Door lock

Abstract

This product is a door lock that is attached to a door while being installed in a lock case. As shown in the reference cross-sectional view, this product includes a cylinder, a body, a cover, a collar, a spring, etc. In this product, the collar is configured to be movable relative to the cylinder, body, and cover, and is pressed toward the rear side by the spring. Furthermore, as shown in Reference Figure 1 showing the state of use or Reference Figure 2 showing the state of use, this product is configured so that the outer edge of the collar comes into contact with the surface of the door, allowing the position of the collar to be changed depending on the thickness of the door.

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