利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

1091 条记录 (耗时 0.019 秒)

    DRIVE DEVICE
    34.
    发明公开
    DRIVE DEVICE 审中-公开

    公开(公告)号：EP3872367A1

    公开(公告)日：2021-09-01

    申请号：EP19875340.2

    申请日：2019-10-23

    申请人： HI-LEX Corporation

    发明人： INAGAKI, Hiroyuki

    IPC分类号： F16H25/24 ,  E05F15/622 ,  F16H25/20 ,  F16H35/10 ,  H02K7/06

    摘要： A drive device comprises a housing (2) having a first connecting portion (C1), a drive portion (3), a spindle member (4) to rotate by driving of the drive portion (3), a nut member (5) screwed with the spindle member (4); and a moving member (6) coupled to the nut member (5), and has a rotation regulating portion (9) which suppresses rotation of the nut member (5) to move the nut member (5) in an axis X direction of the spindle member (4), wherein the moving member (6) has a second connecting portion (C2), and a fragile portion (61) to be broken by a predetermined force being weaker than a force required to break the nut member (5), and the fragile portion (61) is configured that a fracture portion (62) with which the nut member (5) is pressable by the moving member (6) toward the drive portion (3) is formable when the fragile portion (61) is broken. The drive device, which is connected to two base bodies, makes it possible to recognize an application of an excessive load without the drive device being separated from either one of the base bodies.

    BALL SCREW DEVICE
    35.
    发明公开
    BALL SCREW DEVICE 审中-公开

    公开(公告)号：EP3869068A1

    公开(公告)日：2021-08-25

    申请号：EP19872741.4

    申请日：2019-10-02

    申请人： THK Co., Ltd.

    发明人： NISHIDE, Tetsuhiro ,  IWASHIRO, Sho

    IPC分类号： F16H25/24 ,  F16H25/22

    摘要： Provided is a ball screw device which enables easy production and assembly of a nut member (3) and formation of an endless circulation path for balls in the nut member (3) with high accuracy. The nut member (3) includes a plurality of nut components (5,6) arranged in a superposed manner along an axial direction of a screw shaft (2). At a boundary portion between the nut components (5, 6) which are adjacent to each other, a raceway path (30) for balls (4) extending around a periphery of the screw shaft (2) is formed. A joining surface of each of the nut components (5, 6) used for joining with another one of the nut components includes: a raceway forming surface (53, 62) which is annularly formed around the through hole; and an abutment surface (50,60) for joining which is formed on an outer side in a radial direction with respect to the raceway forming surface (53, 62).

    BALL SCREW
    38.
    发明公开
    BALL SCREW 审中-公开

    公开(公告)号：EP3792523A1

    公开(公告)日：2021-03-17

    申请号：EP19793968.9

    申请日：2019-04-22

    申请人： NSK LTD.

    发明人： OKA, Keitaro

    IPC分类号： F16H25/22 ,  F16H25/24

    摘要： A ball screw includes: a screw shaft (10) having a spiral first screw groove (11) formed in an outer peripheral surface thereof; a nut (20) disposed on the periphery of the screw shaft (10) and having a spiral second screw groove (21) formed in an inner peripheral surface thereof; a plurality of balls (30) accommodated in a rolling path (23) formed by the opposing screw grooves (11, 21); and a circulation piece (40) that forms a ball return passage (42) for circulating the plurality of balls (30) through one circuit or less of the rolling path (23). Traffic variation is made to be small by determining the maximum angle of inclination (a) of the ball return passage (42) in an expression using the lead (L), the ball diameter (Da), and the lead angle (β).