WO2020108313A1

WO2020108313A1 - Food processor

Info

Publication number: WO2020108313A1
Application number: PCT/CN2019/118293
Authority: WO
Inventors: Zhongjian ZHOU; Lumeng TANG
Original assignee: Zhejiang Shaoxing Supor Domestic Electrical Appliance Co., Ltd.
Priority date: 2018-11-28
Filing date: 2019-11-14
Publication date: 2020-06-04
Also published as: CN109924903A; CN109924903B

Abstract

A food processor that allows a thorough cleaning of the mixing blade assembly (20) and is safe and reliable. The food processor comprises a main unit (200) and a mixing bowl assembly (100) removably mounted to the main unit (200). The mixing bowl assembly (100) comprises a mixing bowl (10), a mixing blade assembly (20), a fastener (30), a first locking structure (40), a second locking structure (50) provided at the bottom of the mixing bowl (10). The first locking structure (40) locks the fastener (30) so as to removably mount the mixing blade assembly (20) at the bottom of the mixing bowl (10) and to seal the bottom of the mixing bowl (10) after the mixing blade assembly (20) being mounted; the second locking structure (50) further locks the fastener (30) or the mixing blade assembly (20).

Description

Food Processor

Field of the Invention

The application relates to the domain of small home electrical appliances, and in particular, a food processor.

Background of the Invention

As people’s quality of life improves day by day, many different types of food processors appear on the market. The functions of a food processor can mainly include, but are not limited to: making soymilk, juicing, making rice paste, grinding meat, making shaved ice, making coffee, and/or preparing face masks. Food processors can include machines that break and mix food materials, such as soymilk machines, blenders or cell wall breaking food processors. The mixing blade assembly of existing food processors, especially of the cell wall breaking ones, is fixed to the mixing bowl. It can only be cleaned from the inside of the bowl by using a brush during cleaning. It is often hard to operate when the mixing bowl is deep. Meanwhile, inevitable blind spots for cleaning exist in the mixing blade assembly, which are susceptible of bacteria growth and undesirable odors.

Summary of the Invention

The objective of the application is to provide a food processor with a mixing blade assembly that is removable during cleaning, which enables a thorough cleaning, and is safe and reliable.

The application provides a food processor. The food processor comprises a main unit and a mixing bowl assembly removably mounted at the main unit. The mixing bowl assembly comprises a mixing bowl and a mixing blade assembly, a fastener, a first locking structure and a second locking structure provided at the bottom of the mixing bowl. The first locking structure locks the fastener so as to removably mount the mixing blade assembly at the bottom of the mixing bowl. The mixing blade assembly seals the bottom of the mixing bowl after being mounted. The second locking structure cooperates with the fastener or the mixing blade assembly to further lock the mixing blade assembly.

Optionally, the mixing bowl comprises a bowl body, a bowl base inside which the mixing blade assembly is provided, and a fixing frame through which the bowl base is fixed to the bottom of the bowl body.

Optionally, the second locking structure comprises a second locking element that has a first position in which it locks the fastener, and a second position in which it releases the fastener.

Optionally, the second locking element is rotatably mounted to the fixing frame or to the bowl base, and switches between the first position and the second position by rotating.

Optionally, the main unit comprises a controller and a lower coupler electrically connected with the controller. The mixing blade assembly comprises an upper coupler that cooperates with the lower coupler, and a switch electrically connected with the upper coupler. When the second locking element locks the fastener, the switch is closed so that the controller is switched to a standby state. When the second locking element releases the fastener, the switch is disconnected.

Optionally, the switch is a reed switch, and the second locking element is provided with a magnet which faces the reed switch when the second locking element locks the fastener.

Optionally, the fixing frame or the bowl base is provided with a shaft, the second locking element comprises a first part sleeved to the shaft and a second part that cooperates with the fastener in a locked manner.

Optionally, the magnet is provided at the first part of the second locking element.

Optionally, the magnet is provided at the second part of the second locking element.

Optionally, the main unit further comprises an alarm device electrically connected with the controller and is controlled by the controller to send out an alarm signal when the switch is disconnected.

Optionally, the alarm device comprises at least one of the following: a light-emitting diode, a buzzer, and a nixie tube.

Optionally, the second locking element further comprises a third part that facilitates operations and protrudes from the second part.

Optionally, the second locking structure further comprises a second elastic element that exerts an elastic force on the second locking element so that the second locking element locks the fastener.

Optionally, the first locking structure comprises a first locking element and a first elastic element for exerting an elastic force on the first locking element so that the first locking element locks the fastener.

Optionally, the fastener comprises a locking slot, and the first locking element comprises a locking part that cooperates with the locking slot in a locked manner.

Optionally, the first locking structure further comprises a mounting base fixed to the bowl base or the fixing frame, to which the first locking element is slidably mounted, and the first elastic element respectively abuts against the mounting base and the first locking element.

Optionally, the mounting base comprises a sliding slot, the first locking element comprises a sliding part that cooperates with the sliding slot.

Optionally, the bottom of the mounting base is provided with an opening, the first locking element is provided with an operating part protruding from the mounting base that cooperates with the opening.

Optionally, one end of the fastener is rotatably connected with the bowl base or the fixing frame, and another end of the fastener is removably mounted inside the bowl base through the first locking structure.

According to the invention, the mixing blade assembly is removably mounted at the bottom of the mixing bowl through the fastener. When the mixing bowl assembly has been used and needs cleaning, the mixing blade assembly is removed, facilitating operations and allowing thorough cleaning. Thus, there is no longer any blind spot of the mixing blade assembly that cannot be cleaned. Bacteria growth and undesirable odors are effectively prevented. At the same time, through the first locking structure and the second locking structure, the mixing blade assembly is double-locked at the bottom of the mixing bowl. During the use of the food processor, the mixing blade assembly is not susceptible of loosening, and is safe and reliable. And with the addition of the second locking structure, the safety risk caused by inadvertent unlocking of the first locking structure can be effectively prevented.

Description of the Drawings

Figure 1 shows an assembled view in perspective of an embodiment of the food processor of the application;

Figure 2 shows an exploded view in perspective of the mixing bowl assembly shown in Figure 1;

Figure 3 shows a schematic partial exploded view of the mixing bowl assembly shown in Figure 2;

Figure 4 shows an assembled view in perspective of the mixing bowl assembly shown in Figure 2, in which the fastener has not yet been mounted to its position;

Figure 5 shows an assembled view in perspective of the mixing bowl assembly shown in Figure 2;

Figure 6 shows an exploded view in perspective of the mixing blade assembly shown in Figure 2;

Figure 7 shows a schematic view in perspective of the first locking structure shown in Figure 2;

Figure 8 shows a schematic view in perspective of the second locking structure shown in Figure 2;

Figure 9 shows a sectional view of the mixing bowl assembly shown in Figure 2;

Figure 10 shows an enlarged view of the detail A shown in Figure 9;

Figure 11 shows a sectional view of a mixing bowl assembly of another embodiment;

Figure 12 shows an enlarged view of the detail B shown in Figure 11;

Figure 13 shows a sectional view of a mixing bowl assembly of another embodiment;

Figure 14 shows an enlarged view of the detail C shown in Figure 13;

Figure 15 shows an assembled view in perspective of a mixing bowl assembly of another embodiment; and

Figure 16 is a circuit diagram of the food processor shown in Figure 1.

Detailed Description of the Invention

Exemplary embodiments, which are illustrated in the accompanying drawings, will be described in detail here. In the description below related to figures, unless otherwise indicated, the same numbers in different figures refer to the same or similar elements. The modes of realization described in the following exemplary embodiments do not represent all modes of realization in accordance with the application. Instead, they are merely examples of devices in accordance with some aspects of the application described in detail in the appended claims.

The terms used in the application are merely for the purpose of describing specific embodiments, and not intended to be limiting. Unless otherwise defined, the technical terms or scientific terms used in the application shall be used in the ordinary meaning as understood by a person of ordinary skills in the art to which the invention belongs. The words “First, ” “second, ” and similar terms used in the description and claims of the application do not represent any order, quantity, or importance, but are used to distinguish different components. Similarly, words such as “one” or “a” do not denote a quantity limitation but mean that there is at least one. “Multiple” or “several” means two or more. Unless otherwise indicated, words such as “front, ” “back, ” “bottom, ” and/or “top” are used for convenience of description and are not limited to one location or one spatial orientation. Words such as “comprise, ” or “include” are intended to mean that the element or item before “comprise” or “include” covers the element or item listed after “comprise” or “include” and its equivalent, without excluding other elements or items. Words such as “connect” or “connected” are not limited to physical or mechanical connections, and may include electrical connections, whether direct or indirect. Singular forms, “one” and “the, ” used in the description and the appended claims of the application are also intended to include the plural form, unless the context clearly indicates otherwise. It should also be understood that the term “and/or” used herein means and includes any and all possible combinations of one or more of the associated listed items.

With reference to Figure 1, a food processor 500 comprises a main unit 200, a mixing bowl assembly 100 for the food processor (referred to below as the “mixing bowl assembly” ) , and a bowl cover assembly 300. The mixing bowl assembly 100 is removably mounted to the main unit 200. The bowl cover assembly 300 is provided to cover the mixing bowl assembly 100. The bowl cover assembly 300 comprises a bowl cover 310 and a venting cover 330 provided inside an in-cover hole of the bowl cover 310.

With reference to Figures 2 to 5, the mixing bowl assembly 100 comprises a mixing bowl 10, a mixing blade assembly 20, a fastener 30, a first locking structure 40 and a second locking structure 50. The mixing blade assembly 20, the fastener 30, the first locking structure 40 and the second fixing structure 50 are all provided at the bottom of the mixing bowl 10. The first locking structure 40 locks the fastener 30, so that the mixing blade assembly 20 is removably mounted at the bottom of the mixing bowl 10, and seals the bottom of the mixing bowl 10 after being mounted. The second locking structure 50 cooperates with the fastener 30 or with the mixing blade assembly 20 to further lock the mixing blade assembly 20. Since the mixing blade assembly 20 is removably mounted at the bottom of the mixing bowl 10, when the mixing bowl assembly 100 has been used and needs to be cleaned, the mixing blade assembly 20 can be removed, thus facilitating the operations and allowing a thorough cleaning. Thus, there is no longer any blind spot of the mixing blade assembly that cannot be cleaned. Bacteria growth and undesirable odors are effectively prevented. At the same time, through the first locking structure 40 and the second locking structure 50, the mixing blade assembly 20 is double-locked at the bottom of the mixing bowl 10. During the course of using the food processor 500, the mixing blade assembly 20 is not susceptible of loosening and is safe and reliable. And with the addition of the second locking structure, the safety risk caused by inadvertent unlocking of the first locking structure can be effectively prevented.

The mixing bowl 10 comprises a bowl body 11, a bowl base 12, and a fixing frame 13. The bowl base 12 is provided at the bottom of the bowl body 11 through the fixing frame 13. The mixing blade assembly 20 is provided inside the bowl base 12. The fixing frame 13 is ring-shaped. A bowl base sealing ring 14 is mounted at the inner side of the fixing frame 13 and located at the bottom of the bowl body 11. The mixing blade assembly 20 presses the bowl base sealing ring 14 against the bottom of the bowl body 11, so as to achieve the sealing.

With reference to Figure 6, the mixing blade assembly 20 comprises a blade base 24, a heat isolation element 25 mounted inside the blade base 24, and a blade assembly 26. The blade assembly 26 comprises a heating plate 261, a blade shaft 262 passing through the heating plate 261, a blade 263 fixed to one end of the blade shaft 262, and an upper clutch 264 provided at the other end of the blade shaft 262. The blade base 24 is provided with a blade base sealing ring 241 at its top. The periphery of the heating plate 261 is pressed against the blade base sealing ring 241. The blade base sealing ring 241 forms a seal between the heating plate 261 and the blade base 24.

The first locking structure 40 is provided at the bowl base 12 or the fixing frame 13. With reference to Figure 7, the first locking structure 40 comprises a first locking element 41 and a first elastic element 42. The first elastic element 42 is used for exerting an elastic force on the first locking element 41, so that the first locking element 41 locks the fastener 30. The first elastic element 42 comprises at least one of the following: a coil spring, an elastic rubber element, a metallic leaf spring, without being limited thereto. In the embodiment illustrated, the first elastic element 42 is a coil spring.

With reference to Figures 3 to 5 and 7, the fastener 30 comprises a locking slot 36. The first locking element 41 comprises a locking part 414 that cooperates with the locking slot 36 in a locked manner. The fastener 30 comprises a ring-shaped body part 31 and an extension part 35 that extends from one side of the body part 31. In one embodiment, the extension direction of the extension part 35 is perpendicular to the plane of the body part 31. The locking slot 36 is provided at the extension part 35. The locking part 414 is provided with a guiding face 4141. During mounting, the mixing blade assembly 20 is first placed inside the bowl base 12, and then the fastener 30 is mounted inside the bowl base 12. During the mounting of the fastener 30, the extension part 35 is pressed against the guiding face 4141 of the locking part 414. The first locking element 41 is displaced under the action of the extension part 35 and compresses the first elastic element 42, until the fastener 30 is mounted to its position. Thereafter, the first locking element 41 returns to its initial position under the elastic force of the first elastic element 42. There the locking part 414 cooperates with the locking slot 36 of the extension part 35 in a locked manner, so as to removably mount the mixing blade assembly 20 inside the bowl base 20.

The first locking structure 40 further comprises a fixing base 43 fixed at the bowl base 12 or the fixing frame 13. The first locking element 41 is slidably mounted at the fixing base 43. The first elastic element 42 abuts, respectively, against the fixing base 43 and the first locking element 41.

In the illustrated embodiment, the fixing base 43 can be mounted to the bowl base 12 or the fixing frame 13 by means of a fastening element such as a screw. In another embodiment, the fixing base 43 can be integrally formed with the bowl base 12 or the fixing frame 13. The fixing base 43 is provided with a cavity 433 that traverses its front end face. The first locking element 41 is mounted and fitted with the cavity 433, and protrudes from the front end face of the fixing base 43. The first elastic element 42 is located inside the cavity 433 with its one end pressed against an end wall of the cavity 433 and its other end pressed against the first locking element 41.

The fixing base 43 comprises a sliding slot 432. The first locking element 41 comprises a sliding part 411 that cooperates with the sliding slot 432. The sliding part 411 slides inside the sliding slot 432, so that the first locking structure 40 can switch between a first operating state and a second operating state. The sliding slot 432 is concavely formed from a side wall of the cavity 433. Correspondingly, the sliding part 411 is formed to protrude outward the side wall of the locking element 41. Thus, the position of the locking element 41 is limited in the up-down direction, so that the locking element 41 is only able to slide along the front-back direction of the mounting base 43.

The mounting base 43 has an opening 435 at its bottom. The first locking element 41 has an operating part 415 that extends out of the opening 435. The operating part 415 protrudes from the mounting base 43. A user can operate the first locking element 41 by means of the operating part 415.

Still with reference to Figures 3 and 5, one end of the fastener 30 is rotatably connected with the bowl base 12 or the fixing frame 13, and its other end is removably mounted inside the bowl base 12 through the first locking structure 40. With reference to Figure 2, the bowl base 12 or the fixing frame 13 is provided with a fixing base 38. The fixing base 38 is provided with a pin 37. One end of the fastener 30 is rotatably provided at the pin 37. The pin 37 is further sleeved by a torsion spring 39 of which one end is pressed against the fixing frame 13 or the bowl base 12, and the other end is pressed against the fastener 30, so as to provide a force to the fastener 30 for turning it outwards. When the locked state of the fastener 30 maintained by the first locking structure 40 and the second locking structure 50 is released, the fastener 30 turns a certain angle under the elastic force of the torsion spring 39, so as to facilitate the remove of the mixing blade assembly 20.

The second locking structure 50 is provided at the bowl base 12 or the fixing frame 13. With reference to Figures 8 to 12, the second locking structure 50 comprises a second locking element 51 that has a first position in which the second locking element 51 cooperates with the fastener 30 to lock the mixing blade assembly 20, and a second position in which the second locking element 51 is disengaged with the fastener 30 or the mixing blade assembly 20. In some embodiments, the second locking element 51 switches between the first position and the second position by rotation. In other embodiments, the second locking element 51 switches between the first position and the second position by displacement.

With reference to Figures 2 to 12, the second locking element 51 is rotatably mounted at the fixing frame 13 or the bowl base 12. The second locking element 51 switches between the first position and the second position by rotation.

With reference to Figure 14, the main unit 200 comprises a controller 61 and a lower coupler (not illustrated) electrically connected with the controller 61. The controller 61 comprises a single-chip microprocessor, without being limited thereto. The mixing blade assembly 20 further comprises an upper coupler 21 that is connected with the lower coupler, and a switch 22 electrically connected with the upper coupler 21. The upper coupler 21 is mounted to the blade base 24 through a fastening element such as a screw. The switch 22 is mounted to the blade base 24 through a fastening element such as a screw. The switch 22 is located close to the side wall of the blade base 24, and at the same time, close to the second locking element 51.

The switch 22 is electrically connected with the controller 61. When the second locking element 51 locks the fastener 30, the switch 22 is connected, switching the controller 61 to a standby state. When the second locking element 51 releases the fastener 30, the switch 22 is disconnected. Thus, when the second locking element 51 does not lock the fastener 30, the controller 61 cannot be switched to a standby state, and thus the main unit 200 cannot start functioning and is safe and reliable.

In the embodiment illustrated, the switch 22 is a reed switch, and the second locking element 51 is provided with a magnet 514. When the second locking element 51 locks the fastener 30, the magnet 514 approaches the reed switch, and faces the reed switch. The reed switch is connected under the action of the magnetic field of the magnet 514, thus turned on. When the second locking element 51 releases the fastener 30, the magnet 514 moves away from the reed switch. The reed switch is disconnected since it is not subject to the magnetic field of the magnet 514, thus turned off.

In another embodiment, the switch 22 is a micro switch. When it locks the fastener 30, the second locking element 51 is pressed against the micro switch, so that the micro switch is connected and turned on. When it releases the fastener 30, the second locking element 51 is separated from the micro switch, so that the micro switch is disconnected and turned off.

The fixing frame 13 or the bowl base 12 is provided with a shaft 131. The second locking element 51 is provided with a shaft hole 517 that cooperates with the shaft 131. The second locking element 51 is rotatably provided at the shaft 131. An end of the shaft 131 is provided with a position limiting element (not illustrated) , so as to limit the second locking element 51 on the shaft 131. The position limiting element includes a position limiting screw, without being limited thereto.

The second locking element 51 comprises a first part 511 that is sleeved to the shaft 131 and a second part 512 that cooperates with the fastener 30. When the second locking element 51 is in the first position, the second part 512 is pressed against the bottom end of the fastener 30, thus locking the fastener 30. When the second locking element 51 is in the second position, the second part 512 is located outside the fastener 30, thus releasing the fastener 30.

The second locking element 51 further comprises a third part 513 that facilitates operations. The third part 513 protrudes from the second part 512. A user rotates the second locking element 51 by holding the third part 513, so that the second locking element 51 switches between the first position and the second position, facilitating operations.

With reference to Figures 9 and 10, the magnet 514 is provided at the first part 511. When the second locking element 51 locks the fastener 30, the magnet 514 faces the reed switch.

With reference to Figures 11 and 12, the magnet 514 is provided at the second part 512. Preferably, the magnet 514 is provided on the upper surface of the second part 512, without being limited thereto.

With reference to Figures 13 and 14, the second locking element 51 has a first position in which the second locking element 51 cooperates with the mixing blade assembly 20 to lock the mixing blade assembly 20, and a second position in which the second locking element 51 is separated from the mixing blade assembly 20. In the illustrated embodiment, a stepped part 244 is formed by a recess provided at one side of the bottom face of the blade base 24. The second part 512 of the second locking element 51 is pressed against the stepped part 244, so that the mixing blade assembly 20 is locked. Moreover, since the stepped part 244 is formed by the recess provided at the bottom face of the blade base 24, the second locking element 51 will not protrude from the bottom face of the blade base 24, and the design is more esthetic. In another embodiment, the second part 512 of the second locking element 51 can also be pressed directly against the bottom face of the blade base 24. There can be a certain gap between the second part 512 of the second locking element 51 and the fastener 30. Alternatively, the second part 512 of the second locking element 51 can be pressed against both of the fastener 30 and the blade base 24.

With reference to Figure 16, the main unit 200 further comprises an alarm device 62 electrically connected with the controller 61. When the switch 22 is disconnected thus turned off, the controller 61 controls the alarm device 62 to send out an alarm signal, alerting a user that the second locking element 51 has not yet locked the fastener 30.

The alarm device 62 includes at least one of the following: an LED (light emitting diode) , a buzzer, and a nixie tube, without being limited thereto. In one embodiment, the alarm device 62 comprises an LED. When the second locking element 51 has not yet locked the fastener 30, the LED is lighted or blinks. In another embodiment, the alarm device 62 comprises a buzzer. When the second locking element 51 has not yet locked the fastener 30, the buzzer emits an alarm sound. In another embodiment, the alarm device 62 comprises a nixie tube. When the second locking element 51 has not yet locked the fastener 30, the nixie tube displays an error code. In other embodiments, the alarm device 62 comprises any two of an LED, a buzzer, and a nixie tube.

In the illustrated embodiment, the alarm device 62 comprises an LED, a buzzer 66, and a nixie tube 67. The alarm device 62 further comprises a first transistor Q1 connected with the LED, and a second transistor Q2 connected with the buzzer 66. In some embodiments, the first transistor Q1 is a NPN-type transistor, and the second transistor Q2 is a NPN-type transistor. The positive pole of LED is connected with a voltage source VCC. The collector of the first transistor Q1 is connected with the negative pole of the LED, its emitter is grounded, and its base is connected with an I/O port of the controller 61. One end of the buzzer is connected with the voltage source VCC. The collector of the second transistor Q2 is connected with the other end of the buzzer, its emitter is grounded, and its base is connected with an I/O port of the controller 61.

When the switch 22 is disconnected, the I/O interface of the controller 61 that is connected with the LED outputs a high voltage. The first transistor Q1 is connected, and the LED is lighted, alerting the user that the second locking element 51 has not yet locked the fastener 30. When the switch 22 is connected, the I/O interface of the controller 61 that is connected with the LED outputs a low voltage. The first transistor Q1 is cut off, and the LED is not lighted, indicating that the second locking element 51 has locked the fastener 30.Similarly, when the switch 22 is connected, the I/O interface of the controller 61 that is connected the buzzer 66 outputs a high voltage. The second transistor Q2 is connected, and the buzzer 66 emits a sound. When the switch 22 is disconnected, the I/O interface of the controller 61 that is connected with the buzzer 66 outputs a low voltage. The second transistor Q2 is cut off, and the buzzer 66 does not emit a sound.

In another embodiment, when the switch 22 is disconnected, the I/O interface of the controller 61 that is connected with the LED outputs a high voltage pulse and a low voltage pulse at intervals, so that the first transistor Q1 is connected and cut off at intervals, thus controlling the LED to blink.

In the illustrated embodiment, the mixing blade assembly 20 further comprises a temperature measuring element NTC that is connected in series with the switch 22. The temperature measuring element NTC is used for detecting the temperature inside the mixing bowl 10. When the mixing blade assembly 100 is mounted at the main unit 200, the lower coupler and the upper coupler 21 are connected, so that the switch 22 and the temperature measuring element NTC are electrically connected with the controller 61. The controller 61 receives signals of the switch 22 as being connected or disconnected, and signals of temperature detected by the temperature measuring element NTC.

The main unit 200 comprises a motor 63 that is electrically connected with the controller 61. A photocoupler 64 and a bidirectional thyristor BCR are connected between the motor 63 and an I/O port of the controller 61. One terminal of the motor 63 is connected with a neutral wire N, and its other terminal is connected to a live wire L through the bidirectional thyristor BCR. The controller 61 controls the connection time of the bidirectional thyristor BCR by controlling the photocoupler 64, thus controlling the rotation speed of the electrical motor 63.

When the second locking element 51 locks the fastener 30, the switch 22 is connected, so that the controller 61 is switched to a standby state. At this moment, a user triggers a button SW1. The controller 61 receives a trigger signal of triggering the button SW1 and produces a control signal to control the photocoupler 64 to be connected, thus causing the bidirectional thyristor BCR to be connected, starting the electrical motor 63.

With reference to Figure 15, the second locking structure 50 comprises a second locking element 51 and a second elastic element (not illustrated) . The second elastic element exerts an elastic force on the second locking element 51, so that the second locking element 51 locks the fastener 30. The second elastic element comprises at least one of the following: a coil spring, an elastic rubber element, and a metallic leaf spring, without being limited thereto. The second elastic element is provided between the second locking element 51 and the bowl base 12 or the fastener 30. The second locking element 51 comprises a second locking part 519 for locking the fastener 30. The second locking part 519 is provided with a second guiding face 518 at an end so as to facilitate the mounting of the fastener 30.

What have been described above are merely preferred embodiments of the invention, and not for the purpose of limiting the invention. Any modification, equivalent replacement or improvement made within the spirit and principles of the invention falls within the scope of protection of the application.

Claims

A food processor, characterized in that, it comprises:

- a main unit (200) ; and

- a mixing bowl assembly (100) removably mounted to the main unit (100) and comprising a mixing bowl (10) and a mixing blade assembly (20) , a fastener (30) , a first locking structure (40) and a second locking structure (50) provided at the bottom of the mixing bowl (10) ; the first locking structure (40) locks the fastener (30) so as to removably mount the mixing blade assembly (20) at the bottom of the mixing bowl (10) and to seal the bottom of the mixing bowl (10) after the mixing blade assembly being mounted; the second locking structure (50) cooperates with the fastener (30) or the mixing blade assembly (20) to further lock the mixing blade assembly (20) .
The food processor according to claim 1, characterized in that, the second locking structure (50) comprises a second locking element (51) having a first position in which the second locking element (51) cooperates with the fastener (30) to lock the mixing blade assembly (20) , and a second position in which the second locking element (51) is disengaged with the fastener (30) .
The food processor according to claim 1, characterized in that, the second locking structure (50) comprises a second locking element (51) having a first position in which the second locking element (51) cooperates with the mixing blade assembly (20) to lock the mixing blade assembly (20) , and a second position in which the second locking element (51) is disengaged with the mixing blade assembly (20) .
The food processor according to anyone of claims 1 to 3, characterized in that, the mixing bowl (10) comprises a bowl body (11) , a bowl base (12) inside which the mixing blade assembly (20) is provided, and a fixing frame (13) through which the bowl base (12) is fixed to the bottom of the bowl body (11) .
The food processor according to claim 2 or 3, characterized in that, the mixing bowl (10) comprises a bowl body (11) , a bowl base (12) inside which the mixing blade assembly (20) is provided, and a fixing frame (13) through which the bowl base (12) is fixed to the bottom of the bowl body (11) , and in that the second locking element (51) is rotatably mounted to the fixing frame (13) or the bowl base (12) , and switches between the first position and the second position by rotating.
The food processor according to claim 5, characterized in that, the fixing frame (13) or the bowl base (12) is provided with a shaft (131) , and the second locking element (51) comprises a first part (511) sleeved to the shaft (131) and a second part (512) that cooperates with the fastener (30) in a locked manner.
The food processor according to claim 6, characterized in that, the second locking element (51) further comprises a third part (513) that facilitates operations and protrudes from the second part (512)
The food processor according to claim 5, characterized in that, the main unit (200) comprises a controller and a lower coupler electrically connected with the controller, and the mixing blade assembly (20) comprises an upper coupler (21) that cooperates with the lower coupler, and a switch (22) electrically connected with the upper coupler (21) ;

when the second locking element (51) locks the fastener (30) , the switch (22) is connected to switch the controller to a standby state; when the second locking element (51) releases the fastener (30) , the switch (22) is disconnected.
The food processor according to claim 8, characterized in that, the switch (22) is a reed switch, and the second locking element (51) is provided with a magnet (514) which faces the reed switch when the second locking element (51) locks the fastener (30) .
The food processor according to claim 9, characterized in that, the fixing frame (13) or the bowl base (12) is provided with a shaft (131) , and the second locking element (51) comprises a first part (511) sleeved to the shaft (131) and a second part (512) that cooperates with the fastener (30) in a locked manner, and in that the magnet (514) is provided at the first part (511) .
The food processor according to claim 9, characterized in that, the fixing frame (13) or the bowl base (12) is provided with a shaft (131) , and the second locking element (51) comprises a first part (511) sleeved to the shaft (131) and a second part (512) that cooperates with the fastener (30) in a locked manner, and in that the magnet (514) is provided at the second part (512) .
The food processor according to claim 8, characterized in that, the main unit (200) further comprises an alarm device electrically connected with the controller and is controlled by the controller (61) to send out an alarm signal when the switch (22) is disconnected.
The food processor according to claim 12, characterized in that, the alarm device comprises at least one of the following: a light emitting diode, a buzzer, and a nixie tube.
The food processor according to claim 2 or 3, characterized in that, the second locking structure (50) further comprises a second elastic element that exerts an elastic force on the second locking element (51) so that the second locking element (51) locks the fastener (30) .
The food processor according to claim 4, characterized in that, the first locking structure (40) comprises a first locking element (41) and a first elastic element (42) for exerting an elastic force on the first locking element (41) so that the first locking element (41) locks the fastener (30) .
The food processor according to claim 15, characterized in that, the fastener (30) comprises a locking slot (36) , and the first locking element (41) comprises a locking part (414) that cooperates with the locking slot (36) in a locked manner.
The food processor according to claim 15, characterized in that, the first locking structure (40) further comprises a mounting base (43) fixed to the bowl base (12) or the fixing frame (13) , to which the first locking element (41) is slidably mounted, and the first elastic element (42) respectively abuts against the mounting base (43) and the first locking element (41) .
The food processor according to claim 17, characterized in that, the mounting base (43) comprises a sliding slot (432) , the first locking element (41) comprises a sliding part (411) that cooperates with the sliding slot (432) .
The food processor according to claim 17, characterized in that, the bottom of the mounting base (43) is provided with an opening (435) , the first locking element (41) is provided with an operating part (415) protruding from the mounting base (43) that cooperates with the opening (435) .
The food processor according to claim 4, characterized in that, one end of the fastener (30) is rotatably connected with the bowl base (12) or the fixing frame (13) , and another end of the fastener (30) is removably mounted inside the bowl base (12) through the first locking structure (40) .