Rotor structure of high-speed motor

Abstract

The utility model belongs to the technical field of vehicle-mounted motors. A rotor structure of a high-speed motor comprises a rotor framework of a laminated structure, the rotor framework is divided into an upper part and a lower part, the upper part and the lower part of the rotor framework are of the laminated structure, the upper part and the lower part of the rotor framework are coaxial and are arranged in a staggered mode, and retainers are arranged at the two ends of the rotor framework. A rotor shaft penetrates through the middle of the rotor framework. The utility model provides a rotor structure of a high-speed motor, which can effectively improve the operation quality of the motor, can completely adapt to the working occasion of the high-speed motor, and is more compact and reasonable in overall structure. The technical problems that in the prior art, an existing motor rotor is single in structure and cannot adapt to the working state of a high-speed motor mostly, and the overall working stability is poor are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle-mounted motors, and in particular to a rotor structure of a high-speed motor. Background Art

[0002] The current mainstream electronic actuator system uses independent motors to provide power, and uses an integrated controller and several high-precision sensors for precise control, which can provide different working outputs according to different working conditions.

[0003] Based on the current development trend of miniaturization and high power of electronic actuators, especially ultra-high speed actuators such as air pumps, the motor is required to reach a speed of more than 10,000 rpm under many working conditions. How to improve stability and product adaptability while meeting the needs of the entire vehicle is a problem that needs to be solved urgently, so it is necessary to improve. Summary of the invention

[0004] The present invention provides a rotor structure for a high-speed motor which can effectively improve the running quality of the motor, can fully adapt to the working environment of the high-speed motor, and has a more compact and reasonable overall structure; it solves the technical problems existing in the prior art that the structure of the current motor rotor is relatively simple, often cannot adapt to the working state of the high-speed motor, and has poor overall working stability.

[0005] The above technical problems of the present invention are solved by the following technical solutions: a rotor structure of a high-speed motor, including a rotor frame of a laminated structure, the rotor frame is composed of two parts, the upper and lower parts of the rotor frame are both laminated structures, the upper and lower parts of the rotor frame are coaxial, and the upper and lower parts of the rotor frame are staggered, a retaining frame is provided at both ends of the rotor frame, and a rotor shaft is penetrated through the middle of the rotor frame. The rotor frame in the utility model is composed of two parts, the upper and lower parts of the rotor frame are both formed by stacking laminations, and the upper and lower parts of the rotor frame are staggered at an angle, which can effectively reduce the tooth slot torque and improve the dynamic balance, accurately control the assembly gap between the magnetic steel and the rotor, and ensure that the gap between the magnetic steel and the rotor after assembly is uniform, avoiding the problem of magnetic field instability and performance degradation, and the staggered installation can make the magnetic field distribution closer to the sine waveform, reduce harmonic loss, and improve the efficiency and performance of the motor. In addition, it can also reduce the vibration and noise during the operation of the motor, thereby improving the overall operation quality of the motor, which is particularly suitable for the application of the high-speed motor.

[0006] Preferably, the rotor skeleton is composed of a plurality of superimposed plum blossom-shaped laminations, and the upper and lower parts of the rotor skeleton are staggered at an angle. The rotor skeleton in the utility model is composed of two parts, and the upper and lower parts of the rotor skeleton are both superimposed plum blossom-shaped laminations, and the upper and lower parts of the rotor skeleton are staggered at an angle, which can effectively reduce the tooth slot torque and improve the dynamic balance.

[0007] Preferably, a plurality of mounting holes are provided inside the upper and lower parts of the rotor frame, and a magnetic steel is provided in each mounting hole, and the magnetic steel is a laminated structure. The magnetic steel is inserted into the rotor frame to ensure the stability of the magnetic steel under high-speed operation conditions, and the assembly gap between the magnetic steel and the rotor is precisely controlled to ensure that the gap between the magnetic steel and the rotor is uniform after assembly, thereby avoiding the problems of magnetic field instability and performance degradation. The staggered installation can make the magnetic field distribution closer to the sine waveform, reduce harmonic loss, and improve the efficiency and performance of the motor. In addition, it can also reduce the vibration and noise of the motor during operation, thereby improving the overall operation quality of the motor, which is particularly suitable for the application of the high-speed motor.

[0008] Preferably, a through hole is provided at the center of the rotor frame, and the rotor shaft and the retaining frame are installed through the through hole. The through hole sleeve at the center of the rotor frame is used to be arranged on the retaining frame.

[0009] Preferably, the retaining frame is an I-shaped structure, and the rotor frame is sleeved and mounted on the retaining frame. The rotor frame is mounted on the copper retaining frame, which can fix the magnetic steel on the one hand and protect the rotor frame from damage during assembly on the other hand.

[0010] Preferably, the two ends of the retainer are provided with balancing holes. Balancing holes are drilled on both sides of the rotor frame according to the overall mass distribution to further optimize the dynamic balance, improve the running stability, and reduce the noise and vibration of the product during operation.

[0011] Preferably, the retainer as a whole is interference fit with the rotor shaft. The rotor shaft passes through the retainer, and the two are interference fit to ensure overall stability.

[0012] Therefore, the rotor structure of a high-speed motor of the present invention has the following advantages: the running quality of the motor can be effectively improved through the laminated structure and the staggered angle, the rotor structure can fully adapt to the working environment of the high-speed motor, and the overall structure is more compact and reasonable. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a three-dimensional structural schematic diagram of a rotor structure of a high-speed motor of the utility model.

[0014] Figure 2 yes Figure 1 Schematic diagram of the main structure.

[0015] Figure 3 yes Figure 1 Schematic diagram of the rear view structure.

[0016] Figure 4 yes Figure 1 Schematic diagram of the structure viewed from above.

[0017] Figure 5 yes Figure 1 Schematic diagram of the three-dimensional structure of the multifunctional cover.

[0018] In the figure, there are rotor frame 1, mounting hole 2, magnetic steel 3, retaining frame 4, rotor shaft 5, and balancing hole 6. DETAILED DESCRIPTION

[0019] The technical solution of the invention is further specifically described below through embodiments and in conjunction with the accompanying drawings.

[0020] Example:

[0021] like Figure 1 and 2 As shown in 3, 4 and 5, a rotor structure of a high-speed motor includes a rotor frame 1 of a laminated structure. The rotor frame 1 is divided into an upper and lower part. The upper and lower parts of the rotor frame 1 are coaxial and both of them are laminated structures.

[0022] The upper and lower parts of the rotor frame 1 are both formed by stacking a number of plum blossom-shaped laminations, and the upper and lower parts of the rotor frame 1 are arranged at staggered angles.

[0023] A through hole is provided in the middle of the rotor frame 1 , and a plurality of arc-shaped mounting holes 2 are provided in the upper and lower parts of the rotor frame 1 . A magnetic steel 3 is installed in each mounting hole 2 , and the magnetic steel 3 is a laminated structure.

[0024] A retainer 4 is installed at both ends of the rotor frame 1. The retainer 4 is a copper I-shaped structure. The upper and lower parts of the rotor frame 1 are sleeved on the retainer 4. A rotor shaft 5 is installed through the middle of the retainer 4. The retainer 4 is interference fitted on the rotor shaft 5.

[0025] Different numbers of balancing holes 6 are formed at both ends of the retaining frame 4 .

[0026] The rotor frame 1 in the present invention is composed of two parts, and the upper and lower parts of the rotor frame 1 are both formed by superimposing plum blossom-shaped laminations, and the upper and lower parts of the rotor frame 1 are staggered at angles, which can effectively reduce the tooth slot torque and improve the dynamic balance, and accurately control the assembly gap between the magnetic steel 3 and the rotor, so as to ensure that the gap between the magnetic steel 3 and the rotor after assembly is uniform, avoid the problems of magnetic field instability and performance degradation, and the staggered installation can make the magnetic field distribution closer to the sine waveform, reduce harmonic losses, and improve the efficiency and performance of the motor. In addition, it can also reduce the vibration and noise during the operation of the motor, thereby improving the overall operation quality of the motor, which is particularly suitable for the application of the high-speed motor.

[0027] The magnetic steel 3 is inserted into the rotor frame 1 to ensure the stability of the magnetic steel 3 under high-speed operation conditions.

[0028] The rotor frame 1 is mounted on a copper holder 4 , which can fix the magnetic steel 3 on one hand and protect the rotor frame 1 from damage during assembly on the other hand.

[0029] Balancing holes 6 are drilled on both sides of the rotor frame 1 according to the overall mass distribution to further optimize the dynamic balance, improve the operating stability, and reduce the noise and vibration of the product during operation.

Claims

1. A rotor structure of a high-speed motor, characterized in that: The invention comprises a rotor frame of a laminated structure, wherein the rotor frame is composed of an upper and a lower part, both of which are laminated structures, are coaxial, and are staggered, retaining frames are arranged at both ends of the rotor frame, and a rotor shaft is penetrated through the middle of the rotor frame.

2. The rotor structure of a high-speed motor according to claim 1, characterized in that: The rotor frame is formed by stacking a number of plum blossom-shaped laminations, and the upper and lower parts of the rotor frame are staggered at angles.

3. The rotor structure of a high-speed motor according to claim 2, characterized in that: A plurality of mounting holes are provided inside the upper and lower parts of the rotor frame, and a magnetic steel is arranged in each mounting hole, and the magnetic steel is a laminated structure.

4. The rotor structure of a high-speed motor according to claim 3, characterized in that: A through hole is provided at the center of the rotor frame, and the rotor shaft and the retaining frame are installed through the through hole.

5. The rotor structure of a high-speed motor according to claim 1, characterized in that: The retaining frame is an I-shaped structure, and the rotor frame is sleeved and installed on the retaining frame.

6. The rotor structure of a high-speed motor according to claim 5, characterized in that: Both ends of the retaining frame are provided with balancing holes.

7. The rotor structure of a high-speed motor according to claim 6, characterized in that: The retaining frame as a whole is interference fit with the rotor shaft.

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