JPH0427478Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a cooking machine that processes foods such as meat and vegetables using a rotating cutter.

BACKGROUND ART Conventionally, it is well known to cause a mixer to perform automatic intermittent operation.

Automatic intermittent operation is an operation that automatically energizes the motor intermittently.By energizing the motor, the motor rotates, and by reducing or turning off the energization, the motor rotates. It is to automatically repeat the operation of reducing or stopping the rotation of the motor.

FIG. 3 shows an example of the relationship between the voltage (actual value) applied to the motor and time in the case of intermittent operation.

In the figure, A is on time and B is off time, and both A and B are usually in the range of 0 to several seconds. FIG. 4 shows an example of the relationship between time and the rotational speed of the electric motor during intermittent operation and continuous operation. C is the relationship between time and the rotational speed of the motor during continuous operation, D is during intermittent operation, and E is approximately the average value during D. Point F is the point at which the operation starts. During continuous operation, it will reach a nearly steady state after a certain period of time, although this will vary depending on the load condition.

During intermittent operation, the number of revolutions increases when electricity is applied, although it varies depending on the cycle of A and B and the load condition.
It repeats a cycle in which the rotational speed decreases when electricity is cut off, and the average rotational speed is much lower than in the steady state during continuous operation.

A mixer has two cutters (upper and lower) rotatably fixed to the bottom of a container, and an electric motor rotates the cutters at high speed.
It involves placing liquid ingredients such as water or milk in a container, finely pulverizing and stirring the ingredients, and preparing drinks or cooking. A mixer rotates a cutter at high speed, mainly utilizing circulation of a liquid material, to finely grind a solid material. Therefore, mixer cutters are made to be suitable for high-speed rotation of about 10,000 revolutions per minute. In other words, the length of the cutter is designed to be as short as possible within the allowable range of performance so as not to apply too much load during operation, and the upper and lower cutters are designed to cut the material as many times as possible. In both cases, mixer cutters are characterized by having blades on either side of the center of rotation. Mixers are designed to use the circulation of liquid ingredients to finely grind solid ingredients, so they can be used for cooking mainly drinks, etc.
It is good at cooking liquids such as soups and dressings. Mixers require high-speed rotation, and it has been difficult to prevent the cutters from coming off even at high speeds, so there has never been a case where only the cutters can be attached and detached.

Problems that the invention aims to solve: When cooking with automatic intermittent operation, if the pause time during intermittent operation is long depending on the completion of the cooking, it is easy to mistake the switch for turning off when the machine stops. The user mistakenly assumes that the switch is turned off during the downtime during intermittent operation, removes the container and touches the rotating parts, and the rotating parts suddenly start rotating during the operation cycle during intermittent operation. However, in the past, during automatic intermittent operation, the electric motor would open and close in conjunction with the attachment/detachment of the container to/from the main body, and even if the main switch was on when the container was removed from the main body, There is no example of a switch having a switch that prevents it from rotating, and safety during intermittent operation becomes an issue.

Means for Solving the Problems The present invention was made to solve the above-mentioned problems with conventional cooking machines.By using an automatic intermittent operation circuit, cooking is done efficiently and the container is It is equipped with a sub-switch that opens and closes in conjunction with the attachment/detachment of the container to/from the main body, and is connected in series with the main switch so that the electric motor does not rotate even if the main switch is on when the container is removed from the main body. It is something.

Function The automatic intermittent operation circuit keeps the cutter's average rotational speed lower than during continuous operation. By repeating high and low rotational speeds, the material moves up and down and is pulverized uniformly. When the container is removed from the main unit during intermittent operation, the sub-switch is turned off and the motor does not rotate.

Embodiment Hereinafter, an embodiment of the present invention will be described with reference to the drawings. The configuration of the embodiment is as shown in FIGS. 1 and 2.

Reference numeral 1 denotes a main body incorporating an electric motor 2, a main switch 3 for controlling the electric motor 2, a micro switch 4 as a sub-switch, etc.; 5 a container detachably placed on the upper part of the main body 1 for storing and cooking food; , 6 is a lid of the container 5, and 7 is a known automatic intermittent operation circuit. Main switch 3 and micro switch 4 are connected in series. The main switch 3 can select either a continuous operation circuit 7A (known) or an automatic intermittent operation circuit 7. Electric motor 2
A drive-side coupling 9 is fixed to the tip of the rotating shaft 8, and a bottom plate 10 is fixed to the bottom of the main body 1. An operating rod 14 that is vertically movable via an operating spring 13 is fixed to the upper part of an operating button 12 of a micro switch 4 built into the main body 1. The actuating rod 14 is urged upward by the actuating spring 13.

The container 5 includes a storage portion 15, a tip base 16, a bearing portion 18, a handle 21, and the like. A bearing portion 18;
The bottom part 19 of the accommodating part 15 is sandwiched between the top base 16 and a gasket 17, and is fixed with screws 20. On the side of the container 5, a handle 21 has an upper part fastened to the container 5 with a nut 23 and a screw 24, and a lower part fixed to the container 5.
It is fixed by tightening the screw 25. A push rod 26 is provided between the housing portion 15 and the handle 21.
is clamped so as to be vertically movable, and the lower part of the push rod 26 is urged upward by a coil spring 27. A slider 40 is fixed to the upper part of the handle 21 so as to be slidable in the horizontal direction, and is biased in the outer circumferential direction by a coil spring 41. The slider 40 has a locking body 4 on the top surface.
8 is formed. The bearing portion 18 includes an oil seal 53 and a bearing metal 54. An engaging body 57 for removably fixing the cutter 11 is formed on the shaft 55, and a tip portion 56 of the shaft 55 projects above the engaging body 57. shaft 55
A driven side coupling ring 61 is fixed to the lower end of. The outer periphery of the lid 6 has a recess 35.
It has an engaging part 36 at a position almost symmetrical to 5, and has a pituitary gland 37 inside thereof. The engaging body 57 includes
The cutter 11 is detachably attached and fixed. The cutter 11 consists of an upper cutter 64 and a lower cutter 65 made of corrosion-resistant metal.
There is a gap H between the upper cutter 64 and the lower cutter 65.

The operation of this embodiment having the above configuration will be explained.

First, the state in which the cutter 11 is attached will be explained. The cutter 11 is attached to the shaft 55 in the container 5.
and put the material into the container 15. The lid 6 is placed on the upper part of the accommodating part 15 so that the recess 35 fits with the outer peripheral edge 34 of the accommodating part 15, and the engaging part 36 is
The lid 6 is locked by the locking body 48 of the slider 40.
is fixed to the housing part 15. Outer periphery 34 and recess 35
The engagement portion 36 is connected to the locking body 4 with the engagement point as a fulcrum.
As the lid 6 is moved downward while contacting the locking member 8 , the engaging portion 36 presses the locking body 48 inwardly, and the slider 40 resists the biasing force of the coil spring 41 and moves inwardly, that is, , the slider 40 moves toward the center of the container 5, and the slider 40 returns to the outside by the biasing force of the coil spring 41, and the engaging portion 3
6 and the locking body 48 engage with each other. At this time, the lid 6
The pituitary gland 37 connects the upper end of the push rod 26 with the coil spring 2.
Push down against the urging force of 7. By placing the container 5 on the main body 1, the driving side coupling 9 and the driven side coupling 61 are fitted, and the rotation of the rotation shaft 8 is caused to rotate through the shaft 55 to the cutter 11.
transmitted to. Further, since the push-down rod 26 is in a depressed state against the urging force of the coil spring 27, the lower end of the push-down rod 26 pushes down the actuation rod 14 against the urging force of the actuation spring 13, and the micro switch is activated. By pressing the operation button 12 of 4, the micro switch 4 is closed, and by turning on the main switch 3, the micro switch 4 is ready for operation at any time.

In the case of the cutter 11, a solid material and a liquid material are mainly put together, and the solid material is crushed and cut by the cutter 11 while being circulated together with the liquid material due to the circulating flow of the liquid material.

After the material has been finely cut and crushed and the operation has finished, the lid 6 is removed and the cut material is transferred to another cup or container. When removing the lid 6, if you press the outer peripheral side of the slider 40 toward the center of the container 5, the engaging portion 36
and the locking body 48 are disengaged, and the lid 6 is pushed upward via the push-down rod 26 by the biasing force of the coil spring 27. When the lid 6 is removed, the push rod 26 that was pressed by the pituitary gland 37 is released, so the push rod 26 and the operating rod 14 are released.
are the coil spring 27 and the actuation spring 1, respectively.
3, the micro switch 4 is pressed upward.
Even if the actuation button 12 is opened and the main switch 3 is turned on, the electric motor 2 will not rotate. Also, when the container 5 is removed from the main body 1 while the lid 6 is attached to the container 5, the operating rod 14 is pressed upward by the operating spring 13, and the operating button 1
2 is opened and the main switch 3 is turned on, the electric motor 2 does not rotate. After the object to be cut is transferred to another container, the cutter 11 is removed from the shaft 55.

According to the embodiment, using the automatic intermittent operation circuit,
Since the cutter is rotated, the average rotational speed can be kept lower than during continuous operation, and a rotational speed suitable for crushing and cutting the material can be obtained. In addition, automatic intermittent operation accelerates and decelerates the rotation of the cutter, causing the material to move up and down, allowing the cutter to evenly contact the material and crushing and cutting the material evenly.
You can cook efficiently.

In addition, if you take a long pause time during intermittent operation to match the completion of cooking, it is easy to mistake the switch for turning off when the pause occurs, but the main switch that selects the automatic intermittent operation circuit and the main switch for the main body of the container Since the sub-switch, which opens and closes in conjunction with the connection and disconnection, is connected in series, downtime during intermittent operation is reduced.
Even if the user mistakenly assumes that the switch is turned off and removes the container and touches the rotating parts, the sub-switch will turn off and the automatic intermittent operation circuit will be cut off, so the rotating parts will not start rotating and will be safe. be.

Effects of the invention As described above, according to the invention, by using the automatic intermittent operation circuit, efficient cooking can be performed, and even if the main switch is on when the container is removed from the main unit, it will not start cooking. It is possible to provide a highly safe cooking machine without the parts starting to rotate.

[Brief explanation of drawings]

Fig. 1 is a sectional view of a container showing an embodiment of the present invention, Fig. 2 is a sectional view of the main body of the same, Fig. 3 is a diagram showing the relationship between time and voltage applied to the motor in the conventional and the present invention. FIG. 4 is a diagram showing the relationship between the same time and the rotation speed of the electric motor. 1...Main body, 2...Electric motor, 3...Main switch, 4...Sub switch, 5...Container, 7...Automatic intermittent operation circuit, 11...Cutter.

Claims (1)

[Scope of utility model registration request] An automatic intermittent operation circuit 7, an electric motor 2 whose operation is controlled by the automatic intermittent operation circuit 7, a main switch 3 that opens and closes the automatic intermittent operation circuit 7, a main body 1 containing the electric motor 2, and a cutter 11 driven by the electric motor 2. A container 5 with a built-in container 5, and a sub-switch 4 that opens and closes in conjunction with the attachment and detachment of the container 5 to the main body 1,
A cooking machine characterized in that a main switch 3 and a sub-switch 4 are connected in series.