CN2133640Y - Safety door lock with revolving tongue - Google Patents

Abstract

Disclosed is a safety door lock with a rotating tongue, which is a novel door lock. In the utility model, the telescoping structure of a traditional lock tongue is changed to a rotating structure in which a pin tongue [5] rotates around a pin shaft [8] by following the open of a door or the close of the door. The manufacturing cost of the utility model whose safety performance is even stronger than that of the existing safety door lock with any structure is similar to that of an ordinary door lock, and the accident possibility which is caused by no reverse locking because of carelessness or other reasons in actual living is eliminated. Even though badly installed, the utility model can be kept reliable and flexible.

Description

Safety door lock with revolving tongue

The utility model relates to a kind of door lock, the door lock that particularly a kind of dead bolt rotates when opening.

Existing door lock, the safety that has is not good enough, and the cost that has is higher, and has alignment error or door to be out of shape, all to exist and open inflexible shortcoming slightly, the reason of searching to the bottom, existing door lock all is the dead bolt stretching structure that adopts.

Motion mode when task of the present utility model is fundamentally to change the dead bolt unlatching, thus reach high safety, cheap, open purpose flexibly.

Task of the present utility model is finished as follows: open by key or indoor handle, along with the opening of door, dead bolt rotate and withdraw from the tongue card, and keep the state that can rotate; When locking a door, as long as door one is with gently, dead bolt and tongue card are collided, dead bolt rotates also and stretches into naturally in the tongue card, and the state that dead bolt return, maintenance can not be rotated reaches the purpose of locking a door.

Manufacturing cost of the present utility model is equally matched with common door lock, and its safety performance even be better than the insurance lock of existing any structure---got rid of in the real life because of general idea or other reasons and do not locked the possibility that causes accident, and slightly alignment error still can be guaranteed its reliability and the flexibility of use.

Below in conjunction with accompanying drawing the utility model is described in further detail.

Accompanying drawing is that the utility model is in a kind of structural representation when locking a door state.

With reference to accompanying drawing, the utility model is made up of lock housing ［ 1 ］, handle ［ 2 ］, lock core jack ［ 3 ］, tongue card ［ 4 ］, several big parts of dead bolt ［ 5 ］ equally.The utility model also can be made into the indoor key of stopping ［ 9 ］ that has, the dual fail-safe structure of outdoor available key back locking.Unlatching stops key ［ 9 ］, turning handle ［ 2 ］ or with key rotation lock core jack ［ 3 ］, uvula ［ 6 ］ withdraws from the seam ［ 7 ］ of dead bolt ［ 5 ］, dead bolt this moment ［ 5 ］ can rotate around bearing pin ［ 8 ］, need only light handle ［ 2 ］ or touch the door of key operated one side, pintle hook lock ［ 5 ］ rotates, door is when being opened, and dead bolt ［ 5 ］ withdraws from tongue card ［ 4 ］; When locking a door, along with closing of door, the direction that dead bolt ［ 5 ］ rotates is opposite when opening the door, and uvula ［ 6 ］ slips in the seam ［ 7 ］ of dead bolt ［ 5 ］.

Claims (1)

1, a kind of door lock that is made of lock housing [1], handle [2], lock core jack [3], tongue card [4], dead bolt [5] is characterized in that along with the unlatching of door or closes that dead bolt [5] is the rotational structure of rotating around lock shaft [8].