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WO2018199422A1 - Ensemble palier de roue et palier de roue - Google Patents

Ensemble palier de roue et palier de roue Download PDF

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Publication number
WO2018199422A1
WO2018199422A1 PCT/KR2017/015090 KR2017015090W WO2018199422A1 WO 2018199422 A1 WO2018199422 A1 WO 2018199422A1 KR 2017015090 W KR2017015090 W KR 2017015090W WO 2018199422 A1 WO2018199422 A1 WO 2018199422A1
Authority
WO
WIPO (PCT)
Prior art keywords
wheel
hub
protrusions
bearing assembly
flange
Prior art date
Application number
PCT/KR2017/015090
Other languages
English (en)
Korean (ko)
Inventor
송재명
정연호
오하석
Original Assignee
주식회사 일진글로벌
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 주식회사 일진글로벌 filed Critical 주식회사 일진글로벌
Publication of WO2018199422A1 publication Critical patent/WO2018199422A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B27/00—Hubs
    • B60B27/0015—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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B27/00—Hubs
    • 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
    • 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
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/72—Sealings
    • F16C33/76—Sealings of ball or roller bearings

Definitions

  • the disclosed embodiments relate to a wheel bearing assembly and a wheel bearing of a wheel bearing assembly that can be applied to a wheel of a vehicle.
  • the chassis of the vehicle has wheel bearings that engage with the wheels of the vehicle.
  • the wheels are connected to the drive axle by wheel bearings.
  • the wheel is connected to the wheel support part of the driven axle or chassis by a wheel bearing.
  • a plurality of bolt holes are formed along the circumference of the wheel and the wheel bearing, and the wheel bolt and the wheel nut are fastened to each bolt hole.
  • a plurality of bolt holes are formed in the wheel along the circumference of the shaft, a tap hole corresponding to the bolt hole is formed in the wheel bearing, and the wheel bolt is formed in the tap hole through the bolt hole. Is fastened.
  • the conventional wheel and wheel bearing coupling structure uses a plurality of wheel bolts. Accordingly, in order to combine the wheel and the wheel bearing, a plurality of assembly processes are required and the assembly time is increased. In addition, the plurality of wheel bolts not only increases the weight of the wheel and the wheel bearing, but also increases the manufacturing cost. In addition, in order to form a bolt hole or a tap hole in the wheel bearing to which the wheel bolt is fastened, the wheel bearing must have a relatively large diameter, thereby increasing the weight of the wheel bearing. As such, the conventional coupling structure between the wheel and the wheel bearing is not suitable for achieving easy assembly and light weight.
  • the disclosed embodiments solve the problems of the prior art described above.
  • the disclosed embodiments provide a wheel bearing assembly and a wheel bearing therefor, wherein the wheel and the wheel bearing can be quickly combined through a simple structure.
  • a wheel bearing assembly includes an outer ring, a wheel hub that rotates relative to the outer ring about an axis, a plurality of rolling elements disposed between the outer ring and the wheel hub, and a wheel that is coupled to the wheel hub And a clamping member disposed on the shaft to clamp the wheel to the wheel hub.
  • the wheel hub includes a hub flange.
  • the hub flange is configured to extend from the outer circumferential surface of the wheel hub in the outer radial direction of the shaft to face the wheel and include a plurality of protrusions spaced apart from each other.
  • the wheel includes a plurality of protrusions arranged to engage with the plurality of protrusions.
  • the hub flange extends outward from the outer circumferential surface of the end of the wheel hub.
  • the wheel hub may have an annular surface located between the shaft and the hub flange and extending in the circumferential direction of the shaft.
  • the plurality of protrusions of the hub flange are disposed along the circumferential direction of the hub flange and in circumferential contact with each of the plurality of protrusions of the wheel.
  • the plurality of protrusions of the hub flange and the plurality of protrusions of the wheel have sides extending in the outer radial direction.
  • the wheel has a plurality of engagement grooves each formed between adjacent protrusions of the wheel, and the plurality of protrusions of the hub flange are respectively fitted into the plurality of engagement grooves.
  • the wheel may also have a flange facing surface extending in the circumferential direction of the shaft and opposing the hub flange, and the engagement groove may be concave from the flange facing surface.
  • the width of the plurality of projections of the hub flange and the width of the projection of the wheel can be expanded in the outer radius direction.
  • the wheel bearing assembly has a gap formed between the wheel hub and the wheel that is engaged by engagement between the protrusion of the wheel hub and the protrusion of the wheel.
  • the wheel bearing assembly includes a brake disc coupled to the outer circumference of the hub flange.
  • the hub flange has an inclined surface that is inclined relative to the axis to guide the wheel to the axis, the inclined surface being positioned between the shaft and the plurality of protrusions of the hub flange.
  • the wheel bearing assembly further comprises a portion of the axle penetrating the wheel hub and the wheel along the axis.
  • the clamping member is engaged to a portion of the axle to clamp the wheel to the wheel hub.
  • the wheel bearing assembly may further include a stop ring coupled to a portion of the axle to prevent movement of the clamping member.
  • the wheel hub has a spindle extending along the axis and penetrating the wheel.
  • the clamping member is fastened to the spindle to clamp the wheel to the wheel hub.
  • the wheel bearing assembly further includes a stop ring coupled to the spindle to prevent movement of the clamping member.
  • the wheel bearing assembly further includes a seal ring that seals the wheel and the wheel hub.
  • the plurality of projections of the hub flange and the plurality of projections of the wheel are located between the shaft and the seal ring.
  • Embodiments according to another aspect of the present disclosure relate to wheel bearings.
  • the wheel bearing of one embodiment includes an outer ring, a wheel hub that rotates relative to the outer ring about an axis, and a plurality of rolling elements disposed between the outer ring and the wheel hub.
  • the wheel hub includes a hub flange.
  • the hub flange is configured to extend from the outer circumferential surface of the wheel hub in the outer radial direction of the shaft to face the wheel upon engagement with the wheel.
  • the hub flange includes a plurality of protrusions disposed spaced apart from each other.
  • the hub flange has a plurality of flat surfaces each positioned between adjacent protrusions.
  • the wheel hub has an annular surface located between the shaft and the hub flange and extending in the circumferential direction of the shaft.
  • the wheel bearing further comprises a brake disc coupled to the outer periphery of the hub flange.
  • the wheel hub has a spindle extending along the axis and penetrating the wheel.
  • the wheel bearing further comprises a seal ring fitted to the wheel hub, wherein the plurality of protrusions of the hub flange are located between the shaft and the seal ring.
  • one clamping member clamps the wheel to the wheel hub in a center locking manner.
  • the wheel bearing assembly of one embodiment can have a simple coupling structure between the wheel and the wheel hub, light weight, low manufacturing cost.
  • wheel and wheel hub coupling using clamping members can be achieved by a few assembly processes.
  • the hub flange of the wheel hub meshes with the wheel so that the hub flange excludes parts for fastening the wheel bolts.
  • the diameter of the hub flange can be reduced, which can reduce the weight of the hub flange and the weight of the wheel bearing assembly.
  • the protrusions of the wheel hub are arranged along the edge of the hub flange and the arrangement of the protrusions of the wheel corresponds to the arrangement of the protrusions of the wheel hub. Since the projection of the hub flange is spaced from the shaft by a distance corresponding to the radius of the hub flange, the wheel bearing assembly can transmit greater driving force and torque to the wheel.
  • FIG. 1 is a cross-sectional view illustrating a wheel bearing assembly according to one embodiment and a wheel bearing according to one embodiment.
  • FIG. 2 is a cross-sectional perspective view showing a wheel bearing assembly according to one embodiment and a wheel bearing according to one embodiment.
  • FIG 3 is an exploded perspective view illustrating a wheel bearing assembly according to one embodiment and a wheel bearing according to one embodiment.
  • FIG. 4 is a cross-sectional perspective view of a wheel and a wheel hub according to one embodiment.
  • FIG. 5 is an enlarged perspective view of a part of the wheel hub illustrated in FIG. 4.
  • FIG. 6 is an enlarged perspective view of a part of the wheel illustrated in FIG. 4.
  • FIG. 6 is an enlarged perspective view of a part of the wheel illustrated in FIG. 4.
  • FIG. 7 schematically illustrates the engagement of the protrusions in a wheel bearing assembly according to one embodiment.
  • FIG. 8 is a partial cross-sectional view showing a wheel bearing assembly according to one embodiment and a wheel bearing according to one embodiment, showing a seal ring according to one embodiment.
  • FIG. 9 is a cross-sectional view showing a wheel bearing assembly according to another embodiment and a wheel bearing according to another embodiment.
  • FIG. 10 is a sectional perspective view showing a wheel bearing according to another embodiment.
  • Embodiments of the present disclosure are illustrated for the purpose of describing the technical spirit of the present disclosure.
  • the scope of the present disclosure is not limited to the embodiments set forth below or the detailed description of these embodiments.
  • a component when referred to as being "connected” or “connected” to another component, the component may be directly connected to or connected to the other component, or new It is to be understood that the connection may be made or may be connected via other components.
  • the direction indicator in the "outer radius direction” refers to a direction away from the axis in the radial direction with respect to the rotation axis of the rotating body, and the direction indicator in the "inner radius direction” is the opposite direction to the outer radius direction.
  • the direction indicators such as “outer axial direction” and “outer” used in the present disclosure mean the direction toward the wheel along the rotation axis of the rotating body, and the direction instructions such as “inner axial direction” and “inner” are The direction away from the wheel along the entire axis of rotation.
  • wheel bearing assemblies including wheel bearings (hereinafter referred to as wheel bearing assemblies) and wheel bearings.
  • the wheel bearing assembly according to one embodiment and the wheel bearing according to one embodiment may be applied to a driving wheel or a driven wheel of a vehicle.
  • a wheel bearing assembly according to one embodiment and a wheel bearing according to one embodiment may include a drive axle, a driven axle, an output shaft of a constant velocity joint included in such axle, or a chassis for supporting a wheel. Can be removably coupled to a component of the.
  • the wheel bearing assembly 10A includes a wheel bearing 1000A, a wheel 2000 coupled with the wheel bearing 1000A, and a wheel 2000 with the wheel bearing. It may include a clamping member 3000 for clamping to (1000A).
  • a wheel bearing 1000A includes an outer ring 1100, a wheel hub 1200, an outer ring 1100, and a wheel hub ( It may include a plurality of rolling elements 1310 disposed between the clouds 1200 or rolling.
  • the wheel hub 1200 rotates about the outer ring 1100 about an axis RA (eg, a rotation axis of the wheel and the wheel bearing).
  • the wheel bearing 1000A shown in FIGS. 1 to 8 includes an outer seal 1261 and an inner seal 1262 that prevent foreign matter from entering the space where the rolling element 1310 rolls or rotates. .
  • the outer ring 1100 has a cylindrical shape as a whole and is disposed concentrically with the shaft RA.
  • the outer ring 1100 has a pair of raceways 1110 with which the rolling element 1310 contacts the inner circumferential surface thereof.
  • the outer ring 1100 is fixed to a portion of the chassis and does not rotate.
  • the outer ring 1100 may be coupled to a knuckle that is a part of the chassis, but a part of the chassis to which the outer ring 1100 is coupled is not limited thereto. 1 to 3, the outer ring 1100 is coupled to a knuckle (not shown) by a plurality of bolt holes 1120 and bolts (not shown) passing through the bolt holes 1120 formed on the outer circumferential surface thereof. Can be.
  • the plurality of rolling elements 1310 are disposed between the inner circumferential surface of the outer ring 1100 and the outer circumferential surface of the wheel hub 1200.
  • the plurality of rolling elements 1310 includes two rows of rolling elements 1311 arranged along the circumferential direction CD of the axis RA.
  • the rolling element row 1311 is held by the retainer 1320 and disposed between the inner circumferential surface of the outer ring 1100 and the outer circumferential surface of the wheel hub 1200.
  • the rolling element rows 1311 may be in one row.
  • one rolling element 1310 in rolling element row 1311 comprises a ball, but in another embodiment, one rolling element in rolling element row 1311 It may include a roller.
  • a portion of the wheel hub 1200 is located in the outer ring 1100.
  • the wheel hub 1200 has a raceway surface 1211 on which the rolling element 1310 rotates. Some of the raceway surface 1211 is formed by the outer circumferential surface of the inner ring 1212 that fits at the end of the inner axial direction IA of the wheel hub 1200.
  • the inner ring 1212 is fixed to the outer circumferential surface of the wheel hub 1200 by the caulking portion 1213, and the caulking portion 1213 is located at the end of the inner axial direction IA of the wheel hub 1200 and is located on the shaft RA. It is bent in the outer radial direction OR.
  • each of the outer seal 1261 and the inner seal 1262 fits in an annular gap between the inner circumferential surface of the outer ring 1100 and the outer circumferential surface of the inner ring 1212.
  • each of the outer seal 1261 and the inner seal 1262 is coupled to each of a pair of annular frames fitted to the inner circumferential surface of the outer ring 1100 and the outer circumferential surface of the inner ring 1212, respectively. It may include a sealing member.
  • the pair of frames of the outer seal 1261 can be rotated relative to the outer ring 1100 and the wheel hub 1200, and the pair of frames of the inner seal 1262 are connected to the outer ring 1100 and the inner ring 1212. Can rotate relative.
  • wheel bearing assembly 10A may include a portion of axle 5000 that penetrates wheel hub 1200 and wheel 2000 along axis RA. 1 to 3, a portion of the axle 5000 includes an output shaft 5110 of the constant velocity joint 5100.
  • the wheel hub 1200 has a shaft bore 1221 through which the output shaft 5110 passes.
  • the output shaft 5110 has a spline groove 5111 and a spline key 5112 on its outer circumferential surface that extend along the axis RA and are alternately arranged in the circumferential direction.
  • the shaft bore 1221 has spline grooves 1222 and spline keys 1223 extending along the axis RA and alternately arranged on its inner circumferential surface.
  • wheel hub 1200 has an annular surface 1224 positioned concentric with axis RA and adjacent to axis RA at the end of outer axial direction OA of shaft bore 1221.
  • the annular surface 1224 extends in the circumferential direction CD of the axis RA.
  • the wheel hub 1200 has a hub flange 1230 configured to face the wheel 2000 and the outer axial direction OA upon engagement of the wheel 2000 and the wheel hub 1200.
  • the wheel hub 1200 has a hub flange 1230 at the end of the outer axial direction OA towards the wheel 2000.
  • An annular surface 1224 is located between the axis RA and the hub flange 1230.
  • the diameter of the hub flange 1230 is about the same as the diameter of the side facing the hub flange 1230 of the wheel 2000.
  • the hub flange 1230 protrudes and extends from the outer circumferential surface of the wheel hub 1200 in the outer radial direction OR at the end of the outer axial direction OA of the wheel hub 1200.
  • the hub flange 1230 extends in the circumferential direction (CD) concentric with the axis (RA) on the outer peripheral surface of the wheel hub (1200).
  • the hub flange 1230 may protrude from the outer circumferential surface of the wheel hub 1200 adjacent to the end of the wheel hub 1200.
  • the hub flange 1230 has a plurality of bolt holes 1232 on its outer circumference for coupling the brake disc 1400 and the hub flange 1230.
  • the bolt hole 1232 may be formed along the outer circumference of the hub flange 1230, and may be formed in a protrusion protruding from the edge of the inner axial direction IA of the hub flange 1230 in the outer radial direction OR.
  • the hub flange 1230 may have an inclined surface 1231 formed to incline with respect to the axis RA to guide the wheel 2000 to the axis RA.
  • the inclined surface 1231 is formed as a circumferential surface adjacent to the axis RA of the hub flange 1230, and is in contact with the annular surface 1224.
  • the inclined surface 1231 includes a curved surface extending in the circumferential direction CD, inclined with respect to the axis RA, and convex toward the axis RA.
  • the inclined surface 1231 may include a curved surface extending in the circumferential direction CD, inclined with respect to the axis RA, and concave toward the axis RA.
  • the hub flange 1230 is configured to face the wheel 2000 directly. Accordingly, the wheel hub 1200 and the wheel 2000 may be engaged with each other in the circumferential direction CD through the plurality of engagement portions provided in the wheel hub 1200 and the wheel 2000, respectively. The driving force or torque of the axle 5000 is transmitted to the wheel 2000 through engagement between the wheel 2000 and the wheel hub 1200.
  • This engaging portion may include a protrusion extending in the outer radial direction OR of the axis RA and having a tooth shape, a spline shape, or the like of the gear.
  • the protrusion provided on one of the wheel hub 1200 and the wheel 2000 may be fitted between the wheel hub 1200 and the adjacent protrusion provided on the other of the wheel 2000.
  • the protrusion provided on one of the wheel hub 1200 and the wheel 2000 may have a longer length in the outer radius direction OR than the protrusion provided on the other of the wheel hub 1200 and the wheel 2000.
  • the protrusion provided on the wheel hub 1200 and the protrusion provided on the wheel 2000 may have side surfaces for point contact and surface contact in the circumferential direction CD. At least some or all of these sides may extend in the outer radial direction OR. That is, at least part or all of this side surface may be located on an imaginary straight line in the outer radial direction OR extending from the axis RA.
  • the hub flange 1230 of the wheel hub 1200 is an engaging portion of the wheel hub, which is arranged in the circumferential direction CD and spaced apart from each other. It may be provided with a plurality of protrusions 1241 arranged. The plurality of protrusions 1241 may be engaged with the plurality of protrusions 2231 of the wheel 2000 corresponding to the plurality of protrusions 1241 in the circumferential direction CD.
  • the hub flange 1230 may have a plurality of flat surfaces 1233 respectively formed between the adjacent protrusions 1241. That is, the adjacent protrusions 1241 may be spaced apart from the flat surface 1233.
  • the hub flange 1230 may have a groove that is concave between adjacent protrusions 1241 and extends in the outer radial direction OR.
  • the plurality of protrusions 1241 are formed to protrude along the axis RA and extend in the outer radial direction OR from the surface of the hub flange 1230. .
  • An inclined surface 1231 is positioned between the shaft RA and the plurality of protrusions 1241 of the hub flange 1230.
  • the plurality of protrusions 1241 are arranged in an annular arrangement along the circumferential direction CD about the axis RA. That is, the plurality of protrusions 1241 are arranged along the circumferential direction of the hub flange 1230. In the rows of the projections, the adjacent projections 1241 are spaced apart from each other along the circumferential direction CD via the flat surface 1233.
  • the projection 1241 has a side surface 1242 extending in the outer radial direction OR, an inner end surface 1243 positioned at the end of the inner radius direction IR, and an outer end surface positioned at the end of the outer radial direction OR. 1244 and an axial face 1245 facing the wheel 2000 in the outer axial direction OA.
  • the protrusion 1241 contacts the side surface of the protrusion of the wheel 2000 corresponding to the protrusion 1241 at the side surface 1242 in the circumferential direction CD.
  • the protrusion 1241 may contact the surface of the wheel 2000 in the inner radial direction IR at the inner end surface 1243.
  • the width of the protrusion 1241 may extend toward the edge of the hub flange 1230 in the outer radial direction OR.
  • the side surface 1242 of the protrusion 1241 may be positioned on an imaginary straight line IL extending from the axis RA in the outer radial direction OR. That is, according to the example shown in FIG. 5, the width of the axial face 1245 is enlarged in the outer radial direction OR, and the axial face 1245 has a substantially parallelogram when viewed in the inner axial direction IA. It has a shape. As another example, the width between the side surfaces 1242 of the protrusion 1241 may be constant in the outer radial direction OR, and the axial face 1245 may have a rectangular shape.
  • the wheel bearing 1000A may include a brake disc 1400.
  • the brake disc 1400 has the shape of a disc with a circular hole in the center, the brake disc 1400 is coupled to the outer periphery of the hub flange 1230 at the edge of the circular hole, that is, the inner circumference. 1 to 3, the brake disc 1400 has a plurality of bolt holes 1410 located along its inner circumference.
  • the bolt hole 1410 may be formed in a protrusion protruding from the inner circumference of the brake disc 1400 in the inner radial direction IR.
  • the wheel 2000 may be coupled with the wheel bearing 1000A through the aforementioned engagement.
  • the wheel 2000 coupled to the wheel bearing 1000A may rotate about the axis RA.
  • the wheel 2000 has a wheel boss 2300 at its center.
  • the wheel 2000 has a plurality of arms 2200 extending from the wheel boss 2300 and a rim 2100 coupled to the tip of the arms 2200 at the inner circumferential surface.
  • the wheel boss 2300 and the plurality of arms 2200 may be separated.
  • the wheel 2000 may have a flange facing surface 2313 extending in the circumferential direction CD and opposed to the hub flange 1230 in the inner axial direction IA.
  • the wheel 2000 may have engagement portions corresponding to the plurality of protrusions 1241 of the wheel hub 1200 on the flange facing surface 2313.
  • the wheel boss 2300 has a shape protruding along the axis RA from the ends of the arms 2200.
  • the wheel boss 2300 has a smaller diameter than the cylindrical portion 2311 and the cylindrical portion 2311 and has a protrusion 2312 protruding from the cylindrical portion 2311 in the inner axial direction IA.
  • the flange facing surface 2313 is positioned perpendicular to the axis RA at an end in the inner axial direction IA of the cylindrical portion 2311 between the cylindrical portion 2311 and the protrusion 2312.
  • the flange facing surface 2313 is an annular surface extending in the circumferential direction CD about the axis RA.
  • the diameter of the flange facing surface 2313 may be the same as the diameter of the hub flange 1230.
  • the wheel boss 2300 also has a shaft bore 2321 extending along the axis RA and through which a portion of the axle 5000 or a portion of the wheel hub 1200 penetrates.
  • the wheel boss 2300 has a circumferential surface 2314 located on the side of the protrusion 2312 and an annular surface 2315 located at the end of the inner axial direction IA of the protrusion 2312.
  • the wheel boss 2300 also has a circular concave nut seat 2322 on the opposite side of the protrusion 2312.
  • the clamping member 3000 is seated on the nut seat 2232.
  • the circumferential surface 2314 has a shape complementary to the shape of the inclined surface 1231.
  • Peripheral surface 2314 comprises a curved surface that is convex toward axis RA.
  • the annular surface 2315 has a diameter approximately equal to the annular surface 1224 of the wheel hub 1200, and extends along the circumference of the shaft bore 2321.
  • the wheel boss 2300 may not include the protrusion 2312.
  • the wheel hub 1200 may not have an inclined surface 1231, and the hub flange 1230 is perpendicular to the axis RA at the end of the outer axial direction OA of the wheel hub 1200. Can protrude.
  • the protrusion 2312 may be guided along the inclined surface 1231 to the axis RA.
  • wheel 2000 may be positioned relative to wheel hub 1200 such that shaft bore 2321 and shaft bore 1221 are coaxially aligned. That is, the wheel hub 1200 has an inclined surface 1231 and an annular surface 1224, and the wheel 2000 has a circumferential surface 2314 and an annular surface 2315 corresponding in shape to the protrusions 2312. Circumferential surface 2314 may be guided to shaft RA by inclined surface 1231 such that wheel 2000 may be positioned on shaft RA with respect to wheel hub 1200.
  • the wheel 2000 may have a plurality of protrusions 2331 arranged to engage the plurality of protrusions 1241 of the hub flange 1230.
  • the plurality of protrusions 2331 may be arranged in an annular arrangement along the circumferential direction CD. Also, in the rows of the projections 2331, adjacent projections 2331 may be spaced along the circumferential direction CD.
  • the protrusion 2331 is fitted between the adjacent protrusions 1241 of the wheel hub 1200.
  • the number of protrusions 2331 may be the same as the number of protrusions 1241.
  • the projection 2331 is located along the circumference of the flange facing surface 2313 at the flange facing surface 2313.
  • the wheel 2000 has a plurality of engagement grooves 2335 respectively positioned between adjacent protrusions 2331 at the flange facing surface 2313, and adjacent engagements.
  • the grooves 2335 form one protrusion 2331.
  • the protrusion 2331 may be formed to protrude in the inner axial direction IA on the flange facing surface 2313. Adjacent protrusions 2331 are spaced apart from each other in the circumferential direction CD via one engagement groove 2335.
  • the wheel 2000 is provided with the engaging grooves 2335 and the projections 2331 alternately arranged in an annular arrangement in the circumferential direction CD on the flange facing surface 2313. Accordingly, the plurality of protrusions 1241 of the flange 1200 are fitted into the plurality of engagement grooves 2335, respectively.
  • the flange facing surface 2313 has a circumferential groove 2316 in contact with the projection 2331 and the engagement groove 2335.
  • the protrusion 2331 and the plurality of engagement grooves 2335 are arranged along the circumferential groove 2316, and the circumferential groove 2316 communicates with each of the engagement grooves 2335.
  • the engagement groove 2335 is concave in the outer axial direction OA from the flange facing surface 2313, and a part of the flange facing surface 2313 between the adjacent engagement grooves 2335 is part of the surface of the projection 2331.
  • the protrusion 2331 has a shape complementary to the shape of the space between the adjacent protrusions 1241
  • the engagement groove 2335 has a shape complementary to the shape of the protrusion 1241.
  • the shape of the engagement groove 2335 at least partially corresponds to the shape of the projection 1241
  • the shape of the projection 2331 at least partially corresponds to the shape of the space between the projections 1241.
  • the projection 2331 has a pair of side surfaces 2332 extending in the outer radial direction OR and an outer end surface 2333 at the end of the outer radial direction OR. And an axial face 2334 facing the hub flange 1230 in the inner axial direction IA.
  • the width of the protrusion 2331 is enlarged in the outer radial direction OR. That is, when viewing the projection 2331 in the outer axial direction OA, the axial face 2334 has a parallelogram.
  • Engaging groove 2335 has an inner end surface 2335 which is at the end of medial radial direction IR and an axial face 2336 that forms its bottom and faces hub flange 1230 in inner axial direction IA.
  • the shape of the axial face 2336 corresponds to the shape of the axial face 1245 of the projection 1241.
  • the inner end surface 1243 of some of the protrusions 1241 may contact the inner end surface 2335 of the engagement groove 2335 in the inner radial direction IR.
  • one of the plurality of protrusions 1241 of the wheel hub 1200 and the plurality of protrusions 2331 of the wheel 2000 may have a longer length in the outer radius direction than the other.
  • the length in the outer radial direction OR of the projection 2331 and the engaging groove 2335 is longer than the length in the outer radial direction OR of the projection 1241. Accordingly, when the wheel 2000 is coupled to the wheel hub 1200, even if the wheel 2000 is slightly rotated about the axis RA with respect to the wheel hub 1200, the wheel 2000 may be wheel hub ( 1200 can be easily engaged in the circumferential direction CD and can be easily positioned in the axis RA.
  • the projections 2331 are arranged in annular rows.
  • the projections 2331 may be arranged in a plurality of arcuate arrangements around the axis RA.
  • at least a part of the plurality of protrusions 1241 may be fitted to the plurality of protrusions 2331.
  • a plurality of protrusions 1241 may be formed in the hub flange 1230 in a plurality of arcuate arrangements.
  • the wheel bearing assembly 10A is engaged with the wheel hub 1200 and the wheel 2000 by engagement between the protrusion 1241 of the wheel hub 1200 and the protrusion 2331 of the wheel 2000.
  • the gaps 1271 and 1272 may be formed between the wheel hub 1200 and the wheel 2000. 1, 2, and 4, when the wheel hub 1200 and the wheel 2000 are coupled, the gap 1271 includes the inclined surface 1231 and the wheel 2000 of the hub flange 1230. Is formed between the circumferential surface 2314.
  • the gap 1271 is inclined with respect to the axis RA and extends in the circumferential direction CD. According to the example illustrated in FIGS.
  • the gap 1272 is engaged with the protrusion 1241 of the wheel hub 1200 and the wheel 2000. It is formed between the grooves 2335 and between the projections 2331 of the wheel 2000 and the flat surface 1233 of the wheel hub 1200. Due to the gap 1272, the axial face 1245 of the protrusion 1241 and the axial face 2336 of the engagement groove 2334 are spaced along the axis RA, and the axial face of the protrusion 2331 ( 2334 and flat surface 1233 of hub flange 1230 are spaced along axis RA.
  • the projections 1241, the flat surface 1233, the projections 2331 and the engagement grooves 2335 need not be formed under strict dimensional tolerances, and the projections 1241 and the projections 2331 are The engagement of the liver can be done smoothly.
  • the clamping member 3000 of the wheel bearing assembly 10A is disposed on an axis RA and clamps the wheel 2000 to the wheel hub 1200 along the axis RA.
  • the clamping member 3000 includes one clamping nut 3100 that is fastened to a portion of the axle 5000 or to a portion of the wheel hub 1200.
  • the output shaft 5110 penetrating the wheel hub 1200 and the wheel 2000 along the axis RA has a screw on the outer circumferential surface of the outer end portion.
  • the clamping nut 3100 is fastened by screwing to an outer end of the output shaft 5110, thereby tightly coupling the wheel 2000 to the wheel hub 1200. That is, the wheel bearing assembly 10A of the embodiment has a center locking structure in which locking is performed along the axis RA, and the wheel 2000 is connected to the wheel hub 1200 by one clamping nut 3100. Combined along RA).
  • the clamping nut 3100 has a washer 3110 at its outer end.
  • the clamping member 3000 may include a clamping bolt.
  • the axle e.g., output shaft 5110
  • the axle may extend inwardly along its axis RA from its end and have a threaded bolted hole, and the clamping bolt is fastened to the bolted hole to provide a wheel ( 2000 is tightly coupled to the wheel hub 1200 along the axis RA.
  • the wheel bearing assembly 10A of one embodiment may include a stop ring 3200 that prevents movement of the clamping member 3000 that clamps the wheel 2000.
  • the stop ring 3200 may include a C-shaped elastic ring.
  • An annular ring groove 5113 is formed at the end of the output shaft 5110. The stop ring 3200 may snap to the ring groove 5113 to hold the clamping nut 3100 that clamps the wheel 2000 to the wheel hub 1200 in place.
  • the wheel bearing assembly 10A may include a seal ring 4000 configured to seal the gap between the wheel 2000 and the wheel hub 1200.
  • the projections 1241 and 2233 are located between the axis RA and the seal ring 4000, and the seal ring 4000 is in the circumferential direction CD. Extend.
  • the seal ring 4000 may be elastically deformed in the inner radial direction IR or the outer radial direction OR.
  • the seal ring 4000 has an annular sealing portion 4100 and a fixing portion 4200 extending in the circumferential direction (CD) along the sealing portion 4100.
  • the hub flange 1230 of the wheel hub 1200 has an annular seal groove 1234 into which the seal ring 4000 is fitted, and the wheel 2000 has an annular seal contacting the seal ring 4000.
  • a groove 2317 As shown in Fig. 8, the cross-sectional shape of the fixing portion 4200 has a dovetail shape, and the seal groove 1234 is formed as a dovetail groove. 2317 is in contact with a portion of the seal 4100 along the circumferential direction CD.
  • the force along the axis RA is sealed.
  • the seal ring 4000 may be applied to the ring 4000 and the seal ring 4000 may be compressed in the inner axial direction IA. Accordingly, the clamping force of the clamping member 3000 may seal the seal 4100 to the seal groove 2317. wheat It can be attached.
  • FIGS. 9 and 10 show a wheel bearing assembly 10B according to another embodiment and a wheel bearing 1000B according to another embodiment.
  • the wheel bearing assembly 10B and the wheel bearing 1000B shown in FIGS. 9 and 10 may be applied to the driven wheel.
  • the wheel bearing 1000B has a configuration similar to that of the wheel bearing 1000A described above.
  • the wheel hub 1200 of the wheel bearing 1000B may have a spindle 1250 penetrating the wheel boss 2300 of the wheel 2000 instead of the shaft bore 1221.
  • spindle 1250 extends along axis RA and penetrates shaft bore 2321 of wheel boss 2300.
  • the fixed end of the spindle 1250 is connected to the toroidal surface 1224.
  • the free end of the spindle 1250 is threaded along its circumference.
  • the clamping nut 3100 (an example of the clamping member) is fastened to the free end of the spindle 1250 to clamp the wheel 2000 to the wheel hub 1200.
  • a ring groove 1251 is formed along the periphery of the free end of the spindle 1250, and the stop ring 3200 is coupled to the ring groove 1251.
  • the clamping nut 3100 may be prevented from being separated along the spindle 1250 by the stop ring 3200.
  • the above-described protrusion 1241 may be provided on the wheel 2000, for example, on the flange opposing surface 2313, and the corresponding groove 2335 and the above-described protrusion 2331 may have a hub flange ( 1230 may be provided.
  • the side surface 1242 of the above-described protrusion 1241 and the side surface of the above-described protrusion 2331 may be at a predetermined angle with respect to the imaginary line IL extending in the outer radial direction OR. Can be tilted.
  • one clamping member 3000 is coupled to the output shaft 5100 or spindle 1250 along the axis RA to clamp the wheel 2000 to the wheel hub 1200. That is, the clamping member 3000 clamps the wheel 2000 to the wheel hub 1200 by the center locking structure. As such, by arranging the hub flange 1230 of the wheel hub 1200 to face the wheel 2000, the wheel 2000 and the wheel hub 1200 are engaged with each other, and finally, the one clamping member 3000.
  • the furnace wheel 2000 and the wheel hub 1200 are fixed along the inner axial direction IA. Therefore, the wheel 2000 and the wheel hub 1200 are also fixed in the inner radius direction IR and the outer radius direction OR.
  • the clamping member 3000 eliminates the use of a plurality of wheel bolts as in the prior art. Thus, light weight, low manufacturing cost and low number of assembly processes are achieved. In addition, since a plurality of wheel bolts are not used, a portion for fastening the wheel bolts in the hub flange 1230 and the wheel 2000 is unnecessary, and the hub flange 1230 and the wheel 2000 may be reduced in weight.
  • the wheel 2000 may be coupled to both the wheel hub for the driving wheel shown in FIG. 1 and the wheel hub for the driven wheel shown in FIG. 9. That is, the wheel bearing assemblies 10A and 10B of one embodiment may be selectively applied to the drive wheels and the driven wheels.
  • the protrusions 1241 of the wheel hub 1200 are arranged along the edge of the hub flange 1230, and the position of the protrusions 2331 of the wheel 2000 corresponds to the position of the protrusions 1241. . Since the projection 1241 and the projection 2331 are spaced apart from the shaft RA by a distance corresponding to the radius of the hub flange 1230, the wheel bearing assemblies 10A and 10B transmit more driving force and torque to the wheel 2000. I can deliver it.
  • the brake disc 1400 is coupled to the outer circumference of the hub flange 1230 at its inner circumference. That is, the brake disc 1400 is not coupled to the wheel 2000 but coupled to the hub flange 1230, so that the brake disc 1400 may be provided to the wheel bearings 1000A and 1000B in a simple assembly and structure.
  • the seal ring 4000 prevents moisture or foreign matter from entering the protrusions 1241 and the protrusions 2331. Accordingly, the wheel bearing assemblies 10A and 10B can prevent corrosion of protrusions that can be caused by moisture or foreign matter, deterioration of engagement and noise generation.
  • the side surface 1242 of the protrusion 1241 and the side surface 2332 of the protrusion 2331 extend in the outer radial direction OR, and one of the protrusions 1241 and the protrusion 2331 is larger than the other side. long.
  • the protrusions 1241 and 3233 may not rotate the wheels 2000 even if the wheels 2000 are only slightly rotated about the axis RA. Can be fitted to each other while positioning.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rolling Contact Bearings (AREA)

Abstract

L'invention concerne un ensemble palier de roue qui est appliqué à une roue motrice ou à une roue menée. L'ensemble palier de roue comprend : une cage extérieure ; un moyeu de roue qui tourne autour d'un arbre par rapport à la cage extérieure ; une pluralité de corps de roulement disposés entre la cage extérieure et le moyeu de roue ; une roue couplée au moyeu de roue ; et un élément de serrage disposé sur l'arbre et serrant la roue au moyeu de roue. Le moyeu de roue comprend un flasque de moyeu. Le flasque de moyeu comprend une pluralité de parties saillantes qui sont configurées pour s'étendre depuis une surface circonférentielle externe du moyeu de roue dans la direction radiale externe de l'arbre et pour faire face à la roue, les parties saillantes étant disposées espacées les unes des autres. La roue comprend une pluralité de parties saillantes qui sont disposées de façon à venir en prise avec la pluralité de parties saillantes ci-dessus.
PCT/KR2017/015090 2017-04-28 2017-12-20 Ensemble palier de roue et palier de roue WO2018199422A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020170055507A KR101935420B1 (ko) 2017-04-28 2017-04-28 휠 베어링 어셈블리 및 휠 베어링
KR10-2017-0055507 2017-04-28

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WO2018199422A1 true WO2018199422A1 (fr) 2018-11-01

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KR102580864B1 (ko) * 2018-11-30 2023-09-21 주식회사 일진글로벌 휠 베어링 조립체
KR102720221B1 (ko) * 2019-04-19 2024-10-22 주식회사 일진글로벌 휠 장착 구조가 개선된 휠베어링
KR102547357B1 (ko) * 2022-07-04 2023-06-23 한국전기연구원 냉각 구조가 개선된 전기기계

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US20100158423A1 (en) * 2005-10-15 2010-06-24 Schaeffler Kg Bearing unit, preferably, wheel bearing unit for a motor vehicle, and method for producing a bearing unit
US20130076107A1 (en) * 2010-06-30 2013-03-28 Volvo Group North America, Llc Wheel cover and mounting device
KR20150122539A (ko) * 2014-04-23 2015-11-02 주식회사 일진글로벌 구동 휠 베어링 및 그 제조방법
KR20160142174A (ko) * 2015-06-02 2016-12-12 주식회사 일진글로벌 휠 허브, 브레이크 디스크, 및 이를 구비한 휠 베어링 조립체

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KR20000016580U (ko) * 1999-02-04 2000-09-25 정몽규 상용차의 휠너트 풀림 방지구조
US20100158423A1 (en) * 2005-10-15 2010-06-24 Schaeffler Kg Bearing unit, preferably, wheel bearing unit for a motor vehicle, and method for producing a bearing unit
US20130076107A1 (en) * 2010-06-30 2013-03-28 Volvo Group North America, Llc Wheel cover and mounting device
KR20150122539A (ko) * 2014-04-23 2015-11-02 주식회사 일진글로벌 구동 휠 베어링 및 그 제조방법
KR20160142174A (ko) * 2015-06-02 2016-12-12 주식회사 일진글로벌 휠 허브, 브레이크 디스크, 및 이를 구비한 휠 베어링 조립체

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KR101935420B1 (ko) 2019-01-07

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