KR20200134777A - Refrigerator - Google Patents

Abstract

The present invention relates to a refrigerator. According to an embodiment of the present invention, the refrigerator comprises: a cabinet having a storage space formed therein; a door having a door unit opening and closing the storage space and having a drawer unit providing an accommodation space; a rail connecting the door and the cabinet and allowing the door to be drawn in and out; a driving device provided to the door unit to provide power; a lifting device provided inside the drawer unit and connected to the driving device to vertically move a portion of the drawer unit; and a drawer opening formed on a front surface of the drawer unit and opened at a position corresponding to the driving device to form a connection passage between the driving device and the lifting device. Moreover, a hole cover shielding the drawer opening when the driving device and the lifting device are connected is provided on one side corresponding to the drawer opening.

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.

In addition, the driving unit of the lifting mechanism has a structure that allows the bin to be lifted by pushing one end of the caesar support assembly, and thus, when a large bin structure or a heavy object is placed inside the bin There is a problem that it cannot provide enough power for. Of course, in order to solve this problem, the size of the motor of the driving unit may be increased, but in this case, there are problems such as high volume loss and noise, and manufacturing cost increases.

In addition, the lifting mechanism supports one side of the entire bottom surface of the bin due to the position of the driving part, and therefore, an offset load is inevitably generated when the bin is filled with storage. In addition, a serious problem may occur in stability due to an offset load applied in a state in which the door is pulled out, and there is a problem that the lifting operation cannot be performed smoothly.

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 capable of reducing noise during an elevating operation of a drawer door.

An object of the present invention is to provide a refrigerator that facilitates an elevating operation of a drawer door.

An embodiment of the present invention aims to provide a refrigerator that can guarantee user safety.

An object of the present invention is to provide a refrigerator that prevents foreign objects from getting caught between a driving device and an elevator device when a drawer is used.

An object of the present invention is to provide a refrigerator capable of shielding a drawer opening for connecting a driving device and an elevator device regardless of an operating state of the elevator device.

An embodiment of the present invention aims to provide a refrigerator capable of improving assembly properties and productivity by simplifying the coupling structure of the hole cover that shields the drawer opening.

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; An elevating device provided inside the drawer and connected to the driving device to move a portion of the drawer up and down; A drawer opening formed on the front side of the drawer and opening at a position corresponding to the driving device to form a connection passage between the driving device and the lifting device; and provided on one side corresponding to the drawer opening, and the driving device It may include a hole cover for shielding the opening of the drawer when connected to the lifting device.

The hole cover may be provided between the rear surface of the door and the front surface of the drawer.

The hole cover may be formed larger than the size of the drawer opening.

The driving device may include a motor assembly; A screw unit including a screw that is disposed on both sides of the motor assembly and is connected to the motor assembly to operate at the same time, and includes a screw that rotates and a screw holder that moves up and down along the screw; A lever that is coupled to the screw holder and rotates according to the movement of the screw holder, and is connected to the lifting device to provide power for lifting the lifting device, and the hole cover may be mounted on the lever.

The lever has a lever-side connection portion protruding toward the drawer opening at a position corresponding to the rotation axis of the lever, and coupled to the lifting device, and the hole cover is mounted on the lever-side connection portion, and rotation of the lever Can be rotated with the poem.

The hole cover may extend outwardly along the circumference of the lever-side connection portion, and may extend further outwardly than the drawer opening.

A cover insertion hole through which the lever-side connection part is inserted may be formed in the hole cover.

The elevating device may be provided with a scissor-side connection portion extending toward the drawer opening and detachably coupled to the lever-side connection portion.

The elevating device includes a pair of scissor assemblies disposed on both left and right sides, the scissor side connecting portion being rotated around an axis to elevate and descend; It is coupled to an upper end of the scissor assembly, and may include an upper frame forming a bottom surface to be raised and lowered inside the drawer.

The lever-side connection part may form a recessed accommodation space in a shape corresponding to the scissor-side connection part so that the scissor-side connection part serving as the rotation axis of the lifting device is inserted.

The lever-side connection part may include a rotation boss part serving as a rotation axis of the lever and the lifting device, and a lever protrusion extending along the lever from the rotation boss part to assist rotation of the lifting device.

The drawer opening may be formed larger than a radius of rotation of the lever protrusion.

The hole cover includes a cover coupling portion formed along the rotation boss portion, coupled to the rotation boss, and a shield portion formed along the lever protrusion, and shielding the drawer opening, and the shielding from the cover coupling portion The width of the negative can be formed larger.

The hole cover may be formed in a plate shape, the hole cover may be formed in a shape corresponding to the lever-side connection portion, and a cover insertion hole through which the lever-side connection portion passes.

The hole cover may include a cover coupling part surrounding the rotation axis of the lever, and a shielding part extending from the rotation boss part and formed to have a width greater than the width of the drawer opening to shield the drawer opening. .

A cover fastening hole through which a screw is fastened to the lever may be formed in the shielding part.

An inner rim extending along the circumference of the cover insertion hole and in contact with the circumferential surface of the lever-side connection portion may be formed.

In the lever-side connection part, a connection part protrusion is formed to protrude, an rim groove into which the connection part protrusion is inserted is formed in the inner rim, and when the hole cover is mounted, the connection part protrusion may be inserted into the rim groove.

The connecting portion protrusion and the rim groove may extend in the same direction as the protruding direction of the lever-side connecting member.

An outer rim protruding in the same direction as the protruding direction of the inner rim may be formed around the outer circumference of the hole cover.

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. In addition, a driving device composed of an electric device for providing power is provided inside the door part, and the lifting device for lifting is provided inside the drawer part so that both the driving device and the lifting device are not exposed to the outside. It is possible to ensure stability and improve the appearance.

In particular, the driving device composed of an electric device is disposed inside the door unit to fundamentally block a user's access, and thus, an effect of preventing the occurrence of a safety accident can be expected.

In addition, it is possible to minimize the loss of storage capacity of the drawer part by arranging the driving device that occupies a significant part of the entire configuration in the door part. In addition, the lifting device or in a lowered state has an advantage of securing a storage capacity in the compartment by having a structure that is compactly folded and accommodated.

In addition, when a service is required during an abnormal situation or inspection, the door part and the drawer part are separated so that service through the door part in which the electric device is disposed is possible, so that service performance can be remarkably improved.

In addition, the drive device is provided with screw units on both sides, and by providing power to both sides of the lifting device, there is an advantage in that food or containers with high loads can be smoothly lifted. In addition, since the screw units on both sides receive the driving force of one motor, there is an advantage that it is possible to ensure that the lifting device is always raised and lowered in a horizontal state without any separate control or configuration.

In addition, a drawer opening is formed on the front surface of the drawer for connection between the driving device and the lifting device, and the drawer opening is shielded by a hole cover. Particularly, the hole cover makes it possible to always close the drawer opening regardless of the operation or stop of the driving device and the lifting device.

Therefore, it is possible to prevent the user's hand from getting caught through the drawer opening in the process of storing food in the drawer, and thus there is an advantage in that the occurrence of a safety accident can be fundamentally prevented.

In addition, since the drawer opening can always be kept in a shielded state, foreign matter existing inside the drawer can be prevented from being caught in the drawer opening or affecting the operation of the lifting device or the driving device through the drawer opening. .

In addition, the hole cover is coupled to the lever of the driving device, and can be rotated together with the lever, thereby effectively shielding the drawer opening even during operation of the lever.

In addition, the hole cover has a simple mounting structure by having a structure that is inserted and fixed to the lever-side connection portion of the lever, and thus, an effect of improving assemblyability and productivity can be expected.

In addition, the hole cover is composed of a cover coupling portion adjacent to the rotation axis of the lever, and a shielding portion that substantially shields the drawer opening, and by widening the configuration of the shielding portion, interference of the hole cover can be prevented when the lever is operated. There is an advantage.

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 an exploded perspective view of a state in which the lifting device is separated from the drawer door.
6 is a rear view of the door part.
7 is a rear perspective view of the door part with the door cover removed.
8 is a perspective view showing a mounting state of a hole cover according to an embodiment of the present invention.
9 is a perspective view of the hole cover as viewed from another direction.
10 is a cross-sectional view of a state in which the hole cover is mounted.
11 is a cross-sectional view showing a connection state between the driving device and the lifting device.
12 is a perspective view of the driving device and the lifting device as viewed from the front of the connected state.
13 is a rear perspective view of the driving device.
14 is a rear perspective view showing the internal structure of the driving device.
15 is a partially enlarged view showing a structure in which power is transmitted to a screw of the driving device.
16 is a perspective view of the drawer.
17 is an exploded perspective view of the drawer part.
18 is a perspective view of a lifting device according to an embodiment of the present invention.
19 is a view showing a state in which the upper frame of the lifting device is raised.
20 is a partially enlarged view showing a state in which a hole cover and a lifting device are coupled to the lever of the present invention.
21 is a perspective view of the lower drawer door in a closed state.
22 is a perspective view of the lower drawer door fully open.
23 is a cross-sectional view of the drawer door when the container of the lower drawer door is completely lowered.
FIG. 24 is a perspective view showing states of the driving device and the lifting device in the state of FIG. 23.
25 is a view showing a relationship between the hole cover and the drawer opening in the state of FIG. 23.
26 is a cross-sectional view of the drawer door when the container of the lower drawer door is completely raised.
FIG. 27 is a perspective view showing states of the driving device and the lifting device in the state of FIG. 26;
28 is a view showing a relationship between the hole cover and the drawer opening in the state of FIG. 26;

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. And, Figure 5 is an exploded perspective view of a state in which the lifting device is separated from the drawer door.

As shown, the door 30 has a door part 31 for opening and closing the storage space, and a drawer part 32 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.

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 an upper storage space, and the outside of the drawer part 32 may have an exterior formed by a plurality of plates (391,392,395 in FIG. 13).

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 unit 32 may be formed by plates (see 391, 392, and 395 in FIG. 17), and the outer and inner appearances of the drawer unit 32 are shielded by shielding the components mounted on the drawer unit 32. You can make it look neat. The plates (see 391, 392, and 395 in FIG. 17) 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. 7) for lifting the lifting device 80 may be disposed on 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. 7) 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. Accordingly, when the service of the driving device (refer to 40 in FIG. 7) 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.

A scissor-side connection part 842, which is a rotation axis of the lifting device 80, may be exposed inside the drawer opening 35. Accordingly, when the scissor side connection part 842 is connected to the driving device 40, the lifting device 80 may be in an operable state.

In addition, the drawer openings 35 may be formed at both front and left ends of the left and right drawer portions 32. In addition, between the drawer openings 35, a plurality of ventilation holes 381 may be formed to allow air to flow inside and outside the drawer part 32. The vent 381 may be formed lower than the height of the lifting device 80, and thus, the drawer opening 35 and the vent 381 may be covered when the lifting device 80 is mounted.

On the other hand, the lifting device 80 has a structure that can be separated from the drawer 32 according to the user's operation. That is, when the volume inside the drawer part 32 is increased or the lifting function is not used, the lifting device 80 is lifted and separated from the inside of the drawer part 32.

At this time, the scissor side connection part 842 of the lifting device 80 connected to each other and the lever side connection part 422 of the driving device 40 are first separated, and then the lifting device 80 is removed from the drawer part 32. Will be lifted. In addition, the drawer opening 35 at the front of the drawer 32 may be shielded by the hole cover 43 to prevent the user's fingers from being inserted during operation.

In addition, by separating the lifting device 80, the drawer opening 35 and the ventilation hole 381 at the front of the drawer part 32 may be exposed.

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 portion 31 constituting the door 30 will be described in more detail with reference to the drawings.

6 is a rear view of the door part. And, Figure 7 is a rear perspective view of the door portion of the door cover removed.

As shown, 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.

Further, the door liner 314 may be formed with a door recessed portion that is recessed inward. The door depression may be formed in a shape corresponding to the shape of the driving device 40. In addition, the door depression may be formed to further mount electrical components including a door light 318 for illuminating the interior of the chamber.

The door light 318 may be long disposed in the horizontal direction from the left side to the right side of the rear surface of the door 30. 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 shield the rest of the driving device 40 except for the lever-side connection part 422 when the driving device 40 is mounted.

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 may be cut to expose a portion for coupling with the door frame 316.

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 drawer-side connection part 422 of the lever 42, which is a component of the driving device 40, and is connected to the drawer-side connection part 422 through the cover opening 315b. Access 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 combined, the cover opening 315b and the drawer opening 35 may communicate with each other, and thus, the cover opening 315b and the drawer opening Through 35, the drawer-side connection part 422 and the scissor-side connection part 842 of the lifting device 80 may be coupled. 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 is possible to separate only the lifting device 80 through the separation of the drawer side connection part 422 and the scissor side connection part 842 in a state in which the door part 31 and the drawer part 32 are coupled. will be.

Looking in more detail with respect to the cover opening (315b) with reference to Figure 6, the cover opening (315b) is on both sides of the door portion 31 corresponding to the rotation axis of the lever 42 and the lifting device 80 Is formed. In addition, it may be formed to have a size corresponding to the turning radius of the lever-side connection portion 422 so as not to interfere with the rotating lever-side connection portion 422.

That is, the cover opening 315b may include a cover-side central portion 315c and a cover-side radius portion 315d. The cover-side central portion 315c forms both side ends of the cover opening 315b and may be formed at a position corresponding to a rotation center of the lever-side connection part 422. Accordingly, the cover-side central portion 315c may be formed to have a size corresponding to the rotation boss portion 422b of the lever-side connection portion 422. The cover-side radius portion 315d is formed to have a size corresponding to the turning radius of the lever-side connection portion 422, and may be formed to have a relatively larger size than the cover-side central portion 315c.

Accordingly, the cover opening 315b must be formed to be larger than the size of the lever-side connection part 422, and a space opened outside the lever-side connection part 422 is formed. Among the cover openings 315b, a space exposed to the outside of the lever-side connection part 422 may be blocked by the hole cover 43. The hole cover 43 is mounted on the lever 42, rotates together when the lever 42 is rotated, and can always shield the cover opening 315b regardless of the rotation operation of the lever 42. Can be formed in size.

On the other hand, in the center of the lower end of the door cover 315, a cable hole 315e through which cables connected to electrical components such as the driving device 40 provided in the door part 31 and the door light 318 enter and exit is further provided. Can be formed. Wires entering and leaving through the cable hole 315e may pass under the drawer 32 and be connected to the cabinet 10.

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.

The driving device 40 may be shielded by the door cover 315 and disposed inside the door part 31. The driving device 40 is connected to the lifting device 80, and 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.

The driving device 40 includes a motor assembly 60, a pair of screw units 50 disposed on both sides of the motor assembly 60, and a pair of levers connected to each of the screw units 50 (42) may be included. In addition, the screw unit 50 may include a screw 52 and a screw holder 56 which is penetrated by the screw 52 and is raised and lowered along the screw unit 50.

Meanwhile, the lever 42 has a lever-side connection part 422 formed at one end of the lever extension part 421, and the lever-side connection part 422 is rotatably fixed to the rear surface of the door part 31. Further, a lever hole 423 through which the holder fastening member 564 is fastened may be formed at the other end of the lever extension 421.

The lever hole 423 is formed in a long hole shape, guides the movement of the holder fastening member 564, and allows the holder fastening member 564 to be fastened to the screw holder 56 at the same time. Accordingly, the lever 42 is rotated by the screw holder 56 that is raised and lowered when the screw 52 is rotated. The driving device 40 will be described in more detail below.

A lever-side connection part 422 for coupling with the driving device 40 may be formed at one end of the lever 42 serving as a rotation axis. In addition, the hole cover 43 may be mounted on the lever-side connection portion 422 to shield the cover opening 315b and the drawer opening 35. On the other hand, in the embodiment of the present invention, the door cover 315 and the cover opening 315b are disclosed, but the door cover 315 is not an essential configuration, and when the door cover 315 is omitted, the hole cover 43 may shield only the drawer opening 35.

Hereinafter, the coupling structure of the hole cover 43 and the hole cover 43 will be described in more detail with reference to the drawings.

8 is a perspective view showing a mounting state of a hole cover according to an embodiment of the present invention. And, Figure 9 is a perspective view of the mounting state of the hole cover viewed from another direction. And, Figure 10 is a cross-sectional view of the hole cover is mounted. And, Figure 11 is a cross-sectional view showing a connection state of the driving device and the lifting device.

As shown, a plurality of reinforcing ribs 421a may be formed on the rear surface of the lever extension part 421. A very high load may be applied to the lever 42 for the operation of the lifting device 80, and a grid-shaped reinforcing rib 421a is formed on the entire rear surface of the lever extension part 421 to prevent damage. Can be. In addition, the lever 42 may be formed of an aluminum alloy material having high strength as a whole, and may be formed by die casting.

In addition, a lever-side connection portion 422 protruding toward the drawer portion 32 is formed at an end portion of the lever 42 serving as a rotation axis. The lever-side connection part 422 may vertically protrude from an outer surface of the lever extension part 421. An accommodation space 422c into which the scissor-side connection part 842 is inserted may be formed in the lever-side connection part 422. The accommodation space 422c is formed to have a size corresponding to the scissor side connection part 842 and is formed to a predetermined depth so that the scissor side connection part 842 can be rotated together when the lever side connection part 422 is rotated. To be.

In addition, the lever-side connection part 422 includes a rotation boss part 422b serving as a rotation axis of the lever-side connection part 422, and a lever protrusion extending in an extension direction of the lever 42 from the rotation boss part 422b. (422a) may be included. The accommodation space 422c may be defined by the rotation boss part 422b and the lever protrusion 422a.

The rotating boss part 422b is formed through the boss hole 422d, and a lever bushing 44 and a fastening member 440 for fastening the lever 42 may be mounted in the boss hole 422d. have. In detail, the rotation boss part 422b may be formed in a cylindrical boss shape, and may be inserted into one side of the door liner 314. In addition, the lever bushing 44 is inserted into the rotating boss part 422b, and the lever bushing 44 passes through the boss hole 422d to support the lower end of the door liner 314. have. In addition, the fastening member 440 penetrates the lever bushing 44 and is fastened to the door liner 314, so that the lever 42 can be rotated about the lever bushing 44 as an axis.

The bottom surface of the rotating boss part 422b on which the boss hole 422d is formed is formed to be stepped, and the scissor-side connection part 842 is in the receiving space 422c even when the lever bushing 44 is mounted. It will not interfere when inserted.

The lever protrusion 422a is formed to protrude from the rotation boss 422b in the extending direction of the lever 42. In addition, a part of the accommodation space 422c may be formed inside the lever protrusion 422a. Due to the lever protrusion 422a, the rotational force of the lever 42 can be transmitted to the lifting device 80 more effectively. That is, the lever 42 can raise the lifting device 80 with less force by the action of the lever protrusion 422a.

In addition, the connection part protrusion 422e may be formed on the outer surface of the lever protrusion part 422a. The connecting portion protrusion 422e protrudes vertically from the outer surface of the lever protrusion 422a, and may extend along the protruding direction of the lever protrusion 422a. In addition, a plurality of the connecting portion protrusions 422e may be disposed spaced apart from each other, and may be coupled to the rim groove 438 to be described below to constrain the hole cover 43.

The hole cover 43 may be formed of a plastic material, and may be formed in a plate shape. The hole cover 43 may be coupled to the lever-side connection part 422, and a cover insertion hole 433 through which the lever-side connection part 422 is penetrated may be formed in the hole cover 43.

The cover insertion hole 433 may be formed in a shape corresponding to a circumferential shape of the lever-side connection part 422. That is, the cover insertion hole 433 is formed to correspond to the shape of the outer surface of the rotating boss part 422b and the lever protruding part 422a of the lever-side connection part 422, so that the outer surface of the lever-side connection part 422 is It may be in close contact with the inner surface of the cover insertion hole 433.

In addition, an inner rim 437 extending toward the door part 31 may be formed along the circumference of the cover insertion hole 433. Accordingly, the inner rim 437 may be in close contact with the circumferential surface of the lever-side connection part 422, and a stable connection between the hole cover 43 and the lever-side connection part 422 is ensured. In addition, an edge groove 438 may be cut and formed at an extended end of the inner edge 437. Accordingly, when the hole cover 43 is mounted on the lever-side connecting portion 422, the connecting portion protrusion 422e may be inserted into the edge groove 438. The hole cover 43 may be stably fixed on the lever-side connection part 422 by the coupling of the connection part protrusion 422e and the edge groove 438. In addition, the lever-side connection part 422 may pass through the hole cover 43 and protrude to an appropriate height, and the hole cover 43 may be spaced apart from the lever extension 421 to an appropriate height.

In addition, an outer rim 436 extending toward the door portion may be further formed along an outer circumference of the hole cover 43. Strength of the plate-shaped hole cover 43 may be reinforced by the outer rim 436, and the shape of the hole cover 43 may be maintained. The outer rim 436 may be formed on the entire cover coupling portion 432 and the shielding portion 431 of the hole cover 43.

Meanwhile, the hole cover 43 may be composed of a cover coupling part 432 and a shielding part 431. The cover coupling portion 432 is formed along the circumference of the rotation boss portion 422b, and allows the hole cover 43 to be coupled to the lever-side connection portion 422. The cover coupling portion 432 does not need to substantially shield the cover opening 315b and the cover opening 315b, and has a minimum width to prevent interference with other components when the lever 42 is rotated. Can be formed.

In addition, the shielding part 431 extends from the cover coupling part 432 and is formed to shield the cover opening 315b and the drawer opening 35. That is, the shielding part 431 may be formed to have a greater width than the cover coupling part 432 and may be formed to have a greater width than a radius of the lever-side connection part 422. Accordingly, the cover opening 315b and the drawer opening 35 can be shielded in any state regardless of rotation or stop of the lever 42. The shielding part 431 may extend in the extending direction of the lever protruding part 422a among the lever-side connection parts 422, and may extend outwardly by a predetermined width from the outside of the lever protruding part 422a.

In addition, a cover fastening hole 434 to which a screw 435 for fixing the hole cover 43 is fastened may be formed at one side of the shielding part 431. The cover fastening hole 434 may be formed at a position adjacent to the cover insertion hole 433. Therefore, when the screw 435 is fastened, it can be fastened to the protruding side of the lever-side connection part 422. By fastening of the screw 435, the hole cover 43 may be completely fixed to the lever 42, and flow or damage may be prevented when the lever 42 is operated. If necessary, the cover fastening hole 434 may be formed in the inner rim 437, and a screw 435 fastened from the side passes through the inner rim 437 and is fastened to the side of the lever protrusion 422a. You may.

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

12 is a perspective view of the driving device and the lifting device as viewed from the front of the connected state. And, Fig. 13 is a rear perspective view of the driving device. And, Figure 14 is a rear perspective view showing the internal structure of the driving device. And, Figure 15 is a partial enlarged view showing a structure in which power is transmitted to the screw of the driving device.

As shown, the motor assembly 60 may be located in the center portion in the left and 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.

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, a holder connector 562 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 562 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 562 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 562 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.

Hereinafter, the structure of the drawer part 32 will be described.

16 is a perspective view of the drawer. And, Figure 17 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, drawer openings 35 are formed at both ends of the lower front side of the drawer part 32.

The drawer opening 35 is positioned at a position facing the cover opening 315b and may be formed in a shape corresponding to the cover opening 315b. That is, so as not to interfere with rotation of the scissor side connector 842 having a shape protruding from the rotation axis of the lifting device 80 to one side, the drawer opening 35 has a radius of the scissor side connector 842 It can be formed equal to or larger in size. In addition, the drawer opening 35 may be formed to have a size that can be shielded by the hole cover 43.

The drawer opening 35 may include a drawer-side central portion 351 and a drawer-side radial portion 352. The drawer side central portion 351 forms both side ends of the drawer opening 35 and may be formed at a position corresponding to a rotation center of the scissor side connection portion 842. Accordingly, the drawer-side central portion 351 may be formed to have a size corresponding to a portion that becomes the rotational center of the scissor-side connecting portion 842. The drawer-side radius portion 352 is formed to have a size corresponding to the turning radius of the scissor-side connection portion 842, and may be formed to have a relatively larger size than the drawer-side central portion 351.

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.

18 is a perspective view of a lifting device according to an embodiment of the present invention. 19 is a view showing a state in which the upper frame of the lifting device is raised. And, Figure 20 is a partial enlarged view showing a state in which the hole cover and the lifting device are coupled to the lever of the present invention.

As shown, the elevating 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 in FIG. 21) and an upper shaft (841b in FIG. 23) extending in a horizontal direction.

The lower shaft (841a in FIG. 23) is rotatably supported by the lower frame 83, and the upper shaft (841b in FIG. 23) 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 in FIG. 23) and an upper shaft (841b in FIG. 23) extending in the vertical direction.

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 scissor frame 841 may include a scissor-side connecting portion 842 protruding to be connected to the lever 42. The scissor side connection part 842 is formed at an end of the extension part 842b extending from the first scissor frame 841 and the extension part 842b, and has a shape corresponding to the receiving space 422c. (842c) may be included.

The lever 42 may include a lever-side connecting portion 422 for receiving the scissor-side connecting portion 842 for coupling with the scissor-side connecting portion 842. The scissor side connection part 842 may be formed in a shape corresponding to the receiving space 422c of the lever side connection part 422. That is, the scissor-side connection portion 842 may be formed in a shape extending from a circular axis of rotation to one side, and may be formed in a shape corresponding to the rotation boss portion 422b and the lever-side protrusion 422a.

That is, the end of the scissor side connection portion 842 may be formed in a non-circular shape. Therefore, when the lever 42 is rotated while the scissor side connection part 842 is accommodated in the lever side connection part 422, the lever 42 is prevented from spinning with the scissors side connection part 842 Can be. In addition, the scissor-side connection portion 842 may transmit a greater force for the operation of the lifting device 80.

In the scissor side connection part 842, the extension part 842b and the coupling part 842c pass through the drawer opening 35, and the coupling part 842c is the receiving space 422c of the lever-side connection part 422. ) It is inserted into the inside so that the power of the driving device 40 can be transmitted to the lifting device 80. In this case, the hole cover 43 may be mounted on the lever-side connection part 422 to close the drawer opening 35.

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.

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

Referring to FIG. 21, the refrigerator 1 maintains a state in which both the rotating door 20 and the door 30 are closed in a food storage state. 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.

22 is a perspective view of the lower drawer door fully open. 23 is a cross-sectional view of the drawer door when the container of the lower drawer door is completely lowered. And, FIG. 24 is a perspective view showing states of the driving device and the lifting device in the state of FIG. 23. In addition, FIG. 25 is a view showing the relationship between the hole cover and the drawer opening in the state of FIG. 23.

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. 22, only to a position to avoid interference when the lifting device 80 is lifting 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.

Before the lifting device 80 is raised, the lever 42 and the screw holder are located in the lowest position. The lifting detection device 90 detects this and determines that the current state is a state in which the lifting device 80 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.

On the other hand, in this state, the ends of the screw holder 56 and the lever 42 are in the lowest state, and the state as shown in FIG. 25. That is, the hole cover 43 may shield the cover opening 315b and the drawer opening 35 in the lowest state in which the lifting device 80 is not raised. In particular, even if the user puts his or her hand inside the drawer part 32 for a food storage operation or a separation operation of the lifting device 80, the drawer opening 35 is completely shielded by the hole cover 43 It will be in a state of being in a state that can ensure safety.

26 is a cross-sectional view of the drawer door when the container of the lower drawer door is completely raised. And, Figure 27 is a perspective view showing the state of the driving device and the lifting device in the state of Figure 26. And, FIG. 28 is a view showing the relationship between the hole cover and the drawer opening in the state of FIG. 26.

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 841 is increased.

The scissor assembly 84 can be unfolded by increasing the height of the first rod 842a of the first scissor frame 841.

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 elevated and stops when it is raised to a sufficient height to facilitate access to the food or container 36 seated on the lifting device 80 as shown in FIG. 22. 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.

On the other hand, in this state, the ends of the screw holder 56 and the lever 42 are in the highest state, and the state as shown in FIG. 28. That is, the hole cover 43 may shield the cover opening 315b and the drawer opening 35 when the lifting device 80 is raised to its highest position. In particular, even in a state where the drawer opening 35 is exposed due to the elevation of the lifting device, the drawer opening 35 is completely shielded by the hole cover 43 to ensure safety.

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. 23. 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. 21 may be obtained.

On the other hand, even during the process of rotating the lever 42, the hole cover 43 always connects between the lever-side connection part 422 and the cover opening 315b, and the scissor-side connection part 842 and the drawer opening 35 Since the shielding state can be maintained, in any case, the user's body or foreign substances can be prevented from being caught, thereby ensuring stability and operational reliability.

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;
An elevating device provided inside the drawer and connected to the driving device to move a portion of the drawer up and down;
A drawer opening formed on the front surface of the drawer and opening at a position corresponding to the driving device to form a connection passage between the driving device and the lifting device; and
And a hole cover provided on one side corresponding to the drawer opening and shielding the drawer opening when the driving device and the lifting device are connected.
The method of claim 1,
The hole cover is a refrigerator, characterized in that provided between the rear surface of the door and the front of the drawer.
The method of claim 1,
The hole cover is a refrigerator, characterized in that formed larger than the size of the drawer opening.
The method of claim 1,
The driving device,
Motor assembly;
A screw unit including a screw that is disposed on both sides of the motor assembly and is connected to the motor assembly to operate at the same time, and includes a rotating screw and a screw holder vertically moved along the screw;
Includes; a lever coupled to the screw holder and rotated according to the movement of the screw holder, and connected to the lifting device to provide power for lifting the lifting device,
The hole cover is a refrigerator, characterized in that mounted on the lever.
The method of claim 4,
The lever has a lever-side connection portion protruding toward the drawer opening at a position corresponding to the rotation axis of the lever and coupled to the lifting device,
The hole cover is mounted on the lever-side connection portion and rotates together when the lever is rotated.
The method of claim 5,
The hole cover extends outwardly along the circumference of the lever-side connection part,
Refrigerator, characterized in that extending further outwardly from the drawer opening.
The method of claim 5,
A refrigerator, wherein a cover insertion hole through which the lever-side connection part is inserted is formed in the hole cover.
The method of claim 4,
A refrigerator, characterized in that the elevating device is provided with a scissor-side connection portion extending toward the drawer opening and detachably coupled to the lever-side connection portion.
The method of claim 8,
The lifting device,
A pair of scissor assemblies disposed on both left and right sides, the scissor side connection part being rotated around an axis to elevate;
And an upper frame coupled to an upper end of the scissor assembly and forming a bottom surface of the drawer to be elevated and lowered.
The method of claim 5,
And the lever-side connection portion forms a receiving space recessed in a shape corresponding to the scissor-side connection portion so that the scissors-side connection portion serving as a rotation axis of the lifting device is inserted.
The method of claim 10,
The lever side connection part,
A rotating boss part serving as a rotating shaft of the lever and the lifting device,
And a lever protruding portion extending along the lever from the rotation boss portion to assist the rotation of the lifting device.
The method of claim 11,
The drawer opening is a refrigerator, characterized in that formed larger than a radius of rotation of the lever protrusion.
The method of claim 11,
The hole cover,
A cover coupling portion formed along the rotation boss portion and coupled to the rotation boss portion,
It is formed along the lever protrusion, and includes a shielding portion to shield the drawer opening,
The refrigerator, characterized in that the width of the shielding portion is formed larger than that of the cover coupling portion.
The method of claim 4,
The hole cover is formed in a plate shape,
A refrigerator, wherein the hole cover has a shape corresponding to the lever-side connection part, and a cover insertion hole through which the lever-side connection part passes.
The method of claim 14,
The hole cover,
A cover coupling part surrounding the rotational axis of the lever,
And a shielding part extending from the rotating boss part and formed to have a width greater than a width of the drawer opening to shield the drawer opening.
The method of claim 15,
And a cover fastening hole through which a screw is fastened to the lever through the shielding part.
The method of claim 14,
And an inner rim extending along the circumference of the cover insertion hole and in contact with the circumferential surface of the lever-side connection portion.
The method of claim 17,
In the lever-side connection portion, a connection portion protrusion is formed to protrude,
An edge groove into which the connecting portion protrusion is inserted is formed in the inner edge,
When the hole cover is mounted, the connecting portion protrusion is inserted into the edge groove.
The method of claim 18,
The connecting portion protrusion and the rim groove extend in the same direction as the protruding direction of the lever-side connecting member.
The method of claim 17,
An outer rim protruding in the same direction as a protruding direction of the inner rim is formed on an outer circumference of the hole cover.

Images