JPH0228837Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to a thermos bottle that heats the liquid inside the bottle.

<Conventional technology> Conventionally, thermos bottles that heat the liquid inside the bottle have
Equipped with a vacuum double-ended glass bottle with an opening at the bottom,
An opening that communicates with the top opening of the double-necked bottle is bored in the center and a shoulder member is provided, and the shoulder member is force-fitted to the top of the exterior case surrounding the double-necked bottle, thereby forming the peripheral wall and shoulder that form the top opening of the double-necked bottle. A small container that communicates with the inside of the double-ended bottle by installing a sealing pad between the lower side of the peripheral wall that forms the opening in the center of the member, and providing a protector that covers the double-ended bottle and suspends the double-ended bottle. A heating element is placed on the outside of the bottom opening of the double-ended bottle, a heating element is placed on the outer wall of the small container, and a plug holder for supplying external power is held on the lower rear wall of the outer case. was heated, a through hole was drilled in the front wall of the small container, a water injection pipe was connected to the hole, a bottom member was connected to the lower end of the outer case, and water was discharged from the tip of the water injection pipe. In the case of thermos bottles, the protector cannot sufficiently withstand the load of the double-ended bottle containing liquid, and it is difficult to hold the bottle in a suspended state. Even with a seal gasket, a sufficient seal could not be achieved and liquid leakage occurred. In addition, the bottom member consisted of a bottom ring that was connected to the lower end of the outer case, a tightening member that came into contact with the bottom of the double-ended bottle, and a separate connecting member that connected the bottom ring and the tightening member. However, the structure was complex and the assembly work was troublesome, leading to a significant increase in product costs. Furthermore, when replacing a double-ended bottle due to damage or temperature failure, remove the connecting member, tightening member, and bottom member from the outer case.
Furthermore, the protector must be removed from the shoulder member, which is a very complicated task.

<Purpose of the invention> The present invention has been made in view of the above points, and the object is to provide a thermos bottle that has a simple structure, is extremely easy to assemble, and has a low product cost.

<Configuration of the invention> According to the invention, a ring-shaped threaded ring is attached to the inside of the lower end of the outer case surrounding the double-necked bottle, small container, and heating element, while the bottom member covers the outer periphery of the small container and an inner cylinder body with a bottomed cylindrical shape whose upper end touches the bottom of the bottle; an outer cylinder body with a hollow interior whose upper end is screwed onto a threaded ring and whose circumferential wall surrounds the inner cylinder body; and an inner cylinder. It consists of integral molding of the connecting part that connects the body and the outer cylindrical body, and only has a through hole drilled in the center of the bottom wall of the inner cylindrical body to vertically pass through the terminal or lead wire of the heating element. It is an attempt to achieve a goal.

<Embodiments of the invention> Hereinafter, embodiments of the invention will be described based on the drawings. The thermos bottle 1 that heats liquid is of the air pressure type and includes a double-ended bottle 2 with upper and lower openings, an outer case 3 surrounding the double-ended bottle, a shoulder member 4 connected to the upper end of the outer case, and a shoulder member 4 connected to the upper end of the outer case. An inner stopper 5 detachably attached to the center opening of the member, an upper lid case 6 detachably attached to the opening of the shoulder member, a small container 7 communicating with the lower end opening of the double-necked bottle, and a liquid inside the double-necked bottle. It consists of a heating element 8 that heats the bottle, and a bottom member 9 that is connected to the lower end of the outer case and pushes up the bottom of the double-ended bottle.

The double-necked bottle 2 is a vacuum double-sided bottle made of glass having a wide mouth at the upper end and a narrow mouth at the lower end, and has a hollow elastic member 12 fitted into the opening at the lower end. The elastic member 12 is formed into a cylindrical shape from a heat-resistant elastic material, and has bida portions 13, 13 having a diameter larger than the diameter of the opening at the lower end at the upper and lower ends.

The exterior case 3 is formed of a thin iron plate into a cylindrical shape, the upper end is bent inward, a threaded ring 10 is stretched on the lower inner wall, and the lower end is curled inward. The screw ring 10 is formed into a ring body, and has a female thread 11 carved on the inner periphery.

The shoulder member 4 is provided with a mortar-shaped mouth receiving part 14 in the center having an opening that communicates with the upper wide mouth of the double-mouthed bottle, and a beak part 15 is provided on the front wall of this mouth receiving part 14.
An outer peripheral wall portion 16 is provided that hangs downward from the upper end of the mouth receiving portion 14. A seal packing is stretched between the lower circumferential wall forming the opening of the mouth receiving portion 14 and the circumferential wall forming the upper end opening of the double-ended bottle.

An annular groove into which the bent portion of the upper end of the outer case 3 is forcefully fitted is bored in the lower outer wall of the outer circumferential wall portion 16, and the upper lid case is pivotally supported at the upper rear end.

The inner stopper 5 is a pumping pipe 17 hanging inside the double-ended bottle.
and an inner plug main body 18 placed on the mouth receptacle of the shoulder member.
and a discharge pipe 19 which is placed in the beak of the shoulder member and whose tip is discharged to the outside. The upper lid case 6 has a built-in bellows pump that pumps air into the double-ended bottle via the inner stopper body 18. 2
0 is a protector that covers the double-ended bottle.

The small container 7 is formed into a small pot shape from a metal material with good thermal conductivity, and is provided outside the opening at the lower end of the double-ended bottle so as to communicate with the inside of the double-ended bottle. The small container communicates with the inside of the double-ended bottle via a hollow joint 21, and a heating element 8 is fixed to the center of the outside of the bottom. The internally hollow joint 21 has one end in contact with the inside of the peripheral wall forming the mouth of the small container 7, and the other end penetrates through the internal hollow of the elastic member 12 and is provided at the inner bottom of the double-ended bottle. The joint 21 at the inner bottom of the double-ended bottle has a female thread for a nut carved on the outer periphery of the tip. The joint 21 has a nut 22 screwed into the female thread for the nut from inside the double-ended bottle, and by screwing this nut, the small container suspended by this joint is suspended outside the bottom opening of the double-ended bottle. , the outer side of the peripheral wall forming the mouth of the small container is in close contact with the pleats 13 at the lower end of the elastic member.

The heating element 8 fixed to the outer wall of the bottom of the small container is a small-capacity semiconductor, which slows down the temperature drop of hot water near the boiling point poured into the double-necked bottle, so that it remains close to boiling water even after a long period of time. It maintains the temperature
A terminal for connecting the lead wire is suspended from the center of the lower wall.

The bottom member 9 includes an outer cylindrical body 23 having upper and lower end openings, an inner cylindrical body 24 having a bottomed cylindrical shape inside the outer cylindrical body, a central inner wall of the outer cylindrical body, and a lower outer wall of the inner cylindrical body. A connecting portion 25 connecting the two is integrally molded.

The outer cylindrical body part 23 has a male screw 26 carved into the outer wall at the upper end to be screwed into the female thread 11 of the screw ring 10, and a disk-shaped back plate 27 which closes the lower end opening of the outer cylindrical body on the inner wall at the lower end.
is fastened with screws.

The inner cylindrical body portion 24 covers the small container 7 and the heating element 8, and has a through hole bored in the center of the bottom wall through which the terminal or lead wire of the heating element 8 directly passes. An internally hollow sealing material 28 is stretched in the through hole of this inner cylindrical body.

A plug receiver 29 for supplying external power is attached to the bottom member 9
It is fixed to the rear wall of the outer cylindrical body part 23 below the connecting part 25. 31 is a pilot lamp, and 32 is a handle.

Lead wires 30 of the heating element 8 pass through the sealing material 28 at the bottom of the inner cylindrical body and are connected to the plug receiver 29 and the pilot lamp 31, respectively.

When assembling, first fix the heating element 8 with the lead wire 30 to the bottom of the small container 7, screw the nut 22 inside the double-ended bottle 2 into the joint 21, and tightly fit the small container 7 to the outside of the lower end of the double-ended bottle. On the other hand, the shoulder member 4 is forcibly fitted to the upper end of the outer case 3, the double-ended bottle 2 whose mouth is sealed is inserted from the lower end of the outer case, and the mouth of the double-ended bottle is placed in the mouth receiving part 14 of the shoulder member 4.
Then, with the lead wire 30 of the heating element 8 penetrating the sealing material 28 of the bottom member 9, screw the outer cylindrical body part 23 of the bottom member 9 into the threaded ring 10 at the lower end of the exterior case 3. The bottom of the double-ended bottle 2 is pushed up and fixed at the upper end of the inner cylindrical body 24 that covers the heating element 8 and the small container 7, and the plug receiver 29 is attached to the rear wall of the outer cylindrical body 23. Connect each terminal of the lead wire 30 that has passed through the sealing material 28 at the bottom of the inner cylindrical body to the pilot lamp 3.
1. A back plate 27 is screwed to the inner wall of the lower end of the outer cylindrical body part 23 after being connected to the plug receiver 29.

<Effects of the invention> According to the invention, the inner cylindrical body part of the bottom member that covers the heating element and the small container and whose upper end abuts the bottom of the double-ended bottle, and the outer cylindrical body part that is screwed onto the lower end of the outer case. The bottom member is integrally shaped with the connecting part that connects the inner cylinder body and the outer cylinder body, and the terminal or lead wire of the heating element is passed through vertically from the center of the bottom wall of the inner cylinder body. By simply screwing the double-ended bottle into the threaded ring at the bottom of the outer case, the double-ended bottle is pushed up, creating a sufficient seal between the top opening of the double-ended bottle and the shoulder member, eliminating any risk of liquid leakage. . In addition, it can be easily disassembled by simply turning the bottom member in the opposite direction to the screwing direction and removing the bottom member from the threaded ring of the outer case, making it extremely easy to replace and repair double-ended bottles, small containers, and heating elements. can.

Furthermore, there is no risk that the terminals or lead wires of the heating element inside the inner cylindrical body will be twisted due to the rotation of the bottom member.
Moreover, the structure is extremely simple, and the bottom member is simply screwed onto the threaded ring of the outer case, so assembly is easy and the product cost can be significantly reduced.

[Brief explanation of the drawing]

The drawing is a partially sectional side view of an embodiment of the present invention. 1...Thermos bottle, 2...Double-ended bottle, 3...Exterior case, 4...Shoulder member, 7...Small container, 8...Heating element, 9...Bottom member, 21...Joint, 22
... Nut, 23 ... Outer cylinder body part, 24 ... Inner cylinder body part, 25 ... Connection part, 28 ... Sealing material, 29 ...
...Plug receiver, 30...Lead wire.

Claims (1)

[Scope of utility model registration request] A vacuum double-ended glass bottle with open top and bottom ends is provided, a cylindrical outer case is provided surrounding the double-ended bottle and the top and bottom ends are bent inward, and a shoulder member is connected to the top end of the outer case. A small container communicating with the double-ended bottle is provided outside the opening at the lower end of the double-ended bottle, a heating element having a terminal is provided at the center of the lower end on the outer wall of the small container, and the double-ended bottle and the small container are attached to the lower end of the outer case. In a thermos flask that heats liquid with the heating element, the bottom member covering the bottom member is combined, a plug holder is provided at the rear of the bottom member, and the terminal of the heating element and the plug holder are connected via a lead wire. A ring-shaped screw ring is attached to the inside of the lower end of the outer case surrounding the mouth bottle, small container, and heating element, while the bottom member covers the outer periphery of the small container.
and a bottomed cylindrical inner cylindrical body part whose upper end abuts the bottom of the double-ended bottle, and an internally hollow outer cylindrical body part whose upper end is screwed into a threaded ring and whose circumferential side wall surrounds the inner cylindrical body part; It consists of a connecting part that connects the inner cylindrical body and the outer cylindrical body and is integrally molded, and a through hole is bored in the center of the bottom wall of the inner cylindrical body to vertically pass through the terminal or lead wire of the heating element. A thermos bottle characterized by: