JPH0647160U - Gas exhaust plug - Google Patents

Abstract

(57) [Abstract] [Purpose] The present invention has an inner plug having an opening, a spring member and a movable plug that are fitted to the inside of the overcap by a shaft plug to improve the exhaust efficiency of gas generated in the container. (EN) Provided is a gas exhaust plug body having a high sealing property and a tight sealing property so that the stored contents do not leak. A stopper body comprising an inner stopper having an opening fitted into a container mouth and an overcap for sealing the container mouth, wherein a plurality of exhaust holes are provided on an upper side surface of the overcap, A gas exhaust plug body having a structure in which a movable valve having a spring member and an insertion hole is provided at the center, and a shaft plug having a ventilation groove is inserted into the insertion hole at the center of the movable valve.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a gas exhaust port stopper that prevents a plastic bottle or a paper container from increasing in pressure beyond the limit due to the gas generated by the contained contents.

[0002]

[Prior art]

 2. Description of the Related Art Conventionally, a gas outlet container stopper for adjusting a pressure in a container by a gas generated from a stored content has been used in various applications. To give an example, a poly tank containing a bleaching agent such as hypochlorous acid, which generates chlorine gas or hydrochloric acid gas, has a gas exhaust plug with a bubble and a valve made of a flexible film. Japanese Unexamined Patent Publication No. 2-269666 proposes a gas exhaust plug that repeatedly expands and seals by adjusting the pressure inside the container by utilizing the expansion and contraction of the bubble due to the gas pressure.

[0003]

[Problems to be solved by the device]

 However, the gas exhaust plug described above has a low gas exhaust efficiency because the force of the foam provided on the valve seat against the flexible film is weak, and the liquid film is made of a flexible film. Deficiencies in stopping were seen, and these improvements were required. In view of this, the present invention uses a spout having a gas exhaust function that is configured by fitting a spring member, a movable valve, and a shaft plug having an exhaust groove formed inside the overcap to increase the gas exhaust efficiency. (EN) Provided is a gas exhaust plug body having a tightly sealed property so that the stored contents do not leak.

[0004]

[Means for Solving the Problems]

 In order to solve the problems, the present invention relates to a stopper body (20) including an inner stopper (11) having an opening (11a) fitted in a container mouth and an overcap (10) for sealing the container mouth. ), The overcap is provided with a plurality of exhaust holes (18, 18) on the upper side surface, and a movable valve (12) having a spring member (13) and an insertion hole (S) in the inner center part. A shaft plug (15) having a ventilation groove (17, 17) is inserted in the insertion hole (S) in the center of the movable valve, and the overcap (10) is screwed into the mouth of the container. By doing so, the movable valve seals the opening portion (11a) of the inner plug (11). Further, the spring member (13) between the overcap and the movable valve is always composed of a spring which urges the movable valve below the opening of the inner plug.

[0005]

[Action]

 As shown in FIG. 1, the gas discharge plug of the present invention is stronger than the force of the spring member (13) that biases the gas pressure when the gas contained in the space inside the container is filled. Then, the movable valve (12), which had been pressed downwards in the opening (11a) of the inner plug (11), was pushed upward with the shaft plug (15) as the axis, and the ventilation grooves (17, 17) were opened. When rising up to the point where it is formed, the gas passes through the ventilation groove, accumulates in the overcap, and is automatically discharged from the exhaust holes (18, 18) provided on the side surface of the cap. Further, when the gas is discharged, the force of the biasing spring member prevails and the movable valve is pushed toward the lower part of the inner stopper opening, and the protrusions (T, T) of the inner stopper (11) and the shaft stopper (15 ) To the base (15a).

[0006]

【Example】

 An embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a cross-sectional view of a gas exhaust plug attached to the mouth of a container body according to an embodiment of the present invention. The gas exhaust port stopper (20) of the present invention comprises a fitting protrusion (10a) in the center of the top, an exhaust hole (18, 18) in the upper side, and a screw part in the lower inner periphery. It consists of an overcap (10) and a cylindrical inner plug (11) with an opening (11a) in the center.The overcap has a metal or plastic spring member (13). A spiral spring, a movable valve (12) having an insertion hole (S) in the center, and a gas exhaust mechanism by a shaft plug (15) supporting the movable valve are provided. As these materials, the overcap (10) is preferably a resin material having excellent rigidity such as polypropylene, and the inner plug (11) is preferably a polyolefin resin such as polyethylene having excellent chemical resistance. Furthermore, the movable valve (12) may be formed by adhering a polyethylene or polystyrene film or the like in addition to a foam molded product sheet such as polyethylene. Further, as the spring member, a resin member such as polypropylene or a spiral spring made of a metal material having high elasticity is optimal. The shaft stopper (15) for locking them is made of a resin material such as polypropylene as with the overcap.

As shown in FIG. 1, the gas exhaust plug (20) of the present invention has a fitting protrusion (10a) in the center of the top and a plurality of exhaust holes (18, 18) in the upper side surface. And injection molding an overcap (10) with a screw part on the inner peripheral edge of the lower side surface, and inserting a spiral spring (13) around the fitting protrusion (10a) inside this overcap, Put a disk-shaped movable valve (12) with an insertion hole (S) in the center from below the spring, insert the shaft plug (15) into the insertion hole from the outside of this movable valve, and attach the tip to the overcap. The spring and the movable valve are locked by fitting with the fitting protrusion. As a result, an overcap having a gas exhaust mechanism can be obtained.

As shown in FIG. 2 (A), the shaft plug (15) has a shaft standing upright at the center of a base (15a) supporting the movable valve (15), and a ventilation groove ( 17, 17) are provided and the front end is fitted to the fitting protrusion (10a) of the overcap. As shown in the sectional view of the shaft plug in FIG. 2 (B), the ventilation grooves (17, 17) have a plurality of grooves for gas ventilation, and the shape and the number are not limited to this. Since the movable valve moves up and down with the shaft plug as the axis, the outer peripheral edge of the ventilation groove is made into a cylindrical shaft so that it can slide easily. Here, the shaft plug (15) is not limited to the structure of the present embodiment, and is integrally hung from the top plate of the overcap (10) and has a shape in which the tip end thereof is slightly bulged ( (Not shown), but it is also possible to force-fit into the insertion hole (S) from above.

Further, as shown in FIG. 1, the inner plug of the gas exhaust plug (20) is provided with outer side walls (14, 14) at the outer peripheral edge thereof, and the liquid reservoir recesses (E, E) are provided therebetween. An inner wall (14a, 14a) is provided upright on the inner peripheral edge, and a cylindrical inner plug (11) is provided with a protrusion (T, T) at the lower end of the inner wall. Further, the inner diameter of the inner plug is made substantially equal to the diameter dimension of the movable valve (12), but the movable valve is allowed to move lightly up and down along the shaft plug by the pressure of gas. This inner plug (11) is fitted into the mouth of the container (16), and the overcap (10) fitted with the movable valve (12) is fitted from above and screwed into the container, so that FIG. As shown in the figure, the movable valve is fitted inside the inner plug, the peripheral edge of the movable valve is supported by the protrusions (T, T), and the stopper (20) is urged downward by the spring. ) Is obtained.

The gas exhaust mechanism of this spout makes the surface area of the movable valve (12) as a valve seat as large as possible, and the internal pressure of the container increases due to the gas containing the volatile matter, and the spring is urged. And the movable valve is pushed up along the shaft stopper up to the part where the ventilation groove (17, 17) is formed, the sealed gas enters from this ventilation groove into the overcap, and It is discharged to the outside through the exhaust hole (18, 18) provided in the cap. Further, when the gas discharge is completed and the internal pressure becomes weak, the movable valve urged by the spring returns and seals the opening (11a) of the inside plug. At this time, the strength of the spring adjusts the spring elasticity of the spring depending on how much the internal pressure of the container due to the gas is maintained. Further, since the movable valve (12) moves up and down around the shaft stopper (15) inside the inner stopper (11), the material of the inner stopper, the shaft stopper and the movable valve can be easily moved. Selection and dimensional accuracy need to be accurate. In addition, it is necessary to use butylene rubber, etc., as a material for the material, because it is also necessary to have the sealing performance of a movable valve.

[0011]

[Effect of device]

 The gas exhaust plug of the present invention is a plug having a normal function that does not leak the stored contents, and in addition, it discharges the gas from the stored contents to stabilize the internal pressure in the container. Is. Moreover, the above-described gas exhaust function automatically exhausts and seals the spigot itself without human intervention. Further, the number of members constituting this spout is small, the manufacturing cost can be reduced, and excellent functions and effects can be obtained. In addition, this gas exhaust plug can be used not only for chemicals but also for various gas exhausts such as volatile substances and foods and for the purpose of preventing leakage of contents, and produces various excellent effects.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a gas exhaust plug attached to an opening of a container according to an embodiment of the present invention.

FIG. 2 is a sectional explanatory view (A) of the shaft stopper and a sectional view (B) of the shaft stopper.

FIG. 3 is a perspective view showing an example of an overcap according to an embodiment of the present invention.

[Explanation of symbols]

 10 ... Overcap 10a ... Fitting protrusion 11 ... Inner plug 11a ... Inner plug opening 12 ... Movable valve 13 ... Spring member (spring) 14 ... Outer side wall 14a ... Inner side wall 15 ... Shaft stopper 15a ... Shaft stopper base 16 ... Container Main body 17 ... Ventilation groove 18 ... Exhaust hole 20 ... Gas exhaust port plug E ... Liquid reservoir recess T ... Inner plug projection S ... Insertion hole

Claims (2)

[Scope of utility model registration request] 1. A plug body comprising an inner plug having an opening fitted in a container mouth and an overcap for sealing the container mouth, wherein the overcap has a plurality of exhaust holes on its upper side surface. A gas exhaust port plug characterized in that a movable valve having a spring member and an insertion hole at the center is provided in the inner central portion, and a shaft plug having a ventilation groove is inserted into the central insertion hole of the movable valve. 2. The gas exhaust port according to claim 1, wherein the spring member between the overcap and the movable valve is a spring that constantly urges the movable valve toward the opening of the inner plug. Stopper.