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1091 条记录 (耗时 0.021 秒)

    BALLSCREW ACTUATORS
    42.
    发明公开
    BALLSCREW ACTUATORS 审中-公开

    公开(公告)号：EP3744997A1

    公开(公告)日：2020-12-02

    申请号：EP19290033.0

    申请日：2019-05-29

    申请人： Goodrich Actuation Systems SAS

    发明人： Trézières, Marlène

    IPC分类号： F16H25/22 ,  F16H25/24 ,  F16H57/04

    摘要： A ballscrew actuator comprises a ballnut (6) having at least one first helical groove (10) formed on a radially inner surface (8) and defining an axis (X), a ballscrew (4) disposed along the axis (X) within the ballnut (6), the ballscrew (4) having at least one second helical groove (12) formed on a radially outer surface (14) and opposed to the first helical groove (10) so as to form at least one helical raceway (16) and a plurality of balls or rolling elements (18) disposed in the at least one helical raceway (12). The ballscrew (4) is movable relative to the ballnut (6) between a stowed position and a deployed position. The ballscrew (4) comprises a ballscrew bore (40) extending axially therein. A lubrication piston (42) is mounted for sliding movement within the ballscrew bore (40) and divides the ballscrew bore (40) axially into a lubricant receiving portion (44) and a pressurising portion (46). At least one lubrication passage (48) extends between the lubricant receiving portion (44) of the ballscrew bore (40) and an interface (38) between the ballscrew (4) and the ballnut (6). The actuator (2) further comprises a pump (60). The pump (60) comprises a pump chamber (62) having an outlet (64) in fluid communication with the pressurising portion (46) of the ballscrew bore (40), an air inlet passage (68) for admitting air into the pump chamber (62) and a pumping piston (66) movable in a pumping direction for pressurising air in the pump chamber (62). The pumping piston (66) is configured and arranged such that it is moved in the pumping direction as the ballscrew (4) moves axially relative to the ballnut (6) by engagement with an opposing structure of the actuator (2) during movement of the ballscrew (4) between its stowed and deployed positions. The pressurised air moves into the pressurising portion of the ballscrew bore (40) through the outlet (64) so as to move the lubrication piston (42) therein, thereby to move lubricant (20) through the lubrication passage (48).

    TURNING DEVICE
    45.
    发明公开
    TURNING DEVICE 审中-公开

    公开(公告)号：EP3699061A1

    公开(公告)日：2020-08-26

    申请号：EP20156657.7

    申请日：2020-02-11

    申请人： JTEKT CORPORATION

    发明人： KONDO, Yoshio ,  KISHIDA, Fumio ,  OGATA, Toshiaki ,  NAKAMURA, Keishi ,  SUZUKI, Hirohide

    IPC分类号： B62D5/00 ,  F16H25/24

    摘要： A turning device (10) includes a turning shaft (11) having a first ball screw groove (11a2) as one of a left screw and a right screw and a second ball screw groove (11b2) as the other of the left screw and the right screw and turning wheels to be turned by moving in an axial direction, a first electric motor (15) generating a first driving force, a second electric motor (16) operating independently of the first electric motor (15) and generating a second driving force, a first ball screw nut (17) transmitting the first driving force generated by the first electric motor (15) to the first ball screw groove (11a2), a second ball screw nut (18) transmitting the second driving force generated by the second electric motor (16) to the second ball screw groove (11b2), and a rotation regulating part (19) regulating relative rotation of the turning shaft (11) around an axis with respect to a housing (14) .

    ACTUATING DEVICE FOR WINDOW FRAMES AND FOR SHADING FINS
    48.
    发明公开
    ACTUATING DEVICE FOR WINDOW FRAMES AND FOR SHADING FINS 审中-公开

    公开(公告)号：EP3591263A1

    公开(公告)日：2020-01-08

    申请号：EP19185033.8

    申请日：2019-07-08

    申请人： Topp Srl a socio unico

    发明人： STEFANOU, Ath. Theodoros ,  CAVALCANTE, Toni

    IPC分类号： F16H25/24

    摘要： An actuation device (10) for shading frames and fins which comprises:
    - a frame (11),
    - a rod (12) which is connected to the frame (11) in a sliding manner in an extension direction (A) and
    - an actuator (13) which has a motor (14), a screw type element (15) which extends in the extension direction (A) and a nut element (16) which is connected to the screw type element (15) and which is fixed to a first end (12a) of the rod (12).
    The motor (14) has a stator which is fixed to the frame (11) and a rotor which is fixed to the screw type element (15) in order to rotate it with respect to the extension direction (A) .
    The actuation device (10) comprises at least one reinforcement member (20, 120) which comprises:
    - a first slider (21) which has a first seat (21a) which is engaged by the rod (12) in a sliding manner in the extension direction (A),
    - a second slider (22) which has a second seat (22a) which is engaged by the screw type element (15) in a sliding manner in the extension direction (A),
    - a spacer element (23) which is rigidly fixed to the first slider (21) and the second slider (22) in order to maintain them at a predefined spacing.
    The actuation device (10) is configured so as to counteract offsetting of the first seat (21a) with respect to the second seat (22a).