WO2009119313A1 - 駆動車輪用軸受装置 - Google Patents
駆動車輪用軸受装置 Download PDFInfo
- Publication number
- WO2009119313A1 WO2009119313A1 PCT/JP2009/054637 JP2009054637W WO2009119313A1 WO 2009119313 A1 WO2009119313 A1 WO 2009119313A1 JP 2009054637 W JP2009054637 W JP 2009054637W WO 2009119313 A1 WO2009119313 A1 WO 2009119313A1
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- WO
- WIPO (PCT)
- Prior art keywords
- plate
- joint member
- outer joint
- bearing device
- drive wheel
- Prior art date
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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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D1/00—Couplings for rigidly connecting two coaxial shafts or other movable machine elements
- F16D1/10—Quick-acting couplings in which the parts are connected by simply bringing them together axially
- F16D1/108—Quick-acting couplings in which the parts are connected by simply bringing them together axially having retaining means rotating with the coupling and acting by interengaging parts, i.e. positive coupling
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B27/00—Hubs
- B60B27/0005—Hubs with ball bearings
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B27/00—Hubs
- B60B27/0015—Hubs for driven wheels
- B60B27/0021—Hubs for driven wheels characterised by torque transmission means from drive axle
- B60B27/0026—Hubs for driven wheels characterised by torque transmission means from drive axle of the radial type, e.g. splined key
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B27/00—Hubs
- B60B27/0078—Hubs characterised by the fixation of bearings
- B60B27/0084—Hubs characterised by the fixation of bearings caulking to fix inner race
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B7/00—Wheel cover discs, rings, or the like, for ornamenting, protecting, venting, or obscuring, wholly or in part, the wheel body, rim, hub, or tyre sidewall, e.g. wheel cover discs, wheel cover discs with cooling fins
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B7/00—Wheel cover discs, rings, or the like, for ornamenting, protecting, venting, or obscuring, wholly or in part, the wheel body, rim, hub, or tyre sidewall, e.g. wheel cover discs, wheel cover discs with cooling fins
- B60B7/06—Fastening arrangements therefor
- B60B7/061—Fastening arrangements therefor characterised by the part of the wheels to which the discs, rings or the like are mounted
- B60B7/066—Fastening arrangements therefor characterised by the part of the wheels to which the discs, rings or the like are mounted to the hub
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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
- F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
- F16C35/04—Rigid support of bearing units; Housings, e.g. caps, covers in the case of ball or roller bearings
- F16C35/06—Mounting or dismounting of ball or roller bearings; Fixing them onto shaft or in housing
- F16C35/07—Fixing them on the shaft or housing with interposition of an element
- F16C35/073—Fixing them on the shaft or housing with interposition of an element between shaft and inner race ring
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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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
- F16D3/16—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts
- F16D3/20—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members
- F16D3/22—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members the rolling members being balls, rollers, or the like, guided in grooves or sockets in both coupling parts
- F16D3/223—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members the rolling members being balls, rollers, or the like, guided in grooves or sockets in both coupling parts the rolling members being guided in grooves in both coupling parts
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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
- F16C19/185—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 with two raceways provided integrally on a part other than a race ring, e.g. a shaft or housing
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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
- F16C19/186—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 with three raceways provided integrally on parts other than race rings, e.g. third generation hubs
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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
- F16C19/52—Bearings with rolling contact, for exclusively rotary movement with devices affected by abnormal or undesired conditions
- F16C19/527—Bearings with rolling contact, for exclusively rotary movement with devices affected by abnormal or undesired conditions related to vibration and noise
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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
- F16C2326/02—Wheel hubs or castors
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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
- F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
- F16C35/04—Rigid support of bearing units; Housings, e.g. caps, covers in the case of ball or roller bearings
- F16C35/06—Mounting or dismounting of ball or roller bearings; Fixing them onto shaft or in housing
- F16C35/063—Fixing them on the shaft
- F16C35/0635—Fixing them on the shaft the bore of the inner ring being of special non-cylindrical shape which co-operates with a complementary shape on the shaft, e.g. teeth, polygonal sections
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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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D1/00—Couplings for rigidly connecting two coaxial shafts or other movable machine elements
- F16D1/10—Quick-acting couplings in which the parts are connected by simply bringing them together axially
- F16D2001/103—Quick-acting couplings in which the parts are connected by simply bringing them together axially the torque is transmitted via splined connections
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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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
- F16D3/16—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts
- F16D3/20—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members
- F16D3/22—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members the rolling members being balls, rollers, or the like, guided in grooves or sockets in both coupling parts
- F16D3/223—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members the rolling members being balls, rollers, or the like, guided in grooves or sockets in both coupling parts the rolling members being guided in grooves in both coupling parts
- F16D2003/22326—Attachments to the outer joint member, i.e. attachments to the exterior of the outer joint member or to the shaft of the outer joint member
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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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2300/00—Special features for couplings or clutches
- F16D2300/10—Surface characteristics; Details related to material surfaces
Definitions
- the present invention relates to a drive wheel bearing device that rotatably supports drive wheels (front wheels of FF vehicles, rear wheels of FR vehicles, all wheels of 4WD vehicles), for example, with respect to a suspension device of an automobile.
- FIG. 16 illustrates a drive wheel bearing device.
- This bearing device includes a hub wheel 210 and an inner ring 220, double-row rolling elements 230 and 240, an outer ring 250, and a constant velocity universal joint 260 as main components.
- the hub wheel 210 has an inner raceway surface 212 on the outboard side formed on the outer peripheral surface thereof, and a wheel mounting flange 214 for mounting a wheel (not shown). Hub bolts 216 for fixing the wheel disc are implanted at equal intervals in the circumferential direction of the wheel mounting flange 214.
- An inner ring 220 is fitted into a small diameter step 218 formed on the outer peripheral surface of the hub wheel 210, and an inner raceway surface 222 on the inboard side is formed on the outer peripheral surface of the inner ring 220.
- a female spline 211 is formed for connecting a constant velocity universal joint 260, which will be described later, so that torque can be transmitted.
- the inner ring 220 is press-fitted into the small-diameter step portion 218 of the hub ring 210 with an appropriate tightening allowance to prevent creep.
- the inner raceway 212 on the outboard side formed on the outer peripheral surface of the hub wheel 210 and the inner raceway surface 222 on the inboard side formed on the outer peripheral surface of the inner ring 220 constitute a double row inner raceway surface.
- the inner ring 220 is press-fitted into the small-diameter step portion 218 of the hub wheel 210 and the end portion of the small-diameter step portion 218 of the hub wheel 210 is crimped to the outside, so that the inner ring 220 is prevented from coming off with the crimp portion 213.
- the bearing 210 is integrated with the ring 210 to apply a preload.
- the outer ring 250 has double row outer raceway surfaces 252 and 254 facing the inner raceway surfaces 212 and 222 of the hub wheel 210 and the inner ring 220 on the inner circumferential surface, and a vehicle body mounting flange for mounting to a vehicle body (not shown). 256.
- the vehicle body attachment flange 256 is fixed to a knuckle extending from a vehicle suspension system (not shown) with a bolt or the like using an attachment hole 258.
- the bearing portion 270 has a double-row angular ball bearing structure, and has inner raceway surfaces 212 and 222 formed on the outer peripheral surfaces of the hub ring 210 and the inner ring 220 and outer raceway surfaces 252 and 254 formed on the inner peripheral surface of the outer ring 250.
- the rolling elements 230 and 240 are interposed therebetween, and the rolling elements 230 and 240 in each row are held by the cages 232 and 242 so as to be rotatable at equal intervals in the circumferential direction.
- a pair of seals 234 and 244 that seal the annular space between the outer ring 250, the hub ring 210, and the inner ring 220 so as to be in sliding contact with the outer peripheral surfaces of the hub ring 210 and the inner ring 220 are formed at both end openings of the bearing portion 270. Are fitted to the inner diameters of both ends of the inner wall, and prevent leakage of lubricant filled in the inside and intrusion of water and foreign matters from the outside.
- the bearing device is configured by connecting the outer joint member 262 of the constant velocity universal joint 260 to the hub wheel 210 described above.
- the outer joint member 262 of the constant velocity universal joint 260 is provided at one end of an intermediate shaft (not shown) constituting the drive shaft, and accommodates an internal part (not shown) composed of an inner joint member, a ball and a cage.
- a stem portion 266 extending integrally from the base portion of the mouse portion 264 in the axial direction.
- a male spline 268 for connecting the hub wheel 210 described above so as to transmit torque is formed on the outer peripheral surface of the stem portion 266, a male spline 268 for connecting the hub wheel 210 described above so as to transmit torque is formed.
- the stem portion 266 of the outer joint member 262 is press-fitted into the shaft hole of the hub wheel 210, and the male spline 268 formed on the outer peripheral surface of the stem portion 266 and the female spline 211 formed on the inner peripheral surface of the shaft hole of the hub wheel 210.
- the torque can be transmitted by fitting. Further, by tightening the nut 272 to the male screw portion 265 formed at the end portion of the stem portion 266 in a state where the facing surfaces of the caulking portion 213 of the hub wheel 210 and the shoulder portion 261 of the outer joint member 262 face each other.
- the constant velocity universal joint 260 is fixed to the hub wheel 210.
- the caulking portion 213 of the hub wheel 210 of the bearing portion 270 and the shoulder portion 261 of the outer joint member 262 are in contact with each other.
- a stick-slip sound commonly referred to as a cuckling noise, may occur between the caulking portion 213 of the hub wheel 210 of the portion 270 and the shoulder portion 261 of the outer joint member 262.
- This stick-slip noise is transmitted through the male and female splines 211 and 268 when a rotational torque is applied from the outer joint member 262 of the constant velocity universal joint 260 to the hub wheel 210 of the bearing portion 270 that is stationary when the vehicle starts.
- the rotational torque is transmitted from the outer joint member 262 to the hub wheel 210, but the caulking portion of the hub wheel 210 is caused by the transmission torque fluctuation between the outer joint member 262 and the bearing portion 270 and the twist of the outer joint member 262.
- a sudden slip occurs between 213 and the shoulder 261 of the outer joint member 262. This sudden slip causes stick-slip noise.
- the sliding characteristics are excellent between the facing surfaces of the inboard side end portion of the bearing portion 270 and the shoulder portion 261 of the outer joint member 262.
- the occurrence of stick-slip noise is prevented by interposing an annular plate.
- the constant velocity universal joint 260 is fixed to the hub wheel 210 with an axial force by tightening the nut 272 to the male screw portion 265 formed at the end portion of the stem portion 266. Therefore, there is a possibility that the axial force may be reduced by deforming the plate with a large surface pressure applied to the plate by the axial force.
- a gap is generated between the opposing surfaces of the inboard side end portion of the bearing portion 270 and the shoulder portion 261 of the outer joint member 262, and the rust prevention performance of the plate itself is low.
- the stick-slip resistance of the plate is impaired, and the thickness of the plate is reduced by rust, which may cause a further reduction in axial force.
- the durability of the bearing is impaired. A malfunction occurs.
- Patent Documents 1 and 2 described above discloses any surface roughness before coating the plate, and the present applicant paid attention to the surface roughness before coating of the plate.
- the coating material is peeled off at an early stage, and it is difficult to fully exert the function of the coating material.
- the surface roughness before coating is too large, the surface pressure of the convex portion at that surface roughness will increase, causing premature wear of the coating material at that part, and in this case also the function of the coating material It was difficult to fully exhibit.
- An object of the present invention is to provide a drive wheel bearing device that can prevent a reduction in axial force over a long period of time and ensure stick-slip resistance.
- the present invention has an outer member in which a double row outer raceway surface is formed on the inner periphery, a wheel mounting flange at one end and a double row inner raceway surface on the outer periphery,
- An inner member comprising a hub ring and an inner ring, and a double row rolling element interposed between the outer raceway surface of the outer member and the inner raceway surface of the inner member, and the like in the shaft hole of the hub ring, etc.
- a molybdenum coating layer is provided between opposing surfaces of a shoulder portion of the outer joint member and an end portion of the inner member.
- a fluororesin coating layer is formed and a plate having a thickness of 0.5 mm to 2 mm is interposed.
- a plate having excellent sliding characteristics is formed by forming a molybdenum coating layer or a fluororesin coating layer between the opposing surfaces of the shoulder portion of the outer joint member and the end portion of the inner member. Even if the transmission torque fluctuation between the bearing part having the side member and the outer joint member and the torsion of the outer joint member occur, the frictional resistance between the bearing part and the outer joint member is reduced, and the positive slip As a result, the occurrence of stick-slip noise can be prevented without causing a sudden slip between the bearing portion and the outer joint member.
- the thickness of the plate with excellent sliding characteristics to 0.5 mm or more, the strength of the plate is secured and the plate is prevented from being deformed by a large surface pressure applied to the plate by the axial force. This prevents a decrease in axial force.
- the plate thickness to 2 mm or less, a compact design can be ensured without increasing the axial dimension of the bearing device.
- the film thickness of the molybdenum coating layer or the fluororesin coating layer in the present invention is desirably 2 ⁇ m to 30 ⁇ m. If the film thickness of the molybdenum coating layer or the fluororesin coating layer is 2 ⁇ m or more, the molybdenum coating layer or the fluororesin coating layer will not be worn out at an early stage. In addition, if the film thickness of the molybdenum coating layer or the fluororesin coating layer is 30 ⁇ m or less, there is no cost increase by minimizing the amount of coating material used, and a large surface pressure is applied to the plate by the axial force. Even if added, since the collapse of the coating layer can be reduced, the reduction of the axial force can be prevented and the durability of the bearing portion can be ensured.
- the plate material in the present invention is stainless steel. In this way, the plate itself can exhibit a rust-proofing effect, the rust can be prevented from occurring, and it is possible to cope with a use environment that requires a long-term rust-proof performance in an automobile or the like.
- the proof stress of the plate in the present invention is desirably 205 N / mm 2 or more. In this way, even if a large surface pressure is applied to the plate by the axial force, the plate can be prevented from being deformed, and a reduction in the axial force can be prevented.
- the plate according to the present invention includes an annular portion interposed between two opposing surfaces of the shoulder portion of the outer joint member and the end portion of the inner member, and a peripheral edge of the annular portion extending in the axial direction to A structure including a cylindrical portion fitted to the shoulder is desirable.
- the annular portion is connected to the end portion of the inner member and the outer joint member in a state where the plate is assembled to the outer joint member. It can be interposed between the two facing surfaces of the shoulder portion of the body in an easily positioned state.
- the plate according to the present invention includes an annular portion interposed between two opposing surfaces of the shoulder portion of the outer joint member and the end portion of the inner member, and a peripheral edge of the annular portion extending in the axial direction.
- a structure including a cylindrical portion fitted to the end of the member is desirable. With such a structure, the annular portion is connected to the end portion of the inner member and the outer joint member in a state where the plate is assembled to the inner member by fitting the cylindrical portion of the plate to the end portion of the inner member. It can be interposed between the two facing surfaces of the shoulder portion of the body in an easily positioned state.
- the present invention also includes an outer member having a double-row outer raceway surface formed on the inner periphery, a wheel mounting flange at one end, and a double-row inner raceway surface on the outer periphery, and includes a hub wheel and an inner ring.
- An inner member, and a double row rolling element interposed between the outer raceway surface of the outer member and the inner raceway surface of the inner member, and the outer joint of the constant velocity universal joint in the shaft hole of the hub ring.
- a drive wheel bearing device in which a stem portion extending from a member is press-fitted to be spline-fitted, at least one surface of a substrate is coated between opposing surfaces of a shoulder portion of an outer joint member and an end portion of an inner member.
- Rz is one of the surface parameters defined by JIS and is the ten-point average roughness.
- At least one surface of the substrate means that when only the surface of the substrate facing the shoulder of the outer joint member is coated, only the surface of the substrate facing the end of the inner member is coated. And the case of coating both surfaces.
- the inner member is formed by interposing a plate having a predetermined sliding characteristic by coating the surface of the substrate between the opposing surfaces of the shoulder portion of the outer joint member and the end portion of the inner member. Even if the transmission torque fluctuation between the bearing part having the bearing and the outer joint member and the torsion of the outer joint member occur, the frictional resistance between the bearing part and the outer joint member is reduced, and positive slip occurs. By doing so, it is possible to prevent the occurrence of stick-slip noise without causing a sudden slip between the bearing portion and the outer joint member.
- the coating material can easily ride on the surface of the substrate, and the adhesion of the coating material is improved. As a result, even if a rotational torque is input, it is possible to prevent the coating material from being peeled off early or to be worn out in advance, and it becomes easy to fully exhibit the function of the coating material.
- a structure in which a concave groove into which the inner diameter of the plate is fitted is formed in the shoulder portion of the outer joint member.
- a structure in which claw-like protrusions are provided on the inner diameter of the plate is desirable.
- the claw-shaped projections are provided at, for example, a plurality of locations along the circumferential direction of the inner diameter of the plate, so that only the portion of the projection contacts the shoulder portion of the outer joint member in the circumferential direction of the inner diameter of the plate. Therefore, it becomes easy to attach the plate to the outer joint member.
- the plate in the present invention has a predetermined sliding characteristic by coating with at least one film of fluororesin or molybdenum disulfide.
- At least one of fluororesin-based or molybdenum disulfide-based coating refers to coating with only a fluororesin-based coating, coating with only a molybdenum disulfide-based coating, and both. This includes the case of coating with a film.
- a structure in which a lubricant is interposed between at least one of the plate and the shoulder of the outer joint member or between the plate and the end of the inner member is desirable. In this way, the frictional resistance between the bearing portion and the outer joint member can be further reduced to easily cause positive slipping, and the occurrence of stick-slip noise can be more reliably prevented.
- “at least one between the plate and the shoulder of the outer joint member or between the plate and the end of the inner member” is only between the plate and the shoulder of the outer joint member.
- interposing a lubricant it is meant to include the case of interposing the lubricant only between the plate and the end of the inner member, and the case of interposing the lubricant in both of them.
- a hub is formed by forming a small-diameter step portion on the outer peripheral surface of the hub ring on which one inner raceway surface is formed, and press-fitting an inner ring on which the other inner raceway surface is formed in the small-diameter step portion. It can be applied to a type in which the end portion of the small-diameter step portion of the ring is swaged. In this case, the swaged portion of the hub ring is opposed to the shoulder portion of the outer joint member.
- this bearing device has a pair of inner rings fitted on the outer peripheral surface of the hub wheel, an inner raceway surface on the outboard side is formed on the outer peripheral surface of one inner ring, and the outer periphery of the other inner ring is formed. It can also be applied to a type in which the inner raceway surface on the inboard side is formed on the surface. In this case, the end of the other inner ring located on the inboard side is opposed to the shoulder of the outer joint member.
- the bearing portion and the outer joint member having the inner member are loaded. Even if the transmission torque fluctuation between them and the torsion of the outer joint member occur, the frictional resistance between the bearing portion and the outer joint member is reduced so as to cause positive slipping. There is no sudden slip between the outer joint member and the outer joint member. As a result, it is possible to prevent the occurrence of stick-slip noise, improve quietness, and eliminate a sense of discomfort for the passenger.
- the thickness of the plate with excellent sliding characteristics is set to 0.5 mm to 2 mm, the strength of the plate is secured and the plate is prevented from being deformed by the large surface pressure applied to the plate by the axial force.
- a reduction in axial force can be prevented over a long period of time, stick-slip resistance can be ensured, and a compact drive wheel bearing device can be provided.
- the coating material can easily ride on the surface of the substrate and the adhesion of the coating material is improved. As a result, even if rotational torque is input, the coating material can be prevented from premature peeling and early wear, and the coating material function can be fully exerted, making stick-slip resistance longer. It is possible to provide a bearing device for a drive wheel that is secured over the entire area.
- FIG. 5 is a longitudinal sectional view showing an application example in which the plate is interposed between the caulking portion of the hub wheel and the shoulder portion of the outer joint member in the first embodiment of the present invention.
- 2nd embodiment in this invention it is a longitudinal cross-sectional view which shows the application example which interposed the plate between the inboard side edge part of the inner ring
- the third embodiment of the present invention it is a longitudinal sectional view showing an application example in which the plate assembled to the outer joint member is interposed between the caulking portion of the hub wheel and the shoulder portion of the outer joint member.
- it is a longitudinal cross-sectional view which shows the application example which interposed the plate assembled
- it is a longitudinal cross-sectional view which shows the application example which interposed the plate assembled
- It is a longitudinal cross-sectional view which shows the application example which interposed the plate assembled
- the seventh embodiment of the present invention it is a longitudinal sectional view showing an application example in which a plate is interposed between a caulking portion of a hub wheel and a shoulder portion of an outer joint member. It is a partial expanded sectional view which shows the plate of FIG. It is a partial enlarged front view which shows the shoulder part of the outer joint member of FIG. It is a side view which shows a plate with an internal diameter circular. It is the elements on larger scale which show the state which assembled
- FIG. 9th embodiment in this invention it is a longitudinal cross-sectional view which shows the application example which interposed the plate between the caulking part of a hub ring, and the shoulder part of an outer joint member.
- the bearing device of the first embodiment shown in FIG. 1 is mainly composed of the hub ring 10 and the inner ring 20, which are inner members, double row rolling elements 30, 40, the outer ring 50 which is an outer member, and a constant velocity universal joint 60.
- the side closer to the outside of the vehicle in a state assembled to the vehicle is referred to as an outboard (left side in the drawing), and the side closer to the center is referred to as an inboard side (right side in the drawing).
- the hub wheel 10 has an inner raceway surface 12 on the outboard side formed on the outer peripheral surface thereof, and includes a wheel mounting flange 14 for mounting a wheel (not shown). Hub bolts 16 for fixing the wheel disc are implanted at equal intervals in the circumferential direction of the wheel mounting flange 14.
- An inner ring 20 is fitted to a small diameter step portion 18 formed on the outer peripheral surface of the hub wheel 10, and an inner raceway surface 22 on the inboard side is formed on the outer peripheral surface of the inner ring 20.
- a female spline 11 for connecting the constant velocity universal joint 60 so as to transmit torque is formed on the inner peripheral surface of the shaft hole of the hub wheel 10.
- the inner ring 20 is press-fitted into the small-diameter step portion 18 of the hub ring 10 with an appropriate tightening margin to prevent creep.
- the inner raceway 12 on the outboard side formed on the outer peripheral surface of the hub wheel 10 and the inner raceway surface 22 on the inboard side formed on the outer peripheral surface of the inner ring 20 constitute a double row inner raceway surface.
- the inner ring 20 is press-fitted into the small-diameter step portion 18 of the hub wheel 10, and the end portion of the small-diameter step portion 18 of the hub wheel 10 is crimped to the outside, so that the inner ring 20 is prevented from being detached by the crimping portion 13.
- the bearing 10 is integrated with the wheel 10 to apply a preload.
- the outer ring 50 is formed with double row outer raceway surfaces 52 and 54 facing the inner raceway surfaces 12 and 22 of the hub wheel 10 and the inner ring 20 on the inner circumferential surface, and a vehicle body mounting flange for mounting to the vehicle body (not shown). 56.
- the vehicle body attachment flange 56 is fixed to a knuckle extending from a suspension device (not shown) of the vehicle body with a bolt or the like using an attachment hole 58.
- the bearing portion 70 has a double-row angular contact ball bearing structure and has inner raceway surfaces 12 and 22 formed on the outer peripheral surfaces of the hub wheel 10 and the inner ring 20 and outer raceway surfaces 52 and 54 formed on the inner peripheral surface of the outer ring 50.
- the rolling elements 30 and 40 are interposed between the rolling elements 30 and 40, and the rolling elements 30 and 40 in each row are rotatably held by the cages 32 and 42 at equal intervals in the circumferential direction.
- a pair of seals 34 and 44 that seal the annular space between the outer ring 50, the hub ring 10, and the inner ring 20 are provided at both ends of the bearing portion 70 so as to be in sliding contact with the outer peripheral surfaces of the hub ring 10 and the inner ring 20. Are fitted to the inner diameters of both end portions of the nozzle, and prevent leakage of grease filled therein and intrusion of water and foreign matters from the outside.
- the bearing device is configured by connecting the outer joint member 62 of the constant velocity universal joint 60 to the hub wheel 10 described above.
- the outer joint member 62 of the constant velocity universal joint 60 is provided at one end of an intermediate shaft (not shown) constituting the drive shaft, and accommodates an internal part (not shown) composed of an inner joint member, a ball and a cage.
- a stem portion 66 integrally extending in the axial direction from the base portion of the mouse portion 64.
- a male spline 68 for connecting the hub wheel 10 described above so as to transmit torque is formed.
- the stem portion 66 of the outer joint member 62 is press-fitted into the shaft hole of the hub wheel 10, and the male spline 68 formed on the outer peripheral surface of the stem portion 66 and the female spline 11 formed on the inner peripheral surface of the shaft ring of the hub wheel 10.
- the torque can be transmitted by fitting.
- an annular plate 80 having excellent sliding characteristics is interposed between the opposing surfaces of the shoulder portion 61 of the outer joint member 62 and the crimped portion 13 of the hub wheel 10, and the stem portion 66.
- the constant velocity universal joint 60 is fixed to the hub wheel 10 by tightening the nut 72 to the male screw portion 65 formed at the end.
- the constant velocity universal joint 60 and the hub wheel 10 can be fixed by bolts in addition to the nut 72 described above.
- the plate 80 is sandwiched between the opposing surfaces of the shoulder portion 61 of the outer joint member 62 and the caulking portion 13 of the hub wheel 10 with a predetermined tightening force (axial force) by the nut 72.
- the plate 80 interposed between the opposing surfaces of the shoulder portion 61 of the outer joint member 62 and the caulking portion 13 of the hub wheel 10 has a molybdenum (MoS 2 ) coating layer or a fluororesin coating layer 81 formed thereon, and a plate
- MoS 2 molybdenum
- the thickness is 0.5 mm to 2 mm.
- the thickness of the plate 80 is preferably 0.8 mm to 1 mm.
- the plate 80 having excellent sliding characteristics is formed by forming the molybdenum coating layer or the fluororesin coating layer 81 between the facing surfaces of the shoulder portion 61 of the outer joint member 62 and the crimped portion 13 of the hub wheel 10.
- the frictional resistance between the bearing portion 70 and the outer joint member 62 is reduced.
- the thickness of the plate 80 having excellent sliding characteristics is set to 0.5 mm or more, the strength of the plate 80 is secured, and the plate 80 is deformed by a large surface pressure applied to the plate 80 by an axial force. This prevents the reduction of the axial force over a long period of time and secures the stick-slip resistance.
- the thickness of the plate 80 is 2 mm or less, a compact design can be ensured without increasing the axial dimension of the bearing device.
- the thickness of the plate 80 is smaller than 0.5 mm, it is difficult to ensure the strength of the plate 80, and it is likely to be deformed when a large surface pressure is applied by the axial force, which may cause a reduction in the axial force. This causes damage to the plate 80. Further, when the thickness of the plate 80 is larger than 2 mm, the axial dimension of the bearing device becomes large, and it becomes difficult to make the device compact.
- the film thickness of the molybdenum coating layer or the fluororesin coating layer 81 formed on the plate 80 is 2 ⁇ m to 30 ⁇ m. If the film thickness of the molybdenum coating layer or the fluororesin coating layer 81 is 2 ⁇ m or more, the molybdenum coating layer or the fluororesin coating layer 81 will not be worn out at an early stage. Further, if the film thickness of the molybdenum coating layer or the fluororesin coating layer 81 is 30 ⁇ m or less, the use amount of the coating material is kept to a minimum and the cost is not increased. Even if pressure is applied, the coating layer 81 itself is not crushed, so that a reduction in axial force can be prevented, and loosening of the nut 72 can be prevented.
- the coating layer 81 may be worn away at an early stage. If the coating layer 81 has a thickness greater than 30 ⁇ m, the amount of coating material used increases, leading to an increase in cost.
- the coating layer 81 itself is used. The axial force is reduced by crushing, and a gap is created between the opposing surfaces of the inboard side end portion of the bearing portion and the shoulder portion of the outer joint member, and the inboard side end portion of the bearing portion is crimped outward. In the case where the inner ring of the bearing portion and the shoulder portion of the constant velocity universal joint are in direct contact with each other, there is a problem that the durability of the bearing portion is impaired.
- the material of the plate 80 is stainless steel. In this way, by configuring the plate 80 with stainless steel, the plate 80 itself can exhibit a rust-proofing effect, can prevent the occurrence of rust, and is required to have a long-term rust-proof performance in automobiles and the like. It is possible to correspond to the usage environment.
- the proof stress of the plate 80 is set to 205 N / mm 2 or more.
- the proof stress of the plate 80 is set to 205 N / mm 2 or more.
- the small diameter step portion 18 is formed on the outer peripheral surface of the hub wheel 10 on which one inner raceway surface 12 is formed, and the other inner raceway surface 22 is formed on the small diameter step portion 18.
- the inner ring 20 is press-fitted and applied to a bearing device in which the end of the small-diameter stepped portion 18 of the hub wheel 10 is crimped has been described, the present invention is not limited to this.
- a pair of inner rings 20a and 20b are fitted to the outer peripheral surface of the hub wheel 10, an inner raceway surface 22a on the outboard side is formed on the outer peripheral surface of one inner ring 20a, and the other inner ring
- the present invention is also applicable to a type of bearing device in which an inner raceway surface 22b on the inboard side is formed on the outer peripheral surface of 20b.
- the inboard side end of the other inner ring 20 b located on the inboard side is opposed to the shoulder 61 of the outer joint member 62. Therefore, the plate 80 described in the first embodiment is interposed between the inboard side end portion of the inner ring 20 b and the shoulder portion 61 of the outer joint member 62.
- the configuration of the plate 80 that is, the point where the molybdenum coating layer or the fluororesin coating layer 81 is formed and the plate thickness is 0.5 mm to 2 mm, and the film thickness of the molybdenum coating layer or the fluororesin coating layer 81 is as follows.
- FIG. 3 the case where the annular plate 80 is used has been described, but the third embodiment shown in FIG. 3 and FIG. 4 show.
- a plate 82 having an annular portion 82a and a cylindrical portion 82b can be used.
- the third embodiment shown in FIG. 3 is applied to a bearing device in which the end of the small-diameter step portion 18 of the hub wheel 10 is crimped.
- the fourth embodiment shown in FIG. This embodiment is applied to a bearing device of a type in which a pair of inner rings 20a and 20b are fitted to the outer peripheral surface of the hub wheel 10 as in the second embodiment.
- the plate 82 in the third embodiment has an annular portion 82a interposed between two opposing surfaces of the shoulder portion 61 of the outer joint member 62 and the crimped portion 13 of the hub wheel 10, and an outer peripheral edge of the annular portion 82a. It has a structure including a cylindrical portion 82 b extending to the inboard side in the axial direction and fitted to the shoulder portion 61 of the outer joint member 62.
- the plate 82 in the fourth embodiment includes an annular portion 82a interposed between two opposing surfaces of the shoulder portion 61 of the outer joint member 62 and the inboard side end portion of the inner ring 20b, and the annular portion 82a.
- the outer peripheral edge extends to the inboard side in the axial direction, and has a structure including a cylindrical portion 82 b fitted to the shoulder portion 61 of the outer joint member 62.
- These plates 82 are formed with a molybdenum coating layer or a fluororesin coating layer 83 and have a plate thickness of 0.5 mm to 2 mm.
- the film thickness of the molybdenum coating layer or the fluororesin coating layer 83 formed on the plate 82 is 2 ⁇ m to 30 ⁇ m.
- the material of the plate 82 is stainless steel, and the proof stress is 205 N / mm 2 or more.
- the operational effects exerted by the annular portion 82a of the plate 82 by the above configuration are the same as those of the annular plate 80 in the first embodiment shown in FIG. 1 and the second embodiment shown in FIG. Duplicate explanation is omitted.
- the plate 82 can be assembled to the outer joint member 62 by fitting the cylindrical portion 82b of the plate 82 to the shoulder portion 61 of the outer joint member 62.
- the handling of 82 becomes easy.
- the annular portion 82a of the plate 82 can be easily positioned between the facing surfaces of the caulking portion 13 of the hub wheel 10 and the shoulder portion 61 of the outer joint member 62.
- the positioning can be easily performed between the opposing surfaces of the inboard side end portion of the inner ring 20 b and the shoulder portion 61 of the outer joint member 62.
- the plate 82 extends the outer peripheral edge of the annular portion 82 a toward the axial inboard side, and the cylindrical portion 82 b becomes the outer joint member. 62, the case where the plate 82 can be assembled to the outer joint member 62 has been described.
- the present invention is not limited to this and is shown in FIG. It is also possible to use the plates 84 and 86 having the structure as in the fifth embodiment and the sixth embodiment shown in FIG.
- the fifth embodiment shown in FIG. 5 is applied to a bearing device in which the end of the small-diameter step portion 18 of the hub wheel 10 is caulked, as in the third embodiment, and is shown in FIG.
- the sixth embodiment is applied to a type of bearing device in which a pair of inner rings 20a and 20b are fitted to the outer peripheral surface of the hub wheel 10.
- the plate 84 in the fifth embodiment includes an annular portion 84a interposed between two opposing surfaces of the shoulder portion 61 of the outer joint member 62 and the crimped portion 13 of the hub wheel 10, and an outer peripheral edge of the annular portion 84a. It has a structure comprising a cylindrical portion 84b extending to the axial outboard side and fitted to the inboard side end portion of the inner ring 20.
- the plate 86 in the sixth embodiment includes an annular portion 84a interposed between two opposing surfaces of the shoulder portion 61 of the outer joint member 62 and the inboard side end portion of the inner ring 20b, and an inner portion of the annular portion 84a. It has a structure comprising a cylindrical portion 86b that extends to the outboard side in the axial direction and is fitted to the end portion on the inboard side of the inner ring 20b.
- These plates 84 and 86 have molybdenum coating layers or fluororesin coating layers 85 and 87 formed thereon, and have a plate thickness of 0.5 mm to 2 mm.
- the film thickness of the molybdenum coating layer or the fluororesin coating layers 85 and 87 formed on the plates 84 and 86 is 2 ⁇ m to 30 ⁇ m.
- the material of the plates 84 and 86 is stainless steel, and the proof stress is 205 N / mm 2 or more.
- the cylindrical portion 84b of the plate 84 is fitted to the caulking portion 13 of the hub wheel 10, and the sixth embodiment is used.
- the plates 84 and 86 can be assembled to the bearing portion 70, and the handling of the plates 84 and 86 becomes easy.
- the annular portion 84a of the plate 84 can be easily positioned between the facing surfaces of the caulking portion 13 of the hub wheel 10 and the shoulder portion 61 of the outer joint member 62.
- the annular portion 86b of the plate 86 can be easily positioned between the opposing surfaces of the inboard side end portion of the inner ring 20b and the shoulder portion 61 of the outer joint member 62.
- a plate is interposed between the opposing surfaces of the shoulder portion 61 of the outer joint member 62 and the caulking portion 13 of the hub wheel 10 with a predetermined tightening force (axial force) by the nut 72. 180 is sandwiched.
- the plate 180 interposed between the facing surfaces of the shoulder portion 61 of the outer joint member 62 and the caulking portion 13 of the hub wheel 10 coats the surface of the substrate 181 with a fluororesin-based or molybdenum disulfide-based coating 182. Therefore, it has a predetermined sliding characteristic.
- the case where both the outer joint member side surface and the hub wheel side surface of the substrate 181 are coated is illustrated, but only the outer joint member side surface of the substrate 181 is coated, or Only the hub wheel side surface of the substrate 181 may be coated.
- the plate 180 is coated with a fluororesin-based or molybdenum disulfide-based film 182 to ensure excellent sliding characteristics.
- a fluororesin-based or molybdenum disulfide-based film 182 to ensure excellent sliding characteristics.
- coating with a film 182 made only of a fluororesin system coating with a film 182 made only of a molybdenum disulfide system, or coating with a film 182 made of both a fluororesin system and a molybdenum disulfide system may be used. .
- the plate 180 having excellent sliding characteristics is interposed between the facing surfaces of the shoulder portion 61 of the outer joint member 62 and the crimped portion 13 of the hub wheel 10 by coating the surface of the substrate 181. Therefore, even if the transmission torque fluctuation between the bearing portion 70 and the outer joint member 62 and the torsion of the outer joint member 62 occur, the frictional resistance between the bearing portion 70 and the outer joint member 62 is reduced to positively By causing a general slip to occur, it is possible to prevent the occurrence of stick-slip noise without causing a sudden slip between the bearing portion 70 and the outer joint member 62.
- the adhesion of the coating material to the surface of the substrate 181 is improved. As a result, even if a rotational torque is input, it is possible to prevent the coating material from being peeled off early or to be worn out in advance, and it becomes easy to fully exhibit the function of the coating material.
- the outer joint member side surface or hub wheel side to be coated is coated.
- a concave groove 90 into which the inner diameter of the plate 180 is fitted is formed in the shoulder 61 of the outer joint member 62 with which the plate 180 shown in FIGS. 8A and 9 contacts.
- the stealing portion 91 is provided in the innermost part where the 90 plates 180 are fitted.
- the concave groove 90 has a large diameter at the inlet portion 90a into which the plate 180 is inserted and a small diameter at the groove bottom portion 90b into which the plate 180 is fitted.
- the plate 180 can be easily assembled to the shoulder 61 of the outer joint member 62.
- the plate 180 can be easily positioned and interposed between the crimped portion 13 of the hub wheel 10 and the shoulder portion 61 of the outer joint member 62.
- the stealing portion 91 at the innermost portion of the concave groove 90 when the plate 180 is fitted into the concave groove 90 of the shoulder portion 61 of the outer joint member 62, the fitting operation becomes easy.
- the inner diameter of the plate 180 is d 1 , the thickness thereof is t, the diameter of the inlet portion 90 a of the recessed groove 90 of the outer joint member 62 is D 1 , the diameter of the groove bottom portion 90 b is D 2 , and the axial direction When L is L, D 2 ⁇ d 1 ⁇ D 1 and t ⁇ L.
- the small diameter step portion 18 is formed on the outer peripheral surface of the hub wheel 10 on which one inner raceway surface 12 is formed, and the other inner raceway surface 22 is formed on the small diameter step portion 18.
- the present invention is not limited to this.
- a pair of inner rings 20a and 20b are fitted to the outer peripheral surface of the hub wheel 10, an inner raceway surface 22a on the outboard side is formed on the outer peripheral surface of one inner ring 20a, and the other inner ring
- the present invention is also applicable to a type of bearing device in which an inner raceway surface 22b on the inboard side is formed on the outer peripheral surface of 20b.
- the inboard side end of the other inner ring 20 b located on the inboard side is opposed to the shoulder 61 of the outer joint member 62. Therefore, the plate 180 described in the seventh embodiment is interposed between the inboard side end portion of the inner ring 20 b and the shoulder portion 61 of the outer joint member 62.
- D 2 ⁇ d 1 ⁇ D 1 , t ⁇ L and 0 ⁇ D 1 ⁇ d 1 ⁇ 0.5, and the function and effect thereof are the same as in the seventh embodiment described above. Therefore, redundant description is omitted.
- the inner ring 20 is press-fitted into the small-diameter step portion 18 of the hub wheel 10 and the end of the small-diameter step portion 18 of the hub wheel 10 is crimped.
- the plate 184 is interposed between the caulking portion 13 of the hub wheel 10 and the shoulder portion 61 of the outer joint member 62.
- the tenth embodiment is a case where it is applied to a type of bearing device in which a pair of inner rings 20a, 20b is fitted to the outer peripheral surface of the hub wheel 10, as in the eighth embodiment. It is interposed between the inboard side end portion of the inner ring 20 b and the shoulder portion 61 of the outer joint member 62.
- a claw-like protrusion 187 is provided on the inner diameter of the plate 184.
- three protrusions 187 are formed on the inner diameter of the plate 184 at equal intervals in the circumferential direction.
- the inner diameter d 1 of the plate 184 is It becomes an inner diameter at the portion of the protrusion 187 provided on the inner diameter.
- the claw-like projections 187 are provided on the inner diameter of the plate 184, so that the mountability of the plate 184 can be improved. That is, the claw-like projections 187 are provided at, for example, three locations along the circumferential direction of the inner diameter of the plate 184, so that only the portion of the projection 187 in the circumferential direction of the inner diameter of the plate 184 is the shoulder portion 61 of the outer joint member 62. Therefore, the plate 184 can be easily attached to the outer joint member 62. Since the inner end of the protrusion 187 is bent toward the caulking portion 13 of the hub wheel 10, the plate 184 can be easily fitted and cannot be easily detached.
- a lubricant may be interposed in either one of them. Further, a lubricant may be interposed between the plates 180 and 184 and the shoulder portion 61 of the outer joint member 62 and between the plates 180 and 184 and the caulking portion 13 of the hub wheel 10.
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Abstract
Description
Claims (14)
- 内周に複列の外側軌道面が形成された外方部材と、一端に車輪取付フランジを有すると共に外周に複列の内側軌道面を有し、ハブ輪と内輪からなる内方部材と、前記外方部材の外側軌道面と内方部材の内側軌道面との間に介装された複列の転動体とを備え、前記ハブ輪の軸孔に等速自在継手の外側継手部材から延びるステム部をスプライン嵌合させた駆動車輪用軸受装置において、前記外側継手部材の肩部と前記内方部材の端部との対向面間に、摺動特性の優れたコーティング層が形成され、かつ、板厚が0.5mm~2mmを有するプレートを介在させたことを特徴とする駆動車輪用軸受装置。
- 前記プレートにおけるコーティング層をモリブデンコーティング層とした請求項1に記載の駆動車輪用軸受装置。
- 前記プレートにおけるコーティング層をフッ素樹脂コーティング層とした請求項1に記載の駆動車輪用軸受装置。
- 前記プレートにおけるコーティング層の膜厚を2μm~30μmとした請求項1~3のいずれか一項に記載の駆動車輪用軸受装置。
- 前記プレートの材質をステンレス鋼とした請求項1~4のいずれか一項に記載の駆動車輪用軸受装置。
- 前記プレートの耐力を205N/mm2以上とした請求項1~5のいずれか一項に記載の駆動車輪用軸受装置。
- 前記プレートは、外側継手部材の肩部と内方部材の端部との二つの対向面間に介在する環状部と、その環状部の周縁を軸方向に延在して前記外側継手部材の肩部に嵌合させた筒状部とで構成された請求項1~6のいずれか一項に記載の駆動車輪用軸受装置。
- 前記プレートは、外側継手部材の肩部と内方部材の端部との二つの対向面間に介在する環状部と、その環状部の周縁を軸方向に延在して前記内方部材の端部に嵌合させた筒状部とで構成された請求項1~6のいずれか一項に記載の駆動車輪用軸受装置。
- 内周に複列の外側軌道面が形成された外方部材と、一端に車輪取付フランジを有すると共に外周に複列の内側軌道面を有し、ハブ輪と内輪からなる内方部材と、前記外方部材の外側軌道面と内方部材の内側軌道面との間に介装された複列の転動体とを備え、前記ハブ輪の軸孔に等速自在継手の外側継手部材から延びるステム部を圧入してスプライン嵌合させた駆動車輪用軸受装置において、前記外側継手部材の肩部と前記内方部材の端部との対向面間に、基板の少なくとも一方の表面をコーティングすることにより所定の摺動特性を有するプレートを介在させ、コーティングされる前記基板の表面粗さをRz=0.2~15.0としたことを特徴とする駆動車輪用軸受装置。
- 前記外側継手部材の肩部に、前記プレートの内径が嵌まり込む凹溝を形成した請求項9に記載の駆動車輪用軸受装置。
- 前記凹溝のプレートが嵌まり込む最奥部位に盗み部を設けた請求項10に記載の駆動車輪用軸受装置。
- 前記プレートの内径に爪状の突起を設けた請求項9~11のいずれか一項に記載の駆動車輪用軸受装置。
- 前記プレートは、フッ素樹脂系あるいは二硫化モリブデン系の少なくとも一方の皮膜でコーティングすることにより所定の摺動特性を有する請求項9~12のいずれか一項に記載の駆動車輪用軸受装置。
- 前記プレートと外側継手部材の肩部との間、あるいは、前記プレートと内方部材の端部との間の少なくとも一方に潤滑剤を介在させた請求項9~13のいずれか一項に記載の駆動車輪用軸受装置。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/922,584 US8591118B2 (en) | 2008-03-25 | 2009-03-11 | Bearing device for driving wheel |
CN200980110558.2A CN101980877B (zh) | 2008-03-25 | 2009-03-11 | 驱动车轮用轴承装置 |
EP09725468.4A EP2263887B1 (en) | 2008-03-25 | 2009-03-11 | Bearing device for driving wheel |
US14/050,685 US8783964B2 (en) | 2008-03-25 | 2013-10-10 | Bearing device for driving wheel |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2008078994A JP5594505B2 (ja) | 2008-03-25 | 2008-03-25 | 駆動車輪用軸受装置 |
JP2008-078994 | 2008-03-25 | ||
JP2008096437A JP2009248647A (ja) | 2008-04-02 | 2008-04-02 | 駆動車輪用軸受装置 |
JP2008-096437 | 2008-04-02 |
Related Child Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/922,584 A-371-Of-International US8591118B2 (en) | 2008-03-25 | 2009-03-11 | Bearing device for driving wheel |
US14/050,685 Division US8783964B2 (en) | 2008-03-25 | 2013-10-10 | Bearing device for driving wheel |
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WO2009119313A1 true WO2009119313A1 (ja) | 2009-10-01 |
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PCT/JP2009/054637 WO2009119313A1 (ja) | 2008-03-25 | 2009-03-11 | 駆動車輪用軸受装置 |
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US (2) | US8591118B2 (ja) |
EP (1) | EP2263887B1 (ja) |
CN (1) | CN101980877B (ja) |
WO (1) | WO2009119313A1 (ja) |
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US8944196B2 (en) | 2010-03-30 | 2015-02-03 | Ntn Corporation | Wheel bearing apparatus incorporated with an in-wheel motor |
CN113958612A (zh) * | 2021-10-29 | 2022-01-21 | 一汽奔腾轿车有限公司 | 一种扣装有减磨功能的盖状结构的轮毂轴承 |
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CN101980877B (zh) * | 2008-03-25 | 2014-05-07 | Ntn株式会社 | 驱动车轮用轴承装置 |
DE112009000811B4 (de) | 2008-04-10 | 2022-06-09 | Ntn Corporation | Lagervorrichtung für ein Rad |
JP2012163191A (ja) * | 2011-02-09 | 2012-08-30 | Jtekt Corp | 車輪のハブ軸用軸受装置 |
WO2013042595A1 (ja) | 2011-09-21 | 2013-03-28 | Ntn株式会社 | 車輪用軸受および軸受装置 |
ITTO20130508A1 (it) * | 2013-06-19 | 2014-12-20 | Skf Ab | Dispositivo di tenuta per gruppi mozzi ruota connessi a giunti omocinetici |
US9927017B2 (en) * | 2015-04-17 | 2018-03-27 | Aktiebolaget Skf | Sheave for guiding rope in an industrial machine |
JP6622620B2 (ja) * | 2016-02-24 | 2019-12-18 | 日立オートモティブシステムズ株式会社 | プロペラシャフト及びプロペラシャフトの製造方法 |
IT201900023208A1 (it) * | 2019-12-06 | 2021-06-06 | Skf Ab | Gruppo mozzo ruota/giunto omocinetico per veicoli, avente un sistema di serraggio perfezionato |
US11199251B2 (en) * | 2019-12-19 | 2021-12-14 | Schaeffler Technologies AG & Co. KG | Orbitally formed hypoid pinion gear |
CN112412986B (zh) * | 2020-11-23 | 2022-05-03 | 吕梁学院 | 一种方便维修的采煤机行走轮轴承 |
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CN113958612A (zh) * | 2021-10-29 | 2022-01-21 | 一汽奔腾轿车有限公司 | 一种扣装有减磨功能的盖状结构的轮毂轴承 |
Also Published As
Publication number | Publication date |
---|---|
EP2263887A4 (en) | 2011-04-13 |
CN101980877A (zh) | 2011-02-23 |
US20140035350A1 (en) | 2014-02-06 |
US8783964B2 (en) | 2014-07-22 |
CN101980877B (zh) | 2014-05-07 |
EP2263887B1 (en) | 2013-05-22 |
US20110002567A1 (en) | 2011-01-06 |
EP2263887A1 (en) | 2010-12-22 |
US8591118B2 (en) | 2013-11-26 |
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