JP6737437B2 - refrigerator - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a refrigerator that cools and stores foods and the like in a storage chamber, and more particularly to a refrigerator that has a recessed handle portion provided on a heat insulating door that opens and closes the storage chamber.

The following structure is known as a conventional refrigerator in which a handle is provided on the front surface of a door. In FIG. 6, an external perspective view of the refrigerator 100 is shown. On the front surface of the main body 101 of the refrigerator 100, a refrigerating compartment door 102 that opens and closes the refrigerating compartment above the main body 101 and a freezing compartment below the main body 101 can be opened and closed. A freezing room door 103 for closing is provided. The refrigerating compartment door 102 and the freezing compartment door 103 are provided with handle portions 104 and 105 for opening and closing the doors 102 and 103 in the vertical direction of the main body 101.

The handle portions 104 and 105 are, for example, hollow pipe-shaped handles made of aluminum. The handle portions 104 and 105 are formed into a columnar shape so that the user can easily grip the handle portion. The handle parts 104 and 105 are attached to the refrigerating compartment door 102 and the freezing compartment door 103 via mounting members such as screws (for example, refer to Patent Document 1).

Patent No. 5868245

The above-mentioned refrigerating compartment door 102 is mainly composed of a steel plate panel plate serving as a design surface, a synthetic resin inner plate assembled to the steel plate panel plate from the inside of the refrigerator, and between the steel plate panel plate and the synthetic resin inner plate. And an adiabatic foaming agent filled in the inner space of the. Then, in the structure of the handle portion 104, for example, from the viewpoint of design, the present handle structure may be changed to a recessed handle structure.

In this case, in order to simply dispose the recessed handle portion in a desired region of the refrigerating compartment door 102, the disposition of the recessed handle portion narrows the internal space between the steel plate panel plate and the synthetic resin inner plate. Therefore, it becomes impossible to secure a sufficient thickness of the heat insulating foaming agent. As a result, there is a problem that dew condensation occurs in an area where the thickness of the heat insulating foaming agent is not sufficient in the recessed handle portion.

Further, as a method of solving the above-mentioned problem of dew condensation, it is conceivable to manufacture a new molding die so that a sufficient thickness of the heat insulating foaming agent can be secured even in the arrangement region of the recessed handle portion. However, when a new molding die is manufactured, the conventional molding die cannot be used, and there is a problem that the investment cost of the molding die increases significantly. Further, it is necessary to re-design the product, which causes not only cost increase but also delay in delivery.

Furthermore, in order to secure a sufficient thickness of the heat insulating foaming agent in the region where the recessed handle portion is arranged, it is conceivable to project the synthetic resin inner plate into the inside of the refrigerator. However, since a plurality of door pockets are provided inside the refrigerator compartment door 102, there is a problem that the storage space is reduced and the convenience for the user is impaired.

The present invention has been made in view of the above circumstances, and an object thereof is to provide a recessed handle portion in a heat insulating door that opens and closes a storage chamber so as to prevent dew condensation and to have a sufficient storage space inside the refrigerator. To provide a refrigerator that is secured in.

In the refrigerator of the present invention, a heat insulating box having an opening formed therein, and a heat insulating door attached to the heat insulating box so as to openably and closably close the opening, the heat insulating door being an outer surface forming a design surface A plate member, an inner plate member that is assembled to the outer plate member from the inside, a heat insulating material that is filled in a space between the outer plate member and the inner plate member, and is disposed between the outer plate member and the inner plate member. A recessed handle portion is provided, and the inner surface plate member has at least a first flat surface arranged in parallel with the outer surface plate member and a second flat surface inclined in a direction away from the outer surface plate member. The second flat surface is disposed along the longitudinal direction of the recessed handle portion, the recessed handle portion is disposed on the upper side surface side of the heat insulating door, and the heat insulating door closes the opening. The second flat surface is a surface inclined obliquely upward toward the opening portion side, and the angle formed by the second flat surface and the first flat surface is larger than 135 degrees, and the opening An egg storage portion is disposed on the inner surface plate member of the heat insulating door on the side of the portion, and the egg storage portion is disposed below the second flat surface .

In the refrigerator of the present invention, the heat-insulating door that closes the opening of the storage chamber of the heat-insulating box is provided with the recessed handle portion. A second flat surface is arranged so as to be inclined toward the inside of the refrigerator on the inner surface plate material of the heat insulating door in the region where the recessed handle portion is formed. With this structure, the thickness of the heat insulating material of the heat insulating door is sufficiently secured in the region where the recessed handle portion is formed, and the occurrence of dew condensation on the recessed handle portion is prevented. Further, since the molding die for molding the inner surface plate material can also be used by improving the conventional molding die, the cost increase is greatly reduced as compared with the case where a new molding die is manufactured.

In addition, in the refrigerator of the present invention, the second flat surface provided on the inner surface plate member and the first flat surface forming the majority of the inner surface plate member are arranged so that the angle formed by the second flat surface is larger than 135°. A flat surface is formed. With this structure, in the region where the recessed handle portion is formed, the thickness of the heat insulating material of the heat insulating door is sufficiently secured, and the storage space of the door pocket inside the heat insulating door is sufficiently secured.

Further, in the refrigerator of the present invention, the recessed handle portion is disposed along the upper side surface of the heat insulating door, and the egg storage portion is disposed in the door pocket of the heat insulating door in the region where the recessed handle portion is formed. Since the second flat surface is arranged in a state of being raised as much as possible, a sufficient storage space for the door pocket of the heat insulating door is secured. With this structure, the user can easily put the eggs in and out of the egg storage portion, and the convenience of the user is improved.

It is a figure which shows the refrigerator which concerns on embodiment of this invention, (A) perspective view, (B) side sectional drawing. It is an exploded perspective view showing a door of a refrigerator concerning an embodiment of the present invention. It is sectional drawing which shows the door of the refrigerator which concerns on embodiment of this invention. It is a perspective view which shows the door of the refrigerator which concerns on embodiment of this invention. It is sectional drawing which shows the door of the refrigerator which concerns on embodiment of this invention. It is a perspective view explaining the conventional refrigerator.

Hereinafter, a refrigerator 1 according to an embodiment of the present invention will be described in detail with reference to the drawings. In the following description, the up-down direction indicates the height direction of the refrigerator 1, the left-right direction indicates the width direction of the refrigerator 1, and the front-back direction indicates the depth direction of the refrigerator 1.

FIG. 1(A) is a perspective view showing a schematic structure of a refrigerator 1 according to an embodiment of the present invention, and FIG. 1(B) is a side sectional view showing a schematic structure of the refrigerator 1 according to an embodiment of the present invention. Is.

As shown in FIG. 1A, the refrigerator 1 includes a heat insulating box 2 as a main body, and a storage chamber for storing food and the like is formed inside the heat insulating box 2. Further, as the storage chamber, specifically, a freezing chamber 11 (see FIG. 1B) and a refrigerating chamber 12 (see FIG. 1B) are formed from the upper stage.

The front surface of each storage chamber of the heat-insulating box 2 is open, and heat-insulating doors 3 and 4 are openably and closably provided in the openings. The heat insulating door 3 is, for example, a door whose upper and lower end portions on the right end when viewed from the front are rotatably supported by the heat insulating box 2 and which opens and closes the opening of the freezer compartment 11 from the front. Similarly, the heat insulating door 4 is, for example, a door whose upper and lower end portions on the right end when viewed from the front are rotatably supported by the heat insulating box body 2 and which opens and closes the opening of the refrigerating chamber 12 from the front. Although the details will be described later, the heat insulating door 4 is provided with a recessed handle portion 5 along the upper side surface of the heat insulating door 4, and the user holds his hand on the recessed portion 41 (see FIG. 3) of the recessed handle portion 5. The thermal insulation door 4 can be opened and closed by hanging.

As shown in FIG. 1(B), a heat insulating box 2 which is the main body of the refrigerator 1 is provided with an outer box 13 made of a steel plate having an opening on the front side, and a space is provided inside the outer box 13, And an inner box 14 made of synthetic resin having an opening. A heat insulating material 15 made of polyurethane foam is filled and foamed in the gap between the outer box 13 and the inner box 14. Both the heat insulating doors 3 and 4 for closing the freezing compartment 11 and the refrigerating compartment 12 also have the same heat insulating structure as the heat insulating box 2. Further, in FIG. 1B, the direction in which air flows is indicated by an arrow.

A space between the freezing compartment 11 and the refrigerating compartment 12 located below the freezing compartment 11 is partitioned by a heat insulating partition wall 16. The heat insulating partition wall 16 also has a heat insulating structure similarly to the heat insulating box body 2 described above. Then, inside the heat insulating partition wall 16, a return air passage 17 that connects the refrigerating chamber 12 and the cooling chamber 19 is formed. The suction port connecting the refrigerating compartment 12 to the return air duct 17 is formed on the front side of the top surface of the refrigerating compartment 12.

Inside the inner box 14 and behind the freezing chamber 11, a cooling chamber 19 is formed by being partitioned by a partition member 18 made of a synthetic resin plate or the like. Inside the cooling chamber 19, a cooler 20 which is an evaporator for cooling the air circulating in the refrigerator 1 is arranged. The cooler 20 is connected to a compressor 21, a radiator (not shown) and a capillary tube (not shown) or an expansion valve (not shown) via a refrigerant pipe (not shown). , A vapor compression refrigeration cycle circuit.

The refrigerator 1 includes a control device (not shown), and the control device executes a predetermined arithmetic process based on an input value from a sensor (not shown) such as a temperature sensor, and compresses it. Each component device such as the fan 21 and the blower 22 is controlled.

FIG. 2 shows the heat insulating door 4 of the refrigerator 1 according to the embodiment of the present invention in a disassembled state in order to explain each member constituting the heat insulating door 4.

As shown in FIG. 2, the heat insulating door 4 mainly includes an outer surface plate member 31 that forms a design surface, an inner surface plate member 32 that is assembled to the outer surface plate member 31 from the rear, and a frame shape on the inner surface of the inner surface plate member 32. It has a gasket 33 to be attached, and cap portions 34 and 35 for closing the upper end and the lower end of the internal space surrounded by the outer surface plate material 31 and the inner surface plate material 32. In this embodiment, the recessed handle portion 5 is formed integrally with the cap portion 34.

The outer surface plate member 31 is, for example, a plate member made of a steel plate, and is formed to form the front surface 31A of the heat insulating door 4 and both side surfaces 31B in the width direction thereof. The front surface 31A of the outer surface plate member 31 is formed as a flat surface, and a notch portion 36 for mounting the recessed handle portion 5 is provided near the upper side thereof. Both side surfaces 31B of the outer surface plate member 31 are continuous with the front surface 31A and are formed by being bent in a direction substantially perpendicular to the front surface 31A.

The inner surface plate member 32 is, for example, a plate member made of a synthetic resin, and is formed by vacuum molding using a molding die. As will be described later in detail, the inner surface plate member 32 is mainly continuous with the first flat surface 32A disposed substantially parallel to the front surface 31A of the outer surface plate member 31 and the first flat surface 32A and inclined toward the inside of the refrigerator. And a second flat surface 32B. Then, the inner surface plate member 32 is assembled to the outer surface plate member 31, so that the second flat surface 32B moves toward the refrigerating chamber 12 (see FIG. 1B) of the heat insulating box body 2 (see FIG. 1B). Incline.

As will be described later in detail with reference to FIG. 4, a plurality of protrusions 37 serving as partitions of door pockets provided in the heat insulating door 4 are formed inside the inner surface plate member 32. However, in FIG. 2, most of the plurality of concave and convex shapes provided on the inner surface plate member 32 are omitted for convenience of description.

As illustrated, the upper end and the lower end of the internal space surrounded by the outer surface plate member 31 and the inner surface plate member 32 are closed by, for example, synthetic resin cap portions 34 and 35. The recessed handle portion 5 is integrally formed with the cap portion 34 that closes the upper end side, and the recessed handle portion 5 is arranged in the internal space between the outer surface plate material 31 and the inner surface plate material 32. An internal space between the outer surface plate material 31 and the inner surface plate material 32 is filled and foamed with, for example, a heat insulating material 38 (see FIG. 3) made of polyurethane foam.

As described above, the recessed handle portion 5 is integrally formed with the cap portion 34. The recessed handle portion 5 is a portion on which a user puts his/her finger when opening/closing the heat insulating door 4, and is formed to be recessed in the vertical direction of the refrigerator 1. The recessed handle portion 5 is not limited to being integrally formed with the cap portion 34, but may be separately formed and assembled. Alternatively, a leather cover (not shown) made of various colors may be attached to the surface of the recessed handle 5 to enhance the design.

FIG. 3 shows a cross-sectional view of the heat insulating door 4 shown in FIG. 2 taken along the line AA, but shows the state in which the heat insulating door 4 shown in FIG. 2 is assembled for convenience of explanation.

FIG. 3 shows a cross section of a region where the recessed handle portion 5 of the heat insulating door 4 is formed. As described above, the recessed handle portion 5 is provided along the upper side of the heat insulating door 4. The recessed handle portion 5 is formed with a recessed portion 41 that is recessed downward. The concave portion 41 has a depth that allows a user who is trying to open the heat insulating door 4 to insert his/her fingertip sufficiently. Then, while the concave portion 41 is formed with a sufficient depth, the thickness of the heat insulating door 4 needs to be ensured in the region indicated by the arrow 42. This is because, in the region indicated by the arrow 42, the thickness of the heat insulating door 4 becomes thin, so that the thickness of the heat insulating material 38 becomes insufficient and dew condensation occurs on the recessed handle portion 5.

Therefore, in the present embodiment, the second flat surface 32B is formed on the inner surface plate member 32 along the arrangement area of the recessed handle portion 5 in the area indicated by the circle 43. As described above, the second flat surface 32B is arranged so as to be inclined toward the refrigerating chamber 12 (see FIG. 1B) side of the heat insulating box 2 (see FIG. 1B). The recessed handle portion 5 is formed over most of the heat insulating door 4 in the width direction, but the second flat surface 32B is formed corresponding to the area where the recessed handle portion 5 is arranged. With this structure, the thickness of the heat insulating material 38 is sufficiently secured in the region where the recessed handle portion 5 is arranged, and dew condensation is prevented from occurring in the recessed handle portion 5.

Here, in the region indicated by the circle mark 43, the line indicated by the dotted line 44 indicates the shape of the inner surface plate material in the structure of the conventional handle type handle portion 104 shown in FIG. In the conventional structure, the recessed handle portion 5 of the present embodiment is not arranged on the upper side surface of the refrigerating compartment door 102, and the steel plate panel plate of the refrigerating compartment door 102 is arranged to the upper side. Therefore, the thickness of the refrigerator compartment door 102 corresponding to the area shown by the arrow 42 in the present embodiment is sufficiently secured, and the problem of dew condensation did not occur at all. As a result, as shown by the dotted line 44, the second flat surface 32B of the present embodiment is not arranged on the synthetic resin inner plate of the refrigerating compartment door 102, and the synthetic resin inner plate is also arranged up. The end portion is shaped as a curved surface.

That is, in the present embodiment, the second flat surface 32B of the inner surface plate member 32 is arranged so as to be inclined toward the inside of the refrigerator, so that the necessary thickness of the heat insulating material 38 in the heat insulating door 4 is secured. Although details will be described later with reference to FIG. 5, the second flat surface 32B is formed such that the angle α formed by the first flat surface 32A and the second flat surface 32B is 135° or more. .. With this structure, it is possible to prevent the convenience of the user from being hindered by minimizing the influence on the storage space inside the refrigerator, particularly on the storage space of the door pocket of the heat insulating door 4. Further, it is not necessary to change the arrangement of the storage space of the door pocket, and the molding die described below can be easily modified.

Furthermore, regarding the molding die for forming the inner surface plate member 32, the second flat surface 32B of the present embodiment can be molded by improving the conventional molding die. As described above, in the area indicated by the circle mark 43, the line indicated by the dotted line 44 is the molded shape of the synthetic resin inner plate of the conventional refrigerating compartment door 102 shown in FIG. Therefore, in the molding die, the second flat surface 32B can be used as a molding die that can be molded by cutting the convex portion shown by the dotted line 44. In other words, it can be used as a molding die for the present embodiment in response to cutting a part of the conventional molding die, the molding die can be easily modified, and a case where a new molding die is manufactured. The cost increase can be significantly reduced in comparison.

In addition, there is no need to manufacture a new molding die, there is no need to start over from the beginning of product design, the cost increase due to the rework is prevented, and the loss of order opportunities and the cancellation of orders due to delay in delivery are also prevented. To be done.

FIG. 4 is a perspective view illustrating the structure of the heat insulating door 4 of the refrigerator 1 according to the embodiment of the present invention as viewed from the inside of the refrigerator. FIG. 5 is a cross-sectional view of the heat insulating door 4 shown in FIG. 4 taken along the line BB.

As shown in FIG. 4, the gasket 33 is attached to the inner surface of the heat insulating door 4 in a substantially rectangular frame shape at the outermost periphery thereof. The gasket 33 seals between the heat insulating door 4 and the front surface of the peripheral portion of the refrigerating chamber 12 (see FIG. 1B) of the heat insulating box 2 (see FIG. 1B). With this structure, it is possible to suppress heat from entering the refrigerator 1 from the outside and to prevent the cold air in the refrigerator from escaping to the outside.

Further, for example, a storage case 51 for storing eggs, storage cases 52, 53 for storing seasonings, storage cases 54, 55 for storing PET bottles, etc. are provided on the inner surface of the heat insulating door 4. Has been done. As shown in the figure, a plurality of projecting portions 37 and 56, which project a part of the inner surface plate material 32 of the heat insulating door 4 toward the inside of the refrigerator, are formed and are used as receiving portions for the storage cases 51 to 55.

As shown in FIG. 5, the second flat surface 32B of the inner surface plate member 32 is disposed above the egg storage case 51. In the egg storage case 51, for example, storage holes 61 and 62 for standing and storing eggs in the depth direction of the refrigerator 1 are arranged. Then, in the storage hole 61 on the inside of the refrigerator, the user can easily carry out the work of putting in and out the eggs without hitting the projecting portion 37 arranged above. On the other hand, in the storage hole 62 on the side of the heat-insulating door 4, the user needs to perform the work of putting in and out the egg without hitting the second flat surface 32B and the protruding portion 37 arranged above.

As described above, the second flat surface 32B is arranged to incline toward the inside of the refrigerator in order to secure the thickness of the heat insulating door 4. For example, even when a large egg such as an LL size is stored, the bent portion below the second flat surface 32B is designed so that the egg and the second flat surface 32B do not hit each other. Then, the second flat surface 32B is formed such that the angle α formed by the first flat surface 32A and the second flat surface 32B is larger than 135°.

In other words, the angle α becomes larger than 135° when processing the C-face, so that the user can easily take in and out the eggs. The heat insulating door 4 and the angle α are in a trade-off relationship, but the second flat surface 32B is formed so that the angle α is large within a range in which the above-mentioned problem of dew condensation can be solved. As a result, the user can handle the eggs when putting them in and out of the storage hole 62 of the storage case 51 without laying them too much down, so that the convenience of the user is secured. Further, the egg can be used without moving the position of the storage case 51 downward, the above-mentioned molding die can be easily modified, and the investment cost of the molding die can be prevented from significantly increasing.

In this embodiment, the case where the recessed handle portion 5 is arranged on the upper side of the heat insulating door 4 has been described, but the present invention is not limited to this case. For example, even when the recessed handle portion 5 is disposed on the left and right side surfaces in the width direction of the heat insulating door 4 or the lower side surface of the heat insulating door 4, the second flat surface 32B described above is provided on the inner surface plate member 32. Similar effects are obtained.

Moreover, although the case where the recessed handle portion 5 is provided in the heat insulating door 4 that closes the opening of the refrigerating chamber 12 of the refrigerator 1 has been described, the invention is not limited to this case. For example, the same effect can be obtained even when the heat insulating door 3 that closes the opening of the freezer compartment 11 of the refrigerator 1 is provided with the recessed handle portion having the same structure as the recessed handle portion 5 described above. In addition, various modifications can be made without departing from the scope of the present invention.

1 Refrigerator 2 Heat-insulating box 3 Heat-insulating door 4 Heat-insulating door 5 Recessed handle portion 11 Freezer compartment 12 Refrigerating compartment 31 Outer surface plate material 31A Front surface 32 Inner surface plate material 32A First flat surface 32B Second flat surface 33 Gasket 34 Cap portion 35 Cap portion 36 Notch 37 Protrusion 38 Thermal Insulation 41 Concave 51 Storage Case 61 Storage Hole 62 Storage Hole

Claims (1)

An insulating box body having an opening formed therein; and a heat insulating door attached to the insulating box body to openably close the opening,
The heat insulating door, an outer surface plate material that forms a design surface, an inner surface plate material that is assembled to the outer surface plate material from the inside, a heat insulating material filled in the space between the outer surface plate material and the inner surface plate material, and the outer surface plate material. A recessed handle portion disposed between the inner surface plate member, and,
The inner surface plate member is formed with at least a first flat surface arranged in parallel with the outer surface plate member and a second flat surface inclined in a direction away from the outer surface plate member. Is arranged along the longitudinal direction of the recessed handle portion ,
The recessed handle portion is disposed on the upper side surface side of the heat insulating door,
In a state where the heat insulating door closes the opening, the second flat surface is a surface inclined obliquely upward toward the opening, and the second flat surface and the first flat surface are The angle you make is greater than 135 degrees,
A refrigerator characterized in that an egg storage portion is disposed on the inner surface plate material of the heat insulation door on the opening side, and the egg storage portion is disposed below the second flat surface .

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