Vehicle closure latch

• US 5,649,726 A
• Filed: 05/21/1996
• Issued: 07/22/1997
• Est. Priority Date: 05/21/1996
• Status: Expired due to Fees

• Current Assignee: Inteva Products LLC (Renco Group Incorporated)
• Original Assignee: General Motors Corporation (General Motors Company)
• Inventors: Carter, Eluid David, Rogers, Lloyd Walker Jr., Johnson, Joseph Michael, Ciavaglia, Michael Antonio
• Primary Examiner(s): Lindsey, Rodney M.
• Application Number:
  US08/652,016
• Time in Patent Office: 427 Days
• Field of Search: 292/201, 292/216, 292/DIG. 23, 292/DIG. 27
• US Class Current: 292/201
• CPC Class Codes: E05B 81/06 using rotary motors
• CPC Class Codes: E05B 81/16 operating on locking elements for locking or unlocking action
• CPC Class Codes: E05B 81/34 of geared transmissions
• CPC Class Codes: E05B 81/44 in the form of grooves
• CPC Class Codes: E05B 81/90 Manual override in case of power failure
• CPC Class Codes: E05B 85/02 Lock casings
• CPC Class Codes: Y10S 292/23 Vehicle door latches
• CPC Class Codes: Y10T 292/1047 Closure
• CPC Class Codes: Y10T 292/1082 Motor

Abstract

A vehicle closure latch is provided which includes an actuator with a first wheel selectively reversibly powered to rotate along a first axis; a second wheel coaxial with the first wheel, the second wheel having a first face directed toward the first wheel; at least one arcuate slot formed on one of the wheels with a center of rotation generally co-terminus with the first axis, the slot having first and second ends spaced from one another and a pin connected on the other wheel that the arcuate slot is formed on, the pin being captured by the slot between the ends of the slot and being able to move therebetween; the second wheel further including a cam profile on a second face opposite the first face, the cam profile encapturing the stud of a manually operated locking lever, wherein rotation of the second wheel in a first circular direction will cause the manually operated locking lever to pivot moving the locking lever to the locking position and rotational movement of the second wheel in a second circular direction opposite the first circular direction will cause the manually operated locking to pivot moving the locking lever to the unlocked position, and wherein the manually operated locking lever can be moved between the locked and unlocked positions, without any substantial movement of the first wheel.

Claims

1. A vehicle closure latch having latched and unlatched states, the closure latch having an unlatching lever for changing the closure latch to the unlatched state from the latched state, the closure latch further including a locking lever having an unlocked position relative to the unlatching lever to define an unlocked condition of the closure latch, and the locking lever having a locked position preventing the unlatching lever from establishing the unlatched state of the closure latch, the closure latch further including a manually operated locking lever for selectively moving the locking lever between the locked and unlocked positions, the manually operated locking lever having a stud connected thereto, and wherein the closure latch includes a powered actuator to move the locking lever between the locked and unlocked positions, the actuator including:

a first wheel selectively reversibly powered to rotate about a first axis;

a second wheel coaxial with the first wheel, the second wheel having a first face directed toward the first wheel;

at least one arcuate slot formed on one of the wheels with a center of rotation generally co-terminus with the first axis, the slot having first and second ends spaced from one another and a pin connected on the other wheel that the arcuate slot is formed on, the pin being captured by the slot between the ends of the slot and being able to move therebetween;

the second wheel further including a cam profile on a second face opposite the first face, the cam profile encapturing the stud of the manually operated locking lever, wherein rotation of the second wheel in a first circular direction will cause the manually operated locking lever to pivot moving the locking lever to the locking position and rotational movement of the second wheel in a second circular direction opposite the first circular direction will cause the manually operated locking lever to pivot moving the locking lever to the unlocked position, and wherein the manually operated locking lever can be operated to move the locking lever between the locked and unlocked positions, without any substantial movement of the first wheel.

2. A vehicle closure latch as described in claim 1, wherein the pin is connected to the first face of the second wheel.

3. A vehicle closure latch as described in claim 1, wherein there are two arcuate slots on one of the wheels and two pins connected on the other wheel, and each pin captured in one of the two arcuate slots.

4. A vehicle closure latch as described in claim 1, wherein the cam profile has a stall position to stall rotation of the first wheel when the closure latch is placed in the latched state by the actuator.

5. A vehicle closure latch as described in claim 1, wherein the cam profile has a position to stall the first wheel when the actuator is moving the locking lever to the unlocked position.

6. A vehicle closure latch as described in claim 1, wherein a common curvilinear path is defined by the cam profile and is used for moving the locking lever from the locked to the unlocked position and the unlocked position to the locked position, and wherein the cam profile can automatically sequence itself if the stud is positioned in an intermediate position in the cam profile.

7. A vehicle closure latch as described in claim 1 having a motor connected with a worm gear which is meshed with a geared surface of the first wheel.

8. A vehicle closure latch as described in claim 1 wherein the manually operated locking lever stud when the locking lever is in the locked position is radially closer to the first axis than when the locking lever is in the unlocked position.

9. A vehicle closure latch as described in claim 1, wherein the manually operated locking lever stud when the locking lever is in the unlocked position is radially further to the first axis than when the locking lever is in the locked position.