CN100533149C - Wheel bearing apparatus incorporated with a rotation speed detecting apparatus - Google Patents
Wheel bearing apparatus incorporated with a rotation speed detecting apparatus Download PDFInfo
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- CN100533149C CN100533149C CNB2005800345716A CN200580034571A CN100533149C CN 100533149 C CN100533149 C CN 100533149C CN B2005800345716 A CNB2005800345716 A CN B2005800345716A CN 200580034571 A CN200580034571 A CN 200580034571A CN 100533149 C CN100533149 C CN 100533149C
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Abstract
To provide a bearing device for a wheel with a rotating speed detecting device, capable of being miniaturized, preventing intrusion of foreign matters to a detecting part, and improved in durability and reliability. In this bearing device for the wheel with the rotating speed detecting device, comprising an encoder 19 externally fitted to an inner ring 6, an annular sensor holder 15 mounted on an end part of an outer member 4 in opposition to the encoder 19, and a rotating speed sensor 20 molded integrally with the sensor holder 15, and faced to the encoder 19 through a prescribed axial clearance, the encoder is composed of the annular magnetic encoder, a seal 11 is mounted at an inboard side of the encoder 19 through the sensor holder 15, and the seal 11 is composed of first and second circular seal plates 21, 22 respectively mounted on the sensor holder 15 and the inner ring 6, in opposition to each other.
Description
Technical field
The present invention relates to have the bearing apparatus for wheel of rotary speed detecting device, its wheel with automobile etc. supports to and can rotate freely, and is built-in with the rotary speed detecting device that the rotational speed to this wheel detects.
Background technology
Usually, known have a following bearing apparatus for wheel that has rotary speed detecting device, that is, its wheel rotation with automobile freely is supported in the draft hitch, and for the rotational speed that detects wheel with control anti-lock braking system (ABS), and be built-in with rotary speed detecting device.In the past, for this bearing apparatus for wheel, roll to connect via rolling body (
Connect) internal part and external component between packoff is set, and magnetic pole is along the circumferential direction replaced magnetic coder and the described packoff arranging and form to form as one, and, utilize magnetic coder and rotation speed sensor to constitute rotary speed detecting device, described rotation speed sensor and this magnetic coder follow the pole change of wheel rotation to detect in the face of configuration to magnetic coder.
Usually, at the steering knuckle (knuckle) that bearing apparatus for wheel is installed on the formation draft hitch afterwards, described rotation speed sensor is installed on this steering knuckle.But, regulate the complexity of operation and further realize densification for the air-gap of eliminating this rotation speed sensor and magnetic coder, proposed recently rotation speed sensor also is built in the bearing apparatus for wheel that has rotary speed detecting device in the bearing.
As a this example that has the bearing apparatus for wheel of rotary speed detecting device, known have a sort of structure shown in Figure 15.This has supported being fixed in the not shown draft hitch of bearing apparatus for wheel of rotary speed detecting device, and has as the external component 101 of fixed part and insert in internal part 102 in this external component 101 in via multiple row rolling body (ball) 103,103; External component 101 has car body mounting flange 101b outside week integratedly, is being formed with outboard raceway face 101a, the 101a of multiple row interior week.On the other hand, internal part 102 is formed with and the outboard raceway face 101a of described external component 101, multiple row inboard raceways face 105a, the 106a that 101a faces.A side inboard raceways face 105a becomes one with the peripheral shape of wheel hub wheel 105 among these multiple row inboard raceways faces 105a, the 106a, and the opposing party's inboard raceways face 106a is formed on the periphery of inner ring 106, and described inner ring 106 is pressed into the inboard raceways face 105a of trailing wheel hub wheel 105 on axially extended path end difference 105b cylindraceous.In addition, the rolling body 103,103 of multiple row is contained in respectively between two roller surfaces, and is held in and can freely rolls by retainer 107,107.
As shown in Figure 16 amplifies like that, the seal 109 of car inboard is embedded in week in the end of external component 101, is formed first seal pad 112 of L word shape and is faced with this first seal pad 112 and second seal pad 113 that the cross section forms L word shape constitutes by the cross section.This second seal pad 113 has the outer vertical plate part 113b that is embedded in the cylindrical portion 113a on the inner ring 106 and extends to radial outside from this cylindrical portion 113a, lateral surface integrated vulcanizing at this vertical plate part 113b is bonded with magnetic coder 114, and this magnetic coder 114 is by having sneaked into the magnetic powder and having constituted at the ferro-gum that Zhou Fangxiang alternately is formed with magnetic pole N, S.
On the other hand, first seal pad 112 has: metal-cored 115, its cross section forms L word shape; And seal member 116, it vulcanizes integratedly and is bonded in this on metal-cored 115, and by with described second seal pad 113 in vertical plate part 113b the medial surface sliding contact edge lip envelope 116a (side lip) and constitute with a pair of footpath labiad envelope (radial lip) 116b, 116c of cylindrical portion 113a sliding contact.
Externally the end of parts 101 is equipped with by chimeric tube 117 and the circular sensor stand (sensor holder) 119 that constitutes with these chimeric tube 117 maintaining parts that combine 118.Chimeric tube 117 constitutes to the 117b of inward flange portion that radially inner side extends by the chimeric tube 117a of portion with from this chimeric tube 117a of portion, and the cross section is that L word shape and integral body form circular.
Be embedded with in the inside of maintaining part 118 with described magnetic coder 114 across predetermined air-gap and opposed rotation speed sensor 120, and maintaining part 118 mold formed integratedly by synthetic resin be circular-arc.Rotation speed sensor 120 is made of following part: Hall element, magnetoresistive element (MR element) etc. change the magnetic detecting element of characteristic corresponding to the flow direction of magnetic flux; And be assembled with the IC that the output waveform of this magnetic detecting element is carried out the waveform shaping circuit of shaping.
Here, the 117b of inward flange portion that makes the end face of inner ring 106 and chimeric tube 117 across minim gap 121 spread all over complete cycle near and face, thereby constitute labyrinth.Thus, even comprising bearing arrangement under the state before the internal diameter when the finished product of automobile is made the assembly line carrying, that the bar portion 111 of lateral joint parts 110 is embedded in wheel hub wheel 105, can prevent that also foreign matter such as Magnaglo from invading between the test section of magnetic coder 114 and rotation speed sensor 120 from the outside.Thereby, can realize improving the reliability that the rotational speed of wheel detects.
Patent documentation 1: 2003-No. 254985 communiques of TOHKEMY
But, though this existing bearing apparatus for wheel that has rotary speed detecting device has following characteristics, promptly, comprising bearing arrangement when the finished product of automobile is made the assembly line carrying, the bar portion 111 of lateral joint parts 110 is embedded under the internal diameter state before of wheel hub wheel 105, can prevent that also foreign matters such as Magnaglo from invading between the test section of magnetic coder 114 and rotation speed sensor 120 from the outside, but at this labyrinth or simply contact in seal etc., under rigorous environment, during actual travel, can't avoid foreign matters such as dust or Magnaglo to invade between the test section of magnetic coder 114 and rotation speed sensor 120 from the outside.These foreign matters make magnetic coder 114 wearing and tearing, and the test section of damage rotation speed sensor 120, thereby the reliability that the rotational speed of wheel detects might reduce.
Summary of the invention
The present invention be directed to the problems referred to above and finish, purpose is to provide a kind of densification and prevents foreign matter intrusion test section, thus the bearing apparatus for wheel that has rotary speed detecting device that the permanance of making and reliability improve.
In order to achieve the above object, the bearing apparatus for wheel that has rotary speed detecting device of first aspect present invention has:
External component is formed with multiple row outboard raceway face on the interior week of this external component;
Internal part, this internal part is made of following part: the wheel hub wheel, its at one end portion have the wheel mounting flange that is used to install wheel integratedly, and be formed with vertically the path end difference cylindraceous that extends in periphery; And be pressed at least one inner ring on this path end difference of taking turns hub wheel, be formed with the multiple row inboard raceways face of facing with described multiple row outboard raceway face in the periphery of this internal part;
The multiple row rolling body, they rotate and freely are contained between each roller surface of described internal part and described external component;
Scrambler, its outer being embedded on the described inner ring;
Circular sensor stand, it is installed in the end of described external component in the mode of facing with described scrambler, and is made of following part: circular chimeric ring, it is installed in the end of described external component; And maintaining part, it closes with this chimeric loops, and in this maintaining part, be embedded with described scrambler across the opposed rotation speed sensor of being scheduled to of air-gap, this rotation speed sensor and described sensor stand are integrally molded;
Have in the bearing apparatus for wheel of rotary speed detecting device at this, adopt following structure:
Described scrambler forms circular, and constitute its characteristic relevant and alternately and equally spaced change with circumferencial direction, and, (inboard) side disposes seal via described sensor stand in the car of this scrambler, and the sealing part constitutes by being installed on also mutual first and second seal pads of facing the ring-type of configuration of described sensor stand and inner ring respectively;
The car medial extremity of described external component is than the more close car of the car medial extremity of the described inner ring outside; And
Axial car inboard at described sensor is provided with described seal;
Position at the outside diameter of the inside side in footpath of the outer peripheral face of described external component and inner ring, the terminal that takes out from the output signal of described rotation speed sensor erects to radial outside, and be connected at the electric wiring of circumferentially deriving along the end of described external component
Described maintaining part, described seal and the leading-out portion that links described terminal and described electric wiring are arranged on the inside side in footpath of outer peripheral face of described external component and the outside diameter of inner ring.
Like this, in the rotary-type bearing apparatus for wheel that has rotary speed detecting device of inner ring, scrambler forms circular, and the characteristic that constitutes itself and circumferencial direction alternately and equally spaced changes, and, car inboard at this scrambler sets seal, the sealing part constitutes by being installed on also mutual first and second seal pads of facing the ring-type of configuration of sensor stand and inner ring respectively, scrambler is arranged on this second seal pad integratedly, therefore, even comprising bearing arrangement when the finished product assembly line of automobile is carried, the lateral joint parts are embedded under the wheel hub wheel state before, and under rigorous environment, during actual travel, can prevent reliably that also foreign matters such as Magnaglo from invading between the test section of scrambler and rotation speed sensor from the outside.Thereby, can improve the reliability of the rotational speed detection of wheel significantly.
In addition, if as a second aspect of the present invention, described scrambler is had the magnetic coder of magnetic pole N, S to constitute at Zhou Fangxiang by magnetization alternately by having sneaked into the magnetic powder, then can carry out high-accuracy speed with low cost and detect.
In addition, if as third aspect present invention, described sensor stand constitutes by the chimeric ring of steel plate system and with the integrally molded maintaining part of this chimeric ring, and described chimeric ring is made of following part: be pressed into the fitting portion cylindraceous on the periphery of external component; The flange part that extends and closely contact with the end face of described external component to radially inner side from this fitting portion; And, in this cylindrical portion, be embedded with described first seal pad from the cylindrical portion that this flange part extends vertically, then can realize densification radially and simplify the associated components of rotation speed sensor etc., thereby further improve assembling work.
In addition, if as fourth aspect present invention, described chimeric ring then can prevent to bring harmful effect to the detection performance of rotation speed sensor, and can further improve the permanance of seal by nonmagnetic material and steel plate punch process with corrosion resistance are formed.
In addition, in fifth aspect present invention, periphery at described inner ring is formed with the path end difference, described seal is installed in the annulus that is formed between this path end difference and the described sensor stand, therefore, the depth of section of seal can be fully guaranteed, sealing can be improved significantly.
In addition, also can be as sixth aspect present invention, second seal pad has the outer vertical plate part that is embedded in the cylindrical portion on the described inner ring and extends to radial outside from this cylindrical portion, and sulfuration is bonded with seal member integratedly on described first seal pad, lip envelope (rip) and the described cylindrical portion and the vertical plate part sliding contact of sealing parts.
In addition, also can be as seventh aspect present invention, described second seal pad has: be embedded in the cylindrical portion on the described inner ring outward; Further form the big footpath cylindrical portion in big footpath from this cylindrical portion; And from the vertical plate part of this big footpath cylindrical portion to the radial outside extension, and sulfuration integratedly is bonded with seal member on described first seal pad in place, lip envelope and the described big footpath cylindrical portion and the vertical plate part sliding contact of sealing parts.
In addition, if as eighth aspect present invention, the elastomeric element of elasticity installing ring shape in the annulus between the external diameter of described big footpath cylindrical portion and described inner ring, then can improve the sealing of the fitting portion of chimeric cylindrical portion and inner ring significantly, can prevent stably in a long term that rainwater etc. from invading bearing inside from the outside.
In addition, if as ninth aspect present invention, described cylindrical portion is configured to from the large end face of described inner ring outstanding, then the width dimensions of inner ring can be suppressed in the necessary Min., wheel bearing light weight/densification more be can make, thereby the fuel consumption and the performance of vehicle improved.
In addition, in tenth aspect present invention, described scrambler and rotation speed sensor are configured to have predetermined pitch angle, therefore, by the inclination of scrambler, for example under the situation that is magnetic coder, can increase the volume of its magnetized portion and increase magnetic flux density substantially, and can set the air-gap of magnetic coder and rotation speed sensor bigger, thereby can improve design freedom and simplify assembling work.
In addition, if on the one hand as the present invention the tenth, the car inboard of more leaning at described seal is equipped with the roughly guard shield of コ word shape of cross section, make the shoulder of this guard shield and lateral joint parts face and the formation labyrinth sealing when then further improving actual travel across small radial play.
In addition, also can be as the present invention the 12 aspect, described guard shield is made of following part: be embedded in first cylindrical portion in the described sensor stand; From the vertical plate part of this first cylindrical portion to the radially inner side extension; And, described vertical plate part and described second seal pad are faced and the formation labyrinth across small end play from second cylindrical portion that this vertical plate part extends vertically.
In addition, also can be as the present invention the 13 aspect, described guard shield is made of following part: be embedded in first cylindrical portion in the described sensor stand; From the vertical plate part of this first cylindrical portion to the radially inner side extension; And, the end face of described second cylindrical portion and described inner ring is faced and the formation labyrinth across small end play from second cylindrical portion that this vertical plate part extends vertically.
In addition, the bearing apparatus for wheel that has rotary speed detecting device of the present invention the 14 aspect has:
External component is formed with multiple row outboard raceway face on the interior week of this external component;
Internal part, this internal part is made of following part: the wheel hub wheel, its at one end portion have the wheel mounting flange that is used to install wheel integratedly, and be formed with vertically the path end difference cylindraceous that extends in periphery; And be pressed at least one inner ring on this path end difference of taking turns hub wheel, be formed with the multiple row inboard raceways face of facing with described multiple row outboard raceway face in the periphery of this internal part;
The multiple row rolling body, they rotate and freely are contained between each roller surface of described internal part and described external component;
Scrambler, its outer being embedded on the described inner ring; And
Sensor stand, it is made of following part: circular chimeric ring, it is installed in the end of described external component; And maintaining part, it closes with this chimeric loops, and in this maintaining part, be embedded with described scrambler across the opposed rotation speed sensor of being scheduled to of air-gap;
Have in the bearing apparatus for wheel of rotary speed detecting device at this, adopt following structure:
Described scrambler forms circular, and constitute its characteristic relevant and alternately and equally spaced change with circumferencial direction, and, the external diameter that described sensor stand is configured in than the steering knuckle chimeric surface of described external component more leans on internal side diameter, the terminal that takes out from the output signal of described rotation speed sensor erects to radial outside, and is connected with the electric wiring of deriving at Zhou Fangxiang along the end of described external component, and the car medial extremity of described external component is than outside the more close car of the car medial extremity of described inner ring.
Like this, the bearing apparatus for wheel that has rotary speed detecting device of the present invention is that inner ring is rotary-type, and this bearing arrangement has:
Magnetic coder, its outer being embedded on the inner ring; And
Sensor stand, it is made of following part: circular chimeric ring, it is installed in the end of external component; And maintaining part, it closes with this chimeric loops, and in this maintaining part, be embedded with magnetic coder across the opposed rotation speed sensor of being scheduled to of air-gap,
Have in the bearing apparatus for wheel of rotary speed detecting device at this,
Described scrambler forms circular, and constitute its characteristic relevant and alternately and equally spaced change with circumferencial direction, and, the external diameter that sensor stand is configured in than the steering knuckle chimeric surface of external component more leans on internal side diameter, the terminal that takes out the output signal of spinning speed pickup erects to radial outside, and be connected with the electric wiring of deriving at Zhou Fangxiang along the end of external component, therefore, can simplify rotation speed sensor associated components on every side, thereby assembling work further improves, and can prevent that maintaining part and electric wiring from stretching out and draft hitch generation interference to radial outside from external component.
In addition, in aspect the present invention the 15, described rotation speed sensor is made of a plurality of magnetic detecting elements, these magnetic detecting elements and terminal and to be connected the leading-out portion of these terminals and electric wiring mold formed integratedly in described maintaining part by synthetic resin, therefore can prevent from vehicle ' to corrode etc., thereby aspect permanance, have high reliability because of slungshot etc. causes that maintaining part is damaged and come off or produces.
The bearing apparatus for wheel that has rotary speed detecting device of the present invention has: external component is formed with multiple row outboard raceway face on the interior week of this external component; Internal part, this internal part is made of following part: the wheel hub wheel, its at one end portion have the wheel mounting flange that is used to install wheel integratedly, and be formed with vertically the path end difference cylindraceous that extends in periphery; And be pressed into inner ring on this path end difference of taking turns hub wheel, be formed with the inboard raceways face of facing with described multiple row outboard raceway face in the periphery of this internal part; The multiple row rolling body, they rotate and freely are contained between each roller surface of described internal part and described external component; Scrambler, its outer being embedded on the described inner ring; Circular sensor stand, it is installed in the end of described external component in the mode of facing with described scrambler; And rotation speed sensor, itself and described sensor stand are integrally molded, and with described scrambler across predetermined radial play and opposed, have in the bearing apparatus for wheel of rotary speed detecting device at this, described scrambler forms circular, and constitute its characteristic relevant and alternately and equally spaced change with circumferencial direction, and, car inboard at this scrambler disposes seal, the sealing part constitutes by being installed on also mutual first and second seal pads of facing the ring-type of configuration of described sensor stand and inner ring respectively, therefore, even comprising bearing arrangement when the finished product assembly line of automobile is carried, the lateral joint parts are embedded under the wheel hub wheel state before, and under rigorous environment, during actual travel, can prevent reliably that also foreign matters such as Magnaglo from invading between the test section of scrambler and rotation speed sensor from the outside.Thereby, improve the reliability of the rotational speed detection of wheel significantly.
And the bearing apparatus for wheel that has rotary speed detecting device of the present invention has: external component is formed with multiple row outboard raceway face on the interior week of this external component; Internal part, this internal part is made of following part: the wheel hub wheel, its at one end portion have the wheel mounting flange that is used to install wheel integratedly, and be formed with vertically the path end difference cylindraceous that extends in periphery; And be pressed at least one inner ring on this path end difference of taking turns hub wheel, be formed with the multiple row inboard raceways face of facing with described multiple row outboard raceway face in the periphery of this internal part; The multiple row rolling body, they rotate and freely are contained between each roller surface of described internal part and described external component; Scrambler, its outer being embedded on the described inner ring; And sensor stand, it is made of following part: circular chimeric ring, and it is installed in the end of described external component; And maintaining part, it closes with this chimeric loops, and in this maintaining part, be embedded with described scrambler across the opposed rotation speed sensor of being scheduled to of air-gap; Have in the bearing apparatus for wheel of rotary speed detecting device at this, described scrambler forms circular, and constitute its characteristic relevant and alternately and equally spaced change with circumferencial direction, and, the external diameter that described sensor stand is configured in than the steering knuckle chimeric surface of described external component more leans on internal side diameter, the terminal that takes out from the output signal of described rotation speed sensor erects to radial outside, and be connected with the electric wiring of deriving at Zhou Fangxiang along the end of described external component, therefore, can simplify rotation speed sensor associated components on every side, thereby assembling work further improves, and can prevent that maintaining part and electric wiring from stretching out and producing with draft hitch to radial outside from external component and interfere.
Description of drawings
Fig. 1 is the longitudinal diagram of first embodiment of expression bearing apparatus for wheel of the present invention.
Fig. 2 be Fig. 1 want portion's enlarged drawing.
Fig. 3 is the longitudinal diagram of second embodiment of expression bearing apparatus for wheel of the present invention.
Fig. 4 be expression bearing apparatus for wheel of the present invention the 3rd embodiment want portion's enlarged drawing.
Fig. 5 be expression bearing apparatus for wheel of the present invention the 4th embodiment want portion's enlarged drawing.
Fig. 6 be expression bearing apparatus for wheel of the present invention the 5th embodiment want portion's enlarged drawing.
Fig. 7 be expression bearing apparatus for wheel of the present invention the 6th embodiment want portion's enlarged drawing.
Fig. 8 is the longitudinal diagram of the 7th embodiment of expression bearing apparatus for wheel of the present invention.
Fig. 9 is the outboard profile of Fig. 8.
Figure 10 (a) be Fig. 8 want portion's enlarged drawing.(b) be the outboard profile of (a).
Figure 11 is illustrated in the sectional view of the position different with Figure 10 (a).
Figure 12 wants portion's enlarged drawing for the 8th embodiment of expression bearing apparatus for wheel of the present invention.
Figure 13 wants portion's enlarged drawing for the 9th embodiment of expression bearing apparatus for wheel of the present invention.
Figure 14 wants portion's enlarged drawing for the tenth embodiment of expression bearing apparatus for wheel of the present invention.
Figure 15 is the longitudinal diagram of the existing bearing apparatus for wheel of expression.
Figure 16 be Figure 15 want portion's enlarged drawing.
Symbol description
1,1 ' wheel hub wheel; 1a, 6a inboard raceways face; 1b, 44a path end difference; The 1c serration; The rolling bearing of 2 multiple rows; 3 internal parts; 4 external components; 4a outboard raceway face; 4b car body mounting flange; 4c steering knuckle chimeric surface; The 4d end difference; 5 rolling bodys; 6,6 ', 44 inner rings; The 6b large end face; 7 wheel mounting flanges; The 7a boss bolt; 8 reinforcing portion; 9 retainers; The seal in the 10 cars outside; 11, the seal of 11 ', 32 car inboards; 12 lateral joint parts; 13 shoulders; 14 hold-down nuts; 15,35,39 sensor stands; 16,16 ' chimeric ring; The 16a fitting portion; The 16b flange part; 16c, 21a, 22a, 25a, 37a cylindrical portion; 17,40 maintaining parts; 18 perforation; 19,38,43 magnetic coders; 20 rotation speed sensors; 21 first seal pads; 21b, 22b, 25b, 27b, 30b, 33c, 37b vertical plate part; 22,22 ', 33 second seal pads; The 22c tongue piece; 23,26,28,29,31 labyrinths; 24 seal members; 24a edge lip envelope; 24b railway grease lip envelope; Interlabium envelope among the 24c; 25,37,45 pedestals; 27,30 guard shields; 27a, 30a first cylindrical portion; 27c, 30c second cylindrical portion; The chimeric cylindrical portion of 33a; The big footpath of 33b cylindrical portion; 34 elastomeric elements; 41 terminals; 42 electric wirings; The 42a leading-out portion; 101 external components; 101a outboard raceway face; 101b car body mounting flange; 102 internal parts; 103 rolling bodys; 104 wheel mounting flanges; The 104a boss bolt; 105 take turns hub wheel; 105a, 106a inboard raceways face; 105b path end difference; The 105c serration; 106 inner rings; 107 retainers; 108,109 seals; 110 lateral joint parts; 111 bar portions; 112 first seal pads; 113 second seal pads; The 113a cylindrical portion; The 113b vertical plate part; 114 magnetic coders; 115 is metal-cored; 116 seal members; 116a edge lip envelope; 116b, 116c footpath labiad envelope; 117 chimeric tubes; The chimeric tube of 117a portion; 117b inward flange portion; 118 maintaining parts; 119 sensor stands; 120 rotation speed sensors; 121 minim gaps; The N steering knuckle.
Embodiment
The bearing apparatus for wheel that has rotary speed detecting device of the present invention has:
External component, it has the car body mounting flange that is used to be installed on the draft hitch outside in week integratedly, is being formed with multiple row outboard raceway face interior week;
Internal part, it is made of following part: the wheel hub wheel, it at one end has the wheel mounting flange that is used to install wheel in the portion integratedly, is formed with a side's who faces with described multiple row outboard raceway face inboard raceways face and the path end difference cylindraceous that extends vertically from this inboard raceways face on periphery; And inner ring, it is pressed into this path end difference of taking turns hub wheel, and is formed with the opposing party's who faces with described multiple row outboard raceway face inboard raceways face;
The multiple row rolling body, its rotation freely is contained between each roller surface of described internal part and external component;
Scrambler, its outer being embedded on the described inner ring;
Circular sensor stand, it is installed on the end of described external component in the mode of facing with this scrambler; And
Rotation speed sensor, itself and described sensor stand are integrally molded, and with described scrambler across predetermined radial play and opposed,
Have in the bearing apparatus for wheel of rotary speed detecting device at this,
Described scrambler forms circular, by having sneaked into the magnetic powder on Zhou Fangxiang by alternately the magnetization have the magnetic coder of magnetic pole N, S to constitute, and, car inboard at this magnetic coder is equipped with seal, and the sealing part constitutes by being installed on also mutual first and second seal pads of facing the ring-type of configuration of described sensor stand and inner ring respectively.
Below, with reference to the accompanying drawings embodiments of the present invention are at length described.
Fig. 1 is the longitudinal diagram of first embodiment of the expression bearing apparatus for wheel that has a rotary speed detecting device of the present invention, Fig. 2 be Fig. 1 want portion's enlarged drawing.In addition, in the following description, will the state in being assemblied in vehicle under the side in the outer part of vehicle be called the car outside (left side among the figure), and will be called car inboard (right side among the figure) near center side.
This bearing apparatus for wheel that has rotary speed detecting device is used for driving wheel, possesses the so-called third generation structure of rolling bearing 2 blocking that make wheel hub wheel 1 and multiple row.
The rolling bearing 2 of multiple row has the rolling body (ball) 5,5 of external component 4, internal part 3 and multiple row, external component 4 is made by the medium carbon steel that S53C etc. contains the carbon of 0.40～0.80wt%, externally has the car body mounting flange 4b that is used to be installed on the steering knuckle N on the periphery of parts 4 integratedly.Externally be formed with outboard raceway face 4a, the 4a of multiple row on the interior week of parts 4, and be formed with the hardened layer of skin hardness in 54～64HRC scope by high-frequency quenching.
On the other hand, wheel hub wheel 1 has the wheel mounting flange 7 that is used to install wheel (not shown) integratedly on the end in the car outside, planted boss bolt 7a on the circumference position of halving of this wheel mounting flange 7.In addition, on the periphery of wheel hub wheel 1, be formed with: with the outboard raceway face 4a of described multiple row, a side's that 4a faces inboard raceways face 1a; And the path end difference 1b cylindraceous that extends vertically from this inboard raceways face 1a.In addition, make the end of this path end difference 1b form reinforcing portion 8 to the radial outside plastic yield.Inner ring 6 is pressed on this path end difference 1b, is formed with inboard raceways face 6a with the outboard raceway face 4a of described multiple row, the opposing party that 4a faces in the periphery of inner ring 6.In addition, inner ring 6 is reinforced portion 8 and is fixed on vertically on the wheel hub wheel 1, forms so-called self-sustaining (self-retaining) structure.Thus, do not need as in the past to be firmly fastened to the precompressed amount of controlling, therefore, can realize light weight/densification and improve the intensity/permanance of wheel hub wheel 1 by nut etc., and can this precompressed amount of long term maintenance.Here, internal part 3 is meant wheel hub wheel 1 and is pressed on this inner ring of taking turns hub wheel 16.
Externally outboard raceway face 4a, the 4a of parts 4 and and their multiple row inboard raceways face 1a, 6a of facing between contain the rolling body 5,5 of multiple row respectively, rolling body 5,5 is held device 9,9 and is held in and can freely rolls.In addition, externally the end of parts 4 is equipped with seal 10,11, prevents that the railway grease leakage of bearing enclosed inside and rainwater and dust etc. from invading bearing inside from the outside.
In the present embodiment, shown in Fig. 2 amplifies, form the end that circular sensor stand 15 is installed on external component 4, constitute by chimeric ring 16 and the maintaining part 17 that combines with this chimeric ring 16.Chimeric ring 16 integral body form circular, and are made of following part: be pressed into the fitting portion 16a cylindraceous on the periphery of external component 4; From the flange part 16b of this fitting portion 16a to the radially inner side extension; And the cylindrical portion 16c that extends vertically from this flange part 16b.This chimeric ring 16 is by the punch process such as corrosion resistant plate with corrosion resistance are formed.In addition, be formed with perforation 18 at a plurality of positions of the Zhou Fangxiang of this cylindrical portion 16c, maintaining part 17 is mold formed integratedly by synthetic resin.In addition, under the tight state of contact of end face of flange part 16b that makes chimeric ring 16 and external component 4, sensor stand 15 is installed on the end of external component 4, simultaneously, sets seal 11 in the car inboard of sensor stand 15.
Be embedded with rotation speed sensor 20 in the inside of maintaining part 17, this rotation speed sensor 20 is opposed across predetermined end play with magnetic coder 19 described later.Rotation speed sensor 20 is made of following part: Hall element, magnetoresistive element (MR element) etc. corresponding to magnetic flux flow to and change the magnetic detecting element of characteristic; And be assembled with the IC that the output waveform of this magnetic detecting element is carried out the waveform shaping circuit of shaping.
The seal 11 of car inboard forms roughly by being installed on sensor stand 15 and inner ring 6, cross section respectively that first and second seal pads 21,22 of the ring-type of L word shape constitute, and first seal pad 21 and second seal pad 22 are mutually in the face of configuration.Second seal pad 22 has: be embedded in the cylindrical portion 22a on the inner ring 6 outward; And from the vertical plate part 22b of this cylindrical portion 22a to the radial outside extension.At the leading section of this vertical plate part 22b, the outstanding vertically tongue piece 22c that is provided with ring-type constitutes labyrinth 23 with the cylindrical portion 16c of sensor stand 15 across small radial play.In addition, second seal pad 22 is by to the austenite stainless steel plate SUS304 of the JIS standard (system etc.) or carry out punch process through the cold-rolled steel sheet (the SPCC system of JIS standard etc.) of antirust processing and form.
On the other hand, first seal pad 21 is by being embedded in the cylindrical portion 21a in the sensor stand 15 and constituting to the vertical plate part 21b that radially inner side extends from the end of this cylindrical portion 21a, and sulfuration is bonded with seal member 24, and sealing parts 24 have edge lip envelope (side lip) 24a, railway grease lip envelope (grease lip) 24b and middle interlabium envelope (lip) 24c integratedly.Sealing parts 24 are made of elastomeric elements such as rubber.
Here, the vertical plate part 22b sliding contact of the edge lip envelope 24a and second seal pad 22, in addition, the cylindrical portion 22a sliding contact of railway grease lip envelope 24b and the middle interlabium envelope 24c and second seal pad 22.In addition, the maintaining part 17 across sensor stand 15 disposes the pedestal of being made by steel plate 25 at the opposition side of seal 11.This pedestal 25 is by the corrosion resistant plate (the SUS430 system of JIS standard etc.) to ferromagnetism body steel plate, for example ferrite, and the cold-rolled steel sheet (the SPCC system of JIS standard etc.) that perhaps passes through antirust processing carries out punch process and forms roughly L word shape of cross section.This pedestal 25 is by being embedded in the cylindrical portion 25a on the inner ring 6 outward and constituting to the vertical plate part 25b that radial outside extends from this cylindrical portion 25a.In addition, sulfuration is bonded with magnetic coder 19 integratedly on the face of the car inboard of this vertical plate part 25b, and this magnetic coder 19 is to have sneaked into magnetic powder such as ferrite and form in the rubber elastomeric material.This magnetic coder 19 is alternately magnetized on Zhou Fangxiang magnetic pole N, S, constitutes the rotary encoder that the wheel rotational speed detects usefulness.
Like this, in the present embodiment, in circular sensor stand 15, be equipped with rotation speed sensor 20, car inboard at this rotation speed sensor 20 is embedded with seal 11, and at the car inboard of sealing part 11 formation labyrinth 23, therefore, even comprising bearing arrangement when the finished product of automobile is made the assembly line carrying, lateral joint parts 12 are embedded under wheel hub wheel 1 state before, and under rigorous environment, during actual travel, can prevent reliably that also foreign matters such as Magnaglo from invading between the test section of magnetic coder 19 and rotation speed sensor 20 from the outside.Thereby, can improve the reliability of the rotational speed detection of wheel significantly.And, densification radially can be realized, and the associated components of rotation speed sensor 20 etc. can be simplified, further improve assembling work.
In addition, in the present embodiment, as rotary speed detecting device, illustration the active rotary speed detecting device that constitutes by magnetic coder 19 and rotation speed sensor 20, described rotation speed sensor 20 is made of magnetic detecting elements such as Hall elements, but rotary speed detecting device of the present invention is not limited thereto, and for example also can be the passive type that the coil etc. by the ring-type of magnetic coder, magnet and coiling constitutes.
Fig. 3 is the longitudinal diagram of second embodiment of the expression bearing apparatus for wheel that has a rotary speed detecting device of the present invention.In addition, present embodiment has only the installation portion of seal of car inboard different with above-mentioned embodiment (Fig. 1) basically, gives same numeral and omits detailed description thereof for other same area, same parts or position with identical function.
The seal 11 of car inboard is identical with above-mentioned embodiment in the present embodiment, but the structure difference of installation portion.That is, seal 11 forms roughly by being installed on sensor stand 15 and inner ring 6 ', cross section respectively that first and second seal pads 21,22 of the ring-type of L word shape constitute, and first seal pad 21 and second seal pad 22 are mutually in the face of configuration.Here, the cylindrical portion 22a of second seal pad 22 is embedded in inner ring 6 ' outward, and that the width of inner ring 6 ' forms is narrower than the width of above-mentioned inner ring 6, so cylindrical portion 22a is installed into more side-prominent in car than the large end face 6b of inner ring 6 '.Thus, light weight/densification can be further promoted, the fuel consumption and the performance of vehicle can be improved.
Fig. 4 be the expression bearing apparatus for wheel that has a rotary speed detecting device of the present invention the 3rd embodiment want portion's enlarged drawing.In addition, present embodiment has only the structure of labyrinth different with above-mentioned second embodiment (Fig. 3) basically, gives identical label and omits detailed description thereof for other same area, same parts or position with identical function.
The seal 11 ' of car inboard forms roughly by being installed on sensor stand 15 and inner ring 6 ', cross section respectively that first and second seal pads 21,22 ' of the ring-type of L word shape constitute, and first seal pad 21 and second seal pad 22 ' are mutually in the face of configuration.Second seal pad 22 ' is by the vertical plate part 22b formation that is embedded in the cylindrical portion 22a on the inner ring 6 ' outward and extends to radial outside from this cylindrical portion 22a.The cylindrical portion 21a of this vertical plate part 22b and first seal pad 21 is opposed across small radial play, constitutes labyrinth 26.
Be equipped with guard shield (shield) 27 in the car inboard of more leaning on of seal 11 ' here.This guard shield 27 is made of following part: be embedded in the first cylindrical portion 27a in the sensor stand 15; From the vertical plate part 27b of this first cylindrical portion 27a to the radially inner side extension; And the second cylindrical portion 27c that extends vertically from this vertical plate part 27b, the cross section of this guard shield 27 forms roughly コ word shape.In addition, the vertical plate part 22b of this vertical plate part 27b and above-mentioned second seal pad 22 ' faces and formation labyrinth 28 across small end play.In addition, the shoulder 13 of second cylindrical portion 27c of this guard shield 27 and lateral joint parts 12 is faced and formation labyrinth 29 across small radial play.
Like this, in the present embodiment, car inboard at seal 11 ' is equipped with guard shield 27, and except the labyrinth 26 of seal 11 ', between seal 11 ' and guard shield 27, constitute labyrinth 28, between the shoulder 13 of guard shield 27 and lateral joint parts 12, constitute labyrinth 29, therefore, even comprising parts of bearings when the finished product of automobile is made the assembly line carrying, lateral joint parts 12 are embedded under wheel hub wheel 1 state before, and under rigorous environment, during actual travel, can prevent reliably that also foreign matters such as Magnaglo from invading between the test section of magnetic coder 19 and rotation speed sensor 20 from the outside.
Fig. 5 be the expression bearing apparatus for wheel that has a rotary speed detecting device of the present invention the 4th embodiment want portion's enlarged drawing.In addition, present embodiment is the variation of above-mentioned the 3rd embodiment (Fig. 4), has only the shape difference of guard shield, gives same numeral and omits detailed description thereof for other same area, same parts or position with identical function.
The car inboard of more leaning at seal 11 ' is equipped with guard shield 30.This guard shield 30 is made of following part: be embedded in the first cylindrical portion 30a in the sensor stand 15; From the vertical plate part 30b of this first cylindrical portion 30a to the radially inner side extension; And the second cylindrical portion 30c that extends vertically from this vertical plate part 30b, the cross section of seal 11 ' forms roughly コ word shape.In addition, the end face of the shoulder 13 of second cylindrical portion 30c of this guard shield 30 and lateral joint parts 12 and inner ring 6 ' across small clearance plane to and constitute labyrinth 29,31 respectively.
Like this, in the present embodiment, car inboard at seal 11 ' is equipped with guard shield 30, and except the labyrinth 26 of seal 11 ', between the end face of the shoulder 13 of guard shield 30 and lateral joint parts 12 and inner ring 6 ', constitute labyrinth 29 respectively, 31, therefore, even comprising parts of bearings when the finished product of automobile is made the assembly line carrying, lateral joint parts 12 are embedded under wheel hub wheel 1 state before, and under rigorous environment, during actual travel, can prevent reliably that also foreign matters such as Magnaglo from invading between the test section of magnetic coder 19 and rotation speed sensor 20 from the outside.
Fig. 6 be the expression bearing apparatus for wheel that has a rotary speed detecting device of the present invention the 5th embodiment want portion's enlarged drawing.In addition, have only seal local different of car inboard, give identical label and omit detailed description thereof for other same area, same parts or position with identical function with above-mentioned second embodiment (Fig. 3).
In the present embodiment, form the end that circular sensor stand 15 is installed on external component 4.This sensor stand 15 is made of chimeric ring 16 and the maintaining part 17 that combines with this chimeric ring 16.
The seal 32 of car inboard forms roughly by the cross section, and first and second seal pads 21,33 of the ring-type of L word shape constitute, first seal pad 21 and second seal pad 33 are embedded in respectively on the external diameter of the cylindrical portion 16c of chimeric ring 16 and inner ring 6 ', and mutually in the face of configuration.First seal pad 21 is by being embedded in the cylindrical portion 21a in the sensor stand 15 and constituting to the vertical plate part 21b that radially inner side extends from the end of this cylindrical portion 21a.Sulfuration is bonded with seal member 24 integratedly on first seal pad 21, and sealing parts 24 are made of elastomeric elements such as rubber, and have edge lip envelope 24a, railway grease lip envelope 24b and middle interlabium envelope 24c integratedly.
On the other hand, second seal pad 33 passes through austenite stainless steel sheet material (the SUS304 system of JIS standard etc.), the cold-rolled steel sheet (the SPCC system of JIS standard etc.) that perhaps passes through antirust processing carries out punch process and forms, and has: be embedded in the chimeric cylindrical portion 33a on the inner ring 6 ' outward; Diameter forms the big footpath cylindrical portion 33b bigger than the diameter of this chimeric cylindrical portion 33a; And from the vertical plate part 33c of this big footpath cylindrical portion 33b to the radial outside extension.
The vertical plate part 33c sliding contact of described edge lip envelope 24a and second seal pad 33, railway grease lip envelope 24b and middle interlabium seal 24c respectively with the big footpath cylindrical portion 33b sliding contact of second seal pad 33.In addition, the front end of the vertical plate part 33c in second seal pad 33 and the cylindrical portion 21a of described first seal pad 21 are opposed across small radial play, constitute labyrinth 23.Thus, the sealing of the seal 32 of car inboard is further improved.
Here, the big footpath cylindrical portion 33b of second seal pad 33 is configured to from the large end face 6b of inner ring 6 ' side-prominent in car.Thus, the width dimensions of inner ring 6 ' can be suppressed in the necessary Min., thereby can further promote the light weight/miniaturization of bearing apparatus for wheel, improve the fuel consumption and the performance of vehicle.
In the present embodiment, the cylindrical portion of second seal pad 33 is bent and is processed into by being embedded in the two-stage structure that chimeric cylindrical portion 33a on the inner ring 6 ' and diameter form the big footpath cylindrical portion 33b bigger than the diameter of chimeric cylindrical portion 33a outward, therefore, even big footpath cylindrical portion 33b is configured to from the large end face 6b of inner ring 6 ' outstanding, also can guarantee the rigidity of second seal pad 33, and keep sealing property.
In addition, the elastomeric element 34 of the ring-type that constitutes by O type ring etc. by the annulus elasticity installation between the external diameter of big footpath cylindrical portion 33b and inner ring 6 ' (among the figure shown in the dotted line), thereby can improve the sealing property of the fitting portion of chimeric cylindrical portion 33a and inner ring 6 ' significantly, can prevent stably in a long term that rainwater etc. from invading bearing inside from the outside.
Fig. 7 be the expression bearing apparatus for wheel that has a rotary speed detecting device of the present invention the 6th embodiment want portion's enlarged drawing.In addition, have only the structure of test section different, give identical label and omit detailed description thereof for other same area, same parts or position with identical function with above-mentioned first embodiment (Fig. 2).
In the present embodiment, form the end that circular sensor stand 35 is installed on external component 4.This sensor stand 35 is made of chimeric ring 16 and the maintaining part 36 that combines with this chimeric ring 16.In addition, chimeric ring 16 is made of following part: be pressed into the fitting portion 16a cylindraceous on the periphery of external component 4; From the flange part 16b of this fitting portion 16a to the radially inner side extension; And the cylindrical portion 16c that extends vertically from this flange part 16b, the integral body of chimeric ring 16 forms circular.In addition, be formed with perforation 18 at a plurality of positions of the Zhou Fangxiang of cylindrical portion 16c, maintaining part 36 is mold formed integratedly by synthetic resin.In addition, seal 11 is installed between the cylindrical portion 16c and inner ring 6 of sensor stand 35, and making under the tight state of contact of end face of flange part 16b and external component 4, sensor stand 35 is pressed into the end of being fixed in external component 4.Thus, can realize densification radially, and simplify the associated components of rotation speed sensor 20 etc., further improve assembling work.
On the other hand, on the external diameter of inner ring 6, be pressed into the pedestal of making by steel plate 37.This pedestal 37 is by the steel plate to the ferromagnetism body, the stainless steel materials of ferrite (the SUS430 system of JIS standard etc.) for example, and the cold-rolled steel sheet (the SPCC system of JIS standard etc.) that perhaps passes through antirust processing carries out punch process and forms roughly L word shape of cross section.In addition, this pedestal 37 is by being pressed into the cylindrical portion 37a on the inner ring 6 and constituting to the vertical plate part 37b that radial outside extends obliquely from this cylindrical portion 37a.In addition, sulfuration is bonded with magnetic coder 38 integratedly on the side of the car inboard of this vertical plate part 37b, and this magnetic coder 38 forms by sneak into magnetic powder such as ferrite in the rubber elastomeric material.This magnetic coder 38 is alternately magnetized on Zhou Fangxiang magnetic pole N, S, and the rotational speed that constitutes wheel detects the rotary encoder of usefulness.
In the present embodiment, the vertical plate part 37b that is bonded with magnetic coder 38 is formed slopely, and therefore, the volume of magnetized portion increases, and can substantially increase magnetic flux density.Thus, can set the magnetic coder 38 and the air-gap of rotation speed sensor 20 bigger, design freedom improves, and assembling work is simplified.In addition, tilt, also can reduce the depth of section of sensor stand 35 self, realize the densification of bearing portion by this.
It is the scopes of 20 degree to 45 degree that the pitch angle of above-mentioned magnetic coder 38 and rotation sensor 20 is set at respect to perpendicular line.This is because the effect of this pitch angle to tilt then can not obtain less than 20 degree needs axial space on the contrary and surpass 45 degree, and is not preferred.
Fig. 8 is the longitudinal diagram of the 7th embodiment of the expression bearing apparatus for wheel that has a rotary speed detecting device of the present invention, Fig. 9 is the outboard profile of Fig. 8, Figure 10 (a) be Fig. 8 want portion's enlarged drawing, Figure 10 (b) is the outboard profile of Figure 10 (a), Figure 11 be with the sectional view of Figure 10 (a) diverse location.In addition, present embodiment has only the part of associated components of electric wiring different with above-mentioned embodiment basically, and other same area, same parts or position with identical function are given identical label and omitted detailed description thereof.
This bearing apparatus for wheel that has rotary speed detecting device is used for driving wheel, possesses the so-called third generation structure after rolling bearing 2 blocking of wheel hub wheel 1 ' and multiple row.
Wheel hub wheel 1 ' has integratedly and is used for wheel (not shown) is installed on wheel mounting flange 7 on the end in the car outside, has planted boss bolt 7a on the circumference position of halving of this wheel mounting flange 7.In addition, on the periphery of wheel hub wheel 1 ', be formed with and the outboard raceway face 4a of described multiple row, the side's that 4a faces (the car outside) inboard raceways face 1a and the path end difference 1b cylindraceous that extends vertically from this inboard raceways face 1a, on the interior week of wheel hub wheel 1 ', be formed with serration (perhaps spline) 1c.In addition, inner ring 6 ' is pressed on the path end difference 1b, is formed with inboard raceways face 6a with the outboard raceway face 4a of described multiple row, the opposing party (car inboard) that 4a faces in the periphery of inner ring 6 '.Here, internal part 3 is meant wheel hub wheel 1 ' and is pressed into this and takes turns inner ring 6 ' on the hub wheel 1 '.
In the present embodiment, externally the end of the car inboard of parts 4 is equipped with sensor stand 39.Shown in Figure 10 (a) amplified, this sensor stand 39 was made of chimeric ring 16 ' and the maintaining part 40 that combines with this chimeric ring 16 '.Chimeric ring 16 ' is made of following part: be pressed into the fitting portion 16a cylindraceous on the periphery of external component 4; From the flange part 16b of this fitting portion 16a to the radially inner side extension; Coniform 16c ' from this flange part 16b side-prominent and front undergauge in car; And from the axially extended cylindrical portion 16c of the front end edge of this coniform 16c ', the integral body of chimeric ring 16 ' forms circular.This chimeric ring 16 ' is by the punch process such as corrosion resistant plate with corrosion resistance are formed.Particularly bring harmful effect in order to avoid to the detection performance of rotation speed sensor 20 described later, preferably by the steel plate of nonmagnetic material, for example austenite stainless steel plate (the SUS304 system of JIS standard etc.) forms this chimeric ring 16 '.Thus, can the long term maintenance permanance, and can keep accuracy of detection accurately.
In addition, be formed with perforation 18 at a plurality of positions of the Zhou Fangxiang of cylindrical portion 16c ', maintaining part 40 is mold formed integratedly.In addition, seal 11 ' is embedded in the cylindrical portion 16c of chimeric ring 16 ', and under the tight state of contact of end face of flange part 16b that makes chimeric ring 16 ' and external component 4, sensor stand 39 is pressed into the end of being fixed in external component 4.In addition, here, illustration maintaining part 40 and the mold formed integratedly example of chimeric ring 16 ', be not limited thereto, though diagram not also can be installed on the mode that maintaining part is given prominence to radially inner side from perforation with its part on the chimeric ring.
Maintaining part 40 forms roughly L word shape of cross section by the synthetic resin of PA66 (polyamide 66) etc.Be embedded with rotation speed sensor 20 in these maintaining part 40 inside, this rotation speed sensor 20 and magnetic coder 19 described later are across predetermined end play (air-gap) and opposed.Here, as among Figure 10 (b) schematically expression like that, the terminal 41 that takes out the output signal of spinning speed pickup 20 erects to radial outside, and is connected to end along external component 4 on the electric wiring 42 of circumferentially derivation via leading-out portion 42a.Rotation speed sensor 20 is mold formed integratedly in described maintaining part 40 by synthetic resin with the leading-out portion 42a that is connected with terminal 41 and electric wiring 42.Thus, can prevent that in vehicle ' the maintaining part that causes because of slungshot etc. is damaged and come off or produces corrosion etc., thus raising permanance and reliability.In addition, can prevent that maintaining part 40 and electric wiring 42 from stretching out and interfere with draft hitch (not shown) to radial outside from external component 4, and leading-out portion 42a can be disposed in the space of radial outside of seal 11 ', thereby can realize the densification of maintaining part 40.
The seal 11 ' of car inboard forms roughly by the cross section, and first and second seal pads 21,22 ' of the ring-type of L word shape constitute, and first seal pad 21 and second seal pad 22 ' are entrenched in respectively on the external diameter of the cylindrical portion 16c of the chimeric ring 16 ' in the sensor stand 39 and inner ring 6 ', mutually in the face of configuration.First seal pad 21 is by being embedded in the cylindrical portion 21a in the sensor stand 39 and constituting to the vertical plate part 21b that radially inner side extends from the end of this cylindrical portion 21a.Sulfuration is bonded with seal member 24 integratedly on first seal pad 21, and sealing parts 24 are made of elastomeric elements such as rubber, and have edge lip envelope 24a, railway grease lip envelope 24b and middle interlabium envelope 24c integratedly.
On the other hand, second seal pad 22 ' passes through austenite stainless steel plate (the SUS304 system of JIS standard etc.), the cold-rolled steel sheet (the SPCC system of JIS standard etc.) that perhaps passes through antirust processing carries out punch process and forms, and has: be embedded in the cylindrical portion 22a on the inner ring 6 ' outward; And from the vertical plate part 22b of this cylindrical portion 22a to the radial outside extension.The vertical plate part 22b sliding contact of the described edge lip envelope 24a and second seal pad 22 ', the cylindrical portion 22a sliding contact of railway grease lip envelope 24b and the middle interlabium envelope 24c and second seal pad 22 '.In addition, the front end of the vertical plate part 22b in second seal pad 22 ' and the cylindrical portion 21a of described first seal pad 21 are opposed across small radial play, constitute labyrinth 26.Thus, the sealing of the seal 11 ' of car inboard is further improved.
Here, the cylindrical portion 22a of second seal pad 22 ' has the chimeric width that can guarantee the stretching endurance degree of being scheduled to and is entrenched on the external diameter of inner ring 6 ', and the part of cylindrical portion 22a and vertical plate part 22b are configured to from the large end face of inner ring 6 ' outstanding.Thus, the width dimensions of inner ring 6 ' can be suppressed in the necessary Min., and can further realize the light weight/densification of bearing apparatus for wheel.
Figure 11 shows the sectional view of the position of staggering in a circumferential direction with Figure 10 (a).As shown in the drawing, by electric wiring 42 being prolonged from sensor stand 39 along circumferencial direction and taking out, can make the taking-up portion of electric wiring 42 be disposed at external diameter than the steering knuckle chimeric surface 4c of external component 4 more by internal side diameter, particularly be the more close internal side diameter of external diameter that is configured in than the end difference 4d of external component 4.Thus, rotation speed sensor 20 and sensor stand 39 can not be embedded in the steering knuckle chimeric surface 4c of external component 4 to the steering knuckle N that makes car body and operation that bearing arrangement is installed on the car body produce to hinder.Therefore, can carry out simply bearing apparatus for wheel is assembled to assembling work on the steering knuckle N, and the electric wiring 42 that can avoid combining with rotation speed sensor 20 extends vertically, thereby can avoid electric wiring 42 and constant velocity joint (not shown) to interfere.In addition, owing to take out electric wiring 42, the axial length of bearing arrangement integral body is increased from circumferencial direction.
In addition, in the present embodiment, sensor stand 39 be installed on the chimeric circular chimeric ring 16 ' in the end of external component 4 on, this chimeric ring 16 ' is made of following part: be embedded in the fitting portion 16a cylindraceous on the end difference 4d of external component 4 outward; From the flange part 16b of this fitting portion 16a to the radially inner side extension; Coniform 16c ' from this flange part 16b side-prominent and front undergauge in car; And from the axially extended cylindrical portion 16c of the front end edge of this coniform 16c ', therefore, can than the external diameter of the steering knuckle chimeric surface 4c of external component 4 more by sensors configured support 39 easily in the space of internal side diameter.Chimeric ring 16 ' part especially for sensor installation support 39 has cone shape, thus, can form the space diametrically, thereby can prevent that sensor stand 39 is more outstanding than the external diameter of external component 4.
Figure 12 be the expression bearing apparatus for wheel that has a rotary speed detecting device of the present invention the 8th embodiment want portion's enlarged drawing.In addition, in the present embodiment, have only the structure of test section different with above-mentioned the 7th embodiment (Figure 10) basically, other same area, same parts or position with identical function are given identical label and omitted detailed description thereof.
In the present embodiment, seal 32 is installed in the annulus that is formed by the cylindrical portion 16c of chimeric ring 16 ' and inner ring 6 ', and under the tight state of contact of end face of flange part 16b that makes chimeric ring 16 ' and external component 4, sensor stand 39 is pressed into the end of being fixed in external component 4.
The seal 32 of car inboard forms roughly by being installed on sensor stand 39 and inner ring 6 ', cross section respectively that first and second seal pads 21,33 of the ring-type of L word shape constitute, and first seal pad 21 and second seal pad 33 are mutually in the face of configuration.Second seal pad 33 has: be embedded in the chimeric cylindrical portion 33a on the inner ring 6 ' outward; The cylindraceous big footpath cylindrical portion 33b that extends vertically from this chimeric cylindrical portion 33a; And from the vertical plate part 33c of this big footpath cylindrical portion 33b to the radial outside extension.In addition, the edge lip envelope 24a in first seal pad 21 and the vertical plate part 33c sliding contact of second seal pad 33, and, the big footpath cylindrical portion 33b sliding contact of railway grease lip envelope 24b and the middle interlabium envelope 24c and second seal pad 33.In addition, sulfuration integratedly is bonded with magnetic coder 43 on the outer peripheral face of the chimeric cylindrical portion 33a in second seal pad 33, and this magnetic coder 43 forms by sneak into magnetic powder such as ferrite in elastomeric elements such as rubber.This magnetic coder 43 is alternately magnetized on Zhou Fangxiang magnetic pole N, S, constitutes the rotary encoder that the wheel rotational speed detects usefulness.
In addition, elastomeric elements 44 such as O type ring are installed in the annulus between the big footpath cylindrical portion 33b in second seal pad 33 and the external diameter of inner ring 6 ', are prevented that rainwater and dust etc. are from fitting portion intrusion bearing inside.In addition,, show second seal pad 33 and the example that magnetic coder 43 engages integratedly here, still be not limited thereto, second seal pad 33 and magnetic coder 43 splits are constituted.
Like this, in the present embodiment, in circular sensor stand 39, be equipped with rotation speed sensor 20, car inboard at this rotation speed sensor 20 is equipped with seal 32, therefore, even under rigorous environment, during actual travel, can prevent reliably that also foreign matters such as Magnaglo from invading between the test section of magnetic coder 43 and rotation speed sensor 20 from the outside.Thereby, can improve the reliability of the rotational speed detection of wheel significantly.And, can simplify rotation speed sensor 20 associated components on every side, further improve assembling work.
Figure 13 be the expression bearing apparatus for wheel that has a rotary speed detecting device of the present invention the 9th embodiment want portion's enlarged drawing.Present embodiment has only the structure of seal of car inboard different with above-mentioned the 8th embodiment (Figure 10) basically, and other same area, same parts or position with identical function are given identical label and omitted detailed description thereof.
In the present embodiment, externally the end of the car inboard of parts 4 is equipped with sensor stand 39.This sensor stand 39 is made of chimeric ring 16 ' and the maintaining part that combines with this chimeric ring 16 ' 40.In addition, the seal 11 ' of car inboard is installed between the cylindrical portion 16c and inner ring 44 of chimeric ring 16 '.
The seal 11 ' of car inboard is by the cross section forms roughly first and second seal pads 21, the 22 ' formation of the ring-type of L word shape by punch process.First seal pad 21 is entrenched on the cylindrical portion 16c of chimeric ring 16 '., on inner ring 44, be formed with path end difference 44a in the end of big footpath side here, second seal pad 22 ' is entrenched on this path end difference 44a.In addition, first and second seal pads 21,22 ' are faced configuration mutually.
In the present embodiment, on inner ring 44, be formed with path end difference 44a, and the seal 11 ' of car inboard is installed in the formed annulus between this path end difference 44a and sensor stand 39, therefore, the depth of section of seal 11 ' can be fully guaranteed, sealing property can be improved significantly.
Figure 14 be the expression bearing apparatus for wheel that has a rotary speed detecting device of the present invention the tenth embodiment want portion's enlarged drawing.In addition, present embodiment is represented the variation of above-mentioned the 9th embodiment (Figure 13), basically the structure difference of having only test section is given identical label and is omitted detailed description thereof other same area, same parts or position with identical function.
In the present embodiment, magnetic coder 43 is via pedestal 45 outer being embedded on the inner ring 44a.Pedestal 45 is by to ferromagnetism body steel plate, ferrite series stainless steel plate (the SUS430 system of JIS standard etc.) for example, and the cold-rolled steel sheet (the SPCC system of JIS standard etc.) that perhaps passes through antirust processing carries out punch process and forms circular.Sulfuration is bonded with magnetic coder 43 integratedly on the outer peripheral face of this pedestal 45, and this magnetic coder 43 forms by sneak into magnetic powder such as ferrite in the rubber elastomeric material.This magnetic coder 43 is alternately magnetized on Zhou Fangxiang magnetic pole N, S, constitutes the rotary encoder that the wheel rotational speed detects usefulness.
Like this, in the present embodiment, also in circular sensor stand 39, be equipped with rotation speed sensor 20, car inboard at this rotation speed sensor 20 is equipped with seal 11 ', therefore, even under rigorous environment, during actual travel, can prevent reliably that also foreign matters such as Magnaglo from invading between the test section of magnetic coder 43 and rotation speed sensor 20 from the outside.Thereby, can improve the reliability of the rotational speed detection of wheel significantly.
More than, embodiments of the present invention are illustrated, but the present invention is not limited by above embodiment at all, it is illustration, in the scope that does not break away from main idea of the present invention, certainly can also implement in every way, the record of scope of the present invention by claims disclose, the meaning that is equal to and all interior changes of scope of also comprising in claims being put down in writing.
The bearing apparatus for wheel that has rotary speed detecting device of the present invention can be applicable to the bearing apparatus for wheel of the rotary speed detecting device of built-in any kind in the inner ring rotational structure.
Claims (14)
1, a kind of bearing apparatus for wheel that has rotary speed detecting device, this bearing arrangement has:
External component is formed with multiple row outboard raceway face on the interior week of this external component;
Internal part, this internal part is made of following part: the wheel hub wheel, its at one end portion have the wheel mounting flange that is used to install wheel integratedly, and be formed with vertically the path end difference cylindraceous that extends in periphery; And be pressed at least one inner ring on this path end difference of taking turns hub wheel, be formed with the multiple row inboard raceways face of facing with described multiple row outboard raceway face in the periphery of this internal part;
The multiple row rolling body, they rotate and freely are contained between each roller surface of described internal part and described external component;
Scrambler, its outer being embedded on the described inner ring;
Circular sensor stand, it is installed in the end of described external component in the mode of facing with described scrambler, and is made of following part: circular chimeric ring, it is installed in the end of described external component; And maintaining part, it closes with this chimeric loops, and in this maintaining part, be embedded with described scrambler across the opposed rotation speed sensor of being scheduled to of air-gap, this rotation speed sensor and described sensor stand are integrally molded;
It is characterized in that,
Described scrambler forms circular, and constitute its characteristic relevant and alternately and equally spaced change with circumferencial direction, car inboard at this scrambler disposes seal via described sensor stand, and the sealing part constitutes by being installed on also mutual first and second seal pads of facing the ring-type of configuration of described sensor stand and inner ring respectively;
The car medial extremity of described external component is than the more close car of the car medial extremity of the described inner ring outside; And
Axial car inboard at described sensor is provided with described seal,
Position at the outside diameter of the inside side in footpath of the outer peripheral face of described external component and inner ring, the terminal that takes out from the output signal of described rotation speed sensor erects to radial outside, and be connected at the electric wiring of circumferentially deriving along the end of described external component
Described maintaining part, described seal and the leading-out portion that links described terminal and described electric wiring are arranged on the inside side in footpath of outer peripheral face of described external component and the outside diameter of inner ring.
2, the bearing apparatus for wheel that has rotary speed detecting device according to claim 1 is characterized in that,
Described scrambler by having sneaked into the magnetic powder Zhou Fangxiang by alternately the magnetization have the magnetic coder of magnetic pole N, S to constitute.
3, according to claim 1 or the 2 described bearing apparatus for wheel that have rotary speed detecting device, it is characterized in that,
Described sensor stand constitutes by the chimeric ring of steel plate system and with the integrally molded maintaining part of this chimeric ring, and described chimeric ring has: be pressed into the fitting portion cylindraceous on the periphery of described external component; The flange part that extends and closely contact with the end face of described external component to radially inner side from this fitting portion; And, in this cylindrical portion, be embedded with described first seal pad from the cylindrical portion that this flange part extends vertically.
4, the bearing apparatus for wheel that has rotary speed detecting device according to claim 3 is characterized in that,
Described chimeric ring is by forming nonmagnetic material and steel plate punch process with corrosion resistance.
5, the bearing apparatus for wheel that has rotary speed detecting device according to claim 1 and 2 is characterized in that,
Periphery at described inner ring is formed with the path end difference, and described seal is installed in the annulus that is formed between this path end difference and the described sensor stand.
6, the bearing apparatus for wheel that has rotary speed detecting device according to claim 1 and 2 is characterized in that,
Described second seal pad has the outer vertical plate part that is embedded in the cylindrical portion on the described inner ring and extends to radial outside from this cylindrical portion, and sulfuration is bonded with seal member integratedly on described first seal pad, lip envelope and the described cylindrical portion and the vertical plate part sliding contact of sealing parts.
7, the bearing apparatus for wheel that has rotary speed detecting device according to claim 1 and 2 is characterized in that,
Described second seal pad has: be embedded in the cylindrical portion on the described inner ring outward; Further form the big footpath cylindrical portion in big footpath from this cylindrical portion; And from the vertical plate part of this big footpath cylindrical portion to the radial outside extension, and sulfuration integratedly is bonded with seal member on described first seal pad, lip envelope and the described big footpath cylindrical portion and the vertical plate part sliding contact of sealing parts.
8, the bearing apparatus for wheel that has rotary speed detecting device according to claim 7 is characterized in that,
Elasticity is equipped with the elastomeric element of ring-type in the annulus between the external diameter of described big footpath cylindrical portion and described inner ring.
9, the bearing apparatus for wheel that has rotary speed detecting device according to claim 6 is characterized in that,
Described cylindrical portion is configured to from the large end face of described inner ring outstanding.
10, the bearing apparatus for wheel that has rotary speed detecting device according to claim 1 and 2 is characterized in that,
Described scrambler and rotation speed sensor are configured to have predetermined pitch angle.
11, the bearing apparatus for wheel that has rotary speed detecting device according to claim 1 and 2 is characterized in that,
The car inboard of more leaning at described seal is equipped with the roughly guard shield of コ word shape of cross section, and the shoulder of this guard shield and lateral joint parts is faced and the formation labyrinth across small radial play.
12, the bearing apparatus for wheel that has rotary speed detecting device according to claim 11 is characterized in that,
Described guard shield is made of following part: be embedded in first cylindrical portion in the described sensor stand; From the vertical plate part of this first cylindrical portion to the radially inner side extension; And, described vertical plate part and described second seal pad are faced and the formation labyrinth across small end play from second cylindrical portion that this vertical plate part extends vertically.
13, the bearing apparatus for wheel that has rotary speed detecting device according to claim 11 is characterized in that,
Described guard shield is made of following part: be embedded in first cylindrical portion in the described sensor stand; From the vertical plate part of this first cylindrical portion to the radially inner side extension; And, the end face of described second cylindrical portion and described inner ring is faced and the formation labyrinth across small end play from second cylindrical portion that this vertical plate part extends vertically.
14, the bearing apparatus for wheel that has rotary speed detecting device according to claim 1 is characterized in that,
Described rotation speed sensor is made of a plurality of magnetic detecting elements, these magnetic detecting elements and terminal and to be connected the leading-out portion of these terminals and electric wiring mold formed integratedly in described maintaining part by synthetic resin.
Applications Claiming Priority (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004264194A JP4628049B2 (en) | 2004-09-10 | 2004-09-10 | Wheel bearing device with rotation speed detector |
| JP264194/2004 | 2004-09-10 | ||
| JP273180/2004 | 2004-09-21 | ||
| JP294107/2004 | 2004-10-06 | ||
| JP300362/2004 | 2004-10-14 | ||
| JP300363/2004 | 2004-10-14 | ||
| JP327307/2004 | 2004-11-11 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101040130A CN101040130A (en) | 2007-09-19 |
| CN100533149C true CN100533149C (en) | 2009-08-26 |
Family
ID=36157543
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005800345716A Expired - Fee Related CN100533149C (en) | 2004-09-10 | 2005-09-09 | Wheel bearing apparatus incorporated with a rotation speed detecting apparatus |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP4628049B2 (en) |
| CN (1) | CN100533149C (en) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009063069A (en) * | 2007-09-06 | 2009-03-26 | Ntn Corp | Wheel bearing device with rotation speed detection device |
| JP2011012796A (en) * | 2009-07-06 | 2011-01-20 | Ntn Corp | Bearing with rotation sensor |
| JP5626298B2 (en) * | 2012-09-18 | 2014-11-19 | 株式会社デンソー | Position detection device |
| ITTO20130715A1 (en) * | 2013-09-04 | 2015-03-05 | Skf Ab | HOLDING AND SIGNALING DEVICE, IN PARTICULAR FOR A ROLLING BEARING |
| CN103821941B (en) * | 2014-03-10 | 2016-09-07 | 董波 | There is the assembly oil sealing of sensing function |
| CN106163881B (en) * | 2014-12-08 | 2019-09-06 | 日立金属株式会社 | Vehicle-mounted detection device |
| JP6490995B2 (en) * | 2015-03-12 | 2019-03-27 | Ntn株式会社 | Wheel bearing device with rotation speed detector |
| JP2018071661A (en) * | 2016-10-28 | 2018-05-10 | Ntn株式会社 | Bearing device for wheel |
| IT201700083818A1 (en) * | 2017-07-24 | 2019-01-24 | Skf Ab | SOUND WHEEL FOR HUB-WHEEL GROUP |
| US11796004B2 (en) * | 2019-06-12 | 2023-10-24 | Nok Corporation | Sealing device |
| CN112258008A (en) * | 2020-10-16 | 2021-01-22 | 恒大新能源汽车投资控股集团有限公司 | Method and device for treating foreign matters caught in wheel |
| CN114776715A (en) * | 2022-04-21 | 2022-07-22 | 洛阳轴承研究所有限公司 | Spacer assembly and bearing assembly |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH088343Y2 (en) * | 1990-09-06 | 1996-03-06 | 光洋精工株式会社 | Bearing sealing device |
| JPH087143Y2 (en) * | 1990-10-31 | 1996-03-04 | エヌティエヌ株式会社 | Rotational speed detector for wheel bearings |
| JPH112639A (en) * | 1997-04-18 | 1999-01-06 | Nippon Seiko Kk | Rolling bearing unit having rotary speed detector |
| JP4019537B2 (en) * | 1999-02-02 | 2007-12-12 | 株式会社ジェイテクト | Rolling bearing with rotational speed detector |
| JP2003254985A (en) * | 2002-03-04 | 2003-09-10 | Nsk Ltd | Rolling bearing unit having rotating speed detecting device |
| JP4258214B2 (en) * | 2002-12-24 | 2009-04-30 | 株式会社ジェイテクト | Rolling bearing device |
| JP2004205008A (en) * | 2002-12-26 | 2004-07-22 | Koyo Seiko Co Ltd | Rolling bearing device |
-
2004
- 2004-09-10 JP JP2004264194A patent/JP4628049B2/en not_active Expired - Fee Related
-
2005
- 2005-09-09 CN CNB2005800345716A patent/CN100533149C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP4628049B2 (en) | 2011-02-09 |
| CN101040130A (en) | 2007-09-19 |
| JP2006077919A (en) | 2006-03-23 |
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