CN219918611U

CN219918611U - Counterweight structure and motor with same

Info

Publication number: CN219918611U
Application number: CN202222903434.5U
Authority: CN
Inventors: 尤福群; 李恒渊
Original assignee: Zhejiang Sunseeker Industrial Co ltd
Current assignee: Zhejiang Sunseeker Industrial Co ltd
Priority date: 2022-10-28
Filing date: 2022-10-28
Publication date: 2023-10-27
Anticipated expiration: 2032-10-28

Abstract

The utility model provides a counterweight structure and a motor with the counterweight structure, wherein the configuration structure comprises a plurality of blades arranged on a rotor assembly, the blades are in annular arrangement, a counterweight disc is arranged at the center of the blades in annular arrangement, division bars are arranged on the counterweight disc, a plurality of division bars are arranged on the counterweight disc, a groove body is formed in a region, which is positioned between adjacent division bars, on the counterweight disc, the groove body is configured to accommodate a counterweight, and the blades on the rotor assembly are in annular array arrangement; the parting strips on the balance weight plate are arranged in an annular array, and the straight line where the parting strips are located passes through the center of the balance weight plate. According to the outer rotor motor, the balancing piece is arranged in the groove body of the fan blade, so that the unbalance amount of the rotor can be effectively corrected, the rotor is balanced, and the influence on the performance of the motor caused by the unbalance of the rotor is reduced.

Description

Counterweight structure and motor with same

Technical Field

The utility model relates to the technical field of motors, in particular to a counterweight structure and an outer rotor motor with the counterweight structure.

Background

The unbalance of the rotor of the existing permanent magnet brushless direct current motor is generally corrected by subtracting materials, and the performance of the motor is affected to a certain extent.

Disclosure of Invention

The present utility model aims to solve the problems set forth in the background art.

The technical scheme adopted by the utility model is that the counterweight structure on the motor comprises a plurality of blades arranged on a rotor assembly, wherein the blades are in annular arrangement, a counterweight disc is arranged at the center of each blade in the annular arrangement, a plurality of division bars are arranged on the counterweight disc, a groove body is formed in a region, positioned between adjacent division bars, of the counterweight disc, and the groove body is configured to accommodate a counterweight.

Further, the blades on the rotor assembly are arranged in an annular array; the parting strips on the counterweight plate are arranged in an annular array.

Further, the straight line where the parting bead is located passes through the center of the weight plate.

Further, through holes are arranged between the adjacent fan blades.

Further, the weight plate is tapered with its tapered end facing the center side of the motor.

Further, the taper of the weight plate exceeds 2:1.

further, the taper of the weight plate is at 7:1 to 10:1.

an outer rotor motor comprises a stator assembly, a rotating shaft and a rotor assembly, wherein the rotor assembly is provided with the counterweight structure, the rotor assembly is connected with the rotating shaft, and the rotating shaft is rotatable relative to the stator assembly.

Further, the stator assembly comprises a stator, the stator is provided with X salient poles, Y groove bodies are arranged on the rotor assembly, and Y=2X.

Further, an interface is provided at the center of the weight plate, and the interface is configured to be connectable with the rotating shaft.

In summary, the beneficial effects of the utility model are as follows: according to the outer rotor motor, the balancing piece is arranged in the groove body of the fan blade, so that the unbalance amount of the rotor can be effectively corrected, the rotor is balanced, and the influence on the performance of the motor caused by the unbalance of the rotor is reduced.

Drawings

Fig. 1 is a schematic diagram of the overall structure of an external rotor motor in the present utility model;

FIG. 2 is a schematic diagram showing the separation of the stator and the rotor of the external rotor motor according to the present utility model;

FIG. 3 is a front view of the weight plate portion of FIG. 1;

fig. 4 is a cross-sectional view of a portion of a weight plate.

Detailed Description

The following further details of embodiments of the present utility model with reference to the accompanying drawings, it should be noted that the examples are only illustrative of the utility model and should not be taken as limiting the utility model, and all the features disclosed in the examples of the present utility model, or all the steps in the methods or processes disclosed, can be combined in any way except mutually exclusive features and/or steps.

Example 1.

The utility model provides a counterweight structure on a motor, which is used for solving the problem of unbalanced motor rotors caused by that one side of the rotor is unbalanced and the other side of the rotor is unbalanced. In this embodiment, the weight member is a dynamic balance mud.

Preferably, the tank 11 is exposed to the outside, which is convenient for adding dynamic balance mud.

Preferably, the rotor assembly 10 is provided with a plurality of blades 12, the blades 12 are annularly arranged, the center of the annularly arranged blades 12 is provided with a counterweight plate 13, the counterweight plate 13 is provided with a plurality of division bars 14, and the counterweight plate 13 is provided with a plurality of groove bodies 11 in the areas between the adjacent division bars 14. Further, the blades 12 on the rotor assembly 10 are arranged in an annular array; the parting strips 14 on the weight plate 13 are arranged in an annular array, and the straight line where the parting strips 14 are located passes through the center of the weight plate 13.

Preferably, through holes 15 are arranged between the adjacent fan blades 12, and the through holes 15 are beneficial to heat dissipation of the motor and facilitate the use of super power of the motor in some cases. In the present embodiment, the through holes 15 are arranged in the radial direction of the rotor assembly 10, so that air passes through the fan blades 12 substantially in the radial direction of the rotor assembly 10.

Preferably, the weight plate 13 has a tapered shape with its tapered end facing the center side of the motor. Further, the taper (ratio of bottom circle diameter to taper height) of the weight plate 13 exceeds 2:1, further, the taper of the weight plate 13 is 7:1 to 10:1.

preferably, the weight plate 13 is centrally provided with an interface 16, and the interface 16 is configured to be coupled to the rotating shaft 40 such that the rotor assembly 10 can rotate the rotating shaft 40.

Preferably, the rotating shaft 40 is provided with a rough surface 41, and the rough surface 41 on the rotating shaft 40 is used for connecting with the plug-in interface 16.

Example 2.

The embodiment provides an external rotor motor, which comprises a stator assembly 30, a rotating shaft 40 and a rotor assembly 10, wherein the rotor assembly 10 is provided with a counterweight structure in embodiment 1, the rotor assembly 10 is connected with the rotating shaft 40, and the rotating shaft 40 is rotatable relative to the stator assembly 30.

Preferably, the stator assembly 30 includes a stator 31, the stator 31 has X salient poles 32, and Y slots 11, y=2x, i.e., twice the number of slots 11 as salient poles 32 are provided on the rotor assembly 10.

Preferably, the stator 31 is hollow inside, and the rotating shaft 40 passes through the stator 31 without contacting with the hollow hole inside the stator 31.

Preferably, the stator assembly 30 includes a support 33, the support 33 is fixedly connected with the stator 31, and the support 33 is in rotating fit connection with the rotating shaft 40.

The foregoing is merely illustrative of specific embodiments of the utility model, and the scope of the utility model is not limited thereto, but is intended to cover any variations or alternatives not covered by the inventive subject matter, and therefore, the scope of the utility model is defined by the appended claims.

Claims

1. The counterweight structure is characterized by comprising a plurality of blades arranged on a rotor assembly, wherein the blades are annularly arranged, a counterweight disc is arranged at the center of each annularly arranged blade, a plurality of division bars are arranged on the counterweight disc, a groove body is formed in the counterweight disc in a region between every two adjacent division bars, and the groove body is configured to accommodate a counterweight piece.

2. The counterweight structure of claim 1, wherein the blades on the rotor assembly are arranged in an annular array; the parting strips on the counterweight plate are arranged in an annular array.

3. The weight construction of claim 1 wherein the parting bead is positioned in a straight line through the center of the weight plate.

4. The counterweight structure of claim 1, wherein through holes are provided between adjacent fan blades.

5. The weight structure according to claim 1, wherein the weight plate has a tapered shape with a tapered end facing a center side of the motor.

6. The weight construction of claim 1 wherein the weight plate taper exceeds 2:1.

7. the weight construction of claim 6 wherein the weight plate has a taper of 7:1 to 10:1.

8. an electric machine, characterized by comprising a stator assembly, a rotating shaft and a rotor assembly, wherein the rotor assembly is provided with a counterweight structure according to any one of claims 1 to 7, the rotor assembly is connected with the rotating shaft, and the rotating shaft is rotatable relative to the stator assembly.

9. The electric machine of claim 8 wherein the stator assembly comprises a stator having X salient poles and Y slots, Y = 2X, are provided on the rotor assembly.

10. The motor of claim 8, wherein the weight plate has a socket at a center thereof, the socket being configured to be coupled to the rotating shaft.