Door member locking/unlocking apparatus

A apparatus for locking/unlocking a door member so rotatably hinged at its base end portion to the trunk portion of a vehicle as to have an axis of rotation in parallel with the widthwise direction of said vehicle, so that it may be opened/closed on the axis of rotation, comprising:

• a drive source for driving an output shaft rotationally;
• a latch rotatably hinged in a position to engage with a retaining portion for retaining said door member in a closed state and urged in a direction to disengage from said retaining portion;
• retaining means for retaining-and regulating said latch in a partially latched position and in a fully latched position;
• latching means for turning said latch, when the same is arranged in the partially latched position, from said position to the fully latched position;
• retention releasing means for releasing the retention of said latch in said fully latched position by said retaining means;
• a cam arranged to have an axis of rotation in parallel with that of said latch and rationally driven by the drive of said drive source for actuating said latching means and said retention releasing means;
• and
• wherein the body of said apparatus is located either in a center position of the transverse width at the leading end portion of said door member or in the body of said vehicle corresponding to said center position.

A door member locking/unlocking apparatus comprising:

• a drive source for driving an output shaft rotationally;
• a latch rotatably hinged in a position to engage with a retaining portion for retaining a door member in a closed state and urged in a direction to disengage from said retaining portion;
• retaining means for retaining and regulating said latch in a partially latched position and in a fully latched position;
• latching means for turning said latch, when the same is arranged in the partially latched position, from said position to the fully latched position;
• retention releasing means for releasing, the retention of said latch in said fully latched position by said retaining means;
• a cam arranged to have an axis of rotation in parallel with that of said latch and rotationally driven by the drive of said drive source for actuating said latching means and said retention releasing means;
• and
• a link mechanism including a rotary member for rotating on the basis of the rotational drive of said drive source, wherein said link mechanism transforms the rotational motion of said rotary member into a rocking motion of said cam to actuate said latching means and said retention releasing means, and wherein said link mechanism sets said latch to the fully latched position through said latching means when said rotary member reaches a position between a top dead center providing the rocking end position of said cam and a position immediately short of said top dead center.

A door member locking/unlocking apparatus comprising:

• a drive source for driving an output shaft rotationally forward and backward;
• a latch rotatably hinged in a position to engage with a retaining portion for retaining a door member in a closed state and urged in a direction to disengage from said retaining portion;
• retaining means for retaining and regulating said latch in a partially latched position and in a fully latched position;
• latching means for turning said latch, when the same is arranged in the partially latched position, from said position to the fully latched position;
• retention releasing means for releasing the retention of said latch in said fully latched position by said retaining means;
• a cam arranged to have an axis of rotation in parallel with that of said latch and rotationally driven by the drive of said drive source for actuating said latching means and said retention releasing means;
• a link mechanism including a rotary member for rocking on the basis of the forward and backward rotations of said output shaft of said drive source, wherein said link mechanism transmits the rocking motion of said rotary member as that of said cam to actuate said latching means and said retention releasing means;
• partially latched position detecting means for detecting that said latch is regulated to the partially latched position;
• fully latched position detecting means for detecting that said latch is regulated to the fully latched position;
• control means for causing said drive source to rotate forward thereby to actuate said latching means when said partially latched position detecting means detects that said latch is regulated to the partially latched position, and for causing said drive source to rotate backward thereby to stop any further rotation of said latch by the latching action of said latching means on the basis of the detection of said fully latched position detecting means when said latch reaches the fully latched position and is regulated to the same position.