Motor rotor fixing mechanism and motor

Abstract

The utility model discloses a fixing mechanism of a motor rotor and a motor, comprising a motor rotor having a rotor iron core and a rotor shaft, the rotor shaft is connected with the rotor iron core, the fixing mechanism also comprises a shaft sleeve and a riveting piece which are matched with each other, the shaft sleeve is pressed on one side of the rotor shaft, and the shaft sleeve applies pressure along the axial direction of the rotor shaft to the rotor iron core. The end face, deviating from the shaft sleeve, of the rotor shaft is provided with a riveting piece, and the motor rotor is made to abut against the shaft sleeve through pressing riveting, so that the connection strength between the motor rotor and the shaft sleeve can be effectively enhanced, and the installation efficiency and the fixing effect of the motor rotor can also be improved. Meanwhile, the stability and reliability of the motor rotor are enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of motors, and in particular to a fixing mechanism for a motor rotor and a motor. Background Art

[0002] At present, the motor rotor is usually installed and fixed by an assembly method such as that disclosed in the invention patent CN106026468A. However, due to the complex structure of the existing motor rotor fixing mechanism, the installation process is also complicated, the fixing effect is not ideal, and it also has an adverse effect on the stability and reliability of the motor rotor. Utility Model Content

[0003] Therefore, in order to solve the above problems, the utility model provides a fixing mechanism for a motor rotor and a motor, which not only has a simple structure, but also can improve the installation efficiency and fixing effect of the motor rotor, and at the same time enhance the stability and reliability of the motor rotor.

[0004] To achieve the above purpose, the technical solution provided by the utility model is as follows:

[0005] The utility model provides a fixing mechanism for a motor rotor, comprising a motor rotor having a rotor core and a rotor shaft, wherein the rotor shaft is connected to the rotor core, and further comprises a matching shaft sleeve and a rivet; the shaft sleeve is pressed onto one side of the rotor shaft, and the shaft sleeve applies an axial pressure to the rotor core along the rotor shaft so that the shaft sleeve abuts against the side surface of the rotor core corresponding thereto; the end surface of the rotor shaft facing away from the shaft sleeve is riveted with the rivet so that the motor rotor is close to the shaft sleeve.

[0006] Furthermore, center lines of the rotor core, the rotor shaft and the sleeve coincide with each other.

[0007] Furthermore, the rivet is a self-clinching screw or a self-clinching stud.

[0008] Furthermore, the shaft sleeve is a 40Cr shaft sleeve, a 35CrMo shaft sleeve or a 42CrMo shaft sleeve.

[0009] Furthermore, a bracket of the motor is arranged between the rotor shaft and the rivet, and the rivet passes through the bracket and is inserted into the rotor shaft.

[0010] Furthermore, the rotor core is a soft magnetic steel core.

[0011] The utility model provides a motor, which at least comprises the above-mentioned fixing mechanism of the motor rotor.

[0012] The technical solution provided by the utility model has the following beneficial effects:

[0013] The sleeve is pressed onto one side of the rotor shaft and the end face of the rotor shaft facing away from the sleeve is riveted to effectively enhance the connection strength between the motor rotor and the sleeve, thereby preventing the motor rotor from loosening or shifting during the operation of the motor, and improving the stability and reliability of the motor rotor. The structure is simple and the installation is simple and quick, thereby reducing installation time and labor costs, thereby improving the production efficiency of the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 Shown is a cross-sectional view of the fixing mechanism of the motor rotor in the first embodiment. DETAILED DESCRIPTION

[0015] To further illustrate the various embodiments, the present invention provides drawings. These drawings are part of the disclosure of the present invention, which are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, a person of ordinary skill in the art should be able to understand other possible implementations and advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0016] The utility model is now further described in conjunction with the accompanying drawings and specific implementation methods.

[0017] Embodiment 1

[0018] Reference Figure 1 As shown, embodiment 1 provides a fixing mechanism for a motor rotor (hereinafter referred to as the fixing mechanism), the fixing mechanism includes a motor rotor having a rotor core 1 and a rotor shaft 2, the rotor shaft 2 is connected to the rotor core 1, the fixing mechanism also includes a matching sleeve 3 and a rivet 4, the sleeve 3 is pressed on one side of the rotor shaft 2, and the sleeve 3 applies an axial pressure to the rotor core 1 along the rotor shaft 2, so that the sleeve 3 abuts against the left side surface of the rotor core 1 corresponding thereto, and the right end surface of the rotor shaft 2 away from the sleeve 3 is riveted with a rivet 4, and through the riveting process, the motor rotor is close to the sleeve 3.

[0019] In this embodiment, the specific rivet 4 is a self-clinching screw or a self-clinching stud, and the rotor shaft 2 is the rotation center of the motor rotor, and plays an important role in transmitting power and supporting the motor rotor.

[0020] The shaft sleeve 3 is arranged on the left side of the rotor shaft 2, and the motor rotor is fixed by press-fitting the shaft sleeve 3 to achieve a close fit between the shaft sleeve 3 and the motor rotor, thereby ensuring the stability of the motor rotor in its axial direction.

[0021] The right end surface of the rotor shaft 2 facing away from the shaft sleeve 3 is riveted to further enhance the connection strength between the motor rotor and the shaft sleeve 3, thereby preventing the motor rotor from loosening or shifting during the operation of the motor.

[0022] The shaft sleeve 3 is pressed onto one side of the rotor shaft 2 and the end face of the rotor shaft 2 facing away from the shaft sleeve 3 is riveted to effectively enhance the connection strength between the motor rotor and the shaft sleeve 3, thereby preventing the motor rotor from loosening or shifting during the operation of the motor, and improving the stability and reliability of the motor rotor. The structure is simple and the installation is simple and quick, which can reduce installation time and labor costs, thereby improving the production efficiency of the motor.

[0023] Of course, the fixing mechanism of this embodiment is not limited to Figure 1 The cross-sectional shape of the shaft sleeve 3 shown may also be other cross-sectional shapes.

[0024] In another preferred embodiment, the sleeve 3 is a 40Cr sleeve. The 40Cr high-strength material has high strength and hardness, can withstand greater pressure and torque, ensures that the sleeve 3 does not deform during the press-fitting process, and can also maintain good stability during long-term operation of the motor.

[0025] In a specific implementation, the rotor core 1 is a soft magnetic steel core, which is made of soft magnetic steel and has good magnetic properties and magnetic conductivity to improve the efficiency and output power of the motor.

[0026] According to different motor models and application scenarios, the size and constituent materials of the shaft sleeve 3 and the rotor core 1 can be flexibly adjusted to meet different customer needs. By selecting high-strength materials and reasonable installation and fixing methods, the service life of the motor rotor can be extended and the maintenance cost can be reduced. Therefore, the fixing mechanism of this embodiment has broad application prospects and promotion value in the field of motor technology.

[0027] In addition, other related components, such as sensors, clutches, etc., are arranged inside the rotor shaft 2 to work in coordination with the motor rotor.

[0028] The installation method of the fixing mechanism of this specific embodiment is as follows:

[0029] First, the rotor core 1 is placed in the middle of the rotor shaft 2, and it is ensured that the center lines of the rotor core 1, the rotor shaft 2 and the sleeve 3 coincide with each other.

[0030] Then, the shaft sleeve 3 is pressed onto the motor rotor from the left side thereof, and then the shaft sleeve 3 and the motor rotor are tightly combined by pressure.

[0031] Next, a riveting operation is performed on the right end face of the motor rotor, that is, the rivet 4 is passed through the bracket 5 of the motor, and then inserted into the right end of the rotor shaft 2, with the bracket 5 as a fixed support point, and a preload force is applied to the rotor shaft 2 in the direction of the sleeve 3 through the rivet 4, so that the motor rotor applies corresponding pressure or preload force to the sleeve 3, so as to further strengthen the connection strength between the motor rotor and the sleeve 3.

[0032] Finally, the rotor shaft 2 with the rotor core 1 installed thereon is installed into the housing of the motor, and other related components are installed inside the rotor shaft 2 .

[0033] Of course, in other embodiments, the sleeve 3 may be a 35CrMo sleeve or a 42CrMo sleeve, or may be made of a lower-cost high-strength steel, or may be made of a composite material with higher strength, lighter weight and higher cost.

[0034] Embodiment 2

[0035] Embodiment 2 provides a motor, which at least includes the fixing mechanism of the motor rotor of embodiment 1.

[0036] The sleeve is pressed onto one side of the rotor shaft and the end face of the rotor shaft facing away from the sleeve is riveted to effectively enhance the connection strength between the motor rotor and the sleeve, thereby preventing the motor rotor from loosening or shifting during the operation of the motor, and improving the stability and reliability of the motor rotor. The structure is simple and the installation is simple and quick, thereby reducing installation time and labor costs, thereby improving the production efficiency of the motor.

[0037] Although the present invention has been specifically demonstrated and described in conjunction with the preferred embodiments, those skilled in the art should understand that various changes may be made to the present invention in form and detail without departing from the spirit and scope of the present invention as defined in the appended claims, all of which are within the scope of protection of the present invention.

Claims

1. A fixing mechanism for a motor rotor, comprising a motor rotor having a rotor core and a rotor shaft, wherein the rotor shaft is connected to the rotor core, and characterized in that: Also includes matching bushings and rivets; The sleeve is press-fitted on one side of the rotor shaft, and the sleeve applies pressure along the axial direction of the rotor shaft to the rotor core, so that the sleeve abuts against the side surface of the rotor core corresponding thereto; The end surface of the rotor shaft facing away from the shaft sleeve is riveted with the rivet so that the motor rotor is close to the shaft sleeve.

2. The fixing mechanism for the motor rotor according to claim 1, characterized in that: The center lines of the rotor core, the rotor shaft and the sleeve coincide with each other.

3. The fixing mechanism for the motor rotor according to claim 1, characterized in that: The rivet is a self-clinching screw or a self-clinching stud.

4. The fixing mechanism for the motor rotor according to any one of claims 1 to 3, characterized in that: The shaft sleeve is a 40Cr shaft sleeve, a 35CrMo shaft sleeve or a 42CrMo shaft sleeve.

5. The fixing mechanism for the motor rotor according to any one of claims 1 to 3, characterized in that: A bracket of the motor is arranged between the rotor shaft and the rivet, and the rivet passes through the bracket and is inserted into the rotor shaft.

6. The fixing mechanism for the motor rotor according to any one of claims 1 to 3, characterized in that: The rotor core is a soft magnetic steel core.

7. A motor, characterized in that: At least comprises the fixing mechanism of the motor rotor as described in any one of claims 1-4.

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