JPH0661480B2 - Electric meat grinder - Google Patents

Description

Description: FIELD OF THE INVENTION The present invention relates to an electric meat grinder used for general household and commercial use.

Structure of Conventional Example and Its Problems Generally, in an electric meat grinder, a rotating screw makes a mutton fine. That is, a mutton or the like was thrown into the screw cover in which the screw was rotating inside, and the mutton was finely divided while moving inside the screw cover by the screw.

However, when a large amount of mutton or the like is thrown into the screw cover or when a spoon or the like is erroneously thrown, the mutton or spoon is clogged inside the screw cover and the screw is overloaded, and the screw eventually stops. In order to eliminate this condition, the screw cover had to be disassembled, which was extremely inconvenient.

SUMMARY OF THE INVENTION In view of the above problems, the present invention provides an electric meat grinder that can easily eliminate clogging when a screw is excessively loaded and cannot rotate.

In order to achieve the above-mentioned object, the electric meat grinder of the present invention is a two-pole double-thrower in which a switch of a motor for driving a screw is arranged in parallel with a push-button type first and second switch.
When the first switch is pushed in, the double-type switch engages and holds the first operating plate of the switch with the sliding plate and closes the first both poles to rotate the electric motor forward. When the second switch is operated and the second switch is pushed in, the second operating plate of this switch releases the engaged state between the first operating plate and the sliding plate and opens the first both poles during the pushing. Stop the electric motor, and press the second switch again to close the second both poles to flow a current reverse to that of the normal rotation operation to cause the electric motor to rotate in the reverse direction and perform the pressing operation. The reverse operation of the electric motor is performed only during the operation.

Therefore, even if the screw does not rotate due to excessive load during operation (normal rotation), the operation of the electric motor can be stopped by pushing the second switch to restore (off state) the first switch. You can do it, and press it again to turn on the second switch,
As a result, a reverse current is applied to the electric motor to reversely rotate the screw, and this reverse rotation operation can be arbitrarily performed only while the second switch is pushed in, and the clogging of the load is easily eliminated. be able to.

Description of Embodiments One embodiment of the present invention will be described below with reference to FIGS.

In the figure, a screw 5 is attached to a rotary shaft 4 of a meat grinder main body (hereinafter abbreviated as the main body) 3 in which an electric motor 1 and a speed reducer 2 are installed, the screw 5 is covered, and a screw cover 7 having a charging cylinder 6 is provided. It is attached to the main body 3. A fixed blade 8 fixed to the screw cover 7 and a rotary blade 9 that rotates together with the screw 5 are provided at the tip of the screw cover 7. Further, on the upper part of the main body 3, there is provided a double-pole double-throw double-pole switch in which two push-button type switches for controlling the electric motor 1 are integrally arranged side by side. The first switch 10 for making the rotation and the second switch 11 for making the reverse rotation having the second switch 11 for making the reverse rotation reverse the electric motor 1 only while they are being pushed. Note that 32k is a return spring for the first and second switches 10 and 11, and 32g is a fixed contact plate.

Next, the first switch 10 and the second switch
The switch 11 will be described in detail.

In FIGS. 2 and 3, when the first switch 10 is pushed in, the first operating plate 12 moves the sliding plate 13 and pushes the operating piece 14 downward. At this time, the operating piece 14 closes the contact plates 15 and 16 of the first bipolar electrodes to form the circuit shown in FIG. 4 (a) to rotate the electric motor 1 in the normal direction. Further, at this time, the sliding plate 13 engages with the protrusion 17 thereof, so that the operating plate 1
2 is maintained and the first switch 10 is kept in the ON state. Next, when the second switch 11 is pressed, the operating plate 18 moves to the sliding plate 13
Is moved to release the engagement of the operating plate 12 by the protrusion 17 to put the first switch 10 in the return state and turn it off. When the second switch 11 is pushed in again, it is shown in FIG.
As shown in (b), the operating piece 19 is the second bipolar contact plate 2
0, 21 are closed, which causes a reverse current to flow and the motor 1
Reverse.

Next, the operation of the electric meat grinder having the above configuration will be described. First, when the mutton is inserted into the screw cover 7 through the insertion hole 6 and the first switch 10 is pushed in, the first switch 10 is locked and the electric motor 1 continues to be turned on. If the user throws in too much material such as mutton or mistakenly throws in a spoon or the like, the load applied to the electric motor 1 becomes very large, and eventually stops. However, if the second switch 11 is pushed in here and the first switch 10 is turned off, and the electric motor 1 is further reversed, the screw 5 is also reversed, and the material and spoon stuck in the screw part can be removed. Since the second switch 11 does not lock, the electric motor 1 does not continue to rotate in the reverse direction but only reverses while the second switch 11 is being pressed. It is also possible to prevent the cover 7 from being pressed against the main body 3 side.

EFFECTS OF THE INVENTION According to the electric meat grinder of the present invention as is apparent from the description of the above embodiments, even if the mutton, spoon, or the like is clogged in the screw cover, it can be immediately operated by only the push button depending on the load state. The clogging can be arbitrarily released by stopping the operation or reversing as much as necessary, and by using the double switch, it is possible to realize an inexpensive and very easy-to-use one.

[Brief description of drawings]

FIG. 1 is a partial cross-sectional side view of an electric meat grinder according to an embodiment of the present invention, FIG. 2 is a side view of a dual-type switch of the electric meat grinder, and FIG. 3 is a contact plate of the switch. Partial plan view of section 4,
Figures (a) and (b) are circuit diagrams of the motor during normal rotation and reverse rotation. 1 ... electric motor, 3 ... meat grinder main body (main body), 4 ... rotary shaft, 5 ... screw, 7 ... screw cover, 10
...... First switch, 11 ... Second switch.

Claims (1)

[Claims] 1. A screw which is detachably fitted to a rotating shaft of an electric motor provided in a meat grinder main body, and a screw which is detachably attached to the meat grinder main body and is rotatably held with the screw inside thereof. A two-pole double-throw dual-type switch in which push-button type first and second switches for controlling the electric motor are integrally arranged side by side is provided. , When the first switch is pushed in, the first operating plate of this switch is engaged with and held by the sliding plate and the first both poles are closed to operate the electric motor in the normal direction, and when the second switch is pushed in. The second operating plate of this switch releases the engagement state between the first operating plate and the sliding plate, opens the first both poles to stop the electric motor, and turns off the second switch. Push it again Electric meat grinder which is adapted to the reverse operation of the motor only while the forward rotation closes the second poles are the pressing operation causes reverse operation of the motor by flowing reverse current by.