JP3120026B2 - Pressure cooker - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pressure cooker in which a food is put in a container, a lid is sealed to the container, and the container is heated to increase the pressure in the container. It is not preferable to open the lid while remaining in the container, so after releasing the residual pressure in the container with the pressure relief device, the lid is made rotatable with respect to the container to open the lid. It relates to a pressure cooker.

[0002]

2. Description of the Related Art An engaging piece of a lid is superimposed on an engaging piece extending outwardly from an opening edge of a container so that the inside is sealed.
In a pressure cooker that cooks by increasing the internal pressure by heating, when the lid is opened while the inside is in a high pressure state,
Cooked food and broth inside the container splatter out, which is extremely dangerous. Therefore, the pressure cooker is equipped with a safety device for releasing the high pressure in the container after cooking, setting the pressure to atmospheric pressure, and then rotating the lid with respect to the container.

An example of this kind of safety device is disclosed in
18175. In this conventional example, the rotary disk rotates by the rotation of the knob, the safety rod advances and retreats by this rotation, the back surface of the packing can be pressed, and the high pressure in the container is released instantaneously.

[0004]

The above-mentioned prior art uses a vertically movable safety rod, an operating lever, and the like, so that the structure is complicated, and when the lid is not correctly engaged with the container. In order to prevent the pressure inside the container from increasing, another pressure regulating valve and the knob are interlocked, but this interlocking mechanism is deformed during washing with water, and there is a problem that the object gets stuck and the pressurization accident is possible. Leave sex.

[0005] Therefore, an object of the present invention is to provide a pressure cooker which is simple in structure and free from accidents caused by washing with water.

[0006]

SUMMARY OF THE INVENTION The present invention basically solves the above-mentioned problems by using a mechanism for converting the rotary motion of a knob into a reciprocating motion of a first sliding body via a cam mechanism. Preferably, the second sliding body is juxtaposed to the first sliding body. After the pressure is released, the first sliding body is provided with a lock piece that allows the upper handle of the lid to be rotatable with respect to the lower handle of the container, that is, a stopper portion.

Specifically, the present invention provides a plurality of spaced-apart engaging pieces extending outwardly from the periphery of the opening of the container to a plurality of spaced-apart engaging pieces provided on the periphery of the lid. In a pressure cooker which is superimposed and sealed by a packing disposed inside a side wall of the lid, the upper handle fixed to the lid has a pressure relief device therein, and the pressure relief device is provided on the upper handle side. A first sliding body having a cam mechanism for converting the rotary motion of the knob into a linear motion, and a projection which reciprocates in the longitudinal direction of the upper handle and presses the packing locally in response to the linear motion by the cam mechanism; And a pressure cooker characterized in that the knob is held in the upper handle by a slit-shaped metal support plate. Further, the present invention is characterized in that a plurality of spaced-apart engaging pieces extending outwardly from the opening peripheral edge of the container are superimposed on a plurality of spaced-apart engaging pieces provided on the peripheral edge of the lid, In a pressure cooker closed by packing disposed inside the side wall, the upper handle fixed to the lid has a pressure relief device therein, and the pressure relief device controls the rotational movement of the knob on the upper handle side. A cam mechanism for converting the motion into a linear motion, and a first sliding body having a projection which reciprocates in the longitudinal direction of the upper handle in response to the linear motion by the cam mechanism and locally presses the packing, A cam mechanism having a cam portion or a cam groove provided integrally with and below the knob at a position eccentric with respect to a rotation axis of the knob rotatably supported by the hole of the upper handle, The first sliding body further engages with the cam portion on its upper part. Cam portion which engages with the arm groove or the cam groove, and and to freely protruding portion and the engagement of the lower handle and having a stopper portion below the cam portion.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A pressure cooker has a container 1 shown in FIGS. 1 and 2, and a lid 2 shown in FIG. The container 1 has a plurality of spaced-apart engagement pieces 3 extending outwardly on the opening edge. The lid body 2 has a plurality of spaced-apart engagement pieces 4 which are bent inward at the periphery thereof. The lower handle 7 with the convex portion 17 is attached to the container side, and the lower auxiliary handle 7 'may be provided on the opposite side. To attach the lid 2 to the container 1, the engaging piece 4 of the lid 2 is located between the engaging pieces 3 of the container 1, the lid 2 is rotated, and the engaging piece 4 of the lid is Engaging piece 3 of container 1
And is polymerized by sliding into the lower side, and the lid 2 is fixed to the container 1. The width of the two engaging pieces 3 and 4 is changed, and an inward projection 5 is provided on a part of the lid 2 so that the engaging piece 4 of the lid 2 is fitted between the engaging pieces 3 of the container 1. However, it is preferable that the engagement pieces 3 and 4 can be fitted only at specific locations, and that the rotation stroke of the lid 2 be restricted.

Although not shown in FIG. 3, a packing 6 is provided inside the peripheral edge of the lid 2. As shown in FIG. 4, the packing 6 has a shape having a pair of tongue pieces extending inward from the main body. When the lid 2 is held by the container 1, the packing 6 is set so that the height of the base is lower than the inner height between the two formed by the engagement between the container and the lid. A gap is provided between the upper and lower surfaces and the surface facing the upper and lower surfaces, and the upper tongue piece contacts the inner wall surface of the lid 2 and the lower tongue piece contacts the inner wall surface of the container 1 to increase airtightness. To

Referring to FIG. FIG. 5 is a state diagram in which the engagement pieces 3 and 4 of the lid 2 are engaged with the container 1 and the packing is pressed by the pressure relief device 9 described later. The container 1 has a lower handle 7, and the lid 2 has an upper handle 8,
A pressure relief device 9 is arranged in the upper handle 8. The pressure relief device 9 will be described with reference to FIGS. The pressure relief device 9 has at least a knob 10, a first sliding body 11, and a support plate 12. The knob 10 is rotatably held in the hole 8a of the upper handle 8 using the support plate 12. The support plate 12 is a shaft 10
a (fork-shaped or slit-shaped portion such as a Y-shape) that sandwiches the a. This portion is placed on the lower rotation support portion 10 c below and is locked in the groove of the upper handle 8. The knob 10 is integrally formed by injection molding the cam portion 13 at a position on the outer side eccentric from the shaft 10a, the knob 10b, the center of the lower rotation support portion 10c, and the lower rotation support portion 10c.
The first sliding body 11 is a straight cam groove 14 in a direction intersecting the radial direction of the lid for receiving the cam portion 13, and extends inward in the radial direction of the lid and faces the outer peripheral surface of the base portion of the packing 6. A protrusion 15 extending downward, and a protrusion 17 of the lower handle 7 extending downward and a detachable stopper 16 are integrally formed. The first sliding body 11 is arranged in the recess of the upper handle 8 so as to be able to reciprocate in the longitudinal direction.

On the upper surface of the lower handle 7, there is provided a convex portion 17 which can come into contact with the stopper portion 16 of the first sliding body 11, and this convex portion 17, as shown in FIG. Lid 2 when opened
A guide edge 17a for guiding the stopper 16 and a stopper 16 for preventing the cooking lid 2 from being inadvertently rotated.
And a stop portion 17b that comes into contact with the stop portion 17b. Therefore, even if the lid 2 is rotated with respect to the container 1 during cooking (the state of FIG. 9), the stopper 16 hits the stop 17b, and the lid 2 does not rotate with respect to the container 1. The rotation of the lid 2 in the opposite direction is restricted by hitting the end of the engagement piece 3 of the container 1 with the projection 5 inside the lid 2. Please refer to FIG. Before cooking, first, the opening of the container 1 is closed by the lid 2, and both handles 7, 8
(At this time, the knob 10 is at the position when the lid is opened, and the protrusion 15 presses and deforms the packing 6 in FIG.
FIG. 8). Thereafter, in order to be in a stage before cooking can be performed, the knob 10 is rotated to the lid closed position, and the first sliding body 11 is moved by the cam portion 13 of the pressure relief device 9 as shown in FIGS. 9 and 10. First sliding body 11 through cam groove 14
Is moved backward (radially outward), the stopper 16 faces the convex 17 side of the lower handle 7, and the protrusion 15 faces and separates from the packing 6 via a hole in the peripheral edge of the lid 2. When the cooking is completed and there is residual pressure inside, the knob 10 of the pressure relief device 9 is turned in the direction of opening the lid to release the internal pressure. At this time, the rotation of the knob 10 causes the cam portion 13 eccentric to the center of rotation to move the first sliding body 11 to the left as viewed in FIG.
Partially pushes the packing 6 inward, and the packing 6
The base and upper and lower tongue pieces are separated from the container 1 and the lid 2,
The internal high pressure is released to the outside. At this time, the stopper 1
6, as shown in FIG. 7, separates from the convex portion 17 in the left direction in the figure. In addition, the protrusion 5 on the inner side of the lid 2 allows the lid 2 to rotate between the engagement pieces 3, 3 in the opposite direction to the engagement pieces 3 of the container 1.

As shown in FIGS. 11 and 12, a second sliding body 18 is arranged in parallel with the first sliding body 11. The second sliding body 18 is a guide piece 1 that slides in a groove in the upper handle 8.
9 and a front part 2 in contact with an engagement piece 3 formed on the periphery of the container 1
0 and a spring 21 for urging the front part 20 toward the center of the container 1. The second slide 18 is moved by the force of the spring 21 and is independent of the movement of the first slide 11. When the engaging piece 4 of the lid 2 is positioned between the engaging pieces 3 of the container 1, the front part 20 of the second sliding body 18 is in the position of A in FIG. Then, a part of the packing 6 is pushed to make the inside and outside of the container 1 communicate. The rotation of the lid 2 shifts the front part 20 from the position A to the position B, and during that, a part of the packing 6 is pushed in by the front part 20 to communicate the inside and outside of the container 1. Therefore, even if heating is performed at this time, the pressure inside the container 1 does not increase. The front part 20 is the engagement piece 3 of the container 1.
When the upper and lower handles 7 and 8 are brought into contact with each other, the second sliding member 18 compresses the spring 21 and shifts outward in the radial direction of the container, and the front portion 20 (position C in FIG. 1). )
Does not push the packing 6, and the packing 6 keeps the inside of the container 1 airtight as shown in FIGS. 4 and 9. After the state shown in FIG. 9 is obtained, the knob 10 is heated and cooked. When the cooking is completed, as described above, the knob 10 is turned reversely to bring it to the state shown in FIG. In addition, the rotation of the lid 2 is enabled.

FIG. 13 shows a cam groove 14 'provided at a position eccentric from the axis of the knob 10 of the pressure relief device 9, and a cam portion 13 engaged with the cam groove 14' on the top surface of the first sliding body 11. ′
Is provided. In this example, similarly to the example shown in FIG. 6, by turning the knob 10, the first sliding body 11 can reciprocate. Although the illustrated example shows a one-handed handle, in the case of both handles, a pressure relief device may be provided in one of the handles and the second sliding body 18 may be provided in the other.

[Brief description of the drawings]

FIG. 1 is a plan view of a container of a pressure cooker.

FIG. 2 is a side view of a container of the pressure cooker.

FIG. 3 is a bottom view of the lid.

FIG. 4 is a partial cross-sectional view showing a relationship between a packing inside a lid and an edge of a container.

FIG. 5 is a side sectional view showing a state in which the pressure relief device is housed in an upper handle.

FIG. 6 is an exploded perspective view of the pressure relief device.

FIG. 7 is a partial sectional view showing a pressure relief state.

FIG. 8 is a plan view of the state of FIG. 7;

FIG. 9 is a partial cross-sectional view showing a state of packing and the like during pressure cooking.

FIG. 10 is a plan view of the state shown in FIG. 9;

FIG. 11 is a perspective view of a second sliding body.

FIG. 12 is a side view of the pressure relief device.

FIG. 13 is an exploded perspective view of another pressure relief device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Container 2 Lid 3, 4 Engagement piece 6 Packing 7, 8 Handle 9 Pressure relief device 10 Knob 11, 18 Sliding body 13 Cam part 14 Cam groove 15 Projection part 16 Stop part 17 Convex part

Continuation of the front page (56) References JP-A-6-78850 (JP, A) JP-A-59-101926 (JP, U) JP-A-53-36462 (JP, U) JP-A-57-132615 (JP, A) , U) Japanese Patent Publication No. 50-38992 (JP, B1) Japanese Utility Model Publication No. 58-46753 (JP, Y2) Japanese Utility Model Publication No. 60-18175 (JP, Y2) Japanese Utility Model Publication No. 62-4248 (JP, Y2) (58) Field surveyed (Int. Cl. ⁷ , DB name) A47J 27/08-27/092

Claims (5)

(57) [Claims] 1. A plurality of spaced-apart engaging pieces extending laterally outward from an opening peripheral edge of a container are overlapped with a plurality of spaced-apart engaging pieces provided on a peripheral edge of a lid, and In a pressure cooker hermetically sealed by a packing disposed inside a side wall, the upper handle fixed to the lid has a pressure relief device therein, and the pressure relief device linearly rotates the rotary motion of the knob on the upper handle side. At least a first sliding member having a cam mechanism for converting the motion into a motion and a reciprocating motion in the longitudinal direction of the upper handle in response to the linear motion by the cam mechanism and having a projection for locally pressing the packing ; The knob is provided by a metal support plate having a slit shape.
A pressure cooker characterized by being held within a handle . 2. A multi-layer extending outwardly from a peripheral edge of an opening of a container.
Place several spaced engagement pieces around the periphery of the lid
It was superimposed on the provided engaging piece and arranged inside the side wall of the lid.
In a pressure cooker hermetically sealed by packing, the lid
The upper handle fixed to the upper handle has a pressure relief device therein.
The pressure relief device linearly moves the rotary movement of the upper handle side knob.
Cam mechanism for converting to motion, and linear motion by the cam mechanism
Reciprocate in the longitudinal direction of the upper handle and
A first sliding body having a protrusion for locally pressing the first sliding member.
The cam mechanism is rotatably supported in the hole of the upper handle.
To a position eccentric to the rotation axis of the knob
A cam or cam provided integrally with and below the knob
Having a groove, wherein the first sliding body further has
Or a cam groove engaged with the cam groove
And a cam portion which is freely engageable with the convex portion of the lower handle.
A pressure cooker having a stopper portion below the bottom . 3. The apparatus according to claim 1, wherein said first sliding body is provided side by side.
The spring always receives the urging force of the spring, and slides on the engagement piece of the container.
When the packing does not move, press the packing locally inward.
Pressure cooker according to claim 2, comprising a slide body. 4. The method according to claim 1 , wherein the convex portion of the lower handle is connected to the first handle during cooking.
Abuts on a part of the sliding member of the first sliding member and the first sliding member.
The contact relationship is released by the movement of the body toward the body.
And a mechanism for enabling the lid to rotate with respect to the container.
The pressure cooker according to claim 3 . 5. The pressure cooker according to claim 4, wherein the knob is held in the upper handle by a slit-shaped metal support plate.