Selectable one-way clutch apparatus

Patent metadata

Field	Value
Publication number	US-10066679-B2
Application number	US-201515115972-A
Country	US
Kind code	B2
Filing date	Feb 27, 2015
Priority date	Feb 28, 2014
Publication date	Sep 4, 2018
Grant date	Sep 4, 2018

Abstract

A selectable one-way clutch apparatus. The one-way clutch apparatus includes a first plate that has an inner surface that defines at least one compartment. A second plate has a ratchet surface aligned axially adjacent with the inner surface of the first plate and presents a plurality of teeth. Each of the compartments is divided into a strut section, an armature section and a core section. At least one electromagnetic actuator unit is received by the compartment. The electromagnetic actuator unit includes a coil assembly, an armature assembly that has at least one armature finger pivotally moveable in the armature section for movement toward and away from the coil assembly in response to the coil assembly being energized, and at least one strut that is pivotally moveable in the strut section for moving in response to engagement by the armature finger between a locked position and a released position.

First claim

What is claimed is:

1. A selectable one-way clutch apparatus, comprising:
a first plate extending along an axis and having an inner surface defining at least one compartment;
a second plate having a ratchet surface being aligned axially adjacent with said inner surface of said first plate and presenting a plurality of teeth;
each of said compartments divided into a strut section, an armature section and a core section with said core section disposed between said strut and armature sections; and
at least one electromagnetic actuator unit received by said compartment, said electromagnetic actuator unit including at least one coil assembly disposed in said core section, at least one armature assembly having at least one armature finger pivotally moveable in said armature section and extending over said coil section for movement toward and away from said coil assembly in response to said coil assembly being energized, and at least one strut being pivotally moveable in said strut section for moving in response to engagement by said armature finger between a locked position in engagement with one of said teeth and a released position displaced from engagement with said teeth,
wherein said first plate defines a coil chamber extending axially into said first plate in said core section of said compartment and receiving said coil assembly, said coil assembly including a core disposed in said coil chamber and a coil disposed about said core for focusing a magnetic flux produced by said coil on said core to draw said armature finger toward said core when said coil is energized,
wherein said coil chamber extends axially through said first plate, said core of said coil assembly includes a disc portion received by said coil chamber and a projection portion extending from said disc portion with said coil wrapped about said projection portion and axially abutting said disc portion, and
wherein said first plate includes an overhang extending radially inwardly into said coil chamber at said lower surface of said compartment, said coil is sandwiched axially between said disc portion of said core and said overhang of said first plate for holding said coil in position.

2. The selectable one-way clutch apparatus as set forth in claim 1 wherein said at least one compartment includes a plurality of compartments disposed about said first plate and said at least one electromagnet actuator unit includes a plurality of electromagnet actuator units each disposed in one of said compartments.

3. The selectable one-way clutch apparatus as set forth in claim 1 and further including a platform integrally connected with said first plate closing said coil chamber adjacent to said outer surface of said first plate, wherein said core of said coil assembly is integrally connected with and extending from said platform in said coil chamber.

4. The selectable one-way clutch apparatus as set forth in claim 1 wherein said first plate further defines an outer surface extending in generally spaced and parallel relationship with said inside surface, said disc portion of said core is disposed generally flush with said outer surface of said first plate.

5. The selectable one-way clutch apparatus as set forth in claim 1 wherein said coil chamber extends annularly and continuously about said first plate.

6. The selectable one-way clutch apparatus as set forth in claim 5 wherein said first plate defines a hole extending axially therethrough, said coil chamber extends annularly about said hole of said first plate, said coil is disposed in said coil chamber and extends annularly and continuously about said hole of said first plate.

7. A selectable one-way clutch apparatus, comprising:
a first plate extending along an axis and having an inner surface defining at least one compartment;
a second plate having a ratchet surface being aligned axially adjacent with said inner surface of said first plate and presenting a plurality of teeth;
each of said compartments divided into a strut section, an armature section and a core section with said core section disposed between said strut and armature sections; and
at least one electromagnetic actuator unit received by said compartment, said electromagnetic actuator unit including at least one coil assembly disposed in said core section, at least one armature assembly having at least one armature finger pivotally moveable in said armature section and extending over said coil section for movement toward and away from said coil assembly in response to said coil assembly being energized, and at least one strut being pivotally moveable in said strut section for moving in response to engagement by said armature finger between a locked position in engagement with one of said teeth and a released position displaced from engagement with said teeth,
wherein said first plate presents a lower surface in said compartment, a pivot rail and a ledge each extend upwardly from said lower surface in said compartment in spaced relationship with one another, and
wherein said strut includes a base segment and a pair of locking arms extending from said base segment in spaced and parallel relationship with one another and terminating at a locking edge for engaging said teeth of said second plate when said strut is in said locked position.

8. The selectable one-way clutch apparatus as set forth in claim 7 wherein said first plate defines a pair of slots on opposing sides of said strut section of said compartment, a pair of pivot posts each extend outwardly from one of said locking arms and are received by one of said slots for pivoting said strut about said pivot post between said locked and released positions, said strut engages said armature finger in said strut section of said compartment.

9. The selectable one-way clutch apparatus as set forth in claim 8 wherein a spring extends between said lower surface in said strut section of said compartment and said base of said strut for biasing said strut in said locked position.

10. The selectable one-way clutch apparatus as set forth in claim 9 wherein said first plate defines a spring orifice on said lower surface in said strut section for receiving said spring.

11. The selectable one-way clutch apparatus as set forth in claim 10 wherein said strut section extends along said ledge and includes said pair of slots and said spring orifice, said armature section includes said pivot rail, and said core section includes said coil chamber.

12. The selectable one-way clutch apparatus as set forth in claim 8 wherein said armature finger extends between a first end pivotally disposed in said armature section and a second end disposed in said strut section in engagement with said strut and having an intermediate portion between said first and second ends and overlying said core section of said compartment.

Assignees

• Magna Powertrain Usa Inc

Inventors

• Cioc Adrian C
• Greene Darrell F
• Dorigo David V
• Steele Sean A

Classifications

• F16D41/125

  the pawl movement having an axial component · CPC title

• F16D25/0638

  with more than two discs, e.g. multiple lamellae · CPC title

• F16D41/14

  the effective stroke of the pawl being adjustable · CPC title

• F16D27/09 Primary

  and with interengaging jaws or gear-teeth · CPC title

• F16D27/02 Primary

  with electromagnets incorporated in the clutch, i.e. with collecting rings {(F16D27/004 takes precedence)} · CPC title