JPH0611643U - Liquid container stopper structure - Google Patents

Abstract

(57) [Summary] [Structure] Each of the upper and lower parts outside the plug 10
An annular upper packing 20 and a lower packing 21 are provided, the upper packing 20 is seated on the edge of the opening 1a of the container body 1, and the lower packing 21 is located below the plug insertion wall 3a of the inner container 3 into which the plug 10 is inserted. The adiabatic space 22 is characterized by making a portion abutted and surrounded by the upper packing 20, the lower packing 21, the plug body 10 and the plug insertion wall 3a of the inner container 3. [Effects] The upper and lower packings are surely sealed, and the heat insulation space prevents convection with the inside of the container body to improve the heat retention / cooling effect.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a plug structure of a liquid container such as an air pressure liquid container, a thermos bottle, a water bottle for keeping heat and the like, in which a liquid content in a container body is discharged from a discharge pipe by a compressed air through a discharge passage.

[0002]

[Prior art]

 Conventionally, as a plug structure of this type of liquid container, the structure shown in FIG. 11 is known. The plug A of this one is removably inserted into the opening C of the container main body B, and an annular upper packing D is attached to the upper part of the outer periphery of the plug A to attach the plug A to the container main body B. The upper packing D is seated on the edge of the opening C of the container body B (opening of the liquid supply port of the lower opening member E) in the state of being fitted into the opening C of the above.

[0003]

[Problems to be solved by the device]

 However, the above-mentioned conventional plug A has only one upper packing D, which is to be seated on the edge of the opening C of the container body B, and the inner container F constituting the container body B is inserted. Since there is no packing that abuts the lower part of the wall G, the sealing property of the upper packing D is weakened due to the swinging of the container body B when being carried, and the outside air is filled with liquid inside the container body B. However, there is a problem in that the heat insulates and the cold insulation effect is reduced due to the invasion toward.

Further, since the portion below the upper packing D of the plug A communicates with the inside of the container body B, convection occurs between the inside of the container body B and the content liquid in the container body B is heated. In the case of, the temperature was lowered, and in the case of the cooling liquid, the temperature was raised, and there was a problem that the heat retention effect was reduced.

The present invention intends to solve all of the above problems, and provides a plug structure in which the sealing property of the packing is ensured and the heat retention effect is improved.

[0006]

[Means for Solving the Problems]

 In order to solve the above-mentioned problems, the present invention provides a stopper structure for a liquid container, which has a stopper body that is removably inserted into an opening of a container body that forms an insulating container with an outer container and an inner container. An annular upper packing and a lower packing are provided on each of the outer upper and lower parts, the upper packing is seated on the opening edge of the container body, and the lower packing is the plug insertion wall of the inner container into which the plug is inserted. It is abutted to the lower part of the container, and the part surrounded by the upper packing, the lower packing, the plug, and the plug insertion wall of the inner container is a heat insulating space.

It is preferable that an inward bending protrusion is formed in the lower portion of the plug insertion wall of the inner container, and the lower packing is seated on the upper step of the bending protrusion.

The stopper is provided with an engaging portion that engages and disengages with an engaged portion provided at an opening edge of the container body by rotating the stopper. It is preferable that the upper packing and the lower packing provided on the plug are configured to be pressed and sealed by the plug when the engaging portion is engaged.

[0009]

【Example】

 An embodiment of the present invention will be described below with reference to FIGS. FIG. 2 is a vertical cross-sectional view of the plug body according to the present invention inserted into the opening of the container body, FIG. 1 is an enlarged cross-sectional view of the vicinity of the plug body in FIG. 2, and FIG. 3 is a plan view of the lid body removed. 4 and 5 are exploded perspective views of the stopper body and the lower opening member, and FIG. 5 is a longitudinal sectional view of an essential part showing a connected state of the container body and the stopper body.

In FIG. 2, a so-called air pressure type liquid container is illustrated as the liquid container, but the present invention can also be applied to a non-pneumatic type thermos bottle, a heat retaining water bottle and other liquid containers. In FIG. 2, the liquid container has an outer container 2 and an inner container 3 made of stainless steel and having a vacuum insulation double-wall structure, and a lower opening member 4 mounted and fixed on the upper and lower parts of the inner and outer containers 3 and 2. The container body 1 is composed of a container body 1, a lid 5 having a bellows-type compressed air source 6 built in on the lower surface thereof, and a plug body 10 which is removably inserted into the opening 1a of the container body 1.

As shown in FIGS. 2 and 5, the lower opening member 4 and the outer container 2 are fixed by screws 29 screwed in from a plurality of positions above the lower opening member 4. The central portion of the lower opening member 4 is formed with an opening 1a of the container body 1 including the upper openings of the inner and outer containers 3 and 2.

The lid 5 is pivotally attached to the upper rear side of the container body 1 (lower opening member 4) by a hinge mechanism 7. The hinge mechanism 7 is composed of a hinge piece 7b pivotally attached to the lid 5 side by a hinge pin 7a so as to be rotatable in an arc, and a box-shaped hinge piece receiving portion 7c formed on the container body 1 side. The hinge piece 7b is detachably engaged with the hinge piece receiving portion 7c. That is, the engagement piece 7d formed on the hinge piece 7b is engaged with the engagement portion 7e of the hinge piece receiving portion 7c to hinge-connect, and the engagement piece 7d is pressed to engage with the engagement portion 7e. The lid 5 can be released and the entire lid 5 can be removed from the container body 1. Reference numeral 8 denotes a lid lock member provided on the front portion of the lid body 5.

An annular upper packing 20 and a lower packing 21 are provided on the upper part and the lower part, respectively, on the outside of the plug body 10. The upper packing 20 is seated on the edge of the opening 1a of the container body 1, and the lower packing 21 is The portion enclosed by the upper packing 20, the lower packing 21, the plug body 10 and the plug insertion wall 3a of the inner container 3 is abutted against the lower portion of the plug insertion wall 3a of the inner container 3 into which the plug 10 is inserted. It is as space 22.

An inwardly bent ridge 1b is formed at the lower part of the plug insertion wall 3a of the inner container 3, and the lower packing 21 is seated on the upper step 9 of the fold 1b. However, the lower packing 21 may not be seated on the upper step 9 of the bent protrusion 1b.

The stopper 10 has a liquid passage 11 therein, a pumping pipe 12 extending vertically, and a spouting pipe 13 extending horizontally. Further, a discharge pipe 15 is connected to the tip of the discharge pipe 13 via another discharge pipe 14. The pumping pipe 12, the liquid passage 11, the discharge pipes 13 and 14, and the discharge pipe 15 constitute a discharge passage 16 for the content liquid.

The stopper 10 is provided with an engaging portion 41 that engages with the engaged portion 40 provided at the edge of the opening 1a of the container body 1 in a disengageable manner by rotating the stopper 10. The engaging portion 41 is provided, and when the engaging portion 41 and the engaged portion 40 are engaged, the upper packing 20 and the lower packing 21 provided on the plug 10 are pressed and sealed by the plug 10. Is configured.

That is, as shown in FIGS. 4 and 5, the engaging portion 41 provided on the plug body 10 has an outer periphery of a ring body 42 rotatably provided around the body portion 10 a of the plug body 10. A helicoid ridge is formed at a diameter position of the side wall 42a, and a knob 43 for rotating operation is formed on the upper surface of the ring body 42. The ring body 42 has an annular groove 44 formed on the inner peripheral surface, which is forcibly fitted to the outer peripheral portion of the flange 45 of the plug body 10 in a rotatable manner. On the other hand, as shown in FIGS. 4 and 5, the engaged portion 40 provided at the edge of the opening 1a of the container body 1 is formed in a concave groove shape at the opening edge of the lower opening member 4 forming the container body 1 in the embodiment. Has been done.

Therefore, the plug body 10 having the spout tubes 13 and 14 is fitted and inserted into the opening 1a of the container body 1, the knob 43 is gripped, and the ring body 42 is rotated in a fixed direction (for example, clockwise direction). By fitting the engaging portion 41 to the engaged portion 40 of the container body 1 by helicoid, the plug body 10 can be firmly locked. When the stopper 10 is locked, the upper packing 20 and the lower packing 21 are strongly pressed against the edge of the opening 1a of the container body 1 as the stopper 10 is tightened and fixed, so that the sealing effect is ensured. The plug 10 does not come off from the opening 1a. By gripping the knob 43 and rotating the ring body 42 in the other direction (for example, counterclockwise direction), the engagement between the engaging portion 41 and the engaged portion 40 is released, and the locking of the plug body 10 is released. To be done.

An air passage 17 is formed in the plug body 10. When the pressing plate 46 of the compressed air source 6 is pressed with the lid body 5 closed, the compressed air from the compressed air source 6 is transferred to the plug body 10. It is designed to be blown into the container body 1 through the air passage 17. Due to the compressed air that has been blown in, the content liquid is discharged from the suction pipe 12 through the discharge pipes 13 and 14 and the discharge pipe 15.

The air passage 17 formed in the plug 10 is always placed on the upper surface of the rising rib 18, and passes through the air passages 19, 47, 48 on the upstream side thereof to the bottom plate 6 b of the compressed air source 6. A valve body 50 is provided so as to communicate with the formed relief hole 49. That is, since the valve body 50 has a weight that does not close even when the inside of the inner container 3 is in the pressurized air state, when the inside of the inner container 3 becomes pressurized air, the pressurized air is transferred to the air passage 1 described above. It is made to escape from 7, 19, 47, 48 to the outside of the system through a relief hole 49 to prevent accidental jumping up of the plug 10 due to pressurized air. Further, when the container body 1 falls, the valve body 50 closes the air passages 19, 47 and 48, so that the content liquid in the container body 1 does not enter.

A valve mechanism 52 for closing the liquid passage 51 is provided in the liquid passage 51 formed in the central portion of the stopper 10. The valve mechanism 52 includes a valve body 53 and a spring 54 that normally biases the valve body 53 in the upward valve closing direction. In the valve mechanism 52, the valve body 53 is kept closed by the spring 54 when the compressed air source 6 is not operated. However, when the pressing plate 46 is pressed, the valve body 53 is pressed down by the pressing rod 55 which is pressed down in conjunction with it. Is pushed down to open the valve. Therefore, since the liquid passage 51 is normally closed by the valve mechanism 50, even if the container body 1 falls down, the content liquid in the container body 1 does not flow out through the pouring passage 16 to the outside. .

In FIG. 2, 6 a is an upper plate of the compressed air source 6, 56 is packing, 57 is packing provided so as to cover the valve body 53, 58 is packing, 59 is a cover for covering the discharge pipe 15, 60, 62 is a spring and 61 is a stopper.

The structures of the upper packing 20 and the lower packing 21 are not limited to those shown in the drawings of the above-described embodiments, but can be designed appropriately. For example, the configuration shown in FIGS. 6 to 10 can be adopted.

In FIG. 6, a lower packing 21 having a gutter-shaped cross section is fitted into a storage recess 30 formed near the lower end of the body 10 a of the plug 10, and the lower packing 21 is inserted into the plug of the inner container 3. The other structure is the same as that of FIG. 1 so that it abuts against the wall 3a. 10b is a bottom plate portion of the stopper.

In FIG. 7, a lower packing 21 having the same shape as that of FIG. 6 is fitted into a notch recess 31 formed in the lower end of the body portion 10 a of the plug body 10, and the lower packing 21 is provided below the lower packing 21. Is provided with a bottom wapper 34 having a male screw 33 that is screwed into a female screw 32 formed on the outer peripheral wall of the bottom plate 10b of the plug body 10, and the curvature radius r of the lower packing 21 is adjusted by moving the bottom wapper 34 up and down. The contact strength of the lower packing 21 with respect to the inner container 3 is increased to ensure a reliable seal. Other configurations are the same as those in FIG.

In FIGS. 8 and 9, the body portion 10a and the bottom plate portion 10b of the stopper 10 are ultrasonically welded 35 and abutted on the lower portion of the stopper insertion wall 3a of the inner container 3 of the container body 1. The lower packing 21 is fitted into the storage recess 36 of the bottom plate portion 10b of the plug body 10, while the upper packing 20 extends the inner tip of the packing 58 shown in FIGS. The portion 58a is configured to be in pressure contact with the body portion 10a of the plug 10, and the space surrounded by the upper packing 20 (58) and the lower packing 21 serves as a heat insulating space 22. In this case, a positioning projection 37 is projected on the upper part of the body portion 10a of the stopper 10, and a positioning groove 38 is formed at an appropriate position on the edge of the opening 1a of the lower opening member 4 forming the container body 1. By engaging the positioning protrusion 37 with the positioning groove 38, the stopper 10 is prevented from rotating with respect to the container body 1.

In FIG. 10, an annular protrusion 70 is provided on the side wall of the bottom plate portion 10b of the plug body 10, and an annular groove 71 is formed in the lower portion of the body portion 10a of the plug body 10 facing the annular protrusion 70. Then, the annular projection 70 is forcibly fitted in the annular groove 71, and the lower packing 21 is fitted between the lower end surface of the body portion 10a of the stopper 10 and the notch step portion 72 at the lower side wall of the bottom plate portion 10b. It was done.

[0028]

[Effect of device]

 According to this invention, (1) an annular upper packing 20 and a lower packing 21 are provided on the upper part and the lower part outside the plug 10, respectively, and the upper packing 20 is seated at the edge of the opening 1a of the container body 1. The lower packing 21 is brought into contact with the lower portion of the plug insertion wall 3a of the inner container 3 into which the plug 10 is inserted, and is surrounded by the upper packing 20, the lower packing 21, the plug 10 and the plug insertion wall 3a of the inner container 3. Since the opened portion serves as the heat insulating space 22, the double seal of the upper packing 20 and the lower packing 21 ensures reliable sealing even if the container body 1 falls. Moreover, since the heat insulating space 22 surrounded by the upper packing 20 and the lower packing 21 and the like can prevent the convection between the heat insulating space 22 and the inside of the container body 1, the heat retaining / cooling effect is improved. According to the example of comparison between the conventional example of FIG. 11 and the product of the present invention, it is possible to achieve heat retention higher by 5 ° C. in the latter case than in the former case at a temperature of 95 ° C. for 24 hours. .

(2) As described in claim 2, an inwardly-directed bent protrusion 1b is formed in the lower portion of the plug insertion wall 3a of the inner container 3, and the upper step 9 of the bent protrusion 1b is formed. With the configuration in which the lower packing 21 is seated on the seat, the seat of the lower packing 21 can be formed by the container body 1 itself, so that there is no need to provide a separate seat as in the conventional case, and the structure is simplified.

(3) As described in claim 3, the stopper 10 is engaged with and disengaged from the engaged portion 40 provided at the edge of the opening 1 a of the container body 1 by rotating the stopper 10. An engaging portion 41 that freely engages is provided, and when the engaging portion 41 and the engaged portion 40 are engaged, the upper packing 20 and the lower packing 21 provided on the plug body 10 are pressed and sealed by the plug body 10. With this structure, the upper packing 20 and the lower packing 21 can be more reliably sealed.

[Brief description of drawings]

FIG. 1 is a longitudinal sectional view of an essential part of an embodiment of the present invention.

FIG. 2 is a vertical cross-sectional view showing the overall structure of the upper part of the container body in which the plug is inserted.

FIG. 3 is a plan view showing a state in which a lid body of FIG. 2 is removed.

FIG. 4 is an exploded perspective view of FIG.

5 is a partial vertical cross-sectional view of FIG.

FIG. 6 is a cross-sectional view showing a first modified example of both upper and lower packings.

FIG. 7 is a cross-sectional view showing a second modification of both upper and lower packings.

FIG. 8 is a cross-sectional view showing a third modified example of the upper and lower packings.

FIG. 9 is an exploded perspective view of FIG.

FIG. 10 is a sectional view showing a fourth modified example of the upper and lower packings.

FIG. 11 is a vertical sectional view of a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Container body 1a Opening 1b Bending protrusion 3 Inner container 3a Plug insertion wall 4 Lower mouth member 5 Lid body 6 Compressed air source 10 Plug body 20 Upper packing 21 Lower packing 22 Insulation space 40 Engagement part 41 Engagement part

Claims (3)

[Scope of utility model registration request] 1. A plug structure of a liquid container having a plug body 10 which is removably inserted into an opening 1a of a container body 1 which forms a heat insulating container with an outer container 2 and an inner container 3. A ring-shaped upper packing 20 and a lower packing 21 are provided on each of the upper and lower parts of the container, the upper packing 20 is seated on the edge of the opening 1a of the container body 1, and the lower packing 21 is the inner container into which the plug 10 is inserted. 3 is brought into contact with a lower portion of the plug insertion wall 3a of the upper plug 2
A plug structure for a liquid container, wherein a portion surrounded by 0, the lower packing 21, the plug 10, and the plug insertion wall 3a of the inner container 3 is used as a heat insulating space 22. 2. A structure in which an inward bending protrusion 1b is formed in a lower portion of the plug insertion wall 3a of the inner container 3, and a lower packing 21 is seated on an upper step 9 of the bending protrusion 1b. A stopper structure for a liquid container according to claim 1. 3. The stopper body 10 is provided with an engaged portion 4 provided at the edge of the opening 1a of the container body 1 by rotating the stopper body 10.
0 is provided with an engaging portion 41 that engages and disengages with each other. When the engaging portion 41 and the engaged portion 40 are engaged, the upper packing 20 and the lower packing 21 provided on the plug body 10 are the same. 3. The structure according to claim 1 or 2, which is pressed and sealed by
The stopper structure of the liquid container described.