| 摘要 |
The present disclosure relates to a door lock. According to one aspect of the present disclosure, a push-and-pull type door lock comprises: covers installed in both sides of a door; first and second handles installed in the covers respectively, including first and second grip portions exposed to the outside of the cover, and first and second operation portions extending in a direction curved from the first and second grip portions and inserted into the cover; first and second coupling pins which couple the first and second operation portions to rotate about an axis in a direction perpendicular to a longitudinal direction; first and second movable cams provided between the first and second operation portions, have first and second insertion grooves to which an end of the first and second operation portions are inserted respectively, are provided to be overlapped up and down to rotate about one axis parallel to the first and second coupling pins in interlocking with the rotation of the first and second operation portions, and have first and second movable grooves provided as arc-shaped grooves on the same position as one side perpendicular to the first and second insertion grooves; and a latch bolt simultaneously inserted into the first and second movable grooves, has movable protrusions in shapes corresponding to the first and second movable grooves, and are operated by the rotation of any one of the first and second movable cams. |
