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1. 发明授权

US11440226B2 Compression vulcanization molding mold for rolling bearing seal, and method for manufacturing rolling bearing seal 有权
公开(公告)号：US11440226B2
公开(公告)日：2022-09-13
申请号：US16479140
申请日：2017-10-17
申请人： NTN CORPORATION , NAKANISHI METAL WORKS CO., LTD.
发明人： Katsuaki Sasaki , Takahiro Wakuda , Takashi Kaneike
IPC分类号： B29C43/18 , F16C33/78 , B29C43/36 , F16J15/3204 , B29C33/12 , B29C33/42 , B29C45/38 , B29C43/38 , B29K105/24 , B29K705/00 , B29L31/26 , F16C19/06
摘要： The rolling bearing seal includes a core metal and rubber adhered to the core metal by vulcanization. The rubber includes: a seal lip portion having, over the entire circumference in the circumferential direction, a plurality of projections that extend inward in the radial direction from the inner diameter side of the core metal, and slides on a seal sliding surface of an inner ring of a rolling bearing; and an attachment portion that is attached to an outer ring of the rolling bearing. A compression vulcanization molding mold includes a female mold and a male mold. The female mold has a guide portion for positioning the core metal and a rugged shape forming the projections on the seal lip portion. The male mold has an inner-diameter-side burr groove and an outer-diameter-side burr groove and the shape of a radially outermost portion of the inner-diameter-side burr groove is formed in a circle.

2. 发明授权

US09217472B2 Seal equipped bearing assembly 有权
标题翻译：密封装配轴承总成
公开(公告)号：US09217472B2
公开(公告)日：2015-12-22
申请号：US14495447
申请日：2014-09-24
申请人： NTN CORPORATION
发明人： Katsuaki Sasaki , Takahiro Wakuda
IPC分类号： F16C33/76 , F16C33/78 , F16C19/06 , F16C33/58 , F16C33/72
CPC分类号： F16C33/7826 , F16C19/06 , F16C33/586 , F16C33/726 , F16C33/7843
摘要： A seal equipped bearing assembly includes a plurality of rolling elements interposed between opposite raceway surfaces defined in respective raceway rings; a sealing member to seal a bearing space delimited between the raceway rings; and a gap formation facilitating element defined in a seal contact face in the other of the raceway rings, the gap formation facilitating element being a projection provided in a circumferential portion of the seal contact face in the raceway ring. The gap formation facilitating element is configured to render the sealing member to be a non-contact seal or to contact so that the contact pressure is approximately zero when the bearing assembly is in a rotating state. The sealing member is provided with a suction preventing device for preventing the sealing member from being sucked onto the other of the raceway rings.
摘要翻译：一种装有密封件的轴承组件包括多个滚动元件，其插入在限定在相应的滚道环中的相对的滚道表面之间; 用于密封限定在所述滚道环之间的轴承空间的密封构件; 以及间隙形成促进元件，限定在另一个滚道环中的密封接触面中，间隙形成促进元件是设置在滚道环中的密封接触面的周向部分中的突起。间隙形成促进元件构造成使得密封构件为非接触密封或接触，使得当轴承组件处于旋转状态时接触压力近似为零。密封构件设置有用于防止密封构件被吸入另一个滚道环的防吸漏装置。

3. 发明授权

US10190637B2 Sealed bearing assembly 有权
公开(公告)号：US10190637B2
公开(公告)日：2019-01-29
申请号：US15556165
申请日：2016-03-08
申请人： NTN CORPORATION
发明人： Kazunori Inamasu , Yugo Yoshimura , Takahiro Wakuda , Katsuaki Sasaki
IPC分类号： F16C33/78 , F16C19/06 , F16J15/34 , F16C33/72
摘要： A sealed bearing assembly includes seal members each including a seal lip with multiple protrusions, and being arranged such that oil passages are defined between the seal lip and a seal sliding surface which is configured to slide circumferentially relative to the protrusions such that the oil passages communicate with a bearing internal space and an exterior of the bearing, and prevent passage of foreign objects having particle diameters larger than a predetermined value therethrough. The seal lip and the seal sliding surface are arranged such that, when the bearing rotates, lubricating oil in the oil passages is pulled into spaces between the seal lip and the seal sliding surface such that a fluid lubricating condition is created between the seal lip and the seal sliding surface, due to a wedge effect.

4. 发明申请

US20150049972A1 ROLLING BEARING 审中-公开
标题翻译：滚动轴承
公开(公告)号：US20150049972A1
公开(公告)日：2015-02-19
申请号：US14371894
申请日：2013-01-09
申请人： NTN CORPORATION
发明人： Katsuaki Sasaki , Kyouhei Kageyama
IPC分类号： F16C33/78 , F16C19/06
CPC分类号： F16C33/7823 , F16C19/06 , F16C33/783 , F16C33/7846 , F16C33/7856 , F16C2361/65
摘要： A seal lip portion 9 includes a lip main body (9a) and a projecting section (16) protruding from a peripheral edge of the lip main body (9a) and slidingly engageable with an inner ring (1), and this projecting section (16) is made of a highly frictionally wearable material which allows the projecting section (16), when frictionally worn, to establish a non-contact or a light contact to such an extend as to result in a contact pressure that can be regarded as zero. A fitting section (13) fitted into a seal mounting groove (2b) in a seal member main body (8) is held in a drag-rotation preventive structure that prevents circumferential movement due to a drag-rotation relative to an outer ring (2).
摘要翻译：密封唇部9包括唇部主体（9a）和从唇部主体（9a）的周缘突出并与内圈（1）滑动接合的突出部分（16），并且该突出部分）由高度摩擦的可穿戴材料制成，其允许突出部分（16）在摩擦磨损时建立与这种延伸的非接触或轻微接触，从而导致可被认为是零的接触压力。装配在密封构件主体（8）中的密封安装槽（2b）中的装配部分（13）被保持在防止旋转的结构中，该结构防止由于相对于外圈（2）的拖曳旋转而引起的周向运动）。

5. 发明申请

US20140133792A1 ROLLING BEARING 有权
标题翻译：滚动轴承
公开(公告)号：US20140133792A1
公开(公告)日：2014-05-15
申请号：US14128870
申请日：2012-06-21
申请人： NTN CORPORATION
发明人： Katsuaki Sasaki , Yoshiaki Ryouno , Shuguang Lian
IPC分类号： F16C33/78
CPC分类号： F16C33/7856 , F16C19/06 , F16C33/7823 , F16C33/7833 , F16C2220/04 , F16C2231/00 , F16C2326/01 , F16C2361/61
摘要： A rolling contact bearing assembly includes a seal member having a seal lip segment. The seal lip segment includes a waist portion having, as viewed in a cross section, a bent V-shape such that a surface of the seal lip segment on outer side defines a relief recess and also includes a protrusion portion distal to the waist portion and having a tapered shape narrowing towards a free end thereof. The seal member installed in the bearing assembly applies urging force on one of inner and outer raceway rings, against change in degree of interference of the protrusion portion with the raceway ring. The protrusion portion includes such high wear material that rotation of the bearing assembly results in wear of the protrusion portion to cause the protrusion portion to make non-contact status or light contact status of a contact pressure of substantially zero.
摘要翻译：滚动接触轴承组件包括具有密封唇段的密封构件。密封唇部分包括一个腰部，其在横截面中观察到弯曲的V形，使得外侧上的密封唇部分的表面限定了一个释放凹槽，并且还包括一个远离腰部的突起部分，具有朝向其自由端变窄的锥形形状。安装在轴承组件中的密封件对于内滚道环和外滚道环之一施加作用力，以防止突出部与滚道环的干涉程度的变化。突出部分包括这样的高磨损材料，使得轴承组件的旋转导致突出部分的磨损，使得突出部分使接触压力基本上为零的非接触状态或轻微接触状态。

6. 发明授权

US10570962B2 Sealed bearing 有权
公开(公告)号：US10570962B2
公开(公告)日：2020-02-25
申请号：US16330854
申请日：2017-09-05
申请人： NTN CORPORATION
发明人： Katsuaki Sasaki , Tomohiro Sugai , Takahiro Wakuda
IPC分类号： F16C33/76 , F16C33/78
摘要： A sealed bearing includes an inner race; and seal members each including a seal lip made of rubber. Each seal lip includes a plurality of protrusions circumferentially spaced apart from each other, and kept in sliding contact with the inner race with fluid lubrication condition generated between the protrusions and the inner race. Each protrusion has a circular arc-shaped cross section along the circumferential direction, and the circular arc-shaped cross section has a radius of 0.4 mm or more and less than 9.0 mm.

7. 发明授权

US09366292B2 Retainer for ball bearing, and ball bearing 有权
公开(公告)号：US09366292B2
公开(公告)日：2016-06-14
申请号：US14701718
申请日：2015-05-01
申请人： NTN CORPORATION
发明人： Shohei Fukama , Yasuyuki Katayama , Takahiro Okada , Katsuaki Sasaki
IPC分类号： F16C33/38
CPC分类号： F16C33/3862 , F16C19/06 , F16C33/3806 , F16C33/3875 , F16C33/3887 , F16C33/6651 , F16C33/7823 , F16C33/7893 , F16C2208/36 , F16C2208/52 , F16C2208/60 , F16C2226/74 , F16C2326/01 , F16C2361/61
摘要： A retainer for a ball bearing includes two annular members that face each other in an axial direction thereof. The two annular members include opposed surfaces each having hemispherical pockets that are formed at positions in a circumferential direction of each of the two annular members and configured to receive balls. The opposed surfaces are snap-fitted to each other to couple together the two annular members. The hemispherical pockets each have an inner peripheral surface provided with ball contact and ball non-contact surfaces. The ball contact surface is formed at a central portion in a pocket circumferential direction and at least at a central portion in a pocket axial direction of the inner peripheral surface. The ball non-contact surface includes a recess recessed to an opposite side to a corresponding ball across the ball contact surface and is opened in at least one of pocket axial ends.

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