JPS5835139Y2 - rice cooker - Google Patents

Description

[Detailed Description of the Invention] The present invention provides a rice cooker with a simple structure and an efficient inner lid.

An embodiment of the present invention will be described below with reference to the drawings. 1 is a rice cooker that is used both as a heat-retaining rice cooker or an ordinary electric rice cooker, and is generally referred to as a rice cooker. 2 is integrally formed with a substantially cylindrical outer case 3.
This is what forms the body part.

Reference numeral 4 denotes a bottom cover made of synthetic resin that is fitted around the circumference of the lower end of the outer case 3 to close the lower opening, and has legs 5 integrally formed at appropriate corners and a cord reel storage box 6 attached to the back side. There is.

Reference numeral 7 denotes an outer pot with an open top, which is housed in the outer case 3 with a space therebetween.

Reference numeral 8 denotes an annular decorative frame made of heat-resistant plastic into which the upper end of the outer case 3 and the upper end of the outer hook 7 are fitted.

9 is an inner pot that is removably housed and suspended in the outer pot 7;
The upper opening edge thereof is engaged with the upper end portion of the outer hook 7, so that it is aligned with the outer hook 7 over substantially the entire circumference, with a gap 10 therebetween.

Reference numeral 12 denotes an outer lid having a handle 13 on its upper surface, and is rotatably supported by a hinge 14 provided at the upper end of the outer wall of the outer case 3 via a hinge pin 15.

16 is a side heat insulator housed between the outer case 3 and the outer pot 7, and 17 is an upper heat insulator housed inside the outer lid 12.

18 is a heat sink made of aluminum, for example, and a lid heater 19
It is fixed with a mounting screw to a mounting boss 21 integrally formed inside the outer cover 12 together with a heater holding plate 20 wrapped with the heater holding plate 20 .

Reference numeral 23 denotes a locking lever that is rotatably supported within the outer cover 12 at a position facing the hinge 14 via a shaft pin 24, and a knob 25 attached to the upper end is inserted through the knob hole 26 of the outer cover 12. An engaging pawl 27 is provided at the exposed lower end and projects toward the center of the outer case 3 .

Reference numeral 28 denotes a resilient coil spring wound around the shaft pin 24, which constantly biases the engaging pawl 27 of the locking lever 23 to rotate in the counterclockwise direction.

29 is opposite to the locking lever 23 and is connected to the hinge 1.
A retaining member made of heat-resistant plastic is fixed to the upper end of the outer case 3 with a screw 30 on the side opposite to the engaging claw 2.
An engaging portion 31 for locking 7 is integrally formed.

Reference numeral 32 denotes a switch device such as a microswitch that controls energization to a heating element, which will be described later.

33 is a side heater wrapped around the upper outer periphery of the outer pot 7;
Reference numeral 4 denotes a heating element for cooking rice, such as an annular sheathed heater, exposed in the gap 10.

Reference numeral 35 denotes a thermal reactor that can freely move in and out of the upper through hole 7' provided at the center of the bottom of the outer pot 7, and is always urged by a spring 36 so as to come into pressure contact with the bottom surface of the inner pot 9. An operating rod 38 having a heat receiving plate 35' and rotating around a central shaft 37
It is operated by an operation button 39 fixed to the tip of the button.

Reference numeral 40 denotes an auxiliary bottom plate fixed to the bottom surface of the outer pot 7 via a plurality of attachment members 41 such as insulators so as to surround the bottom heat insulating material 42 on the bottom surface of the outer pot 7.

44 is a lower inner lid that closes the upper opening of the inner pot 9, and a gasket 46 having a through hole 45 in the center is attached thereto.

Reference numeral 47 denotes an upper inner lid that covers the inner pot 9 via the lower inner lid 44, and has a through hole 48 formed approximately in the center thereof.

49 has a locking part 50 at its tip, and its rear end is connected to the heat sink 1.
8 is a lid suspension pin that is caulked and protrudes.

51 is press-fitted from the locking part 50 and is attached to the lid suspension pin 4.
9 is an elastic cylindrical body made of silicone rubber or the like, which is slidably fitted in the cylindrical part 9, has a cylindrical part 52 and a base part 53, and has a pressing plate 54 made of metal or hard synthetic resin fixed to its upper surface; A spring 5 is installed between the pressing plate 54 and the heat sink 18.
5 to constantly urge the elastic cylinder 51 downward.

Note that the elastic cylinder 51 is prevented from being removed by a locking portion 50.

To attach the upper and lower inner lids 47 and 44, first insert the through hole 48 of the upper inner lid 47 into the cylindrical portion 52, and then insert the through hole 45 of the lower inner lid 44 into the lid suspension pin. 49, the pressing force of the spring 55 is evenly transmitted to the elastic cylinder 51 via the pressing plate 54, and as a result, the upper inner lid 47 is securely inserted into the inner pot 9 and the lower inner lid 44. The steam that covers the upper and lower inner lids 47 and 44 flows between the surfaces of the cylindrical portion 52 and the base portion 53 and the upper lid 47.
Due to its close relationship with the surface, almost no leakage occurs through the through hole 48, and the steam is discharged from the vent valve body 56, which communicates with the outside.

Since the present invention is constructed as described above, the pressing force of the spring is transmitted to the inner lid through the pressing plate, so that the inner lid does not dance and cause rattling noise during rice cooking. Rice can be cooked quietly, and since steam is shielded by the elastic cylinder, it does not leak between the upper surface of the inner lid and the lower surface of the outer lid and generate dew on the lower surface of the outer lid.

[Brief explanation of drawings]

The figure is an enlarged sectional view of the main parts of the rice cooker of the present invention. 9... Inner pot, 49... Lid hanging pin, 5
1...Elastic cylindrical body, 54...Press plate, 5
5... Spring.

Claims (1)

[Scope of utility model registration request] The inner part of the rice cooker body, which is housed inside the main body, is fitted into the cylindrical part of a nine-shaped elastic cylinder that is slidably fitted into a lid suspension pin protruding from the back of the outer lid that freely opens and closes the top opening of the rice cooker body. A through-hole drilled in the center of an inner lid covering the pot is inserted in a removable manner, and a pressing plate is disposed on the upper surface of the elastic cylinder, and a spring is inserted between the pressing plate and the back surface of the outer lid. A rice cooker characterized by a rice cooker.