| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an indoor latch lock such that no large force operates on a locking mechanism in spite of lever operation in locking. <P>SOLUTION: The indoor latch lock comprises: a hollow square core rod 4 which is rotated with levers 5, 6; a cam 12 which engages with the square core rod 4 to move linearly in an axial direction of the square core rod, and also always engages with a latch bolt 3 by an energizing member 16 in a leaving state to move the latch bolt 3 backward; a connection plate 11 which is rotatably inserted into the square core rod, and is fitted with a locking member 10 at one end and with a display board 9 at the other end; a locking rotary cam 15 which is rotatable by the locking member 10 and immovable in the axial direction; a recessed cam surface formation member 14 which is fixed to an end part of the square core rod 4 to face the locking rotary cam 15; and cam surfaces 15a, 14a which are formed on opposite surfaces of the locking rotary cam 15 and the recessed cam surface formation member 14 respectively and convert rotation of the locking rotary cam 15 into axial motion. <P>COPYRIGHT: (C)2013,JPO&INPIT |
