JPS6140255Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to an improvement to the installation structure of the insulation material used inside an electric rice cooker, and in particular to provide an electric rice cooker with a simple structure that is extremely easy to install.

The embodiments of the present invention will be explained below with reference to the drawings.
Reference numeral 1 denotes an electric rice cooker, and its external appearance is formed by a cylindrical outer frame 2 with an open top surface and a lid 3 that covers the top opening so as to be openable and closable. A bottom cover 5 having legs 4 is disposed at the lower part of the outer frame 2, and an inner frame 6 in the shape of a cylinder with a bottom is disposed inside with a space therebetween. A pot 15 for storing rice and water is removably disposed within the inner frame 6. A heating element 7 such as an annular sheathed heater is disposed at the inner bottom of the inner frame 6. Reference numeral 8 denotes a disk-shaped mounting plate disposed on the outer bottom surface of the inner frame 6 by means such as spot welding, and has an insertion hole 9 bored approximately in the center. At approximately the center of the inner bottom of the inner frame 6, a bulging portion 10 that bulges slightly upward is integrally molded, a through hole 11 is bored in this center portion, and a storage chamber 12 is formed together with the mounting plate 8. ing. 13, most of the entire storage room 12
The thermal reactor is housed in the through hole 11 at all times.
The temperature at the bottom of the pot 15 is sensed by elastically contacting the bottom surface of the pot 15 so as to be freely retractable and protrusive due to the biasing force of the spring 14. Reference numeral 16 denotes a stopper that restricts the rise of the thermal reactor 13 so that it does not protrude too much due to the force of the spring 14 when the pot 15 is not housed in the inner frame 6. Reference numeral 16' denotes a switch lever for moving the thermal reactor 13 up and down, which closes a switch 17 electrically connected to the heating element 7 when the thermal reactor 13 is being moved up and down in a see-saw action. . Reference numeral 18 denotes a fixing member that supports the switch lever 16'. As shown in FIG. 2, 19 is a band-shaped heat insulating material wrapped around the outer wall of the inner frame 6, and tongue pieces 20 are integrally formed with a plurality of cutouts at the lower edge of the band-shaped heat insulating material. The tongue pieces 20 are each bent inward and overlapped with the back surface of the mounting plate 8. 21 is a locking piece cut and raised on the periphery of the insertion hole 9 of the mounting plate 8, which passes through the tongue piece 20 of the heat insulating material 19 and bends the protrusion to prevent the heat insulating material 19 from shifting downward. Prevents it from falling. Note that the locking piece 21 does not need to penetrate the tongue piece 20, but may be locked by hooking the tip of the tongue piece 20.

23 is a notch formed in the heat insulating material 19 to avoid the fixing member 18.

As mentioned above, the cooking device of the present invention has a mounting plate fixed to the outer bottom surface of the bottomed cylindrical inner frame, which is disposed at a distance within the cylindrical outer frame and is equipped with a heating element at an appropriate position. A band-shaped heat insulating material is wrapped around the outer circumferential surface, and a plurality of tongue pieces formed with notches formed in the lower edge of the band-shaped section are bent and overlapped on the back surface of the mounting plate, and the locking pieces formed on the mounting plate are attached to the tongue pieces. Since the tongue pieces are fixed, it is possible to simultaneously insulate both the vertical and horizontal surfaces of the inner frame with a reduced number of parts.Moreover, the overlap of the tongue pieces on the mounting plate is achieved by the locking plate formed on the mounting plate. This can be done extremely easily with one piece, and prevents the insulation material from shifting downward.

[Brief explanation of the drawing]

Figure 1 is a cutaway front view of the main parts of the electric rice cooker of the present invention.
FIG. 2 is an exploded perspective view of the main part of FIG. 1. 6... Inner frame, 8... Mounting plate, 19... Insulating material, 20... Tongue piece, 21... Locking piece.

Claims (1)

[Scope of utility model registration request] A mounting plate is fixed to the outer bottom surface of a bottomed cylindrical inner frame that is installed at intervals within the cylindrical outer frame and has heating elements at appropriate locations, and a band-shaped heat insulating material is wrapped around the outer peripheral surface. In addition, a plurality of tongues formed by notches in the lower edge of the band-shaped heat insulating material are bent and overlapped on the back surface of the mounting plate, and the tongues are locked to locking pieces formed on the mounting plate. Characteristic electric rice cooker.