Patent ID: 8950791
Filing Date: 2015-02-10
Classification: E05B,Y10T

Abstract:
1. A door lock device comprising: a latch mechanism detachably engaging a striker and having an operation receiving portion for releasing an engaged state; a link being movable between an unlock position capable of engaging with the operation receiving portion of the latch mechanism and capable of releasing the engaged state of the striker, and a lock position incapable of engaging with the operation receiving portion and incapable of releasing the engaged state of the striker; a lock plate positioning the link at the unlock position and the lock position, the lock plate having a first end engaging with the link; a knob lever coupled to a lock knob provided in a vehicle inner side of a door and engaged with a second end of the lock plate, the second end being opposite relative to the first end of the lock plate, the knob lever actuating the lock plate to move the link to the lock position or the unlock position; and an inner lever coupled to an inner handle provided in the vehicle inner side of the door and engaged with the link, the inner lever releasing the engaged state of the striker by the latch mechanism via the link in a state that the link is moved at the unlock position, wherein the knob lever is provided with an engagement receiving portion which is configured to engage with the inner lever in a rotation direction in a state where the link is moved to the lock position, and the inner lever is provided with an engaging portion, wherein the engaging portion is configured to be capable of engaging with the engagement receiving portion of the knob lever in a rotation direction to move the knob lever so that the link is moved to the unlock position via the lock plate, in a state where the link is moved to the lock position, and is configured to be incapable of engaging with the engagement receiving portion of the knob lever, in a state where the link is moved to the unlock position, wherein the knob lever is provided with a cam receiving portion engaged with a cam groove of a cam member rotated by a drive motor so that rotation of the cam member by the drive motor allows the knob lever to rotate, and wherein a case is provided so that the inner lever, the knob lever and the lock plate are operably supported on a first shaft, a second shaft and a third shaft, respectively, which are parallel to each other and formed on surfaces of the case that lie in a first plane formed perpendicular to a second plane on which the latch mechanism is disposed, and wherein the inner lever, the link and the knob lever are arranged adjacent to one another in a lateral direction of the case, in such a manner that the inner lever is positioned between the link and the knob lever and that the engaging portion of the inner lever protrudes from the first shaft toward the engagement receiving portion of the knob lever and is capable of engaging with the engagement receiving portion of the knob lever in a rotation direction of the inner lever.