CN210227926U - Handheld mixer control circuit and handheld mixer - Google Patents

Abstract

The application provides a handheld mixer control circuit and handheld mixer. The control circuit of the handheld stirrer comprises a motor drive circuit, a power supply circuit, a first switch circuit, a second switch circuit and a display circuit. The motor driving circuit is electrically connected with the motor; the first switch circuit is electrically connected between the power supply circuit and the motor drive circuit; the second switch circuit is electrically connected between the first switch circuit and the motor driving circuit; the display circuit is electrically connected with the first switch circuit and the second switch circuit and displays the switch state of the first switch circuit and/or the second switch circuit.

Description

Handheld mixer control circuit and handheld mixer

Technical Field

The application relates to the field of small household appliances, in particular to a handheld stirrer control circuit and a handheld stirrer.

Background

With the increasing living standard of people, many different types of blenders appear on the market. Wherein, handheld mixer compares in desk-top mixer operation simple convenient relatively. However, the existing hand-held blender is only provided with one power switch and cannot display the current working state, so that the misoperation is easily caused in the process of using the hand-held blender by an operator, and the safety is low.

SUMMERY OF THE UTILITY MODEL

The application provides a relatively safe and can show operating condition's handheld mixer control circuit and include the handheld mixer of this circuit.

One aspect of the present application provides a hand-held blender control circuit for controlling a motor of a hand-held blender, comprising:

the motor driving circuit is electrically connected with the motor;

a power supply circuit;

a first switch circuit electrically connected between the power supply circuit and the motor drive circuit;

a second switching circuit electrically connected between the first switching circuit and the motor driving circuit; and

and the display circuit is electrically connected with the first switch circuit and the second switch circuit and displays the switch state of the first switch circuit and/or the second switch circuit.

Further, the display circuit includes a first display circuit; the first display circuit is electrically connected to the power supply circuit through the first switch circuit and displays the switch state of the first switch circuit.

Further, the first switch circuit includes a changeover switch electrically connected to the power supply circuit, the first display circuit, and the second switch circuit to switch the power supply circuit between the first display circuit and the second switch circuit.

Further, the display circuit includes a second display circuit, the switch includes a movable contact, a first stationary contact and a second stationary contact, the movable contact is electrically connected to the power supply circuit, the first stationary contact is electrically connected to the first display circuit, the second stationary contact is electrically connected to the second display circuit and the second switch circuit, the second display circuit is connected to the power supply circuit through the switch, and the first display circuit and the second display circuit display a switching state of the switch.

Furthermore, the display circuit comprises a second display circuit, and the second display circuit is connected to the output end of the second switch circuit and displays the on-off state of the second switch circuit.

Furthermore, the motor driving circuit further comprises a speed regulating circuit connected with the output end of the second switch circuit, and one end of the second display circuit is electrically connected between the second switch circuit and the speed regulating circuit.

Further, the second display circuit is electrically connected to the output end of the speed regulation circuit.

Further, the motor driving circuit further comprises a speed regulating circuit electrically connected to the output end of the second switching circuit and a rectifying circuit electrically connected to the output end of the speed regulating circuit, and the second display circuit is electrically connected to the output end of the rectifying circuit.

Further, the display circuit includes a light emitting diode and a rectifying diode connected in series with the light emitting diode.

Another aspect of the present application provides a hand-held blender, comprising:

the main machine comprises a motor and a handheld stirrer control circuit, and the handheld stirrer control circuit is electrically connected with the motor; and

and the stirring device is rotatably arranged on the main machine.

According to the handheld stirrer control circuit, the first switch circuit and the second switch circuit are arranged, the first switch circuit controls the on-off of the power circuit to the second switch circuit, and the second switch circuit controls the on-off of the first switch circuit to the motor driving circuit, so that the double-switch mechanism of the handheld stirrer is realized, and the handheld stirrer control circuit is relatively safe and reliable; meanwhile, a display circuit is further arranged and can display the on-off state of the first switch circuit and/or the second switch circuit, so that an operator can acquire the current working state, misoperation is effectively avoided, and the use safety is further improved.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and together with the description, serve to explain the principles of the application.

FIG. 1 is a block schematic diagram of a hand-held blender control circuit according to an exemplary embodiment of the present application;

FIG. 2 is a schematic circuit diagram of the hand-held blender control circuit shown in FIG. 1;

FIG. 3 is a block schematic diagram of a hand-held blender control circuit according to another exemplary embodiment of the present application;

FIG. 4 is a schematic circuit diagram of the hand-held blender control circuit shown in FIG. 3;

FIG. 5 is a block schematic diagram of a hand-held blender control circuit in accordance with yet another exemplary embodiment of the present application;

FIG. 6 is a schematic circuit diagram of the hand-held blender control circuit shown in FIG. 5;

FIG. 7 is a block schematic diagram of a hand-held blender control circuit according to yet another exemplary embodiment of the present application;

FIG. 8 is a schematic circuit diagram of the hand-held blender control circuit shown in FIG. 7;

FIG. 9 is a schematic diagram of a hand blender according to an exemplary embodiment of the present application;

FIG. 10 is an angled configuration of the main unit of the hand blender shown in FIG. 9;

FIG. 11 is a schematic view of another angular configuration of the main unit of the hand blender shown in FIG. 9.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present application, as detailed in the appended claims.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The use of "first," "second," and similar terms in the description and in the claims does not indicate any order, quantity, or importance, but rather is used to distinguish one element from another. Also, the use of the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one. The word "plurality" or "a number" and the like mean two or more. Unless otherwise indicated, "front", "rear", "lower" and/or "upper" and the like are for convenience of description and are not limited to one position or one spatial orientation. The word "comprising" or "comprises", and the like, means that the element or item listed as preceding "comprising" or "includes" covers the element or item listed as following "comprising" or "includes" and its equivalents, and does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in this application and the appended claims, the singular forms "a", "an", and "the" may include singular forms or plural forms unless the context clearly dictates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

The handheld mixer control circuit of this application embodiment for the motor of control handheld mixer, including motor drive circuit, power supply circuit, first switch circuit, second switch circuit and display circuit. The motor driving circuit is electrically connected with the motor; the first switch circuit is electrically connected between the power supply circuit and the motor drive circuit; the second switch circuit is electrically connected between the first switch circuit and the motor driving circuit; the display circuit is electrically connected with the first switch circuit and the second switch circuit and displays the switch state of the first switch circuit and/or the second switch circuit.

According to the handheld stirrer control circuit, the first switch circuit and the second switch circuit are arranged, the first switch circuit controls the on-off of the power circuit to the second switch circuit, and the second switch circuit controls the on-off of the first switch circuit to the motor driving circuit, so that the double-switch mechanism of the handheld stirrer is realized, and the handheld stirrer control circuit is relatively safe and reliable; meanwhile, a display circuit is further arranged and can display the on-off state of the first switch circuit and/or the second switch circuit, so that an operator can acquire the current working state, misoperation is effectively avoided, and the use safety is further improved.

FIG. 1 is a block schematic diagram of a hand-held blender control circuit according to an exemplary embodiment of the present application. As shown in FIG. 1, the hand blender includes a hand blender control circuit 100 for controlling a motor 110 of the hand blender. The hand blender control circuit 100 includes a motor drive circuit 190, a power circuit 120, a first switch circuit 130, a second switch circuit 140, and a display circuit 150. The motor driving circuit 190 is electrically connected to the motor 110 for driving the motor 110. Power circuit 120 may be connected to an AC power source, receive AC power, and output AC power to hand-held blender control circuit 100. In one embodiment, the power circuit 120 may be connected to the neutral and hot wires, receiving mains power. The power supply circuit 120 may enable power supply compliance with safety regulations.

The first switch circuit 130 is electrically connected between the power supply circuit 120 and the motor drive circuit 190. The second switching circuit 140 is electrically connected between the first switching circuit 130 and the motor driving circuit 190. The first switch circuit 130 is electrically connected between the second switch circuit 140 and the power circuit 120, and can control the on/off of the power circuit 120 to the second switch circuit 140. The second switching circuit 140 may control the switching of the first switching circuit 130 to the motor driving circuit 190. The first switch circuit 130 and the second switch circuit 140 are arranged to realize a dual-switch mechanism of the hand-held mixer, so that the hand-held mixer is relatively safe and reliable to use.

The display circuit 150 is electrically connected to the first switch circuit 130 and the second switch circuit 140, and can display the switching state of the first switch circuit 130 and/or the second switch circuit 140. In the illustrated embodiment, the display circuit 150 is electrically connected to the output terminal of the first switch circuit 130 and the input terminal of the second switch circuit 140, and can display the switch state of the first switch circuit 130. The display circuit 150 can display the on-off state of the first switch circuit 130 and/or the second switch circuit 140, so that an operator can acquire the current working state of the handheld mixer through the on-off state of the first switch circuit 130 and/or the second switch circuit 140, misoperation is effectively avoided, and the use safety is further improved.

In some embodiments, the motor drive circuit 190 may include the speed regulation circuit 160. The speed control circuit 160 is connected to an output terminal of the second switching circuit 140. The speed regulating circuit 160 can control the speed of the motor 110, so that the handheld mixer can realize a multi-speed working state and realize more cooking functions.

In some embodiments, the motor drive circuit 190 may include a rectifier circuit 170. The rectifying circuit 170 is electrically connected to the output terminal of the speed control circuit 160 and to the motor 110. The rectifying circuit 170 is used to convert the ac power into the required dc power for the motor 110, and the motor 110 may be a dc motor.

In some embodiments, the hand-held blender control circuit 100 may further include a motor protection circuit 180, and the motor protection circuit 180 may protect the motor 110 when the motor 110 is operating abnormally, such as when it is overheating. The motor protection circuit 180 may include a thermistor, but is not limited thereto.

FIG. 2 is a circuit schematic of the hand blender control circuit 100 shown in FIG. 1. As shown in fig. 2, the display circuit 150 may include a first display circuit 151. The first display circuit 151 is electrically connected to the power supply circuit 120 through the first switch circuit 130, and displays the on/off state of the first switch circuit 130.

In the illustrated embodiment, the first switch circuit 130 may include a switch S1, and the switch S1 is electrically connected to the power supply circuit 120, the first display circuit 151, and the second switch circuit 140 so that the power supply circuit 120 can switch between the first display circuit 151 and the second switch circuit 140. The second switch circuit 140 may include a key switch BP1 for switching the current from the first switch circuit 130 to the motor drive circuit 190.

The hand mixer may include three different operating states: when the first display circuit 151 is connected to the power circuit 120 through the switch S1, the state is the first working state, and is the power-on locking state, at this time, the first display circuit 151 lights up to indicate that the hand-held mixer is connected to the power source, but the main switch is not turned on and cannot work. The switch S1 can be used as a master switch, and the switch S1 is switched to the first display circuit 151 to turn off the master switch. When the power circuit 120 is switched from the first display circuit 151 to the second switch circuit 140 through the switch S1, if the second switch circuit 140 is not connected, the second operating state is the power-on/unlock state, which indicates that the main switch is turned on. If the second switch circuit 140 is connected, the hand mixer starts to work, and the state is the third working state. In the second operating state and the third operating state, the first display circuit 151 is disconnected from the power supply circuit 120, and the first display circuit 151 displays no image.

In some embodiments, the first display circuit 151 may include a light emitting diode LED1, and the first display circuit 151 may prompt the operator of the current switch state through a light signal of the light emitting diode LED 1. In the illustrated embodiment, the light emitting diode LED1 may also be connected in series with current limiting resistors R1 and R2 to prevent the series-connected components from being burned out due to excessive current. In some embodiments, the first display circuit 151 may further include a rectifying diode D1, the rectifying diode D1 being connected in series with the light emitting diode LED 1.

In some embodiments, as shown in fig. 2, the display circuit 150 may further include a second display circuit 152. The second display circuit 152 is electrically connected to the changeover switch S1. The second display circuit 152 is connected to the power supply circuit 120 through the changeover switch S1. When the second display circuit 152 is connected to the power circuit 120, the first display circuit 151 displays no display, and the second display circuit 152 displays that the current operation state is the second operation state or the third operation state. The second display circuit 152 is illuminated to indicate that the master switch is open and operation can begin. The state of the first switch circuit 130 is displayed through the first display circuit 151 and the second display circuit 152, so that the state of the first switch circuit 130 can be directly reflected, and the display device is more intuitive and better in user experience.

In the illustrated embodiment, the switch S1 may include a movable contact 3, a first stationary contact 1, and a second stationary contact 2. The movable contact 3 of the switch S1 is electrically connected to the power supply circuit 120, the first stationary contact 1 is electrically connected to the first display circuit 151, and the second stationary contact 2 is electrically connected to the second switch circuit 140 and the second display circuit 152. The first display circuit 151 and the second display circuit 152 may display different switching states of the switch S1, respectively, thereby indicating the current operation state.

In some embodiments, the second display circuit 152 may include a light emitting diode LED2, and the second display circuit 151 may prompt the operator of the current switch status through a light signal of the light emitting diode LED 2. In the illustrated embodiment, the second display circuit 152 may further include a rectifying diode D2, the rectifying diode D2 being connected in series with the light emitting diode LED 2. In some embodiments, the second display circuit 152 is connected in parallel with the first display circuit 151 and then connected in series with the current limiting resistors R1 and R2 to prevent the current from being too large and burning out the series-connected components. In other embodiments, the second display circuit 152 may also be separately connected in series with a current limiting resistor, which is not described herein again.

FIG. 3 is a block schematic diagram of another exemplary embodiment of a hand-held blender control circuit 200; FIG. 4 is a circuit schematic of the hand blender control circuit 200 shown in FIG. 3. Referring to fig. 3 and 4, the display circuit includes a first display circuit 251 and a second display circuit 252. The first display circuit 251 is electrically connected to the first stationary contact 1 of the changeover switch S1, and the second switch circuit 140 is electrically connected to the second stationary contact 2 of the changeover switch S1. The second display circuit 252 is electrically connected to an output terminal of the second switch circuit 140. In the illustrated embodiment, one end of the second display circuit 252 is electrically connected between the second switch circuit 140 and the speed control circuit 160. The second display circuit 252 is connected to the power supply circuit 120 through the second switch circuit 140 and the first switch circuit 130.

When the switch S1 is switched to the first stationary contact 1, the first display circuit 251 is communicated with the power supply circuit 120, and the first display circuit 251 displays that the current state is the first working state; when the switch S1 is switched to the second stationary contact 2 and the second switch circuit 140 is not connected, the first display circuit 251 is turned off and the second display circuit 252 is turned off and the display is not displayed, which is the second working state; when the switch S1 is switched to the second stationary contact 2 and the second switch circuit 140 is triggered to be connected, the second display circuit 252 is connected to the power circuit 120, the hand mixer starts to work, and the second display circuit 252 displays that the current state is the third working state. So set up for the operator can be through the three kinds of different states that are shown by first display circuit 251 and second display circuit 252, can be relatively clear and definite learn the current operating condition of handheld mixer, effectively avoid operator's maloperation, promoted the security.

In the illustrated embodiment, the first display circuit 251 may include a light emitting diode LED1, and one end of the light emitting diode LED1 is electrically connected to the first switch circuit 130, and the other end is electrically connected to the power circuit 120. The first display circuit 251 may indicate the current operating status to the operator by means of an optical signal from the LED 1. In some embodiments, the light emitting diode LED1 may also be connected in series with current limiting resistors R1, R2 to prevent the series connected components from being burned out by excessive current. In some embodiments, the first display circuit 251 may further include a rectifying diode D1, the rectifying diode D1 being connected in series with the light emitting diode LED 1.

The second display circuit 252 may include a light emitting diode LED2, and one end of the light emitting diode LED2 is electrically connected to the second switch circuit 140, and the other end is electrically connected to the power supply circuit 120. The second display circuit 252 may indicate to the operator the current operating status via the light signal from the LED 2. In some embodiments, the light emitting diode LED2 may also be connected in series with current limiting resistors R3, R4 to prevent the series connected components from being burned out by excessive current. In some embodiments, the second display circuit 252 may further include a rectifying diode D2, the rectifying diode D2 being connected in series with the light emitting diode LED 2.

In other embodiments, the second display circuit 252 may be connected in series between the second switch circuit 140 and the speed regulation circuit 160.

FIG. 5 is a block schematic diagram of another exemplary embodiment of a hand-held blender control circuit 300; FIG. 6 is a circuit schematic of the hand-held blender control circuit 300 shown in FIG. 5. Referring to fig. 5 and 6, the display circuit includes a first display circuit 351 and a second display circuit 352. The first display circuit 351 is similar to the circuit of the first display circuit 251 in the embodiment shown in fig. 4, and the second display circuit 352 is similar to the circuit of the second display circuit 252 in the embodiment shown in fig. 4. The first display circuit 351 is electrically connected to the first stationary contact 1 of the changeover switch S1, and the second switch circuit 140 is electrically connected to the second stationary contact 2 of the changeover switch S1. In contrast to the embodiment shown in fig. 4, in the embodiments shown in fig. 5 and 6, the second display circuit 352 is electrically connected to the output of the throttle circuit 160. In the illustrated embodiment, the second display circuit 352 is electrically connected between the speed control circuit 160 and the rectifying circuit 170.

When the first switch circuit 130 and the second switch circuit 140 switch different on-off states, the first display circuit 351 and the second display circuit 352 of the hand-held mixer control circuit 300 can display three different operation states, similar to the hand-held mixer control circuit 200 shown in fig. 3 and 4, and give corresponding instructions to the operator. In contrast, as shown in the handheld mixer control circuit 300 of fig. 5 and 6, since the second display circuit 352 is electrically connected to the output terminal of the speed regulating circuit 160, the current of the second display circuit 352 can be changed according to the adjustment of the rotation speed. In some embodiments, the second display circuit 352 may include a dimmable LED, and the change in current may result in a change in brightness, so that the magnitude of the rotation speed may be indirectly displayed by the intensity of the brightness, and thus, more operation status signals may be provided to the operator.

FIG. 7 is a block schematic diagram of a hand-held blender control circuit 400 in accordance with another exemplary embodiment; FIG. 8 is a circuit schematic of the hand blender control circuit 400 shown in FIG. 5.

Referring to fig. 7 and 8, the display circuit includes a first display circuit 451 and a second display circuit 452. The first display circuit 451 is similar to the circuits of the first display circuits 251, 351 in the embodiments shown in fig. 4 and 6. The first display circuit 451 is electrically connected to the first stationary contact 1 of the changeover switch S1, and the second switch circuit 140 is electrically connected to the second stationary contact 2 of the changeover switch S1. The second switch circuit 140 is electrically connected to the speed control circuit 160, and the speed control circuit 160 is electrically connected to the rectifier circuit 170.

In the embodiment shown in fig. 7 and 8, the second display circuit 452 is electrically connected to the output terminal of the rectifying circuit 170. In the illustrated embodiment, the second display circuit 452 is electrically connected between the rectifying circuit 160 and the motor protection circuit 180. Similar to the hand-held blender control circuit 300 of fig. 5 and 6, the second display circuit 452 may display different based on different rotational speeds. The second display circuit 452 is similar to the second display circuit 352 shown in fig. 6, and compared to the second display circuit 352 shown in fig. 6, in the embodiment shown in fig. 7 and 8, since the second display circuit 452 is electrically connected to the output terminal of the rectifying circuit 170, the rectifying diode D2 in the second display circuit 352 in fig. 6 may be omitted, thereby reducing the product cost. The light emitting diode LED2 of the second display circuit 452 is connected to the rectifier circuit 170 through the current limiting resistors R3, R4.

FIG. 9 is a schematic diagram of a hand blender according to an exemplary embodiment of the present application; fig. 10 and 11 are schematic views of the hand mixer 1000 shown in fig. 9 with different angles. The hand blender may include a main body 1000 and a blending device 2000 mounted on the main body 1000.

Referring to fig. 1, 2 and 9, the host 1000 includes a motor 120 and a hand blender control circuit 100. A hand blender control circuit 100 is shown in fig. 1 and 2. The host 1000 may be grasped by an operator. The stirring device 2000 is rotatably installed on the main body 1000, and is used for stirring food materials, such as a stirring blade, an egg beater, etc. The hand mixer further includes a cable 3000 extending from the main unit 1000, connected to the hand mixer control circuit 100, and plugged into the utility power. In other embodiments, the hand-held blender may further include a battery assembly to provide direct current to the blender control circuit 100.

The hand blender control circuit 100 and motor 120 are located within the housing of the host 1000 and are not shown in fig. 9. Wherein, the hand-held mixer control circuit 100 is electrically connected with the motor 120. The hand mixer controls the motor via the hand mixer control circuit 100 so that the operator can control the motor 120 with relative safety and reliability.

Referring to fig. 1, 2 and 10, the main body 1000 of the hand blender includes a first switch module 1130 and a second switch module 1140. The first switch module 1130 is electrically connected to the first switch circuit 130, and the first switch module 1130 may trigger the first switch circuit 130 to switch. The second switch module 1140 is electrically connected to the second switch circuit 140, and the second switch module 1140 can control the second switch circuit 140 to be turned on or off. An operator can switch and control different working states of the hand-held blender through the first switch module 1130 and the second switch module 1140. In the illustrated embodiment, the first switch module 1130 and the second switch module 1140 are disposed on two opposite surfaces of the host 1000, which is convenient for an operator to grasp and use.

Referring to fig. 1, 2 and 11, the top surface of the host 1000 of the hand blender is provided with a first display icon 1151 and a second display icon 1152. The first display icon 1151 corresponds to the first display circuit 151, and the second display icon 1152 corresponds to the second display circuit 152. The first display icon 1151 and the second display icon 1152 may indicate different operating states. In the illustrated embodiment, the first displayed icon 1151 can be configured in a locked configuration and the second displayed icon 1152 can be configured in an unlocked configuration. When the LED1 of the first display circuit 151 is lit, the first display icon 1151 is lit, and the operator can determine that the hand mixer is in the locked state, i.e., powered but not activated. When the first display circuit 151 is turned off and the second display circuit 152 is turned on, the light emitting diode LED1 of the first display circuit 151 is turned off, the light emitting diode LED2 of the second display circuit 152 is turned on, the first display icon 1151 is turned off, and the second display icon 1152 is turned on, thereby prompting the operator to start the operation. In some embodiments, the first display icon 1151 and the second display icon 1152 may also be arranged in other patterns, which are not described herein.

Other embodiments of the present application will be apparent to those skilled in the art from consideration of the specification and practice of the application disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the application and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the application being indicated by the following claims.

It will be understood that the present application is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the application is limited only by the appended claims.

Claims (10)

1. A hand blender control circuit for controlling a motor (110) of a hand blender, comprising:

a motor drive circuit (190) electrically connected to the motor (110);

a power supply circuit (120);

a first switching circuit (130) electrically connected between the power supply circuit (120) and the motor drive circuit (190);

a second switching circuit (140) electrically connected between the first switching circuit (130) and the motor driving circuit (190); and

and a display circuit (150) electrically connected to the first switch circuit (130) and the second switch circuit (140) and displaying a switching state of the first switch circuit (130) and/or the second switch circuit (140).

2. A hand-held mixer control circuit as claimed in claim 1, characterised in that the display circuit (150) comprises a first display circuit (151); the first display circuit (151) is electrically connected to the power supply circuit (120) through the first switch circuit (130), and displays a switching state of the first switch circuit (130).

3. A hand-held mixer control circuit as claimed in claim 2, wherein the first switch circuit (130) comprises a switch (S1), the switch (S1) being electrically connected to the power circuit (120), the first display circuit (151) and the second switch circuit (140) to switch the power circuit (120) between the first display circuit (151) and the second switch circuit (140).

4. A hand-held mixer control circuit as claimed in claim 3, characterised in that the display circuit (150) comprises a second display circuit (152), the switch (S1) comprises a movable contact electrically connected to the power supply circuit (120), a first stationary contact electrically connected to the first display circuit (151), and a second stationary contact electrically connected to the second display circuit (152) and the second switch circuit (140), the second display circuit (152) is connected to the power supply circuit (120) via the switch (S1), and the first display circuit (151) and the second display circuit (152) display the switching status of the switch (S1).

5. A hand-held mixer control circuit according to claim 2 in which the display circuit comprises a second display circuit connected to the output of the second switch circuit (140) for displaying the on/off status of the second switch circuit (140).

6. The hand-held mixer control circuit according to claim 5, wherein the motor driving circuit (190) comprises a speed regulating circuit (160) connected to an output terminal of the second switching circuit (140), and one end of the second display circuit is electrically connected between the second switching circuit (140) and the speed regulating circuit (160).

7. The hand-held mixer control circuit of claim 6 in which the second display circuit is electrically connected to an output of the speed regulation circuit (160).

8. The hand-held mixer control circuit according to claim 5, wherein the motor driving circuit (190) comprises a speed regulating circuit (160) electrically connected to an output terminal of the second switching circuit (140) and a rectifying circuit (170) electrically connected to an output terminal of the speed regulating circuit (160), and the second display circuit is electrically connected to an output terminal of the rectifying circuit (170).

9. A hand-held blender control circuit as claimed in claim 1, characterised in that the display circuit (150) comprises a light emitting diode and a rectifying diode in series with the light emitting diode.

10. A hand-held blender, comprising:

a host (1000) comprising a motor (110) and the hand-held blender control circuit (100) of any of claims 1-9, the hand-held blender control circuit (100) electrically coupled to the motor (110); and

and a stirring device (2000) rotatably mounted to the main body (1000).

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