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CN104379952B - 具有紧凑的静态外径密封件的密封轴承 - Google Patents

具有紧凑的静态外径密封件的密封轴承 Download PDF

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Publication number
CN104379952B
CN104379952B CN201380015048.3A CN201380015048A CN104379952B CN 104379952 B CN104379952 B CN 104379952B CN 201380015048 A CN201380015048 A CN 201380015048A CN 104379952 B CN104379952 B CN 104379952B
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seal
cup lid
bearing cup
bearing
flange
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CN104379952A (zh
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约翰·塔特
斯蒂芬·卡尔
克雷格·戈达德
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Schaeffler Technologies AG and Co KG
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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
    • F16C33/72—Sealings
    • F16C33/76—Sealings of ball or roller bearings
    • F16C33/768—Sealings of ball or roller bearings between relatively stationary parts, i.e. static seals
    • 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
    • F16C33/58—Raceways; Race rings
    • F16C33/60—Raceways; Race rings divided or split, e.g. comprising two juxtaposed rings
    • F16C33/605—Raceways; Race rings divided or split, e.g. comprising two juxtaposed rings with a separate retaining member, e.g. flange, shoulder, guide ring, secured to a race ring, adjacent to the race surface, so as to abut the end of the rolling elements, e.g. rollers, or the cage
    • 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
    • F16C33/7803—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members suited for particular types of rolling bearings
    • F16C33/7809—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members suited for particular types of rolling bearings for needle 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
    • F16C33/7816—Details of the sealing or parts thereof, e.g. geometry, material
    • F16C33/783—Details of the sealing or parts thereof, e.g. geometry, material of the mounting region
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
    • F16D3/16—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts
    • F16D3/26—Hooke's joints or other joints with an equivalent intermediate member to which each coupling part is pivotally or slidably connected
    • F16D3/38—Hooke's joints or other joints with an equivalent intermediate member to which each coupling part is pivotally or slidably connected with a single intermediate member with trunnions or bearings arranged on two axes perpendicular to one another
    • F16D3/382—Hooke's joints or other joints with an equivalent intermediate member to which each coupling part is pivotally or slidably connected with a single intermediate member with trunnions or bearings arranged on two axes perpendicular to one another constructional details of other than the intermediate member
    • F16D3/385—Bearing cup; Bearing construction; Bearing seal; Mounting of bearing on the intermediate member
    • 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
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/16—Sealings between relatively-moving surfaces
    • F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
    • F16J15/3268—Mounting of sealing rings
    • F16J15/3276—Mounting of sealing rings with additional static sealing between the sealing, or its casing or support, and the surface on which it is mounted
    • 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
    • F16C21/00—Combinations of sliding-contact bearings with ball or roller bearings, for exclusively rotary movement
    • F16C21/005—Combinations of sliding-contact bearings with ball or roller bearings, for exclusively rotary movement the external zone of a bearing with rolling members, e.g. needles, being cup-shaped, with or without a separate thrust-bearing disc or ring, e.g. for universal joints
    • 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
    • F16C2361/00—Apparatus or articles in engineering in general
    • F16C2361/41—Couplings
    • 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
    • F16C33/7869—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted with a cylindrical portion to the inner surface of the outer race and having a radial portion extending inward
    • F16C33/7873—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted with a cylindrical portion to the inner surface of the outer race and having a radial portion extending inward with a single sealing ring of generally L-shaped cross-section
    • F16C33/7876—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted with a cylindrical portion to the inner surface of the outer race and having a radial portion extending inward with a single sealing ring of generally L-shaped cross-section with sealing lips
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
    • F16D3/16—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts
    • F16D3/26—Hooke's joints or other joints with an equivalent intermediate member to which each coupling part is pivotally or slidably connected
    • F16D3/38—Hooke's joints or other joints with an equivalent intermediate member to which each coupling part is pivotally or slidably connected with a single intermediate member with trunnions or bearings arranged on two axes perpendicular to one another
    • F16D3/40—Hooke's joints or other joints with an equivalent intermediate member to which each coupling part is pivotally or slidably connected with a single intermediate member with trunnions or bearings arranged on two axes perpendicular to one another with intermediate member provided with two pairs of outwardly-directed trunnions on intersecting axes
    • F16D3/41—Hooke's joints or other joints with an equivalent intermediate member to which each coupling part is pivotally or slidably connected with a single intermediate member with trunnions or bearings arranged on two axes perpendicular to one another with intermediate member provided with two pairs of outwardly-directed trunnions on intersecting axes with ball or roller bearings

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sealing With Elastic Sealing Lips (AREA)
  • Sealing Of Bearings (AREA)
  • Rolling Contact Bearings (AREA)

Abstract

一种密封件，包括芯部和密封本体，该芯部具有带端面的径向向外延伸的凸缘，该密封本体具有密封唇缘和径向向外延伸越过凸缘并且包围凸缘的端面的包覆成型部。还公开了一种轴承装置，该轴承装置包括具有带锥形内表面的沉孔的轴承杯盖和能够与轴承杯盖接触的密封件。密封件具有芯部和密封本体，该芯部具有带端面的径向向外延伸的凸缘，该密封本体具有密封唇缘和径向向外延伸越过凸缘并且包围凸缘的端面的包覆成型部。密封件能够与轴承杯盖压配合，使得包覆成型部与轴承杯盖的锥形内表面紧密接触并且形成静态密封。

Description

具有紧凑的静态外径密封件的密封轴承
相关申请的交叉引用
本申请要求于2012年3月20日提交的US 61/613,152的优先权，该申请的全部内容通过参引合并到本文中。
技术领域
本发明总体上涉及一种轴承，并且更具体地，涉及一种具有密封件的轴承，该密封件带有径向向外延伸的包覆成型橡胶部。
背景技术
在例如汽车和轻型卡车的U形接头/传动轴、转向轴或者万向接头应用中使用的包含密封件的轴承是已知的。
已知的意在用于小的截面中的静态密封件可以例如包含轴向密封，该轴向密封意在阻止碎屑和/或液体进入。然而，在已知的密封件中，轴向唇缘的密封和阻止碎屑和/或液体进入的能力取决于与轴承的杯状凸缘的适当的过盈。不适当的过盈可导致几何形状改变或不适当的密封/无密封或围绕外周部分的不适当的密封/无密封。
例如，在美国专利No.7,942,584中示出了密封件的一个示例。由该专利教示的密封件是具有在整个周面上延伸的包覆成型部的压配合密封件。
例如，在美国专利No.5,597,356中示出了密封件的另一示例。由该专利教示的密封件是不具有用于压配合过盈的附加密封的万向接头密封件。
例如，在美国专利No.3,200,615中示出了密封件的另一示例。由该专利教示的密封件具有用于与压配合孔密封的附加径向凸部。
发明内容
本发明涉及一种包括轴承杯盖和密封件的轴承组件。密封件具有包覆成型部，该包覆成型部径向向外延伸以在密封件与轴承杯盖的压配合期间产生与轴承杯盖的静态连接。轴承杯盖和密封件两者都具有大致相似的锥度，使得当密封件压入轴承中时，密封件的锥形的包覆成型部随着密封件的座置而压缩并且产生增大的过盈。这类似于“压塞”作用。因此，本发明通过在不需要使用粘合剂或二次操作的情况下使用已知的制造技术提供有效的静态密封。
通过包覆成型部在密封件与轴承杯盖之间产生的静态密封阻止碎屑/液体进入压配合区域中并且不允许碎屑/液体“芯吸”经过密封件的压配合区域。此外，密封件不依赖于折边作用。该设计允许最小的封装尺寸变化和现有技术的封装不可能实现的配合小截面的能力。
概括地，本发明涉及一种密封件，该密封件包括芯部和密封本体，该芯部具有带第一端面的径向向外延伸的第一凸缘，该密封本体具有至少一个密封唇缘和径向向外延伸越过第一凸缘并且包围第一凸缘的第一端面的包覆成型部。包覆成型部可以具有渐缩的或呈锥形的径向外表面。而且，芯部可由冲压板状金属制成，并且可以具有带第二端面的径向向内延伸的第二凸缘。此外，密封本体可以具有三个密封唇缘，并且由诸如橡胶之类的弹性体材料制成。
此外，本发明涉及一种轴承装置，该轴承装置包括轴承杯盖和密封件，该轴承杯盖具有带锥形内表面的沉孔，该密封件能够与轴承杯盖接触并且包括芯部和密封本体，该芯部具有带第一端面的径向向外延伸的第一凸缘，该密封本体具有至少一个密封唇缘和径向向外延伸越过第一凸缘并且包围第一端面的包覆成型部。密封件能够与轴承杯盖压配合，使得密封本体的包覆成型部与轴承杯盖的锥形内表面彼此紧密接触并且形成静态密封。
轴承杯盖的锥形内表面能够轴向向外地沿径向渐缩，并且包覆成型部 可具有锥形的径向外表面，该表面是渐缩的并且具有与轴承杯盖的锥形内表面的斜度大致相似的斜度，用于与轴承杯盖的锥形内表面的密封接合。
轴承杯盖可以是拉伸的无凸缘轴承杯盖。
附图说明
将在以下结合附图进行的对本发明的详细描述中更充分地描述本发明，在附图中：
附图1是本发明的拉伸的杯盖和密封件的截面图。
具体实施方式
首先，应当注意的是：在不同视图中出现的相同的附图标记表示相同的或功能相似的结构元件。此外，应当理解的是：本发明并不仅仅局限于本文中描述的具体实施方式、方法、材料和改型，并且因此本发明可以变化。还应当理解的是：本文中使用的术语仅用于描述特定方面的目的，而并非意在限制本发明的范围。
除非另有限定，否则在本文中使用的所有技术和科学术语都具有与如本领域普通技术人员所通常理解的含义相同的含义。尽管在本发明的实践或测试中可使用类似于或等同于本文中描述的那些方法、装置或材料的任何方法、装置或材料，但是现在描述以下示例性方法、装置和材料。
附图示出了轴承组件10的截面图。轴承组件10包括轴承杯盖12和密封件14，该密封件14能够与轴承盖压配合。
轴承杯盖12具有带内表面18的沉孔16，该内表面18具有远离密封件14的轴向向外地在径向上呈锥形或渐缩的斜度。轴承杯盖12示出为拉伸的无凸缘轴承杯盖。
密封件14具有芯部20和密封本体25，其中该芯部20具有径向向外延伸的第一凸缘22和径向向内延伸的第二凸缘24，该密封本体25 具有第一密封唇缘26、第二密封唇缘28、第三密封唇缘30和包覆成型部32。第一凸缘22具有第一端面23，并且第二凸缘24具有第二端面27。第二凸缘24保持滚子轴承29。包覆成型部32径向向外延伸并且超过芯部20的第一凸缘22，并且包围芯部20的第一端面23。包覆成型部32具有带斜度的渐缩的或呈锥形的径向外表面34，该斜度与轴承杯盖12的内表面18的斜度大致相似。在与轴承杯盖12的压配合中，包覆成型部32与轴承杯盖12的内表面18接合，以提供静态密封区域36。
轴承杯盖12的内表面18的轮廓和密封本体25的包覆成型部32的渐缩的或锥形表面34在无需使用粘合剂或进行二次操作的情况下产生增大的过盈和静态密封。通过包覆成型部32在密封件14与轴承杯盖12之间产生的静态密封区域36阻止碎屑/液体进入压配合区域38并且不允许碎屑/液体“芯吸”经过密封件14的压配合区域38。压配合区域38限制轴承杯盖12与芯部20之间的轴向运动以保持密封件14与轴承杯盖12紧密接合。此外，密封件14不依赖于折边作用，该设计允许最小的封装尺寸变化和现有技术的封装不可能实现的配合小截面的能力。
芯部20由冲压板状金属制成，并且密封件的其余部分由诸如橡胶之类的弹性体材料制成。
当然，在不偏离所要求保护的本发明的精神或范围的情况下，本发明的上述示例的改变和改型对于本领域普通技术人员而言应当是显而易见的。尽管参照具体的优选和/或示例性实施方式描述了本发明，但是显而易见的是：在不偏离所要求保护的本发明的范围和精神的情况下，本发明可以进行改变。
附图标记
10 轴承组件
12 轴承杯盖
14 密封件
16 沉孔
18 内表面
20 芯部
22 第一凸缘
23 第一端面
24 第二凸缘
25 密封本体
26 第一密封唇缘
27 第二端面
28 第二密封唇缘
29 滚子轴承
30 第三密封唇缘
32 包覆成型部
34 锥形表面
36 静态密封区域
38 压配合区域

Claims (14)

1.一种密封件，所述密封件与轴承杯盖压配合，所述轴承杯盖具有带锥形内表面的沉孔，所述密封件包括：
芯部，所述芯部具有带第一端面的径向向外延伸的第一凸缘；以及
密封本体，所述密封本体具有至少一个密封唇缘和包覆成型部，所述包覆成型部径向向外延伸越过所述第一凸缘并且包围所述第一凸缘的所述第一端面，
其中，所述包覆成型部具有渐缩的或呈锥形的径向外表面，所述径向外表面与所述轴承杯盖的所述锥形内表面紧密接触。
2.根据权利要求1所述的密封件，其中，所述芯部具有带第二端面的径向向内延伸的第二凸缘。
3.根据权利要求1所述的密封件，其中，所述密封本体具有三个密封唇缘。
4.根据权利要求1所述的密封件，其中，所述密封本体由弹性体材料制成。
5.根据权利要求4所述的密封件，其中，所述密封本体由橡胶制成。
6.根据权利要求1所述的密封件，其中，所述芯部由冲压板状金属制成。
7.一种轴承装置，包括：
轴承杯盖，所述轴承杯盖具有带锥形内表面的沉孔；以及
密封件，所述密封件能够与所述轴承杯盖接触，所述密封件具有芯部和密封本体，所述芯部具有径向向外延伸的第一凸缘，所述第一凸缘具有第一端面，所述密封本体具有至少一个密封唇缘和包覆成型部，所述包覆成型部径向向外延伸越过所述第一凸缘并且包围所述第一端面，
其中，所述包覆成型部具有锥形的径向外表面以用于与所述轴承杯盖的所述锥形内表面密封接合，
其中，所述密封件与所述轴承杯盖压配合，使得所述密封本体的所述包覆成型部与所述轴承杯盖的所述锥形内表面彼此紧密接触并且形成静态密封。
8.根据权利要求7所述的轴承装置，其中，所述芯部具有带第二端面的径向向内延伸的第二凸缘。
9.根据权利要求7所述的轴承装置，其中，所述轴承杯盖的所述锥形内表面轴向向外地沿径向渐缩。
10.根据权利要求7所述的轴承装置，其中，所述包覆成型部的锥形的径向外表面以与所述轴承杯盖的所述锥形内表面的斜度大致相似的斜度渐缩。
11.根据权利要求7所述的轴承装置，其中，所述轴承杯盖是拉伸的无凸缘轴承杯盖。
12.根据权利要求7所述的轴承装置，其中，所述密封本体由弹性体材料制成。
13.根据权利要求12所述的轴承装置，其中，所述密封本体由橡胶制成。
14.根据权利要求7所述的轴承装置，其中，所述芯部由冲压板状金属制成。
CN201380015048.3A 2012-03-20 2013-03-13 具有紧凑的静态外径密封件的密封轴承 Expired - Fee Related CN104379952B (zh)

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