JPS5921969A - Manufacture of heat-insulating door of refrigerator - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to the manufacture of a heat insulating door for a refrigerator in which a heat insulating material such as foamed urethane is filled and formed between a door outer panel and a door inner panel.
Related to payment.

[Technical compensation of the invention] Cold yii3i offshore insulation door (Goatsu C has [R outer panel iron 1
Anti) Formed from this place! Conventionally (1, 11), the inner part is formed of plastic, and the side plate part is formed by bending the four sides of the outer part, and the four regular sides of the inner plate are bent at several parts on the west side. To prevent screws, the structure was such that a heat insulating material was filled between the outer door panel and the inner panel.-A gasket was installed around the inner panel using the so-called pop-in method. (K, space 1] Width J at back 7j, sushi narrow width f]
I'm losing my groove.

[Problems with background technology]

Since the west side of the door outer panel is bent to form the side (ru) part, a bending mold of a size that matches the size of the door outer panel is required, and the "horizontal" method is the same. If C and vertical = J pay are different, a separate mold must be prepared for that purpose, which increases the cost of manufacturing the door outer panel and, ultimately, the heat insulating door.Also, there is a problem in that the cost of manufacturing the door outer panel and the insulated door increases. (Since the opening width of the J groove is narrower than the width of the depth, it is difficult to mold the inside of the J groove, especially when molding the inner panel of a doll's door.) However, there was a problem in that it was no longer possible to perform the so-called snap-in method C. f = J (j).

[Purpose of the invention]

This method can improve the versatility of the mold for the door outer panel, reduce manufacturing costs, and also has a large heat insulating m'c'. A method for manufacturing an insulating door for a refrigerator that can be easily attached to the gasket 1 using a snap-in method, and that the gasket 1 prevents leakage when filling the insulation material. It's up to you what you want to offer.

[Summary of the invention]

In the present invention, a side plate portion is formed by bending one set of corresponding both sides out of the four sides of a door outer plate, and a side frame is attached to the remaining set of corresponding both sides. When the four sides of the inner plate of a door having four steps are attached to the side plate and side frame, the opening becomes narrower than the back due to the cooperation of the recessed step, the side plate, and the side frame. By covering with the structure that forms one groove, the outer plate has the same dimensions on either the vertical or horizontal side (if available, the usage is 1 or 5' + 5'
] (In order to improve the versatility of the mold, it is better to bend and form the four parts in the same molding process.) - C-made Jro A1 In addition to reducing
Is it possible to get a carp 114215 type C 4”J?
However, it has become possible to seal between the side edges, side frame, and door inner plate using 6 caskets, and heat insulation (A filling 11. Y
This is to prevent A3 leakage.

[Embodiments of the invention]

An embodiment of the present invention will be described below based on the drawings. First, in Figures 1 to 3, there is J5, and 1 is the outside plate made of, for example, a colored steel plate, and this is shown on a pair of corresponding sides along the longitudinal direction of the west side, and 4T is shown. By bending the bending mold into a substantially U-shape, a side plate part 2 having a presser plate part 2a which is bent by internal force is formed on the upper edge of the C part.

Reference numerals 3 and 4 denote two side frames made of Plus Deck, and both of these side frames 3 and 4 are in the shape of a long and narrow rectangular container with one side open. A claw 6 corresponding to the small hole 5 is provided in a protruding manner, and protrusions 7.8 are provided on the inner pallet surface to face each other at a predetermined interval on both sides 13a, 31) and 4a, 4b along the longitudinal direction. It is protruded intermittently. Reference numeral 9 designates an interior plate made of plastic, which has a protrusion 9a for forming and covering a pocket for storing bottles and the like. A flange 11 corresponding to a four-step part is extended through a falling part 10 on the four sides of the door inner plate 9, and two corresponding sides along the longitudinal direction of the four sides of this flange 11 are provided. A rising portion 13 is provided upright between the above-mentioned falling portion 10 (J-concave portion 12 is formed), and this rising portion 13 is
A pressure contact plate portion 14 is provided to extend outward at the tip end edge of the pressure contact plate portion 14 . In this case, both the falling portion 10 and the rising portion 13 are formed so as to be inclined diagonally outward, thereby making it easier to remove the mold from the mold.

In addition, the height 1 H of the rising portion 13 is the distance dimension 1 between the protruding piece and the holding plate portion 2a when the side frames 3 and 4 are attached to the door outer panel 1 as described later. (see Figure 5). 15 is a protrusion 17 for magnets 1 to 1 (to the right of 5), and a medium-purple protrusion 17 is provided on both sides of the tip of the protrusion 17 for handle 4. The fins 1ε3, 19 serving as the base portions are formed in steps jη.

Next, we will explain the procedure for manufacturing a heat insulating door using each part of the above structure. First, attach the side frame 3 to one side of the set of songs on the door outer panel 1, that is, to the back of both sides in the longitudinal direction.
J and Uniruru block the gap between the two opposite sides. In this case, the side frame 33 is placed over the outside of the stone outer plate 1, and the claws 6 on both sides thereof are elastically engaged with the small holes 5 of the side plate parts 2 on both sides, as shown in FIG. , the side frame 3 is attached in a manner that prevents it from coming off. Thereafter, as shown in FIG. 3, the inner panel 9 is inserted into the outer panel 1 from the other unclosed longitudinal side of the outer panel 1. Of the flanges 11 on both sides in the longitudinal direction of the C1 door inner plate 9, the flange '11 on this side that is inserted first is placed on the projecting piece 7 of the side frame 3. Then, since the height of the rising portion 13 is determined to be larger than the distance dimension 11 between the protruding piece 7 and the holding plate portion 2a, the height of the rising portion 13 is set at two points in FIG. 3 (') It is elastically deformed from the state shown by the I line to the state shown by the solid line C, and the elastic force C presses the pressing plate part 14 against the holding plate part 2a. Of these, attach the side frame 1 to the other side and -C1 both side plate parts 2
Try to close the gap.

In this case, as described above, the claws 6 elastically engage with the small holes 5, so that the side frame 4 is fixed to the DP outer panel 1 in a manner that prevents it from coming off, and the door inner panel 9 is fixed on both sides in the longitudinal direction. The flange on the other side is placed on the protruding piece 7 of the side frame 4, and the flanges 11 on both sides in the longitudinal direction are both supported by the protruding piece 7, so that the pressure contact plate part 14 covers almost its entire length. It comes into pressure contact with the holding plate portion 2a. On the other hand, the retaining plate portion 2a of the door outer panel 1 faces into the concave portion 12 of the door inner panel 9 and partially blocks the opening from the outside, and as a result, the retaining plate portion 2a of the door outer panel 1 side Part 2
a and the grooved part 12 on the door inner plate 9 side, the frontage part 20a
A groove 20 having a width narrower than the width at the rear is formed.

Also, the side walls 3a of the side frames 3 and 4.

4a faces the flanges 11 on both sides in the longitudinal direction of the door inner plate 9 with a predetermined spacing, and as a result, the side walls 3a, 4a of the side frames 3, 4 and the falling part 10 on the side of the inner plate 9
And the width of the lower part 21a between the flange '1'1 and the cooperator-C1 is 1. ) A narrow angle gap 21 is formed.

C, as above C, outer panel 1° door inner panel 9. side frame 3,
4 together to form the door body 22.
The protrusion 77 for f-trimming can be pushed in. IRf: The fin 18.19 of the protrusion 17 for J is removed (=) l
The inside of the gasket 1 is in contact with the falling part 10 and the holding plate part 2a, and the part a3 in the mounting groove 21 is in contact with the falling part 1o and the side walls 3a and 4a of the side plates 3.4, and the gasket 1 is attached by the so-called snap-in method. The turf] is attached along the four sides of the inner 4 9. In this way, the gas 1
5, a heat insulating material 23 such as urethane foam is filled and covered between the door outer panel 1 and the inner door temporary 9. During the foaming process of this heat insulating material 23, there is 1!fI within 20.21 seconds
Suppose that the heat material 23 leaks (J, Casket 1-15) In 18.19 is the falling part 10° Presser plate S) (2a
, IBM frame 3.4 side "4r3a, 4ak: Because they are in contact and sealed, there is a risk that the insulation material 23 may leak to the outside through the openings 20a, 21a of 20.21 in dimension f1. Therefore, the seal structure for preventing leakage of the heat insulating material 23 need not be too strict.

(Effects of the Invention) Is it clear from the above description that the present invention forms side plate parts by bending them only on one set of both sides corresponding to the openings on the west side of the tenon on the outer panel of the door? By making the mold for bending the side plate with the longest side of the back of the side plate of each type of outer plate and placing it in place, you can make the vertical and If one of the side panels has the same door outer panel, the side panels can be bent and formed using the same mold even if the dimensions of the other panel are different. Therefore, the versatility of the bending mold is increased, and the manufacturing cost of the door outer panel and heat door is reduced to 1.
can be reduced. In addition, since the mounting groove is formed by the cooperation between the internal panel, the door outer panel, and the side frame, there is no need to pre-form a narrow mounting groove inside the door, and therefore the doll Gaskets can be easily installed using the so-called snap-in method. Furthermore, after installing the gasket, 1 l Ji
F,! Even if 19 people were inside the room, the sealing action of the retaining part of the cassette l- would prevent it from leaking outside. Do not seal too tightly between the outer panel of the door, the side frame, and the inner panel! It has excellent effects such as being able to use it without any hassle.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, and Fig. 1 is a sectional view of a heat-insulating door, and Fig. 2 is a cross-sectional view of a heat-insulating door.
3 is an exploded perspective view, FIG. 4 is a perspective view in the middle of being pulled up, and FIGS. 5 and 6 are taken along lines v-v and Vl in FIG. 4, respectively.
- An enlarged n-plane view taken along the Vl line, FIG. 7 (This is a cross-sectional view that does not show the elastic deformation state of the JΩ uphill part. In the figure, 1 is the door outer machine, 2 is the side plate part, 3 and 4 are the side frames, 9 is 1
Temporary inside pan, 11 is 7 langes (recessed step part), 15 is gas grip, 17 is protrusion for take-out, 18.19 is fan 1 (removal prevention part)
, 20. 21 are taken; J groove, 22 is the door body, and 23 is the heating point C. Figure 3 Figure 4 M

Claims (1)

[Claims] 1. A door outer panel with bent side panels on one set of corresponding sides on the west side, and a door panel with bent side panels on the other set of the corresponding side panels on the west side, and a door panel with bent side panels on both sides of the door outer panel. When the west side is attached to the side plate and the side frame, the four-step part cooperates with the side plate and the side frame. A gasket with a narrow opening (forming a Q groove) and the covering door inner plate forms the door body, and a gasket with a protruding mounting protrusion that has a stopper at its tip is inserted into the F1 groove. A method for manufacturing a heat insulating material for a refrigerator, which is attached to the door body by inserting a protrusion for J, and then filling the front door body with a heat insulating material.