CN212583447U - Anti-theft lock core structure and adaptive key - Google Patents

Abstract

The invention discloses an anti-theft lock core structure, which comprises a lock core main body, a key hole, a lower locking marble and a corresponding lower locking marble hole, wherein the lock core main body is provided with a containing cavity, a locking assembly is arranged in the containing cavity, the locking assembly comprises a locking piece and an elastic piece, a clamping position matched with the locking piece is arranged on the lower locking marble, and when the lower locking marble moves in the lower locking marble hole and the locking piece is aligned with the clamping position, the locking piece is clamped in the clamping position under the action of the elastic piece. The invention also discloses an adaptive key of the lock core structure. The improved structure is simple, the processing cost is low, the precision requirement is low, and the anti-theft effect is good.

Description

Anti-theft lock core structure and adaptive key

Technical Field

The invention relates to the technical field of locks, in particular to a lock cylinder structure of an anti-theft lock and an adaptive key.

Background

The existing lock cylinders in the market comprise lock cylinders of intelligent locks (fingerprints, magnetic cards, coded locks and the like), and the anti-theft function is improved mostly by improving marble structures, such as structures of beads in beads, mother-son beads, hollow beads, transverse bars, side beads and the like, or the key rate is improved. The improvement of the structure of the lock cylinder is relatively less. Because the marble structure is continuously improved, the marble structure is more and more complex, the security is improved, and the processing precision requirement and the processing cost are improved.

Disclosure of Invention

In order to overcome the defects of the prior art, the invention provides the anti-theft lock liner structure and the adaptive key, which are simple to process, low in production cost, resistant to picking, poking and vibration unlocking and resistant to unlocking by the non-adaptive key.

The technical scheme adopted by the invention for solving the technical problems is as follows:

the invention discloses an anti-theft lock core structure, which comprises a lock core main body, a key hole, a lower marble and a corresponding lower marble hole, wherein the lower marble comprises a locking lower marble, a containing cavity is arranged on the lock core main body, a locking assembly is arranged in the containing cavity and comprises a locking piece and an elastic piece, a clamping position matched with the locking piece is arranged on the locking lower marble, and when the locking lower marble moves in the corresponding locking lower marble hole and the locking piece is aligned with the clamping position, the locking piece is clamped in the clamping position under the action of the elastic piece.

Furthermore, the locking piece is a pin shaft, the elastic piece is a spring, and the pin shaft can transversely move in the accommodating cavity.

Furthermore, the position-limiting part is a groove.

Further, at least one common lower pin and a corresponding common lower pin hole are provided behind the locking lower pin.

Further, when locked, the length of the locking lower pin extending out of the key hole is larger than the length of the common lower pin extending out of the key hole.

Furthermore, a yielding hole for the pin shaft to pass through is formed in the position, corresponding to the clamping position, of the common lower marble.

Furthermore, the common lower marble is of a primary-secondary bead structure.

Furthermore, the pin shaft is T-shaped, and the accommodating cavity is provided with a stopping part for stopping the pin shaft from moving transversely.

A key matched with the anti-theft lock cylinder structure comprises a holding part and a tooth flower part, wherein the tooth flower part is provided with a tooth flower matched with the lower pin tumbler, an open groove is formed in the tooth flower part along the direction of inserting the key, and the tooth flower is positioned at the bottom of the open groove.

Further, the depth H of the opening groove is 0.2cm-0.8 cm.

The invention has the beneficial effects that: compared with the prior art, through improving the lock courage structure, set up the screens on the pellet shot from a slingshot, set up the locking piece in the lock courage main part, through choosing, dialling or vibrations, make the locking piece card on the screens very easily, and then lock the lock courage, can't unblank, this kind of improvement, simple structure, the processing cost is low, the required precision is low, and it is effectual to prevent burglary. The lock core can be matched with a key with an open groove, the tooth pattern starts to open teeth from the bottom of the open groove, and after the matched key is inserted into the lock core, due to the existence of the open groove, the bottom surface of the open groove can not press the locking lower marble to the position where a clamping position on the locking lower marble is aligned with the locking piece, so that the lock can be unlocked smoothly; when a non-adaptive key, namely an illegal key or a foreign body, is inserted into the lock cylinder, the locking lower pin tumbler is pressed to the position where the clamping position on the locking lower pin tumbler is aligned with the locking piece, so that the lock cylinder is locked, and the aim of preventing the illegal key from unlocking is fulfilled.

Drawings

The invention is further illustrated with reference to the following figures and examples.

FIG. 1 is a perspective view of one embodiment of the present invention;

FIG. 2 is a cross-sectional view of the structure of FIG. 1 in a state in which the locking lower pin is unlocked;

fig. 3 is a sectional view of the structure of fig. 1 in a state where the lower pin is locked;

FIG. 4 is a cross-sectional view of the cylinder with a key engaged and in an unlocked state;

FIG. 5 is a side view of a conventional lower pin;

FIG. 6 is a cross-sectional view of the key;

fig. 7 is a perspective view of the adapter key.

Detailed Description

Referring to fig. 1 to 5, an embodiment of a cylinder structure of an anti-theft lock of the present invention is shown, which includes a cylinder body 1, a keyhole 11, a lower locking tumbler 2 and a corresponding lower locking tumbler hole 12, a common lower tumbler 3 and a corresponding common lower tumbler hole 13. Be provided with holding chamber 14 on the lock courage main part 1, be equipped with the locking subassembly in the holding chamber 14, the locking subassembly includes locking piece and elastic component, be provided with under the locking on the pellet shot from a slingshot 21 with locking piece complex screens, work as under the locking pellet shot from a slingshot 2 is in remove under the locking in the bullet hole 12, the locking piece is aimed at during the screens, the locking piece is in under the effect of elastic component card is gone into in the screens.

The locking element may be of a snap, hook or pin configuration, see fig. 2-3, and it can be seen that the locking element of the present invention is preferably a pin 4. The elastic piece can be a spring, a spring sheet and the like, the elastic piece of the invention is preferably the spring 5, at the moment, the accommodating cavity 14 is transversely arranged on the lock cylinder body 1, the pin shaft 4 can transversely move in the accommodating cavity 14, and the transverse direction refers to the inserting and pulling direction of the key. The position fastener can be a through hole, an opening, a groove and other structures, and the position fastener shown in the invention is a groove 21. When the lower marble 2 is illegally unlocked, picked or locked by vibration, the lower locking marble 2 moves up and down in the lower locking marble hole 12, and when the groove 21 of the lower locking marble 2 is aligned with the pin shaft 4, the pin shaft 4 is pushed by the spring 5 to be inserted into the groove 21, referring to fig. 3, the lower locking marble 2 is clamped between the lock cylinder and the lock shell (not shown), the lock cylinder cannot rotate, the lock is completely locked, and the aim of preventing illegal unlocking is fulfilled.

In order to further increase the technical difficulty of unlocking, at least one common lower pin 3 and a corresponding common lower pin hole 13 are provided behind the locking lower pin 2. The invention has the advantages that because the common lower marble 3 is behind the locking lower marble 2, when the common lower marble is picked or pulled by a tool, the tool extends into the lock liner from the insertion hole 111, the locking lower marble 2 must be picked or pulled first, and then the common lower marble 3 can be picked or pulled, so that when the locking lower marble 2 is picked or pulled first, the locking lower marble 2 is easily locked on a clamping position by the locking piece. More preferably, when the lock is closed, the length of the locking lower marble 2 extending out of the key hole 11 is larger than the length of the common lower marble 3 extending out of the key hole 11, and the structure has the advantages that the locking lower marble 2 is not required to be selected or pulled if the lower marble behind the locking lower marble 2 is required to be selected or pulled, so that the technical unlocking difficulty is further improved. In order to improve the compactness of the lock cylinder structure, referring to fig. 2-5, the pin shaft 4 is arranged at a position of the common lower pin 3 corresponding to the position of the position clip to pass through the abdicating hole 31. The number of the common lower marbles 3 can be several. The common lower pin 3 can be a lower pin of the prior art, preferably, the common lower pin 3 has a primary-secondary ball structure with a secondary lower ball 32 and a primary lower ball 33, which further increases the technical unlocking difficulty, and in this structure, the length of the locked lower pin 2 and the common lower pin 3 extending out of the key hole 11 can be controlled by the stop 121 in the locked lower pin hole 12, the stop 131 in the common lower pin hole 13, the stop 132 in the secondary lower pin hole, and the length of the pin itself.

The invention can also have other lower marbles which are the same as the prior art except that the locking lower marble 2 and the common lower marble 3 are provided.

In order to keep the pin 4 properly locked, the pin 4 is preferably T-shaped, and the receiving cavity 14 has a stopper 141 for stopping the pin 4 from moving laterally. The stopper 141 serves to control the lateral movement distance of the pin 4 to meet the design requirement.

Because the displacement of the lower locking pin 2 can lead the clamping position of the lower locking pin 2 to be aligned with the locking piece, the lock cylinder is locked, and the lock cylinder cannot rotate, the normal unlocking can be ensured by the matched key, and the illegal key unlocking can be prevented. Referring to fig. 6-7, such a key 6 includes a grip portion 61 and a flower portion 62, the flower portion 62 has a flower 621 cooperating with the lower pin, the invention is that the flower portion 621 is provided with an open groove 622 along the key inserting direction, the flower 621 is located at the bottom of the open groove 622, i.e. the flower 621 starts to open teeth from the bottom surface 6222 of the open groove. In operation, when the key 6 is inserted into the cylinder, the bottom surface 6222 of the open recess 622 is at a certain depth H from the key surface 623, so that the bottom surface 6222 of the open recess can ensure that the lock position of the lower locking pin 2 does not reach the position aligned with the locking member when contacting and pressing the lower locking pin 2 until the lower locking pin 2 falls into the corresponding tooth pattern, and the lock can be unlocked smoothly. When an improper key or a foreign object, which is an improper key, is inserted into the cylinder, the surface 623 of the key is attached to the bottom surface 112 of the keyhole, and further, when the lower locking pin 2 is contacted and pressed down, the lower locking pin 2 is pressed to a deeper position, so that the clamping position on the lower locking pin 2 is aligned with the position of the locking piece, the cylinder is locked, and the aim of preventing the improper key from unlocking is fulfilled. Preferably, the depth H of the open recess 622 is 0.2cm to 0.8 cm. The key of the present invention may have other configurations than the split groove portion, depending on the configuration of the lock with which it is engaged, as in the prior art, such as the tooth portion 62 of the present invention of fig. 7 having two track grooves 624,625, the split groove 622 being located intermediate the two track grooves, the bottom of the two track grooves being deeper than the bottom of the split groove 622 to distinguish the track grooves from the split groove.

The references to "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like are to be construed as references to the orientation or positional relationship shown in the drawings only for the convenience of describing the present invention and for the simplicity of description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

The above embodiments do not limit the scope of the present invention, and those skilled in the art can make changes to equivalent technical means without departing from the overall concept of the present invention.

Claims (10)

1. The utility model provides an anti-theft lock courage structure, includes lock courage main part (1), key hole (11), pellet shot from a slingshot and corresponding bullet hole down, its characterized in that: pellet shot from a slingshot (2) under the locking is drawn together to pellet shot from a slingshot down, be provided with holding chamber (14) on lock courage main part (1), be equipped with the locking subassembly in holding chamber (14), the locking subassembly includes locking piece and elastic component be provided with under the locking on pellet shot from a slingshot (2) with locking piece complex screens works as pellet shot from a slingshot (2) removes under corresponding locking in marble hole (12) under the locking, the locking piece is aimed at during the screens, the locking piece is in the effect of elastic component is gone into down the card in the screens.

2. The lock core structure of an anti-theft lock according to claim 1, characterized in that the locking element is a pin (4), the elastic element is a spring (5), and the pin (4) can move laterally in the receiving cavity (14).

3. The lock core structure of an anti-theft lock according to claim 2, characterized in that the detent is a groove (21).

4. The anti-theft lock cylinder construction according to claim 2 or 3, characterized in that at least one common lower tumbler (3) and a corresponding common lower tumbler hole (13) are provided behind the locking lower tumbler (2).

5. The structure of a cylinder of an anti-theft lock according to claim 4, characterized in that, when closed, the length of the locking lower pin (2) protruding out of the keyhole (11) is greater than the length of the common lower pin (3) protruding out of the keyhole (11).

6. The lock core structure of the anti-theft lock according to claim 4, characterized in that a yielding hole (31) for the pin shaft (4) to pass through is arranged at the position of the common lower pin (3) corresponding to the blocking position.

7. The lock cylinder structure of an anti-theft lock according to claim 4, characterized in that the common lower tumbler (3) is a snap bead structure.

8. The lock core structure of an anti-theft lock according to claim 4, characterized in that the pin (4) is T-shaped, and the receiving cavity (14) has a stopping portion (141) for stopping the pin from moving laterally.

9. A key for cooperation with a cylinder structure of an anti-theft lock according to any one of claims 1 to 8, comprising a holding portion (61) and a tooth portion (62), said tooth portion (62) having a tooth (621) for cooperation with said lower pin, characterized in that said tooth portion (62) is provided with an open groove (622) in a key insertion direction, said tooth (621) being located at a bottom of said open groove (622).

10. A key as defined in claim 9, wherein said open groove (622) has a depth H of 0.2cm-0.8 cm.

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