JP3420441B2 - Refrigerator door - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a refrigerator door in which urethane foam is injected into a space closed by a door outer plate, a sash, and a door inner plate.

[0002]

2. Description of the Related Art FIG. 7 is a sectional view of a conventional refrigerator door disclosed in, for example, Japanese Patent Laid-Open No. 6-50654. In the figure, when the urethane foam 7 is injected into the space 8 closed by the door outer plate 3, the sash 5, and the door inner plate 4 to form a door body, the urethane is added from the overlapping surface of the sash 5 and the door inner plate 4. In order to prevent the foam 7 from leaking to the outside, a fin 5a having a special shape is provided on the end surface of the sash 5, and the fin 5a adheres to the back surface of the door inner plate 4 due to the foam internal pressure to prevent foam leakage. Since no sealant is used, it is possible to provide a refrigerator door that is inexpensive in terms of component structure.

[0003]

The door of the conventional refrigerator is
Since the fins 5a are configured as described above, there is a problem that the fins 5a are deformed after molding and a sufficient sealing property cannot be obtained, and the corners or the like are weak against the foaming pressure other than the vertical direction with respect to the fins 5a. It was

The present invention has been made in order to solve the above problems, and when pouring urethane foam into the space closed by the door outer plate, the sash, and the door inner plate, the sash is used. It is an object of the present invention to provide a refrigerator door that is inexpensive and has a component structure that does not have the above-mentioned problems and that eliminates the sealing member that is interposed in the overlapping portion of the door inner plate.

[0005]

A refrigerator door according to the present invention has a door outer plate, a sash, and a door inner plate, and is a refrigerator door formed by filling and foaming urethane foam inside.
It is provided at the end of the sash on the urethane foam side and is formed along the door inner plate, so that at least the gap between the inner rising part and the apex and the back surface of the flange of the door inner plate reduces leakage when foaming urethane foam. The small convex portion, the soft member that is erected on the sash adjacent to the convex portion, and that is in close contact with the overlapping portion of the sash and the door inner plate, and the sash that is erected on the sash adjacent to the soft member. And a space between the soft fins and the hard fins, or between the hard fins.

Also, the door of the refrigerator according to the present invention is characterized in that the soft member has a fin shape or a tube shape.

Further, in the refrigerator door according to the present invention, the corner portion of the door inner plate is formed so as to have an R shape outside the intersecting portion when each side of the door inner plate is straightened. Characterize.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiment 1. Embodiment 1 of the present invention will be described below with reference to FIGS. 1 is a perspective view of a refrigerator according to a first embodiment of the present invention. FIG. 2 is a perspective view showing a door of the refrigerator. FIG. 3 is a sectional view taken along the line AA of FIG. In the figure, 1 is a refrigerator box, 2 is a door, 3 is a door outer plate, and 4 is a door inner plate formed by molding a resin sheet. Numeral 5 is a sash capable of forming a hard fin and a soft fin by partially extruding a hard material by extrusion molding. Reference numeral 6 is a gasket that is interposed between the box body 1 and the door 2 to seal cold air.
7 is a space 8 closed by a door outer plate 3, a sash 5, and a door inner plate 4.
It is a urethane foam for heat insulation. Reference numeral 4a denotes a back surface of the flange of the door inner plate 4, and when urethane is foamed, the urethane foam 7 enters between the back surface 4a of the flange and the sash 5 to bond them. Reference numeral 9 denotes a jig that holds each part in order to prevent the urethane foam 7 from leaking when the urethane foam 7 is filled and the parts are deformed or the seal part is opened by the foaming pressure.

FIG. 4 is an enlarged sectional view of a main part of the refrigerator door according to the first embodiment of the present invention. In the figure, 4b is a gap between the door inner plate 4 and the sash 5, 5a is a soft fin provided on the sash 5, 5b is a hard fin provided on the sash 5, and 5c is a recess provided between the fins of the sash. It is a space part of the shape.
The flange back surface 4a of the door inner plate 4 is in close contact with the soft fins 5a and the hard fins 5b of the sash. The dimension a is the apex of the door inner plate 4 and the sash 5, and the dimension b is the rising portion of the door inner plate 4 and the sash 5.

By fitting the door inner plate 4 to the shape of the sash 5 in the process of foaming the urethane foam 7,
Foam leakage can be reduced by reducing the size a and the size b by forming the door inner plate 4 into a shape that narrows the clearance 4b with the sash 5. Further, the soft fin 5a prevents foam leakage, the urethane foam 7 leaked from the soft fin 5a is stored in the space 5c, the hard fin 5b suppresses foam leakage, and the urethane foam leaks from the hard fin 5b into the space 5c. Collect 7. With these configurations, leakage to the product design surface can be prevented.

Embodiment 2. The second embodiment of the present invention will be described below with reference to the drawings.
FIG. 5 is an enlarged sectional view of a main part of a refrigerator door according to the second embodiment of the present invention. In the figure, 4b is a door inner plate 4 and a sash 5
5d is a soft tube shape provided on the sash 5 and 5b is a hard fin provided on the sash 5.
Is a concave space formed between the fins of the sash and the shape of the fin or tube. The flange back surface 4a of the door inner plate is in close contact with the soft fins 5a and the hard fins 5b of the sash. Dimension a
Is the apex of the door inner plate 4 and the sash 5, and the dimension b is the rising portion of the door inner plate 4 and the sash 5.

By aligning the door inner plate 4 with the shape of the sash 5 in the process of foaming the urethane foam 7,
Foam leakage can be reduced by reducing the size a and the size b by forming the door inner plate 4 into a shape that narrows the clearance 4b with the sash 5. The foam tube leakage is suppressed by the soft tube shape 5d, and the soft tube shape 5 is provided in the space 5c.
The urethane foam 7 leaking from d is stored, the foam leak is further suppressed by the hard fin 5b, and the urethane foam 7 leaking from the hard fin 5b is stored in the space 5c. With these configurations, leakage to the product design surface can be prevented. Here, the advantage over the soft-tube shaped fin is that it has a large contact surface area with the inner door plate 4 and a high effect of preventing foam leakage.

Embodiment 3. FIG. 6 is a view of a corner portion when the door inner plate 4 and the sash 5 are assembled. 4c is R at the corner of the inner plate 4 of the door,
By forming the corner portion in conformity with the shape of the sash 5, the above-mentioned structure can be taken over the entire circumference of the door, and foam leakage can be prevented.

[0014]

The door of the refrigerator according to the present invention is provided at the urethane foam side end of the sash and is formed along the door inner plate, and at least the gap between the rising part and the apex and the door inner plate is made of urethane. Adjacent to the soft member, which is made smaller so as to reduce leakage during foam foaming, and a soft member that is erected upright on the sash adjacent to the convex part and that is in close contact with the overlapping portion of the sash and the door inner plate. Then it was erected on the sash,
A hard fin that sticks to the overlapping part of the sash and the inner plate of the door,
By providing a space formed between the soft member and the hard fins or between the hard fins, eliminating urethane foam leakage between the door inner plate and the sash without using a separate member. In addition, the effect of preventing foam leakage is higher than the conventional specification with only fin shape.

Further, in the door of the refrigerator according to the present invention, since the soft member is fin-shaped or tube-shaped, the effect of preventing foam leakage is further enhanced.

[0016]

The refrigerator door according to the present invention is provided at the urethane foam side end of the sash, is formed along the door inner plate, and has at least the inner rising portion and the apex and the flange back surface of the door inner plate . And a convex portion whose gap is reduced to reduce leakage when foaming urethane foam, and a soft member that is erected upright on the sash adjacent to the convex portion and adheres to the overlapping portion of the sash and the door inner plate. , A hard fin that is erected upright on the sash adjacent to the soft member and that is in close contact with the overlapping portion of the sash and the door inner plate, and a space formed between the soft member and the hard fin, or between the hard fins. By providing the and, it is possible to eliminate the urethane foam leakage between the door inner plate and the sash without using a separate member,
The effect of preventing foam leakage is higher than the conventional specification with only fin shape.

[Brief description of drawings]

FIG. 1 is a perspective view of a refrigerator according to a first embodiment of the present invention.

FIG. 2 is a perspective view of a refrigerator door according to the first embodiment of the present invention.

3 is a cross-sectional view taken along the line AA of FIG.

FIG. 4 is an enlarged sectional view of a main part of the door of the refrigerator according to the first embodiment of the present invention.

FIG. 5 is an enlarged sectional view of a main part of a refrigerator door according to a second embodiment of the present invention.

FIG. 6 is an assembly shape diagram of a door inner plate and a sash at a door corner portion of a refrigerator door according to Embodiment 3 of the present invention.

FIG. 7 is a structural diagram of a conventional refrigerator door.

[Explanation of symbols]

1 Refrigerator box, 2 Doors, 3 Door outer plates, 4 Door inner plates, 4
a Flange back surface, 4b Gap with sash, 4c Corner of sash, 5 sash, 5a Soft fin, 5b
Hard fin, 5c space, 5d soft tube shape,
6 gasket, 7 urethane foam, 8 space enclosed by door outer plate, sash and door inner plate, 9 jig.

─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-6-50654 (JP, A) JP-A-2-242077 (JP, A) Actual development Sho-59-175991 (JP, U) (58) Investigation Field (Int.Cl. ⁷ , DB name) F25D 23/02 304

Claims (3)

(57) [Claims] 1. A door of a refrigerator having a door outer plate, a sash, and a door inner plate, wherein the interior of the sash is filled with foam, and provided at the end of the sash on the urethane foam side. A convex shape portion formed along the plate, in which a gap between at least the inner rising portion and the apex and the back surface of the flange of the inner plate of the door is reduced so as to reduce leakage when urethane foam is foamed; A soft member that is erected on the sash adjacent to the convex portion, and is in close contact with the overlapping portion of the sash and the door inner plate, and is erected on the sash adjacent to the soft member, and the sash is A refrigerator comprising: a hard fin closely contacting the overlapping portion of the inner plate of the door; and a space formed between the soft member and the hard fin, or between the hard fins. Door. 2. The door of the refrigerator according to claim 1, wherein the soft member has a fin shape or a tube shape. 3. A corner portion of the door inner plate is formed by giving an R shape outside a portion intersecting when each side of the door inner plate is straightened. The refrigerator door according to claim 2.