阅读说明：本技术 磁齿轮组件及具有其的复合电机 (Magnetic gear assembly and composite motor with same ) 是由 陈彬 肖勇 李权锋 桂鹏千 马晓皓 刘美扬 于 2020-11-30 设计创作，主要内容包括：本发明提供了一种磁齿轮组件及具有其的复合电机,磁齿轮组件包括调磁部、转子部和驱动部,其中,调磁部具有多个调磁段；转子部相对调磁部可移动地设置,转子部具有多个工作位置,每一个调磁段对应一个工作位置；驱动部与转子部连接,驱动部用于驱动转子部相对调磁部移动,以使当转子部从多个工作位置中的一个工作位置切换至另一个工作位置时磁齿轮组件的输出比不同。本发明解决了现有技术中的磁齿轮组件的调速范围受限的问题。(The invention provides a magnetic gear component and a composite motor with the same, wherein the magnetic gear component comprises a magnetism regulating part, a rotor part and a driving part, wherein the magnetism regulating part is provided with a plurality of magnetism regulating sections; the rotor part is movably arranged relative to the magnetic regulating part and is provided with a plurality of working positions, and each magnetic regulating section corresponds to one working position; the driving part is connected with the rotor part and is used for driving the rotor part to move relative to the magnetism regulating part, so that the output ratio of the magnetic gear assembly is different when the rotor part is switched from one working position to another working position in a plurality of working positions. The invention solves the problem that the speed regulation range of the magnetic gear assembly in the prior art is limited.)

1. A magnetic gear assembly, comprising:

a magnetic adjustment part having a plurality of magnetic adjustment sections (12);

the rotor part is movably arranged relative to the magnetic adjusting part and is provided with a plurality of working positions, and each magnetic adjusting section corresponds to one working position;

the driving part is connected with the rotor part and used for driving the rotor part to move relative to the magnetic adjusting part, so that when the rotor part is switched from one of the working positions to the other working position, the output ratio of the magnetic gear assembly is different.

2. The magnetic gear assembly according to claim 1, characterized in that the magnetic tuning portion comprises a magnetic tuning ring structure (10), the magnetic tuning ring structure (10) having a first receiving cavity (11), the rotor portion comprising:

a first rotor structure (20), wherein the first rotor structure (20) is arranged in the first accommodating cavity (11), a magnetic element (21) is arranged on the outer peripheral surface of the first rotor structure (20), and the first rotor structure (20) is movably arranged in the axial direction of the magnetic adjusting ring structure (10) so that the first rotor structure (20) has a plurality of working positions.

3. The magnetic gear assembly of claim 2, wherein the rotor portion further comprises:

a second rotor structure (30), wherein the second rotor structure (30) is arranged on the outer peripheral side of the magnetic regulating ring structure (10), the second rotor structure (30) comprises a plurality of sets of windings (31), the plurality of sets of windings (31) are arranged at intervals along the radial direction of the second rotor structure (30), the number of pole pairs of magnetic fields generated by the sets of windings (31) is different, and the second rotor structure (30) is movably arranged in the axial direction of the magnetic regulating ring structure (10) so that the second rotor structure (30) has a plurality of working positions;

when the first rotor structure (20) and the second rotor structure (30) move to the same working position, the number of poles of the magnetism adjusting sections (12) is equal to the sum of the number of pole pairs of the first rotor structure (20) and the number of pole pairs of the second rotor structure (30).

4. The magnet gear assembly according to claim 3, wherein the magnet ring adjustment structure (10) comprises:

a support cylinder (13), wherein the support cylinder (13) is provided with the first accommodating cavity (11), a plurality of mounting parts are formed on the cavity wall surface of the first accommodating cavity (11), each mounting part comprises a plurality of communication ports (111), the plurality of communication ports (111) are arranged at intervals along the circumferential direction of the support cylinder (13), and the plurality of mounting parts are arranged at intervals along the axial direction of the support cylinder (13);

the magnetic adjusting rings (14) are arranged in the first accommodating cavity (11), the number of the magnetic adjusting rings (14) is multiple, the magnetic adjusting rings (14) and the communication ports (111) are arranged in a one-to-one correspondence mode to form multiple magnetic adjusting sections (12), magnetic adjusting blocks (141) are arranged on the outer peripheral side of each magnetic adjusting ring (14), and the magnetic adjusting blocks (141) extend into the communication ports (111).

5. The magnet gear assembly according to claim 4, wherein the magnet ring adjustment structure (10) further comprises:

the first end cover (15), the first end cover (15) is covered at the position of a cylinder opening of the first end of the support cylinder (13) in the axial direction;

a second end cover (16), wherein the second end cover (16) is covered at the position of a cylinder opening of the axial second end of the support cylinder (13).

6. The magnetic gear assembly according to claim 5, further comprising:

a support shaft (40), the support shaft (40) is disposed in the first accommodating cavity (11) and is disposed coaxially with the support cylinder (13), a first end of the support shaft (40) is connected with the first end cover (15), a second end of the support shaft (40) is connected with the second end cover (16), the support shaft (40) includes a driving section (41), and the first rotor structure (20) is disposed at an outer peripheral side of the driving section (41).

7. The magnetic gear assembly of claim 6, wherein the drive portion comprises:

a first driving portion (50), the first driving portion (50) being disposed at a shaft section position near the first end of the support shaft (40), the first driving portion (50) having a first driving end (51), the first driving end (51) being used for driving connection with the first end of the driving section (41) to drive the first rotor structure (20) to move to the working position along the axial direction of the support shaft (40).

8. The magnetic gear assembly according to claim 7, wherein the drive portion further comprises:

a second driving portion (60), the second driving portion (60) being disposed at a shaft section position near the second end of the support shaft (40), the second driving portion (60) having a second driving end (61), the second driving end (61) being configured to be in driving connection with the second end of the driving section (41) to drive the first rotor structure (20) to move to the working position along the axial direction of the support shaft (40).

9. The magnetic gear assembly according to claim 8, further comprising:

a protective cylinder (70), wherein the protective cylinder (70) is covered on the outer periphery side of part of the magnetic regulating ring structure (10), the protective cylinder (70) is provided with a second accommodating cavity (71), and the second rotor structure (30) is arranged in the second accommodating cavity (71);

the third end cover (80), the third end cover (80) is covered at the position of the cylinder opening of the axial first end of the protective cylinder (70);

and the fourth end cover (90) is covered at the position of a cylinder opening of the axial second end of the protective cylinder (70).

10. The magnetic gear assembly of claim 9, wherein the drive portion further comprises:

a drive group (100), said drive group (100) being arranged within said second housing cavity (71), said drive group (100) comprising:

a first driving unit (110), wherein a first end of the first driving unit (110) is connected with the third end cover (80), and a second end of the first driving unit (110) is in driving connection with one axial side of the second rotor structure (30) so as to drive the second rotor structure (30) to move to different magnetic adjusting section (12) positions along the axial direction of the supporting shaft (40);

a second driving unit (120), wherein a first end of the second driving unit (120) is connected with the fourth end cover (90), and a second end of the second driving unit (120) is in driving connection with the other axial side of the second rotor structure (30) so as to drive the second rotor structure (30) to move to different positions of the magnetism adjusting section (12) along the axial direction of the support shaft (40).

11. A magnetic gear assembly according to claim 10, wherein the drive groups (100) are a plurality of groups, the groups of drive groups (100) being arranged circumferentially spaced apart along the second rotor structure (30).

12. The magnetic gear assembly of claim 11,

the first end of the supporting shaft (40) is provided with a first accommodating groove (42), and the first driving part (50) is arranged in the first accommodating groove (42);

the second end of the support shaft (40) has a second accommodation groove (43), and the second driving portion (60) is disposed in the second accommodation groove (43).

13. A magnetic gear assembly according to claim 12, characterized in that the groove wall surface of the first accommodation groove (42) is provided with a ball (200); and/or, the groove wall surface of the second accommodating groove (43) is provided with a ball (200).

14. A compound electric machine comprising a magnetic gear assembly, characterised in that the magnetic gear assembly is as claimed in any one of claims 1 to 13.

Technical Field

The invention relates to the technical field of non-contact transmission, in particular to a magnetic gear component and a composite motor with the same.

Background

In the prior art, a magnetic gear assembly generally includes an inner rotor, an outer rotor and a magnetic adjusting ring, and a magnetic field generated by a permanent magnet on the inner rotor is matched with a magnetic field generated by a permanent magnet on the outer rotor under the modulation action of the magnetic adjusting ring, so that the purpose of stable non-contact torque transmission is achieved. The existing magnetic gear assembly generally comprises a radial magnetic gear and an axial magnetic gear, but the number of poles of the inner rotor, the outer rotor and the magnetic adjusting ring of the magnetic gear assembly is determined, so that the output ratio of the existing magnetic gear assembly is fixed, and the speed adjusting range of the magnetic gear assembly is limited.

Disclosure of Invention

The invention mainly aims to provide a magnetic gear component and a composite motor with the same, and aims to solve the problem that the speed regulation range of the magnetic gear component in the prior art is limited.

In order to achieve the above object, according to one aspect of the present invention, there is provided a magnetic gear assembly including a magnetic modulating portion, a rotor portion, and a driving portion, wherein the magnetic modulating portion has a plurality of magnetic modulating segments; the rotor part is movably arranged relative to the magnetic regulating part and is provided with a plurality of working positions, and each magnetic regulating section corresponds to one working position; the driving part is connected with the rotor part and is used for driving the rotor part to move relative to the magnetism regulating part, so that the output ratio of the magnetic gear assembly is different when the rotor part is switched from one working position to another working position in a plurality of working positions.

Further, the magnetic adjusting portion comprises a magnetic adjusting ring structure, the magnetic adjusting ring structure is provided with a first accommodating cavity, the rotor portion comprises a first rotor structure, the first rotor structure is arranged in the first accommodating cavity, a magnetic element is arranged on the outer peripheral surface of the first rotor structure, and the first rotor structure is movably arranged in the axial direction of the magnetic adjusting ring structure, so that the first rotor structure is provided with a plurality of working positions.

The rotor part further comprises a second rotor structure, the second rotor structure is arranged on the outer peripheral side of the magnetic regulating ring structure and comprises a plurality of sets of windings, the plurality of sets of windings are arranged at intervals along the radial direction of the second rotor structure, the number of pole pairs of magnetic fields generated by the sets of windings is different, and the second rotor structure is movably arranged in the axial direction of the magnetic regulating ring structure so that the second rotor structure has a plurality of working positions; when the first rotor structure and the second rotor structure move to the same working position, the number of poles of the magnetic adjusting section is equal to the sum of the number of pole pairs of the first rotor structure and the number of pole pairs of the second rotor structure.

Furthermore, the magnetic regulating ring structure comprises a supporting cylinder and a magnetic regulating ring, wherein the supporting cylinder is provided with a first accommodating cavity, a plurality of mounting parts are formed on the cavity wall surface of the first accommodating cavity, each mounting part comprises a plurality of communication ports, the plurality of communication ports are arranged at intervals along the circumferential direction of the supporting cylinder, and the plurality of mounting parts are arranged at intervals along the axial direction of the supporting cylinder; the magnetic adjusting rings are arranged in the first accommodating cavity, the number of the magnetic adjusting rings is multiple, the magnetic adjusting rings and the multiple circles of communication ports are arranged in a one-to-one correspondence mode to form multiple magnetic adjusting sections, magnetic adjusting blocks are arranged on the outer peripheral sides of the magnetic adjusting rings, and the magnetic adjusting blocks extend into the communication ports.

Furthermore, the magnetic regulating ring structure also comprises a first end cover and a second end cover, wherein the first end cover is arranged at the position of a cylinder opening of the first axial end of the supporting cylinder; the second end cap is disposed at the mouth of the axial second end of the support cylinder.

Further, the magnetic gear component further comprises a supporting shaft, the supporting shaft is arranged in the first accommodating cavity and is coaxially arranged with the supporting cylinder, the first end of the supporting shaft is connected with the first end cover, the second end of the supporting shaft is connected with the second end cover, the supporting shaft comprises a driving section, and the first rotor structure is arranged on the outer peripheral side of the driving section.

Further, the driving portion comprises a first driving portion, the first driving portion is arranged at a position of the shaft section close to the first end of the supporting shaft, the first driving portion is provided with a first driving end, and the first driving end is used for being in driving connection with the first end of the driving section so as to drive the first rotor structure to move to the working position along the axial direction of the supporting shaft.

Further, the driving portion further comprises a second driving portion, the second driving portion is arranged at a position of the shaft section close to the second end of the supporting shaft, the second driving portion is provided with a second driving end, and the second driving end is used for being in driving connection with the second end of the driving section so as to drive the first rotor structure to move to the working position along the axial direction of the supporting shaft.

Further, the magnetic gear component also comprises a protective cylinder, a third end cover and a fourth end cover, wherein the protective cylinder is covered on the outer peripheral side of the partial magnetic ring adjusting structure, the protective cylinder is provided with a second accommodating cavity, and the second rotor structure is arranged in the second accommodating cavity; the third end cover is arranged at the position of the cylinder opening of the first axial end of the protective cylinder; the fourth end cover is arranged at the position of the cylinder opening of the axial second end of the protective cylinder.

Furthermore, the driving part also comprises a driving group, the driving group is arranged in the second accommodating cavity and comprises a first driving unit and a second driving unit, the first end of the first driving unit is connected with the third end cover, and the second end of the first driving unit is in driving connection with one axial side of the second rotor structure so as to drive the second rotor structure to move to different magnetism adjusting section positions along the axial direction of the supporting shaft; the first end of the second driving unit is connected with the fourth end cover, and the second end of the second driving unit is in driving connection with the other axial side of the second rotor structure so as to drive the second rotor structure to move to different magnetism adjusting section positions along the axial direction of the supporting shaft.

Furthermore, the driving set is a plurality of sets, and the plurality of sets of driving sets are arranged at intervals along the circumferential direction of the second rotor structure.

Further, the first end of the supporting shaft is provided with a first accommodating groove, and the first driving part is arranged in the first accommodating groove; the second end of the supporting shaft is provided with a second accommodating groove, and the second driving part is arranged in the second accommodating groove.

Furthermore, the groove wall surface of the first accommodating groove is provided with a ball; and/or the groove wall surface of the second accommodating groove is provided with a ball.

According to another aspect of the present invention, there is provided a compound motor comprising a magnet gear assembly as described above.

By applying the technical scheme of the invention, the magnetic adjusting part of the magnetic gear assembly is set to be in a structural form comprising a plurality of magnetic adjusting sections, and the rotor part is set to be in a structural form which can move relative to the magnetic adjusting part, so that when the output ratio of the magnetic gear assembly is adjusted, the drive part drives the rotor part to move relative to the magnetic adjusting part, and therefore, when the rotor part is switched from one working position to another working position in a plurality of working positions, the output ratio of the magnetic gear assembly is different, the speed adjusting range of the magnetic gear assembly is further improved, and the practicability of the magnetic gear assembly is improved.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 illustrates a cross-sectional structural schematic view of a magnet gear assembly according to an alternative embodiment of the present invention;

FIG. 2 illustrates an exploded view of the flux ring structure of the magnet gear assembly of FIG. 1;

fig. 3 shows a schematic view of the second rotor structure of the magnet gear assembly of fig. 1.

Wherein the figures include the following reference numerals:

10. a magnetic regulating ring structure; 11. a first accommodating chamber; 111. a communication port; 12. a magnetism adjusting section; 13. a support cylinder; 14. adjusting a magnetic ring; 141. a magnetic adjusting block; 15. a first end cap; 151. an extension end; 16. a second end cap; 20. a first rotor structure; 21. a magnetic element; 30. a second rotor structure; 31. a winding; 40. a support shaft; 41. a drive section; 42. a first accommodating groove; 43. a second accommodating groove; 50. a first driving section; 51. a first driving end; 60. a second driving section; 61. a second drive end; 70. a protective cylinder; 71. a second accommodating chamber; 80. a third end cap; 90. a fourth end cap; 100. a drive group; 110. a first drive unit; 120. a second driving unit; 200. and a ball.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In order to solve the problem that the speed regulation range of a magnetic gear assembly in the prior art is limited, the invention provides the magnetic gear assembly and a compound motor.

As shown in fig. 1, the magnetic gear assembly includes a magnetic modulating portion, a rotor portion and a driving portion, wherein the magnetic modulating portion has a plurality of magnetic modulating segments 12; the rotor part is movably arranged relative to the magnetic regulating part and is provided with a plurality of working positions, and each magnetic regulating section corresponds to one working position; the driving part is connected with the rotor part and is used for driving the rotor part to move relative to the magnetism regulating part, so that the output ratio of the magnetic gear assembly is different when the rotor part is switched from one working position to another working position in a plurality of working positions.

The magnetic regulating part of the magnetic gear assembly is set to be in a structural form comprising a plurality of magnetic regulating sections 12, and the rotor part is set to be in a structural form which is movable relative to the magnetic regulating part, so that when the output ratio of the magnetic gear assembly is regulated, the driving part drives the rotor part to move relative to the magnetic regulating part, and therefore when the rotor part is switched from one working position to another working position in a plurality of working positions, the output ratio of the magnetic gear assembly is different, the speed regulating range of the magnetic gear assembly is further improved, and the practicability of the magnetic gear assembly is favorably improved.

As shown in fig. 1 and 2, the magnetic adjustment portion includes a magnetic adjustment ring structure 10, the magnetic adjustment ring structure 10 has a first accommodating cavity 11, the rotor portion includes a first rotor structure 20, the first rotor structure 20 is disposed in the first accommodating cavity 11, a magnetic element 21 is disposed on an outer peripheral surface of the first rotor structure 20, and the first rotor structure 20 is movably disposed in an axial direction of the magnetic adjustment ring structure 10 so that the first rotor structure 20 has a plurality of operating positions.

As shown in fig. 1, the rotor portion further includes a second rotor structure 30, the second rotor structure 30 is disposed on the outer peripheral side of the magnetic flux regulating ring structure 10, the second rotor structure 30 includes a plurality of sets of windings 31, the plurality of sets of windings 31 are disposed at intervals along the radial direction of the second rotor structure 30, the number of pole pairs of the magnetic field generated by each set of windings 31 is different, and the second rotor structure 30 is movably disposed in the axial direction of the magnetic flux regulating ring structure 10 so that the second rotor structure 30 has a plurality of operating positions; the multiple sets of windings 31 correspond to the multiple magnetic adjustment sections 12 one by one, and when the first rotor structure 20 and the second rotor structure 30 move to the same working position, the number of poles of the magnetic adjustment sections 12 is equal to the sum of the number of pole pairs of the first rotor structure 20 and the number of pole pairs of the second rotor structure 30. In this way, by arranging the magnetic adjustment ring structure 10 of the magnetic gear assembly in a structural form including a plurality of magnetic adjustment segments 12 and arranging the first rotor structure 20 and the second rotor structure 30 in a structural form movable along the axial direction of the magnetic adjustment ring structure 10, when adjusting the output ratio of the magnetic gear assembly, only the first rotor structure 20 and the second rotor structure 30 need to be moved to the same position of the magnetic adjustment segment 12, since the second rotor structure 30 includes a plurality of sets of windings 31 corresponding to the plurality of magnetic adjustment segments 12 one by one, it is ensured that the number of poles of the magnetic adjustment segments 12 at the position is equal to the sum of the number of pole pairs of the first rotor structure 20 and the number of pole pairs of the second rotor structure 30 when the first rotor structure 20 and the second rotor structure 30 move to one position of the magnetic adjustment segments 12, thereby ensuring that the magnetic gear assembly can output the output ratio corresponding to the number of poles of the magnetic adjustment segments 12 at the position, and then promote the speed governing scope of magnetic gear subassembly, be favorable to promoting the practicality of magnetic gear subassembly.

In the present application, the number of poles of each magnetic field adjusting segment 12 of the magnetic field adjusting ring structure 10 of the magnet gear assembly is different.

As shown in fig. 1, the magnetic regulating ring structure 10 of the magnet gear assembly includes two magnetic regulating segments 12, and the number of poles of the two magnetic regulating segments 12 is different.

In the present application, the direct current is separately supplied to each set of windings 31 of the second rotor structure 30, and the windings 31 supplied with the direct current can generate magnetic fields corresponding to the number of pole pairs, so that the number of pole pairs of the magnetic fields generated by each set of windings 31 is different.

As shown in fig. 1 and 2, the magnetic flux regulating ring structure 10 includes a supporting cylinder 13 and a magnetic flux regulating ring 14, wherein the supporting cylinder 13 has a first accommodating cavity 11, a plurality of mounting portions are formed on a cavity wall surface of the first accommodating cavity 11, each mounting portion includes a plurality of communication ports 111, the plurality of communication ports 111 are arranged at intervals along a circumferential direction of the supporting cylinder 13, and the plurality of mounting portions are arranged at intervals along an axial direction of the supporting cylinder 13; the magnetic adjusting rings 14 are arranged in the first accommodating cavity 11, the number of the magnetic adjusting rings 14 is multiple, the multiple magnetic adjusting rings 14 are arranged in one-to-one correspondence with the multiple circles of the communication ports 111 to form multiple magnetic adjusting sections 12, a magnetic adjusting block 141 is arranged on the outer peripheral side of each magnetic adjusting ring 14, and the magnetic adjusting block 141 extends into the communication port 111. In this way, the support cylinder 13 plays a role in supporting the magnetic adjusting ring 14, and the installation reliability of the magnetic adjusting ring 14 is ensured.

As shown in fig. 1 and 2, the magnetic flux regulating ring structure 10 further includes a first end cover 15 and a second end cover 16, wherein the first end cover 15 is disposed at a position of a cylinder opening of the axial first end of the support cylinder 13; the second end cover 16 covers the position of the opening of the axial second end of the support cylinder 13. In this way, the first end cap 15 and the second end cap 16 play a role of axial fixing of the magnetic adjusting ring 14, and prevent axial movement of the magnetic adjusting ring 14.

Optionally, the first end cap 15 and the second end cap 16 are both connected to the support cylinder 13 by screws. In this way, the mounting reliability of the first end cap 15 and the second end cap 16 is ensured, thereby ensuring the reliability of the axial fixation of the magnetic flux regulating ring 14 by the first end cap 15 and the second end cap 16, and thus ensuring the overall structural strength of the magnetic flux regulating ring structure 10.

As shown in fig. 1, the magnet gear assembly further includes a support shaft 40, the support shaft 40 is disposed in the first accommodating chamber 11 and is disposed coaxially with the support cylinder 13, a first end of the support shaft 40 is connected with the first end cap 15, a second end of the support shaft 40 is connected with the second end cap 16, the support shaft 40 includes a driving section 41, and the first rotor structure 20 is disposed on an outer circumferential side of the driving section 41. In this way, the support shaft 40 functions to support the first rotor structure 20, and also can ensure the rotational reliability of the first rotor structure 20.

It should be noted that, in the present application, the first rotor structure 20 and the driving section 41 are in an interference fit, so that the first rotor structure 20 and the driving section 41 do not rotate relatively during the operation of the magnetic gear assembly.

As shown in fig. 1, the driving portion includes a first driving portion 50, the first driving portion 50 is disposed at a shaft section position near the first end of the supporting shaft 40, the first driving portion 50 has a first driving end 51, and the first driving end 51 is used for driving connection with the first end of the driving section 41 to drive the first rotor structure 20 to move to the working position along the axial direction of the supporting shaft 40. In this way, the movement reliability of the first rotor structure 20 is ensured.

As shown in fig. 1, the driving portion further includes a second driving portion 60, the second driving portion 60 is disposed at a shaft section position near the second end of the supporting shaft 40, the second driving portion 60 has a second driving end 61, and the second driving end 61 is used for driving connection with the second end of the driving section 41 so as to drive the first rotor structure 20 to move to the working position along the axial direction of the supporting shaft 40. Thus, in fig. 1, taking the case that the first rotor structure 20 moves from the left magnetic field adjusting section 12 to the right magnetic field adjusting section 12, the first driving end 51 of the first driving part 50 provides a pushing force to the driving section 41 to move to the right, and at the same time, the second driving end 61 of the second driving part 60 provides a pulling force to the driving section 41 to move to the right, so as to ensure that the first rotor structure 20 connected with the driving section 41 can smoothly and smoothly move to the right to the position of the right magnetic field adjusting section 12.

It should be noted that, in the present application, the first driving portion 50 and the second driving portion 60 are coaxially disposed, and the first driving portion 50 and the second driving portion 60 are oppositely disposed at two axial ends of the driving section 41,

of course, during the process that the first rotor structure 20 moves from the right magnetic adjustment section 12 to the left magnetic adjustment section 12, the first driving end 51 of the first driving portion 50 provides a pulling force for moving the driving section 41 to the left, and at the same time, the second driving end 61 of the second driving portion 60 provides a pushing force for moving the driving section 41 to the left, so as to ensure that the first rotor structure 20 connected with the driving section 41 can smoothly and smoothly move to the left magnetic adjustment section 12.

As shown in fig. 1, the magnetic gear assembly further includes a protective cylinder 70, a third end cover 80 and a fourth end cover 90, wherein the protective cylinder 70 is covered on the outer periphery side of the partial magnetic ring adjusting structure 10, the protective cylinder 70 has a second accommodating cavity 71, and the second rotor structure 30 is arranged in the second accommodating cavity 71; the third end cap 80 is covered at the position of the cylinder opening of the axial first end of the protective cylinder 70; the fourth end cap 90 is provided at the position of the mouth of the axial second end of the shield cylinder 70. Thus, the protective cylinder 70 plays a role in protecting the magnetic adjusting ring structure 10, and prevents the magnetic adjusting ring structure 10 from colliding with other external components; in addition, the third end cap 80 and the fourth end cap 90 play a role in limiting the axial direction of the magnetic adjusting ring structure 10, so that the magnetic adjusting ring structure 10 is prevented from moving axially, and the installation reliability of the magnetic adjusting ring structure 10 is ensured.

As shown in fig. 1, the first end cap 15 has a protruding end 151, and the protruding end 151 is disposed through the third end cap 80.

As shown in fig. 1, the driving part further includes a driving group 100, wherein the driving group 100 is disposed in the second accommodating cavity 71, the driving group 100 includes a first driving unit 110 and a second driving unit 120, a first end of the first driving unit 110 is connected to the third end cap 80, and a second end of the first driving unit 110 is in driving connection with one axial side of the second rotor structure 30, so as to drive the second rotor structure 30 to move to different magnetic adjustment sections 12 along the axial direction of the supporting shaft 40; a first end of the second driving unit 120 is connected to the fourth end cap 90, and a second end of the second driving unit 120 is connected to the other axial side of the second rotor structure 30 in a driving manner, so as to drive the second rotor structure 30 to move to different magnetic modulation section 12 positions along the axial direction of the support shaft 40. In this way, the reliability of the axial movement of the second rotor structure 30 is ensured, in fig. 1, taking the second rotor structure 30 moving from the left magnetic adjustment section 12 to the right magnetic adjustment section 12 in the right direction as an example, the first driving unit 110 provides the second rotor structure 30 with a thrust force moving in the right direction, and the second driving unit 120 provides the second rotor structure 30 with a pulling force moving in the right direction, so as to ensure that the second rotor structure 30 can smoothly and smoothly move to the right magnetic adjustment section 12 in the right direction.

Of course, during the process that the second rotor structure 30 moves from the right magnetism adjusting section 12 to the left magnetism adjusting section 12, the first driving unit 110 provides the second rotor structure 30 with a pulling force moving to the left, and the second driving unit 120 provides the second rotor structure 30 with a pushing force moving to the left, so as to ensure that the second rotor structure 30 can smoothly and smoothly move to the left magnetism adjusting section 12.

Optionally, the driving sets 100 are multiple sets, and the multiple sets of driving sets 100 are disposed at intervals along the circumferential direction of the second rotor structure 30. Thus, the multiple groups of driving sets 100 act together to ensure the axial movement stability of the second rotor structure 30, avoid the shaking phenomenon in the axial movement process due to the uneven stress of the second rotor structure 30, and ensure the axial operation reliability of the second rotor structure 30.

Preferably, the drive groups 100 are 3 groups, and the 3 groups of drive groups 100 are equally spaced along the circumferential direction of the second rotor structure 30.

As shown in fig. 1, the first end of the support shaft 40 has a first receiving groove 42, and the first driving part 50 is disposed in the first receiving groove 42; the second end of the support shaft 40 has a second receiving groove 43, and the second driving part 60 is disposed in the second receiving groove 43. In this way, the mounting reliability of the first and second driving parts 50 and 60 is ensured, and in addition, the first receiving groove 42 plays a role of protecting the first driving part 50, and the second receiving groove 43 plays a role of protecting the second driving part 60.

As shown in fig. 1, the groove wall surfaces of the first accommodation groove 42 are provided with balls 200. In this way, the outer peripheral surface of the first end of the driving section 41 is in contact with the outer surface of the ball 200, and the outer peripheral surface of the first end of the driving section 41 is in rolling contact with the groove wall surface of the first accommodating groove 42 of the supporting shaft 40, so that the friction between the two is ensured to be rolling friction, the service life of the driving section 41 is further ensured, and the driving section 41 is prevented from being worn after long-term use.

As shown in fig. 1, the groove wall surfaces of the second accommodation grooves 43 are provided with balls 200. In this way, the outer peripheral surface of the second end of the driving section 41 is in contact with the outer surface of the ball 200, and the outer peripheral surface of the second end of the driving section 41 is ensured to be in rolling contact with the groove wall surface of the second accommodating groove 43 of the supporting shaft 40, so that the friction between the two is ensured to be rolling friction, the service life of the driving section 41 is further ensured, and the driving section 41 is prevented from being worn after long-term use.

Alternatively, the first driving part 50 is a first cylinder and the second driving part 60 is a second cylinder.

Optionally, the magnetic flux regulating ring structure 10 includes n magnetic flux regulating segments 12, the magnetic gear assembly is capable of outputting n output ratios, the number of pole pairs of the first rotor structure 20 is P1, the number of pole pairs of the n magnetic flux regulating segments 12 of the magnetic flux regulating ring structure 10 is ni/P1(i is 1, 2, 3.), and the second rotor structure 30 includes n sets of windings 31, and the number of pole pairs generated after each set of windings 31 is energized is ni/P1-P1(i is 1, 2, 3.).

Alternatively, the n sets of windings 31 are arranged radially, and each set of windings 31 is evenly distributed along the circumferential direction of the second rotor structure 30. In this way, the symmetry of the magnetic field generated by each set of windings 31 is ensured after energization.

Preferably, if n is 2, the magnetic gear assembly provided by the present application can output 2 output ratios, the magnetic flux modulating ring structure 10 includes 2 magnetic flux modulating sections 12, the number of poles of the magnetic flux modulating ring structure 10 including the 2 magnetic flux modulating sections 12 is n1/P1 and n2/P1, as shown in fig. 3, the second rotor structure 30 includes 2 sets of windings 31, and the number of pole pairs generated after each set of windings 31 is energized is n1/P1-P1 and n 2/P1-P1.

Specifically, in the present application, the number of pole pairs P1 of the first rotor structure 20 is 2, the number of pole pairs of the 2 magnetic modulating segments 12 of the magnetic modulating ring structure 10 is 23 and 25, respectively, the second rotor structure 30 includes 2 sets of windings 31, the number of pole pairs of the magnetic field generated by the 2 sets of windings 31 is 21 and 23, respectively, and the output ratio of the magnetic gear assembly is 11.5 and 12.5, respectively.

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 according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

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 according to the present application. As used herein, the singular is intended to include the plural unless the context clearly dictates otherwise, and it should be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of features, steps, operations, devices, components, and/or combinations thereof.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in sequences other than those illustrated or described herein.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.