JPH0346681Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an electric cooking device in which an inner container equipped with a heater is placed within an outer container made of resin.

BACKGROUND ART Conventionally, electric cooking appliances are well known in which an outer container is made of a resin material and an inner container is provided inside the outer container. FIG. 1 is a side sectional view showing a conventional example of an electric cooker, in which a protruding rod 9 is attached to the upper end of the outer container 1.
It is formed integrally with the A flange 13 provided on the upper surface of the inner container 7 and provided with a heater 11 such as a sheathed heater is placed on the protruding rod 9 of the outer container 1. The outer container 1 is made of resin material and includes legs 5, a handle 2, a plug receiver cover 3, and
Since the protruding rod 9 at the upper end of the outer container 1 can be formed integrally, there is no need to attach the legs 5, the handle 2, or the plug cover 3 to the outer container 1 as separate members, and there is no need for screws or other fixing tools for attachment. Since we do not use
It has the advantage of being cheap to produce. Furthermore, the inner container 7
has a boss 10 projecting downward from the bottom surface,
Insert the screw 12 into the screw hole of this boss 10 through the bottom plate 8.
The bottom plate 8 is provided with a hole 6, through which air flows and rises between the outer container 1 and the inner container 7, and the outer container 1 and the upper end. Since the air flows out from between the flanges 13 provided at the upper end of the inner container 7, this air flow prevents the outer container 1 from becoming hot. Further, the plug cover 3 is provided with a contact that connects to the heater 11 of the inner container 7, and a power plug 4 that is detachably attached to this contact is provided. Therefore, outer container 1
The inner container 7 is placed on a plurality of protruding rods 9 provided at the upper end of the container. However, if the outer container 1 made of resin has a small wall thickness, the protruding rod 9 must also be a round rod with a small diameter, and the protruding rod 9 may be deformed or deformed by the weight of the inner container 7. In addition, the protruding rod 9 made of a resin material undergoes thermal deformation because it directly receives the high temperature of the inner container 7.
This causes the outer container 1 and the inner container 7 to become loose, resulting in poor fixation. Further, a notch may be provided around the upper end of the outer container 1 and the inner container 7 may be placed on the outer container 1, but since the outer container 1 is made of resin, the inner container 7
The upper end of the outer container 1 is directly exposed to the high temperature of the container and is heated, resulting in deformation, scorching, discoloration, and other undesirable drawbacks.

The electric cooker of the present invention has been devised to eliminate the above-mentioned drawbacks. Fig. 2 is a partial cross-sectional side view showing an embodiment of the electric cooker of the present invention, and Fig. 3 is an external view of the electric cooker. A partial plan view of the container 14, FIG. 4 is a plan view of the heat insulating plate 25, FIG. 5 is a front view of the heat insulating plate 25 in FIG. It is.

Next, the electric cooker of the present invention will be explained based on FIGS. 2 to 6. It includes an elastic band-shaped heat insulating board 25 formed in a substantially U-shape, and both ends and middle part of this heat insulating board 25. The protrusions 17, 27 on which the
It is provided integrally with the outer container 14 on the inner surface of the outer container 14 made of a resin material, and the end of the heat insulating plate 25 is fixed and attached with a protrusion 28 provided above the protrusion 27, and the outer container 1
Protrusions 18 and 29 between the 4 inner surface and the 25 surface of the heat insulating plate,
This is an electric cooking appliance in which an inner container 19 is provided integrally with an outer container 14 and equipped with a heater 22 on the upper end of a heat insulating plate 25.

Next, details of the embodiment will be described.
is made of, for example, a metal plate such as stainless steel material, and as seen from the plan view shown in FIGS. 4 and 6,
It is U-shaped and has elasticity, and appropriately selected holes 32 are provided on the surface of the heat insulating board 25, and notches 33 are provided in the heat insulating board 25. And this insulation board 25
The protrusions 17, 27 on which the
It is placed on the upper surface 30 of the protruding base 27, and the end of the heat insulating plate 25 is locked to a protruding piece 28 provided above the protruding base 27. Further, a protrusion 31 formed integrally with the protrusion is provided on the upper surface of the protrusion 17 on which the intermediate portion of the heat insulating plate 25 is placed.
The upper surface 30 of the protrusion 27 on which both end portions of 5 are placed is horizontal. Furthermore, protrusions 18 and 29 that are integral with the outer container 14 are provided between the surface of the heat insulating plate 25 and the inner surface of the outer container 14. The protruding piece 18 is the protruding piece 18 that comes into contact with the middle part of the heat insulating plate 25, and the protruding piece 29 is the protruding piece 29 that comes into contact with the end part of the heat insulating plate 25. The outer container 14 is integrally provided with a handle 15, legs 16, etc., and the inner container 19 is equipped with a heater 22 such as a sheathed heater, and a boss 21 projects downward from the bottom of the inner container 19. , the bottom plate 24 at the bottom of the outer container 14 is provided in the screw hole of this boss 21, and the bottom plate 24
is fixed to the boss 21 with screws 23. Bottom plate 2
Reference numeral 4 is provided to close a hole 26 in the bottom of the outer container 14, and the bottom plate 24 has a hole. A flange portion 20 is formed at the upper end of the inner container 19, and this flange portion 20 abuts the upper end of the heat insulating plate 25 on which the inner container 19 is placed. Outer container 14
The protrusions 17 and 27 provided on the inner surface of the outer container 14
It is formed in a rib shape in the vertical direction. Therefore, when the elastic heat insulating plate 25 is placed on the protrusion 31 located on the upper surface of the protrusion 17 of the outer container 14 and the upper surface 30 of the protrusion 27, both ends of the heat insulating plate 25 are attached to the outer container. The heat insulating plate 25 is engaged with the outer container 14 because of the elastic force acting in the inner direction of the outer container 14 . and,
Place the inner container 19 on the upper end of the heat insulating plate 25, and connect the boss 21 at the bottom of the inner container 19 with the screw 2 through the bottom plate 24.
It's stopped at 3. A pair of heat insulating plates 25 are provided inside the outer container 14.

As described above, in the electric cooking device of the present invention, since the heat insulating plate 25 is interposed between the outer container 14 made of resin material and the inner container 19 equipped with the heater 22, the conduction area due to heat conduction is reduced. 14 is no longer heated to high temperatures, and discoloration and deformation of the outer container 14 due to high temperatures can be prevented.
Furthermore, since the heat insulating plate 25 has elasticity, it is easy to engage and attach it to the outer container 14. Furthermore, the protrusions 18 and 29 on which the heat insulating board 25 is attached, the protrusion 17,
27 and the like can be formed integrally with the outer container 14, so parts for attaching the heat insulating plate 25 are not required and the cost becomes low. In addition, the outer container 14 and the inner container 19 have no direct contact with each other, and the heat insulating plate 25
The outer container 14 is connected to the protrusion 31 of the protrusion 17 and the protrusion 2.
7 and the outer container 14.
Since the outer container 14 is in contact with only the protrusions 18 and 29 on the inner surface thereof, the area for heat conduction is small, and this has a great effect on the outer container 14 made of resin material.

[Brief explanation of the drawing]

FIG. 1 is a side sectional view showing a conventional electric cooker. 2 to 6 show an embodiment of the electric cooking device of the present invention, and FIG. 2 is a partially sectional side view. FIG. 3 is a partial plan view of the outer container. FIG. 4 is a plan view of the heat insulating board. FIG. 5 is a side view of FIG. 4. FIG. 6 is a partial plan view of the heat insulating plate mounted inside the outer container. 14...Outer container, 17...Protrusion, 18...Protrusion piece, 19...Inner container, 25...Insulation board, 27...
Tsudai, 29...Tsuban.

Claims (1)

[Scope of utility model registration request] A band-shaped, approximately U-shaped, elastic heat insulating plate 25 and protrusions 17, 27 on which both ends and a middle portion of the heat insulating plate 25 are placed are integrated into the inner surface of the outer container 14 made of a resin material. The end of the heat insulating plate 25 is fixed and attached with a protrusion 28 provided above the protrusion 27, and between the inner surface of the outer container 14 and the surface of the heat insulating plate 25,
An electric cooking appliance in which an inner container 19 is mounted, in which protrusions 18 and 29 are provided integrally with an outer container 14 and a heater 22 is provided at the upper end of a heat insulating plate 25.