KR970005942Y1 - Door opening device of a refrigerator - Google Patents

Abstract

none.

Description

Two-way Door Opener for Home Appliances

1 is a plan sectional view showing an example of a conventional two-way door opening and closing device,

2 is a perspective view of a refrigerator equipped with a two-way door opening and closing device according to the present invention,

Figure 3 is an exploded perspective view showing the configuration of the present invention bidirectional door opening and closing device,

4 is a cross-sectional view taken from the binding state,

5 is a cross-sectional view taken along the line VV of FIG. 2,

6 is a cross-sectional view of the operating state taken along line VI-VI of FIG.

7 is a plan view schematically showing the operation of the present invention.

* Description of the symbols for the main parts of the drawings *

B: main body (of refrigerator) Df, Dr: door of freezer and refrigerator

Hd: Upper and lower hinge holes (of the freezer door)

11,21: upper and lower link motion

12,13: 1st, 2nd link (of upper link motion)

12b, 13b: Through hole (of upper link motion 1st and 2nd link)

14,24: hinge pin 15,25: second connecting pin

18,28: Brackets (top and bottom)

19,29: 1st connection pin 22,23: 1st, 2nd link (of lower link motion)

22b, 23b: Through hole (of lower link motion 1st and 2nd link)

The present invention relates to a door opening and closing device of a home appliance, and more particularly, to a two-way door opening and closing device suitable for use in opening and closing a door, such as a refrigerator.

As is well known, a refrigerator using a cooling cycle is a home appliance that stores various foods stored in a frozen or refrigerated state by circulating air cooled by vaporization heat of a refrigerant in a cavity. Accordingly, the front of the refrigerator is provided with doors for opening and closing the freezer compartment and the refrigerating compartment, respectively, and these doors are usually hinged to one side of the front side of the refrigerator main body so as to be opened and closed only in one direction. By the way, most people use the right hand mainly, and the door of the refrigerator is also generally configured to be opened only from left to right by holding the right hand for convenience of use.

However, when the refrigerator is placed in a kitchen such as a home or a restaurant, it is necessary to consider the relative position with other kitchen appliances such as a gas range or a sink in order to properly select the refrigerator. Since the door can be opened and closed only in one specific direction, there is a high possibility that the opening and closing direction of the door may be mismatched when the food is put into or taken out of the refrigerator during cooking. there was. This problem is particularly acute when the refrigerator is arranged with a small kitchen or other kitchen appliances already installed.

In order to solve such a problem, two-way door opening and closing devices that selectively open and close the door in both directions are provided, and an example thereof will be described with reference to FIG. 1.

In FIG. 1, for example, when the right side of a door (not shown) is opened, the right door shaft S ', which has been caught in the hinge groove 2a' of the right hinge plate 2 ', is relatively holder: The right hinge piece 2 'is rotated counterclockwise about its axis 3' as it exits through the guide groove 1a '). By moving the right lock plate 4 'to the lower end of the guide lock 4a' of the right lock plate 4 'and rotating it counterclockwise with the right stopper pin 6' as the axis, the interlock lever ( 7) is pulled to the right by the rotation interval. Then, the left locking plate 4 coupled to the left side of the interlocking lever 7 by the interlocking pin 8 is rotated counterclockwise with the left stop pin 6 as the axis, and thus the left locking pin 5 is The upper left side guide plate 4a of the locking plate 4 is moved to restrain the left hinge plate 2 from being rotated. Therefore, when the right side of the door is opened, the hinge plate 2 on the left side is locked and the left side is not opened. On the contrary, when the left side of the door is opened, the hinge plate 2 'on the right side is locked and the right side is not opened. The remainder B is a refrigerator body, and 9 and 9 'are torsion springs for elastic biss of the left and right hinge plates 2 and 2', respectively, in a predetermined direction, and 3 is the left shaft and S is The left door shaft 1a is the left guide groove of the holder 1.

By the way, such a conventional two-way door opening and closing device has a complicated configuration consisting of a large number of components not only is very difficult to manufacture but also requires a lot of labor, thereby causing a cost increase of the refrigerator. In addition, the interconnection operation of the left and right hinge plate (2) (2 ') and the interlocking lever (7) connecting them is made via a separate left and right lock plate (4) (4'), respectively, so the opening and closing operation of the door is There was also a problem that was not smooth.

The object of the present invention is very simple configuration in view of the above-mentioned conventional problems, and can easily open and close the door in both directions as needed, bidirectional of home appliances that can be opened and closed operation very smoothly It is to provide a door opening and closing device.

In order to achieve the above object, the two-way door opening and closing device of the home appliance according to the present invention is fixed to each other so as to face each other on the upper and lower sides of the product body, and a plurality of brackets, one end of which protrudes toward the front of the product body, respectively. ) And a pair of upper and lower portions each having first and second links having mutually rotatably connected through-holes and having through-holes formed coaxially at the other end, respectively, and positioned at the upper and lower portions of the door, respectively. A first connection pin fixed to the link motion and the protruding end of the brackets and rotatably inserted into one side of the through hole of the first links, and detachably coupled to one side of the through hole of the second links. Second connecting pins respectively inserted into and fixed to the hinge holes coaxially formed at one side of the upper and lower ends of the second link; And further characterized in that the portions thereof are formed by having a (locking ball) ball plurality of locking takes each fitted elastically on the other side the through hole of the first link which is resilient bias corresponding to protrude outwardly.

Accordingly, the present invention has a very simple configuration compared to the prior art, and the door can be opened and closed easily and smoothly in both directions as needed, so that the convenience and reliability of home appliances, especially refrigerators, which are adopted, as well as cost can be improved. It has a great effect on savings.

Such specific features and other advantages of the present invention will become more apparent from the following description of the preferred embodiments with reference to the accompanying drawings, the present invention will be described by taking a state applied to the refrigerator as an example.

In FIGS. 2 to 6, the refrigerator includes a freezer compartment F and a refrigerator compartment R partitioned by the partition wall W and provided at an upper portion and a lower portion of the main body B, respectively. (Df) (Dr) is also provided separately in the upper and lower front surfaces of the body (B) to open and close the freezing chamber (F) and the refrigerating chamber (R), respectively.

Accordingly, the two-way door opening and closing device of the present invention is also provided in the freezer compartment door (Df) and the refrigerating compartment door (Dr), respectively, and the configurations thereof are the same, so for convenience of description, the configuration of the present invention will be described as an example of the freezer compartment door (Df). do.

As shown, the bidirectional door opening and closing device according to the present invention includes a pair of upper and lower link motions 11 supporting the freezing compartment door Df at the upper and lower sides so as to selectively open and close the left and right directions with respect to the main body B. 21 and two brackets 18 and 28 for supporting the respective link motions 11 and 21 to the main body B.

A plurality of fixing holes 18b and 28b are formed in one of the brackets 18 and 28, and support holes 18a and 28a are formed in the other. The brackets 18 and 28 are arranged so as to face each other on one side of the partition wall W, which partitions the upper and lower portions of the body B, that is, the freezing compartment F and the refrigerating compartment R, and then the fixing holes 18b ( It is fastened with a screw 20 to the fastening hole Hb of the main body B through 28b). At this time, the brackets 18 and 28 are fixed such that the coupling holes 18a and 28a protrude forward of the main body B.

Meanwhile, the upper and lower link motions 11 and 21 are composed of two layers of links 12 and 13 and 22 and 23, and the first and second links 12 and 13 and 22 and 23 are mutually connected. The corresponding end is connected so that relative rotation is possible.

To this end, hinge holes 12a, 13a, 22a and 23a are coaxially formed at one end of the first and second links 12 and 13 and 22 and 23, and the hinge holes 12a and 13a and 22a. Hinge pins 14 and 24 are respectively inserted into the 23a. At this time, each of the hinge pieces 14 and 24 is forcibly fitted into one of the hinge holes 12a, 13a, 22a and 23a of the first and second links 12 and 13 and 22 and 23, respectively. Relative rotation is possible.

In addition, through holes 12b and 13b and 22b and 23b for connecting the brackets 18 and 28 and the freezer door Df to the other ends of the first and second links 12 and 13 and 22 and 23, respectively. ) Are formed to be coaxial with each other.

Accordingly, the first connecting pins 19 and 29 are fixed to the support holes 18a and 28a of the brackets 18 and 28 by interference fits, so that the first of the two link motions 11 and 21 is fixed. Rotationally inserted into one of the links 12 and 22 through-holes 12b and 22b, the two link motions 11 and 21 are connected to and supported by the body B through the brackets 18 and 28, respectively. . One of the second links 13 and 23 through-holes 13b and 23b of the two link motions 11 and 21 is forcibly held in the hinge hole Hd coaxially formed at the upper and lower ends of the freezer door Df. The second connecting pins 15 and 25 inserted into the fitting are respectively screwed through the threaded portions 15a and 25a. Accordingly, each of the link motions 11 and 21 is positioned at the upper and lower ends of the freezer compartment door Df to operate together.

In this way, the other side of the through-holes 13b and 23b of each of the second links 13 and 23 to which the second connection pins 15 and 25 are coupled, that is, the first links 12 and 22, A portion of the locking balls 17 and 27, which protrude outwardly and elastically fit into the other side of the through-holes 12b and 22b of the first link 12 and 22, are respectively inserted to be movable. Two locking balls 17 and 27 are respectively disposed outwardly in the through holes 13b and 23b of the second link 13 and 23 between the balls 17 and 27 and the second connecting pins 15 and 25, respectively. Compression coil springs 16 and 26 for elastic biasing are interposed.

The refrigerator generally includes a freezer compartment door (Df) and a refrigerator compartment door (Df) separately. Preferably, the lower bracket 18 of the freezer compartment door Df has a function of an upper bracket of the refrigerator compartment door Dr side. do. Accordingly, as shown in FIG. 5, the through hole 22b of the first link 22 of the lower link motion 21 on the freezer door Df side and the upper link motion 11 'of the refrigerator door Dr side of the freezer compartment door Df are shown. The first link 12 'through holes 12b' are rotatable at both ends of one hinge pin 29 'fixed to penetrate the lower bracket 28 support hole 28a on the freezer door Df side. By being inserted so as to be connected to the lower bracket 28 on the freezer compartment door Df side.

The remaining reference numeral 13 'is the second link of the upper link motion 11' of the refrigerating compartment door Dr side, 21 'is the lower link motion of the refrigerating compartment door Dr side, and 22' and 23 'are the first and second links thereof. , 28 'is a lower bracket on the refrigerator compartment door Dr side.

Referring to the operation of the bidirectional door opening and closing device according to the present invention configured as described above in parallel with FIG.

In FIG. 7, (a) the first and second links 12, 13 and 22 of the upper and lower link motions 11 and 21 with the freezer door Df closed with respect to the body B. 23 are overlapped with each other, and the locking balls 17 and 27 are elastically fitted into the through holes 12a and 22a of the respective first links 12 and 22 so that the two links 12 and 13 ( 22, 23) will be fixed.

In this state, as shown in (b), when the freezer door Df is opened in the right direction with respect to the main body B, the first and second links 12 and 13 of the upper and lower link motions 11 and 21 are opened. (22) and (23) are overlapped with each other and fixed by the locking balls (17) (27), and thus, the first connection pins (19) (29) of the brackets (18) (28) together with the freezer door (Df). They rotate in the counterclockwise direction with the axes as an axis to open the freezer compartment F of the main body B. Subsequently, when the freezer door Df is closed, the respective link motions 11 and 21 are also rotated clockwise around the first connecting pins 19 and 29 of the brackets 18 and 28, thereby freezing the chamber F. ) Will be closed.

As shown in the next (c), when the freezer door Df is opened to the left side with respect to the main body B, the first links 12 and 22 of the upper and lower link motions 11 and 21 are both ends thereof. The first connection pins 19 and 29 of the brackets 18 and 28 and the front surface of the main body B are respectively restrained from rotation.

As a result, as shown in FIG. 6, the locking balls 17 and 27 held in the through holes 12b and 22b of the first links 12 and 22 are applied to the freezing chamber door Df. The compression coil springs 16 and 26 are compressed into sliding contact with the outer ends of the through holes 12b and 22b, and are completely inserted into the through holes 13b and 23b of the second links 13 and 23. . This releases the binding force of the second link 13, 23 to the first link 12, 22 of the two link motions 11, 21, thereby allowing each of the second links 13, 23 to freeze. The freezing chamber F of the main body B is opened by rotating clockwise about the hinge pieces 14 and 24 of the two link motions 11 and 21 together with the door Df. At this time, the locking balls 17 and 27 are partially detached from the first link 12 and 22 at the same time, and the part of the locking balls 17 and 27 is restored by the compression coil springs 16 and 26. (23) It protrudes outward through the through holes 13b and 23b.

When the freezer door Df is closed in the open state as described above, the second links 13 and 23 of the link motions 11 and 21 are also rotated counterclockwise together with the freezer door Df to protrude. The locking balls 17 and 27 are in contact with the first links 12 and 22. Subsequently, the locking balls 17 and 27 compress the compression coil springs 16 and 26 in sliding contact with the first links 12 and 22 by the closing force of the freezer door Df. (13) (23) By completely entering the through holes 13b and 23b, the freezer compartment door Df is closed with respect to the main body B to close the freezer compartment F. As shown in FIG. At this time, the first and second links 12, 13, 22, and 23 through holes 12b, 13b, 22b, and 23b of the two link motions 11 and 21 are in communication with each other. (27) protrudes to the outside by the restorative elasticity of the compression coil springs (16) and (26), and is fitted into the first links (12) and (22) through holes (12b) and (22b).

Meanwhile, the refrigerating compartment door Dr is also opened and closed in left and right directions by the same method of opening and closing the freezing compartment door Df as described above.

Although the present invention has been described with reference to a specific refrigerator by way of example, this is merely for the purpose of illustration, the invention is not limited to this, it will be obvious that it can be widely applied to the door of other products having a cavity therein.

As described above, according to the present invention, the door of the refrigerator and the like can be freely opened and closed freely in both left and right directions only with a pair of link motions and locking balls. The number of components and manufacturing work can be significantly reduced. Therefore, the present invention can greatly improve the convenience and manufacturability of commercial products such as refrigerators, etc., as well as having a very excellent effect of reducing the cost.

Claims (1)

Apparatus for selectively opening and closing the door installed in the product main body to block the cavity from the outside in both left and right directions, respectively fixed to the upper and lower sides of the product body (B) to face each other, one end is A plurality of brackets (18) (28) each protruding forward of the product body (B); The first and second links 12, 13, 22, and 23 having corresponding through ends 12b, 13b, 22b, and 23b coaxially rotatably connected to each other and coaxially formed on the other end, respectively. A pair of upper and lower link motions 11 and 21 positioned at upper and lower portions of the door Df; First connecting pins 19 and 29 fixed to the protruding ends of the brackets 18 and 28 and rotatably inserted into one of the through holes 12b and 22b of the first links 12 and 22, respectively. )and; A second insertion hole fixed to one of the through holes 13b and 23b of the second links 13 and 23, and a second insertion hole fixed to the hinge holes Hd coaxially formed at one side of the upper and lower ends of the door Df. Connecting pins 15 and 25; The second links 13 and 23 are respectively supported on the other side in the through holes 13b and 23b, and a portion thereof is elastically biased to protrude outward so that the corresponding first links 12 and 22 penetrate. A two-way door opening and closing device for a home appliance, characterized by comprising a plurality of locking balls (17) (27) that are elastically fitted into the other hole (12b, 22b), respectively.