CN218235885U

CN218235885U - Connecting structure of motor and speed reducer

Info

Publication number: CN218235885U
Application number: CN202122980192.5U
Authority: CN
Inventors: 占华龙; 鲁方俊; 吴桂义; 陈刚; 胡腾
Original assignee: Wuxi Zhongche Haofu Power Assembly Co ltd
Current assignee: Wuxi Zhongche Haofu Power Assembly Co ltd
Priority date: 2021-11-30
Filing date: 2021-11-30
Publication date: 2023-01-06
Anticipated expiration: 2031-11-30

Abstract

The utility model belongs to a transmission structure, in particular to a connection structure of a motor and a speed reducer, which comprises a motor rotating shaft, a speed reducer input shaft, a matching piece coaxially arranged between the motor rotating shaft and the speed reducer input shaft, and flexible teeth arranged at the periphery of the matching piece around the axis of the matching piece, wherein the end part of the motor rotating shaft is integrally provided with a first tooth, the end part of the speed reducer input shaft is integrally provided with a second tooth, the first tooth and the second tooth are arranged in a staggered way, and the first tooth, the second tooth and the flexible teeth are correspondingly meshed; the utility model discloses flexible tooth can absorb the moment of torsion fluctuation that comes from the power supply, plays the effect of buffering, and the noise reduction reduces simultaneously because of the vibration that the moment of torsion transmission brought, has improved the stability and the whole reliability of power transmission, reduces the wearing and tearing of junction, prolongs the life of diaxon, need not additionally to set up the coupling joint diaxon, can effectively shorten connection structure's axial length, and radial dimension and weight also can be done littleer.

Description

Connecting structure of motor and speed reducer

Technical Field

The utility model belongs to a transmission structure specifically is to a connection structure of motor and reduction gear.

Background

In the power transmission structure using the motor and the speed reducer, the connection mode of the motor and the speed reducer is mostly spline connection or an integrated connection mode. The spline connection means that a motor shaft and a speed reducer input shaft respectively adopt an internal spline or an external spline and are matched for use, but the connection mode has a plurality of defects, particularly, the connection mode has no damping characteristic, the influence of torque fluctuation of a motor on noise and vibration cannot be effectively filtered, poor noise performance is caused, and the connection part is easy to wear and influence power transmission. The torque fluctuation of the motor cannot be effectively filtered by the integrated connection mode, and the motor shaft is easily subjected to radial force and axial force from the meshing of the input gear of the speed reducer, so that the service life of a motor bearing is prolonged, and the overall reliability is reduced.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide a connection structure of motor and reduction gear of noise reduction, improved transmission stability and reliability.

The utility model discloses an content includes motor shaft, reduction gear input shaft and coaxial setting in the fitting piece between motor shaft, reduction gear input shaft, still includes the flexible tooth that sets up in the fitting piece periphery around the fitting piece axis, motor shaft tip an organic whole is provided with tooth one, reduction gear input shaft tip an organic whole is provided with tooth two, and tooth one sets up with tooth two is crisscross, and tooth one, tooth two correspond the meshing with flexible tooth.

Furthermore, the distance from one side of the first tooth departing from the axis of the motor rotating shaft to the axis of the motor rotating shaft is less than or equal to the radius of the motor rotating shaft, and the distance from one side of the second tooth departing from the input shaft of the speed reducer to the axis of the input shaft of the speed reducer is less than or equal to the radius of the input shaft of the speed reducer.

Furthermore, the number of the first tooth and the second tooth is prime number.

Furthermore, the number of the first teeth is the same as that of the second teeth.

Furthermore, the tooth surfaces of the first tooth and the second tooth are attached to the tooth surface of the flexible tooth.

Furthermore, the tooth surface of the flexible tooth is an arc surface.

Furthermore, the tooth profile of the flexible tooth is an involute tooth profile.

Furthermore, the matching piece is made of flexible materials.

Furthermore, the flexible teeth are integrated with the matching piece.

Furthermore, a hole is formed in the middle of the matching piece.

The beneficial effects of the utility model are that, improved vibrations and noise performance on the power transmission route, flexible tooth can absorb the moment of torsion fluctuation that comes from the power supply, plays the effect of buffering, and the noise reduction reduces the vibration that brings because of the moment of torsion transmission simultaneously, has improved the stability and the overall reliability of power transmission, just the utility model discloses the wearing and tearing of reducible motor shaft and speed reducer input shaft department prolong the life of diaxon. Need not additionally to set up the coupling joint diaxon, can effectively shorten connection structure's axial length, need not to reserve the space of installation shaft coupling accessory on motor shaft and the reduction gear input shaft simultaneously, radial dimension also can be done littleer.

Drawings

Fig. 1 is a schematic view of the combined structure of the present invention.

Fig. 2 is a schematic view of the exploded structure of the present invention.

Fig. 3 is a schematic structural diagram of the middle motor shaft of the present invention.

Fig. 4 is a schematic structural diagram of the input shaft of the speed reducer of the present invention.

Fig. 5 is a schematic structural view of the fitting member of the present invention.

Fig. 6 is a longitudinal sectional view of the first tooth, the second tooth and the flexible tooth of the present invention in a state of being engaged with each other.

In the figure, 1 — motor shaft; 11-tooth one; 2-a reducer input shaft; 21-tooth two; 3-a mating member; 31-flexible teeth; 32-hole.

Detailed Description

As shown in fig. 1-6, the utility model discloses a motor shaft 1, reduction gear input shaft 2 and fitting piece 3, fitting piece 3 sets up between motor shaft 1 and reduction gear input shaft 2, and fitting piece 3 and motor shaft 1, the coaxial setting of reduction gear input shaft 2, and three's axis is located same straight line promptly. In the present invention, the longitudinal section of the fitting member 3 may be regular polygon, circular, ring-shaped or other axisymmetric figure. The outer periphery of the fitting piece 3 is provided with flexible teeth 31, and the flexible teeth 31 are arranged around the axis of the fitting piece 3. Motor shaft 1 is provided with tooth 11 towards the one end of reduction gear input shaft 2, and tooth 11 extends the setting towards the direction that deviates from motor shaft 1, and tooth 11 and the design of motor shaft 1 formula as an organic whole. The one end of reduction gear input shaft 2 orientation motor shaft 1 is provided with tooth two 21, and tooth two 21 extends the setting towards the direction that deviates from reduction gear input shaft 2, and tooth two 21 and reduction gear input shaft 2 formula design as an organic whole. When the utility model discloses during the assembly connection, as shown in fig. 6, tooth one 11 sets up with tooth two 21 is crisscross, and tooth one 11, tooth two 21 correspond the meshing with flexible tooth 31.

The utility model provides a connection structure of motor and reduction gear, through set up tooth 11 and tooth two 21 in the integration respectively on motor shaft 1 and reduction gear input shaft 2, and set up fitting piece 3 between motor shaft 1 and reduction gear input shaft 2, make tooth one and tooth two 21 and the crisscross meshing of flexible tooth 31 on the fitting piece 3, form flexible connection structure, when the transmission moment of torsion, motor shaft 1 is through flexible tooth 31 with moment of torsion transmission reduction gear input shaft 2, vibrations and noise performance on the power transmission route have been improved, flexible tooth 31 can absorb the moment of torsion fluctuation that comes from the power supply, play the effect of buffering, the noise reduction, reduce simultaneously because of the vibration that the moment of torsion transmission brought, the stability and the overall reliability of power transmission have been improved, just the utility model discloses the wearing and tearing of reducible motor shaft 1 and reduction gear input shaft 2 junction, the life of extension diaxon. The utility model discloses with tooth 11 and tooth two 21 respectively the integration setting on motor shaft 1 and reduction gear input shaft 2, need not additionally to set up the coupling joint diaxon, can effectively shorten connection structure's axial length, need not to reserve the space of installing the shaft coupling accessory on motor shaft 1 and the reduction gear input shaft 2 simultaneously, radial dimension also can be done littleer, does benefit to the lightweight design of car.

As shown in fig. 1-4, the distance from one side of the first tooth 11 departing from the axis of the motor rotating shaft 1 to the axis of the motor rotating shaft 1 is less than or equal to the radius of the motor rotating shaft 1, and the distance from one side of the second tooth 21 departing from the reducer input shaft 2 to the axis of the reducer input shaft 2 is less than or equal to the radius of the reducer input shaft 2. The overall radial dimension of the two-axis tooth area is not larger than that of the two-axis body.

In the utility model discloses in, preferably the quantity of tooth one 11 and tooth two 21 is prime number, and the common divisor is few, does benefit to the transmission. In order to ensure effective meshing of the first tooth 11, the second tooth 21 and the flexible tooth 31, the first tooth 11 and the second tooth 21 are equal in number. Preferably, the number of the first tooth 11 and the second tooth 21 is 5.

As shown in fig. 6, the tooth surfaces of the first tooth 11 and the second tooth 21 are the same as the tooth surface of the flexible tooth 31, and when the first tooth 11 and the second tooth 21 are engaged with each other, the tooth surfaces of the first tooth 11 and the second tooth 21 are in contact with the tooth surface of the flexible tooth 31, that is, the first tooth 11 and the second tooth 21 are in surface contact with the flexible tooth 31, and are in surface transmission during power transmission, thereby ensuring effective transmission of torque and stability during torque transmission.

Preferably, the tooth surface of the flexible tooth 31 is an arc surface, which can play a centering role when the motor rotating shaft 1, the reducer input shaft 2 and the matching piece 3 are coaxially arranged, so that the running concentricity is better. Preferably, the tooth profile of the flexible teeth 31 is an involute tooth profile, namely, the tooth surface of the flexible teeth 31 is an involute tooth profile, so that the flexible teeth have strong bearing capacity, can effectively compensate coaxiality and angle errors of the driving end and the driven end, and rotate more stably.

The utility model discloses an in an embodiment, the material of fitting piece 3 is the rigidity material the utility model discloses an in another mode, fitting piece 3 is flexible material, and fitting piece 3 and flexible tooth 31 constitute flexible gear spare jointly, and in this embodiment, preferred flexible tooth 31 sets up with fitting piece 3 an organic whole, and it is more convenient to process, and better to the absorption effect of moment of torsion shock wave, and the stability of using is got up higher. The middle of the matching piece 3 is provided with a hole 32, so that the shearing deformation capability of the matching piece 3 can be improved, and the positioning of the matching piece 3 during installation is facilitated.

Claims

1. The utility model provides a connection structure of motor and reduction gear, characterized by includes motor shaft (1), reduction gear input shaft (2) and coaxial fitting piece (3) of setting between motor shaft (1), reduction gear input shaft (2), still includes flexible tooth (31) around fitting piece (3) axis setting in fitting piece (3) periphery, motor shaft (1) tip an organic whole is provided with tooth one (11), reduction gear input shaft (2) tip an organic whole is provided with tooth two (21), and tooth one (11) sets up with tooth two (21) are crisscross, and tooth one (11), tooth two (21) and flexible tooth (31) correspond the meshing.

2. The connection structure of the motor and the speed reducer as claimed in claim 1, wherein the distance from the surface of the first tooth (11) departing from the axis of the motor rotating shaft (1) to the axis of the motor rotating shaft (1) is less than or equal to the radius of the motor rotating shaft (1), and the distance from the surface of the second tooth (21) departing from the input shaft (2) to the axis of the input shaft (2) is less than or equal to the radius of the input shaft (2).

3. The connection structure of the motor and the reducer according to claim 1, wherein the number of the first teeth (11) and the second teeth (21) is prime.

4. A connection structure of a motor and a decelerator according to claim 1 or 3, wherein the number of the first teeth (11) is the same as the number of the second teeth (21).

5. A connection structure of a motor and a decelerator according to any one of claims 1 to 3, wherein the tooth surfaces of the first tooth (11) and the second tooth (21) are fitted to the tooth surface of the flexible tooth (31).

6. A connection structure of a motor and a decelerator according to claim 5, wherein the tooth surface of the flexible tooth (31) is a curved surface.

7. The connection structure of an electric motor and a speed reducer according to claim 6, wherein the tooth profile of the flexible teeth (31) is an involute tooth profile.

8. A connection structure of an electric motor and a speed reducer according to any one of claims 1-3, 6, and 7, wherein said mating member (3) is made of a flexible material.

9. A connection structure of an electric motor and a reducer, according to claim 8, characterized in that said flexible teeth (31) are integral with the counterpart (3).

10. A connection structure of a motor and a reducer as claimed in claim 8, characterized in that a hole (32) is provided in the middle of the fitting member (3).