CN219287296U

CN219287296U - Motor rotor shaft

Info

Publication number: CN219287296U
Application number: CN202320139527.7U
Authority: CN
Inventors: 何旭; 陈利丽; 詹慧慧
Original assignee: Ningbo Unior Forging Co ltd
Current assignee: Ningbo Unior Forging Co ltd
Priority date: 2023-02-07
Filing date: 2023-02-07
Publication date: 2023-06-30
Anticipated expiration: 2033-02-07

Abstract

The utility model discloses a motor rotor shaft, and relates to the technical field of motor accessories. The utility model comprises a middle shaft, wherein the middle shaft comprises a fixed end cover, a fan-shaped shaft piece and an end fixing piece; the number of the fan-shaped shaft pieces is three, and the three fan-shaped shaft pieces are spliced to form a main body frame outside the middle shaft; the end fixing pieces are clamped at two ends of any sector shaft piece; the fixed end cover is connected with two ends of any sector shaft piece through the same threads, an extension shaft is integrally arranged in the middle of the outer side of the fixed end cover, the fixed end cover is installed between the fixed end cover and the sector shaft piece in a reinforcing mode through bolts, threads for assembling the fixed end cover are arranged on the arc-shaped peripheral side of the end portion of the sector shaft piece, and a special-shaped groove for assembling the end portion fixing piece is formed in the inner side of the end portion of the sector shaft piece. According to the utility model, the middle shaft is arranged to replace the existing motor rotor shaft structure, so that the installation of the electronic rotor shaft can be facilitated, and the replacement of the electronic rotor shaft in the later stage can be facilitated.

Description

Motor rotor shaft

Technical Field

The utility model belongs to the technical field of motor accessories, and particularly relates to a motor rotor shaft.

Background

The motor is an electromagnetic device for converting or transmitting electric energy according to the law of electromagnetic induction, or converting one form of electric energy into another form of electric energy, and is composed of a stator, a rotor and other accessories, wherein the rotor is used for cutting a rotating magnetic field of the stator to generate induced electromotive force and current, and forming electromagnetic torque to enable the motor to rotate.

Most of the existing motor rotor structures are composed of armatures, coils, rotating shafts and other accessories, the existing motor rotor structures are used as rotating shafts of transmission structures, the existing multi-position integrated structure in the market can ensure structural stability, but the structure stability is achieved by means of stamping in the process of transferring, and the whole rotating shafts are required to be replaced after part of the rotating shaft surfaces are damaged, so that the processing and using cost of the rotor are improved.

Therefore, the present utility model provides a spliced rotating shaft to solve the above-mentioned problems.

Disclosure of Invention

The utility model aims to provide a motor rotor shaft, which solves the problems that the existing motor rotor shaft is finished by stamping in the rotating process, and the whole rotating shaft needs to be replaced after the part of the surface of the rotating shaft is damaged by changing the original integrated motor rotor shaft into a spliced motor rotor shaft, so that the processing and using cost of the rotor are improved.

In order to solve the technical problems, the utility model is realized by the following technical scheme:

the utility model relates to a motor rotor shaft, which comprises a central shaft, wherein the central shaft comprises a fixed end cover, a fan-shaped shaft piece and an end part fixing piece;

the number of the fan-shaped shaft pieces is three, and the three fan-shaped shaft pieces are spliced to form the outer main body frame of the middle shaft; the end fixing pieces are clamped at two ends of any sector shaft piece; the fixed end covers are also in threaded connection with the two ends of any sector shaft.

Further, an extension shaft is integrally arranged in the middle of the outer side of the fixed end cover, and the fixed end cover is fixedly arranged between the fan-shaped shaft piece through bolts.

Further, the arc-shaped circumferential side of the fan-shaped shaft end is provided with threads for the assembly of the fixed end cover, and the inner side of the fan-shaped shaft end is provided with a special-shaped groove for the assembly of the end fixing piece.

Further, the middle of the end fixing piece is in a cylindrical shape, and the peripheral side of the cylindrical part of the middle of the end fixing piece is attached to the inner side of the fan-shaped shaft piece.

Further, the motor further comprises an armature and a fixing seat, wherein the armature is fixedly sleeved outside the center shaft through the fixing seat, and a coil is wound on the armature.

Furthermore, the armature, the fixing seat and the center shaft are all metal pieces, and the armature is formed by combining a plurality of metal chucks.

The utility model has the following beneficial effects:

according to the utility model, the middle shaft is arranged to replace the existing motor rotor shaft structure, so that the installation of the electronic rotor shaft and the replacement of the electronic rotor shaft in the later period can be facilitated;

the specific application of the shaft is as follows: the three sector shaft parts included in the middle shaft are combined to penetrate through the fixed seat and the armature structure, the end parts of the three sector shaft parts are kept flush, then the end fixing parts are plugged into cavities formed between the end parts of the sector shaft parts, the end fixing parts are in interference fit with the sector shaft parts, the sector shaft parts are kept in close contact with each other under the bidirectional extrusion of the end fixing parts and the external fixing end covers, the assembly of the middle shaft is completed, and the middle shaft structure does not need to be forced to be punched into the armature and the fixed seat in the same way as the traditional assembly mode.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of an application scenario of the present utility model;

FIG. 2 is an end schematic view of the body structure of the present utility model;

fig. 3 is an exploded view of the main structure of the present utility model.

In the drawings, the list of components represented by the various numbers is as follows:

1. a center shaft; 11. fixing the end cover; 12. an extension shaft; 13. a fan shaft; 14. an end fixing member; 2. an armature; 3. a fixing seat.

Detailed Description

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model.

Referring to fig. 1-3, the utility model is a rotor shaft of an electric motor, comprising a central shaft 1, wherein the central shaft 1 comprises a fixed end cover 11, a fan-shaped shaft element 13 and an end fixing element 14;

the number of the fan-shaped shaft pieces 13 is three, and the three fan-shaped shaft pieces 13 are spliced to form an outer main body frame of the middle shaft 1; the end fixing pieces 14 are clamped at two ends of any sector shaft piece 13; the fixed end covers 11 are also connected with the two ends of any sector shaft piece 13 in a threaded manner;

the three fan-shaped shaft parts 13 included in the middle shaft 1 are combined to penetrate through the fixed seat 3 and the armature 2, the end parts of the three fan-shaped shaft parts 13 are kept flush, then the end fixing parts 14 are plugged into cavities formed between the end parts of the fan-shaped shaft parts 13, the end fixing parts 14 and the fan-shaped shaft parts 13 are in interference fit, the fan-shaped shaft parts 13 are kept in close contact with each other under the bidirectional extrusion of the end fixing parts 14 and the external fixing end cover 11, and the assembly of the middle shaft 1 is completed, so that the structure of the middle shaft 1 does not need to be forced to be punched into the armature 2 and the fixed seat 3 in the same manner as the traditional assembly mode.

As shown in fig. 1, the motor rotor shaft further comprises an armature 2 and a fixed seat 3, wherein the armature 2 is fixedly sleeved outside the center shaft 1 through the fixed seat 3, and the armature 2 is wound with a coil;

the armature 2, the fixed seat 3 and the middle shaft 1 are all metal pieces, and the armature 2 is formed by combining a plurality of metal chucks;

the assembly modes among the middle shaft 1, the armature 2 and the fixed seat 3 are all common position assembly in the market, the original structure of the armature 2 and the fixed seat 3 is not described too much, and the armature 2 is wound with coils, so that a magnetic field is formed in the armature 2 whenever current flows in the coils.

As shown in fig. 2, an extension shaft 12 is integrally arranged in the middle of the outer side of the fixed end cover 11, and the fixed end cover 11 is fixedly arranged between a bolt and a fan-shaped shaft piece 13;

the extension shaft 12 is shorter, is used for replacing the original shaft body end, is responsible for being connected with an external structure, and after the fixed end cover 11 is assembled with the fan-shaped shaft piece 13 through threads, even if the rotor structure is in a positive and negative rotation phenomenon under the reinforcement of bolts, the fixed end cover 11 cannot be separated from the fan-shaped shaft piece 13.

Wherein, as shown in fig. 3, the arc circumference side of the end of the fan-shaped shaft 13 is provided with a screw thread for fixing the end cap 11, and the inside of the end of the fan-shaped shaft 13 is provided with a special-shaped groove for fixing the end fixing piece 14;

after the assembly between the fan-shaped shaft piece 13 and the end fixing piece 14 is completed, the fixed end cover 11 is rotationally assembled to the end part of the fan-shaped shaft piece 13, the end part of the fan-shaped shaft piece 13 is provided with a round angle for gradually deepening the rotation of the fixed end cover 11, and the special-shaped groove arranged in the end part of the fan-shaped shaft piece 13 is used for further limiting the fan-shaped shaft piece 13 by the end fixing piece 14;

the middle of the end fixing piece 14 is in a cylindrical shape, and the periphery of the cylindrical part of the middle of the end fixing piece 14 is attached to the inner side of the fan-shaped shaft piece 13;

the peripheral side of the cylindrical part of the end fixing piece 14 is in interference fit with the inner arc-shaped side of the fan-shaped shaft piece 13, so that the end fixing piece 14 and the fan-shaped shaft piece 13 are mutually extruded, and the end fixing piece is used for assisting in fixing the end cover 11 together to fix the fan-shaped shaft piece 13 without position deviation.

In the description of the present utility model, it should be noted that the azimuth or positional relationship indicated by the terms "vertical", "upper", "lower", "horizontal", etc. are based on the azimuth or positional relationship shown in the drawings, and 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 referred to must have a specific azimuth, be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present utility model.

In the description of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present utility model, and the present utility model is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present utility model has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. An electric motor rotor shaft, characterized by comprising

A central shaft (1), wherein the central shaft (1) comprises a fixed end cover (11), a fan-shaped shaft piece (13) and an end fixing piece (14);

the number of the fan-shaped shaft pieces (13) is three, and the three fan-shaped shaft pieces (13) are spliced to form an outer main body frame of the middle shaft (1); the end fixing pieces (14) are clamped at two ends of any fan-shaped shaft piece (13); the fixed end covers (11) are also connected with the two ends of any sector shaft (13) in a threaded manner.

2. The motor rotor shaft according to claim 1, characterized in that the outer middle part of the fixed end cover (11) is integrally provided with an extension shaft (12), and the fixed end cover (11) is fixedly mounted with the fan-shaped shaft element (13) through bolts.

3. A motor rotor shaft according to claim 1, characterized in that the arcuate peripheral side of the end of the fan-shaped shaft member (13) is provided with a screw thread for the fitting of the fixed end cap (11), and the inside of the end of the fan-shaped shaft member (13) is provided with a profiled groove for the fitting of the end fixing member (14).

4. A rotor shaft for an electric machine according to claim 1, characterized in that the middle of the end fixing member (14) is cylindrically arranged, and the peripheral side of the middle cylindrical portion of the end fixing member (14) is fitted to the inner side of the fan-shaped shaft member (13).

5. The motor rotor shaft according to claim 1, further comprising an armature (2) and a fixing base (3), wherein the armature (2) is fixedly sleeved outside the center shaft (1) through the fixing base (3), and the armature (2) is wound with a coil.

6. The motor rotor shaft according to claim 5, wherein the armature (2), the fixing base (3) and the center shaft (1) are all metal pieces, and the armature (2) is formed by combining a plurality of metal chucks.