Latch device for trunk lid of vehicle

Patent metadata

Field	Value
Publication number	US-2016201362-A1
Application number	US-201514979660-A
Country	US
Kind code	A1
Filing date	Dec 28, 2015
Priority date	Jan 8, 2015
Publication date	Jul 14, 2016
Grant date	—

Abstract

The latch device for the trunk lid of the vehicle includes an electric open lever that causes a ratchet to withdraw from a latch when the electric open lever rotates, and a release actuator that rotates the electric open lever. An output gear that rotates by driving force of the release actuator is provided near the electric open lever, a pair of a first cam projection and a second cam projection with phases shifted from each other by 180 degrees is provided at the output gear, and the output gear is configured such that when the output gear rotates by 180 degrees, the first cam projection abuts against and rotates the electric open lever, and rotation of the output gear is blocked by the second cam projection abutting against the rotated electric open lever.

First claim

What is claimed is:

1 . A latch device for a trunk lid of a vehicle, the latch device comprising:
a latch configured to engage with a striker; a ratchet configured to engage with the latch and to hold an engaged state between the latch and the striker; an electric open lever configured to cause the ratchet to withdraw from the latch when the electric open lever rotates; and a release actuator configured to rotate the electric open lever, wherein an output gear configured to rotate by driving force of the release actuator is provided near the electric open lever, a pair of a first cam projection and a second cam projection with phases shifted from each other by 180 degrees is provided in the output gear, and the output gear is configured such that the first cam projection abuts against the electric open lever and rotates the electric open lever when the output gear rotates by 180 degrees, and rotation of the output gear is blocked by the second cam projection abutting against the rotated electric open lever.

2 . A latch device for the trunk lid of the vehicle, the latch device comprising:
a latch configured to engage with a striker; a ratchet configured to engage with the latch and to hold an engaged state between the latch and the striker; an electric open lever configured to cause the ratchet to withdraw from the latch; and a release actuator configured to rotate the electric open lever, wherein an output gear configured to rotate by driving force of the release actuator is provided near the electric open lever, a pair of a first cam projection and a second cam projection with phases shifted from each other by 180 degrees is provided in the output gear, a follower corner portion and a stopper corner portion configured to be each displaceable to a position facing on a rotational track of the first cam projection and second cam projection and to a position off the rotational track are provided at the electric open lever, the latch device is configured such that the electric open lever is rotated and the ratchet is withdrawn from the latch, by the follower corner portion at the position facing on the rotational track abutting against one of the first cam projection and second cam projection when the output gear rotates, and being pushed out to the position off the rotational track when or before the output gear rotates by 180 degrees, the latch device is further configured such that the stopper corner portion at the position off the rotational track before the output gear rotates is displaced to the position facing on the rotational track by the rotation of the electric open lever when the ratchet is withdrawn from the latch by the rotation of the electric open lever, and the latch device is configured such that the stopper corner portion displaced to the position facing on the rotational track abuts against the other one of the first cam projection and second cam projection and blocks rotation of the output gear upon and after the abutment, when the output gear rotates by 180 degrees.

3 . The latch device for the trunk lid of the vehicle according to claim 1 , wherein the latch device is configured such that a rotation-blocked state of the output gear by the electric open lever is released by the electric open lever rotating in conjunction with displacement upon engagement of the ratchet with the latch due to resilience of a ratchet spring by door closure.

4 . The latch device for the trunk lid of the vehicle according to claim 1 , wherein the output gear is directly held at a position immediately after the blockage due to reduction resistance of the release actuator side even if the release actuator is turned OFF after the rotation of the output gear is blocked by the abutment of the output gear against the electric open lever.

5 . The latch device for the trunk lid of the vehicle according to claim 1 , wherein the output gear is freely rotatably supported about a center shaft, and a manual open lever, which causes the ratchet to withdraw from the latch when the manual open lever is rotated by a manual door opening unit is supported about the center shaft.

6 . The latch device for the trunk lid of the vehicle according to claim 1 , wherein the output gear is freely rotatably supported about a center shaft, and a manual open lever, which causes the ratchet to withdraw from the latch when the manual open lever is rotated by operation on an emergency operation knob provided with an emergency symbol made of a phosphorescent material, is supported about the center shaft.

7 . The latch device for the trunk lid of the vehicle according to claim 6 , wherein each on a front side of the base member, the output gear and the manual open lever are supported about the center shaft, the electric open lever is supported about a support shaft, the latch is supported about a latch shaft, and the ratchet is supported about a ratchet shaft, and the emergency operation knob is coupled to the manual open lever from a reverse side of the base member via an emergency operation hole of the base member.

8 . The latch device for the trunk lid of the vehicle according to claim 2 , wherein the latch device is configured such that a rotation-blocked state of the output gear by the electric open lever is released by the electric open lever rotating in conjunction with displacement upon engagement of the ratchet with the latch due to resilience of a ratchet spring by door closure.

9 . The latch device for the trunk lid of the vehicle according to claim 2 , wherein the output gear is directly held at a position immediately after the blockage due to reduction resistance of the release actuator side even if the release actuator is turned OFF after the rotation of the output gear is blocked by the abutment of the output gear against the electric open lever.

10 . The latch device for the trunk lid of the vehicle according to claim 2 , wherein the output gear is freely rotatably supported about a center shaft, and a manual open lever, which causes the ratchet to withdraw from the latch when the manual open lever is rotated by a manual door opening unit is supported about the center shaft.

11 . The latch device for the trunk lid of the vehicle according to claim 2 , wherein the output gear is freely rotatably supported about a center shaft, and a manual open lever, which causes the ratchet to withdraw from the latch when the manual open lever is rotated by operation on an emergency operation knob provided with an emergency symbol made of a phosphorescent material, is supported about the center shaft.

12 . The latch device for the trunk lid of the vehicle according to claim 11 , wherein each on a front side of the base member, the output gear and the manual open lever are supported about the center shaft, the electric open lever is supported about a support shaft, the latch is supported about a latch shaft, and the ratchet is supported about a ratchet shaft, and the emergency operation knob is coupled to the manual open lever from a reverse side of the base member via an emergency operation hole of the base member.

Assignees

• Mitsui Kinzoku Act Corp

Inventors

• Mizuno Takaaki
• Mizumoto Nao
• Ito Tomokazu

Classifications

• E05B81/66

  the bolt position, i.e. the latching status · CPC title

• E05F11/00

  Man-operated mechanisms for operating wings, including those which also operate the fastening (connecting mechanisms for a plurality of wings E05F17/00) · CPC title

• E05F15/603

  using rotary electromotors · CPC title

• E05C3/12

  with latching action (devices in which the securing part is formed or merely carried by a spring and moves only by distortion of the spring, e.g. snaps, E05C19/06; tilt-plate latches E05C19/007) · CPC title

• B62D25/12

  Parts or details thereof (locks E05B, {E05B83/16; devices for holding open E05C17/00, e.g. while carrying oversize objects E05C17/042}; hinges E05D; counterbalancing means E05F; {checks, stops, buffers E05F5/00; } springs, {e.g. pneumatic springs} F16F) · CPC title