KR101436640B1 - Refrigerator - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drawer draw-in mouth structure of a refrigerator.

According to the storage box draw-out opening structure of the refrigerator according to the embodiment of the present invention, since the storage box is automatically drawn or drawn only by the user pressing the storage box input button, the convenience for use for a child or the elderly is increased. Further, since the storage box can be automatically drawn out, there is an advantage that the storage box can be drawn out conveniently regardless of the weight of the food stored in the storage box.

Storage box, drawer

Description

Refrigerator {Refrigerator}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drawer draw-in mouth structure of a refrigerator.

Generally, a refrigerator is a household appliance that stores food in a refrigerated or frozen state.

In detail, the refrigerator is divided into a top mount type, a bottom freezer type, and a side by side type depending on the positions of the freezer compartment and the refrigerating compartment.

Wherein the door for opening and closing the freezing compartment is rotatably provided at one side edge of the refrigerator body and the door for opening and closing the freezing compartment is provided with a storage box type .

Meanwhile, since the freezer compartment is provided on the lower side of the refrigerator, in order to open the freezer compartment, the user has to pull the door forward with the waist bent. Therefore, since the user has to apply a greater force than when the user pulls the door in the straight posture, the refrigerator door is inconvenient compared to opening the refrigerator compartment door.

In order to solve this inconvenience, a structure for facilitating the opening of the freezing compartment door has appeared.

As an example, an automatic opening structure has been proposed in which the user senses the pulling and pulling action of the door handle to open the freezing chamber door so that the freezing chamber door is separated from the front of the main body by a predetermined distance.

As another method, a structure has been proposed in which a motor is fixedly mounted on the floor of the freezer compartment and the freezer compartment door is drawn out by the driving force of the motor. More specifically, a motor is fixedly mounted on the floor of the freezer compartment, and a rotating member such as a gear is connected to the rotating shaft of the motor. The bottom of the freezer compartment drawer is brought into contact with the rotary member, and the freezer compartment drawer is moved forward and backward in accordance with the rotation of the rotary member.

However, the conventional storage box type refrigerator has the following disadvantages.

First, in the case of a conventional refrigerator without a storage box automatic drawing-out structure, a user must grasp a handle protruding from the front of the storage box and pull it with a force. However, a sealing member such as a gasket is mounted on the back surface of the refrigerator storage box to prevent outflow of cold air, and a sealing member such as a magnet is provided inside the sealing member. Therefore, when the storage box is closed, the refrigerator body is maintained in a state of being closely attached to the refrigerator body by the magnetic force. In this state, in order for the user to pull out the storage box, a force larger than the magnetic force is applied to pull the storage box. In addition, when the storage box is provided on the lower side of the refrigerator, the waist should be pulled out in a bent state, so that the body may be overloaded. In other words, there may be a problem that a child, an elderly person, and a woman are somewhat hard to open a refrigerator storage box.

Further, since the handle for pulling the storage box protrudes from the front surface of the storage box, the volume of the packaging material of the refrigerator becomes large. In addition, when the refrigerator is installed in a room, there is a disadvantage that the space utilization is low because the space required for the protrusion of the handle is required.

Furthermore, since the handle is protruded from the front surface of the refrigerator, there is a risk that the user may bump in the process of moving or hit the child in the course of running.

Meanwhile, as described above, also in the case of a refrigerator provided with a storage box separating device which pushes the storage box by a distance enough to separate the storage box from the refrigerator body, there is also the following disadvantage.

First, even in the case of a refrigerator equipped with a device for separating the storage box from the main body, a handle is necessarily required. That is, when the user tries to pull the storage box by holding the handle, the storage box is automatically detached from the main body by sensing the handle, so that the handle is an essential component, exist.

This is because the time taken to drive the storage box separating apparatus by sensing the control by the control unit is shorter than the time taken for the user to grasp and pull the handle, resulting in an inefficiency. That is, the reaction speed of the storage box separating device in accordance with the storage box withdrawing operation is slow, so that the user does not substantially recognize the convenience.

Third, since the storage box separating device pushes the storage box only to the extent that the storage box is separated from the refrigerator body, there is a disadvantage that the user must pull the handle directly after that. In this case, when the weight of the food stored in the storage box is large, withdrawal of the storage box is not easy.

Also, in the case of a refrigerator having a structure in which a motor is fixedly mounted on a bottom surface of a refrigerator main body to draw out a storage box, the following problem also arises.

First, in order to apply the above structure to the refrigerator, the driving motor and the gear assembly must be mounted on the floor of the refrigerator compartment or the freezer compartment.

Secondly, even if the driving motor and the gear assembly are mounted downward from the inner case of the refrigerator, there is a problem that the heat insulation loss of the refrigerator body may be caused. In other words, the refrigerator main body is composed of an outer case, an inner case, and a heat insulating layer provided therebetween. Under such a structure, when the inner case is recessed for mounting the motor, there is a problem that the heat insulating layer is thinned so that the heat insulating effect between the inside of the refrigerator and the inside of the refrigerator is deteriorated.

Third, when the motor and the gear assembly are fixedly mounted on the floor of the refrigerator, the rack engaged with the gear should be installed on the bottom surface of the storage box in the longitudinal direction. At this time, the maximum length of the rack may be up to the full length of the bottom surface of the storage box. A machine room in which a compressor and a condenser are accommodated is provided at a lower rear end of the refrigerator. Therefore, the rear surface of the freezer compartment of the bottom freezer-type refrigerator is inclined forward. That is, the length of the lower end electrical length is shorter than the length of the upper end electrical length of the freezer compartment box.

If the storage box draw-out structure is provided in the freezer compartment storage box of the bottom freezer-type refrigerator, the rack should be provided on the bottom surface of the freezer compartment storage box. In this case, even when the freezing chamber storage box is drawn out to the maximum, the upper rear end portion of the freezing chamber storage box can not be completely drawn out from the freezing chamber.

Fourthly, in the case where a plurality of storage boxes of the refrigerator are provided in the vertical direction, a separate motor and gear assembly for pulling out the upper storage box must be provided. To this end, a separate barrier should be provided in the upper storage box and the lower storage box .

Fifth, in the case of a conventional refrigerator having a structure in which a motor is fixedly mounted on a bottom surface of a refrigerator main body to draw out a storage box, a function of sensing and controlling the drawing speed of the storage box during the drawing- It does not. In other words, in the case of a conventional refrigerator, a lead switch is attached to the front and rear ends of the rack provided on the bottom surface of the refrigerator, and only detects whether or not the storage box is completely drawn to the end and whether or not it is completely closed. Accordingly, there is a disadvantage in that it can not be detected whether or not the storage box is drawn out at a normal speed, whether or not the draw-out operation of the storage box is obstructed by the obstacle, and whether it is drawn at a set speed regardless of the weight of the food stored in the storage box .

Sixth, in the case of a structure in which a motor is fixedly mounted on the bottom surface of the refrigerator main body, the lead wire for transmitting electric current and electrical signals to the driving motor must be extended.

Disclosure of Invention Technical Problem [8] The present invention has been proposed in order to solve the above-mentioned disadvantages and problems, and it is an object of the present invention to provide a refrigerator in which a handle structure for withdrawing a storage box in a storage box type refrigerator is not required.

It is also an object of the present invention to provide a refrigerator which can improve the storage box draw-in / out structure of a refrigerator and automatically draw out a storage box according to a user's intention.

Another object of the present invention is to provide a refrigerator which can reduce the internal volume of the refrigerator and reduce the adiabatic effect by improving the conventional structure in which the driving unit for inserting and extracting the storage box of the refrigerator is fixedly mounted on the refrigerator body.

Another object of the present invention is to provide a refrigerator which can be pulled out or drawn in at a predetermined speed regardless of the weight of the food stored in the storage box.

Another object of the present invention is to provide a refrigerator which is wirelessly connected to a drive motor for allowing the storage box to be drawn in and out, and which does not require a lead wire for power supply and signal transmission / reception.

According to another aspect of the present invention, there is provided a refrigerator including: a main body having a storage space for storing food; An evaporator provided at one side of the main body to generate cool air; A drawer which is drawably provided in the storage space and in which foods are stored; A drive motor for supplying rotational force to move the drawer; A control unit for controlling movement of the drawer; And at least a part of the power supply means connected to the drive motor to supply electric power.

According to another aspect of the present invention, there is provided a refrigerator comprising: a main body including a refrigerating chamber maintained at a temperature higher than a freezing temperature and a freezing chamber maintained at a temperature lower than a freezing temperature; An evaporator provided in the main body so as to generate cold air; A compressor for compressing the refrigerant passing through the evaporator; A condenser for condensing the refrigerant having passed through the compressor; An expansion member for expanding the refrigerant passing through the condenser to a low temperature and a low pressure; A drawer provided so as to be drawable to the refrigerator compartment or the freezer compartment; A drive motor integrally connected to the drawer; An input button for inputting a move command of the drawer; And signal transmission means provided to allow a driving command inputted from the input button to be transmitted to the driving motor.

In yet another aspect, a refrigerator according to an embodiment of the present invention includes a main body; A drawer provided to be drawable inside the main body; A drive motor moving together with the drawer; A control unit for controlling an operation of the driving motor; Wireless power supply means for supplying power to the drive motor, and wireless transmission / reception means for allowing an operation signal transmitted from the control portion to be transmitted to the drive motor.

According to the storage box draw-in / out structure of the refrigerator according to the embodiment of the present invention, the following advantages and effects can be obtained.

First, since the storage box is automatically drawn or drawn only by the user pressing the storage box input button, the convenience for use for a child or the elderly is increased. Further, since the storage box can be automatically drawn out, there is an advantage that the storage box can be drawn out conveniently regardless of the weight of the food stored in the storage box.

Second, there is an advantage that a separate handle is not required to draw out the storage box of the refrigerator. In detail, there is no need for a handle for taking out the storage box, so that the appearance of the refrigerator can be cleaned neatly. In addition, since the handle does not protrude from the refrigerator body, the space utilization of the refrigerator installation place is increased and the risk of a safety accident is reduced.

Third, since the driving motor for automatic withdrawal of the storage box is not fixedly mounted on the main body of the refrigerator but is provided so as to be movable together with the storage box, there is an advantage that the disadvantage that the capacity is reduced is eliminated.

Fourth, since the driving motor for automatic withdrawal of the storage box is not fixedly mounted on the refrigerator body but is provided movably together with the storage box, there is an advantage that the disadvantage that the heat insulating effect is reduced due to the reduction of the thickness of the heat insulating layer of the refrigerator body is eliminated .

Fifth, there is an advantage that a separate lead wire does not need to be extended for power supply and signal transmission / reception with a driving motor connected to the rear side of the drawer, thereby solving the problem of lead wire processing. In addition, since the lead wire does not need to be extended to the driving motor moving together with the drawer, there is an advantage that the electrical stability is ensured.

Hereinafter, specific embodiments of the present invention will be described in detail with reference to the drawings. It should be understood, however, that there is no intention to limit the scope of the present invention to the embodiment shown, and that other embodiments falling within the scope of the present invention may be easily devised by adding, Can be proposed.

FIG. 1 is a perspective view showing a refrigerator having a drawer draw-out mouth structure according to a first embodiment of the present invention, and FIG. 2 is a perspective view showing a drawer draw-out state of a refrigerator having the drawer draw-out mouth structure.

1 and 2, a refrigerator 10 according to an embodiment of the present invention includes a main body 11 provided with a refrigerating chamber (not shown) and a freezing chamber 111 therein, A refrigerator compartment door 12 rotatably mounted on the refrigerator compartment to open and close the refrigerator compartment and a drawer 13 provided below the refrigerator compartment to be drawn in and out of the freezer compartment 111.

The drawer 13 includes a door 131 that forms a front surface and opens and closes the freezing chamber 111 and a storage box 132 that is provided on the rear surface of the door 131 and accommodates food .

The refrigerator 10 further includes a frame 15 extending rearward from a rear surface of the freezing chamber door 131 and supporting the storage box 132, And a rail assembly 16 for allowing the rail assembly 16 to be drawn in and out. In detail, one end of the rail assembly 16 is fixed to the inner circumferential surface of the freezing chamber 111, and the other end thereof is fixed to the frame 15, and the length thereof is adjustable.

The freezing chamber 111 is provided on both sides of the freezer compartment 111 to prevent the rail box assembly 132 from being pinched by the rail assembly 16, A rail guide 17 for accommodating the storage box 132 and a drawing device for automatically drawing the storage box 132 therefrom. The suspension device includes a suspension unit 18 coupled to a rear end of the frame 15 to prevent the storage box 132 from being swayed in the left and right directions during the loading and unloading of the storage box 132, And a guide member for moving the suspension unit 18. More specifically, the rail guide 17 is formed with a rail seating groove 171 for receiving the rail assembly 16. A guide rack 172 corresponding to the guide member is formed at a lower end of the rail seating groove 171 in a longitudinal direction.

The suspension unit 18 includes a shaft 181 having both ends connected to the pair of frames 15 and a pinion 182 provided at both ends of the shaft 181. A plurality of gears are formed on an outer circumferential surface of the pinion 182, and a gear is formed on an upper surface of the guide rack 172 to rotate the pinion 182 in engagement with the pinion 182. Accordingly, when the pinion 182 is rotated in the state of being engaged with the guide rack 172, the drawer 32 is pulled straight without being biased to the left or right. In addition, a phenomenon of shaking in the left and right direction does not occur in the process of drawing the drawer (13).

In the refrigerator 10, a drawer drawing device for automatically drawing the drawer 13 is provided.

More specifically, the drawer drawing device includes a driving force generating portion provided in any one or both of the pair of pinions 182 to supply rotational force to the pinion 182, and a driving force generating portion And a driving force transmitting portion for allowing the storage box 132 to be drawn out. Here, the driving force generating unit may be a driving motor 20 that provides a rotational force to the pinion 182. The outflow force transmitting portion may be a rocking prevention device including the suspension portion 18 and the guide rack 172. That is, the rocking prevention device also functions as a driving force transmitting portion for automatic withdrawal of the drawer 13, in addition to the function of preventing the drawer 13 from swinging to the left and right. Then, the driving force generating portion moves with the freezing chamber door 131 in one body. Here, it is to be noted that the driving force generating unit is not limited to the driving motor 20 but includes all the driving means for enabling automatic withdrawal of the drawer 13, such as an actuator using a solenoid of the storage box.

On the other hand, a power supply device 70 is provided on the driving force generating portion, that is, on the outer circumferential surface of the driving motor 20 and the rear surface of the inner case 112. The power supply device 70 includes an adapter 72 through which a commercial voltage flows into a room and a power supply 70 connected to the outer periphery of the driving motor 20 for receiving power from the adapter 72, And a charging unit 71 for charging the battery. The configuration of the power supply device 70 will be described in more detail below with reference to the drawings.

The rail assembly 16 includes a fixed rail 161 fixed to the rail seating groove 171, a movable rail 162 fixed to the frame 15, And an extension rail 163 for connecting the extension rail 162.

In detail, the fixed rail 161, the movable rail 162 and the extension rail 163 are connected so as to be capable of multi-stage drawing. The rail assembly 16 may be provided with one or more extension rails 163 depending on the length of the storage box 132 in the anteroposterior direction. Alternatively, the rail assembly 16 may be composed of only the fixed rail 161 and the movable rail 162. The shaft 181 constituting the suspension unit 18 and the drive motor 20 may be fixed to the rear end of the frame 15 according to a design method and may be fixed to the rear end of the movable rail 162 It may be fixed.

The storage box 132 is detachably coupled to the frame 15 so that the user can periodically clean the storage box 132. [

Meanwhile, a dispenser 19 capable of taking out water or ice may be provided on the front surface of the refrigerator compartment door 12.

In detail, a part of the front surface of the dispenser 19 has a container receiving portion 193 recessed to a predetermined depth. An ice chute 194 through which ice is taken out and an outlet (not shown) through which water is taken out are provided in the ceiling portion of the container accommodating portion 193. A take-out lever 195 for taking out ice is provided on the rear side of the ice chute 194. A reservoir receiver 196 is provided on the bottom surface of the container accommodating portion 193. The display 191 displays various information such as the operation state of the refrigerator or the temperature of the refrigerator at the one edge of the dispenser 19 and an input button 192a for inputting the input / May be provided.

More specifically, the input button 192a for the input / output command input of the storage box may be provided in various ways such as a capacitive switch using a capacitance change and a commonly used tact switch or a toggle switch.

In addition, the input button 192a may be provided on one side of the dispenser 19, or alternatively, may be provided on the front or side of the freezing chamber door 131 as a touch button.

Alternatively, the input button 192a may be a vibration detection switch provided on one side of the freezing chamber door 131 and sensing vibration transmitted to the freezing chamber door 131. That is, when the user applies a weak shock to the freezer compartment door 131 by using his or her feet in a state where both hands can not be used, the driving motor 20 may be operated by sensing the vibration transmitted from the shock will be.

3 is a rear perspective view of a drawer assembly showing an installation of a power supply device for supplying power to a drawer drawer according to an embodiment of the present invention.

Referring to FIG. 3, the power supply apparatus 70 includes an adapter 72 and a charging unit 71 as described above.

In detail, the adapter 72 is fixedly mounted on the rear surface of the inner case 112, and is electrically connected to an inverter (not shown) provided in the main control unit of the refrigerator. The charging unit 71 is surrounded by the outer circumferential surface of the driving motor 20 and is selectively in contact with the front surface of the adapter 72. The charging unit 71 and the adapter 72 are curved in the same direction as the curvature of the outer circumferential surface of the driving motor 20 so that the charging unit 71 and the adapter 72 can be easily contacted with each other.

A charging terminal (not shown) is provided on the side where the adapter 72 and the charging part 71 are in close contact with each other so that electric power is supplied to the charging part 71 in a state where the drawer 13 is closed .

Alternatively, power may be supplied from the adapter 72 to the charging unit 71 using a wireless power transmission scheme. In detail, when the wireless power transmission method is used, power transmission is possible even when the charging unit 71 is disconnected from the adapter 72. [ The wireless power transmission scheme, also referred to as Contactless Energy Transmission Systems (CEETS), delivers electrical energy from one device to another without any mechanical connection.

The above-described wireless power transmission scheme is disclosed in detail in U.S. Patent Application Publication No. 2004-0150934, U.S. Patent Nos. 7,126,450 and 7,212,414, and therefore, a detailed description thereof will be omitted. However, the present invention is characterized in that the above-described wireless power transmission system can be applied to a drawer drawer of a refrigerator.

6) for allowing an operation signal input to the input button 192a to be wirelessly transmitted to the driving motor 20 is transmitted to one side of the rear wall of the inner case 112, Some are mounted. That is, a transmitting unit 81 for transmitting a signal to the driving motor 20 is mounted on the rear wall of the inner case 112. The construction and operation of the signal transmission means 80 will be described in more detail below with reference to the drawings.

FIG. 4 is a partial perspective view showing a power transmission device in a state where a drawer is drawn in a refrigerator according to an embodiment of the present invention, and FIG. 5 is a partial perspective view showing a power transmission device in a state in which the drawer is drawn out.

4 and 5, the power transmission device 70 according to the embodiment of the present invention selectively contacts and separates according to the draw-out state of the drawer 13. When the drawer 13 is in contact with the charging unit 71, the charging unit 71 is charged. In the separated state, the electric energy stored in the charging unit 71 is transmitted to the driving motor 20, ). If the power transmission apparatus 70 uses a wireless power transmission scheme, the charging unit 71 may be charged even when it is detached from the adapter 72. [

6 is a perspective view showing the internal structure of a driving motor for supplying a driving force to a drawer draw-out apparatus according to an embodiment of the present invention.

Referring to FIG. 6, the driving motor 20 provided in the drawer draw-out apparatus according to the embodiment of the present invention may be a BLDC motor having a hall sensor.

In detail, the motor control unit may be provided inside the driving motor 20 in the form of a PCB substrate. The motor control unit in the form of the PCB board may include components constituting the signal transmitting unit 80. [

More specifically, the driving motor 20 includes a housing 21 which forms an outer shape, a rotor 26 which rotates inside the housing 21, a retainer surrounding the outer side of the rotor 26, And a motor shaft 22 connected to the center of the rotor 26 and rotating. A receiving portion 82 for receiving an electric signal transmitted from the transmitting portion 81 is mounted on either side of the stator 25. A connection part 83 for electrically connecting to the charging part 71 is provided at one side of the receiving part 82. That is, the electric energy stored in the charging unit 71 is transmitted to the receiver 82 and the motor controller through the connection unit 83. An antenna 84 for receiving a signal transmitted from the transmitting unit 81 is extended from one side of the receiving unit 82 and the antenna 84 is connected to the outside of the driving motor 20 Lt; / RTI > The receiving unit 82 may be embedded in a PCB substrate constituting the motor control unit or may be mounted on the stator 25 in the form of a separate substrate. Also, the transmitter 81 may be provided with an antenna for signal transmission / reception.

Meanwhile, the transmitter 81 and the receiver 82 can transmit and receive signals wirelessly. That is, the transmitter 81 and the receiver 82 can transmit and receive an operation command signal through a short-range wireless communication means such as RF-ID (Radio-Frequency IDentification), Bluetooth or Zigbee . Here, the wireless transmission / reception method is well known to those skilled in the art, and a detailed description thereof will be omitted. However, the present invention is characterized in that a driving motor operation signal input by the input button is transmitted to the driving motor by applying the wireless transmitting / receiving means as described above. Of course, the main control unit of the refrigerator and the transmitter 81 may be connected by wire.

The wireless transmitting and receiving means as described above is advantageous in that signal transmission and reception are facilitated in the process of moving the driving motor 20 integrally connected to the drawer 13 together with the drawer 13 in the forward and backward directions. In addition, since the lead wire connecting the driving motor and the main control unit is not required, the drawer drawing apparatus can be realized much more easily.

FIG. 7 is a perspective view showing a drawer drawer according to an embodiment of the present invention, and FIG. 8 is an exploded perspective view of the drawer drawer.

7 and 8, the driving force generating unit constituting the drawer draw-out apparatus according to the embodiment of the present invention may be the driving motor 20, and the driving motor 20 may be integrally formed with the suspension unit 18 As shown in Fig.

The suspension unit 18 includes the suspension unit 18 and the guide rack 172. The suspension unit 18 may include the shaft 181 and the pinion 182 as described above. Here, the guide rack 172 and the pinion 182 correspond to one embodiment of the rocking prevention device, and the design can be changed to another structure that performs the rocking prevention function. For example, instead of the pinion 182, a roller around which a friction member surrounds may be applied, and instead of the guide rack 172, a friction member that generates a frictional force in contact with the roller may be applied. In other words, it is noted that any structure is possible in which the rolling member can move in the forward and backward direction while rotating without contact with the guide member like the pinion 182 and guide rack 172 structure.

 An inner rotor type motor can be applied to the driving motor 20, and the pinion 182 is connected to a motor shaft 22 connected to the rotor. It is to be noted that the drive motor 20 is capable of all kinds of motors capable of forward and reverse rotation and variable speed.

In detail, the rotor and the stator constituting the drive motor 20 are protected by the housing 20. A fastening end 31 to which the driving motor 20 is fixed is extended to the rear end of the frame 15 and the fastening end 31 and the housing 21 of the driving motor 20 are fixed to the bracket 30 ). Accordingly, a combined body of the driving motor 20 and the suspension unit 28 is fixedly coupled to the rear end of the frame 15, and the pinion 182 is rotatably coupled to the motor shaft 22 do.

Here, various methods for fixing the driving motor 20 to the frame 15 may be proposed, and these are all included in the spirit of the present invention. The driving motor 20 may be fixed to the rear end of the moving rail 162 in addition to the frame 15. In other words, all the coupling structures in which the driving motor 20 is formed integrally with the frame 15 and move together with the storage box 132 and the freezer compartment door 131 in the forward and backward directions are included in the concept of the present invention would.

9 is a partial perspective view showing the structure of the other end of the suspension unit according to the embodiment of the present invention.

Referring to FIG. 9, in the present embodiment, the drive motor 20 is provided only at one end of the suspension unit 18. However, it goes without saying that the driving force generating portion, i.e., the driving motor 20 may be provided to the pair of pinions 182, respectively.

In detail, the pinion 182 is rotatably coupled to the other end of the suspension unit 18 as well. When the drive motor 20 is not connected, the shaft 181 may be inserted into the frame 15 through the pinion 182. In other words, a bracket 30 is provided at the rear end of the frame 15, and the shaft 181 is inserted into the bracket 30 through the pinion 182. Both ends of the suspension part 18 are stably coupled to the frame 15 so that one end of the suspension part 18 is separated from the frame 15 in the process of inserting and extracting the storage box or the storage box 132 is swung in the left- Is prevented.

In this case as well, it is needless to say that the shaft 1810 may be inserted into the rear end of the movable rail 162 as described above.

Hereinafter, the automatic withdrawal and insertion process of the storage box 132 performed in the refrigerator having the storage box withdrawing device constructed as above will be described.

First, the user presses the input button 192a provided on one side of the dispenser 19 or the refrigerator 10 in order to take out the storage box 132 and store or deliver the food. When the input button 192a is pressed to input the storage box draw command, a command is transmitted to the control unit of the refrigerator 10. [ The main control unit of the refrigerator 10 transmits an operation signal to the motor control unit that controls the operation of the driving motor 20. [ Specifically, the operation signal includes direction information for moving the storage box and moving speed information of the storage box. That is, the direction of rotation of the driving motor is determined by the direction information, and the RPM of the driving motor is determined by the speed information. Here, the operation signal transmission from the main control unit to the motor control unit may be performed wirelessly by the signal transmission unit 80. [

More specifically, the driving motor is driven in accordance with the operation signal, so that the freezing chamber door 131 is drawn forward. Power supply to the drive motor 20 may be performed wirelessly by the power transmission device 70. [

As described above, since the storage box 132 can be automatically drawn out even if there is no user's pull-out operation, it is not necessary to attach a separate handle member to the entire surface of the freezing chamber door 131. [ That is, the freezer compartment door 131 may include an outer cover having a smooth front surface without protrusions, an inner cover coupled to a rear surface of the outer cover, and a heat insulating material interposed between the outer cover and the inner cover.

The control unit of the refrigerator 10 receives the rotational speed RPM of the driving motor 20 in real time and calculates the drawing speed m / s of the storage box 132. For example, it is possible to calculate the moving speed of the storage box 132 per unit time with the rotation speed of the drive motor 20 and the circumferential value of the pinion 182. The storage box 132 can be taken out at a set speed using the above-described information. The storage box 132 can be drawn out at a set speed regardless of the load of the food stored in the storage box 132. [

In addition, the storage box 132 can be continuously or intermittently pulled in and out according to the operation method of the input button 192a.

For example, when the input button 192a is pressed once, the storage box 132 can be drawn to the end. Alternatively, the input button 192a may be repeatedly depressed with a predetermined time difference to allow the storage box 132 to be drawn out multiple times.

In addition, when the storage box 132 hits an obstacle in the process of being drawn out, it may be automatically stopped or retracted.

Alternatively, the storage box 132 may be stopped in a state in which the storage box 132 is drawn out at a predetermined distance, and may be controlled so as to be retracted or completely retracted according to the user's intention. In other words, when the user pulls the freezing chamber door 131 in a state where the storage box 132 is drawn out for a predetermined distance and stops, the storage box 132 is completely drawn out. When the user opens the freezing chamber door 131, It may be detected that the storage box 132 is pulled in.

In addition, if the storage box 132 is not pulled out or stopped during the withdrawal even though the storage box retrieval command is inputted through the input button 192a, it may be detected and an error warning signal may be generated.

In addition, the storage box 132 of the refrigerator according to the embodiment of the present invention is characterized in that it can be drawn out not only automatically but also manually. For example, when the power is not applied to the drive motor 20 due to a power failure or the user pulls the freezer compartment door 131 by hand without manipulating the input button 192a, Is smoothly drawn out without being subjected to the resistance force of the drive motor (20). In other words, even when the drive motor 20 is not operated, the drawing of the storage box by the drive motor 20 is not hindered.

In addition, when the storage box 132 is drawn out, it is automatically closed when a predetermined time elapses, so that the cooling loss can be minimized.

1 is a perspective view showing a refrigerator having a drawer draw-in mouth structure according to a first embodiment of the present invention;

FIG. 2 is a perspective view showing a draw-out state of a storage box assembly of a refrigerator provided with the drawer draw-out mouth structure. FIG.

3 is a rear perspective view of a drawer assembly showing a mounting of a power supply device for supplying power to a drawer drawer according to an embodiment of the present invention;

FIG. 4 is a partial perspective view showing a power transmission device in a state where a drawer is drawn in a refrigerator according to an embodiment of the present invention; FIG.

5 is a partial perspective view showing a power transmission apparatus in a state in which the drawer is drawn out;

6 is a perspective view showing an internal structure of a driving motor for supplying a driving force to a drawer draw-out apparatus according to an embodiment of the present invention;

7 is a perspective view showing a drawer drawer according to an embodiment of the present invention;

8 is an exploded perspective view of the drawer drawer.

9 is a partial perspective view showing the structure of the other end of the suspension unit according to an embodiment of the present invention.

Claims (14)

A main body having a storage space for food storage; An evaporator provided at one side of the main body to generate cool air; A drawer which is drawably provided in the storage space and in which foods are stored; A drive motor for supplying rotational force to move the drawer; A bracket for mounting the driving motor to the drawer; A control unit for controlling movement of the drawer; And At least a part of which is connected to the drive motor to supply electric power, Wherein the driving motor is moved together with the drawer when the drawer is drawn or drawn. delete The method according to claim 1, A rolling member connected to a shaft of the driving motor, And a guide member provided in a space in which the drawer is accommodated to guide movement of the rolling member. The method according to claim 1, The power supply means includes: An adapter mounted on an inner surface of a space in which the drawer is accommodated, And a charging unit mounted on the driving motor and selectively in contact with the adapter to receive power. 5. The method of claim 4, Wherein a terminal for current movement is provided at a portion where the adapter and the charging unit are in contact with each other. 5. The method of claim 4, Wherein the charging unit receives power wirelessly from the adapter. A main body in which a refrigerating chamber maintained at a temperature higher than the freezing temperature and a freezing chamber maintained at a temperature lower than the freezing temperature are provided; An evaporator provided in the main body so as to generate cold air; A compressor for compressing the refrigerant passing through the evaporator; A condenser for condensing the refrigerant having passed through the compressor; An expansion member for expanding the refrigerant passing through the condenser to a low temperature and a low pressure; A drawer provided so as to be drawable to the refrigerator compartment or the freezer compartment; A drive motor integrally connected to the drawer; A bracket for mounting the driving motor to the drawer; An input button for inputting a move command of the drawer; Signal transmission means provided for allowing a drive command inputted from the input button to be transmitted to the drive motor; Wherein the driving motor is moved together with the drawer when the drawer is drawn or drawn. 8. The method of claim 7, Further comprising a rocking prevention device provided on a rear side of the drawer to prevent rocking in a process of moving the drawer. 9. The method of claim 8, In the swing prevention device, A suspension provided at a rear end of the drawer in a lateral direction, and a rolling member connected to an end of the shaft; And And a guide member protruding from a side surface of the refrigerating chamber or the freezing chamber and extending in the front-rear direction, the guide member contacting the rolling member. 10. The method of claim 9, And the rotating shaft of the driving motor is connected to the shaft. 8. The method of claim 7, Wherein the signal transmitting means is a short range wireless communication means. 12. The method of claim 11, Wherein the short-range wireless communication means includes RF-ID, Bluetooth, and ZigBee. 8. The method of claim 7, The signal transmission means includes: A transmitting unit mounted on an inner surface of the refrigerator compartment or the freezer compartment, A receiving portion provided inside the driving motor, And an antenna for allowing the transmitter and the receiver to wirelessly transmit and receive signals. main body; A drawer provided to be drawable inside the main body; A drive motor moving together with the drawer; A control unit for controlling an operation of the driving motor; Wireless power supply means for supplying power to the drive motor; And a wireless transmitting / receiving means for transmitting an operation signal transmitted from the control unit to the driving motor.

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