JP3389890B2 - Liquid container - 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 having an improved mouth structure of a container body having an insulating space formed between an inner container and an outer container.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 5, the mouth structure of a container body in a liquid container of this type has a bottomed cylindrical inner container 02 and a bottomed cylindrical outer container 03 as a container body 01. In order to prevent the heat retention effect from decreasing, the upper part of
A gap S that is a heat insulating space is formed between the three, and a screw 05 for fitting the lid body 04 is provided at the lower portion of the mouth portion of the outer container 03.
A screw 08 for fitting the plug 07 is formed on the upper part of the small diameter after passing through, and the lid fitting screw 05 and the plug fitting screw 08 are engraved at a position where two steps are provided. ing. Further, the inner peripheral surface of the inner container 02 facing the packing 09 provided at the lower portion of the stopper 07 has an annular projection 010 projecting inward to achieve a sealing effect.

[0003]

However, according to the above-mentioned conventional liquid container, as described above, the lid fitting screw 05 is used.
And the plug fitting screw 08, two screw parts must be formed with two steps, and both the inner and outer containers 0
Since there is a gap S between the upper part of the container 03 and the upper part of the container 03, the radial dimension between the lower part of the mouth part of the outer container 03 and the annular projection 010 of the inner container 02 is However, due to the restriction in the radial direction, the size had to be large. Therefore, it is difficult to reduce the diameter of the outer container 03 opening of the container body, and it is not possible to increase the diameter (wider opening) of the plug 07 fitting portion of the inner container 02, and the lid is downsized. I couldn't do it either.

Further, according to the above-mentioned conventional liquid container, at the mouth portion of the outer container 03, two screw portions, that is, the plug body fitting screw 08 and the lid body fitting screw 05, must be formed in two steps, upper and lower. I had to do it.

The present invention solves the problems of the conventional liquid container described above, and the mouth of the outer container of the container body is made small in diameter,
An object of the present invention is to provide a liquid container in which the size of the container body can be reduced, the size of the lid can be reduced, and the number of screw processing steps at the mouth of the outer container can be reduced.

[0006]

To achieve the above object, the invention of claim 1 provides a container main body having a heat insulating space formed between an inner container and an outer container, and a plug hole of the inner container of the container main body. A plug body for closing the plug body and a lid body for covering the plug body and the mouth portion of the container body are provided, and a plug body fitting screw for fitting the plug body is formed at an upper end portion of the inner container. In addition, in a liquid container in which a lid fitting screw for fitting a lid is formed on the upper end of the outer container, the plug fitting screw and the lid fitting screw are the upper end of the inner container. The upper end portion of the outer container is polymerized, and the threaded portion is formed on one of the upper end portion of the inner container and the upper end portion of the outer container forming the overlapped portion, and the threaded portion is formed on the other side facing the threaded portion of the screw. So that the valley of the screw is formed,
The feature is that they are screwed at the same time.

Here, the stopper body fitting screw and the lid body fitting screw overlap the upper end portion of the inner container and the upper end portion of the outer container, and screw both at the same time so that both screw portions are doubled. Are integrally formed. In this case, the upper end of the inner container and the upper end of the outer container are preferably polymerized from the tip to the end of the screw, but may be polymerized from the tip to a position lower than the end of the screw. However, a screw for fitting a plug body is formed on the inside of a screw processing member that is bent into an inner and outer double tubular shape, and a screw for fitting a lid body is formed on the outside. It can also be joined to the upper end (see claim 2).

According to a third aspect of the present invention, there is provided a container body in which a heat insulating space is formed between the inner container and the outer container, a plug body for closing a plug hole of the inner container of the container body, and the plug body and the container body. A lid body that covers the mouth portion, and a cap body fitting screw for fitting the plug body is formed on the upper end portion of the inner container, and the lid body is fitted on the upper end portion of the outer container. In a liquid container in which a lid fitting screw for mating is formed, a plug body can be screwed to the plug fitting screw, and a lid body can be screwed to the lid fitting screw,
The lid fitting screw is continuously extended to a shoulder position, and a shoulder member is screwed to the extended screw portion.

In this case, it is preferable that the cap body fitting screw and the lid body fitting screw are screwed by overlapping the upper end of the inner container and the upper end of the outer container. Further, it is preferable to provide a string attaching portion for attaching a hanging string to a part of the shoulder member (see claim 5).

In the present invention, the lid preferably serves also as a cup. The plug fitting screw and the lid fitting screw of the present invention may be single-thread screws, but multi-thread screws are preferable. Further, so-called helicoid protrusions or other protrusions may be used.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION First Embodiment A first embodiment of the present invention will be described below with reference to FIG. This FIG. 1 shows a vertical sectional view.

This liquid container is composed of an inner container 1A and an outer container 1B.
A container body 1 having a heat-insulating space 2 formed between the container body 1, a plug body 20 for closing the plug hole 3 of the inner container 1A of the container body 1, the plug body 20 and the mouth of the container body 1 are covered. And a lid 30.

The container body 1 is a double container consisting of a cylindrical inner container 1A with a bottom formed of metal, and an outer container 1B in which a bottom portion 4 also formed of metal is joined to a bottom body 5 by welding or the like. Is formed, and the space formed between the inner and outer containers 1A, 1B is evacuated to form a vacuum heat insulating space 2. The plug body 20 is inserted into the plug hole 3 of the container body 1. A lid 30 also serving as a cup is screwed onto the upper end of the outer container 1B.

The upper end portion of the inner container 1A and the upper end portion of the outer container 1B are overlapped with each other, and at the overlapped portion, a screw 6 for fitting (screw-engaging) the plug body 20 is attached to the inner container 1A side. Container 1
A screw 7 for fitting (screw-engaging) the lid body 30 is formed on the B side. Therefore, the stopper body screwing screw 6 is attached to the stopper body 20.
The screw 21 formed on the outer wall of the lid is screwed to close the screw, and the screw 7 for fitting the lid body is provided with the screw 3 formed on the inner peripheral wall of the lid body 30.
1 is screwed to cover.

The plug fitting screw 6 and the lid fitting screw 7
In this embodiment, the forming method is formed by superposing the upper end portion of the inner container 1A and the upper end portion of the outer container 1B and then pressing them with a press or the like to simultaneously screw them. That is, the plug-fitting screw 6 and the lid-fitting screw 7 overlap the upper end portion of the inner container 1A and the upper end portion of the outer container 1B, and form the overlapping portion with the upper end portion of the inner container 1A. Both screws 6 and 7 are screwed at the same time so that a screw thread portion is formed on one of the upper end portion of the outer container 1B and a screw thread portion is formed on the other opposite to the screw thread portion. It has been processed.

For example, the inner and outer containers 1A and 1B are temporarily set by inserting the inner container 1A from below the outer container 1B (where the bottom portion 4 and the bottom plate 5 are not attached), and then the inner and outer containers 1A and 1B are The upper ends are overlapped with each other, and the screws 6 and 7 are simultaneously formed at a lower position near the overlapped part by a screw machine or the like, and the rim portions of both the inner and outer containers 1A and 1B are welded 8
And join. Alternatively, as shown in FIG. 2, after the inner and outer containers 1A and 1B are temporarily set, the upper end portions of the both containers 1A and 1B are polymerized, and a screwing process is simultaneously applied to the polymerized portion, so that the inner container 1A has an upper end portion. A thread crest a is formed on either one of the top and the upper end of the outer container 1B, and a thread trough b is formed on the other side facing the thread crest a. Next, the upper and lower portions of the overlapping portions of both the inner and outer containers 1A and 1B are welded 8 to integrally form the upper ends of both containers 1A and 1B in a double structure.

The plug fitting screw 6 and the lid fitting screw 7 are
As described above, if the upper ends of the inner and outer containers 1A and 1B are overlapped with each other and screwed, a smaller liquid container can be provided as compared with the conventional example (see FIG. 5). Further, according to the present embodiment, the screw for screwing the lid body of the outer container 1B (05 in FIG. 5).
Since it is unnecessary, the number of manufacturing steps is reduced and the production cost is reduced. Further, the size from the inner diameter of the inner and outer containers to the shoulder of the outer container can be reduced, so that the lid can be downsized.

In FIG. 1, 9 is a sealing material for sealing the exhaust port 10, and 11 is a getter material for burning at the time of vacuum discharge in the gap between the inner and outer containers 1A and 1B to improve the degree of vacuum. is there. Reference numeral 12 is a bottom plate fixed to the lower portion of the outer container 1B and covers the bottom body 5. Further, in FIG. 1, the lid 20 of the stopper 20 is removed, the pressing plate 22 is pushed down to open the valve, and then the container is tilted, whereby the internal solution is poured out from the pouring outlet 24 through the liquid passage 23. It is like this. 25
Is a valve element that is seated on the valve seat portion 26, which is an annular protrusion of the inner container 1A, and is in a valve closed state, and 27 and 28 are packings.

As shown in FIG. 1, it is preferable that the lid 30 also serves as a cup, but needless to say, it may not be a cup.

[0020]

Embodiment 2 FIG. 3 shows a second example of the embodiment of the present invention, and the other detailed construction is omitted because it is constructed as shown in FIG. As described above, as shown in FIG. 1, as a method for forming the plug body fitting screw 6 and the lid body fitting screw 7, the upper end portion of the inner container 1A and the upper end portion of the outer container 1B are polymerized and screwed at the same time. However, the present invention is not limited to this, and as shown in FIG. 3, for example, a threaded member 13 that is a separate member from the body portions 1A1 and 1B1 of the inner and outer containers 1A and 1B is used. 1A
1, 1B1 is joined to the upper end portion. In this case, the threaded member 13 is the inner and outer containers 1A, 1
It constitutes the upper end of B.

That is, the threaded member 13 shown in FIG. 3 is obtained by processing the plug body fitting screw 6 and the lid body fitting screw 7 on a single plate, and bending them at the central portion 13a to form the inner and outer cylinders. Position the screw 6 on the inside and the latter screw 7 on the outside,
3b and 13b are the body parts 1A1 of the inner and outer containers 1A and 1B,
It is formed by welding 15 to the upper end of 1B1. In this case, since the lower end portions 13b and 13b of the threaded member 13 are externally fitted to the upper end portions of the body portions 1A1 and 1B1, a gap 16 is formed between the screws 6 and 7. However, it is also possible to adopt a configuration in which this gap 16 is eliminated.

As shown in FIG. 3, when the threaded member 13 is formed of a separate member, there are advantages that the threading is easy, and when a defect occurs in the threaded portion, it can be easily replaced with a good product.

[0023]

Third Embodiment of the Invention A third embodiment of the present invention will be described below with reference to FIG. FIG. 4 shows a vertical sectional view of this embodiment.

The liquid container of this embodiment has a container body 1 in which a heat insulating space 2 is formed between an inner container 1A and an outer container 1B, and a stopper of the inner container 1A of the container body 1 as in the first embodiment. A plug body 20 for closing the hole 3 and a lid body 30 for covering the plug body 20 and the mouth portion of the container body 1 are provided, and the plug body 20 is fitted to the upper end portion of the inner container 1A. And a lid body fitting screw 7 for fitting the lid body 30 to the upper end of the outer container 1B. The fitting screw 7 is the inner container 1
The upper end of A and a part of the upper end of the outer container 1B are overlapped and screwed, and the plug fitting screw 6 has a plug 20.
The lid 30 can be screwed onto the lid fitting screw 7. In the above configuration, the lid fitting screw 7 of the present embodiment is continuously extended to the shoulder position, and the extended screw portion 7
The shoulder member 40 is screwed onto A.

Briefly, in this embodiment, the inner container 1A
In addition to forming a plug body fitting screw 6 on the upper end of the container, a screw is continuously formed from the upper end of the outer container 1B to the shoulder 1C position, and the upper end of the screw is screwed into the lid 30. This is characterized in that the lid fitting screw 7 for doing this is used, and the lower part is the extended screw portion 7A for screwing the shoulder member 40 into engagement. A strap attachment portion 41 is formed on the shoulder member 40, and a hanging strap 42 is attached to the strap attachment portion 41 to make it convenient to carry the body.

When the shoulder member 40 is unnecessary, the shoulder member 40 can be used after being removed from the outer container 1B of the container body 1.

Also in the third embodiment, the plug fitting screw 6 and the lid fitting screw 7 are screwed by overlapping the upper end of the inner container 1A and the upper end of the outer container 1B. ,
As shown in FIG. 3, a configuration in which a gap 16 is formed between the screws 6 and 7 can be adopted.

The plug 20 in this case is composed of a pressing plate 22.
1 is a seesaw type and has a specific internal structure different from that of the plug body 20 of FIG. 1, but since the principle is the same, in FIG.
Is attached. The lid 30 of FIG. 4 also serves as a cup.

1, 2, and 4, the plug fitting screw 6 and the lid fitting screw 7 are the inner container 1A and the outer container 1 respectively.
It is preferable that the upper end portion of B is formed at a position separated from the top surface of the upper end portion by at least 2 mm or more. Both inner and outer containers 1
This is because, when welding the upper ends of A and 1B, when a welding failure occurs, the welding failure point may be cut.

[0030]

According to the liquid container of the first aspect, the stopper fitting screw and the lid fitting screw overlap the upper end of the inner container and the upper end of the outer container to form the overlapping portion. At the same time, a screw thread is formed so that a thread crest is formed on one of the upper end of the inner container and the upper end of the outer container and a thread trough is formed on the other opposite the thread crest. Since both screws can be screwed at the same time, the screwing efficiency is good, and since both screw portions are overlapped, the strength is increased. Also,
The threaded portions of both the inner and outer containers of the conventional example were provided through two steps, but the threaded portion of claim 1 of the present invention is one.
Since it is provided only through the step of the portion, the dimensional difference between the minimum inner diameter of the inner container and the outer diameter of the shoulder portion of the outer container can be reduced. Therefore, even if the inner diameter of the mouth is the same as the conventional one, the diameter of the outer container can be made small, and a small liquid container can be provided, and
Conversely speaking, the mouth of the container body can be widened. Also, the lid can be downsized. Furthermore, the number of screw processing steps at the mouth of the outer container is reduced, and production efficiency is improved.

According to the liquid container of the second aspect, since the threaded member is a member separate from both the inner and outer containers, the threading is easy, and when the threaded portion is defective, it is replaced with a good product. There is an advantage that it is easy to do.

According to the third aspect of the liquid container, the plug body, the lid body and the shoulder member are screwed by the screws of the inner and outer containers, which is extremely convenient. At the same time, it can be used as a liquid container in which the shoulder member is screwed to the lid fitting screw and the hanging string is attached, and can also be used as a liquid container in which the shoulder member is removed from the lid fitting screw. Further, since the lid body and the shoulder member can be screwed together with one lid body fitting screw, the cost is further reduced. Furthermore, since the sealing performance between the plug fitting screw and the lid fitting screw (including the extended screw portion) is high,
You can wash it completely without water leakage.

According to the liquid container of claim 4, in addition to the effect of claim 3, both screws can be threaded at the same time, so the threading efficiency is good, and since both threaded portions are polymerized, the strength is high. Become.

According to the liquid container of the fifth aspect, it is convenient because the suspended string attached to the shoulder member can be hung on the shoulder or the like and carried.

[Brief description of drawings]

FIG. 1 is a vertical sectional view of a first embodiment of the present invention.

FIG. 2 is an enlarged vertical cross-sectional view of a threaded portion of both the inner and outer containers according to the first embodiment of the present invention.

FIG. 3 is a vertical cross-sectional view showing a second embodiment of the present invention in which a threaded member is joined to the upper ends of both the inner and outer containers.

FIG. 4 is a vertical cross-sectional view of Embodiment 3 of the present invention.

FIG. 5 is a vertical sectional view of a conventional example.

[Explanation of symbols]

1 container body 1A inner container 1B outer container 2 insulation space 3 plug holes 6 Screws for fitting plugs 7 Lid fitting screws 7A extended screw part 13 Threaded parts 20 plug 21 screws 30 lid 31 screws 40 shoulder member 42 hanging string

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁷ identification code FI B65D 23/00 B65D 23/00 C 47/20 47/20 Y (58) Fields investigated (Int.Cl. ⁷ , DB name) B65D 81/38 A47J 41/02 101 A47J 41/02 102 A47J 41/02 104 B65D 8/06 B65D 23/00 B65D 47/20

Claims (5)

(57) [Claims] 1. A container main body having a heat insulating space formed between an inner container and an outer container, a stopper for closing a stopper hole of the inner container of the container main body, and the stopper and the mouth of the container main body. A lid body for covering, wherein a cap body fitting screw for fitting a plug body is formed on an upper end portion of the inner container, and a lid body for fitting a lid body on an upper end portion of the outer container. In a liquid container having a body-fitting screw formed therein, the plug-fitting screw and the lid-fitting screw overlap the upper end of the inner container and the upper end of the outer container to form the overlapped portion. Screws are formed at the same time so that either one of the upper end of the inner container and the upper end of the outer container has a thread crest, and the other opposite the thread crest has a thread trough. A liquid container characterized by being provided. 2. A container body in which a heat insulating space is formed between an inner container and an outer container, a plug body for closing a plug hole of the inner container of the container body, and the plug body and a mouth portion of the container body. A lid body for covering, wherein a cap body fitting screw for fitting a plug body is formed on an upper end portion of the inner container, and a lid body for fitting a lid body on an upper end portion of the outer container. A liquid container formed with body-fitting screws, wherein inner and outer double cylinders are bent at the upper ends of the body parts of the inner container and the outer container, and a plug-fitting screw is provided on the inside for fitting the lid on the outside. A liquid container, wherein a lower end portion of a threaded member on which a screw is formed is joined. 3. A container body in which a heat insulating space is formed between an inner container and an outer container, a plug body for closing a plug hole of the inner container of the container body, and the plug body and an opening of the container body. A lid body for covering, wherein a cap body fitting screw for fitting a plug body is formed on an upper end portion of the inner container, and a lid body for fitting a lid body on an upper end portion of the outer container. A liquid container in which a body fitting screw is formed, and a plug body can be screwed to the plug body fitting screw, and a lid body can be screwed to the lid body fitting screw, wherein the lid body fitting screw reaches a shoulder position. A liquid container characterized in that it is continuously extended and a shoulder member is screwed into the extended screw portion. 4. The cap fitting screw and the lid fitting screw overlap the upper end portion of the inner container and the upper end portion of the outer container, and form the overlapped portion with the upper end portion of the inner container and the outer container. 4. The liquid container according to claim 3, wherein a screw thread is formed at the same time so that a thread crest is formed on either one of the upper end and the thread crest on the other side facing the thread crest. . 5. The liquid container according to claim 3, wherein a strap attaching portion for attaching a hanging strap is provided on a part of the shoulder member.