JP2017086144A - Cooker - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cooker in which a user can easily grasp a lock state.SOLUTION: A cooker (100) includes a container (5) with an opening, a lid body (11) for covering the container (5) so as to open/close it, a lock part (9) for locking the container (5) and the lid body (11), and a rotation operation part (3) connected to the lock part (9) and rotated from the outside. The rotation operation part (3) is rotated at an angle larger than 30 degrees so that the lock part (9) locks the container (5) and the lid body (7).SELECTED DRAWING: Figure 1

Description

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

  Some cookers such as rice cookers have a function of locking the pan and the lid so as not to be separated from each other. For example, Patent Document 1 discloses a rice cooker in which a user grips a handle provided on a lid and rotates it 30 degrees to lock the pot and the lid.

JP2010-148562A (FIG. 3)

  However, at a small rotation angle of 30 degrees, it is difficult for the user to visually recognize the locked state. Therefore, for example, the user may be worried about whether the pan and the lid are securely locked.

  This invention is made | formed in order to solve said subject, and it aims at providing the cooker with which a user can grasp | ascertain a locked state easily.

  The cooker of the present invention includes a container having an opening, a lid that covers the container so that the container can be opened and closed, a lock unit that locks the container and the lid, and a rotation operation unit that is connected to the lock unit and is rotated from the outside. The lock operation unit locks the container and the lid when the rotation operation unit is rotated more than 30 degrees.

  According to the present invention, since the lock unit locks the container and the lid by rotating the rotation operation unit more than 30 degrees, the user can easily grasp the locked state.

It is sectional drawing which shows the structure of the cooking device of Embodiment 1 of this invention. It is a perspective view which shows the external appearance of the cooking appliance of Embodiment 1. FIG. It is a perspective view which shows the pan-shaped container and cover of the cooking appliance of Embodiment 1. FIG. 3 is a plan view showing a rotation operation unit of the cooking device of Embodiment 1. FIG. FIG. 3 is a cross-sectional view showing an operation unit of the cooking device of the first embodiment. It is a block diagram which shows the control system of the cooking appliance of Embodiment 1. It is a schematic diagram (A) for demonstrating operation | movement of the lock ring of the cooking appliance of Embodiment 1 (B). FIG. 6 is plan views (A) and (B) for explaining a desirable shape of the first engaging portion of the first embodiment. It is a schematic diagram (A) for demonstrating operation | movement of the lock ring of the cooking appliance of Embodiment 2. (B). It is a schematic diagram (A) for demonstrating operation | movement of the lock ring of the cooking appliance of Embodiment 3. (B). It is sectional drawing which shows the operation part of the cooking appliance of Embodiment 3. It is a figure which shows the structural example of the lock ring of the cooking appliance of Embodiment 3. FIG. It is a schematic diagram which shows the operation | movement of the lock ring of the cooking appliance of Embodiment 3.

Embodiment 1 FIG.
FIG. 1 is a cross-sectional view showing a configuration of a heating cooker 100 as a cooking device of the first embodiment. FIG. 2 is a perspective view showing an appearance of the heating cooker 100. The heating cooker 100 is a pressure rice cooker, for example. The cooking device 100 includes a housing 1 (main body), an outer lid 11 as a lid attached to the housing 1 so as to be freely opened and closed, a container cover 2 provided inside the housing 1, and a container cover 2 Are provided with a pot-like container 5 as a container provided inside and a heating coil 10 wound around the container cover 2.

  The housing | casing 1 is a part which makes the main body of the heating cooker 100, and has an opening upwards. A container cover 2 is attached to the inside of the housing 1. An operation panel 17 is attached to the outer peripheral surface of the housing 1. The operation panel 17 is an operation / display unit that displays information representing the state of the heating cooker 100 and receives an operation by a user (operator).

  The container cover 2 has a cylindrical peripheral wall portion 2a and a bottom portion 2b, and has an opening upward. The upper end portion of the peripheral wall portion 2 a of the container cover 2 is fixed to the inner peripheral surface of the opening of the housing 1. An opening for attaching a container temperature sensor 4 to be described later is provided on the bottom 2b of the container cover 2.

  The pan-like container 5 is detachably attached to the inside of a container cover 2 provided in the housing 1. The pot-shaped container 5 is a pot-shaped container having a cylindrical peripheral wall portion 5a and a bottom portion 5b and having an opening upward, and accommodates an object to be heated such as rice. Since the center axis of the pot-like container 5 (more specifically, the center axis of the cylindrical peripheral wall portion 5a) coincides with the rotation axis of the lock ring 9 described later, it is referred to as a rotation axis (center axis) C1. Here, the rotation axis C1 is a vertical axis.

  An upper portion (that is, a portion on the opening side) of the peripheral wall portion 5 a of the pan-like container 5 protrudes upward from the housing 1. A handle portion 6 that is gripped when the user lifts the pot-like container 5 is provided on the upper portion of the peripheral wall portion 5a. The handle portion 6 is formed at two positions symmetrical to the rotation axis C1. The handle portion 6 is supported in contact with the upper end portion of the container cover 2, and a gap is provided between the handle portion 6 and the upper end of the housing 1 so that the user can put a finger.

  Note that the handle portion 6 is actually at a position rotated 90 degrees around the rotation axis C1 from the position shown in FIG. That is, the handle portion 6 is provided at a position where the user's right hand and left hand facing the operation panel 17 can be easily gripped. Further, the casing 1 is provided with a recess at a position where the handle portion 6 is placed, or a mark indicating a position where the handle portion 6 is placed. Thereby, the position of the pot-shaped container 5 with respect to the housing 1 (that is, the rotational position around the rotation axis C1) is regulated.

  FIG. 3 is a perspective view showing the pot-like container 5 and the outer lid 11 separately. A first engaging portion 51 is formed along the peripheral edge of the opening of the pan-like container 5 so as to protrude radially outward in a flange shape. A plurality of (for example, six) first engaging portions 51 are arranged at equal intervals in the circumferential direction of the pan-like container 5. A notch 52 is formed between the adjacent first engaging portions 51.

  Returning to FIG. 1, the heating coil 10 is an induction heating coil disposed around the container cover 2. The heating coil 10 is wound in a spiral shape, and a high-frequency current flows from the inverter unit 22 (FIG. 6). By passing an electric current through the heating coil 10, the pan-like container 5 is heated via the container cover 2.

  A container temperature sensor 4 is disposed in the opening of the bottom 2 b of the container cover 2. The container temperature sensor 4 is pressed against the bottom of the pan-shaped container 5 by a coil spring 4a disposed on the lower side thereof.

  The outer lid 11 covers the pan-like container 5 so as to be freely opened and closed, and is supported so as to be rotatable about a hinge portion (not shown) provided in the housing 1. The outer lid 11 has a disk-shaped top plate portion 11a of the heating cooker 100 and a peripheral wall portion 11b formed along the outer periphery of the top plate portion 11a. The peripheral wall portion 11b protrudes from the top plate portion 11a to the housing 1 side (downward in FIG. 1).

  The outer lid 11 also includes an inner lid 7, a steam cartridge 12 for releasing steam generated in the pan-like container 5, a lock ring 9 as a lock part, and an operation part for operating the lock ring 9. 3 is provided.

  The inner lid 7 is a disk-like member that closes the opening of the pan-like container 5, and is attached to the lower surface of the top plate portion 11 a of the outer lid 11. A packing 8 is provided along the peripheral edge of the opening of the pot-shaped container 5 to close the space between the pot-shaped container 5 and the inner lid 7. The inner lid 7 is provided with a steam port 13. A steam discharge valve 14 is attached to the steam port 13 to control the opening area of the steam port 13. The steam discharge valve 14 is driven by a valve drive unit 15 such as a stepping motor provided in the outer lid 11. A lid temperature sensor 16 that detects the temperature inside the pot-like container 5 is also attached to the inner lid 7.

  The steam cartridge 12 discharges the steam released from the steam port 13 of the inner lid 7 to the outside, and is attached to the outer lid 11. The outer lid 11 is formed with a communication portion that communicates the steam port 13 and the steam cartridge 12. The upper surface of the vapor cartridge 12 is exposed on the upper surface of the outer lid 11. Steam is discharged to the outside through an external steam port 12a formed on the upper surface of the steam cartridge 12.

  The lock ring 9 locks the pan-like container 5 and the outer lid 11. The lock ring 9 is an annular member and is held inside the peripheral wall portion 11 b of the outer lid 11. The lock ring 9 is configured to sandwich the inner lid 7 and the peripheral edge of the opening of the pan-like container 5 in the direction of the rotation axis C1.

  The lock ring 9 includes an annular ring portion 90 centering on the rotation axis C <b> 1 described above, and a second engagement portion 91 that engages with the first engagement portion 51 (FIG. 3) of the pan-like container 5. Have. The ring portion 90 of the lock ring 9 is located on the radially outer side than the inner lid 7 attached to the top plate portion 11 a of the outer lid 11. The second engagement portion 91 protrudes radially inward from the ring portion 90 of the lock ring 9.

  As shown in FIG. 3, a plurality of second engaging portions 91 are arranged at equal intervals in the circumferential direction of the lock ring 9. The number of second engaging portions 91 is the same as the number of first engaging portions 51 of the pan-like container 5 (for example, six). An inner peripheral gear portion 92 (FIGS. 1 and 7) is formed on the inner peripheral surface of the ring portion 90 of the lock ring 9.

  The operation unit 3 is a part that rotates the lock ring 9 around the rotation axis C1 by a user operation. The operation unit 3 includes a rotation operation unit 31 provided on the upper surface of the outer lid 11.

  FIG. 4 is a plan view showing the rotation operation unit 31 of the operation unit 3. FIG. 5 is a cross-sectional view of the operation unit 3 taken along a line segment VV in FIG. The rotation operation unit 31 is rotatably held in a recess (FIG. 5) formed in the top plate part 11a of the outer lid 11, and is exposed on the upper surface of the outer lid 11 so that the user can perform rotation operation. . The rotation operation unit 31 has a circular shape in a plan view, and has a linear knob portion 31a at the center.

  As shown in FIG. 5, the operation unit 3 further includes a shaft portion 32 fixed to the rotation operation portion 31 and a transmission gear portion 33 fixed to the shaft portion 32. The rotation axis C2 that is the central axis of the shaft portion 32 is parallel to the rotation axis C1 described above and is eccentric. The transmission gear portion 33 meshes with the inner peripheral gear portion 92 (FIG. 1) of the lock ring 9. The lock ring 9 is connected to the operation unit 3 with the outer lid 11 interposed therebetween, whereby the lock ring 9 is rotatably held by the outer lid 11.

  With this configuration, when the rotation operation unit 31 of the operation unit 3 is rotated, the shaft portion 32 fixed to the rotation operation portion 31 rotates, and the transmission gear portion 33 fixed to the shaft portion 32 further. Rotates. Then, due to the meshing of the transmission gear portion 33 and the inner peripheral gear portion 92, the lock ring 9 rotates about the rotation axis C1.

  FIG. 6 is a block diagram showing a control system of the cooking device 100. The heating cooker 100 includes a control unit 20 such as a CPU (Central Processing Unit) and a power source 21 that is a power supply source of the heating coil 10. The control unit 20 controls an inverter unit 22 that controls power supply from the power source 21 and a valve drive unit 15 (for example, a stepping motor) that drives the steam discharge valve 14 (FIG. 1). Further, the controller 20 receives the detected temperature from the container temperature sensor 4 and the lid temperature sensor 16 and the user operation information from the operation panel 17.

  Next, operation | movement of the heating cooker 100 of this Embodiment 1 is demonstrated. The user first opens the outer lid 11 of the cooking device 100 and takes out the pan-like container 5 from the housing 1. Thereafter, the user puts the menu material (object to be heated) into the pot-like container 5. Next, the user holds the handle 6 and lifts the pan-like container 5 and accommodates it in the container cover 2 of the housing 1. After the pot-like container 5 is accommodated in the container cover 2 of the housing 1, the user closes the outer lid 11.

  When the outer lid 11 is closed, the inner lid 7 attached to the outer lid 11 closes the opening of the pan-like container 5. Moreover, the packing 8 attached to the inner lid 7 is brought into pressure contact with the peripheral edge of the opening of the pot-like container 5 to seal the inside of the pot-like container 5 in a sealed state.

  7A and 7B are schematic views for explaining the operation of the lock ring 9. FIG. 7A and 7B, only a part of the inner peripheral gear portion 92 is shown, but actually the inner peripheral gear portion 92 is formed over the entire inner periphery of the lock ring 9. May be.

  When the outer lid 11 is closed as described above, the second engaging portion 91 of the lock ring 9 attached to the outer lid 11 passes through the notch 52 of the pan-like container 5 in the axial direction, and the first It reaches below the engaging portion 51. That is, as shown in FIG. 7A, the first engagement portions 51 and the second engagement portions 91 are alternately arranged in the circumferential direction.

  Thereafter, the user pinches the knob 31a of the rotation operation unit 31 of the operation unit 3 with his / her finger to rotate the rotation operation unit 31 in the direction indicated by the arrow in FIG. 7A, for example. When the rotation operation unit 31 rotates, the shaft unit 32 and the transmission gear unit 33 rotate as described above. Then, due to the meshing of the transmission gear portion 33 and the inner peripheral gear portion 92, the lock ring 9 rotates in the same direction as the rotation operation portion 31 about the rotation axis C1.

  When the lock ring 9 rotates, as shown in FIG. 7B, the second engagement portion 91 provided on the lock ring 9 is axially moved with respect to the first engagement portion 51 of the pan-like container 5. The position where it overlaps is reached. That is, the first engaging portion 51 and the second engaging portion 91 are engaged.

  Since the lock ring 9 is held by the outer lid 11, when the first engagement portion 51 and the second engagement portion 91 are engaged, the pan-like container 5 and the outer lid 11 are locked. That is, when the outer lid 11 moves in the direction away from the pan-like container 5 (upward), the first engaging portion 51 of the pan-like container 5 and the second engaging portion 91 of the lock ring 9 come into contact with each other. Thus, the movement of the outer lid 11 is prevented.

  Thereafter, the user operates the switch on the operation panel 17 (FIG. 1) to start cooking. When receiving the cooking start signal from the operation panel 17, the control unit 20 drives the valve driving unit 15 to displace the steam discharge valve 14 until the steam port 13 is blocked.

  The control unit 20 also controls the inverter unit 22 to flow a high-frequency current from the power source 21 to the heating coil 10. A high-frequency magnetic field is generated by the high-frequency current flowing through the heating coil 10, the surface facing the heating coil of the pan-like container 5 magnetically coupled to the heating coil 10 is excited, and an eddy current is induced on the bottom of the container. Joule heat is generated by the eddy current and the resistance of the pan-like container 5, the pan-like container 5 generates heat, and the material (object to be heated) is heated.

  When the material in the pot-shaped container 5 boils, the weight of the steam discharge valve 14 prevents the steam from being discharged from the steam port 13, and pressure is applied to the pot-shaped container 5. The upper limit value of the pressure applied to the inside of the pan-like container 5 is set by the opening area of the steam port 13 and the weight of the steam discharge valve 14 that blocks the steam port 13. For example, when the inner diameter of the steam port 13 is 1 mm and the weight of the steam discharge valve 14 is 10 g, the pressure applied to the inside of the pan-like container 5 is approximately 2.2 atmospheres (abs). When the pressure inside the pot-like container 5 reaches the set upper limit value, the steam pressure pushes the steam discharge valve 14, and the steam is discharged from the external steam port 12 a provided in the steam cartridge 12. Thereby, the pressure inside the pot-like container 5 is kept constant.

  When pressure is applied to the inside of the pan-like container 5, an upward force is applied to the inner lid 7. However, the pan-like container 5 and the inner lid 7 are sandwiched up and down by the lock ring 9, and displacement in the up-down direction (direction of the rotation axis C1) is restricted. Therefore, the inner lid 7 is not opened by the pressure inside the pot-like container 5.

  Even after the supply of current to the heating coil 10 is stopped (that is, after the heating is finished), the internal pressure of the pan-like container 5 is kept higher than the atmospheric pressure. If the outer lid 11 is opened in this state, bumping occurs due to a pressure change, and the material in the pot-like container 5 may jump out. Therefore, after the pressure inside the pot-like container 5 drops to atmospheric pressure, the outer lid 11 Need to open.

  Therefore, the control unit 20 reduces the internal pressure of the pan-like container 5 by cooling or opening the steam discharge valve 14. When it is detected based on the output of the temperature sensor (for example, the container temperature sensor 4 or the lid temperature sensor 16) that the internal pressure has decreased to atmospheric pressure, an end signal is output by the operation panel 17 or voice. The user rotates the rotation operation unit 31 of the operation unit 3 to the opposite side to the locked state (the direction opposite to the arrow shown in FIG. 7A) to lock the pot-shaped container 5 and the outer lid 11. To release. Thereafter, the user opens the outer lid 11 and takes out the material from the pan-like container 5.

  Next, operations of the operation unit 3 and the lock ring 9 will be further described. As shown in FIGS. 7A and 7B, six first engaging portions 51 of the pan-like container 5 and six second engaging portions 91 of the lock ring 9 are provided. . That is, both the first engaging portion 51 and the second engaging portion 91 are arranged at equal intervals of 60 degrees around the rotation axis C1.

  In other words, the angle between the first engagement portion 51 and the second engagement portion 91 adjacent to the first engagement portion 51 in the circumferential direction is 30 degrees (60 degrees / 2). Therefore, when the lock ring 9 is rotated by 30 degrees, the first engagement portion 51 of the pan-like container 5 and the second engagement portion 91 of the lock ring 9 are pivoted as shown in FIG. Overlapping directions.

  Here, in order to make the rotation angle of the transmission gear portion 33 of the operation portion 3 (that is, the rotation angle of the rotation operation portion 31) larger than the rotation angle of the lock ring 9, the transmission gear portion 33 and the inner peripheral gear portion of the lock ring 9 are used. The gear ratio with 92 is set to be larger than 1: 1. The radius of the transmission gear portion 33 is smaller than the radius of the lock ring 9. Further, the rotation center of the transmission gear unit 33, that is, the rotation center of the rotation operation unit 31 (rotation axis C2 shown in FIG. 5) is horizontally directed from the rotation center of the lock ring 9 (rotation axis C1 shown in FIG. 1). Eccentric.

  Thus, when the gear ratio between the transmission gear portion 33 and the inner peripheral gear portion 92 is 1: 3, the rotation angle of the transmission gear portion 33 when the lock ring 9 is rotated by 30 degrees (that is, the rotation of the rotation operation portion 31). Angle) is 30 degrees × 3 = 90 degrees.

  That is, when the user rotates the rotation operation unit 31 by 90 degrees, the pot-shaped container 5 and the outer lid 11 can be locked. Further, the user can release the lock between the pot-shaped container 5 and the outer lid 11 by further rotating the rotation operation unit 31 by 90 degrees.

  Since the rotation angle of the rotation operation unit 31 is larger than the rotation angle of the lock ring 9 as described above, the user can easily determine the locked state and the unlocked state based on the change in the direction of the rotation operation unit 31. Can do.

  In a state where the lock between the pan-like container 5 and the outer lid 11 is released, as viewed from the user facing the heating cooker 100 (that is, the user facing the operation panel 17 shown in FIG. 2), As shown in FIG. 4, the knob portion 31a faces in the horizontal direction. On the other hand, in the locked state, when viewed from the user facing the heating cooker 100, the knob portion 31a faces in the vertical direction. Thus, since the direction of the rotation operation part 31 changes greatly, it is easy to visually recognize the locked state like a key.

  Further, when the first engagement portion 51 and the second engagement portion 91 are not completely engaged (that is, when the pot-shaped container 5 and the outer lid 11 are not sufficiently locked), the rotation operation is performed. Since the knob portion 31a of the portion 31 faces in an oblique direction, the user can easily determine that the lock is insufficient. Therefore, the certainty of the lock | rock with the pan-shaped container 5 and the outer cover 11 can be improved, and safety improves.

  Further, the gear ratio between the transmission gear portion 33 and the inner peripheral gear portion 92 is 1: 3, and the rotation of the rotation operation portion 31 (that is, rotation of the transmission gear portion 33) is decelerated and transmitted to the lock ring 9. It can be locked with a small force, and operability is good.

  The number of the first engaging portions 51 of the pot-shaped container 5 and the second engaging portions 91 of the lock ring 9 is not limited to six, but they are the same number and are arranged at equal intervals in the circumferential direction. It is desirable that

  In addition, when the user attaches the pan-like container 5 to the housing 1, the handle of the housing 1 is used as described above so that the pan-like container 5 can be attached to the rotational position as shown in FIG. It is desirable that a recess is provided at a position where the part 6 is placed or a mark serving as a mark indicating a position where the handle part 6 is placed is attached.

  In the above description, the operation unit 3 includes the rotation operation unit 31 having a circular and linear knob portion 31a. However, the operation unit 3 is not limited to such a shape, and the lock state is easily grasped depending on the rotation angle. I just need it.

  For example, the shape of the rotation operation unit 31 may be a shape in which the change in orientation is easily understood according to the rotation angle, for example, a shape like a triangle. Or it is good also as a shape which a user can perceive the change of height according to a rotation angle.

  In the above description, the rotation angle of the rotation operation unit 31 is 90 degrees. However, the rotation angle of the rotation operation unit 31 may be larger than 30 degrees. For example, the gear ratio between the transmission gear unit 33 and the inner peripheral gear unit 92 may be 1: 2, and the rotation angle of the rotation operation unit 31 may be 45 degrees. Alternatively, the gear ratio between the transmission gear unit 33 and the inner peripheral gear unit 92 may be 2: 3, and the rotation angle of the rotation operation unit 31 may be 60 degrees.

  Here, the desirable shape of the 1st engaging part 51 (flange part) of the pot-shaped container 5 is demonstrated. FIGS. 8A and 8B are plan views of the pan-like container 5 for explaining a desirable shape of the first engaging portion 51 of the first embodiment.

  As described above, the first engaging portion 51 is a portion that protrudes in a flange shape radially outward from the peripheral edge of the opening of the pan-like container 5, and is cut between adjacent first engaging portions 51. A notch 52 is formed. Here, for example, as shown in FIG. 8A, a configuration in which the rectangular first engaging portions 51 and the notches 52 are alternately continued is possible.

  However, as shown in FIG. 8B, it is more desirable to configure the first engaging portion 51 and the notch 52 so as to continue smoothly. In other words, it is desirable to configure the first engaging portion 51 in a petal shape. In other words, it is desirable to form both ends in the circumferential direction of the first engagement portion 51 in a curved shape. If comprised in this way, the touch feeling at the time of a user handling the pot-shaped container 5 is good, and since a mechanical impression is not given, design property also improves.

  However, in the case where the first engagement portion 51 has a petal shape, the area where the first engagement portion 51 and the second engagement portion 91 of the lock ring 9 overlap is larger than that in the rectangular shape. Get smaller. Therefore, if the number of the first engaging portions 51 is more than 6, there is a possibility that the locked state between the pan-like container 5 and the outer lid 11 cannot be sufficiently maintained. Therefore, when the 1st engaging part 51 is made into a petal shape, the number of the 1st engaging parts 51 is desirable 6 or less.

  Further, in this case, the second engagement portion 91 of the lock ring 9 that engages with the first engagement portion 51 can also have a petal shape. However, the lock ring 9 is less frequently maintained by the user, and there is little need to improve the design. Therefore, the second engagement portion 91 of the lock ring 9 can secure an overlapping area necessary for locking with the first engagement portion 51 and has a shape overlapping with the notch 52 when unlocked. Any shape is acceptable. That is, the second engaging portion 91 of the lock ring 9 may be either rectangular or petal-shaped, or may be another shape. If the second engaging portion 91 of the lock ring 9 has a simple shape such as a rectangular shape, the processing is easy, which is advantageous in reducing the manufacturing cost.

  When the lock is released, the second engaging portion 91 of the lock ring 9 and the notch 52 of the pan-like container 5 overlap each other. Therefore, if the second engaging portion 91 is formed large, the inner peripheral side of the notch 52 It is necessary to make the end edge approach the peripheral wall portion 5a of the pan-like container 5. However, if the inner peripheral side edge of the notch 52 is too close to the peripheral wall 5a of the pot-like container 5, it becomes difficult to seal the inside of the pot-like container 5 when the outer lid 11 is closed. Therefore, in order to seal the inside of the pan-like container 5 and reliably suppress steam leakage during pressurization, the inner peripheral side edge of the notch 52 is more radial than the peripheral wall portion 5 a of the pan-like container 5. It is desirable to arrange on the outside.

  As described above, the heating cooker 100 according to Embodiment 1 of the present invention includes the pan-like container 5 having an opening, the outer lid 11 that covers the pan-like container 5 so as to be freely opened and closed, the pan-like container 5 and the outer lid. 11 and a rotation operation unit 31 connected to the lock ring 9 and operated to rotate from the outside. When the rotation operation unit 31 is operated to rotate more than 30 degrees, the lock ring 9 is Is configured to lock the pot-shaped container 5 and the outer lid 11. Therefore, the user can easily determine the locked state based on the rotation position of the rotation operation unit 31.

  Further, since the lock ring 9 is provided so as to sandwich the inner lid 7 and a part of the pot-like container 5 (periphery of the opening), the inner lid 7 is caused by the pressure inside the pot-like container 5 during cooking. Even if pressed, the opening of the inner lid 7 can be suppressed.

  Further, by providing the rotation operation unit 31 of the operation unit 3 on the upper surface of the outer lid 11, the user can easily perform the rotation operation from the outside.

  Further, the lock ring 9 is rotatable with respect to the pan-like container 5, and the lock ring 9 is rotated by the rotation of the rotation operation unit 31. Therefore, by transmitting the rotation of the rotation operation unit 31 to the lock ring 9, the pan-like container 5 and the outer lid 11 can be locked and unlocked.

  In addition, since the rotation angle of the rotation operation unit 31 is larger than the rotation angle of the lock ring 9, the rotation angle of the lock ring 9 is set to the minimum rotation necessary for locking the pot-shaped container 5 and the outer lid 11. Then, the rotation angle of the rotation operation unit 31 can be set to a relatively large rotation angle so that the user can easily recognize the rotation angle.

  In addition, since the rotation axis of the rotation operation unit 31 and the rotation axis of the lock ring 9 are parallel and eccentric to each other, for example, a configuration in which the rotation of the rotation operation unit 31 is decelerated and transmitted to the lock ring 9 is easy. Can be realized.

  The pot-shaped container 5 has a first engaging portion 51 along the periphery of the opening, the lock ring 9 extends in an annular shape along the periphery of the pot-shaped container 5, and the first engaging portion Since the second engaging portion 91 that engages with 51 is provided, the lock ring 9 can be disposed on the radially outer side with respect to the inner lid 7. Therefore, the structure for locking and unlocking the pot-like container 5 and the outer lid 11 can be realized with a relatively small occupied space.

  Further, when the first engagement portion 51 and the second engagement portion 91 overlap each other in the direction of the rotation axis of the lock ring 9, the pot-like container 5 and the outer lid 11 are locked, and the first engagement portion is locked. When the joining portion 51 and the second engaging portion 91 do not overlap with each other in the direction of the rotation axis of the lock ring 9, the lock between the pot-shaped container 5 and the outer lid 11 is released. The pot-like container 5 and the outer lid 11 can be locked and unlocked according to the rotational position.

  Further, since the transmission gear portion 33 of the operation portion 3 is engaged with the inner peripheral gear portion 92 of the lock ring 9, it is possible to easily realize a configuration in which the rotation of the rotation operation portion 31 is decelerated and transmitted to the lock ring 9. Can do.

  Moreover, since the rotation operation part 31 has the knob part 31a extended linearly, the user can judge the locked state by seeing the direction of the knob part 31a.

  Further, since the lock ring 9 is rotatably held by the outer lid 11, a configuration for locking the pan-like container 5 and the outer lid 11 is provided on the outer lid 11 side, and the configuration on the housing 1 side is simplified. Can be.

Embodiment 2. FIG.
Next, a second embodiment of the present invention will be described. FIGS. 9A and 9B are schematic diagrams for explaining the operation of the lock ring 9 according to the second embodiment. In the first embodiment described above, the transmission gear portion 33 attached to the shaft portion 32 of the operation portion 3 meshes with the inner peripheral gear portion 92 of the lock ring 9, and the rotation shaft C 2 of the rotation operation portion 31 and the lock ring 9. The rotation axis C1 was different.

  On the other hand, in the second embodiment, the transmission gear portion 61 attached to the shaft portion 32 of the operation portion 3A meshes with the inner peripheral gear portion 92 of the lock ring 9 via another transmission gear portion 62. ing. Further, the rotation axis C2 of the rotation operation unit 31 (FIG. 5) coincides with the rotation axis C1 of the lock ring 9.

  More specifically, as shown in FIG. 9A, the operation unit 3A includes a rotation operation unit 31 (FIG. 5), a shaft part 32 fixed to the rotation operation part 31, and a shaft part 32. The transmission gear portion 61, the transmission gear portion 62 that meshes with the transmission gear portion 61, and a support shaft 64 that rotatably supports the transmission gear portion 62. The transmission gear portion 62 meshes with the inner peripheral gear portion 92 of the lock ring 9. The rotation operation unit 31 has the configuration described in the first embodiment, except that the rotation axis C2 of the rotation operation unit 31 coincides with the rotation axis C1 of the lock ring 9.

  Since the operation unit 3A includes the two transmission gear units 62 and 63, a configuration in which the rotation axis C2 of the rotation operation unit 31 coincides with the rotation axis C1 of the lock ring 9 is possible. Therefore, the rotation operation part 31 can be arrange | positioned in the radial direction center of the outer cover 11 (FIG. 2), and the external appearance of the outer cover 11 can be made axially symmetrical.

  The rotation angle of the rotation operation part 31 (FIG. 5) in Embodiment 2 should just be larger than 30 degree | times. The rotation angle of the rotation operation unit 31 depends on the number of first engaging portions 51, the number of second engaging portions 91, and the number of teeth of each of the transmission gear portions 61 and 62 and the inner peripheral gear portion 92. It can be set arbitrarily.

  Here, the operation unit 3A includes the two transmission gear units 62 and 63, but may include three or more transmission gear units. When the number of transmission gear parts is an even number, the rotation direction of the lock ring 9 is opposite to the rotation direction of the rotation operation part 31, and when the number of transmission gear parts is an odd number, the rotation direction of the lock ring 9 is The rotation direction of the rotation operation unit 31 is the same.

  As described above, in the second embodiment of the present invention, in addition to the effects described in the first embodiment, the operation unit 3A includes the plurality of transmission gear units 62 and 63. Can be made to coincide with the rotation axis C 1 of the lock ring 9. Thereby, the rotation operation part 31 can be arrange | positioned in the radial direction center of the outer cover 11. FIG. Therefore, the external appearance of the outer lid 11 can be made axially symmetrical to improve the design. In addition, some components of the outer lid 11 can be configured to be axially symmetric to facilitate processing.

Embodiment 3 FIG.
Next, a third embodiment of the present invention will be described. FIGS. 10A and 10B are schematic diagrams for explaining the operation of the operation unit 3B and the lock ring 9 in the third embodiment. FIG. 11 is a cross-sectional view of the operation unit 3B in the third embodiment.

  As shown in FIG. 11, the operation unit 3B according to the third embodiment includes a rotation operation unit 71, a shaft unit 72, and a connection unit 73, but does not include a transmission gear unit. The rotation operation unit 71 is held in a recess at the center in the radial direction of the top plate part 11a (FIG. 11) of the outer lid 11 so as to be rotatable about the rotation axis C1. The connecting portion 73 is a member that connects the rotation operation portion 71 and the lock ring 9. Here, the connecting portion 73 is formed as a lever member that connects the rotation operation portion 71 and the lock ring 9, but is not limited to such a shape, and the rotation operation portion 71 and the lock ring 9 are connected to each other. What is connected is sufficient.

  As shown in FIG. 10A, the lock ring 9 has a ring portion 90 and a second engaging portion 91 similar to those in the first embodiment, but the inner peripheral gear portion 92 (FIG. 1). I don't have it. That is, in the third embodiment, the rotation operation unit 71 and the lock ring 9 are configured to rotate integrally without using the transmission gear unit. Therefore, the rotation angle of the rotation operation unit 71 and the rotation angle of the lock ring 9 are the same.

  The pot-like container 5 has a first engaging portion 51 similar to that in the first embodiment. Here, an example in which the number of the first engaging portions 51 and the second engaging portions 91 is six as in the first embodiment will be described.

  10A and 10B, the six first engaging portions 51 of the pan-like container 5 are indicated by reference numerals 51a, 51b, 51c, 51d, 51e, and 51f in the clockwise direction in the drawing. Further, six second engaging portions 91 of the lock ring 9 are indicated by reference numerals 91a, 91b, 91c, 91d, 91e, 91f in the clockwise direction in the drawing.

  FIG. 10A shows the rotational positions of the lock ring 9 and the operation unit 3B before the rotation operation unit 71 is rotated after the outer lid 11 is closed. When the rotation operation portion 71 is rotated 30 degrees from the state shown in FIG. 10A, the second engagement portion 91a is axially aligned with the first engagement portion 51a disposed at a position adjacent to the circumferential direction. The pan-like container 5 and the outer lid 11 can be locked. However, at a small rotation angle of 30 degrees, it is difficult for the user to visually recognize the locked state.

  Therefore, in the third embodiment, as shown in FIG. 10B, the user rotates the rotation operation portion 71 by 90 degrees, and the second engagement portion 91a is adjacent to the first engagement portion 51a. The first engagement portion 51b is reached so as to overlap with the axial direction.

  Specifically, for example, a click mechanism 74 (FIG. 11) that locks the rotation of the rotation operation unit 71 every 90 degrees is provided on the inner peripheral surface of the recess of the outer lid 11 and the outer peripheral surface of the rotation operation unit 71. Accordingly, it is desirable to prompt the user to rotate the rotation operation unit 71 by 90 degrees.

  Moreover, the structure shown in FIG. 12 is also possible. That is, among the six second engaging portions 91a to 91f, one circumferential end portion (here, the clockwise end portion) of every other three second engaging portions 91a, 91c, 91e. And a protrusion 93 protruding upward. Further, of the six first engaging portions 51a to 51f, one circumferential end portion (here, the clockwise end portion) of every other three first engaging portions 51b, 51d, 51f. In addition, a protrusion 53 protruding downward is provided. The protrusion 53 and the protrusion 93 have heights (dimensions in the rotation axis direction) that can be brought into contact with each other when the lock ring 9 is rotated with the outer lid 11 closed.

  FIG. 13A shows the first engagement portion 51 and the second engagement portion 91 in a state (the state shown in FIG. 12) before the rotation operation portion 71 is rotated after the outer lid 11 is closed. FIG. In this figure, the rotation direction of the lock ring 9 is indicated by an arrow. In the state of FIG. 13A, the protrusion 53 of the first engaging portion 51 and the protrusion 93 of the second engaging portion 91 are separated from each other.

  When the rotation operation portion 71 is rotated 45 degrees from FIG. 13A (that is, the lock ring 9 is rotated 45 degrees), as shown in FIG. 13B, the second engagement portions 91a, 91c, 91e Each protrusion 93 comes into contact with each protrusion 53 of the first engaging portion 51b, 51d, 51f. As a result, the lock ring 9 cannot rotate any more, and the user can easily know that the lock has been completed.

  When cooking is started in this state, the lock ring 9 slightly moves upward due to the pressure increase inside the pan-like container 5, and the second engagement portion 91 is pressed by the first engagement portion 51. . At this time, since the second engaging portions 91a, 91c, and 91e have the protrusions 93 that protrude upward, the protrusions 93 are pressed by the first engaging portions 51b, 51d, and 51f. The stress concentrates on the protrusion 93.

  Therefore, it is desirable to provide a protrusion accommodating portion 54 (FIG. 13) for accommodating the protrusion 93 adjacent to the protrusion 53 of the first engaging portions 51b, 51d, 51f. As a result, the six second engaging portions 91 are pressed against the first engaging portion 51 as a whole, and stress concentration can be avoided. The protrusion accommodating portion 54 may be a through hole or a recess.

  Here, since the number of the first engaging portions 51 and the second engaging portions 91 is six, the rotational position of the pan-like container 5 with respect to the housing 1 (in the rotational direction around the rotational axis C1). When the (position) changes by 180 degrees, the positional relationship between the projection 53 and the projection 93 does not become the positional relationship shown in FIG. Therefore, the user needs to install in the housing 1 so that the direction of the pot-like container 5 is constant. On the other hand, if the number of the first engaging portions 51 and the second engaging portions 91 is eight, the locking operation described above is possible even when the pan-like container 5 is installed at a position rotated 180 degrees. Therefore, user convenience is improved.

  Here, the rotation angle of the rotation operation unit 71 is 90 degrees, but the rotation angle of the rotation operation unit 31 may be larger than 30 degrees. The rotation angle of the rotation operation unit 31 can be set according to the number of first engaging portions 51 and the number of second engaging portions 91.

  For example, when the number of the first engaging portions 51 and the number of the second engaging portions 91 are both two (that is, when they are arranged at intervals of 180 degrees), the rotational operation section 71 is moved to 90 degrees. By rotating, the first engaging portion 51 and the second engaging portion 91 can be engaged.

  For example, when the number of the first engaging portions 51 and the number of the second engaging portions 91 are both four (that is, when they are arranged at intervals of 90 degrees), the rotational operation section 71 is set to 45 degrees. By rotating, the first engaging portion 51 and the second engaging portion 91 can be engaged.

  As described above, in the third embodiment of the present invention, in addition to the effects described in the first embodiment, the rotation operation unit 31 and the lock ring 9 are integrally rotated without providing the transmission gear unit. Since it was set as the structure, the structure inside the outer cover 11 can be simplified. Therefore, the number of parts can be reduced and the manufacturing cost can be suppressed.

  The preferred embodiments of the present invention have been specifically described above. However, the present invention is not limited to the above-described embodiments, and various improvements or modifications are made without departing from the gist of the present invention. be able to.

  For example, this invention can be applied not only to a pressure rice cooker but also to other cookers as long as it has a container and a lid.

DESCRIPTION OF SYMBOLS 1 Case, 2 Container cover, 3 Operation part, 31 Rotation operation part, 32 Shaft part, 33 Gear part, 4 Container temperature sensor, 4a Compression spring, 5 Pan-shaped container (container), 50 Flange, 51 1st engagement Joint part, 52 Notch, 6 Handle part, 7 Inner lid, 8 Packing, 9 Lock ring, 90 Ring part, 91 Second engagement part, 92 Inner peripheral gear part, 10 Heating coil, 11 Outer cover (lid body) ), 12 evaporation cartridge, 13 steam port, 14 steam discharge valve, 15 drive section, 16 lid temperature sensor, 17 operation panel (operation / display section), 20 control section, 21 power supply, 22 inverter section.

The cooker of the present invention includes a container having an opening, a lid body that covers the container in an openable / closable manner, a ring portion that is rotatably provided inside the lid body, and an inner peripheral gear that is provided on the inner periphery of the ring portion. and a section, and a lock ring for locking the container and lid, and a rotating operation portion from the outer portion is rotationally operated, rotated by rotation of the rotational operation portion, a transmission gear that meshes with the inner peripheral gear portion of the lock ring Part. The inner peripheral gear portion and the transmission gear portion mesh with each other inside the lid body . The lock ring locks the container and the lid when the rotation operation unit is rotated more than 30 degrees.

Claims (17)

A container having an opening;
A lid that covers the container in an openable and closable manner;
A lock portion for locking the container and the lid;
A rotation operation unit connected to the lock unit and operated to rotate from the outside,
The cooker characterized in that the lock unit locks the container and the lid when the rotation operation unit is rotated more than 30 degrees. Further comprising an inner lid attached to the lid,
The cooker according to claim 1, wherein the lock unit includes a lock ring provided so as to sandwich the inner lid and a part of the container.   The cooking device according to claim 1 or 2, wherein the rotation operation unit is provided on an upper surface of the lid.   The cooker according to any one of claims 1 to 3, wherein a rotation angle of the rotation operation unit is 45 degrees or more. The locking portion is rotatable relative to the container;
The cooker according to any one of claims 1 to 4, wherein the lock unit is rotated by rotation of the rotation operation unit to lock the container and the lid.   The cooking device according to claim 5, wherein a rotation angle of the rotation operation unit is larger than a rotation angle of the lock unit.   The cooker according to claim 5 or 6, wherein a rotation angle of the rotation operation unit is the same as a rotation angle of the lock unit.   The cooker according to claim 7, wherein the lock unit is configured to rotate integrally with the rotation operation unit.   The cooker according to any one of claims 5 to 8, wherein a rotation axis of the rotation operation unit and a rotation axis of the lock unit are parallel to each other and eccentric.   The cooker according to any one of claims 5 to 8, wherein a rotation axis of the rotation operation unit and a rotation axis of the lock unit coincide with each other. The container has a first engaging portion along the periphery of the opening;
The cooker according to any one of claims 5 to 10, wherein the lock portion includes a second engagement portion that engages with the first engagement portion of the container. When the first engagement portion and the second engagement portion overlap each other in the direction of the rotation axis of the lock portion, the container and the lid body are locked,
The lock between the container and the lid is released when the first engagement portion and the second engagement portion do not overlap each other in the direction of the rotation axis of the lock portion. The cooking device according to claim 11.   The cooker according to claim 11 or 12, wherein the first engaging portion has an end in a circumferential direction of the container formed in a curved shape.   The cooker according to any one of claims 5 to 13, wherein the lock portion is an annular member extending along an outer periphery of the container. An inner peripheral gear portion is provided on the inner periphery of the lock portion,
The cooker according to claim 14, further comprising at least one transmission gear portion that rotates integrally with the rotation operation portion and meshes with the inner peripheral gear portion of the lock portion.   The cooker according to any one of claims 1 to 15, wherein the rotation operation unit includes a knob portion extending linearly.   The cooker according to claim 2, wherein the lock ring is movably held on the lid.

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