JP4506302B2 - Mounting method and inspection method of magnet for exciting magnetic sensor - Google Patents
Mounting method and inspection method of magnet for exciting magnetic sensor Download PDFInfo
- Publication number
- JP4506302B2 JP4506302B2 JP2004189573A JP2004189573A JP4506302B2 JP 4506302 B2 JP4506302 B2 JP 4506302B2 JP 2004189573 A JP2004189573 A JP 2004189573A JP 2004189573 A JP2004189573 A JP 2004189573A JP 4506302 B2 JP4506302 B2 JP 4506302B2
- Authority
- JP
- Japan
- Prior art keywords
- magnet
- exciting
- rotating body
- jig
- magnetic sensor
- 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 - Fee Related
Links
Images
Landscapes
- Measuring Volume Flow (AREA)
- Transmission And Conversion Of Sensor Element Output (AREA)
Description
この発明は、例えばガスメータ,水道メータ等の流量センサとして用いて好適な、大バルクハウゼン効果を利用する磁気センサ、特にこのような磁気センサを励磁するための励磁用磁石の取付け方法および検査方法に関する。 The present invention relates to a magnetic sensor using a large Barkhausen effect, which is suitable for use as a flow sensor of, for example, a gas meter or a water meter, and more particularly to an attaching method and an inspection method for an exciting magnet for exciting such a magnetic sensor. .
従来、大バルクハウゼン効果を利用する流量センサは、例えば特許文献1により公知である。図2〜4はこのような流量センサを説明するための説明図である。
センサ素子は図2に示すように、大バルクハウゼン効果を利用する鉄芯2aに検出コイル2bを巻いて構成される。大バルクハウゼン効果を利用する鉄芯2aとしては、アモルファス素子を繊維状に構成したものや強磁性体のワイヤなどが知られている。
Conventionally, a flow sensor that uses the large Barkhausen effect is known from, for example, Japanese Patent Application Laid-Open No. H10-228707. 2-4 is explanatory drawing for demonstrating such a flow sensor.
As shown in FIG. 2, the sensor element is configured by winding a
図2のようなセンサ(素子)2を作動させるためには、例えば図3のように回転体(磁石ホルダ)4上にその中心を挟んで一対の励滋用磁石1を配置し、これを回転体の中心軸の周りで回転させ、磁束変化をセンサ2に与えて出力を得るものが一般的である。なお、図3(a)は上面図、同(b)は側面図を示す。
このような構成において、センサ2に対し図4(a)に示されるような磁界(磁束)Φが印加されると、印加磁界の極性が反転する度に、センサ2の検出コイル2bには図4(b)のようなパルス電圧Sが誘起される。
In order to operate the sensor (element) 2 as shown in FIG. 2, for example, as shown in FIG. 3, a pair of
In such a configuration, when a magnetic field (magnetic flux) Φ as shown in FIG. 4A is applied to the
ところで、上記のようなセンサでは、印加する磁界の方向を順次変えるようにするため、励磁用磁石の取付けに当ってはその方向を考慮しなければならず、作業が煩雑になるだけでなく取付けを誤まるおそれも生じるという問題がある。
したがって、この発明の課題は、センサを励磁するための励磁用磁石を簡単かつ正確に取り付けられるようにすることにある。
By the way, in the sensor as described above, the direction of the magnetic field to be applied is changed sequentially, so that the direction of the excitation magnet must be taken into consideration, which not only complicates the work but also attaches it. There is also a problem that a mistake may occur.
Therefore, an object of the present invention is to make it possible to easily and accurately attach an exciting magnet for exciting a sensor.
このような課題を解決するため、請求項1の発明では、大バルクハウゼン効果を有する鉄芯に印加される磁界の極性が変化する毎に電圧を出力する素子に対し、中心を挟み少なくとも一対の励磁用磁石を配置した回転体を対向設置し、回転する前記励磁用磁石から発生する磁界の変化により前記素子を動作させる磁気センサにおいて、
前記回転体に励磁用磁石を取り付けるに当たっては、回転体を一時的に固定する治具を用いるとともに、この治具には回転体に取り付けるべき励磁用磁石と対応する位置に、その励磁用磁石の回転体への取付けを許容する極性の磁石を予め固定しておくことを特徴とする。
この請求項1の発明においては、前記治具を用い、前記回転体に取り付けるべき励磁用磁石の適否を検査可能にすることができる(請求項2の発明)。
In order to solve such a problem, in the invention of
In attaching the exciting magnet to the rotating body, a jig for temporarily fixing the rotating body is used, and in this jig, the exciting magnet is positioned at a position corresponding to the exciting magnet to be attached to the rotating body. A magnet having a polarity that allows attachment to a rotating body is fixed in advance.
According to the first aspect of the present invention, it is possible to inspect the suitability of the magnet for excitation to be attached to the rotating body using the jig (the second aspect of the invention).
この発明によれば、治具を用いるようにしたので、励磁用磁石を容易かつ正確に取り付けることができるだけでなく、取り付けるべき励磁用磁石の極性の適否を正確にチェックすることができ、信頼性を向上させることができる。 According to the present invention, since the jig is used, not only can the excitation magnet be easily and accurately attached, but also the correctness of the polarity of the excitation magnet to be attached can be checked accurately, Can be improved.
図1はこの発明の実施の形態を説明するための説明図である。
図1を参照して、図3に示すような場合の磁石の取り付け方につき説明する。
例えば図3では、励磁用の磁石1を図示のような極性で磁石ホルダ4に装着する必要がある。そのためには、図1のような治具3を一時的に利用し、治具3に磁石ホルダ4を装着する。このとき、治具3の装着すべき磁石1と対応する所定位置には、磁石がそれぞれ予め設置(固定)されている。つまり、図1(b)の左側の磁石1に対しては、右側がS極で左側がN極の磁石1aを、また、右側の磁石1に対しても、右側がS極で左側がN極の磁石1bをそれぞれ配置(固定)しておく。その磁石1a,1bの極性(方向)は、磁石ホルダ4に装着すべき磁石1の極性(方向)によって決まることになる。
FIG. 1 is an explanatory diagram for explaining an embodiment of the present invention.
With reference to FIG. 1, it demonstrates per how to attach the magnet in the case as shown in FIG.
For example, in FIG. 3, it is necessary to attach the
さらには、磁石ホルダ4および治具3には、図1(a)にB部として示す部分で、両者の固定位置関係が一義的に決まるような溝および突起を形成しておくことにより、正確な位置決めがなされるようにしている。
こうすることで、治具3に磁石ホルダ4を固定し励磁用磁石1を挿入するに当り、治具3に固定された磁石の磁力により挿入すべき磁石が吸引されるようになり、磁石ホルダ4に磁石1を誤りなく容易に挿入できるようになる。以上では、磁石が1個ずつ1対の場合を説明したが2個以上の対でも良く、さらには円周上に複数対配置する場合にも同様にして適用することができる。
Furthermore, the magnet holder 4 and the jig 3 are formed with grooves and projections that are uniquely determined at the portion indicated by B in FIG. Is positioned properly.
By doing so, when the magnet holder 4 is fixed to the jig 3 and the
また、何らかの事情により、励磁用磁石1の磁石ホルダ4への取付けを誤ると、磁石ホルダ4と治具3との間に吸引(または反発)方向の力が働かないので、この性質を利用することにより、磁石1が磁石ホルダ4に正しく取り付けられているかどうかの検査(チェック)を行なうことも可能である。
In addition, if the
1,1a,1b…磁石、2…センサ(素子)、2a…鉄芯、2b…検出コイル、3…治具、4…磁石ホルダ。
DESCRIPTION OF
Claims (2)
前記回転体に励磁用磁石を取り付けるに当たっては、回転体を一時的に固定する治具を用いるとともに、この治具には回転体に取り付けるべき励磁用磁石と対応する位置に、その励磁用磁石の回転体への取付けを許容する極性の磁石を予め固定しておくことを特徴とする磁気センサ励磁用磁石の取付け方法。 The rotating body in which the rotating body having at least a pair of exciting magnets arranged between the centers is opposed to the element that outputs a voltage every time the polarity of the magnetic field applied to the iron core having the large Barkhausen effect changes, and rotates. In a magnetic sensor that operates the element by a change in a magnetic field generated from an exciting magnet,
In attaching the exciting magnet to the rotating body, a jig for temporarily fixing the rotating body is used, and in this jig, the exciting magnet is positioned at a position corresponding to the exciting magnet to be attached to the rotating body. A method of attaching a magnet for exciting a magnetic sensor, wherein a magnet having a polarity that allows attachment to a rotating body is fixed in advance.
2. The method for inspecting the attachment of a magnet for exciting a magnetic sensor according to claim 1, wherein the jig is used to inspect the suitability of the exciting magnet to be attached to the rotating body.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004189573A JP4506302B2 (en) | 2004-06-28 | 2004-06-28 | Mounting method and inspection method of magnet for exciting magnetic sensor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004189573A JP4506302B2 (en) | 2004-06-28 | 2004-06-28 | Mounting method and inspection method of magnet for exciting magnetic sensor |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2006010556A JP2006010556A (en) | 2006-01-12 |
JP4506302B2 true JP4506302B2 (en) | 2010-07-21 |
Family
ID=35777971
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2004189573A Expired - Fee Related JP4506302B2 (en) | 2004-06-28 | 2004-06-28 | Mounting method and inspection method of magnet for exciting magnetic sensor |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP4506302B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105074474A (en) * | 2013-02-22 | 2015-11-18 | 三菱电机株式会社 | Rotation speed detector |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007225536A (en) * | 2006-02-27 | 2007-09-06 | Nikkoshi Co Ltd | Device for detecting rotary motion |
US8184445B2 (en) * | 2007-02-12 | 2012-05-22 | Koninklijke Philips Electronics N.V. | Modular electric system |
JP5664304B2 (en) * | 2011-02-09 | 2015-02-04 | 三菱電機株式会社 | Magnetic position detector |
CN206237268U (en) * | 2015-12-28 | 2017-06-09 | 清华大学 | The device of permanent magnet polarity mistake is prevented in the splicing of planar motor permanent magnet array |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2000221069A (en) * | 1999-01-29 | 2000-08-11 | Matsushita Electric Ind Co Ltd | Flow rate detection device |
JP2005156173A (en) * | 2003-11-20 | 2005-06-16 | Yaskawa Electric Corp | Apparatus and method for aligning magnetic encoder |
-
2004
- 2004-06-28 JP JP2004189573A patent/JP4506302B2/en not_active Expired - Fee Related
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2000221069A (en) * | 1999-01-29 | 2000-08-11 | Matsushita Electric Ind Co Ltd | Flow rate detection device |
JP2005156173A (en) * | 2003-11-20 | 2005-06-16 | Yaskawa Electric Corp | Apparatus and method for aligning magnetic encoder |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105074474A (en) * | 2013-02-22 | 2015-11-18 | 三菱电机株式会社 | Rotation speed detector |
Also Published As
Publication number | Publication date |
---|---|
JP2006010556A (en) | 2006-01-12 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP3848670B1 (en) | Rotation angle detector | |
JP5880577B2 (en) | Motor, motor system and motor encoder | |
JP4592435B2 (en) | Small motor with encoder | |
JP6020184B2 (en) | motor | |
WO2006067878A1 (en) | Method for magnetizing ring magnet and magnetic encoder | |
JP4506302B2 (en) | Mounting method and inspection method of magnet for exciting magnetic sensor | |
JP5133765B2 (en) | Internal magnet type motor and design method thereof | |
JP4906253B2 (en) | Torque detection device | |
JP2007225536A (en) | Device for detecting rotary motion | |
JP2008061316A (en) | Brushless motor and motor sensor | |
WO2020195003A1 (en) | Motor | |
JP4656851B2 (en) | Torque detection device | |
JPH1197986A (en) | Pulse signal generating method and device therefor | |
JP4878747B2 (en) | Torque sensor | |
JP2009020064A (en) | Torque sensor and electric power steering device | |
JP2005098821A (en) | Torque detector | |
JP4036806B2 (en) | Torque detection device | |
JP4273938B2 (en) | Magnetic encoder alignment apparatus and method | |
WO2020195005A1 (en) | Rotor manufacturing method and motor manufacturing method | |
WO2020195006A1 (en) | Rotor and motor | |
KR101551468B1 (en) | Brush holder apparatus provided with hall sensor | |
JP4842658B2 (en) | Magnetic sensor device | |
JP2006234411A (en) | Oscillation gyroscope sensor | |
JP4878746B2 (en) | Torque sensor | |
WO2021181534A1 (en) | Magnetic linear position detector |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A711 | Notification of change in applicant |
Free format text: JAPANESE INTERMEDIATE CODE: A711 Effective date: 20070326 |
|
A521 | Written amendment |
Free format text: JAPANESE INTERMEDIATE CODE: A821 Effective date: 20070326 |
|
A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20070515 |
|
A711 | Notification of change in applicant |
Free format text: JAPANESE INTERMEDIATE CODE: A712 Effective date: 20081117 |
|
RD03 | Notification of appointment of power of attorney |
Free format text: JAPANESE INTERMEDIATE CODE: A7423 Effective date: 20081118 |
|
RD04 | Notification of resignation of power of attorney |
Free format text: JAPANESE INTERMEDIATE CODE: A7424 Effective date: 20081118 |
|
A521 | Written amendment |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20081215 |
|
A711 | Notification of change in applicant |
Free format text: JAPANESE INTERMEDIATE CODE: A711 Effective date: 20091105 |
|
RD03 | Notification of appointment of power of attorney |
Free format text: JAPANESE INTERMEDIATE CODE: A7423 Effective date: 20091105 |
|
RD04 | Notification of resignation of power of attorney |
Free format text: JAPANESE INTERMEDIATE CODE: A7424 Effective date: 20091105 |
|
TRDD | Decision of grant or rejection written | ||
A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20100406 |
|
A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 |
|
A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20100419 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20130514 Year of fee payment: 3 |
|
R150 | Certificate of patent or registration of utility model |
Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20130514 Year of fee payment: 3 |
|
S111 | Request for change of ownership or part of ownership |
Free format text: JAPANESE INTERMEDIATE CODE: R313111 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20130514 Year of fee payment: 3 |
|
R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
LAPS | Cancellation because of no payment of annual fees |