JP2547633Y2 - Inner box of 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 an inner box of an insulated box, which is composed of a plurality of plate members and a clip attached to a joint to which the plurality of plate members are connected. is there.

[0002]

2. Description of the Related Art Insulated boxes, such as refrigerators and showcases,
As is well known, it is composed of an inner box, an outer box arranged at a predetermined distance from the inner box, and a foam material filled between these boxes. Such an inner box is usually formed from a plurality of plate members. FIG. 5 is a perspective view showing a joined state in which the flat part of the inner box is formed from two plate members 50, 50. As shown in FIG.
Flanges 51, 51 are formed by bending the side portions of the inner case 50 at substantially right angles, and these flanges 51, 51 are abutted and joined by means such as rivets, spot welding, or the like to form a flat portion of the inner box. The inner box is formed of not only a plane portion but also an intersecting surface in which the surfaces intersect at a substantially right angle. The intersection plane is
Overlap the side edge of one plate with the flange formed on the side of the other plate, and likewise rivets,
It is formed by joining by means such as spot welding.

As described above, an inner box having a desired shape is formed. An outer box larger than the inner box by a predetermined size is prepared, and a foaming liquid is injected between the inner box and the outer box. The foam is formed to form a heat insulating box. By the way, when the foaming liquid is injected into the outside of the inner box having the flanges 51, 51 as described above, the foaming liquid leaks into the inside of the inner box, for example, into the refrigerator, between the flanges 51, 51. If leaked, it takes time and effort to remove the leaked foam. Also, it takes time and effort to connect the flanges 51, 51 by rivets, spot welding, or the like. To solve this problem, Japanese Utility Model Application Laid-Open No. 62-145090 proposes a fastening component that has the function of tightening the joint of the inner box as described above and that prevents leakage of the foaming liquid. As shown in FIG. 6, this fastening part is composed of a hard plastic connecting portion 52 having a horseshoe cross section, and soft plastic fins 53 provided on both sides of the connecting portion 52. I have. Therefore, the flanges 51, 51 of the plate members 50, 50 can be sandwiched by the connecting portion 52. In the sandwiched state, the tops of the flanges 51, 51 are covered with a joint 52, and the fins 53, 53
Since it is in contact with the surfaces of the plate members 50, 50, an effect is obtained that the foaming liquid does not leak into the inner box between the flanges 51, 51.

[0004] However, although the connecting portion 52 is formed of hard plastic, the fastening force of this fastening part is considered to be structurally weak. In particular, for the foaming pressure at the time of injecting and foaming the foaming liquid, the plate materials 50, 50
Seems to be unable to keep in place. 6 because the foaming pressure acts in the direction of the plates 50, 50 as indicated by the arrows in FIG.
This is because they do not act in the direction of tightening 1, 51.

On the other hand, the present applicant has proposed a holding member that prevents leakage of a foaming liquid and has a sufficient tightening force according to Japanese Utility Model Publication No. Hei 2-9351. This holding member 60
As shown in FIG. 7 (a), one plate 6
It has a first arm 63 that presses one flange 62 and a second arm 66 that presses a side edge 65 of the other plate 64.
At the distal ends of the first and second arms 63 and 66, a substantially V-shaped pressing portion is in contact with the surface of the flange portion 62 of the plate member 61 and the surface of the side edge portion 65 of the other plate member 64, respectively. 6
7, 68 are formed. Therefore, the other plate 6
The flange 6 is inserted into the through hole formed in the side edge 65 of the flange 4.
2 is inserted and aligned, and the first and second arms 63 and 66 of the holding member 60 are used to align the flange 62 of one plate 61 and the side edge 65 of the other plate 64.
Can be pressed from both sides.

[0006]

The above-mentioned holding member 60 is
And pressing portions 67 and 68.
Are convex on the surface of the flange portion 62 and the surface of the side edge portion 65, respectively, so that they are easily subjected to the foaming pressure, and the foaming pressure acts on the pressing portions 67 and 68 at right angles. That is, as shown by arrows F in FIG. 7A, an excellent effect of acting to tighten the flange portion 62 and the side edge portion 65 via the pressing portions 67 and 68 is obtained. Is obtained. Since the tightening force acts as described above, the foaming liquid is applied to the surface of the flange portion 62 of the one plate member 61 and the pressing portion 67.
And between the pressing member 68 and the surface of the side edge 65 of the other plate member 64, and does not flow into the holding member 60. Therefore, there is obtained an effect that there is no leakage to the inside of the inner box from between the flange portion 62 and the side edge portion 65 of the other plate member 63. There are, however, points to be improved. For example, as shown in (b) of FIG. 7, the inner box has a portion where the flange portions intersect,
A gap S is formed in the intersection at a structural point. More specifically, at such an intersection, the flat portion 70 of the plate material is used.
Since the flange 71 is bent at one side and the flange 72 is also bent at the other side, a gap S is generated at the ends of the flanges 71 and 72. A gap s also occurs at the butting tip of the flange portion 71. By the way, although the holding member 60 is formed to have a predetermined length, it cannot cover the intersection so as not to leak the foaming liquid. If foaming is performed in a state where it cannot be covered, the foaming liquid leaks into the inner box from the gaps S and s. Therefore, as shown in (b) of FIG. 7, foaming is applied to such an intersection, after putting putty P to seal gaps S and s.

By the way, the above-mentioned intersection is a place where the putty P is difficult to apply because it is narrow, and is also a place where unpainting tends to occur. That is, it is a place where it is difficult to completely seal even if it takes time and effort. If the seal is incomplete, the foaming liquid leaks from the imperfect portion as shown by the arrow a in FIGS. 7B and 7C, and the foaming liquid flows from the gaps S and s into the inner box. There is a risk of leaking inside. More specifically, the pressing portions 67 and 6 of the first and second arms 63 and 66 will be described.
8 is convex on the surface of the flange portion 62 and on the surface of the side edge 65, respectively, so that the foaming liquid acts on the pressing portions 67 and 68 to obtain a sealing effect. In other words, because of the V-shape, the foaming liquid in the shaded portion indicated by the arrow v in FIG. 7C flows in the shaded portion v in the longitudinal direction, and the sealing portion May leak into the inner box. The purpose of the present invention is to solve the above-mentioned problems, and specifically, a fastening force of a joint is obtained by foaming pressure, and from the intersection of the joints of the plate members forming the inner box. Another object of the present invention is to provide an inner box of a heat-insulating box in which the foaming liquid does not leak into the inner box.

[0008]

According to the present invention, in order to achieve the above-mentioned object, a foaming liquid is injected between an outer box arranged at a predetermined interval to form a heat insulating wall. An inner box of a box, wherein the inner box includes a plurality of plate members and a clip attached to a joint to which these plate members are connected, and the joint portion includes at least one plate member. The edge portion is constituted by a flange portion bent at a substantially right angle, and the joining portion is provided with a positioning means, and the clip includes a first arm plate portion pressing one surface of the joining portion, A second arm plate portion for pressing the other surface, and a substantially V-shaped pressing portion that is in direct contact with the joint portion is formed on each of the arm plate portions, and a tip portion of the pressing portion is formed of the flange portion. Is formed so as to come into contact with the surface of the plate member on which is formed.

[0009]

The joining portions of the plate members are overlapped and positioned by the positioning means. Then push in the clip. Then,
The pressing portions of the first and second arm plate portions come into contact with the joining portions of the plate members, thereby forming an inner box. The inner box formed as above
It is arranged inside the outer box so as to be at a predetermined distance from the outer box. Then, a foaming liquid is injected and foamed by a conventionally known method. At this time, since the pressing portion is formed in a substantially V shape, it is easy to receive a foaming pressure, and since the direction of the foaming pressure is perpendicular to the joint, the joint is strongly tightened. Therefore, the foaming liquid does not flow from the pressing portion to the inside of the clip and leaks into the inner box. In addition, since the tip of the arm plate portion is in contact with the surface of the plate material on which the flange portion is formed, the pressing portion is formed in a substantially V-shape, but the foaming liquid enters the shaded portion of the V-shape. Nothing to do.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention can be implemented in various forms. For example, the positioning means is composed of a projection and a through hole in the illustrated embodiment, but may be implemented by simple irregularities that fit into each other. Further, the tip of the clip may be formed of a flexible synthetic resin to enhance the adhesion to the plate material. Further, in order to enhance the adhesiveness, the leading end portion in contact with the plate material can be formed thin. In the present invention, a plurality of plate members are applied, and these plate members are connected at a joint portion to form a plane or an intersecting surface. A clip is attached to the joint, and the drawing separately shows a clip attached to the joint for forming a crossed surface and a clip attached to the joint for forming a plane. Have been. However, a clip attached to a joint for forming a plane can also be used as a clip attached to a joint for forming an intersecting surface.

An embodiment of the present invention will be described below. FIG.
FIG. 1 is a diagram showing a first embodiment of the present invention, in which (a) is a perspective view showing a cross section of a part of the inner box 1, in which only the rear plate 2 and the top plate 3 are shown. It is shown and other parts are omitted. The upper portion of the rear plate 2 is bent outward at a substantially right angle to form a flange portion 6. The flange 6 and the side edge 7 of the top plate 3 form a joint 8. As shown in FIG. 1B, protrusions 10, 10,... Protruding upward are formed on the flange portion 6 at predetermined intervals. Also, the side edges 7 have the same pitch as the projections 10, 10,.
The through holes 11, 11,... Having a larger diameter than 0, 10,. Therefore, when the flange portion 6 of the rear plate 2 and the side edge portion 7 of the top plate 3 are overlapped with each other, the projections 10, 10, ... fit into the through holes 11, 11, ..., as shown in the figure.
The rear plate 2 and the top plate 3 are positioned substantially at right angles.

As described above, the clip 12 is attached to the joint 8 where the rear plate 2 and the top plate 3 are positioned, as shown in FIG. The clip 12 has a length that can cover the entire length of the joint portion 8 and (c) in FIG.
As shown in (d), a first arm plate portion 13 that presses the side edge 7 on the top plate 3 side, a second arm plate portion 14 that presses the flange 6 of the rear plate 2, It is formed in a substantially U-shape when viewed from the side from the connecting plate portion 15 connecting the two arm plate portions 13 and 14. The first arm plate portion 13 extends substantially horizontally from the connecting plate portion 15, and has a V-shaped pressing portion 16 formed near the distal end thereof. Since the V-shaped pressing portion 16 is formed so as to extend horizontally, the angle of the pressing portion 16 can be made small, and the pressing portion 16 can be formed through the through holes 11 and 1.
.. Or the projections 10, 10,. The second arm plate portion 14 extends in a direction approaching the first arm plate portion 13 from the connecting plate portion 15, and a substantially V-shaped pressing portion 17 is similarly formed near the distal end portion thereof. And the second
The distal end portion 18 of the arm plate portion 14 is attached to the rear plate 2 at the mounted position.
Is in contact with

The relationship between the width W of the flange 6 of the rear plate 2 and the length L of the second arm plate portion 14 will be described in more detail with reference to FIG. As described above, through holes 11, 11,... Are formed in the side edge portion 7 of the top plate 3, and protrusions 10, 10,. 1
The top plate 3 and the rear plate 2 are positioned using the projections 10, 10,... And the clips 12 are attached.
If there is no play in fitting the through holes 11, 11,... And the projections 10, 10,..., As shown in (a) of FIG. Side edge 7 of
The end 18 of the second arm plate 14 comes into contact with the rear plate 2 so that an ideal mounting is achieved. In this case, the length L of the second arm plate portion 14 may be equal to the width W of the flange 6.

However, the through holes 11, 11,... And the projections 10, 10,... Are formed so that there is play in the fitting, and the clip 12 is attached to the joint 8 in the direction indicated by the arrow x. Since it is pushed in, the rear plate 2 also moves in the arrow x direction. That is, when pushing in the clip 12,
Since the pressing portions 16 and 17 of the first and second arm plate portions 13 and 14 are pressed in a state where they are in contact with the side edge portion 7 and the flange portion 6, respectively, the rear plate 2 and the top plate 3 are both arrow x. Pushed in the direction. By the way, as is clear from the structure shown in FIG. 2A, the top plate 3 does not move and the rear plate 2 moves in the arrow x direction. As a result, as shown in FIG. 2C, the left ends of the projections 10, 10,.
11, ... will be received at the left end. In this case, if the length L of the second arm plate portion 14 is formed to be equal to the width W of the flange portion 6, the distal end portion 18 of the second arm plate portion 14 will not reach the rear plate 2. Therefore, in the present embodiment, the length L of the second arm plate portion 14 is added to the width W of the flange portion 6 by a difference h between the diameters of the through holes 11, 11,... And the protrusions 10, 10,. .

Pressing portion 1 of first arm plate portion 13 of clip 12
6 or through holes 11, 11,... Or protrusions 10, 10,.
, Or projection 1
Engagement with the upper end portions of 0, 10,... Advantageously prevents the clip 12 from coming off. Therefore, the pressing portion 16 of the first arm plate portion 13 has the through holes 11, 11,.
10, ... are formed at positions where they are engaged with the upper end portions.

In FIG. 2E, through holes 11, 11,... Are formed in the flange portion 6 of the rear plate 2, and the downwardly projecting protrusions 10, 10,. Is shown in the embodiment. Also in this embodiment, when the clip 12 is pushed in,
The rear plate 2 moves, and the left ends of the through holes 11, 11,... Abut the left ends of the protrusions 10, 10,.
Are relative to each other, so that the length L of the second arm plate portion 14 is formed to the same length as in the above-described embodiment, and the pressing portion of the first arm plate portion 13 is formed. 16 is also provided at the same position.

Next, the operation of the above embodiment will be described.
As shown in FIGS. 1A and 1B, the flange 6 of the rear plate 2 and the side edge 7 of the top plate 3 are aligned,
Are fitted into the through holes 11, 11,..., And the rear plate 2 and the top plate 3 are positioned. Then, the clip 12 is pushed into the joint portion 8 including the flange portion 6 and the side edge portion 7. Then, the pressing portion 16 of the first arm plate portion 13 is provided with the protrusions 10, 10,
, And the front end portion 18 of the second arm plate portion 14 contacts the surface of the rear plate 2. The inner box 1 is appropriately formed as described above.
Then, although not shown in the drawing, they are arranged inside the outer box so as to have a predetermined interval. Next, a foaming liquid is injected and foamed by a conventionally known method.

According to the present embodiment, since the pressing portions 16 and 17 are formed in a substantially V-shape, they are easily subjected to the foaming pressure, and the direction of the foaming pressure is perpendicular to the joining portion 8.
Is strongly tightened. Therefore, the foaming liquid does not flow from the pressing portions 16 and 17 into the clip 12 and leak into the inner box 1. Further, since the distal end portion 18 of the second arm plate portion 14 is in contact with the surface of the rear plate 2, the pressing portion 17
Is formed in a substantially V-shape, but the foaming liquid does not penetrate into a portion shaded by the V-shape. Therefore, the leakage of the foaming liquid as described with reference to FIG. Since there is no leakage of the foaming liquid, the inside of the inner box can be easily cleaned and finished.

Next, a second embodiment of the present invention will be described with reference to FIGS. According to the present embodiment, both ends of the two plate materials 20, 20 to be joined are both bent at substantially right angles to form flange portions 22, 22, and these flange portions 22, 2 are formed.
2 is a joint 23. Are formed in one of the flange portions 22, and projections 25, 25,... Are formed in the other flange portion 22 at the same intervals as the through holes 24, 24,. I have. Therefore, the flange portions 22 are brought into contact with each other to form the through holes 24, 24,.
When the projections 25, 25,. Since the clip 12 'according to the present embodiment is formed in the same manner as the clip 12 described above, the same reference numerals are given to the same members, and the description will not be repeated. According to the present embodiment, the first arm plate portion 13 is also formed to have the same length as the second arm plate portion 14, and the distal end portion 18 ′ is in contact with the plate member 20.

According to the present embodiment, when the clip 12 'is pushed in, the plate members 20, 20 move together. Then, the clip 12 'is pushed in after the displacement preventing member 30 is applied to the plate members 20, 20. Therefore, the first and second arm plate portions 1 are not displaced in the pressing direction of the plate members 20 and 20.
3 and 14 are formed longer by the manufacturing error of the width W of the flange portions 22 and 22. Also, the distance from the connecting plate portion 15 to the pressing portion 16 is set to be longer by the manufacturing error of the width W of the flanges 22,22. Since the plate members 20 and 20 have the same shape, the through holes 24 and
, And a projection 25 on one of the flange portions 22.
It is apparent that the positioning can be performed in the same manner even if 25,... Are formed. It is also apparent that this embodiment can provide the same effects as those of the above-described embodiment.

[0021]

As described above, according to the present invention, the joint portion of the plurality of plate members is constituted by the flange portion in which the edge portion of at least one of the plate members is bent at a substantially right angle. Is provided with positioning means,
Positioning can be easily performed using the positioning means of the joint portion. The clip attached to the joint includes a first arm plate that presses one surface of the joint, and a second arm plate that presses the other surface. Since the substantially V-shaped pressing portion that is in direct contact with the joint is formed, the fastening force of the joint is obtained by the foaming pressure. In addition, since the tip of the arm plate portion is in contact with the surface of the plate material on which the flange portion is formed, even at the intersection of the joining portions of the plate materials forming the inner box, the foaming liquid is kept inside the inner box. There is an effect unique to the present invention that no leakage occurs. Since the foaming liquid does not leak, it is easy to clean the inside of the inner box after foaming, and the internal finish is also improved.

[Brief description of the drawings]

FIG. 1 is a diagram showing a first embodiment of the present invention;
Is a perspective view showing a cross section of a part of the inner box 1, (b) is a side view showing a state where a clip is mounted, (c) is a side view of the clip, and (d) is a perspective view of the clip.

FIGS. 2A and 2B are views for explaining a length of a second arm plate portion of the clip, wherein FIG. 2A is a side view showing a state in which the clip is attached to a joint portion of the plate material, and FIG. , (C)
Is a cross-sectional view showing only the vicinity of the joint of the plate, (d) is a side view showing a state where the clip is attached to the joint of the plate,
(E) is a cross-sectional view showing only the vicinity of the joint of the plate material in which the through hole and the projection are formed in reverse.

FIG. 3 is a perspective view showing a second embodiment of the present invention with a clip removed.

FIG. 4 is a cross-sectional view showing a state where a clip is attached to the joint shown in FIG. 3;

FIG. 5 is a perspective view showing a part of a conventional inner box.

FIG. 6 is a perspective view showing a conventional fastening component.

7A and 7B are views showing a conventional inner box and its operation, in which FIG. 7A is a cross-sectional view showing a part of the inner box, FIG. 7B is a perspective view showing a state in which joints intersect, (C) is a sectional view showing the operation.

[Explanation of symbols]

1 inner box 2, 3 board
6 Flange part 8 Joint part 10 Projection
DESCRIPTION OF SYMBOLS 11 Through hole 12, 12 'Clip 13 1st arm plate part 14 2nd arm plate part 16, 17 Pressing part 18, 18' Tip part

Claims (1)

(57) [Scope of request for utility model registration] 1. An inner box of an insulating box body in which a foaming liquid is injected to form an insulating wall between the outer box and an outer box arranged at a predetermined interval, the inner box comprising a plurality of inner boxes. And a clip attached to a joint to which these plate members are connected, wherein the joint portion is constituted by a flange portion in which an edge portion of at least one of the plate members is bent at substantially a right angle. A positioning means is provided at the joint, and the clip presses a first surface of the joint at one surface.
An arm plate portion; and a second arm plate portion for pressing the other surface. The arm plate portion has a substantially V-shaped pressing portion that is in direct contact with the joining portion, and has a distal end portion. Is an inner box of a heat insulating box, wherein said inner box is in contact with a surface of a plate material on which said flange portion is formed.