CN202659721U - Rolling bearing device with gasket - Google Patents
Rolling bearing device with gasket Download PDFInfo
- Publication number
- CN202659721U CN202659721U CN2012203368539U CN201220336853U CN202659721U CN 202659721 U CN202659721 U CN 202659721U CN 2012203368539 U CN2012203368539 U CN 2012203368539U CN 201220336853 U CN201220336853 U CN 201220336853U CN 202659721 U CN202659721 U CN 202659721U
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- China
- Prior art keywords
- seal ring
- sealing lip
- ring
- rolling bearing
- face
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/72—Sealings
- F16C33/76—Sealings of ball or roller bearings
- F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
- F16C33/7869—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted with a cylindrical portion to the inner surface of the outer race and having a radial portion extending inward
- F16C33/7879—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted with a cylindrical portion to the inner surface of the outer race and having a radial portion extending inward with a further sealing ring
- F16C33/7883—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted with a cylindrical portion to the inner surface of the outer race and having a radial portion extending inward with a further sealing ring mounted to the inner race and of generally L-shape, the two sealing rings defining a sealing with box-shaped cross-section
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
- F16C19/14—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load
- F16C19/18—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls
- F16C19/181—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls with angular contact
- F16C19/183—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls with angular contact with two rows at opposite angles
- F16C19/184—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls with angular contact with two rows at opposite angles in O-arrangement
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rolling Contact Bearings (AREA)
- Sealing With Elastic Sealing Lips (AREA)
- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
- Sealing Of Bearings (AREA)
Abstract
The utility model discloses a structure of a rolling bearing device with a gasket. By the aid of the device, the base oil of grease, which is isolated from a thickening agent, cannot leak to the outside from a combined gasket (9b) under the condition that a middle core rod is arranged upwards or downwards. An oil storage sealing lip (25) which protrudes towards the side of the inner space with a rolling body is arranged on part of a sealing part (13a) which forms the combined gasket (9b), and a storage space (29) is formed on the outer diameter side of the oil storage sealing lip (25). Besides, the axial protruding amount of the oil storage sealing lip (25) is limited to the amount, that is, when the middle core rod of a rolling bearing unit (1a) is arranged upwards or downwards, the base oil is prevented from leaking from the storage space (29) under the action that base oil isolated from the thickening agent moves towards the storage space (29).
Description
Technical field
The utility model relates to the rolling bearing system with seal ring for the rotary component of the various mechanical devices such as main shaft of the wheel of free rotary ground supporting automobile, lathe.
Background technique
The rolling bearing system that is made of rolling bearings such as ball bearing, roller bearing, tapered roller bearings has been installed by swivel bearing section at various mechanical devices.In such rolling bearing system, be provided with seal ring at its open end, prevent from being enclosed inner lubricating grease and leak to the outside, and prevent from being present in the various foreign matters such as outside water, dust and enter inside.Among Figure 11, as the example with the rolling bearing system of seal ring of having assembled such seal ring, show the roller bearing unit that is called as the first generation (multiple row roller bearing unit) 1 in the roller bearing unit of using with respect to the automobile of the wheel of draft hitch free rotary ground supporting automobile.
Roller bearing unit 1 has: 1 outer shroud 2 that suitable parts with outer shroud are suitable; Encircle 3a, 3b in a suitable couple of suitable parts with interior ring; A plurality of balls 4 suitable with rolling element respectively.Be formed with the outer loop orbit 5 of the multiple row of corner connection touch at the inner peripheral surface of outer shroud 2.In addition, in each, encircle the interior loop orbit 6 that is formed with the corner connection touch on the outer circumferential face of 3a, 3b.Each ball 4 is loaded between outer loop orbit 5 and the interior loop orbit 6 by row under the state that is held the maintenance of device 7 Free-rolling ground.Under the state of vehicle assembling, outer shroud 2 under the state that has stoped circumferencial direction and axial displacement by the embedded knuckle that is fixed on not shown formation draft hitch on.On the other hand, interior ring 3a, 3b are fixed on the not shown wheel hub that has for the mounting flange of supporting wheel by outer build-in.
In addition, the both ends open section that is provided with the inner space 8 of ball 4 seal ring 9 that is combined respectively stops up.These combined seal rings 9 are made of seal ring 10 and oil thrower 11.Seal ring 10 forms in the following way, that is, will be sticked on the arbor 12 by the sealed member 13 that elastomer etc. consists of, and described arbor 12 forms roughly L font and whole for circular of cross section by the sheet metals such as steel plate being implemented punch process.Arbor 12 has: by interference fit by the stationary cylinder section 14 on the embedded axial end portion inner peripheral surface that is fixed on outer shroud 2; From the axial ora terminalis of this stationary cylinder section 14 clamping rings section 15 towards the outer circumferential face of interior ring 3a, 3b lateral buckling in the diametric(al).In addition, sealed member 13 has each base end part and connects and be bearing in 3 sealing lips 16～18 on arbor 12 all-round.
In addition, oil thrower 11 forms roughly L font and whole circular of cross section by the sheet metals such as steel plate, corrosion resistant plate being implemented punch process, has: rotor section 19, and it fixes on the axial end portion outer circumferential face of interior ring 3a, 3b with the outer build-in of interference fit; Rotational circle ring portion 20, its axial ora terminalis from this rotor section 19 are encircled outward 2 inner peripheral surface and are bent along diametric(al).And, in the sealing lip 16～18, that be called as lateral lip, outermost footpath side, spread all over all-roundly axial sides sliding contact with rotational circle ring portion 20 with the front-end edge of the outside sealing lip 16 of outstanding vertically state setting.Relative with it, the front-end edge separately that is called as footpath remaining 2 intermediate seal lips 17 of labiad and inner seal lip 18 spreads all over all-roundly the outer circumferential face sliding contact with rotor section 19.
In addition, lubricating grease 21 enclosed be provided with in the inner space 8 of ball 4, realize the lubricating of rolling contact section of the rolling surface of these balls 4 and outer loop orbit 5 separately, interior loop orbit 6.By combined seal ring 9, prevent that the lubricating grease 21 in the inner space 8 from invading in the inner space 8 to the leakage of outside and from the various foreign matters of outside.
As the lubricating grease 21 in the inner space 8 of being enclosed roller bearing unit 1, using viscosity number is that the situation of the low urea-base grease of viscosity about No. 2 increases day by day.Its reason is in order to prevent following situation, namely, when the conveying of the monomer (single product) of roller bearing unit 1, when being assembled into the conveying under the state on the vehicle body etc., because of outer shroud 2 and interior ring 3a, 3b not with the relative rotation vibration-generating make ball 4, outer loop orbit 5 or 6 wearing and tearing of interior loop orbit, be called as thus the depression of the similar carburizing impression that contact segment false brinelling (false brinelling), between rolling surface and the plane of trajectory orbital produces in these plane of trajectory orbital.Namely, viscosity number is that the urea-base grease about No. 2 is isolated base oil from the water-thickening agent that is made of the carbamic acid lipoid substance easily, therefore this isolated aqueous base oil forms oil film in plane of trajectory orbital and rolling surface, effectively prevents the generation of false brinelling.
In addition, viscosity number is the base oil that urea-base grease about No. 2 comprises 80～90 quality % of all-mass usually.Thus, there is the possibility of isolating the base oil more than the requirement that prevents the false brinelling generation from water-thickening agent in the temperature variation (temperature rising) the when vibration during owing to conveying, keeping etc.And, carrying, in the situation that keeping is many, making roller bearing unit 1 become wherein arbor O towards the state (left and right side of Figure 11 is towards the state of above-below direction) of above-below direction.Therefore, flow towards the below from the isolated aqueous base oil of water-thickening agent, concentrate on the back side (inner space 8 sides) of the combined seal ring 9 that is positioned at the below in a pair of combined seal ring 9.
But, in the past in the situation of combined seal ring 9 of structure, owing to do not design consciously the structure that so aqueous base oil spills to the outside, so base oil may spill to space outerpace by combined seal ring 9.Namely, in the situation that adopts combined seal ring 9, because the front-end edge of sealing lip 16～18 and opposing side keep certain interference margin ground difference butt, so, although obtained the certain effect that prevents that base oil from spilling to space outerpace, but because the contact conditions such as vibration change, so, the base oil that flows down because of action of gravitation can not be blocked fully downwards.Therefore, in the situation of the combined seal ring 9 of in the past constructing, there is the possibility that escapes in large quantities space outerpace from the isolated base oil of water-thickening agent.And, in this situation, not only can pollute surrounding enviroment, remain in the quantity not sufficient that contains of base oil in the lubricating grease of inner space 8, insufficient lubrication may occur in rolling contact section.Especially, in the situation of first generation roller bearing unit shown in Figure 11 and second generation roller bearing unit, in one pair ring each other by outer build-in fixed (subassembly) under the state before the wheel hub, a little relative displacement.Therefore, the interference margin of the sealing lip under this state is unstable, and the leakage of base oil occurs easily.
In addition, as correlation technique, TOHKEMY 2001-141069 communique discloses the structure that is provided with the circular projection side-prominent towards the inner space that is provided with rolling element in the part of the sealed member that consists of seal ring.But, this projection is in the situation of stacked combined seal ring with encoder, the detected face that also can prevent encoder occurs because contacting with metal arbor that damage arranges, does not have fully this projection for the intention from the leakproof of the isolated base oil of water-thickening agent.
[prior art document]
[patent documentation 1] TOHKEMY 2001-141069 communique
The model utility content
The utility model In view of the foregoing, its objective is the structure of realizing a kind of rolling bearing system with seal ring, this is configured in middle arbor in the situation of above-below direction configuration, can prevent from being enclosed leaking to space outerpace by seal ring from the isolated base oil of water-thickening agent in the base oil in the lubricating grease in the space that is provided with rolling element.
Rolling bearing system with seal ring of the present utility model has the suitable parts of outer shroud, the suitable parts of interior ring, a plurality of rolling element, seal ring and lubricating grease.
The suitable parts of described outer shroud have outer loop orbit at inner peripheral surface.The suitable parts of described interior ring have interior loop orbit at outer circumferential face.Be arranged between these outer loop orbits and the interior loop orbit described a plurality of rolling element Free-rollings.In addition, described seal ring has the sealed member of the elastic material system that has at least 1 sealing lip and the arbor of supporting sealing parts.When the sealing circle is supported the use that is fixed in the suitable parts of described outer shroud and the suitable parts of described interior ring on the side face of non-rotary static part.In addition, the rotary component that rotates during the use in the suitable parts with described outer shroud of the front-end edge of described sealing lip and the suitable parts of described interior ring or the surface sliding that is fixed on the parts on this rotary component contact.By such structure, the sealing circle stops up the open-ended of the space be provided with described rolling element.And described lubricating grease is provided with in the space of described rolling element by inclosure.
Especially, in the rolling bearing system with seal ring of the present utility model, on described sealed member, also be provided with vertically towards the outstanding store oil sealing lip of the space side that is provided with described rolling element (with the width direction center side of the rolling bearing system of seal ring).In addition, the part of this store oil sealing lip spreads all over all-roundly with the surface of described rotary component (parts that rotate during use in the suitable parts with interior ring of the suitable parts of outer shroud) and approaches and relative or sliding contact.
And, relative side face, the side face of this static part and the side of the space side that is provided with described rolling element that is present in these side faces part each other in the described seal ring of the side face with described static part when use (in the suitable parts with interior ring of the suitable parts of outer shroud non-rotary parts) by in the side face of described store oil sealing lip forms roughly circular storage space.
And, described store oil sealing lip is constrained to following size to axial overhang, namely, dispose towards above-below direction by the middle arbor with described rolling bearing system with seal ring, even the base oil that goes out from water-thickening agent separation (oil separates) in the base oil in described lubricating grease moves in the situation of (flowing down), can prevent that also this base oil from overflowing from this storage space in described storage space.
The utility model preferably adopts and used viscosity as described lubricating grease is the rolling bearing system with seal ring of No. 2 lubricating grease.
Preferably between the front-end edge of the described store oil sealing lip face relative with the front-end edge with this store oil sealing lip in the described rotary component, form labyrinth seal structure.
Preferably, in the situation of static part (outer shroud) at the suitable parts of described outer shroud, the axial end portion inner peripheral surface of the suitable parts of this outer shroud is facial and more consist of near the larger inclination face of outer shroud race way diameter size from this cylinder face at whole cylinder constant on axially by diameter dimension, and it is facial described seal ring to be fixed on this cylinder with interference fit.
Instead, in the situation of static part (outer shroud) at the suitable parts of described outer shroud, the axial end portion inner peripheral surface of the suitable parts of this outer shroud by diameter dimension whole axially on the constant facial and large footpath of cylinder cylinder face consist of, it is facial described seal ring to be fixed on this cylinder with interference fit, described large footpath cylinder face is arranged on and compares more outer loop orbit side with this cylinder face, internal diameter size is facial larger than this cylinder, and diameter dimension is whole constant on axially.
Preferably, in the situation of rotary component (wheel hub or interior ring) at the suitable parts of described interior ring, the outside diameter part of the shoulder that in this, encircles, spread all over and be provided with vertically towards the ring-type teat of the side-prominent cross section general triangular of described seal ring all-roundly, the front end of described store oil sealing lip can be configured in the internal side diameter of this ring-type teat.
Instead, in the situation of rotary component (wheel hub or interior ring) at the suitable parts of described interior ring, the radially intermediate portion of the ladder surface of the shoulder that in this, encircles, spread all over and be provided with vertically recessed annular recessed portion all-roundly, the front end of described store oil sealing lip can also be inserted and be configured in this annular recessed portion.
As other substitute mode, for example, the radial seal lip that consists of described sealing lip is that the inner seal lip is roughly V font of cross section, the outside diameter rake that they are mutual different with true dip direction and the radially ora terminalis of internal side diameter rake link mutually by curved part each other, global shape forms circular, can also make this curved part as described store oil sealing lip performance function.
Perhaps, the radial seal lip that consists of described sealing lip is that the global shape of inner seal lip is part circular cone tubular, side-prominent towards the inner space vertically, and its front end edge side face spreads all over all-roundly the side face butt with the shoulder of the side face of rotary component or this rotary component, can also be with this inner seal lip as described store oil sealing lip performance function.
In addition, the part that also can the part from being fixed with described seal ring in the axial end portion side face of described static part breaks away from vertically, spread all over and form radially recessed annular recess all-roundly, make the clamping rings section of the formation arbor of described seal ring become roughly crank-like of cross section, side by the inner space side that is present in these side faces part each other in the bottom surface of the side face of described store oil sealing lip, described annular recess and the described clamping rings section forms roughly circular storage space.
In this situation, in the situation on the side face that is formed at the suitable parts of described outer shroud, make described annular recess continuously to outer loop orbit, perhaps, in the situation of the side face that is formed at the suitable parts of described interior ring, make described annular recess continuously to interior loop orbit.
The effect of model utility
According to the rolling bearing system with seal ring of the present utility model, number be in the mode of urea-base grease of No. 2 (base oil content is 80～90%) having used viscosity, even with the middle arbor of the rolling bearing system of seal ring in the situation of above-below direction configuration, also can prevent from being enclosed leaking to space outerpace by seal ring from the isolated base oil of water-thickening agent in the base oil in the lubricating grease in the space that is provided with rolling element.
Namely, in the situation of the present utility model, by with the side face of the relative side face of the side face with static part in the side face of the morphogenetic store oil sealing lip of the side-prominent shape in the space that is provided with rolling element, this static part, the side of the space side that is provided with described rolling element that is present in these side faces part each other in the seal ring, be formed for storing from the storage space of the isolated aqueous base oil of water-thickening agent.In this storage space, for example, the part that does not exist the such contact condition of the abutting part of the front-end edge of sealing lip and opposing side to change because of vibration etc., thus effectively stop base oil to spill from described storage space.
And, in the situation of the present utility model, in the situation of above-below direction configuration, the overhang to axial of the described store oil sealing lip suitable with the depth dimensions of described storage space is constrained to the size that can prevent that mobile aqueous base oil overflows from this storage space in this storage space at the middle arbor of described rolling bearing system with seal ring.Therefore, even will be with the middle arbor of the rolling bearing system of seal ring in the situation of above-below direction configuration, also can effectively prevent from spilling from the isolated base oil of water-thickening agent from described storage space and overflowing, can effectively this base oil be remained in this storage space.
And in situation of the present utility model, the part of described store oil sealing lip spreads all over all-roundly and relative or sliding contact approaching with the surface of described rotary component.Therefore, even in the situation that the base oil of the trace vibration when carrying etc. is overflowed from described storage space, also can hinder this base oil by the part between described store oil sealing lip and the described rotary component.
Its result according to the rolling bearing system with seal ring of the present utility model, can prevent from leaking to space outerpace by seal ring from the isolated base oil of water-thickening agent effectively.Thus, can realize preventing the pollution of surrounding enviroment, can also effectively prevent in the lubricating grease base oil contain the insufficient lubrication that quantity not sufficient causes rolling contact section.And, can prevent chronically the generation of false brinelling.
Description of drawings
Fig. 1 is the partly sectional view of part of the first case of expression mode of execution of the present utility model.
Fig. 2 is the enlarged view of the A part of Fig. 1.
Fig. 3 is the figure same with Fig. 2 of the second case of expression mode of execution of the present utility model.
Fig. 4 is the figure same with Fig. 2 of the 3rd example of expression mode of execution of the present utility model.
Fig. 5 is the figure same with Fig. 2 of the 4th example of expression mode of execution of the present utility model.
Fig. 6 is the figure same with Fig. 2 of the 5th example of expression mode of execution of the present utility model.
Fig. 7 is the figure same with Fig. 2 of the 6th example of expression mode of execution of the present utility model.
Fig. 8 is the figure same with Fig. 2 of the 7th example of expression mode of execution of the present utility model.
Fig. 9 is the figure same with Fig. 2 of the 8th example of expression mode of execution of the present utility model.
Figure 10 is the figure same with Fig. 2 of the 9th example of expression mode of execution of the present utility model.
Figure 11 is the sectional view with half part of the rolling bearing system of seal ring that represents in the past to construct.
The explanation of reference character
1,1a roller bearing unit
2,2a～2e outer shroud
Ring in 3a～3h
4 balls
5 outer loop orbits
6 interior loop orbits
7 retainers
8 inner spaces
9,9a, 9b combined seal ring
10,10a seal ring
11 oil throwers
12,12a arbor
13,13a sealed member
14,14a stationary cylinder section
15,15a clamping rings section
16 outside sealing lips
17 intermediate seal lips
18,18a ~ 18c inner seal lip
19 rotor sections
20 rotational circle ring portions
21 lubricating grease
22 encoders
23 large footpath stepped part
24,24a path stepped part
25 store oil sealing lips
26,26a, 26b shoulder
27,27a ladder surface
28,28a labyrinth seal structure
29,29a 29h storage space
30 inclinations are facial
31 cylinders are facial
32 bights
33 end faces
34 chamfered section
35 large footpath cylinders are facial
36 ring-type teats
37 annular recessed portion
38 outside diameter rakes
39 internal side diameter rakes
40 curved parts
41 outside diameter annulus sections
42 internal side diameter annulus sections
43 rakes
44,44a annular recess
Embodiment
［ first case of mode of execution ］
Fig. 1 and Fig. 2 show the first case of mode of execution of the present utility model.This routine roller bearing unit 1a be with structure in the past similarly rotate freely with the roller bearing unit that be called as the first generation of wheel support on draft hitch of automobile, have and encircle 3c, 3d, a plurality of balls 4 suitable with rolling element respectively in a suitable couple of 1 suitable outer shroud 2a of suitable parts with outer shroud, suitable parts with interior ring.
Be formed with the outer loop orbit 5 of the multiple row of corner connection touch at the inner peripheral surface of outer shroud 2a.On the other hand, be formed with the interior loop orbit 6 of corner connection touch at the outer circumferential face separately of interior ring 3c, 3d.A plurality of balls 4 are loaded into by row under by the maintained state in retainer 7 Free-rolling ground respectively outside the multiple row in the loop orbit 5 and multiple row between the loop orbit 6.Outer shroud 2a under the state of vehicle assembling with the state that stops circumferencial direction and axial displacement by the embedded knuckle that is fixed on not shown formation draft hitch on.On the other hand, interior ring 3c, 3d fixed on the axial intermediate portion that has for the not shown wheel hub of the mounting flange of supporting wheel by outer build-in.Therefore, in this routine situation, also non-rotary static part when outer shroud 2a is equivalent to use, the rotary component of interior ring 3c, rotation when 3d is equivalent to use.In addition, in illustrated example, used ball 4 as rolling element, but in the situation of the roller bearing unit that the automobile of high weight is used, the situation of using tapered roller has been arranged also as rolling element.
In addition, the part between the outer circumferential face of the inner peripheral surface of outer shroud 2a and interior ring 3c, 3d is in the inner space 8 interior inclosures that are provided with ball 4 and be filled with lubricating grease 21.Thus, realize rolling contact section lubricated between the rolling surface of these balls 4 and each outer loop orbit 5, the interior loop orbit 6.In this routine situation, having used viscosity as lubricating grease 21 number is the urea-base grease of (base oil content is 80～90%) about No. 2.Lubricating grease 21 similarly is made of base oil, water-thickening agent and additive with known lubricating grease in the past.Mineral oil or the synthetic wet goods artificial oil of lipid artificial oil, ethers artificial oil or carbohydrate have been used as base oil.The polyurea compounds such as two carbamide compounds, three carbamide compounds have been used as water-thickening agent.Carboxylic acid group's rust preventing agent, sulfur phosphorus compound, organic molybdenum etc. have been used as additive.
In addition, be combined respectively seal ring 9a, 9b of the both ends open section of inner space 8 stops up.The lubricating grease 21 that these combined seal rings 9a, 9b prevent from being enclosed in the inner space 8 leaks to the outside, and prevents from being present in the various foreign matters intrusion such as outside rainwater, the dust inner space 8.Especially, in the case of this example, in the contained base oil of lubricating grease 21, the reasons such as temperature rising that can effectively prevent vibration, surrounding enviroment when carrying make from the isolated base oil of water-thickening agent and leak into space outerpace.For the combined seal ring 9a of the opening portion in axial distolateral (left side of Fig. 1) of the obstruction inner space 8 among combined seal ring 9a, the 9b with stop up the combined seal ring 9b of opening portion on axial another distolateral (right side of Fig. 1) of inner space 8, except only this axially another distolateral combined seal ring 9b be provided with encoder 22 these points, basic structure is identical.Therefore, the following description is only carried out axial another distolateral combined seal ring 9b.But any one among these combined seal rings 9a, the 9b all is equivalent to seal ring of the present utility model.
Combined seal ring 9b is made of seal ring 10a, oil thrower 11 and encoder 22.Seal ring 10a connects the sealed member 13a such as elastomer and is bearing on the arbor 12 and forms, described arbor 12 by the sheet metal of steel plate etc. is implemented punch process form the cross section roughly the L font and whole be circular.Arbor 12 has: with interference fit by the stationary cylinder section 14 on the embedded axial end portion inner peripheral surface that is fixed on outer shroud 2a; From the axial ora terminalis of this stationary cylinder section 14 clamping rings section 15 towards the outer circumferential face of interior ring 3d lateral buckling in the diametric(al).In this routine situation, stationary cylinder section 14 is by on the embedded large footpath stepped part 23 that is fixed on the axial end portion inner peripheral surface that is formed at outer shroud 2a.
Especially, in this routine situation, in sealed member 13a, not only be provided with outside sealing lip 16, intermediate seal lip 17 and inner seal lip 18, also be provided with in addition 1 store oil sealing lip 25.This store oil sealing lip 25 forms with the inner circumferential portion state that 8 sides (the width direction center side of roller bearing unit 1a) are outstanding towards the inner space vertically from the clamping rings section 15 that consists of arbor 12, and its global shape is roughly cylindric (circular).In addition, the front-end edge of store oil sealing lip 25 spread all over all-roundly with interior ring 3d in be formed on that circular ladder surface 27 between path stepped part 24 and the shoulder 26 approaches and relative.Thus, between the front-end edge of store oil sealing lip 25 and ladder surface 27, form labyrinth seal structure 28.In addition, the outside dimension of the front-end edge of this store oil sealing lip 25 is less than the outside dimension of shoulder 26.In addition, about being arranged on the sealing lip 16～18 on the sealed member 13a, with structure in the past similarly, front-end edge separately spreads all over all-roundly and the axial sides of rotational circle ring portion 20 or the outer circumferential face sliding contact of rotor section 19.
In this routine situation, by forming store oil sealing lip 25, be formed for storing the storage space 29 from the isolated base oil of water-thickening agent in the base oil in the lubricating grease 21.Specifically, by the axial end portion inner peripheral surface (ratio in the stepped part 23 of large footpath is embedded with the part of the more close inner space 8 of part of stationary cylinder section 14) of the outer circumferential face of store oil sealing lip 25, the outer shroud 2a relative with the outer circumferential face of store oil sealing lip 25 and consist of the outer circumferential face that is present in store oil sealing lip 25 in the clamping rings section 15 of arbor 12 and the axial end portion inner peripheral surface of outer shroud 2a between the side of inner space 8 sides of part, form roughly circular storage space 29.In this storage space 29, there is not the part (form the gap and spill easily base oil) that changes such as the vibration of the such contact condition of the front-end edge of sealing lip and the abutting part between the opposing side when carrying etc.Therefore, can prevent effectively that base oil from spilling from storage space 29.
And, in this routine situation, as from the cardinal extremity edge to the most outstanding vertically part the distance of (being front-end edge this example) and the store oil sealing lip 25 that is defined to axial overhang L(with reference to Fig. 2) limit as described below.Namely, be defined as following size: even disposing the middle arbor O(of (making combined seal ring 9b or 9a towards downside) roller bearing unit 1a with reference to Fig. 1 towards above-below direction), moving to storage space 29 in the situation of (flowing down) from the isolated base oil of water-thickening agent in the base oil in the lubricating grease 21 can prevent that also this base oil from overflowing from storage space 29.Therefore, in this routine situation, can prevent effectively that base oil from overflowing from storage space 29.
In addition, can obtain by experiment from the amount of the isolated base oil of water-thickening agent, also can utilize and obtaining from the relevant test method of oil content (100 ℃, 24 hours) that JlSK222011 stipulates.Perhaps, can also consider that from the amount of the isolated base oil of water-thickening agent the viscosity (the perhaps content of base oil) of lubricating grease 21 decides.
For example, viscosity is the base oil that the lubricating grease of No. 2 (mixed viscosity 265～295) comprises 80～90 quality % of all-mass, and base oil separates from water-thickening agent easily.Relative with it, viscosity is that lubricating grease and the viscosity of No. 3 (mixed viscosity 220～250) is that No. 2 lubricating grease is compared, the few about 5 quality % of the content of base oil, and base oil is difficult to separate from water-thickening agent.And viscosity is that lubricating grease and the viscosity of No. 4 (mixed viscosity 175～205) is that No. 2 lubricating grease is compared, and the few 10 quality % of the content of base oil base oil can occur hardly from the separation of water-thickening agent.Therefore, it is that lubricating grease about No. 2 becomes the state that viscosity is the lubricating grease of No. 3 or No. 4 that the separation of supposing base oil proceeds to viscosity, in the amount of obtaining the base oil that should store by storage space 29, obtaining becomes the store oil of minimum necessary limit sealing lip 25 to axial overhang.For example, the content that the separation of supposing base oil proceeds to base oil is that the viscosity of 85 quality % is that content that No. 2 lubricating grease becomes base oil is that the viscosity of 80 quality % is in No. 3 the situation of state of lubricating grease, become 85/15-80/20=25/15 from the amount (with respect to the ratio of water-thickening agent) of the isolated base oil of water-thickening agent, the base oil that can calculate 25 quality % in the all-mass of lubricating grease of inclosure separates (oil separates) from water-thickening agent.Therefore, the base oil of this 25 quality % (for example, if grease-enclosed amount is 10g, then being 2.5g) is trapped in the storage space 29, sets store oil sealing lip 25 to axial overhang in the mode of not overflowing.
In this example, by such structure, even carrying, disposing middle arbor O in the situation of roller bearing unit 1a towards above-below direction ground during keeping etc., also can effectively prevent in the base oil in the lubricating grease 21 from the isolated base oil of water-thickening agent by combined seal ring 9b, the 9a any one and spill from storage space 29 to space outerpace or overflow, this base oil is stayed in the storage space 29.
And, in this routine situation, because the outside dimension of the front-end edge of store oil sealing lip 25 is less than the outside dimension of shoulder 26, so, hinder internally space 8 side direction inner seal lips 18 side shiftings of base oil, it is moved to storage space 29.And, the front-end edge of store oil sealing lip 25 spread all over all-roundly with each in encircle 3d, 3c ladder surface 27 approach and relative, therefore, even spill from storage space 29 or space 8 is to the inside in the situation of sealing lip 18 side shiftings internally in the base oil of the hypothesis trace vibration when carrying etc., this base oil also can be prevented from by the front-end edge of store oil sealing lip 25 and the situation of the part between the ladder surface 27.
Its result according to this routine roller bearing unit 1a, can prevent from leaking to space outerpace by each combined seal ring 9a, 9b from the isolated base oil of water-thickening agent effectively.Thus, the pollution of surrounding enviroment can be realized preventing, and by making the base oil that contains in the lubricating grease 21 not enough, rolling contact section generation insufficient lubrication can also be effectively prevented.And, can also prevent chronically the generation of false brinelling.
Because this routine roller bearing unit 1a is the roller bearing unit of the first generation, so in general, the state assembled (subassembly) that disposes along the vertical direction with arbor O wherein is on wheel hub, knuckle.And after such assembling operation, the interference margin of each sealing lip 16～18 is stable, and ring 3c, 3d interface close contact each other in each.In addition, adopt in the situation of second generation roller bearing unit, also can carry out same assembling procedure, but adopt in the situation of third generation roller bearing unit, do not carry out the assembling operation to wheel hub, and direct-assembling is to vehicle body.Therefore, in this routine situation, can not leak in space 8 internally by each combined seal ring 9a, 9b from the isolated base oil of water-thickening agent, but be trapped in this inner space 8, can under this state, carry out the assembling operation to vehicle body.And, because after being assembled in this wise on the vehicle body, middle arbor O along continuous straight runs configuration, therefore, isolated base oil returns lubricating grease 21 sides, produces stirring action by rotation, mixes, and is taken into water-thickening agent in the lubricating grease 21.Therefore, this routine roller bearing unit 1a can lubricate each rolling contact section well under the state that is assembled on the vehicle body.And, it is all-roundly approaching and relative with ladder surface 27 that this routine roller bearing unit 1a spreads all over the front-end edge of store oil sealing lip 25, form labyrinth seal structure 28, therefore, under the use state that is assembled on the vehicle body, it also is favourable entering inner space 8 this respects from the various foreign matters that prevent from being present in outside water, dust etc.About other structures, effect and effect, with constructed in the past identical.
［ second case of mode of execution ］
Fig. 3 shows the second case of mode of execution of the present utility model.In this routine situation, the shape of the axial end portion inner peripheral surface of outer shroud 2b is different from the situation of the first case of mode of execution.That is, in this routine situation, be formed with respectively facial 30 and cylinder face 31 at the axial end portion inner peripheral surface of outer shroud 2b.Tilt facial 30 from outward loop orbit 5 inclinations of cylinder face 31.In this example, tilt facial 30 along with approaching outer loop orbit 5 the internal diameter size change is greatly.Relative with it, the internal diameter size of cylinder face 31 is constant vertically.And in this routine situation, cylinder face 31 therein is with the embedded stationary cylinder section 14 that is fixed with the arbor 12 that consists of seal ring 10a of interference fit.In addition, outer loop orbit 5 and facial 30 convex surfaces by cross section circular arc that tilt are that bight 32 is continuous smoothly, and the part between the axial end 33 of cylinder facial 31 and outer shroud 2b is also continuous smoothly by the chamfered section 34 of cross section circular arc.
In addition, the internal diameter size of cylinder face 31 is defined as following size, namely, consist of retainer 7(with reference to Fig. 1 in that ball 4 is being respectively charged into and is remaining on) (subassembly) state of recess (pocket) under, inboard at cylinder face 31, make ball 4 near in the internal side diameters in the scope that these balls 4 is entered to the internal diameter side pressure namely in the recess gap of retainer 7, ball 4 is passed through.In addition, the internal diameter size in bight 32 is slightly less than the external diameter of a circle of these balls 4 under the state of ball 4 being packed between outer loop orbit 5 and the interior loop orbit 6.In this routine situation, simultaneously cylinder facial 31 and chamfered section 34 are implemented abrasive machining, but also can be simultaneously also to the facial 30 enforcement abrasive machining that tilt.
In the situation of the roller bearing unit that this is routine, with the middle arbor O(of roller bearing unit 1a with reference to Fig. 1) in the situation of the configuration from above-below direction to substantially horizontal, the facial 30 outside base oils in the loop orbit 5 guiding storage space 29a efficiently that utilize, described storage space 29a by the inner space 8(that is present in these side faces part each other in the outer circumferential face of store oil sealing lip 25, facial 30, as the to consist of arbor 12 clamping rings section 15 of tilting with reference to Fig. 1) side of side forms.
In addition, among this routine roller bearing unit 1a, when middle assembly body being assembled into outer loop orbit 5 inboard, can effectively prevent the rolling surface damage of these balls 4, described in the middle of assembly body ball 4 be respectively charged into the recess that consists of retainer 7 consist of.And, under the state with middle assembly body (retainer 7 and ball 4) the outer shroud 2b that packs into, can also prevent effectively that these middle assembly bodies from coming off vertically.
And, this routine roller bearing unit 1a is as the situation of the first case of enforcement mode, form large footpath stepped part 23(with reference to Fig. 1 and Fig. 2 with the axial end portion inner peripheral surface at outer shroud 2a) situation compare, the external diameter of combined seal ring 9b is little, seal ring 9b self miniaturization can be made, thereby the reduction of torque can also be realized sealing.In addition, even when the turning to of vehicle, wheel hub is applied moment load etc. and makes in the situation that the SMIS bone photo of the middle arbor of interior ring 3c, 3d and outer shroud 2b tilts mutually, also can suppress the variation of the interference margin of each sealing lip 16～18 little, therefore can also realize the raising of sealability.About other structures, effect and effect, identical with the first case of mode of execution.
［ the 3rd example of mode of execution ］
Fig. 4 shows the 3rd example of mode of execution of the present utility model.In this routine situation, at the axial end portion inner peripheral surface of outer shroud 2c, replace the inclination face 30 that arranges in the structure of second case of mode of execution, form internal diameter size than cylinder facial 31 large and whole axial on the constant large footpath cylinder face 35 of internal diameter size.In addition, be formed with vertically ring-type teat 36 towards the outstanding cross section general triangular shape of combined seal ring 9b side (opposition side of inner space 8 sides is the right side of Fig. 4) in the outside diameter part (the outer circumferential portion of ladder surface 27) of the shoulder 26a of interior ring 3e.And this ring-type teat 36 and store oil sealing lip 25 are radially overlapping.In this routine situation, dispose the front end of store oil sealing lip 25 at the internal side diameter of this ring-type teat 36.
In this routine situation, the axial end portion inner peripheral surface of outer shroud 2c be provided with internal diameter size all whole axially on constant large footpath cylinder facial 35 and cylinder face 31, therefore, compare with the situation of second case, the size management becomes and carries out easily.In addition, owing to be formed with ring-type teat 36 at interior ring 3e, so, with the middle arbor O(of roller bearing unit 1a with reference to Fig. 1) dispose towards above-below direction, when moving in making from the isolated base oil of water-thickening agent to storage space 29b, can stop this base oil to reflux to ladder surface 27 from the outer circumferential face part of shoulder 26a.Therefore, according to this example, this base oil is directed to storage space 29b efficiently.About other structures, effect and effect, identical with first case and the second case of mode of execution.
［ the 4th example of mode of execution ］
Fig. 5 shows the 4th example of mode of execution of the present utility model.In this routine situation, in the outside diameter part of the shoulder 26b of interior ring 3f, do not form ring-type teat 36(in the structure of the 3rd example of mode of execution with reference to Fig. 4), instead, at the radially intermediate portion of ladder surface 27a, spread all over and form vertically recessed annular recessed portion 37 all-roundly.And front-end edge spreads all over from the intermediate portion of store oil sealing lip 25 and inserts in this annular recessed portion 37 all-roundly.Especially, in this routine situation, between the axial sides of the front-end edge of store oil sealing lip 25 and annular recessed portion 37, be formed with micro-gap (axial clearance), and between the side face of the both sides of the side face of the both sides of store oil sealing lip 25 and annular recessed portion 37, be formed with respectively micro-gap (radial clearance), thus, at the labyrinth seal structure 28a of this part Formation cross-section コ font.Have in this routine situation of such structure, owing to can increase the amount of the total length of this labyrinth seal structure 28a, correspondingly be difficult to by the part between store oil sealing lip 25 and the interior ring 3f from the isolated base oil of water-thickening agent.In addition, under the use state that is assembled on the vehicle body, enter inner space 8(with reference to Fig. 1 from preventing being present in the various foreign matters such as outside water, dust), also be favourable.About other structures, effect and effect, identical with first case and the 3rd example of mode of execution.
［ the 5th example of mode of execution ］
Fig. 6 shows the 5th example of mode of execution of the present utility model.In this routine situation, the footpath labiad is that inner seal lip 18a has added the function as the store oil sealing lip.In other words, be provided with the sealing lip 18a of the function that has simultaneously store oil sealing lip and footpath labiad both sides.Therefore, inner seal lip 18a is that roughly V font and global shape constitute circular in the cross section.More particularly, inner seal lip 18a be true dip direction mutually the radially ora terminalis of different outside diameter rake 38 and internal side diameter rake 39 mutually link by curved part 40 each other and consist of.The cardinal extremity edge of outside diameter rake 38 wherein (outside diameter ora terminalis) spreads all over the inner circumferential portion that all-round ground is supported in the clamping rings section 15 of arbor 12 intrusively, to more tend to radially inner side the closer to inner space 8(with reference to Fig. 1) direction of side tilts.On the other hand, the front-end edge of internal side diameter rake 39 (internal side diameter ora terminalis) spreads all over all-roundly the outer circumferential face sliding contact with the rotor section 19 that consists of oil thrower 11, more tilts away from the direction of inner space 8 to more tending to radially inner side.And, link the internal side diameter ora terminalis of outside diameter rakes 38 and the outside diameter ora terminalis of internal side diameter rake 39 by curved part 40, and make this curved part 40 spread all over all-roundly be formed on interior ring 3d on ladder surface 27 sliding contacts or approach and relative.
In this routine situation, outside diameter rake 38 and curved part 40 are as store oil sealing lip performance function.Therefore, the cardinal extremity edge from outside diameter rake 38 is suitable to axial overhang with the store oil sealing lip to the axial distance (L1 Fig. 6) of curved part 40.In addition, in this routine situation, by the large footpath cylinder face 35 on the axial end portion inner peripheral surface of the outer circumferential face of outside diameter rake 38 and curved part 40, outer shroud 2c and the side of inner space 8 sides that are present in these side faces part each other in the clamping rings section 15, form roughly circular storage space 29d.
In this routine situation, the front-end edge of inner seal lip 18a spreads all over all-roundly the outer circumferential face butt (sliding contact) with rotor section 19, therefore, outside diameter rake 38 and the curved part 40 as store oil sealing lip performance function is difficult to towards the radially inner side resiliently deformable.Thus, the aqueous base oil that is stored in the storage space 29d is difficult to spill from this storage space 29d.About other structures, effect and effect, identical with the situation of the first case of mode of execution and the 3rd example.
［ the 6th example of mode of execution ］
Fig. 7 shows the 6th example of mode of execution of the present utility model.In this routine situation, with the 5th example of mode of execution similarly, inner seal lip 18b has added the function as the store oil sealing lip.Especially, in this routine situation, the global shape of inner seal lip 18b is part circular cone tubular, vertically towards inner space 8(with reference to Fig. 1) side-prominent, and make the front end edge inner peripheral surface of inner seal lip 18b spread all over all-roundly outer circumferential face butt (sliding contact) with the shoulder 26 of interior ring 3g.Thus, in this example, the outside dimension that is formed on the path stepped part 24a on the axial end portion outer circumferential face of interior ring 3g than mode of execution first case～the 5th example is large.
And, by the axial end portion inner peripheral surface of the outer circumferential face of inner seal lip 18b, the outer shroud 2a relative with the outer circumferential face of inner seal lip 18b with consist of the side of inner space 8 sides that are present in these side faces part each other in the clamping rings section 15 of arbor 12, form roughly circular storage space 29e.In this routine situation, have under the aqueous basic oil condition even in this storage space 29e, be detained, also can effectively prevent inner seal lip 18b to the radially inner side resiliently deformable, thereby can prevent effectively that base oil from spilling from storage space 29e.In addition, utilize the outer circumferential face of inner seal lip 18b will be trapped in efficiently inside loop orbit 6 guiding of the interior base oil of storage space 29e.In addition, owing to can also realize the expansion of the volume of this storage space 29e, so can realize the increase of storage capacity.About other structures, effect and effect, identical with first case and the 5th example of mode of execution.
［ the 7th example of mode of execution ］
Fig. 8 shows the 7th example of mode of execution of the present utility model.In this routine situation, further study the structure of the 6th example of mode of execution.That is, in this routine situation, do not form path stepped part 24(24a at the interior axial end portion outer circumferential face that encircles 3h) self, and to consist of to the constant mode of the outside dimension of the part of axially deviating from from interior loop orbit 6.And embedding is fixed with the rotor section 19 of oil thrower 11 outside the axial end portion outer circumferential face of interior ring 3h.And, the front end edge inner peripheral surface of inner seal lip 18c with function of store oil sealing lip and footpath labiad both sides spread all over all-round ground directly with the axial end portion outer circumferential face butt (sliding contact) of interior ring 3h.In this routine situation, owing to can reduce the machining period of interior ring 3h, so can realize the reduction of processing cost.In addition, can make the volume increase of storage space 29f omit the amount of shoulder from interior ring 3h, and can increase to the storage capacity of storage space 29f.In addition, although inner seal lip 18c has the shape of overturn easily (easily rolling) when the assembling of combined seal ring 9b, but as shown in the figure, the axial ora terminalis (ora terminalis of inner space 8 sides) of the rotor section 19 by making inner seal lip 18c and oil thrower 11 approaches, the upset of the inner seal lip 18 in the time of can preventing from assembling.About other structures, effect and effect, identical with first case and the 6th example of mode of execution.
［ the 8th example of mode of execution ］
Fig. 9 shows the 8th example of mode of execution of the present utility model.In this routine situation, for increasing the storage capacity from the isolated base oil of water-thickening agent, the shape of arbor 12a and outer shroud 2d is studied.That is, in this routine situation, the axial dimension of the 14a of stationary cylinder section that consists of this arbor 12a is shorter than the situation of the first case of mode of execution～the 7th example.In addition, the 15a of clamping rings section that consists of arbor 12a is bent into roughly crank-like of cross section, and the outside diameter annulus section 41 that is arranged on outside diameter compares with the internal side diameter annulus section 42 that is arranged on internal side diameter, vertically to inner space 8(with reference to Fig. 1) the opposition side biasing.Therefore, the part between outside diameter annulus section 41 and internal side diameter annulus section 42 is provided with and more tends to the rake 43 that radially inner side tilts to the direction of trend inner space 8 sides more vertically.In addition, in this routine situation, the part from the part that is embedded with the 14a of stationary cylinder section to axial disengaging in the axial end portion inner peripheral surface of outer shroud 2d spreads all over and forms the recessed annular recess 44 of oriented radial outside all-roundly.The front-end edge of ladder surface 27(store oil sealing lip 25 of the inner side surface that is positioned at vertically inner space 8 sides in the inner side surface of this annular recess 44 and ring 3d) is positioned at roughly on the same plane.
In this routine situation, side by inner space 8 sides of the bottom surface (inner peripheral surface) of the outer circumferential face of store oil sealing lip 25, annular recess 44 and the part that is present in these side faces part each other among the 15a of clamping rings section (outside diameter half part in outside diameter annulus section 41, rake 43 and the internal side diameter annulus section 42) forms roughly circular storage space 29g.Therefore, in this routine situation, about this storage space 29g, not only realize the increase of volume by forming annular recess 44, also realize the increase of volume by outside diameter annulus section 41 is setovered vertically.Its result can increase from the storage capacity of the isolated base oil of water-thickening agent.About other structures, effect and effect, identical with the first case of mode of execution.
［ the 9th example of mode of execution ］
Figure 10 shows the 9th example of mode of execution of the present utility model.In this routine situation, make and spread all over the annular recess 44a that forms on the axial end portion inner peripheral surface that encircles outside 2e all-roundly and extend to and outer loop orbit 5 continuums of states, the axial dimension (width dimensions) of this annular recess 44a is larger than the situation of the 8th example of mode of execution.In this routine situation, at the middle arbor O(of roller bearing unit 1a with reference to Fig. 1) in the situation about tilting from above-below direction to substantially horizontal, the aqueous base oil that is stored in the storage space 29h is admitted to outer loop orbit 5 efficiently.About other structures, effect and effect, identical with first case and the 8th example of mode of execution.
Industrial applicibility
Implement in the situation of the present utility model, the shape of store oil sealing lip is not limited to illustrated shape, stores the aqueous such function of base oil as long as can bring into play, and can adopt various structures.In addition, about lubricating grease, also be not limited to urea-base grease, can adopt the various lubricating grease that to isolate base oil from water-thickening agent.And, the utility model is not limited to first generation roller bearing unit, can also be used for second generation roller bearing unit, and, can also be used for that wheel hub is made of hub body and interior ring and on the axial intermediate portion outer circumferential face of this hub body, directly form in the third generation roller bearing unit of loop orbit.In addition, adopt in the situation of third generation roller bearing unit, wheel hub (hub body and interior ring) is equivalent to the suitable parts of interior ring.In addition, the rolling bearing system with seal ring of the present utility model can be multiple row or single-row, also can be that interior ring is rotary-type or outer shroud is rotary-type.And the utility model is not limited to the structure that rolling element uses ball, can also be used for using the structure of roller (also comprising needle roller).In addition, in the utility model, can also adopt the structure that has omitted oil thrower as seal ring, and, the structure that has omitted oil thrower and encoder can also be adopted.
Claims (11)
1. the rolling bearing system with seal ring is characterized in that, has:
The suitable parts of outer shroud that have outer loop orbit at inner peripheral surface;
The suitable parts of interior ring that have interior loop orbit at outer circumferential face;
A plurality of rolling elements are arranged between described outer loop orbit and the interior loop orbit these a plurality of rolling element Free-rollings;
Seal ring, described seal ring has the sealed member of the elastic material system that possesses at least 1 sealing lip and the arbor of supporting sealing parts, and when being supported the use that is fixed in the suitable parts of described outer shroud and the suitable parts of described interior ring on the side face of non-rotary static part, and the rotary component that rotates during the use in the suitable parts with described outer shroud of front-end edge by making described sealing lip and the suitable parts of described interior ring or the surface sliding that is fixed on the parts on this rotary component contact, and stop up the open-ended of the space that is provided with described rolling element;
Lubricating grease, described lubricating grease are provided with by inclosure in the space of described rolling element,
On described sealed member, also be provided with vertically the store oil sealing lip side-prominent towards the space that is provided with described rolling element, the part of this store oil sealing lip spreads all over the surface of described rotary component and approaches and relative or sliding contact all-roundly, by the side face relative with side face described static part in the side face of this store oil sealing lip, the side face of this static part, the side of the space side that is provided with described rolling element that is present in these side faces part each other in the described seal ring, form roughly circular storage space, described store oil sealing lip is constrained to following size to axial overhang, namely, because the middle arbor of described rolling bearing system with seal ring is disposed towards above-below direction, in the base oil in the described lubricating grease from the isolated base oil of water-thickening agent to described storage space in the mobile situation, can prevent that also this base oil from overflowing from this storage space.
2. the rolling bearing system with seal ring as claimed in claim 1 is characterized in that, the viscosity of described lubricating grease is No. 2.
3. the rolling bearing system with seal ring as claimed in claim 1 is characterized in that, between the front-end edge of the described store oil sealing lip face relative with the front-end edge with this store oil sealing lip in the described rotary component, is formed with labyrinth seal structure.
4. the rolling bearing system with seal ring as claimed in claim 1, it is characterized in that, the suitable parts of described outer shroud are static part, the axial end portion inner peripheral surface of the suitable parts of this outer shroud is begun to consist of near the outer loop orbit inclination face that then internal diameter size is larger at the whole cylinder face of axially fixing with from this cylinder face by diameter dimension, and it is facial that described seal ring is fixed in this cylinder with interference fit.
5. the rolling bearing system with seal ring as claimed in claim 1, it is characterized in that, the suitable parts of described outer shroud are static part, the axial end portion inner peripheral surface of the suitable parts of this outer shroud is made of at the facial and large footpath of the whole cylinder of axially fixing cylinder face diameter dimension, described large footpath cylinder face is compared with described cylinder face and is arranged on the outer shroud rail side, and internal diameter size is facial larger than this cylinder, and diameter dimension is whole axially fixing, and it is facial that described seal ring is fixed in this cylinder with interference fit.
6. the rolling bearing system with seal ring as claimed in claim 1, it is characterized in that, the suitable parts of described interior ring are rotary components, the outside diameter part of the shoulder that in this, encircles, spread all over and be provided with vertically towards the ring-type teat of the side-prominent cross section general triangular of described seal ring all-roundly, the front end of described store oil sealing lip is configured in the internal side diameter of this ring-type teat.
7. the rolling bearing system with seal ring as claimed in claim 1, it is characterized in that, the suitable parts of described interior ring are rotary components, the radially intermediate portion of the ladder surface of the shoulder that in this, encircles, spread all over the annular recessed portion that is provided with towards axially recessed, the front end of described store oil sealing lip inserts and is configured in this annular recessed portion all-roundly.
8. the rolling bearing system with seal ring as claimed in claim 1, it is characterized in that, the radial seal lip that consists of described sealing lip is that the inner seal lip is roughly V font of cross section, mutually different outside diameter rake and the radially ora terminalis of internal side diameter rake link this inner seal lip each other with true dip direction by curved part, thereby global shape forms circular, and this curved part is as described store oil sealing lip performance function.
9. the rolling bearing system with seal ring as claimed in claim 1, it is characterized in that, the radial seal lip that consists of described sealing lip is that the global shape of inner seal lip is part circular cone tubular, and side-prominent towards the inner space vertically, and, the side face of the shoulder of the front end edge side face of described inner seal lip and the side face of rotary component or this rotary component spreads all over all-round ground butt, and this inner seal lip is as described store oil sealing lip performance function.
10. the rolling bearing system with seal ring as claimed in claim 1, it is characterized in that, in the axial end portion side face of described static part, in the part that breaks away from vertically from the part that is fixed with described seal ring, spread all over and be formed with radially recessed annular recess all-roundly, the clamping rings section of the formation arbor of described seal ring is roughly crank-like of cross section, side face by described store oil sealing lip, the bottom surface of described annular recess, the side of the inner space side that is present in these side faces part each other in the described clamping rings section forms roughly circular storage space.
11. the rolling bearing system with seal ring as claimed in claim 10, it is characterized in that described annular recess arrives outer loop orbit continuously in the situation of the side face that is formed at the suitable parts of described outer shroud, in the situation of the side face that is formed at the suitable parts of described interior ring, arrive continuously interior loop orbit.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011194956A JP5821437B2 (en) | 2011-09-07 | 2011-09-07 | Rolling bearing device with seal ring |
| JP2011-194956 | 2011-09-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202659721U true CN202659721U (en) | 2013-01-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012203368539U Expired - Fee Related CN202659721U (en) | 2011-09-07 | 2012-07-11 | Rolling bearing device with gasket |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP5821437B2 (en) |
| CN (1) | CN202659721U (en) |
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| CN103195822A (en) * | 2013-04-15 | 2013-07-10 | 宁波三泰轴承有限公司 | Waterproof and air leakage-proof bearing |
| CN112610609A (en) * | 2019-10-04 | 2021-04-06 | 斯凯孚公司 | Sealing device with dynamic action, in particular for rolling bearings |
| CN114222869A (en) * | 2019-09-13 | 2022-03-22 | Nok株式会社 | Sealing device |
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| CN104722373B (en) * | 2015-03-27 | 2017-03-01 | 浙江浙矿重工股份有限公司 | A kind of main axle structure on vertical shaft impact crusher |
| CN104722374B (en) * | 2015-03-27 | 2017-03-01 | 浙江浙矿重工股份有限公司 | A kind of crusher chamber assembly in sand making machine |
| JP6628207B2 (en) * | 2015-07-16 | 2020-01-08 | Nok株式会社 | Sealing device |
| JP6606903B2 (en) * | 2015-07-27 | 2019-11-20 | 株式会社ジェイテクト | Rolling bearing |
| KR102161366B1 (en) | 2015-12-31 | 2020-09-29 | 밀리켄 앤드 캄파니 | Purifying agent composition and polyolefin composition comprising the same |
| KR101885139B1 (en) | 2016-07-25 | 2018-08-03 | 주식회사 일진글로벌 | Sealing apparatus for wheel bearing and manufacturing method thereof |
| CN108331844A (en) * | 2017-01-19 | 2018-07-27 | 襄阳汽车轴承股份有限公司 | Large torque heavy duty clutch separation axle sealing structure |
| JP7141199B2 (en) * | 2017-02-24 | 2022-09-22 | Ntn株式会社 | Wheel bearing device |
| AT520701B1 (en) * | 2017-11-20 | 2020-03-15 | Skf Ab | Angular contact roller bearings |
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| JP2000018260A (en) * | 1998-07-01 | 2000-01-18 | Nippon Seiko Kk | Rolling bearing with seal ring |
| JP2003207053A (en) * | 2002-11-08 | 2003-07-25 | Nsk Ltd | Water pump device |
| JP2008240957A (en) * | 2007-03-28 | 2008-10-09 | Nsk Ltd | Bearing device |
| JP2009014180A (en) * | 2007-07-09 | 2009-01-22 | Nsk Ltd | Pack seal rolling bearing |
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2011
- 2011-09-07 JP JP2011194956A patent/JP5821437B2/en active Active
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2012
- 2012-07-11 CN CN2012203368539U patent/CN202659721U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103195822A (en) * | 2013-04-15 | 2013-07-10 | 宁波三泰轴承有限公司 | Waterproof and air leakage-proof bearing |
| CN114222869A (en) * | 2019-09-13 | 2022-03-22 | Nok株式会社 | Sealing device |
| CN112610609A (en) * | 2019-10-04 | 2021-04-06 | 斯凯孚公司 | Sealing device with dynamic action, in particular for rolling bearings |
Also Published As
| Publication number | Publication date |
|---|---|
| JP5821437B2 (en) | 2015-11-24 |
| JP2013057340A (en) | 2013-03-28 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130109 Termination date: 20200711 |
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| CF01 | Termination of patent right due to non-payment of annual fee |