CN2400534Y - Anti-theft head of cylinder lock - Google Patents

Abstract

The utility model relates to an anti-theft lock head for a cylinder lock, which improves a lock core and a lower row of cylinders on the basis of a common cylinder lock structure which is composed of a lock body, a lock core, cylinders, springs, sealing pieces, transmission pieces, etc. Dark slots are arranged at one side of at least one cylinder hole of the lock core and the heads of the lower row of cylinders corresponding to the dark slot positions are provided with a matched step structure with a big and a small heads. When the design is unlocked by an original key, the lower row of cylinders synchronously rotate with the lock core and the dark slot structure can not influence unlocking. If a skeleton piece-inserted key is used for unlocking, all cylinders are pushed and the lock core rotates corresponding to the cylinders. When the dark slots are rotated to aim at the cylinders with big and small heads, the cylinders enter the dark slots so that the lock core can not rotate to achieve the goals of safety and anti-theft.

Description

Anti-theft cylinder lock

The utility model relates to lock construction, especially the cylinder lock head structure.

The existing pellet shot from a slingshot class lock that generally uses, its structure adopts the diverse location state of cylindrical billiard in the pellet shot from a slingshot hole of length different designs to reach locking and purpose of opening (as Fig. 1).Under normal condition, when unblanking with original key, key inserts lock core pushing tow pellet shot from a slingshot, make down row pellet shot from a slingshot upper end face all with the equal (see figure 2) of lock core cylindrical outer surface, the rotation of key just can make lock core in the lock core hole of lock body, drive under row's pellet shot from a slingshot rotate synchronously about doing, and stir dead bolt by driver blade and open lock (also can directly drive simultaneously and open lock) by lock core.But this lock is as if the words of opening with one group of universal inserted sheet spoon of being made up of last inserted sheet (1 ') and following inserted sheet (2 '), energy pushing tow pellet shot from a slingshot and energy will be arranged pellet shot from a slingshot down and all eject lock core equally, make down the lower end external surface and the equal (see figure 3) of lock core cylindrical outer surface of row's pellet shot from a slingshot, lock core can be opened lock relative to arbitrarily rotating about row's pellet shot from a slingshot work down equally so, such lock, concerning omnipotent inserted sheet spoon,, brought serious potential safety hazard to unit and individual family as illusory.

The purpose of this utility model is to overcome the defective of prior art and a kind of anti-theft cylinder lock that can prevent the high security that omnipotent inserted sheet spoon is opened is provided.

According to above-mentioned purpose, embodiment of the present utility model is: comprise a lock body, the lock core hole that is subjected to the lock core of axial limiting to have the key slot and is positioned at lock body is slidingly matched with it, lock body and lock core are provided with coaxial pellet shot from a slingshot hole with diameter, the row's of being provided with pellet shot from a slingshot in the pellet shot from a slingshot hole, under arrange pellet shot from a slingshot and spring, make pellet shot from a slingshot, the built-in cap liner of spring is entrenched in the lock body enclosed slot, driver blade is installed in the lock core card film trap, it is characterized in that described lock core is provided with undercut at least one pellet shot from a slingshot hole side, following row's pellet shot from a slingshot head of corresponding undercut position is the concentric reducer ledge structure that matches slotting with undercut.

The utility model is owing to be provided with undercut in the pellet shot from a slingshot hole of lock core side, makes the concentric reducer ledge structure that matches slotting on the pellet shot from a slingshot head arranging down.When unblanking with original key, because of row's pellet shot from a slingshot and lock core rotate synchronously down, the pellet shot from a slingshot of undercut and concentric reducer does not influence unblanks, and when unblanking with universal inserted sheet spoon, because on pellet shot from a slingshot all pushes up, lock core rotates relative to pellet shot from a slingshot, at rotation process when undercut goes to when aiming at pellet shot from a slingshot, pellet shot from a slingshot is subjected to the spring pressure effect and enters undercut, lock core can't be rotated, thereby just can't reach the purpose of unblanking, solved the major defect that the omnipotent inserted sheet spoon of existing used for spring lock can be opened lock arbitrarily, make users increase anti-theft security, have better practicability and social benefit, can the unit of being widely used in and family in be applicable.

Description of drawings:

Fig. 1 is common spring lock locking condition figure.

Fig. 2 is common spring lock original key opening figure.

Fig. 3 locks with omnipotent inserted sheet spoon opening figure for common spring.

Fig. 4 offers the undercut structural representation on the utility model lock core.

Fig. 5 arranges the concentric reducer structural representation of pellet shot from a slingshot down for the utility model.

Fig. 6 is the lock core that has undercut.

Fig. 7 is the A-A sectional view (can open with original key) of Fig. 4.

Fig. 8 is the B-B sectional view (open with omnipotent inserted sheet spoon, the microcephaly that lock core turns left to arrange at present pellet shot from a slingshot enters the undercut state) of Fig. 5.

Fig. 9 is the B-B sectional view (open with omnipotent inserted sheet spoon, the microcephaly that pellet shot from a slingshot is arranged in the lock core right-hand rotation at present enters the undercut state) of Fig. 5.

Below will the utility model embodiment be described in detail again by above-mentioned relevant accompanying drawing.

Referring to Fig. 4-6, anti-theft cylinder lock has a lock body (3), its external surface is a cylindrical structural, also can be designed to square or other geometry by the requirement of lock, lock body has the circular lock core hole of departing from center installation lock core (8), be processed with pellet shot from a slingshot hole (11) on the lock body, lock marble hole is outward an enclosed slot.

The lock core hole that is subjected to have the key slot (12) identical with key shape in the middle of the lock core of axial limiting and is positioned at lock body is slidingly matched with it.Its axial limiting structure is by the ledge structure of an end, the other end is processed a groove on lock core, buckle into positioning cards (2) in the groove and realize, lock core shaft can freely not rotated to not going here and there, driver blade (1) is installed in the card slot of lock core, is stirred locking and the unlatching that dead bolt is realized lock by driver blade.Be processed with on the lock core and the coaxial pellet shot from a slingshot hole (11) of lock body with diameter, on diameter surface, can design 1-4 row, every row has 3-9 pellet shot from a slingshot hole, can be equidistantly or be not equidistant in adjacent pellet shot from a slingshot hole, present embodiment is that 1 row, 5 pellet shot from a slingshot holes that circle is equidistant are set, and comprises that at least one pellet shot from a slingshot hole side part or all of pellet shot from a slingshot hole side is processed with the undercut (9) of control left-right rotation.The pellet shot from a slingshot hole side that undercut is set can be left side or the right side or the and arranged on left and right sides in pellet shot from a slingshot hole, comprises that also a left side (or right) side in a pellet shot from a slingshot hole and the right side (or left side) side in adjacent or non-conterminous pellet shot from a slingshot hole are provided with undercut.

The row's of being provided with pellet shot from a slingshot (6) in the pellet shot from a slingshot hole, arrange pellet shot from a slingshot (7) and spring (5) down, pellet shot from a slingshot and spring must guarantee to move up and down in the pellet shot from a slingshot hole flexibly, and damping phenomena must not be arranged.Make in the chimeric enclosed slot that sticks in lock body of the built-in cap liner (4) of pellet shot from a slingshot, spring.

Following row's pellet shot from a slingshot head of corresponding lock core undercut (9) position is the concentric reducer structure (10) that matches slotting with undercut, slotting in order to match, its little area of bed must be less than the undercut size, the width of undercut not only greater than the small head external diameter of arranging pellet shot from a slingshot down also less than the outside dimension of last row's pellet shot from a slingshot.The R of undercut R end is of a size of 0.5 times of undercut width, the length of undercut is greater than 1.2 times of self width, undercut R end gos deep into the degree of depth of plug face and holds equal in length with the microcephaly who arranges pellet shot from a slingshot down, and undercut is not less than 0.5 millimeter by lock core marble nose end and edge, pellet shot from a slingshot hole distance.The part pellet shot from a slingshot hole of lock core or whole both sides, pellet shot from a slingshot hole all can be provided with undercut, and the head of following row's pellet shot from a slingshot also part has or all have the concentric reducer structure.

Upper and lower row's pellet shot from a slingshot external diameter is identical, the length of every pellet shot from a slingshot is determined according to the length of arranging pellet shot from a slingshot down, arrange short under last platoon leader's the joining, platoon leader under short the joining of last row, every pellet shot from a slingshot length exceeds the lock core external diameter more than 1 millimeter in the time of should arranging pellet shot from a slingshot under packing into, when not having key to insert, also can limit the effect of lock core left-right rotation in lock body like this, length by upper and lower row's pellet shot from a slingshot cooperates, and has guaranteed the pressure equalizing of spring to every row's pellet shot from a slingshot.Spring is cylindrical stage clip, and external diameter is less than lock marble hole, and work elastic force must guarantee to make down whole R termination portion of row's pellet shot from a slingshot compress the key alveolus after key inserts lock core.After key was extracted, following row's pellet shot from a slingshot head restored and compresses the lock core marble groove.

The design is when opening insertion lock core key slot with matched key, under the effect of key alveolus pellet shot from a slingshot is being pushed up, make down the upper end face of row's pellet shot from a slingshot all equal with the lock core cylindrical outer surface, and the row's of going up pellet shot from a slingshot all leaves lock core marble hole, at this moment lock core can drive down row's pellet shot from a slingshot and make synchronous left-right rotation, last row's pellet shot from a slingshot is in the lock marble hole motionless, does not influence freely rotating of lock core, opens lock (referring to Fig. 7) so the rotation of lock core is stirred dead bolt by driver blade.

When opening with one group of omnipotent inserted sheet spoon, under arrange pellet shot from a slingshot and all ejected lock core marble hole, this moment lock core row's pellet shot from a slingshot can left-right rotation relatively down, when lock core went to undercut aligning pellet shot from a slingshot, following row's pellet shot from a slingshot moved down under the effect of last row's pellet shot from a slingshot and spring, made down the microcephaly of row's pellet shot from a slingshot insert undercut, this moment, undercut worked, block down row's pellet shot from a slingshot lock core can't be rotated again, so omnipotent inserted sheet spoon has just lost the function of any unlatching lock, has played the security insurance effect (referring to Fig. 8, Fig. 9) of lock.

Claims (4)

1. anti-theft cylinder lock, comprise a lock body (3), the lock core hole that is subjected to the lock core (8) of axial limiting to have key slot (12) and is positioned at lock body is slidingly matched with it, lock body and lock core are provided with coaxial pellet shot from a slingshot hole (11) with diameter, the row's of being provided with pellet shot from a slingshot (6) in the pellet shot from a slingshot hole, under arrange pellet shot from a slingshot (7) and spring (5), make pellet shot from a slingshot, the built-in cap liner (4) of spring is entrenched in the lock body enclosed slot, driver blade (1) is installed in the lock core card film trap, it is characterized in that described lock core is provided with undercut (9) at least one pellet shot from a slingshot hole (11) side, following row's pellet shot from a slingshot (7) head of corresponding undercut position is the concentric reducer ledge structure (10) that matches slotting with undercut.

2. anti-theft cylinder lock as claimed in claim 1 is characterized in that described lock core (8) pellet shot from a slingshot hole (11) side can be left side or the right side or the and arranged on left and right sides in pellet shot from a slingshot hole.

3. anti-theft cylinder lock as claimed in claim 1 is characterized in that described lock body (3), lock core (8) pellet shot from a slingshot hole can be provided with 1-4 row, and every row has 3-9 pellet shot from a slingshot hole.

4. as claim 1 or 3 described anti-theft cylinder locks, it is characterized in that described adjacent pellet shot from a slingshot hole (11) can be equidistantly or not equidistant.

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