Lubricating structure

Patent metadata

Field	Value
Publication number	US-10738877-B2
Application number	US-201715710263-A
Country	US
Kind code	B2
Filing date	Sep 20, 2017
Priority date	Sep 23, 2016
Publication date	Aug 11, 2020
Grant date	Aug 11, 2020

Abstract

A selectable one-way clutch includes a pocket plate, a notch plate, and a selector plate, and the selector plate is configured to rotate so as to switch the clutch between an engaged state and a non-engaged state. A lubricant passage through which a lubricant is supplied to the selectable one-way clutch has a lubricant inlet and a lubricant outlet, and the lubricant outlet is located on the lower side of the lubricant inlet in a direction of gravitational force, and connected to an inside of the selectable one-way clutch. The lubricant passage includes an inclined surface that is inclined with respect to the direction of gravitational force, between the lubricant inlet and the lubricant outlet, and the inclined surface has an opening.

First claim

What is claimed is:

1. A lubricating structure comprising:
a selectable one-way clutch including a pocket plate, a notch plate, and a selector plate,
the pocket plate being attached to a case,
the notch plate being attached to a rotating member connected to an output shaft of a power source of a vehicle,
the selector plate being provided between the pocket plate and the notch plate, the selector plate being configured to rotate so as to switch the selectable one-way clutch between an engaged state and a non-engaged state, the engaged state being a state in which torque is transmitted between the pocket plate and the notch plate, the non-engaged state being a state in which torque is not transmitted between the pocket plate and the notch plate,
the pocket plate, the notch plate, and the selector plate being arranged side by side in an axial direction of the rotating member; and

a lubricant passage through which a lubricant is supplied to the selectable one-way clutch,
the lubricant passage having a lubricant inlet and a lubricant outlet,
the lubricant outlet being located on a lower side of the lubricant inlet in a direction of gravitational force, and connected to an inside of the selectable one-way clutch,

the lubricant passage including an inclined surface between the lubricant inlet and the lubricant outlet, the inclined surface being inclined with respect to the direction of gravitational force, the inclined surface having an opening, and the inclined surface being fixed to the case, wherein the lubricant flows along the inclined surface, and is discharged outside of the lubricant passage through the opening.

2. The lubricating structure according to claim 1 , wherein
the lubricant passage is provided with a first protruding portion in the vicinity of an opening end of the opening, the first protruding portion protruding from the inclined surface on one side of the opening closer to the lubricant inlet, toward an inside of the lubricant passage.

3. The lubricating structure according to claim 2 , wherein:
the lubricant passage is provided with a second protruding portion in the vicinity of the opening end of the opening, the second protruding portion protruding from the inclined surface on the other side of the opening closer to the lubricant outlet, toward the inside of the lubricant passage; and
a distance between a plane and a distal end of the second protruding portion is smaller than a distance between the plane and a distal end of the first protruding portion, the plane includes the opening end of the opening.

4. The lubricating structure according to claim 1 , wherein
a height from the lubricant outlet to an opening end of the opening which is closest to the lubricant outlet as measured in the direction of gravitational force is set such that a first hydraulic pressure value is larger than a second hydraulic pressure value,
the first hydraulic pressure value is a value of a hydraulic pressure generated by the lubricant accumulated between the lubricant outlet and the opening in the lubricant passage,
the second hydraulic pressure value is a maximum value of the hydraulic pressure of the lubricant generated within the selectable one-way clutch, due to a difference between a rotational speed of the pocket plate and a rotational speed of the notch plate when the selectable one-way clutch is in the non-engaged state.

5. A lubricating structure comprising:
a selectable one-way clutch including a pocket plate, a notch plate, and a selector plate, the pocket plate being attached to a case, the notch plate being attached to a rotating member connected to an output shaft of a power source of a vehicle, the selector plate being provided between the pocket plate and the notch plate, the selector plate being configured to rotate so as to switch the selectable one-way clutch between an engaged state and a non-engaged state, the engaged state being a state in which torque is transmitted between the pocket plate and the notch plate, the non-engaged state being a state in which torque is not transmitted between the pocket plate and the notch plate, the pocket plate, the notch plate, and the selector plate being arranged side by side in an axial direction of the rotating member; and
a lubricant passage through which a lubricant is supplied to the selectable one-way clutch, the lubricant passage having a lubricant inlet and a lubricant outlet, the lubricant outlet being located on a lower side of the lubricant inlet in a direction of gravitational force, and connected to an inside of the selectable one-way clutch, the lubricant passage including an inclined surface between the lubricant inlet and the lubricant outlet, the inclined surface being inclined with respect to the direction of gravitational force and having an opening, and the inclined surface being fixed to the case, wherein the lubricant passage includes:
a first lubricant passage in which the lubricant enters the lubricant inlet, passes along the inclined surface, and is discharged outside of the lubricant outlet; and
a second lubricant passage in which the lubricant enters the lubricant inlet, passes along the inclined surface, and is discharged out of the lubricant passage through the opening.

Assignees

• Toyota Motor Co Ltd

Inventors

• KUROSAKI Yuki
• Shioiri Hiroyuki
• Tomita Mitsuaki
• Kato Shotaro
• Shibata Hiroyuki

Classifications

• Y02T10/62

  Hybrid vehicles · CPC title

• B60K6/445

  Differential gearing distribution type · CPC title

• F16H57/0484

  with variable gear ratio or for reversing rotary motion · CPC title

• F16H57/0436

  Pumps · CPC title

• B60K6/383

  One-way clutches or freewheel devices · CPC title