WO2018092335A1 - Transformer, iron core, and amorphous metal member - Google Patents

Transformer, iron core, and amorphous metal member Download PDF

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Publication number
WO2018092335A1
WO2018092335A1 PCT/JP2017/020980 JP2017020980W WO2018092335A1 WO 2018092335 A1 WO2018092335 A1 WO 2018092335A1 JP 2017020980 W JP2017020980 W JP 2017020980W WO 2018092335 A1 WO2018092335 A1 WO 2018092335A1
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Prior art keywords
metal member
layer
amorphous
width
iron core
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PCT/JP2017/020980
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French (fr)
Japanese (ja)
Inventor
舘村　誠
佐藤　孝平
将 阿部
遠藤　博之
年樹 白畑
海津　朋宏
憲一 相馬
美稀 山崎
今川　尊雄
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株式会社日立産機システム
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Publication of WO2018092335A1 publication Critical patent/WO2018092335A1/en

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/24—Magnetic cores
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/24—Magnetic cores
    • H01F27/26—Fastening parts of the core together; Fastening or mounting the core on casing or support
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F30/00—Fixed transformers not covered by group H01F19/00
    • H01F30/06—Fixed transformers not covered by group H01F19/00 characterised by the structure
    • H01F30/12—Two-phase, three-phase or polyphase transformers

Definitions

  • the present invention relates to a transformer.
  • Patent Document 1 discloses an amorphous iron core transformer that takes a large iron core width.
  • an amorphous iron core transformer containing an iron core coil assembly formed by assembling an amorphous iron core made of an amorphous magnetic ribbon and a coil into which the amorphous iron core is inserted the amorphous iron core has a width of
  • the amorphous magnetic ribbons are laminated by alternately changing the positions where the abutting surfaces of the laminated amorphous magnetic ribbons are shifted.
  • Amorphous iron core transformer. (See claim 1).
  • a wound iron core used in a transformer opens a part of the laminated iron core material and inserts a winding coil in the opened part. Thereafter, the opened portion of the iron core material is wrapped.
  • An iron core using an amorphous magnetic ribbon (hereinafter simply referred to as an amorphous ribbon or an amorphous material) as an iron core material is an amorphous iron core.
  • an amorphous magnetic ribbon hereinafter simply referred to as an amorphous ribbon or an amorphous material
  • To increase the capacity of an amorphous transformer having an amorphous iron core it is necessary to increase the width of the iron core.
  • the amorphous ribbon has a width of several tens to 200 mm because it is difficult to manufacture a wide ribbon. Since a ribbon having a width wider than this varies in thickness and size of the ribbon, it is difficult to manufacture an amorphous iron core having a width larger than that of the amorphous ribbon.
  • Patent Document 1 describes a transformer having an amorphous iron core whose width is increased by arranging a plurality of types of amorphous magnetic ribbons having different widths to face each other.
  • Patent Document 1 arranges the amorphous ribbons in abutment with each other, but since it is performed manually, it is not considered to make the gap smaller.
  • An object of the present invention is to provide a transformer having an iron core in which the gap between the arranged amorphous ribbons is small.
  • an amorphous transformer as an example of the present invention is a transformer having a wound iron core and a coil wound around the wound iron core, and the wound iron core is made of a plate-shaped metal member.
  • the assembly is laminated, and the assembly of plate-like metal members includes a first layer in which two or more adjacent metal members are arranged with a gap therebetween, and a second layer. It has a junction part in the part which the metal member of the 2nd layer which contacts the metal member of this layer overlaps.
  • the present invention can provide a transformer having stable magnetic characteristics.
  • FIG. 1 is a perspective view showing a three-phase three-legged amorphous iron core and winding coil assembly 30 constituted by three-phase three-windings.
  • the amorphous iron core and winding coil assembly 30 includes a winding coil 40a on the outer iron core 30a and the inner iron core 30b, a winding coil 40b on the inner iron core 30b and the inner iron core 30c, and a winding coil on the inner iron core 30c and the outer iron core 30a. 40c is wound respectively.
  • Example 1 will be described with reference to FIGS.
  • FIG. 2 shows the inner iron core 30b.
  • the winding coil 40a and the winding coil 40b are not shown.
  • the cc ′ and dd ′ sections will be described later with reference to FIGS. 4A and 4B.
  • the inner core 30b will be described as an example, but the following description can be applied to the outer core 30a and the inner core 30c.
  • a wide amorphous ribbon 1 and a narrow amorphous ribbon 2 are arranged in the inner core 30b. This means that the wide amorphous ribbon 1 is wider than the narrow amorphous ribbon 2.
  • the junction point 21 is arrange
  • corner portions c2 and c3 are a lap portion where the amorphous ribbons 1 and 2 are wrapped.
  • the wrapping method overlap, step wrap, or a combination of these can be used.
  • the outer peripheral side is pulled more than the inner peripheral side by not disposing the junction point 21 in the corner portions c1 to c4, the inner peripheral side and the outer peripheral side are less likely to be displaced. Details will be described later.
  • the inner iron core 30b has a set of four amorphous ribbons 10 laminated.
  • FIG. 3A shows a state before lapping a set of four amorphous ribbons 10 as the inner iron core 30b.
  • Amorphous ribbons 1 and 2 are not shown in FIG. 3A because it is a plan view, but amorphous ribbons 3 and 4 are arranged in the second layer, which is a lower layer of the first layer, respectively. ing.
  • a wide amorphous ribbon 1 opened in the horizontal direction is arranged on the upper side of the first layer, and an amorphous ribbon 2 having a narrow width is arranged in parallel on the lower side.
  • a narrow amorphous ribbon 4 is arranged in the same manner on the upper side of the second layer, and a wide amorphous ribbon 3 is arranged on the lower side.
  • the side surfaces of the amorphous ribbons that are arranged to face each other are called the butt surfaces.
  • a gap 22a is a solid line between the abutting surfaces of the amorphous ribbon 1 having a large width of the first layer and the amorphous ribbon 2 having a small width, and the amorphous ribbon 3 having a wide width of the second layer and an amorphous thin film having a narrow width.
  • a gap 22b is indicated by a broken line between the abutting surfaces with the band 4.
  • FIG. 3B is a diagram showing a cross section taken along the line a-a ′ shown in FIG. 3A.
  • An amorphous ribbon 3 having a narrow width in the first layer as the upper layer and an amorphous ribbon 4 having a narrow width in the second layer as the lower layer are shown.
  • FIG. 3C is a cross-sectional view taken along the line b-b ′ of FIG. 3A and shows a state seen from the arrow direction.
  • a wide amorphous ribbon 1 and a narrow amorphous ribbon 2 are arranged via a gap 22a from the first end 50a side shown on the right side of the first layer in the figure.
  • the amorphous ribbons 4 having a narrow width from the first end 50a side of the second layer are arranged with the amorphous ribbons 3 arranged through the gaps 22b.
  • the widths of the wide amorphous ribbons 1 and 4 are Wl, and the widths of the narrow amorphous ribbons 2 and 3 are Ws.
  • the gaps 22a and 22b can be carried out if the width is smaller than Ws, that is, smaller than the widths of the narrow amorphous ribbons 2 and 3. Since the amorphous ribbons 1 to 4 have waviness on the side surface, that is, the abutting surface side, it is possible to prevent the amorphous ribbons from overlapping each other by making the widths of the gaps 22a and 22b larger than the waviness.
  • FIG. 3D a wide amorphous ribbon 1a and a narrow amorphous ribbon 2a are arranged in the long side direction. An example in which a part of the short side is omitted and the long side is enlarged is shown.
  • the undulation varies from individual to individual, but is about submillimeters (about 0.1 to 0.9 mm) for a high-quality amorphous ribbon. It is difficult to perform matching manually in consideration of such undulations.
  • the gaps 22a and 22b should be 0.1 mm or more and 1 mm or less as shown in FIG. 3B so that the amorphous ribbons 1 and 2 are arranged to make the gap smaller than the face-to-face contact. Can do. As a result, the space factor of the iron core can be increased.
  • the space factor is a ratio of the total thickness of the iron core members to the thickness of the entire laminated iron cores. That is, the smaller the voids in the iron core, the higher the space factor, and the magnetic properties of the iron core are improved. Further, when the gaps 22a and 22b have a width of 1 mm or more and 10 mm or less, automatic arrangement or the like can be performed on the production line, and productivity is increased. Moreover, since it is a value larger than a wave
  • the equal width of the amorphous ribbon means that the width of the amorphous ribbon in the product standard is the same. Since the side surface portion of the amorphous ribbon has an error such as distortion, it does not mean that the actual width is completely the same.
  • first layer two types of amorphous ribbons having different widths are arranged in the order of widths Wl and Ws from the first end 50a side, and in order of the widths Ws and Ws from the first end part 50a side of the second layer. They are staggered. By arranging the first layer and the second layer in a staggered manner, the positions of the gaps 22a and 22b on the butted surfaces are different in the upper and lower layers.
  • the set of four amorphous ribbons 10 is welded by laser or electric resistance.
  • a joint point 21 is shown where a part of the portion where the amorphous ribbons of the first layer and the second layer overlap is welded.
  • the joint point 21 is also referred to as a joint because the size of the weld varies depending on the welding conditions.
  • the joint at the joint point 21 may be continuously formed as a joint line in the b-b ′ direction shown in FIG. 3A. That is, you may join so that it may have length in a long side direction.
  • These bonding methods are not particularly limited, and laser bonding can be performed by a method of intermittent bonding by pulse irradiation.
  • a seam bonding method using a rotating electrode may be employed.
  • the method of applying electrical resistance need not be continuous, and may be joined intermittently by applying electricity. Furthermore, it is good to set it as the number of joining of the number which can be fixed to the extent that the set of four amorphous thin strips 10 do not fall apart by spot welding which is one of electric resistance welding.
  • an amorphous amorphous ribbon When bonded, an amorphous amorphous ribbon will be crystallized, but since the first layer and the second layer are metal-bonded, the connection is stronger than a simple contact between the amorphous ribbons. . Note that the strength can be adjusted by the bonding area.
  • the crystallization region generated by welding the amorphous ribbon can be reduced, the magnetic circuit flow can be reduced, and the loss increasing function can be reduced.
  • the width of the cross section of the junction 21 is preferably 1 mm or less. If the width of the amorphous ribbons 2 and 4 is 100 mm and the width of the amorphous ribbons 1 and 3 is 200 mm, the total width when the amorphous ribbons are widened (the total width of the amorphous ribbons) Is about 300 mm.
  • the joint width of one joint line is 1 mm, since there are three joint points 21, the total is 3 mm. Since the total width of the junction points 21 that obstruct the flow of the magnetic circuit is 3 mm with respect to the total width of 300 mm of the amorphous ribbon, the loss is about 1% compared to the case where all of the amorphous ribbon is amorphous. Can be suppressed. The effect is small compared to other parameters.
  • the first layer and the second layer of amorphous ribbons are described as one layer, but 10 layers of the first layer and the second layer of amorphous ribbons are bundled in the layer direction. You can also.
  • the iron core lapping time can be reduced. The number is not limited to 10 and may be other several.
  • the plane area refers to the part where the amorphous ribbon becomes vertical or horizontal when assembled as an iron core.
  • the corner portion refers to a region where the amorphous ribbon has a curvature more than the flat portion when assembled as an iron core. That is, the bent region of the amorphous thin ribbon of the iron core after assembly is a corner portion, and the planar region is an unbent region.
  • junction points 21 are provided at different intervals in the longitudinal direction of the set of four amorphous ribbons 10. That is, the junction points 21 are arranged at different intervals in the radial direction when assembled as an iron core.
  • the different intervals are a wide interval between the junction points 21 such as the corner portion c1 as the first interval and a narrow interval between the junction points 21 between the corner portions c1 and c2 as the second interval, and are different intervals.
  • the interval between the joining points 21 may be shorter in the corner portion c1 than in the planar region. This is because the area of the corner portion c1 is narrow because the curvature on the inner peripheral side is small. In any case, the number of the junction points 21 in the longitudinal direction of the amorphous ribbon is larger in the planar region.
  • the flow of the magnetic circuit when a set of four amorphous ribbons 10 are laminated and assembled as an iron core 30b is the depth direction of FIG. 3C.
  • the bonding point 21 of a set of four amorphous ribbons 10 can be implemented if there are three points in the short side direction of the amorphous ribbon. That is, the overlapping portion of the amorphous ribbon 1 having a large width of the first layer and the amorphous ribbon 4 of the second layer is joined, and the amorphous ribbon 1 having a large width of the first layer and an amorphous thin film having a wide width of the second layer.
  • a set of four sheets of amorphous The ribbon 10 can be fixed without being loose. That is, the first layer amorphous ribbons and the second layer amorphous ribbons alternately arranged are alternately connected via the joints 21.
  • the joining point 21 of the overlapping portion is not limited to one place, and two or more places may be provided in the short side direction of the amorphous ribbon.
  • the thickness of the amorphous ribbon is one-tenth or less of the thickness of a silicon steel plate, which is a general iron core material, and the typical thickness is 50 ⁇ m or less.
  • the number of laminated layers is 2000 or more when the thickness of the core is 100 mm, for example.
  • a set of four amorphous ribbons 10 can be handled as a single amorphous ribbon. Therefore, the assembly work of the iron core can be performed without considering the positional deviation of the gaps 22a and 22b during the lapping work.
  • the thickness of the junction point 21 is desirably as close as possible to the sum of the thicknesses of the amorphous ribbons of the first layer and the second layer. By preventing the joining portion of the joining point 21 from being raised, the thickness of the set of four amorphous ribbons 10 becomes flat.
  • the joining point 21 can be joined without being thicker than the thickness of the amorphous ribbon depending on the welding conditions of laser or electric resistance welding. In addition, even if it is a case where thickness arises in the junction point 21, thickness can be made small by arrange
  • the butt surface can be fixed so as not to move before and after the lapping work when the winding coil is inserted into the abutted amorphous ribbon. That is, it is possible to suppress a change in the gap between the amorphous ribbons that are abutted before and after the lapping operation.
  • the space factor stabilizes when assembled as an iron core.
  • the magnetic property is one of the properties of the iron core determined by the magnetic permeability and space factor of the iron core material.
  • the strain becomes larger around the junction point 21 and the undulation is more likely to occur in the vertical direction (layer direction) compared to the case where there is no junction point 21 is there.
  • the upper and lower ribbons have different curvature radii, and therefore the gap between the joining points is different between the upper and lower sides. That is, when the junction points 21 are arranged at regular intervals, a tensile stress is generated in the first layer amorphous ribbon as compared with the second layer amorphous ribbon.
  • the joint points 21 are not provided in the corner portions c1 to c4 which are the configuration of the present embodiment, even if the corner portion is bent when assembled as an iron core, the difference in curvature radius between the upper and lower surfaces is shifted in the circumferential direction. Therefore, the strain generated when the joint is present does not occur. Therefore, the space factor is less likely to decrease at the corner. As a result, the magnetic characteristic as an iron core can be improved compared with the case where a junction point is provided in a corner part.
  • the corner portion c2 can absorb the deviation.
  • FIG. 4A and 4B are views showing the c-c 'cross section and the d-d' cross section of the iron core 30b of FIG.
  • the c-c ′ cross section shows a cross section of the planar region of the wound core 30b.
  • the upper side of FIG. 4A is the inner peripheral side, and the lower side is the outer peripheral side.
  • a part of an example in which several thousand sets of four sheets of amorphous ribbons 10 are laminated is shown, and three junction points 21 (three lines) are formed on each set of four sheets of amorphous ribbons 10. ing.
  • FIG. 4B shows a cross-section of the corner c1 of the wound core 30b in the d-d ′ cross section.
  • the upper side in FIG. 4B is the inner peripheral side, and the lower side is the outer peripheral side.
  • Thousands of a set of four amorphous ribbons 10 are laminated, but the junction 21 is not formed on the inner peripheral side (upper side in FIG. 4B) of the corner portion c1.
  • the junction 21 is formed on the outer peripheral side (lower side in FIG. 4B) of the iron core corner portion c1. Since the radius of curvature is small on the inner peripheral side of the corner portion c1, in consideration of the effect of increased strain around the junction point 21, a set of four amorphous ribbons 10 without the junction point 21 is disposed in the corner portion c1.
  • the outer peripheral side of the corner portion c1 has a large radius of curvature, even if the corner portion c1 has the junction point 21, the distortion is small and the magnetic performance is hardly affected.
  • a set of four amorphous ribbons 10 each provided with a junction 21 are arranged on the outer corner c1. The same applies to the other corners c2 to c4.
  • the joint points 21 such as the corner portion c1 are arranged in a straight line or a curved line from the inner peripheral side to the outer peripheral side in accordance with the curvature of the amorphous ribbon on the inner peripheral side and the outer peripheral side, the positional deviation between the amorphous ribbons is It is less likely to occur and is effective.
  • a set of four amorphous ribbons 10 provided with a junction 21 on the outer peripheral side of the corner portion c1 is disposed.
  • a set of four amorphous ribbons 10 not provided with the junction 21 on the outer peripheral side may be arranged. That is, the area of the iron core 30b is reduced and the area of the corner portion c1 and the like is increased.
  • a set of four amorphous ribbons 10 may be arranged in which a junction point 21 is provided on the inner peripheral side of the corner and the number of welding points is smaller than the number of points in the planar area. That is, the junction points 21 having an interval wider than the interval between the junction points 21 in the planar region are arranged in the corner portion c1 of the amorphous ribbon on the inner peripheral side from the center of the iron core.
  • the inner peripheral side is not easily affected by the curvature, it is more difficult to cause displacement by providing the junction points 21 at the corner c1 at a pitch wider than that of the planar region.
  • the distortion of the corner part c1 can be reduced by reducing the number of joining points.
  • a set of four amorphous ribbons 10 in which the interval between the bonding points between the planar region and the corner portion, that is, the interval between the bonding points 21 is adjusted for each stack may be disposed. That is, the distance between the junction points 21 is different between the inner peripheral side and the outer peripheral side amorphous ribbon.
  • a set of four amorphous ribbons 10 each having a fixed interval between the junction points 21 are arranged and laminated, and the periphery of the junction point such as the corner portion c1 is intentionally pulled to correspond to the corner portion c1 or the like.
  • Some of the joining points 21 may be peeled off, and the wound iron core may be formed by reducing the strain when bending is formed. This means that the corner portion c1 has a crystallized portion where the first layer and the second layer are not joined. In this case, the welding process of the amorphous ribbon is simplified.
  • the joining state is such that it is peeled off. Therefore, even if the assembly is misaligned, the stress can be released, which is effective.
  • a method of manufacturing a set of four amorphous ribbons 10 will be described with reference to FIG.
  • the welding means 26 is arranged on the upper part of the first layer of the four amorphous ribbons 10 arranged, and a state in which the laser 27 is irradiated from the welding means 26 is shown. Also shown is a cutting means 28 for cutting a set of four amorphous ribbons 10.
  • gaps 22 a and 22 b are provided in order to manufacture a set of four amorphous ribbons 10.
  • four amorphous ribbons cut to a predetermined length in the longitudinal direction are provided with gaps 22 a and 22 b in the first layer and the second layer, respectively. Arrange them so that they are staggered. Although this arrangement may be performed manually, the same operation is repeated, so it is preferable to arrange and arrange efficiently with a transfer robot or the like.
  • the widths of the gaps 22a and 22b are preferably set in consideration of the above-described productivity.
  • the longitudinal linearity of the amorphous ribbon is accompanied by a swell of about sub-millimeter. If the gap 22a is to be controlled at, for example, 50 ⁇ m or less, highly accurate control and monitoring are required. In some cases, the undulations may interfere with each other and the butt surfaces may overlap.
  • the bonding device 26 is representatively a laser bonding device, and the amorphous ribbon 1 is irradiated with a laser 27.
  • the joining device 26 may be movable in the vertical direction in the figure. Alternatively, it is also possible to appropriately join when three sets of four amorphous thin ribbons 10 are transported.
  • a predetermined length is conveyed to a predetermined cutting position of a set of four amorphous ribbons 10 bonded together, and is cut using a cutting means 28. Thereby, a set of four amorphous ribbons 10 is formed.
  • the cutting means 28 can be cut with heat using laser, electric resistance welding or the like.
  • laser, electric resistance welding, or the like the same device as the joining device 26 can be used, and therefore a separate cutting device is not required.
  • a cutting means such as a dicing saw or a band saw is used, the crystallization region can be reduced, which is effective.
  • the number of the junction points 21 in the short side direction of the plane region is three as shown in the figure, while the right side of the cutting means 28 is set to five points in the short side direction of the amorphous ribbon. is there.
  • the iron core 30b is configured by wrapping a set of four amorphous ribbons 10 of the present invention described above. As an example of the method, overlapping is performed. In this case, since the crystallized portion is only the junction point 21, the area where the non-crystallized portions are in contact with each other is large, and the flow of the magnetic circuit is not hindered.
  • the iron core 30b can be configured to have a size obtained by adding the thickness of the four amorphous ribbons 10 to the thickness of the laminated amorphous ribbons, and the core can be downsized.
  • an iron core can be made with a thickness of 2002 sheets by using a step lap structure using 1000 sets of 4 sheets of 1 set amorphous ribbon 10.
  • any plate-like metal member such as a silicon steel plate or a grain-oriented electrical steel plate can be used.
  • a set of four plate-like metal members is an aggregate of plate-like metal members.
  • Example 2 will be described with reference to FIG. Up to this point, an example has been described in which two amorphous ribbons of two kinds of widths Wl and Ws are combined in each layer (a total of four), but an amorphous ribbon having a wide width depending on the number of sheets arranged in each layer and the arrangement method. This is an example of configuration.
  • a cross-sectional view of a set of six amorphous ribbons 10a in an example in which a total of six amorphous ribbons having two types of widths Wl and Ws are arranged is shown.
  • One amorphous ribbon 100 having a width Wl and two amorphous ribbons 200 having a width Ws are arranged from the first end 50c of the first layer toward the second end 50d.
  • two amorphous thin strips 400 having a width Ws and one amorphous thin strip 300 having a width Wl are arranged from the first end 50c of the second layer toward the second end 50d.
  • a part of the overlapping portion of the amorphous ribbon 100 having the width Wl of the first layer and the amorphous ribbon 400 having the width Ws of the second layer is joined at the junction 21, 400 is not broken.
  • a part of the portion overlapping with the amorphous ribbons of different layers is joined.
  • (B) shows a cross-sectional view of a set of six amorphous ribbons 10b arranged in a different order from (a). From the first end 50c of the first layer to the second end 50d, two amorphous ribbons 100 and one amorphous ribbon 200 are arranged, and the amorphous ribbon 400 is 1 in the second layer. Sheets and two amorphous ribbons 300 are arranged in order.
  • (c) shows a cross-sectional view of a set of eight amorphous ribbons 10c, unlike (a) and (b).
  • Two amorphous ribbons 100 and two amorphous ribbons 200 are arranged from the first end 50c of the first layer toward the second end 50d, and the amorphous ribbon 400 is 1 in the second layer.
  • One sheet, one amorphous ribbon 300, one amorphous ribbon 400, and one amorphous ribbon 300 are arranged in order.
  • n-1 where n is the number of amorphous ribbons used. In other words, by joining the overlapping portions of the amorphous ribbons by a number one less than the number of sheets used, it is possible to make the core material as one wide amorphous ribbon.
  • a third type of amorphous ribbon 500 having a width Wm is used.
  • the first layer amorphous ribbon and the second layer amorphous ribbon are arranged so as to have an overlapping portion, and a part of the overlapping portion is joined.
  • the width of the amorphous ribbon can be implemented not only with two types but also with three types.
  • the way of arrangement shows an example, and it can be arranged in other order as shown in (a) and (b).
  • not only three types of width but also four or more types can be implemented in the same manner, and an iron core material having an arbitrary width can be configured.
  • the examples (a) to (c) are configured by the combination of the same amorphous ribbon width and the number of sheets in the first layer and the second layer, the total width of the amorphous ribbons is adjusted. Cheap. That is, even if the arrangement order is different for each layer, the amorphous ribbons to be used are the same combination for each layer, and it is easy to align the end faces. The space factor as an iron core improves by aligning the end faces.
  • amorphous thin strips 200 having a width Ws are arranged in order from the first end portion 50c of the first layer, and two amorphous thin strips 300 having a width Wl are arranged in order from the first end portion 50c of the second layer. Yes. A part of these overlapping portions is joined by a joining point 21.
  • the idea of the present invention can be implemented by a combination of at least two widths of amorphous ribbon.
  • the second end 50d side can be thinned when assembled as an iron core. This is effective when a spacer or a buffer member is sandwiched between the iron core and the winding coil. In this way, the present invention can be implemented even if the first end portion 50c and the second end portion 50d are not necessarily aligned or aligned.
  • amorphous ribbons of each layer are amorphous ribbons of the same width.
  • the portions where the amorphous ribbons of the first layer and the second layer overlap each other are provided, the first end and the second end are not aligned.
  • a wide amorphous iron core can be manufactured by these methods.
  • the junction point 21 is provided, it is difficult for the amorphous ribbon to be misaligned during the assembly of the iron core, so that variations in the iron core performance can be reduced.
  • production efficiency can be improved.
  • the thin ribbons that are formed and joined together are less affected because of the increase in the overlap of the original amorphous ribbon thickness, contributing to the miniaturization of the iron core.
  • junction point 21 of the set of four amorphous ribbons 10 is crystallized, since it is bonded with a small cross-sectional area with respect to the flow of the magnetic circuit, the influence of the crystallized junction point can be suppressed. it can. As a result, the influence of magnetic loss can be reduced as an iron core or a transformer.
  • each of the above embodiments can be applied not only to the transformer and the iron core of the transformer, but also to a reactor (stationary induction device) having an iron core and a coil. Also in this case, it is possible to reduce the variation in the space factor of each manufactured reactor core, and thus to provide a reactor having stable core characteristics. While the above description has been made with reference to exemplary embodiments, it will be apparent to those skilled in the art that the invention is not limited thereto and that various changes and modifications can be made within the spirit of the invention and the scope of the appended claims.
  • Amorphous ribbon with a wide width 2 4 Amorphous ribbon with a narrow width 10, 10a A set of four amorphous ribbons 21, 21a Joint point 30a Outer core 30b, 30c Inner core 40a, 40b, 40c Coil 50 Wide Cross section of iron core c1, c2, c3, c4 Corner

Abstract

The purpose of the present invention is to provide a transformer that has an iron core having less variation in space factor. In order to solve the problem, a representative transformer according to the present invention has: a wound iron core; and a coil wound on the wound iron core, and is characterized in that the wound iron core is formed by laminating an aggregate of plate-like metal members, and the aggregate of plate-like metal members has a first layer and a second layer in which two or more metal members adjacent to each other are arranged with gaps therebetween, and has a joining part at a portion where an overlap is formed between a metal member of the first layer and a metal member of the second layer in contact therewith.

Description

変圧器、鉄心及びアモルファス金属部材Transformers, iron cores and amorphous metal parts 参照による取り込みImport by reference
本出願は、２０１６年１１月１８日に出願された日本特許出願第２０１６－２２４６４４号の優先権を主張し、その内容を参照することにより本出願に取り込む。 This application claims the priority of Japanese Patent Application No. 2016-224644 filed on November 18, 2016, and is incorporated herein by reference.
　本発明は、変圧器に関する。
背景技術 The present invention relates to a transformer.
Background art
　鉄心幅を大きく取るアモルファス鉄心変圧器が特許文献１に記載されている。この特許文献１には、「アモルファス磁性薄帯からなるアモルファス鉄心と、該アモルファス鉄心を挿入するコイルとを組み立ててなる鉄心コイル組立体を収納したアモルファス鉄心変圧器において、前記アモルファス鉄心は、幅の異なる複数種のアモルファス磁性薄帯をそれぞれ突き合わせて並べて積層するとき、該並べて積層したアモルファス磁性薄帯の突き合わせ面がずれるように並べる位置を交互に換えて積層してアモルファス鉄心を構成することを特徴とするアモルファス鉄心変圧器。」と記載されている（請求項１参照）。 Patent Document 1 discloses an amorphous iron core transformer that takes a large iron core width. In this patent document 1, “in an amorphous iron core transformer containing an iron core coil assembly formed by assembling an amorphous iron core made of an amorphous magnetic ribbon and a coil into which the amorphous iron core is inserted, the amorphous iron core has a width of When laminating and laminating different types of amorphous magnetic ribbons differently from each other, the amorphous magnetic ribbons are laminated by alternately changing the positions where the abutting surfaces of the laminated amorphous magnetic ribbons are shifted. Amorphous iron core transformer. ”(See claim 1).
特開２０１３－９８３４９号公報JP 2013-98349 A
　変圧器に使用される巻鉄心は、積層された鉄心材料の一部を開き、開かれた部分に巻線コイルを挿入する。その後、鉄心材料の開かれた部分をラッピングされる。鉄心材料にアモルファス磁性薄帯（以下、単にアモルファス薄帯またはアモルファス材と呼ぶ）を用いた鉄心がアモルファス鉄心である。アモルファス鉄心を有するアモルファス変圧器の大容量化には鉄心幅を大きくする必要がある。 A wound iron core used in a transformer opens a part of the laminated iron core material and inserts a winding coil in the opened part. Thereafter, the opened portion of the iron core material is wrapped. An iron core using an amorphous magnetic ribbon (hereinafter simply referred to as an amorphous ribbon or an amorphous material) as an iron core material is an amorphous iron core. To increase the capacity of an amorphous transformer having an amorphous iron core, it is necessary to increase the width of the iron core.
　しかし、アモルファス薄帯は、幅が広いものを製造することが困難であるため数十ｍｍから２００ｍｍ程度の幅である。これより幅が広い薄帯は、薄帯の厚みや大きさにばらつきが出るため、アモルファス薄帯の幅より大きな幅を持つアモルファス鉄心の製造は困難である。 However, the amorphous ribbon has a width of several tens to 200 mm because it is difficult to manufacture a wide ribbon. Since a ribbon having a width wider than this varies in thickness and size of the ribbon, it is difficult to manufacture an amorphous iron core having a width larger than that of the amorphous ribbon.
　特許文献１には、幅の異なる複数種のアモルファス磁性薄帯をそれぞれ突き合わせて並べることで鉄心幅が大きくするアモルファス鉄心を有する変圧器が記載されている。 Patent Document 1 describes a transformer having an amorphous iron core whose width is increased by arranging a plurality of types of amorphous magnetic ribbons having different widths to face each other.
　しかし、特許文献１は、アモルファス薄帯同士を突き合わせて並べるが人手を介して行うため、間隙をより小さくすることが考慮されていない。 However, Patent Document 1 arranges the amorphous ribbons in abutment with each other, but since it is performed manually, it is not considered to make the gap smaller.
　本発明の目的は、並べられたアモルファス薄帯同士の間隙が小さい鉄心を有する変圧器を提供することにある。 An object of the present invention is to provide a transformer having an iron core in which the gap between the arranged amorphous ribbons is small.
　上記課題を解決するために、本発明の一例であるアモルファス変圧器は、巻鉄心と、巻鉄心に巻き回されたコイルとを有する変圧器であって、巻鉄心は、板状の金属部材の集合体が積層されており、板状の金属部材の集合体は、隣り合う金属部材が間隙を介して２つ以上並べられた第１の層と、第２の層とを有し、第１の層の金属部材と接触する第２の層の金属部材とが重なりあう部分に接合部を有していることを特徴とする。 In order to solve the above problems, an amorphous transformer as an example of the present invention is a transformer having a wound iron core and a coil wound around the wound iron core, and the wound iron core is made of a plate-shaped metal member. The assembly is laminated, and the assembly of plate-like metal members includes a first layer in which two or more adjacent metal members are arranged with a gap therebetween, and a second layer. It has a junction part in the part which the metal member of the 2nd layer which contacts the metal member of this layer overlaps.
　本発明により、安定した磁気特性を有する変圧器を提供することができる。
本発明の他の目的、特徴及び利点は添付図面に関する以下の本発明の実施例の記載から明らかになるであろう。 The present invention can provide a transformer having stable magnetic characteristics.
Other objects, features and advantages of the present invention will become apparent from the following description of embodiments of the present invention with reference to the accompanying drawings.
３相３巻線で構成された鉄心と巻き線コイルを示す斜視図である。It is a perspective view which shows the iron core comprised by 3 phase 3 winding, and a winding coil. 本発明の実施例に係る４枚１組のアモルファス薄帯を積層し、鉄心の構成を示す斜視図である。It is a perspective view which laminates | stacks one set of 4 amorphous ribbons based on the Example of this invention, and shows the structure of an iron core. 本発明の実施例に係る４枚１組のアモルファス薄帯の構成を示す平面図である。It is a top view which shows the structure of 4 sheets 1 set of amorphous ribbons based on the Example of this invention. 本発明の実施例に係る４枚１組のアモルファス薄帯の構成を示す断面図である。It is sectional drawing which shows the structure of a set of four amorphous ribbons concerning the Example of this invention. 本発明の実施例に係る４枚１組のアモルファス薄帯の構成を示す断面図である。It is sectional drawing which shows the structure of a set of four amorphous ribbons concerning the Example of this invention. 本発明の実施例に係るアモルファス薄帯を示す図である。It is a figure which shows the amorphous ribbon which concerns on the Example of this invention. 本発明の実施例に係る鉄心の断面図である。It is sectional drawing of the iron core which concerns on the Example of this invention. 本発明の実施例に係る鉄心の断面図である。It is sectional drawing of the iron core which concerns on the Example of this invention. 本発明の実施例に係る鉄心の製造装置の一例を示す図である。It is a figure which shows an example of the manufacturing apparatus of the iron core which concerns on the Example of this invention. 本発明の実施例に係る１組のアモルファス薄帯の断面図である。It is sectional drawing of a set of amorphous ribbons concerning the Example of this invention.
　以下、実施例を図面を用いて説明する。なお、全図において、同一の機能を有する部材には同一の符号を付し、その繰り返しの説明は省略する。 Hereinafter, examples will be described with reference to the drawings. In all the drawings, members having the same function are denoted by the same reference numerals, and repeated description thereof is omitted.
　以下の実施の形態では便宜上その必要があるときは、複数のセクションまたは実施の形態に分割して説明するが、特に明示した場合を除き、それらはお互いに無関係なものではなく、一方は他方の一部または全部の変形例、詳細、補足説明などの関係にある。 In the following embodiment, when it is necessary for the sake of convenience, the description will be divided into a plurality of sections or embodiments. However, unless otherwise specified, they are not irrelevant to each other. Some or all of the modifications, details, supplementary explanations, and the like are related.
　また、以下の実施例において、要素の数など（個数、数値、量、範囲などを含む）に言及する場合、特に明示した場合および原理的に明らかに特定の数に限定される場合などを除き、その特定の数に限定されるものではなく、特定の数以上でも以下でも良いものとする。
　同様に、以下の実施例において、構成要素等の形状、位置関係等に言及するときは、特に明示した場合および原理的に明らかにそうでないと考えられる場合等を除き、実質的にその形状等に近似または類似するもの等を含むものとする。このことは、上記数値および範囲等についても同様である。 In addition, in the following examples, when referring to the number of elements (including the number, numerical value, quantity, range, etc.), unless otherwise specified, the principle is clearly limited to a specific number, etc. The number is not limited to the specific number, and may be a specific number or more.
Similarly, in the following examples, when referring to the shape and positional relationship of components and the like, the shape and the like of the component are substantially excluding unless specifically stated or considered otherwise in principle. It shall include those that are approximate or similar to. The same applies to the above numerical values and ranges.
　以下本発明の実施の形態を図１を用いて説明する。
図１は、３相３巻線で構成した３相３脚式のアモルファス鉄心と巻線コイル組立体３０を示す斜視図である。
　アモルファス鉄心と巻線コイル組立体３０は、外鉄心３０ａと内鉄心３０ｂに巻線コイル４０ａが、内鉄心３０ｂと内鉄心３０ｃに巻線コイル４０ｂが、内鉄心３０ｃと外鉄心３０ａに巻線コイル４０ｃが、それぞれ巻き回されている。 Hereinafter, an embodiment of the present invention will be described with reference to FIG.
FIG. 1 is a perspective view showing a three-phase three-legged amorphous iron core and winding coil assembly 30 constituted by three-phase three-windings.
The amorphous iron core and winding coil assembly 30 includes a winding coil 40a on the outer iron core 30a and the inner iron core 30b, a winding coil 40b on the inner iron core 30b and the inner iron core 30c, and a winding coil on the inner iron core 30c and the outer iron core 30a. 40c is wound respectively.
　実施例１について図２から図５を用いて説明する。
　図２には内鉄心３０ｂを示す。詳細な説明の便宜上、巻線コイル４０ａと巻線コイル４０ｂを非表示とした図である。ｃ－ｃ’断面とｄ－ｄ’断面については図４ａ、図４Ｂを用いて後述する。内鉄心３０ｂを例に説明するが、下記の説明内容は外鉄心３０ａ及び内鉄心３０ｃにも実施可能である。 Example 1 will be described with reference to FIGS.
FIG. 2 shows the inner iron core 30b. For convenience of detailed description, the winding coil 40a and the winding coil 40b are not shown. The cc ′ and dd ′ sections will be described later with reference to FIGS. 4A and 4B. The inner core 30b will be described as an example, but the following description can be applied to the outer core 30a and the inner core 30c.
　内鉄心３０ｂには、幅が広いアモルファス薄帯１と、幅が狭いアモルファス薄帯２が並べられている。幅が広いアモルファス薄帯１は幅が狭いアモルファス薄帯２よりも幅が広
いという意味である。また、アモルファス薄帯には接合点２１が複数箇所に配置されている。内鉄心３０ｂのコーナ部ｃ１、ｃ２、ｃ３、ｃ４が示される。接合点２１は所定間隔で配置されている。 A wide amorphous ribbon 1 and a narrow amorphous ribbon 2 are arranged in the inner core 30b. This means that the wide amorphous ribbon 1 is wider than the narrow amorphous ribbon 2. Moreover, the junction point 21 is arrange | positioned in multiple places in the amorphous ribbon. Corner portions c1, c2, c3, c4 of the inner iron core 30b are shown. The junction points 21 are arranged at a predetermined interval.
　本明細書において、鉄心に用いられるものはアモルファス金属部材のうち薄いリボン状のものを用いるため、単にアモルファス薄帯と呼ぶ。 In this specification, since the thing used for an iron core uses the thin ribbon-shaped thing among amorphous metal members, it is only called an amorphous ribbon.
　コーナ部ｃ２とｃ３の間は、アモルファス薄帯１、２がラッピングされる部分であるラップ部である。ラッピング方法は、オーバーラップやステップラップまたはこれらを組み合わせたものを用いることができる。 Between the corner portions c2 and c3 is a lap portion where the amorphous ribbons 1 and 2 are wrapped. As the wrapping method, overlap, step wrap, or a combination of these can be used.
　コーナ部ｃ１からｃ４に接合点２１を配置しないことで、内周側よりも外周側が引っ張られるため、内周側と外周側でのズレを生じにくくなる。詳細は後述する。 Since the outer peripheral side is pulled more than the inner peripheral side by not disposing the junction point 21 in the corner portions c1 to c4, the inner peripheral side and the outer peripheral side are less likely to be displaced. Details will be described later.
　図３Ａから図３Ｃを用いて、接合点２１とアモルファス薄帯１から４の関係について説明する。内鉄心３０ｂは４枚１組のアモルファス薄帯１０が積層されている。４枚１組のアモルファス薄帯１０を内鉄心３０ｂとしてラッピングする前の状態を図３Ａに示す。 The relationship between the junction point 21 and the amorphous ribbons 1 to 4 will be described with reference to FIGS. 3A to 3C. The inner iron core 30b has a set of four amorphous ribbons 10 laminated. FIG. 3A shows a state before lapping a set of four amorphous ribbons 10 as the inner iron core 30b.
　上層である第１層にはアモルファス薄帯１と２が、図３Ａは平面図であるため図示されないが、第１層の下層である第２層にはそれぞれアモルファス薄帯３と４が配置されている。第１層上側には水平方向に開かれた幅広のアモルファス薄帯１、下側には幅が狭いアモルファス薄帯２が略並行に突き合わせられて並べられている。また、第２層上側には幅が狭いアモルファス薄帯４、下側には幅が広いアモルファス薄帯３が同様に並べられている。突き合わせて並べられたアモルファス薄帯の側面を突き合わせ面と呼ぶ。 Amorphous ribbons 1 and 2 are not shown in FIG. 3A because it is a plan view, but amorphous ribbons 3 and 4 are arranged in the second layer, which is a lower layer of the first layer, respectively. ing. A wide amorphous ribbon 1 opened in the horizontal direction is arranged on the upper side of the first layer, and an amorphous ribbon 2 having a narrow width is arranged in parallel on the lower side. Further, a narrow amorphous ribbon 4 is arranged in the same manner on the upper side of the second layer, and a wide amorphous ribbon 3 is arranged on the lower side. The side surfaces of the amorphous ribbons that are arranged to face each other are called the butt surfaces.
　第１層の幅が広いアモルファス薄帯１と幅が狭いアモルファス薄帯２との突き合わせ面同士の間に間隙２２ａが実線で、第２層の幅が広いアモルファス薄帯３と幅が狭いアモルファス薄帯４との突き合わせ面同士の間に間隙２２ｂが破線で示されている。このように所定距離の間隙２２ａ，２２ｂを設けることでアモルファス薄帯同士の重なりを防止することができる。 A gap 22a is a solid line between the abutting surfaces of the amorphous ribbon 1 having a large width of the first layer and the amorphous ribbon 2 having a small width, and the amorphous ribbon 3 having a wide width of the second layer and an amorphous thin film having a narrow width. A gap 22b is indicated by a broken line between the abutting surfaces with the band 4. Thus, by providing the gaps 22a and 22b having a predetermined distance, it is possible to prevent the amorphous ribbons from overlapping each other.
　図３Ｂは、図３Ａに示されるａ－ａ’の断面を示す図である。上層である第１層に幅が狭いアモルファス薄帯３と下層である第２層に幅が狭いアモルファス薄帯４が示されている。図示されない奥側には、第１層に幅が広いアモルファス薄帯１と、第２層に幅が広いアモルファス薄帯３が配置されている。 FIG. 3B is a diagram showing a cross section taken along the line a-a ′ shown in FIG. 3A. An amorphous ribbon 3 having a narrow width in the first layer as the upper layer and an amorphous ribbon 4 having a narrow width in the second layer as the lower layer are shown. On the far side (not shown), a wide amorphous ribbon 1 in the first layer and a wide amorphous ribbon 3 in the second layer are arranged.
　図３Ｃは、図３Ａのｂ－ｂ’断面であり、矢印方向から見た状態を示す。第１層の図右側に示される第１の端部５０ａ側から幅が広いアモルファス薄帯１と幅が狭いアモルファス薄帯２が間隙２２ａを介して並べられている。 FIG. 3C is a cross-sectional view taken along the line b-b ′ of FIG. 3A and shows a state seen from the arrow direction. A wide amorphous ribbon 1 and a narrow amorphous ribbon 2 are arranged via a gap 22a from the first end 50a side shown on the right side of the first layer in the figure.
　また、第２層の第１の端部５０ａ側から幅が狭いアモルファス薄帯４が間隙２２ｂを介してアモルファス薄帯３が並べられている。この幅が広いアモルファス薄帯１及び４の幅をＷｌとし、幅が狭いアモルファス薄帯２及び３の幅をＷｓとする。 Further, the amorphous ribbons 4 having a narrow width from the first end 50a side of the second layer are arranged with the amorphous ribbons 3 arranged through the gaps 22b. The widths of the wide amorphous ribbons 1 and 4 are Wl, and the widths of the narrow amorphous ribbons 2 and 3 are Ws.
　間隙２２ａと２２ｂの幅は、Ｗｓよりも小さな値、すなわち、幅の狭いアモルファス薄帯２と３の幅よりも小さければ実施できる。アモルファス薄帯１から４は側面部、つまり突き合わせ面側にうねりを有しているため、間隙２２ａと２２ｂの幅をうねりよりも大きくすることでアモルファス薄帯同士が重なり合うことを防止できる。 The gaps 22a and 22b can be carried out if the width is smaller than Ws, that is, smaller than the widths of the narrow amorphous ribbons 2 and 3. Since the amorphous ribbons 1 to 4 have waviness on the side surface, that is, the abutting surface side, it is possible to prevent the amorphous ribbons from overlapping each other by making the widths of the gaps 22a and 22b larger than the waviness.
　上述のうねりについて図３Ｄを用いて説明する。図３Ｄには、幅が広いアモルファス薄帯１ａと幅が狭いアモルファス薄帯２ａが長辺方向に並べられている。短辺方向は一部省略し、長辺を拡大した例を示している。 The above swell will be described with reference to FIG. 3D. In FIG. 3D, a wide amorphous ribbon 1a and a narrow amorphous ribbon 2a are arranged in the long side direction. An example in which a part of the short side is omitted and the long side is enlarged is shown.
　うねりは個体ごとにバラつきはあるが、品質のよいアモルファス薄帯ではサブミリ程度（０．１から０．９ｍｍ程度）である。このようなうねりを考慮して人手で突き合わせを行うのは困難である。 The undulation varies from individual to individual, but is about submillimeters (about 0.1 to 0.9 mm) for a high-quality amorphous ribbon. It is difficult to perform matching manually in consideration of such undulations.
　したがって、うねりを考慮して図３Ｂに示されるように間隙２２ａと２２ｂは０．１ｍｍ以上１ｍｍ以下としてアモルファス薄帯１と２を並べることで、人手を介して突き合わせるよりも間隙を小さくすることができる。ひいては、鉄心の占積率を高くすることができる。 Therefore, considering the undulation, the gaps 22a and 22b should be 0.1 mm or more and 1 mm or less as shown in FIG. 3B so that the amorphous ribbons 1 and 2 are arranged to make the gap smaller than the face-to-face contact. Can do. As a result, the space factor of the iron core can be increased.
　ここで、占積率とは、積層された鉄心全体の厚みに対する鉄心部材の厚さの総計の比率である。つまり、鉄心内部に空隙が少ないほど占積率は高くなり、鉄心の磁気特性が向上する。
　また、間隙２２ａと２２ｂを１ｍｍ以上１０ｍｍ以下の幅とすると、製造ラインで自動配置等が可能となり生産性が高くなる。また、うねりよりも大きな値であるため、アモルファス薄帯同士の重なりを容易に防止できる。なお、１０ｍｍ以上１００ｍｍ以下でも実施できるが、できるだけ間隙は小さい方がよい。 Here, the space factor is a ratio of the total thickness of the iron core members to the thickness of the entire laminated iron cores. That is, the smaller the voids in the iron core, the higher the space factor, and the magnetic properties of the iron core are improved.
Further, when the gaps 22a and 22b have a width of 1 mm or more and 10 mm or less, automatic arrangement or the like can be performed on the production line, and productivity is increased. Moreover, since it is a value larger than a wave | undulation, the overlap of amorphous thin strips can be prevented easily. Although it can be carried out at 10 mm or more and 100 mm or less, the gap should be as small as possible.
　第１層のアモルファス薄帯１と２と間隙２２ａの総和と、第２層のアモルファス薄帯３と４と間隙２２ｂの総和が等しい場合には、第１の端部５０ａと第２の端部５０ｂとでアモルファス薄帯の端面が揃うこととなる。すなわち、第１層のＷｌ＋Ｗｓ＋間隙２２ａの幅＝第２層のＷｌ＋Ｗｓ＋間隙２２ｂの幅の関係である。鉄心のうち巻線コイル４０ａ，４０ｂに接触する端面が平らになるため占積率を向上させることに寄与する。端面が揃うことで、巻鉄心３０ｂの側面を平らにすることができる。 When the sum of the first amorphous ribbons 1 and 2 and the gap 22a is equal to the sum of the second amorphous ribbons 3 and 4 and the gap 22b, the first end 50a and the second end At 50b, the end faces of the amorphous ribbon are aligned. That is, the relationship of Wl + Ws + gap 22a of the first layer = Wl + Ws + gap 22b of the second layer. Since the end surfaces of the iron core that come into contact with the winding coils 40a and 40b are flattened, the space factor is improved. By aligning the end surfaces, the side surface of the wound iron core 30b can be flattened.
　ここで、アモルファス薄帯の幅が等しいは、アモルファス薄帯の製品規格上の幅が同じであることを意味する。アモルファス薄帯の側面部には歪み等の誤差があるため、実際の幅が完全に一致という意味ではない。 Here, the equal width of the amorphous ribbon means that the width of the amorphous ribbon in the product standard is the same. Since the side surface portion of the amorphous ribbon has an error such as distortion, it does not mean that the actual width is completely the same.
　第１層には第１の端部５０ａ側から幅の異なる２種類のアモルファス薄帯が幅Ｗｌ、Ｗｓの順に並べられ、第２層の第１の端部５０ａ側から幅Ｗｓ，Ｗｓの順に互い違いに並べられている。第１層と第２層で互い違いに配置することにより、突き合わせ面の間隙２２ａと２２ｂの位置は上下の層で異なる位置となる。 In the first layer, two types of amorphous ribbons having different widths are arranged in the order of widths Wl and Ws from the first end 50a side, and in order of the widths Ws and Ws from the first end part 50a side of the second layer. They are staggered. By arranging the first layer and the second layer in a staggered manner, the positions of the gaps 22a and 22b on the butted surfaces are different in the upper and lower layers.
　４枚１組のアモルファス薄帯１０は、レーザ或いは電気抵抗などで溶接される。第１層と第２層のアモルファス薄帯の重なりあう部分の一部が溶接された箇所を接合点２１が示される。接合点２１は、溶接条件により溶接部の大きさが異なるため、接合部とも呼ぶ。 The set of four amorphous ribbons 10 is welded by laser or electric resistance. A joint point 21 is shown where a part of the portion where the amorphous ribbons of the first layer and the second layer overlap is welded. The joint point 21 is also referred to as a joint because the size of the weld varies depending on the welding conditions.
　接合点２１の接合は、図３Ａで示されるｂ－ｂ’方向に連続的に接合ラインとして形成してもよい。すなわち、長辺方向に長さを持つように接合してもよい。これらの接合方法は特に限定されることなく、レーザ接合であればパルス照射で断続的に接合する方法で実施できる。 The joint at the joint point 21 may be continuously formed as a joint line in the b-b ′ direction shown in FIG. 3A. That is, you may join so that it may have length in a long side direction. These bonding methods are not particularly limited, and laser bonding can be performed by a method of intermittent bonding by pulse irradiation.
　また、電気抵抗接合を用いる場合には、回転電極を用いたシーム接合方法を採用してもよい。電気抵抗を加える方法も連続である必要が無く、断続して電気を加え接合しても良い。さらに、電気抵抗溶接の一つであるスポット溶接により、４枚１組のアモルファス薄帯１０がバラバラにならない程度に固定できる数の接合数とするとよい。 In addition, when using electric resistance bonding, a seam bonding method using a rotating electrode may be employed. The method of applying electrical resistance need not be continuous, and may be joined intermittently by applying electricity. Furthermore, it is good to set it as the number of joining of the number which can be fixed to the extent that the set of four amorphous thin strips 10 do not fall apart by spot welding which is one of electric resistance welding.
　接合すると非晶質のアモルファス薄帯が結晶化されることとなるが、第１の層と第２の層で金属接合されるため、単なるアモルファス薄帯同士の接触に比べて強固な接続となる。なお、接合面積によりその強度は調整可能である。 When bonded, an amorphous amorphous ribbon will be crystallized, but since the first layer and the second layer are metal-bonded, the connection is stronger than a simple contact between the amorphous ribbons. . Note that the strength can be adjusted by the bonding area.
　接合点２１の面積を小さくすることで、アモルファス薄帯を溶接することで生じる結晶化領域を小さくでき、磁気回路の流れを低減し、損失を増加させる働きを小さくすることができる。 小 さ く By reducing the area of the junction 21, the crystallization region generated by welding the amorphous ribbon can be reduced, the magnetic circuit flow can be reduced, and the loss increasing function can be reduced.
　接合点２１の断面の幅は１ｍｍ以下とするとよい。幅が狭いアモルファス薄帯２と４の幅を１００ｍｍ、幅が広いアモルファス薄帯１と３の幅を２００ｍｍとすると、幅広にアモルファス薄帯を広げたときの全幅（アモルファス薄帯の幅の総和）は約３００ｍｍとなる。 ¡The width of the cross section of the junction 21 is preferably 1 mm or less. If the width of the amorphous ribbons 2 and 4 is 100 mm and the width of the amorphous ribbons 1 and 3 is 200 mm, the total width when the amorphous ribbons are widened (the total width of the amorphous ribbons) Is about 300 mm.
　接合ライン１箇所の接合幅を１ｍｍとすると、接合点２１は３つあるので、合計３ｍｍとなる。アモルファス薄帯の全幅３００ｍｍに対し、磁気回路の流れを阻害する接合点２１の幅の総和は３ｍｍであるため、アモルファス薄帯の全てを非晶質としたときに比べると１％程度の損失に抑えることができる。他のパラメータに比べて小さい影響である。 Suppose that the joint width of one joint line is 1 mm, since there are three joint points 21, the total is 3 mm. Since the total width of the junction points 21 that obstruct the flow of the magnetic circuit is 3 mm with respect to the total width of 300 mm of the amorphous ribbon, the loss is about 1% compared to the case where all of the amorphous ribbon is amorphous. Can be suppressed. The effect is small compared to other parameters.
　また、本実施例では第１層と第２層のアモルファス薄帯を１枚ずつの層として説明しているが、第１層と第２層のアモルファス薄帯を層方向に１０枚ずつ束ねることもできる。このように各層の枚数を増やした場合には、鉄心のラッピング作業時間を低減させることができる。１０枚に限定されず他の数枚としてもよい。 In this embodiment, the first layer and the second layer of amorphous ribbons are described as one layer, but 10 layers of the first layer and the second layer of amorphous ribbons are bundled in the layer direction. You can also. Thus, when the number of each layer is increased, the iron core lapping time can be reduced. The number is not limited to 10 and may be other several.
　鉄心３０ｂとして組み立てた際のコーナ部ｃ１からｃ４の間にある平面領域に少なくとも２点ずつ接合点２１を設けることで実施できる。コーナ部ｃ１とコーナ部ｃ２間の水平方向の２点を接合することで平面領域の間隙の位置ズレを生じにくくできる。 It can be implemented by providing at least two joint points 21 in the plane area between the corner portions c1 to c4 when assembled as the iron core 30b. By joining two horizontal points between the corner portion c1 and the corner portion c2, it is possible to make it difficult for the gap in the plane region to be displaced.
　平面領域とは鉄心として組み立てた際に、アモルファス薄帯が鉛直又は水平方向になる部分をいう。また、コーナ部とは鉄心として組み立てた際に、平面部分よりもアモルファス薄帯が曲率を持つ領域をいう。すなわち、組立後の鉄心のアモルファス薄帯のうち曲げられた領域がコーナ部であり、平面領域とは、曲げられていない領域である。 The plane area refers to the part where the amorphous ribbon becomes vertical or horizontal when assembled as an iron core. Further, the corner portion refers to a region where the amorphous ribbon has a curvature more than the flat portion when assembled as an iron core. That is, the bent region of the amorphous thin ribbon of the iron core after assembly is a corner portion, and the planar region is an unbent region.
　よって、４枚１組のアモルファス薄帯１０の長手方向には接合点２１が異なる間隔で設けられている。鉄心として組み立てた際の径方向に異なる間隔で接合点２１が配置されるということである。 Therefore, the junction points 21 are provided at different intervals in the longitudinal direction of the set of four amorphous ribbons 10. That is, the junction points 21 are arranged at different intervals in the radial direction when assembled as an iron core.
　異なる間隔とは、第１の間隔であるコーナ部ｃ１等の接合点２１の広い間隔と第２の間隔であるコーナ部ｃ１とｃ２間の接合点２１が狭い間隔であり、異なる間隔である。場合により、鉄心内周側の４枚１組のアモルファス薄帯１０は、平面領域よりもコーナ部ｃ１の方が接合点２１の間隔が短くなる場合がある。内周側は曲率が小さいため、コーナ部ｃ１の領域が狭いからである。いずれの場合もアモルファス薄帯の長手方向の接合点２１の数は平面領域の方が多い。 The different intervals are a wide interval between the junction points 21 such as the corner portion c1 as the first interval and a narrow interval between the junction points 21 between the corner portions c1 and c2 as the second interval, and are different intervals. In some cases, in the set of four amorphous ribbons 10 on the inner peripheral side of the iron core, the interval between the joining points 21 may be shorter in the corner portion c1 than in the planar region. This is because the area of the corner portion c1 is narrow because the curvature on the inner peripheral side is small. In any case, the number of the junction points 21 in the longitudinal direction of the amorphous ribbon is larger in the planar region.
　ここで、４枚１組のアモルファス薄帯１０を積層し鉄心３０ｂとして組み立てたときの磁気回路の流れは、図３Ｃの奥行き方向である。磁気回路の流れを妨げないようにするには、ｂ－ｂ’断面に投影したときの接合点２１の水平方向の接合面積が小さいほど良い。 Here, the flow of the magnetic circuit when a set of four amorphous ribbons 10 are laminated and assembled as an iron core 30b is the depth direction of FIG. 3C. In order not to obstruct the flow of the magnetic circuit, the smaller the horizontal junction area of the junction 21 when projected onto the b-b ′ cross section, the better.
　そのため、図３Ａ及び図３Ｃに示すように、４枚１組のアモルファス薄帯１０の接合点２１はアモルファス薄帯の短辺方向に３箇所あれば実施できる。
　すなわち、第１層の幅が広いアモルファス薄帯１と第２層のアモルファス薄帯４の重なり合う部分が接合され、第１層の幅が広いアモルファス薄帯１と第２層の幅が広いアモルファス薄帯３の重なりあう部分が接合され、第１層の幅が狭いアモルファス薄帯２と第２層の幅が広いアモルファス薄帯３の重なりあう部分が接合されていれば、４枚１組のアモルファス薄帯１０はバラけずに固定することができる。つまり、互い違いに並べられた第１の層のアモルファス薄帯と第２の層のアモルファス薄帯が接合部２１を介して交互に接続される関係である。 Therefore, as shown in FIG. 3A and FIG. 3C, the bonding point 21 of a set of four amorphous ribbons 10 can be implemented if there are three points in the short side direction of the amorphous ribbon.
That is, the overlapping portion of the amorphous ribbon 1 having a large width of the first layer and the amorphous ribbon 4 of the second layer is joined, and the amorphous ribbon 1 having a large width of the first layer and an amorphous thin film having a wide width of the second layer. If the overlapping part of the band 3 is joined and the overlapping part of the amorphous thin band 2 where the width of the first layer is narrow and the amorphous thin band 3 where the width of the second layer is wide are joined, a set of four sheets of amorphous The ribbon 10 can be fixed without being loose. That is, the first layer amorphous ribbons and the second layer amorphous ribbons alternately arranged are alternately connected via the joints 21.
　重なりあう部分の接合点２１は１箇所に限定されず、アモルファス薄帯の短辺方向に２箇所以上設けてもよい。 The joining point 21 of the overlapping portion is not limited to one place, and two or more places may be provided in the short side direction of the amorphous ribbon.
　アモルファス薄帯の厚みは一般的な鉄心材である珪素鋼板の厚さの十分の一以下で、代表的な厚さは５０μｍ以下である。アモルファス薄帯で変圧器の鉄心を形成する場合、鉄心の厚さを例えば１００ｍｍとすると、積層枚数は２０００枚以上になる。 The thickness of the amorphous ribbon is one-tenth or less of the thickness of a silicon steel plate, which is a general iron core material, and the typical thickness is 50 μm or less. When the core of the transformer is formed of an amorphous ribbon, the number of laminated layers is 2000 or more when the thickness of the core is 100 mm, for example.
　従来のように、アモルファス薄帯同士を接合せずに、幅広に並べたアモルファス薄帯を２０００枚程度積層することは原理上可能であるが、実際には巻線コイルの組み込み作業と巻鉄心のラッピング作業により、アモルファス薄帯の位置はズレてしまう。これにより鉄心の占積率が低下する場合がある。 As in the past, it is possible in principle to stack approximately 2000 amorphous ribbons arranged in a wide array without joining amorphous ribbons. The position of the amorphous ribbon is displaced by the lapping operation. Thereby, the space factor of an iron core may fall.
　このとき、手作業等で間隙２２ａと２２ｂや端部同士の位置ズレを修正する必要がある。このような手作業は効率が悪く生産コストがかさむこととなる。また、手作業で間隙２２ａと２２ｂの幅や各層の端部を揃えることは困難である。 At this time, it is necessary to correct the gaps 22a and 22b and the positional deviation between the ends by manual work or the like. Such manual work is inefficient and increases production costs. Further, it is difficult to align the widths of the gaps 22a and 22b and the end portions of each layer by hand.
　一方、上記した本発明の実施例の構成により、４枚１組のアモルファス薄帯１０を一体として１枚のアモルファス薄帯のように扱うことができる。よって、ラッピング作業の際に、間隙２２ａと２２ｂの位置ズレを考慮せずに、鉄心の組み立て作業を行うことができる。 On the other hand, according to the configuration of the above-described embodiment of the present invention, a set of four amorphous ribbons 10 can be handled as a single amorphous ribbon. Therefore, the assembly work of the iron core can be performed without considering the positional deviation of the gaps 22a and 22b during the lapping work.
　次に、接合点２１の厚みについて説明する。接合点２１の厚みは、接合点２１の厚みが第１層と第２層のアモルファス薄帯の厚みの和にできるだけ近づくことが望ましい。接合点２１の接合箇所が盛り上がらないようにすることで、４枚１組のアモルファス薄帯１０の厚みがフラットになる。 Next, the thickness of the junction 21 will be described. The thickness of the junction point 21 is desirably as close as possible to the sum of the thicknesses of the amorphous ribbons of the first layer and the second layer. By preventing the joining portion of the joining point 21 from being raised, the thickness of the set of four amorphous ribbons 10 becomes flat.
　これにより、鉄心として組み立てた際に占積率の低下を防ぐことができる。レーザや電気抵抗溶接の溶接条件により接合点２１の厚みは、アモルファス薄帯の厚みより厚くならずに接合できる。なお、接合点２１に厚みが生じた場合であっても、４枚１組のアモルファス薄帯１０ごとに接合点２１の位置を異なるように配置することで厚みを小さくすることができる。 This makes it possible to prevent a decrease in the space factor when assembled as an iron core. The joining point 21 can be joined without being thicker than the thickness of the amorphous ribbon depending on the welding conditions of laser or electric resistance welding. In addition, even if it is a case where thickness arises in the junction point 21, thickness can be made small by arrange | positioning so that the position of the junction point 21 may differ for every set of four amorphous ribbons 10. FIG.
　また、接合点２１を設けたため、突き合わせたアモルファス薄帯に巻線コイルを挿入する際に、突き合わせ面がラッピング作業前後で動かないように固定することできる。すなわち、ラッピング作業の前後で、突き合わせられたアモルファス薄帯間の間隙が変化することを抑制することができる。 Moreover, since the junction point 21 is provided, the butt surface can be fixed so as not to move before and after the lapping work when the winding coil is inserted into the abutted amorphous ribbon. That is, it is possible to suppress a change in the gap between the amorphous ribbons that are abutted before and after the lapping operation.
　上記した４枚１組のアモルファス薄帯１０に接合点２１を設けることにより、ラッピングの際にアモルファス薄帯のコーナ部の位置ズレや間隙２２ａと２２ｂの幅の変化を防止することができる。鉄心として組み上げた際に占積率が安定する。ひいては、鉄心の占積率が安定することにより、磁気特性が安定した変圧器を提供することが可能となる。磁気特性とは、鉄心材料の透磁率と占積率により定められる鉄心の特性のひとつである。 By providing the junction point 21 in the set of four amorphous ribbons 10 as described above, it is possible to prevent the misalignment of the corner portions of the amorphous ribbon and the change in the widths of the gaps 22a and 22b during lapping. The space factor stabilizes when assembled as an iron core. As a result, since the space factor of the iron core is stabilized, it is possible to provide a transformer having stable magnetic characteristics. The magnetic property is one of the properties of the iron core determined by the magnetic permeability and space factor of the iron core material.
　次に、コーナ部ｃ１からｃ４の構成の一例について説明する。図２及び図３Ａに示すようにコーナ部には接合点２１を設けていない例である。 Next, an example of the configuration of the corner portions c1 to c4 will be described. As shown in FIG.2 and FIG.3A, it is the example which has not provided the junction point 21 in the corner part.
　コーナ部ｃ１からｃ４に接合点２１がある場合も実施可能であるが、無い場合に比べて、接合点２１を中心にひずみが大きくなり、上下方向(層方向)にうねりが伴いやすくなるからである。上下面を接合した状態で曲げを加えると、上下の薄帯の曲率半径が異なるため接合点の間隔が上下で差が生じる。すなわち、接合点２１を一定の間隔で配置した場合に、第２層のアモルファス薄帯に比べて第１層のアモルファス薄帯には引張応力が生じる。 Although it is possible to implement the case where the junction points 21 are present at the corners c1 to c4, the strain becomes larger around the junction point 21 and the undulation is more likely to occur in the vertical direction (layer direction) compared to the case where there is no junction point 21 is there. When bending is performed with the upper and lower surfaces joined, the upper and lower ribbons have different curvature radii, and therefore the gap between the joining points is different between the upper and lower sides. That is, when the junction points 21 are arranged at regular intervals, a tensile stress is generated in the first layer amorphous ribbon as compared with the second layer amorphous ribbon.
　よって、接合点２１に力が加わりひずみの発生で上下方向にうねりが伴う。コーナ部ｃ１からｃ４に接合点２１を設けたアモルファス薄帯を２０００枚程度積層すると、上下（層）方向のうねりが増幅されるため、コーナ部ｃ１からｃ４に厚みが生じ、占積率の低下を招く。 Therefore, a force is applied to the joining point 21 and the undulation in the vertical direction is caused by the generation of strain. When about 2000 amorphous ribbons having junctions 21 provided at the corners c1 to c4 are laminated, the up and down (layer) direction undulation is amplified, resulting in a thickness at the corners c1 to c4 and a decrease in the space factor. Invite.
　本実施例の構成であるコーナ部ｃ１からｃ４に接合点２１を設けない場合には、鉄心として組み立てた際にコーナ部に曲げを加えても、上下面の曲率半径の違いを周方向にずれて吸収するため、該接合点がある場合に生じたひずみが発生しない。従って、コーナ部で占積率の低下は生じにくくなる。ひいては、コーナ部に接合点を設ける場合に比べて鉄心としての磁気特性を向上させることができる。 In the case where the joint points 21 are not provided in the corner portions c1 to c4 which are the configuration of the present embodiment, even if the corner portion is bent when assembled as an iron core, the difference in curvature radius between the upper and lower surfaces is shifted in the circumferential direction. Therefore, the strain generated when the joint is present does not occur. Therefore, the space factor is less likely to decrease at the corner. As a result, the magnetic characteristic as an iron core can be improved compared with the case where a junction point is provided in a corner part.
　また、アモルファス薄帯のうちコーナ部ｃ１とｃ２間の端面と、コーナ部ｃ２とｃ３間の端面の角度が多少異なる場合であっても、コーナ部ｃ２がズレを吸収することができる。 Further, even when the angle of the end surface between the corner portions c1 and c2 and the end surface between the corner portions c2 and c3 of the amorphous ribbon is slightly different, the corner portion c2 can absorb the deviation.
　図４Ａと図４Ｂは図２の鉄心３０ｂのｃ－ｃ’断面とｄ－ｄ’断面の様子を示す図である。図４Ａは、ｃ－ｃ’断面は巻鉄心３０ｂの平面領域の断面の様子を示す。図４Ａ上側が内周側であり、下側が外周側である。４枚１組のアモルファス薄帯１０が数千組積層された例の一部を示しており、各々の４枚１組のアモルファス薄帯１０には接合点２１が３箇所(３ライン)形成されている。 4A and 4B are views showing the c-c 'cross section and the d-d' cross section of the iron core 30b of FIG. In FIG. 4A, the c-c ′ cross section shows a cross section of the planar region of the wound core 30b. The upper side of FIG. 4A is the inner peripheral side, and the lower side is the outer peripheral side. A part of an example in which several thousand sets of four sheets of amorphous ribbons 10 are laminated is shown, and three junction points 21 (three lines) are formed on each set of four sheets of amorphous ribbons 10. ing.
　図４Ｂは、ｄ－ｄ’断面は巻鉄心３０ｂのコーナ部ｃ１の断面の様子を示す。図４Ｂ上側が内周側であり、下側が外周側である。４枚１組のアモルファス薄帯１０が数千枚積層されているが、コーナ部ｃ１の内周側(図４Ｂ上側)は、接合点２１が形成されていない。 FIG. 4B shows a cross-section of the corner c1 of the wound core 30b in the d-d ′ cross section. The upper side in FIG. 4B is the inner peripheral side, and the lower side is the outer peripheral side. Thousands of a set of four amorphous ribbons 10 are laminated, but the junction 21 is not formed on the inner peripheral side (upper side in FIG. 4B) of the corner portion c1.
　鉄心コーナ部ｃ１の外周側(図４Ｂ下側)は、接合点２１が形成されている。コーナ部ｃ１内周側は曲率半径が小さいため、接合点２１周辺のひずみ増大の影響を考慮し、コーナ部ｃ１には接合点２１を設けない４枚１組のアモルファス薄帯１０を配置した。 The junction 21 is formed on the outer peripheral side (lower side in FIG. 4B) of the iron core corner portion c1. Since the radius of curvature is small on the inner peripheral side of the corner portion c1, in consideration of the effect of increased strain around the junction point 21, a set of four amorphous ribbons 10 without the junction point 21 is disposed in the corner portion c1.
　また、コーナ部ｃ１外周側は曲率半径が大きいため、コーナ部ｃ１に接合点２１があってもひずみが小さく磁気性能へ影響を及ぼしにくいためである。鉄心組立の作業性を考慮し、外周側コーナ部ｃ１には、接合点２１を設けた４枚１組のアモルファス薄帯１０を配置した。他のコーナ部ｃ２からｃ４も同様である。 Also, because the outer peripheral side of the corner portion c1 has a large radius of curvature, even if the corner portion c1 has the junction point 21, the distortion is small and the magnetic performance is hardly affected. In consideration of the workability of assembling the iron core, a set of four amorphous ribbons 10 each provided with a junction 21 are arranged on the outer corner c1. The same applies to the other corners c2 to c4.
　内周側と外周側のアモルファス薄帯の曲率に合わせて、コーナ部ｃ１等の接合点２１が内周側から外周側へ直線または曲線上に並ぶように配置するとアモルファス薄帯同士の位置ズレが生じにくくなり有効である。 If the joint points 21 such as the corner portion c1 are arranged in a straight line or a curved line from the inner peripheral side to the outer peripheral side in accordance with the curvature of the amorphous ribbon on the inner peripheral side and the outer peripheral side, the positional deviation between the amorphous ribbons is It is less likely to occur and is effective.
　本実施例では、コーナ部ｃ１外周側に接合点２１を設けた４枚１組のアモルファス薄帯１０を配置したが、コーナ部の曲率半径の大きさや鉄心組み立ての作業性などを考慮し、コーナ部外周側に接合点２１を設けていない４枚１組のアモルファス薄帯１０を配置しても良い。つまり、鉄心３０ｂの平面領域を小さくし、コーナ部ｃ１等の領域を大きくするということである。 In this embodiment, a set of four amorphous ribbons 10 provided with a junction 21 on the outer peripheral side of the corner portion c1 is disposed. However, in consideration of the radius of curvature of the corner portion and the workability of the iron core assembly, A set of four amorphous ribbons 10 not provided with the junction 21 on the outer peripheral side may be arranged. That is, the area of the iron core 30b is reduced and the area of the corner portion c1 and the like is increased.
　また、図示しないが、コーナ部内周側に接合点２１を設け、溶接打点数が平面領域の打点数より少ない４枚１組のアモルファス薄帯１０を配置しても良い。つまり、鉄心中央よりも内周側のアモルファス薄帯のコーナ部ｃ１には、平面領域の接合点２１の間隔よりも広い間隔の接合点２１が配置されるということである。 Although not shown in the figure, a set of four amorphous ribbons 10 may be arranged in which a junction point 21 is provided on the inner peripheral side of the corner and the number of welding points is smaller than the number of points in the planar area. That is, the junction points 21 having an interval wider than the interval between the junction points 21 in the planar region are arranged in the corner portion c1 of the amorphous ribbon on the inner peripheral side from the center of the iron core.
　内周側は曲率の影響を受けにくいため、コーナ部ｃ１に平面領域よりも広いピッチで接合点２１を設けることで、位置ズレをより起こしにくくなる。換言すれば、コーナ部ｃ１に接合点２１を設けた場合であっても、接合打点数を少なくすることでコーナ部ｃ１のひずみを小さくできる。 Since the inner peripheral side is not easily affected by the curvature, it is more difficult to cause displacement by providing the junction points 21 at the corner c1 at a pitch wider than that of the planar region. In other words, even when the joining point 21 is provided in the corner part c1, the distortion of the corner part c1 can be reduced by reducing the number of joining points.
　また、平面領域とコーナ部との接合打点間隔、すなわち接合点２１同士の間隔を各積層ごとに調整した４枚１組のアモルファス薄帯１０を配置しても良い。つまり、内周側と外周側アモルファス薄帯で接合点２１の間隔が異なるということである。 Further, a set of four amorphous ribbons 10 in which the interval between the bonding points between the planar region and the corner portion, that is, the interval between the bonding points 21 is adjusted for each stack may be disposed. That is, the distance between the junction points 21 is different between the inner peripheral side and the outer peripheral side amorphous ribbon.
　他の変形例として、接合点２１同士の間隔を定点で形成した４枚１組のアモルファス薄帯１０配置して積層し、コーナ部ｃ１等の接合点周辺を意図的に引っ張りコーナ部ｃ１等にあたる接合点２１のいくつかを剥がして、曲げを形成したときのひずみを小さくして巻き鉄心を形成しても良い。コーナ部ｃ１に第１層と第２層が接合されていない結晶化部分を有するということである。この場合は、アモルファス薄帯の溶接プロセスが簡便となる。 As another modification, a set of four amorphous ribbons 10 each having a fixed interval between the junction points 21 are arranged and laminated, and the periphery of the junction point such as the corner portion c1 is intentionally pulled to correspond to the corner portion c1 or the like. Some of the joining points 21 may be peeled off, and the wound iron core may be formed by reducing the strain when bending is formed. This means that the corner portion c1 has a crystallized portion where the first layer and the second layer are not joined. In this case, the welding process of the amorphous ribbon is simplified.
　また、組み立てプロセスにおいてコーナ部ｃ１の接合点２１に強い応力が与えられると剥がれる程度の接合状態とすることで、組み立ての際に応力が与えられた部分は接合点２１が剥がれ、応力が少ない場合には剥がれないこととなるため、組み立ての位置ズレが生じた場合であっても応力を逃がすことができ効果的である。 In addition, when a stress is applied to the joining point 21 of the corner portion c1 in the assembly process, the joining state is such that it is peeled off. Therefore, even if the assembly is misaligned, the stress can be released, which is effective.
　４枚１組のアモルファス薄帯１０の製造方法について図５を用いて説明する。配置された４枚１組のアモルファス薄帯１０第１層の上部に溶接手段２６が配置され、溶接手段２６からレーザ２７が照射される様子が示される。また、４枚１組のアモルファス薄帯１０を切断する切断手段２８が示される。 A method of manufacturing a set of four amorphous ribbons 10 will be described with reference to FIG. The welding means 26 is arranged on the upper part of the first layer of the four amorphous ribbons 10 arranged, and a state in which the laser 27 is irradiated from the welding means 26 is shown. Also shown is a cutting means 28 for cutting a set of four amorphous ribbons 10.
　まず、４枚１組のアモルファス薄帯１０を製造するため、長手方向の所定の長さに切断された４枚のアモルファス薄帯を第１層と第２層それぞれに間隙２２ａ，２２ｂを設けて互い違いになるように配置する。この配置は、人手を介して配置しても良いが繰り返し同じ作業を行うため、搬送ロボットなどで効率良く並べ、配置すると良い。また、間隙２２ａと２２ｂの幅は、上記した生産性を考慮した大きさにすると良い。 First, in order to manufacture a set of four amorphous ribbons 10, four amorphous ribbons cut to a predetermined length in the longitudinal direction are provided with gaps 22 a and 22 b in the first layer and the second layer, respectively. Arrange them so that they are staggered. Although this arrangement may be performed manually, the same operation is repeated, so it is preferable to arrange and arrange efficiently with a transfer robot or the like. The widths of the gaps 22a and 22b are preferably set in consideration of the above-described productivity.
　アモルファス薄帯の長手方向の直線性は、およそサブミリ程度くらいのうねりが伴っている。隙間２２ａを例えば５０μｍ以下でコントロールしようとすると、精度が高い制御とモニタリングが必要となる。場合によってはうねり同士が干渉し、突合せ面が重なる場合があるため、上記した値を取るのがよい。 The longitudinal linearity of the amorphous ribbon is accompanied by a swell of about sub-millimeter. If the gap 22a is to be controlled at, for example, 50 μm or less, highly accurate control and monitoring are required. In some cases, the undulations may interfere with each other and the butt surfaces may overlap.
　次に、接合装置２６により第１層と第２層のアモルファス薄帯が重なりあう部分が接合される。接合装置２６は、代表してレーザ接合装置である場合を示し、アモルファス薄帯１に対してレーザ２７が照射されている。接合装置２６は図の上下方向に移動できるものであってもよい。または、３台配置され４枚１組のアモルファス薄帯１０が搬送される際に適宜接合することも可能である。 Next, a portion where the first and second amorphous ribbons overlap is joined by the joining device 26. The bonding device 26 is representatively a laser bonding device, and the amorphous ribbon 1 is irradiated with a laser 27. The joining device 26 may be movable in the vertical direction in the figure. Alternatively, it is also possible to appropriately join when three sets of four amorphous thin ribbons 10 are transported.
　接合された４枚１組のアモルファス薄帯１０の所定の切断位置まで所定の長さ分を搬送し、切断手段２８を用いて切断する。これにより４枚１組のアモルファス薄帯１０を構成する。 搬 送 A predetermined length is conveyed to a predetermined cutting position of a set of four amorphous ribbons 10 bonded together, and is cut using a cutting means 28. Thereby, a set of four amorphous ribbons 10 is formed.
　切断手段２８は、レーザや電気抵抗溶接等を用いて熱で切断することができる。レーザや電気抵抗溶接等の場合は、接合装置２６と同一の装置を利用できるため、別途切断装置を設けなくてよい。ダイシングソーやバンドソー等の切断手段を用いた場合には結晶化領域を低減させることができるため有効である。 The cutting means 28 can be cut with heat using laser, electric resistance welding or the like. In the case of laser, electric resistance welding, or the like, the same device as the joining device 26 can be used, and therefore a separate cutting device is not required. When a cutting means such as a dicing saw or a band saw is used, the crystallization region can be reduced, which is effective.
　切断手段２８周辺の短辺方向の接合点数を増やし、切断を容易にすることが可能である。すなわち、平面領域の短辺方向の接合点２１の数は図示されるように３点であるのに対し、切断手段２８の右側をアモルファス薄帯の短辺方向に５点等にするということである。 It is possible to increase the number of junctions in the short side direction around the cutting means 28 and facilitate cutting. That is, the number of the junction points 21 in the short side direction of the plane region is three as shown in the figure, while the right side of the cutting means 28 is set to five points in the short side direction of the amorphous ribbon. is there.
　上記した本発明の４枚１組のアモルファス薄帯１０をラッピングして鉄心３０ｂを構成する。方法の一例として、オーバラップして重ねる。この場合、結晶化した部分は接合点２１だけであるため、結晶化されていない部分同士が接触する面積が大きく、磁気回路の流れが阻害されない。 The iron core 30b is configured by wrapping a set of four amorphous ribbons 10 of the present invention described above. As an example of the method, overlapping is performed. In this case, since the crystallized portion is only the junction point 21, the area where the non-crystallized portions are in contact with each other is large, and the flow of the magnetic circuit is not hindered.
　オーバラップして重ねると４枚１組のアモルファス薄帯１０の厚み分（アモルファス薄帯２枚分の厚さ）が増えるが、下層のオーバラップ箇所をずらしてステップラップ構造とすると数千枚の４枚１組のアモルファス薄帯１０を積層してもその厚み分が増すだけとなる。したがって、鉄心３０ｂは、積層されたアモルファス薄帯の枚数の厚みに４枚１組のアモルファス薄帯１０の厚み分を足した大きさで構成することができ、鉄心の小型化が実現できる。つまり、１０００組の４枚１組アモルファス薄帯１０を用いて、ステップラップ構造とすると２００２枚分の厚みで鉄心を作ることができる。 Overlapping and overlapping increases the thickness of a set of four amorphous ribbons 10 (thickness equivalent to two amorphous ribbons), but if the overlapping area of the lower layer is shifted to a step wrap structure, several thousand sheets Even if a set of four amorphous ribbons 10 are laminated, the thickness is only increased. Therefore, the iron core 30b can be configured to have a size obtained by adding the thickness of the four amorphous ribbons 10 to the thickness of the laminated amorphous ribbons, and the core can be downsized. In other words, an iron core can be made with a thickness of 2002 sheets by using a step lap structure using 1000 sets of 4 sheets of 1 set amorphous ribbon 10.
　上記実施例についてアモルファス薄帯を代表例として説明したが、ケイ素鋼板や方向性電磁鋼板等の板状の金属部材であれば、板状金属部材であれば実施可能である。また、アモルファス薄帯やケイ素鋼板を含む概念として４枚１組の板状の金属部材は、板状の金属部材の集合体ということである。 Although the amorphous ribbon has been described as a representative example for the above embodiment, any plate-like metal member such as a silicon steel plate or a grain-oriented electrical steel plate can be used. Moreover, as a concept including an amorphous ribbon and a silicon steel plate, a set of four plate-like metal members is an aggregate of plate-like metal members.
　図６を用いて実施例２について説明する。これまで、２種類の幅ＷｌとＷｓのアモルファス薄帯を各層に２枚（合計４枚）を組み合わせた例を説明したが、各層に配置される枚数や配置方法による幅が広いアモルファス薄帯を構成する例である。 Example 2 will be described with reference to FIG. Up to this point, an example has been described in which two amorphous ribbons of two kinds of widths Wl and Ws are combined in each layer (a total of four), but an amorphous ribbon having a wide width depending on the number of sheets arranged in each layer and the arrangement method. This is an example of configuration.
　（ａ）に示すように、２種類の幅Ｗｌ、Ｗｓのアモルファス薄帯を用いた合計６枚で並べた例の６枚１組のアモルファス薄帯１０ａの断面図を示す。第１層の第１の端部５０ｃから第２の端部５０ｄに向かって、幅Ｗｌのアモルファス薄帯１００が１枚、幅Ｗｓのアモルファス薄帯２００が２枚並べられている。また、第２層の第１の端部５０ｃから第２の端部５０ｄに向かって、幅Ｗｓのアモルファス薄帯４００が２枚、幅Ｗｌのアモルファス薄帯３００が１枚並べられている。 As shown in (a), a cross-sectional view of a set of six amorphous ribbons 10a in an example in which a total of six amorphous ribbons having two types of widths Wl and Ws are arranged is shown. One amorphous ribbon 100 having a width Wl and two amorphous ribbons 200 having a width Ws are arranged from the first end 50c of the first layer toward the second end 50d. Further, two amorphous thin strips 400 having a width Ws and one amorphous thin strip 300 having a width Wl are arranged from the first end 50c of the second layer toward the second end 50d.
　また、第１層の幅Ｗｌのアモルファス薄帯１００と第２層の幅Ｗｓのアモルファス薄帯４００との重なりあう部分の一部が接合点２１で接合されており、これらのアモルファス薄帯１００と４００はバラけないようになっている。他のアモルファス薄帯も異なる層のアモルファス薄帯と重なりあう部分の一部が接合されている。 Further, a part of the overlapping portion of the amorphous ribbon 100 having the width Wl of the first layer and the amorphous ribbon 400 having the width Ws of the second layer is joined at the junction 21, 400 is not broken. In other amorphous ribbons, a part of the portion overlapping with the amorphous ribbons of different layers is joined.
　（ｂ）の例は、（ａ）と異なる順序で並べられた６枚１組のアモルファス薄帯１０ｂの断面図を示す。第１層の第１の端部５０ｃから第２の端部５０ｄに向かって、アモルファス薄帯１００が２枚、アモルファス薄帯２００が１枚並べられ、第２層は、アモルファス薄帯４００が１枚、アモルファス薄帯３００が２枚を順に並べられている。 (B) shows a cross-sectional view of a set of six amorphous ribbons 10b arranged in a different order from (a). From the first end 50c of the first layer to the second end 50d, two amorphous ribbons 100 and one amorphous ribbon 200 are arranged, and the amorphous ribbon 400 is 1 in the second layer. Sheets and two amorphous ribbons 300 are arranged in order.
　（ｃ）の例は、（ａ）、（ｂ）とは異なり８枚１組のアモルファス薄帯１０ｃの断面図を示す。第１層の第１の端部５０ｃから第２の端部５０ｄに向かって、アモルファス薄帯１００が２枚、アモルファス薄帯２００が２枚並べられ、第２層は、アモルファス薄帯４００が１枚、アモルファス薄帯３００が１枚、アモルファス薄帯４００が１枚、アモルファス薄帯３００が１枚を順に並べられている。 The example of (c) shows a cross-sectional view of a set of eight amorphous ribbons 10c, unlike (a) and (b). Two amorphous ribbons 100 and two amorphous ribbons 200 are arranged from the first end 50c of the first layer toward the second end 50d, and the amorphous ribbon 400 is 1 in the second layer. One sheet, one amorphous ribbon 300, one amorphous ribbon 400, and one amorphous ribbon 300 are arranged in order.
　これらの実施例１で説明した４枚１組のアモルファス薄帯１０や図６の６枚１組のアモルファス薄帯１０ａ，１０ｂ、８枚１組のアモルファス薄帯１０ｃは、それぞれ接合点２１が３、５、５、７点である。 In the set of four amorphous ribbons 10 described in the first embodiment, the set of six amorphous ribbons 10a and 10b, and the set of eight amorphous ribbons 10c in FIG. 5, 5, and 7 points.
　つまり、アモルファス薄帯が４枚の場合は接合点２１が３点であり６枚の場合は５点であることから、各アモルファス薄帯がバラけないようにするための最小の接合点の数は、使用するアモルファス薄帯の枚数をｎとすると、ｎ－１の関係である。つまり、アモルファス薄帯の重なりあう部分を使用枚数より１少ない数で接合することで、幅が広い１枚のアモルファス薄帯として鉄心材料とすることができる。 That is, when the number of amorphous ribbons is four, the number of junction points 21 is three, and when the number of amorphous ribbons is six, the number of junction points 21 is the minimum. Is a relationship of n-1 where n is the number of amorphous ribbons used. In other words, by joining the overlapping portions of the amorphous ribbons by a number one less than the number of sheets used, it is possible to make the core material as one wide amorphous ribbon.
　次に、（ｄ）について説明するが、他の例と異なるのは３種類目の幅Ｗｍのアモルファス薄帯５００を用いる点である。他の例と同様に第１層のアモルファス薄帯と第２の層のアモルファス薄帯が重なりあう部分を有するように配置し、重なりあう部分の一部を接合されている。このようにアモルファス薄帯の幅は２種類だけでなく３種類でも実施できる。また、並べ方は一例を示すものであり、（ａ）、（ｂ）のように他の順序で並べることもできる。また、３種類の幅だけでなく４種類以上であっても同様に実施でき、任意の幅の鉄心材料を構成することができる。 Next, (d) will be described. The difference from the other examples is that a third type of amorphous ribbon 500 having a width Wm is used. Like the other examples, the first layer amorphous ribbon and the second layer amorphous ribbon are arranged so as to have an overlapping portion, and a part of the overlapping portion is joined. Thus, the width of the amorphous ribbon can be implemented not only with two types but also with three types. Moreover, the way of arrangement shows an example, and it can be arranged in other order as shown in (a) and (b). Further, not only three types of width but also four or more types can be implemented in the same manner, and an iron core material having an arbitrary width can be configured.
　このように（ａ）から（ｃ）の例は、第１層と第２層とで、同一のアモルファス薄帯の幅や枚数の組み合わせで構成されるため、アモルファス薄帯の幅の総和を合わせやすい。
つまり、層ごとに並べ順が違っていても、使用するアモルファス薄帯が層ごとに同じ組み合わせであり、端面を揃えることが容易となる。端面を揃えることで鉄心としての占積率が向上する。 As described above, since the examples (a) to (c) are configured by the combination of the same amorphous ribbon width and the number of sheets in the first layer and the second layer, the total width of the amorphous ribbons is adjusted. Cheap.
That is, even if the arrangement order is different for each layer, the amorphous ribbons to be used are the same combination for each layer, and it is easy to align the end faces. The space factor as an iron core improves by aligning the end faces.
　次に、（ｅ）の例について説明する。これまでは各層に異なる幅のアモルファス薄帯を用いて１組のアモルファス薄帯を構成する例を説明したが、各層で同じ幅のアモルファス薄帯を用いる例を説明する。 Next, the example (e) will be described. So far, an example in which a set of amorphous ribbons is formed using amorphous ribbons having different widths in each layer, but an example in which amorphous ribbons having the same width are used in each layer will be described.
　第１層の第１の端部５０ｃから順に、幅Ｗｓのアモルファス薄帯２００が３枚、第２層の第１の端部５０ｃから順に、幅Ｗｌのアモルファス薄帯３００が２枚並べられている。これらの重なりあう部分の一部が接合点２１により接合されている。少なくとも２種類の幅のアモルファス薄帯の組み合わせにより、本発明の思想を実施することができる。 Three amorphous thin strips 200 having a width Ws are arranged in order from the first end portion 50c of the first layer, and two amorphous thin strips 300 having a width Wl are arranged in order from the first end portion 50c of the second layer. Yes. A part of these overlapping portions is joined by a joining point 21. The idea of the present invention can be implemented by a combination of at least two widths of amorphous ribbon.
　さらに、変形例として（ｆ）の例について説明する。６枚１組のアモルファス薄帯１０ｆの断面を示す。使用するアモルファス薄帯は（ｅ）の例と同様である。違いは、第１層と第２層の第１の端部５０ｃ側が揃っているが、第２の端部５０ｄ側が揃っていない。 Furthermore, the example of (f) will be described as a modification. A cross section of a set of six amorphous ribbons 10f is shown. The amorphous ribbon used is the same as in the example of (e). The difference is that the first end 50c side of the first layer and the second layer are aligned, but the second end 50d side is not aligned.
　この場合は、鉄心として組み立てた際に、第２の端部５０ｄ側を薄くすることができる。鉄心と巻線コイルとの間にスペーサや緩衝部材を挟む等の場合に有効である。このように、端部を第１の端部５０ｃと第２の端部５０ｄは必ずしも一致または揃えなくとも本発明を実施することができる。 In this case, the second end 50d side can be thinned when assembled as an iron core. This is effective when a spacer or a buffer member is sandwiched between the iron core and the winding coil. In this way, the present invention can be implemented even if the first end portion 50c and the second end portion 50d are not necessarily aligned or aligned.
　また、各層のアモルファス薄帯を全て同じ幅のアモルファス薄帯として実施することも可能である。この場合は第１層と第２層のアモルファス薄帯をそれぞれ重なりあう部分を設けるために、第１の端部と第２の端部が揃わないこととなる。鉄心の両端部に丸みを持たせたる、または端部に段差を有する段付き鉄心とする場合には有効な実施例である。 It is also possible to implement the amorphous ribbons of each layer as amorphous ribbons of the same width. In this case, since the portions where the amorphous ribbons of the first layer and the second layer overlap each other are provided, the first end and the second end are not aligned. This is an effective embodiment in the case where the both ends of the iron core are rounded or the stepped iron core has a step at the end.
　これらの方法で、幅が広いアモルファス鉄心を製造することができる。また、接合点２１を設けるため、鉄心組み立ての際に、アモルファス薄帯の位置ズレが生じにくくなるため、鉄心性能のバラ付きを低減できる。さらには、人手による突き合わせ面の間隙の調整が不要となるため、生産効率を向上させることが可能となる。 A wide amorphous iron core can be manufactured by these methods. In addition, since the junction point 21 is provided, it is difficult for the amorphous ribbon to be misaligned during the assembly of the iron core, so that variations in the iron core performance can be reduced. Furthermore, since it is not necessary to manually adjust the gap between the butted surfaces, production efficiency can be improved.
　また、幅広に形成し接合した薄帯（４枚１組のアモルファス薄帯１０）は元のアモルファス薄帯の厚みにオーバーラップ分の増加であるため影響は小さく、鉄心の小型化に寄与する。 Also, the thin ribbons that are formed and joined together (a set of four amorphous ribbons 10) are less affected because of the increase in the overlap of the original amorphous ribbon thickness, contributing to the miniaturization of the iron core.
　さらに、４枚１組のアモルファス薄帯１０の接合点２１は結晶化しているが、磁気回路の流れに対して小さな断面積で接合しているため、結晶化した接合箇所の影響を抑えることができる。ひいては鉄心や変圧器として磁気損失の影響は小さくすることができる。 Furthermore, although the junction point 21 of the set of four amorphous ribbons 10 is crystallized, since it is bonded with a small cross-sectional area with respect to the flow of the magnetic circuit, the influence of the crystallized junction point can be suppressed. it can. As a result, the influence of magnetic loss can be reduced as an iron core or a transformer.
　上記した各実施例の構成は、変圧器及び変圧器の鉄心のみならず、鉄心とコイルを有するリアクトル（静止誘導機器）にも本発明を適用可能である。この場合も製造されたリアクトルの鉄心ごとの占積率のバラ付きを小さくすることができ、ひいては、鉄心特性が安定したリアクトルを提供することを実現できる。
　上記記載は実施例についてなされたが、本発明はそれに限らず、本発明の精神と添付の請求の範囲の範囲内で種々の変更および修正をすることができることは当業者に明らかである。 The configuration of each of the above embodiments can be applied not only to the transformer and the iron core of the transformer, but also to a reactor (stationary induction device) having an iron core and a coil. Also in this case, it is possible to reduce the variation in the space factor of each manufactured reactor core, and thus to provide a reactor having stable core characteristics.
While the above description has been made with reference to exemplary embodiments, it will be apparent to those skilled in the art that the invention is not limited thereto and that various changes and modifications can be made within the spirit of the invention and the scope of the appended claims.
　１、３　幅が広いアモルファス薄帯
　２、４　幅が狭いアモルファス薄帯
　１０、１０ａ　４枚１組のアモルファス薄帯
　２１、２１ａ　接合点
　３０ａ　外鉄心
　３０ｂ、３０ｃ　内鉄心
　４０ａ、４０ｂ、４０ｃ　コイル
　５０　幅広鉄心の断面
　ｃ１、ｃ２、ｃ３、ｃ４　コーナ部 1, 3 Amorphous ribbon with a wide width 2, 4 Amorphous ribbon with a narrow width 10, 10a A set of four amorphous ribbons 21, 21a Joint point 30a Outer core 30b, 30c Inner core 40a, 40b, 40c Coil 50 Wide Cross section of iron core c1, c2, c3, c4 Corner

Claims (20)

  1. 　巻鉄心と、前記巻鉄心に巻き回されたコイルとを有する変圧器であって、
    　前記巻鉄心は、板状の金属部材の集合体が積層されており、
    　前記板状の金属部材の集合体は、前記金属部材が隣り合うように２つ以上並べられた第１の層と、第２の層とを有し、
    　前記第１の層の金属部材と接触する前記第２の層の金属部材とが重なりあう部分に接合部を有していること
    　を特徴とする変圧器。     A transformer having a wound core and a coil wound around the wound core,
    The wound core has a stack of plate-shaped metal members laminated thereon,
    The assembly of the plate-shaped metal members has a first layer and a second layer arranged such that two or more of the metal members are adjacent to each other,
    A transformer having a junction at a portion where the metal member of the second layer in contact with the metal member of the first layer overlaps.
  2. 　請求項１に記載の変圧器において、
    　前記第１の層の金属部材と前記第２の層の金属部材とが前記接合部を介して交互に接続されたこと
    　を特徴とする変圧器。     The transformer according to claim 1,
    The transformer according to claim 1, wherein the metal member of the first layer and the metal member of the second layer are alternately connected via the joint.
  3. 　請求項２に記載の変圧器において、
    　前記第１の層の金属部材の数と前記第２の層の金属部材の数の和よりも１少ない数以上の前記接合部が前記金属部材の短辺方向に設けられたこと
    　を特徴とする変圧器。     The transformer according to claim 2, wherein
    One or more of the joints less than the sum of the number of metal members of the first layer and the number of metal members of the second layer are provided in the short side direction of the metal member. Transformer.
  4. 　請求項２に記載の変圧器において、
    　前記第１の層の金属部材は２以上の幅の金属部材を有していること
    　を特徴とする変圧器。     The transformer according to claim 2, wherein
    The metal member of the first layer has a metal member having a width of 2 or more.
  5. 　請求項４に記載の変圧器において、
    　前記第２の層の金属部材は、前記第１の層の金属部材と同じ幅の金属部材を有していることを特徴とする変圧器。     The transformer according to claim 4,
    The metal member of the second layer has a metal member having the same width as the metal member of the first layer.
  6. 　請求項５に記載の変圧器において、
    　前記第１の層の金属部材のうち第１の端部側の金属部材の幅と、前記第２の層の金属部材のうち第２の端部側の金属部材の幅が同一であること
    　を特徴とする変圧器。     The transformer according to claim 5,
    The width of the metal member on the first end side among the metal members on the first layer is the same as the width of the metal member on the second end side among the metal members on the second layer. Characteristic transformer.
  7. 　請求項４に記載の変圧器において、
    　前記接合部は、前記金属部材の長手方向に異なる間隔で設けられていること
    　を特徴とする変圧器。     The transformer according to claim 4,
    The junction is provided at different intervals in the longitudinal direction of the metal member.
  8. 　請求項４に記載の変圧器において、
    　前記巻鉄心の径方向に複数の前記接合部が設けられており、
    　前記巻鉄心のコーナ部よりも平面領域に前記接合部が多く設けられたこと
    　を特徴とする変圧器。     The transformer according to claim 4,
    A plurality of the joints are provided in the radial direction of the wound core;
    A transformer having a larger number of joints in a planar area than a corner of the wound core.
  9. 　請求項８に記載の変圧器において、
    　前記巻鉄心のコーナ部において、前記第１の金属部材と前記第２の金属部材が接合されていないこと
    　を特徴とする変圧器。     The transformer according to claim 8,
    In the corner portion of the wound iron core, the first metal member and the second metal member are not joined.
  10. 　請求項４に記載の変圧器において、
    　前記巻鉄心の側面である前記第１の層の第１の端部側に配置される金属部材の端面と、前記第２の層の第１の端部側に配置される金属部材の端面が揃うように配置されたこと
    　を特徴とする変圧器。     The transformer according to claim 4,
    An end surface of the metal member disposed on the first end portion side of the first layer, which is a side surface of the wound core, and an end surface of the metal member disposed on the first end portion side of the second layer. Transformers characterized by being arranged in a line.
  11. 　請求項４に記載の変圧器において、
    　前記金属部材はアモルファス薄帯であること
    　を特徴とする変圧器。     The transformer according to claim 4,
    The transformer is characterized in that the metal member is an amorphous ribbon.
  12. 　請求項１１に記載の変圧器において、
    　前記接合部は、前記アモルファス薄帯が結晶化されていること
    　を特徴とする変圧器。     The transformer according to claim 11,
    The transformer is characterized in that the amorphous ribbon is crystallized in the junction.
  13. 　請求項１１に記載の変圧器において、
    　前記巻鉄心のラッピング部分は、前記接合部と異なる部分同士が接触されていること
    　を特徴とする変圧器。     The transformer according to claim 11,
    The wrapping portion of the wound iron core is in contact with portions different from the joint portion.
  14. 　金属部材が巻き回された鉄心であって、
    　前記板状の金属部材の集合体が積層されており、
    　前記板状の金属部材の集合体は、前記金属部材が隣り合うように２つ以上並べられた第
    １の層と、第２の層とを有し、
    　前記第１の層の金属部材と接触する前記第２の層の金属部材とが重なりあう部分に接合部を有していること
    　を特徴とする鉄心。     An iron core wound with a metal member,
    An assembly of the plate-like metal members is laminated,
    The assembly of the plate-shaped metal members has a first layer and a second layer arranged such that two or more of the metal members are adjacent to each other,
    An iron core comprising a joint portion at a portion where the metal member of the second layer contacting the metal member of the first layer overlaps.
  15. 　金属部材が巻き回された鉄心であって、
    　第１の幅の金属部材と前記第１の幅より短い第２の幅の金属部材が第１の層に隣り合うように並べられており、
    　第３の幅の金属部材と前記第３の幅より長い第４の幅の金属部材が第２の層に隣り合うように並べられており、
    　前記第１の幅の金属部材と接触する前記第３の層の金属部材とが重なりあう部分に接合部を有していること
    　を特徴とする鉄心。     An iron core wound with a metal member,
    A metal member having a first width and a metal member having a second width shorter than the first width are arranged adjacent to the first layer;
    A metal member having a third width and a metal member having a fourth width longer than the third width are arranged adjacent to the second layer;
    The iron core according to claim 1, wherein a joint portion is provided at a portion where the metal member of the third layer contacting the metal member having the first width overlaps.
  16. 　請求項１４または１５に記載の鉄心であって、
    　前記金属部材はアモルファス金属部材であること
    　を特徴とする鉄心。     The iron core according to claim 14 or 15,
    The iron core, wherein the metal member is an amorphous metal member.
  17. 　アモルファス金属部材であって、
    　前記アモルファス金属部材は、前記アモルファス金属部材が隣り合うように２つ以上並べられた第１の層と、第２の層とを有し、
    　前記第１の層のアモルファス金属部材と接触する前記第２の層のアモルファス金属部材とが重なりあう部分に接合部を有していること
    　を特徴とするアモルファス金属部材。     An amorphous metal member,
    The amorphous metal member has a first layer and a second layer in which two or more amorphous metal members are arranged next to each other, and
    An amorphous metal member having a joint at a portion where the amorphous metal member of the second layer contacting the amorphous metal member of the first layer overlaps.
  18. 　アモルファス金属部材であって、
    　第１の幅のアモルファス金属部材と前記第１の幅より短い第２の幅のアモルファス金属部材が第１の層に隣り合うように並べられており、
    　第３の幅のアモルファス金属部材と前記第３の幅より長い第４の幅のアモルファス金属部材が第２の層に隣り合うように並べられており、
    　前記第１の幅のアモルファス金属部材と接触する前記第３の層のアモルファス金属部材とが重なりあう部分に接合部を有していること
    　を特徴とするアモルファス金属部材。     An amorphous metal member,
    An amorphous metal member having a first width and an amorphous metal member having a second width shorter than the first width are arranged adjacent to the first layer;
    An amorphous metal member having a third width and an amorphous metal member having a fourth width longer than the third width are arranged adjacent to the second layer;
    An amorphous metal member having a joint at a portion where the amorphous metal member of the third layer contacting the amorphous metal member having the first width overlaps.
  19. 　請求項１８に記載のアモルファス金属部材において、
    　前記第２の幅のアモルファス金属部材と接触する前記第３の幅のアモルファス金属部材とが重なりあう部分に接合部を有し、
    　前記第１の幅のアモルファス金属部材と接触する前記第４の幅のアモルファス金属部材とが重なりあう部分に接合部を有していること
    　を特徴とするアモルファス金属部材。     The amorphous metal member according to claim 18,
    A joining portion at a portion where the third width amorphous metal member contacting the second width amorphous metal member overlaps;
    An amorphous metal member, comprising: a joining portion at a portion where the fourth width amorphous metal member contacting the first width amorphous metal member overlaps.
  20. 　請求項１９に記載のアモルファス金属部材において、
    　前記接合部は、結晶化した領域を有していること
    　を特徴とするアモルファス金属部材。     The amorphous metal member according to claim 19,
    The amorphous metal member, wherein the joint has a crystallized region.
PCT/JP2017/020980 2016-11-18 2017-06-06 Transformer, iron core, and amorphous metal member WO2018092335A1 (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3399365A (en) * 1964-11-24 1968-08-27 Vadim Subovici Wound magnetic core having staggered strips
JPS5874029A (en) * 1981-10-28 1983-05-04 Mitsubishi Electric Corp Wide width laminated amorphous manufacturing apparatus
US4413406A (en) * 1981-03-19 1983-11-08 General Electric Company Processing amorphous metal into packets by bonding with low melting point material
JPS6115312A (en) * 1984-06-30 1986-01-23 Toshiba Corp Manufacture of wound core
JP2013098349A (en) * 2011-11-01 2013-05-20 Hitachi Industrial Equipment Systems Co Ltd Amorphous core transformer

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3399365A (en) * 1964-11-24 1968-08-27 Vadim Subovici Wound magnetic core having staggered strips
US4413406A (en) * 1981-03-19 1983-11-08 General Electric Company Processing amorphous metal into packets by bonding with low melting point material
JPS5874029A (en) * 1981-10-28 1983-05-04 Mitsubishi Electric Corp Wide width laminated amorphous manufacturing apparatus
JPS6115312A (en) * 1984-06-30 1986-01-23 Toshiba Corp Manufacture of wound core
JP2013098349A (en) * 2011-11-01 2013-05-20 Hitachi Industrial Equipment Systems Co Ltd Amorphous core transformer

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