JP5854866B2 - Cooker - Google Patents

Description

  TECHNICAL FIELD The present invention relates to a rice cooker that can store a container for storing cooked food in a main body, and more particularly to a rice cooker including a weight detection device.

  2. Description of the Related Art Conventionally, as a rice cooker equipped with a weight detection device, a weight detection device is provided in the lower part of a container housed in the main body so as to detect the weight of the cooked rice and the container (for example, a patent) Reference 1).

JP-A-2-305513 (FIG. 2)

  According to the technique described in Patent Document 1, the weight of the container containing the rice to be cooked is distorted by applying a load via a heater, and the strain spring detects the amount of strain of the leaf spring. The weight can be detected.

However, in a normal rice cooker, the lid is provided with a sealing member for sealing the outer periphery of the container by applying pressure so that the cooked rice does not blow out from the container containing the cooked rice during cooking. In the structure which detects the weight of the container in which the to-be-cooked object entered like the rice cooker of literature 1, since the pressure to the container by a sealing material is applied also to a weight detection apparatus, normal weight detection cannot be performed. There was a big problem.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a rice cooker that can accurately detect a weight with a simple structure and can prevent damage to the weight detection device.

A heating cooker according to the present invention that solves the problem is a weight that detects the weight of a main body, a container that is housed in and out of the main body, and contains a cooked rice, and a main body and a container that contains the cooked rice. A movable leg portion that protrudes from the bottom surface and is configured to be movable up and down, and the weight detection device detects the weight within the range of the movable range of the movable leg portion. The load transmission means, the weight detection section, and the elastic body are provided, and the elastic body urges the load transmission means in contact with the weight detection section in the direction in which a load is applied, so that a predetermined load is applied to the weight detection section. The load transmitting means and the elastic body are provided in the movable leg portion, and the load transmitting means is fixed to the movable leg portion and is movable up and down in conjunction with the vertical movement of the movable leg portion. To prevent the transmission means from tilting up and down Cooker, characterized in that a kinematic guide mechanism.

  According to the present invention, the movable leg portion that protrudes from the bottom surface and is configured to be movable up and down is provided on the bottom surface of the main body, and the weight detection device detects the weight within the range of the vertical movable region of the movable leg portion. It is possible to provide a rice cooker that can accurately detect the weight without being affected by the pressure of the sealing material on the container.

It is a perspective view of the state where the lid of the rice cooker concerning Embodiment 1 of the present invention was opened. It is the bottom view seen from the bottom face side of the rice cooker which concerns on Embodiment 1 of this invention. It is sectional drawing of the state which closed the cover body of the approximate center part seen from the side of the rice cooker which concerns on Embodiment 1 of this invention. (A) Sectional drawing of the movable leg part seen from the side of the rice cooker which concerns on Embodiment 1 of this invention, (b) It is an enlarged view of the movable leg part of Fig.4 (a). (A) Sectional drawing of the movable leg part seen from the back side of the rice cooker which concerns on Embodiment 1 of this invention, (b) It is an enlarged view of the movable leg part of Fig.5 (a). It is a disassembled perspective view of the movable leg part containing the weight detection apparatus of the rice cooker which concerns on Embodiment 1 of this invention. (A) Sectional drawing of a movable leg part including the weight detection apparatus which shows the normal load state of the rice cooker which concerns on Embodiment 1 of this invention, (b) Overload state of the rice cooker which concerns on Embodiment 1 of this invention It is sectional drawing of the movable leg part containing the weight detection apparatus which shows.

Embodiment 1
(Overall configuration)
1 is a perspective view of a rice cooker according to Embodiment 1 of the present invention with the lid opened, and FIG. 2 is a bottom view of the rice cooker according to Embodiment 1 of the present invention as seen from the bottom side. FIG. 3 is a cross-sectional view of a state in which the lid at the substantially central portion viewed from the side of the rice cooker according to Embodiment 1 of the present invention is closed. The schematic configuration of the rice cooker according to Embodiment 1 of the present invention will be described with reference to FIGS.

  1, reference numeral 100 denotes a rice cooker according to Embodiment 1 of the present invention, which is shown in FIG. 3 at a main body 1 for storing a container 2 for storing water and rice that are to-be-cooked rice, and a rear end portion of the main body 1. The lid 3 is attached to the hinge shaft 25 so as to be opened and closed by a hinge spring 26 for biasing in the opening direction, and the steam recovery tank 6 is provided on the front side of the main body 1.

  The main body 1, the lid 3 and the vapor recovery tank 6 are each made of a resin material according to the application, and are formed by, for example, resin molding, but are not necessarily limited to the resin material.

  An inner lid 4 made of metal, for example, is detachably provided on the lid 3, and a sealing material made of, for example, a silicon material is brought into contact with the container 2 when the lid 3 is closed on the outer periphery of the inner lid 4. 5 is attached. In the closed state of the lid 3, the sealing material 5 comes into contact with the outer periphery of the container 2 and is sealed, and the container 2 is covered with the inner lid 4. The lid 3 is closed when a latch engaging portion 3b provided on the lid 3 is engaged with a latch receiving portion 1b provided on the main body 1. When the release button 3c is pushed from the closed state, the latch engaging portion 3b provided on the lid body 3 moves in a direction to release the engagement, the engagement is released, and the lid body 3 is released.

Further, the lid 3 is provided with a steam discharge port 3a for collecting and discharging steam generated during rice cooking by a steam conduit (not shown) provided in the lid 3, and when the lid 3 is closed. The steam discharged from the steam discharge port 3a is taken into the steam recovery tank 6 from a steam recovery port 6b provided in a tank lid 6a that covers the upper part of the steam recovery tank 6.

  The tank lid 6a is provided with a steam conduit 6c for connecting the steam taken from the steam recovery port 6b into the steam recovery tank 6 so as to be connected to the steam recovery port 6b. Has been.

  Cooling water is poured into the steam recovery tank 6, and the other end (not shown) not connected to the steam recovery port 6b of the steam conduit 6c extending downward is the cooling water. Is submerged. Then, the steam taken in from the steam recovery port 6a is condensed and recovered. Thereby, it becomes the structure which collect | recovers all the vapor | steam generate | occur | produced at the time of rice cooking, and does not discharge | evaporate steam out of the rice cooker 100.

  As shown in FIG. 3, the lid 3 is provided with an operation unit 11 for operating the rice cooker 100 provided with various operation keys (not shown) such as rice cooking, heat insulation, and reservation on the upper part near the front surface. The display unit 12 and the operation board 21 for displaying the operation result are provided in the internal space of the lid 3. On the operation board 21, a switch 21a for inputting an operation key (not shown) and a display means 12 are mounted. The contents displayed on the display means 12 can be visually recognized from the transparent display window 3 d provided on the upper surface of the lid 3.

  In the main body 1, as shown in FIG. 3, induction heating coils 23a, 23b and 23c which are heating means for heating the container 2 and cooking rice are provided. In the present embodiment, an induction heating coil is illustrated as a heating unit, but the present invention is not limited to this, and a radiant heating unit such as a sheathed heater may be used.

A control board 22 is provided in the space on the rear (back) side of the main body 1. On the control board 22, a power supply circuit (not shown), a microcomputer, an inverter circuit for supplying a high-frequency current to the heating coil based on the control of the microcomputer, a memory, and the like are mounted. The memory stores a control program for operating the microcomputer in response to the operation of the key switch described above.

  Below the control board 22, cooling is performed to take in outside air from an air inlet 10 provided in the bottom plate 7 of the rice cooker 100, which will be described later, and to cool the control board 22 and the induction heating coils 23a, 23b, 23c. A fan 24 is provided. The cooling fan 24 operates to start cooling when heating is started.

  As shown in FIG. 2, a bottom plate 7 made of a resin material and formed by resin molding is provided on the bottom surface of the rice cooker 100, and a winding type power cord 13 is provided. In addition, an intake port 10 is provided for taking in the outside air of the cooling fan 24 described above.

The bottom plate 7 is provided with three fixed legs 9a, 9b, 9c and two movable legs 8a, 8b for installing the rice cooker 100. The three fixed legs 9a, 9b and 9c are forward of the center of gravity of the rice cooker 100, the fixed leg 9c is substantially centered in the width direction, and the fixed legs 9a and 9b are formed by integral resin molding with the bottom plate 7 substantially symmetrically from the center to the left and right sides. Is provided.

  The fixed leg 9c provided in the center is formed to be approximately 0.5 mm longer than the fixed legs 9a and 9b, and the left and right legs have substantially the same length as the difference in length from the center leg. An elastic rubber member 14 is attached.

  The two movable legs 8a and 8b are arranged symmetrically in the width direction from the center of the bottom plate 7 behind the center of gravity of the rice cooker 100, and are attached to the bottom plate 7 so as to be movable in the vertical direction. In a normal installation state, the movable leg 8a is balanced at three points of the fixed leg 9c and the movable legs 8a and 8b which are formed approximately 0.5 mm longer than the fixed legs 9a and 9b and are provided at the front center. , 8b is surely loaded. When the front side is tilted to the left or right by key operation or the like, the fixed legs 9a and 9b are supported to prevent the main body from wobbling.

  In the movable legs 8a and 8b, the total weight applied to the rice cooker 100 such as the weight of the rice cooker 100 and the water contained in the container 2 or the rice cooked rice or the cooling water poured into the steam recovery tank 6 is stored. A weight detection device for detection is provided.

(Configuration of weight detector)
Next, the configuration of the movable leg portion including the weight detection device will be described with reference to FIGS. 4 (a), 4 (b), 5 (a), 5 (b), and 6. FIG.
Fig.4 (a) is sectional drawing of the movable leg part seen from the side of the rice cooker which concerns on Embodiment 1 of this invention, FIG.4 (b) is an expansion of the movable leg part of Fig.4 (a). 5A is a cross-sectional view of the movable leg portion viewed from the back side of the rice cooker according to Embodiment 1 of the present invention, and FIG. 5B is a view of the movable leg portion of FIG. 6 is an exploded perspective view of the movable leg portion including the weight detection device for the rice cooker according to Embodiment 1 of the present invention.

  The movable leg 8a (8b) is provided behind the rice cooker 100 as shown in FIG. The movable legs 8a and 8b are provided symmetrically as described above, and the internal structure is also symmetrical as shown in FIG. 5 (a).

  4B and 5B are both cross-sectional views of the movable leg 8a. The movable leg 8b will be described with reference to FIGS. 4B and 5B based on the drawing of the movable leg 8a. Since the internal structure is the same, the description of the movable leg 8b is omitted from the description of the movable leg 8a.

  As shown in FIGS. 4B, 5B and 6, the movable leg 8a is provided with a leg 31 made of a resin material and formed by resin molding. Inside the leg 31, the load transmission means 35 is fixed to the claw portion 31 a by press fitting. As shown in FIG. 6, the load transmitting means 35 is substantially U-shaped and is made of a metal material.

  The load transmitting means 35 is made of a resin material and formed by resin molding to hold an elastic body 32 such as a helical spring that urges a weight detecting means (strain sensor) 40a, which will be described later, in a direction to apply an initial load. The elastic body holding member b34 is attached.

  The elastic body 32 is sandwiched and held from above and below by an elastic body holding member a33 made of resin material formed by resin molding attached to a fixing plate 37 made of a metal material and the above-mentioned elastic body holding member b34.

  As shown in FIG. 5B, the weight plate 40 is attached to the fixing plate 37 via an insulating sheet 39 having electrical insulation. As shown in FIGS. 5B and 6, weight detection means (distortion sensor) 40 a and signal amplification means 40 b are mounted on the substrate 40. A waterproof cover 42 is attached to the fixing plate 37 so as to cover the weight detection substrate 40 so that moisture or the like generated due to some factor does not drip onto the weight detection substrate 40.

  As shown in FIG. 5 (b), the movable legs 8a and 8b are held by a holding plate 38 made of a resin material and a fixed plate 37 fixed with screws (not shown) with the bottom plate 7 interposed therebetween. Installed as follows.

  Since the resistance value of the weight detection means (strain sensor) 40a changes due to the strain caused by the applied weight, the change in the resistance value is read by reading the change in the output voltage value when a certain voltage is applied. The weight is detected by converting to a weight. The signal amplifying means 40b amplifies the signal detected and output by the weight detecting means (strain sensor) 40a and sends it to a microcomputer (not shown).

  Since the weight detecting means (strain sensor) 40a and the signal amplifying means 40b are mounted in a close position on the same weight detecting substrate 40, the signal can be stably transferred without being influenced by external noise.

  Although the weight is detected when the movable leg 8a moves up and down, it is necessary to suppress the swing and fluctuation of the movable up and down in order to erroneously detect that there is a shake or wobble, or to damage the weight detection means (distortion sensor) 40a. is there. In order to suppress shaking and wobbling when the leg 31 is movable up and down, a leg movable guide part 38 a (second movable guide means) for guiding the outer periphery of the leg 31 is provided in the holding member 38.

Further, since the load transmission means 35 is fixed to the leg 31 by press-fitting, the load transmission means 35 moves up and down together with the vertical movement of the leg 31, so that the load transmission that suppresses shaking and wobbling when the load transmission means 35 is movable up and down. Means movable guide member 36 (first movable guide means) is provided.

The load transmission means movable guide member 36 (first movable guide means) is made of a resin material and formed by resin molding, and is provided on the fixed plate 37 with the load transmission means 35 sandwiched in the plate thickness direction as shown in FIG. It is fixed to the guide fixing hole 37a.

  Since the load has a load measurement error depending on the position of the load applied to the weight detection means (strain sensor) 40a by the load transmission means 35, the leg movable guide portion 38a for regulating the vertical movement of the leg 31 in the vertical direction. By providing two movable guide means of (second movable guide means) and load transmission means movable guide member 36 (first movable guide means) that suppresses shaking and wobbling when the load transmission means 35 is vertically movable, The load transmission means 35 prevents the displacement of the load on the weight detection means (strain sensor) 40a.

  As described above, the leg 31 and the load transmission means 35 move up and down in a state where suppression of shaking and wobbling is suppressed, and the weight is detected by the up and down movement. As shown in FIG. 5 (b), the load transmitting means 35 fixed in the leg 31 is attached to the upper surface of the fixed plate 37 via the insulating sheet 39 by the urging force of the elastic body 32. An initial load is applied to the weight detection means (strain sensor) 40a mounted on the through a protective sheet 41. The protective sheet 41 is intended to prevent the weight detection means (strain sensor) 40a from being affected by torsion or the like caused by the manufacturing factors of the load transmission means 35.

(Operation of weight detector)
Next, the operation of the movable leg portion including the weight detection device will be described with reference to FIGS.
FIG. 7A is a cross-sectional view of the movable leg portion including the weight detection device showing the normal load state of the rice cooker according to Embodiment 1 of the present invention, and FIG. 7B is related to Embodiment 1 of the present invention. It is sectional drawing of the movable leg part containing the weight detection apparatus which shows the overload state of a rice cooker.

  With the movable leg 8a and the movable leg 8b including the weight detection device configured as described above, the weight of the rice cooker 100 as a whole and the weight applied to the rice cooker 100 such as water or rice to be cooked in the container 2 The total of is to be detected.

Here, the self-weight of the rice cooker 100 is the weight of the rice cooker 100 with the fixed leg 9c as a fulcrum, and includes all the weights of the main body 1, the lid 3, the container 2, and the steam recovery tank 6. The weight applied to the rice cooker 100 is a weight applied by the fixed leg 9c as a fulcrum other than the own weight of the rice cooker 100, and was poured into the water contained in the container 2 or the cooked rice of the rice or the steam recovery tank 6. This is the total weight of cooling water.

In addition, since the own weight of the rice cooker 100 is determined, and a predetermined amount of cooling water is poured into the steam recovery tank 6, the total weight is stored as data in the above-described memory (not shown). By using the weight of this data as a reference, only the cooked rice can be detected accurately.

As shown in FIG. 7A, the weight detection means (strain sensor) 40a mounted on the weight detection substrate 40 is disposed so as to be sandwiched between the fixed plate 37 and the load transmission means 35 formed in a U-shape. The elastic body 32 is disposed in a contracted state between the surface opposite to the surface on which the weight detection means (strain sensor) 40a is attached and the load transmission means 35.

A load is applied to the load transmission means 35 by the reaction force due to the contraction, and the load is applied to the weight detection means (strain sensor) 40a as an initial load. The force for contracting the elastic body 32 at this time is set so that the amount of contraction does not change even when a total load of the weight of the rice cooker 100 and the weight applied to the rice cooker 100 is applied.

In the first embodiment of the present invention, the weight is detected by the two movable legs 8a and 8b, respectively, so that the total weight of the cooker 100's own weight and the weight applied to the rice cooker 100 only on one side of the movable legs 8a and 8b. Even if the applied load is applied, it is set so as not to shrink.

  A load is subtracted from the reaction force at the initial load by the elastic body 32 to the weight detection means (strain sensor) 40a by the total weight of the weight of the rice cooker 100 and the weight applied to the rice cooker 100. Load of two points from the initial load, for example, the load applied when only the own weight of the rice cooker 100 and the output value when 2 kg is added to the own weight of the rice cooker 100 are read as data, and the voltage change amount for 2 kg Based on this, the value of a certain voltage change can be converted into a weight. That is, if the voltage value when only the own weight of the rice cooker 100 is added is 0 g, the weight of the cooked rice can be calculated by the voltage change due to the weight added therefrom.

When a rice cooking key (not shown) is turned on, the weight detection means (distortion sensor) 40a generates a signal corresponding to the amount of distortion distorted by the pressing force of the rice cooking key applied to the movable legs 8a and 8b, that is, the movable legs 8a and 8b. By adding the respective weights obtained by the respective weight detection means (strain sensors) 40a provided, a signal corresponding to the total weight is generated with the added value of the weight as the total weight of the current rice cooker 100. And it inputs into the microcomputer of the control board 22 (refer FIG. 3), converts into the gross weight of the present rice cooker 100 based on the signal inputted into the microcomputer, and is stored as data in the memory from the converted gross weight The weight of the cooked rice in the container 2 is calculated by subtracting the own weight of the rice cooker 100.

  The movable leg 8a, 8b is subjected to a load greater than the load due to the contraction of the elastic body 32 beyond the normal load range, that is, the weight detectable range within the movable range of the movable legs 8a, 8b. When the pushing force increases, the elastic body 32 contracts from its initial length, so that the movable legs 8a and 8b move beyond the normal load detection range and the rice cooker 100 sinks.

When the rice cooker 100 sinks, as shown in FIG. 7B, the load transmission means 35 is separated from the weight detection means (strain sensor) 40a, and the space Y2 between the load transmission means 35 and the weight detection means (strain sensor) 40a. Therefore, a load more than necessary is not applied to the weight detection means (strain sensor) 40a, and breakage due to overload can be prevented. The same applies to impact loads such as dropping the main body.

Even if the rice cooker 100 sinks due to an overload, if the leg 31 moves to a position where it comes into contact with the fixed plate 37, the further movement of the leg 31 is restricted by the fixed plate 37. The movable range of the leg 31 is set within 1 mm (space Y1 shown in FIG. 7A), for example. Thereby, the weight detection means (distortion sensor) 40a is not damaged by the reaction of the elastic body 32 due to the main body dropping or the like.

In the first embodiment of the present invention, there are two movable legs including the weight detection device. However, the present invention is not limited to this, and the number of movable legs including the weight detection device can be set as appropriate.
Further, in the first embodiment of the present invention, the weight of the cooling water poured into the steam recovery tank is also detected, but the weight of the cooked rice is determined by arranging the fixed leg near the approximate center of gravity of the steam recovery tank. The measurement may not be affected by the change in the weight of the cooling water in the steam recovery tank.
Furthermore, in Embodiment 1 of the present invention, the weight of the cooked rice is measured using a strain sensor as the weight detection means, but instead of this, a pressure sensor or a capacitance sensor may be used. .
Then, in Embodiment 1 of the present invention, it is described that the present invention is applied to a rice cooker having a steam recovery tank that does not discharge steam to the rice cooker at the time of rice cooking. Is naturally applicable.

  As mentioned above, according to the rice cooker of Embodiment 1 of this invention, a compact weight detection apparatus can be comprised by arrange | positioning a load transmission means and an elastic body inside a leg, It is possible to provide a weight detection device without increasing the size.

In addition, since the load transmission means is separated from the weight detection means (strain sensor) when an overload is applied, the weight detection means (strain sensor) due to overload is not applied to the weight detection means (strain sensor). Can prevent damage and improve product reliability.

Furthermore, since the weight detection means (distortion sensor) is provided with a metal fixed plate sandwiched between movable legs provided on the bottom plate, stable weight detection can be achieved without being affected by external noise.

  DESCRIPTION OF SYMBOLS 1 Main body, 1b Latch receiving part, 2 Container, 3 Cover body, 3a Steam discharge port, 3b Latch engaging part, 3c Release button, 3d Display window, 4 Inner lid, 4a, 5 Sealing material, 6 Steam recovery tank, 6a tank Lid, 6b Steam recovery port, 6c Steam conduit, 7 Bottom plate, 8a Movable leg, 8b Movable leg, 9a Fixed leg, 9b Fixed leg, 9c Fixed leg, 10 Intake port, 11 Operation part, 12 Display means, 13 Power supply Code, 14 Rubber member, 21 Operation board, 21a switch, 22 Control board, 23a Induction heating coil, 23b Induction heating coil, 23c Induction heating coil, 24 Cooling fan, 25 Hinge shaft, 26 Hinge spring, 31 Leg, 31a Claw , 32 Elastic body, 33 Elastic body holding member a, 34 Elastic body holding member b, 35 Load transmission means, 36 Load transmission means movable guide Material, 37 fixing plate, 37a guide fixing hole, 38 holding member, 38a leg movable guide portion, 39 insulating sheet, 40 weight detection substrate, 40a weight detection means (distortion sensor), 40b signal amplification means, 41 protection sheet, 42 Waterproof cover, 100 rice cooker, Y1 Space between the leg 31 and the fixing plate 37, Y2 Space between the load transmission means 35 and the weight detection means (distortion sensor) 40a.

Claims (9)

The body,
A container that is stored in the main body so as to be freely put in and out, and that contains the cooked rice,
A weight detection device for detecting the weight of the main body and the container for storing the cooked rice,
On the bottom surface of the main body, a movable leg portion that protrudes from the bottom surface and is configured to be movable up and down is provided.
The weight detection device detects weight within the range of the vertically movable region of the movable leg, and includes a load transmission means, a weight detection unit, and an elastic body,
The load transmitting means is urged by the elastic body in a direction in which a load is applied by contacting the weight detection section, and a predetermined load is applied to the weight detection section. The load transmission means and the elastic body Is provided in the movable leg,
The load transmitting means is
It is fixed to the movable leg, and is movable up and down in conjunction with the up and down movement of the movable leg.
A rice cooker comprising a movable guide mechanism for preventing the load transmitting means from tilting up and down . The movable guide mechanism includes a first movable guide means for guiding the load transmission means directly, according to claim 1, characterized in that a second movable guide means for guiding the outer periphery of the movable legs Rice cooker. 3. The rice cooker according to claim 1, wherein the weight detection unit is configured by arranging a weight detection unit and a signal amplification unit for amplifying a signal from the weight detection unit on the same substrate. vessel. 4. The subordinate according to claim 3, wherein the substrate constituting the weight detection unit is disposed on a metal plate, and the metal plate holds the first movable guide means. rice cooker. The body,
A container that is stored in the main body so as to be freely put in and out, and that contains the cooked rice,
A weight detection device for detecting the weight of the main body and the container for storing the cooked rice,
On the bottom surface of the main body, a movable leg portion that protrudes from the bottom surface and is configured to be movable up and down is provided.
The weight detection device detects weight within the range of the vertically movable region of the movable leg, and includes a load transmission means, a weight detection unit, and an elastic body,
The load transmitting means is urged by the elastic body in a direction in which a load is applied by contacting the weight detection section, and a predetermined load is applied to the weight detection section. The load transmission means and the elastic body Is provided in the movable leg,
The weight detection area range of the weight detection device is set to be smaller than the upper and lower movable area range of the movable leg portion, and the load transmission is performed when the movable leg portion moves beyond the weight detection area range of the weight detection device. The means is a rice cooker characterized in that it is separated from the weight detection unit and no load is applied . The body,
A container that is stored in the main body so as to be freely put in and out, and that contains the cooked rice,
A weight detection device for detecting the weight of the main body and the container for storing the cooked rice,
Wherein the bottom surface of the main body, a movable leg that is configured to be able on the projecting from the bottom downward movement is provided,
The weight detection device detects the weight within the range of the vertically movable region of the movable leg ,
A fixing plate attached to the bottom of the main body;
An elastic body attached between the lower surface of the fixed plate and the movable leg portion and sandwiched between the fixed plate and the movable leg portion;
A weight detector fixed to the upper surface of the fixed plate;
One end side is fixed to the movable leg portion, and the other end side has a load transmitting means that is bent upwardly from the movable leg portion, and
The weight detector is
It is arranged so as to be sandwiched between the fixed plate and the other end side of the load transmission means,
The other end side of the load transmitting means is
The rice cooker characterized by being urged | biased by the said weight detection part side with the said elastic body . The rice cooker according to claim 5 or 6, wherein the load transmitting means is fixed to the movable leg portion and is movable up and down in conjunction with the vertical movement of the movable leg portion. 8. The weight detection unit according to claim 5 , wherein the weight detection unit and a signal amplification unit for amplifying a signal from the weight detection unit are arranged on the same substrate . Item 1. Rice cooker. The rice cooker according to any one of claims 1 to 8, wherein a plurality of the movable leg portions are provided, and the weight detection device is provided for each of the plurality of movable leg portions.

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