KR102661489B1 - Pole piece assembly, method for manufacturing the same and magnetic gear having the same - Google Patents

Abstract

The present invention relates to magnetic gears, and more specifically, to a pole piece unit for a magnetic gear driven using magnetism, a manufacturing method thereof, and a magnetic gear equipped therewith.
The present invention includes an inner magnetic flux portion (10) in which a plurality of first permanent magnets (11) are coupled to the outer peripheral surface and rotatably installed, and an outer magnetic flux portion (10) that is rotatably installed in which a plurality of first permanent magnets (31) are coupled to the inner peripheral surface ( 30) and a pole piece unit located between the outer peripheral surface of the inner magnetic flux portion 10 and the inner peripheral surface of the outer magnetic flux portion 30 to adjust the magnetic flux, wherein the inner magnetic flux portion ( 10) an inner skin portion 110 installed at a preset gap from the outer peripheral surface of the cell; A plurality of pole piece members 120, which are magnetic materials, are attached to the outer peripheral surface of the inner skin 110 at regular intervals along the circumferential direction; Disclosed is a pole piece unit of a magnetic gear, which is coupled to the inner skin 110 and includes a gap maintaining means for maintaining a constant gap between adjacent pole piece members 120.

Description

Pole piece unit for magnetic gear, manufacturing method thereof, and magnetic gear equipped with the same {Pole piece assembly, method for manufacturing the same and magnetic gear having the same}

The present invention relates to magnetic gears, and more specifically, to a pole piece unit for a magnetic gear driven using magnetism, a manufacturing method thereof, and a magnetic gear equipped therewith.

In general, a magnetic gear is a non-contact gear device that transmits power in a non-contact manner using magnetic force, unlike contact gears that transmit power through physical contact. It has less noise and vibration, which are disadvantages of contact gears, and does not require lubricant injection or injection. It is a gear device that requires no maintenance and has excellent stability and durability as there is no mechanical friction.

Furthermore, magnetic gears are a gear device that can reduce energy loss, enable high-efficiency driving compared to contact gears, and enable accurate transmission of peak torque.

In addition, the conventional magnetic gear can be configured in various ways as long as it uses a magnetic method. As an example, as disclosed in Patent Document 1, the inner rotor and the outer rotor to which permanent magnets are coupled, and the magnetic material are installed at regular intervals. It may be configured to include a pole piece unit that is located between the inner rotor and the outer rotor and controls the magnetic flux to induce rotation of the other through rotation according to the input rotation of either the inner rotor or the outer rotor.

Specifically, the conventional magnetic gear, as shown in the conceptual diagrams of FIGS. 1 and 2, magnetic flux through each permanent magnet 11 and 31 according to the relative rotation between the inner rotor 10 and the outer rotor 30. It is a device that outputs power adjusted to the desired rotation speed ratio compared to the input through change induction, and adjusts the magnetic flux between the inner rotor (10) and the outer rotor (30) and the inner rotor (10) and the outer magnetic flux portion (30). To this end, it may include a pole piece unit 20 that is fixedly installed between the inner rotor 20 and the outer rotor 30.

Here, the inner magnetic flux portion 10 includes a plurality of pole piece units 20 in which N poles and S poles are alternately arranged and is rotatably installed.

And the outer rotor 30 includes a plurality of second permanent magnets 31 in which a preset number of N poles and S poles are alternately arranged in consideration of the rotation ratio with the inner magnetic flux portion 10, and is installed to be rotatable. do.

The pole piece unit 20 is fixedly installed between the inner rotor 20 and the outer rotor 30 to adjust the magnetic flux between the inner rotor 10 and the outer magnetic flux portion 30.

In particular, the pole piece unit 20 can achieve precise torque output only by maintaining a certain distance initially set between the inner rotor 10 and the outer rotor 30 even in a use environment such as high-speed rotation and heat generation due to rotation. You can.

However, in the case of the conventional pole piece unit, there was a problem in that the spacing between magnetic materials changed depending on the influence of the usage environment or the pole piece unit deviated from the initial installation position.

In addition, eddy currents are generated depending on the material from which the conventional pole piece unit is manufactured, and there is a problem in that it is difficult to avoid the resulting eddy current losses.

In order to solve this problem, as in Patent Document 1, an invention has been disclosed that suppresses eddy current loss by configuring the number of plural connecting rods of the holding member as a divisor of the number of magnetic pole pairs of the rotor. However, in this case as well, the pole There was a problem in that the weight of the piece unit increased and its strength decreased.

(Patent Document 1) KR10-1457523 B1

The purpose of the present invention is to provide a lightweight, high-strength, and stable pole piece unit for magnetic gears while maintaining the original installation state, a method of manufacturing the same, and a magnetic gear equipped with the same, in order to solve the above problems.

The present invention was created to achieve the object of the present invention as described above, and includes an inner magnetic flux portion 10 in which a plurality of first permanent magnets 11 are coupled to the outer peripheral surface, and an inner magnetic flux portion 10 coaxial with the inner magnetic flux portion 10. A pole is located between the outer magnetic flux part 30, in which a plurality of permanent magnets 31 are coupled to the inner peripheral surface, and the outer peripheral surface of the inner magnetic flux part 10, and the inner peripheral surface of the outer magnetic flux part 30, and controls the magnetic flux. In the pole piece unit of the magnetic gear including the piece unit 20, the inner skin part 110 made of CFRP is installed at a preset gap from the outer peripheral surface of the inner magnetic flux part 10; A plurality of pole piece members 120 made of a magnetic material and installed at regular intervals along the circumferential direction on the outer peripheral surface of the inner skin 110; A plurality of non-magnetic members 130 made of a non-magnetic material that maintain the gap between the pole piece members 120 and adjacent pole piece members 120; It includes an outer skin portion 140 formed on the outer peripheral surface formed by the plurality of pole piece members 120 and the plurality of non-magnetic members 130 to form the outer peripheral surface of the pole piece unit 20. A characteristic magnetic gear pole piece unit is disclosed.

At least one end of both ends of the pole piece unit 20 is provided with an end ring 430 made of a non-magnetic material for fixing the plurality of pole piece members 120 and the non-magnetic members 130. It may be coupled to the end of at least one of the piece members 120 and the non-magnetic members 130.

At least one of the inner skin 110 and the outer skin 140 may be formed by wrapping a carbon sheet around a cylinder jig 900 having a preset outer diameter.

The outer skin portion 140 may be formed by installing the plurality of pole piece members 120 and the non-magnetic members 130 on the outer peripheral surface of the inner skin portion 110, then wrapping a carbon sheet and impregnating it with resin.

After forming the outer skin portion 140, the inner skin portion 110, the plurality of pole piece members 120, the non-magnetic members 130, and the outer skin portion 140 can be integrated through heating.

The present invention also includes an inner magnetic flux portion (10) in which a plurality of first permanent magnets (11) are coupled to the outer peripheral surface; an outer magnetic flux portion (30) coaxial with the inner magnetic flux portion (10) and having a plurality of permanent magnets (31) coupled to its inner peripheral surface; A magnetic gear including a pole piece unit (20) located between the outer peripheral surface of the inner magnetic flux portion (10) and the inner peripheral surface of the outer magnetic flux portion (30) to control magnetic flux, wherein the pole piece unit (20) is Disclosed is a magnetic gear characterized in that it is a pole piece unit (20) having the following configuration.

The present invention is also a method of manufacturing a pole piece unit of a magnetic gear having the above configuration, comprising the steps of forming an inner skin 110 made of CFRP by wrapping a carbon sheet around a cylinder jig 900 having a preset outer diameter; ; A magnetic member/non-magnetic member installation step of alternately installing the pole piece member 120 made of the magnetic material and the non-magnetic member 130 made of the non-magnetic material along the circumferential direction on the outer surface of the inner skin 110; Forming an outer skin 140 that forms the outer peripheral surface of the pole piece unit 20 on the outer peripheral surface formed by the plurality of pole piece members 120 and the plurality of non-magnetic members 130. Disclosed is a method of manufacturing a pole piece unit comprising the following steps:

An end ring 430 made of a non-magnetic material for fixing the plurality of pole piece members 120 and the non-magnetic members 130 is provided at at least one end of the pole piece unit 20. The end ring coupling step coupled to the end of at least one of the members 120 and the non-magnetic members 130 may be performed before, after, or simultaneously with the magnetic member/non-magnetic member installation step.

In the outer skin forming step, the outer skin portion 140 can be formed by wrapping a carbon sheet around a cylinder jig having a preset outer diameter.

After forming the outer skin portion 140, the inner skin portion 110, the plurality of pole piece members 120, the non-magnetic members 130, and the outer skin portion 140 can be integrated through heating.

In the outer skin forming step, the plurality of pole piece members 120 and the non-magnetic members 130 are installed on the outer peripheral surface of the inner skin portion 110, and then a carbon sheet is wound and impregnated with resin to form the outer skin portion 140. can be formed.

The pole piece unit for magnetic gear according to the present invention, its manufacturing method, and the magnetic gear equipped therewith are, unlike mechanical gears, non-contact gears, so precise speed control is possible, noise and vibration are low, and lubricant injection or maintenance inspection is possible. This has the advantage of excellent stability and durability as there is no unnecessary mechanical friction.

In addition, the pole piece unit for magnetic gears according to the present invention, the manufacturing method thereof, and the magnetic gear equipped with the same are equipped with gap maintaining means to maintain a constant gap between the magnetic materials of the pole pieces, enabling precise and stable gear driving. There is an advantage.

Furthermore, the pole piece unit for magnetic gear according to the present invention, its manufacturing method, and the magnetic gear equipped with the same have the advantage of being light in weight, good in response, and excellent in strength by using CFRP.

Unlike conventional magnetic gears and pole piece units, the pole piece unit for magnetic gears according to the present invention, its manufacturing method, and the magnetic gear equipped therewith have the advantage of reducing eddy current loss and enabling highly efficient gear operation.

The pole piece unit for magnetic gear, the manufacturing method thereof, and the magnetic gear equipped with the same according to the present invention enable the manufacture of a precise and highly durable pole piece unit and magnetic gear through a relatively simple manufacturing method, which has the advantage of excellent economic efficiency. There is.

Figure 1 is a side view showing a conventional magnetic gear.
Figure 2 is an exploded perspective view showing the configuration of the magnetic gear of Figure 1.
Figure 3 is a partially cut away perspective view showing the magnetic gear according to the present invention.
Figure 4 is a perspective view showing the pole piece of the magnetic gear of Figure 3.
Figure 5 is a plan view of the pole piece unit of Figure 4.
Figures 6a to 6c are perspective views showing the manufacturing process of the pole piece unit of Figures 4 and 5.
Figure 7 is a perspective view showing a modified outer skin forming step during the manufacturing process of the pole piece unit shown in Figures 6a to 6c.

Hereinafter, the pole piece unit for magnetic gear according to the present invention, its manufacturing method, and the magnetic gear equipped with the same will be described in detail with reference to the attached drawings.

As shown in FIG. 3, the magnetic gear according to the present invention has an inner magnetic flux portion 10 in which a plurality of first permanent magnets 11 are coupled to the outer peripheral surface, and an inner magnetic flux portion 10 that is coaxial with the inner magnetic flux portion 10 and has an inner magnetic flux portion 10 on the inner peripheral surface. A pole piece unit (20) located between the outer magnetic flux portion 30 to which a plurality of second permanent magnets 31 are coupled, the outer peripheral surface of the inner magnetic flux portion 10, and the inner peripheral surface of the outer magnetic flux portion 30 to control the magnetic flux. ) includes.

The inner magnetic flux portion 10 is a configuration in which a plurality of first permanent magnets 11 are coupled to the outer peripheral surface, and various configurations are possible depending on the rotation or fixed structure.

For example, the inner magnetic flux portion 10 is a rotatably installed structure, and is coupled to the inner core portion 12, where a plurality of pole piece units 20 are coupled to the outer peripheral surface, and the inner core portion 12. It may include an inner shaft 42 that receives rotation from the outside.

The inner core portion 12 is a structure in which a plurality of first permanent magnets 11 are coupled to the outer circumferential surface, and rotation is input or output from the outside through the inner shaft to which it is coupled, and various configurations are possible.

The inner core portion 12 is hollow so that the inner shaft 42 can be connected to the inner shaft 42 through it in the longitudinal direction, and a plurality of first permanent magnets 11 can be coupled to the outer peripheral surface.

Through this, the inner core portion 12 is connected to the outer magnetic flux portion 30 by the magnetic force acting through the plurality of second permanent magnets 31 and the pole piece unit 20 installed in the outer magnetic flux portion 30. It can be rotated or rotated by the outer magnetic flux unit 30.

And the inner core portion 12 can be made of a material such as metal or CFRP.

Here, the rotation ratio between the inner magnetic flux portion 10 and the outer magnetic flux portion described later varies depending on the size and installation number of the permanent magnets 11 and 31.

The first permanent magnet 11 is coupled to the outer peripheral surface of the inner core portion 12 and generates magnetic force through a plurality of second permanent magnets 31 installed in the outer magnetic flux portion 30 and the pole piece unit 20. As an interacting member, various configurations are possible.

For example, the first permanent magnet 11 may have a plurality of N poles and S poles alternately arranged on the outer peripheral surface of the inner core portion 12, and the outer magnetic flux portion 30 and the inner magnetic flux portion Considering the rotation ratio of (10), it can be arranged with a preset number and circumferential length.

In addition, the plurality of first permanent magnets 11 may be arranged at equal intervals, and more preferably, may be arranged and combined to have the same area along the outer peripheral surface of the inner core portion 12.

The inner shaft 42 penetrates the hollow formed in the inner core portion 12 and is coupled to the inner core portion 12 to transmit the power of the inner core portion 12 to the outside. It has various configurations. possible.

For example, the inner shaft 42 penetrates the hollow formed in the inner core portion 12 and is coupled to the inner core portion 12. When power is input to the inner magnetic flux portion 10, the inner shaft 42 Power transmitted from a power source externally coupled to the shaft 42 can be transmitted to the inner core portion 12.

Conversely, the inner shaft 42 can be rotated by rotational force input by the outer shaft 41, which will be described later.

Meanwhile, the inner magnetic flux portion 10 has been described with reference to an embodiment in which it is rotatably installed, but of course it can be configured in a fixed state depending on the rotation combination.

The outer magnetic flux portion 30 is a configuration in which a plurality of second permanent magnets 31 are coupled to the inner peripheral surface, and various configurations are possible depending on the rotation or fixed structure.

For example, in an embodiment in which the outer magnetic flux portion 30 is rotatably installed, the rotation ratio with the inner magnetic flux portion 10 - when the pole piece unit 20 is rotated, the rotation ratio with the pole piece unit 20 - It includes a plurality of second permanent magnets 31 in which a preset number of N poles and S poles are alternately arranged in consideration of , and is installed to be rotatable, and various configurations are possible.

For example, the outer magnetic flux portion 30 has a plurality of second permanent magnets 31 coupled to the inner peripheral surface, and is coupled to the outer core portion 32, which is rotatably installed, and the outer core portion 32. It may include an outer shaft 41 that outputs or receives rotation to the outside.

The outer core portion 32 is installed to be rotatable and inputs or outputs rotation through the outer shaft 41 to which it is coupled, and various configurations are possible.

For example, the outer core portion 32 has a plurality of second permanent magnets 31 coupled to the inner peripheral surface corresponding to the pole piece unit 20, and an outer shaft 41 on at least one of both sides in the longitudinal direction. ) are combined.

More specifically, the outer core portion 32 has a plurality of second permanent magnets 31 installed on its inner peripheral surface, and a concentric pole piece unit 20 and an inner magnetic flux portion 10 are installed inside the outer core portion 32. It is desirable to have a cylindrical shape so that

Meanwhile, the outer core portion 32 can be made of a material such as metal or CFRP.

The plurality of second permanent magnets 31 are coupled to the inner peripheral surface of the outer core portion 32 and induce magnetic flux changes according to relative rotation through the plurality of first permanent magnets 11 and the pole piece unit 20. As a configuration, various configurations are possible.

For example, the plurality of second permanent magnets 31 may have a plurality of N poles and S poles alternately arranged on the inner peripheral surface of the outer core portion 32, and the outer magnetic flux portion 30 and the inner Considering the rotation ratio of the magnetic flux portion 10, it can be arranged with a preset number and circumferential length.

In addition, the plurality of second permanent magnets 31 may be arranged at regular intervals along the circumferential direction, and more preferably, may be arranged and combined to have a constant area along the inner peripheral surface of the outer core portion 32. there is.

The outer shaft 41 is coupled to at least one of the two sides based on the longitudinal direction of the outer core portion 32 and transmits rotational force to the outside according to the mutual magnetic flux change of the inner magnetic flux portion 10 and the outer rotor portion 20. Various configurations are possible by outputting or inputting rotational force to the inner magnetic flux unit 10.

Meanwhile, the magnetic gear according to the present invention may include a housing 43 that allows the inner magnetic flux portion 10, the pole piece unit 20, and the outer magnetic flux portion 30 to be stably installed.

The housing 43 is configured to have an inner magnetic flux portion 10, a pole piece unit 20, and an outer magnetic flux portion 30 installed therein, and various configurations are possible.

For example, the housing 43 may have a cylindrical shape with one end open, and the open portion may include a cover member 44 covering the open portion.

The cover member 44 is a member that covers the open portion of the housing 43, and can be coupled to the housing 43 with a bolt or the like.

Meanwhile, the cover member 44 has a first through hole formed in the center so that the inner shaft 42 is exposed to the outside, and the housing 43 has an outer shaft 41 on the opposite side from the part where the cover member is coupled to the outside. A second through hole may be formed in the center to be exposed.

In addition, in the housing 43 and the cover member 44, a plurality of bearings 81, 82, 83, and 84 are installed at appropriate locations for smooth rotation of the inner magnetic flux portion 10 and the outer magnetic flux portion 30. You can.

Meanwhile, in the housing 43, a pole piece unit 20, which will be described later, can be installed fixedly or rotatably.

Hereinafter, the pole piece unit 20 according to the present invention will be described.

The pole piece unit 20 according to the present invention is located between the outer peripheral surface of the inner magnetic flux portion 10 and the inner peripheral surface of the outer magnetic flux portion 30 to control magnetic flux, and various configurations are possible.

Specifically, the pole piece unit 20 according to the present invention, as shown in FIGS. 3 to 7, includes an inner skin portion 110 made of CFRP material that is installed at a preset gap from the outer peripheral surface of the inner magnetic flux portion 10, and ; A plurality of pole piece members 120 made of a magnetic material and installed at regular intervals along the circumferential direction on the outer peripheral surface of the inner skin 110; A plurality of non-magnetic members 130 made of a non-magnetic material that maintain the gap between the pole piece members 120 and adjacent pole piece members 120; It includes an outer skin portion 140 formed on the outer peripheral surface formed by the plurality of pole piece members 120 and the plurality of non-magnetic members 130 to form the outer peripheral surface of the pole piece unit 20.

The inner skin portion 110 is installed with a preset gap from the outer peripheral surface of the inner magnetic flux portion 10, and a plurality of pole piece members 120 made of a magnetic material are combined to support the pole piece members 120, Various configurations are possible.

For example, the inner skin portion 110 may have a hollow cylindrical structure so that the inner magnetic flux portion 10 can be inserted and installed with a preset gap.

The inner skin 110 is preferably made of a non-magnetic material, and may be made of a material such as engineering plastic such as SUS or PEEK, or CFRP.

In particular, the inner skin 110 is preferably made of CFRP material to minimize eddy current loss and to be lightweight and have high strength.

At this time, the inner skin 110 can be formed by wrapping a carbon sheet around a cylinder jig 900 and impregnating it with resin using a manufacturing method described later.

The plurality of pole piece members 120 are magnetic materials installed at regular intervals along the circumferential direction on the outer peripheral surface of the inner skin 110, and various configurations are possible.

For example, the plurality of pole piece members 120 may be installed on the outer peripheral surface of the inner skin 110 at regular intervals along the circumferential direction, and the outer permanent magnet 31 and the pole piece unit 20 may be installed. A preset number of pole piece members 120 may be installed depending on the number.

Meanwhile, the pole piece member 120 has a length corresponding to the longitudinal direction of the inner skin 110 in order to induce a smooth mutual magnetic flux change between the pole piece unit 20 and the outer permanent magnet 31, and the inner skin ( 110) may have a structure in which a plurality of electrical steel sheets are stacked in the longitudinal direction.

The plurality of non-magnetic members 130 are made of a non-magnetic material and are configured to maintain the gap between adjacent pole piece members 120, and various configurations are possible.

For example, the non-magnetic member 130 is installed in the space between adjacent pole piece members 120 to maintain the position and shape of the pole piece members 120, and various configurations are possible. .

The non-magnetic member 130 may preferably be made of a material such as epoxy or engineering plastic such as PEEK.

Meanwhile, at least one end of both ends of the pole piece unit 20 may be coupled with an end ring 430 made of a non-magnetic material for fixing the plurality of pole piece members 120 and the non-magnetic members 130.

The end ring 430 is a component that is coupled to at least one of both ends of the pole piece unit 20 in order to fix the plurality of pole piece members 120 and the non-magnetic member 130, and includes the inner skin 110 and It is preferable that the outer skin portion 120 is formed in a circular ring shape extending from the cylindrical shape.

The end ring 430 may be made of various materials such as engineering plastic, SUS, and CFRP, and is preferably made of engineering plastic such as PEEK.

Meanwhile, at least one of the plurality of pole piece members 120 and the non-magnetic members 130, preferably the non-magnetic member 130, has a coupling hole at its end for screw coupling with the end ring 430. 131) can be formed.

Specifically, the pole piece members 120 have a structure in which electrical steel sheets are laminated, so it is difficult to form holes, so a coupling hole 131 is provided at the ends of the non-magnetic members 130 for screw coupling with the end ring 430. It is desirable to form

The outer skin portion 140 is formed on the outer peripheral surface formed by the plurality of pole piece members 120 and the plurality of non-magnetic members 130 to form the outer peripheral surface of the pole piece unit 20, and has various configurations. This is possible.

In addition, the material of the outer skin 140 is preferably a non-magnetic material, and may be made of engineering plastic such as SUS or PEEK, or CFRP.

Here, the outer skin portion 140 is preferably made of CFRP material to minimize eddy current loss and to be lightweight and have high strength.

In particular, the outer skin 140 made of CFRP material can be formed by wrapping a carbon sheet around a cylinder jig having a preset outer diameter.

At this time, the outer skin portion 140 may be formed by installing a plurality of pole piece members 120 and non-magnetic members 130 on the outer peripheral surface of the inner skin portion 110, then wrapping a carbon sheet and impregnating it with resin.

Meanwhile, after forming the outer skin portion 140, the inner skin portion 110, the plurality of pole piece members 120, the non-magnetic members 130, and the outer skin portion 140 can be integrated through heating.

That is, the inner skin 110 and the outer skin 140 formed by impregnating the resin are heated to form the inner skin 110, the plurality of pole piece members 120, the non-magnetic members 130, and the outer skin 140. can be combined more firmly.

Meanwhile, the pole piece unit 20 having the above configuration can be rotatably installed or fixed in a rotation/fixation combination with the inner magnetic flux portion 10 and the outer magnetic flux portion 20.

For example, when the pole piece unit 20 is fixed as shown in FIG. 3, an end ring 410 is coupled to one end and a cover to the other end so that it can be directly or indirectly fixedly coupled to the housing 43. The base member 810 coupled to the member 44 may be coupled.

At this time, at least one of the plurality of pole piece members 120 and the non-magnetic members 130, preferably the non-magnetic member 130, is screwed at the end by a base member 810 and a coupling screw 812. A coupling hole 131 may be formed.

The base member 810 is preferably made of a non-magnetic metal material with high structural rigidity, considering its combination with the housing 43, such as aluminum or aluminum alloy.

Meanwhile, the pole piece unit 20 having the above-described configuration needs to maintain sturdiness when used after manufacturing and improve productivity.

Accordingly, it is a very important factor in the productivity of the manufacturing method of the pole piece unit 20 having the above configuration.

Accordingly, the present invention is a method of manufacturing a pole piece unit 20 having the above-mentioned configuration, which includes an inner skin forming step of forming an inner skin 110 made of CFRP material by wrapping a carbon sheet around a cylinder jig 900 having a preset outer diameter. and; A magnetic member/non-magnetic member installation step of alternately installing pole piece members 120 made of a magnetic material and non-magnetic members 130 made of a non-magnetic material along the circumferential direction on the outer surface of the inner skin 110; Includes an outer skin forming step of forming an outer skin portion 140 that forms the outer peripheral surface of the pole piece unit 20 on the outer peripheral surface formed by a plurality of pole piece members 120 and a plurality of non-magnetic members 130. do.

The inner skin forming step is a step of forming the inner skin 110 made of CFRP by wrapping a carbon sheet around a cylinder jig 900 having a preset outer diameter, and can be performed by various methods.

Here, the cylinder jig 900 forms the inner peripheral surface of the pole piece unit 20, where the inner peripheral surface of the inner skin portion 110 is installed at regular intervals from the outer peripheral surface of the inner magnetic flux portion 10, as shown in FIG. 6A. It may be made of a cylinder or a cylindrical cylinder having an outer diameter corresponding to the inner diameter of the inner skin portion 110, which was designed in advance.

At this time, the inner skin 110 may be formed by installing on the outer peripheral surface of the cylinder jig 900, then wrapping a carbon sheet and impregnating it with resin.

And after forming the inner skin 110, the inner skin 110 can be formed more firmly through heating.

In the magnetic member/non-magnetic member installation step, as shown in FIG. 6b, a pole piece member 120 made of a magnetic material and a non-magnetic member 130 made of a non-magnetic material are installed along the circumferential direction on the outer surface of the inner skin 110. This step of alternately installing the pole piece member 120 and the non-magnetic member 130 can be performed by various methods.

Meanwhile, when the end ring 430 is coupled to at least one end of the pole piece member 120 and the non-magnetic member 130, the pole piece member 120 and the non-magnetic member 130 are attached to the end ring 430. After combining, the end ring 430 can be installed at the same time in addition to the pole piece member 120 and the non-magnetic member 130 by inserting it into the cylinder jig 900 on which the inner skin 110 is formed.

And in relation to the installation of the end ring 430, a non-magnetic material for fixing the plurality of pole piece members 120 and the plurality of non-magnetic members 130 to at least one end of the pole piece unit 20. The end ring coupling step in which the end ring 430 is coupled to at least one end of the plurality of pole piece members 120 and the non-magnetic member 130 is performed before and after performing the magnetic member/non-magnetic member installation step. Or, it can be performed simultaneously with performance.

In the outer skin forming step, as shown in FIG. 6C, the outer peripheral surface of the pole piece unit 20 is formed on the outer peripheral surface formed by the plurality of pole piece members 120 and the plurality of non-magnetic members 130. This step of forming the outer skin 140 can be performed by various methods.

For example, in the outer skin forming step, the outer skin 140 is formed by winding a carbon sheet around a cylinder jig having a preset outer diameter, and then the outer skin 140 is formed using a plurality of pole piece members 120 and a plurality of visas. It can be installed on the outer peripheral surface formed by the castle members 130.

The cylinder jig for forming the outer skin has a similar configuration to the cylinder jig 900 for forming the inner skin 110, and the outer peripheral surface of the outer skin 140 is a pole piece installed at regular intervals from the inner peripheral surface of the outer magnetic flux portion 20. It forms the outer peripheral surface of the unit 20 and corresponds to the inner diameter of the outer skin portion 140, which was designed in advance considering that it is installed on the outer peripheral surface formed by the plurality of pole piece members 120 and the plurality of non-magnetic members 130. It may be made of a cylinder or a cylindrical cylinder having an outer diameter.

At this time, the outer skin 140 can be formed by installing it on the outer peripheral surface of a cylinder jig, wrapping a carbon sheet, and impregnating it with a resin.

And after forming the outer skin 140, the outer skin 140 can be formed more robustly through heating.

As another example, in the outer skin forming step, a plurality of pole piece members 120 and non-magnetic members 130 are installed on the outer peripheral surface of the inner skin portion 110, and then a carbon sheet is wound and impregnated with resin to form the outer skin portion 140. can be formed.

Meanwhile, after forming the outer skin portion 140, it is preferable to integrate the inner skin portion 110, the plurality of pole piece members 120, the non-magnetic members 130, and the outer skin portion 140 through heating.

Additionally, in forming the inner skin portion 110 and the outer skin portion 140, the carbon sheet may be wound in various patterns.

For example, in the cylindrical shape forming the inner skin 110 and the outer skin 140, 1) a first pattern in which the carbon sheet is arranged parallel to the longitudinal direction of the cylindrical shape, 2) the longitudinal direction and inclination of the carbon sheet , that is, the cylindrical inner skin portion 110 and the outer skin portion 140 are formed by a combination of at least one of the second pattern arranged diagonally, and 3) the third pattern in which at least a portion of the carbon sheet is perpendicular to the longitudinal direction of the cylindrical shape. can be formed.

Meanwhile, through the end ring coupling step, at least one of the end ring 430 and the base member 810 is coupled to the inner skin 110, the plurality of pole piece members 120, and the plurality of non-magnetic members 130. Then, the cylinder jig 900 is not necessarily needed in the outer skin forming step.

Accordingly, as shown in FIG. 7, the outer skin forming step is performed on a plurality of pole piece members 120 and a plurality of non-magnetic members 130 in a state in which the cylinder jig 900 is removed after the end ring coupling step. This is a step of forming the outer skin portion 140 that forms the outer peripheral surface of the pole piece unit 20 on the outer peripheral surface formed by the process. This step can be performed by various methods.

Here, the process of forming the outer skin 140 can be performed through the process described above except that the cylinder jig 900 is removed.

Meanwhile, when the inner skin portion 110 and the outer skin portion 140 are made of CFRP material, it is preferable that at least a portion of the inner peripheral surface and the outer peripheral surface be processed to form a precise surface by cutting to improve precision.

The above is only a description of some of the preferred embodiments that can be implemented by the present invention, and therefore, as is well known, the scope of the present invention should not be construed as limited to the above embodiments, and the scope of the present invention as described above should not be construed. Both the technical idea and the technical idea underlying it will be said to be included in the scope of the present invention.

10: inner magnetic flux part 20: pole piece unit
30: External magnetic flux part
110: inner skin 120: pole piece member
130: non-magnetic member 140: outer skin

Claims (12)

An inner magnetic flux portion 10 to which a plurality of first permanent magnets 11 are coupled to the outer peripheral surface, and an outer magnetic flux portion 30 to which a plurality of permanent magnets 31 are coupled to the inner peripheral surface and coaxial with the inner magnetic flux portion 10. ) and a pole piece unit 20 located between the outer peripheral surface of the inner magnetic flux portion 10 and the inner peripheral surface of the outer magnetic flux portion 30 to adjust the magnetic flux. In the pole piece unit of the magnetic gear,
an inner skin part 110 made of CFRP installed at a preset gap from the outer peripheral surface of the inner magnetic flux part 10;
A plurality of pole piece members 120 made of a magnetic material and installed at regular intervals along the circumferential direction on the outer peripheral surface of the inner skin 110;
A plurality of non-magnetic members 130 made of a non-magnetic material that maintain the gap between the pole piece members 120 and adjacent pole piece members 120;
It includes an outer skin portion 140 formed on an outer peripheral surface formed by the plurality of pole piece members 120 and the plurality of non-magnetic members 130 to form an outer peripheral surface of the pole piece unit 20,
The inner skin 110 is formed by wrapping a carbon sheet around a cylinder jig 900 having a preset outer diameter,
The outer skin 140 is formed by winding a carbon sheet,
With the inner skin 110 coupled to the jig 900, the pole piece members 120 and the non-magnetic members 130 are alternately installed along the circumferential direction on the outer surface of the inner skin 110. Featured pole piece unit. In claim 1,
At least one end of the pole piece unit 20,
An end ring 430 made of a non-magnetic material for fixing the plurality of pole piece members 120 and the non-magnetic members 130 is connected to the plurality of pole piece members 120 and the non-magnetic members 130. A pole piece unit characterized in that it is coupled to at least one end of the pole piece unit. delete In claim 1,
The outer skin portion 140 is formed by installing the plurality of pole piece members 120 and the non-magnetic member 130 on the outer peripheral surface of the inner skin portion 110, then winding the carbon sheet and impregnating the resin. Pole piece unit. In claim 4,
After forming the outer skin portion 140, the inner skin portion 110, the plurality of pole piece members 120, the non-magnetic members 130, and the outer skin portion 140 are integrated through heating. Pole piece unit. an inner magnetic flux portion (10) to which a plurality of first permanent magnets (11) are coupled to the outer peripheral surface;
an outer magnetic flux portion (30) coaxial with the inner magnetic flux portion (10) and having a plurality of permanent magnets (31) coupled to its inner peripheral surface;
A magnetic gear including a pole piece unit (20) located between the outer peripheral surface of the inner magnetic flux portion (10) and the inner peripheral surface of the outer magnetic flux portion (30) to control magnetic flux,
The pole piece unit (20) is a magnetic gear, characterized in that it is the pole piece unit (20) according to any one of claims 1, 2, and 4. an inner magnetic flux portion (10) to which a plurality of first permanent magnets (11) are coupled to the outer peripheral surface;
an outer magnetic flux portion (30) coaxial with the inner magnetic flux portion (10) and having a plurality of permanent magnets (31) coupled to its inner peripheral surface;
A magnetic gear including a pole piece unit (20) located between the outer peripheral surface of the inner magnetic flux portion (10) and the inner peripheral surface of the outer magnetic flux portion (30) to control magnetic flux,
The pole piece unit 20 is the pole piece unit 20 according to claim 4,
After combining the outer skin portion 140, the inner skin portion 110, the plurality of pole piece members 120, the non-magnetic members 130, and the outer skin portion 140 are integrated. Magnetic gear that does. An inner magnetic flux portion 10 to which a plurality of first permanent magnets 11 are coupled to the outer peripheral surface, and an outer magnetic flux portion 30 to which a plurality of permanent magnets 31 are coupled to the inner peripheral surface and coaxial with the inner magnetic flux portion 10. ) and a pole piece unit 20 located between the outer peripheral surface of the inner magnetic flux portion 10 and the inner peripheral surface of the outer magnetic flux portion 30 to adjust the magnetic flux. In the pole piece unit of the magnetic gear,
an inner skin part 110 made of CFRP installed at a preset gap from the outer peripheral surface of the inner magnetic flux part 10;
A plurality of pole piece members 120 made of a magnetic material and installed at regular intervals along the circumferential direction on the outer peripheral surface of the inner skin 110;
A plurality of non-magnetic members 130 made of a non-magnetic material that maintain the gap between the pole piece members 120 and adjacent pole piece members 120;
It includes an outer skin portion 140 formed on the outer peripheral surface formed by the plurality of pole piece members 120 and the plurality of non-magnetic members 130 to form the outer peripheral surface of the pole piece unit 20. A method of manufacturing a pole piece unit of a magnetic gear characterized by:
An inner skin forming step of forming an inner skin 110 made of CFRP by wrapping a carbon sheet around a cylinder jig 900 having a preset outer diameter;
With the inner skin 110 formed in the jig 900, the pole piece member 120 made of the magnetic material and the non-magnetic member 130 made of the non-magnetic material are placed along the circumferential direction on the outer surface of the inner skin 110. A magnetic member/non-magnetic member installation step of installing alternately;
The outer peripheral surface of the pole piece unit 20 is formed on the outer peripheral surface formed by the plurality of pole piece members 120 and the plurality of non-magnetic members 130 in the state of being coupled to the jig 900. It includes an outer skin formation step to form the skin 140,
A method of manufacturing a pole piece unit, wherein the inner skin portion 110 and the outer skin portion 140 are formed by winding a carbon sheet. In claim 8,
An end ring 430 made of a non-magnetic material for fixing the plurality of pole piece members 120 and the non-magnetic members 130 is provided at at least one end of the pole piece unit 20. The end ring coupling step coupled to the end of at least one of the members 120 and the non-magnetic members 130 is performed before, after, or simultaneously with the magnetic member/non-magnetic member installation step. Pole piece unit manufacturing method. In claim 8,
The outer skin formation step is,
After forming the outer skin portion 140 by wrapping a carbon sheet around a cylinder jig having a preset outer diameter, the outer skin portion 140 is attached to a plurality of pole piece members 120 and a plurality of non-magnetic members 130. A method of manufacturing a pole piece unit, characterized in that it is installed on the outer peripheral surface formed by. In claim 10,
After forming the outer skin portion 140, the inner skin portion 110, the plurality of pole piece members 120, the non-magnetic members 130, and the outer skin portion 140 are integrated through heating. Pole piece unit manufacturing method. In claim 8,
The outer skin formation step is,
After the plurality of pole piece members 120 and the non-magnetic members 130 are installed on the outer peripheral surface of the inner skin portion 110, the outer skin portion 140 is formed by wrapping a carbon sheet and impregnating a resin. Pole piece unit manufacturing method.

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