JPH0616571Y2 - Liquid container stopper - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a stopper for a liquid container such as a thermos bottle.

(Prior Art) Conventionally, this type of stopper has a cylindrical shape that fits into the mouth of the container body, has a valve and a spout, and internally forms a liquid flow path from the valve opening to the spout. There is something I did. In this device, when the valve is opened by an appropriate means and the container body is tilted, the liquid inside is poured out from the inlet through the liquid flow path inside the stopper from the pouring port.

(Problems to be solved by the invention) However, in the above-mentioned conventional stopper, since the liquid flows on the inner wall surface of the stopper, the streamline changes depending on the inclination of the container body, and the appearance from the spout deteriorates. was there.

Also, when the container body is rebuilt after pouring, the liquid near the spout randomly flows down the inside of the stopper and returns to the container body.
Some liquids sometimes stayed in the stopper when the stopper was closed.

The liquid that has accumulated in the stopper cools without being kept warm, and the next time it pours out, there is a problem that the pouring water becomes lukewarm and the container body collapses and leaks from the spout. It was

The present invention has been made in view of such problems, and an object thereof is to provide a stopper for a liquid container in which the flow line of the liquid is stable and the liquid does not stay inside.

(Means for Solving the Problems) In order to solve the above problems, the present invention relates to a stopper of a liquid container that fits in an opening portion of a container body and has a valve and an injection port, from the valve opening portion to the injection port. An inner wall that forms a substantially cylindrical liquid flow path with an inner surface of the plug body that forms the inner space from the valve opening side, and an inner wall that extends from the wall to the spout, And a guide wall that forms a groove-shaped liquid flow path with the inner surface of the.

(Embodiment) Next, an embodiment of the present invention will be described with reference to the accompanying drawings.

In FIG. 1, 1 is a thermos container body, and 2 is a stopper according to the present invention.

The container body 1 is a stainless steel vacuum double bottle, and a shoulder body 5 is attached to the mouth portion 4 by force fitting, and a body ring 6 is attached to the outer periphery.

On the inner surface of the shoulder body 5, a female screw 7 to which a male screw 39 of a stopper body 10 of the stopper 2 described later is screwed, and a step portion 8 to which a seal packing 38 is pressed are formed.

The stopper 2 generally includes a stopper body 10, a stopper cap 11, a valve body 12, an opening / closing operation member 13, and a protruding member 14.

The plug body 10 is formed in a cup shape, the upper end of which is covered with a plug cap 11 which will be described later, and a valve packing 16 is attached to an annular valve seat 15 provided on the outer surface of the bottom. Also,
On the inner surface of the bottom of the stopper body 10, a tubular valve body support portion 17 into which a valve body 12 described later is slidably fitted is formed integrally with the stopper body 10.

As shown in FIG. 2, the valve disc support portion 17 is vertically divided by a partition plate 18 at an internal intermediate position, and the partition plate 18
Further, a tubular valve rod support portion 19 through which a valve rod 42 of the valve body 12 described later is slidably inserted is provided so as to project upward. Shaft holes 20, 20 in the lower surface of the partition plate 18 and having a center line L which is a straight line passing through the axis of the valve body support portion 17 are formed in the side wall of the valve body support portion 17. . Therefore, this shaft hole 2
0 and 20 form grooves 21 and 21 having a semicircular cross section on the lower surface of the partition plate 18.

Then, as shown in FIG. 3, the valve body support portion 17 is provided so that the outer edge above the center line L of the shaft holes 20 and 20 and the inner edge below the center line L are flush with each other. A protrusion 22 is formed on the outer surface above the center line L, and a groove 23 is formed on the inner surface below the center line L in the longitudinal direction. A guide groove 24 having the same width as the diameter of the shaft hole 20 is formed in the protrusion 22 in the longitudinal direction, and an inclined surface 25 is formed near the shaft hole 20 at the lower end of the guide groove 24. There is. Also,
A ridge 26 is formed on the outer surface below the center line L so as to project further outward than the ridge 22, and the outer edge of the shaft hole 20 is extended to the upper end surface of the ridge 26 to form a semicircular cross section. The bearing portion 27 having a shape is formed.

At the bottom of the stopper body 10 and on the outer periphery of the valve body support portion 17,
As shown in FIG. 4, a substantially semicircular flow port 28 and a vent port 29 are provided at positions 180 ° apart from each other in a direction orthogonal to the center line L of the shaft hole 20. As shown in FIGS. 4 and 5, a half-pipe-shaped surrounding wall 30 is provided above the inlet 28 to the vicinity of the middle portion of the plug body 10. Further, guide walls 32, 32 for stabilizing the flow line are provided so as to branch from the upper end of the surrounding wall 30 to the left and right and reach the vicinity of the spout B on the upper end edge of the plug body 10.

Reinforcing ribs 33, 33 are projectingly provided on the sides of the surrounding wall 30 and the guide walls 32, 32 in the longitudinal direction, and the upper ends of the ribs 33, 33 are notches 40 (see FIGS. 1 and 7) of the cap 11 to be described later. ) Is engaged. Also, spouts B and 18
On the opposite side of 0 °, guide members 34, 34 and a stopper 35 for horizontally supporting the opening / closing operation member 13 described later are provided, and 36 is a reinforcing rib extending below the guide portions 34, 34. Is.

On the other hand, on the outer peripheral surface of the plug body 10, as shown in FIG.
A seal packing 38 is attached to the step portion 37, and a male screw 39 which is screwed with the female screw 7 of the container body 1 is formed above the seal packing 38.

As shown in FIGS. 1 and 7, the stopper cap 11 has a rectangular notch 40 into which an opening / closing operation member 13 to be described later is inserted, and has a substantially U-shaped planar shape. It is forcibly fitted.

The valve body 12 is, as shown in FIG.
A disc-shaped base portion 41 is pressed against the bottom of the base portion, and a cylindrical base portion 41 protruding upward from the center thereof is slidably fitted in the valve body support portion 17 in the vertical direction, and further protrudes from the upper end of the base portion 41. The provided valve rod 42 is slidably inserted into the valve rod support portion 19. Then, the coil spring 44 inserted outside the valve rod support portion 19 is pressed against the spring bearing 43 attached to the upper portion of the valve rod 42, and the valve body 12 is pressed upward, that is, in the direction in which it is pressed against the valve packing 16. It is biased and attached to.

The opening / closing operation member 13 is, as shown in FIGS. 1, 6, and 7, a cover 45 for closing the cutout portion 40 of the stopper cap 11.
A pressing portion 46 protruding from the outer surface of the cover 45; legs 48a and 48b protruding downward from both ends of the cover 45 in a gate shape and having shaft portions 47a and 47b at the lower ends;
It comprises a pressing piece 49 protruding in the center between a and 48b, and guide pieces 50a, 50b protruding on both sides of the pressing piece 49. As shown in FIG. 1, an inclined portion 51 and a concave portion 52 are formed at the tip of the pressing piece 49.

As shown in FIG. 6, the opening / closing operation member 13 has legs 48a, 48 on the plug body 10 before the plug cap 11 is put on.
By inserting from the b side, the shaft portions 47a, 47b at the tip thereof are pushed along the guide groove 24 (see FIGS. 2 and 3) of the valve body support portion 17 and inserted into the shaft hole 20, It is assembled so that it can rotate freely. In this assembled state, the guide pieces 50a and 50b hold the tip of the valve rod 42, and the inclined portion 51 of the pressing piece 49 is in pressure contact with the upper end of the valve rod 42.

As shown in FIG. 1, the protruding member 14 has a long hole 53 at the center.
It has a rectangular plate shape with a hole. The protruding member 14 is placed between the guide portions 34, 34 (see FIG. 4) of the stopper body 10 so that the stopper 35 fits into the elongated hole 53, and the end portion of the elongated hole 53 is placed. After the coil spring 54 is attached between the stopper 35 and the stopper 35 and biased inward, the plug cap 11 is fitted to the plug body 10 to be slidably assembled between the plug body 10 and the plug cap 11. Has been.

As shown in FIG. 7, the stopper 2 has an annular valve opening A formed between the valve body 12 and the valve packing 16 which are in the opened state, passes through the flow port 28, and the surrounding wall 30 and the guide. Wall 3
Through the inner surface of the plug body 10 divided by 2, 32, the notch portion 40 of the plug body 10 and the plug cap 11, and the opening / closing operation member 1
Liquid channel C leading to the spout B formed with the cover 45 of No. 3
Are formed.

In the closed state shown in FIG. 1 in the thermos bottle having the above-mentioned configuration, the valve body 12 is urged upward by the coil spring 44 to come into pressure contact with the valve packing 16, and the valve opening A (see FIG. 7) is closed. At the same time, the inclined portion 51 of the pressing piece 49 of the opening / closing operation member 13 is pressed against the upper end of the valve rod 42, so that the opening / closing operation member 13 is rotated counterclockwise in FIG. Spout B (see Fig. 7)
Is closed.

When the pressing portion 46 of the opening / closing operation member 13 is pushed obliquely upward from this closed state, the opening / closing operation member 13 moves to the shaft portion 47a,
In FIG. 1, the spout B is opened by rotating clockwise around 47b as shown in FIG.
1 slides against the upper end of the valve rod 42 and pushes down the valve rod 42 against the biasing force of the coil spring 44. As a result, the valve packing 16 and the valve body 12 are separated from each other, and the valve opening A is opened. Further, the rear end (right end in FIG. 1) of the cover 45 of the opening / closing operation member 13 presses the left end of the projecting member 14 in FIG. 1 against the urging force of the coil spring 54, and the projecting member 14 is fixed. Project outwards from the outer peripheral surface at the upper end of.

Then, as shown in FIG. 7, the spout B is completely opened,
When the upper end of the valve rod 42 is snap-fitted and locked in the recess 52 of the pressing piece 49, the opening / closing operation member 13 is held in a state in which the inlet B is opened, and the valve body 12 is opened in the valve opening A.
Is held in the open state, and the plug is opened.

In this state, the inside of the container body 1 communicates with the outside air via the liquid flow path C, so that if the container body 1 is tilted, the hot water or the like inside can be poured out from the spout B.

At this time, no matter how the container body 1 is tilted, the liquid flowing into the liquid flow path C from the valve opening A through the circulation port 28 is reliably guided to the spout B by the surrounding wall 30 and the guide wall 32. Therefore, the streamline is not disturbed and is smoothly poured.

When the container body 1 is rebuilt after pouring, the spout B
The liquid in the vicinity is guided by the guide wall 32 and the surrounding wall 30 and flows down the liquid flow path C in the opposite direction, and is reliably returned to the inside of the container body 1 through the valve opening A from the flow port 28. Therefore, the liquid does not flow out of the liquid flow path C and flow into the plug body 10, and the risk of liquid retention is eliminated.

By the way, in order to close the valve opening A and the injection port B to be in the closed state, the pressing portion 46 of the opening / closing operation member 13 may be lightly pressed obliquely downward. That is, when the pressing portion 46 of the opening / closing operation member 13 is pressed, the valve rod 42 is slightly pushed down by the inflection portion D of the inclined portion 51 of the pressing piece 49 and the concave portion 52, and the engagement with the concave portion 52 snaps. Because it will be canceled
Thereafter, the valve rod 42 pushes up the slanted portion 51 of the pressing piece 49 while slidingly contacting it with the biasing force of the coil spring 44. As a result, the opening / closing operation member 13 rotates counterclockwise in FIG. 7 to close the inlet B, while the valve body 12 presses the valve packing 16 to close the valve opening A. Further, since the rear end of the cover 45 is separated from the projecting member 14 by the rotation of the opening / closing operation member 13, the projecting member 14 is pulled back inward by the biasing force of the coil spring 54, and returns to the state shown in FIG. .

Instead of pressing the pressing part 46 of the opening / closing operation member 13 with a finger, the opening / closing operation member 13 can be rotated by pressing the tip of the protruding member 14, and the cap can be closed in the same manner as described above. Alternatively, even if the cup is covered or the lid is rotated and attached while forgetting to perform the capping operation by the opening / closing operation member 13 or the protruding member 14 as described above, the inner peripheral surface of the cup or the inner peripheral surface of the lid is attached. Since the protrusion provided on the upper part presses the tip of the protruding member 14, it is closed.

(Effect of the Invention) As is clear from the above description, according to the present invention, the liquid flowing out from the pouring port or flowing back from the pouring port flows through the liquid flow path formed by the guide wall and the surrounding wall. Therefore, there is an effect that the streamline is stable, the pouring condition is improved, and the liquid does not stay in the internal space of the stopper.

[Brief description of drawings]

FIG. 1 is an exploded sectional view of a thermos bottle with a stopper according to the present invention in a closed state, FIG. 2 is a partially cutaway perspective view of a valve body supporting portion of a stopper body, and FIG. 3 is an enlarged axial hole portion of a stopper body. Sectional view, FIG. 4 is a plan view of the plug body, FIG. 5 is a sectional view taken along line I-I of FIG. 4, and FIG.
FIG. 7 is an exploded sectional view showing the opening / closing operation member and a sectional view taken along line II-II of FIG. 4, and FIG. 7 is a sectional view of the thermos bottle in the opened state. DESCRIPTION OF SYMBOLS 1 ... Container body, 2 ... Stopper, 4 ... Mouth part, 10 ... Stopper body, 12 ... Valve body, 32 ... Guide wall, A ... Valve opening part, B ... Pouring port, C ... Liquid flow path.

Claims (1)

[Scope of utility model registration request] 1. A stopper of a liquid container fitted to an opening of a container body and having a valve and a pouring opening, wherein the internal space is formed from the valve opening side in an internal space extending from the valve opening to the pouring opening. A surrounding wall that forms a substantially cylindrical liquid flow path with the inner surface of the stopper body, and a guide wall that extends from the surrounding wall to the spout and that forms a groove-shaped liquid flow path with the inner surface of the stopper body. A stopper of a liquid container, wherein the stopper is formed.