Magnetic adjusting assembly, magnetic gear, counter-rotating motor and fan

Abstract

The utility model provides a magnetism adjusting assembly, a magnetic gear, a contra-rotating motor and a fan, the magnetism adjusting assembly is used for a motor, and the magnetism adjusting assembly comprises an installation support; the magnetism adjusting ring comprises a mounting piece; the installation part is installed on the installation support, the multiple magnetism adjusting teeth are installed on the installation part at intervals in the first circumferential direction, a magnetism isolating hole is formed between every two adjacent magnetism adjusting teeth, the ends, in the length direction, of the multiple magnetism adjusting teeth are connected with the installation part, and the other ends, in the length direction, of the multiple magnetism adjusting teeth are arranged in a suspended mode; and the mounting piece and the plurality of magnetism adjusting teeth are of an integrated structure. According to the magnetic adjusting assembly, most areas of the plurality of magnetic adjusting teeth along the length direction are not connected, so that magnetic isolating holes with larger spaces are formed among the plurality of magnetic adjusting teeth, magnetic leakage can be effectively prevented, and the magnetic moment transmission effect between the driven rotor and the driving rotor is improved. Therefore, when the magnetism adjusting ring is used for the magnetic gear, the load capacity of the magnetic gear can be improved, and the out-of-step risk of the magnetic gear is reduced.

Description

[0001] The applicant declares that this application claims priority to Chinese Patent Application No. 202423323750.0, filed with the China Patent Office on December 31, 2024, entitled "Magnetic Adjustment Component, Magnetic Gear, Counter-rotating Motor and Fan", the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of household appliance technology, and more specifically, to a magnetic adjustment component, a magnetic gear, a counter-rotating motor, and a fan. Background Technology

[0003] In most related solutions, the motors are single-shaft output, unable to simultaneously output two different speeds or directions of rotation. To achieve two different speeds or directions of rotation in a single-shaft motor, a mechanical gear mechanism is typically used. However, mechanical gears generate mechanical noise due to the mechanical contact, making them unsuitable for applications requiring low noise levels. Compared to mechanical gears, magnetic gears offer advantages such as no mechanical friction, low vibration, low noise, and overload protection. A magnetic gear structure includes a driving rotor, a driven rotor, and a magnetic adjusting ring. The adjusting ring is positioned between the driving and driven rotors to adjust the magnetic circuit between them. The magnitude of torque fluctuation directly affects the performance of the magnetic gear structure. In related technologies, the magnetic adjusting ring's design is often flawed. This leads to severe magnetic leakage during operation, resulting in low load capacity of the magnetic gear structure. Furthermore, it causes significant output torque fluctuations, increasing the risk of loss of synchronization.

[0004] Therefore, how to propose a magnetic adjusting ring, magnetic gear, and motor that can increase the load of the magnetic gear structure, reduce the output torque fluctuation of the magnetic gear structure, and reduce the risk of step loss of the magnetic gear structure has become an urgent problem to be solved. Utility Model Content

[0005] The present invention aims to at least solve the problems of large output torque fluctuation and high risk of step loss in magnetic gear structures in existing or related technologies.

[0006] Therefore, the first objective of this invention is to provide a magnetic adjustment component.

[0007] The second objective of this invention is to provide a magnetic gear.

[0008] The third objective of this invention is to provide a counter-rotating motor.

[0009] The fourth objective of this invention is to provide a fan.

[0010] To achieve the above objectives, the first aspect of this utility model provides a magnetic adjustment component, comprising: a mounting bracket; a magnetic adjustment ring including a mounting component; and a plurality of magnetic adjustment teeth, wherein the mounting component is mounted on the mounting bracket, the plurality of magnetic adjustment teeth are spaced apart on the mounting component along a first circumferential direction, and a magnetic isolation hole is formed between adjacent magnetic adjustment teeth, one end of the plurality of magnetic adjustment teeth along the length direction is connected to the mounting component, and the other end of the plurality of magnetic adjustment teeth along the length direction is suspended; the mounting component and the plurality of magnetic adjustment teeth are an integral structure.

[0011] The magnetic adjustment assembly provided by this utility model is specifically used in a motor. The magnetic adjustment assembly includes a mounting bracket and a magnetic adjustment ring. The mounting bracket is used to mount the entire magnetic adjustment ring on the motor. The magnetic adjustment ring includes a mounting component and multiple magnetic adjustment teeth. Magnetic isolation holes are formed between the multiple magnetic adjustment teeth. The magnetic adjustment teeth are magnetically conductive, capable of guiding the magnetic circuit between the driven rotor and the driving rotor, thereby enabling the driven rotor and the driving rotor to rotate in opposite directions. Furthermore, the mounting component is located at one end of the multiple magnetic adjustment teeth along their length; that is, the mounting component only connects one end of the multiple magnetic adjustment teeth along their length, meaning that most of the area along the length of the multiple magnetic adjustment teeth is unconnected. This creates a relatively large space for the magnetic isolation holes between the multiple magnetic adjustment teeth, effectively preventing magnetic leakage and improving the magnetic moment transmission effect between the driven rotor and the driving rotor. Thus, when the magnetic adjustment ring is used in a magnetic gear, it can improve the load capacity of the magnetic gear and reduce the risk of the magnetic gear losing synchronization.

[0012] Meanwhile, in this structure, one end of the magnetic adjusting ring is mounted on the mounting bracket, while the other end is suspended, which facilitates the connection between the magnetic adjusting ring and the driving and driven rotors of the motor. Furthermore, because the magnetic adjusting assembly has its own mounting bracket, this structure allows for quick and easy installation of the magnetic adjusting assembly onto the motor.

[0013] The mounting component and multiple adjusting teeth are integrated into a single structure. Furthermore, the mounting component and multiple adjusting teeth are integrally formed; for example, a portion of material can be removed from a ring-shaped component along the circumferential direction to create a structure including the mounting component, multiple adjusting teeth, and multiple magnetic isolation holes. Alternatively, the mounting component and multiple adjusting teeth can be welded together to form a single integrated structure.

[0014] Of course, in other solutions, the mounting and multiple adjusting teeth can also be two independent, detachable parts.

[0015] In any of the above embodiments, optionally, the mounting component includes a mounting ring, a plurality of adjusting teeth are arranged along the axial direction of the mounting ring, the mounting bracket includes a mounting plate, a limiting structure is provided on the mounting plate, and one end of the adjusting ring near the mounting ring is mounted on the mounting plate and limited by the limiting structure.

[0016] In this embodiment, the mounting component includes a mounting ring, with multiple adjusting teeth mounted axially along the mounting ring. The mounting bracket can be configured as a plate-like structure, and one end of the adjusting ring is mounted on one side of the plate-like structure. Simultaneously, to quickly determine the mounting position of the adjusting ring on the mounting bracket, a limiting structure can be provided on the mounting plate. This limiting structure can more accurately define the mounting position of the adjusting ring, preventing improper installation of the adjusting ring from affecting the magnetic moment transmission between the driven rotor and the driving rotor.

[0017] In any of the above embodiments, optionally, the mounting component includes a mounting ring, and a plurality of adjusting teeth are arranged radially on the inner side of the mounting ring; the mounting bracket includes a mounting sleeve, and the adjusting ring is mounted on the inner side of the mounting sleeve.

[0018] In this embodiment, the mounting component includes a mounting ring, with multiple adjusting teeth mounted radially along the mounting ring. The mounting bracket can be configured as a sleeve, and the outer end of the adjusting ring is then mounted on the inner side of the mounting sleeve. Simultaneously, to quickly determine the mounting position of the adjusting ring on the mounting sleeve, a limiting structure can be provided on the mounting plate. This limiting structure allows for more precise determination of the adjusting ring's mounting position, preventing improper installation that could affect the magnetic moment transmission between the driven and driving rotors.

[0019] In the above technical solution, optionally, magnetic isolation grooves are provided on one or both ends of the magnetic adjustment teeth along the length direction.

[0020] In this technical solution, by setting up magnetic isolation grooves, the magnetic leakage at both ends of the adjusting gear along the radial direction can be reduced, thereby further improving the magnetic moment transmission effect between the driven rotor and the driving rotor. Therefore, when the adjusting ring is used for the magnetic gear, the load capacity of the magnetic gear can be further improved, and the risk of the magnetic gear losing synchronization can be reduced.

[0021] In the above technical solution, optionally, the magnetic adjustment tooth includes two ends arranged along the length direction, and the magnetic isolation groove is provided with a chamfer, which is arranged on the side of the magnetic isolation groove near the end.

[0022] In this technical solution, since the magnetic isolation groove is located relatively close to the end, the structural strength of the magnetic adjustment ring at the end is relatively weak. Therefore, in order to increase the wall thickness of the magnetic adjustment teeth at the end, a chamfer can be provided at the connection between the two sides of the magnetic isolation groove near the end. This can appropriately increase the thickness of the magnetic isolation groove near the end, thereby improving the structural strength of the magnetic adjustment ring.

[0023] Furthermore, the magnetic shielding groove is provided with chamfers at one or both ends along the first circumferential direction. That is, only one chamfer can be provided on the side of the magnetic shielding groove near the end for single-sided structural reinforcement, or two chamfers can be provided for double-sided structural reinforcement.

[0024] In the above technical solution, optionally, the diameter of the chamfer is v, where 0.3mm ≤ v ≤ 2mm. When v is less than 0.3mm, the area of ​​the chamfer is small and cannot reinforce the magnetic bridge; when v is greater than 2mm, the area of ​​the chamfer is large, resulting in greater magnetic leakage at the magnetic bridge and reducing the magnetic transmission efficiency.

[0025] Optionally, in the above technical solution, the magnetic ring further includes a reinforcing structure, which is provided on one side of the magnetic isolation groove near the end, and the magnetic isolation groove is provided with a reinforcing structure at one or both ends along the first circumferential direction.

[0026] In this technical solution, a reinforcing structure can be provided near the magnetic isolation groove to increase the structural strength of the magnetic guide teeth. Specifically, a reinforcing structure can be provided at each of the left and right ends of the magnetic isolation groove near its end to enhance the overall structural strength of the magnetic adjusting ring.

[0027] In one specific design, the magnetic isolation groove is equipped with both a chamfer and reinforcement, thus providing a double reinforcement of the structural strength of the magnetic ring through the chamfer and reinforcement structure.

[0028] In the above technical solution, optionally, the mounting component includes a mounting ring. The mounting ring has a simpler structure, and because the central part of the mounting ring is hollow, it can further prevent magnetic field leakage through the mounting component.

[0029] Optionally, in the above technical solution, the adjusting ring further includes a connecting ring, which is connected to the end of the plurality of adjusting teeth away from the mounting component, and the connecting ring and the mounting ring are spaced apart along the length direction.

[0030] In this technical solution, multiple adjusting teeth are connected at both ends along their length by two mounting rings. This ensures the strength of the adjusting ring and prevents deformation of the teeth during operation. Simultaneously, this structure, using two mounting rings, simplifies the structure of the adjusting ring and improves its magnetic shielding effect, preventing magnetic leakage due to the mounting structure at both ends.

[0031] Optionally, multiple adjusting teeth are arranged along the axial direction of the mounting ring, and the mounting ring and connecting ring are spaced apart along the axial direction of the mounting ring; or multiple adjusting teeth are arranged radially on the inner side of the mounting ring, and the mounting ring and connecting ring are spaced apart along the radial direction of the mounting ring.

[0032] The mounting ring and connecting ring can be spaced apart radially to form one type of magnetizing structure. Alternatively, they can be spaced apart axially to form another type of magnetizing structure. This allows for greater variety in the shape of the magnetizing structure. During manufacturing, the shape of the magnetizing structure can be appropriately set according to the actual conditions of the motor.

[0033] In the above technical solution, optionally, the inner diameter of the mounting ring is Z, the inner diameter of the adjusting ring is V, Z = V, and / or, the outer diameter of the mounting ring is Y, the outer diameter of the adjusting ring is X, 6mm ≤ YX ≤ 20mm, and / or, the thickness of the mounting ring is h1, 0.5mm ≤ h1 ≤ 3mm; and / or, the outer diameter of the connecting ring is A, the outer diameter of the adjusting ring is X, A = X, and / or, the inner diameter of the connecting ring is C, the inner diameter of the adjusting ring is V, 1mm ≤ VC ≤ 6mm, and / or, the thickness of the connecting ring is h2, 0.5mm ≤ h2 ≤ 3mm.

[0034] In this technical solution, when YX is less than 6mm, the width of the mounting ring is too small, and its reinforcing effect is minimal, failing to provide a stable connection between the adjusting ring and the fixing plate (i.e., the mounting bracket). When YX is greater than 20mm, it occupies excessive radial space, resulting in wasted space. When h1 is less than 0.5mm, the mounting ring has low strength, easily causing deformation and swaying. When h1 is greater than 3mm, it results in wasted axial space. When VC is less than 1mm, the width of the connecting ring is too small, failing to provide reinforcement. When VC is greater than 6mm, the excessive width of the connecting ring easily increases magnetic leakage, reducing magnetic transmission efficiency. When h2 is less than 0.5mm, the structural strength of the connecting ring is low, and the adjusting ring is prone to deformation and swaying, causing mechanical friction; when h2 is greater than 3mm, increased magnetic leakage results in low magnetic transmission efficiency and wastes axial space.

[0035] In the above technical solution, optionally, the connecting ring and the multiple adjusting teeth are connected by welding or by adhesive. That is, the connecting ring and the multiple adjusting teeth are separately machined parts, and the two are connected in a later stage.

[0036] In the above technical solution, the adjusting ring can optionally be a metal magnetic ring or a non-metal magnetic ring. This application does not specifically limit the material of the adjusting ring, as long as it is magnetically conductive. Therefore, the adjusting ring can be set as a metal magnetic ring or a non-metal magnetic ring depending on the actual situation.

[0037] Optionally, in the above technical solution, the magnetic ring further includes a filler, disposed in the magnetic isolation hole, wherein the filler is a non-magnetic material.

[0038] In this technical solution, a filler with a better magnetic shielding effect than air can be added to the magnetic shielding hole to enhance the magnetic shielding effect of the adjusting ring. Alternatively, no material can be placed in the magnetic shielding hole; in this case, magnetic shielding can be achieved using air.

[0039] In the above technical solution, optionally, the mounting part is circular, and multiple magnetic adjustment teeth are arranged radially on the inner side of the mounting part. When the mounting part and the connecting ring are arranged radially spaced apart, the length direction of the multiple magnetic adjustment teeth is the radial direction of the mounting part. When the multiple magnetic adjustment teeth are arranged axially along the mounting part, and the mounting part and the connecting ring are arranged axially spaced apart, the length direction of the multiple magnetic adjustment teeth is the axial direction of the mounting part.

[0040] In the above technical solution, optionally, the adjusting magnetic ring is used in a counter-rotating motor, which includes a driving rotor and a driven rotor. The adjusting magnetic ring is located between the driving rotor and the driven rotor, and the number of magnetic isolation holes is Q, where Q = (P1 + P2) / 2, where P1 is the number of poles of the driving rotor and P2 is the number of poles of the driven rotor.

[0041] In the above technical solution, optionally, the adjusting ring is a soft magnetic adjusting ring, that is, an adjusting ring made of soft magnetic material. Soft magnetic material is a magnetic material with low coercivity and high permeability. Soft magnetic material is easy to magnetize and demagnetize, and has the characteristics of a narrow and steep hysteresis loop, a nearly reversible magnetization process, low hysteresis loss, high permeability, and low coercivity.

[0042] In the above technical solution, optionally, the thickness of the adjusting magnetic ring is B, where 0.5mm≤B≤3mm. When B is less than 0.5mm, the adjusting magnetic ring is too thin, its strength is too low, and it is prone to wobbling during operation, generating mechanical friction and noise when it comes into contact with the driven rotor and / or the driving rotor; when B is greater than 3mm, the adjusting magnetic ring has greater losses and occupies a larger air gap space between magnetic rings, reducing the magnetic transmission efficiency.

[0043] The thickness of the adjusting ring is generally its dimension in the direction perpendicular to the length of the adjusting teeth. For example, when the mounting ring and connecting ring are radially spaced, the thickness of the adjusting ring is its dimension in the axial direction of the mounting ring. When the mounting ring and connecting ring are axially spaced, the thickness of the adjusting ring is its radial dimension.

[0044] In the above technical solution, the magnetic isolation groove may optionally include at least one of rectangular, circular, elliptical, triangular, and polygonal shapes. The purpose of the magnetic isolation groove is to enable the effective magnetic conduction area of ​​the magnetic adjustment ring to reasonably transmit the magnetic circuit, reduce magnetic leakage, and improve magnetic transmission efficiency.

[0045] In the above technical solution, optionally, the adjusting magnetic ring is used in a counter-rotating motor. The counter-rotating motor includes two rotors, with the adjusting magnetic ring located between the two rotors. The two rotors are respectively located on both sides of the adjusting magnetic ring in the radial direction. The length of the driving rotor or driven rotor in the longitudinal direction is H, and the length of the adjusting magnetic ring in the longitudinal direction is J, where 1 ≤ J / H ≤ 1.5. When J / H is less than 1, the axial length of the adjusting magnetic ring is less than the axial length of the magnetic ring, resulting in more magnetic leakage and reduced magnetic transmission efficiency. When J / H is greater than 1.5, the axial length of the adjusting magnetic ring is too large, resulting in waste of adjusting magnetic ring material and occupation of axial space, causing an increase in the axial volume of the product.

[0046] In the above technical solution, optionally, the outer diameter of the rotor located inside the adjusting magnetic ring in the radial direction is D, and the inner diameter of the adjusting magnetic ring is V, where 0.2mm≤VD≤1.3mm. When VD is less than 0.2mm, the adjusting magnetic ring is prone to mechanical friction with the driven rotor and / or the driving rotor due to installation errors and structural misalignment. When VD is greater than 1.3mm, the air gap length between the magnetic ring and the adjusting magnetic ring is too large, resulting in excessive magnetic resistance and reduced magnetic transmission efficiency.

[0047] In the above technical solution, optionally, the inner diameter of the rotor located on the radially outer side of the adjusting magnetic ring is W, and the outer diameter of the adjusting magnetic ring is X, where 0.2mm ≤ WX ≤ 1.3mm. When WX is less than 0.2mm, the adjusting magnetic ring is prone to mechanical friction with the driven rotor and / or the driving rotor due to installation errors and structural misalignment. When WX is greater than 1.3mm, the air gap length between the magnetic ring and the adjusting magnetic ring is too large, resulting in excessive magnetic reluctance due to the low permeability of air, thus reducing the magnetic transmission efficiency.

[0048] In the above technical solution, optionally, the length of the adjusting magnetic ring along the length direction is J, and the length of the magnetic isolation hole along the length direction is K, where 1mm≤JK≤4mm. When JK is greater than 4mm, the axial length of the magnetic isolation groove is too small, which cannot play the role of isolating the magnetic circuit, and the excessively wide magnetic bridge causes increased magnetic leakage, reducing the magnetic transmission efficiency; when JK is less than 1mm, the width of the connection on both sides of the magnetic isolation groove along the axial direction is too small, the strength is insufficient and it is easy to deform, causing mechanical friction between the adjusting magnetic ring and the driving rotor and / or driven rotor, generating noise.

[0049] In the above technical solution, optionally, the circumferential angle corresponding to the magnetic isolation hole along the first circumferential direction is q, 100° / Q≤q≤260° / Q, where Q is the number of magnetic isolation holes. The maximum circumferential angle corresponding to the magnetic isolation hole is q, 100° / Q≤q≤260° / Q. When q is less than 100° / Q, the width of the magnetic isolation hole is too small, the magnetic isolation effect is poor, and the effect of the adjusting ring on the magnetic circuit is not obvious; when q is greater than 260° / Q, the width of the magnetic isolation hole is too large, resulting in the width of the adjusting teeth being too small, which easily causes magnetic saturation of the adjusting teeth, and reduces the magnetic adjustment effect and magnetic transmission efficiency; the length of the adjusting ring along the length direction is J, and the length of the adjusting teeth along the length direction is L; where 0.6≤L / J≤0.9.

[0050] In the above technical solution, optionally, when L / J is less than 0.6, the axial length of the adjusting tooth is too small, that is, the effective magnetic conduction area is too small, which easily causes magnetic saturation of the adjusting tooth and increases magnetic leakage, affecting the magnetic field modulation effect; when L / J is greater than 0.9, the axial length of the adjusting tooth is too large, the width of the magnetic isolation hole and the magnetic isolation bridge on both sides is too small, the magnetic isolation effect is poor, the magnetic leakage increases, affecting the magnetic transmission efficiency and the magnetic field modulation effect.

[0051] In the above technical solution, optionally, the adjusting magnetic ring is used in a counter-rotating motor. The counter-rotating motor includes two rotors, and the adjusting magnetic ring is located between the two rotors. The two rotors are located on both sides of the adjusting magnetic ring along the axial direction. Both the adjusting magnetic ring and the rotor are circular rings. The inner diameter of the adjusting magnetic ring is M, the outer diameter of the adjusting magnetic ring is O, the inner diameter of the rotor is E, and the outer diameter of the rotor is F, wherein 0.3≤M / E≤0.9, and / or 1≤O / F≤1.5.

[0052] When M / E is greater than 0.9, the inner diameter of the adjusting ring is close to the inner diameter of the rotor, resulting in more magnetic leakage and reducing magnetic transmission efficiency. When M / E is less than 0.3, the inner diameter of the adjusting ring is too small, resulting in waste of the magnetic conductive material. When O / F is less than 1, the outer diameter of the adjusting ring is smaller than the outer diameter of the rotor, resulting in more magnetic leakage and reducing magnetic transmission efficiency. When O / F is greater than 1.5, the outer diameter of the adjusting ring is too large, resulting in waste of material and occupying radial space.

[0053] In the above technical solution, optionally, the length of the magnetic isolation hole along the longitudinal direction is P, where 0.1mm ≤ (OM) / 2 - P ≤ 4mm. When (OM) / 2 - P is less than 0.1mm, the width and strength of the magnetic isolation bridge at the connection between the two sides of the magnetic isolation groove are too small, which can easily cause deformation of the magnetic ring structure and interference friction noise with the active rotor and / or driven rotor; when (OM) / 2 - P is greater than 4mm, the width of the magnetic isolation bridge is too large, which increases magnetic leakage and reduces magnetic transmission efficiency.

[0054] In the above technical solution, optionally, the circumferential angle corresponding to the magnetic isolation hole along the first circumferential direction is q, 30° / Q≤q≤300° / Q, where Q is the number of magnetic isolation holes.

[0055] In the above technical solution, optionally, the length of the adjusting tooth along the longitudinal direction is S, where 0.6≤S / (OM) / 2≤0.9mm. When S / (OM) / 2 is less than 0.6, the radial length of the adjusting tooth is too small, which can easily cause magnetic saturation of the adjusting tooth and affect the magnetic adjustment effect; when S / (OM) / 2 is greater than 0.9, the radial length of the magnetic isolation hole is too small, the magnetic isolation effect is poor, which can easily cause magnetic leakage and affect the magnetic transmission efficiency and the magnetic adjustment effect.

[0056] The second aspect of this utility model provides a magnetic gear, including the magnetic adjustment component provided in the first aspect; an active rotor and a driven rotor, the active rotor and the driven rotor being located on opposite sides of the magnetic adjustment ring, and the rotation directions of the active rotor and the driven rotor being opposite.

[0057] According to the magnetic gear provided in the second aspect of this utility model, the adjusting ring is disposed between the driving rotor and the driven rotor, and can adjust the magnetic circuits of the driving rotor and the driven rotor, so that when the driving rotor rotates, the driven rotor can rotate in the opposite direction. Furthermore, since the magnetic gear also includes the adjusting component provided in the first aspect of the technical solution, it also includes all the beneficial effects of the adjusting component provided in the first aspect of the technical solution, which will not be elaborated further here.

[0058] The driving rotor and the driven rotor can be located on opposite sides of the adjusting magnetic ring in a radial direction, thus forming a radial magnetic gear. Simultaneously, the driving rotor and the driven rotor can also be located on opposite sides of the adjusting magnetic ring in an axial direction, thus forming an axial magnetic gear.

[0059] In the above technical solution, optionally, the driven rotor and the driving rotor are located on both sides of the magnetic ring along the axial direction, wherein the inner diameter of the driven rotor and / or the driving rotor is E, and the outer diameter of the driven rotor and / or the driving rotor is F, where 0.4 ≤ E / F ≤ 0.7. When E / F is less than 0.4, the rotor inner hole is small and the radial thickness is large, resulting in a waste of permanent magnet material or magnetic conductive material. When E / F is greater than 0.7, the rotor radial thickness is thin, the structure is fragile, the processing is difficult, and the magnetic performance of the magnetic ring is low.

[0060] In the above technical solution, optionally, the distance between the adjusting magnetic ring and the driving rotor and / or driven rotor along the length direction is G, where 0.5mm≤G≤4mm. When G is less than 0.5mm, the rotor and adjusting magnetic ring are prone to interference friction due to installation errors and machining errors, causing noise; when G is greater than 4mm, it will lead to a significant reduction in magnetic transmission efficiency, thereby affecting the efficiency of magnetic transmission and causing the driven shaft to lose synchronization.

[0061] Specifically, when radial magnetization occurs, i.e., the driving rotor and driven rotor are arranged along the radial direction of the magnetizing ring, the distance G between the magnetizing ring and the driving rotor and / or driven rotor along the radial direction is greater than or equal to 0.5 mm and less than or equal to 4 mm. Similarly, when axial magnetization occurs, i.e., the driving rotor and driven rotor are arranged along the axial direction of the magnetizing ring, the distance G between the magnetizing ring and the driving rotor and / or driven rotor along the axial direction is greater than or equal to 0.5 mm and less than or equal to 4 mm.

[0062] In the above technical solution, optionally, the driven rotor and the driving rotor are located on both sides of the magnetic ring along the radial direction, wherein the ratio between the outer diameter of the driven rotor and / or the driving rotor and the axial height H is greater than or equal to 0.5 and less than or equal to 5.

[0063] In this technical solution, the magnetic rings of the driving and driven rotors are radially magnetized, and the magnetized surface of the rotor should be the radial curved surface of the annular magnetic ring, i.e., the rotor is a cylinder. The ratio between the outer diameter of the rotor and the height H of the rotor is greater than or equal to 0.5 and less than or equal to 5. When the volume of the magnetic rings of the driving and driven rotors is constant, when D / H is less than 0.5, the magnetic rings of the driving and driven rotors are elongated rod-shaped, which is difficult to process, makes the magnetic rings of the driving and driven rotors fragile, and reduces the magnetic performance due to the excessively small thickness of the magnetic rings. When D / H is greater than 5, the rotor is sheet-like, and the magnetized surface area of ​​the magnetic rings of the driving and driven rotors is too small, reducing the magnetic performance of the magnetic rings.

[0064] In the above technical solution, optionally, the inner diameter of the rotor located on the outer side of the adjusting magnetic ring in the radial direction is W, the outer diameter of the rotor located on the inner side of the adjusting magnetic ring in the radial direction is D, and the thickness of the adjusting magnetic ring is B, wherein 2mm ≤ ((WD) / 2) - B ≤ 8mm. When (WD) / 2 - B is less than 2mm, the rotor and the adjusting magnetic ring are prone to friction and noise due to assembly errors or runout; when (WD) / 2 - B is greater than 8mm, the magnetic resistance between the rotors is large, the transmission efficiency is low, and it can lead to loss of synchronization of the driven shaft.

[0065] The third aspect of this utility model provides a counter-rotating motor, including a drive motor and a first output shaft; and the second aspect provides a magnetic gear, with the active rotor mounted on the first output shaft.

[0066] The counter-rotating motor provided by the third aspect of this utility model includes a drive motor and the aforementioned magnetic gear. The magnetic gear includes a driving rotor, a driven rotor, and an adjusting ring. The adjusting ring is disposed between the driving rotor and the driven rotor, and can adjust the magnetic circuits of the driving rotor and the driven rotor. The driving rotor can rotate under the drive of the first output shaft, thereby driving the driven rotor to rotate in the opposite direction. Thus, a single-axis motor can output two different speeds or directions of rotation. Furthermore, this counter-rotating motor, due to the use of a magnetic gear, also has advantages such as no mechanical friction, low vibration, low noise, and overload protection.

[0067] Furthermore, since the counter-rotating motor also includes the magnetic gear provided by the second aspect of the technical solution, all the beneficial effects of the magnetic gear provided by the second aspect of the technical solution will not be elaborated here.

[0068] In the above technical solution, optionally, the second output shaft includes: a support sleeve, which is supported and mounted on the first output shaft and is rotatable relative to the first output shaft; a mounting part, which is connected to the support sleeve; at least a portion of the active rotor and the mounting part are respectively located on opposite sides of the adjusting ring; and the driven rotor is mounted on the mounting part at a position corresponding to the active rotor.

[0069] In this technical solution, the second output shaft comprises two parts. One part is a support sleeve, similar to a bushing, used to fit and mount onto the first output shaft. The other part is used to mount the driven rotor, allowing the driven rotor and the driving rotor to be positioned on opposite sides of the adjusting ring. The support sleeve and the mounting part are an integral structure, thus ensuring the strength of their connection.

[0070] Optionally, the support sleeve and the mounting part are integrally formed.

[0071] Furthermore, this structure ensures the concentricity of the first and second output shafts by supporting the second output shaft, thus improving the stability of the motor system and facilitating the installation of the second output shaft.

[0072] Optionally, in the above technical solution, the counter-rotating motor further includes: one or more bearings installed between the first output shaft and the support sleeve, wherein the support sleeve is rotatably mounted on the first output shaft via one or more bearings.

[0073] In this technical solution, the second output shaft has a hollow structure, which forms a rotating hole. One or more bearings are provided between the second output shaft and the first output shaft. These bearings allow the second output shaft to be mounted on the first output shaft, enabling the second output shaft to rotate relative to the first output shaft, thus achieving a rotatable mounting of the second output shaft on the first output shaft. Alternatively, the second output shaft can be mounted without support from the first output shaft, but to ensure coaxiality, at least a portion of the first output shaft can be inserted into the second output shaft.

[0074] Optionally, the number of bearings is two, and the two bearings are spaced apart along the axial direction of the first output shaft. This arrangement can improve the installation stability of the second output shaft and prevent the second output shaft from shaking.

[0075] Optionally, in any of the above technical solutions, the counter-rotating motor further includes: a motor bracket, on which the drive motor and the adjusting magnetic ring are mounted; the drive motor further includes a motor body, on which at least a portion of the first output shaft is mounted, and at least a portion of the first output shaft extends out from the motor body; wherein the motor body and the magnetic gear are located on the same side of the motor bracket, or the motor body and the magnetic gear are located on opposite sides of the motor bracket.

[0076] In this technical solution, the motor bracket forms a mounting platform for installing components such as the drive motor and the adjusting magnetic ring. The motor body and the magnetic gear can be mounted on the same side of the motor bracket. Alternatively, the motor body and the magnetic gear can be mounted on opposite sides of the motor bracket, thus simplifying the overall fan structure.

[0077] Meanwhile, in order to quickly determine the installation position of the adjusting magnetic ring on the motor bracket, a limiting structure can be set on the motor bracket. Through this limiting structure, the installation position of the adjusting magnetic ring can be more accurately limited, avoiding the effect of magnetic moment transmission between the driven rotor and the driving rotor due to improper installation of the adjusting magnetic ring. This improves the load capacity of the magnetic gear and reduces the risk of magnetic gear step loss.

[0078] The motor bracket and the mounting bracket are either an integrated structure or detachably connected.

[0079] The fourth aspect of this utility model provides a fan, including the counter-rotating motor provided in the third aspect.

[0080] The fan provided according to the fourth aspect of the present invention also includes the counter-rotating motor provided in the third aspect of the present invention. Therefore, the fan also includes all the beneficial effects of the counter-rotating motor provided in the third aspect of the present invention, which will not be repeated here.

[0081] In any of the above technical solutions, optionally, the driven rotor includes a second output shaft, and the fan further includes: a first fan blade connected to the first output shaft and capable of rotating with the first output shaft; and a second fan blade connected to the second output shaft and capable of rotating with the second output shaft.

[0082] In this technical solution, the fan also includes a first blade and a second blade. The first blade is mounted on a first output shaft and rotates in a first direction, while the second blade is connected to a second output shaft and can rotate in a second direction. That is, the two blades rotate in opposite directions. The two counter-rotating blades increase the airflow speed, thereby increasing the airflow distance, thus enabling the fan to deliver air over long distances.

[0083] Furthermore, since the first and second fan blades are respectively mounted on the first and second output shafts, it is possible to ensure that the first and second fan blades are concentrically set, thereby making the airflow generated by the two fan blades more stable, reducing eddies and lowering noise.

[0084] Additional aspects and advantages of this invention will become apparent in the description that follows, or may be learned by practice of this invention. Attached Figure Description

[0085] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0086] Figure 1 This is one of the structural schematic diagrams of a radially magnetized counter-rotating motor in an embodiment of this utility model;

[0087] Figure 2 This is the second schematic diagram of the radially magnetized counter-rotating motor in an embodiment of this utility model;

[0088] Figure 3 This is a schematic diagram of the radially magnetized adjusting ring in an embodiment of this utility model;

[0089] Figure 4 This is one of the structural schematic diagrams of the axially magnetized counter-rotating motor in the embodiments of this utility model;

[0090] Figure 5 This is the second schematic diagram of the axially magnetized counter-rotating motor in an embodiment of this utility model;

[0091] Figure 6 This is one of the structural schematic diagrams of the axially magnetized adjusting ring in the embodiments of this utility model;

[0092] Figure 7 This is the second schematic diagram of the axially magnetized adjusting ring in an embodiment of this utility model;

[0093] Figure 8 This is a schematic diagram of the radially magnetized active rotor in an embodiment of this utility model;

[0094] Figure 9 This is a schematic diagram of the axially magnetized active rotor in an embodiment of this utility model.

[0095] Figure 10 This is one of the structural schematic diagrams of the radially magnetized driven rotor in an embodiment of this utility model;

[0096] Figure 11 This is the second schematic diagram of the radially magnetized active rotor in an embodiment of this utility model;

[0097] Figure 12 This is a schematic diagram of the axially magnetized active rotor in an embodiment of this utility model.

[0098] Figure 13 This is one of the structural schematic diagrams of the magnetizing component in an embodiment of this utility model;

[0099] Figure 14 This is the second schematic diagram of the structure of the magnetic adjustment component in an embodiment of this utility model;

[0100] Figure 15 This is the third schematic diagram of the radially magnetized counter-rotating motor in the embodiments of this utility model;

[0101] Figure 16 This is a schematic diagram of the fan structure in an embodiment of this utility model.

[0102] in, Figures 1 to 16 The correspondence between the reference numerals and component names in the attached drawings is as follows:

[0103] 1. Magnetic ring, 11. Magnetic teeth, 12. Magnetic isolation hole, 13. Magnetic isolation groove, 132. Chamfer, 14. Mounting part, 142. Mounting ring, 15. Connecting ring, 2. Driving rotor, 3. Driven rotor, 4. Bearing, 5. Drive motor, 52. First output shaft, 6. Second output shaft, 62. Support sleeve, 64. Mounting part, 7. First fan blade, 8. Second fan blade, 9. Mounting bracket, 92. Limiting structure, 10. Motor bracket. Detailed Implementation

[0104] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0105] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0106] like Figures 1 to 16 As shown, an embodiment of the first aspect of this utility model provides a magnetic adjustment component, a magnetic gear, a counter-rotating motor, and a fan.

[0107] like Figure 3 , Figure 6 , Figure 7 as well as Figures 13 to 16 As shown, an embodiment of the first aspect of this utility model provides a magnetic adjustment assembly for a motor. The magnetic adjustment assembly includes: a mounting bracket 9; a magnetic adjustment ring 1, including a mounting member 14; and a plurality of magnetic adjustment teeth 11. The mounting member 14 is mounted on the mounting bracket 9, and the plurality of magnetic adjustment teeth 11 are aligned along a first circumferential direction (e.g., ...). Figure 3 and Figure 6 The magnetic teeth 11 are installed on the mounting component 14 at intervals in the Z direction, and a magnetic isolation hole 12 is formed between two adjacent magnetic adjustment teeth 11. One end of the multiple magnetic adjustment teeth 11 along the length direction is connected to the mounting component 14, and the other end of the multiple magnetic adjustment teeth 11 along the length direction is suspended. The mounting component 14 and the multiple magnetic adjustment teeth 11 are an integral structure.

[0108] The magnetic adjustment assembly provided according to an embodiment of this utility model is specifically used in a motor. The magnetic adjustment assembly includes a mounting bracket 9 and a magnetic adjustment ring 1. The mounting bracket 9 is used to mount the entire magnetic adjustment ring 1 on the motor. The magnetic adjustment ring 1 includes a mounting member 14 and multiple magnetic adjustment teeth 11. Magnetic isolation holes 12 are formed between the multiple magnetic adjustment teeth 11. The magnetic adjustment teeth 11 are magnetically conductive and can guide the magnetic circuit between the driven rotor 3 and the driving rotor 2, thereby enabling the driven rotor 3 and the driving rotor 2 to rotate in opposite directions. Furthermore, the mounting member 14 is located at one end of the multiple magnetic adjustment teeth 11 along the length direction; that is, the mounting member 14 only connects one end of the multiple magnetic adjustment teeth 11 along the length direction, meaning that most of the area along the length direction of the multiple magnetic adjustment teeth 11 is not connected. This creates a relatively large space for the magnetic isolation holes 12 between the multiple magnetic adjustment teeth 11, effectively preventing magnetic leakage and improving the magnetic moment transmission effect between the driven rotor 3 and the driving rotor 2. In this way, when the adjusting magnetic ring 1 is used for the magnetic gear, the load capacity of the magnetic gear can be improved and the risk of the magnetic gear losing step can be reduced.

[0109] Meanwhile, in this structure, one end of the magnetic adjusting ring 1 is mounted on the mounting bracket 9, while the other end is suspended, which facilitates the connection between the magnetic adjusting ring 1 and the driving rotor 2 and driven rotor 3 of the motor. Furthermore, since the magnetic adjusting assembly has its own mounting bracket 9, this structure allows for quick and easy installation of the magnetic adjusting assembly on the motor.

[0110] The mounting component 14 and the multiple magnetic adjustment teeth 11 are integrally formed. Furthermore, the mounting component 14 and the multiple magnetic adjustment teeth 11 are integrally molded; for example, a portion of the material can be removed from a ring-shaped component along the circumferential direction to form a structure including the mounting component 14, the multiple magnetic adjustment teeth 11, and the multiple magnetic isolation holes 12. Alternatively, the mounting component 14 and the multiple magnetic adjustment teeth 11 can also be welded together to form an integral structure.

[0111] Of course, in other solutions, the mounting 14 and the multiple adjusting teeth 11 can also be two independent, detachable parts.

[0112] In any of the above embodiments, optionally, as Figures 1 to 3 as well as Figure 13 , Figure 15 As shown, the mounting component 14 includes a mounting ring 142, and a plurality of magnetic adjustment teeth 11 are arranged along the axial direction of the mounting ring 142. The mounting bracket 9 includes a mounting plate, and a limiting structure 92 is provided on the mounting plate. The end of the magnetic adjustment ring 1 near the mounting ring 142 is mounted on the mounting plate and limited by the limiting structure 92.

[0113] In this embodiment, the mounting component 14 includes a mounting ring 142, and a plurality of adjusting teeth 11 are mounted along the axial direction of the mounting ring 142. The mounting bracket 9 can be configured as a plate-like structure, and one end of the adjusting ring 1 is mounted on one side of the plate-like structure. Simultaneously, to quickly determine the mounting position of the adjusting ring 1 on the mounting bracket 9, a limiting structure 92 can be provided on the mounting plate. This limiting structure 92 can more accurately define the mounting position of the adjusting ring 1, preventing improper installation of the adjusting ring 1 from affecting the magnetic moment transmission between the driven rotor 3 and the driving rotor 2.

[0114] In any of the above embodiments, optionally, as Figures 4 to 7 as well as Figure 14 As shown, the mounting component 14 includes a mounting ring 142, and a plurality of magnetic adjustment teeth 11 are arranged radially on the inner side of the mounting ring 142; the mounting bracket 9 includes a mounting sleeve, and the magnetic adjustment ring 1 is mounted on the inner side of the mounting sleeve.

[0115] In this embodiment, the mounting component 14 includes a mounting ring 142, and a plurality of adjusting teeth 11 are mounted radially along the mounting ring 142. The mounting bracket 9 can be configured as a sleeve, and the outer end of the adjusting ring 1 is then mounted on the inner side of the mounting sleeve. Simultaneously, to quickly determine the mounting position of the adjusting ring 1 on the mounting sleeve, a limiting structure 92 can be provided on the mounting plate. This limiting structure 92 can more accurately define the mounting position of the adjusting ring 1, preventing improper installation of the adjusting ring 1 from affecting the magnetic moment transmission between the driven rotor 3 and the driving rotor 2.

[0116] Optionally, a plurality of adjusting teeth 11 are mounted on the mounting member 14 at equal intervals along a first circumferential direction. The width of the plurality of adjusting teeth 11 along the first circumferential direction is equal. Optionally, the plurality of adjusting teeth 11 have the same shape and size.

[0117] In the above embodiments, optionally, as shown... Figure 3 , Figure 6 and Figure 7 As shown, magnetic isolation grooves 13 are provided on one or both ends of the magnetic adjustment tooth 11 along its length.

[0118] In this embodiment, by providing the magnetic isolation groove 13, the magnetic leakage at both ends of the adjusting gear 11 arranged radially can be reduced, thereby further improving the magnetic moment transmission effect between the driven rotor 3 and the driving rotor 2. Therefore, when the adjusting ring 1 is used for the magnetic gear, the load capacity of the magnetic gear can be further improved, and the risk of the magnetic gear losing synchronization can be reduced.

[0119] In the above embodiments, optionally, as shown... Figure 3 , Figure 6 and Figure 7 As shown, the magnetic adjustment tooth 11 includes two ends arranged along the length direction, and the magnetic isolation groove 13 is provided with a chamfer 132, which is provided on the side of the magnetic isolation groove 13 near the end.

[0120] In this embodiment, since the magnetic isolation groove 13 is located relatively close to the end, the structural strength of the magnetic adjustment ring 1 at the end is relatively weak. Therefore, in order to increase the wall thickness of the magnetic adjustment tooth 11 at the end, a chamfer 132 can be provided at the connection of the two sides of the magnetic isolation groove 13 near the end. This can appropriately increase the thickness of the magnetic isolation groove 13 near the end, thereby improving the structural strength of the magnetic adjustment ring 1.

[0121] Furthermore, the magnetic shielding groove 13 is provided with a chamfer 132 at one or both ends along the first circumferential direction. That is, the magnetic shielding groove 13 can be provided with only one chamfer 132 on the side near the end for single-sided structural reinforcement, or two chamfers 132 can be provided for double-sided structural reinforcement.

[0122] In the above embodiments, optionally, the magnetic ring 1 further includes a reinforcing structure, which is disposed on one side of the magnetic isolation groove 13 near the end. The magnetic isolation groove 13 is provided with a reinforcing structure at one or both ends distributed along the first circumferential direction.

[0123] In this embodiment, a reinforcing structure can be provided near the magnetic isolation groove 13 to increase the structural strength of the magnetic guide teeth. Specifically, a reinforcing structure can be provided at each of the left and right ends of the magnetic isolation groove 13 near its end to enhance the overall structural strength of the magnetic adjustment ring 1.

[0124] In one specific design, a chamfer 132 and a reinforcement are provided at the magnetic isolation groove 13, so that the structural strength of the magnetic ring 1 can be doubled through the chamfer 132 and the reinforcement structure.

[0125] In the above embodiment, optionally, the diameter of the chamfer 132 is v, where 0.3mm ≤ v ≤ 2mm. When v is less than 0.3mm, the area of ​​the chamfer 132 is small and cannot reinforce the magnetic bridge; when v is greater than 2mm, the area of ​​the chamfer 132 is large, resulting in greater magnetic leakage at the magnetic bridge and reducing the magnetic transmission efficiency.

[0126] In the above embodiments, optionally, as shown... Figure 3 , Figure 6 and Figure 7 As shown, the mounting component 14 includes a mounting ring 142. The structure of the mounting ring 142 is simpler, and since the middle of the mounting ring 142 is hollow, magnetic field leakage through the mounting component 14 can be further prevented.

[0127] In the above embodiments, optionally, as shown... Figure 3 , Figure 6 and Figure 7 As shown, the magnetic adjustment ring 1 also includes a connecting ring 15, which is connected to the end of the plurality of magnetic adjustment teeth 11 away from the mounting member 14, and the connecting ring 15 and the mounting ring 142 are spaced apart along the length direction.

[0128] In this embodiment, the two ends of the plurality of adjusting teeth 11 along the length direction are connected by mounting rings 142 and connecting rings 15, respectively, which ensures the strength of the adjusting ring 1 and prevents the adjusting teeth 11 from deforming during operation. At the same time, this structure, through mounting rings 142 and connecting rings 15, also makes the structure of the adjusting ring 1 relatively simple, and at the same time, it can improve the magnetic shielding effect of the adjusting ring 1 and prevent magnetic leakage based on the mounting structure at both ends of the adjusting ring 1.

[0129] Among them, the connecting ring 15, the mounting ring 142 and the adjusting teeth 11 are integral structures or integral molded structures, which facilitates the processing of the adjusting ring 1 and also makes the entire adjusting ring 1 have a better magnetic shielding effect.

[0130] Optionally, such as Figure 3 As shown, multiple adjusting teeth 11 are arranged along the axial direction of the mounting ring 142, and the mounting ring 142 and the connecting ring 15 are spaced apart along the axial direction of the mounting ring 142, or as shown... Figure 6 As shown, multiple magnetic adjustment teeth 11 are arranged radially on the inner side of the mounting ring 142, and the mounting ring 142 and the connecting ring 15 are arranged at intervals radially along the mounting ring 142.

[0131] The mounting ring 142 and the connecting ring 15 can be spaced apart radially to form one type of magnetizing structure. Alternatively, they can be spaced apart axially to form another type of magnetizing structure. This allows for greater variety in the shape of the magnetizing structure. During manufacturing, the shape of the magnetizing structure can be appropriately set according to the actual conditions of the motor.

[0132] In the above embodiments, optionally, as shown... Figure 3 and Figure 13 As shown, multiple adjusting teeth 11 are arranged along the axial direction of the mounting ring 142. The mounting ring 142 and the connecting ring 15 are spaced apart along the axial direction of the mounting ring 142. The inner diameter of the mounting ring 142 is Z, the inner diameter of the adjusting ring 1 is V, Z = V, and / or, the outer diameter of the mounting ring 142 is Y, the outer diameter of the adjusting ring 1 is X, 6mm ≤ YX ≤ 20mm, and / or, the thickness of the mounting ring 142 is h1, 0.5mm ≤ h1 ≤ 3mm; and / or, the outer diameter of the connecting ring 15 is A, the outer diameter of the adjusting ring 1 is X, A = X, and / or, the inner diameter of the connecting ring 15 is C, the inner diameter of the adjusting ring 1 is V, 1mm ≤ VC ≤ 6mm, and / or, the thickness of the connecting ring 15 is h2, 0.5mm ≤ h2 ≤ 3mm.

[0133] In this embodiment, when YX is less than 6mm, the width of the mounting ring 142 is too small, and its reinforcing effect is minimal, failing to stably connect the magnetic adjusting ring 1 to the mounting plate of the mounting bracket 9. When YX is greater than 20mm, it occupies too much radial space, resulting in wasted space. When h1 is less than 0.5mm, the strength of the mounting ring 142 is low, easily causing deformation and swaying. When h1 is greater than 3mm, it results in wasted axial space. When VC is less than 1mm, the width of the connecting ring 15 is too small, failing to provide reinforcement. When VC is greater than 6mm, the width of the connecting ring 15 is too large, easily increasing magnetic leakage and reducing magnetic transmission efficiency. When h2 is less than 0.5mm, the structural strength of the connecting ring 15 is low, and the magnetic adjusting ring 1 is prone to deformation and swaying, causing mechanical friction; when h2 is greater than 3mm, increased magnetic leakage results in low magnetic transmission efficiency and wastes axial space.

[0134] In the above embodiments, optionally, the connecting ring 15 and the plurality of adjusting teeth 11 are connected by welding or by adhesive. That is, the connecting ring 15 and the plurality of adjusting teeth 11 are separately machined parts, and the two are connected later.

[0135] In the above embodiments, the adjusting magnetic ring 1 may optionally be a metal magnetic ring or a non-metal magnetic ring. This application does not specifically limit the material of the adjusting magnetic ring 1, as long as it is magnetically conductive. Therefore, the adjusting magnetic ring 1 can be set as a metal magnetic ring or a non-metal magnetic ring according to actual conditions.

[0136] In the above embodiments, optionally, the magnetic ring 1 further includes a filler disposed in the magnetic isolation hole 12, the filler being a non-magnetic material.

[0137] In this embodiment, a filler with a better magnetic shielding effect than air can be added to the magnetic shielding hole 12 to enhance the magnetic shielding effect of the magnetic adjusting ring 1. Of course, no material can be placed in the magnetic shielding hole 12, in which case magnetic shielding can be achieved by air.

[0138] In the above embodiments, optionally, the mounting member 14 is circular, and a plurality of magnetic adjustment teeth 11 are arranged radially on the inner side of the mounting member 14. When the mounting member 14 and the connecting ring 15 are arranged at intervals radially on the mounting member 14, the length direction of the plurality of magnetic adjustment teeth 11 is the radial direction of the mounting member 14. When the plurality of magnetic adjustment teeth 11 are arranged axially on the mounting member 14, and the mounting member 14 and the connecting ring 15 are arranged at intervals axially on the mounting member 14, the length direction of the plurality of magnetic adjustment teeth 11 is the axial direction of the mounting member 14.

[0139] In the above embodiments, optionally, the adjusting magnetic ring 1 is used for a counter-rotating motor, which includes a driving rotor 2 and a driven rotor 3. The adjusting magnetic ring 1 is located between the driving rotor 2 and the driven rotor 3. The number of magnetic isolation holes 12 is Q, where Q = (P1 + P2) / 2, where P1 is the number of poles of the driving rotor 2 and P2 is the number of poles of the driven rotor 3.

[0140] In the above embodiments, optionally, the adjusting ring 1 is a soft magnetic adjusting ring, that is, an adjusting ring 1 made of soft magnetic material. The soft magnetic material is a magnetic material with low coercivity and high permeability. Soft magnetic materials are easy to magnetize and demagnetize, and have a narrow and steep hysteresis loop, a nearly reversible magnetization process, low hysteresis loss, high permeability, and low coercivity.

[0141] In the above embodiments, optionally, as shown... Figure 3 , Figure 6 and Figure 7 As shown, the thickness of the adjusting magnetic ring 1 is B, where 0.5mm ≤ B ≤ 3mm. When B is less than 0.5mm, the adjusting magnetic ring 1 is too thin, its strength is too low, and it is prone to wobbling during operation, causing mechanical friction and noise when it comes into contact with the driving rotor and / or driven rotor; when B is greater than 3mm, the adjusting magnetic ring 1 has greater losses and occupies a larger air gap space between magnetic rings, reducing the magnetic transmission efficiency.

[0142] The thickness of the adjusting ring 1 is generally the dimension of the adjusting ring 1 in the direction perpendicular to the length of the adjusting tooth 11. For example, as... Figure 7 As shown, when the mounting ring 142 and the connecting ring 15 are arranged radially at intervals, the thickness B of the adjusting ring 1 is a dimension along the axial direction of the mounting ring 142. Figure 13As shown, when the mounting ring 142 and the connecting ring 15 are spaced apart along the axial direction, the thickness B of the adjusting ring 1 (specifically...) Figure 1 The thickness between the outer diameter and the inner diameter of the adjusting magnetic ring 1 is the radial dimension along the mounting ring 142.

[0143] In the above embodiments, the magnetic isolation groove 13 may optionally include at least one of rectangular, circular, elliptical, triangular, and polygonal shapes. The purpose of the magnetic isolation groove 13 is to enable the effective magnetic conduction area of ​​the magnetic adjustment ring 1 to reasonably transmit the magnetic circuit, reduce magnetic leakage, and improve magnetic transmission efficiency.

[0144] In the above embodiments, optionally, as shown... Figure 1 and Figure 2 As shown, mounting component 14 and connecting ring 15 are spaced apart along the axial direction of mounting component 14. Adjusting magnetic ring 1 is used for a counter-rotating motor, which includes two rotors. The adjusting magnetic ring 1 is located between the two rotors, with the two rotors positioned on opposite sides of the adjusting magnetic ring 1 in the radial direction. The length of the driving rotor 2 or driven rotor 3 in the longitudinal direction is H (specifically...). Figure 1 In the figure, the length of the driving rotor 2 or the driven rotor 3 along the axial direction of the first output shaft 52 is J, and the length of the adjusting magnetic ring 1 along the length direction is J (e.g., Figure 3 As shown), 1≤J / H≤1.5. When J / H is less than 1, the axial length of the adjusting ring 1 is less than the axial length of the driving rotor 2 or the driven rotor 3, resulting in more magnetic leakage and reducing the magnetic transmission efficiency; when J / H is greater than 1.5, the axial length of the adjusting ring 1 is too large, resulting in waste of the material of the adjusting ring 1 and occupying axial space, resulting in an increase in the axial volume of the product.

[0145] In the above embodiments, optionally, as shown... Figure 1 , Figure 2 and Figure 3 As shown, the mounting component 14 and the connecting ring 15 are spaced apart along the axial direction of the mounting component 14. The outer diameter of the rotor located inside the magnetic adjusting ring 1 in the radial direction is D (specifically, it can be D). Figure 1 The outer ring length of the active rotor 2 along the radial direction of the first output shaft 52), and the inner diameter of the adjusting magnetic ring 1 is V (e.g., Figure 3 As shown), 0.2mm≤VD≤1.3mm. When VD is less than 0.2mm, the adjusting magnetic ring 1 is prone to mechanical friction with the driving rotor and / or driven rotor due to installation errors and structural sway. When VD is greater than 1.3mm, the air gap length between the magnetic ring and the adjusting magnetic ring 1 is too large, the magnetic resistance is too large, and the magnetic transmission efficiency is reduced.

[0146] In the above embodiments, optionally, as shown... Figure 1 and Figure 3 As shown, the outer diameter of the rotor located on the radial side of the adjusting ring 1 (specifically, it can be...) Figure 1The outer ring length of the driven rotor 3 along the radial direction of the first output shaft 52 is W, and the outer diameter of the adjusting magnetic ring 1 (specifically can be W) is W. Figure 1 The outer ring dimension (WX) of the adjusting magnetic ring 1 along the radial direction of the first output shaft 52 is X, where 0.2mm ≤ WX ≤ 1.3mm. When WX is less than 0.2mm, the adjusting magnetic ring 1 is prone to mechanical friction with the driving rotor and / or driven rotor due to installation errors and structural misalignment. When WX is greater than 1.3mm, the air gap length between the magnetic ring and the adjusting magnetic ring 1 is too large. Due to the low permeability of air, the magnetic reluctance is too high, reducing the magnetic transmission efficiency.

[0147] In the above embodiments, optionally, as shown... Figure 3 As shown, the length of the adjusting magnetic ring 1 along the length direction is J (e.g., Figure 3 As shown), the length of the magnetic shielding hole 12 along the longitudinal direction is K (as shown). Figure 3 As shown), 1mm≤JK≤4mm. When JK is greater than 4mm, the axial length of the magnetic isolation groove 13 is too small, which cannot play the role of isolating the magnetic circuit, and the excessively wide magnetic bridge causes an increase in magnetic leakage, reducing the magnetic transmission efficiency; when JK is less than 1mm, the width of the connection between the two sides of the magnetic isolation groove 13 is too small, and the strength is insufficient and it is easy to deform, causing mechanical friction between the magnetic adjustment ring 1 and the active rotor and / or driven rotor, generating noise.

[0148] In the above embodiments, optionally, as shown... Figure 3 As shown, the circumferential angle corresponding to the magnetic isolation hole 12 along the first circumferential direction is q, 100° / Q≤q≤260° / Q, where Q is the number of magnetic isolation holes 12. The maximum circumferential angle corresponding to the magnetic isolation hole 12 is q, 100° / Q≤q≤260° / Q. When q is less than 100° / Q, the width of the magnetic isolation hole 12 is too small, the magnetic isolation effect is poor, and the effect of the adjusting ring 1 on the magnetic circuit is not obvious; when q is greater than 260° / Q, the width of the magnetic isolation hole 12 is too large, causing the width of the adjusting tooth 11 to be too small, which easily leads to magnetic saturation of the adjusting tooth 11, and a decrease in the magnetic adjustment effect and magnetic transmission efficiency; the length of the adjusting ring 1 along the length direction is J (e.g., Figure 3 As shown), the length of the adjusting magnetic tooth 11 along the length direction is L (as shown). Figure 3 (as shown); where 0.6≤L / J≤0.9. When L / J is less than 0.6, the axial length of the adjusting tooth 11 is too small, that is, the effective magnetic conduction area is too small, which easily causes magnetic saturation of the adjusting tooth 11 and increases magnetic leakage, affecting the magnetic field modulation effect; when L / J is greater than 0.9, the axial length of the adjusting tooth 11 is too large, the width of the magnetic isolation hole 12 and the magnetic isolation bridges on both sides is too small, the magnetic isolation effect is poor, the magnetic leakage increases, affecting the magnetic transmission efficiency and the magnetic field modulation effect.

[0149] In the above embodiments, optionally, as shown... Figure 4 , Figure 5 and Figure 6As shown, multiple adjusting teeth 11 are arranged radially along the inner side of the mounting member 14. The mounting member 14 and the connecting ring 15 are arranged radially spaced along the mounting member 14. The adjusting ring 1 is used for a counter-rotating motor, which includes two rotors. The adjusting ring 1 is located between the two rotors, and the two rotors are located on both sides of the adjusting ring 1 along the axial direction. Both the adjusting ring 1 and the rotors are annular. The inner diameter of the adjusting ring 1 is M, the outer diameter of the adjusting ring 1 is O, and the inner diameter of the rotor is E (e.g., ...). Figure 4 As shown), the outer diameter of the rotor is F (as shown). Figure 4 As shown), where 0.3≤M / E≤0.9, and / or 1≤O / F≤1.5.

[0150] When M / E is greater than 0.9, the inner diameter of the adjusting magnetic ring 1 is close to the inner diameter of the rotor, resulting in more magnetic leakage and reducing magnetic transmission efficiency. When M / E is less than 0.3, the inner diameter of the adjusting magnetic ring 1 is too small, resulting in waste of the magnetic conductive material of the adjusting magnetic ring 1. When O / F is less than 1, the outer diameter of the adjusting magnetic ring 1 is smaller than the outer diameter of the rotor, resulting in more magnetic leakage and reducing magnetic transmission efficiency. When O / F is greater than 1.5, the outer diameter of the adjusting magnetic ring 1 is too large, resulting in waste of material and occupying radial space.

[0151] Among them, such as Figure 4 As shown, the inner diameter of the driven rotor 3 is E1, and the outer diameter is F1, as follows: Figure 4 As shown, the inner diameter of the active rotor 2 is E2, and the outer diameter is F2.

[0152] In the above embodiments, optionally, as shown... Figure 6 and Figure 7 As shown, the length of the magnetic isolation hole 12 along the longitudinal direction is P, where 0.1mm ≤ (OM) / 2 - P ≤ 4mm. When (OM) / 2 - P is less than 0.1mm, the width and strength of the magnetic isolation bridge at the connection between the two sides of the magnetic isolation groove 13 are too small, which can easily cause deformation of the magnetic adjustment ring 1 structure and interference friction noise with the active rotor and / or driven rotor; when (OM) / 2 - P is greater than 4mm, the width of the magnetic isolation bridge is too large, which increases magnetic leakage and reduces magnetic transmission efficiency.

[0153] In the above embodiment, optionally, the circumferential angle corresponding to the magnetic isolation hole 12 along the first circumferential direction is q, 30° / Q≤q≤300° / Q, where Q is the number of magnetic isolation holes 12.

[0154] In the above embodiments, optionally, as shown... Figure 6 and Figure 7As shown, the length of the adjusting tooth 11 along the longitudinal direction is S, where 0.6 ≤ S / (OM) / 2 ≤ 0.9. When S / (OM) / 2 is less than 0.6, the radial length of the adjusting tooth 11 is too small, which can easily cause magnetic saturation of the adjusting tooth 11 and affect the magnetic adjustment effect; when S / (OM) / 2 is greater than 0.9, the radial length of the magnetic isolation hole 12 is too small, the magnetic isolation effect is poor, which can easily cause magnetic leakage and affect the magnetic transmission efficiency and the magnetic adjustment effect.

[0155] A second aspect of this utility model provides a magnetic gear, including the magnetic adjustment assembly provided in the first aspect; an active rotor 2 and a driven rotor 3, the active rotor 2 and the driven rotor 3 being located on opposite sides of the magnetic adjustment ring 1, and the active rotor 2 and the driven rotor 3 rotating in opposite directions.

[0156] like Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, in the magnetic gear provided according to the second aspect of this utility model, the adjusting ring 1 is disposed between the driving rotor 2 and the driven rotor 3, and can adjust the magnetic circuits of the driving rotor 2 and the driven rotor 3, so that when the driving rotor 2 rotates, the driven rotor 3 can rotate in the opposite direction. Meanwhile, since the magnetic gear also includes the adjusting component provided in the first aspect, it also includes all the beneficial effects of the adjusting component provided in the first aspect, which will not be elaborated further here.

[0157] Among them, such as Figure 1 and Figure 2 As shown, the driving rotor 2 and the driven rotor 3 can be located on opposite sides of the adjusting magnetic ring 1 in a radially opposing manner, thus forming a radial magnetic gear. Meanwhile, as... Figure 4 and Figure 5 As shown, the driving rotor 2 and the driven rotor 3 can also be located on opposite sides of the magnetic ring 1 in the axial direction, thus forming an axial magnetic gear.

[0158] In the above embodiments, optionally, as shown... Figure 4 and Figure 5 As shown, the driven rotor 3 and the driving rotor 2 are located on both sides of the adjusting ring 1 along the axial direction. Wherein, as... Figure 9 and Figure 12 As shown, the inner diameter of the driven rotor 3 and / or the driving rotor 2 is E, and the outer diameter of the driven rotor 3 and / or the driving rotor 2 is F, where 0.4 ≤ E / F ≤ 0.7. When E / F is less than 0.4, the rotor inner hole is small and the radial thickness is large, resulting in a waste of permanent magnet material or magnetic conductive material. When E / F is greater than 0.7, the rotor radial thickness is thin, the structure is fragile, the processing is more difficult, and the magnetic properties of the magnetic ring are lower.

[0159] Among them, such as Figure 4As shown, the inner diameter of the driven rotor 3 is E1, and the outer diameter is F1, as follows: Figure 4 As shown, the inner diameter of the active rotor 2 is E2, and the outer diameter is F2.

[0160] In the above embodiments, optionally, the distance between the adjusting magnetic ring 1 and the driving rotor 2 and / or the driven rotor 3 along the length direction is G, where 0.5mm≤G≤4mm. When G is less than 0.5mm, the rotor and the adjusting magnetic ring 1 are prone to interference friction due to installation errors and machining errors, causing noise; when G is greater than 4mm, it will lead to a significant reduction in magnetic transmission efficiency, thereby affecting the efficiency of magnetic transmission and causing the driven shaft to lose synchronization.

[0161] Wherein, when radial magnetization occurs, i.e., the driving rotor 2 and the driven rotor 3 are arranged along the radial direction of the adjusting ring 1, the distance G between the adjusting ring 1 and the driving rotor 2 and / or the driven rotor 3 along the radial direction (this dimension can be specifically defined as follows) Figure 4 In the middle, the adjusting magnetic ring 1 is aligned with the driving rotor 2 and / or the driven rotor 3 along... Figure 4 The axial spacing shown is greater than or equal to 0.5 mm and less than or equal to 4 mm. Specifically, when axially magnetized, i.e., when the driving rotor 2 and driven rotor 3 are arranged along the axial direction of the adjusting ring 1, the distance G between the adjusting ring 1 and the driving rotor 2 and / or driven rotor 3 along the axial direction (this dimension can be specifically defined as...) Figure 4 In the middle, the adjusting magnetic ring 1 is aligned with the driving rotor 2 and / or the driven rotor 3 along... Figure 4 The axial spacing shown is greater than or equal to 0.5 mm and less than or equal to 4 mm.

[0162] In the above embodiments, optionally, as shown... Figure 1 and Figure 2 As shown, the driven rotor 3 and the driving rotor 2 are located on both sides of the adjusting ring 1 along the radial direction. The ratio between the outer diameter of the driven rotor 3 and / or the driving rotor 2 and its axial height H is greater than or equal to 0.5 and less than or equal to 5. Specifically, the axial height of the driving rotor 2 is H2 (e.g., ...). Figure 1 As shown), the axial height of the driven rotor 3 is H1 (as shown). Figure 1 (As shown).

[0163] In this embodiment, the magnetic rings of the driving rotor 2 and the driven rotor 3 are radially magnetized. The magnetized surface of the rotor should be the radial curved surface of the annular magnetic ring, i.e., the rotor is a cylinder. The ratio between the outer diameter of the rotor and the height H of the rotor is greater than or equal to 0.5 and less than or equal to 5. When the volume of the magnetic rings of the driving rotor 2 and the driven rotor 3 is constant, when D / H is less than 0.5, the magnetic rings of the driving rotor 2 and the driven rotor 3 are elongated rods, which are difficult to process, easily breakable, and have too small a thickness, resulting in reduced magnetic performance. When D / H is greater than 5, the driving rotor 2 and the driven rotor 3 are sheet-like, and the magnetized surface area of ​​the magnetic rings of the driving rotor 2 and the driven rotor 3 is too small, reducing the magnetic performance of the magnetic rings.

[0164] In the above embodiments, optionally, as shown... Figure 8 , Figure 10 and Figure 11 As shown, the inner diameter of the rotor (i.e., the driven rotor 3) located on the outer side of the adjusting magnetic ring 1 in the radial direction is W, the outer diameter of the rotor (i.e., the driving rotor 2) located on the inner side of the adjusting magnetic ring 1 in the radial direction is D, and the thickness of the adjusting magnetic ring 1 is B, where 2mm ≤ ((WD) / 2) - B ≤ 8mm. When (WD) / 2 - B is less than 2mm, the rotor and the adjusting magnetic ring 1 are prone to friction and noise due to assembly errors or runout; when (WD) / 2 - B is greater than 8mm, the magnetic resistance between the rotors is large, the transmission efficiency is low, and it can lead to loss of synchronization of the driven shaft.

[0165] like Figure 1 , Figure 2 , Figure 4 and Figure 5 as well as Figure 15 As shown, an embodiment of the third aspect of this utility model provides a counter-rotating motor, including a drive motor 5 and a first output shaft 52; and a magnetic gear provided in the embodiment of the second aspect, with the active rotor 2 mounted on the first output shaft 52.

[0166] According to an embodiment of the third aspect of this utility model, a counter-rotating motor includes a drive motor 5 and the aforementioned magnetic gear. The magnetic gear includes a driving rotor 2, a driven rotor 3, and an adjusting ring 1. The adjusting ring 1 is disposed between the driving rotor 2 and the driven rotor 3, and can adjust the magnetic circuits of the driving rotor 2 and the driven rotor 3. The driving rotor 2 can rotate under the drive of the first output shaft 52, thereby driving the driven rotor 3 to rotate in the opposite direction. Thus, a single-axis motor can output two different speeds or directions of rotation. Furthermore, this counter-rotating motor, due to the use of a magnetic gear, also has advantages such as no mechanical friction, low vibration, low noise, and overload protection.

[0167] Furthermore, since the counter-rotating motor also includes the magnetic gear provided in the second aspect embodiment, all the beneficial effects of the magnetic gear provided in the second aspect embodiment are not elaborated here.

[0168] In any of the above embodiments, optionally, as Figure 11 , Figure 12 , Figure 13 , Figure 14 and Figure 15 As shown, the counter-rotating motor also includes: a mounting bracket 9, on which the drive motor 5 and the adjusting magnetic ring 1 are both mounted; the drive motor 5 also includes a motor body, at least a portion of the first output shaft 52 is mounted in the motor body, and at least a portion of the first output shaft 52 extends out from the motor body; wherein, the motor body and the magnetic gear are located on the same side of the mounting bracket 9, or the motor body and the magnetic gear are located on opposite sides of the mounting bracket 9.

[0169] In this embodiment, the mounting bracket 9 forms a mounting platform for mounting components such as the drive motor 5 and the adjusting magnetic ring 1. The motor body and the magnetic gear can be mounted on the same side of the mounting bracket 9. Alternatively, the motor body and the magnetic gear can be mounted on opposite sides of the mounting bracket 9, thus simplifying the overall fan structure.

[0170] Meanwhile, in order to quickly determine the installation position of the adjusting magnetic ring 1 on the mounting bracket 9, a limiting structure 92 can be set on the motor bracket 10. Through this limiting structure 92, the installation position of the adjusting magnetic ring 1 can be more accurately limited, avoiding the effect of magnetic moment transmission between the driven rotor 3 and the driving rotor 2 due to improper installation of the adjusting magnetic ring 1. This improves the load capacity of the magnetic gear and reduces the risk of magnetic gear step loss.

[0171] The motor bracket 10 and the mounting bracket 9 are either an integral structure or detachably connected.

[0172] In the above embodiments, optionally, as shown... Figure 1 , Figure 2 and Figure 15 As shown, the driven rotor 3 includes a second output shaft 6, which includes a support sleeve 62, which is supported and mounted on the first output shaft 52 and is rotatable relative to the first output shaft 52; and a mounting part 64, which is connected to the support sleeve 62. At least a portion of the driving rotor 2 and the mounting part 64 are respectively located on opposite sides of the adjusting ring 1. The driven rotor 3 is mounted on the mounting part 64 at a position corresponding to the driving rotor 2.

[0173] In this embodiment, the second output shaft 6 comprises two parts. One part is a support sleeve 62, which is similar to a bushing and is used to fit and mount on the first output shaft 52. The other part is used to mount the driven rotor 3, so that the driven rotor 3 and the driving rotor 2 can be arranged on opposite sides of the adjusting ring 1. The support sleeve 62 and the mounting part 64 are integral structures to ensure the connection strength between the two.

[0174] Optionally, the support sleeve 62 and the mounting part 64 are integrally formed.

[0175] Furthermore, this structure ensures the concentricity of the first output shaft 52 and the second output shaft 6 by supporting the second output shaft 52, thereby improving the stability of the motor system and facilitating the installation of the second output shaft 6.

[0176] In the above embodiments, optionally, as shown... Figure 1 , Figure 2 and Figure 15 As shown, the counter-rotating motor also includes one or more bearings 4, which are installed between the first output shaft 52 and the support sleeve 62. The support sleeve 62 is rotatably mounted on the first output shaft 52 via one or more bearings 4.

[0177] In this embodiment, the interior of the second output shaft 6 is hollow, forming a rotation hole. One or more bearings 4 are provided between the second output shaft 6 and the first output shaft 52. These bearings 4 allow the second output shaft 6 to be mounted on the first output shaft 52, enabling the second output shaft 6 to rotate relative to the first output shaft 52, thus achieving a rotatable mounting of the second output shaft 6 on the first output shaft 52. Alternatively, the second output shaft 6 can be mounted without the support of the first output shaft 52, but to ensure coaxiality, at least a portion of the first output shaft 52 can be inserted into the second output shaft 6.

[0178] Optionally, there are two bearings 4, which are spaced apart along the axial direction of the first output shaft 52. This arrangement can improve the installation stability of the second output shaft 6 and prevent the second output shaft 6 from shaking.

[0179] like Figure 16 As shown, an embodiment of the fourth aspect of this utility model provides a fan, including the counter-rotating motor provided in the embodiment of the third aspect.

[0180] The fan provided according to the fourth aspect of the present invention also includes the counter-rotating motor provided in the third aspect embodiment. Therefore, the fan also includes all the beneficial effects of the counter-rotating motor provided in the third aspect embodiment, which will not be repeated here.

[0181] In any of the above embodiments, optionally, as Figures 1 to 16 As shown, the driven rotor 3 includes a second output shaft 6, and the fan also includes: a first fan blade 7, which is connected to the first output shaft 52 and can rotate with the first output shaft 52; and a second fan blade 8, which is connected to the second output shaft 6 and can rotate with the second output shaft 6.

[0182] In this embodiment, the fan further includes a first blade 7 and a second blade 8. The first blade 7 is mounted on the first output shaft 52 and rotates in a first direction, while the second blade 8 is connected to the second output shaft 6 and can rotate in a second direction. That is, the two blades rotate in opposite directions. By using two blades rotating in opposite directions, the air delivery speed can be increased, thereby increasing the air delivery distance, thus enabling the fan to deliver air over long distances.

[0183] Furthermore, since the first fan blade 7 and the second fan blade 8 are respectively mounted on the first output shaft 52 and the second output shaft 6, it is possible to ensure that the first fan blade 7 and the second fan blade 8 are concentrically set, thereby making the airflow generated by the two fan blades more stable, reducing eddies and lowering noise.

[0184] In a specific application, such as Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, the counter-rotating motor includes: a drive motor 5, a fixed plate, a driving rotor 2, a driven rotor 3, and a magnetic ring 1. Based on the magnetization direction of the magnetic ring, counter-rotating motors are classified into radial magnetic drive counter-rotating motors and axial magnetic drive counter-rotating motors.

[0185] The structure of a radial magnetic drive counter-rotating motor is as follows: Figure 1 and Figure 2 As shown: The radial magnetic drive counter-rotating motor includes a drive motor 5 and a magnetic gear. The magnetic gear includes a fixed plate, a driving rotor 2, a driven rotor 3, and a magnetic adjusting ring 1. The drive motor 5 is fixed to the fixed plate, and the driving rotor 2 is fixed to the rotating part of the drive motor 5 and rotates with the drive motor 5. A magnetic adjusting ring 1 made of soft magnetic material is provided on one side of the driving rotor 2, and the driven rotor 3 is provided on the other side of the magnetic adjusting ring 1. Both the driving rotor 2 and the driven rotor 3 are radially magnetized.

[0186] The structure of an axial magnetic drive counter-rotating motor is as follows: Figure 4 and Figure 5 As shown: The axial magnetic drive counter-rotating motor includes a drive motor 5 and a magnetic gear. The magnetic gear includes a magnetic adjusting ring 1, a driving rotor 2, a driven rotor 3, and a fixed plate. The drive motor 5 is fixed to the fixed plate, and the driving rotor 2 is fixed to the rotating part of the drive motor 5 and rotates with the drive motor 5. A magnetic adjusting ring 1 made of soft magnetic material is provided on one side of the driving rotor 2, and the driven rotor 3 is provided on the other side of the magnetic adjusting ring 1. Both the driving rotor 2 and the driven rotor 3 are axially magnetized.

[0187] like Figure 3 , Figure 6 and Figure 7 As shown, the effective magnetic guiding area of ​​the adjusting ring 1 should be consistent with the shape of the magnetizing area of ​​the driving rotor 2 and / or the driven rotor 3. The adjusting ring 1 has evenly distributed adjusting teeth 11, magnetic isolation holes 12 and magnetic isolation grooves 13. The radial magnetic drive adjusting ring 1 has a first reinforcing rib (such as mounting ring 142) and a second reinforcing rib (such as connecting ring 15) on both axial sides.

[0188] The magnetic isolation groove 13 has a chamfer 132 at one end near the connection of the magnetic isolation teeth. The number of magnetic isolation holes 12 is Q, where Q = (P1 + P2) / 2, and the number of poles of the driving rotor 2 is P1, and the number of poles of the driven rotor 3 is P2.

[0189] If the magnetic ring is radially magnetized (e.g.) Figure 8 , Figure 10 and Figure 11 The magnetized surfaces of the active and driven rotors should be radial curved surfaces of annular magnetic rings. The effective magnetic conduction area of ​​the adjusting magnetic ring 1 should also be annular. Magnetic isolation holes 12 are uniformly cut on the radial curved surface around the center of the ring in the circumferential direction.

[0190] If the magnetic ring is axially magnetized (e.g.) Figure 9 and Figure 12 The magnetized surfaces of the driving and driven rotors (as shown) should be the axial plane of a circular magnetic ring. The effective magnetic guiding area of ​​the adjusting ring 1 should also be planar, with magnetic isolation holes 12 uniformly cut around the center of the ring on the axial plane.

[0191] like Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, the counter-rotating motor structure includes: a drive motor 5, a fixed plate, a driving rotor 2, a driven rotor 3, and a magnetic adjusting ring 1. The driving rotor 2 is fixed to the rotating part of the drive motor 5, and the drive motor 5 drives the driving rotor 2 to rotate. The driving rotor 2 can be annular (e.g., Figure 8 As shown), it can also be disc-shaped (such as...). Figure 9 As shown), a magnetic adjusting ring 1 made of soft magnetic material is provided on one side of the driving rotor 2, and a driven rotor 3 (as shown) is provided on the other side of the magnetic adjusting ring 1. Figure 10 , Figure 11 and Figure 12 (As shown). The adjusting magnetic ring 1 is fixed between the driving rotor 2 and the driven rotor 3. By adjusting the magnetic circuit through the adjusting magnetic ring 1, the driven rotor 3 can be driven to rotate in the opposite direction by magnetic force.

[0192] The magnetic adjustment ring 1 is made of ferrous material with magnetic conductivity and has a certain strength and is not easily deformed. The effective magnetic conduction area of ​​the magnetic adjustment ring 1 should be consistent with the shape of the magnetization area of ​​the active rotor 2 and / or the driven rotor 3. The magnetic adjustment ring 1 has magnetic adjustment teeth 11, magnetic isolation holes 12 and magnetic isolation grooves 13 evenly distributed on it. The magnetic isolation groove 13 has a chamfer 132 at one end near the connection of the magnetic isolation teeth.

[0193] The number of magnetic isolation holes 12 is Q, where Q = (P1 + P2) / 2, where P1 is the number of poles of the driving rotor 2, P2 is the number of poles of the driven rotor 3, and B is the thickness of the adjusting ring 1. Where 0.5mm ≤ B ≤ 3mm, when B is less than 0.5mm, the adjusting ring 1 is too thin, its structural strength is too low, and it is prone to wobbling during operation, easily generating mechanical friction and noise. When B is greater than 3mm, the adjusting ring 1 suffers greater losses and occupies a larger air gap space between magnetic rings, reducing magnetic transmission efficiency. The magnetic isolation holes 12 can be irregular shapes such as rectangles, circles, ellipses, triangles, and polygons. The purpose of the magnetic isolation holes 12 is to ensure that the effective magnetic conduction area of ​​the adjusting ring 1 can transmit the magnetic circuit reasonably, reduce magnetic leakage, and improve magnetic transmission efficiency.

[0194] like Figure 3 , Figure 8 , Figure 10 and Figure 11 As shown, the magnetic ring is radially magnetized. The magnetized surfaces of the driving rotor and the driven rotor should be the radial curved surfaces of the annular magnetic ring. The effective magnetic conduction area of ​​the adjusting magnetic ring 1 should also be annular. Magnetic isolation holes 12 are uniformly cut on the radial curved surface around the center of the ring in the circumferential direction.

[0195] like Figure 3 , Figure 8 , Figure 10 and Figure 11 As shown, the axial length of the magnetic ring is H, and the axial length of the adjusting magnetic ring 1 is J, where 1 ≤ J / H ≤ 1.5. When J / H is less than 1, the axial length of the adjusting magnetic ring 1 is less than the axial length of the magnetic ring, resulting in more magnetic leakage and reduced magnetic transmission efficiency. When J / H is greater than 1.5, the axial length of the adjusting magnetic ring 1 is too large, resulting in waste of material for the adjusting magnetic ring 1 and occupying axial space, thus increasing the axial volume of the product.

[0196] The outer diameter of the inner magnetic ring is D, and the inner diameter of the adjusting magnetic ring 1 is V. 1mm≤VD≤4mm. When VD is less than 1mm, the adjusting magnetic ring 1 is prone to mechanical friction with the driving rotor 2 and / or the driven rotor 3 due to installation errors and structural sway. When VD is greater than 4mm, the air gap length between the magnetic ring and the adjusting magnetic ring 1 is too large, the magnetic resistance is too large, and the magnetic transmission efficiency is reduced.

[0197] like Figure 3 , Figure 8 , Figure 10 and Figure 11As shown, the inner diameter of the outer magnetic ring is W, and the outer diameter of the adjusting magnetic ring 1 is X. 1mm≤WX≤4mm. When WX is less than 1mm, the adjusting magnetic ring 1 is prone to mechanical friction with the driving rotor 2 and / or the driven rotor 3 due to installation errors and structural sway. When WX is greater than 4mm, the air gap length between the magnetic ring and the adjusting magnetic ring 1 is too large. Due to the low permeability of air, the magnetic resistance is too large, which reduces the magnetic transmission efficiency.

[0198] like Figure 3 , Figure 8 , Figure 10 and Figure 11 As shown, the axial length of the adjusting magnetic ring 1 is J, and the maximum axial length of the magnetic isolation hole 12 is K, where 1mm ≤ JK ≤ 4mm. When JK is greater than 4mm, the axial length of the magnetic isolation hole 12 is too small, failing to isolate the magnetic circuit, and the excessively wide magnetic bridge increases magnetic leakage, reducing magnetic transmission efficiency. When JK is less than 1mm, the width of the connection between the two sides of the magnetic isolation hole 12 is too small, resulting in insufficient strength and easy deformation, causing mechanical friction between the adjusting magnetic ring 1 and the driving rotor 2 and / or the driven rotor 3, generating noise.

[0199] like Figure 3 , Figure 8 , Figure 10 and Figure 11 As shown, the maximum circumferential angle corresponding to the magnetic isolation hole 12 is q, 100° / Q≤q≤260° / Q. When q is less than 100° / Q, the width of the magnetic isolation hole 12 is too small, the magnetic isolation effect is poor, and the effect of the magnetic adjustment ring 1 on the magnetic circuit is not obvious. When q is greater than 260° / Q, the width of the magnetic isolation hole 12 is too large, which makes the width of the magnetic adjustment tooth 11 too small, which easily causes the magnetic adjustment tooth 11 to become magnetically saturated, and reduces the magnetic adjustment effect and magnetic transmission efficiency.

[0200] like Figure 3 , Figure 8 , Figure 10 and Figure 11 As shown, the magnetic isolation grooves 13 are distributed on one or both sides of the magnetic adjustment teeth 11 along the axis, and the axial length of the magnetic adjustment teeth 11 is L; where 0.6≤L / J≤0.9. When L / J is less than 0.6, the axial length of the magnetic adjustment teeth 11 is too small, that is, the effective magnetic conduction area is too small, which easily causes magnetic saturation of the magnetic adjustment teeth 11 and increases magnetic leakage, affecting the magnetic field modulation effect; when L / J is greater than 0.9, the axial length of the magnetic adjustment teeth 11 is too large, the width of the magnetic isolation holes 12 and the magnetic isolation bridges on both sides is too small, the magnetic isolation effect is poor, the magnetic leakage increases, and the magnetic transmission efficiency and magnetic field modulation effect are affected.

[0201] like Figure 3 , Figure 8 , Figure 10 and Figure 11As shown, the magnetic isolation groove 13 has chamfers 132 at two corners near the connection of the magnetic isolation teeth. The chamfers 132 serve to strengthen the structural strength. The diameter of the chamfers 132 is v, where 0.3mm ≤ v ≤ 2mm. When v is less than 0.3mm, the area of ​​the chamfers 132 is small and cannot strengthen the magnetic bridge. When v is greater than 2mm, the area of ​​the chamfers 132 is large, resulting in greater magnetic leakage at the magnetic isolation bridge and reducing the magnetic transmission efficiency.

[0202] like Figure 3 , Figure 6 and Figure 7 As shown, on the side where the adjusting magnetic ring 1 connects to the fixing plate, a first reinforcing rib (i.e., mounting ring 142) is provided, perpendicular to the adjusting teeth 11 of the adjusting magnetic ring 1 and parallel to the plane of the fixing plate. The first reinforcing rib serves to strengthen the structural strength of the adjusting magnetic ring 1 and connect the adjusting magnetic ring 1 to the fixing plate. The first reinforcing rib can be a circular ring structure, with an inner diameter of Z and an inner diameter of V for the adjusting magnetic ring 1, where Z = V; an outer diameter of Y and an outer diameter of X for the adjusting magnetic ring 1, where 6mm ≤ YX ≤ 20mm; when YX is less than 6mm, the width of the reinforcing rib is too small, and its effect on strengthening the structural strength is small, failing to provide a stable connection between the adjusting magnetic ring 1 and the fixing plate; when YX is greater than 20mm, it occupies too much radial space, resulting in wasted space; the thickness of the first reinforcing rib is h1, where 0.5mm ≤ h1 ≤ 3mm. When h1 is less than 0.5mm, the structural strength of the reinforcing rib is low, easily causing deformation and sway; when h1 is greater than 3mm, it results in wasted axial space.

[0203] like Figure 3 , Figure 6 and Figure 7 As shown, on the other side of the axial direction of the adjusting magnetic ring 1, a second reinforcing rib (such as connecting ring 15) is provided. The second reinforcing rib serves to strengthen the structural strength. The second reinforcing rib is a circular ring structure with an outer diameter of A and an outer diameter of X for the adjusting magnetic ring 1, where A = X. The inner diameter of the second reinforcing rib is C, and the inner diameter of the adjusting magnetic ring 1 is V. 1mm ≤ VC ≤ 6mm. When VC is less than 1mm, the width of the reinforcing rib is too small and cannot strengthen the structural strength; when VC is greater than 6mm, the width of the reinforcing rib is too large, which can easily increase magnetic leakage and reduce magnetic transmission efficiency.

[0204] like Figure 3 , Figure 8 , Figure 10 and Figure 11 As shown, the thickness of the second reinforcing rib (equivalent to the connecting ring 15) is h2, 0.5mm≤h2≤3mm. When h2 is less than 0.5mm, the structural strength of the second reinforcing rib is low, and the magnetic ring 1 is prone to deformation and swaying, causing mechanical friction. When h2 is greater than 3mm, the leakage magnetic field increases, resulting in low magnetic transmission efficiency and wasting axial space.

[0205] like Figure 6 , Figure 7 , Figure 9 and Figure 12 As shown, the magnetic rings of the driving rotor 2 and the driven rotor 3 are axially magnetized, and the magnetized surfaces of the driving rotor 2 and the driven rotor 3 should be the axial plane of the annular magnetic rings. The effective magnetic conduction area of ​​the adjusting ring 1 should also be planar. The adjusting teeth 11, the magnetic isolation holes 12, and the magnetic isolation grooves 13 are evenly distributed on the adjusting ring 1, and the end of the magnetic isolation groove 13 near the connection of the magnetic isolation teeth is provided with a chamfer 132.

[0206] like Figure 6 , Figure 7 , Figure 9 and Figure 12 As shown, the inner diameter of the adjusting magnetic ring 1 is M, and the outer diameter is O. The inner diameter of the magnetic ring is E, and the outer diameter is F. Where 0.6 ≤ M / E ≤ 0.9, when M / E is greater than 0.9, the inner diameter of the adjusting magnetic ring 1 is close to the inner diameter of the magnetic ring, resulting in more magnetic leakage and reducing magnetic transmission efficiency; when M / E is less than 0.6, the inner diameter of the adjusting magnetic ring 1 is too small, resulting in waste of the magnetic conductive material. 1 ≤ O / F ≤ 1.5, when O / F is less than 1, the outer diameter of the adjusting magnetic ring 1 is smaller than the outer diameter of the magnetic ring, resulting in more magnetic leakage and reducing magnetic transmission efficiency; when O / F is greater than 1.5, the outer diameter of the adjusting magnetic ring 1 is too large, resulting in material waste and occupying radial space.

[0207] like Figure 9 and Figure 12 As shown, the radial length of the magnetic isolation hole 12 is P, where 1mm≤(OM) / 2-P≤4mm. When (OM) / 2-P is less than 1mm, the width and strength of the magnetic isolation bridge at the connection between the two sides of the magnetic isolation hole 12 are too small, which can easily cause the magnetic adjustment ring 1 to deform and generate interference friction noise between the magnetic adjustment ring 1 and the active rotor 2 and / or the driven rotor 3. When (OM) / 2-P is greater than 4mm, the width of the magnetic isolation bridge is too large, which increases the leakage magnetic field and reduces the magnetic transmission efficiency.

[0208] like Figure 6 , Figure 7 , Figure 9 and Figure 12 As shown, the maximum circumferential angle corresponding to the magnetic isolation hole 12 is i, 100° / Q≤i≤260° / Q. When i is less than 100° / Q, the width of the magnetic isolation hole 12 is too small, the magnetic isolation effect is poor, and the effect of the magnetic adjustment ring 1 on the magnetic circuit is not obvious. When i is greater than 260° / Q, the width of the magnetic isolation hole 12 is too large, which makes the width of the magnetic adjustment tooth 11 too small, which easily causes the magnetic adjustment tooth 11 to be magnetically saturated, and the magnetic adjustment effect and magnetic transmission efficiency are reduced.

[0209] like Figure 6 , Figure 7 , Figure 9 and Figure 12As shown, the magnetic isolation grooves 13 are distributed on one or both sides of the magnetic adjustment teeth 11 in the radial direction. The maximum radial length of the magnetic adjustment teeth 11 is S, 0.6≤S / (OM) / 2≤0.9. When S / (OM) / 2 is less than 0.6, the radial length of the magnetic adjustment teeth 11 is too small, which can easily cause magnetic saturation of the magnetic adjustment teeth 11 and affect the magnetic adjustment effect. When S / (OM) / 2 is greater than 0.9, the radial length of the magnetic isolation grooves 13 is too small, the magnetic isolation effect is poor, and magnetic leakage can easily occur, affecting the magnetic transmission efficiency and the magnetic adjustment effect.

[0210] The magnetic shielding groove 13 has chamfers 132 at two corners near the connection of the magnetic shielding teeth. The chamfers 132 serve to strengthen the structural strength. The diameter of the chamfers 132 is w, where 0.3mm ≤ w ≤ 2mm. When w is less than 0.3mm, the area of ​​the chamfers 132 is small and does not effectively reinforce the magnetic bridge; when w is greater than 2mm, the area of ​​the chamfers 132 is large, resulting in greater magnetic leakage at the magnetic bridge and reducing the magnetic transmission efficiency.

[0211] The rotor is a permanent magnet with a certain magnetic properties. The rotor can be a single circular magnetic ring, or it can be a ring structure made up of multiple sheet magnets, or it can be a structure in which multiple sheet magnets are inserted into a circular magnetic conductive material.

[0212] If the magnetic ring is radially magnetized, the magnetized surfaces of the driving and driven rotors should be the radial curved surfaces of the annular magnetic ring, i.e., the magnetic ring is a cylinder. The height of the cylinder is H, and the outer diameter of the cylinder is D, where 0.5 ≤ D / H ≤ 5. When the volume of the magnetic ring is constant, if D / H is less than 0.5, the magnetic ring is elongated and thin, making it difficult to manufacture, easily broken, and its magnetic properties are reduced due to its small thickness. If D / H is greater than 5, the magnetic ring is sheet-like, and the magnetized surface area is too small, further reducing its magnetic properties.

[0213] If the magnetic rings are radially magnetized, the two magnetic rings should be nested in a nested position, with the inner curved surface of the larger diameter magnetic ring magnetized and the outer curved surface of the smaller diameter magnetic ring magnetized, and the two magnetized curved surfaces facing each other.

[0214] The adjusting magnetic ring 1 is fixed between the large magnetic ring and the small magnetic ring. The inner diameter of the large magnetic ring is D1, and the outer diameter of the small magnetic ring is D2. The thickness of the adjusting magnetic ring 1 is B. Where 0.5mm ≤ B ≤ 3mm, when B is less than 0.5mm, the adjusting magnetic ring 1 is too thin, its strength is too low, and it is prone to wobbling during operation. The adjusting magnetic ring 1 contacts the driving rotor 2 and / or the driven rotor 3, generating mechanical friction and noise. When B is greater than 3mm, the adjusting magnetic ring 1 suffers greater losses and occupies a larger air gap space between the magnetic rings, reducing magnetic transmission efficiency. Where 2mm ≤ (D1-D2) / 2-B ≤ 8mm, when (D1-D2) / 2-B is less than 2mm, the magnetic ring and the adjusting magnetic ring 1 are prone to friction and noise due to assembly errors or wobbling. When (D1-D2) / 2-B is greater than 8mm, the magnetic resistance between the magnetic rings is large, the transmission efficiency is low, and it may even lead to the driven shaft losing synchronization.

[0215] If the magnetic ring is axially magnetized, the magnetization surfaces of the driving and driven rotors should be the axial planes of the annular magnetic ring, with the axial planes of the two magnetic rings facing each other. The inner diameter of the magnetic ring is E, and the outer diameter is F, with a ratio of 0.4 ≤ E / F ≤ 0.7. When E / F is less than 0.4, the inner hole of the magnetic ring is small, and the radial thickness is large, resulting in a waste of permanent magnet or magnetic conductive material. When E / F is greater than 0.7, the radial thickness of the magnetic ring is thin, the structure is fragile, processing is difficult, and the magnetic properties of the magnetic ring are low.

[0216] The distance between the adjusting magnetic ring 1 and the driving rotor 2 is G, where 0.5mm≤G≤4mm. When G is less than 0.5mm, the magnetic ring and the adjusting magnetic ring 1 are prone to interference and friction due to installation and processing errors, which can cause noise. When G is greater than 4mm, the magnetic transmission efficiency will be greatly reduced, which will affect the efficiency of the magnetic transmission and may even cause the driven shaft to lose synchronization.

[0217] The distance between the adjusting magnetic ring 1 and the driven rotor 3 is I, 0.5mm≤I≤4mm. When I is less than 0.5mm, the magnetic ring and the adjusting magnetic ring 1 are prone to interference and friction due to installation error and processing error, which will cause noise. When I is greater than 4mm, the magnetic transmission efficiency will be greatly reduced, which will affect the efficiency of the magnetic transmission and even cause the driven shaft to lose synchronization.

[0218] In the description of this specification, the terms "connection," "installation," and "fixing," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0219] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0220] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A magnetic adjustment assembly, comprising: The magnetic adjusting assembly comprises: a mounting bracket; a magnetic adjusting ring comprising a mounting member; and a plurality of magnetic adjusting teeth, the mounting member is mounted on the mounting bracket, the plurality of magnetic adjusting teeth are mounted on the mounting member in a first circumferential direction at intervals, a magnetic gap is formed between two adjacent magnetic adjusting teeth, one end of the plurality of magnetic adjusting teeth along a length direction is connected to the mounting member, and the other end of the plurality of magnetic adjusting teeth along the length direction is provided in a suspended manner. The mounting member and the plurality of magnetic adjusting teeth are in an integrated structure.

2. The magnetic adjusting assembly according to claim 1, wherein the mounting member comprises a mounting ring, the plurality of magnetic adjusting teeth are arranged along an axial direction of the mounting ring, the mounting bracket comprises a mounting plate, a limiting structure is arranged on the mounting plate, and one end of the magnetic adjusting ring close to the mounting ring is mounted on the mounting plate and is limited by the limiting structure.

3. The magnetic adjusting assembly according to claim 1, wherein the mounting member comprises a mounting ring, the plurality of magnetic adjusting teeth are arranged on an inner side of the mounting ring in a radial direction of the mounting ring; the mounting bracket comprises a mounting sleeve, and the magnetic adjusting ring is mounted on an inner side of the mounting sleeve.

4. The magnetic assembly of claim 1, wherein, The magnetic adjusting teeth are provided with a magnetic gap groove on one end or both ends along the length direction.

5. The magnetic adjusting assembly according to claim 4, wherein the magnetic adjusting teeth comprise two end portions arranged along the length direction, the magnetic gap groove is provided with a chamfer, the chamfer is arranged on a side of the magnetic gap groove close to the end portion, and the magnetic gap groove is provided with the chamfer on one end or both ends distributed along the first circumferential direction.

6. The magnetic assembly of claim 5, wherein, The diameter of the chamfer is v, wherein 0.3mm≤v≤2mm.

7. The magnetic assembly of claim 5, wherein, The magnetic adjusting ring further comprises: a reinforcing structure arranged on a side of the magnetic gap groove close to the end portion, and the magnetic gap groove is provided with the chamfer on one end or both ends distributed along the first circumferential direction.

8. The magnetic assembly of claim 1, wherein, The mounting member comprises a mounting ring, and the magnetic adjusting ring further comprises: a connecting ring connected to one end of the plurality of magnetic adjusting teeth away from the mounting member, and the connecting ring is arranged at intervals with the mounting ring along the length direction; the plurality of magnetic adjusting teeth are arranged along an axial direction of the mounting ring, the mounting ring and the connecting ring are arranged at intervals along the axial direction of the mounting ring, or the plurality of magnetic adjusting teeth are arranged on an inner side of the mounting ring in a radial direction of the mounting ring, and the mounting ring and the connecting ring are arranged at intervals along the radial direction of the mounting ring.

9. The magnetic adjusting assembly according to claim 8, wherein the mounting member comprises a mounting ring, the plurality of magnetic adjusting teeth are arranged along an axial direction of the mounting ring, and the mounting ring and the connecting ring are arranged at intervals along the axial direction of the mounting ring; an inner diameter of the mounting ring is Z, an inner diameter of the magnetic adjusting ring is V, Z=V, and / or an outer diameter of the mounting ring is Y, an outer diameter of the magnetic adjusting ring is X, 6mm≤Y-X≤20mm, and / or a thickness of the mounting ring is h1, 0.5mm≤h1≤3mm; and / or An outer diameter of the connecting ring is A, an outer diameter of the magnetic adjusting ring is X, A=X, and / or an inner diameter of the connecting ring is C, an inner diameter of the magnetic adjusting ring is V, 1mm≤V-C≤6mm, and / or a thickness of the connecting ring is h2, 0.5mm≤h2≤3mm.

10. The magnetic assembly of claim 1, wherein, The magnetic adjusting ring is a metal magnetic conducting ring or a non-metal magnetic conducting ring; or the magnetic adjusting ring is a soft magnetic magnetic adjusting ring.

11. The magnetic assembly of claim 1, wherein, Further comprising: A filling piece is arranged in the magnetic isolation hole, and the filling piece is a non-magnetic conducting material.

12. The flux assembly of any one of claims 1-11, wherein, The magnetic adjusting ring is used for a contra-rotating electric machine, the contra-rotating electric machine comprises a driving rotor and a driven rotor, the magnetic adjusting ring is located between the driving rotor and the driven rotor, and the number of the magnetic isolation holes is Q, wherein Q=(P1+P2) / 2, P1 is the number of poles of the driving rotor, and P2 is the number of poles of the driven rotor.

13. The flux assembly of any one of claims 1-11, wherein, A thickness of the magnetic adjusting ring is B, wherein 0.5mm≤B≤3mm.

14. The flux assembly of any one of claims 4-7, wherein, The magnetic isolation slot comprises at least one of a rectangle, a circle, an ellipse, a triangle, and a polygon.

15. The flux assembly of any one of claims 1-11, wherein, The magnetic adjusting ring is used for a contra-rotating electric machine, the contra-rotating electric machine comprises two rotors, the magnetic adjusting ring is located between the two rotors, and the two rotors are respectively located on two sides of the magnetic adjusting ring in a radial direction, wherein: A length of the rotor in the length direction is H, a length of the magnetic adjusting ring in the length direction is J, 1≤J / H≤1.5; and / or An outer diameter of the rotor located on an inner side of the magnetic adjusting ring in the radial direction is D, an inner diameter of the magnetic adjusting ring is V, 0.2mm≤V-D≤1.3mm; and / or An inner diameter of the rotor located on an outer side of the magnetic adjusting ring in the radial direction is W, an outer diameter of the magnetic adjusting ring is X, 0.2mm≤W-X≤1.3mm; and / or A length of the magnetic adjusting ring in the length direction is J, a length of the magnetic isolation hole in the length direction is K, 1mm≤J-K≤4mm; and / or A circumferential angle corresponding to the magnetic isolation hole in the first circumferential direction is q, 100° / Q≤q≤260° / Q, wherein Q is the number of the magnetic isolation holes; and / or A length of the magnetic adjusting ring in the length direction is J, and a length of the magnetic adjusting tooth in the length direction is L; wherein 0.6≤L / J≤0.

9.

16. The magnetic adjusting assembly according to any one of claims 1 to 11, wherein: The magnetic adjusting ring is used for a contra-rotating electric machine, the contra-rotating electric machine comprises two rotors, the magnetic adjusting ring is located between the two rotors, and the two rotors are respectively located on two sides of the magnetic adjusting ring in an axial direction, wherein: The magnetic adjusting ring and the rotor are both circular rings, an inner diameter of the magnetic adjusting ring is M, an outer diameter of the magnetic adjusting ring is O, an inner diameter of the rotor is E, and an outer diameter of the rotor is F, wherein 0.3≤M / E≤0.9, and / or 1≤O / F≤1.5; and / or A length of the magnetic isolation hole in the length direction is P, wherein 0.1mm≤(O-M) / 2-P≤4mm, a circumferential angle corresponding to the magnetic isolation hole in the first circumferential direction is q, 30° / Q≤q≤300° / Q, wherein Q is the number of the magnetic isolation holes; and / or The length of the magnetic tooth along the length direction is S, wherein 0.6≤S / (O-M) / 2≤0.

9.

17. A magnetic gear, characterized by Comprise: The magnetic adjusting assembly according to any one of claims 1 to 16; And The driving rotor and the driven rotor are respectively located on two sides of the magnetic adjusting ring in the axial direction, wherein the inner diameter of the driven rotor and / or the driving rotor is E, the outer diameter of the driven rotor and / or the driving rotor is F, 0.4≤E / F≤0.7, and / or the distance between the magnetic adjusting ring and the driving rotor and / or the driven rotor along the length direction is G, wherein 0.5mm≤G≤4mm.

18. The magnetic gear according to claim 17, wherein, The driving rotor and the driven rotor are respectively located on two sides of the magnetic adjusting ring in the axial direction, wherein the inner diameter of the driven rotor and / or the driving rotor is E, the outer diameter of the driven rotor and / or the driving rotor is F, 0.4≤E / F≤0.7, and / or the distance between the magnetic adjusting ring and the driving rotor and / or the driven rotor along the length direction is G, wherein 0.5mm≤G≤4mm.

19. The magnetic gear according to claim 17, wherein, The driving rotor and the driven rotor are respectively located on two sides of the magnetic adjusting ring in the axial direction, wherein the inner diameter of the driven rotor and / or the driving rotor is E, the outer diameter of the driven rotor and / or the driving rotor is F, 0.4≤E / F≤0.7, and / or the distance between the magnetic adjusting ring and the driving rotor and / or the driven rotor along the length direction is G, wherein 0.5mm≤G≤4mm. Comprise:

20. A contra-rotating electric machine characterized by The driving motor comprises a first output shaft; The magnetic gear according to any one of claims 17 to 19, wherein the driving rotor is mounted on the first output shaft, and the driven rotor comprises a second output shaft, and the rotation direction of the second output shaft is opposite to that of the first output shaft. The second output shaft comprises:

21. The contra-rotating electric machine of claim 20, wherein, A support sleeve is supported and mounted on the first output shaft and can rotate relative to the first output shaft; A mounting portion is connected with the support sleeve, and at least part of the driving rotor and the mounting portion are respectively located on two sides of the magnetic adjusting ring, and the driven rotor is mounted on the mounting portion corresponding to the driving rotor. Further comprise:

22. The contra-rotating electric machine of claim 21, wherein, One or more bearings are mounted between the first output shaft and the support sleeve, and the support sleeve is rotatably mounted on the first output shaft through the one or more bearings. The number of bearings is two, and the two bearings are arranged in the axial direction of the first output shaft.

23. The contra-rotating electric machine of claim 22, wherein, Further comprise:

24. The contra-rotating electric machine of claim 21, wherein, A motor support, wherein the driving motor and the magnetic adjusting ring are mounted on the motor support; The driving motor further comprises a motor body, at least part of the first output shaft is mounted in the motor body, and at least part of the first output shaft extends out of the motor body; Wherein, the motor body and the magnetic gear are located on the same side of the motor support, or the motor body and the magnetic gear are respectively located on two sides of the motor support. Comprise the contra-rotating motor according to any one of claims 20 to 24.

25. A fan, comprising: Further comprise:

26. The fan of claim 25, wherein, ​ A first fan blade is connected with the first output shaft and can rotate following the first output shaft; A second fan blade is connected with the second output shaft and can rotate following the second output shaft.

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