CN219918746U - Anti-misoperation electric shock motor control circuit, anti-misoperation electric shock motor assembly and handheld stirrer - Google Patents

Abstract

The utility model discloses an anti-misoperation electric shock machine control circuit, an anti-misoperation electric shock machine component and a handheld stirrer, wherein the anti-misoperation electric shock machine control circuit comprises a start-stop trigger circuit, a motor driving circuit and a main control circuit, wherein the start-stop trigger circuit is used for outputting a first start-stop trigger signal after being triggered by a first preset trigger mode and outputting a second start-stop trigger signal after being triggered by a second preset trigger mode; the motor driving circuit is respectively connected with the motor and the start-stop trigger circuit; the main control circuit is respectively connected with the output end of the start-stop trigger circuit and the motor driving circuit, and is used for unlocking to enter a working state when receiving a first start-stop trigger signal; and the motor driving circuit is used for outputting an operation control signal to the motor driving circuit when the motor driving circuit receives the second start-stop trigger signal in the working state; the motor driving circuit is used for driving the motor to rotate when receiving the second start-stop trigger signal and the operation control signal. The technical scheme of the utility model can reduce the probability of false touch starting.

Description

Anti-misoperation electric shock motor control circuit, anti-misoperation electric shock motor assembly and handheld stirrer

Technical Field

The utility model relates to the technical field of stirrers, in particular to an anti-misoperation motor control circuit, an anti-misoperation motor assembly and a handheld stirrer.

Background

At present, the household appliances which drive the blades, the stirring rods and the like by taking the motor as a power source can be designed to be handheld for being convenient for users to carry and use, for example, the handheld stirrer is easy to be triggered by users in daily use by mistake, and the stirring cutting piece which rotates after the false triggering is extremely easy to cause injury to the users, so that the use safety of the handheld stirrer is lower.

Disclosure of Invention

The utility model mainly aims to provide an anti-misoperation motor control circuit, an anti-misoperation motor assembly and a handheld stirrer, and aims to solve the problem that the handheld stirrer is easy to be mistakenly triggered when being applied to the handheld stirrer.

In order to achieve the above object, the present utility model provides a hand-held mixer for controlling a motor to work, the anti-electric shock motor control circuit includes:

the start-stop trigger circuit is used for outputting a first start-stop trigger signal after being triggered by a first preset trigger mode and outputting a second start-stop trigger signal after being triggered by a second preset trigger mode;

The motor driving circuit is respectively connected with the motor and the start-stop trigger circuit; the method comprises the steps of,

the main control circuit is respectively connected with the output end of the start-stop trigger circuit and the motor driving circuit, and is used for unlocking to enter a working state when receiving a first start-stop trigger signal; and the motor driving circuit is used for outputting an operation control signal to the motor driving circuit when the motor driving circuit receives the second start-stop trigger signal in a working state;

and the motor driving circuit is used for driving the motor to rotate when receiving the second start-stop trigger signal and the operation control signal.

Optionally, the number of the start-stop trigger circuits is multiple, and the motor driving circuit comprises motor driving branches with the number corresponding to that of the start-stop trigger circuits;

the first controlled end of each motor driving branch is connected with the output end of one start-stop trigger circuit so as to be correspondingly connected with a second start-stop trigger signal output by the start-stop trigger circuit;

the second controlled end of each motor driving branch is connected with one control end of the main control circuit so as to be correspondingly connected with an operation control signal output by the control end;

Each motor driving branch is used for driving the motor to rotate when receiving the second start-stop trigger signal and the operation control signal.

Optionally, the motor driving branch circuit includes a first diode, a first capacitor, a first switching device, a second switching device, a first resistor and a second resistor;

the input end and the controlled end of the first switching device are a first controlled end and a second controlled end of a motor driving branch where the first switching device is located respectively, the output end of the first switching device is connected to the controlled end of the second switching device through the first resistor, the controlled end of the second switching device is grounded through the second resistor, the output end of the second switching device is grounded, the input end of the second switching device is connected to a power supply voltage through the first diode, the first capacitor is connected with the first diode in parallel, and the two ends of the first capacitor are connected with the input end of the motor.

Optionally, a second switching device in each motor driving branch is connected in series, and output ends of the start-stop trigger circuits are connected with each other.

Optionally, the anti-electric shock motor control circuit further includes:

the rotating speed regulating circuit is arranged on a power supply path between the power supply voltage and the ground of the output end of the second switching device, and the controlled end of the rotating speed regulating circuit is connected with the main control circuit;

The rotating speed adjusting circuit is used for adjusting the rotating speed of the motor under the control of the main control circuit.

Optionally, the anti-electric shock motor control circuit further includes:

the detection end of the current detection circuit is connected with the power supply channel, and the output end of the current detection circuit is connected with the main control circuit;

the current detection circuit is used for detecting the current on the power supply path and outputting a current detection signal to the main control circuit, so that the main control circuit controls the rotating speed regulating circuit to regulate the rotating speed of the motor according to the received current detection signal.

Optionally, the first preset triggering mode is at least one key triggering;

and/or, the second preset triggering mode is long-press triggering.

The utility model also provides an anti-false touch motor assembly, which comprises:

a motor; the method comprises the steps of,

the anti-misoperation electric shock motor control circuit is connected with the motor.

The utility model also proposes a hand-held mixer comprising:

a housing;

the motor is arranged in the shell;

the key is arranged on the shell;

The stirring piece is arranged on the shell and is in driving connection with the motor; the method comprises the steps of,

according to the anti-misoperation electric shock machine control circuit, the anti-misoperation electric shock machine control circuit is connected with the motor, and the motor is used for controlling the stirring piece according to the trigger signal of the key.

Optionally, a circuit board is arranged in the shell, and the circuit board is provided with the anti-misoperation electric shock motor control circuit and the potentiometer; the shell is provided with a speed regulation trigger component in transmission connection with the potentiometer, and the speed regulation trigger component is used for regulating the resistance value of the potentiometer after being triggered, so that the anti-misoperation electric shock motor control circuit correspondingly regulates the rotating speed of the motor according to the resistance value regulated by the potentiometer.

Optionally, a movable groove is arranged on the shell, the speed regulation trigger assembly comprises a trigger seat and a trigger piece, and the trigger piece is rotatably arranged in the shell and is in transmission connection with the potentiometer; the trigger piece is arranged on the trigger seat, one end of the trigger piece penetrates out of the shell from the movable groove, and the trigger piece is arranged in the movable groove in a reciprocating manner.

According to the technical scheme, the start-stop trigger circuit, the motor driving circuit and the main control circuit are adopted, the main control circuit enters a working state when receiving a first start-stop trigger signal which is output after the start-stop trigger circuit is triggered in a first preset trigger mode, and the main control circuit continuously receives a second start-stop trigger signal which is output after the start-stop trigger circuit is triggered in a second preset trigger mode in the working state, and then the operation control signal is output to the motor driving circuit, so that the motor driving circuit can control the motor to rotate under the action of the second start-stop trigger signal and the operation control signal. The control circuit of the anti-misoperation electric shock machine can enable a user not to achieve a first preset trigger mode when the misoperation mode of the start-stop trigger circuit is not achieved or can not drive the motor to work when the start-stop trigger circuit is independently triggered by the first preset trigger mode, and compared with the control circuit which only adopts continuous key trigger or single key trigger to drive the motor, the control circuit of the anti-misoperation electric shock machine greatly reduces the misoperation probability, thereby solving the problem that a handheld stirrer is easy to be triggered by mistake.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of a control circuit of an anti-electric shock motor according to an embodiment of the present utility model;

FIG. 2 is a schematic circuit diagram of an embodiment of an anti-electric shock motor control circuit according to the present utility model;

FIG. 3 is a schematic exploded view of one embodiment of a hand-held mixer of the present utility model;

FIG. 4 is a schematic diagram of the structure of FIG. 3 after being disassembled;

FIG. 5 is a schematic cross-sectional view of a hand-held mixer of the present utility model;

FIG. 6 is an enlarged view at A in FIG. 5;

FIG. 7 is a schematic diagram of an embodiment of the trigger seat of FIG. 4;

FIG. 8 is a schematic view of an embodiment of the governor shaft of FIG. 4;

FIG. 9 is a schematic diagram of an embodiment of the upper housing of FIG. 4;

fig. 10 is a schematic structural view of the damping member of fig. 4.

Reference numerals illustrate:

the achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present utility model are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.

In the present utility model, unless specifically stated and limited otherwise, the terms "connected," "affixed," and the like are to be construed broadly, and for example, "affixed" may be a fixed connection, a removable connection, or an integral body; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

Furthermore, descriptions such as those referred to as "first," "second," and the like, are provided for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implying an order of magnitude of the indicated technical features in the present disclosure. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.

The utility model provides an anti-misoperation electric shock motor control circuit which can be applied to handheld motor equipment, such as a handheld stirrer. At present, a starting key is usually arranged on the handheld stirrer, and a user can trigger a motor in the device to rotate by continuously triggering the starting key or triggering the starting key by a single key. However, for handheld devices, the motor often drives the stirring and cutting member such as a blade and a stirring rod to rotate at a high speed, and once a user touches the stirring and cutting member by mistake, the stirring and cutting member rotating at a high speed is very easy to cause injury to the user.

To solve this problem, referring to fig. 1 to 2, the electric shock prevention machine control circuit includes:

the start-stop trigger circuit 110 is configured to output a first start-stop trigger signal after being triggered by a first preset trigger mode, and to output a second start-stop trigger signal after being triggered by a second preset trigger mode;

the motor driving circuit 120 is respectively connected with the motor 200 and the start-stop trigger circuit 110; the method comprises the steps of,

the main control circuit 130, the main control circuit 130 is respectively connected with the output end of the start-stop trigger circuit 110 and the motor drive circuit 120, and the main control circuit 130 is used for unlocking to enter a working state when receiving a first start-stop trigger signal; and is configured to output an operation control signal S1 to the motor driving circuit 120 when receiving the second start-stop trigger signal in the operating state;

the motor driving circuit 120 is configured to drive the motor 200 to rotate when receiving the second start-stop trigger signal and the operation control signal S1.

In this embodiment, the start-stop trigger circuit 110 may have a trigger 420, and the trigger 420 may be implemented by one or more of a function key, a key 111, a roller, a lever, etc., which is not limited herein. The start-stop trigger circuit 110 may output a start-stop trigger signal corresponding to a trigger mode when the trigger 420 is triggered by a user. In the embodiment shown in fig. 2, the trigger piece 420 is a key 111, a first end of the key 111 is used for accessing a preset voltage of 5V, a second end of the key 111 may be an output end of the start-stop trigger circuit 110, and the key 111 may output the preset voltage as a high-level start-stop trigger signal through a diode after being triggered by a user in a key manner; and stopping outputting the preset voltage when the trigger signal is not triggered by a user, namely stopping outputting the start-stop trigger signal.

The motor drive circuit 120 may be implemented using switching devices and discrete device constructions; the switching device can be realized by adopting one or more combinations of switching tubes such as a triode, a MOS tube or an IGBT, and the discrete devices can be resistors, capacitors, inductors and the like.

The motor driving circuit 120 may be connected to a battery in the hand-held mixer to access the battery voltage bat+, and the motor driving circuit 120 may have a first controlled terminal and a second controlled terminal, and may control the respective switching devices to be turned on or off according to signals received by the first and second controlled terminals, so that each switching device turned on or off may output or stop outputting the battery voltage bat+ to the motor 200, thereby implementing the rotation or stop of the driving motor 200.

The main control circuit 130 may include a main controller (not shown) and its peripheral circuits. The main controller may be a microprocessor such as an MCU, a DSP, or an FPGA, or may also be implemented by a dedicated main control chip, and the peripheral circuit may include a voltage detection circuit 131; the voltage detection circuit 131 may be connected to an output terminal of the start-stop trigger circuit 110 to detect a voltage of the start-stop trigger signal output by the start-stop trigger circuit 110, and may output a corresponding voltage detection signal S2 to the main controller, so that the main controller may perform analysis processing on the voltage detection signal S2 after converting the voltage detection signal S2 into a digital signal to determine a voltage value and an output duration of the start-stop trigger signal output by the start-stop trigger circuit 110. The voltage detection circuit 131 may include two resistors arranged in series, wherein a common end of the two resistors may be a detection end of the voltage detection circuit 131, one end of the resistor far away from the common end may be grounded, and the other end of the resistor far away from the common end may be an output end of the voltage detection circuit 131.

It can be appreciated that the voltage magnitude and the output duration of the start-stop trigger signal may be related to the triggering mode of the start-stop trigger circuit 110, so that the main controller may further determine the triggering mode of the start-stop trigger circuit 110 by comparing the voltage value and/or the output duration of the received start-stop trigger signal with a preset voltage threshold and/or a preset output duration. For example, the main controller may determine that the triggering mode is single key triggering when it is determined that the voltage value of the start-stop trigger signal is not less than a preset voltage threshold and the output duration is less than a preset output duration; when the voltage value of the start-stop trigger signal is not smaller than a preset voltage threshold value and the output duration is not smaller than a preset output duration, the trigger mode is determined to be long-press trigger. It can be understood that the main controller may further determine that the triggering mode is multiple key triggers when the interval time between two adjacent single key triggers is not greater than the first preset interval time.

The main controller in the main control circuit 130 may determine that the triggering mode of the start-stop triggering circuit 110 meets the first preset triggering mode when receiving the first start-stop triggering signal, and trigger the main controller to unlock, so that the main controller enters the working state. If the main controller in the working state receives the second start-stop trigger signal again, it is determined that the trigger mode of the start-stop trigger circuit 110 at this time meets the second preset trigger mode, and the operation control signal S1 can be generated and output to the motor driving circuit 120, so that the motor driving circuit 120 can output the connected battery voltage bat+ to the motor 200 (m+ and M-) under the driving of the start-stop trigger signal and the operation control signal S1, so as to drive the motor 200 to rotate. In the case that the first start-stop trigger signal is not received, or the second start-stop trigger signal is not received after the main controller is unlocked, the motor driving circuit 120 cannot simultaneously receive the second start-stop trigger signal and the operation control signal S1, and thus cannot drive the motor 200 to rotate. In other words, when the user sequentially triggers the start-stop trigger circuit 110 according to the first preset trigger mode and the second preset trigger mode, the motor driving circuit 120 can drive the motor 200 to rotate.

By the arrangement, when the false touch mode of the start-stop trigger circuit 110 does not reach the first preset trigger mode, or the start-stop trigger circuit 110 is triggered by the first preset trigger mode alone, the motor 200 cannot be driven to work, and compared with the case that the motor 200 is driven by continuous key triggering or single key triggering, the false touch probability is definitely greatly reduced, so that the problem that the hand-held mixer is triggered by errors easily is solved.

Referring to fig. 1 to 2, the number of start-stop trigger circuits 110 is multiple, and the motor driving circuit 120 includes motor 200 driving branches corresponding to the number of start-stop trigger circuits 110;

the first controlled end of each motor 200 driving branch is connected with the output end of one start-stop trigger circuit 110 to be correspondingly connected with the second start-stop trigger signal output by the start-stop trigger circuit 110;

the second controlled end of each motor 200 driving branch is connected with one control end of the main control circuit 130 to be correspondingly connected with an operation control signal S1 output by the control end;

each motor 200 driving branch is configured to drive the motor 200 to rotate when receiving the second start-stop trigger signal and the operation control signal S1.

In this embodiment, each start-stop trigger circuit 110 may be set corresponding to a preset rotation speed and one motor 200 driving branch, and any motor 200 driving branch may drive the motor 200 to rotate when receiving the second start-stop trigger signal and the operation control signal S1. In the embodiment shown in fig. 2, the number of the start-stop trigger circuits 110 is set to two, wherein the preset rotation speed corresponding to one start-stop trigger circuit 110 may be a low rotation speed, and the preset rotation speed corresponding to the other start-stop trigger circuit 110 may be a high rotation speed.

The master control circuit 130 may unlock the master control circuit 130 when determining that the trigger mode is the first preset trigger mode according to the second start-stop trigger signal output by any one of the start-stop trigger circuits 110, that is, when the trigger mode of any one of the start-stop trigger circuits 110 is the first preset trigger mode. When the main control circuit 130 is in the working state, the main control circuit 130 determines that the triggering mode of any one of the start-stop triggering circuits 110 is the second preset triggering mode, the operation control signal S1 can be output to the motor 200 driving branch corresponding to the start-stop triggering circuit 110 through the corresponding control terminal, so that the motor 200 drives the branch driving motor 200 to rotate. In other words, in this embodiment, the start-stop trigger circuit 110 triggered in the first preset manner and the start-stop trigger circuit 110 triggered in the second preset manner may be the same path or different paths, so that the flexibility of user triggering is improved.

The motor 200 driving branch circuit comprises a first diode D1, a first capacitor C1, a first switching device T1, a second switching device T2, a first resistor R1 and a second resistor R2;

optionally, the input end and the controlled end of the first switching device T1 are a first controlled end and a second controlled end of the driving branch of the motor 200, the output end of the first switching device T1 is connected to the controlled end of the second switching device T2 through a first resistor R1, the controlled end of the second switching device T2 is further grounded through a second resistor R2, the output end of the second switching device T2 is grounded, the input end of the second switching device T2 is connected to the power supply voltage through a first diode D1, the first capacitor C1 is connected in parallel with the first diode D1, and two ends of the first capacitor C1 are connected to the input end of the motor 200.

In the embodiment shown in fig. 2, the first switching device T1 is a PNP transistor, the second switching device T2 is an N-MOS transistor, the operation control signal S1 may be a low level signal, the supply voltage may be a battery voltage bat+, and bat+ in fig. 2 may also be regarded as a voltage input terminal to input the supply voltage. When the start-stop trigger circuit 110 is triggered in the second preset manner, the main control circuit 130 outputs the operation control signal S1 to the first switching device T1 to trigger the first switching device T1 to be turned on, the turned-on first switching device T1 may output the second start-stop trigger signal to the controlled end of the second switching device T2 to trigger the second switching device T2 to be turned on, and the turned-on second switching device T2 may output the battery voltage bat+ to the ground through the first capacitor C1 to form a power supply loop of the motor 200, so as to realize the rotation of the driving motor 200. The first diode D1 is an anti-reverse diode.

Optionally, the second switching devices T2 in the driving branches of each motor 200 are connected in series, and the output terminals of each start-stop trigger circuit 110 are connected to each other. Thus, after the main control circuit 130 is unlocked and enters the working state, when any one of the start-stop trigger circuits 110 is triggered in the second preset manner, since the output ends of the start-stop trigger circuits 110 are all connected, each motor 200 driving branch circuit can be connected with a second start-stop trigger signal, at this time, the main control circuit 130 can output the operation control signal S1 to the second controlled end of each motor 200 driving branch circuit, so that the second switching device T2 in each motor 200 driving branch circuit is turned on, and thus, each second switching device T2 connected in series can form a motor 200 power supply loop. Thus, redundant drive control for the motor 200 can be achieved.

Optionally, the anti-misoperation electric shock machine control circuit further comprises:

the rotating speed regulating circuit 140 is arranged on a power supply path between the power supply voltage and the ground of the output end of the second switching device T2, and the controlled end of the rotating speed regulating circuit 140 is connected with the main control circuit 130;

the rotation speed adjusting circuit 140 is used for adjusting the rotation speed of the motor 200 under the control of the main control circuit 130.

The rotation speed adjusting circuit 140 may be implemented by a switching circuit constituted by switching devices. In the working state, when determining that any one of the start-stop trigger circuits 110 is triggered in the second preset trigger mode, the main control circuit 130 may determine a preset rotation speed corresponding to the triggered start-stop trigger circuit 110 and a preset duty cycle stored in association with the preset rotation speed, and may generate a PWM signal with the preset duty cycle to output to the rotation speed adjusting circuit 140, so that the rotation speed adjusting circuit 140 may control the on-off frequency of the power supply path according to the received PWM signal, so as to implement rotation speed adjustment of the motor 200. The power supply path between the power supply voltage and the ground of the output terminal of the second switching device T2 can also be regarded as the power supply path between the voltage input terminal bat+ and the ground of the output terminal of the second switching device T2, and reference is made to the connection relationship shown in fig. 2.

In the embodiment shown in fig. 2, the rotation speed adjusting circuit 140 may include a third switching device T3 that is an N-MOS transistor. When the first start-stop trigger circuit 110 is triggered, the third switching device T3 may receive a PWM signal having a first preset duty cycle; when the first start-stop trigger circuit 110 is triggered, the third switching device T3 may receive the PWM signal having the second preset duty ratio, and the first preset duty ratio may be smaller than the second preset duty ratio, thereby implementing the high-speed gear and the low-speed gear of the hand-held mixer.

Optionally, the anti-misoperation electric shock machine control circuit further comprises:

the detection end of the current detection circuit 150 is connected with the power supply path, and the output end of the current detection circuit 150 is connected with the main control circuit 130;

the current detection circuit 150 is configured to detect a current on the power supply path, and output a current detection signal S3 to the main control circuit 130, so that the main control circuit 130 controls the rotation speed adjustment circuit 140 to adjust the rotation speed of the motor 200 according to the received current detection signal S3.

Since the rotation speed of the motor 200 is directly proportional to the current in the power supply path, when the motor 200 rotates, the main control circuit 130 can convert the current detection signal S3 output by the connected current detection circuit 150 into a digital signal, and then analyze the digital signal to determine the current in the power supply path and the real-time rotation speed corresponding to the current. The main control circuit 130 may also compare the real-time rotation speed with a preset rotation speed corresponding to the start-stop trigger circuit 110 that is currently working (i.e. outputs the second start-stop trigger signal), and may adjust the duty ratio of the output PWM signal according to the comparison result, so that the rotation speed adjusting circuit 140 may control the rotation speed of the motor 200 according to the PWM signal after adjusting the duty ratio until the real-time rotation speed matches with the preset rotation speed. The method comprises the following steps: when the comparison result is that the real-time rotating speed is larger than the preset rotating speed, correspondingly reducing the duty ratio of the output PWM signal to reduce the rotating speed of the motor 200; when the comparison result is that the real-time rotation speed is less than the preset rotation speed, the duty ratio of the output PWM signal is correspondingly increased to increase the rotation speed of the motor 200. By the arrangement, the feedback adjustment of the rotating speed of the motor 200 can be realized, and the rotating speed control precision of the motor 200 and the service life of the handheld stirrer are improved.

In the embodiment shown in fig. 2, a third resistor R3 is further disposed on the power supply path, and the third resistor R3 is disposed between the last second switching device T2 and ground. The current detection circuit 150 includes a fourth resistor R4, a fifth resistor R5, and a second capacitor C2, where a first end of the fourth resistor R4 may be connected to the power supply path as a detection end, a second end of the fourth resistor R4 may be connected to the main control circuit 130 through the fifth resistor R5, and a second end of the fourth resistor R4 is further grounded through the second capacitor C2; wherein, the second capacitor C2 is a filter capacitor to reduce the ac component in the output current detection signal S3.

Referring to fig. 1 to 2, the first preset triggering mode is at least one key triggering; and/or the second preset triggering mode is long-press triggering.

In this embodiment, at least one key trigger may be a single key trigger or a continuous multiple key trigger, where the continuous multiple key triggers may be two continuous key triggers, three key triggers or four key triggers, which is not limited herein. It should be noted that, after the main control circuit 130 is unlocked and enters the working state, if the second start-stop trigger signal is not received, the locking is restarted; if the start-stop trigger circuit 110 suddenly stops outputting the second start-stop trigger signal in the process of outputting the second start-stop trigger signal, and the main control circuit 130 receives the second start-stop trigger signal again in the third preset interval time after stopping being triggered, the operation control signal S1 is directly output to the motor 200 driving signal, so that the motor driving circuit 120 can continue to directly drive the motor 200 to continue rotating, and the user does not need to trigger the start-stop trigger circuit 110 again in the first preset trigger mode; if the master control circuit 130 does not receive the second start-stop trigger signal in the third preset interval time after the stop is triggered, the master control circuit 130 reenters the lock-out state.

The utility model also provides an anti-false electric shock motor assembly, which comprises a motor 200 and an anti-false electric shock motor control circuit, wherein the specific structure of the anti-false electric shock motor control circuit refers to the embodiment, and the anti-false electric shock motor assembly adopts all the technical schemes of all the embodiments, so that the anti-false electric shock motor assembly at least has all the beneficial effects brought by the technical schemes of the embodiments, and the detailed description is omitted.

Wherein, the anti-misoperation electric shock motor control circuit is connected with the motor 200; the motor 200 may be implemented using an inner rotor motor or an outer rotor motor, which is not limited herein. The method comprises the following steps: the motor 200 may include a stator and a rotor; for example, when the motor 200 employs an inner rotor motor, the rotor is provided in the stator; the motor 200 further includes a rotating shaft, which may be disposed through the rotor and connected to a target component (e.g., a stirring rod body) driven by the motor 200, so as to drive the target component to rotate by using the rotary motion of the rotor in the stator magnetic field.

The utility model also provides a handheld stirrer, which comprises a shell 500, a motor 200, a key 111, a stirring piece 711 and the anti-misoperation electric shock motor control circuit, wherein the motor 200 is arranged in the shell 500; the key 111 is arranged on the shell 500; a stirring member 711 is provided in the housing 500 and is drivingly connected to the motor 200; the anti-electric shock motor control circuit is connected with the motor 200, and the motor 200 is used for controlling the stirring piece 711 according to the trigger signal of the key 111; the specific structure of the anti-electric shock motor control circuit refers to the above embodiments, and because the handheld stirrer adopts all the technical schemes of all the embodiments, the handheld stirrer has at least all the beneficial effects brought by the technical schemes of the embodiments, and the details are not repeated here.

It will be appreciated that the motor 200 may be disposed in the housing 500, the key 111 may be disposed on the housing 500, or may be partially disposed in the housing 500, and the stirring member 711 may be detachably connected to the driving end of the motor 200 in the housing, so as to facilitate the disassembly and assembly of the stirring member 711.

Referring to fig. 3 and fig. 4, in an embodiment, a circuit board 300 is disposed in the housing 500, and the anti-electric shock motor control circuit and the potentiometer 310 are disposed on the circuit board 300; the shell 500 is provided with a speed regulation trigger assembly 400 in transmission connection with the potentiometer 310, and the speed regulation trigger assembly 400 is used for regulating the resistance value of the potentiometer 310 after being triggered, so that the anti-misoperation electric shock motor control circuit correspondingly regulates the rotating speed of the motor according to the resistance value regulated by the potentiometer 310.

It will be appreciated that the circuit board 300 may be implemented using a printed circuit board, and that the anti-electric shock motor control circuit and potentiometer 310 may be soldered to the circuit board 300 and may be electrically connected by wiring the circuit board 300. The speed regulation trigger assembly 400 can convert the trigger action of a user into the resistance adjustment action of the potentiometer 310 through a transmission connection so as to realize the resistance adjustment of the potentiometer 310; the main control circuit 130 may detect the real-time resistance value of the potentiometer 310, determine the adjustment amplitude of the current PWM signal duty ratio according to the real-time resistance value of the potentiometer 310, and correspondingly increase or decrease the duty ratio of the PWM signal currently output to the rotation speed adjusting circuit 140 according to the adjustment amplitude, so as to realize the rotation speed adjustment of the hand-held mixer in the high-speed gear and the low-speed gear.

Referring to fig. 3, 4, 6 and 9, in one embodiment, the housing 500 is provided with a movable slot 511, and the speed adjusting trigger assembly 400 includes a trigger seat 410 and a trigger member 420, and the trigger member is rotatably disposed in the housing and is in transmission connection with the potentiometer 310; the trigger piece 420 is disposed on the trigger seat 410, one end of the trigger piece 420 penetrates out of the housing 500 from the movable slot 511, and the trigger piece 420 is reciprocally disposed in the movable slot 511.

It can be understood that the movable slot 511 has a first position and a second position, the first end of the trigger piece 420 is connected to the outer wall surface of the side wall of the trigger seat 410, and the second end of the trigger piece 420 is disposed through the movable slot 511; the trigger 420 is configured to reciprocate between a first position and a second position of the movable slot 511 after being triggered. In the present embodiment, the housing 500 may have an inner wall surface and an outer wall surface, wherein the cross-sectional shape of the inner wall surface of the housing 500 in the axial direction of the housing 500 may be circular, elliptical, etc., which is not limited herein; the extending direction of the movable groove 511 may be a circumferential direction of the housing 500, and one of the first and second positions may be an initial position and the other may be an end position. The side wall may have an outer wall surface facing the inner wall surface of the housing 500 and an inner wall surface facing away from the inner wall surface of the housing 500, the first end of the trigger member 420 may be fixedly connected to the outer wall surface of the side wall of the trigger member 420, and the other end may be extended out from the movable slot 511, so that a user may drive the trigger seat 410 to rotate in the housing 500 by triggering the second end of the trigger seat 410 to reciprocate in the extending direction of the movable slot 511, so that the rotating trigger seat 410 may perform resistance adjustment on the potentiometer 310 through transmission connection. In the embodiment of fig. 4-6, the trigger angle of the trigger 420 may be 60 degrees to 120 degrees.

Referring to fig. 4 and 7, in an embodiment, the trigger seat 410 has a side wall opposite to an inner wall of the housing 500, and an outer wall surface of the side wall is adapted to a shape of the inner wall of the housing 500. The axial cross-sectional shape of the housing 500 may be nearly circular; the trigger seat 410 may be in a shape of a near fan as a whole, and a groove with a shape of a near fan is provided in the trigger seat 410, and an opening direction of the groove may be consistent with an opening direction of the trigger seat 410, so that the trigger seat 410 may form a side wall with an arc-shaped axial section shape, so that an outer wall surface shape of the side wall may be adapted to an inner wall shape of the near housing 500. Of course, in other embodiments, the cross-sectional shape of the outer wall of the sidewall may be rectangular or other shapes, which are not limited herein. The lower part of the trigger seat 410 may be further provided with a guide rib 414 matching the shape of the outer wall surface of the side wall thereof. So set up, not only can provide the direction for the removal of trigger 420, still make the second end of trigger 420 wear out to the shell from movable slot 511 to the user stirs the regulation with the hand, is favorable to improving speed regulation assembly's trigger convenience.

Optionally, the second end of the trigger piece 420 may be bent and extended along a preset direction, such as an axial direction of the housing 500, so as to increase a contact surface when the user adjusts, which is beneficial to improving the comfort of adjustment.

Referring to fig. 7 and 8, in an embodiment, the trigger seat 410 is provided with a receiving hole 411 and a limiting slot 412 communicating with the receiving hole 411; the speed regulation triggering assembly 400 further comprises a speed regulation shaft 430, wherein the speed regulation shaft 430 comprises a first end 431, a second end 432 and a shaft body positioned between the first end 431 and the second end 432, and the shaft body is connected with a limiting part 434; the first end 431 of the speed adjusting shaft 430 is disposed in the accommodating hole 411, the second end 432 is clamped with the resistance adjusting hole of the potentiometer 310, and at least a portion of the limiting portion 434 is limited in the limiting slot 412.

In the present embodiment, the accommodating hole 411 may be disposed through the trigger seat 410; the axial sectional shape of the receiving hole 411 may be adapted to the axial sectional shape of the first end 431 of the speed adjusting shaft 430 such that the first end 431 of the speed adjusting shaft 430 may be inserted into the receiving hole 411. The upper surface of the trigger seat 410 may further be provided with a half or full turn of buckle corresponding to the accommodating hole 411, so as to fix the first end 431 of the speed adjusting shaft 430 when penetrating the accommodating hole 411. The limiting portion 434 may be a protruding piece extending along the axial direction of the speed adjusting shaft 430 and connected to the shaft body 433, so that when the first end 431 of the speed adjusting shaft 430 is disposed in the accommodating hole 411, the limiting portion 434 is partially or completely limited in the limiting groove 412, so that the speed adjusting shaft 430 may rotate along with the rotation of the trigger seat 410.

In addition, the potentiometer 310 may have a resistance adjustment hole, and the real-time resistance of the potentiometer 310 may be proportional to the rotation amplitude of the resistance adjustment hole. The cross-sectional shape of the second end 432 of the speed adjusting shaft 430 may be adapted to the cross-sectional shape of the resistance adjusting hole, for example, in the embodiment shown in fig. 8, the cross-sectional shapes of the second end 432 of the speed adjusting shaft 430 and the resistance adjusting hole may be hexagonal, so that the second end 432 of the speed adjusting shaft 430 may be clamped in the resistance adjusting hole, so that when the speed adjusting shaft 430 rotates along with the trigger seat 410, the speed adjusting shaft 430 may drive the resistance adjusting hole of the potentiometer 310 to rotate, thereby adjusting the resistance of the potentiometer 310.

Referring to fig. 7, in an embodiment, the trigger seat 410 is provided with a plurality of protrusions 413, and the plurality of protrusions 413 are arranged to form a damping area; a damping member 600 is disposed in the housing 500, and the damping member 600 abuts against the damping region.

It is understood that the protrusion 413 may be a columnar protrusion 413 or a dot-shaped protrusion 413; when the protrusion 413 is a columnar protrusion 413, the cross-sectional shape of the protrusion 413 may be triangular, semicircular, rectangular, etc., and the protrusions 413 may be arranged along a predetermined direction and disposed on the upper surface of the trigger seat to form a damping area; when the protrusion 413 is a dot-shaped protrusion 413, a hemispherical, polygonal pyramid-shaped or rectangular parallelepiped-shaped protrusion 413 may be used, and a plurality of protrusions 413 may be arranged in a dot pattern to form a damping region. The damping member 600 may be implemented using beads or metal. In this way, when the trigger piece 420 is triggered to drive the trigger seat 410 to rotate, the damping area can be continuously contacted with the damping piece 600 under the action of the rotating trigger seat 410, so as to form a damped adjusting feel, which is beneficial to improving the adjusting experience of the user.

Referring to fig. 5 and 6, in an embodiment, a positioning channel 511 is formed in the housing 500 corresponding to the damping area, a first end 610 of the damping member 600 abuts against the damping area through the positioning channel 511, and a second end 620 of the damping member 600 abuts against the housing 500; the first end of the damping member 600 is movably disposed with respect to the damping region.

It will be appreciated that when the trigger member 420 moves in the movable slot 511, the first end of the damping member 600 is movably disposed in the damping region, and the positioning channel 511 can be adapted to the damping member 600. The damping member 600 may have opposite first and second ends 610, 620, wherein each of the first and second ends 610, 620 of the damping member 600 may have a conical shape, such as a half cone shape, a triangle cone shape, etc., without limitation. By this arrangement, the positioning channel 511 can provide support for the damping member 600 during the rotation of the trigger seat 410, so as to avoid the damping member 600 from displacing along with the rotation of the trigger seat 410 and affecting the damping adjustment feel in the subsequent process, thereby being beneficial to improving the triggering stability of the damping adjustment feel.

Referring to fig. 3 to 7, the housing 500 includes an upper housing 510 and a lower housing 520, wherein an upper cover 540 is disposed on a side of the upper housing 510 away from the lower housing 520, and a positioning channel 511 is disposed in the upper housing 510; the trigger seat 410 is disposed on the lower housing 520 and has an upper surface facing the upper housing 510, and the damping region is disposed on the upper surface of the trigger seat 410.

It is understood that the movable slot 511 is provided on the upper housing 510 and/or the lower housing 520. That is, the movable groove 511 is provided on the upper housing 510; alternatively, the movable groove 511 is provided on the lower housing 520; alternatively, the movable slot 511 is provided on the upper and lower cases 510 and 520, and a gap may be provided at a connection portion between at least one of the upper and lower cases 510 and 520 and the other, so as to surround the gap to form the movable slot when the upper and lower cases 510 and 520 are assembled. The trigger seat 410 can be arranged at one end of the lower housing 520 close to the upper housing 510, so that an operator can mount or dismount the damping member 600 without mounting the upper housing 510 on the upper cover 540, and the mounted damping member 600 can abut against the damping area under the action of gravity to realize damping adjustment handfeel, thereby being beneficial to improving the mounting and dismounting convenience of the damping member 600. It should be noted that, the distance of the damping area in the extending direction of the inner wall of the housing 500 needs to correspond to the triggerable amplitude of the trigger member 420 in the movable slot, so as to ensure that the second end of the damping member 600 can always abut against the damping area when the trigger member 420 is triggered.

Referring to fig. 6, in an embodiment, the second end of the damping member 600 abuts against the housing through the elastic member 513. Specifically, the second end of the damping member 600 may be abutted to the upper cover 540 through the elastic member 513 such as a spring, so that not only the abutting force between the damping member 600 and the damping region is ensured under the pressure of the elastic member 513, thereby ensuring the adjusting feel of damping, but also the second end of the damping member 600 is prevented from wearing the upper cover 540 under the action of the protrusion 413 during the movement of the trigger member 420.

In one embodiment, the positioning channel 511 has a via 512, and the radial cross-sectional area of the via 512 is smaller than the radial cross-sectional area of the positioning channel 511; the first end 610 of the damping member 600 abuts the damping region through the via 512; the damping member 600 has a damping seat 630 between the first end 610 and the second end 620, the damping seat 630 of the damping member 600 has a limiting section, and the radial cross-sectional area of the limiting section of the damping member 600 is not greater than the radial cross-sectional area of the positioning channel 511 and is not less than the radial cross-sectional area of the through hole 512.

In this embodiment, the radial cross-sectional shape of the damping mount 630 may be adapted to the radial cross-sectional shape of the via 512. The cross-sectional shape of the damping seat 630, the cross-sectional shape of the via hole 512, and the cross-sectional shape of the limiting segment may be circular, polygonal, etc., and is not limited herein. According to the scheme, the size of the cross section area of the limiting section along the radial direction is arranged between the cross section area of the positioning channel 511 and the cross section area of the through hole 512, so that when the damping piece 600 is installed, the first end 610 of the damping piece 600 can penetrate through the through hole 512 until the limiting part 434 is abutted with the bottom end of the positioning channel 511, the damping piece 600 is prevented from directly falling into the lower shell 520 when the upper shell 510 is detached, and the convenience in dismounting of the damping piece 600 is improved.

Referring to FIG. 4, in one embodiment, a lower housing 520 of the hand-held mixer has a circuit board holder 701 disposed therein, the circuit board holder 701 being adapted for mounting a circuit board 300; a battery compartment 702 may be formed in the circuit board holder 701, and the battery compartment 702 is used to mount a battery 703. The battery 703 may be connected with the battery charging board 704, the battery charging board 704 may be disposed in the upper housing 510, the upper housing 510 may further be provided with a charging interface electrically connected with the battery charging board 704, where the charging interface is used to connect with a charging wire, to access a power source transmitted by the charging wire and output to the battery charging board 704, so that a power management circuit on the battery charging board 704 may convert the accessed power source into a corresponding battery charging voltage and a battery charging power source and output the corresponding battery charging voltage to the battery 703, thereby implementing charging of the battery 703, where the charging interface may be any one or more combinations of a MICRO USB type interface, a type-C type interface, a 30-PIN charging interface, a light interface, and the like; the charging interface can be further provided with an interface sheath 705, the interface sheath 705 can be matched with the type of the charging interface, so that the charging interface can be inserted when the charging interface is not connected with a charging wire, and foreign matters such as food residues and water drops can be prevented from entering the charging interface when the charging interface is not charged to influence the charging process of the battery, so that the charging interface can be protected. The upper shell 510 may further have a first opening and a second opening, and the key S of the start-stop trigger circuit 110 may be mounted on the switch bracket 706 through a spring, and the switch bracket 706 may be mounted at the first opening and may be electrically connected to the circuit board 300; the second opening may be used for providing a lampshade 707, in which an indicator light may be accommodated in the lampshade 707, and the indicator light may be electrically connected to the circuit board 300, so as to emit corresponding indicator lights under the control of corresponding functional circuits on the circuit board 300, so as to prompt various device states such as a battery 703 electric state, a battery 703 charging state, whether the hand-held mixer works, and the like.

Alternatively, the motor 200 may be disposed at an end of the lower housing 520 remote from the upper housing 510, the motor 200 may be mounted on the motor bracket 708, and the power input terminals (M+ and M-) of the motor 200 may be connected to the circuit board 300; of course, at least one of a clutch 709 and a crash pad 710 may also be provided between the motor bracket 708 and the motor 200.

Optionally, an end of the lower housing 520 far away from the upper housing 510 is further connected with a stirring member 711, the stirring member 711 is in transmission connection with the motor 200, the stirring member 711 includes a stirring rod 712 and a stirring blade 713, the stirring blade 713 is detachably provided with an end of the stirring rod 712 far away from the lower housing 520, and the stirring blade 712 can perform a mincing operation on food by using the rotary motion of the motor 200.

The foregoing description is only of the optional embodiments of the present utility model, and is not intended to limit the scope of the utility model, and all the equivalent structural changes made by the description of the present utility model and the accompanying drawings or the direct/indirect application in other related technical fields are included in the scope of the utility model.

Claims (11)

1. An anti-misoperation electric shock machine control circuit is used for controlling the motor to work and is characterized in that the anti-misoperation electric shock machine control circuit comprises:

The start-stop trigger circuit is used for outputting a first start-stop trigger signal after being triggered by a first preset trigger mode and outputting a second start-stop trigger signal after being triggered by a second preset trigger mode;

the motor driving circuit is respectively connected with the motor and the start-stop trigger circuit; the method comprises the steps of,

the main control circuit is respectively connected with the output end of the start-stop trigger circuit and the motor driving circuit, and is used for unlocking to enter a working state when receiving a first start-stop trigger signal; and the motor driving circuit is used for outputting an operation control signal to the motor driving circuit when the motor driving circuit receives the second start-stop trigger signal in a working state;

and the motor driving circuit is used for driving the motor to rotate when receiving the second start-stop trigger signal and the operation control signal.

2. The anti-electric shock motor control circuit of claim 1, wherein the number of start-stop trigger circuits is multiple, and the motor drive circuit comprises motor drive branches corresponding to the number of start-stop trigger circuits;

the first controlled end of each motor driving branch is connected with the output end of one start-stop trigger circuit so as to be correspondingly connected with a second start-stop trigger signal output by the start-stop trigger circuit;

The second controlled end of each motor driving branch is connected with one control end of the main control circuit so as to be correspondingly connected with an operation control signal output by the control end;

each motor driving branch is used for driving the motor to rotate when receiving the second start-stop trigger signal and the operation control signal.

3. The anti-false electric shock motor control circuit of claim 2, wherein the motor drive branch includes a first diode, a first capacitor, a first switching device, a second switching device, a first resistor, and a second resistor;

the input end and the controlled end of the first switching device are a first controlled end and a second controlled end of a motor driving branch where the first switching device is located respectively, the output end of the first switching device is connected to the controlled end of the second switching device through the first resistor, the controlled end of the second switching device is grounded through the second resistor, the output end of the second switching device is grounded, the input end of the second switching device is connected to a power supply voltage through the first diode, the first capacitor is connected with the first diode in parallel, and the two ends of the first capacitor are connected with the input end of the motor.

4. A false electric shock prevention motor control circuit as set forth in claim 3 wherein the second switching devices in each of said motor drive branches are connected in series, and the outputs of each of said start-stop trigger circuits are interconnected.

5. The anti-false electric shock motor control circuit of claim 3, further comprising:

the rotating speed regulating circuit is arranged on a power supply path between the power supply voltage and the ground of the output end of the second switching device, and the controlled end of the rotating speed regulating circuit is connected with the main control circuit;

the rotating speed adjusting circuit is used for adjusting the rotating speed of the motor under the control of the main control circuit.

6. The anti-false electric shock motor control circuit of claim 5, further comprising:

the detection end of the current detection circuit is connected with the power supply channel, and the output end of the current detection circuit is connected with the main control circuit;

the current detection circuit is used for detecting the current on the power supply path and outputting a current detection signal to the main control circuit, so that the main control circuit controls the rotating speed regulating circuit to regulate the rotating speed of the motor according to the received current detection signal.

7. The anti-false electric shock motor control circuit according to any one of claims 1 to 6, wherein the first preset trigger mode is at least one key trigger;

and/or, the second preset triggering mode is long-press triggering.

8. An anti-false touch motor assembly, the anti-false touch motor assembly comprising:

a motor; the method comprises the steps of,

the electric shock prevention motor control circuit of any one of claims 1 to 7, connected to the motor.

9. A hand-held mixer, the hand-held mixer comprising:

a housing;

the motor is arranged in the shell;

the key is arranged on the shell;

the stirring piece is arranged on the shell and is in driving connection with the motor; the method comprises the steps of,

the electric shock preventing motor control circuit according to any one of claims 1 to 7, wherein the electric shock preventing motor control circuit is connected to the motor for controlling the stirring member according to the trigger signal of the key.

10. The hand-held mixer of claim 9 wherein a circuit board is disposed within said housing, said circuit board having said anti-misuse motor control circuit and potentiometer disposed thereon; the shell is provided with a speed regulation trigger component in transmission connection with the potentiometer, and the speed regulation trigger component is used for regulating the resistance value of the potentiometer after being triggered, so that the anti-misoperation electric shock motor control circuit correspondingly regulates the rotating speed of the motor according to the resistance value regulated by the potentiometer.

11. The hand-held mixer of claim 10 wherein said housing has a movable slot therein, said speed regulating trigger assembly comprising a trigger seat and a trigger member, said trigger member rotatably disposed within said housing and drivingly connected to said potentiometer; the trigger piece is arranged on the trigger seat, one end of the trigger piece penetrates out of the shell from the movable groove, and the trigger piece is arranged in the movable groove in a reciprocating manner.