JPH0814731A - Pin device for built-up heat insulation box - Google Patents

Abstract

PURPOSE:To provide a pin device for a built-up heat insulation box which can be used for both the box formed of heat insulation panels having different thicknesses and a normal heat insulation box formed of heat insulation panels having the same thickness and gas bleeding is excellent in the case of foaming the heat insulator when the normal heat insulation box is used. CONSTITUTION:A pin device P for a built-up heat insulation box comprises a synthetic resin pin support case 51 formed at one surface with a hook inserting opening. A first pin 67 for coupling a heat insulation panel adjacent when the adjacent panels are placed on a floor panel in the same height is fixed to the case, and further a gas bleeding hole 69 is so formed as to insert a second pin for coupling the adjacent panels when the adjacent panels are placed on the floor panels of different heights.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pin device for an assembled heat-insulating box for connecting heat-insulating panels constituting an assembled heat-insulating box such as a prefabricated refrigerator / freezer.

[0002]

2. Description of the Related Art A pin device for an assembled heat-insulating box body of this type is disclosed, for example, in Japanese Examined Patent Publication No. 6-27612 (F25D2).
3/06) and is used for the prefabricated refrigerator-freezer 01 shown in FIG. The prefabricated refrigerator-freezer 01, which is the assembled heat-insulating box, has a refrigerating compartment 02 as a storage compartment on the left side and a freezing compartment 03 as a storage compartment at a temperature lower than that of the refrigerating compartment 02 on the right side. This refrigerating room 02
Is formed by connecting a plurality of 50 mm thick heat insulating panels 06, and the freezer compartment 03 is formed by connecting a plurality of 100 mm thick heat insulating panels 07, which are thicker than the heat insulating panels 06. .

In the lower part of the refrigerating compartment 02, a heat-insulating floor panel 09 having a thickness of 50 mm is laid on a skid 08 which is a floor plate, while in the lower part of the freezing compartment 03, a skid 010 is installed.
A 100 mm-thick floor panel 011 thicker than the floor panel 09 is laid on top. In this way, in consideration of the difference between the internal temperature of the refrigerating compartment 02 and the internal temperature of the freezing compartment 03, the heat insulating panel 07 and the floor panel 01 of the freezing compartment 03.
1 is thicker than the refrigerator compartment 02.

Further, openings are formed in the front surfaces of the refrigerating room 02 and the freezing room 03 of the prefabricated refrigerator / freezer 01, and doors 013 and 014 for operators are provided in the openings so as to be freely opened and closed.

In the prefabricated refrigerator-freezer 01, two or more storage chambers having different temperatures as described above are formed by heat insulating panels having different thicknesses, and a plurality of or one storage chambers have the same thickness. Some are configured with.

FIG. 12 shows a hook device F and a pin device P employed in a prefabricated refrigerator-freezer 01 which is composed of heat insulating panels of the same thickness which are commonly used. A hook 020 is rotatably provided in the hook device F, and one pin 023 is fixed to a pin support case 022 made of synthetic resin in the pin device P. Further, there is also a case where the pin support case is formed by abutting a pair of sheet metal-worked iron plates.

On the other hand, in the prefabricated refrigerator-freezer 01 constituted by heat-insulating panels having different thicknesses, as shown in FIG. 11, when the heat-insulating panels 06 of the refrigerating compartment 02 and the heat-insulating panels 07 of the freezing compartment 03 are connected to each other. Insulation panel 0
As in the case where the floor panels 09 and 011 on which the floors 6 and 07 are mounted have the same height, and when the heat insulating panel 06 of the refrigerating compartment 02 and the heat insulating panel 07 of the freezer compartment 03 are connected, the heat insulating panel 06 and Floor panel 09,01 on which 07 is placed
There are two cases where the heights of 1 are different from each other.

Therefore, it is possible to change the relative height between the hook device F and the pin device P according to the height of the floor panels 09 and 011. Since it is necessary to manufacture different heat insulation panels, manufacturing control and inventory control become difficult.

Therefore, the pin device P as shown in FIGS. 13 and 14 is adopted. This pin device P
The pin support case 026 is formed by sheet metal processing into a box shape whose surface facing the hook device F is open, and two pins 028 and 029 are fixed to the pin support case 026 by caulking. Also, this pin support case 02
The L-shaped fittings 031 and 032 are spot-welded to the upper and lower parts of 6, and the fittings 031 and 032 are screwed to the PVC frame 034 of the heat insulating panel.

When the heat insulation panel 041 and the heat insulation panel 042 are connected by the pin device P and the hook device F, the heat insulation panel 041 provided with the hook device F and the pin device P are provided in FIG. Heat insulation panel 0
The hooks 020 engage with the upper first pin 028 when they are mounted on a floor panel having the same height.
On the other hand, when the heat insulation panel 041 and the heat insulation panel 042 are placed on floor panels of different heights, the hook 0
20 engages with the lower second pin 029. With this configuration, when manufacturing the heat insulating panel, it is possible to manufacture the heat insulating panel in which the mounting positions of the pin device P and the hook device F are the same without changing the relative heights of the pin device P and the hook device F. It will be possible.

[0011]

Therefore, in the prior art,
A pin device P to which a single pin 023 shown in FIG. 12 is fixed and a prefabricated refrigerator-freezer 01 which is composed of heat-insulating panels having different thicknesses shown in FIG. There are two types, one with pins 028 and 029 fixed, and these two types were prepared and used properly. Providing two types of pin devices P in this manner requires time and effort for production and management of parts. Therefore, in order to obtain one type of pin device P, the pin device P shown in FIG. 13 with two pins fixed is also used in a prefabricated refrigerator / freezer that is commonly used and is composed of heat insulating panels of the same thickness. However, since the pin device P shown in FIG. 13 is made of sheet metal and has a simple box shape, it has low strength against pressure when a heat insulating material such as urethane foams, and There was a drawback that the degassing during foaming of the heat insulating material was not so good.

The present invention is intended to solve the above problems, and is a heat insulating box body composed of heat insulating panels having different thicknesses, and a normal heat insulating box composed of heat insulating panels having the same thickness. An object of the present invention is to provide a pin device for an assembled heat insulating box which can be used both as a body and which has good degassing when the heat insulating material foams when used in a normal heat insulating box.

[0013]

In order to achieve the above object, a pin device (P) for an assembled heat-insulating box body of the present invention is a synthetic resin pin support having a hook intrusion opening (53) formed on one surface. The pin support case includes a case (51) and an adjacent heat insulating panel (97, 99) when the adjacent heat insulating panel (97, 99) is placed on the floor panel (98, 100) having the same height. A first pin (67) for connecting is fixed and further a second pin (102) for connecting with an adjacent insulating panel when the adjacent insulating panel is placed on a floor panel of different height. Is formed with a gas vent hole (69).

The heat insulation panels connected to each other by the pin device P constitute a hollow panel by a pair of face materials (91) facing each other with a space therebetween, and a peripheral portion of the hollow panel is formed. After the pin device or the hook device (F) is arranged in the gap, the heat insulating material (93) is injected and foamed in the inner space of the hollow panel.

Further, the inner diameter of the gas vent hole may be smaller than the outer diameter of the first pin, and the second pin may be a wood screw.

[0016]

[Operation] When the insulation box is composed of insulation panels of the same thickness, the insulation panel is manufactured without inserting the second pin into the gas vent hole of the pin device. The gas generated during the foaming is discharged to the outside through the gas vent hole. On the other hand, when the heat insulation box is composed of heat insulation panels with different thickness, the second pin is inserted into the gas vent hole of the pin device to manufacture the heat insulation panel, and the adjacent heat insulation panels have different height floors. By engaging the hook of the hook device with the second pin even when it is placed on the panel, it is possible to connect the adjacent heat insulating panels.

[0017]

[Examples] Next, an example of an assembled heat insulating box pin device according to the present invention will be described with reference to FIGS. FIG. 1 is a partially cutaway front view of an embodiment of a pin device and a hook device for an assembled heat insulating box according to the present invention. FIG. 2 is a diagram for explaining a state before assembling the pin device, in which (a) is a plan view and (b) is a front view. FIG. 3 is an explanatory view of the pin device and the opening for the pin device,
(A) is a figure of an opening of a vinyl chloride frame, (b) is a side view of a pin device, (c) is a front view of a pin device, (d) is a top view of a pin device. 4 is a sectional view of the pin device, (a) is a sectional view taken along the line AA of FIG. 3 (c), and (b) is a sectional view of FIG. 3 (c).
It is a -B sectional view.

FIG. 5 is a view showing a state in which a seal is attached to the pin device P, (a) is a plan view and (b) is a front view.
FIG. 6 is a front view of the pin device connected to the PVC frame,
(A) is an overall view and (b) is an enlarged view of a main part. FIG. 7 is a view for explaining a method of connecting the pin device and the PVC frame,
(A) is a perspective view before joining, and (b) is a perspective view of a main part immediately before joining. FIG. 8 is a plan sectional view of FIG. FIG. 9 is a partially cutaway front view of a prefabricated refrigerator / freezer having heat insulating panels of different thicknesses. FIG. 10 is a front view of the pin device and the hook device in FIG.

The hook storage case 1 of the hook device F shown in FIG. 1 is integrally formed of a synthetic resin material such as ABS resin having elasticity. Before assembly, the hook storage case 1 is composed of a pair of rectangular support plates 2 and 3 and a flexible connecting portion 5 that connects one end of the support plates 2 and 3 as shown in FIG. . The connecting portion 5 has an elongated strip shape and continuously connects one side of the support plates 2 and 3 over the entire length of the side. Wall surfaces 6 perpendicular to the support plate 2 are formed on the upper and lower parts of the left end portion of the left support plate 2, respectively. Locking holes 7 and 8 which are locking portions are formed on the wall surface 6 so as to project outward (to the left in the drawing). On the other hand, engaging claws 10 and 11 that are engaging portions are provided on the upper and lower portions of the right end portion of the right support plate 3.
Are respectively formed. Further, the support plate 2 has a bearing hole 1
3, the bearing recess 14 is formed in the support plate 3, and the reinforcing rib 15 is provided around the bearing recess 14.

At the upper and lower ends of the support plate 2, two elongated vertical plates 16 are formed along the ends. A pair of rather short ridges 18 are formed between the vertical plates 16. Similarly, the vertical plate 19 is provided on the upper and lower ends of the support plate 3.
Are formed in three sheets. In addition, the engaging claws 10 and 1
1 is formed integrally with the innermost vertical plate 19. Further, on the support plate 3, a storage stopper 21 and a pop-out prevention stopper 23 are formed so as to project.
The pop-out prevention stopper 23 is integrally formed with the innermost vertical plate 19 in a coupled state to reinforce each other.

The hook storage case 1 is bent with the connecting portion 5 as a fold so that the support plate 2 and the support plate 3 are opposed to each other, and the pair of engaging claws 10 and 11 are engaged with the locking holes 7 and 8. To be used. The hook opening 2 is provided between the wall surfaces 6 of the support plate 2 at the end of the hook storage case 1 facing the connecting portion 5.
5 (see FIG. 1) are formed. A screw hole 27 is formed on the upper wall surface 6, and a screw hole 27 and a positioning projection 28 are formed on the lower wall surface 6.

The hook device F is incorporated in a heat insulating prefabricated panel, and the hook storing case 1 is bent so that a heat insulating material such as urethane (synthetic resin material) does not enter the inside of the hook storing case 1 when the heat insulating prefabricated panel is manufactured. In the opened state, the vertical plates 16 and 19 overlap each other with a small gap. This vertical plate 16,1
The opening 25 for hooks and the screw hole 27
Is degassed.

In FIG. 1, the rotor 3 of the hook device F is shown.
Reference numeral 1 denotes a hexagonal hole into which the eccentric shaft 33 is rotatably supported by the bearing hole 13 and the bearing recess 14, and the handle lever is detachably inserted. 34 is formed. Further, an engaging portion 38 is formed on the outer peripheral portion of the rotor 31 so as to project outward.

The hook member 41 of the hook device F is made of metal such as iron, and is rotatably supported by the body of the rotor 31 having a circular cross section. Further, a pulling side stopper 43 and a loosening side stopper 44, which come into contact with the engaging portion 38, are provided on the surface of the hook member 41 so as to project therefrom.

The rotor 31 and the hook member 41 are attached to the hook storage case 1 in the opened state in advance, and then the connecting portion 5 is bent as a fold to engage the engaging claws 10, 1.
The hook device F is manufactured by engaging 1 with the locking holes 7 and 8. Since the locking holes 7 and 8 project to the outside as described above, the hook device F has a protruding portion.
The protruding portion of the hook device F is inserted into the square hole of the vinyl chloride frame 46 (synthetic resin frame) by an automatic insertion device such as a robot. Then, the locking holes 7 protruding from the square holes which are the fixing holes,
The tip end of 8 is melted and crushed by the heater, and the hook device F is attached to the vinyl chloride frame 46.

In FIGS. 3 and 4, the pin support case 51 of the pin device P is integrally molded of synthetic resin, and a groove 52 is formed therein as shown in FIG.
The left end of the hook has an elongated opening 53 for entering a hook (Fig. 3 (b)).
(See) and open to the outside. Further, the flange 5 is provided on each of the left end surface and the right end surface of the pin support case 51.
5 and 56 are formed, and further, a total of four ribs 58 arranged horizontally are formed on the front surface and the back surface. Screw holes 61 are formed at the upper end and the lower end of the left flange 55. Below the upper screw hole 61, a gas vent cylinder 62 is horizontally formed perpendicularly to the flanges 55 and 56, and a left end thereof projects from the flange 55 to form a protrusion 63. Bulging portion 64 formed at the position A-A
A circular hole 65 for a pin is formed in the pin, a first pin 67 made of metal is press-fitted, and both ends thereof are caulked and fixed. Further, the bulging portion 68 formed at the position B-B has a circular gas vent hole 6 having an opening cross section smaller than that of the hole 65.
9 is formed. Further downward, a protrusion 7 having a circular cross section
1 is formed so as to project from the flange 55.

In FIG. 1, the pin support case 51 has a PVC frame 7 with the flange 55 as a contact surface.
It is in contact with 6. As shown in FIG. 3 (a), the vinyl chloride frame 76 has a mounting hole 81 at a position corresponding to the screw hole 61 of the pin support case 51, and a circular first engaging member at a position of the protrusion 63. The stop hole 82 is the opening 53 for entering the hook.
An elongated hook opening 83 is formed at the position of, and a second locking hole 84 is formed at the position of the protrusion 71.

On the other hand, in FIG. 5, the pin support case 51
A sealing material 86 (shown by hatching in the figure) for preventing the heat insulating material from entering is attached so as to cover the hook entry opening 53 (see FIG. 3B) and the gas vent hole 69. In the figure, the thickness of the sealing material 86 is shown thicker than it actually is for the sake of clarity. The sealing material 86 is omitted in other drawings.

In FIG. 7, the pin support case 51 on which the sealing material 86 is stretched has a protruding portion 63 and a protruding portion 71.
Are fitted into the first locking hole 82 and the second locking hole 84 of the PVC frame 76, respectively, and as shown in FIG.
3 and the tips of the protrusions 71 project outward from the surface of the vinyl chloride frame 76. This attachment work is performed by an automatic device such as a robot. Then, the bifurcated heater H shown in FIG.
Thus, the pin support case 51 is attached to the vinyl chloride frame 76 by melting and crushing the tips of the projecting portion 63 and the projecting portion 71 and enlarging it as shown in FIG. 6B.
Even if the pin support case 51 is mounted in the opposite direction, the first locking hole 82 and the protruding portion 63 are different in size from the mounting hole 81 and the protruding portion 71, and therefore the mounting is impossible. is there.

When the pin device P is attached to the PVC frame 76, the flange 55 on the abutting side of the pin support case 51.
Since it is in surface contact with the surface of the vinyl chloride frame 76, not in point contact, the strength can be improved.

As described above, the vinyl chloride frame 76 has the mounting holes 81 formed at the positions corresponding to the screw holes 61 of the pin support case 51. When the connection with the vinyl chloride frame 76 due to the melted portion is broken due to the above reasons, it can be fixed again with screws.

In this way, the hook device F is attached to the PVC frame 46.
In addition, when the one in which the pin device P is attached to the vinyl chloride frame 76 can be prepared, a rectangular face material 9 such as a stainless plate or a steel plate can be prepared.
1 (see FIG. 8) are opposed to each other with a space therebetween to form a hollow panel, and the vinyl chloride frame 4 to which the hook device F or the pin device P is attached is provided between the sides of the hollow panel.
6 and 76 are closed, and a heat insulating material 93 such as urethane is injected into the inner space and foamed to manufacture a heat insulating panel. The degassing of the pin device P is performed from the degassing cylinder 62 and the degassing hole 69.

Next, the operation of the prefabricated panel hook device having the above construction will be described. In FIG.
When the handle lever is inserted into the hole 34 of the eccentric shaft 33 of the rotor 31 and the rotor 31 is rotated clockwise or counterclockwise, the hook member 4 is rotated as in the conventional hook device.
1 can be rotated between the illustrated protruding position and the storage position where the hook member 41 abuts on the storage stopper 21 of the hook storage case 1. When the heat insulation panel provided with the hook device F and the heat insulation panel provided with the pin device P are placed on the heat insulation floor panel having the same height, the hook member 41 is engaged with the first pin 67. Insulation panels can be joined together by joining. The gap between the heat insulating panels is closed by the packing 94 (see FIG. 8).

By the way, FIG. 9 shows a case where the heat insulation panel provided with the hook device F and the heat insulation panel provided with the pin device P are mounted on the heat insulation floor panel of different heights. In this figure, the skid 96 is the foundation 9
It is laid on 5. The 50 mm thick heat insulating panel 97 provided with the hook device F is placed on the 50 mm thick heat insulating floor panel 98 provided on the skid 96. On the other hand, the 100 mm thick heat insulating panel 99 provided with the pin device P is placed on the 100 mm thick heat insulating floor panel 100 similarly provided on the skid 96.
Therefore, a difference of 50 mm occurs between the lower end of the heat insulating panel 97 and the lower end of the heat insulating panel 99, and the relative position of the hook device F and the pin device P is 50 mm different from the case shown in FIG.
Be in a different position.

In the case as shown in FIG. 9, when the heat insulating panel 99 provided with the pin device P is manufactured, the wood screw 102 as the second pin is previously provided in the gas vent hole 69.
After fixing by screwing, etc., heat insulating material is injected and foamed in the hollow panel. Although the work of inserting and fixing the first pin 67 into the hole 65 is performed in the manufacturing process of the pin device P,
The step of inserting the wood screw 102 into the gas vent hole 69 is performed in the step of manufacturing a heat insulating panel.

The heat insulation panel 97 and the heat insulation panel 99
The connection is made by engaging the hook member 41 of the hook device F with the wood screw 102 of the pin device P. Therefore, the gas vent hole 69 is formed in the heat insulation floor panel 9
8 is arranged below the first pin 67 by a distance substantially equal to the difference in thickness between the heat insulating floor panel 100 and the heat insulating floor panel 100. Also, FIG.
0, the flange 55 that is the contact surface with the vinyl chloride frame 76.
The distance between the surface of the flange 55 and the vent hole 69 is substantially equal to the distance between the surface of the flange 55 and the first pin 67.
In other words, the distance between the center of the first pin 67 and the center of the vent hole 69 is set to be approximately equal to the difference in the thickness of the heat insulation floor panel, while the center of the first pin 67 and the center of the vent hole 69 are set. The line connecting the and is set substantially parallel to the contact surface of the pin device P that contacts the PVC frame 76, that is, the facing surface that faces the hook device F.

The first pin 67 may or may not be used when connecting the heat insulation panels.
It is attached and fixed to all pin devices P regardless of whether they are used or not. On the other hand, the wood screw 102 does not need to be inserted into the gas vent hole 69 in the case of a prefabricated refrigerator-freezer which is usually used and is composed of an insulating panel of the same thickness.

In the embodiment, the pin support case 51 has flanges 55 and 56 and ribs 58 as strength members.
(In particular, the flange 55 and the rib 58) are integrally formed of synthetic resin, and the pin support case 51 has considerable strength. As a result, it is possible to maintain the strength against the pressure when the heat insulating material such as urethane foams without inserting and fixing the pin, which is both the engaging member with the hook and the reinforcing member, into the gas vent hole 69. it can.

On the other hand, the conventional sheet metal working pin device P shown in FIG. 13 is originally of a simple box shape, and therefore has a low strength against the pressure when the heat insulating material such as urethane foams. In addition, if the pin that serves as the strength member is removed, the strength further decreases, and it may be crushed when the heat insulating material is foamed. As a result, it is impossible to remove the second pin 029 shown in FIG. Further, it is conceivable to attach a reinforcing member in order to increase the strength, but if the reinforcing member is spot-welded and attached to a sheet metal working product, the number of parts and the number of manufacturing steps considerably increase and the cost rises.

The wood screw 102 is commercially available at a low cost, and the cost can be reduced. Further, since the inner diameter of the gas vent hole 69 is made smaller than the outer diameter of the first pin 67, the strength of the pin support case 51 can be secured despite the gas vent hole 69 being formed, and the gas vent hole 69 can be secured. 6
Even if 9 is small, gas can be satisfactorily degassed when the heat insulating material is foamed.

Further, since the pin support case 51 is made of synthetic resin, the projection 63 and the projection 71, which are the engaging projections for attaching to the PVC frame 76, are formed at the same time when the pin support case 51 is molded. be able to.

Although the embodiments of the present invention have been described in detail above, the present invention is not limited to the above embodiments, and various modifications can be made within the scope of the gist of the present invention described in the claims. It is possible to make changes. A modified embodiment of the present invention is illustrated below. (1) In the embodiment, the heat insulating panel has two types of thickness, but three or more types are possible. In the case of three types, there are two gas vent holes into which pins can be inserted.

(2) In the embodiment, a vinyl chloride frame is used, but the material can be changed as appropriate, and for example, another synthetic resin frame or metal frame can be adopted.

(3) In the embodiment, the tip of the protruding portion is melted by the heater and expanded, but it is also possible to weld it to the frame. Further, the heater H has a columnar shape, but its shape and the like can be changed as appropriate, and it can be, for example, a plate shape. Further, without using the heater H, it is possible to melt the tip of the protruding portion by frictional heat by pressing the tip of a cylindrical rod which is a pressing tool against the tip of the protruding portion and sliding, for example, rotating. . (4) In the embodiment, the wood screw 10 is used as the second pin.
However, other pins such as bolts may be used.

[0045]

INDUSTRIAL APPLICABILITY The pin device of the present invention can be used both when the heat insulating box body is formed of heat insulating panels having the same thickness and when it is formed of heat insulating panels having different thicknesses. Therefore, it is not necessary to prepare various pin devices for manufacturing the heat insulation panel.

When the heat insulation box is composed of heat insulation panels having the same thickness, the heat insulation panel is manufactured without inserting the second pin into the gas vent hole of the pin device, and heat insulation is performed at the time of manufacturing the heat insulation panel. The gas generated when the material foams is released to the outside through the gas vent hole. As a result, degassing is sufficiently performed, gas is not accumulated inside the heat insulating panel, and the heat insulating panel is less likely to be defective.

On the other hand, when the heat insulating panel is composed of heat insulating panels having different thicknesses, the second pin is inserted into the gas vent hole of the pin device to manufacture the heat insulating panel, so that the adjacent heat insulating panel is The adjacent heat insulation panels can be connected by engaging the hooks of the hook device with the second pins even when they are placed on the floor panels of different heights.

Further, since the pin support case of the pin device is molded of synthetic resin and the reinforcing portion having an appropriate shape can be integrally formed, the pin support case need not be fixed to the gas vent hole. The support case is not crushed by the pressure when the heat insulating material foams.

When a wood screw is used for the second pin, the wood screw is commercially available at a low cost, and the cost can be reduced. Further, when the inner diameter of the gas vent hole is smaller than the outer diameter of the first pin, the strength of the pin support case can be secured despite the hole being formed because the hole is small, and This gas vent hole enables good gas venting during foaming of the heat insulating material.

[Brief description of drawings]

FIG. 1 is a partially cutaway front view of an embodiment of a pin device and a hook device for an assembled heat insulating box according to the present invention.

FIG. 2 is a diagram for explaining a state before assembling the pin device, in which (a) is a plan view and (b) is a front view.

FIG. 3 is an explanatory view of a pin device and an opening for the pin device,
(A) is a figure of an opening of a vinyl chloride frame, (b) is a side view of a pin device, (c) is a front view of a pin device, (d) is a top view of a pin device.

FIG. 4 is a cross-sectional view of the pin device, (a) of FIG.
3B is a cross-sectional view taken along the line A-B in FIG. 3C.

FIG. 5 is a diagram showing a state in which a seal is attached to the pin device P,
(A) is a plan view and (b) is a front view.

FIG. 6 is a front view showing a state in which the pin device is coupled to a vinyl chloride frame, (a) is an overall view, and (b) is an enlarged view of a main part.

7A and 7B are views for explaining a method of connecting the pin device and the vinyl chloride frame, FIG. 7A is a perspective view before connection, and FIG. 7B is a perspective view of a main part immediately before connection.

FIG. 8 is a plan sectional view of FIG.

FIG. 9 is a partially cutaway front view of a prefabricated refrigerator-freezer constructed of heat insulating panels having different thicknesses.

FIG. 10 is a front view of the pin device and the hook device in FIG.

FIG. 11 is a perspective view of a prefabricated refrigerator-freezer having a refrigerator compartment and a freezer compartment.

FIG. 12 is a front view of a pin device including a hook device and a conventional pin.

FIG. 13 is a front view of a pin device including two hook devices and a conventional pin.

14 is a view of the pin device shown in FIG. 13, (a) is a front view, and (b) is a plan view.

[Explanation of symbols]

 F hook device P pin device 51 pin support case 53 hook entry opening 67 first pin 69 degassing hole 91 face material 93 heat insulating material 97,99 heat insulating panel 98,100 heat insulating floor panel 102 wood screw (second pin)

Claims (2)

[Claims] 1. A cavity panel is formed by a pair of facing materials that are spaced apart and opposed to each other, and a pin device or a hook device is arranged in a gap in the peripheral portion of the cavity panel. In a pin device for an assembled heat-insulating box for connecting heat-insulating panels formed by injecting and foaming heat-insulating material into the internal space, a pin support case made of synthetic resin with a hook entry opening formed on one surface The pin support case is fixed with a first pin for connecting to an adjacent heat insulation panel when the adjacent heat insulation panel is placed on a floor panel having the same height. A set formed with a vent hole into which a second pin for connecting with an adjacent heat insulation panel can be inserted when the panels are placed on floor panels of different heights. Pin device for stand up heat insulation box. 2. A hollow panel is constituted by a pair of facing materials that are spaced apart and opposed to each other, and a pin device or a hook device is arranged in a gap in the peripheral portion of the hollow panel, and then the hollow panel In a pin device for an assembled heat-insulating box for connecting heat-insulating panels formed by injecting and foaming heat-insulating material into the internal space, a pin support case made of synthetic resin with a hook entry opening formed on one surface The pin support case is fixed with a first pin for connecting to an adjacent heat insulation panel when the adjacent heat insulation panel is placed on a floor panel having the same height. Formed to connect with adjacent insulation panels when the panels are placed on floor panels of different height, the inner diameter is smaller than the outer diameter of the first pin, and there is a vent hole for inserting wood screws. A pin device for an assembled heat-insulating box body, which is characterized by being removed.