CN2139156Y - Double-safety door lock using two keys - Google Patents

Abstract

The utility model discloses a door lock locked and unlocked through two keys. The utility model is provided with two lock bodies respectively fixed with two cylinder lock cores; a gear rack is controlled through one cylinder lock core, and braking claw is controlled through the other cylinder lock core to conduct the double-safety locking. The utility model has the advantages of simple structure, easy fabrication, convenient operation, beautiful appearance, and good safety performance. The door lock locked and unlocked through two keys is an ideal anti-prying anti-theft door lock for the single door and the double doors of a storehouse, a garage, a truck box, a family, etc.

Description

Double-safety door lock using two keys

The utility model relates to a kind of dual fail-safe door lock.

Door lock at present commonly used adopts one key rotation lock core stirred locking mechanism and open, and its safety performance is poor.Utilize " cylinder lock synchronously " of two or more lock cylinders, its each lock core is all wanted an affixed shifting block gear, the mesomerism gear engagement is arranged, its complex structure between the gear.

The purpose of this utility model is to provide a kind of two lock cylinders that utilize, and controls the dual fail-safe door lock of two insurance institutions respectively.

The purpose of this utility model is achieved in that two lock bodies fix two lock core bodies respectively, an adjusting washer (disk) is all arranged in the middle of it, each fixes a slide block lock cylinder one end in two lock core bodies, one end of one of them slide block inserts in the gear axis hole, tooth bar engagement in gear and the lock body, one end of another slide block inserts in the pawl axis hole, and the pawl top snaps in a certain tooth of tooth bar, and the shape of two axis holes is similar to the cross sectional shape of slide block; There is tooth bar to import and export between two lock bodies.

The utility model is compared with existing door lock and had the following advantages: simple in structure, easily manufactured, the scope of application is wide, and safety performance is good.

The utility model is further described in conjunction with the accompanying drawings.

Fig. 1 is the structural representation of conbined public or double key dual fail-safe door lock;

Fig. 2 is that the A-A of conbined public or double key dual fail-safe door lock is to sectional view.

Right lock body 1 usefulness bolt 14 pin core bodys 13, adjusting washer (disk) 15 is housed in the middle of it, lock cylinder 12 is housed in the lock core body 13, the offside of lock core 12 keyholes fixedly slide block 3 of steady pin 17, slide block 3 inserts in the axis hole of gear 2, its axis hole shape is similar to the slide block cross sectional shape, and gear 2 is engaged on the tooth bar 4.The both sides of right lock body have tooth bar to import and export.Left side lock body 7 usefulness bolts 9 pin core bodys 10, adjusting washer (disk) 8 is housed in the middle of it, lock cylinder 11 is housed in the lock core body 10, the offside of lock core 11 keyholes fixedly slide block 5 of steady pin 16, slide block 5 inserts in the axis hole of pawl 6, its axis hole shape is similar to the cross sectional shape of slide block 5, and the top of pawl is stuck in certain tooth of tooth bar.Left side lock body one side has tooth bar to import and export.

When opening this lock, insert lock cylinder 11 with a key earlier, the clockwise direction rotation drives slide block 5 and stirs pawl 6, makes it throw off tooth bar 4.Insert lock cylinder 12 with another key, rotation counterclockwise drives slide block 3 handsetting gears 2, the gear plectrum carry-over bar, and tooth bar withdraws from left lock body.Left lock body is separated with right lock body.With the rotation of lock core 12 clockwise directions, make tooth bar enter levo form during locking.Pawl is snapped in a certain tooth of tooth bar lock core 11 rotation counterclockwise with another key, transfer to key, finish the locking task.

Claims (1)

1, a kind of door lock of forming by lock body, lock core body, lock cylinder, gear, tooth bar, it is characterized in that: two lock bodies are fixed two lock core bodies respectively, an adjusting washer (disk) is all arranged in the middle of it, each fixes a slide block lock cylinder in two lock core bodies, one end of one of them slide block inserts in the gear axis hole, tooth bar engagement in gear and the lock body, one end of another slide block inserts in the pawl axis hole, the pawl top snaps in the tooth bar tooth, the shape of two axis holes is similar to the slide block cross sectional shape, has tooth bar to import and export between two lock bodies.