WO2020204671A1 - Wheel bearing having improved wheel mounting flange structure - Google Patents

Wheel bearing having improved wheel mounting flange structure Download PDF

Info

Publication number
WO2020204671A1
WO2020204671A1 PCT/KR2020/004599 KR2020004599W WO2020204671A1 WO 2020204671 A1 WO2020204671 A1 WO 2020204671A1 KR 2020004599 W KR2020004599 W KR 2020004599W WO 2020204671 A1 WO2020204671 A1 WO 2020204671A1
Authority
WO
WIPO (PCT)
Prior art keywords
wheel
connection part
wheel bearing
rotating element
present
Prior art date
Application number
PCT/KR2020/004599
Other languages
French (fr)
Korean (ko)
Inventor
김진석
이범수
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 WO2020204671A1 publication Critical patent/WO2020204671A1/en

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B27/00—Hubs
    • B60B27/0015—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

Definitions

  • the present invention relates to a wheel bearing that supports a vehicle wheel by rotatably mounting it to a vehicle body, and more particularly, it is configured to improve the structure of the wheel mounting flange on which the wheel is mounted, thereby reducing the weight of the wheel bearing and improving operational stability. It relates to wheel bearings.
  • a bearing is a component that supports a rotating element in a rotating device so as to be able to rotate relative to a non-rotating element, and a wheel bearing is used to support and install a vehicle wheel in a rotatable manner with respect to a vehicle body.
  • FIG. 1 a structure of a wheel bearing 10 used to support a wheel of a vehicle is illustrated by way of example.
  • the wheel bearing 10 is connected to the non-rotating element 30 fixed to the vehicle body through the rolling element 40 to the rotating element 20 on which the vehicle wheel is mounted. It is configured to support the wheel mounted on the rotating element 20 in a rotatable state with respect to the vehicle body, and the wheel mounting flange 22 extending in the radial direction is formed on the rotating element 20 of the wheel bearing 10 It is configured to mount the wheel to the rotating element 20 by fastening the hub bolt 50 or the like to the mounting flange 22.
  • the wheel mounting flange 22 provided on the rotating element 20 of the wheel bearing 10 has been formed in a cylindrical structure that extends along the circumferential direction, but the weight of the vehicle parts is reduced and fuel economy is improved through this.
  • This wheel mounting flange (flower type flange) is composed of, for example, a bolt mounting portion 24 to which a hub bolt is mounted and a connection portion 26 extending therebetween, as shown in FIG. 2, and is predetermined on the outer peripheral surface of the connection portion 26.
  • a recess 28 that is depressed inward by the curvature R of is formed to reduce the weight of the wheel mounting flange 22.
  • a pinhole (not shown) is formed in a part of the connection part 26 in order to insert a positioning pin used to mount a brake disk, etc. to the wheel mounting flange 22.
  • weight imbalance occurs in the wheel mounting flange 22 due to the pinhole and the surrounding structure, and this may cause vibration and noise while eccentricity is generated in the wheel mounting flange when the wheel rotates.
  • the present invention is to solve the above-described conventional problem, by forming a connection portion provided between the bolt mounting portions in the wheel mounting flange provided on the rotating element of the wheel bearing in a plurality of shapes (not all of the same shape) to part of the connection portion.
  • a connection portion provided between the bolt mounting portions in the wheel mounting flange provided on the rotating element of the wheel bearing in a plurality of shapes (not all of the same shape) to part of the connection portion.
  • a typical configuration of the present invention for achieving the above object is as follows.
  • a wheel bearing for rotatably mounting and supporting a vehicle wheel on a vehicle body.
  • the wheel bearing according to an embodiment of the present invention includes a rotating element that is mounted on a vehicle wheel and rotates with the wheel, a non-rotating element mounted on a chassis part of a vehicle and fixed to the vehicle body, and between the rotating element and the non-rotating element. It may include one or more rolling elements that are interposed and rotatably support the rotating element with respect to the non-rotating element.
  • a wheel mounting flange used to mount a wheel is provided on the rotating element, and a connection portion extending between the bolt mounting portion and the bolt mounting portion to which the hub bolt is fastened is spaced apart along the circumferential direction. It can be provided in plural. According to an embodiment of the present invention, at least one of the connection portions is provided with a pinhole into which a positioning pin for mounting a brake disk or a wheel is inserted, and the connection portion may be formed in a plurality of shapes and areas.
  • connection portion may be formed to have a thinner thickness than the bolt mounting portion.
  • connection part may include a first connection part in which a pinhole is formed, a second connection part disposed adjacent to both sides of the first connection part, and a third connection part spaced apart from the first connection part.
  • outer circumferential surfaces of the first connection part, the second connection part, and the third connection part may be configured to be located radially inward than the outer circumferential surface of the bolt mounting part.
  • a recess recessed radially inward with a curved surface having a predetermined radius of curvature may be provided on the outer circumferential surfaces of the second connection portion and the third connection portion.
  • the radius of curvature of the recess formed on the outer circumferential surface of the second connection portion may be different from the radius of curvature of the recess formed on the outer circumferential surface of the third connection portion.
  • the radius of curvature of the recess formed on the outer circumferential surface of the third connecting portion may be larger than the radius of curvature of the recess formed on the outer circumferential surface of the second connecting portion.
  • the rotating element of the wheel bearing includes a wheel hub on which the wheel is mounted and at least one inner ring that is press-fitted to and mounted on the wheel hub, and the non-rotating element of the wheel bearing is coupled to the chassis part of the vehicle. It is formed as an outer ring, and the wheel mounting flange may be configured to be provided on the wheel hub.
  • wheel bearing according to the present invention may further include other additional configurations within a range that does not impair the technical spirit of the present invention.
  • the connecting portion formed between the bolt mounting portions is formed in a plurality of shapes and areas rather than a single shape to form a pinhole and a retention portion in a part of the connecting portion, so that the connecting portion of the other side is By offsetting this weight change, it is possible to prevent eccentric rotation and vibration/noise caused by the wheel mounting flange when the wheel is rotated.
  • the wheel bearing according to an embodiment of the present invention is configured to compensate for the weight change of the connection part caused by the pinhole and the retention part through the other connection part, and the weight balance is adjusted within the same plane to reduce the eccentricity of the wheel mounting flange. It becomes possible to suppress more easily and effectively.
  • FIG. 1 shows an exemplary structure of a conventional wheel bearing.
  • FIG. 2 exemplarily shows a wheel mounting flange (hub flange) of the wheel bearing shown in FIG. 1.
  • FIG. 3 exemplarily shows the overall structure of a wheel bearing according to an embodiment of the present invention.
  • FIG. 4 illustrates an exemplary cross-sectional structure of a wheel bearing according to an embodiment of the present invention.
  • FIG. 5 illustrates an exemplary structure of a wheel hub of a wheel bearing according to an embodiment of the present invention.
  • FIG. 6 is an exemplary view showing a wheel hub of a wheel bearing according to an embodiment of the present invention as viewed from the vehicle body side.
  • FIG. 7 illustrates an exemplary wheel hub structure of a wheel bearing according to another embodiment of the present invention.
  • the structure of the wheel bearing 100 according to an embodiment of the present invention is illustrated by way of example.
  • the wheel bearing 100 according to an embodiment of the present invention may be formed in an overall similar manner to a conventional wheel bearing.
  • the wheel bearing 100 according to an embodiment of the present invention includes a plurality of rolling elements 400 in the non-rotating element 300 connected to the vehicle body in which the rotating element 200 on which the wheel is mounted, like the conventional wheel bearing described above. ) May be configured to be supported rotatably through.
  • the rotating element 200 may include a wheel hub 210 on which a wheel is mounted and an inner ring 220 that is press-fitted to and mounted on the wheel hub 210, and a non-rotating element 300 may be composed of an outer ring or the like coupled to a chassis part of a vehicle and fixed to the vehicle body.
  • the wheel bearing according to the exemplary embodiment of the present invention is not limited to this structure, and may be formed by being transformed into various other structures applicable to ordinary wheel bearings.
  • the wheel hub 210 constituting the rotating element 200 may be formed in a substantially cylindrical shape extending along the axial direction, and near the end of the wheel side of the wheel hub 210 A wheel mounting flange 230 may be provided.
  • the wheel mounting flange 230 may be formed to extend radially outward from the outer circumferential surface of the wheel hub 210, and has one or more bolt mounting holes along the circumferential direction, and the wheel and/or brake using the hub bolt 500 It may be used to mount the disk to the wheel hub 210.
  • a stepped portion is formed at an end of the vehicle body side of the wheel hub 210 to be configured to mount the inner ring 220, and a track surface (inner track surface) is formed on a part of the outer circumferential surface of the wheel hub 210 to form a rolling element ( 400) may be configured to support from the inside in the radial direction.
  • the inner ring 220 may be configured to be mounted by pressing one or more one side of the wheel hub 210.
  • the inner ring 220 is plastically deformed as shown in FIG. 4 or the end of the wheel hub 210 in a state that is pressed into a step portion formed at the end of the vehicle body side of the wheel hub 210. It may be configured to be seated and maintained on the wheel hub 210 by fastening a nut or the like at the end of the vehicle body side.
  • the outer circumferential surface of the inner ring 220 may be provided with a raceway surface (inner raceway surface) to which the rolling element 400 contacts, and may be configured to support the rolling element from the inside in the radial direction.
  • one raceway surface for supporting the rolling element is directly formed on a part of the outer circumferential surface of the wheel hub.
  • the wheel bearing according to an embodiment of the present invention is different from that in the wheel hub. It may be configured to form the raceway surface (inner raceway surface) of the rolling element through two inner rings by installing two inner rings, and it is modified to any other arbitrary wheel bearing structure, such as being configured to install the inner ring inside the radial direction of the wheel hub. May be implemented.
  • the outer ring constituting the non-rotating element 300 is provided with a vehicle body side mounting flange 310 for mounting the wheel bearing 100 to the vehicle body on the outer circumferential surface, and the rolling element 400 on the inner circumferential surface.
  • a raceway surface outer raceway surface
  • the raceway surface (outer raceway surface) formed on the inner circumferential surface of the outer ring cooperates with the raceway surface (inner raceway surface) formed on the wheel hub 210 and/or the inner ring 220 to form a rolling element 400 between the raceways. It may be configured to receive and support.
  • the rolling element 400 is disposed between the rotating element 200 and the non-rotating element 300, and the non-rotating element 300 is coupled to the wheel mounted on the rotating element 200 It can perform a function of rotatably supporting the vehicle body.
  • the wheel mounting flange 230 provided on the rotating element 200 includes a connection part 250 extending between the bolt mounting part 240 and the bolt mounting part 240 into which the hub bolt is inserted.
  • a bolt mounting hole 245 is provided in the bolt mounting part 240 to insert a hub bolt 500 into the bolt mounting hole 245 to mount a wheel (and/or a brake disk) to a wheel It may be configured to be fastened to the flange 230.
  • the wheel mounting flange 230 may be formed with a plurality of bolt mounting portions 240 spaced apart at equal intervals along the circumferential direction, and the bolt mounting portion 240 is attached to the hub bolt 500. It may be formed with a relatively thick thickness to provide sufficient coupling length and fastening force.
  • the connection part 250 located between the bolt mounting parts 240 and to which a relatively small load is applied may be configured to have a relatively thin thickness compared to the bolt mounting part 240 for weight reduction.
  • connection part 250 may be formed in a structure in which an outer circumferential surface is recessed radially inward compared to the outer circumferential surface of the bolt mounting part 240. According to this structure, the weight of the wheel hub can be further reduced, so that the weight of the wheel bearing and improvement of the fuel efficiency of the vehicle can be further promoted.
  • connection parts 250 are provided with a pinhole 260 into which a positioning pin to assist positioning when a wheel and/or a brake disk is mounted on the wheel mounting flange 230 is inserted. Can be.
  • a through-shaped pinhole 260 is formed in some of the connection portions 250 formed between the bolt mounting portions 240 of the wheel mounting flange 230, and a predetermined thickness is secured around the pinhole 260.
  • a retention portion 270 extending in the radial direction may be formed.
  • connection parts 250 when the pinhole 260 and/or the retention part 270 are formed in some of the connection parts 250 as described above, the area and weight of the connection part 250 are changed, resulting in a weight imbalance in the wheel mounting flange 230. There is a risk of occurrence. Therefore, if all the connecting portions are formed in the same shape as in the conventional wheel bearing shown in FIG. 2, eccentricity occurs in the wheel mounting flange when the wheel rotates due to the change in shape and weight of the connecting portion in which the pinhole is formed. There is a risk of noise and vibration.
  • the wheel bearing 100 does not form the connection flange 250 formed on the vehicle mounting flange 230 in the same shape, and has a plurality of connection flanges 250. It is configured to have the shape and area of.
  • the wheel bearing 100 is arranged so that the five hub bolts 500 are mounted along the circumferential direction, and the five bolt mounting portions 240 are spaced apart from each other at equal intervals. It is configured to form five connection parts 250 between the bolt mounting part 240.
  • the wheel bearing 100 of the embodiment illustrated in FIGS. 3 to 6 includes a first connection part 250a in which a pinhole 260 is formed, and a second connection part disposed adjacent to both sides of the first connection part 250a ( 250b), it may be configured to include a third connection portion 250c disposed to be spaced apart from the first connection portion 250a (that is, located on the opposite side of the first connection portion 250a around the central axis).
  • the connection portion disposed adjacently refers to a connection portion disposed on both sides with one bolt mounting portion in between]
  • the wheel bearing 100 shown in FIGS. 3 to 6 includes one first connection part 250a, two second connection parts 250b disposed adjacent to the first connection part 250a, and a first connection part. It is configured to include two third connecting portions 250c that are spaced apart from the 250a.
  • the wheel bearing 100 since the first connection part 250a is provided with a pinhole 260 and/or a retention part 270 extending around the pinhole 260 and the area and weight of the connection part may vary, the wheel bearing 100 according to an embodiment of the present invention includes a second connection part 250b and a first connection part 250a adjacent to the first connection part 250a. It is configured to form the third connection portion 250c, which is spaced apart from 250a) and located on the opposite side, in different shapes and areas.
  • the wheel bearing 100 has a predetermined radius of curvature on the outer peripheral surfaces of the second connection portion 250b and the third connection portion 250c of the wheel mounting flange 230 for weight reduction.
  • the recessed recess 252 is configured to be formed, and the radius of curvature r1 of the recess formed on the outer peripheral surface of the second connection part 250b and the radius of curvature of the recess formed on the outer peripheral surface of the third connection part 250c (r2) is formed differently to adjust the load center of the wheel mounting flange 230 by adjusting the radius of curvature to suppress the eccentricity of the wheel mounting flange 230.
  • the radius of curvature r1 of the recess formed in the second connection part 250b is the radius of curvature r2 of the recess formed in the third connection part 250c.
  • the wheel bearing according to an embodiment of the present invention may have various shapes and numbers of bolt mounting portions and extension portions provided on the wheel mounting flange.
  • the wheel bearing 100 may be configured to mount a wheel to the wheel hub 210 using an even number (4) of hub bolts as shown in FIG. 7.
  • a first connection part 250a and a first connection part 250b in which a pinhole 260 is formed in the wheel mounting flange 230 It can be configured to have two second connection parts 250b disposed adjacent to and one third connection part 250c disposed to be spaced apart from the first connection part 250a, and even in the case of the embodiment shown in FIG.
  • the wheel bearing according to the present invention was described using a so-called third-generation wheel bearing structure in which one inner ring is press-fitted to the wheel hub, but the wheel bearing according to the present invention has two It may be composed of a wheel bearing of another structure, such as a so-called 2.5-generation wheel bearing on which an inner ring is mounted, or a so-called second-generation wheel bearing in which the wheel hub functions as an outer member.

Landscapes

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

Abstract

According to an embodiment of the present invention, provided is a wheel bearing which rotatably mounts a wheel of a vehicle to the vehicle body, and supports the wheel. The wheel bearing according to an embodiment of the present invention may comprise: a rotary element to which a wheel of a vehicle is mounted, and which rotates together with the wheel; a non-rotary element which is mounted to a chassis component of the vehicle and thereby fixed to the vehicle body; and one or more rolling bodies which are interposed between the rotary element and the non-rotary element, and support the rotary element such that the rotary element can rotate relative to the non-rotary element. According to an embodiment of the present invention, a wheel mounting flange used to mount the wheel may be provided to the rotary element, and a plurality of bolt mounting parts to which hub bolts are fastened and a plurality of connection parts which extend between the bolt mounting parts may be arranged in the wheel mounting flange so as to be spaced apart from each other in the circumferential direction. According to an embodiment of the present invention, brake discs or pin holes into which positioning pins for wheel mounting are inserted can be provided in one or more of the connection parts, and the connection parts can be formed in a plurality of shapes and surface areas.

Description

개선된 차륜 장착 플랜지 구조를 갖는 휠베어링Wheel bearing with improved wheel mounting flange structure
본 발명은 차량의 차륜을 차체에 회전가능하게 장착하여 지지하는 휠베어링에 관한 것으로, 보다 상세하게는 차륜이 장착되는 차륜 장착 플랜지의 구조를 개선해 휠베어링의 경량화 및 작동 안정성을 향상시킬 수 있도록 구성된 휠베어링에 관한 것이다.The present invention relates to a wheel bearing that supports a vehicle wheel by rotatably mounting it to a vehicle body, and more particularly, it is configured to improve the structure of the wheel mounting flange on which the wheel is mounted, thereby reducing the weight of the wheel bearing and improving operational stability. It relates to wheel bearings.
베어링은 회전장치에서 회전요소를 비회전요소에 대해 상대회전 가능하게 지지해주는 부품으로, 휠베어링은 차량의 차륜을 차체에 대해 회전 가능하게 장착하여 지지하는데 이용된다.A bearing is a component that supports a rotating element in a rotating device so as to be able to rotate relative to a non-rotating element, and a wheel bearing is used to support and install a vehicle wheel in a rotatable manner with respect to a vehicle body.
예컨대, 도 1을 참조하면 차량의 차륜을 지지하는데 이용되는 휠베어링(10)의 구조가 예시적으로 도시되어 있다. 도 1에 도시되어 있는 바와 같이, 휠베어링(10)은 차량의 차륜(wheel)이 장착되는 회전요소(20)가 차체에 고정되는 비회전요소(30)에 전동체(40)를 통해 연결되어 회전요소(20)에 장착된 차륜을 차체에 대해 회전 가능한 상태로 지지하도록 구성되며, 휠베어링(10)의 회전요소(20)에는 반경방향을 따라 연장하는 차륜 장착 플랜지(22)가 형성되어 차륜 장착 플랜지(22)에 허브 볼트(50) 등을 체결해 차륜을 회전요소(20)에 장착하도록 구성된다.For example, referring to FIG. 1, a structure of a wheel bearing 10 used to support a wheel of a vehicle is illustrated by way of example. As shown in FIG. 1, the wheel bearing 10 is connected to the non-rotating element 30 fixed to the vehicle body through the rolling element 40 to the rotating element 20 on which the vehicle wheel is mounted. It is configured to support the wheel mounted on the rotating element 20 in a rotatable state with respect to the vehicle body, and the wheel mounting flange 22 extending in the radial direction is formed on the rotating element 20 of the wheel bearing 10 It is configured to mount the wheel to the rotating element 20 by fastening the hub bolt 50 or the like to the mounting flange 22.
한편, 휠베어링(10)의 회전요소(20)에 구비되는 차륜 장착 플랜지(22)는 통상적으로 원주방향을 따라 연장하는 원통형의 구조로 형성되어 왔으나, 차량 부품의 중량 감소 및 이를 통한 연비 향상이 지속적으로 요구되면서 최근에는 차륜 장착 플랜지(22)의 외주면에 반경방향 내측으로 함몰되는 리세스 등을 형성해 차륜 장착 플랜지(22)의 중량을 저감하려는 시도가 이루어지고 있다(소위, 플라워 타입 플랜지).On the other hand, the wheel mounting flange 22 provided on the rotating element 20 of the wheel bearing 10 has been formed in a cylindrical structure that extends along the circumferential direction, but the weight of the vehicle parts is reduced and fuel economy is improved through this. In recent years, attempts have been made to reduce the weight of the wheel mounting flange 22 by forming a recess or the like that is recessed radially inward on the outer peripheral surface of the wheel mounting flange 22 as it is continuously required (so-called flower type flange).
이러한 차륜 장착 플랜지(플라워 타입 플랜지)는 예컨대 도 2에 도시된 바와 같이 허브 볼트가 장착되는 볼트 장착부(24)와 이들 사이에서 연장하는 연결부(26)로 구성되며, 연결부(26)의 외주면에 소정의 곡률(R)로 내측으로 함몰되는 리세스(28)가 형성되어 차륜 장착 플랜지(22)의 중량을 감소시키도록 구성되게 된다.This wheel mounting flange (flower type flange) is composed of, for example, a bolt mounting portion 24 to which a hub bolt is mounted and a connection portion 26 extending therebetween, as shown in FIG. 2, and is predetermined on the outer peripheral surface of the connection portion 26. A recess 28 that is depressed inward by the curvature R of is formed to reduce the weight of the wheel mounting flange 22.
그런데, 이러한 구조의 휠베어링(10)의 경우에는 차륜 장착 플랜지(22)에 브레이크 디스크 등을 장착하는데 이용되는 위치결정핀을 삽입하기 위해 연결부(26)의 일부에 핀홀(미도시) 등을 형성할 경우 핀홀 및 주변 구조에 의해 차륜 장착 플랜지(22)에 중량 불균형이 발생하게 되고, 이로 인해 차륜의 회전시 차륜 장착 플랜지에 편심이 발생하면서 진동 및 소음이 야기될 수 있다.However, in the case of the wheel bearing 10 having such a structure, a pinhole (not shown) is formed in a part of the connection part 26 in order to insert a positioning pin used to mount a brake disk, etc. to the wheel mounting flange 22. In this case, weight imbalance occurs in the wheel mounting flange 22 due to the pinhole and the surrounding structure, and this may cause vibration and noise while eccentricity is generated in the wheel mounting flange when the wheel rotates.
본 발명은 전술한 종래의 문제점을 해소하기 위한 것으로, 휠베어링의 회전요소에 구비되는 차륜 장착 플랜지에서 볼트 장착부 사이에 구비되는 연결부를 (모두 동일한 형상이 아닌) 복수의 형상으로 형성해 연결부의 일부에 형성된 핀홀 및 리텐션부로 인한 중량 변화를 다른 연결부를 통해 상쇄하도록 함으로써개재 차륜 장착 플랜지에 균일한 중량 분포를 형성하고 이를 통해 차륜의 회전시 차륜 장착 플랜지에 편심 현상이 발생하는 것을 방지할 수 있도록 구성된 휠베어링을 제공하는 것을 목적으로 한다.The present invention is to solve the above-described conventional problem, by forming a connection portion provided between the bolt mounting portions in the wheel mounting flange provided on the rotating element of the wheel bearing in a plurality of shapes (not all of the same shape) to part of the connection portion. By offsetting the weight change due to the formed pinhole and the retention part through the other connection part, it forms a uniform weight distribution on the intervening wheel mounting flange, and through this, it is configured to prevent the occurrence of eccentricity in the wheel mounting flange when the wheel rotates. It aims to provide wheel bearings.
전술한 목적을 달성하기 위한 본 발명의 대표적인 구성은 다음과 같다.A typical configuration of the present invention for achieving the above object is as follows.
본 발명의 일 실시예에 따르면, 차량의 차륜을 차체에 회전 가능하게 장착하여 지지하는 휠베어링이 제공된다. 본 발명의 일 실시예에 따른 휠베어링은 차량의 차륜이 장착되어 차륜과 함께 회전하는 회전요소와, 차량의 샤시 부품에 장착되어 차체에 고정되는 비회전요소와, 회전요소와 비회전요소 사이에 개재되어 회전요소를 비회전요소에 대해 회전 가능하게 지지하는 하나 이상의 전동체를 포함할 수 있다. 본 발명의 일 실시예에 따르면, 회전요소에는 차륜을 장착하는데 이용되는 차륜 장착 플랜지가 구비되고, 차륜 장착 플랜지에는 허브 볼트가 체결되는 볼트 장착부와 볼트 장착부 사이에서 연장하는 연결부가 원주방향을 따라 이격되어 복수로 구비될 수 있다. 본 발명의 일 실시예에 따르면, 연결부 중 하나 이상에는 브레이크 디스크 또는 차륜의 장착을 위한 위치결정핀이 삽입되는 핀홀이 구비되고, 연결부는 복수의 형상 및 면적으로 형성될 수 있다.According to an embodiment of the present invention, there is provided a wheel bearing for rotatably mounting and supporting a vehicle wheel on a vehicle body. The wheel bearing according to an embodiment of the present invention includes a rotating element that is mounted on a vehicle wheel and rotates with the wheel, a non-rotating element mounted on a chassis part of a vehicle and fixed to the vehicle body, and between the rotating element and the non-rotating element. It may include one or more rolling elements that are interposed and rotatably support the rotating element with respect to the non-rotating element. According to an embodiment of the present invention, a wheel mounting flange used to mount a wheel is provided on the rotating element, and a connection portion extending between the bolt mounting portion and the bolt mounting portion to which the hub bolt is fastened is spaced apart along the circumferential direction. It can be provided in plural. According to an embodiment of the present invention, at least one of the connection portions is provided with a pinhole into which a positioning pin for mounting a brake disk or a wheel is inserted, and the connection portion may be formed in a plurality of shapes and areas.
본 발명의 일 실시예에 따르면, 연결부는 볼트 장착부 보다 얇은 두께로 형성될 수 있다.According to an embodiment of the present invention, the connection portion may be formed to have a thinner thickness than the bolt mounting portion.
본 발명의 일 실시예에 따르면, 연결부는 핀홀이 형성되는 제1 연결부와 제1 연결부의 양측에 이웃하여 배치되는 제2 연결부와 제1 연결부와 이격되어 배치되는 제3 연결부를 포함할 수 있다.According to an embodiment of the present invention, the connection part may include a first connection part in which a pinhole is formed, a second connection part disposed adjacent to both sides of the first connection part, and a third connection part spaced apart from the first connection part.
본 발명의 일 실시예에 따르면, 제1 연결부, 제2 연결부, 제3 연결부의 외주면은 볼트 장착부의 외주면에 비해 반경방향 내측에 위치하도록 구성될 수 있다.According to an embodiment of the present invention, outer circumferential surfaces of the first connection part, the second connection part, and the third connection part may be configured to be located radially inward than the outer circumferential surface of the bolt mounting part.
본 발명의 일 실시예에 따르면, 제2 연결부 및 제3 연결부의 외주면에는 미리 정해진 곡률 반경을 갖는 곡면으로 반경방향 내측으로 함몰된 리세스가 구비될 수 있다.According to an embodiment of the present invention, a recess recessed radially inward with a curved surface having a predetermined radius of curvature may be provided on the outer circumferential surfaces of the second connection portion and the third connection portion.
본 발명의 일 실시예에 따르면, 제2 연결부의 외주면에 형성되는 리세스의 곡률 반경은 제3 연결부의 외주면에 형성되는 리세스의 곡률 반경과 상이하게 형성될 수 있다.According to an embodiment of the present invention, the radius of curvature of the recess formed on the outer circumferential surface of the second connection portion may be different from the radius of curvature of the recess formed on the outer circumferential surface of the third connection portion.
본 발명의 일 실시예에 따르면, 제3 연결부의 외주면에 형성되는 리세스의 곡률 반경은 제2 연결부의 외주면에 형성되는 리세스의 곡률 반경 보다 크게 형성될 수 있다.According to an embodiment of the present invention, the radius of curvature of the recess formed on the outer circumferential surface of the third connecting portion may be larger than the radius of curvature of the recess formed on the outer circumferential surface of the second connecting portion.
본 발명의 일 실시예에 따르면, 휠베어링의 회전요소는 차륜이 장착되는 휠허브와 휠허브에 압입되어 장착되는 하나 이상의 내륜을 포함하고, 휠베어링의 비회전요소는 차량의 샤시 부품에 결합되는 외륜으로 형성되며, 차륜 장착 플렌지는 휠허브에 구비되도록 구성될 수 있다.According to an embodiment of the present invention, the rotating element of the wheel bearing includes a wheel hub on which the wheel is mounted and at least one inner ring that is press-fitted to and mounted on the wheel hub, and the non-rotating element of the wheel bearing is coupled to the chassis part of the vehicle. It is formed as an outer ring, and the wheel mounting flange may be configured to be provided on the wheel hub.
이 외에도, 본 발명에 따른 휠베어링에는 본 발명의 기술적 사상을 해치지 않는 범위에서 다른 부가적인 구성이 더 포함될 수 있다.In addition to this, the wheel bearing according to the present invention may further include other additional configurations within a range that does not impair the technical spirit of the present invention.
본 발명의 일 실시예에 따른 휠베어링은 볼트 장착부 사이에 형성되는 연결부를 단일의 형상이 아니라 복수의 형상 및 면적으로 형성해 연결부의 일부에 핀홀 및 리텐션부를 형성해 중량 변화가 발생하더라도 타측의 연결부를 통해 이러한 중량 변화를 상쇄함으로써 차륜의 회전시 차륜 장착 플랜지에 편심 회전 및 이로 인한 진동/소음이 발생하는 것을 방지할 수 있게 된다.In the wheel bearing according to an embodiment of the present invention, the connecting portion formed between the bolt mounting portions is formed in a plurality of shapes and areas rather than a single shape to form a pinhole and a retention portion in a part of the connecting portion, so that the connecting portion of the other side is By offsetting this weight change, it is possible to prevent eccentric rotation and vibration/noise caused by the wheel mounting flange when the wheel is rotated.
더욱이, 본 발명의 일 실시예에 따른 휠베어링은 핀홀 및 리텐션부에 의해 발생된 연결부의 중량 변화를 다른 연결부를 통해 상쇄하도록 구성되어 동일 평면 내에서 중량 밸런스가 조정되어 차륜 장착 플랜지의 편심을 보다 용이하고 효과적으로 억제할 수 있게 된다.Moreover, the wheel bearing according to an embodiment of the present invention is configured to compensate for the weight change of the connection part caused by the pinhole and the retention part through the other connection part, and the weight balance is adjusted within the same plane to reduce the eccentricity of the wheel mounting flange. It becomes possible to suppress more easily and effectively.
도 1은 종래의 휠베어링의 구조를 예시적으로 도시한다.1 shows an exemplary structure of a conventional wheel bearing.
도 2는 도 1에 도시된 휠베어링의 차륜 장착 플랜지(허브 플랜지)를 예시적으로 도시한다.FIG. 2 exemplarily shows a wheel mounting flange (hub flange) of the wheel bearing shown in FIG. 1.
도 3은 본 발명의 일 실시예에 따른 휠베어링의 전체적인 구조를 예시적으로 도시한다.3 exemplarily shows the overall structure of a wheel bearing according to an embodiment of the present invention.
도 4는 본 발명의 일 실시예에 따른 휠베어링의 단면구조를 예시적으로 도시한다.4 illustrates an exemplary cross-sectional structure of a wheel bearing according to an embodiment of the present invention.
도 5는 본 발명의 일 실시예에 따른 휠베어링의 휠허브 구조를 예시적으로 도시한다.5 illustrates an exemplary structure of a wheel hub of a wheel bearing according to an embodiment of the present invention.
도 6은 본 발명의 일 실시예에 따른 휠베어링의 휠허브를 차체측에서 바라본 모습을 예시적으로 도시한다.6 is an exemplary view showing a wheel hub of a wheel bearing according to an embodiment of the present invention as viewed from the vehicle body side.
도 7은 본 발명의 다른 실시예에 따른 휠베어링의 휠허브 구조를 예시적으로 도시한다.7 illustrates an exemplary wheel hub structure of a wheel bearing according to another embodiment of the present invention.
<부호의 설명><Explanation of code>
100: 휠베어링100: wheel bearing
200: 회전요소200: rotating element
210: 휠허브210: wheel hub
220: 내륜220: inner ring
230: 차륜 장착 플랜지230: wheel mounting flange
240: 볼트 장착부240: bolt mount
250: 연결부250: connection
250a: 제1 연결부250a: first connection
250b: 제2 연결부250b: second connection
250c: 제3 연결부250c: third connection
260: 핀홀260: pinhole
270: 리텐션부270: retention unit
300: 비회전요소300: non-rotating element
310: 차체측 장착 플랜지310: body side mounting flange
400: 전동체400: rolling element
500: 허브 볼트500: hub bolt
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, with reference to the accompanying drawings, preferred embodiments of the present invention will be described in detail enough to be easily implemented by those of ordinary skill in the art to which the present invention pertains.
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, detailed descriptions of parts not related to the present invention will be omitted, and the same components will be described with the same reference numerals throughout the specification. In addition, since the shapes and sizes of each component shown in the drawings are arbitrarily shown for convenience of description, the present invention is not necessarily limited to the shown shapes and sizes. That is, 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 is also the spirit of the present invention. And it is to be understood that it may be changed without departing from the scope. Therefore, the detailed description to be described below is not made in a limiting sense, and the scope of the present invention should be taken as encompassing the scope claimed by the claims of the claims and all scopes equivalent thereto.
본 발명의 일 실시예에 따른 휠베어링Wheel bearing according to an embodiment of the present invention
도 3 내지 도 7을 참조하면, 본 발명의 일 실시예에 따른 휠베어링(100)의 구조가 예시적으로 도시되어 있다. 도면에 도시된 바와 같이, 본 발명의 일 실시예에 따른 휠베어링(100)은 통상의 휠베어링과 전체적으로 유사하게 형성될 수 있다. 예컨대, 본 발명의 일 실시예에 따른 휠베어링(100)은 전술한 통상의 휠베어링과 같이 차륜이 장착되는 회전요소(200)가 차체에 연결된 비회전요소(300)에 복수의 전동체(400)를 통해 회전 가능하게 지지되도록 구성될 수 있다.3 to 7, the structure of the wheel bearing 100 according to an embodiment of the present invention is illustrated by way of example. As shown in the drawings, the wheel bearing 100 according to an embodiment of the present invention may be formed in an overall similar manner to a conventional wheel bearing. For example, the wheel bearing 100 according to an embodiment of the present invention includes a plurality of rolling elements 400 in the non-rotating element 300 connected to the vehicle body in which the rotating element 200 on which the wheel is mounted, like the conventional wheel bearing described above. ) May be configured to be supported rotatably through.
본 발명의 일 실시예에 따르면, 회전요소(200)는 차륜이 장착되는 휠허브(210)와 휠허브(210)에 압입되어 장착되는 내륜(220)을 포함해 구성될 수 있으며, 비회전요소(300)는 차량의 샤시 부품에 결합되어 차체에 고정되는 외륜 등으로 구성될 수 있다. 다만, 본 발명의 일 실시예에 따른 휠베어링은 이러한 구조로 한정되어야 하는 것은 아니고 통상의 휠베어링에 적용될 수 있는 다른 다양한 구조로 변형되어 형성되어도 무방하다.According to an embodiment of the present invention, the rotating element 200 may include a wheel hub 210 on which a wheel is mounted and an inner ring 220 that is press-fitted to and mounted on the wheel hub 210, and a non-rotating element 300 may be composed of an outer ring or the like coupled to a chassis part of a vehicle and fixed to the vehicle body. However, the wheel bearing according to the exemplary embodiment of the present invention is not limited to this structure, and may be formed by being transformed into various other structures applicable to ordinary wheel bearings.
본 발명의 일 실시예에 따르면, 회전요소(200)를 구성하는 휠허브(210)는 축방향을 따라 연장하는 대략 원통형의 형상으로 형성될 수 있으며, 휠허브(210)의 차륜측 단부 부근에는 차륜 장착 플랜지(230)가 구비될 수 있다. 차륜 장착 플랜지(230)는 휠허브(210)의 외주면으로부터 반경방향 외측으로 연장되어 형성될 수 있으며, 원주방향을 따라 하나 이상의 볼트 장착공을 구비해 허브 볼트(500)를 이용해 차륜 및/또는 브레이크 디스크를 휠허브(210)에 장착하는데 이용될 수 있다. 한편, 휠허브(210)의 차체측 단부에는 단차부가 형성되어 내륜(220)을 장착하도록 구성될 수 있으며, 휠허브(210)의 외주면 일부에는 궤도면(내측 궤도면)이 형성되어 전동체(400)를 반경방향 내측에서 지지하도록 구성될 수 있다.According to an embodiment of the present invention, the wheel hub 210 constituting the rotating element 200 may be formed in a substantially cylindrical shape extending along the axial direction, and near the end of the wheel side of the wheel hub 210 A wheel mounting flange 230 may be provided. The wheel mounting flange 230 may be formed to extend radially outward from the outer circumferential surface of the wheel hub 210, and has one or more bolt mounting holes along the circumferential direction, and the wheel and/or brake using the hub bolt 500 It may be used to mount the disk to the wheel hub 210. Meanwhile, a stepped portion is formed at an end of the vehicle body side of the wheel hub 210 to be configured to mount the inner ring 220, and a track surface (inner track surface) is formed on a part of the outer circumferential surface of the wheel hub 210 to form a rolling element ( 400) may be configured to support from the inside in the radial direction.
본 발명의 일 실시예에 따르면, 내륜(220)은 휠허브(210)의 일측에 하나 이상 압입되어 장착되도록 구성될 수 있다. 예컨대, 내륜(220)은 휠허브(210)의 차체측 단부에 형성된 단차부에 압입된 상태에서 휠허브(210)의 단부를 도 4에 도시된 바와 같이 소성변형시키거나 휠허브(210)의 차체측 단부에 너트 등을 체결해 휠허브(210)에 안착되어 유지되도록 구성될 수 있다. 또한, 내륜(220)의 외주면에는 전동체(400)가 접촉하는 궤도면(내측 궤도면)이 구비되어 전동체를 반경방향 내측에서 지지하도록 구성될 수 있다.According to an embodiment of the present invention, the inner ring 220 may be configured to be mounted by pressing one or more one side of the wheel hub 210. For example, the inner ring 220 is plastically deformed as shown in FIG. 4 or the end of the wheel hub 210 in a state that is pressed into a step portion formed at the end of the vehicle body side of the wheel hub 210. It may be configured to be seated and maintained on the wheel hub 210 by fastening a nut or the like at the end of the vehicle body side. In addition, the outer circumferential surface of the inner ring 220 may be provided with a raceway surface (inner raceway surface) to which the rolling element 400 contacts, and may be configured to support the rolling element from the inside in the radial direction.
다만, 도면에 도시된 실시예의 경우에는 휠허브의 외주면 일부에 전동체를 지지하기 위한 일측 궤도면이 직접 형성되도록 구성되어 있으나, 본 발명의 일 실시예에 따른 휠베어링은 이와 달리 휠허브에 2개의 내륜을 장착해 2개의 내륜을 통해 전동체의 궤도면(내측 궤도면)이 형성되도록 구성되어도 무방하며, 휠허브의 반경방향 내측에 내륜이 장착되도록 구성되는 등 다른 임의의 휠베어링 구조로 변형되어 실시될 수도 있다.However, in the case of the embodiment shown in the drawings, one raceway surface for supporting the rolling element is directly formed on a part of the outer circumferential surface of the wheel hub. However, the wheel bearing according to an embodiment of the present invention is different from that in the wheel hub. It may be configured to form the raceway surface (inner raceway surface) of the rolling element through two inner rings by installing two inner rings, and it is modified to any other arbitrary wheel bearing structure, such as being configured to install the inner ring inside the radial direction of the wheel hub. May be implemented.
본 발명의 일 실시예에 따르면, 비회전요소(300)를 구성하는 외륜은 외주면에 휠베어링(100)을 차체에 장착하기 위한 차체측 장착 플랜지(310)를 구비하고, 내주면에 전동체(400)가 접촉하는 궤도면(외측 궤도면)을 구비하도록 구성될 수 있다. 외륜의 내주면에 형성된 궤도면(외측 궤도면)은 휠허브(210) 및/또는 내륜(220)에 형성된 궤도면(내측 궤도면)과 협력해 궤도면 사이에 구름요소인 전동체(400)를 수용하여 지지하도록 구성될 수 있다.According to an embodiment of the present invention, the outer ring constituting the non-rotating element 300 is provided with a vehicle body side mounting flange 310 for mounting the wheel bearing 100 to the vehicle body on the outer circumferential surface, and the rolling element 400 on the inner circumferential surface. ) May be configured to have a raceway surface (outer raceway surface) in contact. The raceway surface (outer raceway surface) formed on the inner circumferential surface of the outer ring cooperates with the raceway surface (inner raceway surface) formed on the wheel hub 210 and/or the inner ring 220 to form a rolling element 400 between the raceways. It may be configured to receive and support.
본 발명의 일 실시예에 따르면, 전동체(400)는 회전요소(200)와 비회전요소(300) 사이에 배치되어, 회전요소(200)에 장착된 차륜을 비회전요소(300)가 결합되는 차체에 대해 회전 가능하게 지지하는 기능을 수행할 수 있다.According to an embodiment of the present invention, the rolling element 400 is disposed between the rotating element 200 and the non-rotating element 300, and the non-rotating element 300 is coupled to the wheel mounted on the rotating element 200 It can perform a function of rotatably supporting the vehicle body.
본 발명의 일 실시예에 따르면, 회전요소(200)에 구비되는 차륜 장착 플랜지(230)는 허브 볼트가 삽입되는 볼트 장착부(240)와 볼트 장착부(240) 사이에서 연장하는 연결부(250)를 포함하도록 구성될 수 있다.According to an embodiment of the present invention, the wheel mounting flange 230 provided on the rotating element 200 includes a connection part 250 extending between the bolt mounting part 240 and the bolt mounting part 240 into which the hub bolt is inserted. Can be configured to
본 발명의 일 실시예에 따르면, 볼트 장착부(240)에는 볼트 장착공(245)이 구비되어 볼트 장착공(245)에 허브 볼트(500)를 삽입해 차륜(및/또는 브레이크 디스크)을 차륜 장착 플랜지(230)에 체결하도록 구성될 수 있다.According to an embodiment of the present invention, a bolt mounting hole 245 is provided in the bolt mounting part 240 to insert a hub bolt 500 into the bolt mounting hole 245 to mount a wheel (and/or a brake disk) to a wheel It may be configured to be fastened to the flange 230.
본 발명의 일 실시예에 따르면, 차륜 장착 플랜지(230)는 원주방향을 따라 복수의 볼트 장착부(240)가 등간격으로 이격되어 형성될 수 있으며, 볼트 장착부(240)는 허브 볼트(500)에 충분한 결합 길이 및 체결력을 제공할 수 있도록 상대적으로 두꺼운 두께로 형성될 수 있다. 반면에, 볼트 장착부(240) 사이에 위치하며 상대적으로 작은 하중이 인가되는 연결부(250)는 경량화를 위해 볼트 장착부(240)에 비해 상대적으로 얇은 두께로 형성되도록 구성될 수 있다.According to an embodiment of the present invention, the wheel mounting flange 230 may be formed with a plurality of bolt mounting portions 240 spaced apart at equal intervals along the circumferential direction, and the bolt mounting portion 240 is attached to the hub bolt 500. It may be formed with a relatively thick thickness to provide sufficient coupling length and fastening force. On the other hand, the connection part 250 located between the bolt mounting parts 240 and to which a relatively small load is applied may be configured to have a relatively thin thickness compared to the bolt mounting part 240 for weight reduction.
한편, 본 발명의 일 실시예에 따르면, 연결부(250)는 외주면이 볼트 장착부(240)의 외주면에 비해 반경방향 내측으로 함몰된 구조로 형성될 수 있다. 이러한 구조에 의하면, 휠허브의 중량이 보다 감소될 수 있어 휠베어링의 경량화 및 차량의 연비 향상이 더욱 도모될 수 있다.Meanwhile, according to an embodiment of the present invention, the connection part 250 may be formed in a structure in which an outer circumferential surface is recessed radially inward compared to the outer circumferential surface of the bolt mounting part 240. According to this structure, the weight of the wheel hub can be further reduced, so that the weight of the wheel bearing and improvement of the fuel efficiency of the vehicle can be further promoted.
본 발명의 일 실시예에 따르면, 연결부(250) 중 일부에는 차륜 장착 플랜지(230)에 차륜 및/또는 브레이크 디스크를 장착할 때 위치결정을 보조하는 위치결정핀이 삽입되는 핀홀(260)이 구비될 수 있다.According to an embodiment of the present invention, some of the connection parts 250 are provided with a pinhole 260 into which a positioning pin to assist positioning when a wheel and/or a brake disk is mounted on the wheel mounting flange 230 is inserted. Can be.
구체적으로, 차륜 장착 플랜지(230)의 볼트 장착부(240) 사이에 형성되는 연결부(250) 중 일부에는 관통된 형상의 핀홀(260)이 형성되며, 핀홀(260) 주위에는 소정의 두께를 확보하기 위해 반경방향으로 연장하는 리텐션부(270)가 형성되도록 구성될 수 있다.Specifically, a through-shaped pinhole 260 is formed in some of the connection portions 250 formed between the bolt mounting portions 240 of the wheel mounting flange 230, and a predetermined thickness is secured around the pinhole 260. For this purpose, a retention portion 270 extending in the radial direction may be formed.
다만, 이와 같이 일부 연결부(250)에 핀홀(260) 및/또는 리텐션부(270)를 형성하게 되면 이로 인해 연결부(250)의 면적 및 중량이 변화되어 차륜 장착 플랜지(230)에 중량 불균형이 발생할 우려가 있다. 따라서, 도 2에 도시된 통상의 휠베어링과 같이 연결부를 모두 동일한 형상으로 형성하게 되면 핀홀이 형성되는 연결부의 형상 및 중량 변화로 인해 차륜 회전시 차륜 장착 플랜지에 편심이 발생하게 되고 이로 인해 차량에 소음 및 진동이 발생할 우려가 있다.However, when the pinhole 260 and/or the retention part 270 are formed in some of the connection parts 250 as described above, the area and weight of the connection part 250 are changed, resulting in a weight imbalance in the wheel mounting flange 230. There is a risk of occurrence. Therefore, if all the connecting portions are formed in the same shape as in the conventional wheel bearing shown in FIG. 2, eccentricity occurs in the wheel mounting flange when the wheel rotates due to the change in shape and weight of the connecting portion in which the pinhole is formed. There is a risk of noise and vibration.
이러한 문제를 해소하기 위해, 본 발명의 일 실시예에 따른 휠베어링(100)은 차량 장착 플랜지(230)에 형성되는 연결 플랜지(250)를 서로 동일한 형상으로 형성하지 않고 연결 플랜지(250)가 복수의 형상 및 면적을 갖도록 구성되어 있다.In order to solve this problem, the wheel bearing 100 according to an embodiment of the present invention does not form the connection flange 250 formed on the vehicle mounting flange 230 in the same shape, and has a plurality of connection flanges 250. It is configured to have the shape and area of.
예컨대, 도 3 내지 도 6에 도시된 실시형태의 경우, 휠베어링(100)은 원주방향을 따라 5개의 허브 볼트(500)가 장착되도록 5개의 볼트 장착부(240)가 등간격으로 서로 이격되어 배치되어 있으며, 볼트 장착부(240) 사이에는 5개의 연결부(250)가 형성되도록 구성되어 있다.For example, in the case of the embodiment shown in FIGS. 3 to 6, the wheel bearing 100 is arranged so that the five hub bolts 500 are mounted along the circumferential direction, and the five bolt mounting portions 240 are spaced apart from each other at equal intervals. It is configured to form five connection parts 250 between the bolt mounting part 240.
구체적으로, 도 3 내지 도 6에 도시된 실시예의 휠베어링(100)은 핀홀(260)이 형성되는 제1 연결부(250a), 제1 연결부(250a)의 양측에 이웃하게 배치되는 제2 연결부(250b), 제1 연결부(250a)와 이격되어 배치되는[즉, 중심축을 중심으로 제1 연결부(250a)의 반대측 위치하는] 제3 연결부(250c)를 포함하여 구성될 수 있다. [본 명세서에서 이웃하여 배치되는 연결부는 하나의 볼트 장착부를 사이에 두고 양측에 배치되는 연결부를 의미함]Specifically, the wheel bearing 100 of the embodiment illustrated in FIGS. 3 to 6 includes a first connection part 250a in which a pinhole 260 is formed, and a second connection part disposed adjacent to both sides of the first connection part 250a ( 250b), it may be configured to include a third connection portion 250c disposed to be spaced apart from the first connection portion 250a (that is, located on the opposite side of the first connection portion 250a around the central axis). [In this specification, the connection portion disposed adjacently refers to a connection portion disposed on both sides with one bolt mounting portion in between]
즉, 도 3 내지 도 6에 도시된 휠베어링(100)은 하나의 제1 연결부(250a)와, 제1 연결부(250a)에 이웃하게 배치되는 2개의 제2 연결부(250b)와, 제1 연결부(250a)와 이격되어 배치되는 2개의 제3 연결부(250c)를 포함하도록 구성되어 있다.That is, the wheel bearing 100 shown in FIGS. 3 to 6 includes one first connection part 250a, two second connection parts 250b disposed adjacent to the first connection part 250a, and a first connection part. It is configured to include two third connecting portions 250c that are spaced apart from the 250a.
본 발명의 일 실시예에 따르면, 제1 연결부(250a)에는 핀홀(260) 및/또는 이의 주위로 연장되어 형성되는 리텐션부(270)가 구비되어 연결부의 면적 및 중량이 달라질 수 있기 때문에, 이러한 제1 연결부(250a)의 면적 및 중량 변화를 보상하기 위해 본 발명의 일 실시예에 따른 휠베어링(100)은 제1 연결부(250a)에 이웃한 제2 연결부(250b)와 제1 연결부(250a)와 이격되어 반대편에 위치하는 제3 연결부(250c)를 서로 다른 형상 및 면적으로 형성하도록 구성되어 있다.According to an embodiment of the present invention, since the first connection part 250a is provided with a pinhole 260 and/or a retention part 270 extending around the pinhole 260 and the area and weight of the connection part may vary, In order to compensate for the change in the area and weight of the first connection part 250a, the wheel bearing 100 according to an embodiment of the present invention includes a second connection part 250b and a first connection part 250a adjacent to the first connection part 250a. It is configured to form the third connection portion 250c, which is spaced apart from 250a) and located on the opposite side, in different shapes and areas.
구체적으로, 본 발명의 일 실시예에 따른 휠베어링(100)은 경량화를 위해 차륜 장착 플랜지(230)의 제2 연결부(250b) 및 제3 연결부(250c)의 외주면에 소정의 곡률 반경으로 내측으로 함몰된 리세스(252)가 형성되도록 구성되어 있으며, 제2 연결부(250b)의 외주면에 형성되는 리세스의 곡률 반경(r1)과 제3 연결부(250c)의 외주면에 형성되는 리세스의 곡률 반경(r2)을 서로 다르게 형성해 곡률 반경 값의 조절을 통해 차륜 장착 플랜지(230)의 하중 중심을 조절해 차륜 장착 플랜지(230)의 편심을 억제하도록 구성되어 있다.Specifically, the wheel bearing 100 according to an embodiment of the present invention has a predetermined radius of curvature on the outer peripheral surfaces of the second connection portion 250b and the third connection portion 250c of the wheel mounting flange 230 for weight reduction. The recessed recess 252 is configured to be formed, and the radius of curvature r1 of the recess formed on the outer peripheral surface of the second connection part 250b and the radius of curvature of the recess formed on the outer peripheral surface of the third connection part 250c (r2) is formed differently to adjust the load center of the wheel mounting flange 230 by adjusting the radius of curvature to suppress the eccentricity of the wheel mounting flange 230.
예컨대, 본 발명의 일 실시예에 따른 휠베어링(100)은 제2 연결부(250b)에 형성되는 리세스의 곡률 반경(r1)을 제3 연결부(250c)에 형성되는 리세스의 곡률 반경(r2)보다 작게 형성해 제1 연결부(250a)에 핀홀(260) 및 리텐션부(270)를 형성함으로써 발생된 차륜 장착 플랜지(230)의 중량 불균형을 해소하도록 구성될 수 있다.For example, in the wheel bearing 100 according to an embodiment of the present invention, the radius of curvature r1 of the recess formed in the second connection part 250b is the radius of curvature r2 of the recess formed in the third connection part 250c. ) Smaller than the pinhole 260 and the retention portion 270 in the first connection portion 250a, thereby solving the weight imbalance of the wheel mounting flange 230.
이러한 구성에 의하면, 차륜 장착 플랜지(230)의 연결부 내에서 발생된 중량 불균형을 동일한 연결부 평면 내에서 조절해 하중 중심을 조절함으로써 차륜 장착 플랜지에 발생되는 편심을 해소할 수 있기 때문에, 중량 불균일에 의한 편심 및 이로 인한 진동/소음 문제가 효과적이고 용이하게 억제될 수 있게 된다.According to this configuration, since the eccentricity generated in the wheel mounting flange can be eliminated by adjusting the load center by adjusting the weight imbalance generated in the connection part of the wheel mounting flange 230 within the same plane of the connection part, it is possible to eliminate the eccentricity generated in the wheel mounting flange. Eccentricity and the resulting vibration/noise problem can be effectively and easily suppressed.
한편, 본 발명의 일 실시예에 따른 휠베어링은 차륜 장착 플랜지에 구비되는 볼트 장착부 및 연장부의 형상 및 개수를 다양한 구조로 형성해도 무방하다.Meanwhile, the wheel bearing according to an embodiment of the present invention may have various shapes and numbers of bolt mounting portions and extension portions provided on the wheel mounting flange.
예컨대, 본 발명의 일 실시예에 따른 휠베어링(100)은 도 7에 도시된 바와 같이 짝수개(4개)의 허브 볼트를 이용해 휠허브(210)에 차륜을 장착하도록 구성될 수도 있다.For example, the wheel bearing 100 according to an embodiment of the present invention may be configured to mount a wheel to the wheel hub 210 using an even number (4) of hub bolts as shown in FIG. 7.
도 7에 도시된 바와 같이, 짝수개의 허브 볼트를 이용하도록 휠베어링을 형성할 경우, 차륜 장착 플랜지(230)에는 핀홀(260)이 형성되는 제1 연결부(250a)와, 제1 연결부(250b)에 이웃하여 배치되는 2개의 제2 연결부(250b)와, 제1 연결부(250a)와 이격되어 배치되는 하나의 제3 연결부(250c)를 갖도록 구성될 수 있으며, 도 7에 도시된 실시예의 경우에도 제1 연결부(250a)에 이격되어 배치되는 제3 연결부(250c)와 제1 연결부(250a)에 이웃하여 배치되는 제2 연결부(250b)의 형상을 다르게 형성함으로써[즉, 연결부의 외주면에 형성되는 리세스의 곡률 반경을 서로 다르게 형성함으로써], 핀홀(260) 및 리텐션부(270)의 형성에 의해 발생된 제1 연결부(250a)의 중량 변화를 상쇄하고 이를 통해 차륜의 회전시 발생할 수 있는 차륜 장착 플랜지의 편심 문제를 용이하게 해소할 수 있게 된다.As shown in FIG. 7, when a wheel bearing is formed to use an even number of hub bolts, a first connection part 250a and a first connection part 250b in which a pinhole 260 is formed in the wheel mounting flange 230 It can be configured to have two second connection parts 250b disposed adjacent to and one third connection part 250c disposed to be spaced apart from the first connection part 250a, and even in the case of the embodiment shown in FIG. 7 By forming different shapes of the third connecting portion 250c disposed to be spaced apart from the first connecting portion 250a and the second connecting portion 250b disposed adjacent to the first connecting portion 250a (that is, formed on the outer peripheral surface of the connecting portion) By forming different radii of curvature of the recesses], the weight change of the first connection part 250a caused by the formation of the pinhole 260 and the retention part 270 is canceled, and through this, a change that may occur when the wheel rotates It is possible to easily solve the eccentricity problem of the wheel mounting flange.
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 by specific matters such as specific elements and limited embodiments, these embodiments are provided only to aid in a more general understanding of the present invention, and the present invention is not limited thereto, and the present invention is Those of ordinary skill in the relevant technical field can make various modifications and variations from these descriptions.
예컨대, 앞서 설명한 실시예에서는 휠허브에 하나의 내륜이 압입되어 장착되는 소위 3세대 방식의 휠베어링 구조를 이용해 본 발명에 따른 휠베어링을 설명하였으나, 본 발명에 따른 휠베어링은 휠허브에 2개의 내륜이 장착되는 소위 2.5세대 방식의 휠베어링이나 휠허브가 외측부재로서 기능하는 소위 2세대 방식의 휠베어링 등 다른 구조의 휠베어링으로 구성될 수도 있다.For example, in the above-described embodiment, the wheel bearing according to the present invention was described using a so-called third-generation wheel bearing structure in which one inner ring is press-fitted to the wheel hub, but the wheel bearing according to the present invention has two It may be composed of a wheel bearing of another structure, such as a so-called 2.5-generation wheel bearing on which an inner ring is mounted, or a so-called second-generation wheel bearing in which the wheel hub functions as an outer member.
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 is limited to the above-described embodiments and should not be defined, and all things that are equally or equivalently modified in the claims as well as the claims to be described later belong to the scope of the spirit of the present invention. something to do.

Claims (8)

  1. 차량의 차륜을 차체에 회전 가능하게 장착하여 지지하는 휠베어링(100)이며,It is a wheel bearing 100 that supports by rotatably mounting and supporting the wheel of a vehicle,
    차량의 차륜이 장착되어 차륜과 함께 회전하는 회전요소(200)와,A rotating element 200 that is equipped with a vehicle wheel and rotates with the wheel,
    차량의 샤시 부품에 장착되어 차체에 고정되는 비회전요소(300)와,A non-rotating element 300 mounted on the chassis part of the vehicle and fixed to the vehicle body,
    상기 회전요소(200)와 상기 비회전요소(300) 사이에 개재되어 상기 회전요소(200)를 상기 비회전요소(300)에 대해 회전 가능하게 지지하는 하나 이상의 전동체(400)를 포함하고,It includes one or more rolling elements 400 interposed between the rotating element 200 and the non-rotating element 300 to support the rotating element 200 rotatably with respect to the non-rotating element 300,
    상기 회전요소(200)에는 차륜을 장착하는데 이용되는 차륜 장착 플랜지(230)가 구비되고,The rotating element 200 is provided with a wheel mounting flange 230 used to mount the wheel,
    상기 차륜 장착 플랜지(230)에는 허브 볼트(500)가 체결되는 볼트 장착부(240)와 상기 볼트 장착부(240) 사이에서 연장하는 연결부(250)가 원주방향을 따라 이격되어 복수로 구비되고,The wheel mounting flange 230 includes a plurality of bolt mounting portions 240 to which the hub bolts 500 are fastened and a plurality of connection portions 250 extending between the bolt mounting portions 240 and spaced apart along the circumferential direction,
    상기 연결부(250) 중 하나 이상에는 브레이크 디스크 또는 차륜의 장착을 위한 위치결정핀이 삽입되는 핀홀(260)이 구비되고,At least one of the connection parts 250 is provided with a pinhole 260 into which a positioning pin for mounting a brake disk or a wheel is inserted,
    상기 연결부(250)는 복수의 형상 및 면적으로 형성되는,The connection part 250 is formed in a plurality of shapes and areas,
    휠베어링.Wheel bearing.
  2. 제1항에 있어서,The method of claim 1,
    상기 연결부(250)는 상기 볼트 장착부(240) 보다 얇은 두께로 형성되는,The connection part 250 is formed to have a thickness thinner than that of the bolt mounting part 240,
    휠베어링.Wheel bearing.
  3. 제1항 또는 제2항에 있어서,The method according to claim 1 or 2,
    상기 연결부(250)는 상기 핀홀(260)이 형성되는 제1 연결부(250a)와 상기 제1 연결부(250a)의 양측에 이웃하여 배치되는 제2 연결부(250b)와 상기 제1 연결부(250a)와 이격되어 배치되는 제3 연결부(250c)를 포함하는,The connection part 250 includes a first connection part 250a in which the pinhole 260 is formed, a second connection part 250b disposed adjacent to both sides of the first connection part 250a, and the first connection part 250a. Including a third connection portion (250c) spaced apart,
    휠베어링.Wheel bearing.
  4. 제3항에 있어서,The method of claim 3,
    상기 제1 연결부(250a), 상기 제2 연결부(250b), 상기 제3 연결부(250c)의 외주면은 상기 볼트 장착부(240)의 외주면에 비해 반경방향 내측에 위치하는,The outer circumferential surfaces of the first connection part 250a, the second connection part 250b, and the third connection part 250c are located radially inside the outer circumferential surface of the bolt mounting part 240,
    휠베어링.Wheel bearing.
  5. 제4항에 있어서,The method of claim 4,
    상기 제2 연결부(250b) 및 상기 제3 연결부(250c)의 외주면에는 미리 정해진 곡률 반경을 갖는 곡면으로 반경방향 내측으로 함몰된 리세스가 구비되는,The outer circumferential surfaces of the second connection part 250b and the third connection part 250c are provided with recesses recessed radially inward with a curved surface having a predetermined radius of curvature,
    휠베어링.Wheel bearing.
  6. 제5항에 있어서,The method of claim 5,
    상기 제2 연결부(250b)의 외주면에 형성되는 리세스의 곡률 반경(r1)은 상기 제3 연결부(250c)의 외주면에 형성되는 리세스의 곡률 반경(r2)과 상이하게 형성되는,The radius of curvature r1 of the recess formed on the outer circumferential surface of the second connection part 250b is formed different from the radius of curvature r2 of the recess formed on the outer circumferential surface of the third connection part 250c,
    휠베어링.Wheel bearing.
  7. 제6항에 있어서,The method of claim 6,
    상기 제3 연결부(250c)의 외주면에 형성되는 리세스의 곡률 반경(r2)은 상기 제2 연결부(250b)의 외주면에 형성되는 리세스의 곡률 반경(r1) 보다 크게 형성되는,The curvature radius r2 of the recess formed on the outer circumferential surface of the third connection part 250c is larger than the curvature radius r1 of the recess formed on the outer circumferential surface of the second connection part 250b,
    휠베어링.Wheel bearing.
  8. 제1항 내지 제7항 중 어느 한 항에 있어서,The method according to any one of claims 1 to 7,
    상기 휠베어링의 회전요소(200)는 차륜이 장착되는 휠허브(210)와 상기 휠허브에 압입되어 장착되는 내륜(220)을 포함하고,The rotating element 200 of the wheel bearing includes a wheel hub 210 on which a wheel is mounted and an inner ring 220 that is press-fitted to and mounted on the wheel hub,
    상기 휠베어링의 비회전요소(300)는 차량의 샤시 부품에 결합되는 외륜으로 형성되고,The non-rotating element 300 of the wheel bearing is formed as an outer ring coupled to a chassis part of a vehicle,
    상기 차륜 장착 플랜지(230)는 상기 휠허브(210)에 구비되는,The wheel mounting flange 230 is provided on the wheel hub 210,
    휠베어링.Wheel bearing.
PCT/KR2020/004599 2019-04-03 2020-04-03 Wheel bearing having improved wheel mounting flange structure WO2020204671A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020190039296A KR20200117334A (en) 2019-04-03 2019-04-03 Wheel bearing provided with improved wheel mounting flange structure
KR10-2019-0039296 2019-04-03

Publications (1)

Publication Number Publication Date
WO2020204671A1 true WO2020204671A1 (en) 2020-10-08

Family

ID=72667227

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2020/004599 WO2020204671A1 (en) 2019-04-03 2020-04-03 Wheel bearing having improved wheel mounting flange structure

Country Status (2)

Country Link
KR (1) KR20200117334A (en)
WO (1) WO2020204671A1 (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100040319A1 (en) * 2007-04-16 2010-02-18 Ntn Corporation Wheel Bearing Apparatus
JP2012153360A (en) * 2005-09-06 2012-08-16 Nsk Ltd Method for manufacturing wheel-supporting rolling bearing unit
JP2015071183A (en) * 2013-10-04 2015-04-16 Ntn株式会社 Manufacturing method of outer member of wheel bearing device
JP2018112225A (en) * 2017-01-10 2018-07-19 日本精工株式会社 Rolling bearing unit
KR102008300B1 (en) * 2018-04-02 2019-08-07 주식회사 일진글로벌 Wheel hub and wheel bearing assembly comprising same

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5134340B1 (en) 1970-05-07 1976-09-25

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012153360A (en) * 2005-09-06 2012-08-16 Nsk Ltd Method for manufacturing wheel-supporting rolling bearing unit
US20100040319A1 (en) * 2007-04-16 2010-02-18 Ntn Corporation Wheel Bearing Apparatus
JP2015071183A (en) * 2013-10-04 2015-04-16 Ntn株式会社 Manufacturing method of outer member of wheel bearing device
JP2018112225A (en) * 2017-01-10 2018-07-19 日本精工株式会社 Rolling bearing unit
KR102008300B1 (en) * 2018-04-02 2019-08-07 주식회사 일진글로벌 Wheel hub and wheel bearing assembly comprising same

Also Published As

Publication number Publication date
KR20200117334A (en) 2020-10-14

Similar Documents

Publication Publication Date Title
EP2260215B1 (en) Outboard hub barrel mounted rotor
WO2018021655A1 (en) Wheel bearing sealing device and manufacturing method therefor
WO2020246833A1 (en) Wheel bearing assembly
WO2020204671A1 (en) Wheel bearing having improved wheel mounting flange structure
WO2019194553A1 (en) Wheel hub and wheel bearing assembly including same
WO2023128224A1 (en) Air foil thrust bearing
WO2018199422A1 (en) Wheel bearing assembly and wheel bearing
WO2019209093A1 (en) Wheel bearing assembly
WO2020149680A1 (en) Vehicle wheel bearing
WO2018004098A1 (en) Ball-and-socket type tilting pad journal bearing
WO2020166778A1 (en) Vehicle wheel bearing having enhanced sealing function
WO2012015175A2 (en) Multi-bearing unit with integrated housing
WO2019235661A1 (en) Wheel bearing and wheel bearing assembly
WO2012033286A2 (en) Elastic ring bearing
WO2024043577A1 (en) Vehicle wheel bearing provided with sealing member having non-coaxial sealing lip
WO2018066794A1 (en) Knuckle and wheel bearing assembly
WO2020139049A1 (en) Tandem ball bearing
WO2021215858A1 (en) Wheel bearing assembly
WO2019235662A1 (en) Wheel bearing and wheel bearing assembly
WO2023244056A1 (en) Wheel bearing assembly
WO2022146087A1 (en) Pinion bearing
JP4038982B2 (en) Hub unit for vehicles
WO2023244057A1 (en) Wheel bearing assembly
WO2020213907A1 (en) Wheel bearing assembly
WO2020159231A1 (en) Vehicle wheel bearing having improved sealing function

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 20782955

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 20782955

Country of ref document: EP

Kind code of ref document: A1