Built-in permanent magnet motor rotor structure

Abstract

The utility model belongs to the technical field of built-in permanent magnet motors, and particularly relates to a built-in permanent magnet motor rotor structure, which comprises a motor, a motor stator is fixedly mounted on one side of the motor, a motor rotor is fixedly mounted on the inner side of the motor stator, and a plurality of permanent magnet mounting grooves are formed in the front side of the motor rotor. Permanent magnets are arranged on the inner sides of the permanent magnet mounting grooves, the permanent magnet mounting grooves are formed in the position, above the motor, of the device, so that the permanent magnets can be mounted on the inner sides of the permanent magnet mounting grooves, the magnetic poles of the permanent magnets are opposite to those of the permanent magnets on the two sides, and after the permanent magnets are mounted on the inner sides of the permanent magnet mounting grooves, the permanent magnets can be mounted in the permanent magnet mounting grooves. The fixing bolt is controlled to lock the permanent magnet, the fixing bolt penetrates through the connecting groove in the upper portion of the permanent magnet and is in bolt engagement with the threaded hole, the fixing bolt is in an inverted-T shape, the largest portion of the fixing bolt can be placed on the inner side of the containing groove, and the fixing bolt is not prone to interfering with other assemblies after being installed.

Description

Technical Field

[0001] The utility model relates to the technical field of built-in permanent magnet motors, in particular to a rotor structure of a built-in permanent magnet motor. Background Art

[0002] Permanent magnet motors have significant characteristics such as high power density, high efficiency, and high reliability, and have been widely used in the fields of human production and life. However, due to the shortage of rare earth permanent magnet resources, the manufacturing cost of rare earth permanent magnet motors has become a bottleneck for the large-scale application of this type of motor. Therefore, hybrid rare earth permanent magnets have potential application prospects in permanent magnet motors, and improving the torque, efficiency and other performance of this type of motor has become a topic that experts and scholars at home and abroad are competing to study; the built-in hybrid rare earth permanent magnet motor uses permanent magnets of two different materials for excitation, and the hybrid permanent magnet magnetic field interacts with the magnetic field generated by the stator armature winding to form a rotating air gap magnetic field, which in turn causes the rotor to rotate;

[0003] The announcement number CN 109617279 B discloses a built-in permanent magnet motor rotor structure, including 3n rotor modules (n=1, 2, 3...), a rotating shaft, rare earth permanent magnets and non-rare earth permanent magnets, and has the following characteristics: the 3n rotor modules are composed of three basic rotor structures, the three rotor modules occupy a rotor circumferential angle of 120° / n, and permanent magnet slots for embedding permanent magnets are provided on the three rotor modules;

[0004] When it is used, during the installation of the permanent magnet, colloid is needed to install and connect the motor and the permanent magnet. After connecting them with the colloid, a drying device is needed to quickly air-dry the colloid, so that the staff needs to wait for a long time before they can proceed to the next step, resulting in low work efficiency. Therefore, we propose a built-in permanent magnet motor rotor structure. Utility Model Content

[0005] The utility model aims to provide a built-in permanent magnet motor rotor structure to solve the existing problems.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A built-in permanent magnet motor rotor structure comprises a motor, a motor stator is fixedly mounted on one side of the motor, a motor rotor is fixedly mounted on the inner side of the motor stator, a plurality of permanent magnet mounting grooves are opened on the front side of the motor rotor, permanent magnets are arranged on the inner sides of the permanent magnet mounting grooves, and threaded holes are opened on the inner sides of the permanent magnet mounting grooves.

[0008] By adopting the above technical scheme, the motor manufacturing can directly proceed to the next step after the permanent magnet is installed, so that the work efficiency is increased; the permanent magnet installation groove and the permanent magnet are in a V-shape, and the permanent magnet poles on both sides of the permanent magnet are opposite; so that the permanent magnets can affect each other after installation.

[0009] As a further improvement of the above solution, the permanent magnet installation groove and the permanent magnet are in a V-shape, and the permanent magnet poles on both sides of the permanent magnet are opposite.

[0010] By adopting the above technical solution, multiple permanent magnets can influence each other, thereby improving the working efficiency of the motor.

[0011] As a further improvement of the above solution, a fixing bolt is installed on the inner thread of the threaded hole, the fixing bolt is in a convex shape, and the threaded hole is meshed with the fixing bolt.

[0012] By adopting the above technical solution, the device can be connected more conveniently and quickly, and the staff can disassemble and maintain the motor at a later time, making it more convenient to disassemble and assemble the motor at a later time.

[0013] As a further improvement of the above solution, a connecting groove is provided on the front side of the permanent magnet, and a receiving groove is provided on the inner side of the connecting groove.

[0014] By adopting the above technical solution, the connecting groove and the receiving groove make it easier for the track bolts to protrude, so that when the rotating shaft is installed with other components, the fixing bolts are less likely to interfere, and the rotating shaft is more stable during rotation.

[0015] As a further improvement of the above solution, the inner diameter of the connecting groove is the same as the outer diameter of the fixing bolt at the smallest point, and the inner diameter of the receiving groove is the same as the inner diameter of the fixing bolt at the largest point.

[0016] By adopting the above technical solution, the fixing bolts can enhance the integration of the motor and the permanent magnet after installation, making it less likely for the fixing bolts to interfere with each other.

[0017] As a further improvement of the above solution, a rotating shaft is fixedly mounted on the front side of the motor.

[0018] By adopting the above technical solution, the rotating shaft can be installed with other components, so that the motor can drive other components to rotate through the rotating shaft.

[0019] Compared with the prior art, the beneficial effects of the utility model are:

[0020] The device is provided with a plurality of permanent magnet installation grooves above the motor, so that the permanent magnet can be installed on the inner side of the permanent magnet installation groove, and the permanent magnet has opposite magnetic poles to the permanent magnets on both sides. After the permanent magnet is installed on the inner side of the permanent magnet installation groove, the fixing bolt is controlled to lock the permanent magnet, so that the fixing bolt passes through the connecting groove above the permanent magnet and is bolt-engaged with the threaded hole, and the fixing bolt is in a convex shape, so that the largest part of the fixing bolt can be placed on the inner side of the receiving groove, so that the fixing bolt is not easy to interfere with other components after installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0022] Figure 1 A three-dimensional structural schematic diagram of a built-in permanent magnet motor rotor structure proposed by the utility model;

[0023] Figure 2 It is a partial three-dimensional structural schematic diagram of a rotor structure of an internal permanent magnet motor proposed by the utility model;

[0024] Figure 3 for Figure 2 Schematic diagram of the structure of part A in FIG.

[0025] In the figure: 1. motor; 2. motor stator; 3. motor rotor; 4. permanent magnet mounting slot; 5. permanent magnet; 6. threaded hole; 7. connecting slot; 8. storage slot; 9. rotating shaft. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] refer to Figure 1-3A built-in permanent magnet motor rotor structure includes a motor 1, a motor stator 2 is fixedly installed on one side of the motor 1, a motor rotor 3 is fixedly installed on the inner side of the motor stator 2, a plurality of permanent magnet mounting grooves 4 are opened on the front side of the motor rotor 3, permanent magnets 5 are arranged on the inner side of the permanent magnet mounting grooves 4, and threaded holes 6 are opened on the inner side of the permanent magnet mounting grooves 4; the installation of the permanent magnets 5 is relatively convenient and quick, and after the permanent magnets 5 are installed, the manufacture of the motor 1 can directly proceed to the next step, so that the work efficiency is increased; the permanent magnet mounting grooves 4 and the permanent magnets 5 are in a V-shape, and the permanent magnets 5 on both sides of the permanent magnets 5 have opposite magnetic poles; the permanent magnets 5 can affect each other after installation.

[0028] A fixing bolt is installed on the inner thread of the threaded hole 6, and the shape of the fixing bolt is a convex shape. The threaded hole 6 is meshed with the fixing bolt; the fixing bolt makes the connection between the motor 1 and the permanent magnet 5 more stable, improves reliability, and improves work efficiency, reduces manufacturing costs, and facilitates later disassembly and maintenance; a connecting groove 7 is provided on the front side of the permanent magnet 5, and a receiving groove 8 is provided on the inner side of the connecting groove 7, so that the connecting groove 7 and the receiving groove 8 can receive the fixing bolt, so that after the permanent magnet 5 is installed by the fixing bolt, the fixing bolt is not easy to protrude, so that the device has a strong sense of integration and is more stable when connected and installed with other components.

[0029] The inner diameter of the connecting groove 7 is the same as the outer diameter of the fixing bolt at the smallest part, and the inner diameter of the receiving groove 8 is the same as the inner diameter of the fixing bolt at the largest part, so that after the fixing bolt enters the inner side of the threaded hole 6, the remaining part can be inside the connecting groove 7 and the receiving groove 8, so that the fixing bolt locks the permanent magnet 5 more stably. A rotating shaft 9 is fixedly installed on the front side of the motor 1; the cooperation of the motor stator 2, the motor rotor 3 and the plurality of permanent magnets 5 can drive the rotating shaft 9 to rotate, so that the rotating shaft 9 can drive other components to rotate.

[0030] The implementation principle of a built-in permanent magnet motor rotor structure in the embodiment of the present application is as follows: the device is provided with a plurality of permanent magnet mounting grooves 4 above the motor 1, so that the permanent magnet 5 can be installed on the inner side of the permanent magnet mounting groove 4, and the permanent magnet 5 has opposite magnetic poles to the permanent magnets 5 on both sides. After the permanent magnet 5 is installed to the inner side of the permanent magnet mounting groove 4, the fixing bolt is controlled to lock the permanent magnet 5, so that the fixing bolt passes through the connecting groove 7 above the permanent magnet 5 and is bolted with the threaded hole 6, and the shape of the fixing bolt is a convex letter shape, so that the largest part of the fixing bolt can be placed on the inner side of the receiving groove 8, so that the fixing bolt is not easy to interfere with other components after the installation is completed.

[0031] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0032] The above is a detailed introduction to a built-in permanent magnet motor rotor structure provided by the utility model. This article uses specific embodiments to explain the principles and implementation methods of the utility model. The description of the above embodiments is only used to help understand the method and core idea of ​​the utility model. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the utility model, the utility model can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the utility model.

Claims

1. A built-in permanent magnet motor rotor structure, characterized in that: include: A motor (1), wherein a motor stator (2) is fixedly mounted on one side of the motor (1), a motor rotor (3) is fixedly mounted on the inner side of the motor stator (2), a plurality of permanent magnet mounting grooves (4) are provided on the front side of the motor rotor (3), permanent magnets (5) are arranged on the inner sides of the permanent magnet mounting grooves (4), and threaded holes (6) are provided on the inner sides of the permanent magnet mounting grooves (4).

2. The internal permanent magnet motor rotor structure according to claim 1, characterized in that: The permanent magnet installation groove (4) and the permanent magnet (5) are in a V-shape, and the magnetic poles of the permanent magnets (5) on both sides of the permanent magnet (5) are opposite.

3. The internal permanent magnet motor rotor structure according to claim 1, characterized in that: A fixing bolt is installed on the inner side of the threaded hole (6) through a thread. The fixing bolt is in a convex shape, and the threaded hole (6) is meshed with the fixing bolt.

4. The internal permanent magnet motor rotor structure according to claim 1, characterized in that: A connection groove (7) is provided on the front side of the permanent magnet (5), and a storage groove (8) is provided on the inner side of the connection groove (7).

5. The internal permanent magnet motor rotor structure according to claim 4, characterized in that: The inner diameter of the connecting groove (7) is the same as the outer diameter of the fixing bolt at its smallest point, and the inner diameter of the receiving groove (8) is the same as the inner diameter of the fixing bolt at its largest point.

6. The internal permanent magnet motor rotor structure according to claim 1, characterized in that: A rotating shaft (9) is fixedly mounted on the front side of the motor (1).

Images