CN2288247Y - Simple anti-theft cylinder door lock - Google Patents

Abstract

The utility model relates to a simple anti-theft spring door lock which can be widely applied to family life of people. Because the utility model discloses a unique spring bolt and spring bolt structure for single spring bolt has the theftproof function that other two spring bolts are the same promptly, has simple structure, convenient operation, low structure, characteristics such as error-free theftproof operation.

Description

Simple and easy anti-theft billiards door lock

The utility model belongs to life haberdashery and hardware class.

Pin tumbler lock is a kind of hardware products that generally uses in people's family daily life, and along with the raising of people's living standard, the use of pin tumbler lock is more and more large in number and widely distributed.

Pin tumbler lock is various informative on the market now, and what have does not possess inside and outside anti-theft feature (promptly need not key all can open from the indoor and outdoor door), though have have an inside and outside anti-theft feature, but complex structure, the technological requirement height need be used particulate metal material sometimes, therefore, price is more expensive.

The purpose of this utility model provides a kind of ordinary metallic material that can use to make to society, family, simple in structure, and has inside and outside anti-theft feature, low-cost pin tumbler lock.

The utility model structural representation is seen accompanying drawing, and 1 is dead bolt among the figure, and 2 is the lock housing body, and 3 is key operated device, 4 open safety plate in anti-, 5 drive button in personal, and 6 is the dead bolt spring, and 7 is preventing key external-open stop button, 8 is dead bolt bolt inclined-plane, and 9 is the dead bolt bolt, and 10 is dead bolt bolt dead bolt hole.

The utility model accompanying drawings function is as follows: when being in locking state as figure the utility model.Because the common spring Door-lock bolt is shaped as the inclined-plane, from crack between a door and its frame, use the insertion of sheet class instrument if any the burglar, squeeze and disclose dead bolt, by the effect to dead bolt inclined-plane power, in the dead bolt withdrawal lock housing body, door is opened, and the burglar is with regard in the energy inlet chamber.And the utility model dead bolt (1) is a rectangle, so the burglar unblanks outdoor can't disclosing from crack between a door and its frame with said method.

Moreover, if the burglar by in other approach inlet chamber, and need open the door when locking out away and since be equipped with on the utility model with same anti-of other pin tumbler lock in open safety plate (4), so drive button (5) from indoor rotation in personal, door lock can not be opened; Preventing key external-open stop button (7) being housed simultaneously, so, can not open at outdoor lock with key.

The utility model when inserting key breakdown device (3) at outdoor key, rotates and opens as the common spring door lock, makes dead bolt (1) withdraw from from dead bolt bolt (9), and door is promptly opened.Under dead bolt spring (6) effect, dead bolt (1) stretches out from lock housing body (2), is in the state of often stretching.And when locking a door, owing to have the dead bolt bolt inclined-plane (8) of relative motion above the dead bolt bolt (9) with dead bolt (1), so under the effect of the pulling force of closing the door, rectangle dead bolt (1) can be gone up stressed retreating on the dead bolt bolt inclined-plane (8) of dead bolt bolt (9), when dead bolt (1) moved to dead bolt bolt rectangle dead bolt hole (10) position, dead bolt (1) stretched out automatically and enters in the dead bolt bolt rectangle dead bolt hole (10) under the effect of dead bolt spring (6), door promptly shuts, and enters anti-theft state.

The dead bolt bolt (9) that the utility model technical characterstic mainly is to have unique rectangle dead bolt (1) and has dead bolt bolt inclined-plane (8).Use antitheft operation identical with the common spring door lock, and be different from other have with the door lock of the identical anti-theft feature of the utility model the double lock tongue structure that must have and close and must use key to insert key operated device rotation theft-proof bolt behind the door to enter the dead bolt bolt, can enter the operation of anti-theft state.

Compared with the prior art the utility model has characteristics such as simple in structure, easy to operate, cheap, errorless antitheft operation.

Claims (2)

1. the simple and easy anti-theft billiards door lock of the utility model, it is characterized in that: dead bolt (1) is a rectangle.

2. according to claim 1, its feature also is: dead bolt bolt (9) is provided with the dead bolt bolt inclined-plane (9) of the effect of contacting with dead bolt (1).

Images