JPH0616570Y2 - 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, as a stopper of a liquid container, in JP-A-61-2841 gazette, even if the operator forgets to operate the opening / closing operation member and keeps it in the opened state, it is closed by attaching the lid. What is made possible is known.

(Problems to be solved by the invention) However, in the above-mentioned conventional one, the spout provided in the plug body is always open regardless of whether the pusher body which is the opening / closing operation member is driven or not. In such a case, dust easily enters the liquid container in the stopper through the pouring port, which causes various problems in hygiene.

In addition, in order to maintain the pushed state (opened state) of the pusher,
The stopper provided on the pressing body is engaged with the projecting plate, and this stopper deteriorates due to use and has a problem that it cannot withstand long-term use.

Further, in order to close the lid by mounting the lid, the projecting member (pin) provided on the plug body is pushed by the screw of the lid to release the engagement of the stopper with the projecting plate. Has a problem that it is difficult to install.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a liquid container stopper that solves the above-mentioned problems in the liquid container stopper in which the liquid flow path is closed only by mounting the lid even if the user has forgotten to operate the opening / closing operation member. .

(Means for Solving the Problems) In order to achieve the above-mentioned object, a stopper according to the present invention has a liquid channel inside, and a stopper main body that fits inside a mouth of a container main body; A valve body urged in a direction of closing the liquid flow path, and an opening / closing operation member for driving the valve body by a cam mechanism to open / close the outlet and at the same time opening / closing the spout of the plug body with a cover. In association with the opening operation of the opening / closing operation member, the tip of the opening / closing operation member projects outward from the outer peripheral surface of the stopper body against the spring force, and the lid is rotated and mounted on the outside of the mouth of the container body. At this time, the projecting tip is constituted by a projecting member that moves the opening / closing operation member in the closing direction by being pressed by a projecting portion provided on the inner peripheral surface of the lid body.

(Operation) According to the above configuration, when the opening / closing operation member is operated in the opening direction, the valve body moves in the opening direction against the urging force of the valve body, and the outlet and the inlet are opened. This allows the liquid in the container body to flow out. Further, by operating the opening / closing operation member in the opening direction, the tip of the projecting member projects outward from the outer peripheral surface of the plug body against the spring force.

Then, without operating the opening / closing operation member in the closing direction, the lid body is covered on the outside of the mouth portion of the container body, and when it is rotated and mounted, the protrusion provided on the inner peripheral surface of the lid body is As a result of pressing the protruding tip, the protruding member moves inward and moves the opening / closing operation member in the closing direction. As a result, the valve body moves in the closing direction due to the urging force, and the outlet and the inlet are closed.

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

In FIG. 1, 1 is a container body of a thermos bottle, 2 is a stopper according to the present invention, 3a is a cup, and 3b is a lid that also serves as a cup.

The container body 1 is a vacuum double bottle made of stainless steel, and a shoulder body 5 is attached to the mouth portion 4 of the container body 4 by force fitting, and a body ring 6 having a circular arc shape is formed on the outer periphery thereof as shown in FIG. It is attached by tightening both ends with bolts and nuts 31a and 31b.

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. Further, on the outer surface of the shoulder body 5, a bayonet groove 9 with which a bayonet projection 56 of a lid body 3b described later is engaged is formed.

That is, as shown in FIGS. 2 to 4, the first protrusion 9a is provided at four locations on the same circumference of the outer peripheral surface, and the first projection 9a is provided on the same circumference with a predetermined distance from the first projection 9a toward the mouth portion. The second projections 9b are provided at four positions, and the bayonet groove 9 is formed between the first projections 9a and the second projections 9b. A stopper 9c is provided at the end portion in the clockwise direction when viewed from above the first protrusion 9a so as to close the bayonet groove 9, and the end portion in the counterclockwise direction is provided with the second member via the inclined member 9d.
It extends to the end of the protrusion 9b.

The upper end surface of the joint portion of the body ring 6 is shown in FIGS.
As shown in FIGS. 12 and 13, the lock member 58 of the lid 3b is shown.
Is formed with a lock recess 6a into which the protruding end of is fitted.

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. 5, the valve body support portion 17 is vertically divided by a partition plate 18 at an internal intermediate position.
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. 6, the valve body support portion 17 is provided so that the outer edge of the shaft holes 20, 20 above the center line L is flush with the inner edge of the shaft hole 20 below the center line L. 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 longitudinal direction in the ridge 22, and the lower end portion of the guide groove 24 is located in the vicinity of the shaft hole 20. 25. Further, the ridge 2 is formed on the outer surface below the center line L.
2 is formed to project further outward than 2, and an outer edge of the shaft hole 20 is extended on the upper end surface of the projection 26 to form a bearing portion 27 having a semicircular cross section.

At the bottom of the stopper body 10 and on the outer periphery of the valve body support portion 17,
As shown in FIG. 7, a substantially semicircular flow port 28 and a vent port 29 are provided at positions separated by 180 ° from each other in a direction orthogonal to the center line L of the shaft hole 20. As shown in FIGS. 7 and 8, a half-pipe-shaped surrounding wall 30 is provided above the flow port 28 up 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 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 reinforcing ribs 33, 33 engage with a notch portion 40 (see FIG. 11) of the cap 11 to be described later. It is supposed to do. Further, on the side opposite to the spout B by 180 °, guide members 34, 34 and a stopper 35 for supporting an opening / closing operation member 13 described later in a horizontally slidable manner.
Is provided, and 36 is a reinforcing rib extending below the guide portions 34, 34.

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

As shown in FIG. 11, the stopper cap 11 is a substantially U-shaped one having a rectangular notch 40 into which an opening / closing operation member 13 to be described later is inserted, and is forcibly fitted to the upper end of the stopper body 10. There is.

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.

As shown in FIG. 11, the opening / closing operation member 13 includes a cover 45 that closes the notch 40 of the stopper cap 11, and the cover 45.
9, a pressing portion 46 protrudingly provided on the outer surface of the cover 45, legs 48a, 48b having a shaft portion 47a, 47b at the lower end and protruding in a gate shape below both ends of the cover 45, as shown in FIG. Four
It is composed of a pressing piece 49 protruding in the center between 8a and 48b, and guide pieces 50a and 50b protruding on both sides of the pressing piece 49. As shown in FIG. 1, an inclined portion 51 which is a cam mechanism and a concave portion 52 are formed at the tip of the pressing piece 49.

As shown in FIG. 9, the opening / closing operation member 13 includes legs 48a, 48 on the stopper body 10 before the stopper cap 11 is covered.
It is rotatably assembled by being fitted from the b side, and the shaft portions 47a and 47b at the tip thereof are pushed along the guide groove 24 of the valve body supporting portion 17 and fitted into the shaft hole 20. Then, in this assembled state, the guide piece 50
a 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. 7) of the plug body 10 so that the stopper 35 is fitted in 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. 10, the stopper 2 has an annular outlet A formed between the valve body 12 and the valve packing 16 in the opened state, a circulation port 28, an enclosure wall 30 and a guide wall. Three
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.

On the other hand, the cup 3a has a larger diameter than the outer dimension of the stopper 2 in which the protruding member 14 is in the non-protruding state, and a smaller diameter than the outer dimension of the stopper 2 in which the protruding member 14 is in the protruding state.

As shown in FIG. 1, the lid 3b is a cup-shaped one having a grip portion 55. As shown in FIG. 11, bayonet projections 56 that engage with the bayonet grooves 9 of the shoulder body 5 are provided at four positions on the inner periphery of the edge of the lid body 3b, and the grip portion 55 near the bottom of the inner surface is located. A rectangular protrusion 57 is formed on the. Although not specifically shown, a lock member 58 is accommodated in the handle portion 55. The lock member 58 is biased by a coil spring 59 in a direction in which its tip is projected from the edge of the lid 3b, and the operation button 6 is pressed.
It is possible to move backward by 0.

In the closed state shown in FIG. 1 in the thermos bottle configured as described above, the valve body 12 is urged upward by the coil spring 44 to come into pressure contact with the valve packing 16, and the outlet A (see FIG. 10) 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, whereby the opening / closing operation member 13 is rotated counterclockwise in FIG. The mouth B (see FIG. 10) 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,
47b, the cover 45 is rotated clockwise in FIG.
The inclined portion 51 of 9 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 outlet 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. 10, when the spout B is completely opened and 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 causes the spout B to be closed. Is held in the open state, and the valve body 12 is held in the open state of the outflow port A, so that the valve body 12 is opened. Also,
As shown in FIG. 10, the projecting member 14 projects outward from the inner peripheral surface of the cup 3 a that covers the outer surface of the shoulder body 5.
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.

In order to close the outflow port 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 concave portion 52.
Since the lock with is released by snap, the valve rod 4
The urging force of the coil spring 44 pushes up the slanted portion 51 of the pressing piece 49 while sliding it. As a result, the opening / closing operation member 13 rotates counterclockwise in FIG. 10 to close the inlet B, while the valve body 12 makes pressure contact with the valve packing 16 to close the outlet 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.

By the way, it is assumed that the cup 3a is put on while forgetting to perform the capping operation by the opening / closing operation member 13 or the projecting member 14 as described above. At this time, since the tip of the projecting member 14 projects outward from the inner peripheral surface of the cup 3a that covers the outer surface of the shoulder body 5, the cup body 3a cannot be covered with the cup 3a as it is.

Therefore, as shown in FIG. 10, when the cup 3a is slid over the shoulder body 5, the inner surface of the cup 3a presses the tip of the protruding member 14. As a result, the projecting member 14 moves inward to rotate the opening / closing operation member 13 counterclockwise in FIG. 10, and as a result, it is closed as described above.

Next, it is assumed that the lid 3b is attached to the thermos bottle in the open state without covering the cup 3a. In this case, as shown in FIG. 11, the grip portion 55 of the lid body 3b is placed so as to be covered in a state in which it is displaced from the normal position by a slight twist in the counterclockwise direction when viewed from above. Good.

When the lid 3b is put on, as shown in FIG. 12, the bayonet protrusion 56 contacts the second protrusion 9b of the shoulder body 5. When the lid body 3b is pressed against the shoulder body 5 and twisted in the clockwise direction, the projection 57 on the inner surface of the lid body 3b pushes the tip of the projecting member 14 as shown in FIG.
The cap is closed as described above.

When the lid 3b is further rotated, as shown in FIG. 12, the bayonet protrusion 56 slides on the slope of the inclined member 9d from the second protrusion 9b of the shoulder 5 and fits into the bayonet groove 9. . At the same time, the lower end of the lock member 58 of the lid 3b comes into pressure contact with the upper end surface of the body ring 6 and is pushed up against the biasing force of the coil spring 59 (see FIG. 1). Then, the bayonet protrusion 56 slides into the bayonet groove 9 and abuts on the stopper 9c, and at the same time, the lower end of the lock member 58 is fitted into the lock recess 6a of the upper end surface of the body ring 6 and is securely attached.

In order to remove the lid 3a, first, the operation button 60 (see FIG. 1) of the lid 3b may be pushed in, whereby the lock member 58 is urged by the coil spring 59 (see FIG. 1). As a result of being pushed up against it, the lower end of the lock member 58 retracts into the handle portion 55 and separates from the lock concave portion 6a of the body ring 6, and the lock is released.

When the lid body 3b is twisted counterclockwise while the operation button 60 is being pressed, the lid body 3b rotates in the same direction, and
As shown in FIG. 2, the bayonet protrusion 56 slides in the bayonet groove 9 of the shoulder body 5 and rides on the second protrusion 9b along the inclined member 9d, and is detached from the bayonet groove 9 so that the lid body 3b is removed from the shoulder body 5.

(Effect of the Invention) As is apparent from the above description, according to the present invention, even if the lid is attached while the opening / closing operation member is forgotten to be operated, it is provided on the inner peripheral surface of the lid. Since the protrusion automatically and smoothly presses the protruding member, and the protruding member moves the opening / closing operation member in the closing direction, the fluid passage is closed by simply mounting the lid, and the closed state is obtained. Leakage
It is safe because it does not overflow when the lid is removed. Further, the spout is opened and closed in response to the operation of the opening / closing operation member, that is, the spout is opened only when it is used, which is sanitary. Further, the valve body is opened and closed by the cam mechanism provided on the opening / closing operation member, and the projecting member for closing the opening / closing operation member is also held by the plug body by the spring force. Thus, the valve body can be operated reliably for a long period of time.

[Brief description of drawings]

FIG. 1 is an exploded cross-sectional view of a thermos bottle with a stopper according to the present invention in a closed state, FIG. 2 is a plan view of a shoulder body, FIG. 3 is a front view seen from the handle side of the shoulder body, and FIG. FIG. 5 is a partially cutaway perspective view of the valve body supporting portion of the stopper body, FIG. 6 is an enlarged sectional view of the shaft hole portion of the stopper body, and FIG. 7 is a perspective view of the stopper body. FIG. 8 is a plan view, FIG. 8 is a cross-sectional view taken along the line II of FIG. 7, FIG. 9 is an exploded cross-sectional view showing an opening / closing operation member and a cross-section taken along the line II-II of FIG. 7, and FIG. Cross section of the first
1 is a sectional view taken along the line III-III in FIG. 10, and FIG.
It is a S direction arrow line view of a figure. DESCRIPTION OF SYMBOLS 1 ... Container body, 3b ... Lid body, 4 ... Mouth part, 10 ... Plug body, 12 ... Valve body, 13 ... Opening / closing operation member, 14 ... Projection member, C ... Liquid flow path, 57 ... Projection part.

Claims (1)

[Scope of utility model registration request] 1. A plug main body having a liquid flow path therein, which fits inside a mouth of a container main body, a valve body urged in a direction to close the liquid flow path of the plug main body, and a cam. A mechanism drives the valve element to open and close the outlet, and at the same time an opening and closing operation member that opens and closes the inlet of the stopper main body, and the tip of the opening and closing operation member interlocks with the opening operation of the opening and closing operation member. It projects outward from the outer peripheral surface of the container against the spring force, and when the lid is rotated and mounted on the outside of the mouth of the container body, the protruding tip is provided on the inner peripheral surface of the lid. A stopper for a liquid container, comprising a protrusion member which is pressed by a portion to move the opening / closing operation member in a closing direction.