JPH09126916A - Torque detector - Google Patents
Torque detectorInfo
- Publication number
- JPH09126916A JPH09126916A JP31943695A JP31943695A JPH09126916A JP H09126916 A JPH09126916 A JP H09126916A JP 31943695 A JP31943695 A JP 31943695A JP 31943695 A JP31943695 A JP 31943695A JP H09126916 A JPH09126916 A JP H09126916A
- Authority
- JP
- Japan
- Prior art keywords
- torque
- magnet
- torsion
- torsion bar
- coil spring
- 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.)
- Granted
Links
Landscapes
- Power Steering Mechanism (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は、動力伝達軸等のトル
クを測定するトルク検出器に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a torque detector for measuring a torque of a power transmission shaft or the like.
【０００２】[0002]
【従来の技術】トルク検出には、軸のねじれ角を歪ゲー
ジによる抵抗の変化や磁気の変化、光量の変化に置換し
て検出する方式等があり、トルク検出器として市販され
ている。2. Description of the Related Art Torque detection includes a method in which a torsion angle of a shaft is replaced with a change in resistance, a change in magnetism, or a change in light amount by a strain gauge, and the like, and is commercially available as a torque detector.
【０００３】[0003]
【発明が解決しようとする課題】当社も長年にわたりト
ルク検出器の専門メーカーとして、公開特許広報（昭５
５−１５９１３０）でも詳述しているように、トルク平
衡用コイルスプリングのトルクに比例したねじれ角を磁
気検出素子にて検出する方式を用いたトルク検出器を開
発販売してきた。本方式では、ブラシやコイルスプリン
グを用いているため、高速回転にむかなかったりブラシ
交換のメンテナンスを必要とした。[Problems to be Solved by the Invention] We have been a specialist manufacturer of torque detectors for many years,
As described in detail in Japanese Unexamined Patent Application Publication No. 5-159130, a torque detector using a method of detecting a torsion angle proportional to the torque of a torque spring for torque equilibration by a magnetic detection element has been developed and sold. In this method, since a brush or a coil spring is used, it was not possible to achieve high-speed rotation or maintenance of brush replacement was required.
【０００４】[0004]
【課題を解決するための手段】この発明は、上述不都合
を除去するために発明したもので、外周部に磁石を固着
した磁石ホルダーをトーションバーに設け、磁石と相対
する部位に、磁気検出素子を設ける構造にした。The present invention was devised to eliminate the above-mentioned inconvenience, and a magnet holder having a magnet fixed to the outer periphery thereof is provided on a torsion bar, and a magnetic detecting element is provided at a portion facing the magnet. The structure is provided.
【０００５】[0005]
【作用】上述の如く発明したことにより、トルクに比例
したトーションバーのねじれ角を、直接磁気検出素子で
検出することにより、コイルスプリングやスリップリン
グを使用しなくてもトルク測定ができる。According to the invention as described above, the torque can be measured without using a coil spring or a slip ring by directly detecting the torsion angle of the torsion bar in proportion to the torque by the magnetic detecting element.
【０００６】[0006]
【実施例】以下図面に基づいてこの発明の実施例を詳細
に説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below in detail with reference to the drawings.
【０００７】図１〜図２は、この発明の実施例を示すも
のである。図１はトルク検出器の断面図を示し、図２は
磁石と磁気検出素子の形状の１事例を示している。FIGS. 1 and 2 show an embodiment of the present invention. FIG. 1 shows a sectional view of a torque detector, and FIG. 2 shows one example of the shapes of a magnet and a magnetic detection element.
【０００８】本実施例は図１の如く、磁石５−１，５−
２を外周部に固着した磁石ホルダー１−１，１−２をト
ーションバー３に固嵌し、ケーシング２の磁石５−１，
５−２と相対する部位に磁気検出素子４−１，４−２を
配設している。図２は磁気検出素子４−１，４−２及び
磁石５−１，５−２の形状の１事例を示す正面図で、磁
気検出素子４−１，４−２のリード線６，７は、図示を
省略したブリッジ回路等に接続される。In this embodiment, as shown in FIG. 1, magnets 5-1 and 5- are used.
The magnet holders 1-1 and 1-2 in which 2 is fixed to the outer peripheral portion are fixedly fitted to the torsion bar 3, and the magnets 5-1 and 5-1 of the casing 2 are attached.
The magnetic detection elements 4-1 and 4-2 are arranged in a portion facing 5-2. FIG. 2 is a front view showing an example of the shapes of the magnetic detection elements 4-1 and 4-2 and the magnets 5-1 and 5-2. The lead wires 6 and 7 of the magnetic detection elements 4-1 and 4-2 are , Is connected to a bridge circuit or the like (not shown).
【０００９】磁石５−１の角度変位による磁気検出素子
４−１の出力及び磁石５−２の角度変位による磁気検出
素子４−２の出力を、トーションバー３にねじれが生じ
ていない状態で同じ値になるよう製作することにより、
任意の回転位置での各々の出力の差を一定にすることが
可能である。トーションバー３にトルクに比例したねじ
れが発生するとねじれ角度分のずれが生じ磁気検出素子
４−１，４−２の出力の差にも変化が生じる。出力の差
の変化がねじれ角に比例するリニアな領域を利用するこ
とによりトルクを測定することができる。The output of the magnetic detecting element 4-1 due to the angular displacement of the magnet 5-1 and the output of the magnetic detecting element 4-2 due to the angular displacement of the magnet 5-2 are the same in a state where the torsion bar 3 is not twisted. By manufacturing to value
It is possible to make the difference between the outputs at any rotational position constant. When the torsion bar 3 is twisted in proportion to the torque, a shift corresponding to the twist angle occurs, and the difference between the outputs of the magnetic detection elements 4-1 and 4-2 also changes. The torque can be measured by using a linear region in which the change in the output difference is proportional to the torsion angle.
【００１０】[0010]
【発明の効果】以上実施例で説明した如く、トルク平衡
用のコイルスプリングやスリップリングを使用しないで
トルク検出することにより構造が極めて簡素化でき小型
化できる。又、コイルスプリングが遠心力でふくらむこ
とによるトルクの変動や、スリップリングを使用するこ
とによるブラシ交換等のメンテナンスも無くすることが
可能である。As described in the above embodiments, the structure can be extremely simplified and downsized by detecting torque without using a coil spring or slip ring for torque balancing. It is also possible to eliminate torque fluctuations caused by the coil spring bulging due to centrifugal force and maintenance such as brush replacement due to the use of a slip ring.
【図１】この発明の実施例を示すトルク検出器の断面図
である。FIG. 1 is a sectional view of a torque detector showing an embodiment of the present invention.
【図２】磁気検出素子と磁石の形状の正面図である。FIG. 2 is a front view of the shapes of a magnetic detection element and a magnet.
１−１，１−２ 磁石ホルダー ２ ケーシング ３ トーションバー ４−１，４−２ 磁気検出素子 ５−１，５−２ 磁石 ６，７ リード線 1-1, 1-2 Magnet holder 2 Casing 3 Torsion bar 4-1, 4-2 Magnetic detection element 5-1, 5-2 Magnet 6, 7 Lead wire
Claims (1)
トーションバーに設け、磁石と相対する部位に磁気検出
素子を設けてなるトルク検出器。1. A torque detector comprising a torsion bar provided with a magnet holder having a magnet fixed to the outer periphery thereof, and a magnetic detection element provided at a portion facing the magnet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7319436A JP2829847B2 (en) | 1995-10-31 | 1995-10-31 | Torque detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7319436A JP2829847B2 (en) | 1995-10-31 | 1995-10-31 | Torque detector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH09126916A true JPH09126916A (en) | 1997-05-16 |
| JP2829847B2 JP2829847B2 (en) | 1998-12-02 |
Family
ID=18110182
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7319436A Expired - Fee Related JP2829847B2 (en) | 1995-10-31 | 1995-10-31 | Torque detector |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2829847B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19757008A1 (en) * | 1997-12-20 | 1999-06-24 | Bosch Gmbh Robert | Sensor for detecting angular variations, e.g. for automobile steering wheel shaft |
| JP2004514901A (en) * | 2000-11-29 | 2004-05-20 | キャスコ プロダクツ コーポレイション | Webbing tension sensor |
| CN106969863A (en) * | 2017-05-19 | 2017-07-21 | 重庆望江工业有限公司 | A kind of fixing device on helical spring torque detecting apparatus |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101849259B1 (en) * | 2017-02-23 | 2018-04-16 | 주식회사 노아 엑츄에이션 | Torque sensing apparatus and method of electric power actuater with auto setting means |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5451573A (en) * | 1977-09-29 | 1979-04-23 | Yaskawa Denki Seisakusho Kk | Multiicoil torque meter |
| JPS57169641A (en) * | 1981-04-14 | 1982-10-19 | Aisin Seiki Co Ltd | Torque sensor |
| JPH04256508A (en) * | 1991-02-06 | 1992-09-11 | Nippon Pneumatic Mfg Co Ltd | Detecting method for cutting torque and device in drilling machine |
| JPH05196520A (en) * | 1992-01-20 | 1993-08-06 | Jatco Corp | Phase difference type torque detector |
-
1995
- 1995-10-31 JP JP7319436A patent/JP2829847B2/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5451573A (en) * | 1977-09-29 | 1979-04-23 | Yaskawa Denki Seisakusho Kk | Multiicoil torque meter |
| JPS57169641A (en) * | 1981-04-14 | 1982-10-19 | Aisin Seiki Co Ltd | Torque sensor |
| JPH04256508A (en) * | 1991-02-06 | 1992-09-11 | Nippon Pneumatic Mfg Co Ltd | Detecting method for cutting torque and device in drilling machine |
| JPH05196520A (en) * | 1992-01-20 | 1993-08-06 | Jatco Corp | Phase difference type torque detector |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19757008A1 (en) * | 1997-12-20 | 1999-06-24 | Bosch Gmbh Robert | Sensor for detecting angular variations, e.g. for automobile steering wheel shaft |
| JP2004514901A (en) * | 2000-11-29 | 2004-05-20 | キャスコ プロダクツ コーポレイション | Webbing tension sensor |
| JP4932126B2 (en) * | 2000-11-29 | 2012-05-16 | キャスコ プロダクツ コーポレイション | Webbing tension sensor |
| CN106969863A (en) * | 2017-05-19 | 2017-07-21 | 重庆望江工业有限公司 | A kind of fixing device on helical spring torque detecting apparatus |
| CN106969863B (en) * | 2017-05-19 | 2023-02-21 | 重庆望江工业有限公司 | Fixing device on spiral spring torque detection equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2829847B2 (en) | 1998-12-02 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| LAPS | Cancellation because of no payment of annual fees |