JPH0443489Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a sealing structure for the mouth of a container, which makes the inside of the container airtight by covering the mouth of the container with a cap.

[Conventional technology]

Generally, when powdered chemicals or the like are stored airtight in a container, a bottle-shaped container made of a material such as glass or plastic is used.

Such containers are constructed so that when the cap is placed over the mouth of the container, a seal is formed between the cap and the mouth.

Conventionally, this type of sealed structure has been known to have a structure in which an inner lid made of a synthetic resin material such as polyethylene is fitted into the mouth of the container, and a screw-type cap is placed over the inner lid to cover the mouth of the container. .

These sealing structures seal the inside of the container by fitting an inner lid into the container mouth, and by placing a cap over the container mouth into which the inner lid is fitted, the edge of the inner lid is connected to the container mouth and the cap. This prevents the inner lid from coming off from the container mouth.

This sealed structure is used when storing powder such as medicine in a container, and by using this sealed structure, the powder in the container can be stored airtight.

[Problem that the invention attempts to solve]

However, while these sealed structures can maintain sufficient airtightness within the container, they have the following problems that need to be solved.

In other words, since these sealed structures use screw-in caps, it takes time to attach and detach them, and this poses a problem in that it impedes process automation.

[Means for solving problems]

In the present invention, grooves extending in the circumferential direction are formed in both the container opening and the opposing surfaces of the cap, and an engaging member that can be freely inserted into and removed from the other groove is inserted into one of the grooves, and the engaging member is inserted into one of the grooves. A first hollow body made of an elastic material that pushes out the engaging member into the other groove by introducing fluid into the groove is installed, and by introducing fluid into the inside of the cap, the engaging member is pushed out into the other groove. A second hollow body made of an elastic material is attached to both of the mouths, and a fluid supply source is connected to the first and second hollow bodies.

[Effect]

In the present invention, when fluid is introduced into the first hollow body from the fluid supply source, the first hollow body pushes out the engagement member, and the engagement member fits into the other groove. The cap is fixed to the container mouth,
Further, when the fluid is introduced into the second hollow body from the fluid supply source, the second hollow body contacts both the cap and the mouth of the container, thereby sealing the inside of the container.

〔Example〕

1 to 3 are diagrams showing a first embodiment of the present invention.

In these figures, reference numeral 1 is a mouth portion, and reference numeral 2 is a cap that closes the mouth portion 1.

The mouth portion 1 has circumferentially continuous grooves 4 and 5 formed on a circumferential surface 3 facing the cap 2, and a circumferentially continuous recess 6 at its upper end.

The cap 2 has a groove 8 opposite to the groove 4 and a groove 9 opposite to the groove 5 formed on an inner circumferential surface 7 facing the opening 1.

An engaging member 10 made of hard rubber and having a triangular cross section is fitted into the groove 8, and a tube 11 (first hollow body) is adhered to this engaging member.
In the groove 9, an engaging member 12 which is the same as the engaging member 10 is provided.
is inserted into the engaging member 12, and a tube 13 (first hollow body) is adhered to the engaging member 12.

The tubes 11 and 13 are hollow bodies made of a soft rubber material, and expand when fluid is introduced thereinto, and contract when the fluid inside is discharged.

The cap 2 has holes 16 and 1 that extend radially from the grooves 8 and 9 in plan view, communicate vertically inside the peripheral wall 14, and penetrate from the center of the vertical portion to the outer peripheral surface 15.
6... are formed at equal intervals in plan view.

A coupling ring 17 is inserted into the hole 16 from inside the groove 8.
is attached, and a coupling ring 18 is attached from inside the groove 9. Further, the tube 11 is attached to the coupling ring 17, and the tube 13 is attached to the coupling ring 18.

Further, a hole 19 is formed in the cap 2 and penetrates from a position on the inner circumferential surface 7 facing the recess 6 to the outer circumferential surface 15.

A coupling ring 20 is inserted into the hole 19 from the inner peripheral surface 7 side.
is attached, and the cap 2 is attached to the coupling ring 20.
An annular tube 22 (second hollow body) that contacts the inner upper surface 21 and the recess 6 is attached.

The tube 22 is a hollow body made of the same material as the tubes 11 and 13, and expands when fluid is introduced therein, and contracts when the fluid inside is discharged.

In addition, the holes 16 and 19 each have an outer circumferential surface 1
Piping material 24 connected to the liquid supply source 23 from the 5 side,
25 is installed.

To close the opening 1 with the cap 2, air is drawn from the liquid supply 23 through the tubes 11, 13 through the piping 24, the hole 16, and the couplings 17, 18.
to be introduced inside. In this way, the tubes 11 and 13 expand, the engaging members 10 and 12 are pushed out by the expanded tubes 11 and 13, and the engaging members 10 and 12 are fitted into the grooves 4 and 5. In this case, as the engaging members 10 and 12 fit into the grooves 4 and 5, the position of the cap 2 is corrected, and the cap 2
is fixed to the mouth part 1.

Meanwhile, simultaneously with the above operation, air is introduced into the tube 22 from the fluid supply source 23 through the piping material 25, the hole 19, and the coupling ring 20. In this way, the tube 22 expands and contacts both the recess 6 and the upper surface 21, thereby sealing the inside of the container.

When the cap 2 is opened from the opening 1, the air inside the tube 22 is exhausted, and the air inside the tubes 11 and 13 is also exhausted. In this case, the tube 22 first contracts and separates from the recess 6 and the upper surface 21, opening the inside of the container. Also, tubes 11 and 13 contract, and tube 1
The engaging members 10, 12 bonded to the tubes 1, 13 are drawn together by the contraction force of the tubes 11, 13, and the engaging members 10, 12 are separated from the grooves 4, 5.
In the manner described above, the cap 2 is opened from the mouth portion 1.

According to this sealed structure, by introducing and discharging the air inside the tubes 11 and 13, the cap 2 can be fixed and opened with respect to the mouth part 1 by remote control, and the air inside the tube 22 can be introduced and discharged. By doing so, the inside of the container can be sealed and opened by remote control.

4 and 5 are diagrams showing a second embodiment of the present invention.

The sealed structure of this embodiment differs from the sealed structure of the first embodiment in the following points. That is, in the sealed structure of this embodiment, the engaging portion for fixing the cap 2 to the mouth portion 1 is one step. Therefore, the engaging members 10a made of hard rubber are fitted into the grooves 8 formed in the cap 2, and the engaging members 10a are fitted into the grooves 4 formed in the mouth portion 1. A cap 2 is fixed to the mouth 1.

The above-mentioned engaging members 10a... are all bonded to the same annular tube 11a, and this tube 11a is connected to the only hole 16a through which air is introduced into the tube 11a. Also, this hole 1
Air valves 26 and 27 are attached to the outer circumferential surface 15 side of the hole 6a and the hole 19, respectively.

On the other hand, an indicator 28 is attached to the upper part of the cap 2 to confirm that the supply of air into the airtight tube 22 is completed.
A lock pin 29 is attached to the cap 2 to facilitate positioning when fixing the cap 2 to the mouth 1.

This lock pin 29 is connected from the inner circumferential surface 7 to the outer circumferential surface 1.
5 is fitted into a hole 30 penetrating through the hole 30. This hole 3
A spring 31 that presses the lock pin 29 toward the inside of the cap 2, and a nut 32 that adjusts the strength with which the spring 31 presses the lock pin 29 are fitted into the spring 31. This lock pin 29 is pressed by a spring 31 to cause its tip to protrude toward the inner circumferential surface 7 side, and this tip is fitted into a positioning recess 33 formed in the circumferential surface 3 of the mouth portion 1. ing.

According to this sealed structure, when the cap 2 is fixed to the mouth portion 1, the engaging member 10a is pressed against the entire circumference of the groove 4, and the tube 11a is pressed against the entire circumference of the groove 4.
Since the container is in contact with the entire circumference of the container, even if the airtight tube 22 is broken, the inside of the container can be kept airtight.

In this sealed structure, the locking engagement portion is usually one stage, but if necessary, it may be two or more stages.

Furthermore, the fluid used in the sealed structure of this invention is not limited to air, but may also be a gas such as an inert gas or a liquid.

[Effect of idea]

According to the present invention, a first hollow body is installed in one groove to push out the engaging member from one groove to the other groove by introducing fluid into the inside, and the liquid is introduced into the inside of the cap. By doing so, since the second hollow body that contacts both the cap and the container mouth is attached, the operation of closing the container mouth with the cap becomes easy, and process automation can be easily performed.

[Brief explanation of the drawing]

1 to 3 are diagrams showing a first embodiment of the present invention, in which FIG. 1 is a sectional view of the main part of the sealing structure of the container mouth, and FIG. External view of the container, Figure 3 is cross section A- in Figure 1.
FIG. 3 is a view of A viewed from the arrow direction. 4 and 5 are diagrams showing a second embodiment of the present invention, and FIG.
The figure is a cross-sectional view of the main part of the sealing structure of the container mouth, and FIG. 5 is a view of the cross section BB in FIG. 4 viewed from the direction of the arrow. DESCRIPTION OF SYMBOLS 1...Mouth, 2...Cap, 4, 5...Other groove, 8, 9...One groove, 10, 12...Engaging member, 11, 13...First hollow body (tube) ),
22...Second hollow body (tube), 23...Liquid supply source.

Claims (1)

[Scope of utility model registration request] In a container mouth sealing structure that makes the inside of the container airtight by covering the container mouth with a cap,
Grooves extending in the circumferential direction are formed in both the opening and the facing surface of the cap, an engaging member that can be freely inserted into and removed from the other groove is fitted into one of the grooves, and an engaging member is inserted into one of the grooves. A first hollow body made of an elastic material that pushes out the engaging member into the other groove by introducing fluid is installed, and by introducing fluid into the inside of the cap, the cap and the opening are connected. 1. A sealed structure for a container opening, characterized in that a second hollow body made of an elastic material is attached to both of the hollow bodies, and a fluid supply source is connected to the first and second hollow bodies.