JPH026638Y2 - - Google Patents

Description

[Detailed description of the invention] [Technical field of the invention] This invention is a heating plate used in electric cooking devices such as electric pots, crepe makers, hot plates, and fryers, or water heaters such as electric pots and coffee boilers. Regarding.

[Conventional example]

Conventionally, in electric heaters, a groove is provided in a metal plate, a sheathed heater is placed in the groove, and the sheathed heater is attached to the metal plate by crimping the metal plates on both sides of the groove. It consists of

Generally, the sheathed heater can be easily crimped and mounted by pressing the sheathed heater placed in the groove of the metal plate from above using a press.

However, in the crimping work, pressing is performed sequentially along the longitudinal direction of the sheathed heater, so if the operator forgets to crimp any part, the hot plate will be defective. In other words, if the crimping is forgotten, a gap will be created between the sheathed heater and the metal plate, resulting in poor heat transfer.

In addition, especially when a different press jig is used during crimping, crimping may be forgotten.

The problem here is that if the sheathed heater has a caulking part near the cradle of the hot plate on which the thermostat is attached, if you forget to caulk it, the sheathed heater will fall off when the finished product is completed. It was hot.

[Purpose of invention]

The present invention is a hot plate for an electric heater devised to eliminate the above-mentioned drawbacks, and its purpose is to prevent forgetting to tighten the sheathed heater.

[Structure of the idea]

According to the present invention, a thermostat pedestal part provided on the hot plate surface, a groove provided in the pedestal part and the hot plate surface,
A sheathed heater is disposed in this groove, and a recess is provided in the pedestal, and a protrusion protrudes from the bottom of the recess to the upper surface of the pedestal, and at the same time, the sheathed heater is crimped onto the hot plate. A hot plate for an electric heater is obtained, characterized in that the protrusion falls into the recess and the thermostat is placed on the pedestal.

〔Example〕

1 to 6 show embodiments of the present invention.

FIG. 1 is a plan view showing a hot plate 1 for an electric heater;
FIG. 2 is a perspective partial sectional view showing the thermostat 10 and the pedestal part 3 of the hot plate 1 to which the thermostat 10 is attached. FIG. 3 is a sectional view of the sheathed heater 2 before tightening. 4 is a sectional view showing the state after crimping as shown in FIG. 3, and FIGS. 5 and 6 are sectional views showing the crimping structure of the sheathed heater 2 of the hot plate 1 in FIG. 1.

The present invention will be explained with reference to the above drawings.

Reference numeral 1 denotes a hot plate, on the surface of which a container is placed, for example, to heat the liquid in the container, or a hot plate 1 whose surface is treated with fluorine resin.
I use the surface to bake eggs, vegetables, and other cooked foods.

A groove 9 is provided on the back surface of the hot plate 1.
A sheathed heater 2 is disposed inside.

In the hot plate 1 of the embodiment, the sheathed heater 2 is bent into a circular shape, and both ends of the sheathed heater 2 are parallel to each other. One end of the sheathed heater 2 is located on the pedestal 3 of the thermostat 10.

The pedestal portion 3 is provided with a groove 9 in which the sheathed heater 2 is placed.

A board 11 of the thermostat 10 is placed on the upper surface of the pedestal part 3.

The thermostat 10 is placed on the pedestal portion 3 after the sheathed heater 2 is crimped.

At this time, the pedestal part 3 of the hot plate 1 is provided with a recessed part 5, and a protrusion 6 is formed from the bottom surface of this recessed part 5 to project onto the surface of the pedestal part 3. The protrusion 6 is pushed into the recess 5 at the same time as crimping. This is done using a press jig.

That is, the press jig that presses the protrusion 6 and the press jig that caulks the sheathed heater 2 of the pedestal section 3 operate simultaneously. By using a press jig, a caulking part 7 and a protrusion 6 falling into the recess 5 are formed on the pedestal part 3, and the thermostat 10 is attached to the pedestal part 3 of the hot plate 1.
It can be placed on.

The mounted thermostat 10 is fixed by screws passing through holes 12 in the substrate 11 and holes 4 in the pedestal portion 3. Therefore, if the protrusion 6 of the pedestal part 3 protrudes, the thermostat 10 cannot be fixed.

The other end of the sheathed heater 2 is crimped by a crimping press jig of the pedestal part 3 to form a crimped part 7.

Both ends of the sheathed heater 2 are crimped by pressing against the surface of the hot plate 1 on the sides of the groove 9, as shown in FIG.

Other longitudinal parts of the sheathed heater 2 have grooves 9.
Fold both sides inward and press to tighten.

In this way, the hot plate 1 is fixed with screws 8 to screw holes (not shown) in the exterior plate.

[Effect of idea]

As described above, the heat plate for an electric heater of the present invention can prevent the thermostat from being attached and causing defects due to forgetting to tighten the sheathed heater. Moreover, since the thermostat pedestal part is formed at the same time as crimping, the work is simple.

Furthermore, pressing and crimping the sheathed heater circumference and both ends of the sheathed heater separately prevents forgetting to crimp.

[Brief explanation of drawings]

The drawings show an embodiment of the invention. Fig. 1 is a plan view showing a heating plate for an electric heater, Fig. 2 is a perspective partial cross-sectional view showing a thermostat and a pedestal part of the heating plate to which the thermostat is attached, and Fig. 3 is a view of the sheathed heater before it is crimped. FIG. 4 is a sectional view of FIG. 3 after crimping, and FIGS. 5 and 6 are sectional views of the sheathed heater crimping structure of the hot plate in FIG. 1. It is. DESCRIPTION OF SYMBOLS 1...Hot plate, 2...Sheathed heater, 3...Best part, 7...Clinching part, 9...Groove, 10...Thermostat.

Claims (1)

[Scope of utility model registration request] A thermostat pedestal part is provided on the hot plate surface, a groove is provided in the pedestal part and the hot plate surface, a sheathed heater is arranged in this groove, a recess is provided in the pedestal part, and a groove is provided on the bottom of this recess. and a protrusion protruding from the upper surface of the pedestal part, and the protrusion falls into the recessed part at the same time as the sheathed heater is crimped onto the heat plate, so that the thermostat can be placed on the pedestal part. A heating plate for electric heaters.