JP3666556B2 - Axle bearing apparatus - Google Patents

Axle bearing apparatus Download PDF

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Publication number
JP3666556B2
JP3666556B2 JP04873199A JP4873199A JP3666556B2 JP 3666556 B2 JP3666556 B2 JP 3666556B2 JP 04873199 A JP04873199 A JP 04873199A JP 4873199 A JP4873199 A JP 4873199A JP 3666556 B2 JP3666556 B2 JP 3666556B2
Authority
JP
Japan
Prior art keywords
ring member
inner ring
fixed
outer ring
peripheral surface
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.)
Expired - Fee Related
Application number
JP04873199A
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Japanese (ja)
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JP2000211309A (en
Inventor
基司 河村
藤夫 春海
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.)
Koyo Seiko Co Ltd
Original Assignee
Koyo Seiko Co Ltd
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 Koyo Seiko Co Ltd filed Critical Koyo Seiko Co Ltd
Priority to JP04873199A priority Critical patent/JP3666556B2/en
Publication of JP2000211309A publication Critical patent/JP2000211309A/en
Application granted granted Critical
Publication of JP3666556B2 publication Critical patent/JP3666556B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Description

【０００１】
【発明の属する技術分野】
この発明は、例えば自動車の車輪の回転速度をセンサにより検出する車軸用軸受装置に関する。
【０００２】
【従来の技術】
従来、車輪回転速度検出器を備えた車軸用軸受装置としては、図２（実開平６３−１８９７７５号公報）のものが知られている。この軸受装置は、車体側に固定された外輪部材２０と、外輪部材２０に同心的にかつ転動体２３を介して相対回転可能に配置された内輪部材２１と、軸端部２２ａに内輪部材２１を一体的に結合しかつ反軸端部２２ｂで車輪側に固定された回転軸部材２２を備え、この内輪部材２１は、固定軸部材２２の軸端部２２ａに螺合されたナット２４にて回転軸部材２２に一体的に固定され、このナット２４にセンサ２６によって回転速度が検出されるためのパルサギヤ２５が形成されている。
【０００３】
【発明が解決しようとする課題】
しかしながら、上記従来の車軸用軸受装置においては、内輪部材２１をナット２４にて固定する構造であるため、部品点数が多くなるとともに、軸受装置の軸方向におけるコンパクト化が難しいという問題があった。
【０００４】
そこで、この発明の目的は、部品点数を減らししかも軸方向にコンパクトになる車軸用軸受装置を提供することにある。
【０００５】
【課題を解決するための手段】
上記課題を解決するための手段として、車体側に固定された外輪部材と、外輪部材に同心的にかつ転動体を介して相対回転可能に配置された内輪部材と、少なくとも軸端部に内輪部材を一体的に嵌合しかつ反軸端部で車輪側に固定された回転軸部材を備えた車軸用軸受装置において、上記軸端部の端面中央部に内周面が回転軸部材の軸線にほぼ平行な平坦面とされた凹部が形成され、この凹部の端部を径方向外方に塑性変形させて形成した拡径部にて上記内輪部材が上記回転軸部材に固定され、上記凹部の内周面に円周方向等間隔の複数の突起が形成されてセンサにより回転速度が検出されるパルサギヤとされたことを特徴とする。
【０００６】
【発明の実施の形態】
以下、この発明の具体的実施の形態について図面を参照して説明する。
図１は、この発明にかかる一実施例である車軸用軸受装置の断面図である。すなわち、１は図示しない車体に固定された外輪部材、２は外輪部材に同心的に配置された内輪部材、３は内輪部材２を軸端部３ａに形成された段付き部３ｄに圧入により一体的に結合しかつ反軸端部３ｂで図示しない車輪側に固定された回転軸部材である。４，５はそれぞれ保持器６，７に保持された転動体で、内輪部材２の外周面に形成された軌道２ａと該軌道２ａに対向するよう外輪部材１の一端部内周面に形成された軌道１ａ間、および回転軸部材３の反軸端部３ｂに直接形成された軌道３ｅと外輪部材１の他端部内周面に形成された軌道１ｂ間にそれぞれ回転自在に配置されている。これにより、外輪部材１と、内輪部材２および回転軸部材３とは転動体４，５を介して互いに相対回転可能とされている。なお、実施例では、回転軸部材３の反軸端部３ｂに直接軌道３ｅが形成されているが、必要により内輪部材２と同様の別体の内輪部材を圧入固定し、転動体５を配置する構成としてもよい。また、１１は、外輪部材１と回転軸部材３の反軸端部３ｂとの間に配置された密封部材であり、さらに、１２は、外輪部材１に固定され軸端部３ａを覆うカバーであり、このカバー１２と上記密封部材１１により軸受部を両側から完全密封している。
【０００７】
上記軸端部３ａの端面中央部には、内周面８ａが回転軸部材３の軸線にほぼ平行な平坦面とされた凹部８が形成され、この凹部８の端部には、ローリング加工にて全周を径方向外方に塑性変形させた拡径部９が形成され、この拡径部９にて上記内輪部材２が上記回転軸部材３に固定されている。また、上記凹部８の内周面８ａには、所定の軸方向長さを有しかつ円周方向に等間隔の複数突起１０が形成されてパルサギヤＧとされている。さらに、上記カバー１２の中央部の孔部１３には、上記パルサギヤＧに対向するよう検出部１４ａが凹部８内に挿入されたセンサ１４が取り付けられ、これにより、車輪回転速度が検出される。
【０００８】
【発明の効果】
この発明にかかる車軸用軸受装置は、以上詳述したように、軸端部の端面中央部に内周面が回転軸部材の軸線にほぼ平行な平坦面とされた凹部が形成され、この凹部の端部を径方向外方に塑性変形させて形成した拡径部にて上記内輪部材が上記回転軸部材に固定され、上記凹部の内周面に円周方向等間隔の複数の突起が形成されてセンサにより回転速度が検出されるパルサギヤとされた構成としたため、部品点数が減少するとともに、軸方向にコンパクトになる。
【図面の簡単な説明】
【図１】この発明にかかる一実施例である車軸用軸受装置の断面図である。
【図２】従来の車軸用軸受装置の断面図である。
【符号の説明】
１ 外輪部材
２ 内輪部材
３ 回転軸部材
３ａ 軸端部
３ｂ 反軸端部
４ 転動体
８ 凹部
８ａ 内周面
９ 拡径部
１０ 突起
１２ カバー
１４ センサ
Ｇ パルサギヤ[0001]
BACKGROUND OF THE INVENTION
The present invention relates to, for example, an axle bearing apparatus for detecting by the sensor the rotational speed of the wheels of the vehicle.
[0002]
[Prior art]
Conventionally, as a bearing apparatus for an axle provided with a wheel rotational speed detector is known from FIG. 2 (real Hei 63-189775 Patent Publication). This bearing device includes an outer ring member 20 fixed to the vehicle body side, an inner ring member 21 concentrically arranged on the outer ring member 20 and relatively rotatable via a rolling element 23, and an inner ring member 21 at a shaft end 22a. And a rotating shaft member 22 fixed to the wheel side at the opposite shaft end portion 22b. The inner ring member 21 is secured by a nut 24 screwed to the shaft end portion 22a of the fixed shaft member 22. integrally fixed to the rotary shaft member 22, pulsar gear 25 is formed for the rotational speed is detected by the sensor 26 on the nut 24.
[0003]
[Problems to be solved by the invention]
However, since the conventional axle bearing device has a structure in which the inner ring member 21 is fixed by the nut 24, there are problems that the number of parts increases and it is difficult to make the bearing device compact in the axial direction.
[0004]
Accordingly, an object of the present invention is to provide an axle bearing device that reduces the number of parts and is compact in the axial direction.
[0005]
[Means for Solving the Problems]
As means for solving the above problems, an outer ring member fixed to the vehicle body side, an inner ring member concentrically arranged on the outer ring member and disposed so as to be relatively rotatable via a rolling element, and an inner ring member at least at a shaft end portion In the axle bearing device provided with the rotating shaft member that is integrally fitted and fixed to the wheel side at the opposite shaft end portion, the inner peripheral surface is at the axis of the rotating shaft member at the center portion of the end surface of the shaft end portion. A concave portion having a substantially parallel flat surface is formed, and the inner ring member is fixed to the rotary shaft member at an enlarged diameter portion formed by plastic deformation of an end portion of the concave portion radially outward. equal circumferential intervals of the plurality of protrusions are formed on the inner peripheral surface speed by sensor is characterized in that it is a pulsar gear to be detected.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, specific embodiments of the present invention will be described with reference to the drawings.
Figure 1 is a cross-sectional view of an axle bearing apparatus which is an embodiment according to the present invention. That is, 1 is an outer ring member fixed to a vehicle body (not shown), 2 is an inner ring member concentrically arranged on the outer ring member, and 3 is an integral part of the inner ring member 2 by press fitting into a stepped portion 3d formed on the shaft end 3a. And a rotating shaft member fixed to the wheel side (not shown) at the opposite shaft end 3b. 4 and 5 are rolling elements held by the cages 6 and 7, respectively, formed on the outer peripheral surface of the inner ring member 2 and on the inner peripheral surface of one end portion of the outer ring member 1 so as to face the track 2a. Between the tracks 1a and between the track 3e formed directly on the opposite shaft end portion 3b of the rotary shaft member 3 and the track 1b formed on the inner peripheral surface of the other end portion of the outer ring member 1, they are rotatably arranged. As a result, the outer ring member 1, the inner ring member 2, and the rotating shaft member 3 can be rotated relative to each other via the rolling elements 4 and 5. In the embodiment, the track 3e is formed directly on the opposite shaft end 3b of the rotary shaft member 3. However, if necessary, a separate inner ring member similar to the inner ring member 2 is press-fitted and arranged, and the rolling elements 5 are arranged. It is good also as composition to do. Further, 11 is a sealing member disposed between the outer ring member 1 and the opposite shaft end 3b of the rotary shaft member 3, and 12 is a cover that is fixed to the outer ring member 1 and covers the shaft end 3a. There, completely seal the bearing portion from both sides by the cover 12 and the sealing member 11.
[0007]
A concave portion 8 having an inner peripheral surface 8a that is a flat surface substantially parallel to the axis of the rotary shaft member 3 is formed at the center of the end surface of the shaft end portion 3a. The end of the concave portion 8 is subjected to rolling processing. Te enlarged diameter portion 9 is plastically deformed is formed all around radially outwardly, the inner ring member 2 is fixed to the rotary shaft member 3 in the enlarged diameter portion 9. Further, the inner peripheral surface 8a of the recess 8 is a pulsar gear G has a predetermined axial length equal intervals multiple projections 10 in the circumferential direction are formed. Further, a sensor 14 having a detection portion 14a inserted into the recess 8 is attached to the hole 13 at the center of the cover 12 so as to face the pulsar gear G, whereby the wheel rotation speed is detected.
[0008]
【The invention's effect】
In the axle bearing device according to the present invention, as described in detail above, a concave portion having an inner peripheral surface which is a flat surface substantially parallel to the axis of the rotary shaft member is formed in the central portion of the end surface of the shaft end portion. The inner ring member is fixed to the rotary shaft member at the enlarged diameter portion formed by plastically deforming the end portion of the recess radially outward, and a plurality of circumferentially spaced projections are formed on the inner peripheral surface of the recess. due to a configuration which is a has been pulsar gear the rotational speed is detected by the sensor, the number of components is reduced, and a compact in the axial direction.
[Brief description of the drawings]
1 is a cross-sectional view of an axle bearing apparatus which is an embodiment according to the present invention.
2 is a cross-sectional view of a conventional axle bearing device.
[Explanation of symbols]
1 the outer ring member 2 inner ring member 3 rotating shaft 3a shaft end 3b axially opposite end portions 4 rolling bodies 8 recess 8a in the circumferential surface 9 expanded diameter section 10 projection 12 cover 14 sensor G pulsar gear

Claims (1)

車体側に固定された外輪部材と、外輪部材に同心的にかつ転動体を介して相対回転可能に配置された内輪部材と、少なくとも軸端部に内輪部材を一体的に嵌合しかつ反軸端部で車輪側に固定された回転軸部材を備えた車軸用軸受装置において、上記軸端部の端面中央部に内周面が回転軸部材の軸線にほぼ平行な平坦面とされた凹部が形成され、この凹部の端部を径方向外方に塑性変形させて形成した拡径部にて上記内輪部材が上記回転軸部材に固定され、上記凹部の内周面に円周方向等間隔の複数の突起が形成されてセンサにより回転速度が検出されるパルサギヤとされたことを特徴とする車軸用軸受装置。An outer ring member fixed to the vehicle body side, an inner ring member concentrically arranged on the outer ring member and relatively rotatable via a rolling element, an inner ring member integrally fitted to at least the shaft end portion and a counter shaft In the bearing device for an axle provided with the rotating shaft member fixed to the wheel side at the end, a concave portion whose inner peripheral surface is a flat surface substantially parallel to the axis of the rotating shaft member is provided at the center of the end surface of the shaft end. The inner ring member is fixed to the rotary shaft member at an enlarged diameter portion formed by plastically deforming the end portion of the recess radially outward, and the inner peripheral surface of the recess is equidistant in the circumferential direction. An axle bearing device comprising a plurality of protrusions and a pulsar gear whose rotation speed is detected by a sensor.
JP04873199A 1999-01-19 1999-01-19 Axle bearing apparatus Expired - Fee Related JP3666556B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP04873199A JP3666556B2 (en) 1999-01-19 1999-01-19 Axle bearing apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP04873199A JP3666556B2 (en) 1999-01-19 1999-01-19 Axle bearing apparatus

Publications (2)

Publication Number Publication Date
JP2000211309A JP2000211309A (en) 2000-08-02
JP3666556B2 true JP3666556B2 (en) 2005-06-29

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ID=12811446

Family Applications (1)

Application Number Title Priority Date Filing Date
JP04873199A Expired - Fee Related JP3666556B2 (en) 1999-01-19 1999-01-19 Axle bearing apparatus

Country Status (1)

Country Link
JP (1) JP3666556B2 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10150613B4 (en) 2001-10-12 2004-07-22 Visteon Global Technologies, Inc., Dearborn Wheel bearing unit for motor vehicles
JP2006177479A (en) * 2004-12-24 2006-07-06 Jtekt Corp Hub unit with sensor
KR102097936B1 (en) * 2013-11-19 2020-04-07 현대모비스 주식회사 Integrated Wheel Speed Measuring Device
US11421736B2 (en) 2018-07-04 2022-08-23 Nsk Ltd. Rolling bearing unit

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JP2000211309A (en) 2000-08-02

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