Double pull latch for closure panel such as hood
In an aspect, a latch for a closure panel for a vehicle is provided, and includes a ratchet, pawl, release lever, and extension member. The ratchet is movable between a primary closed position, secondary closed position and open position. The pawl is movable between a primary locking position, secondary locking position and unlocking position. The release lever is movable between home and actuated positions. When the pawl is in the primary locking position the release lever has a selected amount of reach for driving the pawl to the secondary locking position during movement of the release lever to the actuated position. When the pawl is in the secondary locking position the extension member is movable to extend the reach of the release lever to drive the pawl from the secondary locking position to the unlocked position during movement of the release lever from the home position to the actuated position.
1. A latch for a closure panel for a vehicle, comprising:
a ratchet rotatable between a primary closed position, a secondary closed position and an open position, wherein the ratchet is biased towards the open position;
a pawl rotatable between a primary locking position, a secondary locking position and an unlocking position, the pawl having a bias towards the primary locking position, in the primary closed position the pawl having a pawl locking surface for engaging a primary locking surface on the ratchet and holding the ratchet in the primary closed position and in the secondary closed position the pawl having the pawl locking surface for engaging a secondary locking surface on the ratchet holding the ratchet in the secondary closed position, the pawl having a release arm for engagement with a release lever mechanism;
the release lever mechanism configured for connecting to an actuation handle, the release lever mechanism including a release lever;
wherein pull of the actuation handle, when connected to the release lever mechanism, actuates the release lever mechanism a first time such that the release lever moves from a home position to an actuated position and drives the release lever mechanism to directly engage the pawl via the release arm and drive the pawl against the bias to the secondary locking position causing the ratchet to rotate until the pawl locking surface engages the secondary locking surface and another pull of the actuation handle, when connected to the release lever mechanism, actuates the release lever mechanism a second time and drives the release lever mechanism to directly engage the pawl via the release arm and drive the pawl against said bias to the unlocking position causing the ratchet to move from the secondary closed position to the open position; and
wherein the release lever mechanism includes a double pull lever moveable between an inoperative position in which the double pull lever is disengaged from the release arm upon said pull the first time and an operative position in which the double pull lever directly engages the pawl via the release arm upon said another pull, and when the pawl is driven from the primary locking position to the secondary locking position by the release lever mechanism the double pull lever is in the inoperative position and inhibited by the release arm from moving to the operative position, and when the pawl is in the secondary locking position movement of the release lever mechanism the second time towards the actuated position of the release lever brings the double pull lever to the operative position, wherein the release lever returns to the home position between said pull and said another pull.
2. A latch as claimed in claim 1 , wherein the release lever mechanism includes a double pull lever, and said another pull of the actuation handle actuates the release lever mechanism the second time to drive the double pull lever to directly engage the release arm.
3. A latch as claimed in claim 1 , wherein the double pull lever is pivotally mounted.
4. A latch as claimed in claim 1 further comprising a housing that includes a double pull lever engagement surface that inhibits the double pull lever from leaving the inoperative position when the release lever is in the home position, wherein the release lever is biased towards the home position.
5. A latch as claimed in claim 1 further comprising a housing that includes a release lever limit surface that determines the actuated position for the release lever and inhibits movement of the release lever therepast.
6. A latch as claimed in claim 1 further comprising a pawl lockout member that is movable between a lockout position and a non-lockout position, wherein in the lockout position, the pawl lockout member holds the pawl in the unlocking position, and wherein in the non-lockout position the pawl lockout member permits movement of the pawl to the primary locking position.
7. A latch as claimed in claim 6 , wherein, when the pawl is in the primary locking position and the secondary locking position, the pawl lockout member is inhibited from leaving the non-lockout position.
8. A latch as claimed in claim 7 , wherein the pawl lockout member is moved from the non-lockout position to the lockout position during movement of the pawl from the secondary locking position to the unlocking position.
9. A latch as claimed in claim 8 , wherein the pawl lockout member is moved from the lockout position to the non-lockout position during movement of the ratchet from the secondary closed position to the open position.
10. A latch as claimed in claim 9 , wherein the pawl lockout member is inhibited from leaving the non-lockout position when the ratchet is in the open position.
11. A latch as claimed in claim 7 , wherein the pawl lockout member is moved from the non-lockout position to the lockout position by a pawl lockout member biasing member during movement of the pawl from the secondary locking position to the unlocking position, and wherein the pawl lockout member is moved from the lockout position to the non-lockout position by the ratchet during movement of the ratchet from the secondary closed position to the open position.
12. A latch as claimed in claim 6 , wherein, when the pawl is in the primary locking position and the secondary locking position, the pawl lockout member is inhibited by the pawl from leaving the non-lockout position.
13. A latch as claimed claim 1 , wherein when the pawl is in the primary locking position the release lever mechanism has a selected amount of reach for driving the pawl from the primary locking position to the secondary locking position during movement of the release lever from the home position to the actuated position, and wherein when the pawl is in the secondary locking position the double pull lever is movable to extend the reach of the release lever to drive the pawl from the secondary locking position to the unlocking position during movement of the release lever from the home position to the actuated position, wherein the release lever is biased towards the home position, wherein the release lever returns to the home position between said pull and said another pull.