JPS623047Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a pressure cooker, and more particularly, to a pressure cooker in which centering of a lid and a container is facilitated.

Generally, in a pressure cooker, a locking piece provided on the side wall of the lid is overlapped with an engaging piece provided on the opening edge of the container, and the seal is sealed with a gasket placed inside the side wall of the lid, and the internal pressure is reduced by heating. Turn high and let cook.
When the internal pressure exceeds a predetermined value determined by the pressure regulating valve, it is necessary to activate a safety valve to release the pressure. For this reason, pressure cookers are provided with a safety valve.

The locking piece and engaging piece of such a pressure cooker are:
It is formed substantially horizontally, and the locking piece on the lid side is stacked on top of the engaging piece on the container side. By the way, if the center of the lid and the center of the container are misaligned when the lid is closed, if the food is cooked in that state, the position of the meatballs relative to the container will be different, so the meatballs will be deformed due to internal pressure. Not uniformly,
Large deformations occur locally, shortening the life of the seal, and sometimes deformation of the seal causes internal pressure to escape to the outside.

The present invention is proposed in order to prevent food from being cooked with the center of the lid and container misaligned.In this invention, the engaging piece of the container and the locking piece of the lid are A means for tilting at least one of the above with respect to a horizontal plane is used.

Such an inclination causes the lid to move in the radial direction when internal pressure is applied during cooking, and serves to automatically align the center of the lid with the center of the container.
As a result, the container and lid are locked in the optimal position,
In addition, the packing always occupies the correct position relative to the body, and the deformation due to the internal pressure of the packing becomes uniform.
Also, there is no escape of internal pressure.

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

As shown in FIG. 1, the pressure cooker 1 basically includes a lid 3 having an upper handle 2 and a container 5 having a lower handle 4. As shown in FIG. Note that 6 indicates an auxiliary handle fixed to the container 5 at a position opposite to the lower handle 4.

The container 5 has a cylindrical shape with a bottom and an upward opening,
The opening edge has a plurality of spaced engagement pieces 7 extending radially outward. For example, six engaging pieces 7 are formed so that their centers are equiangular.

Further, an upwardly protruding surface 8 is provided on one side edge of the engaging piece 7.
This supports the gasket and controls the rotation of the container and lid, which will be described later.

A locking piece 10 extending radially inward is formed at the opening edge of the side wall 9 of the lid 3 and has a width corresponding to the width between the engaging pieces 7 described above. The locking piece 10 is formed by press working onto the side wall 9 or by casting.

See Figure 2. After the engaging piece 7 and the locking piece 10 are in a fitted relationship, when the lid 3 is rotated relative to the container 5, the engaging piece 7 and the locking piece 10 overlap each other, and the lid 3 is fixed to the container 5. can be done.

A packing 11 is arranged inside the side wall 9 of the lid 3.
The packing 11 has a main body 12 having an annular shape and a substantially rectangular cross section, and upper and lower tongue pieces 13 and 14 extending from the inner peripheral side of the main body 12, and the lid 3 and the container 5 are in a fixed relationship. At this time, the upper tongue piece 13 contacts the inner wall surface of the lid 3, and the lower tongue piece 14 contacts the inner wall surface of the container 5. The main body portion 12 is in contact with the inner surface of the side wall 9 of the lid 3. In order to secure the position of the gasket 11 as shown in FIG. 1, the protruding surface 8 provided on the engagement piece 7 works effectively. Further, this protruding surface prevents the gasket 11 from being deformed by the downwardly engaging piece 7 when the lid 3 and the container 5 rotate relative to each other.

Further, a locking piece 10 is provided on the side wall 9 of the lid 3.
At least one horizontally long hole 15 can be drilled at a suitable location between them. This hole 15 is located in the main body 1 of the packing 11.
2, when the internal pressure of the container 5 rises abnormally, the gasket 11 is pushed into this hole 15 with internal pressure, and the lower tongue piece 14 is separated from between the engagement pieces 7 of the container 5, etc., to create a gap, and the internal pressure is reduced. It acts as a remover.

A lock valve 16 is installed using the upper handle 2 of the lid 3. The lock valve 16 has a hollow valve body 17 fixed to the lid 3, and a valve stem 18 that can be raised and lowered is disposed in the hollow portion of the valve body 17. Lateral hole 19 at the bottom of the valve stem 18
The interior of the container 5 can communicate with the atmosphere through a vertical hole 20 communicating with the horizontal hole 19. A horizontal L-shaped locking member 21 is provided along the upper surface of the valve body 17 and is slidable laterally. A hole 22 is bored in the horizontal part of the locking member 21, and the valve stem 18 is allowed to rise only when the valve stem 18 faces this hole 22. A spring 23, one end of which abuts against the wall of the upper handle 2, is engaged with the vertical portion of the lock member 21. Lock member 2
At the bottom of the vertical part of 1, there is a claw piece 2 facing radially inward.
Fix 4. The claw piece 24 normally projects into the interior of the lid 3 through a hole 25 made in the side wall 9 of the lid 3, and the hole 22 in the horizontal portion of the locking member 21 faces the upper surface of the valve stem 18. When the lid 3 is placed over the container 5, the claw piece 24 comes into contact with the side edge of the engagement piece 7 of the container 5, so that the locking member 21 is forced to the right in FIG. After that, when the lid 3 is rotated with respect to the container 5 and the engaging piece 7 and the locking piece 10 are overlapped, the claw piece 24 is located between the engaging pieces 7, so that it is connected to the engaging piece 7. The contact is released and the locking member 2
1 assumes the position shown in FIG. 1 by the force of a spring 23. In the state shown in FIG. 1, the inside of the container 5 is as follows.
It communicates with the atmosphere through the horizontal hole 19 and vertical hole 20 of the valve stem 18, but when it is heated and the internal pressure increases,
The internal pressure acting on the pressure receiving surface at the bottom of the valve stem is
The valve stem 18 is pushed up against its own weight, and the horizontal hole 19 enters the valve body 17, cutting off communication between the inside and the atmosphere. The upper part of the valve stem 18 also fits into the hole 22 in the horizontal part of the locking member 21. As a result, while rotating the lid 3 relative to the container 5 and bringing the claw piece 24 into contact with the side edge of the engaging piece 7, an attempt was made to release the overlap between the engaging piece 7 and the locking piece 10. Also, the valve stem 18 is inserted into the hole 22 in the horizontal part of the lock member 21, and movement of the lock member 21 to the right as seen in FIG. 1 is prevented, and the claw piece 24 and the engagement piece 7 are in a locking relationship Therefore, the lid 3 cannot be rotated relative to the container 5. That is, as long as there is internal pressure pushing up the valve stem 18, the lid 3 cannot be removed. this is,
To prevent a lid 3 from being carelessly opened and the boiled food inside blown out even though the residual pressure is relatively high. The internal pressure decreases, the valve stem 18 lowers, and the hole 1
The inside of the container communicates with the atmosphere through the holes 9 and 20, and the upper part of the valve stem 18 is connected to the hole 2 in the horizontal part of the locking member 21.
When it comes off from 2, for the first time, the lid 3 for container 5 is removed.
rotation is possible.

A weight valve 26 is provided in the center of the lid 3. The weight valve 26 has a nozzle body 29 with a vertical hole 27 in the center and a horizontal hole 28 in the lower part with a nut 30.
is used to fix it to the lid 3, and then the nozzle body 2
A weight 31 is arranged to normally close the upper opening of the vertical hole 27 of 9. When the internal pressure of the container 5 reaches a predetermined value or more, the pressure acting on the weight 31 through the horizontal hole 28 and the vertical hole 27 lifts the weight 31 and brings the atmosphere and the inside of the container 5 into communication. Release the internal pressure and maintain the internal pressure at a predetermined value. That is, the weight valve 26 performs a pressure regulating function.

The lid 3 further has a safety valve 32. The safety valve 32 includes a hollow valve body 34 fixed to the lid 3 by a cap nut 33 with a slit, and has a configuration in which a plug 36 having a plurality of horizontal holes 35 is screwed into the valve body 34. . The slit and the horizontal hole 35 act as a restriction against the internal pressure, resulting in a large flow path resistance. Therefore, when the internal pressure exceeds a safe value, the pressure is reduced through the slit, hollow section, and horizontal hole 35 to prevent the pressure from rising above a certain value. Even if the safety valve 32 does not operate, it is safe because the gasket 11 moves into the hole 15 in the side wall of the lid due to the internal pressure and releases the internal pressure to the outside, as described above.

See Figures 3-6. Engagement piece 7 and locking piece 10
At least one of the two is folded so that it is inclined with respect to the horizontal plane. In the example shown in FIG. 3, both the engaging piece 7 and the locking piece 10 are folded downward with respect to the horizontal plane. In the example shown in FIG. 4, both the engaging piece 7 and the locking piece 10 are folded upward with respect to the horizontal plane. In the example shown in FIG. 5, the engaging piece 7 is directed upward with respect to the horizontal surface, and the locking piece
Alternatively, as shown in FIG. 6, the engaging piece 7 may face upward and the locking piece 10 may have its end abutted against the side surface of the engaging piece 7.

The use of such inclined engagement pieces 7 and/or locking pieces 10 facilitates the horizontal movement of the lid 3, so that the lid and the container 5 are automatically aligned by internal pressure. I can do it.

[Brief explanation of the drawing]

Fig. 1 is a sectional view of a pressure cooker according to an example of the present invention, Fig. 2 is a view of the cooker seen from below, showing the relationship between the lid and the container, and Figs. 3 to 6 are views of other embodiments. FIG. 3 is a partial cross-sectional view showing examples. In the figure: 3...lid, 5...container, 7...engaging piece, 10...locking piece, 11...packet, 12...
...Main body, 13, 14...Language piece, 15...Hole, 1
6...Lock valve, 26...Weight valve, 32...Safety valve.

Claims (1)

[Scope of utility model registration request] A plurality of spaced apart engagement pieces formed outward on the periphery of the opening of the container are provided with a plurality of spaced apart locking pieces integrally formed and facing inward on the side wall of the lid, and the lid and the container are connected to each other. In a pressure cooker in which the lid and the container are sealed by overlapping and disposing a gasket on the inside of the side wall of the lid by relative rotation of the lid, at least one of the engaging piece and the locking piece. When the engaging piece and the locking piece are folded so as to be inclined with respect to a horizontal plane, and the engaging piece and the locking piece are overlapped, the tip of the other piece comes into contact with the folded surface of the inclined side of one piece, and when the seal is closed, A pressure cooker, characterized in that it enables alignment movement of the lid with respect to the container at internal pressure.