JP2008122269A - Bearing with rotation detecting device - Google Patents

Bearing with rotation detecting device Download PDF

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JP2008122269A
JP2008122269A JP2006307603A JP2006307603A JP2008122269A JP 2008122269 A JP2008122269 A JP 2008122269A JP 2006307603 A JP2006307603 A JP 2006307603A JP 2006307603 A JP2006307603 A JP 2006307603A JP 2008122269 A JP2008122269 A JP 2008122269A
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sensor unit
sensor
unit mounting
bearing
outer ring
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Toru Takahashi
亨 高橋
Tomoumi Ishikawa
智海 石川
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NTN Corp
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NTN Corp
NTN Toyo Bearing Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a bearing with a rotation detection device, having enlarged applicable usage and regions, and high versatility. <P>SOLUTION: In this bearing with rotation detecting device, a magnet 2 is mounted on the rotation center O of an inner ring 21 of a rolling bearing 20, wherein a rotating shaft 10 is pressed into the inner ring 21, and a sensor 3, having a plurality of magnetometric sensor elements facing to the magnet 2 for detecting the rotation angle of the magnet 2 is provided on an outer ring 22 of the rolling bearing 20. A ring-shaped sensor unit mounting member 9 is provided on the outer ring 22. A sensor unit 7, having the sensor 3 and a sensor fixing member 6 where the sensor 3 is mounted, is mounted on the outer ring 22 via the sensor unit mounting member 9. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

この発明は、各種の機器における回転検出、例えば小型モータの回転制御のための回転検出や、事務機器の位置検出のための回転検出、ロボットの関節角度の検出等に用いられる回転検出装置付き軸受に関する。   The present invention relates to a bearing with a rotation detection device used for rotation detection in various devices, for example, rotation detection for rotation control of a small motor, rotation detection for position detection of office equipment, detection of a joint angle of a robot, etc. About.

ロボットの関節等の回転あるいは角度を検出するために、関節部の軸を支持するための軸受と一体となった回転検出装置付き軸受が設置される。このような回転検出装置付き軸受は、小型であることが望まれ、特に、ロボットの指などの関節に装着する場合には、より小型であることが望まれる。このような要請に応えるために、図１３に示すような回転検出装置付き軸受が提案されている（例えば特許文献１）。   In order to detect the rotation or angle of a robot joint or the like, a bearing with a rotation detector integrated with a bearing for supporting the shaft of the joint is installed. Such a bearing with a rotation detection device is desired to be small, and in particular when mounted on a joint such as a finger of a robot, it is desired to be smaller. In order to meet such a demand, a bearing with a rotation detection device as shown in FIG. 13 has been proposed (for example, Patent Document 1).

同図の回転検出装置付き軸受は、回転輪である内輪５１側に回転中心回りの方向性を有する磁気発生手段３２を配置すると共に、固定輪である外輪５２側に、前記磁気発生手段３２の磁気を検出する磁気ラインセンサ３３を、磁気発生手段３２に対向して配置したものである。磁気発生手段３２は永久磁石３２Ａと磁性体ヨーク３２Ｂとでなり、内輪５１の外径面に圧入嵌合される磁気発生手段取付部材４５を介して内輪５１に取付けられる。回転軸４０と内輪５１は一体となって回転するので、磁気発生手段３２も磁気発生手段取付部材４５と共に回転軸４０と一体となって回転する。磁気ラインセンサ３３は、外輪５２の内径面に圧入嵌合されるセンサ取付部材５７を介して外輪５２に取付けられる。
特開２００４−３７１３３号公報 In the bearing with a rotation detection device shown in the figure, the magnetism generating means 32 having a direction around the center of rotation is arranged on the inner ring 51 side which is a rotating wheel, and the magnetism generating means 32 is arranged on the outer ring 52 side which is a fixed ring. A magnetic line sensor 33 for detecting magnetism is arranged opposite to the magnetism generating means 32. The magnetism generating means 32 includes a permanent magnet 32A and a magnetic yoke 32B, and is attached to the inner ring 51 via a magnetizing means attaching member 45 that is press-fitted into the outer diameter surface of the inner ring 51. Since the rotating shaft 40 and the inner ring 51 rotate integrally, the magnetism generating means 32 also rotates together with the rotating shaft 40 together with the magnetism generating means mounting member 45. The magnetic line sensor 33 is attached to the outer ring 52 via a sensor attachment member 57 that is press-fitted to the inner diameter surface of the outer ring 52.
JP 2004-37133 A

しかし、上記構成の回転検出装置付き軸受では、軸受の片側端面に回転センサ３３が設けられているため、軸受の内輪に回転軸を圧入する場合、内輪を治具などで支持して圧入することが困難であり、適用できる用途、部位が限られてしまう。   However, in the bearing with the rotation detection device having the above-described configuration, the rotation sensor 33 is provided on one end face of the bearing. Therefore, when the rotary shaft is press-fitted into the inner ring of the bearing, the inner ring is supported by a jig or the like. Is difficult, and applicable applications and parts are limited.

この発明の目的は、上記課題を解決して、汎用性の高い回転検出装置付き軸受を提供することである。   An object of the present invention is to solve the above problems and provide a highly versatile bearing with a rotation detection device.

この発明の回転検出装置付き軸受は、内輪に回転軸が圧入される転がり軸受における前記内輪の回転中心に磁石を取付け、この磁石に対向する複数の磁気センサ素子を有し前記磁石の回転角度を検出するセンサを前記転がり軸受の外輪に設けた回転検出装置付き軸受であって、前記外輪に環状のセンサユニット取付部材を設け、前記センサおよびこのセンサが取付けられたセンサ固定部材を有するセンサユニットを、前記外輪に前記センサユニット取付部材を介して取付けたことを特徴とする。前記センサとしては、磁気ラインセンサ等の磁気アレイセンサや、磁気式の２次元ベクトルセンサ等を用いることができる。
この構成によると、外輪に環状のセンサユニット取付部材を設け、前記センサユニットを、外輪に前記センサユニット取付部材を介して取付けるようにしたため、転がり軸受の内輪に回転軸を圧入する場合、センサユニットに妨げられることなく、内輪を治具などで支持して圧入することができる。そのため、適用できる用途、部位が拡大し、汎用性の高い回転検出装置付き軸受とすることができる。 The bearing with a rotation detector of the present invention has a magnet attached to the rotation center of the inner ring in a rolling bearing in which a rotation shaft is press-fitted into the inner ring, and has a plurality of magnetic sensor elements facing the magnet, and the rotation angle of the magnet is adjusted. A bearing with a rotation detecting device in which a sensor to be detected is provided on an outer ring of the rolling bearing, wherein an annular sensor unit mounting member is provided on the outer ring, and the sensor unit includes the sensor and a sensor fixing member to which the sensor is mounted. The sensor unit mounting member is attached to the outer ring. As the sensor, a magnetic array sensor such as a magnetic line sensor, a magnetic two-dimensional vector sensor, or the like can be used.
According to this configuration, since the annular sensor unit mounting member is provided on the outer ring and the sensor unit is mounted on the outer ring via the sensor unit mounting member, when the rotary shaft is press-fitted into the inner ring of the rolling bearing, the sensor unit The inner ring can be press-fitted with a jig or the like without being obstructed. Therefore, applicable applications and parts can be expanded, and a highly versatile bearing with a rotation detector can be obtained.

この発明において、前記センサユニット取付部材が、前記外輪の内径面に嵌合する外輪嵌合部と、この外輪嵌合部の一端から外径側へ延びて外輪の端面に係合する外輪端面係合部と、この外輪端面係合部の外周部から軸方向へ延びるセンサユニット取付用部とからなり、前記センサユニット取付用部に前記センサユニットが取付けられるものとしても良い。このようにセンサユニット取付部材に前記外輪端面係合部を設けることで、センサユニット取付部材の外輪への位置決めが容易に行える。   In the present invention, the sensor unit mounting member includes an outer ring fitting portion that is fitted to the inner diameter surface of the outer ring, and an outer ring end surface relationship that extends from one end of the outer ring fitting portion to the outer diameter side and engages the end surface of the outer ring. It is good also as what consists of a joint part and the sensor unit attachment part extended in an axial direction from the outer peripheral part of this outer ring end surface engaging part, and the said sensor unit is attached to the said sensor unit attachment part. Thus, by providing the outer ring end surface engaging portion on the sensor unit mounting member, the sensor unit mounting member can be easily positioned on the outer ring.

この発明において、前記センサユニットは、前記センサユニット取付部材に圧入により固定しても良い。圧入によると、センサユニットを簡単に取付けることができる。   In this invention, the sensor unit may be fixed to the sensor unit mounting member by press fitting. By press-fitting, the sensor unit can be easily installed.

この発明において、前記センサユニットの前記センサ固定部材および前記センサユニット取付部材が、互いに嵌合する環状の凹凸部を有し、この凹凸部の嵌合により、前記センサユニットの前記センサ固定部材が前記センサユニット取付部材に取付けられるものであっても良い。上記のように環状の凹凸部で嵌合させるようにすると、簡単に、かつ正確な取付けが行える。   In the present invention, the sensor fixing member and the sensor unit mounting member of the sensor unit have an annular concavo-convex portion that fits to each other, and the sensor fixing member of the sensor unit is moved by the fitting of the concavo-convex portion. It may be attached to the sensor unit attachment member. If it is made to fit in an annular uneven part as mentioned above, it can attach simply and correctly.

この発明において、前記センサユニットの前記センサ固定部材および前記センサユニット取付部材が、互いにねじ込まれるねじ部を有し、このねじ部によって、前記センサユニットの前記センサ固定部材が前記センサユニット取付部材に取付けられるものであっても良い。上記のようにねじ部で取付けるようにすると、センサユニットをセンサユニット取付部材に簡単にかつ堅固に取付けることができる。   In the present invention, the sensor fixing member and the sensor unit mounting member of the sensor unit have screw portions that are screwed together, and the sensor fixing member of the sensor unit is attached to the sensor unit mounting member by the screw portions. May be used. As described above, the sensor unit can be easily and firmly attached to the sensor unit attachment member by being attached by the screw portion.

この発明において、前記センサユニットの前記センサ固定部材は、前記センサユニット取付部材の内径面または外径面に嵌まり合う嵌合部を有し、この嵌合部に設けた止めねじにより、前記センサユニットの前記センサ固定部材が前記センサユニット取付部材に固定されるものであっても良い。上記止めねじを用いた場合も、センサユニットをセンサユニット取付部材に簡単にかつ堅固に取付けることができる。   In this invention, the sensor fixing member of the sensor unit has a fitting portion that fits into an inner diameter surface or an outer diameter surface of the sensor unit mounting member, and the sensor is provided by a set screw provided in the fitting portion. The sensor fixing member of the unit may be fixed to the sensor unit mounting member. Even when the set screw is used, the sensor unit can be easily and firmly attached to the sensor unit attachment member.

この発明において、前記センサユニットの前記センサ固定部材の前記センサユニット取付部材への固定に接着剤を併用しても良い。接着剤を併用すると、より堅固な固定が簡単に行える。   In the present invention, an adhesive may be used together for fixing the sensor fixing member of the sensor unit to the sensor unit mounting member. When an adhesive is used in combination, a firmer fixation can be easily performed.

この発明の回転検出装置付き軸受は、内輪に回転軸が圧入される転がり軸受における前記内輪の回転中心に磁石を取付け、この磁石に対向する複数の磁気センサ素子を有し前記磁石の回転角度を検出するセンサを前記転がり軸受の外輪に設けた回転検出装置付き軸受であって、前記外輪に環状のセンサユニット取付部材を設け、前記センサおよびこのセンサが取付けられたセンサ固定部材を有するセンサユニットを、前記外輪に前記センサユニット取付部材を介して取付けたため、汎用性の高い回転検出装置付き軸受とすることができる。   The bearing with a rotation detector of the present invention has a magnet attached to the rotation center of the inner ring in a rolling bearing in which a rotation shaft is press-fitted into the inner ring, and has a plurality of magnetic sensor elements facing the magnet, and the rotation angle of the magnet is adjusted. A bearing with a rotation detecting device in which a sensor to be detected is provided on an outer ring of the rolling bearing, wherein an annular sensor unit mounting member is provided on the outer ring, and the sensor unit includes the sensor and a sensor fixing member to which the sensor is mounted. Since it is mounted on the outer ring via the sensor unit mounting member, a highly versatile bearing with a rotation detection device can be provided.

この発明の一実施形態を図１ないし図５と共に説明する。図１は、この実施形態の回転検出装置付き軸受の分解断面図を示す。この回転検出装置付き軸受は、転がり軸受２０に回転検出装置１を組み込んだものである。転がり軸受２０は、内輪２１と外輪２２の転走面間に、保持器２３に保持された転動体２４を介在させたものである。転動体２４はボールからなり、この転がり軸受２０は単列の深溝玉軸受とされている。内輪２１には回転軸１０が圧入状態に嵌合される。外輪２２は軸受使用機器のハウジング（図示せず）に設置される。   An embodiment of the present invention will be described with reference to FIGS. FIG. 1 is an exploded cross-sectional view of a bearing with a rotation detection device of this embodiment. This bearing with a rotation detection device is obtained by incorporating the rotation detection device 1 into a rolling bearing 20. The rolling bearing 20 includes a rolling element 24 held by a cage 23 between rolling surfaces of an inner ring 21 and an outer ring 22. The rolling element 24 is formed of a ball, and the rolling bearing 20 is a single row deep groove ball bearing. The rotary shaft 10 is fitted into the inner ring 21 in a press-fit state. The outer ring 22 is installed in a housing (not shown) of a bearing using device.

回転検出装置１は、転がり軸受２０の内輪２１側に配置される磁石２と、外輪２２側に配置され前記磁石２の回転角度を検出するセンサ３とを備える。ここでいう内輪２１側とは、内輪２１または内輪２１と共に回転する部材のことであり、外輪２２側とは外輪２２に固定される部材のことである。   The rotation detection device 1 includes a magnet 2 disposed on the inner ring 21 side of the rolling bearing 20 and a sensor 3 disposed on the outer ring 22 side and detecting the rotation angle of the magnet 2. The inner ring 21 side here is an inner ring 21 or a member that rotates together with the inner ring 21, and the outer ring 22 side is a member that is fixed to the outer ring 22.

磁石２は、ここでは磁石固定部材４を介して内輪２１の回転中心Ｏに取付けられ、その回転中心Ｏの回りの方向性を有する磁気を発生する。磁石固定部材４は、円筒部４ａの周縁にフランジ部４ｂを有する円板状の部材であり、前記フランジ部４ｂが内輪２１のセンサ３側に向く端面に係合するように、前記円筒部４ａを内輪２１の内径面に圧入させることで内輪２１に取付けられる。また、前記フランジ部４ｂが内輪２１の端面に係合することで、磁石固定部材４が軸方向に位置決めされる。磁石２は、磁石固定部材４の円筒部４ａのセンサ３側に向く片面側に圧入等により固定される。   Here, the magnet 2 is attached to the rotation center O of the inner ring 21 via the magnet fixing member 4 and generates magnetism having directionality around the rotation center O. The magnet fixing member 4 is a disk-shaped member having a flange portion 4b on the periphery of the cylindrical portion 4a, and the cylindrical portion 4a is engaged with the end surface of the inner ring 21 facing the sensor 3 side. Is attached to the inner ring 21 by press-fitting into the inner diameter surface of the inner ring 21. Further, when the flange portion 4b is engaged with the end surface of the inner ring 21, the magnet fixing member 4 is positioned in the axial direction. The magnet 2 is fixed to one side of the cylindrical portion 4a of the magnet fixing member 4 facing the sensor 3 by press-fitting or the like.

転がり軸受２０における外輪２２のセンサ３側に向く端部には、環状のセンサユニット取付部材９が設けられる。センサユニット取付部材９は、前記外輪２２の内径面に圧入嵌合する外輪嵌合部９ａと、この外輪嵌合部９ａの一端から外径側へ延びて外輪２２の端面に係合する外輪端面係合部９ｂと、この外輪端面嵌合部９ｂの外周部から軸方向へ延びるセンサユニット取付用部９ｃとからなる。前記外輪端面係合部９ｂが外輪２２の端面に係合することで、センサユニット取付部材９が軸方向に位置決めされる。   An annular sensor unit mounting member 9 is provided at the end of the rolling bearing 20 facing the sensor 3 side of the outer ring 22. The sensor unit mounting member 9 includes an outer ring fitting portion 9 a that is press-fitted to the inner diameter surface of the outer ring 22, and an outer ring end surface that extends from one end of the outer ring fitting portion 9 a to the outer diameter side and engages with the end surface of the outer ring 22. The engaging portion 9b and a sensor unit mounting portion 9c extending in the axial direction from the outer peripheral portion of the outer ring end face fitting portion 9b. When the outer ring end surface engaging portion 9b is engaged with the end surface of the outer ring 22, the sensor unit mounting member 9 is positioned in the axial direction.

センサ３は、前記磁石２の磁気を感知して磁石２の回転角度を検出する手段であり、回路基板５に実装される。センサ３および回路基板５は図１のようにセンサ固定部材６に取付けられ、これらセンサ３、回路基板５、およびセンサ固定部材６によりセンサユニット７が構成される。このセンサユニット７は前記センサユニット取付部材９とは別体であり、センサユニット取付部材９を介して外輪２２に取付けられる。ここでは、前記センサ固定部材６は、円筒部材６ａと、この円筒部材６ａの一端に圧入や螺合などにより結合される円板部材６ｂとでなり、円板部材６ｂの前記磁石２に対向する片面側に前記センサ３および回路基板５が取付けられる。なお、円筒部材６ａと円板部材６ｂを一体の部材としてセンサ固定部材６を構成しても良い。   The sensor 3 is means for detecting the rotation angle of the magnet 2 by sensing the magnetism of the magnet 2, and is mounted on the circuit board 5. The sensor 3 and the circuit board 5 are attached to the sensor fixing member 6 as shown in FIG. 1, and the sensor unit 7 is configured by the sensor 3, the circuit board 5, and the sensor fixing member 6. The sensor unit 7 is separate from the sensor unit attachment member 9 and is attached to the outer ring 22 via the sensor unit attachment member 9. Here, the sensor fixing member 6 includes a cylindrical member 6a and a disk member 6b coupled to one end of the cylindrical member 6a by press-fitting or screwing, and is opposed to the magnet 2 of the disk member 6b. The sensor 3 and the circuit board 5 are attached to one side. In addition, you may comprise the sensor fixing member 6 by making the cylindrical member 6a and the disk member 6b into an integral member.

前記円筒部材６ａは、その他端に外輪２２の内径面に圧入可能な嵌合部８を有する。この嵌合部８は、円筒部材６ａの円筒基部から内径側に縮径した小径の筒部とされ、この嵌合部８を図２のように前記センサユニット取付部材９におけるセンサユニット取付用部９ｃの内径面に圧入することにより、センサユニット７がセンサユニット取付部材９を介して外輪２２に固定される。これにより、センサ３が転がり軸受２０の回転中心Ｏの軸方向に向けて磁石２と対向する。また、前記円筒部材６ａにおける嵌合部８の端面がセンサユニット取付部材９の外輪端面係合部９ｂに係合することにより、あるいは円筒部材６ａにおける嵌合部８から円筒基部へ続く肩部がセンサユニット取付部材９におけるセンサユニット取付用部９ｃの端面に係合することにより、センサユニット７が軸方向に位置決めされる。これにより、磁石２とセンサ３の間の軸方向ギャップが一定に保たれる。センサユニット７は、図１に示すように、内輪２１へ回転軸１０を圧入し、外輪２２へセンサユニット取付部材９を圧入嵌合した後で、上記したようにセンサユニット取付部材９を介して外輪２２に固定される。   The cylindrical member 6 a has a fitting portion 8 that can be press-fitted into the inner surface of the outer ring 22 at the other end. The fitting portion 8 is a small-diameter cylindrical portion having a diameter reduced from the cylindrical base portion of the cylindrical member 6a toward the inner diameter side. The fitting portion 8 is a sensor unit mounting portion in the sensor unit mounting member 9 as shown in FIG. The sensor unit 7 is fixed to the outer ring 22 via the sensor unit mounting member 9 by press-fitting into the inner diameter surface of 9c. Thereby, the sensor 3 faces the magnet 2 toward the axial direction of the rotation center O of the rolling bearing 20. Further, when the end surface of the fitting portion 8 in the cylindrical member 6a is engaged with the outer ring end surface engaging portion 9b of the sensor unit mounting member 9, or a shoulder portion extending from the fitting portion 8 to the cylindrical base portion in the cylindrical member 6a. The sensor unit 7 is positioned in the axial direction by engaging with the end surface of the sensor unit mounting portion 9 c of the sensor unit mounting member 9. Thereby, the axial gap between the magnet 2 and the sensor 3 is kept constant. As shown in FIG. 1, the sensor unit 7 press-fits the rotary shaft 10 into the inner ring 21 and press-fits the sensor unit mounting member 9 into the outer ring 22, and then passes through the sensor unit mounting member 9 as described above. It is fixed to the outer ring 22.

前記センサ３は、図３に平面図で示すように、複数の磁気センサ素子１１ａと、その磁気センサ素子１１ａの出力を回転信号または角度信号に変換する計算手段である変換回路１２とを１つの半導体チップ１３上に集積したものである。半導体チップ１３上において、磁気センサ素子１１ａは、仮想の矩形上の４辺における各辺に沿って配置されて、４辺の磁気ラインセンサ１１Ａ〜１１Ｄとされる。この場合、前記矩形の中心Ｏ’は、転がり軸受２０の回転中心Ｏに一致する。４辺の磁気ラインセンサ１１Ａ〜１１Ｄは、同図の例ではセンサ素子１１ａが一列に並んだものとしているが、センサ素子１１ａが複列に平行に並んだものであっても良い。
なお、センサ３の他の構成として、磁気センサ素子を縦横にマトリクス状に並べた磁気センサアレイを用いても良く、また半導体チップ上の中心の回りに９０°の周回角度を隔てて最低限２つの磁気センサ素子を配置しても良く、２次元ベクトルセンサ等を用いることもできる。 As shown in the plan view of FIG. 3, the sensor 3 includes a plurality of magnetic sensor elements 11a and a conversion circuit 12 that is a calculation means for converting the output of the magnetic sensor elements 11a into a rotation signal or an angle signal. It is integrated on the semiconductor chip 13. On the semiconductor chip 13, the magnetic sensor element 11 a is arranged along each side of the four sides on the virtual rectangle to form the four-side magnetic line sensors 11 </ b> A to 11 </ b> D. In this case, the rectangular center O ′ coincides with the rotational center O of the rolling bearing 20. The four side magnetic line sensors 11A to 11D are arranged such that the sensor elements 11a are arranged in a line in the example of the figure, but the sensor elements 11a may be arranged in parallel in a plurality of lines.
As another configuration of the sensor 3, a magnetic sensor array in which magnetic sensor elements are arranged in a matrix in the vertical and horizontal directions may be used, and at least 2 with a rotation angle of 90 ° around the center on the semiconductor chip. Two magnetic sensor elements may be arranged, and a two-dimensional vector sensor or the like can be used.

このように、この回転検出装置付き軸受では、外輪２２に環状のセンサユニット取付部材９を設けると共に、センサ３、およびこのセンサ３が取付けられたセンサ固定部材６を有するセンサユニット７を前記センサユニット取付部材９とは別体に設け、内輪２１へ回転軸１０を圧入し、外輪２２へ前記センサユニット取付部材９を設けた後に、前記センサユニット７を前記センサユニット取付部材９を介して外輪２２に固定できるようにしているので、センサユニット７に妨げられることなく、内輪２１を治具等で支持して転がり軸受２０の内輪２１への回転軸１０の圧入を行うことができる。その結果、この回転検出装置付き軸受を適用できる用途、部位が拡大し、汎用性の高い回転検出装置付き軸受とすることができる。   As described above, in the bearing with the rotation detecting device, the annular sensor unit mounting member 9 is provided on the outer ring 22 and the sensor unit 7 including the sensor 3 and the sensor fixing member 6 to which the sensor 3 is mounted is provided in the sensor unit. Provided separately from the mounting member 9, the rotary shaft 10 is press-fitted into the inner ring 21, the sensor unit mounting member 9 is provided in the outer ring 22, and then the sensor unit 7 is inserted into the outer ring 22 via the sensor unit mounting member 9. Since the inner ring 21 is supported by a jig or the like, the rotary shaft 10 can be press-fitted into the inner ring 21 of the rolling bearing 20 without being obstructed by the sensor unit 7. As a result, the use and the part which can apply this bearing with a rotation detection apparatus expand, and it can be set as a highly versatile bearing with a rotation detection apparatus.

なお、図１および図２では、磁石固定部材４の円筒部４ａを内輪２１の内径面に圧入することで、磁石固定部材４を介して磁石２を内輪２１に取付けたが、図４に示すように、磁石固定部材４のフランジ部４ｂの外周縁に軸受２０側に延びる大径円筒部４ｂａを別に設け、この大径円筒部４ｂａを内輪２１の外径面に圧入することで、磁石固定部材４を介して磁石２を内輪２１に取付けても良い。また、磁石固定部材４を介在させずに、図５のように、前記センサ３に対向する前記回転軸１０の端面に、圧入等により磁石２を直接固定しても良い。   1 and 2, the magnet 2 is attached to the inner ring 21 via the magnet fixing member 4 by press-fitting the cylindrical portion 4 a of the magnet fixing member 4 into the inner surface of the inner ring 21. As described above, a large-diameter cylindrical portion 4ba extending toward the bearing 20 is separately provided on the outer peripheral edge of the flange portion 4b of the magnet fixing member 4, and the large-diameter cylindrical portion 4ba is press-fitted into the outer diameter surface of the inner ring 21, thereby fixing the magnet. The magnet 2 may be attached to the inner ring 21 via the member 4. Further, the magnet 2 may be directly fixed to the end surface of the rotating shaft 10 facing the sensor 3 by press-fitting or the like, as shown in FIG.

図６は、この発明の他の実施形態を示す。この実施形態の回転検出装置付き軸受では、外輪２２のセンサユニット取付部材９が設けられる一端部での内径面を外輪２２の他部内径面よりも拡径させた段差内径面２２ａとし、この段差内径面２２ａにセンサユニット取付部材９における外輪嵌合部９ａを圧入させることにより、センサユニット取付部材９を外輪２２に取付けている。その他の構成は図２の実施形態の場合と同様である。   FIG. 6 shows another embodiment of the present invention. In the bearing with the rotation detection device of this embodiment, the inner diameter surface at one end where the sensor unit mounting member 9 of the outer ring 22 is provided is a step inner diameter surface 22a having a diameter larger than that of the other inner diameter surface of the outer ring 22. The sensor unit mounting member 9 is attached to the outer ring 22 by press-fitting the outer ring fitting portion 9a of the sensor unit mounting member 9 into the inner diameter surface 22a. Other configurations are the same as those in the embodiment of FIG.

この実施形態の場合、外輪２２の段差内径面２２ａにセンサユニット取付部材９の外輪嵌合部９ａを圧入させているので、センサユニット取付部材９が保持器２３や転動体２４と干渉するのを防止できる。   In the case of this embodiment, since the outer ring fitting portion 9a of the sensor unit mounting member 9 is press-fitted into the step inner diameter surface 22a of the outer ring 22, the sensor unit mounting member 9 interferes with the cage 23 and the rolling element 24. Can be prevented.

図７は、この発明のさらに他の実施形態を示す。この実施形態の回転検出装置付き軸受では、図２の実施形態におけるセンサユニット取付部材９を、外輪２２の外径面に圧入嵌合する外輪嵌合部９Ａａと、この外輪嵌合部９Ａａの一端から内径側へ延びて外輪２２の端面に係合する外輪端面係合部９Ａｂと、この外輪端面係合部９Ａｂの内周部から軸方向へ延びるセンサユニット取付用部９Ａｃとからなるセンサユニット取付部材９Ａに置き換えている。また、図２の実施形態における円筒部材６ａの他端の嵌合部８を、円筒部材６ａの他端の内径面を円筒基部の内径面よりも外径側に拡径させた嵌合部８Ａに置き換えている。この場合、センサユニット取付部材９Ａにおけるセンサユニット取付用部９Ａｃの外径面に、円筒部材６ａの嵌合部８Ａを圧入させることにより、センサユニット取付部材９Ａを介してセンサユニット７が外輪２２に固定される。その他の構成は図２の実施形態の場合と同様である。   FIG. 7 shows still another embodiment of the present invention. In the bearing with rotation detection device of this embodiment, an outer ring fitting portion 9Aa for press-fitting the sensor unit mounting member 9 in the embodiment of FIG. 2 to the outer diameter surface of the outer ring 22, and one end of the outer ring fitting portion 9Aa Sensor unit mounting portion consisting of an outer ring end surface engaging portion 9Ab extending from the inner diameter side to the end surface of the outer ring 22 and a sensor unit mounting portion 9Ac extending in the axial direction from the inner peripheral portion of the outer ring end surface engaging portion 9Ab. The member 9A is replaced. In addition, the fitting portion 8A in which the fitting portion 8 at the other end of the cylindrical member 6a in the embodiment of FIG. 2 is expanded in diameter toward the outer diameter side from the inner diameter surface of the cylindrical base portion. Has been replaced. In this case, the sensor unit 7 is inserted into the outer ring 22 via the sensor unit mounting member 9A by press-fitting the fitting portion 8A of the cylindrical member 6a into the outer diameter surface of the sensor unit mounting portion 9Ac of the sensor unit mounting member 9A. Fixed. Other configurations are the same as those in the embodiment of FIG.

図８は、この発明のさらに他の実施形態を示す。この実施形態の回転検出装置付き軸受では、図７の実施形態における外輪２２のセンサユニット取付部材９Ａが設けられる一端部での外径面を、外輪２２の他部外径面よりも縮径させた段差外径面２２ｂとし、この段差外径面２２ｂにセンサユニット取付部材９Ａにおける外輪嵌合部９Ａａを圧入させることにより、センサユニット取付部材９Ａを外輪２２に取付けている。その他の構成は図７の実施形態の場合と同様である。   FIG. 8 shows still another embodiment of the present invention. In the bearing with rotation detection device of this embodiment, the outer diameter surface at one end where the sensor unit mounting member 9A of the outer ring 22 in the embodiment of FIG. 7 is provided is reduced in diameter than the other outer diameter surface of the outer ring 22. The sensor unit mounting member 9A is attached to the outer ring 22 by pressing the outer ring fitting portion 9Aa of the sensor unit mounting member 9A into the step outer diameter surface 22b. Other configurations are the same as those in the embodiment of FIG.

この実施形態の場合、外輪２２の段差外径面２２ｂにセンサユニット取付部材９Ａの外輪嵌合部９Ａａを圧入させているので、センサユニット取付部材９が外輪２２を覆うハウジング（図示せず）と干渉するのを防止できる。   In this embodiment, since the outer ring fitting portion 9Aa of the sensor unit mounting member 9A is press-fitted into the stepped outer diameter surface 22b of the outer ring 22, a housing (not shown) in which the sensor unit mounting member 9 covers the outer ring 22 and Interference can be prevented.

図９および図１０は、この発明のさらに他の実施形態を示す。この実施形態の回転検出装置付き軸受では、図２の実施形態におけるセンサユニット取付部材９のセンサユニット取付用部９ｃのセンサユニット７側に向く端部の内径面を、図９のように他部内径面よりも外径側に拡径した段差内径面９ｃａとしている。また、図２の実施形態におけるセンサユニット７のセンサ固定部材６を円板部材だけからなる単体のセンサ固定部材６Ａに置き換えている。この場合、センサ固定部材６Ａをセンサユニット取付部材９におけるセンサユニット取付用部９ｃの段差内径面９ｃａに圧入嵌合させることにより、図１０のようにセンサユニット取付部材９を介してセンサユニット７が外輪２２に固定される。その他の構成は、図２の実施形態の場合と同様である。   9 and 10 show still another embodiment of the present invention. In the bearing with the rotation detection device of this embodiment, the inner diameter surface of the end portion of the sensor unit mounting member 9c of the sensor unit mounting member 9 in the embodiment of FIG. A step inner diameter surface 9ca having a diameter that is larger than the inner diameter surface on the outer diameter side. Further, the sensor fixing member 6 of the sensor unit 7 in the embodiment of FIG. 2 is replaced with a single sensor fixing member 6A made of only a disk member. In this case, the sensor fixing member 6A is press-fitted and fitted into the step inner diameter surface 9ca of the sensor unit mounting portion 9c of the sensor unit mounting member 9, so that the sensor unit 7 is interposed via the sensor unit mounting member 9 as shown in FIG. It is fixed to the outer ring 22. Other configurations are the same as those in the embodiment of FIG.

図１１は、この発明のさらに他の実施形態を示す。この実施形態の回転検出装置付き軸受では、図１０の実施形態において、円板部材だけからなる単体のセンサ固定部材６Ａの外周部に、センサユニット取付部材９側に開口する環状の溝６Ａｃを有する嵌合部８Ｂを一体に設けている。この場合、前記センサ固定部材６Ａにおける嵌合部８Ｂの溝６Ａｃの外径面を、センサユニット取付部材９におけるセンサユニット取付用部９ｃの外径面に圧入させることにより、センサユニット取付用部９ｃを介してセンサユニット７が外輪２２に固定される。その他の構成は図１０の場合と略同様である。   FIG. 11 shows still another embodiment of the present invention. In the bearing with the rotation detection device of this embodiment, in the embodiment of FIG. 10, an annular groove 6Ac that opens to the sensor unit mounting member 9 side is provided on the outer periphery of a single sensor fixing member 6 </ b> A made only of a disk member. The fitting portion 8B is provided integrally. In this case, by pressing the outer diameter surface of the groove 6Ac of the fitting portion 8B in the sensor fixing member 6A into the outer diameter surface of the sensor unit mounting portion 9c in the sensor unit mounting member 9, the sensor unit mounting portion 9c. The sensor unit 7 is fixed to the outer ring 22 via Other configurations are substantially the same as those in FIG.

図１２は、この発明のさらに他の実施形態を示す。この実施形態の回転検出装置付き軸受では、図２の実施形態において、センサ固定部材６の一構成部材である円筒部材６ａの嵌合部８の外径面に環状の凹凸部１４を形成すると共に、センサユニット取付部材９におけるセンサユニット取付用部９ｃの内径面に前記凹凸部１４に嵌合する環状の凹凸部１５を形成し、これら凹凸部１４，１５の嵌合によりセンサユニット取付部材９を介してセンサユニット７を外輪２２に取付けている。その他の構成は図２の実施形態の場合と同様である。   FIG. 12 shows still another embodiment of the present invention. In the bearing with the rotation detection device of this embodiment, in the embodiment of FIG. 2, an annular concavo-convex portion 14 is formed on the outer diameter surface of the fitting portion 8 of the cylindrical member 6 a that is a constituent member of the sensor fixing member 6. An annular concavo-convex portion 15 fitted to the concavo-convex portion 14 is formed on the inner diameter surface of the sensor unit attaching portion 9c in the sensor unit attaching member 9, and the sensor unit attaching member 9 is attached by fitting the concavo-convex portions 14 and 15. The sensor unit 7 is attached to the outer ring 22. Other configurations are the same as those in the embodiment of FIG.

図１３は、この発明のさらに他の実施形態を示す。この実施形態の回転検出装置付き軸受では、図１０の実施形態において、センサ固定部材６における外周面に環状の凹凸部１４Ａを形成すると共に、センサユニット取付部材９におけるセンサユニット取付用部９ｃの段差内径面９ｃａに前記凹凸部１４Ａに嵌合する環状の凹凸部１５Ａを形成し、これら凹凸部１４Ａ，１５Ａの嵌合によりセンサユニット取付部材９を介してセンサユニット７を外輪２２に取付けている。その他の構成は図１０の実施形態の場合と同様である。   FIG. 13 shows still another embodiment of the present invention. In the bearing with the rotation detection device of this embodiment, in the embodiment of FIG. 10, an annular uneven portion 14 </ b> A is formed on the outer peripheral surface of the sensor fixing member 6, and the step of the sensor unit mounting portion 9 c in the sensor unit mounting member 9. An annular concavo-convex portion 15A that fits into the concavo-convex portion 14A is formed on the inner diameter surface 9ca, and the sensor unit 7 is attached to the outer ring 22 via the sensor unit attachment member 9 by fitting the concavo-convex portions 14A and 15A. Other configurations are the same as those in the embodiment of FIG.

図１４は、この発明のさらに他の実施形態を示す。この実施形態の回転検出装置付き軸受では、図２の実施形態において、センサ固定部材６の一構成部材である円筒部材６ａの嵌合部８の外径面に雄ねじ部１６を形成すると共に、センサユニット取付部材９におけるセンサユニット取付用部９ｃの内径面に前記凹凸部１６に螺合する雌ねじ部１７を形成し、これら雄ねじ部１６と雌ねじ部１７の螺合によりセンサユニット取付部材９を介してセンサユニット７を外輪２２に取付けている。その他の構成は図２の実施形態の場合と同様である。   FIG. 14 shows still another embodiment of the present invention. In the bearing with the rotation detection device of this embodiment, in the embodiment of FIG. 2, the male screw portion 16 is formed on the outer diameter surface of the fitting portion 8 of the cylindrical member 6a which is a constituent member of the sensor fixing member 6, and the sensor A female thread portion 17 that is screwed into the concave and convex portion 16 is formed on the inner diameter surface of the sensor unit mounting portion 9c in the unit mounting member 9, and the male thread portion 16 and the female thread portion 17 are screwed together via the sensor unit mounting member 9. The sensor unit 7 is attached to the outer ring 22. Other configurations are the same as those in the embodiment of FIG.

図１５は、この発明のさらに他の実施形態を示す。この実施形態の回転検出装置付き軸受では、図１０の実施形態において、センサ固定部材６Ａの外周面に雄ねじ部１６Ａを形成すると共に、センサユニット取付部材９におけるセンサユニット取付用部９ｃの段差内径面９ｃａに前記雄ねじ部１６Ａに螺合する雌ねじ部１７Ａを形成し、これら雄ねじ部１６Ａと雌ねじ部１７Ａの螺合によりセンサユニット取付部材９を介してセンサユニット７を外輪２２に取付けている。その他の構成は図１０の実施形態の場合と同様である。   FIG. 15 shows still another embodiment of the present invention. In the bearing with the rotation detection device of this embodiment, in the embodiment of FIG. 10, the male screw portion 16A is formed on the outer peripheral surface of the sensor fixing member 6A, and the step inner diameter surface of the sensor unit mounting portion 9c in the sensor unit mounting member 9 A female screw portion 17A that is screwed into the male screw portion 16A is formed on 9ca, and the sensor unit 7 is attached to the outer ring 22 via the sensor unit attachment member 9 by screwing of the male screw portion 16A and the female screw portion 17A. Other configurations are the same as those in the embodiment of FIG.

図１６は、この発明のさらに他の実施形態を示す。この実施形態の回転検出装置付き軸受では、図２の実施形態において、センサユニット取付部材９におけるセンサユニット取付用部９ｃに設けた止めねじ１８で、センサ固定部材６の一構成部材である円筒部材６ａをセンサユニット取付部材９に連結することにより、センサユニット取付部材９を介してセンサユニット７を外輪２２に固定している。その他の構成は図２の実施形態の場合と同様である。   FIG. 16 shows still another embodiment of the present invention. In the bearing with the rotation detection device of this embodiment, in the embodiment of FIG. 2, a cylindrical member which is a constituent member of the sensor fixing member 6 with the set screw 18 provided in the sensor unit mounting portion 9 c of the sensor unit mounting member 9. By connecting 6 a to the sensor unit mounting member 9, the sensor unit 7 is fixed to the outer ring 22 via the sensor unit mounting member 9. Other configurations are the same as those in the embodiment of FIG.

図１７は、この発明のさらに他の実施形態を示す。この実施形態の回転検出装置付き軸受では、図１０の実施形態において、センサユニット取付部材９におけるセンサユニット取付用部９ｃに設けた止めねじ１８Ａをセンサ固定部材６Ａの外周面に押し当ててセンサ固定部材６Ａをセンサユニット取付部材９に連結することにより、センサユニット取付部材９を介してセンサユニット７を外輪２２に固定している。その他の構成は図１０の実施形態の場合と同様である。   FIG. 17 shows still another embodiment of the present invention. In the bearing with rotation detection device of this embodiment, in the embodiment of FIG. 10, the set screw 18A provided in the sensor unit mounting portion 9c of the sensor unit mounting member 9 is pressed against the outer peripheral surface of the sensor fixing member 6A to fix the sensor. By connecting the member 6 </ b> A to the sensor unit mounting member 9, the sensor unit 7 is fixed to the outer ring 22 via the sensor unit mounting member 9. Other configurations are the same as those in the embodiment of FIG.

図１８は、この発明のさらに他の実施形態を示す。この実施形態の回転検出装置付き軸受では、図２の実施形態において、センサユニット取付部材９のセンサユニット取付用部９ｃからセンサ固定部材６の一構成部材である円筒部材６ａの嵌合部８にわたってねじ１９をねじ込んで、センサ固定部材６をセンサユニット取付部材９に連結することにより、センサユニット取付部材９を介してセンサユニット７を外輪２２に固定している。その他の構成は図２の実施形態の場合と同様である。   FIG. 18 shows still another embodiment of the present invention. In the bearing with the rotation detection device of this embodiment, in the embodiment of FIG. 2, the sensor unit mounting member 9 extends from the sensor unit mounting portion 9 c to the fitting portion 8 of the cylindrical member 6 a that is a constituent member of the sensor fixing member 6. The sensor unit 7 is fixed to the outer ring 22 via the sensor unit mounting member 9 by screwing the screw 19 and connecting the sensor fixing member 6 to the sensor unit mounting member 9. Other configurations are the same as those in the embodiment of FIG.

図１９は、この発明のさらに他の実施形態を示す。この実施形態の回転検出装置付き軸受では、図１０の実施形態において、センサユニット取付部材９のセンサユニット取付用部９ｃからセンサ固定部材６Ａの外径面にわたってねじ１９Ａをねじ込んで、センサ固定部材６Ａをセンサユニット取付部材９に連結することにより、センサユニット取付部材９を介してセンサユニット７を外輪２２に固定している。その他の構成は図１０の実施形態の場合と同様である。   FIG. 19 shows still another embodiment of the present invention. In the bearing with the rotation detection device of this embodiment, in the embodiment of FIG. 10, the screw 19A is screwed over the outer diameter surface of the sensor fixing member 6A from the sensor unit mounting portion 9c of the sensor unit mounting member 9, and the sensor fixing member 6A. The sensor unit 7 is fixed to the outer ring 22 through the sensor unit mounting member 9 by connecting the sensor unit mounting member 9 to the sensor unit mounting member 9. Other configurations are the same as those in the embodiment of FIG.

図２０および図２１は、この発明のさらに他の実施形態を示す。この実施形態の回転検出装置付き軸受では、図１０の実施形態において、図２０のようにセンサユニット取付部材９におけるセンサユニット取付用部９ｃの一端に軸方向に延びる複数の加締め用爪部９ｄを形成し、前記センサユニット取付用部９ｃの段差内径面９ｃａにセンサ固定部材６Ａの外径面を圧入させた後で、図２１のように前記各爪部９ｄを内径側に加締めて、前記センサユニット取付用部９ｃの段差内径面９ｃａにおける段差面と前記爪部９ｄとで回路基板５およびセンサ固定部材６を軸方向に挟み付けることにより、センサユニット取付部材９を介してセンサユニット７を外輪２２に固定している。その他の構成は図１０の実施形態の場合と同様である。   20 and 21 show still another embodiment of the present invention. In the bearing with the rotation detection device of this embodiment, in the embodiment of FIG. 10, a plurality of caulking claws 9d extending in the axial direction at one end of the sensor unit mounting portion 9c in the sensor unit mounting member 9 as shown in FIG. After the outer diameter surface of the sensor fixing member 6A is press-fitted into the step inner diameter surface 9ca of the sensor unit mounting portion 9c, the respective claw portions 9d are crimped to the inner diameter side as shown in FIG. By sandwiching the circuit board 5 and the sensor fixing member 6 in the axial direction between the step surface of the step inner diameter surface 9ca of the sensor unit mounting portion 9c and the claw portion 9d, the sensor unit 7 is interposed via the sensor unit mounting member 9. Is fixed to the outer ring 22. Other configurations are the same as those in the embodiment of FIG.

なお、以上の各実施形態において、センサユニット７の一構成部材であるセンサ固定部材６，６Ａのセンサユニット取付部材９，９Ａへの固定においては、接着剤を併用しても良い。   In each of the above embodiments, an adhesive may be used in combination for fixing the sensor fixing members 6 and 6A, which are one constituent member of the sensor unit 7, to the sensor unit mounting members 9 and 9A.

この発明の一実施形態にかかる回転検出装置付き軸受の分解断面図である。It is an exploded sectional view of a bearing with a rotation detector concerning one embodiment of this invention. 同回転検出装置付き軸受の組立状態を示す断面図である。It is sectional drawing which shows the assembly state of the bearing with the rotation detection apparatus. 同回転検出装置付き軸受における回転検出装置のセンサの一例を構成する半導体チップの平面図である。It is a top view of the semiconductor chip which constitutes an example of the sensor of the rotation detection device in the bearing with the rotation detection device. 同回転検出装置付き軸受における磁石取付構造の他の例の断面図である。It is sectional drawing of the other example of the magnet attachment structure in the bearing with the rotation detection apparatus. 同回転検出装置付き軸受における磁石取付構造のさらに他の例の断面図である。It is sectional drawing of the further another example of the magnet attachment structure in the bearing with the rotation detection apparatus. この発明の他の実施形態にかかる回転検出装置付き軸受の断面図である。It is sectional drawing of the bearing with a rotation detection apparatus concerning other embodiment of this invention. この発明のさらに他の実施形態にかかる回転検出装置付き軸受の断面図である。It is sectional drawing of the bearing with a rotation detection apparatus concerning further another embodiment of this invention. この発明のさらに他の実施形態にかかる回転検出装置付き軸受の断面図である。It is sectional drawing of the bearing with a rotation detection apparatus concerning further another embodiment of this invention. この発明のさらに他の実施形態にかかる回転検出装置付き軸受の分解断面図である。It is a disassembled sectional view of the bearing with a rotation detector according to still another embodiment of the present invention. 同回転検出装置付き軸受の組立状態を示す断面図である。It is sectional drawing which shows the assembly state of the bearing with the rotation detection apparatus. この発明のさらに他の実施形態にかかる回転検出装置付き軸受の断面図である。It is sectional drawing of the bearing with a rotation detection apparatus concerning further another embodiment of this invention. この発明のさらに他の実施形態にかかる回転検出装置付き軸受の断面図である。It is sectional drawing of the bearing with a rotation detection apparatus concerning further another embodiment of this invention. この発明のさらに他の実施形態にかかる回転検出装置付き軸受の断面図である。It is sectional drawing of the bearing with a rotation detection apparatus concerning further another embodiment of this invention. この発明のさらに他の実施形態にかかる回転検出装置付き軸受の断面図である。It is sectional drawing of the bearing with a rotation detection apparatus concerning further another embodiment of this invention. この発明のさらに他の実施形態にかかる回転検出装置付き軸受の断面図である。It is sectional drawing of the bearing with a rotation detection apparatus concerning further another embodiment of this invention. この発明のさらに他の実施形態にかかる回転検出装置付き軸受の断面図である。It is sectional drawing of the bearing with a rotation detection apparatus concerning further another embodiment of this invention. この発明のさらに他の実施形態にかかる回転検出装置付き軸受の断面図である。It is sectional drawing of the bearing with a rotation detection apparatus concerning further another embodiment of this invention. この発明のさらに他の実施形態にかかる回転検出装置付き軸受の断面図である。It is sectional drawing of the bearing with a rotation detection apparatus concerning further another embodiment of this invention. この発明のさらに他の実施形態にかかる回転検出装置付き軸受の断面図である。It is sectional drawing of the bearing with a rotation detection apparatus concerning further another embodiment of this invention. この発明のさらに他の実施形態にかかる回転検出装置付き軸受の分解断面図である。It is a disassembled sectional view of the bearing with a rotation detector according to still another embodiment of the present invention. 同回転検出装置付き軸受の組立状態を示す断面図である。It is sectional drawing which shows the assembly state of the bearing with the rotation detection apparatus. 従来例の断面図である。It is sectional drawing of a prior art example.

符号の説明Explanation of symbols

１…回転検出装置
２…磁石
３…センサ
６…センサ固定部材
７…センサユニット
８，８Ａ，８Ｂ…嵌合部
９，９Ａ…センサユニット取付部材
９ａ，９Ａａ…外輪嵌合部
９ｂ，９Ａａ…外輪端面係合部
９ｃ，９Ａｃ…センサユニット取付用部
１０…回転軸
１１ａ…磁気センサ素子
１４，１４Ａ，１５，１５Ａ…凹凸部
１６，１６Ａ…雄ねじ部
１７，１７Ａ…雌ねじ部
１８，１８Ａ…止めねじ
１９，１９Ａ…ねじ
２０…転がり軸受
２１…内輪
２２…外輪

DESCRIPTION OF SYMBOLS 1 ... Rotation detection apparatus 2 ... Magnet 3 ... Sensor 6 ... Sensor fixing member 7 ... Sensor unit 8, 8A, 8B ... Fitting part 9, 9A ... Sensor unit attachment member 9a, 9Aa ... Outer ring fitting part 9b, 9Aa ... Outer ring End face engaging portions 9c, 9Ac ... sensor unit mounting portion 10 ... rotating shaft 11a ... magnetic sensor elements 14, 14A, 15, 15A ... uneven portions 16, 16A ... male screw portions 17, 17A ... female screw portions 18, 18A ... set screw 19, 19A ... Screw 20 ... Rolling bearing 21 ... Inner ring 22 ... Outer ring

Claims (7)

内輪に回転軸が圧入される転がり軸受における前記内輪の回転中心に磁石を取付け、この磁石に対向する複数の磁気センサ素子を有し前記磁石の回転角度を検出するセンサを前記転がり軸受の外輪に設けた回転検出装置付き軸受であって、
前記外輪に環状のセンサユニット取付部材を設け、前記センサおよびこのセンサが取付けられたセンサ固定部材を有するセンサユニットを、前記外輪に前記センサユニット取付部材を介して取付けたことを特徴とする回転検出装置付き軸受。 A magnet is attached to the center of rotation of the inner ring in a rolling bearing in which a rotating shaft is press-fitted into the inner ring, and a sensor that has a plurality of magnetic sensor elements facing the magnet and detects the rotation angle of the magnet is attached to the outer ring of the rolling bearing. A bearing with a rotation detector provided,
An annular sensor unit mounting member is provided on the outer ring, and the rotation detecting unit is characterized in that the sensor and a sensor unit having a sensor fixing member to which the sensor is mounted are mounted on the outer ring via the sensor unit mounting member. Bearing with device. 請求項１において、前記センサユニット取付部材が、前記外輪の内径面に嵌合する外輪嵌合部と、この外輪嵌合部の一端から外径側へ延びて外輪の端面に係合する外輪端面係合部と、この外輪端面係合部の外周部から軸方向へ延びるセンサユニット取付用部とからなり、前記センサユニット取付用部に前記センサユニットが取付けられる回転検出装置付き軸受。   2. The outer ring end surface according to claim 1, wherein the sensor unit mounting member is engaged with an inner ring surface of the outer ring, and an outer ring end surface that extends from one end of the outer ring fitting unit toward the outer diameter side and engages with an end surface of the outer ring. A bearing with a rotation detection device comprising an engaging portion and a sensor unit mounting portion extending in the axial direction from an outer peripheral portion of the outer ring end surface engaging portion, wherein the sensor unit is mounted on the sensor unit mounting portion. 請求項１または請求項２において、前記センサユニットは、前記センサユニット取付部材に圧入により固定した回転検出装置付き軸受。   3. The bearing with a rotation detection device according to claim 1, wherein the sensor unit is fixed to the sensor unit mounting member by press-fitting. 請求項１または請求項２において、前記センサユニットの前記センサ固定部材および前記センサユニット取付部材が、互いに嵌合する環状の凹凸部を有し、この凹凸部の嵌合により、前記センサユニットの前記センサ固定部材が前記センサユニット取付部材に取付けられる回転検出装置付き軸受。   3. The sensor fixing member and the sensor unit mounting member of the sensor unit according to claim 1, wherein the sensor fixing member and the sensor unit mounting member have an annular concavo-convex portion that is fitted to each other, and the fitting of the concavo-convex portion causes the sensor unit to A bearing with a rotation detector, wherein a sensor fixing member is attached to the sensor unit attachment member. 請求項１において、前記センサユニットの前記センサ固定部材および前記センサユニット取付部材が、互いにねじ込まれるねじ部を有し、このねじ部によって、前記センサユニットの前記センサ固定部材が前記センサユニット取付部材に取付けられる回転検出装置付き軸受。   2. The sensor fixing member and the sensor unit mounting member of the sensor unit according to claim 1, wherein the sensor fixing member and the sensor unit mounting member of the sensor unit have screw portions to be screwed together, and the screw portion causes the sensor fixing member of the sensor unit to become the sensor unit mounting member. Mounted bearing with rotation detector. 請求項１において、前記センサユニットの前記センサ固定部材は、前記センサユニット取付部材の内径面または外径面に嵌まり合う嵌合部を有し、この嵌合部に設けた止めねじにより、前記センサユニットの前記センサ固定部材が前記センサユニット取付部材に固定される固定検出装置付き軸受。   The sensor fixing member of the sensor unit according to claim 1, wherein the sensor fixing member includes a fitting portion that fits into an inner diameter surface or an outer diameter surface of the sensor unit mounting member, and the set screw provided in the fitting portion A bearing with a fixed detection device, wherein the sensor fixing member of the sensor unit is fixed to the sensor unit mounting member. 請求項２ないし請求項６のいずれか１項において、前記センサユニットの前記センサ固定部材の前記センサユニット取付部材への固定に接着剤を併用した回転検出装置付き軸受。   The bearing with a rotation detection device according to any one of claims 2 to 6, wherein an adhesive is used together to fix the sensor fixing member of the sensor unit to the sensor unit mounting member.
JP2006307603A 2006-11-14 2006-11-14 Bearing with rotation detecting device Pending JP2008122269A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012235671A (en) * 2011-04-20 2012-11-29 Asmo Co Ltd Motor
CN113574286A (en) * 2019-03-11 2021-10-29 学校法人关西大学 Rolling bearing and rolling bearing equipped with sensor
US12000435B2 (en) 2019-03-11 2024-06-04 The School Corporation Kansai University Rolling bearing and sensor-equipped rolling bearing

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012235671A (en) * 2011-04-20 2012-11-29 Asmo Co Ltd Motor
CN113574286A (en) * 2019-03-11 2021-10-29 学校法人关西大学 Rolling bearing and rolling bearing equipped with sensor
US12000435B2 (en) 2019-03-11 2024-06-04 The School Corporation Kansai University Rolling bearing and sensor-equipped rolling bearing

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