JPS6326704Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention is an insulating box body used for refrigerators, etc., in particular, an inner box, a left side plate, a right side plate, a rear plate, and a top plate are each provided as independent parts. The present invention relates to a rectangular heat-insulating box body in which each component is connected via an engaging means that each component has.

[Technical background of the invention]

For example, in an insulated box for a refrigerator, the top opening of a rectangular box-shaped steel body is closed by a top plate serving as a table board, and the top plate, the steel body, and the steel plate body are inserted into the top plate, the steel body, and the steel body. There is a structure in which a heat insulating material is foamed and filled into the spaces formed between the inner boxes. The top plate used in this case has conventionally been constructed by combining a front frame, a left frame, a right frame, and a rear frame, each made of plastic injection molding, into a rectangular frame, and a melamine board or a The structure is such that a rectangular board made of a colored steel plate or the like is inserted, and is attached to the steel plate main body by screwing.

[Problems with background technology]

However, with the above conventional configuration, the number of parts that make up the top plate and the number of man-hours for assembling the top plate are large, and in addition, tedious screw-fastening work is required to attach the top plate, resulting in overall high costs. . In addition, since there are many gaps between the parts that make up the top plate, many sealing members are required to prevent leakage of the filled insulation material in these areas, which also causes a problem that increases costs. .

[Purpose of invention]

The present invention was developed in view of the above circumstances, and its purpose is to significantly reduce the number of parts of the top plate and the number of man-hours for assembling the top plate, and to simplify the installation work of the top plate. The object of the present invention is to provide a heat insulating box body which can reduce the number of sealing members for preventing leakage of the filled heat insulating material and can reduce the cost overall.

[Summary of the idea]

The present invention provides folded pieces that are bent inwardly over almost the entire area of the inner box, left side panel, right side panel, and rear panel, which are provided as independent parts, at the upper ends of each of the inner box, left side panel, right side panel, and rear panel. A plate is integrally molded from plastic, and each of the folded pieces is press-fitted into the peripheral edge of the plate, and in this press-fitted state, each of the folded pieces, the inner box, the left side plate, the right side plate, and the rear plate are It is characterized by a configuration in which an engaging recess is provided in which the outer surface of each upper end portion is pressed into contact with each other, and a retaining protrusion is provided in the engaging recess with which each folded piece comes into contact in a manner that prevents the folded piece from coming off. The top plate is attached and fixed by the engagement between the engagement recess and the folded piece and the retaining action of the retaining protrusion;
The sealing action around the top plate during foam filling of the heat insulating material is achieved by engaging the press-contact portion between the folded piece and the engagement recess, as well as the outer surface of each upper end of the inner box, left side plate, right side plate, and rear plate. This can be achieved at two locations, each of which is in pressure contact with the recess.

[Example of idea]

Hereinafter, an embodiment in which the present invention is applied to a two-temperature refrigerator will be described with reference to the drawings.

Reference numeral 1 denotes a rectangular box-shaped freezer compartment cooler serving as an inner box, and has a rectangular plastic insulating frame 2 at the front opening edge thereof. On the four peripheral edges of the insulating frame 2,
Flange portions 2 serving as engagement means directed outward, respectively.
a, 2b, 2c, and 2d are integrally formed to extend, and a metal reinforcing frame 3 is fitted and fixed to the upper edge flange portion 2a. Further, a folded piece 3a serving as an engagement means is provided on the upper edge of the reinforcing frame 3 over substantially the entire area thereof and is bent inward in an inverted U-shape. Reference numerals 4 and 5 denote a left side plate and a right side plate made of rectangular steel plates, each having a folded piece 4 which is an engagement means and is bent inwardly into an inverted U-shape at the upper end edge of each side plate.
a and 5a are provided over substantially the entire area thereof, and engaging means (not shown) are also provided at the other front, rear, and lower edge portions, respectively. Reference numeral 6 denotes a rear plate made of a steel plate having a rectangular shape, and a folded piece 6a serving as an engagement means is provided on the upper edge of the rear plate, which is curved inward in an inverted U-shape over almost the entire area of the rear plate. In addition, engaging means (not shown) are also provided at the other left, right, and lower edge portions, respectively. Although not shown, flange portions serving as engagement means are also provided on the four peripheral edges of the rectangular front opening of the plastic inner box constituting the refrigerator compartment, and the rectangular plastic bottom plate is provided with flange portions serving as engagement means. Engagement means are also provided at the front, rear, left, and right end edges, respectively, and these engage the inner box (not shown), the bottom plate, the freezer compartment cooler 1, the left side plate 4, the right side plate 5, and the rear plate. 6
are connected through their respective flanges and engaging means, thereby forming a box body 7 having an opening 7a on the top surface as shown in FIG.

Now, reference numeral 8 denotes a top plate which is fixedly attached to the upper end of the box body 7 so as to close the upper surface opening 7a, and this will be described below. That is, 9 is a rectangular main body integrally molded from plastic;
A rectangular recess 9 forming a table board surface on its upper surface
a is formed, and downwardly oriented flange portions 9b are integrally formed and extended from the four peripheral edges. A rectangular frame-shaped protrusion 9c is integrally formed on the lower surface of the main body 9 and extends parallel to the flange part 9b at a predetermined distance. An engagement recess 10 serving as engagement means is formed. Further, a retaining protrusion 11 that protrudes into the engagement recess 10 is provided at the lower end of the protrusion 9c.
are integrally formed. A plurality of positioning and reinforcing ribs 9d are integrally formed at predetermined intervals in the deep part of the engagement recess 10, and extend downward by a certain length from the deep part, and in this case, the ribs 9d
is shaped such that a notch 9e exists between it and the flange 9b. Note that this notch 9e is provided so that when the main body portion 9 is integrally molded, there is no sinkage in the portion corresponding to the rib 9d on the outer surface of the flange portion 9b, and therefore, the notch 9e is necessary. It is sufficient to set it according to the situation. moreover,
At the front end of the main body part 9, a plurality of engagement holes 12 are formed in horizontal rows in the upper part of the flange part 9b, and a shelf part 13 extending forward is integrally formed in the lower part of the flange part 9b. It is formed in
An engaging piece 14 that rises upward is integrally formed at the front end of the shelf 13. On the other hand, reference numeral 15 denotes a cover part integrally molded from plastic, which has a rectangular container shape with an open rear face, and has a plurality of engaging claws 15a on the rear edge of its upper face part to be engaged with the engaging hole 13. are integrally formed, and a plurality of engaging claws 15b that are engaged with the engaging piece 14 are integrally formed on the rear end edge of the lower surface portion. As a result, the cover part 15 has the engaging part 1 on the front surface of the main body part 9.
5a and 15b are attached and detached, and in the attached state, the shelf portion 1
A storage section 16 is formed between the two. The storage section 16 is provided with, for example, a control unit for a refrigerator, and the front surface of the cover section 15 is provided with a window section 15c for installing an operation panel for the control unit.

Therefore, when attaching the top plate 8 having such a configuration to the upper end of the box body 7, the reinforcing frame 3, the left side plate 4, the right side plate 5, and the rear plate are inserted into the engagement recess 10 of the top plate 8. Each folded piece part 3a, 4a, 5a and 6 of 6
a into press-fit engagement. Then, each folded piece 3
The top plate 8 is positioned by the tops of the ribs 9d a, 4a, 5a and 6a coming into contact with the lower surface of the rib 9d, and the folded pieces 3a, 4a, 5a,
and 6a come into contact with the retaining protrusion 11 to prevent the top plate 8 from coming off, and in this way the top plate 8 is attached and fixed to the upper end of the box body 7. Then, in the mounting state as described above, in other words, each folded piece 3 is installed in the engagement recess 10 of the top plate 9.
When a, 4a, 5a, and 6a are press-fitted, the folded pieces 3a, 4a, 5a, and 6a are in pressure contact with the retaining protrusion 11 in the engagement recess 10, and the reinforcing frame 3, left side plate 4,
The outer surfaces of the upper ends of the right side plate 5 and the rear plate 6 are brought into pressure contact with the inner surface of the flange portion 9b. Furthermore, after this, a heat insulating box body 18 is formed by foaming and filling a heat insulating material 17 into the space formed between the box body 7 and the top plate 8 and the like.

According to the present embodiment described above, the attachment and fixation of the top plate 8 to the box body 7 is performed by each of the folded pieces 3a to 6a.
This is achieved by the engagement between the ridges 9c and the engagement recesses 10, and this fixed state is achieved by the retaining action of the retaining protrusions 11 and the foaming pressure of the heat insulating material 17 against the protrusions 9c as shown in FIG. and arrow A in Figure 3.
It acts as shown in Figure 2 to tighten the engagement state and is firmly held by the adhesiveness of the heat insulating material 17. Therefore, when attaching and fixing the top plate 8, the conventional This eliminates the need for such troublesome screw-fastening work and simplifies the installation work.
Moreover, since the top plate 8 is composed only of the main body part 9 and the cover part 15, each of which is made of integrally molded plastic, the number of parts and the number of assembly steps can be significantly reduced compared to the conventional one. As mentioned above, the installation work of the top plate 8 can be simplified, and the cost can be reduced. In addition, the contact portions between the folding pieces 3a to 6a and the retaining protrusions 11, which are provided over substantially the entire upper edge of each of the reinforcing frame 3, the left side plate 4, the right side plate 5, and the rear plate 6, are also reinforced. Frame 3,
Leakage can be prevented during foam filling of the heat insulating material 17 at two locations, namely the pressure contact portions between the outer surfaces of the upper ends of the left side plate 4, the right side plate 5, and the rear plate 6 and the inner surface of the flange portion 9b. Since the pressure contact portion between the outer surface of each upper end portion such as No. 3 and the inner surface of the flange portion 9b is in surface contact with each other, the above-mentioned leakage prevention effect is further improved. Therefore, the required number of seal members used to prevent leakage of the heat insulating material 17 can be reduced, and manufacturing costs can be further reduced.

The present invention is not limited to the embodiments described above and shown in the drawings, but can be applied to, for example, single-temperature refrigerators, refrigerated storage cases, frozen stockers, etc., and may be modified as appropriate without departing from the gist thereof. It can be modified and implemented.

[Effect of idea]

According to the present invention, as is clear from the above explanation, the number of parts of the top plate and the number of man-hours for assembling the top plate can be significantly reduced, and the work of installing the top plate can be simplified. It is also possible to reduce the number of sealing members for preventing leakage of the filled heat insulating material, which has an excellent effect of reducing costs overall.

[Brief explanation of the drawing]

The drawings are for explaining one embodiment of the present invention. Figure 1 is an exploded perspective view of the upper part of the insulation box, Figure 2 is a longitudinal sectional front view of the same part, and Figure 3 is a longitudinal sectional side view of the main part. It is. In the figure, 1 is a freezer cooler (inner box), 3 is a reinforcing frame, 4 is a left side plate, 5 is a right side plate, 6 is a rear plate, 3a,
4a, 5a, 6a are folded pieces, 8 is a top plate, 1
0 is an engagement recess, 11 is a retaining projection, 17 is a heat insulating material, and 18 is a heat insulating box.

Claims (1)

[Scope of utility model registration request] The inner box, left side plate, right side plate, rear plate, and top plate are each provided as independent parts, and each part is connected through its own engagement means, and the space formed by these parts is insulated. In a rectangular insulating box body configured to be foam-filled with material, folded pieces are bent inwardly at the upper end edges of the inner box, the left side plate, the right side plate, and the rear plate, respectively, over substantially the entire area thereof. and the top plate is integrally molded from plastic, and each of the folded pieces is press-fitted to the peripheral edge of the top plate, and in the press-fitted state, each of the folded pieces, the inner box, the left side plate, Engagement recesses are provided in which the outer surfaces of the upper ends of the right side plate and the rear plate are brought into pressure contact with each other, and a retaining protrusion is formed in the engagement recess with which each of the folded pieces abuts in a manner that prevents the flaps from coming off. An insulated box body characterized by: