JPH07234068A - Door device for refrigerator and the like - Google Patents

Abstract

PURPOSE:To reduce operation effort for opening a first door in a set of outwardly opening folding doors consisting of a first door and a second door and having a partition body performing rotative motion according to the opening and closing motion of the first door. CONSTITUTION:A first guide pin 18 acting in such a manner as to make a partition body 16 perform turning motion when a first door is operated to open and a second guide pin 20 acting in such a manner as to make the partition body 16 perform turning motion when the first door is operated to close are located in horizontally different positions with each other. The distance L1 between the axis O of the turning motion of the partition body 16 and the first guide pin 18 is set greater than the distance L2 between the axis O of the turning motion and the second guide pin 20. Outer surface of the first guide pin 18 facing toward a first cam 22 is formed in a shape of an arched face 18a having a large radius of curvature.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention has first and second doors of a double-door type as doors for opening and closing an opening of a storage chamber, and one of the first doors is rotationally displaced in response to the opening and closing. The present invention relates to a door device for a refrigerator or the like having a partition body.

[0002]

2. Description of the Related Art In recent years, for example, in household refrigerators,
There is provided a so-called double door type door device that opens and closes the opening of the refrigerating compartment by two doors. A conventional configuration of a refrigerator door device of this type will be described with reference to FIGS.

As shown in FIG. 7, a refrigerator compartment 2 which is a storage compartment is formed in a main body 1 of a refrigerator, and a first and second opening / closing opening 2a of the refrigerating compartment 2 is formed on the front surface of the refrigerator compartment 2. Doors 3 and 4 are provided. These first and second doors 3, 4
Is a so-called double-door type, in which one outer side portion is pivotally supported to horizontally rotate from the central side. A gasket 5 for maintaining airtightness at the time of closing is provided in a frame shape around the back surface periphery of the first and second doors 3, 4.

Of the first and second doors 3 and 4, the side portion of the left first door 3 on the side of the pivot support receives the portion located at the side portion on the center side of each gasket 5. , First and second
A partition body 6 is rotatably attached in order to open the entire opening 2a when the doors 3 and 4 are opened. The partition body 6 extends in the up-down direction along the back surface of the right side portion of the first door 3 and projects to the right as shown by the solid line in FIG. 7 and the first position as shown by the chain double-dashed line. Between the door 3 and the retracted position that is folded to the rear side of the door 3 can be rotationally displaced about the rotational fulcrum O.

Then, as shown in FIG. 8, in order to displace the partition 6 between the projecting position and the retracted position, the refrigerating chamber 2
Rail members 8 having guide pins 7 are provided at the upper and lower edges of the opening 2a, and guide grooves 9 into which the guide pins 7 are fitted are provided at both upper and lower ends of the partition plate 6. As shown in FIG. 9, the guide groove 9 is open at the right end surface in the figure, and has a curved first wall portion 9a convex upward and a curve concave upward in the figure. It has the 2nd wall part 9b which becomes a shape.

Thus, when the first door 3 is closed, as shown in FIG. 10, the partition body 6 moves in the direction of arrow A, whereby the partition body 6 in the folded position is guided. Groove 9
The guide pin 7 relatively enters into the inside, and the first wall 9
By sliding a, the partition body 6 is pressed by the guide pin 7 and pivotally displaced to the projecting position as shown in FIG.

On the other hand, when the first door 3 is opened,
The guide pin 7 located at the rear end portion in the guide groove 9 of the partition body 6 at the protruding position slides on the second side wall portion 9b in the direction of relatively withdrawing from the guide groove 9. As a result, the partition 6 is pressed by the guide pin 7 and pivotally displaced to the folding position.

The guide grooves 9 at both upper and lower ends of the partition 6 are set to have the same shape, and the guide pins 7 present at both upper and lower edges of the opening 2a have the same shape and the same position. Is set.

[0009]

By the way, in opening the first door 3 from the closed state, as shown in FIG. 6
Hold a hand part (not shown) provided at a position close to, and pull it toward you. However, in the above-described conventional configuration, when the first door 3 is closed, the horizontal separation distance L between the rotation fulcrum O of the partition 6 and the guide pin 7 is extremely short. However, there is a problem that a large operating force F is required when opening the first door 3.

In this case, if the position of the guide pin 7 is moved to the right side (the side of the second door 4) as shown by the chain double-dashed line in FIG. The separation distance L between them can be increased, and the operating force F during the opening operation of the first door 3 can be reduced.
The guide pin 7 cannot be properly inserted into the guide groove 9 during the closing operation of.

The present invention has been made in view of the above circumstances, and an object thereof is to have first and second doors of a double door type, and a partition body which is rotatably displaced on the first door according to opening and closing thereof. It is an object of the present invention to provide a door device such as a refrigerator that can reduce the operation force when the first door is opened.

[0012]

In order to achieve the above-mentioned object, a door device for a refrigerator or the like according to the present invention has a storage chamber provided in the refrigerator or the like, and a door chamber on each of the left and right sides of the opening of the storage chamber. First and second double doors that are pivotally supported at one side and that open and close the opening by horizontal rotation, and an anti-pivot in the first door of the first and second doors. It is attached to the inner surface side of the side portion on the supporting side so as to extend vertically along the side portion, and rotates between a protruding position protruding sideways from the side portion and a retracted position folded rearward. And a first guide pin provided at one of an upper edge portion and a lower edge portion of the opening of the storage chamber at a position corresponding to the partition body, and Of the upper edge portion or the lower edge portion of the opening, the side on which the first guide pin is provided A second guide pin provided on the opposite side at a position corresponding to the partition body, and one of the upper end portion or the lower end portion of the partition body corresponding to the first guide pin, The first guide pin relatively slides as the first door is released from the closed state, so that the first guide pin pushes the partition body to pivotally displace from the projecting position to the retracted position. The first cam portion and the second portion of the upper end portion or the lower end portion of the partition body.
Is provided on the side corresponding to the guide pin, and the second guide pin relatively slides when the first door is closed from the open state, so that the second guide pin presses the second guide pin. A second cam portion for rotationally displacing the partition body from the retracted position to the projecting position, and in the closed state of the first door,
The separation distance between the rotation fulcrum of the partition body and the first guide pin is set to be larger than the separation distance between the rotation fulcrum and the second guide pin, and the first The outer surface of the guide pin on the side facing the first cam portion is configured to be an arcuate surface having a large radius of curvature (claim 1).

In this case, the first and second cam portions are
It is preferable that the first door is formed on the inner surface of a bag-shaped peripheral wall having a front wall and a rear wall when the first door is closed (claim 2).

[0014]

According to the means of claim 1, when the first door is opened from the closed state, the first door provided at one of the upper edge and the lower edge of the opening of the storage chamber. Of the partition body relatively slides on the first cam portion provided on the side corresponding to the first guide pin of the upper end portion or the lower end portion of the partition body, whereby the first cam portion is moved to the first cam portion. The partition body is pressed by the first guide pin and pivotally displaced from the projecting position projecting laterally to the retracted position where it is folded rearward.

On the other hand, when the first door is closed from the open state, the second guide pin provided on the other of the upper edge portion and the lower edge portion of the opening of the accommodation chamber causes the partition body to move. The second cam portion is pressed by the second guide pin by relatively sliding the second cam portion provided on the side corresponding to the second guide pin of the upper end portion or the lower end portion of the second guide pin. As a result, the partition body is pivotally displaced from the retracted position to a protruding position that projects laterally.

In this case, the first guide pin does not act on the rotational displacement of the partition body with respect to the partition body during the closing operation of the first door, and the first guide pin is provided on the first cam portion only during the opening operation of the first door. Therefore, in the closed state of the first door, the first guide pin can be provided at a position farther from the rotation fulcrum of the partition body than the second guide pin.

Therefore, it is possible to set the separation distance between the pivot of the partition body and the first guide pin, which acts during the opening operation of the first door, to be larger than that in the conventional case, and the opening of the first door is possible. It becomes possible to reduce the operating force during operation.

Further, in this case, the outer surface of the first guide pin, which acts during the opening operation of the first door, facing the first cam portion is an arcuate surface having a large radius of curvature. By doing so, it is possible to lengthen the distance and the time during which the first guide pin and the first cam portion contact each other during the opening operation of the first door, so that the partition body is reliably rotated from the protruding position to the retracted position. Will be able to.

According to the second aspect of the present invention, each of the peripheral walls through which the first and second guide pins relatively move in and out has a bag shape having a front wall and a rear wall. When the door is closed, the front wall is less likely to be affected by heat on the accommodation chamber side. For this reason, there is an advantage that it is possible to prevent the front wall from being exposed to dew, for example.

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the present invention is applied to a household refrigerator will be described below with reference to FIGS. First, FIG. 3 shows the main body 11 of the refrigerator.
A refrigerating chamber 12 as a storage chamber is provided in the upper part of the inside of the unit 1. And in front of the refrigerator compartment 12, the refrigerator compartment 12
Forming a rectangular shape for opening and closing the front opening 12a of the
And second doors 13 and 14 are provided. The first and second doors 13 and 14 are of a so-called double-door type that opens and closes left and right from the center side by pivotally supporting one outer side portion of each.

A magnetic gasket 15 is provided in the shape of a frame around the back surface of each of the first and second doors 13 and 14 for maintaining airtightness when closed. The upper and lower side portions and the outer side portions of the magnet gasket 15 are directed to the peripheral portion of the front surface of the refrigerating chamber 12, and the doors 13, 1 of the magnet gasket 15 are covered.
4 which receives the portion located on the side of the center side of the door 4 and both doors 1
Opening 12a of the refrigerating compartment 12 when the openings 3 and 14 are opened
A partition 16 is provided on the left first door 13 in order to open the whole.

As shown in FIGS. 4 to 6, the partition body 16 has a vertically elongated columnar shape having a rectangular cross section, and is provided on the back surface of the right side portion of the first door 13 along the side portion. Has been. In this case, the partition body 16 is attached to the support member 17 provided on the first door 13 so as to be horizontally rotatable about the rotation fulcrum O. With this, the partition 16
Is a protruding position that is located between the two doors 13 and 14 and protrudes to the right of the first door 13 as shown by the solid line in FIG. 4, and the first door 13 as shown by the chain double-dashed line in FIG. It is possible to pivotally displace between the retracted position and the side portion of the retracted position.

When the first door 13 is closed, the partition 16 is in a projecting position and receives the magnet gasket 15. When the first door 13 is open, the partition 16 does not get in the way. It is set to the retracted position. Hereinafter, a structure for rotationally displacing the partition body 16 between the protruding position and the retracted position will be described in detail.

A first guide pin 1 protruding downward is provided at a predetermined portion of the upper edge portion of the opening 12a of the refrigerating compartment 12.
A rectangular plate-shaped upper rail member 19 having 8 is provided,
Further, a rectangular plate-shaped lower rail member 21 having a second guide pin 20 protruding upward is provided at a predetermined portion of the lower edge portion of the opening 12a.

In this case, the second guide pin 20 on the lower side
As shown in FIG. 1 (b), is configured in a columnar shape having a circular cross-sectional shape, while the upper first guide pin 18 is, as shown in FIG. 1 (a), Of the outer surfaces, the outer surface on the left oblique rear side has an arcuate surface 18a having a large radius of curvature,
The cross-sectional shape is a columnar shape having a larger flat shape than the second guide pin 20. Also, the first guide pin 18
Is located on the right side in the horizontal direction with respect to the second guide pin 20 (see FIG. 6).

An upper partition cover 23 having a first cam portion 22 on which the first guide pin 18 relatively slides is provided at the upper end of the partition body 16. As shown in FIG. 1A, the first cam portion 22 has a bag-shaped peripheral wall having a front wall 24a and a rear wall 24b when the first door 13 is closed (the partition plate 16 is in the protruding position). 24
Of these, it is formed on the inner surface of the rear wall 24b. The right side of the peripheral wall 24 is open so that the first guide pin 18 can relatively move in and out.

At the lower end of the partition body 16, the second
A lower partition cover 26 having a second cam portion 25 on which the guide pin 20 of FIG. As shown in FIG. 1 (b), the second cam portion 25 has the front wall 2 when the first door 13 is closed (the partition plate 16 is in the protruding position).
It is formed on the inner surface of the front wall 27a of the bag-shaped peripheral wall 27 having the 7a and the rear wall 27b. Surrounding wall 27
The right side of is also open so that the second guide pin 20 can relatively move in and out.

The first cam portion 22 has a curved surface which is convex forward (downward in FIG. 1 (a)), and when the first door 13 is closed, the first guide pin 18 has an arc shape. The surface 18a faces. Then, when the first door 13 is opened, as described later, the first guide pin 18 causes the first cam portion 22 to move.
The partition 16 is pivotally displaced from the projecting position to the retracted position by sliding relative to the.

The second cam portion 25 is rearward (see FIG. 1).
In (b), the curved surface is formed so as to be convex upward.
Then, when the first door 13 is closed, as will be described later, the second guide pin 20 slides relative to the second cam portion 25, so that the partition body 16 is projected from the retracted position. It is designed to be rotationally displaced to the position.

Next, the operation of the above configuration will be described. First, in a state where both the first and second doors 13 and 14 are closed,
As shown by the solid line in FIG. 4, the partition body 16 is held at the protruding position. In this state, the first guide pin 1 on the upper side
8 is relatively intruded into the upper peripheral wall 24 (see FIG. 1A), and the lower second guide pin 20 is relatively in the lower peripheral wall 28. Is in a state of entering (see FIG. 1B). In this state, when only the second door 14 on the right side is opened / closed,
The partition 16 remains held in the protruding position.

When the first door 13 is opened while the first and second doors 13 and 14 are both closed, or when only the first door 13 is closed, the partition body 16 is opened. It receives the operating force F toward the front side (see FIG. 2 (a1)). Along with this, as shown in FIGS. 2 (a2) and (a3), the first guide pin 18 on the upper side relatively slides on the first cam portion 22, so that the first cam portion 22 is moved. 22 is pressed by the first guide pin 18, and the partition body 16 is pivotally displaced rearward (counterclockwise direction) about the pivot fulcrum O so as to be folded and displaced to the retracted position. become.

At this time, the relative position between the lower second guide pin 20 and the second cam portion 25 changes, but the partition 1
A force for rotationally displacing 6 is not generated. Therefore, when the opening operation of the first door 13 is performed, the first door on the upper side is
The partition body 16 is rotated from the projecting position to the retracted position only by the action of the guide pin 18 and the first cam portion 22.

In this case, the arcuate surface 18a of the first guide pin 18 facing the first cam portion 22 is an arcuate surface having a large radius of curvature. The distance and time when the pin 18 and the first cam portion 22 are in contact can be lengthened. Therefore, the partition 16
Can be reliably rotated from the protruding position to the retracted position.

By the way, if the first guide pin is a simple circular shape and the distance and the time during which the first guide pin and the first cam portion contact each other during the opening operation are short, the partition body rotates from the projecting position to the retracted position. Without doing so, there is a risk of returning to the protruding position on the way, but in the present embodiment, such a problem can be reliably prevented.

When the partition body 16 is rotated from the projecting position to the retracted position, the first guide pin 18 relatively comes out from the peripheral wall 24 of the upper partition cover 23, and the second guide pin 20 moves to the lower partition wall. It will come out relatively from the peripheral wall 27 of the cover 26.

On the other hand, when the first door 13 is closed from the open state, the second guide pin 20 first relatively moves into the peripheral wall 27 of the lower partition cover 26. Then, the second guide pin 20 is connected to the second cam portion 2
By sliding 5 relatively, the second cam portion 25
Is pressed by the second guide pin 20, and the partition body 16 is rotated rightward (clockwise direction) from the retracted position to be rotationally displaced to the protruding position.

At this time, the relative position between the upper first guide pin 18 and the first cam portion 22 changes, but the partition 1
A force for rotationally displacing 6 is not generated. Therefore, during the closing operation of the first door 13, the second door on the lower side is
The partition body 16 is rotated from the retracted position to the projecting position only by the action of the guide pin 20 and the second cam portion 24.

According to this embodiment, the first guide pin 18 on the upper side does not affect the rotational displacement of the partition body 16 when the first door 13 is closed, and thus the first guide pin 18 does not move. Door 1
Since it acts on the first cam portion 22 only when the opening operation of the third door 3 is performed, as shown in FIG. 1, when the first door 13 is closed, the rotation fulcrum O of the partition body 16 and the first guide. The distance L1 in the horizontal direction between the pin 18 and the distance L1 in the horizontal direction between the rotation fulcrum O and the second guide pin 20.
It can be set to be larger than 2.

Therefore, the rotation fulcrum O of the partition body 16 and the first guide pin 18 that acts when the first door 13 is opened.
Since the separation distance L2 between and can be set to be larger than in the conventional case, the operation force F at the time of the opening operation of the first door 13 can be reduced. Along with this, the force applied to the first door 13 is also reduced, so that the first door 13 can be prevented from being twisted or the like as much as possible.

Further, in this case, the outer surface of the first guide pin 18 which acts during the opening operation of the first door 13 and which faces the first cam portion 22 has an arcuate surface 18a having a large radius of curvature.
With such a configuration, when the first door 13 is closed, the first guide pin 18 moves the first cam portion 22.
The part that comes into contact with can be set further away from the rotation fulcrum O of the partition body 16, and the operating force during the opening operation of the first door 13 can be further reduced. Moreover, when the first door 13 is opened, the first guide pin 18 and the first guide pin 18
Since the distance and the time of contact with the cam portion 22 can be increased, there is also an advantage that the partition body 16 can be reliably rotated from the protruding position to the retracted position.

Further, in the above embodiment, the first
Since the peripheral walls 24 and 27 into and from which the second guide pins 18 and 21 move in and out are formed in a bag shape having front walls 24a and 27a and rear walls 24b and 27b,
When the door 13 is closed, the front walls 24a and 27a are less likely to be affected by heat on the refrigerating compartment 12 side. Therefore, there is an advantage that it is possible to prevent the dew on the front walls 24a and 27a as much as possible.

The present invention is not limited to the above embodiment, but can be modified or expanded as follows.

In the above embodiment, the first guide pin 18 and the first cam portion 22 are provided on the upper side, and the second guide pin 20 is provided.
And the second cam portion 25 is provided on the lower side,
On the contrary, the second guide pin 20 and the second cam portion 25 may be provided on the upper side, and the first guide pin 20 and the first cam portion 22 may be provided on the lower side. Further, the right door may be the first door, and the partition body 16 may be provided on the first door. The present invention can be applied not only to a refrigerator but also to various devices having a double door.

[0044]

According to the door device for a refrigerator or the like according to the first aspect of the present invention, it has first and second doors of a double door type, and the first door is provided with a partition body which is rotationally displaced according to opening and closing thereof. A first guide pin that acts on the rotation of the partition when the first door is opened, and a second guide pin that acts on the rotation of the partition when the first door is closed. The horizontal position of the partition is different, and in the closed state of the first door, the separation distance between the rotation fulcrum of the partition body and the first guide pin is set to be the distance between the rotation fulcrum and the second guide pin. By setting the distance to be larger than the distance in the horizontal direction, it is possible to reduce the operation force when the first door is opened.

In addition, the outer surface of the first guide pin, which acts during the opening operation of the first door, on the side facing the first cam portion,
By forming an arcuate surface having a large radius of curvature, it is possible to increase the distance and the time during which the first guide pin and the first cam portion contact each other during the opening operation of the first door. There is also an advantage that the body can be reliably rotated from the protruding position to the retracted position.

According to another aspect of the present invention, the door device for a refrigerator or the like has a bag-like peripheral wall in which the first and second guide pins relatively move in and out, having a front wall and a rear wall. Therefore, in the closed state of the first door, the front wall is less likely to be affected by heat on the accommodation chamber side. For this reason, especially in a refrigerator, there is an advantage that it is possible to prevent the dew on the front wall as much as possible.

[Brief description of drawings]

FIG. 1 shows an embodiment of the present invention, in which FIG.
Top plan view of the first guide pin and the first cam part in the closed state of the door of FIG. 6, (b) is a top plan view of the second guide pin and the second cam part in the same state

FIG. 2 is a diagram for explaining the operation

FIG. 3 is a perspective view of the refrigerator with the first and second doors opened.

FIG. 4 is a cross-sectional plan view with the first and second doors closed.

FIG. 5 is a perspective view of a partition body portion.

FIG. 6 is a cross-sectional plan view of the main part

FIG. 7 is a view corresponding to FIG. 4 showing a conventional configuration.

FIG. 8 is a perspective view showing a partition body and a rail member.

FIG. 9 is a view corresponding to FIG.

FIG. 10 is an operation explanatory view.

[Explanation of symbols]

In the drawings, 12 is a refrigerating room (accommodation room), 13 is a first door, 1
4 is a second door, 16 is a partition, 18 is a first guide pin,
18a is an arcuate surface, 20 is a second guide pin, 22 is a first cam portion, 24 is a peripheral wall, 24a is a front wall, 24b is a rear wall, 25 is a second cam portion, 27 is a peripheral wall, and 27a. Is a front wall, 27b is a rear wall, and O is a rotation fulcrum of the partition.

Claims (2)

[Claims] 1. A storage chamber provided in a refrigerator or the like, and a double-sided open type in which one side portion is pivotally supported on the left and right sides of the opening portion of the storage chamber, and the opening portion is opened and closed by horizontal rotation. The first and second doors are attached to the inner surface side of the side portion of the first door of the first and second doors on the opposite pivot side so as to extend in the vertical direction along the side portions. A partition body that is rotatable between a projecting position that projects laterally from the side part and a retracted position that is folded rearward; and an upper edge part or a lower edge part of the opening in the storage chamber. A first guide pin provided on one side of the partition body at a position corresponding to the partition body; and a side of the upper edge portion or the lower edge portion of the opening of the storage chamber on which the first guide pin is provided. And a second guide pin provided on the side opposite to the partition body at a position corresponding to the partition body. Of the upper end portion or the lower end portion of the partition body, the first guide pin is provided on the side corresponding to the first guide pin, and the first guide pin is relatively moved with the opening of the first door from the closed state. A first cam portion that is slidably pressed by the first guide pin to pivotally displace the partition body from the projecting position to the retracted position; The second guide pin is provided on the side corresponding to the second guide pin, and the second guide pin relatively slides when the first door is closed from the open state, and is pressed by the second guide pin. A second cam portion for rotatively displacing the partition body from the retracted position to the protruding position, and between the rotation fulcrum of the partition body and the first guide pin in the closed state of the first door. The separation distance is defined as the distance between the rotation fulcrum and the second guide pin. The outer surface of the first guide pin on the side facing the first cam portion is configured to be an arcuate surface having a large radius of curvature while being set so as to be larger than the distance. Door device for refrigerators, etc. 2. The first and second cam portions are formed on an inner surface of a bag-shaped peripheral wall having a front wall and a rear wall when the first door is closed. The door device of the refrigerator etc. described in 1.