CN220544760U

CN220544760U - Oblique pole rotor assembly with adjustable axial pretightening force

Info

Publication number: CN220544760U
Application number: CN202321662773.7U
Authority: CN
Inventors: 毛维云; 王志鹏; 杨光; 高志川
Original assignee: Lishui Fangde Zhiqu Applied Technology Research Institute Co ltd
Current assignee: Lishui Fangde Zhiqu Applied Technology Research Institute Co ltd
Priority date: 2023-06-28
Filing date: 2023-06-28
Publication date: 2024-02-27
Anticipated expiration: 2033-06-28

Abstract

The utility model relates to an oblique pole rotor assembly with adjustable axial pretightening force, which comprises a rotor shaft, a rotor baffle A, rotor core sections and a rotor baffle B, wherein one end of the rotor shaft is provided with a blocking shoulder, a plurality of rotor core sections are sleeved on the rotor shaft, the other end of the rotor shaft is connected with a locking nut through threads, the locking nut and the blocking shoulder clamp the rotor core sections, the rotor core sections and the rotor shaft are circumferentially limited through key slot matching, and the circumferential positions of the rotor core sections are mutually staggered, so that oblique poles are formed by the rotor core sections. In the structure of the utility model, the rotor core section and the rotor shaft are matched through the key slot to carry out circumferential limit, so that the assembly is more convenient; in addition, the two ends of the rotor core are assembled in a shoulder and lock nut mode respectively, and appropriate tightening torque can be selected for assembly, so that NVH is improved; the oblique pole rotor assembly structure has the advantages of small vibration, stable operation and the like.

Description

Oblique pole rotor assembly with adjustable axial pretightening force

Technical Field

The present utility model relates to a rotor structure of a driving motor for a vehicle, and more particularly, to an oblique pole rotor assembly with adjustable axial pretightening force.

Background

The motor rotor generally comprises a motor shaft and a rotor core, the rotor core is generally formed by stacking a plurality of rotor punching sheets, the rotor core and a rotating shaft are assembled through interference fit, the mode has higher requirements on the machining dimensional accuracy of the rotor shaft and the rotor punching sheets, in order to prevent the rotor core from axially moving, one end of the rotor core is propped against a stop shoulder of the rotating shaft, the other end of the rotor core is required to be pressed by a steel pressing ring, the assembly is complex, and the rotor is still inevitably loosened after long-term use, so that the problems of shaking, noise and the like during the operation of the rotor are caused.

Disclosure of Invention

In order to solve the technical problems, the utility model aims to provide an oblique pole rotor assembly with adjustable axial pretightening force, which is convenient to assemble, and each assembly is more tightly matched and runs stably.

In order to achieve the above object, the present utility model adopts the following technical scheme:

the utility model provides an oblique pole rotor subassembly of adjustable axial pretightning force, includes rotor shaft, rotor baffle A, rotor core section and rotor baffle B, the one end of rotor shaft is equipped with keeps off the shoulder, and a plurality of rotor core section cover are established on the rotor shaft, the other end of rotor shaft has lock nut through threaded connection, and lock nut presss from both sides tightly a plurality of rotor core sections with keeping off the shoulder, and rotor core section carries out circumference spacing through the keyway cooperation with the rotor shaft, the circumference position of a plurality of rotor core sections misplaces each other for a plurality of rotor core sections form oblique pole.

As a preferable scheme: the rotor shaft is provided with a key groove, the inner wall of the rotor core section is provided with a core key groove, and flat keys are arranged in the key groove and the core key groove.

As a preferable scheme: the number of the key grooves on the rotor shaft is two, the two key grooves are arranged at 180 degrees, the number of the key grooves is also two, and the widths of the two key grooves are different.

As a preferable scheme: the positions of the core keyways on the plurality of rotor core segments are offset from one another.

As a preferable scheme: the rotor core section is formed by stacking a plurality of rotor punching sheets, wherein the inner side of each rotor punching sheet is provided with a lightening hole, and the outer side of each rotor punching sheet is provided with a magnetic steel hole.

As a preferable scheme: the core keyways are disposed inside the lightening holes, and core keyways on the plurality of rotor core segments are positioned at different angles from the central position of the corresponding lightening hole.

As a preferable scheme: after the lock nut is locked with the rotor shaft, the tooth breaking and locking are carried out.

Compared with the prior art, the utility model has the beneficial effects that:

in the structure of the utility model, the rotor core is multi-section, and a plurality of rotor core sections form oblique poles, which is beneficial to improving the performance; the rotor core section and the rotor shaft are matched through the key slot to perform circumferential limit, so that the assembly is more convenient; in addition, the two ends of the rotor core are assembled in a shoulder and lock nut mode respectively, and appropriate tightening torque can be selected for assembly, so that NVH is improved; the oblique pole rotor assembly structure has the advantages of small vibration, stable operation and the like.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and together with the description serve to explain the application and do not limit the application.

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

FIG. 2 is a schematic diagram of an explosive structure according to the present utility model;

fig. 3 and 4 are exploded views of a plurality of rotor core segments at different angles.

The reference numerals are: 1. a rotor shaft; 2. a rotor baffle A; 3. a rotor core segment; 4. a rotor baffle B; 5. a lock nut; 6. a flat key; 7. a key slot; 31. iron core key groove; 32. a lightening hole; 33. and a magnetic steel hole.

Description of the embodiments

It should be noted that the following detailed description is illustrative and is intended to provide further explanation of the present application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.

Furthermore, in the description of the present utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "clockwise," "counterclockwise," etc. indicate or are based on the orientation or positional relationship shown in the drawings, merely for convenience of description and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality" is two or more, unless otherwise clearly defined.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

The utility model is further illustrated by the following examples in conjunction with the accompanying drawings:

as shown in fig. 1 to 4, an oblique pole rotor assembly with adjustable axial pretightening force comprises a rotor shaft 1, a rotor baffle A2, rotor core sections 3 and a rotor baffle B4, wherein one end of the rotor shaft 1 is provided with a retaining shoulder, a plurality of rotor core sections 3 are sleeved on the rotor shaft 1, the other end of the rotor shaft 1 is connected with a lock nut 5 through threads, the lock nut 5 clamps the plurality of rotor core sections 3 with the retaining shoulder, and after the lock nut 5 is locked with the rotor shaft 1, tooth breaking and locking are carried out. The rotor core segments 3 are circumferentially limited by being matched with the rotor shaft 1 through key grooves, and the circumferential positions of the rotor core segments 3 are mutually staggered, so that the rotor core segments 3 form oblique poles.

The rotor shaft 1 is provided with a key groove 7, the inner wall of the rotor core section 3 is provided with a core key groove 31, and the key groove 7 and the core key groove 31 are internally provided with a flat key 6. The number of the key grooves 7 on the rotor shaft 1 is two, the two key grooves are arranged at intervals of 180 degrees, the number of the iron core key grooves 31 is also two, and the widths of the two iron core key grooves 31 are different. The positions of the key grooves 31 on the plurality of rotor core segments 3 are offset from each other.

The rotor core section 3 is formed by stacking a plurality of rotor punching sheets, wherein the inner side of each rotor punching sheet is provided with a lightening hole 32, and the outer side of each rotor punching sheet is provided with a magnetic steel hole 33. The core key grooves 31 are provided inside the lightening holes 32, and positions of the core key grooves 31 on the plurality of rotor core segments 3 are different from the angles of deflection of the center positions of the corresponding lightening holes 32.

As shown in fig. 3 and 4, the rotor core section 3 in the utility model is 8 sections, adopts a W-shaped oblique pole, is opposite to the spline end, takes the 1 st section as a zero point, takes the 2 nd section as a clockwise rotation angle a, takes the 3 rd section as a clockwise rotation angle beta and takes the 4 th section as a clockwise rotation angle gamma; segments 8,7,6,5 are in mirror image relationship with segments 1,2,3, 4; the rotor core segments 3 of the 1 st section and the 2 nd section can be deflected by adopting the core key slot 31 and the key slot 7 of the same side in a matched way; the 3 rd and 4 th rotor core segments 3 can be deflected with the core key slot 31 on the other side in cooperation with the key slot 7.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Although embodiments of the present utility model have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that variations, modifications, alternatives and variations may be made to the above embodiments by those skilled in the art without departing from the spirit and principles of the utility model, and any simple modification, equivalent variation and modification of the above embodiments in light of the technical principles of the utility model may be made within the scope of the present utility model.

Claims

1. The utility model provides an oblique utmost point rotor subassembly of adjustable axial pretightning force, includes rotor shaft (1), rotor baffle A (2), rotor core section (3) and rotor baffle B (4), the one end of rotor shaft (1) is equipped with keeps off the shoulder, and a plurality of rotor core sections (3) cover are established on rotor shaft (1), its characterized in that: the other end of the rotor shaft (1) is connected with a lock nut (5) through threads, the lock nut (5) clamps the rotor core sections (3) with the stop shoulder, the rotor core sections (3) and the rotor shaft (1) are circumferentially limited through key slot matching, and the circumferential positions of the rotor core sections (3) are mutually staggered, so that the rotor core sections (3) form oblique poles.

2. An adjustable axial pretension skewed pole rotor assembly according to claim 1 wherein: the rotor shaft (1) is provided with a key groove (7), the inner wall of the rotor core section (3) is provided with a core key groove (31), and flat keys (6) are arranged in the key groove (7) and the core key groove (31).

3. An adjustable axial pretension skewed pole rotor assembly according to claim 2 wherein: the rotor is characterized in that two key grooves (7) are formed in the rotor shaft (1), the two key grooves are arranged at intervals of 180 degrees, the number of the iron core key grooves (31) is two, and the widths of the two iron core key grooves (31) are different.

4. An adjustable axial pretension skewed pole rotor assembly according to claim 2 wherein: the positions of the core keyways (31) on the plurality of rotor core segments (3) are offset from each other.

5. An adjustable axial pretension skewed pole rotor assembly according to claim 2 wherein: the rotor core section (3) is formed by stacking a plurality of rotor punching sheets, wherein the inner side of each rotor punching sheet is provided with a lightening hole (32), and the outer side of each rotor punching sheet is provided with a magnetic steel hole (33).

6. An adjustable axial pretension skewed pole rotor assembly in accordance with claim 5 wherein: the core key groove (31) is arranged on the inner side of the lightening hole (32), and the positions of the core key grooves (31) on the rotor core sections (3) are different from the deflection angles of the central positions of the corresponding lightening holes (32).

7. An adjustable axial pretension skewed pole rotor assembly according to claim 1 wherein: after the lock nut (5) is locked with the rotor shaft (1), the teeth breaking and locking are carried out.