JPH0272603A - Core - Google Patents
CoreInfo
- Publication number
- JPH0272603A JPH0272603A JP22354088A JP22354088A JPH0272603A JP H0272603 A JPH0272603 A JP H0272603A JP 22354088 A JP22354088 A JP 22354088A JP 22354088 A JP22354088 A JP 22354088A JP H0272603 A JPH0272603 A JP H0272603A
- Authority
- JP
- Japan
- Prior art keywords
- rotor
- core
- sintering
- magnetic
- powder metal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000005291 magnetic effect Effects 0.000 claims abstract description 21
- 238000005245 sintering Methods 0.000 claims abstract description 15
- 239000006247 magnetic powder Substances 0.000 claims abstract description 14
- 239000002184 metal Substances 0.000 claims abstract description 12
- 229910052751 metal Inorganic materials 0.000 claims abstract description 12
- 238000004804 winding Methods 0.000 claims abstract description 8
- 239000000696 magnetic material Substances 0.000 claims abstract description 5
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 4
- 239000000956 alloy Substances 0.000 claims abstract description 4
- 238000000748 compression moulding Methods 0.000 claims description 10
- 229910052710 silicon Inorganic materials 0.000 claims description 4
- 239000000843 powder Substances 0.000 abstract description 2
- 230000015572 biosynthetic process Effects 0.000 abstract 4
- 239000000126 substance Substances 0.000 abstract 3
- 238000001514 detection method Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000010030 laminating Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 229910000889 permalloy Inorganic materials 0.000 description 2
- 229910000976 Electrical steel Inorganic materials 0.000 description 1
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 1
- 240000002853 Nelumbo nucifera Species 0.000 description 1
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000005292 diamagnetic effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000005415 magnetization Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000000135 prohibitive effect Effects 0.000 description 1
Landscapes
- Soft Magnetic Materials (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
Description
【発明の詳細な説明】
ａ 産業上の利用分野
本発明は、コアに関し、特に、磁性体部を、圧縮成形あ
るいは焼結により形成された磁性粉末金属で構成し、う
ず電流損の少ない低価格のコアを得るための新規な改良
に関する。DETAILED DESCRIPTION OF THE INVENTION a. Industrial Application Field The present invention relates to a core, and in particular, the present invention relates to a core in which the magnetic body portion is made of a magnetic powder metal formed by compression molding or sintering, and is low in cost and has low eddy current loss. Concerning new improvements to obtain the core of.
ｂ、従来の技術
従来、用いられていたこの種のコアとしては、種々の構
成が提案されているが、その中で代表的なものについて
述へると、ここではその構成を開示する文献名等を挙げ
ていないが、第５図にて示す一般に使用されているロー
タのコアを開示することができる。b. Conventional Technology Various configurations have been proposed for this type of core that has been used in the past, but here we will discuss some of the most representative ones. Although not listed, a commonly used rotor core shown in FIG. 5 can be disclosed.
すなわち、第５図におけるロータ１は、平面形状がほぼ
工の字形をなすと共に、けい素鋼板又はパーマロイなど
からなる薄板１ａを多数積層した構成よりなり、その中
心には、回転軸（図示せず）を貫通して設けるための軸
孔２が形成されている。That is, the rotor 1 in FIG. 5 has a planar shape that is approximately square, and is constructed by laminating a large number of thin plates 1a made of silicon steel plates or permalloy, and has a rotating shaft (not shown) in the center. ) is formed to penetrate therethrough.
さらに、これらの各薄板１ａによって形成され？
た磁性体部３を構成しており、この磁性体部３の両端部
に形成された一対の案内凹部３ａには、図示しないロー
タ巻線が巻回されている。Furthermore, what is formed by each of these thin plates 1a? A rotor winding (not shown) is wound around a pair of guide recesses 3a formed at both ends of the magnetic body 3.
Ｃ０発明が解決しようとする課題
従来のコアは、以上のように構成されていたなめ、次の
ような問題点を有していた。Problems to be Solved by the C0 Invention Since the conventional core was configured as described above, it had the following problems.
すなわち、磁性体部３が多数の薄板１ａによって構成さ
れているため、これらの各薄板１ａを積層して磁性体部
３を形成するためには、治工具を用いて各薄板１ａを接
着や溶接の手段によって一体化しなければならず、この
一体止作業は、極めて困難な且つ時間とコストを要する
作業であった。That is, since the magnetic body part 3 is composed of a large number of thin plates 1a, in order to form the magnetic body part 3 by laminating each of these thin plates 1a, each thin plate 1a must be bonded or welded using a jig. This work was extremely difficult, time consuming, and costly.
又、−枚一枚の薄板１ａによって、任意の形状のロータ
スはステータ等のコアを作成するため、コアの外形形状
が不均一となりやすく、又、薄板１ａをプレス加工によ
って打抜くため、大量生産時には、プレス型の保持及び
交換に多額のコストを要し、低価格のコアを提供するこ
とが不可能であった。Furthermore, since the core of a stator, etc. for a Lotus of any shape is created using each thin plate 1a, the outer shape of the core tends to be uneven, and since the thin plate 1a is punched out by press processing, mass production is difficult. At times, the cost of maintaining and replacing press dies has been prohibitive and it has been impossible to provide low cost cores.
本発明は、以上のような問題点を解決するためになされ
たもので、特に、磁性体部は、磁性粉末合金を圧縮成形
あるいは焼結により形成された一体成形体で構成し、う
ず電流損の少ない低価格の構成よりなるコアを提供する
ことを目的とする。The present invention has been made to solve the above-mentioned problems. In particular, the magnetic body part is composed of an integral molded body formed by compression molding or sintering of a magnetic powder alloy, and the eddy current loss is reduced. The objective is to provide a core consisting of a low-cost configuration with few.
８０課題を解決するための手段
本発明によるコアは、巻線を巻回する磁性体部が、磁性
粉末金属の圧縮成形あるいは焼結により一体に形成され
た構成である。80 Means for Solving the Problems The core according to the present invention has a structure in which the magnetic body part around which the winding is wound is integrally formed by compression molding or sintering of magnetic powder metal.
０１作用
本発明によるコアにおいては、磁性体部が、磁性粉末金
属を圧縮成形あるいは焼結により一体に形成した構成よ
りなっているため、この磁性粉末金属は１個１個の細か
い粒子を固めたものであり、各粒子は各々を独立して、
絶縁された状態で、従来の薄板を積層したものと同様に
、うず電流損を小さくすることができる。01 Effect In the core according to the present invention, since the magnetic body part is composed of a magnetic powder metal integrally formed by compression molding or sintering, the magnetic powder metal is formed by solidifying fine particles one by one. and each particle independently
In an insulated state, eddy current loss can be reduced in the same way as with conventional laminated thin plates.
又、圧縮型又は焼結型を最初に作れば、後は、外形形状
の均一な任意の形状のコアを安価に大量に作ることがで
きる。Furthermore, if a compression mold or a sintering mold is made first, then cores of any desired shape with a uniform outer shape can be manufactured in large quantities at low cost.
ｆ、実施例
以下、図面と共に本発明によるコアの好適な実施例につ
いて詳細に説明する。f. Examples Hereinafter, preferred embodiments of the core according to the present invention will be described in detail with reference to the drawings.
尚、従来例と同−又は同等部分には、同一符号を付して
説明する。It should be noted that the same or equivalent parts as in the conventional example will be described with the same reference numerals.
第１図から第４国道は、本発明によるコアを示すための
もので、第１図及び第２図はロータを示す斜視図、第３
図はステータを示す斜視図、第４図は本発明のコアを応
用した回転検出器を示す断面図である。1 to 4 are for showing the core according to the present invention, and FIGS. 1 and 2 are perspective views showing the rotor, and FIG. 3 is a perspective view showing the rotor.
The figure is a perspective view showing a stator, and FIG. 4 is a sectional view showing a rotation detector to which the core of the present invention is applied.
まず、第１図に示すロータ１は、平面形状がほぼ工の字
形をなすと共に、その中心には、回転軸（図示せず）を
貫通して設けるための軸孔２が形成されている。First, a rotor 1 shown in FIG. 1 has a substantially square-shaped planar shape, and a shaft hole 2 is formed in the center thereof to allow a rotation shaft (not shown) to pass therethrough.
さらに、このロータ１を構成する磁性体部３は、磁性粉
末金属を圧縮成形あるいは焼結によって形成したもので
、この磁性体部３の両端部に形成された一対の案内凹部
３ａには、図示しないロータ巻線が巻回されている。Further, the magnetic body part 3 constituting the rotor 1 is formed by compression molding or sintering of magnetic powder metal, and a pair of guide recesses 3a formed at both ends of the magnetic body part 3 have a shape shown in the figure. No rotor winding is wound.
又、第２図に示すロータ１の磁性体部３は、前述と同様
に磁性粉末金属を圧縮成形あるいは焼結によって形成し
たもので、この磁性体部３は全体形状がほぼ円筒体をな
し、その中心に軸孔２を有すると共に、その外側部３ｂ
には、軸方向に形成された多数のスロット４が形成され
、これらのスロット４に巻線（図示せず）が設けられて
いる。Further, the magnetic body part 3 of the rotor 1 shown in FIG. 2 is formed by compression molding or sintering of magnetic powder metal as described above, and the overall shape of the magnetic body part 3 is approximately cylindrical. It has a shaft hole 2 in its center, and its outer part 3b
A number of slots 4 are formed in the axial direction, and windings (not shown) are provided in these slots 4 .
さらに、第３図に示すステータ５の磁性体部３は、前述
と同様に磁性粉末金属を圧縮成形あるいは焼結によって
形成したもので、この磁性体部３は全体形状がほぼ円筒
体をなし、その中心にロータ受は孔６を有すると共に、
その内側部３ｃには、軸方向に形成された多数のスロッ
ト４が形成され、これらのスロット４に巻線（図示せず
）が設けられている。Furthermore, the magnetic body part 3 of the stator 5 shown in FIG. 3 is formed by compression molding or sintering of magnetic powder metal in the same manner as described above, and the overall shape of this magnetic body part 3 is approximately cylindrical. The rotor holder has a hole 6 in its center, and
A large number of slots 4 formed in the axial direction are formed in the inner part 3c, and windings (not shown) are provided in these slots 4.
次に、前述の磁性粉末金属としては、日本鋼管製のＦｅ
−６，５Ｗ％Ｓｉ軟磁性材を用いている。Next, as the magnetic powder metal mentioned above, Fe manufactured by Nippon Kokan Co., Ltd.
-6.5W% Si soft magnetic material is used.
このＦｅ−６，５Ｗ％Ｓｉ軟磁性材は、Ｓｉを６．５Ｗ
％含有する材料で透磁率、磁歪及び鉄損に優れ、中及び
高周波数域でアモルファス合金及びパーマロイと代替で
きる材料であり、本願の発明者はこの優れた特性に着目
し、このＦｅ−６，５Ｗ％Ｓｉ軟磁性材を薄板化したも
のを用いず、これを粉末合金化し、さらに、圧縮成形あ
るいは焼結処理によって実験的に製造した結果、第１図
から第３図にて示すロータ１及びステータ５を得ること
ができた。This Fe-6.5W%Si soft magnetic material
%, it is a material that has excellent magnetic permeability, magnetostriction, and iron loss, and can replace amorphous alloys and permalloy in the medium and high frequency ranges.The inventor of this application focused on this excellent property, and As a result of experimentally manufacturing the 5W% Si soft magnetic material by powder alloying it without using a thin plate, and then by compression molding or sintering, the rotor 1 and the rotor shown in FIGS. 1 to 3 were produced. I was able to obtain stator 5.
又、前述のロータ３及びステータ５を用いて、レゾルバ
、シンクロ及び各種モータ等を実験的に製造してみた結
果、特性的にも十分な結果が得られ、実用化の可能性を
確認することができた。Furthermore, as a result of experimentally manufacturing resolvers, synchronizers, various motors, etc. using the rotor 3 and stator 5 described above, sufficient results were obtained in terms of characteristics, confirming the possibility of practical application. was completed.
又、コアとしては、回転機に限らず、他の電磁装置のコ
アに応用できることは述べるまでもないことである。It goes without saying that the core is not limited to rotating machines, but can be applied to cores of other electromagnetic devices.
又、第４図に示す構成は、本発明によるコアを、レゾル
バ及びシンクロ等の回転検出器７の回転検出部８に応用
した例を示すもので、前述の第２図で示すロータ３及び
第４図で示すステータ５を用い、各々検出用巻線９ａ及
び９ｂを設けている。The configuration shown in FIG. 4 is an example in which the core according to the present invention is applied to a rotation detection section 8 of a rotation detector 7 such as a resolver or a synchronizer. The stator 5 shown in FIG. 4 is provided with detection windings 9a and 9b, respectively.
このロータ３を有する回転軸１０には、回転トランス部
１０のトランス用ロータ１１が設けられ、このトランス
用ロータ１１に対応するケース１２の内壁１２ａにはト
ランス用ステータ１３が設けられている。A rotor 11 for a transformer of a rotary transformer section 10 is provided on a rotating shaft 10 having this rotor 3, and a stator 13 for a transformer is provided on an inner wall 12a of a case 12 corresponding to this rotor 11 for a transformer.
又、前述の回転検出部８と回転トランス部１０との間に
は、超電導材よりなる超電導シール板１４が配設され、
回転検出部８と回転トランス部１０間の不要な磁化作用
を、この超電導シール板１４の反磁性特性により遮蔽し
ている構成である。Further, a superconducting seal plate 14 made of a superconducting material is disposed between the rotation detecting section 8 and the rotating transformer section 10.
The structure is such that unnecessary magnetization between the rotation detection section 8 and the rotation transformer section 10 is shielded by the diamagnetic property of the superconducting seal plate 14.
８、発明の効果
本発明によるコアは、以上のように構成されているため
、次のような効果を得ることができる。8. Effects of the invention Since the core according to the invention is configured as described above, the following effects can be obtained.
すなわち、コアを構成するために多数の薄板を積層する
必要がなく、圧縮成形又は焼結によって一体成形できる
と共に、各粒子が各々独立して絶縁されているため、う
ず電流損の少ない加工性に優れたコアを安価に大量に提
供できるものである。In other words, there is no need to laminate a large number of thin plates to form the core, and it can be integrally formed by compression molding or sintering.In addition, each particle is independently insulated, resulting in easy workability with low eddy current loss. This makes it possible to provide high-quality cores in large quantities at low cost.
第１図から第３図は、本発明によるコアを示すもので、
第１図はロータを示す斜視図、第２図はロータの他の実
施例を示す斜視図、第３図はステータを示す斜視図、第
４図は本発明によるコアを応用した回転検出器を示す断
面図、第５図は従来のコアとしてのロータを示す斜視図
である。
１はコア、３はロータ、３ｂは外側部、３Ｃは内側部、
４はスリット、５はステータである。
特許出願人 多摩川精機株式会社
代 理 入 曽
我 道 照
算４図1 to 3 show a core according to the invention,
Fig. 1 is a perspective view showing a rotor, Fig. 2 is a perspective view showing another embodiment of the rotor, Fig. 3 is a perspective view showing a stator, and Fig. 4 is a rotation detector to which the core according to the present invention is applied. The sectional view shown in FIG. 5 is a perspective view showing a rotor as a conventional core. 1 is the core, 3 is the rotor, 3b is the outer part, 3C is the inner part,
4 is a slit, and 5 is a stator. Patent applicant: Tamagawa Seiki Co., Ltd. Representative: Michi Soga Comparison figure 4
Claims (5)
属の圧縮成形あるいは焼結により一体に構成されている
ことを特徴とするコア。(1). A core characterized in that a magnetic body part (3) around which a winding is wound is integrally formed by compression molding or sintering of magnetic powder metal.
形をなすロータを構成することを特徴とする特許請求の
範囲第１項記載のコア。(2). 2. The core according to claim 1, wherein the magnetic body portion (3) constitutes a rotor having a substantially E-shaped planar shape.
その外側部（３ｂ）に形成された複数のスロット（４）
を有するロータ（１）を構成することを特徴とする特許
請求の範囲第１項記載のコア。(3). The magnetic body part (3) has a cylindrical shape as a whole,
A plurality of slots (4) formed in its outer part (3b)
A core according to claim 1, characterized in that it constitutes a rotor (1) having a rotor (1).
その内側部（３ｃ）に形成された複数のスロット（４）
を有するステータ（５）を構成することを特徴とする特
許請求の範囲第１項記載のコア。(4). The magnetic body part (3) has a cylindrical shape as a whole,
A plurality of slots (4) formed in its inner part (3c)
Core according to claim 1, characterized in that it constitutes a stator (5) having:
磁性材よりなる特許請求の範囲第１項乃至第４項の何れ
かに記載のコア。(5). The core according to any one of claims 1 to 4, wherein the magnetic powder alloy is made of a Fe-6.5W%Si soft magnetic material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63223540A JP2821480B2 (en) | 1988-09-08 | 1988-09-08 | Rotor core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63223540A JP2821480B2 (en) | 1988-09-08 | 1988-09-08 | Rotor core |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0272603A true JPH0272603A (en) | 1990-03-12 |
| JP2821480B2 JP2821480B2 (en) | 1998-11-05 |
Family
ID=16799763
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63223540A Expired - Fee Related JP2821480B2 (en) | 1988-09-08 | 1988-09-08 | Rotor core |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2821480B2 (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05146013A (en) * | 1991-03-20 | 1993-06-11 | Hitachi Ltd | Gas-insulated electrical apparatus |
| FR2757703A1 (en) * | 1996-12-24 | 1998-06-26 | Rockwell Lvs | Electrical motor rotor for cars |
| AU764796B2 (en) * | 1999-07-16 | 2003-08-28 | Mitsui Chemicals, Inc. | Polyethylene resin composition for rotational molding and rotational molded product using the composition |
| US7254881B2 (en) | 2001-03-02 | 2007-08-14 | Asmo Co., Ltd. | Method for manufacturing an armature of a rotation apparatus |
| JP2008099386A (en) * | 2006-10-10 | 2008-04-24 | Yaskawa Electric Corp | Decorative panel device for switch-board and switch-board using this |
| JP2010021340A (en) * | 2008-07-10 | 2010-01-28 | Nippon Kagaku Yakin Co Ltd | Method for manufacturing fe-based soft magnetic material, fe-based soft magnetic material and dust core |
| CN112531927A (en) * | 2020-11-19 | 2021-03-19 | 深圳市颂辉科技开发有限公司 | Sandwich type motor composite magnetic conduction structure |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53134709A (en) * | 1977-04-28 | 1978-11-24 | Fujitsu Ltd | Production of sintered ferrosilicon material |
| JPS5726106A (en) * | 1980-07-23 | 1982-02-12 | Fujitsu Ltd | Production of iron core for pulse motor |
-
1988
- 1988-09-08 JP JP63223540A patent/JP2821480B2/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53134709A (en) * | 1977-04-28 | 1978-11-24 | Fujitsu Ltd | Production of sintered ferrosilicon material |
| JPS5726106A (en) * | 1980-07-23 | 1982-02-12 | Fujitsu Ltd | Production of iron core for pulse motor |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05146013A (en) * | 1991-03-20 | 1993-06-11 | Hitachi Ltd | Gas-insulated electrical apparatus |
| FR2757703A1 (en) * | 1996-12-24 | 1998-06-26 | Rockwell Lvs | Electrical motor rotor for cars |
| AU764796B2 (en) * | 1999-07-16 | 2003-08-28 | Mitsui Chemicals, Inc. | Polyethylene resin composition for rotational molding and rotational molded product using the composition |
| US7254881B2 (en) | 2001-03-02 | 2007-08-14 | Asmo Co., Ltd. | Method for manufacturing an armature of a rotation apparatus |
| JP2008099386A (en) * | 2006-10-10 | 2008-04-24 | Yaskawa Electric Corp | Decorative panel device for switch-board and switch-board using this |
| JP2010021340A (en) * | 2008-07-10 | 2010-01-28 | Nippon Kagaku Yakin Co Ltd | Method for manufacturing fe-based soft magnetic material, fe-based soft magnetic material and dust core |
| CN112531927A (en) * | 2020-11-19 | 2021-03-19 | 深圳市颂辉科技开发有限公司 | Sandwich type motor composite magnetic conduction structure |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2821480B2 (en) | 1998-11-05 |
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