JPH0114278Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a vacuum metal thermos flask in which a shoulder case covering the shoulder is attached to the shoulder of a metal vacuum double container.

In this type of vacuum metal thermos flask, the following two methods have been conventionally used to attach the shoulder case to the shoulder of the vacuum double container by covering it.

The first method is to weld a screw seat to the shoulder of the outer container of the vacuum double container and screw the shoulder case to the screw seat. However, this method has the disadvantage that a large amount of manpower and time is required for screw seat welding work and screw fixing work for the shoulder case, resulting in poor work efficiency and high costs.

The second method is to form a screw or protrusion on the outer periphery of the outer container, screw or force fit the shoulder case, and use adhesive between the outer container and the shoulder case to prevent rotation. This is a method of fixing both.

However, according to this method, processing such as thread cutting of the outer container becomes complicated, and workability deteriorates due to the use of adhesive, resulting in poor work efficiency and high costs. In addition, if you omit processing such as thread cutting on the outer container and form screws by press forming, it is difficult to form the screws accurately, and it is difficult to ensure that they are threaded with the shoulder case screws. If this is not done, there is a problem in that it is difficult to firmly hold the shoulder case on the outer container.

Generally, in order to increase the mounting strength of each member, separate members such as reinforcing members are installed between each member, but this increases the number of parts and increases the cost. .

The present invention aims to rectify the drawbacks of the conventional examples described above, and provides a vacuum metal thermos flask having a double metal vacuum container consisting of a metal inner container and an outer container. formed by joining with
An outer flange is formed at each joint between the body and the shoulder to form a joint double flange, and a discontinuous part is formed in a part of the joint double flange, and on the other hand, the shoulder of the metal vacuum double container is formed. An inward engaging protrusion is formed on the inner periphery of the shoulder case to be fitted to the shoulder case, which engages with the joint double flange by rotating a predetermined angle after passing through the disconnection part, and this joint It is characterized in that the shoulder case is attached to the vacuum double container by engaging the shoulder case with the double flange.

In order to improve the formability of the outer container and to reinforce the outer container itself, it is necessary to join the shoulders and body of a metal vacuum double container. A joint double flange, which also serves as a reinforcing member of the outer container to which the outer flange of the body is joined, is joined in a double state at the joint portion.

The shoulder case can be firmly connected to the container by engaging the inward engaging protrusion on the inner periphery of the shoulder case with this joining double flange.

The present invention will be specifically described below based on embodiments shown in the drawings.

The first embodiment shown in FIGS. 1 and 2 is attached to a stainless steel vacuum double container 1 by covering the shoulder side with a synthetic resin shoulder case 2 and the bottom side with a synthetic resin bottom case 3, respectively. A bottle spout 4 formed at the tip of the shoulder of the vacuum double container 1 is closed by a screw stopper 5, and a cap 6 which also serves as a lid is removably screwed into the shoulder case 2.

The vacuum double container 1 consists of an outer container 7 and an inner container 8, and a vacuum space 9 is formed between the two. The outer container 7 is formed by joining a shoulder portion 10 and a body portion 11,
Outward flanges 10a and 11a are formed at the joint between the shoulder 10 and the body 11, respectively, and are welded at this joint to form a joined double flange. Outward flange 1 forming this joint double flange
0a, 11a have a plurality of notches (insulating parts) 12, 12... having a considerable width, and the notches 1
Engagement grooves 23 facing in the radial direction are formed in the vicinity of one end of the back surface 22 of each of the projections 13, 13, . Further, the body portion 11 is provided with a large number of convex annular corrugations 14, 14, . . . for reinforcing the strength. The inner container 8 has a round body part 15 and a bottle mouth part 1.
6, and both are integrated. The bottle opening 16 has a step 17 that expands outward in the radial direction near its tip, and its tip 18a is joined to the tip 18b of the shoulder 10, and by welding this joint, the outer container 7 and the inner container 8 are integrally connected.

As shown in FIG. 2, the shoulder case 2 has a ring portion 27 with the largest diameter at the base end, a flap opening portion 28 formed to bend radially inward at the distal end, and the ring portion 27 It is configured so that the diameter gradually decreases from there toward the wrapper opening 28.

A pair of locking portions 29a and 2 are provided on the outer surface of the ring portion 27, each having a locking hole 29 for locking a hanging cord.
9a is formed. Further, a portion 32 adjacent to the ring portion 27 is formed to have a slightly smaller diameter than the ring portion 27, but a screw thread 33 for screwing is formed on the outer surface thereof. Furthermore, a screw 35 for screwing the screw plug is formed on the outer surface of a portion 34 near the flap opening 28.

The proximal opening edge 19 of the shoulder case 2 has the same number of engaging protrusions 20, 20, . . . projecting in the radial direction as the notches 12, 12, . These engaging protrusions 20, 20... are formed to have a slightly narrower width than the notches 12, 12..., and when the shoulder case 2 is pushed into the tip of the vacuum double container 1, the notches 12, 12... Outward flanges 10a, 1 forming a joined double flange by passing through
It is configured to reach the back surface 22 of 1a. Furthermore, when the shoulder case 2 is rotated by a predetermined angle from the pushed-in state, the engaging protrusions 20, 20, . . . are configured to engage with the protruding portions 13, 13, . By engaging the shoulder case 2 with the outward flanges 10a, 11a in this manner, it can be attached to the vacuum double container 1. Incidentally, near one end of the engagement surface 21 of the engagement protrusions 20, 20... is formed an engagement protrusion 24 facing in the radial direction that engages with the engagement groove 23 (FIG. 2). . This engagement protrusion 24 and the protrusion 20
By engaging these, the shoulder case 2 is prevented from rotating and positioned.

When attaching the shoulder case 2 to the vacuum double container 1, a cross section 〓
A ring-shaped bottle opening gasket 36 is fitted, and this bottle opening gasket 36 is held under pressure between the lap opening 28 of the shoulder case 2 and the stepped portion 17 of the inner container 8, and the shoulder case 2 and the vacuum A seal with the heavy container 1 is ensured. Also, this bottle mouth seal 3
Since 6 is made of an elastic material such as rubber, when it is compressed and deformed, it exerts an elastic force on the shoulder case 2 in the right direction in FIG. Protrusions 20, 20...
and are engaged with each other in a crimped state. still,
Due to its compressive deformation, the bottle mouth gasket 36
It can also function to absorb dimensional errors in the axial direction between the shoulder case 2 and the vacuum double container 1.

A screw plug 5 is removably screwed into the screw plug screw 35 of the shoulder case 2. The screw stopper 5 of this embodiment is a double structure stopper consisting of an outer stopper 37 and an inner stopper 38, and the outer stopper 37 is provided with a screw 39 that is screwed into the screw 35.

The inner stopper 38 is screwed into the outer stopper 37 so that it can move forward and backward, and by rotating and retracting the inner stopper 38, the inner stopper 38
A liquid injection passage 40 formed between the outer plug 37 and the outer stopper 37 is opened. When supplying liquid into the vacuum double container 1 or treating residual liquid, the outer plug 37 may be unscrewed from the vacuum double container 1 and the entire screw stopper 5 may be removed. 41, 42 are 0 rings, 4
3 is a heat insulating material.

A tip 6 is removably screwed into the tip screw 33 of the shoulder case 2. For this reason, a screw 4 that is screwed into the screw 33 on the inner surface of the end of the tip 6 is provided.
There are 4.

The bottom case 3 attached to the rear end of the outer container 7 of the vacuum double container 1 is formed in a cup shape, and has a locking part 45a having a locking hole 45 for locking a hanging string. It is set up.

The second embodiment shown in FIG.
The engaging surface 21a of the... is formed into a tapered surface, and the engaging groove 23a is formed near one end of the engaging surface 21a. ) Protruding parts 1 of 10a and 11a
An engaging protrusion 24a that engages with the engaging groove 23a is formed on the back surface 22 of 3, 13, . . . . In this embodiment, the shoulder case 2 is pushed into the tip of the vacuum double container 1, and the engaging protrusions 20, 20... are inserted into the notches 12, 12 of the outward flanges 10a, 11a.
... and reaching the back surface 22 of the outward flanges 10a, 11a, when the shoulder case 2 is rotated in the direction P in FIG. The degree of compression with the engagement protrusions 20, 20... increases, and finally the engagement groove 23a and the engagement protrusion 24a engage,
The shoulder case 2 is configured to be securely and firmly attached to the vacuum double container 1 in a state in which rotation is prevented and positioned.

The third embodiment shown in FIG. 4 is characterized in that double engagement protrusions 20a, 20a... are used instead of the single engagement protrusions 20, 20... of the shoulder case 2 in the first embodiment. has. Opening edge 19 of shoulder case 2
The first engaging protrusion 20a on the side is formed similarly to the engaging protrusion 20 of the first embodiment, and has a similar engaging protrusion 24. The second engaging protrusion 20b works in conjunction with the first engaging protrusion 20a to restrict movement of the shoulder case 2 in the axial direction. Note that the other configurations are the same as in the first embodiment.

The present invention can be configured in various ways other than those shown in the above embodiments. For example, the outward flange 10 forming the joining double flange of the vacuum double container 1
a, 11a and the engaging projections 20, 2 of the shoulder case 2
After engaging the two, it is possible to supplementarily attach a screw or use an adhesive in order to prevent rotation between the two. Further, in the above embodiment, the inwardly directed engaging protrusions 20, 20a are formed on the proximal opening edge 19 of the shoulder case 2, and these engaging protrusions 20, 20a... It may be provided at a position deeper from the edge 19. Further, the vacuum double container 1 may be made of stainless steel, or may be made of other metals.

Since the present invention has the above configuration, it can achieve the following effects.

By pushing the shoulder case into the shoulder of the vacuum double container and rotating it by a predetermined angle, the outward flange forming the joint double flange and the engaging protrusion are engaged, and the shoulder case is inserted into the vacuum double container. Since the shoulder case can be securely and firmly attached to the shoulder case, the shoulder case can be attached efficiently.

In other words, according to the present invention, unlike the conventional example, there is no need for screw fixing work, nor is there any need for thread cutting or adhesive work, so the work efficiency can be greatly improved compared to the conventional example. can.

No separate member is required to attach the shoulder case to the vacuum double container by using a joint double flange that also serves as a reinforcing member for the outer container, which is made by joining the shoulder of the outer container and the outer flange of the body. The structure can be simplified.

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway front view of the first embodiment of the present invention, Fig. 2 is a partially cutaway perspective view showing its main components in an exploded state, and Fig. 3 is a partially cutaway front view of the first embodiment of the present invention. FIG. 4 is a perspective view showing the main parts in an exploded state, and FIG. 4 is a perspective view of the main parts of the third embodiment of the present invention. 1... Vacuum double container, 2... Shoulder case, 7...
Outside container, 10a, 11a...outward flange, 1
2, 12a... Notch (disconnection), 20, 20a,
20b...Engaging protrusion.

Claims (1)

[Scope of utility model registration request] In a vacuum metal thermos flask having a metal vacuum double container consisting of a metal inner container and an outer container, the outer container is formed by joining a body and a shoulder, and the joint between the body and the shoulder is provided. An outer flange is formed on each to form a joined double flange, and a disconnection part is formed in a part of the joined double flange. An inward engaging protrusion is formed on the periphery to engage the joint double flange by rotating it by a predetermined angle after passing through the disconnection part, and the shoulder case is engaged with the joint double flange. A vacuum metal thermos flask characterized in that the shoulder case is attached to the vacuum double container by attaching the shoulder case to the vacuum double container.