JP2009139124A - Pulsar ring for magnetic encoders - Google Patents

Pulsar ring for magnetic encoders Download PDF

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JP2009139124A
JP2009139124A JP2007313245A JP2007313245A JP2009139124A JP 2009139124 A JP2009139124 A JP 2009139124A JP 2007313245 A JP2007313245 A JP 2007313245A JP 2007313245 A JP2007313245 A JP 2007313245A JP 2009139124 A JP2009139124 A JP 2009139124A
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mass
holder
stainless steel
pulsar
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JP5035541B2 (en
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Naoto Kobayashi
直人 小林
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Nok Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To obtain a magnetic field required for detecting rotation with high accuracy by a magnetic sensor and excellent corrosion resistance. <P>SOLUTION: A ring shaped holder 11 being attached to the outer circumference of a rotating member and rotating with this rotating member, and a pulsar body 12 bonded to the holder 11 integrally, which is molded with rubber like elastic material mixed with magnetic powder and multipolarly magnetized are provided, wherein the holder 11 consists of a ferritic stainless steel plate containing 20.5-22.0% by mass of Cr, 0.3-0.6% by mass of Cu and 0.1-0.35% by mass of Ti. The holder 11 consisting of the stainless steel plate has a magnetism, and a corrosion resistance equivalent to SUS304. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は、磁気エンコーダ用パルサーリングに関し、特に、磁性体金属からなる回転体に、磁性粉末を混合したゴム状弾性材料の成形体を接合して多極着磁した構造を備えるものに関する。   The present invention relates to a pulsar ring for a magnetic encoder, and more particularly to a pulsar ring having a structure in which a molded body of a rubber-like elastic material mixed with magnetic powder is joined to a rotating body made of a magnetic metal and multipolarized.

図2は、自動車用車輪懸架装置の軸受部を密封する密封装置に一体に設けられた従来の磁気エンコーダを、軸心Oを通る平面で切断して示す装着状態の断面図である。この図2において、参照符号100は密封装置で、軸受200の外輪201と内輪202の端部間に組み込まれて、軸受外部から軸受内部への泥水等の侵入を防止するものである。   FIG. 2 is a cross-sectional view of a mounting state in which a conventional magnetic encoder provided integrally with a sealing device for sealing a bearing portion of a wheel suspension device for an automobile is cut along a plane passing through an axis O. In FIG. 2, reference numeral 100 is a sealing device, which is incorporated between the outer ring 201 of the bearing 200 and the end of the inner ring 202 to prevent intrusion of muddy water or the like from the outside of the bearing into the inside of the bearing.

詳しくは、この密封装置100は、軸受200の外輪201の内周面に圧入嵌着される金属製の取付環101と、この取付環101にゴム状弾性材料で一体的に設けられたスラストリップ102及びラジアルリップ103と、内輪202の外周面に密嵌されたスリンガ104とを備え、スラストリップ102の先端が、スリンガ104のフランジ104aの内側面に摺動可能に密接されると共に、その内周側のラジアルリップ103の先端の内周縁が、スリンガ104のスリーブ部104bの外周面に摺動可能に密接されている。   Specifically, the sealing device 100 includes a metal mounting ring 101 that is press-fitted to the inner peripheral surface of the outer ring 201 of the bearing 200, and a thrust strip that is integrally provided on the mounting ring 101 with a rubber-like elastic material. 102 and a radial lip 103, and a slinger 104 tightly fitted to the outer peripheral surface of the inner ring 202, the tip of the thrust strip 102 is slidably in close contact with the inner surface of the flange 104a of the slinger 104, The inner peripheral edge of the distal end of the radial radial lip 103 is in close contact with the outer peripheral surface of the sleeve portion 104b of the slinger 104 so as to be slidable.

スリンガ104のフランジ104aの外側面には、ゴム状弾性材料に磁性体を混合した磁性ゴムで円盤状に成形されると共に円周方向所定ピッチで多極着磁されたパルサー本体105が一体的に設けられ、このパルサー本体105とスリンガ104とによってパルサーリング110が構成されている。すなわち、スリンガ104は、密封装置100を構成する回転側の密封要素であると共に、パルサーリング110におけるパルサー本体105を一体に支持するホルダを兼ねるものである。また、パルサーリング110の外側には、磁気センサ120が非回転状態で対向配置されており、この磁気センサ120は、パルサーリング110と共に磁気エンコーダを構成するものであって、パルサーリング110が軸受200の内輪202と一体的に回転することによる磁界の変化に対応した波形のパルス信号を発生し、回転を検出するものである。   On the outer surface of the flange 104a of the slinger 104, there is integrally formed a pulsar body 105 which is molded into a disc shape with a magnetic rubber obtained by mixing a rubber-like elastic material with a magnetic material and is multipolarly magnetized at a predetermined pitch in the circumferential direction. The pulsar ring 110 is configured by the pulsar main body 105 and the slinger 104. That is, the slinger 104 serves as a rotary-side sealing element that constitutes the sealing device 100 and also serves as a holder that integrally supports the pulsar body 105 in the pulsar ring 110. In addition, a magnetic sensor 120 is opposed to the outside of the pulsar ring 110 in a non-rotating state. The magnetic sensor 120 constitutes a magnetic encoder together with the pulsar ring 110, and the pulsar ring 110 is a bearing 200. A pulse signal having a waveform corresponding to a change in the magnetic field caused by rotating integrally with the inner ring 202 is generated to detect the rotation.

しかしながら、この種のパルサーリング110は、スリンガ104として比較的安価で磁性を有するフェライト系のステンレス鋼であるSUS430が用いられており、このSUS430はSUS304に比較すると耐食性に劣るため、雨の多い地域や海に近い地域などでは、泥水等に曝されることによってスリンガ104に錆が発生してパルサー本体105の剥離等を生じやすくなるという問題があった。   However, in this type of pulsar ring 110, SUS430, which is a relatively inexpensive and magnetic ferritic stainless steel, is used as the slinger 104. Since this SUS430 is inferior in corrosion resistance compared to SUS304, it is a region with a lot of rain. In areas close to the sea or the like, there is a problem that rusting occurs on the slinger 104 due to exposure to muddy water or the like, and peeling of the pulsar body 105 is likely to occur.

このため、スリンガ104の耐食性を向上させる場合は、SUS304を使用することが有効であるが、このSUS304はオーステナイト系のステンレス鋼で非磁性であるため、磁気センサ120で検出するのに必要な強い磁界が得られにくく、磁気エンコーダ用パルサーリング110として機能的に適していない。しかもSUS430に比較すると深絞り等の加工性が悪く、高価なNiやMoを含有しているので材料コストが高くなるといった問題が指摘されている。   For this reason, in order to improve the corrosion resistance of the slinger 104, it is effective to use SUS304. However, since SUS304 is austenitic stainless steel and non-magnetic, it is necessary to be detected by the magnetic sensor 120. It is difficult to obtain a magnetic field and is not functionally suitable as the pulsar ring 110 for a magnetic encoder. Moreover, it has been pointed out that the workability such as deep drawing is worse than that of SUS430, and the material cost is high because it contains expensive Ni and Mo.

そこで、スリンガ104を、C:0.025%以下,Si:1%以下,Mn:1%以下,P:0.04%以下,S:0.01%以下,Ni:0.6%以下,Cr:19〜21%,Cu:0.3〜0.6%,Nb:10×(C+N)%以上を含有するフェライト系ステンレスで製作することによって、耐食性の向上を図ると共に、磁性を確保したものが開発された(特許文献1参照)。
特開2001−255337号公報
Therefore, the slinger 104 is C: 0.025% or less, Si: 1% or less, Mn: 1% or less, P: 0.04% or less, S: 0.01% or less, Ni: 0.6% or less, Cr: 19-21%, Cu : Ferritic stainless steel containing 0.3 to 0.6%, Nb: 10 × (C + N)% or more was developed to improve corrosion resistance and ensure magnetism (see Patent Document 1).
JP 2001-255337 A

しかしながら、特許文献1に記載された材質のステンレス鋼板は、SUS430よりは優れた耐食性を示すが、SUS304には及ばず、したがって要求される耐食性を満足し得るものではなかった。   However, the stainless steel plate made of the material described in Patent Document 1 exhibits corrosion resistance superior to that of SUS430, but does not reach SUS304, and thus cannot satisfy the required corrosion resistance.

本発明は、以上のような点に鑑みてなされたものであって、その技術的課題とするところは、磁気センサによって回転を高精度で検出するための所要の強さの磁界と、優れた耐食性を確保することにある。   The present invention has been made in view of the above points, and the technical problem is that a magnetic field having a required strength for detecting rotation with high accuracy by a magnetic sensor and an excellent It is to ensure corrosion resistance.

上述した技術的課題を有効に解決するための手段として、請求項1の発明に係る磁気エンコーダ用パルサーリングは、回転側部材の外周に取り付けられる環状のホルダと、磁性粉末を混合したゴム状弾性材料で成形されて多極着磁され前記ホルダに一体的に接合されたパルサー本体とからなり、前記ホルダが、Crを20.5〜22.0mass%、Cuを0.3〜0.6mass%、Tiを0.1〜0.35mass%含有するフェライト系ステンレス鋼板からなるものである。   As means for effectively solving the above technical problem, a pulsar ring for a magnetic encoder according to the invention of claim 1 is a rubber-like elastic material in which an annular holder attached to the outer periphery of a rotary member and magnetic powder are mixed. It consists of a pulsar body that is molded with material, multipolar magnetized, and integrally joined to the holder. The holder comprises 20.5 to 22.0 mass% of Cr, 0.3 to 0.6 mass% of Cu, and 0.1 to 0.35 of Ti. It consists of a ferritic stainless steel plate containing mass%.

上記構成において、ホルダはフェライト系ステンレス鋼板からなるため、磁性を有するものであり、磁性粉末を混合したゴム状弾性材料からなるパルサー本体に着磁された磁界による磁気回路が形成される。このため、SUS430を用いた場合と同様、磁気センサによる回転検出に必要な強い磁界が得られる。   In the above configuration, since the holder is made of a ferritic stainless steel plate, it has magnetism, and a magnetic circuit is formed by a magnetic field magnetized on a pulsar body made of a rubber-like elastic material mixed with magnetic powder. For this reason, the strong magnetic field required for the rotation detection by a magnetic sensor is obtained like the case where SUS430 is used.

また、一般にステンレス鋼板は、表面にCr密度の高い酸化皮膜(不働態皮膜)が形成されることによって耐食性を奏するものであるが、本発明におけるホルダを形成しているフェライト系ステンレス鋼板は、Cr、Cu、及びTiの成分量によって、NiやMoを含有していなくてもSUS304とほぼ同等の耐食性を確保すると共に、優れた加工性を確保しているものである。   In general, a stainless steel sheet exhibits corrosion resistance by forming an oxide film (passive film) with a high Cr density on the surface. However, the ferritic stainless steel sheet forming the holder in the present invention is made of Cr. Depending on the component amounts of Cu, Ti and Ti, even if Ni or Mo is not contained, corrosion resistance substantially equivalent to that of SUS304 is ensured and excellent workability is ensured.

詳しくは、フェライト系ステンレス鋼板に含まれるCrは、耐食性を向上させるものであり、20.5mass%以上の含有によって、SUS304と同等の耐食性を得ることができるが、含有量が22.0mass%を超えると熱延板の靭性が低下して製造性が悪化するので、Crの含有量は20.5〜22.0mass%とした。   Specifically, Cr contained in the ferritic stainless steel sheet improves corrosion resistance, and by containing 20.5 mass% or more, corrosion resistance equivalent to SUS304 can be obtained, but when the content exceeds 22.0 mass% Since the toughness of the hot-rolled sheet decreases and the manufacturability deteriorates, the Cr content is set to 20.5 to 22.0 mass%.

フェライト系ステンレス鋼板に含まれるCuは、0.3mass%以上含有することによって隙間腐食を低減させる効果を発揮するが、含有量が0.6mass%を超えると熱間加工性が劣化するので、Cuの含有量は0.3〜0.6mass%とした。   Cu contained in a ferritic stainless steel sheet exhibits the effect of reducing crevice corrosion by containing 0.3 mass% or more, but if the content exceeds 0.6 mass%, hot workability deteriorates, so the inclusion of Cu The amount was 0.3 to 0.6 mass%.

フェライト系ステンレス鋼板に含まれるTiは、0.1mass%以上含有することによって、孔食電位を上げてSUS304と同等の耐孔食性を得ることができ、靭性の低下によって深絞りなどの加工性もSUS304やSUS430に比較して優れたものとなるが、含有量が0.35mass%を超えると靭性が著しく悪化するので、Ti含有量は0.1〜0.35mass%とした。   By containing 0.1 mass% or more of Ti contained in the ferritic stainless steel sheet, the pitting corrosion potential can be increased and the pitting corrosion resistance equivalent to SUS304 can be obtained. However, when the content exceeds 0.35 mass%, the toughness deteriorates remarkably, so the Ti content is set to 0.1 to 0.35 mass%.

また、請求項2の発明に係る磁気エンコーダ用パルサーリングは、上記構成におけるホルダが、非回転のシールリップに摺動可能に密接されることによって密封装置の一部をなすものである。   A pulsar ring for a magnetic encoder according to a second aspect of the present invention forms a part of a sealing device when the holder in the above configuration is slidably brought into close contact with a non-rotating seal lip.

請求項1の発明に係る磁気エンコーダ用パルサーリングによれば、ホルダが磁性を有するフェライト系ステンレス鋼板からなるため、磁性粉末を混合したゴム状弾性材料からなるパルサー本体に着磁することによる安定した強い磁界が得られ、回転検出精度の信頼性を確保することができる。また、ホルダがSUS430からなるものと比較して耐食性が格段に優れており、高価なNiやMoを含有しなくてもSUS304と同等の耐食性が得られるので、安価に提供することができ、加工性も向上することができる。   According to the pulsar ring for a magnetic encoder according to the invention of claim 1, since the holder is made of a ferritic stainless steel plate having magnetism, the pulsar body made of a rubber-like elastic material mixed with magnetic powder is stably magnetized. A strong magnetic field can be obtained, and the reliability of rotation detection accuracy can be ensured. In addition, the holder is remarkably superior in corrosion resistance as compared with the one made of SUS430, and even if it does not contain expensive Ni or Mo, the corrosion resistance equivalent to that of SUS304 can be obtained. Can also be improved.

しかもホルダを形成しているフェライト系ステンレス鋼板は、SUS304と比較して密度が低いので軽量化及び回転トルクの低減が可能であり、さらにはSUS304と比較して熱膨張率が小さいので、熱環境の変化による変形が生じにくく、その結果、熱環境の変化によって磁界が不安定にならず、回転検出精度の信頼性を確保することができる。   Moreover, since the ferritic stainless steel sheet forming the holder has a lower density than SUS304, it is possible to reduce the weight and reduce the rotational torque. Furthermore, since the thermal expansion coefficient is smaller than that of SUS304, As a result, the magnetic field does not become unstable due to the change of the thermal environment, and the reliability of the rotation detection accuracy can be ensured.

請求項2の発明に係る磁気エンコーダ用パルサーリングによれば、ホルダが密封装置の一部をなし、シールリップに摺動可能に密接されるものである場合、泥水や塩水に曝されても錆の発生によるパルサー本体の剥離や、シールリップとの摺動面の腐蝕による摩耗が有効に防止される。しかも、ホルダを形成しているフェライト系ステンレス鋼板は、SUS304と比較して熱伝導率が高いので、シールリップとの摺動により発生する熱を逃がしやすく、その結果、シールリップの耐久性及びシール性が確保される。   According to the pulsar ring for the magnetic encoder according to the invention of claim 2, when the holder forms a part of the sealing device and is slidably in close contact with the seal lip, it is rusted even when exposed to muddy water or salt water. It is possible to effectively prevent the pulsar body from being peeled off due to the occurrence of wear and the wear due to the corrosion of the sliding surface with the seal lip. Moreover, since the ferritic stainless steel plate forming the holder has a higher thermal conductivity than SUS304, heat generated by sliding with the seal lip is easily released. As a result, the durability of the seal lip and the seal Sex is secured.

以下、本発明に係る磁気エンコーダ用パルサーリングについて、図面を参照しながら説明する。   Hereinafter, a pulsar ring for a magnetic encoder according to the present invention will be described with reference to the drawings.

図1は、本発明に係る磁気エンコーダ用パルサーリングの好ましい実施の形態を示す部分的な断面斜視図で、この図1に示されるパルサーリング10は、回転側部材の外周に取り付けられる環状のホルダ11と、このホルダ11に一体的に設けられたパルサー本体12からなる。   FIG. 1 is a partial cross-sectional perspective view showing a preferred embodiment of a pulsar ring for a magnetic encoder according to the present invention. A pulsar ring 10 shown in FIG. 1 is an annular holder attached to the outer periphery of a rotating side member. 11 and a pulsar main body 12 provided integrally with the holder 11.

ホルダ11は、軸心を通る平面で切断した形状が略L字形をなしており、すなわち取付筒部11aと、その軸方向一端から外周側へ円盤状に延びるフランジ部11bとからなる。   The holder 11 has a substantially L-shaped shape cut by a plane passing through the shaft center. That is, the holder 11 includes an attachment tube portion 11a and a flange portion 11b extending in a disk shape from one end in the axial direction to the outer peripheral side.

パルサー本体12は、ホルダ11のフランジ部11bの外側面(取付筒部11aの突出方向と反対側の面)に一体的に成形されたものであって、磁性粉末を混合した合成樹脂又はゴム状弾性材料からなり、円周方向所定ピッチでS極とN極が交互に着磁された円盤状の多極磁石である。   The pulsar body 12 is integrally formed on the outer surface of the flange portion 11b of the holder 11 (the surface opposite to the protruding direction of the mounting tube portion 11a), and is made of synthetic resin or rubber mixed with magnetic powder. It is a disc-shaped multipolar magnet made of an elastic material and having S poles and N poles alternately magnetized at a predetermined pitch in the circumferential direction.

ホルダ11は、Crを20.5〜22.0mass%、Cuを0.3〜0.6mass%、Tiを0.1〜0.35mass%含有するフェライト系ステンレス鋼板を打ち抜きプレス成形することによって製作したものである。   The holder 11 is manufactured by punching and pressing a ferritic stainless steel plate containing 20.5 to 22.0 mass% of Cr, 0.3 to 0.6 mass% of Cu, and 0.1 to 0.35 mass% of Ti.

以上のように構成された磁気エンコーダ用パルサーリング10は、ホルダ11が、その取付筒部11aにおいて、不図示の回転体(例えば回転軸あるいは軸受の内輪など)の外周に圧入等の手段により取り付けられ、この回転体と一体に回転するものである。一方、パルサー本体12と軸方向に対向して、不図示の磁気センサが非回転状態に配置されており、この磁気センサの検出面の正面を、前記回転体と一体に回転するパルサーリング10のパルサー本体12に着磁されたN極とS極が回転方向へ交互に通過することによって、磁界の変化に対応した波形のパルス状の信号が出力され、これによって、回転角や回転速度を計測することができる。   In the magnetic encoder pulsar ring 10 configured as described above, the holder 11 is attached to the outer periphery of a rotating body (not shown) (for example, a rotating shaft or an inner ring of a bearing) by means such as press fitting in the mounting cylinder portion 11a. And rotates integrally with the rotating body. On the other hand, a magnetic sensor (not shown) is arranged in a non-rotating state so as to face the pulsar main body 12 in the axial direction, and the front surface of the detection surface of the magnetic sensor is rotated integrally with the rotating body. By alternately passing the N pole and S pole magnetized in the pulsar body 12 in the rotation direction, a pulsed signal with a waveform corresponding to the change in the magnetic field is output, thereby measuring the rotation angle and rotation speed. can do.

また、このパルサーリング10は、先に説明した図2と同様、密封装置100の回転側密封要素(スリンガ)を兼ねることができる。すなわちこの場合は、ホルダ11のフランジ部11bにおけるパルサー本体12との接合面と反対側の面(内側面)に、図2に示されるスラストリップ102の先端を摺動可能に密接させ、その内周側のラジアルリップ103の先端内周縁を、ホルダ11の取付筒部11aの外周面に摺動可能に密接させることになる。   Moreover, this pulsar ring 10 can also serve as the rotation side sealing element (slinger) of the sealing device 100 as in FIG. 2 described above. That is, in this case, the tip of the thrust strip 102 shown in FIG. 2 is slidably brought into close contact with the surface (inner surface) on the opposite side (inner surface) of the flange portion 11b of the holder 11 to the pulsar body 12. The inner peripheral edge of the distal end of the radial lip 103 on the peripheral side is brought into close contact with the outer peripheral surface of the mounting cylinder portion 11a of the holder 11 so as to be slidable.

表1は、Crを21mass%、Cuを0.4mass%、Tiを0.3mass%、残部がFeとその他の微少量の金属及び不可避的不純物からなる実施例のフェライト系ステンレス鋼板と、他の材質(比較例1〜3)のステンレス鋼板において、孔食電位、絞り加工の容易性、磁性の有無、密度、熱膨張係数、熱伝導率を比較して示すものである。なお、比較例1のステンレス鋼板はSUS430であって、Crを16.1mass%含有しており、比較例2のステンレス鋼板はSUS304であって、Crを18.2mass%、Niを8.2mass%含有しており、比較例3のステンレス鋼板は先に従来技術として説明した特許文献1に開示された材質にほぼ相当するSUS430J1Lであって、Crを19.2mass%、Cuを0.5mass%、Nbを0.4mass%含有している。

Figure 2009139124
Table 1 shows examples of ferritic stainless steel plates of 21 mass% Cr, 0.4 mass% Cu, 0.3 mass% Ti, the balance Fe and other minute metals and inevitable impurities, and other materials ( In the stainless steel plates of Comparative Examples 1 to 3, the pitting corrosion potential, ease of drawing, presence / absence of magnetism, density, thermal expansion coefficient, and thermal conductivity are shown in comparison. The stainless steel plate of Comparative Example 1 is SUS430 and contains 16.1 mass% Cr, and the stainless steel plate of Comparative Example 2 is SUS304, which contains 18.2 mass% Cr and 8.2 mass% Ni. The stainless steel plate of Comparative Example 3 is SUS430J1L, which is substantially equivalent to the material disclosed in Patent Document 1 described above as the prior art, and Cr is 19.2 mass%, Cu is 0.5 mass%, and Nb is 0.4 mass%. Contains.
Figure 2009139124

ここで、孔食電位とは、酸化物皮膜により不働態化したステンレス鋼板の表面に孔状の局部腐食(孔食)が発生する臨界の電位であり、この値が高いほど耐食性が高い。そして表1によれば、実施例のステンレス鋼板の孔食電位は、比較例1(SUS430)と比較して格段に高く、また、Crの含有量が19.2 mass%でTiを含有しない、特許文献1にほぼ相当する比較例3(SUS430J1L)よりも十分に高く、比較例2(SUS304)と同等の高い値を示している。したがってSUS304に匹敵する優れた耐食性を有することがわかる。   Here, the pitting potential is a critical potential at which pore-like local corrosion (pitting corrosion) occurs on the surface of a stainless steel plate passivated by an oxide film, and the higher this value, the higher the corrosion resistance. And according to Table 1, the pitting corrosion potential of the stainless steel plate of the example is much higher than that of Comparative Example 1 (SUS430), and the Cr content is 19.2 mass% and does not contain Ti. 1 is sufficiently higher than Comparative Example 3 (SUS430J1L) substantially corresponding to 1, and shows a high value equivalent to Comparative Example 2 (SUS304). Therefore, it turns out that it has the outstanding corrosion resistance comparable to SUS304.

r値(ランクフォード値)は、塑性異方性を持つ材料に引張変形を与えたときの幅方向の歪と板厚方向の歪の比であり、同種の材料ではこの値が大きいほど絞り加工性が良い。そして表1によれば、実施例のステンレス鋼板は平均r値が比較例1及び比較例2よりも高く、すなわちSUS430及びSUS304よりも優れた加工性を有することがわかる。このため、図1に示されるような断面形状のホルダ11を深絞りによって容易に成形することができる。   The r value (Rankford value) is the ratio of the strain in the width direction to the strain in the plate thickness direction when tensile deformation is applied to a material having plastic anisotropy. Good sex. And according to Table 1, it turns out that the stainless steel plate of an Example has an average r value higher than the comparative example 1 and the comparative example 2, ie, has the workability superior to SUS430 and SUS304. For this reason, the holder 11 having a cross-sectional shape as shown in FIG. 1 can be easily formed by deep drawing.

また、実施例のフェライト系ステンレス鋼板は、比較例2(SUS304)よりも密度が低く、熱膨張係数が小さく、熱伝導率が高いことがわかる。   Moreover, it turns out that the ferritic stainless steel plate of an Example has a density lower than the comparative example 2 (SUS304), a small thermal expansion coefficient, and high thermal conductivity.

本発明に係る磁気エンコーダ用パルサーリングの好ましい実施の形態を、軸心Oを通る平面で切断して示す部分的な断面斜視図である。1 is a partial sectional perspective view showing a preferred embodiment of a pulsar ring for a magnetic encoder according to the present invention by cutting along a plane passing through an axis O. FIG. 自動車用車輪懸架装置の軸受部を密封する密封装置に一体に設けられた従来の磁気エンコーダを、軸心を通る平面で切断して示す装着状態の断面図である。It is sectional drawing of the mounting state which shows the conventional magnetic encoder integrally provided in the sealing device which seals the bearing part of the wheel suspension apparatus for motor vehicles cut | disconnected by the plane which passes along an axial center.

符号の説明Explanation of symbols

10 パルサーリング
11 ホルダ
12 パルサー本体
10 Pulsar ring 11 Holder 12 Pulsar body

Claims (2)

回転側部材の外周に取り付けられる環状のホルダと、磁性粉末を混合したゴム状弾性材料で成形されて多極着磁され前記ホルダに一体的に接合されたパルサー本体とからなり、前記ホルダが、Crを20.5〜22.0mass%、Cuを0.3〜0.6mass%、Tiを0.1〜0.35mass%含有するフェライト系ステンレス鋼板からなることを特徴とする磁気エンコーダ用パルサーリング。   An annular holder attached to the outer periphery of the rotating side member, and a pulsar main body molded with a rubber-like elastic material mixed with magnetic powder and multipolarly magnetized and integrally joined to the holder, A pulsar ring for a magnetic encoder, comprising a ferritic stainless steel plate containing 20.5 to 22.0 mass% of Cr, 0.3 to 0.6 mass% of Cu, and 0.1 to 0.35 mass% of Ti. ホルダが、非回転のシールリップに摺動可能に密接されることによって密封装置の一部をなすことを特徴とする請求項1に記載の磁気エンコーダ用パルサーリング。   The pulsar ring for a magnetic encoder according to claim 1, wherein the holder forms a part of a sealing device by being slidably brought into close contact with a non-rotating seal lip.
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPWO2018181923A1 (en) * 2017-03-31 2020-02-20 大阪瓦斯株式会社 Electrochemical devices, energy systems, and solid oxide fuel cells
US11233262B2 (en) 2017-03-31 2022-01-25 Osaka Gas Co., Ltd. Electrochemical element, electrochemical module, electrochemical device, energy system, solid oxide fuel cell and manufacturing method for electrochemical element

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JP2001242187A (en) * 2000-03-01 2001-09-07 Ntn Corp Magnetic encoder, bearing for wheel, and method for manufacturing magnetic encoder
JP2001255337A (en) * 2000-03-09 2001-09-21 Uchiyama Mfg Corp Pack seal
JP2006170308A (en) * 2004-12-15 2006-06-29 Nsk Ltd Rolling bearing unit for wheel
JP2006329750A (en) * 2005-05-25 2006-12-07 Jtekt Corp Magnetic encoder and roller bearing device using it

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Publication number Priority date Publication date Assignee Title
JP2001242187A (en) * 2000-03-01 2001-09-07 Ntn Corp Magnetic encoder, bearing for wheel, and method for manufacturing magnetic encoder
JP2001255337A (en) * 2000-03-09 2001-09-21 Uchiyama Mfg Corp Pack seal
JP2006170308A (en) * 2004-12-15 2006-06-29 Nsk Ltd Rolling bearing unit for wheel
JP2006329750A (en) * 2005-05-25 2006-12-07 Jtekt Corp Magnetic encoder and roller bearing device using it

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPWO2018181923A1 (en) * 2017-03-31 2020-02-20 大阪瓦斯株式会社 Electrochemical devices, energy systems, and solid oxide fuel cells
US11228041B2 (en) 2017-03-31 2022-01-18 Osaka Gas Co., Ltd. Electrochemical device, energy system and solid oxide fuel cell
US11233262B2 (en) 2017-03-31 2022-01-25 Osaka Gas Co., Ltd. Electrochemical element, electrochemical module, electrochemical device, energy system, solid oxide fuel cell and manufacturing method for electrochemical element
JP7072558B2 (en) 2017-03-31 2022-05-20 大阪瓦斯株式会社 Electrochemical equipment, energy systems, and solid oxide fuel cells

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