JPH0722543B2 - kitchenware - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a cooking utensil, such as a rice cooker, used in general households.

2. Description of the Related Art A conventional cooking utensil of this type has a structure as shown in FIG. 2 as disclosed in Japanese Utility Model Laid-Open No. 60-57323.

That is, in FIG. 2, reference numeral 1 is a cooking utensil main body, a pan 2 is provided in the cooking utensil main body 1, and a lid 3 is openably and closably provided via a hinge mechanism. The lid 3 is composed of an outer lid 4, a lid cover 6 having an inner plate 5 attached to the inner surface thereof, and a handle 7 provided on the outer lid 4. Reference numeral 8 denotes an engaging protrusion, which is provided on the inner plate 5 so as to protrude. Reference numeral 9 denotes an inner lid, which is engaged with and held by the engaging protrusion 8.
Reference numeral 10 denotes a lid heater, which is provided in the central portion of the inner plate 5 and is urged by a spring or the like so as to come into contact with the inner lid 9 and loosely inserted in the central hole of the inner plate 5. An operation unit 11 is provided inside the lid 3. In the operation section 11, reference numeral 12 is a waterproof wall, which is erected on the inner plate 5 and is formed by partitioning the electrical equipment chamber 13 in the lid cover 6 by the waterproof wall 12. . 14 is a switch for operation 15
A circuit board having an indicator 16 for display and an electronic component 17, the circuit board 14 being housed in the electrical equipment chamber 13 and screwed to a plurality of boss portions projecting downward on the outer lid 4. It is fixed by 18 etc.

Further, the switch 15 and the display 16 are exposed in the openings 19 and 20 formed in the outer lid 4, respectively. Reference numeral 21 is a display sheet, and the display sheet 21 is attached to the outer lid 4 by a double-sided adhesive tape or the like so as to cover the openings 19 and 20.

SUMMARY OF THE INVENTION However, in such a conventional configuration, the electronic component 17
Around the electrical equipment room 13 that houses the circuit board 14 where
It must be sealed with, for example, EP rubber which is impermeable to moisture, but in this case, when the control lead wire connected to the circuit board 14 passes through the rubber, a slight gap is formed between the lead wire and the lead wire. May occur, and moisture in the air or infiltration of heated steam during cooking may occur from this gap, which may damage the electronic component 17.

In addition, when the EP rubber is replaced with a water-impermeable and soft material such as butyl rubber, the lead wire portion can be sealed, but on the other hand, once assembled, it is difficult to remove, and it can be reused. Butyl rubber adheres to parts,
It was difficult to reuse.

The present invention solves such conventional problems, and an object thereof is to provide a cooking utensil having excellent moisture resistance, serviceability, and reusability.

Means for Solving the Problems In order to solve the above problems, the present invention relates to an outer lid that covers an upper opening of a cooking utensil body, a substrate cover that fits into the outer lid, and the inside of the substrate cover. And a circuit board having electronic components, between the groove or rib provided on the outer lid and the rib or groove provided on the board cover,
EP rubber is used for crimping, the lead wire connected to the circuit board is passed through the passage hole provided in the outer lid, and a groove is provided in the cap that covers this passage hole, near the passage hole of the corresponding outer lid. A rib or groove is provided on the substrate, and butyl rubber is interposed between the groove and the rib for pressure bonding to make the inside of the substrate cover hermetically sealed.

Operation With this configuration, the entire circumference of the circuit board cover that houses the circuit board is sealed with EP rubber, and the lead wire passages are sealed with butyl rubber. Will be located in the still air layer, and as a result, it will be less likely to be adversely affected by ambient moisture, hot air, etc., and quality can be improved. Further, since butyl rubber is used only locally, the range of butyl rubber attached to parts can be minimized, and therefore reusability and serviceability after assembly and disassembly can be improved.

Example Hereinafter, an example of the present invention will be described with reference to FIG.

In FIG. 1, 31 is a cooking utensil main body, and a pan 32 is detachably installed in the cooking utensil main body 31. Reference numeral 33 denotes an outer lid that is rotatably supported on one side of the upper opening of the cooking appliance body 31 and that covers the upper opening. Reference numeral 34 is a board cover which accommodates a switch for operation, a display 35 for display, and a circuit board 37 having an electronic component 36 inside. Further, between the groove portion 38 provided in the substrate cover 34 and the rib 40 provided upright on the inner top surface of the display plate portion 39 of the outer lid 33, impermeable to water and flexible. EP rubber 41 of
It is tightened and fixed by a screw 42.

Reference numeral 43 is a passage hole through which a lead wire 44 connected to the circuit board 37 of the outer lid 33 is passed, and the lower surface opening thereof is covered with a cap 45. The cap 45 is provided with a groove 46, and the outer lid 33 is juxtaposed with a rib 47 corresponding to the groove 46, and is impermeable to moisture between the rib 47 and the groove 46. , And a soft butyl rubber 48 is interposed, and is fixed by tightening with screws. Groove 46 of this cap 45, outer lid
The rib 47 and the butyl rubber 48 of 33 are configured to close the passage hole 43 and seal the inside of the substrate cover 34, and the details thereof are as shown in FIG. 49 is a film-shaped display sheet.
The double-sided adhesive tape or the like is attached so as to cover the display 35 and the opening provided at the position corresponding to the switch.

The operation of the configuration shown in FIG. 1 will be described below.
The display plate portion 39 and the substrate cover 34 of the outer lid 33 are sealed at their entire peripheries by EP rubber 41, and the lead wire 44 connected to the circuit board 37 is passed through a passage hole 43 provided in the outer lid 33. Since it is sealed by the cap 45 and butyl rubber 48,
The soft butyl rubber 48 also enters the gap between the lead wires 44, and as a result, it becomes possible to obtain sufficient sealing performance.

Further, since the opening of the display plate portion 39 is covered with the display seal 49, it is possible to secure a sealed state having a static air layer in the substrate cover 34 that houses the circuit board 37, and as a result, the thermal conductivity. Is low and the heat insulation is high. Also, EP rubber 41 and butyl rubber 4 are impermeable to moisture.
Since 8 is used, it is possible to reliably prevent the heated steam and the like that enter the outer lid 33 from entering the substrate cover 34.

In the above embodiment, ribs 40 and 47 are provided on the outer lid 33, and the groove portions 38 and 4 are provided on the substrate cover 34 or the cap 45.
Although the one with 6 is explained, on the contrary, the outer lid 3
Even if the groove portion is provided in 3 and the rib is provided in the substrate cover 34, and the EP rubber 41 and the butyl rubber 48 are interposed between them, the same operational effect as in the above-described one embodiment can be obtained.

Effects of the Invention According to the present invention, as is clear from the description of the above embodiments,
Sufficient sealing property against moisture such as heating steam can be secured,
In addition, since it is possible to obtain a heat insulating effect, it is possible to suppress the influence on the circuit board to a minimum and improve the quality.

Also, the butyl rubber seal of the lead wire is formed only by the outer lid and cap, so when disassembling for maintenance of the circuit board, do not touch the butyl rubber, which is difficult to reuse, and remove only the board cover. Therefore, it is possible to improve the serviceability.

[Brief description of drawings]

FIG. 1 is a partial sectional view of a cooking utensil showing an embodiment of the present invention, and FIG. 2 is an exploded perspective view showing a conventional cooking utensil. 31 …… Cookware body, 33 …… Outer lid, 34 …… Board cover,
37 …… Circuit board, 38,46 …… Groove, 40,47 …… Rib, 43…
… Passage hole, 44 …… Lead wire, 45 …… Cap.

Claims (1)

[Claims] 1. An outer lid for covering an upper opening of a cookware body,
A board cover fitted to the outer lid and a circuit board housed inside the board cover and having an electronic component are provided, and the groove or rib provided on the outer lid and the rib or groove provided on the board cover. A soft EP rubber, which is impermeable to moisture, is interposed between the terminals and is crimped, and the lead wire connected to the circuit board is passed through a through hole provided in the outer lid, and a cap covering the through hole. A groove or rib is provided on the outer cover, and a rib or groove is provided in the vicinity of the corresponding passage hole on the outer lid, and a butyl rubber that is impermeable to water and soft is interposed between the groove and the rib to perform crimping. , Cookware with the inside of the substrate cover sealed.