Right-angle magnetic coupling of Halbach structure

Abstract

A right-angle type magnetic coupler of a Halbach structure comprises a driving wheel and a driven wheel, the driving wheel comprises a first base body, a first iron ring arranged on the first base body and a first magnetic ring arranged on the first iron ring, and the driven wheel comprises a second base body and a second magnetic ring arranged on the second iron ring. The driven wheel comprises a second base body, a second iron ring surrounding the second base body and a second magnetic ring surrounding the second iron ring. According to the right-angle type magnetic coupler of the Halbach structure, the gear of the driving wheel is the first magnetic steel, the gear of the driven wheel is the second magnetic steel, and the outer circle end face of the driving wheel is opposite to the outer circle face of the driven wheel, so that when the driving wheel rotates, the driven wheel is driven to rotate along with the driving wheel through interaction force between the magnetic steel; through the Halbach array of the first magnetic ring of the driving wheel, the outer circle end face of the driving wheel is a strong magnetic face, the Halbach array of the second magnetic ring of the driven wheel enables the outer circle face of the driven wheel to be a strong magnetic face, and larger torque transmission of the coupler is achieved.

Description

Technical Field

[0001] The utility model relates to a right-angle magnetic coupling with a Halbach structure. Background Art

[0002] The coupling is a mechanical component used to firmly connect the driving shaft and the driven shaft in different mechanisms to rotate together and transmit motion and torque. The right-angle coupling is a mechanical component that connects two shafts set at right angles. The magnetic coupling is a non-contact coupling, generally composed of two magnets, the inner magnet is connected to the driven part, and the outer magnet is connected to the power part. It uses magnetic coupling to achieve force and torque transmission between the driving shaft and the driven shaft without direct contact. The magnetic field arrangement of the right-angle magnetic coupling on the market is the conventional N-pole and S-pole arrangement. The process is relatively simple and mature, but the torque of the coupling is small, and the utilization rate of the magnetic steel is small and the amount used is large. The production cost will be higher and it is not environmentally friendly. Utility Model Content

[0003] The utility model provides a right-angle magnetic coupling with a Halbach structure.

[0004] The technical solution adopted by the utility model to solve the above technical problems is:

[0005] A right-angle magnetic coupling of a Halbach structure comprises a driving wheel and a driven wheel, wherein the driving wheel comprises a first substrate, a first iron ring arranged on the first substrate and a first magnetic ring arranged on the first iron ring, and the driven wheel comprises a second substrate, a second iron ring surrounding the second substrate and a second magnetic ring surrounding the second iron ring, the axis of the driving wheel and the axis of the driven wheel are perpendicular to each other, the outer surface of the first magnetic ring is covered with a first outer cover, the outer surface of the second magnetic ring is covered with a second outer cover, the end of the first outer cover of the driving wheel is an outer cylindrical end face, the side wall of the second outer cover of the driven wheel is an outer cylindrical surface, the outer cylindrical end face of the driving wheel is opposite to the outer cylindrical surface of the driven wheel, the first magnetic ring is a circular ring body spliced ​​clockwise by a first magnetic steel, a second magnetic steel, a third magnetic steel and a fourth magnetic steel, the magnetization direction of the first magnetic steel is along the tangential direction of the first magnetic ring and faces the second magnetic steel and faces away from the fourth magnetic steel, and the magnetization direction of the second magnetic steel is The direction is back to the first iron ring, the magnetization direction of the third magnetic steel is along the tangential direction of the first magnetic ring and faces the second magnetic steel and back to the fourth magnetic steel, the magnetization direction of the fourth magnetic steel faces the first iron ring, the magnetic field arrangement mode of the first magnetic ring is Halbach array, the outer cylindrical end face of the driving wheel is a strong surface magnetic surface, the second magnetic ring is a circular ring body formed by clockwise splicing of the fifth magnetic steel, the sixth magnetic steel, the seventh magnetic steel and the eighth magnetic steel, the magnetization direction of the fifth magnetic steel is along the tangential direction of the second magnetic ring and back to the sixth magnetic steel and towards the eighth magnetic steel, the magnetization direction of the sixth magnetic steel is in the opposite direction and inward along the radius of the second magnetic ring, the magnetization direction of the seventh magnetic steel is along the tangential direction of the second magnetic ring and faces the eighth magnetic steel and back to the sixth magnetic steel, the magnetization direction of the eighth magnetic steel is along the radius direction of the second magnetic ring and outward, the magnetic field arrangement mode of the second magnetic ring is Halbach array, and the outer cylindrical surface of the driven wheel is a strong surface magnetic surface.

[0006] Preferably, the first outer cover is made of stainless steel, and the second outer cover is made of stainless steel.

[0007] Preferably, the first magnetic steel and the third magnetic steel are of the same size, the second magnetic steel and the fourth magnetic steel are of the same size, the first magnetic steel and the third magnetic steel are narrower than the second magnetic steel and the fourth magnetic steel, the fifth magnetic steel and the seventh magnetic steel are of the same size, the sixth magnetic steel and the eighth magnetic steel are of the same size, and the fifth magnetic steel and the seventh magnetic steel are narrower than the sixth magnetic steel and the eighth magnetic steel.

[0008] Preferably, the first base body is composed of a first disk-shaped body, a first small annular body arranged at the upper end of the first disk-shaped body, and an incompletely closed first large annular body arranged at the lower end of the disk-shaped body, and the unclosed end of the first large annular body is fixed by a screw.

[0009] Preferably, a first axial hole is provided at the axial center of the first base body.

[0010] Preferably, the second base body is composed of a second disc-shaped body, a second large circular body arranged at the upper end of the second disc-shaped body and an incompletely enclosed second small circular body arranged under the disc-shaped body, the unenclosed end of the second small circular body is fixed by screws, and the side wall of the second small circular body is provided with fixing screws.

[0011] Preferably, a second axial hole is provided at the axial center of the second base body.

[0012] Compared with the prior art, the utility model discloses a right-angle magnetic coupling with a Halbach structure, in which the gear of the driving wheel is the first magnetic steel, the gear of the driven wheel is the second magnetic steel, the outer cylindrical end face of the driving wheel is opposite to the outer cylindrical surface of the driven wheel, and when the driving wheel rotates, the interaction force between the magnetic steels is utilized to drive the driven wheel to rotate along with the driving wheel, and the Halbach array of the first magnetic ring of the driving wheel makes the outer cylindrical end face of the driving wheel a strong magnetic surface, and the Halbach array of the second magnetic ring of the driven wheel makes the outer cylindrical surface of the driven wheel a strong magnetic surface, thereby achieving greater torque transmission of the coupling, and under the same torque requirement, less magnetic material is required, thereby increasing the utilization rate of the magnetic material, saving magnetic steel raw materials, and saving product manufacturing costs; at the same time, the magnetic density and power of the working surface of the product are higher, and the magnetism of the non-working surface is greatly reduced, thereby effectively avoiding the influence of the non-working surface on the working surface and other magnetically sensitive components. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a three-dimensional schematic diagram of a right-angle magnetic coupling of a Halbach structure according to the present invention.

[0014] Figure 2 It is a cross-sectional view of a right-angle magnetic coupling of a Halbach structure according to the utility model.

[0015] Figure 3 The utility model is a schematic diagram of a driving wheel of a right-angle magnetic coupling of a Halbach structure.

[0016] Figure 4 The utility model is a schematic diagram of a driven wheel of a right-angle magnetic coupling of a Halbach structure. DETAILED DESCRIPTION

[0017] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0018] like Figures 1 to 4 As shown, a right-angle magnetic coupling of a Halbach structure includes a driving wheel 1 and a driven wheel 2.

[0019] The driving wheel 1 includes a first substrate 11, a first iron ring 12 arranged on the first substrate 11, and a first magnetic ring 13 arranged on the first iron ring 12. The driven wheel 2 includes a second substrate 21, a second iron ring 22 surrounding the second substrate 21, and a second magnetic ring 23 surrounding the second iron ring 22. The first magnetic ring 13 is a gear of the driving wheel 1, and the outer surface of the first magnetic ring 13 is covered with a first outer cover 14, and the material of the first outer cover 14 is stainless steel. The second magnetic ring 23 is a gear of the driven wheel 2, and the outer surface of the second magnetic ring 23 is covered with a second outer cover 24, and the material of the second outer cover 24 is stainless steel. The axis of the driving wheel 1 and the axis of the driven wheel 2 are perpendicular to each other. The end of the first outer cover 14 of the driving wheel 1 is an outer circular end surface 141, and the side wall of the second outer cover 24 of the driven wheel 2 is an outer circular surface 241. The outer circular end surface 141 of the driving wheel 1 is opposite to the outer circular surface 241 of the driven wheel 2. When the driving wheel 1 rotates, the interaction force between the magnetic steels is used to drive the driven wheel 2 to rotate with the driving wheel.

[0020] The first base 11 is composed of a first disk-shaped body, a first small annular body arranged at the upper end of the first disk-shaped body, and a first large annular body that is not completely closed and is arranged at the lower end of the disk-shaped body, and the unclosed end of the first large annular body is fixed by screws. The axis of the first base 11 is provided with a first shaft hole 111, and the first shaft hole 111 is used to connect the transmission shaft.

[0021] The second base 21 is composed of a second disc-shaped body, a second large annular body arranged at the upper end of the second disc-shaped body, and a second small annular body that is not completely closed and arranged under the disc-shaped body, and the unclosed end of the second small annular body is fixed by screws. The axis of the second base 21 is provided with a second axial hole 211, and the second axial hole 211 is used to connect the transmission shaft. The side wall of the second small annular body is provided with fixing screws for reinforcing the transmission shaft.

[0022] The first magnetic ring 13 is a circular ring body formed by splicing the first magnetic steel 131, the second magnetic steel 132, the third magnetic steel 133 and the fourth magnetic steel 134 clockwise. The first magnetic steel 131 and the third magnetic steel 133 are of the same size, the second magnetic steel 132 and the fourth magnetic steel 134 are of the same size, and the first magnetic steel 131 and the third magnetic steel 133 are narrower than the second magnetic steel 132 and the fourth magnetic steel 134. The magnetizing direction of the first magnetic steel 131 is along the tangential direction of the first magnetic ring 13 and faces the second magnetic steel 132 and faces away from the fourth magnetic steel 134. The magnetizing direction of the second magnetic steel 132 faces away from the first iron ring 12. The magnetizing direction of the third magnetic steel 133 is along the tangential direction of the first magnetic ring 13 and faces the second magnetic steel 132 and faces away from the fourth magnetic steel 134. The magnetizing direction of the fourth magnetic steel faces the first iron ring 12. The magnetic field arrangement of the first magnetic ring 13 is a Halbach array. The outer cylindrical end surface 141 of the driving wheel 1 is a strong surface magnetic surface.

[0023] The second magnetic ring 23 is a circular ring body formed by splicing the fifth magnetic steel 231, the sixth magnetic steel 232, the seventh magnetic steel 233 and the eighth magnetic steel 234 clockwise. The fifth magnetic steel 231 and the seventh magnetic steel 233 are of the same size, the sixth magnetic steel 232 and the eighth magnetic steel 234 are of the same size, and the fifth magnetic steel 231 and the seventh magnetic steel 233 are narrower than the sixth magnetic steel 232 and the eighth magnetic steel 231. The magnetizing direction of the fifth magnetic steel 231 is along the tangential direction of the second magnetic ring 23 and is away from the sixth magnetic steel 232 and toward the eighth magnetic steel 234. The magnetizing direction of the sixth magnetic steel 232 is along the radial direction of the second magnetic ring 23 and is inward. The magnetizing direction of the seventh magnetic steel 233 is along the tangential direction of the second magnetic ring 23 and is toward the eighth magnetic steel 234 and away from the sixth magnetic steel 232. The magnetizing direction of the eighth magnetic steel 234 is along the radial direction of the second magnetic ring 23 and is outward. The magnetic field arrangement of the second magnetic ring 23 is a Halbach array. The outer cylindrical surface 241 of the driven wheel 2 is a strong surface magnetic surface.

[0024] The outer cylindrical end face 141 of the driving wheel 1 is a strong magnetic surface, and the outer cylindrical surface 241 of the driven wheel 2 is a strong magnetic surface, which realizes greater torque transmission of the coupling. Under the same torque requirement, less magnetic material is required, which increases the utilization rate of magnetic materials, saves magnetic steel raw materials, and saves product manufacturing costs; at the same time, the magnetic density and power of the working surface of the product are higher, and the magnetism of the non-working surface is greatly reduced, which effectively avoids the influence of the non-working surface on the working surface and other magnetically sensitive components.

[0025] The utility model discloses a right-angle magnetic coupling of Halbach structure, in which the gear of the driving wheel 1 is the first magnetic steel 13, the gear of the driven wheel 2 is the second magnetic steel 23, the outer cylindrical end face 141 of the driving wheel 1 is opposite to the outer cylindrical surface 241 of the driven wheel 2, when the driving wheel 1 rotates, the interaction force between the magnetic steels is utilized to drive the driven wheel 2 to rotate following the driving wheel, the Halbach array of the first magnetic ring 13 of the driving wheel 1 makes the outer cylindrical end face 141 of the driving wheel 1 a strong magnetic surface, and the Halbach array of the second magnetic ring 23 of the driven wheel 2 makes the outer cylindrical surface 241 of the driven wheel 2 a strong magnetic surface, so that greater torque transmission of the coupling is achieved, less magnetic material is required under the demand of the same torque, the utilization rate of the magnetic material is increased, the raw materials of the magnetic steel are saved, and the manufacturing cost of the product is saved; at the same time, the magnetic density and power of the working surface of the product are higher, the magnetism of the non-working surface is greatly reduced, and the influence of the non-working surface on the working surface and other magnetic sensitive components is effectively avoided.

[0026] Finally, it should be noted that the above embodiments only illustrate the technical solutions of the present invention, rather than limiting it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A right-angle magnetic coupling of a Halbach structure, comprising a driving wheel (1) and a driven wheel (2), wherein the driving wheel (1) comprises a first substrate (11), a first iron ring (12) arranged on the first substrate (11), and a first magnetic ring (13) arranged on the first iron ring (12); the driven wheel (2) comprises a second substrate (21), a second iron ring (22) surrounding the second substrate (21), and a second magnetic ring (23) surrounding the second iron ring (22); the driving wheel (1) The axis of the first magnetic ring (13) is perpendicular to the axis of the driven wheel (2); the outer surface of the first magnetic ring (13) is covered with a first outer cover (14); the outer surface of the second magnetic ring (23) is covered with a second outer cover (24); the end of the first outer cover (14) of the driving wheel (1) is an outer circular end surface (141); the side wall of the second outer cover (24) of the driven wheel (2) is an outer circular surface (241); the outer circular end surface (141) of the driving wheel (1) is opposite to the outer circular surface (241) of the driven wheel (2); and the invention is characterized in that: The first magnetic ring (13) is a circular ring body formed by clockwise splicing of a first magnetic steel (131), a second magnetic steel (132), a third magnetic steel (133) and a fourth magnetic steel (134); the magnetization direction of the first magnetic steel (131) is along the tangential direction of the first magnetic ring (13) and faces the second magnetic steel (132) and is away from the fourth magnetic steel (134); the magnetization direction of the second magnetic steel (132) is away from the first iron ring (12); the magnetization direction of the third magnetic steel (133) is along the tangential direction of the first magnetic ring (13) and faces the second magnetic steel (132) and is away from the fourth magnetic steel (134); the magnetization direction of the fourth magnetic steel faces the first iron ring (12); the magnetic field arrangement of the first magnetic ring (13) is a Halbach array; the outer cylindrical end surface (141) of the driving wheel (1) is a strong surface magnetic surface; the second magnetic ring (23 ) is a circular ring body formed by splicing a fifth magnetic steel (231), a sixth magnetic steel (232), a seventh magnetic steel (233) and an eighth magnetic steel (234) in a clockwise direction, the magnetizing direction of the fifth magnetic steel (231) is along the tangential direction of the second magnetic ring (23) and is away from the sixth magnetic steel (232) and towards the eighth magnetic steel (234), the magnetizing direction of the sixth magnetic steel (232) is along the radial direction of the second magnetic ring (23) and is inward, the magnetizing direction of the seventh magnetic steel (233) is along the tangential direction of the second magnetic ring (23) and is towards the eighth magnetic steel (234) and away from the sixth magnetic steel (232), the magnetizing direction of the eighth magnetic steel (234) is along the radial direction of the second magnetic ring (23) and is outward, the magnetic field arrangement of the second magnetic ring (23) is a Halbach array, and the outer circumferential surface (241) of the driven wheel (2) is a strong surface magnetic surface.

2. A right-angle magnetic coupling of a Halbach structure according to claim 1, characterized in that: The material of the first outer cover (14) is stainless steel, and the material of the second outer cover (24) is stainless steel.

3. A right-angle magnetic coupling of Halbach structure according to claim 1, characterized in that: The first magnetic steel (131) and the third magnetic steel (133) are of the same size, the second magnetic steel (132) and the fourth magnetic steel (134) are of the same size, the first magnetic steel (131) and the third magnetic steel (133) are narrower than the second magnetic steel (132) and the fourth magnetic steel (134), the fifth magnetic steel (231) and the seventh magnetic steel (233) are of the same size, the sixth magnetic steel (232) and the eighth magnetic steel (234) are of the same size, the fifth magnetic steel (231) and the seventh magnetic steel (233) are narrower than the sixth magnetic steel (232) and the eighth magnetic steel (234).

4. A Halbach right-angle magnetic coupling according to claim 1, characterized in that: The first base (11) is composed of a first disc-shaped body, a first small annular body arranged at the upper end of the first disc-shaped body, and a first large annular body that is not completely closed and is arranged at the lower end of the disc-shaped body. The unclosed end of the first large annular body is fixed by means of screws.

5. The right-angle magnetic coupling of Halbach structure according to claim 1, characterized in that: The first base body (11) is provided with a first axial hole (111) at its axial center.

6. A Halbach structure right-angle magnetic coupling according to claim 1, characterized in that: The second base (21) is composed of a second disc-shaped body, a second large annular body arranged at the upper end of the second disc-shaped body, and a second small annular body that is not completely closed and is arranged under the disc-shaped body. The unclosed end of the second small annular body is fixed by means of screws, and the side wall of the second small annular body is provided with fixing screws.

7. The right-angle magnetic coupling of Halbach structure according to claim 1, characterized in that: A second axial hole (211) is provided at the axial center of the second base body (21).

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