JP2002333033A - Wheel bearing - Google Patents
Wheel bearingInfo
- Publication number
- JP2002333033A JP2002333033A JP2001327554A JP2001327554A JP2002333033A JP 2002333033 A JP2002333033 A JP 2002333033A JP 2001327554 A JP2001327554 A JP 2001327554A JP 2001327554 A JP2001327554 A JP 2001327554A JP 2002333033 A JP2002333033 A JP 2002333033A
- Authority
- JP
- Japan
- Prior art keywords
- plate
- seal
- magnet
- upright
- seal plate
- 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
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、自動車等におけ
る車輪用軸受に関し、特に回転検出用の磁気エンコーダ
を一体化した車輪用軸受に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bearing for a wheel in an automobile or the like, and more particularly to a bearing for a wheel in which a magnetic encoder for detecting rotation is integrated.
【０００２】[0002]
【従来の技術】従来、図１０に示すように転動体１０３
を介して転接する内方部材１０１および外方部材１０２
間にシール装置１０５を設けた車輪用軸受において、シ
ール装置１０５に磁気エンコーダ１０６を一体化させた
ものが提案されている（例えば、特開平６−２８１０１
８号）。シール装置１０５は、各々断面Ｌ字状とされた
第１，第２のシール板１０７，１０８を内方部材１０１
および外方部材１０２にそれぞれ嵌合させ、第２のシー
ル板１０８にリップ１０９を設けたものである。第１の
シール板１０７は、スリンガと呼ばれる。磁気エンコー
ダ１０６は、磁性体粉が混入された弾性部材１１１を第
１のシール板１０７に加硫接着したものである。多極磁
石１１１は、円周方向に交互に磁極が形成されたもので
あり、対面配置された磁気センサ１１０で検出される。2. Description of the Related Art Conventionally, as shown in FIG.
Inner member 101 and outer member 102 which are rolled through
As a wheel bearing provided with a sealing device 105 between them, a bearing in which a magnetic encoder 106 is integrated with the sealing device 105 has been proposed (for example, Japanese Patent Laid-Open No. 6-28101).
No. 8). The sealing device 105 couples the first and second sealing plates 107 and 108 each having an L-shaped cross section to the inner member 101.
And a lip 109 provided on the second seal plate 108. The first seal plate 107 is called a slinger. The magnetic encoder 106 is obtained by vulcanizing and bonding an elastic member 111 mixed with a magnetic powder to the first seal plate 107. The multi-pole magnet 111 has magnetic poles formed alternately in the circumferential direction, and is detected by the magnetic sensor 110 disposed facing the magnetic pole.
【０００３】[0003]
【発明が解決しようとする課題】しかし上記構成では、
多極磁石１１１と磁気センサ１１０との間の隙間に石な
どの異物が噛み込んだ場合に、多極磁石１１１が損傷す
る恐れがある。However, in the above configuration,
When a foreign substance such as a stone gets into the gap between the multi-pole magnet 111 and the magnetic sensor 110, the multi-pole magnet 111 may be damaged.
【０００４】この発明の目的は、多極磁石と磁気センサ
との間に噛み込む異物で多極磁石が損傷することを防止
できる車輪用軸受を提供することである。An object of the present invention is to provide a wheel bearing that can prevent the multipolar magnet from being damaged by a foreign substance that bites between the multipolar magnet and the magnetic sensor.
【０００５】[0005]
【課題を解決するための手段】この発明における第１の
発明に係る車輪用軸受は、内方部材および外方部材と、
これら内外の部材間に収容される複数の転動体と、上記
内外の部材間の環状空間の端部を密封するシール装置と
からなり、上記シール装置が、上記内方部材と外方部材
のうちの互いに異なる部材に各々取付けられた第１およ
び第２の環状のシール板を有し、両シール板は、各々円
筒部と立板部とでなる断面Ｌ字状に形成されて互いに対
向し、第１のシール板は上記内方部材および外方部材の
うちの回転側部材に嵌合され、立板部は軸受の外方側に
配されると共に、周方向に交互に磁極が形成された多極
磁石が取付けられ、第２のシール板は上記立板部に摺接
するサイドリップと円筒部に摺接するラジアルリップと
を一体に有し、この第２のシール板の円筒部と上記第１
のシール板の立板部の先端とを僅かな径方向隙間をもっ
て対峙させた車輪用軸受において、上記多極磁石の外方
側を非磁性体製の保護板で被覆したことを特徴とする。
上記多極磁石は、磁性体粉が混入された弾性部材または
プラスチックであっても良く、また焼結磁石からなるも
のであっても良い。この構成によると、多極磁石の外方
側が非磁性体製の保護板で被覆されるので、多極磁石と
磁気センサとの隙間に異物が噛み込むことがあっても、
多極磁石が損傷することが防止される。保護板は非磁性
体であるため、保護板の存在が磁気センサの検出を妨げ
ることがない。上記多極磁石が、磁性体粉が混入された
弾性部材またはプラスチックである場合は、成形が容易
であり、シール板の立板部に対する係合部分を形成する
など、自由な形状のものが容易に製造でき、立板部への
取付も容易である。多極磁石が弾性部材である場合は、
加硫接着により立板部に取付けることができる。多極磁
石が弾性部材である場合は、柔らかくて異物と接触する
と損傷し易いが、そのため上記のように保護板で被覆さ
れることによる損傷防止効果が、より効果的である。多
極磁石が焼結磁石である場合は、磁力に優れる。According to a first aspect of the present invention, there is provided a wheel bearing comprising: an inner member; an outer member;
A plurality of rolling elements housed between these inner and outer members, and a sealing device for sealing an end of an annular space between the inner and outer members, wherein the sealing device is one of the inner member and the outer member. A first and a second annular seal plate respectively attached to different members of each other, the two seal plates are formed in an L-shaped cross section composed of a cylindrical portion and an upright plate portion and face each other, The first seal plate is fitted to the rotating member of the inner member and the outer member, the upright portion is disposed on the outer side of the bearing, and magnetic poles are alternately formed in the circumferential direction. A multi-pole magnet is mounted, the second seal plate integrally has a side lip slidingly contacting the upright plate portion and a radial lip slidingly contacting the cylindrical portion.
In the wheel bearing of the present invention, the outer side of the multi-pole magnet is covered with a protection plate made of a non-magnetic material.
The multipole magnet may be an elastic member or a plastic mixed with a magnetic powder, or may be a sintered magnet. According to this configuration, since the outer side of the multi-pole magnet is covered with the protection plate made of a non-magnetic material, even if foreign matter may bite into the gap between the multi-pole magnet and the magnetic sensor,
Damage to the multipole magnet is prevented. Since the protection plate is a non-magnetic material, the presence of the protection plate does not hinder the detection of the magnetic sensor. When the multi-pole magnet is an elastic member or plastic mixed with magnetic powder, it is easy to mold, and it is easy to form the multi-pole magnet in a free shape such as forming an engagement portion with a standing plate portion of a seal plate. And it is easy to attach to the upright. If the multi-pole magnet is an elastic member,
It can be attached to the standing plate by vulcanization bonding. When the multipolar magnet is an elastic member, it is soft and easily damaged when it comes into contact with foreign matter. Therefore, the effect of preventing damage by being covered with the protective plate as described above is more effective. When the multipolar magnet is a sintered magnet, it has excellent magnetic force.
【０００６】この発明において、上記保護板が、上記内
方部材および外方部材のうちの回転側の部材に取付けら
れていても良い。多極磁石は回転側の部材に設けられる
ため、回転側の部材に保護板を設けることにより、回転
の障害となることなく、保護板を多極磁石に接して設け
ることができる。このため、多極磁石と磁気センサとの
間に保護板を介在させながら、多極磁石と磁気センサと
の距離を、回転許容のために広げる必要がなく、回転数
の検出出力の低下の問題がない。In the present invention, the protection plate may be attached to a rotating member of the inner member and the outer member. Since the multi-pole magnet is provided on the rotating member, by providing the protecting plate on the rotating member, the protecting plate can be provided in contact with the multi-pole magnet without obstructing rotation. For this reason, it is not necessary to increase the distance between the multi-pole magnet and the magnetic sensor to allow rotation while interposing a protective plate between the multi-pole magnet and the magnetic sensor. There is no.
【０００７】この発明において、上記第１のシール板
は、外方部材および内方部材のうちの回転側部材となる
内方部材に嵌合されるものとしても良い。この発明にお
ける請求項５に記載の発明は、請求項１に記載の発明に
おいて、第１のシール板を上記内方部材に嵌合させた構
成に限定したものである。In the present invention, the first seal plate may be fitted to an inner member which is a rotation side member of the outer member and the inner member. According to a fifth aspect of the present invention, in the first aspect, the invention is limited to a configuration in which a first seal plate is fitted to the inner member.
【０００８】この発明において、上記保護板が断面Ｌ字
状をなし、上記多極磁石を被覆する立板部と、上記内方
部材および外方部材のうちの回転側部材に嵌合する円筒
部とからなり、この円筒部に上記第１のシール板を嵌合
させても良い。このように、保護板を断面Ｌ字状とする
ことにより、その円筒部を回転側部材に嵌合させだけ
で、保護板の立板部が多極磁石を被覆するように、保護
板を取付けることができる。そのため、保護板の取付を
円筒部で堅固に行うことができ、かつ簡単に取付けるこ
とができる。In the present invention, the protection plate has an L-shaped cross section, and a standing plate portion for covering the multipole magnet, and a cylindrical portion fitted to a rotating member of the inner member and the outer member. The first seal plate may be fitted to this cylindrical portion. As described above, by forming the protection plate into an L-shaped cross section, the protection plate is attached so that the standing plate portion of the protection plate covers the multipolar magnet only by fitting the cylindrical portion to the rotating member. be able to. Therefore, the protection plate can be firmly mounted on the cylindrical portion and can be easily mounted.
【０００９】この発明において、上記保護板と、上記内
方部材および外方部材のうちの回転側部材との嵌合部に
密封用の弾性部材を介在させても良い。このように保護
板と回転側部材との嵌合部に弾性部材を介在させること
により、両者の嵌合部のシール性を高め、この嵌合部か
ら水やゴミ等が軸受内に侵入することを防止できる。In the present invention, a sealing elastic member may be interposed at a fitting portion between the protective plate and the rotating member of the inner member and the outer member. By interposing the elastic member in the fitting portion between the protection plate and the rotating side member in this manner, the sealing performance of both fitting portions is enhanced, and water, dust and the like enter the bearing from the fitting portion. Can be prevented.
【００１０】この発明において、上記保護板の外径縁を
上記第１のシール板の立板部外径縁に係止させても良
い。このように、第１のシール板の立板部外径縁に係止
させる構成とすることにより、保護板を回転側部材に簡
単に取付けることができる。また、多極磁石を設ける立
板部に係合させるので、保護板が多極磁石を被覆するよ
うに、堅固に取付けることが簡単である。In the present invention, the outer diameter edge of the protection plate may be engaged with the outer diameter edge of the upright portion of the first seal plate. As described above, by employing a configuration in which the protection plate is locked to the outer diameter edge of the upright portion of the first seal plate, the protection plate can be easily attached to the rotating member. In addition, since the protection plate is engaged with the vertical plate portion on which the multipole magnet is provided, it is easy to firmly mount the protection plate so that the protection plate covers the multipole magnet.
【００１１】この発明において、上記多極磁石を、上記
保護板と上記第１のシール板の立板部とで挟持した状態
で、これら保護板と立板部とに接着しても良い。多極磁
石が弾性部材である場合は、上記接着として加硫接着し
ても良い。この構成の場合、多極磁石の第１のシール板
への接着時に、保護板を同時に接着することができる。
そのため保護板の回転側部材への取付けが簡単に行え
る。In the present invention, the multipole magnet may be adhered to the protection plate and the upright portion while being sandwiched between the protection plate and the upright portion of the first seal plate. When the multipolar magnet is an elastic member, vulcanization bonding may be used as the bonding. In the case of this configuration, the protection plate can be simultaneously bonded when the multipole magnet is bonded to the first seal plate.
Therefore, the protection plate can be easily attached to the rotating side member.
【００１２】この発明における第２の発明にかかる車輪
用軸受は、内方部材および外方部材と、これらの内外の
部材間に収容される複数の転動体と、上記内外の部材間
の環状空間の端部を密封するシール装置とからなり、上
記シール装置が、上記内方部材と外方部材のうちの互い
に異なる部材に各々取付けられた第１および第２の環状
のシール板を有し、両シール板は、各々円筒部と立板部
とでなる断面Ｌ字状に形成されて互いに対向し、上記第
１のシール板の立板部は軸受の外方側に配され、上記第
２のシール板は上記立板部に摺接するサイドリップと円
筒部に摺接するラジアルリップとを一体に有し、この第
２のシール板の円筒部と上記第１のシール板の立板部の
先端とを僅かな径方向隙間をもって対峙させると共に、
上記第１のシール板の立板部に断面Ｌ字状の保護板を対
向させ、この保護板の立板部の内側面に、周方向に交互
に磁極が形成された多極磁石を取付け、上記保護板の円
筒部を、上記内方部材および外方部材のうちの回転側部
材に嵌合させると共に、この円筒部に上記第１のシール
板の円筒部をさらに嵌合させたことを特徴とする。上記
多極磁石は、第１の発明と同じく、磁性体粉が混入され
た弾性部材またはプラスチックであっても良く、また焼
結磁石からなるものであっても良い。この構成の場合、
多極磁石は、保護板の立板部の内側面に設けられるた
め、磁気センサとの隙間に異物が噛み込まれる場合、異
物は保護板と磁気センサとの間に噛み込まれることにな
り、多極磁石に直接に接しない。そのため、異物の噛み
込みで多極磁石が損傷することがない。保護板は非磁性
体であるため、保護板の存在が多極磁石の検出の妨げと
ならない。また、多極磁石は保護板に設けられるため、
シール装置のシール板とは別に多極磁石を設けることが
でき、シール装置の製造が簡単である。A wheel bearing according to a second aspect of the present invention is an inner member and an outer member, a plurality of rolling elements housed between the inner and outer members, and an annular space between the inner and outer members. Comprising a first and second annular seal plates respectively attached to mutually different members of the inner member and the outer member, The two seal plates are formed in an L-shaped cross section including a cylindrical portion and an upright portion, and face each other. The upright portion of the first seal plate is disposed outside a bearing, and The seal plate has a side lip slidingly in contact with the upright plate portion and a radial lip slidingly in contact with the cylindrical portion. The cylindrical portion of the second seal plate and the tip of the upright plate portion of the first seal plate And with a slight radial gap,
A protection plate having an L-shaped cross section is opposed to the standing plate portion of the first seal plate, and a multi-pole magnet having magnetic poles formed alternately in the circumferential direction is attached to the inner surface of the standing plate portion of the protection plate. The cylindrical portion of the protection plate is fitted to the rotating member of the inner member and the outer member, and the cylindrical portion of the first seal plate is further fitted to the cylindrical portion. And As in the first aspect, the multipolar magnet may be an elastic member or a plastic mixed with magnetic powder, or may be a sintered magnet. In this configuration,
Since the multi-pole magnet is provided on the inner surface of the upright portion of the protection plate, if a foreign object is caught in the gap between the magnetic sensor, the foreign object will be caught between the protection plate and the magnetic sensor. Do not touch the multipole magnet directly. Therefore, there is no possibility that the multipolar magnet is damaged by foreign matter being caught. Since the protection plate is a non-magnetic material, the presence of the protection plate does not hinder detection of the multipolar magnet. Also, since the multi-pole magnet is provided on the protection plate,
A multi-pole magnet can be provided separately from the seal plate of the seal device, and the manufacture of the seal device is simple.
【００１３】[0013]
【発明の実施の形態】この発明の第１の実施形態を図１
〜図３と共に説明する。この実施形態は、駆動輪の支持
に用いる車輪用軸受に適用した例であって、磁気エンコ
ーダがシールスリンガを兼用した例である。図１に示す
ように、この車輪用軸受は、内方部材１および外方部材
２と、これら内外の部材１，２間に収容される複数の転
動体３と、内外の部材１，２間の端部環状空間を密封す
るシール装置５，１３とを備える。一端のシール装置５
は、磁気エンコーダ２０（図３）付きのものである。内
方部材１および外方部材２は、転動体３の軌道面１ａ，
２ａを有しており、各軌道面１ａ，２ａは溝状に形成さ
れている。内方部材１および外方部材２は、各々転動体
３を介して互いに回転自在となった内周側および外周側
の部材のことであり、軸受内輪および軸受外輪の単独で
あっても、これら軸受内輪や軸受外輪と別の部品とが組
み合わさった組立部材であっても良い。また、内方部材
１は、軸であっても良い。転動体３は、ボールまたはこ
ろからなり、この例ではボールが用いられる。FIG. 1 shows a first embodiment of the present invention.
3 will be described together with FIG. This embodiment is an example in which the present invention is applied to a wheel bearing used for supporting driving wheels, and is an example in which a magnetic encoder also serves as a seal slinger. As shown in FIG. 1, the wheel bearing includes an inner member 1 and an outer member 2, a plurality of rolling elements 3 housed between the inner and outer members 1 and 2, and an inner member 1 and an outer member 2. And sealing devices 5 and 13 for sealing the end annular spaces. Sealing device 5 at one end
Has a magnetic encoder 20 (FIG. 3). The inner member 1 and the outer member 2 are provided with the raceway surfaces 1a,
2a, and each track surface 1a, 2a is formed in a groove shape. The inner member 1 and the outer member 2 are inner and outer members rotatable with respect to each other via the rolling elements 3, respectively. It may be an assembly member in which a bearing inner ring or a bearing outer ring is combined with another component. Further, the inner member 1 may be a shaft. The rolling element 3 is formed of a ball or a roller. In this example, a ball is used.
【００１４】この車輪用軸受は、複列の転がり軸受、詳
しくは複列のアンギュラ玉軸受とされていて、その軸受
内輪は、各転動体列の軌道面１ａ，１ａがそれぞれ形成
された一対の分割型の内輪１Ａ，１Ｂからなる。これら
内輪１Ａ，１Ｂは、ハブ輪６の軸部の外周に嵌合し、ハ
ブ輪６と共に上記内方部材１を構成する。なお、内方部
材１は、上記のようにハブ輪６および一対の分割型の内
輪１Ａ，１Ｂからなる３部品の組立部品とする代わり
に、ハブ輪６および片方の内輪１Ｂが一体化された軌道
面付きのハブ輪と、もう片方の内輪１Ａとで構成される
２部品からなるものとしても良い。This wheel bearing is a double-row rolling bearing, more specifically, a double-row angular ball bearing. The bearing inner ring has a pair of raceway surfaces 1a, 1a of each rolling element row. It consists of split type inner rings 1A and 1B. The inner rings 1A and 1B are fitted on the outer periphery of the shaft of the hub wheel 6, and constitute the inner member 1 together with the hub wheel 6. The inner member 1 is formed by integrating the hub wheel 6 and one inner ring 1B instead of the hub wheel 6 and the three-part assembly including the pair of split inner rings 1A and 1B as described above. It may be composed of two parts including a hub ring with a raceway surface and the other inner ring 1A.
【００１５】ハブ輪６には、等速自在継手７の一端（例
えば外輪）が連結され、ハブ輪６のフランジ部６ａに車
輪（図示せず）がボルト８で取付けられる。等速自在継
手７は、その他端（例えば内輪）が駆動軸（図示せず）
に連結される。外方部材２は、軸受外輪からなり、懸架
装置におけるナックル等からなるハウジング（図示せ
ず）に取付けられる。転動体３は各列毎に保持器４で保
持されている。One end (for example, an outer ring) of a constant velocity universal joint 7 is connected to the hub wheel 6, and a wheel (not shown) is attached to a flange portion 6 a of the hub wheel 6 with a bolt 8. The other end (for example, inner ring) of the constant velocity universal joint 7 has a drive shaft (not shown).
Linked to The outer member 2 is composed of a bearing outer ring, and is attached to a housing (not shown) composed of a knuckle or the like in a suspension device. The rolling elements 3 are held by a holder 4 for each row.
【００１６】図３は、磁気エンコーダ付きのシール装置
５を拡大して示す。このシール装置５は、内方部材１と
外方部材２に各々取付けられた第１および第２の環状の
シール板１１，１２を有する。両シール板１１，１２
は、各々円筒部１１ａ，１２ａと立板部１１ｂ，１２ｂ
とでなる断面Ｌ字状に形成されて互いに対向する。第１
のシール板１１は、内方部材１および外方部材２のうち
の回転側の部材である内方部材１に取付けられ、スリン
ガとなる。第１のシール板１１の立板部１１ｂは、軸受
外方側に配され、その外方側の側面に多極磁石１４が取
付けられている。この多極磁石１４は、第１のシール板
１１と共に磁気エンコーダ２０を構成するものであり、
周方向に交互に磁極Ｎ，Ｓ（図２）が形成されている。
磁極Ｎ，Ｓは、ピッチ円直径（ＰＣＤ）において、所定
のピッチｐとなるように形成されている。この磁気エン
コーダ２０の多極磁石１４に対面して、図３のように磁
気センサ１５を配置することにより、車輪回転速度の検
出用のロータリエンコーダが構成される。多極磁石１４
は、磁性体粉が混入された弾性部材またはプラスチック
であってもよく、また焼結磁石からなるものであっても
良い。多極磁石１４は、ゴム磁石からなる場合、立板部
１１ｂに加硫接着等で取付けられる。多極磁石１４の具
体的な材質例は、後に説明する。FIG. 3 shows a sealing device 5 with a magnetic encoder on an enlarged scale. The seal device 5 has first and second annular seal plates 11 and 12 attached to the inner member 1 and the outer member 2, respectively. Both seal plates 11, 12
Are cylindrical portions 11a and 12a and upright portions 11b and 12b, respectively.
And are opposed to each other. First
The seal plate 11 is attached to the inner member 1 which is a member on the rotation side of the inner member 1 and the outer member 2, and serves as a slinger. The upright portion 11b of the first seal plate 11 is disposed on the outer side of the bearing, and the multipole magnet 14 is attached to the outer side surface. This multi-pole magnet 14 constitutes a magnetic encoder 20 together with the first seal plate 11,
Magnetic poles N and S (FIG. 2) are formed alternately in the circumferential direction.
The magnetic poles N and S are formed to have a predetermined pitch p in a pitch circle diameter (PCD). By arranging the magnetic sensor 15 as shown in FIG. 3 so as to face the multipolar magnet 14 of the magnetic encoder 20, a rotary encoder for detecting the wheel rotation speed is configured. Multipole magnet 14
May be an elastic member or plastic mixed with magnetic powder, or may be made of a sintered magnet. When the multi-pole magnet 14 is made of a rubber magnet, it is attached to the standing plate portion 11b by vulcanization bonding or the like. Specific examples of the material of the multipole magnet 14 will be described later.
【００１７】第２のシール板１２は、その円筒部１２ａ
を外方部材２の内径に圧入状態に嵌合させることで外方
部材２に取付けられている。この第２のシール板１２
は、第１のシール板１１の立板部１１ｂに摺接するサイ
ドリップ１６ａと円筒部１１ａに摺接するラジアルリッ
プ１６ｂ，１６ｃとを一体に有する。これらリップ１６
ａ〜１６ｃは、第２のシール板１２に加硫接着された弾
性部材１６の一部として設けられている。また、第２の
シール板１２は、固定側部材である外方部材２との嵌合
部に弾性部材１６を抱持したものとしてある。第２のシ
ール板１２の円筒部１２ａと第１のシール板１１の立板
部１１ｂの先端とは僅かな径方向隙間をもって対峙さ
せ、その隙間でラビリンスシール１７を構成している。The second sealing plate 12 has a cylindrical portion 12a.
Are fitted to the inner diameter of the outer member 2 in a press-fit state, and thus are attached to the outer member 2. This second sealing plate 12
Has a side lip 16a slidingly contacting the upright portion 11b of the first seal plate 11 and radial lips 16b and 16c slidingly contacting the cylindrical portion 11a. These lips 16
a to 16 c are provided as a part of the elastic member 16 which is vulcanized and bonded to the second seal plate 12. The second seal plate 12 has an elastic member 16 held in a fitting portion with the outer member 2 which is a fixed-side member. The cylindrical portion 12a of the second seal plate 12 and the tip of the standing plate portion 11b of the first seal plate 11 are opposed to each other with a small radial gap, and a labyrinth seal 17 is formed by the gap.
【００１８】多極磁石１４の軸受外方側は、非磁性体製
の保護板１８で被覆されている。保護板１８を構成する
非磁性体は、非磁性体の金属であっても、樹脂材であっ
ても良い。保護板１８は、円筒部１８ａと立板部１８ｂ
とでなる断面Ｌ字状に形成され、その円筒部１８ａを回
転側部材である内方部材１の外径に圧入状態に嵌合させ
ることで内方部材１に取付けられる。この取付状態で、
保護板１８の立板部１８ｂは多極磁石１４の軸受外側面
に密接する。なお、保護板１８の立板部１８ｂと多極磁
石１４とは離れていても良い。保護板１８の立板部１８
ｂの外径側端部１８ｂｂは、多極磁石１４の外径側端部
を覆うように軸内方に折り曲げられている。したがっ
て、前記ラビリンスシール１７は、具体的には、前記第
２のシール板１２の円筒部１２ａを抱持する弾性部材１
６の抱持部１６ｄと、保護板１８の外径側端部１８ｂｂ
の間の径方向隙間によって構成される。なお、保護板１
８の外径側端部１８ｂｂは、第１のシール板１１の立板
部１１ｂの外径縁に係止させてもよい。また、例えば図
８に示すように、第１のシール板１１と保護板１８との
間に多極磁石１４を密封しても良い。多極磁石１４が焼
結磁石からなる場合、このような密封構造が好ましい。The outer side of the bearing of the multipole magnet 14 is covered with a protection plate 18 made of a nonmagnetic material. The non-magnetic material forming the protection plate 18 may be a non-magnetic metal or a resin material. The protection plate 18 includes a cylindrical portion 18a and an upright plate portion 18b.
The cylindrical portion 18a is attached to the inner member 1 by press-fitting the cylindrical portion 18a to the outer diameter of the inner member 1 which is a rotation-side member. In this mounting state,
The standing plate portion 18b of the protection plate 18 is in close contact with the bearing outer surface of the multipole magnet 14. Note that the standing plate portion 18b of the protection plate 18 and the multipolar magnet 14 may be separated from each other. Standing plate portion 18 of protection plate 18
The outer-diameter end 18bb of b is bent inward to cover the outer-diameter end of the multipole magnet 14. Therefore, the labyrinth seal 17 is, specifically, the elastic member 1 holding the cylindrical portion 12a of the second seal plate 12.
6 and the outer diameter end 18bb of the protection plate 18
Are defined by radial gaps between them. In addition, the protection plate 1
8 may be engaged with the outer diameter edge of the standing plate portion 11b of the first seal plate 11. Further, as shown in FIG. 8, for example, the multipolar magnet 14 may be sealed between the first seal plate 11 and the protection plate 18. When the multipole magnet 14 is made of a sintered magnet, such a sealed structure is preferable.
【００１９】第１のシール板１１は、その円筒部１１ａ
を保護板１８の円筒部１８ａの外径面に圧入状態に嵌合
させることで、保護板１８を介して内方部材１に取付け
られている。なお、上記構成の車輪用軸受において、多
極磁石１４は、第１のシール板１１の立板部１１ｂに取
付けるのに代えて、保護板１８の立板部１８ｂの軸受内
方側面に取付けても良い。この場合も、多極磁石１４が
ゴム磁石である場合、立板部１８ｂへの取付けは、加硫
接着により行っても良い。The first seal plate 11 has a cylindrical portion 11a.
Is fitted into the outer diameter surface of the cylindrical portion 18a of the protection plate 18 in a press-fitted state, and thus is attached to the inner member 1 via the protection plate 18. In the wheel bearing having the above configuration, the multi-pole magnet 14 is attached to the inner side surface of the upright plate portion 18b of the protection plate 18 instead of being attached to the upright plate portion 11b of the first seal plate 11. Is also good. Also in this case, when the multipolar magnet 14 is a rubber magnet, the attachment to the standing plate portion 18b may be performed by vulcanization bonding.
【００２０】この構成の車輪用軸受によると、第１のシ
ール板１１の立板部１１ｂに、多極磁石１４が取付けら
れ、周方向に交互に磁極Ｎ，Ｓが形成されているため、
この多極磁石１４および第１のシール板１１により磁気
エンコーダ２０が構成され、多極磁石１４に対面する磁
気センサ１５で回転検出を行うことができる。多極磁石
１４と磁気センサ１５との間に保護カバー１８が介在す
るが、保護カバー１８は非磁性体であるため、磁束の流
れ経路に影響せず、磁気センサ１５による回転数検出の
精度低下の問題がない。内外の部材１，２間のシールに
ついては、第２のシール板１２に設けられた各シールリ
ップ１６ａ〜１６ｃの摺接と、第２のシール板１２の円
筒部１２ａに第１のシール板１１の立板部１１ｂの先端
が僅かな径方向隙間で対峙することで構成されるラビリ
ンスシール１７とで得られる。According to the wheel bearing of this configuration, the multipole magnet 14 is attached to the upright portion 11b of the first seal plate 11, and the magnetic poles N and S are formed alternately in the circumferential direction.
The multipolar magnet 14 and the first seal plate 11 constitute a magnetic encoder 20, and the rotation can be detected by the magnetic sensor 15 facing the multipolar magnet 14. A protective cover 18 is interposed between the multipole magnet 14 and the magnetic sensor 15, but since the protective cover 18 is a non-magnetic material, it does not affect the flow path of the magnetic flux, and the accuracy of the rotation speed detection by the magnetic sensor 15 is reduced. There is no problem. Regarding the seal between the inner and outer members 1 and 2, the first seal plate 11 is attached to the cylindrical portion 12 a of the second seal plate 12 by sliding contact of the seal lips 16 a to 16 c provided on the second seal plate 12. And a labyrinth seal 17 constituted by the tip of the standing plate portion 11b facing each other with a slight radial gap.
【００２１】また、この車輪用軸受では、多極磁石１４
の外方側が非磁性体製の保護板１８で被覆されているの
で、多極磁石１４と磁気センサ１５との隙間に異物が噛
み込んでも、異物が多極磁石１４に直接に接触せず、多
極磁石１４が損傷することが防止される。In this wheel bearing, the multipole magnet 14
Is covered with a protective plate 18 made of a non-magnetic material, so that even if a foreign substance is caught in the gap between the multi-pole magnet 14 and the magnetic sensor 15, the foreign substance does not directly contact the multi-pole magnet 14, Damage to the multipole magnet 14 is prevented.
【００２２】保護板１８は、回転側の部材である内方部
材１に取付けられているため、保護板１８と多極磁石１
４との間に、回転を許すための隙間を設ける必要がな
く、多極磁石１４とセンサ１５との間に保護板１８を介
在させながら、多極磁石１４とセンサ１５との距離を回
転許容のために広げる必要がなく、回転数の検出出力の
低下の問題がない。Since the protection plate 18 is attached to the inner member 1 which is a member on the rotation side, the protection plate 18 and the multi-pole magnet 1
4, there is no need to provide a gap for allowing rotation, and the distance between the multipole magnet 14 and the sensor 15 is allowed to rotate while the protective plate 18 is interposed between the multipole magnet 14 and the sensor 15. Therefore, there is no problem that the detection output of the rotation speed decreases.
【００２３】保護板１８は断面Ｌ字状をなし、多極磁石
１４を被覆する立板部１８ｂと、回転側部材である内方
部材１に嵌合する円筒部１８ａとからなり、またその円
筒部１８ａに第１のシール板１１を嵌合させているの
で、第１のシール板１１と保護板１８とを、限られた軸
受空間内で、簡単にかつ堅固に、回転側部材である内方
部材１に取付けることができる。The protection plate 18 has an L-shaped cross section, and comprises an upright plate portion 18b for covering the multipole magnet 14, and a cylindrical portion 18a fitted to the inner member 1 which is a rotating member. Since the first seal plate 11 is fitted into the portion 18a, the first seal plate 11 and the protection plate 18 can be easily and firmly connected to each other in the limited bearing space. It can be attached to the direction member 1.
【００２４】図４は、この発明の他の実施形態を示す。
この実施形態は、第１のシール板１１の円筒部１１ａ
を、回転側の部材である内方部材１の外径面に圧入状態
に嵌合させることにより、第１のシール板１１を内方部
材１に直接に取付けている。第１のシール板１１の円筒
部１１ａのうち、軸受外方部１１ａａは、軸受内方部よ
りも内径が若干大きく形成され、内方部材１の外径面と
の間に僅かな径方向隙間が生じている。また、上記軸受
外方部１１ａａは、軸受外方端で折り返した２重の折り
重なり形状とされ、その折り重なり部分の外径側層の内
側端から、立板部１１ｂが外径側に延びている。保護板
１８は、その円筒部１８ａを第１のシール板１１の円筒
部１１ａの軸受外方部１１ａａの内径面に圧入状態に嵌
合させることで、第１のシール板１１を介して内方部材
１に取付けられている。保護板１８の円筒部１８ａの内
径面には、弾性部材からなるシールリップ２１が加硫接
着等により一体に設けられ、このシールリップ２１で保
護板１８の円筒部１８ａと内方部材１との間が密封され
ている。この実施形態におけるその他の構成は、図１〜
図３と共に説明した実施形態と同じである。FIG. 4 shows another embodiment of the present invention.
In this embodiment, the cylindrical portion 11a of the first seal plate 11
The first seal plate 11 is directly attached to the inner member 1 by fitting the first seal plate 11 into the outer diameter surface of the inner member 1 which is a member on the rotation side. Of the cylindrical portion 11 a of the first seal plate 11, the outer bearing portion 11 aa is formed to have a slightly larger inner diameter than the inner bearing portion, and a slight radial gap is formed between the inner portion 1 and the outer diameter surface. Has occurred. Further, the outer bearing portion 11aa has a double folded shape folded back at the outer end of the bearing, and the standing plate portion 11b extends from the inner end of the outer diameter side layer of the overlap portion to the outer diameter side. ing. The protection plate 18 is fitted into the cylindrical portion 11a of the first seal plate 11 in a press-fit state on the inner diameter surface of the outer bearing portion 11aa of the cylindrical portion 11a of the first seal plate 11, so that the protection plate 18 is inwardly inserted through the first seal plate 11. It is attached to the member 1. A seal lip 21 made of an elastic member is integrally provided on the inner diameter surface of the cylindrical portion 18a of the protection plate 18 by vulcanization bonding or the like, and the seal lip 21 connects the cylindrical portion 18a of the protection plate 18 to the inner member 1. The space is sealed. Other configurations in this embodiment are shown in FIGS.
This is the same as the embodiment described with reference to FIG.
【００２５】この実施形態の場合、第１のシール板１１
が内方部材１に直接に嵌合して取付けられ、この第１の
シール板１１に保護板１８が取付けられているため、二
重に嵌合させる場合に比べて第１のシール板１１を内方
部材１に堅固に固定することができる。保護板１８は、
軸受組立前に予め第１のシール１１に取付けておくこと
により、第１のシール板１１と保護部材１８とを、一体
の組立部品として取り扱うこともできる。保護板１８
と、回転側部材である内方部材１との嵌合部には、弾性
部材からなるシールリップ２１を介在させているので、
保護板１８と内方部材１との嵌合面から軸受内へ水やゴ
ミなどが侵入することが防止できる。内方部材１と第１
のシール板１１との嵌合部は、圧入嵌合となっているた
め、この嵌合部によってもシール性が得られるが、保護
板１８に設けたシールリップ２１により、密封性が一層
高められる。In the case of this embodiment, the first seal plate 11
Are directly fitted and attached to the inner member 1 and the protection plate 18 is attached to the first seal plate 11, so that the first seal plate 11 is It can be firmly fixed to the inner member 1. The protection plate 18
By attaching the first seal plate 11 and the protection member 18 to the first seal 11 in advance before assembling the bearing, the first seal plate 11 and the protection member 18 can be handled as an integrated assembly. Protection plate 18
Since the seal lip 21 made of an elastic member is interposed at the fitting portion between the inner member 1 which is the rotation side member,
Water and dust can be prevented from entering the bearing from the fitting surface between the protection plate 18 and the inner member 1. Inner member 1 and first
Since the fitting portion with the seal plate 11 is press-fitted, sealing performance can be obtained by this fitting portion, but the sealing performance is further enhanced by the seal lip 21 provided on the protection plate 18. .
【００２６】図５は、この発明のさらに他の実施形態を
示す。この実施形態では、第１のシール板１１の円筒部
１１ａを、回転側の部材である内方部材１の外径面に圧
入状態に嵌合させて、第１のシール板１１を内方部材１
に直接に取付けている。保護板１８は、その立板部１８
ｂの外径側端部１８ｂｂを、第１のシール板１１の立板
部１１ｂの外径縁に係止させることで、第１のシール板
１１を介して内方部材１に取付けられている。具体的に
は、シール板立板部１１ｂの外径縁に、保護板１８ｂの
外径側端部１８ｂｂを加締めることにより係止してい
る。その加締め構造は、全周加締めであっても、また保
護板１８の外径縁に部分的に舌片を形成し、その舌片を
シール板立板部１１ｂに加締めてもよい。保護板１８
は、第１のシール板１１への係合により、多極磁石１４
の軸受外側面に密接する。また、保護板１８は、前記各
実施形態における円筒部１８ａを持たず、立板部１８ｂ
の内径側端部と内方部材１の外径面との間にラビリンス
隙間１９が形成されている。なお、保護板立板部１８ｂ
の内径側端部は、内方部材１の外径に接触させても良
い。この実施形態におけるその他の構成は、図１〜図３
と共に説明した前記の実施形態と同じである。FIG. 5 shows still another embodiment of the present invention. In this embodiment, the cylindrical portion 11a of the first seal plate 11 is press-fitted onto the outer diameter surface of the inner member 1 which is a member on the rotation side, and the first seal plate 11 is inserted into the inner member. 1
Directly attached to The protection plate 18 has its upright plate portion 18.
b is fixed to the inner member 1 via the first seal plate 11 by engaging the outer diameter end 18bb of the first seal plate 11 with the outer diameter edge of the upright plate portion 11b. . Specifically, the outer peripheral edge 18bb of the protection plate 18b is secured to the outer peripheral edge of the seal plate standing plate portion 11b by caulking. The caulking structure may be caulking all around, or a tongue piece may be partially formed on the outer diameter edge of the protection plate 18 and the tongue piece may be caulked to the seal plate standing plate portion 11b. Protection plate 18
Are connected to the first seal plate 11 so that the multi-pole magnet 14
Close to the outer surface of the bearing. Further, the protection plate 18 does not have the cylindrical portion 18a in each of the above-described embodiments, and the standing plate portion 18b
A labyrinth gap 19 is formed between the inner diameter side end portion and the outer diameter surface of the inner member 1. In addition, the protection plate standing plate portion 18b
May be brought into contact with the outer diameter of the inner member 1. Other configurations in this embodiment are shown in FIGS.
This is the same as the embodiment described above.
【００２７】この実施形態の場合、保護板１８の外縁を
第１のシール板１１の立板部１１ｂの外径縁に加締めて
係止させているので、第１のシール板１１を介して保護
板１８を回転側部材である内方部材１に簡単に取付ける
ことができる。In this embodiment, since the outer edge of the protection plate 18 is swaged and locked to the outer diameter edge of the upright portion 11b of the first seal plate 11, the protection plate 18 is interposed through the first seal plate 11. The protection plate 18 can be easily attached to the inner member 1 which is a rotation side member.
【００２８】図６は、この発明のさらに他の実施形態を
示す。この実施形態は、図５に示す実施形態において、
第１のシール板１１の立板部１１ｂと保護板１８とで多
極磁石１４を挟むようにして、多極磁石１４を第１のシ
ール板１１および保護板１８の両側に接着したものであ
る。多極磁石１４がゴム磁石である場合、上記接着は加
硫接着としても良い。この接着により、第１のシール板
１１、多極磁石１４、および保護板１８を一体としてい
る。これに限らず保護板１８を別途多極磁石１４に接着
しても良い。したがって、保護板１８は多極磁石１４お
よび第１のシール板１１を介して内方部材１に取付けら
れる。保護板１８の外径側端部１８ｂｂは、軸受内側へ
延びる円筒状とされ、また保護板１８の内径側端部１８
ｂｃも、軸受内側へ延びる円筒状とされている。この内
径側端部１８ｂｃと内方部材１の外径面との間にラビリ
ンス隙間１９が形成されている。なお、保護板１８の第
１のシール板１１への係止は行われていない。この実施
形態におけるその他の構成は、図５の実施形態と同じで
ある。FIG. 6 shows still another embodiment of the present invention. This embodiment differs from the embodiment shown in FIG.
The multipole magnet 14 is adhered to both sides of the first seal plate 11 and the protection plate 18 such that the multipole magnet 14 is sandwiched between the standing plate portion 11 b of the first seal plate 11 and the protection plate 18. When the multi-pole magnet 14 is a rubber magnet, the bonding may be vulcanization bonding. By this bonding, the first seal plate 11, the multipolar magnet 14, and the protection plate 18 are integrated. However, the invention is not limited thereto, and the protection plate 18 may be separately bonded to the multipolar magnet 14. Therefore, the protection plate 18 is attached to the inner member 1 via the multipole magnet 14 and the first seal plate 11. The outer diameter side end 18bb of the protection plate 18 is formed in a cylindrical shape extending toward the inside of the bearing, and the inner diameter side end 18bb of the protection plate 18 is formed.
bc also has a cylindrical shape extending inside the bearing. A labyrinth gap 19 is formed between the inner diameter side end portion 18bc and the outer diameter surface of the inner member 1. Note that the protection plate 18 is not locked to the first seal plate 11. Other configurations in this embodiment are the same as those in the embodiment of FIG.
【００２９】この実施形態の場合、多極磁石１４の第１
のシール板１１への接着時に、保護板１８を同時に接着
することもできる。そのため、保護板１８の回転側部材
である内方部材１への取付けが簡単に行える。In the case of this embodiment, the first
When bonding to the seal plate 11, the protection plate 18 can be bonded at the same time. Therefore, the protection plate 18 can be easily attached to the inner member 1 which is a rotation-side member.
【００３０】図７は、この発明のさらに他の実施形態を
示す。この実施形態は、この発明における第２の発明に
対応する。この実施形態では、保護板１８の立板部１８
ｂの内側面に磁気エンコーダ２０の多極磁石１４を取付
けている。多極磁石１４の取付は、接着等により行われ
る。多極磁石１４がゴム磁石である場合、加硫接着して
も良い。第１のシール板１１の立板部１１ｂと多極磁石
１４との間には隙間があっても、また隙間が無くても良
い。この構成の場合、多極磁石１４と保護板１８とで磁
気エンコーダ２０が構成される。なおこの実施形態で
は、保護板立板部１８ｂの外径側端部は、第１のシール
板１１の立板部１１ｂや多極磁石１４の外径端部を覆っ
ていない。この実施形態におけるその他の構成は、図１
〜図３と共に説明した前記実施形態と同じである。FIG. 7 shows still another embodiment of the present invention. This embodiment corresponds to the second invention of the present invention. In this embodiment, the standing plate portion 18 of the protection plate 18 is used.
The multi-pole magnet 14 of the magnetic encoder 20 is mounted on the inner surface of the b. The multipole magnet 14 is attached by bonding or the like. When the multipolar magnet 14 is a rubber magnet, it may be vulcanized and bonded. There may be a gap between the standing plate portion 11b of the first seal plate 11 and the multipole magnet 14, or there may be no gap. In this configuration, the multi-pole magnet 14 and the protection plate 18 constitute the magnetic encoder 20. In this embodiment, the outer diameter side end of the protection plate standing plate portion 18b does not cover the outer diameter end of the standing plate portion 11b of the first seal plate 11 or the multipole magnet 14. The other configuration in this embodiment is shown in FIG.
3 is the same as the embodiment described with reference to FIG.
【００３１】この実施形態の場合、磁気エンコーダ２０
を構成する多極磁石１４は、保護板１８の立板部１８ｂ
の内側面に設けられるため、磁気センサ１５との隙間に
異物が噛み込まれる場合、異物は保護板１８と磁気セン
サ１５との間に噛み込まれることになり、多極磁石１４
に直接に接しない。そのため、異物の噛み込みで多極磁
石１４が損傷することがない。保護板１８は非磁性体で
あるため、保護板１８の存在が磁気センサ１５の検出の
妨げとならない。また、多極磁石１４は、保護板１８に
設けられるため、シール装置５のシール板１１，１２と
は別に磁気エンコーダを設けることができ、シール装置
５の製造が簡単である。なお、多極磁石１４とシール板
１１の立板部１１ｂとを所定のエアギャップを設けて配
した例を示したが、このエアギャップをなくし、両部材
１４，１１ｂとを密着させても良い。In the case of this embodiment, the magnetic encoder 20
The multi-pole magnet 14 is formed by a standing plate portion 18b of the protection plate 18.
When the foreign matter is caught in the gap with the magnetic sensor 15, the foreign matter is caught between the protection plate 18 and the magnetic sensor 15, and thus the multi-pole magnet 14 is provided.
Do not touch directly. Therefore, the multipolar magnet 14 is not damaged by the foreign matter being caught. Since the protection plate 18 is a non-magnetic material, the presence of the protection plate 18 does not hinder the detection of the magnetic sensor 15. Further, since the multipolar magnet 14 is provided on the protection plate 18, a magnetic encoder can be provided separately from the seal plates 11 and 12 of the seal device 5, and the manufacture of the seal device 5 is simple. Although an example is shown in which the multipole magnet 14 and the upright portion 11b of the seal plate 11 are provided with a predetermined air gap, the air gap may be eliminated and the two members 14, 11b may be in close contact with each other. .
【００３２】上記各実施形態における多極磁石１４の材
質例を説明する。以下の各材質は、上記いずれの実施形
態においても適用できる。多極磁石１４を磁性体粉が混
入された弾性部材とする場合、その弾性材料としてゴム
材料を用いることができる。その場合、多極磁石１４は
ゴム磁石となる。磁性体粉にはフェライト等が用いられ
る。多極磁石１４を磁性体粉が混入されたプラスチック
とする場合、すなわちプラスチック磁石とする場合、磁
性体粉としてフェライト磁石や希土類磁石の粉末をプラ
スチックに混ぜて成形した磁石とされる。プラスチック
磁石は、成形したままで精度が高く、また薄肉品や複雑
な形状のものが容易に製造できる。多極磁石１４を焼結
磁石からなるものとする場合、例えば、原料合金を粉砕
した磁性体粉を、磁界中プレスにより粒子の方向を揃え
て圧粉成形し、焼結後に着磁したものとされる。焼結磁
石は、磁力が大きくできる利点がある。磁性体粉として
は、フェライト磁石やネオジウム系又はサマリウム系の
希土類磁石を用いることができる。多極磁石１４となる
焼結磁石は、必ずしも磁性体粉のみを焼結したものでな
くても良く、磁性体粉と他の材料を混合させた粉体を焼
結させたものであっても良い。An example of the material of the multipole magnet 14 in each of the above embodiments will be described. The following materials can be applied to any of the above embodiments. When the multi-pole magnet 14 is an elastic member mixed with magnetic powder, a rubber material can be used as the elastic material. In that case, the multipole magnet 14 is a rubber magnet. Ferrite or the like is used for the magnetic powder. When the multipole magnet 14 is made of plastic mixed with magnetic powder, that is, a plastic magnet, the magnetic powder is a magnet formed by mixing powder of ferrite magnet or rare earth magnet with plastic. The plastic magnet has high precision as it is molded, and thin-walled products and those having complicated shapes can be easily manufactured. When the multi-pole magnet 14 is made of a sintered magnet, for example, a magnetic powder obtained by pulverizing a raw material alloy is compacted by pressing the particles in a magnetic field while aligning the directions of the particles, and magnetized after sintering. Is done. The sintered magnet has an advantage that the magnetic force can be increased. As the magnetic powder, a ferrite magnet or a neodymium-based or samarium-based rare earth magnet can be used. The sintered magnet that becomes the multipolar magnet 14 does not necessarily have to be a sintered body of the magnetic powder alone, and may be a sintered magnet of a powder obtained by mixing the magnetic powder and another material. good.
【００３３】多極磁石１４を焼結磁石とする場合、フェ
ライト磁石とする場合は、フェライトが酸化鉄であって
錆の問題がないが、ネオジウム（Ｎｄ）系又はサマリウ
ム系（Ｓｍ）の希土類磁石を使用する場合は、防錆対策
をする必要がある。防錆対策としては、例えば図９
（Ａ）に示すように、多極磁石１４を含む磁気エンコー
ダ２０の全体を防錆処理層３０で覆うようにしても、ま
た同図（Ｂ）のように多極磁石１４のみを防錆処理層３
０で覆うようにしても良い。多極磁石１４を取付ける部
材がシール板１１である場合、および図７の例のような
保護板１８である場合のいずれであっても、これらの防
錆処理層３０が適用できる。防錆処理層３０は、メッキ
やコーティングなど、各種のものが採用できる。金属メ
ッキ層は、例えば亜鉛メッキ、ニッケルメッキ、または
亜鉛−ニッケルメッキ等が採用できる。防錆処理層３０
を金属メッキ層とすると、防錆処理層３０の弾性変形で
第１のシール板１１や保護板１８の嵌合部における嵌合
力が低下することが防止される。そのため、金属メッキ
層とすることが好ましい。また、亜鉛やニッケルのメッ
キとすると、安価に防錆性の高いメッキが行える。防錆
対策としては、防錆処理層３０を設ける代わりに、例え
ば第１の実施形態の変形例として図８と共に前述したよ
うに、第１のシール板１１と保護板１８とで焼結磁石製
の多極磁石１４を密封するようにしても良い。When the multipole magnet 14 is a sintered magnet or a ferrite magnet, the ferrite is iron oxide and there is no problem of rust, but a neodymium (Nd) or samarium (Sm) rare earth magnet is used. When using, it is necessary to take measures against rust. As an anti-rust measure, for example, FIG.
As shown in (A), even if the entire magnetic encoder 20 including the multi-pole magnet 14 is covered with the rust-proofing layer 30, only the multi-pole magnet 14 is rust-proofed as shown in FIG. Layer 3
You may make it cover with 0. The rustproofing layer 30 can be applied to the case where the member to which the multipolar magnet 14 is attached is the seal plate 11 and the case where the member is the protective plate 18 as shown in FIG. Various kinds of materials such as plating and coating can be adopted as the rust prevention treatment layer 30. As the metal plating layer, for example, zinc plating, nickel plating, zinc-nickel plating, or the like can be adopted. Rust prevention treatment layer 30
Is a metal plating layer, it is possible to prevent the fitting force at the fitting portion of the first seal plate 11 or the protection plate 18 from being reduced due to the elastic deformation of the rust-proofing layer 30. Therefore, it is preferable to use a metal plating layer. Further, when zinc or nickel is plated, plating with high rust prevention can be performed at low cost. As a countermeasure against rust, instead of providing the rust prevention treatment layer 30, for example, as described above with reference to FIG. 8 as a modification of the first embodiment, the first seal plate 11 and the protection plate 18 are made of a sintered magnet. May be sealed.
【００３４】[0034]
【発明の効果】この発明における第１の発明の車輪用軸
受は、磁気エンコーダとなる多極磁石の外方側を非磁性
体製の保護板で被覆したため、多極磁石と、この多極磁
石から回転数を検出する磁気センサとの隙間に異物が噛
み込むことがあっても、多極磁石が損傷することが防止
される。また、この発明における第２の発明の車輪用軸
受は、断面Ｌ字状の保護板の立板部を、スリンガとなる
断面Ｌ字状の第１のシール板の立板部に対向させ、この
保護板の立板部の内側面に磁気エンコーダとなる多極磁
石を接着したため、多極磁石と磁気センサとの隙間に異
物が噛み込んでも、多極磁石が損傷することが防止され
る。In the wheel bearing according to the first aspect of the present invention, since the outer side of the multi-pole magnet serving as the magnetic encoder is covered with a protective plate made of a non-magnetic material, the multi-pole magnet and the multi-pole magnet Even if a foreign substance bites into a gap between the magnetic sensor and the magnetic sensor that detects the rotation speed, damage to the multipolar magnet is prevented. Further, in the wheel bearing according to the second aspect of the present invention, the upright portion of the protection plate having an L-shaped cross section is opposed to the upright portion of the first seal plate having an L-shaped cross section to be a slinger. Since the multi-pole magnet serving as the magnetic encoder is bonded to the inner surface of the upright portion of the protection plate, the multi-pole magnet is prevented from being damaged even if a foreign substance is caught in the gap between the multi-pole magnet and the magnetic sensor.
【図１】この発明の一実施形態にかかる車輪用軸受を設
置した車輪支持装置の断面図である。FIG. 1 is a cross-sectional view of a wheel support device provided with a wheel bearing according to an embodiment of the present invention.
【図２】その磁気エンコーダとなる多極磁石の部分正面
図である。FIG. 2 is a partial front view of a multipolar magnet serving as the magnetic encoder.
【図３】同車輪用軸受の部分断面図である。FIG. 3 is a partial sectional view of the wheel bearing.
【図４】この発明の他の実施形態にかかる車輪用軸受の
部分断面図である。FIG. 4 is a partial cross-sectional view of a wheel bearing according to another embodiment of the present invention.
【図５】この発明のさらに他の実施形態にかかる車輪用
軸受の部分断面図である。FIG. 5 is a partial sectional view of a wheel bearing according to still another embodiment of the present invention.
【図６】この発明のさらに他の実施形態にかかる車輪用
軸受の部分断面図である。FIG. 6 is a partial cross-sectional view of a wheel bearing according to still another embodiment of the present invention.
【図７】この発明のさらに他の実施形態にかかる車輪用
軸受の部分断面図である。FIG. 7 is a partial sectional view of a wheel bearing according to still another embodiment of the present invention.
【図８】この発明のさらに他の実施形態にかかる車輪用
軸受の部分断面図である。FIG. 8 is a partial sectional view of a wheel bearing according to still another embodiment of the present invention.
【図９】（Ａ），（Ｂ）はそれぞれ車輪用軸受の保護板
およびエンコーダの各変形例を示す断面図である。FIGS. 9A and 9B are cross-sectional views showing modifications of the protection plate and the encoder of the wheel bearing, respectively.
【図１０】従来例の部分断面図である。FIG. 10 is a partial sectional view of a conventional example.
１…内方部材 ２…外方部材 ３…転動体 ５…シール装置 １１…第１のシール装置 １２…第２のシール装置 １１ａ，１２ａ…円筒部 １１ｂ，１２ｂ…立板部 １４…多極磁石 １６ａ…サイドリップ １６ｂ，１６ｃ…ラジアルリップ １８…保護板 １８ａ…円筒部 １８ｂ…立板部 ２１…シールリップ（弾性部材） DESCRIPTION OF SYMBOLS 1 ... Inner member 2 ... Outer member 3 ... Roller element 5 ... Seal device 11 ... First seal device 12 ... Second seal device 11a, 12a ... Cylindrical part 11b, 12b ... Standing plate part 14 ... Multipole magnet 16a: Side lip 16b, 16c: Radial lip 18: Protective plate 18a: Cylindrical part 18b: Standing plate part 21: Seal lip (elastic member)
───────────────────────────────────────────────────── フロントページの続き Ｆターム(参考） 3J016 AA02 AA03 BB03 BB16 CA02 CA03 3J101 AA02 AA32 AA43 AA54 AA62 EA74 EA75 FA23 FA31 GA03 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 3J016 AA02 AA03 BB03 BB16 CA02 CA03 3J101 AA02 AA32 AA43 AA54 AA62 EA74 EA75 FA23 FA31 GA03
Claims (10)
の部材間に収容される複数の転動体と、上記内外の部材
間の環状空間の端部を密封するシール装置とからなる車
輪用軸受であって、 上記シール装置は、上記内方部材と外方部材のうちの互
いに異なる部材に各々取付けられた第１および第２の環
状のシール板を有し、両シール板は、各々円筒部と立板
部とでなる断面Ｌ字状に形成されて互いに対向し、第１
のシール板は上記内方部材および外方部材のうちの回転
側部材に嵌合され、立板部は軸受の外方側に配されると
共に、周方向に交互に磁極が形成された多極磁石が取付
けられ、第２のシール板は上記立板部に摺接するサイド
リップと円筒部に摺接するラジアルリップとを一体に有
し、この第２のシール板の円筒部と上記第１のシール板
の立板部の先端とを僅かな径方向隙間をもって対峙させ
た車輪用軸受において、 上記多極磁石の外方側を非磁性体製の保護板で被覆した
ことを特徴とする車輪用軸受。1. A wheel comprising: an inner member and an outer member; a plurality of rolling elements housed between the inner and outer members; and a sealing device for sealing an end of an annular space between the inner and outer members. A bearing, wherein the seal device has first and second annular seal plates respectively attached to mutually different members of the inner member and the outer member, and both seal plates are cylindrical. The first portion and the vertical plate portion are formed in an L-shaped cross section and face each other.
The seal plate is fitted to the rotating side member of the inner member and the outer member, and the upright plate portion is arranged on the outer side of the bearing, and the magnetic poles are alternately formed in the circumferential direction. A magnet is mounted, and the second seal plate integrally has a side lip slidingly contacting the upright plate portion and a radial lip slidingly contacting the cylindrical portion, and the cylindrical portion of the second seal plate and the first seal. A wheel bearing in which a tip of an upright portion of a plate is opposed with a slight radial gap, wherein the outer side of the multipole magnet is covered with a protection plate made of a non-magnetic material. .
弾性部材またはプラスチックである請求項１に記載の車
輪用軸受。2. The wheel bearing according to claim 1, wherein the multipolar magnet is an elastic member or a plastic mixed with a magnetic powder.
項１に記載の車輪用軸受。3. The wheel bearing according to claim 1, wherein the multipolar magnet is made of a sintered magnet.
部材のうちの回転側の部材に取付けられている請求項１
ないし請求項３のいずれかに記載の車輪用軸受。4. The protection plate according to claim 1, wherein the protection plate is attached to a rotating member of the inner member and the outer member.
4. The wheel bearing according to claim 3.
外の部材間に収容される複数の転動体と、上記内外の部
材間の環状空間の端部を密封するシール装置とからなる
車輪用軸受であって、 上記シール装置は、上記内方部材と外方部材のうちの互
いに異なる部材に各々取付けられた第１および第２の環
状のシール板を有し、両シール板は、各々円筒部と立板
部とでなる断面Ｌ字状に形成されて互いに対向し、第１
のシール板は上記内方部材に嵌合され、立板部は軸受の
外方側に配されると共に、周方向に交互に磁極が形成さ
れた多極磁石が取付けられ、第２のシール板は上記立板
部に摺接するサイドリップと円筒部に摺接するラジアル
リップとを一体に有し、この第２のシール板の円筒部と
上記第１のシール板の立板部の先端とを僅かな径方向隙
間をもって対峙させた請求項１ないし請求項４のいずれ
かに記載の車輪用軸受。5. A wheel comprising an inner member and an outer member, a plurality of rolling elements housed between the inner and outer members, and a seal device for sealing an end of an annular space between the inner and outer members. A sealing device, wherein the sealing device has first and second annular seal plates respectively attached to different ones of the inner member and the outer member. The first portion is formed in an L-shaped cross section including a cylindrical portion and an upright portion, and faces each other.
The seal plate is fitted to the inner member, the upright plate portion is disposed on the outer side of the bearing, and a multipolar magnet having magnetic poles formed alternately in the circumferential direction is attached to the seal plate. Has a side lip that slides on the upright portion and a radial lip that slides on the cylindrical portion. The cylindrical portion of the second seal plate and the tip of the upright portion of the first seal plate are slightly separated from each other. The wheel bearing according to any one of claims 1 to 4, wherein the wheel bearings face each other with a large radial gap.
極磁石を被覆する立板部と、上記内方部材および外方部
材のうちの回転側部材に嵌合する円筒部とからなり、こ
の円筒部に上記第１のシール板を嵌合させた請求項１な
いし請求項５のいずれかに記載の車輪用軸受。6. The protection plate has an L-shaped cross section, and includes an upright plate portion that covers the multipole magnet and a cylindrical portion that fits into a rotation-side member of the inner member and the outer member. The wheel bearing according to any one of claims 1 to 5, wherein the first seal plate is fitted into the cylindrical portion.
部材のうちの回転側部材との嵌合部に密封用の弾性部材
を介在させた請求項６に記載の車輪用軸受。7. The wheel bearing according to claim 6, wherein an elastic member for sealing is interposed in a fitting portion between the protection plate and a rotation side member of the inner member and the outer member.
板の立板部外径縁に係止させた請求項１ないし請求項５
のいずれかに記載の車輪用軸受。8. An outer diameter edge of the protection plate is locked to an outer diameter edge of the upright portion of the first seal plate.
The wheel bearing according to any one of the above.
シール板の立板部とで挟持した状態で、これら保護板お
よび立板部に接着した請求項１ないし請求項５のいずれ
かに記載の車輪用軸受。9. The protection plate and the upright portion of the first seal plate, wherein the multipole magnet is held between the upright portion of the first seal plate and the protection plate. A wheel bearing according to any of the claims.
内外の部材間に収容される複数の転動体と、上記内外の
部材間の環状空間の端部を密封するシール装置とからな
る車輪用軸受であって、 上記シール装置は、上記内方部材と外方部材のうちの互
いに異なる部材に各々取付けられた第１および第２の環
状のシール板を有し、両シール板は、各々円筒部と立板
部とでなる断面Ｌ字状に形成されて互いに対向し、上記
第１のシール板の立板部は軸受の外方側に配され、上記
第２のシール板は上記立板部に摺接するサイドリップと
円筒部に摺接するラジアルリップとを一体に有し、この
第２のシール板の円筒部と上記第１のシール板の立板部
の先端とを僅かな径方向隙間をもって対峙させると共
に、上記第１のシール板の立板部に断面Ｌ字状の保護板
を対向させ、この保護板の立板部の内側面に、周方向に
交互に磁極が形成された多極磁石を取付け、上記保護板
の円筒部を、上記内方部材および外方部材のうちの回転
側部材に嵌合すると共に、この円筒部に上記第１のシー
ル板の円筒部をさらに嵌合させたことを特徴とする車輪
用軸受。10. A wheel comprising an inner member and an outer member, a plurality of rolling elements housed between the inner and outer members, and a seal device for sealing an end of an annular space between the inner and outer members. A sealing device, wherein the sealing device has first and second annular seal plates respectively attached to different ones of the inner member and the outer member. The first seal plate is formed to have an L-shaped cross section formed of a cylindrical portion and an upright plate portion, and faces each other. The upright plate portion of the first seal plate is disposed outside a bearing, and the second seal plate is provided upright. A side lip slidingly contacting the plate portion and a radial lip slidingly contacting the cylindrical portion are integrally formed, and the cylindrical portion of the second seal plate and the tip of the standing plate portion of the first seal plate are slightly radially moved. While facing each other with a gap, an L-shaped cross section is held on the upright portion of the first seal plate. The multi-pole magnet having magnetic poles alternately formed in the circumferential direction is attached to the inner surface of the standing plate portion of the protection plate, and the cylindrical portion of the protection plate is attached to the inner member and the outer member. A wheel bearing, wherein the cylindrical portion of the first seal plate is further fitted into the cylindrical portion while being fitted to the rotating side member.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001327554A JP4278324B2 (en) | 2001-03-07 | 2001-10-25 | Wheel bearing |
| US10/090,752 US6692153B2 (en) | 2001-03-07 | 2002-03-06 | Wheel support bearing assembly |
| US10/734,250 US6939050B2 (en) | 2001-03-07 | 2003-12-15 | Wheel support bearing assembly |
| US11/189,801 US7147379B2 (en) | 2001-03-07 | 2005-07-27 | Wheel support bearing assembly |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001-62986 | 2001-03-07 | ||
| JP2001062986 | 2001-03-07 | ||
| JP2001327554A JP4278324B2 (en) | 2001-03-07 | 2001-10-25 | Wheel bearing |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2004359220A Division JP2005140334A (en) | 2001-03-07 | 2004-12-10 | Bearing with magnetic encoder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2002333033A true JP2002333033A (en) | 2002-11-22 |
| JP4278324B2 JP4278324B2 (en) | 2009-06-10 |
Family
ID=26610746
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001327554A Expired - Fee Related JP4278324B2 (en) | 2001-03-07 | 2001-10-25 | Wheel bearing |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4278324B2 (en) |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004332831A (en) * | 2003-05-08 | 2004-11-25 | Nsk Ltd | Rolling bearing unit for supporting wheel |
| JP2005042817A (en) * | 2003-07-22 | 2005-02-17 | Nok Corp | Sealing device with encoder |
| JP2005249791A (en) * | 2004-03-03 | 2005-09-15 | Carl Freudenberg Kg | Angle measuring device |
| WO2006027845A1 (en) * | 2004-09-10 | 2006-03-16 | Ntn Corporation | Magnetic encoder and bearing for wheel comprising same |
| JP2006214895A (en) * | 2005-02-04 | 2006-08-17 | Nsk Ltd | Magnetic encoder and rolling bearing unit |
| JP2006330004A (en) * | 2006-09-01 | 2006-12-07 | Ntn Corp | Magnetic encoder and bearing for wheel equipped with the same |
| JP2006330005A (en) * | 2006-09-01 | 2006-12-07 | Ntn Corp | Magnetic encoder and bearing for wheel equipped with the same |
| JP2007108092A (en) * | 2005-10-17 | 2007-04-26 | Uchiyama Mfg Corp | Tone wheel with protective cover |
| US7232129B2 (en) | 2004-10-12 | 2007-06-19 | Nok Corporation | Sealing apparatus with encoder |
| JP2007285514A (en) * | 2006-03-22 | 2007-11-01 | Nsk Ltd | Deep groove type ball bearing with encoder |
| JP2008267423A (en) * | 2007-04-17 | 2008-11-06 | Uchiyama Mfg Corp | Bearing seal |
| WO2009011340A1 (en) | 2007-07-17 | 2009-01-22 | Nsk Ltd. | Hub unit bearing |
| JP2009063529A (en) * | 2007-09-10 | 2009-03-26 | Ntn Corp | Wheel bearing device with rotating speed detector |
| WO2009054449A1 (en) | 2007-10-23 | 2009-04-30 | Jtekt Corporation | Protecting cover, and wheel roller-bearing device having the protective cover |
| CN110500361A (en) * | 2019-07-25 | 2019-11-26 | 浙江万向精工有限公司 | Hub-bearing unit combined seal structure |
-
2001
- 2001-10-25 JP JP2001327554A patent/JP4278324B2/en not_active Expired - Fee Related
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004332831A (en) * | 2003-05-08 | 2004-11-25 | Nsk Ltd | Rolling bearing unit for supporting wheel |
| JP2005042817A (en) * | 2003-07-22 | 2005-02-17 | Nok Corp | Sealing device with encoder |
| JP2005249791A (en) * | 2004-03-03 | 2005-09-15 | Carl Freudenberg Kg | Angle measuring device |
| WO2006027845A1 (en) * | 2004-09-10 | 2006-03-16 | Ntn Corporation | Magnetic encoder and bearing for wheel comprising same |
| US7592799B2 (en) | 2004-09-10 | 2009-09-22 | Ntn Corporation | Magnetic encoder and wheel support bearing assembly using the same |
| US7232129B2 (en) | 2004-10-12 | 2007-06-19 | Nok Corporation | Sealing apparatus with encoder |
| JP2006214895A (en) * | 2005-02-04 | 2006-08-17 | Nsk Ltd | Magnetic encoder and rolling bearing unit |
| JP2007108092A (en) * | 2005-10-17 | 2007-04-26 | Uchiyama Mfg Corp | Tone wheel with protective cover |
| JP2007285514A (en) * | 2006-03-22 | 2007-11-01 | Nsk Ltd | Deep groove type ball bearing with encoder |
| JP2006330005A (en) * | 2006-09-01 | 2006-12-07 | Ntn Corp | Magnetic encoder and bearing for wheel equipped with the same |
| JP2006330004A (en) * | 2006-09-01 | 2006-12-07 | Ntn Corp | Magnetic encoder and bearing for wheel equipped with the same |
| JP4498330B2 (en) * | 2006-09-01 | 2010-07-07 | Ｎｔｎ株式会社 | Magnetic encoder and wheel bearing provided with the same |
| JP2008267423A (en) * | 2007-04-17 | 2008-11-06 | Uchiyama Mfg Corp | Bearing seal |
| WO2009011340A1 (en) | 2007-07-17 | 2009-01-22 | Nsk Ltd. | Hub unit bearing |
| US8419288B2 (en) | 2007-07-17 | 2013-04-16 | Nsk Ltd. | Hub unit bearing |
| JP2009063529A (en) * | 2007-09-10 | 2009-03-26 | Ntn Corp | Wheel bearing device with rotating speed detector |
| WO2009054449A1 (en) | 2007-10-23 | 2009-04-30 | Jtekt Corporation | Protecting cover, and wheel roller-bearing device having the protective cover |
| US8356939B2 (en) | 2007-10-23 | 2013-01-22 | Jtekt Corporation | Protective cover and wheel rolling bearing device incorporating the protective cover |
| CN110500361A (en) * | 2019-07-25 | 2019-11-26 | 浙江万向精工有限公司 | Hub-bearing unit combined seal structure |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4278324B2 (en) | 2009-06-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP2000289405A (en) | Combined seal ring with encoder | |
| US20060145686A1 (en) | Rolling bearing unit with rotational speed detecting device | |
| JP4278324B2 (en) | Wheel bearing | |
| JP2002267680A (en) | Bearing for wheel | |
| JP2002316508A (en) | Rotation supporting device for wheel having encoder | |
| JP2004176827A (en) | Protective cap of bearing device for wheel | |
| JP2004270872A (en) | Bearing for wheel | |
| EP1517148B1 (en) | Sealing device and rotation detector | |
| JP5300965B2 (en) | Method of assembling rolling bearing device | |
| JP2001323942A (en) | Sealing device | |
| JP4604421B2 (en) | Rotation support device for wheel with rotation speed detection device and assembly method thereof | |
| JP2005098761A (en) | Rotation detector | |
| JP4867454B2 (en) | SEALING DEVICE WITH MULTI-POLE MAGNET ENCODER Rolling bearing and wheel support bearing unit provided with the sealing device | |
| JP3980371B2 (en) | Wheel bearing | |
| JP2005140334A (en) | Bearing with magnetic encoder | |
| JP2005098332A (en) | Sealing device | |
| JP4239669B2 (en) | Rolling bearing unit for wheel support | |
| JP5061652B2 (en) | Magnetized pulsar ring and sensor-equipped rolling bearing device using the same | |
| JP4218275B2 (en) | Manufacturing method of rolling bearing for axle | |
| JP2009024767A (en) | Bearing device having rotation speed detecting device for use in wheel | |
| JP2002328133A (en) | Bearing for wheel with revolution speed detector | |
| JP2004084925A (en) | Magnetic encoder and wheel bearing provided with encoder | |
| JPH1048230A (en) | Bearing assembly | |
| JP2008094243A (en) | Bearing device for wheel | |
| JP2008267423A (en) | Bearing seal |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20040922 |
|
| A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20061228 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20070710 |
|
| A521 | Written amendment |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20070910 |
|
| A02 | Decision of refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A02 Effective date: 20080205 |
|
| A521 | Written amendment |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20080407 |
|
| A911 | Transfer of reconsideration by examiner before appeal (zenchi) |
Free format text: JAPANESE INTERMEDIATE CODE: A911 Effective date: 20080414 |
|
| A912 | Removal of reconsideration by examiner before appeal (zenchi) |
Free format text: JAPANESE INTERMEDIATE CODE: A912 Effective date: 20080530 |
|
| 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: 20090310 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20120319 Year of fee payment: 3 |
|
| R150 | Certificate of patent or registration of utility model |
Ref document number: 4278324 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R150 Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20120319 Year of fee payment: 3 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20130319 Year of fee payment: 4 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20130319 Year of fee payment: 4 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20140319 Year of fee payment: 5 |
|
| 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 |
|
| 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 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| LAPS | Cancellation because of no payment of annual fees |