JPH0366310A - Electric rice cooker - Google Patents

Abstract

PURPOSE:To surely seal the inside of an operating part in a cover body and to prevent the generation of malfunction, etc., by providing a separating plate for separating lead wires and a seal cover for filling a seal material on the inside and the outside of a take-out hole of a bulkhead of the operating part. CONSTITUTION:An operating part 50 is attached to a cover 10a of a cover body 10, an operating sheet 51 in the operating part 50 is exposed on the cover 10a, and while looking at a display window 52, a reservation of rice cooking and a menu, etc., can be set. An indicator 55 is attached onto a printed board 54 together with other circuit element, and plural lead wires 56 are led out of the printed board. A separating plate 57 is provided with a comb teeth 57a having comb-teath grooves for the lead wires 56, and by the separating plate 57, the lead wires 56 are fixed by one piece each between the comb teeth 57a and an inner edge of a take-out hole 10a. A seal material 59 is filled into a cover 58 from an injection port 58a, and by the overflow from a discharge port 58b, and seeing-through from the outside, filling is decided. When filling is confirmed, a bottom face plate 53 is attached, and the injection port 58a and the discharge port 58b are closed up by a projection 53a.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Fields] Generally, this type of electric rice cooker is used by being placed on a cooking table in a kitchen where many people work standing. Therefore, it is more convenient to provide the operation section for reserving the rice cooking time etc. on the top surface of the rice cooker body rather than on the side surface thereof. For this reason, some models have been made that have an operating section on the top of the lid so that you can set the cooking time and other settings while standing. However, when the operating section is provided on the top surface of the lid, special consideration is required for wiring and taking out the lead wire of the operating section for connection with the power cord attached to the main body.

The present invention relates to an electric rice cooker, and more particularly to an improvement in a top-operated electric rice cooker in which an operation section is provided on the top surface of the lid.

[Prior Art] FIG. 5 is a diagram illustrating the configuration of the main parts of a conventional electric rice cooker that employs a top operation method.

In Fig. 5, (1) is the outer cover, (2> is the draw-out hole provided in the outer cover (1), (3) is the operation section, (4) is the operation sheet, and (5) is the printed board. , (6) is a display. In addition to the display (6), other circuit elements such as capacitors are also attached to the printed board (5). (7) is a plurality of lead wires, (8) ) is a holding plate, (9) is a polypropylene sealing material, (1G) is a panel, and (11) is an operation chamber covered with a panel (10).

In a conventional rice cooker with such a configuration, a plurality of lead wires (7) are passed through the extraction hole (2), and then a presser plate (8) is placed on the back surface and fixed with screws. Next, the sealing material (9) is filled into the extraction hole (2> from the operation chamber (11) side) and the panel (10> is attached to the outer cover (1). 1) and is connected to a connecting terminal on the main body side from a hinge portion (not shown).

[Problem to be solved by the invention] The operation section (3) of the conventional rice cooker has a plurality of lead wires (7).
After the pull-out hole (2> through which the parts are passed together is closed with a presser plate (8)), the sealing material (9) is filled.

For this reason, due to the wiring work during assembly after injection of the sealing material (9) and the difference in the expansion coefficient of the parts due to heat, etc., the lead wire (7)
) and the sealing material (9>).In particular, each time the outer cover (1) is opened and closed, the lead wire (7) that passes through the hinge part bends and stretches, causing the lead wire (7) and sealing material (9)
There may be gaps between the lead wires (7) and the lead wires (7), resulting in incomplete sealing. If the seal on the operating part (3) is incomplete, moisture such as steam from cooking rice may enter the interior through the gap.
There was a problem that the insulation of the printed board (5) deteriorated, causing the operation part (3) to malfunction.

The present invention was made in order to solve the problems of the conventional rice cooker, and the lead wire of the operating section is separated, fixed and led out, and the inside of the operating section provided inside the lid is connected. The rice cooker is designed to securely seal the rice cooker and thereby prevent breakdowns such as malfunctions.

[Means for Solving the Problems] The present invention provides an electric rice cooker in which a separating plate for separating lead wires and a sealing lid for filling a sealing material are provided inside and outside of an extraction hole in a partition wall of an operating part provided in a lid body. It is made up of a container.

Further, the separation plate is provided with comb teeth having comb grooves corresponding to the number of lead wires, and a transparent material is used for the sealing lid. Further, an injection port and a discharge port for the filler material are provided at a remote position of the seal lid, and projections are formed on the bottom plate in correspondence with these injection ports and discharge ports.

[Operation] Each of the multiple lead wires connected to the co-printed board has one
Each book is sandwiched between the comb teeth of the separation plate and the inner edge of the extraction hole of the partition wall, and is pressed and fixed while being separated. The filling state of the sealing material inside the transparent sealing lid can be seen from the outside.

Further, when the sealing material is injected from the injection port of the seal lid and becomes full, it overflows from the discharge port located at a distant position, confirming that the sealant is full. After filling is confirmed and the bottom plate is attached, the injection port and the discharge port are closed by the protrusions of the bottom plate, so the assembly work is performed subsequent to the injection of the sealant. The plurality of lead wires drawn out pass near the hinge part of the lid body and are connected to the bottom board on the side of the case body.

[Embodiment of the Invention] FIG. 1 is an explanatory diagram of the configuration of an embodiment of the present invention, and FIG. 2 is an enlarged view of the main part thereof.

In Figures 1 and 2, (1) is the case body, (2>
is the outer pot attached to the inside of the case body (1), (3)
) is a rice cooking heater, (4) is a sensor, and (5) is an inner pot. A standard water level line is engraved inside the inner pot (5) to indicate the appropriate amount of water for the volume of rice, for convenience when cooking rice. The inner pot (5>) can be freely taken out from the outer pot (2). (6> is a latch receiver.

(7) is a frame plate that covers the upper part of the gap between the case body (1) and the outer pot (2>), (8> is a heat shield plate, and (9>) is a plug attached to the cord reel.

(10) is a lid provided on the upper part of the case body <1). (11) is a hinge for opening and closing the lid body <10>;
2) is a hinge shaft, (13) is a hinge spring, (14) is a latch corresponding to the latch receiver (6>), (16) is a push button, (17) is an inner lid, and (18) is an upper lid. (20) is a can-shaped lid heater, and (31) is a mounting plate. Mounting plate (
31) caulks the two shafts (18a) to press and fix the lid heater (20) against the inner surface of the upper lid (18).

(32) is a synthetic resin upper lid frame, (33) is an upper lid gasket, and the upper lid (18> to which the lid heater (20>) is fixed is attached to the upper lid frame (32>) from below via the gasket (33>). (41) is a hollow support frame, (42) is a reflective plate, (43) is a heat insulating material, and (44) is a reinforcing plate. These elements are assembled into a unit to form a lid support (40). It is configured.

(50) is an operating section attached to the lid cover (10a) of the lid body (10), and (51) is an operating sheet in the operating section (50). The operation sheet (51) is attached to the lid cover (10a
) is exposed at the top, and rice cooking reservations, menus, etc. can be set from the top while looking at the display window (52). Operation unit (50
) is shown in FIG. (53> is a bottom plate, (54) is a printed board, (55) is a display mounted on the printed board (54) together with other circuit elements, (
56) are a plurality of lead wires drawn out from the printed board (54). The bottom plate (53) is pressed against the tip of the partition wall (10b) formed on the inner surface of the lid cover (10a) with a gasket, and the printed board (54) and the like therein are hermetically housed.

(57) is a separation plate (shown in Figure 4) equipped with comb teeth (57a) having comb grooves corresponding to the number of lead wires (56), and (58) is a transparent material such as polycarbonate. The produced seal lid (59) is a sealing material made of silicone rubber (RTV) filled inside the seal lid (58). The seal lid <58> is provided with an inlet (58a) and an outlet (58b) at positions separated from each other. The inlet (58a) and the outlet (58b) are located on the bottom plate (
53) facing the two protrusions (53a). And, the separation plate (57) and the sealing lid <58) are separated by a partition wall <10b
) Ejection hole (10c) for lead wire (5B)
fixed inside and outside.

In this case, the lead wires (
5B) are sandwiched one by one between the comb teeth (57a) and the inner edge of the extraction hole (10c), and while being separated, are pressed in the vertical direction and fixed. In addition, the sealing lid (5) of the sealing material (59)
8) Filling is performed from the inlet (58a), and fullness is determined by overflow from the discharge port (58b) located at a remote location and by seeing through from the outside. When it is confirmed that the sealing material (59) is filled, the bottom plate (53) is attached to the lid cover (10a).
), and the projections (53a) close the openings of the inlet (58a) and the outlet (58b), respectively. Separation and fixation of the plurality of lead wires (5B) by the comb teeth (57a) during assembly ensures a reliable seal inside the operating section (50), and allows for determination of fullness by overflow and see-through, and for checking the bottom plate (53). Closing the opening during installation contributes to the ease and speed of the installation work.The lead wire (5B> led out from the operation part (50>) is connected near the hinge (11) together with the lead of the lid heater (20). It is connected to a bottom board (not shown) provided at the inner bottom of the case body (1) through the board.

In the electric rice cooker of the present invention having such a configuration, the inner pot (
5) Add the polished rice and the appropriate amount of water as directed. !
(17) and close the lid (10). Next, pull out the cord reel and connect the plug <9> to a 100V power outlet. Next, while looking at the display window (52) etc. on the surface of the lid body <50>, the user operates the operation sheet (51) of the operation unit <50> to reserve and set the meal time.

When the rice cooking start time corresponding to the reserved meal time comes, the timer of the microcomputer is activated and the switch is turned on, and the rice cooking heater (3>) and the lid heater (20) are energized.

The radiant heat emitted from the lid heater (20) is transferred to the inner pot (5).
In cooperation with the heat emitted from the rice cooking heater (3) installed at the bottom of the rice cooker, the water and rice inside the inner pot (5) are virtually heated all over.The lid heater (20) and the rice cooking heater (3)
Rice cooking begins by heating the entire surface of the rice cooker, and the temperature of the water in the inner pot (5) rises to generate steam. When rice cooking progresses and the water boils and the water in the inner pot (5) decreases and the temperature rises rapidly, the sensor (4) is activated and the rice cooking heater (3) and lid heater (20) are automatically energized. will be stopped. As a result, the rice will be cooked in the inner pot (5), and the rice will be cooked evenly and ready to eat at the reserved time, and you can start serving the rice.
When you press the push button (IB) on the top of 0), the hinge spring (1
Due to the elastic force of step 3), the lid (20) automatically rotates around the hinge shaft (12) to open the top surface of the main case (1) and serve freshly cooked rice.

In the above embodiment, an electric rice cooker is described in which a hinge spring is provided on the hinge of the lid and the lid is automatically opened by pressing a push button. The present invention can also be applied to a handle-type rice cooker.

[Effects of the Invention] As described above, according to the present invention, a separating plate that separates and presses the lead wire and a sealing lid that is filled with a sealing material are provided, facing inside and outside of the extraction hole of the partition wall of the operating section. An electric rice cooker was constructed.

Further, the separation plate is provided with comb teeth having comb grooves corresponding to the number of lead wires, so that each lead wire can be separated and tightened.

Further, a transparent material is used for the sealing lid, and an inlet and an outlet for the filler are provided at separate positions on the sealing lid. As a result, the sealing of the lead wire of the operation part is reliable.
The inside of the operation part is sealed, so there is no risk of short-circuiting or corrosion of circuit parts due to moisture.

Therefore, according to the present invention, it is possible to realize an electric rice cooker in which the operating section operates accurately and no failure occurs.

[Brief explanation of drawings]

Fig. 1 is an explanatory diagram of the configuration of an embodiment of the present invention, Fig. 2 is an enlarged view of its main parts, Fig. 3 is a bottom view of the operating section, Fig. 4 is a perspective view of the separation plate, and Fig. 5 is a top view. FIG. 2 is a diagram illustrating the configuration of main parts of a conventional electric rice cooker that employs an operation method. In Figures 1 and 3, (1) is the case body, (2)
is the outer pot, (3) is the rice cooking heater, (4) is the sensor, (5)
is the inner pot, (6> is the latch holder, (7) is the frame plate, (8) is the heat shield plate, (9> is the plug, (10> is the lid body, (11) is the hinge, (12> is the hinge) The shaft, (13) is the hinge spring, (
14) is the latch, (1B) is the push button, (17) is the inner lid, (
(8) is the top lid, (20) is the lid heater, (28) is the heater lead, (31) is the mounting plate, (82) is the top lid frame, (38) is the
) is the upper cover gasket, (41) is the support frame, (42> is the reflective plate, (43) is the heat insulator, (44> is the reinforcing plate, (50> is the operation part, (51) is the operation sheet, (52) is the display window, (
53) is the bottom plate, (53a) is the protrusion, (54) is the printed board, (55) is the display, (58) is the lead wire, (57)
> is a separation plate, (57a) is a comb tooth, (58) is a seal lid,
(58a) is an inlet, (58b) is an outlet, and (59) is a sealing material. Note that the same reference numerals in the figures indicate the same or corresponding parts.

Claims (3)

[Claims] (1) A main heater for rice cooking is arranged on the inner bottom of the outer pot installed inside, and a case body in which the inner pot is inserted, one end of which is supported by a hinge, and a latch attached to the other end on the top surface. In an electric rice cooker, the electric rice cooker is provided with an operating section and a lid that is opened and closed using the hinge as a fulcrum, a separation plate that separates a lead wire from the inside and outside of an extraction hole of a partition wall of the operating section, and a seal that is filled with a sealing material. An electric rice cooker characterized by having a lid. (2) The electric rice cooker according to claim (1), wherein the separating plate is provided with comb teeth having comb grooves corresponding to the number of lead wires so that each lead wire can be separated and tightened. (3) The electric rice cooker according to claim (1), wherein a transparent material is used for the seal lid. (4) The electric rice cooker according to claim (1), wherein an inlet and an outlet for the filler are provided at separate positions on the sealing lid.