Food processor having safety startup protection device

Abstract

The present utility model relates to a food processor having a safety startup protection device. The food processor comprises a base, a cup body and a cup lid, wherein the cup body can be selectively and detachably adapted to the base, and the cup lid is adapted to the cup body so as to selectively close the cup body. In the food processor having a safety startup protection device designed in the present utility model, only when both the cup body and a cover body are correctly mounted in place can a permanent magnet cause a reed switch to close, and a transmitting coil can thus form a circuit and generate a magnetic field, which is thus detected by a receiving coil to start a drive motor, thereby effectively preventing potential safety hazards caused by a mechanical locking device. Moreover, a non-contact sensing method requires no complex mechanical structure, thereby reducing manufacturing costs and assembly difficulty, and also making cleaning easier. Furthermore, the device is not affected by factors such as vibration and wear, and thus has higher reliability and a longer service life. In addition, safety locking can be implemented without requiring a user to perform additional operations, thereby improving user experience.

Description

A food processor with a safety start protection device Technical Field

[0001] This utility model relates to the field of kitchen utensils technology, and in particular to a food processor with a safety start protection device. Background Technology

[0002] A food processor, a common household appliance, primarily functions to extract juice from fruits, vegetables, and other ingredients, providing a convenient way for people to obtain nutrients. A traditional food processor typically consists of a base with a drive motor, a container for holding the ingredients, and a lid to seal the opening of the container.

[0003] However, if the food processor is not properly installed or the lid is not fully closed before starting the motor, it may cause food to splatter, blades to spin unnecessarily, or even personal injury.

[0004] To address this issue, existing technologies typically incorporate additional mechanical components, such as latches or linkages, into the food processor to create a start-up protection device. These mechanical structures connect the cup and lid to the start-up circuit of the drive motor, forming a closed loop that activates the drive motor only when both the cup and lid are correctly installed.

[0005] However, this mechanically based start-up protection device has many shortcomings: First, its structure is relatively complex, which increases manufacturing costs and assembly difficulty. Second, the food processor will generate 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, making it easy for bacteria to grow, which is not conducive to food hygiene.

[0006] Therefore, while ensuring safety, further improvements are needed to simplify the start-up protection device of the food processor, enhance its reliability, make it easy to clean, and improve the user experience and product quality. Utility Model Content

[0007] To address the aforementioned issues, this invention provides a food processor with a safety start protection device that enables the drive motor to be activated only when both the cup and lid are correctly installed, effectively avoiding the safety hazards associated with mechanical locking devices.

[0008] To achieve the above objectives, this utility model designs a food processor with a safety start-up protection device, comprising a base, a cup body, and a lid. The cup body is selectively detachable from the base, and the lid is fitted to the cup body to selectively close the cup body. The base includes a drive motor and a receiving coil. The cup body contains a blade assembly that is driven and coupled to the drive motor. A transmitting coil is located at the bottom of the cup body, and a reed switch electrically connected to the transmitting coil is located on the side wall of the cup body. A permanent magnet is located at the bottom of the lid. When the lid closes the cup body in a preset posture, the permanent magnet causes the reed switch to close, and the reed switch generates a magnetic field in the transmitting coil. When the cup body is fitted to the base in a preset posture, and the lid closes the cup body in a preset posture, the receiving coil detects the magnetic field generated by the transmitting coil, allowing the drive motor to start.

[0009] To achieve precise control of the drive motor, the base also includes a control circuit, which is electrically connected to the receiving coil and the drive motor, and is used to control the start of the drive motor according to the magnetic field change detected by the receiving coil.

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

[0011] To ensure the stability of the reed switch, the inner wall of the cup body is provided with a plurality of raised ribs spaced apart along the circumference of the cup body, and the reed switch is disposed in at least one of the plurality of raised ribs.

[0012] To avoid interference from the permanent magnet, when the cup body is correctly matched with the base and the cup lid is correctly closed on the cup body, the distance between the permanent magnet and the receiving coil is greater than the effective induction distance of the receiving coil.

[0013] To facilitate proper installation of the cup body onto the base, the base is provided with a positioning protrusion, and the cup body is provided with a positioning groove that matches the positioning protrusion. The cup body is positioned by engaging with the positioning protrusion through the positioning groove.

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

[0015] The food processor with a safety start protection device designed in this utility model can only close the reed switch with the permanent magnet when the cup and lid are correctly installed. This allows the transmitting coil to form a circuit and generate a magnetic field, which is then detected by the receiving coil and starts the drive motor, effectively avoiding the safety hazards of mechanical locking devices. At the same time, the non-contact sensing method eliminates the need for complex mechanical structures, reducing manufacturing costs and assembly difficulty, and making it easier to clean. In addition, the device is unaffected by vibration, wear, and other factors, resulting in higher reliability and a longer service life. Furthermore, the safety locking can be achieved without any additional user intervention, enhancing the user experience. Attached Figure Description

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

[0017] Figure 2 is a functional block diagram of a food processor with a safety start protection device provided in an embodiment of this application;

[0018] Figure 3 is an exploded three-dimensional view of Figure 1;

[0019] Figure 4 is a schematic diagram showing the positions of the reed switch and the permanent magnet provided in the embodiments of this application.

[0020] The components include: base 10, drive motor 11, receiving coil 12, control circuit 13, positioning protrusion 14, cup body 20, stirring and cutting blade assembly 21, transmitting coil 22, rib 23, cup lid 30, permanent magnet 31, and reed switch 40. Detailed Implementation

[0021] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention. Example 1

[0022] As shown in Figures 1 to 4, 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 lid 30.

[0023] The base 10 serves as the bottom support structure for the food processor with a safety start-up protection device, and houses a drive motor 11 and a receiving coil 12. The drive motor 11 drives the blade assembly 21 to rotate, thereby enabling the crushing, squeezing, and juicing of ingredients. The receiving coil 12 detects the magnetic field generated by the transmitting coil 22, serving as part of the start-up protection device.

[0024] The cup body 20 is used to hold the fruits, vegetables, and other ingredients to be juiced. It is designed to be selectively detachable from the base 10 for easy loading, unloading, and cleaning by the user. A transmitting coil 22 is provided at the bottom of the cup body 20, and a reed switch 40 is also installed on the side wall of the cup body 20. It is electrically connected to the transmitting coil 22 and forms the trigger part of the activation protection device.

[0025] The lid 30 is used to seal the opening of the cup body 20 to prevent food from splashing during juicing. It is designed to fit tightly with the cup body 20 (or to be connected via a seal). At the bottom of the lid 30, a permanent magnet 31 is embedded to trigger the closing of the reed switch 40.

[0026] When the cup lid 30 closes the cup body 20 in a preset posture, the permanent magnet 31 causes the reed switch 40 to close, and the reed switch 40 causes the transmitting coil 22 to generate a magnetic field; when the cup body 20 and the base 10 are mated in a preset posture, and the cup lid 30 closes the cup body 20 in a preset posture, the receiving coil 12 detects the magnetic field generated by the transmitting coil 22, so as to allow the drive motor 11 to start.

[0027] In a specific implementation, as shown in Figure 2, in this embodiment, the base 10 further 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 of the drive motor 11 according to the magnetic field change detected by the receiving coil 12.

[0028] During operation, for example: when the user places the prepared ingredients into the cup body 20 and closes the lid 30, if the lid 30 is correctly 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, filled with ingredients and with the lid 30 closed, onto the base 10, ensuring the correct position. 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 representing that the cup body 20 and the 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 mixing blade assembly 21 to begin the juicing process. In this embodiment, the output shaft of the drive motor 11 is connected to the mixing blade assembly 21 via a spline coupling.

[0029] Using the above structural design, the permanent magnet 31 can only close the reed switch 40 when both the cup body 20 and the cup lid 30 are correctly installed, allowing the transmitting coil 22 to generate a magnetic field. This, in turn, enables the receiving coil 12 to detect the change in magnetic field and activate the drive motor 11. This non-contact sensing method effectively avoids the risk of accidental activation caused by wear or damage to mechanical locking devices, thus ensuring user safety.

[0030] Secondly, the aforementioned structure is simpler and less expensive. The wireless sensing method eliminates the need for complex mechanical structures; a transmitting coil 22, a reed switch 40, and a permanent magnet 31 are simply placed on the cup body 20 and lid 30, respectively, while a receiving coil 12 and a control circuit 13 are placed on the base 10 to achieve the safety locking function. This significantly simplifies the structure of a food processor with a safety start protection device, reducing manufacturing costs and assembly difficulty. Furthermore, the wireless sensing method is unaffected by vibration, wear, or other factors, resulting in higher reliability and a longer service life, thus reducing maintenance costs.

[0031] In some embodiments, as shown in FIG. 4, the reed switch 40 is vertically disposed on the side wall of the cup body 20, and the permanent magnet 31 is disposed at the bottom of the cup lid 30 at a position corresponding vertically to the reed switch 40. In this embodiment, placing the reed switch 40 and the permanent magnet 31 vertically correspondingly ensures that when the cup lid 30 is closed, the direction of the magnetic field lines generated by the permanent magnet 31 is consistent with the axis of the reed switch 40. The magnetic field can act on the reed inside the reed switch 40 to the maximum extent, enhancing the sensitivity and reliability of magnetic field induction and ensuring that the reed switch 40 can be stably closed. In addition, vertical placement can effectively utilize the space of the side wall of the cup body 20 and the bottom of the cup lid 30, avoiding the occupation of space for other components, making the overall structure of the food processor with a safety start protection device more compact.

[0032] In some embodiments, as shown in Figures 3 and 4, the inner wall of the cup body 20 is provided with a plurality of raised ribs 23 spaced apart circumferentially along the cup body 20, and the reed switch 40 is disposed within at least one of the raised ribs 23. In this embodiment, the raised ribs 23 can enhance the structural strength of the cup body 20, making it more resistant to external impacts and internal pressures, improving the durability of the cup body 20. They can also change the movement state of the food inside the cup body 20 as it is agitated and cut by the agitator assembly 21, making the food easier to squeeze and cut by the agitator assembly 21 during the agitation process, thus improving the juicing efficiency and effect. By placing the reed switch 40 within the raised ribs 23, the raised ribs 23 can provide additional physical support and protection for the reed switch 40, making it less susceptible to external impacts or vibrations, and preventing displacement or damage.

[0033] In some embodiments, when the cup body 20 is correctly mated with the base 10 and the cup lid 30 correctly covers 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 safe distance, interference from the magnetic field of the permanent magnet 31 on the sensing of the receiving coil 12 can be avoided, thereby improving the detection accuracy of the receiving coil 12 on changes in the magnetic field of the transmitting coil 22, and thus improving the reliability of the activation protection device.

[0034] In some embodiments, as shown in FIG3, 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 engaging with the positioning protrusion 14 through the positioning groove. In this embodiment, the positioning protrusion 14 and the positioning groove can play a guiding role, helping the user to quickly and accurately install the cup body 20 onto 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, so that the transmitting coil 22 at the bottom of the cup body 20 and the receiving coil 12 on the base 10 maintain a suitable distance and positional relationship, ensuring the reliability of magnetic field induction.

[0035] The food processor with a safety start protection device provided in this embodiment can only close the reed switch with the permanent magnet when the cup and lid are correctly installed. This allows the transmitting coil to form a circuit and generate a magnetic field, which is then detected by the receiving coil and starts the drive motor, effectively avoiding the safety hazards of mechanical locking devices. At the same time, the non-contact sensing method eliminates the need for complex mechanical structures, reducing manufacturing costs and assembly difficulty, and making it easier to clean. In addition, the device is unaffected by vibration, wear, and other factors, resulting in higher reliability and a longer service life. Furthermore, safety locking can be achieved without additional user intervention, enhancing the user experience.

[0036] In the description of this utility model, it should be noted that the terms "vertical", "up", "down", "horizontal", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0037] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0038] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A food processor with a safety start protection device, comprising a base, a cup body, and a lid, wherein the cup body is selectively detachable from the base, and the lid is engaged with the cup body to selectively close the cup body, characterized in that, The base includes a drive motor and a receiving coil; the cup body is provided with a stirring and cutting blade assembly that is driven and coupled to the drive motor; a transmitting coil is provided at the bottom of the cup body; a reed switch electrically connected to the transmitting coil is also provided on the side wall of the cup body; a permanent magnet is provided at the bottom of the cup lid; 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 coupled 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, thereby allowing the drive motor to start.

2. The food processor with a safety start protection device according to claim 1, characterized in that, The base also includes a control circuit, which is electrically connected to the receiving coil and the drive motor, and is used to control the start of the drive motor according to the magnetic field change 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 mounted on the side wall of the cup body, and the permanent magnet is mounted on the bottom of the cup lid at a position corresponding vertically to the reed switch.

4. The food processor with a safety start protection device according to claim 1 or 3, characterized in that, The inner wall of the cup body is provided with a plurality of raised ribs spaced apart along the circumference of the cup body, and the reed switch is disposed in at least one of the plurality of raised 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 lid is correctly closed on the cup body, the distance between the permanent magnet and the receiving coil is greater than the effective sensing 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 that matches the positioning protrusion. The cup body is positioned by engaging 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 drive motor is connected to the agitator assembly via a spline coupling.

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