JP5604382B2 - rice cooker - Google Patents

Description

  The present invention relates to a pressure rice cooker provided with a lock structure (hook lever hook portion and hook receiving portion) that closes and holds an outer lid, detects that the outer lid is locked, and halfway This prevents a semi-locked state.

  In a pressure rice cooker, for example, when rice is cooked with the outer lid locked in a half-locked state, the outer lid opens vigorously due to the pressure applied to the inside of the inner pot during rice cooking. The hot water and rice inside are scattered outside the inner pot and become dangerous.

  In order to prevent this dangerous state, a technique for detecting the locked state of the outer lid is known.

  In Patent Document 1 (FIGS. 3, 4, and 5), the engaging means provided on the lid body is engaged with the engaged means provided on the main body. Engagement detecting means for detecting, and when the latching claw portion of the engaging means enters the fixing portion of the engaged means sufficiently deeply, the light emitting element provided between the engaged means and the light receiving element By blocking the light, the complete lock state can be detected, and when the light is not blocked, the semi-lock state can be detected. Further, a micro switch is provided in the engaged means, and the engaged state is detected when the micro switch is pressed and when it is not pressed.

JP 2009-191 A

  To lock the lid and the main body with the shaft at the rear of the main body and lock the locking portion to the locked portion on the front side, the locking portion can complete the locking to the locked portion with certainty. In consideration of the variation in the dimensions of the components of the lid, operability and ease of assembly, the likelihood is given to the dimensions.

  Therefore, in the above-described prior art, the one described in Patent Document 1 is precise in the positional relationship of the locking portion, the detection member, the switch, etc., so as to ensure a switch operation stroke and not to cause a half lock. There is a problem that the process of adjustment is required and productivity is poor.

  In order to solve such a problem, in the present invention, a main body and an outer lid that covers an upper portion of the main body are provided, and the outer lid is supported by a flat surface portion and a support portion that is rotatably supported on one end side of the flat surface portion. And a hook lever having a hook-like part bent at the tip of the flat part on the opposite side of the support part, and the hook-like part is locked to the main body when the outer lid is closed. A hook receiving portion, a cantilever that abuts against the flat portion and moves by being pushed by the movement of the flat portion, a switch that operates in accordance with the movement of the cantilever, a lever shaft that supports the cantilever, and the cantilever are provided. A lever spring is provided, and the cantilever is provided at a substantially central portion with a cantilever tip portion that contacts the flat portion avoiding the hook-shaped portion on one side, a switch pushing portion that pushes the actuator of the switch on the opposite end side, and On the side of the hook And mouth and a U groove of a substantially U-shaped carried by the lever shaft, the U-groove of the Kenchireba from the lever shaft is intended to bias by the lever spring in a direction which does not fall off.

  According to the present invention, the operation stroke of the switch can be secured and the half lock can be detected reliably.

  In addition, the switch operating stroke is ensured, and adjustment of the positional relationship of the switch and the like is not required, resulting in high productivity.

It is a longitudinal cross-sectional view of the rice cooker of one Example. It is external appearance explanatory drawing of the rice cooker. It is a structural view explaining the inner lid side of the outer lid. It is the principal expanded sectional view which looked at the A section of FIG. 3 from the P arrow direction. It is a structural diagram explaining the upper inside of the outer cover of one Example. It is a perspective view of the hook lever. (A) Front side (b) Rear side It is explanatory drawing of the main body which removed the outer cover of the rice cooker. It is explanatory drawing which removed the main body of the lower part of the rice cooker. It is the principal enlarged view which looked at the B section of Drawing 7 from the Q arrow direction. It is the principal enlarged view which looked at the B section of Drawing 7 from the R arrow direction. It is a perspective view of the upper frame of one Example. It is the principal enlarged view which looked at the C section of Drawing 11 from the S arrow direction. It is a front perspective view of the button part kumi of one Example. It is a rear perspective view of the button part kumi. It is a front perspective view of the cantilever of one Example. It is a block diagram of the control. It is operation | movement explanatory drawing of the state where the outer cover of the cantilever of one Example is open. It is operation | movement explanatory drawing in the process in which the outer cover of the same cantilever closes. It is operation | movement explanatory drawing of the state which the outer cover of the same cantilever closed.

  Embodiments of the present invention will be described below with reference to FIGS.

  In FIG. 1, a main body 1 of a rice cooker is provided with a protective frame 12 having an upper surface opened inside, and an inner pot 2 is detachably accommodated in the protective frame 12. The protective frame 12 uses a bottomed heat-resistant resin container having a hole for attaching a pan bottom temperature sensor 20 to be described later at the center of the bottom, or uses a substantially cylindrical vacuum container on the side surface to improve heat insulation. Is.

  The inner hook 2 has a bottomed cylindrical shape with an open upper surface, and an upper end portion thereof is bent substantially horizontally outward so that it can be easily attached and detached from the main body 1 and placed on the upper frame 23 on the upper surface of the main body 1. Has been.

  A heating means 4 for inductively heating the bottom surface of the inner pot 2 is provided on the outer bottom portion of the protective frame 12, and a control unit 5 is disposed in a space on the rear surface side between the protective frame 12 and the main body 1. The heating means 4 is controlled by the action of the unit 5.

  The outer lid 3 includes a lid inner surface member 3 a (FIG. 3) constituting the inner surface of the outer lid 3, a lid outer surface member 3 b (FIG. 2) constituting the side appearance of the outer lid 3, and a lid constituting the upper surface appearance of the outer lid 3. The outer member cover 3c (FIG. 2) is used. The operation unit 39 is provided on the lid outer surface member cover 3 c on the upper surface of the outer lid 3. An inner lid 6 that covers the upper surface opening of the inner hook 2 is detachably attached to the inner surface member 3a of the inner lid 2 so that the inner lid 6 can be easily removed by a knob 6a (FIG. 3). The seal packing 7 is brought into contact with the entire periphery of the upper end of the inner hook 2 to keep the space formed by the inner hook 2 and the inner lid 6 in a sealed state.

  A pressure regulating valve 8 that communicates with the sealed space formed by the inner hook 2 and the inner lid 6 is provided at a substantially central portion of the inner lid 6, and when the pressure regulating valve 8 is closed, the inside of the inner lid 2 is predetermined. The exhaust port 18a passes through a steam port cap 18 that is detachably attached to the outer lid 3 through a steam passage 9 provided in the outer lid 3 while adjusting the pressure to 1.3 atm (1.3 atm in this embodiment). It is discharged out of the main body 1 more. When the pressure regulating valve 8 is opened, the inside of the inner hook 2 and the outside air communicate with each other via the exhaust port 18a (FIG. 2), and no pressure is applied to the inner hook 2.

  The main body 1 is provided with a hinge portion 21, and one of the lid inner surface members 3 a is provided with a rotation shaft 22 that pivotally supports the outer lid 3 with the main body 1 so as to be openable and closable. A substantially U-shaped hook lever 15 that is engaged with a hook receiving portion 17 (FIG. 9) provided in the main body 1 so as not to open the outer lid 3 is pivotally supported about the hook shaft 16 as a fulcrum. .

  The rotary shaft 22 is provided with a damper 22a that loosens the operation of the outer lid 3 being opened and stopped, and is gently stopped to improve operability.

  An operation button 10 that is pressed when the outer lid 3 is opened is provided on the front surface of the main body 1. The operation button 10 is provided at the lower part of the upper frame 23 and constitutes a button part kumi 30 having a switch 34 at the lower end. The structure related to the opening and closing of the outer lid 3 will be described later.

  A steam temperature sensor 19 is provided in the steam passage 9 between the steam port cap 18 and the pressure regulating valve 8 so as to be positioned in the vicinity of the pressure regulating valve 8.

  As shown in FIG. 16, the control unit 5 includes the steam temperature sensor 19, a bottom temperature sensor 20 that detects the temperature of the bottom of the inner pot 2, an operation unit 39, a switch 34 to be described later, and the heating unit 4. And the pressure regulation control means 11 and the cooling fan 40 which perform the pressure regulation operation of the pressure regulation valve 8 are connected.

  The operation of the cooling fan 40 and the heating means 4 and the pressure regulating operation for closing and opening the pressure regulating valve 8 based on information from the operation unit 39, the switch 34, the steam temperature sensor 19 and the bottom temperature sensor 20 Switching control is performed between a state in which no pressure is applied.

  The steam port cap 18 is detachably attached to the outer lid 3 from the upper surface so as to be continuous with the steam passage 9.

  The steam port cap 18 is provided with a long air passage in the steam port cap 18 for guiding the steam flowing in from the steam channel 9 to the exhaust port 18a so as to lower the temperature of the steam discharged from the steam channel 9. .

  As shown in FIGS. 3 and 4, two hook-like portions 15 a that are hook levers 15 to be engaged with the hook receiving portion 17 are provided on the lower side of the lid inner surface member 3 a of the outer lid 3. .

  As shown in FIGS. 5, 6 (a) and 6 (b), the hook lever 15 is provided with a support portion 15 b provided with holes 15 f through which the hook shaft 16 passes on the left and right side surfaces in order to support the hook shaft 15. A hook-shaped portion 15a and a flat surface portion 15c are provided at one end with a sandwiched portion, and a contact portion 15e and a spring receiving portion 15d are provided at the other end.

  The hook-shaped portion 15a is a portion that is locked to the hook receiving portion 17 (FIG. 9) and holds the outer lid 3 in a closed state.

  As shown in FIG. 5, the upper surface of the lid inner surface member 3a has one end fixed to the spring holding portion 3d through the hook spring 16a to the hook shaft 16, and the other end abutted against the spring receiving portion 15d of the hook lever 15. 15 is urged in the K arrow direction.

  Further, the flat surface portion 15c is provided in the button portion kumi 30 so that a release lever tip portion 33d (FIGS. 9 and 13) of a later-described release lever 33 (FIG. 13) that operates by operating the operation button 10 is located on the front side (W arrow). It is a part pushed out in the direction (FIG. 13). Further, it is a portion for pushing a cantilever tip 32d of a cantilever 32 described later.

  The contact portion 15e will be described. The pressure regulation control means 11 is an electrical component comprising a solenoid or the like, and moves the output shaft linearly in response to an instruction from the control unit 5. As shown in FIG. 5, the operation is fixed so that the connecting frame member 11 a that surrounds the outer periphery of the pressure regulation control unit 11 and is integrated on the front side is directly coupled to the front-rear operation of the pressure regulation control unit 11. ing. On the front side of the connecting frame member 11a, the rotationally moving member 11b is urged toward the rear side (G arrow direction) by a spring 11c. In a state where the pressure regulation control means 11 does not operate, even if the rotationally moving member 11b is on the side of the connecting frame member 11a, even if the hook lever 15 contacts the hook shaft 16 and the contact portion 15e rotates in the J arrow direction, the contact portion 15e. Since there is no rotational movement member 11b on the lower side, there is no contact and the outer lid 3 can be opened.

  On the other hand, in a state in which the pressure regulation control means 11 is operating, the connecting frame material 11a is moved to the front side by the pressure regulation control means 11, and the rotational movement member 11b is moved to the front side to rotate to the lower side of the contact portion 15e. The member 11b has entered. For this reason, when the hook lever 15 tries to rotate in the direction of the arrow J with the hook shaft 16 serving as a fulcrum, the contact 15e hits the rotationally moving member 11b, so that the outer lid 3 does not open.

  Next, the button part kumi 30 provided in the main body 1 will be described with reference to FIGS. As shown in FIG. 8, the operation button 10 is attached to the upper frame 23 so as to protrude outward, and a switch 34 is provided at the lower end of the button section kumi 30.

  As shown in FIGS. 7, 9, and 10, a lever housing portion 31 is provided on a portion of the upper frame 23 that constitutes the hook receiving portion 17. The lever storage part 31 is provided with a slope 31 a on the upper side of the hook receiving part 17 so that the hook-like part 15 a slides and engages with the hook receiving part 17. The hook receiving part 17 ensures the strength by a steel plate.

  Further, inside the hook receiving portion 17 of the lever storage portion 31, a cantilever tip portion 32d and a release lever tip portion 33d are protruded in the horizontal direction above the hook receiving portion 17 on the front side of the lever storage portion 31.

  Here, as shown in FIGS. 11 and 12, the upper frame 23 has a deformed hole 23 b through which the cantilever tip 32 d of the release lever 33 and the release lever 33 33 and the release lever tip 33 a pass, and a support portion of the button portion kumi 30. And a boss 23a for fixing the fixing hole 35a of 35b.

  The button portion kumi 30 will be described with reference to FIGS. 13 and 14. The button base 35 is substantially U-shaped and includes support portions 35b provided with fixing holes 35a for fixing to the bosses 23a on side surfaces 35g provided on the left and right sides.

  On the front side, a button spring 37 (FIG. 1) urges the operation button 10 in the direction opposite to the direction of the arrow V, and a push portion 10b of the operation button 10 penetrates the rear surface 35h below the front surface 35f of the button base 35. Yes.

  The lever shaft 10a passes through the left and right side surfaces 35g of the button base 35. The lever shaft 10a is pivoted through the arm portions 33b on the left and right sides of the release lever 33. The leaf spring 36 is locked to the upper front side of the release lever 33, and the receiving portion 36a of the leaf spring 36 is pushed by the pushing portion 10b of the operation button 10. The movement of the leaf spring 36 causes the transmission portion 33a to The release lever tip portions 33d provided on the left and right sides are moved.

  When the operation button 10 is pushed in the direction of the V arrow, the receiving portion 36a is moved in the WV arrow direction by the pushing portion 10b and the release lever tip portion 33d is moved in the W arrow direction via the transmission portion 33a. .

  By this release lever tip portion 33d, the flat portion 15c of the hook lever 15 is pushed forward (in the direction of the arrow W), the hook-like portion 15a is detached from the hook receiving portion 17, and the outer lid 3 is opened.

  Next, the cantilever 32 will be described with reference to FIG. The cantilever 32 is provided with two cantilever tip portions 32d on the left and right sides of the upper part, and is provided with a detachable U-groove 32c in the middle, and a switch for operating a switch 34 provided at the lower end of the button base 35 at the lower end. The pushing part 32a is provided.

  The U groove 32c is composed of a linear portion 32e of a frontage F having a width wider than the diameter R with respect to the diameter R of the lever shaft 10a, and an R-shaped portion 32f having the frontage F as a diameter.

  Then, a lever spring 38 (FIG. 17) is provided on the back surface 32b above the U groove 32c of the cantilever 32 hooked on the lever shaft 10a and repels against the release lever 33. The lever spring 38 causes the cantilever tip 32d to move in the direction of the arrow W. It is energized. Therefore, when the outer lid 3 is open, the cantilever tip 32d protrudes in the forward direction of the lever housing 31 as shown in FIG.

  The switch pushing portion 32a is provided so as to push the actuator 34a of the switch 34 as shown in FIG.

  Next, operations of the hook lever 15, the cantilever 32, and the switch 34 will be described with reference to FIGS.

  FIG. 17 is an explanatory view of the operation of the cantilever 32 with the outer lid 3 opened.

  The cantilever 32 is pushed in the direction of the arrow H by the lever spring 38 with the R-shaped portion 32f of the U groove 32c contacting the lever shaft 10a. The cantilever tip 32d protrudes from the front side of the lever housing 31, and the switch pushing portion 32a is kept in a state where it is not pushed against the actuator 34a of the switch 34.

  When the outer lid 3 is closed with the rotation shaft 22 as a fulcrum, the hook-shaped portion 15 a of the hook lever 15 hits the inclined surface 31 a of the lever storage portion 31. Next, when the flange portion 15a slides the slope 31a in the direction of the arrow L and further closes the outer lid 3, the flange portion 15a eventually slides on the slope 31a and engages the hook receiving portion 17. At this time, the hook-shaped portion 15a moves in the Y arrow direction with the hook shaft 16 as a fulcrum.

  Next, FIG. 18 is an operation explanatory view of the cantilever 32 in the process of closing the outer lid.

  As described with reference to FIG. 17, when the hook-shaped portion 15 a of the hook lever 15 is locked to the hook receiving portion 17, the cantilever tip portion 32 d of the cantilever 32 is pushed in the Z arrow direction by the flat surface portion 15 c of the hook lever 15.

  Then, the cantilever 32 is pushed in the H arrow direction by the lever spring 38 with the R-shaped portion 32f of the U groove 32c in contact with the lever shaft 10a, but the cantilever tip 32d above the lever spring 38 is pushed in the Z arrow direction. Since it is pushed in, the lever shaft 10a contacts the R-shaped portion 32f of the U groove 32c and rotates in the M arrow direction. Therefore, the switch pushing portion 32a below the U groove 32c pushes the actuator 34a of the switch 34 in the direction opposite to the Z arrow direction. As a result, the switch 34 is turned on and transmitted to the control unit 5.

  Finally, FIG. 19 is an explanatory view of the operation of the cantilever with the outer lid closed. A state in which the outer lid 3 is completely closed following the process of closing the outer lid 3 shown in FIG. 18 will be described.

  The cantilever tip portion 32d is pushed in the Z arrow direction by the flat portion 15c of the hook lever 15, and the actuator 34a of the switch 34 is pushed by the switch pushing portion 32a. When the push stroke of the actuator 34a of the switch 34 is pushed to the maximum and the cantilever tip 32d is pushed in by the flat portion 15c of the hook lever 15, the cantilever 32 moves in the N arrow direction. Then, from the state where the lever shaft 10a contacts the R-shaped portion 32f of the U-groove 32c and serves as a fulcrum, the R-shaped portion 32f is detached from the lever shaft 10a and pivoted at the linear portion 32e. Therefore, the cantilever 32 escapes with respect to the lever shaft 10a and the movable range is widened. The contact point between the actuator 34a of the switch 34 and the switch pushing portion 32a serves as a fulcrum. Therefore, after the switch 34 is turned ON, the cantilever tip 32d can be pushed into the lever storage portion 31 by the flat surface portion 15c.

  This embodiment has the above configuration, and the operation will be described next.

  When a user puts an appropriate amount of rice and water into the inner pot 2 and inserts it into the protective frame 12 and closes the outer lid 3, the outer lid 3 is rotated by the rotating shaft 22, and the hook lever 15 is supported by the hook shaft 16. By rotating, the hook-shaped portion 15a of the hook lever 15 gets over the hook receiving portion 17 and is locked to the hook receiving portion 17 so that the outer lid 3 is closed.

  When the outer lid 3 is opened in this state, the space formed by the inner hook 2 and the inner lid 6 communicates with the outside air so that no pressure is applied, and the outer lid 3 is pushed upward by the pressure. Since there is no force to do so, the locking force between the hook-shaped portion 15a of the hook lever 15 and the hook receiving portion 17 is weak. As shown in FIGS. 13 and 14, when the user pushes the operation button 10 in the direction of the arrow V with a slight force to open the outer lid 3, the force that the pushing portion 10 b of the operation button 10 moves in the direction of the arrow VV On the other hand, the leaf spring 36 transmits the force applied to the operation button 10 to the release lever 33 while maintaining a small amount of deformation, and the release lever tip 33d of the release lever 33 moves the flat portion 15c of the hook lever 15 forward ( Press in the direction of the arrow W. As a result, the hook lever 15 rotates about the hook shaft 16 to release the engagement between the hook-shaped portion 15a of the hook lever 15 and the hook receiving portion 17, and the outer lid 3 is opened.

  Then, the cantilever tip 32d that has been pushed into the lever housing 31 by the flat portion 15c protrudes from the lever housing 31, and at the same time, the switch pushing portion 32a rotates around the U-groove 32c that pivots on the lever shaft 10a. Thus, the actuator 34a of the switch 34 is opened and the switch 34 is turned OFF. The control unit 5 is informed that the switch 34 is turned off.

  When the outer lid 3 is closed again and the user operates a rice cooking start button (not shown) of the operation unit 39 in order to perform rice cooking, the control unit 5 starts cooking rice.

  When the outer lid 3 is closed, the hook lever 15 pushes in the cantilever tip 32d protruding from the lever housing 31, and the switch push-in portion 32a rotates with the U groove 32c pivoted on the lever shaft 10a as a fulcrum. Then, the actuator 34a of the switch 34 is pushed. Further, even after the actuator 34a of the switch 34 is fully pressed, the hook lever 15 pushes the cantilever tip portion 32d protruding from the lever housing portion 31, so that the lever shaft 10a is disengaged from the R-shaped portion 32f of the U groove 32c. The cantilever 32 is displaced with respect to the lever shaft 10a by being pivoted at the shaped portion 32e, and the movable range is widened. Further, the movement to push the actuator 34a of the switch 34 is continued. Therefore, likelihood can be given to the movement of the actuator 34a of the switch 34 and the dimensional relationship of each part of the cantilever 32.

  When the switch 34 is turned on, the control unit 5 can detect that the outer lid 3 is completely closed, but the switch 34 is in an OFF state (the outer lid 3 is open or in a semi-locked state). Then, I am trying not to move to cooking rice.

  In accordance with a predetermined rice cooking operation, a soaking step is first performed to promote water absorption into the rice. The heating means 4 heats the inner pot 2 (400 W in this embodiment) according to a predetermined temperature (60 ° C. in this embodiment) of the bottom temperature sensor 20, and maintains the water temperature in the inner pot 2 at 55 to 60 ° C. And promote water absorption into rice.

  When a predetermined time (15 minutes in the present embodiment) elapses, the control unit 5 increases the heating amount of the heating means 4 (1000 W in the present embodiment), and the pressure regulation control means 11 operates and the pressure regulating valve 8 operates. It operates to adjust the pressure in the hook 2.

  Eventually, when the water temperature inside the inner pot 2 rises, the pressure inside the inner pot 2 rises due to the generation of steam, and when the operating pressure of the pressure regulating valve 8 rises to 1.3 atm, the boiling point of 107 ° C. corresponding to 1.3 atm And the steam released by the operation of the pressure regulating valve 8 is released to the steam passage 9.

  Since the steam temperature sensor 19 is provided in the vicinity of the pressure regulating valve 8 in the steam passage 9, the inflow of steam is detected by the temperature rise of the steam temperature sensor 19 heated by the steam, and the control unit 5 exceeds a certain temperature. Recognize boiling by becoming.

  The controller 5 reduces the heating amount of the heating means 4 (500 W in this embodiment), but this heating amount maintains 1.3 atm which is the operating pressure of the pressure regulating valve 8 and is 107 ° C. which is the boiling point of this pressure. Continue to boil in or continue intermittently.

  During this time, when pressure is applied, the outer lid 3 is pushed upward with a force of about 100 kg, and the hook-shaped portion 15a of the hook lever 15 and the hook receiving portion 17 are firmly engaged, and easily applied by the frictional force of the load. It will not come off.

  If the user accidentally opens the outer lid 3 in this state and operates the operation button 10, the hook lever 15 is not in a state where it can be easily rotated with a slight force, and therefore the release lever 33 does not move forward. The plate spring 36 is deformed and absorbs the operation force of the operation button 10.

  Further, when the operation button 10 is pushed in strongly, the leaf spring 36 is deformed laterally in proportion to the pushing force, and the operation button 10 is bent behind the transmission portion 33a of the release lever 33. However, at this time, a restoring force is exerted on the release lever 33 so that the deformed shape returns to the original shape, and the pushing force of the operation button 10 is not transmitted to the release lever 33 beyond the restoring force.

Accordingly, even when the user presses the operation button 10, the outer lid 3 is not opened, and safety is ensured.
On the other hand, when the cutting operation is performed in order to stop the cooking of rice during cooking, the control unit 5 stops energization of the heating means 4 to stop heating, and stops the operation of the pressure control control means 11. The pressure regulating valve 8 is opened.

  Thus, when the pressure regulating valve 8 is opened, the steam in the inner pot 2 is discharged from the exhaust port 18 a through the steam passage 9 and the air passage in the steam port cap 18. However, since the path until the steam is released is long, path resistance occurs, and the pressure in the inner pot 2 does not instantaneously become the same pressure as the outside air. And return to the same pressure as the atmospheric pressure over time.

  However, even if the operation of opening the outer lid 3 is performed in a state where this weak pressure remains in the inner hook 2, the restoring force that deforms and returns the leaf spring 36 to its original state is used as the hook-like portion 15a of the hook lever 15. By setting it below the frictional force with which the hook receiving part 17 is locked, the hook-shaped part 15a of the hook lever 15 and the hook receiving part 17 are not released.

  As described above, according to the present embodiment, the operation stroke of the switch 34 can be secured and the half lock can be reliably detected.

  Further, the operation stroke of the switch 34 is ensured, and adjustment of the positional relationship of the hook-shaped portion 15a of the hook lever 15, the cantilever 32, the switch 34, etc. is unnecessary, and the productivity is good.

DESCRIPTION OF SYMBOLS 1 Main body 2 Inner hook 3 Outer cover 4 Heating means 5 Control part 6 Inner cover 8 Pressure regulation valve 9 Steam passage 10 Operation button 10a Lever shaft 11 Pressure regulation control means 13 Connection spring 14 Button lever 15 Hook lever 15a Hook-like part 15b Support part 15c Plane portion 17 Hook receiving portion 21 Hinge portion 23 Upper frame 32 Kench lever 32b Back surface 32c U groove 32d Kench lever tip portion 32e Linear portion 32f R-shaped portion 34 Switch 35 Button base 38 Lever spring

Claims (1)

  A main body and an outer cover that covers the upper portion of the main body, and the outer cover includes a flat part, a support part rotatably supported on one end side of the flat part, and the flat part on the opposite side of the support part A hook lever having a hook-like portion bent at the tip of the hook, and the main body is in contact with the hook receiving portion for locking the hook-like portion when the outer lid is closed, and the flat portion. A cantilever that moves by being pushed by the movement of the plane portion, a switch that operates according to the movement of the cantilever, a lever shaft that supports the cantilever, and a lever spring that biases the cantilever, A cantilever tip that contacts the flat surface while avoiding the hook-like portion on one side, a switch pushing portion that pushes the actuator of the switch on the opposite end side, and an opening on the hook-like portion side in the substantially central portion, the lever Held by shaft And a U-shaped U groove, rice cookers, characterized by biasing by said lever spring from the lever shaft to the direction in which the U-shaped groove does not fall off of the Kenchireba.