JP3517361B2 - Liquid container stopper - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid container stopper.

[0002]

2. Description of the Related Art In this type of liquid container, a stopper is attached to an opening at the upper end of the container body, and a liquid passage communicating with the inside of the container body formed in the stopper is operated by operating an operating portion of the stopper. It is opened to release the liquid in the container body so as to be able to be poured out from the spout, or to be closed so as not to leak.

As the stopper of the liquid container, the Japanese Utility Model Publication 58-
As shown in No. 39156, a structure in which a communication part with the container body on the upstream side (lower part) of the liquid passage of the liquid container is airtightly closed from above by a hollow seal packing arranged in the water stop valve body. What you have done is provided.

However, with the stopper, when hot water is poured into the container body, the internal pressure of the container body rises, and the pressure acts to move the water shut-off valve body upward, and at the same time, it becomes hollow. It works to press the upper seal packing toward the space side. As a result, there is a disadvantage that a gap is generated at the edge between the seal packing and the communicating portion between the container body and the sealability cannot be maintained. Therefore, when the liquid container falls down in this state, there is a disadvantage that the liquid (hot water) in the container body leaks from the spout through the liquid passage.

Therefore, conventionally, for example, the actual fairness 4-4
As shown in No. 668, a seal packing is arranged at the lower end of the plug as an inner plug that is detachably attached to the upper part of the container body, and the water blocking valve body is biased upward with respect to the seal packing. By pressing from below,
There is provided an airtightly closing lower end outlet of the liquid passage.

In the inner stopper of the liquid container, when the internal pressure rises by pouring hot water into the container body, the water shutoff valve body moves upward, so that the water shutoff valve body is further attached to the seal packing. It acts so as to press, and as a result, the sealing property can be further improved.

[0007]

However, in the inner stopper of the liquid container, after the liquid in the container body is poured out,
When the liquid passage is closed while the liquid still remains in the liquid passage, the liquid is collected in the liquid passage. Further, the liquid attached to the wall surface of the liquid passage also collects in the liquid passage. And
In this state, if the liquid container falls down, the disadvantage that the collected liquid leaks to the outside from the spout will occur. Moreover, in the inside plug, since the lower end of the liquid passage is closed by the water stop valve body, it is difficult to wash the inside of the liquid passage at the time of washing.

Therefore, it is an object of the present invention to provide a stopper for a liquid container which can surely prevent the liquid from leaking from the spout and can be easily cleaned.

[0009]

In order to solve the above-mentioned problems, the stopper of the liquid container of the present invention is a liquid in the container body from a pouring port formed at the upper end of a liquid passage communicating with the inside of the container body. In the stopper of the liquid container that is opened so as to be pourable and closed so as not to leak, a water shutoff valve body that airtightly closes the upper portion of the liquid passage from above via a seal portion is provided, and the seal portion is the The container body is deformed by the internal pressure to be in close contact with the wall surface of the liquid passage, and the water shut-off valve body is arranged on the rotatably arranged flap for closing the inlet and the operation section is operated. A slide member that slides in the horizontal direction to rotate the flap is provided, and the slide member is provided with the slide valve while the liquid passage is closed by the cutoff valve body. Prevents upward movement of the body Provided with a locking portion that has a configuration in which a locked portion of the lock portion is locked to said flap.

According to the stopper of the liquid container, since the liquid passage is sealed at the upper portion by the seal portion, after the liquid is poured out, the liquid passage still has the liquid remaining in the closed state. Even so, the liquid returns to the inside of the container body, and the liquid attached to the wall surface of the liquid passage also returns to the inside of the container body and does not collect in the liquid passage. As a result, it is possible to reliably prevent the liquid remaining in the liquid passage from leaking out from the spout like an inner plug that is closed from below by the water stop valve.

Further, the water shut-off valve body is arranged on the flap for closing the pouring port, which is rotatably arranged. Accordingly, when the flap is opened, the liquid passage is opened to be completely exposed. Therefore, when the stopper is detached from the container body and washed, the workability is good and the stain caused by the liquid can be reliably removed.

Further, in this stopper, when hot water is poured into the container body, as in the conventional case, the internal pressure of the container body rises, and a force of moving upward is applied to the seal portion. However, according to the present invention, the lock portion is provided on the slide member that slides in the horizontal direction by operating the operation portion to rotate the flap, and the locked portion locked by the lock portion is the flap. Therefore, in the closed state, the locking portion is locked to the locked portion, whereby the flap can be reliably prevented from rotating in the opening direction. As a result, it is possible to reliably maintain the sealing performance of the sealing portion, and as a result,
It is possible to reliably prevent the liquid from leaking to the outside from between the seal portion and the liquid passage.

In the stopper of the liquid container, the sealing portion is
It is preferable to form a tubular shape having a substantially J-shaped cross section.

Further, it is preferable that a fitting portion into which the seal portion is fitted is provided on the upper portion of the liquid passage to improve the sealing property.

Further, the container body is provided with a lid body attached to an upper part thereof, and the lid body is attached to the container body body so that a closed portion of the lid body is brought into substantially contact with at least a part of the water shutoff valve body or the flap. Therefore, it is preferable to surely prevent the water stop valve body from moving in the opening direction.

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. 1 to 5 show a liquid container 1 equipped with a stopper (inner plug 11) according to a first embodiment of the present invention.
The liquid container 1 includes a container body 2 composed of an inner bottle 3 and an outer bottle 4 having a vacuum double structure, and the inner plug 11 can be attached to and detached from the upper end opening of the container body 2 via a shoulder body 5. In addition to the attachment, the lid body 6 also serving as a cup is detachably attached to the shoulder body 5.

The shoulder body 5 is externally fitted into the upper end opening of the container body 2 from above and is attached to the outer bottle 4 by a well-known attachment structure such as forced fitting. Further, on the outer periphery of the shoulder body 5, a mounting portion 5a having a known mounting structure such as screwing the lid body 6 is provided.

The lid 6 also serves as a cup used when drinking liquid such as hot water in the container body 2.
The total height of the valve body 31 when attached to the shoulder body 5 is such that the closing portion located on the upper side has a water stop valve body 31 in the inside plug 11 described later.
The height is set to abut on the shaft portion 32a. In addition,
The lid body 6 does not necessarily have to be brought into contact with the shaft portion 32a, and may be brought close to the extent of substantially coming into contact therewith.

The inner plug 11 of the first embodiment is a push-operable type, and generally, a plug 12, a mounting ring 20, a plug cap 21, a flap 22, a water stop valve body 31, and a slide member. 34, the air bleeding valve body 42, and the operating portion 48.
Consists of.

The stopper 12 is attached to the upper end opening of the container body 2, has a substantially bottomed cylindrical shape, and has a substantially cross-section C extending upward on the inside front side (left side in FIG. 1). A liquid passage 14 having upper and lower end openings surrounded by a character-shaped partition wall 13 and an inner surface of the outer peripheral wall is provided. This liquid passage 14
The upper inner periphery of the partition wall 13 is cut out in the upper part of
A tubular fitting portion 15 into which a seal portion 33 described later is fitted is provided. Further, the upper portion of the fitting portion 15 is formed so as to spread toward the outer peripheral portion side, and the upper end thereof serves as a spout 16. Further, at the bottom of the plug body 12, an insertion hole 17 is provided at a position distant from the center portion to the rear side (right side in FIG. 1) to insert the shaft portion 43 of the air bleeding valve body 42. In addition, a support portion 1 for positioning and supporting a rotary shaft 26 of a flap 22 described below from below from inside the plug body 12.
8 is projected from the bottom. Further, an annular packing 19 that seals between the inner peripheral portion of the container body 2 is attached to the outer peripheral portion of the lower end of the plug body 12.

The mounting ring 20 has a cylindrical shape having a diameter larger than that of the plug body 12, is arranged outside the plug body 12, and has a well-known mounting structure such that the upper end thereof is forcibly fitted to the upper end of the plug body 12. When attached, it is attached to the shoulder body 5 together with the plug body 12. This mounting ring 20
Is a mounting portion 5a which is screwed to the inner peripheral portion of the shoulder body 5 for mounting.
Is equipped with.

The stopper cap 21 is fitted and attached inside the upper end of the stopper body 12, and as shown in FIG. 3, the inlet 16 of the liquid passage 14 formed in the stopper body 12 and a flap described later. A notch 21a exposing 22 is formed, and a groove 21b for attaching the slide member 34 so as to be horizontally slidable is formed on the inner surface. Further, on the bottom surface of the stopper cap 21, a spring for positioning the upper part of the rotating shaft 26 of the flap 22 so as to face the support portion 18 of the stopper body 12 and biasing the slide member 34 outwardly. L for receiving one end of 41a
A V-shaped protrusion 21c is provided. In the figure, 21
Reference numeral d denotes a guide cylinder that exposes and guides an operation portion 48 described later, and this guide cylinder 21d includes:
A groove for inserting the protrusion 49 and the protrusion 50 of the operation portion 48 is formed.

As shown in FIGS. 1 to 3, the flap 22 is rotatably arranged on the plug 12 to close the spout 16, and the flap 22 is provided on the front side of the main body 23. 1
It has a closing portion 24 that substantially matches the shape of 6. The closing portion 24 is provided with a through hole 25 through which a water blocking valve body 31 described later is inserted and held. A leg portion 23a is provided on both sides of the main body 23 so as to project downward, and a pivot shaft 26 rotatably supported by the support portion 18 is provided on the leg portion 23a. In addition, on both legs 23a of the main body 23,
A stepped protrusion 27 that supports a lower surface of an arm 36 of a slide member 34, which will be described later, is provided. This stepped protrusion 27
4 is provided with a notch groove 28 that is cut out in a substantially concave shape from above. As shown in FIG. 4B, by pressing the arc edge of the notch groove 28 with the tip of the arm portion 36, the flap 22
The whole is rotated in the closing direction. Also,
As shown in FIG. 4 (A), the stepped protrusion 27 has a flap 22 on the left side of the cutout groove 28 in the drawing with a lock portion 36a of a slide member 34, which will be described later, locked when the spout 16 is closed. Locked part 27 for preventing rotation in the opening direction of the
a. Further, one leg portion 23 a is provided with a convex portion 29 that projects outward, and the flap 2 is attached to the convex portion 29.
A spring 29a that biases 2 in the opening direction is locked. It should be noted that the spring 29a cannot be disengaged against the insertion force when the seal portion 33, which will be described later, is inserted into the insertion portion 15 of the plug body 12, and
In the detached state, the urging force is set such that the flap 22 can be rotated clockwise in the drawing. A rear wall portion 23b is provided on the rear side of the main body 23 so as to project downward, and the rear wall portion 23b
The interference protrusion 30 is provided in the.

The water shutoff valve body 31 includes the flap 22.
It is inserted through the through hole 25 and attached, and is made of an elastic material such as silicon rubber. Specifically, as shown in FIGS. 1 and 2, the water shut-off valve body 31 includes a valve body 32 having a substantially inverted T shape, and the valve body 32 hermetically closes the upper portion of the liquid passage 14. The sealing portion 33 is integrally molded. The seal portion 33 has a cylindrical shape with a slightly larger diameter that can be fitted into the fitting portion 15 formed in the upper portion of the liquid passage 14, and the lower end portion has a reduced diameter to form a substantially inward J-shaped cross section. Is curved. Also, this seal part 3
The wall thickness of 3 is thin so as to have elasticity. The shaft portion 32a extending upward in the valve body 32 is provided with a locking portion 32b that locks on the upper edge of the through hole 25 and prevents the valve body 32 from falling off from the flap 22. Further, the shaft portion 32a is attached to the flap 22,
The upper end of the shaft protrudes from the flap 22, and the upper end of the shaft portion 32a is at the uppermost position when the flap 22 is assembled to the plug body 12.

The slide member 34 is slidably mounted between the plug cap 21 and the upper portion of the plug body 12, and has a notch 35 cut out in a U-shape from the end.
The board part 35 having a is provided. A pair of arm portions 36 are provided at the front end portion of the substrate portion 35. The lower surfaces of the tips of the arms 36 are provided on the main body 23 of the flap 22.
The lock portions 36a extend on the stepped protrusions 27 on both sides of the lock portion 36a. Further, a leg portion 37 protruding downward is provided at the front end of the substrate portion 35, and the leg portion 3 is provided.
The lower end of 7 is connected by a connecting portion 38. Between the inner surface of the base plate portion 35 and each leg portion 37, an inclined surface 39a on which a protrusion 49 of an operation portion 48 attached to an air bleeding valve 42 described later slides, and the protrusion 49 at its lowered position. A locking step portion 39b for locking is provided. In the figure, 40 is a reinforcing rib, and 41 is a positioning shaft that is inserted into a spring 41a that biases the slide member 34 outward.

The air bleeding valve body 42 is the plug body 12
A shaft portion 43 having a diameter slightly smaller than that of the insertion hole 17 formed in FIG. A seal packing 45 made of an O-ring is attached to the air bleeding valve body 42 to hermetically close the insertion hole 17 formed in the plug body 12 from below. Further, a cylinder body 46 having an upper end closed is attached to the shaft portion 43, and a spring 47 is mounted between the cylinder body 46 and the plug body 12 so that the entire air bleeding valve body 42 is turned upward. I am biased.

The operating portion 48 is the valve body 4 for bleeding air.
The slide member 34 is mounted above the second shaft portion 43.
And is exposed upward through the cap 21 and has a cylindrical shape with an upper end closed as shown in FIG.
A pair of protrusions 49 that engage with the bottom surface of the slide member 34 and the engagement step portion 39b are provided on the outer periphery of the lower end so as to face each other in the radial direction. Further, a protrusion 50 that interferes with the interference protrusion 30 of the flap 22 from above is provided on one side of the protrusion 49 at a 90 degree interval.

Next, the operation of the inner stopper 11 of the liquid container 1 having the above-mentioned structure during operation will be described. When the liquid in the container body 2 is poured out from the state of FIG. 1, first, with the lid body 6 removed, the operation portion 48 exposed from the stopper cap 21 is pushed from above.

As a result, the air bleeding valve body 42 descends via the operating portion 48 against the urging force of the spring 47, and the air bleeding state becomes ready. And the operation unit 4
When the protruding portion 49 of 8 is lowered below the locking step portion 39b of the slide member 34, the slide member 34 slides outward by the biasing force of the spring 41a, and the lock portion 36a of the arm portion 36 moves to the step of the flap 22. The protrusion 27 is retracted from the locked portion 27a. At the same time, the projection 50 of the operating portion 48 pushes down the interference projection 30 of the flap 22 from above, thereby rotating the flap 22 slightly clockwise in FIG. 1, and the sealing portion 33 of the water stop valve body 31.
Is removed from the fitting portion 15 of the liquid passage 14. And then
The flap 22 to which the water shutoff valve body 31 is attached is rotated clockwise by the urging force of the spring 29a.

In this state, when the operator pushes the operating portion 48 and releases the hand, the protrusion 49 of the operating portion 48 causes the slide member 3 to move.
4 is locked to the locking stepped portion 39b, and the locked state is held by the spring 47 that biases the air bleeding valve element 42 upward, and the air bleeding state is held. The slide member 34 includes a spring 41a for urging the slide member 34 outward and the air bleeding valve body 4
The open state is maintained by the locking of the operating portion 48 that is biased upward by the second spring 47. Further, the flap 22 is maintained in the released state by the spring 29a that biases the flap 22 in the opening direction. As a result, as shown in FIG. 2, the upper portion of the liquid passage 14 is completely released, and the bleeding state is maintained.
The liquid in the container body 2 communicating with the container 4 is ready to be poured out. As shown in FIG. 4B, the tip of the arm portion 36 of the slide member 34 is inserted into the notch groove 28.

On the other hand, when closing the liquid passage 14 from the open state, the slide member 34 protruding outward from the plug 12 in FIG. 2 is pressed forward (to the left in the drawing).

As a result, the slide member 34 slides in the closing direction against the biasing force of the spring 41a. The tip of the arm portion 36 of the slide member 34 is
By pressing the arc edge of the cutout groove 28 in the flap 22, the flap 22 rotates in the closing direction. The end of the locking step portion 39b of the slide member 34 is located at the operation portion 4
When it goes over the protrusion 49 of No. 8, the air bleeding valve body 42 is raised by the spring 47 and the operating portion 48 is also raised. Then, when the slide member 34 is completely slid to the front side, as shown in FIG. 4, the lock portion 36 a locks the locked portion 27 a of the stepped protrusion 27 of the flap 22. As a result, the seal portion 33 of the water shut-off valve body 31 attached to the flap 22 is fitted into the fitting portion 1 of the liquid passage 14.
5 and is maintained in the closed state of the liquid passage 14.
Also. The air bleeding valve body 42 seals the plug body 12 and holds the operating portion 48 in a state of moving upward.

In the closed state, for example, when hot water is put inside the container body 2, the internal pressure of the container body 2 rises, as shown in FIG.
A force Fa that moves upwards acts on the flap 22 via the water stop valve body 31. Further, as shown in FIG. 5, a force Fb acts on the seal portion 33 formed integrally with the water shut-off valve body 31 so as to spread outward from the inside of the tubular shape, as shown in FIG.

However, in the inside plug 11 of this embodiment, as shown in FIG.
As shown in (B), the lock portion 36 of the slide member 34.
Since the movement of the flap 22 in the opening direction is prevented by a, the flap 22 does not move in the opening direction by the upward force Fa. Further, since the seal portion 33 of the water shut-off valve body 31 of the present embodiment is formed in a thin tubular shape having a substantially J-shaped cross section so as to have elasticity, the liquid passage is generated by the outward force Fb. It comes into close contact with the fitting portion 15 provided on the base 14. As a result, the sealing property is improved, and the liquid in the container body 2 is reliably prevented from leaking from the spout 16.

Further, in this embodiment, since the liquid passage 14 is sealed at the upper portion, even if the liquid is still left in the liquid passage 14 after the liquid is poured out, the closed state can be obtained. The liquid returns to the container body 2 and does not collect in the liquid passage 14. Of course, the liquid attached to the wall surface of the liquid passage 14 also returns to the inside of the container body 2. As a result, it is possible to eliminate the possibility that the liquid remaining in the liquid passage will leak out from the spout like the conventional inner plug that is closed from below the plug by the water stop valve. . Further, in the state where the flap 22 is opened, as shown in FIG. 2, the liquid passage 14 is completely exposed, so that the workability when removing the inner plug 11 from the container body 2 and washing is good, It is possible to reliably remove stains caused by.
In addition, when the lid body 6 is attached to the container body 2 in the closed state, the inner surface of the closed portion of the lid body 6 contacts the upper end of the shaft portion 32a of the water shutoff valve body 31, as shown in FIG. Alternatively, the flaps 22 can substantially contact with each other to prevent the flap 22 from moving in the opening direction. Even when the lid body 6 is brought into contact with the upper end of the shaft portion 32a, the seal portion 33 absorbs the dimensional error in the vertical direction, so that the lid body 6 can be reliably attached to the container body 2.

Incidentally, in the inside plug 11 of the first embodiment,
With respect to the flap 22, the shaft portion 32a of the water shut-off valve body 31 is penetrated through the through hole 25, and the seal portion 33 formed integrally with the water shut-off valve body 31 is provided. As shown in FIG. It is also possible to provide an attachment portion that constitutes a part of the valve body in the closing portion 24 of the flap 22 and attach the water stop valve body 51 to this attachment portion. In this case, a protrusion 24a may be provided on the upper surface of the closing portion 24 of the flap 22 so as to be located at the uppermost position of the inside plug 11, and the closing portion of the lid 6 may be brought into contact with or substantially contact with the protrusion 24a. preferable.

Further, it is not always necessary to provide the cylindrical fitting portion 15 on the upper portion of the liquid passage 14, and as shown in FIG. 6, it may be an inclined surface which spreads upward. Even with this structure, when the internal pressure rises by pouring hot water into the container body 2, the seal portion 51a of the water shut-off valve body 51, which opens at the lower end, elastically spreads outward and adheres to the wall surface. This makes it possible to maintain or improve the sealing property and reliably prevent the liquid in the container body 2 from leaking.

7 and 8 show the inner plug 55 of the second embodiment.
The liquid container 1 to which is applied is shown. The inner plug 55 of the second embodiment is of a slide operation type, and generally, the plug 12, the mounting ring 20, the plug cap 58, the flap 59, the water stop valve body 31, the slide member 61, And an air bleeding valve body 42. The stopper 12 and the attachment ring 2
0, the valve element 31 for stopping water, and the valve element 42 for bleeding air,
Since the configuration is the same as that of the first embodiment, the same reference numerals are given and detailed description will be omitted.

The plug cap 58 is different from that of the first embodiment in that an accommodating portion 58a for the slide member 61 is formed on the upper surface in order to expose an operation portion 69a of the slide member 61 described later to the upper side. ing.

Similar to the first embodiment, the flap 59 is rotatably arranged on the plug body 12 and closes the spout 16 so that it can be opened and closed. The flap 59 is provided with a closing portion 64 that matches the shape of the spout 16 on the front side of the main body 63 similar to that of the first embodiment, and a through hole for inserting and holding the water stop valve body 31 in the closing portion 64. 65 is provided.
Further, on both sides of the main body 63, a rotation shaft 66 rotatably supported by the support portion 18 of the plug 12 is provided in a protruding manner, and the stepped protrusion portion 27 shown in the first embodiment is not formed. . On the rear side of the main body 63, a slide member 61 which will be described later from the lower side.
Locked part 67 which is a recess for locking the lock part 72 of
Are formed. Further, as shown in FIG. 7, an engaging portion 68 provided with an engaging piece 68a extending vertically upward at the projecting end is projectingly provided at a lower portion of the locked portion 67 in the main body 63.

The flap 59 may be provided with a mounting portion for mounting the water shut-off valve body 51 to the closing portion 64 of the flap 59, as in the modification shown in FIG. Further, it is not always necessary to provide the cylindrical fitting portion 15 on the upper portion of the liquid passage 14. Further, the flap 59 may be provided with a spring that urges the flap 59 in the closing direction.

The slide member 61 is provided with a base plate portion 69 having a concave operation portion 69a formed on the upper surface thereof, and is slidably mounted between the stopper body 12 and the stopper cap 58 so that the flap 59 is provided. The rotating shaft 66 is rotated about a fulcrum to open / close the spout 16. A lower portion of the base plate portion 69 has an inclined surface 70a having a forward downward slope, and a pressing portion 70 for lowering the air bleeding valve body 42 is provided by the inclined surface 70a. The pressing portion 70 is in the closed state shown in FIG.
The upper end of the shaft portion 43 of the air bleeding valve body 42 may be brought into contact with the inclined surface 70a, and may be biased in the closing direction by a spring 47 that biases the air bleeding valve body 42 upward. Further, the lower end surface of the push-down portion 70 is provided with a recess 70b for locking the upper end of the shaft portion 43. Further, the flap 59 is provided at the tip of the substrate 69.
A hook-shaped hook portion 71 that engages with the engaging piece 68a with a predetermined play is provided in a protruding manner. When the flap 59 shown in FIG. 8 is open, the hook portion 71 has its lower end located on the upper side of the engaging piece 68a of the flap 59 to prevent the flap 59 from rotating in the closing direction. I have to. Further, on the front end surface of the hook portion 71, there is provided a lock portion 72 formed of a protrusion that enters and locks in the locked portion 67.

When the liquid container 1 to which the inner stopper 55 of the second embodiment is applied and the liquid in the container body 2 is poured out, first, the lid 6 is removed and the stopper cap 58 is removed.
The more exposed operation portion 69a of the slide member 61 is pushed outward to perform a slide operation.

As a result, the slide member 61 slides outward, and the inclined surface 70a of the push-down portion 70 pushes the upper end of the shaft portion 43 of the air bleeding valve body 42 downward, so that the spring 47 is biased. The lock portion 72 retreats from the inside of the locked portion 67 of the flap 59 while being lowered against it. Then, the hook portion 71 is the flap 5
After abutting against the engagement piece 68a of No. 9, the engagement piece 68a is pressed backward to rotate the entire flap about the rotation shaft 66 in the clockwise direction in the figure.

Thereafter, the upper end of the shaft portion 43 of the air bleeding valve body 42 is engaged with the recess 70b formed in the push-down portion 70 of the slide member 61, and the engaging piece 6 is attached to the lower surface of the hook portion 71.
The upper end of 8a is located. As a result, the upper portion of the liquid passage 14 is completely released and air is removed, so that the liquid in the container body 2 communicating with the liquid passage 14 can be poured out.

On the other hand, when closing the liquid passage 14 from the open state, the end of the slide member 61 protruding outward from the plug 12 is pressed forward (to the left in the drawing).

As a result, the recess 7 formed in the pressing portion 70
0b is disengaged from the shaft portion 43 of the air bleeding valve body 42, and the air bleeding valve body 42 is raised by the urging force of the spring 47. Further, the hook portion 71 of the slide member 61
By releasing the engagement between the flap 59 and the engagement piece 68a of the flap 59, the flap 59 is rotated in the closing direction by its own weight, and the seal portion 33 of the water shutoff valve body 31 is inserted into the fitting portion 15 above the liquid passage 14. Located on top. Then, when the slide member 61 is completely slid to the front side, the lock portion 72 causes the flap 5 to move.
9 enters into the locked portion 67 of 9 to lock the flap 59 so that it cannot rotate. As a result, as in the first embodiment, the seal portion 33 of the water shutoff valve body 31 attached to the flap 59 is pushed into the fitting portion 15 of the liquid passage 14,
The closed state of the liquid passage 14 is maintained.

As described above, also in the slide operation type inner plug 55 as in the second embodiment, the lock portion 72 formed in the slide member 61 allows the seal portion of the water shut-off valve body 31 disposed in the flap 59. It is possible to prevent the liquid in the container body 2 from leaking by pushing 33 into the fitting portion 15 of the liquid passage 14 in the stopper 12. Further, even if the internal pressure of the container body 2 rises, the flaps 59 prevent the flaps 59 from rotating in the opening direction, so that the sealing performance can be reliably maintained. Further, since the liquid passage 14 is sealed at the upper portion, it is possible to prevent the liquid from accumulating in the liquid passage 14 and to improve the workability when cleaning the inside of the liquid passage 14.

FIG. 9 shows a liquid container 1 to which the stopper 75 of the third embodiment is applied. The stopper 75 of the third embodiment is detachably attached to the upper part of a double-structured container main body 2 ′ using a heat insulating material 2a such as urethane by a known attachment structure such as screw fastening, and is roughly. A plug 76, a resin flap member 79, a water stop valve 86, an operating member 90, and an air bleed valve not shown. The container body 2 '
May have a vacuum double structure as in the first and second embodiments. Further, in the figure, the lid that also serves as the cup shown in each of the above-described embodiments is not attached, but a lid that abuts or substantially contacts a part of the flap member 79 may be provided as in the above-described embodiment. .

The stopper 76 has a cylindrical shape with its upper end closed.
The liquid passage 77 having a cylindrical shape is integrally formed with a part thereof. An arrangement portion 78 for the flap member 79 and the operation member 90 is formed on the opposite side of the stopper 76 from the liquid passage 77. A bracket (not shown) to which a flap member 79 is rotatably attached is formed on the outer peripheral portion of the arrangement portion 78, and the operation member 90 is arranged between the brackets.

The flap member 79 has the liquid passage 77.
It is composed of a closing portion 80 for covering and a mounting portion 82. The closing portion 80 has a double wall structure, and the water blocking valve 8 is provided on the inner wall thereof.
A through hole 81 for attaching 6 is provided. A shaft 83 that is rotatably mounted on the bracket of the plug 76 is formed on the mounting portion 82, and an elastic plate 84 that projects downward with a predetermined distance from the shaft 83 is provided on the mounting portion 82. Further, on the closing portion 80 side, a locking claw 8 that locks a locked portion 93 formed on an operation member 90 described later.
A lock portion 85 having 5a is provided.

The water stop valve body 86 is provided with a valve body 87 having a substantially inverted T shape, and a seal portion 88 is provided under the valve body 87.
Is integrally molded. Similar to the first embodiment, the seal portion 88 has a thin-walled tubular shape having a diameter slightly larger than the inner diameter of the liquid passage 77, and a lower end portion thereof is curved and formed inward so as to be reduced in diameter. A locking portion 89 is provided on the upper end of the shaft portion 87a of the valve body 87 to prevent the water shut-off valve body 86 from falling off by locking to the upper edge of the through hole 81 in the flap member 79. There is.

The operating member 90 is in the shape of a rectangular cylinder, and is arranged so as to be slidable in the horizontal direction with respect to the plug body 76. An operation portion 91 for push operation is provided at one end of the operation member 90, and the operation portion 9 is provided.
A projecting piece 92 is provided so as to be adjacent to the lower end of the elastic plate 84 of the flap member 79 at a predetermined interval from the projecting piece 1. A locked portion 93 with which the lock portion 85 of the flap member 79 is locked is provided at the other end of the operation member 90. In the figure, 94 is a spring that biases the operating member 90 outward. Further, the air bleeding valve body (not shown) may have an appropriate structure which is interlocked by opening and closing the flap member 79.

When the liquid container 1 to which the stopper 75 of the third embodiment is applied is used and the liquid in the container body 2'is poured out, the operating portion 9 of the operating member 90 exposed on the side portion of the stopper body 76 is used.
Push 1 to press inward.

As a result, the operating member 90 moves the spring 9
The elastic plate 84 of the flap member 79 is deflected by the protrusion 92 of the operation member 90 to give a repulsive force by sliding against the urging force of No. 4. After that, the locked portion 93 of the operation member 90 and the lock portion 85 of the flap member 79 are released from each other, so that the flap member 7 is repulsed by the elastic plate 84.
9 rotates as shown by the chain double-dashed line in the figure to open the liquid passage 77 of the stopper 76.

On the other hand, when closing the liquid passage 77 from the open state, the flap member 79 is rotated counterclockwise so that the sealing portion 88 of the water shut-off valve body 86 is placed in the liquid passage 77. While being pushed in, the lock portion 85 is locked to the locked portion 93 of the operation member 90.

As a result, like the above-described embodiments, it is possible to reliably prevent the liquid from leaking to the outside even if the internal pressure in the container body 2 rises, and to open the flap member 79 during cleaning. The inside of the liquid passage 77 can be easily and surely cleaned.

[0058]

As is apparent from the above description, in the stopper of the liquid container of the present invention, the water shut-off valve body having the seal portion for hermetically closing the upper portion of the liquid passage from above is provided, and the liquid passage is closed. Since the seal is made at the upper part, even if the liquid is left in the liquid passage and the liquid passage remains closed after the liquid is poured out, the liquid will return to the inside of the container body, and will also contact the wall of the liquid passage. The adhered liquid also returns to the container body and does not collect in the liquid passage. As a result, there is no possibility that the liquid remaining in the liquid passage will leak to the outside from the pouring port, unlike the conventional inside plug that is closed from below by the water stop valve.

Further, in the closed state, since the lock portion for preventing the water stop valve body from moving upward is provided, hot water is put into the container body and the internal pressure of the container body rises to seal the container body. Even if a force that moves upward is applied to the portion, the water stop valve body does not move. In addition, since the sealing portion of the water shutoff valve body has a substantially cylindrical shape, as described above, when the internal pressure of the container main body rises, the sealing portion acts to spread outward, and thus the wall surface of the liquid passageway. Therefore, it is possible to reliably maintain or improve the sealing property of the sealing portion and prevent the liquid in the container body from leaking.

Furthermore, since the water shut-off valve body is arranged on the flap for closing the pouring opening which is rotated by operating the operating portion, when the stopper is removed from the container body for cleaning. By opening the flap, the liquid passage is completely exposed. As a result, the inside of the liquid passage can be easily and surely cleaned.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing a liquid container to which an inner plug according to a first embodiment of the present invention is applied.

FIG. 2 is a cross-sectional view showing a released state of the inner plug of FIG.

FIG. 3 is an exploded perspective view of some components of the plug body.

FIG. 4 shows the relationship between the flap and the slide member,
(A) is a side view of a closed state, (B) is a side view of an open state.

FIG. 5 is an enlarged cross-sectional view of a main part in a closed state.

FIG. 6 is an enlarged sectional view of an essential part showing a modified example of the inner plug of the first embodiment.

FIG. 7 is a cross-sectional view showing a liquid container to which the inner plug of the second embodiment is applied.

FIG. 8 is a cross-sectional view showing an open state of the inner plug of FIG.

FIG. 9 is a sectional view of a liquid container to which the stopper of the third embodiment is applied.

[Explanation of symbols]

1 ... Liquid container, 2 ... Container body, 5 ... Shoulder body, 6 ... Lid body, 1
DESCRIPTION OF SYMBOLS 1 ... Inner stopper, 12 ... Stopper, 14 ... Liquid passage, 15 ... Fitting part,
16 ... Spout, 20 ... Mounting ring, 21 ... Stopper cap, 2
2 ... Flap, 24 ... Closure part, 25 ... Through hole, 27 ... Step projection part, 27a ... Locked part, 28 ... Notch groove, 30 ...
Interference protrusions, 31 ... Water stop valve body, 32 ... Valve body, 33 ... Seal part, 34 ... Slide member, 36a ... Lock part, 39
b ... locking step portion, 42 ... air bleeding valve element, 45 ... seal packing, 47 ... spring, 48 ... operation portion, 49 ... projecting portion, 50 ... projecting piece.

─────────────────────────────────────────────────── ─── Continuation of front page (56) References JP-A-6-292637 (JP, A) JP-A-10-108792 (JP, A) Actually open 1-134050 (JP, U) Actually open 57- 126820 (JP, U) Actual development 2-144565 (JP, U) Actual development Sho 62-200565 (JP, U) (58) Fields investigated (Int.Cl. ⁷ , DB name) A47J 41/02 104

Claims (4)

(57) [Claims] 1. A stopper for a liquid container, which releases a liquid in the container body from a pouring port formed at an upper end of a liquid passage communicating with the inside of the container body in a stopper body so as to be able to be poured out and to be closed so as not to leak out, A water shut-off valve body is provided that hermetically closes the upper portion of the liquid passage from above via a seal portion, and the seal portion is deformed by the internal pressure of the container body to be in close contact with the liquid passage wall surface. A valve member for water is disposed on the rotatably disposed flap for closing the inlet, and a slide member for sliding the slider in the horizontal direction by operating the operating portion to rotate the flap is provided. The slide member is provided with a lock portion for preventing upward movement of the water shutoff valve body through the flap when the liquid passage is closed by the water shutoff valve body, and the lock portion is engaged. Locked part to stop Stopper of the liquid container, characterized in that provided on the flap. 2. The stopper for a liquid container according to claim 1, wherein the seal portion has a tubular shape having a substantially J-shaped cross section. 3. The stopper for a liquid container according to claim 1, wherein a fitting portion into which the seal portion is fitted is provided on an upper portion of the liquid passage. 4. The container body is provided with a lid body attached to an upper portion thereof, and a closing portion of the lid body is made to substantially contact with at least a part of the water shutoff valve body or the flap. A stopper for a liquid container according to any one of claims 1 to 3.