WO2023184075A1 - 导电环 - Google Patents

导电环 Download PDF

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Publication number
WO2023184075A1
WO2023184075A1 PCT/CN2022/083326 CN2022083326W WO2023184075A1 WO 2023184075 A1 WO2023184075 A1 WO 2023184075A1 CN 2022083326 W CN2022083326 W CN 2022083326W WO 2023184075 A1 WO2023184075 A1 WO 2023184075A1
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WO
WIPO (PCT)
Prior art keywords
lip
conductive ring
conductive
elastic conductor
contact
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PCT/CN2022/083326
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English (en)
French (fr)
Inventor
张岳林
刘鑫
Original Assignee
舍弗勒技术股份两合公司
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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/CN2022/083326 priority Critical patent/WO2023184075A1/zh
Publication of WO2023184075A1 publication Critical patent/WO2023184075A1/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
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30—Parts 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
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/72—Sealings
    • F16C33/76—Sealings of ball or roller bearings
    • F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R39/00—Rotary current collectors, distributors or interrupters
    • H01R39/02—Details for dynamo electric machines
    • H01R39/08—Slip-rings
    • H01R39/12—Slip-rings using bearing or shaft surface as contact surface

Definitions

  • the present invention relates to the technical field of conductive devices.
  • the invention relates to an electrically conductive ring for use between two rotating parts.
  • Conductive sealing devices need to be installed in the rotating parts of many machines. Especially in the field of deep groove ball bearings used in electrification such as power transmission or electric vehicles, conductive dynamic seals with sufficient strength are required. These conductive sealing devices are usually annular in shape and include a skeleton and an elastic conductor.
  • the frame is made of rigid material so as to be fixed on the radially outer rotating component through a tight fit (or interference fit).
  • An elastic conductor is fixed on the frame and extends from one or more lips.
  • some conductive sealing devices require lubricating oil to flow smoothly through the conductive sealing device and bearings to lubricate other components. Both sides of this conductive seal are filled with lubricating oil. As the lubricating oil flows from one side of the conductive sealing device to the other side, the conductive lip of the conductive sealing device that is in contact with the radially inner parts is easily pushed away by the lubricating oil, causing the conductive lip to be out of contact with the radially inner parts. , which in turn causes the conductive sealing device to lose its conductive properties. Therefore, how to maintain stable contact between the conductive lip and the radially inner components to improve the conductive performance is an issue that needs to be solved urgently.
  • the present invention provides a conductive ring.
  • the conductive ring provided by the embodiment of the present invention includes: an annular skeleton and an annular elastic conductor, wherein the elastic conductor is fixedly arranged on the radial inner side of the skeleton; the elastic conductor includes an annular base and a lip. part, the base of the elastic conductor is fixed on the frame, the lip extends radially inward from the base, and the end of the lip extending radially inward exceeds the radial inward side of the frame. The end; wherein, one side of the lip in the axial direction is provided with a squeeze arm.
  • the extrusion arm is in the shape of a sheet, and the plane of the extrusion arm in the form of a sheet is arranged to pass through the central axis of the annular elastic conductor.
  • the radially inner edge of the squeeze arm is flush with the radially inner edge of the lip.
  • the radially outer edge of the skeleton has a plurality of openings evenly distributed in the circumferential direction, the openings form oil grooves, and the portion of the skeleton between each two openings forms a tooth portion.
  • the lip portion includes at least one non-contact lip portion and at least one contact lip portion.
  • the pressing arm is disposed on a side of the contact lip away from the non-contact lip in an axial direction.
  • the non-contact lip includes a primary non-contact lip extending toward a radially inward direction and a secondary non-contact lip extending toward an axial direction.
  • the contact lip includes a conductive polytetrafluoroethylene (PTFE) material layer, and the PTFE material layer is integrally formed with the contact lip.
  • PTFE conductive polytetrafluoroethylene
  • the elastic conductor is made of conductive rubber.
  • conductive rings require large amounts of lubricating oil to lubricate other components.
  • the lip of the conductive ring specifically the contact lip
  • the lip of the conductive ring is easily pushed away by the lubricating oil, causing the lip to contact radially inward components, such as the inner ring, Non-contact, resulting in the conductive ring losing its conductive properties.
  • the conductive ring provided by the embodiment of the present invention, by arranging a squeeze arm on one side of the lip in the axial direction, the lip of the conductive ring can have additional radial force to ensure the contact between the lip and the inner ring. Stable contact enables the conductive ring to have stable conductive properties.
  • Figure 1 shows a partial cross-sectional view of a conductive ring according to an embodiment of the invention
  • Figure 2 shows a perspective view of a conductive ring according to an embodiment of the present invention
  • Figure 3 shows a partial enlarged schematic view of the conductive ring according to the present invention.
  • a conductive ring is provided.
  • This kind of conductive ring is used to conduct electricity between various rotating parts that require a large amount of lubricating oil.
  • it can be installed between the outer ring and the inner ring of a deep groove ball bearing, or between the bearing and the rotating shaft.
  • the conductive ring is particularly suitable for working environments that require the passage of a large amount of lubricating oil.
  • FIG. 1 shows a partial cross-sectional view of a conductive ring according to an embodiment of the present invention
  • FIG. 2 shows a perspective view of the conductive ring according to an embodiment of the present invention.
  • the conductive ring is annular as a whole.
  • Shown in Figure 1 is a representative portion of a section through the central axis of the annular shape.
  • the conductive ring is installed in the annular space between the two rotating parts.
  • the two rotating components are the outer ring 1 and the inner ring 2 of the bearing.
  • the outer ring 1 and the inner ring 2 are basically arranged around a common axis of rotation and can relatively rotate around the axis of rotation, wherein the outer ring 1 is located radially outside the inner ring 2 .
  • the central axis of the conductive ring is arranged substantially coincident with the rotation axis of the bearing.
  • the conductive ring may include an annular skeleton 3 and an annular elastic conductor 4.
  • the elastic conductor 4 is fixedly arranged on the radial inner side of the skeleton 3; the skeleton 3 and the elastic conductor 4
  • the electrical conductor 4 is arranged rotatably about the axis of rotation.
  • the elastic conductor 4 includes a base and a lip.
  • the base of the elastic conductor 4 is formed to fit the surface of the radially inner part of the frame 3 by vulcanization, and is fixed to the radially inner part of the frame 3; the lip faces from The base portion generally extends radially inward, and the end portion of the lip extending radially inward exceeds the radially inward end portion of the frame 3 .
  • the skeleton 3 and the elastic conductor 4 are coaxially arranged around the rotation axis.
  • the skeleton 3 and the elastic conductor 4 separate a first side S1 and a second side S2 in the axial direction.
  • the frame 3 may be made of metal or other conductive materials with sufficient stiffness.
  • the conductive material here can be various conductive materials with suitable mechanical properties, such as conductive plastics.
  • the conductive plastic can meet the stiffness requirements and can provide structural support for the elastic conductor 4.
  • the plastic material is easy to process, and can be easily formed into various required shapes through injection molding, for example.
  • the skeleton 3 can be fixed radially inside the outer ring 1 by, for example, an interference fit, so that it can rotate with the outer ring 1 relative to the inner ring 2 .
  • an annular groove 11 can also be provided on the radial inner side of the outer ring 1 , so that the radial outer side of the frame 3 can be embedded in the annular groove 11 of the outer ring 1 and fixed.
  • the radially outer edge of the frame 3 has a plurality of openings evenly distributed along the circumferential direction. The openings form oil grooves 5 , and the portion of the frame 3 between each two openings forms a tooth portion 31 .
  • FIG 3 shows a partial enlarged schematic view of the conductive ring according to the present invention.
  • a squeeze arm 6 is provided on one side of the lip in the axial direction. Specifically, the squeeze arm 6 is provided on the side of the lip facing away from the entry of lubricating oil. For example, as shown in Figure 1, if the lubricating oil flows from the first side S1 to the second side S2, the squeeze arm 6 is disposed on the side of the lip facing the second side S2; and vice versa.
  • the squeeze arm 6 can be in the shape of a sheet, and the plane of the sheet-like squeeze arm 6 is arranged to pass the central axis of the annular elastic conductor 4, so that the lubricating oil entering the second side S2 is It gathers near the contact point between the lip and the inner ring.
  • the outer ring 1 and the conductive ring rotate relative to the inner ring 2, the lubricating oil accumulated near the squeeze arm 6 pushes the squeeze arm 6 in the circumferential direction.
  • the squeezing force generated when the squeezing arm 6 is pushed by the lubricating oil on the second side S2 has a squeezing component toward the radially inward side of the lip. and the squeezing component towards the first side S1.
  • the lubricating oil located on the first side S1 When the lubricating oil located on the first side S1 generates a pushing force on the lip toward the second side S2, the lubricating oil located on the second side S2 and collected between the plurality of extruding arms 6 can push the extruding arms 6, and then The lip is pressed radially inward and toward the first side S1 to prevent the lip from being separated from the inner ring 2, so that the lip and the inner ring 2 continue to be in contact, thereby improving the conductive stability of the conductive ring.
  • the radially inner edge of the squeeze arm 6 is flush with the radially inner edge of the lip. Further, the radially outer edge of the squeeze arm 6 is located between the lip and the base. Further, the radially outer edge of the extrusion arm 6 may be disposed further toward the radially outer side, for example, the radially outer edge of the extrusion arm 6 may be disposed on the base. In this way, the larger the contact area between the lubricating oil on the second side S2 and the squeeze arm 6, the greater the thrust force received by the squeeze arm 6, and the better the squeezing effect on the lip.
  • the elastic conductor 4 may be made of elastic conductive material such as conductive rubber.
  • the elastic conductor 4 includes a base and at least one lip.
  • the base is fixed on the frame 3 .
  • the lip extends from the base in a generally radially inward direction, or generally in a radially inward and axially inclined direction.
  • the lip of the elastic conductor 4 is an annular structure surrounding the rotation axis.
  • the base and the lip may be integrally formed.
  • the lip includes at least one non-contact lip 41 and at least one contact lip 42 .
  • the non-contact lip 41 extends from the base in a generally radially inward direction, or generally in a radially inward and axially inclined direction; the extended end of the non-contact lip 41 is in contact with the inner ring. There is a certain gap between the radial outer sides of 2.
  • the contact lip 42 extends generally toward the radially inner direction, or generally toward the radial inner side and in an axially inclined direction; and the extended end of the contact lip 42 contacts the radially outer side of the inner ring 2, and
  • the contact lip 42 is made movable relative to the inner ring 2 to form a dynamic contact fit between the conductive ring and the inner ring 2 .
  • the pressing arm 6 is disposed on a side of the contact lip 42 away from the non-contact lip 41 in the axial direction.
  • the radially outer side of the inner ring 2 has an annular groove 21 at a position corresponding to the conductive ring.
  • the lip has two non-contact lips 41, including a main non-contact lip 41a extending toward the radially inward direction and an auxiliary non-contact lip extending generally toward the radially inward direction and biased toward the axial direction of the first side S1.
  • Contact lip 41b The main non-contact lip 41a extends toward the radially inward direction into the groove 21 of the inner ring 2, and has a certain gap between the side wall 211 and the bottom 212 of the groove 21. There is a certain gap between the secondary non-contact lip 41b and the radially inner side of the inner ring.
  • the lip also has a contact lip 42 extending radially inward and obliquely to the axial direction of the second side S2 and in contact with the radially outer side of the inner ring 2 .
  • the lubricating oil or other impurities from the first side S1 can be effectively blocked from passing through the conductive ring, and the lubricating oil or other impurities can be blocked in the groove 21 of the inner ring 2, so as to This reduces the impact of the lubricating oil on the contact lip 42 when it flows through the conductive ring, thereby protecting the contact lip 42 .
  • the contact lip 42 includes a conductive polytetrafluoroethylene (PTFE) material layer.
  • the PTFE material layer lubricates and protects the contact lip 42 to increase the service life of the conductive ring.
  • the layer of PTFE material may be integrally formed with the contact lip 42 .
  • the contact lip 42 may also include a wear-resistant conductive coating.
  • the present invention is directed to the electrical conduction between rotating parts, especially the electrical conduction between the rotating parts of deep groove ball bearings in electrification applications such as power transmission or electric vehicles that require a large amount of lubricating oil to pass through.
  • the technical solution of the present invention can also be applied to conductive rings of other structures, and is not limited to the specific components of the specific conductive rings shown in the embodiments.
  • the structure of the conductive ring can be variously changed, and the number, shape and arrangement of the squeeze arms 6 can be variously changed, and are not limited to the description of the embodiment and what is shown in the drawings. type.
  • lips of different shapes and numbers can also be provided, which will not be described again.

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

Abstract

本发明涉及一种导电环。所述导电环包括：环形的骨架和环形的弹性导电体，所述弹性导电体固定设置在所述骨架的径向内侧；所述弹性导电体包括环形的基部和唇部，所述弹性导电体的基部固定在所述骨架上，所述唇部朝从所述基部朝向径向内侧延伸，所述唇部朝向径向内侧延伸的端部超出所述骨架径向内侧的端部；所述唇部的轴向方向的一侧设置有挤压臂。通过本发明的导电环，可以使导电环的唇部具有额外的径向力，保证唇部与内圈的稳定接触，进而使得导电环具有稳定的导电性能。

Description

导电环 技术领域
本发明涉及导电装置技术领域。具体地，本发明涉及一种用于两个转动部件之间的导电环。
背景技术
在许多机械的转动部件中都需要安装导电密封装置。特别是在电力传输或电动汽车等电气化中应用的深沟球轴承的领域中，要求具有足够强度的导电的动态密封。这些导电密封装置通常呈环形，包括骨架和弹性导电体。所述骨架由刚性材料制成，以便通过紧配合(或称为过盈配合)的方式固定在径向外侧的转动部件上。弹性导电体固定在所述骨架上，并且延伸出一个或多个唇部。
在此基础上，一些导电密封装置要求润滑油能顺利地流过该导电密封装置和轴承以润滑其他部件。该导电密封装置的两侧都充满了润滑油。随着润滑油从导电密封装置的一侧向另一侧流动，该导电密封装置的与径向内侧的部件接触的导电唇容易被润滑油推开，导致导电唇与径向内侧的部件非接触，进而导致导电密封装置失去导电性能。因此，如何保持导电唇与径向内侧的部件稳定接触以提高导电性能是亟待解决的问题。
发明内容
为解决以上技术问题，本发明提供一种导电环。
本发明的实施例提供的导电环包括：环形的骨架和环形的弹性导电体，其中，所述弹性导电体固定设置在所述骨架的径向内侧；所述弹性导电体包括环形的基部和唇部，所述弹性导电体的基部固定在所述骨架上，所述唇部朝从所述基部朝向径向内侧延伸，所述唇部朝向径向内侧延伸的端部超出所述骨架径向内侧的端部；其中，所述唇部的轴向方向的一侧设置有 挤压臂。
根据本发明的一些实施例，其中，所述挤压臂具有多个，沿周向方向均匀分布在唇部的轴向方向的一侧。
根据本发明的一些实施例，其中，所述挤压臂呈薄片状，薄片状的挤压臂被设置为其所处的平面过环形的弹性导电体的中心轴线。
根据本发明的一些实施例，其中，所述挤压臂的径向内侧的边缘与唇部的径向内侧的边缘平齐。
根据本发明的一些实施例，其中，所述骨架的径向外侧边缘具有多个沿周向均匀分布的开口，所述开口形成过油槽，每两个开口之间的骨架的部分形成齿部。
根据本发明的一些实施例，其中，所述唇部包括至少一个非接触唇部和至少一个接触唇部。
根据本发明的一些实施例，其中，所述挤压臂设置在所述接触唇部的轴向方向上远离非接触唇部的一侧。
根据本发明的一些实施例，其中，所述非接触唇部包括朝向径向内侧方向延伸的主非接触唇部和朝向轴向方向延伸的副非接触唇部。
根据本发明的一些实施例，其中，，所述接触唇部包括导电聚四氟乙烯(PTFE)材料层，所述PTFE材料层与所述接触唇部一体成型。
根据本发明的一些实施例，其中，所述弹性导电体由导电橡胶制成。
在电力传输或电动汽车等电气化中的深沟球轴承的应用领域中，导电环要求通过大量的润滑油以润滑其他部件。随着润滑油从导电环的一侧向另一侧流动，该导电环的唇部，具体为接触唇部，容易被润滑油推开，导致唇部与径向内侧的部件，例如内圈，非接触，进而导致导电环失去导电性能。根据本发明的实施例提供的导电环，通过在所述唇部的轴向方向的一侧设置挤压臂，可以使导电环的唇部具有额外的径向力，保证唇部与内圈的稳定接触，进而使得导电环具有稳定的导电性能。
附图说明
为了更清楚地说明本发明实施例的技术方案，下面将对本发明实施例 的描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1示出根据本发明的实施例的导电环的局部剖视图；
图2示出根据本发明的实施例的导电环的立体图；
图3示出根据本发明的导电环的局部放大示意图。
应理解，上述附图仅为示意性的，所述附图并未按照实际的比例绘制。
具体实施方式
为使本公开实施例的目的、技术方案和优点更加清楚，下面将结合本公开实施例的附图，对本公开实施例的技术方案进行清楚、完整地描述。显然，所描述的实施例是本发明的一部分实施例，而不是全部的实施例。基于所描述的本发明的实施例，本领域普通技术人员所获得的所有其他实施例，都属于本发明保护的范围。
根据本发明的实施例，提供了一种导电环。这种导电环用于在各种需要通过大量润滑油的转动部件之间进行导电，例如可以安装在深沟球轴承的外圈与内圈之间，或者安装在轴承与转动轴之间。所述导电环特别适用于要求通过大量的润滑油的工作环境。
图1示出根据本发明的实施例的导电环的局部剖视图；图2示出根据本发明的实施例的导电环的立体图。结合图1-2所示，该导电环整体呈环形。图1中示出的是通过该环形的中心轴线的剖面的代表性部分。如图1所示，该导电环安装在两个转动部件之间的环形空间中。在一些实施例中，这两个转动部件为轴承的外圈1和内圈2。外圈1与内圈2基本围绕共同的转动轴线设置并且可以围绕转动轴线相对转动，其中，外圈1位于内圈2的径向外侧。该导电环的中心轴线与轴承的转动轴线基本重合地布置。
如图1-2所示，所述导电环可以包括环形的骨架3和环形的弹性导电体4，所述弹性导电体4固定设置在所述骨架3的径向内侧；所述骨架3和弹性导电体4围绕转动轴线可转动地布置。所述弹性导电体4包括基部和唇部。所述弹性导电体4的基部例如通过硫化等方式形成贴合所述骨架3 靠近径向内侧的部分的表面，并固定在所述骨架3靠近径向内侧的部分上；所述唇部朝从所述基部大体朝向径向内侧延伸，所述唇部朝向径向内侧延伸的端部超出所述骨架3径向内侧的端部。所述骨架3和弹性导电体4围绕转动轴线同轴设置。所述骨架3以及所述弹性导电体4在轴向方向上分隔出第一侧S1和第二侧S2。
所述骨架3可以由金属或其他具有足够刚度的导电材料制成。这里的导电材料可以是各种具有合适的机械性能的导电材料，例如导电塑料。一方面，所述导电塑料能够满足刚度的需求，可以为弹性导电体4提供结构支撑，另一方面，塑料材料易于加工，例如可以通过注塑成型来方便地形成各种需要的形状。
在一些实施例中，所述骨架3可以例如通过过盈配合的方式固定在外圈1的径向内侧，从而可以随外圈1一起相对于内圈2转动。此外，所述外圈1的径向内侧还可以设置有环形的凹槽11，可以使骨架3的径向外侧嵌入外圈1的环形的凹槽11中固定。所述骨架3的径向外侧边缘具有多个沿周向均匀分布的开口，所述开口形成过油槽5，每两个开口之间的骨架3的部分形成齿部31。
图3示出根据本发明的导电环的局部放大示意图。结合图1-3所示，所述唇部的轴向方向的一侧设置有挤压臂6。具体地，所述挤压臂6设置在唇部的背向润滑油进入的一侧。例如在图1中所示，润滑油从第一侧S1流向第二侧S2，则所述挤压臂6设置在唇部的朝向第二侧S2的一侧；反之亦然。
在一些实施例中，所述挤压臂6具有多个，沿周向方向均匀分布在唇部的朝向第二侧S2的一侧。所述挤压臂6可以呈薄片状，薄片状的挤压臂6被设置为其所处的平面过环形的弹性导电体4的中心轴线，这样，进入第二侧S2一侧的润滑油在唇部与内圈接触位置附近聚集。当外圈1与导电环相对于内圈2旋转时，聚集在挤压臂6附近的润滑油在周向方向上推动挤压臂6。由于唇部与径向方向具有一定夹角θ，因此所述挤压臂6被第二侧S2一侧的润滑油推动时产生的挤压力对唇部具有朝向径向内侧的挤压分力和朝向第一侧S1的挤压分力。当位于第一侧S1的润滑油对唇部产生 朝向第二侧S2推动的力时，位于第二侧S2的汇集在多个挤压臂6之间的润滑油能够推动挤压臂6，进而对唇部朝向径向内侧以及朝向第一侧S1挤压，从而防止唇部与内圈2分离，使得所述唇部与内圈2继续保持接触，提高导电环的导电的稳定性。
在一些实施例中，所述挤压臂6的径向内侧的边缘与唇部的径向内侧的边缘平齐，进一步地，所述挤压臂6的径向外侧的边缘位于唇部与基部之间的连接处，更进一步地，所述挤压臂6的径向外侧的边缘可以设置为更加朝向径向外侧，例如挤压臂的径向外侧设置在基部上。这样，第二侧S2的润滑油与挤压臂6的接触面积越大，所述挤压臂6受到的推力越大，对唇部的挤压效果越好。
在一些实施例中，所述弹性导电体4可以由例如导电橡胶等弹性导电材料制成。所述弹性导电体4包括基部和至少一个唇部。所述基部固定在所述骨架3上。所述唇部从所述基部大体朝向径向内侧的方向，或大体朝向径向内侧并偏向轴向倾斜的方向延伸。弹性导电体4的唇部为围绕转动轴线的环形结构。所述基部和所述唇部可以为一体成型。
进一步地，在一些实施例中，所述唇部包括至少一个非接触唇部41和至少一个接触唇部42。所述非接触唇部41从所述基部大体朝向径向内侧的方向，或大体朝向径向内侧并偏向轴向倾斜的方向延伸；所述非接触唇部41的延伸出的端部与内圈2的径向外侧之间具有一定间隙。而接触唇部42大体朝向径向内侧的方向，或大体朝向径向内侧并偏向轴向倾斜的方向延伸；并且接触唇部42的延伸出的端部与内圈2的径向外侧接触，并且使接触唇部42相对于内圈2可运动，以在导电环与内圈2之间形成动接触配合。在该实施例中，所述挤压臂6设置在所述接触唇部42的轴向方向上远离非接触唇部41的一侧。
在图1所示的实施例中，所述内圈2的径向外侧在对应于导电环的位置具有一个环形的凹槽21。所述唇部具有两个所述非接触唇部41，包括朝向径向内侧方向延伸的主非接触唇部41a和大体朝向径向内侧方向并偏向第一侧S1的轴向方向延伸的副非接触唇部41b。所述主非接触唇部41a朝向径向内侧方向延伸至内圈2的所述凹槽21内，并与所述凹槽21的侧壁 211和底部212之间具有一定间隙。所述副非接触唇部41b与所述内圈的径向内侧之间具有一定间隙。所述唇部还具有一个接触唇部42，朝向径向内侧并向第二侧S2的轴向方向倾斜的方向延伸，并与内圈2的径向外侧接触。
通过设置非接触唇部41，能够有效地阻挡来自第一侧S1的润滑油或其他杂质通过所述导电环，并将所述润滑油或其他杂质阻挡在内圈2的凹槽21中，以减少润滑油流过导电环时对接触唇部42的冲击，进而对接触唇部42起到保护作用。
进一步地，所述接触唇部42包括导电聚四氟乙烯(PTFE)材料层。所述PTFE材料层对所述接触唇部42起到润滑和保护的作用，以提高导电环的使用寿命。所述PTFE材料层可与所述接触唇部42一体成型。可选地，所述接触唇部42还可以包括耐磨导电涂层。
需要注意的是，本发明旨在针对转动部件之间的导电，特别是针对电力传输或电动汽车等电气化应用中要求有大量润滑油通过的深沟球轴承的转动部件之间的导电。本发明的技术方案还可以适用于其他结构的导电环中，而不限于实施例中示出的具体导电环的特定部件。在这种情况下，所述导电环的结构可以进行各种改变，所述挤压臂6的数量、形状以及布置方式可以进行各种改变，而不限于实施例所描述以及附图中示出的类型。此外，可以理解地，在其他一些实施例中，也可以设置不同形状、数量的唇部，对此不再赘述。
虽然在上述说明中示例性地描述了可能的实施例，但是应当理解到，仍然通过所有已知的和此外技术人员容易想到的技术特征和实施方式的组合存在大量实施例的变化。此外还应该理解到，示例性的实施方式仅仅作为例子，这种实施例不以任何形式限制本发明的保护范围、应用和构造。通过前述说明更多地是向技术人员提供一种用于转化至少一个示例性实施方式的技术指导，其中，只要不脱离权利要求书的保护范围，便可以进行各种改变，尤其是关于所述部件的功能和结构方面的改变。
附图标记表
1.外圈；11.凹槽；
2.内圈；21.凹槽；211.侧壁；212.底部；
3.骨架；31.齿部；
4.弹性导电体；41.非接触唇部；41a.主非接触唇部；41b.副非接触唇部；42.接触唇部；43.副唇部；
5.过油槽；
6.挤压臂
S1.第一侧；
S2.第二侧；
θ.唇部与径向方向之间的夹角。

Claims (10)

  1. 一种导电环，包括环形的骨架(3)和环形的弹性导电体(4)，其中，所述弹性导电体(4)固定设置在所述骨架(3)的径向内侧；
    所述弹性导电体(4)包括环形的基部和唇部，所述弹性导电体(4)的基部固定在所述骨架(3)上，所述唇部朝从所述基部朝向径向内侧延伸，所述唇部朝向径向内侧延伸的端部超出所述骨架(3)径向内侧的端部，
    其特征在于，
    所述唇部的轴向方向的一侧设置有挤压臂(6)。
  2. 根据权利要求1所述的导电环，其特征在于，所述挤压臂(6)具有多个，沿周向方向均匀分布在唇部的轴向方向的一侧。
  3. 根据权利要求1所述的导电环，其特征在于，所述挤压臂(6)呈薄片状，薄片状的挤压臂(6)被设置为其所处的平面过环形的弹性导电体(4)的中心轴线。
  4. 根据权利要求3所述的导电环，其特征在于，所述挤压臂(6)的径向内侧的边缘与唇部的径向内侧的边缘平齐。
  5. 根据权利要求1所述的导电环，其特征在于，所述骨架(3)的径向外侧边缘具有多个沿周向均匀分布的开口，所述开口形成过油槽(5)，每两个开口之间的骨架(3)的部分形成齿部(31)。
  6. 根据权利要求1所述的导电环，其特征在于，所述唇部包括至少一个非接触唇部(41)和至少一个接触唇部(42)。
  7. 根据权利要求6所述的导电环，其特征在于，所述挤压臂(6)设置 在所述接触唇部(42)的轴向方向上远离非接触唇部(41)的一侧。
  8. 根据权利要求6所述的导电环，其特征在于，所述非接触唇部(41)包括朝向径向内侧方向延伸的主非接触唇部(41a)和朝向轴向方向延伸的副非接触唇部(41b)。
  9. 根据权利要求6所述的导电环，其特征在于，所述接触唇部(42)包括导电聚四氟乙烯(PTFE)材料层，所述PTFE材料层与所述接触唇部(42)一体成型。
  10. 根据权利要求1所述的导电环，其特征在于，所述弹性导电体(4)由导电橡胶制成。
PCT/CN2022/083326 2022-03-28 2022-03-28 导电环 WO2023184075A1 (zh)

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* Cited by examiner, † Cited by third party
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JP2002228008A (ja) * 2001-02-01 2002-08-14 Koyo Seiko Co Ltd シールリング
CN204458854U (zh) * 2015-02-09 2015-07-08 温州人本轴承有限公司 一种密封圈及轴承密封结构
JP2018080756A (ja) * 2016-11-16 2018-05-24 日本精工株式会社 シール付き転がり軸受
CN110454505A (zh) * 2019-07-15 2019-11-15 舍弗勒技术股份两合公司 密封装置和轴承组件
CN111765172A (zh) * 2020-07-28 2020-10-13 无锡华洋滚动轴承有限公司 一种高速外圈旋转球轴承的密封装置
CN114165524A (zh) * 2021-12-06 2022-03-11 舍弗勒技术股份两合公司 导电环

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002228008A (ja) * 2001-02-01 2002-08-14 Koyo Seiko Co Ltd シールリング
CN204458854U (zh) * 2015-02-09 2015-07-08 温州人本轴承有限公司 一种密封圈及轴承密封结构
JP2018080756A (ja) * 2016-11-16 2018-05-24 日本精工株式会社 シール付き転がり軸受
CN110454505A (zh) * 2019-07-15 2019-11-15 舍弗勒技术股份两合公司 密封装置和轴承组件
CN111765172A (zh) * 2020-07-28 2020-10-13 无锡华洋滚动轴承有限公司 一种高速外圈旋转球轴承的密封装置
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