| 摘要 |
A differential linkage attachment of handles includes a first handle ring and a second handle ring placed on right and left sides, respectively, and set in a rectangular dead bolt shifting block independently. An end of the second handle ring is encircled with a first slanted latch bolt shifting plate, and an end of the first handle ring is encircled with a second slanted latch bolt shifting plate. All of the five parts turn around on a center axis. When the second handle ring turns forward or clockwise, the rectangular dead bolt shifting block or the first slanted latch bolt shifting plate is linked to turn around on the center axis independently, and when the first handle ring turns clockwise, the rectangular dead bolt shifting block or the second slanted latch bolt shifting plate is linked to turn around on the center axis independently. When the second handle ring or the first handle ring turns backward or counter-clockwise, only the rectangular dead bolt shifting block is linked, so that the rectangular dead bolt extends out to lock the door. Front and rear handles operate the rectangular dead bolt and the slanted latch bolt independently.
|
