JPH0449083Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a sealing plug for a fluid container containing a fluid such as a gas or a liquid. A needle core body having a core hole is inserted from above so as to penetrate through the cover wall plate of the sealing stopper that is press-fitted, and the fluid inside the container is guided to the outside through the core hole.

(Prior Art) Conventionally, this type of sealing plug A' has generally been installed on the side with a diameter slightly larger than the diameter of the plug insertion hole 2 provided at a suitable position in the upper wall plate portion 1 of the fluid container B, as shown in Fig. 2. A cylindrical upper opening having a peripheral wall part 3 is covered by a lid wall disc part 4 having a larger diameter than the side peripheral wall part 3, so that the peripheral edge of the upper wall disc part 4 is located outwardly from the side peripheral wall part 3. It is integrally molded from an elastic material such as rubber or synthetic rubber so as to form a protrusion 5 that protrudes from the side circumferential wall 3 of the sealing plug A' into the plug insertion hole 2 of the fluid container B. is inserted so that the lower surface 6 of the protruding part 5 is in pressure contact with the surface 7 of the wall plate part 1 of the container B, and the side peripheral wall part 3 and the surface 7 of the wall plate part 1 are in pressure contact with the stopper insertion hole 2 of the container B. The sealing plug is inserted so that the lower surface 6 of the protrusion 5 that comes into contact with pressure acts as a packing.
The fluid container B is sealed by A'.

(Problem to be solved by the invention) However, in the conventional method, if the sealing stopper A' becomes loose or when the needle core C used to lead the fluid inside the container B to the outside is removed, the stopper A'' floats up, weakening the packing effect, causing fluid leakage from the periphery of the plug insertion hole 2 of container B, and the fluid contained in container B is directly led out to the outside through the needle core. Therefore, there is a problem that the core hole of the needle core body becomes clogged when floating matter or foreign matter is mixed in the fluid.

(Means for Solving the Problems) The present invention solves the above-mentioned problems, and also provides a sealing plug for a fluid container into which a filtering device for filtering the fluid led out is inserted. Hereinafter, the present invention will be explained with reference to embodiments shown in the drawings.

(a) Structure From FIG. 3, the thickness of the upper wall plate part 1 whose upper end outer circumferential surface comes into pressure contact with the circumferential surface of the plug insertion hole 2 provided at the appropriate position in the upper wall plate part 1 of the fluid container B. A fitting peripheral wall part 8 has a height corresponding to , and a retaining protrusion part 9 having an arc-shaped cross section and projecting outward is provided around the lower edge of the fitting peripheral wall part 8,
The upper opening of the cylindrical side wall 12 has an outer circumferential surface 10 that slopes slightly inwardly and downwardly below the protrusion 9, and a filter insertion hole 11 inside. It has a disk shape with a larger diameter, has an inclined circumferential surface 13 whose lower surface is inclined outwardly and downwardly, and has a cylindrical protrusion 14 having a diameter smaller than the filter insertion hole 11 by an appropriate size in the center of the lower surface. , the whole is integrally molded and sealed with an elastic material such as rubber or synthetic resin so that the outer circumferential part thereof is covered by a cover wall plate part 15 having an annular groove 23 into which the upper end part of a filter device D (to be described later) is fitted. This constitutes a stopper A.

From FIG. 4, an opening 19 on one side of a pipe 18 of an appropriate length has an outer circumferential surface 17 with an outer diameter that can be press-fitted into the inner circumferential surface 16 of the filter fitting hole 11 of the sealing plug A.
is covered with a filtering net 20 of an appropriate mesh to constitute a filtering device D, and the sealing plug A and the filtering device D constitute a sealing plug of the fluid container of the present invention.

(b) Effect Next, the operation of the present invention will be explained with reference to FIG.

The filter device D is inserted into the filter device insertion hole 11 of the sealing plug A, with the filter net 20 facing downward, and the upper end of the pipe 18 is inserted into the annular groove 23, and the pipe 1
The filter D is inserted and fixed into the sealing plug A by press-fitting the circular protrusion 14 into the upper end opening of the part 8, and the filter D is inserted into the sealing plug A. Insert A from above the plug insertion hole 2 of the fluid container B,
If the retaining protrusion 9 is press-fitted so as to pass through the plug insertion hole 2, the upper end circumference of the protrusion 9 will be the upper wall plate portion 1 of the lower end periphery of the stopper insertion hole 2 of the container B. The fitting peripheral wall portion 8 is pressed against the lower surface and the peripheral surface of the plug insertion hole 2, and the inclined peripheral surface 13 on the lower surface of the peripheral edge of the lid wall plate portion 15 of the sealing plug body A is pressed into contact with the peripheral surface of the plug insertion hole 2. The sealing plug of the present invention seals the fluid container B by being press-fitted so as to be in pressure contact with the surface 7 of the upper wall plate portion 1 around the upper edge of the insertion hole 2.

When taking out the fluid contained in the fluid container B sealed by the sealing plug, use the core hole 2.
1 through the lid wall plate part 15 of the sealing stopper A, and open the tip opening 22 of the core hole 21 into the pipe 18 of the filter D. The fluid inside passes through the filtering net 20 and passes through the needle core C.
is led out to the outside through the core hole 21 of.

When the needle core C is removed from the sealing plug A, the hole is closed by contraction, and fluid is prevented from leaking out through the hole.

(Effects) The sealing plug A of the present invention having the above-described configuration and function is integrally molded from an elastic material such as rubber or synthetic resin, so that the fluid container B
The sealing plug of the present invention is easily press-fitted into the plug insertion hole 2, and the sealing plug of the present invention fixed to the container has a protrusion 9 to prevent it from coming off.
The upper end periphery, the outer periphery of the fitting peripheral wall part 8, and the inclined surface 13 of the lower periphery of the lid wall board 15 are respectively the lower end periphery, the inner periphery of the plug insertion hole 2 of the fluid container B, Since it presses against the surface 7 of the upper wall plate 1 around the upper end edge and acts as a packing, the fluid container B is completely sealed, and there is no possibility of the sealing stopper coming up from the container B or the needle core. Loosening of the sealing stopper due to the withdrawal of the needle core body C is prevented by the retaining protrusion 9, and the hole caused by the withdrawal of the needle core body C is automatically closed by the shrinkage of the circumferential portion, so that the container B cannot be removed. The fluid will not spill even if the container is knocked down, and even if floating matter or foreign matter is mixed in the fluid contained in the container, when the fluid is led out to the outside by the needle core C, the fluid will pass through the filtering net 20. Since the core hole 21 is filtered by the filter, there is no risk of clogging the core hole 21, and this has excellent practical effects.

[Brief explanation of drawings]

FIG. 1 is a vertical cross-sectional view of the circumference of the plug insertion hole of the fluid container, FIG. 2 is a vertical cross-sectional view of a conventional sealing plug, and FIG. 3 is a vertical cross-sectional view of the sealing plug of the present invention. FIG. 4 is a longitudinal cross-sectional view of the filter device of the present invention, and FIG. 5 is a longitudinal cross-sectional view of the present invention. A...Sealing stopper, B...Fluid container, D...
... Filtering tool, 2 ... Plug insertion hole, 8 ... Fitting peripheral wall part,
9...Protruding strip for retaining, 10...Outer circumferential surface.

Claims (1)

[Scope of utility model registration request] The outer circumferential surface of the upper end forms a fitting circumferential wall part 8 that presses against the stopper fitting hole 2 of the fluid container B, and the retaining protrusion 9 has an arcuate cross-section and projects outward from the lower circumferential edge of the fitting circumferential wall part 8.
An outer circumferential surface 10 is provided below the protrusion 9 and is inclined slightly inwardly and downwardly, and a filter insertion hole 1 is provided inside.
1, the upper opening of the cylindrical side wall 12 is
It has a disc shape with a larger diameter than the side peripheral wall portion 12, the lower surface of the peripheral edge has an inclined peripheral surface that slopes outward and downward, and a cylindrical shape with an appropriate diameter smaller than the filter insertion hole 11 is provided in the center of the lower surface. Lid wall plate part 1 having a protrusion 14 and an annular groove 23 for fitting the upper end of the filter on the outer circumference thereof.
a sealing stopper A integrally formed of an elastic material such as rubber or synthetic resin so as to be covered by 5;
A filtering device in which one side opening 19 of a pipe 18 of an appropriate length having an outer diameter that can be press-fitted into the filtering device insertion hole 11 of the sealing plug A is covered with a filtering net 20 of an appropriate mesh. The filter D is press-fitted into the filter fitting hole 11 of the sealing plug 11 with the filter net 20 facing downward, and the filter D can be freely inserted into and removed from the sealing plug A. A sealing plug for a fluid container, characterized in that it is fixed.