JPS5849701Y2 - pressure cooker packing - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an improvement in a backing that is press-fitted into a circumferential groove of a lid in a pressure cooker.

The backing fitted to the lid of a conventional pressure cooker is simply a backing made of elastic synthetic resin, etc., with a round cross section and a hollow or solid shape. , by press-fitting this type of backing into a circumferential groove provided on the periphery of the lid, and fitting the lid onto the opening edge of the container;
Furthermore, when both ends of the lifting rod provided on the lid body are locked to the receptacle of the container body and the pressure knob of the lid body is rotated and tightened to press the lid body against the container body, the backing fitted to the lid body As the backing deforms as the body is press-fitted, the backing, which was originally press-fitted into the circumferential groove, may slip out of the circumferential groove or cause the phenomenon of leaning forward.
It may come off the opening edge of the container, significantly reducing the airtightness, and if you use it without realizing it, it may cause steam leakage.
Occasionally, the cooking was unreliable.

The present invention uses a backing that is press-fitted into the circumferential groove of the lid and withstands internal pressure from the pressure regulating valve of the lid, and absorbs the deformation pressure of the backing that occurs when the backing is crimped by fitting the lid to the container. This relates to a backing for a pressure cooker that aims to eliminate the above-mentioned conventional drawbacks by providing a plurality of recesses to prevent deviation from the circumferential groove.One example of this is explained below with reference to the drawings. It is as follows.

In the figure, 1 is a metal container, which is constructed to withstand high pressure.

2 is a metal lid body fitted into the opening of the container 1, a pressure knob 5 is screwed into a screw punch 4 protruding from the center of the lid main body 3, and a front bow is attached to the pressure knob 5. The shaped lifting rod 6 is fitted loosely.

Reference numerals 7 and 7 designate the receiving portions of the lifting rods 6 which are protruded from both the left and right sides of the container 1, and hook portions 8, 8 are formed at the upper ends of the lifting rods 6, which correspond to each other and which lock the ends of the raised lifting rods 6. be.

A is a pressure cooker consisting of the container 1 and the lid 2, and when the lid is closed, both ends of the lifting rod 6 are made to correspond to the receiving parts 7, 7 of the container 1, and the pressure knob 5 is rotated and tightened. Due to the lifting rod 6
, and attach both ends of the lifting rod 6 to the hook portions 8 and 7 of the receiving portions 7, 7,
8, the lid main body 3 is tightly fitted to the opening edge of the container 1, and the container 1 is sealed.

Reference numeral 9 denotes a circumferential groove formed in the peripheral fitting portion of the lid main body 3 in the lid body 2, which expands the peripheral edge of the lid main body 3 upwardly or downwardly (not shown) into an arc-shaped cross section or a substantially gate-shaped cross section. The groove a is directed downward, and if necessary, the bulging part is made slightly thinner to increase the diameter of the inside of the groove, and the groove a is narrowed to prevent the backing from falling off as described later, and to reduce the pressure of the backing. Ensures a secure fit.

Reference numeral 10 denotes a backing made of rubber or synthetic resin that is press-fitted into the circumferential groove 9 of the lid body 2 and configured to withstand internal pressure from a pressure regulating valve (described later) attached to the lid main body 3. The cross-sectional shape is arcuate, approximately trapezoidal, or inverted Y-shaped so as to match the inner surface shape, and the lower end is pressed against the opening edge of the container 1 to act as a backing, and to act as a valve to adjust the internal pressure during boiling. When the internal pressure of the container 1 exceeds the adjustment pressure of the first and second pressure regulating valves, it deforms and lifts the lid 2 together with the steam pressure, releasing the pressure contact with the opening edge. A tongue-shaped sealing piece 11 that functions as a third steam pressure regulating valve for releasing air is provided in a protruding manner.

In addition, in the case of a trapezoidal cross section, a downward or upward cut groove 12 is formed in the middle from one end to the other along the longitudinal direction, and one side is a long press-fitting piece that presses against the inner wall of the circumferential groove 9. 13 is shaped.

Reference numeral 14 denotes a plurality of recesses provided at equal intervals in the backing 10, which are recessed near the outer periphery of the lower part of the backing 10 and have a trapezoidal cross section, etc., and the backing 1 is recessed by fitting the lid body 2 to the opening edge of the container 1.
As the backing 10 is crimped, the backing 10 comes into contact with the upper end of the opening edge of the container 1 and absorbs the deformation pressure, thereby preventing slippage from the circumferential groove 9 and forward bending phenomenon, and ensuring the crimping of the backing 10 to the opening edge of the container 1. Measure the stability of airtightness.

Reference numeral 15 denotes an air guide path provided in the backing 10 at a plurality of locations at equal intervals, at least one end of which corresponds to the groove bottom 16 of the circumferential groove 9, and the other end corresponds to the groove a, leading to the circumferential groove 9 of the backing 10. When press-fitting, air can be vented from the circumferential groove 9.

The air guide path 15 may be a vertical groove recessed on the outside of the backing 10 as shown in FIG. 7, or it may be a through hole as shown in FIG. , when the backing 10 is press-fitted, air in the circumferential groove 9 is guided to the groove a.

17 is a pressure regulating valve attached to the lid main body 3 of the lid body 2;
and a spring 21, and a screw lid 22 for adjusting the elasticity of the spring 21 is screwed onto the upper end of the valve housing 19, and a second pressure adjustment valve that enables higher pressure adjustment than the first pressure adjustment valve (to be described later) is provided. It is a regulating valve.

23 is another pressure regulating valve attached to the lid body 2, and a vent hole 25 is inserted into the tip of the nozzle 24 protruding from the lid body 3 with a predetermined weight.
A weight 26 attached thereto is locked by a pivot portion 27, and serves as a first pressure regulating valve.

28.28 is a handle attached to the left and right sides of the container 1 together with the receiving parts 7, 7, and a fireproof plate 29 is mounted on the lower part thereof.

One embodiment of the backing for a pressure cooker according to the present invention is constructed as described above, and therefore, based on the embodiment, the backing 10 having cut grooves 12 as shown in FIG. If the lid body 2 is to be fitted into the opening of the container 1 as it is, a backing 10 having a plurality of recesses 14 spaced apart from each other in a press-fitted portion into the circumferential groove 9 is inserted into the groove 1.
The backing 10 is fitted into the circumferential groove 9 of the lid main body 3 in the lid body 2 while the groove 2 is closed until the backing 10 is closed, and the backing 10 is made to go around the circumference of the circumferential groove 9.

At this time, by providing the air guide path 15 in the backing 10, the air in the circumferential groove 9 is guided to the groove a of the circumferential groove 9 through the air guide path 15, and the air inside the circumferential groove 9 is guided to the groove a of the circumferential groove 9. 10 can be fitted in a uniform state.

Further, the backing 10 is press-fitted into the inner surface of the circumferential groove 9 due to the elastic action of expanding outward due to the formation of the cut groove 12.
When removed from the circumferential groove 9, the backing 10 is inserted into the circumferential groove 9 while being prevented from falling out. After the backing 10 is accommodated in the circumferential groove 9, the lid 2 is fitted into the opening of the container 1, and the lid 2 is inserted into the circumferential groove 9. The backing 10 that has been press-fitted is pressed against the opening edge of the container 1, and both ends of the lifting rod 6 attached to the lid 2 are made to correspond to the casings 7, 7 of the container 1, and then the lid 2 is pressurized. The knob 5 is rotated to raise the lifting rod 6, both ends of which are locked to the receiving parts 7, 7, and the lid 2 is pressed, so that the lid 2 is tightly fitted to the container 1.

At this time, the backing 10 has a plurality of recesses 14 spaced apart from each other to absorb the deformation pressure of the backing 10 due to contact with the upper end of the opening edge of the container 1, and to prevent the backing 10 from slipping from the circumferential groove 9. Because of this arrangement, the backing 10 does not slip out of the circumferential groove 9 or bend forward as the backing 10 is crimped, and is evenly pressed against the opening edge of the container 1.

As mentioned above, the pressure cooker backing related to this invention is
By rotating and tightening the pressure knob of the lid fitted to the opening of the container, the lifting rod provided therein is raised and lowered, and both ends are locked to the seat of the container, creating the pressure that seals the container. A circumferential groove with the groove facing downward is provided in the circumferential end fitting part of the lid of the cooker, and a pressure adjustment device attached to the lid is attached to the backing of the pressure cooker that is fitted into the circumferential groove. A backing that withstands internal pressure from the valve is formed, and the backing is press-fitted into the circumferential groove to absorb deformation pressure of the backing due to crimping of the backing due to fitting of the lid to the container. Since multiple recesses are newly provided to prevent the backing from slipping from the circumferential groove, after press-fitting this backing into the circumferential groove of the lid,
The lid body is fitted onto the opening edge of the container, and the pressure knob provided on the lid body is rotated to lock both ends of the elevating rod to the seat of the container, and the lid body is pressed and the backing attached to the circumferential groove is pressed. When crimped onto the opening edge of the container, the recess formed in the backing absorbs the deformation pressure of the backing, so as the backing deforms, the backing may move out of the circumferential groove, or it may bend forward (the backing may not move into the circumferential groove). The backing does not blend in well with the circumferential groove and does not cause the backing to partially or completely protrude from the circumferential groove. The backing does not deform when the lid is press-fitted, and does not slip out or protrude from the circumferential groove, resulting in a decrease in airtightness. It exhibits a unique effect that is characterized by unreliable cooking due to steam leakage due to the phenomenon of coming off and leaning forward.In addition, the backing has a structure that can withstand internal pressure through a pressure regulating valve attached to the lid body, so it is difficult to cook when boiling. When the internal pressure of a container becomes high and air is released, the pressure is automatically released using a pressure regulating valve that has been adjusted to a predetermined pressure. When this happens, the backing of the present invention, which is press-fitted onto the lid body, deforms the tongue-shaped sealing piece in conjunction with the steam pressure inside the container to release steam, which prevents clogging. It has the unique effect of being able to prevent explosion accidents caused by this.

[Brief explanation of drawings]

The drawings show one embodiment of the backing for a pressure cooker according to the present invention. Fig. 1 is a partially longitudinal side view of the pressure cooker in use, Fig. 2 is a partially sectional plan view of the same, and Fig. 3 is a partially sectional side view of the same in use. 4 is a partially cutaway bottom view, FIG. 5 is a partially cutaway front view, FIG. 6 is a longitudinal sectional front view of the main part showing the state of press-fitting into the lid body, and FIG. 7 is a partially cutaway front view. FIG. 2 is an enlarged longitudinal sectional front view of a main part of another embodiment. In the figure, 1 is the container, 2 is the lid, 5 is the pressure knob, 6 is the lifting rod, 7, 7 is the seat, A is the pressure cooker, 9 is the circumferential groove, a is the groove, 10 is the backing, 14 is a recess, and 17.23 is a pressure regulating valve.

Claims (1)

[Scope of Claim for Utility Model Registration] By rotating and tightening the pressure knob of the lid fitted into the opening of the container, the lifting rod provided therein is raised and lowered, and both ends are engaged with the receiving part of the container. A circumferential groove with the groove facing downward is provided in the circumferential end fitting part of the lid of the pressure cooker that seals the container, and the pressure cooker has the following requirements for fitting into the circumferential groove. Pressure cooker backing. (b) Form a backing that can withstand internal pressure from the pressure regulating valve attached to the lid. (b) The deformation pressure of the backing due to crimping of the backing due to the press-fitting of the lid to the container is absorbed by the press-fit portion of the backing into the circumferential groove of the lid, and the circumferential groove of the lid is Provide multiple recesses in the backing to prevent it from slipping out of the groove.