CN2389205Y - Cylinder lock and key thereof - Google Patents

Abstract

The utility model relates to a lock head and a key for a cylinder lock. A key hole on a lock core of the lock head of the cylinder lock is arranged at the edge of the lock core with a semi-sealing shape and the gear face of the hole is vertical to a cylinder. The lock screws and a guide slot of the key matched with the lock head are arranged on the front face of a key sheet and the back face of the key sheet is a circular arc shape. An unlocking tool can not flush a shifting fork through a lock hole when a tool sleeve unlock the lock, external force can not rotate the lock core, and therefore, the lockset has the advantages of high safety and good theft-proof performance.

Description

A kind of cylinder lock head and key

The utility model belongs to a kind of lockset, particularly relates to a kind of cylinder lock head and key.

The present cylinder lock head that generally uses, because lockhole and lock pin coaxial or both offset distances are very little, lock core rear end face upper shift fork can be washed out by lockhole by general purpose tool, open lockset with special tool then, simultaneously gathering sill is all arranged with supporting its key sheet two sides of key of lockhole, tartar is positioned at spoon sheet one side, can produce when unblanking by lockhole than high pulling torque with unlocking tool, make lock core and lock body produce relative displacement, unblanked to provide convenience with instrument covers such as master key, Unlocking guns, therefore, this cylinder lock safety and theftproof are bad.

The purpose of this utility model provides a kind of cylinder lock head and matched key, the lock core of this cylinder lock head and key with matching, the shift fork that both can prevent lock core one end is washed out by unlocking tool, can prevent that again instrument covers such as master key, Unlocking gun from leaving, its security performance and theftproof performance all lock than existing pellet shot from a slingshot.

To achieve these goals, the technical solution of the utility model is: a kind of cylinder lock head comprises lock body, lock core, pellet shot from a slingshot, pellet shot from a slingshot back-moving spring, shift fork, and it is semiclosed shape that the keyhole on the lock core is positioned at the lock core edge, and the hole flank of tooth is vertical with pellet shot from a slingshot.

With the key that above-mentioned cylinder lock head matches, its tartar, gathering sill all are positioned at the front of spoon sheet, and the reverse side of spoon sheet is a circular arc.

The utility model is because lockhole is positioned at the edge of lock core, its hole has big offset distance thereby shift fork not to overlap with hole projection on the lock core end face with shift fork on the lock core end face, use unlocking tool shift fork to be washed out through lockhole, and after key inserts lockhole, the circular arc of spoon sheet reverse side and lock core are formed a complete cylinder and are matched with lock body circular hole cambered surface, whole like this keyhole does not form complete closed shape hole on lock core, when unblanking with the instrument cover, be difficult to make the lock core rotation with external force, therefore, this lockset has good safety and theftproof.

The utility model is described in further detail below in conjunction with accompanying drawing.

Fig. 1 is a structural representation of the present utility model;

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

According to Fig. 1, Fig. 2 as can be known, cylinder lock head comprises lock body 1, lock core 3, pellet shot from a slingshot 4, pellet shot from a slingshot back-moving spring 2, shift fork 6, shift fork 6 is vertically fixed in lock core 3 other ends in the heart, it is semiclosed shape that keyhole 7 on the lock core 3 is positioned at lock core 3 edges, and lockhole 7 flank of tooth are parallel and vertical with pellet shot from a slingshot 4 with shift fork 6.The front that key 5 tartars 8 that match with lockhole 7, gathering sill 9 all are positioned at spoon sheet, spoon sheet reverse side is and the identical arc of lock core 3 peripheries.Like this when lock is not inserted key 5, because lockhole 7 is in lock core 3 edges and the hole flank of tooth is parallel with shift fork 6, offset distance is bigger between shift fork 6 and the lockhole 7, from lockhole 7 is shift fork 6 can't be washed out, and, lockhole 7 on lock core 3, forms semiclosed shape because being in lock 3 core edges, like this because of moment of torsion is too little, is difficult to make lock core 3 to rotate and reaches cover and open purpose with other instruments.But after key 5 inserts lockholes 7, because of the circular arc of spoon sheet reverse side matches with lock core complete circle cylinder of 3 compositions and with lock body 1 arc surface.Like this, the lockset that this tapered end has been installed has good safe antitheft performance, and opens very light with matched key with it.

Claims (2)

1, a kind of cylinder lock head, comprise lock body (1), lock core (3), pellet shot from a slingshot (4), pellet shot from a slingshot back-moving spring (2), shift fork (6), it is characterized in that it is semiclosed shape that keyhole (7) on the lock core (3) is positioned at lock core (3) edge, and the hole flank of tooth is vertical with pellet shot from a slingshot (4).

2, a kind of key (5) that matches with the described cylinder lock head of claim 1 comprises tartar (8), gathering sill (9), it is characterized in that tartar (8), gathering sill (9) all are positioned at the front of key piece, and the reverse side of spoon sheet is a circular arc.