JP2006153504A - Roller bearing device with sensor - Google Patents

Roller bearing device with sensor Download PDF

Info

Publication number
JP2006153504A
JP2006153504A JP2004340859A JP2004340859A JP2006153504A JP 2006153504 A JP2006153504 A JP 2006153504A JP 2004340859 A JP2004340859 A JP 2004340859A JP 2004340859 A JP2004340859 A JP 2004340859A JP 2006153504 A JP2006153504 A JP 2006153504A
Authority
JP
Japan
Prior art keywords
sensor
cover member
detection sensor
support portion
rolling bearing
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.)
Pending
Application number
JP2004340859A
Other languages
Japanese (ja)
Inventor
Shigeaki Furusawa
重明 古澤
Masahiro Inoue
昌弘 井上
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
JTEKT Corp
Original Assignee
JTEKT Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by JTEKT Corp filed Critical JTEKT Corp
Priority to JP2004340859A priority Critical patent/JP2006153504A/en
Publication of JP2006153504A publication Critical patent/JP2006153504A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/72—Sealings
    • F16C33/723—Shaft end sealing means, e.g. cup-shaped caps or covers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C41/00—Other accessories, e.g. devices integrated in the bearing not relating to the bearing function as such
    • F16C41/007—Encoders, e.g. parts with a plurality of alternating magnetic poles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
    • F16C19/14—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load
    • F16C19/18—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls
    • F16C19/181—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls with angular contact
    • F16C19/183—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls with angular contact with two rows at opposite angles
    • F16C19/184—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls with angular contact with two rows at opposite angles in O-arrangement
    • F16C19/186—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls with angular contact with two rows at opposite angles in O-arrangement with three raceways provided integrally on parts other than race rings, e.g. third generation hubs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2326/00—Articles relating to transporting
    • F16C2326/01—Parts of vehicles in general
    • F16C2326/02—Wheel hubs or castors

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)
  • Rolling Contact Bearings (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a roller bearing device with a sensor capable of positioning properly a rotational-frequency detection sensor, and preventing decline of its detection accuracy. <P>SOLUTION: In the rotational-frequency detection sensor 32, a support part 37 abutting on a cover member 33 for blocking the end of a roller bearing part 20 is projected, and a through-hole 37a into which a bolt member 34 for clamping the support part 37 is inserted is formed on the end of the support part. The support part 37 is clamped by screwing a nut member 35 with the bolt member 34, and the rotational-frequency detection sensor 32 is fixed to the cover member 33. A spot facing part 37b is provided in the through-hole 37a of the support part 37, to thereby prevent interference between the nut member 35 and the support part 37. <P>COPYRIGHT: (C)2006,JPO&amp;NCIPI

Description

本発明は、自動車などの車輪を支持しつつその回転速度を検出するセンサ付き転がり軸受装置に関する。   The present invention relates to a rolling bearing device with a sensor that detects a rotational speed of a vehicle such as an automobile while supporting the wheel.

自動車などの車輪を支持する転がり軸受装置には、アンチロックブレーキシステム等を制御するために、車輪の回転速度を検出する回転数検出センサが取り付けられたものがある。このようなセンサ付き転がり軸受装置としては、例えば、図４に示すように、車輪が取り付けられる車軸と一体に回転する回転輪としてのハブ５１と車体側に固定される固定輪５２とを備えた転がり軸受と、回転輪５１に一体回転可能に取り付けられたエンコーダ５３と、固定輪５２に取り付けられた有底筒状のカバー部材５４と、このカバー部材５４に取り付けられるとともに前記エンコーダ５３の回転に伴う磁界の変化によって車輪の回転数を検出する回転数検出センサ５５とを有するものがある（例えば特許文献１参照）。
カバー部材５４は、転がり軸受装置５０の内部に泥水等が侵入するのを防ぐべく、その一端面を覆うように閉塞している。また、このカバー部材５４の底部には、回転数検出センサ５５が挿入されるセンサ挿入孔５４ａが形成されているとともに、回転数検出センサ５５を固定するためのナット５６が溶接あるいは圧入されることで固定されている。
回転数検出センサ５５には、カバー部材５４に当接する支持部５５ａがその側面から突設されている。この支持部５５ａの端部には貫通孔５５ｂが形成されており、ボルト５７を貫通孔５５ｂに挿通してナット５６と螺合することでボルト５７の頭部とナット５６との間で支持部５５ａを挟持している。このようにして、回転数検出センサ５５は、センサ挿入孔５４ａに挿入されつつその検出部５５ｃがエンコーダ５３と所定の隙間をおいて近接した状態を保つように固定されている。 Some rolling bearing devices that support wheels such as automobiles are provided with a rotation speed detection sensor that detects the rotation speed of the wheels in order to control an antilock brake system or the like. As such a rolling bearing device with a sensor, for example, as shown in FIG. 4, a hub 51 as a rotating wheel rotating integrally with an axle to which a wheel is attached and a fixed wheel 52 fixed to the vehicle body side are provided. A rolling bearing, an encoder 53 attached to the rotating wheel 51 so as to be integrally rotatable, a bottomed cylindrical cover member 54 attached to the fixed wheel 52, and attached to the cover member 54 and to rotate the encoder 53 Some have a rotational speed detection sensor 55 that detects the rotational speed of a wheel by a change in the accompanying magnetic field (see, for example, Patent Document 1).
The cover member 54 is closed so as to cover one end face thereof in order to prevent muddy water and the like from entering the inside of the rolling bearing device 50. A sensor insertion hole 54a into which the rotation speed detection sensor 55 is inserted is formed at the bottom of the cover member 54, and a nut 56 for fixing the rotation speed detection sensor 55 is welded or press-fitted. It is fixed with.
The rotation speed detection sensor 55 is provided with a support portion 55 a that abuts against the cover member 54 from its side surface. A through hole 55b is formed at the end of the support portion 55a, and the bolt 57 is inserted into the through hole 55b and screwed into the nut 56, thereby supporting the support portion between the head of the bolt 57 and the nut 56. 55a is sandwiched. In this way, the rotation speed detection sensor 55 is fixed so that the detection portion 55c is kept close to the encoder 53 with a predetermined gap while being inserted into the sensor insertion hole 54a.

特開２００４−００４０４１号公報（第５頁）JP 2004-004041 A (page 5)

上記従来のセンサ付き転がり軸受装置において、ナット５６は溶接あるいは圧入することによってカバー部材５４に固定されているので、溶接に伴う熱影響あるいは圧入に伴う応力等によって、カバー部材５４のナット５６の周囲に部分的な変形（盛り上がり）が生じることがあった。また、ナット５６の取付精度が悪いと、カバー部材５４の外側底面５４ｂからナット５６の一部が突き出す場合もあった。
このようなカバー部材５４の変形やナット５６の突き出しが生じると、支持部５５ａをカバー部材５４の外側底面５４ｂに対して確実に当接させることができないので、回転数検出センサ５５を適正に位置決めすることができず、回転数検出センサ５５の検出精度の低下を招くことがあった。 In the conventional rolling bearing device with a sensor, the nut 56 is fixed to the cover member 54 by welding or press-fitting. Therefore, the surroundings of the nut 56 of the cover member 54 due to the thermal effect accompanying welding or the stress accompanying press-fitting, etc. In some cases, partial deformation (swelling) occurred. Further, if the mounting accuracy of the nut 56 is poor, a part of the nut 56 may protrude from the outer bottom surface 54 b of the cover member 54.
If the cover member 54 is deformed or the nut 56 is protruded, the support portion 55a cannot be reliably brought into contact with the outer bottom surface 54b of the cover member 54. Therefore, the rotation speed detection sensor 55 is properly positioned. In some cases, the detection accuracy of the rotation speed detection sensor 55 may be lowered.

本発明はこのような事情に鑑みなされたものであり、回転数検出センサを適正に位置決めすることができ、その検出精度が低下するのを防止できるセンサ付き転がり軸受装置の提供をその目的とする。   The present invention has been made in view of such circumstances, and an object of the present invention is to provide a sensor-equipped rolling bearing device that can appropriately position the rotation speed detection sensor and prevent the detection accuracy from being lowered. .

本発明は、固定輪と回転輪とを有する転がり軸受と、前記回転輪に一体回転可能に取り付けられたエンコーダと、前記固定輪側に固定された回転数検出センサと、を有するセンサ付き転がり軸受装置であって、前記回転数検出センサが挿入される挿入孔が設けられるとともに前記固定輪に取り付けられて前記エンコーダを覆いつつ前記転がり軸受の一端側開口部を閉塞するカバー部材を備え、前記回転数検出センサは、前記挿入孔に挿入して前記エンコーダに近接配置されたセンサ本体と、このセンサ本体に突設されるとともに前記カバー部材に当接する支持部とを有し、前記支持部が当接する前記カバー部材の取り付け部には第一のねじ部材が固定され、前記支持部には、前記第一のねじ部材及びこの第一のねじ部材が螺合する第二のねじ部材のうちの雄ねじ側を挿通させかつ第一のねじ部材との干渉を防止する座ぐり部を有する貫通孔が形成され、前記第一のねじ部材に前記第二のねじ部材を螺合することで前記支持部を前記両ねじ部材により挟持して、前記回転数検出センサを前記カバー部材に固定していることを特徴としている。   The present invention relates to a rolling bearing with a sensor having a rolling bearing having a fixed ring and a rotating ring, an encoder attached to the rotating ring so as to be integrally rotatable, and a rotation speed detection sensor fixed to the fixed ring side. An apparatus is provided with a cover member that is provided with an insertion hole into which the rotational speed detection sensor is inserted and that is attached to the fixed ring and covers the encoder, and closes one end side opening of the rolling bearing. The number detection sensor includes a sensor main body that is inserted into the insertion hole and is disposed in proximity to the encoder, and a support portion that protrudes from the sensor main body and contacts the cover member. A first screw member is fixed to the attachment portion of the cover member that comes into contact, and the first screw member and a second screw into which the first screw member is screwed to the support portion. A through hole having a counterbore portion for inserting the male screw side of the material and preventing interference with the first screw member is formed, and the second screw member is screwed into the first screw member The support portion is sandwiched between the screw members, and the rotational speed detection sensor is fixed to the cover member.

上記のように構成されたセンサ付き転がり軸受装置によれば、前記第一のねじ部材を前記カバー部材に固定する際に、変形により前記カバー部材の前記第一のねじ部材近傍が突出したり、前記第一のねじ部材の一部が前記カバー部材の取り付け部から外方に突出したとしても、前記貫通孔に形成された座ぐり部によって、前記カバー部材や前記第一のねじ部材の突出した部分と前記支持部とが干渉するのを防止できる。よって、前記カバー部材の変形や第一のねじ部材の突出を許容しつつ、前記支持部を前記カバー部材に確実に当接させることができ、前記回転数検出センサを適正に位置決めできる。   According to the rolling bearing device with a sensor configured as described above, when the first screw member is fixed to the cover member, the vicinity of the first screw member of the cover member protrudes due to deformation, Even if a part of the first screw member protrudes outward from the attachment portion of the cover member, the cover member and the protruding portion of the first screw member are formed by the counterbore formed in the through hole. And the support portion can be prevented from interfering with each other. Therefore, while allowing the deformation of the cover member and the protrusion of the first screw member, the support portion can be reliably brought into contact with the cover member, and the rotation speed detection sensor can be properly positioned.

上記センサ付き転がり軸受装置において、前記回転数検出センサの支持部には、前記貫通孔から先端方向へ延びる延長部が形成されていてもよい。
この場合、前記支持部と前記カバー部材との接触面積を拡大できると同時に、前記貫通孔を中心として前記センサ本体と反対側に延長部が形成されているので、前記両ねじ部材によって前記支持部を挟持した際に、前記延長部によって支持部全体がたわむのを防止でき、前記支持部をより確実に前記カバー部材に当接させることができる。従って、前記回転数検出センサをより適正に位置決めができる。 In the rolling bearing device with a sensor, an extension portion extending from the through hole toward the distal end may be formed on the support portion of the rotation speed detection sensor.
In this case, since the contact area between the support part and the cover member can be increased, and at the same time, an extension part is formed on the opposite side of the sensor body with the through hole as a center, the support part is formed by the both screw members. It is possible to prevent the entire support portion from being bent by the extension portion when the holder is clamped, and the support portion can be brought into contact with the cover member more reliably. Therefore, the rotation speed detection sensor can be positioned more appropriately.

以上のように、本発明に係るセンサ付き転がり軸受装置は、回転数検出センサを適正に位置決めすることができるので、その検出精度が低下するのを防止できる。   As described above, the sensor-equipped rolling bearing device according to the present invention can appropriately position the rotation speed detection sensor, and therefore can prevent the detection accuracy from deteriorating.

次に、本発明の好ましい実施形態について添付図面を参照しながら説明する。図１は本発明の第一の実施形態であるセンサ付き転がり軸受装置の構成を示す軸方向断面図である。このセンサ付き転がり軸受装置１０は、自動車などの車両の車輪用軸受装置として用いられるものであり、転がり軸受部２０とセンサ部３０とにより構成されている。   Next, preferred embodiments of the present invention will be described with reference to the accompanying drawings. FIG. 1 is an axial sectional view showing a configuration of a rolling bearing device with a sensor according to a first embodiment of the present invention. This sensor-equipped rolling bearing device 10 is used as a wheel bearing device for a vehicle such as an automobile, and includes a rolling bearing portion 20 and a sensor portion 30.

転がり軸受部２０は、複列のアンギュラ玉軸受を構成しており、回転輪としてのハブ２１と、固定輪としての外輪部材２２と、ハブ２１と外輪部材２２の間に配置された複数の玉からなる転動体２３と、これらの転動体２３をそれぞれ保持する保持器２４と、外輪部材２２とハブ２１との隙間に設けられたシール２５と、を備えている。
上記ハブ２１は、図示しない車輪が取り付けられる車軸であるとともに、転がり軸受部２０の回転輪を構成している。ハブ２１の外周面には第一の内輪軌道２１ｅが形成されている。また、ハブ２１の一端側には車輪取付用のインロー部２１ａ及びフランジ部２１ｂを備えており、このフランジ部２１ｂには車輪等を固定するための複数本のハブボルト２１ｃが固定されている。また、ハブ２１の他端側には、ハブ２１の外周面より小径の段部２１ｇが形成されており、この段部２１ｇには、外周面に第二の内輪軌道２１ｆが形成された円環状の内輪部材２１ｄが外嵌されている。この内輪部材２１ｄは段部２１ｇの先端部に設けられたかしめ部をかしめることによって、段部２１ｇに固定されている。
外輪部材２２は、車体側に固定される固定輪であり、その内周面には、第一および第二の内輪軌道２１ｅ，２１ｆに対向する第一および第二の外輪軌道２２ａ，２２ｂが形成されている。 The rolling bearing portion 20 constitutes a double row angular ball bearing, and includes a hub 21 as a rotating wheel, an outer ring member 22 as a fixed ring, and a plurality of balls arranged between the hub 21 and the outer ring member 22. A rolling element 23, a cage 24 for holding the rolling elements 23, and a seal 25 provided in a gap between the outer ring member 22 and the hub 21.
The hub 21 is an axle to which a wheel (not shown) is attached and constitutes a rotating wheel of the rolling bearing portion 20. A first inner ring raceway 21 e is formed on the outer peripheral surface of the hub 21. One end of the hub 21 is provided with an inlay portion 21a for attaching a wheel and a flange portion 21b, and a plurality of hub bolts 21c for fixing a wheel or the like are fixed to the flange portion 21b. Further, a step portion 21g having a smaller diameter than the outer peripheral surface of the hub 21 is formed on the other end side of the hub 21, and an annular shape in which a second inner ring raceway 21f is formed on the outer peripheral surface of the step portion 21g. The inner ring member 21d is externally fitted. The inner ring member 21d is fixed to the step portion 21g by caulking a caulking portion provided at the tip of the step portion 21g.
The outer ring member 22 is a fixed ring fixed to the vehicle body side, and first and second outer ring raceways 22a and 22b facing the first and second inner ring raceways 21e and 21f are formed on the inner peripheral surface thereof. Has been.

センサ部３０は、内輪部材２１ｄの端部に一体回転可能に取り付けられた円環状のエンコーダ３１と、外輪部材２２に取り付けられたカバー部材３３と、エンコーダ３１に近接配置するとともにカバー部材３３に固定された回転数検出センサ３２と、この回転数検出センサ３２をカバー部材３３に固定するための第一のねじ部材としてのナット部材３５および第二のねじ部材としてのボルト部材３４と、を備えている。   The sensor unit 30 is arranged in the vicinity of the encoder 31, the annular encoder 31 attached to the end of the inner ring member 21 d so as to be integrally rotatable, the cover member 33 attached to the outer ring member 22, and fixed to the cover member 33. And a nut member 35 as a first screw member and a bolt member 34 as a second screw member for fixing the rotation number detection sensor 32 to the cover member 33. Yes.

エンコーダ３１は、円環状に成形された磁気リング３１ａと円環状の支持部材３１ｂとにより構成されており、支持部材３１ｂを内輪部材２１ｄの外端部に挿嵌することで、内輪部材２１ｄと一体回転可能に取り付けられている。支持部材３１ｂは、金属板等を折り曲げる事により、断面ほぼＴ字形で全体を円環状に形成し、内輪部材２１ｄの外端部に挿嵌固定されている。磁気リング３１ａは、支持部材３１ｂの円環部３１ｃに接着するなどして固定されており、その周方向に複数の磁極が連続的に配置されている。このように構成された磁気リング３１ａは、ハブ２１が回転した際、ハブ２１の回転状態を磁界の変化として回転数検出センサ３２に検出させることができるようにされている。   The encoder 31 includes an annular magnetic ring 31a and an annular support member 31b. The encoder 31 is integrated with the inner ring member 21d by inserting the support member 31b into the outer end of the inner ring member 21d. It is mounted for rotation. The support member 31b is formed by bending a metal plate or the like to form an annular shape as a whole with a substantially T-shaped cross section, and is fitted and fixed to the outer end portion of the inner ring member 21d. The magnetic ring 31a is fixed, for example, by adhering to the annular portion 31c of the support member 31b, and a plurality of magnetic poles are continuously arranged in the circumferential direction. The magnetic ring 31a configured as described above is configured such that when the hub 21 rotates, the rotational speed detection sensor 32 can detect the rotation state of the hub 21 as a change in magnetic field.

カバー部材３３は、金属製の薄板等を用いて有底筒状に形成されており、カバー部材３３の開口側外周端部３３ａを外輪部材２２の肩部２２ｃに内嵌することによって転がり軸受部２０の開口を閉塞している。このカバー部材３３の外周側面には、環状の突起３３ｂが形成されており外輪部材２２の端面に当接することによってカバー部材３３を外輪部材２２に対して位置決めしている。またカバー部材３３の外径は、外輪部材２２の肩部２２ｃの内径に対して、雨水等の浸入を防止できる程度に圧入される寸法となっている。カバー部材３３の底部３３ｃにはナット部材３５が固定されるとともにカバー部材３３の内外を連通する孔部３３ｄが形成されており、カバー部材３３の外側からナット部材３５に対してボルト部材３４が螺合できるようにされている。   The cover member 33 is formed in a bottomed cylindrical shape using a metal thin plate or the like, and the rolling bearing portion is formed by fitting the opening side outer peripheral end portion 33a of the cover member 33 into the shoulder portion 22c of the outer ring member 22. Twenty openings are closed. An annular protrusion 33 b is formed on the outer peripheral side surface of the cover member 33, and the cover member 33 is positioned with respect to the outer ring member 22 by contacting the end surface of the outer ring member 22. Further, the outer diameter of the cover member 33 is dimensioned so as to be pressed into the inner diameter of the shoulder 22c of the outer ring member 22 to such an extent that rainwater or the like can be prevented from entering. A nut 33 is fixed to the bottom 33c of the cover member 33, and a hole 33d that communicates the inside and outside of the cover member 33 is formed. The bolt member 34 is screwed to the nut member 35 from the outside of the cover member 33. Can be combined.

このナット部材３５は、その内周面にねじ部３５ａが設けられているとともにその端面にはインロー部３５ｂが形成されており、このインロー部３５ｂをカバー部材３３の内側から孔部３３ｄに挿入した状態で、その周縁もしくは一部を溶接することによってカバー部材３３に固定されている。また、インロー部３６ｂの外径寸法を孔部３３ｄに対して締まりばめとし、圧入することで固定してもよい。このようにしてナット部材３５はカバー部材３３の内側底面３３ｅに固定されている。
さらに、このカバー部材３３の底部３３ｃには、孔部３３ｄに隣接してその内外を連通するセンサ挿入孔３３ｆが形成されている。このセンサ挿入孔３３ｆには、エンコーダ３１に近接配置された回転数検出センサ３２が挿入されている。 The nut member 35 is provided with a threaded portion 35a on the inner peripheral surface thereof, and an inlay portion 35b is formed on an end surface thereof. The inlay portion 35b is inserted into the hole portion 33d from the inside of the cover member 33. In the state, it is fixed to the cover member 33 by welding its peripheral edge or part thereof. Alternatively, the outer diameter dimension of the spigot part 36b may be an interference fit with respect to the hole part 33d and fixed by press-fitting. In this way, the nut member 35 is fixed to the inner bottom surface 33e of the cover member 33.
Further, a sensor insertion hole 33f is formed in the bottom 33c of the cover member 33 adjacent to the hole 33d and communicating between the inside and the outside. The rotational speed detection sensor 32 disposed in the vicinity of the encoder 31 is inserted into the sensor insertion hole 33f.

回転数検出センサ３２は、センサ挿入孔３３ｆに挿入してその一端部がエンコーダ３１に近接配置されたほぼ円筒状のセンサ本体３６とこのセンサ本体３６から径方向に突設された支持部３７とを有している。センサ本体３６は、その一端部に検出部３６ａを備えており、この検出部３６ａをエンコーダ３１に近接するようにされている。また、他端部には検出結果を信号として出力するためのハーネス３６ｂを備えるとともに、内部には例えばホール素子等の磁気検出素子を備えており、検出部３６ａによって検出される磁界の変化に応じてハーネス３６ｂから信号を出力するように構成されている。これらの磁気検出素子等は、例えば硬質樹脂等で埋包して円筒状に成形されることでセンサ本体３６を形作っている。このようなセンサ本体３６は、磁気リング３１ａによるハブ２１の回転に応じた磁界の変化を検出し、ハーネス３６ｂを通じて図示しない制御部等に信号を出力する。制御部は、この信号に基づいて車輪の回転速度を得ることができる。   The rotational speed detection sensor 32 is inserted into the sensor insertion hole 33f and has one end portion disposed close to the encoder 31 and a substantially cylindrical sensor body 36, and a support portion 37 projecting radially from the sensor body 36. have. The sensor main body 36 includes a detection unit 36 a at one end thereof, and the detection unit 36 a is arranged close to the encoder 31. In addition, a harness 36b for outputting the detection result as a signal is provided at the other end portion, and a magnetic detection element such as a Hall element is provided therein, and responds to changes in the magnetic field detected by the detection unit 36a. The signal is output from the harness 36b. These magnetic detection elements and the like form a sensor body 36 by being embedded in, for example, a hard resin and formed into a cylindrical shape. Such a sensor body 36 detects a change in the magnetic field according to the rotation of the hub 21 by the magnetic ring 31a, and outputs a signal to a control unit (not shown) through the harness 36b. The control unit can obtain the rotational speed of the wheel based on this signal.

支持部３７は、硬質樹脂で成形されたセンサ本体３６から一体に突設されるとともに、カバー部材３３の外側底面３３ｇに沿うように板状に形成され、カバー部材３３の取り付け部としての外側底面３３ｇに当接している。なお、支持部３７はセンサ本体３６と別部材として成形した後、センサ本体３６を取り付けるようにしてもよい。
支持部３７の端部側には、ナット部材３５のねじ部３５ａと一致するように貫通孔３７ａが形成されており、ボルト部材３４のねじ部３４ａを貫通孔３７ａに挿通してナット部材３５のねじ部３５ａと螺合することによって、ナット部材３５とボルト部材３４の頭部３４ｂとの間で支持部３７を挟持している。また貫通孔３７ａのカバー部材３３側端部には座ぐり部３７ｂが形成されている。 The support portion 37 protrudes integrally from the sensor main body 36 formed of a hard resin, and is formed in a plate shape along the outer bottom surface 33 g of the cover member 33, and the outer bottom surface as an attachment portion of the cover member 33. It is in contact with 33g. The support portion 37 may be formed as a separate member from the sensor body 36 and then attached to the sensor body 36.
A through hole 37a is formed on the end portion side of the support portion 37 so as to coincide with the screw portion 35a of the nut member 35. The screw portion 34a of the bolt member 34 is inserted into the through hole 37a and the nut member 35 is inserted. The support portion 37 is sandwiched between the nut member 35 and the head portion 34b of the bolt member 34 by screwing with the screw portion 35a. A counterbore 37b is formed at the end of the through hole 37a on the cover member 33 side.

この座ぐり部３７ｂは、貫通孔３７ａより大きい直径で、支持部３７が外側底面３３ｇに当接している当接面３７ｃ側から同心に形成された孔で、支持部３７の厚み幅のほぼ半分の深さ寸法で形成されている。この座ぐり部３７ｂの直径は、カバー部材３３の孔部３３ｄに対してもやや大きい直径に設定されており、支持部３７とナット部材３５およびその周囲のカバー部材３３との干渉を防止するようにされている。
また、上記センサ本体３６および支持部３７は、センサ本体３６がカバー部材３３のセンサ挿入孔３３ｆに挿入され且つその検出部３６ａがエンコーダ３１の磁気リング３１ａと所定の隙間をおいて近接配置された状態を保つような寸法に設定されており、上述のように、支持部３７をカバー部材３３の外側底面３３ｇに当接した状態で固定することで、回転数検出センサ３２をカバー部材３３に対して適正位置に位置決めし、固定している。 The counterbore portion 37b is a hole having a diameter larger than that of the through hole 37a and formed concentrically from the contact surface 37c side where the support portion 37 is in contact with the outer bottom surface 33g, and is approximately half the thickness width of the support portion 37. The depth dimension is formed. The diameter of the spot facing portion 37b is set to be slightly larger than the hole portion 33d of the cover member 33 so as to prevent interference between the support portion 37 and the nut member 35 and the surrounding cover member 33. Has been.
The sensor main body 36 and the support portion 37 are arranged such that the sensor main body 36 is inserted into the sensor insertion hole 33f of the cover member 33 and the detection portion 36a thereof is disposed close to the magnetic ring 31a of the encoder 31 with a predetermined gap. The dimension is set so as to maintain the state. As described above, by fixing the support portion 37 in contact with the outer bottom surface 33g of the cover member 33, the rotational speed detection sensor 32 is fixed to the cover member 33. Is positioned and fixed in the proper position.

上記のように構成された本実施形態に係るセンサ付き転がり軸受装置１０によれば、ナット部材３５を溶接や圧入によってカバー部材３３に固定する際に、変形によりカバー部材３３の孔部３３ｄ近傍が突出したり、ナット部材３５の一部が外側底面３３ｇから外方に突出したとしても、貫通孔３７ａのカバー部材３３側端部に形成された座ぐり部３７ｂによって、前記カバー部材３３およびナット部材３５の突出部分と支持部３７とが干渉するのを防止できる。よって、前記の変形や突出を許容しつつ支持部３７を外側底面３３ｇに確実に当接させることができる。従って、回転数検出センサ３２を適正に位置決めでき、回転数検出センサ３２の位置ずれによる回転数検出センサ３２の検出精度の低下を抑制できる。
また、回転数検出センサ３２の検出精度を低下させることなく、ナット部材３５のカバー部材３３に対する取付精度を緩和できるので、ナット部材３５の取り付け作業を容易にでき、センサ付き転がり軸受装置１０としての組み立て作業性を向上させることができる。 According to the sensor-equipped rolling bearing device 10 configured as described above, when the nut member 35 is fixed to the cover member 33 by welding or press fitting, the vicinity of the hole 33d of the cover member 33 is deformed. Even if the nut member 35 protrudes or a part of the nut member 35 protrudes outward from the outer bottom surface 33g, the cover member 33 and the nut member 35 are formed by the counterbore portion 37b formed at the end of the through hole 37a on the cover member 33 side. It can prevent that the protrusion part of this and the support part 37 interfere. Therefore, it is possible to reliably bring the support portion 37 into contact with the outer bottom surface 33g while allowing the deformation and protrusion described above. Accordingly, the rotation speed detection sensor 32 can be properly positioned, and a decrease in the detection accuracy of the rotation speed detection sensor 32 due to the positional deviation of the rotation speed detection sensor 32 can be suppressed.
Further, since the mounting accuracy of the nut member 35 with respect to the cover member 33 can be relaxed without reducing the detection accuracy of the rotation speed detection sensor 32, the mounting operation of the nut member 35 can be facilitated, and the rolling bearing device 10 with the sensor can be realized. Assembly workability can be improved.

また、本実施形態では、支持部３７を外側底面３３ｇに確実に当接させることができるので、支持部３５によってセンサ挿入孔３３ｆや孔部３３ｄを閉塞し、泥水など水分や異物がカバー部材３３の内部に侵入するのを防止できる。従って、検出部３６ａや磁気リング３１ａなどが泥水や異物等で汚損することに起因する検出精度の低下や、軸受部２０の耐久性能の低下を抑制できる。   Further, in the present embodiment, since the support portion 37 can be reliably brought into contact with the outer bottom surface 33g, the sensor insertion hole 33f and the hole portion 33d are closed by the support portion 35, and moisture and foreign matter such as muddy water are covered with the cover member 33. Can be prevented from entering the inside. Therefore, it is possible to suppress a decrease in detection accuracy and a decrease in durability performance of the bearing portion 20 due to the detection unit 36a, the magnetic ring 31a, and the like being soiled by muddy water or foreign matter.

なお、本実施形態ではカバー部材３３に固定される第一のねじ部材としてナット部材３５を用いたが、ボルト部材３４を第一のねじ部材として固定することで、回転数検出センサ３２をカバー部材３３に固定してもよい。この場合、座ぐり部３７ｂは、ボルト部材３４の頭部３４ｂとの干渉を防止することになる。
また、本実施形態では転がり軸受部２０には複列のアンギュラ玉軸受を用いたが、例えば、円筒ころや円錐ころを用いたころ軸受を用いてもよい。また、回転数検出センサ３２には磁気センサを用いたが、光電式、渦電流式等、公知のセンサを用いることもできる。 In the present embodiment, the nut member 35 is used as the first screw member fixed to the cover member 33. However, the rotation speed detection sensor 32 is attached to the cover member by fixing the bolt member 34 as the first screw member. You may fix to 33. In this case, the spot facing portion 37b prevents interference with the head portion 34b of the bolt member 34.
In the present embodiment, the double-row angular contact ball bearing is used for the rolling bearing portion 20, but for example, a roller bearing using a cylindrical roller or a tapered roller may be used. Moreover, although the magnetic sensor was used for the rotation speed detection sensor 32, a known sensor such as a photoelectric type or an eddy current type can also be used.

図２は、本発明の第二の実施形態に係るセンサ付き軸受装置の要部断面図である。本実施形態と第一の実施形態との主な相違点は、貫通孔３７ａから先端方向へ延びる延長部３７ｄが回転数検出センサ３２の支持部３７に形成されている点である。その他の点については、第一の実施形態と同様なので説明を省略する。   FIG. 2 is a cross-sectional view of an essential part of a bearing device with a sensor according to a second embodiment of the present invention. The main difference between this embodiment and the first embodiment is that an extension portion 37d extending from the through hole 37a in the distal direction is formed on the support portion 37 of the rotation speed detection sensor 32. Since other points are the same as those in the first embodiment, description thereof is omitted.

図２中、支持部３７に形成された延長部３７ｄは、センサ本体３６と貫通孔３７ａとを結んだ直線に沿って延びており、貫通孔３７ａからセンサ本体３６側端部までの長さ寸法とほぼ同じ長さ寸法をもって延長されている。
この場合、支持部３７とカバー部材３３の外側底面３３ｇとの接触面積が拡大できると同時に、貫通孔３７ａを中心としてセンサ本体３６と反対側に延長部３７ｄが形成されているので、ボルト部材３４とナット部材３５とによって支持部３７を挟持した際に、センサ本体３６がエンコーダ３１から離反する方向に支持部３７全体がたわむのを防止でき、支持部３７をより確実に外側底面３３ｇに当接させることができる。従って、回転数検出センサ３２をより確実に位置決めでき、その検出精度の低下を効果的に抑制できる。 In FIG. 2, the extension 37 d formed on the support 37 extends along a straight line connecting the sensor body 36 and the through hole 37 a, and the length dimension from the through hole 37 a to the end of the sensor body 36 side. Are extended with approximately the same length.
In this case, the contact area between the support portion 37 and the outer bottom surface 33g of the cover member 33 can be increased, and at the same time, the extension portion 37d is formed on the opposite side of the sensor body 36 with the through hole 37a as the center. When the support portion 37 is clamped by the nut member 35, the entire support portion 37 can be prevented from being bent in the direction away from the encoder 31, and the support portion 37 can be more reliably brought into contact with the outer bottom surface 33g. Can be made. Therefore, the rotation speed detection sensor 32 can be positioned more reliably, and a decrease in detection accuracy can be effectively suppressed.

なお、図２では延長部３７ｄは、センサ本体３６と貫通孔３７ａとを結んだ直線に沿って延長したものを例示したが、支持部３７にたわみ等の変形が発生するのを抑制することができればよいので、例えば、図３に示すように延長部３７ｄを複数設けてもよいし、直線状に延長したものではなく異型状に形成してもよい。図３（ａ）は図２にて示した回転数検出センサ３２を示している。この場合、上述したように、支持部３７には貫通孔３７ａからセンサ本体３６側端部までの長さ寸法とほぼ同じ長さ寸法をもって延長部３７ｄが形成されている。（ｂ）も（ａ）と同様の長さ寸法をもって延長部３７ｄが貫通孔３７ａを中心に形成されているが、センサ本体３６と貫通孔３７ａとを結んだ直線に対して対称となるように均等な角度で斜めに二つの延長部３７ｄが形成されている。（ｃ）では、延長部３７ｄは、センサ本体３６と貫通孔３７ａとを結んだ直線に対して対称となるような三角形状に形成されている。
このように延長部３７ｄの形状は、支持部３７にたわみ等の変形が発生するのを抑制することができる形状であれば特にその形状は限定されるものではない。 In FIG. 2, the extension portion 37d is illustrated as extending along a straight line connecting the sensor main body 36 and the through hole 37a. However, it is possible to suppress deformation such as deflection in the support portion 37. Therefore, for example, a plurality of extension portions 37d may be provided as shown in FIG. 3, or may be formed in an irregular shape instead of being linearly extended. FIG. 3A shows the rotation speed detection sensor 32 shown in FIG. In this case, as described above, the extension portion 37d is formed in the support portion 37 with substantially the same length dimension from the through hole 37a to the end portion on the sensor body 36 side. In (b), the extension portion 37d is formed with the same length as that in (a) and the through hole 37a is formed at the center, but is symmetrical with respect to the straight line connecting the sensor body 36 and the through hole 37a. Two extending portions 37d are formed obliquely at an equal angle. In (c), the extension part 37d is formed in a triangular shape that is symmetrical with respect to a straight line connecting the sensor body 36 and the through hole 37a.
Thus, the shape of the extension portion 37d is not particularly limited as long as the extension portion 37d is a shape that can prevent deformation of the support portion 37 such as bending.

なお、本発明のセンサ付き転がり軸受装置は、上記実施形態に限定されるものではなく、軸受部、センサ部の構成やカバー部材、支持部、および座ぐり部等の構成、形状、および配置等は、本発明の趣旨に基づいて適宜変更することができる。   The sensor-equipped rolling bearing device of the present invention is not limited to the above-described embodiment, and the configuration, shape, arrangement, and the like of the bearing portion, the configuration of the sensor portion, the cover member, the support portion, the counterbore portion, and the like. Can be appropriately changed based on the gist of the present invention.

本発明の第一の実施形態であるセンサ付き転がり軸受装置の構成を示す軸方向断面図である。It is an axial sectional view showing the composition of the rolling bearing device with a sensor which is a first embodiment of the present invention. 本発明の第二の実施形態に係るセンサ付き軸受装置の要部断面図である。It is principal part sectional drawing of the bearing apparatus with a sensor which concerns on 2nd embodiment of this invention. 支持部に形成された延長部の変形例を例示した平面図である。It is the top view which illustrated the modification of the extension part formed in the support part. 従来のセンサ付き転がり軸受装置の構成を示す軸方向断面図である。It is axial direction sectional drawing which shows the structure of the conventional rolling bearing apparatus with a sensor.

符号の説明Explanation of symbols

１０ センサ付き転がり軸受装置
２１ ハブ
２２ 外輪部材
３１ エンコーダ
３２ 回転数検出センサ
３３ カバー部材
３３ｆ センサ挿入孔
３４ ボルト部材
３５ ナット部材
３６ センサ本体
３７ 支持部
３７ａ 貫通孔
３７ｂ 座ぐり部
３７ｄ 延長部 DESCRIPTION OF SYMBOLS 10 Rolling bearing apparatus with a sensor 21 Hub 22 Outer ring member 31 Encoder 32 Rotation speed detection sensor 33 Cover member 33f Sensor insertion hole 34 Bolt member 35 Nut member 36 Sensor main body 37 Support part 37a Through hole 37b Counterbore part 37d Extension part

Claims (2)

固定輪と回転輪とを有する転がり軸受と、前記回転輪に一体回転可能に取り付けられたエンコーダと、前記固定輪側に固定された回転数検出センサと、を有するセンサ付き転がり軸受装置であって、
前記回転数検出センサが挿入される挿入孔が設けられるとともに前記固定輪に取り付けられて前記エンコーダを覆いつつ前記転がり軸受の一端側開口部を閉塞するカバー部材を備え、
前記回転数検出センサは、前記挿入孔に挿入して前記エンコーダに近接配置されたセンサ本体と、このセンサ本体に突設されるとともに前記カバー部材に当接する支持部とを有し、
前記支持部が当接する前記カバー部材の取り付け部には第一のねじ部材が固定され、
前記支持部には、前記第一のねじ部材及びこの第一のねじ部材が螺合する第二のねじ部材のうちの雄ねじ側を挿通させかつ第一のねじ部材との干渉を防止する座ぐり部を有する貫通孔が形成され、
前記第一のねじ部材に前記第二のねじ部材を螺合することで前記支持部を前記両ねじ部材により挟持して、前記回転数検出センサを前記カバー部材に固定していることを特徴とするセンサ付き転がり軸受装置。 A sensor-equipped rolling bearing device comprising: a rolling bearing having a fixed ring and a rotating ring; an encoder attached to the rotating ring so as to be integrally rotatable; and a rotation number detection sensor fixed to the fixed ring side. ,
An insertion hole into which the rotational speed detection sensor is inserted, and a cover member that is attached to the fixed ring and covers the encoder while closing the one end side opening of the rolling bearing;
The rotational speed detection sensor includes a sensor main body that is inserted into the insertion hole and is disposed in proximity to the encoder, and a support portion that protrudes from the sensor main body and contacts the cover member.
A first screw member is fixed to the attachment portion of the cover member with which the support portion abuts,
A counterbore that inserts the male screw side of the first screw member and the second screw member into which the first screw member is screwed into the support portion and prevents interference with the first screw member. A through hole having a portion is formed,
The second screw member is screwed into the first screw member so that the support portion is sandwiched between the two screw members, and the rotational speed detection sensor is fixed to the cover member. Rolling bearing device with sensor. 前記支持部には、前記貫通孔から先端方向へ延びる延長部が形成されている請求項１記載のセンサ付き転がり軸受装置。   The rolling bearing device with a sensor according to claim 1, wherein the support portion is formed with an extension portion extending from the through hole in a distal direction.
JP2004340859A 2004-11-25 2004-11-25 Roller bearing device with sensor Pending JP2006153504A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2004340859A JP2006153504A (en) 2004-11-25 2004-11-25 Roller bearing device with sensor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2004340859A JP2006153504A (en) 2004-11-25 2004-11-25 Roller bearing device with sensor

Publications (1)

Publication Number Publication Date
JP2006153504A true JP2006153504A (en) 2006-06-15

Family

ID=36632005

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2004340859A Pending JP2006153504A (en) 2004-11-25 2004-11-25 Roller bearing device with sensor

Country Status (1)

Country Link
JP (1) JP2006153504A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015047164A1 (en) * 2013-09-27 2015-04-02 Scania Cv Ab Sensor retainer device with a retainer portion for abs sensor means pertaining to a wheel suspension for a vehicle
JP2015172408A (en) * 2014-03-12 2015-10-01 日本精工株式会社 Rolling bearing unit with rotational speed detector
JP2017053389A (en) * 2015-09-08 2017-03-16 株式会社ジェイテクト Bering device for wheel

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1176865A (en) * 1997-09-11 1999-03-23 Kankyo:Kk Anode plate installation structure for air cleaner
JPH11183493A (en) * 1997-10-17 1999-07-09 Nippon Seiko Kk Rolling bearing unit with rotating speed detector
JP2002187406A (en) * 2000-12-20 2002-07-02 Nsk Ltd Wheel driving gear

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1176865A (en) * 1997-09-11 1999-03-23 Kankyo:Kk Anode plate installation structure for air cleaner
JPH11183493A (en) * 1997-10-17 1999-07-09 Nippon Seiko Kk Rolling bearing unit with rotating speed detector
JP2002187406A (en) * 2000-12-20 2002-07-02 Nsk Ltd Wheel driving gear

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015047164A1 (en) * 2013-09-27 2015-04-02 Scania Cv Ab Sensor retainer device with a retainer portion for abs sensor means pertaining to a wheel suspension for a vehicle
JP2015172408A (en) * 2014-03-12 2015-10-01 日本精工株式会社 Rolling bearing unit with rotational speed detector
JP2017053389A (en) * 2015-09-08 2017-03-16 株式会社ジェイテクト Bering device for wheel

Similar Documents

Publication Publication Date Title
JP5120695B2 (en) Rolling bearing device
JP4626979B2 (en) Wheel bearing device
JP5422868B2 (en) Axle bearing device
JP2005140320A5 (en)
JP2006144867A (en) Bearing device for wheel
JP4442457B2 (en) Rolling bearing device with sensor
JP2007198486A (en) Roll bearing device
JP3636201B1 (en) Rolling bearing unit with rotational speed detector
JP2008175382A (en) Rolling bearing unit for supporting wheel with rotating speed detector
JP5251922B2 (en) Drive wheel hub unit
JP2005331429A (en) Rolling bearing unit with encoder
JP4221944B2 (en) Sealing device
JP4508704B2 (en) Bearing device with sensor
JP2006153504A (en) Roller bearing device with sensor
JP2006275200A (en) Cover of rolling bearing device and rolling bearing device using this cover
JP4984251B2 (en) Rolling bearing device with sensor
JP2006275205A (en) Rolling bearing device
JP2009174705A (en) Rolling bearing device with sensor
JP2007321795A (en) Wheel rolling bearing device
JP2009257474A (en) Rolling bearing device with sensor
JP4829683B2 (en) Wheel bearing device
JP2008008448A (en) Sealing device of rolling bearing
JP2005273886A (en) Rolling bearing unit with rotating speed sensing device
JP5012392B2 (en) Rolling bearing device with sensor
JP2008002885A (en) Wheel bearing apparatus with wheel speed detector

Legal Events

Date Code Title Description
A621 Written request for application examination

Effective date: 20071026

Free format text: JAPANESE INTERMEDIATE CODE: A621

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20100601

A02 Decision of refusal

Effective date: 20101005

Free format text: JAPANESE INTERMEDIATE CODE: A02