CN215305260U - Food preparation machine with stable transmission - Google Patents

Abstract

The utility model discloses a food processor with stable transmission, which belongs to the field of food processors and comprises a main machine and a crushing cup, wherein a motor is arranged in the main machine, a crushing knife is arranged in the crushing cup, and a transmission device is arranged between a motor shaft and the crushing knife. The transmission device comprises a planetary gear mechanism, the planetary gear mechanism comprises a shell, a sun gear, a planetary carrier and an output shaft, the sun gear is driven by a motor shaft, the planetary gear is meshed with the sun gear, the planetary carrier is driven by the planetary gear to rotate, the output shaft is connected to the planetary carrier and matched with the crushing cutter at the top end, the planetary gear comprises a first gear part and a second gear part which are concentrically arranged from top to bottom, the first gear part is meshed with the sun gear, and an inner gear ring meshed with the second gear part is arranged inside the shell. When the sun wheel drives the planet wheel to rotate, the second gear part is meshed with the inner gear ring, and the transmission stability is ensured. When the outer diameter of the second gear portion is smaller than the outer diameter of the first gear portion, the radial dimension of the ring gear is reduced, and the radial dimension of the planetary gear mechanism is also reduced.

Description

Food preparation machine with stable transmission

Technical Field

The utility model relates to the field of food processing machines, in particular to a food processing machine with stable transmission.

Background

The existing food processor generally comprises a main machine and a crushing assembly, wherein the crushing assembly comprises a crushing cup, a crushing cutter and a motor, and when the machine body works, the motor drives the crushing cutter to rotate at a high speed to cut and crush materials in the crushing cup, so that the purpose of processing food is realized. In order to obtain a large output torque, a gear reduction structure is usually arranged between the motor and the crushing cutter, and the gear reduction structure is used for realizing reduction transmission so that the crushing cutter obtains a proper rotating speed and torque. However, when the reduction ratio of the gear reduction structure is large, the radial size of the gear reduction structure is large, the torque transmission distance is long, the swing amplitude during transmission is large, the transmission stability is not guaranteed, and the overall dimension of the whole machine is not reduced reasonably.

SUMMERY OF THE UTILITY MODEL

In order to solve the defects in the prior art, the utility model provides the food processor with stable transmission, which can reasonably reduce the external dimension of the planetary gear mechanism while ensuring stable transmission.

In order to achieve the technical purpose, the food processing machine with stable transmission comprises a main machine and a crushing cup, wherein a motor is arranged in the main machine, a crushing knife driven by the motor is arranged in the crushing cup, a transmission device is arranged between a motor shaft of the motor and the crushing knife, the transmission device comprises a planetary gear mechanism, the planetary gear mechanism comprises a shell, a sun gear, a planet carrier and an output shaft, the sun gear is arranged in the shell and driven by the motor shaft, the planet gear is arranged in the shell and meshed with the sun gear, the planet carrier is arranged in the shell and driven by the planet gear to rotate, the output shaft is connected to the planet carrier, the top end of the output shaft is matched with the crushing knife, the planet gear comprises a first gear part and a second gear part which are concentrically arranged up and down, the first gear part is meshed with the sun gear, and an inner gear ring meshed with the second gear part is arranged in the shell.

Furthermore, the second gear part is arranged at the bottom of the first gear part, and the outer diameter of the second gear part is smaller than that of the first gear part.

Furthermore, the shell is internally provided with a groove positioned on the periphery of the sun gear, and the inner gear ring is arranged on the annular groove wall of the groove.

Further, planetary gear mechanism is including locating the gear shaft in the shell, and the gear shaft is erect and is put and the top is connected in the planet carrier, and the planet wheel cover is located on the gear shaft, the bottom and the planet carrier fixed connection of output shaft.

Furthermore, the shell comprises an upper shell and a lower shell which are fixed together, the inner gear ring is arranged on the inner wall of the lower shell, and the upper shell is provided with a shaft hole for the output shaft to extend out of the shell.

Furthermore, a positioning matching structure is arranged between the upper shell and the lower shell; and/or the upper shell and the lower shell are fixed together through a fastener.

Further, smash the cup and include the cup, locate the cup of cup bottom and be used for the bowl cover that the lid closed the cup, in planetary gear mechanism located the cup, planetary gear mechanism still includes the rotatable input shaft that locates on the shell and can with motor shaft transmission fit, on the input shaft was located to the sun gear cover, transmission still including locating the detachable transmission structure between input shaft and the motor shaft.

Further, the crushing knife is fixed at the top end of the output shaft; or the crushing cutter comprises a cutter shaft and a cutter group arranged on the cutter shaft, and the transmission device further comprises a detachable transmission structure arranged between the cutter shaft and the output shaft.

Furthermore, a circumferential positioning structure is arranged between the planetary gear mechanism and the cup seat; and/or the planetary gear mechanism is connected to the cup holder through a fastener.

Furthermore, planetary gear mechanism locates in the host computer, and in the top of motor shaft stretched into the shell, the top of motor shaft was located to the sun gear cover, smashed the sword and included the arbor and locate the epaxial blade of arbor, and transmission still includes the detachable transmission structure who locates between output shaft and the arbor.

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

1. the food processor improves the structure of a planetary gear mechanism, wherein a planetary gear of the planetary gear mechanism comprises two gear parts which are concentrically arranged up and down, a first gear part is meshed with a sun gear, and a second gear part is meshed with an inner gear ring. When the sun gear drives the planet gear to rotate through the first gear part, the second gear part is always meshed with the inner gear ring, so that the transmission stability of the planetary gear mechanism is guaranteed, and the stability of the output shaft of the planetary gear mechanism driving the crushing cutter to rotate is improved. Because the inner gear ring is only meshed with the second gear part, when the outer diameter of the second gear part is smaller than that of the first gear part, the radial size of the inner gear ring can be correspondingly reduced, the radial size of the planetary gear mechanism can be reasonably reduced, and interference on other structures of a machine body is avoided.

2. The second gear part is located the bottom of first gear part, rationally sets up the position relation between first gear part and the second gear part, is favorable to rationally reducing planetary gear mechanism's axial dimension, also is favorable to reducing the structure degree of difficulty of ring gear. The outer diameter of the second gear part is smaller than that of the first gear part, and the reasonable reduction of the radial size of the inner gear ring is facilitated.

3. The inner gear ring is arranged on the annular groove wall of the groove positioned on the periphery of the sun wheel, and the arrangement position of the inner gear ring is reasonably arranged, so that the structural requirement that the planet wheel can revolve around the sun wheel by being meshed with the second gear part of the planet wheel is met.

4. The top of gear shaft is connected in the planet carrier, the bottom and the planet carrier fixed connection of output shaft, and the planet carrier drives the planet carrier through the gear shaft and rotates when the planet wheel rotates, and the planet carrier drives the output shaft and rotates, rationally sets up the cooperation structure between planet wheel and the planet carrier and the cooperation structure between planet carrier and the output shaft, satisfies the transmission requirement.

5. The inner gear ring is arranged on the inner wall of the lower shell, the upper shell is provided with a shaft hole for the output shaft to extend out, the structure of the shell is reasonably arranged, the inner gear ring and the lower shell are integrally arranged together, and the reasonable reduction of the components of the planetary gear mechanism is facilitated, so that the production cost is reduced and the assembly efficiency is improved.

6. Go up and set up the location cooperation structure between casing and the lower casing, prevent through the location cooperation structure that relative rotation or relative aversion take place for casing or lower casing at planetary gear mechanism during operation, improve the positional stability of each component of planetary gear mechanism, be favorable to improving transmission stability.

7. When the planetary gear mechanism is arranged in the cup holder, the motor shaft drives the input shaft to rotate through the detachable transmission structure when the machine body works, and the input shaft drives the crushing cutter to rotate through the sun gear, the planet carrier and the output shaft so that the food processing purpose can be realized.

8. When the planetary gear mechanism is arranged in the cup holder, the crushing cutter can be directly fixed at the top end of the output shaft, and the output shaft directly drives the crushing cutter to synchronously rotate. When the crushing cutter adopts a detachable structure, a detachable transmission structure is arranged between the cutter shaft and the output shaft, and the output shaft starts the crushing cutter to rotate through the detachable transmission structure.

9. When the planetary gear mechanism is arranged on the cup base, the circumferential positioning structure arranged between the planetary gear mechanism and the cup base is favorable for improving the circumferential stability of the planetary gear mechanism, so that the transmission stability is favorably improved. The planetary gear mechanism is connected to the cup base through the fastener, and the fixing mode between the planetary gear mechanism and the cup base is reasonably arranged, so that the fixing requirement is met, and meanwhile, the assembly is facilitated.

10. When the planetary gear mechanism is arranged in the host, the top end of the motor shaft extends into the shell to be used as an input shaft of the planetary gear mechanism. When the motor works, the motor shaft directly drives the sun gear to rotate, and the planetary gear mechanism drives the crushing cutter to rotate through the detachable transmission structure so as to achieve the purpose of food processing.

Drawings

FIG. 1 is a schematic view of a food processor according to an embodiment;

FIG. 2 is a schematic view of the planetary gear mechanism of a food processor according to an embodiment;

FIG. 3 is a schematic view of a portion of a planetary gear mechanism of a food processor according to an embodiment;

FIG. 4 is an exploded view of the planetary gear mechanism of a food processor according to an embodiment;

FIG. 5 is an exploded view of a comminuting knife in a food processor according to an embodiment;

FIG. 6 is a schematic view showing the engagement of the planetary gear mechanism in a food processor according to an embodiment;

FIG. 7 is an exploded view of the planetary gear mechanism and cup holder of a food processor according to an embodiment;

FIG. 8 is a schematic view showing the engagement of the planetary gear mechanism and the crushing blade in the food processor according to the second embodiment;

FIG. 9 is a schematic diagram of the planetary gear mechanism and the crushing blade of the three food processors according to the embodiment.

In the figure, 100-main machine, 200-grinding cup, 210-cup body, 220-cup seat, 221-positioning groove, 222-fixing column, 230-cup cover, 231-positioning hole, 300-motor, 310-motor shaft, 400-grinding knife, 410-knife shaft, 411-positioning column, 420-lower knife group, 430-upper knife group, 440-slice and shred knife group, 450-blade, 500-planetary gear mechanism, 510-shell, 511-upper shell, 512-lower shell, 513-boss, 514-groove, 515-boss, 516-shaft hole, 517-convex rib, 518-step surface, 519-lug, 5120-notch, 5121-through hole, 5122-connecting hole, 5123-convex edge, 5124-connecting column, 520-sun wheel, 530-planet wheel, 531-first gear part, 532-second gear part, 540-planet carrier, 550-output shaft, 560-ring gear, 570-input shaft, 580-gear shaft, 610-first detachable transmission structure, 611-upper transmission joint, 612-lower transmission joint, 620-second detachable transmission structure, 621-transmission head, 622-transmission hole, 630-third detachable transmission structure, 631-upper transmission head, 632-lower transmission head.

Detailed Description

The utility model is further described with reference to the following figures and specific examples. It is to be understood that the following terms "upper," "lower," "left," "right," "longitudinal," "lateral," "inner," "outer," "vertical," "horizontal," "top," "bottom," and the like are used merely to indicate an orientation or positional relationship relative to one another as illustrated in the drawings, merely to facilitate describing and simplifying the utility model, and are not intended to indicate or imply that the device/component so referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore are not to be considered limiting of the utility model.

Example one

As shown in fig. 1 to 7, a food processor with stable transmission according to an embodiment of the present invention includes a main body 100 and a crushing cup 200, wherein a motor 300 is disposed in the main body 100, a crushing blade 400 driven by the motor 300 is disposed in the crushing cup 200, and a transmission device is disposed between a motor shaft 310 of the motor 300 and the crushing blade 400. The transmission device comprises a planetary gear mechanism 500, the planetary gear mechanism 500 comprises a shell 510, a sun gear 520, a planet gear 530, a planet carrier 540 and an output shaft 550, the sun gear 520 is arranged in the shell 510 and is driven by a motor shaft 310, the planet gear 530 is arranged in the shell 510 and is meshed with the sun gear 520, the planet carrier 540 is arranged in the shell 510 and is driven to rotate by the planet gear 530, and the output shaft 550 is connected with the planet carrier 540 and the top end of the output shaft is matched with the crushing cutter 400. The planet gear 530 includes a first gear portion 531 and a second gear portion 532 concentrically arranged up and down, the first gear portion 531 is engaged with the sun gear 520, and an inner gear 560 engaged with the second gear portion 532 is provided inside the housing 510.

When the sun gear drives the planet gear to rotate through the first gear part, the second gear part is always meshed with the inner gear ring, so that the transmission stability of the planetary gear mechanism is guaranteed, and the stability of the output shaft of the planetary gear mechanism driving the crushing cutter to rotate is improved. Because the inner gear ring is only meshed with the second gear part, when the outer diameter of the second gear part is smaller than that of the first gear part, the radial size of the inner gear ring can be correspondingly reduced, the radial size of the planetary gear mechanism can be reasonably reduced, and interference on other structures of a machine body is avoided.

In this embodiment, the second gear portion 532 is disposed at the bottom of the first gear portion 531, and the outer diameter of the second gear portion 532 is smaller than the outer diameter of the first gear portion 531. Since the radial dimension of the second gear portion 532 is reduced, it is advantageous to reduce the radial dimension of the ring gear 560 reasonably, thereby facilitating reduction of the radial dimension of the planetary gear mechanism 500.

In this embodiment, the pulverizing cup 200 is detachably disposed on the main unit 100, the pulverizing cup 200 includes a cup body 210, a cup holder 220 disposed at the bottom end of the cup body 210, and a cup cover 230 for covering the cup body 210, and the planetary gear mechanism 500 is disposed in the cup holder 220.

The planetary gear mechanism 500 further includes an input shaft 570 rotatably disposed on the housing 510 and adapted to be in transmission with the motor shaft 310, the sun gear 520 is sleeved on the input shaft 570, and the transmission device further includes a first detachable transmission structure 610 disposed between the input shaft 570 and the motor shaft 310. Specifically, the housing 510 includes an upper housing 511 and a lower housing 512 fixed together, a hollow boss 513 is disposed at the center of the lower housing 512, and the input shaft 570 is rotatably disposed in the boss 513 through a bearing. The top end of the input shaft 570 extends upwards to form the boss 513, and the sun gear 520 is sleeved on the top end of the input shaft 570. The bottom end of the input shaft 570 extends downward to form the boss 513, the first detachable transmission structure 610 includes an upper transmission joint 611 sleeved at the bottom end of the input shaft 570 and a lower transmission joint 612 sleeved at the top end of the motor shaft 310, and the upper transmission joint 611 and the lower transmission joint 612 can be plugged and matched to realize power transmission between the motor shaft 310 and the input shaft 570.

The lower shell 512 is provided with a ring-shaped groove 514 positioned on the periphery of the boss 513, the groove 514 is also positioned on the periphery of the sun gear 520, and the inner gear ring 560 is arranged on the ring-shaped groove wall of the groove 514. Preferably, the inner gear ring 560 is integrally formed with the lower housing 512, which is beneficial to reasonably reducing the number of components of the planetary gear mechanism 500, thereby being beneficial to improving the assembly efficiency and reducing the production cost. In this embodiment, three planetary gears 530 are provided and are uniformly spaced along the circumferential direction of the sun gear 520, the second gear portions 532 of the planetary gears 530 are located in the concave grooves 514 and are engaged with the ring gear 560, and the first gear portions 531 are located higher than the concave grooves 514.

The planet carrier 540 is disposed on the top of the planet wheel 530, the planetary gear mechanism 500 further includes a gear shaft 580 disposed in the housing 510, the gear shaft 580 is vertically disposed and is disposed in one-to-one correspondence with the planet wheel 530, the top end of the gear shaft 580 is fixedly connected with the planet carrier 540, and the planet wheel 530 is sleeved on the corresponding gear shaft 580. The center of the planet carrier 540 is provided with a jack matched with the output shaft 550, the bottom end of the output shaft 550 is inserted into the jack and fixedly connected with the planet carrier 540, and the planet carrier 530 drives the output shaft 550 to rotate through the planet carrier 540 when rotating to realize power output.

The center of the upper shell 511 is provided with a convex column 515 protruding upwards, the convex column 515 is provided with a shaft hole 516 for the output shaft 550 to extend out of the shell 510, the output shaft 550 is rotatably inserted into the convex column 515 through a bearing, and the top end of the output shaft 550 extends out of the convex column 515 upwards.

Referring to fig. 5, the crushing cutter 400 includes a cutter shaft 410 and a cutter set detachably sleeved on the cutter shaft 410, and the cutter shaft 410 is detachably disposed in the crushing cup 200. In order to realize the purpose that the planetary gear mechanism 500 drives the crushing cutter 400, a second detachable transmission structure 620 is arranged between the output shaft 550 and the cutter shaft 410, the second detachable transmission structure 620 comprises a transmission head 621 sleeved on the top end of the output shaft 550 and a transmission hole 622 arranged at the bottom of the cutter shaft 410, the transmission head 621 and the transmission hole 622 preferably adopt spline type matching structures, and the output shaft 550 can drive the cutter shaft 410 to synchronously rotate through the matching of the transmission head 621 and the transmission hole 622. In this embodiment, the knife group includes a lower knife group 420, an upper knife group 430 and a slicing and shredding knife group 440, the three knife groups are detachably sleeved on the knife shaft 410, the knife shaft 410 is provided with three transmission parts which are vertically arranged and are matched with the knife groups in a one-to-one correspondence manner, the upper knife group 430 and the lower knife group 420 can cut and crush materials, and the slicing and shredding knife group 440 can slice or shred the materials.

In order to improve the rotation stability of the crushing cutter 400, a positioning column 411 is disposed at the top end of the cutter shaft 410, and a positioning hole 231 for inserting the positioning column 411 is disposed on the cup cover 230. When the machine body works, the positioning column 411 is inserted into the positioning hole 231 to improve the rotation stability of the crushing cutter 400.

In order to improve the position stability of each component of the planetary gear mechanism 500, a positioning and matching structure is arranged between the upper shell 511 and the lower shell 512. Referring to fig. 6, a circle of ribs 517 is disposed on the bottom surface of the upper housing 511, and a circle of step surfaces 518 matched with the ribs 517 is disposed on the upper end of the inner wall of the lower housing 512. A plurality of lugs 519 which are uniformly distributed along the circumferential direction and protrude outwards are arranged on the circumferential outer wall of the upper shell 511, and notches 5120 matched with the lugs 519 are arranged on the top side of the lower shell 512. When the upper shell 511 and the lower shell 512 are fixed together, the convex rib 517 is inserted into the lower shell 512 and is abutted against the step surface 518, the lug 519 is located at the notch 5120, the upper shell and the lower shell are positioned in the radial direction through the matching of the convex rib 517 and the inner wall of the lower shell 512, the upper shell and the lower shell are positioned in the axial direction through the abutment of the convex rib 517 and the step surface 518, the upper shell and the lower shell are positioned in the circumferential direction through the matching of the lug 519 and the notch 5120, and the upper shell and the lower shell are prevented from rotating or shifting relatively when the planetary gear mechanism works through a positioning matching structure, so that the position stability of each component of the planetary gear mechanism is improved, and the improvement of the transmission stability is facilitated.

In this embodiment, the upper housing 511 and the lower housing 512 are fixed together by a fastener. Specifically, the upper shell 511 and the lower shell 512 are fixed together by screws, through holes 5121 for screws to pass through are formed in the lugs 519 of the upper shell 511, connecting holes 5122 for screws to be screwed into are formed in the bottom wall of the notch 5120, and the screws for connecting the upper shell 511 and the lower shell 512 pass through the through holes 5121 and are screwed into the connecting holes 5122.

In order to improve the overall stability of the planetary gear mechanism 500, a circumferential positioning structure is provided between the planetary gear mechanism 500 and the cup holder 220. With reference to fig. 7, a plurality of protruding edges 5123 circumferentially spaced from each other are disposed on the circumferential outer wall of the lower housing 512, a positioning groove 221 engaged with the protruding edges 5123 is disposed on the cup body 210, and the planetary gear mechanism 500 and the cup holder 220 are circumferentially positioned by engagement of the protruding edges 5123 and the positioning groove 221. In addition, a hollow connecting column 5124 is arranged at the convex edge 5123, a fixing column 222 matched with the connecting column 5124 is arranged on the cup base 220, and the connecting column 5124 is inserted into the fixing column 222, so that the planetary gear mechanism 500 and the cup base 220 are circumferentially positioned with each other.

In this embodiment, the planetary gear mechanism 500 is coupled to the cup holder 220 by a fastener. Specifically, the planetary gear mechanism 500 is connected to the cup holder 220 by screws. The connecting column 5124 is provided with a hole for a screw to pass through, the fixing column 222 is provided with a fixing hole for a screw to be screwed in, the screw for connecting the planetary gear mechanism 500 and the cup holder 220 passes through the connecting column 5124 and is screwed in the fixing column 222, and the planetary gear mechanism 500 is fixed in the cup holder 220.

When the machine body works, the crushing cup 200 is placed on the main machine 100, the input shaft 570 of the planetary gear mechanism 500 is in transmission connection with the motor shaft 310 through the first detachable transmission structure 610, and the crushing knife 400 is in transmission connection with the output shaft 550 of the planetary gear mechanism 500 through the second detachable transmission structure 620. After the motor 300 is started, the motor shaft 310 drives the input shaft 570 to rotate through the first detachable transmission structure 610, the input shaft 570 drives the output shaft 550 to rotate through the sun gear 520, the planet gear 530 and the planet carrier 540, and the output shaft 550 drives the crushing cutter 400 to rotate through the second detachable transmission structure 620, so that the food processing purpose is realized.

It is understood that the ring gear 560 and the lower case 512 may be separately formed, and the ring gear 560 formed separately is fixed to the annular groove wall of the recess 514 in the lower case 512.

It should be understood that the number of the planetary gears 530 is not limited to three as described above and shown in the drawings, and may be two, four, or other reasonable numbers.

It is understood that the transmission head 621 and the transmission hole 622 may also adopt other non-circular matching structures to realize power transmission, such as a triangular matching structure, a rectangular matching structure, and the like.

It is understood that the upper housing 511 and the lower housing 512 may be fixedly connected by other means, such as a snap-fit structure, adhesive-sealing, etc.

It should be understood that the specific structure of the positioning and matching structure between the upper housing 511 and the lower housing 512 is not limited to the above description and shown in the drawings, and other reasonable positioning structures may be adopted to meet the positioning requirement.

It can be understood that the specific structure of the circumferential positioning structure between the planetary gear mechanism 500 and the cup holder 220 is not limited to the above description and shown in the drawings, and other reasonable circumferential positioning structures can be adopted to meet the circumferential positioning requirement.

It is understood that the planetary gear mechanism 500 and the cup holder 220 may be fixedly connected in other manners.

It will be appreciated that the number and specific functions of the groups are not limited to those described above and shown in the drawings, and that other suitable numbers, one, two, etc., may be used.

It is understood that the second gear part 532 may be disposed on the top of the first gear part 531, and the disposition position of the ring gear 560 is changed accordingly.

Example two

Referring to fig. 8, when the planetary gear mechanism 500 is installed in the cup holder 220, the crushing blade 400 having a blade structure is directly fixed to the tip of the output shaft 550.

The other structures of the second embodiment are the same as those of the first embodiment, and are not described in detail here.

EXAMPLE III

Referring to fig. 9, in the present embodiment, the planetary gear mechanism 500 is disposed in the main unit 100, at this time, the input shaft 570 of the planetary gear mechanism 500 is eliminated, the top end of the motor shaft 310 extends into the housing 510 to directly serve as the input shaft 570, the first detachable transmission structure 610 formed by the first upper transmission joint 611 and the first lower transmission joint 612 is eliminated, and the sun gear 520 is directly sleeved on the top end of the motor shaft 310.

In order to realize the transmission between the output shaft 550 and the crushing cutter 400, the transmission device further comprises a third detachable transmission structure 630 arranged between the output shaft 550 and the crushing cutter 400. Specifically, the crushing cutter 400 includes a cutter shaft 410 and a blade 450 fixed to the top end of the cutter shaft 410, and the third detachable transmission structure 630 includes an upper transmission head 631 sleeved on the bottom end of the cutter shaft 410 and a lower transmission head 632 sleeved on the top end of the output shaft 550.

When the machine body works, the crushing cup 200 is placed on the main machine 100, and the upper transmission head 631 is in transmission connection with the lower transmission head 632. After the motor 300 is started, the motor shaft 310 drives the output shaft 550 to rotate through the sun gear 520, the planet gear 530 and the planet carrier 540, and the output shaft 550 drives the crushing knife 400 to rotate through the third detachable transmission structure 630 to achieve the purpose of food processing.

The other structures of the third embodiment are the same as those of the first embodiment, and are not described in detail here.

Other embodiments of the present invention than the preferred embodiments described above, and those skilled in the art can make various changes and modifications according to the present invention without departing from the spirit of the present invention, should fall within the scope of the present invention defined in the claims.

Claims (10)

1. The utility model provides a food preparation machine that transmission is stable, includes the host computer and smashes the cup, is equipped with the motor in the host computer, is equipped with by motor drive's crushing sword in smashing the cup, is equipped with transmission between the motor shaft of motor and the crushing sword, a serial communication port, transmission includes planetary gear mechanism, planetary gear mechanism includes shell, sun gear, planet wheel, planet carrier and output shaft, sun gear locates in the shell and by the motor shaft drive, the planet wheel is located in the shell and meshes with sun gear, the planet carrier is located and is driven rotatoryly by the planet wheel in the shell, output shaft connection is in planet carrier and top and crushing sword cooperation, the planet wheel includes first gear portion and the second gear portion that upper and lower concentric setting, first gear portion and sun gear meshing, the inside of shell is equipped with the ring gear with second gear portion meshing.

2. The food processor of claim 1, wherein the second gear portion is disposed at a bottom portion of the first gear portion, the second gear portion having an outer diameter less than an outer diameter of the first gear portion.

3. The food processor of claim 1, wherein the housing has a recess in the interior thereof at the periphery of the sun gear, and the ring gear is disposed on a circumferential groove wall of the recess.

4. The food processor of claim 1, wherein the planetary gear mechanism includes a gear shaft disposed within the housing, the gear shaft being vertically disposed and having a top end connected to the planet carrier, the planet gear being mounted on the gear shaft, and a bottom end of the output shaft being fixedly connected to the planet carrier.

5. The food processor of claim 1, wherein the housing includes an upper housing and a lower housing secured together, the ring gear being disposed on an inner wall of the lower housing, the upper housing being provided with a shaft hole for the output shaft to extend out of the housing.

6. The food processor of claim 5, wherein a locating engagement is provided between the upper housing and the lower housing; and/or the upper shell and the lower shell are fixed together through a fastener.

7. The food processor of claim 1, wherein the grinding cup includes a cup body, a cup base disposed at a bottom end of the cup body, and a cup cover for covering the cup body, the planetary gear mechanism is disposed in the cup base, the planetary gear mechanism further includes an input shaft rotatably disposed on the housing and adapted to be in driving engagement with the motor shaft, the sun gear is sleeved on the input shaft, and the transmission device further includes a detachable transmission structure disposed between the input shaft and the motor shaft.

8. The food processor of claim 7, wherein the shredding knife is secured to a top end of the output shaft; or the crushing cutter comprises a cutter shaft and a cutter group arranged on the cutter shaft, and the transmission device further comprises a detachable transmission structure arranged between the cutter shaft and the output shaft.

9. The food processor of claim 7, wherein a circumferential locating structure is provided between the planetary gear mechanism and the cup holder; and/or the planetary gear mechanism is connected to the cup holder through a fastener.

10. The food processor as defined in claim 1, wherein the planetary gear mechanism is disposed in the main body, a top end of the motor shaft extends into the housing, the sun gear is sleeved on the top end of the motor shaft, the crushing cutter includes a cutter shaft and a blade disposed on the cutter shaft, and the transmission device further includes a detachable transmission structure disposed between the output shaft and the cutter shaft.

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