JPS642087Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Object of the Invention] The present invention relates to the structure of a hot plate support portion of an electric heater in which a hot plate is supported by a support made of synthetic resin.
A conventional structure of this type will be explained with reference to FIGS. 5 and 6. 1 is a hot plate having a heater 2, and 3 is a support base made of synthetic resin. The support base 3 has a cylindrical base 5 having a center hole 4 into which a cylindrical metal bush 7 having a flange 6 is inserted. The bush 7 is fixed to the mounting portion 9 of the hot plate 1 by screws 8, and by locking the flange 6 of the bush 7 to the base 5, the hot plate 1 is supported on the support base 3.

However, in the conventional structure described above, since the temperature of the hot plate 1 is transmitted to the base 5 through the bush 7, the synthetic resin base 5 gradually deteriorates due to heat and becomes loose during long-term use. Furthermore, since the outer and inner diameters of the bushing 7 must be precisely machined to match the dimensions of the center hole 4 and the screw 8, there is a drawback that the cost is high. The present invention aims to solve this problem.

[Structure of the idea]

The structure of the hot plate support part of the electric heater of the present invention is such that a hot plate having a heater is supported via a metal bush by a support made of synthetic resin and equipped with a cylindrical base having a center hole. The bushing is made up of a polygonal cylindrical part having vertical cuts and a plurality of petal-shaped square teeth, the tubular part being inserted into the center hole, and the square teeth being inserted into the pedestal. It is characterized in that it is locked and fixed to the hot plate with screws. Examples thereof will be described below with reference to FIGS. 1 to 4.

FIG. 1 shows the overall structure of the hot plate support of the present invention, and the other parts except the metal bush 7 are the same as the conventional structure shown in FIG. 5. The bush 7 of the present invention is made of a metal plate with low thermal conductivity such as stainless steel, and as shown in FIG. 2, notches 11 are provided at regular intervals on one side of the metal plate 10. Then, the square teeth 12 are formed and molded into a polygonal or cylindrical shape as shown in FIG. The outer diameter of this polygonal or cylindrical tubular portion 13 is the center hole 4.
When inserted into the center hole 4, the cut 14 absorbs this, so that the cylindrical portion 13 comes into close contact with the center hole 4 and becomes stable. Note that if a rib 15 into which the notch 14 is fitted is provided on the inner surface of the center hole 4 as shown in FIG.
The position of the assembly can be stabilized, and assembly productivity can be improved. The square teeth 12 are curved and unfolded in a petal shape. The petal-shaped square teeth 12 are elastically interposed between the mounting portion 9 of the hot plate 1 and the pedestal 5.

[Effect of idea]

Since the hot plate support part of the present invention has the above structure, the heat of the hot plate 1 transferred to the pedestal 5 via the bushes 7 is transmitted through the notches 11 formed between the gap 1b and the petal-shaped square teeth 12. Since it is cooled by the circulating air, the pedestal 5 is prevented from being heated to a high temperature and thermally deteriorated. Further, since the bushing 7 is made by bending a metal plate, it is easy to work and does not require precision processing unlike the conventional bushing shown in FIG. 5, so it can be provided at a low cost. Therefore, the present invention has the effect of achieving the object of the invention.

[Brief explanation of the drawing]

Figure 1: Cross-sectional view of the hot plate support part of the present invention, Figure 2
Figure: Developed view of the metal plate forming the bush of the present invention, Figure 3: Perspective view of the bush of the present invention, Figure 4
Figures: Plan view A and side view B of a pedestal equipped with a bush of the present invention, Figure 5: A sectional view of a conventional hot plate support, Figure 6: An exploded view of Figure 5. 1... Hot plate, 2... Heater,... Support stand, 4... Center hole, 5... Pedestal, 6... Flange, 7... Button, 8
... Screw, 9 ... Mounting part, 10 ... Metal plate, 11 ... Notch, 12 ... Square tooth, 13 ... Cylindrical part, 14 ... Notch, 1
5...Rib.

Claims (1)

[Scope of utility model registration request] In a structure in which a hot plate having a heater is supported via a metal bushing by a support made of synthetic resin and having a cylindrical pedestal having a center hole, the bushing is a polygonal cylinder having a vertical cut. The cylindrical part is inserted into the center hole to form a gap between the center hole of the support base and the bush, and the square teeth A structure of a hot plate support portion of an electric heater, characterized in that the hot plate support portion is engaged with the base and fixed to the hot plate with screws.