CN214499803U - 电蚀防止轴承 - Google Patents

电蚀防止轴承 Download PDF

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CN214499803U
CN214499803U CN202022627393.2U CN202022627393U CN214499803U CN 214499803 U CN214499803 U CN 214499803U CN 202022627393 U CN202022627393 U CN 202022627393U CN 214499803 U CN214499803 U CN 214499803U
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outer ring
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居岛启一
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30Parts of ball or roller bearings
    • F16C33/58Raceways; Race rings
    • F16C33/583Details of specific parts of races
    • F16C33/586Details of specific parts of races outside the space between the races, e.g. end faces or bore of inner ring
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30Parts of ball or roller bearings
    • F16C33/58Raceways; Race rings
    • F16C33/583Details of specific parts of races
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C19/00Bearings with rolling contact, for exclusively rotary movement
    • F16C19/02Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
    • F16C19/04Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly
    • F16C19/06Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly with a single row or balls
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C19/00Bearings with rolling contact, for exclusively rotary movement
    • F16C19/52Bearings with rolling contact, for exclusively rotary movement with devices affected by abnormal or undesired conditions
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C41/00Other accessories, e.g. devices integrated in the bearing not relating to the bearing function as such
    • F16C41/04Preventing damage to bearings during storage or transport thereof or when otherwise out of use
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2202/00Solid materials defined by their properties
    • F16C2202/30Electric properties; Magnetic properties
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2223/00Surface treatments; Hardening; Coating
    • F16C2223/30Coating surfaces
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2226/00Joining parts; Fastening; Assembling or mounting parts
    • F16C2226/50Positive connections
    • F16C2226/70Positive connections with complementary interlocking parts
    • F16C2226/76Positive connections with complementary interlocking parts with tongue and groove or key and slot
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2240/00Specified values or numerical ranges of parameters; Relations between them
    • F16C2240/40Linear dimensions, e.g. length, radius, thickness, gap
    • F16C2240/60Thickness, e.g. thickness of coatings
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2326/00Articles relating to transporting
    • F16C2326/01Parts of vehicles in general

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rolling Contact Bearings (AREA)
  • Mounting Of Bearings Or Others (AREA)

Abstract

本实用新型提供一种电蚀防止轴承。对于该电蚀防止轴承,其外周面的尺寸精度较高,不易产生由负荷引起的偏心,并且能够较好地防止电蚀。本实用新型的电蚀防止轴承(轴承(100))的结构的特征在于,在外圈(104)的外周面(104a)施加有绝缘涂层(110),该电蚀防止轴承包括覆盖外圈(104)的端面(104b)的圆环状的绝缘垫圈(120)。

Description

电蚀防止轴承
技术领域
本实用新型涉及一种电蚀防止轴承。
背景技术
近年,电动汽车(electric car)、混合动力汽车(hybrid car)等的开发也有进展,一台汽车所搭载的高电压部件的数量正在增加。当该高电压部件的电流向轴承通电时,会在轴承的滚动体的表面、外圈和内圈的轨道面产生电蚀,这成为损伤的一个原因。于是,本申请的发明人发明了专利文献1的电蚀防止滚珠轴承。
专利文献1的电蚀防止滚珠轴承在外圈内径面(滚珠的旁边的肩部分)或内圈外径面与端面之间的周缘设有截面呈台阶状的台阶状部或者呈凸半圆状或直线状的倒角部。并且以自外圈的外径面或内圈内径面至端面进而越过端面并延伸至台阶状部或倒角部的方式覆盖有电绝缘物。
现有技术文献
专利文献
专利文献1:日本实公平7-43488
实用新型内容
实用新型要解决的问题
然而,在像专利文献1这样利用电绝缘物覆盖至形成于外圈的内径面的倒角部的情况下,在采用嵌入成型时厚度的精度较低。因此,在利用嵌入成型形成了电绝缘物的覆盖之后,需要进行精加工,导致成本较高。另外,在利用嵌入成型形成了覆盖的情况下,覆盖变厚,因此在受到负荷时,存在覆盖变形而容易产生偏心的问题。绝缘涂层能够成形为薄膜,但若在外圈内径面涂布,则难以仅对肩部分涂布,绝缘涂层也会覆盖于轨道面,因此在内径面进行绝缘涂布较困难。
鉴于这样的问题,本实用新型的目的在于提供一种外周面的尺寸精度较高,不易产生由负荷引起的偏心,并且能够较好地防止电蚀的电蚀防止轴承。
用于解决问题的方案
为了解决上述问题,本实用新型的电蚀防止轴承的代表的结构的特征在于,在外圈的外周面施加有绝缘涂层,该电蚀防止轴承包括绝缘垫圈,该绝缘垫圈呈圆环状,且覆盖外圈的端面。
根据上述结构,绝缘涂层仅施加于外圈的外周面。换言之,未在外圈的内径面施加绝缘涂层。绝缘涂层与基于嵌入成型获得的覆盖相比较薄,因此外周面的尺寸精度较高,也能够防止由变形引起的偏心。另外,能够简化嵌入成型时的精加工,能够谋求成本的降低。另外,外圈的端面被圆环状的绝缘垫圈覆盖,从而尽管未在内径面进行绝缘涂布,也能够确保较高的绝缘性能。因此,能够较好地防止轴承的电蚀。
可以是,绝缘垫圈具有凸缘,凸缘从覆盖外圈的端面的面沿着外圈的内径面突出,绝缘垫圈嵌入于外圈,若构成为这样的结构,则能够可靠地使外圈的内径面绝缘。因此,能够提高上述的效果。另外,外圈与绝缘垫圈一体化,因此能够使安装时的操作变得容易。
可以是,在上述外圈的内径面形成周向的槽,在绝缘垫圈的凸缘形成与槽卡合的爪。由此,能够较好地防止绝缘垫圈的脱离(脱落)。
实用新型的效果
采用本实用新型,能够提供一种外周面的尺寸精度较高,不易产生由负荷引起的偏心,并且能够较好地防止电蚀的电蚀防止轴承。
附图说明
图1是说明实施方式的电蚀防止轴承的图。
图2是电蚀防止轴承的整体立体图。
图3(a)是说明轴承的变形例的图。
图3(b)是说明轴承的变形例的图。
图4是说明轴承的变形例的图。
附图标记说明
10、壳体;100、轴承;100a、轴承;100b、轴承;100c、轴承;102、内圈;102a、内径面;104、外圈;104a、外周面;104b、端面;104c、内径面;104d、槽;106、滚珠;108、保持器;110、绝缘涂层;120、120a~120c、绝缘垫圈;122、内径端;124、面;126、凸缘;126a、爪;128、面。
具体实施方式
以下,一边参照附图,一边详细地对本实用新型的优选的实施方式进行说明。该实施方式所示的尺寸、材料、其他具体的数值等只是用来使实用新型容易理解的例示,除特别说明的情况之外,并不用来限定本实用新型。另外,在本说明书和附图中,对实质上具有相同的功能、结构的要素标注相同的附图标记,从而省略重复说明,另外,对于与本实用新型没有直接关系的要素,省略图示或说明。
图1是说明本实施方式的电蚀防止轴承的图。图2是电蚀防止轴承的整体立体图。如图1所示,本实施方式的电蚀防止轴承(以下,称作轴承100)配置于壳体10的内部。如图1和图2所示,轴承100是在内圈102与外圈104之间包括保持器108和作为滚动体的一列滚珠106的单列的深沟球轴承。
如图1所示,在本实施方式的轴承100中,在外圈104的外周面104a施加有绝缘涂层110。由此,能够确保外圈104的外周面的绝缘性能。特别地,在本实施方式的轴承100中,对于外圈104,除了外周面104a之外在端面104b也施加有绝缘涂层。由此,在端面104b也能够确保绝缘性能。绝缘涂层能够以对热塑性树脂进行加热溶融并涂布的方式形成,或者对溶于溶剂的树脂进行涂布并使其干燥的方式形成。绝缘涂层的平均厚度是0.3mm左右,与基于嵌入成型获得的覆盖相比,尺寸精度能够得到提高。
然后,外圈104的端面104b被绝缘垫圈120覆盖。如图2所示,绝缘垫圈120为圆环状。另外,如图1所示,绝缘垫圈120的内径端122优选为位于比外圈104的内径面104c靠内径侧的位置。由此,能够得到较高的绝缘性能。
像上述结构这样,未覆盖内径面104c,而仅覆盖外圈104的外周面104a和端面104b,因此能够施加绝缘涂层110。由于未覆盖内径面104c,因此在涂布液状的涂层材料时,没有覆盖轨道面的风险。并且,绝缘涂层110与基于嵌入成型获得的覆盖相比较薄,因此轴承100的外周面的尺寸精度较高,也能够防止由变形而引起的偏心。另外,能够简化嵌入成型时的精加工。因此,能够降低轴承100的制造时的成本。
然后,通过利用圆环状的绝缘垫圈120覆盖外圈104的端面104b,尽管未在内径面104c进行绝缘涂布,也能够可靠地使内径面104c与壳体10之间绝缘。因此,能够确保较高的绝缘性能,较好地防止轴承100的电蚀。
图3(a)、图3(b)和图4是说明轴承的变形例的图。图1所示的轴承100的绝缘垫圈120仅覆盖了外圈104的端面104b。对此,图3(a)所示的轴承100a的绝缘垫圈120a具有从覆盖外圈104的端面104b的面124沿着外圈104的内径面104c突出的凸缘126。由此,成为绝缘垫圈120a嵌入于外圈104的状态,能够可靠地使外圈104的内径面104c绝缘。另外,外圈104与绝缘垫圈120a一体化,因此能够使安装时的操作变得容易。
在图3(b)所示的轴承100b中,在外圈104的内径面104c形成有周向的槽104d。槽104d是与带密封轴承的密封槽同样的结构。另一方面,在绝缘垫圈120b的凸缘126形成有与槽104d卡合的爪126a。由此,绝缘垫圈120b的爪126a与外圈104的内径面104c啮合,因此能够较好地防止绝缘垫圈120b从外圈104脱离(脱落)。
在图4所示的轴承100c的绝缘垫圈120c中,覆盖外圈104的端面104b的面128延伸至内圈102的内径面102a的附近。由此,利用面128封闭外圈104与内圈102之间的间隙,面128能够作为密封件发挥功能。而且,从面128的中途位置延伸有沿着外圈104的内径面104c突出的凸缘126,从而与图3(a)所示的轴承100a同样,外圈104与绝缘垫圈120c一体化,能够使安装时的操作变得容易。
以上,一边参照附图,一边对本实用新型的优选的实施例进行了说明,但本实用新型当然不限定于该例。只要是本领域技术人员,就能够在权利要求书所记载的范畴内想到各种变更例或修正例,这些当然也属于本实用新型的技术的范围。
产业上的可利用性
本实用新型能够用作电蚀防止轴承。

Claims (3)

1.一种电蚀防止轴承,其特征在于,
在外圈的外周面施加有绝缘涂层,
该电蚀防止轴承包括绝缘垫圈,该绝缘垫圈呈圆环状,且覆盖所述外圈的端面整体。
2.根据权利要求1所述的电蚀防止轴承,其特征在于,
所述绝缘垫圈具有凸缘,该凸缘从覆盖所述外圈的端面的面沿着该外圈的内径面突出,
所述绝缘垫圈嵌入于所述外圈。
3.根据权利要求1或2所述的电蚀防止轴承,其特征在于,
在所述外圈的内径面形成有周向的槽,
在所述绝缘垫圈的凸缘形成有与所述槽卡合的爪。
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JP2017129194A (ja) * 2016-01-20 2017-07-27 日本精工株式会社 シールド板付き転がり軸受

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