JPH0220977Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) The invention relates to a liquid container such as a thermos flask, and more specifically to a liquid container configured to allow liquid to be filled with the stopper attached to the stopper hole of the container body. This invention relates to a liquid injection passage opening/closing device for a liquid container.

(Prior Art) A so-called one-touch type liquid container configured to allow liquid to be filled with the plug attached to the plug hole of the container body has been well known for a long time, as described in Publication of Utility Model Publication No. 11701/1983. It has also been well known that in this type of one-touch type liquid container, a liquid receiving container such as a pot is detachably attached to the upper part of the container body.

(Problems to be Solved by the Invention) In the one-touch type liquid container configured as in the above-mentioned known example, a stopper hole in the container body has a liquid injection passage that communicates between the inside and outside of the container body, and the liquid injection passage is opened and closed. A plug body having a valve body is provided, and the valve body is interlocked with a movable member that slides in the vertical direction while rotating at a predetermined angle in a vertical guide cylinder provided in the plug body, and The valve body is configured so that it repeats opening and closing operations each time the movable member moves downward, but since the valve body repeats the opening and closing operations each time the movable member moves downward, it is difficult to check the open and closed state of the valve body from the outside. This is difficult, and sometimes the liquid receiving container may fit into the container body while the valve body is in the open state. In such a case, the inside and outside of the container body remain in communication, which not only significantly reduces the heat retention ability, but also when the liquid container is placed horizontally.
A problem arises in that internal liquid (eg, boiling water, etc.) inadvertently flows outward.

This invention was made in view of the above points,
The object of this invention is to reliably close the liquid injection passage when the liquid receiving container is attached to a liquid container configured such that a liquid receiving container such as a pot is attached to the upper part of the container body.

(Means for Solving the Problems) In the present invention, as a means for solving the above problems, a liquid injection passage is provided in the stopper hole of the container body to communicate between the inside and outside of the container body, and the liquid injection passage is opened and closed. A plug body having a valve body is provided, and the valve body is interlocked with a movable member that slides in the vertical direction while rotating at a predetermined angle in a vertical guide cylinder provided in the plug body, and In a liquid container configured such that the valve body repeats opening and closing operations each time the movable member moves downward, and a liquid receiving container is detachably attached to the upper part of the container body so as to cover the outside of the stopper. , a part of the stopper protrudes upward from the top surface of the stopper when the valve opens the valve, and the movable member is moved by a pressing force when the liquid receiving container is attached.
A valve closing forcing member is provided that acts to move the valve body downward to a position where the valve can be closed.

(Function) In the present invention, the following effects can be obtained by the above means.

That is, a portion of the stopper protrudes upward from the top surface of the stopper during the opening operation of the valve, and the movable member is moved by the pressing force when the liquid receiving container is attached.
By providing the valve-closing forcing member that acts to move the valve body downward to the position where it can close, when the liquid receiving container is attached, the valve closing forcing member is moved by the pressing force of the liquid receiving container. The downward movement causes the movable member to move downward, and as the movable member moves downward, the valve body that opens and closes the liquid injection passage is reliably closed.

(Embodiments) Hereinafter, some preferred embodiments of the present invention will be described with reference to the accompanying drawings.

Embodiment 1 FIGS. 1 to 4 show a liquid container according to Embodiment 1 of the present invention.

The liquid container of this embodiment has a vacuum insulated double-walled structure in which an inner wall 1a and an outer wall 1b are made of stainless steel plates, and a container body 1 having an annular shoulder member 3 made of synthetic resin at the upper part, The plug body 2 is screwed into a vertically long plug hole 4 formed in the center of the upper part of the plug body. The plug hole 4 becomes an opening for liquid replenishment when the plug body 2 is removed. Further, a cup-shaped liquid receiving container 11 is detachably attached to the annular shoulder member 3 on the upper part of the container body 1 so as to cover the outside of the stopper 2.

The stopper 2 is tightly fitted into the stopper hole 4 via a sealing member 5 attached to the outer periphery of the lower end thereof, and there is a hole inside the stopper 2 that is screwed into the stopper hole 4 of the container body 1. A liquid injection passage 6 configured to communicate between the inside and outside of the container body 1 in the closed state, and the liquid injection passage 6
A space 8 is formed above the space 8 and partitioned off by a partition wall 7. Inlet 6a of the liquid injection passage 6
is opened toward the inside of the container body 1, while the outlet 6b of the liquid injection passage 6 is communicated with the outside via an injection passage 9 formed between the stopper 2 and the stopper hole 4. It's becoming like that. The inlet 6a of the liquid injection passage 6 is opened and closed by a valve body 10 that operates in the vertical direction.

The valve body 10 has a valve stem portion 10a that is connected to the partition wall 7.
It is provided so as to protrude into the space 8 through the space 8, and is opened and closed by a valve opening/closing mechanism A disposed within the space 8.

The valve opening/closing mechanism A includes a guide cylinder 12 vertically installed in the space 8 from the top plate 2a of the stopper 2, and a crown-shaped operation button 13 that slides only in the vertical direction within the guide cylinder 12. engaged with the lower end of the operation button 13;
The movable member 14, which is rotated by a predetermined angle (30 degrees in this embodiment) every time the operation button 13 moves downward, and is connected to the upper end of the valve stem 10a of the valve body 10, the guide tube 12, and the operation button 13 and is engaged with the movable member 14, and is moved upwardly when the valve body 10 is opened, and its downward movement causes the movable member 14 to be moved downwardly (in other words, the movable member 14 is moved downwardly). The valve closing force member 15 acts to cause the valve body 10 to close. The movable member 14 is always urged upward (in other words, in the valve closing direction of the valve body 10) by a spring 26.

Six vertical grooves 16, 16, . Convex strip 1 having portions 17, 17... at the lower end
8, 18... are formed. A locking portion 19 is formed in the intermediate portion of each slide portion 17 to lock a member sliding along the slide portion 17 in a positioned state.
consists of first and second slide parts 17a and 17b sandwiching the locking part 19 (a third
(see Figures and Figure 4).

On the outer circumferential surface of the lower end of the operation button 13, engagement protrusions 20, 20, . In addition, on the lower end surface of this operation button 13,
The middle position of each of the engagement protrusions 20 and the middle position between the adjacent engagement protrusions 20, 20 are set in the slide portion 1.
Sawtooth-like unevenness 21 having the same inclination angle as 7 is formed. Each engagement projection 20 of the operation button 13 acts as a guide member for sliding the operation button 13 only in the vertical direction by engaging with each longitudinal groove 16 of the guide tube 12, and each engagement projection 20 acts as a guide member for sliding the operation button 13 only in the vertical direction. 2
The dimensions are set so that the upper surface of the operation button 13 and the upper surface of the plug body 2 are flush with each other when the upper surface of the operating button 13 and the upper surface of the plug body 2 are in a state in which the upper surface of the operating button 13 and the upper surface of the plug body 2 are flush with each other when the upper surface of the operating button 13 and the upper surface of the plug body 2 are in a state in which the upward movement is restricted by contacting the upper end of each longitudinal groove 16 of the guide tube 12. ing.

The movable member 14 is also crown-shaped like the operating button 13, and can move up and down inside the operating button 13. This movable member 14
Six protrusions 22, 22, . . . , which engage from below with the serrated projections 21 of the operation button 13, are formed on the outer peripheral surface of the lower end portion at equal intervals in the circumferential direction. The slide portion 1 is provided on the upper surface of each protrusion 22.
Inclined surfaces 22a having the same direction and the same inclination as 7 are respectively formed. Then, the movable member 14 is positioned at the top dead center in a state in which each protrusion 22 is engaged with the sawtooth-like unevenness 21 of the operation button 13 in each longitudinal groove 16 of the guide tube 12 (in other words, , the valve body 10 is in the closed state), and the movable member 14 is positioned at the bottom dead center in a state in which each projection 22 is locked with the locking part 19 in each slide part 17 of the guide tube 12 ( In other words, the valve body 10 is in an open state.

Further, the valve closing forcing member 15 has a virtual cylindrical shape, and is positioned upwardly with respect to the protrusions 22, 22, . It has protrusions 23, 23, . . . that respectively engage with each other. An inclined surface 23a facing opposite to the inclined direction of the slide portion 17 is formed on the lower end surface of each of the projecting pieces 23.
The upper part of this valve closing forcing member 15 has its respective protrusions 23 attached to the locking portions 19 of each slide portion 17.
The protrusion 22 in a state of being locked (at this time, the valve body 10
The dimensions are set so that when the valve body 2 is engaged with the valve body (which is in an open state), the valve body 2 can be projected upwardly by a certain amount from the top surface of the plug body 2. Note that when each protrusion piece 23 and the protrusion 22 are in a non-engaged state, the upper surface of the valve-opening forcing member 15 and the upper surface of the plug body 2 are flush with each other. Furthermore, a flange portion 24 having an inverted L-shaped cross section is integrated with the upper end of the valve closing forcing member 15 to cover the gap S interposed between the valve closing forcing member 15 and the upper edge of the space 8. The lower end of the flange portion 24 is provided with an engaging claw that engages with the upper end edge of the space 8 from below and acts to prevent the valve closing forcing member 15 from falling off. 25 is formed.

Next, the operation of the liquid container according to the first embodiment will be explained in detail with reference to FIGS. 4A, 4B, and 4C.

As shown in FIG. 1, when the valve body 10 is in the closed state, the movable member 14 is positioned at the top dead center by the urging force of the spring 26.
That is, as shown in FIG. 4A, each protrusion 22 of the movable member 14 is connected to the operating button 13 in which each engagement protrusion 20 is in contact with the upper end of each vertical groove 16 of the guide tube 12. It is engaged with the sawtooth-like unevenness 21, and is not engaged with each projection piece 23 of the valve closing forcing member 15. At this time, the upper surfaces of the operation button 13 and the valve closing forcing member 15 are flush with the upper surface of the stopper 2, and the container body 1 of the liquid receiving container 11 is flush with the upper surface of the stopper 2.
There are no members that prevent installation.

When dispensing liquid from this liquid container, after removing the liquid receiving container 11 from the container body 1, a pressing force is applied to the operation button 13. Then, the operation button 13 is slid downward due to the engagement between each longitudinal groove 16 of the guide tube 12 and each engagement protrusion 20 fitted in each of the longitudinal grooves 16, and the serrated shape of the operation button 13 is caused to slide downward. Each protrusion 22 of the movable member 14 that is engaged with the unevenness 21 is moved downward. Then, as shown in FIG.
Due to the inclined contact between the protrusions 22 and 22, the urging force of the spring 26 causes the protrusion 22 to move laterally in the direction of arrow X, and at the same time as the pressing force on the operation button 13 is released, the guide cylinder 12 It is guided by each first slide portion 17a and is slid to a position where it is locked by the locking portion 19 as shown in FIG. 4C. As a result, the movable member 14 is rotated by a predetermined angle (30 degrees in the case of this embodiment) and is positioned at the bottom dead center, and the valve body 10 is in the open state as shown in FIG. It is said that The movable member 1
When the first slide portion 17a of the protrusion 22 slides in the operating process of step 4, the protrusion piece 23 of the valve-closing force member 15 is pushed upward by engagement with the protrusion 22, and the upper part of the valve-closing force member 15 is pushed upward by the engagement with the protrusion 22. is projected upward from the upper surface of the plug body 2. Thereby, the open state of the valve body 10 (in other words, the open state of the liquid injection passage 6) can be easily confirmed from the outside.

After that, when you move the operation button 13 down again,
Each protrusion 22 of the movable member 14 that is engaged with the serrated unevenness 21 of the operation button 13 moves downward, and the locking state of the locking portion 19 of each slide portion 17 is released (i.e., the position 2 at the lower end position of the slide portion 17b), the sawtooth-like unevenness 21 and the protrusion 2
2 are in inclined contact with each other, the protrusion 22 moves laterally due to the biasing force of the spring 26, and at the same time as the pressing force on the operation button 13 is released, the guide cylinder 12 further slides to the second position. After being guided by the portion 17b to a position where it engages with the vertical groove 16,
The state returns to the state shown in FIG. 4A, and the valve body 10 is brought into the closed state. At this time, the protruding piece 23 of the valve closing forcing member 15
The pushing up force by the protrusion 22 is released,
The valve closing forcing member 15 is returned to a position where its upper surface is flush with the upper surface of the stopper 2.

Note that if you accidentally screw the liquid receiving container 11 onto the container body 1 while the valve body 10 remains open, as shown in FIGS. 2 and 4,
The liquid receiving container 1
1 is applied to the upper surface of the valve-closing force member 15, and the valve-closing force member 1
5 will be pushed down. Then, the protrusions 22 of the movable member 14 that are engaged with the protrusions 23 of the valve-closing member 15 are moved downward.
The locked state by each locking portion 19 is released. Therefore, as described above, the protrusion 22 is located at the second position of the guide tube 12.
The valve body 10 is guided by the slide portion 17b and engaged with the vertical groove 16 that is allowed to move upward, and the valve body 10 is automatically closed. in this way,
When the liquid receiving container 11 is screwed onto the container body 1, the valve body 10 is always kept in a closed state, and a decrease in heat retention ability and liquid outflow can be reliably prevented.

Embodiment 2 FIGS. 5 and 6 show a liquid container according to Embodiment 2 of the present invention.

In the case of the liquid container of this embodiment, the only difference is the structure of the valve opening/closing mechanism A from that of the first embodiment, and the other parts have the same structure as that of the first embodiment. Therefore, in order to avoid duplication of explanation, only the valve opening/closing mechanism A will be explained below, and explanations of other parts will be omitted.

In the valve opening/closing mechanism A in this embodiment, a valve closing forcing member 15 is disposed on the outer circumferential side of the guide tube 12, and the operation button 13 is connected to the guide tube 1.
It is configured to be able to slide vertically along the inner circumferential surface of 2. Therefore, the vertical grooves 16,1 of the guide tube 12
6... are notched grooves, and each protrusion 2 of the movable member 14
2 is a valve closing forcing member 1 that passes through each longitudinal groove 16 of the guide cylinder 12 in the radial direction and is provided on the outer peripheral side of the guide cylinder 12.
It is configured to be able to engage with each of the protruding pieces 23 of No. 5. Furthermore, an engaging pawl 25 for preventing the valve closing forcing member 15 from falling off is formed on each protrusion 23 . The operation of the valve opening/closing mechanism A having such a configuration is the same as that of the first embodiment described above, so a description thereof will be omitted.

Embodiment 3 FIGS. 7 and 8 show a liquid container according to Embodiment 3 of the present invention.

Also in the case of the liquid container of this embodiment, the valve opening/closing mechanism A
The only difference is the structure of the first embodiment from that of the first embodiment, and the other parts have the same structure as the first embodiment. Therefore, in order to avoid duplication of explanation, only the valve opening/closing mechanism A will be explained below, and explanations of other parts will be omitted.

In the valve opening/closing mechanism A of this embodiment, the valve closing forcing member 15 in the first embodiment is omitted, and the operation button 13 is configured to maintain its function as a valve closing forcing member. That is, the adjacent engagement protrusions 20, 20 on the operation button 13
The movable member 1 is locked to the locking portion 19 of each slide portion 17 of the guide tube 12 at an intermediate portion of the guide tube 12.
Projection piece 27 that can engage with the projection 22 of No. 4 (Example 1)
A protruding piece 23 of the valve closing force member 15 (which functions as the protruding piece 23 of the valve closing force member 15) is integrally provided. Further, within the operation button 13, a display member 2 is configured to be able to move up and down with respect to the upper surface of the movable member 14.
8 is disposed in a state where it is urged upward by a spring 29, and the operation button 13 is placed on the display member 28. A pair of mounting legs 32, 32 are vertically provided on the lower surface of the display member 28, and by inserting the mounting legs 32, 32 into through holes 30, 30 formed on the upper surface of the movable member 14, The display member 28 can rotate together with the movable member 14 and can freely move up and down. A claw portion 33 for preventing slipping off is formed at the lower end of each mounting leg 32. Further, on the upper periphery of the display member 28, "open" and "close" displays are displayed at equal intervals in the circumferential direction (in this embodiment, at 30° intervals) to indicate the open and closed states of the valve body 10. (not shown) are provided alternately. on the other hand,
On the upper surface of the operation button 13, the display member 2
A viewing window 31 is provided so that the ``open'' and ``closed'' indications of 8 can be viewed from the outside. moreover,
In this embodiment, when no pressing force is applied to the operation button 13, the plug body is moved by the biasing force of the spring 29 acting on the display member 28, as shown in the right half of FIG. The dimensions are set so that a part of the cover 2 protrudes from the upper surface of the cover 2.

Next, the operation of the valve opening/closing mechanism in the liquid container according to the third embodiment will be explained in detail with reference to FIGS.

When the liquid receiving container 11 is removed from the container body 1, the operating button 13 is pushed up to the upper limit position by the biasing force of the spring 29 acting on the display member 28, regardless of whether the valve body 10 is open or closed. The stopper body 2 is partially protruded from the upper surface thereof, but as will be described later, the pressing force of the liquid receiving container 11 is applied to the operation button 13.
When the upper surface of the operation button 13 and the upper surface of the plug body 2 are flush with each other, the protrusion of the movable member 14 is 22, 22... are always allowed to deviate from the locking part 19 of the slide part 17.
1 is removed, the valve body 10 is in a closed state. That is, as shown in FIG. 8A, each protrusion 22 of the movable member 14 is engaged with each vertical groove 16 of the guide tube 12 and positioned at the top dead center. At this time, the viewing window 31 of the operation button 13
, the "closed" indication of the display member 28 is displayed.

When dispensing liquid from the liquid container in this state, when a pressing force is applied to the operation button 13, each vertical groove 16 of the guide tube 12 and each engagement fitted in each vertical groove 16 By engaging with the protrusion 20, the operating button 13 is slid downward, and the protrusions 22 of the movable member 14, which are engaged with the serrated projections 21 of the operating button 13, are moved downward. Then, as shown in FIG.
Due to the inclined contact between the protrusions 22 and 22, the urging force of the spring 26 causes the protrusion 22 to move laterally in the direction of arrow X, and at the same time as the pressing force on the operation button 13 is released, the guide cylinder 12 It is guided by each first slide portion 17a and is slid to a position where it is locked by the locking portion 19 as shown in FIG. 8C. As a result, the movable member 14 is rotated by a predetermined angle (30 degrees in the case of this embodiment) and positioned at the bottom dead center, and the valve body 10 is moved as shown in the right half of FIG. The valve is in an open state. At this time,
The operation button 13 is returned to the upper limit position by the biasing force of the spring 29 acting on the display member 28, and the viewing window 3 of the operation button 13 is returned to the upper limit position.
1, the display member 28 rotated by 30 degrees together with the movable member 14 displays an "open" indication.

After that, when you move the operation button 13 down again,
Each protrusion 22 of the movable member 14 that is engaged with each protrusion piece 27 of the operation button 13 moves downward, and the position where the locking state of the locking portion 19 of each slide portion 17 is released (i.e., Due to the fact that the protruding piece 27 and the protrusion 22 are brought into contact with each other in an inclined manner at the time when the second sliding part 17b reaches the lower end position
The protrusion 22 moves laterally due to the biasing force of the spring 26, and at the same time as the pressing force on the operation button 13 is released, it is further guided by the second sliding portion 17b of the guide tube 12 to a position where it engages with the vertical groove 16. After that, the 8th
The state returns to the state shown in Figure A, and the valve body 10 is brought into the closed state. At this time as well, the operation button 13 is returned to the upper limit position by the biasing force of the spring 29 acting on the display member 28.

Note that if the liquid receiving container 11 is screwed onto the container body 1 by mistake while the valve body 10 remains open, the pressing force due to the screwing of the liquid receiving container 11 will be applied above the stopper 2. Operation button 1 protruding from
3, and the operation button 13 is pressed down. Then,
The protrusions 22 of the movable member 14 that are engaged with the protrusions 27 of the operation button 13 are moved downward, and the locking state by the locking portions 19 is released. Therefore, as mentioned above, the protrusion 22 is connected to the guide tube 1.
The valve body 10 is guided by the second slide portion 17b of No. 2 and engaged with the vertical groove 16 that is allowed to move upward, and the valve body 10 is automatically closed. That is, in this embodiment, the operation button 13 also functions as the valve closing forcing member 15 in the first embodiment. in this way,
When the liquid receiving container 11 is screwed onto the container body 1, the valve body 10 is always kept in a closed state, and a decrease in heat retention ability and liquid outflow can be reliably prevented.

It goes without saying that the present invention is not limited to the configurations of the embodiments described above, and that the design can be modified as appropriate without departing from the gist of the invention.

(Effect of the invention) As described above, according to the invention, a liquid injection passage 6 to communicate between the inside and outside of the container body 1 and a valve for opening and closing the liquid injection passage 6 are provided in the stopper hole 4 of the container body 1. body 10
a movable member 14 that slides in the vertical direction while rotating at a predetermined angle within a vertical guide cylinder 12 provided in the plug body 2; and the valve body 10.
and so that the valve body 10 repeats opening and closing operations each time the movable member 14 moves downward, and the valve body
In a liquid container in which a liquid receiving container 11 is removably attached so as to cover the outside of the stopper 2, a portion of the stopper 2 protrudes upwardly from the upper surface of the stopper 2 when the valve member 10 is opened. A valve-closing forcing member 15 is provided that acts to move the movable member 14 downward to a position where the valve body 10 can close due to the pressing force when the liquid receiving container 11 is attached. When installed, the valve closing force member 1
5 is moved downward by the pressing force of the liquid receiving container 11, the movable member 14 is forcibly moved downward, and the valve body 10 is surely operated to close as the movable member 14 is moved downward. If,
Even if you forget to close the valve body 10, by attaching the liquid receiving container 11, the valve body 10 will be automatically closed, thereby preventing a drop in heat retention ability and accidental liquid leakage. It has practical effects.

[Brief explanation of the drawing]

FIG. 1 is a vertical sectional view of the top of the liquid container according to the first embodiment of the present invention, FIG. 2 is a vertical sectional view of the top of the liquid container shown in FIG. 4A to 4C are exploded views of the valve opening and closing mechanism shown in FIG. 3, and FIG. A longitudinal sectional view of the upper part of the container (the left half shows the liquid receiving container installed, the right half shows the valve open state), and Figure 6 is a cross-section of a part of the valve opening/closing mechanism in the liquid container shown in Figure 5. 7 is an exploded side view, FIG. 7 is a vertical sectional view of the upper part of the liquid container according to the third embodiment of the present invention (the left half shows the liquid receiving container installed, the right half shows the valve open state), and FIGS. 7C is a developed view of the valve opening/closing mechanism in the liquid container shown in FIG. 7. 1...Container body, 2...Bung body, 4...Bung hole, 6
...Liquid injection passage, 10...Valve body, 11...Liquid receiving container, 12...Guide tube, 14...Movable member, 15...
...Valve closing force member.

Claims (1)

[Scope of utility model registration request] A stopper 2 is provided in the stopper hole 4 of the container body 1, and the stopper 2 has a liquid injection passage 6 that communicates between the inside and outside of the container body 1, and a valve body 10 for opening and closing the liquid injection passage 6. A movable member 1 that slides in the vertical direction while rotating at a predetermined angle within a vertical guide tube 12 provided in the
4 and the valve body 10 are configured so that the valve body 10 repeats opening and closing operations each time the movable member 14 moves downward, and the outside of the stopper body 2 is covered on the upper part of the container body 1. In the liquid container to which the liquid receiving container 11 is detachably attached in this manner,
A portion of the stopper 2 protrudes upward from the top surface of the stopper 2 when the valve body 10 is opened, and the movable member 14 is moved by the pressing force when the liquid receiving container 11 is attached to the valve body. 1. A liquid injection passage opening/closing device for a liquid container, characterized in that a valve closing force member 15 is provided which acts to move the valve 10 downward to a position where the valve can be closed.