Dual-acting electric one-way clutch assembly

Patent metadata

Field	Value
Publication number	US-11098770-B2
Application number	US-201716344975-A
Country	US
Kind code	B2
Filing date	Nov 10, 2017
Priority date	Nov 10, 2016
Publication date	Aug 24, 2021
Grant date	Aug 24, 2021

Abstract

A dual-acting selectable one-way coupling (SOWC) device configured to include a clutch module and an electromagnetic actuator module. The clutch module includes an outer race and an inner race assembly rotatable relative to the outer race. The inner race assembly including a rotatably driven first inner race member, a second inner race member, and compliant connector members drivingly interconnecting the first and second race members. The electromagnetic actuator module includes an electromagnetic actuator operable to releasably engage the second inner race member. An auxiliary locking assembly is operable to independently releasably engage the second inner race member.

First claim

What is claimed is:

1. A selectable one-way coupling device, comprising:
a clutch module including a first clutch component and a second clutch component supported for rotation relative to the first clutch component, the second clutch component configured to include a first member, a second member, and a plurality of compressible connector members drivingly connecting the first and second members, wherein first locking teeth are formed on the second member, wherein the first clutch component includes a cylindrical outer rim, a cylindrical inner rim and a plate segment extending radially between the outer rim and the inner rim so as to define an annular inner race cavity therebetween, and wherein the second clutch component is rotatably disposed within the inner race cavity; and
an electromagnetic actuator module having an actuator frame and at least one electromagnetic actuator assembly, the actuator frame adapted to be secured to the first clutch component, the electromagnetic actuator assembly including an energizable coil assembly secured to the actuator frame, an active strut pivotably coupled to the actuator frame and moveable between a non-deployed position when the coil assembly is non-energized and a deployed position when the coil assembly is energized, and a biasing member for normally biasing the active strut toward its non-deployed position,
wherein the active strut is displaced from engagement with the first locking teeth when located in its non-deployed position to establish a freewheel mode, and wherein the active strut is lockingly engaged with the first locking teeth when located in its deployed position to establish a lockup mode.

2. The selectable one-way coupling device of claim 1 , wherein the compressible connector members are compression springs.

3. The selectable one-way coupling device of claim 1 , wherein the compressible connector members are elastomeric blocks.

4. The selectable one-way coupling device of claim 1 further comprising an auxiliary locking mechanism having a power-operated actuator configured to move a latching unit between an unlatched position and a latched position relative to second locking teeth formed on the second member of the second clutch component, wherein the latching unit operates to disengage the second locking teeth and permit rotation of the second clutch component relative to the first clutch component when located in its unlatched position, and wherein the latching unit operates to engage the second locking teeth to prevent rotation of the second clutch component relative to the first clutch component when located in its latched position.

5. The selectable one-way coupling device of claim 4 , wherein the electromagnetic actuator module includes first and second electromagnetic actuator assemblies, wherein the first electromagnetic actuator assembly is arranged to selectively engage the first locking teeth and prevent rotation of the second clutch component relative to the first clutch component in a first direction, and wherein the second electromagnetic actuator assembly is arranged to selectively engage the first locking teeth and prevent rotation of the second clutch component relative to the first clutch component in a second direction.

6. The selectable one-way coupling device of claim 4 wherein the second member of the second clutch component includes an outer cylindrical lip segment and a radial ring segment extending radially inwardly from the outer cylindrical lip segment, wherein the first locking teeth are formed on the outer cylindrical lip segment, wherein an axial extension extends axially from the outer cylindrical lip segment, and wherein the second locking teeth are defined by the axial extension.

7. The selectable one-way coupling device of claim 6 wherein the latching unit is a roller bracket unit including a bracket and a roller, wherein the bracket defines a first groove slideably retaining opposite ends of the roller and a second groove aligned orthogonally with respect to the first groove and receiving the outer cylindrical lip segment of the second clutch component, wherein the roller is moveable between the unlatched position and the latched position, wherein the roller is disengaged from the second locking teeth when the roller is in the unlatched position, and wherein the roller is positioned between a pair of the second locking teeth when the roller is in the latched position.

8. The selectable one-way coupling device of claim 1 , wherein the first member of the second clutch component includes an outer cylindrical flange segment, an inner cylindrical flange segment, and a radial web segment extending radially between the outer cylindrical flange segment and the inner cylindrical flange segment.

9. The selectable one-way coupling device of claim 8 wherein a drive hub is positioned radially inward of the second clutch component and drivingly connected to the second clutch component.

10. The selectable one-way coupling device of claim 9 wherein the inner cylindrical flange segment presents a plurality of splines coupled with the drive hub.

11. The selectable one-way coupling device of claim 8 wherein a portion of the inner cylindrical flange segment is rotatably supported on the inner rim of the first clutch component.

12. The selectable one-way coupling device of claim 8 wherein the second member of the second clutch component includes an outer cylindrical lip segment and a radial ring segment extending radially inwardly from the outer cylindrical lip segment, and wherein the first locking teeth are formed on the outer cylindrical lip segment.

13. The selectable one-way coupling device of claim 12 wherein a plurality of alternating arcuate grooves and driven pockets are defined by the radial ring segment.

14. The selectable one-way coupling device of claim 13 wherein the compressible connector members are each disposed within one of the driven pockets.

15. A selectable one-way coupling device, comprising:
a clutch unit including a first clutch component and a second clutch component supported for rotation relative to the first clutch component, the second clutch component configured to include a first member, a second member, and a plurality of compressible connector members drivingly interconnecting the first and second members, wherein first locking teeth are formed on the second member;
an electromagnetic actuator module having an actuator frame and an electromagnetic actuator assembly, wherein the actuator frame is secured to the first clutch component, wherein the electromagnetic actuator assembly includes an energizeable coil assembly secured to the actuator frame, an active strut pivotably coupled to the actuator frame for movement between a non-deployed position when the coil assembly is non-energized and a deployed position when the coil assembly is energized, and a biasing member for biasing the active strut toward its non-deployed position; and
an auxiliary locking mechanism having a latching unit and a power-operated actuator configured to move the latching unit between an unlatched position and a latched position relative to second locking teeth formed on the second member of the clutch component, wherein the latching unit operates to disengage the second locking teeth and permit rotation of the second clutch component relative to the first clutch component when located in its unlatched position and to engage the second locking teeth and prevent rotation of the second clutch component relative to the first clutch component when located in its latched position.

16. The selectable one-way coupling device of c

Assignees

• Magna Powertrain Usa Inc

Inventors

• Cioc Adrian C
• Dorigo David Victor

Classifications

• F16D27/00

  Magnetically- {or electrically-} actuated clutches; Control or electric circuits therefor (clutches with magnetisable particles F16D37/02; {with electro-rheological fluids F16D37/008}) · CPC title

• F16D41/14 Primary

  the effective stroke of the pawl being adjustable · CPC title

• F16D41/16 Primary

  the action being reversible · CPC title

• F16D27/102

  with radially movable clutching members (F16D27/105 takes precedence) · CPC title