Motor rotor

Abstract

The utility model discloses a motor rotor, and relates to the technical field of motor rotors. The rotor comprises a rotor body, one end of the rotor body is provided with a first cavity and a second cavity communicated with the first cavity, and the diameter of the first cavity is larger than that of the second cavity; the plurality of raised lines are uniformly distributed on the outer side wall of the rotor body, and the raised lines are arranged in an inclined manner. According to the utility model, through the arrangement of the first cavity and the second cavity, the assembly process of the rotor body is more convenient, the situation that the rotor body cannot be replaced due to the shielding effect of a baffle in the prior art is reduced, the replacement efficiency of the rotor body is improved, and the influence on the working performance of the motor is reduced.

Description

Technical Field

[0001] The utility model belongs to the field of motor rotors, and specifically relates to a motor rotor. Background Art

[0002] Common permanent magnet motors include two types: asynchronous start permanent magnet motors and variable frequency permanent magnet motors. Due to their good operating performance and high efficiency, permanent magnet motors are widely used in refrigeration compressors. At present, most rotors of asynchronous start permanent magnet motors and variable frequency permanent magnet motors use baffles to limit and fix the magnetic steel. However, the effect of using baffles to limit the magnetic steel is poor, and support components such as rivets are required when installing the baffles, which increases the cost and operation time. Moreover, when the magnetism of the magnetic steel weakens, the magnetic steel cannot be replaced due to the shielding effect of the baffle. In addition, when assembling by hot sleeve, high temperature will cause the magnetism of the magnetic steel to weaken, and coupled with the inability to replace the magnetic steel, it will affect the working performance of the motor.

[0003] Therefore, a motor rotor is proposed to solve the above drawbacks. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a motor rotor.

[0005] To solve the above technical problem, the basic concept of the technical solution adopted by the utility model is:

[0006] A motor rotor includes a rotor body. One end of the rotor body is provided with a first cavity and a second cavity communicating with the first cavity, and the diameter of the first cavity is larger than that of the second cavity.

[0007] A plurality of convex strips evenly arranged on the outer side wall of the rotor body, and the convex strips are inclined.

[0008] Optionally, a plurality of protrusions are evenly arranged at the opening of the first end of the rotor body, and the plurality of protrusions are arranged in a circular array. A first fillet is provided at the opening of the first cavity.

[0009] Optionally, a second fillet is provided at the contact between the first cavity and the second cavity, a third fillet is provided at the second end of the rotor body, an annular pad is installed on the outer side wall of the rotor body, and the convex strip is installed on the outer side wall of the annular pad.

[0010] After adopting the above technical solution, the utility model has the following beneficial effects compared with the prior art. Of course, any product implementing the utility model does not necessarily need to achieve all the advantages described below:

[0011] The provided first cavity and second cavity make the assembly process of the rotor body more convenient, reduce the difficulty of replacement due to the shielding effect of the baffle in the prior art, improve the replacement efficiency of the rotor body, and reduce the impact on the working performance of the motor.

[0012] The following further describes in detail the specific embodiments of the present invention with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The following drawings in the description are only some embodiments. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts. In the accompanying

[0014] In the figures:

[0015] Figure 1 is a schematic three-dimensional structure of an embodiment of the present invention Figure 1 ;

[0016] Figure 2 is a schematic three-dimensional structure of an embodiment of the present invention Figure 2 .

[0017] In the drawings, the list of components represented by each reference numeral is as follows:

[0018] Rotor body 1, first cavity 101, second cavity 102, protrusion 103, first fillet 104, second fillet 105, annular gasket 106, rib 107, third fillet 108.

[0019] It should be noted that these drawings and text descriptions are not intended to limit the scope of the concept of the present invention in any way, but to illustrate the concept of the present invention to those skilled in the art by referring to specific embodiments. SPECIFIC EMBODIMENTS

[0020] Now, the present invention will be further described in detail with reference to the accompanying drawings.

[0021] Please refer to Figure 1-2 As shown, in this embodiment, a motor rotor is provided, including a rotor body 1. One end of the rotor body 1 is provided with a first cavity 101 and a second cavity 102 communicating with the first cavity 101. The diameter of the first cavity 101 is larger than that of the second cavity 102;

[0022] A plurality of ribs 107 evenly distributed on the outer side wall of the rotor body 1 are inclined.

[0023] At the open end of the first end of the rotor body 1 in this embodiment, a plurality of protrusions 103 are evenly distributed. The plurality of protrusions 103 are arranged in a circular array, and a first fillet 104 is provided at the opening of the first cavity 101.

[0024] At the contact between the first cavity 101 and the second cavity 102 of this embodiment, a second rounded corner 105 is provided. At the second end of the rotor body 1, a third rounded corner 108 is provided. An annular pad 106 is installed on the outer side wall of the rotor body 1, and a rib 107 is installed on the outer side wall of the annular pad 106.

[0025] Working principle:

[0026] During assembly, first assemble the two rotor bodies 1 end to end, and then the assembly of the rotor body 1 is completed.

[0027] The provided first cavity 101 and second cavity 102 make the assembly process of the rotor body 1 more convenient, reduce the inability to replace due to the shielding effect of the baffle in the prior art, improve the replacement efficiency of the rotor body 1, and reduce the impact on the working performance of the motor.

[0028] It should be noted that:

[0029] The present utility model is a motor rotor, including: rotor body 1, first cavity 101, second cavity 102, protrusion 103, first rounded corner 104, second rounded corner 105, annular pad 106, rib 107, third rounded corner 108. The components are all common standard components or components known to those skilled in the art. Their structures and principles can all be known by technicians through technical manuals or through conventional experimental methods.

[0030] The present utility model is not limited to the above embodiments. Anyone should know that structural changes made under the inspiration of the present utility model, as long as they have the same or similar technical solutions as the present utility model, all fall within the protection scope of the present utility model. The technologies, shapes, and structures not described in detail in the present utility model are all well-known technologies.

Claims

1. A motor rotor, characterized in that: include: A rotor body (1), wherein one end of the rotor body (1) is provided with a first cavity (101) and a second cavity (102) connected to the first cavity (101), and the diameter of the first cavity (101) is greater than the diameter of the second cavity (102); A plurality of convex strips (107) are evenly distributed and mounted on the outer side wall of the rotor body (1), and the convex strips (107) are arranged in an inclined manner.

2. A motor rotor according to claim 1, characterized in that: A plurality of protrusions (103) are evenly distributed and installed at the opening of the first end of the rotor body (1), and the plurality of protrusions (103) are arranged in a circular array.

3. The motor rotor according to claim 1, characterized in that: A first rounded corner (104) is provided at the opening of the first cavity (101).

4. The motor rotor according to claim 1, characterized in that: A second rounded corner (105) is provided at the contact point between the first cavity (101) and the second cavity (102).

5. The motor rotor according to claim 1, characterized in that: The second end of the rotor body (1) is provided with a third fillet (108).

6. The motor rotor according to claim 1, characterized in that: An annular gasket (106) is mounted on the outer side wall of the rotor body (1), and the convex strip (107) is mounted on the outer side wall of the annular gasket (106).

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