Radial magnetizing quadrupole new energy motor permanent magnet unit

Abstract

The utility model belongs to the technical field of permanent magnets, and particularly relates to a radial magnetizing quadrupole new energy motor permanent magnet unit, which comprises a quadrupole new energy motor rotor, a permanent magnet is inserted in a mounting port of the quadrupole new energy motor rotor, and a rectangular groove is formed in the outer wall of the permanent magnet; according to the four-season new energy motor rotor, a group of rectangular grooves are preset on the outer wall of the permanent magnet, and then the rectangular sleeves are installed on the outer walls of the rectangular grooves, so that the permanent magnet and the rectangular sleeves can be installed in the installation port of the four-season new energy motor rotor together during installation; in this way, the first reinforcing strips and the second reinforcing strips on the rectangular sleeve can expand and be extruded into the mounting openings after installation is completed, so that the permanent magnet can be more firmly maintained in the quadrupole new energy motor rotor after installation, and the stability of the permanent magnet after installation can be improved through the structure.

Description

Technical Field

[0001] The utility model belongs to the technical field of permanent magnets, and in particular relates to a radially magnetized four-pole new energy motor permanent magnet unit. Background Art

[0002] Strong magnetic permanent magnets have higher coercive force and residual magnetic induction intensity, such as NdFeB magnets and HolmiumFeB magnets, etc. Soft magnetic permanent magnets have lower coercive force and residual magnetic induction intensity, such as AlNiCo magnets, etc. Permanent magnets are widely used in various fields, such as electromagnetic equipment such as motors, generators, sensors, and MRIs, and are also used to manufacture high-tech products such as maglev trains and magnetic bearings.

[0003] With the continuous advancement of new energy vehicle technology, radially magnetized four-pole new energy motors are also facing increasingly stringent technical requirements. When installing the permanent magnet unit of a four-pole new energy motor, a certain amount of installation space is usually reserved to ensure that the permanent magnet can be installed smoothly. However, this reserved space will cause the structural stability of the permanent magnet inside the motor to decrease when the motor rotates at high speed. Over a long period of use, this instability will gradually increase the damage to the permanent magnet, ultimately affecting its use effect, and may even cause the permanent magnet to fail. Utility Model Content

[0004] The purpose of the utility model is to provide a radially magnetized four-pole new energy motor permanent magnet unit, aiming to solve the problem that with the continuous advancement of new energy vehicle technology, radially magnetized four-pole new energy motors are also facing increasingly stringent technical requirements. When installing the permanent magnet unit of a four-pole new energy motor, in order to ensure that the permanent magnet can be installed smoothly, a certain installation space is usually reserved. However, this reserved space will cause the structural stability of the permanent magnet inside the motor to decrease when the motor rotates at high speed. Under long-term use, this instability will gradually aggravate the damage to the permanent magnet, ultimately affecting its use effect, and may even cause the permanent magnet to fail.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a radially magnetized four-pole new energy motor permanent magnet unit, comprising a four-pole new energy motor rotor, a permanent magnet is inserted into the mounting opening of the four-pole new energy motor rotor, and a rectangular groove is opened on the outer wall of the permanent magnet;

[0006] A rectangular sleeve is sleeved on the outer wall of the rectangular groove, a first reinforcement strip is bonded to one outer wall of the rectangular sleeve, and a second reinforcement strip is bonded to the other outer wall of the rectangular sleeve.

[0007] In order to ensure that the rectangular sleeve can be at the same horizontal position as the surface of the permanent magnet after being installed in the rectangular groove, as a preferred radially magnetized four-pole new energy motor permanent magnet unit of the utility model, twelve groups of rectangular grooves are evenly spaced on the permanent magnet, and the recessed depth of the rectangular grooves is adapted to the minimum thickness of the rectangular sleeve.

[0008] In order to allow the first reinforcement strip, the second reinforcement strip and the rectangular sleeve to shrink inward during installation, as a preferred radially magnetized four-pole new energy motor permanent magnet unit of the utility model, the first reinforcement strip, the second reinforcement strip and the rectangular sleeve are all made of flexible rubber material, and the sides of the first reinforcement strip and the second reinforcement strip are both semicircular structures.

[0009] In order to enable the rectangular sleeve to pass through the permanent magnet and dock with the rectangular slot, as a preferred radially magnetized four-pole new energy motor permanent magnet unit of the utility model, a through slot is opened through the center end of the rectangular sleeve, and the rectangular sleeve forms an interference connection structure with the rectangular slot through the through slot.

[0010] In order to enable the permanent magnet to be more firmly installed in the four-pole new energy motor rotor, as a preferred radially magnetized four-pole new energy motor permanent magnet unit of the utility model, the permanent magnet forms an interference fit structure inside the mounting port of the four-pole new energy motor rotor through a rectangular groove, a rectangular sleeve, a first reinforcement strip, a second reinforcement strip and a through groove.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] By presetting a group of rectangular grooves on the outer wall of the permanent magnet, and then installing the rectangular sleeve on the outer wall of the rectangular groove, the permanent magnet will be installed together with the rectangular sleeve into the installation port of the four-season new energy motor rotor during installation. In this way, the first reinforcement strip and the second reinforcement strip on the rectangular sleeve will expand and squeeze inside the installation port after installation, so that the permanent magnet can be more firmly maintained in the four-pole new energy motor rotor after installation, and the stability of the permanent magnet after installation can be improved through the above structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0014] Figure 1 This is a schematic diagram of the rotor structure of a four-pole new energy motor of the utility model;

[0015] Figure 2 This is a schematic diagram of the overall assembly structure of the permanent magnet of the utility model;

[0016] Figure 3This is a schematic diagram of the permanent magnet structure of the utility model.

[0017] Figure 4 It is a schematic diagram of the rectangular sleeve structure of the utility model.

[0018] In the figure: 1. Four-pole new energy motor rotor; 2. Permanent magnet; 3. Rectangular slot; 4. Rectangular sleeve; 5. First reinforcement strip; 6. Second reinforcement strip; 7. Through slot. DETAILED DESCRIPTION

[0019] 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 in 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.

[0020] See also Figure 1-4 The utility model provides the following technical solutions: a radially magnetized four-pole new energy motor permanent magnet unit, comprising a four-pole new energy motor rotor 1, a permanent magnet 2 is inserted into the mounting opening of the four-pole new energy motor rotor 1, the permanent magnet 2 is magnetized by radial magnetization, and a rectangular groove 3 is opened on the outer wall of the permanent magnet 2;

[0021] A rectangular sleeve 4 is sleeved on the outer wall of the rectangular groove 3 , a first reinforcement strip 5 is bonded to one outer wall of the rectangular sleeve 4 , and a second reinforcement strip 6 is bonded to the other outer wall of the rectangular sleeve 4 .

[0022] Preferably, twelve groups of rectangular grooves 3 are evenly spaced on the permanent magnet 2 , and the recessed depth of the rectangular grooves 3 matches the minimum thickness of the rectangular sleeve 4 .

[0023] When in use, the rectangular sleeve 4 is opened to allow the rectangular sleeve 4 to pass through one end of the permanent magnet 2, and the rectangular sleeve 4 is moved to the position of the rectangular slot 3, and the rectangular sleeve 4 is released. At this time, the rectangular sleeve 4 will be reset, so that the rectangular sleeve 4 can be completely installed in the rectangular slot 3.

[0024] Preferably, the first reinforcement strip 5, the second reinforcement strip 6 and the rectangular sleeve 4 are all made of flexible rubber material, and the side surfaces of the first reinforcement strip 5 and the second reinforcement strip 6 are both semicircular structures.

[0025] During specific use, when installing the permanent magnet 2, the first reinforcement strip 5, the second reinforcement strip 6 and the rectangular sleeve 4 will be squeezed and contracted inward, so that the permanent magnet 2 can be completely installed into the installation opening of the four-pole new energy motor rotor 1.

[0026] Preferably, a through slot 7 is formed through the central end of the rectangular sleeve 4 , and an interference fit structure is formed between the rectangular sleeve 4 and the rectangular slot 3 via the through slot 7 .

[0027] Preferably, the permanent magnet 2 forms an interference fit structure inside the mounting opening of the four-pole new energy motor rotor 1 through the rectangular groove 3, the rectangular sleeve 4, the first reinforcement strip 5, the second reinforcement strip 6 and the through groove 7.

[0028] During specific use, the permanent magnet 2 can increase the extrusion force between it and the inside of the four-pole new energy motor rotor 1 after installation through the rectangular groove 3, the rectangular sleeve 4, the first reinforcement strip 5, the second reinforcement strip 6 and the through groove 7, thereby enabling the permanent magnet 2 to be more stably installed in the four-pole new energy motor rotor 1.

[0029] Working principle: The permanent magnet 2 is assembled before use, specifically:

[0030] First, the rectangular sleeve 4 is stretched outward from the outer wall of the through slot 7 at the center end thereof, so that the size of the through slot 7 in the rectangular sleeve 4 is enlarged, and then the rectangular sleeve 4 is inserted into the outer wall of the permanent magnet 2 through the through slot 7, and moved to the position of the rectangular slot 3, and the pulling force on the rectangular sleeve 4 is released. At this time, the rectangular sleeve 4 will be reset, so that the rectangular sleeve 4 can be tightened on the outer wall of the rectangular slot 3, and then the rectangular sleeve 4 is installed on the permanent magnet 2;

[0031] Then, the permanent magnet 2 is assembled with the four-pole new energy motor rotor 1. During the assembly, the first reinforcement strip 5 and the second reinforcement strip 6 entering the four-pole new energy motor rotor 1 are squeezed inward in turn, so that the permanent magnet 2 can smoothly enter the four-pole new energy motor rotor 1. After the complete permanent magnet 2 is installed, the first reinforcement strip 5 and the second reinforcement strip 6 on the permanent magnet 2 will be squeezed and fixed inside the four-pole new energy motor rotor 1. In this way, the permanent magnet 2 can enhance the firmness with the four-pole new energy motor rotor 1 after installation, thereby improving the stability of the permanent magnet 2 during high-speed rotation.

[0032] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A radially magnetized four-pole new energy motor permanent magnet unit, comprising a four-pole new energy motor rotor (1), wherein a permanent magnet (2) is inserted into the mounting opening of the four-pole new energy motor rotor (1), and characterized in that: A rectangular groove (3) is provided on the outer wall of the permanent magnet (2); A rectangular sleeve (4) is sleeved on the outer wall of the rectangular groove (3), a first reinforcement strip (5) is bonded to one side outer wall of the rectangular sleeve (4), and a second reinforcement strip (6) is bonded to the other side outer wall of the rectangular sleeve (4).

2. A radially magnetized four-pole new energy motor permanent magnet unit according to claim 1, characterized in that: Twelve groups of rectangular grooves (3) are provided on the permanent magnet (2) at equal intervals, and the recessed depth of the rectangular grooves (3) is adapted to the minimum thickness of the rectangular sleeve (4).

3. The radially magnetized four-pole new energy motor permanent magnet unit according to claim 1, characterized in that: The first reinforcement strip (5), the second reinforcement strip (6) and the rectangular sleeve (4) are all made of flexible rubber material, and the side surfaces of the first reinforcement strip (5) and the second reinforcement strip (6) are both semicircular structures.

4. The radially magnetized four-pole new energy motor permanent magnet unit according to claim 1, characterized in that: A through slot (7) is provided through the central end of the rectangular sleeve (4), and the rectangular sleeve (4) forms an interference connection structure with the rectangular slot (3) through the through slot (7).

5. The radially magnetized four-pole new energy motor permanent magnet unit according to claim 1, characterized in that: The permanent magnet (2) forms an interference-fitting structure inside the mounting opening of the four-pole new energy motor rotor (1) through a rectangular groove (3), a rectangular sleeve (4), a first reinforcement strip (5), a second reinforcement strip (6) and a through groove (7).

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