JP3192941B2 - Insulated box - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat insulating box formed by filling a heat insulating material between an inner box and an outer box.

[0002]

For example, a heat insulating box of a refrigerator is constructed by housing an inner box in an outer box and injecting a heat insulating material such as urethane foam between the two boxes. FIG.
2 to 14 show a conventional structure of the outer box. As shown in FIGS. 12 and 13, the outer box is provided with a left side plate 2, a right side plate 3, a rear plate 4 (see FIG. 14) and a front plate in a groove 1a of a table board 1 (hereinafter referred to as a TB frame). 5, the opening 1b of the TB frame 1 is closed by the top plate 6.

In this configuration, a first flange 7 extending in the vertical direction is formed at the front and rear ends of the side plates 2 and 3, as shown in FIG. 7, only the flanges 8 of the rear plate 4 and the front plate 5 (only the flanges 8 of the rear plate 4 are shown) are fitted to the first flange portion 7, and between the plates 2 to 5 Are connected.

In the above conventional outer case, since the first flange portion 7 is opened upward, the putty 9 is pushed into the upper end portion of the first flange portion 7 to prevent urethane leakage and moisture absorption. However, since it is difficult to perform the pressing work of the putty 9, there is a case where there is a variation in the performance of preventing both urethane leakage and moisture absorption at the front and rear ends of the side plates 2 and 3.

A second flange portion 10 extending in the lateral direction is provided at the center of each of the side plates 2 and 3 (excluding the front and rear ends).
(Only the second flange portion 10 of the left side plate 2 is shown), and as shown in FIG. 13, in the central portion of each of the side plates 2 and 3, the second flange portion 10 is attached to the wall portion of the TB frame 1. Sealing was carried out by contacting with 1c to prevent urethane leakage. For this reason, urethane leakage is sufficient, but there is room for improvement in preventing moisture absorption.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a heat insulating box in which a stable urethane leakage prevention performance and a stable moisture absorption prevention performance can be obtained in each part of a left side plate and a right side plate. is there.

[0007]

According to a first aspect of the present invention, there is provided an insulating box body, wherein an inner box is housed in an outer box and a heat insulating material is filled between the outer box and the inner box. Outer boxes are provided on the left and right plates and on the front and rear ends of these side plates.
Re: a first flange portion upper end extending in the longitudinal direction is opened, and a second flange portion, wherein the extending Re et provided at an upper end portion laterally of the side plates, the addressed from the lower surface to the second flange portion of each side plate An upper plate, a sheet-like first sealing material interposed between the front and rear ends of each upper plate and the first flange portion, and the upper plate placed on the upper surfaces of the second flange portions.
The top plate screwed to the second plate and the second flange portion of each side plate and the top plate are interposed between the top plate and compressed by the fastening force of the screw.
And a second sealing material sheet which, each top plate is pre
It is characterized in that it is pressed against the lower surface of the second flange portion by the fastening force of the screw . According to the above means, the upper plate is applied to the lower surface of the second flange portion of each side plate, the first sealing material is interposed between the front and rear ends of each upper plate and the first flange portion, and the second flange portion of each side plate is provided. After the second sealing material is interposed between the top plates, the top plate is screwed to each upper plate. Then, as each upper plate and the top plate are attracted, each upper plate is pressed against the lower surface of the second flange portion, and the second sealing material is compressed between each second flange portion and the top plate. In this case, double sealing such as pressure contact between the upper plate and the second flange portion and compression of the second seal material is performed, and the sheet-like first seal material is interposed between the front and rear ends of each side plate. In each part, stable urethane leakage prevention performance and moisture absorption prevention performance can be obtained.

According to a second aspect of the present invention, at least one end of each upper plate covers an opening of the first flange portion, and is fitted to the first flange portion via a first sealing material. The joint is characterized in that it is provided at the end of each of the upper plates. According to the above means, when the upper plate is applied from the lower surface side of the second flange portion of each side plate, and the fitting portion of each upper plate is fitted to the first flange portion, the opening of the first flange portion is formed by the upper plate. The first sealing member is covered and compressed between the first flange portion and the fitting portion of the upper plate. For this reason, the end of each side plate is reliably sealed.

According to a third aspect of the present invention, at least one end of each upper plate covers the opening of the first flange, and the end of each upper plate and the upper end surface of the first flange are connected to each other. It is characterized in that the first sealing material is interposed therebetween. According to the above means, when the upper plate is applied to the second flange portion of each side plate from the lower surface side, the opening of at least one first flange portion of each side plate is covered by the end portion of the upper plate, and the first flange portion is closed. The first sealant is compressed between the upper end surface and the end of the upper plate. For this reason, the end of each side plate is reliably sealed.

According to a fourth aspect of the present invention, at least one end of each upper plate opens an opening of a first flange portion, and is fitted to the first flange portion via a first sealing material. It is characterized in that a fitting portion is provided at an end of the upper plate, and a thick portion interposed between an upper end surface of the first flange portion and the top plate is provided in the second seal material. . According to the above means, when the upper plate is applied to the second flange portion of each side plate from the lower surface side, and the fitting portion of each upper plate is fitted to the first flange portion, the first flange portion and the upper plate are fitted. The first sealing material is compressed between the first sealing member and the first sealing member. Then, when the top plate is screwed to each upper plate, the thick portion of the second sealing material is compressed between the upper end surface of the first flange portion and the top plate. For this reason, the end of each side plate is reliably sealed.

The heat insulating box according to the fifth aspect is characterized in that a positioning portion for positioning the upper plate in contact with the outer box is provided on each upper plate. According to the above means, each upper plate is positioned as the positioning portion of each upper plate comes into contact with the outer box.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment in which the present invention is applied to a heat insulating box of a refrigerator will be described below with reference to FIGS. The heat insulating box accommodates an inner box (not shown) inside the outer box 11 shown in FIG. 6, and injects a heat insulating material (not shown) such as urethane foam between the outer box 11 and the inner box. The detailed configuration of the outer box 11 is as follows.

As shown in FIG. 1, a flange 13 extending in the vertical direction is formed at the front end of the left side plate 12. As shown in FIG.
The flange portion 13 is located at a central portion excluding upper and lower ends of the left side plate 12, and is bent inward of the outer box 11. In addition, a first flange portion 14 is formed at a front end portion of the left side plate 12 at an upper end portion. The first flange portion 14 extends in the vertical direction and has an open upper end, and is folded inside the outer box 11 as shown in FIG. Further, a fitted portion 14 a is formed inside the first flange portion 14.

At the upper end of the left side plate 12, a second flange portion 15 extending in the lateral direction is formed. The second flange portion 15 is bent inward of the outer box 11,
As shown in FIG. 1, the left side plate 12 is located at a central portion excluding front and rear ends. Also, the second flange portion 1 of the left side plate 12
3, an upper left plate 16 is applied from the lower surface side, and the opening of the first flange portion 14 is closed by the front end of the upper left plate 16 as shown in FIG. The upper left plate 16
Is equivalent to the upper plate.

As shown in FIG. 2, a flange 17 projecting downward is formed at the left end of the upper left plate 16, and the flange 17 contacts the entire inner surface of the left plate 12. I have. A flange 18 projecting downward is bent at the front end of the upper left plate 16. The flange portion 18 corresponds to a fitting portion, and a sheet-like first sealing material 19 for preventing urethane leakage and moisture absorption is attached to the front end portion of the flange portion 17 and the flange portion 18.

As shown in FIG. 3, the flange portion 18 of the upper left plate 16 is press-fitted into the fitted portion 14a of the left plate 12. The first seal member 19 is provided on the first flange portion 14 of the left side plate 12 and the flange portion 18 of the upper left plate 16.
Has been compressed between. Also, at the rear end of the left side plate 12,
As shown in FIG. 1, a first flange portion 20 extending in a longitudinal direction is provided.
Are formed. The first flange portion 20 is folded twice and has an upper end opening. As shown in FIG. 5, the opening of the first flange portion 20 is closed by the rear end of the upper left plate 16. . Incidentally, reference numerals 21a and 21 in FIG.
“b” indicates a fitted portion formed on the first flange portion 20.

As shown in FIG. 5, a first sealing material 22 in the form of a sheet is adhered to the upper end surface of the first flange portion 20. The first seal member 22 prevents urethane leakage and moisture absorption, and is compressed between the upper end surface of the first flange portion 20 and the rear end of the upper left plate 16.

The right side plate 23 of FIG. 1 has the same configuration as the left side plate 12 and includes a flange portion 13 and a first flange portion 1.
4 and 20 and a second flange portion 15. As shown in FIG. 6, an upper right plate 24 is applied to the second flange portion 15 of the right side plate 23 from the lower surface side.
The upper right plate 24 has the same configuration as the upper left plate 16 and has, as shown in FIG. 1, flange portions 17 and 18 to which a first seal member 19 is adhered. The upper right plate 24 corresponds to the upper plate.

As shown in FIG. 6, the flange portion 18 of the upper right plate 24 is press-fitted into the fitting portion 14a of the first flange portion 14 of the right side plate 23, and the first sealing material 19 is 24 and between the first flange portion 14 of the right side plate 23. Also, the first of the right side plate 23
As shown in FIG. 1, the first end face of the flange 20
The sealing material 22 is attached, and the first sealing material 22
It is compressed between the upper end surface of the first flange portion 20 and the rear end of the upper right plate 24.

The upper end of the rear plate 25 has an L-shaped upper rear plate 2
6 are attached, and flange portions 27, 27 are formed at left and right ends. Then, each flange portion 27 of the rear plate 25
6 are fitted between the fitting portion 21a of the left side plate 12 and the fitting portion 21a of the right side plate 23 in FIG.
Connecting between the two.

The first flange portion 20 of the left side plate 12 and the first flange portion 20 of the right side plate 23 have flat contact portions 21.
c is bent, and each of the contact portions 21 c is formed such that each flange portion 27 of the rear plate 25 is
a and the inner surface of the rear plate 25 by being fitted into the fitted portion 21 a of the right plate 23. Note that each first sealing material 22 shown in FIG. 1 covers a contact portion between the contact portion 21c and the rear plate 25 from the upper surface side.

The upper front plate 28 has an L-shaped cross section. Flanges 29 are bent at the left and right ends of the upper front plate 28. And each of these flange parts 29,
Inner surface of first flange portion 14 of left side plate 12 and right side plate 2
3 is fitted to the inner surface of the first flange portion 14.

The front end of the upper left plate 16 and the upper right plate 24
Is integrally formed with a flange 30 at the front end. Each of these flange portions 30 is recessed downward with respect to the upper surface of the upper left plate 16 and the upper surface of the upper right plate 24, and the upper front plate 29 is mounted on both flange portions 30 as shown in FIG. The upper left plate 16 and the upper right plate 2
It is flush with 4. As shown in FIG. 1, four second sealing members 3 in a sheet shape are provided on the lower surface of the top plate 31.
2 is affixed. Each of these second seal members 32 is for preventing urethane leakage and moisture absorption, and is located around the top plate 31.

The top plate 31 includes the upper left plate 16 and the upper right plate 2
4 screwed. Then, as the upper left plate 16 and the top plate 31 and the upper right plate 24 and the top plate 31 are attracted, the upper left plate 16 comes into close contact with the lower surface of the second flange portion 15 of the left plate 12, and The right plate 24 is in close contact with the lower surface of the second flange 15 of the right plate 23. In addition, the second flange portion 15 of the left side plate 12 is pressed upward by the second flange portion 15 of the left side plate 12 via the upper left side plate 16.
5 and the top plate 31, the second sealing member 32 is compressed, and the second flange portion 15 of the right side plate 23 is pressed upward via the upper right plate 24, so that the second flange portion of the right side plate 23 is pressed. The second sealing material 32 is compressed between the top 15 and the top plate 31.

The top plate 31 is screwed to the upper rear plate 26 and the upper front plate 28 in addition to the upper left plate 16 and the upper right plate 24. And, between the upper rear plate 26 and the top plate 31,
As the upper front plate 28 and the top plate 31 are attracted, the second sealant 32 is compressed between the upper rear plate 26 and the top plate 31, and between the upper front plate 28 and the top plate 31. Reference numeral 33 denotes a screw for fixing the top plate 31. The top surface of the top plate 31 is covered with a flat table board (not shown).

According to the above embodiment, when assembling the outer case 11, the upper left plate 16 is applied to the lower surface of the second flange portion 15 of the left side plate 12, and the upper surface is attached to the lower surface of the second flange portion 15 of the right side plate 23. Apply the right plate 24. Then, the flange portion 18 of the upper left plate 16 and the flange portion 18 of the upper right plate 23 are connected to the fitting portion 14a of the left side plate 12 and the right side plate 23.
In the fitting portion 14a.

Then, between the flange portion 18 of the upper left plate 16 and the first flange portion 14 of the left plate 12, the upper right plate 23
Flange portion 18 and first flange portion 1 of right side plate 23
The first seal member 19 is compressed between the four. At the same time, between the rear end of the upper left plate 16 and the first flange portion 20 of the left plate 12, the rear end of the upper right plate 23 and the first
The first seal member 22 is compressed between the flange portions 20.

Next, when the top plate 31 is screwed to the upper left plate 16, the upper right plate 24, the upper rear plate 26, and the upper front plate 28,
The space between the upper left plate 16 and the top plate 31 and the space between the upper right plate 24 and the top plate 31 are attracted. Then, the upper left plate 16 comes into close contact with the lower surface of the second flange portion 15 of the left plate 12, and the upper right plate 23 comes into close contact with the lower surface of the second flange portion 15 of the right plate 23. At the same time, the second sealant 32 is compressed between the second flange portion 15 of the upper left plate 16 and the top plate 31 and between the second flange portion 15 of the upper right plate 23 and the top plate 31.

Therefore, the left side plate 12 is double-sealed such as the press-contact between the upper left side plate 16 and the second flange portion 15 and the second seal material 32, and the sheet-like first seal is provided at the front and rear ends. Materials 19 and 22 are mounted. Similarly, for the right side plate 23, the upper right side plate 24 and the second
Double sealing such as pressure contact between the flange portions 15 and the second sealing material 32 is performed, and sheet-like first sealing materials 19 and 22 are attached to front and rear ends. For this reason, in each part of the left side plate 12 and the right side plate 23, stable urethane leakage prevention performance and moisture absorption prevention performance are obtained.

Further, as the flange portion 18 of the upper left plate 16 and the flange portion 18 of the upper right plate 24 are fitted to the first flange portion 14 of the left side plate 12 and the first flange portion 14 of the right side plate 23, First flange portion 14 of left side plate 12
And, the first flange portion 14 of the right side plate 23 was covered, and each first seal member 19 was compressed. For this reason, the sealing performance at the front end of the left side plate 12 and the sealing performance at the front end of the right side plate 23 are improved.

Further, as the upper left plate 16 and the upper right plate 24 are applied to the second flange portion 15 of the left side plate 12 and the second flange portion 15 of the right side plate 23, the first flange portion 20 of the left side plate 12 and The first flange portion 20 of the right side plate 23 was covered, and the first sealing members 22 were compressed.
Therefore, the sealing performance at the rear end of the left side plate 12 and the sealing performance at the rear end of the right side plate 23 are improved.

In the first embodiment, the upper left plate 16 covers the opening of the first flange with an upper plate and compresses the first sealant between the first flange and the fitting portion. Although the present invention is applied to the front end of the upper right plate 24 and the front end of the upper right plate 24, the present invention is not limited thereto, and may be applied to the front and rear ends of the upper left plate 16 and the front and rear ends of the upper right plate 24, or
It may be applied to the rear end of the upper left plate 16 and the rear end of the upper right plate 24.

In the first embodiment, the upper left plate 16 is formed by covering the opening of the first flange with an upper plate and compressing the first sealing material between the first flange and the upper plate. Although applied to the rear end and the rear end of the upper right plate 24, the present invention is not limited to this, and may be applied to the front and rear ends of the upper left plate 16 and the front and rear ends of the upper right plate 24, or
The present invention may be applied to the front end of the upper left plate 16 and the front end of the upper right plate 24.

Next, a second embodiment of the present invention will be described with reference to FIGS.
It will be described based on. The same members as those in the first embodiment are denoted by the same reference numerals, and description thereof will be omitted. Hereinafter, only different members will be described. At the rear ends of the upper left plate 16 and the upper right plate 24, as shown in FIG.
4 are integrally formed (only the fitting portion 34 of the upper left plate 16 is shown). Each of these fitting portions 34 is formed by extending the flange portion 17 rearward, and protrudes from the rear end of the upper left plate 16 and the rear end of the upper right plate 24.

As shown in FIG. 9, a first sealing material 35 is attached to the fitting portion 34 of the upper left plate 16 and the fitting portion 34 of the upper right plate 24. Only the first seal member 35 attached to the portion 34 is shown). And
When each fitting portion 34 is press-fitted into the fitting portion 21b of the first flange portion 20, as shown in FIG.
Are compressed between the fitting portion 34 and the first flange portion 20. The upper left plate 16 and the upper right plate 24 open the opening of the first flange portion 20,
It is formed short.

At the rear corner of the top plate 31, there are provided overlapping portions 32a corresponding to thick portions located at left and right ends (only the overlapping portion 32a at the left end is shown). Each of these polymerization sections 3
2a is obtained by laminating the second sealing material 32,
The top plate 31 is divided into the upper left plate 16, the upper right plate 24, and the upper rear plate 2
6. When screwed to the upper front plate 28, each overlapping portion 32a is compressed between the upper end surface of the first flange portion 20 and the top plate 31.

According to the above embodiment, the upper left plate 16 is applied to the second flange portion 15 of the left side plate 12 from the lower surface side, and the upper right plate 2 is applied to the second flange portion 15 of the right side plate 23 from the lower surface side.
4 and fit the fitting portion 34 of the upper left plate 16 and the fitting portion 34 of the upper right plate 23 to the first flange portion 20 of the left side plate 12.
And when fitted to the first flange portion 20 of the right side plate 23,
The first seal material 35 is compressed between the first flange portion 20 and the fitting portion 34, respectively. Then, the top plate 31 is moved to the upper left plate 1
6, when screwed to the upper right plate 24, the upper rear plate 26, and the upper front plate 28, the overlapping portions 32a of the second seal material 32
It is compressed between the upper end surface of the flange portion 20 and the top plate 31. For this reason, the rear end of the left side plate 12 and the rear end of the right side plate 23 can be easily and reliably sealed.

In the second embodiment, the first sealing material is compressed between the first flange portion and the fitting portion, and the opening of the first flange portion is made thicker by the second sealing material. The rear end of the upper left plate 16 and the upper right plate 2
4 is applied to the rear end, but is not limited to this. The present invention is applied to the front and rear ends of the upper left plate 16 and the front and rear ends of the upper right plate 24, or the front end of the upper left plate 16 Alternatively, the present invention may be applied to the front end of the upper right plate 24.

Next, a third embodiment of the present invention will be described with reference to FIGS. The same members as those in the first embodiment are denoted by the same reference numerals, and description thereof will be omitted.
Only different members will be described. First, in FIG. 11, the flange portion 30 of the upper left plate 16 and the upper right plate 2
4 is provided with a positioning part 3 protruding forward.
0a are integrally formed (only the positioning portion 30a of the upper left plate 16 is shown).

According to the above embodiment, as shown in FIG. 10, the upper left plate 16 and the upper right plate 24 are
0a is positioned in contact with the inner surface of the upper front plate 28 (only the state where the upper left plate 16 is positioned is shown). Thereby, the rearward movement of the upper front plate 27 is restricted, and each flange portion 28 surely contacts the front flange portion 14 of the left side plate 12 and the front flange portion 14 of the right side plate 22.

In the third embodiment, the positioning portions 30a that contact the upper front plate 28 are formed on the upper left plate 16 and the upper right plate 24. However, the present invention is not limited to this. A positioning portion that comes into contact with 25 may be formed.

[0042]

As is apparent from the above description, the heat insulating box of the present invention has the following effects. According to the means of the first aspect, double sealing such as press contact between the upper plate and the second flange portion and compression of the second seal material is performed, and a sheet-like first seal material is provided at front and rear ends of each side plate. Is attached, stable urethane leakage prevention performance and moisture absorption prevention performance can be obtained in each part of each side plate.

According to the second aspect of the present invention, the opening of the first flange portion is covered with the upper plate, and the first sealing material is compressed between the first flange portion and the fitting portion. Is securely sealed. According to the third aspect, the opening of the first flange portion is covered with the upper plate, and
Since the first sealing material is compressed between the flange and the end of the upper plate, the end of each side plate is reliably sealed.

According to the fourth aspect, the first sealing material is compressed between the first flange portion and the fitting portion, and furthermore,
Since the opening of the first flange portion is covered with the thick portion of the second sealing material, the end of each side plate is securely sealed. According to the means of claim 5, each upper plate can be positioned by bringing the positioning portion of each upper plate into contact with the outer box.

[Brief description of the drawings]

FIG. 1 is a view showing a first embodiment of the present invention (an exploded perspective view of an outer box).

FIG. 2 is an exploded perspective view showing a front end of a left side plate and an upper left side plate.

FIG. 3 is a perspective view showing front end portions of a left side plate and an upper left side plate.

FIG. 4 is an exploded perspective view showing the rear ends of the left side plate and the upper left side plate.

FIG. 5 is a perspective view showing a rear end portion of a left side plate and an upper left side plate.

FIG. 6 is a perspective view showing the upper part of the outer box.

FIG. 7 is a view showing a second embodiment of the present invention (an exploded perspective view showing a rear end portion of an upper left plate and a second sealing material).

FIG. 8 is an exploded perspective view showing a rear end portion of an upper left plate and a first sealing material.

FIG. 9 is an exploded perspective view showing the rear ends of the left side plate and the upper left side plate.

FIG. 10 is a view showing a third embodiment of the present invention (a top view showing a connecting portion between a left side plate and an upper front plate).

FIG. 11 is a perspective view showing a front end of an upper left plate.

FIG. 12 is a perspective view of a ceiling portion of a heat insulating box showing a conventional example.

FIG. 13 is a sectional view showing a connection state of the left side plate and the top plate.

FIG. 14 is a perspective view showing a ceiling portion of a left side plate and a rear plate.

[Explanation of symbols]

11 is an outer box, 12 is a left side plate, 14 is a first flange portion, 1
5 is a second flange portion, 16 is an upper left plate (upper plate), 18 is a flange portion (fitting portion), 19 is a first seal material, 20 is a first flange portion, 23 is a right side plate, and 24 is an upper right portion. A plate (upper plate), 30a is a positioning portion, 31 is a top plate, 32 is a second sealing material, 34 is a fitting portion, and 35 is a first sealing material.

Claims (5)

(57) [Claims] 1. An insulating box body containing an inner box in an outer box and filling a heat insulating material between the outer box and the inner box, wherein the outer box includes a left side plate and a right side plate, A first flange portion provided at the front and rear ends of each side plate and extending vertically and having an open upper end; a second flange portion provided at an upper end portion of each side plate and extending in the horizontal direction; and <br/> top plate an assigned from the lower surface side to the second flange portion, a first sealing material sheet interposed between the front and rear end portions and said first flange portion of the upper plate, the two first 2 Placed on the upper surface of the flange,
A screw-fastened top plate, a second flange portion of each of the side plates and a sheet-shaped second seal material interposed between the top plate and compressed by a fastening force of the screw , wherein each of the upper plates is , On the lower surface of the second flange portion,
An insulated box characterized by being pressed by a fastening force . 2. An at least one end of each upper plate covers an opening of a first flange, and an end of each of the upper plates is fitted to the first flange via a first sealing material. The heat-insulating box according to claim 1, wherein a fitting portion is provided. 3. At least one end of each upper plate covers an opening of the first flange portion, and the first sealant is provided between an end portion of each front upper plate and an upper end surface of the first flange portion. The heat insulating box according to claim 1, wherein the heat insulating box is interposed. 4. An at least one end of each upper plate opens an opening of a first flange portion, and an end of each upper plate is fitted to the first flange portion via a first sealing material. The thick portion interposed between the upper end surface of the first flange portion and the top plate is provided in the second sealing material. The insulated box described. 5. The heat insulating box according to claim 1, wherein each upper plate is provided with a positioning portion for positioning the upper plate in contact with the outer box.