CN216724289U - Multifunctional food processor - Google Patents

Abstract

The utility model discloses a multifunctional food processing machine which comprises a host machine, a processing cup and a motor, wherein the motor is arranged in the host machine, a stirring piece driven by the motor is arranged in the processing cup, the multifunctional food processing machine also comprises a speed change device and a clutch device, the speed change device comprises an input end, an output end, a first speed change module and a second speed change module, the clutch device comprises a driving module and a power transmission module, the clutch device is connected with the speed change device and drives the input end to select power connection or disconnection between the first speed change module and the second speed change module, the driving module and the power transmission module are nested so that the driving module and the power transmission module are overlapped in the axial direction, and the overlapping proportion range of the driving module and the power transmission module is 5% -100%. The speed changing device is provided with a plurality of groups of speed changing modules, and the clutch device can combine the same input among different speed changing modules so as to realize different output rotating speeds under the condition that the rotating speed of the motor is not changed.

Description

Multifunctional food processor

Technical Field

The utility model relates to the field of food processing for kitchens, in particular to a multifunctional food processing machine capable of meeting the requirements of various processing functions.

Background

Along with the continuous promotion of people's standard of living, the demand to food processing is constantly promoting, simultaneously, more becomes more meticulous to the processing of eating the material, and the functional requirement is more diversified. According to the traditional food processing machine, one part can improve functions of stirring, cutting, heating and the like, and the other part realizes functions of mincing meat, shredding, slicing, kneading dough and the like through the multifunctional cup with the reduction box, so that the application range of the food processing machine is expanded, and partial requirements of users are met. The reason for setting up like this lies in different functions, and is different to the requirement of rotational speed, for example needs very high rotational speed when realizing functions such as broken wall soybean milk, usually is more than 20000 revolutions per minute to the realization is broken the wall and is smashed the abundant edible material. When mincing, shredding and slicing, only thousands of revolutions per minute are needed; and the further dough kneading and single stirring functions require hundreds or even tens of revolutions per minute.

In the prior art, three types of motors are usually used for realizing rotation speed adjustment, the first type is directly driven by a motor, the motor can realize the output of various different rotation speeds, such as a reluctance motor, and the motor can realize the rotation speed output in a wide range so as to meet the requirements of different rotation speeds; the second type is provided with a motor which can be adjusted in a smaller range, processing cups with different functions are configured, the processing cups with different functions are provided with different speed reducing devices, and different rotating speed requirements are realized through the combination of the processing cups and a host; the third type sets up motor and decelerator on the host computer, requires different functional requirements, can export different rotational speeds through changing decelerator.

However, the prior art still has the following problems. For the first technique, the cost of the motor and the cost of the control of the use are relatively high, so that the cost of the food processor is relatively high and the requirement of low-cost products cannot be met. Although the second technique can be implemented by using a low-cost motor, if different functions are required, different speed reduction devices are required to be configured for each different function, and if more functions are required, the required speed reduction devices are correspondingly increased, which still results in higher cost when multiple functions are required.

For the third solution, the prior art, such as patent No. CN201410005535.8, discloses a food processor, which realizes the combination of different speed reducers by providing multiple sets of speed reducers and simultaneously providing a gear shifting mechanism, so as to realize different rotational speed outputs when different inputs are input, so as to meet the requirements of different rotational speeds. However, the technical problems of the technical scheme are as follows: first, in the scheme, the input and the output are bound to pass through the speed reducer, the motor cannot be directly driven, and due to the participation of the speed reducer, the use efficiency of the motor is reduced, and meanwhile, the high-speed output rotating speed of the motor is reduced, so that the normal use of a high-speed function is influenced. Secondly, because decelerator all participates in wherein continuously, decelerator all participates in when using each function, has increased the noise that decelerator used and brought promptly, still uses decelerator life greatly reduced after lasting the use, influences food preparation machine's normal life. Thirdly, although a plurality of groups of speed reducing devices are arranged, the final speed reducing ratio is only 2.3-9.2, and when a very low rotating speed is required, the motor still needs to output a lower rotating speed, so that the high-performance output of the motor is influenced. Fourthly, the gear shifting mechanism in the prior art has a complex structure and occupies more space, so that the volume of the whole speed changing device is increased, the whole volume of the food processor is increased, and the waste of space is caused; simultaneously, because the gear shift structure direct action is on the rotating gear, inconvenient decelerator's whole is sealed for dust etc. easily get into between the gear, influence the normal work of gear, increase noise and wearing and tearing have reduced decelerator's normal life, still inconvenient increase lubricating oil, life and noise increase simultaneously. Fifth, in the prior art, although there are multiple sets of speed reducers, the final outputs of different speed reducers are also different, so that the speed of the connection end of a single output still needs to be adjusted, and different speed outputs at a single output end cannot be realized when the output of the motor is not changed.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a multifunctional food processor which is provided with a plurality of groups of speed reducing devices and meets the combined output requirements of different rotating speeds.

In order to achieve the purpose, the utility model adopts the following technical scheme: a multifunctional food processor comprises a host machine, a processing cup and a motor, wherein the motor is arranged in the host machine, a stirring piece driven by the motor is arranged in the processing cup, wherein, the food processor also comprises a speed change device and a clutch device, the speed change device comprises an input end, an output end, a first speed change module and a second speed change module which are positioned between the input end and the output end, the clutch device is connected with the speed changing device and drives the input end to select power connection or disconnection between the first speed changing module and the second speed changing module, the clutch device comprises a driving module and a power transmission module, the driving module and the power transmission module are nested so that the driving module and the power transmission module are overlapped in the axial direction, the overlapping proportion range of the driving module and the power transmission module is 5% -100%, and the output end outputs different rotating speeds and drives the stirring piece.

Preferably, the first speed changing module and the second speed changing module are sequentially arranged along the axial direction, the driving module comprises a driving part and a driven part, the driving part is rotatably arranged to drive the driven part to move along the axial direction, so that the driving module drives the power transmission module to move axially to enable the input end to be in power connection with or separate from the first speed changing module or the second speed changing module.

Preferably, the driving part and the driven part are respectively an outer frame and an inner frame which are nested, the outer frame is rotatably arranged and drives the inner frame to axially move, the power transmission module comprises a gear shifting head which is rotatably connected with the inner frame, the inner frame is limited to the gear shifting head in the axial direction so as to drive the gear shifting head to axially move, one end of the gear shifting head is in power connection with the input end, and the other end of the gear shifting head is in power connection or separation with the first speed changing module or the second speed changing module in the axial movement.

Preferably, the output end comprises a first connector and a second connector, the first connector is in power connection with the gear shifting head, and the second connector is in power connection with the second speed changing module.

Preferably, the inside casing includes the cabinet body and frame, shift the head set up in the frame, through the bearing rotation connection between shift the head and the frame.

Preferably, the driving module further comprises a driving motor, outer side walls of the outer frame are provided with outer teeth, the driving motor drives the outer frame to rotate through the outer teeth, the outer frame is in threaded connection with the inner frame, and the inner frame is driven to move axially when the outer frame rotates.

Preferably, the driving part and the driven part have helicoids that mutually support, the driving part is rotatable to be set up and drive driven part axial displacement, power transmission module include with driven part rotatable coupling's gear shift head, the driven part is spacing in order to drive the gear shift head is at axial displacement, gear shift head one end and input power connection, the other end is connected or breaks away from with first variable speed module or second variable speed module power when axial displacement.

Preferably, the driving module comprises a top rod and an elastic piece, the power transmission module comprises a gear shifting frame, the top rod and the elastic piece are connected with the gear shifting frame and arranged on the outer side of the gear shifting frame, and the top rod and the elastic piece can push the gear shifting frame to move axially so as to be in power connection with or separate from the first speed changing module or the second speed changing module.

Preferably, the first transmission module comprises a first planetary gear train, the second transmission module comprises a second planetary gear train, the first planetary gear train and the second planetary gear train are sequentially arranged along the axial direction, the first planetary gear train comprises a first planetary gear, a first planet carrier and a first planet carrier, the second planetary gear train comprises a second planetary gear, a second planet carrier and a second planet carrier, the clutch device comprises a gear shift head capable of moving axially, and the gear shift head can be respectively connected with or separated from the first planetary gear and the second planetary gear when moving axially so as to be in power connection with or separated from the first planetary gear train or the second planetary gear train.

Preferably, the first transmission module comprises a first planetary gear train, the second transmission module comprises a second planetary gear train, the first planetary gear train and the second planetary gear train are sequentially arranged along the axial direction, the first planetary gear train comprises a first planetary gear, a first planet carrier and a first planet carrier, the second planetary gear train comprises a second planet gear, a second planet carrier and a second planet carrier, the clutch device comprises a movable gear carrier, and the movable gear carrier moves along the axial direction to form the first planet carrier of the first planetary gear train or the second planet carrier of the second planetary gear train or is positioned between the first planetary gear train and the second planetary gear train to simultaneously engage the first planet carrier and the second planet gear.

After the technical scheme is adopted, the utility model has the following advantages:

1. in the utility model, the speed change device and the clutch device are arranged, the speed change device is provided with a plurality of groups of speed change modules, the clutch device can enable the same input to be combined among different speed change modules so as to realize different output rotating speeds, and meanwhile, the clutch device can also enable the speed change device to be disengaged, so that the motor directly drives the output connector without the participation of the speed change device, the high-efficiency and high-speed output of the motor is ensured, the speed change device does not work when not needed, the noise is reduced, and the service life of the speed change device is prolonged. Furthermore, the clutch device can be selectively switched among different speed changing modules, so that the same output end has different rotating speeds when the same input rotating speed is achieved, on one hand, the application range of the food processor is greatly improved, the requirement that a plurality of different output connectors are matched with the corresponding connectors on the processing cup is reduced, on the other hand, in the food material processing process, different processing stage requirements can be required, the rotating speed can be automatically changed to meet the processing requirements, for example, a processing procedure of baking, dry grinding and crushing, food materials are required to be baked and fried firstly, when the food materials are baked and fried, the food materials need to be turned over at a very low rotating speed so as to ensure that the baking and the frying are more uniform, and when the baking and the frying are finished, need higher rotational speed to smash, can export the function of different rotational speeds and can realize this course of working simultaneously, avoid the user to realize single function switching different processing subassemblies. Moreover, the clutch device is arranged to select and switch among different speed change modules, so that when a plurality of groups of speed change modules can be selected for linkage, the output of high speed change ratio can be realized, for example, the output of high speed ratio of 30-140 is reached, therefore, the lower speed output can still be realized when the common series excited motor outputs high efficiency and high speed, the motor does not need to be adjusted at too low speed, and the use efficiency of the motor is improved. Although in the field of automobiles or other machinery, the technical scheme of single input and single output at different rotating speeds also exists, the technical scheme of the application is completely different from the field of food processing related to the application, and no matter the technical scheme, the using environment, the requirement of speed reduction ratio, the requirement of power transmission, the requirement of volume, noise and the like are obviously different, and the technical scheme and the corresponding technical revelation which can be used by reference are completely absent. When the driving module and the power transmission module are nested in the axial direction, the driving module and the power transmission module are overlapped in the axial direction, so that the axial size of the clutch device can be compressed, the axial size of the whole speed changing device and the clutch device is reduced, and the overall height of the food processor is finally reduced. When overlapping, the driving module and the power transmission module have an overlapping proportion, and the overlapping proportion refers to the ratio of the overlapping size of the driving module and the power transmission module in the axial direction to the size of a fitting with a smaller size in the axial direction between the driving module and the power transmission module. For example, when the power transmission module is nested inside the drive module and the dimension L1 of the power transmission module in the axial direction is smaller than the dimension L2 of the drive module in the axial direction, and the overlap dimension of the power transmission module and the drive module in the axial direction is L, the overlap ratio is the ratio of the overlap dimension L to the dimension L1 of the power transmission module, i.e., L/L1. Wherein, the ratio of L/L1 is more than or equal to 5 percent and less than or equal to 100 percent. If the overlapping proportion is too small, the size in the axial direction cannot be reduced more by reflecting the overlapping proportion on the clutch device, and the overall height of the food processor is further influenced; for the power transmission module and the driving module, there may be a completely nested positional relationship therebetween, for example, when the power transmission module is nested in the middle of the driving module, and the power transmission module is smaller in axial dimension, so that the power transmission module has a positional relationship completely falling into the driving module, and the overlap ratio of the two is 100%, which of course can minimize the height of the clutch device and the food processor in the axial direction. It should be noted that, of course, since the clutch device is used to adjust the transmission device during operation, the mutual position relationship between the driving module and the power transmission module is in a changing state, which also results in a changing state of the overlap ratio, where the overlap ratio refers to the ratio when the driving module and the power transmission module are at the maximum overlap ratio, i.e. in the preset adjustable position of the food processor, when the driving module and the power transmission module can be nested with each other to the maximum extent, the overlap ratio is calculated.

2. The first speed changing module and the second speed changing module are sequentially arranged along the axial direction, so that the size of the speed changing device can be conveniently compressed, the whole volume of the food processing machine is further reduced, and a user can conveniently control the food processing machine; on the other hand, the first speed changing module and the second speed changing module are arranged in sequence in the axial direction, so that the first speed changing module and the second speed changing module can be connected with each other conveniently to work, further serial speed reduction is realized, and the speed reduction ratio is greatly improved; in addition, the axial direction is arranged in sequence, the clutch device is convenient to select or separate in the axial direction, different speed reduction transmission requirements are realized, and when the speed reduction work is not needed, the clutch device is convenient to separate the speed change device from the motor, so that the speed change device does not work in a non-working state, the noise generated by the speed change device is reduced, and the service life of the speed change device is prolonged. Furthermore, the clutch device is arranged on the driving module and the power transmission module which are nested with each other in the radial direction, wherein the driving module is used for driving the power transmission module to move so as to realize power connection or disconnection, so that the axial space can be compressed, the integral volume of the speed change device and the clutch device is further reduced, and the clutch device is small in size; meanwhile, the driving module and the power transmission module are easy to control, the driving module can accurately control the power transmission module to reach a preset position to realize power transmission, and multi-position positioning transmission can be realized to realize the functional requirements of multi-rotating-speed output, power separation and the like. Compared with the prior art, the multifunctional bicycle can only change between two positions, the function is obviously improved, and the beneficial effect is obvious.

3. The driving part and the driven part are arranged, the driving part can be arranged in a rotating mode to drive the driven part to move along the axial direction, the movement mode of the driving module is changed from rotation to axial movement, and for an assembly formed by the speed changing device and the clutch device, only rotation needs to be embodied outside, and axial movement does not need to be carried out outside, so that the external space is not occupied, the axial size of the speed changing device and the clutch device is further compressed, and the size is smaller; meanwhile, the whole speed change module and the clutch module are conveniently arranged in a closed space only by rotating the whole speed change module and the clutch module externally, and only corresponding power input and output connection is required to be reserved.

4. The outer frame and the inner frame are arranged in a nested mode, the inner frame is driven to move axially through the rotation of the outer frame, the rotation can be changed into axial movement, for the speed changing device and the clutch device, the outer frame only needs to be rotated externally, the axial and radial movement space is not needed, and the size of the speed changing device and the size of the clutch device can be greatly reduced. Meanwhile, the rotating action is changed into axial movement, so that the rotating precision can be conveniently controlled, the axial movement precision can be further controlled, and the clutch device can be better ensured to be switched between preset positions. Further, because moving parts do not need to be arranged outside, the speed changing device and the clutch device can be arranged into a complete whole body, the sealing arrangement is convenient, dust and the like are guaranteed to enter the whole assembly, the service life is prolonged, lubricating oil is filled in the whole assembly conveniently, moreover, the whole assembly is sealed, noise generated inside is not easy to transmit to the outside, and noise generated in the work of the whole assembly can be effectively reduced.

5. The first connector and the second connector are arranged, wherein the first connector is directly connected with the gear shifting head in a power mode, high-speed output of the motor can be directly achieved without the aid of the speed changing device, the rotating speed output of speed changing is needed, the rotating speed is output through the second connector, high-speed control is facilitated, participation of the speed changing device in a non-speed reducing state is reduced, working noise of the food processing machine is reduced, and the normal service life of the speed changing device is prolonged.

6. The frame only needs to push the gear shifting head to move in the axial direction, and when the gear shifting head participates in power transmission, the power transmission is not needed between the gear shifting head and the frame, so that the influence on the frame can be reduced, namely, the gear shifting head can participate in the power transmission at high speed, and the structural requirement of the frame is reduced.

7. Set up driving motor and external tooth and drive the frame rotatory, do not need too big torsion when rotatory, can set up small, the motor of convenient control, servo motor for example commonly used, driving motor passes through the external tooth drive frame rotation, the frame further passes through threaded connection with the inside casing, accessible screw thread promotes the inside casing in order to realize adjusting at axial displacement on the one hand, on the other hand, the auto-lock of accessible screw thread prevents that the relative frame of inside casing from removing, guarantee the accuracy and the reliability of control.

8. Further set up drive gear and drive the frame, can be convenient set up the epitheca and the inferior valve will be except that driving motor all parcel of other parts, and driving motor can pass epitheca or inferior valve and realize being connected with drive gear, like this, can be convenient seal speed change gear and clutch inside the inner chamber, the inner chamber is kept apart with the outside, avoids interference such as external dust, convenient lubrication, noise reduction.

9. The gear shifting frame is pushed by the ejector rod and the elastic piece, the driving module and the power transmission module move in the axial direction, the occupied space when the driving module is arranged in other directions is reduced, and the compression of the space volume can be realized. The ejector rod and the elastic piece are used for synchronous control, and the acting force and the reacting force are utilized, so that the control is accurate, and the stroke is adjustable. Similarly, because the driving module and the power transmission module move in the axial direction, only the ejector rod part can be arranged outside the inner cavity, and a sealing device can be arranged between the ejector rod and the shell, so that the inner cavity can be sealed.

10. The first planetary gear train and the second planetary gear train are arranged, so that the technology is mature, the production and the manufacture are convenient, and the planetary gear train can be used generally with the prior art. Preferably, the first planet carrier is further provided with transmission gear teeth which can be connected with the second planet gear train in series when needed to realize linkage of two groups of speed reduction modules, so that high-speed reduction ratio output is achieved, and meanwhile, the first planet carrier can be directly connected with a gear shifting head in a power manner to realize single-stage speed reduction. Of course, the speed changing device can further superpose more speed changing modules, such as a third speed changing module, a fourth speed changing module and the like, so as to realize more speed changing outputs and more reduction ratio adjustment. And for the clutch device, different rotating speed outputs can be realized only by adjusting different sun gear positions, the control is simpler and more convenient, and more accurate control can be realized.

11. The movable tooth frame is arranged to control different planetary gears, the clutch device is controlled outside the gear train, the position of the movable tooth frame is easier to control, the relative positions of different internal groups of planetary gear trains do not need to be adjusted, and the stability is high.

Drawings

FIG. 1 is a sectional view of the multifunctional food processor of the present invention.

FIG. 2 is an exploded view of the transmission and clutch device of the food processor according to the first embodiment of the present invention.

FIG. 3 is a schematic diagram of a food processor according to a first embodiment of the present invention showing a transmission and a clutch device in an exploded second state.

FIG. 4 is an exploded view of a high speed output state of a food processor according to a first embodiment of the present invention.

FIG. 5 is a schematic diagram of a power transmission module of a food processor according to a first embodiment of the present invention.

FIG. 6 is a schematic view of a shifter head according to a first embodiment of the food processor of the present invention.

FIG. 7 is a sectional view of a power transmission module of a food processor according to a first embodiment of the present invention.

Fig. 8 is a partially enlarged view of a in fig. 7.

Fig. 9 is a schematic view of a first planet carrier of a first embodiment of the food processor according to the utility model.

Fig. 10 is a cross-sectional view of a first planetary carrier structure of a first embodiment of the food processor of the present invention.

Fig. 11 is a partially enlarged schematic view of an outer frame of a first embodiment of the food processor according to the present invention.

FIG. 12 is a sectional view of a first output state matching state structure of the food processor according to the first embodiment of the present invention.

FIG. 13 is a schematic diagram of power transmission at a first output state of the food processor according to the first embodiment of the present invention.

FIG. 14 is a sectional view of the structure of the food processor according to the first embodiment of the present invention in a second output state.

FIG. 15 is a schematic diagram of power transmission in a second output state of the food processor according to the first embodiment of the present invention.

FIG. 16 is a sectional view of a food processor according to a third embodiment of the present invention in a configuration of a third output mode.

FIG. 17 is a power transmission diagram illustrating a third output state of the food processor according to the first embodiment of the present invention.

FIG. 18 is an exploded view of a transmission and a clutch device of a food processor according to a second embodiment of the present invention.

FIG. 19 is a cross-sectional view of a fixed frame of a food processor according to a second embodiment of the present invention.

FIG. 20 is a sectional view of a second embodiment of a food processor according to the present invention in a first output configuration.

FIG. 21 is a sectional view of a second embodiment of a food processor according to the present invention in a second output configuration.

Fig. 22 is a partially enlarged view of B in fig. 21.

Fig. 23 is a partially enlarged view of C in fig. 21.

The figures are labeled with the corresponding names as follows:

101. a processing module; 102. a host; 103. a motor; 1031. a motor bracket; 1032. positioning holes of the motor; 104. a motor shaft; 105. a processing cup; 106. a cup cover; 107. a stirring knife; 21. a lower cover of the gearbox; 211. a motor mounting post; 212. a motor positioning column; 22. an upper cover of the gearbox; 221. inner teeth of the upper cover; 222. an upper cover through hole; 25. an upper cover; 251. an upper cover fixing hole; 26. fixing the gear frame; 261. inner teeth of the gear frame; 262. a fixed tooth frame fixing hole; 263. a tooth frame fixing rib; 27. a lower cover; 271. a lower cover fixing hole; 28. fixing the bolt; 31. an outer frame; 311. an outer frame body; 312. outer frame teeth; 313. outer frame threads; 32. an inner frame; 321. an inner frame body; 322. inner frame threads; 323. inner teeth of the inner frame; 324. the inner frame is provided with a notch; 33. a gear shifting fork; 331. a fork column; 332. a shifting fork connecting rod; 333. a fork body; 3331. the shifting fork body is protruded; 334. a shifting fork screw; 34. a drive gear; 35. a shift motor; 41. a shift head; 411. a shift head body; 4111. a gear shifting head limiting plate; 4112. the limiting plate is raised; 412. a gear shift head clamping groove; 413. a shift head drive tooth; 414. a first flat position of the gear shifting head; 415. a second flat position of the gear shifting head; 416. a limiting groove; 417. a limiting clamp spring; 418. a shift bearing; 4181. a bearing inner race; 4182. an outer race of the bearing; 419. a bearing spacer; 42. a first planet gear; 421. a first planet gear mounting hole; 422. first planet gear teeth; 43. a first carrier; 431. a first planet carrier body; 432. a first planet carrier mounting post; 433. a first carrier gear; 434. a first carrier inner tooth; 435. a first planet carrier through hole; 51. a second planet carrier; 52. a second planet wheel; 521. a second planet wheel lower gear; 522. a second planet wheel upper gear; 523. a second planet wheel mounting hole; 53. a second output wheel; 531. a second output wheel body; 532. a second output wheel mounting post; 61. a high speed output shaft; 611. a first drive tooth; 62. a first connector; 63. a second connector; 711. a first fixed gear frame; 7111. fixing the tooth frame body; 7112. fixing a gear frame column; 7113. a fixed gear frame mounting hole; 7114. fixing the inner teeth of the gear frame; 712. a first planet gear; 713. a first carrier; 7131. a first carrier outer tooth; 714. a first carrier tooth; 721. a second planet wheel; 722. a second planet carrier; 723. a second carrier tooth; 731. a third planet gear; 732. a third carrier; 733. a bearing; 81. a shifting fork; 811. a fork body; 812. a fork column; 813. a fork carriage; 814. plucked tines; 82. a spring; 83. a top rod; 84. a movable tooth frame; 841. a movable internal tooth; 842. a movable tooth frame fixing groove; 843. a movable tooth groove.

Detailed Description

In order to more clearly explain the overall concept of the present application, the following detailed description is given by way of example in conjunction with the accompanying drawings.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application, however, the present application may be practiced in other ways than those described herein, and therefore the scope of the present application is not limited by the specific embodiments disclosed below.

In addition, in the description of the present application, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", and the like, indicate orientations and positional relationships based on those shown in the drawings, are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. And the positional relationships such as "upstream" and "downstream" are based on the positional relationships when the fluid normally flows.

Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; the connection can be mechanical connection, electrical connection or communication; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. In the description herein, reference to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The multifunctional food processor comprises a host machine, a processing cup and a motor, wherein the motor is arranged in the host machine, the processing cup is detachably connected with the host machine, a stirring piece is arranged in the processing cup, and when the processing cup and the host machine are installed and connected in place, the stirring piece can be driven by the motor to process food materials placed in the processing cup. The processing cup and the stirring piece can form a processing module together, and for different processed food materials, the stirring piece needs to work at different rotating speeds, for example, the food materials needing wall breaking and crushing are generally required to be more than 10000rpm (rpm: revolution/minute), so that the food materials can be better cut and crushed, the cell wall breaking of the food materials is realized, and nutrition is fully released; for the food material shredding and slicing process, 1000rpm-3000rpm is usually required, and better processing cannot be realized if the rpm is too high or too low; for dough kneading or stirring processing, 30-300 rpm is required to better realize dough kneading and food material overturning, and crushing of the food material at high speed is not required; for example, when the food materials are subjected to dry grinding processing, the food materials are generally subjected to pre-baking, namely, the moisture content of the food materials is reduced, and the nutrition and aroma of the food materials are released, so that when the food materials are baked, the food materials can be stirred and overturned at an extremely low rotating speed, and when the food materials are required to be crushed after the baking is finished, the food materials can be processed at a high speed to be sufficiently crushed. Alternatively, the food processor may have a plurality of different sets of processing modules, such as a stirring and crushing module with a crushing blade, a shredding and slicing module consisting of a shredding and slicing cup and a shredding and slicing blade for shredding and slicing, a mincing module consisting of a mincing cup and a mincing blade for mincing meat, and a dry grinding module consisting of a dry grinding cup and a dry grinding blade for dry grinding and crushing. This application food preparation machine still includes speed change gear and clutch, and speed change gear includes input, output and lies in first variable speed module and the second variable speed module between input and the output, and like this, speed change gear's input can be connected with motor power, and stirring spare is connected with speed change gear's output power, under the unchangeable prerequisite of the rotational speed of motor, the output can export different rotational speeds to satisfy multi-functional food preparation machine's work demand. The clutch device is connected with the speed change device and can drive the input end to be in power connection or disconnection between the first speed change module and the second speed change module. Therefore, when the clutch device drives the input end to be not connected with the first speed changing module or the second speed changing module, the input end is directly connected with the output end, and the motor is directly connected with the output end through the input end and the output end and further connected with the stirring piece in a power mode, so that high-speed output is achieved; when the clutch device drives the input end to be in power connection with the first speed changing module or the second speed changing module, the input of the motor realizes speed changing through the first speed changing module or the second speed changing module respectively, different rotating speed output is realized, and for the final output end, only a single output connector can be arranged and is in power connection with the stirring piece. Of course, the output end can also be provided with a plurality of different connectors, the stirring pieces can be arranged into a plurality of groups, and the stirring pieces of different groups are respectively connected with different output connectors so as to realize the processing of the stirring pieces under the conditions of different rotating speeds. It should be noted that, the main body and the processing cup of the food processor described in the present application may also be integrally disposed, for example, an accommodating cavity is disposed in the main body to form a processing cavity, and a stirring member is disposed in the processing cavity, and the motor is disposed in the main body and is dynamically connected to the stirring member through a speed changing device or directly.

The first embodiment.

As a first embodiment of the multifunctional food processor of the present invention, as shown in fig. 1-17, the food processor includes a main frame 102 and a processing cup 105, a motor 103 is disposed in the main frame 102, the stirring member 107 is disposed in the processing cup 105, a lid 106 closes an upper opening of the processing cup 105, the lid 106 and the stirring member 107 together form a processing module 101, and the processing module 101 can be replaced according to different processing requirements. The motor 103 is in power connection with the stirring member 107 through the motor shaft 104 to drive the stirring member 107 to rotate and process the food material placed in the processing cup 105. Of course, it should be noted that the processing cup 105, the cup cover 106 and the stirring member 107 are only general processing modules for implementing one or more processing modes, and the processing module 101 is not limited to include these functional components, for example, the processing cup may be a wall-breaking stirring cup with a heating function, or a container for implementing a shredding and slicing function, or a container for mincing meat and kneading dough; similarly, the stirring component can be a crushing blade for cutting and crushing, a shredding and slicing blade for shredding and slicing, or a dough kneading and mincing blade for mincing meat and kneading dough, or even a plurality of groups of blades, and different blades can have different speeds to realize different processing functions.

The food processor further comprises a speed changing device and a clutch device, preferably, the speed changing device and the clutch device are arranged on the host machine 102, the host machine 102 is provided with a lower gearbox cover 21 and an upper gearbox cover 22, the lower gearbox cover 21 and the upper gearbox cover 22 are buckled with each other to form a relatively closed inner cavity, and main functional components of the speed changing device and the clutch device are arranged in the inner cavity and are connected with external power through corresponding rotating shafts. It should be noted that the relatively closed inner cavity means that the other parts are set as closed cavities except that the necessary power input and output structure can be connected with the outside through a sealing structure, and does not mean that the inner cavity is completely free from any association with the outside. The main functional assembly is a functional assembly capable of realizing a main speed change function and a clutch function, and a functional module connected with the outside is required to realize power transmission and is usually arranged to be partially arranged in the inner cavity and partially extend out of the inner cavity to realize power connection. The gearbox lower cover 21 is provided with a mounting table, the mounting table includes a motor mounting post 211, a motor positioning post 212 is formed at an end of the motor mounting post 211, the motor 103 has a motor support 1031, a motor positioning hole 1032 is formed in the motor support 1031, the motor positioning post 212 penetrates through the motor positioning hole 1032, so that the motor 103 is directly and fixedly connected with the gearbox lower cover 21, and preferably, a damping member (not shown) is further arranged between the motor positioning post 212 and the motor positioning hole 1032. The motor mounting posts 211 and the motor positioning holes 1032 are arranged in a plurality of matching, and preferably, the motor mounting posts 211 and the motor positioning holes 1032 are arranged in four matching. A through hole (not shown) is formed in the bottom surface of the transmission case lower cover 21, and when the motor 103 is directly and fixedly connected with the transmission case lower cover 21, a motor shaft 104 of the motor 103 penetrates through the through hole to be in power connection with the speed changing device and the clutch device. Therefore, when the speed changing device and the clutch device are arranged in the upper cover and the lower cover of the gearbox, the speed changing assembly is jointly formed and then fixedly connected with the motor to jointly form the power assembly, and the power assembly can be independently arranged and assembled and then installed in the host machine, so that the power assembly can output power at multiple groups of different rotating speeds in the optimal working range of the motor (under the condition that the rotating speed of the motor is not adjusted or is changed in a small range and the motor is ensured to be positioned in the optimal working rotating speed range) to meet the requirements of the food processor on the multifunctional different rotating speeds. Preferably, a sealing assembly is further arranged at the through hole to seal the inner cavity.

The speed change device comprises an input end, an output end, a first speed change module and a second speed change module, the first speed change module and the second speed change module are arranged at the input end and the output end, the first speed change module and the second speed change module are preferably arranged to be a planet wheel speed reduction system, the first speed change module and the second speed change module are sequentially arranged along the axial direction, so that the first speed change module and the second speed change module can realize power series connection on the premise of fully compressing axial space and radial space, and transmission with larger speed reduction ratio is realized. The gearbox lower cover 21 and the gearbox upper cover 22 surround to form a relatively closed cavity, the output end and the output end penetrate through the gearbox lower cover and the gearbox upper cover, preferably, the input end is arranged on the lower side and penetrates through the gearbox lower cover to be connected with motor power, and the output end is arranged on the upper side and penetrates through the gearbox upper cover to be connected with connector power and finally drive the stirring piece to rotate. Of course, the upper gearbox cover and the lower gearbox cover may also be left and right structures that are fastened to each other, or the transmission device and the clutch device are disposed in a cavity formed by a single cover body, such as the lower gearbox cover, and the upper gearbox cover only seals the cavity.

The clutch device comprises a driving module and a power transmission module, wherein the power transmission module is respectively in power connection with the motor shaft and the speed change module and respectively transmits power to different speed change devices. The driving module comprises an adjusting frame, a gear shifting fork 33, a driving gear 34 and a gear shifting motor 35. The adjusting frame is sleeved outside the speed changing module and comprises an outer frame 31 and an inner frame 32, the outer frame 31 and the inner frame 32 are mutually nested, and preferably, the outer frame 31 is arranged outside the inner frame 32. The outer frame 31 comprises an outer frame body 311, outer frame teeth 312 are arranged on the outer side wall of the outer frame body 311, and outer frame threads 313 are arranged on the inner side wall of the outer frame body 311. The outer frame teeth 312 are engaged with the driving gear 34, and when the gear shift motor 35 drives the driving gear 34 to rotate, the outer frame 31 is further driven to rotate. The inner frame 32 comprises an inner frame body 321, inner frame threads 322 are arranged on the outer side wall of the inner frame body 321, inner frame inner teeth 323 are arranged on the inner side wall of the inner frame body 321, and the outer frame 31 and the inner frame 32 are matched through the outer frame threads 313 and the inner frame threads 322. In operation, the outer frame 31 is only axially rotatable and not axially movable, and conversely, the inner frame 32 is only axially movable and not axially rotatable, such that the outer frame 31 threadably engages the inner frame 32 to axially move, thereby translating rotation of the shift motor 35 into axial movement along the transmission. The shift fork 33 is connected to the inner frame 32, and when the inner frame 32 moves in the axial direction, the shift fork 33 is driven to move in the axial direction. The shift fork 33 includes a fork post 331, a fork connecting rod 332, and a fork body 333, and the shift fork 33 is connected to the inner frame 32 through the fork post 331. The power transmission module comprises a shift head 41, and the shift fork 33 is rotatably connected with the shift head 41. When the shift motor 35 drives the inner frame 32 to move axially, the inner frame 32 can further drive the shift head 41 to move axially, and meanwhile, the shift head 41 can rotate relative to the shift fork 33, so that the driving module only needs to drive the shift head to move axially to realize the shift requirement without participating in power transmission, the functions are mutually isolated, and each module can be ensured to work under the optimal working state. The shift head 41 includes a shift head body 411, a shift head engaging groove 412, and shift head drive teeth 413. Preferably, the two shift forks 33 are oppositely disposed on both sides of the shift head 41 such that the two opposite fork bodies 333 surround a circular ring shape, and are inserted into the shift head engaging groove 412 to drive the shift head 41 to move in the axial direction and rotate relative to the shift head 41.

To achieve compression in the axial dimension, first, the drive module and the power transfer module are nested within one another such that there is axial overlap between the drive module and the power transfer module. In the present embodiment, the shift fork 33 is connected to the middle position of the shift head 41, such that the shift head 41 is nested inside the adjustment frame at an axial position, further, the axial overlapping dimension of the shift head 41 and the adjustment frame is L, the dimension L1 of the shift head 41 is set to be smaller than the dimension L2 of the adjustment frame (in this case, the axial dimension of the adjustment frame constitutes the axial dimension of the drive module), and the ratio of the shift head 41 to the adjustment frame is L/L1, wherein L/L1 is 5% or more and 100% or less, preferably, the overlapping ratio is 30% to 80%, for example, 35%, 40%, 45%, 50%, 55%, 60%, 65%, 70%, 75%, and the like.

Because the outer frame 31 and the inner frame 32 are nested with each other, and the outer frame only needs to rotate and does not need to move in the axial direction, the circumferential direction, the radial direction and the like when working, the occupied space for the whole speed changing device and the clutch device is smaller, and the outer frame is mostly in the space limited by the outer frame, therefore, the speed changing device and the clutch device can be conveniently arranged in a cavity formed by the lower cover of the gearbox and the upper cover of the gearbox, the lower cover of the gearbox and the upper cover of the gearbox are also conveniently arranged in a closed space, and only an input shaft and an output shaft which need to transmit power pass through, such as a motor shaft, an output shaft or a motor shaft of a gear shifting motor, and meanwhile, when the shafts pass through the lower cover of the gearbox or the upper cover of the gearbox, a rotary sealing structure is easy to arrange, so that the sealing effect of the cavity is good, and on the one hand, noise generated when the speed changing device and the clutch device work can be prevented from leaking out, on the other hand, lubricating oil can be conveniently arranged, so that the working environment of the speed changing device and the clutch device is better, the service lives of the speed changing device and the clutch device are prolonged, and moreover, the closed cavity can effectively prevent external impurities from entering, and the speed changing device and the clutch device are more stable and reliable in working. Meanwhile, the outer frame and the inner frame which are nested with each other are mutually overlapped in the axial direction, so that the axial size of the speed changing device and the clutch device can be compressed, the range of the speed changing device and the clutch device can not be occupied more in the axial direction, the axial size of the food processor can be reduced, and the problem that the normal operation of a user is influenced because the food processor, particularly a main machine, needs to be provided with enough height in the axial direction is avoided.

The first transmission module comprises a first planetary wheel 42, a first planet carrier 43. The first planetary gear 42 is mounted on a first carrier 43. When the shifter head 41 is moved into powered connection with the first transmission module, the shifter head drive teeth 413 are inserted into the first planet gears 42 to form the sun gear of the first transmission module, while the inner frame inner teeth 323 of the inner frame 32 form the frame of the first transmission module. In operation, the shift knob 41 drives the first planetary gear 42 to rotate, and the first planetary gear 42 simultaneously rotates in the inner frame inner teeth 323 and drives the first planet carrier 43 to rotate, so as to realize the first-stage speed reduction.

The second speed changing module comprises a second planet carrier 51, a second planet wheel 52 and a second output wheel 53. The inner side wall of the gearbox upper cover 2 is provided with upper cover inner teeth 221 so as to form a tooth frame of the second planet wheel 52. When the shift head 41 is in power connection with the first speed changing module and is in power connection with the second speed changing module through the first speed changing module, the first planet carrier 43 simultaneously constitutes a sun gear of the second speed changing module to drive the second planet gear 52 to rotate, and simultaneously performs planetary revolution in the inner teeth 221 of the upper cover, so as to drive the second planet carrier 51 and the second output wheel 53 to rotate, and realize power output. In this way, the output of the motor is transmitted to the speed changing device through the gear shifting head 41, and after two-stage speed reduction is performed by the first speed changing module and the second speed changing module, transmission with a large speed reduction ratio is realized, and preferably, the speed reduction ratio can reach 30-140 times speed change after two-stage speed reduction. When the shift head 41 is directly engaged with the second planet wheel 52, the shift head 41 skips the first transmission module and directly transmits power to the second transmission module, and the power of the motor is only changed by the second transmission module, so that a smaller transmission ratio is realized compared with the two-stage transmission, and preferably, the transmission ratio is set to be 10-20 times. Furthermore, an output module which is in power connection with the first planet carrier 42 can be further arranged, so that the power of the motor can realize speed change only through the first speed changing module, and therefore, the requirement that the output end outputs different rotating speeds can be realized through different output states of the first speed changing module, the second speed changing module and the two-stage speed changing module under the same input state.

Preferably, the food processor further comprises a high-speed output shaft 61, and the high-speed output shaft 61 can be directly in power connection with the motor through the gear shifting head 41, so that the high-speed output of the motor is realized. In this embodiment, the output end of the main machine includes a first connector 62 and a second connector 63, wherein the first connector 61 is directly connected to the high-speed output shaft 62, and the second connector 63 is connected to the second output wheel 53, so that the first connector 62 can directly output high speed, and the second connector 63 can be combined through different speed changes, thereby realizing different speed outputs on the premise that the motor input is not changed. The shift head body 411 is internally arranged in a penetrating manner and comprises a shift head first flat position 414 positioned at the lower end and a shift head second flat position 415 positioned at the upper end, the shift head 41 is in power connection with the motor shaft 104 through the shift head first flat position 414 and is in power connection with the high-speed output shaft 61 through the shift head second flat position 415, wherein the shift head first flat position 414 and the shift head second flat position 415 are arranged to be capable of realizing power connection when the shift head 41 moves axially or realizing power connection or power disconnection only when the shift head reaches a preset position.

The side wall of the inner frame 321 is further provided with an inner frame fixing notch 324, the shifting fork column 331 is arranged at the inner frame fixing notch 324, and the shifting fork column 331 is fixedly connected with the inner frame 32 through a shifting fork screw 334, so that the shifting fork 33 and the inner frame 32 are integrally arranged. Furthermore, the outer side wall of the shift head body 411 is further provided with a limiting groove 416, a limiting snap spring 417 is arranged at the limiting groove 416, and a shift bearing 418 and a bearing gasket 419 are arranged at the snap spring 417. The outer side wall of the gear shift head body 411 extends outwards to form a gear shift head limiting plate 4111, and the gear shift head limiting plate 4111 and the bearing gasket 419 jointly form the gear shift head clamping groove 412. The shift bearing 418 is disposed at the shift knob engaging groove 412, the shift knob limiting plate 4111 is provided with a limiting plate protrusion 4112, and the fork body 333 is disposed at the shift knob engaging groove 412 and is provided with a fork body protrusion 3331 extending inward in the radial direction. The shift bearing 418 includes a bearing inner ring 4181 and a bearing outer ring 4182, preferably, the stopper plate protrusion 4112 abuts against the bearing inner ring 4181, and the yoke body protrusion 3331 abuts against the bearing outer ring 4182, so that the shift head 41 and the shift fork 33 rotate relatively through the bearing, thereby reducing friction and noise between the shift head and the shift fork, and realizing more stable and reliable power transmission.

First planet carrier 43 includes first planet carrier body 431, first planet carrier erection column 432, first planet carrier driving gear 433, first planet carrier erection column 432 is located first planet carrier 431 lower surface, it is corresponding, first planet wheel 42 is equipped with first planet wheel mounting hole 421 and first planet wheel tooth 422, first planet wheel 42 passes through first planet wheel mounting hole 421 rotatable the dress in first planet carrier erection column 432, and is preferred, first planet wheel 42 sets up to three, and first planet carrier erection column 432 sets up to corresponding three. The lower surface of the first planet carrier body 431 is also provided with first planet carrier internal teeth 434 corresponding to the first planet carrier transmission teeth 433, and the first planet carrier internal teeth 434 can be meshed with the gear shifting head driving teeth 413 to realize power transmission. The first planet carrier 43 is provided with a first planet carrier through hole 435 at the center, and the first planet carrier through hole 435 can be passed by the high-speed output shaft 61.

Preferably, the outer frame 31 and the inner frame 32 are connected through a thread, and when the outer frame 31 rotates, the inner frame 32 is driven to move in the axial direction, and further the gear shifting fork 33 is driven to push the gear shifting head 41 to reach a preset position, so that clutch speed change is realized. Further, in order to better realize the transmission between the outer frame 31 and the inner frame 32 and synchronously prevent the inner frame 32 from freely moving or reversely pushing the outer frame 31 and shifting after reaching the designated position, the thread pressure angle of the inner frame thread 322 of the inner frame 32 is set to be alpha, and preferably, the thread pressure angle alpha is less than or equal to 5 degrees. Like this, can drive the inside casing when the frame is rotatory at axial displacement, and when the frame stall, can realize the auto-lock at the screw thread between frame and the inside casing, and can not reverse promotion frame and make the inside casing aversion, guarantee the speed change module at predetermined variable speed position. Of course, a pressure angle larger than the thread pressure angle can be arranged between the outer frame and the inner frame, and the preset positions of the outer frame and the inner frame are ensured by other locking modes. For example, the gear shifting motor can be used for locking the position, and further driving the driving gear and the outer frame to be locked, and finally the position stability of the inner frame and the gear shifting head is realized.

The shifting implementation of the shifting and clutching devices is described further below in conjunction with fig. 12-17.

As shown in fig. 12 and 13, the food processor is in a power transmission state in a first output state (high speed state). In this state, the motor 103 is power-connected to the shift head 41 through a motor shaft 104 (not shown). Meanwhile, the gear shifting motor 35 drives the driving gear 34 to rotate and drives the outer frame 31 to rotate so that the inner frame 32 moves axially to drive the gear shifting head 41 to be separated from the first speed changing module, at this time, the first planetary gear 42 is not in contact with the gear shifting head 41, the first speed changing module and the second speed changing module do not output power, the food processor only has the first connector 61 to rotate, and the second connector 62 does not rotate, so that high-speed output is realized. In this state, the first connecting joint 61 is directly driven by the motor, and normally operates at the rotation speed of the motor itself, which is in the range of 10000rpm to 50000 rpm. As shown in fig. 13, the power transmission diagram for the first output state is shown, the motor shaft 104 is directly power connected to the shift head 41, and the shift head 41 is not connected to the transmission module, so that power is directly connected to the output through the high speed output shaft 61. The advantages of such an arrangement are: generally speaking, the processing environment that multi-functional food preparation machine used the most is still the high-speed state, including broken wall is smashed, dry grinding is smashed, fruit juice, trash ice etc. all process under the high-speed state, consequently, directly utilize the high-speed state of motor and need not be the most efficient processing mode through speed change gear, for prior art, this application can be simple through clutch's the direct output of realization motor, and needn't add transmission with speed change gear again, guarantee machining efficiency, still can reduce speed change gear and produce vibration noise. Meanwhile, the clutch device can cut off the power connection between the motor and the speed change device when outputting at a high speed, so that the speed change device does not participate in power transmission when outputting at a high speed, thereby avoiding the idle work of speed change output generated after the speed change device participates in reducing the processing efficiency, avoiding the noise and abrasion generated by the continuous work of the speed change device when not outputting, reducing the noise when the food processor works and prolonging the normal service life of the food processor. Of course, during high speed output, the food processor may also output different rotational speeds simultaneously via the transmission to drive different sets of stirring members simultaneously to achieve multiple sets of outputs, as will be described in detail below.

As shown in fig. 14 and 15, the power transmission state of the food processor is the second output state (first deceleration mode). In this state, the gear shifting motor 35 drives the driving gear 34 to rotate, further drives the outer frame 31 to rotate so as to drive the inner frame 32 to move upward along the axial direction, the inner frame 32 further drives the gear shifting fork 33 and the gear shifting head 41 to move upward along the axial direction, and finally causes the gear shifting head driving teeth 413 to mesh with the first planetary gear 42, and further, the first planetary gear 42 meshes with the inner frame internal teeth 323. When the motor drives the shift head 41 to rotate through the motor shaft, the shift head drives the first planet wheel 42 to rotate and further revolve in the inner frame inner teeth 323, and when the first planet wheel 42 revolves, the first planet carrier 43 is driven to rotate, so that the speed reduction of the first speed changing module is realized. First planet carrier drive gear 433 further meshes with second planet wheel 52 mutually to constitute second speed change module's sun gear, first planet carrier drive gear 433 drives second planet wheel 52 rotatory, and simultaneously, second planet wheel 52 is in revolution in the upper cover internal tooth 221, and drive second planet carrier 51 and second output wheel 53 are rotatory, second output wheel 53 finally drives second connector 63 is rotatory, realizes second speed change module's speed reduction. With further reference to fig. 15, the power transmission path of the food processor is: the motor shaft 104 drives the first planet gear 41 to revolve through the shift head 41, and drives the first planet carrier 43 to rotate to realize the first-stage speed change, the first planet carrier synchronously drives the second planet gear 52 to revolve, and drives the second output wheel 53 to rotate to realize the second-stage speed change, and finally, the second output is output by the second connector 63. The advantages of such an arrangement are: when the food processor needs to output after speed change, the clutch device drives the motor to be in power connection with the speed change device, so that low-speed output of the food processor is realized, and corresponding functional requirements are met. Because the speed change device superposes the speed reduction of the first speed change module and the second speed change module, namely the product of the speed reduction ratio i1 of the first speed change module and the speed reduction ratio i2 of the second speed change module, the speed change device can realize the speed reduction with large speed reduction ratio, and the speed reduction ratio can reach 30-140 times of speed change after two-stage speed reduction. Like this, when the high rotational speed output state of motor, for example 18000rpm state, still can realize several hundred even less than a hundred rotational speed outputs, if the adjustment range of motor self is reconciled, can realize the extremely low rotational speed that is less than fifty revolutions per minute at least, such rotational speed range can satisfy processing such as upset stirring to eating the material, and can not the surface structure of broken wall edible material, more can not cut the crushing to eating the material. After the power of the motor is reduced by a large gear ratio, the corresponding multiple of the working torque is increased, for example, when the reduction ratio is 60 times, the corresponding torque is also increased by 60 times (theoretical calculation value, actual value is not completely the same due to loss), thus, the motor with high speed and low torque is converted into the output with low speed and high torque, the requirements of low-speed and high-torque working environments such as juice extrusion, dough kneading and the like are met, and the application range of the food processor is wider.

As shown in fig. 16 and 17, the power transmission state of the food processor is the third output state (second deceleration state). In this state, the gear shifting motor 35 further rotates the driving gear 34 and the outer frame 31 to drive the inner frame 32 to further move upward in the axial direction, and finally the gear shifting head driving teeth 413 are inserted into the first planet carrier internal teeth 434, so that the gear shifting head 41 can directly drive the first planet carrier 43 to rotate to jump over the first speed reduction module. Preferably, when the inner frame 32 moves upward, the first planetary gears 42 are disengaged from the inner frame inner teeth 323, so that although the shift head 413 synchronously drives the first planetary gears 42 and the first carrier 43, the first planetary gears 42 only idle and have no power output during operation because the peripheries of the first planetary gears 42 are vacant. Of course, it is also possible to provide for the shifting head drive teeth 413 to be switchable between the inner frame inner teeth 323 and the first planet gears 42, i.e. to be disengaged from the inner frame inner teeth 323 when meshing with the first planet gears 42 and to be disengaged from the first planet gears 42 when meshing with the inner frame inner teeth 323, thus ensuring that different reduction positions are realized. In this state, the motor shaft 104 is directly power-connected to the first planet carrier 43 through the shift head 41, drives the first planet carrier 43 to rotate and drive the second planet gears 52 to revolve, and is output by the second output wheel 53, and finally drives the second connector 61 to rotate and output, so as to realize the deceleration of the second transmission module. Referring to fig. 17, the power transmission route of the food processor is: the motor shaft 104 drives the first planet carrier 43 to rotate through the shift knob 41, and the first planet carrier synchronously drives the second planet gear to revolve, so that speed change is realized, and finally the speed is output by the second connector 63. The advantages of such an arrangement are: the power transmission is only reduced by the second speed changing module and not by the first speed changing module, the food processor has a middle-range speed reduction, and the output speed reduction ratio is 10-20 times. When the motor rotates at the same speed as the first speed reduction state, for example, 18000rpm, the output after speed reduction can realize the output of the rotation speed of 1000rpm-3000rpm, similarly, if the motor is combined with the self adjustment range, the adjustment within the range of 8000rpm can be realized, and the processing of functions of shredding, slicing, mincing meat and the like can be satisfied. Particularly, according to the utility model, through such arrangement, the second connector 63 can realize different rotating speed outputs under the condition that the rotating speeds of the motors are completely the same, and different connectors are not required to be replaced to realize different rotating speed outputs; similarly, the food processing machine is also suitable for meat mincing, vegetable cutting and other functions, and can realize low-speed turnover in the high-speed processing process to ensure that food materials are more uniform, thereby improving the application range of the food processing machine. Compared with the prior art, the speed reduction and clutch functions are also realized, under the condition of unchanged input, the speed can not be adjusted by the same output connector, different processing containers and connectors need to be replaced to realize different rotating speed outputs, the rotating speed in a single processing process is changed, the corresponding adjustment of the motor is still needed, the adjustment range is small, and the motor can not work under the optimal working condition. This application scheme does not change the operating condition of motor in single course of working, only relies on speed change gear and clutch to realize adjusting, can not lose the working property of motor to only rely on the structure to realize, with low costs, job stabilization is reliable. Furthermore, because speed change gear and clutch set gradually in the axial, and clutch set only embodies rotatory working method externally, need not occupy too big space in the axial for speed change gear and clutch set can be convenient install in confined cavity, have reduced noise at work promptly, have promoted speed change gear and clutch set's job stabilization nature and working life again.

Preferably, the shift head 41 and the high-speed output shaft 61 are in power connection in three working states, which is advantageous in that: the gear shifting head and the high-speed output shaft are both in a high-speed working state without passing through a speed changing device, and even under the continuous working condition, the gear shifting head does not generate large noise and structural abrasion, and has small overall influence on products. Meanwhile, the lower end of the gear shifting head is connected with the motor shaft and the upper end of the gear shifting head is connected with the high-speed output shaft in actual work, so that the two ends of the gear shifting head are positioned, and the gear shifting head is stable and reliable in work. Moreover, if frequent switching alignment is required between the shift head and the high-speed output shaft, the wear of the shift head and the high-speed output shaft is increased, and a gap is easily generated between the shift head and the high-speed output shaft, so that vibration and noise are generated in the working process. The power transmission state of the gear shifting head and the high-speed output shaft is not changed, only the relative position between the gear shifting head and the high-speed output shaft is changed, the optimal fit clearance between the gear shifting head and the high-speed output shaft can be ensured all the time, and the power transmission is stable and reliable.

It can be understood that the thread pressure angle between the outer frame and the inner frame can be set to other angles, and the food processor is further provided with a locking structure for locking the outer frame or the inner frame or the gear shifting head when the inner frame and the outer frame reach the preset position, so as to ensure that the speed changing device and the clutch device work at the preset position.

It will be appreciated that the gear shifting tooth head may also be powered off from the high speed output shaft by, for example, shifting the flat shaft when in the reduced speed state, so that no intermediate high speed output is provided when in the reduced speed state.

It can be understood that the driving module includes a driving part and a driven part, the driving part and the driven part are respectively an upper driving part and a lower driving part which are matched with each other in the axial direction, wherein the driving part can be an upper driving part or a lower driving part, the driven part can correspond to the lower driving part or the upper driving part, the upper driving part and the lower driving part have mutually matched helicoids, and then the upper driving part and the lower driving part have mutually overlapped parts in the axial direction, so that when the upper driving part or the lower driving part rotates, the driving part matched with the upper driving part can be driven to move up and down, and then the power transmission module is driven to move in the axial direction to realize clutch adjustment. The screw surfaces matched with each other between the upper driving piece and the lower driving piece can be directly arranged on the opposite end surfaces of the upper driving piece and the lower driving piece, and can also be sleeves sleeved with each other, and the opposite screw surfaces are arranged on the outer side walls of the sleeves.

It will be appreciated that the first carrier and the first carrier gearing teeth are arranged for removable power connection, and that when the shift head drive teeth are engaged with the first carrier internal teeth, the shift head is also operable to simultaneously urge the first carrier gearing teeth out of engagement with the first carrier, thereby enabling the second transmission module to operate without power input and reducing wear of the first transmission module.

It can be understood that the clutch device comprises a threaded rod which is connected with the motor and can drive the inner frame to move up and down, and the motor directly drives the inner frame to move up and down when rotating without arranging the outer frame.

It will be appreciated that the transmission may also include an output directly connected to the first transmission module to effect a reduced speed output through only the first transmission module. Of course, the final output connectors may be identical, and the same connectors may have different output speeds through the intermediate adjustment structure.

It is understood that the speed changing device and the clutch device may be directly provided on the motor to constitute a motor assembly having speed changing and clutch functions together with the motor without providing respective upper and lower covers, the motor assembly being further installed in the main body. Or the upper cover and the lower cover synchronously seal the motor assembly.

It can be understood that the stirring piece can be directly connected with the output end of the speed changing device without a connecting head, and the stirring piece can realize different functions according to different output rotating speeds; or the stirring piece is directly detachably connected with the speed change device, and different stirring pieces can be replaced according to different functions.

It is understood that the driving module may also be directly embedded in the power transmission module. For example, the power transmission module is a gear shifting head sleeved on the high-speed shaft, the driving module is a driving motor in threaded connection with the high-speed shaft, and the driving module is directly embedded in the gear shifting head and drives the gear shifting head to move axially to realize clutching.

It is understood that the driving module and the power transmission module can also be driven in a non-contact manner. For example, the power transmission module and the driving module both have magnetism, the power transmission module comprises a gear shifting head, the driving module comprises a driving piece, and the driving piece drives the gear shifting head to move by means of magnetism so as to realize clutch transmission.

It can be understood that the food processor further comprises a detection device for detecting the position of the clutch device and a control device for controlling the clutch device to move, and the control device controls the clutch device to reach a preset clutch position according to a processing program, so that a corresponding speed reduction function is realized or the speed is not reduced, and accordingly, the corresponding food processing is realized.

Example two.

As a second embodiment of the multifunctional food processor of the present invention, as shown in fig. 18-22, compared to the first embodiment, the speed changing device further comprises a third speed changing module. It should be noted that, the description of the first specific embodiment and the second specific embodiment respectively does not mean that the solutions of the two specific embodiments are completely independent of each other, but merely to embody the two preferred technical solutions, and the technical features and the technical solutions of the two specific embodiments are common and can be referred to each other.

In this embodiment, as shown in fig. 18 to 22, the food processor includes a speed changing device, a clutch device, an upper cover 25, a fixed gear frame 26, and a lower cover 27, the upper cover 25 is provided with an upper cover fixing hole 251, the fixed gear frame 26 is provided with a gear frame inner tooth 261 and a fixed gear frame fixing hole 262, the lower cover 27 is provided with a lower cover fixing hole 271, and the upper cover 25, the fixed gear frame 26, and the lower cover 27 are fixedly connected by a fixing bolt 28 and form a relatively closed cavity therein. The transmission and the clutch device are at least largely disposed within the cavity.

The speed change device comprises an input end, an output end, and a first speed change module, a second speed change module and a third speed change module which are arranged between the input end and the output end. The input end comprises a high-speed output shaft 61 connected with a motor shaft of the motor, and the high-speed output shaft 61 is provided with a first driving tooth 611. The output end comprises a first connector 62 directly connected with the high-speed output shaft 61 and a second connector 63 connected with the third speed changing module.

The first speed changing module comprises a first fixed gear frame 711, a first planet gear 712, a first planet carrier 713 and first planet carrier teeth 714 arranged on the upper surface of the first planet carrier 713, first planet carrier outer teeth 7131 are further arranged on the periphery of the first planet carrier 713, and the first fixed gear frame 711 is fixedly connected with the fixed gear frame 26 and the lower cover 27. Wherein, first fixed ring gear 711 is equipped with fixed tooth frame 7111, fixed tooth frame post 7112, fixed ring gear mounting hole 7113, fixed ring gear internal tooth 7114, fixing bolt 28 passes through fixed ring gear mounting hole 7113 with fixed ring gear 26 and lower cover 27 fixed connection, first planet gear 712 with first drive tooth 611 meshes mutually and realizes power transmission, first planet gear 712 is in step the revolution in the fixed ring gear internal tooth 7114. The second speed changing module comprises a second planet wheel 721, a second planet carrier 722 and a second planet carrier tooth 723 arranged on the upper surface of the second planet carrier 722. The second planetary gear 721 is engaged with the first planetary gear 714 and realizes power transmission. The third speed changing module comprises a third planet wheel 731 and a third planet carrier 732, wherein the third planet wheel 731 is meshed with the second planet carrier tooth 723 and realizes power transmission.

The clutch module comprises a shifting fork 81, a spring 82, a mandril 83 and a movable gear frame 84. The shifting fork 81 comprises a shifting fork body 811, a shifting fork column 812 and a shifting fork frame 813, wherein the shifting fork column 812 is arranged on the outer side of the shifting fork body 811, the shifting fork frame 813 and the movable toothed frame 84 are arranged in a cavity formed by the upper cover and the lower cover, the shifting fork frame 813 is connected with the movable toothed frame 84 and can drive the movable toothed frame 84 to move up and down in the axial direction, preferably, the shifting fork 81 is arranged into two, and the two sides of the movable toothed frame 84 are opposite to each other. One end of the spring 82 is abutted against the fixed-gear frame column 7112, and the other end of the spring is abutted against the shifting fork 81 and the ejector rod 83, so that when the ejector rod 83 presses the spring 82, the spring 82 is extruded downwards and synchronously drives the shifting fork 81 to move downwards, and when the acting force of the ejector rod 83 disappears, the spring 82 reversely pushes the shifting fork 81 to reset. Preferably, the spring 82 and the ram 83 pass through the fork column 812 to be movably connected with the fork. The inner side wall of the movable gear frame 84 is provided with movable inner teeth 841, and the inner teeth 841 can be meshed with the second planet gears 721 and the first planet carrier 713. The clutch module still includes the activity location structure, the activity location structure including set up in the activity rim of tooth fixed slot 842 of activity rim of tooth 84 lateral wall, and set up in the fixed muscle 263 of rim of tooth of fixed rim of tooth 26 inside wall, work as when activity rim of tooth 84 rebound, activity rim of tooth fixed slot 842 with the fixed muscle 263 of rim of tooth is pegged graft mutually, and is right in the whole body activity rim of tooth 84 carries on spacingly, prevents activity rim of tooth 84 is rotatory in circumference, at this moment, activity rim of tooth 84 constitutes the outer frame of second planet wheel 721, second planet wheel 721 can the revolution in the activity rim of tooth 84. When the movable carrier 84 moves downward, the movable carrier fixing groove 842 is disengaged from the carrier fixing rib 263, and the movable carrier 84 is engaged with the second planet gears 721 and the first carrier 713 at the same time, in this state, when the first carrier 713 rotates, although the first carrier teeth 714 are engaged with the second planet gears 721, since the first carrier 713 and the second planet gears 721 are locked by the movable carrier 84 in synchronization, the first carrier 713, the second planet gears 721 and the movable carrier 84 constitute a synchronously moving component, and rotate synchronously with the first carrier 713, and synchronously drive the second planet carrier to rotate synchronously, so that the second transmission module loses the transmission function and only has the power transmission effect.

Teeth and tooth grooves which are mutually inserted and matched are further arranged between the shifting fork 81 and the movable toothed frame 84, preferably, the teeth are shifting fork teeth 814 arranged on the shifting fork 81, and the shifting fork teeth 814 are arranged on the lower side of the shifting fork body 811 and are in a bent L shape. The outer peripheral side of the movable gear frame 84 is provided with a movable tooth groove 843 matched with the shifting fork teeth 814, and the movable tooth groove 843 is annularly arranged along the outer peripheral side of the movable gear frame 84. The rake tines 841 are inserted into the movable gullets 843. When the shifting fork 81 moves axially, the shifting fork 814 and the shifting tooth groove 843 push the shifting tooth frame 84 to move axially. When the movable carrier 84 reaches the clutch position, the shifting fork 814 is not circumferentially associated with the movable spline 843, for example, when the movable carrier 84 is engaged with the second planet wheel 721 and the first planet carrier 713 at the same time, the movable carrier 84 can rotate relative to the shifting fork 81 without being affected by the shifting fork 814 and the movable spline 843.

The following describes in detail the implementation of the speed changing device and the clutch device of the food processor according to the present invention with reference to fig. 19-22. Preferably, the high-speed output shaft 61 is directly power-connected with the motor and directly connected with the first connecting head 62, while the high speed of the motor is directly output by the first connecting head 62, and during the operation, the first connecting head 62 continuously outputs the high-speed operation.

Fig. 19 is a sectional view of a first transmission structure for a food processor according to the present invention. In the first state, the high-speed output shaft 61 and the first driving tooth 611 are directly driven by the motor, the first driving tooth 611 drives the first planet gear 712 to rotate and synchronously revolve in the first fixed gear frame 711, and the first planet gear 712 drives the first carrier 713 to rotate to realize first-stage speed reduction when revolving; the first planet carrier tooth 714 drives the second planet gear 721 to rotate and synchronously revolve in the movable gear frame 84 during the rotation process of the first planet carrier 713, and the second planet gear 721 drives the second planet carrier 722 to rotate during the revolution to realize the second-stage speed reduction; in the process that the second planet carrier 723 rotates along with the second planet carrier 722, the third planet gear 731 is driven to rotate and synchronously revolve in the fixed gear frame 26, the third planet gear 731 drives the third planet carrier 732 to rotate so as to realize third-stage speed reduction when revolving, and the third planet carrier 732 is connected with the second connector 63 and finally drives the stirring piece. Preferably, a bearing 733 is further disposed between the third planet carrier 732 and the upper cover 25. Compared with the first embodiment, the arrangement has the advantages that the third speed changing module is further added, so that the speed reducing performance of the speed changing device can be further improved, and the speed reducing ratio of the speed changing device is higher; the reduction ratio of each stage of changing module can be reduced, the volume of each stage of speed reduction simulation is reduced on the premise that the total reduction ratio is unchanged, and then the volumes, particularly the axial sizes, of the whole speed changing device and the clutch device are reduced, so that the volume of the food processing machine is reduced, and the user satisfaction is improved.

As shown in fig. 20, 21 and 22, the food processor of the present invention is a sectional view of a second transmission structure for speed changing state. In the second state, the push rod 83 moves downward to press the spring 82 and drive the shift fork 81 to move downward, and the shift fork 81 drives the movable gear frame 84 to move downward, so that the second planet gears 721 and the first planet carrier 713 are simultaneously engaged with the movable internal teeth 841. Thus, when the motor drives the high-speed output shaft 61 to rotate, the first driving tooth 611 drives the first planet gear 712 to rotate and revolve synchronously in the first fixed gear frame 711, and the first planet gear 712 drives the first planet carrier 713 to rotate when revolving to realize the first-stage speed reduction; because the first planet carrier 713, the second planet wheel 721 and the movable internal tooth 841 are engaged at the same time, the first planet carrier 713, the second planet wheel 721 and the movable gear frame 84 together form a rotating component, and the second planet carrier 722 is driven to rotate by the second planet wheel 721, that is, the second speed change module does not participate in speed reduction any more, and the output of the first speed change module directly drives the third speed change module; second planet carrier tooth 723 drives along with second planet carrier 722 rotation in-process third planet gear 731 is rotatory and synchronous revolution in fixed frame 26, drive during the revolution of third planet gear 731 third planet carrier 732 is rotatory in order to realize third level speed reduction, third planet carrier 732 with the second connector is connected, and final drive stirring piece to realize same connector, under the single output rotational speed state of motor, have different rotational speed outputs. The advantages of such an arrangement are: compared with the first embodiment, the clutch structure is changed from a sun gear structure for adjusting the planetary gear teeth to a gear frame structure for adjusting the planetary gear teeth, the sun gear structure adjustment scheme needs to change the transmission position of the central sun gear, and each stage of speed change module needs to have a space with a center for the change position of the sun gear.

The first embodiment and the second embodiment adopt two adjustment schemes to realize a clutch transmission scheme.

The first embodiment is as follows: through the sun gear position that changes planetary gear train, through the input of the wheel train of directly changing at different levels to can skip corresponding speed change module, thereby can more directly realize different rotational speed outputs, structural adjustment is simple, and, usually, when the sun gear adjustment at the preceding stage, the rotational speed is higher, directly adjusts by the sun gear, the loss of avoiding high rotational speed that can be better, transmission efficiency is higher, adjusts more in a flexible way.

Example two: through changing the tooth frame position of the planetary gear train, a fixed component is formed between the upper and lower planetary gears and the planetary frame, so that the corresponding planetary gears, the planetary frame and the tooth frame jointly form a rotating part and no longer have a speed reduction function, and finally, clutch variable speed output is realized. The gear frame adjustment can be arranged on the periphery of the whole planetary gear train and sleeved on the periphery of each stage of planetary gear train, so that the arrangement of corresponding adjusting components in the center of the planetary gear train can be reduced, and corresponding clutch modules can be arranged according to the number of different planetary gear trains, thereby realizing various variable speed combination states.

It can be understood that the fixed gear frame is provided with a notch for the shifting fork to move axially; furthermore, a sealing piece used for shielding and closing the notch can be arranged at the notch.

It can be understood that the driving module for driving the ejector rod may be a driving motor, and the driving motor drives the screw rod to move axially and drives the ejector rod to move axially.

It can be understood that the clutch device includes a driving rod in threaded connection with the shifting fork, the driving rod drives the shifting fork to move up and down when rotating, and the driving rod is driven by a driving motor to rotate.

It can be understood that the transmission device can also be provided with only a first speed changing module and a second speed changing module, and the movable gear rack can be arranged on the periphery of the second planet gear and the first planet carrier, so that the second speed changing module forms a fixed component without a speed reducing function, and further, a clutch speed changing function is realized.

It will be appreciated that the drive module for driving the ram 82 may also extend directly into the main unit and be self-regulated by the user to set the desired output speed according to the user's environment.

It will be appreciated that a clutch device may be provided between the high speed output shaft 61 and the first connection joint 62, and when the speed change output is realized, the high speed output shaft 61 is disconnected from the first connection joint 62, and the high speed output is not continued.

It is understood that the movable gear rack may also be disposed at the outer edges of the second planet carrier and the third planet gear to fix the second planet carrier and the third planet gear, so as to realize a third speed change state.

It can be understood that the movable gear frame can be set into two groups and is respectively matched with the first planet wheel, the second planet wheel, the third planet wheel and the third planet carrier, so that the combined mode that the second-stage speed reduction is fixed, the third-stage speed reduction is fixed and the second-stage and third-stage speed reduction are fixed is realized, and the second output connector has a plurality of groups of different output schemes.

It can be understood that the planetary gear trains adopted by the first speed changing module and the second speed changing module are used for considering that the food processor generally needs a larger speed reducing ratio without particularly large torque output, and the planetary gear trains can better meet the requirement of high speed reducing ratio. Of course, the first speed changing module and the second speed changing module may be set to be a conventional gear reduction structure, and a gear combination with a changed gear structure is set to realize speed changing clutching, which is also within the protection scope of the present application and will not be described herein again.

It is to be understood that the first fixed frame 711 may be directly integrated with the lower cover 27, so that the fixed frame inner teeth are directly provided on the lower cover 27, and the first planetary gear may be engaged with the fixed frame inner teeth and revolve.

It can be understood that first fixed frame also with fixed frame sets up as an organic whole, the internal tooth that first planet wheel and third planet wheel all can fix the frame meshes mutually, and with the internal tooth that first planet wheel, third planet wheel mesh mutually can be the same or inequality.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, i.e. all equivalent variations and modifications made by the present invention are covered by the scope of the claims of the present invention, which is not limited by the examples herein.

Claims (10)

1. A multifunctional food processing machine comprises a host machine, a processing cup and a motor, wherein the motor is arranged in the host machine, a stirring piece driven by the motor is arranged in the processing cup, and the multifunctional food processing machine is characterized by further comprising a speed change device and a clutch device, the speed change device comprises an input end, an output end, a first speed change module and a second speed change module, the first speed change module and the second speed change module are positioned between the input end and the output end, the clutch device is connected with the speed change device and drives the input end to be in power connection or disconnection between the first speed change module and the second speed change module, the clutch device comprises a driving module and a power transmission module, the driving module and the power transmission module are nested so that the driving module and the power transmission module are overlapped in the axial direction, and the overlapping proportion range of the driving module and the power transmission module is 5% -100%, the output end outputs different rotating speeds and drives the stirring piece.

2. The food processor as claimed in claim 1, wherein the first speed changing module and the second speed changing module are sequentially arranged along the axial direction, and the driving module comprises a driving member and a driven member, the driving member is rotatably arranged to drive the driven member to move along the axial direction, so that the driving module drives the power transmission module to move axially to connect or disconnect the input end with or from the first speed changing module or the second speed changing module.

3. The food processor as claimed in claim 2, wherein the driving member and the driven member are respectively an outer frame and an inner frame which are nested, the outer frame is rotatably disposed and drives the inner frame to move axially, the power transmission module comprises a shift head rotatably connected with the inner frame, the inner frame axially limits the shift head to drive the shift head to move axially, one end of the shift head is in power connection with the input end, and the other end of the shift head is in power connection with or disconnection from the first speed changing module or the second speed changing module during axial movement.

4. The food processor of claim 3, wherein the output includes a first connector and a second connector, the first connector being in power communication with the shift head, the second connector being in power communication with the second variable speed module.

5. The food processor as defined in claim 3, wherein the inner frame includes a cabinet and a frame, the shift head is disposed on the frame, and the shift head is rotatably coupled to the frame via a bearing.

6. The food processor as claimed in claim 3, wherein the driving module further comprises a driving motor, the outer side wall of the outer frame is provided with external teeth, the driving motor drives the outer frame to rotate through the external teeth, the outer frame is connected with the inner frame through threads, and the outer frame drives the inner frame to move axially when rotating.

7. The food processor as claimed in claim 2, wherein the driving member and the driven member have mutually engaged spiral surfaces, the driving member is rotatably disposed and drives the driven member to move axially, the power transmission module includes a shift head rotatably connected to the driven member, the driven member axially limits the shift head to drive the shift head to move axially, one end of the shift head is in power connection with the input end, and the other end of the shift head is in power connection with or disconnection from the first speed changing module or the second speed changing module during axial movement.

8. The food processor as defined in claim 2, wherein the driving module comprises a push rod and an elastic member, the power transmission module comprises a shift frame, the push rod and the elastic member are connected with the shift frame and disposed outside the shift frame, and the push rod and the elastic member can push the shift frame to move axially to connect or disconnect with the first speed changing module or the second speed changing module.

9. The food processor of claim 1, wherein the first gear change module includes a first planetary gear train, the second gear change module includes a second planetary gear train, the first planetary gear train and the second planetary gear train being axially arranged in sequence, the first planetary gear train including a first planet gear, a first planet carrier and a first planet carrier, the second planetary gear train including a second planet gear, a second planet carrier and a second planet carrier, and the clutch arrangement including an axially movable shift head that is axially movable to engage or disengage the first planet gear, the second planet gear, respectively, to dynamically engage or disengage the first planetary gear train or the second planetary gear train.

10. The food processor of claim 1, wherein the first gear change module comprises a first planetary gear train and the second gear change module comprises a second planetary gear train, the first planetary gear train and the second planetary gear train being arranged in an axial sequence, the first planetary gear train comprising a first planet gear, a first planet carrier and a first planet carrier, the second planetary gear train comprising a second planet gear, a second planet carrier and a second planet carrier, and the clutch device comprising a movable carrier that moves in an axial direction to form or is positioned between the first planet carrier of the first planetary gear train or the second planet carrier of the second planetary gear train to simultaneously engage the first planet carrier and the second planet gear.

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