KR20170082096A - refrigerator - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a refrigerator, and more particularly, to a refrigerator in which a user can easily pull in / out a stored product. More particularly, the present invention relates to a refrigerator which can easily use a drawer for receiving a stored product.
According to an embodiment of the present invention, there is provided a cabinet including a storage chamber; A door rotatably installed in the cabinet to open and close the storage compartment; A sensor installed in the storage room to move from an initial position forward to an operation position spaced apart by a predetermined distance when the door is opened; Wherein the drawer is resiliently deformed when the drawer is moved from the initial position to the operating position and provides elastic restoring force such that the drawer moves from the operating position to the initial position; An electric drive part for moving the drawer from the initial position to an operation position and elastically deforming the drawer holder; And a rail provided so that the guide can be moved back and forth with respect to the storage compartment.

Description

Refrigerator {refrigerator}

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a refrigerator, and more particularly, to a refrigerator in which a user can easily pull in / out a stored product. More particularly, the present invention relates to a refrigerator which can easily use a drawer for receiving a stored product.

Generally, a refrigerator discharges cold air generated by a refrigeration cycle including a compressor, a condenser, an expansion valve, an evaporator, etc. to lower the temperature of the inside of the refrigerator and freeze or refrigerate food or the like.

The refrigerator generally comprises a freezing room for storing food or beverage by freezing as a storage room, and a refrigerator for storing the food or beverage at a low temperature.

The refrigerator includes a top mount type in which a freezing compartment is disposed in an upper portion of a refrigerating compartment, a bottom freezer type in which a freezing compartment is disposed in a lower portion of the refrigerating compartment, a side by side type compartment in which a freezing compartment and a refrigerating compartment are divided into left and right (Side By Side Type). In this case, each of the freezer compartment and the refrigerating compartment is provided with a door, and the freezing compartment or the refrigerating compartment can be accessed through the door.

In addition to the refrigerator in which the refrigerator compartment and the freezer compartment are separated from each other, there is a refrigerator which allows access to the freezer compartment and the refrigerator compartment through a single door. Such a refrigerator is generally small in size, and a freezer is generally provided in a certain space inside the refrigerator compartment.

Also, among the top mount type refrigerators, there is provided a French type refrigerator in which the upper refrigerating chamber is opened and closed through the right and left doors. The freezer compartment of the French-type refrigerator can also be opened and closed through the right and left doors.

The refrigerator compartment and the freezer compartment are generally provided with a shelf in which the stored product is placed and a storage box containing the stored product. The storage box is generally provided to form an independent storage space in the storage room. That is, a storage box may be provided to store vegetables, fruits, etc., independently of other storage materials, or to store meat, oysters, etc. separately from other storage materials.

Recently, the capacity of the refrigerator has been increasing. Therefore, since the front and rear widths of the storage room such as the refrigerator compartment and the freezer compartment become large, it is not easy to take stored stored contents deep inside. Therefore, most of the storage boxes are provided in the form of drawers. That is, the user pulls out the storage box by pulling it out and can take out the stored contents. In particular, most of these drawer-type storage boxes are provided in the lower area of the refrigerator, thereby enhancing the user's convenience.

In recent years, a home-bar, an ice maker, a shelf or a door box is mounted on a rear surface of a door of a refrigerator, and the rear surface of the door is used as a separate storage space or as a separate functional space have. That is, the function of the door merely goes beyond opening and closing the freezer compartment or the refrigerating compartment, and the door forms an additional storage space or performs additional functions such as the generation and supply of ice or cold water. For this reason, the distance that the rear surface of the door is drawn into the refrigerator compartment or the freezer compartment is getting longer. Therefore, there may arise a problem that the front end portion of the shelf or the storage box provided in the back surface of the door and the freezing chamber or the freezing chamber interferes with the rear surface of the door.

In order to reduce such interference, the front end of the shelf or the storage box may be spaced a predetermined distance rearward from the front surface of the refrigerator. That is, the front end of the shelf or the storage box may be positioned further behind the freezer compartment or the refrigerating compartment. Therefore, when the storage box is provided in the form of a drawer, it may be difficult for the user to grasp the front end of the storage box and pull it out. In other words, the user may have difficulty in putting his / her hand deep into the storage compartment and taking out the storage box. Particularly, when the storage box is located at the lower portion of the refrigerator, it is not inconvenient to extend the hand from the crooked posture and pull out the storage box.

This inconvenience can be easily understood when the user opens the door to open the storage box and imagines that the front end of the storage box (i.e., the handle of the storage box) is not in front of the user but deep in the storage room.

On the other hand, the drawers in the conventional refrigerator, in particular the drawers in the freezer compartment, are drawn in and out through the rails. Generally, the rails are provided on the side walls of the storage chamber, and the drawers are provided with rail connection portions. The rail connection part is formed in a roller shape, and the drawer is moved back and forth while being inserted into the rail.

However, this type of drawer is not easy to join the drawer to the rail. In particular, it is not easy to fit the rollers on the rails with the drawers in the state that the heavy stores are stored in the drawers.

If necessary, the drawer may be separated from the refrigerator after being taken out of the drawer and then taken out of the storage or taken out of the storage. In this case, it is not a troublesome task to separate the rail connection part from the rail and re-engage it. Therefore, unless there are special circumstances, the user may know the necessity of separating the drawer and use it without separation.

The present invention basically aims to solve the problem of a conventional refrigerator.

According to an embodiment of the present invention, there is provided a refrigerator wherein a drawer provided in a storage compartment is automatically drawn forward by a predetermined length when a user opens a door of the refrigerator. That is, the drawer is to be automatically moved from the initial position to the operating position.

According to an embodiment of the present invention, there is provided a refrigerator in which a drawer is automatically moved from an initial position to an operation position through an electric drive unit, and a user does not need to exert additional force other than a force for opening the door.

According to an embodiment of the present invention, there is provided a refrigerator in which a drawer can be automatically returned from an operating position to an initial position when a user closes a door of the refrigerator. In other words, it is intended to provide a refrigerator which can reduce the labor of the user who draws the drawer from the initial position to the operation position, and reduce the labor of the user who draws the drawer from the operation position to the initial position.

According to an embodiment of the present invention, there is provided a refrigerator wherein the drawer can be automatically drawn out by the operation of the electric drive unit, and the drawer can be automatically drawn by the resilient restoring force of the spring.

It is an object of the present invention to provide a refrigerator capable of remarkably reducing interference between drawers that automatically move when a door is opened or closed through a sensor that senses a door opening (closing) angle with high accuracy. That is, when a door opening (closing) angle in which interference between a door and a drawer is minimized, it is desired to provide a refrigerator capable of detecting door opening (closing) with high accuracy at the set angle.

According to an embodiment of the present invention, there is provided a door openness sensor and a refrigerator including the same, which can flexibly cope with a change of a predetermined door opening angle according to a product model.

According to an embodiment of the present invention, there is provided a refrigerator which can be easily applied to a conventional refrigerator and can be detected when the door is opened and the door is closed through the same sensor.

It is an object of the present invention to provide a refrigerator having an interior design of a storage compartment which can protect the electric drive unit by preventing the structure for automatically drawing the drawer from being exposed to the inside of the storage compartment, .

According to an embodiment of the present invention, there is provided a refrigerator capable of moving a plurality of drawers substantially simultaneously from an initial position to an operation position through one electric drive part.

According to an embodiment of the present invention, there is provided a refrigerator in which automatic draw-in and draw-out of a drawer can be performed with reliability and durability. In particular, the present invention provides a refrigerator which can minimize damage to the electric drive unit due to overload of the electric drive unit or repeated use for a long time.

A refrigerator which can be easily assembled and easily repaired when necessary, such as a drawer to be automatically drawn out and an electric driver for automatically drawing a drawer through an embodiment of the present invention, ≪ / RTI >

According to an embodiment of the present invention, there is provided a refrigerator which can automatically draw out a plurality of drawers integrally, and is easy to manufacture and maintain.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a refrigerator which can easily connect and disconnect the drawer to a rail supporting a drawer.

According to an embodiment of the present invention, it is intended to provide a refrigerator which can easily separate and combine a basket for accommodating a stored product in a drawer. That is, it is desirable to provide a refrigerator which can easily separate and reassemble only the basket while maintaining the connection between the rails and the rail connection portions of the drawers.

In one embodiment of the present invention, there is provided a refrigerator capable of minimizing the visual exposure of a rail to a user.

According to an embodiment of the present invention, there is provided a control method of a refrigerator that minimizes a load of a motor and can flexibly respond to various conditions of use of a drawer.

According to an aspect of the present invention, there is provided a cabinet comprising: a cabinet having a storage chamber; A door rotatably installed in the cabinet to open and close the storage compartment; A sensor installed in the storage room to move from an initial position forward to an operation position spaced apart by a predetermined distance when the door is opened; Wherein the drawer is resiliently deformed when the drawer is moved from the initial position to the operating position and provides elastic restoring force such that the drawer moves from the operating position to the initial position; An electric drive part for moving the drawer from the initial position to an operation position and elastically deforming the drawer holder; And a rail provided so that the drawer is moved back and forth with respect to the storage chamber.

Preferably, the drawer holder includes a hook member selectively connected to the drawer, and a spring elastically deformed or resiliently restored according to a moving direction and a distance of the hook member. That is, the spring may be elastically deformed when the drawer is moved forward in a state where the hooking member is connected to the drawer. When the pushing force of the drawer is removed while the hooking member is connected to the drawer, the drawer can be moved backward by elastic restoration of the spring. Therefore, the forward movement (withdrawal) of the drawer is automatically performed by driving the electric drive part, and the backward movement (drawing) of the drawer can be automatically performed by the elastic force of the drawer holder.

The drawer is preferably provided with a latching member selectively connected to the drawer holder.

The drawer holder may include a housing having a slot for receiving the spring and guiding the movement of the hooking member. The housing is provided in a fixed state, and the hooking member is moved with respect to the housing. Of course, the hooking member may be provided to move together with the drawer.

The hooking member may protrude in a horizontal direction with respect to the housing and may be selectively connected to the drawer.

The motor driving unit may include a motor assembly and a moving frame. The moving frame may be movable back and forth between the initial position and the operating position by driving the motor assembly.

The moving frame includes a transmitting member for transmitting a force to the drawer, and the transmitting member pushes the drawer so that the drawer can be moved from the initial position to the operating position.

The motor driving unit includes a motor assembly and a transmitting member that is moved back and forth by driving the motor assembly. The transmitting member may be provided to move the engaging member of the drawer forward through the holding member. Accordingly, the automatic draw-out and automatic draw-in are possible through the single latching member provided on the drawer.

The hook member protrudes from the housing of the drawer holder and is connected to the hooking member of the drawer. The transmitting member may be provided to push the hooking member in a direction perpendicular to the protruding direction of the hooking member.

Preferably, a seating portion is formed at one side of the hooking member so that the transmitting member is brought into contact with the seating portion. Accordingly, stable transmission of force and displacement from the transmitting member to the hooking member becomes possible.

The movement of the transmitting member is transmitted to the hooking member as the transmitting member is seated on the seating portion and moved forward, and when the transmitting member is detached from the seating portion and moved backward, the transmitting member and the hooking member Is disconnected. That is, the transmitting member is provided so as to push the hooking member, but is not provided to pull the hooking member.

According to an aspect of the present invention, there is provided a cabinet comprising: a cabinet having a storage chamber; A door rotatably installed in the cabinet to open and close the storage compartment; A sensor for detecting opening of the door; Wherein the door is provided in the storage chamber so as to move from an initial position forward to an operation position spaced apart by a predetermined distance when the door is opened; A drawer holder including a retaining member selectively connected to the retaining member and a spring elastically deformed or resiliently restored by movement of the retaining member; An electric drive unit including a transmitting member for pushing the hook member to move the drawer from the initial position to an operating position, and a motor assembly for moving the transmitting member by electric power; And a rail provided so that the drawer is moved back and forth with respect to the storage chamber.

And the connection between the latching member and the latching member is maintained in the interval between the initial position and the operating position. Therefore, the spring of the drawer holder can be elastically deformed by drawing out the drawer in the section.

The connection between the latching member and the latching member is released as the drawer is further pulled forward at the operating position so that the drawer can be manually pulled out. That is, when the connection between the latching member and the latching member is released, the drawing of the drawer no longer resiliently deforms the spring of the drawer holder. When the connection is released, the spring is preferably maintained in an elastically deformed state.

In order to move the drawer from the operating position to the initial position, the electric drive unit is preferably driven to move the transmitting member backward. That is, it is preferable that the pushing force of the drawer is no longer transmitted to the drawer. Accordingly, as the spring is resiliently restored, the retaining member moves the retaining member backward so that the drawer can be returned from the operating position to the initial position.

Preferably, the drawer holder includes a housing having the slot for receiving the spring and guiding the movement of the hooking member.

The hanger member protrudes toward the drawer with respect to the housing and can be selectively connected to the drawer.

Preferably, the transmitting member is positioned between the housing and the latching member, and is configured to push the latching member forward from the rear of the latching member.

Wherein the plurality of drawers are vertically provided and each of the plurality of drawers is provided with the transmission member and the electric drive unit is provided to move the plurality of transmission members integrally by driving the motor assembly And a moving frame.

According to an aspect of the present invention, there is provided a cabinet comprising: a cabinet having a storage chamber; A door rotatably installed in the cabinet to open and close the storage compartment; A magnet provided on the door and configured to rotate with a predetermined radius of rotation around a rotation axis of the door as the door is opened; The magnet is provided on the upper or lower portion of the magnet so as to be spaced apart from the magnet and is fixed to the cabinet irrespective of the rotation of the door. When the opening angle of the door reaches a preset opening angle, And a reed switch having a critical point of the reed switch.

The magnet may be provided such that a vertical distance from the reed switch is maintained as the opening angle of the door is changed, and only the horizontal distance is variable. Therefore, when the horizontal distance between the reed switch and the magnet is out of the critical point, the reed switch senses that the door is opened at a predetermined opening angle.

The magnet may be mounted inside a door decor forming a lower surface of the door, and the reed switch may be provided under the magnet.

The rotation axis of the door may be formed as a vertical axis so that the door rotates right and left to be opened and closed, and is spaced from the left or right of the cabinet so as to be spaced forwardly of the cabinet.

The reed switch may be provided to be spaced apart from the front of the cabinet and biased toward the left and right center of the cabinet from the rotation axis of the door.

It is preferable that the reed switch is provided on a hinge cover which forms a rotation axis of the door and is formed horizontally with respect to the ground.

Preferably, the magnet is provided such that a horizontal distance between the magnet and the reed switch increases along a vertical upper portion of the reed switch as an opening angle of the door increases.

It is preferable that the opening or closing of the door is detected by switching the contact of the reed switch. It is preferable that the contact switching is performed at the same door opening angle. The door opening angle may be set to approximately 90 degrees. When the door is opened and opened to an angle of 90 degrees, the contact of the reed switch is switched and the opening of the door can be sensed. Thereafter, the door can be further opened. When the door is closed in a state that the door is opened in excess of 90 degrees and the door is closed to an angle of 90 degrees, the contact of the reed switch can be switched to detect the closing of the door.

Preferably, the magnet includes a plurality of magnets having different horizontal angles with respect to the reed switch. This makes it possible to significantly reduce errors and deviations between products, rather than using only one magnet.

Preferably, the magnet includes a horizontal magnet arranged to be parallel to a front surface of the cabinet in a closed state of the door, and a vertical magnet having a longitudinal direction substantially perpendicular to the horizontal magnet.

It is preferable that the magnet is a rod magnet and the length thereof is larger than the height of the magnet in a mounted state.

The reed switch may be provided to have a rectangular shape having a transverse side and a longitudinal side. It is preferable that the length of the side of the reed switch is larger than the length of the side of the reed switch. Preferably, the lengths of the horizontal magnet and the vertical magnet are larger than the transverse sides of the reed switch.

When the opening angle of the door is 90 degrees, the angle between the horizontal magnet and the side of the reed switch is preferably substantially 90 degrees.

It is preferable that a turning radius of the horizontal magnet with respect to the door rotation axis is smaller than a turning radius of the vertical magnet.

Wherein the horizontal magnet is mounted such that a distance between the horizontal magnet and the door rotation axis is reduced in order to increase the opening angle of the door corresponding to the critical point and in order to reduce the opening angle of the door corresponding to the critical point, The horizontal magnet may be mounted such that a distance between the magnet and the door rotation axis is increased.

According to an aspect of the present invention, there is provided a cabinet comprising: a cabinet having a storage chamber; A door rotatably installed in the cabinet to open and close the storage compartment; A reed switch provided on the door and fixed to the cabinet with a predetermined radius of rotation around the rotation axis of the door as the door is opened, the reed switch having a contact point at a critical point of strength of the effective magnetic force by the magnet A sensor for detecting that the door is opened when the door is opened at a predetermined opening angle; An electric drive unit for moving the drawer from an initial position to an operation position spaced forward by a predetermined distance when the door is opened; And a rail provided so that the drawer is moved back and forth with respect to the storage chamber.

Preferably, the magnet is provided such that a vertical distance from the reed switch is maintained as the opening angle of the door changes, and only the horizontal distance is variable.

Preferably, the magnet is mounted inside a door decor forming a lower surface of the door, and the reed switch is provided below the magnet.

Preferably, the magnet includes a plurality of magnets having different horizontal angles with respect to the reed switch.

According to an aspect of the present invention, there is provided a cabinet comprising: a cabinet having a storage chamber; A door rotatably installed in the cabinet to open and close the storage compartment; A drawer movably installed in the storage room; And a rail for supporting the drawer so as to be movable back and forth with respect to the storage chamber, the drawer including: a basket for receiving a storage; And a drawer frame having a basket mounting part on which the basket is mounted and a rail coupling part mounted on the rails and coupled with the rails. Therefore, the basket can be easily detachably attached to the drawer frame. In addition, the draw frame can be easily detachably attached to the rail through the rail coupling portion.

The basket may be vertically downwardly seated in the basket seating part and coupled with the draw frame, and the basket may be vertically moved upward to release the engagement with the draw frame.

An opening is formed in a central portion of the draw frame, and the seating portion may be formed around the opening.

The basket may include a lower basket inserted into the opening and an upper basket seated in the seating portion, and the lower basket and the upper basket may be integrally formed.

Preferably, the rail coupling portion extends forward and backward from both left and right sides of the drawer frame, and the upper basket is formed to have a greater lateral width than the lower basket to cover the rail coupling portion from the upper portion. Through this, it is possible to prevent the rail and the rail coupling portion from being exposed to the user visually.

Preferably, the rail includes a movable rail which moves back and forth integrally with the drawer.

The rail coupling portion may have a channel-shaped cross-section such that the rail coupling portion is seated while the moving rail is enclosed.

And a rear end of the rail coupling portion is hooked to the rear of the moving rail to form a latching portion for restricting the rearward movement and the upward movement of the rail coupling portion.

The latching portion may be formed to insert the rear end of the rail coupling portion.

The front end of the moving rail may be provided with an elastic protrusion, and a mounting hole may be formed at a front end of the rail coupling portion to elastically deform the elastic protrusion and then elastically restore the elastic protrusion.

As the front end of the rail coupling part is moved downward in a state where the rear end of the rail coupling part is inserted into the coupling part, the elastic projection is elastically deformed and then inserted into the mounting hole to be coupled.

That is, after the front of the rail coupling portion is positioned higher than the rear portion, the rear end of the rail coupling portion can be first inserted into the engagement portion. Thus, the left and right and front and rear positions of the rail coupling portion coupled to the rail can be tentatively determined. Then, the front of the rail coupling portion can be moved downward. When the front portion of the rail coupling portion is moved downward, the elastic protrusion is inserted into the mounting hole. Thus, the right and left front and rear support points of the rail coupling portion can be formed. Therefore, the rail coupling portion can be coupled to the rail very easily. On the contrary, the user can press the elastic projections located respectively on the left and right sides. The front portion of the rail coupling portion can be lifted upward while pressing the elastic projection. Through this, the front of the rail coupling portion and the rail are disengaged. Thereafter, the user can pull the rail coupling portion forward and lift the entire rail coupling portion upward. Thereby, the rail coupling portion can be completely separated from the rail.

Meanwhile, the draw frame formed with the rail coupling portion can be easily separated from the basket as described above. Thus, the user can engage the draw frame with the basket after first coupling the draw frame to the rail engaging portion. Of course, the separation order can be reversed. The weight of the drawer itself may be significant in the state where the stored product is stored in the basket. Therefore, it is difficult to separate or join the entire drawer at a time on the rails. However, since the basket and the draw frame can be easily separated and combined, it is very easy to couple the drawer to the rail or to separate it from the rail.

Preferably, the movable rails are provided on both sides of the drawer, and the drawer frame is fixed to the movable rail through four forward, rearward, left and right support points by the elastic projection and the engaging portion.

Preferably, the rail includes a fixed rail provided under the movable rail and fixed in the storage chamber, and the movable rail is slidable with respect to the fixed rail.

The drawer may include a draw deco that extends laterally to the front lower portion of the basket so as to cover the rail coupling portion in front of the drawer. Therefore, it is possible to prevent the rail-rail coupling portion from being exposed to the user visually through the draw decor.

Specifically, the basket is covered at the upper portion of the rail-rail coupling portion, and the draw decor is covered at the front portion.

According to an aspect of the present invention, there is provided a cabinet comprising: a cabinet having a storage chamber; A door rotatably installed in the cabinet to open and close the storage compartment; A drawer including a draw frame, which is provided in the storage room so as to be movable forward and backward and has a basket for receiving stored items and a rail coupling portion; And a rail coupled to the rail coupling portion and supporting the drawer so as to be movable back and forth with respect to the storage chamber, wherein the rail coupling portion is seated on an upper portion of the rail and is formed in a channel shape so as to surround the rail And a rear end of the rail is formed with a latch portion into which a rear end of the rail coupling portion is inserted and an elastic protrusion is formed in front of the rail to be inserted into a mounting hole provided at a front end of the rail coupling portion. have.

The rail includes a movable rail and a fixed rail slidably supporting the movable rail at a lower portion of the movable rail, and the rail coupling is coupled to the movable rail.

Preferably, the mounting hole is formed in a side flange covering an outer side surface of the moving rail, and the elastic protrusion is elastically deformed in the left and right center directions of the drawer and is then restored to be inserted into the mounting hole.

Preferably, the front end of the fixed rail is provided with an elastic projection bracket for forming the elastic projection on the fixed rail, and a cut portion is formed between the elastic projection bracket and the elastic projection to allow elastic deformation of the elastic projection . Therefore, since the elasticity of the structure itself is utilized, the structure of the elastic projection bracket and the elastic projection can be very simple.

In order to be easily mounted on the mounting hole or easily separated from the mounting hole, the elastic protrusion is preferably formed in a round shape.

The rail preferably includes a rail bracket for fixing the stationary rail to the side wall of the storage chamber.

Preferably, the rail bracket includes a front rail bracket and a rear rail bracket, which are respectively provided at front and rear of the fixed rail at predetermined distances. Therefore, the rail can be stably supported. Thus, the drawer can be stably supported.

The drawer frame is provided with an engaging member protruding toward a side wall of the storage compartment, and a transmission member protruding from the side wall of the storage compartment toward the draw frame to push the engaging member from the rear of the engaging member is formed . That is, the transmitting member may be provided to move back and forth.

And an electric driving part that moves the latching member through the movement of the transmitting member and moves the drawer forward from the initial position to an operation position spaced apart by a predetermined distance. That is, the transmission member can be moved back and forth by driving the electric drive unit.

Such forward and backward movement of the transmitting member can be interfered by the front rail bracket and the rear rail bracket. Therefore, it is preferable that the transmitting member and the engaging member are provided so as to move between the front rail bracket and the rear rail bracket in a section between the initial position of the drawer and the operating position.

According to an aspect of the present invention, there is provided a cabinet comprising: a cabinet having a storage chamber; A door rotatably installed in the cabinet to open and close the storage compartment; A sensor for detecting opening of the door; A drawer frame movably installed in the storage room, the drawer frame including a basket for receiving stored contents, a rail coupling part, and a latching member protruding in the side wall direction of the storage room; A rail coupled to the rail coupling portion and supporting the drawer to be movable back and forth with respect to the storage chamber and supported on a side wall side of the storage chamber through a front rail bracket and a rear rail bracket; And a transfer member protruding from the side wall of the storage compartment toward the draw frame. When the opening of the door is sensed, the latch member is moved through the movement of the transfer member to move the drawer forward from the initial position And an electric driving part for moving the driving member to an operating position spaced apart by a predetermined distance, wherein the transmitting member is provided with an interval between the initial position of the drawer and the operating position, in order to avoid interference between the front rail bracket and the rear rail bracket The front rail bracket and the rear rail bracket are provided to be movable between the front rail bracket and the rear rail bracket.

According to an aspect of the present invention, there is provided a cabinet comprising: a cabinet having a storage chamber; A door rotatably installed in the cabinet to open and close the storage compartment; A drawer provided in the storage chamber and including a latching member; A sensor for detecting opening of the door; And a moving assembly coupled to the drawer to support the drawer to move back and forth with respect to the storage compartment and integrally coupled to and separated from the right or left side wall of the storage compartment.

The moving assembly comprising: a support frame adapted to engage the side wall; A motor assembly mounted on an inner surface of the support frame facing the side wall; A rail mounted on an outer surface of the support frame to support the drawer so as to be movable forward and backward; And a transmission member mounted on the support frame to move back and forth by driving the motor assembly in a space between the side wall and the support frame, the transmission member being configured to penetrate the support frame to push the engagement member from the rear side Frame. Therefore, the support frame, the motor assembly, the rails, and the entire moving frame can be integrally detachably installed on the side wall through the support frame.

The side wall is a partition for partitioning the storage compartment from the left and the right, and the moving assembly may be mounted on at least one of a left side surface and a right side surface of the side wall.

The partition may be formed with a penetrating portion through which at least a part of the motor assembly is inserted.

When the moving assemblies are mounted on the left and right sides of the partition, the through-holes are formed so that the motor assembly on the one side and the motor assembly on the other side penetrate through the through-holes, respectively. Therefore, it is possible to prevent the thickness of the partition wall from becoming large due to the motor assembly. This means that the reduction of the storage space due to the increase in the thickness of the partition wall can be prevented.

Preferably, the support frame is provided to cover the penetration part when the support frame is engaged with the partition wall.

The partition may be provided with an opening for extending the electric wire through the inside of the partition.

Preferably, the partition has a wire penetrating portion for extending the electric wire to the motor assembly, and a wire connecting portion or a wire connecting portion for connecting the motor assembly to the electric wire is provided at a distal end of the electric wire.

Therefore, after the motor assembly is connected through the wire coupling portion, the moving assembly can be integrally coupled to the side wall or the partition wall. Conversely, after the moving assembly is detached integrally from the side wall or the partition, the connection of the motor assembly can be separated through the wire coupling part. Thereafter, the moving assembly can be completely separated from the side wall or the partition.

A plurality of fastening portions may be formed on the support frame, and a plurality of fastening portions corresponding to the support portions of the support frame may be formed on the side walls.

The support frame may be formed with a motor avoidance groove that at least partially accommodates the motor of the motor assembly. The thickness of the entire partition wall can be increased through the motor avoidance groove or the volume of the entire support frame projecting into the storage chamber can be prevented from increasing. This means that the reduction of the space of the storage chamber can be minimized.

A plurality of the drawers are vertically provided to support a plurality of rails, and the motor avoidance grooves are formed between a specific rail and a rail positioned on an upper side or a lower side of the specific rail, desirable.

The supporting frame may be provided with a slit formed in the front and back to guide the movement of the transmitting member, and the transmitting member may penetrate the slit from the inside to the outside of the supporting frame.

The rail is mounted to the support frame through a front rail bracket and a rear rail bracket, and the slit is formed between the front rail bracket and the rear rail bracket.

Wherein the moving assembly includes a drawer holder that elastically deforms when the drawer is pulled out and provides an elastic restoring force to the drawer when the drawer is pulled in, the drawer holder being mounted on an outer surface of the support frame .

The drawer holder includes: a housing having a slot formed in the longitudinal direction and having a spring; And a hook member moving along the slot to generate elastic deformation and elastic restoration of the spring and selectively connected to the drawer.

The drawer comprising: a basket for receiving the storage; And a rail coupling portion that is seated on the lower portion of the rail and is formed in a channel shape to surround the rail.

And a rear end of the rail is formed with a latching portion for receiving the rear end of the rail coupling portion and an elastic protrusion inserted into a mounting hole provided at a front end of the rail coupling portion is formed in front of the rail.

Preferably, the drawer includes a basket seat on which the basket is placed, and a draw frame having the rail coupling portion.

Preferably, the latching member is formed to protrude from the drawer frame toward a side wall of the storage chamber.

According to an aspect of the present invention, there is provided a cabinet comprising: a cabinet having a storage chamber; A door rotatably installed in the cabinet to open and close the storage compartment; A drawer provided in the storage chamber and including a latching member; A sensor for detecting opening of the door; And a moving assembly coupled to the drawer to support the drawer so as to be movable forward and backward with respect to the storage chamber and integrally coupled to and separated from the right or left side wall of the storage chamber, A support frame provided to be coupled to the side wall, the support frame having a front and rear slit; A motor assembly mounted on an inner surface of the support frame facing the side wall; A rail mounted on an outer surface of the support frame to support the drawer so as to be movable forward and backward; And a transmission member mounted on the support frame so as to be moved back and forth by driving the motor assembly in a space between the side wall and the support frame, the transmission member passing through the slit and pushing the engagement member from the rear side, A refrigerator may be provided.

Preferably, the partition wall has a wire penetrating portion for extending the electric wire to the motor assembly, and a wire connecting portion for connecting the motor assembly to the electric wire is provided at the end of the electric wire.

In order to achieve the above object, according to an embodiment of the present invention, there is provided a refrigerator including a motor, a drawer provided in a storage room provided in a cabinet, the drawer being movable back and forth, The method of claim 1, further comprising the steps of: determining a condition for automatically withdrawing the drawer in a waiting state; A drawing step of driving the motor in one direction to move the transmission member forward to perform the draw-out to the operating position when the condition is satisfied in the determining step; A stopping step of stopping the drawing of the drawer by maintaining unidirectional driving of the motor after the drawing step; And a returning step of returning the transmitting member to the rear by driving the motor in the reverse direction after the stopping step.

In the stopping step, the drawer is stopped at the operating position. However, the one-directional drive of the motor is maintained. That is, the pushing force of the drawer is maintained. That is, the drawer can be prevented from being automatically drawn in a state where the one-directional driving of the motor is maintained. In other words, it is possible to prevent the drawer from being automatically drawn in even when the drawer is automatically drawn out to the operating position and the user tries to further draw the drawer.

And an initial step of moving the transfer member to the initial position by driving the motor in a reverse direction to start the standby state when power is applied to the refrigerator. That is, the initialization step is preferably performed. This is because the transmitting member may be located at a position other than the initial position in a state where the refrigerator is provided to the user.

In the initial stage, the motor is preferably driven in a reverse direction until a signal is generated in the first hall sensor for sensing the initial position or until a predetermined time is reached.

When the driving of the motor is stopped in the initial stage, a waiting state for performing the determining step is preferably started.

It is preferable that in the initial stage, a notification step is performed to notify that the operation is abnormal when a signal is generated in the second hall sensor for sensing the operation position or when the motor is driven until the predetermined time is reached.

In the drawing step, the motor is preferably driven until a signal is generated in the second hall sensor for sensing the operating position or until the predetermined time is reached.

The motor is a BLDC (Brushless DC) motor. In the drawing, a signal (FG, Frequency Generator) generated during rotation of the motor is calculated and a duty ratio for driving the motor is varied according to the calculated FG A control box is preferable. The calculation of the FG is preferably performed every predetermined time. For example, every 100 ms (milliseconds). It is preferable that the duty ratio is controlled to be larger as the calculated FG is larger.

If the calculated FG is smaller than the obstacle FG corresponding to the obstacle obstructing the drawing of the drawer during the drawing step, the stopping step is not performed and the returning step is performed.

In the taking-out step, it is preferable that the notification step is performed to notify that the operation is abnormal when the signal is generated in the first hall sensor for sensing the initial position or when the motor is driven until the predetermined time is reached .

Preferably, the stopping step is performed for a predetermined time with a minimum duty ratio of the duty ratio for driving the motor.

The FG is calculated in the stopping step, and when the FG calculated during the stopping step is smaller than the predetermined FG, the returning step is preferably performed.

Preferably, the returning step includes stopping the driving of the motor for a predetermined time.

In the returning step, the motor is preferably driven in a reverse direction until a signal is generated in the first hall sensor for sensing the initial position or until a predetermined time is reached, so that the driving of the motor is stopped.

In the returning step, when the signal is generated in the second hall sensor for sensing the operation position or when the motor is driven until the predetermined time, the notification step is performed to notify that the operation is abnormal.

It is preferable that the driving of the motor is stopped to switch to the standby state.

Wherein the refrigerator includes a door for opening and closing the storage room and a sensor for detecting opening of the door when the opening angle of the door is a predetermined opening angle, It is preferable to include the generation of a signal.

Wherein the refrigerator includes a door switch for sensing whether the door is opened or closed through contact between the door and the cabinet,

Preferably, the condition for automatically withdrawing the drawer further includes door opening detection through the door switch.

If the closing of the door is detected through the sensor during the drawing or stopping step, an emergency returning step is performed to stop the drawing-out step or the stopping step and drive the motor in the reverse direction to return the transmitting member backward .

When the motor is driven in one direction at the start of the emergency return step, it is preferable to stop the driving of the motor for a predetermined time and then to drive the motor in the reverse direction.

The features of each of the above-described embodiments may be implemented in combination in other embodiments.

According to an embodiment of the present invention, when the user opens the door of the refrigerator, the drawer provided in the storage room can be automatically drawn forward by a predetermined length. That is, it is possible to provide a refrigerator in which the drawer automatically moves from the initial position to the operating position.

According to an embodiment of the present invention, the drawer can be automatically moved from the initial position to the operating position through the electric drive unit, thereby providing a refrigerator in which the user does not need to apply additional force other than the force to open the door .

According to an embodiment of the present invention, it is possible to provide a refrigerator which can automatically return the drawer from the operating position to the initial position when the user closes the door of the refrigerator. That is, it is possible to provide a refrigerator which can reduce the labor of the user who draws the drawer from the initial position to the operation position, and reduce the labor of the user who draws the drawer from the operation position to the initial position.

According to an embodiment of the present invention, the drawer can be automatically drawn out by the operation of the electric drive part, and the drawer can be automatically drawn by the elastic restoring force of the spring.

According to an embodiment of the present invention, it is possible to provide a refrigerator capable of remarkably reducing interference between drawers that automatically move when a door is opened or closed through a sensor that detects a door opening (closing) angle with high accuracy. That is, when the door opening (closing) angle at which interference between the door and the drawer is minimized, it is possible to provide a refrigerator which can sense door opening (closing) very accurately at the set angle.

According to an embodiment of the present invention, it is possible to provide a door openness sensor and a refrigerator including the same that can flexibly cope with a change of a predetermined door opening angle according to a product model.

According to an embodiment of the present invention, there is provided a refrigerator which can be easily applied to a conventional refrigerator and can be detected when the door is opened and the door is closed through the same sensor.

According to an embodiment of the present invention, it is possible to provide a refrigerator having an interior design that can protect the electric drive unit and is easy to use and beautiful, by preventing the configuration for automatically drawing the drawer from being exposed to the inside of the storage room have.

According to an embodiment of the present invention, it is possible to provide a refrigerator capable of moving a plurality of drawers from an initial position to an operation position substantially simultaneously through one electric driving unit.

According to an embodiment of the present invention, it is possible to provide a refrigerator in which automatic drawing and drawing of a drawer can be performed with reliability and durability. In particular, it is possible to provide a refrigerator which can minimize damage to the electric drive unit due to overload of the electric drive unit or repeated use for a long time.

A refrigerator which can be easily assembled and easily repaired when necessary, such as a drawer to be automatically drawn out and an electric driver for automatically drawing a drawer through an embodiment of the present invention, Can be provided.

According to an embodiment of the present invention, it is possible to provide a refrigerator which can automatically draw out a plurality of drawers integrally, and is easy to manufacture and maintain.

According to an embodiment of the present invention, it is possible to provide a refrigerator which can easily connect and detach the drawer to a rail supporting a drawer.

According to an embodiment of the present invention, it is possible to provide a refrigerator which can easily separate and combine only a basket for storing food in a drawer. That is, it is possible to provide a refrigerator in which only the basket can be easily separated and rejoined while maintaining the connection between the rails and the rail connection portions of the drawers.

According to an embodiment of the present invention, it is possible to provide a refrigerator which can minimize the visible exposure of a rail to a user.

According to an embodiment of the present invention, it is possible to provide a control method of a refrigerator that minimizes a load of a motor and can flexibly respond to various conditions of use of a drawer.

1 is a front view of a refrigerator according to an embodiment of the present invention,
Figure 2 shows the lower storage compartment of the refrigerator shown in Figure 1,
FIG. 3 shows an embodiment of the sensor shown in FIG. 2 and the mounting of the sensor,
Fig. 4 shows another embodiment of the sensor shown in Fig. 2 and a mounting view of the sensor,
Figure 5 shows an exploded view of the side wall and moving assembly shown in Figure 2,
Fig. 6 shows a view of the moving assembly shown in Fig. 5, in which the rails and drawer holders are mounted on the support frame,
Figure 7 shows the initial position of the motor assembly and the moving frame in the moving assembly shown in Figure 5,
Figure 8 shows the operating position of the motor assembly and the moving frame in the moving assembly shown in Figure 5,
Figure 9 shows an enlarged cross-section of the connection of the drawer and the moving assembly,
Figure 10 shows a side view of the drawer, particularly the connecting portion of the drawer frame and the moving assembly,
11 shows the connection relationship between the drawer and the drawer holder according to the drawing distance of the drawer,
Figure 12 shows another embodiment of a moving assembly,
Fig. 13 shows the position and the connection relationship of the catching member of the drawer, the hooking member of the drawer holder, and the transmitting member in the operating position in the embodiment shown in Fig. 12,
14 shows the position and the connection relationship of the engaging member, the hook member, and the transmitting member in a state in which the drawer is further drawn out from the operating position in the embodiment shown in Fig. 12,
Figure 15 illustrates a drawer applicable to an embodiment of the present invention;
Figure 16 shows a rail that can be applied to an embodiment of the present invention,
Fig. 17 shows a state in which the drawer shown in Fig. 15 is engaged with the rail shown in Fig. 16,
Fig. 18 shows the front end of the drawer shown in Fig. 15 combined with the front end of the rail shown in Fig. 16,
19 is a block diagram of a control configuration that may be applied to an embodiment of the present invention,
20 to 26 are flowcharts for respective steps in a control method that can be applied to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 shows a front view of a refrigerator 1 according to an embodiment of the present invention. There is shown an example of a four-door refrigerator having a refrigerating chamber 11 at the top and freezing chambers 12 and 13 at the bottom. For the sake of convenience, the left and right doors of the upper refrigerator compartment are omitted, and the left door of the lower freezer compartment is omitted, and only the right door 20 of the lower freezer compartment is shown. Of course, the present embodiment is applicable not only to this type of refrigerator but also to a side-by-side refrigerator. That is, the present embodiment can be applied to a refrigerator having a door for opening and closing the storage chamber and a drawer for moving the storage chamber back and forth.

The refrigerator includes a cabinet 10 having storage rooms 11, 12 and 13 and a door 20 rotatably installed in the cabinet and opening and closing the storage room. As described above, if there are a plurality of storage rooms, a plurality of doors may be provided correspondingly.

The refrigerating compartment 11 and the freezing compartments 12 and 13 may be partitioned from each other through a horizontal partition 14. The left freezer compartment 12 and the right freezer compartment 13 may be separated from each other through separate side walls or partitions 16. [ The barrier ribs 16 may be referred to as vertical barrier ribs for the sake of convenience. The refrigerator compartment 11, the left freezer compartment 12, and the right freezer compartment 13 may be opened and closed by individual doors, respectively.

A drawer 30 may be provided in the storage rooms 11, 12 and 13, and in particular, the freezing compartments 12 and 13, including a basket 31 for storing stored contents. A plurality of the drawers 30 may be provided up and down. FIG. 1 shows an example in which three drawers 30a, 30b and 30c are provided in the right and left freezers, respectively. Of course, this embodiment can be applied to a case where a drawer is provided in a freezer compartment as well as a freezer compartment. In addition, one or two drawers can be automatically interlocked with a single door, and it is also possible to have four or more drawers automatically interlock with one door.

The present embodiment is intended to provide a refrigerator in which the drawer 30 can be automatically moved for the sake of the user in cooperation with the opening and / or opening / closing of the door 20. For example, it is possible to provide a refrigerator in which the drawer 30 provided in the right freezer compartment 13 can be automatically moved as the right freezer compartment 13 is opened or closed through the door 20. Of course, such automatic movement of the drawer can be applied to either of the two freezing chambers 12, 13, or to both of them. In addition, it can be applied to a refrigerator other than a freezer.

FIG. 2 shows only the lower freezing compartments 12 and 13 in the refrigerator shown in FIG. 1. The left freezing compartment door is in a closed state, and the right freezing compartment door 20 is in an open state.

As shown in the drawing, the drawer 30 provided in the left freezer compartment may be further inserted into the storage compartment than the drawer provided in the right freezer compartment. 2, the position of the drawer 30 provided in the left freezer compartment may be referred to as an initial position and the position of the drawer 30 provided in the right freezer compartment may be referred to as an operating position.

In other words, the drawer 30 in a state in which the door 20 is closed is located at the initial position, and the drawer 30 in the state in which the door 20 is opened can be said to be located at the operating position .

As described above, a storage box or basket 25 is provided on the rear surface of the door 20, and a separate door storage area 21 can be formed through the storage box or the basket 25. In order to eliminate the interference between the basket (25) provided on the door (20), especially the door, and the drawer (30), the drawer is pulled to the initial position in a state where the door (20) is closed. When the user opens the door 20 to withdraw the stored product, the drawer 30 is moved from the initial position to the forwardly moved operating position so that the user can more easily draw the drawer. Therefore, since the front end of the drawer or the handle 35 is moved to a position closer to the user, the user can more easily draw the drawer.

That is, the initial position may be a draw position in a state where the drawer is substantially moved to the inside of the storeroom, and the operation position may be a position spaced a predetermined distance forward from the initial position. In this operating position, the user can operate the drawer 30 very conveniently because he or she does not need to put his / her hand deep into the storage room to hold the handle 35. [ On the other hand, the operation position may be referred to as a standby position. This is because, on the drawer side, it may be a position waiting for user's operation.

As shown in Fig. 2, it is preferable that the drawer 30 does not depart from the opening 17 of the storage chamber even in the operating position. That is, even if the door 20 is opened, it is preferable that the front end of the drawer 30, particularly the drawer, or the handle 35 is positioned behind the opening 17. That is, it is preferable that the drawer 30 is still positioned inside the storage chamber. This is because opening the door 20 by the user may not necessarily be intended for use or withdrawal of the drawer 30. [ For example, the door 20 may be opened to use the door storage area 21. Further, when there are a plurality of drawers 30, drawers 30 which are not drawn out can be taken out of the storeroom only because specific drawers can be taken out, which causes only cold loss.

As will be described later, the embodiments of the present invention can provide a refrigerator in which the drawer is automatically moved according to the door opening manner of the user, in particular, the door opening angle. This prevents unnecessary movement of the drawer, thereby reducing cold loss and energy loss. In addition, it is possible to provide a refrigerator in which the interference between the drawer and the door can be minimized.

Also, when the door is opened, the cold air in the storage room is basically lost. As the drawer is drawn, the cold air inside the drawer's basket is also lost. That is, as the draw-out length of the drawer increases, the loss of cold air in the basket accelerates, and the loss of cold air can be further accelerated, especially when the drawer is drawn further forward than the opening. Therefore, in order to minimize the loss of cold air inside the basket at the operating position, it is preferable that the drawer (30) does not escape from the inside of the storage chamber even at the operating position of the drawer.

The operating position may be, for example, a position shifted approximately 120 mm forward from the initial position. Of course, the interval between the operation position and the initial position may be set differently depending on the shape of the refrigerator, the position of the drawer, the distance the door 21 is drawn into the storage compartment, and the capacity of the refrigerator. However, it is preferable that the operating position is a position where the front end of the drawer or the handle 35 does not come out of the opening 17 of the storage room. That is, it is preferable that the front end portion or the handle is located inside the opening portion without leaving the opening portion.

The present embodiment relates to a refrigerator in which a drawer provided in the storage compartment is automatically moved (drawn out) from an initial position to an operating position when the door 20 for opening and closing the storage compartment is opened. Accordingly, the refrigerator according to the present embodiment includes a motor drive unit 150 (see FIG. 5) for moving the drawer and includes a sensor 40 (see FIG. 3) for sensing the condition of driving the motorized drive unit desirable.

Specifically, the sensor 40 is provided to detect the opening of the door 20, and when the sensor 40 senses the opening of the door 20, the electric driving unit 10 operates, The lower lever 30 is moved from the initial position to the operating position.

The door 20 may be a swing-type door that is opened and closed by rotating about a vertical axis. That is, if the state in which the door 20 completely closes the opening 17 is defined as a 0 degree angle, the door 20 can be opened and rotated by more than 90 degrees.

Here, even when the door 20 slightly deviates from the opening 17, it can be said that the door is open when viewed from a wide angle. For example, when the close contact between the door 20 and the opening 17 is released, it can be said that the door is opened. More specifically, as shown in FIG. 2, when the close contact between the gasket 22 and the cabinet 10 provided on the rear surface of the door 20 is released, the door 20 is opened. Therefore, in such a state, cold air loss can inevitably occur.

In order to detect whether the door 20 and the cabinet 10 are in close contact with each other, a door switch described later may be provided. The door switch may be interlocked with the operation of the illumination device provided in the storage compartment. That is, when it is determined that the close contact between the door 20 and the cabinet 10 is released through the door switch, the lighting device can be controlled to be turned on. If the door 20 is closely contacted with the cabinet 10 through the door switch after the illumination device is turned on, the illumination device can be controlled to be large. Therefore, the door switch senses whether the door is opened or closed through a relatively small opening angle. Generally, such a door switch can be formed to have a structure of swinging mechanically according to the distance between the door and the cabinet.

Details of the door switch and the lighting device will be described later.

However, the opening of the door in the present embodiment can be said to be the draw-out of the drawer as described above. That is, when the user opens the door 20 on the assumption that the drawer is drawn out and used, it is preferable that the drawer is moved to the operating position. Therefore, it can be said that the opening angle of the door for sensing the opening of the door is very important. In addition, the opening angle of the door for draw-out is relatively larger than the opening angle of the door detected by the door switch described above.

For example, when the user intends to draw out only the stored contents stored in the door storage area 21 on the rear side of the door 20, the door can be opened only at an angle of 40 to 50 degrees. In this case, the drawer would preferably be in the initial position state continuously. Of course, in the door switch, it can be said that the door is determined to be opened.

When a user tries to draw and use a drawer, he or she generally knows that the user must open the door 90 degrees or more. This is because, at the door opening angle of 90 degrees or less, the drawer is caught on the basket 25 on the rear side of the door before the drawer is completely drawn out. In order for the drawer to be fully withdrawn without interference with the door, it is common for the door to be opened, for example by more than 100 degrees.

Therefore, it is preferable that the opening angle of the door for automatically moving the drawer is substantially 80 degrees or more, more preferably approximately 90 degrees or so. That is, it is preferable that the opening of the door is sensed at such an angle so that the electric drive unit is driven. This is because it takes a certain time for the drawer to move to the operating position. That is, the angle at which the opening of the door is sensed is preferably smaller than the opening angle of the door in which the interference between the drawer and the door is completely excluded. Of course, it is preferable that the angle at which the opening of the door is sensed and the drawer starts to automatically move is determined so that the drawers at the door and the operating position do not interfere with each other.

The opening angle of the door for automatically moving the drawer may be an angle that does not interfere with the rear basket 25 of the door when the drawer is drawn to the operating position. As shown in FIG. 2, the basket 25 may protrude in a direction perpendicular to the rear surface of the door. Therefore, when the door is opened at 90 degrees, the basket 25 is located at a position out of the opening 17. [ This means that the drawer 30 is not interfered with the basket 25 until the drawer is drawn to the opening 17. Of course, interference between the drawer 30 and the basket 25 may occur if the drawer is further drawn out with the door 90 degrees open. Therefore, it has been described that the opening angle of the door must be further increased in order to fully draw the drawer.

For this reason, it is preferable that the sensor 40 is a sensor capable of accurately sensing a predetermined door opening angle for drawing out the door 20. To this end, the sensor 40 preferably includes a magnet 42 and a reed switch 41. Of course, only the reed switch 41 may be referred to as a sensor, and the reed switch may detect the predetermined door opening angle through the magnet 42. [

As the distance between the reed switch 41 and the magnet 42 varies, the magnetic force applied to the reed switch varies. That is, the specific distance between the reed switch 41 and the magnet 42, that is, the distance at which the contact point of the reed switch 41 is changed, can be estimated relatively accurately by changing the magnetic force of the magnet 42 itself.

Fig. 3 shows the positional relationship between the reed switch 41 and the magnet 42 in an embodiment of the sensor 40. Fig. 3, the door 20 is opened at an angle of 90 degrees. That is, the door 20 is rotated 90 degrees with respect to the hinge cover 45 located near the leg 2 fixed to the ground. 3 is a view from the ground toward the upper part.

The reed switch may be located in the hinge cover 45 and the magnet 42 may be provided under the door 20. Specifically, the magnet 42 may be provided on the cab decor 24 of the door 20. Of course, the reed switch can be placed on the door 20, and the magnet 42 can be placed on the hinge cover. However, it is preferable that the reed switch is located in the fixed configuration, that is, the hinge cover 45, because the contact is formed and the configuration for transferring the door open signal or the closing signal to the outside is the reed switch.

The vertical separation distance between the reed switch 41 and the magnet 42 is the same regardless of the opening angle of the door 20 because the door 20 rotates with respect to the hinge shaft 23, However, as the opening angle of the door 20 changes, the horizontal distance between the reed switch 41 and the magnet 42 varies. That is, the magnet 42 rotates with the same radius with respect to the hinge shaft 23, and the horizontal distance from the magnet 42 is different according to the rotation angle at this time.

When the door 20 is closed, the magnet 42 is positioned near the reed switch 41. Therefore, when the door 20 is closed, the magnetic force of the magnet 42 can affect the reed switch 41. [ As the opening angle of the door 20 is increased, the magnet 42 moves away from the reed switch after approaching the reed switch at the maximum. That is, as the opening angle of the door 20 becomes larger, the magnetic force of the magnet 42 does not affect the reed switch 42. Therefore, for example, when the opening angle of the door 20 reaches an angle of 90 degrees, the contact of the reed switch 41 can be changed. The change of the contact of the reed switch 41 can be regarded as the generation of the door open-on signal. That is, when the door is opened up to a predetermined angle, it is possible to detect the door opening. In other words, the magnetic force of the magnet 42 affects the reed switch 42 when the door 20 is closed and less than the opening angle (for example, 90 degrees), so that the contact of the reed switch 41 When the opening angle is reached, the magnetic force of the magnet 42 no longer affects the reed switch 42, and the contact of the reed switch 41 is changed.

In other words, when the opening angle of the door reaches a predetermined opening angle, the reed switch has a critical point of effective magnetic force for switching the contact. That is, the contact point of the reed switch is switched to the critical point, which means that the door is detected to be opened.

Therefore, by implementing the sensor that senses the opening of the door through the reed switch 41 and the magnet 42, it becomes possible to generate the door open-on signal at a desired door opening angle (predetermined angle).

As described above, when the door is opened and reaches the door opening angle, the magnetic force of the magnet 42 does not affect the reed switch 41. That is, it is out of the critical point. On the contrary, this means that the magnetic force of the magnet 42 affects the reed switch 41 when the door is opened at the door opening angle when the door is closed with the door exceeding the door opening angle. Accordingly, the door opening angle for detecting the opening of the door and the door closing angle for detecting the closing of the door can be set to be the same. Further, it is possible to detect the opening of the door and the closing of the door through the same angle through one sensor 40.

In other words, the sensor 40 can perform door opening detection and door closing detection through the same angle. For example, the detection of the same angle after the door opening is detected at the same angle can be called door closing detection. Also, the same angle after door closing detection can be called door opening detection.

This is because, as described above, the interference between the door and the drawer needs to be eliminated not only when the door is opened but also when the door is closed. That is, even when the drawer is automatically drawn in, as will be described later, it can be said that the drawer is automatically drawn in before the door is interfered with the drawer.

However, when one magnet 42 is used as shown in FIG. 3, there may arise a problem that a deviation of an opening angle of a predetermined door for each product occurs. For example, when one magnet 42 and the reed switch 41 are mounted by setting the opening angle of the door to 90 degrees, a deviation of the door opening angle may be generated for each product. That is, some products detect an 85 degree opening angle, some products have a 90 degree angle, and some products have a 95 degree opening angle. Such a deviation may be caused by various causes such as magnetic force deviation of the magnet 42, mounting deviation of the magnet 42 and the lease switch 41, and the like.

Further, when one magnet 42 is used, it is not easy to change the opening angle of the door. This is because an open angle of 90 degrees is preferred for certain models by product model, while an open angle of 85 degrees may be preferred for other specific models.

Therefore, it is desirable to provide the sensor 40 that can change the opening angle of the door flexibly while reducing the variation in the opening angle of the predetermined door. The present applicant intends to provide a sensor 40 using a plurality of magnets in order to solve the problem of the sensor 40 implemented through one magnet 42. [

Hereinafter, another embodiment of the sensor 40 will be described in detail with reference to FIG. Basically, this embodiment is very similar to the above-described embodiment. However, in the present embodiment, a plurality of magnets may be provided unlike the above-described embodiments.

Also in this embodiment, the reed switch is located in the hinge cover 45, and the plurality of magnets 42 can be provided in the cab deco 24 of the door 20. The cab deco 24 may be configured to form a lower surface of the door 20. [ Accordingly, the magnet 42 is positioned inside the door 20. [

The reed switch 41 may be fixed to the cabinet 10. For example, the hinge cover 45 may be provided on the front of the cabinet 10. The door 20, particularly the cab deco 24, is opened and closed with respect to the hinge shaft 23 with a predetermined gap therebetween at the upper portion of the hinge cover 45.

The magnet 42 may include a horizontal magnet 42a and a vertical magnet 42b. The horizontal magnet 42a is a magnet arranged parallel to the front surface of the door 20 or the front surface of the cabinet 10. The vertical magnet 42b is a magnet positioned substantially perpendicular to the horizontal magnet 42a can do.

In a state in which the door 20 is closed, the horizontal magnet 42a may be positioned to be parallel to one surface of the reed switch 41. [ The reed switch 41 may be formed in a rectangular shape, and the horizontal magnet 42a may be positioned to be parallel to the roadside of the reed switch 41. The vertical magnet 42b may be positioned so as to be parallel to the longitudinal side of the reed switch 41. The lateral side of the reed switch may be larger than the longitudinal side of the reed switch.

The horizontal magnet 42a and the vertical magnet 42b are bar-shaped magnets, and may be formed to have a length greater than the height of the vertical cross section shown in FIG.

In a state in which the door 40 is closed, the horizontal magnet 42a may be positioned in a shape elongated from the rear of the reed switch 41 to the left and right. The vertical magnet 42b may be positioned in the form of elongated back and forth from the left or right side of the reed switch. In other words, the two magnets 42a and 42b may be spaced apart from each other and may be positioned to surround the reed switch 41. Therefore, the horizontal magnet and the vertical magnet may be provided with different horizontal angles with respect to the reed switch.

Therefore, when the door 20 is closed, the two magnets 42a and 42b simultaneously provide effective magnetic force to the reed switch 41. [

The distance between the horizontal magnet 42a and the hinge axis 23 is smaller than the distance between the vertical magnet 42b and the hinge axis 24. [ That is, the turning radius of the horizontal magnet 42a is smaller than the turning radius of the vertical magnet 42b. The distance between the reed switch 41 and the hinge shaft 24 may be set to be similar to the radius of rotation of the horizontal magnet 42a.

The horizontal magnet 42a is rotated near the reed switch 41 as the door 20 is opened and the vertical magnet 42b is relatively rotated at a position distant from the reed switch 41. [ . This means that the area in which the horizontal magnet 42a can overlap with the reed switch 41 is relatively large.

Therefore, the magnetic force sensed by the reed switch 41 is basically the magnetic force generated by the horizontal magnet 42a, and the magnetic force generated from the vertical magnet 42b is also adversely affected by the reed switch 41 I am crazy.

Assuming that the magnitude of the magnetic force is inversely proportional to the square of the distance, the magnitude of the magnetic force becomes very small as the position of the magnet 42a in the reed switch 41 becomes farther away. This means that even if the magnet moves in a very short interval, a very large magnitude of magnetic force can be generated. For this reason, it is very difficult to precisely set the critical point at which the magnetic force does not affect the position of the influence of the magnetic force, that is, the door opening angle. In other words, when only one magnet, for example, the horizontal magnet 42a is provided, a sudden change in the magnetic field strength occurs before and after the critical point, so that it becomes difficult to set the critical point.

In this embodiment, the change of the magnetic force intensity gradually progresses to the critical point through the vertical magnet 42b, and the change of the magnetic force intensity rapidly occurs after the critical point. That is, since the vertical magnet 42b continuously supplies the auxiliary magnetic force until reaching the critical point, the rapid magnetic force change to the critical point can be restricted.

 According to the present embodiment, the critical point, that is, the opening angle of the door can be easily set to about 90 degrees. That is, it is possible to easily adjust the opening angle of the door detected by the reed switch 41.

Specifically, the position of the vertical magnet 42b can move the horizontal magnet 42a shown in FIG. 4 back and forth in a fixed state. That is, the vertical magnet 42b is a fixed magnet and the horizontal magnet 42a is a variable magnet.

When the horizontal magnet 42a is moved backward, the distance between the horizontal magnet 42a and the hinge shaft 23 is reduced. In other words, the distance between the horizontal magnet 42a and the reed switch 41 becomes smaller with the reference shown in Fig. 4 (i.e., when the door is opened at 90 degrees). Therefore, the door 20 must be further opened to eliminate the influence of the magnetic force applied to the reed switch 41 by the horizontal magnet 42a. That is, the horizontal magnet 42a can be horizontally moved close to the hinge shaft 23 in order to set the door opening angle exceeding 90 degrees.

Conversely, the horizontal magnet 42a can be moved forward. That is, it can be horizontally moved away from the hinge shaft 23. In this case, the distance between the horizontal magnet 42a and the reed switch 41 is increased. Therefore, the influence of the horizontal magnet 42a can be eliminated in a state where the door opening angle is smaller than 90 degrees.

As a result, it is possible to flexibly set the door opening angle through the fixed magnet 42b, which is the auxiliary magnet, and the variable magnet 42a, which is the main magnet.

On the other hand, in the embodiment of the sensor 40 described above, an example in which a reed switch is provided under the magnet has been described. However, on the contrary, a reed switch may be provided on the magnet. For example, a magnet may be provided on the door decors forming the upper surface of the door 40, and a reed switch may be mounted on the door facing the door decor. In any case, the vertical distance between the magnet and the reed switch is fixed regardless of the opening angle of the door, and the horizontal distance between the reed switch and the magnet will vary as the door opening angle changes.

With this embodiment, it is possible to detect the opening of the door and the closing of the door at a predetermined door opening angle simply and accurately by using a relatively simple reed switch and a magnet. In addition, the door opening angle may be set to some extent depending on the model of the refrigerator. In this case, the position of any one of the plurality of magnets can be varied and applied flexibly.

As described above, when the opening of the door is sensed through the sensor 40, the drawer 30 is moved from the initial position to the operating position. Therefore, a structure for supporting the drawer 30 so as to be movable, and a structure or a structure for automatically moving the drawer 30 are required. Hereinafter, the moving assembly 100 for supporting the drawer and moving the drawer will be described in detail. Specific configurations of drawers associated with the moving assembly 100 will now be described in detail.

FIG. 5 shows a moving assembly 100 that can be coupled to the freezer compartment side wall of the refrigerator shown in FIG. Specifically, there is shown a moving assembly 100, which is positioned on either side of the partition wall 16, which is one of the side walls of the freezing chamber, and the left and right sides of the freezing chamber barrier wall 16, respectively. Of course, this is the case where the freezing compartments are respectively provided on the left and right sides of the freezing compartment partition wall 16. When the freezing compartment is one, the partition wall 16 may be a left side wall (left side wall) or a right side wall (right side wall) . When the freezing compartments are provided on the right and left sides of the partition wall 16, the moving assembly 100 may be installed in only one of the freezing compartments. In either case, the moving assembly 100 is preferably mounted on the side wall of the storage chamber.

However, when the right and left freezing chambers shown in Fig. 1 are divided, mounting the moving assembly 100 on the left side insulating wall or the right side insulating wall is very disadvantageous from the viewpoint of heat insulating performance. In the case where the conventional heat insulating wall thickness is maintained, the inner space of the storage compartment of the moving assembly 100 may be very small. Therefore, it is desirable to mount this moving assembly 100 on the freezer compartment wall 16 in which the heat insulating performance among the side walls of the freezing chamber is not prioritized.

The barrier ribs 16 may be symmetrically formed on both sides of the barrier ribs defining the left and right freezing chambers. That is, the same type of moving assemblies may be mounted on the right and left of the partition 16 in the same manner. Therefore, drawers that are automatically drawn out / drawn into the left and right freezers can be provided.

Hereinafter, embodiments in which the moving assembly 100 is mounted on the side walls forming the storage compartment, in particular, the left and right partition walls 16 partitioning the left and right storage compartments will be described in detail.

The moving assembly 100 serves to support the drawer 30 movably back and forth. Then, the drawers 30 form structures that can be automatically drawn out. In addition, the drawers 30 can form structures that can be automatically drawn in.

The moving assembly 100 preferably includes a support frame 110. The support frame 110 may be mounted on one side wall of the freezer compartment, particularly the partition wall 16. As described later, the support frame 110 may be provided with various components such as an electric drive unit, and the moving assembly 100 may be connected to the one side wall of the freezer chamber, Can be mounted on the partition 16 or can be separated from the partition 16. That is, the moving assembly 100 may be integrally coupled to the side wall of the storage chamber or may be separated from the side wall. Therefore, the manufacturing can be very simple, and maintenance can be performed very easily in the future. This is because, after the drawer 30 is separated from the rail 120, the entire moving assembly 100 including the support frame 110 can be separated from the partition 16, as will be described later . On the contrary, after all the moving assemblies are formed, they may be mounted on the partition wall 16, and then the drawers 30 may be coupled to the rails 120. Therefore, manufacturing and subsequent maintenance becomes very easy.

A rail 120 may be mounted on the support frame 110. The rails 120 may be provided so that drawers are moved back and forth in the storage chamber. That is, the drawer 30 can be supported so as to be movable back and forth in the storage chamber through the rail 120. The drawer 30 can be slid back and forth through the rail 120 and moved.

When there are a plurality of the drawers 30, a plurality of the rails 120 may be provided. Accordingly, a plurality of rails 120 can be mounted on the single support frame 110. Specifically, a plurality of rails 120 can be mounted vertically.

The support frame 110 is mounted on the partition wall 16 to form a predetermined space 130 between the partition wall 16 and the support frame 110. The predetermined space 130 is a space that is not exposed in the storage chamber. Therefore, the structure provided in the predetermined space 130 is not exposed to the inside of the storage chamber. For this reason, the predetermined space may be referred to as an isolation space, and it may be referred to as an electric drive unit mounting space for mounting the electric drive unit, as described later.

The predetermined space, the isolation space or the electric driving part mounting space 130 is provided between the inner side surface 112 of the support frame 110 and the partition wall 16, And is not exposed to the inside. On the other hand, configurations mounted on the outer surface 111 of the support frame 110 may be exposed to the inside of the storage chamber. For example, the rail 120 may be mounted on the outer side 111 of the support frame 110, so that the rail 120 may be exposed inside the storage chamber.

The motor driving unit 150 may be installed on the inner side surface 112 of the support frame 110. That is, the electric drive unit 150 may be located in the predetermined space 130. Accordingly, the electric drive unit 150 is not substantially exposed to the inside of the storage chamber. This is because the support frame 110 covers the electric drive part 150. [

Specifically, the electric driving part 150 may be mounted on the inner surface of the support frame 110, rather than the partition wall 16. That is, when the support frame 110 is separated from the partition wall 16, the electric drive part 150 may be separated from the partition wall 16.

The electric drive unit 150 may be configured to move the drawer 30 from the initial position to the operation position as the electric drive unit 150 is driven. The motor driving unit 150 includes a motor assembly 160 for generating a force for moving the drawer 30 and a moving frame 170 for applying a force to the drawer 30 to move the drawer 30 .

The moving frame 170 may be moved back and forth by driving the motor assembly 160. Here, the back and forth movement can be said to be the same direction as the back and forth movement of the drawer 30. That is, the moving frame 170 may be moved in the same direction as the moving direction of the drawer 30 by driving the motor assembly 160.

Specifically, the moving frame 170 may be movably mounted on the support frame 110. For example, the moving frame 170 may be mounted on the inner surface of the support frame 110 so as to be movable back and forth. Therefore, since the entire moving frame 170 is substantially located in the predetermined space 130, the entire moving frame 170 and the moving frame 170 can not be viewed inside the storage room. However, as described later, the movement of the moving frame 170 must be transmitted to the drawer 30 provided inside the storage chamber. Therefore, it is preferable that a configuration for transmitting the force, for example, a transmitting member described later, is exposed to the outer surface of the support frame 110.

Accordingly, the moving frame 170 may transmit the force of the motor assembly 160 located in the predetermined space 130 to the drawer 30 located outside the predetermined space 130.

Meanwhile, as shown in FIG. 5, a penetration portion 16a may be formed in the barrier rib 16. The penetration portion 16a may be formed to penetrate the motor assembly 160. The motor assembly 160 may have a predetermined left and right width based on the reference shown in FIG. Therefore, when the motor assembly 160 is placed in the predetermined space 130 and isolated from the storage room, the width of the partition wall 16 and the width of the support frame 110 may be excessively large. This means that the internal space of the storage compartment is narrowed. Therefore, the storage space can be prevented from being reduced due to the motor assembly 160 through the penetration portion 16a.

Particularly, when the moving assembly 100 is positioned at the left and right of the partition 16, a part of the left motor assembly (the motor assembly for moving the drawers of the left freezer compartment) And may be located in the predetermined space 130 on the right side. Conversely, a portion of the motor assembly on the right (motor assembly for moving the drawers of the right freezer compartment) may be positioned within the predetermined space 130 on the left through the penetrations 16a. In addition, the two motor assemblies 150 may be positioned vertically and horizontally. That is, the two motor assemblies 150 may be vertically and horizontally positioned so that the left and right widths are partially overlapped. This makes it possible to minimize the influence of the thickness due to the moving assembly, rather than when the two motor assemblies 150 are positioned side by side.

Here, the penetration portion 16a may be formed to correspond to the outer shape of the motor assembly 150. Therefore, the motor assembly 150 can be formed to be fixed and supported on the penetration portion 16a. When the motor assembly is provided on the right and left sides of the partition wall 16, the penetration portion 16a may be formed long up and down. The one side motor assembly passes through the upper side and the other side motor assembly passes through the lower side. That is, the two motor assemblies can be disposed up and down through the penetrating portion 16a. It is preferable that the penetration portion 16a is covered with the ground frame 110 as the support frame 110 is coupled to the partition wall 16. [

Meanwhile, the motor assembly 150 includes a motor 162 that operates through electrical energy. Therefore, electric wires for supplying electric energy should be connected to the motor assembly 150. That is, electric wires must be connected from the power supply unit (not shown) of the refrigerator to the motor assembly 150.

The partition 16 may have an upper opening 16b for connecting electric wires. The wires connected from the power supply may extend through the inside of the horizontal partition 14 shown in FIG. 1 to the upper opening 16b of the vertical partition 16. A wire penetration portion 16c may be formed in the horizontal partition 14. That is, the electric wire can further extend from the upper opening 16b to the electric wire penetration portion 16b. The wire 16d may extend further to the right from the wire penetration portion 16c and then be finished with the wire coupling portion 16e. The illustrated wire coupling portion 16e may be referred to as a wire coupling portion to be connected to the motor assembly 150 provided on the right side. Likewise, a wire and a wire coupling portion may be provided on the left side of the wire penetration portion 16c.

It is possible to extend the electric wire through the horizontal partition 14 and the vertical partition 16 before mounting the moving assembly 100 on the partition 16 so that the electric wire penetrates the electric wire penetration part 16c. And the wire connecting portion 16e can be formed at the end of the wire.

The wire connecting portion 16e is located within the predetermined space 130 described above. Therefore, before mounting the moving assembly 100 on the partition wall 14, the motor assembly 150 is first connected through the wire coupling portion 16e. The moving assembly 100 can be fixed to the partition wall 16 through the coupling part 115 formed on the support frame and the coupling part 16f formed on the partition wall 16. The fastening portions 115 and 16f may be formed in the shape of a boss for screw connection. Conversely, the screws may be removed to move the moving assembly 100 away from the partition 16. The moving assembly 100 can be completely separated from the partition 16 by removing the connection between the wire coupling portion 16e and the motor assembly 100. [ That is, the structural and electrical connection with the partition 16 can be eliminated.

Therefore, the moving assembly 100 can be easily coupled, disconnected, and connected through the structure of the partition 16, the structure of the moving assembly 100, and the connection structure of electric wires through the partition wall .

The motor assembly 100 includes a motor 162 as described above. Generally, the motor is formed into a cylindrical shape. The direction of the rotation axis of the motor may be perpendicular to the partition wall 16. Therefore, the lateral width of the motor assembly 100 can be increased due to the size of the motor itself (the height of the cylindrical motor).

As shown in FIG. 5, a motor avoidance groove 116 may be formed in the support frame 110. That is, a circular motor avoidance groove 116 may be formed depending on the shape of the motor. The motor avoidance groove 116 can accommodate at least a part of the motor. Therefore, it is possible to expand only the portion corresponding to the motor without increasing the width of the entire motor assembly 100. The motor escape groove 116 may be formed in the support frame 110 to prevent interference with the extended portion.

The motor escape groove 116 protrudes to the right with respect to the right support frame. There is a possibility that other structures mounted on the support frame may be interfered by the protruded motor avoidance groove 116. [ In order to prevent this, it is preferable that the motor avoidance groove 116 is formed at a position corresponding to the position between the rail 120 and the rail 120.

Assuming that three rails 120 are mounted on the support frame 110, the right support frame may have the motor avoidance groove 116 formed between the middle rail and the lower rail. Conversely, in the left support frame, the motor avoidance groove 116 may be formed between the upper rail and the intermediate rail.

Through the motor escape groove 116, the motor assembly 160 can be more firmly coupled to the support frame 110. In addition, by forming the motor avoidance groove 116 between the rail and the rail, it is possible to minimize the reduction of the storage space due to the entire expansion of the predetermined space 130 described above.

If the left and right widths of the entire motor assembly 100 are further increased in consideration of the size of the motor, for example, when the left and right widths of the entire housing 16 of the motor assembly are further increased, The space inside the storage compartment will be reduced in order to avoid interference between the rails.

Hereinafter, a structure for supporting the drawer and exerting a force on the drawer will be described in detail with reference to FIG. 6 shows a rail 120 corresponding to one drawer 30 in the support frame 110 and a structure for transmitting a force to the drawer 30.

Although not shown in FIG. 6, the drawer 30 is supported to be movable back and forth through the rail 120. Generally, a user pulls or pulls the drawer 30 by pulling or pushing the drawer 30. At this time, it is general that the rail 120 is provided so as to facilitate the pull-in and pull-out of the drawer while minimizing a necessary force. Therefore, the rail 120 can be mounted on the outer surface 111 of the support frame 110, that is, the surface facing the inside of the storage chamber.

As described above, the motor drive unit 150, particularly, the motor assembly 160 may be mounted on the inner surface 112 of the support frame 110. Here, the inner surface 112 may be a surface facing the side wall or the partition wall 16. Therefore, a structure for transmitting the force generated in the inner side surface portion 112 of the support frame to the outer side surface portion 111 of the support frame is required.

For this purpose, it is preferable that a slit 113 is formed in the support frame 110. That is, it is preferable that a slit passing through the support frame 110 is formed. It is possible to transmit the movement of the moving frame 170 to the drawer 30 through the slit 113.

Specifically, the moving frame 170 may include a transmitting member 171 for transmitting a force to the drawer 30. The transmitting member 171 may be provided to penetrate the slit 113. That is, a part of the moving frame, that is, the transmitting member 171, passes through the slit 113 and is supported by the supporting frame 171. In other words, substantially all of the moving frame 170 is moved at the inner side surface 112 of the supporting frame, So as to be moved on the outer side surface 111 of the frame. Accordingly, the transmitting member 171 moves forward and backward along the slit 113. As shown in FIG.

The transfer member 171 performs a function of transferring the force of the electric driving unit, particularly, the movement of the moving frame 170 to the drawer 30. [ That is, the transmitting member 171 may push the drawer 30 to move the drawer 30 through the rail. In other words, it is possible to automatically move the drawer 30 even if the user does not manually operate the drawer.

Meanwhile, the support frame 110 may be mounted with the drawer holder 180 along with the rail 120. Specifically, one drawer 30 may be provided with a pair of rails 120, one slit 113, and one drawer holder 180 as one set. When there are a plurality of drawers 30, these may also be provided as a plurality of sets.

The drawer holder 180 may be provided to provide an elastic restoring force to the drawer 30. In particular, the drawer 30 may be resiliently deformed when it is pulled out and may be provided to provide an elastic restoring force to the drawer 30 when the drawer 30 is retracted. That is, as described above, the drawing of the drawer is automatically performed by the electric driving portion, and the drawing of the drawer can be automatically performed by the drawer holder 180. Details of the mechanism between the drawer holder 180 and the drawer 30 will be described later.

Hereinafter, the mechanism between the electric drive part 150 and the drawer 30 will be described in detail with reference to FIGS. 7 and 8. FIG. Figure 7 is a view of the moving assembly 100 at the initial position of the drawer viewed from the inner side 112 of the support frame 110 and Figure 8 shows the moving assembly 100 at the operating position of the drawer, As viewed from the inner surface 112 of the housing 110.

The motor assembly 160 may be provided in a predetermined space between the inner side surface 112 of the support frame 110 and the partition wall 16 or in the electric drive part mounting space 130. Specifically, the motor assembly 160 may be mounted on the inner surface 112 of the support frame 110.

The motor assembly 160 may include a housing 161 and a power structure such as a motor 162 and a gear 162a may be accommodated in the housing 161. [ Therefore, the housing 161 is fixed to the support frame 110, so that the motor assembly 160 can be stably supported on the support frame. As described above, the housing 161 of the portion corresponding to the motor 162 may be formed to protrude more than the other portions due to the shape of the motor 162, Can be seated.

The gear 162a may be provided in plurality to reduce the rotational speed and transmit the torque.

The electric driving unit 150 may include a connecting member 163. And the motor assembly 160 may include the connecting member 163. FIG. The connecting member 163 may be provided between the housing 161 of the motor assembly 160 and the moving frame 170. That is, the connecting member 163 may be provided to connect the motor assembly 160 and the moving frame 170.

The connection member 163 may be provided so as to have a different lead-out distance from the motor assembly 160, particularly the housing 161. That is, the pulling distance of the connecting member 163 can be varied. The distance between the housing 161 and the moving frame 170 increases with an increase in the length of the connecting member 163 in the fixed housing 161. On the contrary, the distance between the housing 161 and the moving frame 170 decreases as the pull-out distance of the connecting member 163 decreases. Accordingly, the motor assembly 160 is driven to vary the drawing distance of the connecting member 163, and as a result, the moving frame 170 is moved.

One side of the connecting member 163 is movably fixed to the motor assembly 160 and the other side is fixed to move integrally with the moving frame 170. That is, the other side of the moving frame 170 may be coupled to the moving frame 170. The moving frame 170 may be formed with a connecting member engaging portion 174 and the moving frame 170 and the connecting member 163 are coupled through the connecting member engaging portion 174. Therefore, the movement of the connecting member 163 can be transmitted to the movement of the moving frame 170.

Specifically, the connection member 163 may be formed in a rack shape, and the motor assembly 160 may be provided in a pinion shape. That is, any one of the gears 162a may be connected to the connecting member 163 as a pinion gear. For example, the clockwise rotation of the motor 162 may be switched to the forward movement of the connecting member 163 via the gear 162a, and the counterclockwise rotation of the motor 162 may be transmitted to the gear 163a to the rearward movement of the connecting member 163. [ Of course, due to the gear configuration, the rotation direction of the motor and the movement direction of the connecting member may be reversed.

Therefore, the pulling distance of the connecting member can be increased or decreased according to forward and reverse driving of the motor assembly 160. The driving of the motor assembly 160 pushes or pulls the connecting member 163, thereby pushing or pulling the moving frame.

The moving frame 170 may be configured to transmit the driving force of the motor assembly 160 to the drawer 30. Therefore, basically, the moving frame 170 is moved by the driving of the motor assembly 160. The moving frame 170 may be movably disposed on the inner surface 113 of the support frame 110.

As described above, not only one drawer but also a plurality of drawers may be provided in the storage chamber, and when the door is opened, all of the drawers are preferably moved from the initial position to the operation position. It is preferable that movement of the plurality of drawers is performed collectively. Accordingly, the moving frame 170 may be provided to transmit a force to not only one drawer but also a plurality of drawers.

In order to transmit a force to a plurality of vertically arranged drawers, the moving frame 170 is preferably formed to extend vertically. In addition, the moving frame 170 may be provided with a plurality of transmitting members 171. Likewise, the transfer members may be arranged vertically on one moving frame 170. [ One transmitting member 171 may be provided so as to correspond to one drawer 30.

Figs. 7 and 8 show an example in which three transfer members 171 are formed on one moving frame 170. Fig. This means that one moving frame 170 moves and three vertically arranged drawers can be moved. That is, the movement of the single connecting member 163 means that the three drawers can be simultaneously moved from the initial position to the operating position. Accordingly, a plurality of drawers can be simultaneously moved through one motor assembly 150, one connecting member 163, and one moving frame 170. That is, even though only one electric drive unit 150 is interlocked with one door 20, a plurality of drawers can be easily moved. Therefore, the configuration can be simple, and it becomes possible to implement the control logic easy and easy.

The moving frame 170 is preferably supported on the inner side surface 112 of the supporting frame 110 so as to be movable back and forth. More specifically, it is preferable that the moving frame 170 is slidably supported in the forward and backward directions.

As described above, the moving frame 170 may be provided to move the plurality of drawers 30. Therefore, it is preferable that the moving frame 170 is provided in the shape of an upper and lower extending plate, so that the movement deviation of the upper and lower portions is minimized when the moving frame 170 moves.

For this, a sliding support portion 172 is preferably provided on the upper portion and the lower portion of the moving frame 170, respectively. The sliding supporting portions 172 may be formed on the upper portion of the moving frame 170 and a pair of the sliding supporting portions 172 on the lower portion. Accordingly, the moving frame 170 can be moved with four supporting points on the upper, lower, left, and right sides. Accordingly, it is possible to prevent the moving frame from being twisted when moving the moving frame 100 back and forth.

The left and right widths of the moving frame 170 may be enlarged to form the support portions 172 on the upper and lower portions of the moving frame 170. The transmitting member 171 may be formed on the extended portion. On the other hand, such an extended portion may not be formed in the intermediate transfer member portion. Therefore, the transfer member 171 formed in the middle may be separated from the moving frame 170 during long-term use. That is, there is a risk that the connecting portion between the transmitting member 171 and the moving frame 170 is broken. This is because the transfer member 171 may be protruded from the moving frame 170, and the transfer member 171 may be bent and broken when the transfer frame 171 is used for a long time.

In order to solve this problem, it is preferable that an unillustrated strength reinforcing rib is formed between the transmitting member and the moving frame 170 provided in the middle. The strength reinforcing ribs may be formed parallel to the direction in which the force is applied, and a plurality of strength reinforcing ribs may be formed.

A guide bar 114 may be formed on the support frame 110 to allow the movement of the movement frame 170 more smoothly. The guide bar 114 may be formed to correspond to the upper and lower portions of the moving frame 170, respectively. Accordingly, the guide bar may include an upper guide bar and a lower guide bar. The sliding support portion 172 may be formed to surround the guide bar 114. Therefore, the sliding support portion 172 can be slid back and forth while the guide bar 114 is wrapped.

A liner 173 (see FIG. 9) made of a POM material may be interposed between the guide bar 114 and the sliding support portion 172. That is, a liner formed of an engineering plastic such as polyacetal or polyoxymethylene may be interposed. The POM material has excellent mechanical strength, abrasion resistance, friction resistance and self-lubricating properties. Therefore, even if the motorcycle is used for a long period of time, the moving frame 170 can be supported to be smoothly moved. Of course, it is preferable that the guide bar 114 is coated with lubricant such as grease.

7, the motor assembly 160 is mounted at a lower position than the vertical center of the support frame 110. [ 5, the two motor assemblies 160 are mounted on the upper and lower portions of the partition wall 16, respectively. That is, the motor assembly 160 may be mounted on the opposite support frame 110 at a higher position than the vertical center of the support frame 110.

Due to the position of the motor assembly 160, the connecting member 163 pushes or pulls the upper or lower portion, which is not the upper and lower central portions of the moving frame 170, Therefore, basically, the connecting member 163 has to force to twist the moving frame. The connecting member 163 includes an extension 164 to minimize the force exerted on the eccentric portion of the moving assembly 170 rather than the upper and lower center portions thereof. The extending portion 164 may extend upward or downward from a distal end of the connecting member 163 (i.e., an end connected to the moving frame). Preferably, the extension 164 is formed to pass through the vertical center of the moving assembly 170. In other words, the extension 164 shown in FIG. 7 extends further from the upper center to the lower center of the moving assembly 170, and in the case of the extension of the opposite piece, . Thus, even if the vertical center of the connecting member 163 and the vertical center of the moving frame do not coincide with each other, the warping of the moving frame 170 can be minimized. The connecting member 163 may be coupled to the moving frame by being coupled to the connecting member engaging portion 174 by the extended portion 164. A plurality of connecting member engaging portions 174 may be provided to uniformly transmit the force and the moving displacement applied through the connecting member 163 to the entire upper and lower portions of the moving frame 170.

As described above, the support frame 110 has the slit 113 formed therein. The slits 113 may be formed in the same number as the number of the drawers 30. The slit 113 is formed so as to pass through the support frame 110, and is formed to be long on the right and left sides of the support frame 110 with reference to FIGS. The transfer member 171 moves left and right along the slit 113. With the refrigerator as a reference, the transmitting member 171 moves back and forth along the slit 113. The transmitting member may be connected to the drawer 30 provided on the outer side 111 of the supporting frame 110 because the transmitting member penetrates the supporting frame 110. That is, the transmitting member 171 may be engaged with the drawer 30 or may be in contact with the drawer 30. The transmitting member 171 is connected to the drawer so as to apply a force directly to the drawer 30. [

As shown in Fig. 7, the distance between the motor assembly 150 and the moving frame 170 at the initial position is relatively small. In this state, the moving frame 170 is biased to the left. In other words, it is located deeper inside the storage compartment of the refrigerator.

When the door 20 is opened through the sensor 40, that is, when a door open signal is generated, the motor assembly 150 is driven and the distance between the motor assembly 150 and the moving frame 170 is It is relatively increased. That is, the connecting member 163 pushes the moving frame 170 to move the moving frame 170 forward. At this time, the transmitting member 171 of the moving frame 170 pushes the drawer 30 to move the drawer 30 to the operating position. In other words, the appearance of the moving assembly 100 at the initial position shown in Fig. 7 turns into the appearance of the moving assembly 100 at the operating position shown in Fig. In other words, the connecting member 163 and the moving frame 170 shown in FIG. 7 are located at the initial position, and the connecting member 163 and the moving frame 170 shown in FIG. It can be said. On the other hand, the relative positional change of the support frame 110 and the housing 161 of the motor assembly does not occur. Therefore, the moving frame 170 is movable between the initial position and the operating position by being driven by the motor assembly 160 so as to be movable back and forth. Further, the moving frame 170 may be connected to the drawer so as to apply force to the drawer in a direction in which the drawer is drawn from the initial position to the operating position.

As will be described later, the connection between the drawer 30 and the moving frame 171, particularly the transfer member 171, can be referred to as a jam, and such release of the connection can be referred to as jam release. Particularly, when the moving frame 170 is moved from the operating position to the initial position, the connection between the moving frame 170 and the drawer 30 is preferably released. That is, it is preferable that the latch release is performed. Therefore, it is preferable that no force is applied to the drawer 30 when the moving frame 170 is moved from the operating position to the initial position. In other words, the movement of the drawer 30 from the initial position to the operation position is performed by driving the electric drive unit 150, while conversely, the movement from the operation position to the initial position is performed by driving the electric drive unit 150 Or the like. Details thereof will be described later.

Hereinafter, the automatic movement mechanism of the drawer 30 will be described in detail with reference to FIG. 9 is an enlarged cross-sectional view of a portion of the drawer 30 connected to the moving assembly 100.

The drawer 30 may include a basket 31 for receiving a stored object and a draw frame 32 provided outside the basket 31. The basket (31) can be movably supported on the rail (120) through the draw frame (32). It is preferable that the basket 31 and the draw frame 32 are integrally movable. The draw frame 32 may be provided at a lower portion of the basket 31. Details of the structure of the drawer 30 and the coupling structure between the drawer 30 and the rail 120 will be described later.

The draw frame 32 and the moving frame 170 are partitioned through the support frame 110. However, the transmitting member 171 of the moving frame 170 may extend to the draw frame 32 through the slit 113 formed in the supporting frame 110. [0053]

The moving frame 170 may be selectively connected to the draw frame 32. The movement of the moving frame 170 can be switched to the movement of the draw frame 32 or the drawer 30 through the connection of the moving frame 170 and the draw frame 32. Conversely, the movement of the moving frame 170 can be prevented from being switched to the movement of the drawer 30 through the disconnection between the moving frame 170 and the drawer frame 32.

Specifically, the drawer may have a latching member 33 formed thereon. The latching member 33 may be referred to as a first latching member 33 for the sake of distinction from other latching members described later. The first latching member 33 may be formed on the draw frame 32 and extended toward the moving frame 170.

As described above, the moving frame 170 can be moved forward from the initial position to the operating position. The movement of the moving frame 170 is switched from the initial position of the drawer 30 to the operation position. The movement of the moving frame 170 from the initial position to the operating position can be generated by a force pushing the moving frame 170 from behind. Therefore, it is preferable that the moving frame 170 moves the drawer 30 from the initial position to the operating position by pushing the drawer 30.

For this purpose, the first latching member 33 is preferably positioned in front of the transmitting member 171. When both of the moving frame 170 and the drawer 30 are in the initial position, they are preferably in contact with each other. Therefore, as the transmitting member 171 moves from the initial position to the operating position, the first engaging member 33 can be continuously pushed. Therefore, the drawer 30 can also be moved from the initial position to the operating position.

Conversely, when the drawer 30 is in the operating position, the transmitting member 171 can be returned to the initial position. That is, at this time, the connection or engagement between the transmitting member 171 and the first engaging member 33 is released. Therefore, the drawer 30 maintains the operating position state, and the transmitting member 171, particularly the moving frame 170, can be returned to the initial position.

As described above, the initial position of the drawer 30 may be said to be the state in which the drawer 30 is still located inside the storage compartment. Accordingly, when using the drawer 30, the user opens the door 20 and pulls the drawer 30 to draw at least a portion of the drawer 30 out of the storage room. Therefore, the maximum draw-out position of the drawer 30 can be defined. That is, the maximum draw-out position may be a position where the drawer 30 is drawn out as far as possible in a state where it is supported by the rail 120. Such a maximum withdrawal position may be predefined via the rail 120. That is, the separation distance between the operation position and the maximum withdrawing position may be preset.

Basically, the drawer 30 can be movably supported between the initial position and the maximum withdrawal position via the rail 120. [ As described above, by driving the electric driving part 150, the drawer 30 can be automatically moved from the initial position to the operating position.

Here, it is preferable that the drawer is manually pulled out from the operating position to the maximum drawing position (a position spaced a predetermined distance forward from the operating position). That is, the connection between the moving frame 170 and the drawer 30 is released from the operating position to the maximum drawing position, so that the drawer 30 can be manually drawn.

When the door 20 is opened, the drawer 30 can be automatically moved to the operating position so that the user can easily draw the drawer 30. [ When the user uses the drawer 30, the drawer can be further drawn out manually from the operating position. When the use of the drawer 30 is completed, the drawer 30 can be manually pulled. For example, the user can manually draw the drawer 30 up to the operating position or the operating position. Of course, it is also possible to manually pull the drawer 30 to the initial position.

That is, the automatic drawing of the drawer 30 interlocked with the opening of the door can be performed from the initial position to the operating position, and can be manually drawn from the operating position to the maximum drawing position.

Meanwhile, when the drawer 30 is drawn to the operating position, the motor assembly 160 may operate to move the connecting member 163 to the initial position. Thus, the draw-in of the drawer 30 can always be performed manually.

For example, the user can push the drawer 30 directly from the maximum draw position to the initial position. In addition, the user can push the drawer 30 directly from the maximum withdrawal position to the operating position and then pull the drawer 30 to the initial position by closing the door 20. At this time, it can be said that the door basket provided on the rear surface of the door 20 pushes the drawer 30 as the door is closed. Therefore, when the user manually closes the door 20, the user must close the door by exerting a force greater than a force for pulling the drawer.

In the above, the mechanism between the drawer 30 and the moving assembly 100 has been described basically from the viewpoint of automatic drawing of the drawer 30. However, it is preferable to minimize the labor of the user in drawing the drawer 30 as well as in drawing.

In this embodiment, the drawer 30 can be automatically drawn in to provide a convenience for the user when the drawer 30 is inserted. In particular, it is possible to provide the refrigerator in which the drawer 30 can be automatically brought into the operating position or the initial position in the vicinity of the operating position. That is, it is possible to prevent the user from being required to automatically pull the drawer 30 in the same manner that the user does not need the user's power to automatically draw the drawer 30. [ In addition, it is possible to prevent the door from being impacted on the drawer, and it is unnecessary for the user to exert a force for pulling the drawer in addition to the force for closing the door 20.

For this purpose, as shown in FIGS. 5, 6 and 8, a drawer holder 180 may be provided. That is, the drawer holder 180 may be mounted on the outer surface 111 of the support frame 110, like the rail 120.

More specifically, the rail 120 may be mounted on the lower portion of the slit 113, and the drawer holder 180 may be mounted on the upper portion of the slit 113.

The drawer holder 180 may be provided to provide an elastic restoring force to the drawer 30 when the drawer 30 returns from the operating position or the vicinity of the operating position to the initial position. The drawer 30 can be automatically returned to the initial position through the elastic restoring force.

For this purpose, the drawer holder 180 may be selectively connected to the drawer 30. That is, it may be provided to selectively hold the drawer.

Specifically, the drawer holder 180 may include a hooking member 181. The hooking member 181 may be selectively connected to the drawer 30. More specifically, the drawer may be provided with a second latching member (34). That is, the second latching member 34 connected to the hooking member 181 of the drawer holder 180 may be provided separately from the first latching member 33 connected to the transmitting member 171 of the moving frame.

The second latching member 34 may be provided on the upper side of the first latching member 33. Specifically, the second latching member 34 may be formed to protrude from the draw frame 32 in the direction of the support frame 110.

10, the hooking member 181 of the drawer holder 180 can be selectively connected to the second engaging member 34 provided on the drawer 30. As shown in FIG. For example, in a section from the initial position of the drawer 30 to the operating position (which may be referred to as an elastic section), the second engaging member 34 is connected to the drawer holder 180 .

When the drawer 30 is drawn out from the elastic section, the spring (not shown) provided in the drawer holder 180 is elastically deformed. When the drawer 30 is pulled in the elastic section, the spring is resiliently restored.

Specifically, in the elastic section, the drawer 30 is automatically drawn forward by the operation of the electric drive part 150. That is, to the operating position. The drawer 30 is pulled out and the second hooking member 34 provided on the drawer 30 pushes the hooking member 181. The hooking member 181 moves forward together with the second engaging member 34 so that the spring can be elastically deformed. In one example, the spring may be tensioned. The elastic restoring force generated at this time is automatically drawn into the drawer 30.

More specifically, the drawer (30) can be automatically drawn out by overcoming the elastic force of the drawer holder (180) by the operation of the electric drive part (150). As described above, when the pushing force of the drawer 30 is removed through the electric drive unit 150, the drawer 30 is subjected to elastic restoring force by the drawer holder 180. Therefore, the hooking member 181 pulls the second hooking member 34 of the drawer by the elastic restoring force. Therefore, even if the user does not exert any extra force to draw the drawer 30, the drawer 30 can be automatically drawn in.

The hooking member 181 is pulled by the second latching member 34 and the second latching member 34 is pulled by the second latching member 34. Therefore, It can be said that it is provided for pulling. That is, the hooking member 181 is pulled by the second engaging member 34 when the drawer 30 is pulled out, and when the drawer 30 is pulled, the second engaging member 34 . In other words, it is preferable that the hooking member 181 and the second engaging member 34 are always connected to each other when the drawer 30 is pulled in and out of the elastic section. Therefore, it is possible to automatically draw in the drawer, not the manual draw, so that the user can operate the drawer with great convenience. Of course, it is preferable that the automatic pull-in of the drawer 30 is performed from the operating position or the operating position to the initial position, not the section from the maximum drawing-out position to the initial position.

Hereinafter, the automatic draw-in mechanism of the drawer by the drawer holder 180 will be described in detail with reference to FIG.

As described above, the drawer holder 180 is resiliently deformed when the drawer 30 is moved from the initial position to the operating position, and when the drawer 30 is moved from the operating position to the initial position So that elastic restoring force is provided to the drawer 30. Here, elastic deformation and elastic restoration may be continuously generated in the drawer holder 180 from the initial position to the operating position.

In Fig. 10, there is shown an example in which the elastic section starts from the front more than the initial position and terminates more forward than the operating position.

First, in Fig. 10, the second latching member 34 at the initial position is shown. In this initial position, the first engaging member 33 and the transmitting member 171 are connected.

When the door is opened, the electric drive part 150 operates to push the first engaging member 33 forward by the transmitting member 171. [ Therefore, the drawer 30 is pulled forward, and the second latching member 34 is also moved forward.

In Fig. 10, for the sake of convenience, one hook member 181 is shown positioned at the elastic starting position and the operating position, respectively. For convenience, one transmission member 181 is shown in an initial position and an operation position, respectively. It can be seen that the transmitting member 181 is biased to the left of the slit 113 at the initial position and biased to the right of the slit 113 at the operating position.

When the second engaging member 34 is moved forward at the initial position and reaches the elastic starting position, the second engaging member 34 is connected to the hooking member 181. The elastic starting position may be preset between the initial position and the operating position so that the shape of the slots 183 and 184 formed in the housing 182 of the drawer holder 180 and the shape of the hooking member 181, And the like.

For example, if the distance between the initial position and the operating position is 120 mm, the elastic starting position may be set to be 30 mm forward from the initial position.

Since the engagement between the second engaging member 34 and the engaging member 181 is released until the drawer reaches the elastic starting position from the initial position, the spring of the drawer holder 180 is not elastically deformed. As the drawer reaches the elastic starting position, the hooking member 181 is moved forward to elastically deform the spring. Then, when the drawer moves further forward and reaches the operating position, the elastic variation further increases. That is, the second engaging member 34 is engaged with the hook member 181 shown on the right side of FIG. 10, and the drawer 30 is in the operated position.

As shown in the figure, the drawer holder 180 applies a force to draw the drawer 30 at an operating position of the drawer 20. [ Therefore, in the present embodiment, the operation of the electric drive part 150 at the operation position can be controlled to be maintained (for example, clockwise driven). That is, it is preferable that the operating state of the electric drive unit 150 is maintained so that the door 20 is always opened while the door 20 is being opened. In other words, the driving of the motor assembly 160 is maintained while the opening of the door is maintained, so that the moving frame 170 can be controlled to maintain the operating position. Of course, as will be described later, when the door 20 is closed, the motor assembly 160 may be reversely driven (for example, counterclockwise) so that the moving frame 170 is returned to the initial position.

On the other hand, the operation of the electric drive unit 150 at the operating position of the drawer 30 may cause the electric drive unit 150 to overload. This is because the motor deteriorates because the movable member 163 can not move forward. Accordingly, the motor driving unit 150 can return the moving frame 170 to the initial position by driving the drawer 30 to the operating position and then maintaining the operation for a predetermined time. The predetermined time may be determined in consideration of a time required for the user to select a specific drawer and take out the specific drawer. For example, the electric drive unit 150 may be controlled to be driven in the reverse direction after the moving frame 170 is moved to the operating position, and then the operating position is maintained for about 5 seconds.

As described above, it is preferable that the draw-out of the drawer 20 by the electric driving part 150 is from the initial position to the operating position. Therefore, the withdrawal from the operating position to the maximum withdrawal position can be performed manually. That is, the user can pull the drawer 20 by pulling it directly.

When the drawer 20 is pulled out from the operating position to the maximum draw-out position, the drawer holder 180 can be elastically deformed in the direction to obstruct the drawing. Therefore, it is preferable that the connection between the drawer holder 180 and the drawer 30 is released during manual drawing.

For this purpose, it is preferable to form an inclined slot 185 in a slot formed in the housing 182 of the drawer holder. Concretely, it is preferable to form an inclined slot 185 in front of the lower slot 184 among the two slots 183 and 184 formed vertically and in parallel. The inclined slot 185 may be referred to as a first inclined slot 185 in order to distinguish it from another inclined slot to be described later.

The first inclined slot 185 is located in front of the slot 184. When the user draws the drawer 30 slightly further forward from the operating position, the hooking member 181 can be restrained in the first inclined slot 185. [ At this time, the hooking member 181 is rotated, and the coupling between the hooking member 181 and the second engaging member 34 is released. The position where the engagement between the hooking member 181 and the second engaging member 34 is released is referred to as an elastic end position. Therefore, the elastic starting position in this embodiment is forward of the initial position, and similarly, the elastic end position can be said to be in front of the operating position.

When the engagement between the hooking member 181 and the second engaging member 34 is released, the user can easily pull the drawer manually to the maximum drawing position without being disturbed by the drawer holder 180 .

According to the present embodiment, the moving frame 170 can maintain the operating position in a state in which the door is opened as described above. Therefore, in a state in which the door is opened, the user can manually draw the drawer 30 to the operating position after drawing the drawer.

At this time, the user may not draw the drawer 30 to the operating position. However, as described above, in this embodiment, the distance between the elastic end position and the operating position is relatively short. Accordingly, the door can push the drawer 30 as the door is closed. That is, the drawer 30 may be pushed so that the second latching member 34 is reconnected to the latching member 181. When the door is closed, the moving frame 170 returns to the initial position, so that the force for drawing the drawer 30 is removed. Accordingly, the hooking member 181 can pull the second hooking member 34 by the resilient restoring force of the drawer holder 180, thereby automatically returning the drawer 30 to the initial position .

Unlike the above, the elastic starting position and the initial position can be made equal. However, in this case, the drawer 30 may be impacted when the drawer 30 is returned to the initial position. In this case, since the elastic deformation amount of the spring becomes relatively large (that is, the elastic section becomes large), the elastic restoring force of the spring may decrease with time.

Thus, by setting the elastic starting position to be spaced forward from the initial position, the initial return speed of the drawer can be made relatively fast and the terminal returning speed can be made relatively slow. Here, the difference in the return speed is very important.

The initial return speed is related to the closing speed of the door. For example, if a door closes very quickly, and the initial return speed of the drawer is slower than the door's closing speed, the door may be impacted by the door. On the contrary, if the terminal return speed is fast, the rail 120 may be subjected to a large impact by the drawer 20 as described above. Therefore, it is preferable that the drawer is allowed to return quickly at the beginning and smoothly and slowly return at the end. That is, it is preferable that the drawer is returned by the inertia at the end.

When the drawer 30 is pulled out, the second latching member 34 is connected to the latching member 181 at the elastic starting position. On the contrary, when the drawer 30 is retracted, The connection between the second latching member 34 and the latching member 181 is released. This can be performed in the same manner as the structure at the elastic end position described above. A second inclined slot 186 may likewise be formed at the rear end of the upper slot 183 to allow the hooking member 181 to rotate at the elastic starting position. If the hooking member 181 in the first inclined slot described above rotates counterclockwise to release the connection, the hooking member 181 in the second inclined slot 186 rotates clockwise to release the connection can do.

According to the embodiment described above, drawers can be automatically drawn and automatically drawn in the following order.

1) A plurality of drawers are in their initial position when the door is closed.

2) When the opening signal of the door is generated, the electric drive unit is driven to move the moving frame from the initial position to the operation position. As a result, a plurality of drawers are integrally moved from the initial position to the operating position and stopped.

3) At the operating position of the drawer, the user can manually pull the drawer further.

4) When a predetermined time has elapsed after a door closing signal is generated or the drawer is moved to the operating position, the electric driving part is driven in the reverse direction to return the moving frame to the initial position. As the door closes, the door can push the drawer to return the drawer to its initial position.

5) When the drawer is returned to the initial position, it can be automatically restored by elastic restoring force. At this time, the elastic restoring force is generated by the elastic deformation generated when the drawer is moved to the operating position. The elastic deformation and the elastic restoration can be generated by a spring provided in the drawer holder.

Therefore, according to the present embodiment, when the door is opened, the drawer can be automatically drawn out to the operating position where the user can easily draw the drawer. As the door is closed at the operating position, the door can be pushed into the initial position by pushing the drawer, and the drawer can be automatically drawn into the initial position by using the elastic restoring force.

Hereinafter, the drawing and drawing steps of the drawer will be described in detail with reference to FIG. FIG. 11 shows the connection and disconnection of the drawer holder 180 according to the change of the position of the drawer 30 in sequence.

11 (a) shows a state in which the drawer holder 180 and the drawer 30 are disconnected from each other at the initial position of the drawer.

When the opening signal of the door is generated, the electric drive unit operates to move the drawer to the operating position. 10 (b) shows the point at which the drawer holder 180 and the drawer 30 are connected while the drawer is moving from the initial position to the operating position. This position can be referred to as an elastic starting position as described above.

The reaction force does not act from the initial position to the elastic starting position except for the frictional force of the rail 120 which is substantially negligible. That is, no force is generated that interferes with drawing of the drawer. Therefore, it is possible to prevent an overload of the electric drive part in advance during the initial operation of the electric drive part. Then, the spring of the drawer holder 180 is elastically deformed from the elastic starting position. The elastic starting position may be set at a position spaced 30 mm forward from the initial position, for example.

As the drawer moves further out of the elastic starting position, the spring of the drawer holder is continuously elastically deformed.

Fig. 10 (c) shows a position where the spring of the drawer holder is elastically deformed.

10 (d) shows a state in which the drawer is further moved forward and the drawer holder 180 is disconnected from the drawer, that is, the elastic end position. Therefore, at the elastic end position, elastic restoring force of the spring holder by the spring is not applied to the drawer.

In the above-described embodiment, the operation position is a position between Figs. 10 (c) and 10 (d). Therefore, the user must manually pull the drawer from the operating position to the elastic end position, at which time the user must overcome the resilient restoring force of the drawer holder spring for a very short distance. The user can manually pull the drawer further from the elastic end position of the drawer. At this time, the user does not withdraw the drawer while overcoming the elastic restoring force.

Conversely, when the drawer is retracted, the user can manually pull the drawer further rearward than the elastic end position shown in Fig. 10 (d). In other words, the drawer can be manually pulled to the operating position. At this operating position, the drawer holder 180 and the drawer are reconnected.

When the closing signal of the door is generated, or when the electric drive portion has passed the predetermined time from the operation position, the electric drive portion is returned to the initial position. That is, the pushing force of the drawer through the electric drive part is no longer maintained. Therefore, at the operating position, the drawer is provided with elastic restoring force by the spring holder's spring. As a result, the drawer is automatically drawn in.

As the drawer is retracted, up to the position shown in Fig. 10 (b), the elastic restoring force of the drawer holder is provided to the drawer. Therefore, the drawer can be returned at a very high speed. In addition, when it comes close to the initial position, that is, in the section between FIG. 10 (b) and FIG. 10 (a), the elastic restoring force is released. Therefore, at this time, the drawer can be returned to the initial position by the inertia force.

In the above, embodiments for automatic drawing of drawers and embodiments for automatic drawing of drawers have been described in detail. Specifically, embodiments in which at least two hanging members (33, 34) are provided for automatic draw-out and automatic draw-in of the drawer have been described in detail.

Hereinafter, with reference to FIG. 12, another embodiment in which automatic draw-out and automatic draw-in of the drawer can be realized through one latching member will be described in detail. The basic mechanism or configuration may be applied similar or identical to the embodiments described above. Therefore, features different from those of the above-described embodiment will be described in detail.

Also in this embodiment, the motor assembly 160 and the moving frame 170 may be provided. The motor assembly 160 can be mounted on one side wall of the storage chamber, and the motor assembly 160 is connected to the moving frame 170. Similarly, as the motor assembly 160 operates, the moving frame 170 moves back and forth.

Also in this embodiment, the drawer holder 180 can be similarly provided. The drawer holder may also be mounted on one side wall of the storage compartment. The drawer holder 180 may be the same drawer holder as in the above embodiment. However, in the present embodiment, the drawer holder 180 may be provided so that the hooking member 181 projects laterally without protruding downward or upward. In other words, the hooking member 181 may be provided so as to protrude toward the drawer 20.

The drawer 30 may be provided with a latching member 36. That is, the drawer 30 is moved forward by pushing the latching member 36. The latching member 36 may be selectively connected to the latching member 181 of the drawer holder 180. Therefore, by the frontward movement of the drawer 30, the latching member 36 moves the latching member 181 forward. That is, the engaging member 36 in this embodiment corresponds to the second engaging member 34 in the above-described embodiment in that it is selectively connected to the hooking member 181.

However, the latching member 33 may be moved forward by the transmitting member 171 provided on the moving frame 170. [ That is, the engaging member 36 in this embodiment corresponds to the first engaging member 33 in the above-described embodiment. Therefore, in this embodiment, it can be said that one latching member 36 is connected to the drawer holder 180 and the moving frame 170.

Specifically, the transmitting member 171 provided on the moving frame 170 may be provided to push the hooking member 181 of the drawer holder 180. That is, the transmitting member 171 pushes the hooking member 181 connected to the engaging member 36, thereby pushing the engaging member 36 as a result. In other words, the transmitting member 171 may be provided to push the hooking member 181 from the rear side of the hooking member 181 protruding in the draw direction.

The moving frame 170 of the present embodiment may be provided with a connecting member engaging portion 174 which is engaged with the connecting member 180. The moving frame 170 may be provided with a roller 176 so that the moving frame 170 can be stably moved back and forth.

The roller 176 may be formed at two places on the upper part of the moving frame and two places on the lower part. Therefore, the moving frame can be stably moved with four supporting points. Of course, the roller 176 may be provided to be rolled on one side wall of the storage chamber.

The moving frame 170 may be provided between the drawer holder 180 and the drawer 30 so as to be movable back and forth. Particularly, the transmitting member 171 of the moving frame 170 may be moved back and forth within a distance between the engaging member 36 of the drawer and the drawer holder 180.

The moving frame 170 is formed in a plate shape, and a plurality of slits 175 for reducing weight can be formed. When the moving frame 170 is provided to move three drawers arranged vertically, three transfer members 171 must be provided. At this time, the two transmitting members 171 may be provided at the upper and lower ends of the moving frame 170. The intermediate transfer member 171 may be formed through the slit 175. Specifically, it can be formed through the slit 177 formed in the middle. That is, the portion where the slit is not formed in the slit 177 may be referred to as an intermediate transfer member.

Hereinafter, the drawers capable of automatic drawing and automatic drawing described above with reference to Figs. 15 to 18 will be described in detail. The drawers described may be equally applicable to general manual draw and manually drawn drawers.

The drawer 30 may include a basket 31 and a draw frame 32. The basket (31) may be provided to receive a stored product. The draw frame (32) may be provided to support the basket (31).

Specifically, the draw frame 32 may include a basket seating portion 38 and a rail engagement portion 37 coupled to the rail 120.

The basket may be seated in the basket seating part 38 so that the basket 31 can be engaged with the draw frame 32. In particular, the basket 31 may be seated in the basket seating part 38 vertically downward and coupled to the drawer frame. On the contrary, the basket 31 can be disengaged from the draw frame while moving vertically upward. Therefore, the draw frame 32 and the basket 31 can be easily joined and separated.

An opening 38a may be formed in a central portion of the draw frame. The seating portion 38 may be formed around the opening 38a.

The basket 31 may include an upper basket 31a and a lower basket 31b. The lower basket 31b may be inserted into the opening 38a and the upper basket 31a may be seated in the seating portion 38. [ The upper basket 31a and the lower basket 31b may be integrally formed.

The rail engaging portions 37 may be extended from the left and right sides of the draw frame 32 back and forth. It is preferable that the rail coupling portion 37 and the rail are shielded from the view of the user as much as possible.

For this purpose, the upper basket is formed to have a greater lateral width than the lower basket so as to cover the rail coupling portion 37 from the upper side. In addition, the draw frame 32 may include a draw decor 39. The draw decor may be provided in front of the draw frame 32. In particular, the draw decor 39 may be provided to extend laterally from the front lower portion of the basket 31. That is, it may be provided to cover the rail coupling portion 37 in front of the drawer 30.

Meanwhile, the above-mentioned latching member 33 may be formed on the draw frame 32. The drawer may be commonly used in the left freezer compartment and the right freezer compartment. Accordingly, the latching members 33 may be formed on the right and left sides of the draw frame 32, respectively. As described above, when the drawer 30 is formed in the right freezer compartment, only the latching member 33 provided on the left side may be used.

The drawer frame 32 may be provided with an engaging member mounting portion 34a for mounting the engaging member for engaging with the drawer holder. Similarly, the mounting portions 34a may be formed on both sides of the drawer.

An engaging member (34) coupled with the drawer holder is provided for automatic withdrawal. Therefore, when the automatic pull-in is not required, the latching member 34 can be omitted. Therefore, unlike the case in which the engaging member 33 is integrally formed with the draw frame 32, the engaging member 34 is preferably detachably attached to the draw frame.

Hereinafter, the rail 120 will be described in detail with reference to FIG.

The rail 120 is configured to support the drawer 30 so as to be movable back and forth. Therefore, it is preferable that the rail 120 includes a movable rail 121 which moves back and forth integrally with the drawer 30.

In addition, the rail coupling portion 37 may be provided to be engaged with the movable rail 121.

Specifically, the rail coupling portion 37 may be formed to have a channel-shaped cross-section so as to be seated while enclosing the movement rail 121. That is, it is preferable that the rail engaging portion 37 is engaged with the moving rail 121.

A locking part 125 may be formed at the rear end of the moving rail 121. The latching part 125 may be formed to insert the rear end of the rail coupling part 37. Therefore, when the rail coupling portion 37 is inserted into the coupling portion 125, the rearward movement and the upward movement of the rail coupling portion 37 may be restricted.

Elastic protrusions 128 may be formed at the front end of the movable rail 121. A mounting hole 37a for inserting the elastic protrusion 128 may be formed at a front end of the rail coupling portion 37. [

The movable rail 121 may be provided with an elastic projection 126 for engaging with the movable rail 121 to form the elastic projection 128. A mounting portion 126a may be provided at one side of the elastic projection bracket 126 and an elastic projection supporting portion 126b may be provided at the other side. Therefore, the elastic projection bracket 126 can be coupled to the movable rail 121 through the mounting portion 126a.

A cutout 127 may be formed between the elastic projection supporting portion 126b and the mounting portion 126b. The elastic protrusion 128 may be bent at the elastic protrusion supporting portion 126b. Accordingly, the elastic protrusion 128 can be elastically deformed with respect to the elastic protrusion support portion 126b through the cutout portion 9127. [

Specifically, the elastic projection supporting portion 126b may be formed horizontally, and the elastic projection 128 may be formed to be bent vertically downward from the elastic projection supporting portion 126b. Therefore, the elastic protrusion can be elastically deformed in a direction in which the angle with the elastic protrusion supporting portion 126b is reduced. That is, it can be elastically deformed toward the left and right center of the drawer.

Meanwhile, the rail 120 may include a fixed rail 122. The fixed rail 122 supports the fixed rail 122 at a lower portion of the movable rail 121 so as to be slidable.

The rail 120 may be fixed to the side wall of the storage compartment or the support frame 110 through the rail brackets 123 and 124. The rail bracket may include a front rail bracket 123 and a rear rail bracket 124. That is, at least two support points can be formed in front of and behind the one rail. These rails 120 are provided on both sides of the drawer 30, respectively.

The front rail bracket 123 and the rear rail bracket 124 are spaced apart from each other by a predetermined distance. The transmission member 171 may be provided to move between the front rail bracket 123 and the rear rail bracket 124. That is, a section between the initial position of the transmitting member 171 and the operating position is located between the front rail bracket and the rear rail bracket. Therefore, the transmitting member 171 and the brackets 123 and 124 are not interfered. This means that a slit 113 of the support frame 110 is formed between the front rail bracket and the rear rail bracket.

Hereinafter, the coupling structure of the drawer 30 and the rail 120 will be described in more detail with reference to Figs. 17 and 18. Fig.

In order to engage the draw frame 32 with the rail 120, the user places the draw frame 32 upwards with the front of the drawer up and the rear of the drawer down as shown in Fig. It can be moved backward. At this time, the rear end of the rail engaging portion 37 is inserted into the engaging portion 125 provided on the rail and is engaged.

9, the rail engaging portion 37 may be seated while covering the moving rail 121 at an upper portion of the rail 120, in particular, the moving rail 121. Therefore, when the rail engaging portion 37 is seated on the moving rail 121, lateral movement of the drawer is restricted.

Thereafter, in the state shown in Fig. 17, the user can lower the front of the draw frame 32 downward. At this time, the elastic protrusion 128 is resiliently deformed toward the right and left center of the drawer. When the rail coupling portion 37 is completely seated on the movable rail 121, the elastic protrusion 128 is elastically restored and mounted And is inserted into the hole 37a. The mounting hole 37a may be formed in the side flange 37b that covers the outer surface of the moving rail. Therefore, even if the elastic projection 128 is inserted into the mounting hole 37a and then protruded

Therefore, the draw frame 32 can be fixed to the movable rail 121 by the locking part 125 and the elastic protrusion 128.

On the other hand, the state shown in Fig. 17 can be referred to as the initial position of the drawer 30. [ It can be seen that the engaging member 33 and the engaging member mounting portion 34a are positioned between the front rail bracket 123 and the rear rail bracket 124 at the initial position of the drawer 30. [ In particular, it can be seen that it is biased by the rear rail bracket 124.

When the drawer 30 is moved to the operating position, the engaging member 33 and the engaging member mounting portion 34a may be moved forward and biased by the front rail bracket 123. [ Therefore, the engaging member 33 and the engaging member mounting portion 34a are always positioned between the front rail bracket 123 and the rear rail bracket 124 in the interval between the operating position of the drawer 30 and the initial position .

Hereinafter, the relationship among the control components that can be applied to an embodiment of the present invention will be described in detail with reference to FIG.

First, a refrigerator according to an embodiment of the present invention includes a main controller 200. The basic operation of the refrigerator can be controlled through the main control unit 200. [

The refrigerator according to an embodiment of the present invention may include a motor assembly 160. The motor assembly 160 may include a motor 162 and a motor controller 160. The motor 162 may be driven in the forward and reverse directions. For example, the above-described transmission member 171 can be moved forward by forward (clockwise) driving. Conversely, the transmitting member 171 can be moved backward by reverse driving.

The driving direction of the motor 162, the duty ratio applied to the motor, and the driving and stopping of the motor may be controlled through the motor control unit 160.

The motor assembly 160 may include a connecting member 163 that moves back and forth as described above. The maximum protruding length of the connecting member 163 corresponds to the operating position of the transmitting member, and the minimum protruding length of the connecting member 163 corresponds to the initial position of the transmitting member. Therefore, the connecting member 163 is moved between the maximum protrusion length and the minimum protrusion length.

It is possible to determine whether the connection member 163 in the motor assembly 160 is at a position corresponding to the initial position of the drawer or at a position corresponding to the operation position. That is, the motor assembly 160 may include two Hall sensors 166 and 167.

As shown in FIGS. 7 and 8, the motor assembly 160 may be provided with a magnet 168. The magnet 168 may be provided to move within the housing 161 according to the movement of the connecting member 163. [ Accordingly, when the first hall sensor 166 recognizes the magnet 168, it can be seen that the transmitting member is the initial position. When the second hall sensor 167 recognizes the magnet 168, it can be seen that the transmitting member is the operating position.

The Hall sensors 166 and 167 can be used to determine whether the motor assembly 160 is operating normally. This will be described in detail in the control method described later.

The motor control unit 165 basically operates the motor 162 when a door opening is detected through the sensor 40. Here, the sensor 40 may be a sensor that senses opening of the door at a predetermined opening angle (for example, 90 degrees opening angle). That is, when the sensor 40 senses that the door is opened 90 degrees, the motor control unit 165 operates the motor 162 to draw the drawer from the initial position to the operating position.

When the sensor 40 detects door opening, a door opening signal is generated and transmitted to the motor control unit 165 through the main control unit 200. Of course, the door opening signal may be directly transmitted to the motor control unit 165.

Meanwhile, the refrigerator according to an embodiment of the present invention may include a door switch 50. The door switch 50 may be a configuration commonly used in a refrigerator. When the opening of the door is detected by the door switch 50, the lighting device 60 illuminating the storage room can be operated. Here, the door switch 50 may be provided separately from the sensor 40. In other words, it can be basically configured to be provided only for the control of the lighting apparatus 60. [ In one example, the door switch 50 may determine that the door is open at a relatively small opening angle so that the lighting device 60 is activated. Basically, it can be said that the state in which the close contact between the door and the cabinet is released can be detected by opening the door.

As described above, door opening detection through the sensor 40 must be performed on the premise of opening detection of the door through the door switch 50. This is because the door opening detection through the door switch 50 is performed at a very small opening angle and the door opening detection through the sensor 40 is performed at an opening angle of approximately 90 degrees, for example. The control logic through the sensor 40 and the door switch 50 will be described later.

Hereinafter, a control method applicable to an embodiment of the present invention will be described in detail with reference to FIGS. 20 to 26. FIG.

First, the initial step S10 will be described in detail with reference to FIG. The initial stage may be a stage in which the motor 162 is driven for the first time when power is applied to the refrigerator. That is, the motor 162 is initially driven to move the transmitting member to the initial position, thereby initializing the motorized drawer system.

Therefore, when the initial step S10 is started, the motor operates (S30). That is, it operates to return the transmitting member 171 to the initial position. The motor driving direction at this time may be counterclockwise as an example. Hereinafter, it is assumed that the transmitting member moves backward when the motor driving direction is counterclockwise and the transmitting member moves forward when the motor driving direction is clockwise.

The operation of the motor can be controlled with a predetermined duty ratio. The operation of the motor ends when it is determined that the transmitting member 171 has returned to the initial position through the first hall sensor 166. For example, when the ON signal is generated from the first hall sensor 166, the operation of the motor is stopped (S40).

In addition, the operation of the motor can be controlled to be stopped when the operation time elapses a predetermined time. For example, the predetermined time may be 5 seconds. Here, the predetermined time may be set to be larger than the maximum allowable motor operation time in consideration of the margin. Therefore, it is normal that the operation of the motor is performed until an ON signal is generated in the first hall sensor 166 before reaching the predetermined time.

Therefore, if it is detected that the operation time of the motor is equal to or longer than a predetermined time after the motor is stopped (S50) or a signal from the second hall sensor 167 is generated (S50), it is determined that an error has occurred in the electric drawer system Can be judged. Therefore, if an error occurs, the notification step S100 may be performed. That is, a step of displaying an error may be started.

Here, it is normal that the ON signal generation of the second hall sensor 167 occurs at the operating position, not the initial position. Accordingly, it can be said that an on-signal generation of the second hall sensor 167 in the initial step S10 is an occurrence of an abnormality in the entire electric drawer system including the hall sensors.

In addition, when the motor is operated for a predetermined time or more, it can be said that an abnormality has occurred in the entire electric drawer system as described above. This is because the load by the drawer is not applied to the motor 162 for returning to the initial position of the transmitting member.

On the other hand, if an error occurs, the notification step S100 may be performed as shown in FIG. In the notification step S100, whether or not an error has occurred is determined again (S110). At this time, it is possible to determine which of the drawers has generated an error. That is, if an electric drawer is installed in each of the freezing chambers, it is judged whether there is an error in the left drawer or an error in the right drawer. In the case of an error of the electric drawer, step (S120) may be performed. At this time, an error code can be displayed through the display.

Then, after the error is displayed or it is judged that it is not an error, the state is switched to the waiting state (S200). The standby state (S200) may be a state in which the driving of the motor is stopped.

As shown in FIG. 22, a determination step (S210, S220) for determining a condition for automatically fetching the drawer in the waiting state (S200) may be performed. The condition for automatic withdrawal of the drawer may be referred to as opening detection of the door through the sensor 40. Specifically, when the reed switch 41 detects opening of the door (S210), it can be seen that the above condition is satisfied.

Therefore, the motor 162 is always kept in the standby state (S200) until the door is opened through the sensor 40. [

On the other hand, as described above, detection of the opening of the door through the sensor 40 is based on detection of door opening through the door switch 50). Therefore, when the door opening through the door switch 50 is detected (S200), the taking-out step S300 can be performed.

If the opening of the door through the sensor 40 is detected and the opening of the door through the door switch 50 is not detected, it is determined whether or not the sensor 40 is in error (S230) and the corresponding error is displayed on the display have. Thereafter, it can be switched to the standby state (S200).

In the drawing step S300, the motor 162 should be operated to push the drawer 30 forward. Therefore, a relatively large load is applied to the motor 162 in the drawing-out step. Particularly, when the drawer 30 has a large amount of storage, a larger load is required. Therefore, it is preferable that a large output is controlled to be generated in the motor in the drawing step S300. That is, it is preferable to control the duty ratio to increase as the load increases.

More specifically, the extracting step S300 may include a step S310 of calculating a frequency generator (FG) generated upon rotation of the motor. The FG can be calculated every predetermined time, for example, 100 ms (milliseconds).

The drawing step S300 may include a motor drawing driving step S320 for driving the motor in a clockwise direction with a different duty ratio according to the calculated FG. That is, the motor can be driven at a predetermined duty ratio under each load condition after dividing the motor into a plurality of load conditions according to the calculated FG.

For example, when the calculated FG is 0 to 50, the motor can be driven at a duty ratio of 180. When the calculated FG is 51 to 100, the motor can be driven with a duty ratio of 200. The duty ratio is increased as the calculated FG is increased. For example, the duty ratio can be controlled to 250 when the calculated FG is 251 or more.

In other words, as the calculated FG is larger, the load is determined to be larger and the output of the motor is increased.

The drawing-out driving step (S320) of the motor may be performed until the ON signal is generated in the second Hall sensor 167. [ In addition, the drawing-out driving step (S320) of the motor may be performed until a preset time is reached. For example, the predetermined time may be 3 seconds.

On the other hand, a disturbance may be generated that interferes with drawing of the drawer during the drawing driving step (S320) of the motor. That is, a very heavy object may block the front of the drawer, or foreign matter may enter the rail 120, and the moving rail 121 may not be moved. Therefore, in this case, when the motor is continuously driven in the clockwise direction, it can be generated in a large amount in the motor. That is, the motor may be damaged. Therefore, if a fault occurs, it is preferable that the motor driving step is no longer continued and the returning step S500 is performed.

Of course, it is preferable that the step of determining whether an obstacle is present (S350) is performed before performing the returning step (S500).

The obstacle determining step S350 may be performed during the driving step of the motor, and the obstacle determining step S350 may be performed when the FG calculating cycle reaches a predetermined number of times. For example, the obstacle determination step S350 may be performed from the fourth FG calculation. That is, the FG calculation up to the third, for example, can be excluded from the obstacle judgment. This is because a large load may be generated in the motor relatively due to the initial stopping frictional force of the motor in the drawing-out driving step. Therefore, the obstacle determining step S350 is performed from the predetermined number of times, and this can be performed until the drawing-out driving step S320 of the motor is finished.

If the FG calculated in the determining step S350 is larger than the predetermined obstacle FG, it is determined that there is no obstacle and the motor drawing driving step may be continued. However, if the calculated FG is equal to or smaller than the predetermined obstacle FG, it can be determined that an obstacle exists. That is, it can be determined that the motor is not normally driven due to an overload of the motor due to the obstacle. Accordingly, if it is determined that an obstacle exists, the motor is terminated and the returning step (S500) is performed.

On the other hand, if it is determined that there is no obstacle and the drawing operation of the motor is finished, a step of determining whether or not an error is present may be performed (S340). It is possible to determine whether the motor takes up the predetermined period of time, for example, 3 seconds or more until the end of the drawing operation of the motor. The predetermined time may be a maximum allowed time, and it may be determined that an error that takes longer than 3 seconds is an error. Further, even if the ON signal of the first Hall sensor 166 is generated, it can be judged as an error. When the end of the motor drawing-out driving step (S340), that is, the drawing-out step (S300) is finished, the stopping step (S400) may be performed.

As shown in Fig. 24, the stopping step S400 is not a step for stopping the driving of the motor. That is, it may be a step of stopping withdrawal of the drawer. In other words, it is determined that the transferring step of the motor is a step for moving the transferring member forward, and it is judged that the transferring member is moved to the operating position through the second hall sensor 167 and the forward movement of the transferring member is stopped do. That is, the step of stopping the forward movement of the transmitting member may be referred to as stopping step S400.

As described above, in the drawing step S300, the motor is driven in the clockwise direction. Similarly, the clockwise driving of the motor can be maintained in the stop step S400. However, since the driver is not pushed in the stopping step (S400), the driving of the motor can be maintained with a minimum output.

In the stopping step S400, the motor may be controlled to be driven to a minimum duty ratio that can be applied to the motor (S420). That is, in the driving of the motor associated with the automatic drawing of the drawer, the motor can be controlled to operate with the smallest duty ratio among the duty ratios applied to the motor. This is to prevent the drawer from being automatically drawn in before the user operates the drawer by the elastic force of the draw holder in the stop step (S400).

Meanwhile, the stopping step S400 may be performed for a predetermined time. For example, for 3 seconds (S430). When the predetermined time has elapsed, a return step S500 may be performed.

The user may push the drawer 30 in the stopping step S400. In this case, it is preferable that the returning step (S500) is performed even during the stopping step. To this end, the step of calculating FG (S410) may also be performed in the stopping step S400. Then, a step S440 may be performed to determine whether the user has pushed the drawer in the direction of drawing through the calculated FG. For example, if the calculated FG is smaller than the predetermined FG, it can be judged that the user drops the draw.

In this case, it is preferable that the determining step S440 is performed after a predetermined number of FG calculation times have elapsed.

As described above, the stopping step (S400) can normally be performed, for example, for 3 seconds. Thereafter, the motor may be driven so that the transmitting member 171 returns to the initial position. This may be referred to as a return step (S500). In the returning step, the pushing force of the drawer is removed. Therefore, in the returning step, the drawer is automatically returned by the elastic restoring force of the above-described drawer holder.

As shown in Fig. 25, the returning step S500 includes stopping the driving of the motor (S510). That is, a step of temporarily stopping the driving of the motor to switch the driving direction of the motor may be performed. The motor may be a BLDC (Blushless DC) motor, at which time a brake input may be applied to stop the motor. The step S510 may be performed for 10 ms, for example. Through this step S510, it is possible to prevent an impact from being applied to the motor itself due to the sudden change of the rotation direction of the motor.

Meanwhile, the returning step S500 may be performed similarly to the initial step S50 described above.

That is, when the ON signal from the first Hall sensor 166 is generated or the motor is operated in the counterclockwise direction by a predetermined time (S530), the driving of the motor may be stopped (S540). Here, the predetermined time means the maximum allowable time, for example, 5 seconds. The operation of driving the motor for 5 seconds may be determined as an error (S550). Of course, when an ON signal is generated from the second Hall sensor 167, it may be determined as an error (S550). If it is an error, the notification step S100 may be performed.

When the driving of the motor is stopped (S540), the waiting state (S200) is performed.

Here, it is preferable that the duty ratio in the returning step S500 is larger than the duty ratio in the initial step S10. However, when the FG sensed in the extraction step, that is, the total FG is smaller than the predetermined FG, the motor may be driven with the same duty ratio as in the initial step S10. That is, in this case, the obstacle is substantially disrupted in forward driving or reverse driving of the motor. Therefore, even if a relatively small duty ratio is applied, the transmitting member can be returned smoothly.

On the other hand, if the door is suddenly closed, the drawer at the operating position may hit the basket of the door. Therefore, it is preferable that the step of urging the drawer is performed. For example, if a door suddenly closes while the drawer is being withdrawn, the drawer is withdrawing and the door may be closed, causing collision between the drawer and the drawer.

Therefore, in this case, it is highly desirable that control logic for urgently returning the drawer is performed.

That is, it is preferable that step S700 is performed so that the drawer is urgently returned during the drawing step S300 and the stop step S400. Of course, this emergency return step need not necessarily be performed when the drawer is located in the initial position.

Accordingly, step S600 of determining the emergency return condition may be performed, and if the emergency return condition is satisfied, the emergency return step S700 may be performed.

As described above, the emergency return condition is satisfied during the withdrawal step or the stop step, and the sensor 40 senses that the door is closed. That is, it can be said that the reed switch 41 senses the closing of the door.

The emergency return step may also be performed in the same manner as the returning step. That is, the step S720 of driving the motor in the counterclockwise direction, the step S740 of stopping the motor, and the step S750 of determining the error may be included. Of course, if it is determined to be an error, the notification step S100 may be performed.

On the other hand, when the emergency return step is started, the motor may be driven in a clockwise direction. Therefore, it is preferable that the motor is driven in the counterclockwise direction after stopping the motor for 10 ms for a predetermined time.

The load applied to the motor can be minimized through the above-described control method. In addition, when a large load is applied to the motor due to an obstacle, the motor may perform a returning step or an emergency returning step to prevent a large load from being continuously applied to the motor.

10: cabinet 20: door
30: drawer 31: basket
32: Drawer frame 40: Sensor
41: Reed switch 42: Magnet
100: Moving assembly 110: Support frame
120: rail 150: electric drive part
160: motor assembly 170: moving frame
180: Drawer holder

Claims (20)

A cabinet having a storage room;
A door rotatably installed in the cabinet to open and close the storage compartment;
A sensor for sensing the opening of the door,
A drawer installed in the storage room and configured to move from an initial position to an operation position spaced a predetermined distance forward when the door is opened;
Wherein the drawer is resiliently deformed when the drawer is moved from the initial position to the operating position and provides elastic restoring force such that the drawer moves from the operating position to the initial position;
An electric drive part for moving the drawer from the initial position to an operation position and elastically deforming the drawer holder; And
Wherein the drawer is configured to move back and forth with respect to the storage compartment. The method according to claim 1,
The drawer holder
A hook member selectively connected to the drawer; And
And a spring elastically deformed or resiliently restored according to a moving direction and a distance of the hooking member. 3. The method of claim 2,
Wherein the drawer is provided with a latching member selectively connected to the drawer holder. The method of claim 3,
The drawer holder
And a housing having a slot for receiving the spring and guiding movement of the hooking member. 5. The method of claim 4,
Wherein the hanger member protrudes in a horizontal direction with respect to the housing and is selectively connected to the drawer. 6. The method according to any one of claims 1 to 5,
Wherein the electric drive unit includes a motor assembly and a moving frame,
Wherein the moving frame is movable back and forth between the initial position and the operating position by driving the motor assembly. The method according to claim 6,
Wherein the moving frame includes a transmitting member for transmitting a force to the drawer,
Wherein the transfer member pushes the drawer so that the drawer is moved from the initial position to the operating position. The method of claim 3,
Wherein the electric drive unit includes a motor assembly and a transmitting member that is moved back and forth by driving the motor assembly,
Wherein the transmitting member is provided to move the latching member of the drawer forward through the latching member. 9. The method of claim 8,
The hook member protrudes from the housing of the drawer holder and is connected to the engaging member of the drawer,
And the transmitting member is provided to push the hooking member in a direction perpendicular to the protruding direction of the hooking member. 10. The method of claim 9,
Wherein a seating part is formed on one side of the hooking member, the seating part being in contact with the transmitting member. 11. The method of claim 10,
The movement of the transmitting member is transmitted to the hooking member as the transmitting member is seated on the seating portion and moved forward, and when the transmitting member is detached from the seating portion and moved backward, the transmitting member and the hooking member Is disconnected from the refrigerator. A cabinet having a storage room;
A door rotatably installed in the cabinet to open and close the storage compartment;
A sensor for detecting opening of the door;
Wherein the door is provided in the storage chamber so as to move from an initial position forward to an operation position spaced apart by a predetermined distance when the door is opened;
A drawer holder including a retaining member selectively connected to the retaining member and a spring elastically deformed or resiliently restored by movement of the retaining member;
An electric drive unit including a transmitting member for pushing the hook member to move the drawer from the initial position to an operating position, and a motor assembly for moving the transmitting member by electric power; And
Wherein the drawer is configured to move back and forth with respect to the storage compartment. 13. The method of claim 12,
And a connection between the latching member and the latching member is maintained in a section between the initial position and the operating position. 14. The method of claim 13,
Wherein the connection between the latching member and the latching member is released as the drawer is further pulled out forward at the operating position so that the drawer is manually pulled out. 14. The method of claim 13,
And the electric drive part is driven to move the transmitting member backward to move the drawer from the operating position to the initial position. 16. The method of claim 15,
And as the spring is resiliently restored, the hooking member moves the latching member backward so that the drawer is returned from the operating position to the initial position. 17. The method according to any one of claims 12 to 16,
Wherein the drawer holder includes a housing having the slot for receiving the spring and guiding movement of the hook member. 17. The method of claim 16,
Wherein the hanger member protrudes toward the drawer with respect to the housing and is selectively connected to the drawer. 19. The method of claim 18,
Wherein the transmitting member is positioned between the housing and the latching member and is configured to push the latching member forward from the rear of the latching member. 13. The method of claim 12,
Wherein a plurality of the drawers are provided in the upper and lower parts, the transfer member is provided in each of the plurality of drawers,
Wherein the electric driving unit includes a moving frame provided to move the plurality of transmitting members integrally by driving the motor assembly.

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