JP2009172031A - Cooker - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent variation in sealing performance for each product and during cooking. <P>SOLUTION: The cooker includes a body 11 provided with an inner pot housing part 32 for detachably housing an inner pot 10 and a lid body 49 openably and closably attached to the body 11 for tightly closing the opening of the inner pot 10, and a lock member 60 for maintaining a closed state to the body 11 is disposed to the lid body 49. In the cooker, a pot flange part 10a projecting outward is provided at the upper end of the inner pot 10, a gap into which the lock part 62 of the lock member 60 can intrude to be locked is provided between the pot flange part 10a and the upper end opening of the inner pot housing part 32, and by locking the lock part 62 of the lock member 60 to the pot flange part 10a of the inner pot 10, the lid body 49 is closed to the body 11. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a cooker such as a rice cooker.

  In a cooking device such as a rice cooker, a protective frame made of a non-conductive material is disposed in the main body, and an induction heating coil wound in an annular shape is disposed on the outer surface of the protective frame. Further, the inner pan has a pan flange portion projecting outward at the upper end opening, and is accommodated so that the pan flange portion is hooked and suspended in the inner pan housing portion having the protective frame. ing. And by supplying an electric current to the induction heating coil, the inner pot accommodated in a state separated from the protective frame by a certain distance by the generated high-frequency magnetic field is induction-heated.

  Moreover, the lid | cover for closing the upper end opening of an inner pot in an airtight state is attached to the cooking device so that rotation with respect to a main body is possible. In this lid body, in order to maintain the state where the lid body is closed with respect to the main body, a lock member is rotatably disposed on the front side. Then, the lock member is rotated by an operation of an operation member disposed so that a part of the lock member is exposed on the surface of the lid body, and is unlocked from the lock receiving portion of the main body, and is arranged at the hinge connection portion. It is released by the biasing force of the installed hinge spring.

  Prior art document information related to the cooking device of the present invention includes the following.

JP 2004-65560 A

  This patent document 1 describes a configuration in which a metal reinforcing plate for reinforcing the lock receiving portion of the main body in a state where the lock portion of the lock member is locked is disposed. This configuration is a pressure-type rice cooker in which a pressure input mechanism such as a relief valve is arranged in the exhaust passage that communicates the inside of the inner pot formed in the lid with the atmosphere, and the pressure in the inner pot is increased to atmospheric pressure or higher. It is effective for.

  However, regardless of the pressure type and the non-pressure type, when the inner pot is heated during cooking, the inner pressure of the inner pot becomes higher than the atmospheric pressure. If it does so, since the load of the open direction which is the direction which leaves | separates from an inner pot acts on the cover body which sealed the inner pot, sealing performance will fall. On the other hand, the locking state between the lid and the main body is affected by the dimensional accuracy of each component, the assembly accuracy of these components, and the strength of each component. Therefore, the positional relationship of each product and the variation in the sealing performance accompanying this are unavoidable.

  This invention is made | formed in view of the conventional problem, and makes it a subject to provide the cooker which can prevent the dispersion | variation in the sealing performance for every product and at the time of cooking.

  In order to solve the above-mentioned problems, a cooking device of the present invention includes a main body provided with an inner pot accommodating portion that detachably accommodates an inner pot, and a lid that is attached to the main body so as to be opened and closed and seals the opening of the inner pot. In the cooker in which the lid is provided with a lock member for maintaining the closed state with respect to the main body, a pan flange portion protruding outward is provided at the upper end of the inner pan, and the pan flange portion Between the upper end opening of the inner pot accommodating portion and the upper end opening of the inner pot, a clearance is provided to allow the locking portion of the locking member to enter and lock, and the locking portion of the locking member is locked to the pot flange portion of the inner pot. Thus, the lid body is closed with respect to the main body.

  According to this cooker, the locking portion of the locking member for maintaining the closed state of the lid body with respect to the main body is locked to the pot flange portion of the inner pot, so that the internal pressure of the inner pot increases during cooking, and the lid body Even if a force in the opening direction acts on the seal, the sealing performance with the inner pot does not deteriorate. In addition, since it is not necessary to dispose a metal reinforcing plate on the main body, the number of parts can be reduced and the cost can be reduced. Furthermore, since the lid is locked to the inner pot to be sealed, it is possible to prevent variations in the sealing performance of each product.

  In this cooker, it is preferable to provide a rotation actuating means for rotating the lock member in the unlocking direction when the lid is closed and rotated. If it does in this way, it can prevent that a user's obstruction | occlusion operation | movement obstruct | occludes.

Specifically, the lid body is hinged on the back side with respect to the main body, and the lock member is rotatably arranged on the front side. The rotation actuating means is connected to the lock member, A projecting piece provided so as to protrude to the front side, and the main body, while interfering with the projecting piece when the lid body is rotated, on the projecting piece when the lock member is rotated when the main body is closed by the lid body It is preferable to provide a guide portion provided with a size that does not interfere.
In this case, it is preferable that the guide portion is rotatably arranged from a first position extending from the main body toward the back side to a second position extending upward.
If it does in this way, it can prevent reliably that the obstruction | occlusion operation | movement of the cover body's obstruction | occlusion arises, and it can prevent reliably that obstruction | occlusion also arises also in the opening operation | movement of a cover body.

  Moreover, it is preferable to arrange | position the resin-made buffer members at least in the latching position of the said lock part in the said pan flange part. If it does in this way, the freedom degree of the shape design of the engaging part with metal locking members can be improved.

Alternatively, the lid body is hinged on the back side with respect to the main body, and the lock member is rotatably arranged on the front side, and the rotation actuating means is connected to the pan flange portion of the inner pot. It is preferable to comprise an inclined portion provided so as to be inclined downward toward the outer end.
In this case, it is preferable that a resin-made buffer member is disposed at least in the locking position of the lock portion in the pan flange portion, and the inclined portion is provided in the buffer member.
In this way, since the rotation actuating means of the lock member can be simply configured, the cost can be reduced.

  Further, the inner pot accommodating portion includes a protective frame made of a non-conductive material that is immovably disposed in the main body and receives the bottom of the inner pot, and guides the inner pot to the outer surface of the protective frame. It is preferable that an induction heating coil to be heated is disposed, and the bottom of the inner pot is placed on the protective frame to be accommodated and held. If it does in this way, the distance of an induction heating coil and an inner pot can be located uniformly. Moreover, the clearance gap which can intrude and lock a lock | rock part can be easily formed between the pan flange part of an inner pot, and the upper end opening part of an inner pot accommodating part.

  Here, when a gap is provided between the opening of the inner pot accommodating portion and the pot flange portion of the inner pot, in the configuration in which the lock portion of the lock member is locked to the lock receiving portion of the main body as in the conventional example. If a force in the opening direction acts on the lid due to an increase in pressure during cooking, the locking receiving portion may be bent and the sealing performance may be further reduced. In addition, in the case of a pressure-type cooker, an excessive load is applied to the latch receiving portion, which may cause damage. However, in this invention, since it is set as the structure which locks the locking part of a locking member to the pan flange part of an inner pot as mentioned above, these problems do not arise.

  Furthermore, the inner pot accommodating portion includes a protective frame made of a non-conductive material that is disposed in the main body so as to be movable up and down and receives a bottom of the inner pot, and the inner pot is disposed on an outer surface of the protective frame. An induction heating coil for induction heating is arranged, and the elastic support that urges the protective frame upward between the protective frame and the bottom surface of the main body and elastically contracts by placing the inner pot. It is preferable that a portion is provided, and the pot flange portion of the inner pot is placed on the opening of the inner pot accommodating portion, and the bottom of the inner pot is placed on the protective frame and stored and held. In this way, the lock portion of the lock member can be reliably locked to the pan flange portion of the inner pot without being affected by the dimensional accuracy and assembly accuracy of each component. And since the protective frame is arrange | positioned so that a vertical movement is possible, the distance of an induction heating coil and an inner pot can be located uniformly. As a result, it is possible to prevent the variation in the heating amount for each product and for each cooked rice.

  In the cooking device of the present invention, since the locking portion of the locking member is locked to the pot flange portion of the inner pot, the sealing performance with the inner pot is reduced even if a force in the opening direction acts on the lid during cooking. In addition, variations in seal performance between products can be prevented. Further, since it is not necessary to dispose a metal reinforcing plate on the main body, the cost can be reduced.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1: shows the rice cooker of the induction heating system which is a cooking appliance which concerns on 1st Embodiment of this invention. This rice cooker includes an inner pot 10 that is an object to be heated, a rice cooker body 11 that houses the inner pot 10, and a lid 49 that is rotatably attached to the rice cooker body 11. In addition, in FIG. 1, in order to clarify the structure of the exterior body of the rice cooker main body 11, and the inner pot accommodating part 32 which accommodates the inner pot 10 so that attachment or detachment is possible, internal mechanisms, such as a control board, are abbreviate | omitted.

  The inner pot 10 has an electric resistance value that is induction-heated by generating eddy currents by electromagnetic waves generated when energizing a high-frequency current to the induction heating coil 44 on the outer surface of a pot base material made of aluminum or the like having high thermal conductivity. A high material is provided by coating or bonding. The inner pan 10 is provided with a pan flange portion 10a projecting outward at the upper end thereof.

  The rice cooker body 11 includes a cylindrical body 12 made of a metal (SUS430) having upper and lower ends opened, a shoulder body 13 that closes the upper end opening of the body 12, and a bottom body 25 that closes the lower end opening of the body 12. The exterior body which has these. The outer casing is provided with an inner pot accommodating portion 32 having a protective frame 35 and an inner trunk 33 inside, and the inner pot 10 is detachably accommodated in the inner pot accommodating portion 32.

  As shown in FIGS. 1 and 2, the shoulder body 13 is an upper member that constitutes an upper portion of the exterior body, and an outer peripheral portion thereof is provided with a mounting rib 14 that fits inside the body 12. Yes. On the back side of the shoulder body 13, a hinge connection portion 15 for rotatably attaching the lid body 49 is provided. Further, an operation panel portion 16 is formed on the shoulder body 13 on the front side located on the left side in FIG. A first screwing portion 17 for fixing a liquid crystal display panel and a display substrate on which a switch is mounted is provided inside the operation panel portion 16. In the operation panel unit 16, a transparent resin cover 18 is disposed in an opening that exposes the liquid crystal display panel so as to be seen through. Furthermore, a second screwing portion 19 for disposing a substrate holder and a fan (not shown) is provided inside the operation panel portion 16.

  The shoulder body 13 is provided with an opening 20 serving as an upper end opening of the inner trunk housing portion. An annular portion 21 for fixing the inner body 33 is provided around the inside of the opening 20. The annular portion 21 is provided with a slit 22 extending in the vertical direction at a predetermined interval in the circumferential direction, and a third screwing portion 23 is provided on the upper portion of the slit 22. Further, a fourth screwing portion 24 for fixing the bottom body 25 is provided around the annular portion 21 so as to form a predetermined internal space.

  The bottom body 25 is a lower member constituting the lower portion of the exterior body, and is provided with a mounting rib 27 fitted to the inside of the body 12 on the outer peripheral portion of the bottom surface 26 having a substantially elliptical shape in plan view. It is. On the front side and the back side of the shoulder body 13, an intake portion 28 and an exhaust portion 29 including a plurality of slits 22 are provided. Further, on the bottom surface 26 of the bottom body 25, a leg portion 30 protruding downward is provided at a predetermined position on the outer peripheral portion. Thereby, the bottom face 26 is comprised so that it may be spaced apart from the surface of the table T which mounts a rice cooker with a predetermined space | interval. Further, the bottom body 25 is provided with a boss portion 31 protruding upward so as to form a substantially conical cylinder shape at a position corresponding to the fourth screwing portion 24 of the shoulder body 13.

  The inner body 33 constituting the inner pot accommodating portion 32 is a cylindrical metal member disposed so as to be positioned at the opening 20 of the shoulder body 13, and a third portion is passed through the slit 22 at the upper end thereof. A screwing piece (not shown) for fixing to the screwing portion 23 is provided. Further, an edge 34 that is curved outward (curled) so as to form a circular cross section is provided at the lower edge of the inner cylinder 33.

  The protective frame 35 is made of a resin which is a non-conductive material disposed so as to cover the lower end opening of the inner cylinder 33. The protective frame 35 has a tray shape including a disc-shaped bottom portion 36 and an expanding portion 37 that expands upward so that the diameter gradually increases. The bottom portion 36 of the protective frame 35 is provided with a plurality (five in the embodiment) of protrusions 38 for accommodating the bottom of the inner pot 10 with a predetermined gap from an induction heating coil 44 described later. . Moreover, the sensor attachment part 39 which has the hole which attaches the temperature sensor which detects the temperature of the inner pot 10 is provided in the expansion part 37 of the protective frame 35 so that it may be located in the upper part at the back side. Further, a fitting rib 40 that protrudes into the edge 34 of the inner body 33 projects from the upper end edge of the expanded portion 37.

  The protective frame 35 of the present embodiment is provided with a cylindrical mounting portion 41 that protrudes downward along the axial direction at the center of the bottom portion 36. The protective frame 35 is provided with a flange portion 42 that protrudes outward in the radial direction at the upper end edge of the expanded portion 37, that is, the lower end edge of the fitting rib 40. Further, the protective frame 35 is sandwiched between the fourth screwing portion 24 of the shoulder body 13 and the boss portion 31 of the bottom body 25, and the protective frame 35 is in a state where it cannot be moved by screwing these. A bracket portion 43 for mounting is provided. The cylindrical attachment portion 41 contacts the bottom surface 26 of the bottom body 25 and is fixed by screwing.

  On the outer surface of the protective frame 35, an induction heating coil 44 that generates electromagnetic waves when energized with a high-frequency current and electromagnetically heats the inner pot 10 via the protective frame 35 is fixed via a ferrite core 48. Yes. The induction heating coil 44 is disposed so as to be positioned at the bottom center of the inner pot 10 and to be positioned outside at a predetermined interval from the outer periphery of the first winding group 45. And a second winding group 46 disposed. In the induction heating coil 44 configured as described above, a non-winding portion 47 that is not wound with a predetermined winding wire is formed between the first winding group 45 and the second winding group 46.

  The ferrite core 48 is formed in a substantially J-shaped rod shape along the outer surface shape of the protective frame 35 and concentrates electromagnetic waves generated from the induction heating coil 44 to locally heat the inner pot 10. The ferrite core 48 is fixed in a holder made of a non-conductive material (synthetic resin). As in the prior art, the holder is formed with a bracket portion (not shown) for screwing and fixing to the screw fastening portion 85 of the protective frame 35.

  When the inner pot 10 is accommodated in the inner pot accommodating portion 32 including the inner trunk 33 and the protective frame 35, the bottom of the inner pot 10 is placed on the protrusion 38 that is the bottom of the protective frame 35. In this state, the pan flange portion 10a of the inner pan 10 is positioned above the opening 20 of the shoulder body 13 at a predetermined interval, and a lock portion 62 of a lock member 60 described later enters between the opening 20 and the pan flange portion 10a. A gap S that can be locked is formed. Thus, in this embodiment, it is set as the structure which mounts the inner pot 10 on the protection frame 35, and by keeping the distance with the bottom of the pot 10 out of the induction heating coil 44, the stable cooking state In addition, the clearance S for entering and locking the lock portion 62 of the lock member 60 can be easily formed.

  As shown in FIGS. 1 and 3, the lid 49 includes an exterior body composed of an upper plate 50 and a lower plate 51, and a decorative panel 52 is disposed on the surface of the upper plate 50, and the inner pot 10 An inner lid 53 is detachably disposed on the lower surface of the opposed lower plate 51, and is rotatably disposed on the hinge connection portion 15 of the shoulder body 13. The lid 49 is formed with an exhaust passage (not shown) for discharging the steam in the inner pot 10 to the outside with a known structure.

  The inner lid 53 includes a metal inner lid main body 54, a seal member 55 disposed on the outer peripheral portion of the inner lid main body 54, and a fitting that maintains a state in which the seal member 55 is attached to the inner lid main body 54. It is the same as the conventional one provided with the member 56.

  An operation member 57 for opening the lid 49 to the rice cooker body 11 and a lock member 60 for releasing the blockage by the operation of the operation member 57 are disposed on the front side of the lid 49. Has been.

  The operation member 57 is rotatably attached to the upper plate 50 and includes an operation portion 58 exposed from an exposure hole 50 a formed in the upper plate 50. A pressing portion 59 for rotating the lock member 60 in the unlocking direction is provided on the inner surface of the operation portion 58. The operating member 57 is biased upward by a kick spring (not shown).

  The lock member 60 is for maintaining the lid 49 in a closed state with respect to the rice cooker main body 11, and is formed by bending a metal plate as shown in FIG. The lock member 60 is provided with shaft portions 61 for being pivotally attached to the lower plate 51 on both side surfaces thereof. And on the both sides of the lower end edge of this lock member 60, a pair of lock parts 62 detachably locked to the lower surface of the pot flange part 10a of the inner pot 10 are provided so as to form an L shape. In addition, the lock member 60 is provided with a receiving portion 63 that extends obliquely upward on the back side at the center of the upper end. And in this embodiment, the protrusion 64 which protrudes toward the front side in the center of the locking member 60 is provided. In addition, the lock member 60 of this embodiment is urged | biased by the engagement position shown in FIG. 3 with the kick spring which is an urging means which is not shown in figure.

  The projecting piece 64 and a guide member 65 disposed rotatably on the shoulder body 13 constitute a rotation operating means for rotating the lock member 60 in the unlocking direction when the lid body 49 is closed and rotated. The guide member 65 includes a guide portion 66 that protrudes from the wall surface extending in the vertical direction in the shoulder body 13 toward the back surface side, and a rotation suppression portion 67 that hangs down from the end of the guide portion 66 along the wall surface. It is L-shaped and is rotatably attached to the shoulder body 13 by passing the rotating shaft 68 through these intersecting portions. Among them, the guide portion 66 interferes with the projecting piece 64 of the lock member 60 during the opening / closing rotation R1 of the lid body 49 around the hinge connection portion 15, while the lock member 60 around the shaft portion 61 in the closed state. The dimension is such that it does not interfere with the projecting piece 64 during the rotation R2. Moreover, the guide part 66 can be rotated by the rotation suppression part 67 from the 1st position extended toward a back surface to the 2nd position extended vertically upwards like illustration.

  The rice cooker configured in this manner energizes the induction heating coil 44 in accordance with a program stored in advance by a microcomputer, which is a control means mounted on the control board, and preheats, raises the temperature (medium patch), maintains boiling, and unevenness. After performing rice cooking control which consists of processes, such as chopping, the heat retention control which maintains the inside of the inner pot 10 at predetermined temperature is performed.

  Then, when the operation portion 58 of the operation member 57 is pressed downward to open the lid body 49 in the closed state of the lid body 49 shown in FIG. 3, as shown in FIG. When the receiving portion 63 is pressed downward, the lock member 60 rotates about the shaft portion 61. Thereby, latching with the lock | rock part 62 and the pot flange part 10a of the inner pot 10 is cancelled | released. At this time, the protrusion 64 of the lock member 60 does not interfere with the guide portion 66 of the guide member 65.

  Thereafter, when the operation of the operation member 57 is stopped, the lid 49 is slightly rotated in the opening direction by the biasing force of the hinge spring disposed in the hinge connection portion 15, so that the lock portion 62 is the pan flange portion of the inner pan 10. Relocking to 10a is prevented. In this state, depending on the opening angle of the lid 49, the protrusion 64 of the lock member 60 may interfere with the guide portion 66. However, in the present embodiment, since the guide member 65 is rotatably arranged from the first position protruding toward the back surface to the second position extending vertically upward, even if the protruding piece 64 interferes with the guide portion 66. The guide member 65 is rotated toward the second position by opening the lid body 49, so that the opening operation of the lid body 49 is not hindered.

  On the other hand, when the lid body 49 is rotated in the closing direction with the lid body 49 shown in FIG. 6 open, the projecting piece 64 of the lock member 60 contacts the guide portion 66 of the guide member 65 as shown in FIG. Then, in this state, when the lid is further rotated in the closing direction, the guide member 65 is configured so that it cannot be rotated downward from the first position by the rotation restraining portion 67, as shown in FIG. The lock member 60 rotates in the unlocking direction. As a result, the lid 49 can be rotated to the normal closing position without causing the lock portion 62 of the lock member 60 to interfere with the pan flange portion 10a of the inner pan 10.

  Then, when the lid 49 is rotated to the normal closing position with respect to the rice cooker main body 11, the protruding piece 64 of the lock member 60 reaches a position where it does not interfere with the guide portion 66 of the guide member 65, as shown in FIG. When the lock member 60 is urged and rotated to the locking position, the lock portion 62 enters between the pan flange portion 10a and the opening 20 and is locked to the lower surface of the pan flange portion 10a.

  Thus, in the rice cooker of this invention, in order to lock the lock part 62 of the lock member 60 for maintaining the obstruction | occlusion state of the cover body 49 with respect to the rice cooker main body 11 to the pan flange part 10a of the inner pot 10, Even if the internal pressure of the inner pot 10 increases during cooking and a force in the opening direction acts on the lid 49, they are not separated by the locking of the lock portion 62 and the pan flange portion 10a. As a result, it can prevent that the sealing performance with the inner pot 10 falls. Moreover, since the lid body 49 is locked to the inner pot 10 that is the object to be sealed, variations in the sealing performance of each product can be prevented. Moreover, since it is not necessary to arrange | position a metal reinforcement board in the rice cooker main body 11 in order to latch the lock | rock part 62, a number of parts can be reduced and cost reduction can be aimed at.

  Note that such a lock structure is particularly effective in the case of a pressure rice cooker in which a well-known pressure input mechanism for blocking the exhaust passage is provided in the exhaust passage of the lid 49. Specifically, when the gap S is provided between the opening 20 of the inner pot accommodating part 32 and the pot flange part 10a of the inner pot 10, the locking member 60 is provided in the latch receiving part of the main body as in the conventional example. In the configuration in which the lock portion 62 is locked, if a force in the opening direction acts on the lid 49 due to an increase in pressure during cooking, the lock receiving portion may be bent and the sealing performance may be further deteriorated. Moreover, since an excessive load is applied to the latch receiving portion, there is a possibility of breakage. However, in this embodiment, since it is set as the structure which latches the lock part 62 of the lock member 60 to the pan flange part 10a of the inner pot 10 as mentioned above, these problems do not arise.

  Moreover, in this embodiment, while providing the protrusion 64 to the locking member 60 and rotating the guide part 66 to the rice cooker main body 11 as a rotation operation means to rotate the locking member 60 in the unlocking direction when the lid 49 is closed and rotated. Since the arrangement is possible, it is possible to surely prevent the lid body 49 from being obstructed by the closing operation, and to reliably prevent the lid body 49 from being obstructed by the opening operation.

  FIG. 9 shows a modification of the rice cooker of the first embodiment. In this modification, it differs from each embodiment by the point which has arrange | positioned the resin-made buffer members 69 in the outer periphery of the pot flange part 10a of the inner pot 10. As shown in FIG. The buffer member 69 has a substantially horizontal U shape covering from the upper end surface to the lower end surface of the pan flange portion 10a. Further, a chamfered portion 70 is provided at the lower outer end portion in order to secure a rotation region of the lock portion 62 of the lock member 60. As described above, the resin buffer member 69 is disposed on the pan flange portion 10 a of the inner pan 10, so that the shape of the engaging portion with the lock portion 62 of the metal lock member 60 can be freely designed. The degree can be improved. Further, it is easy to set and adjust the allowance for engagement with the lock portion 62 and play.

  FIG. 10 shows the rice cooker of the second embodiment. The second embodiment is different from the first embodiment in that an inclined portion 71 is provided on the upper surface of the buffer member 69 as a rotation operation means instead of the rotation operation means including the projecting piece 64 and the guide portion 66. Yes. The inclined portion 71 is provided so that the upper surface of the buffer member 69 covering the outer end of the pan flange portion 10a is inclined downward toward the outer end.

  In the rice cooker according to the second embodiment, when the lid 49 is opened, as in the first embodiment, the operation member 57 is pressed downward so that the inner pot 10 via the buffer member 69 is pressed. The lid 49 can be opened without releasing the locking with the pot flange 10a and re-locking by the biasing force of the kick spring.

  On the other hand, when closing the lid 49, first, the lock portion 62 of the lock member 60 contacts the inclined portion 71 of the buffer member 69 by rotating the lid 49 in the closing direction. In this state, when the user presses the lid 49 further downward, the lock member 60 rotates in the unlocking direction according to the inclination of the inclined portion 71. When the lock portion 62 passes over the lower portion of the outer end of the buffer member 69, the lock member 60 is returned to the locking position by the urging force of the kick spring, and is in a locked state.

  In the second embodiment configured as described above, the same operation and effect as in the first embodiment can be obtained, and it can be performed only by disposing the buffer member 69 made of resin in the inner pot 10, Cost can be reduced.

  FIG. 11 shows a rice cooker according to the third embodiment. In this 3rd Embodiment, the protection frame 35 which comprises the inner pot accommodating part 32 is arrange | positioned by the elastic support part 84 so that an up-and-down movement is possible, and the inner pot 10 makes the pot flange part 10a the opening part of the inner pot accommodating part 32. 20 and greatly different from the first embodiment in that the bottom is held in a state of being placed on the protective frame 35. In the following description, the same components as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  As shown in FIG. 12, the shoulder body 13 of the third embodiment is a plate that is radially inward toward the center of the opening 20 on the fourth screwing portion 24 for fixing the bottom body 25 at a predetermined interval. A regulating plate portion 72 protruding in a shape is further provided. In addition, the opening 20 of the shoulder body 13 is provided with a recessed portion 73 for securing a clearance S in which the lock portion 62 can be inserted and locked at a position corresponding to the lock portion 62 of the lock member.

  In the bottom body 25 of the third embodiment, a plate-shaped guide portion 74 extending in the radial direction at a position corresponding to the bottom center of the protective frame 35 on the bottom surface 26 is provided in the circumferential direction so as to form a substantially cylindrical shape. Projected at intervals. Further, the bottom surface 26 of the bottom body 25 is not wound between the first winding group 45 and the second winding group 46 of the induction heating coil 44 around a plurality of plate-shaped guide portions 74 having an annular shape. A protruding portion 75 is provided so as to be positioned at a lower portion in the vertical direction of the portion 47. The protrusion 75 bulges upward so as to form a substantially disk shape, and its diameter is slightly larger than the diameter of a spring 83 described later. Further, a guide cylinder portion 76 is provided on the boss portion 31 formed on the bottom body 25 so as to form a cylindrical shape. The guide tube portion 76 is provided with an insertion groove 77 for allowing the restricting plate portion 72 of the shoulder body 13 to penetrate therethrough. And in this embodiment, the contact part 78 which protrudes downward so that it may form a cylindrical shape similarly is provided in the position which provided the protrusion part 75 of the bottom face 26. As shown in FIG. The abutting portion 78 is provided so as to project a predetermined gap with respect to the opposing table T.

  As shown in FIGS. 12 and 13, the protective frame 35 of the third embodiment is provided with a cylindrical mounting portion 41 that protrudes downward along the axial direction at the center of the bottom portion 36, as in the third embodiment. It has been. The cylindrical mounting portion 41 is fitted inside a plurality of plate-shaped guide portions 74 formed on the bottom body 25, and tilt regulation for regulating the horizontal tilt of the protective frame 35 with the plate-shaped guide portions 74. Part 79 is configured. A guide rib 80 that protrudes radially outward is provided on the outer peripheral portion of the cylindrical mounting portion 41 so as to be positioned between the adjacent plate-shaped guide portions 74 and 74. Further, a bulging portion 81 that bulges outward in the radial direction so as to form a semi-cylindrical shape is provided between the adjacent guide ribs 80.

  The protective frame 35 is provided with a support rib 82 that protrudes downward from the protruding portion 75 of the bottom body 25 so as to be positioned on the outer periphery of the bottom portion 36. This support rib 82 has a cross-sectional + character shape, and a spring 83 is supported on the outer peripheral portion thereof. The support rib 82 and the spring 83 constitute an elastic support portion 84 that urges the protective frame 35 upward so as to move up and down with a protruding portion 75 formed on the bottom body 25. Note that, on the outer peripheral portion of the support rib 82, a screwing portion 85 for fixing the ferrite core 48 so as to protrude downward from the lower portion of the expanded portion 37, and a support protrusion 86 for supporting the side surface of the ferrite core 48. And are provided.

  Further, the flange portion 42 of the third embodiment formed on the protective frame 35 extends to the upper end surface of the boss portion 31 of the bottom body 25, while the outer peripheral edge is formed with a diameter that does not contact the guide tube portion 76 of the boss portion 31. Has been. Thus, in the assembled state, the flange portion 42 abuts against the upper end surface of the boss portion 31 of the bottom body 25 by moving the protective frame 35 downward against the urging force of the spring 83 while releasing the pressure. Then, the protective frame 35 moves upward by the urging force of the spring 83, thereby coming into contact with the lower end edge of the regulation plate portion 72 of the shoulder body 13. That is, the boss portion 31 of the bottom body 25 serves as a stopper portion that restricts the downward movement of the protective frame 35, and the restriction plate portion 72 of the shoulder body 13 restricts the upward movement of the protective frame 35. Serves as a stopper. However, in the present embodiment, when the inner pot 10 is accommodated, the downward movement of the protective frame 35 stops with the pot flange portion 10a placed on the opening 20, so that the flange portion 42 is at the bottom. There is no contact with the boss 31 of the body 25.

  In addition, in the protective frame 35 of the third embodiment, instead of the bracket portion 43 shown in the first embodiment, a guide groove portion 87 protruding outward in the radial direction so as to form a substantially concave shape on the upper portion of the flange portion 42. Is provided. The guide groove portion 87 is provided at a position corresponding to the insertion groove 77 provided in the boss portion 31. When the shoulder body 13 is mounted, the regulation plate portion 72 of the shoulder body 13 is inserted into the guide groove portion 87. The guide groove portion 87 and the restricting plate portion 72 constitute a rotation restricting portion 88 that restricts rotation in the circumferential direction of the protective frame 35 with the inclination restricting portion 79 as the center.

  In the rice cooker according to the third embodiment, the induction heating coil 44 is disposed on the outer surface of the protective frame 35, the ferrite core 48 is disposed from the outside, and is fixed to the screwing portion 85 by screwing. Further, in the protective frame 35, a spring 83 is disposed on a support rib 82 protruding from between the first winding group 45 and the second winding group 46 of the induction heating coil 44. Next, the protective frame 35 to which the induction heating coil 44 and the ferrite core 48 are fixed is disposed in the bottom body 25. At this time, the inclination restricting portion 79 is configured such that the guide groove portion 87 of the protective frame 35 constituting the rotation restricting portion 88 is positioned in the insertion groove 77 of the guide cylinder portion 76 formed in the boss portion 31 of the bottom body 25. The cylindrical mounting portion 41 of the protective frame 35 is fitted into the plate-shaped guide portion 74 of the bottom body 25.

  Further, an inner cylinder 33 is disposed on the shoulder body 13, and the inner cylinder 33 is fixed to the third screw fixing portion 23 by screwing. Further, the display board is fixed to the shoulder body 13 with screws, and a board holder provided with a control board and a fan is fixed.

  Then, with the body 12 fitted to the bottom body 25, as shown in FIG. 14, the shoulder body 13 to which the inner body 33 is fixed is disposed from above. At this time, as shown in the drawing, the tip of the fourth screwing portion 24 of the shoulder body 13 is inserted into the boss portion 31 of the bottom body 25, and the restriction plate portion 72 of the shoulder body 13 constituting the rotation restriction portion 88 is attached to the protective frame 35. The guide groove 87 is inserted. Further, the lower end edge of the inner body 33 is fitted into the fitting rib 40 of the protective frame 35. Thereafter, the body 12, the shoulder body 13, and the bottom body 25 are fixed by screwing to the fourth screwing portion 24 of the shoulder body 13 from the outside (bottom) side of the bottom body 25 through the boss portion 31. Next, the lid body 49 is rotatably attached to the hinge connection portion 15 of the shoulder body 13.

  In the rice cooker configured as described above, the protective frame 35 constituting the inner pot accommodating portion 32 is urged upward by the elastic support portion 84 so as to be movable up and down. Therefore, as shown in FIG. 15, in a state where the inner pot 10 is not accommodated, the protective frame 35 is urged upward by the spring 83 that constitutes the elastic support portion 84, and the flange portion 42 that is the bottom of the guide groove portion 87. However, the state which contact | abutted to the lower end edge of the control board part 72 of the shoulder body 13 which comprises a stopper part is made | formed.

  In this state, as shown in FIG. 16, when the inner pot 10 is accommodated in the inner pot accommodating portion 32, first, the bottom of the inner pot 10 abuts against the protrusion 38 of the protective frame 35, thereby the inner pot 10. The protective frame 35 moves downward against the urging force of the spring 83 with a weight of 10. Next, the pan flange portion 10 a of the inner pan 10 is placed on the upper end portion of the opening 20 of the shoulder body 13, whereby the downward movement of the protective frame 35 is stopped. Therefore, the flange part 42 of the protective frame 35 does not contact the boss part 31 of the bottom body 25, and the inner pot 10 has the pot flange part 10 a placed on the opening 20 of the inner pot accommodating part 32 and the bottom protected. It is held in a state of being placed on the frame 35.

  On the other hand, when the inner pot 10 is taken out, the protective frame 35 moves upward by the urging force of the spring 83. Then, the upward movement of the protective frame 35 stops in a state where the flange portion 42 is in contact with the regulation plate portion 72 of the shoulder body 13 constituting the stopper portion.

  Further, when the operation member 57 is pressed downward to open the lid 49, the protrusion 64 of the lock member 60 does not interfere with the guide portion 66 of the guide member 65, as in the first embodiment. The member 60 rotates around the shaft portion 61, and the locking between the lock portion 62 and the pan flange portion 10a of the inner pan 10 is released. At this time, by stopping the operation of the operation member 57, the lock member 60 returns to the position before the rotation, and the guide member 65 is rotated even when the protruding piece 64 is in a state of interfering with the guide portion 66. There is no problem in the opening operation of the lid 49.

  Further, when the lid 49 is rotated in the closing direction, the projecting piece 64 of the lock member 60 comes into contact with the guide portion 66 of the guide member 65, whereby the lock member 60 is rotated in the unlocking direction, and the lock member 60 is locked. The lock part 62 can be locked to the pot flange part 10a by rotating the part 62 to the normal closing position without interfering with the pot flange part 10a of the inner pot 10.

  And in 3rd Embodiment, since the pan flange part 10a of the inner pot 10 is the structure mounted on the opening part 20 of the inner pot accommodating part 32, it is influenced by the dimensional accuracy and assembly | attachment precision of each component. The lock part 62 of the lock member 60 can be reliably latched to the pot flange part 10a of the inner pot 10 without fail. In addition, since the protective frame 35 is arranged so as to be movable up and down, the distance between the induction heating coil 44 and the inner pot 10 can be positioned constant. As a result, it is possible to prevent the variation in the heating amount for each product and for each cooked rice.

  Moreover, in the present embodiment, the elastic support portion 84 is provided so as to be positioned between the winding groups 45 and 46, and the tilt restricting portion 79 is provided at the center of the bottom of the protective frame, so that the protective frame 35 is radially outside. The part which protrudes in the direction is not formed. Therefore, it is possible to prevent the product itself from being enlarged due to the enlargement of the protective frame 35.

  Further, the center of the bottom of the protective frame 35 provided with the inclination restricting portion 79 is the portion having the best dimensional accuracy, and therefore hardly affects the assembly accuracy with respect to the bottom body 25. In other words, in this embodiment, since the sensor mounting portion 39 of the temperature sensor is provided in the widened portion 37 of the protective frame 35, the tilt regulating portion may be formed at the center of the bottom with the best dimensional accuracy and assembly accuracy. it can. As a result, the protective frame 35 can be moved in the vertical direction with the horizontal tilt reliably prevented.

  Furthermore, in the present embodiment, since the rotation restricting portion 88 that restricts the rotation of the protective frame 35 in the circumferential direction around the inclination restricting portion 79 is provided on the outer peripheral portion of the protective frame 35 and the shoulder 13, the protective frame The 35 horizontal state can be more reliably maintained. Moreover, since the rotation of the protective frame 35 can be prevented, breakage of the lead wires connected to components such as the induction heating coil 44 and the temperature sensor disposed on the protective frame 35 can be prevented. As a result, the sensor mounting portion 39 of the temperature sensor having a lead wire can be provided in the expanded portion 37 of the protective frame 35. Moreover, since the rotation of the protective frame 35 is prevented, the attachment position of the temperature sensor (contact position with the inner pot 10) does not change, and a constant cooked state can be maintained.

  Furthermore, the spring 83 constituting the elastic support portion 84 is a component that may be induction-heated when the induction heating coil 44 is energized. However, as shown by a two-dot chain line in FIG. Between the groups 45 and 46, since the magnetic fluxes S1 and S2 act so as to cancel each other, the spring 83 is not induction-heated. In other words, the adjacent winding groups 45 and 46 each form a non-winding portion 47 with a predetermined interval between them so that a group of magnetic fluxes S1 and S2 are formed by themselves. An elastic support portion 84 is formed in a non-magnetic field forming portion by the portion 47. Therefore, it is possible to prevent the resin-made protective frame 35 and the exterior body from being melted due to the induction heating of the spring 83.

  In addition, the cooking device of this invention is not limited to the structure of the said embodiment, A various change is possible.

  For example, in the modified example of the first embodiment and the second embodiment, the resin cushioning member 69 is disposed on the entire outer peripheral edge of the pan flange portion 10 a of the inner pan 10, but corresponds to the lock portion 62 of the lock member 60. It is good also as a structure provided only in the position to perform.

  Moreover, in 2nd Embodiment, although it was set as the structure which provided the inclination part 71 in the buffer member 69 as a rotation action means to rotate the lock member 60 in the unlocking direction at the time of closure rotation of the cover body 49, it is the structure which made metal pan flange parts. It is good also as a structure bent so that 10a may incline below toward an outer end. Moreover, it is good also as a structure which arrange | positions another component in the upper part of a flange part instead of the buffer member 69, and provides the inclination part 71 in this another component. Of course, the rotation actuating means is not limited to the combination of the projecting piece 64 and the guide portion 66 or the inclined portion 71, and is configured to be able to rotate the lock member 60 in the unlocking direction when the lid 49 is closed. If applicable, it is applicable.

  Furthermore, in the said embodiment, although the rice cooker was applied and demonstrated as a cooker, if it is a cooker which induction-heats the inner pot 10, it is applicable.

It is sectional drawing which shows the rice cooker which is a cooking device of 1st Embodiment which concerns on this invention. It is a disassembled perspective view which shows the structure of the shoulder body and bottom which comprise an exterior body, and a protection frame. It is a principal part expanded sectional view of FIG. It is a perspective view which shows a locking member and a guide member. It is sectional drawing which shows 1 process of the operation | movement of the rotation action means at the time of open | release of a cover body. It is sectional drawing which shows the state which open | released the cover body. It is sectional drawing which shows 1 process of the operation | movement of the rotation action means at the time of obstruction | occlusion of a cover body. It is sectional drawing which shows another 1 process of operation | movement of the rotation action means at the time of obstruction | occlusion of a cover body. It is sectional drawing which shows the modification of the rice cooker of 1st Embodiment. It is sectional drawing which shows the rice cooker of 2nd Embodiment. It is sectional drawing which shows the rice cooker of 3rd Embodiment. It is a disassembled perspective view which shows the structure of the shoulder body and bottom which comprise the exterior body of 3rd Embodiment, and a protection frame. It is a downward perspective view of a protective frame. It is a perspective view which shows the assembly | attachment state of a bottom body, a protective frame, and a shoulder body. It is sectional drawing which shows the state which took out the inner pot. It is sectional drawing which shows the state which accommodated the inner pot.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Inner pan 10a ... Pan flange part 11 ... Rice cooker main body 15 ... Hinge connection part 20 ... Opening part 26 ... Bottom 32 ... Inner pot accommodating part 33 ... Inner trunk 35 ... Protection frame 36 ... Bottom part 44 ... Induction heating coil 49 ... Lid 53 ... Inner lid 55 ... Sealing member 57 ... Operation member 60 ... Lock member 62 ... Lock part 64 ... Projection piece (rotation actuating means)
65 ... Guide member 66 ... Guide part (rotation actuating means)
69 ... buffer member 71 ... inclined part (rotation actuating means)
84 ... Elastic support part

Claims (9)

A main body provided with an inner pot accommodating portion that detachably accommodates the inner pot, and a lid body that is detachably attached to the main body and seals the opening of the inner pot; In a cooker provided with a lock member for maintaining
A pan flange portion projecting outward is provided at the upper end of the inner pan, and the lock portion of the lock member can be intruded and locked between the pan flange portion and the upper end opening of the inner pan accommodating portion. Make a gap,
The cooker characterized in that the lid is closed with respect to the main body by engaging the lock portion of the lock member with the pan flange portion of the inner pot.   The cooking device according to claim 1, further comprising a rotation actuating unit that rotates the lock member in the unlocking direction when the lid is closed. The lid body is hinged on the back side with respect to the main body, and the lock member is rotatably arranged on the front side.
The rotation actuating means is
A protruding piece provided on the locking member so as to protrude to the front side;
The main body is provided with a guide portion provided with a size that interferes with the protrusion when the lid is rotated, and does not interfere with the protrusion when the lock member is rotated when the main body is closed by the lid. The cooking device according to claim 2, characterized in that:   The cooker according to claim 3, wherein the guide portion is rotatably arranged from a first position extending from the main body toward the back side to a second position extending upward.   The cooker according to any one of claims 1 to 4, wherein a resin cushioning member is disposed at least at a locking position of the lock portion in the pan flange portion. The lid body is hinged on the back side with respect to the main body, and the lock member is rotatably arranged on the front side.
The cooker according to claim 2, wherein the rotation actuating means includes an inclined portion provided on the pot flange portion of the inner pot so as to be inclined downward toward the outer end.   The cooker according to claim 6, wherein a resin-made buffer member is disposed at least at a locking position of the lock portion in the pan flange portion, and the inclined portion is provided on the buffer member. The inner pot accommodating portion includes a protective frame made of a non-conductive material that is immovably disposed in the main body and receives the bottom of the inner pot, and induction heats the inner pot on the outer surface of the protective frame. An induction heating coil is provided,
The cooker according to any one of claims 1 to 7, wherein the bottom of the inner pot is placed on the protective frame to be housed and held. The inner pot accommodating portion includes a protective frame made of a non-conductive material that is disposed in the main body so as to be movable up and down and receives the bottom of the inner pot, and induction heating the inner pot on the outer surface of the protective frame. An induction heating coil is provided,
Between the protective frame and the bottom surface of the main body, while urging the protective frame upward, and providing an elastic support portion that elastically contracts by placing the inner pot,
The pan pot portion of the inner pot is placed on the opening of the inner pot housing portion, and the bottom of the inner pot is placed on the protective frame to be housed and held. The cooking device according to any one of claims 7.

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