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WO2019235662A1 - Wheel bearing and wheel bearing assembly - Google Patents

Wheel bearing and wheel bearing assembly Download PDF

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Publication number
WO2019235662A1
WO2019235662A1 PCT/KR2018/006489 KR2018006489W WO2019235662A1 WO 2019235662 A1 WO2019235662 A1 WO 2019235662A1 KR 2018006489 W KR2018006489 W KR 2018006489W WO 2019235662 A1 WO2019235662 A1 WO 2019235662A1
Authority
WO
WIPO (PCT)
Prior art keywords
wheel
hub
teeth
cross
sectional
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/KR2018/006489
Other languages
French (fr)
Korean (ko)
Inventor
송재명
금동호
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Iljin Global Co Ltd
Original Assignee
Iljin Global Co Ltd
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 Iljin Global Co Ltd filed Critical Iljin Global Co Ltd
Priority to KR1020207034874A priority Critical patent/KR102595002B1/en
Priority to PCT/KR2018/006489 priority patent/WO2019235662A1/en
Publication of WO2019235662A1 publication Critical patent/WO2019235662A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • B60B27/0073—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
    • 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
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B2380/00—Bearings
    • B60B2380/10—Type
    • B60B2380/12—Ball bearings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B2900/00—Purpose of invention
    • B60B2900/50—Improvement of
    • B60B2900/511—Sealing

Definitions

  • the present invention relates to a wheel bearing and a wheel bearing assembly for rotatably mounting and supporting a wheel of a vehicle on a vehicle body, and more particularly, to improve the fastening structure between the wheel bearing and the wheel and to assemble the wheel bearing assembly.
  • the present invention relates to a wheel bearing and a wheel bearing assembly configured to shorten the process time and reduce the weight of the wheel bearing assembly while improving the sealing property of the gap formed between the wheel and the wheel bearing coupling portion.
  • a conventional vehicle wheel bearing (so-called third generation type) conventionally used is illustrated by way of example.
  • a wheel bearing for a vehicle includes a non-rotating element 20 (outer ring) in which a rotating element 10 (wheel hub) on which a wheel is mounted is fixed to a vehicle body (eg, a chassis) of the vehicle. It is connected to the through the rolling element 30, it is configured to support the wheel mounted on the rotating element 10 (wheel hub) in a rotatable state to the vehicle body of the vehicle.
  • the wheel bearing for the vehicle is a wheel hub through the hub flange 12 formed on the outer circumferential surface of the wheel hub 10 is fixed to the vehicle body through the mounting flange 22 formed on the outer circumferential surface of the outer ring 20 10) the wheel is mounted, wherein the coupling between the wheel and the wheel hub 10 is performed by fastening the hub bolt 40 to a plurality of through holes formed in the hub flange 12 of the wheel hub 10. Will be.
  • the present invention is to solve the above-mentioned conventional problems, by improving the fastening structure between the wheel and the wheel bearing by engaging engagement through the wheel hub of the wheel bearing and the cross-sectional teeth formed on the wheel without using a plurality of hub bolts It can be stably mounted on the wheel bearing, which can shorten the process time and reduce the weight, and the wheel bearing is configured to faithfully seal the gap between the wheel and the wheel hub by the cross-sectional tooth structure through the sealing member. It is an object to provide a wheel bearing assembly.
  • a wheel bearing used for rotatably mounting a wheel of a vehicle to a vehicle body.
  • a wheel bearing includes a wheel hub that is mounted with a wheel and rotates with the wheel, one or more inner wheels that are press-fitted to the wheel hubs, and a radial outer side of the one or more inner wheels, An outer ring having a mounting flange mounted thereon and one or more rolling elements mounted between the one or more inner and outer rings, the wheel hub comprising a hub flange extending radially outward, the hub flange being located on the wheel side
  • the cross-sectional teeth are provided in the cross section and may be configured to be tooth-coupled to the corresponding cross-sectional teeth formed in the wheel.
  • the cross-sectional teeth provided on the hub flange of the wheel hub is configured such that a plurality of teeth (tooth) are arranged spaced apart in the circumferential direction, the radially outer side of the cross-sectional teeth of the hub flange and the hub flange It may be configured to be provided with a sealing member for sealing a gap formed between the wheels.
  • the hub flange of the wheel hub has a mounting portion for mounting the sealing member on the radially outer side of the cross-sectional teeth, the mounting portion is increased in diameter toward the wheel side of the bottom surface on which the sealing member is mounted It may be formed in a shape.
  • the mounting portion may be formed in an inclined surface shape in which the diameter of the bottom surface on which the sealing member is mounted increases toward the wheel side.
  • the sealing member may be composed of a wiring portion formed in a ring shape with a wire having a circular cross section and an elastic portion surrounding the wiring portion.
  • the surface in contact with the mounting portion in the elastic portion of the sealing member may be formed in a shape corresponding to the contact surface of the mounting portion.
  • the wiring part may be formed in a ring-shaped structure in which part is open, and the open part of the wiring part may be configured to be connected by welding.
  • the teeth of the cross-sectional teeth provided on the hub flange of the wheel hub may be formed to have a smaller volume than the teeth of the corresponding cross-sectional teeth formed on the wheel.
  • the teeth of the cross-sectional teeth provided on the hub flange of the wheel hub may be configured to have a volume ratio of 1: 1.2 to 1: 1.4 with the teeth of the corresponding cross-sectional teeth provided on the wheel.
  • the cross-sectional teeth provided on the hub flange of the wheel hub may be formed to have a pitch circle diameter of 90mm or more and 130mm or less.
  • a wheel bearing assembly having the above-described wheel bearing may be provided.
  • the wheel bearing assembly according to an embodiment of the present invention may further include a wheel coupled to the wheel hub of the wheel bearing.
  • the wheel has a corresponding cross-sectional tooth that is tooth-coupled with a cross-sectional tooth provided in the hub flange of the wheel hub, and the corresponding cross-sectional tooth provided in the wheel has a plurality of teeth in a circumferential direction. It may be configured to be spaced apart.
  • the cross-sectional teeth provided on the wheel may be formed to have a pitch circle diameter of 90mm or more and 130mm or less.
  • the wheel bearing and the wheel bearing assembly according to the embodiment of the present invention are configured to be engaged by engaging the wheel bearing and the wheel through a face-spline, so that one clamping member (for example, a fastening nut at the center) is provided. By simply tightening), the wheel can be mounted on the wheel hub of the wheel bearing, which can reduce the process time and reduce the weight of the product.
  • one clamping member for example, a fastening nut at the center
  • the wheel bearing and the wheel bearing assembly according to an embodiment of the present invention is provided with a sealing member on the radially outer side of the cross-sectional teeth used for coupling between the wheel and the wheel bearing between the wheel and the wheel bearing by the cross-sectional teeth. It is possible to effectively improve the sealability of the wheel bearing assembly by closing the gap to be generated.
  • FIG. 1 and 2 exemplarily illustrate a structure of a wheel bearing for a vehicle which is conventionally used.
  • FIG. 3 exemplarily shows a structure of a wheel bearing assembly according to an embodiment of the present invention.
  • FIG. 4 exemplarily illustrates a cross-sectional structure of a wheel bearing assembly according to an embodiment of the present invention.
  • FIG. 5 exemplarily shows a coupling structure of a hub flange portion of an assembly of a wheel bearing according to an embodiment of the present invention.
  • FIG. 6 exemplarily shows a structure of a cross-sectional tooth portion provided in the hub flange of the wheel hub in the assembly of the wheel bearing according to the embodiment of the present invention.
  • FIG. 7 exemplarily shows a structure of a corresponding cross-sectional tooth portion provided in a wheel in an assembly of a wheel bearing according to an embodiment of the present invention.
  • FIG. 8 exemplarily shows a structure of a wiring part constituting a sealing member of a wheel bearing assembly according to an embodiment of the present invention.
  • FIG. 9 exemplarily shows an embodiment in which a wheel bearing assembly according to an embodiment of the present invention is applied to a drive wheel of a vehicle.
  • FIG. 10 exemplarily shows another embodiment in which a wheel bearing assembly according to an embodiment of the present invention is applied to a drive wheel of a vehicle.
  • a wheel bearing assembly 100 according to an embodiment of the present invention is illustrated by way of example.
  • the wheel bearing assembly 100 is a wheel bearing rotatably mounted to support the wheel (wheel) to the vehicle body (eg chassis) of the vehicle ( 200 and the wheel 300 and the brake disk 400 coupled to one side of the wheel bearing may be included.
  • the wheel bearing 200 may be formed in a structure similar to that of a general vehicle wheel bearing.
  • the wheel bearing assembly 100 is a wheel hub 210 (rotating element), outer ring 220 (non-rotating element), inner ring 230, rolling element 240 as shown in the figure
  • the wheel bearing 200 may be configured as, for example.
  • the wheel hub 210 is a member to which the wheel 300, which will be described later, is mounted.
  • the wheel hub 210 is formed in a substantially cylindrical shape extending along the axial direction, and a hub flange 212 is provided near the wheel side end of the wheel hub 210. Can be.
  • the hub flange 212 may be formed to extend radially outwardly of the wheel hub 210 to be used to mount the wheel 300 and / or the brake disc 400 described later.
  • the vehicle body side end of the wheel hub 210 is provided with a stepped portion 214 is reduced in diameter may be configured to mount the inner ring 230 to the wheel hub 210, a portion of the outer peripheral surface of the wheel hub 210
  • the track wheel (inner track wheel) that the rolling element 240 contacts may be formed.
  • the outer ring 220 may be configured to include a mounting flange 222 used for coupling to a vehicle body (eg, a chassis) on an outer circumferential surface thereof and a track ring to which the rolling element 240 contacts the inner circumferential surface thereof.
  • the track wheel (outer track wheel) formed on the inner circumferential surface of the outer ring 220 cooperates with the track wheel (inner track wheel) formed on the wheel hub 210 and / or the inner ring 230 to form a rolling element that is a rolling element between the track wheels. 240 to accommodate and support.
  • the inner ring 230 is mounted on one side of the wheel hub 210 to form an inner race wheel of the rolling element 240.
  • the inner ring 230 may include a raceway (inner raceway) contacting the rolling element 240 on the outer circumferential surface, and inserted into the stepped portion 214 formed at the vehicle body side end portion of the wheel hub 210.
  • the end of the wheel hub 210 is plastically deformed radially outward as shown in FIG. 5 or by fastening a nut or the like to the vehicle body side end of the wheel hub 210 so as to be seated on the wheel hub 210.
  • the rolling element 240 is disposed between the track wheel (inner track wheel) formed on the wheel hub 210 and / or the inner ring 230 and the track wheel (outer track wheel) formed on the outer ring 220, and the wheel is mounted thereon.
  • the wheel hub 210 performs a function of rotatably supporting the outer ring 220 is fastened to the vehicle body.
  • the wheel 300 may be mounted and fixed to the hub flange 212 of the wheel hub 210.
  • the wheel 300 used in the wheel bearing assembly 100 according to an embodiment of the present invention may be formed in a structure similar to that of a general vehicle wheel.
  • the wheel 300 includes a wheel boss 310 positioned at the center and a plurality of wheel arms 320 extending radially outward from the wheel boss 310 and wheel wheels 330 connected to ends of the wheel arms 320. ) And the like.
  • the wheel 300 described above may be coupled to the hub flange 212 of the wheel hub 210 by engaging engagement through the cross-sectional teeth.
  • the wheel bearing 200 according to an embodiment of the present invention is a cross-sectional tooth in which a plurality of teeth 215 are spaced apart along the circumferential direction on one side end surface (section located at the wheel side) of the wheel hub 210.
  • Through the wheel 300 may be configured to be fastened to the wheel hub 210 of the wheel bearing.
  • the cross-sectional teeth provided on the hub flange 212 of the wheel bearing according to an embodiment of the present invention and the corresponding cross-sectional teeth provided on the wheel 300 are exemplarily illustrated.
  • the cross-sectional teeth provided on the hub flange 212 and the corresponding cross-sectional teeth provided on the wheel 300 are arranged with a plurality of teeth spaced apart in a circumferential direction about a central axis.
  • 6 may be formed in a shape (for example, a center line dividing the teeth in half as shown in FIGS. 6 and 7 may be configured to intersect at the central axis), and the teeth are axially projected from the wheel hub and the wheel. It can be formed as.
  • the teeth 215 of the cross-sectional teeth provided on the hub flange 212 and the teeth 315 of the corresponding cross-sectional teeth provided on the wheel 300 may be formed to engage with each other for smooth engagement.
  • the teeth 215 of the cross-sectional teeth provided on the hub flange 212 and the teeth 315 of the corresponding cross-sectional teeth provided on the wheel 300 are closer to the central axis as shown in FIGS. 6 and 7. It can be formed in a structure in which the distance between both sides of the narrower (structure having a trapezoidal shape when viewed in the axial direction).
  • the cross-sectional teeth are not limited to the shapes shown in the drawings, and may be formed in any of various shapes as long as both cross-sectional teeth can be engaged with each other.
  • the cross-sectional teeth may be configured such that both sides of the teeth are formed parallel to each other (a structure having a rectangular shape when viewed in the axial direction).
  • the cross-sectional teeth of the hub flange 212 of the wheel bearing 200 have the volume of the teeth 315 of the corresponding cross-sectional teeth of the tooth 215 provided on the wheel 300. It can be formed to have a smaller volume.
  • the wheel hub 210 of a vehicle wheel bearing is formed of a material such as carbon steel having a relatively high strength
  • the wheel 300 coupled to the wheel hub is formed of a material such as aluminum alloy having a relatively low strength. Will be.
  • the teeth 215 of the cross section teeth provided in the wheel hub having a relatively high strength such as the wheel bearing assembly according to the embodiment of the present invention, are provided with the teeth of the cross section teeth provided in the wheel having a relatively low strength (The smaller volume compared to 315) counteracts the above-mentioned problems that may arise due to the difference in strength between the two members being joined and allows the cross-sectional teeth to be more stable and operate for longer periods of time.
  • the teeth 215 of the cross-sectional teeth provided on the wheel hub correspond to the wheels provided in consideration of the characteristics of the materials used to manufacture the wheel hubs and wheels coupled thereto for the vehicle wheel bearings. It is preferably formed to have a volume ratio between the teeth 315 of the cross-sectional teeth and in the range of 1: 1.2 to 1: 1.4. If the volume ratio between the cross-sectional teeth provided on the wheel hub and the teeth of the corresponding cross-sectional teeth provided on the wheel is too large, the teeth of the cross-sectional teeth provided on the wheel hub are formed too small, which may cause problems in the coupling force of the teeth.
  • the volume ratio is too small, the difference in strength between the wheel hub and the material of the wheel may not be sufficiently offset so that the corresponding cross-sectional teeth of the wheel may be easily damaged. It may be desirable to form in a range of volume ratios.
  • the tooth shape of the wheel hub and the cross-sectional teeth provided on the wheel is not necessarily limited to the volume ratio of the above-described range, and a person skilled in the art may determine the volume ratio in consideration of the concrete material of the wheel hub and the wheel and the detailed structure of the wheel bearing. It is also possible to modify it suitably.
  • the cross-sectional teeth provided on the wheel hub 210 and the cross-sectional teeth provided on the wheel 300 are conventional vehicle wheel bearing assemblies (see FIGS. 1 and 2) for smooth rotational force transmission.
  • the hub bolt is preferably formed to correspond to the position where it was mounted.
  • the wheel bearing assembly according to an embodiment of the present invention is such that the pitch circle diameters (PCD hub shown in FIG. 6 and PCD wheel shown in FIG. 7) of the cross-sectional teeth provided on the wheel hub and the wheel are 90 mm or more and 130 mm or less. It is preferable to form.
  • the cross-sectional teeth provided on the wheel hub and the wheel are formed too close to the central axis, the diameter of the fastening nut used for coupling the constant velocity joint to the wheel bearing is too small, and thus a stable coupling force cannot be provided between the constant velocity joint and the wheel bearing.
  • the cross-sectional teeth are formed at a position that is too far from the central axis, interference occurs when fastening the brake disk, thereby reducing the design freedom of the brake disk. Therefore, the cross-sectional teeth are formed to satisfy the above-described range. It may be desirable.
  • the formation position of the cross-sectional teeth is not necessarily limited to the above-described range, and may be properly modified by a person skilled in the art in consideration of the concrete structure of the wheel bearing, the coupling structure with the constant velocity joint, and the brake disk. It is possible.
  • the wheel bearing assembly 100 is equipped with a sealing member 250 between the wheel 300 and the wheel hub 210, the wheel 300 and the wheel hub 210 It is comprised so that the clearance gap formed between may be sealed.
  • the wheel bearing assembly is equipped with a sealing member 250 to a portion of the hub flange of the wheel hub in the radially outer side of the cross-sectional teeth coupling the wheel 300 and the wheel hub 210.
  • the gap between the wheel 300 and the wheel hub 210 is configured to be sealed.
  • the sealing member 250 may include a wiring part 252 in which a wire having a circular cross section is formed in a ring shape, and an elastic part 254 surrounding the wiring part 252.
  • the wiring part 252 may be formed by forming a ring-shaped structure in which part is open (see FIG. 8), and then connecting the open part by welding (252a), and an elastic part.
  • the surface contacting the mounting portion 218 of the wheel hub may be configured to have a shape corresponding to the contact surface of the mounting portion 218.
  • the hub flange 212 of the wheel hub 210 may be provided with a mounting portion 218 for mounting the aforementioned sealing member 250.
  • the mounting portion 218 may be provided at a position radially outward of the cross-sectional teeth provided on the hub flange 212.
  • the bottom surface of the mounting portion 218 on which the sealing member 250 is mounted may be formed in a structure capable of preventing the mounted sealing member 250 from being detached.
  • the mounting portion 218 on which the sealing member 250 is mounted may be formed in an inclined surface shape in which the diameter increases as the bottom surface thereof moves toward the wheel side, as shown in FIG. 5.
  • the sealing member 250 mounted on the mounting portion of the hub flange 212 can be prevented from being arbitrarily engaged by being engaged by the inclined bottom structure of the mounting portion.
  • the sealing member 250 is radial from the mounting portion 218 formed on the wheel hub to prevent the interference occurs when mounting the brake disk 400, which will be described later to the wheel hub May be configured not to protrude outwardly (for example, as shown in FIG. 5, so as not to protrude radially outward from the outer circumferential surface 219 of the wheel hub adjacent to the mounting portion of the wheel hub).
  • the wheel hub 210 may further include a wheel pilot 216 extending in the axial direction at the wheel side end.
  • the wheel pilot 216 is inserted through the through hole formed in the center of the wheel 300 when the wheel 300 is fastened to the wheel hub 210 as shown in Figure 5 so that the wheel 300 wheel hub 310 It can perform a function of guiding the well to be moved to the fastening position along the central axis.
  • the wheel pilot 216 has a thread on the outer circumferential surface to screw the clamping member 340 having a thread corresponding to the inside to fix the wheel 300 to the wheel hub 210. It can be configured to.
  • the wheel 300 has a shaft between the wheel 300 and the wheel hub 210 only by screwing one clamping member 340 at the center of the wheel pilot 216 of the wheel hub 210. It is possible to stably fix the wheel 300 to the wheel hub 210 by providing a direction fixing force.
  • the brake disc 400 may be coupled to the hub flange 212 of the wheel hub 210 (see FIGS. 3 to 5).
  • the brake disc 400 may be configured in a shape similar to that of a conventional vehicle wheel bearing, and may be coupled using a fastening bolt or the like through a fastening hole formed in the hub flange 212 of the wheel hub 210.
  • the brake disc is configured to be coupled at the wheel side of the wheel hub, but the brake disc may be configured to be coupled at the vehicle body side of the wheel hub.
  • the wheel bearing and the wheel bearing assembly according to an embodiment of the present invention by using a wheel bearing assembly for a driven wheel, the wheel bearing and the wheel bearing assembly according to an embodiment of the present invention is a wheel hub as shown in FIG.
  • the central axis 510 of the constant velocity joint 500 with the spline structure formed on the inner circumferential surface to transfer the driving force or through the face spline structure 520 formed on the cross section of the wheel bearing and the constant velocity joint as shown in FIG. It can also be applied to a wheel bearing assembly for a drive wheel configured to transmit to the wheel bearing.
  • the invention has been described using a wheel bearing having a third generation structure in which one inner ring is mounted on the wheel hub, but the wheel bearing and the wheel bearing assembly according to an embodiment of the present invention may be used in addition to the third generation structure. It can of course also be applied to wheel bearings of any of various structures.
  • sealing lip sealing member elastic part

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

Abstract

According to one embodiment of the present invention, provided is a wheel bearing used for rotatably mounting a vehicle wheel on a vehicle body. A wheel hub of a wheel bearing, according to one embodiment of the present invention, includes a hub flange extending radially outward, wherein the hub flange has an end-face toothed-part at an end surface located on a wheel side, and thus can be tooth-coupled to a corresponding end-face toothed-part formed at the wheel. According to one embodiment of the present invention, the end-face toothed-part provided at the hub flange of the wheel hub is formed such that a plurality of teeth are spaced apart and arranged in a circumferential direction, and a sealing member for sealing a gap formed between the hub flange and the wheel can be provided at the radial outer side of the end-face toothed-part of the hub flange.

Description

휠베어링 및 휠베어링 조립체Wheel bearing and wheel bearing assembly

본 발명은 차량의 휠(wheel)을 차체에 회전가능하게 장착하여 지지하는 휠베어링 및 휠베어링 조립체에 관한 것으로, 보다 상세하게는 휠베어링과 휠 사이의 체결구조를 개선해 휠베어링 조립체를 조립하는데 소요되는 공정시간을 단축시키고 휠베어링 조립체의 경량화를 도모하면서 휠과 휠베어링 결합부위에 형성되는 간극의 밀봉성을 개선시킬 수 있도록 구성된 휠베어링 및 휠베어링 조립체에 관한 것이다.The present invention relates to a wheel bearing and a wheel bearing assembly for rotatably mounting and supporting a wheel of a vehicle on a vehicle body, and more particularly, to improve the fastening structure between the wheel bearing and the wheel and to assemble the wheel bearing assembly. The present invention relates to a wheel bearing and a wheel bearing assembly configured to shorten the process time and reduce the weight of the wheel bearing assembly while improving the sealing property of the gap formed between the wheel and the wheel bearing coupling portion.

도 1 및 도 2를 참조하면 종래에 이용되고 있는 통상의 차량용 휠베어링(소위 3세대 방식)이 예시적으로 도시되어 있다. 도 1 및 도 2에 도시된 바와 같이, 차량용 휠베어링은 휠(wheel)이 장착되는 회전요소(10; 휠허브)가 차량의 차체(예컨대, 샤시)에 고정되는 비회전요소(20; 외륜)에 전동체(30)를 통해 연결되어, 회전요소(10; 휠허브)에 장착된 휠을 차량의 차체에 회전가능한 상태로 지지하도록 구성된다.1 and 2, a conventional vehicle wheel bearing (so-called third generation type) conventionally used is illustrated by way of example. As shown in FIGS. 1 and 2, a wheel bearing for a vehicle includes a non-rotating element 20 (outer ring) in which a rotating element 10 (wheel hub) on which a wheel is mounted is fixed to a vehicle body (eg, a chassis) of the vehicle. It is connected to the through the rolling element 30, it is configured to support the wheel mounted on the rotating element 10 (wheel hub) in a rotatable state to the vehicle body of the vehicle.

구체적으로, 차량용 휠베어링은 외륜(20)의 외주면에 형성된 장착 플랜지(22)를 통해 외륜(20)이 차체에 고정되고 휠허브(10)의 외주면에 형성된 허브 플랜지(12)를 통해 휠허브(10)에 휠이 장착되도록 구성되며, 이 때 휠과 휠허브(10) 사이의 결합은 휠허브(10)의 허브 플랜지(12)에 형성된 복수의 관통구멍에 허브볼트(40)를 체결함으로써 수행되게 된다.Specifically, the wheel bearing for the vehicle is a wheel hub through the hub flange 12 formed on the outer circumferential surface of the wheel hub 10 is fixed to the vehicle body through the mounting flange 22 formed on the outer circumferential surface of the outer ring 20 10) the wheel is mounted, wherein the coupling between the wheel and the wheel hub 10 is performed by fastening the hub bolt 40 to a plurality of through holes formed in the hub flange 12 of the wheel hub 10. Will be.

그러나, 이러한 구조의 휠베어링의 경우에는 휠을 휠베어링에 장착하기 위해 다수의 허브볼트(통상적으로 5개~6개의 허브볼트)를 체결하는 공정을 거쳐야 하기 때문에 휠과 휠베어링의 조립공정에 많은 시간이 소요되고, 다수의 허브볼트의 체결로 인해 휠베어링 조립체의 중량이 증가되게 되는 문제가 있다.However, in the case of wheel bearings having such a structure, many hub bolts (typically 5 to 6 hub bolts) must be fastened in order to mount the wheels to the wheel bearings. It takes time and there is a problem that the weight of the wheel bearing assembly is increased due to the fastening of a plurality of hub bolts.

본 발명은 전술한 종래의 문제점을 해소하기 위한 것으로서, 휠베어링의 휠허브와 휠에 형성된 단면 치형부를 통한 맞물림 결합으로 휠과 휠베어링 사이의 체결구조를 개선해 다수의 허브볼트를 사용하지 않고도 휠을 휠베어링에 안정적으로 장착할 수 있도록 하여 공정시간 단축 및 경량화를 도모할 수 있으며 밀봉부재를 통해 단면 치형부 구조에 의해 휠과 휠허브 사이에 발생하는 간극을 충실하게 밀봉할 수 있도록 구성된 휠베어링 및 휠베어링 조립체를 제공하는 것을 목적으로 한다.The present invention is to solve the above-mentioned conventional problems, by improving the fastening structure between the wheel and the wheel bearing by engaging engagement through the wheel hub of the wheel bearing and the cross-sectional teeth formed on the wheel without using a plurality of hub bolts It can be stably mounted on the wheel bearing, which can shorten the process time and reduce the weight, and the wheel bearing is configured to faithfully seal the gap between the wheel and the wheel hub by the cross-sectional tooth structure through the sealing member. It is an object to provide a wheel bearing assembly.

본 발명의 일 실시예에 따르면, 차량의 휠을 차체에 회전가능하게 장착하는데 이용되는 휠베어링이 제공된다. 본 발명의 일 실시예에 따른 휠베어링은, 휠이 장착되어 휠과 함께 회전하는 휠허브와, 휠허브에 압입되어 장착되는 하나 이상의 내륜과, 하나 이상의 내륜의 반경방향 외측에 장착되며 외주면에 차체에 장착되는 장착 플랜지를 구비하는 외륜과, 하나 이상의 내륜과 외륜 사이에 장착되는 하나 이상의 전동체를 포함하고, 휠허브는 반경방향 외측으로 연장하는 허브 플랜지를 포함하고, 허브 플랜지는 휠측에 위치하는 단면에 단면 치형부가 구비되어 휠에 형성된 대응 단면 치형부에 치형결합되도록 구성될 수 있다. 본 발명의 일 실시예에 따르면, 휠허브의 허브 플랜지에 구비되는 단면 치형부는 복수의 치형(tooth)이 원주방향으로 이격되어 배치되도록 구성되며, 허브 플랜지의 단면 치형부의 반경방향 외측에는 허브 플랜지와 휠 사이에 형성되는 간극을 밀폐하는 밀봉부재가 구비되도록 구성될 수 있다.According to one embodiment of the invention, there is provided a wheel bearing used for rotatably mounting a wheel of a vehicle to a vehicle body. According to an embodiment of the present invention, a wheel bearing includes a wheel hub that is mounted with a wheel and rotates with the wheel, one or more inner wheels that are press-fitted to the wheel hubs, and a radial outer side of the one or more inner wheels, An outer ring having a mounting flange mounted thereon and one or more rolling elements mounted between the one or more inner and outer rings, the wheel hub comprising a hub flange extending radially outward, the hub flange being located on the wheel side The cross-sectional teeth are provided in the cross section and may be configured to be tooth-coupled to the corresponding cross-sectional teeth formed in the wheel. According to one embodiment of the invention, the cross-sectional teeth provided on the hub flange of the wheel hub is configured such that a plurality of teeth (tooth) are arranged spaced apart in the circumferential direction, the radially outer side of the cross-sectional teeth of the hub flange and the hub flange It may be configured to be provided with a sealing member for sealing a gap formed between the wheels.

본 발명의 일 실시예에 따르면, 휠허브의 허브 플랜지는 단면 치형부의 반경방향 외측에 밀봉부재를 장착하기 위한 장착부를 구비하고, 장착부는 밀봉부재가 장착되는 바닥면의 직경이 휠측으로 갈수록 증가되는 형상으로 형성될 수 있다.According to one embodiment of the invention, the hub flange of the wheel hub has a mounting portion for mounting the sealing member on the radially outer side of the cross-sectional teeth, the mounting portion is increased in diameter toward the wheel side of the bottom surface on which the sealing member is mounted It may be formed in a shape.

본 발명의 일 실시예에 따르면, 장착부는 밀봉부재가 장착되는 바닥면이 휠측으로 갈수록 직경이 증가되는 경사면 형상으로 형성될 수 있다.According to an embodiment of the present invention, the mounting portion may be formed in an inclined surface shape in which the diameter of the bottom surface on which the sealing member is mounted increases toward the wheel side.

본 발명의 일 실시예에 따르면, 밀봉부재는 원형 단면의 와이어가 링형상으로 형성된 와이어링부와 와이어링부를 둘러싸는 탄성부로 구성될 수 있다.According to one embodiment of the present invention, the sealing member may be composed of a wiring portion formed in a ring shape with a wire having a circular cross section and an elastic portion surrounding the wiring portion.

본 발명의 일 실시예에 따르면, 밀봉부재의 탄성부에서 장착부에 접촉하는 면은 장착부의 접촉면에 대응되는 형상으로 형성될 수 있다.According to one embodiment of the invention, the surface in contact with the mounting portion in the elastic portion of the sealing member may be formed in a shape corresponding to the contact surface of the mounting portion.

본 발명의 일 실시예에 따르면, 와이어링부는 일부가 개방된 링형상의 구조로 형성되고, 와이어링부의 개방된 부분은 용접을 통해 연결되도록 구성될 수 있다.According to an embodiment of the present invention, the wiring part may be formed in a ring-shaped structure in which part is open, and the open part of the wiring part may be configured to be connected by welding.

본 발명의 일 실시예에 따르면, 휠허브의 허브 플랜지에 구비되는 단면 치형부의 치형은 휠에 형성되는 대응 단면 치형부의 치형보다 작은 부피를 갖도록 형성될 수 있다.According to one embodiment of the invention, the teeth of the cross-sectional teeth provided on the hub flange of the wheel hub may be formed to have a smaller volume than the teeth of the corresponding cross-sectional teeth formed on the wheel.

본 발명의 일 실시예에 따르면, 휠허브의 허브 플랜지에 구비되는 단면 치형부의 치형은 휠에 구비되는 대응 단면 치형부의 치형과 1:1.2 내지 1:1.4 범위의 부피비를 갖도록 구성될 수 있다.According to one embodiment of the invention, the teeth of the cross-sectional teeth provided on the hub flange of the wheel hub may be configured to have a volume ratio of 1: 1.2 to 1: 1.4 with the teeth of the corresponding cross-sectional teeth provided on the wheel.

본 발명의 일 실시예에 따르면, 휠허브의 허브 플랜지에 구비되는 단면 치형부는 90mm 이상 130mm 이하의 피치원 직경을 갖도록 형성될 수 있다.According to one embodiment of the invention, the cross-sectional teeth provided on the hub flange of the wheel hub may be formed to have a pitch circle diameter of 90mm or more and 130mm or less.

본 발명의 일 실시예에 따르면, 전술한 휠베어링을 구비하는 휠베어링 조립체가 제공될 수 있다. 본 발명의 일 실시예에 따른 휠베어링 조립체는 휠베어링의 휠허브에 결합되는 휠을 더 포함할 수 있다. 본 발명의 일 실시예에 따르면, 휠은 휠허브의 허브 플랜지에 구비되는 단면 치형부와 치형결합되는 대응 단면 치형부를 구비하고, 휠에 구비되는 대응 단면 치형부는 복수의 치형(tooth)이 원주방향으로 이격되어 배치되도록 구성될 수 있다.According to an embodiment of the present invention, a wheel bearing assembly having the above-described wheel bearing may be provided. The wheel bearing assembly according to an embodiment of the present invention may further include a wheel coupled to the wheel hub of the wheel bearing. According to an embodiment of the present invention, the wheel has a corresponding cross-sectional tooth that is tooth-coupled with a cross-sectional tooth provided in the hub flange of the wheel hub, and the corresponding cross-sectional tooth provided in the wheel has a plurality of teeth in a circumferential direction. It may be configured to be spaced apart.

본 발명의 일 실시예에 따르면, 휠에 구비되는 단면 치형부는 90mm 이상 130mm 이하의 피치원 직경을 갖도록 형성될 수 있다.According to one embodiment of the invention, the cross-sectional teeth provided on the wheel may be formed to have a pitch circle diameter of 90mm or more and 130mm or less.

본 발명의 일 실시예에 따른 휠베어링 및 휠베어링 조립체는 휠베어링과 휠이 단면 치형부(face-spline)를 통해 맞물림 결합되어 체결되도록 구성되어 있기 때문에 중심부에 하나의 클램핑 부재(예컨대, 체결너트)를 체결하는 작업만으로 휠을 휠베어링의 휠허브에 장착할 수 있고, 이로 인해 공정시간 단축 및 제품의 경량화를 도모할 수 있게 된다.The wheel bearing and the wheel bearing assembly according to the embodiment of the present invention are configured to be engaged by engaging the wheel bearing and the wheel through a face-spline, so that one clamping member (for example, a fastening nut at the center) is provided. By simply tightening), the wheel can be mounted on the wheel hub of the wheel bearing, which can reduce the process time and reduce the weight of the product.

또한, 본 발명의 일 실시예에 따른 휠베어링 및 휠베어링 조립체는 휠과 휠베어링 사이의 결합에 이용되는 단면 치형부의 반경방향 외측에 밀봉부재를 구비해 단면 치형부에 의해 휠과 휠베어링 사이에 발생하게 되는 간극을 밀폐시켜 휠베어링 조립체의 밀봉성을 효과적으로 향상시킬 수 있게 된다.In addition, the wheel bearing and the wheel bearing assembly according to an embodiment of the present invention is provided with a sealing member on the radially outer side of the cross-sectional teeth used for coupling between the wheel and the wheel bearing between the wheel and the wheel bearing by the cross-sectional teeth. It is possible to effectively improve the sealability of the wheel bearing assembly by closing the gap to be generated.

도 1 및 도 2는 종래에 이용되고 있는 차량용 휠베어링의 구조를 예시적으로 도시한다.1 and 2 exemplarily illustrate a structure of a wheel bearing for a vehicle which is conventionally used.

도 3은 본 발명의 일 실시예에 따른 휠베어링 조립체의 구조를 예시적으로 도시한다.3 exemplarily shows a structure of a wheel bearing assembly according to an embodiment of the present invention.

도 4은 본 발명의 일 실시예에 따른 휠베어링 조립체의 단면구조를 예시적으로 도시한다.4 exemplarily illustrates a cross-sectional structure of a wheel bearing assembly according to an embodiment of the present invention.

도 5는 본 발명의 일 실시예에 따른 휠베어링의 조립체의 허브 플랜지 부위의 결합구조를 예시적으로 도시한다.5 exemplarily shows a coupling structure of a hub flange portion of an assembly of a wheel bearing according to an embodiment of the present invention.

도 6은 본 발명의 일 실시예에 따른 휠베어링의 조립체에서 휠허브의 허브 플랜지에 구비되는 단면 치형부의 구조를 예시적으로 도시한다.6 exemplarily shows a structure of a cross-sectional tooth portion provided in the hub flange of the wheel hub in the assembly of the wheel bearing according to the embodiment of the present invention.

도 7은 본 발명의 일 실시예에 따른 휠베어링의 조립체에서 휠에 구비되는 대응 단면 치형부의 구조를 예시적으로 도시한다.7 exemplarily shows a structure of a corresponding cross-sectional tooth portion provided in a wheel in an assembly of a wheel bearing according to an embodiment of the present invention.

도 8은 본 발명의 일 실시예에 따른 휠베어링 조립체의 밀봉부재를 구성하는 와이어링부의 구조를 예시적으로 도시한다.8 exemplarily shows a structure of a wiring part constituting a sealing member of a wheel bearing assembly according to an embodiment of the present invention.

도 9는 본 발명의 일 실시예에 따른 휠베어링 조립체가 차량의 구동륜에 적용되는 실시형태를 예시적으로 도시한다.9 exemplarily shows an embodiment in which a wheel bearing assembly according to an embodiment of the present invention is applied to a drive wheel of a vehicle.

도 10은 본 발명의 일 실시예에 따른 휠베어링 조립체가 차량의 구동륜에 적용되는 또다른 실시형태를 예시적으로 도시한다.10 exemplarily shows another embodiment in which a wheel bearing assembly according to an embodiment of the present invention is applied to a drive wheel of a vehicle.

이하, 첨부한 도면을 참조하여 본 발명의 바람직한 실시예에 대해 본 발명이 속하는 기술 분야에서 통상의 지식을 가진 자가 용이하게 실시할 수 있을 정도로 상세하게 설명한다.Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention.

본 발명을 명확하게 설명하기 위하여 본 발명과 관계없는 부분에 대한 구체적인 설명은 생략하고, 명세서 전체를 통하여 동일한 구성요소에 대해서는 동일한 참조부호를 붙여 설명하도록 한다. 또한, 도면에 도시된 각 구성요소들의 형상 및 크기는 설명의 편의를 위해 임의로 도시된 것이므로, 본 발명이 반드시 도시된 형상 및 크기로 한정되는 것은 아니다. 즉, 명세서에 기재되어 있는 특정 형상, 구조 및 특성은 본 발명의 사상 및 범위를 벗어나지 않으면서 일 실시예로부터 다른 실시예로 변형되어 구현될 수 있으며, 개별 구성요소의 위치 또는 배치도 본 발명의 사상 및 범위를 벗어나지 않으면서 변경될 수 있는 것으로 이해되어야 한다. 따라서 후술하는 상세한 설명은 한정적인 의미로 행하여지는 것이 아니며, 본 발명의 범위는 특허청구범위의 청구항들이 청구하는 범위 및 그와 균등한 모든 범위를 포괄하는 것으로 받아들여져야 한다.In order to clearly describe the present invention, a detailed description of parts not related to the present invention will be omitted, and like reference numerals refer to like elements throughout. In addition, since the shape and size of each component shown in the drawings are arbitrarily illustrated for convenience of description, the present invention is not necessarily limited to the illustrated shape and size. That is, the specific shapes, structures, and characteristics described in the specification may be modified and implemented from one embodiment to another without departing from the spirit and scope of the present invention, and the position or arrangement of individual components may be embodied in the spirit of the present invention. And changes may be made without departing from the scope thereof. The following detailed description, therefore, is not to be taken in a limiting sense, and the scope of the present invention should be taken as encompassing the scope of the claims as claimed and all equivalents thereto.

본 발명의 바람직한 실시예Preferred Embodiments of the Invention

도 3 내지 도 10을 참조하면, 본 발명의 일 실시예에 따른 휠베어링 조립체(100)가 예시적으로 도시되어 있다. 도 3 및 도 4에 도시된 바와 같이, 본 발명의 일 실시예에 따른 휠베어링 조립체(100)는 휠(wheel)을 차량의 차체(예컨대, 샤시)에 회전가능하게 장착하여 지지하는 휠베어링(200)과 휠베어링의 일측에 결합되는 휠(300) 및 브레이크 디스크(400)를 포함할 수 있다.3 to 10, a wheel bearing assembly 100 according to an embodiment of the present invention is illustrated by way of example. As shown in Figure 3 and 4, the wheel bearing assembly 100 according to an embodiment of the present invention is a wheel bearing rotatably mounted to support the wheel (wheel) to the vehicle body (eg chassis) of the vehicle ( 200 and the wheel 300 and the brake disk 400 coupled to one side of the wheel bearing may be included.

본 발명의 일 실시예에 따르면, 휠베어링(200)은 통상의 차량용 휠베어링과 전체적으로 유사한 구조로 형성될 수 있다. 예컨대, 본 발명의 일 실시예에 따른 휠베어링 조립체(100)는 도면에 도시된 바와 같이 휠허브(210; 회전요소), 외륜(220; 비회전요소), 내륜(230), 전동체(240) 등으로 휠베어링(200)을 구성할 수 있다.According to an embodiment of the present invention, the wheel bearing 200 may be formed in a structure similar to that of a general vehicle wheel bearing. For example, the wheel bearing assembly 100 according to an embodiment of the present invention is a wheel hub 210 (rotating element), outer ring 220 (non-rotating element), inner ring 230, rolling element 240 as shown in the figure The wheel bearing 200 may be configured as, for example.

휠허브(210)는 후술하는 휠(300)이 장착되는 부재로, 축방향을 따라 연장하는 대략 원통형 형상의 구조로 형성되며 휠허브(210)의 휠측 단부 부근에는 허브 플랜지(212)가 구비될 수 있다. 허브 플랜지(212)는 휠허브(210)의 반경방향 외측으로 연장된 형상으로 형성되어 후술하는 휠(300) 및/또는 브레이크 디스크(400)를 장착하는데 이용될 수 있다. 한편, 휠허브(210)의 차체측 단부에는 직경이 축소되는 단차부(214)가 구비되어 내륜(230)을 휠허브(210)에 장착하도록 구성될 수 있으며, 휠허브(210)의 외주면 일부에는 전동체(240)가 접촉하는 궤도륜(내측 궤도륜)이 형성될 수 있다.The wheel hub 210 is a member to which the wheel 300, which will be described later, is mounted. The wheel hub 210 is formed in a substantially cylindrical shape extending along the axial direction, and a hub flange 212 is provided near the wheel side end of the wheel hub 210. Can be. The hub flange 212 may be formed to extend radially outwardly of the wheel hub 210 to be used to mount the wheel 300 and / or the brake disc 400 described later. On the other hand, the vehicle body side end of the wheel hub 210 is provided with a stepped portion 214 is reduced in diameter may be configured to mount the inner ring 230 to the wheel hub 210, a portion of the outer peripheral surface of the wheel hub 210 The track wheel (inner track wheel) that the rolling element 240 contacts may be formed.

외륜(220)은 외주면에 차체(예컨대, 샤시)와의 결합에 이용되는 장착 플랜지(222)를 구비하고 내주면에 전동체(240)가 접촉하는 궤도륜을 구비하도록 구성될 수 있다. 외륜(220)의 내주면에 형성된 궤도륜(외측 궤도륜)은 휠허브(210) 및/또는 내륜(230)에 형성된 궤도륜(내측 궤도륜)과 협력해 궤도륜 사이에 구름요소인 전동체(240)를 수용하여 지지하는 기능을 수행한다.The outer ring 220 may be configured to include a mounting flange 222 used for coupling to a vehicle body (eg, a chassis) on an outer circumferential surface thereof and a track ring to which the rolling element 240 contacts the inner circumferential surface thereof. The track wheel (outer track wheel) formed on the inner circumferential surface of the outer ring 220 cooperates with the track wheel (inner track wheel) formed on the wheel hub 210 and / or the inner ring 230 to form a rolling element that is a rolling element between the track wheels. 240 to accommodate and support.

내륜(230)은 휠허브(210)의 일측에 장착되어 전동체(240)의 내측 궤도륜을 형성하는 기능을 수행한다. 이를 위해, 내륜(230)은 외주면에 전동체(240)가 접촉하는 궤도륜(내측 궤도륜)을 구비할 수 있으며, 휠허브(210)의 차체측 단부에 형성된 단차부(214)에 삽입된 상태에서 휠허브(210)의 끝단부를 도 5에 도시된 바와 같이 반경방향 외측으로 소성변형시키거나 휠허브(210)의 차체측 단부에 너트 등을 체결해 휠허브(210)에 안착되어 유지되도록 구성될 수 있다.The inner ring 230 is mounted on one side of the wheel hub 210 to form an inner race wheel of the rolling element 240. To this end, the inner ring 230 may include a raceway (inner raceway) contacting the rolling element 240 on the outer circumferential surface, and inserted into the stepped portion 214 formed at the vehicle body side end portion of the wheel hub 210. In the state, the end of the wheel hub 210 is plastically deformed radially outward as shown in FIG. 5 or by fastening a nut or the like to the vehicle body side end of the wheel hub 210 so as to be seated on the wheel hub 210. Can be configured.

전동체(240)는 휠허브(210) 및/또는 내륜(230)에 형성된 궤도륜(내측 궤도륜)과 외륜(220)에 형성된 궤도륜(외측 궤도륜) 사이에 배치되어, 휠이 장착되는 휠허브(210)를 차체에 체결되는 외륜(220)에 대하여 회전가능하게 지지하는 기능을 수행한다.The rolling element 240 is disposed between the track wheel (inner track wheel) formed on the wheel hub 210 and / or the inner ring 230 and the track wheel (outer track wheel) formed on the outer ring 220, and the wheel is mounted thereon. The wheel hub 210 performs a function of rotatably supporting the outer ring 220 is fastened to the vehicle body.

본 발명의 일 실시예에 따르면, 휠허브(210)의 허브 플랜지(212)에는 휠(300)이 장착되어 고정될 수 있다. 본 발명의 일 실시예에 따른 휠베어링 조립체(100)에 이용되는 휠(300)은 통상의 차량용 휠과 전체적으로 유사한 구조로 형성될 수 있다. 예컨대, 휠(300)은 중심부에 위치하는 휠보스(310)와 휠보스(310)로부터 반경방향 외측으로 연장하는 복수의 휠아암(320)과 휠아암(320)의 끝단에 연결되는 휠림(330) 등으로 구성될 수 있다.According to an embodiment of the present invention, the wheel 300 may be mounted and fixed to the hub flange 212 of the wheel hub 210. The wheel 300 used in the wheel bearing assembly 100 according to an embodiment of the present invention may be formed in a structure similar to that of a general vehicle wheel. For example, the wheel 300 includes a wheel boss 310 positioned at the center and a plurality of wheel arms 320 extending radially outward from the wheel boss 310 and wheel wheels 330 connected to ends of the wheel arms 320. ) And the like.

본 발명의 일 실시예에 따르면, 전술한 휠(300)은 단면 치형부를 통한 맞물림 결합으로 휠허브(210)의 허브 플랜지(212)에 결합될 수 있다. 구체적으로, 본 발명의 일 실시예에 따른 휠베어링(200)은 휠허브(210)의 일측 단면(휠측에 위치하는 단면)에 복수의 치형(215)이 원주방향을 따라 이격되어 배치된 단면 치형부를 구비하고, 휠(300)은 휠허브(210)와 결합시 휠허브(210)의 단면 치형부에 대응하는 위치에 복수의 치형(315)이 원주방향을 따라 이격되어 배치된 대응 단면 치형부를 구비해[도 5에 도시된 A 부분에 단면 치형부가 형성], 휠허브(210)의 허브 플랜지(212)에 구비된 단면 치형부와 휠(300)에 구비된 대응 단면 치형부 사이의 맞물림 결합을 통해 휠(300)이 휠베어링의 휠허브(210)에 체결되도록 구성될 수 있다.According to one embodiment of the invention, the wheel 300 described above may be coupled to the hub flange 212 of the wheel hub 210 by engaging engagement through the cross-sectional teeth. Specifically, the wheel bearing 200 according to an embodiment of the present invention is a cross-sectional tooth in which a plurality of teeth 215 are spaced apart along the circumferential direction on one side end surface (section located at the wheel side) of the wheel hub 210. And a wheel 300 having a corresponding cross-sectional tooth in which a plurality of teeth 315 are spaced apart along the circumferential direction at a position corresponding to the cross-sectional tooth of the wheel hub 210 when coupled with the wheel hub 210. Equipped with a cross section tooth formed in the hub flange 212 of the wheel hub 210 and an engagement coupling between the corresponding cross section provided in the wheel 300 and the cross section tooth provided in the wheel 300. Through the wheel 300 may be configured to be fastened to the wheel hub 210 of the wheel bearing.

도 6 및 도 7을 참조하면, 본 발명의 일 실시예에 따른 휠베어링의 허브 플랜지(212)에 구비되는 단면 치형부와 휠(300)에 구비되는 대응 단면 치형부의 구조가 예시적으로 도시되어 있다. 도 6 및 도 7에 도시된 바와 같이, 허브 플랜지(212)에 구비되는 단면 치형부 및 휠(300)에 구비되는 대응 단면 치형부는 복수의 치형이 중심축을 중심으로 원주방향을 따라 이격되어 배치된 형상으로 형성될 수 있으며(예컨대, 도 6 및 도 7에 도시된 바와 같이 치형을 반으로 가르는 중심선이 중심축에서 교차되도록 구성될 수 있음), 치형은 휠허브 및 휠로부터 축방향으로 돌출된 형태로 형성될 수 있다. 한편, 원활한 맞물림 결합을 위해 허브 플랜지(212)에 구비되는 단면 치형부의 치형(215)과 휠(300)에 구비되는 대응 단면 치형부의 치형(315)은 서로 맞물릴 수 있는 형상으로 형성될 수 있다. 예컨대, 허브 플랜지(212)에 구비되는 단면 치형부의 치형(215)과 휠(300)에 구비되는 대응 단면 치형부의 치형(315)은 도 6 및 도 7에 도시된 바와 같이 중심축으로 접근할수록 치형의 양측 측면 사이의 거리가 좁아지는 구조로 형성될 수 있다(축방향에서 바라볼 때 사다리꼴 형상을 갖는 구조). 다만, 단면 치형부는 도면에 도시된 형상으로 한정되어야 하는 것은 아니고 양측 단면 치형부가 맞물림 결합될 수 있다면 임의의 다양한 형상으로 형성되어도 무방하다. 예컨대, 도면에 도시된 치형과 달리 단면 치형부는 치형의 양측 측면이 서로 평행하게 형성되도록 구성될 수도 있다(축방향에서 바라볼 때 직사각형 형상을 갖는 구조).6 and 7, the cross-sectional teeth provided on the hub flange 212 of the wheel bearing according to an embodiment of the present invention and the corresponding cross-sectional teeth provided on the wheel 300 are exemplarily illustrated. have. 6 and 7, the cross-sectional teeth provided on the hub flange 212 and the corresponding cross-sectional teeth provided on the wheel 300 are arranged with a plurality of teeth spaced apart in a circumferential direction about a central axis. 6 may be formed in a shape (for example, a center line dividing the teeth in half as shown in FIGS. 6 and 7 may be configured to intersect at the central axis), and the teeth are axially projected from the wheel hub and the wheel. It can be formed as. Meanwhile, the teeth 215 of the cross-sectional teeth provided on the hub flange 212 and the teeth 315 of the corresponding cross-sectional teeth provided on the wheel 300 may be formed to engage with each other for smooth engagement. . For example, the teeth 215 of the cross-sectional teeth provided on the hub flange 212 and the teeth 315 of the corresponding cross-sectional teeth provided on the wheel 300 are closer to the central axis as shown in FIGS. 6 and 7. It can be formed in a structure in which the distance between both sides of the narrower (structure having a trapezoidal shape when viewed in the axial direction). However, the cross-sectional teeth are not limited to the shapes shown in the drawings, and may be formed in any of various shapes as long as both cross-sectional teeth can be engaged with each other. For example, unlike the teeth shown in the figures, the cross-sectional teeth may be configured such that both sides of the teeth are formed parallel to each other (a structure having a rectangular shape when viewed in the axial direction).

본 발명의 일 실시예에 따르면, 휠베어링(200)의 허브 플랜지(212)에 구비되는 단면 치형부는 치형(215)의 부피가 휠(300)에 구비되는 대응 단면 치형부의 치형(315)의 부피보다 작은 부피를 갖도록 형성될 수 있다. 통상적으로, 차량용 휠베어링의 휠허브(210)는 상대적으로 높은 강도를 갖는 탄소강 등의 소재로 형성되는데 반해, 휠허브에 결합되는 휠(300)은 상대적으로 강도가 낮은 알루미늄 합금 등의 소재로 형성되게 된다. 따라서, 서로 맞물리는 양측 단면 치형부의 치형을 동일하게 형성하게 되면 휠허브로부터 휠로 회전력이 원활하게 전달되지 않거나 일측 단면 치형부의 치형[예컨대, 휠에 구비되는 단면 치형부의 치형]이 결합되는 상대측 부재에 의해 손상될 위험이 있다. 이에 반해, 본 발명의 일 실시예에 따른 휠베어링 조립체와 같이 상대적으로 높은 강도를 갖는 휠허브에 구비되는 단면 치형부의 치형(215)을 상대적으로 낮은 강도를 갖는 휠에 구비되는 단면 치형부의 치형(315)에 비해 작은 부피로 형성하게 되면, 결합되는 양쪽 부재 사이의 강도 차이로 인해 발생할 수 있는 전술한 문제를 상쇄하고 단면 치형부가 보다 안정적이고 오랜 시간 작동할 수 있게 된다.According to one embodiment of the present invention, the cross-sectional teeth of the hub flange 212 of the wheel bearing 200 have the volume of the teeth 315 of the corresponding cross-sectional teeth of the tooth 215 provided on the wheel 300. It can be formed to have a smaller volume. Typically, the wheel hub 210 of a vehicle wheel bearing is formed of a material such as carbon steel having a relatively high strength, whereas the wheel 300 coupled to the wheel hub is formed of a material such as aluminum alloy having a relatively low strength. Will be. Therefore, when the teeth of both end surface teeth engaged with each other are formed to be the same, the rotational force is not smoothly transmitted from the wheel hub to the wheel, or the teeth of one side teeth of the one side teeth (for example, the teeth of the cross-sectional teeth provided on the wheel) are coupled to the mating member. There is a risk of damage. On the contrary, the teeth 215 of the cross section teeth provided in the wheel hub having a relatively high strength, such as the wheel bearing assembly according to the embodiment of the present invention, are provided with the teeth of the cross section teeth provided in the wheel having a relatively low strength ( The smaller volume compared to 315) counteracts the above-mentioned problems that may arise due to the difference in strength between the two members being joined and allows the cross-sectional teeth to be more stable and operate for longer periods of time.

본 발명의 일 실시예에 따르면, 휠허브에 구비되는 단면 치형부의 치형(215)은 차량용 휠베어링의 휠허브와 이에 결합되는 휠을 제조하는데 이용되는 재질의 특성을 고려해 볼 때 휠에 구비되는 대응 단면 치형부의 치형(315)과 1:1.2 내지 1:1.4 범위의 부피비를 갖도록 형성되는 것이 바람직하다. 휠허브에 구비되는 단면 치형부와 휠에 구비되는 대응 단면 치형부의 치형들 사이의 부피비가 너무 크게 형성되면 휠허브에 구비되는 단면 치형부의 치형이 너무 작게 형성되어 치형부의 결합력에 문제가 발생할 수 있고, 부피비가 너무 작게 형성되면 휠허브와 휠의 재질 사이의 강도 차이를 충분히 상쇄되지 못하여 휠에 구비되는 대응 단면 치형부가 쉽게 손상될 수 있기 때문에, 휠허브와 휠에 구비되는 단면 치형부의 치형은 전술한 범위의 부피비로 형성되는 것이 바람직할 수 있다. 다만, 휠허브와 휠에 구비되는 단면 치형부의 치형은 반드시 전술한 범의 부피비로 한정되어 실시되어야만 하는 것은 아니고, 통상의 기술자는 휠허브와 휠의 구체적인 재질 및 휠베어링의 세부 구조 등을 고려해 부피비를 적절히 변형해 실시하는 것도 가능하다.According to an embodiment of the present invention, the teeth 215 of the cross-sectional teeth provided on the wheel hub correspond to the wheels provided in consideration of the characteristics of the materials used to manufacture the wheel hubs and wheels coupled thereto for the vehicle wheel bearings. It is preferably formed to have a volume ratio between the teeth 315 of the cross-sectional teeth and in the range of 1: 1.2 to 1: 1.4. If the volume ratio between the cross-sectional teeth provided on the wheel hub and the teeth of the corresponding cross-sectional teeth provided on the wheel is too large, the teeth of the cross-sectional teeth provided on the wheel hub are formed too small, which may cause problems in the coupling force of the teeth. Since the volume ratio is too small, the difference in strength between the wheel hub and the material of the wheel may not be sufficiently offset so that the corresponding cross-sectional teeth of the wheel may be easily damaged. It may be desirable to form in a range of volume ratios. However, the tooth shape of the wheel hub and the cross-sectional teeth provided on the wheel is not necessarily limited to the volume ratio of the above-described range, and a person skilled in the art may determine the volume ratio in consideration of the concrete material of the wheel hub and the wheel and the detailed structure of the wheel bearing. It is also possible to modify it suitably.

본 발명의 일 실시예에 따르면, 휠허브(210)에 구비되는 단면 치형부 및 휠(300)에 구비되는 단면 치형부는 원활한 회전력 전달을 위해 통상의 차량용 휠베어링 조립체(도 1 및 도 2 참조)에서 허브볼트가 장착되던 위치에 대응되게 형성되는 것이 바람직하다. 예컨대, 본 발명의 일 실시예 따른 휠베어링 조립체는 휠허브 및 휠에 구비되는 단면 치형부의 피치원 직경(도 6에 도시된 PCDhub 및 도 7에 도시된 PCDwheel)이 90mm 이상 130mm 이하가 되도록 형성하는 것이 바람직하다. 휠허브와 휠에 구비되는 단면 치형부를 너무 중심축에 가깝게 형성하게 되면 휠베어링에 등속조인트를 결합하는데 이용되는 체결너트의 직경이 너무 작아져 등속조인트와 휠베어링 사이에 안정적인 결합력이 제공되지 못할 우려가 있고, 단면 치형부를 중심축에서 너무 이격된 위치에 형성하게 되면 브레이크 디스크를 체결하는데 간섭이 발생하게 되어 브레이크 디스크의 설계 자유도를 감소시킬 수 있기 때문에, 단면 치형부는 전술한 범위를 만족하도록 형성되는 것이 바람직할 수 있다. 다만, 단면 치형부의 형성 위치는 반드시 전술한 범위로 한정되어 형성되어야만 하는 것은 아니고, 휠베어링의 구체적인 구조나 등속조인트 및 브레이크 디스크와의 결합 구조 등을 고려해 통상의 기술자가 적절하게 변형하여 실시하는 것도 가능하다.According to an embodiment of the present invention, the cross-sectional teeth provided on the wheel hub 210 and the cross-sectional teeth provided on the wheel 300 are conventional vehicle wheel bearing assemblies (see FIGS. 1 and 2) for smooth rotational force transmission. In the hub bolt is preferably formed to correspond to the position where it was mounted. For example, the wheel bearing assembly according to an embodiment of the present invention is such that the pitch circle diameters (PCD hub shown in FIG. 6 and PCD wheel shown in FIG. 7) of the cross-sectional teeth provided on the wheel hub and the wheel are 90 mm or more and 130 mm or less. It is preferable to form. If the cross-sectional teeth provided on the wheel hub and the wheel are formed too close to the central axis, the diameter of the fastening nut used for coupling the constant velocity joint to the wheel bearing is too small, and thus a stable coupling force cannot be provided between the constant velocity joint and the wheel bearing. In addition, since the cross-sectional teeth are formed at a position that is too far from the central axis, interference occurs when fastening the brake disk, thereby reducing the design freedom of the brake disk. Therefore, the cross-sectional teeth are formed to satisfy the above-described range. It may be desirable. However, the formation position of the cross-sectional teeth is not necessarily limited to the above-described range, and may be properly modified by a person skilled in the art in consideration of the concrete structure of the wheel bearing, the coupling structure with the constant velocity joint, and the brake disk. It is possible.

한편, 본 발명의 일 실시예와 같이 휠(300)과 휠허브(210) 사이를 단면 치형부를 통해 결합하게 되면 휠(300)과 휠허브(210) 사이에 간극이 발생해 외부의 수분이나 오염물 등이 휠베어링 내부로 유입될 위험이 생길 수 있다. 이러한 문제를 방지하기 위해 본 발명의 일 실시예에 따른 휠베어링 조립체(100)는 휠(300)과 휠허브(210) 사이에 밀봉부재(250)를 장착해 휠(300)과 휠허브(210) 사이에 형성되는 간극을 밀폐할 수 있도록 구성되어 있다. 구체적으로, 본 발명의 일 실시예에 따른 휠베어링 조립체는 휠(300)과 휠허브(210)를 결합하는 단면 치형부의 반경방향 외측에서 휠허브의 허브 플랜지의 일부에 밀봉부재(250)를 장착해 휠(300)과 휠허브(210) 사이의 간극을 밀폐하도록 구성하고 있다.On the other hand, when the coupling between the wheel 300 and the wheel hub 210 through the cross-sectional teeth as in one embodiment of the present invention, a gap is generated between the wheel 300 and the wheel hub 210, the external water or contaminants There is a risk that the back will flow into the wheel bearing. In order to prevent this problem, the wheel bearing assembly 100 according to an embodiment of the present invention is equipped with a sealing member 250 between the wheel 300 and the wheel hub 210, the wheel 300 and the wheel hub 210 It is comprised so that the clearance gap formed between may be sealed. Specifically, the wheel bearing assembly according to an embodiment of the present invention is equipped with a sealing member 250 to a portion of the hub flange of the wheel hub in the radially outer side of the cross-sectional teeth coupling the wheel 300 and the wheel hub 210. The gap between the wheel 300 and the wheel hub 210 is configured to be sealed.

도 5 및 도 8을 참조하면, 본 발명의 일 실시예에 따른 밀봉부재(250) 및 이러한 밀봉부재를 장착하기 위한 장착부 구조가 예시적으로 도시되어 있다. 도 5에 도시된 바와 같이, 밀봉부재(250)는 원형 단면의 와이어가 링형상으로 형성된 와이어링부(252)와 와이어링부(252)를 둘러싸는 탄성부(254)로 구성될 수 있다. 본 발명의 일 실시예에 따르면, 와이어링부(252)는 일부가 개방된 링형상의 구조로 형성된 다음(도 8 참조) 개방된 부분을 용접을 통해 연결(252a)하여 형성될 수 있으며, 탄성부(254)는 일측 단부에 하나 이상의 씰링립(254a)을 구비해 씰링립(254a)을 휠의 단면에 접촉시켜 휠베어링과 휠 사이의 밀봉을 수행하도록 구성될 수 있고, 탄성부(254)에서 휠허브의 장착부(218)에 접촉하는 면은 장착부(218)의 접촉면에 대응되는 형상으로 형성되도록 구성될 수 있다.5 and 8, a sealing member 250 and a mounting structure for mounting such a sealing member according to an embodiment of the present invention are exemplarily illustrated. As shown in FIG. 5, the sealing member 250 may include a wiring part 252 in which a wire having a circular cross section is formed in a ring shape, and an elastic part 254 surrounding the wiring part 252. According to one embodiment of the present invention, the wiring part 252 may be formed by forming a ring-shaped structure in which part is open (see FIG. 8), and then connecting the open part by welding (252a), and an elastic part. 254 may be configured to have one or more sealing lips 254a at one end to contact the sealing lips 254a with a cross section of the wheel to effect sealing between the wheel bearing and the wheels, and at the elastic portion 254 The surface contacting the mounting portion 218 of the wheel hub may be configured to have a shape corresponding to the contact surface of the mounting portion 218.

본 발명의 일 실시예에 따르면, 휠허브(210)의 허브 플랜지(212)에는 전술한 밀봉부재(250)를 장착하기 위한 장착부(218)가 구비될 수 있다. 예컨대, 장착부(218)는 허브 플랜지(212)에 구비되는 단면 치형부의 반경방향 외측의 위치에 구비될 수 있다. 본 발명의 일 실시예에 따르면, 밀봉부재(250)가 장착되는 장착부(218)의 바닥면은 장착된 밀봉부재(250)가 임의로 이탈하는 것을 방지할 수 있는 구조로 형성될 수 있다. 예컨대, 밀봉부재(250)가 장착되는 장착부(218)는 도 5에 도시된 바와 같이 바닥면이 휠측으로 갈수록 직경이 증가되는 경사면 형상으로 형성될 수 있다. 이러한 구조에 의하면, 허브 플랜지(212)의 장착부에 장착된 밀봉부재(250)가 장착부의 경사진 바닥면 구조에 의해 걸림결합되어 임의로 이탈되는 것이 방지될 수 있게 된다. 한편, 본 발명의 일 실시예에 따르면, 밀봉부재(250)는 후술하는 브레이크 디스크(400)를 휠허브에 장착할 때 간섭이 발생하는 것을 방지하기 위해 휠허브에 형성된 장착부(218)로부터 반경방향으로 외측 돌출되지 않도록 구성될 수 있다[예컨대, 도 5에 도시된 바와 같이, 휠허브의 장착부에 인접한 휠허브의 외주면(219) 보다 반경방향 외측으로 돌출되지 않도록 구성]According to one embodiment of the present invention, the hub flange 212 of the wheel hub 210 may be provided with a mounting portion 218 for mounting the aforementioned sealing member 250. For example, the mounting portion 218 may be provided at a position radially outward of the cross-sectional teeth provided on the hub flange 212. According to one embodiment of the present invention, the bottom surface of the mounting portion 218 on which the sealing member 250 is mounted may be formed in a structure capable of preventing the mounted sealing member 250 from being detached. For example, the mounting portion 218 on which the sealing member 250 is mounted may be formed in an inclined surface shape in which the diameter increases as the bottom surface thereof moves toward the wheel side, as shown in FIG. 5. According to this structure, the sealing member 250 mounted on the mounting portion of the hub flange 212 can be prevented from being arbitrarily engaged by being engaged by the inclined bottom structure of the mounting portion. On the other hand, according to an embodiment of the present invention, the sealing member 250 is radial from the mounting portion 218 formed on the wheel hub to prevent the interference occurs when mounting the brake disk 400, which will be described later to the wheel hub May be configured not to protrude outwardly (for example, as shown in FIG. 5, so as not to protrude radially outward from the outer circumferential surface 219 of the wheel hub adjacent to the mounting portion of the wheel hub).

본 발명의 일 실시예에 따르면, 휠허브(210)는 휠측 단부에 축방향으로 연장하는 휠파일럿(216)을 더 구비할 수 있다. 휠파일럿(216)은 도 5에 도시된 바와 같이 휠허브(210)에 휠(300)을 체결할 때 휠(300)의 중심부에 형성된 관통구멍을 통해 삽입되어 휠(300)이 휠허브(310)의 중심축을 따라 체결 위치로 잘 이동될 수 있도록 안내하는 기능을 수행할 수 있다. 본 발명의 일 실시예에 따르면, 휠파일럿(216)은 외주면에 나사산을 구비해 내부에 대응하는 나사산을 구비한 클램핑 부재(340)를 나사결합함으로써 휠(300)을 휠허브(210)에 고정시키도록 구성될 수 있다. 이러한 구조에 의하면, 휠(300)은 중심부서 하나의 클램핑 부재(340)를 휠허브(210)의 휠파일럿(216)에 나사결합하는 작업만으로 휠(300)과 휠허브(210) 사이에 축방향 고정력을 제공해 휠(300)을 휠허브(210)에 안정적으로 고정시킬 수 있게 된다.According to one embodiment of the invention, the wheel hub 210 may further include a wheel pilot 216 extending in the axial direction at the wheel side end. The wheel pilot 216 is inserted through the through hole formed in the center of the wheel 300 when the wheel 300 is fastened to the wheel hub 210 as shown in Figure 5 so that the wheel 300 wheel hub 310 It can perform a function of guiding the well to be moved to the fastening position along the central axis. According to an embodiment of the present invention, the wheel pilot 216 has a thread on the outer circumferential surface to screw the clamping member 340 having a thread corresponding to the inside to fix the wheel 300 to the wheel hub 210. It can be configured to. According to this structure, the wheel 300 has a shaft between the wheel 300 and the wheel hub 210 only by screwing one clamping member 340 at the center of the wheel pilot 216 of the wheel hub 210. It is possible to stably fix the wheel 300 to the wheel hub 210 by providing a direction fixing force.

본 발명의 일 실시예에 따르면, 휠허브(210)의 허브 플랜지(212)에는 브레이크 디스크(400)가 결합될 수 있다(도 3 내지 도 5 참조). 브레이크 디스크(400)는 통상의 차량용 휠베어링과 유사한 형상으로 구성될 수 있으며, 휠허브(210)의 허브 플랜지(212)에 형성된 체결구멍을 통해 체결볼트 등을 이용해 결합될 수 있다. 도면에 도시된 실시예의 경우에는 브레이크 디스크가 휠허브의 차륜측에서 결합되도록 구성되어 있으나, 브레이크 디스크는 이와 반대로 휠허브의 차체측에서 결합되도록 구성되어도 무방하다.According to an embodiment of the present invention, the brake disc 400 may be coupled to the hub flange 212 of the wheel hub 210 (see FIGS. 3 to 5). The brake disc 400 may be configured in a shape similar to that of a conventional vehicle wheel bearing, and may be coupled using a fastening bolt or the like through a fastening hole formed in the hub flange 212 of the wheel hub 210. In the embodiment shown in the figure, the brake disc is configured to be coupled at the wheel side of the wheel hub, but the brake disc may be configured to be coupled at the vehicle body side of the wheel hub.

이상에서는 종동륜용 휠베어링 조립체를 이용해 본 발명의 일 실시예에 따른 휠베어링 및 휠베어링 조립체를 설명하였으나, 본 발명의 일 실시예에 따른 휠베어링 및 휠베어링 조립체는 도 9와 같이 휠허브의 내주면에 형성된 스플라인 구조에 등속조인트(500)의 중심축(510)을 결합해 구동력을 전달하거나 도 10과 같이 휠베어링과 등속조인트의 단면에 형성된 페이스 스플라인 구조(520)를 통해 구동장치의 구동력을 휠베어링으로 전달하도록 구성된 구동륜용 휠베어링 조립체에도 적용될 수 있다.In the above described the wheel bearing and the wheel bearing assembly according to an embodiment of the present invention by using a wheel bearing assembly for a driven wheel, the wheel bearing and the wheel bearing assembly according to an embodiment of the present invention is a wheel hub as shown in FIG. By combining the central axis 510 of the constant velocity joint 500 with the spline structure formed on the inner circumferential surface to transfer the driving force or through the face spline structure 520 formed on the cross section of the wheel bearing and the constant velocity joint as shown in FIG. It can also be applied to a wheel bearing assembly for a drive wheel configured to transmit to the wheel bearing.

뿐만 아니라, 전술한 실시예의 경우에는 휠허브에 하나의 내륜이 장착되는 3세대 구조의 휠베어링을 이용해 발명을 설명하였으나, 본 발명의 일 실시예에 따른 휠베어링 및 휠베어링 조립체는 3세대 구조 이외에 임의의 다양한 구조의 휠베어링에도 물론 적용될 수 있다.In addition, in the above-described embodiment, the invention has been described using a wheel bearing having a third generation structure in which one inner ring is mounted on the wheel hub, but the wheel bearing and the wheel bearing assembly according to an embodiment of the present invention may be used in addition to the third generation structure. It can of course also be applied to wheel bearings of any of various structures.

이상 본 발명을 구체적인 구성요소 등과 같은 특정 사항들과 한정된 실시예에 의해 설명하였으나, 이들 실시예들은 본 발명의 보다 전반적인 이해를 돕기 위해서 제공된 것일 뿐, 본 발명이 이에 한정되는 것은 아니며, 본 발명이 속하는 기술분야에서 통상적인 지식을 가진 자라면 이러한 기재로부터 다양한 수정 및 변형을 꾀할 수 있다.Although the present invention has been described with specific details and limited embodiments, such as specific components, these embodiments are provided only to help a more general understanding of the present invention, and the present invention is not limited thereto. Those skilled in the art can make various modifications and variations from this description.

따라서, 본 발명의 사상은 앞서 설명된 실시예들에 국한되어 정해져서는 아니 되며, 후술하는 청구범위뿐만 아니라 이 청구범위에 균등하게 또는 등가적으로 변형된 모든 것들은 본 발명의 사상의 범주에 속한다고 할 것이다.Therefore, the spirit of the present invention should not be limited to the above-described embodiments, and all the equivalents or equivalents of the claims as well as the following claims are included in the scope of the spirit of the present invention. something to do.

[부호의 설명][Description of the code]

100: 휠베어링 조립체100: wheel bearing assembly

200: 휠베어링200: wheel bearing

210: 휠허브210: wheel hub

212: 허브 플랜지212: hub flange

214: 단차부214: stepped portion

215: (휠허브의 허브 플랜지에 형성되는) 단면 치형부215: cross-sectional teeth (formed on hub flange of wheel hub)

216: 휠파일럿216: wheel pilot

220: 외륜220: paddle

222: 장착 플랜지222: mounting flange

230: 내륜230: inner ring

240: 전동체240: rolling element

250: 밀봉부재250: sealing member

252: (밀봉부재의) 와이어링부252: wiring section (of the sealing member)

254: (밀봉부재의) 탄성부254: elastic part (of the sealing member)

254a: (밀봉부재 탄성부의) 씰링립254a: sealing lip (sealing member elastic part)

300: 휠300: wheel

310: 휠보스310: wheel boss

315: (휠에 형성되는) 대응 단면 치형부315: corresponding cross-sectional teeth (formed on wheel)

320: 휠아암320: wheel arm

330: 휠림330: wheel rim

340: 클램핑 부재340: clamping member

400: 브레이크 디스크400: brake disc

500: 등속조인트500: constant velocity joint

510: (등속조인트의) 중심축510: central axis (of constant velocity joint)

520: (등속조인트와 휠허브 사이의) 페이스 스플라인 구조520: face spline structure (between constant joint and wheel hub)

Claims (11)

휠이 장착되어 휠과 함께 회전하는 휠허브와,A wheel hub equipped with a wheel that rotates with the wheel, 상기 휠허브에 압입되어 장착되는 하나 이상의 내륜과,At least one inner ring press-fitted to the wheel hub; 상기 하나 이상의 내륜의 반경방향 외측에 장착되며 외주면에 차체에 장착되는 장착 플랜지를 구비하는 외륜과,An outer ring mounted on a radially outer side of the at least one inner ring and having a mounting flange mounted on a vehicle body on an outer circumferential surface thereof; 상기 하나 이상의 내륜과 상기 외륜 사이에 장착되는 하나 이상의 전동체를 포함하고,At least one rolling element mounted between the at least one inner ring and the outer ring, 상기 휠허브는 반경방향 외측으로 연장하는 허브 플랜지를 포함하고,The wheel hub comprises a hub flange extending radially outward, 상기 허브 플랜지는 휠측에 위치하는 단면에 단면 치형부가 구비되어 휠에 형성된 대응 단면 치형부에 치형결합되도록 구성되고,The hub flange is configured to be tooth coupled to the corresponding cross-sectional teeth formed on the wheel is provided with a cross-sectional teeth in the cross section located on the wheel side, 상기 휠허브의 허브 플랜지에 구비되는 단면 치형부는 복수의 치형(tooth)이 원주방향으로 이격되어 배치되도록 구성되고,Cross-sectional teeth provided on the hub flange of the wheel hub is configured such that a plurality of teeth are arranged spaced apart in the circumferential direction, 상기 허브 플랜지의 단면 치형부의 반경방향 외측에는 상기 허브 플랜지와 휠 사이에 형성되는 간극을 밀폐하는 밀봉부재가 구비되는,On the radially outer side of the cross-sectional teeth of the hub flange is provided with a sealing member for sealing a gap formed between the hub flange and the wheel, 휠베어링.Wheel bearings. 제1항에 있어서,The method of claim 1, 상기 휠허브의 허브 플랜지는 상기 단면 치형부의 반경방향 외측에 밀봉부재를 장착하기 위한 장착부를 구비하고,The hub flange of the wheel hub has a mounting portion for mounting the sealing member on the radially outer side of the cross-sectional teeth, 상기 장착부는 밀봉부재가 장착되는 바닥면의 직경이 휠측으로 갈수록 증가되는 형상으로 형성되는, The mounting portion is formed in a shape in which the diameter of the bottom surface on which the sealing member is mounted increases toward the wheel side, 휠베어링.Wheel bearings. 제2항에 있어서,The method of claim 2, 상기 장착부는 밀봉부재가 장착되는 바닥면이 휠측으로 갈수록 직경이 증가되는 경사면 형상으로 형성되는, The mounting portion is formed in an inclined surface shape in which the diameter of the bottom surface is mounted toward the wheel side is mounted, the sealing member, 휠베어링.Wheel bearings. 제1항에 있어서,The method of claim 1, 상기 밀봉부재는 원형 단면의 와이어가 링형상으로 형성된 와이어링부와 상기 와이어링부를 둘러싸는 탄성부로 구성되는,The sealing member is composed of a wire portion having a circular cross section in a ring shape and an elastic portion surrounding the wiring portion, 휠베어링.Wheel bearings. 제4항에 있어서,The method of claim 4, wherein 상기 밀봉부재의 탄성부에서 상기 장착부에 접촉하는 면은 상기 장착부에 대응되는 형상으로 형성되는,The surface in contact with the mounting portion in the elastic portion of the sealing member is formed in a shape corresponding to the mounting portion, 휠베어링.Wheel bearings. 제5항에 있어서,The method of claim 5, 상기 와이어링부는 일부가 개방된 링형상의 구조로 형성되며,The wiring part is formed in a ring-shaped structure with a portion open. 상기 와이어링부의 개방된 부분은 용접을 통해 연결되도록 구성되는,The open portion of the wiring portion is configured to be connected via welding, 휠베어링.Wheel bearings. 제1항에 있어서,The method of claim 1, 상기 휠허브의 허브 플랜지에 구비되는 단면 치형부의 치형은 휠에 형성되는 대응 단면 치형부의 치형보다 작은 부피를 갖도록 형성되는,Tooth teeth of the cross-sectional teeth provided on the hub flange of the wheel hub are formed to have a smaller volume than the teeth of the corresponding cross-sectional teeth formed on the wheel, 휠베어링.Wheel bearings. 제7항에 있어서,The method of claim 7, wherein 상기 휠허브의 허브 플랜지에 구비되는 단면 치형부의 치형은 휠에 구비되는 대응 단면 치형부의 치형과 1:1.2 내지 1:1.4 범위의 부피비를 갖도록 구성되는,The teeth of the sectional teeth provided on the hub flange of the wheel hub are configured to have a volume ratio in the range of 1: 1.2 to 1: 1.4 with the teeth of the corresponding sectional teeth provided on the wheel. 휠베어링.Wheel bearings. 제1항에 있어서,The method of claim 1, 상기 휠허브의 허브 플랜지에 구비되는 단면 치형부는 90mm 이상 130mm 이하의 피치원 직경을 갖도록 형성되는,Cross-sectional teeth provided on the hub flange of the wheel hub is formed to have a pitch circle diameter of 90mm or more, 130mm or less, 휠베어링.Wheel bearings. 제1항 내지 제9항 중 어느 한 항에 따른 휠베어링을 구비하는 휠베어링 조립체이며,A wheel bearing assembly having a wheel bearing according to any one of claims 1 to 9, 상기 휠베어링의 휠허브에 결합되는 휠을 더 포함하며,Further comprising a wheel coupled to the wheel hub of the wheel bearing, 상기 휠은 상기 휠허브의 허브 플랜지에 구비되는 단면 치형부와 치형결합되는 대응 단면 치형부를 구비하고,The wheel has a corresponding cross-sectional tooth that is tooth-coupled with the cross-sectional tooth provided in the hub flange of the wheel hub, 상기 휠에 구비되는 대응 단면 치형부는 복수의 치형(tooth)이 원주방향으로 이격되어 배치되도록 구성되는,Corresponding cross-sectional teeth provided on the wheel are configured such that a plurality of teeth are spaced apart in the circumferential direction, 휠베어링 조립체.Wheel bearing assembly. 제10항에 있어서,The method of claim 10, 상기 휠에 구비되는 단면 치형부는 90mm 이상 130mm 이하의 피치원 직경을 갖도록 형성되는,Cross section teeth provided on the wheel is formed to have a pitch circle diameter of 90mm or more, 130mm or less, 휠베어링 조립체.Wheel bearing assembly.
PCT/KR2018/006489 2018-06-07 2018-06-07 Wheel bearing and wheel bearing assembly Ceased WO2019235662A1 (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080148893A1 (en) * 2005-04-08 2008-06-26 Schaeffler Kg Collar Having End-Side Teeth For a Drivable Wheel Hub
KR20080064715A (en) * 2007-01-04 2008-07-09 아크티에볼라게트 에스케이후 Seal between hub bearing unit of vehicle wheel and constant velocity joint
KR20120058934A (en) * 2010-11-30 2012-06-08 현대위아 주식회사 Vehicle drive wheel axle
KR20130116771A (en) * 2012-04-16 2013-10-24 현대위아 주식회사 Device for combining hub bearing assembly and wheel disk
KR20150122539A (en) * 2014-04-23 2015-11-02 주식회사 일진글로벌 A driving wheel bearing and manufacturing method thereof

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080148893A1 (en) * 2005-04-08 2008-06-26 Schaeffler Kg Collar Having End-Side Teeth For a Drivable Wheel Hub
KR20080064715A (en) * 2007-01-04 2008-07-09 아크티에볼라게트 에스케이후 Seal between hub bearing unit of vehicle wheel and constant velocity joint
KR20120058934A (en) * 2010-11-30 2012-06-08 현대위아 주식회사 Vehicle drive wheel axle
KR20130116771A (en) * 2012-04-16 2013-10-24 현대위아 주식회사 Device for combining hub bearing assembly and wheel disk
KR20150122539A (en) * 2014-04-23 2015-11-02 주식회사 일진글로벌 A driving wheel bearing and manufacturing method thereof

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