JPH0226433Y2 - - Google Patents

Description

[Detailed explanation of the idea] (Industrial application field) The present invention relates to a metal thermos flask.

(Prior art and its problems) In general, a metal thermos has a main body made by integrally joining a metal inner container and an outer container so that a vacuum space is formed between them. A shoulder member is fitted onto the outer periphery of the outer container, and members for protecting the connecting portion of the outer container, such as a handle, a cup, and an inner stopper, are also provided. By the way, in conventional metal thermos flasks of this kind, the means for protecting the connection part of the outer container and the means for fixing the handle etc. to the main body are separate, resulting in a problem of high parts and assembly costs. .

(Purpose of the invention) In view of the above-mentioned conventional problems, the present invention has been developed using a metal material that allows the member that protects the connecting part of the outer container and the mounting structure of the handle to be easily and securely and firmly attached to the main body without shifting the position. The purpose is to provide thermos flasks.

(Structure of the invention) In order to achieve the above object, the present invention has two split handle members between each end of two upper and lower protective ring parts each having a concave groove on the inner periphery of the main body and partially open. are integrally formed, and the other of the two split handle members is integrally formed between each other end, and when each protective ring part is once pushed out at the partially open part, a recess on the inner periphery is formed at the upper and lower joint parts. The upper and lower protective ring parts are fastened to the outer surface of the outer container by fitting the two split handle members together so that the grooves fit into each other and connecting the two split handle members. It is.

(Function) The two upper and lower protective ring parts integrally formed with the split handle member are fastened over the outer flange forming the upper and lower joints of the outer container so that the grooves on the inner circumference fit into each other. At the same time, it can be firmly attached to the outer container together with the two-split handle without shifting its position while covering the joint.

In particular, the two-split handle and the two upper and lower protective ring parts are integrally molded as one part, and simply by connecting the two-split handle, the two upper and lower protective ring parts can be fastened to the outer container. In addition, the two upper and lower protective ring parts can be easily attached to the outer flange by pushing each protective ring part apart, reducing the number of parts and assembly. Since the number of man-hours is reduced and the workability is good, it is possible to provide a metal thermos flask that can significantly reduce costs.

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

In the embodiment shown in FIGS. 1 to 3, 1 is the main body of a metal thermos flask, which is composed of an inner container 2 and an outer container 3, both of which are made of metal. They are integrally joined at their open ends with a vacuum space 4 between them. The outer container 3 is formed by welding and joining a shoulder portion 3a, an intermediate cylindrical portion 3b, and a bottom portion 3c, and the welding portion 5a connects the bent edges _3a1 and _3b1 , and the welding portion 5b connects the bent edges. They are formed in outer flanges 41, 41 that protrude toward the outer periphery and are joined to _3b1 and _3c1 , respectively. Protective ring parts 6a and 6b are fastened and fixed over the welded parts 5a and 5b so that the grooves 42 on the inner circumference fit into the outer flange 41. Moreover, these pair of protective ring parts 6a, 6b are integrally formed with the handle part 7.
are integrally connected to each other. Reference numeral 8 denotes a handle member consisting of the protective ring parts 6a, 6b and the handle part 7, and is made of synthetic resin. This handle member 8 is constructed in half on a plane passing through the center of the handle part 7 so that the protective ring parts 6a and 6b can be externally fitted onto the main body 1, and after assembly, the joint surfaces are integrally joined by adhesive or ultrasonic welding. The handle portion 7 is fastened and fixed at both upper and lower ends with screws 9. In addition, screw 9
The head of the machine is covered with a resin cover 10. 1
Reference numeral 1 designates a shoulder member made of synthetic resin that also serves as a spout member and is fitted around the outer periphery of the shoulder portion of the main body 1, and the lower end of an inner circumferential cylinder 12 that extends short from its upper end is connected to a spout gasket 13.
A stopper 14 is screwed into the inner circumferential tube 12, and is in contact with the upper opening edge of the main body 1 in a water-tight manner through the inner cylinder 12. The shoulder member 11 is screwed into a threaded portion 15 formed on the outer periphery of the shoulder portion 3a of the outer container 3, and its lower end portion is coupled and fixed to the ring portion 6a. The fixing structure is as shown in Figures 2 and 3.
A cylindrical portion 16 protrudes from the upper end of the protective ring portion 6a, and a plurality of engagement recesses 17 are formed in the inner periphery of the cylindrical portion 16 in the circumferential direction. A mating projection 18 is provided to protrude downward to prevent the shoulder member 11 from rotating and lifting upward. A screw 19 is formed on the outer periphery of the cylindrical portion 16, into which a cup 20 which also serves as an outer lid is screwed. The cup 20 is a cup body 2 made of synthetic resin.
1, a metal cover 22 that covers the outer circumferential surface and the outer circumferential portion of the upper surface thereof, and a top plate cover 23. 24 is a bottom plate cover.

In the above configuration, the shoulder member 11 is screwed onto the outer periphery of the shoulder portion of the main body 1 with the mouth gasket 13 interposed at the opening edge of the main body 1 using the screws 15, and then the protective ring portion 6a , 6b, the outer flange 41 is fitted into the groove 42 of the outer container 3 to cover the welded parts 5a, 5b, and the engagement recess 1 is formed in the cylindrical part 16 of the protective ring part 6a on the opening side.
The handle member 8 is attached to the main body 1 so that the engagement protrusion 18 of the shoulder member 11 is engaged with the handle member 7, and the joint surfaces thereof are integrally joined and the handle portion 7 is fastened with screws 9. 8 to the main body 1.
In this way, the shoulder member 11 is prevented from rotating and lifting due to the engagement between the groove 42 on the inner periphery of the protective ring portion 6a of the handle member 8 and the outer flange 41. Make sure the main body 1
Fixed. Thereafter, the plug body 14 is screwed into the upper end opening of the shoulder member 11, and the cup 20 is screwed into the protective ring portion 6a to complete the assembly.

The handle member 8 is constructed in two halves and the joint surfaces thereof are glued or welded, but as shown in FIGS. 4 and 5, the divided ends of the protective ring parts 6a and 6b A protrusion 25 is provided on one of the parts to protrude toward the other divided end, and a pivot pin 26 is provided to protrude from this protrusion 25, and an engagement recess into which the pivot pin 26 is fitted is provided in the other divided end. 2
7 may be formed and connected detachably and pivotably. Also, as shown in Figure 6,
One of the divided ends is provided with a protrusion 28 that projects toward the other divided end and has an engagement hole 29 formed therein, and the other divided end is provided with a protrusion 30 that can be engaged with the engagement hole 29. They may be provided in a protruding manner and may be engaged and connected to each other. Furthermore, as shown in FIG.
Thin portions 31 may be formed on a and 6b to provide a hinge function and connect them in an openable and closable manner.

Further, in the above embodiment, the shoulder member 11 is screwed into the screw 15 formed on the outer periphery of the shoulder portion of the main body 1, but the screw 15 of the main body 1 is omitted and the shoulder member 11 is fitted onto the inner periphery of the ring portion 6a. It may also be fixed by wearing it.

FIG. 8 shows a second embodiment. The main difference between this embodiment and the above embodiments is that the lower end of the shoulder member 11 is press-fitted and fixed to the outer periphery of the cylindrical portion 16 of the protective ring portion 6a, and therefore the cup 20 is fixed. The point is that it is screwed onto the outer periphery of the lower end of the shoulder member 11 instead of the outer periphery of the cylindrical portion 16. For details,
An annular protrusion 32 is formed on the upper outer periphery of the cylindrical part 16, and an engaging protrusion 3 is formed on the inner periphery of the lower end of the shoulder member 11.
3 is formed, and the engagement between the two prevents the shoulder member 11 from lifting up and securely fixes it. Further, a screw 34 for screwing the cup 20 is formed on the outer periphery of the lower end of the shoulder member 11. Furthermore, this embodiment is configured so that a plurality of other cups 35 can be accommodated between the stopper 14 and the cup 20. Note that the cup 20 is the same as that of the first embodiment, but to explain in detail, a flange 21a for holding the lower edge 22a of the metal cover 22 is formed on the outer periphery of the lower end of the cup body 21, and A recess 21 formed in the center of the top plate of the main body 21
A top plate cover 23 is press-fitted onto the inner circumferential surface of the metal cover 23, and the inner circumferential edge 22b of the upper end of the metal cover 22 is engaged with and held by a collar 23a protruding from the outer circumference of the top plate cover 23.

In this embodiment, the handle member 8 is first attached and fixed, and then the opening gasket 1 is attached to the opening edge of the main body 1.
A shoulder member 11 is attached to the outer periphery of the shoulder portion of the main body 1 after interposing the shoulder member 3.
By screwing them together, the lower end of the shoulder member 11 can be press-fitted onto the cylindrical part 16 of the protective ring part 6a, and the shoulder member 11 can be fixed to the protective ring part 6a. That is, in this case, the screw 15 functions as a simple press-fitting means. It is also possible to form the shoulder member 11 into a short cylindrical shape and have only the screw 34, as shown by the imaginary line in FIG.

The third embodiment shown in FIG. 9 is almost the same as the second embodiment described above, but a large-diameter cylindrical portion 16a is formed at the lower part of the fitting portion of the shoulder member 11 of the cylindrical portion 16, and a cup is attached to the outer periphery of the large-diameter cylindrical portion 16a. By forming a screw 36 for screwing together the cup 20 and screwing the cup 20 into the cylindrical part 16 instead of the shoulder member 11, there is no possibility that the shoulder member 11 will rotate together when the cup 20 is attached or detached, and the shoulder The difference is that the member 11 is prevented from loosening.

In the fourth embodiment shown in FIGS. 10 and 11, a protective ring portion 6a is extended upward, a coupling ring 37 having an inverted L-shaped cross section is arranged and connected inside the protection ring portion 6a, and a shoulder member is attached to the inner periphery of the lower end of the coupling ring 37. 11, the lower ends of which are fixed together. According to this configuration, the protective ring portion 6
A and the coupling ring 37 form a double-walled frame around the outer periphery of both ends of the main body 1, which has a cushioning function when dropped, and the mouth of the cup 20 is covered by this frame. Therefore, the cup 20 is kept clean. The joining structure between the shoulder member 11 and the coupling ring 37 is such that protrusions 38 are provided at a plurality of locations in the circumferential direction on the outer periphery of the lower end of the shoulder member, and the coupling ring 37
An annular groove 39 into which the protrusion 38 fits is formed on the inner periphery of the lower end, and the protrusion 38 is inserted into the annular groove 3 from above.
A passage groove 40 is formed in the interior of the housing 9 to pass therethrough.

As described above, the present invention can be implemented with various modifications based on the scope of the claims.

(Effect of the invention) The two upper and lower protective ring parts integrally formed with the split handle member are fastened by fitting over the outer flange forming the upper and lower joints of the outer container so as to fit into the grooves on the inner circumference. By doing so, the joint part is covered and at the same time it is firmly attached to the outer container together with the two-split handle without shifting its position.

In particular, the two-split handle and the two upper and lower protective ring parts are integrally molded as one part, and simply by connecting the two-split handle, the two upper and lower protective ring parts can be fastened to the outer container. In addition, the two upper and lower protective ring parts can be easily attached to the outer flange by pushing each protective ring part apart, reducing the number of parts and assembly. Since the number of man-hours is reduced and the workability is good, it is possible to provide a metal thermos flask that can significantly reduce costs.

[Brief explanation of the drawing]

FIG. 1 is a partially sectional front view of the first embodiment of the present invention, FIG. 2 is a cross-sectional view showing details of the connecting part between the protective ring part and the shoulder member, FIG. 3 is an exploded perspective view of the same, and FIG.
The figure is an exploded perspective view showing a modification of the coupling means of the divided part in the protection ring part of the handle member, FIG. 5 is a plan view of the same coupled state, FIG. 6 is an exploded perspective view of another modification, and FIG. The figure is a perspective view showing the schematic shape of yet another modified example of the handle member, FIG. 8 is a cross-sectional front view of the main part of the second embodiment, and FIG. 9 is a cross-sectional front view of the main part of the third embodiment. 10 is a cross-sectional front view of the main part of the fourth embodiment, and FIG. 11 is a cross-sectional plan view taken from - in FIG. 10. 1...Body, 2...Inner container, 3...Outer container, 4
...Vacuum space, 5a, 5b...Welding part, 6a, 6
b...Protective ring part, 8...Handle member, 11...
Shoulder member, {3a ₁ ...bent edge, 3b ₁ ...bent edge}
41... Outer flange, {3b ₁ ... Bent edge, 3c ₁
...bent edge}41...outer flange, 42...concave groove.

Claims (1)

[Scope of utility model registration request] The main body is made by integrally joining an inner container and an outer container made of metal so that a vacuum space is formed between them, and the upper and lower joints of the outer container are bent outward so that the edges thereof are bent together. In a metal thermos flask formed on the joined outer flange, two rings are placed between each end of two upper and lower protective ring parts that have a concave groove on the inner periphery and are partially open.
One of the two split handle members is integrally formed, and the other of the two split handle members is integrally formed between each other end, and the upper and lower parts are joined while each protective ring part is once pushed out at the partially open part. The upper and lower protective ring parts are fastened to the outer surface of the outer container by fitting the grooves on the inner circumference into each other and connecting the two split handle members. A metal thermos flask characterized by: