Motor rotor

Abstract

The utility model provides a motor rotor, and belongs to the technical field of motor rotors. The problem that the service life of an existing external rotor motor is affected due to over-high internal temperature after long-term working is solved. The motor rotor comprises an outer rotor shell, the outer rotor shell comprises a side wall and a bottom cover, the side wall and the bottom cover are integrally formed, the bottom cover is provided with a through hole for a motor shaft to penetrate through, the through hole is provided with an extension wall, the extension wall is provided with a fan, and the bottom cover is provided with a plurality of first ventilation holes. The cooling structure has the advantages of cooling the external rotor motor and the like.

Description

Technical Field

[0001] This utility model belongs to the field of motor rotor technology, and specifically relates to a motor rotor. Background Technology

[0002] Motor rotor: This is the rotating component of an electric motor. An electric motor consists of two parts: the rotor and the stator. It is a device used to convert electrical energy into mechanical energy and vice versa. Motor rotors are divided into electric motor rotors and generator rotors.

[0003] Existing motor rotors are prone to overheating during long-term operation, and prolonged operation at high temperatures can lead to a reduction in service life. Summary of the Invention

[0004] The purpose of this invention is to address the aforementioned problems in the existing technology by providing a motor rotor.

[0005] The purpose of this utility model can be achieved through the following technical solution: a motor rotor, characterized in that it includes an outer rotor housing, the outer rotor housing includes a side wall and a bottom cover, the side wall and the bottom cover are integrally formed, the bottom cover is provided with a through hole for the motor shaft to pass through, an extension wall is provided at the through hole, a fan is installed on the extension wall, and a plurality of first ventilation holes are provided on the bottom cover.

[0006] The working principle of this utility model is as follows: During installation, the permanent magnet is installed first, followed by the stator. The stator has a top cover, and the stator and motor shaft are directly installed at the through hole, which can achieve a fixing effect. At the same time, the top cover and the side wall will close. When the side wall rotates, it will drive the fan to rotate, allowing outside air to enter the motor through the first ventilation hole, which can dissipate heat for both the rotor and the stator, prevent the rotor from working at high temperature for a long time, and increase its service life.

[0007] In the aforementioned motor rotor, a fixed connecting seat is provided on the extended wall, and the fixed connecting seat is used to install permanent magnets.

[0008] In the aforementioned motor rotor, the fixed connecting block includes a connecting arc block, multiple extension strips, and a fixed arc block, wherein the extension strips are used to connect the connecting arc block and the fixed arc block.

[0009] In the aforementioned motor rotor, a groove is provided on the extended wall, and the connecting arc block is used to engage with the groove.

[0010] In the aforementioned motor rotor, the outer diameter of the fixed arc block and the inner diameter of the sidewall are the same.

[0011] In the aforementioned motor rotor, the fixed arc block is provided with multiple clearance grooves for mounting permanent magnets.

[0012] In the aforementioned motor rotor, a second ventilation hole is provided between the two relief grooves.

[0013] Compared with the prior art, this utility model has the advantage of being able to cool the rotor. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model.

[0015] Figure 2 This is a schematic diagram of the structure of the bottom cover of this utility model.

[0016] Figure 3 This is a cross-sectional structural diagram of the present invention.

[0017] In the diagram, 1 is the side wall; 2 is the bottom cover; 3 is the through hole; 4 is the extension wall; 5 is the fan; 6 is the first ventilation hole; 7 is the fixed connecting seat; 8 is the permanent magnet; 9 is the connecting arc block; 10 is the extension strip; 11 is the fixed arc block; 12 is the groove; 13 is the clearance groove; and 14 is the second ventilation hole. Detailed Implementation

[0018] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0019] like Figures 1-3 As shown, the rotor of this motor includes an outer rotor housing, which includes a side wall 1 and a bottom cover 2. The side wall 1 and the bottom cover 2 are integrally formed. The bottom cover 2 is provided with a through hole 3 for the motor shaft to pass through. An extension wall 4 is provided at the through hole 3. A fan 5 is installed on the extension wall 4. A plurality of first ventilation holes 6 are provided on the bottom cover 2.

[0020] To elaborate further, a fixed connecting seat 7 is provided on the extension wall 4. The fixed connecting seat 7 is used to install the permanent magnet 8. The use of the fixed connecting seat 7 makes it easy to install the permanent magnet 8.

[0021] To elaborate further, the fixed connecting block includes a connecting arc block 9, multiple extension strips 10, and a fixed arc block 11. The extension strips 10 are used to connect the connecting arc block 9 and the fixed arc block 11. This arrangement is used to reduce the impact of the fixed connecting block on the fan 5.

[0022] To elaborate further, a groove 12 is provided on the extension wall 4, and a connecting arc block 9 is used to fit into the groove 12. This feature is designed to facilitate the quick installation of the fixing connecting block.

[0023] To elaborate further, the outer diameter of the fixed arc block 11 is the same as the inner diameter of the side wall 1. This arrangement ensures that the two fit together tightly, while also ensuring that the permanent magnet 8 fits together tightly.

[0024] To elaborate further, the fixed arc block 11 is provided with multiple clearance grooves 13 for the installation of the permanent magnet 8, which facilitates the quick installation of the permanent magnet 8.

[0025] To elaborate further, a second ventilation hole 14 is provided between the two relief grooves 13. This arrangement is used to increase the airflow, so that it can further cool the side wall 1.

[0026] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

[0027] Although this document uses a large number of technical terms, the possibility of using other terms is not excluded. These terms are used merely for the convenience of describing and explaining the essence of this invention; interpreting them as any additional limitation would contradict the spirit of this invention.

Claims

1. A motor rotor, characterized in that, The device includes an outer rotor housing, which includes a side wall (1) and a bottom cover (2). The side wall (1) and the bottom cover (2) are integrally formed. The bottom cover (2) is provided with a through hole (3) for the motor shaft to pass through. An extension wall (4) is provided at the through hole (3). A fan (5) is installed on the extension wall (4). The bottom cover (2) is provided with a plurality of first ventilation holes (6).

2. A motor rotor according to claim 1, characterized in that, A fixed connecting seat (7) is provided on the extension wall (4), and the fixed connecting seat (7) is used to install the permanent magnet (8).

3. A motor rotor according to claim 2, characterized in that, The fixed connecting block includes a connecting arc block (9), multiple extension strips (10) and a fixed arc block (11), wherein the extension strips (10) are used to connect the connecting arc block (9) and the fixed arc block (11).

4. A motor rotor according to claim 3, characterized in that, A groove (12) is provided on the extension wall (4), and the connecting arc block (9) is used to fit into the groove (12).

5. A motor rotor according to claim 3, characterized in that, The outer diameter of the fixed arc block (11) is the same as the inner diameter of the side wall (1).

6. A motor rotor according to claim 3, characterized in that, The fixed arc block (11) is provided with a plurality of clearance grooves (13) for mounting permanent magnets (8).

7. A motor rotor according to claim 6, characterized in that, A second ventilation hole (14) is provided between the two relief grooves (13).

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