JP2536852Y2 - Rotation sensor - Google Patents

Rotation sensor

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Publication number
JP2536852Y2
JP2536852Y2 JP1990062558U JP6255890U JP2536852Y2 JP 2536852 Y2 JP2536852 Y2 JP 2536852Y2 JP 1990062558 U JP1990062558 U JP 1990062558U JP 6255890 U JP6255890 U JP 6255890U JP 2536852 Y2 JP2536852 Y2 JP 2536852Y2
Authority
JP
Japan
Prior art keywords
main body
conversion element
permanent magnet
substrate
magnetoelectric conversion
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 - Lifetime
Application number
JP1990062558U
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Japanese (ja)
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JPH0421964U (en
Inventor
秀博 安立
拓郎 遠藤
Original Assignee
株式会社 ゼクセル
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Publication date
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Priority to JP1990062558U priority Critical patent/JP2536852Y2/en
Publication of JPH0421964U publication Critical patent/JPH0421964U/ja
Application granted granted Critical
Publication of JP2536852Y2 publication Critical patent/JP2536852Y2/en
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Description

【考案の詳細な説明】 〔産業上の利用分野〕 本考案は回転センサに係り、特に磁電変換素子と永久
磁石と信号処理回路とを基板上にコンパクトに纏めてな
る回転センサに関する。
DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a rotation sensor, and more particularly to a rotation sensor in which a magnetoelectric conversion element, a permanent magnet, and a signal processing circuit are compactly integrated on a substrate.

〔従来の技術〕[Conventional technology]

一般に、被測定物の回転速度を検出する回転センサは
知られている。この種のものは、第4図に示すように、
被測定物(図示せず)に連結された回転軸1の軸上に、
磁性体の歯車3を止着し、この磁性体の歯車3の歯車3a
に対向してセンサ本体5を配置して構成されている。
2. Description of the Related Art Generally, a rotation sensor that detects a rotation speed of a device under test is known. This type is shown in FIG.
On the axis of the rotating shaft 1 connected to the object to be measured (not shown),
The magnetic gear 3 is fastened, and the gear 3a of the magnetic gear 3 is fixed.
The sensor body 5 is arranged so as to be opposed to.

このセンサ本体5は、第5図に示すように、磁電変換
素子7と永久磁石9とを離間し、両者間には、高透磁率
を有する集磁材11を配置して構成されている。これら構
造体の上部には、信号処理回路13が配置され、この信号
処理回路13にはリード線15が接続されている(例えば、
実開平1−25380号公報参照)。
As shown in FIG. 5, the sensor main body 5 has a configuration in which a magnetoelectric conversion element 7 and a permanent magnet 9 are separated from each other, and a magnetic collector 11 having a high magnetic permeability is arranged between the two. Above these structures, a signal processing circuit 13 is disposed, and a lead 15 is connected to the signal processing circuit 13 (for example,
See Japanese Utility Model Laid-Open Publication No. 1-25380).

〔考案が解決しようとする課題〕[Problems to be solved by the invention]

しかしながら、従来の構成では、磁電変換素子7を磁
電変換素子支持基板7aで支持し、永久磁石9及び集磁材
11を、非磁性体の集磁材支持材11aで支持し、信号処理
回路13を信号処理回路用基板13aで支持するので、その
構造が極めて複雑になるという問題がある。
However, in the conventional configuration, the magneto-electric conversion element 7 is supported by the magneto-electric conversion element support substrate 7a, and the permanent magnet 9 and the magnetic collector
Since the support 11 is supported by the nonmagnetic material magnetic material support 11a and the signal processing circuit 13 is supported by the signal processing circuit substrate 13a, there is a problem that the structure becomes extremely complicated.

また、磁電変換素子7を磁電変換素子支持基板7aで支
持するので、磁電変換素子部を小さくすることができな
いという問題がある。この磁電変換素子部を小さくする
ことができないと、狭隘な部位では、このセンサを使用
することができなくなるという問題がある。
Further, since the magnetoelectric conversion element 7 is supported by the magnetoelectric conversion element support substrate 7a, there is a problem that the size of the magnetoelectric conversion element cannot be reduced. If the size of the magnetoelectric conversion element cannot be reduced, the sensor cannot be used in a narrow area.

そこで、本考案の目的は、上述した従来の技術が有す
る問題点を解消し、磁電変換素子と永久磁石と信号処理
回路とを1つの基板上にコンパクトに纏めることができ
るとともに、狭隘な部位でも、充分に使用することので
きる回転センサを提供することにある。
Therefore, an object of the present invention is to solve the above-mentioned problems of the conventional technology, to compactly integrate the magnetoelectric conversion element, the permanent magnet, and the signal processing circuit on a single substrate, and to reduce the size of a narrow part. To provide a rotation sensor which can be used sufficiently.

〔課題を解決するための手段〕[Means for solving the problem]

上記目的を達成するために、本考案は、被測定物に連
結された磁性体からなる回転歯車(3)の歯面(3a)に
対向してセンサ本体(5)を配置し、このセンサ本体
(5)を、基板(18)と磁電変換素子(7)と永久磁石
(9)と信号処理回路(13)との組合わせにより構成し
てなる回転センサにおいて、前記基板(18)は本体部
(18a)と当該本体部(18a)よりも細長く形成され前記
回転歯車(3)の歯面(3a)に向かって突出する検出部
(18b)が設けられ、前記基板(18)の本体部(18a)に
前記永久磁石(9)および前記信号処理回路(13)が設
けられ、前記検出部(18b)内に、基端が前記永久磁石
(9)と磁気結合し、かつ先端が前記検出部(18b)の
先端に位置するよう集磁材(11)が埋設され、前記集磁
材(11)の先端に、磁電変換素子(7)が当該集磁材
(11)と磁気結合した状態で設けられたことを特徴とす
るものである。
In order to achieve the above object, the present invention provides a sensor body (5) arranged opposite a tooth surface (3a) of a rotating gear (3) made of a magnetic material connected to an object to be measured. (5) A rotation sensor comprising a combination of a substrate (18), a magnetoelectric conversion element (7), a permanent magnet (9) and a signal processing circuit (13), wherein the substrate (18) is a main body. (18a) and a detecting portion (18b) formed to be elongated than the main body (18a) and protruding toward the tooth surface (3a) of the rotary gear (3) are provided, and a main body ( The permanent magnet (9) and the signal processing circuit (13) are provided in 18a), and a proximal end is magnetically coupled to the permanent magnet (9) and a distal end is located in the detecting section (18b). A magnetic collector (11) is embedded so as to be located at the tip of (18b). Is characterized in that said collecting 磁材 (11) provided in a state where the magnetic bound.

〔作用〕[Action]

本考案によれば、基板(18)の本体部(18a)に永久
磁石(9)および信号処理回路(13)が設けられ、か
つ、本体部(18a)には当該本体部(18a)よりも細長く
形成され回転歯車(3)の歯面(3a)に向かって突出す
る検出部(18b)が設けられ、この検出部(18b)内に集
磁材(11)が埋設され、この集磁材(11)の先端に磁電
変換素子(7)が設けられているため、磁電変換素子
(7)、永久磁石(9)および信号処理回路(13)を別
部材により処理する必要がなく、その支持構造が極めて
簡単になる。
According to the present invention, the permanent magnet (9) and the signal processing circuit (13) are provided on the main body (18a) of the substrate (18), and the main body (18a) is more than the main body (18a). A detector (18b) is provided which is elongated and protrudes toward the tooth surface (3a) of the rotary gear (3), and a magnetic collector (11) is embedded in the detector (18b). Since the magnetoelectric conversion element (7) is provided at the tip of (11), it is not necessary to process the magnetoelectric conversion element (7), the permanent magnet (9), and the signal processing circuit (13) by separate members, and support the same. The structure becomes extremely simple.

また、検出部(18b)内に基端が永久磁石(9)と磁
気結合しかつ先端が検出部(18b)の先端に位置するよ
うに集磁材(11)が埋設されたので、磁電変換素子
(7)に必要な磁気を本体部(18a)に位置する永久磁
石(9)から検出部(18b)の先端に供給することがで
き、したがって、検出部(18b)が本体部(18a)よりも
細長く形成され、その検出部(18b)の先端に磁電変換
素子を配置したので、本体部(18a)が収納できないよ
うな狭隘な部位でも磁電変換素子(7)を回転歯車
(3)の歯面(3a)に接近させることができ、当該セン
サを十分に使用することができる。
In addition, since the magnetic collector (11) is buried in the detecting portion (18b) such that the base end is magnetically coupled to the permanent magnet (9) and the front end is located at the front end of the detecting portion (18b), The magnetism required for the element (7) can be supplied from the permanent magnet (9) located in the main body (18a) to the tip of the detector (18b), so that the detector (18b) can be supplied to the main body (18a). Since the magneto-electric conversion element is arranged at the tip of the detecting portion (18b), the magneto-electric conversion element (7) can be used even in a narrow portion where the main body (18a) cannot be stored. The tooth surface (3a) can be approached, and the sensor can be used sufficiently.

〔実施例〕〔Example〕

以下、本考案による回転センサの一実施例を第4図と
同一部分に同一符号を付して示した第1図乃至第3図を
参照して説明する。
Hereinafter, an embodiment of the rotation sensor according to the present invention will be described with reference to FIGS. 1 to 3 in which the same parts as those in FIG.

第1図において、1は被測定物(図示せず)に連結さ
れた回転軸を示している。この回転軸1の軸上には、磁
性体の歯車3が止着されており、この歯車3の外側に
は、該歯車3の歯面3aに対向するセンサ本体5が配置さ
れている。
In FIG. 1, reference numeral 1 denotes a rotating shaft connected to an object to be measured (not shown). A magnetic gear 3 is fixed on the rotation shaft 1, and a sensor main body 5 facing the tooth surface 3 a of the gear 3 is arranged outside the gear 3.

このセンサ本体5は、第2図に示すように、磁電変換
素子7と永久磁石9とを有し、これら両者間には、高透
磁率を保有する集磁材11が配置されている。これらは非
磁性体からなる基板18に一体的に組み込まれている。
As shown in FIG. 2, the sensor main body 5 has a magnetoelectric conversion element 7 and a permanent magnet 9, and a magnetic collector 11 having a high magnetic permeability is arranged between the two. These are integrated into a substrate 18 made of a non-magnetic material.

この基板18は、第3図に示すように、本体部18aと検
出部18bとからなり、本体部18aには、永久磁石9を組み
込むための受け孔19が穿設されるとともに、検出部18b
は本体部18aの一端(回転歯車3の歯面3aに面する側の
端部)に、本体部18aよりも幅狭の細長い形状で突設さ
れており、この検出部18bには、この受け孔19に連通し
て、集磁材11を埋設するための通し孔20が穿設されてい
る。
As shown in FIG. 3, the substrate 18 includes a main body 18a and a detector 18b. The main body 18a is provided with a receiving hole 19 for incorporating the permanent magnet 9 and a detector 18b.
Is protruded from one end of the main body 18a (the end on the side facing the tooth surface 3a of the rotary gear 3) in an elongated shape narrower than the main body 18a. A through hole 20 for burying the magnetic flux collecting material 11 is formed in communication with the hole 19.

しかして、この実施例によれば、磁電変換素子7と永
久磁石9と信号処理回路13とは、単一の基板18上に支持
され、この基板18のうち、磁電変換素子7を支持する検
出部18bは、その他の本体部18aよりも小さく形成されて
いる。
Thus, according to this embodiment, the magneto-electric conversion element 7, the permanent magnet 9, and the signal processing circuit 13 are supported on a single substrate 18, and the detection supporting the magneto-electric conversion element 7 among the substrates 18 is performed. The part 18b is formed smaller than the other main parts 18a.

このセンサ本体5の組み立てに際しては、本体部18a
の孔19及び検出部18bの孔20に、それぞれ永久磁石9及
び集磁材11を埋め込み、検出部18bの先端に、磁電変換
素子7を貼着するとともに、本体部18aの上面に、2つ
に分離した信号処理回路13を貼着する。そして、磁電変
換素子7と基板18上のパターン(図示せず)とを、接続
線21を介して接続する。
When assembling the sensor main body 5, the main body 18a
The permanent magnet 9 and the magnetism collecting material 11 are respectively embedded in the hole 19 of the detecting portion 18b and the hole 20 of the detecting portion 18b, and the magnetoelectric conversion element 7 is attached to the tip of the detecting portion 18b. The separated signal processing circuit 13 is attached. Then, the magnetoelectric conversion element 7 and a pattern (not shown) on the substrate 18 are connected via the connection line 21.

次に、この実施例の作用を説明すると、被測定物(図
示せず)の回転に伴って、磁性体からなる歯車3が回転
する。すると、歯車3の外周の凹凸に応じて、該歯車3
と永久磁石9との間を通る磁束密度に変化が生じる。よ
って、この磁束密度の変化を、磁電変換素子7により検
出し、この検出値に基づいて、被測定物(図示せず)の
回転速度を算出する。
Next, the operation of this embodiment will be described. The gear 3 made of a magnetic material rotates with the rotation of an object to be measured (not shown). Then, according to the unevenness of the outer periphery of the gear 3, the gear 3
A change occurs in the magnetic flux density passing between the magnet and the permanent magnet 9. Therefore, the change in the magnetic flux density is detected by the magneto-electric conversion element 7, and the rotation speed of the device under test (not shown) is calculated based on the detected value.

しかして、この実施例によれば、単一の基板18によ
り、磁電変換素子7、永久磁石9、集磁材11及び信号処
理回路13の全てを支持しているので、これらの支持構造
を極端に簡素化することができる。また、従来のものに
比べて、リード線15(第5図参照)が不要になるので、
コストダウンを図ることができる。さらに、基板18の検
出部18bを本体部18aよりも幅狭の細長い形状に突出して
設けたので、本体部18aを収納できない狭隘な部位であ
っても、検出部18bを挿入することができ、したがって
その先端に位置する磁電変換素子7を回転歯車3の歯面
3aに接近させることができ、当該回転センサの構成上の
自由度が向上し、使用上の制約を減少することができる
など種々の効果を奏する。
According to this embodiment, the single substrate 18 supports all of the magnetoelectric conversion element 7, the permanent magnet 9, the magnetic collector 11, and the signal processing circuit 13. Can be simplified. Also, since the lead wire 15 (see FIG. 5) is not required as compared with the conventional one,
Cost can be reduced. Further, since the detection portion 18b of the substrate 18 is provided to protrude in a narrow shape narrower than the main body portion 18a, even in a narrow portion where the main body portion 18a cannot be stored, the detection portion 18b can be inserted, Therefore, the magneto-electric conversion element 7 located at the tip thereof is
3a, so that the rotation sensor has various advantages such as an increase in the degree of freedom in configuration and a reduction in restrictions on use.

〔考案の効果〕[Effect of the invention]

本考案によれば、基板の本体部に永久磁石および信号
処理回路が設けられ、かつ、本体部には当該本体部より
も細長く形成され回転歯車の歯面に向かって突出する検
出部が設けられ、この検出部内に集磁材が埋設され、こ
の集磁材の先端に磁電変換素子が設けられているため、
磁電変換素子、永久磁石および信号処理回路を別部材に
より処理する必要がなく、その支持構造が極めて簡単に
なる。
According to the present invention, a permanent magnet and a signal processing circuit are provided on the main body of the substrate, and the main body is provided with a detection section which is formed to be narrower than the main body and protrudes toward the tooth surface of the rotary gear. Since the magnetism collecting material is buried in the detection part and the magnetoelectric conversion element is provided at the tip of the magnetism collecting material,
There is no need to process the magnetoelectric conversion element, the permanent magnet, and the signal processing circuit by separate members, and the support structure is extremely simplified.

また、検出部内に基端が永久磁石と磁気結合しかつ先
端が検出部(18b)の先端に位置するように集磁材(1
1)が埋設されたので、磁電変換素子(7)に必要な磁
気を本体部(18a)に位置する永久磁石()から検出部
(18b)の先端に供給することができ、したがって、検
出部が本体部よりも細長く形成され、その検出部の先端
に磁電変換素子を配置したので、本体部が収納できない
ような狭隘な部位でも磁電変換素子を回転歯車の歯面に
接近させることができ、当該センサを十分に使用するこ
とができる。
In addition, the magnetic collecting material (1) is positioned so that the base end is magnetically coupled to the permanent magnet and the front end is located at the front end of the detection unit (18b) in the detection unit.
Since 1) is buried, the magnetism required for the magnetoelectric conversion element (7) can be supplied from the permanent magnet () located in the main body (18a) to the tip of the detection unit (18b). Is formed longer than the main body, and the magnetoelectric conversion element is arranged at the tip of the detection unit, so that the magnetoelectric conversion element can be brought close to the tooth surface of the rotating gear even in a narrow part where the main body cannot be stored, The sensor can be fully used.

【図面の簡単な説明】[Brief description of the drawings]

第1図は本考案による回転センサの一実施例を示す平面
図、第2図はセンサ本体を示す斜視図、第3図は基板を
示す斜視図、第4図は従来の回転センサを示す平面図、
第5図は従来のセンサ本体を示す側面図である。 1……回転軸、3……歯車、3a……歯面、5……センサ
本体、7……磁電変換素子、9……永久磁石、11……集
磁材、18……基板、18a……本体部、18b……検出部。
1 is a plan view showing an embodiment of a rotation sensor according to the present invention, FIG. 2 is a perspective view showing a sensor main body, FIG. 3 is a perspective view showing a substrate, and FIG. 4 is a plan view showing a conventional rotation sensor. Figure,
FIG. 5 is a side view showing a conventional sensor main body. 1 ... rotating shaft, 3 ... gear, 3a ... tooth surface, 5 ... sensor body, 7 ... magnetoelectric conversion element, 9 ... permanent magnet, 11 ... magnetic collector, 18 ... board, 18a ... … Main unit, 18b …… Detector.

───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 平2−122271(JP,A) 実開 平2−59470(JP,U) 実開 平2−69711(JP,U) ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-2-122271 (JP, A) JP-A-2-59470 (JP, U) JP-A-2-69711 (JP, U)

Claims (1)

(57)【実用新案登録請求の範囲】(57) [Scope of request for utility model registration] 【請求項1】被測定物に連結された磁性体からなる回転
歯車の歯面に対向してセンサ本体を配置し、このセンサ
本体を、基板と磁電変換素子と永久磁石と信号処理回路
との組合わせにより構成してなる回転センサにおいて、 前記基板は本体部と当該本体部よりも細長く形成され前
記回転歯車の歯面に向かって突出する検出部が設けら
れ、 前記基板の本体部に前記永久磁石および前記信号処理回
路が設けられ、 前記検出部内に、基端が前記永久磁石と磁気結合し、か
つ先端が前記検出部の先端に位置するよう集磁材が埋設
され、 前記集磁材の先端に、磁電変換素子が当該集磁材と磁気
結合した状態で設けられたことを特徴とする回転セン
サ。
1. A sensor body is disposed facing a tooth surface of a rotating gear made of a magnetic material connected to an object to be measured, and the sensor body is connected to a substrate, a magnetoelectric conversion element, a permanent magnet, and a signal processing circuit. In the rotation sensor configured by combination, the substrate is provided with a main body portion and a detecting portion which is formed to be narrower than the main body portion and protrudes toward a tooth surface of the rotary gear, and the permanent body is provided on the main body portion of the substrate. A magnet and the signal processing circuit are provided, and a magnetic collector is embedded in the detector so that a base end is magnetically coupled to the permanent magnet and a distal end is located at a distal end of the detector. A rotation sensor, wherein a magnetoelectric conversion element is provided at a tip in a state of being magnetically coupled to the magnetic flux collecting material.
JP1990062558U 1990-06-13 1990-06-13 Rotation sensor Expired - Lifetime JP2536852Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1990062558U JP2536852Y2 (en) 1990-06-13 1990-06-13 Rotation sensor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1990062558U JP2536852Y2 (en) 1990-06-13 1990-06-13 Rotation sensor

Publications (2)

Publication Number Publication Date
JPH0421964U JPH0421964U (en) 1992-02-24
JP2536852Y2 true JP2536852Y2 (en) 1997-05-28

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
JP1990062558U Expired - Lifetime JP2536852Y2 (en) 1990-06-13 1990-06-13 Rotation sensor

Country Status (1)

Country Link
JP (1) JP2536852Y2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20220065659A1 (en) * 2020-08-31 2022-03-03 Hitachi Metals, Ltd. Rotation detection apparatus

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09133743A (en) * 1995-11-08 1997-05-20 Murata Mfg Co Ltd Magnetic sensor
JP4538166B2 (en) * 2001-06-12 2010-09-08 信越化学工業株式会社 Magnetic sensor
JP5243725B2 (en) * 2007-03-29 2013-07-24 キヤノン電子株式会社 Magnetic detection sensor
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JPS5949355B2 (en) * 1977-09-09 1984-12-01 シルバー精工株式会社 hand knitting machine
JPS59153119A (en) * 1983-02-19 1984-09-01 Hitachi Ltd Magnetic encoder
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Publication number Priority date Publication date Assignee Title
US20220065659A1 (en) * 2020-08-31 2022-03-03 Hitachi Metals, Ltd. Rotation detection apparatus
US11764649B2 (en) * 2020-08-31 2023-09-19 Proterial, Ltd. Rotation detection apparatus

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