JPH0632013Y2 - rice cooker - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial field of application) The present invention relates to a rice cooker equipped with a weight detection mechanism for weighing the contents contained in a container.

(Prior Art) In a conventional rice cooker, a user generally takes the following steps before starting to cook rice. That is, first weigh rice as desired in a measuring cup, wash the weighed rice, store the rice in a container, and according to the amount of rice, adjust the water according to the water level line provided on the inner surface of the container. After storing, the container is stored in the main body and then rice cooking is started. However, in such a conventional rice cooker, when the measuring cup necessary for measuring rice is lost, the amount of rice cannot be accurately measured, and as a result, the amount of rice does not match the amount of water. There was a fear that good food could not be obtained. In addition, depending on the amount of rice, the amount of rice weighed may be forgotten by the time the water is stored, and in this case as well, there was the same problem as described above.

In order to solve such a problem, for example, the actual exploitation sho 63-
A rice cooker provided with a weight detection mechanism as disclosed in Japanese Patent No. 129521 has been proposed. This rice cooker is the fifth
As shown in the figure, the container body 1 is composed of an outer case 3 and an inner case 4 which are connected by an upper frame body 2. A container 5 is accommodated in the inner case 4, and an upper part of the container body 1 is provided. A lid 6 is pivotally installed so that it can be opened and closed. A weight sensor 7 is provided on the inner bottom portion of the container body 1, and the weight sensor 7 is provided on a rod 10 that is integrally projecting with a pedestal 9 that is provided so as to project upward from a through hole 8 formed in the center of the inner case 4 and is vertically movable. 7 is connected and the weight of the container 5 when the container 5 is placed on the pedestal 9 is applied to the weight sensor 7 via the rod 10, and the weight detection signal output from the weight sensor 7 causes the microcomputer to detect the container 5 It is calculated by calculating the amount of rice inside.

(Problems to be Solved by the Invention) Since the conventional rice cooker is configured to detect the weight of the container 5 containing rice, when the container 5 is placed on the pedestal 9, the container 5 is accommodated. It moves up and down with respect to the inner case 4 depending on the amount of rice, and when the amount of rice is large, it sinks deeply in the inner case 4, while when the amount of rice is small, it sinks shallowly. For this reason,
In this type of rice cooker, the lid 6 is closed by pushing the upper part of the container 5 downward by the lid 6, but when the amount of rice is small, the upper end of the container 5 is too much protruding from the upper frame body 2 and the lid is closed. 6 becomes difficult to close, and there is a risk of failure or deformation if forcedly pressed. In addition, water droplets that have adhered to the outer surface of the container 5 when washing the rice etc.
The weight sensor 7
There was also a problem that it was easy to break down.

On the other hand, in Japanese Unexamined Patent Publication No. 61-119212, the lower body of the outer pot that constitutes the main body of the vessel is provided by a spring so as to be movable up and down, and the weight detection device is arranged at the bottom of the outer pot. A rice cooker having a structure capable of protecting the detection device from the influence of water or the like is disclosed. However, this rice cooker is divided into an upper body to which the outer pot is fixed and a lower body that can be moved up and down by a spring, and as the lid is opened and closed, only the inner pot, which is the container, moves up and down. Since it has a moving structure, it is not possible to prevent the inner pot from rising when the amount of rice is small.

The present invention has been made based on the above problem, and provides a rice cooker that can easily open and close the lid regardless of the amount of contents stored and can protect the weight sensor from the influence of water. It is intended to be provided.

[Structure of the Invention] (Means for Solving the Problem) The present invention provides a leg portion 29, a container 18, and a container 18 for accommodating the container 18 and vertically movable via a bullet 32 on the leg portion 29. Container
A container body 11 having an inner case 14 that abuts the upper part of the container formed to the upper part of 18, a container 18 housed in the container body 11 and moved up and down together with the container body 11, and the container body 11
Of the container main body 11 including the container 18 provided between the bottom portion and the leg portion 29, the weight detection means 33, and the container obtained based on the weight detected by the weight detection means 33. Display means 37 for displaying the weight of the contents stored in 18
It is a rice cooker equipped with and.

(Operation) With the above configuration, first, the container body 11 before containing the contents
The weight of the container body 11 containing the contents is detected, and the weight of the contents is calculated from these weights and displayed on the display means 37. At this time, the container 18 does not move up and down with respect to the container body 11, and the upper end of the container 18 is always placed in a fixed position on the container body 11.

Embodiment An embodiment of the present invention will be described in detail below with reference to the drawings.

In FIG. 1, 11 is a main body, which is an upper frame 12
It is composed of an outer case 13 and an inner case 14 that are joined together by means of a cylindrical recess that opens downward at the lower part of the outer case 13.
An outer shell portion 16 forming 15 and a bottom plate 17 are connected in series. Further, the container 18 is accommodated in the inner case 14, and the container body 11 is formed up to the upper part of the container 18, and the upper part of the container 18 is in contact with the inner case 14. Reference numeral 19 denotes a lid provided on the upper portion of the container body 11 so as to be opened and closed by a hinge portion 20 and fixed by a clamp portion 21, and a lid heater 23 is provided on an upper surface of a lower surface plate 22 attached to a lower surface of the lid 19. Is provided. An inner lid 24 elastically closes the upper opening of the container 18. Reference numeral 25 denotes a heat-sensitive portion provided in the center of the bottom portion of the inner case 14, which has a temperature sensor 26 inside and the upper surface of which contacts the lower surface of the container 18. 27 is a rice cooking heater provided on the inner bottom of the inner case 14, and 28 is a heat retaining heater provided on the outer surface of the inner case 14.

Reference numeral 29 denotes a cylindrical leg portion housed in the recess 15 below the container body 11. The outer plate (16) is composed of a side plate (30) and an upper plate (31) having an outer surface having a diameter smaller than that of the inner side surface of the outer plate (16). Between the upper plate 31 of the leg portion 29 and the bottom plate 17 of the vessel body 11, a plurality of springs 32, which are ammunition, are arranged at appropriate intervals, and the spring body 32 is used to connect the vessel body 11 to the leg portion 29. Support to form a space in the
11 moves up and down with respect to the leg 29 against the elastic force of the spring 32 according to its weight. The elastic force of the spring 32 is set so that the lower end of the outer shell 16 does not come into contact with the ground within the range of weight that can be detected by the weight sensor 33.

Reference numeral 33 denotes a weight sensor which is a weight detecting means provided on the upper plate 31, and this weight sensor 33 is connected to a rod 34 which supports the lower surface center of the bottom plate 17. Then, the weight of the entire container body 11 is applied to the weight sensor 33 via the rod 34, and the weight sensor 33 outputs a weight detection signal. Reference numeral 35 is an electronic circuit unit provided inside the leg portion 29.

FIG. 2 shows the operation panel section 36 provided on the outer peripheral surface of the main body 11.
37 is a display unit composed of a 4-digit 7-segment type light emitting diode, and is configured to display the weighing value and the remaining time until the start of rice cooking. And
On the upper side of the display unit 37, a display unit 38 in the shape of characters "hour" and "after minutes" is attached, and in the lower side, a display unit 39 in the shape of character "g" is attached. Numeral 40 is an indicator lamp for quick cooking, 41 is an indicator lamp for rice cooking / purple, 42 is an indicator lamp for heat retention, 43 is an indicator lamp for weighing, and 44 is an indicator lamp for timer. Press the timer setting switch 45 to display 37
Is displayed, and the displayed time is increased or decreased by turning the timer dial 46 left or right. When the weighing switch 47 is pressed, the weighing value is displayed on the display unit 37. 48 is a zero setting switch for initializing the weighing display. By pressing the rice cooking start switch 49, timer rice cooking or rice cooking is started. 50 is a cancel switch.

FIG. 3 is a block diagram of the electronic circuit unit 35. The microcomputer 51 has a rice cooking control function, a timer rice cooking function, a calculation function for the weight detection signal from the weight sensor 33, and a display for the display unit 37 and the like. It has a control function. In addition, the microcomputer 51 uses a lid heater 23, a rice cooking heater 27, and a heat retention heater during rice cooking control.
28 is appropriately controlled based on the temperature detection of the temperature sensor 26 and the like.

The operation of the present invention configured as described above will be described in detail below.
First, when weighing rice, the weighing switch 47 is pressed. As a result, the microcomputer 51 switches to the weighing mode, and the display unit 37 switches to the weighing display.
When the zero adjustment switch 48 is pressed before the rice is stored in the container 18 in the container body 11, the microcomputer 51 performs the initial setting, and the display unit 37 displays zero.
Next, when the lid 19 is opened and rice is put in the container 18, the spring 32 supporting the container body 11 is bent by the weight of the rice, and the bottom plate 17 of the container body 11 and the upper plate 31 of the leg portion 29 are bent. The space between and becomes smaller. As a result, the rod 34 of the weight sensor 33 in contact with the bottom plate 17 and the upper plate 31 is lowered, and the weight of the rice contained in the container 18 is detected by the weight sensor 33 due to the lowered dimensional change, and the detection signal is micro Given to computer 51. The microcomputer 51 has a zero adjustment switch 48.
With reference to the detection signal of the weight sensor 33 when pressing, the weight of the rice is calculated from the detection signal when the rice is stored, and the value is displayed on the display unit 37 as the weighing value, and the user The amount of rice can be known from the display. The number of cups may be displayed instead of the weight. After this, the user takes out the weighed rice from the container 18, rinses the rice, returns the washed rice to the container 18, stores water corresponding to the measured value of the rice, and starts rice cooking or timer rice cooking. In the case of timer rice cooking, when the timer setting switch 45 is pressed, the time is displayed on the display unit 37, and the timer dial 46 is rotated to match this time with the desired rice cooking start time.
By pressing the rice cooking start switch 49, timer rice cooking is set.

As described above, according to the present embodiment, the container body 11 that accommodates the container 18 and that is provided with the lid 19 that can be opened and closed is provided with the spring 32 above the leg 29.
It is provided so as to be movable up and down through the inner case 14 forming the container body 11 by forming the container body 11 up to the upper part of the container 18.
Abut on the upper part of the container 18, and
A weight sensor 33 is disposed between the container 18 and the weight sensor 33, and the weight of the entire container main body 11 including the container 18 detected by the weight sensor 33 determines the container 18
By calculating the weight of the contents such as rice stored in the display unit 37 as a measured value, the container 18 does not move up and down with respect to the container body 11, and the upper end of the container 18 is always in the upper frame 12. Since it is placed in a fixed position, regardless of the amount of rice stored in the container 18,
The lid 19 can be easily closed. In addition, the weight sensor 33
Since the electronic circuit unit 35 and the electronic circuit unit 35 are arranged outside the container body 11 and are separated from the container 18, water attached to the outside of the container 18 may affect the weight sensor 33 and the electronic circuit unit 35. It can be prevented. Further, when a weight slightly heavier than the maximum weight that can be accommodated in the container 18 is applied to the main body 11, the lower end of the outer shell 16 is grounded on the table on which the leg 29 is placed or the floor surface. By setting the elastic force of the spring 32, the length of the outer shell 16, or the like, the outer shell 16 serves as a stopper to prevent the weight sensor 33 from being overloaded. Further, since the leg body 29 is supported by the entire leg portion 29, the weight sensor 33 can stably perform the weighing, and the cylindrical side plate 30 of the leg portion 29 is attached to the outer portion 16 of the body portion 11. Because it covers it, the body 11
Is guided by the side plate 30 and can move up and down stably,
Weighing is more stable. Further, since only the cylindrical side plate 30 of the leg portion 29 projects downward, the ground contact with a table or the like is stably performed, and the rattle of the leg portion 29 is small.

Although one embodiment of the present invention has been described in detail above, it can be appropriately modified within the scope of the present invention. For example, as shown in FIG. 4, an outer shell 29A may be provided upright on the outer circumference of the leg portion 29, and the bottom of the container body 11 may be covered with the outer shell 29A. In this embodiment, the measured value is displayed as it is, but this display can be replaced with the number of cups and displayed.

[Advantages of the Invention] As described in detail above, the present invention accommodates the leg portion, the container, and the container, and is provided on the leg portion so as to be movable up and down through a bullet to reach the upper portion of the container. And a weight detecting means for detecting the weight of the container body, which is provided between the bottom portion of the container body and the leg portion, and the weight detecting means. And a display means for displaying the weight of the content contained in the container, which is obtained based on the detected weight, and easily opens and closes the lid of the container body regardless of the amount of the contained content. In addition, it is possible to provide a rice cooker capable of protecting the weight detecting means from the influence of water.

[Brief description of drawings]

1 is a sectional view showing an embodiment of the present invention, FIG. 2 is a front view of an operation panel portion, FIG. 3 is a block diagram, FIG. 4 is a sectional view showing another embodiment, and FIG. It is sectional drawing which shows a prior art example. 11 …… Main body 18 …… Container 29 …… Legs 32 …… Spring (ammo) 33 …… Weight sensor (weight detection means) 37 …… Display section (display means)

Claims (1)

[Scope of utility model registration request] 1. A leg portion, a container, and a container for accommodating the container, which is provided on the leg portion so as to be movable up and down through a bullet and is formed to reach the upper portion of the container to come into contact with the upper portion of the container. A container main body having a case, a weight detecting means provided between the bottom portion of the container main body and the leg portion to detect the weight of the container main body, and the weight determined based on the weight detected by the weight detecting means. A rice cooker, comprising: a display unit for displaying the weight of the contents contained in the container.