Food processor

Abstract

The invention relates to the technical field of food processers, in particular to a food processer which comprises a connecting platform. A cooking cavity is formed in the bowl piece; the cutter shaft is rotationally arranged relative to the connecting platform and moves in the axial direction of the cutter shaft relative to the connecting platform, and at least part of the cutter shaft extends into the processing cavity; the cutter is connected with the cutter shaft; the sleeve is rotationally arranged relative to the connecting platform; a mounting space is formed in the sleeve, a first threaded structure is arranged in the mounting space, the cutter shaft is provided with a second threaded structure, and the first threaded structure is in threaded connection with the second threaded structure; the driving module is in transmission connection with the cutter shaft so as to drive the cutter shaft to rotate relative to the connecting platform; and the differential module is used for applying a constraining force to the sleeve, so that a speed difference exists between the rotating speed of the sleeve and the rotating speed of the cutter shaft. Intelligent speed changing can be carried out according to different rotary-beating cutting requirements, so that full rotary-beating cutting of food materials is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of food processors, and in particular to a food processor. Background Art

[0002] Prior art, such as Chinese invention patent document with publication number CN116114781 B, discloses an ice cream machine, in which a material cup has a material storage bin which is hollow inside and opens upward, a machine head is arranged above the material cup and can be assembled at the opening of the material cup, a cutting knife is arranged in the material storage bin of the material cup, a driving mechanism has a driver, a screw nut mechanism and a transmission shaft sleeve, and the driver in the driving mechanism realizes synchronous driving of the screw nut mechanism and the transmission shaft sleeve, so that the nut sleeve can move up and down relative to the transmission shaft sleeve while rotating, and since the cutting knife is connected to the lower end of the nut sleeve, its movement and rotation cutting can be realized, and the function of the traditional dual motor can be realized by only a single driving mechanism.

[0003] Based on the above, in the prior art, a single motor is used to drive the screw nut mechanism and the transmission sleeve respectively to drive the cutting knife to move and rotate synchronously. The problem is that, due to the limitations of the transmission structure and the lifting structure, the ratio of the moving speed and the rotating speed of the cutting knife is constant and cannot be adjusted, so that the whole machine cannot achieve intelligent speed change, especially when processing hard food materials, the moving speed is too fast, which will affect the cutting effect, and when the cutting knife is blocked, the moving speed cannot be adjusted separately to improve the cutting efficiency, which needs further improvement. Summary of the invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a food processor driven by a single motor and capable of adjusting the moving speed of a cutter separately.

[0005] A food cooking machine designed for this purpose includes: a connecting platform; a bowl member, a cooking chamber is arranged in the bowl member; a knife shaft, the knife shaft is rotatably arranged relative to the connecting platform and is axially movable relative to the connecting platform along the knife shaft, and the knife shaft at least partially extends into the cooking chamber; a cutter, the cutter is connected to the knife shaft; a sleeve, the sleeve is rotatably arranged relative to the connecting platform; an installation space is arranged inside the sleeve, a first threaded structure is arranged in the installation space, the knife shaft is provided with a second threaded structure, and the first threaded structure is threadedly connected to the second threaded structure; a driving module, the driving module is transmission-connected to the knife shaft to drive the knife shaft to rotate relative to the connecting platform; and a differential module, the differential module is used to apply a restraining force to the sleeve so that there is a speed difference between the rotation speed of the sleeve and the rotation speed of the knife shaft.

[0006] Preferably, the first thread structure is a thread groove arranged in the installation space; the second thread structure includes a connecting nut arranged on the knife shaft, and the connecting nut is threadedly connected to the thread groove.

[0007] Preferably, the knife shaft is detachably connected to the connecting nut.

[0008] Preferably, the connecting nut is provided with a coupling space, the knife shaft is provided with a coupling connection part, and the coupling connection part is movably inserted into the coupling space; the connecting nut is provided with a locking structure for constraining the coupling connection part to remain in the coupling space.

[0009] Preferably, the locking structure includes a locking groove arranged in the coupling connection part, the connecting nut is provided with a channel interconnected with the locking groove, and a locking piece which can be embedded in the locking groove is movably arranged in the channel; a retainer is provided on the outer sleeve of the connecting nut, the retainer is movably arranged relative to the connecting nut, and the retainer is provided with a retaining rib; the retaining rib abuts against the locking piece, and can constrain the locking piece to remain in the locking groove.

[0010] Preferably, the locking structure further comprises a first elastic element, which is used to apply a force to the retainer so as to keep the retainer in the locking position so that the retaining rib abuts against the locking member.

[0011] Preferably, the sleeve is provided with an unlocking trigger member, and the unlocking trigger member is provided with an unlocking trigger portion, and the unlocking trigger portion can abut against the retainer to push the retainer to move from the locked position to the unlocked position.

[0012] Preferably, the differential module includes a friction resistance element and a driving element;

[0013] The friction resistance element is arranged to rotate or move relative to the connection platform. When the friction resistance element rotates or moves relative to the connection platform, it gradually fits the sleeve or gradually moves away from the sleeve.

[0014] The driving member drives the friction resistance element to rotate or move relative to the connecting platform.

[0015] Preferably, a shaft sleeve is rotatably provided on the connecting platform, and the knife shaft is axially movable and arranged inside the shaft sleeve; the shaft sleeve is synchronously rotatably arranged with the knife shaft.

[0016] Preferably, the driving module comprises a motor, a motor shaft of the motor is connected to a driving gear, the knife shaft is transmission-connected to a driven gear, and the driving gear is transmission-connected to the driven gear.

[0017] Compared with the prior art, the present invention has a sleeve that is rotatably arranged relative to a connecting platform, and the connecting platform is provided with a differential module, and the differential module is used to apply a restraining force to the sleeve so that there is a speed difference between the rotation speed of the sleeve and the rotation speed of the cutter shaft. The sleeve is arranged to rotate, and when the sleeve is not affected by the restraining force, the sleeve and the cutter shaft rotate synchronously, and there is no speed difference between the two. At this time, the cutter shaft will not move relative to the sleeve. In this mode, the tool can be kept in the same position for rotary cutting. When the differential module applies a restraining force to the sleeve, there is a speed difference between the two. At this time, under the action of the first thread structure and the second thread structure, the cutter shaft rotates while moving relative to the sleeve in a first direction. The greater the speed difference between the two, the faster the movement speed of the cutter shaft relative to the sleeve. Intelligent speed change is realized according to different rotary cutting requirements to achieve sufficient rotary cutting of food materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0019] Figure 2 It is one of the cross-sectional structure schematic diagrams of the present invention;

[0020] Figure 3 for Figure 2 The enlarged structural diagram at A in the middle;

[0021] Figure 4 for Figure 2 The enlarged structural diagram at B in the middle;

[0022] Figure 5 This is the second schematic diagram of the cross-sectional structure of the present invention;

[0023] Figure 6 It is a schematic diagram of the three-dimensional structure of the tool shaft and the tool;

[0024] Figure 7 It is a schematic diagram of the cross-sectional structure of the cutter shaft and the cutter;

[0025] Figure 8 This is the third schematic diagram of the cross-sectional structure of the present invention;

[0026] Fig. 9 for Figure 8 The enlarged structural diagram at C in the middle;

[0027] Fig.10 It is a structural schematic diagram of the differential module. DETAILED DESCRIPTION

[0028] The following detailed description of the implementation of the technical solution of the present application is provided in conjunction with the accompanying drawings. The following implementation is only used to more clearly illustrate the technical solution of the present application, and is therefore only used as an example, and cannot be used to limit the scope of protection of the present application.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific implementation methods and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0030] In the description of the implementation methods of the present application, technical terms such as "first" and "second" are only used to distinguish different objects and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity, specific order or primary and secondary relationship of the indicated technical features.

[0031] Reference to "embodiment" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiment may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0032] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0033] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0034] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the embodiments of the present application.

[0035] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0036] like Figure 1-Figure 10 As shown, a food cooking machine comprises: a connecting platform 10; a bowl 100, wherein a cooking chamber 101 is arranged in the bowl 100; a knife shaft 30, wherein the knife shaft 30 is rotatably arranged relative to the connecting platform 10 and is axially movable relative to the connecting platform 10 along the knife shaft 30, wherein the knife shaft 30 at least partially extends into the cooking chamber 101; a knife 310, wherein the knife 310 is connected to the knife shaft 30; a sleeve 20, wherein the sleeve 20 is rotatably arranged relative to the connecting platform 10; and wherein a sleeve 20 is provided with a mounting hole. An installation space 200, wherein a first threaded structure 210 is disposed in the installation space 200, and the knife shaft 30 is provided with a second threaded structure 40, and the first threaded structure 210 is threadedly connected to the second threaded structure 40; a drive module 60, wherein the drive module 60 is transmission-connected to the knife shaft 30 to drive the knife shaft 30 to rotate relative to the connecting platform 10; and a differential module 50, wherein the differential module 50 is used to apply a restraining force to the sleeve 20 so that there is a speed difference between the rotational speed of the sleeve 20 and the rotational speed of the knife shaft 30.

[0037] The use principle of the food processor is as follows: the food material to be processed is placed in the cooking chamber 101 of the bowl 100, and the bowl 100 is assembled and fixed with the food processor so that the bowl 100 does not rotate relative to the connecting platform 10. The drive module 60 is started. Under the action of the drive module 60, the knife shaft 30 is driven to rotate, so as to drive the cutter 310 to perform rotary cutting. During the start-up process of the drive module 60, whether the cutter shaft 30 moves depends on the differential module 50. When the sleeve is not affected by the restraining force, the sleeve and the cutter shaft rotate synchronously, and there is no speed difference between the two. At this time, the cutter shaft will not move relative to the sleeve. In this mode, the cutter can be kept in the same position for rotary cutting. When the differential module applies a restraining force to the sleeve, there is a speed difference between the two. At this time, under the action of the first thread structure and the second thread structure, the cutter shaft rotates while moving relative to the sleeve along the axial direction of the cutter shaft. The greater the speed difference between the two, the faster the movement speed of the cutter shaft relative to the sleeve. Intelligent speed change is realized according to different rotary cutting requirements to achieve full rotary cutting of food materials.

[0038] like Figure 1 As shown, the connection platform 10 is provided with a fixed bracket 110 , one end of the sleeve 20 is rotatably connected to the connection platform 10 , and the other end of the sleeve 20 is rotatably connected to the fixed bracket 110 .

[0039] like Figure 3 As shown, the connecting platform 10 is rotatably provided with a sleeve 300, and the knife shaft 30 is axially movable and arranged in the sleeve 300; the sleeve 300 and the knife shaft 30 are synchronously rotated. The sleeve 300 is a spline sleeve, and the knife shaft 30 is a spline shaft. The spline sleeve and the spline shaft are plugged and matched to constrain the two to rotate synchronously and move relative to each other. Figure 3 As shown, the sleeve 300 is installed on the connection platform 10 using a plurality of bearings 120 according to actual assembly requirements.

[0040] like Figure 1 and Figure 2 As shown, the bowl 100 is fixed to the connection platform 10 in a detachable connection manner. The detachable connection structure can be connected by an existing detachable connection structure such as a screw-on structure, a threaded structure or a magnetic structure. The bowl 100 is not limited to being installed on the connection platform 10. When in use, the bowl 100 can be fixed to any part of the food processor, and only needs to be fixed relative to the connection platform 10.

[0041] like Figure 2 As shown, the bowl 100 is a cup body having a cooking cavity 101 and an opening at the upper end. When in use, the connecting platform 10 serves as a cup cover, and after being connected to the bowl 100, the bowl 100 can be sealed.

[0042] In the present invention, the knife shaft 30 is arranged to move along the axial direction of the knife shaft 30 relative to the connecting platform 10. Figure 2 As shown, the axial direction of the knife shaft 30 is the up and down direction, that is, the knife shaft is arranged to move up and down relative to the connecting platform 10.

[0043] like Figure 2 and Figure 3 As shown, the first thread structure 210 is a thread groove arranged in the installation space 200. A first embodiment of the second thread structure 40: the second thread structure 40 includes a connecting nut 410 arranged on the knife shaft 30, and the connecting nut 410 is threadedly connected with the thread groove. The connecting nut 410 cooperates with the thread groove to realize that when the knife shaft 30 drives the connecting nut 410 to rotate, when there is a rotation speed difference between the knife shaft 30 and the sleeve 20, that is, the connecting nut 410 rotates and moves relative to the sleeve 20, so as to drive the knife shaft 30 to move relative to the sleeve 20.

[0044] The second embodiment of the second thread structure 40: The second thread structure 40 is a thread provided on the cutter shaft 30, and the thread is threadedly connected to the thread groove in the installation space 200. Compared with the first embodiment of the second thread structure 40, this embodiment directly processes the thread on the cutter shaft 30, and the manufacturing cost is lower.

[0045] Further, the blade shaft 30 is detachably connected to the connecting nut 410. The function of the detachable connection is that the blade shaft 30 can be removed from the sleeve 20 during operation or later maintenance and cleaning.

[0046] like Figure 3 As shown, the first embodiment of the connection between the blade shaft 30 and the connecting nut 410: the connecting nut 410 is provided with a coupling space 400, the blade shaft 30 is provided with a coupling connection part 320, and the coupling connection part 320 is movably plugged into the coupling space 400; the connecting nut 410 is provided with a locking structure 401 for constraining the coupling connection part 320 to remain in the coupling space 400. The locking structure 401 plays a role of locking and preventing separation, constraining the connecting nut 410 and the blade shaft 30 to remain together.

[0047] Furthermore, the coupling space 400 is a key slot, and the coupling connection portion 320 is a key shaft. The plug-in fit between the key slot and the key shaft can constrain the two to rotate synchronously with each other.

[0048] Embodiment 2 of the connection between the blade shaft 30 and the connecting nut 410: The blade shaft 30 and the connecting nut 410 are connected by bolts.

[0049] Embodiment 3 of the connection between the blade shaft 30 and the connecting nut 410: The blade shaft 30 and the connecting nut 410 are connected by a magnetic attraction structure.

[0050] like Figure 3 and Figure 4As shown, the first embodiment of the locking structure 401: the locking structure 401 includes a locking groove 330 provided in the coupling connection portion 320, the connecting nut 410 is provided with a channel 420 interconnected with the locking groove 330, and a locking member 430 that can be embedded in the locking groove 330 is movably provided in the channel 420; a retainer 440 is sleeved on the outside of the connecting nut 410, and the retainer 440 is movably provided relative to the connecting nut 410, and the retainer 440 is provided with a retaining rib 450. In this embodiment, when the retainer 440 is located in the locking position, the retaining rib 450 abuts against the locking member 430, which can constrain the locking member 430 to remain in the locking groove 330, thereby constraining the knife shaft 30 and the connecting nut 410 to be connected to each other. When separating the knife shaft 30 and the connecting nut 410, the retainer 440 is driven to move relative to the connecting nut 410, so that the retainer 440 moves from the locked position to the unlocked position. In this state, the locking member 430 has space to move outward, that is, the locking member 430 has space to disengage from the locking groove 330. At this time, by driving the knife shaft 30 to move in a direction away from the connecting nut 410, the locking member 430 can be squeezed to disengage the locking groove 330. At the same time, the knife shaft 30 drives the coupling connection part 320 to disengage from the coupling space 400, and the disassembly is completed.

[0051] like Figure 3 As shown, the locking member 430 is a spherical structure, and the cross section of the locking groove 330 is an arc surface. The arc surface cooperates with the spherical locking member 430, and the two can realize that when the knife shaft 30 moves in a direction away from the connecting nut 410, the locking groove 330 can better squeeze the locking member 430, so that the locking member 430 moves in a direction away from the locking groove 330.

[0052] like Figure 3 and Figure 4 As shown, the locking structure 401 also includes a first elastic element 460, which is used to apply a force to the retainer 440 to keep the retainer 440 in the locked position so that the retaining rib 450 abuts against the locking member 430. The first elastic element 460 is a spring. When unlocking, the retainer 440 needs to be driven by an external force to move from top to bottom to the unlocking position. When there is no external force driving the retainer 440, the first elastic element 460 drives the retainer 440 to reset and move to the locked position.

[0053] like Figure 3As shown, the connection nut 410 is provided with a limit spring 470, and the function of the limit spring 470 is to abut against the retainer 440 to prevent the retainer 440 from being separated from the connection nut 410 due to the force of the first elastic element 460. Further, the retainer 440 is an annular structure. When the retainer 440 is in the locked position, the upper surface of the retainer 440 abuts against the limit spring 470. When unlocking, the retainer 440 needs to move from top to bottom to the unlocking position.

[0054] like Figure 3 and Figure 4 As shown, the sleeve 20 is movably provided with an unlocking trigger member 480, and the unlocking trigger member 480 is provided with an unlocking trigger portion 481, and the unlocking trigger portion 481 can abut against the retainer 440 to push the retainer 440 to move from the locked position to the unlocked position.

[0055] like Figure 4 As shown, the unlocking trigger member 480 is connected to the sleeve 20 by a third elastic element 490, and the third elastic element 490 keeps the unlocking trigger member 480 in the untriggered position. Figure 4 When the retainer 440 needs to be driven to move from the locked position to the unlocked position, the unlocking trigger 480 is manually pressed to move the unlocking trigger 480 relative to the sleeve 20 to push the retainer 440 to move. During this process, the third elastic element 490 is compressed and stores force. When the unlocking trigger 480 is released, the third elastic element 490 releases the stored force to drive the unlocking trigger 480 to reset.

[0056] like Figure 1 and Fig.10 As shown, the first embodiment of the differential module 50 includes a friction resistance element 510 and a driving member 500; the friction resistance element 510 is arranged to rotate or move relative to the connecting platform 10, and when the friction resistance element 510 rotates or moves relative to the connecting platform 10, it gradually fits the sleeve 20 or gradually moves away from the sleeve 20; the driving member 500 drives the friction resistance element 510 to rotate or move relative to the connecting platform 10. In this embodiment, the restraining force of the sleeve 20 is the friction force of the friction resistance element 510 on it. When the friction force is greater, the restraining force on the sleeve 20 is greater. When the restraining force on the sleeve 20 is greater, the rotation speed of the sleeve 20 is slower, and the greater the speed difference between the two, the faster the movement speed of the knife shaft relative to the sleeve. In this embodiment, the friction resistance element 510 and the driving member 500 can be set on the connecting platform 10 or at other positions of the food processor, and can be set according to needs.

[0057] Furthermore, in the embodiment where the friction resistance element 510 is rotatably arranged relative to the connecting platform 10, the friction resistance element 510 rotates around the rotating shaft 520. The friction resistance element 510 is a semicircular structure, which can make the friction resistance element 510 fit better with the sleeve 20.

[0058] Further, in the embodiment in which the friction resistance element 510 is rotatably arranged relative to the connection platform 10, the driving member 500 includes a rotating member 530, the rotating member 530 is hinged with a connecting rod 540, and the other end of the connecting rod 540 is hinged with the friction resistance element 510. In this embodiment, as the rotating member 530 rotates, it drives the friction resistance element 510 to rotate around the rotating shaft 520 through the connecting rod 540, so that the friction resistance element 510 gradually fits the sleeve 20 or gradually moves away from the sleeve 20, thereby changing the friction force of the friction resistance element 510 on the sleeve 20. In this embodiment, the rotating member 530 can be a damping knob or other existing rotating members.

[0059] Furthermore, in the embodiment where the friction resistance element 510 is rotatably arranged relative to the connection platform 10, the driving member 500 may be a motor, and the motor drives the friction resistance element 510 to rotate around the rotating shaft 520. The transmission of the two may adopt a gear transmission scheme, wherein a first gear coaxial with the rotating shaft 520 is arranged on the friction resistance element 510, and the motor shaft of the motor is connected to the second gear. The first gear meshes with the second gear to realize gear transmission.

[0060] An embodiment of a friction resistance element 510 that is movable relative to the connecting platform 10; the friction resistance element 510 is movable relative to the connecting platform 10 along a straight line, the driving member 500 adopts a linear motor, the telescopic shaft of the linear motor is fixedly connected to the friction resistance element 510, and the linear motor drives the friction resistance element 510 to move along a straight line, so that the friction resistance element 510 gradually fits the sleeve 20 or gradually moves away from the sleeve 20.

[0061] Embodiment 2 of the differential module 50: The differential module 50 uses an existing hysteresis brake, and the rotating shaft of the hysteresis brake is connected to the sleeve 20. The hysteresis brake uses the hysteresis principle to generate a certain torque by controlling the input excitation current. It is a torque control component using the hysteresis principle. It can generate torque according to the control input excitation current to control the rotation speed of the rotating shaft of the hysteresis brake, thereby controlling the rotation speed of the sleeve 20.

[0062] like Fig. 9As shown, the differential module 50 includes a stator pole 501 fixedly arranged in the food processor, a rotor 502 is rotatably arranged in the stator pole 501, and a coil is arranged in the stator pole 501. The sleeve 20 is provided with a connecting portion 503 fixedly connected to the rotor 502. The coil is energized, and the input excitation current is controlled to generate torque to control the rotation speed of the rotor 502, thereby controlling the rotation speed of the sleeve 20.

[0063] like Figure 2 As shown, the driving module 60 includes a motor 610 , a motor shaft 620 of the motor 610 is connected to a driving gear 630 , the knife shaft 30 is transmission-connected to a driven gear 640 , and the driving gear 630 is transmission-connected to the driven gear 640 .

[0064] Furthermore, the driven gear 640 is fixedly connected to the shaft sleeve 300 , the driving gear 630 drives the driven gear 640 to rotate, the driven gear 640 drives the shaft sleeve 300 to rotate, and the shaft sleeve 300 drives the knife shaft 30 to rotate.

[0065] like Figure 1 As shown, the connecting platform 10 is provided with a sensing module 70 for sensing the position of the knife shaft 30; the knife shaft 30 moves between a first position and a second position along its axial direction relative to the connecting platform 10; when the knife shaft 30 is located at the second position, the sensing module 70 triggers sensing.

[0066] like Figure 5 As shown, the sensing module 70 uses a micro switch 710. When the knife shaft 30 moves to the second position along its axial direction, the knife shaft 30 triggers the sensing end 720 of the micro switch 710. The micro switch 710 feeds back a signal to the control mainboard of the food processor so that the control mainboard can obtain the position information of the knife shaft 30, thereby controlling the rotation direction of the driving module 60, that is, controlling the rotation direction of the motor 610. As the rotation direction of the knife shaft changes, the movement direction of the knife shaft also changes with the cooperation of the first thread structure and the second thread structure.

[0067] like Figure 5 As shown, the connection platform 10 is movably provided with a trigger rod 730, and the trigger rod 730 reciprocates between the sensing position and the separation position relative to the connection platform 10, and the connection platform 10 is provided with a second elastic element 740 for driving the trigger rod 730 to remain in the separation position. When the knife shaft 30 moves to the second position along its axial direction, the knife shaft 30 presses the trigger rod 730, so that the trigger rod 730 moves from the separation position to the sensing position, so as to trigger the sensing end 720 of the micro switch 710. When the knife shaft 30 is separated from the trigger rod 730, the second elastic element 740 pushes the trigger rod 730 to move to the separation position.

[0068] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A food processor, characterized in that: include: Connecting platform (10); A bowl (100), wherein a cooking cavity (101) is provided in the bowl (100); a knife shaft (30), the knife shaft (30) being rotatably disposed relative to the connecting platform (10) and being movably disposed along the axial direction of the knife shaft (30) relative to the connecting platform (10), and the knife shaft (30) at least partially extending into the cooking chamber (101); A tool (310), wherein the tool (310) is connected to the tool shaft (30); A sleeve (20), the sleeve (20) being rotatably arranged relative to the connecting platform (10); an installation space (200) is arranged inside the sleeve (20), a first thread structure (210) is arranged inside the installation space (200), the knife shaft (30) is provided with a second thread structure (40), and the first thread structure (210) is threadedly connected to the second thread structure (40); A driving module (60), the driving module (60) being drivingly connected to the knife shaft (30) so as to drive the knife shaft (30) to rotate relative to the connecting platform (10); A differential module (50) is used to apply a restraining force to the sleeve (20) so that there is a speed difference between the rotation speed of the sleeve (20) and the rotation speed of the knife shaft (30).

2. A food processor according to claim 1, characterized in that: The first thread structure (210) is a thread groove arranged in the installation space (200); The second thread structure (40) comprises a connecting nut (410) arranged on the cutter shaft (30), and the connecting nut (410) is threadedly connected to the thread groove.

3. A food processor according to claim 2, characterized in that: The blade shaft (30) is detachably connected to the connecting nut (410).

4. A food processor according to claim 3, characterized in that: The connecting nut (410) is provided with a coupling space (400), and the knife shaft (30) is provided with a coupling connection portion (320), and the coupling connection portion (320) is movably plugged into the coupling space (400); The connecting nut (410) is provided with a locking structure (401) for constraining the coupling connection portion (320) to remain within the coupling space (400).

5. A food processor according to claim 4, characterized in that: The locking structure (401) comprises a locking groove (330) arranged in the coupling connection portion (320); the connecting nut (410) is provided with a channel (420) which is in communication with the locking groove (330); a locking member (430) which can be movably embedded in the locking groove (330) is provided in the channel (420); The connecting nut (410) is sleeved with a retainer (440) on its exterior, the retainer (440) being movably arranged relative to the connecting nut (410), and the retainer (440) being provided with retaining convex ribs (450); The retaining rib (450) abuts against the locking member (430) and can constrain the locking member (430) to remain in the locking groove (330).

6. A food processor according to claim 5, characterized in that: The locking structure (401) further comprises a first elastic element (460), wherein the first elastic element (460) is used to apply a force to the retainer (440) so as to keep the retainer (440) in a locked position and to make the retaining rib (450) abut against the locking member (430).

7. A food processor according to claim 5, characterized in that: The sleeve (20) is movably provided with an unlocking trigger member (480), and the unlocking trigger member (480) is provided with an unlocking trigger portion (481), and the unlocking trigger portion (481) can abut against the retainer (440) to push the retainer (440) to move from a locked position to an unlocked position.

8. The food processor according to claim 1, characterized in that: The differential module (50) comprises a friction resistance element (510) and a driving element (500); The friction resistance element (510) is arranged to rotate or move relative to the connection platform (10); when the friction resistance element (510) rotates or moves relative to the connection platform (10), it gradually fits the sleeve (20) or gradually moves away from the sleeve (20); The driving member (500) drives the friction resistance element (510) to rotate or move relative to the connecting platform (10).

9. The food processor according to claim 1, characterized in that: The connecting platform (10) is rotatably provided with a shaft sleeve (300), and the knife shaft (30) is movably provided in the shaft sleeve (300) along its axial direction; the shaft sleeve (300) and the knife shaft (30) are rotatably provided synchronously.

10. The food processor according to claim 1, characterized in that: The driving module (60) comprises a motor (610), a motor shaft (620) of the motor (610) being connected to a driving gear (630), the knife shaft (30) being transmission-connected to a driven gear (640), and the driving gear (630) being transmission-connected to the driven gear (640).

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