JPS5817534Y2 - pressure cooker safety plug - Google Patents

Description

[Detailed description of the invention] Generally, as shown in FIG. 1, a pressure cooker 1 is provided with a pressure regulating device 3 and a safety valve device 4 on a lid 2. The pressure in the pot 1 can be adjusted by a pressure regulator 3, and when the pressure in the pot 1 rises to the set pressure, steam passes through a relief hole (not shown) in the pressure regulator to the outside air. Nabe 1
The inside of the pot is kept at a constant pressure, so troubles such as the food being boiled clogging the relief hole may occur, and the pot 1
If the pressure inside the pot rises abnormally, a safety device 4 attached to the lid 2 is activated to release the pressure inside the pot 1.This invention concerns this safety device 4. The purpose is to provide an inexpensive safety plug that can be used by being attached to a hole 5 made in a lid 2.

To explain the embodiment with reference to the figures, the safety plug of this invention is as follows:
It consists of a rubber stopper 6 which has an annular groove 7 on its circumferential surface into which the edge of a hole 5 drilled in the lid 2 of the pressure cooker 1 can fit. The leg portion 6a has a smaller diameter than the diameter of the leg portion 6a, and the spring retaining collar 6b has a larger diameter than the leg portion 6a. be.

Since the safety stopper of this invention has the above-described structure, the stopper 6 is pushed into the hole 5 from the inside of the lid 2, and the mouth edge of the hole 5 is fitted into the annular groove 7. If you put it (
(Fig. 2), this safety plug 6 is pushed up by the pressure when the pressure inside the pot 1 approaches a dangerous pressure above a certain pressure, and the annular groove 7 comes off from the mouth edge of the hole 5, but at that time, The rubber stopper 6 is
Since the spring 8 that is fitted into the leg portion 6a and is not removed therefrom is located inside the lid 2, the explosive When the stopper 6 elastically rises, the steam escapes through the gap formed between the stopper 6 and the hole 5. figure).

Therefore, the safety stopper of this invention is safe because the stopper does not pop out explosively when the safety device is activated, and its structure is very simple, so it can be compared with conventionally known safety devices. It can be provided at a very low price.

[Brief explanation of drawings]

Fig. 1 is a partially cutaway side view showing an example of a pressure cooker, Fig. 2 is a vertical sectional side view of the safety plug according to this invention, showing the state before overpressure is applied, and Fig. 3 is a view of the same in the state of relief action. , Figure 4 is I of Figure 2.
It is a sectional view taken along the line V-IV. 1...pressure cooker, 2...lid, 5...
...hole, 6...rubber stopper, 6a...leg, 6b...spring removal stop, 7...
...Annular groove, 8...Spiral spring.

Claims (1)

[Scope of utility model registration request] A leg portion having a diameter smaller than the diameter of the hole and a retaining portion for the spring are formed at the lower part of the rubber stopper, which has an annular groove into which the edge of the hole drilled in the lid of the pressure cooker can fit. A safety plug for a pressure cooker characterized by a spiral spring fitted into the part.