CN116157639A - Hinge structure of refrigerator - Google Patents

Abstract

The hinge structure of the refrigerator (1) includes: an upper hinge part (20), a first guide pin and a second guide pin arranged on the upper hinge part (20), an upper guide part (30) installed on the door (11), And the upper guide groove (34) with which the first upper guide pin and the second upper guide pin engage. The upper guide groove (34) is controlled by the first upper guide pin and the second upper guide pin, thereby performing the opening and closing action of the door (11). When the door (11) performs the opening and closing action, the first guide pin and the second guide pin The imaginary rotation center O of the pin is located on the front side of the door (11) with respect to the main body (10) when the door (11) is closed.

Description

Hinge structure of refrigerator

technical field

The invention relates to a hinge structure of a refrigerator.

Background technique

Patent Document 1 discloses a hinge structure of a refrigerator. The hinge structure is provided with a guide block on the door, a rotation shaft is provided on the hinge main body, and a rotation shaft groove is provided on the guide block. According to the structure of the hinge main body, the gravitational force and frictional force of the door are distributed to the first plate main body and the second plate main body of the hinge main body, thereby reducing wear and extending the service life of the door of the refrigerator.

prior art literature

patent documents

Patent Document 1: Japanese PCT Publication No. 2020-521102

Contents of the invention

The present invention provides a hinge structure of a refrigerator capable of opening a door even when the refrigerator is installed close to a wall.

The hinge structure of the refrigerator of this invention is a hinge structure of the refrigerator which supports a door openably and closably with respect to a main body among the refrigerators which have a main body and a door. It includes: an upper hinge part and a lower hinge part installed on the main body; a first upper guide pin and a second upper guide pin provided on the upper hinge part, and a first lower guide pin and a second lower guide pin provided on the lower hinge part pins; an upper guide member attached to the upper portion of the door and a lower guide member attached to the lower portion of the door; and an upper guide groove provided on the upper guide member to engage with the first upper guide pin and the second upper guide pin, and A lower guide groove provided in the lower guide member to engage with the first lower guide pin and the second lower guide pin. The upper door guide groove is controlled by the first upper guide pin and the second upper guide pin, and the lower guide groove is controlled by the first lower guide pin and the second lower guide pin. When the door is opened and closed, the imaginary rotation center of the first upper guide pin and the second upper guide pin, and the imaginary rotation center of the first lower guide pin and the second lower guide pin are relative to each other when the door is closed. The main body is located on the front side of the door.

Description of drawings

FIG. 1 is a perspective view showing a refrigerator according to Embodiment 1. FIG.

FIG. 2 is an exploded perspective view showing a hinge structure of the refrigerator according to Embodiment 1. FIG.

FIG. 3 is a perspective view showing the structure of an upper hinge according to Embodiment 1. FIG.

FIG. 4 is an exploded perspective view showing the structure of the upper hinge in Embodiment 1. FIG.

FIG. 5 is a perspective view showing a lower hinge structure in Embodiment 1. FIG.

FIG. 6 is an exploded perspective view showing a lower guide structure in Embodiment 1. FIG.

FIG. 7A is an explanatory view showing the operation of the upper guide groove and the upper guide pin in Embodiment 1. FIG.

FIG. 7B is an explanatory view showing the operation of the upper guide groove and the upper guide pin in Embodiment 1. FIG.

FIG. 7C is an explanatory view showing the operation of the upper guide groove and the upper guide pin in Embodiment 1. FIG.

FIG. 7D is an explanatory view showing the operation of the upper guide groove and the upper guide pin in Embodiment 1. FIG.

FIG. 8A is an explanatory view showing the operation of the lower guide groove and the lower guide pin in Embodiment 1. FIG.

FIG. 8B is an explanatory view showing the operation of the lower guide groove and the lower guide pin in Embodiment 1. FIG.

FIG. 8C is an explanatory view showing the operation of the lower guide groove and the lower guide pin in Embodiment 1. FIG.

FIG. 8D is an explanatory view showing the operation of the lower guide groove and the lower guide pin in Embodiment 1. FIG.

FIG. 9 is an exploded perspective view showing a lower guide structure in Embodiment 2. FIG.

FIG. 10 is a perspective view of a lower hinge member according to Embodiment 2. FIG.

FIG. 11A is an explanatory view showing the operation of the lower guide groove and the lower guide pin in Embodiment 2. FIG.

FIG. 11B is an explanatory view showing the operation of the lower guide groove and the lower guide pin in Embodiment 2. FIG.

FIG. 11C is an explanatory view showing the operation of the lower guide groove and the lower guide pin in Embodiment 2. FIG.

FIG. 11D is an explanatory view showing the operation of the lower guide groove and the lower guide pin in Embodiment 2. FIG.

Detailed ways

(knowledge that forms the basis of the present invention, etc.)

The inventors have found that when the refrigerator is installed close to the wall of the installation place, if the rotation center of the rotation shaft is located inside the door, when the door is opened, the front corner of the door will move from the main body of the refrigerator to the inside of the door. The sides stick out and the door cannot be opened. The subject of the present invention has been made to solve this problem.

Therefore, the present invention provides a hinge structure of a refrigerator capable of opening a door even when the refrigerator is installed close to a wall.

Embodiments will be described in detail below with reference to the drawings. However, unnecessary detailed explanations are sometimes omitted. For example, detailed descriptions of already known items or repeated descriptions of substantially the same configurations may be omitted. This is for the purpose of avoiding unnecessary redundancy in the following description and facilitating the understanding of those skilled in the art.

In addition, the drawings and the following descriptions are provided for those skilled in the art to fully understand the present invention, and are not intended to limit the subject matter described in the scope of the claims.

(Embodiment 1)

Hereinafter, Embodiment 1 will be described using FIGS. 1 to 7D .

[1-1. Structure]

[1-1-1. Structure of refrigerator]

Fig. 1 is a perspective view schematically showing a refrigerator to which the hinge structure of the present invention is applied. Fig. 2 is an exploded perspective view showing a schematic hinge structure of the refrigerator.

As shown in FIG. 1 , refrigerator 1 has a box-shaped main body 10 . A door 11 is provided in front of the main body 10 . The door 11 is openably and closably provided on the main body 10 through a hinge structure 12 . In the present embodiment, the door 11 is composed of two doors 11, and the two doors 11 are respectively installed in a way of opening doors.

[1-1-1. Structure of hinge structure 12]

FIG. 3 is a perspective view showing the upper hinge structure 12 . FIG. 4 is an exploded perspective view showing the upper hinge structure 12 . FIG. 5 is a perspective view showing the lower hinge structure 12 . FIG. 6 is an exploded perspective view showing the lower hinge structure 12 .

In addition, since the hinge structure 12 of the door 11 is left-right symmetrical, in the following description, only the hinge structure 12 of the door 11 located in the right side as seen from the front of the refrigerator 1 is demonstrated.

As shown in FIG. 2 , flat upper hinge members 20 are attached to upper portions on both sides of the main body 10 . In the present embodiment, the upper hinge member 20 is arranged near the upper portion of the door 11 .

As shown in FIGS. 3 and 4 , the upper hinge part 20 includes: a base 21 fixed on the main body 10; a pin bearing 22 extending from the front end of the base 21 to a position overlapping with the upper part of the door 11; The upper notch 23 formed by cutting the side of the end side of the body 10 (the front end side of the main body 10 ).

On the lower surface of the pin supporting portion 22, the first upper guide pin 24 and the second upper guide pin 25 are provided so as to protrude downward. The first upper guide pin 24 and the second upper guide pin 25 are arranged at a predetermined interval, and the line connecting the center of the first upper guide pin 24 and the center of the second upper guide pin 25 has a predetermined angle with respect to the front surface of the door 11. The way is arranged obliquely.

On the upper side of the door 11 (the upper right side of the door 11 ), an upper hinge attachment recess 13 is formed by cutting a part of one side and the rear side. Thus, an upper cover wall 14 is formed on the front side of the door 11 . An opening 15 is formed in the upper hinge mounting recess 13 of the door 11 (see FIG. 2 ).

An upper guide member 30 is attached to the upper hinge attachment recess 13 so as to close the opening 15 .

More specifically, the door 11 is formed of a front panel 11a forming the front surface, a door case 11b forming the outer frame of the front panel 11a, an inner panel 11c, and a heat insulating material (not shown) inside surrounded by them. . On the door 11, an upper hinge mounting recess 13 is formed by cutting the side and rear sides of the door pocket 11b on the upper side of the door 11, and is mounted so as to close the opening 15 formed in the upper hinge mounting recess 13. There is an upper guide part 30 .

The upper guide member 30 includes: a flat plate portion 31 closing the opening 15 ; an upper guide concave portion 32 protruding below the flat plate portion 31 ; and positioning portions 33 formed at corners of the flat plate portion 31 . The upper guide member 30 is fixed to the door 11 by screwing unillustrated screws into the door 11 through the positioning portion 33 .

Also, the upper guide recess 32 has a bottom surface 32a, and when the door 11 is filled with a heat insulating material (not shown), the heat insulating material does not enter the upper guide recess 32 through the bottom face 32a.

In addition, in the present embodiment, as described above, the upper guide member 30 and the door pocket 11b are formed separately, but the upper guide member 30 and the door pocket 11b may be integrally formed.

An upper guide groove 34 opening to the flat plate portion 31 is formed inside the upper guide concave portion 32 . In this embodiment, the upper guide groove 34 includes: an arc-shaped first upper guide portion 35 extending rearward from the front side of the door 11; and the arc-shaped third upper guide portion 37 connected to the rear of the second upper guide portion 36 . As a result, the upper guide groove 34 is formed in a substantially J-shape in plan view.

The opening of the upper guide groove 34 includes a rib-shaped protrusion 38 formed upward from the flat plate portion 31 . Rib-shaped protrusions 38 are formed on the entire outer circumference of the upper guide groove 34 .

The first upper guide pin 24 and the second upper guide pin 25 are engaged with the upper guide groove 34 . A structure is formed in which the rib-shaped protrusion 38 slides with the upper hinge member 20 when the door 11 is opened and closed.

When door 11 is opened from the closed state, first upper guide portion 35 is formed in order to prevent door 11 from protruding toward a side wall located near the installation place of refrigerator 1 . In addition, the second upper guide portion 36 is formed so that the door 11 can be opened to 90°.

In order to open the door 11 at an opening angle of 90° or more, specifically about 120°, a third upper guide portion 37 in which the second upper guide pin 25 is located is formed.

As shown in FIG. 2 , the lower hinge parts 40 are installed under the upper hinge parts 20 on both sides of the main body 10 . As shown in FIGS. 2 and 5 , in the present embodiment, the lower hinge member 40 is disposed near the lower portion of the door 11 .

As shown in FIG. 6 , the lower hinge member 40 includes: a flat base 41 , a flange 42 extending downward from the rear end of the base 41 , and a lower notch 45 .

The lower hinge member 40 is fixed to the main body 10 by fastening its flange portion 42 to the front surface of the main body 10 with screws or the like.

The first lower guide pin 43 and the second lower guide pin 44 are provided on the base 41 of the lower hinge member 40 so as to protrude upward. The first lower guide pin 43 and the second lower guide pin 44 are provided at positions overlapping the first upper guide pin 24 and the second upper guide pin 25 in plan view.

On the lower side of the door 11, a lower hinge attachment recess 16 is formed by cutting one side and the rear side of the door 11. As shown in FIG. Thus, the lower cover wall 17 is formed on the front side of the door 11 .

A lower opening (not shown) is formed in the lower hinge mounting recess 16 of the door 11 . A lower guide member 50 is attached to the lower hinge attachment recess 16 so as to close the lower opening of the lower hinge attachment recess 16 .

The lower guide member 50 includes: a flat plate 51 closing the lower opening of the lower hinge mounting recess 16; a lower guide recess 52 protruding toward the upper side of the flat plate 51; The lower guide member 50 is fixed to the door 11 via the positioning portion 53 with screws (not shown) or the like.

More specifically, similarly to the upper guide member 30, a lower hinge mounting recess 16 is formed by cutting the side and rear sides of the door pocket 11b on the lower side of the door 11 to close the lower hinge mounting recess 16. A lower guide member 50 is attached to a lower opening (not shown) in the upper portion 16 .

Moreover, the lower guide recessed part 52 has the bottom surface part 52a. Accordingly, when filling the door 11 with a heat insulating material (not shown), the heat insulating material does not pass through the bottom surface portion 52 a and enter the lower guide recess 52 .

In addition, as mentioned above, the lower guide member 50 and the door pocket 11b are formed separately, but the lower guide member 50 and the door pocket 11b may be integrally formed.

A lower guide groove 54 opening on the flat plate portion 51 is formed inside the lower guide concave portion 52 . In this embodiment, the lower guide groove 54 includes: a first lower guide portion 55 extending rearward in an arc shape from the front side of the door 11; the second lower guide part 56 ; and the arc-shaped third lower guide part 57 connected to the rear of the second lower guide part 56 . Accordingly, the lower guide groove 54 is formed in a substantially J-shape in plan view, and the lower guide groove 54 is formed at a position overlapping the upper guide groove 34 in plan view.

In addition, the opening of the lower guide groove 54 includes a rib-shaped protrusion 58 formed downward from the flat plate portion 51 , and the rib-shaped protrusion 58 is formed on the entire outer periphery of the lower guide groove 54 .

In addition, as shown in FIG. 6 , a first flange portion 43 a and a second flange portion 44 a protruding from the respective bases of the first lower guide pin 43 and the second lower guide pin 44 to the entire outer circumference of the guide pins are formed.

The first lower guide pin 43 and the second lower guide pin 44 are engaged in the lower guide groove 54 , and the rib-shaped protrusion 58 formed on the entire outer periphery of the opening of the lower guide groove 54 is aligned with the first protrusion of the first lower guide pin 43 . The edge part 43a and the 2nd flange part 44a of the 2nd lower guide pin 44 slide.

[1-2. Action]

Hereinafter, the operation|movement of the hinge structure 12 of the refrigerator 1 comprised as mentioned above is demonstrated.

7A to 7D are explanatory diagrams showing the operation of the upper guide groove 34 and the upper guide pins 24 and 25 . In FIGS. 7A to 7D , the door 11 is viewed from above, and the upper guide groove 34 and the upper guide pins 24 and 25 are shown for convenience. In addition, in FIG. 7A - FIG. 7D, the case where the refrigerator 1 is installed close to the wall is shown.

FIG. 7A shows a state where the door 11 is closed. In this state, the first upper guide pin 24 is positioned at the front end portion of the upper guide groove 34 , and the second upper guide pin 25 is positioned behind the upper guide groove 34 .

At this time, the virtual rotation center O is located on the front side of the door 11 and on one side of the door 11 (the right side of the door 11 ).

Here, the virtual rotation center O is an intersection point of a perpendicular line to the upper guide groove 34 at the position of the first upper guide pin 24 and the position of the second upper guide pin 25 .

In the case of FIG. 7A , the virtual rotation center O is located on the front side of the front panel 11 a of the door 11 (the lower side in FIG. 7A ) and on one side of the door 11 in the left-right direction. , the door 11 starts to open with the imaginary center of rotation O as the axis.

Generally speaking, if the opening and closing operation of the door 11 is performed on one axis, the door 11 does not move around the one axis but rotates, so the front side corner 11d of the door 11 located on the front side of the axis is separated from the main body. The side of 10 protrudes outwards. Therefore, if refrigerator 1 is installed in close contact with the wall, door 11 cannot be opened.

However, in this embodiment, since the virtual rotation center O is located on the front side of the front panel 11a of the door 11 and on one side of the door 11, when the door 11 is opened, the front corner of the door 11 11d does not protrude from the side of the main body 10 . Thereby, even when refrigerator 1 is installed close to the wall, it is possible to perform the opening operation of door 11 .

As shown in FIG. 7B , when the door 11 is further opened, the first upper guide pin 24 is located in the middle of the first upper guide portion 35 of the upper guide groove 34 , and the second upper guide pin 25 is located at the center of the upper guide groove 34 . The second upper guide part 36 .

At this time, the virtual rotation center O is located substantially in front of the door 11 and inside one side of the door 11 . In this way, as the door 11 is opened, the positional relationship between the first upper guide pin 24 and the second upper guide pin 25 and the upper guide groove 34 changes, so the position of the imaginary center of rotation O also moves toward the inner side of the door 11. move.

In the state where the door 11 is opened about 90°, as shown in FIG. 7C , the first upper guide pin 24 is positioned at the second upper guide portion 36 of the upper guide groove 34 , and the second upper guide pin 25 is positioned at the second upper guide portion 34 of the upper guide groove 34 . 3 The upper guide part 37.

At this time, the virtual rotation center O is located on the inner side of one side of the door 11, but since the door 11 is opened, the one side corner (front side corner) 11d of the door 11 is not exposed to the side of the main body 10. .

As shown in FIG. 7D , in this embodiment, the door 11 can be further opened to about 120°. In this state, the first upper guide pin 24 is located at approximately the same position as that in FIG. 7C , and the second upper guide pin 25 is located at the upper part. The deepest part of the third upper guide portion 37 of the guide groove 34 .

The virtual rotation center O at this time coincides with the first upper guide pin 24 .

Thus, in this embodiment, the third upper guide portion is formed by forming the first upper guide portion 35 in an arc shape with a large radius of curvature, and forming the second upper guide portion 36 in an arc shape with a small radius of curvature. 37, so that the door 11 can be opened and closed while moving the virtual rotation center O.

In addition, when the door 11 is opened, the end of the upper cover wall 14 of the door 11 is located in the upper notch 23 of the upper hinge member 20 , so the door 11 does not touch the upper hinge member 20 .

In addition, a large load is applied to the lower hinge member 40 in particular due to the dead weight of the door 11 and food storage in the door 11 . Even in such a case, the rib-shaped protrusion 58 of the lower guide groove 54 slides with the first flange portion 43a of the first lower guide pin 43 and the second flange portion 44a of the second lower guide pin 44 while sliding the door. 11 opening and closing action, so the friction force during the opening and closing action becomes smaller. Therefore, it is possible to reduce the door opening force required for the user to open the door 11 .

In the case of the present embodiment, the radius of curvature of the third upper guide portion 37 is larger than the radius of curvature of the second upper guide portion 36 and smaller than the radius of curvature of the first upper guide portion 35 .

In addition, the size relationship of the radii of curvature of the first upper guide portion 35, the second upper guide portion 36, and the third upper guide portion 37 can be determined according to the wall thickness of the door 11, that is, the thickness of the door pocket 11b (see FIG. 1 ) (Fig. 7A to FIG. 7D (up and down directions on the paper) to change. For example, if the thickness of the door pocket 11b is large, the radius of curvature of the second upper guide portion 36 can be increased so as to approach the radius of curvature of the first upper guide portion 35 .

Moreover, by further increasing the thickness of the door pocket 11b, the curvature radii of the first upper guide portion 35 and the second upper guide portion 36 can be made the same, and the virtual rotation center O is also located on the same side. Therefore, the first upper guide portion 35 and the second upper guide portion The upper guide portion 36 can serve as one upper guide portion, and the third upper guide portion 37 connected thereto can constitute the upper guide groove 34 .

Therefore, since the upper guide groove 34 is constituted by two upper guide portions having different radii of curvature, the door 11 can be rotated more smoothly than when the upper guide groove is constituted by three upper guide portions having different radii of curvature.

The second upper guide portion 36 has an arc shape, but may also be a curved shape, and may be formed by connecting a plurality of linear shapes if the thickness of the door pocket 11b is large.

The first upper guide portion 35 may be formed in a linear shape, and the second upper guide portion 36 and the third upper guide portion 37 may be formed in an arc shape.

As shown in FIGS. 7A to 7D , the upper guide groove 34 is formed by three arc-shaped guides having different radii of curvature, but it may also be formed by four or more different arc-shaped guides.

Accordingly, even when the thickness of the door pocket 11b is small, the upper guide groove 34 can be formed.

Therefore, regardless of the thickness of the door pocket 11b, the upper guide groove 34 can be formed, and even when the refrigerator 1 is installed close to the wall, the opening operation of the door 11 can be performed smoothly.

Next, the operation of the lower guide groove 54 and the lower guide pins 43 and 44 will be described.

8A to 8D are explanatory views showing the relationship between the lower guide groove 54 and the lower guide pins 43 , 44 . In FIGS. 8A to 8D , the door 11 is viewed from below, and the lower guide groove 54 and the lower guide pins 43 and 44 are shown for convenience. FIG. 8A shows a state where the door 11 is closed. In this state, the first lower guide pin 43 is positioned at the front end of the lower guide groove 54 , and the second lower guide pin 44 is positioned behind the lower guide groove 54 .

At this time, the virtual rotation center O is located on the front side of the door 11 and on one side of the door 11 .

Here, the virtual rotation center O is an intersection point of a vertical line at the position of the first lower guide pin 43 and the position of the second lower guide pin 44 and the lower guide groove 54 . In addition, the position of the virtual rotation center O in FIGS. 8A to 8D is the same as the positional relationship when the vertical rotation in FIGS. 7A to 7D is reversed, so illustration is omitted.

The situation of FIG. 8A is a state in which the imaginary center of rotation O is located on the front side (upper side of FIG. 8A ) of the front panel 11a of the door 11 and on one side of the left-right direction of the door 11. If the door 11 is opened, the door will 11 Start the opening operation with the imaginary rotation center O as the axis.

Even in the case of the lower guide groove 54 and the lower guide pins 43, 44, as in the case of the upper guide groove 34 and the upper guide pins 24, 25, even when the refrigerator 1 is installed close to the wall, the door 11 can be closed. opening action.

As shown in FIG. 8B , when the door 11 is further opened, the first lower guide pin 43 is located in the middle of the first lower guide portion 55 of the lower guide groove 54 , and the second lower guide pin 44 is located at the center of the lower guide groove 54 . The second lower guide part 56 .

At this time, the virtual rotation center O is located substantially in front of the door 11 and inside one side of the door 11 . In this way, as the door 11 is opened, the positional relationship between the first lower guide pin 43 and the second lower guide pin 44 and the lower guide groove 54 changes, so the position of the virtual rotation center O also moves inwardly of the door 11. move.

In the state where the door 11 is opened about 90°, as shown in FIG. 8C , the first lower guide pin 43 is positioned at the second lower guide portion 56 of the lower guide groove 54 , and the second lower guide pin 44 is positioned at the third lower portion of the lower guide groove 54 . The lower guide part 57 .

At this time, the virtual rotation center O is located on the inner side of one side of the door 11, but since the door 11 is opened, the one side corner (front side corner) 11d of the door 11 is not exposed.

As shown in FIG. 8D , in this embodiment, the door 11 can be further opened to about 120°. In this state, the first lower guide pin 43 is located at substantially the same position as that in FIG. 8C , and the second lower guide pin 44 is located at the lower part. The deepest part of the third lower guide portion 57 of the guide groove 54 .

The virtual rotation center O at this time coincides with the first lower guide pin 43 .

In this way, even in the case of the lower guide groove 54 and the lower guide pins 43, 44, the first lower guide portion 55 is formed into a circle with a large radius of curvature as in the case of the upper guide groove 34 and the upper guide pins 24, 25. The second lower guide portion 56 is formed in an arc shape with a small radius of curvature, and the third upper guide portion 37 is formed in an arc shape so that the door 11 can be opened while moving the imaginary center of rotation O. close action.

In addition, since the end of the lower cover wall 17 of the door 11 is located in the lower notch 45 of the lower hinge member 40 when the door 11 is opened, the door 11 does not touch the lower hinge member 40 .

In the case of the present embodiment, the lower guide portion will be described. The radius of curvature of the third lower guide portion 57 is larger than that of the second lower guide portion 56 and smaller than that of the first lower guide portion 55 .

The magnitude relationship of the radii of curvature of the first lower guide portion 55, the second lower guide portion 56, and the third lower guide portion 57 can be determined according to the wall thickness of the door 11, that is, the thickness of the door pocket 11b (the pages of FIGS. 8A to 8D ). up and down direction) to change. For example, if the thickness of the door pocket 11b is large, the radius of curvature of the second lower guide portion 56 can be increased to approach the radius of curvature of the first lower guide portion 55 .

In addition, by increasing the thickness of the door pocket 11b, the curvature radii of the first lower guide part 55 and the second lower guide part 56 can be made the same, and since the virtual rotation center O is also on the same side, the first lower guide part 55 and the second lower guide part 55 can be made the same. 2. The lower guide portion 56 serves as one lower guide portion, and the third lower guide portion 57 connected thereto can constitute the lower guide groove 54.

Therefore, since the lower guide groove 54 is formed of two lower guide portions with different radii of curvature, the door 11 can be rotated more smoothly than when the lower guide groove is formed of three lower guide portions with different radii of curvature.

The second lower guide portion 56 has an arc shape, but may also be a curved shape, and may be formed by connecting a plurality of linear shapes if the thickness of the door pocket 11b is large.

The first lower guide portion 55 may be formed in a linear shape, and the second lower guide portion 56 and the third lower guide portion 57 may be formed in an arc shape.

As shown in FIGS. 8A to 8D , the lower guide groove 54 is formed by three arc-shaped guides having different radii of curvature, but it may also be formed by four or more different arc-shaped guides.

Thereby, even when the thickness of the door pocket 11b is small, the lower guide groove 54 can be formed.

Therefore, regardless of the thickness of the door pocket 11b, the lower guide groove 54 can be formed, and even when the refrigerator 1 is installed close to the wall, the opening operation of the door 11 can be performed smoothly.

As mentioned above, although the lower guide part was demonstrated, the upper guide part is formed similarly.

[1-3. Effects, etc.]

As described above, the hinge structure of this embodiment includes: the upper hinge member 20 and the lower hinge member 40 (hinge members) attached to the main body 10; The guide pin 25; the first lower guide pin 43 and the second lower guide pin 44 provided on the lower hinge member 40; the upper guide member 30 and the lower guide member 50 (guide member) mounted on the upper and lower sides of the door 11; The upper guide groove 34 (guide groove) on the guide member 30 and in which the first upper guide pin 24 and the second upper guide pin 25 engage; and the lower guide member 50 and the first lower guide pin 43 and the second lower guide pin The lower guide groove 54 (guide groove) with which the pin 44 engages. The upper guide groove 34 of the door 11 is controlled by the first upper guide pin 24 and the second upper guide pin 25 , and the lower guide groove 54 is controlled by the first lower guide pin 43 and the second lower guide pin 44 to open and close. Regarding the virtual rotation center O of the first upper guide pin 24, the second upper guide pin 25, the first lower guide pin 43, and the second lower guide pin 44 when the door 11 is opened and closed, when the door 11 is closed, It is located on the front side of the door 11 with respect to the main body 10 .

As a result, the imaginary rotation center O of the first upper guide pin 24 and the second upper guide pin 25 , and the first lower guide pin 43 and the second lower guide pin 44 when the door 11 performs the opening and closing operation is equal to that of the door 11 . Since it is located on the front side of the door 11 in the closed state, when the door 11 is opened, the front corner 11 d of the door 11 can be prevented from being exposed to the side of the main body 10 . Therefore, even when refrigerator 1 is installed close to the wall, door 11 can be opened.

In addition, in this embodiment, the upper guide groove 34 and the lower guide groove 54 (guide groove) include at least two guide portions formed in an arc shape, and are constituted by one guide groove that is controlled while moving the virtual rotation center O. .

Thereby, the two guide pins are positioned in one guide groove connecting at least two arc-shaped guide portions, and the door 11 is rotated simultaneously, so that the door 11 can be opened and closed while moving the virtual rotation center O. Therefore, in the configuration using one guide groove, the virtual rotation center O when the door 11 performs the opening and closing operation can be located on the front side of the door 11 in the closed state of the door 11 . Therefore, even when refrigerator 1 is installed close to the side wall, the opening operation of door 11 can be performed.

In this embodiment, the upper cover wall 14 and the lower cover wall 17 (outer cover wall) are formed in the door 11 so that the upper hinge part 20 and the lower hinge part 20 provided on the main body 10 cannot be seen when the user stands on the front of the door 11. The member 40 (hinge member) and the front side of the upper guide member 30 and the lower guide member 50 (guide member) are covered.

Thus, the front side of the upper hinge member 20, the lower hinge member 40, the upper guide member 30, and the lower guide member 50 can be covered in a manner invisible from the front of the door 11 by the upper cover wall 14 and the lower cover wall 17, thereby hide it. Therefore, the upper hinge member 20 , the lower hinge member 40 , the upper guide member 30 , and the lower guide member 50 cannot be seen from the front side of the door 11 , and the appearance can be improved.

In the present embodiment, upper notches are formed in the upper hinge member 20 and the lower hinge member 40 (hinge members) to receive the ends of the upper cover wall 14 and the lower cover wall 17 (outer cover wall) when the door 11 is opened. 23 and the lower notch 45 (notch).

Accordingly, when the door 11 is opened, the ends of the upper cover wall 14 and the lower cover wall 17 enter the upper notch 23 and the lower notch 45 . Therefore, the opening operation of the door 11 can be performed smoothly.

(Embodiment 2)

[2-1. Structure]

Next, Embodiment 2 of the present invention will be described. FIG. 9 is an exploded perspective view showing a lower guide structure in Embodiment 2. FIG. FIG. 10 is a perspective view of a lower hinge member according to Embodiment 2. FIG. As Embodiment 2, the structure which integrally formed the lower guide member 60 and the latch part 69 which has a stopper function is demonstrated.

The relationship between the upper guide member and the upper hinge member and the structure hidden by the cover so that the hinge member cannot be seen from the front are the same as those in Embodiment 1, and description thereof will be omitted.

As shown in FIG. 9 , a lower guide member 60 is attached to the lower portion of the door 11 .

In addition, a stopper 80 that contacts the lower guide member 60 to control the opening of the door 11 is attached to the lower portion of the door 11 .

The lower hinge member 70 shown in FIG. 10 is provided in the main body 10 of the refrigerator 1. As shown in FIG. The lower hinge part 70 includes: a flat base part 71 , a flange part 72 extending downward from the rear end of the base part 71 , a lower notch part (stopper abutting part) 75 and a locking part integrally formed on the lower guide part 60 . The latch locking portion 76 of the latch portion 69 .

The flange portion 72 is fastened to the front of the main body 10 with screws or the like, thereby fixing the lower hinge member 70 to the main body 10 .

A first lower guide pin 73 and a second lower guide pin 74 are provided on the base portion 71 of the lower hinge member 70 so as to protrude upward. The first lower guide pin 73 and the second lower guide pin 74 are provided at positions overlapping with the first upper guide pin 24 and the second upper guide pin 25 described in Embodiment 1 in plan view.

Moreover, the 1st flange part 73a and the 2nd flange part 74a which protrude from the base part of each of the 1st lower guide pin 73 and the 2nd lower guide pin 74 to the outer periphery of a guide pin are formed.

In addition, in FIG. 9 , a step housing portion 11 e is formed on the door casing 11 b of the door 11 to house the flat plate portion 61 and the lower guide recess 62 of the lower guide member 60 . The shape of the step housing portion 11e serves as the positioning of the lower guide member 60 .

The lower guide member 60 is integrally formed with a flat plate portion 61, a lower guide concave portion 62 protruding toward the upper surface side of the flat plate portion 61, a fixing portion 63 fixed to the step receiving portion 11e of the door casing 11b with screws or the like, and a stopper. Latch part 69 .

In the step housing part 11e, the lower guide member 60 and the stopper 80 overlap up and down, and are fixed via the fixing part 63. As shown in FIG.

In addition, a lower guide groove 64 opening on the flat plate portion 61 is formed inside the lower guide concave portion 62 . In this embodiment, as shown in FIGS. 11A to 11D described later, the lower guide groove 64 includes: a first lower guide portion 65 extending in an arc shape from the front side of the door 11 to the rear; 1. An arc-shaped second lower guide portion 66 with a small lower guide portion 65 ; and an arc-shaped third lower guide portion 67 connected to the rear of the second lower guide portion 66 .

Accordingly, the lower guide groove 64 is formed in a substantially J-shape in plan view, and the lower guide groove 64 is formed at a position overlapping with the upper guide groove 34 described in Embodiment 1 in plan view.

In addition, the opening of the lower guide groove 64 includes a rib-shaped protrusion 68 formed downward from the flat plate portion 61 , and is formed on the entire outer periphery of the lower guide groove 64 .

In the lower guide groove 64, the first lower guide pin 73 and the second lower guide pin 74 are engaged, and the rib-shaped protrusion 68 formed on the entire outer periphery of the opening of the lower guide groove 64 and the first protrusion of the first lower guide pin 73 are engaged. The edge portion 73a and the second flange portion 74a of the second lower guide pin 74 slide.

[2-2. Action]

Next, the operation of the lower guide groove 64 and the lower guide pins 73 and 74 will be described.

11A to 11D are explanatory views showing the relationship between the lower guide groove 64 and the lower guide pins 73 , 74 . In FIGS. 11A to 11D , the door 11 is viewed from below, and the lower guide groove 64 and the lower guide pins 73 and 74 are shown for convenience.

FIG. 11A shows a state where the door 11 is closed. In this state, the first lower guide pin 73 is positioned at the front end of the lower guide groove 64 , and the second lower guide pin 74 is positioned behind the lower guide groove 64 .

At this time, the virtual rotation center O is located on the front side of the door 11 and on one side of the door 11 .

Here, the virtual rotation center O is an intersection point of a vertical line at the position of the first lower guide pin 73 and the position of the second lower guide pin 74 and the lower guide groove 64 .

In the case of FIG. 11A , the virtual rotation center O is located on the front side of the front panel 11 a of the door 11 (the upper side in FIG. 11A ) and on one side of the door 11 in the left-right direction. If the door 11 is opened, , the door 11 starts to open with the imaginary center of rotation O as the axis.

Both the first lower guide pin 73 and the second lower guide pin 74 are located on the first lower guide portion 65 .

In addition, when the door 11 in FIG. 11A is closed, the latch portion 69 remains engaged with the latch locking portion 76 and functions as a stopper so that the door 11 does not open. A gasket 90 is provided on the main body 10 side of the door 11 , and in the state of FIG. 11A , a state in which the gasket 90 seals between the door 11 and the main body 10 can be maintained.

In the case of the lower guide groove 64 and the lower guide pins 73 and 74, as in the case of the lower guide groove 54 and the lower guide pins 43 and 44 of Embodiment 1, even when the refrigerator 1 is installed close to the wall, The opening operation of the door 11 is also possible.

As shown in FIG. 11B , when the door 11 is further opened, the latch portion 69 is disengaged from the latch locking portion 76 . In addition, the first lower guide pin 73 is located in the middle of the first lower guide portion 65 of the lower guide groove 64 , and the second lower guide pin 74 is located in the second lower guide portion 66 of the lower guide groove 64 .

At this time, the virtual rotation center O is located substantially in front of the door 11 and inside one side of the door 11 . In this way, as the door 11 is opened, the positional relationship between the first lower guide pin 73 and the second lower guide pin 74 and the lower guide groove 64 changes, so the position of the virtual rotation center O also moves inwardly of the door 11. move.

In the state where the door 11 is opened about 90°, as shown in FIG. 11C , the first lower guide pin 73 is positioned at the second lower guide portion 66 of the lower guide groove 64, and the second lower guide pin 74 is positioned at the second lower guide portion 64 of the lower guide groove 64. 3 lower guide part 67.

At this time, the virtual rotation center O is located on the inner side of one side of the door 11, but since the door 11 is opened, the one side corner (front side corner) 11d of the door 11 is not exposed.

As shown in FIG. 11D , in this embodiment, when the door 11 is opened to 120° from the closed state, the stopper 80 abuts against the stopper contact portion 75 of the lower hinge member 70 to control the opening of the door 11 . In this state, the first lower guide pin 73 is located at substantially the same position as in FIG. 11C , and the second lower guide pin 74 is located at the deepest part of the third lower guide portion 67 of the lower guide groove 64 .

The virtual rotation center O at this time coincides with the first lower guide pin 73 .

In this way, even in the case of the lower guide groove 64 and the lower guide pins 73 and 74, the first lower guide portion 65 is formed to have a curvature similar to the case of the lower guide groove 54 and the lower guide pins 43 and 44 in Embodiment 1. The second lower guide portion 66 is formed into an arc shape with a large radius, and the second lower guide portion 66 is formed into an arc shape with a small radius of curvature, and the third lower guide portion 67 is further formed into an arc shape, so that the virtual rotation center O can be moved while moving the door. 11 opening and closing actions.

In addition, when the door 11 is opened, the stopper 80 abuts against the stopper abutment portion 75, and the opening of the door 11 is controlled so as not to open more than 120°, so that the end of the door 11 does not abut against the lower hinge. Part 70.

[2-3. Effects, etc.]

As described above, in the hinge structure of the present embodiment, similarly to the first embodiment, in the state where the door is closed, the virtual rotation of the first lower guide pin and the second lower guide pin when the door 11 is opened and closed can be made. The center O is located on the front side of the door 11 , and when the door 11 is opened, the front corner 11 d of the door 11 can be prevented from being exposed to the side of the main body 10 . Therefore, even when refrigerator 1 is installed close to the wall, door 11 can be opened.

The upper guide groove 34 and the lower guide groove 64 (guide groove) include at least two guide portions formed in an arc shape, and are constituted by one guide groove controlled while moving the virtual rotation center O.

Thereby, the door 11 is rotated while the two guide pins are positioned in one guide groove connecting at least two arc-shaped guide portions, and the door 11 can be opened and closed while the virtual rotation center O is moved. action. Therefore, in the structure using one guide groove, when the door 11 is closed, the virtual rotation center O when the door 11 is opened and closed can be positioned on the front side of the door 11 . Therefore, even when refrigerator 1 is installed close to the side wall, the opening operation of door 11 can be performed.

The lower guide member 60 is integrally formed with a latch portion 69 for a stopper engageable with the lower hinge member 70 , so that the closed state of the door 11 can be maintained.

There is a stopper 80 abutting against the lower hinge member 70 to control the opening of the door 11 , and the stopper 80 is installed at the lower portion of the door 11 together with the lower guide member 60 . Therefore, by controlling the opening angle of the door 11, the installation workability of the stopper 80 can be improved.

In addition, in Embodiment 1 and Embodiment 2 above, a side-by-side refrigerator was shown, but the door of the side-by-side refrigerator includes the same upper hinge member, upper guide member, lower hinge member, and lower The guide member, in this case, also has the same effect.

As described above, Embodiment 1 and Embodiment 2 have been described as examples of the technology disclosed in this application. However, the technique of the present invention is not limited thereto, and can be applied to embodiments in which changes, substitutions, additions, omissions, etc. have been made. In addition, it is also possible to form a new embodiment by combining the components described in the above-mentioned first embodiment and second embodiment.

Industrial availability

Since the present invention can open the door even when the device is installed close to the indoor wall, it can be applied to various refrigerators having a door.

Explanation of reference signs

1 cold storage

10 subjects

11 doors

11a Front panel

11b door pocket

11c inner panel

11d front side corner

11e Stair storage

12 hinge structure

13 Upper hinge mounting recess

14 Upper housing wall

15 openings

16 Lower hinge mounting recess

17 lower housing wall

20 Upper hinge part

21 base

22 Pin support part

23 Upper notch

24 1st upper guide pin

25 2nd upper guide pin

30 Upper guide part

31 flat part

32 Upper guide recess

32a Bottom

33 Positioning Department

34 Upper guide slot

35 1st upper guide

36 2nd upper guide

37 3rd upper guide

38 Ribs

40, 70 lower hinge parts

41, 71 base

42, 72 Flange

43, 73 1st lower guide pin

43a, 73a flange part

44a, 74a flange part

44, 74 2nd lower guide pin

45 Lower notch

50, 60 Lower guide parts

51, 61 flat part

52, 62 Lower guide recess

52a Bottom

53 Positioning Department

54, 64 Lower guide groove

55, 65 1st lower guide part

56, 66 2nd lower guide part

57, 67 3rd lower guide part

58, 68 Ribs

63 fixed part

69 Latch Department

75 Lower notch (stopper contact part)

76 Latch locking part

80 stop

90 Spacers

O is the imaginary center of rotation.

Claims (6)

1. A hinge structure of a refrigerator, which is a hinge structure of a refrigerator having a main body and a door, and supporting the door on the main body in an openable and closable manner, the hinge structure of the refrigerator Features include: an upper hinge part and a lower hinge part mounted to the body; a first upper guide pin and a second upper guide pin provided on the upper hinge member, and a first lower guide pin and a second lower guide pin provided on the lower hinge member; an upper guide part installed on the upper part of the door and a lower guide part installed on the lower part of the door; and The upper guide groove provided in the upper guide member and engaged with the first upper guide pin and the second upper guide pin, and the upper guide groove provided in the lower guide member and engaged with the first lower guide pin a lower guide groove engaged with the second lower guide pin, In the door, the upper guide groove is controlled by the first upper guide pin and the second upper guide pin, and the lower guide groove is controlled by the first lower guide pin and the second lower guide pin. way to open and close, Virtual rotation centers of the first upper guide pin and the second upper guide pin, and virtual rotation centers of the first lower guide pin and the second lower guide pin when the door is opened and closed , in a state where the door is closed, located on the front side of the door with respect to the main body. 2. The hinge structure of the refrigerator according to claim 1, characterized in that: The upper guide groove and the lower guide groove are each composed of one guide groove having at least two guide portions formed in an arc shape, The upper guide groove controls the first upper guide pin and the second upper guide pin while moving the virtual rotation center of the first upper guide pin and the second upper guide pin, The lower guide groove controls the first lower guide pin and the second lower guide pin while moving the virtual rotation center of the first lower guide pin and the second lower guide pin. 3. The hinge structure of the refrigerator according to claim 1 or 2, characterized in that: A latch portion for a stopper capable of engaging with the lower hinge member is formed integrally with the lower guide member. 4. The hinge structure of the refrigerator according to any one of claims 1 to 3, characterized in that: also having a stopper abutting against said lower hinge member to control opening of said door, The stopper is attached to the lower portion of the door together with the lower guide member. 5. The hinge structure of the refrigerator according to any one of claims 1 to 4, characterized in that: An upper cover wall covering front sides of the upper hinge member and the lower hinge member, and a lower cover wall covering front sides of the upper guide member and the lower guide member are formed on the door. 6. The hinge structure of the refrigerator according to claim 5, characterized in that: A notch portion is formed on the upper hinge member and the lower hinge member, the notch portion accommodating an end portion of the housing wall when the door is opened.

Images