Vehicle door latch control device

Abstract

A vehicle door latch control device in which power from an electric actuator that is controlled by a control unit is transmitted, via a transmission means, to a ratchet that can engage with a latch that engages with a striker on a vehicle body and rotates, wherein a first switch detects whether the ratchet is in a ratchet engaging position, a second switch (120) detects that a transmission means (53) has moved so that the ratchet is in the ratchet engaging position by way of the actuated position of an actuating member (71) that constitutes a portion of the transmission means (53), and a control unit that controls the operation of an electric actuator (24) determines an abnormal state when the switching mode of the first switch is constant when the switching mode of the second switch (120) changes. By virtue of this, an abnormal state in which the latch is insufficiently engaged with the ratchet when closing a door can be detected.

Description

technical field [0001] The present invention relates to a latch control device for a vehicle door. The latch control device for a vehicle door includes a latch that engages with a striker on a vehicle body side as the door is turned toward the closing side. The ratchet moves between the ratchet engagement position and the ratchet release position, wherein, at the ratchet engagement position, the ratchet can be connected with the door in the fully closed state and the half-open state. The latch is engaged, and at the pawl release position, the engagement of the pawl with the latch is released; an electric actuator is exerted between the pawl engagement position and the pawl release position power to drive the pawl; a transmission mechanism, which is provided between the electric actuator and the between the pawls; and a control unit that controls the movement of the electric actuator. Background technique [0002] In Patent Document 1, there is known a latch control device ...

AI Technical Summary

Problems solved by technology

[0007] However, there is a possibility that when the pawl (claw) moves from the pawl releasing position to the pawl engaging position, the pawl (claw) may not reach the pawl completely due to malfunction caused by deterioration of the transmission mechanism or the pawl. In this case, the pawl and the latch are not engaged sufficiently when the door is closed, and the door cannot be kept completely closed. There is a possibility that the engagement between the pawl and the latch may be disengaged due to vibration. However, in the content disclosed in the above-mentioned Patent Document 1, such an abnormal state cannot be detected.

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