JPS6244928Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an airtight container, and particularly to an airtight container that is sealed with a lid using a sealing O-ring.

The airtight container of the present invention includes a container body, a lid that closes an opening of the container body, a sealing O-ring inserted between the container body and the lid, and an O-ring provided on at least one of the container body and the lid. It consists of a groove for accommodating the ring, and is characterized in that a part of the groove has a wide part.

The airtight container of the present invention will be explained below with reference to the drawings.

1 and 2 show a closed container, 1 is the main body, 2 is the lid, and A is the interface between these. The entire circumference of this boundary surface A is a surface that requires airtightness, and when trying to obtain this airtightness with the O-ring 3, conventionally, a groove 4 of a size approximately equal to the cross-sectional diameter of the O-ring 3 used, Process the entire circumference of the boundary surface A of the main body 1 or lid 2, and set the O-ring 3 in the groove 4 so that a part of the upper cross section of the O-ring 3 slightly protrudes from the boundary surface A. Usually, the container is then pressurized with a lid 2 to obtain airtightness.

The following problems arise in such a closed container.

(1) When using standard O-rings, there is a variation of around 1% in circumference even for products of the same size, so even if the circumference of the groove is precisely machined, the O-ring
There are many cases where the ring cannot be set. That is, O
If the circumference of the ring is too long, part of it will protrude from the groove, and if it is too short, part of it will not fit into the groove.

(2) Once the O-ring is set in the groove, it is impossible to remove it by hand, and if you use a tool to remove it, do not damage the sealing surface of the container or lid or the surface of the O-ring. You may end up attaching it.

In the present invention, in order to solve the above problems, the width of the groove portion 4a on the circumference of the groove 4 is expanded outward in the diametrical direction, as shown in FIG. Make it several times the cross-sectional diameter of the O-ring 3.

Since the airtight container of the present invention has the above-described structure, the enlarged groove portion 4a can absorb variations in the circumferential length of the O-ring, and since a finger can fit into the groove portion 4a, it is easy to attach and remove the O-ring. There is a huge benefit in that it becomes easier.

In the above embodiment, the groove 4 is provided in the lid, but it goes without saying that in other embodiments of the present invention, the groove 4 may be similarly provided in the main body or in both the main body and the lid. be.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of the sealed container, FIG. 2 is a side view thereof, FIG. 3 is a front view of the lid of the sealed container of the present invention, and FIG. 4 is a longitudinal sectional side view thereof. 1...Body, 2...Lid, 3...O-ring, 4
...Groove, 4a...Groove portion, A...Boundary surface.

Claims (1)

[Scope of utility model registration request] A container body, a lid that closes the opening of the container body, and a sealing O inserted between the container body and the lid.
An airtight container comprising a ring and a groove for accommodating the O-ring provided in at least one of the container body and the lid, and a part of the groove has a wide portion.