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CN-224218223-U - Planetary gear speed reducing motor

CN224218223UCN 224218223 UCN224218223 UCN 224218223UCN-224218223-U

Abstract

The utility model discloses a planetary gear speed reducing motor, which comprises a motor, a planetary gear assembly and an outer shell, wherein the output end of the planetary gear assembly is connected with an output shaft, the output end of the motor is provided with an input end sun gear, the inner peripheral surface of one end of the outer shell, which is close to the motor, is respectively provided with a first bearing and a first annular gear, the inner peripheral surface of the middle part of the outer shell is respectively provided with a second bearing and a second annular gear, the input end sun gear is meshed with a plurality of input end planetary gears, the outer peripheral surface of the middle planetary carrier is provided with a first hollowed-out part for the outer peripheral surfaces of the input end planetary gears to extend out, one end of the middle planetary carrier, which is close to the middle sun gear, is meshed with a plurality of output end planetary gears, is provided with a second hollowed-out part for the outer peripheral surfaces of the output end planetary gears to extend out, and one end of the output end planetary carrier, which is close to the middle sun gear, is matched with the inner ring of the second bearing.

Inventors

  • GUO YULIN

Assignees

  • 慈溪市联星智能家具有限公司

Dates

Publication Date
20260508
Application Date
20250515

Claims (8)

  1. 1. The utility model provides a planetary gear speed reducing motor, includes motor, planetary gear assembly and shell body, planetary gear assembly output and output shaft connection, its characterized in that, the output of motor sets up to the input sun gear, the one end inner peripheral surface that the shell body is close to the motor is provided with first bearing and first ring gear respectively, the middle part inner peripheral surface of shell body is provided with second bearing and second ring gear respectively, planetary gear assembly includes middle planet carrier, sets up a plurality of input planet gears in middle planet carrier inside, sets up middle sun gear, the output planet carrier of setting in middle planet carrier top, sets up a plurality of output planet gears in output planet carrier inside, input sun gear and a plurality of input planet gear meshing, the middle outer peripheral surface of middle planet carrier is provided with the first fretwork portion that supplies a plurality of input planet gear outer peripheral surfaces to stretch out for a plurality of input planet gear mesh with first ring gear, the middle planet carrier is close to the one end of motor with the inner circle cooperation of first bearing, middle sun gear meshes with a plurality of output planet carrier, the middle planet carrier is provided with a plurality of output planet carrier outer peripheral surface and makes output planet carrier and output planet carrier outer peripheral surface of the cooperation.
  2. 2. A planetary gear motor according to claim 1, characterized in that the output of the motor is machined as an input sun gear.
  3. 3. A planetary gear motor according to claim 1, wherein the inner peripheral surface of the end of the outer housing remote from the motor is provided with a third bearing which cooperates with the output end of the planetary gear assembly.
  4. 4. A planetary gear reducer according to claim 3, wherein a seal cover is provided at an end of the outer casing remote from the motor, and an oil seal is provided at an inner side of the seal cover.
  5. 5. The planetary gear reducer of claim 4, wherein the inner peripheral surface of the oil seal is provided with inclined sealing surfaces at both axial ends thereof, respectively.
  6. 6. The planetary gear reducer according to claim 4, wherein the sealing cover comprises a sealing ring, an outer circumferential surface of the sealing ring is connected with an inner wall of the outer shell through threads, and the sealing ring is fixed and then presses against an outer ring of the third bearing.
  7. 7. The planetary gear reducer of claim 1, wherein the outer housing comprises a first outer housing and a second outer housing which are matched with each other, the first outer housing is close to the motor, the first outer housing is connected with the motor housing through a fastener, the first outer housing and the second outer housing are connected through a fastener, the first outer housing is fixed and then compresses the outer ring of the first bearing, and the second outer housing is fixed and then compresses the outer ring of the second bearing.
  8. 8. The planetary gear reduction motor according to claim 1, wherein the intermediate planet carrier is connected to a plurality of input planet gears by pins, and the output planet carrier is connected to a plurality of output planet gears by pins.

Description

Planetary gear speed reducing motor Technical Field The utility model relates to the technical field of gear motors, in particular to a planetary gear motor. Background The gear motor is an integrated body of the motor and the speed reducer. Currently, the popular reduction motors on the market are mainly divided into a fixed shaft gear type and a planetary gear type, wherein the planetary gear type miniature reduction motor is more and more widely applied due to the characteristics of compact structure and large transmission ratio. The existing planetary gear type gear motor generally adopts a multistage planetary gear set to increase the transmission ratio, larger resultant torque can be provided in speed change, and speed transmission is stable, but the multistage planetary gear type gear motor has more parts and components, is complex in structure and easy to fail, and due to the lack of bearing pieces, the working stability of the motor is poor and noise is easy to generate. However, due to the complex structure of the multi-stage planetary gear set, the proper placement of the bearing members is also a problem. For example, there is currently chinese patent grant publication No. CN217951188U disclosing a miniature planetary gear motor, which satisfies the transmission ratio requirement, but the patent lacks bearing members, resulting in poor working stability of the motor and easy noise emission. Disclosure of utility model The present utility model is directed to solving the above-mentioned problems and disadvantages of the prior art by providing a planetary gear reduction motor. The technical problems solved by the utility model can be realized by adopting the following technical scheme: The utility model provides a planetary gear motor, includes motor, planetary gear assembly and shell body, planetary gear assembly output and output shaft, the output of motor sets up to the input sun gear, the one end inner peripheral surface that the shell body is close to the motor is provided with first bearing and first ring gear respectively, the middle part inner peripheral surface of shell body is provided with second bearing and second ring gear respectively, planetary gear assembly includes middle planet carrier, sets up a plurality of input planet gears in middle planet carrier inside, set up middle sun gear at middle planet carrier top, output planet carrier, set up a plurality of output planet gears in output planet carrier inside, input sun gear and a plurality of input planet gear meshing, the middle part outer peripheral surface of middle planet carrier is provided with the first fretwork portion that supplies a plurality of input planet gear outer peripheral surfaces to stretch out for a plurality of input planet gear meshing with first ring gear, the middle planet carrier is close to the one end of motor with the inner circle cooperation of first bearing, middle sun gear meshes with a plurality of output planet carrier, the middle planet carrier is provided with the output planet carrier outer peripheral surface and makes output planet carrier outer peripheral surface stretch out a plurality of second bearing and output planet carrier outer peripheral surface as the output ring gear. In a preferred embodiment of the utility model, the output of the motor is machined as an input sun gear. In a preferred embodiment of the utility model, the inner peripheral surface of the end of the outer housing, which is far away from the motor, is provided with a third bearing which is matched with the output end of the planetary gear assembly. In a preferred embodiment of the utility model, the end of the outer housing, which is far away from the motor, is provided with a sealing cover, and the inner side of the sealing cover is provided with an oil seal. In a preferred embodiment of the present utility model, both axial ends of the inner peripheral surface of the oil seal are respectively provided with inclined sealing surfaces. In a preferred embodiment of the present utility model, the sealing cover comprises a sealing ring, the outer circumferential surface of the sealing ring is connected with the inner wall of the outer shell through threads, and the sealing ring is pressed against the outer ring of the third bearing after being fixed. In a preferred embodiment of the present utility model, the outer housing includes a first outer housing and a second outer housing that are matched with each other, the first outer housing is close to the motor, the first outer housing is connected with the motor housing through a fastener, the first outer housing and the second outer housing are connected through a fastener, the first outer housing is fixed and then presses the outer ring of the first bearing, and the second outer housing is fixed and then presses the outer ring of the second bearing. In a preferred embodiment of the utility model, the intermediate planet carrier is pin-connected to a number of input planet