JP2002340474A - Door of refrigerator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a door of a refrigerator having an enhanced strength. SOLUTION: The door of the refrigerator comprises a metal plate, synthetic- resin-made side face plates disposed on the left and right sides of the metal plate, a synthetic-resin-made bottom face plate disposed on the bottom of the metal plate, and a urethane foam filled and foamed in a space formed by assembling these plates. The metal plate constitutes the upper end face, the front face and part of the bottom end face of the door. Further, the plate is provided with grooves formed in the side face plates to be engaged with the left and right end parts of the metal plate, groves formed in the bottom face plate to be engaged with the end part of the bottom end face of the metal plate, a curved part provided at the upper end of the metal plate, and an upper reinforcing fitting provided in the inside of the curved part to be connected with the side face plate on the hinge side through a hinge pin and simultaneously connected with the side plate on the opposite-to-hinge side.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a refrigerator, and more particularly to a refrigerator door.

[0002]

2. Description of the Related Art A conventional refrigerator door will be described with reference to FIGS. 10 is an external perspective view of a conventional refrigerator, FIG. 11 is a perspective view of main parts of a conventional refrigerator door, and FIG. 12 is a main part perspective view of components of the conventional refrigerator door.

FIG. 13 is a sectional view of an end piece on a door of a conventional refrigerator, FIG. 14 is a transverse sectional view of the conventional refrigerator door after foaming, and FIG. 15 is a longitudinal sectional view of the conventional refrigerator door after foaming.

In FIG. 1, reference numeral 101 denotes an outer plate of a door.
b and the right end face 101c are formed of a single metal plate such as an iron plate or a stainless steel plate. Reference numeral 102 denotes a door upper end piece that constitutes a door upper end surface, has a groove 102a on the outer periphery, and a cut portion at the upper end of the door outer plate 101 is inserted. On the inner side, as will be described later, an upper reinforcing metal fitting 1 for preventing the door from bending.
There is a groove 102b that fits (engages) and accommodates 04, and hooks 102d are provided at several points at the end so that the upper reinforcing metal fitting 104 does not come off. On the right end, an upper hinge pin receiver 102c for receiving an upper hinge pin above the hinge for rotatably supporting the door is formed.

[0005] Reference numeral 103 denotes a door lower end piece constituting the lower end surface of the door, which has a groove on the outer periphery similarly to the door upper end piece 102, and into which a cut portion at the lower end of the door outer plate 101 is inserted. Further, a groove 103b for fitting and storing the lower reinforcing member 105 is provided on the inner side, and several hooking claws 103d are provided at the front end so that the lower reinforcing member 105 does not come off. On the right side, a pin receiver 103c for receiving a lower hinge pin below the hinge for rotatably supporting the door is formed.

The upper end and the lower end of the outer plate 101 are connected to the door upper end piece (the upper reinforcing fitting 104 is already fitted) and the door lower end piece (the lower reinforcing fitting 105 is already fitted). Of the door inner plate 106
The door is completed by urethane foaming. In addition, when the completed door is mounted on the refrigerator and operated, when the inside of the refrigerator cools, the temperature difference between the outside of the door and the inside of the door in summer is 30 ° C or more.
At 40 ° C., the urethane foam in the door expands on the outside and undergoes changes such as shrinkage on the inside, and the door starts to bend. Therefore, the upper reinforcing metal fitting 104 and the lower reinforcing metal fitting 105 prevent bending. There is.

An example of such a conventional technique is disclosed in Japanese Patent Laid-Open No.
It is disclosed in JP-A-121946.

[0008]

In the above-mentioned refrigerator door of the prior art, there are end pieces on the upper and lower sides of the door. It is conceivable to make it rotate. In this case, no horizontal line is formed at the joint of the doors, and a refreshing and novel design can be achieved. However, at this time, when the right side plate, which is the hinge side, is rotatably fixed by the upper and lower hinge pins of the door, the right side plate is stored in the storage portions provided on the door outer plate, the door inner plate, the urethane foam and the door inner plate. If the total weight of the food exceeds the bonding strength or withstand load with the urethane foam attached to the outer plate inserted in the groove of the side plate on the hinge side or the rib molded on the side plate, etc. The door may not be able to withstand the weight or the impact of opening and closing, and the door may be deformed, the urethane foam may be peeled off from the surface, the outer plate may come off from the groove in the side plate, and the door may be disassembled and damaged. In this way, in the conventional method of making a refrigerator door, the weight of the refrigerator door and the foods put in the storage part (pocket) of the door, the outer plate and the inner plate that are the components of the door from the side plate on the hinge side There is a risk that it will come off.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a refrigerator door having an improved strength in which components of the door are less likely to peel off from the hinge-side side plate when a load is applied to the refrigerator door.

[0010]

The object of the present invention is to provide a metal plate,
Side plates made of synthetic resin arranged on the left and right of this metal plate,
A bottom plate made of synthetic resin disposed at a lower portion of the metal plate,
A door of a refrigerator having a foamed urethane foam filled in a space formed by combining these, wherein the metal plate forms a part of an upper end face, a front face, and a lower end face of the door, and A groove formed in the face plate and engaging with the left and right ends of the metal plate; a groove provided on the bottom plate and engaging with the end of the lower end surface of the metal plate; and a curve provided on the upper end of the metal plate Door provided inside the curved portion and connected to the side plate on the hinge side of the door via a hinge pin, and connected to the side plate on the opposite side of the hinge and an upper reinforcing metal fitting. Is achieved by

After the projection provided below the side plate on the side opposite to the hinge is engaged with the engagement means on the side opposite to the hinge of the lower reinforcing metal fitting to be inserted into the bottom panel, the hinge of the bottom plate is previously provided. After aligning the lower hinge round hole provided on the side with the hinge side round hole of the lower reinforcing bracket, the hinge pin receiver of the lower hinge pin receiver formed with the lower hinge pin receiver is passed through the two round holes. Thereby, when the door is rotatably fixed to the refrigerator main body via the upper hinge and the middle hinge, the side plate on the side opposite to the hinge is pulled toward the hinge side from above and below the reinforcing bracket.

The bottom plate is sandwiched between the lower reinforcing member and the lower hinge pin receiving member so that the lower reinforcing member, the bottom plate, and the lower hinge pin receiving member are not separated from each other. This is achieved by fixing the seat and the bottom plate to the lower reinforcing metal fittings and then putting the seat and the bottom plate together with a door inner plate in a foaming foam of urethane foam.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The details of the present invention will be described below with reference to FIGS. FIG. 1 is a perspective view of a main part of a refrigerator door component showing an embodiment of the present invention. FIG. 2 is an external perspective view of the refrigerator showing one embodiment of the present invention. 3
1 is a cross-sectional view of a refrigerator door according to an embodiment of the present invention after foaming. FIG. 4 is a longitudinal sectional view after foaming of a refrigerator door showing one embodiment of the present invention. FIG. 5 is a view of the inside of the side plate of the refrigerator door showing the embodiment of the present invention. FIG.
FIG. 1 is a sectional view of a bottom plate of a refrigerator door showing one embodiment of the present invention. FIG. 7 shows a joint of a reinforcing member of a refrigerator door, a right side plate, and a hinge pin according to an embodiment of the present invention. FIG.
Is a joint portion between the upper reinforcement of the refrigerator door and the projection of the fixing portion of the left side plate, showing one embodiment of the present invention. FIG. 9 is a perspective view seen from below showing a combination of a bottom plate and a side plate of a refrigerator door according to an embodiment of the present invention.

In these figures, 1 is a refrigerator main body, 2
Is a refrigerator door, 3 is a hinge-side right side plate constituting the door 2,
Numeral 4 denotes a left side plate on the handle side. Both ends of the door surface 2b, the door upper end surface 2c and the door lower end surface 2d of the refrigerator door 2 are respectively provided in the grooves 3b and 4a of the side plates 3, 4 and the door lower end surface. Is inserted into the groove 5a of the bottom plate 5 to form the appearance of the door 2, and such components and the upper reinforcement 1 for preventing the door from bending.
1 and the lower reinforcing metal fittings 14 and the inner plate 12 are combined to form a foaming jig (not shown), and then the urethane foam 15 is foamed to form a door. The refrigerator is rotatable by the upper hinge pin 6 and the intermediate hinge pin 7. It is attached to the main body 1. However, in this state, the weight of the components of the door, the weight of the food stored in the inner plate of the door, and the door outer plate 2a maintained by the adhesive force of the urethane foam 15 due to the impact accompanying the opening and closing of the door.
May be separated from the surface of the door, and may be detached from the groove 3b of the side plate 3 on the hinge side or peeled off from a rib or the like, so that a door that is separated and disassembled and damaged may fall.

Next, a structure that can withstand a load, which is the present invention, will be described. ◆ Bending of a metal plate from one metal plate (door outer plate) 2a to door upper end surface 2c and door surface 2b
And a part 2d of the lower end surface of the door is formed.
The bottom plate 5 is formed of a synthetic resin. Next, the left and right cut portions of the door outer plate 2a correspond to the grooves 3b, 4 of the side plates 3, 4, respectively.
a. Further, the cut portion of the door lower end surface 2d of the door outer plate 2a is inserted into the groove 5a of the bottom plate 5, and the upper reinforcing metal fitting 11 is placed inside the bent upper end portion 2c of the outer plate 2c to prevent the left and right side plates from being separated. A square hole 11a is formed on the handle side of the upper reinforcing member 11 (an engaging means such as a hole or a projection is provided). The left side plate 4 on the handle side is positioned so as to be hooked on the square hole 11a of the upper reinforcing member 11. Is provided with a projection 4a (an engagement means such as a hole or a projection), and the upper reinforcing bracket 11 is inserted into the left side plate 4. As a result, the square hole 11a is hooked on the projection 4b.

Thereafter, the round hole 11b provided on the hinge side of the upper reinforcing metal 11 is inserted along the positioning of the upper reinforcing metal 11 provided on the right side plate 3 on the hinge side, and the round hole 11b is inserted into the hinge pin insertion hole. After being aligned with 3a, the upper hinge pin 6 is inserted into the round hole 11b of the upper reinforcing bracket 11 via the hinge pin insertion hole 3a of the right side panel 3, and the upper reinforcing bracket 11 is fixed so as not to come off from the right side panel 3. Is done.

Next, after the intermediate hinge hole 5b previously formed in the bottom plate is aligned with the round hole on the hinge side of the lower reinforcing bracket 14, the intermediate hinge pin 16 of the intermediate hinge bracket 16 in which the intermediate hinge pin 17 is formed. 7 is passed through the hole, and is further fixed to the lower reinforcing bracket 14 with screws 17 so that the three members are not separated. Then, it is put together with the door inner plate 12 in a urethane foam foam (not shown), foamed and solidified to form an integral door. The bottom plate 5 on the left side plate 4 side is provided with a recess 16a for accommodating the intermediate hinge fitting 16 and enabling the door to be opened to the left.

By adopting such a structure, the upper and lower end pieces, which constitute the conventional door, can be replaced with the left and right end pieces.
With the right side plate, even if the number of doors increases in the refrigerator appearance, the horizontal lines of the upper and lower end pieces for each door became inconspicuous, which was clearer, and both sides were clear It is possible to provide a refrigerator door that expresses unprecedented interior characteristics with a emphasized surface.

Further, since the upper reinforcing metal fitting at the upper end of the door also serves to prevent the door from being bent and preventing the left and right side plates from coming off, a heavy load is applied to the door or the door may be impacted by the impact on the door. It is possible to provide a highly safe door with a novel design without the possibility of the outer plate portion and the side plate on the hinge side peeling or disassembling.

[0020]

As described above, according to the present invention, a refrigerator door having improved strength can be provided.

[Brief description of the drawings]

FIG. 1 is a perspective view of a main part of a refrigerator door component showing an embodiment of the present invention.

FIG. 2 is an external perspective view of the refrigerator showing one embodiment of the present invention.

FIG. 3 is a cross-sectional view after foaming of the refrigerator door showing the embodiment of the present invention.

FIG. 4 is a longitudinal sectional view after foaming of the refrigerator door showing the embodiment of the present invention.

FIG. 5 is a view of the inside of the side plate of the refrigerator door showing the embodiment of the present invention.

FIG. 6 is a cross-sectional view of a bottom plate of the refrigerator door showing one embodiment of the present invention.

FIG. 7 shows a joint between an upper reinforcing metal fitting, a right side plate, and an upper hinge pin of a refrigerator door according to an embodiment of the present invention.

FIG. 8 shows a joint between an upper reinforcing bracket of the refrigerator door and a projection of a fixing portion of the left side plate, showing one embodiment of the present invention.

FIG. 9 is a perspective view of left and right portions viewed from below showing a combination of a bottom plate and a side plate of the refrigerator door according to the embodiment of the present invention.

FIG. 10 is an external perspective view of a conventional refrigerator.

FIG. 11 is a perspective view of a main part of a conventional refrigerator door.

FIG. 12 is a perspective view of a main part of components of a conventional refrigerator door.

FIG. 13 is a sectional view of an end piece on a door of a conventional refrigerator door.

FIG. 14 is a cross-sectional view of a conventional refrigerator door after foaming.

FIG. 15 is a longitudinal sectional view of a conventional refrigerator door after foaming.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Refrigerator main body 13 Right reinforcement metal 2 Refrigerator door 14 Lower reinforcement metal 2a Door outer plate (iron plate) 15 Urethane foam 2b Door surface 16 Intermediate hinge metal 2c Door upper end surface 17 Screw 2d Door lower end surface 18 Left reinforcement metal plate 3 Right side plate ( Hinge side) 101 Door outer plate 3a Hinge pin insertion hole 101a Door front part 3b Groove 101b Door left end face 4 Left side plate (handle side) 101c Door right end face 4a Groove 102 Door upper end piece 4b Fixed part protrusion 102a Door upper end piece Plate groove 5 Bottom plate, 5a groove 102b Door upper end piece reinforcing bracket groove 5b Intermediate hinge hole 102c Upper hinge pin receiver 6 Upper hinge pin 102d Door side upper end piece claw 6a Upper hinge fitting 103 Door lower end piece 7 Intermediate hinge pin 103a Door lower Side end piece groove 8 Lower hinge 103b Under door End piece reinforcing groove 9 Handle 103c Door lower end piece hinge pin receiver 10 Freezer compartment door 103d Door lower end piece claw 11 Upper reinforcing metal fitting 104 Upper reinforcing metal fitting 11a Square hole 105 Lower reinforcing metal fitting 11b Round hole 106 Door inner plate 12 Inner plate

Claims (3)

[Claims] 1. A metal plate, a side plate made of synthetic resin disposed on the left and right sides of the metal plate, a bottom plate made of synthetic resin disposed below the metal plate, and a combination thereof. A refrigerator door having a foamed urethane foam filled in a space, wherein the metal plate forms part of an upper end surface, a front surface, and a lower end surface of the door, and is formed on the side plate and the metal plate is formed. A groove that engages with the left and right ends of the metal plate, a groove that is provided on the bottom plate and engages with an end of the lower end surface of the metal plate, a curved portion that is provided at the upper end of the metal plate, A refrigerator door provided with an upper reinforcing metal member provided inside and connected to the side plate on the hinge side of the door via a hinge pin and connected to the side plate on the opposite side of the hinge. 2. A hinge provided on a lower side of the bottom plate after a projection provided below the side plate on the opposite hinge side is engaged with engaging means on the opposite hinge side of the lower reinforcing bracket inserted into the bottom plate. After the lower hinge round hole provided on the lower side and the hinge side round hole of the lower reinforcing bracket are aligned, the hinge pin receiver of the lower hinge pin receiver formed with the lower hinge pin receiver is passed through the two round holes. 2. The refrigerator according to claim 1, wherein when the door is rotatably fixed to the refrigerator body via the upper hinge and the middle hinge, the side plate on the side opposite to the hinge is drawn toward the hinge side from above and below the reinforcing bracket. door. 3. A bottom plate is sandwiched between the lower reinforcing bracket and the lower hinge pin receiving member so that the lower reinforcing member, the bottom plate, and the lower hinge pin receiving member are not separated from each other. The refrigerator door according to claim 1 or 2, wherein after the hinge pin seat and the bottom plate are fixed to the lower reinforcing bracket, the door is fitted with a door inner plate and placed in a foaming foam of urethane foam to foam.