DOOR LATCH DEVICE FOR VEHICLE

摘要

A door latch device for vehicle includes a pawl which is engageable with a latch which rotates in a door closing direction by engaging with a striker, and a pawl return spring elastically biases the pawl towards a position at which the pawl is engaged with the latch. The pawl return spring comprises a coiled spring portion and an extending arm. The coiled spring portion has the coil center at a position which is spaced from the rotation center of the pawl; and has the coil center at a position which is spaced from the rotation center of the pawl. The extending arm extends along the abutted surface of the pawl from one of end portions of the coiled spring portion. The extending arm is configured so as to abut against a shear plane which is spaced from a fracture surface having relatively high surface roughness in the abutted surface.

主权项

1. A door latch device for vehicle, comprising:
a latch configured to be rotated in a door closing direction by engaging with a striker; a pawl rotatable between a first position and a second position about a supporting shaft, said pawl preventing said latch from rotating in a door opening direction by engaging with said latch at said first position, said pawl releasing a prevention of a rotation of said latch in said door opening direction by releasing an engagement with said latch at said second position; and a pawl return spring abutting against an abutted surface provided on said pawl so as to elastically biases said pawl towards said first position; wherein, said pawl return spring comprising: a coiled spring portion formed in a coiled state, said coiled spring portion having the coil center at a position which is spaced from the rotation center of said pawl; and an extending arm extending along said abutted surface of said pawl from one of end portions of said coiled spring portion, said extending arm being configured so as to abut against a second area which is spaced from a first area having relatively high surface roughness in said abutted surface of said pawl.