KR102292967B1 - Magnet assembly and production method thereof - Google Patents

Abstract

The present invention relates to a magnet assembly that does not include an adhesive layer between magnet parts arranged in a Halbach array, and a method for manufacturing the same. According to the present invention, the magnet assembly comprises: a support plate including a magnet insertion unit; a magnet unit inserted into the magnet insertion unit and including a plurality of magnet units arranged in a Halbach array; and a first cover plate disposed on one surface of the support plate and including a thermosetting product of a first prepreg.

Description

Magnet assembly and manufacturing method thereof

The present invention relates to a magnet assembly and a method for manufacturing the same, and more particularly, to a magnet assembly that does not include an adhesive layer between magnet parts arranged in a Halbach arrangement, and a method for manufacturing the same.

The Halbach magnet is made by arranging a plurality of magnet pieces in a magnet arrangement method proposed by Halbach in 1983, and can cancel the magnetic flux on an unwanted surface while concentrating the magnetic flux on a desired surface.

These Halbach magnets generally consist of magnetized magnet pieces. However, the Halbach magnet has a problem in that the magnet piece of the magnetic force amplification region is pushed up in the vertical direction. In order to solve this problem, in the art, the magnet pieces have been fixed through a bonding process of applying an adhesive between the magnet pieces during the manufacture of the Halbach magnet. However, it was not easy to apply an adhesive between the magnet pieces due to the structure of the Halbach magnet itself, and the manufacturing time and cost increased due to the bonding process. Also, since heat was applied during the bonding process, the magnet was damaged by heat.

It is an object of the present invention to provide a magnet assembly that does not include an adhesive layer between magnet parts arranged in a Halbach arrangement.

Another object of the present invention is to provide a method of manufacturing a magnet assembly without thermal damage to magnet parts as well as reducing manufacturing time and manufacturing cost.

In order to achieve the above object, the present invention is a support plate comprising a magnet insert; a magnet unit inserted into the magnet insert and including a plurality of magnets arranged in a halbach array; and a first cover plate disposed on one surface of the support plate and including a thermosetting product of the first prepreg.

Further, in the present invention, the magnet unit does not include an adhesive layer between the magnet portions adjacent to each other.

In addition, the present invention may further include a second cover plate disposed on the other surface of the support plate and including a thermosetting product of the second prepreg.

In addition, the present invention comprises the steps of inserting each of the magnet unit comprising a plurality of magnets arranged in a Halbach arrangement in the magnet insertion portion of the support member including a plurality of magnet insertion portion; forming a first laminate by laminating a first prepreg on one surface of the supporting member into which the magnet unit is inserted; and cutting between the magnet units adjacent to each other in the first stacked body.

Further, the present invention does not include the step of interposing an adhesive layer between the magnet portions adjacent to each other in the magnet unit.

In addition, in the present invention, the laminating step may further laminate a second prepreg on the other surface of the support member to form a second laminate. In this case, the cutting step may cut between the magnet units adjacent to each other in the second laminate.

The magnet assembly according to the present invention is covered by the cover plate in a state in which the magnet unit is inserted into the support plate, so that the process of thermal bonding the magnet parts during manufacturing can be omitted, and thus the magnetic force increased in a specific direction without thermal damage can have

1 is a cross-sectional view schematically showing a magnet assembly according to a first embodiment of the present invention.
2 is a cross-sectional view schematically showing a magnet assembly according to a second embodiment of the present invention.
3(a) and 3(b) are cross-sectional views schematically showing an embodiment of a magnet unit according to the present invention, respectively.
4 is a cross-sectional view schematically illustrating each process of manufacturing a magnet assembly according to a third embodiment of the present invention.
5 is a cross-sectional view schematically illustrating each process of manufacturing a magnet assembly according to a fourth embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Examples of the present invention are provided to more completely explain the present invention to those of ordinary skill in the art, and the following examples may be modified in various other forms, and the scope of the present invention is not limited to the following examples It is not limited to an example. In this case, like reference numerals refer to like structures throughout this specification.

Unless otherwise defined, all terms (including technical and scientific terms) used herein may be used with the meaning commonly understood by those of ordinary skill in the art to which the present invention belongs. In addition, terms defined in a commonly used dictionary are not to be interpreted ideally or excessively unless clearly specifically defined.

In addition, since the size and thickness of each component shown in the drawings are arbitrarily indicated for convenience of description, the present invention is not necessarily limited to the illustrated bar. In order to clearly express various layers and regions in the drawings, the thicknesses are enlarged. And in the drawings, for convenience of description, the thickness of some layers and regions are exaggerated.

Also, throughout the specification, when a part "includes" a certain component, it means that other components may be further included, rather than excluding other components, unless otherwise stated.

In addition, throughout the specification, "on" or "on" means not only the case located above or below the target part, but also includes the case where there is another part in the middle, and must be in the direction of gravity It does not mean that it is positioned above with respect to .

And, in the present specification, terms such as “first” and “second” do not indicate any order or importance, but are used to distinguish components from each other.

1 is a cross-sectional view schematically showing a magnet assembly according to a first embodiment of the present invention, and FIG. 2 is a cross-sectional view schematically showing a magnet assembly according to a second embodiment of the present invention, a magnet assembly 1A according to the present invention. , 1B) is a support plate 10 including a magnet insert (11); a magnet unit (M) which is inserted into the magnet insertion unit (11) and includes a plurality of magnet units arranged in a halbach array; and a first cover plate 20 disposed on one surface of the support plate 10 and including a thermosetting product of the first prepreg. In addition, the magnet assembly 1B according to the present invention may further include a second cover plate 30 disposed on the other surface of the support plate 10 and including a thermosetting product of the second prepreg.

Here, the magnet unit M includes a plurality of magnets M1a, M1b, M1c, and M1d arranged in a Halbach arrangement as shown in FIG. 3, and the magnet insertion part of the support plate 10 ( 11) is inserted. The magnet parts M1a, M1b, M1c, and M1d of the magnet unit M are fixed by the first cover plate 20 that covers the support plate 10 . For this reason, even if the magnet unit M does not include an adhesive layer between the magnet parts in the region where the repulsive force is generated, the magnet parts in the region where the repulsive force is generated are fixed by the first cover plate 20 and pushed in the vertical direction. doesn't come up Accordingly, in the present invention, unlike the prior art, since there is no need to interpose an adhesive layer between the magnet parts, a process of thermally bonding the magnet parts during manufacture of the magnet assembly may be omitted. Accordingly, according to the present invention, the magnetic force can be increased by focusing the magnetic flux in a specific direction without reducing the manufacturing time and the manufacturing cost, as well as thermal damage to the magnet parts.

Hereinafter, a magnet assembly 1A according to a first embodiment of the present invention will be described with reference to FIG. 1 .

A magnet assembly 1A according to a first embodiment of the present invention includes a support plate 10 including a magnet insert 11; a magnet unit (M) inserted into the magnet insertion unit (11); and a first cover plate 20 sequentially disposed on the support plate 10 and including a thermosetting product of the first prepreg.

(1) support plate

In the magnet assembly 1A of the present invention, the support plate 10 is a part that receives and supports the magnet unit M.

The support plate 10 of the present invention includes a magnet insert 11 into which the magnet unit M is inserted. At this time, the magnet insertion unit 11 may be one or a plurality as shown in FIG. 1 . The shape of the magnet insert 11 may be adjusted according to the shape of the magnet unit M.

The magnet insertion portion 11 may be a through-type insertion hole or a non-through-type insertion groove. At this time, when the magnet insertion part 11 is an insertion hole as shown in FIG. 1 , the thickness of the magnet unit M is the same as the thickness of the support plate 10 . On the other hand, when the magnet insertion portion 11 is the insertion groove, the thickness of the magnet unit (M) is smaller than the thickness of the support plate (10).

The material of the above-described support plate 10 is not particularly limited as long as it has high hardness and high strength in general in the art, and may be, for example, a polymer. The polymer usable in the present invention is not particularly limited, such as a thermoplastic or thermosetting polymer, and for example, an epoxy-based polymer, a polyurethane-based polymer, a polyamide-based polymer, a polyalphaolefin-based polymer, a vinyl-based polymer, an acrylic polymer, a polyacetal-based polymer, Polyether polymer, polyester polymer, polyether sulfone polymer, polysulfide polymer, polyimide polymer, polypeptide polymer, polyketone polymer, polyolefin polymer, polyimide polymer, vinylidine polymer, these of copolymers, etc., which may be used alone or in combination of two or more.

According to one example, the material of the support plate 10 may be an epoxy-based polymer. In this case, since the bending strength of the support plate 10 is improved, the magnet assembly 1A of the present invention may have light weight, high hardness, and high strength.

The epoxy-based polymer usable in the present invention is a polymer containing at least one epoxy group in a molecule, and is preferably an epoxy resin that does not contain a halogen atom such as bromine in the molecule. In addition, the epoxy-based polymer may contain not only silicone, urethane, polyimide, polyamide, etc. in the molecule, but also a phosphorus atom (P), a sulfur atom (S), a nitrogen atom (N), etc. in the molecule. . Examples of such epoxy-based polymers are the same as those described in the first plate portion, and thus are omitted.

The type of the epoxy-based polymer is not particularly limited, and for example, bisphenol A-type epoxy resin, bisphenol F-type epoxy resin, or hydrogenated ones thereof, phenol novolac-type epoxy resin, cresol novolac-type epoxy resin, etc. glycidyl ether-based epoxy resins; glycidyl ester-based epoxy resins such as hexahydrophthalic acid glycidyl ester and dimer acid glycidyl ester; glycidylamine-based epoxy resins such as triglycidyl isocyanurate and tetraglycidyl diamino diphenylmethane; and linear aliphatic epoxy resins such as epoxidized polybutadiene and epoxidized soybean oil, preferably bisphenol A type epoxy resin, bisphenol F type epoxy resin, phenol novolak type epoxy resin, cresol novolak type epoxy resin, biphenyl ( Biphenyl) type epoxy resin, polyfunctional epoxy (Epoxy) resin, and the like. These may be used alone, or two or more may be used in combination.

The thickness of the support plate 10 is not particularly limited, and is adjusted according to the thickness of the magnet unit. For example, it may be appropriate to adjust the thickness of the first plate 10 in the range of about 0.1 to 0.05 to 0.2 mm.

(2) Magnet unit

The magnet assembly 1A of the present invention includes a magnet unit M. The magnet unit (M) is fixed by being inserted into the magnet insertion portion (11) of the support plate (10).

The magnet unit M of the present invention includes a plurality of magnet parts, as shown in FIGS. 3(a) and 3(b). In this case, the plurality of magnet parts are arranged in a halbach array. For example, the magnet unit M may include a first magnet portion M1a, a second magnet along a first direction (eg, a longitudinal direction of the magnet unit), as shown in FIGS. 3(a) and 3(b). It includes a plurality of magnet parts repeatedly arranged in the order of the part M1b, the third magnet part M1c, and the fourth magnet part M1d. In this case, the first magnet part M1a may be arranged in the order of the S pole magnet piece and the N pole magnet piece along the first direction to have a first magnetization direction (eg, a direction toward the second magnet part). In addition, in the second magnet part M1b, the N-pole magnet piece is disposed on the S-pole magnet piece in the order of the S-pole magnet piece and the N-pole magnet piece in a second direction (eg, thickness direction) perpendicular to the first direction. to have a second magnetization direction (eg, an upward direction) perpendicular to the first magnetization direction. In addition, the third magnet part M1c is arranged in the order of the N-pole magnet piece and the S-pole magnet piece along the first direction, and the third magnetization direction symmetrical to the first magnetization direction (eg, the second magnet part side direction) ) can have In addition, the fourth magnet part M1d has an N-pole magnet piece and an S-pole magnet piece in the second direction perpendicular to the first direction, that is, the S-pole magnet piece is disposed on the N-pole magnet piece, so that the second magnetization direction and It may have a symmetrical fourth magnetization direction (eg, a downward direction). The order of each N-pole and S-pole magnet piece of these first to fourth magnet parts M1a, M1b, M1c, and M1d is only an example, and the order of each N-pole and S-pole magnet piece of each magnet part is opposite to that described above. may be

In the magnet unit M of the present invention, a repulsive force is generated between an N-pole magnet piece and another adjacent N-pole magnet piece, and between an S-pole magnet piece and another adjacent S-pole magnet piece. Since the magnet portion of the repulsive force generating region, for example, the N-pole magnet piece of the second magnet portion M1b is pushed up in the vertical direction by the repulsive force, an adhesive or the like is conventionally applied between the magnet pieces. On the other hand, in the present invention, the first cover plate 20 is attached to the surface including the repulsive force generating region among both surfaces of the magnet unit M. Therefore, the magnet unit M of the present invention is, as shown in FIG. 3(a), a region in which a repulsive force is generated, for example, a portion in which an N-pole magnet piece and another N-pole magnet piece are in contact, and a region adjacent to the S-pole magnet piece. Even if the adhesive layer does not exist in the portion where the other S-pole magnet pieces are in contact, the magnet pieces are not pushed up in the vertical direction by the repulsive force. That is, the magnet unit M according to the present invention does not include an adhesive layer between the magnet portions adjacent to each other.

The magnet parts M1a, M1b, M1c, and M1d may be a magnetized magnet or a non-magnetized magnet. For example, the first and third magnet parts M1a and M1c may be magnetized magnets, and the second and fourth magnet parts M1b and M1d may be magnetized magnets, non-magnetized magnets, or a combination thereof. In the manufacturing process, in the second and fourth magnet parts M1b and M1d, a mixture of a magnetized magnet and a non-magnetized magnet may further improve manufacturing efficiency.

Further, in the magnet unit M, since the plurality of magnet portions have the above-described magnetization directions, the magnetic field of the magnet unit M is asymmetrically distributed, and thus the magnetic force is also asymmetrical. For example, in the magnet unit M, the magnetic force of one side (eg, upper) side including the repulsive force generating region is stronger than the magnetic force of the other surface (eg, lower) side.

In order to further increase the magnetic force of the one surface (eg, upper) side of this magnet unit, in the present invention, as shown in FIG. 3 ( b ), the magnet unit M opposite to the surface in contact with the first cover plate 20 ) may further include a shielding portion (M2) disposed on the surface (eg, the lower portion). According to an example, the magnet unit (M) includes a plurality of magnets; And it may include a shield (M2) disposed on the lower portion of the plurality of magnets.

The shielding part M2 is obtained by machining a magnetic shielding member into a predetermined shape, and may shield magnetic force lines in at least one direction (eg, downward direction) among the magnetic force lines of the magnet.

The magnetic shielding member usable in the present invention is not particularly limited as long as it is commonly used in the art. For example, it may be a magnetic material having high magnetic permeability, specifically, a magnetic material having high magnetic permeability and capable of shielding and reflecting the magnetic force line of the magnet. Specifically, the magnetic shield member includes a carbon steel sheet (eg, S45C, etc.), a stainless steel sheet (eg, SUS430, SUS304, etc.), a free-cutting steel sheet (eg, SUM1B1, SUM1B2, SUM1B2L, SUM1B3, SUM1B4L, SUM1C1, SUM1D1, SUM1D3, etc.), cold rolled carbon steel sheet (SPCC), hot rolled carbon steel sheet, silicon steel sheet, and the like. In addition, a plated steel sheet obtained by electrolytic plating or electroless plating of the steel sheet with a (semi)metal or alloy such as nickel, zinc, or copper may also be used as a magnetic shielding member. Examples of such coated steel sheets include cold rolled galvanized steel sheets, hot rolled galvanized steel sheets, electrolytic galvanized iron (EGI), zinc aluminum alloy coated steel sheets, hot-dip galvanized steel sheets, and electrolytic nickel plated steel sheets. , electroless nickel plated steel plate, copper plated steel plate, and the like. The plating layer of the plated steel sheet may be a single layer or a plurality of layers.

The magnetic shielding member may be surface-treated. Examples of the surface treatment method include chemical conversion treatment such as chromate treatment, phosphate coating treatment (eg, triphosphate coating treatment), phosphate chromate treatment, and the like; There is a roughening (粗化) treatment, etc., but is not limited thereto. The surface-treated magnetic shield member has an increased adhesive strength with the heat-sealable adhesive layer due to an increase in surface energy.

For example, the magnetic shield member may be one selected from the group consisting of a nickel-plated steel sheet, an electrolytic nickel-plated steel sheet, and an electroless nickel-plated steel sheet, and the surface of the steel sheet may be chromate-treated. In this case, not only the adhesion with the heat-sealing adhesive layer is increased, but also corrosion resistance can be increased.

The shape of the shielding part M2 may have various shapes according to the required specifications and magnetic force (shielding force) of the magnet assembly, and may be designed according to the shielding direction. Specifically, the shape of the shielding part is not particularly limited as long as it is a shape capable of shielding the magnetic force lines in at least one direction (eg, downward direction) among the magnetic force lines of the magnet unit M. For example, it may have a plate shape, a tube shape, or a column shape with an open top and a closed bottom (eg, a U-shaped vertical cross-section). In this case, the shielding part may have a shape in which one or more of a plate shape, a tube shape, and a column shape are combined. According to an example, the vertical cross-section of the shielding part M2 may have a U-shape.

(3) first cover plate

The magnet assembly 1A of the present invention includes a first cover plate 20 . The first cover plate 20 is a portion disposed on one surface of the support plate 10 and covers the support plate 10 . At this time, the magnet unit M is inserted into the magnet insertion part 11 of the support plate 10 . Therefore, as described above, between the magnet parts in the magnet unit M of the present invention, even if there is no adhesive layer, the first cover plate 20 is directly attached to the support plate 10 and is attached to the magnet insertion part 11 . It is possible to fix the inserted magnet unit (M). That is, the surface portion of the magnet unit M in contact with the first cover plate 20 includes a repulsive force generating region, and the magnet portions in this region may be fixed by the first cover plate 20 . As a result, the first cover plate 20 may prevent some magnet parts of the magnet unit M from being pushed up in the vertical direction (eg, the Z-axis direction) due to the repulsive force.

The first cover plate 20 includes a thermosetting product of a first prepreg. The thermosetting product of the first prepreg is a composite material reinforced with a first fiber base in a first polymer matrix, and has excellent light weight, high hardness, and high strength characteristics. Accordingly, the first cover plate 20 of the present invention may be excellent in lightness, as well as high hardness and high strength characteristics. In addition, since the first prepreg is in a B-stage (semi-hardened) state, it may be directly attached (adhesive) to the support plate 10 without a separate adhesive member when manufacturing the magnet assembly. Accordingly, the first cover plate 20 may also be attached to the support plate 10 .

According to an example, the first prepreg includes a first fibrous substrate and a first polymer impregnated in the first fibrous substrate.

The first fiber base usable in the present invention may improve the strength of the first cover plate. The first fiber substrate may be a fiber itself or a member made of fibers such as yarn, woven fabric, non-woven fabric, knitting, braid, and the like. The material (fiber) of the fiber base is not particularly limited, and non-limiting examples include vegetable fibers such as cotton and hemp; animal fibers such as wool, silk, and the like; recycled fibers such as rayon; synthetic fibers such as polyester, acrylic, nylon, polyurethane and the like; inorganic fibers such as glass fibers and carbon fibers; There are metal fibers and the like, and these may be used alone or in combination of two or more. Among them, in the case of inorganic fibers such as glass fiber and carbon fiber, since the moisture content is low, pores in the first cover plate are not formed when the first prepreg is cured, and also has excellent thermal stability. Accordingly, when the fabric made of inorganic fibers is used, the strength and thermal stability of the final first cover plate may be improved.

In addition, examples of the first polymer are not particularly limited, and epoxy polymers, polyurethane polymers, polyamide polymers, polyalphaolefin polymers, vinyl polymers, acrylic polymers, polyacetal polymers, polyether polymers, Polyester polymers, polyethersulfone polymers, polysulfide polymers, polyimide polymers, polypeptide polymers, polyketone polymers, polyolefin polymers, polyimide polymers, vinylidine polymers, copolymers thereof, etc. However, these may be used alone or in combination of two or more. Among them, in the case of the epoxy-based polymer, the curing rate is fast during the manufacture of the magnet assembly, so that productivity can be improved, and thermal stability and chemical stability of the first cover plate can be improved.

The curing temperature of the above-mentioned first prepreg is not particularly limited, and according to an example, it may be a temperature of about 110 to 180 ℃, specifically about 110 to 150 ℃, more specifically about 110 to 120 ℃. In this case, it is possible to prevent damage to the magnet unit M due to heat during the manufacture of the magnet assembly.

According to one example, the first cover plate 20 includes a thermosetting product of a first prepreg, and the first prepreg includes at least one first fiber substrate selected from the group consisting of glass fiber and carbon fiber; and an epoxy-based polymer impregnated in the first fiber substrate. This first prepreg may be thermosetted at a temperature of about 110 to 180 °C (specifically about 110 to 150 °C, more specifically about 110 to 120 °C).

The thickness of the second plate 20 is not particularly limited, and may be, for example, in the range of 0.05 to 0.2 mm.

Hereinafter, a magnet assembly 1B according to a second embodiment of the present invention will be described with reference to FIG. 2 .

A magnet assembly (1B) according to a second embodiment of the present invention includes a support plate (10) including a magnet insert (11); a magnet unit (M) inserted into the magnet insertion unit (11); and a first cover plate 20 and a second cover plate 30 respectively disposed on both surfaces of the support plate 10, wherein the first cover plate 20 is configured to form a thermosetting product of the first prepreg. and the second cover plate 30 includes a thermosetting product of the second prepreg.

In the magnet assembly 1B according to the second embodiment of the present invention, since the descriptions of the support plate 10, the magnet unit M, and the first cover plate 20 are the same as those described in the first embodiment, , is omitted.

In the magnet assembly 1B according to the second embodiment of the present invention, the second cover plate 30 is disposed on the other surface (eg, the lower portion) of the support plate, and is the same as or different from the first cover plate 20 . can do. The second cover plate 30 may reinforce the mechanical properties of the support plate 10 . In addition, when the magnet insertion part 11 is an insertion hole, it is possible to prevent the magnet unit M from being separated from the support plate 10 to the outside.

The second cover plate 30 includes a thermosetting product of the second prepreg, and includes a composite material reinforced with a second fiber base in a second polymer matrix. This second prepreg may be the same as or different from the first prepreg.

Specifically, the second prepreg includes a second fiber base, and a second polymer impregnated in the second fiber base. In this case, the second fiber base may be the same as or different from the first fiber, and the second polymer may be the same as or different from the first polymer. Descriptions of the second fiber base and the second polymer are omitted because they are the same as those described in the first fiber base and the first polymer, respectively.

The curing temperature of the second prepreg is not particularly limited, and according to an example, it may be a temperature of about 110 to 180 ℃, specifically about 110 to 150 ℃, more specifically about 110 to 120 ℃. In this case, it is possible to prevent damage to the magnet unit M due to heat during the manufacture of the magnet assembly.

According to an example, the second cover plate 30 includes a thermosetting product of a second prepreg, and the second prepreg includes at least one second fiber substrate selected from the group consisting of glass fiber and carbon fiber; and an epoxy-based polymer impregnated in the second fiber substrate. This second prepreg may be thermosetted at a temperature of about 110 to 180 °C (specifically about 110 to 150 °C, more specifically about 110 to 120 °C).

In addition, the thickness of the 2nd cover plate 30 is not specifically limited. According to one example, the thickness of the second cover plate 30 may be the same as or different from the thickness of the first cover plate 20 , and may specifically be in the range of about 0.05 to 0.2 mm.

Hereinafter, each process of manufacturing the magnet assembly 1A according to the third embodiment of the present invention will be described with reference to FIG. 4 .

Figure 4 is a cross-sectional view showing each process of manufacturing the magnet assembly (1A) according to the third embodiment of the present invention, the magnet assembly (1A) of the present invention (S10) including a plurality of magnet inserts (110) Inserting each of the magnet units (M) including a plurality of magnets arranged in a Halbach arrangement in the magnet insertion portion 110 of the support member 100; (S20) forming a first laminate (1000A) by laminating a first prepreg 200 on one surface of the supporting member 100 into which the magnet unit (M) is inserted; and (S30) cutting between the magnet units M adjacent to each other in the first stacked body 1000A. However, the manufacturing method does not include the step of interposing an adhesive layer between the magnet parts adjacent to each other in the magnet unit (M). Such a manufacturing method is not limited only by the above-described steps, and steps of each process may be modified or selectively mixed as needed.

(S10) step: insertion process of the magnet unit

As shown in FIG. 4 , the magnet unit M including a plurality of magnet parts in a Halbach arrangement is inserted into the magnet inserting part 110 of the support member 100 including a plurality of magnet inserting parts 110 , respectively. do.

Specifically, the step (S10) includes (S11) forming a plurality of magnet inserts 110 in the support member 100; and (S12) inserting each of the magnet units (M) into the plurality of magnet insertion units (110).

In the step (S11), a member formed of a polymer (eg, an epoxy-based polymer, etc.) is prepared, and then a plurality of magnet insertion units 110 for inserting the magnet unit M into the support member 100 are spaced apart to form. .

The support member 100 usable in the present invention is a member made of a polymer, and the description of the polymer is the same as that described in the support plate part of the first embodiment, and therefore will be omitted.

The shape and size processing of the magnet insert 110 is not particularly limited as long as it is a processing method generally known in the art, for example, CNC processing, punching processing, and the like. In this case, the shape and size of the magnet insertion unit 110 may be adjusted according to the shape and size of the inserted magnet unit (M).

Since the description of the magnet unit M inserted into the magnet inserting part 110 is the same as that described in the magnet unit M part described in the first embodiment, it is omitted.

However, in the magnet unit (M) used in step (S12), some magnet part(s) may be non-magnetized products (magnets).

Specifically, the magnet unit (M) includes a plurality of magnet parts. As the plurality of magnet parts are arranged in a Halbach arrangement, the magnet parts of some regions of one surface of the magnet unit (M) are magnet parts having the same pole to each other. contact At this time, when the magnet parts having the same pole are magnetized magnets, a repulsive force is generated between them, and when assembling the magnet unit (M) to the support member 100, some magnet parts of the magnet unit (M) are pushed up in the vertical direction and work may decrease efficiency. Therefore, in the present invention, by including a non-magnetized magnet part in a portion of the repulsive force generation region, it is possible to improve the working efficiency. When the magnet unit M includes such a non-magnetized magnet part, the method further includes the step of magnetizing the non-magnetized magnet part after the cutting process ('(S40) step'). The magnetization process will be described later.

Further, in the case of the present invention, there is no need to form an adhesive layer between the magnet portions of the magnet unit M. Therefore, the present invention does not include the step of interposing an adhesive layer between the magnet parts adjacent to each other in the magnet unit (M).

(S20) laminating process between the first prepreg-support member

4, by laminating the first prepreg 200 on one surface of the support member 100 into which the magnet unit M obtained in step (S10) is inserted, a first laminate (1000A) is formed. to form

Specifically, the magnet unit M is inserted into the magnet insertion part 110 of the support member 100 obtained in the step (S10). After laminating the first prepreg 200 on one surface of the support member 100 , heating and pressing are performed. However, the first prepreg 200 is in a B-stage state and has adhesiveness. Accordingly, the first prepreg 200 may be attached (adhesive) to one surface of the support member 100 without a separate adhesive member. At this time, the first prepreg 200 is laminated on one surface of the support member 100 so that the surface including the repulsive force generating region among both surfaces of the magnet unit M comes into contact with the first prepreg 200 and then heated, pressurize According to an example, the surface portion of the magnet unit M in contact with the first prepreg 200 includes a repulsive force generating region.

Since the description of the first prepreg 200 is the same as that described in the first cover plate portion of the first embodiment, it is omitted.

The first prepreg-lamination process between the supporting member is performed using a device such as a hot press machine at a temperature of about 110 to 180 ℃ (specifically, about 110 to 150 ℃, more specifically about 110 to 120 ℃) at a temperature of about 45 to Heat and press for 75 minutes (specifically about 50 to 70 minutes, more specifically about 55 to 65 minutes). At this time, the pressing pressure may be 10 ~ 40 kgf / ㎠. Through this lamination process, the first prepreg 200 is hardened while being attached (adhesive) to one surface of the support member 100, thereby making a thermosetting member of the first prepreg (hereinafter, 'first cover member') ( The first stacked body 1000A in which 200 is integrated with the support member 100 may be manufactured. At this time, since the curing temperature of the lamination process is about 180 ° C. or less, it is possible to minimize the thermal demagnetization of the magnet unit M in the support member 100 when the lamination process is performed.

(S30) step: cutting process of the laminate

As shown in FIG. 4 , the magnet units adjacent to each other in the first stacked body 1000A obtained in step S20 are cut.

Specifically, the first stacked body 1000A obtained in step (S20) has a structure of the first cover member 200-support member 100, and the support member 100 includes a plurality of magnet insertion parts spaced apart from each other ( 110). Since the magnet unit (M) is inserted into each of these magnet inserts 110, the magnet units (M) are also spaced apart from each other. Accordingly, when cutting between the magnet units (M) in the first stacked body (1000A) using a cutting device, as shown in FIG. 1, the support plate 10 into which the magnet unit (M) is inserted; And it is possible to obtain a magnet assembly (1A) including a first cover plate (20) disposed on one surface of the support plate (10).

The cutting device usable in the present invention is not particularly limited as long as it is known in the art to cut (cut) a workpiece (especially a metal workpiece), for example, a laser cutting machine, a punching machine, a wire cutting machine ( wire cutting machine), water jet cutting machine (water cutting machine), plasma cutting machine (plasma cutting machine), and the like, but is not limited thereto.

Optionally, after the step (S30), a cooling step and/or a magnetizing step may be further performed.

The cooling step may be rapid cooling, natural cooling (20±10° C.), or high-temperature cooling at about 100° C. or less (specifically, about 50-100° C.). The cooling step may be performed under normal pressure (eg, 1 ㅁ0.1 atm) or while pressurizing in a separate pressurizable device.

By applying an external magnetic field to the magnet unit (M) in the magnetizing step, a magnetic force may be imparted to the non-magnetized magnet portion of the magnet unit (M). The magnetic force of the magnet part is proportional to the strength of the external magnetic field. This magnetization step may be performed after the cooling step when the magnet part has no magnetic force.

Specifically, the magnet unit M includes a plurality of magnet parts, and when some of the plurality of magnet parts are non-magnetized magnets, the non-magnetized magnet parts may be magnetized. For example, the magnet unit M may include a plurality of magnet parts in which magnetized magnet parts (eg, M1a, M1c) and non-attached magnet parts (eg, M1b, M1d) are alternately arranged, and the non-attached magnet part (eg M1b, M1d) can be magnetized.

The above-described magnetizing process may be performed by applying an external magnetic field during manufacture of the magnet assembly 1A as well as in the state of the final product.

Hereinafter, each process of manufacturing the magnet assembly 1B according to the fourth embodiment of the present invention will be described with reference to FIG. 5 .

5 is a cross-sectional view showing each process of manufacturing the magnet assembly 1B according to the fourth embodiment of the present invention, the magnet assembly 1B of the present invention (S100) including a plurality of magnet inserts 110 Inserting each of the magnet units (M) including a plurality of magnets in a Halbach arrangement in the magnet insertion portion 110 of the support member 100; (S200) Laminating the first prepreg 200 and the second prepreg 300 on both sides of the support member 100 into which the magnet unit M is inserted, respectively, to form a second laminate 1000B ; and (S300) cutting between the magnet units M adjacent to each other in the second stacked body 1000B. However, it is not limited only by the manufacturing method, and the steps of each process may be modified or selectively mixed as needed.

(S100) step

In the manufacturing method of the magnet assembly 1B according to the fourth embodiment of the present invention, the description of the step (S100) is the same as that described in the step (S10) of the third embodiment, and therefore is omitted.

(S200) step: laminating process between the first prepreg-support member-second prepreg

5, by laminating the first prepreg 100 and the second prepreg 200 on both sides of the supporting member 100 into which the magnet unit M obtained in step (S100) is inserted, respectively, A second laminated body 1000B is formed.

Specifically, the magnet unit M is inserted into the magnet insertion part 110 of the support member 100 obtained in the step (S100). The first prepreg 200 and the second prepreg 300 are respectively laminated on both sides of the support member 100 and then heated and pressed. However, the first and second prepregs 200 and 300 are in a B-stage state and have adhesive properties. Thereby, the second laminated body 1000B of the first prepreg-supporting member-second prepreg structure can be obtained.

The description of the first prepreg 200 is the same as that described in the first cover plate part of the first embodiment, and the description of the second prepreg 300 is in the second cover plate part of the second embodiment. Since it is the same as described, it is abbreviate|omitted.

The lamination process between the first prepreg-support member-second prepreg is performed at about 110 to 180 ° C (specifically, about 110 to 150 ° C, more specifically about 110 to 120 ° C) using a device such as a hot press machine. Heat and pressurize at a temperature for about 45 to 75 minutes (specifically about 50 to 70 minutes, more specifically about 55 to 65 minutes). In this case, the pressing pressure may be about 10 to 40 kgf/cm 2 . Through this lamination process, the first and second prepregs 200 and 300 are cured while being attached (adhesive) to both surfaces of the support member 100 , respectively. As a result, the thermosetting member ('first cover member') 200 of the first prepreg, the support member 100, and the thermosetting member ('second cover member') 300 of the second prepreg have a structure. The integrated second laminate 1000B may be manufactured. At this time, since the curing temperature of the lamination process is about 180 ° C. or less, it is possible to prevent thermal demagnetization of the magnet unit M in the support member 100 when the lamination process is performed.

(S300) step: cutting process of the laminate

As shown in FIG. 5 , in the second stacked body 1000B obtained in the step ( S200 ), adjacent magnet units M are cut.

Specifically, the second stacked body 1000B obtained in step (S200) has a structure of the first cover member 200 - the support member 100 - the second cover member 300, and the support members 100 are each other. It includes a plurality of spaced apart magnet insertion (110). A magnet unit (M) is inserted into each of these magnet insertion units (110), whereby the magnet units (M) are also spaced apart from each other. Therefore, when cutting between the magnet units (M) in the second stacked body (1000B) using a cutting device, as shown in FIG. 2, the support plate 10 into which the magnet unit (M) is inserted; a first cover plate 20 disposed on one surface of the support plate 10; and a second cover plate 30 disposed on the other surface of the support plate 10 may be obtained.

Since the cutting device usable in the present invention is the same as described in step (S30) of the third embodiment, it is omitted.

Optionally, after the step (S300), a cooling step and/or a magnetizing step may be further performed.

Since the cooling step and the magnetizing step are the same as those described in the third embodiment, they are omitted.

Although the embodiment has been described above, it is merely an example and does not limit the present invention, and those of ordinary skill in the art to which the present invention pertains are exemplified above within the range that does not depart from the essential characteristics of the present embodiment. It can be seen that various modifications and applications that have not been made are possible. For example, each component specifically shown in the embodiment can be implemented by modification. And differences related to such modifications and applications should be construed as being included in the scope of the present invention defined in the appended claims.

1A, 1B: magnet assembly, 10: support plate,
11: magnet insert, M: magnet unit,
20: a first cover plate, 30: a second cover plate,
100: a first support plate, 110: a magnet insert,
200: first prepreg, 300: second prepreg
1000A, 1000B: laminate

Claims (15)

delete delete delete delete delete delete delete inserting each magnet unit including a plurality of magnet portions arranged in a Halbach arrangement into a magnet insert portion of a support member including a plurality of magnet insertion portions;
forming a first laminate by laminating a first prepreg on one surface of the supporting member into which the magnet unit is inserted; and
Cutting between adjacent magnet units in the first stacked body
including,
A surface portion of the magnet unit in contact with the first prepreg includes a repulsive force generating region,
Some of the repulsive force generation region includes a non-magnetized magnet portion,
After the cutting step, the method of manufacturing a magnet assembly further comprising the step of magnetizing the non-magnetized magnet portion. 9. The method of claim 8,
The laminating step is to heat and press the first prepreg and the support member at a temperature of 110 to 180 ℃ for 50 to 70 minutes, the manufacturing method of the magnet assembly. 9. The method of claim 8,
In the laminating step, a second prepreg is additionally laminated on the other surface of the support member to form a second laminate,
The cutting step is to cut between the magnet units adjacent to each other in the second laminate, the manufacturing method of the magnet assembly. 11. The method of claim 10,
The laminating step is to heat and press the first prepreg, the support member and the second prepreg at a temperature of 110 to 180 ℃ for 50 to 70 minutes, the method of manufacturing a magnet assembly. 9. The method of claim 8,
and interposing an adhesive layer between adjacent magnet parts in the magnet unit. 9. The method of claim 8,
and a shield disposed on a surface of the magnet unit opposite the surface in contact with the first prepreg. delete delete

Images