JPS5924273Y2 - Liquid container closure device - Google Patents

Description

[Detailed description of the invention] The present invention relates to a closure device for a liquid container such as a thermos flask, and its purpose is to provide a structure with excellent durability and sealing performance in the closure device for a liquid container. be.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, liquid container closure devices according to embodiments of the present invention will be described with reference to the accompanying drawings.

FIG. 1 shows a first embodiment of the present invention, in which reference numeral 1 is a container body, 2 is an outer case, 3 is a lower mouth member attached to the upper part of the outer case 2, 4 is a plug body, and 5 is an inner container. are shown respectively.

The lower opening member 3 is formed with a plug screwing port 6 in the center and a water injection lower on one of the outer peripheries.

A female thread 8 for screwing the plug body 4 is formed on the inner periphery of the plug threading hole 6, and a plug insertion hole 9 communicating into the inner container 5 is formed at the bottom.
is formed.

The upper end of the inner container 5 is in contact with the lower surface of the mouth edge 10 of the plug insertion hole 9 via a sealing member 11 .

The plug body 4 includes a plug body 12 made of synthetic resin and a plug body 12 made of synthetic resin.
It is composed of a stopper cover 13 made of stainless steel that covers the lower part, and a lid 14 made of synthetic resin that covers the top surface of the stopper body 12.

The plug main body 12 is formed into a substantially cylindrical shape, and a male screw 15 is formed on its outer periphery to be screwed into the female screw 8 of the plug screw opening 6 of the lower mouth member 3.

Further, an inward flange 12C is integrally provided on the lower end of the stopper body 12, and an outward flange 13a integrally provided on the upper end of the stopper cover 13 is engaged with the inward flange 12C. It has been stopped.

A claw piece 28 is integrally protruded from the outer edge of the outward flange 13a, and by force-fitting and clamping the claw piece 28 onto an annular projection 25 protruding from the inner peripheral surface of the plug body 12, the plug is closed. The main body 12 and the stopper cover 13 are combined.

This makes it extremely easy to assemble the stopper body 12 and the stopper cover 13.

The stopper cover 13 is a portion exposed to the inner container opening 5a side when the stopper is closed.

An annular packing 19 is interposed at the joint between the stopper body 12 and the stopper cover 13.

The annular packing 19 includes a flange 19a which is clamped and fixed between the inward flange 12C and the outward flange 13a and has the function of airtightly closing the joint between the two, and a flange 19a which is inserted into the stopper when the stopper is closed. It is provided with an annular seal portion 19b that comes into contact with the mouth edge 10 of the hole 9 to maintain airtightness.

In addition, the code|symbol 20 has shown the heat insulating material filled in the plug main body 12.

FIG. 2 shows a second embodiment of the present invention.
A pinching method is adopted.

That is, an engagement step 26 is formed on the upper surface of the inward flange 12C, and the outer flange 13a of the stainless steel stopper cover 13 and the collar 19 of the annular packing 19 are formed on the engagement step 26.
After engaging the lid 14, the lid 14 is clamped by a pressing member 27 that projects integrally with the lower surface of the lid 14.

Next, the effects of the liquid container closure device of the present invention will be listed below.

That is, according to the present invention, (1) the plug body 4 is connected to the plug body 12 made of synthetic resin;
and a plug cover 13 made of a heat-resistant material to cover the lower part of the plug body 12, and an outward flange 13a projecting from the upper end of the plug cover 13 is locked and fixed onto the inward flange 12C, which projects from the lower end of the plug body 12. As a result, even though the stopper body 4 is composed of two members made of different materials, the two members can be easily and firmly connected. The flange 19a and the mouth edge 10 of the plug insertion hole 9 are clamped and fixed between the facing flange 12C and the outward flange 13a.
Since the annular packing 19 having an annular seal portion 19 b that comes into contact with the plug is provided, the sealing of the plug connecting portion and the sealing of the plug insertion hole 9 when closing the plug can be performed reliably with one member. , and other practical effects.

[Brief explanation of the drawing]

FIG. 1 is a top vertical sectional view of a liquid container using a closure device according to a first embodiment of the present invention, and FIG. 2 is a semi-vertical front view of a liquid container closure device according to a second embodiment of the present invention. be. 3... Lower mouth member, 4... Plug body, 9...
...Bung insertion hole, 10... Mouth rim, 12...
...Bung body, 12C...Inward flange, 13...Bung cover, 13a...Outward flange, 19...Annular packing, 19a・
...Brim part, 19b... Annular seal part.

Claims (1)

[Scope of utility model registration request] The plug body 4 that opens and closes the plug insertion hole 9 of the lower mouth member 3 is constituted by a plug body 12 made of synthetic resin and a plug cover 13 made of a heat-resistant material that covers the lower part of the plug body 12.
An outward flange 13a projecting from the upper end of the stopper cover 13 is fixed onto an inward flange 12C projecting from the lower end of the stopper cover 13. Flange 12 C outward flange 1
3 a and a ring-shaped seal portion 19 b that abuts against the mouth edge 10 of the plug insertion hole 9;
A closure device for a liquid container, characterized in that an annular gasket 19 having an annular gasket 19 is interposed therebetween.