JPS6336969Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an electric kettle for boiling water and keeping it warm.

[Conventional technology]

Conventionally, electric pots have an inner container that is a single metal bottle surrounded by an outer case, a heating element for boiling water and keeping warm is fixed to the outer periphery of the lower part of this inner container, and a thermos is installed on the outer surface of the bottom near the heating element. A temperature control device such as a Tatsuto is fixed, and the temperature control device indirectly senses the temperature of the liquid in the inner container to turn the heating element on and off.
At the same time, a bottom plate was connected to the lower end of the outer case, and a plug holder was fitted between the lower end of the outer case and the back of the bottom plate. The heat-retaining heating element had to be frequently turned on and off, resulting in increased power consumption, which was uneconomical and caused premature deterioration of the heating element.

[Purpose of invention]

The present invention has been made in view of the above points, and the object is to provide an electric pot that is excellent in heat retention, economical, and safe.

[Structure of the idea]

According to the present invention, an inner container of a vacuum double bottle with open top and bottom ends is provided, a heating element heats the liquid in the inner container and keeps it warm, and a heating element is turned on by sensing the liquid or atmospheric air in the inner container. , a temperature control device that turns off is provided, and the heating element is fixed to the inner bottom of the inner container from the lower end opening of the inner container, while a threaded ring is connected to the inside of the lower end of the outer case surrounding the inner container, and the threaded ring is attached to the bottom of the inner container. Screw on the tightening member that pushes up the tightening member, attach a bottom plate that surrounds the tightening member with a gap between the lower end of the tightening member and the tightening member, and also attach a bottom plate that surrounds the tightening member and create a space between the rear of the tightening member and the rear of the bottom plate. The objective is to be achieved simply by attaching a plug receiver to the plug.

[Example of idea]

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

The electric pot 1 includes an inner container 3 surrounded by an outer case 2, and a drainage member 4 connected to the upper end of the outer case.
and an inner stopper 5 that is detachably attached to the center of the draining member.
and an upper lid case 7 containing a built-in bellows pump 6.
and a heating element 8 that boils and heats the liquid in the inner container.
and a temperature control device 9 that detects the temperature of the liquid or atmospheric air in the inner container and turns the heating element on and off.
It is composed of a bottom member 10 that covers the bottom of the inner container, and a plug receiver 11 that receives an external power source.

The exterior case 2 is made of a cylindrical iron plate,
The upper and lower ends are bent inward to provide a gap with the inner container 3.

The inner container 3 is a vacuum double bottle with a wide mouth at the center of the upper end and a narrow mouth at the center of the lower end.

The draining member 4 has an opening in the center that communicates with the mouth of the upper end of the inner container, and a slot-shaped receiving part is provided diagonally upward from the inner circumferential wall that forms this opening, and hangs downward from the tip of the receiving part. An outer peripheral wall is provided that is force-fitted to the upper end of the case. A horizontal hole is bored at the rear end of the inner circumferential wall that forms the opening of the draining member to guide a temperature regulator lead wire 56 of the temperature regulating device 9 (to be described later) into the gap 71 between the exterior case 2 and the inner circumferential wall of the draining member 4. are doing.

The inner stopper 5 has an inner stopper main body 16 equipped with an air circulation section that guides the air inside the bellows pump 6 into the inner container 3 and a liquid circulation section that leads the liquid inside the inner container, and an upper end of the inner stopper body 16 that is connected to the liquid circulation section of the inner stopper main body. Close the lifting pipe 17 whose lower end hangs down into the inner container, the discharge pipe 18 whose rear end communicates with the liquid distribution part of the inner stopper body, and whose other end leads to the outside of the pot, and the opening in the center of the drainage member. It consists of a cover plate 19 made of stainless steel. This cover plate 19 is attached to the lower surface of the inner stopper main body, has a through hole that communicates with the air circulation part of the inner stopper main body, and has a gasket attached to the outer peripheral end that comes into contact with the lower end of the receiver of the draining member. There is.

The upper lid case 7 includes an upper lid 20, a lower lid 21, a bellows pump 6, a first spring 22 that pushes up the bellows pump, an upper plate 23 that is screwed onto the top surface of the bellows pump, a pusher 25 to which a contact portion 24 is fixed, and a pusher. It consists of a second spring 26 that pushes up the pusher, an operating knob 27 that restricts the vertical movement of the pushing body, a hinge device 28 that hinges the upper lid case to the draining member 4, and a locking device 29 that locks the upper lid case to the upper surface of the draining member. . The upper lid 20 has a hinge device 2 at the rear end of the draining member.
The inner peripheral surface is provided with a plurality of horizontal ribs that can come into contact with the lower end of the umbrella of the pushing body 25, which will be described later, only when the operating knob 27, which will be described later, is closed. A long hole through which the operating knob 27 can be slid is bored at the upper end, and a guide tube 32 is provided vertically at the center of the upper surface. A plurality of hanging ribs are provided on the outer periphery of the lower end of the guide tube 32 at predetermined intervals and abut against the upper surface of the covering portion of the upper plate 23, which will be described later. Lower lid 2
1 is fitted to the inner periphery of the lower end of the upper cover, and an air exhaust hole is bored in the center of the lower end via a rubber valve. The bellows pump 6 has openings at the center of its upper and lower ends, and has upper plate screws carved into the outer peripheral surface of the peripheral wall forming the lower end openings. The upper plate 23 is the bellows pump 6
A cover part that covers the upper surface of the cover part, a cylindrical part hanging above the center of the cover part, and an annular flange part extending from the top of the cylindrical part to the center are integrally molded. A screw for screwing into the upper plate screw of the bellows pump 6 is cut into the inner circumferential wall of the lower part of the cylindrical portion.

The first spring 22 has a lower end connected to the bellows pump 6
The bellows pump is in contact with the lower inner surface of the inside, and its upper end is in contact with the lower surface of the flange of the upper plate 23 to constantly push and expand the bellows pump. The pressing body 25 hangs downward from the pressing part on the top surface and the tip of the pressing part, and is connected to the guide cylinder 32 of the top lid 20.
A cylindrical body part that moves up and down within the cylindrical body and an umbrella part that is wider than the guide tube below the guide tube from the lower end of the cylindrical body are integrally molded. An abutting part that abuts the upper end of the flange part of the upper plate 23 is fixed to the lower center surface of the pressing part with screws, and a steam vent hole is bored in the front part. This contact portion is in close contact with the upper end of the flange portion of the upper plate through the seal member only when the pusher body 25 is pressed, and a gap for air circulation is normally provided between the contact portion and the upper end of the flange portion. A guide tube 32 is provided on the circumferential surface of the umbrella portion of the pusher.
A plurality of vertical holes are formed through which the hanging ribs pass through, and a lever hole through which a lever of an operating knob 27 (to be described later) passes is formed at the rear. The second spring 26 has its lower end in contact with the upper surface of the flange portion of the upper plate 23 and its upper end in contact with the lower surface of the abutting portion, and constantly pushes the pusher upward.

The operating knob 27 consists of a knob protruding from the rear upper surface of the upper lid 20 and a lever that passes through a lever hole of the pushing body 25 inside the upper lid 20 and is screwed to the knob from inside the upper lid. When the operating knob 27 is set to the open position, the lever rotates the pusher 25, causing the lower end of the pusher's umbrella to separate from the upper surface of the plurality of horizontal ribs of the upper lid 20, and press the pressing portion of the pusher with your finger. It can be lowered.

Further, when the operating knob 27 is set to the closed position, the lever rotates the pusher 25, and the lower end of the pusher can be moved toward the upper lid 20.
Even if the pressing part of the pushing body is pressed with a finger while it is in contact with the upper surface of the plurality of horizontal ribs, the pushing body cannot be lowered. 49 is an auxiliary pipe that guides the liquid from the tip of the discharge pipe downward, and 50 is a cover that covers the auxiliary pipe.

The heating element 8 consists of a heater 51 such as a nichrome wire and a covering member 52 surrounding the heater, and this heater 51 generates approximately 450 W when boiling water and approximately 10 W when keeping warm.
It has two things. The cover member 52 is made of an insulating material such as an insulator and is circular in top view and approximately T-shaped in longitudinal section.The cover member 52 is made of an insulating material such as an insulator, and is circular in top view and approximately T-shaped in longitudinal section. It is equipped with a pipe section in the center of the interior. The lead wire of the heater 51 passes through the pipe portion of the cover member while being surrounded by an insulator and is connected to the rear portion of the plug receiver 11, which will be described later. 5
3 is a waterproof and heat insulating packing pressed between the lower surface of the disc of the cover member 52 and the narrow opening at the bottom of the inner container, and 54 is a nut.

The temperature regulator 9 is located at the upper part of the inner container 3, and is connected to a temperature regulator 55 and a temperature regulator lead wire 56.
and a temperature regulator cover member 57.

The temperature controller 55 has a bottom surface in direct contact with the liquid in the inner container or the atmospheric air, and senses the temperature of the liquid in the inner container or the atmospheric air. For example, when the temperature reaches 80 degrees Celsius, the heater of the heating element 8 is turned on. Turn on,
When the temperature reaches 100°C, the heater is turned off.The heater is turned off by a thermal reed switch with an appropriate temperature range for ON/OFF operation.

The temperature regulator cover member 57 is made of a waterproof and heat insulating material, and includes a temperature regulator sheathing part that covers the outer periphery of the temperature regulator 55 except for the bottom surface, a lead wire pipe part that surrounds the temperature regulator lead wire 56, and a lead wire pipe part that surrounds the temperature regulator lead wire 56. It is made up of

The rear end of this lead wire pipe section is connected to the drainage member 4.
It penetrates closely through the horizontal hole. Numeral 58 is a fixing nut for fixing the lead wire pipe section together with the temperature regulator 55 to the draining member 4.

The temperature regulator lead wire 56 passes through the lead wire pipe section and between the inner container 3 and the outer case, one end of which is connected to a heat-retaining lamp 59, and the other end of which is connected to the plug receiver 11.

The bottom member 10 is composed of a threaded ring 60 that is coupled to the lower peripheral end of the outer case, a tightening member 61 that constantly pushes up the bottom of the inner container, a bottom plate 62, and a plug receiving member 73 that fixes a plug receiving member 11, which will be described later. The screw ring 60 has a female thread carved on its inner periphery into which a tightening member 61 is screwed. The tightening member 61 has a through hole in the center for passing the lead wire of the heating element 8, a cylindrical contact portion 63 that contacts the bottom of the inner container on the outside thereof, and a threaded ring 60 on the outermost side. There is a male thread carved into it for screwing. The bottom plate 62 holds the tightening member 61 in a predetermined gap 65.
It is fixed to the tightening member with a plurality of screws 66, a water boiler and a heat-retaining lamp 59 are provided at the front, a notch for fixing a plug receiving member 73 is provided at the rear, and a plurality of through holes are provided at the bottom. It is drilled. The plug receiving member 73 has a gap 68 between the upper part and the rear lower end of the outer case 2 to cover the rear lower end of the outer case, and the lower part covers the notch in the bottom plate, and the plug receiving member 73 is in a state where the plug receiver 11 is fixed. It is fixed together with the exterior case 2, screw ring 60, and tightening member 61 using screws 75. The plug receiver 11 does not directly face the inner container, but an outer case, a threaded ring, and a tightening member are interposed between the plug receiver 11 and the inner container. A substrate 70 for fixing a temperature fuse 69 for the heating element 8 is fixed with screws in a gap 65 between the lower surface of the tightening member and the bottom plate. The lead wire of the heating element 8 does not pass between the inner container and the tightening member and connect to the plug receiver, but passes from the bottom surface of the tightening member into the gap between the bottom plate and connects to the plug receiver. The regulator lead wire 56 passes between the inner container and the outer case through the gap 71 between the draining member and the outer case, further penetrates the outer case, passes through the gap between the rear lower end of the outer case and the plug receiving member, and enters the plug receiver. Connected.

[Effect of idea]

In this invention, the plug receiver that comes into contact with the external power supply is separated from the inner container, and is not fixed directly between the outer case surrounding the inner container and the tightening member, but is fixed to the bottom plate at the rear of the tightening member. Therefore, even if the inner container is damaged or liquid leaks from the upper and lower openings, the plug receiver will not come into contact with the liquid and there is no risk of electric shock, etc., resulting in excellent safety.

Further, even though the heating element, the temperature control device, etc. have lead wires, temperature fuses, etc., the tightening member for tightening the bottom of the inner container, the bottom plate, and the plug receiving member can be easily attached.

[Brief explanation of the drawing]

The drawing is a longitudinal sectional view of an embodiment of the present invention. DESCRIPTION OF SYMBOLS 1... Electric pot, 3... Inner container, 4... Draining member, 8... Heating element, 9... Temperature adjustment device, 10
...Bottom member, 11...Plug receiver, 51...Heater, 55...Temperature regulator, 56...Lead wire for temperature regulator, 57...Cover member for temperature regulator, 60
...Screw ring, 61...Tightening member, 62...Bottom plate, 73...Plug receiving member.

Claims (1)

[Scope of utility model registration request] A vacuum double bottle inner container with open top and bottom ends is provided, and a heating element heats and keeps the liquid in the inner container warm, and a heating element is activated by sensing the liquid or atmospheric air in the inner container.
A temperature control device that turns ON and OFF is provided, and the heating element is fixed to the inner bottom of the inner container from the lower end opening of the inner container, while a threaded ring is connected to the inside of the lower end of the outer case surrounding the inner container, and the threaded ring is attached to the inner bottom of the inner container. A tightening member that pushes up the bottom part is screwed on, and a bottom plate surrounding the tightening member is installed with a gap between the bottom end of the tightening member and the bottom plate, and the rear part of the tightening member and the rear part of the bottom plate are connected. An electric pot characterized by having a plug holder installed in between.