公开(公告)号：US06575632B2

公开(公告)日：2003-06-10

申请号：US09826008

申请日：2001-04-05

申请人： Takahiro Kawaguchi ,  Tadashi Hirokawa ,  Kentarou Nishimura ,  Osamu Maruyama ,  Shino Kimura

发明人： Takahiro Kawaguchi ,  Tadashi Hirokawa ,  Kentarou Nishimura ,  Osamu Maruyama ,  Shino Kimura

IPC分类号： F16C2906

CPC分类号： F16C29/065 ,  F16C33/51 ,  F16C2300/02 ,  F16H25/2233 ,  F16H25/2247 ,  F16H2025/2271 ,  Y10T74/19777

摘要： A roller retainer 11 encloses an outer periphery of the roller 9 situated on a diagonal 20 when the roller 9 is viewed from the side surface thereof. Whether the rollers 9 are arranged in a parallel manner or in a cross manner, the roller retainer 11 is able to keep a constant position and thus the disposition of the roller retainer 11 is free from the influence of the direction the roller 9. Also, since the roller retainer 11 restricts a corner portion 9a of the roller 9, the roller 9 is difficult to slip off the roller retainer 11 and thus the roller 9 can be restricted positively, thereby being able to control the skew of the roller 9.

摘要翻译： 当从其侧表面观察辊9时，辊保持器11包围位于对角线20上的辊9的外周。 无论辊9是平行布置还是以交叉方式布置，辊保持器11能够保持恒定的位置，因此辊保持器11的布置没有辊9的方向的影响。另外， 由于辊保持器11限制辊9的角部9a，所以辊9难以从辊保持器11脱落，因此可以积极地限制辊9，从而能够控制辊9的偏斜。

公开(公告)号：US06616335B2

公开(公告)日：2003-09-09

申请号：US10268938

申请日：2002-10-11

申请人： Hiroshi Niwa ,  Kentarou Nishimura ,  Yasuyuki Abe ,  Kiyomi Tamura

发明人： Hiroshi Niwa ,  Kentarou Nishimura ,  Yasuyuki Abe ,  Kiyomi Tamura

IPC分类号： F16C2906

CPC分类号： F16C33/3706 ,  F16C33/6651 ,  F16H25/2238 ,  Y10T74/19777

摘要： There is provided a rolling element spacer used in a rolling guide device having an endless circulation passage of balls, arranged alternately with many balls in the endless circulation passage, and circulating together with the balls in the endless circulation passage. It has a pair of ball holding seats each of which is formed in a concave spherical face form nearly approximating a spherical face of the ball and sliding-contacts with the ball and, around each ball holding seat, there is formed an annular dropout prevention portion protruding in a ball arranging direction than an edge portion of the ball holding seat and kept in non-contact with respect to the ball seated on the ball holding seat.

摘要翻译： 在滚动导向装置中设置有滚动导向装置，该滚动导向装置具有滚珠的循环循环通道，与循环循环通道中的许多球交替排列，并与滚珠循环在循环循环通道中。 它具有一对球保持座，每个球座形成为几乎接近球的球面并与球滑动接触的凹球面，并且围绕每个球保持座，形成环形防脱部分 在比球保持座的边缘部分更有球排列方向突出，并且相对于坐在球保持座上的球保持非接触。

公开(公告)号：US06513978B2

公开(公告)日：2003-02-04

申请号：US09949992

申请日：2001-09-12

申请人： Takeki Shirai ,  Hiroshi Niwa ,  Kentarou Nishimura ,  Yasuyuki Abe ,  Kiyomi Tamura

发明人： Takeki Shirai ,  Hiroshi Niwa ,  Kentarou Nishimura ,  Yasuyuki Abe ,  Kiyomi Tamura

IPC分类号： F16G2906

CPC分类号： F16C33/3706 ,  F16C33/6614 ,  F16H25/2238 ,  Y10T74/19777

摘要： The present invention provides rolling element spacers used in a rolling guide unit provided with an endless circulating passage for balls; arranged with plural balls alternately therewith in the endless circulating passage; and circulated with these balls in the endless circulating passage. Each of the rolling element spacers has a pair of retaining seats which the balls contact, and is formed so that, on a ball cutting plane perpendicular to the center of rotation of each ball, each retaining seat and a relative ball contact each other at only the two portions of the retaining seat that are in the vicinity of both ends thereof.

公开(公告)号：US20080110286A1

公开(公告)日：2008-05-15

申请号：US12003590

申请日：2007-12-28

申请人： Kentarou Nishimura ,  Akimasa Yoshida ,  Hiroshi Niwa

发明人： Kentarou Nishimura ,  Akimasa Yoshida ,  Hiroshi Niwa

IPC分类号： F16H25/22

CPC分类号： F16C33/3706 ,  F16H25/2219 ,  Y10T74/19749 ,  Y10T74/19767 ,  Y10T74/19772

摘要： The invention relates to a ball screw device in which a screw shaft and a nut member are threadedly engaged with each other through a number of balls. In such a ball screw device, an inner surface of a cover plate contacting an end surface of a nut main body is provided with a projecting return piece adapted to be fit-engaged with a recess cut in an inner peripheral surface of the nut main body, the return piece being provided with a scoop portion for dislodging the balls from the ball rolling groove of the screw shaft and a direction switching passage for guiding the dislodged balls to the entrance of a ball return hole. The projecting return piece is divided into a first piece formed integral with the cover plate and a second piece fixed to the first piece by a curved plane including the center line of the direction switching passage.

公开(公告)号：US07870806B2

公开(公告)日：2011-01-18

申请号：US12003590

申请日：2007-12-28

申请人： Kentarou Nishimura ,  Akimasa Yoshida ,  Hiroshi Niwa

发明人： Kentarou Nishimura ,  Akimasa Yoshida ,  Hiroshi Niwa

IPC分类号： F16H25/20

CPC分类号： F16C33/3706 ,  F16H25/2219 ,  Y10T74/19749 ,  Y10T74/19767 ,  Y10T74/19772

摘要： The invention relates to a ball screw device in which a screw shaft and a nut member are threadedly engaged with each other through a number of balls. In such a ball screw device, an inner surface of a cover plate contacting an end surface of a nut main body is provided with a projecting return piece adapted to be fit-engaged with a recess cut in an inner peripheral surface of the nut main body, the return piece being provided with a scoop portion for dislodging the balls from the ball rolling groove of the screw shaft and a direction switching passage for guiding the dislodged balls to the entrance of a ball return hole. The projecting return piece is divided into a first piece formed integral with the cover plate and a second piece fixed to the first piece by a curved plane including the center line of the direction switching passage.

摘要翻译： 本发明涉及一种滚珠丝杠装置，其中螺杆轴和螺母构件通过多个滚珠彼此螺纹接合。 在这种滚珠丝杠装置中，与螺母主体的端面接触的盖板的内表面设置有突出的复位件，该突出的返回件适于与在螺母主体的内周面上切割的凹部配合 所述返回片设置有用于从所述螺杆轴的滚珠滚动槽中移除滚珠的铲斗部分和用于将移动的球引导到球返回孔的入口的方向切换通道。 突出的返回片被分成与盖板一体形成的第一片和通过包括方向切换通道的中心线的弯曲平面固定到第一片的第二片。

公开(公告)号：US07350434B2

公开(公告)日：2008-04-01

申请号：US10485881

申请日：2002-09-03

申请人： Kentarou Nishimura ,  Akimasa Yoshida ,  Hiroshi Niwa

发明人： Kentarou Nishimura ,  Akimasa Yoshida ,  Hiroshi Niwa

IPC分类号： F16H25/22

CPC分类号： F16C33/3706 ,  F16H25/2219 ,  Y10T74/19749 ,  Y10T74/19767 ,  Y10T74/19772

摘要： The invention relates to a ball screw device in which a screw shaft and a nut member are threadedly engaged with each other through a number of balls. In such a ball screw device, an inner surface of a cover plate contacting an end surface of a nut main body is provided with a projecting return piece adapted to be fit-engaged with a recess cut in an inner peripheral surface of the nut main body, the return piece being provided with a scoop portion for dislodging the balls from the ball rolling groove of the screw shaft and a direction switching passage for guiding the dislodged balls to the entrance of a ball return hole. The projecting return piece is divided into a first piece formed integral with the cover plate and a second piece fixed to the first piece by a curved plane including the center line of the direction switching passage.

摘要翻译： 本发明涉及一种滚珠丝杠装置，其中螺杆轴和螺母构件通过多个滚珠彼此螺纹接合。 在这种滚珠丝杠装置中，与螺母主体的端面接触的盖板的内表面设置有突出的复位件，该突出的返回件适于与在螺母主体的内周面上切割的凹部配合 所述返回片设置有用于从所述螺杆轴的滚珠滚动槽中移除滚珠的铲斗部分和用于将移动的球引导到球返回孔的入口的方向切换通道。 突出的返回片被分成与盖板一体形成的第一片和通过包括方向切换通道的中心线的弯曲平面固定到第一片的第二片。