JPH0240925Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to a pneumatic pot that uses air pressure to dispense liquid from an inner container.

[Conventional technology]

Conventionally, pots using air pressure have a draining member connected to the upper end of the outer case surrounding the inner container, a bottom member connected to the lower end, and an opening provided in the center of the draining member.
An inner plug is removably hung from this opening into the inner container, a top lid case is attached to the top end of the draining member so that it can be opened and closed, and an air pump compresses air between the top lid case and the bottom lid that covers the bottom end of the top lid case. The air pump was equipped with a valve body that opened and closed the center of the upper end of the air pump, an upper plate placed on the upper end of the bellows pump, and a pusher body that pressed the air pump. It is integrally formed with a shaped body and upper and lower end plates, and a short cylinder part is provided in the center of each of the upper and lower end plates, and a rubber button is inserted into the through hole in the center of the lower cover to connect the lower end plate. Because the short cylindrical part of the air pump was forced into place, attaching the air pump to the bottom cover was difficult and extremely complicated. In addition, integrally molded air pumps have the disadvantage that they often generate burrs and are easily deformed, especially in the bellows-shaped body because they are molded thinly and are easily damaged and cannot withstand long-term use.

Therefore, in order to solve these drawbacks, it has been proposed that the pump is formed from a cavity provided in the center of the lower lid and an annular velofram membrane material covering the upper end of this cavity ( (Refer to Utility Model Application Publication No. 59-20838).

[Problem to be solved by the invention] However, the proposal described in the above-mentioned publication has the problem that the pump does not operate smoothly.

This is because the bellofram membrane material according to this conventional proposal is formed into an annular shape, with the opening edge of one end of the small diameter attached to the lower surface of the flange of the pump top plate, and the opening edge of the other end of the large diameter attached to the upper surface of the step of the pump case. Since the bellofram membrane material is fastened with threaded rings, the opening edges at the upper and lower ends receive rotational force in the circumferential direction during the final tightening stage. They are displaced from each other, creating circumferential threads above and below the annular membrane. As a result, when the pump is operated, stress in a direction tilted with respect to the axial direction other than simple vertical expansion/contraction stress acts on the membrane material, making it impossible to smoothly operate the pump operation plate up and down.
In addition, since the upper opening edge of the velofram membrane material is fastened with the threaded ring and the pump top plate, there is a risk that the pump top plate may tilt in vertical movement, so it is expected that the pump operation plate will move up and down smoothly. I have a difficult problem.

Therefore, the object of the present invention is to provide a pneumatic pot that improves the attachment of the velorofram membrane material and allows the pushing body to be easily moved up and down to operate the pump.

[Means for solving problems]

In order to achieve the above purpose, the pneumatic pot of the present invention consists of a cavity provided in the center of the lower lid of the pump and a velorfram membrane material covering the upper end of the cavity. A plate-shaped upper plate part, a contracted part having a V-shaped vertical cross section consisting of an inner wall and an outer wall extending outward from the circumferential end of the upper plate part, and a contracted part extending outward from the circumferential end of the contracted part. It is integrally provided with an outward flange portion extending horizontally, and a flat disc-shaped upper plate pressed by a pusher is brought into surface contact with the upper surface of the upper plate portion, and the outward flange portion is attached to the lower cover. It is sandwiched between the upper end surface of the circumferential side wall forming the cavity of the body and an annular ring body disposed above the upper end surface, and is tightly fixed with screws.

[Effect]

The outward flange portion of the velofram membrane material of the pneumatic pot of the present invention configured as described above is
Because the upper end of the peripheral wall of the lower cover and the annular ring body receive clamping pressure from only the vertical direction, they are tightly fixed.
To uniformly load the pressing force of a pushing body over the entire area of the membrane material without applying unnatural stress as in the conventional case. In addition, the velofram membrane material receives the pressing force of the pressing body through the flat disc-shaped upper plate that is in surface contact with the disc-shaped upper plate part, and unlike the conventional material, the pressure is applied only to the upper opening edge. Compared to the case where the pressing force of the pushing body is applied, the vertical movement of the pushing body is less prone to inclination, and the pushing body is moved vertically in a straight line.

[Example of idea]

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

An electric pot 1 using air pressure includes an inner container 3 surrounded by an outer case 2, a draining member 4 connected to the upper end of the outer case, an upper lid case 6 attached to the upper end of the draining member so as to be openable and closable, and a lower end of the outer case. A bottom member 7 that covers the bottom of the inner container, a heating element 8 that heats the liquid in the inner container, and a temperature controller 9 that turns the heating element on and off by sensing the temperature of the liquid in the inner container or the atmospheric air. and a liquid amount display device 10 that displays the amount of liquid in the inner container.

The exterior case 2 is made of a thin iron plate formed into a cylindrical shape.
The upper and lower ends are curled inward to provide a gap with the inner container 3.

The inner container 3 has an inner wall 11 made of metal such as stainless steel, and an outer wall 1 with a wide opening at the center of the upper end and a narrow opening at the center of the lower end.
It consists of two parts, of which the outer walls are vacuum insulated.

A plurality of upper angles 21, 21 are provided on the upper peripheral surface of the outer wall at predetermined intervals. A plurality of lower angles 22, 22 are provided at predetermined intervals on the lower peripheral surface of the outer wall.

The upper angle 21 is formed by bending a long and thin flat plate, and a bolt hole is bored in the center of the top of the chevron shape.
Both end skirts are spot welded to the upper part of the outer wall 12 of the inner container.

The lower angle 22 is formed by bending a long and thin flat plate in the same way as the upper angle 21. A bolt hole is drilled in the center of the top of the chevron, and the hems of both ends are spot welded to the lower part of the outer wall 12 of the inner container by turning it upside down. are doing.

The drain member 4 has an opening in the center that communicates with the mouth of the upper end of the inner container, and an inner peripheral wall portion 26 that forms this opening.
A beak portion 27 is provided at the front of the upper end, a shoulder portion is provided that extends outward from the upper end of this opening, and an outer peripheral wall portion 30 is provided that hangs downward from the outer end of the shoulder portion and comes into contact with the upper end of the exterior case 2. There is.

The inner peripheral wall 26 that forms the opening of the draining member is provided with through holes at the front and rear, respectively, and a heat-sensitive plate 32 on which sensors 113 and 114 of the temperature regulator 9, which will be described later, are in contact with these through holes is stretched. are doing.

The shoulder portion of the draining member 4 is provided with a plurality of bolt holes corresponding to the upper angles 21, 21 of the inner container, and mounting flanges 37, 37 at the lower ends of the bolt holes.

The draining member 4 and the inner container are fixed by passing bolts through bolt holes in the shoulders of the draining member into the mounting flanges 37, 37 and screwing them onto the upper angles 21, 21 of the inner container.

The upper lid case 6 includes an upper lid 50, a lower lid 51, a bellofram membrane material 40, a first spring 52 that constantly pushes up the bellofram membrane material, and an annular ring body that fixes the peripheral end of the bellofram membrane material to the lower lid. 49, an upper plate 53 that is screwed onto the upper surface of the verofram membrane material, and a pusher body 55 to which a valve body portion 54 that abuts the upper end of the upper plate is fixed.
and a second spring 56 that constantly pushes up the pushing body.
It consists of a hinge device that hinges the upper lid case to the draining member, and a locking device that locks the upper lid case to the upper end of the draining member.

The upper lid 50 is swingably attached to the rear end of the draining member via a hinge device, and has a guide tube extending downward from 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 at predetermined intervals and abut against the upper surface of the covering portion of the upper plate, which will be described later.

The lower lid 51 is fitted to the inner periphery of the lower end of the upper lid 50, and has a cylindrical cavity 57 in the center that is largely recessed toward the mouth of the inner container. This cavity 57 is provided with an annular hanging rib 59 at the lower end corner of the cylindrical circumferential wall, which closely contacts the opening of the drainage member 4 via an annular packing 58, and a rubber valve 6 at the center of the lower wall.
An air exhaust hole 63 is bored through the hole 63.

As shown in FIG. 2, the Verofram membrane material 40 has a disk-shaped upper plate part 64, and a contracted part having a V-shaped longitudinal section and an inner wall 65 and an outer wall 66 extending outward from the peripheral end of the upper plate part toward the lower end. 67 and an annular flange portion 68 extending substantially horizontally outward from the peripheral end of the contraction portion are integrally molded from a flexible material such as rubber.

A thick pleat part 69 is provided at the center of the upper plate part 64 of the Verofram membrane material, and an air intake hole 70 is bored in the center of this pleat part.

As shown in FIG. 2, the annular ring body 49 is integrally formed with a cylindrical portion 71 and an annular flange portion 72 extending outward from the bottom of the cylindrical portion. Then, the annular flange part 68 of the bellofram membrane material 40 is inserted between the flange part 72 of the ring body 49 and the upper end surface of the circumferential wall forming the cavity part 57 of the lower lid 51, and the screw 74 is used to prevent air leakage. It is tightly fixed. The air suction hole 70 of the bellofram membrane material to which the annular flange portion 68 is fixed is closed by the valve body portion 54, which will be described later, by the pressure of the pusher body 55, which will be described later, and the upper plate portion 64 and the inner wall 65 of the contraction portion 67 are closed. is the cavity 57
The air is compressed toward , and the air is pumped into the inner container through the air discharge hole 63 in the cavity.

The upper plate 53 is in the shape of a flat disc, and has a covering part 7 that comes into surface contact with the upper surface of the upper plate part 64 of the velofram membrane material 40 and covers this.
5, and a cylindrical part 76 hanging above the center of the covering part.
and an annular mold flange portion 77 extending from the top of the cylindrical portion to the center are integrally molded. The pleats 69 of the verofram membrane material 40 are attached to the inner circumferential wall of the lower part of this cylindrical portion.

The first spring 52 has its lower end in contact with the lower inner surface of the cavity 57 of the lower lid 51, and its upper end in contact with the inner surface of the pleats 69 of the verofram membrane material 40, thereby constantly pushing up the verofram membrane material.

The pushing body 55 has a pressing part on the top surface, a cylindrical part that hangs downward from the tip of the pressing part and moves up and down within the guide cylinder of the upper lid 50, and a part that expands below the guide cylinder from the lower end of the cylindrical body. The ivy umbrella part is integrally molded.

A valve body part 54 that comes into contact with the upper end of the mold flange part of the upper plate 53 is fixed to the lower center surface of the pressing part with screws, and a steam vent hole 78 is bored in the front part. This valve body portion 54 is in close contact with the upper end of the mold flange portion of the upper plate only when the pusher body is pressed through the seal member,
The central air intake hole is closed, and a gap is normally provided between the mold flange and the upper end for air circulation.

The second spring 56 has its lower end in contact with the upper surface of the mold flange portion of the upper plate, and its upper end in contact with the lower surface of the valve body portion 54 of the pusher, thereby constantly pushing the pusher upward.

The bottom member 7 consists of a bottom ring 87 with a central opening that contacts the lower end of the outer case, a bottom plate 88 that closes the center opening of the bottom ring, and a joint member 89 interposed between the bottom plate and the bottom of the inner container. . The bottom plate 88 is formed into a disk shape from a metal material such as an iron plate, serves also as a heat sink, and its outer peripheral end is in contact with the lower end surface of the peripheral wall forming the central opening of the bottom ring 87. This bottom plate 88 has a joint member screw hole bored at a position on the peripheral wall opposite to the bottom plate screw hole of the joint member 89.

The joint member 89 is made by bending a flat metal plate such as an iron plate into a vertical cross-sectional shape, and a central hole is bored in the center of the top of the chevron shape into which a heating element lead wire 93 and a first holder 94, which will be described later, can be inserted. A lower angle screw hole communicating with the screw hole of the lower angle is drilled on the peripheral surface of the bottom of the inner container facing the lower angle 22.

Screw holes for the bottom plate that communicate with the screw holes for the joint member of the bottom plate 88 are bored in the hem portions of both ends of the joint member, respectively.

The joint member 89 and the inner container 3 are fixed by screwing a screw from the lower end of the lower angle screw hole of the joint member into the screw hole of the lower angle 22 of the inner container. A screw is screwed into the bottom plate screw hole of the joint member 89 from the lower end of the joint member screw hole to fix it.

The exterior case 2 and the bottom ring 87 are connected to the drainage member 4,
The upper angle 21 of the inner container 3 is bolted to the upper angle 21, and the lower angle 22 of the inner container 3 is secured to the bottom plate 88 by screws via a joint member 89, thereby making a sandwich connection.

The heating element 8 passes through the bottom opening of the inner container and is fixed to the inner bottom of the inner container, and consists of a heater 100 that heats the liquid and a cover member 101 that surrounds the heater.

The heater 100 is equipped with two heaters: a heater for boiling water of about 450W when boiling water, and a heater for keeping warm water of about 10W when keeping it warm.

The covering member 101 includes a disk portion that covers the heater 100 and a cylindrical portion that passes through the lower end opening of the inner container. A distribution pipe 104 is inserted through the inner container and communicates with a first holder 94 of a liquid level display device 10, which will be described later, through the other end of the inner container.

The cylindrical body part of the cover member 101 has an annular protrusion bored on the upper outer periphery and a screw carved on the lower outer periphery, and the inner container is inserted into the annular waterproof and heat insulating packing stretched over the lower end opening of the inner container. Push down from the inside until the screw of the cylindrical body protrudes outside the inner container, and then screw the nut onto the screw of the cylindrical body.

This cover member 101 is supported by a protrusion of the cylindrical body inside the inner container and a nut outside the inner container via a waterproof and heat insulating packing, and is tightly attached to the lower opening of the inner container.

Lead wires 93 for each heating element for boiling water and for keeping warm of the heater 100 pass through the cylindrical part of the cover member 101 while being surrounded by an insulator, and are connected to a plug receiver 110, a water boiler, and a heat keeping lamp 111, 112, which will be described later.
is connected to.

Reference numeral 110 is a plug holder connected to the rear lower end of the outer case, and 111 and 112 are lamps for boiling water and keeping warm.

The temperature regulator 9 includes temperature sensors 113 and 114 that detect the liquid or atmospheric air in the inner container and turn on and turn off the heating element 8, and a lead wire 115 for the temperature regulator.

The sensor is a thermostat or the like, and there is an automatic return type sensor 113 that detects the heating or insulation temperature and automatically turns the heating element on and off, and another that turns on the heating element by pressing a manual operation button 95, which will be described later, to reach the boiling temperature. It is equipped with a manual return type sensor 114 that can be maintained for an arbitrary period of time. The automatic return type sensor 113 is attached to the rear end of the inner circumferential wall forming the opening of the draining member, and the manual return type sensor 114 is attached to the tip of the inner circumferential wall forming the opening of the draining member. This manual return type sensor 114 consists of a manual operation button 95 provided at the front of the upper lid case, an interlocking shaft 96 provided at the front lower end of the draining member, and a lever 9 that interlocks with the lower end of the interlocking shaft and operates the manual return type sensor.
7, and springs that return the lever, interlocking shaft, and manual operation button.Press with your finger on the manual operation button to lower the interlocking shaft, and when the interlocking shaft lowers, operate the lever to return the manual operation button. Activate the reset type sensor 114, switch from the automatic reset type sensor to the manual reset type sensor, turn on the heating element by activation of the manual reset type sensor, keep it at the boiling temperature for an arbitrary time, and press your finger on the manual operation button. If it is removed, it will return, and at the same time, the manual return type sensor will not operate and the heating element will follow the instructions of the automatic return type sensor.

Lead wires 115, 115 of the automatic return type sensor and the manual return type sensor are connected to a heating element, a water heater, and a heat-retaining lamp 111, 112.

The liquid level display device 10 also serves as a liquid discharge device, and has a distribution pipe 104 hanging from the inner bottom of the inner container.
, the first holder 94 , and the L-shaped hollow pipe 11
6, the second holder 120, and the liquid level display tube 117
, third holder 118 , and connecting pipe 119
and a discharge pipe 121.

The liquid quantity display tube 117 is formed of a transparent pipe made of glass, acrylic resin, or the like. Distribution pipe 10
The other end of 4 communicates with the L-shaped hollow pipe 116 via the first holder 94, and the other end of the L-shaped hollow pipe communicates with the liquid level display tube 117 via the second holder 120.
The other end of the liquid level display tube is connected to the third holder 11.
It communicates with the discharge pipe 121 via 8. The discharge pipe 121 is placed on the beak of the draining member 4, and has a discharge port 122 at its tip in front of the outer case. Reference numeral 123 is a cover that covers the front part of the outer case, and the front part of the liquid quantity display tube is cut out vertically, and a transparent plate is provided in this cutout part.

[Effect of idea]

In the present invention, the outward flange portion of the bellofram membrane material is tightly fixed between the upper end of the circumferential wall of the lower lid and the annular ring body by receiving clamping pressure from only the vertical direction, so that In addition to being able to apply the pressing force of the pushing body equally over the entire area of the membrane material, the velofram membrane material is By receiving the pressing force of the pusher, it is possible to move the pusher up and down in a straight line without tilting or wobbling from side to side, making the vertical movement of the pusher extremely smooth and allowing for nimble operation of the pusher. became possible.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional view of an embodiment of the present invention, and FIG. 2 is an exploded perspective view showing essential parts of the embodiment of the present invention. 1...Electric pot, 2...Exterior case, 3...
Inner container, 4...Draining member, 5...Top lid case, 4
0...Belloflame membrane material, 51...Lower lid, 57...
Cavity.

Claims (1)

[Scope of utility model registration request] A draining member is coupled to the upper end of the outer case surrounding the inner container, a bottom member is coupled to the lower end, a top cover case is attached to the top end of the draining member so as to be openable and closable, and a gap between the top cover case and a lower cover covering the bottom end of the top cover case is provided. It is equipped with an air pump that compresses air, a valve body that opens and closes the center of the upper end of the air pump, and a pusher body that presses the air pump.The lowering of the pusher body presses the air pump to forcefully feed air into the inner container, and the discharge pipe In a pot that uses air pressure to discharge the liquid in the inner container, the pump consists of a cavity provided in the center of the lower lid and a velofram membrane material that covers the upper end of the cavity. is a disc-shaped upper plate part, a constricted part having a V-shaped vertical cross section consisting of an inner wall and an outer wall extending outward from the circumferential edge of the upper plate part, and outward from the circumferential edge of the constricted part. A flat disc-shaped upper plate pressed by a pusher is brought into surface contact with the upper surface of the upper plate part, and the outward flange part is integrally provided with a substantially horizontally extending outward flange part. A pneumatic pot that is sandwiched between the upper end surface of the circumferential wall forming the cavity of the lower lid body and an annular ring body disposed above it and tightly fixed with screws. .