WO2019242427A1

WO2019242427A1 - Permanent magnet drive assembly

Info

Publication number: WO2019242427A1
Application number: PCT/CN2019/086665
Authority: WO
Inventors: 王之焕
Original assignee: 王之焕
Priority date: 2018-06-19
Filing date: 2019-05-13
Publication date: 2019-12-26
Also published as: CN108533716A

Abstract

Disclosed is a permanent magnet drive assembly, comprising a driving member and a driven member, the driving member comprising a first main body and multiple first teeth, the driven member comprising a second main body and multiple second teeth, wherein the first main body of the driving member comprises at least a first layer and a second layer which are stacked, and adjacent teeth in the multiple first teeth are respectively located in different layers, the second main body of the driven member comprises at least a first layer and a second layer which are stacked, and adjacent teeth in the multiple second teeth are respectively located in different layers, and a first tooth of the driving member located in the first layer can mesh with a corresponding second tooth of the driven member located in the first layer, an adjacent tooth of the driving member located in the second layer can mesh with an adjacent tooth of the driven member located in the second layer, and each of the first teeth of the driving member is in a reverse direction of magnetization of the second tooth of the driven member with which it needs to mesh.

Description

Permanent magnet drive assembly

This application claims priority from Chinese patent application 201810640099.X, filed on June 19, 2018, which is a method of manufacturing a permanent magnet drive gear, the entire contents of which are incorporated herein by reference.

Technical field

The invention relates to the field of transmission mechanisms, and in particular, to a gear transmission assembly without contact, friction, and magnetic transmission relying on permanent magnets.

Background technique

In the existing non-contact torque transmission of different shafts and radial directions, generally, a magnetic mechanism is used in a two-dimensional space to distribute the magnetic stages in a two-dimensional space to form a cylindrical mechanism. The radial torque transmission of different shafts in contact has the biggest advantages: no contact, no wear, reliable operation, and good overload protection. However, the shortcomings of this type of magnetic transmission of different shafts are also obvious. Because of the two-dimensional spatial distribution of magnetic stages, the magnetic stages of multiple small-volume magnets are arranged to form different shafts that do not contact the torque in the radial direction. The structure transmits torque under the influence of a certain transmission distance, so the transmitted torque is small, which affects the transmission efficiency. It is still greatly limited to be widely used in industrial machinery transmission. In the existing gear transmission mechanism, transmission needs to be achieved through the contact and meshing of gear teeth. Although it has a large rotational torque transmission capability, during the contact and meshing process of the gear teeth, the surface of the gear teeth rigidly contacts and collides. And it is close to the line contact, the contact area is small, which causes the gear surface to be easily worn. At the same time, it needs to be operated under the condition of lubricant. In the long-term work, it needs to be maintained frequently. It meets the requirements of many modern pharmaceutical, food, and other industries that require high vacuum, dust-free and cleanliness, or high sanitary environments, as well as unreliable long-term and reliable workplaces.

Summary of the Invention

In order to solve the problems in the prior art, according to the present invention, a permanent magnet drive assembly is provided. The permanent magnet drive assembly is designed in an optimized three-dimensional space magnetic level through a magnetic force between permanent magnets and an asymmetrically distributed magnetic level design method. Adopted as few magnet distribution and layout designs as possible, integrated the optimization of the magnetic field line layout of multiple magnets in three-dimensional space, and designed the existing structure, which can achieve larger different shafts with the same volume and no radial contact torque. Transmission can even directly replace the scheme of mechanical gear transmission. It can completely avoid the contact and collision friction and wear between the two gear teeth of the existing machinery when the gears mesh with each other. At the same time, compared with the existing magnetic transmission design that uses the two-dimensional spatially distributed magnetic level design The torque has been greatly increased, thereby improving the reliability, durability and range of use of this magnetic transmission gear mechanism.

The basic principle adopted by the realization technology of the present invention is: the use of the opposite-sex attraction and the same-sex repulsion between permanent magnets to make the relative changes of the polarities of two permanent magnets when moving with each other, especially the optimization design of the magnetic level in three-dimensional space and The magnetic level asymmetrical distribution design method uses as few magnet distribution and layout designs as possible to achieve larger different shafts and radial non-contact torque transmission, so it has a larger transmission torque than the existing conventional magnetic transmission.

According to the present invention, there is provided a permanent magnet drive assembly including a driving member including a first body and a plurality of first teeth, and the driven member including a second body and a plurality of first teeth Two teeth, the first body of the driving member includes at least a stacked first layer and a second layer, and adjacent teeth of the plurality of first teeth are respectively located in different layers from each other, the driven gear The second body includes at least a stacked first layer and a second layer, and adjacent teeth of the plurality of second teeth are respectively located in different layers from each other, and the active member is located in the first layer One first tooth can be engaged with a corresponding second tooth of the driven member located in the first layer, and an adjacent tooth of the driven member located in the second layer can be located with the driven member. Adjacent teeth in the second layer are meshed, and each of the first teeth of the driving member is opposite the magnetization direction of the second teeth of the driven member to be meshed with.

Preferably, the driving member is a driving gear and the driven member is a driven gear, wherein the driving gear includes a first gear plate and a plurality of uniformly fixed on an outer periphery of the first gear plate. A first gear wheel, and the driven gear includes a second gear wheel and a plurality of second gear wheels uniformly fixed on an outer periphery of the second gear wheel, the first gear wheel includes at least a first layer and a first gear wheel; Two layers, and the second gear plate includes at least a first layer and a second layer, wherein adjacent gear teeth of the plurality of first gear teeth are located in different layers of the first gear plate, and Adjacent gear teeth of the plurality of second gear teeth are located in different layers of the second gear plate.

Preferably, the driving member is one of a gear and a rack, and the driven member is the other of a gear and a rack, wherein the gear includes a first gear plate and is uniformly fixed to the gear A plurality of first gear teeth on an outer periphery of the disk, and the first gear disk includes at least a first layer and a second layer, and adjacent first gear teeth of the plurality of first gear teeth are fixed to be different from each other In the layer, the rack includes a second body and a plurality of second teeth fixed to the body evenly spaced apart, and the second body includes at least a first layer and a second layer, and the plurality of Adjacent second teeth of the second teeth are fixed in layers different from each other.

By placing adjacent gear teeth or teeth in different layers, during the driving process, the meshed gear teeth or tooth pairs will not be affected by other gear teeth or teeth, especially the adjacent gear teeth or teeth To achieve effective transmission.

Preferably, the gear plate or the body is formed of a non-magnetic material, and the gear teeth or teeth are formed of a permanent magnet material.

Preferably, the number of gear teeth on the driving gear or the driven gear is an even number.

Preferably, the number of teeth on the driving member and the driven member are different.

Preferably, the permanent magnetic material is a ferromagnetic material.

The beneficial effect of the present invention is that, because the permanent magnet is directly used as the gear tooth transmission, the utilization rate of the magnetic field of the magnet is greatly improved, and the gear teeth of the active member and the passive member are transmitted to the opposite magnetic field by two permanent magnets during the transmission process. It is realized by the attraction and the compression of the same magnetic field. The torque mode of this power transmission is far greater than that of the traditional magnetic transmission which only attracts through the surface of the magnetic field. In addition, according to the magnetic transmission of the present invention, by arranging the magnetic poles in a three-dimensional space, an efficient torque transmission layout is achieved, and as large as possible a magnet can be used while achieving the torque transmission, which further promotes the large torque Torque transmission. It can realize the transmission torque close to direct mechanical contact without contact, and at the same time has the advantages of no friction, no wear, high transmission efficiency, long-term reliable operation, etc. It is hoped that it can be used in food, medicine, vacuum or dust-free, etc. Applications in the environment.

BRIEF DESCRIPTION OF THE DRAWINGS

Other features, details and advantages of the present invention will become more apparent upon reading the description given below in a diagrammatic manner and with reference to the accompanying drawings, in which:

FIG. 1 is a schematic diagram of a permanent magnetic force transmission gear assembly according to the present invention.

detailed description

Hereinafter, a magnetic transmission structure according to the present invention will be described in detail with reference to the accompanying drawings. It is pointed out that the description is for illustrative purposes only and is not limiting, and those skilled in the art will appreciate that the present invention can be implemented in a variety of ways and should not be limited to the preferred embodiments described herein.

In the following description, it should be pointed out that, regarding the description of the direction, the axial direction, the circumferential direction, and the radial direction are made with reference to the directions shown in the drawings for the convenience of explanation and description, but the present invention is not It is limited to this, but may vary according to the specific application situation or installation position of the described components or devices.

As shown in FIG. 1, the permanent magnetic force transmission assembly according to the present invention includes a first gear 1 or a driving gear and a second gear 2 or a driven gear, and the first gear 1 is driven by a prime mover, such as a motor, to rotate about its axis. . In the following description, the axial direction refers to the axial direction around which the first gear 1 or the second gear 2 rotates, that is, the direction perpendicular to the paper surface of FIG. 1, and the radial direction refers to the paper surface of FIG. 1. A direction perpendicular to the axial direction, and a circumferential direction refers to a direction around the axial direction.

The first gear 1 includes a gear plate 11 and a plurality of teeth 12 provided on the outer periphery of the gear plate 11 at regular intervals in the circumferential direction. The gear plate 11 includes, for example, a first layer and a second layer and is The plurality of teeth 12 are made of a magnetically conductive material, and the plurality of teeth 12 are made of a permanent magnet, wherein, for example, one of the plurality of teeth 12 is fixed in a first layer and the teeth adjacent thereto are fixed in a second layer. In such a manner that adjacent teeth 12 are respectively located in layers different from each other. When viewed in the axial direction, the magnetization direction of each of the teeth 12 is in the circumferential direction. Therefore, as shown in FIG. 1, the S and N poles of each tooth are arranged in a clockwise direction.

The second gear 2 similarly includes a gear plate 21 and a plurality of teeth 22 provided on the outer periphery of the gear plate 21 along a regular interval, the gear plate 21 including, for example, a first layer and a second layer and The magnetically permeable material is made, and the plurality of teeth 22 are made of a permanent magnet. Similar to the teeth 12, one of the plurality of teeth 22 is, for example, fixed in the first layer, and its adjacent teeth are fixed in the second layer, so that the adjacent teeth 22 are respectively located in different layers from each other. When viewed in the axial direction, each of the teeth 22 is magnetized in the circumferential direction, and thus, as shown in FIG. 1, the S and N poles of each tooth are aligned in a counterclockwise direction, that is, the second gear The magnetization direction of the teeth 22 of 2 is opposite to the magnetization direction of the teeth 12 of the first gear 1.

Although in FIG. 1, the first gear 1 and the second gear 2 are shown to include six teeth, it is obvious that the present invention is not limited to this, but may include any number of teeth, and the first gear and the second gear The number of teeth need not be the same.

Each of the first gear 1 and the second gear 2 can be made as follows. First, a gear plate 11 or 21 is made of a non-magnetic material, and then a plurality of teeth 12 or 22 are made of a permanent magnetic material, and the plurality of teeth 12 or 22 are fixed to the gear plate in a manner that they are located in different layers from each other. On 11 or 21, the fixing can be achieved by various methods such as dovetail connection, adhesive bonding, welding and the like.

The first gear 1 and the second gear 2 may be installed such that the teeth 11 of the first gear 1 and the teeth 21 of the second gear 2 mesh with each other, that is, the gear plate 11 of the first gear 1 and the gears of the second gear 2 The disk 21 is registered so that the teeth 12 located in the first layer of the first gear disk 11 can mesh with the teeth 22 located in the first layer of the second gear disk 21 and the adjacent teeth located in the second layer 12 may mesh with adjacent teeth 22 located in the second layer. As shown in FIG. 1, due to the opposite magnetization directions of the teeth 11 and 21, when the first gear 1 is driven (eg, clockwise) by the prime mover, the N pole of the teeth 11 of the first gear 1 will approach The N pole of the tooth 21 of the second gear 2 is repulsive by the same sex, the tooth 11 of the first gear 1 will push the tooth 21 of the second gear 2 and drive the second gear 2 to rotate in the counterclockwise direction. Therefore, the power can be transmitted without the direct contact friction of the gear teeth, thereby achieving the purpose of non-contact and high torque transmission.

The magnetic transmission gear assembly according to the present invention is not limited to conventional straight magnetic parallel shaft gear transmission, but can be extended to any occasion where gear transmission can be used for speed change, such as linear transmission of gears and racks, and transmission of two helical gears. Angle changes, multiple sets of gears in the gear box change sides, planetary gearboxes, etc.

According to the present invention, by arranging adjacent teeth in different layers of the gear plate, it is possible to avoid being hindered by teeth other than the meshing tooth pair during the transmission process, thereby achieving effective magnetic transmission.

Although the above is a detailed description of the preferred embodiments of the present invention, in view of the above description, those skilled in the art can conceive various improvements and modifications. Therefore, the present invention should not be limited to the specific embodiments described above, and the protection scope of the present invention is limited only by the appended claims and their equivalents.

Claims

A permanent magnet transmission assembly includes a driving member and a driven member, the driving member includes a first body and a plurality of first teeth, the driven member includes a second body and a plurality of second teeth, and the driving member The first body of the component includes at least a first layer and a second layer that are stacked, and adjacent teeth of the plurality of first teeth are respectively located in different layers from each other. The second body of the driven gear includes at least A first layer and a second layer that are stacked, and adjacent teeth of the plurality of second teeth are respectively located in different layers from each other, and one of the first teeth of the active member located in the first layer can communicate with A corresponding second tooth of the driven member located in the first layer is engaged, and an adjacent tooth of the driven member located in the second layer can be in phase with the phase of the driven member located in the second layer. Adjacent teeth are meshed, and each of the first teeth of the driving member is opposite the magnetization direction of the second teeth of the driven member to be meshed with.
The permanent magnet transmission assembly of claim 1, wherein the driving member is a driving gear and the driven member is a driven gear, wherein the driving gear includes a first gear plate and is uniformly fixed to the driving gear. A plurality of first gear teeth on the outer periphery of the first gear plate, and the driven gear includes a second gear plate and a plurality of second gear teeth uniformly fixed on the outer periphery of the second gear plate, the first gear plate A gear plate includes at least a first layer and a second layer, and the second gear plate includes at least a first layer and a second layer, wherein adjacent gear teeth of the plurality of first gear teeth are located in the gear layer. The first gear plate is in different layers, and adjacent gear teeth of the plurality of second gear teeth are located in different layers of the second gear plate.
The permanent magnet transmission assembly of claim 1, wherein the driving member is one of a gear and a rack, and the driven member is the other of a gear and a rack, wherein the gear includes a first A gear plate and a plurality of first gear teeth uniformly fixed on the outer periphery of the gear plate, and the first gear plate includes at least a first layer and a second layer, and Adjacent first wheel teeth are fixed in different layers from each other, the rack includes a second body and a plurality of second teeth fixed on the body evenly spaced apart, and the second body includes at least a first Layer and the second layer, and adjacent second teeth of the plurality of second teeth are fixed in layers different from each other.
The permanent magnet transmission assembly according to any one of claims 1 to 3, wherein the gear plate or the main body is formed of a non-magnetic conductive material, and the gear teeth or teeth are formed of a permanent magnetic material.
The permanent magnet transmission assembly according to claim 2, wherein the number of gear teeth on the driving gear or the driven gear is an even number.
The permanent magnet transmission assembly according to claim 1 or 3, wherein the number of teeth on the driving member and the driven member are different.
The permanent magnet transmission assembly according to claim 4, wherein the permanent magnet material is a ferromagnetic material.