JPH04322414A - Flexible permanent magnet and manufacture thereof - Google Patents
Flexible permanent magnet and manufacture thereofInfo
- Publication number
- JPH04322414A JPH04322414A JP11796891A JP11796891A JPH04322414A JP H04322414 A JPH04322414 A JP H04322414A JP 11796891 A JP11796891 A JP 11796891A JP 11796891 A JP11796891 A JP 11796891A JP H04322414 A JPH04322414 A JP H04322414A
- Authority
- JP
- Japan
- Prior art keywords
- permanent magnet
- flexible
- covering
- pieces
- covering material
- 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
- 238000004519 manufacturing process Methods 0.000 title claims description 11
- 239000000696 magnetic material Substances 0.000 claims abstract description 7
- 229920001971 elastomer Polymers 0.000 claims description 13
- 239000005060 rubber Substances 0.000 claims description 13
- 229920003002 synthetic resin Polymers 0.000 claims description 9
- 239000000057 synthetic resin Substances 0.000 claims description 9
- 239000011248 coating agent Substances 0.000 claims description 8
- 238000000576 coating method Methods 0.000 claims description 8
- 239000000463 material Substances 0.000 abstract description 30
- 238000002156 mixing Methods 0.000 abstract description 4
- 239000000843 powder Substances 0.000 abstract 2
- 238000000034 method Methods 0.000 description 5
- 238000004073 vulcanization Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 244000043261 Hevea brasiliensis Species 0.000 description 1
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 1
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 239000002390 adhesive tape Substances 0.000 description 1
- 229910000828 alnico Inorganic materials 0.000 description 1
- 238000010073 coating (rubber) Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000006249 magnetic particle Substances 0.000 description 1
- 230000005415 magnetization Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229920003052 natural elastomer Polymers 0.000 description 1
- 229920001194 natural rubber Polymers 0.000 description 1
- 229920006122 polyamide resin Polymers 0.000 description 1
- 229920001225 polyester resin Polymers 0.000 description 1
- 239000004645 polyester resin Substances 0.000 description 1
- 229920005672 polyolefin resin Polymers 0.000 description 1
- 229920005749 polyurethane resin Polymers 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 150000002910 rare earth metals Chemical class 0.000 description 1
- 239000003566 sealing material Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229920003051 synthetic elastomer Polymers 0.000 description 1
- 239000005061 synthetic rubber Substances 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
Abstract
Description
【０００１】0001
【産業上の利用分野】本発明は、可撓性を有する長い永
久磁石とその製造方法に関し、特に複数の永久磁石片を
用いた可撓性永久磁石およびその製造方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a long flexible permanent magnet and a method for manufacturing the same, and more particularly to a flexible permanent magnet using a plurality of permanent magnet pieces and a method for manufacturing the same.
【０００２】0002
【従来の技術】長尺の可撓性永久磁石は、一般に、粉状
の永久磁石材料を、ゴム、軟質合成樹脂等の可撓性の基
材に混入し、その混合物をプレス等により長尺に成形し
、前記永久磁石材料を着磁してなる。[Prior Art] Long flexible permanent magnets are generally produced by mixing powdered permanent magnet material into a flexible base material such as rubber or soft synthetic resin, and then pressing the mixture into a long length. The permanent magnet material is magnetized.
【０００３】しかし、この種の可撓性永久磁石は、粉状
の永久磁石材料が可撓性の基材中に多量に混入されてい
るから、引張り強さが小さく、破断しやすい。このため
、従来では、押出し成形機等により断面積の小さい、線
状、棒状、紐状、リボン状、シート状等の長尺の可撓性
永久磁石を製作することが難しい。また、たとえそのよ
うな長尺の可撓性永久磁石を製作することができたとし
ても、その可撓性永久磁石は、引張り強さが小さく、破
断しやすい。さらに、可撓性の永久磁石の引張り強さを
大きくすべく、粉状の永久磁石材料の混合割合いを小さ
くすると、永久磁石としての磁気力が小さくなってしま
う。However, this type of flexible permanent magnet has a large amount of powdered permanent magnet material mixed into the flexible base material, and therefore has low tensile strength and is easily broken. For this reason, conventionally, it is difficult to produce long flexible permanent magnets with small cross-sectional areas such as wires, rods, strings, ribbons, and sheets using extrusion molding machines. Further, even if such a long flexible permanent magnet can be manufactured, the flexible permanent magnet has low tensile strength and is easily broken. Furthermore, if the mixing ratio of the powdered permanent magnet material is reduced in order to increase the tensile strength of the flexible permanent magnet, the magnetic force of the permanent magnet will be reduced.
【０００４】0004
【解決しようとする課題】本発明の目的は、引張り強さ
および磁気力をともに大きくすることにある。SUMMARY OF THE INVENTION An object of the present invention is to increase both tensile strength and magnetic force.
【０００５】[0005]
【解決手段、作用、効果】本発明の可撓性永久磁石は、
非磁性材料からなりかつ可撓性を有する筒状の被覆体と
、該被覆体内にあって該被覆体の長手方向に順次配列さ
れた複数の永久磁石片とを含む。[Solution, action, effect] The flexible permanent magnet of the present invention has
It includes a cylindrical covering made of a non-magnetic material and having flexibility, and a plurality of permanent magnet pieces disposed within the covering and sequentially arranged in the longitudinal direction of the covering.
【０００６】本発明の永久磁石において、引張力を被覆
体に受けるから、引張り強さは粉状の永久磁石材料を可
撓性の基材中に混入した可撓性永久磁石に比べ大きい。
また、永久磁石片を用いるから、粉状の永久磁石材料を
可撓性の基材中に混入した可撓性永久磁石に比べ大きな
磁気力を得ることができる。In the permanent magnet of the present invention, since the tensile force is applied to the coating, the tensile strength is greater than that of a flexible permanent magnet in which powdered permanent magnet material is mixed into a flexible base material. Furthermore, since permanent magnet pieces are used, a larger magnetic force can be obtained than with a flexible permanent magnet in which powdered permanent magnet material is mixed into a flexible base material.
【０００７】それ故に、本発明によれば、引張り強さお
よび磁気力がともに大きい永久磁石を得ることができる
。また、永久磁石片が被覆体により覆われているから、
粉状の永久磁石材料を可撓性の基材中に混入した従来の
可撓性永久磁石に比べ、耐水性、耐油性、耐薬品性、耐
摩耗性等に優れた磁石となる。Therefore, according to the present invention, a permanent magnet having both high tensile strength and high magnetic force can be obtained. In addition, since the permanent magnet piece is covered with a covering,
Compared to conventional flexible permanent magnets in which powdered permanent magnet material is mixed into a flexible base material, the magnets have superior water resistance, oil resistance, chemical resistance, abrasion resistance, etc.
【０００８】本発明で用いる被覆体としては、可撓性の
合成ゴム、可撓性の天然ゴム、軟質の合成樹脂等を用い
ることができる。特に、被覆体としての合成樹脂は、熱
可塑性の樹脂、たとえば、ポリエステル樹脂、ポリアミ
ド樹脂、ポリウレタン樹脂、ポリオレフィン樹脂、塩化
ビニル樹脂、フッ素樹脂、酢酸ビニル樹脂等を用いるこ
とができる。[0008] As the covering body used in the present invention, flexible synthetic rubber, flexible natural rubber, soft synthetic resin, etc. can be used. In particular, thermoplastic resins such as polyester resins, polyamide resins, polyurethane resins, polyolefin resins, vinyl chloride resins, fluororesins, vinyl acetate resins, etc. can be used as the synthetic resin for the covering.
【０００９】本発明で用いる永久磁石材料としては、ア
ルニコ磁石片、フェライト磁石片、希土類金属磁石片等
の磁石片を用いることができる。As the permanent magnet material used in the present invention, magnet pieces such as alnico magnet pieces, ferrite magnet pieces, and rare earth metal magnet pieces can be used.
【００１０】永久磁石片の着磁は、可撓性永久磁石の成
形時に行ってもよいし、可撓性永久磁石の実際の使用時
に行ってもよい。永久磁石片は、その配列方向と直角の
方向に磁化することが好ましい。[0010] The permanent magnet pieces may be magnetized when the flexible permanent magnet is molded or when the flexible permanent magnet is actually used. The permanent magnet pieces are preferably magnetized in a direction perpendicular to the direction in which they are arranged.
【００１１】本発明の可撓性永久磁石の製造方法は、未
着磁の複数の永久磁石片を長尺の支持体に該支持体の長
手方向へ順次配列した磁石配列体を形成し、磁石配列体
を、前記永久磁石片の配列方向へ移動させつつ、前記磁
石配列体の外表面に可撓性のゴムまたは可撓性の合成樹
脂の被覆体を形成すべく、押出機の被覆用ダイに通すこ
とを含む。さらに、前記磁石配列体の外表面に被覆体を
形成した後、前記永久磁石片を着磁することを含むこと
ができる。The method for manufacturing a flexible permanent magnet of the present invention includes forming a magnet array in which a plurality of unmagnetized permanent magnet pieces are sequentially arranged on a long support in the longitudinal direction of the support. While moving the array in the direction in which the permanent magnet pieces are arranged, a coating die of an extruder is used to form a flexible rubber or flexible synthetic resin coating on the outer surface of the magnet array. Including passing through. The method may further include magnetizing the permanent magnet pieces after forming a coating on the outer surface of the magnet array.
【００１２】0012
【実施例】先ず、本発明の可撓性永久磁石の実施例につ
いて説明する。[Example] First, an example of the flexible permanent magnet of the present invention will be described.
【００１３】図１（Ａ）を参照するに、可撓性永久磁石
１０は、非磁性材料からなりかつ可撓性を有する被覆体
１２と、該被覆体内に該被覆体の長手方向へ順次配列さ
れた複数の永久磁石片１４とにより、丸棒の形に形成さ
れている。被覆体１２は、所定の肉厚の円筒状の形を有
する。永久磁石片１４は、短い円柱の形を有しており、
またそれらの軸線が被覆体１２の長手方向となるように
被覆体１２の長手方向へ間隔をおいて配置されている。Referring to FIG. 1(A), a flexible permanent magnet 10 includes a flexible sheath 12 made of a non-magnetic material, and a sheath 12 arranged in sequence in the longitudinal direction of the sheath. A plurality of permanent magnet pieces 14 are formed into a round bar shape. The covering 12 has a cylindrical shape with a predetermined wall thickness. The permanent magnet piece 14 has a short cylindrical shape,
Further, they are arranged at intervals in the longitudinal direction of the covering body 12 so that their axes are in the longitudinal direction of the covering body 12.
【００１４】図１（Ｂ）を参照するに、可撓性永久磁石
１６は、非磁性材料からなりかつ可撓性を有する被覆体
１８と、該被覆体内に該被覆体の長手方向へ順次配列さ
れた複数の永久磁石片２０とにより、角柱の形に形成さ
れている。被覆体１８は、所定の肉厚の四角筒状の形を
有する。永久磁石片２０は、直方体状の形を有しており
、また被覆体１８の長手方向へ間隔をおいて配置されて
いる。Referring to FIG. 1(B), the flexible permanent magnets 16 include a flexible covering 18 made of a non-magnetic material and arranged in the covering in the longitudinal direction of the covering. A plurality of permanent magnet pieces 20 are formed into a prismatic shape. The covering body 18 has a rectangular cylindrical shape with a predetermined wall thickness. The permanent magnet pieces 20 have a rectangular parallelepiped shape and are arranged at intervals in the longitudinal direction of the covering 18.
【００１５】図１（Ｃ）および（Ｄ）に示すように、い
ずれの可撓性永久磁石１０，１６においても、永久磁石
片１４，１８は、それらの配列方向と直角の方向に磁化
されている。このため、可撓性永久磁石１０はその直径
方向すなわち永久磁石片１４の配列方向と直交する方向
へ着磁された丸棒状の磁石として利用することができ、
可撓性永久磁石１６は永久磁石片２０の配列方向と直交
する方向へ着磁された四角柱状の磁石として利用するこ
とができる。As shown in FIGS. 1C and 1D, in both the flexible permanent magnets 10 and 16, the permanent magnet pieces 14 and 18 are magnetized in a direction perpendicular to the direction in which they are arranged. There is. Therefore, the flexible permanent magnet 10 can be used as a round bar-shaped magnet that is magnetized in its diameter direction, that is, in a direction perpendicular to the arrangement direction of the permanent magnet pieces 14.
The flexible permanent magnet 16 can be used as a rectangular column-shaped magnet magnetized in a direction perpendicular to the direction in which the permanent magnet pieces 20 are arranged.
【００１６】また、いずれの可撓性永久磁石１０，１６
においても、被覆体と同一の材料を隣り合う永久磁石片
の間に被覆体と一体的に配置することすなわち充填して
もよいし、隣り合う永久磁石片の間に間隔が形成されな
いように、永久磁石片を配置してもよい。[0016] Also, which flexible permanent magnets 10, 16
In this case, the same material as the covering may be disposed integrally with the covering between adjacent permanent magnet pieces, that is, it may be filled, or the material may be placed between adjacent permanent magnet pieces so that no space is formed between them. Permanent magnet pieces may also be placed.
【００１７】さらに、いずれの可撓性永久磁石１０，１
６においても、被覆体および永久磁石片として、前記し
た材料を用いることができる。また、永久磁石片の着磁
は、被覆体として、ゴムを用いる場合は加硫後に、合成
樹脂を用いる場合は硬化後に、それぞれ行うことが好ま
しい。しかし、前記したように、永久磁石片の着磁は、
可撓性永久磁石の成形時に行ってもよいし、可撓性永久
磁石の実際の使用時に行ってもよい。Furthermore, which flexible permanent magnets 10, 1
Also in No. 6, the above-mentioned materials can be used as the covering and the permanent magnet piece. Further, it is preferable to magnetize the permanent magnet pieces after vulcanization when rubber is used as the covering, and after curing when synthetic resin is used as the covering. However, as mentioned above, the magnetization of the permanent magnet piece is
This may be carried out during molding of the flexible permanent magnet, or may be carried out when the flexible permanent magnet is actually used.
【００１８】帯状のまたは細長い板状の可撓性永久磁石
の場合、永久磁石片として板状の永久磁石片を用い、該
永久磁石片を被覆体の長手方向へ順次配列し、各永久磁
石片をその板厚方向へ着磁すればよい。In the case of a strip-shaped or elongated plate-shaped flexible permanent magnet, plate-shaped permanent magnet pieces are used as the permanent magnet pieces, and the permanent magnet pieces are sequentially arranged in the longitudinal direction of the covering, and each permanent magnet piece is It is sufficient to magnetize the material in the direction of its thickness.
【００１９】次に、本発明の永久磁石の製造方法および
装置の実施例について説明する。Next, embodiments of the permanent magnet manufacturing method and apparatus of the present invention will be described.
【００２０】図２に示す製造装置３０は、被覆体として
可撓性のゴムを用いる。未加硫ゴム３２は、押出機３４
に収容されており、また押出機３２の被覆用クロスヘッ
ド型ダイ３６から連続的に押し出される。これに対し、
磁石配列体３８は、複数の永久磁石片４０を粘着テープ
のようなリボン状の支持体４２の上に支持体４２の長手
方向へ間隔をおいて順次配列されており、また永久磁石
片４０と支持体４２とが支持体４２の長手方向へ一体的
に移動されるように、ダイ３６に連続的に供給される。The manufacturing apparatus 30 shown in FIG. 2 uses flexible rubber as a covering. The unvulcanized rubber 32 is passed through an extruder 34
and is continuously extruded from a coating crosshead die 36 of an extruder 32. In contrast,
The magnet array 38 has a plurality of permanent magnet pieces 40 arranged one after another at intervals in the longitudinal direction of the support 42 on a ribbon-shaped support 42 such as an adhesive tape. The support body 42 is continuously supplied to the die 36 so that the support body 42 is moved integrally with the support body 42 in the longitudinal direction of the support body 42 .
【００２１】これにより、未加硫ゴムの被覆体が磁石配
列体３８の周りに形成されかつ未加硫ゴムが隣り合う永
久磁石片４０の間の空間の一部に入り込んだ長尺体がダ
イ３６から連続的に押し出される。ダイ３６から連続的
に押し出された長尺体は、加硫用の加熱機４４、冷却機
４６、引取機４８、着磁機５０、引取機５２を経て巻取
り機５４に巻き取られる。押し出された長尺体は、押出
機３４の押出し力、引取機４８，５２の吸引力、ならび
に巻取り機５４の巻取り力により移動される。As a result, the elongated body in which the unvulcanized rubber coating is formed around the magnet array 38 and the unvulcanized rubber has entered a part of the space between the adjacent permanent magnet pieces 40 is die-cut. It is continuously extruded from 36. The elongated body continuously extruded from the die 36 passes through a heating machine 44 for vulcanization, a cooling machine 46, a take-up machine 48, a magnetizing machine 50, and a take-up machine 52, and then is wound up by a winding machine 54. The extruded elongate body is moved by the extrusion force of the extruder 34, the suction force of the take-up machines 48 and 52, and the winding force of the winder 54.
【００２２】移動過程において、押し出された未加硫の
長尺体は、先ず加熱機４４において加熱されることによ
り未加硫ゴムが加硫され、次いで冷却機４６において水
等により室温に冷却されることにより長尺の可撓性永久
磁石とされ、次いで着磁機５０において永久磁石材料が
着磁されることにより着磁された長尺の可撓性永久磁石
５６とされる。In the moving process, the extruded unvulcanized elongated body is first heated in a heater 44 to vulcanize the unvulcanized rubber, and then cooled to room temperature with water or the like in a cooler 46. By doing so, it is made into a long flexible permanent magnet, and then the permanent magnet material is magnetized in the magnetizing machine 50 to make a magnetized long flexible permanent magnet 56.
【００２３】製造装置３０において、被覆体用材料とし
てゴムの代りに熱可塑性の合成樹脂を用いる場合は、ゴ
ム用の押出機３４の代りに合成樹脂用の押出機を用い、
また加硫用の加熱機４４を除去すればよい。また、各永
久磁石片を可撓性永久磁石の成形時に着磁しない場合は
、製造装置３０における着磁機５０を削除するか、着磁
機５０を稼動させなければよい。In the manufacturing apparatus 30, when a thermoplastic synthetic resin is used instead of rubber as the covering material, an extruder for synthetic resin is used instead of the extruder 34 for rubber,
Further, the heating device 44 for vulcanization may be removed. Furthermore, if each permanent magnet piece is not magnetized during molding of the flexible permanent magnet, the magnetizing machine 50 in the manufacturing apparatus 30 may be deleted or the magnetizing machine 50 may not be operated.
【００２４】被覆体としてゴムを用いる場合、隣り合う
永久磁石片間に存在する空気がゴムの加硫時に加熱膨張
され、その結果被覆体の表面に凹凸が形成されることが
ある。これを防止するには、たとえば、隣り合う永久磁
石片間に対応する箇所にピンホールを予め形成する、撚
糸を隣り合う永久磁石片間をつなぐように永久磁石片の
側面に配置する、永久磁石片の中央に貫通穴を形成する
、等、隣り合う永久磁石片間の空気の逃道を形成してお
けばよい。When rubber is used as the covering, air existing between adjacent permanent magnet pieces is heated and expanded during vulcanization of the rubber, and as a result, irregularities may be formed on the surface of the covering. To prevent this, for example, pinholes are formed in advance at corresponding locations between adjacent permanent magnet pieces, twisted threads are placed on the sides of the permanent magnet pieces so as to connect the adjacent permanent magnet pieces, and permanent magnets are It is sufficient to form an air escape between adjacent permanent magnet pieces, such as by forming a through hole in the center of each piece.
【００２５】本発明の可撓性永久磁石は、電気冷蔵庫の
ドア用シール材等、公知の可撓性永久磁石と同様に利用
することができるのみならず、液体中の磁性の粒子を吸
着分離する装置の吸着用磁石、磁気センサを持つ運搬装
置の案内用磁石、任意な長さに切断して磁性体の表面に
吸着させ、該磁性体を掲示するための磁石等に利用する
ことができる。The flexible permanent magnet of the present invention can not only be used in the same way as known flexible permanent magnets, such as sealing materials for the doors of electric refrigerators, but also can be used to attract and separate magnetic particles in liquids. It can be used as a magnet for attracting equipment, a guide magnet for transportation equipment that has a magnetic sensor, a magnet for displaying the magnetic material by cutting it to any length, adhering it to the surface of a magnetic material, etc. .
【図１】本発明の可撓性永久磁石の実施例を示す図であ
る。FIG. 1 is a diagram showing an embodiment of a flexible permanent magnet of the present invention.
【図２】本発明の可撓性永久磁石を製造する装置の一実
施例を示す図である。FIG. 2 is a diagram showing an embodiment of an apparatus for manufacturing a flexible permanent magnet of the present invention.
１０，１６，５６ 可撓性永久磁石 １２，１８ 被覆体 １４，２０，４０ 永久磁石片 ３８ 磁石配列体 ４２ 支持体 10, 16, 56 Flexible permanent magnet 12, 18 Covering body 14, 20, 40 Permanent magnet piece 38 Magnet array 42 Support
Claims (5)
る筒状の被覆体と、該被覆体内にあって該被覆体の長手
方向に順次配列された複数の永久磁石片とを含む、可撓
性永久磁石。1. A flexible magnet comprising a cylindrical covering made of a non-magnetic material and having flexibility, and a plurality of permanent magnet pieces disposed within the covering and sequentially arranged in the longitudinal direction of the covering. Flexible permanent magnet.
撓性の合成樹脂である、請求項１に記載の可撓性永久磁
石。2. The flexible permanent magnet according to claim 1, wherein the covering is made of flexible rubber or flexible synthetic resin.
角の方向に磁化されている、請求項１に記載の可撓性永
久磁石。3. The flexible permanent magnet according to claim 1, wherein the permanent magnet pieces are magnetized in a direction perpendicular to the direction in which the permanent magnet pieces are arranged.
持体に該支持体の長手方向へ順次配列した磁石配列体を
形成し、該磁石配列体を、該磁石配列体の配列方向へ移
動させつつ、前記磁石配列体の外表面に可撓性のゴムま
たは可撓性の合成樹脂の被覆体を形成すべく、押出機の
被覆用ダイに通すことを含む、可撓性永久磁石の製造方
法。4. A magnet array is formed by sequentially arranging a plurality of unmagnetized permanent magnet pieces on a long support in the longitudinal direction of the support, and the magnet array is arranged in a manner similar to the arrangement of the magnet array. passing the flexible permanent magnet through a coating die of an extruder to form a flexible rubber or flexible synthetic resin coating on the outer surface of the magnet array. How to manufacture magnets.
覆体を形成した後、前記永久磁石片を着磁することを含
む、請求項５に記載の可撓性永久磁石の製造方法。5. The method of manufacturing a flexible permanent magnet according to claim 5, further comprising magnetizing the permanent magnet pieces after forming a coating on the outer surface of the magnet array.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11796891A JP3061440B2 (en) | 1991-04-22 | 1991-04-22 | Flexible permanent magnet and method of manufacturing the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11796891A JP3061440B2 (en) | 1991-04-22 | 1991-04-22 | Flexible permanent magnet and method of manufacturing the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04322414A true JPH04322414A (en) | 1992-11-12 |
| JP3061440B2 JP3061440B2 (en) | 2000-07-10 |
Family
ID=14724734
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11796891A Expired - Fee Related JP3061440B2 (en) | 1991-04-22 | 1991-04-22 | Flexible permanent magnet and method of manufacturing the same |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3061440B2 (en) |
-
1991
- 1991-04-22 JP JP11796891A patent/JP3061440B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP3061440B2 (en) | 2000-07-10 |
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