Fluid routing within a clutch

Patent metadata

Field	Value
Publication number	US-10801560-B2
Application number	US-201816139122-A
Country	US
Kind code	B2
Filing date	Sep 24, 2018
Priority date	Sep 24, 2018
Publication date	Oct 13, 2020
Grant date	Oct 13, 2020

Abstract

A one-way clutch is provided. The one-way clutch may include an inner race and an outer race that may be provided with a pocket defining a leading edge and a trailing edge that may define a fluid passage. The one-way clutch may also include a rocker. The rocker may be disposed between the inner and outer races and include first and second ends. The first end may define first cross-sectional area and the second end, and the leading edge may define a second cross-sectional area that is less than the first.

First claim

What is claimed is:

1. A one-way clutch comprising:
an outer race provided with a pocket defining a leading edge and a trailing edge; and
a rocker pivotally connected to the outer race configured to pivot between a disengaged position and an engaged position wherein when in the engaged position a first end of the rocker extends radially inward with respect to the leading edge, wherein a chamber is defined between an upper surface of a second end of the rocker and a portion of the pocket, wherein the trailing edge defines a notch arranged to route fluid from the trailing edge to the chamber, and wherein the chamber is configured to receive the fluid and wherein the received fluid accumulates pressure such that force is applied to the rocker to bias the rocker to the disengaged position, wherein the trailing edge includes a recessed portion, wherein the recessed portion defines the notch.

2. The one-way clutch of claim 1 , wherein the notch has a rectangular periphery.

3. The one-way clutch of claim 1 , further comprising a blocking member disposed within the outer race adjacent to the first end of the rocker and configured to block fluid from flowing along an upper surface of the first end of the rocker.

4. The one-way clutch of claim 3 , wherein the blocking member is a sensor.

5. The one-way clutch of claim 4 , wherein the sensor is a hall sensor.

6. The one-way clutch of claim 1 further comprising, a solenoid configured to apply force to the rocker to displace the rocker from the disengaged position to the engaged position.

7. A one-way clutch comprising:
an inner race, provided with an outer circumferential surface defining a tooth, rotatable in a rotational direction;
an outer race defining an inner circumferential surface, arranged concentrically with the inner race, provided with a pocket, wherein the pocket and the inner circumferential surface defines a leading edge and a trailing edge; and
a rocker pivotally connected to the outer race at a pivot point, wherein the rocker is configured to pivot between a tucked position and an engaged position, wherein when in the engaged position, a first end of the rocker extends radially inward with respect to the leading edge, wherein the trailing edge includes a recessed portion, wherein the recessed portion defines a fluid notch extending into the pocket.

8. The one-way clutch of claim 7 , further comprising a solenoid configured to apply force to the rocker to displace the rocker from the tucked position to the engaged position.

9. The one-way clutch of claim 7 , wherein the outer race comprises a blocking member disposed within the outer race and adjacent to the second end of the rocker configured to block fluid from flowing along an upper surface of the second end of the rocker.

10. The one-way clutch of claim 9 , wherein the blocking member is a sensor.

11. The one-way clutch of claim 7 , wherein a second end of the rocker and the fluid notch are spaced apart by a first distance defining a first cross-sectional area, and wherein the first end of the rocker and the leading edge are spaced apart by a second distance, defining a second cross-sectional area that is less than the first.

12. A one-way clutch comprising:
an inner race;
an outer race provided with a pocket defining a leading edge and a trailing edge that defines a fluid passage; and
a rocker, including first and second ends, pivotally connected to the outer race, wherein the fluid passage and first end defines a first cross-sectional area and wherein the second end and the leading edge define a second cross-sectional area that is less than the first, wherein the fluid passage is a notch, and wherein the trailing edge includes a recessed portion, wherein the recessed portion defines the notch.

13. The one-way clutch of claim 12 , wherein a chamber is defined between an upper surface of the first end of the rocker and a portion of the pocket and wherein the chamber is configured to receive fluid via the fluid passage to bias the rocker to a disengaged position.

14. The one-way clutch of claim 12 , wherein the outer race comprises a blocking member disposed within the outer race and adjacent to the second end of the rocker and configured to block fluid from flowing along an upper surface of the second end of the rocker.

15. The one-way clutch of claim 14 , wherein the blocking member is a sensor.

16. The one-way clutch of claim 15 , wherein the inner race is rotatable in a rotational direction, wherein the outer race surrounds the inner race, and wherein the rocker is pivotally connected to the outer race and configured to pivot from a disengaged position to an engaged position.

17. The one-way clutch of claim 16 , wherein the inner race includes an axial strut pivotally connected to a recessed surface defined by the inner race and engaged with an exterior axial plate, and wherein the axial strut is configured to pivot to lock the inner race.

Assignees

• Ford Global Tech Llc

Inventors

• Zhang Dengfu
• Bird Norman Jerry

Classifications

• F16D41/125

  the pawl movement having an axial component · CPC title

• F16D41/069 Primary

  the intermediate members wedging by pivoting or rocking, e.g. sprags (F16D41/061 takes precedence) · CPC title

• F16D27/102

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

• F16D41/14 Primary

  the effective stroke of the pawl being adjustable · CPC title

• F16D11/16

  with clutching members movable otherwise than only axially (F16D11/02, F16D11/08 take precedence) · CPC title