JPS6354782A - Noncontact type potentiometer - Google Patents
Noncontact type potentiometerInfo
- Publication number
- JPS6354782A JPS6354782A JP61198775A JP19877586A JPS6354782A JP S6354782 A JPS6354782 A JP S6354782A JP 61198775 A JP61198775 A JP 61198775A JP 19877586 A JP19877586 A JP 19877586A JP S6354782 A JPS6354782 A JP S6354782A
- Authority
- JP
- Japan
- Prior art keywords
- rotor
- magnetic
- elements
- yoke
- magnetic field
- 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.)
- Pending
Links
- 230000005291 magnetic effect Effects 0.000 claims abstract description 35
- 230000005294 ferromagnetic effect Effects 0.000 claims abstract description 19
- 239000000758 substrate Substances 0.000 claims abstract description 8
- 239000000696 magnetic material Substances 0.000 claims abstract description 5
- 230000005389 magnetism Effects 0.000 claims 1
- 230000000694 effects Effects 0.000 description 5
- 229910003271 Ni-Fe Inorganic materials 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000005415 magnetization Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
Landscapes
- Adjustable Resistors (AREA)
- Hall/Mr Elements (AREA)
Abstract
Description
【発明の詳細な説明】
Clrl工業上用分野1
この発明は、ロータを回転させる31接触式ポテンショ
メータに関し、特には磁気力により抵抗値が減少する強
ド)例磁気抵抗素子を用いた非接触式ポテンショメータ
に関する。Detailed Description of the Invention: Clrl Industrial Field 1 This invention relates to a 31 contact type potentiometer that rotates a rotor, and particularly to a non-contact type potentiometer that uses a strong magnetoresistive element in which the resistance value is reduced by magnetic force. Concerning potentiometers.
[従来の技術〕
非接触ポjンシ3メ〜りの磁気回路は、従来より有底円
筒状コアや回転1if1月休および永久m石とと−bに
、11回路とし、て(に成され、回転(、fl性体の先
端部分に形成した間隙に磁気低抗素了である1nSnを
Rnして回転磁性体の回転に応じた出力を発生するよう
になっており、回転磁性体の先端部分に形成した間隙の
大きさを変えることにより換言すれば回転磁性体め先端
を所定の形状に加工することにより前述したようなl
nsb 製の磁気抵抗素子から所定の関数出力を19で
いる。[Prior art] The magnetic circuit of a non-contact 3-way magnetic circuit has traditionally been constructed as (11 circuits) using a bottomed cylindrical core, a rotating 1/1 month holiday, and a permanent magnet. , rotation (fl) Rn of 1nSn, which has a low magnetic resistance, is placed in the gap formed at the tip of the rotating magnetic body to generate an output corresponding to the rotation of the rotating magnetic body. By changing the size of the gap formed in the part, in other words, by processing the tip of the rotating magnetic body into a predetermined shape, the l
The predetermined function output from the magnetoresistive element made of NSB is 19.
[発明が解決しようとする問題点]
この場合、先に提案した特願昭6l−722C1I号で
は、永久磁石の磁力線とロータの平面とが平行となるよ
うに配設されていることから全体的に径方向に大となっ
て、この方向の大型化を18く問題がある。[Problem to be solved by the invention] In this case, in the previously proposed Japanese Patent Application No. 61-722C1I, the lines of magnetic force of the permanent magnets are arranged so as to be parallel to the plane of the rotor. This increases the size in the radial direction, and there is a problem in increasing the size in this direction.
この発明は上記の事情に鑑みてなされたもので、ロータ
に対する径方向の大型化づることがなくなり径方向の小
型化が計られるといった寸ぐれた効果を有する非接触式
ボテンシ]メータを提供することを目的とする。The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a non-contact potentiometer that has the extraordinary effect of preventing the rotor from increasing in size in the radial direction and reducing the size in the radial direction. With the goal.
[問題点を解決するための手段]
この発明は、ハウジングと、このハウジング内に回転可
能に設けられたロータと、このヨークに略同心的で該ロ
ー、夕から所定の間隔を隔てるようにして配設され、全
体的に環状を成し平面方向が前記ロータの回転軸心yノ
向と平行に配設された強磁性磁気抵抗素子を有する絶縁
基板と、前記ロータと一体回転するように取り付けられ
両端部に前記回路工、を板の強磁性磁気抵抗素子を挟む
延出部が形成された断面が口字状の磁性材製のヨークと
、この]−りの延山部に前記ロータの回転軸の方向に沿
う磁力線を有するように設けられ前記強磁性磁気抵抗素
子とで閉ld路を形成Jる1社界発生手段とを備えた構
成を採用している。[Means for Solving the Problems] The present invention includes a housing, a rotor rotatably provided within the housing, and a rotor that is substantially concentric with the yoke and is spaced a predetermined distance from the yoke. an insulating substrate having a ferromagnetic magnetoresistive element arranged in an annular shape as a whole and whose plane direction is parallel to the y-direction of the rotational axis of the rotor; and an insulating substrate mounted so as to rotate integrally with the rotor. A yoke made of a magnetic material and having a cross-section shaped like an opening is formed with an extension portion sandwiching the ferromagnetic magnetoresistive element of the plate at both ends thereof; The magnetic field generating means is provided with magnetic force lines along the axial direction and forms a closed path with the ferromagnetic magnetoresistive element.
[作用]
上記のように構成したこの発明によれば、口、−タの径
方向に対しては寸法が小さくなり、結果として、その方
向に小型化できるようになる。[Function] According to the present invention configured as described above, the dimensions of the mouth and the mouth are reduced in the radial direction, and as a result, the size can be reduced in that direction.
[発明の効果]
上記のように構成したこの発明によれば、ロータの回転
軸心1ノ向に細長い形状のボブンショメータが15Iら
れ、狭い場所にも設詔できるという効果がある。[Effects of the Invention] According to the present invention configured as described above, the bobbinometer 15I having an elongated shape in the direction of the rotational axis of the rotor 15I is advantageous in that it can be installed even in a narrow place.
[実施例]
以下この発明の実施例を図面に基づいて説明する。第1
図に本発明の一実施例を示し、同図(a )にその上面
図、同図(b)に図(a >中における△−AI断面図
を示す。図にJ3いての構成は、回路基板としての絶縁
基板1上に、開口部を持つ円形または多角形の形状で、
Ni −Fe 、 Ni −GOなどの薄膜から成る
強磁性磁気抵抗素子2a、2bを形成し、その開口部の
一方の端子3を電源電圧にVCCに接続し、もう一方の
端子4を接地(GND)している。(いわゆるハーフブ
リッジを形成)。また、強磁性磁気抵抗素子2a、2b
内から出力端子5を取り出し、出力youtに接LAし
ている。そして、強磁性1.41気抵抗素子2a、2b
と所定の間隔をもって半円弧状の永久磁石6が絶縁基板
1の強磁性1社気抵抗素子2a、2b側に取り付けられ
ている。[Example] Hereinafter, an example of the present invention will be described based on the drawings. 1st
The figure shows one embodiment of the present invention, and figure (a) shows its top view, and figure (b) shows the Δ-AI cross-sectional view in figure (a).The configuration at J3 in the figure is a circuit. On an insulating substrate 1 as a substrate, a circular or polygonal shape having an opening,
Ferromagnetic magnetoresistive elements 2a and 2b made of thin films such as Ni-Fe and Ni-GO are formed, one terminal 3 of the opening is connected to the power supply voltage VCC, and the other terminal 4 is grounded (GND). )are doing. (forming a so-called half bridge). In addition, ferromagnetic magnetoresistive elements 2a, 2b
The output terminal 5 is taken out from inside and connected to the output yout. And ferromagnetic 1.41 Ω resistance elements 2a, 2b
Semicircular arc-shaped permanent magnets 6 are attached to the ferromagnetic resistance elements 2a and 2b side of the insulating substrate 1 at a predetermined interval.
この様子ないしは態様をさらに詳らかに述べると、上端
閉塞型の筒状ハウジング7内には円盤状のロータ8が配
設されており、ロータ8の回転軸9は上下方向に指向し
、ハウジング7の上面部を貫通し軸受10により支持さ
れている。ハウジング7の下端開口部にはケース11が
閉塞状態に設けられ、その上面には段付き円柱状の静止
部材12が回転軸つと同心的になるように一体に形成さ
れている1、静止部材12の径大部12aの外周縁部に
は−nJ撓慴の絶縁基板1が装着されている。13は磁
性材料によりコの字状に形成された]−りで、これはハ
ウジング7内に配置され、[1−り8の下面に取り付け
られている、1この]−り13の上下の延出部13a、
13bは静止部材12の径大部12aを19み方向から
挟むように位置している。磁界発生手段としての永久磁
石6はヨー・り13における延出部13aの下面に接着
剤により取り付けられ、その磁力線の方向を第1図(a
)にMで示すように回転軸9および静止部材12の軸方
向に指向させている。そして、ヨーク13の延出部13
a、13bならびに強磁性磁気抵抗素子2aでちって永
久材1石6の閉磁路が形成されるようになっている。To describe this state or mode in more detail, a disc-shaped rotor 8 is disposed inside the cylindrical housing 7 with a closed top end, and the rotation axis 9 of the rotor 8 is oriented in the vertical direction. It passes through the upper surface and is supported by a bearing 10. A case 11 is provided in a closed state at the lower end opening of the housing 7, and a stepped cylindrical stationary member 12 is integrally formed on the upper surface of the housing 7 so as to be concentric with the rotating shaft. An insulating substrate 1 of -nJ flexibility is attached to the outer peripheral edge of the large diameter portion 12a. Reference numeral 13 is a U-shaped rib made of a magnetic material, which is disposed within the housing 7 and attached to the lower surface of the rib 8. Exit part 13a,
13b are positioned to sandwich the large diameter portion 12a of the stationary member 12 from the 19-view direction. A permanent magnet 6 as a magnetic field generating means is attached to the lower surface of the extension 13a of the yaw wheel 13 with adhesive, and the direction of the magnetic field lines is set as shown in FIG.
) is oriented in the axial direction of the rotating shaft 9 and the stationary member 12 as shown by M. Then, the extending portion 13 of the yoke 13
A, 13b and the ferromagnetic magnetoresistive element 2a form a closed magnetic path of one permanent material 6.
また、永久磁石6は強++a性tn気抵抗素子2a、2
bの中心を回転軸の中心にして強!a+!lIa気低抗
素72a、2bの周方向に回転するものであり、永久磁
石6が強磁性磁気抵抗素子2aに向けて発生する1社界
の強1なの絶体値は強1.n性ta気抵抗素子2a12
bの飽和磁界弾痕以上となるように実論例上、設定され
ている。また、その磁界は@i磁性磁気抵抗素了2aの
周方向に垂直な方向すなわち、半径方向に印加されてい
る。Further, the permanent magnet 6 is made up of strong ++a tn resistive elements 2a, 2.
Make the center of b the center of the rotation axis and strengthen! a+! The permanent magnet 6 rotates in the circumferential direction of the ferromagnetic magnetoresistive element 2a, and the absolute value of the strength 1 of the magnetic field generated by the permanent magnet 6 toward the ferromagnetic magnetoresistive element 2a is strong 1. N-type resistance element 2a12
In practical terms, it is set to be equal to or higher than the saturation magnetic field bullet hole of b. Further, the magnetic field is applied in a direction perpendicular to the circumferential direction of the @i magnetic magnetoresistive element 2a, that is, in a radial direction.
つぎに上記のように構成したボーjンシ]メータの作用
について説明する。Next, the operation of the blank meter configured as described above will be explained.
強磁性磁気抵抗素子2a、2bは永久磁石6により電流
方向に対して垂直の方向から磁界を受けるとその抵抗値
が減少する。そして永久磁石6が強磁性磁気抵抗素子2
a 、2bの周方向に回転することにより強磁性磁気抵
抗索子2a、2b内の抵抗値減少部分も連続的に回転移
動する。このため接地端子4と出力端子5との間の抵抗
(直と、出力端子5と電源電圧VCCの端子3との抵抗
値との比によって決定される電源電圧Vccの分圧値と
しての出力Vou tの賄は第2図に丞すような直線性
を持ったものとなる。なお、第2図において回転角度0
度とは第1図における永久4石6の直線の辺6aが図中
のB−BFiに垂直であり、また、図中左側に永久磁石
6が配置するとぎである。また、第2図はその位置から
第1図において右回転する特性を示しているが、回転方
向はどちらでもいいものである。、そして、強ta性(
・n気抵抗素子2a、2bは第3図のグラフにその特性
(実線)を示す如く飽和磁界(−点鎖線)以上の磁界強
度(絶体値)を受けるとその抵抗値の減少が一定となる
(抵抗値が略・一定となる)ため、充分な磁界が素子2
a 、2bに作用するようにづれば出力VOIJtの値
が、永久H1’/E6の取り付は誤差および着磁強度の
多少の変動に依rfVることがなくなる。そしてこの点
については先に提案した特願昭61−72201と同様
である。なお、第3図においてl nSbの特性を点線
で示すが、l nSbは磁界強度が大となる程抵抗値が
人となることが分かる。When the ferromagnetic magnetoresistive elements 2a and 2b receive a magnetic field from the permanent magnet 6 in a direction perpendicular to the current direction, their resistance values decrease. And the permanent magnet 6 is the ferromagnetic magnetoresistive element 2
By rotating in the circumferential direction of the ferromagnetic magnetoresistive cables 2a and 2b, the resistance decreasing portions in the ferromagnetic magnetoresistive cables 2a and 2b also rotate continuously. Therefore, the output Vou as a divided voltage value of the power supply voltage Vcc is determined by the ratio of the resistance (direct) between the grounding terminal 4 and the output terminal 5 and the resistance value between the output terminal 5 and the terminal 3 of the power supply voltage VCC. The rotation angle t has linearity as shown in Figure 2.In Figure 2, the rotation angle is 0.
The degree is that the straight side 6a of the permanent magnet 6 in FIG. 1 is perpendicular to B-BFi in the figure, and the permanent magnet 6 is placed on the left side in the figure. Further, although FIG. 2 shows the characteristic of clockwise rotation from that position in FIG. 1, the rotation direction may be either direction. , and the strong tacity (
・As shown in the graph of Fig. 3 (solid line), when the n-air resistance elements 2a and 2b are subjected to a magnetic field strength (absolute value) greater than the saturation magnetic field (-dotted chain line), the decrease in resistance value is constant. (resistance value is approximately constant), sufficient magnetic field is applied to element 2.
a, 2b, the value of the output VOIJt will not change rfV due to errors and slight fluctuations in the magnetization strength when installing the permanent H1'/E6. This point is similar to the previously proposed patent application No. 72201/1983. In FIG. 3, the characteristics of lnSb are shown by dotted lines, and it can be seen that the resistance value of lnSb increases as the magnetic field strength increases.
このように上記の構成では、永久磁石6をこれの磁気力
が口〜夕8の軸方向に沿うように配設したので、従来と
相違してロータの径方向に大型化することなく、全体が
第1図(a)に刈払Wで示すようにロータの径方向に小
となり同方向に小型化できコンパクトになるといった勝
れた効果を有する非接触型ポテンシ]メータを提供する
ことができる。In this way, in the above configuration, the permanent magnet 6 is arranged so that its magnetic force is along the axial direction from the rotor to the rotor 8, so unlike the conventional case, the overall size of the rotor is not increased in the radial direction. It is possible to provide a non-contact potentiometer which has superior effects such as being smaller in the radial direction of the rotor as shown by the brush cutter W in FIG. .
つぎに、第4図(a>、(b )はこの発明の第2実施
例を示す。この第2実施例が第1実施例と相違するとこ
ろは下記の如くである。すなわら、静止部材12をリン
グ状に形成し、この静止部材12内にヨーク13を配置
し、この1−り13の延出部13a、13bが静止部材
12を上下に挟むように位置させている。このように構
成しても第1実施例と同様の効果が得られるものである
。Next, FIGS. 4(a) and 4(b) show a second embodiment of the present invention.The differences between this second embodiment and the first embodiment are as follows. The member 12 is formed into a ring shape, and the yoke 13 is disposed within this stationary member 12, and the extending portions 13a and 13b of this 1-rib 13 are positioned so as to sandwich the stationary member 12 above and below. Even if configured as follows, the same effects as in the first embodiment can be obtained.
なお、この第2実施例では第1実施例と同一部分には同
一符号を付して異なる部分のみ説明した。In this second embodiment, the same parts as those in the first embodiment are given the same reference numerals, and only the different parts have been described.
第5図はこの発明の第3実施例を示す1.この第3実施
例では、永久磁石6を第1実施例とは逆に延出部13b
側に取り付けている。FIG. 5 shows a third embodiment of the invention. In this third embodiment, the permanent magnet 6 is arranged in the extending portion 13b, contrary to the first embodiment.
It is attached to the side.
第6図はこの発明の第4実施例を示す。この第4実施例
では、永久磁石6を第2実施例とは逆に延出部13b側
に取り付けている。これら第3および第4実施例のよう
に構成しても第1実施例と同様な効果が得られるもので
ある。なお、この第3および第4実施例では、第1実施
例と同一部分には同一符号を付し一〇異なる部分のみ説
明した。FIG. 6 shows a fourth embodiment of the invention. In this fourth embodiment, the permanent magnet 6 is attached to the extending portion 13b side, contrary to the second embodiment. Even with configurations like these third and fourth embodiments, the same effects as in the first embodiment can be obtained. In the third and fourth embodiments, the same parts as in the first embodiment are given the same reference numerals, and only ten different parts have been described.
なJ3、上記実施例では強(、磁性t11気抵抗素了2
a、2bの形状は、円形または多角形であったが、形状
はこれのみに限定されず、例えば短冊状であってもよい
。In the above example, J3 is strong (, magnetic t11 resistance clear 2
Although the shapes of a and 2b are circular or polygonal, the shape is not limited to this, and may be, for example, a rectangular shape.
また、上記実施例ではt1発生手段として永久磁石6を
用いたが、磁界を発住さUる池の手段として雷■石を用
いてもよい。Further, in the above embodiment, the permanent magnet 6 is used as the t1 generating means, but a thunderstone may be used as the means for generating the magnetic field.
第1図はこの発明のボテンシー」メータの一実施例であ
り、同図(a)にその上面図、同図(b)に八−へ線の
断面図を示す3.第2図は第1図における実燕例の出力
特性を示すグラフ、第3図は強磁性磁気抵抗索子の特性
を示すグラフ、第4図(a)、(b)はこの発明の第2
実施例を足す上面図およびn面図、第5図および第6図
はこの発明の第3および第4実施例を示す縦断面図であ
る。
図中、1・・・絶縁基板(回路基板) 2a、2b・
・・強磁性磁気抵抗索子 6・・・永久飛石(磁界発生
手段) 7・・・ハウジング 8・・・ロータ 9・・
・回転@ 10・・・軸受 12・・・静止部材 13
・・・ヨー、り13a、13b、、・延出部FIG. 1 shows an embodiment of the "potency meter" according to the present invention, and FIG. 1(a) shows a top view thereof, and FIG. Fig. 2 is a graph showing the output characteristics of the real swallow example in Fig. 1, Fig. 3 is a graph showing the characteristics of the ferromagnetic magnetoresistive cable, and Figs.
A top view, an n-side view, and FIGS. 5 and 6 are vertical cross-sectional views showing third and fourth embodiments of the present invention. In the figure, 1... Insulating board (circuit board) 2a, 2b.
...Ferromagnetic magnetoresistive rope 6...Permanent flying stones (magnetic field generating means) 7...Housing 8...Rotor 9...
・Rotation @ 10... Bearing 12... Stationary member 13
...Yaw, ri 13a, 13b,...extension part
Claims (1)
るようにして配設され、全体的に環状を成し平面方向が
前記ロータの回転軸心方向と平行に配設された強磁性磁
気抵抗素子を有する絶縁基板と、 前記ロータと一体回転するように取り付けられ両端部に
前記回路基板の強磁性磁気抵抗素子を挟む延出部が形成
された断面がコ字状の磁性材製のヨークと、 このヨークの延出部に前記ロータの回転軸の方向に沿う
磁力線を有するように設けられ前記強磁性磁気抵抗素子
とで閉磁路を形成する磁界発生手段とを備えて成る非接
触式ポテンショメータ。 2)前記磁気発生手段は永久磁石であることを特徴とす
る特許請求の範囲第1項に記載の非接触式ポテンショメ
ータ。[Claims] 1) A housing, a rotor rotatably provided within the housing, and a generally annular rotor disposed substantially concentrically with the rotor and spaced apart from the rotor by a predetermined distance. an insulating substrate having a ferromagnetic magnetoresistive element whose plane direction is parallel to the rotational axis direction of the rotor; a yoke made of a magnetic material and having a U-shaped cross section and having an extension portion sandwiching a magnetoresistive element; A non-contact potentiometer comprising a magnetic magnetoresistive element and a magnetic field generating means that forms a closed magnetic path. 2) The non-contact potentiometer according to claim 1, wherein the magnetism generating means is a permanent magnet.
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP61198775A JPS6354782A (en) | 1986-08-25 | 1986-08-25 | Noncontact type potentiometer |
US07/076,891 US4835509A (en) | 1986-07-29 | 1987-07-23 | Noncontact potentiometer |
EP87110695A EP0255052B1 (en) | 1986-07-29 | 1987-07-23 | Noncontact potentiometer |
DE3788831T DE3788831T2 (en) | 1986-07-29 | 1987-07-23 | Contactless potentiometer. |
KR1019870008259A KR900007100B1 (en) | 1986-07-29 | 1987-07-29 | Non-contact potentiometer |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP61198775A JPS6354782A (en) | 1986-08-25 | 1986-08-25 | Noncontact type potentiometer |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6354782A true JPS6354782A (en) | 1988-03-09 |
Family
ID=16396719
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP61198775A Pending JPS6354782A (en) | 1986-07-29 | 1986-08-25 | Noncontact type potentiometer |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6354782A (en) |
-
1986
- 1986-08-25 JP JP61198775A patent/JPS6354782A/en active Pending
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