JP2007153226A - Bearing device for wheel - Google Patents

Bearing device for wheel Download PDF

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Publication number
JP2007153226A
JP2007153226A JP2005353787A JP2005353787A JP2007153226A JP 2007153226 A JP2007153226 A JP 2007153226A JP 2005353787 A JP2005353787 A JP 2005353787A JP 2005353787 A JP2005353787 A JP 2005353787A JP 2007153226 A JP2007153226 A JP 2007153226A
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Japan
Prior art keywords
knuckle
wheel
bearing device
vehicle body
bolt
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Pending
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JP2005353787A
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Japanese (ja)
Inventor
Takami Ozaki
孝美 尾崎
Tomoumi Ishikawa
智海 石河
Kentaro Nishikawa
健太郎 西川
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NTN Corp
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NTN Corp
NTN Toyo Bearing Co Ltd
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Application filed by NTN Corp, NTN Toyo Bearing Co Ltd filed Critical NTN Corp
Priority to JP2005353787A priority Critical patent/JP2007153226A/en
Publication of JP2007153226A publication Critical patent/JP2007153226A/en
Pending legal-status Critical Current

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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
    • G01L5/0019—Force sensors associated with a bearing by using strain gages, piezoelectric, piezo-resistive or other ohmic-resistance based sensors
    • 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
    • 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
    • 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
    • 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

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Force Measurement Appropriate To Specific Purposes (AREA)
  • Mounting Of Bearings Or Others (AREA)
  • Rolling Contact Bearings (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a bearing device for a wheel capable of compactly providing a load sensor in a vehicle so as to accurately detect a load applied to the wheel and possible to be manufactured at low costs in mass production. <P>SOLUTION: This bearing device for a wheel is structured by interposing double row rolling bodies 5 between rolling surfaces 3 and 4 of an outer member 1 and an inner member 2, and supports the wheel freely to rotate in relation to a car body. A spacer 17 is interposed between a peripheral part of a car body fitting hole 1aa of a car body fitting flange 1a of the fixed side member in the outer member 1 and the inner member 2 and a knuckle 12 structuring a suspension device of the car body. The fixed side member is fixed to the knuckle 12 by inserting or screwing a bolt 13 into the car body fitting hole 1aa. The bolt 13 is provided with a distortion sensor 14 for detecting distortion of the bolt 13. Furthermore, a load computing means 15 is provided to estimate the external force applied to the wheel by an output of the distortion sensor 14 or the force working between the tire and a road surface. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

この発明は、車輪にかかる荷重を検出する荷重センサを内蔵した車輪用軸受装置に関する。   The present invention relates to a wheel bearing device having a built-in load sensor for detecting a load applied to a wheel.

従来、自動車の安全走行のために、各車輪の回転速度を検出するセンサを車輪用軸受装置に設けたものがある。従来の一般的な自動車の走行安全性確保対策は、各部の車輪の回転速度を検出することで行われているが、車輪の回転速度だけでは十分でなく、その他のセンサ信号を用いてさらに安全面の制御が可能なことが求められている。
そこで、車両走行時に各車輪に作用する荷重から姿勢制御を図ることも考えられる。例えばコーナリングにおいては外側車輪に大きな荷重がかかり、また左右傾斜面走行では片側車輪に、ブレーキングにおいては前輪にそれぞれ荷重が偏るなど、各車輪にかかる荷重は均等ではない。また、積載荷重不均等の場合にも各車輪にかかる荷重は不均等になる。このため、車輪にかかる荷重を随時検出できれば、その検出結果に基づき、事前にサスペンション等を制御することで、車両走行時の姿勢制御（コーナリング時のローリング防止、ブレーキング時の前輪沈み込み防止、積載荷重不均等による沈み込み防止等）を行うことが可能となる。しかし、車輪に作用する荷重を検出するセンサの適切な設置場所がなく、荷重検出による姿勢制御の実現が難しい。
また、今後ステアバイワイヤが導入されて、車軸とステアリングが機械的に結合しないシステムになってくると、車軸方向荷重を検出して運転手が握るハンドルに路面情報を伝達することが求められる。
このような要請に応えるものとして、車輪用軸受の外輪に歪みゲージを貼り付け、歪みを検出するようにした車輪用軸受装置が提案されている（例えば特許文献１）。
特表２００３−５３０５６５号公報 2. Description of the Related Art Conventionally, there has been a wheel bearing device provided with a sensor for detecting the rotational speed of each wheel for safe driving of an automobile. Conventional measures to ensure driving safety of general automobiles are performed by detecting the rotational speed of the wheels of each part, but the rotational speed of the wheels is not sufficient, and it is further safer by using other sensor signals. It is required that the surface can be controlled.
Therefore, it is conceivable to control the posture from the load acting on each wheel during vehicle travel. For example, a large load is applied to the outer wheel in cornering, and the load applied to each wheel is not uniform. In addition, even when the load is uneven, the load applied to each wheel is uneven. For this reason, if the load applied to the wheel can be detected at any time, based on the detection result, the suspension and the like are controlled in advance, thereby controlling the posture during vehicle travel (preventing rolling during cornering, preventing the front wheel from sinking during braking, It is possible to prevent subsidence due to uneven load capacity. However, there is no appropriate installation location of a sensor that detects a load acting on the wheel, and it is difficult to realize posture control by load detection.
In addition, when steer-by-wire is introduced in the future, and the system is such that the axle and the steering are not mechanically coupled, it is required to detect the axle direction load and transmit the road surface information to the handle held by the driver.
As a response to such a request, a wheel bearing device has been proposed in which a strain gauge is attached to an outer ring of a wheel bearing to detect the strain (for example, Patent Document 1).
Special table 2003-530565 gazette

車輪用軸受装置の外輪は、転走面を有し強度が求められる部品であって、塑性加工や、旋削加工、熱処理、研削加工などの複雑な工程を経て生産される軸受部品であるため、特許文献１のように外輪に歪ゲージを貼り付けるのでは、生産性が悪く、量産時のコストが高くなるという問題点がある。   The outer ring of the wheel bearing device is a part that has a rolling surface and requires strength, and is a bearing part that is produced through complicated processes such as plastic working, turning, heat treatment, and grinding. When a strain gauge is attached to the outer ring as in Patent Document 1, there is a problem that productivity is poor and the cost for mass production is high.

この発明の目的は、車両にコンパクトに荷重センサを設置できて、車輪にかかる荷重を精度良く検出でき、量産時のコストが安価となる車輪用軸受装置を提供することである。   An object of the present invention is to provide a wheel bearing device in which a load sensor can be compactly installed in a vehicle, a load applied to a wheel can be detected with high accuracy, and a cost during mass production is reduced.

この発明の第１の発明にかかる車輪用軸受装置は、複列の転走面が内周に形成された外方部材と、この外方部材の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装置において、前記外方部材および内方部材のうちの固定側部材が有する車体取付用フランジの車体取付孔の周辺と、車体の懸架装置を構成するナックルとの間にスペーサを介在させ、前記車体取付孔に挿通されまたはねじ込まれて前記固定側部材をナックルに固定するボルトに、このボルトの歪みを検出する歪みセンサを設け、この歪みセンサの出力によって車輪に作用する外力またはタイヤと路面間の作用力を推定する荷重計算手段を設けたことを特徴とする。前記固定側部材は例えば外方部材である。
車両走行に伴いこの車輪用軸受装置に荷重が加わると、前記外方部材および内方部材のうちの固定側部材と前記ナックルとの間に力が生じる。この力は前記固定側部材とナックルを結合するボルトに歪みをもたらし、その歪みをボルトに設けられた歪みセンサが検出する。荷重の方向や大きさによって歪みの変化が異なることから、前記荷重計算手段には、予め実験やシュミレーションにより求めた歪みと荷重の関係のデータを用意しておく。これにより、歪みセンサの出力を受けて、荷重計算手段は、車輪に作用する外力、またはタイヤと路面間の作用力を算出することができる。このように算出された外力，作用力を自動車の車両制御に使用することができる。
とくに、前記固定側部材の車体取付用フランジとナックルの間にスペーサを介在させ、スペーサの介在箇所でボルトにより車体取付用フランジをナックルに固定していることから、車体取付用フランジとナックルとの間に生じる力がボルトに集中することになり、加わる荷重に応答して生じるボルトの歪みがそれだけ大きくなり、歪みセンサの検出精度が向上する。
また、外方部材および内方部材のうちの固定側部材をナックルに固定するボルトに歪みセンサを設けているので、荷重センサである歪みセンサを車両にコンパクトに設置でき、量産性に優れ、量産時のコストが安価となる。 In the wheel bearing device according to the first aspect of the present invention, an outer member having a double-row rolling surface formed on the inner periphery, and a rolling surface facing the rolling surface of the outer member on the outer periphery. In a wheel bearing device comprising a formed inward member and a double row rolling element interposed between both rolling surfaces and rotatably supporting the wheel with respect to the vehicle body, the outer member and the inward member A spacer is interposed between the periphery of the vehicle body mounting hole of the vehicle body mounting flange of the fixed side member and the knuckle that constitutes the suspension device of the vehicle body, and is inserted into or screwed into the vehicle body mounting hole and fixed. The bolt that fixes the side member to the knuckle is provided with a strain sensor that detects strain of the bolt, and load calculation means for estimating the external force acting on the wheel or the acting force between the tire and the road surface by the output of the strain sensor is provided. It is characterized by that. The fixed side member is an outward member, for example.
When a load is applied to the wheel bearing device as the vehicle travels, a force is generated between the fixed member of the outer member and the inner member and the knuckle. This force causes distortion in the bolt that joins the fixed side member and the knuckle, and the distortion is detected by a strain sensor provided on the bolt. Since the change in strain differs depending on the direction and magnitude of the load, the load calculation means prepares data on the relationship between strain and load obtained in advance through experiments and simulations. Thereby, the load calculation means can calculate the external force acting on the wheels or the acting force between the tire and the road surface in response to the output of the strain sensor. The external force and acting force calculated in this way can be used for vehicle control of the automobile.
In particular, a spacer is interposed between the vehicle body mounting flange and the knuckle of the fixed side member, and the vehicle body mounting flange is fixed to the knuckle by bolts at the spacer interposed portion. The force generated in the middle is concentrated on the bolt, and the distortion of the bolt generated in response to the applied load increases accordingly, and the detection accuracy of the strain sensor is improved.
In addition, since the strain sensor is provided on the bolt that fixes the fixed side member of the outer member and the inner member to the knuckle, the strain sensor, which is a load sensor, can be installed compactly in the vehicle, and is excellent in mass productivity. The cost of time is low.

この発明において、前記スペーサを、前記固定側部材の車体取付用フランジのナックル対向側面における前記車輪取付孔の周囲に設けられた嵌合凹部と、この嵌合凹部に対向して前記ナックルに設けられた嵌合凹部とに渡って嵌合させることで、ナックルに対する車輪用軸受装置の位置決めを行うものとしても良い。
この構成の場合、ナックルに対する車輪用軸受装置の位置決めを容易に行うことができる。また、前記スペーサが、上記の作用力をボルトに集中させるための手段と位置決めの手段を兼用することになり、簡単な構成でボルトへの作用力の集中と位置決めとの両作用を得ることができる。 In the present invention, the spacer is provided on the knuckle facing the fitting recess, the fitting recess provided around the wheel mounting hole on the side facing the knuckle of the body mounting flange of the stationary member. It is good also as what positions the wheel bearing apparatus with respect to a knuckle by making it fit over the other fitting recessed part.
In this configuration, the wheel bearing device can be easily positioned with respect to the knuckle. Further, the spacer serves as both a means for concentrating the acting force on the bolt and a positioning means, so that both the concentration of the acting force on the bolt and the positioning can be obtained with a simple configuration. it can.

この発明の第２の発明にかかる車輪用軸受装置は、前記第１の発明にかかる車輪用軸受装置において、前記スペーサに代えて、前記固定側部材の車体取付用フランジのナックル対向側面における前記車体取付孔の周囲に凸部を設け、前記車体取付用フランジは前記凸部でナックルに当接するものとしている。
この構成の場合にも、第１の発明にかかる車輪用軸受装置の場合と同様に、車両にコンパクトに荷重センサを設置でき、車輪にかかる荷重を精度良く検出でき、量産時のコストが安価となる。スペーサを介さないため、部品点数を低減でき、それだけナックルへの車輪用軸受装置の固定作業を簡略化できる。 The wheel bearing device according to a second aspect of the present invention is the wheel bearing device according to the first aspect of the invention, wherein the vehicle body on the side facing the knuckle of the flange for mounting the vehicle body of the stationary member instead of the spacer. A convex portion is provided around the mounting hole, and the vehicle body mounting flange is in contact with the knuckle at the convex portion.
Also in this configuration, as in the case of the wheel bearing device according to the first invention, a load sensor can be installed compactly in the vehicle, the load on the wheel can be accurately detected, and the cost for mass production is low. Become. Since no spacer is used, the number of parts can be reduced, and the fixing work of the wheel bearing device to the knuckle can be simplified accordingly.

この発明の第３の発明にかかる車輪用軸受装置は、前記第１の発明にかかる車輪用軸受装置において、前記スペーサに代えて、前記ナックルの前記固定側部材の車体取付用フランジと対向する側面における、前記ボルトを挿通させる孔の周囲に凸部を設け、前記ナックルはこの凸部で前記車体取付用フランジに当接するものとしている。
この構成の場合にも、第１の発明にかかる車輪用軸受装置の場合と同様に、車両にコンパクトに荷重センサを設置でき、車輪にかかる荷重を精度良く検出でき、量産時のコストが安価となる。スペーサを介さないため、部品点数を低減でき、それだけナックルへの車輪用軸受装置の固定作業を簡略化できる。 A wheel bearing device according to a third aspect of the present invention is the wheel bearing device according to the first aspect, wherein the side surface of the knuckle facing the vehicle body mounting flange instead of the spacer. , A projection is provided around the hole through which the bolt is inserted, and the knuckle is in contact with the body mounting flange at the projection.
Also in this configuration, as in the case of the wheel bearing device according to the first invention, a load sensor can be installed compactly in the vehicle, the load on the wheel can be accurately detected, and the cost for mass production is low. Become. Since no spacer is used, the number of parts can be reduced, and the fixing work of the wheel bearing device to the knuckle can be simplified accordingly.

これらの発明において、前記歪みセンサが、前記ボルトの軸方向歪みを検出するものであっても、前記ボルトの周方向歪みを検出するものであっても良く、また前記ボルトの曲げ歪みを検出するものであっても、前記ボルトのせん断歪みを検出するものであっても、前記ボルトに作用する軸力を検出するものであっても良い。   In these inventions, the strain sensor may detect axial strain of the bolt, or may detect circumferential strain of the bolt, and may detect bending strain of the bolt. Even if it is a thing, it may detect the shear distortion of the said volt | bolt, and may detect the axial force which acts on the said volt | bolt.

この発明の第１の発明にかかる車輪用軸受装置は、複列の転走面が内周に形成された外方部材と、この外方部材の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装置において、前記外方部材および内方部材のうちの固定側部材が有する車体取付用フランジの車体取付孔の周辺と、車体の懸架装置を構成するナックルとの間にスペーサを介在させ、前記車体取付孔に挿通されまたはねじ込まれて前記固定側部材をナックルに固定するボルトに、このボルトの歪みを検出する歪みセンサを設け、この歪みセンサの出力によって車輪に作用する外力またはタイヤと路面間の作用力を推定する荷重計算手段を設けたため、車両にコンパクトに荷重センサを設置でき、車輪にかかる荷重を精度良く検出でき、量産時のコストが安価となる。
この発明の第２の発明にかかる車輪用軸受装置は、第１の発明にかかる車輪用軸受装置において、前記スペーサに代えて、前記固定側部材の車体取付用のフランジのナックル対向側面における前記車体取付孔の周囲に凸部を設け、前記車体取付用フランジは前記凸部でナックルに当接するものとしたため、車両にコンパクトに荷重センサを設置でき、車輪にかかる荷重を精度良く検出でき、量産時のコストが安価となる。
この発明の第３の発明にかかる車輪用軸受装置は、第１の発明にかかる車輪用軸受装置において、前記スペーサに代えて、前記ナックルの前記固定側部材の車体取付用フランジと対向する側面における、前記ボルトを挿通する孔の周囲に凸部を設け、前記ナックルはこの凸部で前記車体取付用フランジの前記側面に当接するものとしたため、車両にコンパクトに荷重センサを設置でき、車輪にかかる荷重を精度良く検出でき、量産時のコストが安価となる。 In the wheel bearing device according to the first aspect of the present invention, an outer member having a double-row rolling surface formed on the inner periphery, and a rolling surface facing the rolling surface of the outer member on the outer periphery. In a wheel bearing device comprising a formed inward member and a double row rolling element interposed between both rolling surfaces and rotatably supporting the wheel with respect to the vehicle body, the outer member and the inward member A spacer is interposed between the periphery of the vehicle body mounting hole of the vehicle body mounting flange of the fixed side member and the knuckle that constitutes the suspension device of the vehicle body, and is inserted into or screwed into the vehicle body mounting hole and fixed. The bolt that fixes the side member to the knuckle is provided with a strain sensor that detects the strain of the bolt, and load calculation means that estimates the external force acting on the wheel or the acting force between the tire and the road surface by the output of the strain sensor. , Compact to vehicle Can be installed heavy sensor, a load applied to the wheel can accurately detect the cost in mass production becomes expensive.
The wheel bearing device according to a second aspect of the present invention is the wheel bearing device according to the first aspect, wherein the vehicle body on the side facing the knuckle of the flange for mounting the vehicle body of the fixed side member instead of the spacer. Protrusions are provided around the mounting holes, and the body mounting flange contacts the knuckle at the protrusions, so a load sensor can be installed compactly on the vehicle, and the load on the wheels can be detected with high accuracy. The cost of is low.
A wheel bearing device according to a third aspect of the present invention is the wheel bearing device according to the first aspect of the invention, wherein the wheel bearing device is arranged on a side surface of the knuckle facing the vehicle body mounting flange instead of the spacer. Since a convex portion is provided around the hole through which the bolt is inserted, and the knuckle abuts against the side surface of the vehicle body mounting flange at the convex portion, a load sensor can be installed compactly on the vehicle and applied to the wheel. The load can be detected accurately, and the cost for mass production is low.

この発明の第１の実施形態を図１ないし図３と共に説明する。この車輪用軸受装置は、複列外向きアンギュラ玉軸受型の自動車用ホイール軸受となるものであり、かつ従動輪支持用の例である。なお、この明細書において、車両に取付けた状態で車両の車幅方向外側寄りとなる側をアウトボード側と言い、車両の中央寄りとなる側をインボード側と呼ぶ。 この車輪用軸受装置は、図１に示すように、複列の転走面３が内周に形成された外方部材１と、この外方部材１の各転走面３と対向する転走面４が外周に形成された内方部材２と、これら転走面３，４間に介在した複列の転動体５とを備え、車体に対して車輪を回転自在に支持するようにしたものである。転動体５はボールからなり、各列毎に保持器６で保持されている。外方部材１と内方部材２の間の軸受空間の両端は、シール７，８によりそれぞれ密封されている。   A first embodiment of the present invention will be described with reference to FIGS. This wheel bearing device is a double-row outward angular ball bearing type automotive wheel bearing, and is an example for supporting a driven wheel. In this specification, the side closer to the outer side in the vehicle width direction of the vehicle when attached to the vehicle is referred to as the outboard side, and the side closer to the center of the vehicle is referred to as the inboard side. As shown in FIG. 1, the wheel bearing device includes an outer member 1 in which double-row rolling surfaces 3 are formed on the inner periphery, and rolling facing each rolling surface 3 of the outer member 1. An inner member 2 having a surface 4 formed on the outer periphery, and a double-row rolling element 5 interposed between the rolling surfaces 3 and 4 so as to rotatably support the wheel with respect to the vehicle body. It is. The rolling elements 5 are formed of balls and are held by the cage 6 for each row. Both ends of the bearing space between the outer member 1 and the inner member 2 are sealed with seals 7 and 8, respectively.

内方部材２は回転側部材となるものであって、アウトボード側の端部付近の外周に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。ハブフランジ９ａには、ブレーキロータを介して車輪（いずれも図示せず）がハブボルト１１で取付けられる。ハブ輪９のインボード側の端部は、内輪１０の幅面を押し付けるフランジ状の加締部９ｂとされており、この加締部９ｂにより内輪１０が軸方向に締め付け固定される。   The inner member 2 is a rotating side member, and has a hub wheel 9 having a hub flange 9a for wheel mounting on the outer periphery near the end portion on the outboard side, and an outer periphery of the inboard side end of the hub wheel 9 And an inner ring 10 fitted to the inner ring 10. The rolling surfaces 4 of the respective rows are formed on the hub wheel 9 and the inner ring 10. Wheels (both not shown) are attached to the hub flange 9a with hub bolts 11 via a brake rotor. The end portion on the inboard side of the hub wheel 9 is a flange-shaped caulking portion 9b that presses the width surface of the inner ring 10, and the inner ring 10 is clamped and fixed in the axial direction by the caulking portion 9b.

外方部材１は固定側部材となるものであって、車体の懸架装置を構成するナックル１２に取付ける車体取付用フランジ１ａを外周に有し、全体が一体の部品とされている。車体取付用フランジ１ａのねじ孔である車体取付孔１ａａの周辺とナックル１２との間には、ボルト挿通孔１７ａを有するスペーサ１７を介在させ、ナックル１２およびスペーサ１７のボルト挿通孔１２ａ，１７ａを貫通し前記車体取付用フランジ１ａの車体取付孔１ａａにねじ込まれるナックルボルト１３により、外方部材１の車体取付用フランジ１ａがナックル１２に固定される。
なお、前記車体取付用フランジ１ａの車体取付孔１ａａを単純なボルト挿通孔として、この車体取付孔１ａａを貫通したナックルボルト１２にナットを螺合させることで、車体取付用フランジ１ａをナックル１２に締め付け固定しても良い。 The outer member 1 is a fixed side member, and has a vehicle body mounting flange 1a attached to the knuckle 12 constituting the suspension device of the vehicle body on the outer periphery, and the whole is an integral part. A spacer 17 having a bolt insertion hole 17a is interposed between the periphery of the vehicle body attachment hole 1aa, which is a screw hole of the vehicle body attachment flange 1a, and the knuckle 12, and the bolt insertion holes 12a and 17a of the knuckle 12 and the spacer 17 are provided. The vehicle body mounting flange 1a of the outer member 1 is fixed to the knuckle 12 by a knuckle bolt 13 that passes through and is screwed into the vehicle body mounting hole 1aa of the vehicle body mounting flange 1a.
The vehicle body mounting flange 1a of the vehicle body mounting flange 1a is used as a simple bolt insertion hole, and a nut is screwed into the knuckle bolt 12 passing through the vehicle body mounting hole 1aa, so that the vehicle body mounting flange 1a is attached to the knuckle 12. It may be fastened and fixed.

図２は、前記ナックルボルト１３の一例の平面図を示す。このナックルボルト１３の軸部１３ｂの一部には平坦部１３ｃが形成されており、その平坦部１３ｃ上にナックルボルト１３の歪みを検出する歪みセンサ１４が設けられている。この歪みセンサ１４は、車体側に設けられた図１に示す荷重計算手段１５に接続される。荷重計算手段１５は、歪みセンサ１４の出力によって、車輪に作用する外力またはタイヤと路面間の作用力を推定する手段である。
歪みセンサ１４は、前記ナックルボルト１３の軸方向歪みを検出するものであっても、前記ナックルボルト１３の周方向歪みを検出するものであっても良く、また前記ナックルボルト１３の曲げ歪みを検出するものであっても、前記ナックルボルト１３のせん断歪みを検出するものであっても、前記ナックルボルト１３に作用する軸力を検出するものであっても良い。 FIG. 2 shows a plan view of an example of the knuckle bolt 13. A flat portion 13c is formed on a part of the shaft portion 13b of the knuckle bolt 13, and a strain sensor 14 for detecting the distortion of the knuckle bolt 13 is provided on the flat portion 13c. This strain sensor 14 is connected to a load calculation means 15 shown in FIG. 1 provided on the vehicle body side. The load calculating means 15 is a means for estimating an external force acting on the wheel or an acting force between the tire and the road surface based on the output of the strain sensor 14.
The strain sensor 14 may detect axial strain of the knuckle bolt 13, or may detect circumferential strain of the knuckle bolt 13, and may detect bending strain of the knuckle bolt 13. It is possible to detect the shearing strain of the knuckle bolt 13 or to detect the axial force acting on the knuckle bolt 13.

前記ナックルボルト１３は、この他に図３に縦断面図で示すように、ボルト頭部１３ａから軸部１３ｂの中間部に渡り軸方向に延びる孔１６を形成し、この孔１６内に歪みセンサ１４を配置しても良い。さらには、ナックルボルト１３における歪みセンサ１４の配置形態として、図２の配置例と図３の配置例の両方を併用しても良い。
なお、ナックルボルト１３における歪みセンサ１４の好適な配置位置は、検出したい荷重の種類によって異なるが、１つのナックルボルト１３に複数のセンサ配置形態を適用すれば、あらゆる種類の荷重を１つのナックルボルト１３で検出することも可能となる。
また、前記ナックルボルト１３は、外方部材１の車体取付用フランジ１ａをナックル１２に固定するために、これら両部材の周方向の複数箇所に設けられるので、それぞれのナックルボルト１３に歪みセンサ１４を配置することとすれば、より精度の高い荷重検出が可能となる。 In addition to this, the knuckle bolt 13 is formed with a hole 16 extending in the axial direction from the bolt head portion 13a to the intermediate portion of the shaft portion 13b as shown in a longitudinal sectional view in FIG. 14 may be arranged. Furthermore, as an arrangement form of the strain sensor 14 on the knuckle bolt 13, both the arrangement example of FIG. 2 and the arrangement example of FIG.
The preferred arrangement position of the strain sensor 14 on the knuckle bolt 13 varies depending on the type of load to be detected. However, if a plurality of sensor arrangement forms are applied to one knuckle bolt 13, all kinds of loads can be applied to one knuckle bolt. 13 can also be detected.
In addition, the knuckle bolts 13 are provided at a plurality of locations in the circumferential direction of these two members in order to fix the vehicle body mounting flange 1a of the outer member 1 to the knuckle 12. If it is arranged, load detection with higher accuracy becomes possible.

この構成の車輪用軸受装置によれば、車両走行に伴い荷重が加わると、外方部材１の車体取付用フランジ１ａとナックル１２との間に力が生じる。この力は車体取付用フランジ１ａおよびナックル１２の両部材をスペーサ１７を介して結合するナックルボルト１３に歪みをもたらし、その歪みをナックルボルト１３に設けられた歪みセンサ１４が検出する。荷重の方向や大きさによって歪みの変化が異なるため、前記荷重計算手段１５には、予め実験やシュミレーションにより求めた歪みと荷重の関係のデータが用意されている。これにより、荷重計算手段１５は、歪みセンサ１４の出力を受けて、車輪に作用する外力、またはタイヤと路面間の作用力を算出することができる。
とくに、車体取付用フランジ１ａとナックル１２の間にスペーサ１７を介在させ、スペーサ１７の介在箇所でナックルボルト１３により車体取付用フランジ１ａをナックル１２に固定していることから、車体取付用フランジ１ａとナックル１２との間に生じる力がナックルボルト１３に集中することになり、加わる荷重に応答して生じるナックルボルト１３の歪みがそれだけ大きくなり、歪みセンサ１４の検出精度が向上する。
また、外方部材１の車体取付用フランジ１ａをスペーサ１７を介してナックル１２に固定するナックルボルト１３に歪みセンサ１４を設けているので、荷重センサである歪みセンサ１４を車両にコンパクトに設置でき、量産性に優れ、量産時のコストが安価となる。 また、荷重計算手段１５は、算出する車輪に作用する外力、またはタイヤと路面間の作用力が所定の許容値を超えたと判断される場合に外部に異常信号を出力するものとすれば、自動車の車両制御に使用することができる。さらに、上記車輪に作用する外力、またはタイヤと路面間の作用力を、リアルタイムで荷重計算手段１５から出力することにより、よりきめ細やかな車両制御が可能となる。 According to the wheel bearing device of this configuration, when a load is applied as the vehicle travels, a force is generated between the vehicle body mounting flange 1 a of the outer member 1 and the knuckle 12. This force causes distortion in the knuckle bolt 13 that couples both the body mounting flange 1 a and the knuckle 12 via the spacer 17, and the distortion sensor 14 provided on the knuckle bolt 13 detects the distortion. Since the change in strain differs depending on the direction and magnitude of the load, the load calculation means 15 is prepared with data on the relationship between the strain and the load obtained in advance through experiments and simulations. Thereby, the load calculation means 15 can receive the output of the distortion sensor 14, and can calculate the external force which acts on a wheel, or the action force between a tire and a road surface.
In particular, the spacer 17 is interposed between the vehicle body mounting flange 1a and the knuckle 12, and the vehicle body mounting flange 1a is fixed to the knuckle 12 by the knuckle bolt 13 at the position where the spacer 17 is interposed. And the knuckle 12 is concentrated on the knuckle bolt 13, and the distortion of the knuckle bolt 13 generated in response to the applied load is increased accordingly, and the detection accuracy of the strain sensor 14 is improved.
In addition, since the strain sensor 14 is provided on the knuckle bolt 13 that fixes the vehicle body mounting flange 1a of the outer member 1 to the knuckle 12 via the spacer 17, the strain sensor 14 that is a load sensor can be compactly installed in the vehicle. It is excellent in mass production and the cost for mass production is low. If the load calculating means 15 outputs an abnormal signal to the outside when it is determined that the external force acting on the calculated wheel or the acting force between the tire and the road surface exceeds a predetermined allowable value, It can be used for vehicle control. Furthermore, by outputting the external force acting on the wheel or the acting force between the tire and the road surface from the load calculation means 15 in real time, more finely controlled vehicle can be achieved.

図４および図５はこの発明の他の実施形態を示し、図５は図４におけるＶ−Ｖ矢視断面図を示す。この実施形態の車輪用軸受装置では、図１〜図３に示す第１の実施形態の車輪用軸受装置において、外方部材１の車体取付用フランジ１ａのナックル対向面における車鯛取付孔１ａａの周囲に嵌合凹部１ａｂが設けられると共に、この嵌合凹部１ａｂに対向してナックル１２にも嵌合凹部１２ｂが設けられ、これら両嵌合凹部１ａｂ，１２ｂに渡ってスペーサ１７が嵌合させてある。この場合のスペーサ１７は、前記両嵌合凹部１ａｂ，１２ｂに嵌合した状態で、車体取付用フランジ１ａとナックル１２とが接触しない厚みとされる。その他の構成は第１の実施形態の場合と同様である。
このように、車体取付用フランジ１ａの嵌合凹部１ａｂおよびナックル１２の嵌合凹部１２ｂにスペーサ１７を嵌合することで、ナックル１２に対する車輪用軸受装置の位置決めを容易に行うことができる。 4 and 5 show another embodiment of the present invention, and FIG. 5 shows a cross-sectional view taken along line VV in FIG. In the wheel bearing device of this embodiment, in the wheel bearing device of the first embodiment shown in FIGS. 1 to 3, the vehicle mounting hole 1 aa on the knuckle facing surface of the vehicle body mounting flange 1 a of the outer member 1. A fitting recess 1ab is provided in the periphery, and a fitting recess 12b is also provided in the knuckle 12 so as to face the fitting recess 1ab, and the spacer 17 is fitted over both the fitting recesses 1ab and 12b. is there. In this case, the spacer 17 has a thickness such that the vehicle body mounting flange 1a and the knuckle 12 do not contact with each other in a state where the spacer 17 is fitted in the fitting recesses 1ab and 12b. Other configurations are the same as those in the first embodiment.
Thus, by positioning the spacer 17 in the fitting recess 1ab of the vehicle body mounting flange 1a and the fitting recess 12b of the knuckle 12, positioning of the wheel bearing device with respect to the knuckle 12 can be performed easily.

図６および図７はこの発明のさらに他の実施形態を示し、図７は図６におけるVII-VII 矢視断面図を示す。この実施形態の車輪用軸受装置では、図１〜図３に示す第１の実施形態の車輪用軸受装置におけるスペーサ１７に代えて、前記外方部材１の車体取付用フランジ１ａのナックル対向側面における前記車体取付孔１ａａの周囲に凸部１ｂを設け、車体取付用フランジ１ａは前記凸部１ｂでナックル１２に当接するものとしている。その他の構成は第１の実施形態の場合と同様である。
このように、第１の実施形態におけるスペーサ１７に代えて、車体取付用フランジ１ａのナックル対向側面に凸部１ｂを設けることで部品点数を低減でき、それだけナックル１２への車輪用軸受装置の固定作業を簡略化できる。 6 and 7 show still another embodiment of the present invention, and FIG. 7 is a sectional view taken along arrow VII-VII in FIG. In the wheel bearing device of this embodiment, instead of the spacer 17 in the wheel bearing device of the first embodiment shown in FIGS. 1 to 3, on the side surface facing the knuckle of the vehicle body mounting flange 1 a of the outer member 1. A convex portion 1b is provided around the vehicle body mounting hole 1aa, and the vehicle body mounting flange 1a is in contact with the knuckle 12 at the convex portion 1b. Other configurations are the same as those in the first embodiment.
Thus, instead of the spacer 17 in the first embodiment, the number of parts can be reduced by providing the convex portion 1b on the side surface facing the knuckle of the body mounting flange 1a, and the fixing of the wheel bearing device to the knuckle 12 accordingly. Work can be simplified.

図８および図９はこの発明のさらに他の実施形態を示し、図９は図８におけるIX−IX矢視断面図を示す。この実施形態の車輪用軸受装置では、図１〜図３に示す第１の実施形態の車輪用軸受装置におけるスペーサ１７に代えて、前記ナックル１２の車体取付用フランジ１ａと対向する側面におけるボルト挿通孔１２ａの周囲に凸部１２ｃを設け、ナックル１２は前記凸部１２ｃで車体取付用フランジ１ａに当接するものとしている。その他の構成は第１の実施形態の場合と同様である。
このように、第１の実施形態におけるスペーサ１７に代えて、ナックル１２の車体取付用フランジ１ａと対向する側面に凸部１２ｃを設けることで部品点数を低減でき、それだけナックル１２への車輪用軸受装置の固定作業を簡略化できる。 8 and 9 show still another embodiment of the present invention, and FIG. 9 shows a cross-sectional view taken along the line IX-IX in FIG. In the wheel bearing device of this embodiment, instead of the spacer 17 in the wheel bearing device of the first embodiment shown in FIGS. 1 to 3, bolt insertion on the side surface of the knuckle 12 facing the vehicle body mounting flange 1a. Protrusions 12c are provided around the holes 12a, and the knuckle 12 is in contact with the vehicle body mounting flange 1a at the protrusions 12c. Other configurations are the same as those in the first embodiment.
Thus, instead of the spacer 17 in the first embodiment, the number of parts can be reduced by providing the convex portion 12 c on the side surface of the knuckle 12 facing the vehicle body mounting flange 1 a, and the wheel bearing to the knuckle 12 can be reduced accordingly. The fixing work of the apparatus can be simplified.

なお、上記各実施形態では、外方部材１が固定側部材となる内輪回転タイプの車輪用軸受装置に適用した場合を例示したが、内方部材が固定側の部材となる外輪回転タイプの車輪用軸受装置に適用しても、上記と同様の効果を得ることができる。外輪回転タイプの場合、例えば、内方部材に形成されるフランジをナックルに結合するナックルボルトに、歪みセンサを設けるようにしても良い。   In each of the above-described embodiments, the case where the outer member 1 is applied to an inner ring rotating type wheel bearing device in which the outer member 1 is a fixed side member is illustrated. However, the outer ring rotating type wheel in which the inner member is a fixed member. Even if it is applied to a bearing device, the same effect as described above can be obtained. In the case of the outer ring rotation type, for example, a strain sensor may be provided on a knuckle bolt that couples a flange formed on the inner member to the knuckle.

この発明の第１の実施形態にかかる車輪用軸受装置の断面図である。It is sectional drawing of the wheel bearing apparatus concerning 1st Embodiment of this invention. 同車輪用軸受装置におけるナックルボルトの一例の平面図である。It is a top view of an example of the knuckle bolt in the bearing apparatus for wheels. ナックルボルトの他の例の縦断面図である。It is a longitudinal cross-sectional view of the other example of a knuckle bolt. この発明の他の実施形態にかかる車輪用軸受装置の断面図である。It is sectional drawing of the wheel bearing apparatus concerning other embodiment of this invention. 図４におけるＶ−Ｖ矢視断面図である。It is a VV arrow sectional view in FIG. この発明のさらに他の実施形態にかかる車輪用軸受装置の断面図である。It is sectional drawing of the wheel bearing apparatus concerning other embodiment of this invention. 図６におけるVII −VII 矢視断面図である。It is a VII-VII arrow sectional view in Drawing 6. この発明のさらに他の実施形態にかかる車輪用軸受装置の断面図である。It is sectional drawing of the wheel bearing apparatus concerning other embodiment of this invention. 図８における1X−IX矢視断面図である。It is 1X-IX arrow sectional drawing in FIG.

符号の説明Explanation of symbols

１…外方部材
１ａ…車体取付用フランジ
１ａａ…車体取付孔
１ａｂ…嵌合凹部
１ｂ…凸部
２…内方部材
３，４…転走面
５…転動体
１２…ナックル
１２ａ…ボルト挿通孔
１２ｂ…嵌合凹部
１２ｃ…凸部
１３…ナックルボルト
１４…歪みセンサ
１５…荷重計算手段
１７…スペーサ DESCRIPTION OF SYMBOLS 1 ... Outer member 1a ... Car body mounting flange 1aa ... Car body mounting hole 1ab ... Fitting recessed part 1b ... Convex part 2 ... Inward member 3, 4 ... Rolling surface 5 ... Rolling body 12 ... Knuckle 12a ... Bolt insertion hole 12b ... Fitting recess 12c ... Projection 13 ... Knuckle bolt 14 ... Strain sensor 15 ... Load calculation means 17 ... Spacer

Claims (11)

複列の転走面が内周に形成された外方部材と、この外方部材の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装置において、
前記外方部材および内方部材のうちの固定側部材が有する車体取付用フランジの車体取付孔の周辺と、車体の懸架装置を構成するナックルとの間にスペーサを介在させ、前記車体取付孔に挿通されまたはねじ込まれて前記固定側部材をナックルに固定するボルトに、このボルトの歪みを検出する歪みセンサを設け、この歪みセンサの出力によって車輪に作用する外力またはタイヤと路面間の作用力を推定する荷重計算手段を設けたことを特徴とする車輪用軸受装置。 An outer member in which a double row rolling surface is formed on the inner periphery, an inner member in which a rolling surface opposite to the rolling surface of the outer member is formed on the outer periphery, and an intermediate between both rolling surfaces A double-row rolling element, and a wheel bearing device for rotatably supporting the wheel with respect to the vehicle body,
A spacer is interposed between the periphery of the vehicle body mounting hole of the vehicle body mounting flange of the fixed side member of the outer member and the inner member and a knuckle constituting the suspension device of the vehicle body, and the vehicle body mounting hole The bolt that is inserted or screwed to fix the fixed side member to the knuckle is provided with a strain sensor that detects the strain of the bolt, and an external force acting on the wheel or an acting force between the tire and the road surface by the output of the strain sensor. A wheel bearing device comprising load estimating means for estimation. 請求項１において、前記スペーサを、前記固定側部材の車体取付用フランジのナックル対向側面における前記車輪取付孔の周囲に設けられた嵌合凹部と、この嵌合凹部に対向して前記ナックルに設けられた嵌合凹部とに渡って嵌合させた車輪用軸受装置。   2. The spacer according to claim 1, wherein the spacer includes a fitting recess provided around the wheel mounting hole on a side facing the knuckle of the vehicle body mounting flange of the fixed side member, and the knuckle facing the fitting recess. A wheel bearing device fitted over the fitted recess. 請求項２において、前記スペーサは、前記固定側部材の前記嵌合凹部および前記ナックルの前記嵌合凹部に嵌合することで、ナックルに対する車輪用軸受装置の位置決めを行うものとした車輪用軸受装置。   3. The wheel bearing device according to claim 2, wherein the spacer is positioned in the wheel bearing device relative to the knuckle by being fitted into the fitting recess of the fixed side member and the fitting recess of the knuckle. . 複列の転走面が内周に形成された外方部材と、この外方部材の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装置において、
前記外方部材および内方部材のうちの固定側部材が有する車体取付用フランジの、車体の懸架装置を構成するナックルと対向する側面における車体取付孔の周囲に凸部を設け、前記車体取付用フランジは前記凸部でナックルに当接するものとし、前記車体取付孔に挿通されまたはねじ込まれて前記固定側部材をナックルに固定するボルトに、このボルトの歪みを検出する歪みセンサを設け、この歪みセンサの出力によって車輪に作用する外力またはタイヤと路面間の作用力を推定する荷重計算手段を設けたことを特徴とする車輪用軸受装置。 An outer member in which a double row rolling surface is formed on the inner periphery, an inner member in which a rolling surface opposite to the rolling surface of the outer member is formed on the outer periphery, and an intermediate between both rolling surfaces A double-row rolling element, and a wheel bearing device for rotatably supporting the wheel with respect to the vehicle body,
Protruding portions are provided around the vehicle body mounting holes on the side surfaces of the vehicle body mounting flanges of the fixed side member of the outer member and the inner member facing the knuckle constituting the suspension device of the vehicle body. The flange is in contact with the knuckle at the convex portion, and a bolt that is inserted or screwed into the vehicle body mounting hole to fix the fixed side member to the knuckle is provided with a strain sensor that detects strain of the bolt. A wheel bearing device comprising load calculating means for estimating an external force acting on a wheel or an acting force between a tire and a road surface by an output of a sensor. 複列の転走面が内周に形成された外方部材と、この外方部材の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装置において、
車体の懸架装置を構成するナックルの、前記外方部材および内方部材のうちの固定側部材が有する車体取付用フランジと対向する側面におけるボルト挿通孔の周囲に凸部を設け、前記ナックルはこの凸部で前記車体取付用フランジに当接するものとし、前記車体取付孔に挿通されまたはねじ込まれて前記固定側部材をナックルに固定するボルトに、このボルトの歪みを検出する歪みセンサを設け、この歪みセンサの出力によって車輪に作用する外力またはタイヤと路面間の作用力を推定する荷重計算手段を設けたことを特徴とする車輪用軸受装置。 An outer member in which a double row rolling surface is formed on the inner periphery, an inner member in which a rolling surface opposite to the rolling surface of the outer member is formed on the outer periphery, and an intermediate between both rolling surfaces A double-row rolling element, and a wheel bearing device for rotatably supporting the wheel with respect to the vehicle body,
Protruding portions are provided around the bolt insertion holes on the side surfaces of the knuckle constituting the vehicle suspension system that face the vehicle body mounting flange of the fixed member of the outer member and the inner member. A convex sensor that abuts against the flange for mounting the vehicle body, and a bolt that is inserted into or screwed into the vehicle body mounting hole to fix the fixed side member to the knuckle is provided with a strain sensor that detects strain of the bolt. A wheel bearing device comprising load calculation means for estimating an external force acting on a wheel or an acting force between a tire and a road surface by an output of a strain sensor. 請求項１ないし請求項５のいずれか１項において、前記歪みセンサが、前記ボルトの軸方向歪みを検出するものである車輪用軸受装置。   The wheel bearing device according to any one of claims 1 to 5, wherein the strain sensor detects axial strain of the bolt. 請求項１ないし請求項５のいずれか１項において、前記歪みセンサが、前記ボルトの周方向歪みを検出するものである車輪用軸受装置。   The wheel bearing device according to any one of claims 1 to 5, wherein the strain sensor detects a circumferential strain of the bolt. 請求項１ないし請求項５のいずれか１項において、前記歪みセンサが、前記ボルトの曲げ歪みを検出するものである車輪用軸受装置。   The wheel bearing device according to any one of claims 1 to 5, wherein the strain sensor detects a bending strain of the bolt. 請求項１ないし請求項５のいずれか１項において、前記歪みセンサが、前記ボルトのせん断歪みを検出するものである車輪用軸受装置。   The wheel bearing device according to any one of claims 1 to 5, wherein the strain sensor detects a shear strain of the bolt. 請求項１ないし請求項５のいずれか１項において、前記歪みセンサが、前記ボルトに作用する軸力を検出するものである車輪用軸受装置。   The wheel bearing device according to any one of claims 1 to 5, wherein the strain sensor detects an axial force acting on the bolt. 請求項１ないし請求項１０のいずれか１項において、前記固定側部材が前記外方部材である車輪用軸受装置。   The wheel bearing device according to claim 1, wherein the fixed side member is the outer member.
JP2005353787A 2005-12-07 2005-12-07 Bearing device for wheel Pending JP2007153226A (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016056646A1 (en) * 2014-10-10 2016-04-14 Ntn株式会社 Wheel bearing device
WO2016108266A1 (en) * 2014-12-28 2016-07-07 パラマウントベッド株式会社 Bed senor and bed embedded with same
JP2016123848A (en) * 2014-12-28 2016-07-11 パラマウントベッド株式会社 Sensor for bed and bed accommodating sensor
CN107107660A (en) * 2014-12-10 2017-08-29 Ntn株式会社 Wheel bearing equipment and mounting structure used
CN107327474A (en) * 2017-08-22 2017-11-07 重庆水泵厂有限责任公司 It is a kind of to detect the tilting thrust bearing of axial force of rotating machinery

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016056646A1 (en) * 2014-10-10 2016-04-14 Ntn株式会社 Wheel bearing device
JP2016078494A (en) * 2014-10-10 2016-05-16 Ntn株式会社 Wheel bearing device
EP3205513A4 (en) * 2014-10-10 2018-06-13 NTN Corporation Wheel bearing device
US10029513B2 (en) 2014-10-10 2018-07-24 Ntn Corporation Wheel bearing apparatus
CN107107660A (en) * 2014-12-10 2017-08-29 Ntn株式会社 Wheel bearing equipment and mounting structure used
WO2016108266A1 (en) * 2014-12-28 2016-07-07 パラマウントベッド株式会社 Bed senor and bed embedded with same
JP2016123848A (en) * 2014-12-28 2016-07-11 パラマウントベッド株式会社 Sensor for bed and bed accommodating sensor
CN107327474A (en) * 2017-08-22 2017-11-07 重庆水泵厂有限责任公司 It is a kind of to detect the tilting thrust bearing of axial force of rotating machinery
CN107327474B (en) * 2017-08-22 2023-03-14 重庆水泵厂有限责任公司 Tilting pad thrust bearing capable of detecting axial force of rotary machine

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