Planetary gear motor

Abstract

The utility model discloses a planetary gear motor which comprises an installation shell, a motor assembly and a speed reduction assembly, the motor assembly and the speed reduction assembly are both installed on the installation shell, the motor assembly comprises a motor shaft, and a first tooth-shaped structure is integrally arranged on the motor shaft; the speed reduction assembly comprises a speed reduction gear set and an output shaft which are in transmission connection. The reduction gear set is provided with a second tooth-shaped structure, and the second tooth-shaped structure is meshed with the first tooth-shaped structure so that the reduction gear set can be in transmission connection with the motor shaft. According to the utility model, the first tooth-shaped structure is directly processed on the motor shaft and is meshed with the second tooth-shaped structure on the reduction gear set, so that an independently manufactured gear does not need to be mounted on the motor output shaft, and the mounting process can be simplified. The number of teeth can be increased when the first tooth-shaped structure of the motor shaft is machined, so that the speed ratio can be increased, and meanwhile the field with the low rotating speed requirement can be met with relatively low precision.

Description

Technical Field

[0001] This utility model relates to the field of geared motor technology, and in particular to a planetary geared motor. Background Technology

[0002] In the field of motor applications, many scenarios require adjustment of motor speed to meet actual working demands. Gear reduction is a common and effective method for speed regulation. Currently, common gear reduction assemblies generally adopt a split structure, meaning the motor output shaft and the gear it mates with are two independent parts. During manufacturing, the motor output shaft is machined according to the motor's design requirements, while the gear is designed and manufactured separately based on parameters such as reduction ratio and load capacity. During installation, the gear is mounted to the motor output shaft using keyed connections, splined connections, or interference fits. While this structure can ensure the reliability of the connection and transmission accuracy between the gear and the output shaft to a certain extent, the installation process is complex, increasing production and maintenance costs.

[0003] Furthermore, to improve the precision of gear reduction components, high-precision machining processes and testing equipment are typically employed, which significantly increases manufacturing costs. For sectors such as small household appliances and small machinery where low-speed requirements exist, excessively high precision costs are mismatched with actual needs, resulting in low product cost-effectiveness. Utility Model Content

[0004] In order to overcome at least one of the defects of the prior art, the present invention provides a planetary geared motor, which forms a first tooth structure on the motor shaft for transmission connection with a reduction gear, which can simplify the installation process and meet the requirements of low speed with relatively low precision.

[0005] The technical solution adopted by this utility model to solve its problem is:

[0006] A planetary geared motor includes a mounting housing, a motor assembly, and a reduction assembly. Both the motor assembly and the reduction assembly are mounted on the mounting housing. The motor assembly includes a motor shaft with a first toothed structure integrally formed thereon. The reduction assembly includes a reduction gear set and an output shaft, with the output shaft being drive-connected to the reduction gear set. The reduction gear set has a second toothed structure that meshes with the first toothed structure, thereby enabling the reduction gear set to be drive-connected to the motor shaft.

[0007] Therefore, by directly machining the first tooth structure on the motor shaft, which meshes with the second tooth structure on the reduction gear set, the installation process can be simplified by eliminating the need to install a separately manufactured gear onto the motor output shaft. Furthermore, the number of teeth can be increased during the machining of the first tooth structure on the motor shaft, thereby increasing the speed ratio and enabling applications requiring low-speed operation with relatively low precision.

[0008] Furthermore, the motor shaft includes an axially integrally disposed mounting section and a connecting section, the mounting section being used to connect to the motor; the first toothed structure includes a plurality of gear teeth, the plurality of gear teeth being integrally disposed circumferentially on the connecting section.

[0009] Thus, through the meshing of the teeth of the first tooth structure with the corresponding tooth structures on other components, the teeth can transmit the rotational motion and power of the motor shaft to the meshing components through mutual tooth surface contact, thereby realizing the transmission and conversion of motion.

[0010] Furthermore, the reduction gear set includes a first reduction gear set, a second reduction gear set, and a third reduction gear set. The first reduction gear set is provided with a second tooth structure. The first reduction gear set is driven to the motor shaft. The third reduction gear set is driven to the output shaft. The second reduction gear set is driven to the first reduction gear set and the third reduction gear set.

[0011] Therefore, this invention employs a three-stage reduction structure, achieving a larger overall reduction ratio. Compared to single-stage reduction, multi-stage reduction allows for more precise speed adjustment, making the motor's output speed better suited to the needs of different working scenarios.

[0012] Furthermore, the first reduction gear group includes a plurality of first planetary gears and a first transmission frame. The plurality of first planetary gears surround the outer periphery of the motor shaft. The teeth of the first planetary gears are second tooth structures, and the second tooth structures of the first planetary gears mesh with the first tooth structures of the motor shaft. The first transmission frame is connected to the plurality of first planetary gears. The first transmission frame is connected to the second reduction gear group in a transmission connection.

[0013] Thus, through the meshing transmission between the motor shaft and the first planetary gear, as well as the revolution and rotation of the planetary gear, high-speed rotation can be converted into low-speed rotation.

[0014] Furthermore, the second reduction gear includes a second transmission frame, a first sun gear, and a plurality of second planetary gears. The first sun gear is connected to the first transmission frame, and the plurality of second planetary gears surround the outer periphery of the first sun gear and mesh with the first sun gear. The second transmission frame is connected to the plurality of second planetary gears. The second transmission frame is connected to the third reduction gear in a transmission connection.

[0015] Therefore, the second reduction gear further reduces the speed based on the first reduction gear. Through the meshing transmission of the first sun gear and the second planetary gear, as well as the revolution and rotation of the planetary gears, a secondary reduction in power is achieved, making the speed closer to the low speed required for actual operation of the equipment.

[0016] Furthermore, the third reduction gear includes a third transmission frame, a second sun gear, and a plurality of third planetary gears. The second sun gear is connected to the second transmission frame, and the plurality of third planetary gears surround the outer periphery of the second sun gear and mesh with the second sun gear. The third transmission frame is connected to the plurality of third planetary gears. The output shaft is connected to the third transmission frame.

[0017] Therefore, the third reduction gear plays a crucial role in stabilizing the power output after multiple reduction stages and torque amplification. It ensures that the power received by the output shaft is smooth and reliable.

[0018] Furthermore, the end of the output shaft extends outside the mounting housing; a first bearing is provided between the outer periphery of the output shaft and the mounting housing.

[0019] Furthermore, the mounting housing is provided with a first mounting cavity and a second mounting cavity, the motor assembly is mounted in the first mounting cavity, and the reduction assembly is mounted in the second mounting cavity; the motor shaft extends from the first mounting cavity into the second mounting cavity and is connected to the reduction gear set.

[0020] Thus, the first and second mounting cavities separate the motor assembly and the reduction gear assembly, giving each assembly its own independent mounting space and avoiding mutual interference between components.

[0021] Furthermore, the mounting shell includes a first shell and a second shell, the first mounting cavity is formed in the first shell, and the second mounting cavity is formed in the second shell; the first shell is provided with a first riveting part, and the second shell is provided with a second riveting part, the second riveting part is riveted to the first riveting part to connect the first shell and the second shell.

[0022] Therefore, by riveting the first housing and the second housing together, a reliable connection strength can be provided, which enables the mounting housing to effectively resist external forces such as vibration and impact caused by the high-speed operation of the motor and the torque output of the reduction gear set, thus ensuring the stable operation of the geared motor.

[0023] Furthermore, the first housing is provided with a first limiting part, and the second housing is provided with a second limiting part. The second limiting part is connected to the first limiting part so that the first housing and the second housing are mutually limited in the circumferential direction.

[0024] Thus, the first limiting part and the second limiting part work together to prevent relative circumferential rotation between the first housing and the second housing, ensuring smoother transmission between the motor and the reducer.

[0025] In summary, the planetary geared motor provided by this utility model has the following technical effects:

[0026] 1) The planetary geared motor of this invention achieves efficient power transmission from the motor shaft to the reduction gear set by meshing the first tooth structure on the motor shaft with the second tooth structure on the reduction gear set. Simultaneously, by utilizing the reduction characteristics of the reduction gear set, the high speed of the motor can be reduced to the low speed required by the equipment, meeting the speed requirements of different working scenarios.

[0027] 2) This utility model integrates the first tooth structure directly onto the motor shaft, eliminating the need to install a separately manufactured gear onto the motor output shaft. This avoids cumbersome installation steps, such as precise concentricity alignment and keyed connections, simplifying the installation process. Since the first tooth structure is integrally formed with the motor shaft, compared to separately installed gears, there is no issue of unstable power transmission due to loose connections.

[0028] 3) Because this invention directly machines the toothed structure onto the motor shaft, the teeth can be made smaller within the limited circumferential space of the motor shaft, thereby increasing the number of teeth and thus increasing the speed ratio. Simultaneously, it can meet the requirements of low-speed applications with relatively low precision. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the overall structure of the planetary geared motor according to an embodiment of the present utility model;

[0030] Figure 2 This is a longitudinal cross-sectional view of the planetary geared motor according to an embodiment of the present utility model;

[0031] Figure 3 This is an exploded view of the planetary geared motor according to an embodiment of the present invention (the first tooth structure is not shown);

[0032] Figure 4 This is a schematic diagram of the structure of the motor assembly and the first housing in an embodiment of the present invention.

[0033] Figure 5 This is a schematic diagram of the structure of the deceleration component and the second housing in an embodiment of the present invention.

[0034] Figure 6 This is a schematic diagram of the assembly of the motor assembly and the reduction assembly according to an embodiment of the present utility model (the first tooth structure is not shown);

[0035] Figure 7 This is a schematic diagram of the structure of the motor shaft and the first planetary gear during assembly according to an embodiment of the present invention;

[0036] Figure 8 This is a longitudinal cross-sectional view of the first and second housings assembled according to an embodiment of the present invention.

[0037] The meanings of the reference numerals in the attached figures are as follows:

[0038] 1. Mounting housing; 11. First housing; 111. First riveting part; 112. First limiting part; 113. Boss; 114. First guide slope; 12. Second housing; 120. Connecting flange; 121. Second riveting part; 122. Second limiting part; 123. Second guide slope; 13. Housing body; 131. Snap-fit ​​groove; 14. End cover; 141. Snap-fit ​​block; 2. Motor assembly; 20. Motor shaft; 21. First toothed structure; 22. Mounting section ; 23. Connecting section; 3. Reduction gear set; 30. Output shaft; 31. First reduction gear set; 311. First planetary gear; 312. First transmission frame; 32. Second reduction gear set; 321. Second transmission frame; 322. First sun gear; 323. Second planetary gear; 33. Third reduction gear set; 331. Third transmission frame; 332. Second sun gear; 333. Third planetary gear; 34. Transmission arm; 35. First bearing; 36. Second bearing. Detailed Implementation

[0039] To better understand and implement this invention, the technical solutions in the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings.

[0040] In the description of this utility model, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0041] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0042] See Figures 1 to 3This utility model discloses a planetary geared motor, which includes a mounting housing 1, a motor assembly 2, and a reduction gear assembly, wherein both the motor assembly 2 and the reduction gear assembly are mounted on the mounting housing 1. For details, please refer to [reference needed]. Figure 4 The motor assembly 2 includes a motor shaft 20, and the motor shaft 20 has an integrally formed first toothed structure. (See reference...) Figure 2 and Figure 6 The reduction assembly includes a reduction gear set 3 and an output shaft 30, with the output shaft 30 being drive-connected to the reduction gear set 3. The reduction gear set 3 has a second tooth structure that meshes with a first tooth structure, thereby enabling the reduction gear set 3 to be drive-connected to the motor shaft 20.

[0043] Based on this structure, when using the planetary geared motor of this utility model, firstly, the motor assembly 2 and the reduction assembly are respectively installed in the mounting housing 1, and the motor shaft 20 and the input end of the reduction gear set 3 are meshed and connected through the first tooth structure and the second tooth structure. Then, the mounting housing 1 can be connected to an external device through the connecting flange 120 thereon, and then the output shaft 30 is connected to the component that needs to be driven.

[0044] Then the motor is started, and the motor shaft 20 rotates accordingly. The first toothed structure on the motor shaft 20 transmits power to the reduction gear set 3 as the motor shaft 20 rotates. The reduction gear set 3 is connected to the output shaft 30, and the motion and power, after reduction and torque amplification, are transmitted to the output shaft 30. The output shaft 30 outputs power to connected working components, such as the transmission mechanism and drive wheels of mechanical equipment, thereby driving the entire equipment or mechanism to work.

[0045] Therefore, the planetary geared motor of this invention achieves efficient power transmission from the motor shaft 20 to the reduction gear set 3 through the meshing of the first tooth structure on the motor shaft 20 and the second tooth structure on the reduction gear set 3. Simultaneously, utilizing the reduction characteristics of the reduction gear set 3, the high speed of the motor can be reduced to the low speed required by the equipment, meeting the speed requirements of different working scenarios.

[0046] It should be noted that this utility model integrates the first tooth structure directly onto the motor shaft 20, eliminating the need to install a separately manufactured gear onto the motor output shaft 30. This avoids cumbersome installation steps, such as precise concentricity alignment and keyed connections, simplifying the installation process. Furthermore, since the first tooth structure is integrally formed with the motor shaft 20, compared to separately installed gears, there is no issue of unstable power transmission due to loose connections.

[0047] Furthermore, since this invention directly machines the toothed structure onto the motor shaft 20, the teeth can be made smaller within the limited circumferential space of the motor shaft 20, thereby increasing the number of teeth and thus increasing the speed ratio. Simultaneously, it can meet the requirements of low-speed applications with relatively low precision.

[0048] The reduction gear set 3 of this invention can adopt a planetary gear system structure in the prior art, specifically including a sun gear, planet gears, and an internal gear ring. It should be noted that the first tooth structure on the motor shaft 20 is equivalent to the sun gear, which drives the planet gears to revolve and rotate around the sun gear. The planet gears also interact with the internal gear ring, thereby reducing the speed of the motor shaft 20 and amplifying the torque.

[0049] In addition, during the entire operation, the mounting shell 1 serves to fix and protect the motor assembly 2 and the reduction assembly, ensuring that each component works together in a relatively fixed position, reducing the interference of external factors on the transmission system, and ensuring the stability and reliability of power transmission.

[0050] Further, see Figure 7 The motor shaft 20 includes a mounting section 22 and a connecting section 23 integrally disposed along the axial direction, wherein the mounting section 22 is used for connection with the motor. In addition, the first tooth structure 21 includes a plurality of teeth, and the plurality of teeth are integrally disposed on the connecting section 23 in the circumferential direction.

[0051] Based on this structure, during assembly, the mounting section 22 of the motor shaft 20 can be connected to the center hole of the motor rotor to become the output part of the rotor rotation, transmitting the rotational motion of the rotor. Since the mounting section 22 and the connecting section 23 are integrally set along the axial direction, the connecting section 23 also begins to rotate.

[0052] The connecting section 23 has a first toothed structure 21 integrally formed along its circumference. As the connecting section 23 rotates, the first toothed structure 21 also rotates synchronously. At this time, the teeth of the first toothed structure 21 mesh with the teeth of the second toothed structure on the reduction gear set 3. Through the meshing action between the teeth, the rotational power of the motor shaft 20 is transmitted to the reduction gear set 3, driving the reduction gear set 3 to start operating.

[0053] It should be noted that the reduction gear set 3 is typically composed of multiple gears with different numbers of teeth. These gears mesh with the motor shaft 20 to form a specific transmission ratio. When power is transmitted to the reduction gear set 3, the difference in the number of teeth on the different gears achieves a speed reduction effect. That is, the higher speed of the motor shaft 20 will decrease after passing through the reduction gear set 3, while the torque will increase accordingly.

[0054] Thus, through the meshing of the teeth of the first tooth structure 21 with the corresponding tooth structures on other components, the rotational motion and power of the motor shaft 20 can be transmitted to the meshing components through mutual tooth surface contact, thereby realizing the transmission and conversion of motion.

[0055] Further, see Figure 2 The reduction gear set 3 includes a first reduction gear set 31, a second reduction gear set 32, and a third reduction gear set 33. Specifically, the first reduction gear set 31 is provided with the second tooth structure, and the first reduction gear set 31 is connected to the motor shaft 20 in a driving connection. The third reduction gear set 33 is connected to the output shaft 30 in a driving connection. The second reduction gear set 32 ​​is connected between the first reduction gear set 31 and the third reduction gear set 33 in a driving connection.

[0056] Based on this structure, when the motor starts running, the motor shaft 20 rotates and is connected to the first reduction gear 31 for transmission. The first reduction gear 31 serves as the first stage of reduction. The high-speed rotation of the motor shaft 20 is initially reduced by the meshing of the tooth structure of the two gears, while the torque is initially amplified.

[0057] The power, after being reduced by the first reduction gear 31, is then transmitted to the second reduction gear 32. The second reduction gear 32 further reduces and amplifies the power transmitted from the first reduction gear 31 before transmitting it to the third reduction gear 33. The third reduction gear 33 is connected to the output shaft 30, further reducing and amplifying the power transmitted from the second reduction gear 32, and then outputting the low-speed, high-torque power required for operation to the output shaft 30. The output shaft 30 then drives the connected working components to rotate, completing the entire power transmission process.

[0058] Therefore, this invention employs a three-stage reduction structure, achieving a larger overall reduction ratio. Compared to single-stage reduction, multi-stage reduction allows for more precise speed adjustment, making the motor's output speed better suited to the needs of different working scenarios.

[0059] Further, see Figure 3 and Figure 6 The first reduction gear 31 includes a plurality of first planetary gears 311 and a first transmission frame 312. The plurality of first planetary gears 311 surround the outer periphery of the motor shaft 20, and the first planetary gears 311 are provided with the aforementioned second tooth structure, wherein the teeth on the first planetary gears 311 are the aforementioned second tooth structure, and the second tooth structure of the first planetary gears 311 meshes with the first tooth structure of the motor shaft 20. In addition, the first transmission frame 312 is connected to the plurality of first planetary gears 311, and the first transmission frame 312 is drively connected to the second reduction gear 32.

[0060] Based on this structure, when using the first reduction gear 31, the motor is first started to make the motor shaft 20 rotate. The high-speed rotation of the motor shaft 20 drives several first planetary gears 311 that are meshed with it to start rotating around their own axis. At the same time, since the first planetary gears 311 are distributed around the motor shaft 20, they will also revolve around the motor shaft 20.

[0061] The first transmission frame 312 is connected to several first planetary gears 311. As the first planetary gears 311 revolve, the first transmission frame 312 also begins to rotate. The rotational speed of the first transmission frame 312 has been initially reduced compared to the motor shaft 20, and the torque has also been initially amplified, thus achieving the first stage of deceleration.

[0062] Therefore, through the meshing transmission between the motor shaft 20 and the first planetary gear 311, and the revolution and rotation of the planetary gears, high-speed rotation can be converted into lower-speed rotation. In addition, the distribution of several first planetary gears 311 around the motor shaft 20 allows the power of the motor shaft 20 to be evenly transmitted to each planetary gear, thereby distributing the load evenly, avoiding the problem of excessive local stress, and improving the stability and reliability of the entire transmission system.

[0063] It is worth noting that in the first reduction gear 31, by machining a first tooth structure on the motor shaft 20, and the first tooth structure on the motor shaft 20 is equivalent to a sun gear, the space occupied by adding an extra sun gear in the axial direction can be reduced, making the structure of the entire reduction gear more compact.

[0064] Furthermore, the second reduction gear 32 includes a second transmission frame 321, a first sun gear 322, and a plurality of second planetary gears 323. The first sun gear 322 is connected to the first transmission frame 312, and the plurality of second planetary gears 323 surround the outer periphery of the first sun gear 322 and mesh with the first sun gear 322. In addition, the second transmission frame 321 is connected to the plurality of second planetary gears 323, and the second transmission frame 321 is drive-connected to the third reduction gear 33.

[0065] Based on this structure, when using the second reduction gear 32, after the first reduction gear 31 completes the primary reduction and torque amplification, the power is transmitted to the second reduction gear 32 through the first transmission frame 312. Since the first sun gear 322 is connected to the first transmission frame 312, the rotation of the first transmission frame 312 will drive the first sun gear 322 to rotate synchronously.

[0066] At this time, several second planetary gears 323 surround the outer circumference of the first sun gear 322, and the second planetary gears 323 mesh with and rotate with the first sun gear 322. The rotation of the first sun gear 322 drives the second planetary gears 323 to rotate around their own axes. At the same time, since the second planetary gears 323 are evenly distributed around the first sun gear 322, several second planetary gears 323 will also revolve around the first sun gear 322. During this process, the rotational speed of the second planetary gears 323 is further reduced relative to the first sun gear 322, and the torque is further amplified.

[0067] The second transmission frame 321 is connected to several second planetary gears 323. As the second planetary gears 323 revolve, the second transmission frame 321 begins to rotate. At this time, the power output by the second transmission frame 321 has undergone two reductions and torque amplifications, resulting in a further reduction in its rotational speed and a further increase in its torque.

[0068] Therefore, the second reduction gear 32 further reduces the speed based on the first reduction gear 31. Through the meshing transmission of the first sun gear 322 and the second planetary gear 323, as well as the revolution and rotation of the planetary gears, a secondary reduction in power is achieved, making the speed closer to the low speed required for actual operation of the equipment.

[0069] Furthermore, the third reduction gear 33 includes a third transmission frame 331, a second sun gear 332, and a plurality of third planetary gears 333. Specifically, the second sun gear 332 is connected to the second transmission frame 321, and the plurality of third planetary gears 333 surround the outer periphery of the second sun gear 332, and the third planetary gears 333 mesh with the second sun gear 332. The third transmission frame 331 is connected to the plurality of third planetary gears 333, and the output shaft 30 is connected to the third transmission frame 331.

[0070] Based on this structure, after the second reduction gear 32 completes secondary reduction and torque amplification, the power is transmitted to the third reduction gear 33 through the second transmission frame 321. Since the second sun gear 332 is connected to the second transmission frame 321, the rotation of the second transmission frame 321 drives the second sun gear 332 to rotate synchronously.

[0071] At this point, several third planetary gears 333 surrounding the second sun gear 332 begin to mesh and rotate with it. The rotation of the second sun gear 332 drives the third planetary gears 333 to rotate around their own axes. Simultaneously, because the third planetary gears 333 are evenly distributed around the second sun gear 332, they also revolve around it. During this process, the rotational speed of the third planetary gears 333 relative to the second sun gear 332 further decreases, and the torque further increases.

[0072] The third transmission frame 331 is connected to several third planetary gears 333. As the third planetary gears 333 revolve, the third transmission frame 331 begins to rotate. At this time, the power output by the third transmission frame 331 has undergone three reductions and torque amplifications, resulting in a significant reduction in speed and a significant increase in torque. The output shaft 30 is connected to the third transmission frame 331, which transmits the low-speed, high-torque power that ultimately meets the working requirements to the output shaft 30. The output shaft 30 then drives the connected working parts to rotate.

[0073] Therefore, the third reduction gear 33 plays a crucial role in stabilizing the power output after multi-stage reduction and torque amplification. It ensures that the power received by the output shaft 30 is smooth and reliable, reduces the impact of power fluctuations on the working parts, and improves the stability and reliability of equipment operation.

[0074] Furthermore, the reduction gear set 3 of this utility model achieves efficient reduction and torque amplification functions through the coordinated work of multiple gears within a limited radial and axial space, further optimizing the internal structural layout of the planetary gear motor, making the entire gear motor structure compact and small in size.

[0075] In addition, the bottom of the first transmission frame 312, the second transmission frame 321, and the third transmission frame 331 are all equipped with several transmission arms 34, which are connected one-to-one with several planetary gears. This allows the power reduced by the planetary gears at each stage to be transmitted to the next-stage sun gear through the transmission arms 34 on the transmission frame. Simultaneously, as the planetary gears revolve around the sun gear, the transmission frame also restricts the trajectory of the planetary gears, ensuring they revolve along a predetermined path and guaranteeing the accuracy and stability of the gear transmission.

[0076] Furthermore, the end of the output shaft 30 extends out of the mounting housing 1, and a first bearing 35 is provided between the outer periphery of the output shaft 30 and the mounting housing 1.

[0077] Thus, after three reductions and torque amplifications by the reduction gear set 3, the power is transmitted to the output shaft 30 through the third transmission frame 331. Since the end of the output shaft 30 extends out of the mounting housing 1, the extended part can be connected to external working equipment to transmit the motor's power to the external equipment.

[0078] During the rotation of the output shaft 30, the first bearing 35 provides support. The first bearing 35 is installed between the outer periphery of the output shaft 30 and the mounting housing 1. When the output shaft 30 rotates, the inner ring of the first bearing 35 rotates with the output shaft 30, while the outer ring is fixed to the mounting housing 1. In this way, the output shaft 30 achieves relative movement with the mounting housing 1 through the first bearing 35, reducing friction and wear between the output shaft 30 and the mounting housing 1, and ensuring smooth and stable rotation of the output shaft 30.

[0079] In addition, a second bearing 36 is provided between the motor shaft 20 and the mounting housing 1. The second bearing 36 also serves as a support to reduce friction and wear between the motor shaft 20 and the mounting housing 1.

[0080] Furthermore, the mounting housing 1 is provided with a first mounting cavity and a second mounting cavity, wherein the motor assembly 2 is mounted in the first mounting cavity and the reduction gear assembly is mounted in the second mounting cavity. (See reference...) Figure 2 The motor shaft 20 extends from the first mounting cavity into the second mounting cavity and is connected to the reduction gear set 3.

[0081] Based on this structure, during the assembly of the planetary geared motor, the motor assembly 2 is installed in the first mounting cavity, while the reduction assembly is installed in the second mounting cavity. The motor shaft 20 in the motor assembly 2 extends from the first mounting cavity into the second mounting cavity and connects to the reduction gear set 3.

[0082] When the motor starts running, the motor assembly 2 generates power within the first mounting cavity, and the motor shaft 20 begins to rotate. Since the motor shaft 20 extends from the first mounting cavity into the second mounting cavity, it transmits power to the reduction gear set 3. Within the second mounting cavity, the reduction gear set 3 performs multi-stage reduction and torque amplification on the power transmitted from the motor shaft 20, and finally outputs the required power to external equipment via the output shaft 30.

[0083] Thus, the first and second mounting cavities separate the motor assembly 2 and the reduction gear assembly, providing each assembly with its own independent mounting space and avoiding mutual interference between components. Simultaneously, during motor operation, the first mounting cavity ensures the fixed position of the motor assembly 2, guaranteeing the connection accuracy between the motor shaft 20 and the reduction gear set 3; the second mounting cavity supports and positions the reduction gear assembly, ensuring that the gears in each stage of the reduction gear set maintain the correct meshing position, guaranteeing the stability and accuracy of power transmission, and reducing transmission failures caused by component displacement.

[0084] Further, see Figure 3 and Figure 8The mounting housing 1 includes a first housing 11 and a second housing 12, with a first mounting cavity formed in the first housing 11 and a second mounting cavity formed in the second housing 12. The first housing 11 is provided with a first riveting portion 111, and the second housing 12 is provided with a second riveting portion 121. The second riveting portion 121 is riveted to the first riveting portion 111 to connect the first housing 11 and the second housing 12.

[0085] Based on this structure, during assembly, the motor assembly 2 and the reduction gear assembly are first installed on their respective housings, and then the first housing 11, which has a first riveting part 111, is riveted to the second housing 12, which has a second riveting part 121. Specifically, pressure or impact force can be applied by a hydraulic press to rivet the first riveting part 111 and the second riveting part 121 together, thus completing the fastening connection between the first housing 11 and the second housing 12.

[0086] Among them, see Figure 4 The first housing 11 has a boss 113 at one end, and a first riveting part 111 protrudes from the outer periphery of the boss 113. (See reference) Figure 5 The second housing 12 has a slot at its end, and the second riveting part 121 is recessed into the inner circumference of the slot. Specifically, the first riveting part 111 is an arc-shaped protrusion, and the second riveting part 121 is an annular groove. A shoulder is provided on the outer side of the annular groove. When riveting the first housing 11 and the second housing 12, the boss 113 is inserted into the slot, and the arc-shaped protrusion extends beyond the shoulder and is fitted into the annular groove, thus achieving the riveting.

[0087] See Figure 8 The arc protrusion is provided with a first guide slope 114, and the shoulder is provided with a second guide slope 123. The first guide slope 114 is used to cooperate with the second guide slope 123 to guide the arc protrusion along the second guide slope 123 over the shoulder during the riveting process, so as to be embedded into the annular groove and realize the riveting of the arc protrusion and the annular groove.

[0088] Therefore, riveting the first housing 11 and the second housing 12 provides reliable connection strength, enabling the mounting housing 1 to effectively resist external forces such as vibration and impact generated by the high-speed operation of the motor and the torque output of the reduction gear set 3, thus ensuring the stable operation of the geared motor. Simultaneously, the riveting structure eliminates the need for flange structures and bolts, reducing the overall space occupied by the device and avoiding connection instability caused by manually missing screws.

[0089] In addition, the first housing 11 also includes a housing body 13 and an end cap 14, with the end cap 14 located at the end of the housing body 13 away from the second housing 12, and the end cap 14 engaging with the housing body 13. The housing body 13 has a engaging groove 131, and the end cap 14 has a engaging block 141, which engages with the engaging groove 131. During assembly, the motor assembly 2 is first installed inside the housing body 13, then the end cap 14 is aligned with the connection port on the housing body 13, and the engaging block 141 is moved to the opening position of the engaging groove 131. Pressure is then applied to press the end cap 14 into the connection port, during which the engaging block 141 engages axially into the engaging groove 131.

[0090] Therefore, by engaging the snap-fit ​​block 141 with the snap-fit ​​groove 131, the end cover 14 can be circumferentially limited, providing stable support for the rotor, stator and other components inside the housing 13. At the same time, the snap-fit ​​eliminates the need for fasteners such as screws, avoiding the problem of the end cover 14 detaching from the housing 13 due to missing screws.

[0091] Furthermore, the first housing 11 is made of engineering plastic, and the second housing 12 is made of cast iron.

[0092] Thus, when the first housing 11 and the second housing 12 are riveted together, the first riveting part 111 and the second riveting part 121 are actually tightly fixed together by the plastic deformation of the first housing 11.

[0093] In particular, engineering plastics have a low shrinkage rate due to temperature changes, ensuring dimensional stability of the riveted parts when temperatures vary. For example, in outdoor applications where motors are used outdoors, the ambient temperature varies greatly between day and night. The first housing 11, made of engineering plastic, ensures that the riveted joint remains tightly connected, preventing loosening due to thermal expansion and contraction. This maintains the stability of the connection between the first housing 11 and the second housing 12, ensuring continuous and stable operation of the equipment.

[0094] Furthermore, the first housing 11 is provided with a first limiting part 112, and the second housing 12 is provided with a second limiting part 122, wherein the second limiting part 122 is connected to the first limiting part 112 so that the first housing 11 and the second housing 12 are mutually limited in the circumferential direction.

[0095] Specifically, the boss 113 is also provided with a mounting platform, and the first limiting part 112 includes a plurality of first limiting teeth, see reference. Figure 4 Multiple first limiting teeth are circumferentially spaced on the outer periphery of the mounting platform, and a first limiting groove is formed between two adjacent first limiting teeth. (See also...) Figure 5 The second limiting part 122 includes a plurality of second limiting teeth, which are circumferentially spaced on the inner circumference of the groove, and a second limiting groove is formed between two adjacent second limiting teeth.

[0096] The second limiting tooth is used to be inserted into the first limiting groove, and the first limiting tooth is used to be inserted into the second limiting groove, so that the first limiting tooth and the second limiting tooth mesh with each other in the circumferential direction.

[0097] When the motor is powered on, the torque generated by the high-speed rotation of the motor assembly 2 is transmitted to the reduction gear assembly through the motor shaft 20. During this process, the first limiting part 112 and the second limiting part 122 work together to prevent relative circumferential rotation between the first housing 11 and the second housing 12, ensuring smoother transmission between the motor and the reducer.

[0098] It should be noted that, in this embodiment, a plurality of second limiting teeth are circumferentially spaced on the inner circumference of the slot and extend axially along the second housing 12 into the second mounting cavity, forming an internal gear ring of a planetary gear train structure. The first planetary gear 311, the second planetary gear 323, and the third planetary gear 333 all mesh with and interact with the second limiting teeth, thereby reducing the rotational speed of the motor shaft 20 and amplifying the torque.

[0099] The technical means disclosed in this utility model are not limited to those disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications are also considered within the scope of protection of this utility model.

Claims

1. A planetary geared motor, characterized in that: The device includes a mounting housing, a motor assembly, and a reduction gear assembly. Both the motor assembly and the reduction gear assembly are mounted on the mounting housing. The motor assembly includes a motor shaft with a first toothed structure integrally formed thereon. The reduction gear assembly includes a reduction gear set and an output shaft, with the output shaft being drive-connected to the reduction gear set. The reduction gear set has a second toothed structure that meshes with the first toothed structure, thereby enabling the reduction gear set to be drive-connected to the motor shaft.

2. The planetary geared motor according to claim 1, characterized in that: The motor shaft includes an axially integrally disposed mounting section and a connecting section, the mounting section being used to connect to the motor; the first tooth structure includes a plurality of teeth, the plurality of teeth being integrally disposed circumferentially on the connecting section.

3. The planetary geared motor according to claim 1, characterized in that: The reduction gear set includes a first reduction gear set, a second reduction gear set, and a third reduction gear set. The first reduction gear set is provided with a second tooth structure. The first reduction gear set is driven to the motor shaft. The third reduction gear set is driven to the output shaft. The second reduction gear set is driven to the first reduction gear set and the third reduction gear set.

4. The planetary geared motor according to claim 3, characterized in that: The first reduction gear group includes a plurality of first planetary gears and a first transmission frame. The plurality of first planetary gears are arranged around the outer periphery of the motor shaft. The teeth on the first planetary gears are second tooth structures, and the second tooth structures of the first planetary gears mesh with the first tooth structures of the motor shaft. The first transmission frame is connected to the plurality of first planetary gears. The first transmission frame is connected to the second reduction gear group in a transmission connection.

5. The planetary geared motor according to claim 4, characterized in that: The second reduction gear includes a second transmission frame, a first sun gear, and a plurality of second planetary gears. The first sun gear is connected to the first transmission frame, and the plurality of second planetary gears surround the outer periphery of the first sun gear and mesh with the first sun gear. The second transmission frame is connected to the plurality of second planetary gears. The second transmission frame is connected to the third reduction gear.

6. The planetary geared motor according to claim 5, characterized in that: The third reduction gear includes a third transmission frame, a second sun gear, and a plurality of third planetary gears. The second sun gear is connected to the second transmission frame, and the plurality of third planetary gears surround the outer periphery of the second sun gear and mesh with the second sun gear. The third transmission frame is connected to the plurality of third planetary gears. The output shaft is connected to the third transmission frame.

7. The planetary geared motor according to claim 1, characterized in that: The end of the output shaft extends outside the mounting housing; a first bearing is provided between the outer periphery of the output shaft and the mounting housing.

8. The planetary geared motor according to claim 1, characterized in that: The mounting housing has a first mounting cavity and a second mounting cavity. The motor assembly is mounted in the first mounting cavity, and the reduction gear assembly is mounted in the second mounting cavity. The motor shaft extends from the first mounting cavity into the second mounting cavity and is connected to the reduction gear set.

9. The planetary geared motor according to claim 8, characterized in that: The mounting housing includes a first housing and a second housing. The first mounting cavity is formed in the first housing and the second mounting cavity is formed in the second housing. The first housing is provided with a first riveting part and the second housing is provided with a second riveting part. The second riveting part is riveted to the first riveting part to connect the first housing and the second housing.

10. The planetary geared motor according to claim 9, characterized in that: The first housing is provided with a first limiting part, and the second housing is provided with a second limiting part. The second limiting part is connected to the first limiting part so that the first housing and the second housing are mutually limited in the circumferential direction.

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