CN218940870U

CN218940870U - Speed reducing motor

Info

Publication number: CN218940870U
Application number: CN202223224833.5U
Authority: CN
Inventors: 李爱春
Original assignee: Ningbo Yinzhou Hengtai Electromechanical Co ltd
Current assignee: Ningbo Yinzhou Hengtai Electromechanical Co ltd
Priority date: 2022-12-02
Filing date: 2022-12-02
Publication date: 2023-04-28
Anticipated expiration: 2032-12-02

Abstract

The utility model provides a gear motor, which comprises a motor shell and a motor assembly, wherein the motor assembly is arranged in an inner cavity of the motor shell, the motor assembly comprises a stator, a rotor, a motor shaft and a gear transmission part, the stator is fixedly connected to the motor shaft, the rotor is rotationally connected to the motor shaft, the rotor is in transmission connection with the motor shell through the gear transmission part, the motor shell is rotationally connected to the motor shaft, the gear transmission part comprises an inner gear, a duplex gear and a driving gear, the driving gear is fixedly connected to the rotor and is coaxially arranged with the motor shaft, the driving gear is meshed with one end of the duplex gear for transmission, the other end of the duplex gear is meshed with the inner gear for transmission, the inner gear is fixedly connected to the inner cavity of the motor shell and is coaxially arranged with the motor shaft, and a supporting frame for supporting the duplex gear is arranged in the inner cavity of the motor shell. The gear motor of the technical scheme can reduce the whole volume of the motor under the same output moment, and is beneficial to the development of miniaturization of the motor.

Description

Speed reducing motor

Technical Field

The utility model relates to the technical field of motors, in particular to a speed reducing motor.

Background

The motor is an electromagnetic device for converting or transmitting electric energy according to the law of electromagnetic induction, and the main function of the motor is to generate driving torque as a power source of electric appliances or various machines.

The patent with the publication number of CN217135311U discloses a power assembly, which comprises a motor assembly, a motor assembly and a motor assembly, wherein the motor assembly comprises a stator, a rotor and a shaft component, the stator and the rotor are correspondingly arranged, the stator is fixedly arranged on the shaft component, and the rotor is rotatably arranged on the shaft component; the transmission assembly is connected with the rotor and at least comprises a transmission gear, a first tooth-shaped part and a second tooth-shaped part are arranged on the transmission gear, the first tooth-shaped part and the second tooth-shaped part are combined to form a tooth part of the transmission gear, the first tooth-shaped part is made of a first material, the second tooth-shaped part is made of a second material, the first material is made of a metal material, and the second material is made of a flexible material.

The power assembly can realize speed reduction transmission, but when the output torque is required to be increased, the whole volume of the power assembly is increased for improving the output torque, and the development of miniaturization of a motor is not facilitated.

Disclosure of Invention

The utility model mainly aims to provide a gear motor, which comprises but is not limited to solving the technical problems that the whole volume of the motor is increased to increase the output torque in the prior art, and the miniaturization development of the motor is not facilitated.

In order to solve the technical problems, the utility model adopts the following technical scheme: the utility model provides a gear motor, includes motor housing and motor assembly, motor assembly installs motor housing's inner chamber, motor assembly includes stator, rotor, motor shaft and gear drive portion, stator fixed connection is on the motor shaft, the rotor rotates to be connected on the motor shaft, the rotor pass through gear drive portion with motor housing transmission is connected, motor housing rotates to be connected on the motor shaft, gear drive portion includes internal gear, duplicate gear and drive gear, drive gear fixed connection on the rotor and with the coaxial setting of motor shaft, drive gear with duplicate gear one end meshing transmission, the duplicate gear other end with the internal gear meshing transmission, internal gear fixed connection be in motor housing's inner chamber and with the coaxial setting of motor shaft, motor housing's inner chamber is equipped with the support frame that is used for supporting duplicate gear.

The beneficial effects of the utility model are as follows: the stator circular telegram drives the rotor and rotates around the motor shaft, the rotor drives the drive gear and rotates around the motor shaft, the drive gear drives the duplicate gear and rotates around the motor shaft, the internal gear drives the motor casing and rotates around the motor shaft, realize the rotation of motor casing, make the drive ratio of motor increase through adopting duplicate gear structure, enlarge the output moment of motor from this, need not to increase the motor volume and increase output moment, avoid taking the space of too many motor casing inner chamber simultaneously, prevent the volume increase of motor casing, when under the same output moment, can reduce motor overall volume, thereby do benefit to the miniaturized development of motor.

Preferably, the duplex gear comprises a first reduction gear and a second reduction gear which are coaxially and fixedly connected, the first reduction gear is meshed with the driving gear, and the second reduction gear is meshed with the inner gear. Through adopting above-mentioned structure, make first reduction gear and second reduction gear's connection reliable, improve duplex gear and internal gear and drive gear meshing transmission's stability respectively.

Preferably, the first reduction gear and the second reduction gear are compound gears. Through adopting compound gear, both can guarantee the transmission of high strength, can also reduce transmission noise simultaneously, do benefit to the noise reduction of motor.

Preferably, the composite gear comprises a base body, a first gear ring and a second gear ring which are coaxial are fixedly connected to the peripheral wall of the base body, teeth on the first gear ring are in one-to-one correspondence with teeth on the second gear ring, the first gear ring is made of metal materials, and the second gear ring is made of flexible materials. The first gear ring made of metal can ensure the stability of transmission, the second gear ring made of flexible materials can reduce the noise of transmission, and the transmission stability and reliability of the composite gear are improved.

Preferably, the support frame is coaxially sleeved on the motor shaft, at least one planetary shaft is fixedly connected to the support frame, the planetary shafts are uniformly distributed around the circumference of the motor shaft, the planetary shafts are parallel to the motor shaft, and the duplex gears are rotatably connected to the planetary shafts. Through adopting above-mentioned structure, duplex gear can stabilize the rotation and connect on the planet axle, improves duplex gear's support reliability at the support frame.

Preferably, the support frame is a one-way clutch or an integrated planet carrier. The one-way clutch is beneficial to unidirectional rotation of the motor, and the integrated planet carrier is beneficial to forward and reverse rotation of the motor, so that the use requirements of multiple environments are facilitated.

Preferably, at least one end of the motor shaft extends out of the motor housing. Through adopting above-mentioned structure, do benefit to motor single output axle or two output axles and be connected with external equipment, improve the practicality.

Drawings

Fig. 1 is a schematic structural view of a reduction motor of the present utility model;

FIG. 2 is a schematic structural view of a double gear;

FIG. 3 is a schematic structural view of a compound gear;

reference numerals illustrate:

1. a motor housing; 11. a hub; 12. an end cap; 2. a motor assembly; 21. a stator; 22. a rotor; 23. a motor shaft; 24. a gear transmission part; 241. an internal gear; 242. a duplex gear; 2421. a first reduction gear; 2422. a second reduction gear; 243. a drive gear; 244. a support frame; 2441. a planetary shaft; 245. a composite gear; 2451. a base; 2452. a first gear ring; 2453. a second gear ring.

Detailed Description

In order that the above objects, features and advantages of the utility model will be readily understood, a more particular description of the utility model will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings.

In the description of the present utility model, it should be noted that the positional or positional relationship indicated by the terms such as "upper", "lower", "left", "right", "front", "rear", etc. are based on the positional or positional relationship shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or element in question must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

As shown in fig. 1 to 3, the utility model provides a gear motor, which comprises a motor housing 1 and a motor assembly 2, wherein the motor assembly 2 is installed in an inner cavity of the motor housing 1, the motor assembly 2 comprises a stator 21, a rotor 22, a motor shaft 23 and a gear transmission part 24, the stator 21 is fixedly connected to the motor shaft 23, the rotor 22 is rotationally connected to the motor shaft 23, the rotor 22 is in transmission connection with the motor housing 1 through the gear transmission part 24, the motor housing 1 is rotationally connected to the motor shaft 23, the gear transmission part 24 comprises an inner gear 241, a duplex gear 242, a driving gear 243 and a supporting frame 244, the inner gear 241 is fixedly connected to the inner cavity of the motor housing 1 and is coaxially arranged with the motor shaft 23, the supporting frame 244 is coaxially sleeved on the motor shaft 23, three planetary shafts 2441 are fixedly connected to the supporting frame 244 and are uniformly distributed around the circumference of the motor shaft 23 and are parallel to the motor shaft 23, each planetary shaft 2441 is rotationally connected to one duplex gear 242, one end of the duplex gear 242 is in transmission engagement with the motor shaft 23, and the other end of the duplex gear 242 is coaxially meshed with the driving gear 243 on the motor shaft 23.

Specifically, the double gear 242 includes a first reduction gear 2421 and a second reduction gear 2422 that are coaxially and fixedly connected, the number of teeth of the first reduction gear 2421 is greater than the number of teeth of the second reduction gear 2422, the first reduction gear 2421 is meshed with the driving gear 243, and the second reduction gear 2422 is meshed with the internal gear 241, so that the first reduction gear 2421 and the second reduction gear 2422 are reliably connected, and the stability of the meshing transmission of the double gear 242 with the internal gear 241 and the driving gear 243 is improved.

The first reduction gear 2421 and the second reduction gear 2422 are fixedly connected together by welding, and the first reduction gear 2421 and the second reduction gear 2422 can be fixedly connected together by interference insertion, so that teeth of the first reduction gear 2421 and the second reduction gear 2422 can be machined conveniently, the dimensional accuracy of the teeth is high, and the gear meshing transmission efficiency is improved.

The internal gear 241, the driving gear 243, and the duplex gear 242 may each be a spur gear or a helical gear.

In order to ensure high-strength transmission of the duplex gear 242, transmission noise can be reduced, the first reduction gear 2421 and the second reduction gear 2422 are both composite gears 245, the composite gears 245 comprise a base 2451, a first gear ring 2452 and a second gear ring 2453 which are coaxial are fixedly connected to the peripheral wall of the base 2451, teeth on the first gear ring 2452 are in one-to-one correspondence with teeth on the second gear ring 2453, the first gear ring 2452 is made of metal, the second gear ring 2453 is made of flexible material, the first gear ring 2452 made of metal can ensure transmission stability, the second gear ring 2453 made of flexible material can reduce transmission noise, transmission stability and reliability of the composite gears 245 are improved, the first gear ring 2452 is integrally connected to the base 2451, and the flexible material can be alloy steel or plastic.

The support frame 244 is a one-way clutch or an integrated planet carrier, the one-way clutch is beneficial to unidirectional rotation of the motor, and the integrated planet carrier is beneficial to forward and reverse rotation of the motor, so that the use requirements of multiple environments are facilitated.

At least one end of the motor shaft 23 extends out of the motor housing 1, which is beneficial to connecting a single output shaft or a double output shaft of the motor with external equipment and improves practicability.

The motor shell 1 comprises a hub 11 and an end cover 12, wherein the end cover 12 is connected to the hub 11 through a plurality of locking screws, so that disassembly and assembly of the motor are facilitated, and the hub 11 is a rim-integrated hub or spoke-type hub.

Although the present disclosure is described above, the scope of protection of the present disclosure is not limited thereto. Various changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the disclosure, and these changes and modifications will fall within the scope of the utility model.

Claims

1. The gear motor comprises a motor shell (1) and a motor assembly (2), wherein the motor assembly (2) is arranged in an inner cavity of the motor shell (1), the motor assembly (2) comprises a stator (21), a rotor (22), a motor shaft (23) and a gear transmission part (24), the stator (21) is fixedly connected to the motor shaft (23), the rotor (22) is rotationally connected to the motor shaft (23), the rotor (22) is in transmission connection with the motor shell (1) through the gear transmission part (24), the motor shell (1) is rotationally connected to the motor shaft (23), and the gear transmission part (24) is characterized by comprising an inner gear (241), a duplex gear (242) and a driving gear (243), the driving gear (243) is fixedly connected to the rotor (22) and is coaxially arranged with the motor shaft (23), one end of the driving gear (243) is in transmission engagement with one end of the duplex gear (242), the other end of the duplex gear (242) is in transmission engagement with the inner gear (241), the motor (241) is fixedly connected to the inner cavity (23) and is coaxially arranged, the inner cavity of the motor shell (1) is provided with a supporting frame (244) for supporting the duplicate gear (242).

2. A gear motor according to claim 1, characterized in that the duplex gear (242) comprises a first reduction gear (2421) and a second reduction gear (2422) fixedly connected coaxially, the first reduction gear (2421) being in mesh with the drive gear (243), the second reduction gear (2422) being in mesh with the internal gear (241).

3. A gear motor according to claim 2, characterized in that the first reduction gear (2421) and the second reduction gear (2422) are compound gears (245).

4. A gear motor according to claim 3, wherein the composite gear (245) comprises a base body (2451), a first gear ring (2452) and a second gear ring (2453) which are coaxial are fixedly connected to the peripheral wall of the base body (2451), teeth on the first gear ring (2452) are in one-to-one correspondence with teeth on the second gear ring (2453), the first gear ring (2452) is made of a metal material, and the second gear ring (2453) is made of a flexible material.

5. A gear motor according to claim 1, wherein the supporting frame (244) is coaxially sleeved on the motor shaft (23), at least one planetary shaft (2441) is fixedly connected to the supporting frame (244), the planetary shafts (2441) are uniformly distributed around the circumference of the motor shaft (23), the planetary shafts (2441) are parallel to the motor shaft (23), and the duplex gear (242) is rotatably connected to the planetary shafts (2441).

6. A gear motor according to claim 5, characterized in that the support frame (244) is a one-way clutch or an integrated planet carrier.

7. A gear motor according to claim 1, characterized in that at least one end of the motor shaft (23) protrudes out of the motor housing (1).