JP2003212260A - Inner stopper mechanism for liquid container - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an inner stopper mechanism which is safe, easy to handle, and makes it possible to open and close a lid covering a pouring part from above by one hand, the inner stopper mechanism provided for the inner stopper of a liquid container having a liquid passage inside and making it possible to pour liquid while the inner stopper is fitted on an opening 7 of the liquid container. <P>SOLUTION: The inner stopper 6 is provided with a valve 12 to which energy is applied by a spring 13 in the direction for making the valve keep closing the liquid passage 11, and the lid 16 covering the pouring part from above is pivoted on part of the inner stopper 6 via a shaft 17 horizontally placed. By interlocking the lid 16 swinging on the shaft 17 and the valve 12 attached to the inner stopper 6, the valve comes to open when the lid 16 is opened, allowing liquid to pour out. Specifically, a valve lever 12a of the valve which is constantly spring-biased upward by the spring 13 to close the liquid passage is projected upward, an operating lever 19 is arranged in the middle between the shaft 17 of the lid covering the pouring part from above and the valve lever 12a, and part of the operating lever 19 is locked on the lid to force the operating lever 19 to make seesaw move for opening the valve lever 12a. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an inner plug attached to an opening of a liquid container, which is provided with a valve for opening and closing the liquid passage and forming a liquid passage in the inner plug itself. TECHNICAL FIELD The present invention relates to an inner stopper mechanism for a liquid container capable of injecting a liquid with a stopper attached, and more particularly to an inner stopper mechanism provided with a lid for covering a liquid injection portion flowing out from the inner stopper.

[0002]

2. Description of the Related Art A liquid passage C having a valve B is formed inside an inner stopper A as shown in FIG. 12 for an inner stopper attached to an opening of a liquid container such as a thermos bottle. It is known that the entire liquid container can be tilted while being attached so that liquid can be injected from the liquid injection port E formed in the shoulder member D of the liquid container. The valve B arranged in the liquid passage C has a spring J
Is always urged in the direction to close the liquid passage,
The valve is opened by operating the operating section K with fingers.
The operation section K is provided with a locking means, and once the valve is opened, the state is maintained until the next operation is performed. The liquid container shown in FIG. 12 is a thermos bottle using a vacuum double bottle G as an inner container, and a handle F is formed integrally with the shoulder member D. The conventional liquid container shown in FIG. 13 has a removable inner plug A attached to the opening and a horizontal axis H above it.
It is covered by a lid I which rotates. The conventional inner stopper for liquid container shown in FIG. 14 is provided with a lever L that rotates about the front portion as a fulcrum, and the lever L pushes down the valve B to open the liquid passage C.

Further, as disclosed in Japanese Utility Model Laid-Open No. 61-184546, a lid is provided to cover the portion above the portion where the content liquid flowing out from the inner stopper is poured, and the valve is operated in conjunction with the horizontal movement of the lid. The idea of opening and closing is also known. In addition, the actual Kaisho 5
As disclosed in JP-A-1-109459, a liquid passage is formed inside an inner plug having no valve mechanism, and the tip portion of a liquid injection pipe having the extended liquid passage is used as a liquid injection port. It is known that the lid is opened and closed by a lid that is horizontally supported.

[0004]

[Problems to be Solved by the Invention]
A conventional liquid container inner stopper mechanism disclosed in Japanese Patent No. 46 is
The lid or cover is constantly moved in the horizontal direction to open and close the upper portion of the liquid injection portion, and the cam mechanism interlocks the movement of the lid in the horizontal direction with the movement of the valve of the inside plug. Therefore, there is an inconvenience that an operation with both hands is always required to open the lid and make the liquid injectable state, and the operation of closing the lid again after placing the liquid container after pouring is completed. 51-10994
In the inner stopper structure disclosed in No. 59, for example, the lid can be opened and closed with the fingers of the hand holding the handle to inject the liquid, but since the liquid passage of the inner stopper is always open, it is possible to fall over. There is a problem such as liquid leakage.

In view of the above-mentioned drawbacks of the conventional inner stopper mechanism of the liquid container, the present invention is an inner stopper which forms a liquid passage therein and can inject liquid without removing it from the liquid container. You can open and close the lid that covers the upper part of the container with one hand, open and close the valve provided in the liquid passage in conjunction with the opening and closing operation of the lid, hold the liquid container with one hand, and open the lid with your finger. In addition, it is an object of the present invention to provide a safe and easy-to-use inner stopper mechanism of a liquid container, in which the lid is naturally closed to close the liquid passage after liquid injection.

[0006]

In order to achieve the above object, the present invention is directed to a part of an inner plug having a valve 12 which is urged by a spring 13 in a direction to always close the liquid passage 11 and a liquid injection portion. An opening / closing operation of the lid 16 which pivots a lid 16 for covering the upper part of the above with a horizontal shaft 17 and rotates about the horizontal shaft 17 and the inner plug 6
By interlocking the movement of the valve 12 provided in the above, the valve 16 is opened against the force of the spring 13 biased in the closing direction by opening the lid 16 to enable liquid injection.

As a concrete structure, the valve rod 12a of the valve 12 which is always urged upward by the spring 13 to close the liquid passage is projected upward, and the shaft 17 of the lid for covering the liquid injection portion is provided. An operating rod which is rotatably supported by a shaft 18 on a part of the inner plug and which performs a seesaw motion at an intermediate position of the valve rod 12a.
Place 19 Then, by engaging a part of the operating rod 19 with the lid 16, the operating rod 19 is interlocked with the opening / closing operation of the lid, and the valve rod 12a protruding upward is pushed down by the movement of the operating rod 19 performing a seesaw motion. So that the solution can be poured.

The spring 25 for urging the valve 24 in the direction of closing the liquid passage 11 is not limited to the spring urging upward, but may be the spring 25 urging always downward to close the liquid passage. In this case, the valve rod 24a of the valve 24 closing the liquid passage.
By engaging a part of the lid 16 with the lid 16 and pulling up the valve rod 24a, the liquid passage is opened so that the liquid can be injected. Also,
When the tip portion of the liquid injection pipe 14 in which the liquid passage 11 of the inner plug is extended is used as the liquid injection port 15 and the tip of the liquid injection pipe is covered by the rotating lid 16, the liquid injection passage is provided in the shoulder member 3. Need not be formed. Note that if a lid is provided with resistance means for opening and closing the lid covering the liquid filling portion immediately before the lid covers the liquid filling portion, the force of the spring 25 causes the lid 16 to close shockly. Can be prevented.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the inner stopper mechanism of a liquid container according to the present invention will be described below with reference to the accompanying drawings.
FIG. 1 is a vertical cross-sectional view of a thermos bottle using a vacuum double bottle as an example of a liquid container having an inner stopper mechanism according to the present invention.
Is an enlarged view of only the upper portion of FIG. 1.

In the liquid container shown in FIG. 1, a vacuum double bottle is arranged as a liquid container 2 inside the outer case 1, a shoulder member 3 is attached to the upper end of the outer case 1, and the shoulder member 3 serves as a container for the liquid container 2. Holds the upper end. 4 is a tightening ring that is screwed onto the shoulder member and holds the shoulder member at the upper end of the outer case,
A separately formed handle 5 is attached to the shoulder member 3. An opening 7 corresponding to the opening of the liquid container is formed in the central portion of the shoulder member, and the inside plug 6 is attached to this opening 7. That is,
A large-diameter recess 8 is formed on the upper surface of the shoulder member, and the inside plug 6 is screwed into the recess 8 to seal the opening 7.

The inner plug 6 screwed to the shoulder member has a small diameter portion 6a which fits into the opening 7 and a large diameter portion 6b which fits into the recess 8 of the shoulder member 3.
The male screw formed on the large-diameter portion 6b and the female screw formed on the recess 8 are screwed together, and the packing 9 attached to the base of the small-diameter portion 6a is pressed against the opening 7 to come into close contact with the liquid. The sealed state of the container is realized. The upper end of the inner stopper projects from the upper surface of the shoulder member, and a stopper cover 10 having the appearance adjusted to match the outer shape of the shoulder member is fixed to the protruding portion.

The small-diameter portion 6a entering the opening 7 has a tubular shape, and the inside thereof serves as a liquid passage 11, and a valve 12 for closing the liquid passage 11 is arranged at the lower end opening portion of the small-diameter portion 6a.
The valve rod 12a of the valve 12 penetrates the central cylinder 6c of the inner plug 6 and the upper end portion thereof projects upward. The valve 12 itself has a disk shape larger than the inner diameter of the small diameter portion, and is biased upward by a spring 13 so as to be in close contact with the lower end opening portion of the liquid passage 11 from below to constantly close the liquid passage. In other words, by pushing down the valve rod 12a projecting upward, the valve closing the lower end opening of the liquid passage moves downward, and the lower end opening of the small diameter portion 6a of the inner plug 6 is opened. .

A stopper cover 10 fixed to the upper end of the inner stopper 6.
Is molded separately from the inner stopper 6 and is integrated by assembly. A liquid injection pipe 14 is formed in the plug cover 10 in such a manner that the liquid passage 11 of the inner plug 6 is extended, and a tip portion thereof serves as a liquid injection port 15. Of the stopper cover that covers the upper surface of the inner stopper 6, a central groove portion is formed in the front-rear direction that passes through the center and omits the ceiling wall, and has a plate shape with a constant width so as to cover the upper portion of the central groove. A lid 16 formed in a lever shape is arranged.

The lever-shaped lid 16 is axially attached to the inner plug 6 or the inner plug cover 10 which is integral with the inner plug by a horizontal shaft 17 at a position closer to the back than the valve rod 12a.
The front part can be lifted by pushing the rear part. That is, the lever portion 16a formed on the lever-shaped rear surface is
By operating with the thumb of the hand holding the handle 5, the axis
By vertically rotating about 17 and opening the front end portion of the lid covering the liquid injection port 15 at the tip of the liquid injection pipe 14, and inclining the entire liquid container, liquid injection becomes possible. The shaft 17 that pivotally supports the lid 16 does not necessarily have to be a single shaft that passes through it, and although not shown, it should be a shaft that should be pivotally attached to a recess formed in a part of the plug cover 10. You can

An actuating rod 19 pivotally supported by a shaft 18 in a direction parallel to the shaft 17 and performing a seesaw motion is arranged at an intermediate position between the shaft 17 supporting the lid 16 and the valve rod 12a. The tip of the operating rod 19 that performs the seesaw motion on the rear side of the shaft 18 is the shaft 17
And the operating claw 20 formed on a part of the lid 16 at an intermediate position between
And a portion of the actuating rod 19 on the front side of the shaft 18 is arranged close to above the valve rod 12a. Therefore, as shown in FIG. 3, when the lever portion 16a of the lid 16 is pushed down and pivoted to the right in the drawing to open the lid, the operating claw 20 of the lid 16 lifts the right end side of the operating rod 19 beyond the shaft 18. Rotate to the left. When the operating rod 19 is rotated leftward, the left side (front side) of the shaft 18 is lowered and comes into contact with the upper end of the valve rod 12a. Then, the valve rod 12a is pushed down against the force of the spring 13 by the force of opening the lid 16 to open the lower end of the inner plug which is the inlet of the liquid passage 11.

When the pressing of the lever portion 16a of the lid 16 is released after the liquid has been poured, the operating rod 19 is pushed back by the elastic force of the spring 13 and pivots to the right in the drawing. The operating claw 20 formed on the lid 16 is pushed down, and the lid 16 is naturally closed. At this time, if the operating rod 19 and the lid 16 can freely rotate, the lid 16 will close vigorously against the user's intention. In order to solve this problem, if a resistance means is provided to provide resistance to the opening / closing operation of the lid immediately before closing the upper portion of the liquid injection portion, the lid 16 will be closed gently.

With respect to the resistance means, in the embodiment shown in FIGS. 1 to 3, a spring piece 21 protruding upward from the operating rod 19 is used.
The spring piece 21 is brought into contact with the back surface of the lid 16, and a projection 22 on which the spring piece 21 abuts is formed on the back surface of the lid immediately before the lid closes above the liquid injection portion. As a result, a resistance force is generated when the spring piece 21 gets over the projection 22, and the lid is prevented from being shockedly closed.
When the operating rod 19 is molded from a synthetic resin material, the resin spring can be formed by simply molding the spring piece 21 integrally. In addition to the above structure, it is possible to adopt a structure in which a resistance member due to friction is provided on the side surface of the lever-shaped lid, for example.

In view of the function of the liquid container, if the lid can be allowed to be closed vigorously, the resistance means may not be provided. That is, in the embodiment shown in FIG. 4, the spring piece 21 is not formed on the operating rod 19. Further, in the illustrated embodiment, an injection pipe is formed in the stopper cover 10, and for example, it is not necessary to form a gutter-shaped injection portion in the shoulder member. Liquid may be injected from the liquid injection portion formed on the member, and the upper portion thereof may be covered with the lid 16.

5 and 6 are vertical sectional views showing another embodiment of the present invention. In the inner stopper mechanism of this embodiment, the liquid passage is always closed by a valve that is urged downward, and the liquid passage is opened by pulling up the valve to enable liquid injection. That is, the small-diameter portion 6a of the inner plug 6 has a bottom, a lower end opening 23 is formed in the bottom wall, a valve 24 is arranged above the bottom wall, and the valve 24 closes the lower end opening 23. The valve 24 for closing the lower end opening 23 includes springs 25, 25 arranged between the stopper cover 10 which is a part of the inner stopper and a part of the valve rod 24a.
The lower end opening is always closed by always urging downward. Then, a lever-shaped lid 16 that rotates about the shaft 17
An operating claw 20 is formed on the valve, and the operating claw 20 and the valve 24 are engaged with each other. Specifically, it is brought into contact with the lower surface of the spring receiver 26 fixed to the valve rod 24a. As a result, the lever portion 16a of the lid 16
When is pressed to rotate about the shaft 17, the valve 24 is pulled up by the operating claw 20 against the elastic force of the spring 26, and the lower end opening 23 which is the inlet of the liquid passage 11 of the inside plug is opened. It Therefore, the internal solution in the liquid container is injected from the liquid passage 11 into the injection pipe.
It is possible to inject liquid to the outside of the device through the injection port 15 through the injection port 14.
When the pressing of the lever 16a of the lid 16 is released, the valve 24 is pushed down by the elastic force of the spring 25 and the lower end opening 23 is closed.
Although the inner stopper mechanism of the embodiment shown in FIGS. 5 and 6 does not show a resistance means for opening and closing the lid, for example, a resistance means for generating a frictional force between the stopper cover 10 and the lid 16 is provided. It is good to have it.

Among conventional liquid containers, mainly hand-pot type thermos bottles, one in which a handle is integrally formed on a shoulder member is widely used. However, in such a case, the die becomes large in size, and it is necessary to select a material having strength of the handle and accuracy of the shoulder member as a molding material, which is one of the causes of cost increase. It is also known that the handle is screwed to the body at a position away from the shoulder member, but such a product does not have a sense of unity with the shoulder member and is a product that gives a completely different impression in terms of design. is there.

In contrast to the conventional product in which the handle is integrally molded with the shoulder member, the liquid container of the illustrated embodiment has a structure in which the shoulder member 3 and the handle 5 molded as separate parts are fixed with a simple structure. Has been adopted. As the mounting structure for the shoulder member 3 and the handle 5, three mounting structures are illustrated in FIGS. 7 to 11. In the structure shown in FIG. 7 and FIG. 8, a cutout recess 27 is formed in the upper rear surface of the shoulder member 3, and a fitting portion 5a shaped to fit in the cutout recess 27 is formed at the upper end of the handle 5.
Vertical ribs 28 are formed on the left and right inner side surfaces of the cutout recess 27, and a concave groove 29 into which the rib 28 is fitted is provided on the side surface of the fitting portion 5a of the handle 5. To assemble this handle structure, the fitting portion 5a of the handle 5 is inserted into the cutout recess 27 with the rib 28 of the cutout recess 27 formed in the shoulder member fitted in the recess groove 29 formed in the handle 5. , Screws from below the shoulder member
Fix at 30. With this structure, the front and rear and right and left movements are restricted by the fitting of the rib and the concave groove, and the fixing strength of the handle can be improved by fixing the screw 30.

In the structure shown in FIGS. 9 and 10, a pair of left and right hooks 31 and 31 are projected to the upper rear surface of the shoulder member 5 toward the rear direction, and the upper end portion of the handle 5 is horizontally fitted. Holes 32 are provided, and locking portions are provided on both left and right side walls of the fitting hole 32. This form uses the hook 31 of the shoulder member as the handle 5.
Inserted into the fitting hole 32, the two are fixed with screws 30 from below the shoulder member 3 in a state where the hook 31 is engaged with the locking portion 33. Further, the seat 31a portion of the hook 31 is slightly projected, and the seat 31a portion is fitted into the fitting hole 32, thereby improving the effect of preventing rattling. In the handle mounting structure according to the embodiment shown in FIGS. 9 and 10, the handle is shouldered due to the synergistic mounting strength of the locking strength and locking direction by the hook and the locking strength and locking method by the screw 30. It is firmly fixed to the member.

In the embodiment shown in FIG. 11, a horizontal fitting cylinder 34 is formed on the back surface of the shoulder member 3 by protrusion molding, and a fitting hole 35 is formed from the front end face of the handle toward the back surface to fit the fitting member. Tube 34
The fitting hole 35 and the fitting hole 35 are relatively tightly fitted to each other. By fitting the fitting cylinder 34 and the fitting hole 35, movements other than the movement in the cylinder direction, that is, the forward and rearward directions are restricted.
Moreover, the screw 30 reliably regulates the movement in the forward and rearward directions and firmly fixes the movement. As described above, in the mounting structure of the shoulder member 3 and the handle 5 shown in FIGS. 7 to 11, the shoulder member 3 and the handle 5 which are molded as separate members are coupled by the composite locking means having different holding directions. Since it is assembled by assembling, it is possible to firmly assemble without rattling, and the shoulder member 3 and the handle 5 can be molded by selecting preferable materials for each.

[0024]

According to the inner stopper mechanism of the liquid container of the first aspect of the present invention, the lid for covering the upper portion of the liquid injection portion is opened and closed by operating the finger holding the liquid container, and the lid is opened and closed. The valve that closes the liquid passage of the inner plug can be opened in conjunction with Therefore, it is possible to inject liquid by holding the liquid container equipped with the inner stopper that constantly closes the liquid passage with one hand and tilting it as it is, and if you release your hand after injecting the liquid, the valve and lid will be opened by the spring force of the valve mechanism. There is an effect that it can be conveniently handled, such as being closed.

According to the second aspect of the invention, it is possible to realize the inner stopper mechanism capable of implementing the invention of the first aspect with a relatively simple structure in which the operating rod for performing the seesaw motion is arranged. There is an effect that can be done.

According to the third aspect of the invention, in addition to the effect of the first aspect of the invention, it is not necessary to form, for example, a gutter-shaped liquid injection portion on the shoulder member of the liquid container, and it is relatively possible to use the lid. The liquid injection port of the small liquid injection pipe can be opened and closed with certainty, and the lid can be made into a narrow lever shape for convenient handling.

According to the invention described in claim 4, contrary to the invention described in claim 2, the inner stopper of the liquid container which closes the liquid passage by always urging downward is provided. The described invention can be implemented with a simple structure.

According to the fifth aspect of the present invention, the valve and hence the lid are not closed by shock due to the force of the spring built into the inner plug during operation, so that the valve can be used safely. There is an effect that can be made.

[Brief description of drawings]

FIG. 1 is a vertical cross-section of an entire liquid container equipped with an inner stopper according to the present invention,

2 is an enlarged sectional view of only the upper part of the liquid container shown in FIG.

FIG. 3 is a vertical sectional view of only the upper portion of the liquid container with the lid open.

FIG. 4 is a vertical sectional view in which a resistance means for opening and closing the lid is omitted.

FIG. 5 is a vertical cross-sectional view of only the inner plug, showing another embodiment of the present invention.

6 is a vertical cross-sectional view of FIG.

FIG. 7 is an exploded perspective view of a shoulder member and an upper part of a handle;

8 is a vertical cross-sectional view of FIG.

9 is an exploded perspective view of a shoulder member and an upper part of the handle, which is different from FIG.

FIG. 10 is a vertical cross-sectional view of FIG.

FIG. 11 is a vertical sectional view of only an upper portion of a liquid container having a shoulder member and another attachment structure of a handle;

FIG. 12 is a vertical sectional view of only an upper portion of a liquid container having a conventional inner stopper mechanism,

FIG. 13 is a sectional view of the body of only the upper part of a liquid container showing an example with a conventional lid,

FIG. 14 is a vertical cross-sectional view showing another example of a conventional inner plug.

[Explanation of symbols]

1 ... Outer body, 2 ... Liquid container, 3 ... Shoulder member, 4 ... Tightening ring, 5 ... Handle, 6 ... Inner plug, 7 ... Opening, 8 ... Recess, 9 ... Packing, 10 ... Plug cover, 11 ... Liquid passage,
12 ... Valve, 13 ... Spring, 14 ... Liquid injection pipe, 15 ... Liquid injection port, 16 ... Lid, 17, 18 ... Shaft, 19 ... Operating rod, 20 ... Operating claw, 21 ... Spring piece, 22 ... Protrusion, 23 … Bottom opening,
24 ... Valve, 25 ... Spring, 26 ... Spring receiver, 27 ... Notch recess, 28 ... Rib, 29 ... Groove, 30 ... Screw, 31 ... Hanging claw, 32 ... Fitting hole, 33 ... Locking part, 34 … Mating tube, 35
… Mating hole.

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Masahiro Yoshida             Elephant 1-20-5 Tenma, Kita-ku, Osaka City, Osaka Prefecture             In Mahobin Co., Ltd. (72) Inventor Hiroshi Yoshizawa             Elephant 1-20-5 Tenma, Kita-ku, Osaka City, Osaka Prefecture             In Mahobin Co., Ltd. F-term (reference) 3E084 AA04 AA12 AA32 AB01 BA02                       CA01 DA01 DB17 EA02 EB02                       FA06 FC16 GA07 GB07 GB25                       HA04 HB04 HD02 KB01 LA18                       LB02 LB07 LE04                 4B002 AA02 BA17 CA24

Claims (5)

[Claims] 1. A lid for covering an upper portion of a liquid injection portion is axially supported by a horizontal shaft on a part of an inner plug having a valve which is always biased by a spring in a direction for closing the liquid passage. The opening / closing operation of the lid that rotates around the axis of the valve and the valve provided in the inner stopper are interlocked, and the valve is opened against the force of the spring that is biased in the direction of closing by opening the lid to inject liquid. An inner stopper mechanism for a liquid container, which is capable of enabling. 2. A valve which is constantly urged upward by a spring to close the liquid passage so that the valve rod of the valve is projected upward, and the pivot shaft of the lid covering the liquid injection portion and the valve rod. An operating rod that is pivotally supported by a part of the inner plug to make a seesaw motion at an intermediate position of the above, and engages a part of the operating rod with the lid to interlock the operating rod with the opening / closing operation of the lid, 2. The inner stopper mechanism of the liquid container according to claim 1, wherein the valve rod protruding upward is pushed down by the operating rod to make it possible to inject liquid. 3. The liquid injection pipe having an extended liquid passage of the inner plug serves as a liquid injection port, and the rotating lid covers the liquid injection pipe. The inner stopper mechanism of the liquid container described. 4. A valve is provided which closes a liquid passage by constantly urging downward by a spring, and by engaging a valve rod of the valve with a part of the lid, the lid and the valve rod are interlocked, The inner stopper mechanism of the liquid container according to claim 1, wherein the valve rod is pulled up by opening the liquid passage to open the liquid passage so that the liquid can be injected. 5. A resistance means for providing a resistance to the opening and closing of the lid at the position immediately before the lid closes the liquid filling portion with respect to the opening and closing operation of the lid covering the liquid filling portion by rotation. The inner stopper mechanism of the liquid container according to claim 1.