CN2043651U

CN2043651U - Theft-defence safety door lock

Info

Publication number: CN2043651U
Application number: CN 88220501
Authority: CN
Inventors: 王庆云; 张生华
Original assignee: Xilu Development Department Of Electromechanical Measuring And Controlling Techn
Current assignee: Xilu Development Department Of Electromechanical Measuring And Controlling Techn
Priority date: 1988-12-03
Filing date: 1988-12-03
Publication date: 1989-08-30

Abstract

The utility model relates to a theft-defence safety door lock with a novel structure, which is composed of a lock body arranged on a door and a locking pin arranged on a door frame. The utility model is characterized in that a thumb wheel for enduring destructive force is arranged on the lock core in the lock body, and a lock hook is controlled by the thumb wheel. The structure of the existing door lock that the lock hook is controlled by the lock core is altered, thereby, the intensity of the lock is strengthened, and the lock is not easy to be pried or cracked. The utility model, which has the advantages of safety, small size, simple structure and convenience, can be widely used for doors, cabinets and boxes.

Description

Theft-defence safety door lock

The utility model is the invention that is used for antitheft safety door latch of a kind of lock, particularly a kind of novel structure.

Safety door latch of the present utility model is applied in that various need are antitheft, the rolling door, sliding door and the various door that require safety, case, cashier's office in a shop.It is engineering goods, belongs to electronic product.

Known technology before the utility model is the normal osmanthus lock that uses of present people, door lock etc., is by lock body (10), is installed in the lock core (20) in the lock body and is subjected to the executing agency that the lock core direct manipulation controls (30, as latch hook etc.) composition.Because lock core direct manipulation control executing agency's (as latch hook), thereby,, thereby ruin lock more easily with the lock core damage when executing agency's (as latch hook) when bearing destructive power.So present existing lock bears destructive power only about 200 kilograms, intensity is low, pried open or break by the people easily, and along with science and technology development, the raising of people's living standard, people have higher requirement to lock.

The purpose of this utility model is exactly that the existing intensity that is latched in is low at present in order to solve, and shortcomings such as easily being pried open or break by the people is invented.

Anti-theft security door lock of the present utility model, form by lock body (1) and lock pin (2), lock core (3) is installed in lock body (1), the executing agency that is handled control by lock core (3) is installed on lock body (1), it is characterized in that on lock core (3), having installed the special thumb wheel that bears destructive power (4), the bolster (5) that bears thumb wheel (4) load and the fixing locating shaft of executing agency's scope of activities (6) have been installed on the bottom lock body of lock core (3), thumb wheel (4) is handled control executing agency, executing agency be by be fixed on lock shaft (7) lock body (1) go up rotating latch hook (8) and an end be stuck in bolster (5) upward the other end be stuck in long-armed torsion spring (9) formation that has gone up reset response of latch hook (8).The crucial thumb wheel (4) of part on lock core of this lock is by constituting with the fixing eccentric cam of turning cylinder with the lock core location.Latch hook (8) is to be made of a slab with the fixing JiongZi Xing structure with long-armed, galianconism of lock shaft (7).

Safety door latch of the present utility model, lock body is installed on the door by bolster (5), locating shaft (6), lock shaft (7), and lock pin is installed on the doorframe.

When door was closed, lock pin (2) hit the latch hook (8) of the lock of entering, and latch hook rotates, and lock pin is hooked, and thumb wheel inserts, because lock core is located, thumb wheel inserts, will lock locked.When turning the key in the lock, the rotational positioning lock core will be handled thumb wheel and transfer to, and latch hook (8) resets under the effect of reduction torsion spring (4), and door is opened.Above-mentioned action be the rectilinear motion with door to be converted into latch hook be the circular motion in the center of circle with the lock shaft, utilize the lock core location, thumb wheel directly bears external force and controls latch hook, forms mechanical self-latching.

Safety door latch of the present utility model, when being damaged power owing to executing agency, lock core is directly not stressed, thereby the existing lock raising of lock strength ratio makes to lock to be difficult for being pried open or breaking more than 3 times.So this product safety is reliable, volume is little, and is simple in structure, easy for installation.

Description of drawings:

Fig. 1: prior art Lock structure schematic diagram

(10) lock body, (20) lock core (30) executing agency

Fig. 2: anti-theft security door lock arrangement figure

(1) lock body (2) lock pin (3) lock core (4) thumb wheel (5) bolster (6) locating shaft (7) lock shaft (8) latch hook (9) torsion spring

Embodiment as shown in Figure 2

Constitute by lock body (1), lock pin (2), lock core (3), thumb wheel (4), bolster (5), locating shaft (6), lock shaft (7), latch hook (8), torsion spring (9).

Claims

1, a kind ofly is used for antitheft safety door latch, form by lock body (1) and lock pin (2), lock core (3) is installed in lock body, executing agency's (as locking structure etc.) by lock core (3) control is installed on lock body, it is characterized in that on lock core (3), having installed the thumb wheel (4) that bears destructive power, the bolster (5) that bears thumb wheel (4) load and the fixing locating shaft of executing agency's scope of activities (6) have been installed, thumb wheel (4) control executing agency on the bottom lock body of lock core (3).

2, safety door latch according to claim 1 is characterized in that executing agency is stuck in the long-armed torsion spring (9) of having gone up reset response that the other end on the bolster is stuck in latch hook (8) and constitutes by be fixed on rotating latch hook (8) and an end on the lock body with lock shaft (7).

3, safety door latch according to claim 1 and 2, altogether feature is that to pull out wheel (4) be being made of an eccentric cam of fixing with turning cylinder with the lock core location.

4, safety door latch according to claim 1 and 2 is characterized in that latch hook (8) is to be made of a slab with the fixing JiongZi Xing structure with long-armed, galianconism of lock shaft (7).

5, safety door latch according to claim 3 is characterized in that latch hook (8) is to be made of a slab with the fixing JiongZi Xing structure with long-armed, galianconism of lock shaft (7).