Food processor convenient to use

Abstract

The utility model discloses a food processor convenient to use, and relates to the field of life electric appliances, the food processor comprises a main machine and a cup body assembly, a motor and a reduction gearbox are arranged in the main machine, the reduction gearbox comprises a rotatable inner gear ring, a sun gear, a planet gear and a connector, the sun gear, the planet gear and the connector are arranged in the inner gear ring, and a one-way bearing is arranged between the connector and a motor shaft. The main machine is further provided with a limiting structure capable of limiting rotation stopping of the inner gear ring, the limiting structure comprises a bolt and a limiting motor, the limiting motor can drive the bolt and the inner gear ring to be locked or disengaged, and when the limiting motor is in the locking state, a motor shaft rotates relative to the one-way bearing so as to drive the connector to rotate relative to the one-way bearing. When the motor is in the disengaged state, the motor shaft and the one-way bearing rotate synchronously to drive the connector to rotate synchronously, operation of the whole machine is more intelligent, locking or disengagement of the limiting structure and the inner gear ring can be achieved without manual adjustment, and the use experience of a user is improved.

Description

Technical Field

[0001] This utility model relates to the field of household appliance technology, specifically to a user-friendly food processing machine. Background Technology

[0002] Existing food processors typically include a main unit with a built-in motor and a detachable cup assembly located on top of the main unit. When using the food processor, the user places the ingredients into the cup, and the motor drives the mixing components inside the cup to rotate to process the ingredients. However, users may process different types of ingredients. For example, when making soy milk, a higher speed and lower torque are required for the mixing components. Similarly, when kneading dough or grinding flour, a higher torque and lower speed are required. However, most existing food processors can only process one type of ingredient. Users need to purchase additional models to process different types of ingredients. To solve this problem, Chinese utility model patent CN201220563868.9 discloses a cooking mixer that uses a gearbox and multiple one-way bearings between the motor shaft and the connector to output different speeds and torques when the motor rotates forward and backward. However, because this model uses multiple one-way bearings, the requirements for the one-way bearings are particularly high when the machine needs to output higher torque, which can easily cause damage to the one-way bearings. This also makes the overall structure of the machine more complex, especially increasing the axial dimension of the machine, resulting in a higher center of gravity. During the food processing process, the machine will generate significant vibration and noise, and may even tip over, seriously affecting the user experience. Utility Model Content

[0003] The purpose of this utility model is to provide a convenient food processing machine to solve the problem that existing food processing machines with multiple one-way bearings in the main unit cannot increase the output of greater torque when they are used to achieve forward and reverse rotation output of different speeds, and the center of gravity of the whole machine is too high, which makes it easy to generate vibration and noise during food processing.

[0004] To achieve the above objectives, this utility model provides a user-friendly food processing machine, including a main unit and a detachable cup assembly located above the main unit. The main unit contains a motor and a gearbox connected to the motor for transmission. The gearbox includes a rotatable internal gear ring, a sun gear located on the internal gear ring and fixed to the motor shaft, planetary gears meshing between the sun gear and the internal gear ring, and a connector connected to the planetary gears. The motor shaft is connected to the connector for transmission, and a one-way bearing is provided between the connector and the motor shaft. The main unit also includes a limiting structure for preventing and limiting the rotation of the internal gear ring. The limiting structure includes a pin and a limiting motor. The limiting motor can drive the pin to lock or disengage from the internal gear ring. In the locked state, the motor shaft rotates relative to the one-way bearing to drive the connector to rotate relative to it; in the disengaged state, the motor shaft and the one-way bearing rotate synchronously to drive the connector to rotate synchronously.

[0005] This application incorporates a reduction gearbox connected to the motor drive within the main unit. This allows the motor's high output speed to be reduced by the gearbox before being output to the mixing component, significantly increasing the torque output of the mixing component. This enables the processing of difficult-to-mix ingredients, such as dough kneading and grinding, meeting user needs. Simultaneously, the main unit also features a limiting structure that prevents the internal gear ring from rotating. The limiting motor drives a pin to lock or disengage from the internal gear ring. In the locked state, the motor shaft rotates relative to the one-way bearing, causing the connector to rotate relative to it. In the disengaged state, the motor shaft and the one-way bearing rotate synchronously, causing the connector to rotate synchronously. Specifically, when the pin and internal gear ring are locked, the pin prevents the internal gear ring from rotating, and the motor shaft drives the sun gear to rotate. Due to the prevention of rotation of the internal gear ring, the speed of the sun gear is reduced by the planetary gears and output to the connector. Furthermore, the motor shaft can rotate relative to the connector with the aid of the one-way bearing, thus achieving a high torque, low speed output from the connector, meeting user needs. This invention addresses user requirements for food processing, such as kneading and grinding. When the pin and internal gear ring are disengaged, and the motor shaft drives the sun gear to rotate in the opposite direction, the limiting structure does not limit the internal gear ring. Therefore, the sun gear drives the planetary gears and the internal gear ring to rotate at the same speed and in the same direction. All components rotate at the same speed as the motor shaft. Furthermore, the one-way bearing is locked to the motor shaft, so the motor shaft also synchronously drives the connector to rotate at the same speed and in the same direction via the one-way bearing. This achieves low torque and high speed output to meet user requirements for food grinding, thus realizing a multi-functional machine. This eliminates the need to purchase two different models to adapt to different food processing needs, improving the user experience. Compared to existing methods that use multiple one-way bearings to achieve torque variation in the connector, this application relies on planetary gears to achieve a larger reduction ratio and greater torque output. The limiting structure provides more stable and reliable operation, reducing the use of one-way bearings and improving the reliability of torque transmission. Furthermore, the change of the connecting head direction and torque can be achieved through only a limiting structure and a one-way bearing, making the structure simpler and more reliable. This helps to improve the compactness of the overall structure, especially by reducing the axial dimension of the machine. This avoids the problem of the machine's center of gravity being too high due to excessive axial height, which could cause vibration or even tipping during food processing, thus improving the stability of food processing and making it easier for users to store the machine.

[0006] Furthermore, by setting the limiting structure to include a pin and a limiting motor, the limiting motor can drive the pin to lock or disengage from the anti-rotation rib. Simultaneously, in conjunction with the forward and reverse rotation of the motor, the direction of the connector and the change of torque can be realized, making the operation of the whole machine more intelligent. The locking or disengagement of the limiting structure and the internal gear ring can be realized without manual adjustment, improving the user experience.

[0007] In a preferred embodiment of a user-friendly food processing machine, a linkage component is provided between the limit motor and the pin. The linkage component can move with the rotation shaft of the limit motor and drive the pin to reciprocate.

[0008] By providing a linkage component between the limit motor and the pin, and having the linkage component move with the shaft of the limit motor and drive the pin to reciprocate, the shaft of the limit motor can drive the linkage component to move when it rotates. Then, the linkage component drives the pin to reciprocate, thereby locking or disengaging the pin from the anti-rotation rib. This avoids the situation where the shaft of the limit motor cannot reciprocate, preventing it from directly driving the pin to reciprocate.

[0009] In a preferred embodiment of a user-friendly food processing machine, the linkage assembly includes a cam mounted on a rotating shaft and a spring sleeved on the outside of a pin. The cam abuts against the end of the pin away from the internal gear ring, and the spring can drive the pin to reset and disengage from the internal gear ring.

[0010] By configuring the linkage component to include a cam mounted on the rotating shaft and a spring sleeved on the outside of the pin, with the cam abutting the end of the pin away from the internal gear ring, the rotating shaft can synchronously drive the cam to rotate when rotating. When low speed and high torque output are required, the rotating shaft drives the cam to rotate until the cam's convex part abuts the pin, thereby driving the pin to move towards the internal gear ring and stopping its rotation. At this time, the spring is in a compressed state. When high speed and low torque output are required, the rotating shaft drives the cam to rotate until the cam's concave part abuts the pin. Under the action of the spring force, the pin moves towards the side away from the internal gear ring, thereby disengaging from the internal gear ring. The entire operation process is simple and reliable, ensuring the stability of the entire machine's operation.

[0011] In a preferred embodiment of a user-friendly food processing machine, the pin sidewall is provided with an outwardly extending baffle, and the limiting structure also includes a stop block located near the internal gear ring. The stop block is provided with a clearance hole for the pin to pass through, and one end of the spring abuts against the stop block and the other end abuts against the baffle.

[0012] By providing an outwardly extending baffle on the side wall of the pin, the limiting structure also includes a stop block located near the internal gear ring. The stop block has a clearance hole for the pin to pass through. One end of the spring abuts against the stop block, and the other end abuts against the baffle, so that the spring can be compressed and reset by the stop block and the stop plate, ensuring the driving effect of the spring on the pin.

[0013] In a preferred embodiment of a convenient food processing machine, the limiting structure further includes a stop rib. The cam is provided with a first protrusion and a second protrusion that cooperate with the stop rib. The cam rotates and drives the pin to lock with the internal gear ring. The first protrusion abuts against the stop rib. The cam rotates and the pin disengages from the internal gear ring. The second protrusion abuts against the anti-rotation rib.

[0014] By configuring the limiting structure to include a stop rib, and providing a first protrusion and a second protrusion on the cam that cooperate with the stop rib, when the cam rotates and drives the pin to move, the first protrusion abuts against the stop rib when the pin moves to lock with the internal gear ring. This prevents the pin from resetting and disengaging from the internal gear ring due to continued cam movement, thus avoiding its failure to prevent rotation of the internal gear ring. Furthermore, the increased resistance when the first protrusion abuts against the stop rib allows for detection of the cam position by detecting the stall current, thereby stopping the limiting motor from rotating further. When the pin disengages from the internal gear ring, the second protrusion abuts against the stop rib. This prevents the pin from moving towards the internal gear ring and locking with it due to continued cam rotation. Additionally, detecting the stall current allows for detection of the cam position, further improving the overall reliability of the limiting structure.

[0015] In a preferred embodiment of a user-friendly food processing machine, the linkage assembly includes a gear disposed on a rotating shaft and a rack disposed on a pin and meshing with the gear. The limit motor has a first rotation direction and a second rotation direction. In the first rotation direction, the gear drives the pin to lock with the inner gear ring; in the second rotation direction, the gear drives the pin to disengage from the inner gear ring.

[0016] By setting the linkage component to include a gear on the rotating shaft and a rack on the pin that meshes with the gear, the limit motor can drive the pin through the meshing of the gear and rack when it rotates, thereby locking or disengaging the pin from the internal gear ring. This greatly simplifies the structure of the linkage component, eliminating the need for additional structural components to achieve linkage between the limit motor and the pin. The structure is simple and the operation is reliable.

[0017] In a preferred embodiment of a user-friendly food processing machine, the limiting structure further includes a fixing bracket for positioning the pin, the fixing bracket having a positioning hole through which the pin passes.

[0018] By setting a fixed frame with a positioning hole for the pin to pass through, the fixed frame can position the pin, ensuring the stability of the pin's position. At the same time, the positioning hole can guide the pin, ensuring the smooth reciprocating movement of the pin and preventing it from deviating during movement, which would prevent it from stopping the rotation of the internal gear ring, thus further improving the stability of the pin's operation.

[0019] In a preferred embodiment of a user-friendly food processing machine, the stop structure is a stop rib that extends outward and vertically from the outer side wall of the inner gear ring.

[0020] By setting the anti-rotation structure as a stop rib extending outward and vertically on the outer side wall of the internal gear ring, the pin can abut or separate from the stop rib during movement to lock or disengage from the internal gear ring, ensuring the stability of the engagement between the two. At the same time, it simplifies the forming of the stop structure, making the structure simpler and reducing the need for modification of the original internal gear ring, which helps to reduce production costs.

[0021] In a preferred embodiment of a user-friendly food processing machine, the outer wall of the internal gear ring is provided with a concave anti-rotation groove, and a baffle rib is disposed within the anti-rotation groove; or,

[0022] Multiple retaining ribs are provided and are spaced apart circumferentially along the outer wall of the inner gear ring.

[0023] By providing a concave anti-rotation groove on the outer wall of the internal gear ring, and placing a retaining rib within the anti-rotation groove, the following advantages are achieved: First, the pin can be inserted into the anti-rotation groove during reciprocating motion. The retaining rib then engages with the pin as the internal gear ring rotates, thereby preventing and limiting the rotation of the internal gear ring. Simultaneously, the pin engages with the anti-rotation groove in the axial direction, thus limiting the axial position of the internal gear ring and ensuring its stability, further improving its reliability. Second, the retaining rib is concealed, preventing it from protruding from the outer surface of the internal gear ring, which would result in a larger overall radial dimension and greater space requirements, thus contributing to a more compact overall structure.

[0024] By providing multiple retaining ribs spaced circumferentially along the outer wall of the inner gear ring, when the pin needs to lock with the inner gear ring, the pin can selectively engage with one of the retaining ribs, increasing the probability of engagement between the retaining rib and the pin. This shortens the rotation time of the inner gear ring and improves the working efficiency of the food processing machine. Attached Figure Description

[0025] The accompanying drawings, which are included to provide a further understanding of the present invention and constitute a part of this invention, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0026] Figure 1 This is a cross-sectional view of a food processing machine according to one embodiment of the present invention;

[0027] Figure 2 This is a schematic diagram of the structure of the motor and gearbox, etc., in one embodiment of the present invention;

[0028] Figure 3 for Figure 2 Enlarged view of section A in the middle;

[0029] Figure 4This is a cross-sectional view of the motor and gearbox and other components when the pin locks with the internal gear ring in one embodiment of the present invention.

[0030] Figure 5 for Figure 2 Enlarged view of section B;

[0031] Figure 6 This is a cross-sectional view of the motor and gearbox and other components when the pin is disengaged from the internal gear ring in one embodiment of this utility model.

[0032] Figure 7 for Figure 6 Enlarged view of section C;

[0033] Figure 8 This is a schematic diagram of the internal gear ring in one embodiment of the present invention;

[0034] Figure 9 This is a schematic diagram of the cam structure in one embodiment of the present invention;

[0035] Figure 10 This is a schematic diagram of the structure of the fixing frame in one embodiment of the present invention.

[0036] List of components and reference numerals:

[0037] 1-Cup body assembly; 2-Main unit; 3-Motor, 31-Motor shaft; 4-Reduction gearbox, 41-Planetary gear, 42-Sun gear, 43-Internal gear ring, 431-Anti-rotation groove, 432-Stop rib, 44-One-way bearing; 5-Limiting structure, 51-Limiting motor, 52-Pin, 521-Baffle, 53-Cam, 531-First protrusion, 532-Second protrusion, 54-Fixing bracket, 541-Stop rib, 542-Positioning hole, 55-Spring, 56-Stop block; 6-Connector. Detailed Implementation

[0038] To more clearly illustrate the overall concept of this utility model, a detailed description will be provided below with reference to the accompanying drawings.

[0039] It should be noted that many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0040] like Figures 1 to 10As shown, this utility model provides a convenient food processing machine, including a main unit 2 and a detachable cup assembly 1 located above the main unit 2. The main unit 2 contains a motor 3 and a gearbox 4 connected to the motor 3. The gearbox 4 includes a rotatable internal gear ring 43, a sun gear 42 located on the internal gear ring 43 and fixed to the motor shaft 31 of the motor 3, planet gears 41 meshing between the sun gear 42 and the internal gear ring 43, and a connector 6 connected to the planet gears 41. The motor shaft 31 is connected to the connector 6, and a one-way bearing 44 is provided between the connector 6 and the motor shaft 31. The main unit 2 also has a limiting structure 5 that can limit the rotation of the internal gear ring 43. The limiting structure 5 includes a pin 52 and a limiting motor 51. The limiting motor 51 can drive the pin 52 to lock or disengage from the internal gear ring 43. In the locked state, the motor shaft 31 rotates relative to the one-way bearing 44 to drive the connector 6 to rotate relative to it; in the disengaged state, the motor shaft 31 and the one-way bearing 44 rotate synchronously to drive the connector 6 to rotate synchronously.

[0041] This application incorporates a reduction gearbox 4 connected to the motor 3 within the main unit 2. This allows the motor 3 to output a faster rotational speed, which is then reduced by the reduction gearbox 4 before being output to the mixing component. This significantly increases the torque output by the mixing component, enabling it to process ingredients that are difficult to mix, such as dough and grinding, thus meeting the user's needs. Meanwhile, the main unit 2 is also equipped with a limiting structure 5 that can stop the rotation of the internal gear ring 43. The limiting motor 51 can drive the pin 52 to lock or disengage from the internal gear ring 43. In the locked state, the motor shaft 31 rotates relative to the one-way bearing 44 to drive the connector 6 to rotate relative to it. In the disengaged state, the motor shaft 31 and the one-way bearing 44 rotate synchronously to drive the connector 6 to rotate synchronously. That is, when the pin 52 and the internal gear ring 43 are in the locked state, the pin 52 stops the rotation of the internal gear ring 43, and the motor shaft 31 drives the sun gear 42 to rotate. Due to the stop of the rotation of the internal gear ring 43, the speed of the sun gear 42 is reduced by the planetary gear 41 and then output to the connector 6. At this time, the motor shaft 31 can rotate relative to the connector 6 with the help of the one-way bearing 44, thereby achieving a large torque and low speed of the connector 6. The output speed meets the user's requirements for ingredients such as kneading and grinding. When the pin 52 is disengaged from the internal gear ring 43, and the motor shaft 31 drives the sun gear 42 to rotate in the opposite direction, since the limiting structure 5 does not limit the internal gear ring 43, the sun gear 42 drives the planetary gear 41 and the internal gear ring 43 to rotate at the same speed and in the same direction. The rotation speed of each component is the same as that of the motor shaft 31. At this time, the one-way bearing 44 is locked to the motor shaft 31, so the motor shaft 31 also drives the connector 6 to rotate at the same speed and in the same direction through the one-way bearing 44, achieving low torque and high speed output to meet the user's processing requirements for crushing ingredients. This realizes the function of one machine for multiple uses, eliminating the need to purchase two different models to adapt to different ingredient processing needs and improving the user experience. At the same time, compared with the existing method of using multiple one-way bearings 44 to achieve the output torque change of the connector 6, this application relies on the planetary gear 41 to achieve a larger reduction ratio and a larger torque output, and uses the limiting structure 5 for limiting, which is more stable and reliable, reduces the use of one-way bearings, and improves the reliability of torque transmission. Furthermore, the rotation and torque of the connector 6 can be changed using only a limiting structure 5 and a one-way bearing 44. The structure is simpler and more reliable, which helps to improve the compactness of the whole machine structure. In particular, it can reduce the axial dimension of the whole machine, avoid the whole machine's axial height being too high, which would cause the center of gravity of the whole machine to be too high, making it easy to vibrate or even tip over during food processing, thus improving the stability of food processing and making it easier for users to store the machine.

[0042] Furthermore, by setting the limiting structure 5 to include a pin 52 and a limiting motor 51, the limiting motor 51 can drive the pin 52 to lock or disengage from the anti-rotation rib 432. At the same time, in conjunction with the forward and reverse rotation of the motor 3, the direction of the connector 6 and the change of torque can be realized. The operation of the whole machine is more intelligent. The locking or disengagement of the limiting structure 5 and the internal gear ring 43 can be realized without manual adjustment, thus improving the user experience.

[0043] As a preferred embodiment of this application, such as Figure 2 , Figure 3 As shown, a linkage component is provided between the limit motor 51 and the pin 52. The linkage component can move with the rotating shaft of the limit motor 51 and drive the pin 52 to move back and forth.

[0044] By providing a linkage component between the limit motor 51 and the pin 52, and the linkage component moving with the shaft of the limit motor 51 and driving the pin 52 to reciprocate, the shaft of the limit motor 51 can drive the linkage component to move when it rotates, and then the linkage component drives the pin 52 to reciprocate, so as to lock or disengage the pin 52 from the anti-rotation rib 432, and avoid the situation where the shaft of the limit motor 51 cannot reciprocate, thus preventing it from directly driving the pin 52 to reciprocate.

[0045] It should be noted that this application does not specifically limit the structure of the linkage component, which can be any of the following embodiments:

[0046] Example 1: As Figures 3 to 7 As shown, in this embodiment, the linkage component includes a cam 53 mounted on the rotating shaft and a spring 55 sleeved on the outside of the pin 52. The cam 53 abuts against the end of the pin 52 away from the internal gear ring 43, and the spring 55 can drive the pin 52 to reset so as to disengage from the internal gear ring 43.

[0047] By configuring the linkage component to include a cam 53 mounted on the rotating shaft and a spring 55 sleeved on the outside of the pin 52, with the cam 53 abutting against the end of the pin 52 away from the internal gear ring 43, the rotating shaft can synchronously drive the cam 53 to rotate when rotating. When low speed and high torque output are required, the rotating shaft drives the cam 53 to rotate until the convex part of the cam 53 abuts against the pin 52, thereby driving the pin 52 to move towards the internal gear ring 43 and stopping the rotation of the internal gear ring 43. At this time, the spring 55 is in a compressed state. When high speed and low torque output are required, the rotating shaft drives the cam 53 to rotate until the concave part of the cam 53 abuts against the pin 52. Under the elastic force of the spring 55, the pin 52 moves towards the side away from the internal gear ring 43, thereby disengaging from the internal gear ring 43. The entire operation process is simple and reliable, ensuring the stability of the entire machine operation.

[0048] Furthermore, such as Figure 3 , Figure 5As shown, the side wall of the pin 52 is provided with an outwardly extending baffle 521, and the limiting structure 5 also includes a stop block 56 located near the internal gear ring 43. The stop block 56 is provided with a clearance hole for the pin 52 to pass through. One end of the spring 55 abuts against the stop block 56, and the other end abuts against the baffle 521.

[0049] By providing an outwardly extending baffle 521 on the side wall of the pin 52, the limiting structure 5 also includes a stop block 56 located near the internal gear ring 43. The stop block 56 has a clearance hole for the pin 52 to pass through. One end of the spring 55 abuts against the stop block 56 and the other end abuts against the baffle 521, so that the spring 55 can be compressed and reset by the stop of the stop block 56 and the baffle 521, ensuring the driving effect of the spring 55 on the pin 52.

[0050] As a preferred embodiment, such as Figure 5 , Figure 7 , Figure 9 As shown, the limiting structure 5 also includes a stop rib 541. The cam 53 is provided with a first protrusion 531 and a second protrusion 532 that cooperate with the stop rib 541. The cam 53 rotates and drives the pin 52 to lock with the internal gear ring 43. The first protrusion 531 abuts against the stop rib 541. The cam 53 rotates and the pin 52 disengages from the internal gear ring 43. The second protrusion 532 abuts against the anti-rotation rib 432.

[0051] By configuring the limiting structure 5 to also include a stop rib 541, and providing the cam 53 with a first protrusion 531 and a second protrusion 532 that cooperate with the stop rib 541, when the cam 53 rotates and drives the pin 52 to move, when the pin 52 moves to lock with the internal gear ring 43, the first protrusion 531 abuts against the stop rib 541. This prevents the pin 52 from resetting and disengaging from the internal gear ring 43 due to the cam 53 continuing to move, thus avoiding its failure to prevent rotation of the internal gear ring 43. On the other hand, it also ensures that the first protrusion 531 and the stop rib 541 can engage. When the rib 541 abuts, the increased resistance allows for the detection of the position of the cam 53 by detecting the stall current, thereby stopping the limit motor 51 from rotating further. When the pin 52 moves to disengage from the internal gear ring 43, the second protrusion 532 abuts against the stop rib 541. This prevents the pin 52 from moving towards the internal gear ring 43 and locking with it as the cam 53 continues to rotate. Furthermore, the detection of the position of the cam 53 by detecting the stall current helps to further improve the overall reliability of the limit structure 5.

[0052] Example 2: In this example, the linkage component includes a gear on the rotating shaft and a rack on the pin 52 that meshes with the gear. The limit motor 51 has a first rotation direction and a second rotation direction. In the first rotation direction, the gear drives the pin 52 to lock with the internal gear ring 43; in the second rotation direction, the gear drives the pin 52 to disengage from the internal gear ring 43.

[0053] By setting the linkage component to include a gear on the rotating shaft and a rack on the pin 52 that meshes with the gear, the limit motor 51 can drive the pin 52 through the meshing of the gear and rack when it rotates, thereby locking or disengaging the pin 52 from the internal gear ring 43. This greatly simplifies the structure of the linkage component, eliminating the need for additional structural components to achieve the linkage between the limit motor 51 and the pin 52. The structure is simple and the operation is reliable.

[0054] As a preferred embodiment of this application, such as Figure 10 As shown, the limiting structure 5 also includes a fixing bracket 54 for positioning the pin 52, and the fixing bracket 54 is provided with a positioning hole 542 for the pin 52 to pass through.

[0055] By setting a fixing frame 54 with a positioning hole 542 for the pin 52 to pass through, the fixing frame 54 can position the pin 52, ensuring the stability of the pin 52's position. At the same time, the positioning hole 542 can guide the pin 52, ensuring the smooth reciprocating movement of the pin 52 and preventing it from deviating during movement, thus preventing it from failing to stop the rotation of the internal gear ring 43, and further improving the working stability of the pin 52.

[0056] In a preferred embodiment of this application, the outer wall of the internal gear ring 43 is provided with a stop structure that cooperates with the stop of the limiting structure 5.

[0057] It should be noted that this application does not specifically limit the stop structure. As a preferred embodiment of this application, as shown in the figure, the stop structure is a stop rib 432 that is provided on the outer side wall of the inner gear ring 43 and extends outward and vertically.

[0058] By setting the anti-rotation structure as a baffle 432 that extends outward and vertically on the outer side wall of the inner gear ring 43, the pin 52 can abut or separate from the baffle 432 during movement to lock or disengage from the inner gear ring 43, ensuring the stability of the two engagement. At the same time, it simplifies the forming of the stop structure, making the structure simpler and reducing the need for modification of the original inner gear ring 43, which helps to reduce production costs.

[0059] Furthermore, such as Figure 8 As shown, the outer wall of the internal gear ring 43 is provided with a concave anti-rotation groove 431, and the baffle 432 is provided in the anti-rotation groove 431.

[0060] By providing a recessed anti-rotation groove 431 on the outer wall of the internal gear ring 43, and placing a retaining rib 432 within the anti-rotation groove 431, on the one hand, the pin 52 can be inserted into the anti-rotation groove 431 during reciprocating motion. The retaining rib 432 abuts against the pin 52 during the rotation of the internal gear ring 43, thereby achieving anti-rotation and limiting of the internal gear ring 43. While achieving anti-rotation, the pin 52 can also achieve axial limiting with the anti-rotation groove 431, thereby achieving axial limiting of the internal gear ring 43, ensuring the stability of the axial position of the internal gear ring 43, and further improving the reliability of the position of the internal gear ring 43. On the other hand, the retaining rib 432 is hidden, avoiding the situation where the retaining rib 432 protrudes from the outer surface of the internal gear ring 43, resulting in a large overall radial dimension of the internal gear ring 43 and occupying a large space, which helps to further improve the compactness of the overall structure.

[0061] As a preferred embodiment, such as Figure 8 As shown, the baffle 432 has multiple baffles that are spaced apart circumferentially along the outer side wall of the inner tooth ring 43.

[0062] By providing multiple baffles 432 and circumferentially spaced along the outer side wall of the inner gear ring 43, when the pin 52 needs to lock with the inner gear ring 43, the pin 52 can selectively engage with one of the baffles 432 to stop and abut, thereby increasing the probability of the baffles 432 engaging with the pin 52, which in turn shortens the rotation time of the inner gear ring 43 and improves the working efficiency of the food processing machine.

[0063] The technical solutions protected by this utility model are not limited to the above embodiments. It should be noted that any combination of the technical solutions of any embodiment with one or more other embodiments is within the protection scope of this utility model. Although this utility model has been described in detail above with general descriptions and specific embodiments, some modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, all such modifications or improvements made without departing from the spirit of this utility model are within the scope of protection claimed by this utility model.

Claims

1. A user-friendly food processing machine, comprising a main unit and a detachable cup assembly disposed above the main unit, characterized in that, The main unit contains a motor and a gearbox connected to the motor. The gearbox includes a rotatable internal gear ring, a sun gear located on the internal gear ring and fixed to the motor shaft, planet gears meshing between the sun gear and the internal gear ring, and a connector connected to the planet gears. The motor shaft is connected to the connector, and a one-way bearing is provided between the connector and the motor shaft. The main unit also has a limiting structure for preventing and limiting the rotation of the internal gear ring. The limiting structure includes a pin and a limiting motor. The limiting motor can drive the pin to lock or disengage from the internal gear ring. In the locked state, the motor shaft rotates relative to the one-way bearing to drive the connector to rotate relative to it. In the disengaged state, the motor shaft and the one-way bearing rotate synchronously to drive the connector to rotate synchronously.

2. The user-friendly food processing machine according to claim 1, characterized in that, A linkage component is provided between the limit motor and the pin. The linkage component can move with the rotating shaft of the limit motor and drive the pin to move back and forth.

3. The user-friendly food processing machine according to claim 2, characterized in that, The linkage component includes a cam mounted on the rotating shaft and a spring sleeved on the outside of the pin. The cam abuts against the end of the pin away from the internal gear ring, and the spring can drive the pin to reset so as to disengage from the internal gear ring.

4. The user-friendly food processing machine according to claim 3, characterized in that, The pin sidewall is provided with an outwardly extending baffle, and the limiting structure also includes a stop block located near the internal gear ring. The stop block is provided with a clearance hole for the pin to pass through. One end of the spring abuts against the stop block, and the other end abuts against the baffle.

5. A user-friendly food processing machine according to claim 3, characterized in that, The limiting structure further includes a stop rib. The cam is provided with a first protrusion and a second protrusion that cooperate with the stop rib. The cam rotates and drives the pin to lock with the internal gear ring. The first protrusion abuts against the stop rib. The cam rotates and the pin disengages from the internal gear ring. The second protrusion abuts against the anti-rotation rib.

6. A user-friendly food processing machine according to claim 2, characterized in that, The linkage component includes a gear disposed on the rotating shaft and a rack disposed on the pin and meshing with the gear. The limiting motor has a first rotation direction and a second rotation direction. In the first rotation direction, the gear drives the pin to lock with the inner gear ring; in the second rotation direction, the gear drives the pin to disengage from the inner gear ring.

7. A user-friendly food processing machine according to claim 1, characterized in that, The limiting structure also includes a fixing bracket for positioning the pin, the fixing bracket having a positioning hole through which the pin passes.

8. A user-friendly food processing machine according to claim 1, characterized in that, The outer wall of the internal gear ring is provided with a stop structure that cooperates with the stop of the limiting structure.

9. A user-friendly food processing machine according to claim 8, characterized in that, The stop structure is a stop rib that extends outward and vertically from the outer side wall of the inner gear ring.

10. A user-friendly food processing machine according to claim 9, characterized in that, The outer wall of the internal gear ring is provided with a concave anti-rotation groove, and the stop rib is provided within the anti-rotation groove; or... The baffle is provided in multiple sections and is spaced circumferentially along the outer side wall of the inner gear ring.

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