JP2618367B2 - 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 container for holding food and an engaging piece provided on a lid to prevent the lid from rising due to internal pressure and to prevent the lid from rising due to internal pressure. The present invention relates to a pressure cooker for preventing pressure leakage.

[0002]

2. Description of the Related Art A pressure cooker in which a container is made substantially closed by a lid and is heated to increase the internal pressure and cooks is provided so that the pressure in the container does not increase when the lid and the container are incompletely fitted. And a mechanism for preventing the lid from opening when the internal pressure is high are indispensable for safety.

The former mechanism is disclosed, for example, in Japanese Patent Publication No. 62-4 / 1987.
No. 124, basically, the lock pin of the lock valve of the lid rises when the internal pressure increases, and the lock pin enters the hole at the tip of the lock bar of the former mechanism, and the internal pressure is reduced. Since the engagement between the lock pin and the lock bar is maintained for a long time, the lid cannot rotate with respect to the container, that is, the mechanism keeps the overlapping of the engagement pieces. Therefore, when the residual pressure after cooking is high, the lid is not opened and the food is not blown out.

The latter mechanism, that is, the pressure-inhibiting mechanism at the time of incomplete fitting, is retracted radially outward when in contact with the engaging piece of the container as disclosed in Japanese Utility Model Publication No. 59-35146, and between the engaging pieces. When it is located, it is extruded radially inward and has a sliding body that partially opens the packing to the outside air. This configuration prevents the internal pressure from leaking to the outside from the partially opened packing and prevents the internal pressure from increasing even when the packing is heated in a state where the engagement pieces of the container and the lid are not correctly overlapped.

The above-described mechanism for preventing the lid from opening at the time of residual pressure and the mechanism for preventing pressure from increasing when incompletely fitted are provided individually or both in the pressure cooker. Absent.

[0006]

SUMMARY OF THE INVENTION The present invention solves the problem of developing a pressure cooker having a simple structure having both the function of preventing pressure rise at the time of incomplete fitting and the function of preventing the lid from opening at the time of residual pressure. Tasks to be done.

[0007]

According to the present invention, in order to solve the above-mentioned problems, basically, a pair of sliding members are incorporated into a handle of a lid, and both sliding members are applied to an engaging piece of a container. Use a means that can be freely contacted.

[0008] Specifically, the present invention is directed to a method for superposing a plurality of spaced-apart engaging pieces provided on the periphery of an opening of a container on a plurality of spaced-apart engaging pieces provided on a periphery of a lid. In a pressure cooker for hermetically sealing both by a packing disposed inside a side wall of a body, a handle fixed to the lid is provided with a biasing force of a first sliding body and a second spring which receive a biasing force of a first spring. A second sliding body received by the first and second sliding bodies, the first and second sliding bodies abutting on engagement pieces of the container to be individually movable in and out of the container in the radial direction; When the engagement pieces do not overlap with the engagement pieces of the lid, the first sliding body pushes the packing inward when the two engagement pieces are not engaged, and the engagement piece of the container is The second sliding member that moves independently of the first sliding member when the two engaging members overlap with the engaging member; Slide of providing pressure cooker, characterized in that to engage the locking pin of the lock valve that is fixed to the lid.

[0009]

When the lid is rotated with respect to the container and the engaging piece of the lid is engaged with the engaging piece of the container, the first sliding body comes into contact with the engaging piece of the container and is radially outward. And release the pressing on the packing, the second sliding body in parallel moves radially inward, and the lock pin of the lock valve engages with the lock bar. The outward movement of the lock bar in the radial direction is impossible until the lock pin is lowered, and the operation is manually performed by the lever of the second slide.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A pressure cooker 1 has a container 2 for storing ingredients to be cooked, and a lid 3 for closing an opening of the container 2 and preventing internal pressure from leaking to the outside. As shown in FIG. 2, a plurality of engaging pieces 4 extending outward in the radial direction are provided at the opening edge of the container 2 at a distance. Similarly, a plurality of spaced-apart engagement pieces 5 are provided on the outer peripheral edge of the lid 3.
Is provided. When the lid 3 is placed on the opening of the container 2, the engaging pieces 5 of the lid 3 are located between the engaging pieces 4 of the container 2 as shown in FIG.
When the cover 3 is turned, the engagement piece 5 of the cover 3
Move to the lower side, and are in an overlapping state. The packing 6 is arranged on the inner peripheral side of the lid 3. The packing 6 allows the internal pressure to rise due to heating. That is, the packing 6 functions to prevent the internal pressure from leaking to the outside.

[0011] Handles 7, 7 'are attached to the left and right of the container 2,
Handles 8, 8 'are also attached to lid 3. In use, the handles 7 and 8 are vertically overlapped. A known safety valve 9 is provided on the lid 3. When the internal pressure exceeds the design value, the safety valve 9
It works to release internal pressure to the outside. A known weight valve 10 is arranged at the center of the lid 3. When the internal pressure rises more than necessary, the weight valve 10 lifts the weight, leaks only unnecessary pressure to the outside, and keeps the internal pressure constant. The lock valve 11 is arranged on the handle 8 of the lid 3. As shown in FIGS. 3 and 4, the lock valve 11 has a valve body or lock pin 12 and a display pin 1.
When the lock pin 12 is raised by receiving the internal pressure, the display pin 13 is also raised, and its tip protrudes from the handle 8 to inform the user that the internal pressure is high.

A triangular disc seat 13 'for preventing water droplets, which is provided with a linear shape on the upper surface for preventing intimate contact, is provided below.
A gap 15 is left between the display pin 13 having a point projection 13 "for preventing inclination at the corner of the seat 13 'and the display pin hole 14. In the example shown in FIG. Used
As shown in FIG. 6, a triangular display pin hole 14 may be formed in the round bar display pin 13 and gaps 15 may be formed at three corners. Further, as shown in FIG. 7, a triangular pin hole 14 is combined with a display pin 13 having a triangular side dented inward.

The lid handle 8 is provided on the weight pin 10 side of the display pin 13.
To form a integrally formed triangular wall 16 (see FIGS. 3, 4, and 8). This wall 16 prevents the broth leaked from the weight valve 10 from adhering to the display pin 13. Further, FIG.
As shown in FIG. 4, a fluorine coating such as Teflon is lined on the inner wall of the handle around the display pin hole 15 to prevent the display pin 13 from adhering to the inner wall of the handle so that it cannot be dropped by its own weight. I do. That is, when the internal pressure is reduced, the display pin 13 always falls by its own weight together with the valve body, that is, the lock pin 12.

As shown in FIG. 9, holes 17 and 18 for a pair of sliding members 20 and 21 are provided inside the handle 8, and the hole 18 is opened to the outside. Please refer to FIG. 10 and FIG. Hole 17
The first sliding body 20 is disposed under the biasing force of the spring 27. In the state of FIG. 10, the first sliding body 20 is
The stepped portion 20 'is locked in the side hole of the lid 3 so as not to come into contact with the engaging piece 4, and is located inward in the radial direction, and the tip of the packing 6 pushes the packing 6 as shown in FIG. As a result, condition 2
The inside communicates with the outside through this portion, and the internal pressure does not increase even when heated.

A second sliding member 21 is arranged in the hole 18 in parallel with the first sliding member 20 so as to be movable individually. The second sliding body 21 has a main body 23 that receives the urging force of the spring 22, and the main body 23 includes a lever 24 that protrudes outside from the opening 19 shown in FIG. By operating the lever 24,
The main body 23 can move forward and backward in the radial direction. One end of the lock bar 25 is fixed to the main body 23. The lock bar 25 has a hole 26 at its tip for receiving the lock pin 12.

A recess 28 is provided in one of the engagement pieces 4 of the container 2. The concave portion 28 has a flat bottom surface, a gentle inclined side surface and a vertical side surface, and a recess 29 is provided on the vertical side surface. On the other hand, the tip of the main body 23 of the second sliding body 21 is composed of a vertical side surface and an arc surface, and further, the main body 23 has a wall surface 30.
Has.

After the lid 3 is placed on the container 2 and before the lid 3 is turned and the sliding body 20 and the main body 23 are engaged with each other, the engaging pieces 4 and 5 are in the relationship shown in FIG. The two sliding bodies 20 and 21 occupy the positions shown in FIG. When the lid 3 is turned, the distal end of the main body of the second sliding body 21 comes into contact with the engaging piece 4 and is moved outward in the radial direction. Further, the rotation of the lid 3 brings the tip of the first sliding body 20 into contact with the engaging piece 4 and pushes it down to bring the packing 6 in the state of FIGS. 11 and 12 into the sealed state of FIG. . The tip of the main body 23 of the second sliding body 21 enters the concave portion 28 by the urging force of the spring 22, and the wall surface 30 of the main body 23 comes into contact with the side surface of the lid 3 as shown in FIGS. This sound confirms the correct overlapping of the engagement pieces 4 and 5, and the user stops the rotation of the lid 3 and starts cooking. The side surface of the main body 23 faces the depression 29 of the concave portion 28, and the gap formed by the depression 29
It prevents sticking of the concave portion 28 of the main body 23 to the side surface.

When the internal pressure rises due to heating, the lock pin 12 rises and enters the hole 26 of the lock bar 25 while lifting the display pin 13. In this state, even if the lever 24 is operated to the right in FIG.
Does not move. Of course, even if the cover 3 is to be turned in the returning direction, the cover 3 does not turn because both sides of the concave portion 28 and the main body 23 are in contact with each other. When the cooking is completed and the pressure in the container 2 is reduced, the lock pin 12 and the display pin 13 fall under their own weight, and notify the user that there is no residual pressure. When the user pulls the lever 24 outward, the lock pin 12 does not catch on the hole 26 of the lock bar 25, the second sliding body 21 moves outward in the radial direction, and the tip of the main body 23 comes out of the recess 28. Since the cover 3 comes out and the cover 3 can be rotated, the cover 3 is turned by a predetermined amount, and the engaging pieces 4 and 5 are brought into the state of FIG. At this time, the first sliding body 20 enters the state shown in FIG. 11 and pushes the packing 6. Thus, even when the lid 3 is removed, the food inside does not blow out.

[0019]

According to the present invention, the pressure cooker can be used safely because the pressure-up prevention mechanism at the time of incomplete fitting and the lid-opening prevention mechanism at the time of residual pressure act sequentially with the rotation of the lid. When the lid is completely closed, it is possible to confirm by sound, and since the sticking of the display pin by boiling is prevented, the user can easily confirm the start and end of cooking.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of an example of the present invention.

FIG. 2 is a view showing an engagement piece of a container and a lid.

FIG. 3 is a view showing a state in which a lock pin is lowered.

FIG. 4 is a diagram showing a state in which a lock pin is raised by an internal pressure.

FIG. 5 is a plan view showing an example of a display pin.

FIG. 6 is a plan view showing another example of the display pin.

FIG. 7 is a plan view showing another example of the display pin.

FIG. 8 is a plan view of a lid.

FIG. 9 is a diagram showing a handle for holding a sliding body.

FIG. 10 is a plan view showing first and second sliding bodies.

FIG. 11 is a diagram showing a relationship between a first sliding body and packing.

FIG. 12 is a plan view of a second sliding body.

FIG. 13 is a plan view showing the relationship between the main body of the second sliding body and the recess of the engaging piece of the container.

FIG. 14 is a side view showing the relationship between the main body and the lid.

[Explanation of symbols]

 2 container 3 lid 4, 5 engaging piece 6 packing 8 handle 11 lock valve 12 lock pin 13 display pin 15 gap 20 first sliding body 21 second sliding body 23 main body 24 lever 25 lock bar 28 recess

Claims (4)

(57) [Claims] 1. A plurality of spaced-apart engaging pieces provided on a peripheral edge of an opening of a container are overlapped with a plurality of spaced-apart engaging pieces provided on a peripheral edge of a lid, and are disposed inside a side wall of the lid. in the pressure cooker to seal both the packing, the second having received the urging force of the first sliding body and a second spring which has received the urging force of the first spring in the handle fixed to the lid
A sliding body is provided, the first and second sliding bodies are individually movable in and out of the container in the radial direction by contacting the engaging piece of the container , and the engaging piece of the container is provided with the lid. On the engagement piece of the body
Overlapping not the first time of non-engagement of the two engaging pieces
A sliding body pushes the packing inward, and an engagement piece of the container
Wherein upon engagement of both engaging pieces but overlapping the engaging piece of the lid
The second sliding member makes independent movement with respect to the first sliding member;
A pressure cooker in which a sliding body is engaged with a lock pin of a lock valve fixed to the lid. 2. The control device according to claim 2, wherein the second slide has an operation lever protruding from an outer surface of the handle, and when the lock pin is not engaged with the second slide, the operation lever is moved to the second slide. 2. The pressure cooker according to claim 1, wherein the sliding body is movable radially outward. 3. have at least one recess of the engaging pieces of the condition, the pressure of claim 1, part of the time of engagement of the two engaging pieces the second sliding body abuts the recess Cooking device. 4. The handle has a display pin hole, and a display pin interlocking with the lock pin is disposed in the hole so as to be vertically movable, and there is a gap between the display pin and the display pin hole. 2. A pressure cooker according to claim 1, wherein said display pin is prevented from sticking to said handle by boiling water.