JPS5814576Y2 - Magnetization/demagnetization adjuster - Google Patents

Description

【考案の詳細な説明】 この考案は、計器等に使用する永久磁石材料の着磁、減
磁調整器に関する。[Detailed Description of the Invention] This invention relates to a magnetization and demagnetization regulator for permanent magnet materials used in instruments and the like.

計器用回路に使用する永久磁石等の着磁は、特定の安定
した磁力を得るために、−たん飽和着磁を行ったのち逆
磁場にかけて所定磁力にまで減磁する方法が採られる。When magnetizing permanent magnets used in instrument circuits, in order to obtain a specific and stable magnetic force, a method is adopted in which the permanent magnets are magnetized to -temporal saturation and then demagnetized to a predetermined magnetic force by applying a reverse magnetic field.

第１図はそのための従来装置を例示するもので、磁心９
に励磁コイル１０を取付け、異極性Ｎ、Ｓとなる磁芯の
極面に永久磁石材料８の極性を形成させるべき端面を接
触させ、励磁コイル１０に通電し、前記磁石材料を飽和
着磁するに必要な磁場を発生させて着磁する。Figure 1 shows an example of a conventional device for this purpose.
Attach an excitation coil 10 to the magnet, bring the end face of the permanent magnet material 8 to which polarity is to be formed into contact with the pole faces of the magnetic cores having different polarities N and S, and energize the excitation coil 10 to saturately magnetize the magnet material. generate the necessary magnetic field and magnetize it.

ついで励磁コイル１０の接続を切換えて通電し、前記着
磁の際とは極性の反対の磁場を発生させるか、または永
久磁石材料８の向きを逆にして磁芯の極面に接触させて
逆磁場中に永久磁石材料をおくことにより、減磁する。Next, the connection of the excitation coil 10 is switched and energized to generate a magnetic field with a polarity opposite to that during magnetization, or the direction of the permanent magnet material 8 is reversed and brought into contact with the pole face of the magnetic core. By placing a permanent magnet material in a magnetic field, it is demagnetized.

流れ作業の組立て工場等では、着磁装置と減磁装置を別
個に設けて、着磁と減磁調整とが別の工程で行われるこ
とがある。In an assembly factory or the like where assembly line operations are performed, a magnetizing device and a demagnetizing device are sometimes provided separately, and magnetization and demagnetization adjustment are performed in separate processes.

上記着磁用電源としては、コンデンサーに高電圧を充電
し、１０００〜１００００ Ａのパルス大電流を励磁コ
イルに瞬間流すコンデンサー電源、または１０〜１００
Ａ程度の連続的な直流電源が用いられる。The magnetizing power source may be a capacitor power source that charges a capacitor with a high voltage and instantaneously flows a pulsed large current of 1000 to 10000 A to an exciting coil, or a 10 to 100
A continuous DC power source of about A is used.

前者のコンデンサー電源を用いるものは励磁コイル巻数
が少くてよく、装置が小型で着磁時間も短かい長所があ
るが、電源設置費用が嵩む欠点がある。The former type, which uses a capacitor power supply, has the advantage that the number of turns of the excitation coil is small, the device is small, and the magnetization time is short, but the disadvantage is that the cost of installing the power supply is high.

また後者の直流電源を用いるものは励磁コイル巻数が前
者の数十倍になって装置全体が大きくなり、スペースの
制約を受けるのみならず、巻線増大による時間遅れがあ
り、着磁時間を長くする必要から能率が低下し、消費電
力も大きい欠点がある。In addition, in the latter case, which uses a DC power supply, the number of turns of the excitation coil is several dozen times that of the former, making the entire device larger, which not only limits space, but also causes time delays due to the increased number of windings, which lengthens the magnetization time. The disadvantage is that the efficiency decreases due to the need to do so, and the power consumption is also large.

また何れにしても電磁回路を使用するがら電源が必要で
あり、設置および使用場所上の制約を受けるのみならず
、減磁調整すべき永久磁石材料にはばらつきがあるので
、所望の磁力が得られない場合には、再度着磁、減磁調
整をやり直す必要があり、その都度、電力を消費する問
題がある。In any case, although an electromagnetic circuit is used, a power source is required, and not only are there restrictions on installation and use location, but there are also variations in the permanent magnet material that must be demagnetized, so it is difficult to obtain the desired magnetic force. If this is not possible, it is necessary to perform magnetization and demagnetization adjustment again, and there is a problem in that power is consumed each time.

本案は上記した欠点を解消するもので、永久磁石の磁気
回路を使用したことによって電源を不要ならしめ、移動
容易、操作簡便で、しがも確実な調整効果が得られる着
磁、減磁調整器を提供するものである。This project solves the above-mentioned drawbacks, and uses a permanent magnet magnetic circuit to eliminate the need for a power source, making it easy to move, easy to operate, and provide reliable adjustment effects for magnetization and demagnetization adjustment. It provides equipment.

以下図面に従って本案の構成、作用を説明する。The structure and operation of the present invention will be explained below with reference to the drawings.

第２図は本考案の着磁、減磁調整器の一実施例であり、
その平面を示す。Figure 2 shows an embodiment of the magnetization/demagnetization adjuster of the present invention.
Show the plane.

同図において、１は着磁用の永久磁石磁気回路であって
、永久磁石６は左右の平行２辺がＮ、Ｓ異極を形威し、
着磁すべき永久磁石材料を飽和着磁するに十分強力な磁
界を発生するものが使用される。In the figure, 1 is a permanent magnet magnetic circuit for magnetization, and the permanent magnet 6 has two parallel sides on the left and right having different polarities of N and S.
A magnet that generates a magnetic field strong enough to saturately magnetize the permanent magnet material to be magnetized is used.

２は減磁用永久磁石磁気回路であって、軸方向に長い永
久磁石６、の左右の平行２辺がＳ、Ｎ異極を形威し、概
十行２極面に接してそれぞれ一方に向って巾が次第に拡
大する楔形の磁極片７，７が設けてあり、従って着磁用
永久磁石磁気回路１の平行２辺を減磁用永久磁石磁気回
路２の方向へ延長した平行２辺上では、第２図例では、
着磁用の磁気回路１に近い始端から離間方向終端に向っ
て連続的に減磁力が増大する着磁用とは逆極性の磁界が
形成される。Reference numeral 2 denotes a permanent magnet magnetic circuit for demagnetization, in which the two parallel sides of the left and right sides of the permanent magnet 6, which are long in the axial direction, form S and N different poles, and are in contact with the approximately 10-row bipolar surface and are connected to one side, respectively. Wedge-shaped magnetic pole pieces 7, 7 whose width gradually increases in the direction are provided, so that the two parallel sides of the permanent magnet magnetic circuit 1 for magnetization are extended in the direction of the permanent magnet magnetic circuit 2 for demagnetization. So, in the example in Figure 2,
A magnetic field with a polarity opposite to that for magnetization is formed in which the demagnetizing force increases continuously from the starting end close to the magnetic circuit 1 for magnetization toward the end in the direction of separation.

４は非磁性の架台であって、この架台上に着磁用永久磁
石磁気回路１と減磁用永久磁石磁気回路２とが、磁力作
用のない距離を隔てるため黄銅、アルミ等の非磁性隔離
片３を介在させて同軸上に直線的に整列して固定される
。Reference numeral 4 denotes a non-magnetic mount, on which the permanent magnet magnetic circuit 1 for magnetization and the permanent magnet magnetic circuit 2 for demagnetization are placed, with a non-magnetic isolator made of brass, aluminum, etc. separated from each other by a distance where no magnetic force acts. They are linearly aligned and fixed on the same axis with the piece 3 interposed therebetween.

固定には、実施例では上記着磁用および減磁用永久磁石
磁気回路を着磁用磁石６の平行両辺およびその延長線上
でカバーする黄銅、アルミ等の非磁性材の薄板５にて一
体に前記架台４へ固定するよう取付けである。For fixing, in the embodiment, the permanent magnet magnetic circuits for magnetization and demagnetization are integrated with a thin plate 5 made of a non-magnetic material such as brass or aluminum that covers both parallel sides of the magnetization magnet 6 and its extension. It is attached so as to be fixed to the pedestal 4.

第３図は第２図のＩＩＩ−ＩＩＩ断面矢視図であって、
永久磁石材料８が着磁中の状態にあるところを示してい
る。FIG. 3 is a cross-sectional view taken along the line III-III in FIG.
The permanent magnet material 8 is shown in a state of being magnetized.

同図にみるように、非磁性の架台４は中実軸方向に凹溝
を設け、これに着磁用永久磁石磁気回路１および隔離片
３、減磁用永久磁石磁気回路２をカバー（非磁性材の薄
板）５ごと埋めこみ、磁界略々中央部に永久磁石材料８
の着磁端部がくるように設けるのがよい。As shown in the figure, the non-magnetic mount 4 has a concave groove in the direction of the solid axis, and a cover (non-cover) for the permanent magnet magnetic circuit 1 for magnetization, the isolation piece 3, and the permanent magnet magnetic circuit 2 for demagnetization. A thin plate of magnetic material) 5 is embedded, and a permanent magnet material 8 is placed approximately in the center of the magnetic field.
It is best to install the magnet so that the magnetized end of the

前記、減磁用永久磁石磁気回路２は楔形磁極片７．７を
用いる代りに永久磁石６泪体を長軸の２等辺台形として
もよい。In the demagnetizing permanent magnet magnetic circuit 2 described above, instead of using the wedge-shaped magnetic pole pieces 7, 7, the permanent magnet 6 may have an isosceles trapezoid shape with its long axis.

第４図は本考案の着磁、減磁調整器の他の実施例の平面
図である。FIG. 4 is a plan view of another embodiment of the magnetization/demagnetization adjuster of the present invention.

さきの実施例が軸方向一方へ連続的に減磁力が増大する
減磁用永久磁石磁気回路を備えるに対して、この実施例
は軸方向一方へ段階的に減磁力が増大するよう減磁用回
路２を設けた例であって、減磁用永久磁石磁気回路２は
減磁調整用として段階的に磁力が異なるよう、容積を段
階的に大きくした複数個の永久磁石６、−ｎが直列に配
置され、従って着磁用永久磁石磁気回路１の平行２辺を
該減磁用永久磁石磁気回路２の方向へ延長した平行２辺
上では、着磁用とは逆極性の一方に向って段階的に増大
する磁界が形成される。While the previous embodiment includes a permanent magnet magnetic circuit for demagnetization in which the demagnetizing force increases continuously in one direction in the axial direction, this embodiment has a permanent magnet magnetic circuit for demagnetization in which the demagnetizing force increases stepwise in one direction in the axial direction. This is an example in which a circuit 2 is provided, and the permanent magnet magnetic circuit 2 for demagnetization includes a plurality of permanent magnets 6, -n whose volumes are increased in stages, arranged in series so that the magnetic force is gradually different for demagnetization adjustment. Therefore, on the two parallel sides extending the two parallel sides of the permanent magnet magnetic circuit 1 for magnetization in the direction of the permanent magnet magnetic circuit 2 for demagnetization, the magnetic circuit 1 has a polarity opposite to that for magnetization. A stepwise increasing magnetic field is created.

その他はさきの実施例と変るところはない。第５図は、
第２図および第４図の着磁、減磁調整器において、着磁
調整すべき永久磁石材料８の極片が接する部分、すなわ
ち実施例図ではカバー５の両側位置における磁場の分布
を示し、実線は第４図実施例のものの着磁および減磁回
路の磁界分布図、破線は第２図実施例のものの減磁回路
部分の磁界分布図である。Other aspects are the same as the previous embodiment. Figure 5 shows
In the magnetization and demagnetization adjusters shown in FIGS. 2 and 4, the magnetic field distribution is shown at the portion where the pole pieces of the permanent magnet material 8 to be magnetized are in contact, that is, at both sides of the cover 5 in the example diagram, The solid line is a magnetic field distribution diagram of the magnetizing and demagnetizing circuit of the embodiment shown in FIG. 4, and the broken line is a magnetic field distribution diagram of the demagnetizing circuit portion of the embodiment shown in FIG.

このように、着磁ゾーンＡでは永久磁石材料８が十分着
磁飽和する磁場の強さをもち、他方の減磁ゾーン８部分
では、連続的にまたは段階的に、逆磁場が増加している
ために、どの位置で減磁するかを選択することにより、
永久磁石材料８を容易に所望の磁力に調整することがで
きる。In this way, in the magnetized zone A, the magnetic field has a strength enough to saturate the permanent magnet material 8, and in the other demagnetized zone 8, the reverse magnetic field increases continuously or in stages. By selecting where to demagnetize,
The permanent magnet material 8 can be easily adjusted to a desired magnetic force.

この場合、第４図実施例の如く、段階的に逆磁場が増加
するよう設けたものでは、減磁する永久磁石材料８の装
着位置に多少のずれがあっても、調整磁力がばらつかな
い使い易さがある。In this case, if the reverse magnetic field is provided to increase stepwise as in the embodiment shown in FIG. It is easy to use.

例えば、第６図は本考案の着磁、減磁調整器を用いて行
った計器用永久磁石材料８の減磁特性図であるが、永久
磁石材料８がこの減磁特性の成る部分、例えば同図の横
軸座標４の位置が最適とした場合に、着磁用回路１で第
３図の如くにして飽和着磁した永久磁石材料８を第４図
の調整器の減磁回路２中の、永久磁石６４の位置に図示
の如く載置すればよいことが理解される。For example, FIG. 6 is a diagram showing the demagnetization characteristics of the permanent magnet material 8 for instruments using the magnetization/demagnetization adjuster of the present invention. When the position of the horizontal axis coordinate 4 in the same figure is optimal, the permanent magnet material 8 that has been saturated magnetized in the magnetizing circuit 1 as shown in FIG. It is understood that the permanent magnet 64 may be placed as shown in the figure.

なお前述したように、永久磁石材料自身に性能のばらつ
きがあるので、その性能に応じた磁力を得るようにガウ
スメータ等で磁力を測定しながら、着磁、減磁操作をす
るのがよい。As mentioned above, since the performance of the permanent magnet material itself varies, it is preferable to perform magnetization and demagnetization operations while measuring the magnetic force with a Gauss meter or the like so as to obtain a magnetic force that corresponds to the performance.

この考案によれば、計器組立工場等において、流れ作業
の工程中に組入れて着磁、減磁作業を著しく能率化し、
また自動化することもできる。According to this invention, magnetization and demagnetization work can be significantly streamlined by incorporating it into the assembly line work process in instrument assembly factories, etc.
It can also be automated.

また本考案調整器は最近のエネルギー積の大きい永久磁
石の出現で、従来の励磁コイル型のものに較べて非常に
小型にでき、電源を要しないので設置や移動が容易であ
るのみならず、電力費や維持費を必要とせず、また故障
も生じない大きな利点がある。In addition, with the recent advent of permanent magnets with a large energy product, the regulator of the present invention can be made much smaller than the conventional excitation coil type, and does not require a power source, making it easy to install and move. It has the great advantage of not requiring electricity or maintenance costs, and does not cause breakdowns.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は従来の着磁用および減磁用磁場発生装置の機構
説明図、第２図は本考案の着磁、減磁調整器の一実施例
を示す平面図、第３図は第２図ＩＩＩＩＩＩ断面矢視図
、第４図は本考案の着磁、減磁調整器の他の実施例を示
す平面図、第５図は本考案の着磁、減磁調整器の磁界分
布側図、第６図は本考案の着磁、減磁調整器を用いて行
った永久磁石材料の着磁、減磁特性図である。 １：着磁用永久磁石磁気回路、２：減磁用永久磁石磁気
回路、３：非磁性隔離片、４：非磁性架台、５：非磁性
薄板（カバー）、６，６．−ｎ：永久磁石、７：磁極片
、８：永久磁石材料、９：磁芯、１０：励磁コイル。Fig. 1 is an explanatory diagram of the mechanism of a conventional magnetic field generator for magnetization and demagnetization, Fig. 2 is a plan view showing an embodiment of the magnetization and demagnetization adjuster of the present invention, and Fig. 3 is a diagram showing the mechanism of a conventional magnetic field generator for magnetization and demagnetization. Figure III is a cross-sectional view taken from the arrow, Figure 4 is a plan view showing another embodiment of the magnetization/demagnetization regulator of the present invention, and Figure 5 is a side view of the magnetic field distribution of the magnetization/demagnetization regulator of the present invention. , FIG. 6 is a diagram showing the magnetization and demagnetization characteristics of a permanent magnet material using the magnetization and demagnetization adjuster of the present invention. 1: Permanent magnet magnetic circuit for magnetization, 2: Permanent magnet magnetic circuit for demagnetization, 3: Nonmagnetic isolation piece, 4: Nonmagnetic mount, 5: Nonmagnetic thin plate (cover), 6, 6. -n: permanent magnet, 7: magnetic pole piece, 8: permanent magnet material, 9: magnetic core, 10: excitation coil.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 平行２辺が異極を形成する着磁用の永久磁石磁気回路１
と、上記平行２辺の延長２辺側に異極が形成され且つ段
階的にまたは連続的に減磁力が軸方向一方へ増大する減
磁用の永久磁石磁気回路２とを、非磁性隔離片３を介し
て同軸上に整列させ、非磁性の架台４に設置したことを
特徴とする着磁、減磁調整器。Permanent magnet magnetic circuit 1 for magnetization where two parallel sides form different poles
and a permanent magnet magnetic circuit 2 for demagnetization in which different poles are formed on the two extended sides of the two parallel sides and the demagnetizing force increases stepwise or continuously in one direction in the axial direction. 3. A magnetization/demagnetization adjuster characterized in that the magnetization/demagnetization adjuster is arranged coaxially through the magnets 3 and installed on a non-magnetic pedestal 4.