JP5809451B2 - Pressure cooker - Google Patents

Description

  The present invention particularly relates to a safety device for a pressure rice cooker having a pressure adjusting device on a lid.

  Generally, a rice cooker has a plurality of heating means such as a work coil, a heat retaining heater, and a lid heater, and automatically cooks and heats using these heating means to provide the user with optimal rice and the like. Widely known.

  By the way, if you cook rice with the inner pot in a pressurized state during each rice cooking process, heat conduction and water absorption speed into the rice will be accelerated, resulting in sufficient water absorption and shortening more delicious rice without uneven cooking. You can cook it in time. Pressure-type rice cookers that meet such demands are already known.

  The shape of the pressure rice cooker is basically the same as that of a normal rice cooker. That is, the pressure rice cooker consists of a rice cooker body and a lid that opens and closes the upper opening of the rice cooker body, and the inner case in the rice cooker body is set with an inner pot for cooking and cooking. Then, the cooked food in the inner pot is cooked by heating means such as a work coil provided on the bottom surface of the inner case and the curved portion from the bottom surface to the side surface. In the lid, a pressure adjusting device for adjusting the pressure in the inner pot is provided. During pressure cooking, the pressure adjusting device is operated to pressurize the inner pot to perform pressure cooking. It will be.

  FIG. 9 shows an example of a conventional pressure adjusting device. The pressure adjusting device 1 includes a solenoid 2, a spherical valve 3, a plunger 4, and the like. A plunger 4 having a projection 6 is slidably fitted to the solenoid 2 and is urged to the right in the figure by a spring 5 when the solenoid 2 is not operated. It is pulled to the left against

  Further, the inner lid 7 which is attached to the lower part of the lid body and faces the inner pot is provided with a vent hole 8 for discharging steam generated in the inner pot. The spherical valve 3 is provided in the form of closing.

  When the solenoid 2 is not in operation, the plunger 4 is in the position shown in FIG. (A), and the projection 6 of the plunger 4 pushes the spherical valve 3 to the right, opens the vent hole 8, and operates the solenoid 2. Sometimes, as shown in FIG. (B), the plunger 4 is pulled to the left, and the spherical valve 3 moves onto the vent hole 8 by its own weight to close the vent hole 8.

  When the vent hole 8 is closed, pressurized rice cooking is performed, and when the pressure in the inner pot reaches a value that can push up the spherical valve 3, the spherical valve 3 is pushed up to open the vent hole 8 and exceed a predetermined value. Release pressure. By repeating this operation, the pressure in the inner pot is adjusted to a predetermined value.

  By the way, when pressure rice is cooked with the lid half-locked on the pressure rice cooker, the lid suddenly opens during pressurized rice cooking, or the lid opens and steam is blown out, so that it is nearby There is a risk that the user may be injured such as hitting the lid itself or ejected steam.

  The above-mentioned conventional devices take measures to eliminate such harmful effects. That is, when the user selects pressurized rice cooking with the lid half-locked (see FIG. (A)), the solenoid 2 is actuated to move the plunger 4 to the left as described above, and the spherical valve 3 is vented. 8 is moved up (see FIG. (B)).

  In the above-mentioned conventional one, a sliding member 12 having a pressing portion 12a in the direction of the lock lever 9 which is a lid opening / closing member is further attached to the plunger 4. And the lock lever 9 is urged | biased counterclockwise by the figure centering on the axis | shaft 10 with the spring which is not shown in figure, and the latching which latches to the latching | locking part 11 provided in the rice cooker main body side below it A claw 9a is provided, and a protruding piece 9b with which the pressing portion 12a abuts is provided above the claw 9a.

  Then, as shown in FIG. 4A, when the pressure rice is selected while the lid is in the half-locked state, the sliding member 12 moves to the left together with the plunger 4, and the pressing portion 12a at the tip thereof counteracts the protruding piece 9b. Push in the clockwise direction to force the semi-locked state into the locked state as shown in FIG.

  Thus, the said conventional thing prevents the pressure rice cooking in a semi-locked state, and there exists a moderate effect. However, to force the half-locked state to the locked state, a powerful solenoid is required, the size of the solenoid increases, and the cost increases as the size of the solenoid increases.

  Moreover, in the case of not providing a means for changing the half-locked state to the locked state like the above-mentioned conventional one, the lid suddenly opens during the pressure cooking as described above, and there is a risk of harming the user.

  By the way, in the above-mentioned conventional one, the sliding member 12 is positioned in the vicinity of the lock lever 9 even when the lid is opened during the pressure rice cooking, and the plunger 4 and the sliding member 12 are integrated and leftward. The lid cannot be opened. In general, there is a request to open the lid during pressurized rice cooking and see how it is done, but the above-mentioned conventional one cannot meet such a request.

  In addition, when the lid is opened during pressurized rice cooking for those that do not have a means for locking the half-locked state like the conventional one, the steam in the inner pan spouts out to the lock lever side, again to the user Risk of harm such as burns.

JP 2006-325843 A

  The purpose of the present invention is to prevent pressurized rice from being cooked even if pressurized rice is selected while the lid is in a semi-locked state, and / or steam is spouted even when the lid is opened during pressurized rice cooking. It is providing the pressurization-type rice cooker which improved safety | security which made it not do.

  In order to achieve the above object, the present invention adopts the following configuration.

The invention according to claim 1 is a pressure rice cooker having a rice cooker body, a lid positioned above the rice cooker body, and a lid opening / closing member for opening and closing the lid body, the rice cooker The main body includes an inner pot and a heating means for heating the inner pot, the lid includes a pressure adjusting device, and the pressure adjusting device includes a valve body that opens and closes a vent hole, a plunger, and the plunger A sliding part that can be moved together or independently, and when the lid body is cooked under pressure in a locked state, the sliding part moves together with the plunger, and the valve body moves to the vent hole When the rice cooker is in a half-locked state, the plunger moves in the direction in which the valve body closes the vent hole, and the sliding portion is attached to the lid opening / closing member. The structure which contacts and prevents the said valve body from closing the said vent hole.

In the invention which concerns on Claim 2, It is a pressure type rice cooker which has a rice cooker main body, the cover body located above the said rice cooker main body, and the lid | cover opening / closing member for opening and closing the said cover body, Comprising: The main body has an inner pot and heating means for heating the inner pot, the lid body has a pressure adjusting device, and the pressure adjusting device includes a valve body and a sliding portion for opening and closing the vent hole. And the sliding portion has a first sliding portion and a second sliding portion, the first sliding portion and the second sliding portion are interlocked, and the lid body is in a half-locked state. During pressurized rice cooking, the second sliding portion abuts on the lid opening / closing member, prevents the valve body from closing the vent hole, and when the lid body is opened during pressurized rice cooking, The lid opening / closing member is configured to press the first sliding portion and release the pressure in the inner pot so that the valve body does not close the vent hole .

The invention according to claim 3 is a pressure rice cooker having a rice cooker body, a lid positioned above the rice cooker body, and a lid opening and closing member for opening and closing the lid body, the rice cooker The main body has an inner pot and heating means for heating the inner pot, the lid body has a pressure adjusting device, and the pressure adjusting device includes a valve body and a sliding portion for opening and closing the vent hole. And the lid opening / closing member has a protruding rib and a bent portion, the sliding portion has an engaging projection and an inclined projection, and when the pressure body is cooked in a state where the lid is locked, The engaging protrusion moves without contacting the protruding rib, the valve body closes the vent hole, and the engaging protrusion is the protruding rib during pressure cooking when the lid body is in a semi-locked state. The valve body does not close the vent hole, and when the lid body is opened during pressurized rice cooking, Bent portion is configured to the inclined projection presses and releases the pressure of the valve body is in said inner bowl so as not to close the vent hole.

According to the first aspect of the present invention, when pressure cooking is performed with the lid half-locked, a part of the sliding portion of the pressure adjusting device abuts against the lid opening / closing member so that the valve body does not close the vent hole. By doing so, it is possible to eliminate the risk of causing harm to a user who is suddenly opened during the pressure cooking in the half-locked state of the lid, and is nearby.
The “half lock” is a state in which the end of the locking portion 52a of the lock lever 50 is slightly engaged with the locking piece 26a.

In the inventions according to claims 2 and 3 , when the lid is opened during pressurized rice cooking, the lid opening / closing member presses the sliding portion so that the valve body does not close the vent hole. The lid can be opened during the pressure cooking. As a result, the safety and reliability of the pressure rice cooker can be further increased.

Whole sectional view in the state where the lid top member of the pressure type rice cooker was removed (A-A line sectional view of Drawing 2) The perspective view which looked at the cover body of the state which removed the cover upper member from diagonally upward Exploded perspective view of each part including pressure regulator Assembly perspective view of each component including a pressure adjusting device in a state where there is no lower lid member Sectional view (A) and plan view (B) showing the positional relationship among the lid opening / closing member, the second sliding member, and the valve body in a fully locked state where pressure rice is not cooked Sectional view (A) and plan view (B) showing the positional relationship between the lid opening / closing member, the second sliding member, and the valve body in the fully locked state during pressure rice cooking Sectional view (A) and plan view (B) showing the positional relationship between the lid opening / closing member, the second sliding member, and the valve body in a half-locked state during pressure cooking Sectional drawing which shows the positional relationship of a lid | cover opening / closing member, the 1st sliding member, and a valve body of the state which open | releases a cover body during pressurized rice cooking etc. Sectional drawing which shows the positional relationship of the lid | cover opening / closing member, sliding member, and valve body at the time of the conventional half lock state

  1 shows a longitudinal cross-sectional view taken along line AA of FIG. 2 with the lid upper member removed, and FIG. 2 shows a perspective view of the lid body with the lid upper member removed obliquely from above. FIG. 4 shows an exploded perspective view of each part including the pressure adjusting device, and FIG. 4 shows an assembled perspective view of each part including the pressure adjusting device in a state in which the lower lid member is removed. In addition, let the hinge axis | shaft 58 side of the pressure type rice cooker 20 be a back side, let the lock lever 50 side of the other side of the hinge axis | shaft 58 be a front side, and let the side orthogonal to the front-back direction be the left-right direction side.

  The whole of the pressure rice cooker 20 is shown in FIG. The pressure rice cooker 20 includes a rice cooker body 21 and a lid 40. The rice cooker main body 21 has an outer case 22 made of a steel plate case or a synthetic resin, and an inner pan 23 such as a metal pan or an earthen pan is detachably set in the outer case 22. On the outside, an inner case 24 that is a protective frame along the shape of the inner pot 23 is provided. The inner case 24 is made of a heat-resistant synthetic resin such as polyethylene terephthalate, for example, and a sensor insertion hole is provided in the center of the bottom portion for allowing the temperature sensor 25 made of a thermistor to face.

  The upper end of the inner case 24 is integrally coupled to the upper end of the outer case 22 via the shoulder member 26. A bottom work coil 27 and a side work coil 28 which are heating means for induction heating the inner pot 23 are provided on the bottom outer surface of the inner case 24 and the curved outer surface from the bottom to the side. The bottom work coil 27 and the side work coil 28 are provided concentrically around the center of the bottom of the inner case 24 at each position of the bottom and curved portions of the inner case 24.

  A coil support base 29 made of synthetic resin is provided outside the bottom work coil 27 and the side work coil 28. By attaching the coil support base 29 to the inner case 24 with screws or the like, the bottom work coil 27 is provided. The side work coil 28 is positioned and fixed at a predetermined position shown in the figure.

  A bottom member 31 is attached to the lower end portion of the outer case 22 with a screw or the like, and the outer case 22 and the bottom member 31 form a container having an opening upward. A control board 32 is provided inside the rear of the outer case 22 so as to hang from the shoulder member 26.

  On the control board 32, electric parts such as a microcomputer and a power supply circuit for controlling heating means such as the bottom work coil 27 and the side work coil 28 are mounted. Since some of these electrical components generate heat, a cooling fin 33 for cooling the heating elements and the like and a cooling fan 34 for radiating heat from the cooling fin 33 are provided in the vicinity of the control board 32. A cord winder 35 is provided on the rear side of the control board 32.

  The lid body 40 includes a resin lid upper member that forms an outer peripheral surface (not shown) and a lid lower member 42. The lid lower member 42 is a resin-made member like the lid upper member, and a U-shaped notch 43 in plan view in which the hinge shaft 58 and the hinge spring 59 are disposed is provided in the rear part thereof.

  Further, a circular steam discharge cylinder 44 is provided at the center and rear of the lid lower member 42, and the steam in the inner pot 23 passes through a steam passage provided in the lid upper member from the steam discharge cylinder 44 and is covered. It is discharged to the outside through a steam port provided on the upper surface of the upper member.

  On the lower lid member 42, a metal reinforcing member 46 for increasing the strength of the lid 40 is provided as shown in FIG. The reinforcing member 46 includes a first reinforcing member 46a located on the front side and a second reinforcing member 46b located on the rear side, and is screwed to the lid lower member 42 in a form extending in the front-rear direction. The division position of the first reinforcing member 46a and the second reinforcing member 46b is on the rear side, and the overall durability is lowered as compared with the case where the reinforcing member 46 is integrated, and the pressure regulator and the safety valve break down. This makes it easy to deform near the dividing position in the event of abnormalities, etc., and prevents adverse effects such as sudden opening of the lid 40 by allowing steam to escape from the deformed part in the event of abnormalities, or rapid ejection of steam from the front side. ing.

  A bearing hole 47 for supporting the lever shaft 57 of the lock lever 50 is provided at the front end of the first reinforcing member 46a, and a hinge shaft 58 is supported at the rear end of the second reinforcing member 46b. The bearing hole 48 is provided.

  A metallic lock lever 50 that is a lid opening / closing member is provided on the front side of the lid lower member 42. As shown in FIGS. 3 and 4, the lock lever 50 is a metal member having an L-shaped cross section including a horizontal portion 51 and a vertical portion 52.

  The horizontal part 51 includes a first horizontal part 51a, a second horizontal part 51b, and a third horizontal part 51c, and the first horizontal part 51a is bent at a substantially right angle above the first sliding member 70 to be in contact with. The second horizontal portion 51b is formed with a protruding rib 54 and a pressing member 55 (FIGS. 1 and 2) protruding horizontally in the direction of the first horizontal portion 51a with which the second sliding member 75 described later contacts. A circular insertion port 55a for inserting a reference spring is formed, and a circular locking port for locking one end of a lever spring 57a (see FIG. 5) for rotating the lock lever 50 is formed in the third horizontal portion 51c. 56 is formed.

  The pressing member 55 is a member having a T-shaped cross section composed of a horizontal disk and a rod-shaped portion, and is inserted into the circular insertion port 55a of the second horizontal portion 51b in a state where the coil spring 55b (see FIG. 1) is inserted into the rod-shaped portion. The nut is inserted and fixed to the lower end portion of the nut, and the lock lever 50 is properly rotated even if a force is applied from obliquely above.

  The vertical portion 52 is cut substantially in the shape of a tunnel from below, and a locking portion 52a having a substantially rectangular shape in plan view bent at a right angle to the rear side is formed at the lower ends of the remaining left and right vertical portions. Is done. The locking portion 52a is locked to a locking piece 26a (see FIG. 5) formed on the shoulder member 26, thereby closing the lid 40.

  A single rod-shaped lever shaft 57 into which a coil-shaped lever spring 57a (see FIG. 5) is inserted is fitted to the lock lever 50, and both ends of the lever shaft 57 are connected to the first reinforcing member 46a. Are inserted into and supported by the left and right bearing holes 47, 47. After the lever shaft 57 is inserted into the bearing holes 47, 47, one end of the lever spring 57a is locked to the locking port 56 of the third horizontal portion 51c, and the other end is locked to the lid lower member 42 side. As a result, the lock lever 50 is attached in the state shown in FIGS. 2 and 4 with a counterclockwise spring force applied.

  When a pressing button (not shown) provided on the upper surface of the lid upper member is pressed from above or by a slide lever or the like, the force is transmitted to the pressing member 55, and when the pressing member 55 is moved downward, the lock lever 50 is As a result, the lid 40 is opened by the spring force of the hinge spring 59.

  A hinge shaft 58 and a hinge spring 59 which are hinge portions are provided in a notch 43 on the rear side of the lid lower member 42. Both ends of the hinge shaft 58 are inserted and supported in bearing holes 48 and 48 at the rear end of the second reinforcing member 46b. A coiled hinge spring 59 is inserted into the hinge shaft 58, one end 59a of the hinge spring 59 is locked to the first reinforcing member 46a (see FIG. 2), and the other end 59b is a shoulder member. 26, and a spring force is always applied to the lid 40 in the opening direction.

  At the center of the lid lower member 42 is provided a valve cover 60 having a rectangular shape in plan view that opens downward and protrudes upward. The valve cover 60 has a postscript that is a component of a pressure adjusting device on the front side. A solenoid 68 is disposed horizontally and in the front-rear direction.

  As shown in FIGS. 2 to 4, a resin-made support member 63 having a substantially rectangular shape in plan view is disposed on the upper surface of the lid lower member 42 in front of the valve cover 60. The support member 63 is a shallow dish-shaped member on which the pressure adjusting device or the like is placed, and a flange 63a that protrudes in the left-right direction and has one screw hole 63a1 is provided on the upper end of the side wall. At the front end thereof, a shaft through hole 63b through which the lever shaft 57 of the lock lever 50 is inserted is provided. The support member 63 is attached to the upper surface of the first reinforcing member 46a by inserting the lever shaft 57 into the shaft through-hole 63b and screwing the screw into the lower lid member 42 from the screw hole 63a1.

  On the upper surface of the support member 63, a solenoid housing chamber 64 having a rectangular shape in plan view for housing a solenoid 68 described later, and an elongated rectangular sliding member in plan view for storing a part of the first sliding member 70 described later. A cylindrical columnar bearing 66 for supporting the storage chamber 65 and the second sliding member 75 described later is provided.

  A solenoid 68 is accommodated horizontally and in the front-rear direction in the solenoid accommodation chamber 64 on the support member 63. At the upper and lower ends of the side wall surface of the solenoid 68, a mounting flange 68a having a rectangular shape in plan view extending in the left-right direction and having a screw hole 68b at the center thereof is provided, and a screw is screwed from the screw hole 68b. By joining, the solenoid 68 is fixed to the lid lower member 42.

  The solenoid 68 is provided with a plunger 69 that moves forward and backward when the solenoid 68 is turned on and off.

  The distal end of the plunger 69 is provided in the front-rear direction so as to face the valve cover 60, and a C-shaped spring support 69 a in front view is attached to the distal end, and further inserted into the outer periphery of the plunger 69. In this configuration, a coil spring 69b is inserted between the solenoid 68 and the spring support 69a, and the plunger 69 is pulled back from the solenoid 68 when the solenoid 68 is off.

  As shown in FIG. 3, the first sliding member 70, which is a sliding portion, is integrally formed in a substantially fishhook shape in plan view having a longitudinally elongated portion 71, a laterally elongated portion 73, and a longitudinally elongated portion 72. This resin member is disposed so as to be movable in the front-rear direction.

  The front / rear direction elongated portion 71 is an elongated rectangular portion in plan view that extends long in the front / rear direction, and protrudes upward on the upper surface of the front end thereof, and has a rectangular shape in front view inclined upward from the front to the rear. The inclined protrusion 71a is integrally provided, and a front side hanging part 71b and a rear side hanging part 71c are provided in parallel on the lower surface thereof with a gap therebetween.

  The rear side of the front-side hanging part 71b in the front-rear direction is stored in the sliding member storage chamber 65 on the support member 63, the rear wall surface of the rear-side hanging part 71c, and the sliding member storage chamber 65. A coil spring 74 is interposed between the inner end wall surface 65a (see FIGS. 3 and 5), and always biases the first sliding member 70 forward.

  The front / rear direction short extension portion 72 is a rectangular portion in plan view that extends short in the front / rear direction, and moves in the front / rear direction in a form along the outer wall portion of the solenoid storage chamber 64.

  The laterally elongated portion 73 is a portion connecting the longitudinally elongated portion 71 and the longitudinally elongated portion 72, and a semicircular arc space 73a (see FIG. 3) is integrally formed, and a rod-like valve pressing protrusion 73b protruding rearward is integrally formed on the rear side wall surface.

  A spring support 69a of the plunger 69 is accommodated in the semicircular arc space 73a. When the solenoid 68 is turned off, the spring support 69a moves the entire first sliding member 70 rearward by the spring force of the coil spring 69b. Is pushing.

  When the solenoid 68 is on, the plunger 69 is pulled forward together with the spring support 69a. However, since the spring support 69a and the semicircular arc space 73a are not connected, the first sliding member 70 is located on the front side. Do not move to. However, in this case, since the coil spring 74 is interposed between the first sliding member 70 and the support member 63, the first sliding member 70 is moved forward of the plunger 69 by the spring force of the coil spring 74. At the same time as moving to, it is moved forward. The spring force of the coil spring 74 is set to be weaker than the spring force of the coil spring 69b.

  The valve pressing protrusion 73b is disposed so as to oppose a later-described spherical valve 90. When the solenoid 68 is turned off, the spherical valve 90 is pushed to open the vent hole 86, and when the solenoid 68 is turned on, the spherical valve 90 is pressed. Leave 90. As a result, the spherical valve 90 moves by its own weight directly above the vent hole 86 and closes the vent hole 86.

  A second sliding member 75, which is a part of the sliding portion, is disposed on the front side of the first sliding member 70. The second sliding member 75 is a monolithic resin member in a plan view with a bent portion 75a in between, and has a hollow shaft 75b at its root, and stands upward at its tip. It has a rod-like engagement projection 75c.

  The hollow shaft 75b is rotatably fitted to the cylindrical bearing 66 on the support member 63, and is mounted on the support member 63 in a form substantially orthogonal to the first sliding member 70 at the time of attachment. After the second sliding member 75 is attached, the front surface of the front hanging portion 71b of the first sliding member 70 is brought into contact with the rear surface of the bent portion 75a.

  The cylindrical bearing 66 on the support member 63 is fitted with a circularly wound spring 76 (see FIG. 3), one end of which is in contact with the second sliding member 75, and the other end is the support member. 63, and urges the second sliding member 75 to rotate clockwise about the hollow shaft 75b. As a result, the rear side surface of the bent portion 75 a of the second sliding member 75 is in contact with the front surface of the front side hanging portion 71 b of the first sliding member 70. The spring force of the spring 76 is set to be weaker than the spring force of the coil spring 74.

  The bent portion 75a of the second sliding member 75 is provided closer to the root of the hollow shaft 75b than the middle of the second sliding member 75. With this configuration, the bent portion 75a is When pushed forward by the front-side hanging portion 71b of one sliding member 70, the engaging protrusion 75c at the tip can move forward on the arc faster than the bent portion 75a. As a result, the engaging protrusion 75 c can come into contact with the protruding rib 54 of the lock lever 50 when the lid 40 is half-locked.

  A circular opening (not shown) is provided on the front side of the valve cover 60 provided in the central portion of the lid lower member 42. The opening has a fitting groove around the opening, and a circular sealing film inside the opening. A circular packing 77 (see FIG. 3) as a whole is fitted, and the inside and outside of the valve cover 60 are sealed. A valve pressing projection 73b of the first sliding member 70 is fitted in the center of the circular sealing film of the packing 77, and this circular sealing film is movable in the front-rear direction together with the valve pressing protrusion 73b. Has been.

  An inner lid 80 is detachably attached to the lower side of the lid 40 so as to face the inner pot 23. A valve unit 81 is attached to the upper surface of the inner lid 80 in a form located below the valve cover 60. When the inner lid 80 is attached to the lower surface of the lid lower member 42, a steam chamber 87 (see FIG. 1) is formed between the upper surface of the valve unit 81 and the lower surface of the valve cover 60.

  The valve unit 81 is provided with a valve storage chamber 83 and a safety valve 84. The valve storage chamber 83 is an inverted U-shaped section having an opening in the front-rear direction, and a mortar-shaped valve mounting portion 85 (see FIG. 3) having a vent hole 86 in the center is provided therein. Above that, a spherical valve 90 as a valve body is disposed.

  The vent hole 86 communicates with the inner pot 23, and when the spherical valve 90 opens the vent hole 86, the steam in the inner pot 23 flows into the steam chamber 87, and then on the steam discharge cylinder 44 and the lid. It is discharged to the outside from a steam port provided on the upper surface of the lid upper member through a steam passage provided in the member.

  When the inner lid 80 is inserted into the lower surface of the lid lower member 42, the valve storage chamber 83 enters the valve cover 60 formed so as to protrude upward from the lower surface of the lid lower member 42, and a spherical valve. 90 is located opposite to the valve pressing protrusion 73b.

  The pressure adjusting device includes the solenoid 68, the plunger 69, and the spherical valve 90. When the solenoid 68 is not activated (off) when pressure rice cooking is not selected, the plunger 69 is pushed outward, and the spherical valve 90 is pushed to pass. The pores 86 are opened.

  When the solenoid 68 for selecting pressurized rice cooking is activated (turned on), the plunger 69 is retracted and the valve pressing projection 73b is separated from the spherical valve 90, so that the spherical valve 90 moves directly above the vent hole 86 by its own weight. Then, the vent hole 86 is closed. As a result, rice cooking is performed at a pressure corresponding to the weight of the spherical valve 90, and when the pressure in the inner pot 23 becomes higher than that, excess steam pushes up the spherical valve 90 and is discharged from the vent hole 86.

  The safety valve 84 is opened at a pressure higher than the opening pressure of the spherical valve 90, and is opened in the event of an abnormality such as the spherical valve 90 does not open.

  A liquid crystal panel (not shown) and various switch buttons are provided on the front side of the lid 40. When normal rice cooking is selected, rice cooking is performed with the solenoid 68 turned off (the vent hole 86 is opened), and pressurized rice cooking is performed. Is selected, rice cooking is performed with the solenoid 68 turned on (the vent hole 86 is closed). The rice cooking is performed by heating the inner pot 23 by Joule heat caused by eddy currents induced by the bottom work coil 27 and the side work coil 28.

  A mechanism in which pressurized rice cooking is not performed when the lid 40 is half-locked will be described with reference to FIGS. In each figure, (A) is a schematic side view, (B) is a schematic plan view, and in FIG. 5 (A), the first horizontal portion 51a and the bent portion 53 at the tip thereof are indicated by broken lines for convenience. The lever spring 57a inserted around the lever shaft 57 is shown.

  FIG. 5 shows the relationship between the lock lever 50, the first sliding member 70, and the second sliding member 75 when the lid body 40 that is not subjected to pressurized rice cooking is in the locked state. As shown, the lock lever 50 is in the locked state. The second sliding member 75 is urged in the clockwise direction indicated by an arrow in FIG.

  The first sliding member 70 and the second sliding member 75 are located on the rear side because the solenoid 68 is off and the plunger 69 is pushed backward. As a result, the valve pressing protrusion 73b of the first sliding member 70 presses the spherical valve 90 to open the vent hole 86.

  FIG. 6 shows the relationship between the lock lever 50, the first sliding member 70, and the second sliding member 75 when the lid 40 is in a locked state during pressurized rice cooking. As shown, the lock lever 50 is in the locked state.

  Further, the first sliding member 70 and the second sliding member 75 are located on the front side because the solenoid 68 is on and the plunger 69 is pulled forward. Then, the first sliding member 70 moves forward as indicated by an arrow in FIGS. (A) and (B), and as a result, the second sliding member 75 is indicated by an arrow in FIG. (B). It is rotated counterclockwise.

  The engaging protrusion 75c at the tip moves toward the protruding rib 54 of the lock lever 50, but the lock lever 50 is in the locked state, and as shown in FIG. The engagement protrusion 75c is located above the engagement protrusion 75c, and reaches the front side through the lower side of the protruding rib 54. Therefore, the first sliding member 70 is pushed forward by the spring force of the coil spring 74, the valve pressing projection 73 b of the first sliding member 70 is separated from the spherical valve 90, and the vent hole 86 is closed by the spherical valve 90. Is done.

  FIG. 7 shows the relationship between the lock lever 50, the first sliding member 70, and the second sliding member 75 during pressurized rice cooking with the lid 40 in the half-locked state. As shown in the figure, the lock lever 50 is in the half-locked position. When the lock lever 50 is in the half-locked position, the protruding rib 54 of the lock lever 50 is in the lower position and is in the same position as the engagement protrusion 75 c of the second sliding member 75.

  Further, even if the lid 40 is in the half-locked state, pressurized rice cooking can be selected. Therefore, when pressurized rice cooking is selected in the half-locked state, the solenoid 68 is turned on and the plunger 69 is moved forward. Be drawn. Then, the first sliding member 70 and the second sliding member 75 are pushed forward by the spring force of the coil spring 74, but the engagement protrusion 75 c at the tip of the second sliding member 75 is formed on the lock lever 50. Abutting on the protruding rib 54, further forward movement is prevented.

  As a result, the first sliding member 70 moves slightly forward, but the valve pressing projection 73b maintains the state where the spherical valve 90 is pressed, and the vent hole 86 is maintained open. Thus, even if it is going to perform pressure rice cooking in the half lock state of lid 40, since air hole 86 is not closed, pressure rice cooking cannot be performed.

  Next, a mechanism in which steam is discharged before the lid 40 is opened when the lid 40 is opened during pressurized rice cooking will be described with reference to FIG. In addition, each figure is a schematic side view, and the protruding rib 54 of the 2nd horizontal part 51b and the 2nd sliding member 75 are conveniently shown with the broken line in FIG. 8 (A).

  In the locked state where the pressurized rice cooking of FIG. (A) is not performed, it is the same as FIG. 5 (A), and in the locked state during the pressurized rice cooking of FIG. (B), it is the same as FIG. Therefore, explanation is omitted.

  The state which opens the cover body 40 at the time of the locked state in the pressure rice cooking of a figure (B) is shown to a figure (C) thru | or figure (E). Fig. (C) is a state diagram in which the bent portion 53 in the middle of opening is in contact with the inclined protrusion 71a, and Fig. (D) is a state diagram in which steam is discharged immediately before unlocking, Fig. (E). These are state diagrams after unlocking.

  As shown in FIG. 3C, when the lock lever 50 is rotated clockwise, which is the opening direction, the bent portion 53 of the lock lever 50 comes into contact with the inclined protrusion 71a. When the lock lever 50 is further rotated in the opening direction, the bent portion 53 of the lock lever 50 presses the inclined protrusion 71a rearward. Then, the first sliding member 70 is pushed rearward against the coil spring 74, and the valve pressing projection 73b of the first sliding member 70 pushes the spherical valve 90 to the state shown in FIG. In this case, since the solenoid 68 is in the on state, the plunger 69 remains pulled forward.

  In the state shown in FIG. (D), the steam in the inner pot 23 is discharged. Therefore, even when the state shown in FIG. (E) is reached and the lid 40 is opened, the high-pressure steam inside does not blow out.

  In this way, the sliding member can be moved independently of the plunger 69, and the sliding member is composed of two interlocking members of the first sliding member 70 and the second sliding member 75, and one of the sliding members By preventing adverse effects such as steam jetting due to a half-locked state on the member and preventing adverse effects such as steam jetting caused by opening the lid during pressure rice cooking on the other sliding member, each action can be performed more reliably. At the same time, the overall structure can be simplified, and it is not necessary to provide a lid opening detection sensor or the like, so that the production cost can be reduced accordingly.

  The present invention is not limited to the configuration of the embodiment described above, and can be appropriately changed in design without departing from the gist of the invention. For example, the heating means may be a heater, and the inner pot is made of metal. It may be made of any material.

  In addition, the solenoid 68 may be controlled so that a current is continuously supplied at the initial stage of operation to perform a drawing operation, and thereafter a pulse current is supplied to maintain the drawing state. Furthermore, in the above description, the plunger 69 and the sliding member are described as separate members, but may be integrated. In that case, it is necessary to weaken the suction force of the solenoid 68 so that when the sliding member is pushed rearward, the plunger 69 is also pulled backward.

DESCRIPTION OF SYMBOLS 20 ... Pressure type rice cooker 21 ... Rice cooker main body 22 ... Outer case 23 ... Inner pan 24 ... Inner case 25 ... Temperature sensor 26 ... Shoulder member 26a ... Locking piece 27 ... Bottom work coil 28 ... Side work coil 29 ... Coil Support base 31 ... Bottom member 32 ... Control board 33 ... Cooling fin 34 ... Cooling fan 35 ... Cord winder 40 ... Cover body 42 ... Under lid member 43 ... Notch 44 ... Vapor discharge tube 46 ... Reinforcement member 46a ... First reinforcement Member 46b ... 2nd reinforcement member 47, 48 ... Bearing hole 50 ... Lock lever 51 ... Horizontal part 51a ... 1st horizontal part 51b ... 2nd horizontal part 51c ... 3rd horizontal part 52 ... Vertical part 52a ... Locking part 53 ... Bending portion 54 ... protruding rib 55 ... pressing member 55a ... insertion port 55b ... coil spring 56 ... locking port 57 ... lever shaft 57a ... lever spring 58 ... hinge shaft 59 ... hinge spring 59a ... End portion 59b ... Other end portion 60 ... Valve cover 63 ... Support member 63a ... Flange 63b ... Shaft through port 64 ... Solenoid storage chamber 65 ... Sliding member storage chamber 65a ... Inner end wall surface 66 ... Cylindrical bearing 68 ... Solenoid 68a ... Installation Flange 69 ... Plunger 69a ... Spring support 69b ... Coil spring 70 ... First sliding member 71 ... Longitudinal extension 71a ... Inclined protrusion 71b ... Front side hanging part 71c ... Back side hanging part 72 ... Longitudinal direction short extension Portion 73 ... Left / right short stretched portion 73a ... Semi-circular space 73b ... Valve pressing projection 74 ... Coil spring 75 ... Second sliding member 75a ... Bent portion 75b ... Hollow shaft 75c ... Engagement projection 76 ... Spring 77 ... Packing 80 ... Inner lid 81 ... Valve unit 83 ... Valve storage chamber 84 ... Safety valve 85 ... Valve mounting portion 86 ... Vent 87 ... Steam chamber 90 ... Spherical valve

Claims (3)

A rice cooker body, a lid located above the rice cooker body, and a pressure rice cooker having a lid opening and closing member for opening and closing the lid body,
The rice cooker body has an inner pot and heating means for heating the inner pot,
The lid body has a pressure adjusting device,
The pressure adjusting device has a valve body that opens and closes a vent hole, a plunger, and a sliding portion that can move together with the plunger or move independently.
When the rice cooker is in a locked state, the sliding portion moves together with the plunger so that the valve body closes the vent hole ,
The plunger moves in a direction in which the valve body closes the vent hole, and the sliding portion comes into contact with the lid opening / closing member when the pressurized rice is cooked in a half-locked state, and the valve body Does not close the vent hole. A rice cooker body, a lid located above the rice cooker body, and a pressure rice cooker having a lid opening and closing member for opening and closing the lid body,
The rice cooker body has an inner pot and heating means for heating the inner pot,
The lid body has a pressure adjusting device,
The pressure adjusting device has a valve body and a sliding part for opening and closing the vent hole,
The sliding portion has a first sliding portion and a second sliding portion,
The first sliding portion and the second sliding portion are interlocked,
At the time of pressure rice cooking when the lid is in a semi-locked state, the second sliding portion abuts on the lid opening / closing member so that the valve body does not close the vent hole,
When the lid is opened during the pressure cooking, the lid opening / closing member presses the first sliding portion, and the valve body does not close the vent hole in the inner pot. A pressure rice cooker characterized by releasing pressure. A rice cooker body, a lid located above the rice cooker body, and a pressure rice cooker having a lid opening and closing member for opening and closing the lid body,
The rice cooker body has an inner pot and heating means for heating the inner pot,
The lid body has a pressure adjusting device,
The pressure adjusting device has a valve body and a sliding part for opening and closing the vent hole,
The lid opening / closing member has a protruding rib and a bent portion,
The sliding portion has an engaging protrusion and an inclined protrusion,
When pressurizing rice with the lid locked, the engagement protrusion moves without contacting the protruding rib, and the valve body closes the vent hole ,
At the time of pressure rice cooking in which the lid is in a semi-locked state, the engagement protrusion comes into contact with the protruding rib so that the valve body does not close the vent hole,
When the opening operation of the lid is performed during pressurized rice cooking, the bent portion presses the inclined projection, and the valve body does not close the vent hole so that the pressure in the inner pot is increased. A pressure rice cooker that is open.

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