Folded seal retention plate with thrust surface

Patent metadata

Field	Value
Publication number	US-9534641-B2
Application number	US-201514629719-A
Country	US
Kind code	B2
Filing date	Feb 24, 2015
Priority date	Feb 28, 2014
Publication date	Jan 3, 2017
Grant date	Jan 3, 2017

Abstract

A seal retention plate for a torque converter, the plate comprising: an annular body portion having a first surface; a second surface opposite the first surface; an interior portion having at least one first hole; at least one radially outer tab extending from the interior portion and folded to contact the second surface so as to provide a thrust surface; and a center opening.

First claim

What I claim is:

1. A seal retention plate for a torque converter, the plate comprising:
an annular body portion having:
a first surface;
a second surface opposite the first surface;
an interior portion having at least one first hole;
at least one radially outer tab extending from the interior portion and folded to contact the second surface so as to provide a thrust surface; and
a center opening.

2. The seal retention plate of claim 1 , wherein the at least one radially outer tab includes a second hole, wherein the second hole is aligned with the first hole and wherein the diameter of the second hole is greater than the diameter of the first hole.

3. The seal retention plate of claim 2 , wherein the first hole is arranged for receiving a rivet and wherein the second hole is arranged for receiving a rivet head.

4. The seal retention plate of claim 1 , wherein the at least one tab includes a base having a first width, radially outward tapered sides, and a tip having a second width, and wherein the first width is greater than the second width.

5. The seal retention plate of claim 1 , wherein the interior portion includes a first radial portion, a slant portion, and a second radial portion.

6. The seal retention plate of claim 5 , wherein the first radial portion and the second radial portion are arranged in parallel displacement to each other, and having the slant portion located therebetween.

7. A piston seal assembly comprising:
a piston including a recess on a first inner radial portion;
a seal retention plate having:
an interior portion having a first thickness;
a plurality of radially outer tabs having a second thickness extending from the interior portion, each tab having a base and radially outward tapered sides, each tab folded along the base so as to contact the interior portion and to provide a thrust portion having a total thickness; and
a center opening;

at least one fastener for fixedly attaching the piston to the seal retention plate; and
a seal located between the piston recess and the interior portion of the seal retention plate.

8. The piston seal assembly of claim 7 , wherein the first thickness is equal to the second thickness.

9. The piston seal assembly of claim 7 , wherein the seal is arranged for sealing engagement with a transmission input shaft, and wherein the piston is arranged to be slidably supported on the transmission input shaft.

10. The piston seal assembly of claim 7 , wherein the interior portion includes a first hole and the outer tab includes a second hole, wherein the second hole is aligned with the first hole and wherein the diameter of the second hole is greater than the diameter of the first hole.

11. The piston seal assembly of claim 10 , wherein the fastener is a rivet including a rivet head, and wherein the first hole is arranged for receiving the rivet and wherein the second hole is arranged for receiving the rivet head; and wherein the rivet head has a third thickness, wherein the third thickness is at most equal to the second thickness.

12. The piston seal assembly of claim 7 wherein the interior portion includes a first radial portion, a slant portion, and a second radial portion.

13. The piston seal assembly of claim 12 wherein the first radial portion and the second radial portion are arranged in parallel displacement to each other having the slant portion located therebetween; and wherein the second radial portion cooperates with the piston recess to prevent axial displacement of the seal.

14. A torque converter assembly comprising:
a seal arranged for sealing engagement with a transmission input shaft;
a piston arranged to be slidably supported on the transmission input shaft and including a recess for the seal;
a flange;
the seal retention plate of claim 1 wherein the first surface faces the piston and the thrust surface faces the flange; and,
a fastener for fixedly attaching the piston to the seal retention plate.

15. A torque converter assembly assembly comprising:
a piston including a recess on a first inner radial portion;
a seal retention plate having:
an interior portion having a first thickness;
a plurality of radially outer tabs having a second thickness extending from the interior portion, each tab having a base and radially outward tapered sides, each tab folded along the base so as to contact the interior portion and to provide a thrust portion having a total thickness; and
a center opening;

at least one fastener for fixedly attaching the piston to the seal retention plate;
a flange facing the thrust portion; and,
a seal located between the piston recess and the interior portion of the seal retention plate.

16. The torque converter assembly of claim 15 wherein the seal is arranged for sealing engagement with a transmission input shaft, and wherein the piston is arranged to be slidably supported on the transmission input shaft.

17. The torque converter assembly of claim 15 wherein the interior portion includes a first hole and the outer tab includes a second hole, wherein the second hole is aligned with the first hole and wherein the diameter of the second hole is greater than the diameter of the first hole.

18. The torque converter assembly of claim 17 wherein the fastener is a rivet including a rivet head, and wherein the first hole is arranged for receiving the rivet and wherein the second hole is arranged for receiving the rivet head, and wherein the rivet head has a third thickness, wherein the third thickness is at most equal to the second thickness.

19. The torque converter assembly of claim 15 wherein the seal retention plate includes scallops located on opposite sides of the outer tabs, and where the scallops extend at least partially into the interior portion.

20. The torque converter assembly of claim 15 wherein the interior portion includes a first radial portion, a slant portion, and a second radial portion, and wherein the first radial portion and the second radial portion are arranged in parallel displacement to each other, and having the slant portion located therebetween, and wherein the second radial portion cooperates with the piston recess to prevent axial displacement of the seal.

Assignees

• Schaeffler Technologies Ag

Inventors

• Cerreta Joshua David

Classifications

• F16H45/02 Primary

  with mechanical clutches for bridging a fluid gearing of the hydrokinetic type (control of torque converter lock-up clutches F16H61/14) · CPC title

• F16H2045/0215

  Details of oil circulation · CPC title

• F16H2045/0278

  comprising only two co-acting friction surfaces · CPC title

• F16J15/16

  between relatively-moving surfaces (F16J15/50, F16J15/52 take precedence; bellows pistons F16J3/06; piston-rings or ring sealings of similar construction F16J9/00) · CPC title

• F16H2045/0263

  the damper comprising a pendulum · CPC title