CN-224233484-U - Planetary gear motor

CN224233484UCN 224233484 UCN224233484 UCN 224233484UCN-224233484-U

Abstract

The utility model discloses a planetary gear motor which comprises a mounting shell, a motor assembly and a speed reducing assembly, wherein the motor assembly and the speed reducing assembly are both arranged on the mounting shell, the motor assembly comprises a motor shaft, a first tooth-shaped structure is integrally arranged on the motor shaft, the speed reducing assembly comprises a speed reducing gear set and an output shaft, the output shaft is in transmission connection with the speed reducing gear set, a second tooth-shaped structure is arranged on the speed reducing gear set, and the second tooth-shaped structure is meshed with the first tooth-shaped structure so as to enable the speed reducing gear set to be in transmission connection with the motor shaft. According to the utility model, the first toothed structure is directly machined on the motor shaft and is meshed with the second toothed structure on the reduction gear set, and a separately manufactured gear is not required to be mounted on the motor output shaft, so that the mounting process can be simplified. Wherein, can increase the number of teeth when processing the first tooth form structure of motor shaft, can increase the speed ratio from this, can satisfy the field of low rotational speed demand with relatively lower precision simultaneously.

Inventors

YU DEJUN
HUANG ZHONGPENG
ZENG HONGJUN

Assignees

红门智能科技股份有限公司
红门工业(中山)有限公司

Dates

Publication Date: 20260512
Application Date: 20250312

Claims (10)

1. The planetary gear motor is characterized by comprising a mounting shell, a motor assembly and a speed reduction assembly, wherein the motor assembly and the speed reduction assembly are both mounted on the mounting shell, the motor assembly comprises a motor shaft, a first toothed structure is integrally arranged on the motor shaft, the speed reduction assembly comprises a speed reduction gear set and an output shaft, the output shaft is in transmission connection with the speed reduction gear set, a second toothed structure is arranged on the speed reduction gear set, and the second toothed structure is meshed with the first toothed structure so as to enable the speed reduction gear set to be in transmission connection with the motor shaft.
2. The planetary reduction motor according to claim 1, wherein the motor shaft comprises a mounting section and a connecting section which are integrally arranged along an axial direction, the mounting section is used for being connected with the motor, and the first tooth-shaped structure comprises a plurality of gear teeth which are integrally arranged on the connecting section along a circumferential direction.
3. The planetary reduction motor according to claim 1, wherein the reduction gear set comprises a first reduction gear set, a second reduction gear set and a third reduction gear set, the first reduction gear set is provided with the second tooth-shaped structure, the first reduction gear set is in transmission connection with the motor shaft, the third reduction gear set is in transmission connection with the output shaft, and the second reduction gear set is in transmission connection between the first reduction gear set and the third reduction gear set.
4. The planetary gear motor according to claim 3, wherein the first reduction gear group comprises a plurality of first planet gears and a first transmission frame, the plurality of first planet gears encircle the periphery of the motor shaft, teeth on the first planet gears are of the second tooth-shaped structures, the second tooth-shaped structures of the first planet gears are meshed with the first tooth-shaped structures of the motor shaft, the first transmission frame is connected to the plurality of first planet gears, and the first transmission frame is in transmission connection with the second reduction gear group.
5. The planetary reduction motor according to claim 4, wherein the second reduction group comprises a second carrier, a first sun gear and a plurality of second planetary gears, the first sun gear is connected to the first carrier, the plurality of second planetary gears encircle the periphery of the first sun gear and are meshed with the first sun gear, the second carrier is connected to the plurality of second planetary gears, and the second carrier is in driving connection with the third reduction group.
6. The planetary reduction motor according to claim 5, wherein the third reduction group includes a third carrier, a second sun gear, and a plurality of third planetary gears, the second sun gear is connected to the second carrier, the plurality of third planetary gears encircle an outer periphery of the second sun gear, and the third planetary gears are meshed with the second sun gear, the third carrier is connected to the plurality of third planetary gears, and the output shaft is connected to the third carrier.
7. The planetary reduction motor according to claim 1, wherein an end portion of the output shaft extends out of the mounting case, and a first bearing is provided between an outer periphery of the output shaft and the mounting case.
8. The planetary gear motor according to claim 1, wherein the housing has a first mounting cavity and a second mounting cavity, the motor assembly is mounted in the first mounting cavity, the reduction assembly is mounted in the second mounting cavity, and 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 gear motor according to claim 8, wherein the mounting case comprises a first case and a second case, the first mounting chamber is formed in the first case, the second mounting chamber is formed in the second case, a first caulking portion is provided on the first case, a second caulking portion is provided on the second case, and the second caulking portion is caulking with the first caulking portion to connect the first case and the second case.
10. The planetary gear motor according to claim 9, wherein the first housing is provided with a first limiting portion, the second housing is provided with a second limiting portion, and the second limiting portion is connected with the first limiting portion so that the first housing and the second housing are mutually limited in a circumferential direction.

Description

Planetary gear motor Technical Field The utility model relates to the technical field of gear motors, in particular to a planetary gear motor. Background In the field of motor applications, many scenarios require adjustment of the rotational speed of the motor to meet the actual working requirements. Among these, gear reduction is a common and efficient way of rotational speed adjustment. At present, a common gear reduction assembly generally adopts a split type structure, namely, an output shaft of a motor and a gear matched with the motor are two independent parts. During manufacturing, the motor output shaft is processed according to the design requirement of the motor, and the gears are independently designed and manufactured according to parameters such as reduction ratio, bearing capacity and the like. When the gear is installed, the gear is installed on the motor output shaft in a key connection mode, a spline connection mode or an interference fit mode. Although the structure can ensure the connection reliability and transmission precision of the gear and the output shaft to a certain extent, the installation procedure is complex, and the production and maintenance cost is increased. In addition, in order to improve the accuracy of the gear reduction assembly, a high-accuracy machining process and inspection equipment are generally employed, which greatly increases the manufacturing cost. For the fields with low rotating speed requirements of small household appliances, small machines and the like, the cost input of the excessively high precision is not matched with the actual requirements, so that the cost performance of the product is low. Disclosure of utility model In order to overcome at least one of the drawbacks of the prior art, the present utility model provides a planetary reduction motor, which can simplify the installation process by forming a first tooth structure on a motor shaft for driving connection with a reduction gear, and can meet the field of low rotation speed requirements with relatively low precision. The utility model adopts the technical proposal for solving the problems that: The planetary gear motor comprises a mounting shell, a motor assembly and a speed reduction assembly, wherein the motor assembly and the speed reduction assembly are both arranged on the mounting shell, the motor assembly comprises a motor shaft, 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, the output shaft is in transmission connection with the speed reduction gear set, a second tooth-shaped structure is arranged on the speed reduction gear set, and the second tooth-shaped structure is meshed with the first tooth-shaped structure so that the speed reduction gear set is in transmission connection with the motor shaft. Therefore, the first toothed structure is directly machined on the motor shaft and meshed with the second toothed structure on the reduction gear set, and a separately manufactured gear is not required to be mounted on the motor output shaft, so that the mounting process can be simplified. Wherein, can increase the number of teeth when processing the first tooth form structure of motor shaft, can increase the speed ratio from this, can satisfy the field of low rotational speed demand with relatively lower precision simultaneously. Further, the motor shaft comprises a mounting section and a connecting section which are integrally arranged along the axial direction, the mounting section is used for being connected with the motor, the first tooth-shaped structure comprises a plurality of gear teeth, and the plurality of gear teeth are integrally arranged on the connecting section along the circumferential direction. Therefore, through the mutual engagement of the gear teeth of the first tooth-shaped structure and the corresponding tooth-shaped structures on other parts, the gear teeth can be contacted with each other through the tooth surfaces, the rotary motion and the power of the motor shaft are transmitted to the parts engaged with the gear teeth, and the transmission and the conversion of the motion are realized. Further, the reduction gear set comprises a first reduction gear set, a second reduction gear set and a third reduction gear set, the first reduction gear set is provided with the second tooth-shaped structure, the first reduction gear set is in transmission connection with the motor shaft, the third reduction gear set is in transmission connection with the output shaft, and the second reduction gear set is in transmission connection between the first reduction gear set and the third reduction gear set. Therefore, the utility model adopts a three-stage speed reduction structure, and realizes a larger total speed reduction ratio. Compared with single-stage speed reduction, the multi-stage speed reduction can finely adjust the rotating speed, so that the rotating