JPH07209310A - Detector for rotational speed - Google Patents
Detector for rotational speedInfo
- Publication number
- JPH07209310A JPH07209310A JP423394A JP423394A JPH07209310A JP H07209310 A JPH07209310 A JP H07209310A JP 423394 A JP423394 A JP 423394A JP 423394 A JP423394 A JP 423394A JP H07209310 A JPH07209310 A JP H07209310A
- Authority
- JP
- Japan
- Prior art keywords
- rotation
- light
- holding member
- resin
- photoelectric converter
- 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
Landscapes
- Transmission And Conversion Of Sensor Element Output (AREA)
- Optical Transform (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、回転速度検出装置、詳
しくは、車両用車速センサ等、回転体の回転速度を検出
する回転速度検出装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotation speed detection device, and more particularly to a rotation speed detection device for detecting the rotation speed of a rotating body such as a vehicle speed sensor for vehicles.
【０００２】[0002]
【従来の技術】図３(A),(B) に示す回転速度検出装置
は、光電変換器８と、回転体（図示せず。）例えばトラ
ンスミッションの回転を伝達する回転伝達部材４と、光
電変換器８の光路を断続的に遮断する遮光回転部材７
と、回転伝達部材４と連結されるとともに遮光回転部材
７を保持する保持部材６とを備え、回転体の回転運動を
回転伝達部材４及び保持部材６を介して遮光回転部材７
に伝達し、遮光回転部材７が光電変換器８の光路を回転
体の回転速度に比例した周波数で断続的に遮断すること
により、光電変換器８から回転体の回転速度に比例した
周波数の電気信号を出力する構成をとっている。2. Description of the Related Art A rotation speed detecting device shown in FIGS. 3A and 3B includes a photoelectric converter 8, a rotating body (not shown), for example, a rotation transmitting member 4 for transmitting rotation of a transmission, and a photoelectric transmitting member. Light-blocking rotating member 7 that intermittently blocks the optical path of the converter 8.
And a holding member 6 that is connected to the rotation transmitting member 4 and holds the light shielding rotating member 7, and rotates the rotating body of the light shielding rotating member 7 via the rotation transmitting member 4 and the holding member 6.
And the light-blocking rotating member 7 intermittently interrupts the optical path of the photoelectric converter 8 at a frequency proportional to the rotation speed of the rotating body, so that the photoelectric converter 8 generates electricity of a frequency proportional to the rotating speed of the rotating body. It is configured to output a signal.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、上記従
来の回転速度検出装置は、回転伝達部材４と保持部材６
との連結を、保持部材６に形成された断面四角形状の凹
部６ａに、断面四角形状の回転伝達部材４の連結部４ｂ
を挿入することによって行なっているため、図４に示す
ように、回転伝達部材４の加減速回転により、連結部４
ｂと凹部６ａとの当接位置が図示実線で示す状態から図
示二点鎖線で示す状態までの間で変動し、保持部材６の
回転むらを招き、光電変換器８の出力信号が回転体の回
転を正確に示すものとはならないという問題がある。ま
た、保持部材６と遮光回転部材７との連結は、ワッシャ
１３を介在させて保持部材６をかしめることにより行な
われているため、そのための作業が必要となる問題があ
る。However, in the above-mentioned conventional rotation speed detecting device, the rotation transmitting member 4 and the holding member 6 are used.
And the connecting portion 4b of the rotation transmitting member 4 having a quadrangular cross section in the recess 6a having a quadrangular cross section formed in the holding member 6.
As shown in FIG. 4, since the rotation transmitting member 4 is accelerated / decelerated, the connecting portion 4 is inserted.
The contact position between b and the concave portion 6a fluctuates from the state shown by the solid line in the figure to the state shown by the chain double-dashed line in the figure, causing uneven rotation of the holding member 6 and the output signal of the photoelectric converter 8 from the rotating body. There is a problem that it does not indicate rotation accurately. Further, since the holding member 6 and the light-blocking rotating member 7 are connected by caulking the holding member 6 with the washer 13 interposed, there is a problem that a work therefor is required.
【０００４】また、上記従来の回転速度検出装置は、光
電変換器と電気的に接続されるターミナルをワイヤ１４
を介してコネクタ１２に電気的に接続しているため、部
品点数が多く、また配線作業を必要とする問題がある。In the conventional rotation speed detecting device, the terminal electrically connected to the photoelectric converter is connected to the wire 14.
Since it is electrically connected to the connector 12 via, there is a problem that the number of parts is large and wiring work is required.
【０００５】本発明は、これらの問題点に鑑みなされた
ものである。The present invention has been made in view of these problems.
【０００６】本発明の第１の目的は、保持部材の回転む
らを防止し、光電変換器の出力信号を回転体の回転を正
確に示す信号にするとともに、保持部材周辺の部品点数
の減少、かしめ作業の省略を図ることにある。A first object of the present invention is to prevent uneven rotation of the holding member, use an output signal of the photoelectric converter as a signal accurately indicating the rotation of the rotating body, and reduce the number of parts around the holding member. The purpose is to omit the caulking work.
【０００７】また、本発明の第２の目的は、電気系統の
部品点数の減少、配線作業の省略化を図ることにある。A second object of the present invention is to reduce the number of parts of the electric system and to omit the wiring work.
【０００８】[0008]
【課題を解決するための手段】上記第１の目的を達成す
るため、請求項１に係る回転速度検出装置は、発光手段
と、受光手段と、対象物の回転を伝達する回転伝達部材
と、前記発光手段と前記受光手段との間に配置され、前
記対象物の回転に応じて光を遮断する遮光回転部材と、
前記受光手段から前記対象物の回転に応じた信号を出力
する光電変換器と、前記回転伝達部材と連結されるとと
もに前記遮光回転部材を保持する保持部材と、を備え、
前記保持部材を、前記回転伝達部材の連結部と前記遮光
回転部材とをインサートして樹脂成形したことを特徴と
する。In order to achieve the first object, a rotation speed detecting device according to a first aspect of the present invention comprises a light emitting means, a light receiving means, and a rotation transmitting member for transmitting the rotation of an object. A light-blocking rotating member that is disposed between the light-emitting unit and the light-receiving unit and blocks light according to the rotation of the object;
A photoelectric conversion device that outputs a signal according to the rotation of the object from the light receiving unit, and a holding member that is connected to the rotation transmission member and holds the light shielding rotation member,
The holding member is resin-molded by inserting the connecting portion of the rotation transmitting member and the light shielding rotating member.
【０００９】また、上記第１、第２の目的を達成するた
め、請求項２に係る回転速度検出装置は、発光手段と、
受光手段と、対象物の回転を伝達する回転伝達部材と、
前記発光手段と前記受光手段との間に配置され、前記対
象物の回転に応じて光を遮断する遮光回転部材と、前記
受光手段から前記対象物の回転に応じた信号を出力する
光電変換器と、前記回転伝達部材と連結されるとともに
前記遮光回転部材を保持する保持部材と、を備え、前記
保持部材を、前記回転伝達部材の連結部と前記遮光回転
部材とをインサートして樹脂成形した構成とするととも
に、前記光電変換器と電気的に接続されるターミナル及
びコネクタを前記保持部材の収容ケースに一体形成した
ことを特徴とする。Further, in order to achieve the above first and second objects, a rotation speed detecting device according to a second aspect includes a light emitting means,
A light receiving means and a rotation transmitting member for transmitting the rotation of the object,
A light-blocking rotating member that is arranged between the light emitting unit and the light receiving unit and blocks light according to the rotation of the object, and a photoelectric converter that outputs a signal according to the rotation of the object from the light receiving unit. And a holding member that is connected to the rotation transmitting member and holds the light shielding rotating member, and the holding member is resin-molded by inserting the connecting portion of the rotation transmitting member and the light shielding rotating member. In addition to the above structure, the terminal and the connector electrically connected to the photoelectric converter are integrally formed in the housing case of the holding member.
【００１０】[0010]
【発明の作用効果】請求項１に係る回転速度検出装置
は、保持部材が回転伝達部材の連結部をインサートして
樹脂成形されているため、保持部材と回転伝達部材の連
結部との間でがたつきが発生せず、保持部材の回転むら
を防止でき、光電変換器の出力信号を回転体の回転を正
確に示す信号とすることができる。また、保持部材が遮
光回転部材をインサートして樹脂成形されているため、
ワッシャが不要となり部品点数の減少を図ることができ
るとともに、かしめ作業が不要になる効果を奏する。In the rotation speed detecting device according to the first aspect of the present invention, since the holding member is resin-molded by inserting the connecting portion of the rotation transmitting member, the holding member and the connecting portion of the rotation transmitting member are connected to each other. No rattling occurs, uneven rotation of the holding member can be prevented, and the output signal of the photoelectric converter can be a signal that accurately indicates the rotation of the rotating body. Further, since the holding member is resin-molded by inserting the light-blocking rotating member,
This eliminates the need for a washer and reduces the number of parts, and has the effect of eliminating the need for caulking work.
【００１１】また、請求項２に係る回転速度検出装置
は、請求項１に係る回転速度検出装置の構成に加え、光
電変換器と電気的に接続されるターミナル及びコネクタ
を保持部材の収容ケースに一体形成したため、請求項１
に係る回転速度検出装置の効果に加え、ワイヤ省略によ
る部品点数の減少、配線作業の省略化の効果を奏する。According to a second aspect of the present invention, in addition to the configuration of the first aspect of the rotational speed detecting device, a terminal and a connector electrically connected to the photoelectric converter are provided in a housing case of the holding member. Since it is integrally formed, claim 1
In addition to the effect of the rotation speed detecting device according to the present invention, the number of parts can be reduced by omitting the wire, and the wiring work can be omitted.
【００１２】[0012]
【実施例】以下、本発明の一実施例を図面に基づいて説
明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.
【００１３】図１(A),(B) 及び図２は、一実施例に係る
回転速度検出装置の構成を示し、図１(A) は同装置の平
面図、図１(B) は同装置の正面断面図、また、図２は、
図１(B) の一部の拡大断面図である。1 (A), 1 (B) and 2 show the configuration of a rotation speed detecting device according to one embodiment, FIG. 1 (A) is a plan view of the same device, and FIG. 1 (B) is the same. FIG. 2 is a front sectional view of the device, and FIG.
It is a partially expanded sectional view of FIG. 1 (B).
【００１４】図１(A),(B) 及び図２において、１は収容
ケースを表わしている。収容ケース１は、樹脂製ボディ
２と、このボディ２の開口部を覆う樹脂製カバー３とか
ら構成される。In FIGS. 1 (A), 1 (B) and FIG. 2, reference numeral 1 denotes a housing case. The housing case 1 includes a resin body 2 and a resin cover 3 that covers an opening of the body 2.
【００１５】ボディ２には、貫通孔２ａが形成されてお
り、この貫通孔２ａに、回転伝達部材（インナ）４、す
なわち、回転体例えばトランスミッション（図示せ
ず。）の回転を伝達する回転伝達部材４、の先端部４ａ
が通っている。ここで、回転伝達部材４は、複数本の鉄
線を撚って形成されている。A through hole 2a is formed in the body 2, and the rotation transmission member (inner) 4, that is, the rotation transmission for transmitting the rotation of a rotating body such as a transmission (not shown) is formed in the through hole 2a. Tip 4a of member 4
Is passing. Here, the rotation transmission member 4 is formed by twisting a plurality of iron wires.
【００１６】また、ボディ２には、圧入凹部（貫通孔２
ａの拡径部）２ｂが外側に形成されており、この圧入凹
部２ｂに、回転伝達部材４を覆う保護部材（アウタ）５
の先端部５ａが圧入固定されている。ここで、保護部材
５は、回転伝達部材４の周囲にクリアランスをもって配
された樹脂製チューブ５ｂと、このチューブ５ｂの外周
面に巻かれた鉄製半丸巻線５ｃ及び三角巻線５ｄと、こ
れらの巻線５ｃ，５ｄを覆う樹脂製被覆層５ｅとから構
成されている。The body 2 has a press-fitting recess (through hole 2).
2a is formed on the outside, and a protective member (outer) 5 that covers the rotation transmission member 4 is formed in the press-fitting recess 2b.
The front end portion 5a of the is fixed by press fitting. Here, the protective member 5 includes a resin tube 5b arranged around the rotation transmitting member 4 with a clearance, an iron semicircular winding 5c and a triangular winding 5d wound around the outer peripheral surface of the tube 5b, and And a resin coating layer 5e that covers the windings 5c and 5d.
【００１７】収容ケース１の内部には、樹脂製保持部材
６が収容されている。保持部材６は、回転伝達部材４の
小径の連結部４ｂと遮光回転部材（羽根車）７とをイン
サートして樹脂成形されてなる。遮光回転部材７は、円
板の円周部に、透光部（切欠部）７ａと遮光部７ｂとを
交互に等間隔で全体として８つ配し、中心部に、保持部
材６の成形時に樹脂材料を通す切欠部７ｃが形成されて
構成されている。遮光回転部材７の透光部７ａ及び遮光
部７ｂは、光電変換器８の光路を形成及び遮断するよう
配されている。光電変換器８は、発光手段８ａと受光手
段８ｂとを有し、カバー３の内周面側に熱かしめ等によ
り固着されている。光電変換器８は、回路基板９に電気
的に接続されている。回路基板９は、カバー３の内周面
から一体に突出した支持脚３ａ，３ａに熱かしめ等によ
り固着されている。回路基板９には、３本のターミナル
１０，１０，１０の各端部がはんだ１１，１１，１１で
固着されている。各ターミナル１０，１０，１０は、カ
バー３に一体に形成されたコネクタ１２と電気的に接続
されている。A resin holding member 6 is housed inside the housing case 1. The holding member 6 is made of resin by inserting the small diameter connecting portion 4b of the rotation transmitting member 4 and the light shielding rotating member (impeller) 7. The light-shielding rotation member 7 has a total of eight light-transmitting portions (notches) 7a and light-shielding portions 7b arranged alternately at equal intervals on the circumference of the disc, and has a central portion at the time of molding the holding member 6. A cutout portion 7c through which a resin material passes is formed. The light transmitting portion 7a and the light shielding portion 7b of the light shielding rotating member 7 are arranged so as to form and block the optical path of the photoelectric converter 8. The photoelectric converter 8 has a light emitting means 8a and a light receiving means 8b, and is fixed to the inner peripheral surface side of the cover 3 by heat staking or the like. The photoelectric converter 8 is electrically connected to the circuit board 9. The circuit board 9 is fixed to the support legs 3a, 3a integrally protruding from the inner peripheral surface of the cover 3 by heat staking or the like. On the circuit board 9, the respective ends of the three terminals 10, 10, 10 are fixed by solders 11, 11, 11. Each terminal 10, 10, 10 is electrically connected to a connector 12 formed integrally with the cover 3.
【００１８】上記構成の回転速度検出装置は、回転伝達
部材４の回転時、回転伝達部材４の連結部４ｂが保持部
材６に一体化されているため、保持部材６は回転伝達部
材４と一体となって回転する。このため、従来装置のよ
うな保持部材６の回転むらを防止することができ、光電
変換器８の出力信号が、回転体の回転を正確に示すもの
となる。また、遮光回転部材７をインサートして保持部
材６を樹脂成形しているため、従来装置のように遮光回
転部材７を保持部材６に取り付ける作業が不要になると
ともに、ワッシャ１３が不要となり部品点数を減少させ
ることができる。In the rotation speed detecting device having the above-mentioned structure, since the connecting portion 4b of the rotation transmitting member 4 is integrated with the holding member 6 when the rotation transmitting member 4 rotates, the holding member 6 is integrated with the rotation transmitting member 4. And rotate. Therefore, it is possible to prevent the rotation unevenness of the holding member 6 as in the conventional device, and the output signal of the photoelectric converter 8 accurately indicates the rotation of the rotating body. Further, since the light-shielding rotating member 7 is inserted and the holding member 6 is resin-molded, the work of attaching the light-shielding rotating member 7 to the holding member 6 as in the conventional device is not necessary, and the washer 13 is not necessary. Can be reduced.
【００１９】また、ターミナル１０とコネクタ１２とを
直接接続し、かつ、保持部材６のカバー３に一体形成し
たため、従来装置のワイヤ１４の省略により部品点数の
減少、配線作業の省略化を図ることができる。Further, since the terminal 10 and the connector 12 are directly connected and integrally formed on the cover 3 of the holding member 6, the number of parts and the wiring work can be reduced by omitting the wire 14 of the conventional device. You can
【図１】一実施例に係る回転速度検出装置の構成を示
し、図１(A) は同装置の平面図、図１(B) は同装置の正
面断面図1A and 1B show a configuration of a rotation speed detecting device according to an embodiment, FIG. 1A is a plan view of the device, and FIG. 1B is a front sectional view of the device.
【図２】図１(B) の一部の拡大断面図FIG. 2 is an enlarged sectional view of a part of FIG. 1 (B).
【図３】従来装置の構成を示し、図３(A) は同装置の平
面図、図３(B) は同装置の正面断面図FIG. 3 shows a configuration of a conventional device, FIG. 3 (A) is a plan view of the device, and FIG. 3 (B) is a front sectional view of the device.
【図４】従来装置の問題点を示す断面図FIG. 4 is a sectional view showing a problem of the conventional device.
１ 収容ケース ４ 回転伝達部材 ４ｂ 連結部 ６ 保持部材 ７ 遮光回転部材 ８ 光電変換器 ８ａ 発光手段 ８ｂ 受光手段 １０ ターミナル １２ コネクタ DESCRIPTION OF SYMBOLS 1 Housing case 4 Rotation transmission member 4b Connection part 6 Holding member 7 Light shielding rotation member 8 Photoelectric converter 8a Light emitting means 8b Light receiving means 10 Terminal 12 Connector
Claims (2)
象物の回転に応じて光を遮断する遮光回転部材と、 前記受光手段から前記対象物の回転に応じた信号を出力
する光電変換器と、 前記回転伝達部材と連結されるとともに前記遮光回転部
材を保持する保持部材と、 を備え、 前記保持部材を、前記回転伝達部材の連結部と前記遮光
回転部材とをインサートして樹脂成形したことを特徴と
する回転速度検出装置。1. A light emitting means, a light receiving means, a rotation transmitting member for transmitting the rotation of an object, a rotation transmitting member arranged between the light emitting means and the light receiving means, and blocking light according to the rotation of the object. A light-blocking rotating member, a photoelectric converter that outputs a signal according to the rotation of the object from the light-receiving unit, and a holding member that is connected to the rotation transmitting member and holds the light-blocking rotating member, A rotation speed detecting device, wherein the holding member is resin-molded by inserting the connecting portion of the rotation transmitting member and the light shielding rotating member.
ネクタを前記保持部材の収容ケースに一体形成したこと
を特徴とする回転速度検出装置。2. The rotation speed detecting device according to claim 1, wherein a terminal and a connector electrically connected to the photoelectric converter are integrally formed in a housing case of the holding member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP423394A JPH07209310A (en) | 1994-01-19 | 1994-01-19 | Detector for rotational speed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP423394A JPH07209310A (en) | 1994-01-19 | 1994-01-19 | Detector for rotational speed |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH07209310A true JPH07209310A (en) | 1995-08-11 |
Family
ID=11578850
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP423394A Pending JPH07209310A (en) | 1994-01-19 | 1994-01-19 | Detector for rotational speed |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07209310A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016114590A (en) * | 2014-12-12 | 2016-06-23 | 日本精工株式会社 | Sensor and manufacturing method of the same |
| WO2017022260A1 (en) * | 2014-12-12 | 2017-02-09 | 日本精工株式会社 | Method for manufacturing sensor, and sensor |
| CN107850461A (en) * | 2015-08-03 | 2018-03-27 | 日本精工株式会社 | The manufacture method and sensor of sensor |
-
1994
- 1994-01-19 JP JP423394A patent/JPH07209310A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016114590A (en) * | 2014-12-12 | 2016-06-23 | 日本精工株式会社 | Sensor and manufacturing method of the same |
| WO2017022260A1 (en) * | 2014-12-12 | 2017-02-09 | 日本精工株式会社 | Method for manufacturing sensor, and sensor |
| US10458817B2 (en) | 2014-12-12 | 2019-10-29 | Nsk Ltd. | Sensor manufacturing method and sensor |
| CN107850461A (en) * | 2015-08-03 | 2018-03-27 | 日本精工株式会社 | The manufacture method and sensor of sensor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7337679B2 (en) | Rotation sensor | |
| US6868744B2 (en) | Magnetic torque sensor including integral sub-unit | |
| EP0793101B1 (en) | Rotation detector | |
| US6291914B1 (en) | Rotational angle sensor | |
| KR100315833B1 (en) | Magnetic rotational speed sensor | |
| KR970022319A (en) | Rotation sensor and its manufacturing method | |
| US6271515B1 (en) | Column switch for vehicles includes a flexible cable | |
| JPH07209310A (en) | Detector for rotational speed | |
| CN116558554A (en) | Magnetic detection sensor, rotation detection sensor, and sensor-attached cable | |
| US6703826B2 (en) | Rotation detector having improved vibration characteristics | |
| EP0551539B1 (en) | Rotation speed sensor | |
| JPH11356025A (en) | Vacuum motor structure | |
| JP3536069B2 (en) | Encoder | |
| US5628570A (en) | Wheel-supporting bearing | |
| JP4626739B2 (en) | Wire protection device used in automatic transmission and its mounting method | |
| JP3530289B2 (en) | Bicycle generator | |
| JP2002221529A (en) | Rotation sensor and its assembly method | |
| JP2001033468A (en) | Rotation-detecting device | |
| MXPA02007565A (en) | Wheel speed sensor. | |
| JPH11287610A (en) | Structure of steering sensor | |
| JPH09138240A (en) | Detection apparatus for rotational speed | |
| US6677746B2 (en) | Wheel speed sensor for a vehicle which has a function of preventing a coil open circuit | |
| JP3724089B2 (en) | Rotary encoder | |
| KR970068098A (en) | Electromotor | |
| JPH0753409Y2 (en) | Cable drawer structure |