CN211776559U - Lock core structure with AB key function - Google Patents

Abstract

The invention discloses a lock core structure with an AB key function, which comprises a lock shell, a pulling lug and a lock core, wherein the lock core is arranged in the lock shell and the pulling lug in a penetrating way, a first accommodating groove for accommodating a locking assembly and a second accommodating groove for accommodating a main locking pin are arranged on the lock core, a third accommodating groove is arranged at one end, away from a key inlet, of the first accommodating groove, an auxiliary locking pin is arranged in the third accommodating groove, a self-destruction pin clamped with the third accommodating groove and a first matching part matched with the shell are fixed on the auxiliary locking pin, a second matching part matched with the first matching part is arranged in the lock shell, and the auxiliary locking pin is locked in an unlocking state by the self-destruction pin. Through the arrangement, a user can normally unlock the lock when using the key B which is not matched with the tooth pattern of the auxiliary locking pin during decoration, and once the key which is not matched with the tooth pattern of the auxiliary locking pin is used, the key which is not matched with the tooth pattern of the auxiliary locking pin cannot unlock the lock, so that the safety is high.

Description

Lock core structure with AB key function

[ technical field ] A method for producing a semiconductor device

The invention relates to the field of locks, in particular to a lock core structure with an AB key function.

[ background of the invention ]

The lock is a common safety appliance in daily life and is widely applied to families, offices, warehouses, various vehicles and the like. In daily life, people can use a decoration key when purchasing a new house for decoration, use a formal key after the decoration is finished, and use the formal key to disable the decoration key after the decoration is finished. The lock core with the AB key function used in the market at present is mostly a lock core with a marble structure, the structure of the lock core is realized by matching a small steel ball with a marble, the lock core is simple in structure and low in anti-theft performance, the key A can be copied only by filling the tooth pattern part of the key B, the possibility that the lock core is illegally opened is increased, and the potential safety hazard is very large.

[ summary of the invention ]

In order to solve the problems, the invention provides a lock cylinder structure with an AB key function.

In order to achieve the purpose, the invention provides the following technical scheme:

a lock core structure with AB key function comprises a lock shell, a lock core which can rotate relative to the lock shell is arranged in the lock shell, a locking assembly which is matched with a key tooth pattern is arranged in the lock core, a key hole for inserting an AB key and a first containing groove for containing the locking assembly are arranged at one end of the lock core, a third containing groove which is communicated with the first containing groove is arranged at one side of the first containing groove far away from the entrance of the key hole, an auxiliary locking pin which can rotate synchronously with the lock core and is matched with an A key is arranged in the third containing groove, the lock core structure is characterized in that the auxiliary locking pin is fixedly provided with a self-destruction pin which is clamped with the lock core and a first matching part which is matched with the lock shell, the self-destruction pin is a boss which is positioned on the upper surface of the auxiliary locking pin and is integrally formed with the auxiliary locking pin, and a second matching part which is matched with the first matching part is arranged in the lock shell, the self-destruction pin locks the auxiliary locking pin in an unlocking state, and the first matching part can rotate along the circumferential direction of the second matching part at the moment; the auxiliary locking pin is also fixedly connected with an elastic component which has elasticity and can drive the auxiliary locking pin to reset, and the other end of the elastic component is fixed on the side wall of the third accommodating groove; when a key B which is not matched with the auxiliary locking pin and is matched with the locking assembly is inserted into the lock cylinder through the key hole, the auxiliary locking pin is in an unlocking state, and the key B is twisted to drive the lock cylinder and the auxiliary locking pin to rotate circumferentially so as to realize unlocking; when the key A matched with the auxiliary locking pin and the locking assembly is inserted into the lock liner through the key hole, the key A pushes the auxiliary locking pin to enable the auxiliary locking pin to be destroyed by self-destruction, the auxiliary locking pin moves towards the direction of the entrance of the key hole under the action of the elastic force of the elastic component to enable the first matching part and the second matching part to be staggered, so that the first matching part cannot rotate along the circumferential direction of the second matching part, the auxiliary locking pin is in a locking state, the auxiliary locking pin recovers a locking function, and at the moment, the key B cannot realize unlocking due to the fact that the key B is not matched with the auxiliary locking pin.

As a preferred embodiment, further defined is: the first matching portion is a first boss, the second matching portion is a second groove, the second groove is an arc-shaped groove, a third groove matched with the first boss is arranged in the lock shell, when the self-destruction is destroyed and broken, the elastic component can push the auxiliary locking pin to slide to a locking position along the third groove, the first boss and the second groove are staggered and are located in the third groove, so that the auxiliary locking pin cannot rotate circumferentially in the third groove, the auxiliary locking pin is inserted into the lock liner, the A key can be pushed by the tooth end portion of the A key to drive the first boss to move to the position, matched with the first boss and the second groove, on the third groove, so that the auxiliary locking pin is unlocked.

As a preferred embodiment, further defined is: the first matching part is a first groove, the upper surface of one side of the first groove far away from the entrance of the key hole is a clamping surface, the second matching part is a second boss which is an arc boss, the second boss is provided with a notch, the body of the auxiliary locking pin is matched with the notch, when the self-destruction is destroyed and broken, the auxiliary locking pin slides to a locking position along the inner surface of the lock shell through the opening under the action of the elastic component, at the moment, the first groove and the second boss are staggered, the clamping surface on the auxiliary locking pin body is clamped on the opening to cause that the auxiliary locking pin can not rotate in the circumferential direction, when the A key is inserted into the lock cylinder, the auxiliary locking pin can be pushed by the end part of the A key bit and further slides to the position where the first groove is matched with the second boss along the inner surface of the lock shell so as to realize the unlocking of the auxiliary locking pin.

In the technical scheme, the auxiliary locking pin is provided with the boss or the groove, the lock shell is provided with the arc-shaped groove or the boss, the structure is safe and stable, the locking form of the auxiliary locking pin and the lock shell is more flexible and changeable, meanwhile, the anti-theft performance is enhanced, and the use requirements of different functions in different places are met.

As a preferred embodiment, further defined is: be provided with on the third storage tank be used for with self-destruction round pin joint complex fourth recess, whether the self-destruction round pin destroys absolutely all the time be in vice locking round pin with between the fourth recess, elastomeric element divide into supporting pin and first supporting spring, the supporting pin with vice locking round pin body coupling, first supporting spring with supporting pin fixed connection, first supporting spring's the other end with third storage tank lateral wall fixed connection.

When the self-destruction is destroyed, the self-destruction pin is always positioned between the auxiliary locking pin and the fourth groove, so that the normal use of the lock cylinder is not influenced by the self-destruction pin.

As a preferred embodiment, further defined is: the auxiliary locking pin is also provided with a sliding pin matched with the end part of the key bit pattern A, the sliding pin is positioned on the inner side of the auxiliary locking pin and extends into the lock container, the sliding pin is a boss protruding from the inner side of the auxiliary locking pin, and when the key A is inserted into the lock container, the end part of the key bit pattern A can push the sliding pin so as to drive the auxiliary locking pin to move; the number of the auxiliary locking pins is at least one, and the number of the accommodating grooves corresponds to that of the auxiliary locking pins.

As a preferred embodiment, further defined is: the locking subassembly is the blade combination, there is an open slot in the middle of the lock shell be equipped with in the open slot and pull out the drag, be equipped with first through-hole in the lock shell, pull out drag be equipped with the same and coaxial second through hole of first through-hole diameter, the lock courage is worn to establish first through-hole with in the second through hole the lock shell pull out drag with be equipped with main locking pin between the lock courage be equipped with the holding on the lock courage main locking pin and with first storage tank with the communicating second storage tank of third storage tank.

The locking component can be combined by blades and also can be combined by marbles and other combination forms, and the function of the AB key lock core structure is not influenced.

As a preferred embodiment, further defined is: the lock core is provided with a first elastic supporting part for supporting the main locking pin, when the key A passes through the key hole and is inserted into the lock core, the tooth pattern of the key A pushes the sliding pin to drive the auxiliary locking pin to slide to an unlocking state, the blade assembly moves transversely or vertically to enable the grooves of the blade assembly to form a straight line in the longitudinal direction, at the moment, the key A twists the lock core to enable the main locking pin and the lock shell to extrude with each other and move downwards to the longitudinal grooves of the blade assembly to achieve unlocking, and when the key A is twisted back and pulled out, the main locking pin can restore to the original position under the action of the first elastic supporting part.

As a preferred embodiment, further defined is: the left side and the right side of the main locking pin are provided with a first protruding part and a second protruding part, the lock liner is provided with a fifth groove which is matched with the first protruding part in an inserting manner when in an unlocking state, the lock liner is provided with a sixth groove which is matched with the second protruding part in an inserting manner when in an unlocking state, a seventh groove which is matched with the first elastic supporting component is arranged below the main locking pin, the upper end part of the main locking pin is provided with a third matching part which is matched with the first through hole and is provided with a chamfer, the first through hole is provided with an eighth groove which is matched with the third matching part, the eighth groove is a bevel groove, the second through hole is provided with a ninth groove, the middle of the third matching part is integrally provided with a fourth matching part which is matched with the ninth groove, when the A key is inserted into the lock liner, the A key is twisted, the main locking pin and the bevel on the eighth groove are mutually extruded and move down to the longitudinal groove of the blade combination, the second protruding part and the first protruding part respectively fall into the fifth groove and the sixth groove so as to realize unlocking.

In this technical scheme, during the unblock state, the main locking round pin moves down to fall into on the vertical recess of blade combination, this moment fourth cooperation portion on the main locking round pin still with pull out and drag ninth recess on and cooperate, rotate the lock courage this moment, the main locking round pin can drive pull out and drag to rotate together in order to realize the unblock.

As a preferred embodiment, further defined is: the upper and lower parts of the first elastic supporting part are respectively provided with a second supporting spring and a supporting seat, the lower end of the supporting seat is connected with the lock cylinder, the upper end of the supporting seat is connected with the second supporting spring, the second supporting spring is directly connected with the seventh groove in an adaptive manner, the main locking pin is far away from one end of the key hole inlet, the second elastic supporting part capable of enabling the main locking pin to reset is fixedly arranged at one end of the key hole inlet, the second bulge is used for inserting the A key into the lock cylinder, the tooth end part of the A key pushes the main locking pin to drive the main locking pin to compress the second elastic supporting part and the auxiliary locking pin, and the sliding pin slides to an unlocking state along the inserting direction of the A key to realize unlocking.

As a preferred embodiment, further defined is: the second elastic supporting component is divided into a third protruding part and a third supporting spring, the third protruding part is connected with the main locking pin in an integrated mode, one end of the third supporting spring is connected with the third protruding part, the other end of the third supporting spring is in contact with the side wall of the lock container in a propping mode, the main locking pin and the auxiliary locking pin are arranged on the A key and are completely inserted into the lock container, the tooth end part of the A key pushes the second elastic supporting component and stretches or compresses the elastic component to enable the main locking pin and the auxiliary locking pin to be in an unlocking state simultaneously.

As a preferred embodiment, further defined is: the two auxiliary locking pins are symmetrically arranged on two sides of the lock liner; the two first elastic supporting components are respectively positioned at the left side and the right side of the lower end of the main locking pin.

As a preferred embodiment, further defined is: the blade combination is divided into four groups, each group of blades is respectively positioned in the first accommodating groove, and each group of blades consists of a blade body and a blade spring for controlling the blade body to move transversely or longitudinally.

As a preferred embodiment, further defined is: the blade combination is completely positioned in the pulling device.

The beneficial effects of the invention are as follows:

1. the auxiliary locking pin in the invention is provided with the self-destruction pin, the self-destruction pin can lock the auxiliary locking pin in an unlocking state, the key B can realize unlocking at the moment, when the key A is inserted into the lock liner, the tooth pattern at the end part of the key A is contacted with the sliding pin on the auxiliary locking pin, the end part of the tooth pattern of the key A can push the sliding pin to drive the auxiliary locking pin to move so as to destroy the auxiliary locking pin, the auxiliary locking pin moves towards the direction of the entrance of the key hole under the pushing of the elastic force of the elastic component so as to cause the first matching part and the second matching part to be staggered, at the moment, the auxiliary locking pin recovers the locking function, the key B can not realize unlocking any more, and the safety is high.

2. When the lock is in a locked state, the boss or the groove on the auxiliary locking pin is staggered with the arc-shaped groove or the boss on the lock shell, and the clamping surface of the boss on the auxiliary locking pin, which is positioned in the sliding groove in the lock shell or on one side of the groove on the auxiliary locking pin, is clamped with the notch, so that the auxiliary locking pin cannot rotate; during the unblock state, boss or recess on the vice locking pin cooperate with the arc recess on the lock shell, make vice locking pin can be year lock courage rotate, and structure safety and stability, design benefit is nimble, has strengthened the theftproof nature again simultaneously, satisfies the use of the different function demands in different places.

3. Only when main locking round pin and vice locking round pin are in the unblock state simultaneously can realize unblanking, dual guarantee, the security is higher.

4. When the key A is inserted into the lock liner, the tooth of the key A can simultaneously push the main locking pin and the auxiliary locking pin to move for a certain distance, and then the main locking pin and the auxiliary locking pin are in an unlocking state, and the distance is not estimated easily, so that the replication complexity of the key A is increased, and the safety of the lock core structure is improved.

5. The length and the position of the sliding pin on the auxiliary locking pin can be flexibly set according to different conditions, so that the duplication of the key tooth A matched with the sliding pin is more complicated, and the safety of the lock core structure is improved.

6. The blade combination or the marble combination is completely positioned in the pulling mop, so that the lock core has small and compact structure and higher anti-theft property.

[ description of the drawings ]

FIG. 1 is a schematic structural diagram of the invention;

FIG. 2 is an exploded view of the present invention;

FIG. 3 is a schematic view of the secondary locking pin being locked in an unlocked condition by the self-destruct pin;

FIG. 4 is a schematic view of the secondary locking pin resuming locking function after self-destruction and destruction;

FIG. 5 is an enlarged schematic view of FIG. 3A;

FIG. 6 is an enlarged schematic view of FIG. 4B;

FIG. 7 is a schematic view of a key B in cooperation with the present invention;

FIG. 8 is a schematic view of the key A in cooperation with the present invention;

FIG. 9 is a schematic comparison of an AB key;

FIG. 10 is a schematic view of the primary locking pin being unable to slide in the direction of the keyway;

FIG. 11 is a schematic view of the primary lock pin in an unlocked state slidable in the direction of the keyway;

FIG. 12 is a schematic view of the primary lock pin in an unlocked condition in which it is slidable in the direction of the keyway;

FIG. 13 is a schematic sectional view taken along line A-A in FIG. 12;

FIG. 14 is a schematic view of another form of engagement of the inventive secondary locking pin;

FIG. 15 is an enlarged view of a secondary locking pin of another alternative form of the invention;

fig. 16 is a schematic sectional view taken along line B-B in fig. 10.

[ detailed description ] embodiments

The invention is described in further detail below with reference to the following figures and detailed description:

as shown in fig. 1 to 4, a lock core structure with AB key function includes a lock case 1 and a pull drawer 2, wherein an open slot is formed in the middle of the lock case 1, the pull drawer 2 is disposed in the open slot, a lock core 3 which can rotate relative to the lock case 1 is disposed in the lock case 1, a blade assembly which is adapted to a key bit is disposed in the lock core 3, a key hole 31 for inserting an AB key and a first receiving groove 32 for receiving the blade assembly are disposed at one end of the lock core 3, a third receiving groove 34 which is communicated with the first receiving groove 32 is disposed on one side of the first receiving groove 32 far away from an entrance of the key hole 31, a first through hole 11 is disposed in the lock case 1, a second through hole 21 which has the same diameter and is coaxial with the first through hole is disposed in the pull drawer, and the lock core 3 is disposed in the first through hole 11 and the second through hole 21, a main locking pin 5 is arranged between the lock case 1, the pulling handle 2 and the lock liner 3, a second accommodating groove 33 which is used for accommodating the main locking pin 5 and communicated with the first accommodating groove 32 and the third accommodating groove 34 is arranged on the lock liner 3, an auxiliary locking pin 6 which can synchronously rotate with the lock liner 3 is arranged in the third accommodating groove 34, a self-destruction pin 61 which is clamped with the lock liner 3 and a first boss 621 which is matched with the lock case 1 are fixed at the upper end of the auxiliary locking pin 6, a fourth groove 341 which is used for being clamped and matched with the self-destruction pin 61 is arranged on the third accommodating groove 34, a second groove 121 which is matched with the first boss 621 is arranged in the lock case 1, the second groove 121 is an arc-shaped groove, the auxiliary locking pin 6 is locked in an unlocking state by the self-destruction pin 61, and at the moment, the first boss just can circumferentially rotate along the second groove 121, the inside of the auxiliary locking pin 6 is also fixed with a sliding pin 63 matched with the end of the tooth of the key a 9, the auxiliary locking pin 6 is far away from one end of the entrance of the key hole 31 fixedly connected with an elastic part 7 capable of pushing the auxiliary locking pin 6 to reset, the elastic part 7 is divided into a supporting pin 71 and a first supporting spring 72, the supporting pin 71 is fixedly connected with the auxiliary locking pin 6, the first supporting spring 72 is fixedly connected with the supporting pin 71, and the other end of the first supporting spring 72 is fixedly connected with the side wall of the third accommodating groove.

Further, as shown in fig. 7 to 8, when the B key 10, which is not adapted to the secondary locking pin 6 but adapted to the blade combination, is inserted into the cylinder core 3 through the key hole 31, since the secondary locking pin 6 is in an unlocked state, the B key 10 is twisted to drive the cylinder core 3 and the secondary locking pin 6 to circumferentially rotate along the second groove 121 along with the first boss 621, so as to achieve unlocking; when the a key 9 matched with the combination of the auxiliary locking pin 6 and the blade is inserted into the cylinder core 3 through the key hole 31, the end of the tooth of the a key 9 pushes the sliding pin 63 to break the self-destruction pin 61, the auxiliary locking pin 6 moves in the direction of the entrance of the key hole 31 under the pushing of the elastic force of the first supporting spring 72, so that the first boss 621 is misaligned with the second groove 121, the first boss 62 cannot rotate circumferentially along the second groove 12, the auxiliary locking pin 6 recovers the locking function, and at this time, the B key cannot be unlocked because of not being matched with the auxiliary locking pin 6.

In this embodiment, as shown in fig. 9, the end of the teeth of the a-key 9 is longer than the end of the teeth of the B-key 10 by a portion, and the length of the extended portion can be adjusted according to design requirements, thereby increasing the security against theft.

In this embodiment, when the self-destruction pin 61 is destroyed, the self-destruction pin 61 is always located between the secondary locking pin 6 and the fourth groove 341, so that the self-destruction pin 61 does not affect the normal use of the entire lock cylinder.

In this embodiment, a third groove 13 adapted to the first boss 621 is disposed in the lock case 1, and after the self-destruction pin 61 is destroyed, the elastic member pushes the auxiliary locking pin 6 to slide along the third groove 13, so that the first boss 621 and the second groove 12 are dislocated, and the first boss 621 is located in the third groove 13, so that the first boss 621 cannot rotate circumferentially, and at this time, the auxiliary locking pin is in a locked state. When the a-key 9 is inserted into the cylinder core 3 through the keyhole 31, the end of the a-key 9 bit will push the sliding pin 63 to move the first boss 621 along the third groove 13 to the position where the first boss 62 is matched with the second groove 12, so that the secondary locking pin 6 is in the unlocked state.

In this embodiment, the tooth of B lock 10 can only with a plurality of blade combination adaptation to realize that the blade makes vertical or horizontal removal makes the recess that blade combination 4 set up is on a straight line vertically, works as self-destruction round pin 61 pins when vice locking pin 6 is in the unblock state position, when the B lock inserts in lock courage 3, the blade combination has formed the recess on a straight line, and direct wrench movement B key this moment can drive lock courage 3 with vice locking pin 6 circumferential direction rotates realizes unblanking. When the a-lock 9 is inserted into the cylinder core 3, since the a-lock 9 has a tooth end portion adapted to the sliding pin, when the a-lock 9 is inserted into the cylinder core 3, the tooth end portion of the a-lock 9 can push the sliding pin 61, so as to drive the entire auxiliary locking pin 6 to move along the insertion direction of the a-lock, and further destroy the self-destruction pin 61, at this time, the auxiliary locking pin 6 is pushed by the elastic force of the elastic member 7 to move along the groove 13 toward the entrance of the keyhole 31, so that the first boss 621 and the second groove 121 are dislocated, at this time, the auxiliary locking pin 6 recovers the locking function, when the a-key is inserted into the cylinder core 3, it is possible to simultaneously make the main locking pin 5 and the auxiliary locking pin 6 in the unlocking state, and when the a-key is twisted, when the B-key is inserted into the cylinder core 3, because the key B10 does not have a tooth pattern matched with the sliding pin 63, the key B cannot push the sliding pin 63 and further cannot push the auxiliary locking pin 6 to an unlocking state, so that unlocking cannot be realized, and the safety of the lock cylinder is improved.

Fig. 3 and 5 are schematic diagrams illustrating that the self-destruction pin 61 locks the secondary locking pin 6 in an unlocked state, at this time, the first boss 621 is at an unlocked position matched with the second groove 121, as shown in an enlarged view of fig. 9, the self-destruction pin 61 is matched with the fourth groove 341 at the top of the third containing groove 34, so that the entire secondary locking pin is in an unlocked state, fig. 4 and 6 are schematic diagrams illustrating a state when the secondary locking pin recovers a locking function after self-destruction, it can be seen from the schematic diagrams that, after the self-destruction pin 61 is destroyed, the secondary locking pin 6 slides along the third groove 13 toward the blade assembly under the action of the first support spring 72, a position where the secondary locking pin 6 slides for a distance and is stationary is an initial position where the secondary locking pin recovers the locking function, as shown in an enlarged view of fig. 10, an intersection of the second groove 121 and the third groove 13 is a position where the first boss 621 is matched with the first groove 121, i.e. the unlocked position of the secondary locking pin 6.

Further, as shown in fig. 10 to 13, a first elastic support member 8 for supporting the main locking pin 5 is disposed on the cylinder 3, when the a key 9 is inserted into the cylinder 3 through the keyhole 31, the teeth of the a key 9 push the sliding pin 63 to slide the auxiliary locking pin 6 to the unlocking state, and the blade assembly moves horizontally or vertically to make the grooves of the blade assembly form a straight line in the longitudinal direction, at this time, the a key 9 twists the cylinder to make the main locking pin 5 and the lock case press against each other and move down to the longitudinal groove of the blade assembly to achieve unlocking, and when the a key 9 is twisted back and pulled out, the main locking pin 5 will return to the original position under the action of the first elastic support member 8.

The unlocking form with respect to the main locking pin 5 can also be divided into two types:

in a first form, as shown in fig. 10, the first elastic supporting member 8 is a spring, the main locking pin 5 cannot slide in the second receiving groove 33 along the direction of inserting the key, when the A key 9 is inserted into the cylinder 3, the teeth of the A key 9 push the sliding pin 61 so that the sub locking pin slides to the unlocking state, meanwhile, the blade combination moves transversely or vertically to enable the grooves arranged on the blade combination to be in a straight line in the longitudinal direction, the key A9 is twisted, the main locking pin 5 is pressed with the inner side surface of the lock shell 1 to enable the main locking pin 5 to fall onto the grooves of the blade combination, further, the lock cylinder 3 and the components including the main lock pin 5 and the sub lock pin 6 therein are simultaneously rotated to be unlocked, when the a-key 9 is twisted back to the initial position, the main locking pin 5 slides upwards to the initial position under the action of the spring 8.

In a second form, as shown in fig. 6 to 13 and 16, a main lock pin 5 can slide in the second receiving groove 33 along the direction of inserting the key, the left and right sides of the main lock pin 5 are provided with a first protrusion 51 and a second protrusion 53, the lock core 3 is provided with a fifth groove 35 which is in insertion fit with the first protrusion 51 in the unlocked state, the lock core 3 is provided with a sixth groove 36 which is in insertion fit with the second protrusion 53 in the unlocked state, a seventh groove 52 which is in fit with the first elastic support member 8 is provided below the main lock pin 5, the upper end of the main lock pin 5 is a third fitting portion 54 with a chamfered slope which is in fit with the first through hole 11, the first through hole 11 is provided with an eighth groove 124 which is in fit with the third fitting portion 54, the eighth groove 124 is a slope groove, the second through hole 21 is provided with a ninth groove 22, the middle of the third matching part 54 is integrally provided with a fourth matching part 55 matched with the ninth groove 22, when the key A9 is inserted into the lock cylinder 3, the key A9 is twisted, the inclined surfaces of the third matching part 54 and the eighth groove 124 on the main locking pin 5 are mutually extruded to enable the main locking pin 5 to fall into the longitudinal groove formed by the blade combination, and the second protruding part 53 and the first protruding part 51 respectively fall into the fifth groove 35 and the sixth groove 36, so that unlocking is realized. The upper portion and the lower portion of the first elastic supporting part 8 are respectively provided with a second supporting spring 82 and a supporting seat 81, the lower end of the supporting seat 81 is connected with the lock cylinder 3, the upper end of the supporting seat 81 is connected with the second supporting spring 82, the second supporting spring 82 is directly in adaptive connection with the seventh groove 52, one end, far away from the entrance of the key hole 31, of the main locking pin 5 is fixedly provided with a second elastic supporting part 56 capable of enabling the main locking pin 5 to reset, when the key A9 is inserted into the lock cylinder 3, the tooth end of the key A9 simultaneously pushes the second bulge part 53 to drive the main locking pin 5 to compress the second elastic supporting part 56 and the sliding pin 63 on the auxiliary locking pin 6 to slide to an unlocking state along the inserting direction of the key A9 and then twist the key A9 to realize unlocking.

Furthermore, the second elastic supporting member 56 is divided into a third protruding portion 561 and a third supporting spring 562, the third protruding portion 561 is integrally connected with the main locking pin 5, one end of the third supporting spring 562 is connected with the third protruding portion 561, the other end of the third supporting spring 562 is abutted against the side wall of the lock core 3, when the a key 9 is completely inserted into the lock core 3, the end of the tooth of the a key 9 pushes the second protruding portion 53 to drive the main locking pin 5 to compress the third supporting spring 562 and push the auxiliary locking pin 6 to move, so that the main locking pin 5 and the auxiliary locking pin 6 are simultaneously in an unlocked state.

In this technical solution, one end of the third supporting spring 562 is abutted against the side wall of the lock cylinder 3, and when the main locking pin 5 is in an unlocked or locked state, the third supporting spring 562 rubs against the side wall of the lock cylinder 3 in the up-and-down moving process because the main locking pin 5 moves up and down or can be caused.

All included the unblock to vice locking pin 6 in the unblock form of above two kinds of main locking pins 5 for originally having AB function lock core structure and having dual guarantee function, improved main locking pin 5 in the second kind of unblock form simultaneously, increased and must let when A key 9 inserts in the lock courage 3 on main locking pin 5 moves the longitudinal groove that just can fall into the blade combination after a distance, the theftproof nature is more firm, and the security is higher.

In the above embodiment, the first boss 621 of the secondary locking pin 6 may also be changed into a groove form to cooperate with the lock case 1 to achieve the unlocking and locking functions, and the specific scheme is as follows: as shown in fig. 2 and 14 to 15, a first groove 622 penetrating up and down is formed on an outer side surface of the auxiliary locking pin 62, an engaging surface 64 is formed on an upper surface of a side of the first groove 622 away from an entrance of the keyhole 31, a second boss 122 matching with the first groove 622 is formed on the lock case 1, the second boss 122 is an arc-shaped boss, a notch 123 is formed on the second boss 122, a body of the auxiliary locking pin 6 matches with the notch 123, after the self-destruction pin 61 is destroyed, the elastic member 7 pushes the auxiliary locking pin 6 to slide along the inner surface of the lock case 1 to a locking position through the notch 123, at this time, the first groove 622 and the second boss 122 are dislocated, the engaging surface 64 on the body of the auxiliary locking pin 6 is clamped on the notch 123 to cause the auxiliary locking pin 6 to be unable to rotate circumferentially, and when the a key 9 is inserted into the lock cylinder 3 through the keyhole 31, the end of the a-key 9 bit will push the sliding pin 63 to slide the auxiliary locking pin 6 along the inner surface of the lock case 1 to the position where the first recess 622 and the second boss 122 are engaged, so that the auxiliary locking pin 6 is in the unlocked state.

In this embodiment, two secondary locking pins are symmetrically arranged on two sides of the lock cylinder 3; the number of the first elastic support members 8 is two, and the two first elastic support members are respectively positioned on the left side and the right side of the lower end of the main locking pin 5. The blade combination is divided into four groups, each group comprises 3 blades, and the blades are respectively positioned in the first accommodating groove 32, and each group of blades comprises a blade body 41 and a blade spring 42 for controlling the blade body 41 to move transversely or longitudinally. The blades 4 are all positioned in the pulling device 2, so that the lock cylinder is small and compact in structure and higher in anti-theft performance.

Claims (13)

1. The lock core structure with the AB key function comprises a lock shell (1), wherein a lock liner (3) which can rotate relative to the lock shell (1) is arranged in the lock shell (1), a locking assembly (4) matched with a key bit pattern is arranged in the lock liner (3), one end of the lock liner (3) is provided with a key hole (31) for inserting the AB key and a first accommodating groove (32) for accommodating the locking assembly (4), one side, far away from an entrance of the key hole (31), of the first accommodating groove (32) on the lock liner (3) is provided with a third accommodating groove (34) communicated with the first accommodating groove (32), an auxiliary locking pin (6) which can synchronously rotate with the lock liner (3) and is matched with an A key (9) is arranged in the third accommodating groove (34), and is characterized in that the auxiliary locking pin (6) is fixedly provided with a self-destruction pin (61) clamped with the lock liner (3) and a first matching part matched with the lock shell (1), a second matching part matched with the first matching part is arranged in the lock shell (1), the auxiliary locking pin (6) is locked in an unlocking state by the self-destruction pin (61), and the first matching part can circumferentially rotate along the second matching part at the moment; the auxiliary locking pin (6) is also fixedly connected with an elastic component (7) which has elasticity and can drive the auxiliary locking pin (6) to reset, and the other end of the elastic component (7) is fixed on the side wall of the third accommodating groove (34); when a key B (10) which is not matched with the auxiliary locking pin (6) and is matched with the locking assembly (4) is inserted into the lock cylinder through the key hole (31), the key B is twisted to drive the lock cylinder (3) and the auxiliary locking pin (6) to rotate circumferentially so as to realize unlocking; when the key A (9) matched with the auxiliary locking pin (6) and the locking component (4) is inserted into the lock container (3) through the key hole (31), the key A (9) pushes the auxiliary locking pin (6) to enable the self-destruction pin (61) on the auxiliary locking pin (6) to be destroyed, the auxiliary locking pin (6) moves towards the entrance of the key hole (31) under the elastic action of the elastic component (7) to enable the first matching part and the second matching part to be dislocated, so that the first matching part cannot rotate along the circumferential direction of the second matching part, and the auxiliary locking pin is in a locking state.

2. The lock core structure with the AB key function of claim 1, wherein the first matching portion is a first boss (621), the second matching portion is a second groove (121), the second groove (121) is an arc-shaped groove, a third groove (13) matched with the first boss (621) is arranged in the lock case (1), after the self-destruction pin (61) is destroyed, the elastic component (7) can push the auxiliary locking pin (6) to slide to a locking position along the third groove (13), so that the first boss (621) and the second groove (121) are staggered and are positioned in the third groove (13) to cause the auxiliary locking pin (6) to be incapable of circumferentially rotating, and the auxiliary locking pin (6) can be pushed by the tooth end of the A key (9) when the A key (9) is inserted into the lock cylinder (3) to drive the first boss (621) to move upwards along the third groove (13) Moving to the position where the first boss (621) is matched with the second groove (121) to unlock the secondary locking pin (6).

3. The lock core structure with the AB key function as claimed in claim 1, wherein the first engaging portion is a first groove (622), the upper surface of the first groove (622) on the side away from the entrance of the key hole (31) is an engaging surface (64), the second engaging portion is a second boss (122), the second boss (122) is an arc-shaped boss, a notch (123) is formed in the second boss, the body of the secondary locking pin (6) is engaged with the notch (123), when the self-destruction pin (61) is destroyed, the secondary locking pin (6) slides to a locking position along the inner surface of the lock case (1) through the notch (123) under the action of the elastic component (7), at the moment, the first groove (622) is dislocated with the second boss (122), and the engaging surface (64) on the body of the secondary locking pin (6) is stuck on the notch (123) to cause the secondary locking pin (6) to be unable to circumferentially lock the secondary locking pin (6) When the A key (9) is inserted into the lock cylinder (3), the auxiliary locking pin (6) is pushed by the end of the A key (9) teeth to slide along the inner surface of the lock shell (1) to a position where the first groove (622) and the second boss (122) are matched so as to realize unlocking of the auxiliary locking pin (6).

4. The key cylinder structure with the AB key function according to any one of claims 1 to 3, wherein a fourth groove (341) for snap-fitting with the self-destruction pin (61) is provided in the third receiving groove (34), the self-destruction pin (61) is always located between the sub-locking pin (6) and the fourth groove (341) regardless of whether it is destroyed, the elastic member (7) is divided into a supporting pin (71) and a first supporting spring (72), the supporting pin (71) is integrally connected with the sub-locking pin (6), the first supporting spring (72) is fixedly connected with the supporting pin (71), and the other end of the first supporting spring (72) is fixedly connected with the side wall of the third receiving groove.

5. The lock core structure with AB key function of claim 4, characterized in that the secondary lock pin (6) is further provided with a sliding pin (63) matching with the end of the A key (9) bit, the sliding pin (63) is located inside the secondary lock pin (6) and extends into the lock cylinder (3), when the A key is inserted into the lock cylinder (3), the end of the A key bit pushes the sliding pin (63) to drive the secondary lock pin to move; the number of the auxiliary locking pins (6) is at least one, and the number of the accommodating grooves (34) corresponds to the number of the auxiliary locking pins (6).

6. A lock cylinder structure with AB key function as claimed in claim 5, the locking component (4) is a blade combination, an open slot is arranged in the middle of the lock shell (1), a pulling lug (2) is arranged in the open slot, a first through hole (11) is arranged in the lock shell (1), a second through hole (21) which has the same diameter as the first through hole (11) and is coaxial with the first through hole is arranged in the pulling mop, the lock core (3) is arranged in the first through hole (11) and the second through hole (21) in a penetrating way, a main locking pin (5) is arranged among the lock shell (1), the pulling mop (2) and the lock liner (3), and a second accommodating groove (33) which is used for accommodating the main locking pin (5) and communicated with the first accommodating groove (32) and the third accommodating groove (34) is formed in the lock liner (3).

7. A lock cylinder structure with AB key function as claimed in claim 6, a first elastic supporting component (8) for supporting the main locking pin (5) is arranged on the lock core (3), when the A key (9) is inserted into the cylinder core (3) through the key hole (31), the teeth of the key A (9) push the sliding pin (63) to drive the auxiliary locking pin (6) to slide to an unlocking state, the blade combination moves transversely or vertically to enable the grooves of the blade combination to be in a straight line in the longitudinal direction, at the moment, the key A (9) twists the lock cylinder to enable the main locking pin (5) and the lock shell (1) to be mutually pressed and move downwards to the longitudinal grooves of the blade combination to realize unlocking, when the key A (9) is twisted back and pulled out, the main locking pin (5) can be restored to the original position under the action of the first elastic supporting part (8).

8. The lock core mechanism according to claim 7, wherein the main lock pin (5) has a first protrusion (51) and a second protrusion (53) on both left and right sides, the lock cylinder (3) has a fifth groove (35) mating with the first protrusion (51) in the unlocked state, the lock cylinder (3) has a sixth groove (36) mating with the second protrusion (53) in the unlocked state, a seventh groove (52) mating with the first elastic support member (8) is provided below the main lock pin (5), a third mating portion (54) mating with the first through hole (11) and having a chamfer is provided at an upper end of the main lock pin (5), an eighth groove (124) mating with the third mating portion (54) having a chamfer is provided at the first through hole (11), and the eighth groove (124) is a groove, be equipped with ninth recess (22) on second through hole (21), an organic whole is equipped with fourth cooperation portion (55) with ninth recess (22) looks adaptation in the middle of third cooperation portion (54) A key (9) insert when lock courage (3), twist A key (9), main locking pin (5) with inclined plane on eighth recess (124) extrudees each other and moves down on the vertical recess of locking Assembly (4), second bulge (53) with first bulge (51) fall into respectively fifth recess (35) with thereby realize the unblock in sixth recess (36).

9. The lock cylinder mechanism as claimed in claim 8, wherein the first resilient supporting member (8) is a second supporting spring (82) and a supporting seat (81) at the upper and lower portions thereof, the supporting seat (81) is connected to the cylinder (3) at the lower end thereof, the supporting seat (81) is connected to the second supporting spring (82) at the upper end thereof, the second supporting spring (82) is directly connected to the seventh recess (52) in a fitting manner, a second resilient supporting member (56) for returning the main locking pin (5) is fixed to the end of the main locking pin (5) away from the entrance of the key hole (31), and the second protrusion (53) is pushed by the end of the key bit when the key A (9) is inserted into the cylinder (3) to drive the main locking pin (5) to compress the second resilient supporting member (56) and the sliding pin (63) of the auxiliary locking pin (6) along the key A (9) The direction of insertion is simultaneously slid to the unlocked state to effect unlocking.

10. A lock cylinder mechanism according to claim 9, characterized in that the second resilient support member (56) is divided into a third projection (561) and a third support spring (562), the third projecting part (561) is integrally connected with the main locking pin (5), one end of the third supporting spring (562) is connected with the third projecting part (561), the other end of the third supporting spring (562) is pressed against the side wall of the lock core (3), the main locking pin (5) and the auxiliary locking pin (6) are pushed by the tooth end part of the key A (9) when the key A (9) is completely inserted into the lock liner (3) so as to compress the second elastic supporting component (56) and stretch or compress the elastic component (7) to enable the main locking pin (5) and the auxiliary locking pin (6) to be in an unlocked state simultaneously.

11. A lock core structure according to claim 7, characterized in that, the secondary locking pins are two and symmetrically arranged at two sides of the lock core (3); the number of the first elastic supporting parts (8) is two, and the two first elastic supporting parts are respectively positioned on the left side and the right side of the lower end of the main locking pin (5).

12. The lock cylinder structure according to any one of claims 6 to 11, wherein the blade combination is divided into four groups of 3 pieces each positioned in the first receiving groove (32), each group of blades being composed of a blade body (41) and a blade spring (42) for controlling the lateral or longitudinal movement of the blade body (41).

13. A lock core arrangement according to claim 12, characterized in that the blade combination is located entirely in the pull out drawer (2).

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