公开(公告)号：EP0899858A1

公开(公告)日：1999-03-03

申请号：EP98116336.3

申请日：1998-08-28

申请人： American Metal & Plastics, Inc.

发明人： Link, Harry Ray

IPC分类号： H02K49/06 ,  F01P7/08

CPC分类号： H02K1/30 ,  B60H1/3222 ,  F01P7/048 ,  F01P7/081 ,  F04B35/002 ,  F04D25/022 ,  F04D25/026 ,  H02K49/06

摘要： A magnetic slip clutch (26,415) is disclosed, which may be fully uncoupled, fully coupled, or coupled in a modulated manner for transmission of variable torque. One use of the clutch is to provide a variable speed drive of a fan (24,424) having fan blades (20,420) for use with an internal combustion engine (12) such as on a vehicle (10). A torque transfer between a clutch driving element (202,416,616) and a driven element (200,418,618) is by a controller and a circuit (30,70,702,722) that modulates the electrical power to control the magnetic field between the driving element (202,416,616) and the driven element (200,418,618). The preferred driving element (202,416,616) carries electromagnetic coils (300-310,438,638) that are energized to develop a magnetic field for coupling to the driven element (200,418,618) that has magnetic elements preferably in the form of magnetizable pole pieces (260-270,429,629) thereon. The clutch includes an electrical generator (435,601) to generate its electrical power. The generator (435,601) receives a trickle supply of current, and it generates an AC current; and a rectifier (710-720) converts this to DC current for the electromagnetic clutch coils (300-310,438,638). If desired, a commutating system (749,751,722) can be used to provide timed pulses of current to the clutch coils (300-310,438,638) to provide more torque in the direction of clutch rotation.

摘要翻译： 公开了一种滑动式离合器（26,415），其可以完全解耦，完全耦合或以调制方式耦合以传输可变转矩。 离合器的一个用途是提供具有风扇叶片（20,420）的风扇（24,424）的变速驱动器，用于与例如车辆（10）上的内燃机（12）一起使用。 离合器驱动元件（202,416,616）和从动元件（200,418,618）之间的转矩传递是通过控制器和电路（30,70,702,722）来调节电功率以控制驱动元件（202,416,616）和被驱动元件 元素（200,418,618）。 优选的驱动元件（202,416,616）承载电磁线圈（300-310,438,638），所述电磁线圈（300-310,438,638）被激励以形成用于联接到所述从动元件（200,418,618）的磁场，所述驱动元件（200,418,618）优选地具有可磁化极片（260-270,429,629）形式的磁性元件 。 离合器包括用于产生其电力的发电机（435,601）。 发电机（435,601）接收电流的涓流供电，产生交流电流; 并且整流器（710-720）将其转换成用于电磁离合器线圈（300-310,438,638）的DC电流。 如果需要，可以使用整流系统（749,751,722）来向离合器线圈（300-310,438,638）提供电流的定时脉冲，以在离合器旋转方向上提供更多的转矩。