JPH0230711Y2 - - Google Patents

Description

[Detailed description of the invention] (a) Field of industrial application The present invention relates to an improved structure of a heat-insulating box body formed by connecting an outer box and an inner box with a frame member made of resin.

(b) Prior Art A conventional heat insulating box of this type is shown in, for example, Japanese Utility Model Application No. 52-6262. The structure shown in this publication is to construct a heat insulating box by combining an outer box and an inner box with a frame member molded from a synthetic resin material, and foaming and filling the space formed by these with a heat insulating material. , the frame member is composed of a pair of extruded frame bodies and a pair of molded frame bodies that engage with the ends of the frame bodies.

(c) Problems to be solved by the invention The conventional frame member 100 is shown in FIGS. 13 and 14.
As shown in the figure. Reference numeral 101 denotes a pair of extruded frame bodies located at the front and rear of the frame member 100 in the longitudinal direction. Reference numeral 102 denotes a pair of molded frames located on the left and right sides of the frame member 100, and a slightly high step is formed on the upper surface of the outer edge in order to form an engaging part 103 at the end for engaging the end of the frame 101. A portion 104 is formed.
The frame 1 is attached to this engaging portion 103 as shown by the arrow in FIG.
14 by inserting and engaging the ends of the frame 1 as shown in FIG.
00 is completed, but the stepped part 104 is still missing.
Since it protrudes higher than the other upper surface of the frame 100, it is not desirable in terms of design, and also has an adverse effect on the adhesion of the gasket on the inner surface of the door (not shown), so its mounting position is also restricted. Furthermore, as shown in FIG. 15, an outer box 105 and an inner box 106 are combined inside the frame 100, and a heat insulating material is filled inside to form a heat insulating box body 107.
When the inside is cooled, a deforming force is applied in the direction of the arrow in FIG. 15 due to contraction. However, since the frame 101 is long, it is susceptible to deformation in the above directions, and there is a problem that the heat insulating box 107 is deformed in the longitudinal direction and bulges outward as shown in FIG.

(d) Means for solving the problem In order to solve the problem, the present invention is designed to solve the problem by attaching the frame member 10 of the heat insulating box 2 to the first pair in the longitudinal direction.
It is composed of a frame 13 and a pair of second frames 14 that engage with the ends thereof, and a reinforcing plate 15 is provided on the inner surface of the frame member 10 in the longitudinal direction, and a reinforcing plate 15 is provided on the inner surface of the first frame 13. A groove 22 is formed to hold the second frame 1.
A stepped portion 14A is formed at the four ends, and by engaging the stepped portion 14A with the groove 22, the outer surfaces of both frames 13 and 14 are made flush.

(e) Effects According to the present invention, the outer surface of the frame member of the heat insulating box is flush, which is preferable in terms of design, and also provides good adhesion to the door sealing device, etc. Further, since there is a reinforcing plate in the longitudinal direction, deformation is prevented, and the groove for holding the reinforcing plate can be used when assembling the frame.

(F) Embodiment An embodiment of the present invention will be described with reference to FIGS. 1 to 12. FIG. 7 shows a perspective view of the top-opening freezer 1 as an example, and FIG. 8 shows a side sectional view thereof. Reference numeral 2 designates a heat insulating box body of the present invention which is long from left to right and opens upwardly, and a temperature control knob 3 and the like are provided on the front surface thereof. A heat insulating door 5 having a gasket 4 as a sealing device attached to the inner peripheral edge of the heat insulating box 2 is attached to the upper opening edge of the heat insulating box 2 so as to be openable and closable. 7 is a handle device. Furthermore, the insulating box body 2 has an outer box 8 made of a steel plate that is open at the top, an inner box 9 that is open at the top and made of an aluminum plate located at a distance inside the outer box 8, and the opening edges of both the box bodies 8,9. A heat insulating material 11 such as polyurethane foam is foam-filled in a space formed by a connecting frame member 10 made of synthetic resin, and the two are bonded together by the adhesive force. Thereby, the frame member 10 frames the opening edge of the heat insulating box 2.

The frame member 10 is composed of a pair of elongated frames 13 located in the front and back, and a pair of frames 14 located on the left and right and assembled to the ends of the frame 13. A reinforcing plate 15 made of steel plate is provided on the side. FIG. 4 shows a sectional view of the heat insulating box 2 at the frame 13 portion, FIG. 5 shows the connection portion between the frames 13 and 14, and FIG.
A sectional view of the frame 14 portion at the time of one foam filling is shown. The frame 13 is formed by extrusion molding of synthetic resin, and has outer walls 16 and 17 extending downward from the outer and inner ends of the refrigerator, respectively, and a space between the upper surface of the frame 13 and the inner surface of the outer walls 16 and 17. Inner walls 18 and 19 each extend downwardly with a space therebetween.
Grooves 20 and 21 that open downward and grooves 22 and 23 that open inward are formed, respectively. The frame body 13 has a stepped shape with a low inner side,
There is a groove 2 on the inner surface of the outer side of the compartment that is smaller than this stepped part.
A rib 25 forming a groove 24 that faces the groove 24 at a predetermined distance from the rib 25 is formed to protrude over the entire length.

Next, the frame 14 is formed by injection molding of synthetic resin, and like the frame 13, it has a stepped shape where the inside of the refrigerator is lower than the outside of the refrigerator, and extends downward from the ends of the outside and inside of the refrigerator, respectively. Outer walls 26, 27 and an inner wall 2 extending downwardly with a space therebetween.
Grooves 31 and 32 that open downward are formed by the grooves 8 and 29, respectively. In Fig. 1, both frames 13,
An exploded view showing the inner surface of 14 is shown. Frame 1
Both side portions of 4 are bent at a substantially right angle, and a step portion 14A that is depressed inward as a whole is formed at the end thereof. The outer wall 2 of this stepped portion 14A portion
6, 27 have been deleted, and inner walls 28, 29
is also moving inward. On the other hand, the reinforcing plate 15 is inserted and engaged between the grooves 22 and 24 from the end of the frame 13, but the width at both ends of the reinforcing plate 15 is narrowed a little, and the reinforcing plate 15 separates from the grooves 22 and 24 to provide heat insulation. A stepped portion 36 is formed by being bent upward in the direction toward the material 11 side and having a screw hole 35 . Such a reinforcement plate 15
After inserting and engaging between the grooves 22 and 24, the stepped portion 14A of the frame 14 is aligned with the inner surface of the frame 13, and the ends on the outside and inside of the refrigerator are aligned with the groove 22 located below the stepped portion 36. 23 from their ends to engage both frames, and the stepped portion 36 of the reinforcing plate 15 is inserted into the threaded portion 37 previously formed on the inner surface of the stepped portion 14A of the frame 14.
The screws 38 are screwed into the screw holes 35 of the frame members 13 and 14 to connect the frames 13 and 14 as shown in FIGS. 2 and 3. At this time, the outer walls 28 and 29 of the stepped portion 14A are located inside the inner walls 18 and 19 of the frame body 13, respectively.
Further, a concave groove 39 for escaping the rib 25 is formed in advance in the stepped portion 14A, and the stepped portion 14A
As shown in the figure, it is in close contact with the inner surface of the frame 13. Therefore, the heat insulating material 11 will not leak from this part. Further, the outer surfaces of the frames 13 and 14 are flush with each other as shown in FIG. This not only improves the design effect but also improves the adhesion of the gasket 4, so that it does not adversely affect its mounting position.

Groove 2 of frame member 10 assembled as above
Insert the upper opening edge of the outer box 8 into the grooves 0 and 31, and
The upper opening edge of the inner box 9 is inserted into the holes 0 and 32, and the frame member 10 is placed as the upper surface in a predetermined foaming mold, and the heat insulating material 11 is foamed. In the frame 13, the grooves 20 and 21 forming the grooves 22 and 23 do not reach the back side of the upper surface of the frame 13. On the other hand,
Since the grooves 31 and 32 of the frame body 14 reach the back side of the upper surface of the frame body 14, there is a gap between the upper edge of the outer box 8 or inner box 9 and the bottom of the groove 31 or 32. , 32, ribs 41 and 42 are formed at a predetermined interval as shown in FIG. 9 at the same height as this interval.
The inside and outside of the outer box 8 or the inner box 9 are communicated through the mutual spacing. Therefore, the insulation material 11
During foaming, the air between the frame member 10, the outer box 8, and the inner box 9 is released into the ribs 41 or 4 as shown by the arrows in FIG.
Since the air is discharged to the outside through the groove 31 or 32 at a distance of 2, there is no need to provide a special air vent hole or the like. Note that 43 is a cooling pipe of the refrigeration cycle fixed to the surface of the inner box 9 on the side of the heat insulating material 11 with aluminum tape 44 or the like.

Here, as shown in FIG. 10, a through hole 50 is bored in a suitable position of the frame 13 constituting the front horizontal side of the frame member 10, and a through hole 51 is also formed in the reinforcing plate 15 corresponding to the through hole 50. It is perforated. Furthermore, a hook cover 53 having a recess 52 is provided on the back side of the reinforcing plate 15 corresponding to the through hole 51;
The reinforcing plate 15 and the grooves 22 and 24 as shown in
inserted between and held. That is, groove 22 or 2
The width of 4 is set in advance to a length that can hold both. On the other hand, the door 5 is provided with a locking device (not shown), and its hook 54 is attached to the reinforcing plate 1 as shown in FIG.
It will engage with the through hole 51 of No.5. Therefore, no special reinforcing tool is required for engaging the hook 54, and since the hook cover 53 can be fixed using the grooves 22, 24, no special fixing structure is required.

Here, the ribs 25 of the frame 13 are connected to the outer wall 17 on the inside of the refrigerator.
Since the reinforcing plate 15 is formed to protrude to the outside of the refrigerator at a distance, the reinforcing plate 15 is further away from the inside of the refrigerator. Therefore, the reinforcing plate 15 made of a steel plate is cooled by the cold air inside the refrigerator, and condensation on the outer side of the frame 13 caused by the cool air being conducted to the outside of the refrigerator is prevented.

(g) Effects of the invention By having the above-mentioned structure of the invention, the outer surface of the frame member located at the opening edge of the heat insulating box becomes flush, which is preferable from a design point of view, and also improves the adhesion of the door sealing device. Becomes good. Further, since a reinforcing plate is installed on the first frame in the longitudinal direction, deformation due to cooling or the like can be prevented. Furthermore, since the connection between the first frame body and the second frame body is achieved using the groove for holding the reinforcing plate, no special engagement structure is required, and the structure can be simplified, which has great practical effects. It is what it is.

[Brief explanation of the drawing]

1 to 12 show an embodiment of the present invention, and FIG. 1 is an exploded perspective view showing the back side of the frame member;
Fig. 2 is a side view of the frame member, Fig. 3 is a top perspective view of the same, Fig. 4 is a sectional view of the insulating box of the front and rear frame parts, and Fig. 5 is a cross-sectional view of the front and rear frame members and the left and right frames. 6 is a sectional view of the insulation box showing the left and right frame portions when filled with insulation material, FIG. 7 is a perspective view of the freezer, and FIG. 8 is a sectional view of the same side. , FIG. 9 is a sectional view taken along the line A-A' in FIG. 6, FIG. 10 is an exploded perspective view of the hook cover, FIG. 11 is a sectional view of the insulation box, and FIG. 13 to 16 show conventional examples,
FIG. 13 is an exploded perspective view of the frame member, FIG. 14 is a perspective view thereof, FIG. 15 is a perspective view of the heat insulating box, and FIG. 16 is a perspective view of the heat insulating box after deformation. 8... Outer box, 9... Inner box, 10... Frame member, 1
1... Insulation material, 13, 14... Frame, 14A...
Paragraph portion, 15... Reinforcement plate, 22, 23', 24...
…groove.

Claims (1)

[Scope of utility model registration request] Comprising a resin molded frame member, an outer box and an inner box assembled in the frame member, a heat insulating material filled in the space formed by these, and a reinforcing plate provided in the longitudinal direction of the inner surface of the frame member, The frame member consists of a pair of first frames extending in the longitudinal direction and a pair of second frames that engage with the ends of the first frames, and the first frame has the reinforcing plate on the inner side. In addition to having a groove for holding, the second frame has an insertion portion formed in a step at an end thereof,
A heat insulating box body characterized in that the outer surfaces of both frames become flush by inserting and engaging the insertion portion into the groove end portion.