ROTARY POWER TRANSMISSION DEVICE WITH ACTUATOR RETENTION FEATURE

Abstract

A rotary power transmission device includes a device housing, a clutch, an actuator and a retainer. The device housing has an interior in which multiple components are received for rotation. The clutch is received within the device housing and has a clutch ring selectively engageable with one of said multiple components. The actuator has a coil and a plunger driven for movement along an axis and relative to the clutch. And the retainer has a first portion that engages the device housing and a second portion that radially overlaps the coil and limits axial movement of the coil relative to the device housing.

Description

Claims

1. A rotary power transmission device, comprising: a device housing having an interior in which multiple components are received for rotation;a clutch received within the device housing and having a clutch ring selectively engageable with one of said multiple components;an actuator having a coil and a plunger driven for movement along an axis and relative to the clutch; anda retainer having a first portion that engages the device housing and a second portion that radially overlaps the coil and limits axial movement of the coil relative to the device housing.

2. The device of claim 1 wherein the coil includes a coil housing and a wire coil within the coil housing, and wherein the first portion extends axially and is received over a portion of the device housing, and the second portion extends from the sidewall and overlaps part of the coil housing.

3. The device of claim 2 wherein the first portion of the retainer is press-fit onto an outer surface of the device housing.

4. The device of claim 2 wherein the first portion extends axially and the second portion extends radially from the sidewall.

5. The device of claim 2 wherein the coil housing has an inboard end adjacent to the device housing, and the coil housing has an outboard end opposite and axially spaced from the inboard end, and wherein the retainer overlaps part of the coil housing between the inboard end and the outboard end, and the retainer does not extend axially beyond the outboard end.

6. The device of claim 5 wherein the coil housing includes a flange that extends radially outwardly and is located between the inboard end and the outboard end, and the flange includes a first face received against the device housing and the flange includes a second face engaged by the second portion of the retainer.

7. The device of claim 1 wherein the coil has a coil housing and a wire coil within the coil housing, and wherein the first portion of the retainer includes a flange coupled to the device housing and the second portion of the retainer includes a sidewall that extends from the flange and overlaps part of the coil housing.

8. The device of claim 7 wherein the device housing includes a groove and wherein the flange is press-fit into the groove with a friction fit between one surface of the flange and a surface defining the groove.

9. The device of claim 8 wherein, when the plunger is driven for movement, the plunger slides along an annular surface of the device housing, and the groove is formed radially inwardly spaced from the annular surface.

10. The device of claim 8 wherein the flange extends axially into the slot, and the flange has a radially inner surface and an opposite radially outer surface with at least one of the radially inner surface and the radially outer surface frictionally engaged with the device housing within the slot.

11. The device of claim 1 wherein the coil has a coil housing and a wire coil within the coil housing, and wherein the retainer includes multiple inwardly extending flanges that define the second portion of the retainer, where each flange radially overlaps the coil housing and traps a portion of the coil housing between the flange and the device housing.

12. The device of claim 11 wherein the first portion of the retainer is defined by a main body from which the flanges extend radially inwardly.

13. The device of claim 12 wherein the device housing includes a groove that is open to a radially outer surface of the device housing and that extends radially into the device housing, and wherein the main body is received within the groove.

14. The device of claim 13 wherein the coil housing is located within the device housing radially inwardly of the groove, and the flanges extend inwardly from the main body and radially overlap part of the coil housing.

15. The device of claim 14 wherein the device housing includes a plurality of circumferentially spaced apart skirts, and wherein the groove is formed in multiple skirts, and the flanges are received circumferentially between adjacent skirts.

16. The device of claim 13 wherein the main body includes a first end and a second end circumferentially spaced apart from the first end, with a gap between the first end and the second end.

17. A rotary power transmission device, comprising: a device housing having an interior in which multiple components are received for rotation;a clutch ring received within the device housing and selectively engageable with one of said multiple components;an actuator having a coil housing, a coil within the coil housing, and a plunger driven for movement along an axis and relative to the clutch ring to move the clutch ring relative to the device housing; anda retainer having a first portion that engages the device housing and a second portion that extends from the first portion radially toward the axis, wherein the second portion radially overlaps the coil housing and limits axial movement of the coil housing relative to the device housing.

18. The device of claim 17 wherein the first portion extends axially and is engaged with part of the device housing.

19. The device of claim 17 wherein the first portion is received within a groove in the device housing.