This invention relates to a door latch system. The door latch system includes: a housing; a latch pivotally and rotatably installed in the housing; a main locking member slidingly installed in the housing for locking the latch; a sub-locking member slidingly installed in the housing and disposed in one side of the main locking member; a hook pivotally and movably installed in any one of the main locking member and the sub-locking member; a stopping threshold formed in the other one (wherein the hook is not installed) of the main locking member and the sub-locking member; and a locking plate slidingly installed in the housing for pivotally moving the hook, wherein the main locking member and the sub-locking member are sliding together when the hook is held by the stopping threshold by the sliding of the locking plate, and only the sub-locking member is sliding when the hook is separated from the stopping threshold by the sliding of the locking plate, so that even if the door lever is being pulled when the door is being locked, the unnecessary force is not transferred to the other components such as a latch, a main locking member, and the like.

A vehicle-door opening and closing device includes: a latch unit configured to keep a vehicle door in a half latched state or a fully latched state; a power close mechanism configured to displace the vehicle door from the half latched state to the fully latched state; a power release mechanism configured to release the fully latched state to bring the vehicle door to an openable state; and a drive gear configured to be driven by a motor. The power release mechanism is configured to be actuated with a drive force of the drive gear. A return switch configured to be switched upon driving in a predetermined drive range sufficient to complete actuation of the power release mechanism is placed near the drive gear. The motor is configured to return the drive gear based on a signal from the return switch.

A door latch device includes: a first position switch and a second position switch, each including a first contact hole, a second contact hole, and a common contact hole; a common pin configured to be electrically conducted to the common contact hole of the first position switch and the first contact hole of the second position switch by being inserted therein; a first signal pin configured to be electrically conducted to the first contact hole of the first position switch by being inserted therein; and a second signal pin configured to be electrically conducted to the common contact of the second position switch by being inserted therein, wherein the first position switch and the second position switch are configured to perform a switch operation at a same timing of an operation of a predetermined operation detection target.

A door arrangement contains a door for a room with a door leaf, a wall portion of a wall structure laterally adjacent to the door, and a locking arrangement for the door. The locking arrangement includes a locking device in the door leaf with a blocking element, which can be moved in and contrary to a blocking direction in order to block or release the door, and a lock actuator in the wall portion with a first mechanical actuating element, which is unconnected to the blocking element in order to shift the blocking element, by mechanical contact pressure, from the movement position into the blocking position and vice versa. A control and information system contains the door arrangement, a control device for the lock actuator, a human/machine interface, and a communication interface for an authorized body different from the user.

A door arrangement contains a door for a room with a door leaf, a wall portion of a wall structure laterally adjacent to the door, and a locking arrangement for the door. The locking arrangement includes a locking device in the door leaf with a blocking element, which can be moved in and contrary to a blocking direction in order to block or release the door, and a lock actuator in the wall portion with a first mechanical actuating element, which is unconnected to the blocking element in order to shift the blocking element, by mechanical contact pressure, from the movement position into the blocking position and vice versa. A control and information system contains the door arrangement, a control device for the lock actuator, a human/machine interface, and a communication interface for an authorized body different from the user.

A door latch system is provided for a motor vehicle having a front door having a forward portion configured for sealed engagement with an A-pillar and a rear door having a rearward portion configured for sealed engagement with a C-pillar, the front and rear doors being configured for movement relative to a vehicle body of the motor vehicle to bring respective rearward and forward portions into sealed engagement with one another to close off a B-pillarless opening bounded by the vehicle body. The door latch system includes a retractable striker assembly and/or retractable ratchet assembly attached to one of the front and rear doors and includes a respective retractable striker and/or retractable ratchet movable between extended and retracted positions.

A door latch system is provided for a motor vehicle having a front door having a forward portion configured for sealed engagement with an A-pillar and a rear door having a rearward portion configured for sealed engagement with a C-pillar, the front and rear doors being configured for movement relative to a vehicle body of the motor vehicle to bring respective rearward and forward portions into sealed engagement with one another to close off a B-pillarless opening bounded by the vehicle body. The door latch system includes a retractable striker assembly and/or retractable ratchet assembly attached to one of the front and rear doors and includes a respective retractable striker and/or retractable ratchet movable between extended and retracted positions.

A motor vehicle latch, in particular a motor vehicle door latch, is equipped with a locking mechanism consisting substantially of a catch and a pawl. An electromotive drive for a coupling lever is further provided as part of a power locking unit. In addition, a first operating lever is provided, wherein in the “unlocked” position of the power locking unit, said first operating lever works on the coupling lever that is then engaged in order to open the locking mechanism, and wherein in the “locked” position of the power locking unit, said first operating lever performs an idle stroke relative to the coupling lever that is then disengaged. According to the invention, the electromotive drive works with a linear thrust member on the coupling lever, wherein the linear thrust member is held in at least one position with the aid of a blocking levers).

A latch assembly, including: a manual release lever rotationally mounted to the latch assembly for movement about a first axis, the manual release lever being operably coupled to an inside release handle; a release link pivotally mounted to the manual release lever for movement about a second axis; a child lock lever rotationally mounted to the latch assembly for movement about a third axis; a gear rotationally mounted to the latch assembly for movement about a fourth axis, the gear being rotated by a motor that drives a worm that meshingly engages teeth of the gear; a child lock switch positioned to detect a position of the child lock lever; a gear home switch positioned to detect the position of the gear; and wherein the gear has a first cam surface configured to contact a cam surface of the child lock lever when the gear is rotated to a locked position and contact of the first cam surface with the cam surface of the child lock lever will rotate the child lock lever about the third axis and rotation of the child lock lever about the third axis will cause the release link to pivot about the second axis.

A latch assembly, including: a manual release lever rotationally mounted to the latch assembly for movement about a first axis, the manual release lever being operably coupled to an inside release handle; a release link pivotally mounted to the manual release lever for movement about a second axis; a child lock lever rotationally mounted to the latch assembly for movement about a third axis; a gear rotationally mounted to the latch assembly for movement about a fourth axis, the gear being rotated by a motor that drives a worm that meshingly engages teeth of the gear; a child lock switch positioned to detect a position of the child lock lever; a gear home switch positioned to detect the position of the gear; and wherein the gear has a first cam surface configured to contact a cam surface of the child lock lever when the gear is rotated to a locked position and contact of the first cam surface with the cam surface of the child lock lever will rotate the child lock lever about the third axis and rotation of the child lock lever about the third axis will cause the release link to pivot about the second axis.