WO2022264880A1 - 車輪用軸受装置 - Google Patents
車輪用軸受装置 Download PDFInfo
- Publication number
- WO2022264880A1 WO2022264880A1 PCT/JP2022/022946 JP2022022946W WO2022264880A1 WO 2022264880 A1 WO2022264880 A1 WO 2022264880A1 JP 2022022946 W JP2022022946 W JP 2022022946W WO 2022264880 A1 WO2022264880 A1 WO 2022264880A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- diameter side
- recess
- outer diameter
- wheel
- hub
- Prior art date
Links
- 238000007789 sealing Methods 0.000 claims abstract description 21
- 230000002093 peripheral effect Effects 0.000 claims description 22
- 239000002184 metal Substances 0.000 claims description 15
- 238000005096 rolling process Methods 0.000 claims description 6
- 239000004519 grease Substances 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000005422 blasting Methods 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 238000005255 carburizing Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 230000036316 preload Effects 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 229920003051 synthetic elastomer Polymers 0.000 description 1
- 239000005061 synthetic rubber Substances 0.000 description 1
- 238000004073 vulcanization Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B27/00—Hubs
- B60B27/0073—Hubs characterised by sealing means
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B27/00—Hubs
- B60B27/0094—Hubs one or more of the bearing races are formed by the hub
-
- 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
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/72—Sealings
- F16C33/76—Sealings of ball or roller bearings
- F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/72—Sealings
- F16C33/76—Sealings of ball or roller bearings
- F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
- F16C33/7869—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted with a cylindrical portion to the inner surface of the outer race and having a radial portion extending inward
- F16C33/7873—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted with a cylindrical portion to the inner surface of the outer race and having a radial portion extending inward with a single sealing ring of generally L-shaped cross-section
- F16C33/7876—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted with a cylindrical portion to the inner surface of the outer race and having a radial portion extending inward with a single sealing ring of generally L-shaped cross-section with sealing lips
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/72—Sealings
- F16C33/76—Sealings of ball or roller bearings
- F16C33/80—Labyrinth sealings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/72—Sealings
- F16C33/76—Sealings of ball or roller bearings
- F16C33/80—Labyrinth sealings
- F16C33/805—Labyrinth sealings in addition to other sealings, e.g. dirt guards to protect sealings with sealing lips
-
- 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
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
- F16J15/3204—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip
- F16J15/3232—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip having two or more lips
-
- 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
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
- F16J15/328—Manufacturing methods specially adapted for elastic sealings
-
- 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
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/44—Free-space packings
- F16J15/447—Labyrinth packings
- F16J15/4476—Labyrinth packings with radial path
-
- 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
-
- 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
Definitions
- the present invention relates to a wheel bearing device.
- a wheel bearing device that rotatably supports a wheel in a suspension system of an automobile or the like is known.
- a wheel bearing device is provided with a sealing device that closes an open end of an annular space formed by an outer member and an inner member to prevent foreign matter such as muddy water from entering.
- the hub wheel which is the inner member, has a hub flange extending radially outward, and the main lip of the sealing device slides on the base end of the hub flange.
- a contact sliding surface is formed, and a recess is formed on the outer diameter side of the sliding surface of the hub flange.
- a side lip of the sealing device faces the recessed portion of the hub flange in a non-contact manner, and the recessed portion and the side lip form a labyrinth seal to improve the muddy water resistance of the sealing device.
- the flange surface located on the outer diameter side of the recess in the hub flange and the recess are formed by turning, and the sliding surface is formed by grinding.
- the hub flange is pushed from the outer diameter side to the inner diameter side.
- the flange surface is ground by hand, it is difficult for a turning tool for turning the flange surface to enter the outer peripheral side edge of the recess from the outer diameter side.
- the turning tool when turning the hub flange, after turning the flange surface on the outer diameter side of the recess, the turning tool is replaced with one suitable for turning the outer peripheral edge of the recess. In addition, it is necessary to turn the concave portion, and the grinding work of the hub wheel is complicated.
- the present invention has been made in view of the above circumstances. Provided is a bearing device for a wheel capable of turning a recessed part and simplifying the grinding work of a hub wheel.
- the wheel bearing device has an outer member having double-row outer raceway grooves on the inner periphery, a hub flange extending radially outward at one end in the axial direction, and a small diameter stepped portion extending axially on the outer periphery. and at least one inner ring press-fitted into the small-diameter step portion of the hub ring, the inner member having double-row inner raceway grooves facing the double-row outer raceway grooves; An opening at one end in the axial direction of an annular space formed by double rows of rolling elements that are rollably accommodated between the raceway grooves of the member and the inner member, and the outer member and the inner member.
- a wheel bearing device comprising a sealing device closing an end, wherein the hub ring includes the inner raceway groove, a seal land portion located at the base end portion of the hub flange, and with which the sealing device is in sliding contact;
- the hub flange has a recess located on the outer diameter side of the seal land portion, and a flange surface located on the outer diameter side of the recess on the hub flange. and a seal member integrally joined to the core metal.
- the recess is , a bottom portion located between the outer diameter side edge portion and the inner diameter side edge portion of the recess and having the largest depth of the recess, and a bottom portion extending from the outer diameter side edge portion toward the bottom portion side in the radial direction. and a tapered surface that slopes toward one end in the axial direction from the outer diameter side edge toward the bottom.
- FIG. 4 is a side cross-sectional view showing the outer seal member and the base end portion of the wheel mounting flange of the hub wheel.
- FIG. 4 is a partial cross-sectional view of the hub wheel viewed from the inner side in the axial direction;
- FIG. 4 is a side cross-sectional view showing the inclination angle of the tapered surface in the recess of the wheel mounting flange;
- FIG. 4 is a side cross-sectional view showing a state in which an inner diameter edge protrudes more toward the inner side than an outer diameter edge in a recess of a wheel mounting flange.
- FIG. 4 is a side cross-sectional view showing a state in which the outer peripheral edge of the heat treatment portion on the outer diameter side is located on the outer diameter side of the bottom portion of the recess of the wheel mounting flange.
- a wheel bearing device 1 shown in FIG. 1 is an embodiment of a wheel bearing device according to the present invention, and is for rotatably supporting a wheel in a suspension device of a vehicle such as an automobile.
- the wheel bearing device 1 has a configuration called a third generation, and includes an outer ring 2 as an outer member, a hub wheel 3 and an inner ring 4 as inner members, and two rows of inner rings as rolling trains. It has a side ball row 5, an outer side ball row 6, an inner side seal member 9 and an outer side seal member 10. - ⁇
- the inner side refers to the vehicle body side of the wheel bearing device 1 when attached to the vehicle body
- the outer side refers to the wheel side of the wheel bearing device 1 when attached to the vehicle body.
- the axial direction means the direction along the rotation axis of the wheel bearing device 1, one axial end side is the outer side, and the other axial end side is the inner side.
- An inner-side opening 2a into which the inner-side seal member 9 can be fitted is formed at the inner-side end of the outer ring 2 .
- An outer-side opening 2b into which an outer-side sealing member 10 can be fitted is formed at the outer-side end of the outer ring 2 .
- An inner-side outer raceway groove 2c and an outer-side outer raceway groove 2d are formed on the inner peripheral surface of the outer ring 2 .
- a vehicle body mounting flange 2e for mounting the outer ring 2 to a vehicle body member is integrally formed on the outer peripheral surface of the outer ring 2 .
- the vehicle body attachment flange 2e is provided with a bolt hole 2g into which a fastening member (here, a bolt) for fastening the vehicle body side member and the outer ring 2 is inserted.
- a small-diameter stepped portion 3a having a smaller diameter than the outer-side end portion is formed at the inner-side end portion of the outer peripheral surface 3j of the hub wheel 3.
- a shoulder portion 3e is formed at the outer end portion of the small-diameter stepped portion 3a of the hub wheel 3.
- a wheel mounting flange 3b for mounting a wheel is integrally formed on the outer side end of the hub wheel 3.
- a plurality of bolt holes 3f are formed in the wheel mounting flange 3b.
- a hub bolt 3i is press-fitted into the bolt hole 3f for fastening the hub wheel 3 and a wheel or brake component.
- the wheel mounting flange 3b is an example of a hub flange extending radially outward.
- An outer-side inner raceway groove 3c is provided on the outer peripheral surface 3j of the hub wheel 3 so as to face the outer-side outer raceway groove 2d of the outer ring 2 . That is, the inner raceway groove 3c is formed by the hub wheel 3 on the outer side of the inner member.
- the outer-side seal member 10 is fitted into the outer-side open end of the annular space formed by the outer ring 2 and the hub wheel 3 to block the outer-side open end.
- the outer side sealing member 10 is an example of a sealing device.
- a seal land portion 3d with which the outer side seal member 10 slides is formed at the inner side base end portion of the wheel mounting flange 3b.
- the inner raceway groove 3c is located adjacent to the inner side of the seal land portion 3d in the axial direction.
- the wheel mounting flange 3b has a flange surface 3k facing the inner side. The flange surface 3k is positioned on the outer diameter side of the seal land portion 3d.
- a concave portion 3m is formed between the flange surface 3k and the seal land portion 3d on the inner side surface of the wheel mounting flange 3b.
- the recess 3m is formed in a groove shape recessed from the inner side surface of the wheel mounting flange 3b toward the outer side.
- the hub wheel 3 has an outer side end face 3g at an end on the outer side of the wheel mounting flange 3b.
- An inner ring 4 is provided on the small-diameter stepped portion 3a of the hub ring 3.
- the inner ring 4 is fixed to the small-diameter stepped portion 3a of the hub wheel 3 by press-fitting and caulking.
- the inner ring 4 applies preload to the inner ball row 5 and the outer ball row 6 which are rolling rows.
- the inner ring 4 has an inner side end surface 4b at the inner side end portion and an outer side end surface 4c at the outer side end portion.
- the hub wheel 3 has an inner side end portion formed with a crimped portion 3h which is crimped to the inner side end face 4b of the inner ring 4. As shown in FIG.
- An inner raceway groove 4 a is provided on the outer peripheral surface of the inner ring 4 so as to face the inner raceway groove 2 c of the outer ring 2 . That is, an inner raceway groove 4a is formed by the inner ring 4 on the inner side of the inner member.
- the inner ball row 5 and the outer ball row 6, which are rolling rows, are formed by holding a plurality of balls 7, which are rolling elements, by a retainer 8.
- the inner ball row 5 is rollably sandwiched between the inner raceway groove 4a of the inner ring 4 and the outer raceway groove 2c of the outer ring 2 on the inner side.
- the outer-side ball train 6 is rotatably sandwiched between the inner raceway groove 3c of the hub wheel 3 and the outer raceway groove 2d of the outer ring 2 on the outer side.
- the inner ball row 5 and the outer ball row 6 are accommodated so as to roll freely between the raceway grooves of the outer member and the inner member.
- the outer ring 2, the hub ring 3, the inner ring 4, the inner ball train 5, and the outer ball train 6 constitute a double-row angular contact ball bearing.
- the wheel bearing device 1 may constitute a double-row tapered roller bearing instead of the double-row angular contact ball bearing.
- the outer side seal member 10 includes a core metal 11 fitted to the inner periphery of the outer end portion of the outer ring 2 and a seal member 12 integrally joined to the core metal 11 . ing.
- the core bar 11 is made of, for example, a steel plate, and has a cylindrical fitting portion 11a fitted to the inner periphery of the outer opening 2b of the outer ring 2, and a fitting portion 11a extending from the inner side end of the fitting portion 11a to the inner diameter side. an inner portion 11b extending to the outside, an outer portion 11c extending radially outward from the outer end of the fitting portion 11a, and an outer edge portion 11d extending radially inward from the outer end of the outer portion 11c.
- the inner portion 11b is bent from the inner side end portion of the fitting portion 11a, extends to the outer side, extends to the inner diameter side, further extends to the inner side and the inner diameter side, and then extends to the inner diameter side.
- the outer edge portion 11d extends toward the inner side with a predetermined gap from the outer peripheral surface 2h of the outer ring 2 .
- the sealing member 12 is made of an elastic member such as synthetic rubber, and is joined to the core metal 11 by vulcanization adhesion.
- the seal member 12 has a base portion 12a, a radial lip 12b, a first contact lip 12c, a second contact lip 12d, a labyrinth lip 12e, and a dam portion 12f.
- the base portion 12a is joined to a range from the inner portion 11b of the metal core 11 to the outer edge portion 11d via the fitting portion 11a and the outer portion 11c.
- the radial lip 12b is positioned at the inner diameter side end of the seal member 12 and extends radially inward and toward the inner side from the inner portion 11b of the metal core 11 .
- the radial lip 12b is in sliding contact with the outer peripheral surface 3j of the hub wheel 3 via an oil film of grease.
- the first contact lip 12c extends radially outward from the inner portion 11b of the metal core 11 toward the wheel mounting flange 3b on the outer diameter side of the radial lip 12b.
- the first contact lip 12c is in sliding contact with the seal land portion 3d via an oil film of grease.
- the first contact lip 12c is an example of a contact lip that contacts the seal land portion 3d.
- the second contact lip 12d extends radially outward from the inner portion 11b of the metal core 11 toward the wheel mounting flange 3b on the outer diameter side of the first contact lip 12c.
- the second contact lip 12d is in sliding contact with the seal land portion 3d via an oil film of grease.
- the second contact lip 12d has a contact portion 121 on the tip end thereof which is in sliding contact with the seal land portion 3d.
- the second contact lip 12d is an example of a contact lip that contacts the seal land portion 3d.
- the seal member 12 in the outer side seal member 10 has a first contact lip 12c and a second contact lip 12d, and has a plurality of contact lips.
- the sealing member 12 can also be configured with one contact lip or with more than two contact lips.
- the labyrinth lip 12e extends from the outer portion 11c of the metal core 11 toward the wheel mounting flange 3b on the outer diameter side of the second contact lip 12d.
- the labyrinth lip 12e faces the recess 3m of the wheel mounting flange 3b with a gap in the axial direction.
- the labyrinth lip 12e is an example of a labyrinth lip that faces the recess with a gap in the axial direction.
- a labyrinth seal is constituted by the labyrinth lip 12e of the seal member 12 and the recess 3m of the wheel mounting flange 3b. , the labyrinth lip 12e and the recess 3m form a labyrinth seal, thereby preventing foreign matter such as muddy water from entering the outer side seal member 10. As shown in FIG.
- the weir portion 12f covers the outer edge portion 11d of the core bar 11, protrudes radially outward from the outer peripheral surface 2h of the outer ring 2, and is in contact with the outer peripheral surface 2h of the outer ring 2.
- the flange surface 3k, the recessed portion 3m, and the seal land portion 3d are positioned in this order from the outer diameter side to the base end side. That is, in the wheel mounting flange 3b, the recess 3m is located on the outer diameter side of the seal land portion 3d, and the flange surface 3k is located on the outer diameter side of the recess 3m. Further, the inner raceway groove 3c is positioned on the inner side and the inner diameter side of the seal land portion 3d.
- the flange surface 3k, the recessed portion 3m, the seal land portion 3d, and the inner raceway groove 3c are turned by a turning tool. A further grinding process is performed.
- the flange surface 3k is machined from the outer diameter side to the inner diameter side, then the concave portion 3m is machined, and then the seal land portion 3d and the inner raceway groove 3c are machined in this order.
- a grinding wheel is used to simultaneously grind the seal land portion 3d and the inner raceway groove 3c.
- the flange surface 3k and the recessed portion 3m have turned surfaces, and the seal land portion 3d and the inner raceway groove 3c have ground surfaces. doing.
- the recess 3m of the hub wheel 3 may be subjected to post-processing such as shot blasting after turning. When shot blasting is applied to the recessed portion 3m, the recessed portion 3m has a blasted surface.
- the recessed portion 3m is formed in an annular groove shape extending along the circumferential direction. , an inner diameter side edge portion 312 that serves as a boundary portion between the recessed portion 3m and the seal land portion 3d, and is located between the outer diameter side edge portion 311 and the inner diameter side edge portion 312 in the radial direction, and has a depth in the axial direction of the recessed portion 3m. and a bottom portion 313 having the greatest height.
- the inner diameter side edge portion 312 of the recess 3m is located on the outer diameter side of the contact portion 121 with respect to the seal land portion 3d of the second contact lip 12d positioned on the outermost diameter side among the contact lips of the seal member 12.
- the inner diameter side edge 312 of the recess 3m be located 1 mm or more on the outer diameter side of the contact portion 121 of the second contact lip 12d. That is, it is preferable that the distance L1 between the inner diameter side edge portion 312 and the contact portion 121 in the radial direction is 1 mm or more.
- the outer ring 2 is When the radial position of the outer side opening 2b located at one end in the axial direction with respect to the hub wheel 3 deviates relatively to the outer diameter side, the contact portion 121 of the second contact lip 12d drops into the recess 3m. It is possible to suppress the deterioration of the sealing performance due to
- the inner diameter side edge 312 of the recess 3m is configured to be located 1 mm or more on the outer diameter side than the contact portion 121 of the second contact lip 12d, the radial direction of the outer side opening 2b with respect to the hub wheel 3 is reduced. Even when the amount of positional deviation is large, it is possible to prevent the contact portion 121 from dropping into the recess 3m and the sealing performance from deteriorating.
- the inner diameter side edge portion 312 of the recessed portion 3m is positioned on the outer diameter side of the contact portion of the first contact lip 12c positioned on the inner diameter side of the second contact lip 12d with respect to the seal land portion 3d. Even if the radial position of the outer side opening 2b with respect to the hub wheel 3 deviates relatively to the outer diameter side, the contact portion of the first contact lip 12c with the seal land portion 3d drops into the recess 3m, and the sealing performance is deteriorated. can be suppressed.
- the recessed portion 3m has a tapered surface 314 that extends from the outer diameter side edge portion 311 toward the bottom portion 313 side in the radial direction and that is inclined toward the outer side from the outer diameter side edge portion 311 toward the bottom portion 313 .
- the tapered surface 314 is a tapered surface having an acute angle ⁇ of inclination toward the outer side with respect to the radial direction.
- the inclination angle ⁇ is set to 26.5° or less.
- the turning tool moves along the movement locus shown in FIG.
- the recessed portion 3m has the tapered surface 314
- the turning tool can smoothly enter the recessed portion 3m along the tapered surface 314 from the flange surface 3k, making it easier for the turning tool to enter the recessed portion 3m.
- the recess 3m can be continuously turned without changing the turning tool, and the turning operation of the hub wheel 3 can be simplified.
- the inclination angle ⁇ of the tapered surface 314 toward the outer side with respect to the radial direction is a small angle of 26.5° or less, it becomes easy for the turning tool to enter the concave portion 3m from the flange surface 3k. Turning work can be further simplified.
- the inner diameter side edge portion 312 of the recess 3m protrudes from the outer diameter side edge portion 311 toward the inner side, which is the outer side seal member 10 side, by a dimension D in the axial direction.
- the seal land portion 3d and the inner raceway groove 3c of the hub wheel 3 are ground using the grinding wheel 15 having the seal land ground portion 15a and the inner raceway groove ground portion 15b. At the same time, the groove 3c is ground.
- the grinding wheel 15 may come into contact with the outer diameter side edge portion 311 of the concave portion 3m, thereby impairing the workability. Further, since the grinding stone 15 contacts the outer diameter side edge portion 311 of the recess 3m, the outer diameter side edge portion 311 is ground by the grinding stone 15, so that the seal land portion 3d and the inner raceway groove grinding portion 15b are ground. There is a possibility that the processing accuracy of the grinding wheel 15 may be lowered, or the life of the grinding wheel 15 may be shortened.
- the inner diameter side edge portion 312 of the recessed portion 3m to protrude more toward the inner side than the outer diameter side edge portion 311, when grinding the seal land portion 3d and the inner raceway groove grinding portion 15b, grinding The grindstone 15 does not come into contact with the outer diameter side edge portion 311 of the recess 3m, so that the workability of the grinding process is not impaired.
- the grinding wheel 15 since the grinding wheel 15 does not cut the outer diameter side edge 311 of the recess 3m, it is possible to suppress the deterioration of the life of the grinding wheel 15 and the processing accuracy of the grinding process.
- the hub wheel 3 has a heat-treated portion 31 that is quenched at least within the range where the inner raceway groove 3c, the seal land portion 3d, and the recessed portion 3m are formed.
- the entire portion where the inner raceway groove 3c and the seal land portion 3d are formed is quenched, and the portion where the recess 3m is formed is partially quenched.
- Hardening in the heat treatment section 31 can be performed by induction hardening, carburizing hardening, or the like.
- the heat-treated portion 31 has an outer peripheral edge 31a that serves as a boundary with the non-heat-treated portion on the outer surface of the hub wheel 3, and the outer peripheral edge 31a on the outer diameter side of the heat-treated portion 31 extends outside the bottom portion 313 of the recess 3m. located on the diameter side.
- the outer peripheral edge 31a of the heat treatment portion 31 is located on the outer diameter side by 1 mm or more from the bottom portion 313 of the concave portion 3m. That is, in the radial direction, the distance L2 between the bottom portion 313 of the recess 3m and the outer peripheral edge 31a located on the outer diameter side of the bottom portion 313 is preferably 1 mm or more.
- the outer peripheral edge 31a of the heat-treated portion 31 is arranged on the outer diameter side of the bottom 313 of the recess 3m so that the outer peripheral edge 31a is not located on the bottom 313.
- the present invention can be used for wheel bearing devices.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Rolling Contact Bearings (AREA)
- Sealing With Elastic Sealing Lips (AREA)
- Sealing Devices (AREA)
- Sealing Of Bearings (AREA)
Abstract
Description
図1に示す車輪用軸受装置1は、本発明に係る車輪用軸受装置の一実施形態であり、自動車等の車両の懸架装置において車輪を回転自在に支持するものである。
図2に示すように、アウター側シール部材10は、外輪2におけるアウター側端部の内周に篏合される芯金11と、芯金11に一体的に接合されるシール部材12とを備えている。
図2に示すように、ハブ輪3の車輪取り付けフランジ3bにおいては、外径側から基端部側へ向けて、フランジ面3k、凹部3m、およびシールランド部3dの順に位置している。つまり、車輪取り付けフランジ3bにおいては、シールランド部3dの外径側に凹部3mが位置し、凹部3mの外径側にフランジ面3kが位置している。また、シールランド部3dのインナー側かつ内径側には、内側軌道溝3cが位置している。
2 外輪
2b アウター側開口部
2c (インナー側の)外側軌道溝
2d (アウター側の)外側軌道溝
3 ハブ輪
3b 車輪取り付けフランジ
3c 内側軌道溝
3d シールランド部
3k フランジ面
3m 凹部
4 内輪
4a 内側軌道溝
5 インナー側ボール列
6 アウター側ボール列
10 アウター側シール部材
11 芯金
12 シール部材
12c 第1接触リップ
12d 第2接触リップ
12e ラビリンスリップ
31 熱処理部
31a 外周縁
311 外径側縁部
312 内径側縁部
313 底部
314 テーパ面
θ 傾斜角度
Claims (7)
- 内周に複列の外側軌道溝を有する外方部材と、
軸方向の一端部に径方向外側へ延びるハブフランジを有し、外周に軸方向に延びる小径段部を有するハブ輪、および前記ハブ輪の小径段部に圧入された少なくとも一つの内輪からなり、前記複列の外側軌道溝に対向する複列の内側軌道溝を有する内方部材と、
前記外方部材と前記内方部材との両軌道溝間に転動自在に収容された複列の転動体と、
前記外方部材と前記内方部材とによって形成された環状空間の軸方向一端側の開口端を塞ぐ密封装置と、を備える車輪用軸受装置であって、
前記ハブ輪は、前記内側軌道溝と、前記ハブフランジの基端部に位置し、前記密封装置が摺接するシールランド部と、前記ハブフランジにおける前記シールランド部の外径側に位置する凹部と、前記ハブフランジにおける前記凹部の外径側に位置するフランジ面とを有し、
前記密封装置は、前記外方部材における軸方向一端部に篏合される芯金と、前記芯金に一体的に接合されるシール部材とを備え、
前記シール部材は、前記芯金から前記ハブフランジ側へ向けて延出し、前記シールランド部と接触する接触リップと、前記接触リップよりも外径側において前記芯金から前記ハブフランジ側へ向けて延出し、軸方向において前記凹部と隙間をもって対向するラビリンスリップとを有し、
前記凹部は、前記凹部の外径側縁部と内径側縁部との間に位置し、前記凹部の深さが最も大きい底部と、径方向において前記外径側縁部から前記底部側へ向けて延出し、前記外径側縁部から前記底部へ向かうに従って軸方向一端側へ傾斜するテーパ面と、を有する車輪用軸受装置。 - 前記フランジ面および前記凹部は旋削加工面を有する請求項1に記載の車輪用軸受装置。
- 前記テーパ面の径方向に対する軸方向一端側への傾斜角度は、26.5°以下である請求項1または請求項2に記載の車輪用軸受装置。
- 前記内側軌道溝および前記シールランド部は研削加工面を有しており、
前記ハブフランジにおける前記凹部の前記内径側縁部は、軸方向において前記外径側縁部よりも前記密封装置側へ突出している請求項1~3の何れか一項に記載の車輪用軸受装置。 - 前記ハブ輪は、少なくとも前記内側軌道溝、前記シールランド部、および前記凹部が形成されている範囲内において焼入れが施された熱処理部を有し、
前記熱処理部における外径側の外周縁は、前記凹部の前記底部よりも外径側に位置する請求項1~4の何れか一項に記載の車輪用軸受装置。 - 前記ハブフランジにおける前記凹部の前記内径側縁部は、前記シール部材における前記接触リップの前記ハブフランジに対する接触部よりも外径側に位置する請求項1~5の何れか一項に記載の車輪用軸受装置。
- 前記シール部材は、1つまたは2つ以上の前記接触リップを有する請求項1~6の何れか一項に記載の車輪用軸受装置。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP22824872.0A EP4357631A1 (en) | 2021-06-14 | 2022-06-07 | Wheel bearing device |
CN202280040620.0A CN117441067A (zh) | 2021-06-14 | 2022-06-07 | 车轮用轴承装置 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2021-098729 | 2021-06-14 | ||
JP2021098729A JP2022190415A (ja) | 2021-06-14 | 2021-06-14 | 車輪用軸受装置 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2022264880A1 true WO2022264880A1 (ja) | 2022-12-22 |
Family
ID=84527466
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2022/022946 WO2022264880A1 (ja) | 2021-06-14 | 2022-06-07 | 車輪用軸受装置 |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP4357631A1 (ja) |
JP (1) | JP2022190415A (ja) |
CN (1) | CN117441067A (ja) |
WO (1) | WO2022264880A1 (ja) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010180896A (ja) * | 2009-02-03 | 2010-08-19 | Ntn Corp | 車輪用軸受シールおよびこれを備えた車輪用軸受装置 |
JP2013061048A (ja) | 2011-09-15 | 2013-04-04 | Nsk Ltd | シール付車輪支持用軸受ユニット |
JP2013072553A (ja) * | 2011-09-29 | 2013-04-22 | Nsk Ltd | シール付車輪支持用転がり軸受ユニット |
-
2021
- 2021-06-14 JP JP2021098729A patent/JP2022190415A/ja active Pending
-
2022
- 2022-06-07 EP EP22824872.0A patent/EP4357631A1/en active Pending
- 2022-06-07 WO PCT/JP2022/022946 patent/WO2022264880A1/ja active Application Filing
- 2022-06-07 CN CN202280040620.0A patent/CN117441067A/zh active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010180896A (ja) * | 2009-02-03 | 2010-08-19 | Ntn Corp | 車輪用軸受シールおよびこれを備えた車輪用軸受装置 |
JP2013061048A (ja) | 2011-09-15 | 2013-04-04 | Nsk Ltd | シール付車輪支持用軸受ユニット |
JP2013072553A (ja) * | 2011-09-29 | 2013-04-22 | Nsk Ltd | シール付車輪支持用転がり軸受ユニット |
Also Published As
Publication number | Publication date |
---|---|
CN117441067A (zh) | 2024-01-23 |
JP2022190415A (ja) | 2022-12-26 |
EP4357631A1 (en) | 2024-04-24 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US7942585B2 (en) | Wheel bearing apparatus for a vehicle | |
EP1947355B1 (en) | Bearing device for wheel | |
JP2017125531A (ja) | 車輪用軸受装置 | |
CN211778585U (zh) | 轮毂单元轴承 | |
JP2006329320A (ja) | 車輪用軸受装置 | |
CN111512057A (zh) | 车轮用轴承装置 | |
JP2007187217A (ja) | 車輪用軸受装置 | |
WO2022264880A1 (ja) | 車輪用軸受装置 | |
WO2017026522A1 (ja) | 車輪用軸受装置 | |
JP6012803B2 (ja) | 車輪用軸受装置 | |
JP4844967B2 (ja) | 車輪用軸受装置 | |
JP2020106081A (ja) | ハブユニット軸受 | |
JP2015028372A (ja) | 車輪支持用転がり軸受ユニット | |
US10174786B2 (en) | Wheel bearing apparatus and its mounting structure | |
JP2013006487A (ja) | 車輪用軸受装置 | |
JP3601537B2 (ja) | 車輪支持用転がり軸受ユニット | |
JP6750322B2 (ja) | 車輪用軸受装置及び車輪用軸受装置の製造方法 | |
CN108026971B (zh) | 车轮用轴承装置 | |
JP2008296621A (ja) | 車輪用軸受装置 | |
WO2005040626A1 (ja) | 密封型転がり軸受 | |
JP6759594B2 (ja) | 車輪用軸受装置 | |
JP2018035907A (ja) | 車輪用軸受装置およびその製造方法 | |
JP2024065903A (ja) | ハブユニット軸受及びハブユニット軸受用の内輪の製造方法 | |
JP2015205649A (ja) | 軸受ユニット | |
JP6848350B2 (ja) | 車輪用軸受装置 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 22824872 Country of ref document: EP Kind code of ref document: A1 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 202280040620.0 Country of ref document: CN |
|
WWE | Wipo information: entry into national phase |
Ref document number: 18569371 Country of ref document: US |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2022824872 Country of ref document: EP |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
ENP | Entry into the national phase |
Ref document number: 2022824872 Country of ref document: EP Effective date: 20240115 |