WO2019213817A1 - 轮毂轴承组件 - Google Patents

轮毂轴承组件 Download PDF

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Publication number
WO2019213817A1
WO2019213817A1 PCT/CN2018/085895 CN2018085895W WO2019213817A1 WO 2019213817 A1 WO2019213817 A1 WO 2019213817A1 CN 2018085895 W CN2018085895 W CN 2018085895W WO 2019213817 A1 WO2019213817 A1 WO 2019213817A1
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WO
WIPO (PCT)
Prior art keywords
hub bearing
sensor cover
bearing assembly
outer ring
wall
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Application number
PCT/CN2018/085895
Other languages
English (en)
French (fr)
Inventor
钟艳宾
努伊瑟·克里斯蒂安
张雪
Original Assignee
舍弗勒技术股份两合公司
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 舍弗勒技术股份两合公司 filed Critical 舍弗勒技术股份两合公司
Priority to PCT/CN2018/085895 priority Critical patent/WO2019213817A1/zh
Priority to CN201880082435.1A priority patent/CN111512055A/zh
Publication of WO2019213817A1 publication Critical patent/WO2019213817A1/zh

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
    • F16C19/14—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load
    • F16C19/18—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/72—Sealings
    • F16C33/76—Sealings of ball or roller bearings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
    • F16C35/04—Rigid support of bearing units; Housings, e.g. caps, covers in the case of ball or roller bearings

Definitions

  • the present invention relates to the field of bearings, and more particularly to a hub bearing assembly.
  • FIG. 1 shows a hub bearing assembly that includes a hub bearing 1 and a sensor cover 2.
  • the sensor cover 2 is used to mount a sensor in its sensor mounting portion 3 to detect encoder or pulse ring signal data.
  • the sensor cover 2 is one of the important components of the hub bearing assembly.
  • the sensor cover 2 also functions as a seal.
  • the hub bearing 1 includes an outer ring, an inner ring, and rolling elements between the outer ring and the inner ring.
  • the sensor cover 2 includes a cover body and a skeleton ring which are formed by, for example, overmolding, and the skeleton ring is fixed to one axial end of the cover body and has an interference fit with the inner circumferential surface of the outer ring, thereby fixing the sensor cover 2 to the hub bearing 1.
  • the interference between the outer ring and the sensor cover 2 is not sufficient for some reasons.
  • the sensor cover 2 may be detached, which may cause the hub bearing to malfunction.
  • a hub bearing assembly includes a hub bearing and a sensor cover mounted to the hub bearing, the sensor cover including a cylindrical portion that is fitted to an inner circumferential surface of an outer ring of the hub bearing,
  • an inner circumferential surface of the outer ring is formed with a groove extending in a circumferential direction of the hub bearing
  • the sensor cover includes a hook portion protruding from a radially outer side of the cylindrical portion toward the hub bearing, The hook portion projects into the slot to form a snap connection between the hook portion and the slot.
  • the hook portion is formed on an outer peripheral surface of a plurality of protruding portions that protrude from a cylindrical portion of the sensor cover toward an axial side of the hub bearing.
  • the sensor cover includes a cover body made of plastic and a skeleton ring made of metal, the protrusion being formed at an annular portion of the cover body and facing the skeleton ring The axial side protrudes, and the annular portion forms at least a part of the tubular portion.
  • the hook portion is formed as a ridge projecting from the protruding portion toward the radially outer side.
  • the number of protrusions is greater than or equal to three.
  • the hook portion is formed as a ridge continuous along a circumference of the cylindrical portion of the sensor cover, or
  • the hook portion includes a plurality of ridges intermittently along a circumference of the cylindrical portion of the sensor cover; or
  • the hook portion includes a plurality of bumps arranged along a circumference of the cylindrical portion of the sensor cover.
  • the hook portion is formed at a distal side portion of the cylindrical portion of the sensor cover, and the distal end side is for loading a cylindrical portion of the sensor cover to the outer ring It is first inserted into one side of the outer ring.
  • the sensor cover includes a cover body made of plastic and a skeleton ring made of metal, the hook portion being formed at an annular portion of the cover body and larger than a ring of the cover body An outer peripheral surface of the portion and/or an outer peripheral surface of the skeleton ring protrudes outward in the radial direction, and the annular portion forms at least a portion of the tubular portion.
  • the hook portion in the axial section of the hub bearing assembly along the axial direction of the hub bearing, includes a first wall that is inclined relative to the axial direction and opposite to the axial direction a second wall that is inclined, an oblique direction of the first wall with respect to the axial direction is opposite to an oblique direction of the second wall with respect to the axial direction, and the first wall is closer to the second wall than The distal end side of the cylindrical portion of the sensor cover, the first wall forming an angle with the axial direction that is smaller than an angle formed by the second wall and the axial direction.
  • the cylindrical portion of the sensor cover is in an interference fit with the inner circumferential surface of the outer ring.
  • the hook of the sensor cover forms a snap connection with the groove of the outer ring of the hub bearing, the reliability of the mounting of the sensor cover on the outer ring of the hub bearing can be improved, and the outer cover of the sensor cover from the hub bearing can be prevented. Fall off.
  • Figure 1 shows a perspective view of a hub bearing assembly.
  • FIG. 2 shows an axial cross-sectional view of a hub bearing assembly in accordance with a first embodiment of the present invention.
  • FIG. 3A shows a cross-sectional view of a sensor cover of a hub bearing assembly in accordance with a first embodiment of the present invention.
  • FIG. 3B shows a perspective view of a sensor cover of a hub bearing assembly in accordance with a first embodiment of the present invention.
  • Fig. 3C shows a partial enlarged view of Fig. 2.
  • FIG. 4A shows a cross-sectional view of a sensor cover of a hub bearing assembly in accordance with a second embodiment of the present invention.
  • FIG. 4B shows a perspective view of a sensor cover of a hub bearing assembly in accordance with a second embodiment of the present invention.
  • 100 wheel hub bearing assembly 10 hub bearing; 20 outer ring; 21 slot; 30 inner ring; 40 rolling elements; 50, 250 sensor cover; 60 cover body; 61 sensor mounting portion; 62 annular portion; 63 protruding portion; 63A protruding Main body; 63B, 263B ridge; 63B1 first wall; 63B2 second wall; 64 flange; 65 groove; 70 skeleton ring; 71 one leg of the L-shaped cross section of the skeleton ring, 72 L-shaped cross section of the skeleton ring Another leg; 80 seal ring;
  • the axial direction A refers to the axial direction of the hub bearing 10
  • the radial direction R refers to the radial direction of the hub bearing 10
  • the circumferential direction C refers to the circumferential direction of the hub bearing 10.
  • the axial direction A, the radial direction R, and the circumferential direction C coincide with the axial, radial, and circumferential directions of the annular portion 62 of the sensor covers 50, 250, respectively.
  • a first embodiment of the present invention provides a hub bearing assembly 100.
  • the hub bearing assembly 100 includes a hub bearing 10 and a sensor cover 50.
  • the hub bearing 10 includes an outer ring 20, an inner ring 30, and rolling elements 40 between the outer ring 20 and the inner ring 30.
  • the hub bearing 10 is a double row ball bearing, however, the invention is not limited thereto.
  • the sensor cover 50 includes a cover main body 60 made of, for example, plastic and a skeleton ring 70 made of, for example, metal.
  • the cover main body 60 includes an annular portion 62 on one side in the axial direction (the left side in FIG. 2) and a sensor mounting portion 61 on the other side in the axial direction.
  • the skeleton ring 70 is fixed to the annular portion 62 by, for example, overmolding.
  • the sensor mounting portion 61 is for mounting a sensor.
  • the signal measured by the sensor can be used, for example, in an anti-lock braking system (ABS).
  • ABS anti-lock braking system
  • the skeleton ring 70 may have a substantially L-shaped cross section, and one leg portion 71 of the L-shaped section of the skeleton ring 70 is attached to the outer peripheral surface of the annular portion 62, the skeleton ring 70 The other leg portion 72 of the L-shaped cross section is embedded in the flange 64 of the cover body 60 to enhance the adhesion strength between the skeleton ring 70 and the cover body 60.
  • the cover body 60 further includes a flange 64 that projects radially outward than the annular portion 62.
  • the flange 64 can be used to determine the axis of the sensor cover 50 relative to the outer ring 20 when the sensor cover 50 is mounted to the outer ring 20.
  • a groove 65 for accommodating the seal ring 80 may be provided. After the sensor cover 50 is mounted to the outer ring 20, the seal ring 80 is positioned between the outer ring 20 and the sensor cover 50 to enhance the seal.
  • the skeleton ring 70 forms an interference fit with the inner circumferential surface of the outer ring 20.
  • a plurality of (for example, but not limited to, the illustration) are formed at the annular portion 62 of the sensor cover 50.
  • the protrusions 63 of the five) protrusions 63 can be hooked to the slots 21 of the outer ring 20.
  • the number of the protrusions 63 is greater than or equal to three.
  • the plurality of protrusions 63 protrude from the annular portion 62 in the axial direction A, and the plurality of protrusions 63 are preferably evenly arranged along the circumferential direction of the annular portion 62.
  • Each of the projections 63 includes a projection main body 63A that protrudes from the annular portion 62 and a ridge 63B that protrudes radially outward from the outer circumferential surface of the projection main body 63A.
  • the ridge 63B is exemplified as the hook portion of the present invention.
  • the ridge 63B projects radially outward of the outer circumferential surface of the skeleton ring 70.
  • the ridge 63B extends over the entire width of the projection main body 63A along the circumferential direction C.
  • Fig. 3C shows an enlarged view of the portion of Fig. 2 (near the ridge 63B).
  • the ridge 63B includes a first wall 63B1 on the axial side (the distal end side of the projection 63) and a second wall 63B2 on the other axial side (the proximal end side of the projection 63).
  • the direction in which the first wall 63B1 is inclined with respect to the axial direction A is opposite to the direction in which the second wall 63B2 is inclined with respect to the axial direction A.
  • the angle B1 between the first wall 63B1 and the axial direction A is smaller than the angle B2 between the second wall 63B2 and the axial direction A.
  • the second wall 63B2 abuts against the inner wall of the groove 21.
  • the first wall 63B1 of the ridge 63B of the protruding portion 63 first contacts the inner peripheral surface of the outer ring 20 such that the protruding portion 63 is deformed radially inward; with the sensor cover Further insertion of 50, after the top of the ridge 63B is inserted into the groove 21 of the outer ring 20, the projection 63 is restored toward the radially outer side, and the final ridge 63B is accommodated in the groove 21.
  • the snap-fit connection of the plurality of protruding portions 63 with the groove 21 and the interference fit of the annular portion 62 (the skeletal ring 70) and the inner circumferential surface of the outer ring 20 enable the sensor cover 50 to be secured even if the sensor cover 50 is subjected to an impact
  • the mounting strength and stability of the outer ring 20 prevent the sensor cover 50 from coming off.
  • the present invention can extend the useful life of the hub bearing assembly 100.
  • the manufacture of the outer ring 20 in order to seal the joint between the outer ring 20 and the sensor cover 50 (the inner peripheral surface of the other end of the outer ring in the axial direction), it is usually necessary to grind the inner peripheral surface of the outer ring 20, thereby
  • the trough 21 is already present in many existing outer rings 20, in which case it is not necessary to machine the trough 21 separately for the purposes of the present invention. This means that the present invention does not require additional processing of the outer ring 20, thus eliminating the additional cost of machining the slot 21.
  • the protrusion 63 is preferably formed in the annular portion 62 as described in the above embodiment. This is because, in some instances, the skeleton ring 70 made of metal is not thin enough to provide sufficient elastic restoring force. Further, in the case where the skeleton ring 70 is formed only by punching, the formation of the projection on the skeleton ring 70 may cause scratches on the inner circumferential surface of the outer ring 20 when the skeleton ring 70 (sensor cover 50) is attached to the outer ring 20. This may affect the seal between the outer ring 20 and the sensor cover 50.
  • FIGS. 4A and 4B illustrate a sensor cover 250 of a hub bearing assembly in accordance with a second embodiment of the present invention.
  • the same or similar reference numerals are given to the same or like components as those of the first embodiment, and a detailed description of these components will be omitted.
  • the sensor cover 250 includes a cover body 60 and a skeletal ring 70.
  • the annular portion 62 of the cap body 60 protrudes toward the axial direction from the skeleton ring 70, and the ridge 263B protrudes outward in the radial direction from the distal end portion on the axial side of the annular portion 62.
  • the ridge 263B may have a structure similar to that of the ridge 63B of the first embodiment. In the present embodiment, the ridge 263B can be formed over the entire circumference (360 degrees) of the annular portion 62 along the circumferential direction C.
  • a plurality of intermittent ridges may be formed along the circumferential direction of the annular portion 62.
  • a plurality of bumps may be formed along the circumferential direction of the annular portion 62.
  • the continuous ridge 263B, the plurality of intermittent ridges, and the plurality of bumps as an example of the hook portion of the present invention form a snap connection with the outer ring 20 of the hub bearing 10.
  • the ridge 263B is formed in the annular portion 62 as compared with the protruding portion 63 in which the ridge 63B in the first embodiment is formed from the annular portion 62. Therefore, in the second embodiment
  • the annular portion 62 provides greater rigidity to the ridge 263B. Since the annular portion 62 is more difficult to deform than the protruding portion 63, the interference of the inner circumferential surface or the groove 21 of the ridge 263B and the outer ring 20 may be slightly smaller than the inner circumferential surface of the ridge 63B and the outer ring 20 or the groove 21 The interference amount facilitates mounting of the sensor cover 250 to the outer ring 20 while ensuring the mounting strength of the sensor cover 250 to the outer ring 20.
  • one leg portion 71 of the L-shaped cross section of the skeleton ring 70 is fixed to the outer peripheral surface of the annular portion 62, however, the present invention is not limited thereto.
  • one leg portion 71 of the L-shaped cross section of the skeleton ring 70 may be provided on the inner circumferential surface of the annular portion 62 or embedded in the annular portion 62, and in some cases, the skeleton ring 70 may be omitted.
  • cylindrical portion of the sensor cover 50, 250 referred to in the present application refers to the annular portion 62 of the cover main body 60 and one leg portion 71 of the L-shaped cross section of the skeleton ring 70, or the ring shape of the cover main body 60. Portion 62 (in the absence of skeleton ring 70).
  • cross section of the skeleton ring 70 is not limited to the L shape.
  • the cover main body is made of plastic
  • the cover main body includes plastic, and for example, reinforcing fibers or the like may be added to the plastic which is formed into the cover main body.
  • the metal includes a metal alloy.

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  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)

Abstract

一种轮毂轴承组件（100），其包括轮毂轴承（10）和安装到轮毂轴承（10）的传感器盖（50，250），传感器盖（50，250）包括过盈装配到轮毂轴承（10）的外圈（20）的内周面的筒状部。外圈（20）的内周面形成有沿轮毂轴承（10）的周向延伸的槽（21），传感器盖（50，250）包括比筒状部朝向轮毂轴承（10）的径向外侧凸出的钩部（63B，263B），钩部（63B，263B）伸入到槽（21）中，从而在钩部（63B，263B）和槽（21）之间形成卡扣连接。由于传感器盖（50，250）的钩部（63B，263B）与轮毂轴承（10）的外圈（20）的槽（21）形成卡扣连接，可以提高传感器盖（50，250）在轮毂轴承（10）的外圈（20）上的安装可靠性，防止传感器盖（50，250）从轮毂轴承（10）的外圈（20）脱落。

Description

轮毂轴承组件 技术领域
本发明涉及轴承领域，更特别地涉及一种轮毂轴承组件。
背景技术
图1示出了一种轮毂轴承组件，其包括轮毂轴承1和传感器盖2。传感器盖2用于在其传感器安装部3中安装传感器，以检测编码器或脉冲圈信号数据。传感器盖2是轮毂轴承组件的重要部件之一。传感器盖2还起到密封功能。
通常，轮毂轴承1包括外圈、内圈、位于外圈和内圈之间的滚动体。传感器盖2包括通过例如包覆注塑制成的盖主体和骨架环，骨架环固定于盖主体的轴向一端，并与外圈的内周面过盈配合，从而将传感器盖2固定到轮毂轴承1。
在实际应用中，外圈和传感器盖2之间的过盈由于一些原因而不足够。在盖2上产生冲击时，可能引起传感器盖2的脱落，这将导致轮毂轴承故障。
发明内容
本发明的目的在于克服或至少减轻上述现有技术存在的不足，提供一种可以提高传感器盖在轮毂轴承的外圈上的安装可靠性的轮毂轴承组件。
提供一种轮毂轴承组件，其包括轮毂轴承和安装到所述轮毂轴承的传感器盖，所述传感器盖包括过盈装配到所述轮毂轴承的外圈的内周面的筒状部，
其中，所述外圈的内周面形成有沿所述轮毂轴承的周向延伸的槽，所述传感器盖包括比所述筒状部朝向所述轮毂轴承的径向外侧凸出的钩部，所述钩部伸入到所述槽中，从而在所述钩部和所述槽之间形成卡扣连接。
在至少一个实施方式中，所述钩部形成于从所述传感器盖的筒状部朝向所述轮毂轴承的轴向一侧突出的多个突出部的外周面。
在至少一个实施方式中，所述传感器盖包括由塑料制成的盖主体和由金属制成的骨架环，所述突出部形成于所述盖主体的环状部并比所述骨架环朝向所述轴向一侧突出，所述环状部形成所述筒状部的至少一部分。
在至少一个实施方式中，所述钩部形成为从所述突出部朝向所述径向外侧凸出的凸脊。
在至少一个实施方式中，所述突出部的数量大于或等于3个。
在至少一个实施方式中，所述钩部形成为沿着所述传感器盖的筒状部的周向连续的凸脊，或者
所述钩部包括沿着所述传感器盖的筒状部的周向断续的多个凸脊；或者
所述钩部包括沿着所述传感器盖的筒状部的周向布置的多个凸点。
在至少一个实施方式中，所述钩部形成于所述传感器盖的筒状部的远端侧部分，所述远端侧是在将所述传感器盖的筒状部装入到所述外圈时首先插入到所述外圈的一侧。
在至少一个实施方式中，所述传感器盖包括由塑料制成的盖主体和由金属制成的骨架环，所述钩部形成于所述盖主体的环状部并比所述盖主体的环状部的外周面和/或所述骨架环的外周面朝向所述径向外侧凸出，所述环状部形成所述筒状部的至少一部分。
在至少一个实施方式中，在所述轮毂轴承组件的沿着所述轮毂轴承的轴向的截面中，所述钩部包括相对于所述轴向倾斜的第一壁和相对于所述轴向倾斜的第二壁，所述第一壁相对于所述轴向的倾斜方向与所述第二壁相对于所述轴向的倾斜方向相反，所述第一壁比所述第二壁靠近所述传感器盖的筒状部的远端侧，所述第一壁与所述轴向形成的夹角小于所述第二壁与所述轴 向形成的夹角。
在至少一个实施方式中，所述传感器盖的筒状部与所述外圈的内周面过盈配合。
在本发明中，由于传感器盖的钩与轮毂轴承的外圈的槽形成卡扣连接，所述可以提高传感器盖在轮毂轴承的外圈上的安装可靠性，防止传感器盖从轮毂轴承的外圈脱落。
附图说明
图1示出了一种轮毂轴承组件的立体图。
图2示出了根据本发明的第一实施方式的轮毂轴承组件的轴向截面图。
图3A示出了根据本发明的第一实施方式的轮毂轴承组件的传感器盖的剖视图。
图3B示出了根据本发明的第一实施方式的轮毂轴承组件的传感器盖的立体图。
图3C示出了图2的局部放大示意图。
图4A示出了根据本发明的第二实施方式的轮毂轴承组件的传感器盖的剖视图。
图4B示出了根据本发明的第二实施方式的轮毂轴承组件的传感器盖的立体图。
附图标记说明
1轮毂轴承；2传感器盖；3传感器安装部；
100轮毂轴承组件；10轮毂轴承；20外圈；21槽；30内圈；40滚动体；50、250传感器盖；60盖主体；61传感器安装部；62环状部；63突出部；63A突出部主体；63B、263B凸脊；63B1第一壁；63B2第二壁；64凸缘；65凹槽；70骨架环；71骨架环的L形截面的一个腿部， 72骨架环的L形截面的另一个腿部；80密封圈；
A轴向；R径向；C周向。
具体实施方式
下面参照附图描述本发明的示例性实施方式。
在下文中，如无特别说明，轴向A是指轮毂轴承10的轴向，径向R是指轮毂轴承10的径向，周向C是指轮毂轴承10的周向。该轴向A、径向R和周向C分别与传感器盖50、250的环状部62的轴向、径向和周向一致。
第一实施方式
参照图2至图3C，本发明的第一实施方式提供一种轮毂轴承组件100。该轮毂轴承组件100包括轮毂轴承10和传感器盖50。轮毂轴承10包括外圈20、内圈30、位于外圈20和内圈30之间的滚动体40。在图2所示的示例中，该轮毂轴承10为双列球轴承，然而，本发明不限于此。
传感器盖50包括由例如塑料制成的盖主体60和由例如金属制成的骨架环70。盖主体60包括位于轴向一侧(图2中的左侧)的环状部62和位于轴向另一侧的传感器安装部61。骨架环70通过例如包覆注塑与环状部62固定到一起。传感器安装部61用于安装传感器。该传感器测得的信号可以例如用于防抱死制动系统(ABS)。
如图3A所示，在图示的示例中，骨架环70可以具有大致L形的截面，骨架环70的L形截面的一个腿部71附着到环状部62的外周面，骨架环70的L形截面的另一个腿部72埋设在盖主体60的凸缘64中，以增强骨架环70与盖主体60之间的附着强度。
盖主体60还包括比环状部62朝向径向外侧凸出的凸缘64，在将传感器盖50安装到外圈20时，凸缘64可以用于确定传感器盖50相对于外圈20的轴向位置。在环状部62和凸缘64之间的连接部处，可以设置用于收纳密封圈80的凹槽65。在将传感器盖50安装到外圈20之后，密封圈80被定位在外圈20和传感 器盖50之间，以增强密封。
在将传感器盖50安装到轮毂轴承10时，骨架环70与外圈20的内周面形成过盈配合。
在本实施方式中，为了提高传感器盖50与外圈20之间的安装可靠性，防止传感器盖50意外脱落，在传感器盖50的环状部62处形成多个(例如，但不限于图示的5个)突出部63，突出部63可以钩挂于外圈20的槽21。优选地，突出部63的数量大于或等于3个。
更具体地，多个突出部63沿轴向A从环状部62突出，多个突出部63优选地沿着环状部62的周向均匀布置。每个突出部63均包括从环状部62伸出的突出部主体63A和从突出部主体63A的外周面向径向外侧凸出的凸脊63B。凸脊63B作为本发明的钩部的示例。在轮毂轴承10的径向R上，凸脊63B比骨架环70的外周面向径向外侧凸出。优选地，凸脊63B在突出部主体63A的沿着周向C的整个宽度上延伸。
图3C示出了图2的局部(凸脊63B附近的)放大图。在该截面图中，凸脊63B包括位于轴向一侧(突出部63的远端侧)的第一壁63B1和位于轴向另一侧(突出部63的近端侧)的第二壁63B2。第一壁63B1相对于轴向A的倾斜方向与第二壁63B2相对于轴向A的倾斜方向相反。第一壁63B1与轴向A所成的夹角B1小于第二壁63B2与轴向A所成的夹角B2。在突出部63插入到外圈20内使得凸脊63B容纳在槽21中时，第二壁63B2与槽21的内壁抵接。在该结构中，便于经由第一壁63B1使突出部63插入到外圈20的内周面的槽21中，同时确保了凸脊63B不易沿轴向A从槽21脱离。
在将传感器盖50加压插入到外圈20时，突出部63的凸脊63B的第一壁63B1首先接触外圈20的内周面，使得突出部63向径向内侧变形；随着传感器盖50的进一步插入，在凸脊63B的顶部插入到外圈20的槽21之后，突出部63朝向径向外侧回复，最终凸脊63B被容纳在槽21中。多个突出部63与槽21的卡扣连接以及环状部62(骨架环70)与外圈20的内周面的过盈配合使得，即 使传感器盖50受到冲击，也能够确保传感器盖50到外圈20的安装强度、稳定性，防止传感器盖50脱落。因而，本发明可以延长轮毂轴承组件100的使用寿命。
在外圈20的制造中，为了实现外圈20与传感器盖50的连接部位(外圈的轴向另一端的内周面)的密封，通常需要对外圈20的内周面进行磨削加工，因而，槽21已经存在于很多现有的外圈20中，在这种情况下，无需为了本发明的目的而另外加工槽21。这意味着，本发明不需要对外圈20做额外的加工处理，因而无需加工槽21导致的额外成本。
虽然本申请不明确排除，但是，如上述实施方式中描述的，突出部63优选地形成于环状部62。这是因为，在一些实例中，由金属制成的骨架环70由于较薄而无法提供足够的弹性回复力。另外，在仅通过冲压形成骨架环70的情况下，在骨架环70上形成突出部可能会在将骨架环70(传感器盖50)安装到外圈20时在外圈20的内周面产生划痕，这可能影响外圈20与传感器盖50之间的密封。
第二实施方式
图4A和图4B示出了根据本发明的第二实施方式的轮毂轴承组件的传感器盖250。对于与第一实施方式相同或相似的部件标注相同或相似的附图标记，并省略对这些部件的详细说明。
该传感器盖250包括盖主体60和骨架环70。盖主体60的环状部62比骨架环70更朝向轴向一侧突出，凸脊263B从环状部62的轴向一侧的远端部朝向径向外侧凸出。凸脊263B可以具有与第一实施方式的凸脊63B相似的结构。在本实施方式中，凸脊263B可以沿着周向C形成于环状部62的整周(360度)。
在另一未示出的示例中，沿着环状部62的周向，可以形成多段断续的凸脊。在再一未示出的示例中，沿着环状部62的周向，可以形成多个凸点。作为本发明的钩部的示例的该连续的凸脊263B、多段断续的凸脊、多个凸点与轮毂轴承10的外圈20形成卡扣连接。
与第一实施方式中的凸脊63B形成于从环状部62伸出的突出部63相比，在第二实施方式中，凸脊263B形成于环状部62，因而，在第二实施方式中，环状部62为凸脊263B提供了更大的刚性。由于环状部62比突出部63难于变形，因而，凸脊263B与外圈20的内周面或槽21的过盈量可以略小于凸脊63B与外圈20的内周面或槽21的过盈量，这在确保传感器盖250到外圈20的安装强度的同时，便于将传感器盖250安装到外圈20。
当然，本发明不限于上述实施方式，本领域技术人员在本发明的教导下可以对本发明的上述实施方式做出各种变型，而不脱离本发明的范围。
(1)在上述实施方式中，骨架环70的L形截面的一个腿部71固定到环状部62的外周面，然而，本发明不限于此。例如，骨架环70的L形截面的一个腿部71可以设置于环状部62的内周面或者埋设在环状部62中，在一些情况下，甚至可以省略骨架环70。
应当理解，本申请中提到的传感器盖50、250的筒状部是指盖主体60的环状部62和骨架环70的L形截面的一个腿部71，或指盖主体60的环状部62(在不存在骨架环70的情况下)。
当然，骨架环70的截面不限于L形。
(2)在本申请中，当提到盖主体由塑料制成时，是指盖主体包括塑料，例如，可以在制成盖主体的塑料中加入增强纤维等。
在本申请中，当提到骨架环由金属制成时，该金属包括金属合金。

Claims (10)

  1. 一种轮毂轴承组件，其包括轮毂轴承和安装到所述轮毂轴承的传感器盖，所述传感器盖包括过盈装配到所述轮毂轴承的外圈的内周面的筒状部，
    其中，所述外圈的内周面形成有沿所述轮毂轴承的周向延伸的槽，所述传感器盖包括比所述筒状部朝向所述轮毂轴承的径向外侧凸出的钩部，所述钩部伸入到所述槽中，从而在所述钩部和所述槽之间形成卡扣连接。
  2. 根据权利要求1所述的轮毂轴承组件，其特征在于，所述钩部形成于从所述传感器盖的筒状部朝向所述轮毂轴承的轴向一侧突出的多个突出部的外周面。
  3. 根据权利要求2所述的轮毂轴承组件，其特征在于，所述传感器盖包括由塑料制成的盖主体和由金属制成的骨架环，所述突出部形成于所述盖主体的环状部并比所述骨架环朝向所述轴向一侧突出，所述环状部形成所述筒状部的至少一部分。
  4. 根据权利要求2所述的轮毂轴承组件，其特征在于，所述钩部形成为从所述突出部朝向所述径向外侧凸出的凸脊。
  5. 根据权利要求2所述的轮毂轴承组件，其特征在于，所述突出部的数量大于或等于3个。
  6. 根据权利要求1所述的轮毂轴承组件，其特征在于，所述钩部形成为沿着所述传感器盖的筒状部的周向连续的凸脊，或者
    所述钩部包括沿着所述传感器盖的筒状部的周向断续的多个凸脊；或者
    所述钩部包括沿着所述传感器盖的筒状部的周向布置的多个凸点。
  7. 根据权利要求6所述的轮毂轴承组件，其特征在于，所述钩部形成于所述传感器盖的筒状部的远端侧部分，所述远端侧是在将所述传感器盖的筒状部装入到所述外圈时首先插入到所述外圈的一侧。
  8. 根据权利要求6所述的轮毂轴承组件，其特征在于，所述传感器盖包括由塑料制成的盖主体和由金属制成的骨架环，所述钩部形成于所述盖主体的环状部并比所述盖主体的环状部的外周面和/或所述骨架环的外周面朝向所述径向外侧凸出，所述环状部形成所述筒状部的至少一部分。
  9. 根据权利要求1至8中任一项所述的轮毂轴承组件，其特征在于，在所述轮毂轴承组件的沿着所述轮毂轴承的轴向的截面中，所述钩部包括相对于所述轴向倾斜的第一壁和相对于所述轴向倾斜的第二壁，所述第一壁相对于所述轴向的倾斜方向与所述第二壁相对于所述轴向的倾斜方向相反，所述第一壁比所述第二壁靠近所述传感器盖的筒状部的远端侧，所述第一壁与所述轴向形成的夹角小于所述第二壁与所述轴向形成的夹角。
  10. 根据权利要求1至8中任一项所述的轮毂轴承组件，其特征在于，所述传感器盖的筒状部与所述外圈的内周面过盈配合。
PCT/CN2018/085895 2018-05-07 2018-05-07 轮毂轴承组件 WO2019213817A1 (zh)

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CN105465185A (zh) * 2014-08-26 2016-04-06 斯凯孚公司 具有密封盖的滚动轴承，特别是车辆轮毂轴承单元

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JP2007001341A (ja) * 2005-06-21 2007-01-11 Ntn Corp 車輪用軸受装置
JP2007309389A (ja) * 2006-05-17 2007-11-29 Nsk Ltd ハブユニット軸受
JP2012036960A (ja) * 2010-08-06 2012-02-23 Nsk Ltd 転がり軸受ユニットの密封装置
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