Novel stepless speed change chopper structure

Abstract

The utility model relates to a novel stepless speed change chopper structure which comprises a machine head assembly and a cup body, a cutter shaft assembly is arranged in the cup body, the machine head assembly comprises a shell, a driving motor, a transmission assembly and a control circuit board, and the driving motor, the transmission assembly and the control circuit board are arranged in the shell. The driving motor is in transmission connection with the cutter shaft assembly through the transmission assembly, and the control circuit board is electrically connected with the driving motor; the shell is provided with a potentiometer, the potentiometer is electrically connected with the control circuit board, the potentiometer is provided with a stepless speed change knob, and the potentiometer can be driven to act through the stepless speed change knob; the method is convenient to use, and the user experience is improved.

Description

Technical Field

[0001] This utility model relates to the field of shredder technology, and in particular to a novel continuously variable speed shredder structure. Background Technology

[0002] A food processor is a kitchen appliance used for chopping, mixing, and blending food. It typically consists of a container and an electric motor with blades. Users can put ingredients into the container, and the motor will chop or blend them evenly.

[0003] Because current motors are directly connected to an external power source for starting and stopping, they cannot achieve stepless speed control based on the required start time, thus failing to meet users' different needs for fineness. For example, when making complementary foods, babies of different ages have different requirements for the fineness of the food, and when making ingredients, different ingredients have different requirements for the fineness of the ingredients. Different users also have very different taste preferences, which leads to problems in actual use.

[0004] Therefore, some products with dual speed settings have appeared on the market. However, since these dual speed settings are basically button-operated, they have two major drawbacks. First, there is a gap between the button and the top cover. If the user's hands are wet, water can seep into the machine through this gap, posing a risk of electric shock. Second, single-finger button operation can cause the machine to jump when it encounters significant resistance during operation, posing a safety hazard, potentially leading to loss of control of the cup and mechanical injury to the consumer. Furthermore, these settings only offer two different speeds, failing to meet the actual personalized needs of consumers.

[0005] Based on this, in order to solve the above problems, we propose a novel continuously variable speed shredder structure. Utility Model Content

[0006] The purpose of this utility model is to address the aforementioned shortcomings in the existing technology by proposing a novel continuously variable speed shredder structure that is convenient to use and improves the user experience.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A novel continuously variable speed shredder structure includes a head assembly and a cup body. A cutter shaft assembly is disposed in the cup body. The head assembly includes a housing, a drive motor, a transmission assembly, and a control circuit board disposed in the housing. The drive motor is connected to the cutter shaft assembly through the transmission assembly, and the control circuit board is electrically connected to the drive motor.

[0009] A potentiometer is provided on the outer casing, and the potentiometer is electrically connected to the control circuit board. A continuously variable speed knob is provided on the potentiometer, and the potentiometer can be driven to operate by the continuously variable speed knob.

[0010] A top cover for connecting a push-button switch is provided on the outer casing.

[0011] Furthermore, a mounting hole is provided on the outer casing, and an operation indicator ring is provided in the mounting hole, with the continuously variable transmission knob disposed within the operation indicator ring.

[0012] Furthermore, the operation indicator ring and the outer casing are fastened together by a first snap-fit ​​structure.

[0013] Furthermore, a potentiometer bracket is provided within the operation indicator ring, and the potentiometer is fixed on the potentiometer bracket.

[0014] Furthermore, the potentiometer bracket and the operation indicator ring are fastened together by a second snap-fit ​​structure.

[0015] The novel continuously variable speed shredder structure proposed in this utility model has the following advantages:

[0016] 1. The stepless speed shredder structure of this utility model is convenient to use and helps to improve the user experience. By rotating the stepless speed knob, the stepless speed knob drives the potentiometer to rotate. The control circuit board controls the speed of the drive motor according to the feedback of the potentiometer, thereby realizing stepless speed regulation. This can meet the different fineness requirements of different ingredients and satisfy the personalized needs of users.

[0017] 2. The stepless speed chopper of this utility model can meet the different needs of babies at different growth stages for the fineness of complementary food;

[0018] 3. The continuously variable speed shredder of this utility model adopts a high-waterproof operating indicator ring, which ensures that even if the user operates it with water, water will not flow into the machine body, thus avoiding the risk of electric shock; 4. The continuously variable speed shredder of this utility model has low cost and good effect. Attached Figure Description

[0019] Figure 1 This is a three-dimensional schematic diagram of the continuously variable speed shredder of this utility model;

[0020] Figure 2 This is an exploded view of the continuously variable speed shredder of this utility model;

[0021] Figure 3 This is a partial circuit diagram of the continuously variable speed shredder of this utility model. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0023] Reference Figure 1-3 As one embodiment of this utility model, a novel continuously variable speed shredder structure is disclosed, including a head assembly 1 and a cup body 2. A cutter shaft assembly 3 is disposed in the cup body 2. The head assembly 1 includes a housing 11, a drive motor 12 disposed in the housing 11, a transmission assembly 13 and a control circuit board 14. The drive motor 12 is connected to the cutter shaft assembly 3 through the transmission assembly 13, and the control circuit board 14 is electrically connected to the drive motor 12.

[0024] A potentiometer 4 is provided on the outer casing 11. The potentiometer 4 is electrically connected to the control circuit board 14. A continuously variable speed knob 5 is provided on the potentiometer 4. The potentiometer 4 can be driven to operate by the continuously variable speed knob 5.

[0025] A top cover 8 for controlling the press switch is provided on the top of the outer casing 11. The top cover 8 has a non-perforated surface to prevent water from entering the machine body and causing risks. At the same time, the top cover is convenient for users to hold and press with one or two hands, making the machine work more smoothly.

[0026] The stepless speed shredder structure of this utility model is convenient to use and helps to improve the user experience. By rotating the stepless speed knob 5, the stepless speed knob 5 drives the potentiometer 4 to rotate. The control circuit board 14 controls the speed of the drive motor 12 according to the feedback of the potentiometer 4, thereby realizing stepless speed change, which can meet the different fineness requirements of different ingredients and meet the personalized needs of users.

[0027] The stepless speed chopper of this invention can meet the different needs of babies at different stages of growth for the fineness of complementary food.

[0028] The continuously variable speed shredder of this utility model adopts a high-waterproof operating indicator ring, which ensures that even if the user operates it with water, water will not flow into the machine body, thus avoiding the risk of electric shock.

[0029] The continuously variable speed shredder of this invention is low in cost and effective.

[0030] Preferably, a mounting hole 110 is provided on the outer casing 11, and an operation indicator ring 6 is provided in the mounting hole 110. The continuously variable speed knob 5 is provided in the operation indicator ring 6. The operation indicator ring 6 allows the user to intuitively understand the current working status of the shredder, which helps to improve the user experience.

[0031] More preferably, the operation indicator ring 6 and the outer shell 11 are fastened together by a first snap-fit ​​structure. The structure is simple, the operation indicator ring 6 is easy and reliable to install, and the cost is low, which is conducive to mass production.

[0032] In this embodiment, a potentiometer bracket 7 is provided inside the operation indicator ring 6, and the potentiometer 4 is fixed on the potentiometer bracket 7. Its structure is simple, which facilitates the installation and fixation of the potentiometer 4, and the cost is low, which is conducive to mass production.

[0033] Furthermore, the potentiometer bracket 7 and the operation indicator ring 6 are fastened together by a second snap-fit ​​structure. The structure is simple, the potentiometer bracket 7 is easy and reliable to install, and the cost is low, which is conducive to mass production.

[0034] An adjustment circuit and a protection circuit are provided on the control circuit board 14. The adjustment circuit includes a capacitor C1, one end of which is connected to ACN, and the other end is connected in series with a resistor R2. The other end of the resistor R2 is connected in series with a sliding rheostat RW1. A potentiometer 4 is connected to the sliding rheostat RW1. The output terminal of the sliding rheostat RW1 is connected in series with the drive motor 12. Of course, the other end of the drive motor 12 should be connected to ACL, where ACL is the AC live wire and ACN is the AC neutral wire, thus realizing the power supply to the drive motor 12.

[0035] It also includes a bidirectional thyristor T1, which is connected in parallel to the outside of the capacitor C1, the resistor R2 and the sliding rheostat RW1.

[0036] A bidirectional diode D1 is connected in series at the other end of the capacitor C1, and the other end of the bidirectional diode D1 is connected to the gate of the bidirectional thyristor T1.

[0037] Specifically, in this utility model, the resistance of the sliding rheostat RW1 can be adjusted by potentiometer 4 to charge capacitor C1. When the voltage difference of capacitor C1 reaches 30V, bidirectional trigger diode D1 will conduct, triggering bidirectional thyristor T1 to conduct. At this time, drive motor 12 will work. By rotating the adjustable resistor RW1, the charging time of capacitor C1 to 30V can be controlled.

[0038] When capacitor C1 discharges to a voltage difference of less than 30V, it triggers the bidirectional thyristor T1 to disconnect, capacitor C1 continues to charge, and at the same time, no current flows through the drive motor 12. At this time, it works by relying on the inertia of the previous cycle. By repeating this process, the stepless start and stop of motor 12 can be controlled within a certain period of time, so as to control the power of motor 12 and achieve a better stirring effect on food.

[0039] The working principle of this utility model is as follows: by controlling the disconnection and operation time, the speed of the motor 12 can be arbitrarily adjusted from low speed to high speed. That is, the speed control of the drive motor 12 is achieved by using the conduction time of the control circuit to achieve different power of the motor 12 per unit time.

[0040] In some embodiments, the protection circuit includes a resistor R1 and a capacitor C2. The resistor R1 and capacitor C2 are connected in parallel outside the capacitor C1, the resistor R2 and the sliding rheostat RW1. The resistor R1 and capacitor C2 are connected in series. The resistor R1 and capacitor C2 are used in the bypass to absorb interference and prevent the line from receiving misjudged signals. Similarly, the resistor R2 mentioned above serves to protect the bidirectional trigger diode D1.

[0041] Furthermore, the capacitor C1 and the capacitor C2 have the same capacitance, and the resistor R1 and the resistor R2 have the same resistance. Of course, those skilled in the art will know that in other embodiments, the capacitor C1 and the capacitor C2 may have different capacitances, and the resistor R1 and the resistor R2 may have different resistances.

[0042] Furthermore, a thermistor NTC is connected in series between the capacitor C1 and the ACN. The thermistor NTC can prevent the bidirectional thyristor T1 from being damaged by excessive impact at the moment of startup.

[0043] In summary, this utility model achieves stepless speed regulation of the drive motor 12 through circuit control. First, the resistance value of the sliding rheostat RW1 can be adjusted by controlling the potentiometer 4. By controlling the magnitude of the current, the charging speed of the capacitor C1 can be determined. When the capacitor C1 is fully charged, the circuit is turned on, and the drive motor 12 starts to work. That is, by rotating the control potentiometer 4 to adjust the value of the sliding rheostat RW1, the on-time of the voltage can be obtained. By controlling the off-time and on-time, the speed of the potentiometer 4 can be arbitrarily adjusted from low speed to high speed.

[0044] The above describes the lowest-cost control method of this utility model. Of course, those skilled in the art will know that the motor can also be pulse-speed regulated by controlling the PWM module with a microcontroller or other control methods. These methods are conventional methods for those skilled in the art and will not be elaborated on here.

[0045] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A novel continuously variable speed shredder structure, characterized in that: The device includes a head assembly (1) and a cup body (2). A cutter shaft assembly (3) is disposed inside the cup body (2). The head assembly (1) includes a housing (11), a drive motor (12) disposed inside the housing (11), a transmission assembly (13), and a control circuit board (14). The drive motor (12) is connected to the cutter shaft assembly (3) through the transmission assembly (13). The control circuit board (14) is electrically connected to the drive motor (12). A potentiometer (4) is provided on the outer casing (11). The potentiometer (4) is electrically connected to the control circuit board (14). A continuously variable speed knob (5) is provided on the potentiometer (4). The potentiometer (4) can be driven to move by the continuously variable speed knob (5). A top cover (8) for connecting a push-button switch is provided on the outer casing (11).

2. The novel continuously variable speed shredder structure according to claim 1, characterized in that: A mounting hole (110) is provided on the outer casing (11), and an operation indicator ring (6) is provided in the mounting hole (110). The continuously variable transmission knob (5) is located in the operation indicator ring (6).

3. The novel continuously variable speed shredder structure according to claim 2, characterized in that: The operation indicator ring (6) and the outer shell (11) are fastened together by a first snap-fit ​​structure.

4. The novel continuously variable speed shredder structure according to claim 2, characterized in that: A potentiometer bracket (7) is provided inside the operation indicator ring (6), and the potentiometer (4) is fixed on the potentiometer bracket (7).

5. The novel continuously variable speed shredder structure according to claim 4, characterized in that: The potentiometer bracket (7) and the operation indicator ring (6) are fastened together by a second snap-fit ​​structure.

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