JP3102305B2 - Sealed container - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sealed container suitable for storing various substances and storing or transporting the same.

[0002]

2. Description of the Related Art In a conventional sealed container of this kind, a flange provided at an open end of a bottomed cylindrical can and an outer peripheral edge of a lid attached to close the open end are provided. By interposing an annular flat gasket whose inner diameter is larger than the inner diameter of the cylindrical can and whose outer diameter is smaller than the outer diameter of the flange, by bolting it to the flange together with the lid at a plurality of locations, A method of fixing a lid to a cylindrical can was employed.

[0003]

According to this method, in order to secure a predetermined sealing performance while guaranteeing a specified gasket design surface pressure according to the strength of the flange portion and the lid, the tightening torque of the bolt is reduced. Before transporting the container, it was necessary to adjust and manage each bolt in advance. In one example, the number of tightening bolts is 12 per container. However, in an example in which 252 containers are transported by one transport, 3024 bolts are tightened while controlling the torque. Was enormous. At the time of tightening, it is necessary to control so that the bolt hole of the lid, the bolt hole of the gasket, and the bolt hole of the container flange portion match, and this also consumes time. As described above, a large amount of time and labor is required for closing and opening the container during transportation.

If the flat gasket used is not a JIS standard product, it is necessary to consider quality control when purchasing the gasket. In addition, the bolts, which are important parts for sealing, are inevitably worn due to repeated use. Therefore, even if the tightening torque is controlled, it must be replaced and replaced after a certain number of uses. .

The present invention has been made in view of the above-mentioned problems of the conventional system, and has as its object to eliminate the necessity of using a large number of bolts and necessitating the management associated with bolt tightening. Another object of the present invention is to provide a sealed container that can open and close the container quickly and easily without requiring any alignment with the flange portion of the gasket.

[0006]

In order to achieve the above object, a sealed container according to the present invention comprises a container body having a step formed on an inner peripheral wall of an open end, and a step formed to close the open end. a lid forming an annular groove on the outer peripheral surface can be placed on the part, consist the O-ring type gasket which is fitted in the annular groove, when placing the lid on the stepped portion,
Sealed containers the outer peripheral portion of the O-ring gasket is configured to seal fit wearing state is maintained between the outer peripheral surface and the inner peripheral surface of the container body of the lid in tight contact with the wall surface of the stepped portion
Container, on the inner peripheral wall of the opening end above the stepped portion
An annular groove is formed, and can be fitted into the annular groove and is outside the lid.
It has a width that can cover the joint between the peripheral surface and the wall surface of the step portion
At least three arcs, said at least three arcs
When the arc-shaped body is fitted into the annular groove,
To form a ring-shaped body for covering at least one
Arcs can be fixed to each other adjacent arcs
It is characterized by comprising.

[0007]

[0008]

When the O-ring type gasket is fitted into an annular groove formed on the outer peripheral surface of the lid, the outer peripheral portion of the O-ring projects slightly outward from the outer peripheral surface of the lid. In this state, when the lid is pressed into the step formed in the container main body, the lid is placed on the step, and a slight gap generated between the outer peripheral surface of the lid and the wall surface of the step is O. It is sealed by the outer periphery of the ring type gasket. As a result, the open end of the container body is sealed, and the lid is fitted to the step portion via the O-ring type gasket.

In this state, if necessary, two of the three arc-shaped members having the same shape are fitted into an annular groove formed above the stepped portion, with one ends thereof being adjacent to each other. Next, 2
One remaining arc is inserted into the annular groove between the other ends of the two arcs. Finally, this one
Both ends of the two arcs and the other ends of the two arcs are integrally connected by bolts. Thus, the fitted and sealed state between the lid and the step is firmly maintained by the three arcs.

In opening the lid, the three arc-shaped members are separated by removing bolts, separated from the annular groove, and the lid is lifted against the fitting force between the O-ring type gasket and the step portion wall surface. Is performed.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail based on one illustrated embodiment. 1 is a central longitudinal sectional view of the sealed container, FIG. 2 is a plan view of the sealed container, FIG. 3 is a sectional view taken along line III-III of FIG. 1, FIG. 4 is an exploded perspective view of three arc-shaped members, and FIG. It is a perspective view which shows the connection state of three arc-shaped bodies.

In the drawing, reference numeral 1 denotes a stepped portion 1a on the inner peripheral wall at the opening end.
A cylindrical container body 2 having a bottom and an annular groove 1b can be placed on the stepped portion 1a and has a small gap between the thickness corresponding to the height of the wall surface 1a 'of the stepped portion and the wall surface 1a'. And a cover 3 having an annular groove 2a formed on the outer peripheral surface thereof. The lid 3 is fitted in the annular groove 2a. O-ring type gaskets 4, 5, and 6 whose thickness is selected so as to protrude into the annular groove 1 b when connected (see FIG. 5), and the outer diameter of the lid 2. 3 are three arcs formed to have a smaller inner diameter.

Two of the three arcs 3, 4, 5 are symmetrical as shown in FIG. 4, and one end 4a, 5a is formed to be connectable. The other end portions 4b and 5b have end surfaces 4b 'and 5 formed so as to be parallel to each other when the arc members 4 and 5 are connected.
It has a triangular shape including b '. Screw holes 4 'and 5' are formed near the apexes of the respective triangular portions.
The two end faces 6a, 6b of the remaining one arc-shaped body 6 are formed so as to be aligned with the end faces 4b ', 5b' when the arc-shaped bodies 4, 5 are connected. , Through holes 6a 'and 6b' are formed in alignment with the screw holes 4 'and 5'. Reference numeral 7 denotes a bolt inserted through the through hole 6a 'and screwable into the screw hole 4', and reference numeral 8 denotes a bolt inserted through the through hole 6b 'and screwable into the screw hole 5'.

Since the hermetically sealed container according to the present invention is constructed as described above, when the lid is closed, the lid 2 is stepped with the O-ring type gasket 3 fitted in the annular groove 2a of the lid 2. 1
By simply pushing the container a, the inside of the container body 1 can be maintained in a sealed state.

When the container body 1 is transported while maintaining this sealed state, or when the substance stored in the container body is exothermic or fermentable, the pressure in the container may rise abnormally. In such a case, first, the arc-shaped members 4 and 5 are slid on the lid 2 so that the end portions 4 are fitted into the annular groove 1b.
a and 5a are brought into contact with each other to make them connected. Next, the arc-shaped body 6
Is similarly slid on the lid 2 to form the end faces 4 of the arcs 4 and 5.
While being inserted between b 'and 5b', it is fitted into the annular groove 1b. At this time, the through hole 6a 'is connected to the screw hole 4' and the through hole 6b '.
Are aligned with the screw holes 5 ', respectively, so that the bolt 7 is inserted into the through hole 6a' and the bolt 8 is inserted into the through hole 6b ', and screwed into the screw holes 4' and 5 ', respectively. , 5 are arc-shaped bodies 6
Are integrated.

Therefore, the arc-shaped members 4, 5, and 6 never escape from the annular groove 1b, and always have a small gap between the outer peripheral surface of the lid 2 and the end surface 1a 'of the step portion 1a. In addition to covering the portion, the sealed state by the lid 2 can be maintained under any circumstances.

In order to open the lid 2 from this state, the bolts 7 and 8 are first loosened to release the joined state of the arcs 4, 5 and 6, and then the arc 6 is slid on the lid 2 while the lid 6 is slid on the lid 2. After being pulled out toward the center of the body, the arc-shaped bodies 4 and 5 are similarly drawn out, and the arc-shaped bodies 4, 5 and 6 are removed from the lid, an appropriate grip (not shown) provided on the lid 2 is provided. Through means,
This can be easily performed by lifting the lid 1 against the fitting force between the O-ring type gasket 3 and the step portion wall surface 1a '.

As is clear from the description of the embodiment, the number of arc-shaped members is not limited to three, and it may be practically convenient to divide the arc-shaped member into four or more depending on the diameter of the container body. Needless to say. Also, in the embodiment,
Although the container body 1 has been described as having a cylindrical shape, the container body 1 may be square and may be suitably used by appropriately deforming or modifying the shape of the arc-shaped body.

[0019]

As described above, according to the present invention, not only can a sealed container whose lid can be opened and closed by an extremely simple operation be provided, but also a sealed state which is always reliable according to the purpose of use or the characteristics of the stored material. Can be provided. Further, according to the present invention, all of the lid, the arc-shaped body for fixing the lid, and the bolt for connecting the arc-shaped body are located at a position lower than the top surface of the container main body, so that they can be stably stacked. Also, a convenient sealed container can be provided.

[Brief description of the drawings]

FIG. 1 is a central longitudinal sectional view of one embodiment of a sealed container according to the present invention.

FIG. 2 is a plan view of the sealed container shown in FIG.

FIG. 3 is a sectional view taken along line III-III in FIG.

FIG. 4 is an exploded perspective view of the lid-fixing arc.

FIG. 5 is a perspective view showing a connected state of the lid fixing arc-shaped body.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Container main body 1a Step part 1a 'Wall surface 1b, 2a Annular groove 2 Lid body 3 O-ring type gasket 4, 5, 6 Arc-shaped body 4a, 4b, 5a, 5b End part 4b', 5b ', 6a, 6b End surface 4' , 5 'Screw hole 6a', 6b 'Through hole 7, 8 bolt

Claims (1)

(57) [Claims] A container body having a step formed on an inner peripheral wall of an open end; a lid having an annular groove formed on an outer peripheral surface thereof, which can be placed on the step to close the open end; And an O-ring type gasket fitted in the annular groove,
When the lid is placed on the step, the outer peripheral portion of the O-ring type gasket is in close contact with the wall surface of the step and is sealed between the outer peripheral surface of the lid and the inner peripheral surface of the container body. A sealed container configured to maintain a fitted state , wherein an annular groove is formed in an inner peripheral wall of the open end above the stepped portion.
The outer peripheral surface of the lid can be fitted into the annular groove and
At least having a width that can cover the joint with the wall surface of the difference portion
Three arcs, wherein the at least three arcs are forward
A ring that covers all of the joints when fitted in the annular groove
And at least one arc is adjacent
It is configured so that it can be fixed to each other
A sealed container .