JPS5820172Y2 - Pressure cooker - Google Patents

Description

[Detailed explanation of the idea] This invention relates to a pressure cooker.

Conventionally, pressure cookers have been known in which the female threaded part of a knob is screwed onto a tension rod provided in the center of the lid in an upright manner, and the lid can be moved up and down by rotating the knob. There is.

However, with this, the lid only moves up and down by the pitch of the thread each time the knob is rotated, so in order to move the lid up and down by the height required to open and close the lid, it is necessary to turn the knob many times. There was a problem in that the lid had to be rotated, making opening and closing the lid troublesome.

This invention was made in order to solve the above-mentioned problem, and the purpose is to provide a pressure cooker whose lid can be opened and closed very easily and which is easy to handle.

The configuration of this invention will be described below with reference to embodiments shown in the drawings.

In the drawing, the pressure cooker includes a pot body 1 having a top wall 1a having an oval opening 2, and a stepped periphery with a U-shaped cross section that is brought into close contact with the lower surface of the periphery of the opening 2 via a backing 5. 4, a knob mounting member 6 provided in an upright manner in the center of the lid 3, and a top wall 1 of the pot body 1.
an arch-shaped strip 12 with a reverse cross section, which extends across the opening 2 of the opening 2 and has the knob mounting member 6 inserted through a hole 13 drilled in the center; A knob 7 that is rotatably attached and whose lower surface 8 is received by the center portion 12b of the strip 12, a lid 3, and the strip 1.
A loose V-shaped leaf spring 10 is interposed between the lid 3 and the lid 3 and is fixed to both sides of the pot body 1 so as to be located on an extension of the short diameter of the opening 2. Handle 16.1
6.

The knob mounting member 6 has a cylindrical shape with a bottom that is open upward, and the knob 7 is attached to a male threaded portion 17 provided at the upper end of the knob mounting member 6.
The female threaded portions 15 of the two are screwed together.

The knob mounting member 6 is fixed in an upright manner at the center of the lid 3 in the following manner.

That is, a downward annular protrusion 18 is provided at the center of the bottom wall of the knob mounting member 6, and a female thread 19 is provided extending from the inner wall of the annular protrusion 18 to the inside of the bottom wall. The lower half of the male threaded tube 20 is screwed in, and the lower half of the male threaded tube 20 protrudes below the convex portion 18.

The annular convex portion 18 having the male threaded tube 20 is connected to the through hole 29 in the center of the V-shaped plate spring 14, and the lid 3 communicates with the through hole 29.
The knob mounting member 6 is inserted into the through hole 21 in the center of the lid from above, and the nut 22 equipped with an O-ring is fitted onto the lower half of the male threaded cylinder 20 that protrudes below the lid 3. It is fixed in a rising shape at the center of 3.

Both ends 12 a , 12 a of the strip 12 are connected to the pot body 1
The strip 12 is fitted onto the upper convex portions 28.28 of the receiving portions 27.27 provided at the upper ends of the handle attachment fittings 26.26 on both sides, so that the strip 12 is non-rotatably passed over the pot body 1. There is.

A through hole 13 is bored in the center of the strip 12. A knob mounting member 6 is inserted into the through hole 13, and the lower surface 8 of the knob 7, which is pushed over the upper end of the mounting member 6, is attached to the strip. 12 is received by a narrow central portion 12b.

The lower surface 8 of the knob 7 has a flat part 9 facing the central part 12b of the strip, two downward protrusions 10 for differential pulling disposed at positions apart from the central part 12b of the strip, and these downward protrusions. An inclined surface portion 11 extending from the lower end of the convex portion 10 to one side and reaching the flat portion 9 is provided.

A safety valve 23 containing a ball 24 and a spring 25 is integrally provided at the lower end of the knob mounting member 6.

In addition, a filter mounting member 30 is fixed to a nut 22 arranged at the center of the lower surface of the lid 3, and a filter 32 is attached to this via a hanging member 31, and a safety valve 23 attached to the lid 3 and a pressure A filter 32 covers the lower surface of the lid 3 from below to prevent food from clogging the hole of the regulating valve (not shown).

Next, the opening/closing operation of the lid 3 will be explained.

For convenience, I will explain how to open it first.

Figure 1 shows the lid 3 in a closed state, and the oval lid 3
is suspended from a band-shaped body 12 fixed across the pan body 1, and its peripheral edge 4 is brought into close contact with the lower surface of the peripheral edge of the opening 2 of the pan body 1 via a packing 5.

The downward convex portions 10.10 on both sides of the lower surface 8 of the knob 7 are received by the central portion 12b of the strip 12 (see FIG. 4).

In this state, after cooking, lift the cone of the pressure control valve to release the pressure inside the pot and make the internal pressure of the pot equal to atmospheric pressure.

Then, the knob 7 is rotated through an angle of about 120° in the direction of loosening the screw, that is, counterclockwise.

In this case, the strip 12 has both ends 12a. 12a are fitted over the upper convex portions 28 and 28 on both sides of the pot body 1, so that they do not rotate together.

This loosens the joint between the female threaded portion 15 of the knob 7 and the male threaded portion 7 of the mounting member 6, and the inclined surface portion 11.1 of the lower surface 8 of the knob
1 is received one after another, and finally a pair of downward convex portions 10.1
0 moves to a position away from the center part 12b on both sides,
A flat portion 9 is received on the upper surface of the central portion 12b (see FIGS. 2 and 3).

On the other hand, the lid 3 quickly descends due to the action of the leaf spring 14 interposed between it and the strip-shaped body 12, and in the end, the lid 3 corresponds to the looseness of the male and female threaded portions 15 and 17. It descends all at once by the sum of the height of the lower knob surface 8 and the height of the downward convex portion 10 from the flat portion 9 of the lower surface 8 of the knob.

Thereafter, lift the knob 7 to a height where both ends 12a, 12a of the band-shaped body 12 integrated therewith are removed from the upper convex part 28.28 of the receiving part 27.27, and then lift the knob 7 up to the height of the band-shaped body 12 and the knob 7. Rotate the lid 3 together by 90' so that the long diameter side of the lid 3 faces the short diameter side of the opening 2 of the pot body 1, and then tilt the lid 3 within the pot body 1 so that the opening opens from its upper end. 2 to be taken out from inside the pot body 1.

Conversely, when closing the lid 3, first insert the lid 3 into the opening 2 of the pot body 1 by reversing the steps above.
The long diameter side of the lid 3 and the long diameter side of the opening 2 are aligned, and both ends 12a of the band-shaped body 12.

12a is fitted over the upper convex portion 28.28 of the receiving portion 27.27.

In this state, the next direction is to tighten the knob 7.
That is, when the male and female threaded portions 15 and 17 are rotated clockwise through an angle of approximately 120°,
The inclined surface portions 11.11 on both sides of the lower surface of the knob 8 gradually come into contact with the central portion 12b of the strip 12, and finally the pair of downward convex portions 10.10 are received by the central portion 12b.

As a result, the lid 3 is pulled up at once by the sum of the height corresponding to the male and female threaded portions 15 and 17 that have been tightened, and the height of the downward convex portion 10 from the flat portion 9 of the lower surface 8 of the knob. Then, the peripheral edge 4 of the lid 3 is attached to the top wall 1 via the backing 5.
a The inside of the pressure cooker is kept in an airtight state by being brought into close contact with the periphery of the inner opening 2.

In the above embodiment, the downward protrusions 10 for lifting the lid are provided on both sides of the lower surface 8 of the knob 7, but these protrusions 10 are located at least at a position on the lower surface 8 of the knob away from the center portion 12b of the strip. It is sufficient if one is provided.

Only one inclined surface portion 10 extending from the lower end of the downward convex portion 10 to the flat portion 9 is provided for each convex portion 10 .

Furthermore, the knob 7 is rotatably attached to the upper end of the mounting member 6 by a screw fitting, but the means for rotatably attaching the knob 7 is not limited to such screw fitting, but may also be any other suitable means. can be used.

As described above, the pressure cooker according to this invention has a flat part 9 on the lower surface 8 of the knob 7 facing the central part 12b of the strip, and at least one flat part disposed at a position away from the central part 12b of the belt. It is provided with a downward protrusion 10 for lifting the lid, and an inclined surface part 11 that extends from the lower end of the downward protrusion 10 to one side and reaches the flat part 9, and the knob 7 can be rotated by a predetermined angle. As a result, the lid 3 can be moved up and down at once by the height of the downward convex portion 10 from the flat portion 9 of the lower surface 8. Therefore, the amount of rotation of the thumb knob 7 to open and close the lid 3 is extremely small. The opening/closing operation of the lid 3 is very simple, and the pressure cooker is easy to handle.

[Brief explanation of drawings]

The drawings show an embodiment of this invention: Fig. 1 is a partially cutaway side view, Fig. 2 is an enlarged bottom view of the knob, and Figs. 3 and 4 respectively show the arrangement relationship between the knob and the strip. 3 is an enlarged sectional view with the lid open, and FIG. 4 is an enlarged sectional view with the lid opened and closed. 1... Pot body, 1a... Top wall, 2...
...Opening, 3... Lid, 4... Periphery, 5... Backing, 6... Knob mounting member, 7... ...Knob, 8...Bottom surface, 9...Flat part, 10...Downward convex part, 11...Slope part, 12...・Band-shaped body, 12a...end, 12b...center, 13...through hole, 14...plate spring, 15... ...Female thread part, 17...Male thread part, 26...Band-shaped body end receiving part, 27...
...Upper convex part.

Claims (1)

[Scope of utility model registration request] a pot body 1 comprising a top wall 1a having an oval opening 2;
An oval lid 3 having a peripheral edge 4 that is brought into close contact with the lower peripheral surface of the opening 2 via a backing 5, a knob mounting member 6 provided in an upright manner at the center of the lid 3, and a top wall of the pot body 1. 1a so as to straddle the opening 2, and the knob mounting member 6 is inserted into the hole 13 drilled in the center, and the strip 12 is provided in the pot body 1 on both sides of the short diameter portion of the opening 2. Both ends 12 a of the belt-shaped body 12,
12 A band-shaped body receiving portion 27 that prevents rotation of a.
．． 27, a spring interposed between the lid 3 and the strip 12 and urging the lid 3 downward; The knob 7 is received by the central part 12b, and the lower surface 8 of the knob 7 has a flat part 9 facing the central part 12b of the belt-like body, and at least one flat part 9 disposed at a position apart from the central part 12b of the belt-like body. This pressure cooker is provided with a downward convex portion 10 for raising the lid, and an inclined surface portion 11 extending from the lower end of the downward convex portion 10 to one side and reaching a flat portion 9.