KR20130071178A

KR20130071178A - An automatic drawing door having a preventing device of autowinding wire and a refrigerator thereof

Info

Publication number: KR20130071178A
Application number: KR1020110138547A
Authority: KR
Inventors: 김명환; 유대현
Original assignee: 엘지전자 주식회사
Priority date: 2011-12-20
Filing date: 2011-12-20
Publication date: 2013-06-28

Abstract

PURPOSE: An automatic drawer door with a wire winding unit and a refrigerator with the same are provided to restrict the winding of wires as the wires are automatically winded by a plate spring when a drawer door is closed. CONSTITUTION: An automatic drawer door with a wire winding unit comprises a driving unit, wires, and an automatic winding unit(100). The driving unit is mounted on the inner side of a refrigerator door, and automatically operates the door. The wires are electric wires to supply electric power to the driving unit. The automatic winding unit unwinds the wires when the door is opened, and automatically winds the wire when the door is closed. The automatic winding unit comprises a winding lock unit which prevents the wires from being automatically winded.

Description

Automatic retractable door with wire winding restraint and refrigerator with same {AN AUTOMATIC DRAWING DOOR HAVING A PREVENTING DEVICE OF AUTOWINDING WIRE AND A REFRIGERATOR THEREOF}

The present invention relates to an automatic retractable door using an automatic winding device and a wire winding restraint device for preventing the automatic winding by the spring spring elastic stress of the automatic winding device after the wire is drawn out from the refrigerator having the same. Specifically, in a refrigerator having an automatic pull-out door, the wire is automatically unfolded or wound as the door is opened and closed, and a wire winding restraint device, which functions as a stopper to prevent the wire from being wound, is installed. It relates to a self-drawing door.

The refrigerator is a home appliance that is provided with a storage space shielded by a refrigerator door and stores food at a low temperature in the storage space. Such a refrigerator allows the food stored in the storage space to be optimally stored using cold air generated through heat exchange of a refrigerant circulating in a refrigeration cycle. Recently, in addition to the basic functions of the refrigerator, various functions have been added to increase the user's convenience, and the automatic retractable door is a kind of such function.

The automatic draw-out door is a conventional method in which an actuator is added to a door that is directly opened and closed by a user so that the door can be opened and closed by a driving force of an actuator rather than an attraction force, and is mainly used in a drawer type door called a drawer. This is because the drawer-type door is pulled out together, which requires more force to open and close the door of a conventional refrigerator.

As an actuator for drawing out the drawer, a drive motor is usually used, and a conductor for applying electric power to the drive motor is necessarily connected to the drive motor.

As such, in the conventional automatic take-out system of the refrigerator, when the wire connected to the drawer is pulled out or returned to its original state, a chain-type protection tube is included to prevent the wire from being twisted or broken so as to retract when the door is closed. When opened, it is expanded.

In order to protect the existing refrigerator wire, because the chain is used as a separate structure, cost competitiveness is reduced, and unnecessary space is generated in the section in which the chain operates, thereby reducing convenience and economy.

The present invention is to solve the problems of the prior art as described above, has the following object.

An object of the present invention, when the drawer drawer-type door is automatically closed, the wire is automatically wound and stored by the elastic restoring force of the leaf spring through the automatic winding device, the wire is automatically opened in the state that the wire is drawn out It is to provide an automatic pull-out door equipped with a wire wound restraint device for restraining the winding phenomenon and a refrigerator having the same.

Another object of the present invention is a wire winding restraint device including a locking restraining device that enables the wire to be stopped in a drawn state when the door is opened continuously for a required time in a drawer-type door having a wire winding device. It is to provide an automatic retractable door equipped with.

In the present invention, the rotating plate wound around the wire can be constrained by the stopper, the stopper formed by the roller in a certain direction so as not to act as a stopper, when operating in the opposite direction, the roller is fitted to the stop rib The rotation is constrained so that it acts as a stopper.

In order to achieve the above-mentioned object, the present invention will be realized by an embodiment having the following constitution as a preferred embodiment.

According to an embodiment of the present invention, a drive unit mounted inside the door of the refrigerator and automatically opening and closing the door in a drawer manner; A wire that is a conductive wire for supplying power to the drive unit; And an automatic winding device in which the wire is unwinded when the door is opened and the wire is automatically wound when the door is closed. The automatic winding device includes a winding restraint device that prevents the wire from being automatically wound in a pulled out state. It provides an automatic pull-out door equipped with a wire winding restraint device comprising a.

According to another embodiment of the present invention, the self-winding device, the wire is pulled out, the housing is wound or embedded; A leaf spring having an elastic restoring force in a rotational direction; A rotating plate to which the leaf spring is mounted and rotates so that the wire is wound; And a winding shaft in which one end of the leaf spring is fixed inside the housing.

The winding restraint device may include a support member hinged around a hinge shaft formed in the housing; And a stopper formed at one end of the support member to restrain the rotation of the rotating plate by the frictional force between the housing and the rotating plate.

In addition, the support member has a cutout formed in the longitudinal direction at one end thereof, and the stopper is provided with a rotation shaft embedded in the cutout of the support member.

In addition, the stopper is to be formed of a roller that rotates in the cutting hole of the support member about the rotation axis.

The stopper includes a locking member formed of a rubber member that rotates on an outer circumference of the rotating shaft, and the locking member of the rubber material is rolled in contact with the outer circumference of the rotating plate while moving from the incision hole to the end of the supporting member, and the outer peripheral surface of the rotating plate. And contacting the inner wall of the housing so that the rotating plate can no longer be rotated by friction.

Accordingly, the housing and the rotating plate are in contact with the engaging member so that the rotation can be restrained by the friction force; and each includes.

According to another embodiment of the present invention, the present invention provides a refrigerator compartment door for opening and closing the refrigerator compartment; A freezing chamber door formed at a lower portion of the refrigerator body and opened and closed by a drawer type; A drive unit for automatically opening and closing the freezer door; A wire that is a conductive wire for supplying power to the drive unit; And an automatic winding device in which the wire is unwinded when the door is opened and the wire is automatically wound when the door is closed. The automatic winding device includes a winding restraint device that prevents the wire from being automatically wound in a pulled out state. It provides a refrigerator comprising;

According to the aspects of the present invention having the configuration as described above, the present invention in the drawer type door having a self-winding device of the wire so that the wire can be stopped in the drawn state when the door is continuously opened for a required time This will prevent the wire from rewinding.

In the present invention, the rotating plate wound around the wire can be constrained by the stopper, the stopper formed by the roller in a certain direction to rotate so as not to act as a stopper, the roller stops when operating in the opposite direction The rotation is constrained so as to act as a stopper so that the automatic winding of the drawn wire can be stopped in a very simple structure.

The present invention also supports the elastic restoring force of the leaf spring so that the wire is subjected to tension by the leaf spring elastic restoring force of the self-winding device in the state that the door is opened to prevent the wire from being pulled out or broken. Providing a wire winding restraint can improve the durability and convenience of the product.

1 is an elevational view showing a refrigerator provided with a retractable door equipped with a winding-up device of the present invention.
2 is a view showing a self-drawing door according to the prior art.
Figure 3 is a perspective view of the self-winding door equipped with the winding device of the present invention.
Figure 4 is a perspective view of the drawer type door is equipped with a winding restraint device of the present invention.
Figure 5 is a detailed view showing a leaf spring inside the automatic winding apparatus of the present invention.
6 to 8 is a detailed view showing the operation of the winding control device of the present invention.

Hereinafter, with reference to the accompanying drawings, a preferred embodiment of the self-winding door and the refrigerator having the wire wound restraint device according to the present invention will be described in detail.

Prior to this, terms and words used in the present specification and claims should not be construed as being limited to ordinary or dictionary terms, and the inventor should appropriately define the concept of the term to describe its invention in the best way The present invention should be construed in accordance with the meaning and concept consistent with the technical idea of the present invention.

Therefore, the embodiments described in the present specification and the configurations shown in the drawings are merely the most preferred embodiments of the present invention and are not intended to represent all of the technical ideas of the present invention. Therefore, various equivalents It should be understood that water and variations may be present.

The present invention can be applied to any refrigerator including an actuator connected to a wire which is a conducting wire, in addition to the door driving. Hereinafter, the present invention will be described with reference to an example of a refrigerator having a bottom freeze type for convenience of explanation and understanding.

1 is a front view showing the appearance of the refrigerator according to the present invention, Figure 2 is a view showing a self-drawing door according to the prior art, Figure 3 shows a self-winding door equipped with the automatic winding device of the present invention. One perspective view.

1 and 3, the refrigerator has an outer shape formed by a substantially rectangular parallelepiped main body, and a storage space for storing food is formed therein. The storage space of the refrigerator main body 1 is divided up and down so that a refrigerating chamber (unsigned) is formed in the upper portion, while a freezing chamber 2 is formed in the lower portion.

The opened front surface of the refrigerating chamber is shielded by a pair of left and right refrigerating chamber doors 3, and the open front surface of the freezing chamber 2 is shielded by one or a plurality of freezing chamber doors 4.

The refrigerating chamber door (3) is hinged to both sides of the refrigerator main body (1) is composed of a hinged door, the freezer door (4) is slidingly coupled to the refrigerator main body (1) is made of a drawer-type door. Here, the freezing chamber door 4 will be described in detail.

On the inner wall surface of the freezer compartment (2) is provided a rail assembly for withdrawing / entering the freezer compartment door (4) with the basket (5), the freezer door (4) on one side of the rail assembly is a basket (5) With the drive unit 10 is automatically installed to withdraw / withdraw.

The rail assembly is accommodated in a rail housing provided on the inner wall surface of the freezing compartment (2). The rail housings are provided on the left and right side walls of the freezing chamber 2, respectively, and extend from the front end to the rear end of the freezing chamber 2.

In addition, the rail housing may be fixed to the inner wall surface of the freezing compartment 2 by a coupling member such as a separate screw or to be coupled to a bracket (not shown) already mounted on the wall surface of the freezing compartment 2.

The rail assembly is configured such that a plurality of rails are sequentially stacked so as to slide while rolling by respective bearings (not shown) provided therein.

The drive unit 10 includes a drive motor and is engaged with the gear gear formed on the rail by the rotational operation of the drive motor so that the freezing chamber door 4 of the drawing type is automatically drawn out / retracted with the basket 5. do.

The drive motor provided in the drive unit 10 is composed of a bidirectional rotation motor that can selectively rotate in the forward and reverse direction. The rotating shaft of the driving motor is coupled to the driving shaft through an intermediate gear (not shown), and a wire 30, which is a lead wire for applying power to the driving motor, is received in the cable chain 20 to externally drive the driving motor. Electrically connected to the power source, the cable chain 20 is coupled to the middle portion of the lower side of the rail slidingly.

Looking at the process of withdrawing / entering the freezer compartment door 10 in the refrigerator equipped with a safety device according to the present invention as follows.

That is, when the freezing chamber door 4 is pulled forward, the freezing chamber door 4 is pulled forward and the driving motor rotates in the opening direction. Then, the freezer door 4 is pulled out together with the basket 5 while the straight teeth formed on the rail and the teeth formed on the rotation shaft of the driving motor are engaged with each other to rotate in the opening direction. At the same time, since the rail assembly of the freezer compartment door 4 and the rail housing of the freezer compartment 2 are mutually coupled to each other, the rail assembly of the freezing compartment door 4 is slid to the front while gradually sliding relative movement to each other. Then, the freezing chamber door 4 is gradually opened, and the basket 5 is exposed to the outside as much as possible, so that food can be put or stored in the basket 5.

On the other hand, if the freezing chamber door 4 is pushed backward, the freezing chamber door 4 is pulled back to rotate the drive motor in the closing direction. Then, while the teeth of the rail and the teeth of the drive motor rotation shaft is engaged to rotate in the closing direction, the freezer compartment door 4 is introduced into the rear with the basket (5). At the same time, the rail assembly of the freezing compartment door 4 is overlapped while sliding in the opposite direction to the opening direction by the rail housing of the freezing compartment 2 so that the freezing compartment door 4 gradually closes, and the basket 5 is closed. It is completely inserted into the freezer compartment to refrigerated food stored in the basket (5).

When the freezer compartment door 4 moves forward and backward, the driving unit 10 moves together with the freezer compartment door 4. In this process, tension is applied to the wire 30 which is the lead wire, which may cause a problem such as the wire 30 is separated or separated from the driving unit 10. In order to prevent this, it is to be wrapped by the chain 20 to protect the wire wire 30 is the lead wire.

In such a conventional automatic refrigerator take-out system, when the wire 30 connected to the drawer-type freezer door 4 is withdrawn or returned to its original state, the chain 20 is retracted or stretched. In order to protect the existing refrigerator wire 30, the cost competitiveness is reduced by using the chain 20, which is a separate structure, and waste of unnecessary space occurs in the section in which the chain 20 operates.

Hereinafter, the wire breakage prevention and space optimization using the automatic winding apparatus of the present invention will be described with reference to FIGS. 4 and 5. Figure 4 is a perspective view showing a drawer type door is equipped with an automatic winding device of the present invention, Figure 5 is a detailed view showing a leaf spring inside the automatic winding device of the present invention.

2 and 4, the present invention is mounted inside the door of the refrigerator, the drive unit 10 for automatically opening and closing the door in the drawer method; A wire 30 which is a conductive wire for supplying electric power to the driving unit; And an automatic winding device 100, in which the wire 30 is unwound when the door is opened and the wire 30 is automatically wound when the door is closed, the automatic retracting device including the automatic winding device.

In FIG. 4, the driving unit 10 for automatically drawing out the drawer type door of the present invention is not shown. However, as shown in FIG. 2, the driving unit 10 is provided at one side of the freezing chamber door 4. The gear unit is provided on the driving motor and the rotating shaft to engage with the teeth formed on the inner rail of the freezing chamber 2. In this case, the driving unit is formed to electrically connect the wire 30 to the rear of the automatic winding device 100 in FIG. 4.

In FIG. 2, since the separate wire 30 automatic winding device 100 is not provided, the wire 30 is protected in a form surrounded by the chain tube 20, and the driving unit 10 is the freezer door 4. Connected together and move together back and forth.

Accordingly, when the door is closed, the drive unit 10 enters into the freezing compartment 2, and the chain tube 20 including the wire 30 is wrinkled and retracted. On the contrary, when the door is opened, the driving unit 10 is drawn out to the freezing chamber 2 and the chain 20 including the wire 30 is opened.

Although protecting the wire 30 through the chain 20 may prevent the wire 30 from being broken or twisted, unnecessary space is required, and inconsistency may occur depending on the production of the tube chain 20. .

4 and 5, the automatic locking device 100 includes: a housing 110 in which the wire 30 is pulled out, drawn out or wound; A leaf spring having an elastic restoring force in a rotational direction; And a winding shaft 120 in which one end of the leaf spring is fixed inside the housing 110.

In addition, the wire 30 is characterized in that the automatic winding by the elastic force of the leaf spring of the automatic winding device.

When the automatic winding device 100 of the wire of the present invention is used, the pull spring connected to the central axis while the wire 30 wound on the automatic winding device 100 is pulled out when the freezer door 4 is pulled open. The 130 is wound around the winding shaft 120 to generate an elastic stress. When the drawer-type door is pushed to close, the wire 30 is automatically wound and returned to its original position by the elastic stress of the leaf spring 130 acting on the wire 30.

Accordingly, since the wire 30 does not fold or retract, the generation of space occupied by the unnecessary wire 30 can be minimized, and the wire 30 is wound and stored in the winding device 100 without being folded or retracted. Therefore, it is possible to improve durability without causing a problem such as twisting or cutting of the wire (wire, 30), and since the wire wire 30 is wound and takes up the optimized volume in the winding device 100, the refrigerator part Compactness is possible.

5 and 6, the leaf spring 130 is configured to rotate the rotating plate 150 mounted in the housing 110 of the self-winding apparatus 100 by elastic stress. That is, one end of the leaf spring is fixed to the winding shaft 120, which is a rotational central axis of the rotating plate 150, and the other end is fixed at a position spaced a predetermined distance from the center of the rotating plate 150, the leaf spring 130 Rotational elastic stress of the) to act as a rotational stress moment of the rotating plate 150.

Hereinafter, with reference to the accompanying drawings, it will be described in detail with respect to the configuration and operation of the wire winding restraint device 170 of the present invention.

Auto-retractable door (4) equipped with a wire winding restraint device of the present invention is mounted inside the door (4) of the refrigerator, the drive unit for automatically opening and closing the door in the drawer method; A wire 30 which is a conductive wire for supplying electric power to the driving unit; And when the door is open, the wire is unwinded, the automatic winding device 100 is wound automatically when closed; The automatic winding device 100, the wire is automatically wound in the pulled out state It includes; winding device 170 to prevent.

The automatic winding device 170, as shown in Figures 5 and 6, the wire is pulled out, the housing 110 is drawn out or wound; A leaf spring having an elastic restoring force in a rotational direction; A rotating plate 150 to which the leaf spring is mounted and rotates so that the wire is wound; And a winding shaft 120 in which one end of the leaf spring is fixed inside the housing and becomes a central axis of rotation of the rotating plate.

Looking at the configuration and operation relationship of the wire winding device 170 of the present invention with reference to Figure 6 to 7, the winding device 170, the hinge shaft 115 formed in the housing 110 as a center Hinge rotating support member 171; And a stopper 173 formed at one end of the support member 171 to constrain the rotation of the rotating plate by the frictional force of the housing 110 and the rotating plate 150. The wire wound binding device 170 allows the rotating plate 150 to be rotated in one direction in which the wire is unwound, and the wire is drawn out and drawn out so that rotation is constrained in the other direction in which the wire is wound ( It is possible to prevent breakage or breakage of wire by preventing tensile force from being applied to 30).

As shown in FIG. 6, the support member 171 is a rigid member such as a plastic that extends in the longitudinal direction and has a hinge shaft hole 171b formed at the center thereof. The support member 171 is hinged to the rotating shaft 115 protruding from the housing 110 to enable hinge rotation of the lever principle in the hinge shaft hole (171b).

In addition, the support member 171 has a cutting hole 171a formed in the longitudinal direction at one end where the stopper 173 is installed. In addition, the stopper 173 is preferably formed to be rotatable about a rotation shaft 173a, which is a protrusion formed in a central portion of a circular wheel shape.

Accordingly, the stopper 173 is rotatably installed in the cutting hole 171a of the support member, and is installed to be rotatable and move in the longitudinal direction of the support member 171. That is, the stopper 173 is formed of a roller that rotates in the cutting hole 171a of the support member about the rotation shaft 173a.

The stopper 173 includes a locking member 173b formed of a rubber member that rotates on an outer circumference of the rotating shaft 173a, and the locking member 173b of the rubber material contacts the outer circumference of the rotating plate 150. While rolling, the cutting plate 171a moves to the end of the support member 171 and contacts the outer circumferential surface of the rotating plate 150 and the inner wall of the housing 110 so that the rotating plate can no longer be rotated by frictional force.

Accordingly, the housing 110 and the rotating plate 150 are in contact with the locking member 173b, so that the stop rib 117 to be constrained by the friction force;

Hereinafter, with reference to Figures 6 to 8 will be described in detail the operating relationship of the wire winding control device 170 of the present invention.

First, as shown in FIG. 6, the supporting member 171 is formed such that an end where the stopper 173 is installed is in contact with the rotating plate 150 by the weight of the stopper 173.

Next, as shown in Figure 7, when the rotating plate 150 is rotated in the clockwise direction to pull out the wire stopper 173, which is a roller in contact with the outer peripheral surface of the rotating plate 150 to the right in the cut hole (171a) Is moved. As a result, the rotation of the rotating plate 150 is not constrained so that the wire can be drawn out.

In addition, as shown in FIG. 8, when the rotating plate 150 rotates in a counterclockwise direction in which the wire is wound, the stopper 173, which is a roller in contact with the outer circumferential surface of the rotating plate 150, supports the left side in the incision hole 171a. To the end of the member. Accordingly, the locking member 173b of the stopper 173 is pressed against the stop rib 117 of the housing 110 and the rotating plate 150 to restrict the rotation of the rotating plate 150 with strong frictional force.

As such, when the rotating plate 150 rotates in the clockwise direction, the rotation is possible, and thus the wire is drawn out smoothly. When the rotating plate 150 rotates in the counterclockwise direction, the rotation is constrained to constrain the winding of the wire.

The counterclockwise rotation of the rotating plate is the action of the elastic stress moment of the leaf spring contained therein by the wire winding operation. Therefore, the winding restraint device 170 supports the elastic stress of the automatic wire winding so that the tension is not applied to the wire, thereby improving the durability by preventing the breakage of the wire and preventing the occurrence of malfunctions. It becomes possible.

According to another embodiment of the present invention, the present invention provides a refrigerator compartment door 3 for opening and closing the refrigerator compartment; A freezing chamber door (4) formed at a lower portion of the refrigerator body (1) and opened and closed by a drawer type; A drive unit (10) for automatically opening and closing the freezer door (4); A wire 30 which is a conductive wire for supplying power to the driving unit 10; And an automatic winding device 100, in which the wire 30 is released when the door 4 is opened, and the wire 30 is automatically wound when the door 4 is closed, wherein the automatic winding device is pulled out by pulling out the wire. It provides a refrigerator comprising; winding device 170 to prevent the automatic winding in the state.

The above-described embodiment can be easily used by those skilled in the art to which the present invention pertains (hereinafter referred to as a person skilled in the art), and a self-drawing door equipped with a wire winding restraint device and a refrigerator having the same. The present invention is not limited to the above-described embodiment and the accompanying drawings because it is a preferred embodiment to be implemented, and thus the scope of the present invention is not limited thereto. It will be apparent to those skilled in the art that various changes, substitutions, and alterations can be made hereto without departing from the spirit of the present invention, and it is obvious that those parts easily changeable by those skilled in the art are also included in the scope of the present invention.

1: refrigerator body 3: refrigerator door
4: freezer door 5: basket
10: drive unit 20: chain
30: wire (wire)
100: automatic winding device 110: housing
115: hinge axis 117: stop rib
120: winding axis 130: leaf spring
150: rotating plate 170: winding restraint
171: support member 171a: incision hole
171b: hinge shaft ball 173: stopper (roller)
173a: rotating shaft 173b: locking member (rubber member)

Claims

A driving unit mounted inside the door of the refrigerator and automatically opening and closing the door in a drawer manner;
A wire that is a conductive wire for supplying power to the drive unit; And
When the door is opened, the wire is unwinded, when closed the automatic winding device that the wire is automatically wound;
The automatic winding device is a self-winding door equipped with a wire winding restraint device comprising a; winding restraint device for preventing the wire is automatically wound in the pulled out state.

The method of claim 1,
The automatic winding device,
A housing in which the wire is pulled out, or wound;
A leaf spring having an elastic restoring force in a rotational direction;
A rotating plate to which the leaf spring is mounted and rotates so that the wire is wound; And
And a winding shaft on which one end of the leaf spring is fixed within the housing.

3. The method of claim 2,
The winding restraint device,
A support member hinged around a hinge axis formed in the housing; And
And a stopper formed at one end of the support member to restrain the rotation of the rotary plate by the frictional force between the housing and the rotary plate.

The method of claim 3, wherein
The support member is formed with a cutting hole formed in the longitudinal direction at one end,
The stopper is a self-drawing door equipped with a wire winding restraint device, characterized in that the rotary shaft is inserted into the cutting hole of the support member.

The method of claim 4, wherein
The stopper is,
Auto-retractable door equipped with a wire winding restraint device, characterized in that formed by a roller that rotates in the cutting hole of the support member about the rotation axis.

The method of claim 5, wherein
The stopper is,
And a locking member formed of a rubber member rotating around an outer circumference of the rotating shaft.

The method according to claim 6,
The housing and the rotating plate is in contact with the locking member to stop the rotation by the friction force to be restrained; each of the automatic draw-out door equipped with a wire winding restraint, characterized in that it comprises a.

A refrigerator body having a refrigerator compartment and a freezer compartment therein;
A refrigerator compartment door to open and close the refrigerator compartment;
A freezing chamber door formed at a lower portion of the refrigerator body and opened and closed by a drawer type;
A drive unit for automatically opening and closing the freezer door;
A wire that is a conductive wire for supplying power to the drive unit; And
When the door is opened, the wire is unwinded, when closed the automatic winding device that the wire is automatically wound;
The automatic winding device, a refrigerator comprising: a winding restraining device for preventing the wire from being automatically wound in a pulled out state.