JPS635641Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a lid device for an air pot, which uses pressure from a bellows to forcefully feed air into the pot and to pour out liquid contained in the pot.

In an air pot, a pushing body is provided approximately at the center of the lid body that houses the bellows, and by pressing the pushing body against a return spring built into the bellows, the bellows is pressed and air is forced into the pot. When the push plate returns to its original position due to the return spring, it is stuck to the lid body and does not return, resulting in a so-called auto-pot phenomenon in which the inside of the pot is sealed and fluid naturally flows out from the spout due to water vapor pressure. Ta. For this reason, in the past, the bellows pressing stroke of the pusher was shortened, or the gap between the pusher and the opening of the lid body was increased, so that even if the pusher was tilted to some extent, a gap would still be created between the pusher and the lid body. However, the amount dispensed with one pressing operation of the pusher body was small, and the gap between the pusher body and the lid body was large, resulting in poor operability and poor appearance.

The present invention improves the above-mentioned conventional drawbacks and provides a lid device for an air pot that has a simple structure and allows smooth sliding of the pushing body.

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

In the figure, reference numeral 1 denotes a lid main body which accommodates a bellows 2 and is provided on a pot main body 3 so as to be openable and closable.A cylindrical part 5 with an opening 4 is provided at the center of the upper surface, and at the lower end of this cylindrical part 5. is a plurality of notches 6
It is integrally formed of synthetic resin or the like and has a flange portion 7 extending toward the center. Reference numeral 8 denotes a pushing body, and this pushing body 8 has a disk portion 9 that is slightly smaller than the inner diameter of the cylindrical portion 5 and a cylindrical portion 10 that is slightly smaller than the inner diameter of the flange portion 7.
A plurality of guide portions 11 which loosely fit into the plurality of notches 6 of the flange portion 7 are provided on the outer peripheral portion of the cylindrical portion 10 and extend from the back surface of the disk portion 9 to the lower end. A plurality of outwardly protruding stoppers 12 are provided at the lower end, and a cross-shaped rib 13 is erected at the center of the back surface of the disk portion 9, which is integrally formed of synthetic resin or the like.

Reference numeral 14 denotes a protection plate, and in its central part there is an opening 15 that engages with a protrusion 2a that is integrally provided on the upper end surface of the bellows 2 by hollow molding or the like, and a cylindrical column of the pusher body 8 that extends upward. An engaging portion 16 that fits into the inner circumferential portion of the portion 10 with the minimum amount of looseness that will not hinder the rotation of the push plate 8.
It is integrally formed of synthetic resin or the like in a substantially disk shape along the tapered surface of the upper end of the bellows 2, and engages between the pushing body 8 and the bellows 2 as described above, and also closes the lid body 1. It is configured such that it abuts on a plurality of protrusions 7a that protrude downward from the flange portion 7 of the flange 7, with a gap above a certain level between them.

Reference numeral 17 denotes a check valve that is vertically slidably provided at the suction port 2b at the upper end of the bellows 2;
7 comes into contact with the cross-shaped rib 13 of the push plate 8 and is urged upward together with the push plate 8 by a spiral return spring 18 built into the bellows 2, so that the stopper 12 of the push body 8 is pressed against the flange portion 7. It is in contact with the back side of. Here, as described above, since the pushing body 8 and the bellows 2 are provided with a gap greater than a certain level, the suction port 2b of the bellows 2 is not closed by the check valve 17. In addition, 19 is a check valve 17
This is a seal ring provided on the back side of the

Reference numeral 20 denotes a cover of the lid main body 1, and the bellows 2 is attached by fitting the fitting part 2c provided at the lower end of the bellows 2 into an opening in the approximate center thereof, and the fitting part 2c seen through the opening. A lid packing 21 is provided at the lower end and brought into contact with the inner lid 22, and the bellows 2
The inside of the bellows 2 and the inside of the pot are communicated through the jet hole 2d of the bellows 2 and the air hole 22a of the inner lid 22. Note 2
Reference numeral 3 indicates a lock lever that releases and locks the lid when the lid body 1 is opened and closed.

In the above configuration, when the pusher 8 provided in the cylindrical portion 5 of the lid body 1 is pressed downward, the cross-shaped rib 13 of the pusher 8 slides the check valve 17 and closes the inlet 2b of the bellows 2. . Furthermore, the pusher 8
When pressed downward, the bellows 2 is compressed and air is forced into the pot, and when the pusher 8 is released, the return spring 18 returns it to its original position. By repeating this process, the liquid in the pot is poured out. At this time, the protection plate 14 slides up and down together with the bellows 2. Therefore, the inclination of the pushing plate 8 is minimized by the sum of the eccentricity of the protrusion 2a at the center of the upper surface of the bellows 2 and the gap between the engaging part 16 of the positive protection plate 14 and the inner diameter of the cylindrical part 10 of the pushing body 8. being held down,
The horizontal gap between the pushing body 8 and the lid body 1 is slightly wider than the inclination thereof. Further, the eccentricity of the protrusion 2a of the bellows 2 decreases as the bellows 2 becomes compressed and the height decreases due to the action of the return spring 18.
This allows for smooth sliding without getting caught.

As described above, according to the present invention, in order to prevent the so-called auto-pot phenomenon in which hot water is unexpectedly poured out due to the water vapor pressure inside the pot, a protective plate is provided to regulate the vertical position of the pushing body and the bellows. By engaging the protective plate with the bellows and the push body in the left and right directions, the inclination when the push body slides is minimized and there is no chance of it getting caught on the lid body.
Its simple configuration further improves its operability.

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway side view of a lid device for an air pot showing an embodiment of the present invention, Fig. 2 is an exploded perspective view of the lid device, and Fig. 3 is an exploded perspective view of essential parts of the lid device. It is. DESCRIPTION OF SYMBOLS 1... Lid main body, 2... Bellows, 2a... Projection, 5... Cylindrical part, 8... Push body, 10... Cylindrical part, 14... Protective plate.

Claims (1)

[Scope of utility model registration request] A cylindrical portion with an upper surface opening is provided at the top of the lid body housing the bellows, a flange portion having a plurality of notches and extending toward the center is provided at the lower end of the cylindrical portion, and a vertical sliding portion is provided within the cylindrical portion. A movable pushing body is provided, and this pushing body has a disk portion slightly smaller than the inner diameter of the cylindrical portion and a cylindrical portion slightly smaller than the inner diameter of the flange portion, and the outer periphery of the cylindrical portion has the flange. A plurality of guide portions which are loosely fitted into the plurality of notches of the portion are provided extending from the back surface of the disk portion to a lower end thereof, and a plurality of stoppers projecting outward are provided at the lower end of the cylindrical portion. Further, a rib is erected at the center of the back surface of the disc part, and a protective plate is provided between the pushing body and the bellows, and this protective plate engages with a protrusion provided on the upper end surface of the bellows at the center part. It has an opening and an engaging part that extends upward and loosely fits into the inner peripheral part of the cylindrical part of the pushing body, and further abuts the protective plate on a protruding piece that protrudes downward from the flange part. A check valve is provided at the suction port at the upper end of the bellows to close the suction port by being pressed through a rib by the pressure of the pressing body. is provided to be able to freely slide vertically, and this check valve is pressed upward together with the pusher body by a return spring built into the bellows except when the pusher body is pressed to open the suction port, and the stopper of the pusher body An air pot lid device in which the flange comes into contact with the back side of the flange.