Charge cord locking/unlocking actuator

• US 9,279,276 B2
• Filed: 08/07/2013
• Issued: 03/08/2016
• Est. Priority Date: 08/10/2012
• Status: Active Grant

• Current Assignee: GM Global Technology Operations LLC (General Motors Company)
• Original Assignee: GM Global Technology Operations LLC (General Motors Company)
• Inventors: Arabia, Frank J. Jr., Konchan, Jeffrey L., Sorbie, Scott A., Taylor, Michelle Zirngibl
• Primary Examiner(s): Rossoshek, Helen
• Application Number:
  US13/961,595
• Publication Number:
  US 20140042964A1
• Time in Patent Office: 944 Days
• Field of Search: 320/107, 320/109, 439/133, 439/304, 439/347
• US Class Current: 1/1
• CPC Class Codes: B60L 2270/32 of electricity
• CPC Class Codes: B60L 2270/34 of parts
• CPC Class Codes: B60L 53/16 Connectors, e.g. plugs or sockets, specially adapted for charging electric vehicles
• CPC Class Codes: E05B 83/00 Vehicle locks specially adapted for particular types of wing or vehicle locks specially adapted for bicycles E05B71/00; locking arrangements for non-fixed vehicle roofs B60J7/185; latching means for sideboards or tailgates of open load compartments B62D33/037
• CPC Class Codes: Y02T 10/70 Energy storage systems for electromobility, e.g. batteries
• CPC Class Codes: Y02T 10/7072 Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
• CPC Class Codes: Y02T 90/14 Plug-in electric vehicles
• CPC Class Codes: Y10T 70/5889 For automotive vehicles

Abstract

A locking mechanism secures a plug of a charging cord in a charging receptacle of a vehicle and includes an actuator, a linear-actuated cam connected thereto and driven along a linear travel path thereby (the cam defining a slot therein positioned at an angle relative to the path), and a locking arm pivotally mounted at a pivot point to a component disposed adjacent the arm. The arm includes a follower pin that engages the slot. The arm pivots about the point to move between locked and unlocked positions in response to movement of the cam along the path. A housing of the vehicle includes the receptacle, a charging interface connected with the plug to allow current to flow from a charging unit to a system of batteries of the vehicle during a charging operation, and the mechanism.

Claims

1. A locking mechanism for securing a plug of a charging cord in a charging receptacle of a vehicle, the receptacle configured to receive a charging cord from a first direction, the locking mechanism comprising:

an actuator including an actuating pin movable along a linear travel path in a second direction the second direction being perpendicular to the first direction;

a linear-actuated cam connected to and driven along the linear travel path by the actuating pin and defining a cam slot formed therein positioned at an angle relative to the linear travel path; and

a locking arm pivotally mounted at a pivot point to a component disposed adjacent to the locking arm and including a follower pin that engages the cam slot and a lock bolt, the locking arm pivot having an axis extending parallel to the first direction, wherein the locking arm is configured to pivot about the pivot point to move between a locked position and an unlocked position in response to movement of the linear-actuated cam along the linear travel path and, during the pivoting, the lock bolt moves from a first position to a second position, the lock bolt being positioned in and at least partially through an opening in the receptacle to engage the charging cord.

2. The locking mechanism of claim 1, wherein the actuator includes a DC motor that is configured to move a system of gears to move the actuating pin along the linear travel path.

3. The locking mechanism of claim 1, wherein the linear-actuated cam includes a first end and a second end, the actuating pin is connected to the first end, and the cam slot is disposed on a face of the linear-actuated cam and extends at the angle relative to the linear travel path on the face.

4. The locking mechanism of claim 1, wherein the cam slot defines different segments extending at respective angles relative to the linear travel path different than each other to vary output of the linear-actuated cam.

5. The locking mechanism of claim 1, wherein the cam slot is linear or curved to vary output of the linear-actuated cam.

6. The locking mechanism of claim 1, wherein the locking arm includes a first end, a second end, and a pivot pin positioned along a length of the locking arm proximate to the first end of the locking arm, the lock bolt extending from proximate the second end of the locking arm.

7. The locking mechanism of claim 1, wherein the plug of the charging cord is connected to a charging interface in the receptacle and receives the lock bolt to secure the plug against removal from the receptacle in the locked position or allows withdrawal of the lock bolt to unsecure the plug in the unlocked position.

8. The locking mechanism of claim 1, wherein, during movement of the linear-actuated cam along the linear travel path, the cam slot moves relative to the follower pin.

9. The locking mechanism of claim 1, wherein the cam slot is angled relative to the linear travel path and sidewalls of the cam slot are configured to apply a force to the follower pin that causes the locking arm to pivot about the pivot pin toward the locked or unlocked position.

10. The locking mechanism of claim 1, wherein the cam slot is formed in the linear-actuated cam at an angle that provides a predetermined load in at least one of a locking and unlocking direction.

11. A housing of a vehicle including a system of batteries that receive a charge from an external power source, the housing comprising:

a receptacle adapted to receive a charging cord from a first direction, the charging cord being coupled to the external power source;

a charging interface configured to connect with the charging cord to allow current to flow from the external power source to the system of batteries during a charging operation; and

a locking mechanism arranged in the housing to secure the charging cord in the receptacle, the locking mechanism including;

an actuator including an actuating pin movable along a linear travel path in a second direction the second direction being perpendicular to the first direction;

a linear-actuated cam connected to and driven along the linear travel path by the actuating pin and defining a cam slot formed therein positioned at an angle relative to the linear travel path; and

a locking arm pivotally mounted at a pivot point to a component disposed adjacent to the locking arm and including a follower pin that engages the cam slot and a lock bolt, wherein the locking arm is configured to pivot about the pivot point to move between a locked position and an unlocked position in response to movement of the linear-actuated cam along the linear travel path and, during the pivoting, the lock bolt moves from a first position to a second position, the lock bolt being positioned in and at least partially through an opening in the receptacle to engage the charging cord.

12. The housing of claim 11, wherein the actuator includes a DC motor that is configured to move a system of gears to move the actuating pin along the linear travel path.

13. The housing of claim 11, wherein the linear-actuated cam includes a first end and a second end, the actuating pin is connected to the first end, and the cam slot is disposed on a face of the linear-actuated cam and extends at the angle relative to the linear travel path on the face.

14. The housing of claim 11, wherein the cam slot defines different segments extending at respective angles relative to the linear travel path different than each other to vary output of the linear-actuated cam.

15. The housing of claim 11, wherein the cam slot is linear or curved to vary output of the linear-actuated cam.

16. The housing of claim 11, wherein the locking arm includes a first end, a second end, and a pivot pin positioned along a length of the locking arm proximate to the first end of the locking arm, the lock bolt extending from proximate the second end of the locking arm.

17. The housing of claim 11, wherein the charging cord is connected to a charging interface in the receptacle and receives the lock bolt to secure the charging cord against removal from the receptacle in the locked position or allows withdrawal of the lock bolt to unsecure the charging cord in the unlocked position.

18. The housing of claim 11, wherein, during movement of the linear-actuated cam along the linear travel path, the cam slot moves relative to the follower pin.

19. The housing of claim 11, wherein the cam slot is angled relative to the linear travel path and sidewalls of the cam slot are configured to apply a force to the follower pin that causes the locking arm to pivot about the pivot pin toward the locked or unlocked position.

20. The housing of claim 11, wherein the cam slot is formed in the linear-actuated cam at an angle that provides a predetermined load in at least one of a locking and unlocking direction.