JPS6110965B2 - - Google Patents
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- Publication number
- JPS6110965B2 JPS6110965B2 JP9171178A JP9171178A JPS6110965B2 JP S6110965 B2 JPS6110965 B2 JP S6110965B2 JP 9171178 A JP9171178 A JP 9171178A JP 9171178 A JP9171178 A JP 9171178A JP S6110965 B2 JPS6110965 B2 JP S6110965B2
- Authority
- JP
- Japan
- Prior art keywords
- casing
- permanent magnet
- magnet
- iron core
- magnetic
- 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.)
- Expired
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 29
- 239000000696 magnetic material Substances 0.000 claims description 9
- 229910000859 α-Fe Inorganic materials 0.000 claims description 9
- 125000006850 spacer group Chemical group 0.000 claims description 6
- 230000004907 flux Effects 0.000 description 16
- 229910000828 alnico Inorganic materials 0.000 description 6
- 230000002093 peripheral effect Effects 0.000 description 6
- 239000000463 material Substances 0.000 description 4
- 238000001179 sorption measurement Methods 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000005415 magnetization Effects 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Description
【発明の詳細な説明】
本発明は、物品の磁性体への取付けのためにこ
れらの物品に磁気発生源として組み込みあるいは
鋼材のような磁性部材を吸着保持するための吊上
磁石装置等にその磁気発生源として組み込むのに
好適な磁石組立体に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention can be incorporated as a magnetic generation source into articles for attachment to magnetic materials, or incorporated into a hanging magnet device, etc. for attracting and holding magnetic members such as steel materials. The present invention relates to a magnet assembly suitable for incorporation as a magnetic source.
従来のこの種の磁石組立体の１つは、第１図に
示すように、柱状の永久磁石１０と、磁性材料か
らなり、永久磁石１０を収容する一端開放の筒状
のケーシング１２とを含む。永久磁石１０は、ケ
ーシング１２の内壁面の周壁部分と間隔をおいて
該ケーシング内にこれと同軸的に配置されてい
る。永久磁石１０はその長手方向に磁化されてお
り、両端１０ａ，１０ｂに対をなす磁極が形成さ
れている。一方の磁極である永久磁石１０の一端
がケーシング１２の閉鎖端に当接し、また他方の
磁極である永久磁石１０の他端には磁極片１４が
設けられており、該磁極片は非磁性材料からなる
リング１６を介してケーシング１２の開放端の内
縁部に固定されている。 As shown in FIG. 1, one conventional magnet assembly of this type includes a columnar permanent magnet 10 and a cylindrical casing 12 made of a magnetic material and open at one end and housing the permanent magnet 10. . The permanent magnet 10 is disposed within the casing 12 coaxially with the peripheral wall portion of the inner wall surface of the casing 12 with a space therebetween. The permanent magnet 10 is magnetized in its longitudinal direction, and a pair of magnetic poles are formed at both ends 10a and 10b. One end of the permanent magnet 10, which is one magnetic pole, is in contact with the closed end of the casing 12, and the other end of the permanent magnet 10, which is the other magnetic pole, is provided with a magnetic pole piece 14, which is made of a non-magnetic material. It is fixed to the inner edge of the open end of the casing 12 via a ring 16 consisting of.
前記磁石組立体によれば、ケーシング１０の開
放端の面と、該面に一致する磁極片１４の面とが
磁気吸着面１８を構成し、この磁気吸着面１８に
永久磁石１０の磁力が有効に磁気吸着力として作
用する。 According to the magnet assembly, the surface of the open end of the casing 10 and the surface of the magnetic pole piece 14 that corresponds to the surface constitute the magnetic attraction surface 18, and the magnetic force of the permanent magnet 10 is effective on this magnetic attraction surface 18. acts as a magnetic attraction force.
ところで、前記磁気吸着力は、前記永久磁石の
残留磁束密度の二乗と、その磁化方向と直角な断
面積すなわち磁極面との積に比例する。また、第
１図に示した構造では、前記永久磁石はその両端
面に磁極面を有する柱状であるため、該永久磁石
として大きな磁極面積を有するものを用いた場合
に永久磁石１０自体が大型となり、前記磁石組立
体の大型化を招くこととなる。このため、従来、
前記磁石組立体の永久磁石１０として、比較的小
さな磁極面積で強い磁力を得ることのできる残留
磁束密度の高いアルニコ系磁石が用いられてい
た。 By the way, the magnetic attraction force is proportional to the product of the square of the residual magnetic flux density of the permanent magnet and the cross-sectional area perpendicular to the magnetization direction, that is, the magnetic pole surface. Furthermore, in the structure shown in FIG. 1, the permanent magnet is columnar with magnetic pole surfaces on both end faces, so if a permanent magnet with a large magnetic pole area is used, the permanent magnet 10 itself becomes large. , this results in an increase in the size of the magnet assembly. For this reason, conventionally,
As the permanent magnet 10 of the magnet assembly, an alnico magnet having a high residual magnetic flux density and capable of obtaining strong magnetic force with a relatively small magnetic pole area has been used.
しかし、アルニコ系磁石の磁石材料は、国際情
勢の影響により絶えず需給に不安が併なう高価な
コバルトやニツケルを多量に含む合金であり、高
価で調達に困難な材料である。 However, the magnet material for alnico magnets is an alloy containing large amounts of expensive cobalt and nickel, and the supply and demand is constantly uncertain due to the influence of international situations, making it an expensive and difficult material to procure.
入手の容易な磁石として高い保磁力を有するフ
エライト磁石等が挙げられる。しかし、高い保磁
力をもつこれらの磁石の残留磁束密度は低く、前
記したアルニコ系磁石の残留磁束密度が約10000
〜12000ガウスであるのに対してフエライト磁石
のそれは約3000〜4000ガウスである。従つて、磁
石の磁束が全て磁気吸着力に作用したと仮定する
とその吸着力は前者が4.00〜5.76Kg／cm2であるの
に対して後者が0.36〜0.64Kg／cm2である。このこ
とから明らかなように、従来の磁石組立体におい
て前記永久磁石としてフエライト磁石等を用いた
場合、前記吸着面に従来と同等の磁気吸着力を発
揮させるには従来のアルニコ磁石に対して３倍な
いし４倍の大きな磁極面を有する大型の永久磁石
が必要となり、このため磁石組立体が大型化す
る。 Examples of easily available magnets include ferrite magnets with high coercive force. However, the residual magnetic flux density of these magnets with high coercive force is low, and the residual magnetic flux density of the above-mentioned alnico magnet is about 10,000.
~12000 Gauss, whereas that of ferrite magnets is about 3000-4000 Gauss. Therefore, assuming that all the magnetic flux of the magnet acts on the magnetic attraction force, the attraction force is 4.00 to 5.76 Kg/cm 2 for the former, while it is 0.36 to 0.64 Kg/cm 2 for the latter. As is clear from this, when a ferrite magnet or the like is used as the permanent magnet in a conventional magnet assembly, in order to exert the same magnetic attraction force on the attraction surface as before, it is necessary to A larger permanent magnet with a pole face that is twice or four times larger is required, which increases the size of the magnet assembly.
従つて、本発明はフエライト磁石で代表される
低磁束密度高保磁力の永久磁石を用いても所望の
磁気吸着力を得ることのできるコンパクトな磁石
組立体を提供することを目的とする。 Therefore, an object of the present invention is to provide a compact magnet assembly that can obtain a desired magnetic attraction force even when using a permanent magnet with a low magnetic flux density and high coercive force, such as a ferrite magnet.
本発明は、永久磁石と、磁性材料からなり、前
記永久磁石を収容する少くも一端開放の筒状のケ
ーシングを含む磁石組立体であつて、前記ケーシ
ングはさらに鉄心を収容し、該鉄心は前記ケーシ
ングの内壁面から間隔をおいて該ケーシング内に
配置されており、前記永久磁石は前記ケーシング
と前記鉄心との間に配置され、前記永久磁石は前
記ケーシングの前記内壁面に対向する外面に一方
の磁極を有しかつ前記鉄心の周面に対向する内面
に他方の磁極を有し、前記ケーシングの前記開放
端および該開放端側に位置する前記鉄心の一方の
端面が磁気吸着面となる。 The present invention is a magnet assembly including a permanent magnet and a cylindrical casing made of a magnetic material and having at least one open end and accommodating the permanent magnet, the casing further accommodating an iron core, and the iron core The permanent magnet is disposed within the casing at a distance from the inner wall surface of the casing, the permanent magnet is disposed between the casing and the iron core, and one of the permanent magnets is disposed on an outer surface of the casing opposite to the inner wall surface. and has the other magnetic pole on an inner surface facing the circumferential surface of the core, and the open end of the casing and one end surface of the core located on the open end side serve as magnetic attraction surfaces.
本発明が特徴とするところは、図示の実施例に
ついての以下の説明により、さらに明らかとなろ
う。 The features of the invention will become clearer from the following description of the illustrated embodiments.
第２図には、本発明に係る磁石組立体が全体に
符号２０で示されている。磁石組立体２０は、磁
性材料からなる一端開放の筒状ケーシング２２
と、該ケーシング内に収容される鉄心２４および
永久磁石２６とを含む。 In FIG. 2, a magnet assembly according to the present invention is shown generally at 20. The magnet assembly 20 includes a cylindrical casing 22 made of a magnetic material and having an open end.
and an iron core 24 and a permanent magnet 26 housed within the casing.
鉄心２４は円柱状の磁性部材からなり、該鉄心
の一方の端面２４ａがケーシング２２の開放端の
面２２ａと一致するようにケーシング２２の内壁
面と隔間をおいて該ケーシングと同軸的に配置さ
れている。また、鉄心２４の他方の端面２４ｂと
ケーシング２２の閉鎖端との間にはケーシング２
２に対して鉄心２４を位置決めるための非磁性材
料からなるスペーサ２８が配置されており、該ス
ペーサはケーシング２２および鉄心２４にそれぞ
れ固着されている。 The iron core 24 is made of a cylindrical magnetic member, and is arranged coaxially with the casing at a distance from the inner wall surface of the casing 22 so that one end surface 24a of the iron core coincides with the open end surface 22a of the casing 22. has been done. Furthermore, a casing 2 is provided between the other end surface 24b of the iron core 24 and the closed end of the casing 22.
A spacer 28 made of a non-magnetic material is arranged to position the iron core 24 with respect to the casing 22 and the iron core 24, respectively.
前記永久磁石２６は、第３図に示されているよ
うに、鉄心２４の外周を取り巻く筒状の永久磁石
であつて、その内周面２６ａが鉄心２４の周囲に
接し、またその外周面２６ｂがケーシング２２の
内壁面の周壁部分に接する。永久磁石２６はその
内周面２６ａに一方の磁極（ＮまたはＳ）を有
し、その外周面２６ｂに他方の磁極（Ｓまたは
Ｎ）を有し、各周面２６ａ，２６ｂが互いに対を
なす磁極面となる。 As shown in FIG. 3, the permanent magnet 26 is a cylindrical permanent magnet that surrounds the outer periphery of the iron core 24, and its inner peripheral surface 26a is in contact with the periphery of the iron core 24, and its outer peripheral surface 26b is in contact with the periphery of the iron core 24. is in contact with the peripheral wall portion of the inner wall surface of the casing 22. The permanent magnet 26 has one magnetic pole (N or S) on its inner circumferential surface 26a and the other magnetic pole (S or N) on its outer circumferential surface 26b, and each circumferential surface 26a, 26b forms a pair with each other. This becomes the magnetic pole surface.
従つて、前記磁石組立体２０においては、永久
磁石２６によつて第２図に破線で示されるような
磁気回路が形成され、ケーシング２２の前記開放
端の面２２ａおよび鉄心２４の一方の端面２４ａ
が鉄片等の吸引対象物３０を吸着するための磁気
吸着面３２を構成する。 Therefore, in the magnet assembly 20, the permanent magnet 26 forms a magnetic circuit as shown by the broken line in FIG.
constitutes a magnetic attraction surface 32 for attracting an attraction object 30 such as a piece of iron.
前記磁石組立体２０においては、永久磁石は筒
状の磁石であり、その内周面２６ａおよび外周面
２６ｂが互に対をなす磁極面である。このことか
ら、本発明によれば第１図に示した従来の前記磁
石組立体に用いられた柱状の永久磁石１０の磁極
面に比較して、磁石組立体の大型化を招くことな
く前記永久磁石２６の磁極面積を４倍以上に設定
することができる。 In the magnet assembly 20, the permanent magnet is a cylindrical magnet, and its inner circumferential surface 26a and outer circumferential surface 26b are magnetic pole surfaces that are paired with each other. Therefore, according to the present invention, compared to the magnetic pole surface of the columnar permanent magnet 10 used in the conventional magnet assembly shown in FIG. The magnetic pole area of the magnet 26 can be set to four times or more.
従つて、前記永久磁石２６として4000ガウス程
度の低い残留磁束密度を有するフエライト磁石を
用いても、この永久磁石２６の磁束を有効に前記
吸着面に作用させることにより、該吸着面の磁束
密度を16000ガウス（4000×４）以上とすること
ができ、これにより永久磁石２６にフエライト磁
石等の高保磁力低磁束密度の永久磁石を用いて本
発明に係る磁石組立体２０に従来の前記磁石組立
体とほぼ同等の磁気吸着力を発揮させることがで
きる。発明者らが試作したものでは、従来と同様
な外寸を有する磁石組立体２０（ケーシングの外
径が32mm）において永久磁石２６としてフエライ
ト磁石を用いた場合に、磁石組立体２０は65Kgの
磁気吸着力を発揮した。 Therefore, even if a ferrite magnet having a low residual magnetic flux density of about 4000 Gauss is used as the permanent magnet 26, the magnetic flux density of the attracting surface can be reduced by making the magnetic flux of the permanent magnet 26 effectively act on the attracting surface. 16,000 gauss (4,000×4) or more, thereby using a permanent magnet with a high coercive force and low magnetic flux density, such as a ferrite magnet, as the permanent magnet 26, and the magnet assembly 20 according to the present invention can be replaced with the conventional magnet assembly. It is possible to exert almost the same magnetic adsorption force. In the prototype produced by the inventors, when a ferrite magnet is used as the permanent magnet 26 in a magnet assembly 20 having the same external dimensions as the conventional one (the outer diameter of the casing is 32 mm), the magnet assembly 20 has a magnetic field of 65 kg. Demonstrated adsorption power.
第２図には、ケーシング２２の前記閉鎖端と鉄
心２４の端面２４ｂとの間に非磁性材料からなる
スペーサ２８を配置した例を示したが、該スペー
サを不要とすることができる。この場合には、前
記閉鎖端と鉄心２４の端面２４ｂとの間に空隙が
保持されるように、鉄心２４は磁石２６を介して
ケーシング２２に固定される。 Although FIG. 2 shows an example in which a spacer 28 made of a non-magnetic material is arranged between the closed end of the casing 22 and the end surface 24b of the iron core 24, this spacer can be made unnecessary. In this case, the iron core 24 is fixed to the casing 22 via the magnet 26 so that a gap is maintained between the closed end and the end surface 24b of the iron core 24.
また、ケーシング２２の前記閉鎖端と鉄心２４
の端面２４ｂとの間に、スペーサ２８に代えて、
前記閉鎖端に対向しかつ該閉鎖端に接する外面に
前記永久磁石２６の外周面２６ｂの磁極と同一の
磁極を有しまた前記端面２４ｂに対向しかつ該端
面に接する内面に永久磁石２６の内周面２４ｂの
磁極と同一の磁極を有する永久磁石を配置するこ
とができ、該磁石によつて鉄心２４の端面２４ｂ
からの漏洩磁束に反磁界を付与し、これにより前
記吸着面３２への磁束誘導を増大させて該磁気吸
着面の磁気吸着力を高めることができる。 Further, the closed end of the casing 22 and the iron core 24
Instead of the spacer 28, between the end face 24b of
The outer surface facing and in contact with the closed end has the same magnetic pole as the outer peripheral surface 26b of the permanent magnet 26, and the inner surface of the permanent magnet 26 has the same magnetic pole as the outer circumferential surface 26b of the permanent magnet 26, and the inner surface facing and in contact with the end surface 24b has A permanent magnet having the same magnetic pole as the magnetic pole of the peripheral surface 24b can be arranged, and the end surface 24b of the iron core 24 can be
A demagnetizing field is applied to the leakage magnetic flux from the magnet, thereby increasing the magnetic flux induction to the magnetic attraction surface 32, thereby increasing the magnetic attraction force of the magnetic attraction surface.
前記永久磁石２６を第４図に示されるように、
複数の弧状の磁石片２６′の組み合わせとするこ
とができ、また永久磁石２６として、いわゆるゴ
ム磁石等の可撓性磁石あるいは磁性プラスチツク
材料を磁化したものを用いることができる。さら
に、前記した低磁束密度の永久磁石に代えて、前
記永久磁石２６にアルニコ系磁石等の高磁束密度
の永久磁石を用いることができ、これにより従来
に比較して一層強力な磁気吸着力を発揮させるこ
とができる。また、永久磁石２６にアルニコ系磁
石等を用いる場合、該永久磁石として１つまたは
複数の第４図に示したような弧状の磁石片を用い
ることができる。 As shown in FIG. 4, the permanent magnet 26 is
A plurality of arc-shaped magnet pieces 26' may be combined, and the permanent magnet 26 may be a flexible magnet such as a so-called rubber magnet or a magnetized magnetic plastic material. Furthermore, instead of the above-mentioned low magnetic flux density permanent magnet, a high magnetic flux density permanent magnet such as an alnico magnet can be used as the permanent magnet 26, thereby achieving a stronger magnetic attraction force than conventional ones. It can be demonstrated. Further, when an alnico magnet or the like is used as the permanent magnet 26, one or more arc-shaped magnet pieces as shown in FIG. 4 can be used as the permanent magnet.
前記したところでは、一端に磁気吸着面を有す
る磁石組立体について説明したが、第５図に示す
ようにケーシング２２を両端開放とし、該両開放
端に鉄心２４の両端面２４ａ，２４ｂのそれぞれ
を一致して露出させることにより磁石組立体２０
の両端に磁気吸着面３２を形成することができ
る。 In the above description, a magnet assembly having a magnetic attraction surface at one end has been described, but as shown in FIG. Magnet assembly 20 by aligning and exposing
Magnetic attraction surfaces 32 can be formed at both ends of the magnetically attracting surface 32 .
本発明によれば、前記したように、フエライト
磁石のように高保磁力、低磁束密度の永久磁石を
用いて従来の前記磁石組立体と同等な磁気吸着力
を発揮させることができ、しかも前記永久磁石は
高保磁力を有することから、衝撃、振動および外
界の減磁界等によつて容易に減磁されることはな
く耐久性の向上を図ることができる。また、本発
明によれば、前記永久磁石にアルニコ磁石のよう
に高磁束密度の永久磁石を用いることにより従来
の前記磁石組立体よりも強い磁気吸着力を発揮さ
せることができる。 According to the present invention, as described above, it is possible to use a permanent magnet such as a ferrite magnet with high coercive force and low magnetic flux density to exhibit magnetic attraction force equivalent to that of the conventional magnet assembly, and furthermore, the permanent magnet Since the magnet has a high coercive force, it is not easily demagnetized by shocks, vibrations, external demagnetizing fields, etc., and its durability can be improved. Further, according to the present invention, by using a permanent magnet having a high magnetic flux density such as an alnico magnet as the permanent magnet, it is possible to exert a stronger magnetic attraction force than the conventional magnet assembly.
第１図は従来の磁石組立体を示す縦断面図であ
り、第２図は本発明に係る磁石組立体を示す縦断
面図であり、第３図は第２図に示した線―に
沿つて得られた横断面図であり、第４図は第２図
および第３図に示された永久磁石の他の実施例を
示す斜視図であり、第５図は本発明の他の実施例
を示す第２図と同様な図面である。
１０，２６，２６′：永久磁石、１２，２２：
ケーシング、２２ａ：ケーシングの開放端、１
８，３２：磁気吸着面、２４：鉄心、２４ａ，２
４ｂ：鉄心の端面、２８：スペーサ。
FIG. 1 is a longitudinal sectional view showing a conventional magnet assembly, FIG. 2 is a longitudinal sectional view showing a magnet assembly according to the present invention, and FIG. 3 is a longitudinal sectional view taken along the line shown in FIG. 2. FIG. 4 is a perspective view showing another embodiment of the permanent magnet shown in FIGS. 2 and 3, and FIG. 5 is a cross-sectional view of another embodiment of the present invention. FIG. 2 is a drawing similar to FIG. 10, 26, 26': Permanent magnet, 12, 22:
Casing, 22a: open end of casing, 1
8, 32: Magnetic adsorption surface, 24: Iron core, 24a, 2
4b: End face of iron core, 28: Spacer.
Claims (1)
石を収容する少くも一端開放の筒状のケーシング
とを含む磁石組立体であつて、前記ケーシングは
さらに鉄心を収容し、該鉄心は前記ケーシングの
内壁面から間隔をおいて該ケーシング内に配置さ
れており、前記永久磁石は前記ケーシングと前記
鉄心との間に配置され、前記永久磁石は前記ケー
シングの前記内壁面に対向する外面に一方の磁極
を有しかつ前記鉄心の周面に対向する内面に他方
の磁極を有し、前記ケーシングの前記開放端およ
び該開放端側に位置する前記鉄心の一方の端面が
磁気吸着面である磁石組立体。 ２ 前記ケーシングの他端は閉鎖端であり、該閉
鎖端と前記鉄心の他方の端面との間には空隙が設
けられている特許請求の範囲第１項に記載の磁石
組立体。 ３ 前記ケーシングの他端は閉鎖端であり、該閉
鎖端と前記鉄心の他方の端面との間には非磁性材
料からなるスペーサが配置されている特許請求の
範囲第１項に記載の磁石組立体。 ４ 前記ケーシングの他端は閉鎖端であり、該閉
鎖端と前記鉄心の他方の端面との間にはさらに他
の永久磁石が配置されており該永久磁石は前記ケ
ーシングの前記閉鎖端に対向する外面に前記一方
の磁極を有しかつ前記鉄心の前記他方の端面に対
向する内面に前記他方の磁極を有する特許請求の
範囲第１項に記載の磁石組立体。 ５ 前記ケーシングは両端開放であり、該両端開
放および前記鉄心の両端面が磁気吸着面である特
許請求の範囲第１項に記載の磁石組立体。 ６ 前記永久磁石はフエライト磁石である特許請
求の範囲第１項に記載の磁石組立体。 ７ 前記永久磁石は筒状の永久磁石である特許請
求の範囲第１項に記載の磁石組立体。 ８ 前記永久磁石は複数の弧状の磁石片からなる
特許請求の範囲第７項に記載の磁石組立体。[Scope of Claims] 1. A magnet assembly including a permanent magnet and a cylindrical casing made of a magnetic material and having at least one open end and accommodating the permanent magnet, the casing further accommodating an iron core, The iron core is arranged within the casing at a distance from the inner wall surface of the casing, the permanent magnet is arranged between the casing and the iron core, and the permanent magnet faces the inner wall surface of the casing. has one magnetic pole on the outer surface thereof and has the other magnetic pole on the inner surface facing the circumferential surface of the core, and the open end of the casing and one end surface of the core located on the open end side are magnetically attracted. Magnet assembly that is a surface. 2. The magnet assembly according to claim 1, wherein the other end of the casing is a closed end, and a gap is provided between the closed end and the other end surface of the iron core. 3. The magnet assembly according to claim 1, wherein the other end of the casing is a closed end, and a spacer made of a non-magnetic material is disposed between the closed end and the other end surface of the iron core. Three-dimensional. 4. The other end of the casing is a closed end, and another permanent magnet is disposed between the closed end and the other end surface of the iron core, and the permanent magnet faces the closed end of the casing. 2. The magnet assembly according to claim 1, wherein the one magnetic pole is provided on an outer surface and the other magnetic pole is provided on an inner surface facing the other end surface of the iron core. 5. The magnet assembly according to claim 1, wherein the casing is open at both ends, and the open ends and both end surfaces of the iron core are magnetic attraction surfaces. 6. The magnet assembly according to claim 1, wherein the permanent magnet is a ferrite magnet. 7. The magnet assembly according to claim 1, wherein the permanent magnet is a cylindrical permanent magnet. 8. The magnet assembly according to claim 7, wherein the permanent magnet comprises a plurality of arc-shaped magnet pieces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9171178A JPS5518075A (en) | 1978-07-27 | 1978-07-27 | Magnet for attraction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9171178A JPS5518075A (en) | 1978-07-27 | 1978-07-27 | Magnet for attraction |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5518075A JPS5518075A (en) | 1980-02-07 |
| JPS6110965B2 true JPS6110965B2 (en) | 1986-04-01 |
Family
ID=14034089
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9171178A Granted JPS5518075A (en) | 1978-07-27 | 1978-07-27 | Magnet for attraction |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5518075A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5186607B1 (en) * | 2012-07-10 | 2013-04-17 | 東和パーツ株式会社 | Magnet holder, magnetic holding device using the same, and injection mold |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6317599A (en) * | 1986-07-09 | 1988-01-25 | 三菱電線工業株式会社 | Insulating substrate |
| JPH0758824B2 (en) * | 1986-10-29 | 1995-06-21 | 三井東圧化学株式会社 | Wiring board |
-
1978
- 1978-07-27 JP JP9171178A patent/JPS5518075A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5186607B1 (en) * | 2012-07-10 | 2013-04-17 | 東和パーツ株式会社 | Magnet holder, magnetic holding device using the same, and injection mold |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5518075A (en) | 1980-02-07 |
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