公开(公告)号：US20140239760A1

公开(公告)日：2014-08-28

申请号：US14193282

申请日：2014-02-28

Applicant: MINEBEA CO., LTD.

Inventor： Yusuke ASAI ,  Motoharu AKIYAMA ,  Haruka MIYAJI

IPC: H02K7/116

CPC classification number: H02K7/116 ,  F16C33/6633 ,  F16C2361/61 ,  F16H57/0464 ,  F16H57/0495 ,  H02K37/00

Abstract: An actuator includes a stepping motor; a multi-stage gear device including a first stage gear attached to a rotation shaft of the motor, wherein a gear of each stage engages with a gear of a next stage; and a base member on which the multi-stage gear device and the stepping motor are mounted, wherein in the multi-stage gear device, a grease composition for resin is applied to a bearing part of the gear, and to an engaging part between the gears, and the grease composition for resin includes: (a) a base oil including a poly-alpha-olefin oil with a kinematic viscosity at 100° C. of 4 to 6 mm2/s; (b) a thickening agent which is lithium soap; (c) a viscosity increasing agent; (d) a solid lubricant; and (e) an anti-wear agent, and wherein the NLGI consistency number of the composition is 00, 0, 1, or 2.

Abstract translation: 致动器包括步进马达; 多级齿轮装置，包括附接到电动机的旋转轴的第一级齿轮，其中每级的齿轮与下一级的齿轮接合; 以及安装有多级齿轮装置和步进电动机的基座部件，其中，在多级齿轮装置中，将用于树脂的润滑脂组合物施加到齿轮的轴承部分上， 齿轮和用于树脂的润滑脂组合物包括：（a）包含在100℃下的运动粘度为4至6mm 2 / s的聚α-烯烃油的基础油; （b）作为锂皂的增稠剂; （c）增粘剂; （d）固体润滑剂; 和（e）抗磨剂，其中所述组合物的NLGI稠度数为00,0,1或2。

公开(公告)号：US20140169713A1

公开(公告)日：2014-06-19

申请号：US14185251

申请日：2014-02-20

Applicant: MINEBEA CO., LTD.

Inventor： Tadahiko KARAKI ,  Kentaro ISHIKAWA ,  Motoharu AKIYAMA ,  Kunihiro MATSUMOTO

IPC: F16C33/04 ,  F16C43/02 ,  F16C17/02

CPC classification number: F16C33/043 ,  F16C11/0614 ,  F16C17/02 ,  F16C23/043 ,  F16C33/201 ,  F16C33/208 ,  F16C43/02 ,  F16C2208/02 ,  F16C2208/36 ,  F16C2220/06 ,  F16C2326/43

Abstract: A sliding bearing having a metallic outer ring and a self-lubricating liner formed on the inner circumferential surface of the outer ring. The self-lubricating liner has a self-lubricating resin composition consisting of a mixture of 60 to 80% by weight of polyetherketone-based resin, 10 to 30% by weight of polytetrafluoroethylene, 5 to 15% by weight of carbon fiber, and not more than 15% by weight of aramid fiber, a total amount of the carbon fiber and the aramid fiber being 10 to 25% by weight. The inner circumferential surface of the outer ring has a surface roughness in terms of center line average roughness not less than Ra 4.0 μm and a surface roughness in terms of maximum height not less than Rmax 30.0 μm; and the outer ring and the self-lubricating liner are unified. A method of producing the bearing is also provided.

Abstract translation: 一种滑动轴承，其具有形成在外圈的内周面上的金属外圈和自润滑衬套。 自润滑衬里具有自润滑树脂组合物，其由60至80重量％的聚醚酮基树脂，10至30重量％的聚四氟乙烯，5至15重量％的碳纤维的混合物组成，而不是 大于15重量％的芳族聚酰胺纤维，碳纤维和芳族聚酰胺纤维的总量为10〜25重量％。 外圈的内周面的中心线平均粗糙度不小于Ra4.0μm的表面粗糙度和最大高度的表面粗糙度不小于Rmax30.0μm; 外圈和自润滑衬套是统一的。 还提供了一种制造轴承的方法。