Surface-mounted injection molding rotor

Abstract

The utility model discloses a surface-mounted injection molding rotor, which comprises a stator and magnetizing positioning columns, a rotating groove is arranged in the stator, a rotor is arranged in the rotating groove, a plurality of groups of magnetizing positioning columns are annularly connected in the rotor, a rotor iron core is arranged in the rotor, a plurality of embedding grooves are annularly arranged on the surface of the rotor iron core, and the embedding grooves are embedded in the rotor iron core. The rotor is embedded with the magnetizing positioning columns through the embedding grooves, and the two ends of each magnetizing positioning column sink by 2mm relative to the top and the bottom of the rotor, so that the rubbing between the magnetizing positioning columns and the stator is avoided, the plurality of groups of annularly connected magnetizing positioning columns are arranged in the rotor, and the embedding grooves in the surface of the rotor iron core are embedded with the magnetizing positioning columns, so that the magnetizing positioning columns are prevented from being scratched. The rotor is accurately positioned in the magnetizing process, the rotor iron core is difficult to rotate, the phenomenon that the rotor iron core is deviated during magnetizing due to rotation of the rotor is effectively avoided, the uniformity and the accuracy of rotor magnetizing are ensured, and the performance and the stability of the motor are further improved.

Description

Technical Field

[0001] This utility model belongs to the field of motor rotor technology, specifically relating to a surface-mount injection molded rotor. Background Technology

[0002] As the core equipment that converts electrical energy into mechanical energy, electric motors are widely used in various fields such as industrial production, transportation, and smart homes. The rotor, which is surface-mounted and injection molded, is an important component of the motor, and its performance directly determines the overall working efficiency, stability, and service life of the motor. However, during the manufacturing process of the rotor, it is necessary to magnetize it.

[0003] In the existing traditional rotor manufacturing process, the working principle is to use a magnetizer to generate a strong external magnetic field. When the rotor is placed in this magnetic field, under the action of the magnetic force, the originally disordered magnetic domains inside the rotor gradually become aligned, thereby giving the rotor stable and strong magnetism. The magnetization quality directly affects the performance and stability of the motor. Traditional magnetization methods often cannot guarantee the uniformity and accuracy of rotor magnetization. Since the rotor is not fixed, the iron core inside the rotor is prone to magnetization deviation when it rotates. Magnetization deviation will lead to uneven magnetic field distribution of the rotor, causing problems such as torque fluctuation, vibration and increased noise during motor operation. Utility Model Content

[0004] The purpose of this invention is to provide a surface-mount injection molded rotor to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a surface-mount injection molded rotor, comprising:

[0006] The stator has a rotating slot inside and a rotor is disposed inside the rotating slot;

[0007] The magnetic positioning column is provided in several groups and the magnetic positioning column is connected in a ring inside the rotor. The rotor is provided with a rotor core. The surface of the rotor core is provided with several fitting grooves in a ring. The rotor fits into the magnetic positioning column through the fitting grooves.

[0008] Preferably, the stator contains a stator core.

[0009] Preferably, the two ends of the magnetized positioning column are recessed by mm relative to the top and bottom of the rotor.

[0010] Preferably, the rotor has a plurality of positioning holes arranged in a ring shape at its top.

[0011] Preferably, the rotor is provided with a plurality of magnetic slots.

[0012] Preferably, the bottom of the stator is connected to a shaft hole.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] (1) By setting several sets of magnetizing positioning columns connected in a ring inside the rotor, and using the fitting groove on the surface of the rotor core to fit with the magnetizing positioning columns, the rotor is accurately positioned during the magnetization process, and the rotor core is difficult to rotate. This effectively avoids the phenomenon of rotor core bias caused by rotor rotation during magnetization, ensuring the uniformity and accuracy of rotor magnetization, thereby improving the performance and stability of the motor.

[0015] (2) The design of the magnetizing positioning column being 2mm lower than the top and bottom of the rotor avoids the magnetizing positioning column from rubbing against the stator, further improving the reliability of motor operation and reducing maintenance costs and downtime. Attached Figure Description

[0016] Figure 1 This is a first-view structural schematic diagram of the present invention;

[0017] Figure 2 This is a structural schematic diagram of the present invention from a second perspective;

[0018] Figure 3 This is a schematic diagram of the rotor structure of this utility model;

[0019] Figure 4 This is a cross-sectional view of the present invention.

[0020] In the diagram: 1. Stator; 2. Rotating slot; 3. Rotor; 4. Magnetized positioning post; 5. Rotor core; 6. Fitting slot; 7. Stator core; 8. Positioning hole; 9. Magnet slot; 10. Shaft hole. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] This utility model provides, for example Figure 1-4 The surface-mount injection-molded rotor shown includes:

[0023] Stator 1, wherein a rotating groove 2 is provided inside the stator 1 and a rotor 3 is provided inside the rotating groove 2;

[0024] The magnetic positioning column 4 is provided in several groups and the magnetic positioning column 4 is connected in a ring inside the rotor 3. The rotor 3 is provided with a rotor core 5. The surface of the rotor core 5 is provided with several fitting grooves 6 in a ring. The rotor 3 is fitted with the magnetic positioning column 4 through the fitting grooves 6.

[0025] The stator 1 is provided with a stator core 7.

[0026] The two ends of the magnetized positioning column 4 are recessed by 2mm relative to the top and bottom of the rotor 3. This 2mm recess design avoids the magnetized positioning column 4 rubbing against the stator 1, further improving the reliability of motor operation.

[0027] The rotor 3 has several positioning holes 8 arranged in a ring shape on its top.

[0028] The rotor 3 is provided with several magnetic steel slots 9, which can be used to place magnets.

[0029] The stator 1 has a shaft hole 10 connected to its bottom, and the motor shaft can be inserted into the shaft hole 10 to connect with external equipment and drive the external equipment to operate.

[0030] The surface-mount injection-molded rotor generates a strong external magnetic field through a magnetizer. When the rotor 3 is placed in this magnetic field, the permanent magnets inside the rotor 3 (the magnets located in the magnet slots 9) change under the action of the magnetic force. The originally disordered magnetic domains inside the permanent magnets gradually become aligned, thereby giving the permanent magnets a stable and strong magnetism and completing the magnetization process. During this process, the magnetization positioning column 4 is fitted into the fitting slot 6 of the rotor core 5 to firmly fix the rotor core 5, preventing the rotor core 5 from rotating or displacing during the magnetization process. This ensures the consistency of the magnetic field received by each part of the permanent magnet and ensures the uniformity and accuracy of the magnetization.

[0031] After the rotor 3 is magnetized, the motor is powered on, causing the stator 1 winding to generate a rotating magnetic field. At this time, the fixed magnetic field generated by the permanent magnet of the magnetized rotor 3 interacts with the rotating magnetic field of the stator 1. According to the law of electromagnetic force, under the mutual attraction and repulsion of the two magnetic fields, the rotor 3 will be subjected to electromagnetic torque and thus begin to rotate. During the rotation of the rotor 3, the rotor core 5, as a magnetic guiding component, guides the distribution of the magnetic field, so that the energy of the magnetic field is more effectively converted into the mechanical energy of the rotor 3, realizing the efficient conversion of electrical energy into mechanical energy, and driving the motor to drive the operation of external equipment.

[0032] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A surface-mount injection-molded rotor, characterized by, Include: The stator (1) is provided with a rotating groove (2), and the rotating groove (2) is provided with a rotor (3); The magnetization positioning column (4) is provided with a plurality of groups and a plurality of magnetization positioning columns (4) are connected in a ring shape in the rotor (3), the rotor (3) is provided with a rotor core (5), the surface of the rotor core (5) is provided with a plurality of embedded grooves (6) in a ring shape, and the rotor (3) is embedded with the magnetization positioning column (4) through the embedded groove (6).

2. A surface mount injection molded rotor as set out in claim 1, characterized in that: The stator (1) is provided with a stator core (7).

3. A surface mount injection molded rotor as set out in claim 1, wherein: The both ends of the magnetization positioning column (4) are sunken by 2mm relative to the top and bottom of the rotor (3).

4. A surface mount injection molded rotor as set out in claim 1, wherein: The top of the rotor (3) is provided with a plurality of positioning holes (8) in a ring shape.

5. A surface mount injection molded rotor as set out in claim 1, wherein: The rotor (3) is provided with a plurality of magnetic steel grooves (9).

6. A surface mount injection molded rotor as set out in claim 1, wherein: The bottom of the stator (1) is connected with a shaft hole (10).

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