CN101646946B - Sensor holder, and bearing device adapted for use for wheel, having rotation speed detection device, and integral with the sensor holder - Google Patents
Sensor holder, and bearing device adapted for use for wheel, having rotation speed detection device, and integral with the sensor holder Download PDFInfo
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- CN101646946B CN101646946B CN2007800467924A CN200780046792A CN101646946B CN 101646946 B CN101646946 B CN 101646946B CN 2007800467924 A CN2007800467924 A CN 2007800467924A CN 200780046792 A CN200780046792 A CN 200780046792A CN 101646946 B CN101646946 B CN 101646946B
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Abstract
A sensor holder has an encoder and a wheel speed sensor arranged opposite to the encoder, via a predetermined air gap. An annular fitting member is formed by pressing an anti-corrosive steel plate. A holding portion is formed of injection moldable synthetic resin and is integrally formed with the annular fitting member. The wheel speed sensor is embedded in the holding portion. At least a surface of the annular fitting member contacting the holding portion is roughened by shot blasting to have a surface roughness Ra of 0.8 or more.
Description
Technical field
The present invention relates to have the sensor keeper of the wheel speed sensors that is used to detect vehicle wheel speed, and relate to the bearing apparatus for wheel that is combined with the wheel speed detector.
Background technology
Known a kind of bearing apparatus for wheel, it can be with respect to the draft hitch support wheel, and the wheel speed detector that is used for the inspection vehicle wheel speed combines with it with control anti-lock braking system (ABS).Such bearing arrangement generally includes: the wheel speed detector, this is taken turns speed detector and comprises magnetic coder, this magnetic coder has a plurality of magnetic poles along its periphery arranged alternate, and be combined in the packoff, the sealing device is arranged in and is used for holding betwixt between the inner part and exterior part of rolling element (ball); And the wheel speed detecting sensor, it is used for detecting according to wheel the pole change of magnetic coder.
Wheel speed sensors is installed on this steering knuckle after bearing apparatus for wheel has been installed on the steering knuckle that forms draft hitch usually.Recently, a kind of bearing apparatus for wheel that is combined with the wheel speed detector has been proposed, wherein the wheel speed detecting sensor is combined in the wheel bearing, reducing the size of bearing apparatus for wheel, and eliminates the trouble of the air gap between regulating wheel speed sensors and the magnetic coder.
The embodiment of the bearing apparatus for wheel that is combined with the wheel speed detector shown in known Fig. 8.This is taken turns speed detector and comprises: be assemblied in the magnetic coder 51 on the inner ring 50; Loop sensor keeper 53 on the end relative that is installed in exterior part 52 with magnetic coder 51; And wheel speed sensors 54, this wheel speed sensors is embedded in the maintaining part 57 that forms sensor keeper 53 and is arranged to via predetermined end play relative with magnetic coder 51.In the following description, the outside when being installed in bearing arrangement on the vehicle is called " outside " (left side among the figure), and the inboard when being installed in bearing arrangement on the vehicle is called " inboard " (right side among the figure).
Magnetic coder 51 comprises the rubber magnet that is formed by the elastic body that is mixed with the magnetic such as ferrite, and is configured for detecting the rotary encoder of wheel speed, and this rotary encoder has along the N utmost point of its periphery arranged alternate and the S utmost point.Magnetic coder 51 is bonded to by steel plate by the vulcanizing adhesive one and is pressed into the side with annular base 55 that L shaped cross section forms.
On the other hand, ring oiler 61 form by the compacting of anticorrosive stainless steel and comprise the cylindrical portion 61a that is press fitted in the inner ring 50, the erection part 61b that extends radially outwardly from cylindrical portion 61a and from the terminal shaft of erection part 61b to the annular tongue 61c that stretches out.Tongue 61c is relative with the cylindrical portion 56c of annular assembly parts 56 with little gap, forms labyrinth sealing 64 between them.Lateral lip 63a contacts slidably with the erection part 61b of ring oiler 61, and grease lip 63b contacts with the cylindrical portion 61a of ring oiler 61 slidably with middle interlabium 63c.
According to such structure, because wheel speed sensors 54 is embedded in the loop sensor keeper 53, seal 59 is arranged in the inboard of wheel speed sensors 54, the inboard of this external seal 59 is provided with labyrinth sealing 64, thereby can prevent reliably under the vehicle ' condition of harshness that foreign matter such as magnetic from entering the space between magnetic coder 51 and the wheel speed sensors 54, thereby improve the reliability that wheel speed detects.
Refer to Patent Document 1: the Jap.P. spy opens communique No. 300289/2005.
Summary of the invention
The problem to be solved in the present invention
Yet, when long term exposure when harsh conditions (for example, muddy water, salt solution, high temperature or low temperature), worry annular assembly parts 56 and can separate with its integrally moulded maintaining part.This can cause the air gap between magnetic coder 51 and the wheel speed sensors 54 to increase, and accurately detects thereby can not carry out desirable wheel speed.
In addition, another problem that exists is, when the instrument that is press-fitted that has a structure of C shape roughly in utilization is press fitted into annular assembly parts 56 on the exterior part 52,, therefore can not directly on these assembly parts 56, exert pressure because pressure must be applied on the end face of the maintaining part of being made by resilient material 57.The deficiency that contacts that this makes between the end face of annular assembly parts 56 and exterior part 52 sometimes has constant air gap all the time thereby be difficult to make between magnetic coder 51 and the sensor keeper 57.
Therefore, the object of the present invention is to provide a kind of sensor keeper, it can keep the air gap between scrambler and the wheel speed sensors for a long time, and carries out desirable wheel speed and detect.
Another purpose provides a kind of bearing apparatus for wheel that is combined with the wheel speed detector, and it is compact, and can prevent that foreign matter from entering test section, thereby improves its durability and reliability.
A purpose provides a kind of bearing apparatus for wheel that is combined with the wheel speed detector again, and it can not produce sealing problem, thereby can improve the reliability that wheel speed detects with more done with high accuracy air gap control.
The means of dealing with problems
To achieve these goals, according to a first aspect of the invention, provide a kind of sensor keeper, this sensor keeper comprises: scrambler, this scrambler form its characteristic relevant with periphery alternately and are equally spacedly changed; And wheel speed sensors, this wheel speed sensors is via predetermined air gap and described scrambler positioned opposite; This sensor keeper is characterised in that: described sensor keeper also comprises the annular assembly parts that formed by the compacting of anticorrosive steel plate and by the synthetic resin and the integrally formed maintaining part of described annular assembly parts of injection moldable; Described wheel speed sensors is embedded in the described maintaining part; And it is more than 0.8 that the surface that contacts with described maintaining part of described at least annular assembly parts makes surface roughness Ra by the shot blast roughening.
In the sensor keeper of first aspect, wheel speed sensors is via predetermined air gap and scrambler positioned opposite, because the sensor keeper also comprises the annular assembly parts that formed by the compacting of anticorrosive steel plate and by the synthetic resin and the integrally formed maintaining part of described annular assembly parts of injection moldable, described wheel speed sensors is embedded in the described maintaining part, and it is more than 0.8 that the surface that contacts with described maintaining part of described at least annular assembly parts makes surface roughness Ra by the shot blast roughening, therefore can increase the lip-deep jog that contacts with maintaining part, therefore thereby increase this surperficial area, can improve the adhesiveness between the maintaining part of annular assembly parts and sensor keeper.Therefore, can prevent from for a long time to separate between maintaining part and the annular assembly parts, thereby can detect by the wheel speed that the air gap that keeps between scrambler and the wheel speed sensors is realized ideal.
As in second aspect, limiting, preferably described scrambler comprises the rubber magnet that is formed by the elastic body that is mixed with magnetic, and be configured for detecting the rotary encoder of wheel speed, this rotary encoder has along the N utmost point of its periphery arranged alternate and the S utmost point, and described wheel speed sensors has the magnetic detecting element of its characteristic with flux change.This makes that can carry out wheel speed with low-cost and high reliability detects.
As in the third aspect, limiting, further preferably between the periphery of the periphery of described maintaining part and described annular assembly parts, form stage portion.This makes can not only be with the end face that is press-fitted instrument extruding maintaining part, thereby and can be pressed through a part of removing maintaining part and form the side of the annular assembly parts that stage portion exposes.Therefore, can utilize to have the doughnut structure rather than the instrument that is press-fitted of C shape structure roughly, thereby realize high-precision air gap control, and not exist any sealing problem ground to realize the wheel speed detection of high reliability.
As limiting in fourth aspect, preferably described stage portion has the doughnut structure that has constant width along the periphery of described maintaining part.This structure that can make the instrument of being press-fitted is annular, thereby makes extruding force constant around the periphery of annular assembly parts, correspondingly makes extrusion and displacement constant around the periphery of annular assembly parts.
According to a fifth aspect of the invention, a kind of bearing apparatus for wheel that is combined with the wheel speed detector is provided, this bearing apparatus for wheel comprises: exterior part, on its periphery, be formed with the car body mounting flange that is mounted on the suspension device for vehicle, also be formed with the outer raceway face of biserial on week within it; Inner part, this inner part comprises hub wheel and at least one inner ring, described hub wheel is formed with the wheel mounting flange at the one end, and have from the axially extended cylindrical portion of this wheel mounting flange, described inner ring is press fitted on the described cylindrical portion of described hub wheel, described hub wheel and raceway face described inner ring is formed with the biserial relative with raceway face outside the described biserial on their periphery in; Be contained in the biserial rolling element between the outer raceway face of the interior raceway face of described inner part and described exterior part; And the wheel speed detector that is used for the inspection vehicle wheel speed, this bearing apparatus for wheel is characterised in that: assemble scrambler on the periphery of described inner ring, the annular assembly parts of sensor keeper are press fitted on the end of described exterior part, via the maintaining part of the described sensor keeper disposed inboard seal at described scrambler, and to make surface roughness Ra by the shot blast roughening be more than 0.8 on the surface that contacts with described maintaining part of described at least annular assembly parts.
In the rotary-type bearing apparatus for wheel of inner ring that is combined with the wheel speed detector, owing on the periphery of described inner ring, assemble scrambler, the annular assembly parts of sensor keeper are press fitted on the end of described exterior part, via the maintaining part of described sensor keeper disposed inboard seal at described scrambler, and it is more than 0.8 that the surface that contacts with described maintaining part of described at least annular assembly parts makes surface roughness Ra by the shot blast roughening, thereby can provide a kind of bearing apparatus for wheel that is combined with the wheel speed detector, it can prevent reliably under the vehicle ' condition of harshness that foreign matter such as magnetic from entering the space between magnetic coder and the wheel speed sensors, thereby can improve the reliability that wheel speed detects.
Limit in aspect the 6th, further preferably described annular assembly parts comprise the department of assembly on the periphery of the end that is press fitted into described exterior part, the flange part that extends radially inwardly from this department of assembly and from the axially extended cylindrical portion of this flange part; And described seal is installed in the annular opening that forms between described cylindrical portion and the described inner ring.This feasible radial dimension that can reduce bearing arrangement can be simplified its circumferential component (for example wheel speed sensors), thereby further improves its assembling processibility.
In aspect the 7th, limit, preferably described seal comprises annular seal plate and ring oiler, and they all form in the annular opening that has L shaped cross section and form between the described cylindrical portion of described annular assembly parts and described inner ring and are arranged to toward each other; Described seal pad comprises the core metal in the described cylindrical portion that is assembled to described annular assembly parts and utilizes the vulcanizing adhesive one to be bonded to the seal member of this core metal that the sealing parts have the lateral lip that slidably contacts with described ring oiler.This makes it possible to realize excellent sealing, and can comprise the test section of scrambler and wheel speed sensors with respect to the outside seal of bearing arrangement.
As in eight aspect, limiting, preferably between the periphery of the periphery of described maintaining part and described annular assembly parts, form stage portion.This makes can realize high-precision air gap control, and can not exist any sealing problem ground to realize that the wheel speed of high reliability detects.
Limit in aspect the 9th, further preferably described stage portion has the doughnut structure that has constant width along the periphery of described maintaining part.This structure that can make the instrument of being press-fitted is annular, thereby makes extruding force constant around the periphery of annular assembly parts, correspondingly makes extrusion and displacement constant around the periphery of annular assembly parts, and realizes high-precision air gap control.
The invention effect
According to sensor keeper of the present invention, because it comprises: scrambler, this scrambler form its characteristic relevant with periphery alternately and are equally spacedly changed; And wheel speed sensors, this wheel speed sensors is via predetermined air gap and described scrambler positioned opposite; And this sensor keeper is characterised in that: described sensor keeper also comprises the annular assembly parts that formed by the compacting of anticorrosive steel plate and by the synthetic resin and the integrally formed maintaining part of described annular assembly parts of injection moldable; Described wheel speed sensors is embedded in the described maintaining part; And it is more than 0.8 that the surface that contacts with described maintaining part of described at least annular assembly parts makes surface roughness Ra by the shot blast roughening, therefore can increase the lip-deep jog that contacts with maintaining part, therefore thereby increase this surface area, can improve the adhesiveness between the maintaining part of annular assembly parts and sensor keeper.Therefore, can prevent from for a long time to separate between maintaining part and the annular assembly parts, thereby can detect by the wheel speed that the air gap that keeps between scrambler and the wheel speed sensors is realized ideal.
In addition, according to the bearing apparatus for wheel that is combined with the wheel speed detector of the present invention, because this bearing apparatus for wheel comprises: exterior part, on its periphery, be formed with the car body mounting flange that is mounted on the suspension device for vehicle, also be formed with the outer raceway face of biserial on week within it; Inner part, this inner part comprises hub wheel and at least one inner ring, described hub wheel is formed with the wheel mounting flange at the one end, and have from the axially extended cylindrical portion of this wheel mounting flange, described inner ring is press fitted on the described cylindrical portion of described hub wheel, described hub wheel and raceway face described inner ring is formed with the biserial relative with raceway face outside the described biserial on their periphery in; Be contained in the biserial rolling element between the outer raceway face of the interior raceway face of described inner part and described exterior part; And the wheel speed detector that is used for the inspection vehicle wheel speed, this bearing apparatus for wheel is characterised in that: assemble scrambler on the periphery of described inner ring, the annular assembly parts of sensor keeper are press fitted on the end of described exterior part, and via the maintaining part of described sensor keeper disposed inboard seal at described scrambler, therefore a kind of bearing apparatus for wheel that is combined with the wheel speed detector can be provided, it can prevent reliably under the vehicle ' condition of harshness that foreign matter such as magnetic from entering the space between magnetic coder and the wheel speed sensors, thereby can improve the reliability that wheel speed detects.
Implement optimal mode of the present invention
Implementing optimal mode of the present invention is a kind of sensor keeper, this sensor keeper comprises the wheel speed sensors via predetermined air gap and circular encoder positioned opposite, this sensor keeper is characterised in that: described scrambler comprises the rubber magnet that is formed by the elastic body that is mixed with magnetic and is configured for detecting the rotary encoder of wheel speed, this rotary encoder has along the N utmost point of its periphery arranged alternate and the S utmost point, and described wheel speed sensors has the magnetic detecting element of its characteristic with flux change, described sensor keeper also comprises the annular assembly parts that formed by the compacting of anticorrosive steel plate and by the synthetic resin and the integrally formed maintaining part of described annular assembly parts of injection moldable, described wheel speed sensors is embedded in the described maintaining part, and to make surface roughness Ra by the shot blast roughening be more than 0.8 on the surface that contacts with described maintaining part of described at least annular assembly parts.
Description of drawings
Fig. 1 is the longitudinal sectional view that is combined with first embodiment of the bearing apparatus for wheel of taking turns speed detector of the present invention;
Fig. 2 is the side view of Fig. 1;
Fig. 3 is the partial enlarged drawing of Fig. 1;
Fig. 4 is the key diagram of the shot blast process of annular assembly parts of the present invention;
Fig. 5 is the longitudinal sectional view that is combined with second embodiment of the bearing apparatus for wheel of taking turns speed detector of the present invention;
Fig. 6 is the partial enlarged drawing of Fig. 5;
Fig. 7 is the side view of sensor keeper of the present invention; And
Fig. 8 is that longitudinal sectional view is amplified in the part of the bearing apparatus for wheel that is combined with the wheel speed detector of prior art.
Description of reference numerals
1 ... exterior part 1a ... outer raceway face
1b ... car body mounting flange 2 ... inner part
3 ... rolling element (ball) 4 ... hub wheel
4a, 5a ... interior raceway face 4b ... cylindrical portion
4c ... the 4d of sawtooth portion ... shoulder
5 ... inner ring 6 ... the wheel mounting flange
6a ... hub bolt 6b ... substrate
7 ... retainer 8 ... outer seal
9 ... inboard seal 10,25 ... the sensor keeper
11,26 ... annular assembly parts 11a, 26a ... the department of assembly
11b, 26b ... flange part 11c, 15a, 22a, 26a ... cylindrical portion
12,27 ... maintaining part 13,28 ... the hole
14 ... seal pad 15 ... ring oiler
15b, 22b ... erection part 16 ... core metal
17 ... seal member 17a ... lateral lip
17b ... grease lip 17c ... middle interlabium
18 ... labyrinth sealing 19 ... magnetic coder
20 ... wheel speed sensors 21 ... wire harness
22 ... base portion 23 ... turntable
24 ... nozzle 26c ... rake
50 ... inner ring 51 ... magnetic coder
52 ... exterior part 53 ... the sensor keeper
54 ... wheel speed sensors 55 ... base portion
56 ... annular assembly parts 56a ... the department of assembly
56b ... flange part 56c ... cylindrical portion
57 ... maintaining part 58 ... the hole
59 ... inboard seal 60 ... seal pad
61 ... ring oiler 61a ... cylindrical portion
61b ... erection part 61c ... tongue
62 ... core metal 63 ... seal member
63a ... lateral lip 63b ... the grease lip
63c ... middle interlabium 64 ... labyrinth sealing
Δ A ... stage portion
Embodiment
First embodiment
Hereinafter with reference to accompanying drawing preferred implementation of the present invention is described.
Fig. 1 is the longitudinal sectional view that is combined with first embodiment of the bearing apparatus for wheel of taking turns speed detector of the present invention, and Fig. 2 is the side view of Fig. 1, and Fig. 3 is the partial enlarged drawing of Fig. 1, and Fig. 4 is the key diagram of the shot blast process of annular assembly parts of the present invention.
The bearing apparatus for wheel that is combined with the wheel speed detector of the present invention is so-called " third generation " type, and it comprises exterior part 1, inner part 2 and biserial rolling element (ball) 3,3.Exterior part 1 is that 0.40～0.80% medium carbon steel (for example S53C) is made by carbon content by weight, and be formed with the car body mounting flange 1b that is suitable for being installed on the steering knuckle (not shown) on its periphery, also be formed with on the side face within it by high-frequency induction hardening and harden into biserial outer raceway face 1a, the 1a that skin hardness is 58～64HRC.
On the other hand, inner part 2 comprises hub wheel 4 and the inner ring 5 that is press fitted on the hub wheel 4.Hub wheel 4 is the integrally formed wheel mounting flange 6 that the wheel (not shown) is installed that is useful on its outboard end, on its outer peripheral face, be formed with in one (outside) raceway face 4a and from the axially extended cylindrical portion 4b of interior raceway face 4a, integrally formed on the side face be useful on the 4c of sawtooth portion (or spline) that moment of torsion transmits within it.In addition, hub bolt 6a is fixed on the wheel mounting flange 6 in circumferential equidistant position.
In this embodiment, sensor keeper 10 is assemblied on the medial extremity of exterior part 1.As shown in clear in the enlarged drawing of Fig. 3, sensor keeper 10 comprises annular assembly parts 11 and maintaining part 12.Annular assembly parts 11 integral body form annular solid, and comprise the 11a of tubular department of assembly on the periphery that press fit over exterior part 1, the flange part 11b that extends radially inwardly from the 11a of department of assembly and from the axially extended cylindrical portion 11c of flange part 11b.
Maintaining part 12 is by forming by injection molding synthetic resin (for example PA (polyamide) 66), and wheel speed sensors 20 is embedded in the maintaining part 12.Wheel speed sensors 20 is via predetermined end play and magnetic coder 19 positioned opposite, and comprises: change the magnetic detecting element of characteristic, for example Hall element, magnetoresistive element (MR element) etc. with the flow direction of magnetic flux; And the IC that combines with waveform shaping circuit, it is used for the output waveform of magnetic detecting element is carried out shaping.This makes it possible to carry out the wheel speed detection of high reliability.
On the other hand, ring oiler 15 is formed by the steel plate compacting of austenite stainless steel plate (JIS SUS 304 etc.) or protection cold-reduced sheet (JIS SPCC etc.) and so on, and comprises cylindrical portion 15a and the erection part 15b that extends radially outwardly from this cylindrical portion 15a.The lateral lip 17a of seal member 17 contacts slidably with erection part 15b, and grease lip 17b contacts cylindrical portion 15a slidably with middle interlabium 17c.In addition, the end of the erection part 15b of ring oiler 15 is relative with sensor keeper 10 with little gap, and forms labyrinth sealing 18.
As shown in Figure 2, the phase place setting of wheel speed sensors 20, i.e. the phase place setting of maintaining part 12 is set in the radially first half office that begins from the horizontal level of annular assembly parts 11, and wire harness 21 is connected to maintaining part 12 with maintaining part 12 tangently.Therefore, can discharge the rainwater or the muddy water that enter from the outside downwards, and prevent that rainwater or muddy water from resting near the wheel speed sensors 20.In addition, the winding of carrying out wire harness 21 can be simplified, thereby the assembling processibility of sensor keeper 10 can be improved.
As discussed previously, the maintaining part 12 and the annular assembly parts 11 that form sensor keeper 10 are integrally molded.According to the present invention, making the treating the surperficial roughening that contacts with the synthetic resin that forms maintaining part 12 of annular assembly parts 11 and making surface roughness Ra is more than 0.8.That is to say, although the surface roughness Ra of the blank steel plate of annular assembly parts 11 usually in 0.2～0.6 scope, making this blank steel plate roughening make surface roughness Ra by shot blast is more than 0.8.Symbol " Ra " is the roughness geometric parameter symbol of JIS (JIS B0601-1994), represents arithmetic average roughness, promptly departs from the mean value of the absolute value deviation of average line.
Carry out shot blast by following steps as shown in Figure 4, that is: at first annular assembly parts 11 are placed on the turntable 23, make turntable 23 rotation then and the medium of steel ball and so on is ejected on the annular assembly parts 11 from shot blast nozzle 24.In this case, be that steel ball, the injection duration of 20 to 100 μ m is about 90 seconds using particle diameter, expulsion pressure is 1 to 3kg/cm
2Condition lower edge Fig. 4 in arrow moving nozzle 24 carry out shot blast.
As previously discussed, according to the present invention, owing to make the surperficial roughening that contacts with the resin of maintaining part 12 treated of annular assembly parts 11 by shot blast, and its surface roughness Ra is made as more than 0.8, thereby the jog of surface in contact increases, therefore the corresponding increase of contact area can improve the adhesiveness between the surface in contact of annular assembly parts 11 and maintaining part 12.Therefore, separate, thereby can keep predetermined air gap between magnetic coder 19 and the wheel speed sensors 20, and can have desirable wheel speed and detect even be exposed between the surface that also can prevent annular assembly parts 11 and maintaining part 12 under the severe rugged environment for a long time at bearing arrangement.
Although show the active speed detector of taking turns of the wheel speed sensors 20 that comprises magnetic coder 19 and have the magnetic detecting element such as Hall effect element in said embodiment, also can use to comprise the toroidal passive-type wheel of for example gear, magnet and winding speed detector.
Second embodiment
Fig. 5 is the longitudinal sectional view that is combined with second embodiment of the bearing apparatus for wheel of taking turns speed detector of the present invention, and Fig. 6 is the partial enlarged drawing of Fig. 5, and Fig. 7 is the side view of sensor keeper of the present invention.The difference of this second embodiment and first embodiment only is the structure of sensor keeper.Therefore, in second embodiment, also use identical Reference numeral refer to first embodiment in used parts have the same parts of identical function.
Similar with first embodiment, the sensor keeper 25 of second embodiment also is installed in the medial extremity of exterior part 1, and comprises to be assembled to annular assembly parts 26 on the end of exterior part 1 and the maintaining part 27 that is connected with annular assembly parts 26 one.
As shown in Figure 6, annular assembly parts 26 form the structure with general toroidal, and comprise the 26a of tubular department of assembly on the periphery that press fit over exterior part 1, the flange part 26b that extends radially inwardly from the 26a of department of assembly, from radially the slope inwardly rake 26c that extends and of flange part 26b from the axially extended cylindrical portion 26d of rake 26c.Annular assembly parts 26 can be formed by anticorrosive corrosion resistant plate or electroplating steel plate, perhaps can apply corrosion-resistant treatments on annular assembly parts 26 after presed-steel plate.By being set on rake 26c, some holes 28 make maintaining part 27 integrally molded with annular assembly parts 26 with the synthetic resin of clamping maintaining part securely 27.Seal 9 is assembled among the cylindrical portion 26d of annular assembly parts 26, and sensor keeper 25 is press fitted on the end of exterior part 1, and wherein flange part 26b closely contacts with the end face of exterior part 1.Wheel speed sensors 20 is embedded in the maintaining part 27, and via intended radial gap and magnetic coder 19 positioned opposite.
In second embodiment, between the periphery of the 26a of department of assembly of the periphery of maintaining part 27 and annular assembly parts 26, form stage portion Δ A.That is to say that the outer circumference diameter of maintaining part 27 forms the outer circumference diameter less than the 26a of department of assembly of annular assembly parts 26, thereby the portion radially outward of flange part 26b exposes from the periphery of maintaining part 27.Stage portion Δ A has the doughnut structure that has constant width along the periphery of maintaining part 27.
Fig. 7 shows when being press-fitted the instrument (not shown) and being press-fitted annular assembly parts 26 with shade, and annular assembly parts 26 and this are press-fitted the contact region between the instrument.This makes can not only be with the end face that is press-fitted instrument extruding maintaining part 27, thereby and can be pressed through a part of removing maintaining part 27 and form the side of the flange part 26b of the annular assembly parts 26 that stage portion Δ A exposes.Therefore, can utilize to have the doughnut structure rather than the instrument that is press-fitted of C shape structure roughly, thereby realize high-precision air gap control, and can not exist any sealing problem ground to realize the wheel speed detection of high reliability.
With reference to preferred implementation the present invention has been described.Obviously, those of ordinary skills are by reading and understanding above detailed description and will expect multiple modification and change.The present invention ought to be interpreted as comprising all this type of change and modification that fall within claims and the equivalent scope thereof.
Industrial applicibility
The bearing apparatus for wheel that is combined with the wheel speed detector of the present invention can be applicable to comprise the rotary-type bearing apparatus for wheel of inner ring of the wheel speed detector of any type.
Claims (8)
1. sensor keeper, this sensor keeper comprises: scrambler (19), this scrambler form its characteristic relevant with periphery alternately and are equally spacedly changed; And wheel speed sensors (20), this wheel speed sensors is via predetermined air gap and described scrambler (19) positioned opposite; This sensor keeper is characterised in that:
Described sensor keeper (10; 25) also comprise the annular assembly parts (11 that form by anticorrosive steel plate compacting; 26) and by the synthetic resin and the described annular assembly parts (11 of injection moldable; 26) integrally formed maintaining part (12; 27); Described annular assembly parts (11; 26) comprise the (11a of tubular department of assembly on the end that press fit over exterior part; 26a), from the described tubular (11a of department of assembly; Flange part (the 11b that 26a) extends radially inwardly; 26b), from described flange part (11b; 26b) radially the slope inwardly rake (26c) that extends and from the axially extended cylindrical portion (11c of described rake (26c); 26d); Described wheel speed sensors (20) is embedded in described maintaining part (12; 27) in; And described at least annular assembly parts (11; 26) and described maintaining part (12; 27) to make surface roughness Ra by the shot blast roughening be more than 0.8 on Jie Chu surface; In the inboard of described wheel speed sensors (20) seal (9) is set, sealing part (9) is assemblied in described annular assembly parts (11; 26) described cylindrical portion (11c; Between the external diameter of internal diameter 26d) and inner ring (5).
2. sensor keeper as claimed in claim 1, wherein said scrambler (19) comprises the rubber magnet that is formed by the elastic body that is mixed with magnetic, and be configured for detecting the rotary encoder of wheel speed, this rotary encoder has along the N utmost point of its periphery arranged alternate and the S utmost point, and wherein said wheel speed sensors (20) has the magnetic detecting element of its characteristic with flux change.
3. sensor keeper as claimed in claim 1 or 2 wherein forms stage portion (Δ A) between the periphery of the periphery of described maintaining part (27) and described annular assembly parts (26).
4. sensor keeper as claimed in claim 3, wherein said stage portion (Δ A) has the doughnut structure that has constant width along the periphery of described maintaining part (27).
5. one kind is combined with the bearing apparatus for wheel of taking turns speed detector, and this bearing apparatus for wheel comprises:
Exterior part (1) is formed with the car body mounting flange (1b) that is mounted on the suspension device for vehicle on its periphery, also be formed with on week within it the outer raceway face of biserial (1a, 1a);
Inner part (2), this inner part comprises hub wheel (4) and at least one inner ring (5), described hub wheel (4) is formed with wheel mounting flange (6) at the one end, and have from the axially extended cylindrical portion of this wheel mounting flange (6) (4b), described inner ring (5) is press fitted on the described cylindrical portion (4b) of described hub wheel (4), described hub wheel (4) and described inner ring (5) on their periphery, be formed with described biserial outside raceway face (1a, 1a) raceway face in the relative biserial (4a, 5a);
Be contained in described inner part (2) interior raceway face (4a, 5a) and outer raceway face (1a, 1a) the biserial rolling element (3,3) between of described exterior part (1); And
Be used for the wheel speed detector (19,20) of inspection vehicle wheel speed, this bearing apparatus for wheel is characterised in that:
On the periphery of described inner ring (5), assemble scrambler (19), sensor keeper (10; 25) annular assembly parts (11; 26) be press fitted on the end of described exterior part (1), and via described sensor keeper (10; 25) maintaining part (12; 27) at the disposed inboard seal (9) of described scrambler (19), described at least annular assembly parts (11; 26) and described maintaining part (12; 27) to make surface roughness Ra by the shot blast roughening be more than 0.8 on Jie Chu surface, described annular assembly parts (11; 26) comprise the (11a of tubular department of assembly on the end that press fit over exterior part; 26a), from the described tubular (11a of department of assembly; Flange part (the 11b that 26a) extends radially inwardly; 26b), from described flange part (11b; 26b) radially the slope inwardly rake (26c) that extends and from the axially extended cylindrical portion (11c of described rake (26c); 26d), described seal (9) is assemblied in described annular assembly parts (11; 26) described cylindrical portion (11c; Between the external diameter of internal diameter 26d) and inner ring (5).
6. the bearing apparatus for wheel that is combined with the wheel speed detector as claimed in claim 5, wherein said seal (9) comprises annular seal plate (14) and ring oiler (15), they all form has L shaped cross section and at described annular assembly parts (11; 26) described cylindrical portion (11c; 26d) and in the annular opening that forms between the described inner ring (5) be arranged to toward each other; And wherein said seal pad (14) comprises and is assembled to described annular assembly parts (11; 26) described cylindrical portion (11c; Core metal 26d) (16) and utilize the vulcanizing adhesive one to be bonded to the seal member (17) of this core metal (16), the sealing parts have the lateral lip (17a) that contacts slidably with described ring oiler (15).
7. as each described bearing apparatus for wheel that is combined with the wheel speed detector in the claim 5 to 6, wherein between the periphery of the periphery of described maintaining part (27) and described annular assembly parts (26), form stage portion (Δ A).
8. the bearing apparatus for wheel that is combined with the wheel speed detector as claimed in claim 7, wherein said stage portion (Δ A) has the doughnut structure that has constant width along the periphery of described maintaining part (27).
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2006339367A JP2008151623A (en) | 2006-12-18 | 2006-12-18 | Sensor holder and wheel-use bearing device having rotation speed detector with the same sensor holder built-in |
| JP339367/2006 | 2006-12-18 | ||
| JP2007002333A JP2008170219A (en) | 2007-01-10 | 2007-01-10 | Rotational speed detection device and bearing device for wheel with rotational speed detection device |
| JP002333/2007 | 2007-01-10 | ||
| PCT/JP2007/001369 WO2008075456A1 (en) | 2006-12-18 | 2007-12-06 | Sensor holder, and bearing device adapted for use for wheel, having rotation speed detection device, and integral with the sensor holder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101646946A CN101646946A (en) | 2010-02-10 |
| CN101646946B true CN101646946B (en) | 2011-06-29 |
Family
ID=39653938
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007800467924A Expired - Fee Related CN101646946B (en) | 2006-12-18 | 2007-12-06 | Sensor holder, and bearing device adapted for use for wheel, having rotation speed detection device, and integral with the sensor holder |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2008151623A (en) |
| CN (1) | CN101646946B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6019554B2 (en) * | 2011-09-01 | 2016-11-02 | 日産自動車株式会社 | Wheel bearing |
| CN114113666A (en) * | 2021-10-14 | 2022-03-01 | 人本股份有限公司 | Multistage magnetic ring structure of double-wheel-speed sensor of hub bearing |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003057070A (en) * | 2001-08-17 | 2003-02-26 | Ntn Corp | Magnetic encoder and bearing for wheel using the same |
| WO2005036183A1 (en) * | 2003-10-14 | 2005-04-21 | Nsk Ltd. | Hub unit for drive wheel |
| WO2006028209A1 (en) * | 2004-09-10 | 2006-03-16 | Ntn Corporation | Bearing device for wheel, having rotation speed detection device |
| JP2006329663A (en) * | 2005-05-23 | 2006-12-07 | Ntn Corp | Bearing unit for wheel with rotational speed detector |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006214920A (en) * | 2005-02-04 | 2006-08-17 | Nsk Ltd | Magnetic encoder and rolling bearing unit |
| JP4679192B2 (en) * | 2005-03-22 | 2011-04-27 | Ｎｔｎ株式会社 | Wheel bearing device with rotation speed detector |
-
2006
- 2006-12-18 JP JP2006339367A patent/JP2008151623A/en active Pending
-
2007
- 2007-12-06 CN CN2007800467924A patent/CN101646946B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003057070A (en) * | 2001-08-17 | 2003-02-26 | Ntn Corp | Magnetic encoder and bearing for wheel using the same |
| WO2005036183A1 (en) * | 2003-10-14 | 2005-04-21 | Nsk Ltd. | Hub unit for drive wheel |
| WO2006028209A1 (en) * | 2004-09-10 | 2006-03-16 | Ntn Corporation | Bearing device for wheel, having rotation speed detection device |
| JP2006329663A (en) * | 2005-05-23 | 2006-12-07 | Ntn Corp | Bearing unit for wheel with rotational speed detector |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101646946A (en) | 2010-02-10 |
| JP2008151623A (en) | 2008-07-03 |
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