Food processor with safe starting protection device

Abstract

The utility model relates to a food processor with a safe starting protection device, which comprises a base, a cup body and a cup cover, the cup body is selectively and separably connected with the base in a matched mode, and the cup cover is connected with the cup body in a matched mode so as to selectively seal the cup body. According to the food processor with the safe starting protection device, only under the condition that the cup body and the cover body are correctly installed in place, the permanent magnet can close the reed switch, and the transmitting coil can form a loop and generate a magnetic field, so that the magnetic field is detected by the receiving coil and the driving motor is started; potential safety hazards caused by a mechanical locking device are effectively avoided; meanwhile, a non-contact induction mode does not need a complicated mechanical structure, so that the manufacturing cost and the assembling difficulty are reduced, and the cleaning is easier; in addition, the device is not influenced by factors such as vibration and abrasion, and has higher reliability and longer service life; and moreover, safe locking can be realized without additional operation of the user, so that the use experience of the user is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of kitchen appliances, in particular to a food processor with a safety start-up protection device. Background Art

[0002] A food processor is a common household appliance whose primary function is to extract juice from fruits, vegetables, and other ingredients, providing a convenient way for people to consume nutrients. Traditional food processors typically consist of a base with a drive motor, a cup for holding the ingredients, and a lid to seal the cup's opening.

[0003] However, when using a food processor, if the cup body is not correctly installed or the lid is not completely closed, starting the drive motor may cause safety hazards such as food splashing, blades spinning idle, and even personal injury.

[0004] To address this issue, existing technologies typically incorporate additional mechanical components, such as latches and connecting rods, into food processors to form a startup protection device. These mechanical structures connect the cup and lid to the starter circuit of the drive motor. Only when the cup and lid are properly installed can a closed circuit be formed, thereby starting the drive motor.

[0005] However, this mechanical-structure-based starting protection device has many shortcomings: first, its structure is relatively complex, which increases manufacturing costs and assembly difficulty; second, the food processor will produce strong vibrations during operation, which can easily lead to wear and damage of mechanical parts, reducing the reliability and service life of the locking device; in addition, the complex mechanical structure also increases the difficulty of cleaning, easily breeds bacteria, and is not conducive to food hygiene.

[0006] Therefore, under the premise of ensuring safety, further improvements are needed to simplify the food processor's startup protection device, improve reliability, and make it easier to clean, so as to enhance the user experience and product quality. Utility Model Content

[0007] In order to solve the above problems, the utility model provides a food processor with a safe start protection device that can start the drive motor only when the cup body and the cover body are correctly installed in place, effectively avoiding the safety hazards caused by the mechanical locking device.

[0008] In order to achieve the above-mentioned purpose, the food processor with a safe start-up protection device designed in the present invention includes a base, a cup body and a cup lid, the cup body can be selectively detachably matched with the base, the cup lid is matched with the cup body to selectively close the cup body, the base includes a driving motor and a receiving coil; the cup body is provided with a blending and chopping knife group that is transmission-matched with the driving motor, the bottom of the cup body is provided with a transmitting coil, and the side wall of the cup body is also provided with a reed switch electrically connected to the transmitting coil; the bottom of the cup lid is provided with a permanent magnet; wherein, when the cup lid closes the cup body in a preset posture, the permanent magnet causes the reed switch to close, and the transmitting coil generates a magnetic field through the reed switch; when the cup body and the base are matched in a preset posture, and the cup lid closes the cup body in a preset posture, the receiving coil detects the magnetic field generated by the transmitting coil to allow the driving motor to start.

[0009] In order to achieve precise control of the drive motor, the base further includes a control circuit, which is electrically connected to the receiving coil and the drive motor, and is used to control the start-up of the drive motor according to the magnetic field changes detected by the receiving coil.

[0010] In order to ensure that the reed switch and the permanent magnet can work together reliably, the reed switch is vertically arranged on the side wall of the cup body, and the permanent magnet is arranged at a position on the bottom of the cup cover vertically corresponding to the reed switch.

[0011] In order to ensure the stability of the reed switch, a plurality of ribs are provided on the inner side wall of the cup body and are spaced apart along the circumference of the cup body. The reed switch is arranged in at least one of the plurality of ribs.

[0012] In order to avoid interference from the permanent magnet, when the cup body is correctly matched with the base and the cup cover is correctly covering the cup body, the distance between the permanent magnet and the receiving coil is greater than the effective sensing distance of the receiving coil.

[0013] In order to facilitate the correct installation of the cup body on the base, the base is provided with a positioning protrusion, and the cup body is provided with a positioning groove adapted to the positioning protrusion. The cup body is positioned by cooperating with the positioning protrusion through the positioning groove.

[0014] In order to reliably transmit the power of the driving motor to the mixing and cutting blade assembly, the output shaft of the driving motor is connected to the mixing and cutting blade assembly via a spline coupling.

[0015] The food processor with a safe start-up protection device designed by the present invention can only close the reed switch with the permanent magnet and form a loop and generate a magnetic field by the transmitting coil when the cup body and the lid body are correctly installed in place, so that it can be detected by the receiving coil and the drive motor can be started, effectively avoiding the safety hazards brought by the mechanical locking device; at the same time, the non-contact induction method does not require a complex mechanical structure, reduces manufacturing costs and assembly difficulty, and is also easier to clean; in addition, the device is not affected by factors such as vibration and wear, and has higher reliability and longer service life; and safe locking can be achieved without the user performing additional operations, thereby improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 1 is a schematic structural diagram of a food processor with a safety start protection device provided in an embodiment of the present application;

[0017] Figure 2 This is a functional block diagram of a food processor with a safety startup protection device provided by an embodiment of the present application;

[0018] Figure 3 yes Figure 1 3D exploded view of

[0019] Figure 4 Schematic diagram of the positions of the reed switch and the permanent magnet provided in the embodiment of the present application.

[0020] Among them: base 10, drive motor 11, receiving coil 12, control circuit 13, positioning protrusion 14, cup body 20, mixing and cutting blade assembly 21, transmitting coil 22, rib 23, cup cover 30, permanent magnet 31, reed switch 40. DETAILED DESCRIPTION

[0021] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention and are not used to limit the present invention.

[0022] Example 1

[0023] like Figures 1 to 4 As shown, the food processor with a safety start protection device described in this embodiment mainly includes three parts: a base 10, a cup body 20 and a cup cover 30.

[0024] The base 10 serves as the bottom support structure of the food processor with a safety start-up protection device. It houses a drive motor 11 and a receiver coil 12. The drive motor 11 rotates the blending and chopping blades 21, thereby crushing, squeezing, and juicing ingredients. The receiver coil 12 detects the magnetic field generated by the transmitter coil 22, serving as part of the safety start-up protection device.

[0025] The cup 20 is used to hold fruits, vegetables, and other ingredients to be squeezed. It is designed to be selectively detachable from the base 10, making it easy for users to load, unload, and clean. A transmitting coil 22 is located at the bottom of the cup 20. A reed switch 40 is also mounted on the sidewall of the cup 20 and is electrically connected to the transmitting coil 22, forming the trigger portion of the protective device.

[0026] The cup cover 30 is used to close the opening of the cup body 20 to prevent the ingredients from splashing during the juicing process. It is designed to fit tightly with the cup body 20 (or be connected through a seal). A permanent magnet 31 is embedded in the bottom of the cup cover 30 to trigger the closure of the reed switch 40.

[0027] Among them, when the cup cover 30 closes the cup body 20 in a preset posture, the permanent magnet 31 causes the reed switch 40 to close, and the transmitting coil 22 generates a magnetic field through the reed switch 40; when the cup body 20 and the base 10 are matched in a preset posture, and the cup cover 30 closes the cup body 20 in a preset posture, the receiving coil 12 detects the magnetic field generated by the transmitting coil 22 to allow the drive motor 11 to start.

[0028] When implementing it specifically, Figure 2 As shown, in this embodiment, the base 10 also includes a control circuit 13, which is electrically connected to the receiving coil 12 and the drive motor 11, and the control circuit 13 is used to control the start-up of the drive motor 11 according to the magnetic field changes detected by the receiving coil 12.

[0029] During operation, for example, when a user places prepared ingredients into the cup body 20 and puts on the lid 30, if the lid 30 is properly closed, the permanent magnet 31 at its bottom will approach the reed switch 40 on the side wall of the cup body 20. The magnetic field generated by the permanent magnet 31 will cause the reed switch 40 to close, thereby generating a magnetic field in the transmitting coil 22 at the bottom of the cup body 20. Subsequently, the user places the cup body 20, with the ingredients and lid 30, on the base 10, ensuring that the position is correct. At this time, the receiving coil 12 in the base 10 will detect the magnetic field from the transmitting coil 22 of the cup body 20. It is worth noting that only when the receiving coil 12 confirms that it has detected a preset magnetic field signal, indicating that the cup body 20 and lid 30 are correctly installed, will it send a start signal to the control circuit 13, ultimately starting the drive motor 11 and driving the blending and chopping blade assembly 21 to begin the juicing process. In this embodiment, the output shaft of the drive motor 11 is connected to the blending and chopping blade assembly 21 via a spline coupling.

[0030] With this structural design, only when the cup body 20 and the cup lid 30 are properly installed can the permanent magnet 31 close the reed switch 40, allowing the transmitting coil 22 to generate a magnetic field, thereby allowing the receiving coil 12 to detect the magnetic field change and start the drive motor 11. This non-contact sensing method effectively avoids the risk of false activation due to wear and damage of the mechanical locking device, thereby ensuring user safety.

[0031] Secondly, the above structure is simpler and less expensive. Specifically, the wireless induction method does not require a complex mechanical structure. The safety lock function is achieved by simply installing a transmitting coil 22, a reed switch 40, and a permanent magnet 31 on the cup body 20 and cup lid 30, respectively, and a receiving coil 12 and control circuit 13 on the base 10. This greatly simplifies the structure of a food processor with a safety start protection device, reducing manufacturing costs and assembly difficulty. Furthermore, the wireless induction method is unaffected by factors such as vibration and wear, resulting in higher reliability and a longer service life, reducing maintenance costs.

[0032] In some embodiments, as Figure 4 As shown, the reed switch 40 is vertically arranged on the side wall of the cup body 20, and the permanent magnet 31 is arranged at a position at the bottom of the cup cover 30 that is vertically corresponding to the reed switch 40. In this embodiment, the reed switch 40 and the permanent magnet 31 are placed vertically corresponding to each other, which can ensure that when the cup cover 30 is closed, the direction of the magnetic lines of force generated by the permanent magnet 31 is consistent with the axial direction of the reed switch 40, and the magnetic field can act on the reed inside the reed switch 40 to the greatest extent, thereby enhancing the sensitivity and reliability of the magnetic field induction and ensuring that the reed switch 40 can be stably closed. In addition, the vertical placement can effectively utilize the space on the side wall of the cup body 20 and the bottom of the cup cover 30, avoid occupying the space of other components, and make the overall structure of the food processor with a safety start protection device more compact.

[0033] In some embodiments, as Figure 3 and Figure 4 As shown, the inner side wall of the cup body 20 is provided with a plurality of ribs 23 spaced apart along the circumference of the cup body 20, and the reed switch 40 is disposed within at least one of the ribs 23. In this embodiment, the provision of the ribs 23 can enhance the structural strength of the cup body 20, making it more resistant to external impacts and internal pressure, thereby improving the durability of the cup body 20. It can also change the motion state of the food in the cup body 20 as it is being blended and cut by the blending and cutting blades 21, making it easier for the food to be squeezed and cut by the blending and cutting blades 21 during blending, thereby improving the efficiency and effect of juicing. The provision of the reed switch 40 within the ribs 23 can utilize the ribs 23 to provide additional physical support and protection for the reed switch 40, making it less susceptible to external impacts or vibrations, thereby preventing displacement or damage.

[0034] In some embodiments, when the cup body 20 is properly mated to the base 10 and the cup cover 30 is properly covering the cup body 20, the distance between the permanent magnet 31 and the receiving coil 12 is greater than the effective sensing distance of the receiving coil 12. Thus, by setting a safety distance, interference with the induction of the receiving coil 12 by the magnetic field of the permanent magnet 31 can be avoided, thereby improving the accuracy of the receiving coil 12 in detecting changes in the magnetic field of the transmitting coil 22, thereby improving the reliability of the activation protection device.

[0035] In some embodiments, as Figure 3 As shown, the base 10 is provided with a positioning protrusion 14, and the cup body 20 is provided with a positioning groove (not shown) that matches the positioning protrusion 14. The cup body 20 is positioned by the positioning groove and the positioning protrusion 14. In this embodiment, the positioning protrusion 14 and the positioning groove can serve as a guide, helping the user to quickly and accurately install the cup body 20 on the base 10, avoiding installation errors or repeated attempts. At the same time, the positioning protrusion 14 and the positioning groove can ensure the precise alignment of the cup body 20 and the base 10, that is, the transmitting coil 22 at the bottom of the cup body 20 and the receiving coil 12 on the base 10 maintain an appropriate distance and position relationship, thereby ensuring the reliability of magnetic field induction.

[0036] The food processor provided in this embodiment has a safety start protection device. Only when the cup body and the cover body are correctly installed in place can the permanent magnet close the reed switch and the transmitting coil form a loop and generate a magnetic field, which is detected by the receiving coil and starts the drive motor, effectively avoiding the safety hazards brought by the mechanical locking device; at the same time, the non-contact induction method does not require a complex mechanical structure, reduces manufacturing costs and assembly difficulty, and is also easier to clean; in addition, the device is not affected by factors such as vibration and wear, and has higher reliability and longer service life; and safe locking can be achieved without the user performing additional operations, thereby improving the user experience.

[0037] In the description of the present invention, it should be noted that the terms "vertical", "up", "down", "horizontal", etc. indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0038] It should also be noted that, in the description of this utility model, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to mechanical connections or electrical connections; they may refer to direct connections or indirect connections through an intermediate medium; and they may refer to internal communication between two components. Those skilled in the art will be able to understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0039] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A food processor with a safety start protection device, comprising a base, a cup body, and a cup cover, wherein the cup body is selectively detachably connected to the base, and the cup cover is connected to the cup body to selectively close the cup body, characterized in that: The base includes a driving motor and a receiving coil; the cup body is provided with a mixing and cutting blade group that is transmission-connected to the driving motor, the bottom of the cup body is provided with a transmitting coil, and the side wall of the cup body is also provided with a reed switch electrically connected to the transmitting coil; the bottom of the cup lid is provided with a permanent magnet; wherein, when the cup lid closes the cup body in a preset posture, the permanent magnet causes the reed switch to close, and the transmitting coil generates a magnetic field through the reed switch; when the cup body and the base are matched in a preset posture, and the cup lid closes the cup body in a preset posture, the receiving coil detects the magnetic field generated by the transmitting coil to allow the driving motor to start.

2. The food processor with a safety start protection device according to claim 1, characterized in that: The base further includes a control circuit, which is electrically connected to the receiving coil and the drive motor, and is configured to control the start-up of the drive motor according to changes in the magnetic field detected by the receiving coil.

3. The food processor with a safety start protection device according to claim 1, characterized in that: The reed switch is vertically arranged on the side wall of the cup body, and the permanent magnet is arranged at a position on the bottom of the cup cover vertically corresponding to the reed switch.

4. The food processor with a safety start protection device according to claim 1 or 3, characterized in that: A plurality of convex ribs are provided on the inner side wall of the cup body and are spaced apart along the circumference of the cup body. The reed switch is arranged in at least one of the plurality of convex ribs.

5. The food processor with a safety start protection device according to claim 1, characterized in that: When the cup body is correctly matched with the base and the cup cover is correctly covered with the cup body, the distance between the permanent magnet and the receiving coil is greater than the effective induction distance of the receiving coil.

6. The food processor with a safety start protection device according to claim 1, characterized in that: The base is provided with a positioning protrusion, and the cup body is provided with a positioning groove adapted to the positioning protrusion. The cup body is positioned by cooperating with the positioning protrusion through the positioning groove.

7. The food processor with a safety start protection device according to claim 1, characterized in that: The output shaft of the driving motor is connected to the mixing and cutting blade assembly through a spline coupling.

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