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2. 发明申请

US20070081751A1 Wheel bearing apparatus 有权
标题翻译：车轮轴承装置
公开(公告)号：US20070081751A1
公开(公告)日：2007-04-12
申请号：US11542560
申请日：2006-10-03
申请人： Takayuki Norimatsu , Kenrou Adachi , Isao Hirai
发明人： Takayuki Norimatsu , Kenrou Adachi , Isao Hirai
IPC分类号： F16C13/00 , F16C33/76
CPC分类号： F16C33/7883 , F16C19/186 , F16C2240/12 , F16C2326/02
摘要： A wheel bearing apparatus has an outer member formed with double row outer raceway surfaces on its inner circumferential surface. An inner member includes a wheel hub integrally formed with a wheel mounting flange at one end and a cylindrical portion axially extending from the wheel mounting flange. At least one inner ring is fit onto the cylindrical portion of the wheel hub. The inner ring is formed with a double row inner raceway surfaces on its outer circumferential surface. The double row inner raceway surfaces are arranged opposite to the double row outer raceway surfaces. Double row rolling elements are rollably arranged between the outer and inner raceway surfaces, via cages. Seals are mounted in openings or annular spaces formed between the outer member and the inner member. At least an inner-side seal of the seals has a slinger and an annular sealing plate. Each has a substantially “L” shaped cross-section arranged opposite to one another. The sealing plate has a metal core, press fit into the outer member, and a sealing member, integrally vulcanized adhered to the metal core. The sealing member has first and second side lips, formed with an inclination extending radially outward, and a cylindrical inner end portion, surrounding the inner circumferential edge and a portion of the back surface of the metal core. Each tip of the first and second side lips is in sliding contact with the slinger, with a predetermined interference. The cylindrical inner end portion is arranged opposite to the slinger with a slight radial gap therebetween to form a labyrinth seal.
摘要翻译：车轮轴承装置具有在其内周面上形成有双列外滚道表面的外部构件。内部构件包括一体地形成有一端的轮安装凸缘的轮毂和从车轮安装凸缘轴向延伸的圆柱形部分。至少一个内圈装配在轮毂的圆柱形部分上。内圈在其外圆周表面上形成有双列内滚道表面。双列内滚道表面布置成与双列外滚道表面相对。双列滚动元件通过保持架可滚动地布置在外滚道表面和内滚道表面之间。密封件安装在外部构件和内部构件之间形成的开口或环形空间中。至少密封件的内侧密封件具有抛油环和环形密封板。每个具有彼此相对布置的大致“L”形横截面。密封板具有金属芯，压配合到外部构件中，以及密封构件，其一体地硫化粘附到金属芯。密封构件具有形成有径向向外延伸的倾斜的第一和第二侧唇，以及围绕金属芯的内圆周边缘和后表面的一部分的圆柱形内端部。第一和第二侧唇的每个尖端以预定的干涉与抛油环滑动接触。圆柱形内端部与抛油环相对设置，在其间具有微小的径向间隙，以形成迷宫式密封。

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