JP2007322213A - Bearing unit with rotation sensor - Google Patents

Bearing unit with rotation sensor Download PDF

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Publication number
JP2007322213A
JP2007322213A JP2006151532A JP2006151532A JP2007322213A JP 2007322213 A JP2007322213 A JP 2007322213A JP 2006151532 A JP2006151532 A JP 2006151532A JP 2006151532 A JP2006151532 A JP 2006151532A JP 2007322213 A JP2007322213 A JP 2007322213A
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Japan
Prior art keywords
sensor
fixed
rotation
side mounting
groove
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JP2006151532A
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Japanese (ja)
Inventor
Hiroyoshi Ito
浩義 伊藤
Seiichi Takada
声一 高田
Shoji Itomi
正二 糸見
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NTN Corp
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NTN Corp
NTN Toyo Bearing Co Ltd
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Priority to JP2006151532A priority Critical patent/JP2007322213A/en
Publication of JP2007322213A publication Critical patent/JP2007322213A/en
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C19/00Bearings with rolling contact, for exclusively rotary movement
    • F16C19/02Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
    • F16C19/04Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly
    • F16C19/06Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly with a single row or balls
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C41/00Other accessories, e.g. devices integrated in the bearing not relating to the bearing function as such
    • F16C41/007Encoders, e.g. parts with a plurality of alternating magnetic poles

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  • Transmission And Conversion Of Sensor Element Output (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a magnetic encoder mounting on a rotation wheel, without using a core metal with a simple constitution in order to lower the cost, in a bearing unit compring rotational bearing and a sensor unit. <P>SOLUTION: The rolling bearing 1 is constituted such that on the rotary ring 2 of a seal groove type rotary-side fixing groove 7', and the seal groove type stationary side fixing groove 8' are respectively provided to a fixed wheel 4. The magnetic encoder 3 of single magnetization member 22 is mounted directly to the rotation-side fixing groove 7', and the sensor case 17 of the sensor unit 5 is mounted directly on the stationary-side fixing groove 8'. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

この発明は、各種の回転機器に組み込まれ、回転速度や回転方向を検出するために用いられる回転センサ付き軸受ユニットに関するものである。   The present invention relates to a bearing unit with a rotation sensor that is incorporated in various rotating devices and used to detect a rotation speed and a rotation direction.

回転体の回転速度検出等に用いられる回転センサ付き軸受ユニットとして、従来から図4に示したものが知られている(特許文献1参照)。即ち、図示の回転センサ付き軸受ユニットは、転がり軸受1と、その回転輪(内輪)2に取り付けられた磁気エンコーダ3と、固定輪(外輪)4に取り付けられたセンサユニット5からなる。前記の回転輪2と固定輪4との間に転動体(玉)6が介在される。また、回転輪2と固定輪4の一方の端部において径方向に対向したシール溝7、8が形成され、固定輪4側のシール溝8にシール部材9が装着され、そのシールリップ11が他方のシール溝7に摺接される。   As a bearing unit with a rotation sensor used for detecting the rotational speed of a rotating body, the one shown in FIG. 4 has been known (see Patent Document 1). That is, the illustrated bearing unit with a rotation sensor includes a rolling bearing 1, a magnetic encoder 3 attached to the rotating wheel (inner ring) 2, and a sensor unit 5 attached to a fixed ring (outer ring) 4. A rolling element (ball) 6 is interposed between the rotating wheel 2 and the fixed wheel 4. Further, seal grooves 7 and 8 that are radially opposed to each other at one end of the rotating wheel 2 and the fixed wheel 4 are formed. A seal member 9 is mounted in the seal groove 8 on the fixed wheel 4 side, and the seal lip 11 is The other seal groove 7 is in sliding contact.

通常の転がり軸受においては、前記のシール溝7、8のほかに他方の端部においても同様のシール溝が径方向に対向して設けられ、同様のシール部材が装着されるが、回転センサ付き軸受ユニットにおいて使用される転がり軸受1においては、そのようなシール溝は省略され、図示のように回転輪2と固定輪4の対向面にそれぞれ磁気エンコーダ3とセンサユニット5が取付けられる。   In a normal rolling bearing, in addition to the seal grooves 7 and 8, the other end is provided with a similar seal groove in the radial direction, and a similar seal member is mounted, but with a rotation sensor. In the rolling bearing 1 used in the bearing unit, such a seal groove is omitted, and the magnetic encoder 3 and the sensor unit 5 are respectively attached to the opposing surfaces of the rotating wheel 2 and the fixed wheel 4 as shown in the figure.

前記の磁気エンコーダ3は、環状の芯金12の外径面にゴム磁石等でなる着磁部材13が加硫接着されたものであり、その着磁部材13の外径面の全周にわたりN極とS極が交互に着磁される。着磁面を符号10で示す。また前記芯金12の他端部に逆L字形に屈曲された装着部14が形成され、その装着部14が回転輪2の外径面に圧入固定される。芯金12はプレス加工より所定の形状に成形される。   The magnetic encoder 3 is obtained by vulcanizing and bonding a magnetized member 13 made of a rubber magnet or the like to the outer diameter surface of an annular cored bar 12, and N on the entire circumference of the outer diameter surface of the magnetized member 13. The poles and S poles are alternately magnetized. The magnetized surface is denoted by reference numeral 10. A mounting portion 14 bent in an inverted L shape is formed at the other end portion of the core metal 12, and the mounting portion 14 is press-fitted and fixed to the outer diameter surface of the rotating wheel 2. The cored bar 12 is formed into a predetermined shape by pressing.

また、前記のセンサユニット5は、外環部材16の内径面の全周にわたり樹脂製のセンサケース17が接合され、そのセンサケース17の内径面の一部に磁気センサ18が設けられる。その磁気センサ18が前記の磁気エンコーダ3に対し所定の間隔をおいて径方向に対向している。前記の磁気センサ18は、センサケース17の内部に設けられた樹脂モールド部19にモールドされた基板20に実装される。なお、基板20に接続されたリード線は図示を省略している。   In the sensor unit 5, a resin sensor case 17 is joined over the entire circumference of the inner diameter surface of the outer ring member 16, and a magnetic sensor 18 is provided on a part of the inner diameter surface of the sensor case 17. The magnetic sensor 18 faces the magnetic encoder 3 in the radial direction at a predetermined interval. The magnetic sensor 18 is mounted on a substrate 20 molded in a resin mold part 19 provided inside the sensor case 17. The lead wires connected to the substrate 20 are not shown.

前記の外環部材16の他端部に設けられた逆L字形の装着部21が固定輪4の内径面に圧入固定される。外環部材16もプレス加工により所定の形状に成形される。
特開2002−349556号公報
An inverted L-shaped mounting portion 21 provided at the other end of the outer ring member 16 is press-fitted and fixed to the inner diameter surface of the fixed ring 4. The outer ring member 16 is also formed into a predetermined shape by pressing.
JP 2002-349556 A

前記の回転センサ付き軸受ユニットは、磁気エンコーダ3は芯金12を介して回転輪2に固定され、また、センサユニット5も外環部材16を介して固定輪4に固定されるようになっているため、従来においては、芯金12及び外環部材16が必要部品となっていた。これらの部品はプレス加工によって製作されるので、製品コストが高くなり、また製品重量が大きくなる要因となっていた。さらに、転がり軸受1としては、シール部材9が装着されたシール溝7、8と反対側の端部にシール溝のない汎用性のない回転輪2及び固定輪4が必要となることも、コスト高の一因となっていた。   In the bearing unit with the rotation sensor, the magnetic encoder 3 is fixed to the rotating wheel 2 through the cored bar 12, and the sensor unit 5 is also fixed to the fixed wheel 4 through the outer ring member 16. Therefore, conventionally, the cored bar 12 and the outer ring member 16 have been necessary parts. Since these parts are manufactured by press working, the product cost is increased and the product weight is increased. Furthermore, the rolling bearing 1 requires a non-universal rotating wheel 2 and fixed ring 4 having no seal groove at the end opposite to the seal grooves 7 and 8 in which the seal member 9 is mounted. It contributed to the high.

そこで、この発明は前記の芯金や外環部材が不要であり、また転がり軸受の回転輪及び固定輪も標準品が使用できるようにして製品コストの低減を図ることを課題とする。   SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to reduce the product cost by eliminating the need for the core metal and the outer ring member, and allowing standard products to be used for the rotating and fixed wheels of the rolling bearing.

前記の課題を解決するために、この発明においては、回転輪2と固定輪4との間に転動体6を介在した転がり軸受1と、前記回転輪2に取り付けられた磁気エンコーダ3と、前記固定輪4に取り付けられたセンサユニット5からなり、前記センサユニット5の磁気センサ18を前記磁気エンコーダ3に所要の間隔をおいて対向させてなる回転センサ付き軸受ユニットにおいて、前記回転輪2と固定輪4の端部にそれぞれ径方向に対向したシール溝形の回転側取付け溝7´及び固定側取付け溝8´が形成され、前記磁気エンコーダ3が単独の着磁部材22により構成され、その着磁部材22が前記回転側取付け溝7´に直接装着された構成を採用した。   In order to solve the above problems, in the present invention, a rolling bearing 1 having a rolling element 6 interposed between a rotating wheel 2 and a fixed wheel 4, a magnetic encoder 3 attached to the rotating wheel 2, In a bearing unit with a rotation sensor, comprising a sensor unit 5 attached to a fixed ring 4 and facing a magnetic sensor 18 of the sensor unit 5 with a predetermined interval, the fixed unit is fixed to the rotating wheel 2. A seal groove-shaped rotating side mounting groove 7 'and a fixed side mounting groove 8', which are opposed to each other in the radial direction, are formed at the ends of the ring 4, and the magnetic encoder 3 is constituted by a single magnetized member 22, A configuration in which the magnetic member 22 is directly mounted in the rotation side mounting groove 7 'is employed.

ここで、回転側取付け溝7´及び固定側取付け溝8´が「シール溝形」であるというのは、この転がり軸受1が単独で使用されるとすれば、固定側取付け溝8´にシール部材が装着され、そのシール部材のシールリップが回転側取付け溝7´に摺接するように使用され得るものであること、要するにこれらの溝7´、8´がシール溝として使用され得るものであること意味する。   Here, the rotation-side mounting groove 7 ′ and the fixed-side mounting groove 8 ′ are “seal groove shape”. If the rolling bearing 1 is used alone, the fixed-side mounting groove 8 ′ is sealed. The member is mounted, and the seal lip of the seal member can be used so as to be in sliding contact with the rotation side mounting groove 7 ′. In short, these grooves 7 ′ and 8 ′ can be used as the seal grooves. That means.

なお、前記の固定側取付け溝8´には前記センサユニット5のセンサケース17が直接装着された構成もとることができる。   Note that the sensor case 17 of the sensor unit 5 can be directly mounted in the fixed-side mounting groove 8 ′.

この発明は以上のような構成であるので、磁気エンコーダやセンサユニットの取付け溝は、転がり軸受においてシール溝として加工された溝をそのまま使用することができる。従って、転がり軸受としては通常のシール溝が設けられた汎用タイプのものを使用することができるので、製品コストの低減を図ることができる。また、磁気エンコーダは単独の部品である着磁部材によって形成されるので芯金が不要となり、センサユニットにおいても外環部材が不要となるので、製品コストの一層の低減を図ることができるとともに製品の軽量化を図ることもできる。   Since the present invention is configured as described above, a groove processed as a seal groove in a rolling bearing can be used as it is as a mounting groove for a magnetic encoder or a sensor unit. Therefore, since a general-purpose type bearing provided with a normal seal groove can be used as the rolling bearing, the product cost can be reduced. In addition, since the magnetic encoder is formed by a magnetized member that is a single component, a cored bar is not required, and an outer ring member is also not required in the sensor unit, so that the product cost can be further reduced and the product can be reduced. The weight can be reduced.

以下、添付図面に基づいてこの発明の実施例を説明する。   Embodiments of the present invention will be described below with reference to the accompanying drawings.

[実施例1]
図1に示した実施例1の回転センサ付き軸受ユニットは、従来の場合と同様に転がり軸受1と、その回転輪(内輪)2に取り付けられた磁気エンコーダ3と、固定輪(外輪)4に取り付けられたセンサユニット5からなる。前記の回転輪2の軌道溝2´と固定輪4の軌道溝4´との間に転動体(玉)6が介在される。また、回転輪2と固定輪4の一方の端部において径方向に対向した回転側シール溝7と固定側シール溝8が形成され、固定側シール溝8にシール部材9が装着され、そのシールリップ11が回転側シール溝7に摺接される。
[Example 1]
The rotation sensor-equipped bearing unit of the first embodiment shown in FIG. 1 includes a rolling bearing 1, a magnetic encoder 3 attached to a rotating ring (inner ring) 2, and a fixed ring (outer ring) 4 as in the conventional case. The sensor unit 5 is attached. A rolling element (ball) 6 is interposed between the raceway groove 2 ′ of the rotating wheel 2 and the raceway groove 4 ′ of the fixed ring 4. In addition, a rotation-side seal groove 7 and a fixed-side seal groove 8 facing each other in the radial direction are formed at one end of the rotating wheel 2 and the fixed wheel 4, and a seal member 9 is attached to the fixed-side seal groove 8. The lip 11 is brought into sliding contact with the rotation-side seal groove 7.

前記の回転側シール溝7と固定側シール溝8とそれぞれ軌道溝2´、4´を挟んで反対側の端部においてそれらのシール溝7、8と対称形状の溝が設けられるが、この実施例1においては、それらの溝はシール作用に寄与するものではないので、それぞれ回転側取付け溝7´及び固定側取り付け溝8´と称する。そして、回転側取付け溝7´に磁気エンコーダ3、固定側取付け溝8´にセンサユニット5がそれぞれ取り付けられる。   The rotation-side seal groove 7 and the fixed-side seal groove 8 are provided symmetrically with the seal grooves 7 and 8 at the opposite ends of the raceway grooves 2 'and 4', respectively. In Example 1, since these grooves do not contribute to the sealing action, they are referred to as a rotation side mounting groove 7 'and a fixed side mounting groove 8', respectively. Then, the magnetic encoder 3 is attached to the rotation-side attachment groove 7 ′, and the sensor unit 5 is attached to the fixed-side attachment groove 8 ′.

この場合の磁気エンコーダ3は、磁性粉をゴムによって結合したゴム磁石が使用され、外径面の周方向にN極、S極が交互に現れるように全周に渡り着磁される。着磁面を符号10で示す。このように着磁されたゴム磁石等でなる単独の磁性物体をこの発明においては着磁部材22と称する。磁性粉の材質としては、フェライト、ネオジウム系、サマリウム系などが使用され、また結合剤としては、ニトリルゴム、アクリルゴム、シリコーンゴム、フッ素ゴム等が使用される。   The magnetic encoder 3 in this case uses a rubber magnet in which magnetic powder is bonded with rubber, and is magnetized over the entire circumference so that N poles and S poles appear alternately in the circumferential direction of the outer diameter surface. The magnetized surface is denoted by reference numeral 10. A single magnetic object made of rubber magnets or the like magnetized in this way is called a magnetized member 22 in the present invention. Ferrite, neodymium, samarium, etc. are used as the material of the magnetic powder, and nitrile rubber, acrylic rubber, silicone rubber, fluorine rubber, etc. are used as the binder.

前記の着磁部材22は、図1に示したように、断面形状がほぼ四角形をなした環状の部材であり、その内径面の内端部に全周に渡る突条23が形成される。その突条23の部分が前記の回転側取付け溝7´に所要の嵌め合い代をもって嵌合され軸方向及び径方向に位置決めされる。また、回転側取付け溝7´の外側縁24が着磁部材22の内径面中央部に接しこの部分を内径側から支持することにより着磁部材22の径方向への変形を防止している。   As shown in FIG. 1, the magnetized member 22 is an annular member having a substantially square cross-sectional shape, and a ridge 23 extending over the entire circumference is formed at the inner end of the inner diameter surface. The portion of the protrusion 23 is fitted into the rotation side mounting groove 7 'with a required fitting margin and positioned in the axial direction and the radial direction. Further, the outer edge 24 of the rotation side mounting groove 7 'is in contact with the central portion of the inner diameter surface of the magnetizing member 22, and this portion is supported from the inner diameter side, thereby preventing the magnetizing member 22 from being deformed in the radial direction.

なお、着磁部材22を前記のように嵌め合い代をもって嵌合する固定手段の他に、取付け溝7´の部分に接着剤を塗布する固定手段も併用してもよい。このような併用構造によると、着磁部材22の一層強固な取付けが可能になる。   In addition to the fixing means for fitting the magnetized member 22 with a fitting margin as described above, a fixing means for applying an adhesive to the mounting groove 7 'may be used in combination. According to such a combined structure, the magnetized member 22 can be attached more firmly.

一方、センサユニット5は、環状の熱可塑性樹脂の成形品でなるセンサケース17の一部分に、熱硬化性樹脂の樹脂モールド部19によって基板20がモールドされ、その基板20に実装された磁気センサ18がセンサケース17の内径面に露出し、前記の磁気エンコーダ3の外周面と所要のすき間をおいて径方向に対向する。   On the other hand, in the sensor unit 5, a substrate 20 is molded by a thermosetting resin resin molding portion 19 in a part of a sensor case 17 formed of a molded product of an annular thermoplastic resin, and the magnetic sensor 18 mounted on the substrate 20. Is exposed on the inner diameter surface of the sensor case 17 and faces the outer peripheral surface of the magnetic encoder 3 in the radial direction with a required clearance.

前記のセンサユニット5は、そのセンサケース17の内端外径側のコーナ部を固定側取付け溝8´に圧入することにより固定される。センサケース17は、固定側取付け溝8´の外側縁25と内側壁25´によって径方向及び軸方向に位置決めされる。   The sensor unit 5 is fixed by press-fitting a corner portion on the inner end outer diameter side of the sensor case 17 into the fixed-side mounting groove 8 ′. The sensor case 17 is positioned in the radial direction and the axial direction by the outer edge 25 and the inner wall 25 ′ of the fixed side mounting groove 8 ′.

なお、磁気センサ18から引き出されるリード線は図示を省略している。   The lead wire drawn from the magnetic sensor 18 is not shown.

実施例1の回転センサ付き軸受ユニットは以上のようなものであり、転がり軸受1としては、各軌道溝2´、4´の両側にシール溝を設けた汎用タイプのものが使用され、一方のシール溝、即ち回転側シール溝7と固定側シール溝8にシール部材9が装着される。また、他方のシール溝、即ち回転側取付け溝7´に磁気エンコーダ3が取付けられ、また固定側取付け溝8´にセンサユニット5が取付けられる。   The bearing unit with a rotation sensor of Example 1 is as described above. As the rolling bearing 1, a general-purpose type in which seal grooves are provided on both sides of each raceway groove 2 ′, 4 ′ is used. A seal member 9 is mounted in the seal groove, that is, the rotation-side seal groove 7 and the fixed-side seal groove 8. The magnetic encoder 3 is attached to the other seal groove, that is, the rotation side attachment groove 7 ', and the sensor unit 5 is attached to the fixed side attachment groove 8'.

回転輪2と一体に回転する磁気エンコーダ3の磁気的変化を磁気センサ18が感知して外部に出力される。   The magnetic sensor 18 senses the magnetic change of the magnetic encoder 3 that rotates integrally with the rotating wheel 2 and is output to the outside.

[実施例2乃至4]
図2(a)に示した実施例2は、着磁部材22の断面形状をほぼ三角形に形成したものである。即ち、前記の実施例1の着磁部材22において、突条23の外側から対角コーナに至る傾斜面26を形成したものであり、実施例1の場合に比べ材料が少なく小型化されている。
[Examples 2 to 4]
In Example 2 shown in FIG. 2A, the cross-sectional shape of the magnetized member 22 is formed in a substantially triangular shape. That is, in the magnetized member 22 of the first embodiment, an inclined surface 26 extending from the outer side of the ridge 23 to the diagonal corner is formed, and the material is smaller and smaller than the case of the first embodiment. .

図2(b)に示した実施例3は、前記実施例1の着磁部材22において、その内径面に補強突条27が設けられ、これにより着磁部材22の変形を防ぐようにしたものである。   In the third embodiment shown in FIG. 2B, in the magnetized member 22 of the first embodiment, the reinforcing protrusion 27 is provided on the inner diameter surface thereof, thereby preventing the magnetized member 22 from being deformed. It is.

図2(c)に示した実施例4は、前記実施例3のコーナ部を傾斜面28によってそぎ落し軽量化を図ったものである。   In Example 4 shown in FIG. 2C, the corner portion of Example 3 is scraped off by the inclined surface 28 to reduce the weight.

[実施例5]
以上述べた実施例1から4は、いずれも磁気エンコーダ3の着磁面10と磁気センサ18とが径方向に対向する構成となっているが、図3に示した実施例5のように、着磁面10と磁気センサ18が軸方向に対向するように構成することもできる。
[Example 5]
In each of the first to fourth embodiments described above, the magnetized surface 10 of the magnetic encoder 3 and the magnetic sensor 18 are configured to face each other in the radial direction. However, as in the fifth embodiment illustrated in FIG. The magnetized surface 10 and the magnetic sensor 18 may be configured to face each other in the axial direction.

実施例1の断面図Sectional view of Example 1 (a)実施例2の一部断面図、(b)実施例3の一部断面図、(c)実施例4の一部断面図(A) Partial sectional view of Example 2, (b) Partial sectional view of Example 3, (c) Partial sectional view of Example 4. 実施例5の一部断面図Partial sectional view of Example 5 従来例の一部断面図Partial sectional view of a conventional example

符号の説明Explanation of symbols

1 転がり軸受
2 回転輪
2´ 軌道溝
3 磁気エンコーダ
4 固定輪
4´ 軌道溝
5 センサユニット
6 転動体
7 回転側シール溝
7´ 回転側取付け溝
8 固定側シール溝
8´ 固定側取付け溝
9 シール部材
10 着磁面
11 シールリップ
12 芯金
13 着磁部材
14 装着部
16 外環部材
17 センサケース
18 磁気センサ
19 樹脂モールド部
20 基板
22 着磁部材
23 突条
24 外側縁
25 外側縁
25´ 内側壁
26 傾斜面
27 補強突条
28 傾斜面
DESCRIPTION OF SYMBOLS 1 Rolling bearing 2 Rotating wheel 2 'Track groove 3 Magnetic encoder 4 Fixed ring 4' Track groove 5 Sensor unit 6 Rolling body 7 Rotating side seal groove 7 'Rotating side mounting groove 8 Fixed side sealing groove 8' Fixed side mounting groove 9 Seal Member 10 Magnetized surface 11 Seal lip 12 Core 13 Magnetized member 14 Mounting part 16 Outer ring member 17 Sensor case 18 Magnetic sensor 19 Resin mold part 20 Substrate 22 Magnetized member 23 Projection 24 Outer edge 25 Outer edge 25 'Inside Wall 26 Inclined surface 27 Reinforcement protrusion 28 Inclined surface

Claims (4)

回転輪(2)と固定輪(4)との間に転動体(6)を介在した転がり軸受(1)と、前記回転輪(2)に取り付けられた磁気エンコーダ(3)と、前記固定輪(4)に取り付けられたセンサユニット(5)からなり、前記センサユニット(5)の磁気センサ(18)を前記磁気エンコーダ(3)に所要の間隔をおいて対向させてなる回転センサ付き軸受ユニットにおいて、前記回転輪(2)と固定輪(4)の端部にそれぞれ径方向に対向したシール溝形の回転側取付け溝(7´)及び固定側取付け溝(8´)が形成され、前記磁気エンコーダ(3)が単独の着磁部材(22)により構成され、その着磁部材(22)が前記回転側取付け溝(7´)に直接装着されたことを特徴とする回転センサ付き軸受ユニット。   A rolling bearing (1) having a rolling element (6) interposed between a rotating wheel (2) and a fixed wheel (4), a magnetic encoder (3) attached to the rotating wheel (2), and the fixed wheel A bearing unit with a rotation sensor comprising a sensor unit (5) attached to (4), wherein the magnetic sensor (18) of the sensor unit (5) is opposed to the magnetic encoder (3) at a predetermined interval. The rotary ring (2 ') and the fixed ring (4) are respectively provided with seal groove-shaped rotary side mounting grooves (7') and fixed side mounting grooves (8 ') opposed to each other in the radial direction, A magnetic sensor (3) is constituted by a single magnetized member (22), and the magnetized member (22) is directly mounted in the rotation side mounting groove (7 '), and a bearing unit with a rotation sensor is provided. . 前記着磁部材(22)がゴム磁石により形成され、該着磁部材(22)が所要の嵌め合い代をもって前記回転側取付け溝(7´)に装着されたことを特徴とする請求項1に記載の回転センサ付き軸受ユニット。   The magnetized member (22) is formed of a rubber magnet, and the magnetized member (22) is mounted in the rotating side mounting groove (7 ') with a required fitting margin. The bearing unit with a rotation sensor as described. 前記着磁部材(22)が前記回転側取付け溝(7´)に接着剤を使用して装着されたことを特徴とする請求項1又は2に記載の回転センサ付き軸受ユニット。   The bearing unit with a rotation sensor according to claim 1 or 2, wherein the magnetized member (22) is attached to the rotation side mounting groove (7 ') using an adhesive. 前記固定側取付け溝(8´)に前記センサユニット(5)のセンサケース(17)が直接装着されたことを特徴とする請求項1から3のいずれかに記載の回転センサ付き軸受ユニット。   The bearing unit with a rotation sensor according to any one of claims 1 to 3, wherein a sensor case (17) of the sensor unit (5) is directly attached to the fixed side mounting groove (8 ').
JP2006151532A 2006-05-31 2006-05-31 Bearing unit with rotation sensor Pending JP2007322213A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2006151532A JP2007322213A (en) 2006-05-31 2006-05-31 Bearing unit with rotation sensor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2006151532A JP2007322213A (en) 2006-05-31 2006-05-31 Bearing unit with rotation sensor

Publications (1)

Publication Number Publication Date
JP2007322213A true JP2007322213A (en) 2007-12-13

Family

ID=38855173

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2006151532A Pending JP2007322213A (en) 2006-05-31 2006-05-31 Bearing unit with rotation sensor

Country Status (1)

Country Link
JP (1) JP2007322213A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010013411A1 (en) * 2008-07-28 2010-02-04 Ntn株式会社 Bearing device adapted for use in wheel and equipped with rotation sensing device
JP2010043907A (en) * 2008-08-11 2010-02-25 Ntn Corp Wheel bearing device with rotation detector

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010013411A1 (en) * 2008-07-28 2010-02-04 Ntn株式会社 Bearing device adapted for use in wheel and equipped with rotation sensing device
JP2010043907A (en) * 2008-08-11 2010-02-25 Ntn Corp Wheel bearing device with rotation detector

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