CN216147850U

CN216147850U - Food processor with child lock

Info

Publication number: CN216147850U
Application number: CN202122263365.1U
Authority: CN
Inventors: 朱泽春; 杜春年
Original assignee: Hangzhou Joyoung Household Electrical Appliances Co Ltd
Current assignee: Hangzhou Joyoung Household Electrical Appliances Co Ltd
Priority date: 2021-09-17
Filing date: 2021-09-17
Publication date: 2022-04-01
Anticipated expiration: 2031-09-17

Abstract

The utility model relates to the technical field of kitchen cooking appliances, in particular to a food processor with a child lock, which comprises a machine body, a motor control circuit and a child lock key detection circuit, wherein the motor control circuit and the child lock key detection circuit are arranged in the machine body; the motor control circuit comprises a main control chip, a motor and a motor drive circuit which is respectively connected with the main control chip and the motor; the child lock key detection circuit is coupled with the main control chip and used for releasing the locking state of the child lock key through the child lock key and sending a corresponding unlocking signal to the main control chip so that the main control chip limits the starting of the motor when not receiving the unlocking signal and releases the limitation on the motor when receiving the unlocking signal; the electronic child lock is adopted, a mechanical structure is omitted, and the electronic child lock is convenient for a user to operate when the user holds the electronic child lock.

Description

Food processor with child lock

Technical Field

The utility model relates to the technical field of kitchen cooking appliances, in particular to a food processing machine with a child lock.

Background

The food processing machine of adjustable speed in the existing market, especially arrange the stick, generally adopt micro-gap switch's trigger starting mode, as long as micro-gap switch once triggers, the motor will start immediately. The blade of the stirring food processing machine such as a cooking rod is usually exposed outside and is very easy to contact with a human body, and if the micro switch is triggered by mistake, serious personal injury is possibly caused. To prevent false starts, food processors of this type are provided with child locks to improve the safety of the device.

The technical scheme of the existing child lock generally adopts the safety protection measure of a mechanical child lock, when the mechanical child lock is used, a user needs to press a child lock key and a working key by two fingers at the same time, a motor can be started, and the machine can work. Because the child lock is a mechanical key, a certain pressure needs to be kept after the child lock is pressed down, and like a food processor such as a cooking rod which can be used only by being held by a user, if the mechanical child lock is used for a working mode that two fingers press the key at the same time, the user experience is not good if the user holds the mechanical child lock for a long time and the pressure on the two fingers is also kept.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem of overcoming the defects of the mechanical child lock of the existing food processing machine, and provides the food processing machine with the child lock.

In order to achieve the purpose, the utility model is realized by the following technical scheme: a food processor with a child lock comprises a machine body, a motor control circuit and a child lock button detection circuit, wherein the motor control circuit and the child lock button detection circuit are arranged in the machine body; the motor control circuit comprises a main control chip, a motor and a motor drive circuit which is respectively connected with the main control chip and the motor; the child lock key detection circuit is coupled to the main control chip and used for releasing the locking state of the child lock key through the child lock key and sending a corresponding unlocking signal to the main control chip, so that the main control chip limits the starting of the motor when the unlocking signal is not received and limits the motor when the unlocking signal is received.

The further preferable scheme of the utility model is as follows: the main control chip also comprises a timing module;

and the signal input end of the timing module is coupled with a loop where the motor is located or coupled with the motor driving circuit, the signal output end of the timing module is coupled with the main control chip and used for timing when the motor stops working, and when the timing number is more than or equal to N seconds, the main control chip sends a reset signal to reset the child lock key to be in a locking state, wherein N belongs to [0.5,5 ].

The further preferable scheme of the utility model is as follows: the motor control circuit also comprises a stop key coupled to the main control chip and used for sending a stop signal to the main control chip after being triggered by a user so as to immediately control the motor to stop working.

The further preferable scheme of the utility model is as follows: and after receiving the stop signal, the main control chip immediately resets the child lock key to a locking state.

The further preferable scheme of the utility model is as follows: the food processor is a hand-held stirrer, and a handle is arranged on the machine body; the stop button is arranged on the side surface of the handle, and the child lock button is arranged at the end part of the handle.

The further preferable scheme of the utility model is as follows: the locking device also comprises an indicator light circuit for displaying the locking state and the unlocking state; the indicating lamp circuit comprises two LED indicating lamps, and the two LED indicating lamps are coupled to the main control chip.

The further preferable scheme of the utility model is as follows: when the lock is in an locked state, the main control chip controls one LED indicator lamp to be switched on and controls the other LED indicator lamp to be switched off; when the lock is unlocked, the main control chip controls one of the LED indicating lamps to be switched off and controls the other LED indicating lamp to be switched on.

The further preferable scheme of the utility model is as follows: the anode of one LED indicator lamp is coupled to the direct current power supply, and the cathode of the LED indicator lamp is coupled to the second pin of the main control chip; the positive electrode of the other LED indicator lamp is coupled to the direct-current power supply, and the negative electrode of the other LED indicator lamp is coupled to the third pin of the main control chip;

when the main control chip is in an unlocked state, the second pin of the main control chip outputs a low level, and the third pin outputs a high level; and when the electronic device is in an unlocking state, the second pin of the main control chip outputs a high level, and the third pin outputs a low level.

The further preferable scheme of the utility model is as follows: the child lock key comprises a key cap and a microswitch; the food processor is a handheld stirrer, a handle is arranged on the machine body, the micro switch is arranged in the handle, and the keycap is arranged at the end part of the handle; when the micro switch is triggered through the keycap, an unlocking signal is generated.

The further preferable scheme of the utility model is as follows: the child lock key is an induction touch key; the food processor is a handheld stirrer, the machine body is provided with a handle, and the induction touch key comprises an induction sheet or an induction ring arranged at the end part of the handle; and when the child lock key detection circuit detects that the induction touch key is triggered by a user, an unlocking signal is generated.

In conclusion, the utility model has the following beneficial effects: the food processor adopts an electronic child lock without a mechanical structure, so that the food processor is convenient for a user to operate when holding; when the touch button is used, the touch button is touched lightly, so that the mistaken touch of children is prevented, and the safety of the product is improved; after the initial electrification and the work are finished, the lock can be automatically locked, and the lock is safe and effective; meanwhile, the unlocking and locking states are prompted by the indicating lamp, and a user can conveniently know the condition of the equipment.

Drawings

Fig. 1 is a block diagram showing the structure of a food processor according to embodiment 1.

Fig. 2 is a schematic circuit diagram of a part of the food processor described in embodiment 1.

Fig. 3 is an exploded view of the food processor described in embodiment 1.

Wherein:

100. a cup body; 110. a stirring rod; 200. a cover body; 300. a body; 310. a child lock button; 320. and stopping pressing the key.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.

In the present invention, unless otherwise expressly stated or limited, the terms "connected," "secured," and the like are to be construed broadly, and for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In addition, the descriptions related to "first", "second", etc. in the present invention are only for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

Example 1:

as shown in fig. 1 and 2, the present embodiment provides a food processor with a child lock, the food processor is a hand-held blender, the blender includes a blending cup for holding food, a machine body 300 disposed on the blending cup, a motor control circuit disposed in the machine body, and a child lock button detection circuit.

The stirring cup comprises a cup body 100 and a cover body 200, wherein the cover body can be screwed with the cup opening of the cup body to be fastened or unscrewed. The cover body is provided with a stirring rod 110, the tail end of the stirring rod is provided with a cutter for stirring and crushing food, and the upper end of the stirring rod penetrates through the cover body and is fixed in the middle of the cover body through a bearing and can rotate freely. The machine body is in a cylindrical shape, and a rechargeable battery for supplying power to each circuit and the motor is also arranged in the machine body. The head end of organism can dismantle with the lid and be connected through the spring buckle, and when organism and lid were connected, the axle and the puddler of motor rotated and are connected. The machine body is provided with a handle which is positioned at the tail part of the machine body (the exposed side of the motor shaft is the head part of the machine body), and a user can stably hold the machine body through the handle when using the machine body.

In this embodiment, the motor control circuit in the body includes a main control chip, a motor, and a motor driving circuit respectively connecting the main control chip and the motor. The child lock button detection circuit is coupled to the main control chip, and is configured to release the locked state thereof through the child lock button 310 and send a corresponding unlocking signal to the main control chip, so that the main control chip limits the start of the motor when not receiving the unlocking signal and releases the limitation on the motor when receiving the unlocking signal.

When the child lock key is implemented, the induction touch key is adopted and comprises an induction sheet (or an induction ring) arranged at the end part of the handle. When the child lock key detection circuit detects that the induction touch key is triggered by a finger or a palm of a user, an unlocking signal is generated and can be received by the main control chip.

In another practical alternative, the child lock button may further employ a micro switch and a key cap covering the micro switch, the micro switch is disposed in the handle, and the key cap is disposed at an end of the handle. When the micro switch is triggered through the keycap, an unlocking signal can be generated and received by the main control chip. With this embodiment, the same effect as that of the touch key sensing can be achieved, and the details will not be described here.

The electronic key is adopted in the child lock, so that a spring is not used for resetting the key after a user releases his hand. Therefore, in this embodiment, the main control chip further includes a timing module. The signal input end of the timing module is coupled to a loop (or coupled to the motor driving circuit) where the motor is located, and the signal output end of the timing module is coupled to the main control chip and used for timing when the motor stops working. And when the number of times is more than or equal to N seconds, sending a reset signal to the main control chip to reset the child lock key to be in a locking state, wherein N belongs to [0.5,5], and the embodiment is selected to be 2 seconds. The specific circuit is that a voltage sensor can be arranged on the motor, the power supply is switched on when the motor works, and the voltage of the motor can be detected through the voltage sensor. When the voltage is obtained and disappears, the timing module starts to time, and when the motor is restarted, the timing of the timing module is reset to zero. The timing module plays a role of a return spring in the mechanical child lock, and once a user releases a hand, the motor returns to a locking state again after stopping working for 2 seconds.

In some emergency situations, the user needs to stop the motor urgently, but needs to stabilize the machine body by hand, so the motor control circuit in this embodiment further includes a stop button 320 coupled to the main control chip, for sending a stop signal to the main control chip after being triggered by the user, so as to immediately control the motor to stop working. Meanwhile, after the main control chip receives the stop signal, the child lock key is immediately reset to be in a locked state, and the next unlocking start is waited. In this embodiment, the stop button and the start button are the same, and the first time of pressing is the start, and the second time of pressing is the stop.

In order to allow the user to visually observe whether the child lock button is in the locked state or the unlocked state, the food processor of the present embodiment further includes an indicator circuit for displaying the locked state and the unlocked state. The indicating lamp circuit comprises two LED indicating lamps, and the two LED indicating lamps are coupled to the main control chip. Two LED pilot lamps adopt green and red respectively, and green pilot lamp represents the unblock state, and red pilot lamp represents the state of locking.

When the lock is in the locked state, the main control chip controls the red LED indicator lamps to be switched on and controls the green LED indicator lamps to be switched off. When the lock is unlocked, the main control chip controls the red LED indicator lamps to be switched off and controls the green LED indicator lamps to be switched on.

In one embodiment, the red LED indicator has a positive electrode coupled to the dc power source and a negative electrode coupled to the second pin of the main control chip, and the green LED indicator has a positive electrode coupled to the dc power source and a negative electrode coupled to the third pin of the main control chip.

When the lock is in an on-lock state, the second pin of the main control chip outputs a low level, the red LED indicator lamp is switched on, the third pin of the main control chip outputs a high level, and the green LED indicator lamp is switched off. When the lock is unlocked, the second pin of the main control chip outputs high level, the red LED indicator lamp is disconnected, the third pin of the main control chip outputs low level, and the green LED indicator lamp is connected. Through the LED indicator lights of two colors, the user can clearly know the current state of the child lock.

The specific working principle of the embodiment is as follows: as shown in FIG. 2, C1 and C2 in the figure are filter capacitors and are connected between the No. 1 pin and No. 8 pin of the MCU. R1, R2 are current-limiting resistors, LED1 and LED2 are green and red lamps, and are respectively connected with the No. 3 pin and No. 2 pin of the MCU, and the TRIC is a motor driving signal.

SW1 is child lock button, one end is connected to MCU No. 7 pin, the other end is connected to ground. The Start/Stop signal is a speed gear signal. (the gear signal can be the output electric signal of a potentiometer and a linear Hall lamp)

After the power is on, the motor driving signal is turned off, the speed regulation gear signal is invalid before the child lock is unlocked, and the red LED flickers to prompt a user to use the child lock after unlocking.

After SW1 is pressed, the child lock is unlocked. The speed regulation gear signal is effective, when the effective speed regulation gear signal is received, the motor driving signal is turned on, the motor works, and the green LED is normally on in the working process.

When the child lock is pressed for 2s and does not receive a starting signal or receives a stopping signal in the working process, the child lock is locked immediately, and the child lock can be started to work after being unlocked again.

Claims

1. A food processor with a child lock comprises a machine body, a motor control circuit and a child lock button detection circuit, wherein the motor control circuit and the child lock button detection circuit are arranged in the machine body; the motor control circuit comprises a main control chip, a motor and a motor drive circuit which is respectively connected with the main control chip and the motor; the method is characterized in that: the child lock key detection circuit is coupled to the main control chip and used for releasing the locking state of the child lock key through the child lock key and sending a corresponding unlocking signal to the main control chip, so that the main control chip limits the starting of the motor when the unlocking signal is not received and limits the motor when the unlocking signal is received.

2. The food processor of claim 1, wherein the master control chip further comprises a timing module;

3. The food processor of claim 1, wherein the motor control circuit further comprises a stop button coupled to the main control chip for sending a stop signal to the main control chip upon activation by a user to immediately control the motor to stop operating.

4. The food processor of claim 3, wherein the main control chip resets the child lock button to the locked state immediately after receiving the stop signal.

5. The food processor of claim 3, wherein the food processor is a hand-held blender, the body having a handle; the stop button is arranged on the side surface of the handle, and the child lock button is arranged at the end part of the handle.

6. The food processor of claim 1, further comprising an indicator light circuit for displaying a locked status and an unlocked status; the indicating lamp circuit comprises two LED indicating lamps, and the two LED indicating lamps are coupled to the main control chip.

7. The food processor of claim 6, wherein in the locked state, the main control chip controls one of the LED indicator lights to be on and the other LED indicator light to be off; when the lock is unlocked, the main control chip controls one of the LED indicating lamps to be switched off and controls the other LED indicating lamp to be switched on.

8. The food processor of claim 7, wherein one of the LED indicator lights has a positive terminal coupled to the DC power source and a negative terminal coupled to the second pin of the main control chip; the positive electrode of the other LED indicator lamp is coupled to the direct-current power supply, and the negative electrode of the other LED indicator lamp is coupled to the third pin of the main control chip;

9. The food processor of claim 1, wherein the child-lock button includes a key cap and a microswitch; the food processor is a handheld stirrer, a handle is arranged on the machine body, the micro switch is arranged in the handle, and the keycap is arranged at the end part of the handle; when the micro switch is triggered through the keycap, an unlocking signal is generated.

10. The food processor of claim 1, wherein the child lock button is an inductive touch button; the food processor is a handheld stirrer, the machine body is provided with a handle, and the induction touch key comprises an induction sheet or an induction ring arranged at the end part of the handle; and when the child lock key detection circuit detects that the induction touch key is triggered by a user, an unlocking signal is generated.