JPS61181415A - Electromotive cooker - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention mainly relates to an electric cooker for cooking fruits, vegetables, etc.

Conventional technology Generally speaking, the number of revolutions of the cutter when squeezing juice is approximately 6.
000 rotations, so conventionally the motor rotation speed was reduced using a reduction gear. However, if a reduction gear was used, the main body would be extremely large.

Therefore, the present inventors have considered an electric cooker in which the rotation speed of the motor is controlled by an electronic circuit, and the motor and cutter are directly connected without a speed reduction device.

Hereinafter, such an electric cooker will be explained using a juicer as an example and one drawing.

In FIG. 5, a motor 2 whose rotational speed is controlled by an electronic circuit section 7 is provided at the inner bottom of the main body 1.

A container 6 in which a spinner 6 is rotatably provided is placed on the top of the main body 1, and a drive shaft 3 of the motor 2 is connected to the spinner 6 via a coupling 4.

Problems to be Solved by the Invention However, with the above configuration, if the control device such as the electronic circuit section 7 malfunctions or breaks down for some reason, the motor 2 will be rotated at a speed of 15. The spinner rotates at a high speed of approximately OOOrpm without being decelerated, and the centrifugal force acting on the outer periphery of the spinner 6 causes problems such as the cutter 64 being lifted up and parts such as the container 5 or the container lid 8 being destroyed.

Therefore, the present invention is designed to immediately cut off the current when the above abnormality occurs and prevent the motor from rotating at high speed.

The means for solving the problem and the technical means of the present invention for solving the problem are as follows:
It has a motor that rotates the caster with its rotation speed controlled by a control unit, a leaf spring fixed to the drive shaft of the motor, and a wire connected in series with the winding of the motor, and the leaf spring rotates the caster. The leading side with respect to the direction is inclined toward the wire side, and a blade portion is provided on the wire side, and the wire is provided within a locus in which the blade portion rotates when the motor has an uncontrolled rotation speed. It is.

action The effect of this technical means is as follows.

In other words, in the case of normal rotation where the rotation of the motor is normally controlled, the leaf spring will only be slightly displaced by the wind force, but when the motor rotates at high speed, the leaf spring will be displaced by the force of the wind force against the inclination. The blade moves in the direction of the wire, causing the blade to cut the wire and interrupt the current. Therefore, the rotation of the motor is stopped, and the dangerous situation of high-speed rotation is avoided.

EXAMPLE Hereinafter, a juicer which is an example of the electric cooking device of the present invention will be described based on the accompanying drawings.

In FIGS. 1 to 4, a container 20 and a container lid 21 are shown at the top.
A motor 11 controlled by an electronic circuit section 22 is held inside the main body 10 on which the container 2o and the spinner 14 and cutter 23 in the container lid 21 are connected to the drive shaft 12 of the motor 11 via a coupling 13. are mated. A plate spring 17 is provided on a drive shaft 12 protruding from a frame 16 at the bottom of the motor 11 with an insulator 16 interposed therebetween. This leaf spring 17 is curved in the opposite direction to the frame 15, and the leading side with respect to the rotation direction is twisted toward the frame 15 side. Further, the tip of this leaf spring 17 forms an acute angle with respect to the middle upper line of the drive shaft 12, and is bent toward the frame 15, so that the blade portion 1R2Lf
is forming.

On the other hand, on the lower surface of the frame 16 and near the blade part 17, a non-conductor wire mounting plate is installed, and the wire 19 connected in series with the motor windings is installed on the wire mounting plate. is stretched.

Next, the operation of the above configuration will be explained. When voltage is applied to the motor 11 and the drive shaft 12 rotates, the spinner 1
4 and the cutter 23 rotate to cut the objects inside the container 20 and the container lid 21. At this time, the leaf spring 17 is displaced by the action of centrifugal force in a direction in which the bending is eliminated, and at the same time, due to the wind force, the leaf spring 17 attempts to approach a shape in which the twisting is eliminated. When the motor 11 is normally rotating and when the electronic circuit 22
When the wire 19 rotates at an abnormally high speed due to a malfunction or failure, the displacement of the latter is clearly large, and when the wire 19 rotates at an abnormally high speed, the wire 19 is cut by the blade part 1 of the leaf spring 17. . Therefore, the current flowing to the motor 11 is cut off and high speed rotation is prevented. This makes it possible to avoid a dangerous situation in which the spinner 14 and cutter 23 rotate at high speed and the container 20, container lid 21, etc. covering the upper part of the main body are destroyed.

In the above embodiment, a curved leaf spring 17 is used, but this is to make full use of the centripetal force and to reduce the noise of the leaf spring 17's operation. Needless to say, it will be sufficiently deformed by the wind force.

Effects of the Invention As is clear from the description of the embodiments above, the electric cooking appliance of the present invention attaches a leaf spring to the drive shaft of the motor, and utilizes the wind force generated during rotation to cut the wires conducting to the motor windings. This makes it possible to cut off the current and prevent dangerous situations such as destruction of parts during abnormally high speed rotation.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of the essential parts of a juicer showing an embodiment of the present invention, Fig. 2 is an enlarged plan view of the essential parts of the juicer, Fig. 3 is a vertical sectional view of the juicer, and Fig. 4 is a conventional juicer. FIG. 2 is a longitudinal sectional view of the juicer. 11...Motor, 12...Drive shaft, 17...
Leaf spring, 172L...Blade part, 19...Wire. Name of agent: Patent attorney Toshio Nakao and 1 other person12
---, familiarity 17 --- fierce baki t't 111 sword (P +8 ---wazu?-tori) ding ■ and f'/
fQ---Wire Fig. 2 +1-- (-G2j--1vl - Fig. 4

Claims (1)

[Claims] It has a motor that rotates the cutter with its rotation speed controlled by a control unit, a leaf spring provided on the drive shaft of this motor, and a wire connected in series with the winding of the motor, and the leaf spring rotates the cutter. A leading side with respect to the direction is inclined toward the wire side, and a blade portion is provided on the wire side, and the wire is provided within a locus in which the blade portion rotates when the motor rotates at a certain number of revolutions or more. Electric cooker.