JP2000283642A - Structure for sealing door of storage - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a structure for sealing a door of a storage easy in exchange and capable of securing air tightness for a long period. SOLUTION: In a structure for tightly closing a door of a low temperature storage wherein an openable door 5 connected at one side by a hinge and opened-and-closed at the other side is provided in an opening part of a heat insulating box body, packing 25 coming into contact with a door-part 34 of a heat insulating box body side is provided on an inside circumference of the openable door 5, and the closing door 5 is closed by compressing and deforming the packing 25, the packing 25 comprises a hollow member 31 made of vinyl chloride resin, and a space 36a is formed in a part of the hollow member 31, and a foamed rubber member 37 is densely provided in the space 36a.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a door sealing structure for a storage, which closes an opening and closing door by compressing and deforming a packing.

[0002]

2. Description of the Related Art Generally, in a storage for distribution such as a cold roll box or a container, a high hermetic structure is required in order to realize constant temperature transportation during transportation. In particular, the role of the packing plays a major role in the sealing properties of the door, and after the door is closed to secure airtightness inside the warehouse and prevent the door from being opened during transportation,
Further, a door sealing structure is employed in which the packing is crimped and closed by the latch. A packing for an opening / closing door employing this type of door sealing structure is required to have high elasticity because it is pressed by a latch to a door stop of a storage body when the opening / closing door is closed.

FIG. 3 shows a cross section around the inner surface of a conventional storage door. Reference numeral 51 denotes an opening / closing door.
Is provided with a face material 52, in which a foamed heat insulating material 53 is provided.
Is filled. Further, a breaker 55 that cuts off heat so that cold heat in the interior 54 is not transmitted to the outside through the surface material 52 is attached to the opening / closing door 51, and an engagement recess 56 is formed in the breaker 55. Packing 5 in engagement recess 56
7 is inserted and engaged, and the packing 57 is inserted.
Is fixed to the door 51.

The packing 56 is formed of a hollow member 59 made of a vinyl chloride resin. The hollow member 59 is formed with two projecting walls 60 having a substantially circular arc shape. It is pressed by the door stop 61 of the storage main body and is compressed and deformed, so that the airtightness of the inside of the storage 54 is ensured.

[0005]

However, the packing 57 made of vinyl chloride resin of the above-mentioned opening and closing door 51 is apt to change over time due to the characteristics of the material and the hollow structure, the elastic reaction force is reduced, and the packing 56 is formed. However, there is a problem that the airtightness is reduced.

In order to overcome the drawbacks of the packing 57 made of vinyl chloride resin, there has been proposed a packing formed of foamed rubber having high elasticity.

However, it is difficult to form a complicated shape of the foamed rubber, and for example, it is impossible to form a detachable structure for facilitating attachment and detachment to and from a fixing portion of the opening / closing door. Therefore, there is a problem that the packing made of foamed rubber cannot be easily replaced.

An object of the present invention is to solve the above-mentioned problems of the prior art, and to provide a storage door sealing structure that can be easily replaced and can maintain airtightness for a long period of time.

[0009]

According to the first aspect of the present invention,
An opening and closing door that is hinged on one side to the opening of the heat-insulating box and that is opened and closed on the other side is provided. In the door closed structure of the storage, which is deformed to close the opening and closing door, the packing is formed of a hollow member made of a vinyl chloride resin, a space is formed in a part of the hollow member, and foam rubber is densely filled in this space. It is characterized by having been provided.

According to the present invention, since the foamed rubber is densely provided in the space formed in the hollow member made of the vinyl chloride resin,
When the packing is expanded after compression, the foamed rubber having high elasticity pushes out the hollow member, which tends to change over time, to the original shape, and the protrusion height of the packing to the original door stop side is secured,
High airtightness of the opening / closing door by packing can be maintained for a long time. In addition, since the hollow member is formed of a vinyl chloride resin that enables complex molding, it is possible to form a structure for facilitating attachment and detachment of the packing in the hollow member, thereby facilitating replacement of the packing.

According to a second aspect of the present invention, there is provided an opening / closing door having one side hingedly connected to the opening of the heat insulating box and the other side being opened / closed, and a door stop on the heat insulating box side around the inner surface of the opening / closing door. The packing is formed of a polyvinyl chloride resin hollow member, and a part of the hollow member is provided with another packing. A substantially cylindrical space surrounded by a portion having a lower projecting height toward the door stop side than the portion is formed, and substantially cylindrical foam rubber is densely provided in this space.

According to the present invention, since the substantially cylindrical foamed rubber is densely provided in the substantially cylindrical space formed in the hollow member made of the vinyl chloride resin, high elasticity is obtained when the packing is expanded after compression. The foamed rubber extrudes the hollow member, which is apt to change over time, to its original shape, so that the height of the packing protruding toward the original door stop is ensured, and the high airtightness of the door by the packing can be maintained for a long time. In addition, since the hollow member is formed of a vinyl chloride resin that enables complex molding, it is possible to form a structure for facilitating attachment and detachment of the packing in the hollow member, thereby facilitating replacement of the packing. Further, since the foamed rubber has a substantially columnar shape, the contact of the foamed rubber with the door stop portion is a line contact, and can exhibit higher elasticity than, for example, a rectangular parallelepiped foamed rubber.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings.

In FIG. 1, reference numeral 1 denotes a cold storage (storage) for distribution such as a cold roll box. The low-temperature storage 1 is connected to a power supply in, for example, a delivery center, and the power supply cools the inside of the storage, freezes the cold storage agent, and charges the battery. Thereafter, the low-temperature storage 1 is loaded on a delivery vehicle and transported, for example. At times, the inside of the refrigerator is cooled by operating the blower in the refrigerator using the battery as a power source to circulate the cool air of the regenerator in the refrigerator.

The low-temperature box 1 includes a heat-insulating box 2, and a caster 3 that allows the low-temperature box 1 to move is provided on the bottom surface of the heat-insulating box 2. Further, an interior (not shown in FIG. 1) is formed in the heat-insulating box 2, and an opening (not shown in FIG. 1) is formed in a front surface of the interior, and one side of the opening is hinged. An opening / closing door 5 is provided which is connected at 4 and is opened / closed on the other side. Reference numeral 6 denotes a gripper that is gripped during movement.

The opening / closing door 5 is provided with a rotating shaft 11.
Is provided. The latch 12 is connected to a rotating shaft 13, and the rotating shaft 13 is fixed to the door 5 by three shaft fixing members 14.
It is fixed rotatably. Hooks 15 are provided at both ends of the latch 13. Reference numeral 16 denotes a claw portion formed on the heat insulating box 2. When closing the door 5, the latch 12
Is rotated toward the latch receiver 13 to rotate the rotation shaft 13 to engage the hook 15 with the claw portion 16, and the door 5 is pressed against the heat-insulating box 2 toward the heat-insulating box 2.

As shown in FIG. 2, the opening / closing door 5 is provided with a face material 20, and the face material 20 is filled with a foamed heat insulating material 21. A recess 22 is formed around the inner surface of the opening and closing door 5 so as to be thinner than the other portions. The recess 22 prevents cold heat in the refrigerator from being transmitted to the outside through the surface material 20. A breaker 23 for performing heat cutting is attached. This breaker 2
3 is formed with an engagement recess 24 at the end thereof.
The engaging projection 26 of the packing 25 is inserted into the 4 and locked, and the packing 25 is fixed around the inner surface of the door 5.

In the door sealing structure according to the present embodiment, the packing 25 is formed by inserting a foamed rubber member 37 made of foamed rubber having high elasticity into a hollow member 31 made of vinyl chloride resin.

The packing 25 has a hollow member 31 made of vinyl chloride resin, and this hollow member 31 is formed by extrusion molding. The hollow member 31 has the engaging protrusion 26, and the engaging protrusion 26 is inserted and fitted into the engaging recess 24 of the breaker 23 as described above. The hollow member 31 has a support plate 32 that supports the hollow member 31, and the hollow member 31 has a partition plate 33 that separates a space inside and outside the warehouse. Reference numeral 34 denotes a door stop that the packing 25 comes into contact with when the door 5 is closed.

The hollow member 31 is formed with a pair of protruding walls 35 protruding in a substantially arc shape on the door stop portion 34 side, and a protruding hollow portion 35a is formed in the protruding wall 35. A cylindrical wall 36 is formed between the pair of projecting walls 35, and a substantially cylindrical cylindrical hollow portion 36a formed in the cylindrical wall 36 is formed.
A substantially columnar foamed rubber member 37 is densely provided in the (columnar space), and the foamed rubber member 37 is formed of foamed rubber. The foamed rubber member 37 can be freely inserted into and extracted from the cylindrical hollow portion 36a. Therefore, if the foam rubber member 37 is replaced with a foam rubber member having a different elastic reaction force,
The elastic reaction force of the entire packing 25 can be easily changed.

When the door 5 is closed and latched, the protruding wall 35 comes into contact with the door stop portion 34 and is compressed and deformed, and the cylindrical wall 36 is pressed by the door stop portion 34 to form the foam rubber member 37. Compression deformation. Thereby, there is no gap between the interior space and the exterior space, and the airtightness in the interior is ensured. When the door 5 is opened, the hollow member 31 is pushed out toward the door stop portion 34 by the elastic reaction force of itself and the elastic reaction force of the foamed rubber member 37 to restore the original shape, and the foamed rubber member is restored. 37 is restored to its original shape by its own elastic reaction force.

In this embodiment, since the foamed rubber member 37 is densely provided in the cylindrical hollow portion 36a formed in the hollow member 31 made of vinyl chloride resin, the packing 25 has high elasticity when it is expanded after compression. The foamed rubber member 37 extrudes the hollow member 31 made of vinyl chloride resin, which is susceptible to aging, to the original shape, so that the height of the packing 25 protruding toward the door stop portion is secured, and the packing 25 provides high airtightness in the compartment. Can be maintained for a long time.

Further, since the hollow member 31 is formed of a vinyl chloride resin which enables complicated molding, it is possible to form a structure for facilitating attachment and detachment of the packing 25 to the hollow member 31. The exchange of the packing 25 can be facilitated as compared with a packing made of only a foamed rubber which is difficult to form in a complicated shape.

Further, since the foamed rubber member 37 has a substantially cylindrical shape, the contact of the foamed rubber member 37 with the door stop is a line contact, so that the foamed rubber member 37 can exhibit higher elasticity than the rectangular parallelepiped foamed rubber member 37, for example. it can.

As described above, the present invention has been described based on one embodiment, but the present invention is not limited to this. In this embodiment, the foamed rubber member 37 has a substantially columnar shape, but may have a rectangular parallelepiped shape, for example.

[0026]

According to the first aspect of the present invention, since the foam rubber is densely provided in the space formed in the hollow member made of the vinyl chloride resin, the foam having high elasticity can be obtained when the packing is expanded after compression. The rubber extrudes the hollow member, which is apt to change over time, to its original shape, so that the height of the hollow member protruding toward the original door stop is ensured, and the high airtightness of the door by the packing can be maintained for a long time. In addition, since the hollow member is formed of a vinyl chloride resin that enables complex molding, it is possible to form a structure for facilitating attachment and detachment of the packing in the hollow member, thereby facilitating replacement of the packing.

According to the second aspect of the present invention, since the foamed rubber is densely provided in the space formed in the hollow member made of the vinyl chloride resin, the foamed rubber having high elasticity can be obtained when the packing is expanded after compression. By extruding the hollow member which is susceptible to aging into its original shape, the protruding height of the hollow member to the original door stop side is secured, and the high airtightness of the opening / closing door by packing can be maintained for a long time. In addition, since the hollow member is formed of a vinyl chloride resin that enables complex molding, it is possible to form a structure for facilitating attachment and detachment of the packing in the hollow member, thereby facilitating replacement of the packing. Also,
Since the foamed rubber has a substantially columnar shape, the contact of the foamed rubber to the door stop is a line contact, and can exhibit higher elasticity than, for example, a rectangular parallelepiped foamed rubber.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a low-temperature storage for distribution.

FIG. 2 is a cross-sectional view showing the periphery of an open / close door of a low-temperature storage;

FIG. 3 is a cross-sectional view showing the periphery of a conventional low-temperature storage door.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Low-temperature storage 2 Insulated box 4 Hinge 5 Opening door 12 Latch 25 Packing 31 Hollow member 34 Door contact part 36a Cylindrical space 37 Foam rubber member

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 3J040 AA02 BA10 EA07 EA21 EA44 FA06 FA08 HA22 3L102 JA06 KA01 KC02 KC07 KC08 KC11

Claims (2)

[Claims] An opening and closing door, one side of which is hingedly connected to the opening of the heat insulating box and the other side of which is opened and closed, is provided around the inner surface of the opening and closing door with a packing which comes into contact with a door stop on the side of the heat insulating box. In the door sealing structure of a storage, wherein the packing is compressed and deformed to close the opening / closing door, the packing is made of a hollow member made of a vinyl chloride resin, and a space is formed in a part of the hollow member. Closed door structure for storage, characterized by densely provided foam rubber. 2. An opening / closing door, one side of which is hingedly connected to the opening of the heat insulating box and the other side of which is opened / closed, is provided with a packing around the inner surface of the door, which comes into contact with a door stop on the heat insulating box side. In a door-closed structure of a storage, wherein the packing is compressed and deformed to close the opening / closing door, the packing comprises a hollow member made of a vinyl chloride resin, and a part of the hollow member is closer to the door stop than other parts. A door-closed structure for a storage, characterized by forming a substantially columnar space surrounded by a portion having a low protruding height into the space, and densely providing substantially columnar foamed rubber in this space.