Anti-pinch door lock

• US 6,145,918 A
• Filed: 10/08/1999
• Issued: 11/14/2000
• Est. Priority Date: 10/08/1999
• Status: Expired due to Fees

• Current Assignee: Meritor Light Vehicle Systems, LLC
• Original Assignee: Meritor Light Vehicle Systems, LLC
• Inventors: Wilbanks, Joseph Allen II
• Primary Examiner(s): Pedder, Dennis H.
• Assistant Examiner(s): MURRAY, MICKKI D
• Application Number:
  US09/415,411
• Time in Patent Office: 403 Days
• Field of Search: 296/146.4, 296/146.1, 296/223, 292/216, 292/DIG. 43, 292/46, 292/65, 116/28 R, 116/45, 116/60, 49/25, 49/26, 49/27, 49/28
• US Class Current: 296/146.1
• CPC Class Codes: E05B 77/14 Specially controlled locking actions in case of open doors or in case of doors moved from an open to a closed position, e.g. lock-out prevention or self-cancelling
• CPC Class Codes: E05C 17/006 with means for detecting obstacles outside the doors
• CPC Class Codes: E05F 15/00 Power-operated mechanisms for wings motor-operated accessories in locks for completing closing or initiating opening of a wing E05B17/00
• CPC Class Codes: E05F 15/43 responsive to disruption of energy beams, e.g. light or sound
• CPC Class Codes: E05F 5/025 specially adapted for vehicle doors
• CPC Class Codes: E05Y 2201/224 Stops
• CPC Class Codes: E05Y 2201/246 by motors, magnets, springs or weights
• CPC Class Codes: E05Y 2201/462 Electromagnets
• CPC Class Codes: E05Y 2400/822 Light emitters, e.g. LEDs
• CPC Class Codes: E05Y 2800/252 the elements functioning only in case of emergency
• CPC Class Codes: E05Y 2900/531 Doors

Abstract

A method and apparatus for preventing the capturing and pinching of a user within the path of a vehicle door includes a sensor for determining the presence of an obstruction when the door is being closed. When an obstruction is detected, a mechanism is actuated which prevents movement of the door to its fully latched position. In this way, any resultant pinching is minimized.

Claims

1. A method of protecting an object in the path of the door, comprising the steps of:

1) providing a sensor for determining the presence of an object in the path of a door, and providing an apparatus which is selectively actuated to prevent complete closing of said door;

2) sensing the presence of an object in the path of said vehicle door; and

3) preventing complete closing of said door when an object is detected at step 2, said door including a latch which is selectively driven to lock by an element on a vehicle frame, and preventing movement of said lock latch to a latched position upon the detection of an object in step 2.

2. A method as set forth in claim 1, wherein said element is an element extending outwardly of a vehicle frame contacts a claw on a door, and said claw pivoting to a latched position to capture said element, said preventing of step 3) including stopping movement of said element to said latched position.

3. A method as set forth in claim 2, wherein said claw is moved to a latched position prior to said element contacting said claw.

4. A method as set forth in claim 3, wherein a separate blocking member moves into the path of said element, preventing said element from contacting said latch and moving said latch to said latched position.

5. A method is set forth in claim 1, wherein said sensing of step 2) occurs when the door is moving.

6. A method is set forth in claim 1, wherein the sensing of step 2) occurs whenever the door is open.

7. A method as set forth in claim 1, wherein a warning signal is actuated when an obstruction is detected.

8. A door anti-pinch apparatus comprising:

a sensor for sensing an obstruction in the path of a vehicle door;

a structure for preventing said vehicle door from being fully closed when said sensor determines that an object is in the path of said door; and

a latching mechanism latching said vehicle door within a frame of a vehicle and said structure preventing latching of said latching mechanism upon the detection of an object, said latch including a claw member which pivots to capture a locking element on a vehicle frame, said claw member being prevented from pivoting to a latch position by said structure upon the detection of an obstruction.

9. An apparatus as set forth in claim 8, wherein a mechanism drives said claw to a blocking position when an obstruction is detected, and said element on said frame not being able to drive said claw to pivot to its latched position.

10. An apparatus as set forth in claim 8, wherein a separate mechanism is driven into the path of said element such that said element cannot drive said claw to a latched position upon the detection of an obstruction.

11. An apparatus as set forth in claim 8, wherein said sensing mechanism is an element which sends a signal outwardly into the path of said door and receives the reflected signals to determine the presence of an obstruction.

12. An apparatus as set forth in claim 11, wherein said sensor is a laser.

13. An apparatus as set forth in claim 8 wherein a warning signal is provided which is actuated upon the detection of an obstruction.

14. An apparatus as set forth in claim 8, wherein a control senses when a vehicle door is opened, and actuates said sensor when said vehicle door is open.

15. An apparatus as set forth in claim 8, wherein a control detects when said vehicle door is moving, and actuates said sensor when said vehicle door is moving to a closed position.