JPH0137552Y2 - - Google Patents

Description

[Detailed Description of the Invention] Technical Field The present invention is a sealable stopper for pots, which is particularly easy to put on and take off.
This invention relates to a plug-in type seal that prevents the pot from popping out due to an increase in the internal pressure of the pot, and prevents the contents of the pot from decreasing in temperature.

PRIOR TECHNOLOGY In general, plug-in type closures have the advantage of being easy to use and inexpensive, but in the case of pot closures, if the contents of the pot are boiling water, if the pot is closed with a certain amount of space left, the pot may fall over. The seal may pop out due to steam pressure, posing a danger to the user. For this reason, pot closures are required to have an air vent, but conventionally proposed structures with many radial ribs on the outer periphery of the closure, or coaxial ribs on the outer periphery of the closure. A structure with arcuate ribs cannot prevent the seal from popping out when the cap falls over. In addition, if the cap is fully filled, hot water may gush out when the cap is sealed, causing burns to the user, or a large amount of hot water may leak out, and the heat retention ability is significantly reduced, so it is rarely used today.

Purpose of the invention The technical problem of the present invention is to prevent the stopper from popping out and the heat retention capacity from decreasing due to the increase in internal pressure when the pot falls over, without sacrificing the advantages of the stopper being easy to use and inexpensive.

Structure of the invention The seal for a pot according to the present invention has an annular groove formed in the outer wall of the seal in order to prevent the seal from popping out due to an increase in the internal pressure of the pot and a decrease in heat retaining ability. A seal ring is attached to the inner surface of the mouth part, while a seal ring is attached to the outer wall of the sealing stopper.
A plurality of air vent grooves passing inside the annular groove and extending above and below the annular groove to communicate the inside of the inner container with the outside are formed, and the air vent groove is formed in an outer wall portion below the annular groove. It is characterized by being bisected by a groove and having an arcuate protrusion that can come into contact with the inner surface of the mouth of the inner container when the pot is tipped over.

In an embodiment of the present invention, a flange is formed above the approximately central portion of the seal plug in order to prevent the user from being burned by hot water spewing out when the seal plug is inserted.

In another embodiment, in order to more reliably prevent the seal from popping out, two air vent grooves are formed at opposing positions on the outer periphery of the seal, and two circles are divided into two by each air vent groove. An arcuate convex portion is formed. In another embodiment, the protrusion is formed along the entire circumference of the outer wall. Furthermore, in another embodiment, in order to further improve heat retention, the sealing stopper includes a bottomed cylindrical sealing body, a knob fitted to the top of the sealing body, and a knob disposed inside the sealing body. It consists of a heat insulating member.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

In FIG. 1, 1 is the outer container of the vacuum double-walled pot which also serves as an exterior body, 2 is the inner container,
Reference numeral 3 denotes a bottom cover, and the outer surface of the inner container 2 is plated with silver mirror, and the upper end 2a of the funnel-shaped opening is joined to a position slightly below the upper end of the outer container 1 by welding or other means. There is. Outer container 1
A spout 4 is formed on the upper front end side of the spout 4, and one end of a handle 5 is directly screwed to the upper end side of the back surface of the spout 4.
The other end of the handle 5 is screwed to the bottom cover 3. A lid 7 is attached to the upper end of the handle 5 by a hinge mechanism 6.
is attached so that it can be opened and closed freely.

A pot seal 10 according to the present invention includes a bottomed cylindrical seal body 11, a knob 12 fitted to the upper end thereof, a heat insulating member 13 such as foamed plastic disposed therein, and a seal body 11 having a cylindrical shape with a bottom. Consisting of a seal ring 14 attached to the main body 11, the seal main body 1
An annular groove 15 for mounting a seal ring 14 is formed approximately in the center of the sealing body 1.
Two air vent grooves 16 are formed parallel to the central axis of the seal body 11, and the air vent grooves 16 are formed inside the annular groove 15, that is, from the bottom of the annular groove 15 to the central axis of the seal body 11 and parallel to the axis. (See Figure 3)
It extends above and below the annular groove 15, communicating the inside and outside of the pot. Further, even if the seal plug 10 is provided with a plurality of air vent grooves 16, when the seal falls, steam will concentrate in one of the air vent grooves 16, and the pressure will cause the seal to be tilted, causing the seal to come off. Therefore, in the present invention, an arc-shaped convex portion 17 that is divided into two by the air vent groove 16 is provided on the outer wall portion of the air vent groove 16 below the annular groove 15.
Even if steam is concentrated in one air vent groove 16, the arc-shaped convex portion 17 comes into contact with the inner wall of the inner container 2, thereby preventing the seal plug 10 from tilting and preventing the seal plug 10 from popping out. There is. Note that it is preferable that the radius of this convex portion be as close to the radius of the mouth portion as possible. Therefore, even if the air vent groove 16 is made small, the seal plug 10 will not be tilted, and the air vent groove 1
6 satisfactorily fulfills its function and can prevent a decrease in heat retention ability.

FIGS. 2 and 3 show other embodiments of the pot closure according to the present invention. In order to prevent the contents from spewing out when the closure is closed when the contents are full,
The only difference is that a flange 11a is integrally formed at the upper end of the sealing body 11, and the rest is the same as that in FIG.

When using a pot seal with the above structure, when the seal is inserted into the mouth of the inner container of the pot, the steam inside the pot passes through the inside of the seal ring 14 from the lower end side of the air vent groove 16 to the upper end side 16a. from which it is released into the atmosphere. Also,
Even if the pot topples while filled with boiling water, even if the steam inside the pot concentrates in one of the air vent grooves located in the air phase inside the pot, the protrusion provided around the groove will prevent the opening of the inner container from falling. It comes into contact with the inner surface of the part and prevents the seal from tilting, thereby preventing it from popping out. Furthermore, since the air vent groove can be made smaller, it is possible to prevent a drop in heat retention ability.
Even if hot water or the like is filled up to the mouth of the inner container of the pot, when inserting the airtight stopper, the flange bends the water laterally even if the water comes out, so your hands will not get burned. In any of the embodiments, only the seal ring is in close contact with the mouth of the inner container of the pot, so the force required for inserting and removing the seal can be reduced, and it can be easily attached and detached.

Effects of the device As is clear from the above explanation, the present invention prevents the plug from popping out due to the increase in internal pressure when the pot topples over, and prevents the drop in heat retention ability, without sacrificing the advantages of the plug-in type plug, which are easy to use and inexpensive. Moreover, it has an excellent effect of being able to manufacture a safe and inexpensive sealed stopper with a simple structure.

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway schematic cross-sectional side view of a pot equipped with a pot seal showing an embodiment of the present invention, and Fig. 2 is a cutaway sectional view of a pot seal showing another embodiment of the present invention. Figure 3 is its bottom view. 10... Seat stopper for pot, 11... Seat stopper body, 1
1a...Flange, 12...Knob, 13...Insulating member, 14...Seal ring, 15...Annular groove, 16...Air vent groove.

Claims (1)

[Claims for Utility Model Registration] (1) An annular groove is formed in the outer wall of the sealed stopper, and a sealing ring that is in close contact with the inner surface of the mouth of the inner container of the pot is attached to the annular groove; A plurality of air vent grooves passing inside the annular groove and extending above and below the annular groove to communicate the inside of the inner container with the outside are formed, and the air vent groove is formed in an outer wall portion below the annular groove. A sealing plug for a pot, characterized in that it is bisected by a groove and has an arcuate protrusion that can come into contact with the inner surface of the mouth of the inner container when the pot is tipped over. (2) The seal for a pot as set forth in claim 1 of the utility model registration, wherein a flange is formed above the approximate center of the seal. (3) The seal for a pot according to claim 1 or 2 of the utility model registration claim, wherein two air vent grooves are formed at opposing positions on the outer periphery of the seal. (4) The scope of the utility model registration claim, wherein the seal is composed of a bottomed cylindrical seal body, a knob fitted to the upper part of the seal body, and a heat insulating member is disposed inside the seal body. The hermetic stopper for pots according to any one of Items 1 to 3.