JPS5817527Y2 - Pressure cooker - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an improvement in a pressure cooker, and more specifically, to a pressure cooker in which the rotary sealing operation between the pot body and the lid can be performed stably and smoothly.

In general, in a fitted pressure cooker, the periphery of the pot body, the lid,
By providing a plurality of claws that engage with each other at regular intervals on the inner periphery, placing the lid so that the winter melon on the lid corresponds to the recess between each claw of the pot, and rotating the lid. The claws of the winter clothes are doubled from the bottom of each pot's claws to seal the inside of the pot.

However, in conventional pressure cookers, multiple sets of claws of a predetermined thickness are engaged simultaneously, so when the lid handle is rotated, the pressure of the hand often causes the lid to tilt and the claws collide with each other. Problems were encountered, such as preventing smooth rotation and sealing operation and making the locking operation of the claws unstable, and urgent improvements were requested.

This invention was devised in view of the problems of conventional pressure cookers, and its purpose is to create a pressure cooker that can always perform smooth and stable sealing operations and reliably seal the inside of the cooker. Our goal is to provide the following.

An object of the present invention is to provide a plurality of sets of mutually engaging claws formed on the pot body and the lid of a pressure cooker; and a second claw group that starts engagement following the engagement of the claw groups, and collides with the engagement starting surface of one or both of the first claw groups so that mutual engagement can be performed smoothly. This is accomplished by using a pressure cooker with a preventive notch.

The present invention will be described in detail below with reference to the accompanying drawings.

In the figure, 1 is the pot body, 2 is the pot handle, 3 is the lid, 4 is the lid handle, and 5, 15, 25.35 are four pieces of the same shape protruding from the lower inner periphery of the lid 3 at regular intervals. The claws 6 are recesses formed between the winter melons, and the claws 7 and 17 are of the same shape and are formed protruding from the outer periphery of the upper end of the pot body 1 at equal intervals for initial rotational engagement. Notches 7' and 17' are formed on the lower surface side of one end edge of 7 and 17, respectively, and the inclined surfaces of the notches 7' and 17' allow the claws 5 and
25 can be engaged smoothly.

Reference numeral 8.18 denotes a secondary retaining claw of the same shape that is formed protrudingly between the claws 7 and 17 on the outer peripheral edge of the pot body 1;
One edge 8', 18' of 18 and the notch 7 of the claw 7, 17
The length in the circumferential direction of the recess 9 formed between the edges 7" and 17' is larger than the length in the circumferential direction of the claws 5, 25 of the lid 3, and the other edge 7" of the claws 7, 17, 17'' and the other end edges 8'' and 18'' of the claws 8 and 18, respectively.

To open and close the lid in this configuration, first open and close the lid 3.
is placed over the pot body 1 in the state shown in FIG.
The distance between the ends 15' and 35' of the claws 7 and 17 is the distance between the notches 7' and 17' side ends of the claws 7 and the corresponding claws 5 and 17, respectively.
The distance between the end portions 5' and 25' of 5 is sufficiently larger than that between the end portions 5' and 25'.

Now, when the lid handle 4 is rotated in the direction of arrow X from this state, the first group of claws, that is, the claws 5 and 7 and the claws 25 and 17, start to engage. Since the notches 7' and 17' are formed on the lower edge of the end, the engagement starts extremely smoothly, thereby stably attaching the upper end of the pot body 1 to the backing 10 fitted to the inner peripheral edge of the lid 3. can be brought into contact.

When the lid handle 4 is further rotated, the second claw group, that is, the claw 1
5 and the pawl 8 and the pawl 35 and the pawl 18 start to fit together smoothly without causing any collision between the pawls or malfunction of the lid, and then the lid handle 4 is brought to a position where it overlaps the pot handle 2. By rotating it, the locking is completed and the inside of the pot can be kept in an airtight state.

On the other hand, to remove the lid 3, the lid 3 can be easily disengaged from the pot body by rotating the lid 3 counterclockwise from the fully engaged position.

In the above explanation, one of the first claw groups, that is, the claw 7 of the pot body,
Although an example in which a notch for promoting engagement is provided in the claws 7 and 17 has been described, of course, instead of providing the notches in the claws 7 and 17, for example, the claws 15 and 25 of the lid 3
They may be provided on the upper edge of the end, or they may be merged.

Further, in the above-described embodiment, an example in which the second group of claws are engaged simultaneously has been described, but it goes without saying that the second group of claws itself can be formed to be engaged in a staggered manner if necessary.

As mentioned above, the pressure cooker of the present invention has the locking claws provided on the pot body and the lid so that they can be engaged at different times, and also has a locking promotion notch formed in one or both of the initial locking claws. This has the advantage that the rotational sealing operation of the pressure cooker can always be performed smoothly, stably, and reliably.

[Brief explanation of the drawing]

The drawings illustrate the present invention: Fig. 1 is a radial partial cross-sectional view of the pressure cooker, Fig. 2 is a bottom view of the lid, Fig. 3 is a top view of the pot body, and Fig. 4 is a lid 4 with a steel plate. FIG. 5 is a partial schematic diagram showing a state in which the claw group of FIG. 1 starts to be engaged. 1: Pot body, 3: Lid, 5, 15, 25, 35: Lid claw, 7, 17, 8° 18: Pot body claw, 5, 17 or 25
, 17: First group of claws (for initial retention).

Claims (1)

[Scope of utility model registration request] Three or more pairs of claws that engage each other are provided at a predetermined interval on the periphery of the pot body and the inner periphery of the lid, and by rotating the lid, both claws are engaged and the inside of the pot is sealed. In the pressure cooker, the three or more sets of claws include a first claw group that starts to engage with each other at the beginning of rotation of the lid, and a remaining claw group that starts to engage with each other later than the first claw group. A pressure cooker comprising: a collision prevention notch formed in one or both of the first claw groups.