JP2003245209A - Electric cooker - Google Patents

Abstract

(57) [Problem] To improve the operability of a circuit protector as a safety device. SOLUTION: The operation of a switch unit 5 rotates a cutter 7 interlocked with an electric motor 4 to cut a material in a glass container 1. If the cut material has a load greater than a specified material, the electric motor 4 is cut. When the current flowing through the motor increases and exceeds a certain specified value, the circuit protector 8 for detecting overcurrent provided in series with the motor 4 operates, the contacts in the circuit protector 8 open, and the motor 4 is energized. In the electric cooker in which the circuit protector 8 is stopped, the circuit protector 8 does not return to its original state once it has been operated unless the operation lever 9 is pressed, and the switch unit 5 for controlling the electric motor 4 and the The operation lever 9 of the circuit protector 8 is interlocked, and each time the switch unit 5 is stopped, the operation lever 9 is pushed to release the circuit protector. An electric cooker for performing the return operation of 8.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to improvements in electric cookers such as mixers used in ordinary households.

[0002]

2. Description of the Related Art A conventional electric cooker of this type generally has a structure as shown in FIG.

In FIG. 5, a cutter 7 is provided in a cylindrical glass container 1 and an electric motor 4 is provided inside a main body 2. By a pressing operation of a switch portion 15 provided on the main body 2,
The cutter 7 linked to the electric motor 4 rotates, and the glass container 1
The ingredients inside are cut and cooked.

At this time, when the material to be cut is a heavier load than the specified material, the current flowing through the electric motor 4 increases,
When the specified value is exceeded to some extent, the circuit protector 16 provided in series with the electric motor 4 for detecting the overcurrent operates, and the contacts inside the circuit protector 16 open.
It is configured to stop energization of the electric motor 4.

Once the circuit protector 16 is operated, it cannot return to its original state unless the operation lever 17 is pushed. Therefore, the overload is mistakenly applied and the contact of the circuit protector 16 is opened. If it does, the power cannot be supplied to the electric motor 4 again without turning on the contact of the circuit protector 16 by manually pushing the operating lever 17 and energizing the switch portion 15. Even in the state, the structure was such that the electric motor 4 could not be moved.

Further, since the operating lever 17 is unnecessary during normal operation, it is often provided on a hard-to-see portion such as the bottom of the main body 2.
It was necessary to remove the glass container 1 once, turn the main body 2 upside down, insert a finger into the operation lever 17 at the bottom, and push it.

[0007]

In the structure of the prior art, when the circuit protector, which is a safety device, is operated, the glass container is removed each time and the body is turned upside down. It was necessary to insert the device, push the operating lever, and make it ready for use again.

Therefore, when the circuit protector is operated again during use, it is necessary to perform the same operation again, which not only makes it very difficult to use in terms of operation, but also unknowingly causes overload and operation. In the case of accident, the user may mistakenly consider that the product is out of order, or send the product for repair, or store it without using it, or in the worst case, dispose of the product. Had caused.

Further, when the operating lever is pushed with the glass container attached or with the glass container removed, if the power is still on, the cutter or the coupling suddenly starts to rotate, which is very dangerous. It was a thing.

[0010]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, according to the present invention, when a circuit protector for detecting an overcurrent provided in series with an electric motor operates, a cut button of a switch section is moved downward. By pushing, the operation lever of the circuit protector is pushed at the same time, and the return operation of the circuit protector is performed by this operation. That is, even when the bimetal in the circuit protector is reversing due to an overcurrent, it is possible to restore the original state by operating the switch section.

As described above, according to the above-described structure, the cut button of the switch portion and the operation lever of the circuit protector are interlocked with each other, so that the operation of returning to the original state even when the circuit protector is operated is cut off each time. In order to perform when the button is pressed, the user can naturally perform the return operation of the circuit protector by normal operation, even if it is overloaded without knowing it, even if it is operated, Since the user automatically restores the product, there is no need to send the product for repair, to leave it unusable, or to dispose of the product in the worst case, so that the problem can be solved.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION According to the present invention, a cutter is provided in a cylindrical glass container and an electric motor is provided inside the main body, and a cutter linked to the electric motor is rotated by the operation of a switch portion provided on the main body. , The material in the glass container is cut,
When the material to be cut has a heavier load than the specified material,
When the current flowing through the motor increases and exceeds a certain specified value, the circuit protector for detecting overcurrent provided in series with the motor operates, the contact inside the circuit protector opens, and the energization of the motor is stopped. In such an electric cooker, the circuit protector has a structure that once it operates, it will not return to its original state unless the operation lever is pushed.There is a switch part for controlling the motor and the operation lever of this circuit protector. This is an electric cooker in which the circuit protector is restored by pressing the operating lever each time the switch section is stopped.

As a specific embodiment, in claim 2, when the cut button of the switch portion is pushed downward,
The operating plate inside the switch moves laterally and presses the operating lever of the circuit protector, so that the bimetal in the circuit protector can be reversed to the original state due to overcurrent. It is a thing.

According to the third aspect of the present invention, when the cut button of the switch portion is pressed downward, the cut button mounting lever directly presses the circuit protector operating lever, and the bimetal in the circuit protector is damaged by overcurrent. The reverse operation is performed so as to restore the original state.

Further, in claim 4, when the cut button of the switch section is pushed downward, the operating plate inside the switch section moves laterally, and the connecting lever interlocking with the operating plate expands the operation of the operating plate. It is operated, the lever for operating the circuit protector is pressed, and the bimetal in the circuit protector is reversing due to overcurrent,
The operation for returning to the original state is performed.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to the drawings. FIG. 1 is a partially sectional front view of an electric cooker showing an embodiment of the present invention. FIG. 2 is also a detailed view of the switch section. FIG. 3 is a partially sectional front view of an electric cooker according to another embodiment, and FIG. 4 is a partially sectional top view of yet another embodiment.

In the figure, 1 is a cylindrical glass container, and 2 is a main body. A cutter base 3 is detachably provided in a lower portion of the glass container 1, and a motor 4 is provided inside the main body 2 and a switch portion 5 is provided on an upper surface of the main body 2. By operating the on / off button 5b of the switch unit 5, the electric motor 4 is energized, the electric motor 4 and the coupling 6 connected thereto are rotated, and further provided rotatably at the center of the cutter table 3 connected to the coupling 6. The material cutting cutter 7 is rotated, and the material in the glass container 1 is agitated and cut to form liquid drinks. In addition, 5c is a flash button.

In this structure, when the material to be cut in the glass container 1 has a heavier load than the specified material, the electric motor 4 does not heat up and do not emit smoke. When the value exceeds the specified value, the circuit protector 8 for detecting overcurrent provided in series operates to stop energization.

A bimetal actuating lever 8b is arranged in the circuit protector 8, and the actuating lever 8b is heated by an overcurrent and performs a reverse bending operation to open a contact 8a at the end of the actuating lever 8b. By operating it, the power supply to the electric motor 4 is controlled. In addition, the circuit protector 8 is provided with an operating lever 9, and once the operating lever 8b, which is a bimetal, operates, it does not automatically return unless the operating lever 9 is pushed.

Therefore, when the circuit protector 8 is operated, the operating plate 10 inside the switch section 5 is moved laterally by pressing the cut button 5a of the switch section 5 downward (operation of turning off the power supply in the normal state). Since the operation lever 9 of the circuit protector 8 and the operation of the switch unit 5 are interlocked with each other, the operation lever 9 of the circuit protector 8 is pushed each time the stop operation is performed, and the circuit protector 8 The configuration is such that the return operation is performed naturally.

Next, the operation of this embodiment will be described.

First, materials and liquids are put into the cylindrical glass container 1 and the upper lid of the glass container 1 is covered.
Next, the glass container 1 covered with a lid is placed on the main body 2, a power cord (not shown) is inserted, and the input button 5b of the switch unit 5 is pressed to energize the electric motor 4 and to disengage the coupling 6. The cutter 7 is rotated through this. Cutter 7
The material is cut while being stirred, and after about 1 minute, the material in the glass container 1 is finely crushed and becomes liquid with water.

In this state, when the material to be cut in the glass container 1 is a heavier load than the specified material, the current flowing through the electric motor 4 increases, and when it exceeds a certain specified value, it is connected in series to the electric motor 4. Operating lever (bimetal) 8b in the circuit protector 8 for overcurrent detection provided
Is heated and reverses, the contact 8a in the circuit protector 8 is opened, and the energization of the electric motor 4 is stopped.

At this time, the circuit protector 8 has a structure in which once it is operated, it cannot be returned unless the operation lever 9 is pushed. Therefore, by pushing the cut button 5a of the switch portion 5 downwardly, By making the operating plate 10 inside the switch section 5 move laterally,
The operation lever 9 of the circuit protector 8 and the operation of the switch portion 5 can be interlocked, and every time the stop operation is performed, the operation lever 9 of the circuit protector 8 is pushed each time, and the returning operation of the circuit protector 8 is naturally performed. Will be done.

Next, another embodiment will be described with reference to FIG.

In FIG. 3, reference numeral 5 is a switch section.
Reference numeral a is a cut button, and reference numeral 5d is a mounting lever that supports the cut button 5a. 8 is a circuit protector, 9
1 is an operating lever, which is similar to that shown in FIG. 1 but has a different mounting position relationship with the switch unit 5. The other configurations are the same as those in FIG.

In such a structure, when the circuit protector 8 operates by detecting an overcurrent, the mounting lever 5d is directly pressed by pressing the cut button 5a as in the case of FIG. 1, and the operating lever 9 of the circuit protector 8 is operated. Is pressed to restore the bimetal in the circuit protector 8 to the original state and close the contacts.

Another embodiment will be described with reference to FIG.

In FIG. 4, reference numeral 5 denotes a switch section.
a is a cut button. 8 is a circuit protector,
Reference numeral 9 is an operating lever, and 11 is a connecting lever that connects the operating plate 10 of the switch unit 5 and the operating lever 9. The connecting lever 11 enlarges the operation of the operating plate 10 and transmits it to the operating lever 9. The other configurations are the same as those in FIG.

In such a structure, when the circuit protector 8 detects an overcurrent and operates, the operating plate 10 is pressed by pushing the cut button 5a, as in FIG.
The connecting lever 11 that moves laterally and interlocks with the operating plate 10.
Thereby, the movement of the operating plate 10 is enlarged and the operating lever 9 is pressed. This action causes the circuit protector 8
The inner bimetal is restored to its original state and the contacts are closed.

By the returning operation of the circuit protector 8, the bimetal in the circuit protector 8 detects an overload or the like without the user's knowledge, and the original state is restored even if the reversing operation is performed. The operation to be performed can be performed only by pressing the cut button 5a of the switch unit 5.

[0032]

As described above, according to the present invention having such a structure, the operation of the cut button of the switch portion and the operation lever of the circuit protector to interlock with each other causes the circuit protector to return to its original state when it operates. In order to do so every time the cut button is pressed, the user can naturally perform the return operation of the circuit protector in the normal operation, and it will be overloaded and operated without the user's knowledge. In the event of a loss, the user will automatically resume the operation and will not send the product for repair, leave it unusable, or at worst dispose of the product. The effect can be expected.

Also, when the circuit protector is restored, the power is always cut off, so that accidents such as sudden rotation of the cutter are eliminated, safety is improved and usability is also improved.

[Brief description of drawings]

FIG. 1 is a partially sectional front view showing an embodiment of an electric cooker according to the present invention.

FIG. 2 is also a detailed view of a switch section.

FIG. 3 is a partially sectional front view showing another embodiment of the same.

FIG. 4 is a partial cross-sectional top view showing still another embodiment.

FIG. 5 is a partially sectional front view showing a conventional electric cooker.

[Explanation of symbols]

1: glass container, 2: body, 4: electric motor, 5: switch part, 5a: cut button, 5d: mounting lever, 7: cutter, 8: circuit protector, 8a: contact, 8
b: operating lever (bimetal), 9: operating lever, 1
0: operating plate, 11: connecting lever.

Claims (4)

[Claims] 1. A switch (5) provided on the body (2), wherein a cutter (7) is provided in a cylindrical glass container (1) and an electric motor (4) is provided inside the body (2). By the operation of, the cutter (7) that is interlocked with the electric motor (4) is rotated, the material in the glass container (1) is cut, and when the material to be cut is a heavier load than the specified material, the electric motor (4) ) Increases and exceeds a certain specified value, a circuit protector (8) for detecting an overcurrent provided in series with the electric motor (4) operates and contacts () inside the circuit protector (8) are activated. In the electric cooker in which 8a) is opened and the electric power of the electric motor (4) is stopped, once the circuit protector (8) operates, it cannot be restored unless the operation lever (9) is pushed. The structure is Each time the switch portion (5) for controlling the motive (4) and the operation lever (9) of this circuit protector (8) are interlocked and the switch portion (5) is stopped, the operation lever (9) An electric cooker characterized by pressing to cause the circuit protector (8) to return. 2. The cut button (5a) of the switch part (5)
When is pressed downward, the operating plate (10) inside the switch part (5) moves laterally, and the operating lever (9) of the circuit protector (8) is pressed, and the bimetal (in the circuit protector (8) ( The electric cooker according to claim 1, wherein the reversing operation of 8b) due to overcurrent is performed to restore the original state. 3. The cut button (5a) of the switch part (5)
When is pressed downward, the attachment lever (5d) of the cut button (5a) directly pushes the operation lever (9) of the circuit protector (8), and the bimetal (8b) inside the circuit protector (8) 2. The electric cooker according to claim 1, wherein the electric cooker is configured to return to the original state when the reversing operation is caused by the overcurrent. 4. The cut button (5a) of the switch part (5)
When pushing down, the operating plate (10) inside the switch part (5) moves laterally, and the connecting lever (11) interlocking with the operating plate (10) expands the operation of the operating plate (10). When the circuit protector (8) is pressed, the operating lever (9) of the circuit protector (8) is pressed, and the bimetal (8b) in the circuit protector (8) reverses due to overcurrent, and returns to the original state. The electric cooker according to claim 1, wherein