Reinforcing structure of a latch of an auxiliary lock

#1. Field of the Invention

#The present invention relates to a reinforcing structure of a latch of an auxiliary lock, wherein the housing of the latch of the auxiliary lock has a larger strength, and may withstand and support a larger external impact force.

#2. Description of the Related Art

#FIG. 1 is an exploded perspective view of a reinforcing structure of a latch of an auxiliary lock in accordance with the preferred embodiment of the present invention;

#FIG. 2 is a top plan cross-sectional assembly cross-sectional view of the reinforcing structure of a latch of an auxiliary lock as shown in FIG. 1; and

#FIG. 3 is a cross-sectional view of the reinforcing structure of a latch of an auxiliary lock taken along line 3—3 as shown in FIG. 2.

#Referring to the drawings and initially to FIG. 1, a reinforcing structure of a latch of an auxiliary lock in accordance with the preferred embodiment of the present invention comprises a housing 1, a lock tongue set 2, and at least one (preferably two) reinforcing plate 3.

#The housing 1 may be a conventional structure, and may be formed as a circular cylinder. One end of the housing 1 may be combined with the circular face plate 11. The housing 1 itself may also be combined with a rectangular face plate (not shown), so that the housing 1 may be fixed on the door plate at a proper position thereof, and may allow the lock tongue to extend outward from or retract into the face plate 11. The other end of the housing 1 may receive the lock tongue 21 therein, and has an end edge which is combined with the assembly plate 22 of the lock tongue set 2.

#The lock tongue set 2 may be a conventional structure, and includes a lock tongue 21 and an assembly plate 22. The assembly plate 22 slightly located at the rear end is combined with the housing 1, and the lock tongue 21 may be placed into the housing 1. The drive member 23 may draw the lock tongue 21 to act, such that the other end of the lock tongue 21 may extend outwardly from or retract into the face plate 11. The lock tongue 21 has at least one flat surface 24. Preferably, the lock tongue 21 has two symmetrically arranged concave portions 25.