Selectable one-way clutch

Patent metadata

Field	Value
Publication number	US-10018232-B2
Application number	US-201615091972-A
Country	US
Kind code	B2
Filing date	Apr 6, 2016
Priority date	Apr 8, 2015
Publication date	Jul 10, 2018
Grant date	Jul 10, 2018

Abstract

A selectable one-way clutch includes a first plate, a second plate, a claw, a selector plate and a plate driving device. The selector plate rotates relative to the first plate between a locked position and a released position. The plate driving device includes a drive arm, an actuator, a transmission mechanism, a stopper and a release mechanism. The actuator outputs a driving force to drive the selector plate via the drive arm. The transmission mechanism transmits the driving force to the drive arm such that the selector plate rotates from the released position to the locked position. The stopper is configured to move between a restricted position and an unrestricted position. The stopper is placed at the restricted position when the actuator is not operated. The release mechanism transmits the driving force to the stopper such that the stopper moves from the restricted position to the unrestricted position.

First claim

What is claimed is:

1. A selectable one-way clutch comprising:
a first plate having an axis orthogonal to a surface of said first plate;
a second plate having an axis orthogonal to a surface of said second plate such that said second plate is placed relative to the first plate so that the axis of the second plate coincides with the axis of the first plate;
a claw configured to project from the first plate toward the second plate, the claw being provided in the first plate, the claw being configured to:
mesh with a recessed portion in the second plate when the claw projects from the first plate and when the second plate rotates in one predetermined direction, and
not mesh with the recessed portion in the second plate when the claw projects from the first plate and when the second plate rotates in an opposite direction from the one predetermined direction;

a selector plate placed adjacent to the first plate, the selector plate being configured to rotate relative to the first plate between a locked position at which the claw projects from the first plate and a released position at which the claw is maintained to be accommodated on a first-plate-side; and
a plate driving device configured to rotationally drive the selector plate, the plate driving device including a drive arm, an actuator, a transmission mechanism, a stopper, and a release mechanism,
the drive arm extending from the selector plate,
the actuator being configured to output a driving force to drive the selector plate via the drive arm at a time of operation,
the transmission mechanism being configured to transmit, to the drive arm, the driving force output from the actuator, such that the selector plate rotates from the released position to the locked position,
the stopper being configured to move between a restricted position at which a rotation of the selector plate from the released position to the locked position is restricted and an unrestricted position at which the restriction is released, the stopper being placed at the restricted position at a time of non-operation of the actuator,
the release mechanism being configured to transmit, to the stopper, the driving force output at the time of operation of the actuator such that the stopper moves from the restricted position to the unrestricted position.

2. The selectable one-way clutch according to claim 1 , wherein
the drive arm extends radially outwardly from the selector plate; and
the stopper is configured to abut with the drive arm when the selector plate rotates in a direction from the released position toward the locked position and the stopper is positioned at the restricted position.

3. The selectable one-way clutch according to claim 2 , further comprising an interference prevention portion provided in the drive arm, the interference prevention portion being configured to prevent the stopper from interfering with a moving range of the drive arm when the stopper moves from the unrestricted position to the restricted position.

4. The selectable one-way clutch according claim 1 , wherein the transmission mechanism and the release mechanism are each configured such that, when the operation of the actuator starts to operate, the driving force is transmitted to the stopper so that the stopper moves to the unrestricted position, and then, the driving force is transmitted to the drive arm such that the drive arm operates.

5. The selectable one-way clutch according to claim 4 , wherein:
the actuator includes a drive rod, the drive rod is configured to transmit the driving force;
the transmission mechanism is placed on an extended line of the drive rod via a gap;
the transmission mechanism includes a transmission rod, the transmission rod is configured to abut with the drive rod when the drive rod makes a stroke by an amount equal to the gap, such that the transmission rod transmits the driving force to the drive arm; and

the release mechanism includes an intermediate mechanism, the intermediate mechanism is provided between the drive rod and the stopper, the intermediate mechanism is configured to transmit the driving force to the stopper when the drive rod makes the stroke.

Assignees

• Toyota Motor Co Ltd

Inventors

• Itagaki Kenji
• Magarida Naofumi

Classifications

• F16D41/08

  with provision for altering the freewheeling action · CPC title

• F16D27/10

  with an electromagnet not rotating with a clutching member, i.e. without collecting rings {(F16D27/004 takes precedence)} · CPC title

• F16D41/12 Primary

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

• F16D28/00

  Electrically-actuated clutches (arrangements for synchronisation F16D23/02; clutches actuated directly by means of an electromagnet F16D27/00; automatic clutches F16D43/00 - F16D45/00; external control F16D48/00) · CPC title

• F16D41/084

  the intermediate coupling members wedging by pivoting or rocking · CPC title