JPH0242485B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a pressure cooker that can be easily removed after cooking, easily disassembled, and cleaned of dirt.

Conventionally, the structure for fitting the pot and the pressure lid is a bayonet type fitting structure, which requires regulation of the fitting position, has a complicated structure, and has the drawback that cleaning of dirt after cooking is troublesome.

The present invention eliminates the conventional drawbacks, and the tightening device for tightening the pot and pressure lid is simple in structure, easy to attach and detach,
It is an object of the present invention to provide a pressure cooker that is easy to disassemble and clean.

The present invention will be explained based on the drawings.

Fig. 1 is a sectional view of a pressure jar rice cooker showing an embodiment of the present invention, Fig. 2 is a sectional view of the pressure regulator shown in Fig. 1, and Figs. Fig. 6 is a local plan view showing the movement of the guide ring and fixing fitting, Fig. 7 is a sectional view showing the movement range of the fixing fitting, Fig. 8 9 is a sectional view showing a state in which the pressure lid and the upper end of the fixing fitting are in contact with each other, and FIG. 9 is a sectional view showing a state in which the fixing fitting is fitted to the pressure lid and the pot.

In the figure, reference numeral 1 denotes a rice cooking heater in which a heater 1a is cast, and a through hole is provided in the center. Reference numeral 2 denotes a protective frame, which has a through hole in the center of the bottom, a rice cooking heater 1 attached to the inner bottom, and a heat retaining heater 3 for keeping warm at the outer upper part. Reference numeral 4 denotes a center thermostat incorporating a magnet 4a, which is fixed to a through hole in the center of the rice cooker heater 1 and housed in a heat sensitive case 5 that passes through a through hole in the protective frame 2. 6 is a switch lever that is linked to the center thermostat, and a rice cooking button 7 is inserted into the tip. Reference numeral 8 denotes a micro switch, which opens and closes an electric contact portion by the movement of a switch lever 6. Reference numeral 9 denotes an upper frame made of a ring-shaped resin material with a hook part and a hinge part integrally molded on the other side, a protective frame 2 is attached to the upper part of the inner periphery, and a body 10 constituting the outer shell of the main body is fitted to the lower part of the outer periphery. I am making it match. 11 is an insulating material that prevents heat radiation during cooking and keeping rice warm, increasing thermal efficiency. 12 is a display board on which a switch lever 6 and a micro switch 8 are attached. 13 and 14 are a cord reel and legs attached to the lower surface of the body 10. Reference numeral 15 denotes an outer lid made of a resin material with a handle part integrally molded, a support part that fits into the hinge part of the upper frame 9 is pivotally supported by a hinge shaft 6, and a hook lever 18 with a hook button 17 fixed to the other end is attached. It fits into the hook portion of the upper mounting frame 9 to lock the entire lid. 19 is an outer lid cover that thermally protects the lower side of the outer lid, and a fifth
As shown in the figure, a fitting recess 19a is provided. 2
0 is a heat dissipation plate that constitutes the lower surface of the lid body, and a lid heater 21 for heat insulation is attached to the upper surface with double-sided tape.
The holder gasket 22 is inserted into the through hole in the center, and is attached to the outer lid cover 19 via the heat radiation gasket 23 so that the holder gasket 22 is sandwiched between the outer lid 15 and the heat sink 20 and prevented from coming off. Reference numeral 24 denotes a pot removably placed on the rice cooking heater 1, and a hook portion 24a is formed by bending the entire outer circumference of the outer peripheral edge portion of the upper end downward. Reference numeral 25 designates a pressure lid that airtightly covers the upper opening of the pot 24 via a pot gasket 26, and has a hook portion 25a formed by bending the entire outer periphery of the lower end upward, as shown in FIG. A nozzle 27 is attached to the top surface, and a pressure adjustment weight 28 is detachably set at the tip of the nozzle 27 to adjust the pressure inside the pot 24. Also, nozzle 27
A safety device 29, which is a second pressure regulator, is attached to the center of the pressure lid 25 to prevent the internal pressure from rising abnormally if the pressure regulating weight 28 does not operate due to clogging or the like. As shown in FIG. 1, the upper end of the safety device 29 has a hook portion 29a with an inverted convex cross section that removably engages with the holder gasket 22, and the lower end also has a hook portion 29b similar to the upper end. ing. 3
0 is an inner lid, and a pressure lid 25 is provided with several small holes to prevent ``sticky'' etc. from blowing out from the nozzle 27.
The inner lid gasket 31, which is provided on the lower surface and removably fits into the hook portion 29b at the lower end of the safety device 29, is attached to the through hole in the center, and the outer peripheral wall is attached to the pot gasket 2.
6 is supported.

As shown in FIG. 7, reference numeral 32 denotes a fixing fitting which is a ring-shaped fitting with a lip-groove cross section and is divided into six equal parts according to the present invention. As shown in FIG. 3, a sliding shaft 33 is fixedly protruding from the upper and lower surfaces, and an opening 32c is provided in the center of the side surface. 3
Reference numeral 4 denotes a ring-shaped guide ring, and a guide plate 34a is inserted into the opening 32c of the fixing fitting 32 on the inner surface.
A lever 34b having one pressure knob 35 attached to the tip is fixed to the outer surface. 36 is a ring-shaped storage case with an L-shaped cross section, and the fixing metal fitting 3
2. A long hole 36a for housing the guide ring 34, on which the sliding shaft 33 of the fixing fitting 32 slides is provided at the bottom, inclined toward the center, and a fitting recess 36 at the upper end of the side part.
b, and a fitting protrusion 36c is provided on the outer surface. As shown in FIG. 4, numeral 37 is a ring-shaped storage cover with an inverted L-shaped cross section that fits into the upper part of the storage case 36, and has an elongated hole 37a on the top surface in the same shape as the elongated hole 36a of the storage case 36 and at a position opposite to it. sliding shaft 33
is inserted, a fitting protrusion 37b is provided at the outer lower end, and the fitting protrusion 37b is inserted into the fitting recess 3 of the storage case 36.
6b to form a metal fitting sliding device 38. The fitting protrusion 36C of the storage case 36 of the metal fitting sliding device 38 is fitted into the fitting recess 19a of the outer lid cover 19 to be detachably attached to the lid.

Next, the movement and function of the metal fitting sliding device 38 of the present invention will be explained.

As shown in FIG. 6, when the pressure knob 35 is moved in the closing direction, the guide plate 34 of the guide ring 34
a guides the fixing metal fitting 32, and the sliding shaft 33 of the fixing metal fitting 32 forms elongated holes 36a and 37a, which are inclined toward the center, and which are provided on both sides of the storage case 36 and the storage cover 37.
along the lower surface of the hook 24a of the pot 24 and the pressure lid 2.
The seventh part that fits with the edge of the upper surface of the hook part 25a of No. 5
The fixture 32 slides to the position indicated by the two-dot chain line in the figure. Conversely, when the pressure knob 35 is moved in the opening direction, the fixing metal fitting 32 moves outward and comes off from the edges of the pot 24 and the pressure lid 25, so the pressure knob 3
The pot 24 and pressure lid 25 constituting the pressure cooker can be easily attached and detached by only the operation in step 5.

Next, the operation of the pressure cooker of the present invention will be explained.

As shown in Fig. 1, when the rice cooking button 7 is pressed, the magnet 4a in the center thermostat 4 is attracted to the ferrite in conjunction with the upward movement of the switch lever 6, and the micro switch 8 is turned on, and the rice cooking heater 1 is energized. Cooking will begin. The temperature inside the pot 24 rises, and the pot gasket 26 closes the pot 24 and the pressure lid 2.
When the temperature of the pot 24 rises to 100°C or more, the entire pressure lid 25 moves upward, and the upper surface of the outer edge of the pressure lid 25 and the hook part 3 at the upper end of the fixing fitting 32 are pressed together.
2a and push up the fixture 32, and the hook portion 32b at the lower end of the fixture 32 and the lower surface of the outer edge of the pot 24 contact and fit together. At this time, each hook part 24a, 25a, 32a, 32b is
They are tightly fitted to withstand internal pressure.

When the internal pressure of the pot 24 reaches the set pressure of the pressure adjusting weight 28, the pressure adjusting weight 28 is pushed up by the internal pressure and steam is released from the nozzle 27, thereby keeping the internal pressure constant and cooking rice.

When rice cooking is complete, the temperature at the bottom of the pot 24 rises, the magnet 4a in the center thermometer 4 moves away from the ferrite, the switch lever 6 moves downward, and in conjunction with this movement, the micro switch 8 turns OFF, and the heat retention heater 3 , the electricity is switched to the lid heater 21 to keep it warm.

With the above configuration, the present invention allows the outer edge of the pressure cooker and the pot constituting the pressure cooker to be removably fitted to the fixing fitting, and also enables the fitting sliding device that houses the fixing fitting to be detachably attached. can. Therefore, the sticky substance that spills out from inside the pot flows into the metal fitting sliding device and causes odor and obstructs the movement of the metal fitting sliding device, but it can be removed and the sticky substance etc. washed away. It produces effects such as being hygienic and stable in terms of quality.

[Brief explanation of drawings]

Fig. 1 is a sectional view of a pressure jar rice cooker showing an embodiment of the present invention, Fig. 2 is a sectional view of the main parts thereof, and Fig. 3 is a guide ring attached to the storage case at the bottom of the metal fitting sliding device of the present invention. FIG. 4 is a perspective view showing the procedure for storing the fixing metal fittings, FIG. 4 is a perspective view showing the state in which the storage case in which the parts shown in FIG. 3 are assembled and stored is fitted with the storage cover, and FIG. Fig. 6 is a partial plan view showing the movement of the guide ring and the fixing fitting, Fig. 7 is a sectional view showing the movement range of the fixing fitting, and Fig. 8 is the pressure cover. A cross-sectional view showing a state in which the upper end of the fixing fitting and the upper end of the fixing fitting are in contact with each other, No. 9
The figure shows a sectional view showing a pressure lid and a fixing fitting fitted to a pot. 1: Rice cooking heater, 2: Protective frame, 3: Heat retention heater, 4: Center thermo, 6: Switch lever,
8: Micro switch, 15: Outer lid, 19: Outer lid cover, 20: Heat radiation plate, 24: Pot, 24a: Hook on pot edge, 25: Pressure lid, 25a: Hook on pressure lid edge, 28 : Pressure adjustment weight, 32: Fixing metal fitting, 32a: Hook part at upper end of fixing fitting, 32b:
Hook part of fixing fitting, 32c: Opening part of fixing fitting, 33: Sliding shaft, 34: Guide ring, 34
a: Guide plate, 34b: Lever, 35: Pressure knob, 36: Lower storage case, 36a: Long hole of storage case, 36b: Fitting recess of storage case, 36
c: Fitting protrusion of storage case, 37: Storage cover, 37a: Long hole of storage cover, 37b: Fitting protrusion of storage cover, 38: Metal fitting sliding device.

Claims (1)

[Claims] 1. A split fixture with a circular arc shape and a U-shaped cross section is formed to removably fit into the outer edges of the pot and pressure lid that constitute the pressure cooker, and this fixture has a sliding shaft protruding from its upper and lower surfaces. The fixing fitting is arranged on the inner periphery of a ring-shaped guide ring which has a guide plate on the inner surface to be inserted into the opening provided on the outer peripheral side of the fixing fitting and has an operating lever on the outer surface. A ring-shaped storage cover and a storage case are provided, which are vertically separable for storing metal fittings and a guide ring, and a long hole inclined toward the center is provided on the upper surface of the storage cover and the lower surface of the storage case, and the fixed metal fitting is inserted into the long hole. The sliding shaft of the pressure cooker is inserted to form a fitting sliding device, and the storage case is provided with a fitting protrusion 36c, the outer lid of the pressure cooker is provided with a fitting recess 19a, and the fitting protrusion is provided with a fitting protrusion 36c. A pressure cooker characterized in that a fitting sliding device is fitted in the fitting recess so as to be attachable and detachable.