CN100449183C - Sealing device with rotation detecting element - Google Patents
Sealing device with rotation detecting element Download PDFInfo
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- CN100449183C CN100449183C CNB2005800090897A CN200580009089A CN100449183C CN 100449183 C CN100449183 C CN 100449183C CN B2005800090897 A CNB2005800090897 A CN B2005800090897A CN 200580009089 A CN200580009089 A CN 200580009089A CN 100449183 C CN100449183 C CN 100449183C
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Abstract
A sealing device with a rotation detecting element, capable of detecting rotation even if fluid such as engine oil is an object to be sealed. The sealing device has a stationary side sealing element (seal ring)(12) fixed to the stationary side (3), a rotation side sealing element (slinger)(14) installed on the rotation side (2) and made to be in slidably tight-contact with the stationary side sealing element (12), and a to-be-detected circular disc (15) for rotation detection attached to the rotation side (2) and positioned more on the atmosphere side than a sealing/sliding section (S) between the stationary side sealing element (12) and the rotation side sealing element (14). The outer peripheral edge of the to-be-detected circular disc (15) closely faces in the radial direction the stationary side sealing element (12) side.
Description
Technical field
[0001] the present invention relates to be provided with the seal arrangement of the rotation detecting element of rotary encoder in a kind of seal arrangement of the axle Zhou Jinhang sealing of rotatingshaft in to Motor Vehicle, common mechanical, industrial machine etc.
Background technique
[0002] in Motor Vehicle,, need detect crank shaft angle (crank angle) of the rotation number of axletree or rotational velocity, motor etc. for the IGNITION CONTROL of measuring travelling speed and operating range, enforcement motor or fuel injection time control etc.Thereby because this rotation detection position also is the position that needs necessary sealing, all the time for example hereinafter the technology put down in writing of patent documentation 1 be well-known, promptly, can save the space of rotary encoder and seal arrangement installation position by the rotation detecting element of magnetic-type rotary encoder promptly is arranged on the turn side seal element to the seal arrangement of the axle Zhou Jinhang sealing of rotatingshaft integratedly with the magnetic disk.
Patent documentation 1: TOHKEMY 2002-48247
[0003] promptly, patent documentation 1 disclosed seal arrangement comprises: be fixed on sealing lip on the non rotatable shaft hole sleeve side, be installed on the rotatingshaft and with the above-mentioned sealing lip disc of sliding contact hermetically, constitute and the band magnetic disk that alternately formed different magnetic poles in a circumferential direction is bonded on this disc integratedly by the elastomeric elastic material of having sneaked into magnetic powder, with magnetic quantity transducer relatively near this band magnetic disk be arranged on the Stationary side.Thereby by the rotation of rotatingshaft, in case band magnetic disk rotate with disc, then from its near relative magnetic quantity transducer, output and the pulse signal of alternately answering by near the pole pair its detection faces.
[0004] still, patent documentation 1 disclosed seal arrangement, by disc that band magnetic disk has been installed and the sealing slide part of forming with the sealing lip of disc sliding contact, dust with atmospheric side is a sealed object, when being sealed object with the motor wet goods, the composed component of magnetic-type rotary encoder is arranged in the engine oil environmental gas.Thereby under this occasion, because the motor heat that transmits by engine oil makes a very bad impression to the magnetic field of being with the magnetic disk, even or the greasy filth in the engine oil by magnetic force sorption on the surface of band magnetic disk, also the magnetic field to band magnetic disk makes a very bad impression, and therefore worries from magnetic quantity transducer institute output signal characteristics curve (パ one Application) disorder.
Summary of the invention
Problem to be addressed by invention
[0005] the present invention is intended to the problems referred to above, and technical task of the present invention provides a kind of seal arrangement with rotation detecting element, even under with the condition of motor wet goods fluid as sealed object, also can detect rotation.
The technological scheme that addresses this problem
The present invention is a kind of seal arrangement with rotation detecting element, bent axle 2 is supported on the cylinder block of motor free to rotately, capsul 3 is fixed in above-mentioned cylinder block, seal arrangement 1 is arranged at above-mentioned capsul 3, boundary space to engine crankshaft chamber side and outside atmosphere side seals, and magnetic quantity transducer 4 is arranged on the above-mentioned cylinder block at above-mentioned atmospheric side, thereby detects the rotary state of above-mentioned bent axle 2, it is characterized in that, comprising:
Installing ring 11, it is fixed on the capsul 3, and comprises that tubular is pressed into the 11a of portion, tubular support 11b, the periphery footpath direction 11c of portion, the footpath direction 11e of portion of interior week; Above-mentioned tubular is pressed into the 11a of portion the cushion part 12a of above-mentioned seal ring 12 is fixed on the above-mentioned capsul 3, above-mentioned tubular support 11b and the periphery footpath direction 11c of portion support the rubber layer 12b of above-mentioned seal ring 12, and the above-mentioned footpath direction 11e of portion of interior week supports the base portion 12c of above-mentioned seal ring 12;
Detected disk 15 is fixed in the above-mentioned flange 151b of above-mentioned second disc 151 at above-mentioned atmospheric side, and with above-mentioned magnetic quantity transducer 4 relative configurations; And
[0006] as the measure that solves above-mentioned technical task effectively, the seal arrangement of band rotation detecting element according to the invention comprises: the Stationary side seal element, it has the installing ring on the Stationary side of being fixed on, and with this installing ring integrally formed, compare its atmospheric side end more near the sealing lip of machine inboard; The turn side seal element, be installed on the turn side and by the sealing flange of slave inner end expansion in the form of annular discs can with above-mentioned sealing lip sliding contact be adjacent to and the fluid in the machine sealed; Rotate to detect and use detected disk, have all sides of being positioned at described Stationary side seal element, embed sealing flange 151b described turn side seal element 14 and end described sealing flange 14b opposition side and expansion in the form of annular discs, and the band magnetic rubber disc 152 that is bonded in the outer side surface of sealing flange 151b, the outer periphery of this detected disk are in the radial direction relatively near the inner peripheral surface of above-mentioned Stationary side seal element.
The invention effect
[0007] according to the seal arrangement of band rotation detecting element according to the invention, to be provided with than what embed described turn side seal element and end described sealing flange opposition side with detected disk be the close atmospheric side of sealing slide part of the sealing flange of the sealing lip of Stationary side seal element and turn side seal element owing to rotate to detect, therefore, even seal arrangement is a sealed object with motor wet goods fluid, at atmospheric side, also can detect rotation by sensor.And, since by above-mentioned detected disk in the radial direction relatively near the inner peripheral surface of Stationary side seal element, and form labyrinth sealing, therefore can improve sealing to the atmospheric side foreign matter.And, because above-mentioned detected disk is positioned at all sides of above-mentioned Stationary side seal element, thereby, can prevent that seal arrangement from increasing at the axial direction installing space by this detected disk is set.
Description of drawings
[0008] Fig. 1 is by the half sectional view that dissects the preferred embodiment installment state of the seal arrangement that meets band rotation detecting element of the present invention that shows by the plane in axle center.
Fig. 2 is presented at the partial sectional view that the example of ribbon is set in the form shown in Figure 1 on first disc.
Fig. 3 is the partial view of the detected disk of Fig. 1 that the III direction is watched from Fig. 1.
Fig. 4 is the part stereogram that shows other embodiment of the seal arrangement that meets band rotation detecting element of the present invention.
Fig. 5 is by the half sectional view that dissects other embodiment's installment state of the seal arrangement that meets band rotation detecting element of the present invention that shows by the plane in axle center.
[0009] symbol description
1 seal arrangement, 11 installing rings
The 11a tubular is pressed into portion
11b tubular support 11c periphery footpath direction portion
All directly direction portions in the 11d tapered portion 11e
12 seal rings (Stationary side seal element) 12a cushion part
14 first discs (turn side seal element)
14a tubular auxiliary section 14b sealing flange
141 ribbons, 15 detected disks
151 second disc 151a tubular auxiliary sections
153 radial slot, 2 bent axles (turn side)
3 capsuls (Stationary side), 4 magnetic quantity transducers
G gap S seals slide part
Embodiment
[0010] hereinafter will be with reference to the accompanying drawings the preferred embodiment of the seal arrangement that meets band rotation detecting element of the present invention be described in detail.Fig. 1 is by dissect the half sectional view that shows sealing Unit Installation state by the plane in axle center.
[0011] at first in Fig. 1, reference character 1 expression seal arrangement of the present invention, the bent axle of reference character 2 expression engine of motor vehicle, reference character 3 expressions be installed on the engine crankshaft (not shown) and seal arrangement 1 remained in capsul on week.Bent axle 2 is equivalent to the turn side that the present invention puts down in writing, and capsul 3 is equivalent to the Stationary side that the present invention puts down in writing.
[0012] and in Fig. 1 and 2, the right side is the machine inboard, crankshaft room's side of the existing motor of engine oil of sealed object just, the left side is the atmospheric side outer space of motor just.
[0013] seal arrangement 1 comprises: be pressed into installing ring 11 on the axle hole inner peripheral surface that is engaged in capsul 3, with the integrally formed seal ring 12 of installing ring 11, be installed in dust lip 13 on the interior perimembranous of seal ring 12, be installed in first disc 14 on the outer circumferential face of seal ring 12, be installed in the detected disk 15 on first disc 14.
[0014] installing ring 11 is that metals such as steel plate are carried out punch process and the product that forms, by: be pressed into tubular on the axle hole inner peripheral surface that is engaged in capsul 3 be pressed into the 11a of portion, from this tubular be pressed into the 11a of portion to atmospheric side extend and form diameter than tubular be pressed into the little tubular support 11b of the diameter of the 11a of portion, inside all sides are extended from the atmospheric side end of tubular support 11b the periphery footpath direction 11c of portion, from the inboard tapered portion 11d that extends of interior circumferential machine of the periphery footpath direction 11c of portion, inside all sides are extended from the end of tapered portion 11d interior week directly the direction 11e of portion form.
[0015] seal ring 12 and installing ring 11 are equivalent to the Stationary side seal element of the present invention record, seal ring 12 by rubber-like elasticity material integrally formed (it is bonding to add sulphur) on installing ring 11.Seal ring 12 comprises: be arranged in the periphery of installing ring 11 tubular support 11b and form and the inner peripheral surface of maintenance and capsul 3 is fit to be connected and the cushion part 12a that is sealed and matched, from this cushion part 12a via the atmosphere side of the periphery the installing ring 11 footpath direction 11c of portion and tapered portion 11d and the rubber layer 12b that extends continuously towards the bi-side of the footpath direction 11e of portion of interior week, the base portion 12c in week in the rubber layer 12b, formation front from the interior week of this base portion 12c is front end towards the such taper of outer circumferential side and to the inboard sealing lip 12d that extends of machine.
[0016] dust lip 13 is made by the nonwovens (fiber) of synthetic resin fiber.The back side of the interior perimembranous of the base portion 12c in its peripheral part 13a and the seal ring 12 engages.
[0017] form first disc 14 by sheet metals such as steel plate are carried out punch process, it is equivalent to the turn side seal element of the present invention's record.First disc 14 comprises: with the tubular auxiliary section 14a of the outer circumferential face close fit of bent axle 2, from the sealing flange 14b of the discoid expansion of machine inner end of tubular auxiliary section 14a.Contact closely in full week of the front end of sealing lip 12d in the seal ring 12 and form and seal slide part S with sealing flange 14b inner side end in this first disc 14.The outer circumferential face of tubular auxiliary section 14a is adjacent to or relative approaching in the full week of the interior perimembranous 13b of dust lip 13 and first disc 14.
[0018] Fig. 2 is presented at the phantom that is provided with the example of ribbon 141 on first disc 14.Just under the situation on diesel engine in sealing device 1 being arranged on lorry etc. etc., on the inner side end of the sealing flange 14b of first disc 14, as shown in Figure 2 groove or the ribbon 141 formed of prominent bar have been formed.This ribbon 141 dwindles the extension of such scroll ground gradually with respect to the sense of rotation diameter of first disc 14, thereby, be accompanied by the rotation of first disc 14, generation is discharged pumping action from fluid to outer circumferential side improves the sealing among the sealing slide part S of sealing lip 12d and sealing flange 14b.
[0019] detected disk 15 is made of second disc 151 and band magnetic rubber disc 152, and being provided with than Stationary side seal element is the i.e. more close atmospheric side of sealing sliding contacting part S of the sealing flange 14b of first disc 14 of the sealing lip 12d of seal ring 12 and turn side seal element.By being carried out punch process, magnetic sheet metals such as steel plate make second disc 151.The flange 151b that second disc 151 has the tubular auxiliary section 151a that is pressed on the outer circumferential face that is engaged in tubular auxiliary section 14a in first disc 14, launches from the end disc shape of tubular auxiliary section 151a.
[0020] outer periphery of second disc 151 in the detected disk 15 by micro-gap G in the radial direction near the inner peripheral surface that covers the rubber layer 12b on the interior week of tapered portion 11d in the installing ring 11.And band magnetic rubber disc 152 is that the rubber-like elasticity material forming that will evenly mix the micropowder of strong magnetism body metals such as ferrite is discoid, and one is bonded on the outer side surface (atmosphere side) of the flange 151b in second disc 151.
[0021] Fig. 3 is the view that the III direction is watched detected disk 15 parts from Fig. 1, the different magnetic poles (the S utmost point and the N utmost point) that has just along the circumferential direction alternately formed on the band magnetic rubber disc 152 in detected disk 15.
[0022] will be arranged on the atmospheric side of seal arrangement 1 by the magnetic quantity transducer 4 that magnetoresistive element is formed, and be fixed on capsul 3 sides.The detection faces of this magnetic quantity transducer 4 is in the axial direction near the band magnetic rubber disc 152 in detected disk 15.
[0023] in said structure, seal arrangement 1 is under installment state shown in Figure 1, because the cushion part 12a of seal ring 12 keeps being fit to connect the ground close fit on the inner peripheral surface of capsul 3, simultaneously, the sealing flange 14b of the sealing lip 12d of seal ring 12 and first disc 14 forms and is adjacent to slide part S, and the engine oil of blocking machine inboard leaks to atmospheric side.Owing to have by centrifugal force and will throw away effect to outer circumferential side is centrifugal with sealing flange 14b fluid in contact with first disc 14 of bent axle 2 unitary rotation, therefore, for want by be adjacent to slide part S lead in the engine oil of all sides, realize good sealing function.
[0024] and, because by detected disk 15 and bent axle 2 unitary rotation, make alternately the place ahead of the detection faces by magnetic quantity transducer 4 of the band magnetic rubber disc 152 band magnetic of detected disk 15 and different magnetic pole (the S utmost point and the N utmost point), thus magnetic quantity transducer 4 corresponding to crosscut its flux change and produce pulse signal.Just detected disk 15 constitutes the magnetic-type rotary encoder with magnetic quantity transducer 4.Because proportional from the rotation number of the frequency of the pulse signal of magnetic quantity transducer 4 output and bent axle 2, thereby, according to described pulse train, can detect the rotational velocity and the rotational angle of bent axle 2, and supply to various controls.And by band magnetic pattern different piece (towards the different part of radially band magnetic length or band magnetic pitch etc.) is set on 1 position of circumferencial direction, the rotational angle that also can be provided for detecting such as the special positions such as upper dead center of piston detects initial point.
[0025] and according to this structure, be provided with than the more close atmospheric side of sealing slide part S of the sealing flange 14b of the sealing lip 12d of seal ring 12 and first disc 14 owing to rotate to detect with detected disk 15, thereby seal arrangement 1 to be not limited to the engine oil be the seal arrangement of sealed object, also can rotate detection by magnetic quantity transducer 4 at the atmospheric side that does not contact engine oil.
[0026] on the other hand, be arranged on dust lip 13 on the interior week of base portion 12c in the seal ring 12 and prevent that the foreign matter of atmospheric side from invading the machine inboard.And, the flange 151b of second disc 151 in the detected disk 15 and band magnetic rubber disc 152 make the centrifugal effect that throws away of the object that is in contact with it except having by centrifugal force, because the outer periphery of above-mentioned flange 151b diametrically near the rubber layer 12b on the interior week that covers tapered portion 11d in the installing ring 11, thereby have the labyrinth sealing effect by micro-gap G.Thereby can prevent more effectively that foreign matter from invading from atmospheric side.
[0027] seal arrangement shown in Figure 11 utilizes all sides space of guaranteeing within it by the 11c of peripheral direction portion, tapered portion 11d in the installing ring 11 and interior all radial part 11e, and the detected disk 15 in the magnetic-type rotary encoder (second disc 151) is arranged on the tubular auxiliary section 14a of first disc 14 on the end of atmospheric side.Thereby, by being provided with detected disk 15, do not increase seal arrangement 1 axial installing space, and as mentioned above,, therefore can improve sealability because detected disk 15 (second disc 151) self has the function that the foreign matter of atmospheric side is got rid of.
[0028] and, detected disk 15 is in axially locating, makes towards the end face of its atmospheric side and to cover the end face of the rubber layer 12b on the 11c of peripheral direction portion of installing ring 11 in the same plane mutually.Thereby the range error between magnetic quantity transducer 4 and the detected disk 15 diminishes, and can carry out correct rotation and detect.
[0029] and, because the sealing flange 14b of incorporate first disc 14 and the flange 151b of second disc 151 are present on the axial both sides of bent axle 2 mutually by being pressed into cooperation, thereby, under the state that is not installed on bent axle 2 and the capsul 3, can assemble first disc 14 and second disc 151 and installing ring 11, seal ring 12 and dust lip 13 temporarily, thereby can take care of easily and operate.And in case so, because it is slide part and the dust lip 13 of the sealing lip 12d of seal ring 12 are protected, therefore very suitable.
[0030] in addition, on the rubber layer 12b that the 11c of peripheral direction portion the installing ring 11 is covered from atmospheric side, formed kick 12e with keeping predetermined distance in a circumferential direction, thereby, during sealing device 1 being taken care of etc., axially being above-below direction when overlapping, rubber layer 12b does not contact with the whole surface of sealing flange 14b of overlapping first disc 14 of side (or downside) from it, therefore, can prevent effectively by long-time overlapping and cause bonding.
[0031] and in the above-described embodiments, detected disk 15 is that discoid band magnetic rubber disc 152 is wholely set product on the flange 151b of second disc 151, but this band magnetic rubber disc 152 need not continuous distributed in a circumferential direction.As other embodiment, Fig. 4 shows to make band magnetic rubber disc 152 be interrupted the part stereogram of the example that distributes at circumferencial direction.
[0032] just in Fig. 4, radially a plurality of band magnetic rubber disc 152 of Yan Shening are bonded in equally spacedly at circumferencial direction on the flange 151b of second disc 151, have formed each radial slot 153 between each band magnetic rubber disc 152.Described each band magnetic rubber disc 152 also is to be made by the even rubber-like elasticity material that has mixed the micropowder of strong magnetism body metals such as ferrite, is band magnetic product, can be shaped that to add sulphur bonding and attached on second disc 151 by once adding sulphur.
[0033] and according to this embodiment, except the effect identical with Fig. 1 and Fig. 3, when detected disk 15 and bent axle 2 unitary rotation, the remarkable centrifugal pump effect by the radial slot 153 between each band magnetic rubber disc 152 causes can stop dust lip 13 sides of foreign matter in Fig. 1 to be invaded.Thereby, can obtain the effect of better sealing dust.And, by from interior all side direction outer circumferential side flow air stream, realize radial slot 153 is carried out the air cooling effect, can remove the heating of sliding in dust lip 13 grades effectively.
[0034] Fig. 5 is by the half sectional view that dissects other embodiment's installment state of the seal arrangement that meets band rotation detecting element of the present invention that shows by the plane in axle center.In this embodiment, basic structure is identical with Fig. 1, but following structure is different with structure shown in Figure 1, promptly on the end of the atmospheric side of the tubular auxiliary section of first disc 14 14a, have the big footpath hole enlargement tube 14c of portion of the wall thickness that has formed the tubular auxiliary section 151a that is equivalent to second disc 151, the tubular auxiliary section 151a of above-mentioned second disc 151 is pressed on the inner peripheral surface that is engaged in this hole enlargement tube 14c of portion.
[0035] according to this embodiment, except the acquisition effect identical with Fig. 1 and 3, because the radial width of flange 151b can inside all side expansions than the radial width of flange 151b in second disc 151 among Fig. 1 be equivalent to the wall thickness of the tubular auxiliary section 14a of first disc 14 in second disc 151, thereby, can increase the area of the band magnetic rubber disc 152 bonding with it.Thereby the detected area of band magnetic rubber disc 152 (the band magnetic surface is long-pending to become big) can improve testing precision.And, if the inner peripheral surface of the tubular auxiliary section 151a of second disc 151 contacts closely with the outer circumferential face of bent axle 2, can improve its installation precision (concentricity).
[0036] and, even the engine oil of machine inboard is invaded in the sealing slide part S of sealing flange 14b of the sealing lip 12d of seal ring 12 and first disc 14 a little, even if the engine oil of machine inboard is invaded on a small quantity, owing on the outer circumferential face of the tubular auxiliary section of first disc 14 14a, there is the fitting surface with second disc 151, thereby has engine oil and be difficult to the advantage of leaking to atmospheric side from it.
Utilize possibility on the industry
[0037] according to the present invention, even in the field take engine wet goods fluid as sealed object Close down, also it can be utilized as the sealing device that band can detect the rotation detecting element of rotation.
Claims (6)
1. seal arrangement with rotation detecting element, bent axle (2) is supported on the cylinder block of motor free to rotately, capsul (3) is fixed in above-mentioned cylinder block, seal arrangement (1) is arranged at above-mentioned capsul (3), boundary space to engine crankshaft chamber side and outside atmosphere side seals, and magnetic quantity transducer (4) is arranged on the above-mentioned cylinder block at above-mentioned atmospheric side, thereby detects the rotary state of above-mentioned bent axle (2), it is characterized in that, comprising:
Seal ring (12), it is fixed on the capsul (3), and comprises cushion part (12a), rubber layer (12b), base portion (12c), sealing lip (12d); Above-mentioned cushion part (12a) is fixed on the above-mentioned capsul (3), above-mentioned base portion (12c) extends towards above-mentioned bent axle (2) via above-mentioned rubber layer (12b) from above-mentioned cushion part (12a), above-mentioned sealing lip (12d) from above-mentioned base portion (12c) towards above-mentioned capsul (3) at above-mentioned crankshaft room lateral buckling;
Installing ring (11), it is fixed on the capsul (3), and comprises that tubular is pressed into portion (11a), tubular support (11b), periphery footpath direction portion (11c), interior all directly direction portions (11e); Above-mentioned tubular is pressed into portion (11a) cushion part (12a) of above-mentioned seal ring (12) is fixed on the above-mentioned capsul (3), above-mentioned tubular support (11b) and periphery footpath direction portion (11c) support the rubber layer (12b) of above-mentioned seal ring (12), and above-mentioned interior week footpath direction portion (11e) supports the base portion (12c) of above-mentioned seal ring (12);
First disc (14), it is fixed on the bent axle (2), and comprise tubular auxiliary section (14a) and sealing flange (14b), above-mentioned tubular auxiliary section (14a) is fixed on the bent axle (2), above-mentioned sealing flange (14b) from above-mentioned tubular auxiliary section (14a) towards above-mentioned capsul (3) at above-mentioned crankshaft room lateral buckling; And the front end of the sealing lip (12d) of above-mentioned seal ring (12) contacts with sealing flange (14b) and forms sealing slide part (S);
Second disc (151), it is fixed on first disc (14) at above-mentioned atmospheric side, and comprise tubular auxiliary section (151a) and flange (151b), above-mentioned tubular auxiliary section (151a) is fixed on the above-mentioned tubular auxiliary section (14a) of above-mentioned first disc (14), and above-mentioned flange (151b) bends from above-mentioned tubular auxiliary section (151a) towards above-mentioned capsul (3) at above-mentioned atmospheric side; And the inner peripheral surface of the base portion (12c) of above-mentioned seal ring (12) is close and relative on the radial direction of above-mentioned bent axle (2) with the outer circumferential face of the above-mentioned tubular auxiliary section (151a) of above-mentioned second disc (151);
Detected disk (15) is fixed in the above-mentioned flange (151b) of above-mentioned second disc (151) and relative configuration with above-mentioned magnetic quantity transducer (4) at above-mentioned atmospheric side; And
Dust lip (13), it is fixed in the base portion (12c) of above-mentioned seal ring (12) at above-mentioned atmospheric side, the outer circumferential face of the inner peripheral surface of this dust lip (13) and the above-mentioned tubular auxiliary section (151a) of above-mentioned second disc (151) on the radial direction of above-mentioned bent axle (2) near and relative.
2. the seal arrangement of band rotation detecting element according to claim 1 is characterized in that, on the face of above-mentioned sealing slide part (S) side of the above-mentioned sealing flange (14b) of above-mentioned first disc (14), is provided with spiral helicine ribbon (141).
3. the seal arrangement of band rotation detecting element according to claim 1, it is characterized in that the above-mentioned atmospheric side between the outer circumferential face of the above-mentioned flange (151b) of the inner peripheral surface of the above-mentioned rubber layer (12b) of above-mentioned seal ring (12) and above-mentioned second disc (151) is provided with gap (G).
4. the seal arrangement of band rotation detecting element according to claim 1, it is characterized in that, above-mentioned atmospheric side in the above-mentioned tubular auxiliary section (14a) of above-mentioned first disc (14) is provided with hole enlargement tube portion (14c), and the above-mentioned tubular auxiliary section (151a) of above-mentioned second disc (151) is pressed between the outer circumferential face of the inner peripheral surface of above-mentioned hole enlargement tube portion (14c) and above-mentioned bent axle (2).
5. the seal arrangement of band rotation detecting element according to claim 1 is characterized in that, above-mentioned detected disk (15) is made of second disc (151) and band magnetic rubber disc (152).
6. the seal arrangement of band rotation detecting element according to claim 5 is characterized in that, a plurality of radial slot (153) are set on above-mentioned band magnetic rubber disc (152).
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP084203/2004 | 2004-03-23 | ||
| JP2004084203 | 2004-03-23 | ||
| JP281181/2004 | 2004-09-28 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1934379A CN1934379A (en) | 2007-03-21 |
| CN100449183C true CN100449183C (en) | 2009-01-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005800090897A Expired - Fee Related CN100449183C (en) | 2004-03-23 | 2005-03-22 | Sealing device with rotation detecting element |
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| CN (1) | CN100449183C (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8579297B2 (en) * | 2010-09-11 | 2013-11-12 | Eagle Industry Co., Ltd. | Shaft seal device |
| CN103542096B (en) * | 2012-07-10 | 2017-02-22 | 浙江万向精工有限公司 | Integrated oil seal with three-sealing function, pre-pushing function and magnetic sealing sensing function |
| US9638324B2 (en) | 2012-07-30 | 2017-05-02 | Nok Corporation | Sealing device |
| JP5964201B2 (en) | 2012-10-23 | 2016-08-03 | Nok株式会社 | Oil seal |
| CN107687516A (en) * | 2014-06-10 | 2018-02-13 | Nok株式会社 | Sealing device |
| GB2529807A (en) * | 2014-08-26 | 2016-03-09 | Skf Ab | Dynamic radial seal |
| JPWO2017090583A1 (en) * | 2015-11-24 | 2018-08-16 | Nok株式会社 | Sealing device |
| EP3447345B1 (en) * | 2016-04-27 | 2021-10-27 | Nok Corporation | Sealing structure using damper and oil seal |
| EP3546806B1 (en) * | 2016-11-25 | 2023-03-15 | NOK Corporation | Sealing device |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5969518A (en) * | 1996-10-28 | 1999-10-19 | Fag Automobiltechnik Ag | Antifriction mounting having a rotational-speed measuring device protected from contamination |
| CN1071007C (en) * | 1993-01-19 | 2001-09-12 | Snr轴承公司 | A seal assembly device with a built-in coder |
| JP2001289254A (en) * | 2000-02-01 | 2001-10-19 | Ntn Corp | Bearing for axle |
| JP2002048247A (en) * | 2000-08-01 | 2002-02-15 | Nok Corp | Sealing device enabling detection of rotation |
| JP2003028309A (en) * | 2001-07-18 | 2003-01-29 | Uchiyama Mfg Corp | Sealing device with encoder |
| JP2003166852A (en) * | 2001-11-29 | 2003-06-13 | Nok Corp | Magnetic encoder |
| JP2003287142A (en) * | 2002-03-29 | 2003-10-10 | Nok Corp | Sealing device |
-
2005
- 2005-03-22 CN CNB2005800090897A patent/CN100449183C/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1071007C (en) * | 1993-01-19 | 2001-09-12 | Snr轴承公司 | A seal assembly device with a built-in coder |
| US5969518A (en) * | 1996-10-28 | 1999-10-19 | Fag Automobiltechnik Ag | Antifriction mounting having a rotational-speed measuring device protected from contamination |
| JP2001289254A (en) * | 2000-02-01 | 2001-10-19 | Ntn Corp | Bearing for axle |
| JP2002048247A (en) * | 2000-08-01 | 2002-02-15 | Nok Corp | Sealing device enabling detection of rotation |
| JP2003028309A (en) * | 2001-07-18 | 2003-01-29 | Uchiyama Mfg Corp | Sealing device with encoder |
| JP2003166852A (en) * | 2001-11-29 | 2003-06-13 | Nok Corp | Magnetic encoder |
| JP2003287142A (en) * | 2002-03-29 | 2003-10-10 | Nok Corp | Sealing device |
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| Publication number | Publication date |
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| CN1934379A (en) | 2007-03-21 |
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Granted publication date: 20090107 |