JP7054772B2 - Pressure type rice cooker - Google Patents

Description

The present disclosure relates to a pressure-type rice cooker, and particularly to a holding portion for holding an inner lid and a pot.

Conventionally, a pressure type rice cooker is provided with a holding portion for holding the inner lid and the pot or the pot case because a pressure of atmospheric pressure or higher is applied to the inner lid and the pot. By rotating the holding portion provided on the inner lid, the inner lid is held and released from the pot or the pot case. As a pressure type rice cooker provided with a holding portion, for example, there is one listed in Patent Document 1.

Patent Document 1 describes a pressure-type rice cooker in which a case for storing a pot and a lid have a double structure. FIG. 2 shows that a holding portion for holding the flange of the inner case for storing the pot and the inner lid is attached to the inner lid.

Japanese Patent No. 3851293

However, if the inner lid of the pressure-type rice cooker is provided with a holding portion, the structure of the inner lid becomes complicated and cleaning of the inner lid becomes troublesome. Since the inner lid of the pressure-type rice cooker is cleaned every time it is used, it is desired that maintenance is easy.

Therefore, an object of the present disclosure is to provide a pressure-type rice cooker having an inner lid that can be easily washed in order to solve the above-mentioned problems.

In order to achieve the above object, the pressure type rice cooker according to one aspect of the present disclosure is
A pot having a bottomed cylindrical pot body and a flange portion extending outward from the upper end of the pot body,
The inner lid that covers the opening of the pot and
The outer lid to which the inner lid can be attached and detached, and the outer lid
A holding portion that holds the outer peripheral portion of the inner lid and the flange portion of the pot, and a holding portion.
It is equipped with a parallel drive mechanism that reciprocally moves the pinched portion back and forth between the release position and the pinch position.
The parallel drive mechanism is mounted inside the outer lid.
At the pinching position, at normal pressure, there is a gap between the lower end of the flange of the pan and the pinching portion and between the upper surface of the outer peripheral portion of the inner lid and the pinching portion in the vertical direction.
At the pinching position, when pressurizing, the lower end of the flange of the pan and the pinching portion come into contact with each other, and the upper surface of the outer peripheral portion of the inner lid and the pinching portion come into contact with each other.

A pressure cooker having an inner lid that is easy to wash can be provided.

It is a perspective view which shows typically the pressure type rice cooker which concerns on embodiment. It is a perspective view which shows typically the pressure type rice cooker which omitted the pot with the top lid open. FIG. 3 is a plan view schematically showing a state in a released position by removing a part on the upper outer shell member side of the outer lid from the pressure type rice cooker of FIG. It is a perspective view which shows typically the pot, the inner lid, the holding part, and the parallel drive mechanism in the release position. It is a partial vertical cross-sectional perspective view around the holding portion at the release position. FIG. 3 is a plan view schematically showing a state in a holding position by removing a part on the upper outer shell member side of the outer lid from the pressure type rice cooker of FIG. It is a perspective view which shows typically the pot, the inner lid, the holding part, and the parallel drive mechanism in the holding position. It is a partial vertical sectional perspective view around the holding portion in a normal pressure state at the holding position. It is a partial vertical sectional perspective view around the holding portion in a pressurized state at the holding position.

According to one aspect of the present disclosure, a pan having a bottomed tubular pan body portion, a pan having a flange portion extending outward from the upper end of the pan body portion, and an inner lid covering the opening of the pan. A parallel movement of the outer lid to which the inner lid can be attached and detached, the holding portion that holds the outer peripheral portion of the inner lid and the flange portion of the pot, and the holding portion so as to reciprocate between the release position and the holding position. The parallel drive mechanism is provided in the outer lid, and the parallel drive mechanism is provided between the lower end of the flange of the pan and the holding portion in the holding position, in the vertical direction at normal pressure, and in the holding portion. There is a gap between the upper surface of the outer peripheral portion of the lid and the pinching portion, and at the pinching position, the lower end of the flange of the pan and the pinching portion come into contact with each other in the vertical direction during pressurization. It is a pressure type rice cooker in which the upper surface of the outer peripheral portion of the lid and the holding portion are in contact with each other.

Further, the parallel drive mechanism has a rotating plate having a linear groove and a motor for rotating the rotating plate, and the sandwiching portion has a pin protruding upward from the upper surface of the sandwiching portion. The pin of the pinching portion inserted into the groove moves along the groove in accordance with the rotation of the rotating plate, so that the pinching portion can move between the release position and the pinching position. May be good.

Further, a plurality of the holding portions are provided, and the rotating plate has a plurality of the grooves corresponding to the respective pins of the plurality of the holding portions, and the respective pins of the plurality of the holding portions. May be inserted into each of the grooves of the rotating plate.

Further, the flange of the pan may have an extending portion extending downward from the outer end.

Further, the holding portion includes an upper wall portion facing the upper surface of the outer peripheral portion of the inner lid, a side wall portion facing the outer portion of the inner lid and the outer portion of the flange of the pot, and the flange of the pot. The lower wall portion has a lower wall portion facing the lower surface, and the lower wall portion has a protrusion portion that projects upward from the upper surface of the lower wall portion, and when pressurized, the lower end of the flange and the lower wall portion of the lower wall portion. It may come into contact with the protrusion.

Further, a packing extending downward inside the pot body portion may be provided along the outer peripheral portion of the inner lid, and the packing may come into contact with the inner side surface of the pot body portion during pressurization.

Further, a lid opening device that limits the opening operation of the outer lid may be provided while the holding portion is in the holding position.

(Embodiment)
The pressure-type rice cooker according to the embodiment of the present disclosure will be described below. FIG. 1 is a perspective view schematically showing a pressure-type rice cooker according to an embodiment of the present invention. FIG. 2 is a perspective view schematically showing a pressure-type rice cooker in which the pot is omitted with the top lid open.

It is provided with a rice cooker main body 1 having a pot storage portion 1a formed therein, and a pot 2 (see FIG. 4) that is stored in the pot storage portion 1a and can hold a food to be cooked such as rice and water. An outer lid 3 having a hollow structure that can open and close the upper opening of the rice cooker main body 1 is attached to the upper portion of the rice cooker main body 1. A substantially disk-shaped inner lid 4 that can seal the upper opening of the pot 2 is detachably attached to the inside of the outer lid 3 (the side that covers the upper opening of the pot 2). In the present embodiment, the outer lid 3 and the inner lid 4 form a lid that covers the opening of the pot 2 so as to be openable and closable.

The pot storage portion 1a of the rice cooker main body 1 is composed of an upper frame 1b and a tubular portion 1c arranged so as to have a predetermined gap with respect to the side wall of the stored pot 2. The upper frame 1b includes a flange portion that protrudes outward from the upper portion of the tubular portion 1c and fits into the inner peripheral portion of the upper opening of the rice cooker main body 1. The upper end of the tubular portion 1c supports the flange portion 2b provided around the upper opening of the pot 2.

The tubular portion 1c is formed in a bottomed tubular shape corresponding to the shape of the lower portion of the pot 2. A pot bottom heating coil (not shown), which is an example of a heating part for heating (induction heating) the pot 2, is attached to the outer peripheral surface of the tubular part 1c. The pot bottom heating coil is arranged so as to face the center portion and the corner portion of the bottom portion of the pot 2.

Further, a pot temperature sensor, which is an example of a pot temperature detecting unit for measuring the temperature of the pot 2, is arranged so as to be in contact with the bottom of the pot 2 housed in the pot storage unit 1a. Since the temperature of the pot 2 is substantially the same as the temperature of the object to be cooked in the pot 2, the temperature of the object to be cooked in the pot 2 can be detected by detecting the temperature of the pot 2 with the pot temperature sensor. ..

The outer lid 3 includes an upper outer shell member 3a and a lower outer shell member 3b that constitute the outer shell of the outer lid 3. Further, the outer lid 3 includes a hinge shaft 3A (see FIG. 3). The hinge shaft 3A is an opening / closing shaft of the outer lid 3, and both ends thereof are rotatably fixed to the upper frame of the rice cooker main body 1. A torsion coil spring (not shown) is attached around the hinge shaft 3A. The torsion coil spring elastically urges the outer lid 3 in the direction away from the upper opening of the pot 2 (opening direction) with the hinge shaft 3A as the center.

A lid opening device 8 is provided inside the outer lid 3. The lid opening device 8 keeps the state in which the outer lid 3 closes the upper opening of the pot 2 by engaging with a part of the rice cooker main body 1. On the other hand, the lid opening device 8 rotates about the hook shaft when the lid opening button 8B provided on the outer lid 3 is pressed while the outer lid 3 closes the upper opening of the pot 2. As a result, the lid opening device 8 and a part of the rice cooker main body 1 are disengaged, and the outer lid 3 rotates in a direction away from the upper opening of the pot 2 about the hinge shaft 3A by the urging force of the torsion coil spring. do. As a result, the outer lid 3 is in an open state that does not block the upper opening of the pot 2. The outer lid 3 is configured to stop the rotation when, for example, the outer lid 3 is rotated 90 degrees around the hinge shaft 3A from a position where the upper opening of the pot 2 is closed.

A steam cylinder 9 is detachably attached in the vicinity of the hinge shaft 3A of the upper outer member 3a. The upper wall of the steam cylinder 9 is provided with a steam relief hole 9a so that excess steam in the pot 2 can be discharged to the outside of the rice cooker.

Further, the inner lid 4 is provided with a pressure suppression valve 10 capable of opening and closing the steam discharge hole, and a safety valve 11 that opens the pot 2 when the inside of the pot 2 is abnormally pressurized to release the pressure in the pot 2. (See FIG. 4).

The pressure suppression valve 10 is a valve that suppresses the pressure in the pan 2 from rising above a predetermined value (for example, 2.0 atm) higher than the atmospheric pressure. In the present embodiment, the pressure suppression valve 10 is composed of a closing member that closes the steam discharge hole and a spring that urges the closing member so as to close the steam discharge hole. According to this configuration, when the pressure in the pot 2 rises above a predetermined value higher than the atmospheric pressure (for example, when the pressure rises above 2.0 atm), the pressure causes the closing member against the urging force of the spring. Moves and the steam discharge hole is opened. The pressure suppression valve 10 may be made of balls. In that case, when the pressure in the pot 2 becomes larger than its own weight, the pressure suppression valve 10 is pushed only by the pressure in the pot 2 and separates from the steam discharge hole to open the steam discharge hole.

The outer lid 3 is provided with a pressure valve moving mechanism 12 for moving the pressure valve between the closed position and the open position. The pressure valve moving mechanism 12 is configured to hold the pressure valve in the closed position. As a result, the pressure in the pot 2 can be increased (for example, increased from 1.0 atm to 1.2 atm). Further, the pressure valve moving mechanism 12 opens the pressure valve from the closed position by the control of the control unit 14 described later at a predetermined timing when the pressure in the pan 2 becomes a predetermined value (for example, 1.2 atm) or more. It is configured to move to a position. Thereby, the pressure in the pot 2 can be reduced (for example, reduced from 1.2 atm to 1.0 atm). Since the specific configuration of the pressure valve moving mechanism 12 is the same as that of the conventional pressure valve moving mechanism, the description thereof will be omitted here.

In addition, various information such as rice cooking course and rice cooking time are displayed on the outer lid 3, and a specific rice cooking course can be selected from a plurality of rice cooking courses such as white rice course, brown rice course, and white rice (soft) course. Display operation unit 13 is provided. The display operation unit 13 includes a liquid crystal display 13A that displays various information such as a rice cooking course and a rice cooking time, and a plurality of buttons 13B that instruct the execution of rice cooking start, cancellation, reservation, etc. in addition to the selection of the rice cooking course. ing. The user can select a specific rice cooking course and instruct the start of rice cooking by using the plurality of buttons 13B while referring to various information displayed on the liquid crystal display 13A.

Further, a control unit 14 is mounted inside the outer lid 3. The control unit 14 includes a storage unit that stores a plurality of rice cooking sequences for cooking rice. Here, in the "rice cooking sequence", when the four main steps of preheating, raising the temperature, maintaining boiling, and steaming are performed in order, the energization time, heating temperature, heating time, heating output, etc. are predetermined in each step. The procedure for cooking rice. Each rice cooking sequence corresponds to one of a plurality of rice cooking courses. The control unit 14 controls the pot bottom heating coil and the pressure valve moving mechanism 12 based on the rice cooking course selected by the display operation unit 13 and the detection temperature of the pot temperature sensor, and executes the rice cooking process.

Next, with reference to FIGS. 3 and 4, a holding mechanism for holding the pot 2 and the inner lid 4 will be described. FIG. 3 is a plan view showing a state in which the parts on the upper outer shell member 3a side of the outer lid 3 are removed from the pressure type rice cooker. FIG. 4 is a perspective view schematically showing the pot, the inner lid, the holding portion, and the parallel drive mechanism at the release position. The pinching mechanism is a pinching position where the inner lid 4 and the pan 2 are pinched from the release position where the pinching portion 23 for sandwiching the inner lid 4 and the pan 2 and the inner lid 4 and the pan 2 are released. It is composed of a parallel drive mechanism 21 that moves the holding portion 23 in parallel.

The parallel drive mechanism 21 includes a motor 27 whose rotation is controlled by an instruction from the control unit 14, a wire 29 wound around the motor 27, and a rotating plate 31 rotated by the motor 27. When the motor 27 rotates in the forward direction, the wire 29 is wound up and the wire 29 in the reverse direction is sent out. The wire 29 is connected to the rotating plate 31. When the motor 27 rotates in the forward direction, the rotating plate 31 rotates from the release position to the holding position on the lower outer member 3b by the amount that the wire 29 is wound. Further, when the motor 27 rotates in the reverse direction, the wound wire 29 is returned and the rotating plate 31 rotates in the reverse direction from the holding position to the releasing position. The rotating plate 31 may be rotated in the reverse direction by the reaction force of the spring generated when the rotating plate 31 is attached to the rotating plate 31 and the rotating plate 31 moves from the release position to the holding position.

The rotating plate 31 has an annular shape, and four linear grooves 33 are formed every 90 degrees. The rotary plate 31 is made of a metal such as stainless steel or a resin. Further, four linear grooves 37 are formed from the outside to the inside in the lower outer shell member 3b that covers the upper part of the holding portion 23. The pin 47 of the holding portion 23 is inserted into the groove 33 of the rotating plate 31 and the groove 37 of the lower outer shell member 3b.

The sandwiching portion 23 is rotatably supported by the shaft 53 by the arm 51. Further, the holding portion 23 is supported by the shaft 53 so as to be vertically movable together with the arm 51. The upper and lower parts of the shaft 53 are connected to the holder 55. The holder 55 is fixed to the upper outer shell member 3a of the outer lid 3 by a pin 57. As a result, the holding portion 23 has a structure suspended from the outer lid 3 via the arm 51, the holder 55, and the pin 57. Each pin 47 of each holding portion 23 slides along the groove 33 in response to the rotation of the rotating plate 31, so that the holding portion 23 approaches inward from the release position separated from the outside of the pot 2. It is possible to move in parallel to the holding position. In this way, the rotational movement of the rotating plate 31 can be converted into the linear movement of the holding portion 23.

Four sandwiching portions 23 are arranged on the outer side of the flange portion 2b of the pot 2. Therefore, since the inner lid 4 and the pot 2 are sandwiched at four places, the pressure acting on the sandwiching portion 23 is dispersed, and the sandwiching portion 23 can be miniaturized.

Next, refer to FIG. FIG. 5 is a partial vertical cross-sectional perspective view around the holding portion at the release position. The pot 2 has a bottomed cylindrical pot body 2a and a flange 2b extending outward from the upper end of the pot body 2a. The flange portion 2b has an extending portion 2c extending downward from the outer end of the flange portion 2b. The upper peripheral portion of the pot 2 has an inverted U shape due to the upper portion of the pot main body portion 2a, the flange portion 2b, and the extending portion 2c.

The inner lid 4 is provided with a flange portion 4a facing the flange portion 2b of the pot 2 on the outer peripheral portion thereof. A packing 59 that extends downward from the inside of the pot body 2a along the outer peripheral portion of the inner lid 4 is attached to the flange portion 4a. Specifically, the resin member 4b is attached to the outer peripheral edge of the flange portion 4a, and the packing 59 is sandwiched between the flange portion 4a and the resin member 4b. It should be noted that the present invention is not limited to this, and the packing 59 may be sandwiched by folding back the flange portion 4a.

The sandwiching portion 23 is connected to the arm 51, has an upper wall portion 41 extending in the horizontal direction, a side wall portion 43 extending downward from the outer end of the upper wall portion 41, and a lower portion extending inward in the horizontal direction from the lower end of the side wall portion 43. A wall portion 45 and a pin 47 protruding upward from the upper surface of the upper wall portion 41 are provided. The vertical cross section of the sandwiching portion 23 has a horizontal U shape. The sandwiching portion 23 is made of metal, for example, stainless steel.

The inner edges of the upper wall portion 41 and the lower wall portion 45 each have a curved shape along the outer circumference of the pot main body portion 2a. Further, on the upper surface of the lower wall portion 45, a protrusion 45a is formed so as to project upward along the outer periphery of the pot body portion 2a.

Next, the movement of the pinching mechanism will be described. When the user selects a pressure cooking course in which a pressure higher than the normal pressure is applied to the pot 2 and the inner lid 4, the control unit 14 controls the rotation of the motor 27. When the motor 27 rotates, the parallel drive mechanism 21 translates the holding portion 23 from the release position shown in FIGS. 3 to 5 to the holding position shown in FIGS. 6 to 8.

FIG. 6 is a plan view schematically showing the state in the holding position by removing the parts on the upper outer shell member side of the outer lid from the pressure type rice cooker. FIG. 7 is a perspective view schematically showing the pot, the inner lid, the pinching portion, and the parallel drive mechanism at the pinching position. FIG. 8 is a partial vertical cross-sectional perspective view around the holding portion in a normal pressure state at the holding position.

The rotary drive of the motor 27 causes the rotary plate 31 to rotate by a predetermined angle. Due to the rotation of the rotating plate 31, the pin 47 of each holding portion 23 slides from one end to the other end of the groove 33 of the rotating plate 31. At this time, each pin 47 slides along the groove 37 of the lower outer member 3b. By the sliding movement of the pin 47, the arm 51 rotates inward about the shaft 53, and the holding portion 23 moves in parallel from the outer release position to the inner holding position.

Further, the lid opening device 8 includes an interlocking mechanism interlocked with the rotation of the motor 27. The lid opening device 8 locks the engagement with the rice cooker main body 1 with the forward rotation of the motor 27 so that the outer lid 3 does not open even if the lid opening button 8B is pressed. As described above, the lid opening device 8 limits the opening operation of the outer lid 3 while the holding portion 23 is in the holding position.

In the pinching position, the upper wall portion 41 faces the upper surface of the flange portion 4a of the inner lid 4, and the side wall portion 43 faces the outer portion of the inner lid 4 and the outer portion of the flange portion 2b of the pan 2, and the lower wall portion. The portion 45 faces the lower surface of the flange portion 2b of the pan 2. The length from the lower surface of the upper wall portion 41 to the upper surface of the lower wall portion 45 is longer than the thickness of the flange portion 4a of the inner lid 4 and the flange portion 2b and the extending portion 2c of the pot 2. Therefore, in the normal pressure state, there is a gap between the protrusion 45a of the lower wall portion 45 and the lower end of the extending portion 2c of the pot 2 even in the holding position. Further, there is a gap between the lower surface of the upper wall portion 41 and the upper surface of the flange portion 4a of the inner lid 4. Therefore, when the holding portion 23 slides and moves, the holding portion 23 does not come into contact with the pot 2 and the inner lid 4.

Next, refer to FIG. FIG. 9 is a partial vertical cross-sectional perspective view around the holding portion in a pressurized state at the holding position. When the temperature of the pot 2 rises, the water contained in the pot 2 evaporates, and the pressure inside the pot 2 becomes a pressurized state higher than the normal pressure, the inner lid 4 is lifted. When the inner lid 4 is lifted, the upper surface of the flange portion 4a of the inner lid 4 and the lower surface of the upper wall portion 41 come into contact with each other. Further, when the pressure becomes high, the flange portion 4a of the inner lid 4 pushes up the holding portion 23. The sandwiching portion 23 moves upward along the shaft 53 together with the arm 51. When the holding portion 23 moves upward together with the inner lid 4, the protruding portion 45a of the lower wall portion 45 of the holding portion 23 comes into contact with the lower end of the extending portion 2c of the pot 2. A downward pressure is acting on the pot 2. Therefore, an upward pushing force acts on the upper wall portion 41 of the holding portion 23, and a downward pushing force acts on the lower wall portion 45.

In the pressurized state, a gap is created between the flange portion 2b of the pot 2 and the flange portion 4a of the inner lid 4, but the packing 59 hanging from the flange portion 4a of the inner lid 4 is caused by the pressure in the pot 2 to form the pot body. It comes into contact with the inner surface of the portion 2a. As a result, the pot 2 and the inner lid 4 are sealed, and the high pressure state in the pot 2 can be maintained.

When the pressure cooking is completed, the pressure valve moving mechanism 12 opens the pressure valve, and the pressure in the pot 2 returns to the normal pressure. When the pressure valve is opened, the control unit 14 controls the rotation of the motor 27, and the motor 27 rotates in the reverse direction. As a result, the rotating plate 31 rotates in the reverse direction, and each pin 47 slides from the other end to one end. As each pin 47 slides along each groove 33, each pinching portion 23 moves in parallel from the pinching position to the releasing position. Further, the lock of the lid opening device 8 is released as the motor 27 rotates in the reverse direction. As a result, the user can open the outer lid 3 by pressing the lid opening button 8B.

In the present embodiment, the four sandwiching portions 23 can be translated at the same time according to the rotation of the motor 27. When the pinching portion is driven by a rotational operation as in the conventional case, the movement locus of the pinching portion is large in the vertical direction and the horizontal direction. In the case of the present embodiment, since the holding portion 23 is moved in parallel in the horizontal direction and then slightly moved in the vertical direction during pressurization, the movement locus of the holding portion 23 is almost only in the horizontal direction, and the outer lid 3 can be miniaturized. Further, the inner lid 4 can be made into a simple structure by attaching the holding portion 23, which is a horizontal translation mechanism, to the outer lid 3 so as to hang it. As a result, the weight of the inner lid 4 for the pressure type rice cooker can be reduced, and the cleaning of the inner lid 4 can be facilitated.

Further, in the pinching position, at normal pressure, in the vertical direction, between the lower end of the flange portion 2b of the pan 2 and the pinching portion 23, and between the upper surface of the flange portion 4a which is the outer peripheral portion of the inner lid 4 and the pinching portion 23. Has a gap in. As a result, even if the pinching portion 23 moves in parallel from the release position to the pinching position, the pan 2 and the inner lid 4 do not come into contact with each other, and the pinching portion 23 is not scratched. As a result, it is possible to prevent the holding portion 23 and the flange portion 2b of the pan 2 from being worn.

Further, in the pinching position, when pressurizing, the lower end of the flange portion 2b of the pan 2 and the pinching portion 23 come into contact with each other, and the upper surface of the flange portion 4a, which is the outer peripheral portion of the inner lid 4, and the pinching portion 23 come into contact with each other. Contact. As a result, the inner lid 4 and the pot 2 can be reliably sandwiched by the sandwiching portion 23 at the time of pressurization.

Further, since the flange portion 4a of the pan 2 has the extending portion 4c, the strength of the flange portion 4a can be increased and the length of the flange portion 4a in the outward direction can be shortened. As a result, it is possible to suppress the increase in size of the rice cooker main body 1.

Further, since the protrusion 45a is formed on the upper surface of the lower wall portion 45 of the holding portion 23, the strength of the lower wall portion 45 can be increased. As a result, it is possible to prevent the lower wall portion 45 of the holding portion 23 from being pushed down from the extending portion 2c of the pot 2 and deformed.

The present disclosure is not limited to that of the above embodiment, and can be modified as follows.

(1) In the above embodiment, the pressure type rice cooker includes four holding portions 23, but the pressure type rice cooker is not limited to this. Two sandwiching portions 23 may be provided, or only one may be provided.

(2) In the above embodiment, the flange portion 2b of the pan 2 has the extending portion 2c, but the present invention is not limited to this. The flange portion 2b may be, for example, flat plate-shaped.

(3) In the above embodiment, the lower wall portion 45 of the sandwiching portion 23 has a protrusion 45a, but the present invention is not limited to this. The lower wall portion 45 of the sandwiching portion 23 may be, for example, a flat plate.

(4) In the above embodiment, when cooking at normal pressure, the control unit 14 does not rotate the motor 27, and the holding portion 23 does not hold the flange portion 2b of the pot 2 and the outer peripheral portion of the inner lid 4. You may.

The pressure-type rice cooker according to the present disclosure is also useful as, for example, a pressure-type rice cooker used for home and business use.

1 Rice cooker body 1a Pot storage part 1b Upper frame 2 Pot 2a Pot body part 2b Flange part 2c Extension part 3 Outer lid 3A Hinge shaft 3a Upper outer shell member 3b Lower outer shell member 4 Inner lid 4a Flange part 8 Lid opening device 8B Open Closure button 9 Steam cylinder 9a Steam relief hole 10 Pressure suppression valve 11 Safety valve 12 Pressure valve movement mechanism 13 Display operation unit 13A Liquid crystal display 13B button 14 Control unit 21 Parallel drive mechanism 23 Holding part 27 Motor 29 Wire 31 Rotating plate 33 Groove 37 Groove 41 Upper wall part 43 Side wall part 45 Lower wall part 45a Projection part 47 pin 51 Arm 53 Shaft 55 Holder 57 pin 59 Packing

Claims (6)

A pot having a bottomed cylindrical pot body and a flange portion extending outward from the upper end of the pot body,
The inner lid that covers the opening of the pot and
The outer lid to which the inner lid can be attached and detached, and the outer lid
A holding portion that holds the outer peripheral portion of the inner lid and the flange portion of the pot, and a holding portion.
It is equipped with a parallel drive mechanism that reciprocally moves the pinched portion back and forth between the release position and the pinch position.
The parallel drive mechanism is mounted inside the outer lid.
At the pinching position, at normal pressure, there is a gap between the lower end of the flange portion of the pan and the pinching portion and between the upper surface of the outer peripheral portion of the inner lid and the pinching portion in the vertical direction.
At the pinching position, at the time of pressurization, the lower end of the flange portion of the pan and the pinching portion are in contact with each other, and the upper surface of the outer peripheral portion of the inner lid is in contact with the pinching portion.
The parallel drive mechanism has an annular shaped rotary plate having a linear groove and a motor for rotating the rotary plate.
The pinching portion has a pin protruding upward from the upper surface of the pinching portion.
The pin of the pinching portion inserted into the groove moves along the groove in accordance with the rotation of the rotating plate, so that the pinching portion can move between the release position and the pinching position.
Pressure type rice cooker. A plurality of the holding portions are provided.
The rotating plate has a plurality of the grooves corresponding to the respective pins of the plurality of sandwiches.
The pressure-type rice cooker according to claim 1 , wherein each of the pins of the plurality of holding portions is inserted into the respective grooves of the rotating plate. The flange portion of the pan has an extending portion extending downward from the outer end.
The pressure-type rice cooker according to claim 1 or 2 . The sandwiching portion includes an upper wall portion facing the upper surface of the outer peripheral portion of the inner lid, a side wall portion facing the outer portion of the inner lid and the outer portion of the flange portion of the pot, and the flange portion of the pot. It has a lower wall portion facing the lower surface and has a lower wall portion.
The lower wall portion has a protrusion portion that protrudes upward from the upper surface of the lower wall portion.
The pressure-type rice cooker according to any one of claims 1 to 3 , wherein the lower end of the flange portion and the protrusion of the lower wall portion come into contact with each other during pressurization. A packing that extends downward inside the pot body along the outer peripheral portion of the inner lid is provided.
At the time of pressurization, the packing comes into contact with the inner surface of the pot body.
The pressure-type rice cooker according to any one of claims 1 to 4 . A lid opening device for limiting the opening operation of the outer lid is provided while the holding portion is in the holding position.
The pressure-type rice cooker according to any one of claims 1 to 5 .

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