JPS5811321Y2 - Thermos flask with heating device - Google Patents

Description

[Detailed description of the invention] This invention relates to an improvement of a thermos flask that heats and keeps warm by hanging a heating element inside the inner bottle.The purpose is to prevent the shaking of the heating element hanging inside the inner bottle. To provide a thermos flask with a heating device that steadily fixes a heating element.

Embodiments of the present invention will be described below with reference to the drawings.

1 is an outer case, 2 is an inner bottle inserted inside the outer case, 9 is a synthetic resin type bottom lid that is screwed to the lower edge of the outer case, and a screw hole in the center of this bottom cover is used to hold the inner bottle. A support 10 is screwed on.

4 is a liquid supply opening 1 in the center facing the mouth of the inner bottle.
1, and has a rising portion 12 on the upper surface of its periphery, and is a synthetic resin type drainage member that is force-fitted into the upper end opening of the outer case, and is engaged and fixed to the curling portion of the upper edge of the outer case. .

3 is the cap of the medium bottle, 7 is the cap of this medium bottle 3
It is a cylindrical heat-resistant waterproof packing made of silicone rubber, etc., which is sandwiched between the pipe member 4 and the drainage member 4. A through hole is bored through which the flat end portion is inserted.

8 is a pipe made of a material with good thermal conductivity such as stainless steel, the tip of which is located near the bottom of the inner bottle, and the rear end of which is located near the bottom of the inner bottle.
As shown in the figure, this flat part 13 is formed into a flat shape.
is inserted into the through hole from the inner wall of the packing 7 and supported.

Reference numeral 5 denotes a heating element such as a positive temperature coefficient thermistor or heater installed at the tip of the pipe 8, and a lead wire 14 connected to the terminal of the heating element passes through the pipe from the tip of the pipe and passes through the flat part at the rear end as described later. Connected to the power supply terminal outside the inner bottle.

This heating element 5 generates heat when electricity is applied through the lead wire, and heats and raises the temperature of the liquid stored inside the inner bottle.However, due to the heat-resistant effect of the above-mentioned knots, the high heat of the pipe is transferred to other parts (such as the mouthpiece). (to prevent conduction).

Reference numeral 19 denotes a power terminal cover equipped with a pair of power terminals 17, etc., connected to the lead wires via connection terminals 15, nuts 16, etc., and this power terminal cup <-19, the outer case 1, and the bottom cover 9 The three parts are aligned with one screw 20.

21 is a handle pivotally connected to the draining member 4, 22 is a discharge pipe protruding from the side of the draining member, and 23 is a handle of the discharge pipe 2.
A suction pipe connected to 2, the lower end of which opens near the bottom of the inner bottle.

Reference numeral 24 denotes an upper lid case that is detachably attached to the upper part of the draining member 4, and an air pressure pump (not shown) is installed inside the upper lid case to suck up the hot water in the inner bottle using air pressure. It is configured to be taken out from a pipe 23 and a discharge pipe communicating with this suction pipe.

As described above, in the present invention, a heat-resistant waterproof packing is provided between the mouth rubber and the draining member, a through hole is bored from the inner wall of the packing toward the outer wall, and a pipe containing a heating element is provided. Since the rear end is formed into a flat shape and this flat part is inserted into the through hole of the packing, it is possible to completely prevent the pipe containing the heating element from shaking.

In other words, the through hole of the packing pressed between the drainage member and the mouth rubber comes into surface contact with the flat part at the rear end of the pipe, and this flat part is crimped and clamped, so the pipe has a built-in heating element and has a large load. The inner bottle does not vibrate within the inner bottle, and damage to the inner bottle due to vibration can be prevented.

Furthermore, it is possible to completely block the escape of heat from the gasket through-holes.

[Brief explanation of the drawing]

Figure 1 is a longitudinal sectional view of the embodiment of the present invention, and Figure 2 is the I of Figure 1.
It is a sectional view taken along the line I-II. 1...Outer case, 2...Inner bottle, 3
...Tag rubber, 4...Draining member, 5...
... Heating element, 7 ... Heat-resistant waterproof packing, 8.
·····pipe.

Claims (1)

[Scope of utility model registration request] This is a thermos with a heating device, in which a draining member 4 is fixed to the mouth of an inner bottle 2 surrounded by an outer case 1 via a cap rubber 3, and a heating element 5 is suspended inside the inner bottle, and the above-mentioned cap rubber and A heat-resistant and waterproof nototsukikin 7 is provided between the draining member and the heating element is built into the pipe 8, and the rear end of this pipe is formed into a flat shape, and the flat rear end of the pipe is shaped into the heat-resistant A thermos flask with a heating device characterized by having a waterproof material inserted between the inner wall and the outer wall.