Selectable one-way clutch having strut with separate armature

Patent metadata

Field	Value
Publication number	US-2016160941-A1
Application number	US-201414906097-A
Country	US
Kind code	A1
Filing date	Jul 29, 2014
Priority date	Jul 29, 2013
Publication date	Jun 9, 2016
Grant date	—

Abstract

A selectable one-way clutch includes a clutch module and at least one electromagnetic actuator module. Each electromagnetic actuator module includes at least one electromagnetic actuator assembly having a coil assembly, a locking strut, and a connection member mechanically interconnected to the locking strut for moving it between released and deployed positions in response to energization of the coil assembly.

First claim

What is claimed is:

1 . A selectable one-way clutch, comprising:
a clutch module including a first clutch member and a second clutch member having a plurality of cam surfaces, wherein at least one of said first and second clutch members is adapted to rotate relative to the other of said first and second clutch members; and an electromagnetic actuator module having a frame and at least one electromagnetic actuator, said frame adapted to be secured to said first clutch member, said electromagnetic actuator including an energizeable coil assembly secured to said frame, a first member pivotably coupled to said frame for pivotal movement relative to said coil assembly between a non-actuated position and an actuated position, a second member mechanically coupled to said first member such that movement of said first member between its non-actuated and actuated position causes concomitant pivotal movement of said second member between a released position displaced from engagement with said cam surfaces on said second clutch member and a locked position in engagement with one of said cam surfaces on said second clutch member, and a biasing member for normally biasing said second member to its released position.

2 . The selectable one-way clutch of claim 1 , wherein said first member is a magnetic armature that is pivotably moveable relative to a magnetic pole member of said colt assembly, and wherein said armature includes a first end segment pivotably coupled to said frame and a second end segment mechanically connected to a base end segment of said second member, said second member has an engagement end segment adapted to lockingly engage said cam surfaces.

3 . The selectable one-way clutch of claim 2 , wherein said second member is a locking strut having its base end segment pivotably disposed within a pivot channel formed in said frame.

4 . The selectable one-way clutch of claim 3 , wherein said armature and said locking strut are oriented in an offset configuration with said second end segment of said armature disposed in a coupling channel formed in said base end segment of said locking strut, and wherein said biasing member acts on said base end segment of said locking strut for normally biasing said locking strut to its released position.

5 . The selectable one-way clutch of claim 3 , wherein said armature and said locking strut are oriented such that said armature is disposed between said pole piece of said coil assembly and said locking strut in an under-strut configuration.

6 . The selectable one-way clutch of claim 2 , wherein said pole member includes a U-shaped member having a pair of laterally-spaced leg sections each having a peripheral end surface forming an air gap with an intermediate segment of said armature located between its first and second end segments, and wherein said second end segment of said armature is disposed in a pivot channel formed in said base end segment of said locking strut.

7 . The selectable one-way clutch of claim 6 , wherein said intermediate segment of said armature includes a pair of laterally-spaced arm segments configured to be aligned with said laterally-spaced leg segments of said pole member, and wherein each arm segment has a peripheral end surface forming an air gap with a corresponding one of said peripheral end surfaces of said leg segments.

8 . The selectable one-way clutch of claim 7 , wherein said peripheral end surfaces of said arm segments on said armature and said leg segments on said pole piece are tapered.

9 . The selectable one-way clutch of claim 1 wherein energization of said coil assembly generates a magnetic circuit that attracts said first member and forcibly moves said first member from its non-actuated position to its actuated position which causes said second member to move from its released position to its locked position.

10 . The selectable one-way clutch of claim 1 , wherein said first member is a connection member having a first end segment pivotably mounted to said frame, a second end segment mechanically connected to said second member, and an intermediate segment disposed between said first and second end segments, and wherein said coil assembly includes a linearly moveable plunger coupled to said intermediate segment of said connection member, said plunger operable in an extended position to permit said connection member to be located in its non-actuated position and further operable in a retracted position to forcibly move said connection member to its actuated position for moving said second member to its locked position.

11 . The selectable one-way clutch of claim 10 , wherein said second member is a locking strut having a base end segment pivotably mounted to said frame and an engagement end segment adapted to locking engage one of said cam surfaces when said locking strut is moved into its locked position, and wherein said second end segment of said connection member is pivotably coupled to said base end segment of said locking strut.

12 . The selectable one-way clutch of claim 10 , wherein a pin is slideably disposed in a bore formed through said frame and which interconnects said plunger to said intermediate segment of said connection member.

13 . The selectable one-way clutch of claim 1 , wherein said coil assembly includes a base member mounted to said frame and having a center pole piece, wherein said first member is a magnetic armature pivotably moveable relative to said center pole piece, wherein said armature includes a first end segment pivotably coupled to said frame, a second end segment mechanically connected to said second member, and an intermediate segment establishing a magnetic circuit with said center pole piece upon energization of said coil assembly.

14 . The selectable one-way clutch of claim 13 , wherein said second member is a locking strut having a base end segment pivotably mounted to said frame and an engagement end segment adapted to lockingly engage one of said cam surface upon movement of said locking strut to its locking strut to its locked position.

15 . The selectable one-way clutch of claim 4 , wherein said second end segment of said armature is disposed in a pivot channel formed in said base end segment of said locking strut.

16 . The selectable one-way clutch of claim 1 , wherein said electromagnetic actuator module includes a plurality of electromagnetic actuators mounted to said frame.

Assignees

• Magna Powertrain Usa Inc

Inventors

• Green Darrell F
• Cioc Adrian C

Classifications

• F16D27/09 Primary

  and with interengaging jaws or gear-teeth · CPC title

• F16D27/14

  Details · CPC title

• F16D41/12

  with hinged pawl co-operating with teeth, cogs, or the like (F16D41/02, F16D41/24 take precedence) · CPC title

• F16D27/118

  with interengaging jaws or gear teeth · CPC title

• F16D41/16

  the action being reversible · CPC title