JPS5819287B2 - Lid locking device for pressure cooker - Google Patents

Description

[Detailed Description of the Invention] A conventional pressure cooker has a spring and a bearing plate fixed to the central part of the convex side of a lid plate which is curved so that it can be dropped into the body of the cooker, and to which a pressure adjustment device is attached. , a support rod that hangs over the rim of the pot body is inserted into the above-mentioned bearing plate so that it can be raised and lowered;
The tip of the bundle is pivoted on the bearing plate so as to rotate eccentrically while contacting the upper side of the support rod, and when the bundle is folded to one side, the peripheral edge of the lid plate Some pressure cookers use a lid that is tightly tightened to a locking edge provided on the rim of the main body, and is released when the bundle is pushed to the other side. When opening the lid after pressure cooking,
There is no problem if you raise the small lever on the pressure regulator to lower the pressure inside the pot while letting the steam escape, and then open the lid after all the steam has gone out and the pressure has dropped to a safe value. If the lid is opened while the pot is being removed, or if the lid is opened without confirming that the pressure inside the pot has dropped to a safe value, the contents may spray out due to the residual pressure, resulting in burns to the cook etc. There is a risk of causing accidents such as

By the way, to confirm that the steam inside the pot has escaped in the conventional pressure cooker mentioned above, try shaking the pressure regulator with chopsticks, etc., and check whether steam comes out or if you can hear the sound of steam coming out. The problem was that the method of checking was incomplete, and it was impossible to know for sure when to open the lid.

The present invention aims to solve the above-mentioned drawbacks and provide a pressure cooker with a high degree of safety by configuring a bundle for opening and closing the lid of the pressure cooker to be locked in conjunction with the pressure inside the cooker. It is something to do.

The present invention will be described in detail below with reference to the drawings. Reference numeral 1 denotes a pressure cooker main body, and a locking edge 2 on the circular mouth edge thereof bends inward to lock the peripheral edge of the lid. is provided.

3 is a pressure cooker body 1 attached to a plate material having a diameter that matches the locking edge 2.
The lid plate is bent in such a way that it can be dropped while tilting inward. 4 is a leaf spring whose center part is fixed to the central part of the convex side of the lid plate 3, and both ends thereof are curved to the extent that the lid plate 3 is bent. It is shaped so that it curves in the opposite direction.

Reference numeral 5 denotes a bearing plate that is fixed upright in parallel to the center of the plate spring 4, and 6 is a support rod that hangs over the rim of the pot body 1, with a through hole bored in its center. 7, it is fitted into the shaft bearing plate 5 so as to be movable up and down.

It is supported at both ends of the leaf spring 4.

Reference numeral 8 denotes a bundle, the tip end 9 of which is eccentrically mounted between the upper ends of the bearing plate 5, and the tip end 9 is connected from the long diameter part 9A to the short diameter part 9B.
The end edge thereof is rotated while touching the upper side of the support rod 6.

Reference numeral 10 designates an engaging portion that is integrally formed from one side of the bundle 8 so as to be parallel to the tip end 9, and has an engaging hole 11 formed therein.

Reference numeral 12 denotes a piston attached to the lid plate 3, which is supported by a support fitting 13 so as to be able to rise and fall freely, and is pushed out so as to fit into the engagement hole 11 provided in the engagement part 10 in response to the pressure inside the pot body 1. .

The end of the piston 12 that fits into the engagement hole 11 is colored red to attract attention.

Reference numeral 14 denotes a pressure regulating device added to another position on the cover plate 3. When a small lever 15 attached to the upper end of the device is raised, a built-in valve is opened, and pressure is released from a group of small holes provided on the side. It is configured to discharge steam within the pot body 1.

Reference numeral 16 is a safety device installed at another position on the lid plate 3, which prevents the pressure regulator 14 from clogging with the contents being cooked and malfunctions, causing the pressure inside the pot body 1 to become abnormally high. When the cover plate 3 is removed, the cover plate 3 is removed and the steam is released.

Next, the operation of the locking device in the pressure cooker constructed as described above will be explained. After putting cooking ingredients into the pot body 1, the lid plate 3 is tilted and dropped into the pot body 1, and the support rod 6 is hung on the rim of the pot body 1, and the bundle 8 is rotated 180 degrees from the sagging position shown in the third figure, and folded down to the position shown in the first figure.

Then, the long diameter portion 9A of the tip edge of the bundle 8 presses the support rod 6, causing the plate spring 4 to bend, and due to the pressure, the peripheral edge of the lid plate 3 is tightly tightened to the locking edge 2, and the pot is closed. The inside of the main body 1 is sealed.

In this state, if you heat the pot body 1 and pressure cook it,
The pressure inside the pot body 1 increases, and in response to the pressure, the piston 12 is pushed out to a position where it fits into the engagement hole 11 as shown by the dotted line in FIG. 4, thereby locking the bundle 8.

When pressure cooking is finished and you want to open the lid, press pressure regulator 1.
4, the small lever 15 is raised to lower the pressure inside the pot body 1 while discharging steam.

Then, while there is residual pressure inside the pot body 1, the piston 1
2 is held in a state where it is fitted into the engagement hole 11.

Since the bundle 8 is in a locked state, the lid cannot be opened.

When the residual pressure inside the pot body 1 disappears and the pressure drops to such a level that the contents do not blow out even when the lid is opened, the piston 12 descends to its original position under its own weight and is disengaged from the engagement hole 11. The scolded state of bundle 8 is released.

Therefore, when the bundle 8 is rotated to the opposite side, the short diameter portion 9B of the tip edge comes into contact with the support rod 6, so that the support rod 6
When the pressure is released, the leaf spring 4 returns to its original position, and the peripheral edge of the lid plate 3 separates from the locking edge 2, allowing the lid to be opened.

5 In the present invention, the lid can be inserted into the pot body from the mouth edge of the pot body, such as one in which the lid is formed into an oval shape that can be dropped into the pot body from the mouth edge of the pot body, where one edge is formed into an oval shape. It can be molded into various shapes that can be dropped into.

Moreover, the engaging part 1 having the retaining hole 11 shown in the above embodiment
0 and the shape and structure of the piston 12 can be changed as appropriate.

Since the present invention is configured in a diagonal manner, the bundle is held in a locked state while the steam is not completely released from the inside of the pot body after pressure cooking and there is residual pressure, and the steam is not completely released. Even if you try to open the lid without checking that there is no
This prevents the contents from accidentally spilling out because the container cannot be opened.

Once the steam has completely escaped and the residual pressure has disappeared, and the pressure inside the pot body has dropped to a safe value, the piston will easily come out of the engagement hole due to its own weight or by pushing with chopsticks, so even if you open the lid. You can confirm that it is safe and can open the lid with confidence.

Therefore, there is no mistake in opening the lid, there are no accidents such as burns caused by mistakes in opening the lid, and there are various effects such as being able to provide a pressure cooker with a high degree of safety.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention; FIG. 1 is a perspective view, FIG. 2 is a top view, FIG. 3 is a side view, and FIG. 4 is a partially sectional view. 1... Pressure cooker body, 2... Locking edge, 3
...Lid plate. 4... Leaf spring, 5... Bearing plate, 6...
...Support rod, 8...Bundle, 9...
... Bundle tip, 10... Engagement part, 11
・・・・・・Engagement hole, 12・Curve・Piston. 14...Pressure adjustment device.

Claims (1)

[Claims] 1. A spring and a bearing plate are fixed to the central part of the convex side of a lid plate which is formed so as to be dropped into the pressure cooker body and has a pressure regulating device attached thereto. A supporting rod for passing is inserted into the bearing plate so as to be able to rise and fall freely, and is supported by the spring, and the tip of the bundle is pivotally attached to the bearing plate so as to rotate eccentrically while contacting the upper side of the supporting rod, When this bundle is folded to one side, the peripheral edge of the cover plate is tightly tightened to the locking edge provided on the mouth edge of the pressure body, and when the bundle is folded to the other side, the tightening is released. In the lid of the pressure cooker, the bundle is provided with an engaging part having an engaging hole, and the lid plate is folded to one side and the peripheral edge of the lid plate is tightened. A locking device for a lid in a pressure cooker, characterized in that a piston is attached that is pushed out to fit into the engagement hole in response to the pressure of the pressure cooker.