KR101282813B1 - Magnetic coupling for no-load - Google Patents

Abstract

The present invention relates to a no-load magnet coupling, and more particularly, to a no-load magnet coupling that improves a rotating force of a conveyor shaft and reduces damage to a shaft bearing and facilitates detachment and attachment.
A no-load magnet coupling according to the present invention comprises a first magnet gear and a second magnet gear which are opposed to each other in a noncontact manner, and each of the first and second magnet gears includes a plurality of divided magnets alternately arranged in an N- A rotary magnet having a donut shape magnetically coupled to the magnet; A repulsive magnet positioned inside or outside the rotating magnet and having a donut shape magnetized to an N pole or an S pole; And a housing in which the rotating magnet and the repulsion magnet are inserted and a shaft connected to the conveyor is coupled to the one surface.

Description

Magnetic coupling for no-load < RTI ID = 0.0 >

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a no-load magnet coupling, and more particularly, to a no-load magnet coupling capable of reducing the load of a rotating bearing while transmitting a rotational force of a noncontact shaft,

Conventionally known gear transmission systems have adopted a gear transmission system involving mechanical contact.

However, such a mechanical gear has a problem in that moving noise is generated by the meshing of the gears, and there is a problem of deterioration of durability performance due to generation of dust due to meshing between the gears, and lubrication must be performed regularly.

Recently, as a technique to replace such a mechanical gear, a magnet gear that transmits power by non-contact using the attracting force and the repulsive force of magnetic has been developed and used.

These magnetic gears are devices that transmit power in a non-contact manner using magnets to LCD manufacturing facilities, semiconductor manufacturing facilities, pharmaceutical facilities, and food manufacturing facilities that require high cleaning in preparation for pollution caused by dust, metal particles and noise generation .

A conventional cylindrical magnet gear is mounted with a shaft in a hole in an aluminum or plastic holder with an aluminum or plastic injection holder held in a magnet gear.

That is, the cylindrical magnet is integrally formed, and the outer diameter of the cylindrical magnet is changed according to the equipment in which the cylindrical magnet is used. The cylindrical gear of the cylindrical magnet of different sizes is manufactured by separately manufacturing the mold according to the outer diameter, I have a problem of going up.

In addition, in the case of using a combination of the magnet gears as a coupling, the rotational force transmitted to the shaft by the magnet gear becomes a problem, and efforts to improve such a portion are continuing.

In addition, as compared with the mechanical coupling, the magnet coupling can completely separate the driving part and the rotating part, so that the driving part can be moved, so that the multi-stage structure can freely be used in a place where the conveyor, Will continue to be steadily going forward.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems occurring in the prior art, and an object of the present invention is to manufacture a cylindrical magnet having various outer diameters by using a split magnet and manufacture a magnet coupling using the same.

It is also intended to disclose the structure of a magnet coupling that can be applied to a variety of conveyor devices and to facilitate the industrial approach of the product accordingly.

In addition, damage of the bearing of the shaft due to use for a long time is prevented by the attraction force generated between the magnet couplings, so that foreign matter generated by the friction of the bearing can be minimized.

In addition, a repulsive force opposite to the attractive force generated between the magnet couplings is generated to facilitate detachment and attachment of the magnet.

According to an aspect of the present invention, there is provided a no-load magnet coupling comprising a first magnet gear and a second magnet gear which are opposed to each other in a noncontact manner and each of the first and second magnet gears includes a plurality of divided magnets A rotary magnet having a donut shape magnetically coupled to N and S poles alternately; A counter electromagnet having a donut shape located on the inside or outside of the rotating magnet and facing each other in the same polarity; And a housing in which the rotating magnet and the repulsion magnet are inserted and a shaft connected to the conveyor is coupled to the one surface.

Preferably, the housing has a first opening through which the rotating magnet is inserted and a second opening through which the repulsion magnet is inserted, and the opening directions of the first opening and the second opening are formed in opposite directions.

Here, the rotating magnet which is inserted and seated in the first opening and the second opening is covered with a donut-shaped first nonmagnetic piece, and the rebound magnet is covered with a donut-shaped second nonmagnetic piece.

Further, a no-load magnet coupling according to the present invention is composed of a first magnet gear and a second magnet gear which are opposed to each other in a noncontact manner, and each of the first and second magnet gears includes a plurality of divided magnets alternately arranged in an N- And a rotat magnet magnetically coupled to the S pole and having a donut shape; A counter electromagnet having a donut shape located on the inside or outside of the rotating magnet and facing each other in the same polarity; A housing into which the rotating magnet and the resilient magnet are inserted and is coupled with the holder; And a holder coupled to the housing at one side and a shaft coupled to the conveyor at the other side.

Here, the rotating magnet preferably has a trapezoidal shape in cross section or a fan shape having an outer long arc and an inner short arc.

Here, the first and second magnet gears may be a combination of six, eight, ten, twelve, fourteen, sixteen pole split magnets.

According to the structure of the present invention described above, it is possible to produce a cylindrical magnet having various outer diameters by using the split magnet, and manufacture the magnet coupling using the cylindrical magnet.

In addition, it is possible to disclose the structure of a magnet coupling which can be applied to various conveyor devices, thereby facilitating the industrial approach of the products and further promoting industrial development of the conveyor system.

In addition, damage of the bearing of the shaft due to use for a long period of time can be prevented by the attraction force generated between the magnet couplings, foreign matter generated by the friction of the bearing can be minimized, and the quality of the conveyor system can be improved.

In addition, a repulsive force opposite to the attractive force generated between the magnet couplings is generated, and the magnet can be easily attached and detached, thereby facilitating the replacement work of the parts.

1 is a perspective view of a no-load magnetic coupling according to the first and second embodiments of the present invention.
2 is an exploded perspective view of a no-load magnetic coupling according to a first embodiment of the present invention.
3 is a cross-sectional view of a magnetic gear of a no-load magnetic coupling according to a first embodiment of the present invention.
4 is an exploded perspective view of a no-load magnetic coupling according to a second embodiment of the present invention.
5 is a cross-sectional view of a magnetic gear of a no-load magnetic coupling according to a second embodiment of the present invention.
6 is a perspective view of a no-load magnetic coupling according to the third and fourth embodiments of the present invention.
7 is an exploded perspective view of a no-load magnetic coupling according to a third embodiment of the present invention.
8 is a cross-sectional view of a magnetic gear of a no-load magnetic coupling according to a third embodiment of the present invention.
9 is an exploded perspective view of a no-load magnetic coupling according to a fourth embodiment of the present invention.
10 is a cross-sectional view of a magnetic gear of a no-load magnetic coupling according to a fourth embodiment of the present invention.

Hereinafter, the structure and operation of a no-load magnet coupling according to the present invention will be described with reference to the accompanying drawings.

[The first and second aspects of the present invention In the embodiment  No load according to Magnet  Coupling]

1 is a perspective view of a no-load magnetic coupling according to the first and second embodiments of the present invention.

1, in a no-load magnetic coupling 100 according to the first and second embodiments of the present invention, the first magnet gear 110a and the second magnet gear 110b are opposed to each other in a non- And is connected to shafts 120a and 120b.

FIG. 2 is an exploded perspective view of a no-load magnetic coupling according to a first embodiment of the present invention, and FIG. 3 is a sectional view of a no-load magnetic coupling according to a first embodiment of the present invention.

As shown in FIG. 2, in the no-load magnet coupling 200 according to the first embodiment of the present invention, a pair of left and right magnet gears 210a and 210b are positioned facing each other in a non-contact manner.

The first and second magnet gears 210a and 210b are disposed opposite to each other in a noncontact manner and one end of each of the first and second magnet gears 210a and 210b is coupled to the shaft 220a, 220b.

Each of the first and second magnetic gears 210a and 210b includes housings 230a and 230b for inserting and fixing rotating magnets 240a and 240b and resilient magnets 250a and 250b therein, And rotating magnets 240a and 240b having a donut shape coupled with the rotating magnets 240a and 240b and resilient magnets 250a and 250b integrally formed and positioned inside the rotating magnets 240a and 240b.

The rotating magnets 240a and 240b are formed by coupling a plurality of divided magnets 241a and 241b, and N and S poles are alternately arranged.

The number of poles of the plurality of divided magnets 241a and 241b is preferably selected from six poles, eight poles, ten poles, twelve poles, fourteen poles, or sixteen poles.

Each of the plurality of divided magnets 241a and 241b may have a fan shape or a trapezoidal shape in cross section, and may have a long arc at the outer side and a short arc at the inner side.

Each of the divided magnets 241a and 241b is made to have the same size, and the number of the divided magnets 241a and 241b is adjusted so that the outer diameter of the entire magnet can be adjusted. When the outer diameter of the magnet is D and the two divided magnets are taken out to form 10 poles, a magnet having an outer diameter of D1 smaller than the outer diameter D can be formed. Conversely, two divided magnets can be added to form a 14 A magnet having an outer diameter D2 larger than the outer diameter D can be formed.

The resilient magnets 250a and 250b are located inside the rotating magnets 240a and 240b and the resilient magnet 250a of the first magnet gear 210a and the resilient magnet 250b of the second magnet gear 210b The polarities of the opposing surfaces are magnetized so as to have the same polarity.

In the drawing, the surfaces of the repulsion magnet 250a and the repulsion magnet 250b facing each other are magnetized to N poles, and the surface opposite to the magnet is magnetized to the S pole. On the contrary, the surfaces of the repulsion magnets 250a and 250b facing each other can be magnetized to the S pole, and the surface opposite to the magnetron can be magnetized to the N pole.

Each of the housings 230a and 230b has a first opening 260a and a second opening 260b through which the rotating magnets 240a and 240b can be inserted and seated and the second openings 260a and 260b, (270a, 270b).

The openings of the first openings 260a and 260b are formed in a direction in which the shafts 220a and 220b are located and the openings of the second openings 270a and 270b are formed in the first openings 260a and 260b. As shown in FIG.

Shaped first nonmagnetic pieces 280a and 280b are covered with the rotating magnets 240a and 240b that are inserted and seated in the first and second openings 260a and 260b, The donut-shaped second non-magnetic body pieces 290a and 290b are covered.

Referring to FIG. 3, since the first and second magnet gears 210a and 210b have the same internal structure, the first magnet gear 210a will be described with reference to FIG.

The magnet gear 210a has a rotating magnet 240a coupled to the outer diameter side of the housing 220a and a resilient magnet 250a coupled to the inner diameter side of the housing 220a.

The housing 220a serves to secure the rotary magnet 240a and the repulsion magnet 250a while protecting them, and a non-magnetic material such as aluminum, SUS, or PVC can be used as the material.

The material of the rotating magnet 240a and the repulsion magnet 250a used as the split magnet may be a commercially available ferromagnetic material such as an NdFeB sintered magnet, a SmCo sintered magnet, or an NdFeB bonded magnet.

The pair of magnet couplings 200 configured as described above transmit the power to both sides in a noncontact manner by using the attraction force and the repulsive force of the magnet by the inner magnet, thereby rotating the shaft.

That is, when the driving force of the driving motor installed on the conveyor or the like is transmitted to the first magnet gear 210a, the rotating magnet 240a and the shaft 220a connected thereto are rotated and the rotating magnet 240b of the second magnet gear 210b is rotated So that the shaft 220b connected to the shaft 220b is rotated, and eventually the conveyor connected to the shaft 220b is driven.

At this time, the rotating magnets 240a and 240b are arranged to intersect the N-poles and the S-poles of the disk-type coupling coupling to generate a rotation torque while maintaining a constant distance. However, the rotating magnets 240a, (Not shown) supporting the shafts 220a and 220b for a long period of time to generate foreign matter or damage to the bearings due to friction of the bearings.

In order to reduce the attracting force between the rotating magnets 240a and 240b, the repulsion magnets 250a and 250b having the same polarity are arranged to face each other to generate a repulsive force, Thereby reducing the manpower generated in the engine.

When there is no attractive force between the disk type magnetic couplings 200, damage to bearings can be reduced to minimize foreign matter caused by friction and detachment of the rotating magnets 240a and 240b is facilitated.

FIG. 4 is an exploded perspective view of a no-load magnetic coupling according to a second embodiment of the present invention, and FIG. 5 is a sectional view of a no-load first magnetic gear according to a second embodiment of the present invention.

The second embodiment of the present invention shown in Figs. 4 and 5 is similar to the first embodiment except that the rebound magnets 350a and 350b are located outside the rotating magnets 340a and 340b same.

As shown in FIGS. 4 and 5, the no-load magnet coupling 300 according to the second embodiment of the present invention is positioned such that the left and right pairs are opposed to each other in a non-contact manner.

The first magnet gear 310a and the second magnet gear 310b are disposed opposite to each other in a noncontact manner and one end of each of the first and second magnet gears 310a and 310b is connected to the shaft 320a, 320b.

Each of the first and second magnet gears 310a and 310b includes housings 330a and 330b in which rotating magnets 340a and 340b and resilient magnets 350a and 350b can be inserted and fixed, The rotatable magnets 340a and 340b have a donut shape combined with the yokes 341a and 341b and the rebound magnets 350a and 350b that are integrally formed and are positioned outside the rotatable magnets 340a and 340b.

Each of the housings 330a and 330b has a first opening 360a and a second opening 360b through which the rotating magnets 340a and 340b can be inserted and seated and the second openings 360a and 360b, (370a, 370b).

Preferably, the first openings 360a and 260b are formed toward the inner diameters of the housings 330a and 330b and the opening direction is formed in a direction in which the shafts 320a and 320b are located, and the second openings 370a and 370b And the opening direction may be formed in a direction opposite to the opening direction of the first openings 360a and 360b.

The first nonmagnetic member pieces 380a and 380b are covered with the rotating magnets 340a and 340b which are inserted into the first and second openings 360a and 360b and the second magnets 340a and 340b are inserted into the second magnets 350a and 350b, The adult pieces 390a and 390b are covered.

The pair of magnet couplings 300 transmit the power to both sides in a noncontact manner by using the attraction force and the repulsive force of the magnet by the inner magnet, thereby rotating the shaft.

That is, when the driving force of the driving motor provided to the conveyor is transmitted to the first magnet gear 310a, the rotating magnet 340a and the shaft 320a connected thereto are rotated and the rotating magnet 340b of the second magnet gear 310b is rotated The suction force and the repulsive force of the shaft 320b are transmitted and the shaft 320b connected to the shaft 320b is rotated to eventually drive the conveyor connected to the shaft 320b.

In order to reduce the attractive force between the rotating magnets 340a and 340b, the resilient magnets 350a and 350b having the same polarity are arranged to face each other so as to generate a repulsive force, Thereby reducing the manpower generated in the engine.

When there is no attractive force between the disk type magnet couplings 300, it is possible to minimize damage to the bearings and to minimize the occurrence of foreign matter caused by friction, and to easily attach and detach the rotating magnets 340a and 340b.

[Third and fourth aspects of the present invention In the embodiment  No load according to Magnet  Coupling]

6 is a perspective view of a no-load magnetic coupling according to the third and fourth embodiments of the present invention.

6, in the no-load magnetic coupling 400 according to the third and fourth embodiments of the present invention, the first magnet gear 410a and the second magnet gear 410b are opposed to each other in a non- And is connected to shafts 420a and 420b.

FIG. 7 is an exploded perspective view of a no-load magnetic coupling according to a third embodiment of the present invention, and FIG. 8 is a cross-sectional view of a no-load magnetic coupling according to a third embodiment of the present invention.

7 and 8, in the no-load magnet coupling 500 according to the third embodiment of the present invention, a pair of left and right magnet gears 510a and 510b are positioned facing each other in a non-contact manner.

The first and second magnet gears 510a and 510b are disposed opposite to each other in a noncontact manner and one end of each of the first and second magnet gears 510a and 510b is connected to the shaft 520a, 520b.

Each of the first and second magnet gears 510a and 510b includes housings 530a and 530b for allowing rotation magnets 540a and 540b and resilient magnets 550a and 550b to be inserted and fixed therein, 540b having a donut shape coupled with the rotating magnets 541a and 541b and resilient magnets 550a and 550b integrally formed with the rotating magnets 540a and 540b and positioned inside the rotating magnets 540a and 540b, And a holder 580 which is coupled to the housings 530a and 530b while surrounding the resilient magnets 550a and 550b and connected to the shafts 520a and 520b on one side.

The rotating magnets 540a and 540b are formed by coupling a plurality of divided magnets 541a and 541b, and N and S poles are alternately arranged.

The number of poles of the plurality of divided magnets 541a and 541b is preferably selected from six poles, eight poles, ten poles, twelve poles, fourteen poles, or sixteen poles.

Each of the plurality of divided magnets 541a and 541b may have a shape of a fan or trapezoid in cross section, and may have a shape having a long arc on the outer side and a short arc on the inner side.

Each of the divided magnets 541a and 541b is made to have the same size, and the number of the divided magnets 541a and 541b is adjusted so that the outer diameter of the entire magnet can be adjusted. When the outer diameter of the magnet is D and the two divided magnets are taken out to form 10 poles, a magnet having an outer diameter of D1 smaller than the outer diameter D can be formed. Conversely, two divided magnets can be added to form a 14 A magnet having an outer diameter D2 larger than the outer diameter D can be formed.

The resilient magnets 550a and 550b are positioned inside the rotating magnets 540a and 540b and the resilient magnet 550a of the first magnet gear 510a and the resilient magnet 550b of the second magnet gear 510b are positioned inside the rotating magnets 540a and 540b, And are magnetized so as to have the same polarity on the facing surface so as to generate a repulsive force.

Each of the housings 530a and 530b has first openings 560a and 560b that can be seated by inserting the rotating magnets 540a and 540b and second openings 560a and 560b that can receive the resilient magnets 550a and 550b, (570a, 570b).

Referring to FIG. 8, since the first and second magnet gears 510a and 510b have the same internal structure, the first magnet gear 510a will be described with reference to FIG.

The magnet gear 510a is coupled to the rotating magnet 540a on the outer diameter side of the housing 520a and the resilient magnet 550a is coupled on the inner diameter side of the housing 520a.

The housing 520a and the holder 580a serve to secure the rotating magnet 540a and the repulsion magnet 550a while protecting them and a non-magnetic material such as aluminum, SUS, or PVC can be used as the material.

As the material of the rotating magnet 540a and the rebound magnet 550a used as the split magnet, a commercially available ferromagnetic material such as an NdFeB sintered magnet, a SmCo sintered magnet, or an NdFeB bonded magnet can be used.

The pair of magnet couplings 500 configured as described above transmits the power to both sides in a noncontact manner by using the attraction force and the repulsive force of the magnet by the inner magnet, thereby rotating the shaft.

That is, when the driving force of the driving motor installed on the conveyor or the like is transmitted to the first magnet gear 510a, the rotating magnet 540a and the shaft 520a connected thereto are rotated and the rotating magnet 540b of the second magnet gear 510b The suction force and the repulsive force of the shaft 520b are transmitted and the shaft 520b connected to the shaft 520b is rotated, and eventually the conveyor connected to the shaft 520b is driven.

At this time, the rotating magnets 540a and 540b function to generate rotation torque while maintaining a certain distance by arranging the coupling type of the disk type and the N pole and the S pole in an intersecting manner, but the rotating magnets 540a, 520b generate gravitational pulling force between the bearings and cause the bearings (not shown) supporting the shafts 520a, 520b to be damaged by the friction of the bearings or to damage the bearings.

In order to reduce the attractive force between the rotating magnets 540a and 540b, the repulsion magnets 550a and 550b having the same polarity are arranged to face each other so as to generate a repulsive force, Thereby reducing the manpower generated in the engine.

When there is no attractive force between the magnetic coupling 500 of the disk type, it is possible to minimize damage to the bearings and to minimize the generation of foreign matter by friction, and to facilitate detachment and attachment of the rotating magnets 540a and 540b.

FIG. 9 is an exploded perspective view of a no-load magnetic coupling according to a fourth embodiment of the present invention, and FIG. 10 is a sectional view of a no-load first magnetic gear according to a fourth embodiment of the present invention.

The fourth embodiment of the present invention shown in Figs. 9 and 10 is different from the third embodiment in that the rest of the structure is the same as that of the third embodiment except that the rebound magnets 650a and 650b are located outside the rotating magnets 640a and 640b same.

As shown in Figs. 9 and 10, the no-load magnet coupling 600 according to the fourth embodiment of the present invention is positioned such that the left and right pairs are opposed to each other in a non-contact manner.

The first and second magnet gears 610a and 610b are opposed to each other in a noncontact manner and one end of each of the first and second magnet gears 610a and 610b is connected to the shaft 620a, 620b.

Each of the first and second magnet gears 610a and 610b includes housings 630a and 630b for inserting and fixing rotating magnets 640a and 640b and resilient magnets 650a and 650b therein, The rotating magnets 640a and 640b having a donut shape coupled with the rotating magnets 640a and 640b and the resilient magnets 650a and 650b formed integrally with the rotating magnets 640a and 640b and positioned outside the rotating magnets 640a and 640b, And a holder 680 which is coupled to the housings 630a and 630b while surrounding the rebound magnets 650a and 650b and connected to the shafts 620a and 620b on one side.

Each of the housings 630a and 630b has first openings 660a and 660b that can be seated by inserting the rotating magnets 640a and 640b and has second openings 660a and 660b that can be seated by inserting the resilient magnets 650a and 650b. (670a, 670b).

The rotating magnets 640a and 640b serve to generate a rotating torque in the magnet coupling 600. The dividing magnets enable the outer diameter of the magnet coupling 600 to be freely adjusted and the resilient magnets 650a and 650b A repulsive force for reducing the attractive force between the rotating magnets 640a and 640b is generated to reduce bearing damage to minimize foreign matter caused by friction and to facilitate detachment and attachment of the rotating magnets 640a and 640b .

While the present invention has been described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, As will be understood by those skilled in the art. Therefore, it should be understood that the above-described embodiments are to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than the foregoing description, It is intended that all changes and modifications derived from the equivalent concept be included within the scope of the present invention.

100, 200, 300, 400, 500, 600: Magnet coupling
110a, 210a, 310a, 410a, 510a, 610a: a first magnet gear
110b, 210b, 310b, 410b, 510b, 610b: a second magnet gear
120a, 120b, 220a, 220b, 320a, 320b, 420a, 420b, 520a, 520b, 620a,
The housing may include at least one of a first housing, a second housing, a second housing, and a second housing.
240a, 240b, 340a, 340b, 440a, 440b, 540a, 540b, 640a, 640b:
250a, 250b, 350a, 350b, 450a, 450b, 550a, 550b, 650a, 650b:
260a, 260b, 360a, 360b, 460a, 460b, 560a, 560b, 660a, 660b:
270a, 270b, 370a, 370b, 470a, 470b, 570a, 570b, 670a, 670b:
280a, 280b, 380a, and 380b:
290a, 290b, 390a, 390b: a second non-personal character
580: Holder

Claims (6)

A first magnet gear and a second magnet gear opposed to each other in a noncontact manner,
Wherein each of the first and second magnet gears includes:
A rotating magnet having a donut shape in which a plurality of divided magnets are magnetically coupled to N and S poles alternately;
A counter electromagnet having a donut shape located on the inside or outside of the rotating magnet and facing each other in the same polarity;
And a housing to which the rotating magnet and the repulsive magnet are inserted and the shaft is coupled to the conveyor on one side,
Wherein the housing has a first opening through which the rotating magnet is inserted and a second opening through which the repulsion magnet is inserted,
And the opening directions of the first opening and the second opening are opposite directions. delete The method according to claim 1,
Wherein a first nonmagnetic piece of a donut shape is covered on the rotating magnet inserted and seated in the first opening and the second opening, and the rebound magnet is covered with a donut-shaped second nonmagnetic piece. delete The method according to claim 1,
Wherein the rotary magnet has a trapezoidal cross section or a fan shape having an outer long arc and an inner short arc. The method according to claim 1,
Wherein the first and second magnet gears are a combination of six-pole, eight-pole, ten-pole, twelve-pole, fourteen-pole and sixteen pole split magnets.

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