Manual park release actuator assembly

Patent metadata

Field	Value
Publication number	US-9423019-B2
Application number	US-201414173184-A
Country	US
Kind code	B2
Filing date	Feb 5, 2014
Priority date	Feb 5, 2014
Publication date	Aug 23, 2016
Grant date	Aug 23, 2016

Abstract

A manual park release assembly includes a housing defining an inner cavity and an opening in communication with the inner cavity. The manual park release assembly further includes a locking device at least partially disposed in the inner cavity. The locking device is movable relative to the housing between a locked position and an unlocked position. Further, the manual park release actuator assembly includes a manual park release actuator coupled to the locking device. The manual park release actuator is movable relative to the housing between a first position and a second position when the locking device is in the unlocked position. The manual park release actuator includes an actuator body sized to be at least partially received in the opening and a plurality of mechanical stops coupled to the actuator body.

First claim

The invention claimed is:

1. A manual park release assembly for shifting a transmission from a Park mode to an Out-of-Park mode, the manual park release assembly comprising:
a housing defining an inner cavity and an opening in communication with the inner cavity, wherein the housing includes a housing body and at least one housing protrusion extending radially outward from the housing body, and the at least one housing protrusion is hollow so as to define a protrusion cavity;
a locking device at least partially disposed in the inner cavity, the locking device being rotatable relative to the housing about a longitudinal axis between a locked position and an unlocked position while remaining axially stationary relative to the housing along the longitudinal axis when rotating between the locked position and the unlocked position, wherein the locking device includes a device body and at least one compressible protrusion extending radially outward from the device body, and the at least one compressible protrusion is sized to be received in the protrusion cavity; and
a manual park release actuator coupled to the locking device, the manual park release actuator being movable relative to the housing between a first position and a second position when the locking device is in the unlocked position, wherein the manual park release actuator includes:
an actuator body sized to be at least partially received in the opening; and
a plurality of mechanical stops coupled to the actuator body, at least one of the mechanical stops being disposed outside the housing when the actuator body is at least partially disposed in the opening;

wherein, when the locking device is in the locked position, the at least one compressible protrusion is disposed in the protrusion cavity so as to preclude axial movement of the locking device relative to the housing along the longitudinal axis; and
wherein, when the locking device is in the unlocked position, the housing compresses the at least one compressible protrusion, and the compressible protrusion is disposed outside the protrusion cavity so as to allow axial movement of the locking device relative to the housing along the longitudinal axis.

2. The manual park release assembly of claim 1 , wherein the manual park release actuator is operatively coupled to the transmission such that moving the manual park release actuator relative to the housing from the first position to the second position causes the transmission to shift from the Park mode to the Out-of-Park mode.

3. The manual park release assembly of claim 1 , wherein the at least one mechanical stop is in contact with the housing when the manual park release actuator is in the second position.

4. The manual park release assembly of claim 1 , wherein the at least one mechanical stop has a width that is larger than a width of the opening.

5. The manual park release assembly of claim 1 , wherein the at least one mechanical stop is disposed in the inner cavity when the manual park release actuator is in the first position.

6. The manual park release assembly of claim 1 , wherein the housing body defines an inner housing surface and an outer housing surface opposite the inner housing surface, the inner housing surface defines the inner cavity, and the opening extends through the inner and outer housing surfaces.

7. The manual park release assembly of claim 6 , wherein the housing body defines a first housing end and a second housing end opposite the first housing end, and the opening is at the second housing end.

8. The manual park release assembly of claim 7 , wherein the second housing end defines an aperture leading to the inner cavity.

9. The manual park release assembly of claim 8 , wherein the aperture is in communication with the opening.

10. The manual park release assembly of claim 8 , wherein the opening is a slot and defines a closed end and an open end opposite the closed end, the open end is in communication with the aperture, the open end is at the second housing end, and the first housing end is closer to the closed end than to the open end.

11. The manual park release assembly of claim 8 , wherein the actuator body is a flexible cable and the at least one mechanical stop is a bead coupled to the flexible cable.

12. The manual park release assembly of claim 7 , further comprising a tube coupled to the housing at the first housing end, wherein the manual park release actuator is partially disposed in the tube.

13. The manual park release assembly of claim 6 , wherein the housing is made of a rigid material.

14. The manual park release assembly of claim 13 , wherein the at least one housing protrusion contacts the at least one compressible protrusion when the locking device is in the locked position, and the at least one compressible protrusion is configured to gradually withdraw from the housing protrusion as the locking device rotates from the locked position to the unlocked position.

15. A vehicle, comprising:
a vehicle body;
a transmission operatively coupled within the vehicle body, the transmission having a Park mode and an Out-of-Park mode;
a housing coupled to the vehicle body, wherein the housing defines an inner cavity and an opening in communication with the inner cavity, the housing includes a housing body and at least one housing protrusion extending radially outward from the housing body, and the at least one housing protrusion is hollow; and
a manual park release actuator at least partially disposed in the inner cavity, the manual park release actuator being movable relative to the housing between a first position and a second position, the manual park release actuator being operatively coupled to the transmission such that moving the manual park release actuator relative to the housing from the first position to the second position causes the transmission to shift from the Park mode to the Out-of-Park mode, wherein the manual park release actuator includes:
an actuator body sized to be at least partially received in the opening; and
a plurality of mechanical stops coupled to the actuator body, wherein at least one of the mechanical stops is disposed outside the housing when the actuator body is at least partially disposed in the opening;
a locking device at least partially disposed in the inner cavity, the locking device being rotatable relative to the housing about a longitudinal axis between a locked position and an unlocked position while remaining axially stationary relative to the housing along the longitudinal axis when rotating between the locked position and the unlocked position, and the locking device including a device body and at least one compressible protrusion extending radially outward from the device body;
wherein the manual park release actuator is coupled to the locking device, and the manual park release actuator is movable relative to the housing only when the locking device is in the unlocked position;
wherein, when the locking device is in the locked position, the at least one compressible protrusion is disposed inside the at least one housing protrusion so as to preclude axial movement of the locking device relative to the housing along the longitudinal axis; and
wherein, when the locking device is in the unlocked position, the housing compresses the at least one compressible protrusion, and the at least one compressible protrusion is disposed outside the at least one housing protrusion so as to allow axial movement of the locking device relative to the housing along the longitudinal axis.

16. The vehicle of claim 15 , wherein the vehicle body includes a hinge pillar, a

Assignees

• Gm Global Tech Operations Llc

Inventors

• Albertson Todd D
• Gott Ronald C
• Schumann Douglas W

Classifications

• Y10T74/20098

  Separate actuator to disengage restrictor · CPC title

• F16H59/10 Primary

  comprising levers · CPC title

• F16H63/3491 Primary

  Emergency release or engagement of parking locks or brakes · CPC title

• F16H61/22

  Locking {of the control input devices} (constructional features of locking or disabling mechanisms F16H63/34) · CPC title

• F16H63/34 Primary

  Locking or disabling mechanisms · CPC title