, the door part 31 and the drawer part 32 constituting the door 30 may have a structure that can be separated and coupled to each other. Assembly workability and serviceability may be improved through the detachable structure of the door part 31 and the drawer part 32.

The rear surface of the door part 31 and the front surface of the drawer part 32 may be coupled to each other, and when the door part 31 and the drawer part 32 are combined, the power for lifting the lifting device 80 It can be configured to provide.

A driving device (refer to 40 in FIG. 6) for lifting the lifting device 80 may be disposed in the door part 31, and the door part 31 and the drawer part 32 may be selectively connected. .

In particular, the driving device (refer to 40 in FIG. 6) provided in the door 31 may be configured with components operated by an input of power and components for transmitting power to the lifting device 80. Therefore, when the service of the driving device (refer to 40 in FIG. 6) is required, the door part 31 can be separated to take action, and only the door part 31 can be replaced to take a simple action.

The door part 31 and the drawer part 32 may be coupled by a pair of door frames 316 provided on both sides.

The door frame 316 includes a door coupling portion 316a extending in the vertical direction and coupled to the door portion 31, and a drawer coupling portion 316b extending rearward from the lower end of the door coupling portion 316a. It may include.

The door coupling portion 316a may be coupled to the door portion 31 by a separate coupling member, or may be coupled to one side of the door portion 31 by a simple coupling structure. Further, the drawer coupling part 316b may be disposed to be inserted into both sides of the drawer part 32 so as to be adjacent to the draw-out rail 33. In addition, the drawer coupling portion 316b may be mounted on the drawer portion 32 in a state coupled to the draw-out rail 33. Can be inserted and placed.

In a state in which the door coupling part 316a is coupled to the door part 31, the drawer coupling part 316b may be inserted into the drawer part 32 to support the drawer part 32. In addition, the drawer coupling portion 316b may be coupled to the drawer portion 32 by a separate coupling member, or may be coupled to each other by a structure that fits each other.

In addition, when the door part 31 and the drawer part 32 are combined, a part of the lifting device 80 is provided on the front of the drawer part 32 so that the driving device 40 and the lifting device 80 can be connected. A drawer opening 35 through which is exposed may be formed.

On the other hand, the door part 31 is formed to substantially open and close the storage space of the cabinet 10 and at the same time form a front exterior of the refrigerator 1.

The door part 31 includes an outer case 311 forming a part of the front and circumferential surfaces, a door liner 314 forming a rear surface, an upper decor 312 and a lower decor 313 forming the upper and lower surfaces. The appearance can be formed by this. In addition, an insulating material (not shown) may be filled inside the door portion 31 between the outer case 311 and the door liner 314.

Hereinafter, the door part 31 constituting the door 30 and the driving device 40 provided in the door part 31 will be described in more detail with reference to the drawings.

5 is a rear view of the door part. And, Figure 6 is a rear view of a state in which the door cover of the door portion is removed. 7 is a perspective view of the driving device and the lifting device as viewed from the front of the driving device.

As shown in the drawing, the front surface of the door part 31 may be formed by the out plate 311, and the rear surface may be formed by the door liner 314.

In addition, a driving device 40 for operating the lifting device 80 may be provided inside the door part 31. The driving device 40 is disposed inside the door part 31, but is not buried in the heat insulating material, but is provided inside the space formed by the door liner 314, and the door cover 315 It may be configured so as not to be exposed to the outside by being shielded by.

In detail, an insulating material may be filled between the out plate 311 and the door liner 314, and insulate the inside of the storage space 12.

Further, the door liner 314 may be formed with a door recessed portion that is recessed inward. The door recessed portion may be formed in a shape corresponding to the shape of the driving device 40 and may be recessed into the inside of the door 30. In addition, the door recessed portion may be recessed so that electrical components including the door light 318 for illuminating the interior of the container are further mounted.

The door light 318 is formed long in a horizontal direction from left to right of the rear surface of the door 30, and may be located at the top of the inner region of the gasket 317 formed along the rear circumference of the door 30. have.

The door light 318 is configured such that a plurality of LEDs and light irradiated from the LED are directed toward the inside of the door 30, particularly the drawer part 32, and the door 30 is pulled out and opened. In the state, the inside of the drawer 32 is illuminated.

The door cover 315 is for forming a rear exterior of the door part 31 and shields the driving device 40 mounted on the door part 31. The door cover 315 may be formed in a plate shape, and may be shielded so that the driving device 40 is not exposed in a state in which the driving device 40 is mounted.

The door cover 315 may have a cover recessed portion formed at a corresponding position so as to cover the driving device 40 from the rear. The cover depression may be formed such that a front surface of the door cover 315, that is, a surface facing the driving device 40, is recessed, and a rear surface of the door cover 315, that is, a surface facing the inside of the storage space, may be formed to protrude. .

In addition, the side cutouts 315a may be formed at both left and right side ends of the door cover 315. The side cutout 315a is a portion that allows the supporter 319 for coupling with the door frame 316 to be exposed, and may be formed to be cut inward in a shape corresponding to the supporter 319.

Meanwhile, cover openings 315b may be formed at both sides of the lower end of the door cover 315. The cover opening 315b exposes the receiving portion 421a of the lever 42, which is a component of the driving device 40, and access to the receiving portion 421a through the cover opening 315b is It becomes possible. In addition, the cover opening 315b may be located at a position facing the drawer opening 35.

Therefore, when the door part 31 and the drawer part 32 are coupled, the cover opening 315b and the drawer opening (35 in FIG. 18) can communicate with each other, and thus, the cover opening 315b and The receiving part 421a and the coupling part 842c of the lifting device 80 may be coupled through the drawer opening 35. That is, the driving device 40 and the lifting device 80 may be connected to each other, and the lifting device 80 may be raised or lowered according to the operation of the driving device 40. In addition, it may be possible to separate only the lifting device 80 through the separation of the receiving portion 421a and the coupling portion 842c in a state in which the door portion 31 and the drawer portion 32 are coupled.

Meanwhile, a door connector hole 315c may be formed in the center of the lower end of the door cover 315. The door connector hole 315c may be formed to expose the door connector 315d mounted on the door part 31, and a wire guided from the cabinet 10 through the door connector hole 315c This may be connected to the door connector 315d. Since the wire has a structure that is connected from the cabinet 10 to the bottom of the door 31 through the lower surface of the drawer 32, it is not exposed to the outside when the drawer door 30 is assembled.

The door connector 315d is to facilitate connection and separation of electric wires connected to electric components such as the driving device 40 provided in the door part 31 and the door light 318, and general wire connection It can have a connector structure. Therefore, when the door part 31 and the drawer part 32 are connected and separated, the wires directed to the door part 31 can also be easily connected and separated through the door connector 315d.

In addition, at least some of the wires of the door connector 315d may be connected to the PCB connector 642 to be described below, and power and control signals for the operation of the motor assembly 60 may be transmitted.

A door gasket 317 may be provided along the rear circumference of the door part 31, and when the door 30 is closed, the door gasket 317 may be sealed in contact with the front of the cabinet 10. have.

Meanwhile, the driving device 40 may be shielded by the door cover 315 and disposed inside the door part 31. The power of the driving device 40 may be transmitted to the lifting device 80. At this time, the driving device 40 simultaneously transmits power to both the left and right sides of the lifting device 80 so that the lifting device 80 is not inclined or biased to one side under any circumstances, and the left and right sides are horizontally elevated and lowered. You can do it.

In addition, the driving device 40 and the lifting device 80 may be configured to be separable from each other. That is, the driving device disposed on the door part 31 and the lifting device 80 disposed on the drawer part 32 may be separated and coupled together when the door part 31 and the drawer part 32 are separated or combined. It has a structure that can be Of course, the lifting device 80 may be separated while the door portion 31 and the drawer portion 32 are coupled to each other.

Hereinafter, the configuration of the driving device 40 will be described in detail with reference to the drawings.

8 is a rear perspective view of the driving device. And, Figure 9 is a front perspective view of the drive device. And, Figure 10 is an exploded perspective view of the driving device. And, Figure 11 is an exploded perspective view of the gear assembly of the drive device. And, Figure 12 is a view showing the power transmission structure of the drive device. And, Figure 13 is a partial enlarged view showing a structure in which power is transmitted to the screw of the driving device.

The driving device 40 includes a motor assembly 60, a pair of screw units 50, 50a disposed on both sides of the motor assembly 60, and connected to each of the screw units 50, 50a. It may include a pair of levers 42.

In detail, the motor assembly 60 may be located in the center portion in the left-right direction of the door portion 31. Further, it may be configured to enable the operation of the screw units 50 and 50a and the lever 42 on both sides by driving the motor assembly 60 including one driving motor 64.

Particularly, the motor assembly 60 may adjust the amount of deceleration and transmitted force through a combination of a plurality of gears.

In addition, the motor assembly 60 has a structure in which the drive motor 64 and gears are arranged vertically in order to minimize a space that is depressed when mounted on the door part 31, and in particular, the motor assembly 60 It may be formed to widen the width in the left and right directions to minimize the thickness of the material and minimize the thickness in the front and rear directions.

In addition, the drive motor 64 constituting the motor assembly 60 may protrude toward the drawer part 32 to minimize a depression depth of the door part 31 to ensure thermal insulation performance.

The drive motor 64 provides power for the lifting of the lifting device 80 and may be configured to rotate forward and backward. Accordingly, when the lifting signal of the lifting device 80 is input, it is rotated forward and backward, thereby providing power for lifting the lifting device 80. In addition, the drive motor 64 may be stopped when a load of the driving motor 64 or a stop signal is input by detection of a sensor.

The motor assembly 60 includes a motor case 61 in which the driving motor 64 is installed, and a motor cover 62 coupled to the motor case 61 and covering the driving motor 64. I can.

A motor accommodating portion 621 is recessed in the inner surface of the motor cover 62 so that the driving motor 64 may be accommodated therein. The motor accommodating part 621 may be formed in a protruding shape when viewed from the outside, and the wire 643 connected to the PCB connector 642 to be described below is guided on the outer surface of the motor cover 62 Guides 622 and 623 may be formed.

The electric wire guides 622 and 623 include a first electric wire guide 622 disposed along the motor receiving portion 621 and a second electric wire guide 623 continuously disposed downwardly from the lower portion of the motor receiving portion 621. Can include.

The first wire guide 622 is formed in a rib shape having a predetermined height, and is formed in a shape corresponding to the shape of the motor receiving unit 621 at a position spaced apart from the circumference of the side of the motor receiving unit 621 Can be. Accordingly, the electric wire 643 guided through the connector mounting portion 613 on the upper end of the motor case 61 may be guided downward along the space between the motor receiving portion 621 and the first electric wire guide 622. .

The second wire guide 623 may be formed in a shape of a hook and a ring, and may be formed in the center of the left and right sides of the motor cover 62. Further, a plurality of them may be spaced apart from the motor receiving portion 621 at a predetermined interval. Accordingly, the electric wire 643 may be guided to the door connector 315d located at the center of the lower end of the door part 31.

The rotation axis of the drive motor 64 may protrude from the motor case 61 toward the opposite side of the motor cover 62. In addition, the motor assembly 60 may further include a power transmission unit for transmitting the power of the driving motor 64. The power transmission unit may be located on the opposite side of the driving motor 64 with respect to the motor case 61.

In addition, the power transmission unit may be formed of a combination of a plurality of gears, and may be shielded by a cover member 66 mounted on the opposite side of the drive motor 64.

The power transmission unit may include a driving gear 651 connected to the shaft of the driving motor 64 passing through the motor case 61. The power transmission unit may further include a first transmission gear 652 meshed with the driving gear 651 from a lower side of the driving gear 651.

The first transmission gear 652 may be, for example, a multi-stage gear. As an example, the first transmission gear 652 includes a first gear 652a meshed with the driving gear 651 and a second gear 652b having a diameter smaller than that of the first gear 652a. Can include. Each of the first gear 652a and the second gear 652b may be a spur gear.

The power transmission unit may further include a second transmission gear 653 meshing with the first transmission gear 652. The second transmission gear 653 may mesh with the first transmission gear 652 from a lower side of the first transmission gear 652. The second transmission gear 653 includes a first gear 653a meshing with the second gear 652a of the first transmission gear 652, and a first gear having a larger diameter than the first gear 653a. It may include 2 gears 653b.

Each of the first gear 653a and the second gear 653b of the second transmission gear 653 may be a spur gear. In addition, the second gear 653b of the second transmission gear 653 may be located below the first gear 652a of the first transmission gear 652. Accordingly, an increase in the front and rear width of the driving device 60 can be prevented by the first transmission gear 652 and the second transmission gear 653.

The power transmission unit may further include a third transmission gear 654 meshed with the second transmission gear 653. The third transmission gear 654 may mesh with the second gear 653b under the second gear 653b of the second transmission gear 653. The third transmission gear 654 may be a spur gear. A portion of the third transmission gear 654 may be disposed to overlap the second transmission gear 653 in the front-rear direction.

A gear shaft for rotatably supporting the plurality of transmission gears may be provided in the motor case 61.

The power transmission unit may include a pair of cross gears 655 and 656 meshed with the third transmission gear 654. The pair of crossover gears 655 and 656 are arranged to be spaced apart from each other in the left and right direction, and the rotation center is lower than the rotation center of the third transmission gear 654 to be meshed with the third transmission gear 654. have.

Each of the crossed gears (655, 656) is a spur gear (655a, 656a) and a helical gear form so that the cross gears (655, 656) can mesh with the third transmission gear (654). It may include first helical gear units 655b and 656b.

In addition, the rotation center lines of the cross gears 655 and 656 spaced apart from each other may extend horizontally to each other.

The power transmission unit may further include a pair of second helical gear units 657 and 657a meshing with each of the cross gears 655 and 656.

The second helical gear parts 657 and 657a may mesh with the first helical gear parts 655b and 656b. The rotation center lines of the second helical gear units 657 and 657a may be disposed to cross the rotation center lines of the cross gears 655 and 656. Accordingly, the first helical gear units 655b and 656b and the second helical gear units 657 and 657a are intersected with each other, and may be configured to be engaged with each other to transmit rotation.

The rotation center lines of the cross gears 655 and 656 may extend in the front-rear direction, and the rotation center lines of the second helical gear units 657 and 657a may extend in the vertical direction. Further, the rotation center lines of the second helical gear units 657 and 657a disposed on both left and right sides may be inclined in a direction that is further away from each other toward the upper side.

As described above, the use of a pair of crossed helical gears has the advantage that the power transmission direction can be easily switched and the structure for power transmission becomes compact. In particular, even when a large force is transmitted for the lifting of the lifting device 80, a large noise is not generated.

The pair of screw units 50 and 50a may be disposed on both left and right sides of the motor assembly 60.

The pair of screw units (50, 50a) are disposed on both left and right sides of the inside of the door part (31), and the pair of screw units (50, 50a) differ only in their mounting positions, and their structure and shape Are the same.

Power of the driving motor 64 may be transmitted from the lower side of the screw units 50 and 50a.

The screw units 50 and 50a on both sides may be formed to be symmetrical with respect to the motor assembly 60. Accordingly, the motor assembly 60 may be disposed between the screw units 50 and 50a positioned on both sides, and the screw units 50 and 50a disposed on both sides are the distance between the top and bottom. Can be arranged to get closer and closer.

The screw units 50 and 50a may include screws 52 and 52a that are rotated by receiving power from the driving motor 64. The screws 52 and 52a may be inclined to extend in a vertical direction, with an upper end facing the outside and a lower end facing the outside.

The screws 52 and 52a may be connected to the second helical gear units 657 and 657a. That is, the screws 52 and 52a may be rotated together when the second helical gear units 657 and 657a are rotated.

For example, an insertion portion may be formed in the second helical gear portions 657 and 657a, and an accommodation groove in which the insertion portion is accommodated may be formed in the screw 52.

Accordingly, the screws 52 and 52a are also disposed to be symmetrical on both left and right sides with respect to the motor assembly 60, and may be disposed obliquely on the same center line as the center line of the second helical gear units 657 and 657a. . Accordingly, the screws 52 and 52a on both sides of the left and right sides have an arrangement that is farther away from each other as it goes upward.

The screw units 50 and 50a may further include screw holders 56 and 56a through which the screws 52 and 52a are coupled.

The screw holders 56 and 56a may be moved vertically along the screws 52 and 52a when the screws 52 and 52a are rotated. In addition, the lever 42 may be coupled to the screw holders 56 and 56a. When the screw holders 56 and 56a are moved, the lever 42 may be rotated.

In detail, a holder through hole 561 is formed in the center of the screw holders 56 and 56a. The holder through-hole 561 is formed to pass through the screw holders 56 and 56a, and is inserted and mounted so that the screws 52 and 52a pass through the holder through-hole 561. A thread coupled to the screw may be formed on the inner side of the holder through hole 561. Accordingly, when the screws 52 and 52a are rotated, the screw holders 56 and 56a are movable along the screws 52 and 52a.

In addition, guide holes 562 are formed on both left and right sides of the holder penetrating portion 561. The guide hole 562 is a portion through which the guide bars 53 and 54 to be described below pass, and the screw holders 56 and 56a may be moved along the guide bars 53 and 54.

The guide bars 53 and 54 may be formed in a round bar shape, and may be formed of a metal material to stably support the screw holders 56 and 56a.

A bearing is provided on the inner surface of the guide hole 562 to facilitate the movement of the screw holders 56 and 56a. Further, although not shown in detail, a sleeve-shaped lubricating member may be provided in the guide hole 562 through the guide bars 53 and 54. The lubricating member may be formed of engineering plastic or a material that reduces friction, thus making it easier to move the screw holders 56 and 56a and preventing noise from being generated. Of course, if necessary, the screw holders 56 and 56a themselves may be formed of an engineering plastic material.

Since a pair of the guide bars 53 and 54 are configured to pass through the guide hole 562, the screw holders 56 and 56a do not flow left and right, and a stable lift is possible. In particular, stable lifting is possible even in a situation where a heavy load is applied to drive the lifting device 80, and noise is not generated.

In addition, a magnet 563 may be provided in the screw holder 56a. As an example, a magnet mounting groove 563a into which a magnet is pressed may be formed in the screw holder 56a, and the magnet 563 may be inserted into the magnet mounting groove 563a.

The magnet 563 is for detecting the position of the screw holder 56a, and when the screw holder 56a is located at the lowest or upper end of the screws 52, 52a, a lift detection device to be described below. 90 will be able to detect this. That is, whether the magnet 563 mounted on the screw holder 56a is sensed, it is possible to determine the completion of the ascending and descending of the lifting device.

Further, although not shown in detail, the holder connector 564 may be mounted on the opposite side of the rear surface of the screw holder 56a on which the magnet 563 is provided, that is, the front surface of the screw holder.

The holder connector 564 is for connecting the lever 42 and the screw holders 56 and 56a, and may be fixedly mounted to the screw holders 56 and 56a. That is, the holder connector 564 may be coupled to the screw holders 56 and 56a while passing through the lever 42. The lever 42 may include a rectangular slot 426 so that the holder connector 564 does not interfere with the rotation of the lever 42.

Since the screw units 50 and 50a are disposed on both left and right sides, extension lines of the screws 52 and 52a on both left and right sides may cross outside of the driving device 40.

The lever 42 connects the screw holders 56 and 56a and the lifting device 80, and both ends may be coupled to the screw holders 56 and 56a and the lifting device 70, respectively.

The screw units 50 and 50a may further include a housing 51 accommodating the screws 52 and 52a.

The housing 51 forms an outer shape of the screw units 50 and 50a, and forms a space in which screws 52 and 52a and screw holders 56 and 56a can be accommodated, and is opened. The portion may be shielded by a cover member 66 to be described later.

The housing 51 may be formed by bending a plate-shaped metal material or may be formed of a plastic material.

The housing 51 may include a first accommodating portion 511 accommodating the screws 52 and 52a and a second accommodating portion 512 accommodating the second helical gear portions 657 and 657a. have.

The first accommodation part 511 and the second accommodation part 512 may be partitioned by a partition wall 513. The second accommodating part 512 is located below the first accommodating part 511.

Part of the crossover gears 655 and 656 may be accommodated in the second accommodating part 512. That is, the crossover gears 655 and 656 and the second helical gear parts 657 and 657a may be connected within the second receiving part 512.

The lower side of the screw 52, 52a penetrates the partition wall 513, and the second helical gear portions 657, 657a are coupled to the screws 52, 52a that have penetrated the partition wall 513 do.

One or more guide bars 53 and 54 for guiding the rise of the screw holders 56 and 56a may be provided in the housing 51. The one or more guide bars 53 and 54 extend in parallel with the screws 52 and 52a in a state spaced apart from the screws 52 and 52a.

A plurality of guide bars (53, 54) are provided in the housing (51) so that the screw holders (56, 56a) are not inclined to either right or left around the screws (52, 52a), the plurality of guides The screw 52 may be positioned between the bars 53 and 54.

The motor case 61 and the pair of housings 51 may be integrally formed. In addition, a single cover member 66 may cover the motor case 61 and the pair of housings 51.

That is, the cover member 66 is fastened to the motor case 61 to cover the power transmission unit, and is fastened to the pair of housings 51, the screw 52, 52a, the guide bar 53, 54), the screw holders 56 and 56a can be covered.

Of course, if necessary, the cover member 66 may be composed of a plurality of parts respectively shielding the power transmission unit and the screw units 50 and 50a to be configured to open and close each independently.

In the present embodiment, since the driving device 40 exists in the form of a single module, the driving device 40 is compact, so that the driving device 40 can be easily installed on the door part 31.

In addition, since a single cover member 66 covers the motor case 61 and the pair of housings 51 together, when the cover member 66 is separated, it is easily placed inside the power transmission unit or the housing 51. There is an advantage of being able to access, and service is easy.

Meanwhile, a lift detection device 90 may be provided in the screw unit 50a on one side of the screw units 50 and 50a on both left and right sides. Since the left and right screw units 50a are simultaneously operated by one motor assembly 60, even if the lifting detection device 90 is provided only on one screw unit 50a, the operation of the lifting device 80 is effectively performed. Can be detected. Accordingly, the lift detection device 90 may be provided in either of the left and right screw units 50 and 50a.

The elevating detection device 90 is for determining whether the elevating device 80 has been elevated or not, and determines whether the elevating apparatus 80 has elevated or descended based on the operation of the driving device 40.

The lift detection device 90 may be mounted on the cover member 66 and may be vertically disposed along the screw unit 50a.

The lift detection device 90 may include a pair of detection sensors 92 and 93. As the detection sensors 92 and 93, a sensor that detects the magnet 563 may be used. The detection sensor may be a Hall sensor that detects the position of a magnet. Of course, other sensors or devices for sensing the magnet 563 may be provided in place of the Hall sensor as needed. In addition, in place of the magnet 563 and the Hall sensor, another configuration or device capable of detecting a specific position of the screw holder 56a may be used.

One of the detection sensors 92 and 93 is mounted at a position corresponding to the position of the magnet 563 when the lifting device 80 is completed, and the magnet when the lifting device 80 is finished descending The other may be mounted at a position corresponding to the position of 563. Accordingly, when any one of the pair of detection sensors 92 and 93 recognizes the magnet, the lifting device 80 determines that the ascending or descending is completed.

Meanwhile, a PCB connector 642 to which an electric wire for operation of the driving motor 64 is connected is exposed at an upper end of the driving device, and more specifically, an upper end of the motor assembly 60, and the PCB connector 642 A connector mounting portion 613 may be provided that provides a structure for disposing and exposing the device.

Hereinafter, the structure of the motor assembly 60 and the coupling structure of the driving motor 64 and the PCB connector 642 will be described in detail with reference to the drawings.

14 is a view showing the mounting state of the motor and the motor PCB of the driving device. And, FIG. 15 is a partially enlarged view showing the structure of the connector mounting portion of the driving device. And, Figure 16 is a longitudinal cross-sectional view showing the internal structure of the connector mounting portion in a state in which the driving device is mounted. And, Figure 17 is a cross-sectional view showing the internal structure of the connector mounting portion in a state in which the driving device is mounted.

As shown in the drawing, the driving motor 64 and a motor PCB 641 for controlling the operation of the driving motor 64 may be mounted on the motor cover 62. That is, the drive motor 64 and the motor PCB 641 may be accommodated in an internal space provided by the combination of the motor cover 62 and the motor case 61.

The driving motor 64 is inserted into the motor receiving part 621, and a rotation shaft of the driving motor 64 may pass through the motor case 61 and be connected to the driving gear 651. The motor PCB 641 may be mounted on the inner surface of the motor cover 62 and may be mounted on the motor cover 62 in a state coupled to the driving motor 64.

That is, at least a portion of the driving motor 64 is coupled to pass through the motor PCB 641, and the driving motor 64 is mounted on the motor cover 62 in a state coupled to the motor PCB 641 Can be.

In addition, a PCB connector 642 may be provided on the motor PCB 641. The PCB connector 642 may have a connector structure in which the wire 643 can be easily connected, and the wire 643 may have a structure in which the wire 643 can be connected from above. The PCB connector 642 may be provided on one surface from which the rotational shaft of the driving motor 64 protrudes, and may be disposed to face the motor case 61. In addition, it may be formed at a position corresponding to the connector mounting portion 613, therefore, the PCB connector 642 in a state in which the motor case 61 and the motor cover 62 are coupled to the motor cover 62 It can be arranged to be exposed through.

A PCB supporter 625 may be provided on the motor cover 62. The PCB supporter 625 is for supporting the motor PCB 641 from below, and in particular, may support an upper end side of the motor PCB 641 where the PCB connector 642 is located. Accordingly, it is possible to prevent the position of the PCB connector 642 from being changed or separated by a force applied when the PCB connector 642 and the wire 643 are repeatedly connected or connected.

The PCB supporter 625 may have a pair of protrusions, and may be positioned at positions corresponding to both left and right sides of the PCB connector 642. In addition, the PCB supporter 625 may contact the inner surface of the mounting barrier 613b to be described below so that the motor PCB 641 may maintain a fixed state at an accurate position.

The PCB supporter 625 may be located at a position corresponding to the upper end of the motor PCB 641. Further, the protruding end of the PCB supporter 625 may have a stepped portion 625a formed to be stepped. In addition, an upper edge of the motor PCB 641 may be seated on the stepped portion 625a. Accordingly, the motor PCB 641 can maintain a stable mounted state by the PCB supporter 625. Of course, the PCB supporter 625 may be formed into a separate configuration and then fixedly mounted on the inner surface of the motor cover 62.

Meanwhile, the motor cover 62 may have a sealing structure in order to prevent penetration of moisture or foreign substances around the inner periphery of the motor cover 62. In addition, it is possible to more effectively block the inflow of foreign substances between the motor case 61 and the motor cover 62 through a structure that is matched with the motor case 61 or pressurized.

In addition, a cover-side coupling portion 626 for coupling with the motor case 61 may protrude around the motor cover 62. The cover-side coupling portion 626 is formed at a position corresponding to the case-side coupling portion 614 protruding from the motor case 61 and may be formed in a corresponding size and shape. In addition, a screw penetrating the cover-side coupling part 626 and the case-side coupling part 614 is fastened to the cover-side coupling part 626 so that the motor cover 62 and the motor case 61 are firmly Can be fixedly mounted.

Meanwhile, a connector mounting portion 613 may be formed at an upper end of the motor case 61 corresponding to the position of the PCB connector 642. The connector mounting part 613 forms an accommodation space 613d accommodating the PCB connector 642, and the PCB connector 642 is exposed so that the wire 643 can be connected to the PCB connector 642. Make it possible.

In detail, the connector mounting part 613 may include a mounting part barrier 613b and a mounting part rim 613a. In addition, a connector hole 615 through which at least a portion of the PCB connector 642 is exposed may be formed in the connector mounting portion 613. The connector hole 615 may be formed to be opened at one side of the motor case 61 and may be formed at a position corresponding to the PCB connector 642. Preferably, the connector hole 615 is opened at a position corresponding to the upper end of the PCB connector 642 so that the upper surface of the PCB connector 642 is exposed through the connector hole 615.

The mounting part barrier 613b may extend from an inner surface of the motor case 61 toward the motor cover 62, that is, the motor PCB 641. In addition, the mounting barrier 613b may extend downward from both ends of the connector hole 615, and may extend further downward than the connector hole 615. Accordingly, the mounting barrier 613b may form both left and right ends of the connector hole 615, and may extend further downward than the PCB connector 642. In addition, the mounting part barrier 613b connects the extended lower ends of both left and right sides to form a space in which the PCB connector 642 can be accommodated.

That is, the mounting portion barrier 613b is formed at a position slightly away from the left and right sides and lower surfaces of the PCB connector 642, and forms an accommodation space 613d in which the PCB connector 642 can be completely accommodated. do.

Meanwhile, the mounting part barrier 613b may extend to the motor PCB 641. When the motor case 61 and the motor cover 62 are coupled, the mounting barrier 613b comes into contact with the motor PCB 641, and the mounting barrier 613b accommodates the rest except for the connector hole 615 The space 613d may be shielded.

In addition, a mold (or mold liquid) may be injected into the receiving space 613d. When the mold 613e is injected, the inner area of the mounting barrier 613b, that is, the area in which the motor PCB 641 is disposed among the accommodation space 613d, can be filled without a gap, and the motor PCB 641 is It is possible to prevent moisture from penetrating into the space between the disposed motor case 61 and the motor cover 62. The mold 613e may be formed of an insulating material, and may be formed of a resin material or a curable material to be cured after injection.

As the mold 613e is filled in the receiving space 613d, it is possible to prevent moisture and foreign substances from penetrating into the motor PCB 641. That is, the PCB connector 642 is exposed through the connector hole 615, but the rest of the motor PCB 641 exposed through the connector hole 615 excluding the PCB connector 642 is the motor It may be covered by the case 61 or airtight by the mold 613e, thereby preventing damage to the motor PCB 641 by moisture.

In the state in which the mold 613e is injected, the upper end of the PCB connector 642 may be exposed through the connector hole 615, and thus the wire 643 can be connected through the connector hole 615 Is done.

The mounting portion rim 613a may be formed by a portion of the upper surface of the circumferential surface of the motor case 61. The mounting part rim 613a may be spaced upward from the upper end of the mounting part barrier 613b, and may be configured to shield part of the space of the connector hole 615 from above. The mounting portion rim 613a is formed to protrude upward from the upper surface of the motor case 61 and is formed to shield the connector hole 615 from above. Accordingly, it is possible to cover the PCB connector 642 positioned between the mounting barriers 613b from above.

Accordingly, it is possible to block moisture or foreign substances falling from the upper side from directly falling onto the PCB connector 642. In addition, the mounting portion rim 613a may be spaced upward from an upper end of the mounting portion barrier 613b, and may form the accommodation space above the mounting portion barrier 613b. That is, a space may be further formed above the PCB connector 642 to provide a connection space between the PCB connector 642 and the wire 643, and the wire 643 connected to the PCB connector 642 It will provide a space to accommodate this.

Meanwhile, an electric wire entrance 613c opened laterally may be further formed on the mounting portion rim 613a. The wire entrance 613c may be formed by cutting the mounting portion rim 613a, and becomes a passage through which the wire 643 connected to the PCB connector 642 enters and exits. The wire 643 exiting the motor case 61 through the wire entrance 613c may be guided to the door connector 315d through the wire guides 622 and 623.

In addition, a case-side coupling portion 614 coupled to the cover-side coupling portion 626 may be further formed on a part of the periphery of the motor case 61. In addition. A case mounting part 514 for fixing the motor case 61 and the driving device 40 in an assembled state to the door liner 314 is further formed on one side of the circumference of the motor case 61. I can.

Hereinafter, the structure of the drawer unit 32 will be described in more detail with reference to the drawings.

18 is a perspective view of the drawer. And, Figure 19 is an exploded perspective view of the drawer.

As shown, the drawer part 32 is provided on the inside of the drawer body 38 and the drawer body 38 to form the overall shape of the drawer part 32 to lift the container and food. It may include a lifting device 80 and a plurality of plates 391, 392, and 395 forming the inner exterior of the drawer 32.

In detail, the drawer body 38 may be injection formed of a plastic material, and forms the overall shape of the drawer part 32. The drawer body 38 has a basket shape with an open top surface to form a food storage space therein. The rear surface of the drawer body 38 may be an inclined surface 321, so that interference with the machine room 3 may not occur.

The door frame 316 may be mounted on both sides of the drawer part 32. The door frame 316 may be coupled to the frame mounting portions 383 on both sides of the lower surface of the drawer unit 32 or the lower left and right sides of the drawer unit 32, and the door frame 316 is coupled to the drawer unit 32 The drawer part 32 and the door part 31 may be integrally coupled to be drawn in and out together.

The door frame 316 and the drawer unit 32 may be coupled to each other by a coupling structure by a separate coupling member or a fitting structure between the door frame 316 and the drawer unit 32.

Draw-out racks 34 may be provided on both left and right sides of the lower surface of the drawer part 32. The drawer part 32 may be withdrawn in the front and rear direction by the withdrawal rack 34. In detail, at least a portion of the drawer part 32 is located inside the storage space while being mounted on the cabinet 10. In addition, the withdrawal rack 34 may be coupled to a pinion gear 141 provided on the bottom surface of the storage space. Accordingly, when the pull-out motor 14 is driven, the pinion gear 141 rotates to move the pull-out rack 34, and the door 30 can be pulled out.

Of course, the door 30 is not automatically pulled in and out, and the user may push or pull the door 30 to pull in and out. In this case, the pull-out rack 34 is omitted, and the draw-out rail 33 ), the withdrawal may be guided only.

Rail mounting portions 382 on which draw-out rails 33 for guiding the draw-out of the drawer body 38 are mounted may be formed under both side surfaces of the drawer body 38. The rail mounting portion 382 extends from a front end to a rear end, and a space may be formed therein to accommodate the draw-out rail 33.

The draw-out rail 33 is a rail extending in multiple stages, and one end may be fixed to the storage space inside the cabinet 10, and the other end is fixed to the rail mounting part 382 to draw the door 30 out. The mouth can be made more stable.

Further, the drawer body 38 may be provided with a plurality of plates 391, 392, and 395 made of a plate-shaped metal material such as stainless steel to form at least a part of the interior and exterior of the drawer body 38.

In detail, outer side plates 391 may be provided on both left and right side surfaces outside the drawer body 38. The outer side plates 391 are mounted on both left and right sides of the drawer body 38 to form the exterior of both sides, and in particular, the door frame 316 and the draw-out rails mounted on both sides of the drawer body 38 ( 33) It can be prevented from being exposed to the outside.

A plurality of reinforcing ribs 384 may be formed on both sides of the outer surface of the drawer body 38 to intersect in the horizontal and vertical direction. The reinforcing rib 384 increases the strength of the drawer body 38 itself so that the drawer body 38 is more resistant to the weight of the door increased by the provision of the driving device 40 and the lifting device 80. It can be made to keep its shape firmly.

In addition, the reinforcing ribs 384 may support the outer side plates 391 mounted on both side surfaces, and thus, the appearance of the drawer part 32 may be maintained firmly.

Inner side plates 392 may be provided on both left and right sides of the drawer body 38 inside. The inner side plate 392 is mounted on both left and right side surfaces of the drawer body 38 and may form both left and right side surfaces of the drawer body 38.

The inner plate 395 may include a front portion 395a, a bottom portion 395b, and a rear portion 395c having sizes and shapes corresponding to the inner front, bottom, and rear surfaces of the drawer body 38.

The inner plate 395 may be formed by bending a plate-shaped stainless material so as to form the inner side of the rest of the drawer body 38 except for the left and right sides. In addition, left and right side ends of the inner plate 395 may be formed to contact the inner side plate 392. Of course, the front portion 395a, the lower portion 395b, and the rear portion 395c constituting the inner plate 395 may be configured to be separately configured to be coupled to each other or to contact each other.

The entire inner surface of the drawer body 38 may be formed by the inner side plate 392 and the inner plate 395, and the inner surface of the drawer body 38 may provide a metallic texture.

Therefore, the storage space inside the drawer 32 may have a metallic texture as a whole, and the food stored therein can be stored coldly in a more even area as a whole, as well as visually excellent cooling performance and storage performance for the user. Can provide.

The drawer cover 37 is bent at the upper end of the cover front part 371 and the cover front part 371 partitioning the inside of the drawer body 38 into a front space S1 and a rear space S2, It may include a cover upper surface portion 372 shielding the upper surface of the rear space (S2).

That is, when the drawer cover 37 is mounted, only the front space S1 in which the lifting device 80 is disposed may be exposed inside the drawer body 38, and the rear space S2 is the drawer. It can be shielded by the cover 37.

Meanwhile, an elevating device 80 may be provided inside the drawer body 38. The lifting device 80 has a structure that is connected to the driving device 40 so as to be able to move up and down, and both left and right sides may be raised and lowered uniformly.

In order to couple the lifting device 80 and the driving device 40, a drawer opening 35 is formed in the lower front surface of the drawer part 32.

On the other hand, the lifting device 80 is configured as a scissor type, and is folded in a lowered state, and unfolded in an elevated state so that the container or food seated on the upper surface is raised and lowered.

In addition, the lifting device 80 may include a support plate 81, and the support plate 81 may provide a seating surface of the container 36 or a surface on which food is seated.

Meanwhile, the height of the drawer opening 35 may be located at a position lower than the upper end of the lifting device 80, that is, the upper surface of the support plate 81. Accordingly, in the state in which the lifting device 80 is mounted, it is possible to prevent the drawer opening 35 from being visible to the inside of the drawer part 32 in any state.

In addition, the support plate 81 has a size and shape corresponding to the front space to prevent foreign matters from penetrating into the lifting device 80 provided below the front space S1, and the lifting device 80 By blocking access to ), safety accidents can be fundamentally prevented.

20 is a perspective view of a lifting device according to an embodiment of the present invention. And, Figure 21 is a view showing a state in which the upper frame of the lifting device is raised. And, Figure 22 is a view showing a state in which the lever of the present invention is connected to the lifting device.

As shown, the lifting device 80 may be provided on the bottom of the inner side of the drawer part 32, and may be detachably provided on the inside of the drawer part 32.

In addition, the lifting device 80 may include an upper frame 82 and a lower frame 83 and a scissor assembly 84 disposed between the upper frame 82 and the lower frame 83.

In detail, the upper frame 82 is formed in a rectangular frame shape corresponding to the size of the inner front space S1 of the drawer part 32, and the support plate 81 may be mounted on the upper surface.

The upper frame 82 is moved in the vertical direction of the lifting device 80 and substantially supports the food or container 36 together with the support plate 81.

The upper frame 82 may include a frame portion 821 forming a circumferential shape of the upper frame 82 as a whole, and a partition portion 822 partitioning the space inside the frame portion 821 into left and right sides. I can.

Since the frame portion 821 and the partition portion 822 are configured to form an outer frame and support the support plate 81, high strength is required. Accordingly, the frame portion 821 and the partition portion 822 are metal It may be formed of a material, and may be formed in a shape in which both ends are bent to increase strength and prevent deformation.

Further, a slide guide 824 for guiding the movement of the scissor assembly 84 may be formed on the lower side of the frame part 821 by receiving the end of the scissor assembly 84.

The scissor assembly 84 may be disposed in the spaces 823 and 824 on both sides of the partition 822, respectively.

The slide guide 824 may define a long hole 824a through which the scissor assembly 84 can pass. Accordingly, the scissor assembly 84 can be moved along the slide guide 824.

The lower frame 83 may have the same or similar structure to the upper frame 82 only in a direction different from that of the upper frame 82.

The lower frame 83 may include a frame portion and a partition portion. In addition, a slide guide 834 may be formed on the upper surface of the lower frame 83 to accommodate the end of the scissor assembly 84 to guide the movement of the scissor assembly 84.

The slide guide 834 may define a long hole 834a through which the scissor assembly 84 can pass. Accordingly, the scissor assembly 84 can be moved along the slide guide 834.

The scissor assembly 84 may be provided on both left and right sides, and both sides of the scissor assembly 84 operate by receiving power from one driving motor 64, so that it can be raised and lowered by the same height at the same time.

Therefore, even when supporting a heavy load, it can be effectively lifted and lowered by a pair of the scissors assembly 84, which is independently applied to both sides, and at this time, the scissors assembly 84 is the upper frame 82, that is, The support plate 81 may be elevated in a horizontal state.

The scissor assembly 84 may include a first scissor frame 841 in the form of a square frame, and a second scissor frame 845 in the form of a rectangular frame rotatably connected to the first scissor frame 841. have.

The left and right widths of the second scissor frame 845 may be smaller than the left and right widths of the first scissor frame 841. Accordingly, the second scissor frame 845 may be connected to the first scissor frame 841 while being positioned within an area formed by the first scissor frame 841.

The first scissor frame 841 may include a lower shaft 841a and an upper shaft 841b extending in a horizontal direction.

The lower shaft 841a is rotatably supported by the lower frame 83, and the upper shaft 841b is disposed to pass through the sliding guide 824 of the upper frame 82.

The first scissor frame 841 may be connected to a first rod 841a extending in a vertical direction and an upper shaft 841b.

The second scissor frame 845 includes a lower shaft 851a and an upper shaft (not shown) extending in a horizontal direction, and a first rod 852a and a second rod 852b extending in the vertical direction. I can.

The first rod 842a of the first scissor frame 84 includes an extension 842b protruding to be connected to the lever 42, and a coupling portion 842c provided at an end of the extension 842b. It may include.

The lever 42 may include a receiving portion 421a accommodating the coupling portion 842c for coupling with the coupling portion 842c.

An end of the coupling portion 842c may be formed in a non-circular shape. Therefore, when the lever 42 is rotated while the coupling portion 842c is accommodated in the receiving portion 421a, the lever 42 can be prevented from spinning with the coupling portion 842a. .

The coupling part 842a and the extension part 842b may pass through the drawer opening 35, and the extension part 842b may be located on the drawer opening 35. Accordingly, the lifting device 80 inside the drawer part 32 may be connected to the driving device 40 outside the drawer part 32 by the extension part 842b and the coupling part 842a.

Hereinafter, a state in which the door 30 of the refrigerator 1 according to an embodiment of the present invention having the above structure is pulled out and moved up and down will be described in more detail with reference to the drawings.

23 is a perspective view of the lower drawer door in a closed state.

As shown, the refrigerator 1 maintains a state in which both the rotating door 20 and the door 30 are closed when food is stored. In this state, the user can store food by pulling out the door 30.

The door 30 may be provided with a plurality of upper and lower, and may be opened and extended by a user's manipulation.

At this time, the user's operation can be operated by touching the rotating door 20 or the operation unit 301 provided on the front of the door 30, and opening by the operation device 302 provided at the bottom of the door 30 Input of manipulation may be possible.

In addition, the operation unit 301 and the operation device 302 may be configured to individually operate the withdrawal of the door 30 and the lifting and lowering of the lifting device 80, respectively. Of course, it will also be possible for the user to hold the handle of the door 30 and open it.

And, hereinafter, the opening and elevation of the lower drawer door 30b among the doors 30 disposed in the upper and lower directions is described for example, but both the upper and lower doors 30 are withdrawn in the same manner. It will be able to be elevated.

24 is a perspective view of the lower drawer door completely open. 25 is a cross-sectional view of the drawer door when the container of the lower drawer door is completely lowered. 26 is a perspective view showing the state of the driving device and the lifting device in the state of FIG. 25;

As shown, the lower drawer door 30b is pulled forward according to the user's pulling out operation of the lower drawer door 30b. The lower drawer door 30b may be pulled out while the pull-out rail 33 is extended.

On the other hand, the lower drawer door 30b may be configured not to be opened by pulling directly by a user, but to be withdrawn by driving the withdrawal motor 14.

The draw-out rack 34 provided on the bottom surface of the lower drawer door 30b may be coupled with a pinion gear 141 that is rotated when the draw-out motor 14 provided in the cabinet 10 is driven, and thus The lower drawer door 30b is pulled in and out as the pull-out motor 14 is driven.

The draw-out distance of the lower drawer door 30b may be extended to at least a distance at which the front space S1 inside the drawer part 32 can be completely exposed to the outside. Accordingly, in such a state, when the lifting device 80 is raised or lowered, the container or food does not interfere with the doors 20 and 30 or the cabinet 10 disposed above.

In this case, the draw-out distance of the lower drawer door 30b may be determined by the draw-out detection device 15 disposed on the cabinet 10 and/or the lower drawer door 30b.

The in/out detection device 15 may be configured as a detection sensor that detects a magnet 389 so that the lower drawer door 30b is completely pulled out or closed.

For example, as shown, a magnet 389 may be provided on the bottom of the drawer 32 and a detection sensor may be provided on the cabinet 10. The withdrawal detection device 15 corresponds to the position of the magnet 389 when the lower drawer door 30b is closed and the position of the magnet 389 when the lower drawer door 30b is completely withdrawn. It can be provided in a position. Accordingly, it is possible to determine the state of the drawing in and out of the lower drawer door 30b by the drawing in/out detecting device 15.

In addition, if necessary, a switch is provided at a position where the lower drawer door 30b is completely retracted and a position at which the lower drawer door 30b is completely retracted, so that the lower drawer door 30b may be sensed withdrawal and/or rotation of the withdrawal motor 14 The number may be counted, or the withdrawal of the lower drawer door 30b may be detected by a sensor measuring a distance between the rear surface of the door 31 and the front end of the cabinet 10.

When the lower drawer door 30b is completely withdrawn, the driving motor 64 is driven to operate the lifting device 80. The elevating device 80 may be configured to be operated in a situation in which the lower drawer door 30b is sufficiently drawn out to ensure a safe elevating of the food or container 36 seated in the elevating device 80.

That is, when the lower drawer door 30b is pulled out and the front space S1 is completely exposed to the outside, the lifting device 80 is operated and the container 36 seated in the lifting device 80 or stored It is possible to prevent food from interfering with the other doors 20 and 30 or the cabinet 10.

Looking in more detail at the state in which the lower drawer door 30b is pulled out, when the lower drawer door 30b is pulled out for lifting, the front space S1 is completely outside the lower storage space 12. It must be withdrawn.

In particular, the rear end (L1) of the front space (S1) must be in a state that is more pulled out than the front end (L2) of the cabinet 10 or the upper door 20, and prevent interference when the lifting device 80 is elevated. In order to prevent it, it must be located in front of the cabinet 10 or the front end L2 of the upper door 20 at least.

In addition, when the lifting device 80 is pulled out to be driven, the entire drawer 32 is not completely pulled out and, as shown in FIG. 25, only to a position to avoid interference during lifting of the lifting device 80. Can be withdrawn. At this time, at least a portion of the rear space S2 of the drawer 32 is located inside the lower storage space 12. That is, the rear end L3 of the drawer part 32 is positioned at least inside the lower storage space 12.

Therefore, even when the weight of the lower drawer door 30b including the driving device 40 and the lifting device 80 is added to the weight of the storage object, the draw-out rail 33 or the lower drawer door 30b ) It is possible to ensure stable withdrawal and lifting operation without sagging or damage of itself.

The lifting device 80 may start ascending when it is confirmed that the lower drawer door 30b is completely withdrawn. In addition, in order to prevent damage to the user's safety and stored food, the operation of the lifting device 80 may be started after a set time has elapsed after the withdrawal of the lower drawer door 30b is confirmed.

Of course, after the lower drawer door 30b is withdrawn, the user may directly input the operation of the lifting device 80 by manipulating the manipulation unit 301. That is, the operation unit 301 may be operated to withdraw the door 30, and the operation unit 301 may be operated again to operate the lifting device 80.

In addition, the lower drawer door 30b may be operated by a user manually pulling out the operation unit 301 to operate the lifting device 80.

Meanwhile, the driving device 40 and the lifting device 80 are not operated until the lower drawer door 30b is completely pulled out as shown in FIG. 25, and the lifting device 80 is the lowest. You will stay in the state.

In the state before the lifting device 80 is raised, the lever 42 and the screw holder are located at the lowest position, and the lifting device 90 detects this and the current state is determined by the lifting device 80 Is judged to be in a state that is completely lowered.

When it is determined that the lifting device 80 is in a completely lowered state by the lifting detection device 90, the driving device 40 starts operation when the user manipulates or completely withdraws the lower drawer door 30b. can do.

If the lifting detection device 90 determines that the lifting device 80 is not completely lowered, an abnormal signal may be output and the driving device 40 may not be operated.

27 is a cross-sectional view of the drawer door when the container of the lower drawer door is completely raised. And, Figure 28 is a perspective view showing the state of the driving device and the lifting device in the state of Figure 27.

As shown, in a state in which the lower drawer door 30b is withdrawn, when an operation signal of the driving device 40 is input, the driving device 40 is operated, and the lifting of the lifting device 80 is performed. Thus, the state as shown in FIG. 22 may be obtained.

In this embodiment, the lifting of the lifting device 80 means that the upper frame 82 is raised by the scissor assembly 84, and the descending of the lifting device 80 is caused by the scissor assembly 84. This means that the upper frame 82 is lowered.

The driving device 40 is in a state connected to the lifting device 80, and thus, power can be transmitted to the lifting device 80. With the start of the operation of the driving device 40, power is transmitted to the lifting device 80, and the lifting device 80 starts to ascend.

In detail, when the driving motor 64 rotates forward and backward by a rising or falling signal of the lifting device 80, the driving device 40 starts an operation.

Looking at the operation of the lifting device 80 ascending, the driving gear 651 rotates by the driving of the driving motor 64. The rotational force of the drive motor 64 is transmitted to the crossover gears 655 and 656 through the first to third transmission gears 652, 653 and 654 by the rotation of the drive gear 651.

The second helical gear portions 657 and 657a connected to the crossing gears 665 and 656 are rotated by the crossing gears 655 and 656 to change the power transmission direction. In addition, the screws 52 and 52a connected to the second helical gear units 657 and 657a are rotated.

At this time, since the same rotational force is transmitted to the screws 52 and 50a on both sides, the screw holders 56 and 56a are simultaneously raised by the same height.

As the screw holders 56 and 56a rise, the lever 42 connected to the screw holders 56 and 56a rotates. As the lever 42 connected to the screw holders 56 and 56a is rotated, the height of the lever 42 is increased, and a first connected to the lever 42 is increased by increasing the height of the lever 42. 1 The height of the first rod 842a of the scissor frame 84 is increased.

The scissor assembly 84 can be unfolded by increasing the height of the first rod 842a of the first scissor frame 84.

Eventually, as the scissor assembly 84 is unfolded, the upper frame 82 rises, and the container 36 or food seated on the support plate 81 rises, and finally, as shown in FIG. The lifting device 80 is raised to the maximum height.

On the other hand, the lifting device 80 is continuously raised and stops when it is raised to a sufficient height to facilitate access to the food or container 36 mounted on the lifting device 80 as shown in FIG. 27. In such a state, the user can easily lift the food or container 36 without excessively bowing the waist.

When the lifting device 80 is raised, the lever 42 and the screw holder are located at the highest positions, and the lifting detection device 90 detects this and the current state is determined by the lifting device 80 It is judged to be in a completely elevated state.

When it is determined by the lifting detection device 90 that the lifting device 80 is in a fully raised state, the driving motor 64 is stopped. In such a state, the lifting device 80 is located inside the drawer part 32, but the food or container 36 seated in the lifting device 80 is more than the opened upper surface of the drawer part 32. It can be located in a high position, allowing easy access by the user.

In particular, since it is not necessary to bend the waist excessively for lifting the container 36, a safer and more convenient operation is possible.

Looking in more detail at the state in which the lifting device 80 is raised to the maximum, the lifting device 80 is positioned at a lower position than at least the upper end of the drawer part 32.

When the container 36 is seated in the driving device 80 and viewed from the container 36, the upper end H1 of the container 36 is the upper end H2 of the lower storage space 12. ) Can be raised to a higher position. The height at this time is such that the user can reach out and lift the container 36 without bending the waist, and may be the most suitable height for use.

That is, the driving device 40 has a structure that is lifted from the inside of the drawer part 32, but the container 36 is in a state in which the container 36 is seated in the lifting device 80. It can be located at a height that is easily accessible.

After the user's food storage operation is completed, the user may lower the lifting device 80 by operating the operation unit 301. The lowering of the lifting device 80 may be performed by reverse rotation of the driving motor 64, and may be gradually performed through a process opposite to the above-described process.

In addition, when the lifting device 80 is lowered, it is in a state as shown in FIG. 25. At this time, the completion of the descending of the lifting device 80 is also performed by the lifting detection device 90. When the magnet is detected by the detection sensor 93 located below, the lifting device 80 determines that the descending has been completed, and the driving device 40 stops.

In addition, after the drive motor 64 is stopped, the lower drawer door 30b may be retracted. In this case, the lower drawer door 30b may be closed by a user's manipulation, or may be closed by driving the withdrawal motor 14. When the lower drawer door 30b is completely closed, the state as shown in FIG. 23 may be obtained.

Claims (20)

A cabinet in which a storage space is formed;
A door including a door unit for opening and closing the storage space and a drawer unit for providing a storage space;
A rail connecting the door and the cabinet and for withdrawing the door;
A driving device provided on the door to provide power;
It is provided in the drawer and is connected to the driving device to move a part of the drawer up and down; includes,
The driving device,
Motor assembly;
A screw unit connected to the motor assembly and elevating;
Including; a lever for connecting the screw unit and the lifting device to lift the lifting device,
The motor assembly,
motor;
A motor PCB connected to the motor;
A motor case in which the motor PCB is disposed;
And a motor cover coupled to the motor case and accommodating the motor and the motor PCB.
The method of claim 1,
The motor PCB is formed in a plate shape and penetrates by a rotating shaft of the motor.
The method of claim 1,
The motor PCB has a connector to which an electric wire is connected,
A refrigerator, wherein a connector hole is formed in the motor case to expose the connector to the outside.
The method of claim 3,
The connector hole is a refrigerator, characterized in that located on the upper end of the motor assembly.
The method of claim 3,
And a barrier extending in contact with the motor PCB and forming an accommodation space in which the connector is located is formed in the motor case.
The method of claim 5,
The barrier is a refrigerator, characterized in that formed to surround the connector on the outside of the connector.
The method of claim 5,
Refrigerator, characterized in that the receiving space formed by the barrier communicates with the connector hole.
The method of claim 5,
A refrigerator, characterized in that a mold for waterproof treatment is filled in the space formed by the barrier.
The method of claim 8,
A refrigerator, characterized in that an edge forming a circumferential surface of the motor case has an edge of a mounting portion extending to shield the accommodation space from above.
The method of claim 5,
And a PCB supporter protruding toward the motor PCB at a position corresponding to the connector and supporting the motor PCB in close contact with the barrier.
The method of claim 10,
The PCB supporter is provided with a pair on both left and right sides,
Refrigerator, characterized in that extending from the inside of the receiving space to contact the inner side of the barrier.
The method of claim 10,
A refrigerator, characterized in that a stepped portion is formed at an extended end of the PCB supporter so that an upper edge of the PCB is seated.
The method of claim 3,
A door connector connected by an electric wire to the PCB connector is formed at the lower end of the door part,
The door connector is a refrigerator, characterized in that connected to the wire extending from the cabinet.
The method of claim 13,
And a wire guide for guiding an electric wire connecting the PCB connector and the door connector to the motor cover.
The method of claim 14,
The wire guide,
A first wire guide extending in a spaced state along the circumference of the motor accommodating portion in which the motor is accommodated,
And a hook-shaped second wire guide disposed below the motor accommodating part toward the door connector at regular intervals.
A cabinet in which a storage space is formed;
A drawer door through which the storage space is slid and drawn in and out;
A driving device provided on a rear surface of the drawer door;
Includes; an elevating device provided in the drawer to elevate,
The driving device,
Motor assembly;
A pair of screw units connected to the motor assembly at both sides of the motor assembly to operate at the same time, and including a rotating screw and a screw holder vertically moved along the screw;
Including; a lever coupled to the screw holder and rotated according to the movement of the screw holder, and connected to the lifting device to lift the lifting device,
The motor assembly,
motor;
A motor PCB connected to the motor and having a PCB connector to which an electric wire is connected;
Includes; a motor case in which the motor and the motor PCB are accommodated,
The refrigerator, characterized in that the motor case is provided with a connector mounting portion mounted to expose the PCB connector.
The method of claim 16,
The connector mounting portion,
A connector hole opened at an upper end of the case to expose the PCB connector;
And a barrier extending from the motor case to the motor PCB to form an accommodation space for the PCB connector,
The refrigerator, characterized in that the mold is filled in the accommodation space.
The method of claim 16.
The pair of screw units are arranged to be closer to each other from the top to the bottom,
A refrigerator, characterized in that the lower end of the screw unit and the motor assembly are connected to each other under the door.
The method of claim 18,
The motor assembly,
Further comprising a gear assembly consisting of a plurality of gear combinations connecting the upper motor and the lower screw unit,
A refrigerator, characterized in that the plurality of gears are continuously arranged in a vertical direction.
The method of claim 16,
A refrigerator, characterized in that further housings for accommodating the screw and the screw holder are formed on both sides of the motor case.

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