Rotor and motor

Abstract

The utility model discloses a rotor, comprising a rotor shaft which comprises a first part and a second part which are opposite to each other along the axial direction, and the outer wall of the first part is provided with first anti-loose teeth; the plurality of groups of rotor silicon steel sheets are arranged between the first part and the second part; the first end cover is arranged on the first part in a sleeving manner, and is connected with the rotor silicon steel sheet on one side in the axial direction; and the locking ring is sleeved on the first part and is connected with the first end cover along the axial direction, the inner wall of the locking ring is provided with second anti-loose teeth, and the second anti-loose teeth are meshed with the first anti-loose teeth so as to limit the first end cover and the plurality of groups of rotor silicon steel sheets to move relative to the rotor shaft along the axial direction. The locking ring in the rotor has an anti-loosening function and can provide large axial pre-tightening force and a long-term stable locking function, and after the rotor is used for a long time, the situations that parts are loosened, fall off, fail in function and the like cannot occur, and the rotor has high stability. The utility model also provides a motor comprising the rotor.

Description

Technical Field

[0001] The utility model relates to the technical field of motors, in particular to a rotor and a motor. Background Art

[0002] The rotor assembly of a motor generally consists of a rotor core, a rotor shaft, and end caps. The rotor core is made of multiple sets of silicon steel sheets that are stamped and laminated. The end caps are located on the front and rear sides of the rotor core to seal the multiple sets of silicon steel sheets. To prevent the performance of the motor from being affected by factors such as disconnection and functional failure between the various components of the rotor assembly, a locking member (such as a lock ring) is required during assembly of the rotor assembly to achieve an interference fit with the rotor shaft to lock the end caps and the multiple sets of silicon steel sheets located therebetween. This requires designing an appropriate interference fit to enable the lock ring to achieve its anti-loosening locking function.

[0003] However, the interference fit process requires high design requirements, such as precise interference fit, minimal surface roughness on the lock ring and rotor shaft, and precise shape and position, which increases assembly complexity. Furthermore, after long-term operation, the interference fit of the rotor assembly gradually decreases, causing the lock ring's preload to weaken, leading to loose silicon steel sheets or component failure. Utility Model Content

[0004] The present invention aims to address the technical problem that conventional interference fits in motor rotors can easily lead to a reduction in interference and preload, which can cause component loss or functional failure. This invention provides a rotor and motor with an anti-loosening function, providing a large axial preload and long-term, stable locking action. The rotors of the present invention are designed to withstand long-term use without component loosening, loss, or functional failure, demonstrating high stability.

[0005] In order to solve the above technical problems, the embodiment of the present utility model discloses a rotor, comprising:

[0006] The rotor shaft comprises a first portion and a second portion opposite to each other in the axial direction, wherein an outer wall of the first portion is provided with a first anti-loosening tooth;

[0007] a plurality of groups of rotor silicon steel sheets, disposed between the first portion and the second portion;

[0008] A first end cover is sleeved on the first part, and is connected to the rotor silicon steel sheet on one side along the axial direction;

[0009] A locking ring is sleeved on the first part and connected to the first end cover along the axial direction. The inner wall of the locking ring is provided with second anti-loosening teeth, and the second anti-loosening teeth are engaged with the first anti-loosening teeth to limit the movement of the first end cover and the multiple groups of rotor silicon steel sheets relative to the rotor shaft along the axial direction.

[0010] By adopting the above-mentioned technical solution, a first anti-loosening tooth is provided on the outer wall of the rotor shaft in the rotor of the embodiment of the present application, and a second anti-loosening tooth is provided on the corresponding inner wall of the locking ring connected to the rotor shaft. Through the engagement between the first anti-loosening tooth and the second anti-loosening tooth, the first end cover and multiple groups of rotor silicon steel sheets can be restricted from moving axially relative to the rotor shaft.

[0011] In other words, when the first anti-loosening teeth on the rotor shaft and the second anti-loosening teeth on the lock ring engage, they can provide a large axial preload force for the first end cap connected to the lock ring and the multiple groups of rotor silicon steel sheets connected to the first end cap. If a traditional interference fit is used between the lock ring and the rotor shaft, the interference will decrease with the number of operations and time, causing the rotor lock ring, first end cap, and rotor silicon steel sheets to loosen or even fall off, ultimately causing the rotor to fail. However, the axial preload force of the embodiment of the present application does not decrease with the long-term operation of the rotor, thus providing a long-term and stable locking effect.

[0012] At the same time, since the axial preload force formed by the engagement of the first anti-loosening teeth and the second anti-loosening teeth in the embodiment of the present application will not decay and has better stability, the requirements for the rotor pressing equipment capabilities (such as tightening capabilities) are relatively low, which further reduces the purchase cost of the motor assembly production line equipment.

[0013] According to another specific embodiment of the present invention, the first anti-loosening teeth include a plurality of first bevel teeth, and along the circumference of the rotor, the plurality of first bevel teeth are arranged around the outer wall of the first part; the second anti-loosening teeth include a plurality of second bevel teeth, and along the circumference, the plurality of second bevel teeth are arranged around the inner wall of the locking ring.

[0014] According to another specific embodiment of the present invention, the projection of each first bevel tooth in the first direction includes a first bevel, and the first bevel and the projection of the outer wall of the first part in the first direction are set at a first angle; the projection of each second bevel tooth in the first direction includes a second bevel, and the second bevel and the projection of the inner wall of the locking ring in the first direction are set at the first angle, and the first direction is perpendicular to the axial direction.

[0015] According to another specific embodiment of the present invention, the first angle is β, 0°<β<45°.

[0016] By adopting the above technical solution, along the first direction, the first bevel in the first bevel tooth of the rotor shaft and the projection of the outer wall of the first part form a first angle. Correspondingly, the second bevel in the second bevel tooth of the locking ring and the projection of the inner wall of the locking ring also form a first angle. The first angle can take any value within the open interval of (0°, 45°). The first angle is taken from this range, which can facilitate the second bevel tooth of the locking ring and the corresponding first bevel tooth of the rotor shaft to engage more smoothly. In other words, it is convenient to axially assemble the locking ring to the corresponding position of the rotor shaft, thereby effectively improving the assembly efficiency of the locking ring.

[0017] According to another specific embodiment of the present invention, the projection of each first bevel tooth in the first direction includes a third bevel, and the third bevel and the projection of the outer wall of the first part in the first direction are set at a second angle; the projection of each second bevel tooth in the first direction includes a fourth bevel, and the fourth bevel and the projection of the inner wall of the locking ring in the first direction are set at the second angle.

[0018] According to another specific embodiment of the present invention, the second angle is α, 60°<α<90°.

[0019] According to another specific embodiment of the present invention, the first inclined surface and the third inclined surface are arranged at an acute angle, and the second inclined surface and the fourth inclined surface are arranged at an acute angle.

[0020] By adopting the above technical solution, along the first direction, the third bevel in the first bevel tooth of the rotor shaft and the projection of the outer wall of the first part form a second angle. Correspondingly, the fourth bevel in the second bevel tooth of the lock ring and the projection of the inner wall of the lock ring also form a second angle. The second angle can take any value within the open interval of (60°, 90°). The second angle taken within this range is used to ensure that after the second bevel tooth of the lock ring and the first bevel tooth of the rotor shaft are engaged, the lock ring will not be retracted due to a reverse force (such as a rebound force). Retraction means that the lock ring will move in a direction opposite to the assembly direction. When 60°<α<90°, the first bevel tooth and the second bevel tooth present a barb shape (for example, the first bevel and the third bevel in the first bevel tooth are set at an acute angle, and the second bevel and the fourth bevel in the second bevel tooth are set at an acute angle), which can prevent the lock ring from retracting, thereby further enhancing the anti-loosening and locking function.

[0021] According to another specific embodiment of the present invention, the projection of each first oblique tooth in the first direction is in the shape of a barb, and the projection of each second oblique tooth in the first direction is in the shape of a barb.

[0022] According to another specific embodiment of the present invention, the rotor also includes a second end cover, which is sleeved on the second part. Along the axial direction, the second end cover is connected to the rotor silicon steel sheet on the other side, and the second end cover is interference fit with the second part.

[0023] An embodiment of the present utility model further discloses a motor, comprising the rotor described in any one of the above embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A three-dimensional diagram of a motor according to an embodiment of the present invention is shown.

[0025] Figure 2 A partially enlarged exploded view of a rotor according to an embodiment of the present invention is shown.

[0026] Figure 3 A cross-sectional view of a rotor according to an embodiment of the present invention is shown.

[0027] Figure 4 Show Figure 3 A partial enlarged view of area A in the middle.

[0028] Figure 5 Show Figure 3 A partial enlarged view of area B in the middle.

[0029] Figure 6 A partially enlarged stereoscopic view of the first part of the rotor according to an embodiment of the present invention is shown.

[0030] Figure 7 A partially enlarged stereoscopic view of the first anti-loosening tooth in the first part of the rotor according to an embodiment of the present utility model is shown.

[0031] Figure 8 A three-dimensional view of a lock ring in a rotor according to an embodiment of the present invention is shown.

[0032] Figure 9 A partially enlarged stereoscopic view of the second anti-loosening tooth of the locking ring in the rotor according to an embodiment of the present utility model is shown.

[0033] Figure 10 A partially enlarged projection diagram of the first anti-loosening tooth in the rotor of an embodiment of the utility model in the first direction is shown.

[0034] Figure 11 A partially enlarged cross-sectional view of the second anti-loosening tooth in the rotor according to an embodiment of the present utility model in the first direction is shown. DETAILED DESCRIPTION

[0035] The following is an explanation of the implementation of the present invention by means of specific specific embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. Although the description of the present invention will be introduced in conjunction with the preferred embodiment, this does not mean that the features of this utility model are limited to this implementation. On the contrary, the purpose of introducing the utility model in conjunction with the implementation is to cover other options or modifications that may be extended based on the claims of the present invention. In order to provide an in-depth understanding of the present invention, the following description will contain many specific details. The present invention can also be implemented without using these details. In addition, in order to avoid confusion or blurring the focus of the present invention, some specific details will be omitted in the description. It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0036] It should be noted that in this specification, similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0037] In the description of this embodiment, it should be noted that the terms "upper", "lower", "inner", "bottom", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as a limitation on the utility model.

[0038] The terms “first”, “second”, etc. are only used for distinguishing descriptions and should not be understood as indicating or implying relative importance.

[0039] In the description of this embodiment, it should be noted that, unless otherwise specified or limited, the terms "disposed," "connected," and "connected" should be understood broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this embodiment based on specific circumstances.

[0040] In order to make the purpose, technical solutions and advantages of the present invention more clear, the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

[0041] refer to Figure 1 and Figure 2The present invention provides a motor including a rotor 1. The rotor 1 includes a rotor shaft 10, six groups of rotor silicon steel sheets 20, a first end cover 30 and a second end cover 40 located on both sides of the rotor silicon steel sheets 20, and a lock ring 50 provided on the first end cover 30.

[0042] The rotor shaft 10 includes a Figure 1 The first portion 101 and the second portion 102 are opposite to each other in the Z direction shown in FIG. Figure 2 As shown, it can be seen that the outer wall 1010 of the first part 101 is provided with a first anti-loosening tooth 103.

[0043] Six groups of rotor silicon steel sheets 20 are stacked axially, and each group of rotor silicon steel sheets 20 is composed of multiple thin sheets (i.e., thinner silicon steel sheets) laminated together. The six groups of rotor silicon steel sheets 20 are arranged around the rotor shaft 10 and are arranged between the first part 101 and the second part 102. The embodiment of the present application does not limit the number of thin sheets in each group of silicon steel sheets 20, and accordingly, does not impose specific restrictions on the number of groups of rotor silicon steel sheets 20. For example, the rotor 1 of the embodiment of the present application can also include three, four, seven, or other groups of rotor silicon steel sheets 20, which can be selected according to the actual application of the motor.

[0044] Continue to refer Figure 1 and Figure 2 The first end cover 30 is sleeved on the first portion 101 of the rotor shaft 10, and the first end cover 30 is axially aligned with one side (i.e. Figure 1 The rotor silicon steel sheet 20 is connected (indicated by the Z1 direction).

[0045] The second end cover 40 is sleeved on the second portion 102 of the rotor shaft 10, and the second end cover 40 is connected to the other side (i.e. Figure 1 For example, the second end cover 40 is interference fit with the second portion 102, so that the second end cover 40 cannot move axially relative to the second portion 102, for example, referring to Figure 3 Combined with Figure 1 , an interference fit can be achieved with the second end cover 40 by setting a shoulder 1021 in the second part 102. The embodiment of the present application does not impose any specific restrictions on the interference fit between the second end cover 40 and the second part 102.

[0046] refer to Figure 1 and Figure 2 For example, the first end cover 30 can be the front end cover of the rotor 1, and the second end cover 40 can be the rear end cover of the rotor 1, or the first end cover 30 can be the rear end cover of the rotor 1, and correspondingly, the second end cover 40 can be the front end cover of the rotor 1. This embodiment of the present application does not limit this.

[0047] The lock ring 50 is sleeved on the first portion 101 and is arranged in the axial direction (such as Figure 1 The lock ring 50 is connected to the first end cover 30, as shown in the Z direction. Figure 2 As shown, the inner wall 500 of the locking ring 50 is provided with a second anti-loosening tooth 501 .

[0048] refer to Figures 3 to 5 , Figure 3 A cross-sectional view of the rotor 1 is shown as an example; Figure 4 It is shown as an example Figure 3 A partial enlarged view of area A in the middle; Figure 5 It is shown as an example Figure 3 A partial enlarged view of area B in the middle. It can be seen that the second anti-loosening teeth 501 engage with the first anti-loosening teeth 103 provided on the outer wall of the first portion 101, thereby restricting the first end cover 30 and the six groups of rotor silicon steel sheets 20 from axial movement relative to the rotor shaft 10. In other words, at this time, the six groups of rotor silicon steel sheets 20 between the first end cover 30 and the second end cover 40 will not move axially. The second anti-loosening teeth 501 of the locking ring 50 cooperate with the first anti-loosening teeth 103 of the first portion 101 to jointly lock the first end cover 30 and the six groups of silicon steel sheets 20.

[0049] refer to Figures 1 to 5 , adopting the above technical solution, a first anti-loosening tooth 103 is provided on the outer wall 1010 of the rotor shaft 10 in the rotor of the embodiment of the present application, and a second anti-loosening tooth 501 is provided on the corresponding inner wall 500 of the lock ring 50 connected to the rotor shaft 10. Through the engagement between the first anti-loosening tooth 103 and the second anti-loosening tooth 501, the first end cover 30 and the six groups of rotor silicon steel sheets 20 can be restricted from axial movement relative to the rotor shaft 10.

[0050] That is, after the first anti-loosening teeth 103 of the rotor shaft 10 and the second anti-loosening teeth 501 of the lock ring 50 are engaged, a relatively large axial preload force can be provided to the first end cover 30 connected to the lock ring 50 and the six groups of rotor silicon steel sheets 20 connected to the first end cover 30. If a traditional interference fit is adopted between the lock ring 50 and the rotor shaft 10, the interference will decrease with the increase in the number of operations and time, causing the lock ring 50, the first end cover 30, and the rotor silicon steel sheets 20 of the rotor 1 to loosen or even fall off, ultimately causing the rotor 1 to fail. However, the axial preload force of the embodiment of the present application will not decrease with the long-term operation of the rotor 1, and thus can provide a long-term and stable locking effect.

[0051] At the same time, since the axial preload force formed by the engagement of the first anti-loosening teeth 103 and the second anti-loosening teeth 501 in the embodiment of the present application will not decay and has better stability, the requirements for the rotor pressing equipment capabilities (such as tightening capabilities) are relatively low, which further reduces the purchase cost of the motor assembly production line equipment.

[0052] refer to Figure 6 and Figure 7 , Figure 6 exemplarily shows a partial enlarged perspective view of the first portion 101 of the rotor shaft 10; Figure 7 A partially enlarged perspective view of the first anti-loosening tooth 103 of the first part 101 is exemplarily shown.

[0053] In one possible implementation, Figure 7 As shown, the first anti-loosening tooth 103 includes a plurality of first oblique teeth 1031. The embodiment of the present application does not impose any specific limitation on the number of the first oblique teeth 1031. For example, the first oblique teeth 1031 may be provided as follows: Figure 7 The fourteen first oblique teeth 1031 shown in the figure may also be provided with three, six, seven, eleven, twenty or other numbers of first oblique teeth 1031. Figure 6 and Figure 7 As shown, along the circumference of the rotor (such as Figure 6 R direction shown in the figure), a plurality of first oblique teeth 1031 are arranged around the outer wall 1010 of the first part 101.

[0054] refer to Figure 8 and Figure 9 , Figure 8 A perspective view of the locking ring 50 is shown as an example; Figure 9 A partially enlarged stereoscopic view of the second anti-loosening tooth 501 of the locking ring 5 is shown as an example.

[0055] like Figure 9 As shown, the second anti-loosening teeth 501 include a plurality of second oblique teeth 5011, and the plurality of second oblique teeth 5011 and the plurality of first oblique teeth 1031 (as shown in FIG. Figure 7 Correspondingly, the embodiment of the present application does not impose any specific restrictions on the number of the second oblique teeth 5011. Figure 8 and Figure 9 As shown, along the circumference of the rotor (such as Figure 8 R direction shown in the figure), a plurality of second oblique teeth 5011 are arranged around the inner wall 500 of the locking ring 50.

[0056] refer to Figure 10 Combined with Figure 2 , Figure 10 The first anti-loosening tooth 103 is exemplarily shown as a partially enlarged projection diagram in the first direction, where the first direction (eg radial direction) is as shown in FIG. Figure 2 As shown in the X direction in the figure, but not limited thereto, any direction perpendicular to the axial direction falls within the protection range of the first direction.

[0057] In a possible embodiment, each first bevel tooth 1031 is in the first direction (eg Figure 2The projection on the X direction shown in FIG) includes a first inclined surface 10311, a first inclined surface 10311 and a projection of the outer wall 1010 of the first portion 101 in the first direction (ie Figure 10 The first angle β is shown in the dashed line m).

[0058] refer to Figure 11 Combined with Figure 2 , Figure 11 The partially enlarged cross-sectional view of the second anti-loosening tooth 501 in the first direction is shown as an example. The first direction (for example, radial direction) is as follows: Figure 2 As shown in the X direction in the figure, but not limited thereto, any direction perpendicular to the axial direction falls within the protection range of the first direction.

[0059] The projection of each second bevel tooth 5011 in the first direction includes a second bevel surface 50111. The projection of the second bevel surface 50111 and the inner wall 500 of the lock ring 50 in the first direction (ie Figure 11 The dotted line n) is also set at a first angle β.

[0060] Exemplarily, 0°<β<45°, the first angle β can be selected from any angle within the open interval (0°, 45°), such as 7°, 10°, 15°, 21°, 35°, etc.

[0061] refer to Figure 10 and Figure 11 Combined with Figure 2 Using the above technical solution, along the first direction, a first angle β is formed between the first inclined surface 10311 of the first oblique tooth 1031 of the rotor shaft 10 and the projection of the outer wall 1010 of the first portion 101. Correspondingly, a first angle β is also formed between the second oblique surface 50111 of the second oblique tooth 5011 of the lock ring 50 and the projection of the inner wall 500 of the lock ring 50. The first angle β can take any value within the open range of (0°, 45°). When the first angle β is taken within this range, the first oblique surface 10311 and the corresponding second oblique surface 50111 are easily fitted together, and the second oblique teeth 5011 of the lock ring 50 can be more smoothly meshed with the corresponding first oblique teeth 1031 of the rotor shaft. In other words, the lock ring 50 is easily assembled to the corresponding position of the rotor shaft along the axial direction, effectively improving the assembly efficiency of the lock ring 50.

[0062] Refer again Figure 10 In a possible embodiment, the projection of each first bevel tooth 1031 in the first direction includes a third bevel 10312, and the projection of the third bevel 10312 and the outer wall 1010 of the first part 101 in the first direction (i.e. Figure 10 The middle dotted line m) is set at a second angle α.

[0063] Refer again Figure 11The projection of each second bevel tooth 5011 in the first direction includes a fourth bevel 50112, and the projection of the fourth bevel 50112 and the inner wall 500 of the lock ring 50 in the first direction (ie Figure 11 The second angle α is shown as the dashed line n.

[0064] Exemplarily, 60°<α<90°, the second angle α can be selected from any angle within the open interval (60°, 90°), such as 61°, 75°, 79°, 85°, 88°, etc.

[0065] refer to Figure 10 and Figure 11 In a possible embodiment, it can be seen that the first inclined surface 10311 and the third inclined surface 10312 are set at an acute angle θ, and accordingly, the second inclined surface 50111 and the fourth inclined surface 50112 are also set at an acute angle θ. The embodiment of the present application does not impose any specific restrictions on the value of the acute angle θ, and can be designed according to actual applications.

[0066] In a possible implementation, the projection of each first oblique tooth 1031 in the first direction is in the shape of a barb, and the projection of each second oblique tooth 5011 in the first direction is in the shape of a barb.

[0067] refer to Figure 10 and Figure 11 Combined with Figure 1 and Figure 2 , using the above technical solution, along the first direction, a second angle α is formed between the third bevel 10312 of the first bevel tooth 1031 of the rotor shaft 10 and the projection of the outer wall 1010 of the first portion 101. Correspondingly, a second angle α is also formed between the fourth bevel 50112 of the second bevel tooth of the lock ring 50 and the projection of the inner wall 500 of the lock ring 50. The second angle α can take any value within the open range of (60°, 90°). The second angle α taken within this range is used to ensure that after the second bevel tooth 5011 of the lock ring 50 and the first bevel tooth 1031 of the rotor shaft 10 are engaged, the lock ring 50 will not retreat due to a reverse force (such as a rebound force). Retreating means that the lock ring 50 will move in a direction opposite to the assembly direction, that is, the assembled lock ring 50 will not move in the direction opposite to the assembly direction. Figure 1 When 60°<α<90°, the first beveled tooth 1031 and the second beveled tooth 5011 exhibit a barbed shape (for example, the first beveled surface 10311 and the third beveled surface 1032 of the first beveled tooth 1031 are arranged at an acute angle θ, and the second beveled surface 50111 and the fourth beveled surface 50112 of the second beveled tooth 5011 are arranged at an acute angle θ), which can prevent the locking ring 50 from retreating, thereby further enhancing the anti-loosening locking function.

[0068] Although the present invention has been illustrated and described with reference to certain preferred embodiments of the present invention, it should be understood by those skilled in the art that the above description is provided to further illustrate the present invention in conjunction with specific embodiments, and that the present invention should not be construed as being limited to these descriptions. Those skilled in the art may make various changes in form and detail, including simple deductions or substitutions, without departing from the spirit and scope of the present invention.

Claims

1. A rotor, characterized in that: include: The rotor shaft comprises a first portion and a second portion opposite to each other in the axial direction, wherein an outer wall of the first portion is provided with a first anti-loosening tooth; a plurality of groups of rotor silicon steel sheets, disposed between the first portion and the second portion; A first end cover is sleeved on the first part, and is connected to the rotor silicon steel sheet on one side along the axial direction; A locking ring is sleeved on the first part and connected to the first end cover along the axial direction. The inner wall of the locking ring is provided with second anti-loosening teeth, and the second anti-loosening teeth are engaged with the first anti-loosening teeth to limit the movement of the first end cover and the multiple groups of rotor silicon steel sheets relative to the rotor shaft along the axial direction.

2. The rotor according to claim 1, characterized in that The first anti-loosening teeth include a plurality of first bevel teeth, which are arranged around the outer wall of the first part along the circumference of the rotor; the second anti-loosening teeth include a plurality of second bevel teeth, which are arranged around the inner wall of the locking ring along the circumference.

3. The rotor according to claim 2, characterized in that The projection of each first bevel tooth in the first direction includes a first bevel, and the first bevel and the projection of the outer wall of the first part in the first direction are set at a first angle; the projection of each second bevel tooth in the first direction includes a second bevel, and the second bevel and the projection of the inner wall of the locking ring in the first direction are set at the first angle, and the first direction is perpendicular to the axial direction.

4. The rotor according to claim 3, characterized in that The first angle is β, 0°<β<45°.

5. The rotor according to claim 4, characterized in that The projection of each first bevel tooth in the first direction includes a third bevel, and the third bevel and the projection of the outer wall of the first part in the first direction are set at a second angle; the projection of each second bevel tooth in the first direction includes a fourth bevel, and the fourth bevel and the projection of the inner wall of the locking ring in the first direction are set at the second angle.

6. The rotor according to claim 5, characterized in that The second angle is α, 60°<α<90°.

7. The rotor according to claim 5, characterized in that The first inclined surface and the third inclined surface are arranged at an acute angle, and the second inclined surface and the fourth inclined surface are arranged at an acute angle.

8. The rotor according to claim 2, characterized in that The projection of each first oblique tooth in the first direction is in a barb shape, and the projection of each second oblique tooth in the first direction is in a barb shape.

9. The rotor according to claim 1, characterized in that The rotor further includes a second end cover, which is sleeved on the second part. Along the axial direction, the second end cover is connected to the rotor silicon steel sheet on the other side, and the second end cover is interference fit with the second part.

10. A motor, characterized in that: Comprising a rotor as claimed in any one of claims 1 to 9.

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