Micro motor with planetary gear

Abstract

The utility model provides a micro motor with a planetary gear, and belongs to the technical field of motors. The problem that torque increase is limited due to the fact that a motor is provided with a planetary gear set in the prior art is solved. The motor comprises a micro motor and a planetary gear assembly, a motor shaft extends out of the micro motor, the planetary gear assembly is connected with the motor shaft, and the planetary gear assembly comprises a first planetary gear set, a second planetary gear set, a front fixing plate, a rear fixing plate and a protective shell. The first planetary gear set comprises a plurality of first planetary gears and a first planetary gear carrier, the second planetary gear set comprises a plurality of second planetary gears and a second planetary gear carrier, the first planetary gears are installed on the first planetary gear carrier, and a first sun gear is arranged at the front end of the second planetary gear carrier; the second planetary gear is installed on the second planetary gear carrier, and the middle of the second planetary gear is connected with a second sun gear in an engaged mode. The utility model has the advantage that the torque is greatly increased.

Description

Technical Field

[0001] The utility model belongs to the technical field of motors and relates to a micro motor with planetary gears. Background Art

[0002] Micromotors are often used in control systems or transmission mechanical loads to realize functions such as detection, analytical calculation, amplification, execution or conversion of electromechanical signals or energy.

[0003] A Chinese patent with publication number CN206402053U discloses a novel planetary gear motor, comprising a motor fixing barrel, a motor fixing barrel cover, a rotor, a first positioning piece, a first bearing, a fan blade, a motor housing, a stator, a second positioning piece, a second bearing, a planetary gear box cover, a motor gear, a planetary gear, a planetary gear fixing column, a sun internal gear, a planetary gear carrier, an output shaft, a planetary gear box, a third bearing, a retaining ring, and a screw. A motor fixing barrel cover is provided at the bottom of the motor fixing barrel, a stator is installed in the motor fixing barrel, a rotor is installed in the stator, a first positioning piece and a first bearing are provided at one end of the rotating shaft of the rotor, and the rotor passes through the motor fixing barrel cover at the bottom of the motor fixing barrel and is fixedly connected to the fan blade, the fan blade is installed in the motor housing, and a second positioning piece, a second bearing and a planetary gear box cover at the other end of the rotating shaft of the rotor are fixedly connected to the motor gear, and the motor gear is provided on the planetary gear.

[0004] The patent provides a new planetary gear motor equipped with a planetary gear set with limited torque boost. Utility Model Content

[0005] The purpose of the utility model is to provide a micro motor with planetary gears in view of the above problems existing in the prior art.

[0006] The purpose of the utility model can be achieved through the following technical solutions: a micro motor with planetary gears, comprising a micro motor and a planetary gear assembly, the micro motor extending with a motor shaft, the planetary gear assembly connected to the motor shaft, the planetary gear assembly comprising a first planetary gear set, a second planetary gear set, a front fixed plate, a rear fixed plate and a protective shell, the first planetary gear set comprising a plurality of first planetary gears and a first planetary gear carrier, the second planetary gear set comprising a plurality of second planetary gears and a second planetary gear carrier, the first planetary gear is mounted on the first planetary gear carrier, a first sun gear is arranged at the front end of the second planetary gear carrier, the first planetary gear is meshed with the first sun gear, the second planetary gear is mounted on the second planetary gear carrier, a second sun gear is meshed and connected in the middle of the second planetary gear, the protective shell is mounted on the outside of the first planetary gear set and the second planetary gear set, a threaded hole is opened on the rear fixed plate, a fastening bolt is installed in the threaded hole, and the fastening bolt is connected to the micro motor.

[0007] In the above-mentioned micro motor with planetary gears, a first ring gear is meshed and fixed on the outer side of the first planetary gear.

[0008] In the above-mentioned micro motor with planetary gears, a second ring gear is meshed and fixed on the outer side of the second planetary gear.

[0009] In the above-mentioned micro motor with planetary gears, a bearing seat is integrally formed on the front fixing plate, a bearing is installed in the bearing seat, and the first planetary gear carrier passes through the bearing and the front fixing plate.

[0010] In the above-mentioned micro motor with planetary gears, a plurality of fixing columns are fixedly installed between the front fixing plate and the rear fixing plate.

[0011] In the above-mentioned micro motor with planetary gears, a first metal spacer ring is fixed between the first planetary gear set and the second planetary gear set, and a second metal spacer ring is fixed to the rear side of the second planetary gear set.

[0012] In the above-mentioned micro motor with planetary gears, planes are formed around the front fixing plate and the rear fixing plate, and the front fixing plate and the rear fixing plate are respectively provided with a front connecting hole and a rear connecting hole.

[0013] Compared with the prior art, the micro motor with planetary gears provided by the utility model has the following beneficial effects: 1. By setting and matching the first planetary gear set and the second planetary gear set, a first sun gear is set on the second planetary gear frame, so that the utility model has two planetary gear sets, which can more effectively improve the torque of the motor; 2. By setting the front fixing plate and the rear fixing plate, the structure of the planetary gear assembly is stabilized, and connecting holes are opened on the front fixing plate and the rear fixing plate, which is convenient for the utility model to be connected with other devices. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 It is a schematic diagram of the explosion structure of the utility model;

[0016] Figure 3 It is a schematic diagram of the cross-sectional structure of the utility model.

[0017] In the figure: 1. micro motor; 11. motor shaft; 2. planetary gear assembly; 21. first planetary gear set; 211. first planetary gear; 212. first planetary gear carrier; 213. first sun gear; 214. first ring gear; 215. first metal spacer ring; 22. second planetary gear set; 221. second planetary gear; 222. second planetary gear carrier; 223. second sun gear; 224. second ring gear; 225. second metal spacer ring; 23. front fixing plate; 231. bearing seat; 232. front connecting hole; 24. rear fixing plate; 241. threaded hole; 242. rear connecting hole; 25. protective shell; 3. fastening bolts; 4. bearing; 5. fixing column. DETAILED DESCRIPTION

[0018] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0019] like Figures 1 to 3 As shown, this embodiment includes a micro motor 1 and a planetary gear assembly 2, the micro motor 1 extends a motor shaft 11, the planetary gear assembly 2 includes a first planetary gear set 21, a second planetary gear set 22, a front fixing plate 23, a rear fixing plate 24 and a protective shell 25, the first planetary gear set 21 includes three first planetary gears 211 and a first planetary gear carrier 212, the first planetary gear 211 is installed on the connecting foot of the first planetary gear carrier 212, the second planetary gear set 22 includes three second planetary gears 221 and a second planetary gear carrier 222, the front of the second planetary gear carrier 222 is connected to the first planetary gear carrier 212, and the second planetary gear carrier 222 is connected to the first planetary gear carrier 212. A first sun gear 213 is provided at the end, and the three first planetary gears 211 are all meshed with the first sun gear 213. The second planetary gear 221 is installed on the connecting foot of the second planetary gear carrier 222. The second sun gear 223 is meshed and connected in the middle of the three second planetary gears 221. The second sun gear 223 is connected to the motor shaft 11. The first ring gear 214 and the second ring gear 224 are respectively meshed and fixed on the outer sides of the first planetary gears 211 and the second planetary gears 221. The protective shell 25 is installed on the outer sides of the first ring gear 214 and the second ring gear 224.

[0020] To elaborate further, Figures 1 to 3 As shown, a bearing seat 231 is integrally formed on the front fixing plate 23 , a bearing 4 is installed in the bearing seat 231 , and the first planetary gear carrier 212 passes through the bearing 14 and the front fixing plate 23 and extends out of the bearing seat 231 .

[0021] To elaborate further, Figures 1 to 3 As shown, a threaded hole 241 is formed on the rear fixing plate 24 , and a fastening bolt 3 is installed in the threaded hole 241 . The fastening bolt 3 fixes the micro motor 1 to the rear fixing plate 24 .

[0022] To elaborate further, Figure 1 to Figure 2 As shown, planes are formed around the front fixing plate 23 and the rear fixing plate 24, and a front connecting hole 232 and a rear connecting hole 242 are respectively opened on the front fixing plate 23 and the rear fixing plate 24. The planes and the front connecting holes 232 and the rear connecting holes 242 facilitate the fixed connection of this embodiment with other devices, thereby improving the stability of this embodiment when in use. Four fixing columns 5 are fixedly installed between the front fixing plate 23 and the rear fixing plate 24, and the fixing columns 5 make the structure of the planetary gear assembly 2 more solid.

[0023] To elaborate further, Figures 2 to 3 As shown, a first metal spacer ring 215 is fixed between the first planetary gear set 21 and the second planetary gear set 22, and a second metal spacer ring 225 is fixed to the rear side of the second planetary gear set 22. The first metal spacer ring 215 can ensure the distance between the first planetary gear 211 and the second planetary gear 221, and the second metal spacer ring 225 can ensure the distance between the second planetary gear 221 and the rear fixed plate 24. The first metal spacer plate 215 and the second metal spacer plate 225 effectively protect the safety of the first planetary gear 211 and the second planetary gear 221 during operation.

[0024] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

[0025] Although various terms are used more frequently in this article, the possibility of using other terms is not excluded. These terms are used only to more conveniently describe and explain the essence of the utility model; interpreting them as any additional restrictions is contrary to the spirit of the utility model.

Claims

1. A micro motor with a planetary gear, comprising a micro motor (1) and a planetary gear assembly (2), wherein the micro motor (1) has a motor shaft (11) extending therefrom, and the planetary gear assembly (2) is connected to the motor shaft (11), characterized in that: The planetary gear assembly (2) comprises a first planetary gear set (21), a second planetary gear set (22), a front fixing plate (23), a rear fixing plate (24) and a protective shell (25); the first planetary gear set (21) comprises a plurality of first planetary gears (211) and a first planetary gear carrier (212); the second planetary gear set (22) comprises a plurality of second planetary gears (221) and a second planetary gear carrier (222); the first planetary gears (211) are mounted on the first planetary gear carrier (212); a first sun gear is disposed at the front end of the second planetary gear carrier (222); The first planetary gear (211) is meshed with the first sun gear (213), the second planetary gear (221) is mounted on the second planetary gear carrier (222), the second sun gear (223) is meshed in the middle of the second planetary gear (221), the protective shell (25) is mounted on the outside of the first planetary gear set (21) and the second planetary gear set (22), the rear fixing plate (24) is provided with a threaded hole (241), a fastening bolt (3) is installed in the threaded hole (241), and the fastening bolt (3) is connected to the micro motor (1).

2. A micro motor with planetary gears according to claim 1, characterized in that: A first ring gear (214) is meshed and fixed on the outer side of the first planetary gear (211).

3. A micro motor with planetary gears according to claim 1, characterized in that: A second ring gear (224) is meshed and fixed on the outer side of the second planetary gear (221).

4. A micro motor with planetary gears according to claim 1, characterized in that: A bearing seat (231) is integrally formed on the front fixing plate (23), a bearing (4) is installed in the bearing seat (231), and the first planetary gear carrier (212) passes through the bearing (4) and the front fixing plate (23).

5. The micro motor with planetary gear according to claim 1, characterized in that: A plurality of fixing columns (5) are fixedly mounted between the front fixing plate (23) and the rear fixing plate (24).

6. The micro motor with planetary gear according to claim 1, characterized in that: A first metal spacer ring (215) is fixed between the first planetary gear set (21) and the second planetary gear set (22), and a second metal spacer ring (225) is fixed to the rear side of the second planetary gear set (22).

7. The micro motor with planetary gear according to claim 1, characterized in that: Planes are formed around the front fixing plate (23) and the rear fixing plate (24), and a front connecting hole (232) and a rear connecting hole (242) are respectively formed on the front fixing plate (23) and the rear fixing plate (24).

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