JP2005288046A - Rice cooker - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a rice cooker which enables the free setting of a disposing position of a connector by slanting a power source basal plate of to reduce a distance to a protection frame from the front side to the rear side at the front side of a main body of a container so that the length of a distributing wire becomes short and the total size can be reduced. <P>SOLUTION: The rice cooker includes the protection frame to form an inner wall, the main body of the container which includes a main body case to form an outer wall, a cover member which is freely opened and closed against the main body of the container, a heating means which is provided between the protection frame and the main body case, a microcomputer basal plate to mount a switch and a display section, and the power source basal plate to mount various electronic parts, wherein the above power source basal plate is constituted to be slanted to reduce the distance to the protection frame from the front side to the rear side at the front side of the main body of the container. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a rice cooker, and particularly to an arrangement structure of a microcomputer board to which various operation switches and a display unit are attached.

  Recently, the demand for rice cookers has increased, and as a result, many functions have been added, making it possible to reliably perform precise and efficient rice cooking control and subsequent heat insulation control over a long period of time. Is widely used as one of the easy-to-use products.

  On the other hand, buyers tend to seek small-sized products that are not only inexpensive but also have the same functions, considering the installation location and the convenience of carrying. In rice cookers, reduction of production cost and downsizing are urgent issues.

  By the way, the rice cooker is a product capable of precise and efficient rice cooking control as described above, and has a microcomputer board for enabling such control and a power supply board for attaching various electronic components. Yes.

  The outline of the conventional rice cooker is demonstrated based on FIG. As shown in the drawing, the rice cooker 1 includes a main body case 2 that forms an outer wall, a shoulder member 6 that is formed at the upper end of the main body case 2, and a lid member 3 that is provided at an upper opening of the shoulder member 6. It is constituted by. A valve member 4 is provided at the center of the lid member 3, and when the internal pressure rises above a predetermined level, the internal vapor is released to the outside. A known hinge mechanism 5 is provided on the rear side of the lid member 3 so that the lid member 3 can be freely opened and closed with respect to the main body case 2, and the lid member 3 can be detached from the main body case 2.

  A protective frame 7 forming an inner wall is provided in the main body case 2, and an inner pot 8 for storing rice and the like in the protective frame 7 is stored and disposed. A heating means 9 such as a coil is disposed between the lower part of the protective frame 7 and the upper part of the bottom of the main body case 2, and cooks the rice and the like put in the inner pot 8.

  Reference numeral 10 denotes a microcomputer board that is inclined above a space formed on the front side (opposite the hinge mechanism 5) of the rice cooker 1, and is held by the holding member 11 and on the upper surface thereof. An operation switch 13 for operating the display unit 12 and the heating means 9 is attached. Further, a power supply board 14 to which various electronic components 15 for heating control of the heating means 9 are attached is held at a substantially vertical position below the microcomputer board 10. (For example, refer to Patent Document 1).

  Thus, the microcomputer board 10 of the conventional rice cooker 1 was provided in the space formed in the front side of the rice cooker 1 substantially parallel to the display part 12. For this reason, if the microcomputer board 10 is made larger due to the desire to increase the size of the display unit 12 or to mount more electronic components on the microcomputer board 10 in accordance with the diversification of functions, the front side of the rice cooker 1 is necessary. As a result of protruding forward as described above, the rice cooker 1 is not large, and it cannot be said that the design is preferable.

  On the other hand, as a response to such a demand, there is one in which another third board is attached vertically below the microcomputer board 10.

However, the use of the third substrate increases the cost. However, increasing the size of the microcomputer substrate 10 without using the third substrate increases the size of the rice cooker 1 and increases the design as described above. Is also not preferable. Thus, conventionally, there has been no one in which only two microcomputer boards are used and the microcomputer board 10 is enlarged without increasing the size of the rice cooker 1.
JP-A-8-2558577

  The object of the present invention is to solve the conventional problems, and more specifically, by disposing the display unit and the microcomputer board in non-parallel, the production cost is increased without increasing the size of the rice cooker. It is to provide a rice cooker that can increase the size of the microcomputer board.

  In order to achieve the above object, the present invention adopts the following configuration.

  In the invention which concerns on Claim 1, the container main body which consists of the protective frame which forms an inner wall, the main body case which forms an outer wall, the lid member which can be opened and closed with respect to this container main body, Between the said protective frame and the said main body case In a rice cooker comprising a heating means provided, a microcomputer board to which a display unit is attached, and an operation cover on the front surface of the display unit, the display unit and the microcomputer substrate are non-parallel.

  And by such a structure, a microcomputer board can be enlarged more without enlarging the whole rice cooker and without impairing a design.

  According to a second aspect of the present invention, the operation cover and the display unit are substantially parallel, and the operation cover and the microcomputer board are not parallel. With such a configuration, the microcomputer board can be made larger without impairing the visibility on the display unit.

  According to a third aspect of the invention, the microcomputer board is inclined in the vertical direction from the display unit. And by such a structure, since the inside of the space formed in the front side of a rice cooker can be utilized effectively, a microcomputer board can be enlarged easily without enlarging the whole rice cooker and without spoiling a design. .

  In the invention according to claim 4, an operation switch is provided on the microcomputer board, and the operation switch is provided substantially perpendicular to the operation cover and non-perpendicular to the microcomputer board. Normally, in a rice cooker, a separate tact switch is provided below the operation switch, and the tact switch is pushed by pushing the operation switch. Therefore, even with such a configuration, the conventional switch operation can be performed.

  In the invention which concerns on Claim 5, the said switch is provided with a cover part. With such a configuration, when the operation switch is pressed, the cover portion provided integrally with the operation switch moves down along the side wall of the tact switch provided below the operation switch. Done on the street.

  In the invention according to claim 1, by making the display unit and the microcomputer board non-parallel, it becomes possible to make the board configuration two boards, the microcomputer board and the power supply board, and to increase the area of the microcomputer board. Many electronic components can be mounted on a microcomputer board with little influence, and the display unit can be made larger. Furthermore, cost reduction can be achieved within the determined design dimensions without increasing the overall size of the rice cooker.

  In the invention according to claim 2, by making the operation cover and the display part substantially parallel and making the operation cover and the microcomputer board non-parallel, the microcomputer board area is increased without impairing the visibility in the display part. In addition, the number of substrates can be reduced to two, and the cost can be reduced within the determined design dimensions without increasing the overall size of the rice cooker.

  In the invention which concerns on Claim 3, in addition to the effect of the invention which concerns on Claim 1, 2 by tilting a microcomputer board to a perpendicular direction from a display part, the inside of the space formed in the front side of a rice cooker is utilized effectively Therefore, the microcomputer board can be enlarged without difficulty. Therefore, cost reduction can be achieved within the determined design dimensions without increasing the overall size of the rice cooker.

  In the invention according to claim 4, by providing an operation switch on the microcomputer board, and providing the operation switch substantially perpendicular to the operation cover and non-perpendicular to the microcomputer board, in addition to the effects of the invention according to claims 1 to 3. Since the pressing of the operation switch can be transmitted to the tact switch attached to the microcomputer board, the conventional switch operation can be performed.

  In the invention according to claim 5, in addition to the effect of the invention according to claim 4, the cover portion guides the operation switch in the normal direction and prevents its deviation by providing the operation switch with the cover portion. The reliability of switch operation can be improved.

  FIG. 1 shows a cross-sectional view in which the present invention is applied to a rice cooker, and a side on which a later-described hinge mechanism 31 is provided is a rear side, and a side on which an operation cover 51 opposite to the hinge mechanism 31 is provided is a front side. The rice cooker 20 is roughly divided into a main body case 21 that forms an outer wall, a shoulder member 22 that is formed at the upper end of the main body case 21, and a lid member 23 that is provided at an upper opening of the shoulder member 22. . The lid member 23 is made of resin and includes an upper plate 24, a lower plate 25 and a heat radiating plate 26. A heat insulating space 27 is formed between the upper plate 24 and the lower plate 25 to reduce heat escape as much as possible. Although not shown, a lid heater is disposed on the upper surface of the heat radiating plate 26, or a shoulder heater is provided on the shoulder member 22, and the heat radiating plate 26 is heated by these heaters, so that the rice in the inner pan 37 can be removed from above. It can also be heated.

  Further, a valve member 28 is provided at the center of the lid member 23, and when the internal pressure becomes a predetermined value or higher, the internal steam is discharged to the outside through the steam passage 29 through the steam passage 29. Further, on the rear side of the lid member 23, a hinge mechanism 31 having a known spring material is provided, and the lid member 23 is moved by locking or unlocking action of the lock member 32 provided on the upper front side of the rice cooker 20. The main body case 21 can be freely opened and closed, and is formed to be removable by lifting the cover member 23 upward while the cover member 23 is open. Is possible.

  The main body case 21 is made of resin, and a protective frame 33 that forms an inner wall is provided inside the main body case 21, and a heat retaining heater 36 is attached to the side wall of the protective frame 33, and the inner pot 37 is attached during heat retaining or the like. Heat. A plurality of legs 35 are integrally formed on the bottom of the main body case 21.

  In the protective frame 33, an inner pan 37 for storing rice and the like for cooking is stored and disposed, and a coil 38 as a heating means is attached to the bottom of the protective frame 33. Is controlled by control means (not shown) to properly heat the rice in the inner pot 37 by electromagnetic induction heating.

  In addition, an opening 39 is provided at the center of the bottom of the protective frame 33, and a center sensor 40 is provided so as to protrude upward and backward from the opening 39. The inner pot 37 is placed in the protective frame 33. When stored, the top of the center sensor 40 protruding from the center bottom surface of the inner pot 37 is pressed. Then, the center sensor 40 is pushed down to enable heating control of the rice cooker 20. Thus, the center sensor 40 also serves as a safety device for the rice cooker 20.

  On the front side of the rice cooker 20, a front space 41 having a substantially square cross section is formed on the front side as shown in the figure between the main body case 21 and the protective frame 33. An operation unit 50 is formed on the upper surface of the protruding portion that is above the front space 41 and is inclined downward from the rear side toward the front side.

  The operation unit 50 is formed integrally with the shoulder member 22, and is provided with a window 52 through which the display unit 59 can be visually confirmed and a plurality of switch holes 62. Further, a transparent resin operation is provided on the outer surface of the operation unit 50. A cover 51 is affixed.

  In the front space 41, a power board 45 and a microcomputer board 53, which are two boards, are disposed. The power supply board 45 is a board that is disposed substantially vertically behind the microcomputer board 53 in the front space 41, and includes a power transistor (IGBT) necessary for induction heating, a heating element such as various drive circuits, and the like. Various electronic components 46 for controlling 38 and the like are attached.

  The power supply board 45 is fixed to a holding member 47 attached to the shoulder member 22 with a screw (not shown) by means of a screw (not shown), and further below it is a cooling fan for discharging air from below to above. 48 and a sink 49 for effectively cooling a heat generating element such as an IGBT is attached above the cooling fan 48.

  Reference numeral 53 denotes a microcomputer board, which is arranged in a form along the operation unit 50 in front of the power supply board 45 and below the operation unit 50. The microcomputer board 53 is fixed to a holding member 54 attached to the shoulder member 22 with a screw (not shown).

  The microcomputer board 53 has a mounting hole 63 for mounting the cradle 56 on which the display unit 59 is placed, a plurality of tact switches 55 for performing various functions for cooking rice, various electronic components (not shown), and pin holes. 61 and the like are provided, and these electronic components and the like are electrically connected by solder or the like on the back surface of the microcomputer substrate 53, and are also electrically connected to various electronic components of the power supply substrate 45 by lead wires (not shown). .

  The cradle 56 is a resin member on which a display unit 59 such as a liquid crystal is mounted. As shown in FIG. 4, the mounting unit 56a, the long side mounting leg 56b, the short side mounting leg 56c, and the support leg 56d are provided. It is integrally molded. The mounting portion 56a is a box-shaped member having a rectangular shape in plan view, and a locking piece 56f for mounting and attaching the display portion 59 made of liquid crystal is formed on the inner side surface of the mounting portion 56a. A through hole 56e through which a pin 60 that functions as an electric wire connected to the display unit 59 is inserted is provided at the bottom.

  The long side mounting legs 56b are two mounting members formed on the front side of the outer surface of the bottom portion of the mounting portion 56a, and each has the same length and is longer than the short side mounting legs 56c as shown in FIG. In addition to being formed to a length H, a locking portion 66 having a cross-shaped letter shape is formed at the tip thereof. On the other hand, the short side mounting legs 56c are two mounting members formed on the rear side of the outer surface of the bottom portion of the mounting portion 56a, and are each formed to have the same length and a length h shorter than the long side mounting legs 56b. In addition, a locking portion 66 having a letter shape in cross section is formed at the tip.

  When the cradle 56 is mounted on the microcomputer board 53, the long side mounting legs 56b and the short side mounting legs 56c are inserted into the mounting holes 63 provided in the microcomputer board 53, and the section-shaped engagement is formed. The stop portion 66 is locked to the opposite surface of the microcomputer substrate 53, so that the attachment is performed.

  Each of the support legs 56d is a support member formed on each of the front side and the rear side of the outer surface of the bottom portion of the mounting portion 56a, and the front side is longer than the rear side. When 56 is mounted on the microcomputer board 53, the bottom surfaces of the support legs 56d are brought into contact with the microcomputer board 53, and the bottom surfaces of the two support legs 56d, the long side mounting legs 56b and the short side mounting legs 56b. The microcomputer board 53 is held between the locking portions 66 of the side mounting legs 56c. That is, the long side mounting leg 56b, the short side mounting leg 56c, and the support leg 56d do not rattle the microcomputer board 53 with respect to the microcomputer board 53 when the base 56 is mounted on the microcomputer board 53. Each dimension is selected as follows.

  A plurality of operation switches 57 are integrally formed on the side surface of the cradle 56 via ribs 64. When the cradle 56 is mounted on the microcomputer board 53, the plurality of operation switches 57 are It is configured to project slightly from a plurality of switch holes 62 provided in the operation unit 50, and the bottom surface of the operation switch 57 is positioned with a slight gap on the top surface of the tact switch 55 attached on the microcomputer board 53. Is set as follows. In FIG. 4, only one operation switch 57 is shown, and the others are omitted.

  The mounting of the cradle 56 on the microcomputer board 53 is performed as follows. That is, first, the display unit 59 is mounted on the mounting unit 56a in such a manner that the pin 60 of the display unit 59 is suspended downward from the through hole 56e of the mounting unit 56a, and is attached by the opposing locking piece 56f. Next, the cradle 56 is mounted on the microcomputer so that the long side mounting leg 56 b of the cradle 56 is aligned with the mounting hole 63 on the front side of the microcomputer board 53 and the short side mounting leg 56 c is aligned with the mounting hole 63 on the rear side of the microcomputer board 53. The long side mounting leg 56 b and the short side mounting leg 56 c are pushed into the mounting holes 63 of the microcomputer board 53 by placing on the board 53.

  Then, the bottom surface of the support leg 56d abuts on the microcomputer board 53, and the locking portions 66 of the long side mounting legs 56b and the short side mounting legs 56c are locked to the opposite surface of the microcomputer board 53, and the support legs The microcomputer board 53 is strongly held by 56d, the long side mounting leg 56b, and the short side mounting leg 56c. At the same time, the lower end of the pin 60 protrudes slightly below the long hole 61 provided in the microcomputer board 53, and the protruding portion is soldered for electrical connection with other electronic components and the like. Made. Further, the bottom surfaces of the plurality of operation switches 57 integrally formed on the side surface of the cradle 56 via the ribs 64 are positioned with a slight gap on the upper surface of the tact switch 55 attached on the microcomputer board 53. . The pin hole 61 is not a circular shape but a long and narrow elongated hole so that the pin 60 connected to the display unit 59 can be easily inserted.

  Since the cradle 56 is configured as described above, when the cradle 56 is attached to the microcomputer board 53, the display unit 59 and the microcomputer board 53 are non-parallel. The side mounting leg 56b side is higher than the short side mounting leg 56c side.

  Next, the microcomputer board 53 to which the cradle 56 is attached is attached to the holding member 54. The holding member 54 is not parallel to the operation cover 51 attached to the upper surface of the operation unit 50, and It is mounted with a more vertical tilt angle than the tilt angle. The microcomputer board 53 is attached in parallel to the holding member 54.

  Therefore, in a state where the microcomputer board 53 is attached to the holding member 54, the microcomputer board 53 is not parallel to the operation cover 51 and is attached with an inclination angle more perpendicular to the inclination angle of the operation cover 51. . On the other hand, the display unit 59 is set to be substantially parallel to the operation cover 51. As a result, the operation cover 51 and the display unit 59 are substantially parallel, and the operation cover 51 and the microcomputer board 53 are not parallel. At the same time, the microcomputer substrate 53 is inclined more vertically than the display unit 59.

  As described above, the upper ends of the plurality of operation switches 57 integrally formed on the side surface of the pedestal 56 via the ribs 64 slightly protrude from the plurality of switch holes 62 provided in the operation unit 50. At the same time, the bottom surface of the operation switch 57 is positioned with a slight gap on the top surface of the tact switch 55 attached on the microcomputer board 53. Since the operation switch 57 is provided so as to be substantially perpendicular to the operation cover 51 in order to improve operability, the operation switch 57 is not perpendicular to the microcomputer board 53.

  By the way, since the tact switch 55 is mounted horizontally on the microcomputer board 53, the axis line of the operation switch 57 and the axis line of the tact switch 55 do not coincide with each other. However, the tact switch 55 may be slid downward from the upper surface of the tact switch 55, and the tact switch 55 may not be normally pressed. In order to eliminate such an adverse effect, an arc-shaped cover member 58 is integrally formed on the side surface above the operation switch 57 as shown in FIG.

  Therefore, when the operation switch 57 is pressed and the operation switch 57 is moved downward as indicated by an arrow in FIG. 3, the cover member 58 is also moved downward together with the operation switch 57, and the inner surface of the cover member 58 is indicated by a wavy line in FIG. Thus, it moves up and down along the upper side surface of the tact switch 55. As a result, the operation switch 57 does not slide down from the top surface of the tact switch 55 and the tact switch 55 is normally pressed.

  Instead of providing the cover member 58, for example, a wedge-shaped member may be interposed on the lower surface of the tact switch 55 so that the axis line of the operation switch 57 and the axis line of the tact switch 55 coincide with each other.

  By arranging the microcomputer board 53 as described above, the visibility of the display unit 59 can be ensured and the area of the microcomputer board 53 can be increased. Therefore, the display unit 59 can be made larger, and the number of components mounted on the microcomputer board 53 can be increased. Further, even if moisture adheres to the microcomputer board 53 for some reason, the microcomputer board 53 is inclined more than the conventional one, so that the attached moisture can be moved downward faster. The inclination angle of the microcomputer board 53 can be increased as necessary.

  5 and 6 show an example in which a battery is attached to the microcomputer board 53. FIG. That is, when the battery 70 is attached to the back surface of the microcomputer substrate 53, the solder for attaching the battery 70 may be peeled off, the battery 70 may be dropped, or the battery 70 may be heated by heat that heats the inner pot. This example is for preventing such an adverse effect.

  As shown in the figure, a battery 70 is attached to the back surface of the microcomputer substrate 53. Then, a battery receiving portion 71 that is recessed downward is formed at a location where the battery 70 of the holding member 54 that holds the microcomputer substrate 53 faces, and an opening 72 is provided on the rear end side of the battery receiving portion 71. The opening 72 is formed vertically as indicated by a broken line in the figure. The reason why the opening 72 is formed vertically is to facilitate the split direction of the mold when the battery receiving portion 71 is made of a mold.

  By setting the mold split direction to such a vertical direction, the battery receiving portion 71 as shown in the figure can be easily made. In FIG. 5, the battery 70 has a horizontal type, and in FIG. 6, the main part of the battery 70 has a vertical type.

  FIG. 7 shows a further modification in which the battery 70 is attached. Since components such as a battery and a buzzer are larger than other electronic components, there are many restrictions even if the battery 70 is attached to the back surface of the microcomputer board 53, for example. In this example, such a problem is dealt with. A dedicated substrate 73 is provided on the back surface of the holding member 54, and the battery 70 is attached to the back surface of the substrate 73.

  Then, the substrate 73 is fixed to the holding member 54 with screws 74, and electronic components and the like are electrically connected to the battery 70 and the microcomputer substrate 53 by connectors 75 and 76. In this example, the board 73 is provided separately, but large parts such as a battery and a buzzer are previously attached to the board 73 in a unit shape, and the unitized board 73 is attached to the holding member 54, whereby a microcomputer board is obtained. The degree of freedom of mounting electronic components and the like on 53 increases, and the microcomputer board 53 can be used more widely.

  FIG. 8 shows another example in which the present invention is applied to a rice cooker. The display unit 59 and the cradle 56 are made non-parallel, and the cradle 56 and the microcomputer substrate 53 are arranged in parallel. The other configurations are the same as those of the first embodiment, and detailed description thereof is omitted.

  That is, the longest rib 80a, the medium-length rib 80b, and the shortest rib 80c are provided on the pedestal 56 from the front to the rear, and the display unit 59 is substantially the same as the operation cover 51 on the ribs 80a, 80b, and 80c. It is placed so as to be parallel. As a result, the operation cover 51 and the display unit 59 are substantially parallel, the display unit 59, the cradle 56, and the microcomputer board 53 are non-parallel, and further, the cradle 56 and the microcomputer board 53 are parallel. Although the above-described ribs have been described as three, any number may be used as long as the display unit 59 can be attached to the pedestal 56 with an angle. Things can be used.

  Even in this example, the display unit 59 and the microcomputer board 53 can be made non-parallel, and the microcomputer board 53 can be erected in the vertical direction, and the electronic component mounting area, which is the surface area, can be increased. Furthermore, since the mounting legs 56b and 56c of the cradle 56 can be made with the same length, the design becomes easy.

  FIG. 9 shows still another example in which the present invention is applied to a rice cooker, in which the cradle 56 is omitted and the display unit 59 is attached to the lower surface of the window 52. Only the main part is shown, and the other configurations are shown in FIG. The detailed description is omitted.

  That is, the display unit 59 is attached to the lower surface of the window 52 by a snap fit to the locking means 81, and the microcomputer board 53 and the holding member 54 are attached at an angle from the display unit 59 in the vertical direction. Connection with the microcomputer board 53 is made by connectors 82 and 83. As a result, the operation cover 51 and the display unit 59 are substantially parallel, and the display unit 59 and the microcomputer board 53 are not parallel.

  Even in this example, the display unit 59 and the microcomputer board 53 can be made non-parallel, and the microcomputer board 53 can be erected in the vertical direction, and the mounting area of the electronic component, which is the surface area, can be increased. Furthermore, since the cradle 56 is not necessary, the mounting area of the electronic components on the microcomputer board 53 can be increased accordingly, and the production cost can be reduced.

  FIG. 10 shows a modification of the present invention. Since the rice cooker is provided with a heat generating element or the like, cooling air is taken in from an air intake port provided at the bottom of the rice cooker and the necessary portions are cooled. That is, since the inside of the rice cooker is warm and the air intake is provided, insects such as cockroaches may enter. It is not preferable that the insects enter the inside of the rice cooker, but even if they enter, they cannot enter the inner pot 37, so there is no effect on the rice. However, insects entering the inside of the rice cooker may walk around the inside of the rice cooker and enter the display unit 59 from the cradle 56. If an insect enters the display unit 59, it will be visible from the window 52, which will give a great discomfort to the user. In this example, such a harmful effect is prevented.

  That is, a vertical wall 90 as shown in the figure is erected on the side surface forming the outer peripheral portion of the cradle 56. The upper end of the vertical wall 90 is brought as close as possible to the inner surface of the shoulder member 22 forming the operation unit 50 so that the insect 94 does not enter the display unit 59. Originally, it is most effective to bring the upper end of the vertical wall 90 into contact with the inner surface of the shoulder member 22 so that the insect 94 does not enter the display unit 59. However, since the display unit 59 generates heat, It is necessary to provide a space for air to flow around. Therefore, the distance R between the upper end portion of the vertical wall 90 and the inner surface of the shoulder member 22 is set to a length that prevents the insect 94 from entering the display portion 59, for example, about 0.1 mm.

  Further, in this example, a flange portion 91 is provided at the upper end portion of the vertical wall 90 so as to protrude in the outer peripheral direction. In such a form, as shown in the drawing, as shown by A, for example, as the insect 94 is indicated by A, even if the outer peripheral portion of the cradle 56 is lifted and enters the display portion 59, it is indicated by B by the collar portion 91. , The display unit 59 does not enter.

  Even if such a configuration is adopted for the cradle 56, a small insect may, for example, get over the collar portion 91 of the cradle 56 or attempt to enter the display portion 59 along the inner surface of the shoulder member 22. is there. As an effective means in such a case, by providing, for example, a silicone sealing material 92 having air permeability between the upper end portion of the vertical wall 90 and the inner surface of the shoulder member 22, such an adverse effect is provided. Can be prevented. In this case, the shape of the sealing material 92 is the same rectangular shape as the upper end portion of the cradle 56.

  Further, instead of providing the sealing material 92, an insect repellent material 93 for the insect 94 may be provided in the vicinity of the display portion 59 as shown in the figure. This also prevents the insect 94 from entering the display unit 59. Note that this example can also be applied to a conventional example in which the display unit and the microcomputer substrate are parallel.

  The present invention is not limited to the configuration of the above-described embodiment, and can be appropriately changed in design without departing from the gist of the invention.

Whole sectional drawing of the Example of the rice cooker of this invention The principal part expanded sectional view of the microcomputer board of this invention Enlarged perspective view of the operation switch and tact switch of the present invention Enlarged perspective view of the cradle of the present invention Expanded cross-sectional view of the main part when a battery is attached to the microcomputer board of the present invention The principal part expanded sectional view at the time of attaching another battery to the microcomputer substrate of this invention The other important part expanded sectional view at the time of attaching a battery to the microcomputer board of this invention The principal part expanded sectional view of the other microcomputer board of this invention The principal part expanded sectional view of the further another microcomputer board of this invention The principal part expanded sectional view of the further another microcomputer board of this invention Cross-sectional view of a conventional rice cooker

Explanation of symbols

DESCRIPTION OF SYMBOLS 20 ... Rice cooker 21 ... Main body case 22 ... Shoulder member 23 ... Lid member 24 ... Upper plate 25 ... Lower plate 26 ... Heat sink 27 ... Thermal insulation space 28 ... Valve member 29 ... Steam passage 30 ... Steam port 31 ... Hinge mechanism 32 ... Lock member 33 ... Protective frame 35 ... Leg 36 ... Insulating heater 37 ... Inner pan 38 ... Coil 39 ... Opening 40 ... Center sensor 41 ... Front space 45 ... Power supply board 46 ... Electronic component 47 ... Holding member 48 ... Cooling fan 49 ... Sink 50... Operation part 51 .. Operation cover 52 .. Window 53... Microcomputer board 54. ... through hole 56f ... locking piece 57 ... operation switch 58 ... cover member 59 ... display part 60 ... pin 61 ... pin hole 62 ... switch hole 63 ... mounting hole 64 80a, 80b, 80c ... ribs 66 ... locking part 70 ... battery 71 ... battery receiving part 72 ... opening 73 ... substrate 74 ... screw 75, 76, 82, 83 ... connector 90 ... vertical wall 91 ... collar part 92 ... seal Material 93 ... Repellent material 94 ... Insect

Claims (5)

A protective frame that forms an inner wall; a container main body that includes a main body case that forms an outer wall; a lid member that can be opened and closed with respect to the main container body; heating means provided between the protective frame and the main body case; and a display unit A rice cooker comprising an operation cover on the front surface of the display unit, and the display unit and the microcomputer substrate are non-parallel. The rice cooker according to claim 1, wherein the operation cover and the display unit are substantially parallel, and the operation cover and the microcomputer board are non-parallel. The rice cooker according to claim 1, wherein the microcomputer board is inclined in a vertical direction from the display unit. 4. The rice cooker according to claim 1, wherein an operation switch is provided on the microcomputer board, and the operation switch is provided substantially perpendicular to the operation cover and non-perpendicular to the microcomputer board. . The rice cooker according to claim 4, wherein the operation switch is provided with a cover.

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