KR101738242B1 - Rail assembly of refrigerator - Google Patents

Abstract

The present invention relates to a rail assembly used in a refrigerator drawer, wherein the rail assembly is composed of a first frame, a second frame and a three-stage frame of a middle frame so that when the drawer is drawn out, .

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a rail assembly for a refrigerator,

The present invention relates to a rail assembly of a refrigerator.

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rail assembly for a refrigerator, and more particularly, to a rail assembly for a refrigerator, which is installed inside a freezer compartment or a freezer compartment and draws a drawer for taking out food in a drawer, And to a roller coupling device connected to a drawer for a refrigerator for the convenience of convenience.

Generally, a refrigerator is divided into a refrigerator compartment and a freezer compartment, and a door is installed at the front of the refrigerator to conserve the cold air of the refrigerator compartment and the freezer compartment. In addition, in the case of a storage space such as a refrigerator compartment, a drawer for distributing the use of food so as not to spread the odor of food is essentially installed. In particular, since the drawer as described above must be capable of being drawn out from the interior of the room, it may be connected to a drawer, for example, in the interior of the refrigerator.

1 is a view showing a structure of a rail assembly coupled to both sides of a conventional drawer.

Referring to FIG. 1, a conventional roller coupling device connected to a drawer in a hull includes a plurality of stretching portions 66, 68, 70 and a plurality of rollers 72, 74. The stretchable and contractible portion 68 can be slidably moved into the stretchable and contractible portion 70 which is fixed on the rollers 74 and the stretchable and contractible portion 66 moves on the rollers 72 Can be slidably moved into the stretchable and contractible portion (68). The stretchable and contractible portion 70 may be fixed to the inner wall of the refrigerator by a combination of a plurality of fixing portions, for example, screws and bolts. The outer end portion 80 of the stretchable and contractible portion 66 can be fixed to one side of the drawer by a plurality of fixing portions 80.

Accordingly, when the user pulls the drawer to draw the food, the stretchable portion 66 and the intermediate stretchable portion 68, to which the drawer is fixed, slide from the stretchable portion 70 fixed to the inner wall of the refrigerator, So that the drawer is drawn out. On the contrary, when the user pushes the drawer to draw the drawer into the hood, the stretchable portion 66 and the intermediate stretchable portion 68, to which the drawer is fixed, slide from the stretchable portion 70 fixed to the inner wall of the refrigerator So that the drawer is drawn into the refrigerator.

The conventional rail assembly of the refrigerator has the following problems.

First, in the drawing process of the drawer, when the drawer is pulled out completely, the frame is detached by the roller.

Secondly, there is a problem in that the manufacturing process is complicated and the process cost is increased depending on the area and the number of the rollers and the frame.

SUMMARY OF THE INVENTION The present invention is proposed to solve the above problems.

According to an embodiment of the present invention, a refrigerator rail assembly coupled to both sides of a drawer includes a first frame fixed to a sidewall of a storage compartment of a refrigerator; A first stopper detachably coupled to a front end of the first frame; A second frame fixed to a side of the drawer accommodated in the storage chamber; A middle frame having the first frame connected to one side and the second frame connected to the other side; A first roller unit mounted on one side of the middle frame and fitted to the first frame to allow the middle frame to move in a state connected to the first frame; And a second roller unit mounted on the other side of the middle frame, the second roller unit being fitted to the second frame and making the second frame movable in a state connected to the middle frame.

According to the roller coupling device of the drawer for a refrigerator according to the embodiment of the present invention, the following effects can be obtained.

First, by forming a detachable stopper on a frame connected to the inner side wall of the refrigerator, it is possible to solve the problem that the frames are detached from each other, and the remaining structure can be easily assembled with the frame connected to the inner wall of the refrigerator.

Secondly, the shape of the middle frame is simplified, and only the minimum roller is attached, thereby reducing manufacturing cost of the frame and the roller.

1 is a side view of the structure of a rail assembly respectively coupled to both sides of a conventional draw.
2 is a perspective view of a refrigerator having a rail assembly of a refrigerator according to an embodiment of the present invention.
3 illustrates a rail assembly of a refrigerator according to an embodiment of the present invention.
4 is a perspective view of a middle frame of a rail assembly of a refrigerator according to an embodiment of the present invention.
5 is a perspective view of a first frame of a rail assembly of a refrigerator according to an embodiment of the present invention.
6 is a perspective view of a second frame of a rail assembly of a refrigerator according to an embodiment of the present invention.
7 is a view showing an engagement relationship between a first stopper and a first frame in a rail assembly configuration of a refrigerator according to an embodiment of the present invention;
8 is a view showing a structure in which a rail assembly of a refrigerator according to an embodiment of the present invention is extended.
9 is a view illustrating a structure of a drawer of a rail assembly of a refrigerator according to an embodiment of the present invention.
10 is a view illustrating a structure of a draw-in of a rail assembly of a refrigerator according to an embodiment of the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings, which will be readily apparent to those skilled in the art to which the present invention pertains. The present invention may be embodied in many different forms and is not limited to the structures and methods described herein.

In the embodiment of the present invention, the drawer 200 for a refrigerator is disposed inside the refrigerating compartment for the sake of convenience of explanation. However, the drawer 200 for a refrigerator of the present invention includes a refrigerator compartment and a refrigerating compartment, It is noted that the present invention is applicable to any freezer room, and is applicable not only to the form of a refrigerator.

2 is a perspective view of a refrigerator having a rail assembly of a refrigerator according to an embodiment of the present invention.

Referring to FIG. 2, the refrigerator according to the embodiment of the present invention includes an outer case 10 formed in a substantially rectangular parallelepiped shape.

An inner case 11 is formed in the outer case 10 and a refrigerating chamber 12 and a freezing chamber 13 are formed in the inner case 11 for refrigerating or freezing food.

The refrigerator compartment door 21 rotates the front surface of the refrigerating compartment 12 to both left and right sides and the freezing compartment door 22 rotates the front surface of the freezing compartment 13 to both left and right sides, 13 in the form of a double door on the left and right sides, respectively.

The front of the refrigerator compartment door 21 is further provided with a structure for the convenience of the user such as a home bar or a dispenser, and a detailed description of such a construction will be omitted.

Meanwhile, a drawer 200 is installed in the refrigerating chamber 12 to receive a storage object such as vegetables. The drawer 200 is installed to be movable in the forward and backward directions within the refrigerating chamber 12 to improve the accessibility to objects stored therein.

The drawer 200 is disposed movably within the refrigerator compartment 12 and / or the freezer compartment 13 of the refrigerator. In particular, the drawer 200 is coupled to the rail assembly 300 according to the embodiment of the present invention, And / or back and forth in the freezing chamber. In addition, the drawer 200 is formed with a receiving space for accommodating a storage object such as vegetables therein.

Further, on both sides of the drawer 200, a draw opening is formed so that the roller coupling device 300 can be engaged.

Hereinafter, the rail assembly 300 connecting the drawer 200 to the refrigerator will be described.

3 is a view illustrating a rail assembly of a refrigerator according to an embodiment of the present invention. FIG. 4 is a perspective view of a middle frame of a rail assembly of a refrigerator according to an embodiment of the present invention, and FIG. 5 is a perspective view of a first frame of a rail assembly of a refrigerator according to an embodiment of the present invention. FIG. 6 is a perspective view of a second frame of a rail assembly of a refrigerator according to an embodiment of the present invention, and FIG. 7 is a perspective view illustrating a coupling relationship between a first stopper and a first frame of a rail assembly of a refrigerator according to an embodiment of the present invention. Fig. And FIG. 8 is a view showing a structure in which a rail assembly of a refrigerator according to an embodiment of the present invention is extended.

3 to 8, a rail assembly 300 according to an embodiment of the present invention may include a middle frame 310, a first frame 320, and a second frame 330.

The middle frame 310 may include a first coupling portion 311, a second coupling portion 312, and a coupling portion 313. The first frame 320 may be connected to the first coupling portion 311 and the second frame 330 may be coupled to the second coupling portion 312. In addition, the first coupling portion 311 and the second coupling portion 312 of the middle frame 310 may be arranged to be parallel to each other. In this case, the middle frame 310 may include a connecting portion 313 for extending the first and second engaging portions 311 and 312. The middle frame 310 is formed in such a manner that the first and second coupling portions 311 and 312 are parallel to each other and the coupling portion 313 is formed in a shape The upper end portion and the lower end portion of the second engagement portion 312 can be extended. That is, the front surface of the middle frame 310

or

. ≪ / RTI > That is, in the middle frame 310, the connection portion 312 is bent at the lower end of the first coupling portion 311, and the second coupling portion 313 is bent downward at the end of the coupling portion 312 . ≪ / RTI >

The middle frame 310 may include a first roller unit fixed to the first engaging part 311 and the middle frame 310 may include a second roller unit . ≪ / RTI > In detail, the first roller unit includes a first roller 314 mounted at a position near the rear end of the first engagement portion 311, and a second roller 314 spaced apart from the first roller 314 by a predetermined distance forward And the second roller unit may include a third roller 315 mounted at a point near the front end of the second engaging portion 312, And a fourth roller 317 mounted at any point of the second engagement portion 312 spaced rearwardly from the third roller 316 by a predetermined distance.

More specifically, the first roller 314 rotates about the center of the first roller 314 of the middle frame 310 so that the center axis of the first roller 314 and the extending direction of the connecting portion 313 are parallel to each other. And the second roller 315 is fixed to the rear end of the first roller 314 at a distance of less than half the length of the middle frame 310 from the fixed position of the first roller 314 toward the long side of the first coupling portion 311, The first roller 314 may be fixed at the same height as the fixing position of the first roller 314. For example, the second roller 315 may be fixed to the center of the first coupling portion 311. The third roller 316 is disposed on the front side of the second engaging portion 312 of the middle frame 310 so that the center axis of the third roller 316 and the extending direction of the connecting portion 313 are parallel to each other, And the fourth roller 317 is fixed at a distance of less than half the length of the middle frame 310 from the fixed position of the third roller 316 toward the long side of the second engaging portion 312 And can be fixed at the same height as the fixing position of the third roller 316 in the spaced apart position. For example, the fourth roller 317 may be fixed to the center of the second engagement portion 312.

The distance between the first roller 314 and the second roller 315 and the distance between the third roller 316 and the fourth roller 317 are set to be less than half of the length of the middle frame However, if the drawer 200 is pulled out from the inside of the refrigerating chamber and the roller coupling device 300 of the present invention can support the weight of the drawer 200, the first roller 314 And the distance between the second roller 315 and the distance between the third roller 316 and the fourth roller 317 is not limited.

In detail, the first roller 314, the second roller 315, the third roller 316 and the fourth roller 317 are rollers of the same size, and a rubber ring is coupled to the outer circumferential surface of each roller . The rubber ring prevents noise generated from the contact surface when the first roller 314 to the fourth roller 317 rotate in contact with the first frame 320 and the second frame 330 It is effective.

The first frame 320 is fixed to the inner surface of the refrigerating chamber and is coupled to the first coupling portion 311 of the middle frame 310 so that the drawer 200 can be drawn out The middle frame 310 can be reciprocated in the same direction as the long side direction of the middle frame 310.

In detail, the first frame 320 may be formed with a plurality of engaging openings 323 for engaging one side of the first frame 320 with the inner side of the refrigerating chamber. For example, the coupling opening may connect an opening formed in the refrigerating chamber to a screw communicating therewith to fix one side of the first frame 320 to the inner side of the refrigerating chamber.

The first frame 320 may be connected to the first coupling portion 311 of the middle frame 310. The first frame 320 has a first roller engaging portion 321 to which the rollers can be coupled to engage with the first frame portion 320 of the first frame 320, The roller 314, and the second roller 315. [0043] In detail, the first roller engaging portion 321 may be formed in the form of a rail on which the first roller 314 and the second roller 315 are rotatable on the other side of the first frame 320. In detail, the first roller coupling portion 321 is bent in such a manner that the upper and lower surfaces of the first frame 320 surround the first roller 314 and the second roller 315, Can be slid in contact with the upper and lower surfaces of the first roller 314 and the second roller 315. That is, the first frame 320 has a longitudinal section bent in a U-shape, and a first upper surface and a first lower surface of a C-shaped vertical section are respectively connected to the first roller 314 and the second roller 315 So that the first roller 314 and the second roller 315 are slidable.

In this case, a detachable first stopper 322 may be formed at the rear end of the first frame 320. When the first frame 320 moves along the first engaging portion 311 by the rotation of the first roller 314 and the second roller 315, 2 rollers 315, so that the first frame 320 is not detached from the middle frame 310.

In addition, the first stopper 322 may be detachably attached to the front end of the first frame 320.

The first stopper 322 is disposed on the upper surface of the first roller engaging portion 321 disposed at the front end of the first frame 320 in the first roller engaging portion 321 formed on the first frame 320, And / or the bottom surface. Hereinafter, the holes formed on the upper surface and the lower surface of the first roller engagement portion 321 will be described as embodiments.

The first stopper 322 may include at least one protrusion 322a and an elastically deformable portion 322b. The protrusions 322a may be formed at both ends of the elastically deformable portion 322b. The elastic deforming portion 322b may be formed to have the same length as the distance between the upper surface and the lower surface of the first roller engaging portion 321. The elastic deformation portion 322b extends from the protrusion 322a and has a cutout 322c formed on one side thereof. Then, when a force is applied from the outside, it can be elastically deformed so as to have a reduced length than a length in which no external force is applied. That is, when a force is externally applied to the elastic deforming portion 322b, the first roller engaging portion 321 is elastically deformed to have a length shorter than the distance between the upper surface and the lower surface of the first roller engaging portion 321, It is possible to return to the same length as the distance between the upper surface and the lower surface of the first roller engagement portion 321. That is, the first stopper 322 may be bent at least once to be elastically deformed.

The user applies a force to the elastic deforming portion 322b of the first stopper 322 and then engages the protruding portion 322a with the insertion hole formed in the upper surface and the lower surface of the first roller engaging portion 321, The first stopper 322 can be attached to the first frame 320 by removing the force applied to the elastic deforming portion 322b. The user can remove the first stopper 322 from the first frame 320 by removing the protrusion 322a from the groove through the same process.

The second frame 330 is fixed to both sides of the drawer 200 and is coupled to the second engaging portion 312 of the middle frame 310 so that the drawer 200 is pulled out from the inside of the refrigerating chamber, And can reciprocate in the same direction as the long side direction of the middle frame 310 so as to be drawn in.

In detail, the second frame 330 may have a plurality of engaging openings 333 formed on one side thereof for engaging with both sides of the drawer. For example, the engagement openings 333 and the openings formed on both side surfaces of the drawer are connected by a connecting thread, whereby one side of the second frame 330 can be fixed to both sides of the drawer.

In addition, the second frame 330 may be connected to the second coupling portion 312 of the middle frame 310. The second frame 330 has a second roller engaging portion 331 on which a roller can be engaged to engage with the third frame 312 fixed to the second engaging portion 312 of the middle frame 310, The roller 316, and the fourth roller 317, respectively. In detail, the roller engaging portion 331 may be formed in the form of a rail on which the third roller 316 and the fourth roller 317 are rotatable on the other surface of the second frame 330.

That is, the second frame 330 has a vertical section bent in a U-shape, and the second upper surface and the second lower surface of the C-shaped vertical section are respectively connected to the third roller 316 and the fourth roller 317 So that the third roller 316 and the fourth roller 317 are slidable.

In this case, a second stopper 332 may be formed at the rear end of the second frame 330. The second stopper 332 serves to prevent the second frame 330 from being separated from the middle frame 310 when the drawer is drawn out. When the second frame 330 moves along the second engaging portion 312 by the rotation of the third roller 316 and the fourth roller 317, 4 rollers 317 to prevent the second frame 330 from being detached from the middle frame 310. In detail, the second stopper 332 may be fixed to the rear end of the second frame 330.

A protrusion 318 may be formed on the front end of the first coupling portion 311 of the middle frame 310. When the first frame 320 is slid so that the front end of the first frame 320 is closer to the front end of the middle frame 310, the protrusion 318 formed at the front end of the first coupling portion 311, So that the first frame 320 is not detached from the middle frame 310.

A protrusion need not be formed at the rear end of the second coupling portion 312 of the middle frame 310 because the second frame 330 is coupled to the drawer 200, So that the user can completely remove the drawer 200 from the refrigerating chamber.

The rail assembly 300 of the refrigerator according to the embodiment of the present invention is connected to one side surface and the other side of the drawer 200 to allow the user to draw the drawer 200. In detail, the roller coupling device 300 connected to one side of the drawer 200 and the roller coupling device 300 connected to the other side of the drawer 200 may be formed symmetrically with respect to each other .

The operation of the rail assembly 300 of the refrigerator according to the embodiment of the present invention will be described below.

9 is a view illustrating a structure of a drawer of a rail assembly of a refrigerator according to an embodiment of the present invention.

Referring to FIG. 9, the drawer 200 is pulled through a handle formed on the front surface of the drawer 200 so that the user draws or draws the stored contents stored in the drawer 200. In this case, when the second frame 330 fixed to both sides of the drawer 200 is connected to the middle frame 310, the front end of the second frame 330 is connected to the middle frame 310 310). Further, the second stopper formed at the rear end of the second frame 330 is caught by the fourth roller 317, so that the movement of the second frame 330 is stopped.

In the state where the middle frame 310 is connected to the first frame 320 fixed to both sides of the inside of the refrigerator compartment so that the front end of the middle frame moves away from the front end of the first frame 320 Move. In addition, the first stopper formed at the front end of the first frame 320 is caught by the second roller 315, so that the movement of the middle frame 310 is stopped.

According to the above operation, the drawer 200 having both sides fixed to the second frame 330 is drawn out from the inside of the refrigerating chamber to the outside so that the user can take out the stored contents stored in the drawer 200 Or store the food inside the drawer 200.

10 is a view illustrating a structure of a draw-in of a rail assembly of a refrigerator according to an embodiment of the present invention.

Referring to FIG. 10, the structure of the drawer 200 of the rail assembly 300 of the refrigerator of the present invention can be confirmed. After the user draws or draws the stored matter into the drawer 200, the drawer 200 is pushed into the refrigerator through the handle formed on the front of the drawer 200. In this case, in a state where the second frame 330 fixed to both sides of the drawer 200 is connected to the middle frame 310, the rear end of the second frame 33 is connected to the middle frame 310, (310). When the rear end of the second frame 330 is caught by the protrusion 318 formed at the rear end of the first coupling portion 311 of the middle frame 310, the movement of the second frame 330 is stopped.

The rear end of the middle frame 310 is connected to the rear end of the first frame 320 while the middle frame 310 is connected to the first frame 320 fixed to both sides of the refrigerating chamber, As shown in FIG. When the front end of the first frame 320 is hooked on the protrusion 318 formed at the front end of the second engaging portion 312 of the middle frame 310, the movement of the middle frame 310 is stopped.

According to the above-described operation, the drawer 200 is drawn from the outside into the refrigerator compartment.

Claims (10)

A first frame fixed to a side surface of the storage compartment of the refrigerator;
A second frame fixed to a side of the drawer accommodated in the storage chamber;
A middle frame having the first frame connected to one side of the first side and the second frame connected to the lower side of the second side;
A first roller unit connected to the middle frame and disposed between one side of the middle frame and the first frame;
A second roller unit connected to the middle frame and disposed between the other side of the middle frame and the second frame; And
And a first stopper mounted on the first frame and restricting movement of the first roller unit,
Wherein the first frame comprises:
A first side fixed to the side of the storage chamber;
A first upper surface that is laterally bent at an upper end of the first side surface; And
And a first lower surface that is laterally bent at a lower end of the first side surface,
Wherein the second frame comprises:
A second side fixed to a side of the drawer;
A second upper surface that is laterally bent at an upper end of the second side surface; And
And a second lower surface that is laterally bent at a lower end of the second side surface,
An upper end of the first stopper is fixed to the first upper surface,
A lower end of the first stopper is fixed to the first lower surface,
Further comprising a protrusion protruding from a front end of the middle frame, the protrusion being engaged with a front end of the first frame,
Wherein a maximum retraction length of the middle frame is limited by the protrusions. The method according to claim 1,
In the middle frame,
A horizontally connected connection;
A first engaging portion bent perpendicularly upward from one end of the connecting portion and to which the first roller unit is mounted;
And a second engagement portion that is bent perpendicularly from the other end of the connection portion to the downward direction and on which the second roller unit is mounted. 3. The method of claim 2,
Wherein the first roller unit comprises:
A first roller mounted at a position near the rear end of the first engaging portion,
And a second roller mounted at a position spaced a predetermined distance forward from the first roller in the first engagement portion,
And the second roller unit comprises:
A third roller mounted at a point near the front end of the second engaging portion,
And a fourth roller mounted at a point spaced rearwardly from the third roller at a predetermined distance in the second engagement portion. The method of claim 3,
Wherein an upper surface and a lower surface of each of the first roller units are in contact with the first upper surface and the first lower surface of the first frame,
And upper and lower surfaces of each of the second roller units are in contact with the second upper surface and the second lower surface of the second frame. 3. The method of claim 2,
And a second stopper provided at a rear end of the second frame to prevent the second frame from being separated from the middle frame when the drawer is drawn out. 3. The method of claim 2,
Wherein an upper end portion of the first stopper is coupled to the first upper surface of the first frame and a lower end portion of the first stopper is coupled to the first lower surface of the first frame, And is removable from the first upper surface and the first lower surface. The method according to claim 6,
Wherein the first stopper includes a pair of projections protruding from an upper end and a lower end, respectively,
Wherein the first frame includes an insertion hole formed in an upper surface and a lower surface, respectively, and into which the pair of protrusions are inserted, respectively. 8. The method of claim 7,
Wherein the first stopper is bent at least once so as to have a predetermined elastic force. The method according to claim 1,
And a rubber ring is coupled to an outer circumferential surface of the first roller unit and the second roller unit.
The method according to claim 1,
Wherein a front end of the first upper surface is formed at a predetermined distance from a front end of the first frame,
And the first stopper is detachably coupled to the first upper surface of the rail.

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