JPH0223217Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Field of Application> The present invention relates to a pot that uses air pressure to discharge liquid from an inner bottle using air pressure.

<Conventional technology> Conventionally, pots using air pressure have a vacuum double-ended inner bottle with a liquid inlet at the lower end and a liquid outlet at the lower end, and a draining member at the upper end of the outer case surrounding the inner bottle. A bottom member is connected to the lower end, the lower end of the inner bottle is connected to a discharge pipe for discharging liquid, an opening is provided in the center of the draining member to communicate with the upper end of the inner bottle, and a bottom member is connected to the lower end of the inner bottle. An upper lid case with a built-in bellows pump is attached to the upper surface so that it can be opened and closed freely, a lower lid is provided to cover the lower surface of the upper lid case, an opening is provided in the center of the lower lid that communicates with the air outlet at the lower end of the bellows pump, and the lower lid is attached to this opening. A cylindrical sealing rubber is fitted inside to tightly contact the outer periphery of the air outlet of the bellows pump, and an annular rubber valve with a circular longitudinal section to close the opening of the drainage member is installed on the outer periphery of the lower surface of the lower cover. Pressure from the pump supplies compressed air inside the bellows pump into the inner bottle, and the liquid inside the inner bottle is discharged to the outside of the pot through a discharge pipe. Since the annular rubber valve and the annular rubber valve on the outer periphery of the lower surface must be separately attached, the work is extremely complicated and the cost of the product is high. In addition, since the annular rubber valve with a circular longitudinal section was in contact with the outer periphery of the upper surface of the draining member and closing the central opening of the draining member, the annular rubber valve that was away from the central opening of the draining member and the upper surface of the draining member The contact was poor, creating a gap, and the compressed air inside the bellows pump escaped through this gap, greatly reducing the discharge amount.

<Purpose of the invention> The present invention was made in view of the above points, and it is extremely easy to assemble, reduces product cost, and can maintain the desired liquid discharge amount without air leakage even during long-term use. It is to provide a pneumatic pot that can be maintained.

<Structure of the invention> According to the invention, while an annular flat portion is provided on the peripheral surface away from the peripheral wall forming the central opening of the lower lid,
It consists of a vertically hollow cylindrical body part on which the rubber valve is integrally molded, and an umbrella part that extends outward from the lower end of the cylindrical body part and has a folded tip that is greatly curved inward to the center,
The only purpose is to provide an annular groove in the circumferential wall of the cylindrical body portion to narrow the circumferential wall that forms the central opening of the lower lid, and to make the folded portion of the umbrella portion closely contact the upper end of the circumferential wall that forms the central opening of the draining member. This is what we are trying to achieve.

<Example of the invention> Hereinafter, an example of the invention will be described based on the drawings.
The air pressure utilization pot 1 consists of an outer case 2, an inner bottle 3 surrounded by the outer case, a draining member 4 connected to the upper end of the outer case, a beak member 5 connected to the upper end of the outer case, and a beak member 5 connected to the upper end of the outer case. A hinge member 6 connected to the rear part of the upper end, an upper lid case 7 attached to the top surface of the draining member so as to be openable and closable, a bottom member 8 connected to the lower end of the outer case and covering the bottom of the inner bottle, and an indicator of the amount of liquid in the inner bottle. and a liquid ejecting device 9 that also serves as a liquid ejecting device 9 and ejecting the liquid in the inner bottle.

The exterior case 2 is formed of a thin iron plate into a tapered cylindrical shape that slightly widens from the upper end toward the lower end.
A flange is provided at the upper end of this cylindrical shape, and a threaded ring 12 is stretched inside the lower part to curl the lower end inward. The flange of this exterior case is bent into a hook shape with the tip facing inward and downward. The exterior case 2 has a plurality of through-holes for a cover body to which a cover body (to be described later) is locked at the top and bottom of the front wall, and screw holes for a hinge member (to be described later) are bored in the upper rear wall. The threaded ring 12 has a thread for a bottom ring carved on its inner periphery.

The middle bottle 3 is a vacuum double-ended bottle made of glass or stainless steel, with a wide mouth at the upper end for injecting liquid and a narrow mouth at the lower end for dispensing liquid, and is a cylindrical body with the narrow opening at the lower end slightly protruding downward. is formed.

The draining member 4 has an opening 17 in the center that communicates with the wide opening at the upper end of the inner bottle 3, and a receiving part 18 that expands outward from the upper end of this opening in a shallow groove shape. A shoulder portion 19 is provided, and an outer peripheral wall portion 20 is provided that hangs downward from the outer end of the shoulder portion. Reference numeral 21 denotes an annular seal packing, which is interposed between the lower surface of the peripheral wall 17a forming the opening of the draining member and the wide opening at the upper end of the inner bottle, and prevents liquid from leaking.
The shoulder portion 19 has an annular engagement groove on its circumferential surface that engages the flange of the exterior case 2, and has a placement groove on its front surface that engages the rear end of the placement portion of the beak member. are doing. The outer circumferential wall at the upper end of the outer circumferential wall is formed to have an outer diameter smaller than the inner diameter of the outer case in front of the flange. This draining member 4 is inserted from inside the lower end of the outer case 2 and engages the flange of the outer case in the engagement groove of the shoulder of the draining member. A screw hole for a hinge member is bored at the rear end of the outer peripheral wall of the draining member.

The beak member 5 is composed of a front cylinder part, a rear cylinder part, and a mounting part that surrounds both cylinder parts and connects both cylinder parts. The front cylindrical portion of the beak member is hollow at the top and bottom, into which the tip of a discharge pipe (to be described later) is inserted, and at the bottom is a liquid discharge port 29 . The rear cylindrical portion of the beak member is vertically hollow, into which the rear end of a discharge pipe is inserted and fixed, and the lower portion communicates with a pumping pipe of a liquid discharge device, which will be described later. The rear end of the beak member mounting part is engaged with the beak member engagement groove in the shoulder part of the draining member by the engagement piece of the mounting part, and the front circumferential surface of the upper lid case is brought into contact with the peripheral end. The upper surface of the beak member is covered by the front part of the upper lid case. A locking hole is formed on the left and right sides between the front cylinder part and the rear cylinder part of the mounting part of the beak member, and a locking piece that locks the lock claw of the upper lid case described later in this locking hole. is installed protrudingly.

The hinge member 6 has an upper part that fixes the pivot pin for the upper lid case and a lower part that fixes the hinge member to the exterior case, which are integrally molded, and screw holes are drilled in the lower part of the hinge member from the rear wall toward the front wall. A screw is screwed into the screw hole for the hinge member of the exterior case and the screw hole for the hinge member of the draining member through the screw hole and fixed.

The upper lid case 7 includes a bellows pump 37, a top plate 38 placed on the top surface of the bellows pump, a spring 39 that pushes up the bellows pump, and a push valve 40 that opens and closes the center of the upper end of the bellows pump.
and a pushing body 41 that presses the upper surface of the push valve.
Bellows pump 37, upper plate 38, push valve 4
0, an upper lid 42 and a lower lid 43 surrounding the push body 41, and a locking device 44 that locks the upper lid case to the beak member;
It consists of a rubber valve 45 in the center of the lower lid that closes the opening 17 of the draining member.

The bellows pump 37 has a bellows-shaped central outer periphery, openings at the center of the upper and lower ends, and an air intake port 4 at the upper end.
6. The lower end is an air outlet 47, and the peripheral wall forming the air outlet is fitted inside the rubber valve 45. The upper plate 38 is integrally formed with a covering part that covers the upper surface of the bellows pump and a cylindrical part hanging upward from the center of the covering part. The spring 39 has its lower end in contact with the lower inner surface of the bellows pump, and its upper end in contact with the hanging column inside the claw of the push valve, thereby constantly pushing the bellows pump outward. The push valve 40 is formed by integrally molding a disk portion on the top surface, a plurality of hanging pawls spaced apart from each other at a predetermined interval on the circumferential surface of the lower end of the disk portion, and a hanging column hanging from the center of the lower end of the disk portion. There is. The hanging claws of the push valve expand outward and are inserted into the air inlet at the center of the upper end of the bellows pump to abut against the lower end of the peripheral wall forming the air inlet. The pushing body 41 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 42, and a part that expands below the guide cylinder from the lower end of the cylindrical body. The rickety push body and umbrella part are integrally molded. The pressing part of the pushing body has an abutting part integrally molded on the lower center surface thereof, which abuts on the upper surface of the push valve. The pusher umbrella part has a plurality of vertically elongated holes bored in its circumferential surface through which the hanging ribs of the guide tube pass. The pusher umbrella has a notch on the outer peripheral end that does not come into contact with the upper end of the horizontal rib of the upper cover when the pusher is lowered, and when the pusher is rotated and the pusher is not pressed, the outer peripheral end of the pusher cap other than the notch is is brought into contact with the upper end of the horizontal rib, and the pusher is rotated to align the notch and the horizontal rib during pressing. The upper lid 42 is attached to the rear end of the draining member and the outer case via the hinge member 6, and has a plurality of parts that restrict the descent of the pusher by abutting the lower end of the pusher umbrella on the inner peripheral surface excluding the front part. A horizontal rib is provided, and a guide cylinder is provided vertically at the center of the upper surface. The guide cylinder of the upper lid is provided with a plurality of hanging ribs on the outer periphery of the lower end thereof at predetermined intervals and abutting against the upper surface of the covering portion of the upper plate. The front part of the top cover covers the top surface of the beak member, and a projection for fixing a lock plate, which will be described later, is provided on the top surface of the front part.

The lower lid 43 is fitted to the inner periphery of the lower end of the upper lid 42 so as to cover the entire lower surface thereof, and has an opening 49 for air discharge in the center via a rubber valve 45. Lower lid 43
As shown in FIG. 2, this air exhaust opening 49
An annular flat portion 50 is provided on the peripheral surface away from the peripheral wall 49a forming the.

As shown in FIG. 2, the rubber valve 45 is made of heat-resistant and corrosion-resistant synthetic rubber material, and has a vertically hollow cylindrical body 51.
and an umbrella part 52 which extends outward from the lower end of the cylindrical body part and is folded back and is largely curved towards the center inward. The cylindrical portion 51 of this rubber valve is provided with an annular groove 53 on its outer periphery, into which the peripheral wall 49a forming the opening of the lower lid 43 is inserted.

The tip of the umbrella part 52 of this rubber valve is disposed inside the opening 17 of the draining member, and the folded part of the umbrella part is placed inside the opening 17 of the draining member.
The opening 1 is in close contact with the upper end of the peripheral wall 17a forming the
7 is closed. The upper surface of the umbrella part 52 of the rubber valve comes into contact with the flat part 50 of the lower lid 43 to prevent the umbrella part from rising when compressed air from the bellows pump is pumped into the inner bottle. The locking device 44 consists of a locking plate having a substantially inverted U-shape in longitudinal section and a locking ring that locks the locking plate to a protrusion for the locking plate on the top cover 42.
A knob piece is provided on the outside of the left and right side walls of the lock plate, passing through the left and right side of the front part of the top cover, and the locking piece is inserted through the locking hole of the beak member 5 toward the outside of the lower end of the left and right side wall of the lock plate. Each is provided with an engaging locking pawl.

The bottom member 8 includes a bottom ring 55 screwed onto the threaded ring 12;
A tightening member 56 screwed to the bottom ring, a bottom plate 57 screwed to the bottom ring, and a rotating ring 58 coupled to the bottom plate.
The front wall of the bottom plate 57 is provided with a cover body locking groove for locking the lower end of the cover body, which will be described later.

The liquid discharge device 9 includes a lifting pipe 59 that also serves as a liquid volume display tube, a communication pipe 60 that communicates between the lifting pipe and the inner bottle, a discharge pipe 61 that discharges the liquid in the inner bottle, and a communication pipe between the communication pipe and the inner bottle. A first holder 62 that connects the cylindrical body 16 at the lower end opening, and a second holder 6 that connects the pumping pipe and the communication pipe.
3, and a third connecting the discharge pipe and the pumping pipe.
It consists of a holder 64 and a cover body 65 that covers the front surface of the pumping pipe. The pumping pipe 59 is formed into a vertically elongated hollow tube made of transparent material such as glass or synthetic resin, and displays the liquid level in the inner bottle at the liquid level position indicated in the pumping pipe. It is visible from the front of the cover body. Cover body 6
5 has a vertically elongated through-hole in the center, a transparent grooved plate is stretched inside this elongated through-hole, and the upper part of the cover body is screwed to the beak member, and on the left and right rear walls of the center. A cover body locking claw is provided to lock the cover body in the through hole for the cover body of the exterior case, and a cover body locking piece is provided at the lower end and is fitted in the cover body locking groove of the bottom plate 57.

<Effects of the invention> As described above, in the invention, when compressed air is fed into the inner bottle by the pressure of the bellows pump, the upper surface of the umbrella part of the rubber valve comes into contact with the flat part of the lower lid, and at the same time Since the compressed air tries to expand the inside of the folded part of the umbrella part of the rubber valve, the peripheral wall forming the opening of the draining member and the folded part of the rubber valve always come into close contact without separating. By closing the opening of this draining member, air leakage can be prevented and a desired liquid discharge amount can be obtained. Furthermore, the tip of the rubber valve's umbrella is always within the opening of the draining member and comes into contact with the opening at the folded portion of the umbrella, so the opening of the draining member is always closed and the opening is sufficient for long-term use. I can endure it.

Furthermore, the structure is very simple and can be easily installed by simply fitting the cylindrical body of the rubber valve into the opening of the lower cover.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional view of an embodiment of the invention, and FIG. 2 is an exploded longitudinal sectional view showing the main parts of the invention. 1...Pot, 2...Outer case, 3...Inner bottle, 4...Draining member, 7...Top lid case, 37...
...Bellows pump, 43...Lower cover, 45...Rubber valve, 50...Flat part of lower cover, 51...Cylinder part, 5
2... Umbrella portion, 53... Annular groove.

Claims (1)

[Scope of utility model registration request] A vacuum double-necked inner bottle with a liquid inlet at the upper end and a liquid outlet at the lower end is provided, and a draining member is connected to the upper end of the outer case surrounding the inner bottle, and the upper end of the inner bottle is placed in the center of the draining member. An opening communicating with the end opening is provided, a top lid case with a built-in bellows pump is attached to the top surface of the draining member so that it can be opened and closed freely, and hollow rubber valves are fitted vertically into the center opening of the bottom lid that covers the bottom surface of the top lid case. The air outlet of the bellows pump is inserted into the rubber valve, and the lower end of the inner bottle is communicated with the discharge pipe to supply compressed air from the bellows pump into the inner bottle by the pressure of the bellows pump. In a pot that uses air pressure to discharge the liquid in the inner bottle from the tip of a discharge pipe, an annular flat part is provided on the peripheral surface away from the peripheral wall forming the central opening of the lower lid, and the rubber valve is It consists of an integrally molded cylindrical body that is hollow at the top and bottom, and an umbrella that expands outward from the bottom end of the cylindrical body and is folded back and has a large curved tip inward to the center. In addition to providing an annular groove that narrows the peripheral wall that forms the
A pot utilizing pneumatic pressure, characterized in that a folded portion of the umbrella portion is brought into close contact with the upper end of a peripheral wall forming a central opening of a draining member.