JPS6313671Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to the waterproof structure of electric cooking appliances useful for example in hot plates, electric pots, etc. In particular, a single rubber packing can be used to securely protect multiple parts at the same time and without being affected by temperature fluctuations. It is something to do.

Usually, these types of hot plates and electric pots use removable controllers for convenience. To clean a hot plate like this, remove the controller and wash the plate body directly with water or wipe it with a damp cloth, but water that falls on the connection part of the controller will be removed from the connecting protruding pins and heat sensitive body holder on the plate side. There was a risk of electric current flowing to the side, causing poor insulation and leakage. Furthermore, there is a method in which the connecting protruding pin and the heat sensitive body receiving part are each covered with a special packing, but this is troublesome to attach, increases the number of work steps, and is also inconvenient in terms of parts management. In particular, when the temperature of the plate surface stabilizes at a set temperature, there is a risk that the packing may shift or come off due to the difference in thermal expansion coefficients between the plate and the frame, resulting in waterproofing failure.

The present invention has been developed in view of the above points, and will be described below with reference to the drawings. Reference numeral 1 denotes an aluminum alloy cooking board with a sheathed heater 2 embedded in its bottom, and has insulators 3, 3 and insulating tubes 4, 4 covering the insulators at both ends of the heater, and a pair of connection protrusions. Pins 5 and 5 are fixed. Reference numeral 6 denotes a heat-sensitive element receiving portion integrally molded on the cooking board 1 and located between the connecting protruding pins 5, 5, and 7 is a ring-shaped frame made of synthetic resin provided around the entire circumference of the cooking board 1. A heat insulating chamber 9 is provided above by the provided partition wall 8. Reference numeral 10 denotes a connection case provided on a part of the inside of the frame, which includes a pair of external insertion through holes 11, 11 through which the connection protruding pins 5, 5 provided on both sides can be inserted, and a heat sensitive element provided between the external insertion through holes. Inner insertion hole 1
2, and a laterally wide annular rib 13 provided around the outer periphery of the inner and outer insertion holes. Reference numeral 14 denotes outer through holes 15, 15 through which the connecting protruding pins 5, 5 provided on both sides can pass through, an inner through hole 16 through which the heat sensitive body provided between the outer through holes can pass, and the inner and outer through holes 15, 15, 1.
6 is a heat-resistant rubber packing formed with a laterally wide annular flange 17 provided on the outer periphery of the frame 7, and 18 is a temperature controller that has a connecting portion 19 on one side and is detachably attached to the frame 7, and has a switch mechanism ( A pair of blade holders 2 facing connection ports 20, 20 provided on both sides of the front surface of the connecting portion 19.
1, 21, a heat sensitive body 22 provided between the blade holders, and a temperature control knob 23 provided on the top surface. 24 is a support leg attached to the lower surface of the cooking board 1.

Next, regarding the assembly order, first, the annular flange 17 of the heat-resistant rubber packing 14 is elastically engaged with the annular rib 13 of the frame 7, and a part of the outer through-holes 15, 15 of the heat-resistant rubber packing 14 is inserted into the frame 7. A portion of the inner through hole 16 of the heat sensitive body 22 is fitted into the outer through hole 11, 11, respectively. At this time, the annular flange 17 of the heat-resistant rubber packing 14 snaps onto the annular rib 13 due to its elasticity and is fitted into the annular rib 13 for temporary fixation. And frame 7
Place it around the outer periphery of the cooking panel 1 and slide it toward the cooking panel 1 side so that the connecting protruding pins 5, 5 protrude from the outer insertion holes 11, 11 of the frame 7 through the outer through holes 15, 15 of the heat-resistant rubber packing 14. At the same time, a part of the heat-receptor receiving portion 6 is fitted into the inner through-hole 16 on the center side of the heat-resistant rubber packing 14. In this state, although not shown, a part of the frame 7 is fixed to the cooking board 1 at the same time as the support legs 24. The cooking panel 1 side and the frame 7, which are fixed in this manner through the heat-resistant rubber packing 14, are each fixed in a watertight manner by the heat-resistant rubber packing 14, so that water that enters from the outside and inside of the frame 7 is prevented from entering the heater 2. Prevents it from penetrating into the sealing side.

Although the present invention has been described with the heater buried, other fixing methods may be used, and the annular rib on the connection case side and the annular flange of the heat-resistant rubber packing are integrated so as to separately surround the respective insertion holes and through holes. Of course, it may be changed to

Since the present invention is constructed as described above,
A single heat-resistant rubber packing covers the connecting protruding pins and the heat sensitive element receiver, improving assembly work efficiency and reducing the number of parts.In addition, water that enters from the inside and outside of the frame is prevented from entering the sealing side (end) of the heater.
It does not penetrate into the body. In particular, the heat-resistant rubber packing and the frame are elastically engaged with each other by the laterally wide annular flange and annular rib, so even if the distance between the frame and the cooking board expands or contracts due to temperature, the wide part absorbs it and always ensures reliability. It can be waterproofed.

[Brief explanation of drawings]

FIG. 1 is a sectional view of the main parts of the electric cooking device of the present invention, and FIG. 2 is an exploded perspective view of the main parts. DESCRIPTION OF SYMBOLS 1... Cooking board, 2... Heater, 5, 5... Connection protruding pin, 6... Heat sensitive body receiving part, 7... Frame, 11, 11... External insertion hole, 12... Inner insertion hole, 13 ...Annular rib, 14...Packing, 1
5, 15...Outer through hole, 16...Inner through hole, 17
...Annular flange.

Claims (1)

[Scope of utility model registration request] A cooking board having a heater, connecting protruding pins fixed to both ends of the heater, a heat sensitive body receiving part formed on the cooking board so as to be located between the connecting protruding pins, and a frame provided around the cooking board. an annular rib formed to protrude inside the frame; an outer insertion hole bored in the annular rib into which the connecting protrusion pin can be inserted; and an inner insertion hole facing the heat sensitive element receiving portion; 1. An electric cooking appliance comprising a packing having an inner through hole that matches the insertion hole and an outer through hole, and an annular flange formed on the outer periphery that snaps into the annular rib.