阅读说明：本技术 集装箱的门密封构造 (Door sealing structure of container ) 是由 石川史纲 黑须谦一 于 2020-03-24 设计创作，主要内容包括：【课题】即使隔热材料与缘部件的尺寸公差存在差异,也能够抑制在这两个部件的固定部中产生残留应力。【解决手段】本发明具备相对于集装箱主体的门开口部开闭自如的门,且以覆盖门的周缘处的表背两面及端面的方式安装缘部件。在缘部件安装有在将门相对于门开口部关闭时,将门与门开口部之间密封的第一密封部件及第二密封部件。缘部件具备位于门的外侧的外侧缘部件、以及位于门的内侧的内侧缘部件。(To suppress the occurrence of residual stress in a fixing part of a heat insulating material and an edge member even if there is a difference in dimensional tolerance between the two members. The present invention is provided with a door which can be freely opened and closed relative to a door opening part of a container main body, and edge members are installed in a mode of covering front and back surfaces and end surfaces at the periphery of the door. The edge member is attached with a first seal member and a second seal member that seal a gap between the door and the door opening when the door is closed with respect to the door opening. The edge member includes an outer edge member located outside the door and an inner edge member located inside the door.)

1. A door seal structure for a container, comprising:

a container main body;

a door for opening and closing a door opening of the container body;

a rim member attached so as to cover front and back surfaces and end surfaces of the door at a peripheral edge thereof; and

a first sealing member attached to the rim member and sealing a gap between the door and the door opening when the door is closed with respect to the door opening; and is

The edge member includes an outer edge member located outside the door, and an inner edge member located inside the door and constituting a member different from the outer edge member,

the outer edge member includes an outer surface portion covering a front surface side of the door and an outer end surface portion covering an end surface of the door,

the inner edge member includes an inner back surface portion covering a back surface side of the door and an inner end surface portion covering an end surface of the door,

the outer side end surface portion and the inner side end surface portion overlap in a direction perpendicular to an end surface of the door.

2. The door seal structure for a container according to claim 1,

the first seal member is attached to a portion where the outer end surface portion and the inner end surface portion overlap.

3. The door sealing structure of a container according to claim 2,

a second seal member is mounted to the outer edge member between the surface of the door and the first seal member.

4. The door sealing structure of a container according to claim 3,

the outer edge member includes a seal mounting portion protruding in a direction approaching a peripheral edge of the door opening portion, and the second seal member is mounted on a door back side of the seal mounting portion.

5. The door sealing structure of a container according to any one of claims 1 to 4,

the outer side edge member is made of metal and the inner side edge member is made of resin.

6. The door sealing structure of a container according to any one of claims 1 to 5,

an end surface of the door has a front-surface-side end surface located on a front surface side of the door and a rear-surface-side end surface formed at a position farther from a peripheral edge of the door opening portion than the front-surface-side end surface and located on a rear surface side of the door,

the front side end surface is formed at the front end of a protruding portion protruding toward the peripheral edge of the door opening portion with respect to the back side end surface,

the outer rim member is mounted to the nose portion,

the inner edge member is attached to the rear side end surface and the rear surface of the door.

Technical Field

The present invention relates to a door sealing structure of a container.

Background

As a door seal structure of a container, the following is known: a heat insulating material is filled between a door panel provided on the front side of the door and an inner liner provided on the back side of the door, and a flange member is fixed between the upper end of the inner liner and the upper end of the inside of the door panel. The seal members are provided on the door panel side and the inner panel side of the edge member, respectively.

Disclosure of Invention

[ problems to be solved by the invention ]

In the case of a structure in which one integrated edge member is fixed between the inner panel and the door panel, residual stress is generated in the fixed portion between the heat insulating material and the edge member due to the difference in dimensional tolerance between the two members, and particularly, a member having low strength may be broken.

Therefore, an object of the present invention is to suppress generation of residual stress in the fixing portions of the heat insulating material and the edge member even if there is a difference in dimensional tolerance between the two members.

[ means for solving problems ]

A door seal structure for a container according to an aspect of the present invention includes: a container main body; a door for opening and closing a door opening of the container body; a rim member attached so as to cover front and back surfaces and end surfaces of the door at a peripheral edge thereof; and a first sealing member attached to the rim member and sealing a gap between the door and the door opening when the door is closed with respect to the door opening. The edge member includes: an outer edge member located at an outer side of the door; and an inner edge member that constitutes a member different from the outer edge member and is positioned inside the door.

[ Effect of the invention ]

According to the present invention, even if there is a difference in dimensional tolerance between the heat insulating material and the edge member, it is possible to suppress the occurrence of residual stress in the fixing portions of the two members.

Drawings

Fig. 1 is a perspective view of a container according to the present embodiment.

Fig. 2 is a sectional view a-a of fig. 1.

Fig. 3 is a sectional view showing the periphery of the first seal member and the second seal member of fig. 2.

Detailed Description

Hereinafter, the door sealing structure of the container according to the present embodiment will be described in detail. For convenience of explanation, the dimensional ratios in the drawings are exaggerated and may be different from the actual ratios.

Fig. 1 shows an air container 1 as an example. The container 1 includes a container body 3 having a substantially rectangular parallelepiped shape as a whole, and a door 5 provided on one surface of the front side of the container body 3 and opened in the left and right directions. The container body 3 includes an upper wall portion 7, a lower wall portion 9, a rear wall portion 11, and left and right side wall portions 13 and 15. A base 16 is provided below the lower wall 9.

A door opening 17 is formed on one surface of the container body 3 on the front side, and the door 5 is attached to the door opening 17 so as to be openable and closable. A front wall 19 of the container body 3 is formed above the door opening 17. The door 5 includes a left door 21 and a right door 23. The left door 21 has a smaller width in the left-right direction than the right door 23. The left door 21 is opened and closed by upper and lower hinges 25 and 27 provided at the end of the side wall portion 13 on the door opening 17 side. The right door 23 is opened and closed by three upper and lower hinges 29, 31, 33 provided at the end of the side wall 15 on the door opening 17 side.

A lock lever 35 extending in the vertical direction is provided inside the right door 23 near the left door 21. A lock mechanism 37 is provided at the lower end of the lock lever 35. By rotating the lock lever 35, the lock pawl on the lock lever 35 side is engaged with the engaged portion on the container body 3 side, thereby performing locking. The rotation of the locking lever 35 is performed by operating an operating lever 39 provided at the substantially center of the right door 23.

In performing the locking operation, the operation is performed in a state where the left door 21 is closed first and then the right door 23 is closed. At this time, the opening of the left door 21 is restricted so that the edge portion of the right door 23 on the left door 21 side covers the edge portion of the left door 21 on the right door 23 side.

Next, a door seal structure will be explained.

The container body 3 and the door 5 are each a heat insulating structure having an outer plate, an inner plate, and a heat insulating material filled between the outer plate and the inner plate. Therefore, the container 1 of the present embodiment can be used for refrigeration or freezing. The heat insulating material is made of, for example, foamed urethane.

Fig. 2 is a sectional view a-a of fig. 1. As shown in fig. 2, the left side wall portion 13 includes an outer plate 41, an inner plate 43, and a heat insulator 45 filled between the outer plate 41 and the inner plate 43. The upper wall portion 7, the lower wall portion 9, the rear wall portion 11, and the right side wall portion 15 of the container body 3 also have the same structure as the left side wall portion 13.

The door 5 similarly includes an outer panel 47, an inner panel 49, and a heat insulator 51 filled between the outer panel 47 and the inner panel 49. The outer panel 47 side of the heat insulator 51 protrudes toward the left side in fig. 2 with respect to the inner panel 49 side to form a protrusion 53. The protruding portion 53 protrudes toward the peripheral edge on the left side in fig. 2 of the door opening 17. The thickness T1 of the projection 53 is substantially equal to the thickness T2 of the portion where the projection 53 is not formed. T1+ T2 is T, which is the entire thickness of the heat insulating material 51.

The end surface of the heat insulating material 51 on the side wall portion 13 side includes a front surface side end surface 55 corresponding to the protruding portion 53 and a back surface side end surface 57 corresponding to a portion where the protruding portion 53 is not formed, and a step is formed. The front-side end surface 55 is located on the front side of the door 5, and the back-side end surface 57 is located on the back side of the door 5.

An outer edge member 59 is attached to the protruding portion 53 having the front-side end surface 55, and an inner edge member 61 is attached to the rear-side end surface 57. The outer edge member 59 and the inner edge member 61 are formed as different members from each other. The outer edge member 59 is made of metal such as aluminum, and the inner edge member 61 is made of resin such as ASA (Acrylonitrile Styrene acrylate). The outer edge member 59 and the inner edge member 61 constitute a door edge member 63 as edge members.

The outer edge member 59 includes: an outer surface portion 59a covering the surface of the outer panel 47 on the front surface side of the door 5; a 1 st outer end surface portion 59b covering the front side end surface 55; an outer back surface portion 59c covering the side of the protruding portion 53 opposite to the outer panel 47; and a 2 nd outer end surface portion 59d covering the back surface side end surface 57. The outer surface portion 59a is bent substantially at right angles to the 1 st outer end surface portion 59b, the 1 st outer end surface portion 59b is bent substantially at right angles to the outer back surface portion 59c, and the outer back surface portion 59c is bent substantially at right angles to the 2 nd outer end surface portion 59 d. The 2 nd outer end surface portion 59d covers a part of the rear surface side end surface 57 on the side of the protruding portion 53, but may cover substantially the entire rear surface side end surface 57.

The inner edge member 61 includes: an inner back surface portion 61a covering the inner panel 49 located on the back surface side of the door 5; and an inner end surface portion 61b covering the 2 nd outer end surface portion 59d of the outer edge member 59. The inner back surface portion 61a is bent substantially at a right angle to the inner end surface portion 61 b. The inner end surface portion 61b covers a portion of the 2 nd outer end surface portion 59d other than the portion on the outer rear surface portion 59c side.

The outer edge member 59 is screwed and fixed to the heat insulating material 51 at the outer surface portion 59a by a tapping screw 65. At this time, insertion holes into which tapping screws 65 are inserted are formed in the outer surface portion 59a and the outer plate 47. Fixing portions by tapping screws 65 are formed at a plurality of positions in the vertical direction of the door 5, avoiding the positions of the hinges 25, 27.

Similarly, the inner edge member 61 is fixed to the heat insulator 51 by screwing the inner back surface portion 61a with the tapping screws 67. At this time, insertion holes into which tapping screws 67 are inserted are formed in the inner back surface portion 61a and the inner panel 49 in advance. Fixing portions by tapping screws 67 are formed at a plurality of locations in the vertical direction of the door 5.

A first seal member 69 is attached to a portion where the 2 nd outer end surface portion 59d of the outer edge member 59 overlaps the inner end surface portion 61b of the inner edge member 61. A second seal member 71 is attached to a corner portion between the 1 st outer end surface portion 59b and the outer rear surface portion 59c of the outer edge member 59. The second seal member 71 is located on the side closer to the door 5 than the first seal member 69. The first seal member 69 and the second seal member 71 extend in the vertical direction of the door 5 (the direction perpendicular to the paper surface in fig. 2), and seal the gap between the door 5 and the door opening 17.

As also shown in fig. 3, the first seal member 69 includes: a flat plate-shaped mounting portion 69 a; an inner seal portion 69b protruding from an end portion of the mounting portion 69a on the inner panel 49 side toward the side wall portion 13; and an outer seal portion 69c protruding from an end portion of the mounting portion 69a on the outer panel 47 side toward the side wall portion 13. The outer seal portion 69c has a longer protruding length than the inner seal portion 69 b. The inner seal portion 69b and the outer seal portion 69c have hollow portions each having a space therein.

The mounting plate 75 is disposed on the surface of the mounting portion 69a opposite to the inner edge member 61. The first seal member 69 is fixed to the door 5 by screwing the tapping screws 77 into the heat insulating material 51 from above the mounting plate 75. At this time, insertion holes into which tapping screws 77 are inserted are formed in advance in the mounting plate 75, the mounting portion 69a, the inner end surface portion 61b, and the 2 nd outer end surface portion 59 d.

The second seal member 71 includes a mounting portion 71a and a flat plate-shaped seal portion 71b protruding from the mounting portion 71a toward the periphery of the door opening 17. A protruding piece 71c protruding toward the rear surface side of the door 5 is formed near the mounting portion 71a of the seal portion 71 b.

A fitting recess 59f into which the mounting portion 71a of the second seal member 71 is fitted is formed in a corner portion 59e between the 1 st outer end surface 59b and the outer back surface portion 59c of the outer edge member 59. The fitting recess 59f includes an opening 59g that opens on the side wall portion 13 in the direction perpendicular to the surface of the 1 st outer end surface portion 59 b.

As shown in fig. 3, the opening 59g is narrower in the thickness direction (vertical direction in fig. 3) of the sealing portion 71b than the fitting recess 59f, and the detachment of the attachment portion 71a from the fitting recess 59f is suppressed. The protruding piece 71c is positioned outside the fitting recess 59f in a state where the attachment portion 71a is fitted in the fitting recess 59 f. That is, in a state where the attachment portion 71a is fitted in the fitting recess 59f, the neck portion 71h between the attachment portion 71a and the protruding piece 71c enters the opening 59 g.

A flat plate-like seal attachment portion 59i protruding in the same direction as the seal portion 71b is formed on the front surface side of the door 5 of the corner portion 59e of the outer edge member 59 with respect to the second seal member 71. The seal mounting portion 59i is located at a position in contact with or close to the seal portion 71 b. The distal ends of the seal portion 71b and the seal attachment portion 59i protrude further to the left side wall portion 13 side in fig. 2 than the distal end of the outer seal portion 69 c.

As shown in fig. 2, a side wall outer edge member 79 is attached to an end portion 45a on the front side (lower side in fig. 2) of the heat insulating material 45. The side wall outer edge member 79 is made of metal such as aluminum. The side wall outer edge member 79 includes: an end surface portion 79 a; an outer side portion 79b bent rearward from an outer end of the end surface portion 79 a; and an inner side portion 79c bent rearward from an inner end of the end surface portion 79 a.

The outer side portion 79b includes: a first outer side surface portion 79b1 bent at an angle of approximately 90 degrees with respect to the end surface portion 79 a; a second outer side face portion 79b2 bent at an angle of approximately 90 degrees outward from the rear end of the first outer side face portion 79b 1; and a third outer side surface portion 79b3 bent at an angle of approximately 90 degrees rearward from an outer end portion of the second outer side surface portion 79b 2. The third outer side surface portion 79b3 is fixed to the heat insulating material 45 by, for example, tapping screws screwed into the heat insulating material 45, although not shown. At this time, insertion holes into which tapping screws are inserted are formed in the third outer side surface portion 79b3 and the outer panel 41 in advance.

Similarly, the inner surface portion 79c includes: a first inner side surface portion 79c1 bent at an angle of approximately 90 degrees with respect to the end surface portion 79 a; a second inner side surface portion 79c2 bent at an angle of approximately 90 degrees from the rear end of the first inner side surface portion 79c1 toward the inside (the container inside side); and a third inner side surface portion 79c3 bent at an angle of approximately 90 degrees rearward from an inner end of the second inner side surface portion 79c 2. The front end 45a of the heat insulator 45 has a shape corresponding to the shape of the side wall outer edge member 79.

The side wall inner edge member 81 is provided inside (on the container inner side) the end of the third inner side surface portion 79c3 opposite to the second inner side surface portion 79c 2. The side wall inner edge member 81 and the side wall outer edge member 79 constitute a side wall edge member 83. The side wall inner edge member 81 is made of resin such as ASA. The side wall inner edge member 81 includes: a first mounting portion 81a mounted on a surface of the third inner side surface portion 79c 3; a bent portion 81b bent at an angle of substantially 90 degrees from the first mounting portion 81a toward the side opposite to the outer panel 41; and a second mounting portion 81c bent at an angle of approximately 90 degrees rearward from the bent portion 81 b.

Although not shown, the first attachment portion 81a of the side wall inner edge member 81 is fixed to the heat insulating material 45 together with the third inner side surface portion 79c3 of the side wall outer edge member 79 by, for example, a tapping screw screwed into the heat insulating material 45. At this time, insertion holes into which tapping screws are inserted are formed in advance in the first attachment portion 81a and the third inner side surface portion 79c 3. Although not shown, the second attachment portion 81c of the side wall inner edge member 81 is fixed to the heat insulating material 45 by, for example, a tapping screw screwed into the heat insulating material 45. At this time, insertion holes into which tapping screws are inserted are formed in advance in the second attachment portion 81c and the inner panel 43.

The first inner side surface portion 79c1 of the inner side surface portion 79c faces the 1 st outer side end surface portion 59b of the outer edge member 59 at a spacing. Similarly, the third inner side surface portion 79c3 and the first attachment portion 81a are opposed to the inner end surface portion 61b of the inner edge member 61 at a distance. The second inner side surface portion 79c2 faces a part of the second seal member 71 on the tip end side of the seal portion 71 b.

Fig. 2 shows the sealing structure between the door 5 and the left side wall portion 13, but the sealing structures between the door 5 and the right side wall portion 15, between the door 5 and the front wall portion 19, and between the door 5 and the lower wall portion 9 are basically the same as those in fig. 2. The first sealing members 69 are provided at positions corresponding to the side wall portions 13 and 15, the front wall portion 19, and the lower wall portion 9, respectively, and the adjacent end portions of the first sealing members 69 are brought into close contact with each other. The same applies to the second seal member 71.

As shown in fig. 2, when the door 5 (left door 21) is closed, the first seal member 69 and the second seal member 71 are in close contact with the side wall edge member 83 at their tips. More specifically, the outer seal portion 69c of the first seal member 69 is in close contact with the vicinity of the first mounting portion 81a of the third inner side surface portion 79c3 or with both the third inner side surface portion 79c3 and the first mounting portion 81 a. The inner seal portion 69b of the first seal member 69 is closely attached to the periphery of the corner portion between the bent portion 81b and the second mounting portion 81 c. The second seal member 71 is in close contact with the second inner side surface portion 79c 2.

Thereby, the door 5 (left door 21) and the side wall portion 13 are sealed. The door 5 (right door 23) and the right side wall portion 15, the door 5 (left door 21 and right door 23) and the front wall portion 19, and the door 5 (left door 21 and right door 23) and the lower wall portion 9 are sealed in the same manner.

The heat insulator 51 of the door 5 is formed in a shape having the protruding portion 53 as shown in fig. 2 by removing the rear surface side end face 57 side by machining a member formed in a state where the front surface side end face 55 and the rear surface side end face 57 are flush with each other. In this case, the thickness T1 of the protruding portion 53 located between the outer surface portion 59a and the outer back surface portion 59c of the outer edge member 59 can be easily maintained with accuracy by machining. Therefore, the protruding portion 53 is attached to be sandwiched between the outer surface portion 59a and the outer back surface portion 59c with substantially no gap.

In contrast, the thickness T of the entire heat insulator 51 between the outer surface portion 59a of the outer edge member 59 and the inner back surface portion 61a of the inner edge member 61 needs to be increased in the accuracy of the mold in order to ensure the accuracy by molding, which increases the manufacturing cost. Therefore, in order to keep the manufacturing cost low, the thickness dimension T may have uneven dimensional accuracy.

However, in the present embodiment, an inner edge member 61 separate from the outer edge member 59 is attached to the heat insulator 51 on the back surface side of the heat insulator 51. In this case, the relative mounting positions of the outer edge member 59 and the inner edge member 61 can be changed in the thickness dimension T direction. Specifically, for example, the insertion holes of the tapping screws 77 formed in advance in the inner end surface portion 61b of the inner edge member 61 are long holes that are long in the thickness direction. This allows the inner edge member 61 to be moved and adjusted in the thickness direction of the heat insulator 51.

By moving and adjusting the inner edge member 61 in the thickness direction of the heat insulator 51, the distance between the inner back surface portion 61a and the outer surface portion 59a of the outer edge member 59 can be adjusted to the thickness dimension T of the heat insulator 51 (precisely, the sum of the thicknesses of the outer panel 47 and the inner panel 49). This can suppress the occurrence of a gap between the outer surface portion 59a of the outer edge member 59 and the outer panel 47 or between the inner back surface portion 61a of the inner edge member 61 and the inner panel 49. Further, the heat insulating material 51 can be suppressed from being excessively compressed between the outer surface portion 59a and the inner back surface portion 61 a.

Therefore, when the inner back surface portion 61a of the inner edge member 61 is fixed to the heat insulating material 51 by the tapping screws 67, even if there is a difference in dimensional tolerance between the heat insulating material 51 and the inner edge member 61, it is possible to suppress generation of residual stress in the fixing portions of these two members. This can suppress damage such as cracking in the periphery of the fixing portion of the heat insulating material 51 by the tapping screw 67, thereby improving durability.

In this case, in the present embodiment, the 2 nd outer end surface portion 59d of the outer edge member 59 and the inner end surface portion 61b of the inner edge member 61 overlap each other in a direction perpendicular to the end surface of the left door 21 facing the side wall portion 13. In this case, by moving the inner end surface portion 61b along the contact surface with respect to the 2 nd outer end surface portion 59d, it is possible to easily cope with the change in the thickness dimension T of the heat insulating material 51.

In the present embodiment, the first seal member 69 is attached to a portion where the 2 nd outer end surface portion 59d and the inner end surface portion 61b overlap. In this case, the first seal member 69 can be fastened together with the outer edge member 59 and the inner edge member 61 using the tapping screws 77. This simplifies the work of attaching the first seal member 69, the outer edge member 59, and the inner edge member 61 to the heat insulator 51.

In the present embodiment, the second seal member 71 is attached to the outer edge member 59 between the surface of the left door 21 and the first seal member 69. In this case, since the second seal member 71 is located further inward than the surface of the left door 21, the second seal member 71 is less likely to be exposed to direct sunlight or the like, and weather resistance is improved. Since the first seal member 69 is located further inside than the second seal member 71, it is less likely to be exposed to direct sunlight or the like, and weather resistance is further improved.

Since the first seal member 69 and the second seal member 71 are positioned inside the surface of the left door 21, the seal member can be prevented from being turned over, as in the case where the seal member is positioned on the surface of the door, and the reliability of the door seal structure can be improved.

The sealing configuration between the left door 21 and the left side wall portion 13 shown in fig. 2 is also applied between the right door 23 and the lower wall portion 9 shown in fig. 1. In this case, the first seal member 69 and the second seal member 71 are positioned inside the surface of the door 5, and a gap 85 is formed between the outer edge member 59 and the sidewall edge member 83 on the sidewall 13 side. In the portion corresponding to the gap 85, a portion where the locking claw of the lock mechanism 37 shown in fig. 1 engages with the engaged portion can be exposed, and the locked state can be easily confirmed from the outside. When the seal member is provided on the surface of the door, the seal member covers a portion where the lock mechanism 37 engages, and cannot be confirmed from the outside.

In the present embodiment, the outer edge member 59 includes a seal attachment portion 59i protruding in a direction approaching the peripheral edge of the door opening 17, and the second seal member 71 is attached to the door back surface side of the seal attachment portion 59 i. In this case, the second seal member 71 is protected from direct sunlight or the like from the outside of the door 5 by the seal attachment portion 59i, so weather resistance is further improved.

In the present embodiment, the outer edge member 59 is made of metal, and the inner edge member 61 is made of resin. By making the outer edge member 59 of a metal that is less likely to deteriorate than a resin, the life of the door 5 can be increased, and the rigidity of the door can be improved. By making the inner edge member 61 of resin having lower thermal conductivity than metal, the cool air inside the container is less likely to escape to the outside, and the reliability as a container for refrigeration or freezing is improved.

In the present embodiment, the end surface of the left door 21 has: a surface-side end face 55 located on the surface side of the left door 21; the back side end surface 57 is formed at a position farther from the peripheral edge of the door opening 17 than the front side end surface 55, and is positioned on the back side of the left door 21. The front-side end surface 55 is formed at the tip of the protruding portion 53 protruding toward the peripheral edge of the door opening 17 with respect to the rear-side end surface 57. The outer edge member 59 is attached to the protrusion 53, and the inner edge member 61 is attached to the rear side end surface 57 and the rear side inner panel 49.

In this case, the first seal member 69 is attached to the rear-surface-side end surface 57, whereby the protruding portion 53 and the outer edge member 59 cover a part of the door surface side. Thus, the first seal member 69 is protected from direct sunlight or the like from the outside of the door 5 by the protruding portion 53 and the outer edge member 59, and therefore the weather resistance is further improved.

While the embodiments of the present invention have been described above, these embodiments are merely illustrative examples described for easy understanding of the present invention, and the present invention is not limited to these embodiments. The technical scope of the present invention is not limited to the specific technical items disclosed in the above embodiments, and includes various modifications, alterations, and alternative techniques that can be easily derived from the technical items.

For example, tapping screws 65, 67, and 77 are used when attaching the outer edge member 59, the inner edge member 61, and the first seal member 69 to the heat insulating material 51, but other fixing methods using fasteners or the like may be applied.

The heat insulating material 51 includes the protruding portion 53 and has a step formed on the end surface, but may not have a step. That is, the front-side end surface 55 and the back-side end surface 57 may be flush with each other. In this case, for example, it is conceivable that the outer edge member 59 has an L-shaped cross section, as in the inner edge member 61.

The overlap between the 2 nd outer end surface portion 59d of the outer edge member 59 and the inner end surface portion 61b of the inner edge member 61 may be such that the 2 nd outer end surface portion 59d is positioned on the first seal member 69 side and the inner end surface portion 61b is positioned on the rear end surface 57 side.

The outer edge member 59 and the side wall outer edge member 79 are not limited to aluminum, and may be made of other metals, or may be made of other materials such as resin. The inner edge member 61 and the side wall inner edge member 81 are not limited to ASA, and may be made of other resins, or may be made of other materials such as metal.

In the above-described embodiment, the description has been given taking an air container as an example, but the present invention is not limited to the air container, and may be applied to, for example, a container for a ship or a truck (a lorry).