WO2012114679A1 - 合成樹脂製のスラスト滑り軸受 - Google Patents
合成樹脂製のスラスト滑り軸受 Download PDFInfo
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- WO2012114679A1 WO2012114679A1 PCT/JP2012/000980 JP2012000980W WO2012114679A1 WO 2012114679 A1 WO2012114679 A1 WO 2012114679A1 JP 2012000980 W JP2012000980 W JP 2012000980W WO 2012114679 A1 WO2012114679 A1 WO 2012114679A1
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- annular
- cylindrical
- diameter
- case
- cylindrical portion
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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
- F16C17/00—Sliding-contact bearings for exclusively rotary movement
- F16C17/04—Sliding-contact bearings for exclusively rotary movement for axial load only
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G15/00—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type
- B60G15/02—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type having mechanical spring
- B60G15/06—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type having mechanical spring and fluid damper
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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
- F16C32/00—Bearings not otherwise provided for
- F16C32/04—Bearings not otherwise provided for using magnetic or electric supporting means
- F16C32/0406—Magnetic bearings
- F16C32/0408—Passive magnetic bearings
- F16C32/041—Passive magnetic bearings with permanent magnets on one part attracting the other part
- F16C32/0412—Passive magnetic bearings with permanent magnets on one part attracting the other part for radial load mainly
- F16C32/0414—Passive magnetic bearings with permanent magnets on one part attracting the other part for radial load mainly with facing axial projections
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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
- F16C32/00—Bearings not otherwise provided for
- F16C32/04—Bearings not otherwise provided for using magnetic or electric supporting means
- F16C32/0406—Magnetic bearings
- F16C32/0408—Passive magnetic bearings
- F16C32/041—Passive magnetic bearings with permanent magnets on one part attracting the other part
- F16C32/0417—Passive magnetic bearings with permanent magnets on one part attracting the other part for axial load mainly
- F16C32/0419—Passive magnetic bearings with permanent magnets on one part attracting the other part for axial load mainly with facing radial projections
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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
- F16C33/02—Parts of sliding-contact bearings
- F16C33/04—Brasses; Bushes; Linings
- F16C33/20—Sliding surface consisting mainly of plastics
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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
- F16C33/74—Sealings of sliding-contact bearings
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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
- F16C2208/00—Plastics; Synthetic resins, e.g. rubbers
- F16C2208/20—Thermoplastic resins
- F16C2208/30—Fluoropolymers
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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
- F16C2208/00—Plastics; Synthetic resins, e.g. rubbers
- F16C2208/20—Thermoplastic resins
- F16C2208/60—Polyamides [PA]
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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
- F16C2208/00—Plastics; Synthetic resins, e.g. rubbers
- F16C2208/20—Thermoplastic resins
- F16C2208/66—Acetals, e.g. polyoxymethylene [POM]
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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
- F16C2208/00—Plastics; Synthetic resins, e.g. rubbers
- F16C2208/20—Thermoplastic resins
- F16C2208/70—Polyesters, e.g. polyethylene-terephthlate [PET], polybutylene-terephthlate [PBT]
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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
- F16C2208/00—Plastics; Synthetic resins, e.g. rubbers
- F16C2208/20—Thermoplastic resins
- F16C2208/76—Polyolefins, e.g. polyproylene [PP]
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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
- F16C2326/00—Articles relating to transporting
- F16C2326/01—Parts of vehicles in general
- F16C2326/05—Vehicle suspensions, e.g. bearings, pivots or connecting rods used therein
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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
- F16C2361/00—Apparatus or articles in engineering in general
- F16C2361/53—Spring-damper, e.g. gas springs
Definitions
- the present invention relates to a thrust sliding bearing made of synthetic resin.
- the strut suspension used for the front wheels of a four-wheeled vehicle generally has a structure in which a coil spring is combined with a strut assembly in which a hydraulic shock absorber is built in an outer cylinder integrated with a main shaft.
- a synthetic plastic thrust sliding bearing is used instead of the rolling bearing between the mounting mechanism of the strut assembly to the vehicle body and the upper spring seat member of the coil spring.
- a synthetic resin thrust slide bearing having a resin thrust slide bearing piece In such a synthetic resin thrust slide bearing having a resin thrust slide bearing piece, the upper case and the lower case are prevented in order to prevent entry of dust, muddy water, etc. between the upper case and the lower case.
- Labyrinth means using gaps between the protrusions are provided on the inner peripheral side and the outer peripheral side.
- the present invention has been made in view of the above points, and its object is to effectively prevent entry of dust, muddy water, etc. even under severe conditions, and abnormalities caused by the entry of dust, muddy water, etc. It is an object of the present invention to provide a thrust sliding bearing made of synthetic resin that can reduce the generation of sound.
- the thrust slide bearing made of synthetic resin of the present invention has an upper annular plate-like portion, an outer annular end formed integrally with the outer annular end portion of the upper annular plate-like portion, and depending on the outer annular end portion.
- An upper case made of a synthetic resin having an inner cylindrical portion that is integrally formed at the inner annular end of the cylindrical portion and the upper annular plate portion at the upper annular end and is suspended from the inner annular end, and the upper portion
- a cylinder which is superposed on the case so as to be rotatable around the axis of the upper case and is integrally formed on the lower annular plate-like portion and the annular upper surface of the lower annular plate-like portion, and stands upright from the annular upper surface.
- the lower case An annular plate-like portion that is in contact with the annular upper surface of the cylindrical portion at the annular lower surface, and a cylindrical portion that is integrally formed at the inner annular end of the annular plate-like portion at the upper annular end and hangs down from the inner annular end.
- the outer cylindrical portion of the upper case contacts the inner surface of the outer cylindrical portion with an outer elastically deformable lip portion that projects obliquely downward and outward from the cylindrical outer surface and is integrally formed with the cylindrical outer surface.
- the outer elastic seal member is in contact with the inner surface of the cylindrical portion of the lower case with an outer elastically deformable lip portion that protrudes obliquely upward and outward from the cylindrical outer surface and is integrally formed with the cylindrical outer surface.
- While the upper case's inner cylinder An inner elastic seal member that protrudes obliquely inwardly from the cylindrical inner surface to the outer surface of the portion and is in contact with an inner elastically deformable lip portion integrally formed with the cylindrical inner surface
- the annular lower end surface of the outer cylindrical portion of the upper case faces the annular upper surface of the lower annular plate portion of the lower case with a gap
- the inner surface of the outer cylindrical portion of the upper case is the lower surface of the upper annular plate portion.
- the outer surface of the outer elastic seal member is in contact with the elastically deformable lip portion of the outer elastic seal member, and the outer surface of the cylindrical portion of the lower case is elastic on the inner side of the outer elastic seal member.
- a small-diameter cylindrical outer surface in contact with a deformable lip, a large-diameter cylindrical outer surface having a larger diameter than the small-diameter cylindrical outer surface, and a small-diameter cylindrical outer surface and a large-diameter cylindrical outer surface and outer elastic The annular lower surface of the seal member And the outer surface of the inner cylindrical portion of the upper case is connected to the lower surface of the upper annular plate portion and the outer surface of the large cylindrical shape.
- a small-diameter cylindrical outer surface that is smaller in diameter than the large-diameter cylindrical outer surface and is in contact with an elastically deformable lip portion inside the inner elastic seal member, and the inner surface of the cylindrical portion of the lower case is A small-diameter cylindrical inner surface connected to the annular inner surface of the lower annular plate-like portion of the lower case, and a large-diameter cylindrical shape having a larger diameter than the small-diameter cylindrical surface and connected to the annular upper surface of the cylindrical portion of the lower case An inner cylindrical inner surface that is larger in diameter than the small inner diameter cylindrical inner surface but smaller in diameter than the larger inner cylindrical surface and in contact with the elastically deformable lip portion on the outer side of the inner elastic seal member; Between the inner surface and the inner cylindrical surface.
- the annular lower end surface of the inner cylindrical portion of the upper case connected to the small-diameter cylindrical outer surface of the upper portion faces the lower annular step surface of the cylindrical portion of the lower case with a gap, and the cylindrical portion of the thrust slide bearing piece Is arranged between the large-diameter cylindrical outer surface of the outer cylindrical surface of the upper case and the large-diameter cylindrical inner surface of the inner surface of the cylindrical portion of the lower case.
- the outer elastic seal member protrudes obliquely upward and inward from the cylindrical inner surface, and is formed on the inner cylindrical elastically deformable lip.
- the outer surface of the cylindrical portion of the lower case is in contact with the small-diameter cylindrical outer surface, while projecting obliquely downward outward from the cylindrical outer surface and integrally formed on the cylindrical outer surface.
- the lip is in contact with the frustoconical inner surface of the inner surface of the outer cylindrical portion of the upper case, and is further in contact with the annular stepped surface of the outer surface of the cylindrical portion of the lower case on its annular lower surface.
- the sealing member protrudes obliquely upward and outward from the cylindrical outer surface, and contacts the intermediate cylindrical inner surface of the inner surface of the cylindrical portion of the lower case with an outer elastically deformable lip formed integrally with the cylindrical inner surface. While the cylinder An inner elastically deformable lip that protrudes obliquely inwardly from the inner surface and is integrally formed with the cylindrical inner surface is in contact with the outer surface of the inner cylindrical portion of the upper case and is further in contact with the small-diameter cylindrical outer surface.
- the inner surface of the outer cylindrical portion of the upper case is connected to the annular lower end of the frustoconical inner surface at the upper annular end and is annular to the annular inner edge of the annular lower end surface of the outer cylindrical portion of the upper case.
- the inner surface of the outer cylindrical portion of the upper case is connected to the annular lower end of the frustoconical inner surface at the upper end of the large-diameter ring and the large-diameter circle
- An upper frustoconical surface having a small-diameter annular lower end smaller in diameter than the annular upper end, and a small-diameter annular upper end connected to the small-diameter annular lower end of the upper frustoconical surface and larger in diameter than the small-diameter annular upper end
- a lower truncated conical surface having a large-diameter annular lower end.
- each of the outer elastic seal member and the inner elastic seal member includes an elastic seal body having a corresponding lip part that can be elastically deformed, and a core bar embedded in the elastic seal body. Also good.
- the lower case has a plurality of protrusions integrally formed on the annular upper surface of the cylindrical portion so as to be separated from each other in the direction around the axis, and is formed in an annular plate shape of the thrust slide bearing piece.
- the portion may have a plurality of recesses or notches for receiving each of the plurality of protrusions of the lower case, so that the thrust slide bearing piece can rotate with respect to the rotation about the axis.
- the upper case is rotatable with respect to the lower case around the axis of the upper case.
- the annular lower surface of the outer elastic seal member has at least one elastically deformable annular projecting surface
- the annular lower surface of the inner elastic seal member has at least one elastically deformable annular projecting surface.
- the sealing performance on the annular lower surface of the outer elastic seal member and the annular lower surface of the inner elastic seal member is due to the elastic deformation of the annular projecting surface. And can more effectively prevent the entry of dust, muddy water, etc. into the annular space that accommodates the annular plate-like portion of the thrust slide bearing piece, and the generation of abnormal noise due to the entry of dust, muddy water, etc. can be reduced more preferably. .
- the outer surface of the cylindrical portion of the lower case is connected to the annular upper surface of the cylindrical portion at the annular upper edge, and the small diameter cylindrical shape is in contact with the elastically deformable lip portion inside the outer elastic seal member.
- a small-diameter cylindrical outer surface having a radially projecting cylindrical outer surface larger in diameter than the outer surface and in contact with an elastically deformable lip portion on the inner side of the outer elastic seal member has a radially projecting cylindrical shape in the axial direction.
- the inner surface of the cylindrical portion of the lower case may be arranged between the outer surface and the annular stepped surface where the annular lower surface of the outer elastic seal member is in contact.
- An axial projecting annular step surface that is connected to the upper edge and is closer to the annular lower end surface of the inner cylindrical portion of the upper case in the axial direction than the lower annular step surface that is in contact with the annular lower surface of the inner elastic seal member Has an inner elastic
- the lower annular step surface, which is in contact with the annular lower surface of the tool member, may be disposed between the axially projecting annular step surface and the intermediate cylindrical inner surface in the radial direction.
- the outer elastic seal member and the inner elastic seal member can be preferably positioned by having the outer surface and the axially protruding annular step surface.
- the upper case and the lower case may be made of a synthetic resin including at least one of polyacetal resin, polyamide resin, thermoplastic polyester resin, polyolefin resin, polycarbonate resin, and fluororesin. It is preferable to be made of a synthetic resin including at least one of resin, polyamide resin, thermoplastic polyester resin, polyolefin resin, and fluororesin, and each of the upper case and the lower case is composed of a thrust sliding bearing piece.
- Synthetic resin similar to resin can be used, but especially synthetic resin with good friction characteristics and synthetic resin used for thrust sliding bearing piece is used, and for thrust sliding bearing piece and upper case and lower case Of polyacetal resin and polyamide resin Combined, the combination of a polyolefin resin, particularly polyethylene resin and polyacetal resin, may be mentioned a combination of combinations and polyacetal resin and polyacetal resin with a polyacetal resin and a thermoplastic polyester resin, particularly polybutylene terephthalate resin.
- a thrust sliding bearing made of a synthetic resin that can effectively prevent entry of dust, muddy water, etc. under severe conditions, and can reduce the occurrence of abnormal noise due to the entry of dust, muddy water, etc. Can do.
- FIG. 1 is an explanatory front sectional view of an example of an embodiment of the present invention.
- 2 is a cross-sectional explanatory view taken along the line II-II shown in FIG. 3 of the lower case shown in FIG.
- FIG. 3 is an explanatory plan view of the lower case shown in FIG.
- FIG. 4 is an enlarged front sectional explanatory view of the right part of the example shown in FIG.
- FIG. 5 is a left side enlarged front cross-sectional explanatory diagram of the example shown in FIG.
- FIG. 6 is an explanatory plan view of the thrust slide bearing piece shown in FIG. 7 is a cross-sectional explanatory view taken along the line VII-VII shown in FIG. 6 of the thrust slide bearing piece shown in FIG.
- FIG. 8 is a partial cross-sectional explanatory view of the outer elastic seal member shown in FIG. 1.
- FIG. 9 is a partial cross-sectional explanatory view of the inner elastic seal member shown in FIG. 1.
- FIG. 10 is an enlarged front sectional explanatory view corresponding to FIG. 4 of another example of the embodiment of the present invention.
- 11 is a left side enlarged front sectional explanatory view corresponding to FIG. 5 of another example shown in FIG. 12 is an explanatory plan view of a lower case corresponding to FIG. 3 of another example shown in FIG.
- a synthetic resin thrust sliding bearing 1 of this example is formed integrally with an upper annular plate portion 2 and an outer annular end portion 3 of the upper annular plate portion 2 with an upper annular end portion 4.
- the upper cylindrical end 5 is integrally formed with the outer cylindrical end portion 5 and the inner annular end portion 6 of the upper annular plate-like portion 2 and is suspended from the inner annular end portion 6.
- the upper case 12 is overlapped so as to be rotatable in the R direction around the axis O, and is formed integrally with the lower annular plate-like portion 15 and the annular upper surface 16 of the lower annular plate-like portion 15.
- the cylindrical portion 17 erected from the upper surface 16 and the lower annular plate-like portion 15 R is the direction around the axis O at the radially outer edge of the cylindrical upper surface 20 of the cylindrical portion 17 and the cylindrical upper surface 20 of the cylindrical portion 17 that are integrally formed on the radially inner side of the lower surface 18 and hang down from the annular lower surface 18.
- the annular lower surface 25 contacts the annular upper surface 26 so as to be rotatable in the R direction around the axis O of the upper case 12, while the annular lower surface 27 contacts the annular upper surface 20 of the cylindrical portion 17 of the lower case 22.
- the outer surface 41 of the cylindrical portion 17 of the case 22 protrudes obliquely upward and inward from the cylindrical inner surface 42 and is in contact with an inner elastically deformable lip portion 43 formed integrally with the cylindrical inner surface 42.
- the outer cylindrical portion 5 of the upper case 12 is in contact with the inner surface 44 of the outer cylindrical portion 5 by an outer elastically deformable lip portion 46 that projects obliquely downward and outward from the cylindrical outer surface 45 and is integrally formed with the cylindrical outer surface 45.
- the outer elastic seal member 47 and the inner surface 48 of the cylindrical portion 17 of the lower case 22 projecting obliquely upward and outward from the cylindrical outer surface 49 and integrally formed on the cylindrical outer surface 49 so as to be elastically deformable outside.
- the inner elastic portion integrally formed on the cylindrical inner surface 52 protrudes obliquely inwardly from the cylindrical inner surface 52 to the outer surface 51 of the inner cylindrical portion 8 of the upper case 12.
- the annular lower end surface 61 of the outer cylindrical portion 5 faces the annular upper surface 16 of the lower annular plate-like portion 15 of the lower case 22 with an annular gap 62.
- the inner surface 44 is connected to the lower surface 25 of the upper annular plate-shaped portion 2 and has a frustoconical inner surface 65 in contact with the elastically deformable lip portion 46 on the outer side of the outer elastic seal member 47, and a frustoconical inner surface.
- a cylindrical inner surface 66 connected to the annular lower end of the annular lower end surface 61 and connected to the inner peripheral edge of the annular lower end surface 61 at the lower annular end.
- the outer surface 41 faces the large-diameter cylindrical outer surface 67 with a cylindrical gap 64, and the outer surface 51 of the inner cylindrical portion 8 is connected to the lower surface 25 of the upper annular plate-shaped portion 2. 69 and a large-diameter cylindrical outer surface 6 Inner elastic deformable lip 53 of the inner elastic seal member 54 a smaller diameter than the large-diameter cylindrical outer surface 69 is provided with a small diameter cylindrical outer surface 70 in contact with and is connected to.
- the outer surface 41 of the cylindrical portion 17 has a small-diameter cylindrical outer surface 75 in contact with the elastically deformable lip portion 43 inside the outer elastic seal member 47 and a larger diameter than the small-diameter cylindrical outer surface 75.
- a radially projecting cylindrical outer surface 77 having a larger diameter than a small-diameter cylindrical outer surface 75 connected to the annular upper surface 20 of the portion 17 and in contact with the elastically deformable lip 43 on the inner side of the outer elastic seal member 47.
- the inner surface 48 of the cylindrical portion 17 has a small-diameter cylindrical inner surface 79 connected to the annular inner surface 78 of the lower annular plate-shaped portion 15 and a larger diameter than the small-diameter cylindrical surface 79 and the cylindrical portion 17.
- Annular top surface A large-diameter cylindrical inner surface 80 connected to 0 and a small-diameter cylindrical inner surface 79 are larger in diameter, but smaller in diameter than the large-diameter cylindrical inner surface 80 and are elastically deformable outside the inner elastic seal member 54.
- the upper annular step surface 84 disposed between the intermediate cylindrical inner surface 81 and the large-diameter cylindrical inner surface 80 is connected to the annular upper edge of the small-diameter cylindrical inner surface 79 of the cylindrical portion 17 at the annular inner edge.
- An annular lower end surface 85 of the inner cylindrical portion 8 of the upper case 12 connected to the small-diameter cylindrical outer surface 70 of the inner cylindrical portion 8 of the upper case 12 is a lower annular step surface 83 of the cylindrical portion 17 of the lower case 22. Further, it faces the axially protruding annular step surface 86 with an annular gap 87.
- the small-diameter cylindrical outer surface 75 in contact with the elastically deformable lip 43 on the inner side of the outer elastic seal member 47 is an annular shape in which the radially protruding cylindrical outer surface 77 and the annular lower surface 68 of the outer elastic seal member 47 are in contact in the axial direction.
- the lower annular step surface 83 arranged between the step surface 76 and the annular lower surface 82 of the inner elastic seal member 54 is in contact with the axially projecting annular step surface 86 and the intermediate cylindrical inner surface in the radial direction. 81.
- the outer elastic seal member 47 includes an elastic seal body 91 having elastically deformable lip portions 43 and 46, and a cored bar 92 embedded in the elastic seal body 91.
- the lower surface 68 has elastically deformable annular projecting surfaces 93 and 94 arranged concentrically, and elastically contacts the annular stepped surface 76 via the annular projecting surfaces 93 and 94.
- the inner elastic seal member 54 includes an elastic seal main body 95 having elastically deformable lip portions 50 and 53 and a cored bar 96 embedded in the elastic seal main body 93.
- the annular lower surface 82 has elastically deformable annular projecting surfaces 97 and 98 arranged concentrically, and elastically contacts the lower annular step surface 83 via the annular projecting surfaces 97 and 98. .
- the annular plate-like portion 28 of the thrust slide bearing piece 33 is separated from each other in the R direction integrally with the annular plate-like portion main body 110 having the annular upper surface 26 and the cylindrical outer surface 111 of the annular plate-like portion main body 110.
- a plurality of radial protrusions 113 that project radially from the cylindrical outer surface 111 and that define a plurality of recesses 112 spaced apart in the R direction for receiving the protrusions 21 of the lower case 22;
- the annular upper surface 26 has a plurality of annular grooves 114 and one end opened to the annular groove 114 and the other end opened to the cylindrical outer surface 111 and spaced apart from each other in the R direction.
- the radial groove 115 is formed, the annular groove 114 and the radial groove 115 serve as a lubricant reservoir such as grease, and the cylindrical portion 31 of the thrust slide bearing piece 33 has a large-diameter cylindrical inner surface.
- Cylindrical shape in contact with 80 A cylindrical inner peripheral surface 119 formed with an axial groove 118 opened at the inner annular end 29 on the upper side and opened on the lower annular surface 117 on the lower side at equal intervals in the R direction; A large-diameter cylindrical outer surface 69 and a lower portion of the outer surface 51 of the inner cylindrical portion 8 of the upper case 12 with a cylindrical gap between the large-diameter cylindrical outer surface 69 and the cylindrical inner peripheral surface 119.
- the axial groove 118 is disposed between a lubricant reservoir such as grease and the like, between the large diameter cylindrical inner surface 80 of the inner surface 48 of the cylindrical portion 17 of the case 22. It has become.
- the thrust sliding bearing 1 described above includes the through-hole 122 defined by the cylindrical inner surface 121 of the inner cylindrical portion 8, the annular inner surface 78 of the lower annular plate-shaped portion 15 and the cylindrical portion 17 concentric with the through-hole 122.
- the piston rod of the strut assembly is arranged through the small-diameter cylindrical inner surface 79 and the through hole 124 defined by the cylindrical inner surface 123 of the hanging cylindrical portion 19, and the strut assembly mounting mechanism and the coil spring
- the lower case 22 is attached to the upper spring seat member.
- the upper case 12 is also relatively rotated in the R direction, and the rotation of the upper case 12 in the R direction is the thrust disposed between the upper case 12 and the lower case 22.
- Ri is smoothly performed through the rotation of the upper annular plate portion 2 of the annular lower surface 25 of the upper casing 12 with respect to the annular upper surface 26 of the annular plate portion 28 of the bearing piece 33, thus the steering operation is also performed without resistance.
- the outer elastic seal member 47 is formed by an inner elastically deformable lip portion 43 that protrudes obliquely upward and inward from the cylindrical inner surface 42 and is integrally formed with the cylindrical inner surface 42. While contacting the small-diameter cylindrical outer surface 75 of the outer surface 41 of the cylindrical portion 17 of the lower case 22, the outer side protrudes obliquely downward from the cylindrical outer surface 45 and is formed integrally with the cylindrical outer surface 45.
- An elastically deformable lip portion 46 is in contact with the frustoconical inner surface 65 of the inner surface of the outer cylindrical portion 5 of the upper case 12, and further, an annular lower surface 68 of the outer surface of the cylindrical portion 17 of the lower case 22 is annular.
- An outer elastically deformable lip portion which is in contact with the stepped surface 76 and is formed integrally with the cylindrical outer surface 49 so that the inner elastic sealing member 54 projects obliquely upward and outward from the cylindrical outer surface 49. 50 While contacting the intermediate cylindrical inner surface 81 of the inner surface 48 of the cylindrical portion 17 of the part case 22, it protrudes obliquely inwardly from the cylindrical inner surface 52 and is formed integrally with the cylindrical inner surface 52.
- the deformable lip portion 53 is in contact with the small-diameter cylindrical outer surface 70 of the outer surface 51 of the inner cylindrical portion 8 of the upper case 12, and further, the annular lower surface 82 is below the inner surface 48 of the cylindrical portion 17 of the lower case 22.
- annular lower end surface 61 of the outer cylindrical portion 5 of the upper case 12 and the annular upper surface 16 of the lower annular plate-like portion 15 of the lower case 22 are formed.
- the annular lower surface 68 of the outer elastic seal member 47 has the annular projecting surfaces 93 and 94 that are elastically deformable, and the annular lower surface 82 of the inner elastic seal member 54 is elastic. Since the ring-shaped projecting surfaces 97 and 98 are deformable, the annular projecting surfaces 93 and 94 and the elastic deformation of 97 and 98 cause the annular lower surface 68 of the outer elastic seal member 47 and the ring of the inner elastic seal member 54 to be deformed.
- the sealing performance at the lower surface 82 can be improved, dust and muddy water can be more effectively prevented from entering the annular space 131 that accommodates the annular plate-like portion 28 of the thrust slide bearing piece 33, and dust and muddy water can be prevented from entering.
- the occurrence of abnormal noise can be further preferably reduced.
- the thrust sliding bearing 1 has the radially projecting cylindrical outer surface 77 and the axial projecting annular stepped surface 86, the outer elastic seal member 47 and the inner elastic seal member 54 are positioned. Preferably it can be done.
- the inner surface 44 of the outer cylindrical portion 5 of the upper case 12 includes the frustoconical inner surface 65 and the cylindrical inner surface 66.
- the inner surface 44 of the outer cylindrical portion 5 of the upper case 12 has a large-diameter annular upper end at the annular lower end of the truncated conical inner surface 65 in addition to the truncated conical inner surface 65.
- the upper frustoconical surface 141 having a small diameter annular lower end smaller than the upper end of the large diameter annular ring is connected, and the small diameter annular upper end is connected to the small diameter annular lower end of the upper frustoconical surface 141.
- a lower truncated conical surface 142 having a large-diameter annular lower end larger in diameter than the small-diameter annular upper end.
- the outer surface 41 of the cylindrical portion 17 of the lower case 22 is also large.
- the upper truncated conical surface 141 and A curved concave surface 143 having a shape complementary to the truncated frustoconical surface 142 may be provided, and the upper truncated conical surface 141 and the lower truncated conical surface 142 may face the curved concave surface 143 with a gap 144 therebetween. .
- the cylindrical portion 17 of the lower case 22 is opened at the annular upper surface 20 and is arranged at equal intervals in the R direction.
- a plurality of columnar or triangular columnar recesses 151 may be provided.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sliding-Contact Bearings (AREA)
- Vehicle Body Suspensions (AREA)
- Sealing Of Bearings (AREA)
Abstract
Description
内側弾性シール部材54は、同じく、弾性変形自在なリップ部50及び53を有した弾性シール本体95と、弾性シール本体93に埋め込まれた芯金96とを具備しており、内側弾性シール部材54の環状下面82は、同心に配された弾性変形自在な環状突面97及び98を有しており、環状突面97及び98を介して下方環状段部面83に弾性的に接触している。
2 上部環状板状部
3 外側環状端部
4 上部環状端部
5 外側円筒状部
6 内側環状端部
7 上部環状端部
8 内側円筒状部
9 環状上面
10 上面
11 環状突起部
12 上部ケース
15 下部環状板状部
16 環状上面
17 円筒部
18 環状下面
19 垂下円筒状部
20 環状上面
21 突起部
22 下部ケース
26 環状上面
27 環状下面
28 環状板状部
29 内側環状端部
30 上部環状端部
31 円筒部
33 スラスト滑り軸受片
41 外面
42 円筒状内面
43 リップ部
44 内面
45 円筒状外面
46 リップ部
47 外側弾性シール部材
48 内面
49 円筒状外面
50 リップ部
51 外面
52 円筒状内面
53 リップ部
54 内側弾性シール部材
Claims (9)
- 上部環状板状部、この上部環状板状部の外側環状端部に上部環状端部で一体的に形成されて当該外側環状端部から垂下した外側円筒状部及び上部環状板状部の内側環状端部に上部環状端部で一体的に形成されて当該内側環状端部から垂下した内側円筒状部を有する合成樹脂製の上部ケースと、
この上部ケースに当該上部ケースの軸心回りで回転自在となるように重ね合わされていると共に下部環状板状部及びこの下部環状板状部の環状上面に一体的に形成されて当該環状上面から直立した円筒部を有する合成樹脂製の下部ケースと、
上部ケース及び下部ケース間に配されていると共に上部環状板状部の環状下面に環状上面で上部ケースの軸心回りで回転自在となるように接触する一方、下部ケースの円筒部の環状上面に環状下面で接触した環状板状部及びこの環状板状部の内側環状端部に上部環状端部で一体的に形成されて当該内側環状端部から垂下した円筒部を有した合成樹脂製のスラスト滑り軸受片と、
下部ケースの円筒部の外面に円筒状内面から斜め上方内方に突出して当該円筒状内面に一体的に形成された内側の弾性変形自在なリップ部で接触している一方、上部ケースの外側円筒状部の内面に円筒状外面から斜め下方外方に突出して当該円筒状外面に一体的に形成された外側の弾性変形自在なリップ部で接触している外側弾性シール部材と、
下部ケースの円筒部の内面に円筒状外面から斜め上方外方に突出して当該円筒状外面に一体的に形成された外側の弾性変形自在なリップ部で接触している一方、上部ケースの内側円筒状部の外面に円筒状内面から斜め下方内方に突出して当該円筒状内面に一体的に形成された内側の弾性変形自在なリップ部で接触している内側弾性シール部材と、
を具備しており、
上部ケースの外側円筒状部の環状下端面は、下部ケースの下部環状板状部の環状上面に隙間をもって対面しており、
上部ケースの外側円筒状部の内面は、上部環状板状部の下面に連接されていると共に外側弾性シール部材の外側の弾性変形自在なリップ部が接触した截頭円錐状内面を具備しており、
下部ケースの円筒部の外面は、外側弾性シール部材の内側の弾性変形自在なリップ部が接触した小径円筒状外面と、この小径円筒状外面よりも大径の大径円筒状外面と、小径円筒状外面及び大径円筒状外面間に配していると共に外側弾性シール部材の環状下面が接触した環状段部面とを具備しており、
上部ケースの内側円筒状部の外面は、上部環状板状部の下面に連接された大径円筒状外面と、この大径円筒状外面に連接されていると共に当該大径円筒状外面よりも小径であって内側弾性シール部材の内側の弾性変形自在なリップ部が接触した小径円筒状外面とを具備しており、
下部ケースの円筒部の内面は、下部ケースの下部環状板状部の環状内面に連接された小径円筒状内面と、この小径円筒状面よりも大径であると共に下部ケースの円筒部の環状上面に連接された大径円筒状内面と、小径円筒状内面よりも大径である一方、大径円筒状内面よりも小径であって内側弾性シール部材の外側の弾性変形自在なリップ部が接触した中間円筒状内面と、小径円筒状内面及び中間円筒状内面間に配されていると共に内側弾性シール部材の環状下面が接触した下方環状段部面と、中間円筒状内面及び大径円筒状内面間に配された上方環状段部面とを具備しており、
上部ケースの内側円筒状部の小径円筒状外面に連接された当該上部ケースの内側円筒状部の環状下端面は、下部ケースの円筒部の下方環状段部面に隙間をもって対面しており、
スラスト滑り軸受片の円筒部は、上部ケースの内側円筒状部の外面の大径円筒状外面と下部ケースの円筒部の内面の大径円筒状内面との間に配されている、
合成樹脂製のスラスト滑り軸受。 - 上部ケースの外側円筒状部の内面は、截頭円錐状内面の円環状下端に円環状上端で連接していると共に上部ケースの外側円筒状部の環状下端面の環状内縁に環状下端で連接した円筒状内面を具備している請求項1に記載の合成樹脂製のスラスト滑り軸受。
- 上部ケースの外側円筒状部の内面は、截頭円錐状内面の円環状下端に大径円環状上端で連接していると共に当該大径円環状上端よりも小径の小径円環状下端を有した上方截頭円錐面と、この上方截頭円錐面の小径環状下端に小径円環状上端で連接していると共に当該小径円環状上端よりも大径の大径円環状下端を有した下方截頭円錐面とを具備している請求項1に記載の合成樹脂製のスラスト滑り軸受。
- 外側弾性シール部材及び内側弾性シール部材の夫々は、対応の各弾性変形自在なリップ部を有した弾性シール本体と、弾性シール本体に埋め込まれた芯金とを具備している請求項1から3のいずれか一項に記載の合成樹脂製のスラスト滑り軸受。
- 下部ケースは、その円筒部の環状上面に軸心回り方向で互いに離間されて一体的に形成されている複数個の突起部を有しており、スラスト滑り軸受片の環状板状部は、下部ケースの複数個の突起部の夫々を受容する複数個の凹所又は切欠きを有している請求項1から4のいずれか一項に記載の合成樹脂製のスラスト滑り軸受。
- 外側弾性シール部材の環状下面は、少なくとも一つの弾性変形自在な環状突面を有している請求項1から5のいずれか一項に記載の合成樹脂製のスラスト滑り軸受。
- 内側弾性シール部材の環状下面は、少なくとも一つの弾性変形自在な環状突面を有している請求項1から6のいずれか一項に記載の合成樹脂製のスラスト滑り軸受。
- 下部ケースの円筒部の外面は、環状上縁で当該円筒部の環状上面に連接されていると共に外側弾性シール部材の内側の弾性変形自在なリップ部が接触した小径円筒状外面よりも大径の径方向突状円筒状外面を有しており、外側弾性シール部材の内側の弾性変形自在なリップ部が接触した小径円筒状外面は、軸方向において径方向突状円筒状外面と外側弾性シール部材の環状下面が接触した環状段部面との間に配されている請求項1から7のいずれか一項に記載の合成樹脂製のスラスト滑り軸受。
- 下部ケースの円筒部の内面は、環状内縁で当該円筒部の小径円筒状内面の環状上縁に連接されていると共に内側弾性シール部材の環状下面が接触した下方環状段部面よりも軸方向において上部ケースの内側円筒状部の環状下端面により近接した軸方向突状環状段部面を有しており、内側弾性シール部材の環状下面が接触した下方環状段部面は、径方向において軸方向突状環状段部面と中間円筒状内面との間に配されている請求項1から8のいずれか一項に記載の合成樹脂製のスラスト滑り軸受。
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| BR112013019313-1A BR112013019313B1 (pt) | 2011-02-23 | 2012-02-15 | mancal deslizante de escora feito de resina sintética |
| EP12748861.7A EP2679843B1 (en) | 2011-02-23 | 2012-02-15 | Synthetic resin thrust sliding bearing |
| US13/984,651 US8708568B2 (en) | 2011-02-23 | 2012-02-15 | Synthetic resin-made thrust sliding bearing |
| RU2013138683/11A RU2547333C1 (ru) | 2011-02-23 | 2012-02-15 | Упорный подшипник скольжения из синтетической смолы |
| CA2825380A CA2825380C (en) | 2011-02-23 | 2012-02-15 | Synthetic resin-made thrust sliding bearing |
| CN201280009820.6A CN103547822B (zh) | 2011-02-23 | 2012-02-15 | 合成树脂制成的推力滑动轴承 |
| EP18174395.6A EP3385554B1 (en) | 2011-02-23 | 2012-02-15 | Synthetic resin thrust sliding bearing |
| US14/205,863 US9004769B2 (en) | 2011-02-23 | 2014-03-12 | Synthetic resin-made thrust sliding bearing |
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| JP2011037682A JP5444270B2 (ja) | 2011-02-23 | 2011-02-23 | 合成樹脂製のスラスト滑り軸受 |
| JP2011-037682 | 2011-02-23 |
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| US13/984,651 A-371-Of-International US8708568B2 (en) | 2011-02-23 | 2012-02-15 | Synthetic resin-made thrust sliding bearing |
| US14/205,863 Division US9004769B2 (en) | 2011-02-23 | 2014-03-12 | Synthetic resin-made thrust sliding bearing |
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| WO2012114679A1 true WO2012114679A1 (ja) | 2012-08-30 |
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| US (2) | US8708568B2 (ja) |
| EP (2) | EP2679843B1 (ja) |
| JP (1) | JP5444270B2 (ja) |
| CN (2) | CN105221562B (ja) |
| BR (1) | BR112013019313B1 (ja) |
| CA (1) | CA2825380C (ja) |
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- 2012-02-15 EP EP12748861.7A patent/EP2679843B1/en active Active
- 2012-02-15 WO PCT/JP2012/000980 patent/WO2012114679A1/ja not_active Ceased
- 2012-02-15 EP EP18174395.6A patent/EP3385554B1/en active Active
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- 2012-02-15 CN CN201510560658.2A patent/CN105221562B/zh active Active
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- 2012-02-15 BR BR112013019313-1A patent/BR112013019313B1/pt active IP Right Grant
- 2012-02-15 CA CA2825380A patent/CA2825380C/en active Active
- 2012-02-15 US US13/984,651 patent/US8708568B2/en active Active
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2014
- 2014-03-12 US US14/205,863 patent/US9004769B2/en active Active
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001027227A (ja) * | 1999-07-15 | 2001-01-30 | Oiles Ind Co Ltd | 合成樹脂製の滑り軸受 |
| JP2009257516A (ja) | 2008-04-18 | 2009-11-05 | Oiles Ind Co Ltd | スラスト滑り軸受 |
| JP2010031949A (ja) | 2008-07-28 | 2010-02-12 | Oiles Ind Co Ltd | 合成樹脂製スラスト滑り軸受 |
| JP2010053908A (ja) | 2008-08-26 | 2010-03-11 | Oiles Ind Co Ltd | 合成樹脂製スラスト滑り軸受 |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9239081B2 (en) | 2011-10-07 | 2016-01-19 | Oiles Corporation | Synthetic resin-made sliding bearing |
| WO2013051240A1 (ja) * | 2011-10-07 | 2013-04-11 | オイレス工業株式会社 | 合成樹脂製の滑り軸受 |
| US9539874B2 (en) | 2013-02-15 | 2017-01-10 | Oiles Corporation | Synthetic resin-made sliding bearing |
| CN104995420A (zh) * | 2013-02-15 | 2015-10-21 | 奥依列斯工业株式会社 | 合成树脂制滑动轴承 |
| JP2014156908A (ja) * | 2013-02-15 | 2014-08-28 | Oiles Ind Co Ltd | 合成樹脂製の滑り軸受 |
| EP2957785A4 (en) * | 2013-02-15 | 2016-07-27 | Oiles Industry Co Ltd | SLIDING BEARINGS FROM ARTIFICIAL RESIN |
| WO2014125792A1 (ja) * | 2013-02-15 | 2014-08-21 | オイレス工業株式会社 | 合成樹脂製の滑り軸受 |
| US9556906B2 (en) | 2013-02-15 | 2017-01-31 | Oiles Corporation | Synthetic resin-made sliding bearing |
| CN104995420B (zh) * | 2013-02-15 | 2017-07-04 | 奥依列斯工业株式会社 | 合成树脂制滑动轴承 |
| CN106958592A (zh) * | 2013-02-15 | 2017-07-18 | 奥依列斯工业株式会社 | 合成树脂制滑动轴承 |
| US9707816B2 (en) | 2013-02-15 | 2017-07-18 | Oiles Corporation | Synthetic resin-made sliding bearing |
| CN106958592B (zh) * | 2013-02-15 | 2019-03-12 | 奥依列斯工业株式会社 | 合成树脂制滑动轴承 |
| US10422374B2 (en) | 2015-11-20 | 2019-09-24 | Oiles Corporation | Synthetic resin-made sliding bearing |
Also Published As
| Publication number | Publication date |
|---|---|
| CA2825380C (en) | 2015-04-21 |
| CN105221562B (zh) | 2018-09-14 |
| US20140199007A1 (en) | 2014-07-17 |
| RU2547333C1 (ru) | 2015-04-10 |
| RU2587301C1 (ru) | 2016-06-20 |
| CN105221562A (zh) | 2016-01-06 |
| JP2012172814A (ja) | 2012-09-10 |
| US20130322798A1 (en) | 2013-12-05 |
| EP2679843A4 (en) | 2015-07-22 |
| US9004769B2 (en) | 2015-04-14 |
| EP3385554A3 (en) | 2018-11-14 |
| EP3385554A2 (en) | 2018-10-10 |
| US8708568B2 (en) | 2014-04-29 |
| EP2679843B1 (en) | 2018-07-18 |
| CN103547822B (zh) | 2016-03-30 |
| JP5444270B2 (ja) | 2014-03-19 |
| EP3385554B1 (en) | 2021-03-24 |
| BR112013019313B1 (pt) | 2021-04-20 |
| EP2679843A1 (en) | 2014-01-01 |
| CA2825380A1 (en) | 2012-08-30 |
| BR112013019313A2 (pt) | 2020-12-08 |
| CN103547822A (zh) | 2014-01-29 |
| RU2013138683A (ru) | 2015-03-27 |
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