JPS6043975B2 - Cooker safety device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a safety device for a cooker that cuts meat, vegetables, etc. with a cutter that rotates at high speed.

Conventional structure and its problems Conventionally, in the safety device of this type of cooker, the switch used to open and close the power supply and the brake circuit of the electric motor is turned off after the brake circuit is released when the container lid is attached. When the power switch is turned on and the container lid is removed, unless the power switch is released and then the brake circuit is turned on, the motor windings will be short-circuited, causing the motor to malfunction. or the switch may be seriously damaged.

In order to avoid this situation, switches with different operating forces are used or special means are used for the arrangement of the switches, but these are difficult to manage and lead to a significant increase in costs. This is the current situation. OBJECTS OF THE INVENTION In view of the above-mentioned problems, the present invention provides a safety device for a cooker that allows common use of switches used to open and close the power source and the brake circuit of the electric motor, and reduces cost.

Composition of the Invention In order to achieve the above object, the safety device for a cooker of the present invention includes a main body containing a built-in electric motor, a container placed on the main body,
A cutter having a cutting blade and driven in the container by an electric motor, a container lid that covers the upper opening of the container, a switch that opens and closes a power supply and a brake circuit of the electric motor in response to opening and closing of the container lid, and a container lid. and an actuator made of an elastic body that opens and closes the switch when operated by the switch. The above-mentioned actuator is configured to be operated using operating pieces having different span lengths.

This configuration makes it possible to share the switch used to open and close the power supply and motor brake circuits, and achieves a reliable and appropriate time delay between the opening and closing operations of both using a simple actuator, making the cooker more compact and reducing costs. It can be measured. DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

In the figure, reference numeral 1 denotes a main body with a built-in electric motor 2, and a container 3 is detachably installed on the upper part of the main body.

4 is a container lid equipped to cover the upper opening of container 3;
A cutter 5 has a cutting blade 6 and is rotated at high speed by an electric motor 2, and is installed inside the container 3.

7 is a power transmission pulley, 8 is a power transmission belt, 9 is a main shaft fixed to the power transmission pulley 7, and the container 3
A cutter 5 is detachably attached to the shaft end that protrudes inward.

10 is a lip forming part of the outer periphery of the container lid 4;
When properly installed, the tip of the lip enters the main body 1 as shown in the figure, and a pressing force is transmitted via the lever 11 to the actuator 12 made of an elastic body.

13 is an auxiliary return spring.

14 is a power switch, and the first micro switch 1
5 is connected in series.

Reference numeral 16 denotes a second microswitch, which is a changeover switch for a brake circuit that reverses the field of the electric motor 2 to provide a braking effect.

The microswitches 15 and 16 have exactly the same structure, and one is stacked upside down so that the operating parts 17 and 18 of the microswitches are not on the same straight line. Also, actuator 1 of elastic body
2 has one end connected to each operating portion 1 from the point of action of the lever 11.
Operating pieces 19 and 20 having different span lengths up to 7 and 18 are in contact with the operating points of the microswitches 15 and 16, and the other end is supported by a rib 21 of the main body 1. In the above configuration, from the state shown in FIG. 2 to the state shown in FIG. 3, that is, at the moment when the container lid 4 is attached, the pressure applied by the lip 10 is applied to the actuator 12 via the lever 11, and the shorter operation piece 20 has a higher rigidity. Because of the high pressure, first press the operating part 18 of the microswitch 16 to release the brake circuit, then continue to press it.

In the meantime, the less rigid, that is, longer, operation piece 19 pushes the operating part 17 of the microswitch Al5, and the power is turned off.
Become N. Conversely, at the moment of transition from FIG. 4 to FIG. 2, that is, the moment when the container lid 4 is removed, the microswitch 15 is first released, then the microswitch 16 is closed and the brake is activated. Effects of the Invention As is clear from the description of the embodiments above, the safety device for a cooker of the present invention can control the opening/closing operation of a cooker having switches for the power supply and brake circuits by stacking switches of the same structure and controlling different spans. A simple method of arranging an actuator with a long operation piece enables reliable and appropriate time delay, which greatly contributes to downsizing of cookers, lowering costs, and easing management. It is.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, and FIG. 1 is a partially sectional front view, FIG. 2 is a plan sectional view of the actuator portion when the container lid is opened, and FIG. 3 is a partially sectional front view. FIG. 4 is a front view of the actuator section viewed from direction A in FIG. 2, and a plan cross-sectional view of the actuator section when the container lid is attached. 1... Main body, 2... Electric motor, 3... Container, 4...
・Container lid, 5... Cutter, 6... Cutting blade, 12.
...Actuator, 14...Power switch, 15,
16...Micro switch, 17, 18... Operating part, 19, 20... Operation piece.

Claims (1)

[Claims] 1 A built-in electric motor includes a main body, a container placed on the main body, a cutter having a cutting blade and driven inside the container by the electric motor, a container lid that covers the upper opening of the container, and a container lid. It is equipped with a switch that opens and closes the power supply and the brake circuit of the electric motor in response to opening and closing, and an actuator made of an elastic body that is operated by the container lid and opens and closes the switch.The switches are of the same structure, and each operating part is A safety device for cooking appliances that are stacked one above the other so that they are not along the same straight line, and each operating part of the cooking appliances is operated by operating pieces of the actuator having different spans.