JPS624255Y2 - - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to an improvement of a safety device for a pressure cooker.

Conventional pressure cookers of this type have handles attached to the pot body and pot lid, a gasket attached to the inner periphery of the pot lid, and an engaging claw for engaging the pot lid to the pot body attached to the outer periphery of the pot body. A locking pin is provided corresponding to the inner circumferential edge of the pot lid, and locks into the engagement claw of the pot body to restrict the rotation of the pot lid. The lock pin can be freely retracted from the base end of the handle of the pot lid toward the pot body. A structure that was attached to the was adopted. However, the safety device of a pressure cooker with this structure allows the locking pin to be released even if the pressure inside the pot is high, so there is no need for anyone to use this pressure cooker even though the pressure inside the pot is high. However, there was a high risk of burns from being exposed to high-temperature steam if the lid of the pot was removed by mistake.

The present invention solves the above-mentioned drawbacks of the conventional pressure cooker.It is a pressure cooker that restricts the rotation of the pot lid by preventing the lock pin from being released when the inside of the pot is under high pressure with high-temperature steam. The purpose is to provide safety equipment.

In this invention, engaging claws for engaging the pot lid are provided at a predetermined gap on the outer periphery of the pot body, and a pressure sensitive element that floats due to the pressure inside the pot is provided on the pot lid, and moves as the pressure sensitive element rises. The gist of the present invention is a safety device for a pressure cooker, characterized in that a rotation regulating member is attached to the pressure sensitive element, one end of which locks onto the side of the engaging claw to regulate rotation of the pot lid.

Hereinafter, one embodiment of the present invention will be described based on the drawings.

In the figure, reference numeral 1 denotes engagement claws provided on the pot body 3 to engage the pot lid 2, and the engagement claws 1 are provided on the outer periphery of the pot body 3 at predetermined intervals.
On the other hand, engagement claws 4 are provided on the inner peripheral edge of the pot lid 2 at positions corresponding to the engagement claws 1 of the pot body 3 so that the pot lid 2 can be engaged with the pot body 3.
A gasket 5 is attached to the inner periphery of the pot lid 2 for sealing the inside of the pot when the pot lid 2 is engaged with the pot body 3. A cylindrical guide tube 6 is provided on the top surface of the pot lid 2.
is mounted vertically, and a pressure sensitive element 7, which floats due to the pressure inside the pan, is fitted into the guide tube 6 so as to be freely retractable. The pressure sensitive element 7 has a substantially pincushion shape, and an O-ring 8 is attached to the lower part of the pressure sensitive element 7 for sealing the inside of the pot. The pressure sensitive element 7 is provided with a rotation regulating member 9 that moves upward as the pressure sensitive element 7 rises and locks one end of the member to the side of the engagement claw 1 of the pot body 3 to restrict rotation of the pot lid 2. is installed. The rotation regulating member 9 has a substantially U-shaped cross section, a lower branch 10 is shorter than an upper branch 11, and the upper branch 11 is attached to the upper end of the pressure sensitive element 7. The lower branch 10 of the rotation regulating member 9 is inserted into a notch 12 provided in a part of the periphery of the pot lid 2 so that it can be engaged with the engaging claw 1 of the pot body 3.
The notch 12 may be provided not only in the part where the handle 13 is attached as shown in FIG. 2, but also in a part other than the part where the handle 13 is attached as shown in FIG.

Next, the operation of the present invention will be explained. Materials, water, etc. are put into the pot body 3, the pot lid 2 is completely engaged with the pot body 3, and the pot is heated by heating. As the inside of the pot is heated, the pressure increases, the pressure sensitive element 7 floats up, and the lower branch 10 of the rotation regulating member 9 moves to the height where the engaging claw 1 of the pot body 3 is provided. . In such a state, even if an attempt is made to rotate the pot lid 2, the lower branch 10 of the rotation restricting member 9 is locked to the side of the engaging claw 1 of the pot body 3, and the pot lid 2 cannot be rotated. . When the heating is stopped, the pot is cooled, and the pressure inside the pot becomes equal to the pressure outside, the pressure sensitive element 7 sinks into the guide tube 6, and at the same time, the lower branch 10 of the rotation regulating member 9 collapses into the pot body 3. The engaging claw 1 moves below the height at which it is provided. Therefore, the pot lid can be rotated and removed from the pot body.

As explained above, the present invention combines a pressure sensitive element and a rotation regulating member to form a safety device, so the inside of the pot will not be pressurized under incompletely engaged conditions, and the inside of the pot will not be pressurized under fully engaged conditions. When the pressure cooker is pressurized, the rotation of the pot lid is restricted, and when the pressure is no longer applied, the pot lid can be rotated, which has the effect of allowing the person handling the pressure cooker to use the pressure cooker safely. .

[Brief explanation of the drawing]

Fig. 1 is a perspective view of a pressure cooker equipped with the safety device of the present invention, Fig. 2 is an enlarged view of the main parts of Fig. 1, and Fig. 3 is a partial plan view of the pot lid fully engaged with the pot body. , Figure 4 shows A- in Figure 3 when the inside of the pot is in a no-pressure state.
Figure 5 is a view taken along the line A-A in Figure 3 when the inside of the pot is under pressure, and Figure 6 is a partial plane view when the pot lid is incompletely engaged with the pot body. 7 is a view taken along the line B--B in FIG. 6, and FIG. 8 is a perspective view showing a state in which the rotation regulating member is provided at a location other than the base end of the handle. 1... Engaging claw, 2... Pot lid, 3... Pot body, 7
...Pressure sensitive element, 9... Rotation regulating member.

Claims (1)

[Scope of utility model registration request] Engagement claws for engaging the pot lid provided at predetermined intervals on the outer periphery of the pot body, a pressure sensitive element that moves up and down on the pot lid as pressure changes inside the pot, and rotation that moves up and down together with the pressure sensitive element. and a regulating member, the rotation regulating member moves to a height position of the engagement claw when the pressure sensitive element is protruded to regulate the rotation of the pot lid, and the rotation regulating member moves to a position at the height of the engagement claw when the pressure sensitive element is protruded, and engages when the pressure sensitive element is retracted. A safety device for a pressure cooker, characterized in that it has a lower branch that is removed from the level of the claw.