JP2003081307A - Structure for sealing lid of container for transport - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a structure for sealing a lid of a container for transport, capable of making sealing properties more reliable in a container for transport, for which hermetical properties are particularly required like a container for the disposal of medical waste. SOLUTION: A protruding member 29 is formed on at least either a ceiling face 15 positioned inside a recessed locking portion 10 or a top face 6a of a flanged portion 6, both the ceiling face 15 and the top face 6a being opposed to each other.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lid sealing structure for a transport container, and more particularly to a lid sealing structure for a transport container suitable for transporting medical waste.

[0002]

2. Description of the Related Art Conventionally, articles used for medical purposes,
For example, injection needles, absorbent cotton, catheters, etc. are stored in a highly-sealed dedicated container and are processed as they are without being opened. The closed container used for such a purpose has, for example, FIGS. 6 and 7 (A) and (B).
As shown in, a small flange portion 34 is formed on the ceiling portion of the opening 32 of the container body 30. And
The opening 32 is tightly sealed by fitting a substantially dish-shaped lid 36 so as to cover both sides of the flange 34 from above.

That is, the outer peripheral edge of the lid 36 is provided with a concave locking portion 38 having a substantially U-shaped cross section, and the concave locking portion 38 is mounted so as to cover the outside of the flange portion 34. And the seal member 27 in the concave locking portion 38 is the flange portion 3
4, the opening 32 is sealed.

[0004]

By the way, since a transport container for treating medical waste is required to have a considerable sealing property, the inside of the concave locking portion 38 of the lid 36 is inward. The protrusion 40 is formed. However, in such a container for transportation, as shown in FIG.
Since a gap S is defined between the wall 35 on the inner side of 8 and the flange portion 34, the lid body 36 is moved downward until the lower surface of the flange portion 34 is positioned above the inner protrusion 40. If the seal member 27 is strongly pushed in, the impact may cause the seal member 27 to move and a part of the seal member 27 may slide into the gap S.

As described above, when the seal member 27 is sandwiched in the gap S in a partially slid state, the seal member 27 is sandwiched.
Therefore, there is a problem that a part of the liquid content leaks out, for example, when the container body 30 falls over and a strong impact is applied. On the other hand, in consideration of such a problem, today, a so-called liquid packing may be used as the seal member 27 instead of a rubber packing such as an O-ring. The liquid packing is used as a packing by filling the concave locking portion 10 with an adhesive resin. Such a liquid packing is relatively inexpensive as compared with a rubber packing and does not move when the lid 26 is fitted.

However, even such a liquid packing has the following problems. That is, since the liquid packing is gel-like, the elastic restoring force is weak and the lid 3
There is a problem that the hermeticity is lower than that of the O-ring, depending on how the 6 is pressed and the dimensional accuracy of the lid body 38 or the container body 30 during molding. To prevent this, the filling amount of the liquid packing must be increased. In that case, the cost becomes high and it is necessary to further improve the filling workability.

In view of such circumstances, the present invention is economically inexpensive and more reliable in sealing property, such as a container for treating medical waste, particularly a transporting container which is required to be hermetically sealed. It is an object of the present invention to provide a sealing structure for a lid in a transportation container that can be

[0008]

In order to achieve the above object, the sealing structure of the lid in the carrying container according to the present invention covers the flange portion 6 provided in the opening 4 of the container body 2, By fitting the concave locking portion 10 formed on the outer peripheral edge of the lid body 8, the seal member 27 in the concave locking portion 10 is brought into close contact with the flange portion 6 to seal the opening 4. A structure for sealing a lid in a transport container, wherein a projecting body 29 is formed on at least one of a ceiling surface 15 in the concave locking portion 10 and a ceiling surface 6a of the flange portion 6 which face each other. Is characterized by.

Here, the seal member 27 may be a liquid packing. Further, in the present invention, the protruding body 2
Reference numeral 9 denotes a small protrusion 33, and it is preferable that the small protrusion 33 is formed on the top surface 6a of the flange portion 6 over the entire circumference. Further, in the present invention, the projecting body 29 is a ridge 35 that is substantially parallel to the inner peripheral edge of the flange portion 6, and at least one ridge 35 is formed over the entire circumference of the flange portion 6. Preferably.

According to the present invention having such a structure, when the lid 8 is put on the opening 4 of the container body 2, the seal member 27 is provided.
Contact with the small protrusions 29 or the ridges 35 and are deformed, so that the contact area of the seal member with respect to the sealed portion is increased, and thus the sealing performance can be improved.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a shipping container according to an embodiment of the present invention. The container body 2 of this carrying container is integrally formed of synthetic resin such as polypropylene, and is formed into a substantially rectangular tube shape by the bottom wall and the four side walls. A flange portion 6 is formed on the opening 4 of the container body 2.

The opening 4 of the container body 2 thus formed is fitted with the plate-like lid 8 having the sealing member 27 on the ceiling as shown in FIG. Is closed to form a highly airtight transportation container. That is, the lid 8 is provided with the concave locking portion 10 on the outer peripheral edge thereof, and the concave locking portion 10 is provided on the entire circumference so as to face the flange 6 of the container body 2 shown in FIG. It is formed over. The concave locking portion 10 is provided with the inner wall 13
And an outer side wall body 14, and an inner projection 1 for firmly locking the flange portion 6 on the inner peripheral surface of the wall body 14.
8 is formed.

The lid 8 is previously filled with the liquid packing made of the above-mentioned adhesive resin as the seal member 27 in the concave locking portion 10. Such a seal member 2
7 is made of, for example, a styrene resin, and has an appropriate adhesive force. On the other hand, a projecting body 29 is formed on the top surface 6a of the flange portion 6 of the container body 2 over the entire circumference. As shown in FIG. 2 (B), the projecting body 29 has the sealing member 27 when the cover body 8 is completely covered.
Abut the outer surface of. Then, a part of the sealing member 27
It is bitten inside.

The projection 29 is not particularly limited in shape, and may be, for example, a large number of small projections 33 scattered on the top surface 6a as shown in FIG. 3, or as shown in FIG. As described above, the protrusion 35 that is substantially parallel to the inner peripheral edge 6b of the flange portion 6
May be In addition, when providing the protrusion 35 in the flange part 6, it is sufficient that at least one is formed over the entire circumference of the flange part 6, but a plurality of them may be formed in parallel and at substantially equal intervals. . In addition, these projecting bodies 2
9 can be easily formed by graining or the like.

In addition to the top surface 6a of the flange portion 6, such a projecting member 29 is provided in the concave locking portion 10 of the lid body 8 as shown in FIGS. 5 (A) and 5 (B). The ceiling surface 15 can be similarly provided. In this way, if the projecting body 29 including the small projection 33 or the ridge 35 is provided on the flange 6 and the lid body 8, the sealing member 27 is fitted when the lid body 8 is fitted.
Since it penetrates into the inside, the contact area of the seal member 27 with the sealed portion becomes larger, so that the sealing performance can be further improved. Further, of course, it does not move as in the case of using the rubber packing.

If the projecting body 29 is provided on the lid body 8 side,
The sealing property with the lid body 8 side is improved similarly to the case of the flange portion 6. When the protruding body 29 is provided on the lid body 8, it is preferable that the protruding body 29 is formed at a position where it does not collide with the protruding body 29 provided on the flange portion 6. In this way, since the seal member 27 is sandwiched between the lid body 8 and the container body 2,
The sealing property becomes extremely good. Therefore, the sealing property can be exhibited without filling a large amount of liquid packing. Further, since the protruding body 29 improves the adhesion of the liquid packing, the sealing property of the lid 8 can be further improved. Furthermore, even if a large force is applied from the outside like in the case of a fall due to a shock or the like, the sealing performance is not impaired.

Although one embodiment of the present invention has been described above, the present invention is not limited to the above embodiment. For example,
In the above-mentioned embodiment, the example in which the liquid packing is used as the seal member 27 is shown, but it is of course applicable to the case where the usual rubber packing is used. In addition, in the above-described embodiment, the example in which the projecting body 29 is provided on the top surface 6a of the flange portion 6 and the ceiling surface 6a of the lid body 8 has been shown.
9 may be provided on at least one side.

Further, the shape of the protruding body 29 is not limited to a rectangular parallelepiped, and various shapes can be adopted. In addition, in the above-described embodiment, the rectangular tube-shaped container body 2 is illustrated, but it is of course applicable to a cylindrical container.

[0019]

As described above, according to the lid sealing structure of the carrying container of the present invention, it is possible to improve the sealing property when the lid body filled with the liquid packing is put on the container body. . It is also possible to keep the filling amount of the liquid packing small. Therefore, even if it is a single-use transport container that does not have to be re-closed, such as a transport container for treating medical waste, it can always exhibit a stable sealing property. It is cheap.

[Brief description of drawings]

FIG. 1 is a perspective view of a container body to which a lid is attached by a sealing structure according to an embodiment of the present invention.

FIG. 2 (A) is a sectional view showing the sealing structure according to the same embodiment in the middle of fitting, and FIG. 2 (B) is a sectional view showing a state where the sealing structure according to the same embodiment is completely sealed. It is a figure.

FIG. 3 shows an example of a projecting body applied in the present invention.
It is a perspective view of the flange part which showed the small protrusion.

FIG. 4 is a perspective view of a flange portion showing a ridge as an example of another projecting body applied in the present invention.

FIG. 5 shows another embodiment of the present invention.
FIG. 5A is a sectional view when a lid is provided with a projecting body made of small protrusions, and FIG. 5B is a sectional view when a lid is provided with a projecting body made of a protrusion.

FIG. 6 is a partially cutaway front view of a conventional container body.

7 (A) is a cross-sectional view showing a conventional sealing structure during fitting, and FIG. 7 (B) is a cross-sectional view showing a state in which the conventional sealing structure is completely sealed. is there.

[Explanation of symbols]

2 container body 4 openings 6 Flange 6a Top surface 6b inner peripheral edge 8 lid 10 Recessed locking part 27 Seal member 29 Projected body 31 Small protrusion 35 ridges

   ─────────────────────────────────────────────────── ─── Continued front page    F-term (reference) 3E084 AA05 AA14 AA24 AB10 BA01                       CA03 CC03 DA03 DB13 DC03                       FA09 FC13 FD02 GA08 GB12                       GB13 HA03 HB03 HC10 HD01

Claims (4)

[Claims] 1. A concave locking portion (10) formed on an outer peripheral edge of a lid body (8) so as to cover a flange portion (6) provided in an opening portion (4) of a container body (2). By fitting, the seal member (27) in the concave locking portion (10)
Is closely attached to the flange portion (6) and the opening portion (4)
A sealing structure of a lid in a transport container for sealing a ceiling surface (1) inside the concave locking portions (10) facing each other.
5) and the top surface (6a) of the flange portion (6), at least one of which is provided with a projecting body (29). 2. The structure for sealing a lid in a transport container according to claim 1, wherein the seal member (27) is a liquid packing. 3. The projecting body (29) is a small projection (33).
The small projection (33) is formed on the top surface (6a) of the flange portion (6) over the entire circumference thereof. Sealing structure. 4. The projecting body (29) is a ridge (35) substantially parallel to the inner peripheral edge of the flange portion (6), and the ridge (35) covers the entire flange portion (6). At least one cover is formed over the circumference, and the lid sealing structure for a transport container according to claim 1, wherein the cover is sealed.