Motor assembly and food processor

Abstract

The application discloses a motor assembly and a food processor. The motor assembly comprises a motor body and a speed change mechanism. The motor body comprises a motor shaft. The speed change mechanism comprises a first output shaft, at least one second output shaft and a transmission assembly. The motor shaft is in transmission connection with the transmission assembly. The motor assembly has a first working state and a second working state. In the first working state, the transmission assembly cuts off the power transmission between the first output shaft and the second output shaft. The motor shaft drives the first output shaft to rotate alone through the transmission assembly. In the second working state, the motor shaft rotates in the opposite direction of the first direction. The motor shaft drives the first output shaft and the second output shaft to rotate together through the transmission assembly. The motor assembly provided by the technical scheme of the application realizes different output modes of electrical equipment.

Description

Technical Field

[0001] This invention relates to the field of household appliance technology, and in particular to a motor assembly and a food processing machine using the motor assembly. Background Technology

[0002] With the development of technology, various electrical appliances have emerged. For example, cooking equipment meets people's dietary needs, while washing machines, hair dryers, and massagers meet personal care needs. Different devices have different speed and torque requirements in different modes. In existing food processing equipment, when the motor output is direct, electronic speed control is often used, resulting in extremely low output torque at low speeds, which cannot drive heavy-duty operations such as kneading and grinding. On the other hand, the solution of configuring a gear transmission mechanism at the motor output end can achieve speed increase / decrease, but since its transmission ratio is a fixed value, it cannot achieve the effect of balancing high and low speeds. A fixed transmission ratio can only achieve a single scenario, which cannot meet people's diverse usage needs. Summary of the Invention

[0003] The main objective of this invention is to provide a motor assembly designed to enable different output modes for food processing machines, thereby meeting people's diverse functional needs for food processing machines.

[0004] To achieve the above objectives, the present invention provides a motor assembly comprising:

[0005] The motor body includes a motor shaft; and

[0006] A transmission mechanism, comprising a first output shaft, at least one second output shaft, and a transmission assembly, wherein the transmission assembly is used to engage or disengage the power transmission between the first output shaft and the second output shaft.

[0007] The motor shaft is connected to the transmission assembly. The motor assembly has a first working state and a second working state. In the first working state, the motor shaft rotates in a first direction, the transmission assembly cuts off the power transmission between the first output shaft and the second output shaft, and the motor shaft drives the first output shaft to rotate independently through the transmission assembly. In the second working state, the motor shaft rotates in the opposite direction to the first direction, and the motor shaft drives the first output shaft and the second output shaft to rotate together through the transmission assembly.

[0008] The technical solution of this invention provides a transmission component in the motor assembly for connecting or disconnecting the power transmission between the first and second output shafts. When the motor shaft rotates in a first direction, the transmission component disconnects the power transmission between the first and second output shafts, and the motor shaft drives the first output shaft to rotate independently via the transmission component. When the motor shaft rotates in the opposite direction to the first direction, the motor shaft drives the first and second output shafts to rotate together via the transmission component. This allows the motor assembly of this application to have multiple output modes. In practical applications, such as in a food processing machine, the first output shaft can be in a high-speed drive state in the first working state to meet needs such as juice blending, while in the second working state it can be in a low-speed and high-torque state to meet heavy-load operation scenarios such as dough kneading, thereby satisfying people's diverse needs for the functions of electrical appliances.

[0009] Optionally, when the motor assembly is in the second operating state, the first output shaft and the second output shaft rotate in opposite directions; and / or,

[0010] The rotational speed of the first output shaft when the motor assembly is in the first operating state is greater than the rotational speed of the motor assembly when it is in the second operating state.

[0011] Optionally, the transmission assembly includes:

[0012] An output rotary body is mounted on the first output shaft and can drive the first output shaft to rotate together with it;

[0013] At least one driven member, which drives the second output shaft to rotate together, and the driven members on two adjacent second output shafts are drive-coupled; and

[0014] An input rotary body is mounted on the motor shaft and can move on the motor shaft;

[0015] When the motor shaft rotates in the first direction, the input rotary body and the output rotary body are coupled to drive the first output shaft to rotate independently. When the motor shaft rotates in the opposite direction to the first direction, the input rotary body moves along the motor shaft to separate from the output rotary body, and the input rotary body transmits power to the output rotary body through the driven member so that the first output shaft and the second output shaft rotate together.

[0016] Optionally, one of the motor shaft and the input rotary body is formed with a helical groove extending in its axial direction, and the other is formed with a guide protrusion adapted to be embedded in the helical groove. The guide protrusion interacts with the helical groove to drive the input rotary body to move axially along the motor shaft.

[0017] Optionally, the motor shaft is further provided with a first limiting structure, which is used to prevent the input rotary body from dislodging from the motor shaft.

[0018] Optionally, the input rotary body has a first coupling part and a first transmission part, and the output rotary body has a second coupling part and a second transmission part;

[0019] When the motor shaft rotates in the first direction, the first coupling part and the second coupling part are coupled in transmission. When the motor shaft rotates in the opposite direction to the first direction, the first coupling part and the second coupling part are disengaged, and the first transmission part and the second transmission part are coupled in transmission to different positions of the driven member respectively.

[0020] Optionally, the first output shaft is provided with a guide portion, the output rotary body is provided with a guide hole, the guide portion passes through the guide hole, and the contour shape of the guide portion and the guide hole is configured to limit the output rotary body to move along the axial direction of the first output shaft;

[0021] The speed change mechanism also includes a reset element, which is used to drive the output rotary body to move along the output shaft toward the input rotary body.

[0022] Optionally, the reset element is a spring or sheet that provides elastic force, or the reset element is a magnet that provides magnetic force.

[0023] Optionally, the output shaft is further provided with a second limiting structure, which is used to prevent the output rotating body from disengaging from the first output shaft.

[0024] Optionally, the driven member has a third transmission part and a fourth transmission part. When the motor shaft rotates in a direction opposite to the first direction, the first transmission part and the third transmission part are coupled in transmission, and the second transmission part is coupled in transmission with the fourth transmission part. The transmission between the first transmission part and the third transmission part, as well as between the second transmission part and the fourth transmission part, are gear transmissions.

[0025] Optionally, the speed change mechanism further includes a housing connected to the motor body, the transmission assembly is disposed inside the housing, the first output shaft and the second output shaft are rotatably mounted on the housing and partially extend out of the housing, and the motor shaft extends into the housing and is connected to the transmission assembly for transmission.

[0026] The present invention also proposes a food processing machine, which includes a main unit, a container and processing actuators. The main unit is provided with a motor assembly as described above, and a motor bracket is provided in the main unit. The motor assembly is fixed to the motor bracket.

[0027] Wherein, one of the first output shaft and the second output shaft is used to drive the container to rotate, and the other is used to drive the processing actuator to rotate in the container.

[0028] Optionally, one of the first output shaft and the second output shaft passes through the container and is connected to the processing actuator, serving as a rotation axis during the rotation of the container, while the other one drives the container to rotate around the rotation axis.

[0029] Optionally, the container includes a container body and a first drive unit connected to the container body, and a second drive unit is provided on the first output shaft or the second output shaft, and the second drive unit is drivenly connected to the first drive unit.

[0030] In one embodiment, the food processing machine includes a main unit, a container, and processing actuators. The main unit is provided with a motor assembly as described above, and a motor bracket is provided inside the main unit. The motor assembly is fixed to the motor bracket.

[0031] Wherein, the first output shaft and the second output shaft are used to drive different processing actuators within the same container;

[0032] Alternatively, there may be multiple containers, and one of the containers may contain one of the processing actuators, with the first output shaft and the second output shaft respectively used to drive the processing actuator within one of the containers.

[0033] Optionally, the machining actuators on the first output shaft and the machining actuators on the second output shaft are at different heights. Attached Figure Description

[0034] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0035] Figure 1 This is a cross-sectional view of a motor assembly according to an embodiment of the present invention when it rotates in a first direction;

[0036] Figure 2 for Figure 1 A cross-sectional view of the motor assembly when it rotates in the opposite direction to the first direction;

[0037] Figure 3 This is a cross-sectional view of a motor assembly according to another embodiment of the present invention;

[0038] Figure 4 for Figure 1 A schematic diagram of the exploded structure of the central motor assembly;

[0039] Figure 5 for Figure 1 Another exploded structural diagram of the central motor assembly;

[0040] Figure 6 This is an assembly diagram of the transmission component in another embodiment of the motor assembly of the present invention;

[0041] Figure 7 for Figure 6 A schematic diagram of the transmission assembly in another state;

[0042] Figure 8 This is an assembly diagram of the transmission component in another embodiment of the motor assembly of the present invention;

[0043] Figure 9 for Figure 8 A schematic diagram of the transmission assembly in another state;

[0044] Figure 10 This is an assembly diagram of the transmission component in another embodiment of the motor assembly of the present invention;

[0045] Figure 11 for Figure 10 Schematic diagram of the transmission assembly in another state

[0046] Figure 12 This is a cross-sectional view of a food processing machine according to an embodiment of the present invention;

[0047] Figure 13 for Figure 12 A schematic diagram showing the first and second drive units combined at different positions on the container in a food processing machine;

[0048] Figure 14 This is a partial cross-sectional view of a food processing machine according to another embodiment of the present invention;

[0049] Figure 15 This is a partial cross-sectional view of a food processing machine according to another embodiment of the present invention;

[0050] Figure 16 This is a partial cross-sectional structural schematic diagram of a food processing machine according to another embodiment of the present invention.

[0051] Explanation of icon numbers:

[0052]

[0053]

[0054] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0055] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0056] It should be noted that all directional indications in the embodiments of the present invention are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0057] Furthermore, the use of terms such as "first" and "second" in this invention is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the term "and / or" throughout the text includes three solutions; taking A and / or B as an example, it includes technical solution A, technical solution B, and a technical solution that simultaneously satisfies A and B. Furthermore, the technical solutions of various embodiments can be combined with each other, but this must be based on the ability of a person skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0058] In real life, people use high-speed blenders to make fluid drinks. Blenders use a motor to drive blades and other processing components at high speeds to break down the cell walls of ingredients, resulting in a smooth, fluid beverage. People also use noodle makers, where a motor drives a mixing blade at low speeds for automatic dough kneading. However, this process presents challenges. High-speed blenders are often unsuitable for heavy-duty kneading. Similarly, even with high-speed blenders, when blending viscous ingredients, the current mechanism, typically using electronic speed control, results in very low torque output at low speeds, leading to uneven operation under heavy loads. Therefore, the blending effect for viscous ingredients needs improvement. Furthermore, because electrical appliances have relatively limited functions, people require a wide variety of appliances to meet their needs. Additionally, while some solutions with gear-based speed control can increase / decrease speed, the fixed transmission ratio cannot achieve a balance between high and low speeds. This is because we understand that for some ingredients, blending at both high and low speeds yields better mixing results. Similarly, this applies not only to appliances that process food, but also to other household appliances. For example, washing machines often require different rotation speeds to drive the drum in order to simulate the effect of hand washing clothes. Similarly, hair dryers often require alternating high and low airflow speeds to simulate natural wind when drying hair.

[0059] In order to solve the above problems and bring convenience to people's lives, this application provides an electric motor assembly 1.

[0060] Please refer to Figures 1 to 5 In one embodiment, the motor assembly 1 of this application, in order to achieve different output speeds and torques, includes a motor body 10 and a speed-changing mechanism 20. In one structural form, the motor body 10 includes a first end cover 11, a second end cover 12, a stator assembly (not shown) and a rotor assembly disposed between the first end cover 11 and the second end cover 12. The rotor assembly is disposed inside the stator assembly and is connected to a motor shaft 13. One end of the motor shaft 13 is rotatably connected to the first end cover 11, and the other end passes through the second end cover 12 and is rotatably connected to the second end cover 12. It is understood that the structure of the motor assembly 1 (not shown in the figure) also includes a drive circuit board. The drive circuit board outputs three-phase current through a set control algorithm to make the stator assembly form a rotating magnetic field, thereby driving the rotor assembly to rotate and thus driving the motor shaft 13 to rotate. In order to ensure the stability of the motor shaft 13 during rotation, the present application has a first bearing z1 installed on both the first end cover 11 and the second end cover 12. The motor shaft 13 is fixedly connected to the inner ring of the first bearing z1. The first end cover 11 and the second end cover 12 are both formed with groove structures for the first bearing z1 to be installed and fixed. The outer ring of the first bearing z1 is respectively embedded and fixed in the groove structure of the first end cover 11 and the second end cover 12.

[0061] The speed change mechanism 20 includes a first output shaft 40, at least one second output shaft 70, and a transmission assembly, which is used to engage or disengage the power transmission between the first output shaft 40 and the second output shaft 70. Figures 1 to 2 The second output shaft 70 shown is 1 unit. Figure 3 The illustrated scheme has two second output shafts 70. Of course, the scheme of this application can also be configured to have three or other numbers of second output shafts 70 as needed. The motor shaft 13 is connected to the transmission assembly. The motor assembly 1 has a first operating state where, when the motor shaft 13 rotates in a first direction, the transmission assembly cuts off the power transmission between the first output shaft 40 and the second output shaft 70, and the motor shaft 13 drives the first output shaft 40 to rotate via the transmission assembly. It also has a second operating state where, when the motor shaft 13 rotates in the opposite direction to the first direction, the motor shaft 13 drives the first output shaft 40 and the second output shaft 70 to rotate together via the transmission assembly. The torque of the first output shaft 40 in the second operating state is different from the torque of the motor assembly 1 in the first operating state.

[0062] In one embodiment, the transmission assembly includes an input rotary body 30, an output rotary body 50, and at least one driven member 60. The input rotary body 30 is mounted on the motor shaft 13 and can rotate together with it under the drive of the motor shaft 13, and the input rotary body 30 can move on the motor shaft 13. The output rotary body 50 is mounted on the first output shaft 40 and can drive the first output shaft 40 to rotate together with it. The driven member 60 drives the second output shaft 70 to rotate together, and the driven members 60 on two adjacent second output shafts 70 are coupled in transmission. In the scheme of this application, the number of driven members 60 corresponds to the number of second output shafts 70, for example, in... Figure 3 In the case shown, the follower 60 includes a sub-follower 60a and a sub-follower 60b, and the sub-follower 60a and the sub-follower 60b are in a constant coupling state. Therefore, the output rotary body 50 only needs to be coupled with one of the followers 60 to realize power transmission.

[0063] The motor assembly 1 of this application can output power in different forms. When the motor shaft 13 rotates in a first direction, the input rotating body 30 and the output rotating body 50 are coupled to allow the first output shaft 40 to run independently at a first speed. At this time, the output rotating body 50 is not in contact with the driven member 60. When the motor shaft 13 rotates in the opposite direction to the first direction, the input rotating body 30 moves along the motor shaft 13 to separate from the output rotating body 50, and the input rotating body 30 transmits power to the output rotating body 50 through the driven member 60, so that the first output shaft 40 runs at a second speed. The first speed is greater than the second speed, and in the first working state, the torque output by the first output shaft 40 is greater than the torque output in the second working state. In actual use, the first speed of the first output shaft 40 can be used to achieve one functional mode in the same food processing machine 2, while another functional mode can be achieved at another speed. Alternatively, the same food processing machine 2 can be configured such that the first output shaft 40 runs alternately at the first speed and the second speed to achieve yet another functional mode.

[0064] In one embodiment, the speed change mechanism 20 further includes a housing 20a connected to the motor body 10, a transmission assembly disposed within the housing 20a, a first output shaft 40 and a second output shaft 70 rotatably mounted on the housing 20a and partially extending out of the housing 20a, and a motor shaft 13 extending into the housing 20a and connected to the transmission assembly. The speed change mechanism 20 and the motor body 10 may be an integral structure that can be disassembled together on the food processing machine 2 or other types of electrical appliances. In this case, the housing 20a may be a cover structure with an opening. The housing 20a and the first end cover 11 may be detachable, such as by screws or snap-fit, or non-detachable, such as by welding. The housing 20a and the first end cover 11 together form a mounting cavity (not shown), the aforementioned transmission assembly is located within the mounting cavity, and the motor shaft 13 passes through the first end cover 11 and extends into the mounting cavity to connect with the input rotary body 30. In other configurations, the housing 20a may have an internal mounting cavity, and the housing 20a and the first end cover 11 may be fixedly connected in a detachable or non-detachable manner as described above. In this case, the housing 20a includes a first housing and a second housing that are mutually fitted together. The connection between the first housing and the second housing can be a method that allows for disassembly and separation without damaging the structure, such as a snap-fit ​​connection or a locking connection using fasteners such as screws or bolts. Alternatively, it can be a method that requires structural damage for separation, such as welding, with one side connected by a hinge and the other side by a snap-fit ​​connection. This application does not impose any restrictions on these methods. Furthermore, the material and shape of the first housing and the second housing are acceptable as long as they meet the overall structural strength requirements and can accommodate internal parts such as the input rotary body 30 and the driven member 60. This application does not impose any restrictions on these aspects. This application preferably uses a detachable fit between the housing 20a and the first end cover 11, which is more convenient during assembly. Furthermore, in order to facilitate the overall installation of the motor assembly 1 into the electrical appliance to which it is applied, in one embodiment, a connecting part may be provided on the first end cover 11. The connecting part may be located on the first end cover 11 and / or the housing 20a. In one implementation, the connecting part has a connecting hole, thereby allowing the motor assembly 1 to be assembled into the internal environment of the electrical appliance to which it is to be applied by means of fasteners such as screws or bolts.

[0065] Understandably, in other embodiments, the transmission mechanism 20 may not have a housing 20a, and the first output shaft 40, the second output shaft 70, and the transmission assembly structure may be mounted on the housing of the food processing machine 2 or other types of electrical appliances. The following description further illustrates the solution of this application with the transmission mechanism 20 having a housing 20a. Regarding the rotatable connection between the first output shaft 40 and the second output shaft 70 and the housing 20a, bearings may be fitted at the connection points of the first output shaft 40 and the second output shaft 70 and the housing 20a. The type of bearing is not limited in this application. Correspondingly, a mounting groove structure for fixing the bearing is formed on the housing 20a, such as 2 and... Figure 3 As shown, a second bearing z2 is fixedly mounted on the first output shaft 40, and a third bearing z3 is fixedly mounted on the second output shaft 70.

[0066] The above content also describes the situation where the motor assembly 1 can achieve different transmission ratios at the output of the first output shaft 40 or realize multiple modes in the food processing machine 2 or other types of electrical appliances. It also describes the situation where the motor assembly 1 can be disassembled as a separate module, and another situation where the speed change mechanism 20 is part of the food processing machine 2 or other types of electrical appliances.

[0067] Please refer to the reference. Figure 1 and Figure 2 The input rotary body 30 of this application can move along the motor shaft 13 to allow the input rotary body 30 to have two stopping positions. Figure 1 In the illustrated structure, when the motor shaft 13 rotates in the first direction, the input rotary body 30 stops at the first position. The input rotary body 30 is located at the top of the motor shaft 13 and is coupled to the output rotary body 50. At this time, there is no power transmission between the driven member 60 and the output rotary body 50, and the input rotary body 30 and the driven member 60 are also disengaged. In the first working state, the motor shaft 13 directly drives the output rotary body 50 to rotate through the input rotary body 30, thereby causing the first output shaft 40 to rotate synchronously with the motor shaft 13. At this time, the first output shaft 40 outputs at high speed and low torque independently. It can be understood that in the first working state, the input rotary body 30 and the driven member 60 can also be in a contact coupling state. Figure 2In the structure shown, when the motor shaft 13 runs in the opposite direction to the first direction, the input rotary body 30 moves along the motor shaft 13 and stops at the second position. At this time, the input rotary body 30 moves to the lower part of the motor shaft 13, the input rotary body 30 separates from the output rotary body 50, and the input rotary body 30 transmits power to the output rotary body 50 through the driven member 60, so that the first output shaft 40 runs at the second speed. In the first working state, the first output shaft 40 is in a low speed and high torque output state and rotates outward together with the second output shaft 70. In the second working state, when the first output shaft 40 outputs at a lower speed and a higher torque, it can be applied to scenarios such as noodle making and dough kneading. When switching between the first and second states, due to the difference in speed and torque, it is particularly suitable for situations such as stirring and mixing during food processing, repeated kneading during washing machine washing, and alternating wind speed to form a natural wind effect during hair dryer operation.

[0068] Therefore, the technical solution of the present invention provides a transmission component in the motor assembly 1 for connecting or disconnecting the power transmission between the first output shaft 40 and the second output shaft 70. When the motor shaft 13 rotates in a first direction, the transmission component disconnects the power transmission between the first output shaft 40 and the second output shaft 70, and the motor shaft 13 drives the first output shaft 40 to rotate independently through the transmission component. When the motor shaft 13 rotates in a direction opposite to the first direction, the motor shaft 13 drives the first output shaft 40 and the second output shaft 70 to rotate together through the transmission component. This allows the motor assembly 1 of the present application to have multiple output modes. In practical applications, when applied to the food processing machine 2, the first output shaft 40 can be in a high-speed drive state in the first working state to meet, for example, the need for juice blending, while in the second working state, it can be in a low-speed and high-torque state to meet, for example, the need for heavy-duty operation scenarios such as dough kneading, thereby meeting people's diverse needs for the functions of electrical appliances.

[0069] To enable the input rotating body 30 to move on the motor shaft 13, in one embodiment, the motor assembly 1 further includes a drive element (not shown) for driving the input rotating body 30 to move on the motor shaft 13. The drive element can have various structural forms. In one form, the drive element can be an electromagnet, comprising a first part mounted on the input rotating body 30 and a second part mounted on the housing 20a. Under different current conditions, the electromagnet generates forces in different directions to achieve repulsive and attractive effects on the input rotating body 30, driving the input rotating body 30 to move between a first position and a second position on the motor shaft 13. Under this structural configuration, the cross-sectional shape of the portion of the motor shaft 13 where the input rotating body 30 is mounted should limit the input rotating body 30 to axial movement only along the motor shaft 13, preventing circumferential rotation relative to the motor shaft 13. Therefore, the cross-sectional shape of the portion of the motor shaft 13 where the input rotating body 30 is mounted can be, for example, D-shaped, polygonal, or an irregular shape. In another structural form, the driving component can also be a lever structure mounted on the housing 20a. The lever structure has a driving end extending out of the housing 20a and an actuating end that contacts the input rotating body 30. The user can manually press the driving end to make the lever structure transmit power to the actuating end in a lever-like manner, thereby moving the input rotating body 30 along the motor shaft 13. Of course, the power source of the driving end can also be provided by other electrical components, such as another motor or a cylinder. Similarly, when using a lever structure, the cross-sectional shape of the part of the motor shaft 13 where the input rotating body 30 is mounted should limit the input rotating body 30 to move only along the axial direction of the motor shaft 13, and prevent the input rotating body 30 from rotating circumferentially relative to the motor shaft 13. For details, please refer to the above content, which will not be repeated here. That is, the concept of this embodiment is to drive the input rotating body 30 by applying external force through the driving component as a third party. In this way, the stroke is easier to control. It is understood that the form of the driving component in this application is not limited to the two methods listed above. For example, a non-contact driving method or other feasible methods can be adopted, such as blowing the input rotating body 30 along the motor shaft 13 by airflow.

[0070] In order to enable the input rotary body 30 to move on the motor shaft 13, in another embodiment, please refer again to the reference. Figures 1 to 3One of the motor shaft 13 and the input rotary body 30 is formed with a spiral groove 14 extending in its axial direction, and the other is formed with a guide protrusion 34 adapted to be embedded in the spiral groove 14. The interaction between the guide protrusion 34 and the spiral groove 14 drives the input rotary body 30 to move along the axial direction of the motor shaft 13. In one configuration, the helical groove 14 is formed on the motor shaft 13, and the guide protrusion 34 is formed on the inner wall of the input rotary body 30. The length of the helical groove 14 extending axially on the motor shaft 13 should be slightly greater than the distance from the first position to the second position. The guide protrusion 34 is also helical and has multiple segments. During operation, when the motor shaft 13 rotates in the first direction, the input rotary body 30 is driven by the driving force generated by the pressure between the guide protrusion 34 and the wall of the helical groove 14 to move the input rotary body 30 close to the output rotary body 50 and reach the first position, thereby realizing the transmission coupling between the input rotary body 30 and the output rotary body 50. When the motor shaft 13 rotates in the opposite direction to the first direction, the guide protrusion 34 generates a reverse force on the input rotary body 30, causing the input rotary body 30 to move from the first position to the second position, where it contacts the driven member 60 and can transmit power to the output rotary body 50. In this embodiment, the driving force of the input rotary body 30 is achieved without the aid of other external components. It is cleverly achieved by modifying the structure of the motor shaft 13 and the input rotary body 30 itself. Therefore, the number of parts is reduced, the cost is lowered, and the overall structure of the motor assembly 1 is smaller and more compact.

[0071] In an embodiment where the input rotary body 30 is driven by the cooperation of the spiral groove 14 and the guide protrusion 34, to ensure the stability of the overall structure, in one embodiment, a first limiting structure 22 is also provided on the motor shaft 13. The first limiting structure 22 is used to prevent the input rotary body 30 from rotating out of the range of the spiral groove 14 of the motor shaft 13. In one structural form, the first limiting structure 22 is a retaining ring installed at one end of the motor shaft 13 facing the first output shaft 40, wherein the motor shaft 13 may be provided with a retaining groove to engage and fix the retaining ring. Further, to prevent the input rotary body 30 from colliding with the housing 20a when it moves on the motor shaft 13 because it has rotated out of the range of the spiral groove 14, the first limiting structure 22 may also include another retaining ring provided at the connection point of the motor shaft 13 located inside the housing 20a and close to the housing 20a. This retaining ring can also be engaged and fixed by a retaining groove formed on the motor shaft 13. It is understood that the specific form of the first limiting structure 22 may also be other, such as a protrusion formed on the motor shaft 13.

[0072] In this embodiment, to ensure stability during the driving process via the cooperation of the spiral groove 14 and the guide protrusion 34, the groove width of the spiral groove 14 is defined as t, and the axial extension height of the guide protrusion 34 in the input rotating body 30 is defined as h, where h is not less than 1.5t. If the axial extension height of the guide protrusion 34 in the input rotating body 30 is too small, its axial support force on the input rotating body 30 will be too weak, which can easily lead to slippage or insufficient structural strength. Therefore, setting h to be not less than 1.5t ensures stability during operation.

[0073] In one embodiment, the input rotary body 30 includes a first base portion 31. The shape of the first base portion 31 can be varied. When the first base portion 31 is columnar, it has a first end and a second end that are disposed opposite to each other. A first coupling portion 32 is disposed at the first end of the first base portion 31 facing the first output shaft 40. A first transmission portion 33 is disposed on the outer side of the second section of the first base portion 31. The first base portion 31 has a shaft hole that passes through the first end and the second end. The shaft hole is used for the motor shaft 13 to be installed. The aforementioned guide protrusion 34 is formed on the inner wall surface of the shaft hole. The first base portion 31, the first coupling portion 32, and the first transmission portion 33 can be an integral structure, or they can be separate structures assembled and fixed together, or two of them can be an integral structure assembled and fixed together with the other.

[0074] The output rotary body 50 includes a second base portion 51, a second coupling portion 52 disposed at one end of the second base portion 51 facing the motor shaft 13, a second transmission portion 53 disposed on the outer side of the second base portion 51, and a first output shaft 40 passing through and mounted on the second base portion 51. The second base portion 51, the second coupling portion 52, and the second transmission portion 53 in the output rotary body 50 can be separate structures, integrated structures, or two integrated structures assembled together with the other. Furthermore, the input rotary body 30 and the output rotary body 50 of this application can be constructed in a regular disc shape due to their three-part structure, or they can be irregular irregular shapes.

[0075] The first coupling part 32 and the second coupling part 52 of this application have various structural forms. In one configuration, the first coupling part 32 and the second coupling part 52 are both one-way gear disk structures. In other configurations, the first coupling part 32 is a groove structure formed by the recess of the end face of the first end, or the first coupling part 32 is a threaded joint structure with external threads formed on the outer wall surface of the first end, or the first coupling part 32 is a plug structure with multiple protrusions protruding outward from the outer wall surface of the first end, and the second coupling part 52 is a structure adapted to the first coupling part 32.

[0076] Specifically, to achieve the above-mentioned output of the motor assembly 1 in multiple modes and different transmission ratios, in one embodiment, the input rotary body 30 has a first coupling part 32 and a first transmission part 33, and the output rotary body 50 has a second coupling part 52 and a second transmission part 53. When the motor shaft 13 rotates in a first direction, the first coupling part 32 and the second coupling part 52 are coupled in transmission. When the motor shaft 13 rotates in the opposite direction to the first direction, the first coupling part 32 and the second coupling part 52 disengage, and the first transmission part 33 and the second transmission part 53 are respectively coupled in transmission to different positions of the driven member 60, causing the first output shaft 40 to rotate in a second state. The driven member 60 has a third transmission part 61 and a fourth transmission part 62. When the motor shaft 13 rotates in the opposite direction to the first direction, the first coupling part 32 and the second coupling part 52 disengage, and the first transmission part 33 contacts and drives the third transmission part 61, and the fourth transmission part 62 contacts and drives the second transmission part 53, causing the first output shaft 40 to rotate at a second speed. Of course, the rotational speed and torque of the first output shaft 40 in the second working state are also adjustable. Specifically, the dimensions of the driven member 60 can be adjusted accordingly. In some embodiments, the first transmission part 33, the second transmission part 53, the third transmission part 61, and the fourth transmission part 62 are all gear ring structures. Of course, the first transmission part 33, the second transmission part 53, the third transmission part 61, and the fourth transmission part 62 of this application can also be selected as friction cylindrical surface structures. Among them, the gear meshing transmission method formed by the gear ring structure has the characteristics of structural stability and large load, and can be considered as a preferred solution. Of course, the friction cylindrical surface structure surface friction drive method makes the entire structure simpler and easier to process and manufacture.

[0077] Furthermore, the output rotary body 50 of this application is also configured to move along the first output shaft 40. Thus, when the motor shaft 13 rotates in the first direction, the input rotary body 30 moves along the motor shaft 13 toward the output rotary body 50 to the first position, thereby realizing the transmission coupling of the first coupling part 32 and the second coupling part 52. Since the output rotary body 50 is also movable, the input rotary body 30 and the driven member 60 will be in a position where they do not contact the driven member 60. When the motor shaft 13 rotates in the opposite direction to the first direction, the input rotary body 30 moves from the first position to the second position and separates from the output rotary body 50. The output rotary body 50 also moves toward the input rotary body 30 and then contacts the driven member 60, thereby drivingly coupling the second transmission part 53 and the fourth transmission part 62. Specifically, as one implementation of this embodiment, the first output shaft 40 is provided with a guide portion 41, and the output rotating body 50 is provided with a guide hole. The guide portion 41 passes through the guide hole, and the contour shape of the guide portion 41 and the guide hole is configured to limit the axial movement of the output rotating body 50 along the first output shaft 40. The motor assembly 1 also includes a reset member 80, which drives the output rotating body 50 to move along the first output shaft 40 toward the input rotating body 30. That is, when the input rotating body 30 and the output rotating body 50 are coupled through the first coupling portion 32 and the second coupling portion 52, the output rotating body 50 is driven by the input rotating body 30 to move a distance away from the motor shaft 13, so that it does not contact the driven member 60, and the reset member 80 is compressed. Simultaneously, in the separated state of the input rotating body 30, the reset member 80 provides a driving force, causing the output rotating body 50 to move toward the motor shaft 13 and thus contact the fourth transmission portion 62 of the driven member 60.

[0078] In the embodiment shown in the figure, the reset member 80 can be a spring or a spring sheet providing elastic force. The spring or spring sheet is disposed between the housing 20a and the second transmission member 50 and is in a compressed state. In other embodiments, the reset member 80 is a magnet providing magnetic force. In this embodiment, a first magnet and a second magnet can be respectively disposed on the housing 20a and the output rotating body 50. The first magnet and the second magnet repel each other, ensuring that the output rotating body 50 always has a tendency to move along the first output shaft 40 towards the motor shaft 13.

[0079] Furthermore, to improve structural stability, a second limiting structure 42 is also provided on the first output shaft 40. The second limiting structure 42 is used to prevent the output rotating body 50 from detaching from the first output shaft 40. In this application, the second limiting structure 42 is located at the end of the first output shaft 40 facing the motor shaft 13. The specific form of the second limiting structure 42 can refer to the form of the first limiting structure 22 described above, and will not be repeated here.

[0080] To achieve a compact overall structure for the motor assembly 1 while ensuring that different parts do not interfere with each other during operation, when the first coupling part 32 and the second coupling part 52 are coupled, the end of the first transmission part 33 away from the first output shaft 40 and the end of the third transmission part 61 facing the first output shaft 40 form an axial distance b. The end of the second transmission part 53 facing the motor shaft 13 and the end of the fourth transmission part 62 away from the motor shaft 13 form an axial distance c. A distance d is formed between the end faces of the motor shaft 13 and the first output shaft 40. The distances b and c are both not less than 0.3 mm, and the distance d is not less than 0.2 mm. Since the input rotary body 30 and the output rotary body 50 are both axially movable, the above parameter design provides sufficient clearance to avoid the possibility of collision, resulting in higher structural stability.

[0081] Please refer to the reference. Figure 6 and Figure 7 In another embodiment of the transmission assembly, the input rotary body 30 is divided into two parts: a first coupling part 32 and a first transmission part 33. Both the first coupling part 32 and the first transmission part 33 are fixedly disposed with respect to the motor shaft 13. The first coupling part 32 and the first transmission part 33 are separate components, with the first coupling part 32 fixed to the end of the motor shaft 13. The output rotary body 50 can also move along the first output shaft 40. In one configuration, a reset component (e.g., a spring) is also provided on the first output shaft 40. The output rotary body 50 and the first output shaft 40 slide axially and rotate together circumferentially through a shaft hole. The driven member 60 is still divided into two parts: a third transmission part 61 and a fourth transmission part 62. In this embodiment, the driven member 60 can move along the second output shaft 70. In one configuration, a helical groove is also provided on the second output shaft 70. The driven member 60 is threadedly connected to the helical groove. The third transmission part 61 and the first transmission part 33 are in a constant coupling state. Therefore, when the motor shaft 13... Figure 6 When rotating in the direction indicated by the arrow, the third transmission unit 61 rotates under the drive of the first transmission unit 33, and the driven member 60 rises in the direction shown in the figure due to the guiding effect of the spiral groove on the second output shaft 70. Since the outer diameter of the third transmission unit 61 is larger than the outer diameter of the fourth transmission unit 62, the output rotating body 50 crosses the third transmission unit 61 in the lateral direction. Therefore, during the rising process, the driven member 60 will push against the output rotating body 50, causing the second coupling part 52 on the output rotating body 50 to separate from the first coupling part 32 of the input rotating body 30. Then, the power is transmitted to the output rotating body 50 in the direction of the first transmission unit 33, the third transmission unit 61, and the fourth transmission unit 62. At this time, the first output shaft 40 and the second output shaft 70 rotate together, and the first output shaft 40 is in a low-speed, high-torque output state. Figure 7When the motor shaft 13 rotates in the opposite direction of the arrow, the output rotating body 50 is pushed down under the drive of the reset member, so that the second coupling part 52 on the output rotating body 50 is coupled with the first coupling part 32 on the input rotating body 30. At this time, because the first transmission part 33 drives the driven member 60 to rotate in the opposite direction, the driven member 60 drops, thereby separating the driven member 60 from the output rotating body 50. Therefore, the motor shaft 13 directly drives the first output shaft 40 to rotate through the first coupling part 32 and the second coupling part 52. At this time, it is a high speed and low torque output state.

[0082] Please refer to the reference. Figure 8 and Figure 9 In another embodiment of the transmission assembly, the input rotary body 30 is divided into a first coupling part 32 and a first transmission part 33. However, unlike this embodiment, the first transmission part 33 is fixedly disposed with the motor shaft 13, while the first coupling part 32 can move along the motor shaft 13. In one configuration, the first coupling part 32 and the motor shaft 13 are threadedly engaged. In this embodiment, the output rotary body 50 is fixed to the first output shaft 40. The driven member 60 is still divided into a third transmission part 61 and a fourth transmission part 62. In this embodiment, the driven member 60 can move along the second output shaft 70. In one configuration, a helical groove is also provided on the second output shaft 70, and the driven member 60 is threadedly connected to the helical groove. The third transmission part 61 and the first transmission part 33 are in a constant coupling state. Thus, when the motor shaft 13... Figure 8 When rotating in the direction indicated by the arrow, the third transmission part 61 rotates under the drive of the first transmission part 33, and the driven member 60 rises in the direction shown in the figure due to the guiding effect of the spiral groove on the second output shaft 70. Meanwhile, the first coupling part 32 moves downward along the motor shaft 13 due to the threaded guiding effect and separates from the second coupling part 52. Power is then transmitted to the output rotating body 50 in the direction of the first transmission part 33, the third transmission part 61, and the fourth transmission part 62. At this time, the first output shaft 40 and the second output shaft 70 rotate together, and the first output shaft 40 is in a low-speed, high-torque output state. Figure 9 When the motor shaft 13 rotates in the opposite direction of the arrow, the first transmission part 33 drives the driven member 60 to rotate in the opposite direction, causing the driven member 60 to descend. As a result, the driven member 60 separates from the output rotating body 50. The first coupling part 32 moves upward along the motor shaft 13 due to the threaded guidance and couples with the second coupling part 52. Therefore, the motor shaft 13 directly drives the first output shaft 40 to rotate independently through the first coupling part 32 and the second coupling part 52. At this time, the first output shaft 40 is in a high-speed, low-torque output state.

[0083] Please refer to the reference. Figure 10 and Figure 11In another embodiment of the transmission assembly, the input rotary body 30 is divided into a first input rotary body 30a and a second input rotary body 30b. The driven member 60 is still divided into a third transmission part 61 and a fourth transmission part 62. The third transmission part 61 and the fourth transmission part 62 are fixed on the second output shaft 70. In this embodiment, the first input rotary body 30a is loosely fitted on the motor shaft 13 and is normally coupled to the third transmission part 61. The output rotary body 50 is normally coupled to the fourth transmission part 62, while the second input rotary body 30b can move along the motor shaft 13. In one configuration, the motor shaft 13 is provided with a helical groove 14, and the second input rotary body 30b is threadedly engaged with the helical groove 14. In this embodiment, the upper end of the second input rotary body 30b is provided with a first coupling part 32, and the lower end is provided with a fourth coupling part 36. The upper end of the first input rotary body 30a is provided with a third coupling part 35, and the fourth coupling part 36 engages with the third coupling part 35. In this embodiment, the output rotating body 50 can move along the first output shaft 40 and has a third coupling part 52 at its lower end that cooperates with the first coupling part 32. In one configuration, the output rotating body 50 cooperates with the shaft hole of the first output shaft 40, for example, with a D-shaped structure, so that the output rotating body 50 can rotate circumferentially with the first output shaft 40 and slide up and down along the first output shaft 40. Furthermore, a reset member 80 (which can be a spring) is installed on the first output shaft 40, which drives the output rotating body 50 to have a downward tendency. Thus, on the motor shaft 13... Figure 10 When rotating in the direction of the arrow, the second input rotating body 30b rises under the drive of the spiral groove 14, causing the second input rotating body 30b to drive the first output shaft 40 and the motor shaft 13 to rotate together through the transmission cooperation of the third coupling part 52 with the first coupling part 32. At this time, the first output shaft 40 rotates and outputs independently, and is in a high speed and low torque output state. When the motor shaft 13 rotates in the direction of the arrow, the second input rotating body 30b rises ... Figure 11 When the arrow in the diagram rotates in the opposite direction, the second input rotary body 30b descends due to the action of the spiral groove 14, the first coupling part 32 separates from the second coupling part 52, and the first input rotary body 30a and the second input rotary body 30b are coupled through the fourth coupling part 36 and the third coupling part 35. Thus, the power is driven to rotate the first output shaft 40 through the transmission path of the first input rotary body 30a, the third transmission part 61, the fourth transmission part 62 and the output rotary body 50. At this time, the first output shaft 40 and the second output shaft 70 rotate together, and the first output shaft 40 is in a low speed and high torque output state.

[0084] Please refer to Figures 12 to 16This application also proposes a food processing machine 2, which includes a main unit, a container 201, and a processing actuator 204. The main unit is provided with a motor assembly 1 and a motor bracket. The motor assembly 1 is fixed to the motor bracket. The specific structure of the motor assembly 1 refers to all the technical solutions of all the above embodiments. Since this food processing machine 2 adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0085] In one embodiment, one of the first output shaft 40 and the second output shaft 70 in the motor assembly 1 is used to drive the container 201 to rotate, and the other is used to drive the processing actuator 204 to rotate within the container 201. In this embodiment, the food processor 2 can be, for example, a food processor, soy milk maker, or blender, and the processing actuator 204 can be, for example, a stirring blade, a grinder, or a stirring rod. Furthermore, turbulence ribs are formed on the inner wall of the container 201. By driving the container 201 to rotate via one of the first output shaft 40 and the second output shaft 70, and driving the processing actuator 204 to rotate via the other, and since the first output shaft 40 and the second output shaft 70 rotate in opposite directions, the combined effect of the rotation of the container 201 and the processing actuator 204 during processes such as stirring or beating food can cause the food inside the container to tumble violently, thereby greatly improving the mixing effect.

[0086] In some application scenarios, one of the first output shaft 40 and the second output shaft 70 can pass through the container 201 and be connected to the processing actuator 204, serving as a rotation axis during the rotation of the container 201, while the other shaft drives the container 201 to rotate around this rotation axis. In this embodiment, refer to... Figure 12 The illustrated scheme shows the main unit mounted at the bottom of container 201, with motor assembly 1 located below container 201. Container 201 includes a container body and a second drive unit 202 connected to the container body. A first drive unit 203 is mounted on the first output shaft 40, and the first drive unit 203 is drively connected to the second drive unit 202. The first drive unit 203 and the second drive unit 202 can be a gear-ring meshing structure or a surface-contact roller friction structure. Figure 12 and Figure 13In this configuration, the second drive unit 202 is annularly arranged with a gear ring on its inner side. A gear is mounted on the first output shaft 40. Based on the above, in this structure, the motor assembly 1 can be in its first operating state. At this time, the first output shaft 40 is a low-speed, high-torque output shaft, thus driving the heavier container 201 containing food to rotate. Of course, in other embodiments, the positions and functions of the first output shaft 40 and the second output shaft 70 can be interchanged when the load is sufficient. Furthermore, the connection point between the first drive unit 203 and the second drive unit 202 can be either the inner side of the second drive unit 202 as shown in the attached figure, or the outer side of the transmission unit. Alternatively, the second drive unit 202 can be located not only at the bottom of the container 201 as shown in the attached figure, but also on the side of the container 201, etc. In other embodiments, the container 201 may not use one of the first output shaft 40 and the second output shaft 70 as the axis of rotation. Instead, the container 201 may use other structures as the axis of rotation. For example, the first output shaft 40 may be driven in conjunction with the upper part of the container 201, while the second output shaft 70 may extend from the upper part of the container 201 and be connected to the processing actuator 204.

[0087] In another application scenario, please refer to Figure 14 The first output shaft 40 and the second output shaft 70 are used to drive different processing actuators 204 within the same container 201. The processing actuator 204, acting as a stirring blade or stirring rod, can have its own rotating shaft, which is mounted on the container 201. Therefore, the first output shaft 40 and the second output shaft 70 can be externally connected to the rotating shaft of the processing actuator 204. It is understood that in other structural forms, the first output shaft 40 and the second output shaft 70 can extend into a container 201 and each connect to a processing actuator 204, meaning the first output shaft 40 and the second output shaft 70 themselves function as rotating shafts. In this embodiment, the two processing actuators 204 can be of the same type but with different sizes or even different types. Based on the above, the first output shaft 40 and the second output shaft 70 can have different rotational speeds and rotate in opposite directions. This effectively drives the food within the container 201 to tumble, which is particularly effective when used for, for example, crushing and mixing food ingredients. Please refer to... Figure 15 In this embodiment, the processing actuators 204 on the first output shaft 40 and the second output shaft 70 can be at the same height or at different heights. When at different heights, a spatial gradient mixing of the ingredients can be formed, resulting in a better tumbling and mixing effect. When at the same height, for large-size, high-power mixing equipment, the need for mixing a large number of ingredients at the same time can be met.

[0088] In another application scenario, please refer to Figure 16The food processing machine of this application can also have multiple containers 201, the number of containers 201 matching the number of the first output shaft 40 and the second output shaft 70. The first output shaft 40 and the second output shaft 70 are respectively used to drive the processing actuator 204 inside a container 201. In this embodiment, the processing actuator 204, which also serves as a stirring blade or stirring rod, can have its own rotating shaft, and the rotating shaft is mounted on the container 201. Then, the first output shaft 40 and the second output shaft 70 can be externally connected to the rotating shaft of the processing actuator 204, or the first output shaft 40 and the second output shaft 70 can each extend into a container 201 and each be connected to a processing actuator 204. The first output shaft 40 and the second output shaft 70 serve as rotating shafts. Through the above configuration, different speeds and torques can be output through the first output shaft 40 and the second output shaft 70, realizing the integration of multiple functions such as heavy-duty dough kneading and light-duty juicing in one machine, thereby reducing the number of electrical appliances and meeting various needs.

[0089] Specifically, the present invention proposes a food processing machine 2 that can have multiple working modes. In the first working mode, the motor assembly 1 drives the processing actuator 204 to run at a speed range of 5000rpm-25000rpm. In this mode, the food processing machine 2 can achieve a high-speed cell-breaking mode, such as pulverizing and beating fruits and vegetables. At this time, the processing actuator is a stirring blade.

[0090] In the second working mode, the motor assembly 1 drives the processing actuator 204 to operate at a speed range of 10,000 rpm to 25,000 rpm. In this mode, the food processor 2 can perform high-speed operation to grind ingredients to obtain food powder. In this mode, the processing actuator is a grinder.

[0091] In the third working mode, the motor assembly 1 drives the processing actuator 204 to operate at a speed range of 50rpm-1000rpm. In this mode, it can be used for stirring viscous ingredients, such as kneading dough or mixing other ingredients. In this mode, the processing actuator is a stirring rod.

[0092] In the fourth working mode, the motor assembly 1 drives the processing actuator 204 to operate at a speed range of 20rpm-500rpm. In this mode, it can be used for, for example, automatic cooking operation, where the processing actuator 204 is a spatula.

[0093] As can be seen from the above, the food processing machine 2, by setting up the motor assembly 1, can enable the first output shaft 40 to output different speeds and torques through the forward and reverse rotation of the motor assembly 1, as well as multiple working modes in which the first output shaft 40 and the second output shaft 70 output together. Therefore, it has a wide range of applications and can greatly reduce the number of appliances in the kitchen.

[0094] The above description is merely an optional embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made using the contents of the present invention's specification and drawings under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A motor assembly, characterized in that, include: The motor body includes a motor shaft; and A transmission mechanism, comprising a first output shaft, at least one second output shaft, and a transmission assembly, wherein the transmission assembly is used to engage or disengage the power transmission between the first output shaft and the second output shaft. The motor shaft is connected to the transmission assembly. The motor assembly has a first working state and a second working state. In the first working state, the motor shaft rotates in a first direction, the transmission assembly cuts off the power transmission between the first output shaft and the second output shaft, and the motor shaft drives the first output shaft to rotate independently through the transmission assembly. In the second working state, the motor shaft rotates in a direction opposite to the first direction, and the motor shaft drives the first output shaft and the second output shaft to rotate together through the transmission assembly. The transmission assembly includes: An output rotary body is mounted on the first output shaft and can drive the first output shaft to rotate together with it; At least one driven member, which drives the second output shaft to rotate together, and the driven members on two adjacent second output shafts are drive-coupled; and An input rotary body is mounted on the motor shaft and can move on the motor shaft; When the motor shaft rotates in the first direction, the input rotary body and the output rotary body are coupled to drive the first output shaft to rotate independently. When the motor shaft rotates in the opposite direction to the first direction, the input rotary body moves along the motor shaft to separate from the output rotary body, and the input rotary body transmits power to the output rotary body through the driven member so that the first output shaft and the second output shaft rotate together.

2. The motor assembly as described in claim 1, characterized in that, When the motor assembly is in the second operating state, the first output shaft and the second output shaft rotate in opposite directions; and / or, The torque of the first output shaft when the motor assembly is in the second operating state is greater than the torque of the motor assembly when it is in the first operating state.

3. The motor assembly as described in claim 1, characterized in that, One of the motor shaft and the input rotary body is formed with a helical groove extending in its axial direction, and the other is formed with a guide protrusion adapted to be embedded in the helical groove. The guide protrusion interacts with the helical groove to drive the input rotary body to move along the axial direction of the motor shaft.

4. The motor assembly as described in claim 1, characterized in that, The input rotary body has a first coupling part and a first transmission part, and the output rotary body has a second coupling part and a second transmission part; When the motor shaft rotates in the first direction, the first coupling part and the second coupling part are coupled in transmission. When the motor shaft rotates in the opposite direction to the first direction, the first coupling part and the second coupling part are disengaged, and the first transmission part and the second transmission part are coupled in transmission to different positions of the driven member respectively.

5. The motor assembly as described in claim 3, characterized in that, The first output shaft is provided with a guide portion, the output rotating body is provided with a guide hole, the guide portion passes through the guide hole, and the contour shape of the guide portion and the guide hole is configured to limit the output rotating body to move along the axial direction of the first output shaft; The speed change mechanism also includes a reset element, which is used to drive the output rotary body to move along the output shaft toward the input rotary body.

6. The motor assembly as described in claim 5, characterized in that, The reset element is a spring or sheet that provides elastic force, or it is a magnet that provides magnetic force.

7. The motor assembly as described in claim 5, characterized in that, The motor shaft is further provided with a first limiting structure, which is used to prevent the input rotary body from detaching from the motor shaft, and / or, the first output shaft is further provided with a second limiting structure, which is used to prevent the output rotary body from detaching from the first output shaft.

8. The motor assembly as described in claim 4, characterized in that, The driven member has a third transmission part and a fourth transmission part. When the motor shaft rotates in a direction opposite to the first direction, the first transmission part and the third transmission part are coupled in transmission, and the second transmission part is coupled in transmission with the fourth transmission part. The transmission between the first transmission part and the third transmission part, as well as between the second transmission part and the fourth transmission part, are gear transmissions.

9. The motor assembly as described in claim 1, characterized in that, The speed change mechanism also includes a housing connected to the motor body, the transmission assembly is disposed inside the housing, the first output shaft and the second output shaft are rotatably mounted on the housing and partially extend out of the housing, and the motor shaft extends into the housing and is connected to the transmission assembly for transmission.

10. A food processing machine, characterized in that, The system includes a main unit, a container, and a processing actuator. The main unit is provided with a motor assembly as described in any one of claims 1 to 9. The main unit is also provided with a motor bracket, and the motor assembly is fixed to the motor bracket. Wherein, one of the first output shaft and the second output shaft is used to drive the container to rotate, and the other is used to drive the processing actuator to rotate in the container.

11. The food processing machine as described in claim 10, characterized in that, One of the first output shaft and the second output shaft passes through the container and is connected to the processing actuator, and serves as a rotation axis during the rotation of the container. The other one drives the container to rotate around the rotation axis.

12. The food processing machine as described in claim 11, characterized in that, The container includes a container body and a first drive unit connected to the container body. A second drive unit is provided on the first output shaft or the second output shaft, and the second drive unit is connected to the first drive unit in a transmission manner.

13. A food processing machine, characterized in that, The system includes a main unit, a container, and a processing actuator. The main unit is provided with a motor assembly as described in any one of claims 1 to 9. The main unit is also provided with a motor bracket, and the motor assembly is fixed to the motor bracket. Wherein, the first output shaft and the second output shaft are used to drive different processing actuators within the same container; Alternatively, there may be multiple containers, and one of the containers may contain one of the processing actuators, with the first output shaft and the second output shaft respectively used to drive the processing actuator within one of the containers.

14. The food processing machine as described in claim 13, characterized in that, The machining actuators on the first output shaft and the machining actuators on the second output shaft are at different heights.

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