JP3055752B2 - Steering torque sensor - Google Patents
Steering torque sensorInfo
- Publication number
- JP3055752B2 JP3055752B2 JP6130363A JP13036394A JP3055752B2 JP 3055752 B2 JP3055752 B2 JP 3055752B2 JP 6130363 A JP6130363 A JP 6130363A JP 13036394 A JP13036394 A JP 13036394A JP 3055752 B2 JP3055752 B2 JP 3055752B2
- Authority
- JP
- Japan
- Prior art keywords
- core
- detection coil
- detection
- magnetic
- steering torque
- 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
Links
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- Power Steering Mechanism (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、ステアリングトルク検
出用センサのトルク検出変換構成部品を構成するコアの
材質を改良した操舵トルクセンサに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a steering torque sensor in which the material of a core constituting a torque detecting conversion component of a steering torque detecting sensor is improved.
【０００２】[0002]
【従来の技術】従来、図４に示すように、パワーステア
リング装置に用いられている操舵トルクセンサ１００に
おいては、入力軸（インプットシャフト）１０１と出力
軸（アウトプットシャフト）１０２が内部でトーション
バー１０３により連結され、ハウジング１０４に支持さ
れた２個の検出コイル１０５，１０６が入出力軸１０
１，１０２に係合している円筒状のコア１０７を囲むよ
うに配設されている。2. Description of the Related Art Conventionally, as shown in FIG. 4, in a steering torque sensor 100 used in a power steering apparatus, an input shaft (input shaft) 101 and an output shaft (output shaft) 102 are internally provided with a torsion bar 103. , And two detection coils 105 and 106 supported by the housing 104 are connected to the input / output shaft 10.
It is disposed so as to surround the cylindrical core 107 engaged with the first and second members 102.
【０００３】そこで、入力軸１０１に捩りトルクを与え
るとトーションバー１０３が弾性変形し、入力軸１０１
と出力軸１０２の間に回転方向の相対変位が生じる。ま
た、各軸１０１，１０２の外周に配設されているコア１
０７は、出力軸１０２の縦ガイド溝とコア１０７内側の
凸部が係合することにより、軸方向にのみ移動出来るよ
うに形成されている。更に、コア１０７のスパイラル溝
１０８に入力軸１０１に圧入されたスライダピン１０９
が係合している。When a torsional torque is applied to the input shaft 101, the torsion bar 103 is elastically deformed, and the input shaft 101
And the output shaft 102 generates a relative displacement in the rotational direction. Also, a core 1 disposed on the outer periphery of each shaft 101, 102
Reference numeral 07 is formed so that it can be moved only in the axial direction by engaging the vertical guide groove of the output shaft 102 with the protrusion inside the core 107. Further, the slider pin 109 press-fitted into the input shaft 101 into the spiral groove 108 of the core 107.
Are engaged.
【０００４】このような構造により、軸１０１，１０２
間の回転方向の変位は、コア１０７の軸方向の変位に変
換される。このコア１０７の変位によって検出コイル１
０５，１０６の周辺に磁気的変化を生じ、上下に配置し
た検出コイル１０５，１０６のインダクタンスＬ3，Ｌ4
が変化する。With such a structure, the shafts 101, 102
The displacement in the rotation direction between them is converted into the displacement of the core 107 in the axial direction. The displacement of the core 107 causes the detection coil 1
A magnetic change occurs in the vicinity of the detection coils 105 and 106, and the inductances L3 and L4 of the detection coils 105 and 106 arranged vertically.
Changes.
【０００５】ここで用いられているコア１０７は、磁性
材（ＳＣＭ材）で形成されたコア１０７ａの両端をリー
クカットリングと呼ばれるアルミリング１０７ｂで挟み
込むようにして構成されている。そして、コア１０７が
入力軸１０１側へ移動する場合には、コア１０７が近づ
く方の検出コイル１０５のインダクタンスＬ3が増加
し、コア１０７が遠ざかる方の検出コイル１０６のイン
ダクタンスＬ4が減少する。このインダクタンスの変化
を利用してトルク検出を行っている。The core 107 used here is configured such that both ends of a core 107a formed of a magnetic material (SCM material) are sandwiched between aluminum rings 107b called leak cut rings. When the core 107 moves toward the input shaft 101, the inductance L3 of the detection coil 105 closer to the core 107 increases, and the inductance L4 of the detection coil 106 closer to the core 107 decreases. Torque detection is performed using the change in inductance.
【０００６】[0006]
【発明が解決しようとする課題】従来の技術において
は、図４に示すように、コア１０７がＳＣＭ材製のコア
１０７ａと２個のアルミリング１０７ｂから構成されて
いるため、構造が複雑になるという問題点を有してい
た。また、アルミリング１０７ｂを取り除いてＳＣＭ材
製のコア１０７ａのみにすると、磁束がリークしてコア
１０７ａ以外の磁性体へ流れるためコア１０７ａの変位
に対する磁束変化が少なくなり、検出感度の低下につな
がってしまうという問題点を有していた。In the prior art, as shown in FIG. 4, since the core 107 is composed of a core 107a made of SCM material and two aluminum rings 107b, the structure becomes complicated. There was a problem that. Also, if the aluminum ring 107b is removed and only the core 107a made of the SCM material is used, the magnetic flux leaks and flows to a magnetic material other than the core 107a, so that a change in the magnetic flux with respect to the displacement of the core 107a is reduced, leading to a decrease in detection sensitivity. Had the problem that
【０００７】本発明は、従来の技術が有するこのような
問題点に鑑みてなされたものであり、その目的とすると
ころは、単一部品でコアを構成して構造の簡単化が図れ
ると共に、所望の検出感度を維持することが出来る操舵
トルクセンサを提供しようとするものである。The present invention has been made in view of the above-mentioned problems of the prior art, and has as its object to simplify the structure by forming a core with a single part, It is an object of the present invention to provide a steering torque sensor that can maintain a desired detection sensitivity.
【０００８】[0008]
【課題を解決するための手段】上記課題を解決すべく本
発明は、磁性材料により成る入力軸と出力軸間をトーシ
ョンバーで連結すると共に、前記入力軸及び出力軸に係
合するコアを設け、前記入出力軸間にトルクが作用する
と前記コアが変位し、前記コアの変位を検出コイルにて
電気的に検出するようにした操舵トルクセンサにおい
て、前記コアを、前記検出コイルに近づけた場合にこの
検出コイルへの磁気損失を増やし磁束を減少させる非磁
性金属材料のみにより構成したものである。SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a core which is connected to an input shaft and an output shaft made of a magnetic material by a torsion bar and is engaged with the input shaft and the output shaft. When a torque acts between the input and output shafts, the core is displaced, and in a steering torque sensor configured to electrically detect the displacement of the core with a detection coil, when the core is brought close to the detection coil. This
It is composed only of a non-magnetic metal material that increases the magnetic loss to the detection coil and reduces the magnetic flux .
【０００９】[0009]
【作用】コアを検出コイルに近づけた場合に、検出コイ
ルへの磁気損失が増えるので磁束が減少することを利用
して、トルクが作用した際のコアの変位を検出コイルに
て電気的に検出することで、トルクを検出する。コアを
非磁性金属材料のみにより構成したので、磁性材料によ
り成る入力軸と出力軸を囲むようにコアを配置した状態
においても、非磁性金属材料から成るコアに生じる渦電
流損などの磁気損失により磁束変化を生じさせ、検出コ
イルで囲まれた磁気回路の磁束変化を大きくすることが
出来る。[Function] When the core is brought close to the detection coil, the detection coil is
Utilizing the fact that magnetic flux decreases due to increased magnetic loss to
Then, the displacement of the core when torque acts is applied to the detection coil.
By electrically detecting the torque, the torque is detected. Since the core is made of only the non-magnetic metal material, even if the core is arranged so as to surround the input shaft and the output shaft made of the magnetic material, the core is made up of magnetic loss such as eddy current loss generated in the core made of the non-magnetic metal material. By causing a change in magnetic flux, the change in magnetic flux of the magnetic circuit surrounded by the detection coil can be increased.
【００１０】[0010]
【実施例】以下に本発明の実施例を添付図面に基づいて
説明する。ここで、図１は本発明に係る操舵トルクセン
サの断面図、図２は同じく作用説明図、図３は検出コイ
ルのインダクタンス変化を電気信号として出力する検出
回路の概要図である。Embodiments of the present invention will be described below with reference to the accompanying drawings. Here, FIG. 1 is a cross-sectional view of the steering torque sensor according to the present invention, FIG. 2 is an explanatory view of the operation, and FIG. 3 is a schematic diagram of a detection circuit that outputs a change in inductance of a detection coil as an electric signal.
【００１１】図１及び図３に示すように、操舵トルクセ
ンサ１は、２個の検出コイル２ａ，２ｂと、検出コイル
２ａ，２ｂを支持するハウジング３と、検出コイル２
ａ，２ｂに磁気的変化を与える非磁性金属材料のアルミ
材（Ａl材）から成るコア４と、磁気的変化による検出
コイル２ａ，２ｂのインダクタンス変化を電気信号とし
て出力する検出回路５などを備えている。As shown in FIGS. 1 and 3, the steering torque sensor 1 includes two detection coils 2a and 2b, a housing 3 supporting the detection coils 2a and 2b,
A core 4 made of a non-magnetic metal material (Al material) that gives a magnetic change to a and 2b, a detection circuit 5 that outputs a change in inductance of the detection coils 2a and 2b due to the magnetic change as an electric signal, and the like. ing.
【００１２】また、操舵トルクセンサ１においては、入
力軸６と出力軸７が内部においてトーションバー８で連
結されている。コア４は、出力軸７の縦ガイド溝とコア
４内側の凸部が係合することにより、軸６，７方向にの
み移動出来るように形成されている。更に、コア４のス
パイラル溝９に入力軸６に圧入されたスライダピン１０
が係合している。Further, in the steering torque sensor 1, the input shaft 6 and the output shaft 7 are connected by a torsion bar 8 inside. The core 4 is formed so that it can move only in the directions of the shafts 6 and 7 by engaging the vertical guide groove of the output shaft 7 with the convex portion inside the core 4. Further, the slider pin 10 press-fit into the input shaft 6 in the spiral groove 9 of the core 4.
Are engaged.
【００１３】ハウジング３は、アルミ材（Ａl材）で形
成され、検出コイル２ａ，２ｂを巻いたコイルボビン１
１をヨーク１２を介して支持すると共に、コア４と入出
力軸６，７を囲むように配設されいる。なお、１３は入
力軸６の回転速度をギア１４ａ，歯付ベルト１４ｂ，ギ
ア１４ｃを介して検出するタコジェネレータ、１５は入
力軸６とハウジング３との間に配設されたベアリング、
１６は出力軸７とハウジング３との間に配設されたベア
リング、１７はダストシール、１８はかしめリングであ
る。The housing 3 is made of an aluminum material (Al material) and has a coil bobbin 1 around which detection coils 2a and 2b are wound.
1 is supported via a yoke 12 and is arranged so as to surround the core 4 and the input / output shafts 6 and 7. Reference numeral 13 denotes a tacho generator for detecting the rotational speed of the input shaft 6 via the gear 14a, the toothed belt 14b, and the gear 14c. Reference numeral 15 denotes a bearing disposed between the input shaft 6 and the housing 3.
Reference numeral 16 denotes a bearing provided between the output shaft 7 and the housing 3, reference numeral 17 denotes a dust seal, and reference numeral 18 denotes a caulking ring.
【００１４】検出回路５は、図３に示すように、検出コ
イル２ａ，２ｂと基準抵抗２０ａ，２０ｂによりブリッ
ジ回路を構成している。そして、基準抵抗２０ａと基準
抵抗２０ｂの接続部２１を接地（ＧＮＤ）すると共に、
検出コイル２ａと検出コイル２ｂの接続部２２と、基準
抵抗２０ａと基準抵抗２０ｂの接続部２１との間に発振
回路２３によりパルス電圧ＶPを印加するようにしてい
る。As shown in FIG. 3, the detection circuit 5 forms a bridge circuit by the detection coils 2a and 2b and the reference resistors 20a and 20b. Then, the connection 21 between the reference resistors 20a and 20b is grounded (GND),
The pulse voltage VP is applied by the oscillation circuit 23 between the connection 22 between the detection coil 2a and the detection coil 2b and the connection 21 between the reference resistor 20a and the reference resistor 20b.
【００１５】また、検出コイル２ａと基準抵抗２０ａの
接続部、及び検出コイル２ｂと基準抵抗２０ｂの接続部
を夫々検出端子２４，２５とし、各検出端子２４，２５
はサンプルホールド回路２６，２７を介して差動電圧検
出手段２８に接続されている。The connection between the detection coil 2a and the reference resistor 20a and the connection between the detection coil 2b and the reference resistor 20b are defined as detection terminals 24 and 25, respectively.
Are connected to differential voltage detecting means 28 via sample and hold circuits 26 and 27.
【００１６】以上のように構成した操舵トルクセンサ１
の作用について説明する。入力軸６に捩りトルクを与え
るとトーションバー８が弾性変形し、入力軸６と出力軸
７の間に回転方向の相対変位が生じる。The steering torque sensor 1 configured as described above
The operation of will be described. When a torsional torque is applied to the input shaft 6, the torsion bar 8 is elastically deformed, and a relative displacement in the rotation direction occurs between the input shaft 6 and the output shaft 7.
【００１７】すると、各軸６，７の外周に嵌装されてい
るコア４は、出力軸７の縦ガイド溝とコア４内側の凸部
が係合状態にあることと、コア４のスパイラル溝９に入
力軸６に圧入されたスライダピン１０が係合状態にある
ことによって、軸６，７方向に移動する。Then, the core 4 fitted on the outer periphery of each of the shafts 6 and 7 has a state in which the vertical guide groove of the output shaft 7 and the convex portion inside the core 4 are in the engaged state, and the spiral groove of the core 4 When the slider pin 10 press-fitted into the input shaft 6 is in the engaged state, the slider 9 moves in the directions of the shafts 6 and 7.
【００１８】このようなコア４の変位が検出コイル２
ａ，２ｂの周辺に磁気的変化を招き、検出コイル２ａ，
２ｂのインダクタンスＬ1，Ｌ2は、一方が大きくなり、
他方が小さくなるように夫々変化する。The displacement of the core 4 is detected by the detection coil 2
A magnetic change is caused around the detection coils 2a, 2b.
One of the inductances L1 and L2 of 2b increases,
Each changes so that the other becomes smaller.
【００１９】例えば、図２（ａ）に示すように、アルミ
製のコア４が検出コイル２ａ，２ｂの中立位置に存在し
ている場合には、検出コイル２ａがコア４を囲む面積Ｓ
1と検出コイル２ｂがコア４を囲む面積Ｓ2が等しくなる
（Ｓ1＝Ｓ2）。すると、コア４による各検出コイル２
ａ，２ｂへの磁気損失が等しく、磁束が均等になる。従
って、検出コイル２ａのインダクタンスＬ1と検出コイ
ル２ｂのインダクタンスＬ2は等しくなる（Ｌ1＝Ｌ
2）。For example, as shown in FIG. 2A, when the aluminum core 4 is located at the neutral position of the detection coils 2a and 2b, the detection coil 2a has an area S surrounding the core 4.
1 and the area S2 surrounding the core 4 of the detection coil 2b become equal (S1 = S2). Then, each detection coil 2 by the core 4
The magnetic losses to a and 2b are equal, and the magnetic flux is equal. Therefore, the inductance L1 of the detection coil 2a is equal to the inductance L2 of the detection coil 2b (L1 = L
2).
【００２０】また、図２（ｂ）に示すように、アルミ製
のコア４が検出コイル２ｂにより近づいた場合には、検
出コイル２ａがコア４を囲む面積Ｓ1が減り、検出コイ
ル２ａへの磁気損失が減るので磁束が増加し、検出コイ
ル２ａのインダクタンスＬ1が増える。一方、検出コイ
ル２ｂがコア４を囲む面積Ｓ2が増え（Ｓ1＜Ｓ2）、検
出コイル２ｂへの磁気損失が増えるので磁束が減少し、
検出コイル２ｂのインダクタンスＬ2が減る。従って、
検出コイル２ａのインダクタンスＬ1の方が、検出コイ
ル２ｂのインダクタンスＬ2より大きくなる（Ｌ1＞Ｌ
2）。As shown in FIG. 2B, when the aluminum core 4 is closer to the detection coil 2b, the area S1 surrounding the core 4 of the detection coil 2a is reduced, and the magnetic force applied to the detection coil 2a is reduced. Since the loss is reduced, the magnetic flux increases, and the inductance L1 of the detection coil 2a increases. On the other hand, the area S2 of the detection coil 2b surrounding the core 4 increases (S1 <S2), and the magnetic loss to the detection coil 2b increases, so that the magnetic flux decreases.
The inductance L2 of the detection coil 2b decreases. Therefore,
The inductance L1 of the detection coil 2a is larger than the inductance L2 of the detection coil 2b (L1> L
2).
【００２１】また、アルミ製のコア４が検出コイル２ａ
により近づいた場合には、検出コイル２ｂがコア４を囲
む面積Ｓ2が減り、検出コイル２ｂへの磁気損失が減る
ので磁束が増加し、検出コイル２ｂのインダクタンスＬ
2が増える。一方、検出コイル２ａがコア４を囲む面積
Ｓ1が増え（Ｓ1＞Ｓ2）、検出コイル２ａへの磁気損失
が増えるので磁束が減少し、検出コイル２ａのインダク
タンスＬ1が減る。従って、検出コイル２ｂのインダク
タンスＬ2の方が、検出コイル２ａのインダクタンスＬ1
より大きくなる（Ｌ1＜Ｌ2）。The aluminum core 4 is used as the detection coil 2a.
, The area S2 surrounding the core 4 of the detection coil 2b decreases, and the magnetic loss to the detection coil 2b decreases, so that the magnetic flux increases, and the inductance L of the detection coil 2b decreases.
2 increases. On the other hand, the area S1 of the detection coil 2a surrounding the core 4 increases (S1> S2), and the magnetic loss to the detection coil 2a increases, so that the magnetic flux decreases and the inductance L1 of the detection coil 2a decreases. Therefore, the inductance L2 of the detection coil 2b is larger than the inductance L1 of the detection coil 2a.
It becomes larger (L1 <L2).
【００２２】このような検出コイル２ａ，２ｂのインダ
クタンスＬ1，Ｌ2を、図３に示す検出回路５によりトル
クとして検出する。The inductances L1 and L2 of the detection coils 2a and 2b are detected as torque by the detection circuit 5 shown in FIG.
【００２３】ブリッジ回路において、直列接続された検
出コイル２ａと基準抵抗２０ａ及び検出コイル２ｂと基
準抵抗２０ｂは、入力信号としてのパルス電圧ＶPに対
して夫々一次遅れ要素として作用する。In the bridge circuit, the detection coil 2a and the reference resistor 20a and the detection coil 2b and the reference resistor 20b, which are connected in series, each act as a primary delay element with respect to the pulse voltage VP as an input signal.
【００２４】そして、検出コイル２ａと検出コイル２ｂ
のインダクタンスＬ1，Ｌ2が異なることによって、各一
次遅れ要素の時定数が相違するため、検出端子２４と検
出端子２５の出力電圧（過渡応答電圧）に差が生じる。
これらの過渡応答電圧のうちボトム電圧における差電圧
を、サンプルホールド回路２６，２７を介して差動電圧
検出手段２８により検出電圧ＶOとして出力する。The detection coil 2a and the detection coil 2b
Are different, the time constants of the first-order lag elements are different, so that the output voltage (transient response voltage) of the detection terminal 24 and the detection terminal 25 is different.
Of these transient response voltages, the difference voltage at the bottom voltage is output as the detection voltage VO by the differential voltage detection means 28 via the sample and hold circuits 26 and 27.
【００２５】従って、捩りトルクに伴うコア４の変位で
検出コイル２ａ，２ｂのインダクタンスＬ1，Ｌ2を変化
させ、インダクタンスＬ1，Ｌ2の変化によるブリッジ回
路の出力電圧を差動電圧検出手段２８により検出し、検
出電圧ＶOをトルク値に換算することが出来る。Therefore, the inductances L1 and L2 of the detection coils 2a and 2b are changed by the displacement of the core 4 caused by the torsional torque, and the output voltage of the bridge circuit due to the change of the inductances L1 and L2 is detected by the differential voltage detection means 28. , The detected voltage VO can be converted into a torque value.
【００２６】[0026]
【発明の効果】以上説明したように本発明によれば、コ
アを、検出コイルに近づけた場合にこの検出コイルへの
磁気損失を増やし磁束を減少させる非磁性金属材料のみ
により構成、すなわち、コアを非磁性金属材料で且つ単
一部品により構成したので、構造の簡単化が図れると共
に、所望の検出感度も維持することが出来る。また、非
磁性金属材料でコアを形成するので、磁性金属材料でコ
アを機械加工する時に伴う磁気歪によるセンサ特性のば
らつきが低減出来る。その結果として、磁気歪を除去す
るための磁気焼鈍工程が不要となり工数低減に寄与する
ことが出来る。As described above, according to the present invention, when the core is brought close to the detection coil , the core is not connected to the detection coil.
Only non-magnetic metal materials that increase magnetic loss and reduce magnetic flux
In other words, since the core is formed of a non-magnetic metal material and a single component, the structure can be simplified and the desired detection sensitivity can be maintained. Further, since the core is formed of a non-magnetic metal material, variations in sensor characteristics due to magnetostriction caused when machining the core with a magnetic metal material can be reduced. As a result, a magnetic annealing step for removing magnetostriction becomes unnecessary, which can contribute to a reduction in man-hours.
【図１】本発明に係る操舵トルクセンサの断面図FIG. 1 is a sectional view of a steering torque sensor according to the present invention.
【図２】本発明に係る操舵トルクセンサの作用説明図FIG. 2 is a diagram illustrating the operation of the steering torque sensor according to the present invention.
【図３】検出コイルのインダクタンス変化を電気信号と
して出力する検出回路の概要図FIG. 3 is a schematic diagram of a detection circuit that outputs a change in inductance of a detection coil as an electric signal.
【図４】従来の操舵トルクセンサの断面図FIG. 4 is a sectional view of a conventional steering torque sensor.
１…操舵トルクセンサ、２ａ，２ｂ…検出コイル２ａ，
２ｂ、３…ハウジング、４…コア、５…検出回路、６…
入力軸、７…出力軸、８…トーションバー。1 ... steering torque sensor, 2a, 2b ... detection coil 2a,
2b, 3 ... housing, 4 ... core, 5 ... detection circuit, 6 ...
Input shaft, 7: output shaft, 8: torsion bar.
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 平３−200028（ＪＰ，Ａ) 特開 昭57−190240（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) G01L 3/10 B62D 5/04 G01L 5/22 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-3-200028 (JP, A) JP-A-57-190240 (JP, A) (58) Fields investigated (Int. Cl. 7 , DB name) G01L 3/10 B62D 5/04 G01L 5/22
Claims (1)
トーションバーで連結すると共に、前記入力軸及び出力
軸に係合するコアを設け、前記入出力軸間にトルクが作
用すると前記コアが変位し、前記コアの変位を検出コイ
ルにて電気的に検出するようにした操舵トルクセンサに
おいて、前記コアを、前記検出コイルに近づけた場合に
この検出コイルへの磁気損失を増やし磁束を減少させる
非磁性金属材料のみにより構成したことを特徴とする操
舵トルクセンサ。1. An input shaft made of a magnetic material and an output shaft are connected by a torsion bar, and a core engaged with the input shaft and the output shaft is provided. In a steering torque sensor that is displaced and electrically detects the displacement of the core with a detection coil, when the core is brought close to the detection coil,
A steering torque sensor comprising only a non-magnetic metal material for increasing the magnetic loss to the detection coil and reducing the magnetic flux .
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6130363A JP3055752B2 (en) | 1994-06-13 | 1994-06-13 | Steering torque sensor |
| US08/458,280 US5712563A (en) | 1994-06-13 | 1995-06-02 | Steering torque sensor utilizing a displacement detector having a pulse power supply |
| GB9511799A GB2290384B (en) | 1994-06-13 | 1995-06-09 | Displacement detector |
| DE19521531A DE19521531C2 (en) | 1994-06-13 | 1995-06-13 | Stroke detector and steering torque sensor using this |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6130363A JP3055752B2 (en) | 1994-06-13 | 1994-06-13 | Steering torque sensor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07333080A JPH07333080A (en) | 1995-12-22 |
| JP3055752B2 true JP3055752B2 (en) | 2000-06-26 |
Family
ID=15032592
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6130363A Expired - Lifetime JP3055752B2 (en) | 1994-06-13 | 1994-06-13 | Steering torque sensor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3055752B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012093679A1 (en) | 2011-01-07 | 2012-07-12 | 本田技研工業株式会社 | Electric power steering device |
| US8960363B2 (en) | 2010-02-25 | 2015-02-24 | Honda Motor Co., Ltd. | Electric power steering device |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000146722A (en) | 1998-09-01 | 2000-05-26 | Toyoda Mach Works Ltd | Torque sensor |
| JP2002013990A (en) * | 2000-06-30 | 2002-01-18 | Tokyo Shiyouketsu Kinzoku Kk | Magnetic core for non-contact type displacement sensor |
| JP5933998B2 (en) * | 2012-03-13 | 2016-06-15 | 本田技研工業株式会社 | Torque sensor |
-
1994
- 1994-06-13 JP JP6130363A patent/JP3055752B2/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8960363B2 (en) | 2010-02-25 | 2015-02-24 | Honda Motor Co., Ltd. | Electric power steering device |
| DE112011100682B4 (en) | 2010-02-25 | 2018-05-09 | Honda Motor Co., Ltd. | Electric power steering device |
| WO2012093679A1 (en) | 2011-01-07 | 2012-07-12 | 本田技研工業株式会社 | Electric power steering device |
| US9266559B2 (en) | 2011-01-07 | 2016-02-23 | Honda Motor Co., Ltd. | Electric power steering device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH07333080A (en) | 1995-12-22 |
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