KR100700776B1 - Refrigerating machine and door controlling apparatus and method of the same - Google Patents

Abstract

Refrigerator door control device according to the present invention is a basket that is accommodated in the article; A door to draw out the basket; A movable part for raising or lowering the basket; A door lock configured to fix the door in a completely drawn out state; And a control unit for controlling the operation of the movable unit.

According to the present invention, articles accommodated in the refrigerator can be handled more conveniently and safely. In addition, the door of the refrigerator operated in a slide manner is safely operated and controlled, so that the user may use it conveniently.

In addition, since the door and the basket do not collide with parts of other refrigerators when the door is opened or closed or the basket is lifted or lowered, there is an advantage that the basket can be safely used without problems such as falling out of the basket.

Refrigerator, door, basket, control

Description

Refrigerating machine and door controlling apparatus and method of the same}

1 is a perspective view of a refrigerator according to the spirit of the present invention;

2 is a cross-sectional view of II ′ of FIG. 1.

3 is a view showing a state in which the basket of the refrigerator according to the present invention is raised.

4 is a rear perspective view of the door according to the present invention;

5 is a rear view of the door according to the present invention;

6 is a block diagram of a door control apparatus of a refrigerator according to the present invention;

7 is a block diagram of a door control method of a refrigerator according to the present invention;

<Explanation of symbols for the main parts of the drawings>

1: refrigerator 2: main body 7: operation switch

13 solenoid 14 door open detection sensor 15 drawer open detection sensor

33: charger 40: movable portion 47: rotary arm

49, 50: stopper 55: basket support 56: arm movable end

62: basket

The present invention relates to a refrigerator, and more particularly, to a bottom freezer type refrigerator in which a freezer compartment is provided at a lower side of the refrigerator. More particularly, the present invention relates to a refrigerator and a door control apparatus and method for a refrigerator in which a basket mounted in a freezer compartment at a lower side of the refrigerator is lifted up and down.

Refrigerators are classified into various types according to types of compartments of the freezer compartment and the refrigerator compartment. For example, a freezer compartment includes a top mount refrigerator with a freezer compartment on the upper side, a double door refrigerator with a freezer compartment and a refrigerator compartment on the left and a bottom freezer type refrigerator with a freezer compartment on the lower side and a relatively large refrigerator compartment on the upper side. It is.

In addition, the present invention has a major interest in a bottom freezer type refrigerator, but the scope of the present invention is not limited to the bottom freezer type refrigerator.

The bottom freezer-type refrigerator is a refrigerator in which a freezer compartment is disposed at a lower side and a refrigerator compartment is disposed at an upper side thereof, and a door of the refrigerator compartment generally takes the same form as a general refrigerator operated by a hinge. However, in the case of the freezer compartment, since the door is provided relatively small on the lower side of the refrigerator, it is common to take the form of being taken out of the refrigerator in a sliding manner.

Since the freezer is taken out of the refrigerator in such a way that the freezer is slid, many attempts have been made to allow the user to conveniently handle foods placed inside the freezer.

The present invention is proposed under the above-described background, and an object of the present invention is to propose a refrigerator and a door control apparatus and a method for more conveniently handling an article housed inside a refrigerator.

In addition, an object of the present invention is to propose a refrigerator and a door control apparatus and method of the refrigerator which can be conveniently used by a user by allowing the door of the refrigerator operated in a slide manner to be safely operated and controlled.

In addition, an object of the present invention is to propose a refrigerator and a door control apparatus and method of the refrigerator in which the door is operated safely without colliding with other items when the door of the refrigerator is opened or closed.

In addition, it is an object of the present invention to propose a refrigerator and a door control device and method of the refrigerator to facilitate the handling of the refrigerator door to alert the user whether the normal operation of the door.

Refrigerator door control apparatus according to the present invention for achieving the above object is a basket in which an article is accommodated; A door to draw out the basket; A movable part for raising or lowering the basket; A door lock configured to fix the door in a completely drawn out state; And a control unit for controlling the operation of the movable unit.

According to another aspect of the present invention, a refrigerator includes a refrigerator body having a plurality of storage spaces; A door for opening and closing the storage space; A basket support part provided inside the door to move up and down; A door opening detecting unit detecting the opening of the door; It includes; door lock for fixing the position of the door in the state that the door is fully open.

Door control method of the refrigerator according to another aspect of the present invention comprises the steps of opening the door by the user's physical force or operation of the operation unit; The door is fully open and fixed; Moving the basket relative to the door by manipulating the up or down button; And generating an alarm signal when the door and / or the basket moves.

According to the present invention as proposed, opening and closing the door of the refrigerator can be safely performed. Furthermore, the operation of opening and closing the door and the lifting and lowering of the basket are linked to each other, thereby increasing the safety and reliability of the opening and closing of the refrigerator door.

Hereinafter, with reference to the drawings will be described in detail a specific embodiment of the present invention. However, the spirit of the present invention is not limited to the accompanying embodiments, and those skilled in the art who understand the spirit of the present invention can easily add, change, delete, and add other embodiments included in the scope of the same idea. Will be able to offer.

1 is a perspective view of a refrigerator according to the spirit of the present invention, and FIG. 2 is a cross-sectional view taken along line II ′ of FIG. 1.

1 and 2, the refrigerator 1 according to the present invention is a bottom freezer type refrigerator, in which a freezer compartment is formed at a lower side of the refrigerator, and the door of the freezer compartment is operated in the front-rear direction in a sliding manner.

Referring to the configuration of the refrigerator 1, the main body 2 of the refrigerator and the first door 5 which is provided on the upper side of the main body 2 so as to open or close the inner space in a rotational manner by a hinge. And a second door 6 which is provided at approximately the lower side of the main body 2 so that the inner space can be opened or closed in a sliding manner.

In addition, an operation switch 7 is provided on the front surface of the second door 6 to control the operation state of the second door 6 by the user. Various operations relating to the operation of the second door 6 can be performed by the operation switch 7. In addition, the inside of the second door 6, a basket 62 for receiving articles is placed on the basket support portion 55, and the basket 62 is moved up and down by the basket support portion 55. Move up and down. Of course, in the state in which the basket 62 is raised upward, an object stored in the basket 62 is easily taken out, and the operation of opening and closing the second door 6 in the state in which the basket 62 is lowered. This can be done.

In order for the operation of the second door 6 as described to be performed reliably, the refrigerator main body 2 and the second door 6 are connected back and forth so that the second door 6 slides forward and backward. And a movable part 40 for providing a force for raising and lowering the front and rear moving part 10, the basket support part 55 in an up and down direction from the inner surface of the second door 6, and the basket support part 55 being the second. Up and down moving unit 20 to move in the vertical direction with respect to the door 6, and the power supply unit 30 to control the power applied to the movable part 40 side is included.

Although not mentioned in detail, the first storage space 3 formed in the first door 5 and the second storage space 4 formed in the second door 6 are partitioned. The partition wall 61 and the drawer 8 provided in the lower part of the partition wall 61 are further formed. The drawer 8 is a space in which food is stored, and may function as a thermostat in which an article which is preferably kept at a constant temperature is accommodated.

In addition, a drawer opening detection sensor 15 is attached to the bottom surface of the partition wall 61 to detect that the drawer 8 is opened. The drawer open detection sensor 15 is provided in the form of a contact sensor or an optical sensor to detect the open state of the drawer when the drawer 8 is opened. When it is detected that the drawer 8 is in the open state by the drawer open detection sensor 15, the lifting operation of the basket 62 may not be performed so that the lifting and lowering of the basket 62 may be performed more safely. .

With reference to each structure mentioned above, the operation | movement concerning the said 2nd door 6 is demonstrated easily.

First, when the second door 6 exits to the outside, the movement of the second door 6 may be accurately guided by the front and rear moving part 10. Then, after the second door 6 is pulled out over a predetermined distance, the movable part 40 is operated to push the basket support part 55 upward. Here, the operation of the basket support unit 55 may be safely guided by the up and down moving unit 20.

In addition, in order for the movable part 40 to be properly operated, power must be supplied to the movable part 40, and the power supplied to the movable part 40 may be controlled by the power supply part 30.

Each structure mentioned above is demonstrated in detail.

The front and rear moving parts 10 include a first horizontal rail 11 and a second horizontal rail 12. In detail, the first horizontal rail 11 is fixed to the second door 6 side, and the second horizontal rail is fixed to the main body 2 side. In addition, the rails 11 and 12 are connected to each other by a connecting structure such as a roller so as to be mutually slidable, so that when the second door 6 is opened, the first horizontal rails 11 2 It slides with respect to the horizontal rail 12 so that it may extend.

In addition, the solenoid 13 is provided at an overlapping position of the first horizontal rail 11 and the second horizontal rail 12 in a state in which the second door 6 is completely opened. Projections selectively extending from the solenoid 13 pass through the first and second horizontal rails 11 and 12 so that the extension positions of the horizontal rails 11 and 12 are fixed. As another case, when the solenoid 13 is formed substantially in front of the second horizontal rail 12 so that the first horizontal rail 11 is extended, the protrusion of the solenoid 13 is projected to the first horizontal rail 11. It is also possible to extend to the rear end of the configuration so that the position of the first horizontal rail 11 is fixed.

In addition, a door opening sensor 14 is installed at approximately the front of the second horizontal rail 11, so that the second door 6 is completely opened so that the first horizontal rail 11 and the second horizontal rail 12 are opened. When the state of overlap is solved, the door is opened.

The vertical movement part 20 is a part for guiding the basket support part 55 when the basket support part 55 moves in the vertical direction. The vertical rail 21 is fixed to the inner side of the second door 6 in the vertical direction. A groove 22 is formed in the vertical rail 21. The protrusion 22 extending from one side of the basket support part 55 is inserted into the groove 22 so that the basket support part 55 is supported by the vertical rail 21 when the basket support part 55 is operated in the vertical direction. To ensure that the elevating of the can be accurately guided.

The movable part 40 is a structure for lifting and lowering the basket support part 55, and an arm support end 57 fixed to an inner side surface of the second door 6 and a hinge to the arm support end 57. A rotary arm 47 coupled to and extending inwardly of the refrigerator, an arm movable end 56 provided at the other end of the rotary arm 47, and rotated about the arm movable end 56; A roller 48 whose outer circumferential surface is in contact with the bottom surface of the basket support part 55 is included.

In addition, the movable part 40 is further provided with a plurality of parts such as a motor (see 41 in FIG. 4) and the like in order to rotate the rotary arm 47, which will be described later.

The power supply unit 30 has a power supply terminal 32 formed on the main body 2 side, and a charging terminal 31 formed on the inner side of the second door 6 corresponding to the power supply terminal 32. And a charger 33 connected to an electric wire extending from the charging terminal 31 and formed in the second door 6. Then, the charger is connected to the motor 41 so that power is supplied to the motor 41 side.

With reference to the above configuration, the lifting operation of the basket 62 will be described in detail.

First, the door is opened by a method such as an external force by a user or driving of a motor. When the door 6 is fully opened, the expansion of the horizontal rails 11 and 12 is detected by the door opening sensor 14, and then the solenoid 13 is operated to horizontal rails 11 and 12. Make sure the current position of is fixed. When the current position is fixed so that the horizontal rails 11 and 12 are not contracted, the door 6 is not closed by an external force.

By this operation, when the user operates the operation switch 7 after the second door 6 is opened, power is applied from the charger 33 to the motor 41.

Here, the charger 33 is supplied with the power charged in the charger by the connection of the power supply terminal 32 and the charging terminal 31 in a state in which the second door 6 is closed.

When the motor 41 is driven, the rotary arm 47 causes the arm movable end 56 to rotate with the arm support end 57 as a support point. The roller 48 is rotated by the operation of the arm movable end 56 is rotated upward, the roller 48 is to raise the basket support portion 55 upwards, the basket support portion 55 is upward When pushed up, the basket 62 is also moved upward. When the basket 62 is moving, a predetermined alarm signal may be generated, so that the state in which the basket 62 is moving may be known to the user.

2 illustrates a state in which the basket 55 is lowered, and FIG. 3 illustrates a state in which the basket 55 is raised. Referring to these drawings, the rotary arm 47 and the basket support part ( 55 will be understood correctly.

In addition, the power supply unit 30 is provided with a charger 33. Since the charger 33 is provided, when the second door 6 is closed, the power supply terminal 32 and the charging terminal 31 are connected to each other and are supplied from the refrigerator 1. Power is charged by the charger 33. When the second door 6 is opened and the connection between the power supply terminal 32 and the charging terminal 31 is broken, the motor 41 is operated correctly by the power previously charged in the charger. .

Therefore, a separate external power supply to the motor 41 does not always need to be connected, and there is no need for a separate line connecting the main body 2 and the second door 6 by wire, so that the appearance is clean and easy to use. There is an advantage of convenience.

Figure 4 is a rear perspective view of the door according to the invention, Figure 5 is a rear view of the door according to the invention.

4 and 5, the operation associated with the lifting of the basket in the refrigerator according to the present invention will be described in detail.

The movable part 40 is coupled to a motor 41 fixed to an inner surface of the second door 6, a motor shaft 42 of the motor 41, and an end of the motor shaft 42. A movable gear 43, a driven gear 44 meshing with the movable gear 43, an arm shaft 46 coupled to a central portion of the driven gear 44, and an end of the arm shaft 46; Rotating arm 47 is fixed at one end.

In addition, the movable gear 43 and the driven gear 44 are supported by the supporter 45, and the supporter 45 is fixed to the inner side surface of the second door 6.

The rotary arms 47 are also provided in pairs, each of which is coupled to an end of the arm shaft 46. As the rotary arm 47 is provided as a pair as described above, the bracket support portion 55 can be supported at both ends, and the basket support portion 55 can be stably moved in the vertical direction.

In addition, the outer surface of the supporter 45 is formed with a stopper 49, 50 protruding from two parts, the arm stopper 49, 50 is in contact with the extension of the rotary arm 47 The rotating arm 47 does not rotate more than a certain angle. By the rotary arm 47 it is possible to obtain the advantage that the operational reliability of the rotary arm 47 is improved. For example, when the control of the motor 41 is incorrect and the rotary arm 47 is rotated beyond the limit capable of supporting the basket support 55, the first arm stopper 49 and the second arm stopper 50 are rotated. ) So that it can't be rotated anymore.

In addition, a stopper capable of performing the same function as the arm stoppers 49 and 50 may also be provided on the vertical rail 21. Specifically, an upper stopper 51 provided at the upper end of the vertical rail 21 and a lower stopper 52 provided at the lower end of the vertical rail 21 are used. Since the limit at which the basket support part 55 can be moved by the upper stopper 51 and the lower stopper 52 can be accurately set, the stability of the basket driving device can be further improved. .

On the other hand, a predetermined sensing structure is further provided to accurately detect the movement of the basket support 55. Specifically, the rising detection sensor 53 provided at the upper end of the vertical rail 21, and the falling detection sensor 54 provided at the lower end of the vertical rail 21 are it. The rising sensor 53 and the falling detection sensor 54 may be a contact sensor and an optical sensor, and when the basket support 55 is raised or lowered to a predetermined level by such a sensor, it is input to the motor 41. Can be turned off.

In addition, before the full rise and fall of the basket 62 is detected by the rise detection sensor 53 and the fall detection sensor 54, a predetermined alarm is generated, whereby the basket 62 is in the state of being raised. It can also be made known to the user.

With reference to the detailed configuration described above the operation of the door control device of the refrigerator according to the present invention will be described briefly.

First, in a state where the door is closed, the power supply terminal 32 and the charging terminal 31 are connected to each other to charge the charger 33.

After that, when the door is opened, the solenoid 13 is operated after the door is completely opened by the door open detection sensor 14, so that the open position of the open door 6 is fixed. The door opened by the solenoid 13 is fixed as described above.

Subsequently, when the user operates the operation switch 7 to cause the basket 62 to rise, power from the charger 33 is supplied to the motor 41 to rotate the motor 41. When the motor 41 is rotated, the driving force is transmitted to the motor shaft 42, the movable gear 43, the driven gear 44, the arm shaft 46, and the rotary arm 47.

When the rotary arm 47 is rotated, the arm movable end 56 of the rotary arm 47 is raised, and the roller 48 installed at the arm movable end 56 is disposed on the bottom surface of the basket support 55. By being rotated in contact, the basket support 55 is smoothly moved upward.

After the basket support part 55 is completely moved upward, the basket support part 55 is sensed by the lift sensor 53, and the power supplied to the motor 41 is cut off. When the driving of the motor 41 is cut off, the operation of the rotary arm 47 is stopped to stop the movement of the basket support 55.

In addition, a predetermined alarm is generated in the form of sound during the operation of raising the basket 62 so that the user who listens to the alarm does not put his hand in the basket 62 so that the user is not injured. Furthermore, in the state in which the drawer 8 is opened by the drawer open detection sensor 15, the basket 62 is not lifted so that the basket 62 and the drawer 8 do not collide with each other.

On the other hand, even when the basket support 55 is not detected by the lift sensor 53, the rotation arm 47 is physically rotated by the upper stopper 51 and / or the first arm stopper 49. In this case, the rotary arm 47 and the basket support 55 cannot be moved beyond the limit in which they can be moved. Therefore, it can be expected that the operational reliability of the movable portion 40 is improved.

The operation of lowering the basket support 55 may likewise be performed of the operation of raising the basket support 55, except that the difference occurs only when the motor 41 is rotated in the reverse direction.

Hereinafter, the operation of the door control apparatus of the refrigerator according to the present invention will be described in detail with reference to a block diagram.

6 is a block diagram of a door control apparatus of a refrigerator according to the present invention.

Referring to Figure 6, the refrigerator door control apparatus according to the present invention, the control unit 80 for controlling the movement of the door, the shelf opening detection unit for detecting the opening of the drawer by the control unit 80 to transmit a predetermined signal ( 81), the door open detection unit 82 detects the open state of the door 2 is delivered to the control unit 80, and the basket lift detection to detect whether the basket 62 is fully elevated, and transmits to the control unit Part 83 is included.

The control unit 80 may have a form of a microprocessor of any type embedded in a refrigerator, and the shelf opening detecting unit 81 may be a drawer opening detecting sensor 15 that detects the opening or closing of the drawer 8. The door opening detecting unit 82 corresponds to the door opening detecting sensor 14 and the charger 33 provided at the overlapping portions of the horizontal rails 11 and 12, and the basket lifting detecting unit 83. The rise sensor 53 and the fall detection sensor 54 provided at the upper and lower ends of the vertical rail 21 may correspond to each other.

In addition, as a configuration for transmitting the operation signal by the user's operation to the control unit 80, the rising button 84 for transmitting the operation signal for the basket 62 is raised to the control unit, and the basket 62 is lowered The down button 85 for transmitting the operation signal to the control unit, the stop button 87 for stopping the lifting operation of the basket 62, and the basket 62 in motion are quickly returned to the original position. A reset button 86 is included.

The buttons 84, 85, 87, 86 may be provided in the form of an operation switch 7 provided on the outer surface of the door 6.

In addition, as a configuration that is operated by the control signal of the control unit 80, the door locking unit 88 for locking the door so that the door is not closed once and the door is being opened or the basket 62 is moving and When the operating state of the same refrigerator is being changed, the sound warning unit 89 for making the operating state of the refrigerator known to the user with a predetermined alarm signal, and the basket 62 as in the case where the basket 62 is being raised or lowered A movable unit 90 for lifting and lowering is included.

The door locking unit 88 may correspond to a solenoid 14 formed at a portion where the horizontal rails 11 and 12 overlap, and the sound warning unit 89 may be installed at any position of the refrigerator. It may be provided in the form of a speaker. The movable part 90 may include any motor 41 and a rotating arm 47 formed on the rear surface of the door 6 to lift and lower the basket 62.

With reference to the configuration of the door control apparatus of the refrigerator according to the present invention shown in Figure 6 will be described in detail with reference to the door control method of the refrigerator according to the present invention shown in FIG.

Referring to FIG. 7, the operation of opening the door 6 is started (S1). If the up button 84 of the basket is pressed while the door is opened (S2), since the basket 62 and another part of the refrigerator may collide, the basket 62 is not raised. The opening detection of the door 6 may be detected by the door opening detecting unit 82 (S3), and the lift button 84 may be detected when the door is completely opened by the door opening detecting unit 82. Ascending operation of the basket 62 is performed.

In addition, when the opening operation of the door 6 is performed, an alarm sound is output by the sound warning unit 89, so that the user may be informed that the door is not completely opened. When the opening operation is started to be performed while the door 6 is closed, the connection between the power supply terminal 32 and the charging terminal 31 is released and the charging operation of the charger 33 is released to change the voltage. Can be detected by the occurrence.

Subsequently, in the state where the door is completely opened and the basket's up button is operated, the door is locked by the door locking portion 88, the operation of the movable portion 90 is started, and the alarm sound by the sound warning portion 89 Is generated (S4). However, the operation of the door locking unit 88 is preferably performed after the door is completely opened by the door opening detecting unit 82.

The alarm sound is generated by the acoustic warning unit 89 to prevent the basket 62 from being raised so as to inform the user of unsafe loading and unloading. The alarm sound generated during the lifting operation of the basket 62 may be differentiated from the alarm sound generated when the door 6 is opened. Specifically, a message during door opening or basket transfer may be known as a voice. There will be.

After the basket 62 is sensed to be fully lifted by the basket lift detection unit 83, the operation of the sound warning unit 89 and the movable unit 90 is stopped (S6). This state may be understood as the operation by which the user inserts or removes the article into or out of the basket 62.

Thereafter, when the down button 85 of the basket is input (S8), the movable part 90 is operated in the downward direction of the basket 62, and an alarm sound corresponding to the movement of the basket 62 is the sound warning part 89. To be generated (S9). The operation of the movable unit 90 and the acoustic warning unit 89 continues until the basket 62 is completely reached by the basket lift detection unit 83. After it is determined that the basket is completely lowered by the basket lift detecting unit 83 (S10), the door locking operation by the door locking unit 88 is released, and the warning sound by the acoustic warning unit 89 is released. It is to be switched to the warning sound corresponding to the open state (S11).

Thereafter, when the user performs the operation of closing the door 6 (S12), and the door is detected as completely closed by the door open detection unit 82 (S13), the door is opened to the user by stopping the generation of the alarm sound. Inform that it is completely closed.

As described above, the state of opening of the door is accurately known to the user, so that the user moves to a seat without closing the door, and thus, the cold air in the refrigerator can be prevented from being lost while the user does not recognize the door.

In addition, when the basket is moving, there is an advantage that the user's safety is reconsidered so that the user does not put or remove items into the basket.

In addition, when there is an obstacle in the transfer of the basket, such as before the door is completely opened or when the drawer 8 is opened, the basket can be operated more normally by not performing the transfer operation of the basket.

In addition, when the door is opened by the slide is completely opened in the fully open state, it is firmly fixed in the open position, preventing the door from closing or moving even by external shocks, etc. You can expect

On the other hand, the door control apparatus of the refrigerator according to the present invention is provided with a reset button 86, if the reset button 86 is not normally operated during the lifting operation of the basket, the basket 62 is urgently returned to the original position By returning, the return operation can be performed in a hurry when the user's hem gets caught while the basket 62 is in use. And, the stop button 87 can be used when the basket 62 is to be stopped when the basket 62 needs to be stopped while the basket 62 is being raised or lowered, even if the basket has to be returned to its original position. have.

In addition, the stop button 87 and the reset button 86 may be automatically performed by detecting the overload condition when an overload occurs in the motor 41.

 According to the present invention, articles accommodated in the refrigerator can be handled more conveniently and safely. In addition, the door of the refrigerator operated in a slide manner is safely operated and controlled, so that the user can conveniently use it.

In addition, since the door and the basket do not collide with parts of other refrigerators when the door is opened or closed or the basket is lifted or lowered, there is an advantage that the basket can be safely used without problems such as falling out of the basket.

In addition, there is an advantage that the handling of the refrigerator door is convenient so that the normal operation of the door and the basket is known to the user.

Claims (30)

A basket in which the article is received; A door having a moving rail to draw in and out of the basket; A movable part for raising or lowering the basket; A door locking part which fixes the door in a state in which the door is completely drawn out and is provided at one side of the moving rail; And a control unit for controlling the operation of the movable unit. The method of claim 1, The door control device of the refrigerator, which is lifted by the movable part and further includes a basket support part on which the basket is seated. delete The method of claim 1, The door lock unit is a door control device of the refrigerator, characterized in that using a solenoid lock device. The method of claim 1, The door control device of the refrigerator further comprises a sensing unit for sensing the upper limit position of the basket. The method of claim 1, The door control device of the refrigerator further comprises a detection unit for detecting the lower limit position of the basket. The method of claim 1, The door control device of the refrigerator further comprises a stop button for allowing the basket to pause. The method of claim 1, The door control device of the refrigerator further comprises a reset button for returning the basket to its original position. The method of claim 1, The door control device of the refrigerator further includes a sound warning unit for notifying the withdrawal status of the door. The method of claim 1, The door control device of the refrigerator further comprises a button unit for inputting the rising command of the basket. The method of claim 1, The door control device of the refrigerator further comprises a button unit for inputting the descending command of the basket. The method of claim 1, The door control device of the refrigerator further includes a charging unit provided on one side of the door and charged in a closed state of the door and discharged when the door is opened to apply power to the movable unit. A refrigerator body having a plurality of storage spaces; A door that opens and closes the storage space and has a guide rail to draw in and out of the basket; A basket support part provided inside the door to move up and down; A door opening detecting unit detecting the opening of the door; And a door locking unit configured to fix the door after the door opening detecting unit recognizes a completely open state of the door. The method of claim 13, A charging unit provided at one side of the door and charged when the door is closed; The refrigerator further comprises a movable part for supplying power discharged from the charging unit when the door is opened to drive the basket support. delete delete The method of claim 13, A drawer device provided at one side of the refrigerator body; The refrigerator further comprises a drawer opening detecting unit for detecting the open state of the drawer. delete The method of claim 13, And the basket support part is movable after the door is completely opened and the door is fixed by the door lock part. The method of claim 13, And a manipulation unit provided with an input device for inputting a command for raising and lowering the basket support, a command for pausing the basket support, or a command for returning to the home position of the basket support. delete The method of claim 13, And a warning device for notifying at least one of an open state of the door and a moving state of the basket support. delete Opening the door by a user's physical force or an operation unit; The door is fully open and fixed; Moving the basket relative to the door by manipulating the up or down button;  And generating an alarm signal when the at least one of the door and the basket moves. delete delete delete The method of claim 24, Determining whether the basket is completely lowered when a user tries to close the door; The control method of the refrigerator door further comprises the step of generating a warning signal when it is determined that the basket is not completely lowered. The method of claim 24, The moving of the basket may include detecting whether a command by a pause button or a reset button is input; The control method of the refrigerator door further comprises the step of stopping or descending the basket in accordance with the input command is determined that the command is input. The method of claim 24, The moving of the basket may include determining whether a limit position has been detected by an upper limit position detector or a lower limit position detector of the basket; The control method of the refrigerator door further comprises the step of stopping the movement if it is determined that the limit position has been reached.

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