CN2209706Y - Double-tumbler pins lock adapted of preventing universal key from unlocking - Google Patents

Abstract

The utility model discloses a double-spring lock which prevents from opening by a universal key. The inner part of the lock core 1 and a lock body 2 is respectively provided with two groups of cylinders and springs, a drive cylinder 4 is contacted with a key hole, and one cylinder which is contacted with the key hole is a prism whose side surface is provided with a concave arc curved surface 8, and the cylinder can also be a rotator which uses the side surface as the surface. A driven cylinder is contacted with the drive cylinder, and is positioned on the side surface of the concave arc curved surface arranged at the drive cylinder or is positioned on the concave curved surface at the side surface of the rotary body of the drive cylinder whose shape is the rotary body. The utility model has the advantages of reasonable structure, low cost and high safety, and can prevent effectively from opening by the universal key.

Description

Double-tumbler pins lock adapted of preventing universal key from unlocking

The utility model discloses a kind of Double-spring lock that prevents with unlocked by universal key.

The social now cylinder lock of producing of going up is single spring lock mostly, be that the spring that pellet shot from a slingshot and pellet shot from a slingshot connect all has only a row, use the stealer of master key can be in the public eye easily will be with lock, the door-lock opening of this kind lock, the structure chart of master key as shown in Figure 1, the structural representation of common single spring lock is as shown in Figure 2.Master key A is inserted in common single spring lock lockhole, depress the pellet shot from a slingshot of single spring lock, insert B then, make B that the suitable degree of depth be arranged, promptly each tooth of B just can be pressed on each pellet shot from a slingshot of lock core, takes out A like this, make each tooth of B press down the pellet shot from a slingshot of lock core, each tooth of B flushes with space between lock core and the lock body, and lock core is just free to rotate so, and lock is opened; The theftproof lock that has is done the keyhole of lock core bently, A, B may not open, but unlocked by universal key with D structure among Fig. 1, each tooth of D is movable, be equivalent to one by one " piston ", the more pliable and tougher steel wire of ining succession under the tooth, the other end of steel wire links to each other with d, d can rotate, during rotation, " piston " can move up and down, when D inserts lockhole, rotate d, each " piston " just can squeeze the pellet shot from a slingshot in lock core, and lock core can freely be rotated, thereby lock is opened, for fear of the massive losses that such master key brings for family and factory, people press for a kind of lock that can prevent with unlocked by universal key.Utility model ZL93229390.5 discloses a kind of " preventing the lock with unlocked by universal key ", this lock is made up of lock body, lock core, snap post and snap, the lower end car of snap post has thin snap post, the opposite direction of corresponding locking tappet hole place lock core rotation when unblanking is milled with antitheft groove on the lock core, but this lock is owing to still adopt single spring, anti-theft effect is still very undesirable, as the structure of master key is improved a little, its antitheft groove is filled, just this kind lock smooth opening can not had antitheft purpose again.

The purpose of this utility model promptly is to overcome the shortcoming of prior art, provides a kind of simple in structure, safe and reliable, and master key can not be opened fully, the Double-spring lock that prevents to use unlocked by universal key easy to use.

The purpose of this utility model reaches by following technical measures: prevent to be made up of lock core and lock body with the Double-spring lock of unlocked by universal key, lock core is provided with keyhole, two groups of pellets shot from a slingshot all are installed in lock core and the lock body, what link to each other with pellet shot from a slingshot has a spring that is complementary with it, equidirectional with the keyhole on the lock core is active pellet shot from a slingshot and back-moving spring thereof, another group is driven pellet shot from a slingshot and holddown spring, initiatively pellet shot from a slingshot contacts with keyhole, the other end connects back-moving spring, one group of active pellet shot from a slingshot comprises the above pellet shot from a slingshot of two row, each row pellet shot from a slingshot comprises at least two pellets shot from a slingshot, this lists the prism that is shaped as of a pellet shot from a slingshot contacting with keyhole, a prismatic side is provided with a recessed arc-shaped curved surface, this pellet shot from a slingshot shape also can be the rotary body that the side is a curved surface, one group of driven pellet shot from a slingshot comprises the above pellet shot from a slingshot of two row, each row pellet shot from a slingshot comprises at least two pellets shot from a slingshot, first pellet shot from a slingshot on every row contacts with the active pellet shot from a slingshot, be positioned at and be shaped as on the recessed arc-shaped curved surface of prismatic active pellet shot from a slingshot, or be shaped as on the concave curvatures of active pellet shot from a slingshot rotary body side of rotary body, the other end links to each other with holddown spring.

Fig. 1 is the structure chart of master key;

Fig. 2 is the schematic diagram of common latch lock;

Fig. 3 is the schematic diagram that prevents with the Double-spring lock of unlocked by universal key.

The utility model will be further described below in conjunction with accompanying drawing.

As shown in Figure 3, a kind of preventing is made up of lock core 1 and lock body 2 with the Double-spring lock of unlocked by universal key, lock core 1 is provided with keyhole 3, in lock core 1 and the lock body 2 pellet shot from a slingshot is installed all, be connected with the spring that is complementary with it on the pellet shot from a slingshot, pellet shot from a slingshot and spring in lock core 1 and the lock body 2 have two groups, equidirectional with the keyhole on the lock core is active pellet shot from a slingshot 4 and back-moving spring 5 thereof, another group is driven pellet shot from a slingshot 6 and holddown spring 7 thereof, initiatively pellet shot from a slingshot 4 contacts with keyhole 3, one group of active pellet shot from a slingshot 4 comprises the above pellet shot from a slingshot of two row, each row pellet shot from a slingshot comprises at least two pellets shot from a slingshot, when the shape of cross section of lock core 1 is circle, this lists the prism that is shaped as of the pellet shot from a slingshot that contacts with keyhole, a prismatic side is provided with a recessed arc-shaped concave 8, and when lock was in closed condition, initiatively the contact surface 11 of pellet shot from a slingshot and pellet shot from a slingshot and lock core 1 staggered with the contact surface 10 of lock body 2.One group of driven pellet shot from a slingshot 6 comprises the above pellet shot from a slingshot of two row, and each row pellet shot from a slingshot comprises at least two pellets shot from a slingshot, and driven pellet shot from a slingshot one end contacts with the active pellet shot from a slingshot, is positioned at the active pellet shot from a slingshot and is provided with on the side of recessed arc-shaped curved surface, and the other end links to each other with holddown spring 7.When lock is in closed condition, the driven pellet shot from a slingshot that contacts with the active pellet shot from a slingshot is positioned at the downside of arc-shaped curved surface, do not enter arc-shaped curved surface, the holddown spring 7 on this row is in impaction state, and the contact surface 9 between driven pellet shot from a slingshot and pellet shot from a slingshot staggers with the contact surface 10 of lock core and lock body.When key inserts keyhole, key presses down initiatively pellet shot from a slingshot 4, initiatively pellet shot from a slingshot moves down, press the back-moving spring 5 that links to each other with the active pellet shot from a slingshot, initiatively pellet shot from a slingshot flushes with the contact surface 10 of lock body with the contact surface 11 and the lock core of pellet shot from a slingshot, simultaneously, when initiatively pellet shot from a slingshot moves down, initiatively the recessed arc-shaped curved surface of pellet shot from a slingshot side moves down, and driven pellet shot from a slingshot falls in the recessed arc-shaped curved surface 8, and all the other driven pellets shot from a slingshot move under holddown spring 7 elastic force promote on this row, contact surface 9 between driven pellet shot from a slingshot and pellet shot from a slingshot also flushes with the contact surface of lock core and lock body, at this moment, lock core can rotate in lock body, and lock is by smooth opening.When the cross section of lock core 1 for removing other geometries the circle, as triangle, during rectangle etc., initiatively the pellet shot from a slingshot that contacts with keyhole of pellet shot from a slingshot is shaped as the rotary body that the side is a curved surface, driven pellet shot from a slingshot contacts with the active pellet shot from a slingshot, be positioned on the concave curvatures of active pellet shot from a slingshot rotary body side, when lock is in closed condition, the driven pellet shot from a slingshot that contacts with the active pellet shot from a slingshot is positioned at the concave curvatures downside, do not enter curved surface, holddown spring on this row is in impaction state, the contact surface of contact surface between driven pellet shot from a slingshot and pellet shot from a slingshot and lock core and lock body staggers, when key inserts keyhole, key presses down initiatively pellet shot from a slingshot, initiatively pellet shot from a slingshot moves down, press back-moving spring, initiatively pellet shot from a slingshot flushes with the contact surface of lock body with the contact surface and the lock core of pellet shot from a slingshot, simultaneously, when pellet shot from a slingshot moves down, initiatively the concave curvatures of pellet shot from a slingshot side moves down, driven pellet shot from a slingshot falls in it, and all the other driven pellets shot from a slingshot are under the holddown spring effect on this row, and driven pellet shot from a slingshot also flushes with lock core lock body contact surface with contact surface between pellet shot from a slingshot, at this moment, lock core can push in the lock body lock is opened.

From top narration as can be seen, this Double-spring lock can all play antitheft effect to the master key of two kinds of structural principles among Fig. 1, these master keys can only all squeeze out lock core with the active pellet shot from a slingshot, but driven pellet shot from a slingshot just can not flush with the contact surface between lock core and the lock body with contact surface between pellet shot from a slingshot, lock just can not be opened, and plays antitheft effect, and this utility model is safe and reliable, with low cost, be the desirable safe-guard door locks in place such as family, factory.

Claims (4)

1, a kind of Double-spring lock that prevents with unlocked by universal key, form by lock core 1 and lock body 2, lock core 1 is provided with keyhole 3, in lock core 1 and the lock body 2 pellet shot from a slingshot is installed all, be connected with the spring that is complementary with it on the pellet shot from a slingshot, it is characterized in that: pellet shot from a slingshot and spring in described lock core 1 and the lock body 2 all have two groups, equidirectional with the keyhole on the lock core is one group of initiatively pellet shot from a slingshot 4 and back-moving spring 5 thereof, another group is driven pellet shot from a slingshot 6 and holddown spring 7, active pellet shot from a slingshot 4 one ends contact the other end with keyhole 3 and connect back-moving spring, this shape that lists a pellet shot from a slingshot that contacts with keyhole can be prism, a prismatic side is provided with a recessed arc-shaped curved surface 8, and the shape of this pellet shot from a slingshot also can be the rotary body that the side is a curved surface; Driven pellet shot from a slingshot one end contact with pellet shot from a slingshot initiatively, is positioned on the side that is shaped as the arc-shaped curved surface that prismatic active pellet shot from a slingshot is recessed into or is shaped as on the concave curvatures of rotary body side of active pellet shot from a slingshot of rotary body, and the other end links to each other with holddown spring 7.

2, a kind of Double-spring lock that prevents with unlocked by universal key according to claim 1 is characterized in that: described one group of active pellet shot from a slingshot 4 comprises the above pellet shot from a slingshot of two row, and each row pellet shot from a slingshot comprises at least two pellets shot from a slingshot.

3, a kind of Double-spring lock that prevents with unlocked by universal key according to claim 1 is characterized in that: described one group of driven pellet shot from a slingshot 6 comprises the above pellet shot from a slingshot of two row, and each row pellet shot from a slingshot comprises at least two pellets shot from a slingshot.

4, a kind of Double-spring lock that prevents with unlocked by universal key according to claim 1 is characterized in that: when the cross section of described lock core 1 was circular, the active pellet shot from a slingshot that contacts with keyhole was for prismatic; The cross section of lock core is when removing other geometries circular, and the active pellet shot from a slingshot is that the side is the rotary body of curved surface.

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