JP2006177479A - Hub unit with sensor - Google Patents
Hub unit with sensor Download PDFInfo
- Publication number
- JP2006177479A JP2006177479A JP2004372608A JP2004372608A JP2006177479A JP 2006177479 A JP2006177479 A JP 2006177479A JP 2004372608 A JP2004372608 A JP 2004372608A JP 2004372608 A JP2004372608 A JP 2004372608A JP 2006177479 A JP2006177479 A JP 2006177479A
- Authority
- JP
- Japan
- Prior art keywords
- sensor
- fixed
- inner ring
- displacement
- detection sensor
- 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
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
- 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
-
- 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
Landscapes
- Rolling Contact Bearings (AREA)
Abstract
Description
この発明は、自動車を構成するハブユニットと自動車の各種情報を検出するセンサ装置とが一体化されたセンサ付きハブユニットに関する。 The present invention relates to a sensor-equipped hub unit in which a hub unit constituting an automobile and a sensor device for detecting various information of the automobile are integrated.
近年、自動車の制御手段として、ABS制御(アンチロックブレーキシステム)に加えて、発進時や加速時に駆動輪をスピンさせない駆動力制御やコーナリング時の横滑りを抑制するブレーキ力制御などが実施されているが、より精度のよい制御を行うために、これらの制御に有効に使用できるデータの検出が重要となっている。そこで、特許文献1には、車体側に固定される固定側軌道部材、車輪が取り付けられる回転側軌道部材、および両部材の間に配置された二列の転動体を有するハブユニットに、変位センサを設け、タイヤ(車輪)にかかる接地荷重を求め、車両制御の向上を図ることが提案されている。
上記特許文献1のセンサ付きハブユニットでは、変位センサを取り付けるための加工およびセンサを支持するための部材の追加が必要であり、コスト増となるという問題があった。
In the hub unit with a sensor of the above-mentioned
この発明の目的は、タイヤ接地荷重を求めるためのセンサを余分な加工を施すことなく取り付けることが可能なセンサ付きハブユニットを提供することにある。 An object of the present invention is to provide a sensor-equipped hub unit to which a sensor for obtaining a tire ground contact load can be attached without extra processing.
この発明によるセンサ付きハブユニットは、車体側に固定される固定側軌道部材、車輪取付け用のフランジ部を有する回転側軌道部材および両軌道部材の間に配置された転動体を有するハブユニットと、センサ装置とを備えているセンサ付きハブユニットにおいて、センサ装置は、固定側軌道部材の軸方向内側端部に嵌め合わされた環状の芯金と、芯金に一体成形されたセンサ固定用樹脂と、1つの車輪速検出センサと、少なくとも1つの変位センサとを有しており、センサ固定用樹脂は、芯金の外径にほぼ等しい外径を有する円板部、円板部の外周縁部に設けられている環状突出部、および円板部の中央部に設けられている円柱状突出部からなり、環状突出部に車輪速検出センサが固定されているとともに、円柱状突出部に各変位センサが固定されていることを特徴とするものである。 A hub unit with a sensor according to the present invention includes a fixed-side track member fixed to a vehicle body side, a rotation-side track member having a wheel mounting flange portion, and a hub unit having a rolling element disposed between both track members; In the sensor-equipped hub unit including the sensor device, the sensor device includes an annular cored bar fitted into the axially inner end of the fixed-side raceway member, a sensor fixing resin integrally formed with the cored bar, It has one wheel speed detection sensor and at least one displacement sensor, and the sensor fixing resin has a disk portion having an outer diameter substantially equal to the outer diameter of the core metal, and an outer peripheral edge portion of the disk portion. It is composed of an annular protrusion provided and a columnar protrusion provided at the center of the disc part, and a wheel speed detection sensor is fixed to the annular protrusion, and each displacement sensor is connected to the columnar protrusion. But And it is characterized in that it is a constant.
車輪速検出センサは、ホール素子センサ、磁気抵抗素子センサ、電磁誘導型センサなどとされ、回転側軌道部材には、所定間隔でスリットが設けられたパルサリングまたはS極とN極とが交互に設けられたパルサリングがセンサに対向するように取り付けられる。 The wheel speed detection sensor is a Hall element sensor, a magnetoresistive element sensor, an electromagnetic induction type sensor, or the like, and the rotation-side track member is provided with pulsar ring provided with slits at predetermined intervals or S poles and N poles alternately. The mounted pulsar ring is attached to face the sensor.
変位センサは、例えば、磁気インピーダンスセンサとされる。変位センサの設置箇所は、1カ所としてもよいが、タイヤ接地荷重の3方向分力を求めることを可能とするために、変位センサの数を少なくとも3つとすることが好ましい。 The displacement sensor is, for example, a magnetic impedance sensor. Although the number of installation positions of the displacement sensor may be one, it is preferable that the number of displacement sensors is at least three in order to obtain the three-way component force of the tire ground contact load.
センサ固定用樹脂は、車輪速検出センサを固定するだけであれば、芯金の外径にほぼ等しい外径を有する環状に形成され、その軸方向外側部分に車輪速検出センサが固定されるが、このセンサ固定用樹脂を、芯金の外径にほぼ等しい外径を有する円板部、円板部の外周縁部に設けられている環状突出部、および円板部の中央部に設けられている円柱状突出部からなるものとするとともに、環状突出部に車輪速検出センサ、円柱状突出部に各変位センサをそれぞれ固定することにより、車輪速検出センサが固定されているセンサ固定用樹脂にさらに変位センサが固定されたセンサ装置が得られる。 The sensor fixing resin is formed in an annular shape having an outer diameter substantially equal to the outer diameter of the metal core if the wheel speed detection sensor is only fixed, and the wheel speed detection sensor is fixed to the outer portion in the axial direction. The sensor fixing resin is provided at the disc portion having an outer diameter substantially equal to the outer diameter of the metal core, the annular protrusion provided at the outer peripheral edge of the disc portion, and the central portion of the disc portion. Sensor fixing resin in which the wheel speed detection sensor is fixed by fixing the wheel speed detection sensor to the annular protrusion and each displacement sensor to the cylindrical protrusion. In addition, a sensor device in which the displacement sensor is further fixed is obtained.
回転側軌道部材は、軌道溝を有する大径部および軌道溝の径よりも小さい外径を有する小径部を有している内軸と、内軸の小径部外径に嵌められている内輪とからなり、内軸の小径部の軸方向内側端面に設けられた環状の内輪固定用かしめ部が径方向外方にかしめられることにより内輪が内軸に固定されており、センサ固定用樹脂の円柱状突出部の先端部が内輪固定用かしめ部の内部に位置させられることで、各変位センサが小径部の軸方向内側端面または内輪固定用かしめ部の内周面に臨まされていることが好ましい。このようにすると、内輪を内軸に固定するためのかしめを行うことによって、変位センサに必要な被検出面が形成され、このかしめ以外の加工は必要ないので、より一層のコスト低減が可能となる。 The rotation-side raceway member includes an inner shaft having a large diameter portion having a raceway groove and a small diameter portion having an outer diameter smaller than the diameter of the raceway groove, and an inner ring fitted to the outer diameter of the small diameter portion of the inner shaft, The inner ring is fixed to the inner shaft by caulking the annular inner ring fixing caulking portion provided on the inner end surface in the axial direction of the small diameter portion of the inner shaft radially outward, and the sensor fixing resin circle It is preferable that the tip of the columnar protruding portion is positioned inside the inner ring fixing caulking portion so that each displacement sensor faces the axially inner end surface of the small diameter portion or the inner peripheral surface of the inner ring fixing caulking portion. . In this way, by performing caulking to fix the inner ring to the inner shaft, a surface to be detected necessary for the displacement sensor is formed, and processing other than this caulking is not required, and thus further cost reduction is possible. Become.
走行する車両の速度変化や姿勢変化に伴って、タイヤに掛かる接地荷重が変動し、このタイヤ接地荷重変動に応じて、固定側軌道部材に対する回転側軌道部材の位置が変化する。この位置の変化を、例えば、頂部、底部、前部および後部の計4カ所に変位センサを設置することにより検知し、各センサの出力からタイヤに作用する荷重を求めることができる。 The ground load applied to the tire fluctuates in accordance with the speed change and posture change of the traveling vehicle, and the position of the rotating side race member with respect to the fixed side race member changes according to the tire ground load change. This change in position can be detected, for example, by installing displacement sensors at a total of four locations at the top, bottom, front, and rear, and the load acting on the tire can be determined from the output of each sensor.
変位センサは、例えば、計8カ所に配置されており、これらは、内輪固定用かしめ部の内周面の頂部および底部に臨まされて車の浮き・沈み状態を検知する浮き・沈み検知センサと、内輪固定用かしめ部の内周面の前部および後部に臨まされて車の制動・加速状態を検知する制動・加速検知センサと、小径部の軸方向内側端面の頂部および底部に臨まされて旋回状態を検知する旋回検知センサと、小径部の軸方向内側端面の前部および後部に臨まされて転舵状態を検知する転舵検知センサとからなるものとされることがある。このようにすると、車両制御に必要な種々のデータを1つのセンサ装置から得ることができる。なお、浮き・沈み検知センサ、制動・加速検知センサ、旋回検知センサおよび転舵検知センサに優先順位を付け、例えば、転舵状態の検知が重要でない場合には、転舵検知センサを省略してもよいことはもちろんである。 The displacement sensors are arranged, for example, at a total of 8 locations, and these are lift / sink detection sensors that face the top and bottom of the inner peripheral surface of the inner ring fixing caulking part and detect the car's float / sink state. A braking / acceleration detection sensor for detecting the braking / acceleration state of the vehicle facing the front and rear of the inner peripheral surface of the inner ring fixing caulking portion, and the top and bottom of the axially inner end surface of the small diameter portion The turning detection sensor that detects the turning state and the turning detection sensor that faces the front and rear portions of the axially inner end surface of the small diameter portion and detects the turning state may be used. If it does in this way, various data required for vehicle control can be acquired from one sensor device. Prioritize the lift / sink detection sensor, braking / acceleration detection sensor, turning detection sensor, and steering detection sensor.For example, if the detection of the steering state is not important, omit the steering detection sensor. Of course it is good.
この発明のセンサ付きハブユニットによると、芯金に一体成形されかつ車輪速検出センサが固定されているセンサ固定用樹脂にさらに変位センサが固定されているので、車輪速検出センサと離れた位置に別個に変位センサを配置するものに比べて、変位センサを取り付けるためのハブユニットへの加工および変位センサを支持するための別部材が不要となり、コストの低減が可能となる。 According to the hub unit with a sensor of the present invention, since the displacement sensor is further fixed to the sensor fixing resin which is integrally formed on the metal core and to which the wheel speed detection sensor is fixed, it is located away from the wheel speed detection sensor. Compared with the case where the displacement sensor is separately arranged, the processing for the hub unit for attaching the displacement sensor and the separate member for supporting the displacement sensor are not required, and the cost can be reduced.
この発明の実施の形態を、以下図面を参照して説明する。 Embodiments of the present invention will be described below with reference to the drawings.
図1は、この発明のセンサ付きハブユニットの1実施形態を示している。以下の説明において、左右は図1の左右をいうものとする。なお、左が車両の内側に、右が車両の外側となっている。 FIG. 1 shows an embodiment of a sensor-equipped hub unit according to the present invention. In the following description, the left and right refer to the left and right in FIG. Note that the left is inside the vehicle and the right is outside the vehicle.
このセンサ付きハブユニットは、ハブユニット(1)と、その回転およびタイヤ接地荷重などを検出するセンサ装置(2)とを備えている。 This sensor-equipped hub unit includes a hub unit (1) and a sensor device (2) for detecting the rotation and tire ground contact load.
ハブユニット(1)は、車体側に固定される固定側軌道部材(3)、車輪が取り付けられる回転側軌道部材(4)、両部材(3)(4)の間に2列に配置された複数の転動体である玉(5)、および各列の玉(5)をそれぞれ保持する保持器(6)を備えている。 The hub unit (1) is arranged in two rows between the fixed side track member (3) fixed to the vehicle body side, the rotary side track member (4) to which the wheel is attached, and both members (3) and (4). A ball (5), which is a plurality of rolling elements, and a cage (6) for holding each row of balls (5) are provided.
固定側軌道部材(3)は、内周面に2列の外輪軌道が形成されている円筒部(12)と、円筒部(12)の左端部近くに設けられて懸架装置(車体)にボルトで取り付けられるフランジ部(13)とを有している。 The fixed-side track member (3) is provided near the left end of the cylindrical portion (12) with two rows of outer ring raceways formed on the inner peripheral surface, and bolts are attached to the suspension device (vehicle body). And a flange portion (13) to be attached.
回転側軌道部材(4)は、第1の軌道溝(15a)を有する大径部(15)および第1の軌道溝(15a)の径よりも小さい外径を有する小径部(16)を有している内軸(14)と、内軸(14)の小径部(16)外径に嵌め止められて右面が内軸(14)の大径部(15)左面に密接させられている内輪(17)とからなる。内軸(14)の右端近くには、車輪を取り付けるための複数のボルト(19)が固定されたフランジ部(18)が設けられている。内輪(17)の右部には、内軸(14)の軌道溝(15a)と並列するように、軌道溝(17a)が形成されている。固定側軌道部材(3)の右端部と内軸(14)との間には、シール装置(20)が設けられている。 The rotation side raceway member (4) has a large diameter portion (15) having a first raceway groove (15a) and a small diameter portion (16) having an outer diameter smaller than the diameter of the first raceway groove (15a). The inner ring (14), and the inner ring (14), the inner ring (14), which has a small diameter part (16) and is fitted to the outer diameter, and the right side is in close contact with the left side of the large diameter part (15) of the inner axis (14) (17) Near the right end of the inner shaft (14), a flange portion (18) to which a plurality of bolts (19) for attaching a wheel is fixed is provided. A raceway groove (17a) is formed on the right side of the inner ring (17) so as to be parallel to the raceway groove (15a) of the inner shaft (14). A sealing device (20) is provided between the right end portion of the fixed-side track member (3) and the inner shaft (14).
内軸(14)の小径部(16)の左端面(軸方向内側端面)(16a)には、環状の内輪固定用かしめ部(21)が設けられており、この内輪固定用かしめ部(21)の左端部が径方向外方にかしめられて内輪(17)を右方(軸方向外方)に押圧することにより、内輪(17)が内軸(14)に固定されている。 An annular inner ring fixing caulking portion (21) is provided on the left end surface (axial inner end surface) (16a) of the small diameter portion (16) of the inner shaft (14), and this inner ring fixing caulking portion (21 The inner ring (17) is fixed to the inner shaft (14) by pressing the inner ring (17) to the right (axially outward) by caulking the left end of) radially outward.
センサ装置(2)は、固定側軌道部材(3)の左端部(軸方向内側端部)内径に嵌め合わされた環状の芯金(7)と、芯金(7)に一体成形されたセンサ固定用樹脂(8)と、1つの車輪速検出センサ(9)と、車輪速検出センサ(9)に対向するように回転側軌道部材(4)の内輪(17)に固定されたパルサリング(10)と、計8つの変位センサ(11)と、各センサ(9)(11)の出力を処理する処理手段(図示略)とを有している。 The sensor device (2) includes an annular cored bar (7) fitted to the inner diameter of the left end (axially inner end) of the fixed side raceway member (3), and a sensor fixed integrally formed on the cored bar (7) Resin (8), one wheel speed detection sensor (9), and a pulsar ring (10) fixed to the inner ring (17) of the rotation side raceway member (4) so as to face the wheel speed detection sensor (9) And a total of eight displacement sensors (11) and processing means (not shown) for processing the outputs of the sensors (9) and (11).
センサ固定用樹脂(8)は、芯金(7)の外径にほぼ等しい外径を有する円板部(8a)、円板部(8a)の外周縁部に右方突出状に設けられている環状突出部(8b)、および円板部(8a)の中央部に右方突出状に設けられている円柱状突出部(8c)からなる。環状突出部(8b)は、その外周面がパルサリング(10)の径方向内方に若干の間隙をおいて位置するように形成され、円柱状突出部(8c)は、その先端部が内輪固定用かしめ部(21)の内部に位置するように形成されている。そして、環状突出部(8b)に車輪速検出センサ(9)が固定されており、円柱状突出部(8c)に各変位センサ(11)が固定されている。この実施形態では、変位センサ(11)は、小径部(16)の左端面(16a)に臨まされる位置と内輪固定用かしめ部(21)の内周面に臨まされる位置との両方にそれぞれ設けられている。円板部(8a)の底部には、車体側に設けられた処理手段とセンサ装置(2)とを結ぶハーネスを取り付けるためのコネクタ部(22)が左方突出状に一体に成形されている。コネクタ部(22)には信号用のコネクタピン(23)が設けられており、車輪速検出センサ(9)とコネクタピン(23)とが、リード線(図示略)を介して接続されている。円板部(8a)には、さらに、変位センサ(11)の出力を外部に取り出すためのコネクタ部(24)が左方突出状に一体に成形されている。 The sensor fixing resin (8) is provided on the outer peripheral edge of the disc portion (8a) and the disc portion (8a) having an outer diameter substantially equal to the outer diameter of the core metal (7). And an annular protrusion (8b), and a columnar protrusion (8c) provided in the center of the disc part (8a) so as to protrude rightward. The annular protrusion (8b) is formed so that its outer peripheral surface is located with a slight gap radially inward of the pulsar ring (10), and the tip of the cylindrical protrusion (8c) is fixed to the inner ring. It is formed so as to be located inside the caulking portion (21). The wheel speed detection sensor (9) is fixed to the annular protrusion (8b), and each displacement sensor (11) is fixed to the columnar protrusion (8c). In this embodiment, the displacement sensor (11) is located at both the position facing the left end surface (16a) of the small diameter portion (16) and the position facing the inner peripheral surface of the inner ring fixing caulking portion (21). Each is provided. A connector portion (22) for attaching a harness connecting the processing means provided on the vehicle body side and the sensor device (2) is integrally formed on the bottom portion of the disc portion (8a) so as to protrude leftward. . The connector part (22) is provided with a signal connector pin (23), and the wheel speed detection sensor (9) and the connector pin (23) are connected via a lead wire (not shown). . Further, a connector part (24) for taking out the output of the displacement sensor (11) to the outside is integrally formed in the disc part (8a) so as to protrude leftward.
車輪速検出センサ(9)は、環状永久磁石(9a)と環状コイル(9b)とを組み合わせたもので、この構成は公知のものであり、パルサリング(10)の回転に伴う磁束密度の変化を検出することで、内輪(17)の回転速度したがって車輪速などの回転情報を検出することができる。 The wheel speed detection sensor (9) is a combination of an annular permanent magnet (9a) and an annular coil (9b), and this configuration is well known, and changes in magnetic flux density accompanying rotation of the pulsar ring (10). By detecting, rotation information such as the rotation speed of the inner ring (17), that is, the wheel speed can be detected.
固定側軌道部材(3)および回転側軌道部材(4)は、軸受鋼(磁性体)で形成されており、したがって、両部材(3)(4)間の距離(変位)は、磁束密度の変化によって変位を求める磁気インピーダンスセンサ等の変位センサ(11)で検出することができる。 The fixed-side raceway member (3) and the rotary-side raceway member (4) are made of bearing steel (magnetic material). Therefore, the distance (displacement) between the two members (3) and (4) is the magnetic flux density. The displacement can be detected by a displacement sensor (11) such as a magnetic impedance sensor for obtaining a displacement by a change.
次いで、図2を参照して、この発明のセンサ付きハブユニットの要部である各変位センサ(11a)(11b)(11c)(11d)(11e)(11f)(11g)(11h)(図1では、符号(11)で総称したが、以下では、個々の変位センサに異なる符号を付けて説明する。)の配置箇所について説明する。 Next, referring to FIG. 2, each displacement sensor (11a) (11b) (11c) (11d) (11e) (11f) (11g) (11h) (FIG. In FIG. 1, the arrangement location of (11) is generically referred to, but in the following description, each displacement sensor is given a different symbol.
同図に示すように、センサ固定用樹脂(8)の円柱状突出部(8c)は、その先端部外周面が内輪固定用かしめ部(21)の径方向内方に若干の間隙をおいて位置しかつその先端面が小径部(16)の左端面(軸方向内側端面)(16a)に若干の間隙をおいて位置するように形成されている。そして、変位センサ(11a)(11b)(11c)(11d)(11e)(11f)(11g)(11h)は、計8カ所に配置されており、これらは、内輪固定用かしめ部(21)の内周面の頂部および底部に臨まされて車の浮き・沈み状態を検知する浮き・沈み検知センサ(11a)(11b)と、内輪固定用かしめ部(21)の内周面の前部および後部に臨まされて車の制動・加速状態を検知する制動・加速検知センサ(11c)(11d)と、小径部(16)の左端面(16a)の頂部および底部に臨まされて旋回状態を検知する旋回検知センサ(11e)(11f)と、小径部(16)の左端面(16a)の前部および後部に臨まされて転舵状態を検知する転舵検知センサ(11g)(11h)とされている。 As shown in the figure, the cylindrical protrusion (8c) of the resin for fixing the sensor (8) has an outer peripheral surface at the tip part with a slight gap radially inward of the caulking part for fixing the inner ring (21). The tip end surface of the small-diameter portion (16) is positioned so as to be positioned with a slight gap on the left end surface (inner end surface in the axial direction) (16a). The displacement sensors (11a), (11b), (11c), (11d), (11e), (11f), (11g), and (11h) are arranged in a total of eight locations, and these are the inner ring fixing caulking portions (21). The float / sink detection sensors (11a) and (11b) that face the top and bottom of the inner peripheral surface of the vehicle and detect the state of the car's float and sink, and the front part of the inner peripheral surface of the inner ring fixing caulking part (21) and A braking / acceleration detection sensor (11c) (11d) that faces the rear and detects the braking / acceleration state of the car, and a turning state is detected facing the top and bottom of the left end surface (16a) of the small-diameter portion (16). Turning detection sensors (11e) and (11f), and turning detection sensors (11g) and (11h) that face the front and rear of the left end face (16a) of the small diameter portion (16) and detect the turning state. ing.
これらの変位センサ(11a)(11b)(11c)(11d)(11e)(11f)(11g)(11h)によると、内輪固定用かしめ部(21)の内周面の頂部に臨まされた浮き・沈み検知センサ(11a)による変位から底部に臨まされた浮き・沈み検知センサ(11b)による変位を引いたものが正の時には、車が沈み状態(垂直荷重が増加した状態)であることが分かり、これが逆に負の時は、車が浮いている状態(垂直荷重が減少した状態)であることが分かり、内輪固定用かしめ部(21)の内周面の前部に臨まされた制動・加速検知センサ(11c)による変位から後部に臨まされた制動・加速検知センサ(11d)による変位を引いたものが正の時には、制動状態(後向きの荷重が増加した状態)であることが分かり、これが逆に負の時は、加速状態(前向きの荷重が増加した状態)であることが分かる。また、小径部(16)の左端面(16a)の頂部に臨まされた旋回検知センサ(11e)による変位から底部に臨まされた旋回検知センサ(11f)による変位を引いたものが横荷重の増減を(旋回)を表し、小径部(16)の左端面(16a)の前部に臨まされた転舵検知センサ(11g)による変位から後部に臨まされた転舵検知センサ(11h)を引いたものが転舵による荷重の増減を表すことができる。したがって、各変位センサ(11a)(11b)(11c)(11d)(11e)(11f)(11g)(11h)の出力と荷重との関係を予め求めておくことにより、車両走行時に変化する荷重を変位センサ(11a)(11b)(11c)(11d)(11e)(11f)(11g)(11h)の出力から得ることができる。 According to these displacement sensors (11a), (11b), (11c), (11d), (11e), (11f), (11g), and (11h), the floating that is faced to the top of the inner peripheral surface of the inner ring fixing caulking portion (21) -If the displacement of the sink detection sensor (11a) minus the displacement of the float / sink detection sensor (11b) facing the bottom is positive, the car may be in a sinking state (a state where the vertical load has increased) When this is negative, it turns out that the car is in a floating state (the vertical load is reduced), and the braking applied to the front part of the inner peripheral surface of the inner ring fixing caulking part (21)・ When the displacement of the acceleration detection sensor (11c) minus the displacement of the rear-facing braking / acceleration detection sensor (11d) is positive, it indicates that the vehicle is in the braking state (the rearward load increases). On the contrary, when this is negative, it is understood that the vehicle is in an accelerated state (a state where the forward load is increased). Also, the lateral load increase / decrease is obtained by subtracting the displacement of the turning detection sensor (11f) facing the bottom from the displacement of the turning detection sensor (11e) facing the top of the left end surface (16a) of the small diameter portion (16). Represents turning, and the steering detection sensor (11h) facing the rear is subtracted from the displacement of the steering detection sensor (11g) facing the front of the left end face (16a) of the small diameter section (16) Things can represent the increase or decrease in load due to steering. Therefore, the load that changes when the vehicle travels can be determined by obtaining the relationship between the output of each displacement sensor (11a), (11b), (11c), (11d), (11e), (11f), (11g), and (11h) in advance. Can be obtained from the outputs of the displacement sensors (11a) (11b) (11c) (11d) (11e) (11f) (11g) (11h).
(1) ハブユニット
(2) センサ装置
(3) 固定側軌道部材
(4) 回転側軌道部材
(5) 玉(転動体)
(7) 芯金
(8) センサ固定用樹脂
(8a) 円板部
(8b) 環状突出部
(8c) 円柱状突出部
(9) 車輪速検出センサ
(11) 変位センサ
(11a)(11b) 浮き・沈み検知センサ
(11c)(11d) 制動・加速検知センサ
(11e)(11f) 旋回検知センサ
(11g)(11h) 転舵検知センサ
(14) 内軸
(15) 大径部
(15a) 第1の軌道溝
(16) 小径部
(16a) 左端面(軸方向内側端面)
(21) 内輪固定要かしめ部
(1) Hub unit
(2) Sensor device
(3) Fixed side raceway member
(4) Rotating track member
(5) Ball (rolling element)
(7) Core
(8) Sensor fixing resin
(8a) Disc part
(8b) Annular protrusion
(8c) Cylindrical protrusion
(9) Wheel speed detection sensor
(11) Displacement sensor
(11a) (11b) Float / sink detection sensor
(11c) (11d) Brake / acceleration detection sensor
(11e) (11f) Turn detection sensor
(11g) (11h) Steering detection sensor
(14) Inner shaft
(15) Large diameter part
(15a) First track groove
(16) Small diameter part
(16a) Left end face (Axial inner end face)
(21) Inner ring fixing required caulking section
Claims (3)
センサ装置は、固定側軌道部材の軸方向内側端部に嵌め合わされた環状の芯金と、芯金に一体成形されたセンサ固定用樹脂と、1つの車輪速検出センサと、少なくとも1つの変位センサとを有しており、センサ固定用樹脂は、芯金の外径にほぼ等しい外径を有する円板部、円板部の外周縁部に設けられている環状突出部、および円板部の中央部に設けられている円柱状突出部からなり、環状突出部に車輪速検出センサが固定されているとともに、円柱状突出部に各変位センサが固定されていることを特徴とするセンサ付きハブユニット。 With a sensor comprising a fixed side raceway member fixed to the vehicle body side, a rotation side raceway member having a wheel mounting flange, a hub unit having a rolling element arranged between both raceway members, and a sensor device In the hub unit,
The sensor device includes an annular cored bar fitted to an axially inner end of the fixed-side track member, a sensor fixing resin integrally formed on the cored bar, one wheel speed detection sensor, and at least one displacement sensor. The sensor fixing resin has a disk portion having an outer diameter substantially equal to the outer diameter of the core metal, an annular protrusion provided on the outer peripheral edge of the disk portion, and a disk portion A sensor-equipped hub comprising a cylindrical protrusion provided at the center, wherein a wheel speed detection sensor is fixed to the annular protrusion, and each displacement sensor is fixed to the cylindrical protrusion. unit.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004372608A JP2006177479A (en) | 2004-12-24 | 2004-12-24 | Hub unit with sensor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004372608A JP2006177479A (en) | 2004-12-24 | 2004-12-24 | Hub unit with sensor |
Publications (1)
Publication Number | Publication Date |
---|---|
JP2006177479A true JP2006177479A (en) | 2006-07-06 |
Family
ID=36731756
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2004372608A Pending JP2006177479A (en) | 2004-12-24 | 2004-12-24 | Hub unit with sensor |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2006177479A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009144858A (en) * | 2007-12-17 | 2009-07-02 | Jtekt Corp | Rolling bearing device with sensor |
JP2011037374A (en) * | 2009-08-11 | 2011-02-24 | Nissan Motor Co Ltd | Vehicle attitude detector and method of the same |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH1068738A (en) * | 1996-08-28 | 1998-03-10 | Nippon Seiko Kk | Rolling bearing unit with rotating speed detector |
JPH11174071A (en) * | 1997-12-15 | 1999-07-02 | Nippon Seiko Kk | Rolling bearing unit with rotating speed detector |
JP2000211309A (en) * | 1999-01-19 | 2000-08-02 | Koyo Seiko Co Ltd | Bearing device for axle |
JP2004045219A (en) * | 2002-07-11 | 2004-02-12 | Nsk Ltd | Rolling bearing unit for wheel supporting with load-measuring device |
-
2004
- 2004-12-24 JP JP2004372608A patent/JP2006177479A/en active Pending
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH1068738A (en) * | 1996-08-28 | 1998-03-10 | Nippon Seiko Kk | Rolling bearing unit with rotating speed detector |
JPH11174071A (en) * | 1997-12-15 | 1999-07-02 | Nippon Seiko Kk | Rolling bearing unit with rotating speed detector |
JP2000211309A (en) * | 1999-01-19 | 2000-08-02 | Koyo Seiko Co Ltd | Bearing device for axle |
JP2004045219A (en) * | 2002-07-11 | 2004-02-12 | Nsk Ltd | Rolling bearing unit for wheel supporting with load-measuring device |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009144858A (en) * | 2007-12-17 | 2009-07-02 | Jtekt Corp | Rolling bearing device with sensor |
JP2011037374A (en) * | 2009-08-11 | 2011-02-24 | Nissan Motor Co Ltd | Vehicle attitude detector and method of the same |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US7212927B2 (en) | Load-measuring device for rolling bearing unit and rolling bearing unit for load measurement | |
JP4333259B2 (en) | Rolling bearing unit with rotational speed detector | |
EP1627156B1 (en) | Rotary device with sensor and method for forming apparatus for measuring load on rolling bearing unit | |
JP2005042866A5 (en) | ||
JP2006057817A (en) | Bearing device for wheel with sensor | |
JP2005133772A (en) | Seal device and rolling bearing device using the same | |
JPH09251028A (en) | Rolling bearing unit with rotation speed detecting device | |
JPH11118816A (en) | Rolling bearing unit with rotating speed detector | |
JP2007303522A (en) | Hub unit | |
JP2007127142A (en) | Seal device with sensor and rolling bearing device using the same | |
JP2006177479A (en) | Hub unit with sensor | |
JP4135399B2 (en) | Hub unit with sensor | |
JP3834977B2 (en) | Rolling bearing unit with rotational speed detector | |
JP2003307229A (en) | Bearing with built-in pulse forming ring and hub unit bearing | |
JP2008292275A (en) | Load measuring instrument for rolling bearing unit | |
JP4829683B2 (en) | Wheel bearing device | |
JP2008144950A (en) | Rotating speed detecting device, sealing device including the same, and wheel rolling bearing | |
JP4029811B2 (en) | Hub unit with sensor | |
JP2008175284A (en) | Wheel bearing device | |
JP4498064B2 (en) | Wheel bearing device | |
JP2009103549A (en) | Device for measuring state of quantity of rolling bearing unit | |
JP2004354102A (en) | Encoder, and rolling bearing unit having the same | |
JP4151438B2 (en) | Rolling bearing unit with sensor | |
JP2008256600A (en) | Rotation speed detection device and rolling bearing device using the same | |
JP2003097581A (en) | Rotary encoder built in bearing unit |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20071107 |
|
A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20090930 |
|
A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20091013 |
|
A02 | Decision of refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A02 Effective date: 20100316 |