JPS6130575Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a locking device for a pressure cooker in which a pot body and a lid body are fitted together at their peripheries, and the inside is kept airtight by a gasket.

In order to ensure safety during boiling and to prevent danger from steam after boiling, this type of pressure cooker has a lid that is difficult to remove until the pressure difference between the inside and outside of the pot becomes small. A locking device is provided.

This idea involves pushing a part of the operating member provided in the handle on the lid side into a recess provided in the handle on the pot body side using spring pressure, and returning the operating member by steam pressure. It concerns a locking device blocked by a stop pin. Such a locking device is already known from Utility Model Application No. 58-77617, but the locking device disclosed therein is
Since the operating rod is pivoted to the handle on the lid side, installation is time-consuming, and the supporting shaft may become loose due to thermal expansion, making it easy for the operating lever to move forward and backward without smoothness. It has its drawbacks.

This invention was devised to eliminate the drawbacks of the conventional structure described above, and its purpose is to allow the operating member to be attached to the handle on the lid side without using a means such as pivoting, and to allow rotation of the lid. To provide a locking device for a pressure cooker having a new structure in which the operating member can be locked to a guide member against a spring member by having an engaging element protruding from the inside of the lower surface of the operating member for prevention. be.

The characteristics of this invention for the above purpose are that the handle on the lid body side is composed of a box-shaped guide member whose lower part is open except for the handle member and the area around the opening on the side thereof, and a finger hook member protruding from the upper surface. At the same time, the operating member is formed of a block having the same cross-sectional shape as the guide member, and the above-mentioned engager is provided protrudingly from the inside of the lower surface, and the operating member inside the guide member held around the opening by the engager is held by the spring. It is engaged with the guide member against the member.

This invention will be explained in detail below using illustrated examples.

In the figure, 1 is the pot body, 2 is the lid body, 3 is the handle on the pot body side,
4 is a handle on the lid body side.

On the periphery of the pot body 1 and the lid body 2, as shown in FIG. A gasket 7 is fitted to keep the inside of the pot airtight.

The handle 3 is composed of a mounting piece 3a projecting from the upper side of the pot body 1, and a synthetic resin knob member 3b fitted and screwed to the tip of the mounting piece 3a, and the knob member 3b An engaging recess 9 facing a horizontal groove 8 on the mounting piece 3a formed between the side portion of the pot body and the knob member 3b is provided on the inside of the pot body.

A valve seat 11 through which a stop pin 10 made of a light metal such as aluminum is inserted extends through the peripheral edge of the lid body 2. Both ends of this stop pin 10 are formed into flanges, and the lower flange 1
A seat valve 10b is provided above 0a,
If there is a difference in pressure between the inside and outside of the pot, the stop pin 10
increases due to vapor pressure.

The handle 4 includes a synthetic resin handle member 4a, a box-shaped guide member 12 provided on the side of the handle member 4a,
It is composed of a handle member 4a and a finger hook member 13 projecting over the upper surface of the guide member 12, and the lower surface of the guide member 12 is open leaving an opening periphery 12a. The handle 4 is attached to the peripheral edge of the lid 2 so that the upper end of the stop pin 10 is located in a hole 12b formed at the front of the guide member 12.

14 is an operating member made of synthetic resin, which is formed by a block having the same cross-sectional shape as the guide member 12;
An engaging element 15 is provided protruding from the inner side of the lower surface. A lock bar 16 of a required length is protruded from the upper part of the inner side. Furthermore, there is a horizontal hole 17 inside the operating member 14.
A spring member 18 and a spring receiving member 19 pushed in from the side of the guide member are located in this horizontal hole 17, and after the operating member 14 is fitted into the guide member 12, it is always pressed outward. It is becoming possible to do so.

The operating member 14 is fitted into the guide member 12 from the inner opening before the handle 4 is attached to the lid 2. Further, the spring member 18 of the horizontal hole 17 is pushed into the horizontal hole 17 from the side of the guide member and is locked to the spring receiving member 19 fixed to the guide member side. Thereafter, the handle 4 is attached to a predetermined position on the peripheral edge of the lid, and the stop pin 10 is positioned below the hole 12b at the front. As a result, the tip of the lock bar 16 is positioned above the stop pin 10.

Note that the spring member 18 may be attached in other structures, and is not particularly limited to the illustrated example.

Next, to explain the operation, in order to fit the pot body 1 and the lid body 2, the lid body 2 is rotated from a predetermined position along the periphery of the pan body 1, and as shown in FIG. When the handles are overlapped, the engager 1 that has moved along the lateral groove 8 along the inner edge of the handle member 3 as shown in FIG.
5 is inserted into the recess 9 of the handle 3 by the pressure of the spring member 18, as shown in FIG. Therefore, even if an attempt is made to rotate the lid body 2 in the original direction in this state, the engaging element 15 comes into contact with the side surface of the recess 9, and as shown in FIG.
The lid body 2 cannot be rotated unless it is removed from the recess 9.

Even in such a case, if the pressure inside the pot becomes higher than the outside air due to steam pressure, and the stop pin 10 rises as shown in FIG. 2 and protrudes beyond the lock bar 16, then Operation member 1
4 with a fingertip, the tip of the lock bar 16 comes into contact with the side surface of the stop pin 10 and does not move, making it impossible to push in the operating member 14 and remove the engager 15 from the recess 9.

Therefore, the operating member 14 can only be pushed in when the stop pin 10 is located below and does not obstruct the lock bar 16.

As mentioned above, this invention is based on a box-shaped guide member 1 whose lower surface is open except for the opening periphery on the handle 4 of the lid body 2.
2, an operating member 14 having the same cross-sectional shape as the guide member 12 is fitted therein, the operating member 14 is held around the opening, and an engager 15 is provided protruding from the inner side of the lower surface of the operating member 14. Spring member 1
Since the operating member 14, which is always pressed outward by 8, is locked to the guide member 12, it is easier to attach the operating member than when the operating member is pivoted together with a spring member on the guide member side. In addition, since the operating member is simply fitted into the guide member, it will not loosen due to thermal expansion, and the operating member will not move smoothly even after long-term use. . Moreover, since it is sufficient to press the operating member itself, there is no need to provide any other special operating elements.

[Brief explanation of the drawing]

The drawings illustrate a locking device for a pressure cooker according to this invention, and Fig. 1 is a perspective view of the handle portion, and Fig. 2 is a perspective view of the handle.
3 is a longitudinal sectional side view of the main part when the lid is locked, FIG. 3 is a longitudinal sectional side view of the main part when the lid is unlocked, and FIG. 4 is a schematic cross-sectional plan view showing the moving state of the engaging element. 1... Pot body, 2... Lid body, 3, 4... Handle, 8
... Horizontal groove, 9 ... Recess, 10 ... Stop pin,
12... Guide member, 12a... Opening circumference, 13...
Handle member, 14... Operating member, 15... Engagement element,
16...Lock bar.

Claims (1)

[Scope of utility model registration request] Projections that fit into each other are provided on the peripheries of the pot body and the lid body, a handle having a horizontal groove and a recess for engagement is provided on the upper side of the pot body, and a handle attachment part of the lid body is provided with a A lock in which a stop pin that moves up and down is inserted through the handle, and an operating member is provided with an engaging element located in the recess located in the recess on the lid side and a lock bar located on the stop pin, and a spring member is applied to move the operating member forward and backward. In the device, the handle on the lid body side is composed of a box-shaped guide member whose lower part is open except for the handle member and the vicinity of the opening on the side thereof, and a finger hook member protruding from the upper surface, and an operating member. It is formed of a block having the same cross-sectional shape as the guide member, and has the engager protruding from the inner side of the lower surface, and the engager guides the operating member in the guide member held around the opening by the engager against the spring member. A locking device for a pressure cooker characterized by being locked to a member.