CN2313018Y - Bullet lock preventing from abnormal unlocking - Google Patents

Abstract

The utility model relates to a cylinder lock having a cross-shaped keyhole, which comprises a lock body, a lock core, a cylinder, and a spring. One corresponding slot of the keyhole is used as a cylinder slot, and the other corresponding slot is used as another cylinder slot or a guide slot; at least one cylinder hole preventing abnormal unlocking is arranged at the position deviating from the cylinder slot along the direction of vertically crossing with the shaft line of a lock hole, and the cylinder and the spring are arranged in the cylinder hole. When the distance between the front end of the cylinder and the axle center of the lock core is smaller than 0.5 mm and a matched key is inserted in the determined position, the front end of the cylinder falls in a corresponding concave pit on the key, and the cylinder is elevated by 0.1-0.3 mm and reaches the unlocking position. The utility model has the advantages of anti-abnormal unlocking performance, and simple manufacturing technique.

Description

A kind of anti-unusual cylinder lock of opening

The utility model relates to a kind of lockset, the cylinder lock in specifically a kind of mechanical type cross key hole.

The unusual unlatching of cylinder lock now generally is divided into two kinds, and a kind of is destructive, as holing on lock body and lock core interface along the pellet shot from a slingshot orientation.Another kind of is nondestructive to lock, as so-called unlocked by universal key.In order to strengthen anti-unusual unlatching of cylinder lock, used measure is for anti-drilling, all is to install the anti-drilling steel bushing of making of steel sheet additional at the lock body front end mostly and since thin steel bushing middle part need stay lockhole and and lock body between suitable gap is arranged, destroy easily, thereby anti-drilling effect is very limited.It is so-called unlocked by universal key that used measure is opened anti-foreign matter, mostly be the columns that increases pellet shot from a slingshot, but this can only slightly prolong the time that foreign matter is opened, and can not prevent the foreign matter unlatching effectively.

The purpose of this utility model is, sets up the anti-unusual pellet shot from a slingshot of opening of at least one row on the basis of existing cylinder lock, and they are distributed on the position of departing from bullet groove.The distance of the front end of pellet shot from a slingshot and lock core axis is less than 0.5mm, when the phase bitting is inserted into the position, the pellet shot from a slingshot front end falls on the key in the respective dimple, pellet shot from a slingshot is lifted 0.1～0.3mm and arrives the enable possition, and the corresponding bullet groove of key be the double wedge shape, because anti-unusual unlatching pellet shot from a slingshot is not on the bullet groove direction, thereby has an anti-drilling function, again since foreign matter opener thickness all more than 0.8mm, thereby this lock possesses again and prevents the foreign matter open function preferably, thereby plays antitheft function.

The purpose of this utility model is to realize like this.This lock comprises lock body, lock core, pellet shot from a slingshot, spring, and the keyhole on its lock core is the cross slotted eye, can be that two corresponding grooves are bullet groove, also can be that the one corresponding groove is a bullet groove, and another corresponding groove is a guide groove.We are in the position of departing from bullet groove, along offering at least one anti-unusual pellet shot from a slingshot hole of opening with the direction of lock core intersect vertical axis, in establish pellet shot from a slingshot and spring, under the situation that does not have insertions such as key, the contact surface of two pellets shot from a slingshot is lower than the contact surface 0.1～0.3mm of lock body and lock core in the hole, is in normally off.On the position of key corresponding to anti-unusual unlatching pellet shot from a slingshot, the pit that matches with the pellet shot from a slingshot front end is arranged, key is inserted into the position, and the pellet shot from a slingshot front end falls in the corresponding on the key pit, and pellet shot from a slingshot is elevated 0.1～0.3mm, and reaches the enable possition.

Cross-slot spring lock of the present utility model, owing to adopted the anti-unusual pellet shot from a slingshot of opening, the pellet shot from a slingshot front end is minimum apart from lock core shaft's linear distance, the pellet shot from a slingshot rear end is also very little apart from lock core and the interfacial distance of lock body, openers such as master key insert keyhole all can make the anti-unusual pellet shot from a slingshot rear end of opening surpass lock core and lock body interface, make lock be in locking states, on the other hand since the anti-unusual pellet shot from a slingshot of opening not on the bullet groove direction and be normally closed pellet shot from a slingshot, thereby having anti-drilling function, this has just greatly strengthened the theftproof performance of this lock.Moreover this lock construction is simple, produces easily, gives birth to originally low.

The cylinder lock in anti-unusual cross key hole of opening of the present utility model is provided by following examples and accompanying drawing thereof.

Fig. 1 is the front view of the cylinder lock of the anti-unusual cross lockhole of opening of the present utility model.

Fig. 2 is the sectional view of Fig. 1 along A-A

Fig. 3 is the sectional view of Fig. 1 along B-B

This lock comprises lock body [1], lock core [2], pellet shot from a slingshot [3], spring [4], and the keyhole on the lock core is the cross slotted eye, and corresponding groove is a bullet groove about it, and another corresponding groove is a guide groove.Its up and down corresponding bullet groove along groove to being arranged with four pellet shot from a slingshot holes, in pellet shot from a slingshot and spring are arranged, outermost layer has capping [5], and above-listedly vacate second pellet shot from a slingshot hole, followingly vacate the 4th pellet shot from a slingshot gadolinium, opening an angle beta=45 partially with bullet groove ° locates, and at above-listed second pellet shot from a slingshot hole end surface, following the 4th pellet shot from a slingshot hole end surface place is provided with the anti-unusual pellet shot from a slingshot hole of opening, in establish pellet shot from a slingshot, spring, skin is established capping, when the phase bitting is inserted into the position, the anti-unusual pellet shot from a slingshot front end of opening falls in the corresponding on the key pit, and this lock is in the enable possition.Have on the lock body front end face and check the mark [6] of opening key, this is labeled as heavy hole, half garden, and correspondence markings is arranged on the key in addition.For preventing endwisely slipping of the relative lock body of lock core, on the garden of lock core rear end, cannelure is arranged, in establish snap ring [7], the snap ring inner face is close to the lock body rear end face.Have radially groove on the rear end face of lock core, plectrum [8] is housed in it.Be to guarantee putting in place accurately of lock core locking, heavy hole, half garden arranged on the outer wall of lock core back segment, and do the hole in the lock body corresponding position, in establish steel ball [9] and spring [10], there is capping [11] in the aperture.

Claims (1)

1. The cylinder lock in a kind of cross key hole, comprise lock body, lock core, pellet shot from a slingshot, spring, one corresponding groove is a bullet groove, another corresponding groove is bullet groove or guide groove, it is characterized in that: in the position of departing from bullet groove, along with the direction of lock core intersect vertical axis, offer at least one anti-unusual pellet shot from a slingshot hole of opening, in establish pellet shot from a slingshot and spring, do not having key etc. to insert under the situation of lockholes, the contact surface of two pellets shot from a slingshot is lower than the contact surface 0.1～0.3mm of lock body and lock core in the hole, be in normally off, this moment the front end of pellet shot from a slingshot and lock core axis distance less than 0.5mm, when the phase bitting is inserted into the position, this lock is in the enable possition.

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