JP2009186303A - センサ付車輪用軸受 - Google Patents
センサ付車輪用軸受 Download PDFInfo
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/0009—Force sensors associated with a bearing
- G01L5/0023—Force sensors associated with a bearing by using magnetic sensors
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B27/00—Hubs
- B60B27/0005—Hubs with ball bearings
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B27/00—Hubs
- B60B27/0047—Hubs characterised by functional integration of other elements
- B60B27/0068—Hubs characterised by functional integration of other elements the element being a sensor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B27/00—Hubs
- B60B27/0073—Hubs characterised by sealing means
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B27/00—Hubs
- B60B27/0094—Hubs one or more of the bearing races are formed by the hub
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- 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
- F16C19/52—Bearings with rolling contact, for exclusively rotary movement with devices affected by abnormal or undesired conditions
- F16C19/522—Bearings with rolling contact, for exclusively rotary movement with devices affected by abnormal or undesired conditions related to load on the bearing, e.g. bearings with load sensors or means to protect the bearing against overload
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- 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
- F16C33/76—Sealings of ball or roller bearings
- F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
- F16C33/7869—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted with a cylindrical portion to the inner surface of the outer race and having a radial portion extending inward
- F16C33/7879—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted with a cylindrical portion to the inner surface of the outer race and having a radial portion extending inward with a further sealing ring
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/0009—Force sensors associated with a bearing
- G01L5/0019—Force sensors associated with a bearing by using strain gages, piezoelectric, piezo-resistive or other ohmic-resistance based sensors
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
- G01P3/42—Devices characterised by the use of electric or magnetic means
- G01P3/44—Devices characterised by the use of electric or magnetic means for measuring angular speed
- G01P3/443—Devices characterised by the use of electric or magnetic means for measuring angular speed mounted in bearings
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
- G01P3/42—Devices characterised by the use of electric or magnetic means
- G01P3/44—Devices characterised by the use of electric or magnetic means for measuring angular speed
- G01P3/48—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage
- G01P3/481—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage of pulse signals
- G01P3/487—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage of pulse signals delivered by rotating magnets
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- 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
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- 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
- F16C41/00—Other accessories, e.g. devices integrated in the bearing not relating to the bearing function as such
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
【解決手段】 車輪用軸受は、外方部材1と内方部材2の対向し合う複列の転走面間に転動体を介在させたものである。外方部材1と内方部材2のうちの固定側部材に、車輪用軸受に作用する荷重を検出する荷重検出手段20を設け、外方部材1と内方部材2のうち回転側部材の回転を検出する回転検出手段40を設ける。荷重検出手段20の出力信号から回転側部材の回転速度を算出し、その回転速度から転動体5がその配列ピッチ分公転するのに要する時間を求め、その時間での荷重検出手段20の出力信号の平均値を算出する平均化処理手段30を設ける。この平均化処理手段30の算出値からタイヤ接地面に作用する荷重もしくは車輪用軸受に作用する荷重を推定する推定手段31を設ける。
【選択図】 図1
Description
例えば、車輪用軸受に対してある方向の荷重が大きくなる場合、固定輪フランジ面とナックル面の間は、最初は荷重よりも静止摩擦力の方が大きいため滑らないが、ある大きさを超えると静止摩擦力に打ち勝って滑るようになる。その状態で荷重を小さくしていくと、やはり最初は静止摩擦力により滑らないが、ある大きさになると滑るようになる。その結果、この変形が生じる部分で荷重を推定しようとすると、出力信号に図12のようなヒステリシスが生じる。ヒステリシスが生じると、検出分解能が低下する。
また、特許文献2に開示のように、外輪に歪みゲージを貼り付けるのでは、組立性に問題がある。
また、特許文献3に開示のセンサ付車輪用軸受では、車輪用軸受の転動体がセンサユニットの設置部の近傍を通過する毎にセンサユニットの出力信号の振幅が大きくなる。すなわち、センサユニットの出力信号が転動体の影響を受けた周期的な波形となり、荷重を精度良く検出できない。
車輪用軸受や、車輪のタイヤと路面間に荷重が作用すると、車輪用軸受の固定側部材(例えば外方部材)にも荷重が印加されて変形が生じ、その変形から荷重検出手段が荷重を検出する。荷重検出手段の出力信号は、そのままでは転動体の通過の影響を受けるが、平均化処理手段がその出力信号を平均化処理するので、転動体通過の影響が解消される。これにより、推定手段では、転動体の影響を受けることなく、車輪用軸受や、車輪のタイヤと路面間に作用する荷重(垂直方向荷重Fz ,駆動力や制動力となる荷重Fx ,軸方向荷重Fy )を精度良く推定できる。
このように、平面概形が均一幅の帯状である薄板材で歪み発生部材を構成した場合、歪み発生部材をコンパクトで低コストなものとできる。
内方部材2は回転側部材となるものであって、車輪取付用のハブフランジ9aを有するハブ輪9と、このハブ輪9の軸部9bのインボード側端の外周に嵌合した内輪10とでなる。これらハブ輪9および内輪10に、前記各列の転走面4が形成されている。ハブ輪9のインボード側端の外周には段差を持って小径となる内輪嵌合面12が設けられ、この内輪嵌合面12に内輪10が嵌合している。ハブ輪9の中心には貫通孔11が設けられている。ハブフランジ9aには、周方向複数箇所にハブボルト(図示せず)の圧入孔15が設けられている。ハブ輪9のハブフランジ9aの根元部付近には、車輪および制動部品(図示せず)を案内する円筒状のパイロット部13がアウトボード側に突出している。
センサユニット20は、外方部材1のアウトボード側列の転走面3の周辺となる軸方向位置に設けられるので、歪みセンサ22の出力信号は、図6のようにセンサユニット20の設置部の近傍を通過する転動体5の影響を受ける。すなわち、図6(A),(B)のように転動体5がセンサユニット20における歪みセンサ22に最も近い位置を通過するとき、歪みセンサ22の出力信号の振幅はピーク値となり、転動体5がその位置から遠ざかるにつれて低下する。転動体5は所定の配列ピッチPで前記センサユニット20の設置部の近傍を順次通過するので、歪みセンサ22の出力信号は、その振幅が転動体5の配列ピッチPを周期として図6(C)に実線で示すように周期的に変化する波形となる。そこで、前記平均化処理手段30は、転動体5が配列ピッチP分を公転する期間での前記出力信号の振幅を図6(C)に鎖線で示すように平均化して、転動体5の影響を解消する。なお図6(A)では、センサユニット20として、図5の構成例のものを示している。
・ センサユニット20の設置個数、設置場所や、接触固定部21a,歪みセンサ22 ,切欠き部21bの数
・ センサユニット20の形状、固定方法(接着、溶接など)、固定する向き(軸方向 の歪みを検出しても構わない)
また、歪み発生部材21の中央部には内面側に開口する1つの切欠き部21bが形成されている。歪みセンサ22は、歪み発生部材21における各方向の荷重に対して歪みが大きくなる箇所に貼り付けられる。ここでは、その箇所として、前記切欠き部21bの周辺、具体的には歪み発生部材21の外面側で切欠き部21bの背面側となる位置が選ばれており、歪みセンサ22は切欠き部21b周辺の歪みを検出する。
2…内方部材
3,4…転走面
5…転動体
20…センサユニット(荷重検出手段)
21…歪み発生部材
21a…接触固定部
21b…切欠き部
22…歪みセンサ
30…平均化処理手段
31…推定手段
40…回転検出器(回転検出手段)
40A…アンチロックブレーキシステム用センサ(回転検出手段)
Claims (5)
- 複列の転走面が内周に形成された外方部材と、前記転走面と対向する転走面が外周に形成された内方部材と、両部材の対向する転走面間に介在した複列の転動体とを備え、車体に対して車輪を回転自在に支持する車輪用軸受において、
上記外方部材および内方部材のうちの固定側部材に設けられ、車輪用軸受に作用する荷重を検出する荷重検出手段と、上記外方部材および内方部材のうちの回転側部材の回転を検出する回転検出手段と、この回転検出手段の出力信号から前記回転側部材の回転速度を算出し、その回転速度から前記転動体がその配列ピッチ分公転するのに要する時間を求め、その時間での前記荷重検出手段の出力信号の平均値を算出する平均化処理手段と、この平均化処理手段の算出値からタイヤ接地面に作用する荷重もしくは車輪用軸受に作用する荷重を推定する推定手段とを設けたことを特徴とするセンサ付車輪用軸受。 - 請求項1において、前記回転検出手段がアンチロックブレーキシステム用のセンサであるセンサ付車輪用軸受。
- 請求項1または請求項2において、前記荷重検出手段は、前記固定側部材に接触して固定される2つ以上の接触固定部を有する歪み発生部材、およびこの歪み発生部材に取付けられてこの歪み発生部材の歪みを検出する歪みセンサを有するセンサユニットからなり、前記各接触固定部は、前記固定側部材の外径面に対して、軸方向に同寸法となるように設けたセンサ付車輪用軸受。
- 請求項3において、前記歪み発生部材は、平面概形が均一幅の帯状、または平面概形が帯状で側辺部に切欠き部を有する薄板材からなるセンサ付車輪用軸受。
- 請求項3または請求項4において、前記センサユニットを、タイヤ接地面に対して上下位置および左右位置となる前記固定側部材の外径面の上面部、下面部、右面部、および左面部に配置したセンサ付車輪用軸受。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2008025989A JP5153373B2 (ja) | 2008-02-06 | 2008-02-06 | センサ付車輪用軸受 |
US12/735,655 US8397590B2 (en) | 2008-02-06 | 2009-01-27 | Bearing for wheel with sensor |
DE112009000269T DE112009000269T5 (de) | 2008-02-06 | 2009-01-27 | Radlager mit Sensor |
PCT/JP2009/000293 WO2009098843A1 (ja) | 2008-02-06 | 2009-01-27 | センサ付車輪用軸受 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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JP2008025989A JP5153373B2 (ja) | 2008-02-06 | 2008-02-06 | センサ付車輪用軸受 |
Publications (2)
Publication Number | Publication Date |
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JP2009186303A true JP2009186303A (ja) | 2009-08-20 |
JP5153373B2 JP5153373B2 (ja) | 2013-02-27 |
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JP2008025989A Expired - Fee Related JP5153373B2 (ja) | 2008-02-06 | 2008-02-06 | センサ付車輪用軸受 |
Country Status (4)
Country | Link |
---|---|
US (1) | US8397590B2 (ja) |
JP (1) | JP5153373B2 (ja) |
DE (1) | DE112009000269T5 (ja) |
WO (1) | WO2009098843A1 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2014009952A (ja) * | 2012-06-27 | 2014-01-20 | Ntn Corp | センサ付車輪用軸受装置 |
US8631681B2 (en) | 2010-11-12 | 2014-01-21 | Hyundai Motor Company | Apparatus and method of calculating a wheel speed by using a tire force sensor and chassis control system using the same |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102216635B (zh) * | 2008-11-17 | 2015-10-07 | Ntn株式会社 | 带有传感器的车轮轴承 |
DE102011078281A1 (de) | 2010-08-04 | 2012-02-09 | Continental Teves Ag & Co. Ohg | Sensoranordnung mit magnetischem Index-Encoder in einer Lagerdichtung |
CN107180416B (zh) * | 2017-05-17 | 2018-06-05 | 石家庄铁道大学 | 火车车轮踏面图像畸形校正方法及系统 |
GB2593711A (en) * | 2020-03-30 | 2021-10-06 | Airbus Operations Ltd | Sensor assembly |
Citations (3)
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JP2005048823A (ja) * | 2003-07-31 | 2005-02-24 | Koyo Seiko Co Ltd | センサ付きハブユニット |
JP2007064778A (ja) * | 2005-08-31 | 2007-03-15 | Ntn Corp | センサ付車輪用軸受 |
JP2007292158A (ja) * | 2006-04-24 | 2007-11-08 | Ntn Corp | センサ付車輪用軸受 |
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US3759344A (en) * | 1971-02-25 | 1973-09-18 | Ass Eng Ltd | Systems for land vehicles |
US5571056A (en) * | 1995-03-31 | 1996-11-05 | Gilbert; Raymond D. | Derailleur cable collet |
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FR2812356B1 (fr) * | 2000-07-28 | 2002-12-06 | Roulements Soc Nouvelle | Roulement comprenant au moins une zone de deformation elastique et ensemble de freinage le comprenant |
DE602004021470D1 (de) * | 2003-02-07 | 2009-07-23 | Jtekt Corp | Wälzlagereinheit mit sensor |
JP4925624B2 (ja) | 2005-08-23 | 2012-05-09 | Ntn株式会社 | センサ付車輪用軸受 |
WO2007018072A1 (ja) * | 2005-08-08 | 2007-02-15 | Ntn Corporation | センサ付車輪用軸受 |
JP2008025989A (ja) | 2006-07-15 | 2008-02-07 | Keio Gijuku | 局在表面プラズモン共鳴法と質量分析法によるリガンドの分析方法及びそのためのセンサー素子 |
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2008
- 2008-02-06 JP JP2008025989A patent/JP5153373B2/ja not_active Expired - Fee Related
-
2009
- 2009-01-27 US US12/735,655 patent/US8397590B2/en not_active Expired - Fee Related
- 2009-01-27 DE DE112009000269T patent/DE112009000269T5/de not_active Withdrawn
- 2009-01-27 WO PCT/JP2009/000293 patent/WO2009098843A1/ja active Application Filing
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JP2005048823A (ja) * | 2003-07-31 | 2005-02-24 | Koyo Seiko Co Ltd | センサ付きハブユニット |
JP2007064778A (ja) * | 2005-08-31 | 2007-03-15 | Ntn Corp | センサ付車輪用軸受 |
JP2007292158A (ja) * | 2006-04-24 | 2007-11-08 | Ntn Corp | センサ付車輪用軸受 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
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US8631681B2 (en) | 2010-11-12 | 2014-01-21 | Hyundai Motor Company | Apparatus and method of calculating a wheel speed by using a tire force sensor and chassis control system using the same |
JP2014009952A (ja) * | 2012-06-27 | 2014-01-20 | Ntn Corp | センサ付車輪用軸受装置 |
Also Published As
Publication number | Publication date |
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WO2009098843A1 (ja) | 2009-08-13 |
DE112009000269T5 (de) | 2011-05-05 |
US8397590B2 (en) | 2013-03-19 |
JP5153373B2 (ja) | 2013-02-27 |
US20100318304A1 (en) | 2010-12-16 |
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