Locking device and multifunctional food processor

Abstract

The invention discloses a locking device and a multifunctional food processer, the locking device is applied to the multifunctional food processer, the multifunctional food processer comprises a machine body and a machine head movably arranged on the machine body, the locking device is used for locking the machine head on the machine body at different angles, and the locking device comprises a fixing part, a locking part and a locking part, the fixing piece is arranged on the machine head, and a plurality of first grooves are formed in the fixing piece; the support is arranged on the machine body, a mounting cavity is formed between the support and the fixing part, and a limiting cavity communicated with the mounting cavity is formed in the support. The multifunctional food processor is simple in structure, the machine head can be locked on the machine body at different angles through cooperation of the multiple first grooves in the fixing piece and the protruding strips on the buckles, the requirement of a user for adjusting the angle of the machine head in different use scenes is met, and the use flexibility of the multifunctional food processor is improved.

Description

Technical Field

[0001] The present application relates to the technical field of household appliances, and in particular to a locking device and a multifunctional food processor. Background Art

[0002] Currently, multi-function food processors are highly sought after in the kitchen appliance market due to their ability to integrate multiple functions, such as blending, juicing, and grinding. To meet users' diverse operating perspectives and usage requirements, designs with adjustable heads are becoming increasingly popular. However, existing food processor head locking mechanisms often have numerous shortcomings. Some locking mechanisms only provide simple fixation of the head and fail to achieve precise adjustment at multiple angles, making it difficult for users to find the right operating angle during use. Other locking mechanisms are complex to operate, with cumbersome unlocking and locking processes that impact the user experience. Furthermore, some locking mechanisms lack stability, making it easy for the head to loosen or shift during operation, which not only affects the cooking effect but also poses certain safety risks.

[0003] For example, the Chinese utility model patent application number 202421513057.7 discloses a food processor whose release button requires three spring devices to achieve head-up locking. The force direction is up and down, and the structure is complex; the locking structure is linear locking, the force is not strong, and it is easy to be damaged. Summary of the Invention

[0004] The present invention aims to provide a locking device for use on a multifunctional food processor, wherein the multifunctional food processor comprises a main body and a head movably mounted on the main body, wherein the locking device is used to lock the head on the main body at different angles, and the locking device comprises:

[0005] A fixing member, which is provided on the machine head, and the fixing member is provided with a plurality of first grooves;

[0006] a bracket, which is arranged on the body and forms a mounting cavity with the fixing member, and the bracket is provided with a limiting cavity communicating with the mounting cavity;

[0007] A buckle, comprising a clamping portion and a limiting portion protruding from the clamping portion, wherein the clamping portion is disposed in the mounting cavity and is provided with a plurality of ridges, and the limiting portion is disposed in the limiting cavity and has a through groove on its top surface, so that when the buckle moves in a horizontal direction, the ridges can be clamped into the corresponding first grooves;

[0008] a button movably disposed on the body, wherein the lower end of the button can be moved downwardly in the vertical direction into the limiting cavity and engage with the through groove, so that the buckle moves away from the fixing member to separate the protrusion from the first groove;

[0009] A reset member is provided in the limiting cavity and is used to reset the buckle and the button when the force applied to the button is released, so that the convex strip is engaged with the first groove to lock the machine head on the machine body.

[0010] The present application has the functions of multi-angle locking, convenient unlocking and automatic reset locking. By cooperating with the multiple first grooves on the fixing member and the ridges on the buckle, the machine head can be locked to the machine body at different angles, meeting the user's needs for adjusting the angle of the machine head in different usage scenarios and improving the flexibility of the multi-function food processor. In addition, after the lower end of the button is engaged with the through groove, the buckle can be pushed to move the ridges to separate from the first grooves to achieve unlocking. The operation is simple, and the user can easily adjust the angle of the machine head. After the force applied to the button is released, the reset member can reset the buckle and the button, allowing the ridges to re-engage with the first grooves, ensuring the stability of the machine head locking and preventing accidental movement of the machine head during use.

[0011] As an optional embodiment, the fixing member is an annular structure, which includes a first end face and a second end face arranged opposite to each other along its axial direction, the first end face is close to the machine head, and a plurality of the first grooves are opened on the second end face, and the angles between any two adjacent first grooves are equal.

[0012] The angle adjustment of this application is uniform and precise. When the handpiece is rotated to adjust the angle, the angle intervals of each locking position are even, allowing users to more accurately control the angle of the handpiece, improving the user experience. In addition, the ring structure has good structural strength and stability, which can withstand the forces when the handpiece is locked at different angles, ensuring the reliability of the locking device.

[0013] As an optional embodiment, the clamping portion is a plate-like structure, one side of the plate-like structure is concave toward the other side to form a depression, and the convex strips are respectively provided at the corners of the plate-like structure, and the convex strips are inclined relative to the outer peripheral surface of the plate-like structure.

[0014] The convex strips of the present application are arranged at the corners of the plate-like structure and are inclined relative to the outer peripheral surface, so that the contact area between the convex strips and the first grooves is larger when they are clamped together, the clamping is more firm, and loosening caused by factors such as vibration is reduced.

[0015] As an optional embodiment, a connecting portion connected to the outer wall of the machine head is provided on the inner periphery of the fixing member, and an avoidance groove for avoiding the connecting portion is provided on one side plate surface of the plate-like structure.

[0016] The connection portion on the inner periphery of the fixing member of the present invention is connected to the outer wall of the machine head. The avoidance groove on the surface of the clamping portion allows the connection portion to be avoided, ensuring that the clamping portion is not obstructed by the connection portion during movement, ensuring the normal operation of the locking device. In addition, the provision of the avoidance groove allows for more precise positioning of the connection portion and the clamping portion, improving the accuracy and reliability of the overall assembly of the multi-function food processor.

[0017] As an optional embodiment, the bracket includes a first rod portion, a second rod portion, a rod body and an annular shell, the first rod portion is provided on the side of the shell away from the buckle, the middle part of the first rod portion is provided with a through first notch, the first rod portion is provided with the second rod portion perpendicular to it, the second rod portion is provided with a through second notch, the side of the first rod portion is provided with the rod body, the interior of the rod body forms the limiting cavity, the rod body is provided with a third notch communicating with the limiting cavity, and the first notch, the second notch and the third notch are communicated.

[0018] The bracket structure of this application is stable and can be securely mounted on the body, supporting components such as the fixing member and the buckle, ensuring the overall stability of the locking device. Furthermore, the bracket has a continuous movable space, providing a smooth movement channel for components such as the button trigger and the buckle limiter, allowing each component to flexibly move vertically and horizontally, ensuring smooth operation of the locking device.

[0019] As an optional embodiment, the limiting portion is a rod-shaped structure with a square cross-section, the rod body is a shell structure with a square cross-section, and the limiting portion matches the shape of the limiting cavity.

[0020] The present invention features a precise guide mechanism for horizontal movement within the retaining cavity, preventing deviation and ensuring accurate engagement and disengagement between the protruding strip and the first groove. Furthermore, the square-cross-section rod-shaped retaining portion tightly fits within the square housing structure, minimizing component shake and enhancing the stability and reliability of the locking mechanism.

[0021] As an optional embodiment, a plurality of second grooves are provided on the inner periphery of the shell, the included angles between any two adjacent second grooves are equal, and the end of the protrusion away from the first groove is always engaged with the second groove.

[0022] The end of the ridge, away from the first groove, is permanently engaged with the second groove on the inner periphery of the housing. Combined with the stopper and the stopper cavity, this creates a dual-engagement structure, further enhancing the stability of the buckle in the locked state, preventing accidental movement and ensuring a secure lock on the handpiece. This dual-engagement structure disperses force, reduces pressure on a single engagement point, and improves the lifespan and reliability of the locking device.

[0023] As an optional embodiment, the button includes a pressing portion and a rod-shaped triggering portion connected to the pressing portion, and the triggering portion is disposed in the second notch;

[0024] The groove wall surface of the through groove opened on the limiting part includes a first inclined surface, and the lower end of the trigger part has a second inclined surface. When the trigger part moves downward in the vertical direction, it is inserted into the through groove of the limiting part located in the limiting cavity through the third notch, and the contact between the second inclined surface and the first inclined surface forces the limiting part to move in a direction away from the fixing part, so that the protrusion is separated from the first groove.

[0025] The unlocking action of the present application is efficient. The second inclined surface of the trigger part contacts the first inclined surface of the through groove. The force of the inclined surface forces the limit part to move. By utilizing the principle of mechanics, the vertical movement of the button can be efficiently converted into the horizontal movement of the buckle, thereby realizing the separation of the convex strip and the first groove. The unlocking action is quick and labor-saving.

[0026] The purpose of the embodiment of the present application is also to provide a multi-functional food processor, including a body and a head movably arranged on the body, and also including the aforementioned locking device.

[0027] The multifunctional food processor of this application can be locked at multiple angles to meet the requirements of different cooking operations for the head position, expanding the use of the food processor. The various components of the locking device are structurally designed. When assembled with the body and head, they ensure the stability and reliability of the multifunctional food processor during use and reduce the probability of malfunction.

[0028] As an optional embodiment, the multi-function food processor also includes a power output device provided in the machine head, the power output device includes a first power output head and a second power output head with different output speeds, the first power output head is clamped to a first cooking accessory, and the second power output head is clamped to a second cooking accessory, and the function of the first cooking accessory is different from that of the second cooking accessory.

[0029] This application enables a multifunctional food processor to complete a variety of cooking tasks, truly achieving "multi-function" and meeting the diverse cooking needs of users. Different power output speeds and cooking accessory functions can be adapted to different ingredients and cooking techniques.

[0030] The beneficial effects of the embodiments of the present application are:

[0031] The present invention has a simple structure. By cooperating with the multiple first grooves on the fixing member and the ridges on the buckle, the handpiece can be locked to the machine body at different angles, meeting the user's need to adjust the handpiece angle in different usage scenarios and improving the flexibility of the multi-function food processor. In addition, the annular distribution of the clip connection ensures that the handpiece is evenly stressed in the locked state, capable of withstanding large external forces, ensuring that the handpiece remains firmly at the set angle during operation, and is not prone to loosening or displacement, thereby improving the safety and reliability of the multi-function food processor.

[0032] The simple operation method of this application allows users to easily unlock and lock the handpiece, improving ease of use. After the lower end of the button engages with the through-groove, the buckle can be pushed to move, separating the ridge from the first groove to unlock the handpiece. The operation is simple, and the user can easily adjust the angle of the handpiece. After the button force is released, the reset member can reset the buckle and button, allowing the ridge to re-engage with the first groove, ensuring the stability of the handpiece lock and preventing accidental movement of the handpiece during use.

[0033] This application switches between multiple working modes by locking at different angles, reducing the user's need for multiple single-function cooking devices, enabling a multi-functional food processor to undertake multiple cooking tasks, improving the versatility and practicality of the equipment, saving kitchen space, and bringing higher cost-effectiveness to users. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 An exploded view of a locking device according to an embodiment of the present application;

[0035] Figure 2 This is a partial cross-sectional view of the locking device in the locked state according to the embodiment of the present application. Figure 1 ;

[0036] Figure 3 This is a partial cross-sectional view of the locking device in the unlocked state according to the embodiment of the present application. Figure 1 ;

[0037] Figure 4 This is a partial cross-sectional view of the locking device in the unlocked state according to the embodiment of the present application. Figure 2 ;

[0038] Figure 5 This is a partial cross-sectional view of the locking device in the locked state according to the embodiment of the present application. Figure 2 ;

[0039] Figure 6 This is a schematic diagram of the structure of the button, bracket and buckle connection in an embodiment of the present application;

[0040] Figure 7 This is a schematic structural diagram of a fixing member according to an embodiment of the present application;

[0041] Figure 8 This is a schematic structural diagram of a bracket according to an embodiment of the present application;

[0042] Figure 9 This is a schematic diagram of the buckle structure of the embodiment of the present application Figure 1 ;

[0043] Figure 10 This is a schematic diagram of the buckle structure of the embodiment of the present application Figure 2 ;

[0044] Figure 11 This is a schematic diagram of the structure of the button in the embodiment of the present application;

[0045] Figure 12 This is a cross-sectional view of the head of the multi-function food processor according to an embodiment of the present application in a 0° use state;

[0046] Figure 13 This is a cross-sectional view of the head of the multi-function food processor according to an embodiment of the present application in a 90° use state;

[0047] Figure 14 This is a cross-sectional view of the head of the multi-function food processor according to an embodiment of the present application in a 180° use state;

[0048] Figure 15 This is a cross-sectional view of the power output device of the multi-function food processor according to an embodiment of the present application.

[0049] in,

[0050] 1. Fixing member; 11. First groove; 12. Connecting portion; 2. Bracket; 21. Shell; 22. First rod portion; 23. Second rod portion; 24. Rod body; 25. Second groove; 3. Buckle; 31. Snap-fitting portion; 311. Raised strip; 312. Avoidance groove; 32. Limiting portion; 321. Through groove; 3211. First inclined surface; 4. Button; 41. Pressing portion; 42. Triggering portion; 421. Second inclined surface; 5. Resetting member; 6. Body; 7. Machine head; 8. Power output device; 81. First power output head; 82. Second power output head; 91. First cooking accessory; 92. Second cooking accessory. DETAILED DESCRIPTION

[0051] Various aspects and features of the present application are described herein with reference to the accompanying drawings.

[0052] It should be understood that various modifications may be made to the embodiments of the present application. Therefore, the above description should not be considered as limiting, but merely as an example of an embodiment. Other modifications within the scope and spirit of the present application will occur to those skilled in the art.

[0053] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the present application and, together with the general description of the present application given above and the detailed description of the embodiments given below, serve to explain the principles of the present application.

[0054] These and other characteristics of the present application will become apparent from the following description of a preferred form of embodiment given as a non-limiting example with reference to the accompanying drawings.

[0055] It should also be understood that although the present application has been described with reference to certain specific examples, those skilled in the art will readily be able to implement many other equivalent forms of the present application.

[0056] The above and other aspects, features and advantages of the present application will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings.

[0057] Specific embodiments of the present application will be described hereinafter with reference to the accompanying drawings; however, it should be understood that the embodiments described are merely examples of the present application and may be implemented in a variety of ways. Familiar and / or repetitive functions and structures are not described in detail to avoid obscuring the present application with unnecessary or redundant details. Therefore, the specific structural and functional details described herein are not intended to be limiting, but rather serve merely as a basis and representative basis for the claims to teach those skilled in the art to variously utilize the present application with substantially any suitable detailed structure.

[0058] This specification may use the phrases "in one embodiment," "in another embodiment," "in yet another embodiment," or "in other embodiments," which may all refer to one or more of the same or different embodiments according to the present application.

[0059] A locking device according to an embodiment of the present application, such as Figures 1-6 As shown, it is applied to a multifunctional food processor, which includes a body 6 and a head 7 movably arranged on the body 6. The locking device is used to lock the head 7 on the body 6 at different angles to ensure that the position of the head 7 is stable when the food processor is working.

[0060] like Figures 1-12 As shown, the locking device includes a fixing member 1, a bracket 2, a buckle 3, a button 4 and a reset member 5.

[0061] The fixing member 1 is mounted on the handpiece 7 and is provided with a plurality of first grooves 11. The fixing member 1 is a component mounted on the handpiece 7 and, with the plurality of first grooves 11, is a key component for achieving angular locking of the handpiece 7, cooperating with the buckle 3 to complete the locking action. The first grooves 11 are concave structures on the fixing member 1, distributed in an array, and are used to engage with the protrusions 311 of the buckle 3.

[0062] The bracket 2 is mounted on the body 6 and forms a mounting cavity with the fixing member 1. The bracket 2 is provided with a limiting cavity that communicates with the mounting cavity. The mounting cavity is the space enclosed between the fixing member 1 and the bracket 2, and is used to accommodate the engaging portion 31 of the clip 3, ensuring that the engaging portion 31 can move freely horizontally therein. The limiting cavity is a cavity structure on the bracket 2 that communicates with the mounting cavity and is used to limit the range of movement of the limiting portion 32 of the clip 3, ensuring that the clip 3 moves in a predetermined direction and trajectory.

[0063] The clip 3 includes a snap-on portion 31 and a limiting portion 32 protruding from the snap-on portion 31. The snap-on portion 31 is disposed within the mounting cavity and is provided with a plurality of ridges 311. The limiting portion 32 is disposed within the limiting cavity and has a through-groove 321 formed on its top surface. When the clip 3 moves horizontally, the ridges 311 can snap into the corresponding first grooves 11. The clip 3 is a core transmission component, comprising the snap-on portion 31 and the limiting portion 32. The handpiece 7 is locked and unlocked by engaging or disengaging the ridges 311 of the snap-on portion 31 with the first grooves 11 of the fixing member 1.

[0064] The button 4 is movably mounted on the body 6. The lower end of the button 4 can be moved vertically downward into the limiting cavity and engage with the through slot 321, causing the buckle 3 to move away from the fixing member 1 to separate the protruding strip 311 from the first groove 11. The button 4 is an operating component. The user unlocks the handpiece 7 by pressing the button 4. The lower end of the button 4 can be inserted into the limiting cavity and engage with the through slot 321, pushing the buckle 3 to move.

[0065] The reset member 5 is disposed in the limiting cavity and is used to reset the buckle 3 and the button 4 when the force applied to the button 4 is released, so that the protrusion 311 engages with the first groove 11 to lock the head 7 on the body 6. The reset member 5 is generally an elastic element such as a spring.

[0066] In this embodiment, in the initial locking state, the protrusion 311 of the buckle 3 is locked in the first groove 11 of the fixing member 1. At this time, the head 7 is locked at a specific angle on the fuselage 6, and the reset member 5 is in a natural state or has a certain pre-tightening force to maintain the locking position of the buckle 3.

[0067] When the user presses the button 4 on the body 6, the lower end of the button 4 moves vertically downward, inserts into the limiting cavity, and engages with the through-groove 321 on the top surface of the limiting portion 32. As the button 4 continues to be pressed downward, the through-groove 321 pushes the limiting portion 32, causing the buckle 3 to move horizontally away from the fixing member 1 until the protrusion 311 separates from the first groove 11. At this time, the head 7 is unlocked and can rotate freely.

[0068] After the head 7 is unlocked, the user rotates the head 7 to a desired angle, such as 0°, 90° or 180°, according to actual usage needs. During this process, the protrusion 311 of the buckle 3 will be aligned with the first groove 11 at different positions.

[0069] After the adjustment is completed, the user releases the button 4, and the reset member 5 provided in the limit cavity works to push the buckle 3 and the button 4 to reset. During the reset process of the buckle 3, the protrusion 311 will be re-engaged in the first groove 11, thereby locking the head 7 at the new angle, completing one angle adjustment and locking operation.

[0070] The multiple first grooves 11 on the fixing part 1 of the present application cooperate with the protrusion 311 of the buckle 3 to achieve precise locking in different directions such as 0°, 90°, 180°, etc., to meet the requirements of the head 7 angle for various cooking functions such as mincing meat, squeezing noodles, and food processing, and improve the applicability of the multi-function food processor.

[0071] The handpiece 7 can be unlocked by simply pressing the button 4, and the lock will be automatically reset when the button 4 is released. The operation steps are simple and clear, and there is no need for complicated operation procedures, which lowers the user's usage threshold and improves usage efficiency.

[0072] In one embodiment, if Figure 7 As shown, the fixing member 1 is an annular structure, which includes a first end face and a second end face arranged opposite to each other along its axial direction. The first end face is close to the machine head 7, and a plurality of first grooves 11 are provided on the second end face. The angles between any two adjacent first grooves 11 are equal.

[0073] In this embodiment, the fixing member 1 is in an annular shape as a whole. This structure can evenly distribute the force and ensure stability when mated with the buckle 3 .

[0074] The first end surface is the plane of the fixing member 1 that is closest to the machine head 7. It is one of the parts where the fixing member 1 connects or cooperates with the machine head 7, and provides positioning and support. The second end surface is opposite to the first end surface and is the plane of the fixing member 1 that is away from the machine head 7. It is distributed with multiple first grooves 11 and is the key working surface for achieving the angle locking of the machine head 7.

[0075] The first grooves 11 are concave structures provided on the second end surface and are distributed in an array, and are used to engage with the convex strips 311 on the buckle 3 to achieve locking of the machine head 7 at different angles.

[0076] When the angle of the head 7 of the multifunctional food processor needs to be adjusted, the user first presses the button 4 to separate the ridge 311 of the buckle 3 from the first groove 11 at the current position of the fixing member 1, and the head 7 is unlocked. During the rotation of the head 7, the fixing member 1 rotates accordingly. Since the angles of adjacent first grooves 11 are equal, the ridge 311 of the buckle 3 will pass through the first grooves 11 at different positions in sequence. When the head 7 is rotated to the target angle (such as 0°, 90°, 180°), the button 4 is released, and the reset member 5 pushes the buckle 3 to reset. At this time, the ridge 311 of the buckle 3 is just stuck in the first groove 11 at the corresponding angle position. By utilizing the structural characteristics of the fixing member 1, the head 7 is locked at the new angle with uniform force.

[0077] The angle adjustment of the present application is precise and uniform. The design of the equal angles between the two adjacent first grooves 11 makes the angle change precise and evenly spaced when the head 7 switches between directions such as 0°, 90°, and 180°, ensuring the strict requirements of different cooking functions on the angle of the head 7 and improving the consistency and stability of the cooking effect.

[0078] When the annular fixing member 1 engages with the buckle 3 to lock the machine head 7, the force is evenly distributed around the central axis. Compared to non-annular structures, this can better withstand the vibration and torque generated by the food processor during operation, reduce the risk of loosening due to localized excessive force, and enhance the reliability and durability of the locking device. This is similar to the annular hub of a wheel, which can more stably support the weight of the vehicle body and the impact forces during driving.

[0079] In one embodiment, if Figure 9 and Figure 10 As shown, the clamping portion 31 is a plate-like structure, one side of the plate-like structure is concave toward the other side to form a depression, and the corners of the plate-like structure are respectively provided with the protrusions 311, and the protrusions 311 are inclined relative to the outer peripheral surface of the plate-like structure.

[0080] In this embodiment, the engaging portion 31 moves horizontally within the mounting cavity, and the engagement of the ridges 311 with the grooves enables the locking and unlocking of the handpiece 7. The engaging portion 31 is generally flat, with a certain thickness and area, providing a mounting base for the ridges 311 and other structures, while also providing stable support and guidance within the mounting cavity.

[0081] The recess is a concave area formed by the plate surface of one side of the plate-like structure being concave toward the other side, and its function is to avoid interference with other components, and at the same time may reduce the weight of the clamping portion 31.

[0082] The convex strip 311 is a raised strip structure arranged at the corner of the plate-like structure, which is adapted to the shape of the first groove 11 of the fixing member 1. The inclined design makes it easier to fit in and out of the groove, thereby achieving angle locking of the machine head 7.

[0083] When the handpiece 7 of the multifunctional food processor is locked, the protrusion 311 of the engaging portion 31 engages with the first groove 11 of the fixing member 1, securing the handpiece 7. The user presses the button 4, and the lower end of the button 4 engages with the through groove 321 of the limiting portion 32 of the buckle 3, pushing the buckle 3 as a whole to move horizontally away from the fixing member 1. At this time, the engaging portion 31 slides within the mounting cavity, and the protrusion 311 gradually separates from the first groove 11, unlocking the handpiece 7.

[0084] Rotate the handpiece 7. When the handpiece 7 reaches the target angle (such as 0°, 90°, 180°), release the button 4. The reset member 5 pushes the buckle 3 to reset. The protrusion 311 of the clamping portion 31 is locked into the corresponding first groove 11, locking the handpiece 7 again.

[0085] The recessed design on the plate-like structure of the present application reserves space for components such as the connecting portion 12 of the fixing member 1, thereby avoiding interference during the movement of the buckle 3, making the assembly of the components smoother, improving production and assembly efficiency, and reducing the probability of assembly errors.

[0086] The plate-shaped clamping portion 31 has a certain strength and stability, and can withstand the vibration and external force generated when the food processor is working. The ridges 311 at the corners are evenly distributed, and the force is balanced when cooperating with the fixing part 1, thereby enhancing the stability of the entire locking device and ensuring that the head 7 is locked reliably.

[0087] In one embodiment, if Figure 1 and Figure 10 As shown, a connecting portion 12 connected to the outer wall of the machine head 7 is provided on the inner periphery of the fixing member 1, and an avoidance groove 312 for avoiding the connecting portion 12 is provided on one side plate surface of the plate-like structure.

[0088] In this embodiment, the connecting portion 12 is a structural component that securely connects the fixing member 1 to the outer wall of the machine head 7. It can take various forms, such as a flange, a bolt hole, a clip 3 slot, etc. The avoidance groove 312 is a groove-like structure provided on one side of the plate-like structure (the clip 31). Its shape and position are compatible with the connecting portion 12. The purpose is to reserve space for the connecting portion 12 to prevent interference between the two during the movement of the clip 3, thereby ensuring the normal operation of all components of the locking device.

[0089] During assembly, the fixing member 1 is connected to the outer wall of the machine head 7 via the connecting portion 12, for example, by using bolts passed through the bolt holes of the connecting portion 12 to tighten the fixing member 1 to the machine head 7. When the food processor is in normal use and the machine head 7 is in the locked state, the ridge 311 of the clamping portion 31 engages with the first groove 11 of the fixing member 1, keeping the machine head 7 stable.

[0090] When the user presses the button 4 to unlock the head 7, the buckle 3 drives the clamping part 31 to move horizontally away from the fixing part 1. At this time, the avoidance groove 312 on the plate structure just avoids the connecting part 12 on the inner periphery of the fixing part 1, avoiding the collision between the two and hindering the movement of the buckle 3.

[0091] After the machine head 7 is rotated and adjusted to a new angle (such as 0°, 90°, 180°), release the button 4, and the reset member 5 pushes the buckle 3 to reset, and the protrusion 311 of the clamping part 31 is re-engaged in the first groove 11 of the corresponding angle. During this process, the avoidance groove 312 always leaves space for the connecting part 12 to ensure that the buckle 3 is smoothly reset and the machine head 7 is re-locked.

[0092] The setting of the avoidance groove 312 of the present application effectively avoids the interference of the clamping part 31 with the connecting part 12 of the fixing part 1 during the movement, ensures that the buckle 3 can move smoothly according to the predetermined trajectory, realizes the smooth unlocking, rotation and locking of the machine head 7, ensures that the locking device works stably and reliably, avoids problems such as jamming and damage caused by interference between components, and improves the stability of the multi-function food processor.

[0093] In one embodiment, if Figure 6 and Figure 8 As shown, the bracket 2 includes a first rod portion 22, a second rod portion 23, a rod body 24 and an annular shell 21, the first rod portion 22 is provided on the side of the shell 21 away from the buckle 3, the middle part of the first rod portion 22 is provided with a through first notch, the first rod portion 22 is provided with a second rod portion 23 perpendicular to it, the second rod portion 23 is provided with a through second notch, the side of the first rod portion 22 is provided with the rod body 24, the interior of the rod body 24 forms the limiting cavity, the rod body 24 is provided with a third notch communicating with the limiting cavity, and the first notch, the second notch and the third notch are communicated.

[0094] In this embodiment, the bracket 2 serves as a supporting component of the locking device and is installed on the body 6 of the multi-function food processor. It cooperates with the fixing part 1 to form an installation cavity, providing installation space and movement guide for components such as the buckle 3 and the button 4, ensuring stable operation of each component.

[0095] The annular housing 21 is connected to the first rod portion 22 , the second rod portion 23 and the rod body 24 to form a stable supporting structure, and at the same time forms a mounting cavity with the fixing member 1 .

[0096] The first rod portion 22 is one of the main components of the bracket 2 and is arranged on a side of the housing 21 away from the buckle 3 to play a connecting and supporting role. The first notch in the middle provides space for the movement of the limiting portion 32.

[0097] The second rod portion 23 is vertically arranged on the top surface of the first rod portion 22, and cooperates with the first rod portion 22 to enhance the structural strength of the bracket 2. At the same time, the second notch thereon provides a moving path for the trigger portion 42 of the button 4, etc., guiding the component to move along a predetermined trajectory.

[0098] The rod body 24 is a structure arranged on the side of the first rod portion 22, and a limiting cavity is formed inside to provide a movable space for the limiting portion 32 of the buckle 3, and cooperates with the trigger portion 42 of the button 4 through the third notch to realize the movement control of the buckle 3.

[0099] The limiting cavity is a cavity inside the rod body 24 , and its shape and size are adapted to the limiting portion 32 of the buckle 3 , guiding and limiting the movement of the limiting portion 32 , thereby ensuring the accuracy of the horizontal movement of the buckle 3 .

[0100] The third notch is a notch on the rod body 24 that communicates with the limiting cavity. It is a channel for the triggering portion 42 of the button 4 to engage with the limiting portion 32. Through this notch, the button 4 can push the limiting portion 32, thereby driving the buckle 3 to move.

[0101] When the multifunctional food processor is in the locked state, the engaging portion 31 of the buckle 3 is located in the mounting cavity, the limiting portion 32 is in the limiting cavity, the convex strip 311 is engaged with the first groove 11 of the fixing member 1, and the machine head 7 is firmly locked.

[0102] When the user needs to adjust the angle of the handpiece 7, they press the button 4 on the body 6. The trigger portion 42 of the button 4 passes through the second notch and then through the third notch to insert into the through groove 321 of the limiting portion 32 in the limiting cavity. Due to the cooperation between the second inclined surface 421 and the first inclined surface 3211, the trigger portion 42 moves downward, pushing the limiting portion 32 to move horizontally away from the fixing member 1, driving the engaging portion 31 to move together, causing the protrusion 311 to separate from the first groove 11, and the handpiece 7 to be unlocked.

[0103] After the user rotates the head 7 to the target angle (such as 0°, 90°, 180°), he releases the button 4. The reset member 5 provided in the limit cavity pushes the buckle 3 and the button 4 to reset, and the protrusion 311 of the buckle 3 is re-engaged in the corresponding first groove 11, thereby locking the head 7 at the new angle.

[0104] During this process, the rods, notches and cavities of the bracket 2 work together to provide accurate guidance and stable support for the movement of the buckle 3 and the button 4.

[0105] The bracket 2 of the present application is a stable frame structure that can be firmly mounted on the body 6, providing reliable support for other components of the locking device, effectively withstanding the vibration and external force generated when the food processor is working, ensuring that the locking state of the head 7 is stable, and avoiding problems such as loosening of the head 7 due to instability of the bracket 2.

[0106] By setting the first notch, the second notch and the third notch, and the shape adaptation of the limiting cavity and the limiting portion 32, precise guidance and limitation are provided for the movement of the button 4 and the buckle 3, ensuring that the trigger portion 42 of the button 4 can accurately engage with the limiting portion 32 and push the buckle 3 to move, so that the buckle 3 moves according to the predetermined trajectory, realizing reliable unlocking and locking of the machine head 7, and improving the working accuracy and reliability of the locking device.

[0107] In one embodiment, if Figure 8 and Figure 9 As shown, the limiting portion 32 is a rod-shaped structure with a square cross section, the rod body 24 is a shell 21 structure with a square cross section, and the limiting portion 32 matches the shape of the limiting cavity.

[0108] In this embodiment, the cross section of the limiting portion 32 is a square rod-shaped structure, which ensures that it can only move along a specific direction in the limiting cavity, prevents deviation, and ensures the stability and accuracy of the movement of the buckle 3.

[0109] The rod body 24 forms a limiting cavity within itself, providing space for the limiting portion 32 to move. This cavity, in conjunction with other components (e.g., the button 4 and the engaging portion 31 of the buckle 3), guides and controls the movement of the buckle 3. The housing 21, with its square cross-section, matches the shape of the limiting portion 32, further enhancing the constraint on its movement.

[0110] The square rod-shaped structure of the limiting portion 32 and the square shell 21 structure of the limiting cavity inside the rod body 24 are adapted to each other in shape and size, and an appropriate gap is left between the two, which can not only ensure that the limiting portion 32 can move freely in the limiting cavity, but also limit its moving direction to prevent deviation or shaking.

[0111] When the head 7 of the multi-function food processor is in a locked state, the limiting portion 32 of the buckle 3 is located in the limiting cavity of the rod body 24. Since the limiting portion 32 matches the shape of the limiting cavity, the limiting portion 32 remains stably in the limiting cavity. At this time, the convex strip 311 of the clamping portion 31 is clamped into the first groove 11 of the fixing part 1, firmly locking the head 7.

[0112] When the user needs to adjust the angle of the handpiece 7, they press the button 4 on the body 6. The trigger portion 42 of the button 4 passes through the second and third notches of the bracket 2 and is inserted into the through slot 321 of the stopper 32. Because the stopper 32 matches the shape of the stopper cavity and can only move horizontally, when the trigger portion 42 pushes the stopper 32, the stopper 32 moves horizontally within the stopper cavity, away from the fixing member 1. This in turn drives the engaging portion 31 to move, causing the protrusion 311 to separate from the first groove 11, thereby unlocking the handpiece 7.

[0113] After the user rotates the handpiece 7 to the target angle (e.g., 0°, 90°, 180°), they release the button 4. The reset member 5 within the limiting cavity pushes the buckle 3 and button 4 back into position. Due to the shape constraints of the limiting portion 32 and the limiting cavity, the limiting portion 32 accurately returns to its initial position, allowing the ridge 311 to reengage the corresponding first groove 11, thus locking the handpiece 7 at the new angle. Throughout the entire process, the movement of the limiting portion 32 remains stable and precise.

[0114] The design of the limiting portion 32 of the present application that matches the shape of the limiting cavity effectively limits the displacement and rotation of the limiting portion 32 during movement, so that it can only move accurately in the horizontal direction, ensuring that the protrusion 311 of the buckle 3 can accurately snap into or out of the first groove 11 of the fixing part 1, thereby achieving precise adjustment and reliable locking of the angle of the machine head 7, and improving the working accuracy of the locking device.

[0115] In one embodiment, if Figure 6 and Figure 8 As shown, a plurality of second grooves 25 are provided on the inner periphery of the shell 21 , and the included angles between any two adjacent second grooves 25 are equal. The end of the protrusion 311 away from the first groove 11 is always engaged with the second groove 25 .

[0116] In this embodiment, the second groove 25 is a concave structure provided on the inner periphery of the shell 21 , and there are multiple of them. They cooperate with the ridges 311 of the buckle 3 to play an auxiliary supporting role and enhance the stability of the buckle 3 when in use.

[0117] The protrusion 311 on the buckle 3 has two ends, one end is engaged with the first groove 11 of the fixing member 1, and the other end is engaged with the second groove 25 on the inner periphery of the housing 21, forming a double engaging structure.

[0118] When the head 7 of the multi-function food processor is in a locked state, one end of the protrusion 311 of the buckle 3 is snapped into the first groove 11 of the fixing member 1, and the other end is snapped into the second groove 25 of the shell 21, forming a double snap connection, which firmly locks the head 7 at a specific angle on the body 6.

[0119] When the user presses the button 4 to unlock, the button 4 pushes the buckle 3 to move horizontally away from the fixing member 1, the protrusion 311 gradually separates from the first groove 11, and the head 7 is unlocked, but at this time the other end of the protrusion 311 is still engaged with the second groove 25.

[0120] The handpiece 7 is rotated to adjust the angle. When the handpiece 7 reaches the target angle (such as 0°, 90°, or 180°), the button 4 is released, and the reset member 5 pushes the buckle 3 to reset. At this time, during the reset process, one end of the protrusion 311 re-engages the first groove 11 of the corresponding angle, and the other end moves horizontally along the second groove 25. Since the adjacent second grooves 25 have equal angles, the handpiece 7 is ensured to be stably double-locked at the new angle.

[0121] The two ends of the convex strip 311 of the present application are respectively engaged with the first groove 11 and the second groove 25 to form a double locking structure. Compared with a single engaging method, it can withstand greater external force and vibration, effectively preventing the buckle 3 from accidentally moving during the operation of the food processor, ensuring that the head 7 always remains at the set angle, and improving the safety and stability of the multi-function food processor.

[0122] Moreover, the double clamping disperses the stress on the buckle 3, reduces the wear of the single clamping portion 31, and extends the service life of the locking device; at the same time, the evenly distributed second grooves 25 make the buckle 3 evenly stressed during movement, reducing the risk of component damage and reducing maintenance and replacement costs.

[0123] In one embodiment, if Figure 11 As shown, the button 4 includes a pressing portion 41 and a rod-shaped triggering portion 42 connected to the pressing portion 41, and the triggering portion 42 is provided in the second notch;

[0124] The groove wall surface of the through groove 321 opened on the limiting portion 32 includes a first inclined surface 3211, and the lower end of the trigger portion 42 has a second inclined surface 421. When the trigger portion 42 moves downward in the vertical direction, it is inserted into the through groove 321 of the limiting portion 32 located in the limiting cavity through the third notch, and the contact between the second inclined surface 421 and the first inclined surface 3211 forces the limiting portion 32 to move away from the fixing member 1, so that the protrusion 311 is separated from the first groove 11.

[0125] In this embodiment, the user unlocks the head 7 by operating the button 4, which is a key component of human-computer interaction.

[0126] The pressing portion 41 is the top area of ​​the button 4, directly contacting the user's finger and receiving the pressing force applied by the user. The trigger portion 42 is a rod-shaped structure connected to the pressing portion 41 and is the core transmission part that realizes the unlocking function of the button 4. It is located in the second notch of the bracket 2 and cooperates with the through-slot 321 of the limiter 32 to push the limiter 32 to move.

[0127] The second notch is a through notch provided in the second rod portion 23 , and provides a movement channel for the trigger portion 42 , guiding the trigger portion 42 to move to the limiting cavity along a predetermined trajectory.

[0128] The through slot 321 is a slot-shaped structure provided on the top surface of the limiting portion 32 , and is used for engaging with the trigger portion 42 , and driving the limiting portion 32 to move under the action of the trigger portion 42 .

[0129] The first inclined surface 3211 is an inclined surface provided on the wall of the through-groove 321. It cooperates with the second inclined surface 421 at the lower end of the trigger portion 42 to convert the vertical pressing force of the trigger portion 42 into a horizontal thrust force on the stop portion 32. The second inclined surface 421 is an inclined surface provided at the lower end of the trigger portion 42. It contacts and cooperates with the first inclined surface 3211 to push the stop portion 32 to move when the button 4 is pressed.

[0130] When the machine head 7 of the multifunctional food processor is in the locked state, the protrusion 311 of the buckle 3 is engaged with the first groove 11 of the fixing member 1, and the other end is engaged with the second groove 25 of the housing 21. At this time, the trigger portion 42 of the button 4 is located in the second notch of the bracket 2 and does not act on the through groove 321 of the limiting portion 32.

[0131] When the user needs to adjust the angle of the handpiece 7, the user presses the pressing portion 41 of the button 4 with his finger, and the pressing portion 41 drives the trigger portion 42 to move downward in the vertical direction. The trigger portion 42 passes through the second notch and the third notch in sequence and is inserted into the through groove 321 of the limiting portion 32 in the limiting cavity.

[0132] As the trigger portion 42 continues to press downward, the second inclined surface 421 at its lower end contacts the first inclined surface 3211 of the through-groove 321. Due to the mechanical principles of the inclined surfaces, the vertical pressing force of the trigger portion 42 is converted into a horizontal thrust that pushes the limit portion 32 away from the fixing member 1. Under the action of this thrust, the limit portion 32 drives the engaging portion 31 to move horizontally, gradually separating the protrusion 311 from the first groove 11 and the second groove 25, and the handpiece 7 is unlocked.

[0133] After the user rotates the handpiece 7 to a target angle (e.g., 0°, 90°, 180°), he releases the force on the pressing portion 41 of the button 4, and the reset member 5 disposed in the limiting cavity starts to work, pushing the buckle 3 and the button 4 to reset. The trigger portion 42 withdraws from the through groove 321 and returns to its initial position in the second notch. The protrusion 311 of the buckle 3 reengages the first groove 11 and the second groove 25 of the corresponding angle, completing the locking of the handpiece 7 at the new angle.

[0134] This application cleverly converts the vertical force of the user pressing the button 4 into a horizontal force that pushes the limit part 32 through the cooperation of the first inclined surface 3211 and the second inclined surface 421, greatly reducing the operating force required for unlocking, so that the user only needs to lightly press the button 4 to easily unlock the machine head 7. The operation process is labor-saving and efficient, and the user experience is improved.

[0135] Through the precise coordination of the trigger portion 42, the second notch, the third notch, the through groove 321 and the inclined surface, it is ensured that when the button 4 is pressed, the trigger portion 42 can be accurately inserted into the through groove 321 and push the limit portion 32 to move, avoiding unlocking failure or jamming, ensuring the reliability and stability of the locking device, and reducing failures caused by operational errors.

[0136] In summary, the multifunctional food processor is in standby mode, with the machine head 7 secured to the machine body 6 at an initial angle (e.g., 0°) via a locking device. At this point, the engaging portion 31 of the clip 3 is located within the mounting cavity formed by the fixing member 1 and the bracket 2. The protrusions 311 at the corners of the engaging portion 31 engage with the corresponding first grooves 11 on the fixing member 1. The end of the protrusion 311, away from the first groove 11, simultaneously engages with the second groove 25 of the housing 21 of the bracket 2, forming a double engagement that ensures the stable locking of the machine head 7. The limiting portion 32 is located within the limiting cavity of the rod 24 of the bracket 2. The trigger portion 42 of the button 4 is located within the second notch of the bracket 2, and the through-groove 321 of the limiting portion 32 is not acting. The reset member 5 is in a natural or pre-tightened state.

[0137] When the user needs to adjust the machine head 7 to other angles (such as 90° or 180°) to perform different cooking operations, the angle adjustment is completed first.

[0138] For example, when adjusting to 90°, the user presses button 4 on body 6 with their finger. The force applied to pressing portion 41 of button 4 drives the connected trigger portion 42 downward in the vertical direction. Trigger portion 42 then passes through the second notch of second rod portion 23 and then through the third notch of rod body 24, inserting into slot 321 of stop portion 32 within the stop cavity.

[0139] Because the through-groove 321 on the upper portion of the limiting portion 32 has a first inclined surface 3211 on its wall, and the trigger portion 42 has a second inclined surface 421 at its lower end, when the trigger portion 42 is inserted into the through-groove 321 and pressed downward, the second inclined surface 421 contacts the first inclined surface 3211. Based on the principle of inclined plane mechanics, the vertical pressing force of the trigger portion 42 is converted into a horizontal thrust that pushes the limiting portion 32 away from the fixing member 1. This thrust drives the clamping portion 31 to move horizontally within the mounting cavity, gradually separating the protrusion 311 of the clamping portion 31 from the first groove 11 of the fixing member 1.

[0140] As the buckle 3 moves, the protrusion 311 completely disengages from the first groove 11. At this time, the head 7 is unlocked successfully, and the user can freely rotate and adjust the head 7 to the required 90°, preparing for subsequent replacement of cooking accessories and performing different cooking operations.

[0141] When the handpiece 7 is rotated to 90°, the force on the button 4 is released. At this time, the reset member 5 provided in the limiting cavity takes effect, pushing the buckle 3 to move horizontally toward the fixing member 1. The protrusion 311 of the buckle 3 precisely snaps into the corresponding first groove 11. The structural characteristics of the fixing member 1 are used to evenly distribute the force, firmly locking the handpiece 7 at a 90° angle, ensuring that the handpiece 7 will not shake or shift during subsequent cooking operations.

[0142] A multifunctional food processor according to an embodiment of the present application, such as Figure 12-14 As shown, it includes a body 6 and a head 7 movably arranged on the body 6, and also includes the aforementioned locking device.

[0143] In this embodiment, the multifunctional food processor is a kitchen appliance with multiple cooking functions (such as blending, juicing, and grinding), and is composed of a body 6 and a movable head 7. The body 6 is the main support portion of the food processor, typically including components such as a base and a power supply. The head 7 is the movable portion of the food processor, typically including a motor and a stirring assembly.

[0144] In one embodiment, if Figure 10 As shown, the multi-function food processor also includes a power output device 8 provided in the machine head 7, and the power output device 8 includes a first power output head 81 and a second power output head 82 with different output speeds. The first power output head 81 is connected to a first food accessory 91, and the second power output head 82 is connected to a second food accessory 92. The function of the first food accessory 91 is different from that of the second food accessory 92.

[0145] In this embodiment, the power output device 8 is installed as a core component inside the multi-function food processor head 7, and is responsible for transmitting and outputting the power generated by the motor to drive the food processor accessories to work.

[0146] The first PTO 81 is a component of the PTO device 8, having a specific output speed. It is used to engage with the first cooking accessory 91 and provide power thereto. The second PTO 82 is parallel to the first PTO 81, having a different output speed than the first PTO 81, and is used to engage with the second cooking accessory 92 to meet different cooking needs.

[0147] The first cooking accessory 91 is a cooking tool that can be connected to the first power output head 81 and has a specific food processing function. The second cooking accessory 92 is connected to the second power output head 82 and has different functions from the first cooking accessory 91, such as mincing meat and squeezing noodles.

[0148] When using a multi-function food processor, users select appropriate cooking accessories based on their specific cooking needs. If a low-speed mixing operation such as kneading dough is required, the machine head 7 is first adjusted to 180 degrees, and then the first cooking accessory 91 (such as a kneading hook) is connected to the first power output head 81. At this time, the power output device 8 in the machine head 7 is activated, and the first power output head 81 rotates at its set low speed, driving the first cooking accessory 91 to rotate and knead the ingredients.

[0149] When the user needs to perform high-speed processing operations such as juicing, they first unlock the handpiece 7 using the locking mechanism's button 4, rotate it to the desired angle of 90°, and then relock it. Then, they snap the second cooking accessory 92 onto the second power output unit 82. The power output unit 8 is activated, and the second power output unit 82 operates at its corresponding high speed, driving the second cooking accessory 92 to juice the food. Throughout this process, the different output speeds of the power output units and the various cooking accessories complement each other, enabling the multifunctional food processor to achieve diverse cooking functions.

[0150] The present application is equipped with a first power output head 81 and a second power output head 82 with different output speeds, and is equipped with cooking accessories with different functions, so that the multi-functional food processor can realize multiple cooking functions such as stirring, kneading dough, juicing, and grinding. One device can meet the user's diverse cooking needs, and compared with single-function cooking equipment, it greatly expands the scope of use of the product.

[0151] Different power output speeds are precisely matched to the functions of cooking accessories. For example, low speed is suitable for operations such as kneading dough that require gentle stirring, while high speed is suitable for operations such as juicing and grinding that require strong crushing, ensuring that each cooking task can achieve the best effect and improving the efficiency and quality of food processing.

[0152] Users do not need to frequently change different types of food processors. They can complete a variety of cooking operations by simply replacing cooking accessories. The operation process is convenient and efficient. At the same time, the multi-angle adjustable head 7 and the reliable locking device, combined with the power output device 8 and cooking accessories, provide users with a comfortable and stable use experience, enhancing user satisfaction with the product.

[0153] The above embodiments are merely exemplary embodiments of the present application and are not intended to limit the scope of the present application. The scope of protection of the present application is defined by the claims. Those skilled in the art may make various modifications or equivalent substitutions to the present application within the essence and scope of protection of the present application, and such modifications or equivalent substitutions shall also be deemed to fall within the scope of protection of the present application.

Claims

1. A locking device, characterized in that: The invention is applied to a multifunctional food processor, the multifunctional food processor comprising a body (6) and a head (7) movably arranged on the body (6), the locking device being used to lock the head (7) on the body (6) at different angles, the locking device comprising: A fixing member (1) is provided on the machine head (7), and a plurality of first grooves (11) are provided on the fixing member (1); A bracket (2) is provided on the body (6) and forms a mounting cavity with the fixing member (1); the bracket (2) is provided with a limiting cavity communicating with the mounting cavity; A buckle (3), comprising a clamping portion (31) and a limiting portion (32) protruding from the clamping portion (31); the clamping portion (31) is arranged in the installation cavity and is provided with a plurality of convex strips (311); the limiting portion (32) is arranged in the limiting cavity; a through groove (321) is provided on the top surface of the limiting portion (32); when the buckle (3) moves in the horizontal direction, the convex strips (311) can be clamped into the corresponding first groove (11); A button (4) is movably arranged on the body (6), and the lower end of the button (4) can be moved downward in the vertical direction into the limiting cavity and engaged with the through groove (321), so that the buckle (3) moves in a direction away from the fixing member (1) to separate the protruding strip (311) from the first groove (11); A reset member (5) is provided in the limiting cavity and is used to reset the buckle (3) and the button (4) when the force applied to the button (4) is released, so that the protrusion (311) is engaged with the first groove (11) to lock the machine head (7) on the machine body (6).

2. The locking device according to claim 1, wherein: The fixing member (1) is an annular structure, comprising a first end face and a second end face arranged opposite to each other along its axial direction, the first end face being close to the machine head (7), and a plurality of the first grooves (11) being provided on the second end face, and the included angles of any two adjacent first grooves (11) being equal.

3. The locking device according to claim 1, wherein: The clamping portion (31) is a plate-like structure, one side of the plate-like structure is concave toward the other side to form a depression, and the corners of the plate-like structure are respectively provided with the convex strips (311), and the convex strips (311) are inclined relative to the outer peripheral surface of the plate-like structure.

4. The locking device according to claim 3, wherein: A connecting portion (12) connected to the outer wall of the machine head (7) is provided on the inner periphery of the fixing member (1), and an avoidance groove (312) for avoiding the connecting portion (12) is provided on one side surface of the plate-like structure.

5. The locking device according to claim 1, wherein: The bracket (2) comprises a first rod portion (22), a second rod portion (23), a rod body (24) and an annular shell (21); the first rod portion (22) is provided on a side of the shell (21) away from the buckle (3); a first through notch is provided in the middle of the first rod portion (22); a second rod portion (23) perpendicular to the first rod portion (22) is provided on the first rod portion (22); a second through notch is provided on the second rod portion (23); the rod body (24) is provided on the side of the first rod portion (22); the limiting cavity is formed inside the rod body (24); a third notch is provided on the rod body (24) and is communicated with the limiting cavity; the first notch, the second notch and the third notch are communicated.

6. The locking device according to claim 5, wherein: The limiting portion (32) is a rod-shaped structure with a square cross section, the rod body (24) is a shell (21) structure with a square cross section, and the limiting portion (32) matches the shape of the limiting cavity.

7. The locking device according to claim 5, wherein: A plurality of second grooves (25) are provided on the inner periphery of the shell (21), and the included angles of any two adjacent second grooves (25) are equal. The end of the protrusion (311) away from the first groove (11) is always engaged with the second groove (25).

8. The locking device according to claim 5, wherein: The button (4) comprises a pressing portion (41) and a rod-shaped triggering portion (42) connected to the pressing portion (41), and the triggering portion (42) is arranged in the second notch; The groove wall surface of the through groove (321) opened on the limiting portion (32) includes a first inclined surface (3211), and the lower end of the trigger portion (42) has a second inclined surface (421). When the trigger portion (42) moves downward in the vertical direction, it is inserted into the through groove (321) of the limiting portion (32) located in the limiting cavity through the third notch, and the contact between the second inclined surface (421) and the first inclined surface (3211) forces the limiting portion (32) to move in a direction away from the fixing member (1), so that the protrusion (311) is separated from the first groove (11).

9. A multifunctional food processor, characterized in that: The invention comprises a body (6) and a head (7) movably arranged on the body (6), and also comprises a locking device according to any one of claims 1 to 8.

10. The multifunctional food processor according to claim 9, wherein: The multifunctional food processor further comprises a power output device (8) disposed in the machine head (7), the power output device (8) comprising a first power output head (81) and a second power output head (82) having different output speeds, the first power output head (81) being connected to a first food processing accessory (91), the second power output head (82) being connected to a second food processing accessory (92), and the function of the first food processing accessory (91) being different from the function of the second food processing accessory (92).

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