JPH0118123Y2 - - Google Patents

Description

[Detailed description of the invention] (Technical field) This invention relates to a safety device for a rice cooker, and in particular, by opening and closing a safety switch in response to the insertion and removal of the inner pot, electricity is prevented from being applied to the heater when the inner pot is removed. This invention relates to a safety device configured to prevent dry firing.

(Purpose of the invention) In the safety device for such a rice cooker, the present invention is to prevent water spilled into the outer pot from being transmitted to the safety switch by forming a drain section by cutting upward at the lower edge of the switch lever. It is designed to prevent this and eliminate the causes of switch failures and malfunctions.

(Embodiments of the invention) Examples of the invention shown in the drawings will be described in detail below.

1 is an outer pot with a through hole 2 drilled in the center of the bottom; 3 is a hot plate type rice cooking heater installed at the inner bottom of the outer pot 1; 4
5 is an inner pot that can be moved in and out of the outer pot 1 and placed on a rice-cooking heater 3; 5 is a heat-sensitive element (operating member) that has a built-in heat-sensitive element such as a thermistor and has a rod 6 (operating rod) in contact with the lower part; By inserting the rod 6 into the through hole 2, it is installed at the inner bottom of the outer pot 1 so as to be vertically movable. Reference numeral 7 denotes a spring that always urges the heat-sensitive element 5 upwardly so that it projects above the upper surface of the rice-cooking heater 3, and 8 is a heat-shielding tube disposed between the rice-cooking heater 3 and the heat-sensitive element 5. Thus, when the inner pot 4 is placed in the outer pot 1, the heat sensitive element 5 moves downward against the spring 7 due to the weight of the inner pot 4, and when the inner pot 4 is taken out, the biasing force of the spring 7 is applied. move upwards.

9 is a mounting angle fixed to the outer bottom surface of outer pot 1;
10 is a plate-shaped switch lever rotatably supported on the mounting angle 9, and one end is connected to the rod 6 of the heat sensitive element 5.
By being connected to the lower end of the heat sensitive body 5, it rotates as the heat sensitive body 5 moves up and down. 11 is a normally closed safety switch installed on the mounting angle 9, and the switch lever 10
It is opened and closed by the switch operation part 10a, and when the heat sensitive element 5 is in the upper position (the inner pot 4
It is pressed by the switch operation part 10a in the state in which it is removed (the state in which it is removed), and the opening operation is performed. Therefore, when this safety switch 11 is opened, electricity is prevented from flowing to the rice cooking heater 3,
It is configured to prevent the rice cooking heater 3 from drying when the inner pot 4 is taken out.

Reference numeral 12 denotes a drainage section formed by making an upward cut in the lower edge of the switch lever 10, and is located between the switch operation section 10a and the connecting section of the rod 6, and is connected to the heat sensitive element 5, the rod 6, and the switch lever 10. The water 13 transmitted through the water is caused to fall and is prevented from reaching the safety switch 11.

(Prior Art) The present invention has the above-mentioned configuration, but in the conventional case, the switch lever 10 did not have a draining part 12, so when water was spilled into the outer pot 1, the water was transmitted to the switch lever 10. The water reached the safety switch 11, and there was a risk that the safety switch 11 would break down or malfunction due to water intrusion.

(Effect of the invention) Since the safety device of the rice cooker of the present invention has the above-mentioned configuration, even if water spilled into the outer pot passes through the operating lever of the operating member and reaches the switch lever, the switch lever will not be turned off. The drain part allows the water to fall from the switch lever and prevents the water from reaching the safety switch, so water can be prevented from entering the safety switch without using a separate member. With a very simple configuration that requires only a concave cutout on the lower edge, it is possible to reliably prevent water from entering the safety switch.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram of the structure of the safety device of the present invention, and FIG. 2 is a view of the same switch lever as seen diagonally from below. 1: Outer pot, 2: Through hole, 3: Rice cooking heater, 4:
Inner pot, 5: Heat sensitive element (operating member), 7: Spring,
10: Switch lever, 11: Safety switch, 1
2: Draining section.

Claims (1)

[Scope of Claim for Utility Model Registration] An inner pot that can be freely moved in and out is provided in an outer pot having a through hole at the bottom, and a heater for heating the inner pot is disposed in the outer pot, and the above-mentioned A safety switch is provided to control energization of the heater, and an operating member is provided in the through hole of the outer pot so as to be movable up and down and is constantly urged upward by a biasing body and comes into contact with the bottom of the inner pot. A switch lever, which is connected at one end to an operating rod of the operating member and rotates in conjunction with the vertical movement of the operating rod to open and close the safety switch at the other end, is pivotally supported on the outer bottom surface of the outer pot; A safety device for a rice cooker, characterized in that a drain section cut out in the shape of a recess is formed between the operating rod connection side of the lower edge of the switch lever and the safety switch side.