CN2269439Y - Spring lock capable of proventing unlocked by universal key - Google Patents

Abstract

The utility model relates to a spring lock which can prevent being unlocked by a master key. The utility model comprises a lock body (1), a lock core (2), lock core cylinders (3), a lock core cylinder hole (4), a lock body cylinder (5), a lock body cylinder hole (6), and a lock body spring (7). At lest one cylinder set is provided with more than one convex cylinder pair, and at least one of other lock core cylinders (3) of the cylinder set is of an H shape. Under the condition of not changing the integral structure of the existing cylinder lock, the utility model can prevent the master key of a single tooth type or a multiple teeth type from unlocking the cylinder lock, has the characteristics of strong safety and low cost, and can be used for various occasions.

Description

A kind of cylinder lock that prevents unlocked by universal key

The utility model relates to a kind of lock, particularly can prevent the cylinder lock of unlocked by universal key.

Common billiards lock structure all is by lock body, lock core, and is made up of many pellet shot from a slingshot groups that lock core marble, lock core marble hole, lock spring, lock marble hole and lock body spring are constituted.The pellet shot from a slingshot group can be one group, also can be many groups, and if any the cross lock of 4 groups of pellets shot from a slingshot, every group can have many to pellet shot from a slingshot.But operating principle all is identical, and when promptly shutting, lock spring embeds in the lock core marble hole under the effect of lock body spring, and lock core can not freely be rotated.When opening lock, key is inserted lock core, key bit jack-up lock core marble ejects lock core to the lock spring that embeds lock core marble hole just by lock core marble, and the turn key just can drive the lock core rotation again, and lock is opened.Because the operating principle of cylinder lock is similar, so the master key that can open one group or a class cylinder lock with a key has just been arranged.In order to prevent unlocked by universal key, people have done improvement to cylinder lock, but present improvement all can only prevent a kind of master key of multiple tooth likeness in form comb formula, also can't prevent its unlatching for the master key of monodentate class.The master key of monodentate class is to utilize always to have certain clearance between pellet shot from a slingshot and the pellet shot from a slingshot hole, earlier lock core is applied a torsion, make the aperture of every pair of pellet shot from a slingshot produce certain dislocation, and make lock core marble and lock spring produce certain inclination, with a briar tooth each lock core marble is depressed one by one then, make by the lock spring of skew and withdraw from lock core marble hole, when briar tooth discharges, because the effect of lock body spring, lock spring will recover normal condition and upspring to the lock core direction, and the dislocation that produce owing to the aperture this moment, lock spring is withstood by the lock core marble aperture, forms self-locking.When lock spring withdraws from lock core marble hole and by self-locking, the torsion that applies is rotational lock core then, and lock is opened one by one.Therefore such master key, present various cylinder locks also all can not prevent to be opened by it, and the threat that the user of cylinder lock is constituted is very big.

A kind of scheme is arranged, adopt two pairs or two pairs to be set at least in a pellet shot from a slingshot group with the convex-shaped pellet shot from a slingshot.Generally speaking, this convex lock spring can prevent the self-locking of lock core marble aperture to the lock spring end, and the convex lock core marble can prevent from formerly lock core to be applied the unlatching that re-uses multiple tooth master key under the twisting force.But this cylinder lock also has weak point, if with the master key of monodentate class this cylinder lock is done after-treatment exactly, promptly repeats previously described operating process, still can utilize the lock core marble aperture that lock is opened in the self-locking of the protruding end of convex lock spring.

The purpose of this utility model is: a kind of cylinder lock that prevents various unlocked by universal key is provided.It is in the cylinder lock that has the convex pellet shot from a slingshot, in the right lock core marble of other each pellet shot from a slingshot of the pellet shot from a slingshot group that has the convex pellet shot from a slingshot, at least one I-shaped lock core marble is set.After the master key of monodentate class was done cylinder lock to handle for the first time, the neck that utilizes I-shaped lock core marble this moment can prevent that to the locking that lock core rotates the master key of monodentate class from doing to handle for the second time to cylinder lock.Accomplish to prevent the unlatching of various master keys.

Formation of the present utility model: comprise lock body (1), lock core (2), lock core marble (3), lock core marble hole (4), lock spring (5), lock marble hole (6), lock body spring (7); Lock body (1) can have one or more pellet shot from a slingshot groups, wherein has at least the lock core marble (3) and the lock spring (5) that have in the pellet shot from a slingshot group more than two pairs or two pairs that a projection (8) and projection (9) are respectively arranged on contact surface.Described other each pellet shot from a slingshot centering that has the pellet shot from a slingshot group of convex pellet shot from a slingshot, the lock core marble that has a pair of pellet shot from a slingshot at least is I-shaped lock core marble (10).

Compared with the prior art, the utility model is owing in the cylinder lock that has the convex pellet shot from a slingshot, in the right lock core marble of other each pellet shot from a slingshot of the pellet shot from a slingshot group that has the convex pellet shot from a slingshot, be provided with at least one I-shaped lock core marble.After the master key of monodentate class was done cylinder lock to handle for the first time, the neck that utilizes I-shaped lock core marble this moment can prevent that to the locking that lock core rotates the master key of monodentate class from doing to handle for the second time to cylinder lock.Not changing under the existing cylinder lock overall structure situation, can prevent the unlatching of various master keys.Have the production of being easy to, high safety, the characteristics that cost is low can be widely used in various occasions.

Below in conjunction with accompanying drawing the utility model specific embodiment is described in further detail.

Fig. 1 is a generalized section of the present utility model;

Fig. 2 is the shape schematic diagram of the I-shaped lock core marble of the utility model (10);

Embodiment: formation of the present utility model comprises lock body (1), lock core (2), lock core marble (3), lock core marble hole (4), lock spring (5), lock marble hole (6), lock body spring (7); Lock body (1) can have one or more pellet shot from a slingshot groups, wherein has at least the lock core marble (3) and the lock spring (5) that have in the pellet shot from a slingshot group more than two pairs or two pairs that a projection (8) and projection (9) are respectively arranged on contact surface.Described other each pellet shot from a slingshot centering that has the pellet shot from a slingshot group of convex pellet shot from a slingshot, the lock core marble that has a pair of pellet shot from a slingshot at least is I-shaped lock core marble (10).

Existing cylinder lock normally has four groups of pellets shot from a slingshot " cross lock " or the common lock of one group of pellet shot from a slingshot is arranged.Every group is divided into somely to pellet shot from a slingshot again, and every pair of pellet shot from a slingshot is made up of a lock core marble (3), lock core marble hole (4), lock spring (5), lock marble hole (6), lock spring spring (7).

No matter be the cylinder lock that one or more pellet shot from a slingshot groups are arranged, it is right always to have a plurality of pellets shot from a slingshot, the lock core marble (3) and the lock spring (5) of the pellet shot from a slingshot centering more than two or two respectively have a projection (8) and projection (9) on contact surface as long as make wherein, and the shape of projection (8) and projection (9) can be cylinder, cuboid, swallow-tail form, taper etc.The projection (9) of lock spring (5) can prevent that the lock core marble aperture from producing self-locking to the end of lock spring (5), and the projection (8) of lock core marble (3) can prevent from formerly lock core (2) to be applied the unlatching that re-uses multiple tooth master key under the twisting force.

After the master key of monodentate class was done cylinder lock to handle for the first time, the lock core marble aperture was created in the root of the projection (9) of lock spring (5) to the self-locking of lock spring (5), and this moment, lock core (2) can not turn to the enable possition because of the effect of projection (9).Because after the master key of monodentate class is done to handle for the first time to cylinder lock, dislocation always between lock core marble hole (4) and the lock marble hole (6), be that lock core marble hole (4) produces, thereby make that the end of I-shaped lock core marble (10) can't return stretching out that the lock core marble aperture enters lock marble hole (6) back, promptly I-shaped lock core marble (10) is stuck between lock core marble hole (4) and the lock marble hole (6).Thereby being rotated further of lock core (2) carried out locking.Have only lock core (2) is returned to original state, I-shaped lock core marble (10) just can be released, thereby the master key that has prevented the monodentate class is done to handle for the second time to cylinder lock.Accomplished to prevent the unlatching of various master keys.

Claims (1)

1, a kind of cylinder lock that prevents unlocked by universal key comprises lock body (1), lock core (2), lock core marble (3), lock core marble hole (4), lock spring (5), lock marble hole (6), lock body spring (7); Lock body (1) can have one or more pellet shot from a slingshot groups, wherein has at least the lock core marble (3) and the lock spring (5) that have in the pellet shot from a slingshot group more than two pairs or two pairs that a projection (8) and projection (9) are respectively arranged on contact surface; It is characterized in that: described other each pellet shot from a slingshot centering that has the pellet shot from a slingshot group of convex pellet shot from a slingshot, the lock core marble that has a pair of pellet shot from a slingshot at least is I-shaped lock core marble (10).

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