CN216564718U

CN216564718U - Rear support assembly of motor

Info

Publication number: CN216564718U
Application number: CN202122679580.XU
Authority: CN
Inventors: 黄锦培
Original assignee: Jiangmen Hongyu Electronic Electric Appliance Co ltd
Current assignee: Jiangmen Hongyu Electronic Electric Appliance Co ltd
Priority date: 2021-11-03
Filing date: 2021-11-03
Publication date: 2022-05-17
Anticipated expiration: 2031-11-03

Abstract

The utility model discloses a rear support assembly of a motor, which comprises a rear support, rear support supporting legs, a motor shaft mounting hole, a bearing assembly, carbon brush plates and carbon brush sleeves, wherein the rear support supporting legs extend downwards from the left side and the right side of the bottom of the rear support to form supporting legs; the carbon brush plates are fixedly arranged at the front and rear ends of the bottom of the rear bracket through rivets and do not fall into the coverage range of the motor shaft mounting hole; the back support supporting legs are bent outwards to form a flat supporting leg plate, and the bottom of the supporting leg plate is provided with a positioning head which is positioned and installed with the stator core; and the middle lower part of the support leg of the rear support is provided with an arched ventilation hole for ventilation and heat dissipation at the position connected with the support leg plate.

Description

Rear support assembly of motor

Technical Field

The utility model relates to the technical field of motor installation parts, in particular to a rear support assembly of a motor.

Background

A front support and a rear support are generally installed at the front end and the rear end of a stator core of the motor to serve as supporting installation, and the front support and the rear support of the stator core are installed and matched with a rotating shaft to form a stable structure. The traditional rear support structure is more heavy than the front support structure in bearing and higher in supporting force requirement, so that the structure of the traditional rear support structure is more complex than that of the front support structure, and the thickness and the strength of the traditional rear support structure are also higher. In the prior art, due to the particularity of the rear bracket, the structure of the rear bracket is generally complex to play a role of strong support, and the size of the rear bracket is large; in addition, the rear support needs to be installed in a matched mode with the rotating shaft, connecting pieces such as bearings and the like which are installed in a matched mode with the rotating shaft need to be matched on the rear support, and related bearings are designed to be external; because the bearing external structure and the continuous friction with the rotating shaft during configuration can generate great noise during rotation of the rotating shaft, the bearing external structure can ensure that the bearing does not have any supporting point or limiting point during transverse positioning, gaskets or connecting pieces and the like capable of limiting the front end and the rear end of the bearing are required to be arranged on the rotating shaft, the use of parts is increased, and the structure is more complicated. Finally, the carbon brush box and the like are generally installed on the rear support, and related functions or structures are obviously arranged on the rear support for ventilation and heat dissipation of the rotor, the rotating shaft, the carbon brush box and the like, so that the improvement of the use efficiency of the motor or the prolonging of the service life is not facilitated.

Accordingly, certain improvements in the prior art rear bracket structures are needed.

Disclosure of Invention

The utility model aims to overcome the defects of the prior art and provides a rear support assembly of a motor, which reduces the noise when the bearing and a rotating shaft rotate in a matching way by adopting a mode that a bearing is internally arranged in the rear support, and meanwhile, a lubricating oil cavity connected with the rotating shaft is arranged in the rear support to keep the lubricating property of the bearing; holistic after-poppet assembly structure obtains simplifying, and stability is good, and intensity is high, also can realize the quick heat dissipation of pivot and carbon brush piece when the configuration is installed carbon brush piece, and the location is accurate when after-poppet and stator core installation, and simple to operate is swift.

The technical scheme adopted by the utility model for solving the technical problems is as follows: a rear support assembly of a motor comprises a rear support, rear support legs, a motor shaft mounting hole, a bearing assembly, carbon brush plates and carbon brush sleeves, wherein the rear support legs extend downwards from the left side and the right side of the bottom of the rear support to form support legs; the carbon brush plates are fixedly arranged at the front and rear ends of the bottom of the rear bracket through rivets and do not fall into the coverage range of the motor shaft mounting hole; the back support supporting legs are bent outwards to form a flat supporting leg plate, and the bottom of the supporting leg plate is provided with a positioning head which is positioned and installed with the stator core; and the middle lower part of the support leg of the rear support is provided with an arched ventilation hole for ventilation and heat dissipation at the position connected with the support leg plate.

Furthermore, a semicircular convex cavity which is matched with the bearing assembly and is provided with a plane top is arranged at the top of the rear support; the bearing assembly comprises a spherical oil-retaining bearing, a stainless steel clamping ring and oil cotton, wherein the upper middle part of the spherical oil-retaining bearing is arranged in the semicircular convex containing cavity, the top and the bottom of the spherical oil-retaining bearing are planar, the stainless steel clamping ring is fixedly arranged at one end of the bottom of the rear support, the other end of the stainless steel clamping ring supports and tightly supports the outer side of the lower part of the spherical oil-retaining bearing, and the oil cotton is arranged between the stainless steel clamping ring and the spherical oil-retaining bearing.

Furthermore, a spherical oil-retaining bearing mounting hole which is correspondingly matched and mounted with the motor shaft mounting hole is formed in the center of the spherical oil-retaining bearing.

Or, the top of the rear bracket is provided with a cylindrical bulge cavity matched with the bearing assembly; the bearing assembly comprises a rolling bearing which is completely arranged in the cylindrical bulge containing cavity and a bearing supporting plate which is arranged at the top of the rear bracket and corresponds to the bottom of the cylindrical bulge containing cavity and covers the bearing supporting plate to support the rolling bearing.

Furthermore, the center of the rolling bearing is provided with a rolling bearing mounting hole which is correspondingly matched and mounted with the motor shaft mounting hole, and the center of the bearing support plate is provided with a bearing support plate mounting hole which is correspondingly matched and mounted with the rolling bearing mounting hole.

Furthermore, a lubricating oil cavity which is communicated with the spherical oil-containing bearing or the rolling bearing and is provided with lubricating oil is arranged on the rear support.

Furthermore, reinforcing ribs are arranged on the outer side faces of the supporting legs of the rear support.

In conclusion, the rear bracket assembly of the motor adopts the mode that the bearing is internally arranged in the rear bracket, so that the noise generated when the bearing and the rotating shaft rotate in a matching way is reduced, and meanwhile, the lubricating oil cavity connected with the rotating shaft is arranged in the rear bracket to keep the lubricating property of the bearing; holistic after-poppet assembly structure obtains simplifying, and stability is good, and intensity is high, also can realize the quick heat dissipation of pivot and carbon brush piece when the configuration is installed carbon brush piece, and the location is accurate when after-poppet and stator core installation, and simple to operate is swift.

Drawings

Fig. 1 is a partial sectional view of a rear bracket assembly of an electric machine according to embodiment 1 of the present invention;

FIG. 2 is a left side view of FIG. 1;

fig. 3 is a plan view of a rear bracket assembly of an electric motor according to embodiment 1 of the present invention, without a carbon brush plate and a carbon brush cover;

fig. 4 is a bottom view of a rear bracket assembly of an electric motor according to embodiment 1 of the present invention without a carbon brush plate and a carbon brush cover;

fig. 5 is a partial sectional view of a rear bracket assembly of an electric machine according to embodiment 2 of the present invention;

fig. 6 is a left side view of fig. 5.

Detailed Description

Example 1

As shown in fig. 1, 2, 3 and 4, the rear bracket assembly of the motor described in this embodiment 1 includes a rear bracket 1, rear bracket legs 2 extending downward from the left and right sides of the bottom of the rear bracket to form legs, a motor shaft mounting hole 3 formed in the center of the rear bracket and fitted with a motor shaft, a bearing assembly 4 mounted on the rear bracket and located at the periphery of the motor shaft mounting hole, carbon brush plates 5 mounted on the front and rear ends of the rear bracket, and a carbon brush sleeve 6 mounted on the carbon brush plates; the carbon brush plates are fixedly arranged at the front and rear ends of the bottom of the rear bracket through rivets 7 and do not fall into the coverage range of the motor shaft mounting hole; the rear support leg is bent outwards to form a flat leg plate 8, and the bottom of the leg plate is provided with a positioning head 9 which is positioned and installed with the stator core; and the middle lower part of the support leg of the rear support is provided with an arched ventilation hole 11 for ventilation and heat dissipation at the position connected with the support leg plate.

In this embodiment 1, a semicircular convex accommodating cavity 12 which is installed in a matching manner with the bearing assembly and has a planar top is arranged at the top of the rear bracket; the bearing assembly comprises a spherical oil-retaining bearing 13, a stainless steel clamping ring 14 and oil cotton 15, wherein the upper middle part of the spherical oil-retaining bearing is arranged in a semicircular convex containing cavity, the top and the bottom of the spherical oil-retaining bearing are planar, the stainless steel clamping ring is fixedly arranged at one end of the bottom of the rear support, the other end of the stainless steel clamping ring supports and tightly supports the outer side of the lower part of the spherical oil-retaining bearing, and the oil cotton 15 is arranged between the stainless steel clamping ring and the spherical oil-retaining bearing.

In this embodiment 1, the center of the spherical oil retaining bearing is provided with a mounting hole 16 for the spherical oil retaining bearing, which is correspondingly matched with the mounting hole of the motor shaft.

In the embodiment 1, the rear bracket is provided with a lubricating oil chamber 17 which is communicated with the spherical oil-containing bearing and is provided with lubricating oil.

In the present embodiment 1, the outer side surface of the rear bracket leg is provided with a rib 18.

Example 2

The embodiment 2 is modified based on the embodiment 1, and the specific steps are as follows:

as shown in fig. 5 and 6, the top of the rear bracket of the embodiment 2 is provided with a cylindrical convex cavity 19 which is matched with the bearing assembly; the bearing assembly comprises a rolling bearing 20 which is completely arranged in the cylindrical bulge cavity, and a bearing support plate 21 which is arranged at the top of the rear bracket, corresponds to the bottom of the cylindrical bulge cavity and covers the rolling bearing.

In this embodiment 2, the central position of the rolling bearing is provided with a rolling bearing mounting hole 22 correspondingly matched and mounted with the motor shaft mounting hole, and the central position of the bearing support plate is provided with a bearing support plate mounting hole 23 correspondingly matched and mounted with the rolling bearing mounting hole.

The rear support assembly of the motor adopts a mode that the bearing is internally arranged in the rear support, so that the noise generated when the bearing and the rotating shaft rotate in a matching way is reduced, and meanwhile, a lubricating oil cavity connected with the rotating shaft is arranged in the rear support to keep the lubricating property of the bearing; holistic after-poppet assembly structure obtains simplifying, and stability is good, and intensity is high, also can realize the quick heat dissipation of pivot and carbon brush piece when the configuration is installed the carbon brush piece, and the location is accurate when after-poppet and stator core installation, and simple to operate is swift.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the structure of the present invention in any way. Any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A rear support assembly of a motor is characterized by comprising a rear support, rear support supporting legs, motor shaft mounting holes, bearing assemblies, carbon brush plates and carbon brush sleeves, wherein the rear support supporting legs extend downwards from the left side and the right side of the bottom of the rear support to form supporting legs; the carbon brush plate is fixedly arranged at the front and rear ends of the bottom of the rear bracket through rivets and does not fall into the coverage range of the motor shaft mounting hole; the back support supporting legs are bent outwards to form a flat supporting leg plate, and the bottom of the supporting leg plate is provided with a positioning head which is positioned and installed with the stator core; and the middle lower part of the support leg of the rear support is provided with an arched ventilation hole for ventilation and heat dissipation at the position connected with the support leg plate.

2. The rear bracket assembly of the motor as claimed in claim 1, wherein a semicircular convex cavity which is matched with the bearing assembly and has a flat top is arranged at the top of the rear bracket; the bearing assembly comprises a spherical oil-retaining bearing, a stainless steel clamping ring and oil cotton, wherein the upper middle part of the spherical oil-retaining bearing is arranged in the semicircular convex containing cavity, the top and the bottom of the spherical oil-retaining bearing are planar, the stainless steel clamping ring is fixedly arranged at one end of the bottom of the rear support, the other end of the stainless steel clamping ring supports and tightly supports the outer side of the lower part of the spherical oil-retaining bearing, and the oil cotton is arranged between the stainless steel clamping ring and the spherical oil-retaining bearing.

3. The rear bracket assembly of an electric machine according to claim 2, wherein the spherical oil retaining bearing is provided with a mounting hole at a center thereof, the mounting hole being correspondingly matched with the mounting hole of the motor shaft.

4. The rear bracket assembly of the motor as claimed in claim 1, wherein a cylindrical protrusion cavity matched with the bearing assembly is formed at the top of the rear bracket; the bearing assembly comprises a rolling bearing which is completely arranged in the cylindrical bulge containing cavity and a bearing supporting plate which is arranged at the top of the rear bracket and corresponds to the bottom of the cylindrical bulge containing cavity and covers the bearing supporting plate to support the rolling bearing.

5. The rear bracket assembly of an electric motor according to claim 4, wherein the central position of the rolling bearing is provided with a rolling bearing mounting hole correspondingly matched with the motor shaft mounting hole, and the central position of the bearing support plate is provided with a bearing support plate mounting hole correspondingly matched with the rolling bearing mounting hole.

6. The rear bracket assembly of an electric machine according to any one of claims 2 to 5, wherein the rear bracket is provided with a lubricating oil chamber with lubricating oil, which is connected and communicated with the spherical oil-containing bearing or the rolling bearing.

7. The rear bracket assembly of an electric machine according to claim 6, wherein the outer side of the rear bracket leg is provided with a reinforcing rib.