JPH0228842Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) The present invention relates to a double vacuum container made of metal, and more specifically to a double vacuum container made of metal in which a container body with a double vacuum structure made of metal is housed in an outer case. .

(Prior Art) In this type of metal vacuum double container, the outer case is composed of two members divided into upper and lower parts to accommodate the container main body, which is a metal vacuum double container.
The container body is housed and fixed between the two members.

For example, in the case disclosed in Japanese Utility Model Application Publication No. 59-40054, the exterior case is composed of two members: a shoulder body and a bottomed body, and the lower end engagement claw of the shoulder body tightly fits into the recessed part of the body. It is integrated by this. However, the main body of the container inside the outer case is simply fixed in a suspended state by screwing the mouth part around the shoulder body.

(Problem to be solved by the invention) With the above-mentioned conventional method of fixing the container body, the container body that is housed and fixed becomes a heavy body together with the liquid content, and is subject to large movements when carrying or handling the container. Any movement such as sudden movement or slight vibration will cause strong inertia, which will affect the threaded portion. For this reason, the screw connection tends to loosen, causing looseness. This is difficult to prevent by simply supporting the bottom of the container body with the inner surface of the body to prevent it from swaying, as in the conventional example.

Therefore, it is conceivable to securely house and hold the container body by sandwiching it between two members of the outer case. In this case, if the two members are connected by close fitting between the claw and the recess as in the conventional example, the absorption of dimensional errors cannot be expected due to this connection structure, and the connection and the clamping of the container body cannot be expected. It is difficult to achieve this reasonably and reliably.

An alternative method is to connect the two members of the outer case by threading to absorb dimensional errors in the container body and the outer case, and to connect the two members with each other to ensure the fixation of the container body. It is conceivable to achieve this by giving priority to the clamping of the container body.
Normally, a tightening margin for the screw, or a gap, is left between the abutting end surfaces of the two members screwed together on the outer periphery.

However, this product has an unsightly appearance with the gap exposed around the outside, and is also unsanitary because it is easy for dirt to adhere there. In addition, there is a problem in that the parts that are screwed together are not completely tightened by screwing, and are likely to come loose during handling.

Therefore, the present invention is capable of absorbing dimensional errors in the outer case and the container body, making it possible to securely sandwich the container body between the outer case consisting of two members, and creating a good appearance without creating a gap at the joint between the two members. The purpose is to provide a metal vacuum double container.

(Means for Solving the Problems) In order to achieve the above object, the present invention consists of an exterior case that accommodates and fixes a metal vacuum double structure container body inside, and a case body and a case bottom body that are divided into two parts at the body. and a threaded cylindrical body fitted onto the outside of the container body so as to engage from below with a protrusion provided on the outer surface of the container body, and having a straight male threaded surface, and the lower end of the case body has a threaded cylindrical body. The case bottom body is screwed onto the male threaded surface of the cylindrical body to sandwich and connect the container body between its upper end and the threaded cylindrical body, and the upper end of the case bottom body is screwed onto the male threaded surface of the threaded cylindrical body. An elastic body is butt-connected to the lower end of the case body, and is interposed between the bottom of the container body and the bottom wall of the case bottom body, and this elastic body is connected to a vacuum sealing recess formed at the bottom of the container body and a reinforcing protrusion formed on the bottom wall of the case bottom body.

(Function) The lower end of the case body, which forms the upper half of the outer case, is attached to the straight male threaded surface of the threaded cylinder that is fitted onto the body of the container body and engages the protrusion of the body of the container body from below. Because they are screwed together, there is no limit to the amount of screw engagement between the case body and the threaded cylinder, and the container body can be firmly secured between the case body and the screw cylinder without being affected by dimensional errors in the container body or the case body. The screws can be screwed together indefinitely until they are clamped, achieving a strong bond.

In addition, the upper end of the case bottom body is screwed into the male threaded surface of the threaded cylinder body and is butted against the bottom end of the case body, so by screwing the case base body tightly so that the butt is tight, the case bottom body itself can be tightened. Regardless of dimensional errors, the case bottom body is firmly connected to the case body without creating a gap at the butt part between them, and the container body is firmly fixed inside the outer case consisting of the case body and the case bottom body. It can be kept accommodated.

Furthermore, an elastic body is interposed between the bottom of the container body and the bottom wall of the case bottom, which fits into the vacuum sealing recess and reinforcing protrusion formed on each. Through this elastic body, it is possible to absorb dimensional errors between the bottom of the container body and the bottom of the case, maintain their positions, and protect them from external forces. This does not prevent the above-described connection between the main body and the bottom of the case.

(Example) The present invention will be specifically described below based on an example shown in the drawings.

In the embodiment shown in FIG. 1, reference numeral 1 denotes a metal vacuum double structure container body in which a metal inner container 2 and a metal outer container 3 are integrated with a vacuum space 4 between them. A welded portion 3a is provided at the intermediate portion of the outer container 3 to form an outer flange, and an annular reinforcing rib 3b is appropriately formed to protrude. A mouth seal (elastic body) 5 is fitted into the opening 1a at the upper end of the container body 1. Reference numeral 6 denotes an exterior case made of synthetic resin for housing and fixing the container body 1, and is divided into two parts at the middle position of the body, and is composed of an upper case body 7 and a lower case bottom body 8. The case body 7 and the case bottom body 8 are each screwed into a threaded cylinder 9 fitted onto the outside of the container body 1 so as to engage with the welded portion 3a from below, and are mutually connected to each other via the threaded cylinder 9. combined. A short inner cylinder 10 forming a pouring opening is vertically disposed at the upper end of the case body 7, and the mouth gasket 5 is sealingly engaged with the lower end of the inner cylinder 10. Further, a plug body 11 is screwed into a screw formed on the inner periphery of the inner cylinder 10. In the upper part of the case body 7, there are two shoulder parts 1 between the spout edge 7a at the upper end and the body part 7b.
2a and 12b are formed. Small diameter shoulder 12
An outer lid 13 having the same diameter as the body 7b of the case body 7 is attached to a screw formed on the outer periphery of the peripheral wall between the large diameter shoulder 12b and the large diameter shoulder 12b.
are screwed together, and the lower end thereof engages with the shoulder portion 12b. A pair of protrusions 14 are protruded from both sides of the case body 7 near the upper end of the body 7b, and both ends of a suspension band 15 are attached to the protrusions 14. 16 is a cup placed inside the outer lid 13. A circular recess 17 is formed in the bottom surface of the medium bottle 1, into which the upper end of an annular elastic body 18 of an appropriate height is fitted. This elastic body 18 is supported on the bottom wall 8a of the case bottom body 8, and is engaged with a protrusion 19 formed on the bottom wall to prevent displacement in the radial direction.

In the above configuration, when assembling, the mouth gasket 5 is fitted into the upper end opening of the container body 1, and the threaded cylinder 9 is externally fitted from the bottom side and engaged with the welded part 3a, and the case body 7 is inserted from above. The container body 1 and the case body 7 are assembled by screwing and tightening the lower end part to the threaded cylinder body 9, and then the case bottom part 8 is assembled.
After arranging the elastic body 18 on the bottom wall 8a of the container body 1, the case bottom 8 is placed over the bottom of the container body 1, and its upper end is screwed into the threaded cylinder 9, so that the lower end of the case body 7 and the case bottom 8 Tighten until the end faces abutting against the upper end of the two are brought into contact and joined, and there is no gap between the two. At this time, since the threaded cylinder 9 is engaged with the welded portion 3a, the threaded cylinder 9 is prevented from rotating together. In this way, by screwing together and tightening the case bottom body 8, the elastic body 18 is compressed and deformed, and its elastic restoring force pushes up the container body 1. Thus, the container body 1 is moved between the opening gasket 5 and the elastic body 18. The case body 7 and the case bottom body 8 are clamped and fixed via the case body 7 and the case bottom body 8. At the same time, dimensional errors in the container body 1 are also absorbed by the compressive deformation of the elastic body 18.

Incidentally, instead of the threaded cylinder body 9 being engaged with the welded portion 3a, the reinforcing rib 3b is attached as shown by the imaginary line.
may be engaged with. Further, the case body 7 is not limited to being an integrally molded product, but may be made by integrally joining divided bodies.

Moreover, by housing the container body 1 in the outer case 6 in this way, even if there are dents or dirt on the container body 1, the appearance will not be damaged.
The container body 1 can be manufactured at low cost.

In addition to the embodiments exemplified above, the present invention can be implemented with various modifications by modifying and combining the split structure of the outer case, the screwing structure between the case body and the case bottom, and the structure of the elastic body. be.

(Effects of the invention) The present invention has the above-mentioned structure and operation, and includes a threaded cylinder body that connects the case body of the outer case and the case bottom body by butting their straight male threaded surfaces, and the bottom of the container body and the case bottom body. The elastic body fitted between the bottom wall and the bottom wall of the case allows the case body and case bottom to be screwed together until the container body is securely clamped without being affected by dimensional errors between the container body, the case body, and the case bottom body. Thus, it is possible to provide a metal double container in which the outer case consisting of a case body and a case bottom body can be firmly connected to the container body.

[Brief explanation of the drawing]

FIG. 1 is a half-sectional front view of an embodiment of the present invention. DESCRIPTION OF SYMBOLS 1... Container body, 2... Inner container, 3... Outer container, 4... Vacuum space, 5... Mouth packing (elastic body), 6... Outer case, 7... Case body, 8
... Case bottom body, 9 ... Threaded cylinder body, 18 ... Elastic body, 8a ... Bottom wall, 17 ... Recessed part, 19 ... Protrusion part.

Claims (1)

[Scope of utility model registration request] The exterior case that accommodates and fixes the metal vacuum double-layer container body inside is composed of a case body that is divided into two parts at the body and a case bottom body, and engages from below with a protrusion provided on the outer surface of the container body. The case body is provided with a threaded cylinder body that is externally fitted onto the container body and has a straight male threaded surface, and the case body screws its lower end onto the male threaded surface of the threaded cylinder body so that there is a gap between its upper end and the threaded cylinder body. The container body is clamped and connected to it, and the upper end of the case bottom body is screwed to the male threaded surface of the threaded cylinder body, and the bottom end of the case body is butt-connected to the bottom of the container body and the bottom wall of the case bottom body. An elastic body is interposed between the case body and the case body, and this elastic body is fitted into a vacuum sealing recess formed at the bottom of the container body and a reinforcing protrusion formed at the bottom wall of the case bottom body. A metal vacuum double container characterized by: