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A platform for research: civil engineering, architecture and urbanism
Improved multiple function door lock mechanism
The specification discloses alatch bolt assembly (47) for use with alock structure and a latch and lock structure incorporating such alatch bolt assembly (47), the latch bolt assembly (47) having a latch bolt (104) adapted to be withdrawn into or extended from alatch bolt casing (102), a fixed support housing (91, 92) mounting an operating mechanism for the latch bolt (104), the fixed support housing (91, 92) defining a cam track (136, 135, 137, 138), the operating mechanism for the latch bolt (104) including a crank arm (45) pivotally mounted within the fixed housing (91, 92) a cam track follower (133) retained for movement with the crank arm (45) but capable of limited movement relative thereto, and link connector means (130) connecting the cam track follower (133) to the latch bolt (104); the cam track (136, 135, 137, 138) defining at least three spaced positions being a first rearward position (138) indicative of a withdrawn position of the latch bolt (104), a second forward position (136) indicative of a dead locking position of the latch bolt (104) and a third intermediate position (135, 137) indicative of a latching position of the latch bolt (104).
Improved multiple function door lock mechanism
The specification discloses alatch bolt assembly (47) for use with alock structure and a latch and lock structure incorporating such alatch bolt assembly (47), the latch bolt assembly (47) having a latch bolt (104) adapted to be withdrawn into or extended from alatch bolt casing (102), a fixed support housing (91, 92) mounting an operating mechanism for the latch bolt (104), the fixed support housing (91, 92) defining a cam track (136, 135, 137, 138), the operating mechanism for the latch bolt (104) including a crank arm (45) pivotally mounted within the fixed housing (91, 92) a cam track follower (133) retained for movement with the crank arm (45) but capable of limited movement relative thereto, and link connector means (130) connecting the cam track follower (133) to the latch bolt (104); the cam track (136, 135, 137, 138) defining at least three spaced positions being a first rearward position (138) indicative of a withdrawn position of the latch bolt (104), a second forward position (136) indicative of a dead locking position of the latch bolt (104) and a third intermediate position (135, 137) indicative of a latching position of the latch bolt (104).
Improved multiple function door lock mechanism
HE ZHANGTING (author)
2021-03-04
Patent
Electronic Resource
English
IPC:
E05B
LOCKS
,
Schlösser