阅读说明：本技术 一种智能防盗车锁及防盗控制方法 (Intelligent anti-theft vehicle lock and anti-theft control method ) 是由 刘岩 刘忠泠 李鹏飞 于 2020-05-30 设计创作，主要内容包括：一种智能防盗车锁及防盗控制方法,属于智能锁具技术领域。包括锁圈(1)和锁梁(3),在锁梁(3)内设置有锁体(6),在锁体(6)内还设置有与钥匙配合的弹子,其特征在于：在锁梁(3)内设置有控制电路；在所述锁圈(1)与锁梁(3)分别设置有防剪线,防剪线随锁圈(1)和锁梁(3)形成锁定闭环首尾对接形成防剪线圈,防剪线圈的两端接入控制电路中；在所述锁体(6)内设置有与弹子一一对应并由弹子触发的触点开关(24),触点开关(24)分别接入控制电路中。在本智能防盗车锁及防盗控制方法中,通过设置控制电路以及防剪线圈,提高了车锁自身的防盗性能,同时将锁体内的弹子与控制电路结合,提高了钥匙与控制电路的搭配关系。(An intelligent anti-theft vehicle lock and an anti-theft control method belong to the technical field of intelligent locks. Including lock ring (1) and lock beam (3), be provided with lock body (6) in lock beam (3), still be provided with in lock body (6) with key complex pellet shot from a slingshot, its characterized in that: a control circuit is arranged in the lock beam (3); the lock ring (1) and the lock beam (3) are respectively provided with anti-shearing lines, the anti-shearing lines form a locking closed loop along with the lock ring (1) and the lock beam (3) and are butted end to form an anti-shearing coil, and two ends of the anti-shearing coil are connected into a control circuit; contact switches (24) which correspond to the marbles one by one and are triggered by the marbles are arranged in the lock body (6), and the contact switches (24) are respectively connected into the control circuit. According to the intelligent anti-theft vehicle lock and the anti-theft control method, the control circuit and the anti-shearing coil are arranged, so that the anti-theft performance of the vehicle lock is improved, and meanwhile, the balls in the lock body are combined with the control circuit, so that the matching relation between a key and the control circuit is improved.)

1. The utility model provides an intelligence theftproof lock, includes lock collar (1) and lock beam (3), the both ends correspondence of lock collar (1) are packed into and are formed the locking closed loop in the jack at lock beam (3) both ends, are provided with lock body (6) in lock beam (3), still be provided with in lock body (6) with key complex pellet shot from a slingshot, the locking of locking closed loop is realized and is opened its characterized in that in key rotation lock body (6): a control circuit is arranged in the lock beam (3); anti-shearing lines are respectively arranged in the lock ring (1) and the lock beam (3), after the lock ring (1) and the lock beam (3) are connected to form a locking closed loop, the lock ring (1) and the anti-shearing lines in the lock beam (3) are butted end to form an anti-shearing coil, and two ends of the anti-shearing coil are connected into a control circuit; contact switches (24) which correspond to the marbles one by one and are triggered by the marbles are arranged in the lock body (6), and the contact switches (24) are respectively connected into the control circuit.

2. The intelligent anti-theft vehicle lock of claim 1, characterized in that: bosses are arranged at the hole bottoms of the insertion holes at the two ends of the lock beam (3), the anti-shearing lines arranged in the lock beam (3) comprise two sections of lock beam anti-shearing lines (7), one end of each lock beam anti-shearing line (7) is connected into the control circuit, and the other end of each lock beam anti-shearing line is connected to the surface of each boss; the end of the lock ring (1) is provided with a groove corresponding to the boss, the end of the lock ring anti-shearing line (2) arranged in the lock ring (1) is connected into the groove, and the lock beam anti-shearing line (7) and the lock ring anti-shearing line (2) are communicated along with the contact of the boss and the groove.

3. The intelligent antitheft vehicle lock of claim 2, characterized in that: a lock beam insulating sleeve (14) is arranged at the center of the boss, a fixed contact (15) protruding out of the surface of the boss is arranged in the lock beam insulating sleeve (14), and a lock beam shear line (7) is connected with the fixed contact (15);

a lock ring insulating sleeve (12) is arranged in the groove, a cavity for accommodating the fixed contact (15) is arranged in the lock ring insulating sleeve (12), an elastic contact (11) which is in contact with the fixed contact (15) is placed in the cavity, and the lock ring anti-shearing line (2) is connected with the elastic contact (11).

4. The intelligent antitheft vehicle lock of claim 2, characterized in that: and a sealing ring (13) is also arranged on the contact surface of the boss and the groove.

5. The intelligent anti-theft vehicle lock of claim 1, characterized in that: a main lock head (5) and an auxiliary lock head (9) for locking the lock ring (1) are respectively arranged in the jacks at the two ends of the lock beam (3), the lock body (6) is positioned below the main lock head (5), and a lock core (16) which rotates along with a key in the lock body (6) is led out from the end part of the lock body (6) and is connected with the main lock head (5); the main lock head (5) is connected with the auxiliary lock head (9) through a pull rope (27), and a torsion spring (28) for realizing the reset of the auxiliary lock head (9) is arranged at a rotating shaft of the auxiliary lock head (9).

6. The intelligent anti-theft vehicle lock of claim 1, characterized in that: the contact switch (24) is arranged at the tail part of the corresponding marble, the spring which simultaneously extrudes the contact switch (24) and the corresponding marble is also arranged behind the marble, and the terminal of the contact switch (24) penetrates through the spring and then is connected into the control circuit.

7. The intelligent anti-theft vehicle lock of claim 1 or 6, characterized in that: the lock comprises a lock body (6), a plurality of detection pins (21) and end pins (17), wherein the main pins (26) are arranged along the radial direction of a lock core (16) in the lock body (6) and are arranged side by side along the axial direction of the lock core (16), the detection terminals (21) are arranged along the radial direction of the lock core (16) and are positioned opposite to the main pins (26), and the end pins (17) are positioned at the tail end of the lock core (16) and are arranged along the axis of the lock core (16);

the contact switch (24) corresponding to the end marble (17) is led out through an end marble signal wire (19), the contact switch (24) corresponding to the detection marble (21) is led out through a detection marble signal wire (20), and the contact switches (24) corresponding to the main marbles (26) are respectively led out through main marble signal wires (18) which are in one-to-one correspondence.

8. The intelligent anti-theft vehicle lock of claim 1, characterized in that: the lock beam (3) is internally provided with an electric cavity (8), the control circuit is arranged in the electric cavity (8), the control circuit comprises a microprocessor, a current sensor, a wireless communication module, a buzzer and an indicator light, a contact switch (24) corresponding to the marble is connected with the input end of the microprocessor through a lead respectively, a shearing prevention coil is connected with the current sensor, the current sensor is connected with the signal input port of the microprocessor, the signal output port of the microprocessor is connected with the buzzer and the indicator light, and the input output port of the microprocessor is connected with the wireless communication module in a two-way mode.

9. The intelligent antitheft vehicle lock of claim 5, wherein: the upper parts of the main lock head (5) and the auxiliary lock head (9) are respectively provided with an annular sealing air bag (4), and the sealing air bags (4) are embedded in the inner walls of the corresponding jacks.

10. An anti-theft control method implemented by using the intelligent anti-theft vehicle lock of any one of claims 1 to 9, characterized in that: the method comprises the following steps:

step a, after the key is normally pulled out, the system carries out self-checking, step b is executed after the self-checking is finished, and step i is executed if the self-checking cannot be finished;

b, entering a locking state after the system is successfully self-checked, and randomly generating a group of trigger codes aiming at the marbles by the control circuit;

c, the control circuit judges whether the current value reaches a preset threshold value according to the anti-shearing coil, if so, the step d is executed, and if not, the step h is executed;

d, judging whether the marble is triggered within a preset time period or not by the control circuit through the contact switch (24), or judging whether the change frequency of the marble within the preset time exceeds a preset threshold or not by the control circuit through the contact switch (24);

if the marble is triggered in the preset time or the change times of the marble in the preset time do not exceed the preset threshold value, executing the step e, otherwise executing the step f,

e, the control circuit judges whether the trigger state of the marble is matched with the trigger code generated in the step b, if so, the step f is executed, and if not, the step j is executed;

step f, the control circuit is switched to an unlocking state, and the data port of the anti-shearing coil is closed;

step g, the control circuit judges whether the signal of the current sensor disappears, if so, the step i is executed, and if not, the step h is executed;

h, indicating the abnormal state by the control circuit and executing the step j;

step i, the control circuit gives an alarm and executes step j;

and j, the control circuit sends the abnormal state to the server.

Technical Field

An intelligent anti-theft vehicle lock and an anti-theft control method belong to the technical field of intelligent locks.

Background

The bicycle (including the electric bicycle) is one of the most popular travel modes in the current society, and particularly, the common bicycle not only can save energy and reduce emission, but also can build the body. However, the bicycle is stolen more seriously compared with other vehicles, and one of the important reasons for the theft of the bicycle is that the anti-theft performance of the bicycle lock is poor. In the prior art, for the improvement of the anti-theft performance of the vehicle lock, the improvement of the mechanical structures such as the material and the structure of the vehicle lock and the complexity of the lock body is mainly concerned, so that the structure of the vehicle lock becomes complex, and the cost is easily increased greatly.

In recent years, with the continuous progress of science and technology, various intelligent vehicle locks also appear, however, the intelligent vehicle lock on the market mainly aims at the following schemes: (1) the state of the lock is sensed by various sensors (such as a vibration sensor); (2) relying on various biometric information (e.g., fingerprints). (3) It relies on network-level information push technology. However, the above solutions generally have the disadvantage of being too dependent on various electronic components and circuits, and therefore have poor reliability, while the lock itself has not been improved, especially with regard to the anti-theft performance of the violently damaged lock. In addition, the intelligent vehicle lock in the prior art does not reasonably solve the matching relationship between the key and the control circuit, and the mechanical unlocking and the intelligent unlocking of the vehicle lock are not reasonably combined, so that the intelligent vehicle lock in the market at present stays at the conceptual stage more, or only emphasizes the advancement of the technical theory, but the actual product does not have a good effect in the using process.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: the intelligent anti-theft vehicle lock overcomes the defects of the prior art, improves the anti-theft performance of the vehicle lock by arranging the control circuit and the anti-shearing coil, and improves the matching relationship between the key and the control circuit by combining the marble in the lock body and the control circuit.

The technical scheme adopted by the invention for solving the technical problems is as follows: this intelligence theftproof lock, including lock collar and lock beam, the both ends correspondence of lock collar is packed into and is formed the locking closed loop in the jack at lock beam both ends, is provided with the lock body in the lock beam, still be provided with in the lock body with key complex pellet shot from a slingshot, the key rotates the lock body and realizes locking closed loop's locking and opening its characterized in that: a control circuit is arranged in the lock beam; anti-shearing lines are respectively arranged in the lock ring and the lock beam, after the lock ring and the lock beam are connected to form a locking closed loop, the lock ring and the anti-shearing lines in the lock beam are butted end to form an anti-shearing coil, and two ends of the anti-shearing coil are connected into a control circuit; contact switches which are in one-to-one correspondence with the marbles and are triggered by the marbles are arranged in the lock body, and the contact switches are respectively connected into the control circuit.

Preferably, bosses are arranged at the bottoms of the jacks at the two ends of the lock beam, the anti-shearing lines arranged in the lock beam comprise two sections of lock beam anti-shearing lines, one end of each lock beam anti-shearing line is connected into the control circuit, and the other end of each lock beam anti-shearing line is connected to the surface of the boss; the end of the lock ring is provided with a groove corresponding to the boss, the end of the lock ring anti-shearing wire arranged in the lock ring is connected into the groove, and the lock beam anti-shearing wire and the lock ring anti-shearing wire are communicated along with the contact of the boss and the groove.

Preferably, a lock beam insulating sleeve is arranged at the center of the boss, a fixed contact protruding out of the surface of the boss is arranged in the lock beam insulating sleeve, and a lock beam shear line is connected with the fixed contact;

the lock ring anti-shearing wire is characterized in that a lock ring insulating sleeve is arranged in the groove, a cavity for accommodating the fixed contact is arranged in the lock ring insulating sleeve, an elastic contact which is in contact with the fixed contact is placed in the cavity, and the lock ring anti-shearing wire is connected with the elastic contact.

Preferably, a sealing ring is further arranged on the contact surface of the boss and the groove.

Preferably, a main lock head and an auxiliary lock head for locking the lock ring are respectively arranged in the jacks at the two ends of the lock beam, the lock body is positioned below the main lock head, and the lock core which rotates along with the key in the lock body is led out from the end part of the lock body and is connected with the main lock head; the main lock head and the auxiliary lock head are connected through a pull rope, and a torsion spring for realizing the resetting of the auxiliary lock head is further arranged at a rotating shaft of the auxiliary lock head.

Preferably, the contact switch is arranged at the tail part of the corresponding marble, a spring which simultaneously extrudes the contact switch and the corresponding marble is also arranged behind the marble, and a wiring terminal of the contact switch penetrates through the spring and then is connected into the control circuit.

Preferably, the pins comprise main pins, detection pins and end pins, the main pins are placed along the radial direction of the lock core in the lock body and are arranged side by side along the axial direction of the lock core, the detection terminals are placed along the radial direction of the lock core and are positioned opposite to the main pins, and the end pins are positioned at the ends of the lock core and are placed along the axis of the lock core;

the contact switches corresponding to the end marbles are led out through end marble signal wires, the contact switches corresponding to the detection marbles are led out through detection marble signal wires, and the contact switches corresponding to the main marbles are led out through main marble signal wires which correspond to the main marbles one by one respectively.

Preferably, an electric cavity is arranged inside the lock beam, the control circuit is arranged in the electric cavity and comprises a microprocessor, a current sensor, a wireless communication module, a buzzer and an indicator light, a contact switch corresponding to the marble is respectively connected with the input end of the microprocessor through a lead, the anti-shearing coil is connected with the current sensor, the current sensor is connected with the signal input port of the microprocessor, the signal output port of the microprocessor is connected with the buzzer and the indicator light, and the input output port of the microprocessor is in two-way connection with the wireless communication module.

Preferably, the upper parts of the main lock head and the auxiliary lock head are respectively provided with an annular sealing air bag, and the sealing air bags are embedded in the inner walls of the corresponding insertion holes.

An anti-theft control method is characterized in that: the method comprises the following steps:

step a, after the key is normally pulled out, the system carries out self-checking, step b is executed after the self-checking is finished, and step i is executed if the self-checking cannot be finished;

b, entering a locking state after the system is successfully self-checked, and randomly generating a group of trigger codes aiming at the marbles by the control circuit;

c, the control circuit judges whether the current value reaches a preset threshold value according to the anti-shearing coil, if so, the step d is executed, and if not, the step h is executed;

d, judging whether the marble is triggered within a preset time period or not by the control circuit through the contact switch, or judging whether the change frequency of the marble within the preset time exceeds a preset threshold or not by the control circuit through the contact switch;

if the marble is triggered in the preset time or the change times of the marble in the preset time do not exceed the preset threshold value, executing the step e, otherwise executing the step f,

e, the control circuit judges whether the trigger state of the marble is matched with the trigger code generated in the step b, if so, the step f is executed, and if not, the step j is executed;

step f, the control circuit is switched to an unlocking state, and the data port of the anti-shearing coil is closed;

step g, the control circuit judges whether the signal of the current sensor disappears, if so, the step i is executed, and if not, the step h is executed;

h, indicating the abnormal state by the control circuit and executing the step j;

step i, the control circuit gives an alarm and executes step j;

and j, the control circuit sends the abnormal state to the server.

Compared with the prior art, the invention has the beneficial effects that:

1. according to the intelligent anti-theft vehicle lock and the anti-theft control method, the control circuit and the anti-shearing coil are arranged, so that the anti-theft performance of the vehicle lock is improved, and meanwhile, the balls in the lock body are combined with the control circuit, so that the matching relation between a key and the control circuit is improved.

2. The upper parts of the main lock head and the auxiliary lock head are respectively provided with an annular sealing air bag, the sealing air bags are embedded in the inner walls of the corresponding jacks, and after the lock beam and the lock ring are locked, the sealing effect is achieved through the sealing air bags.

3. The lock ring anti-shearing line is in contact with the lock beam anti-shearing line through the elastic contact and the fixed contact, so that reliable connection is realized.

Drawings

Fig. 1 is a schematic structural view of an intelligent anti-theft vehicle lock.

Fig. 2 is an enlarged view of a portion a in fig. 1.

Fig. 3 is a schematic structural diagram of the intelligent anti-theft vehicle lock body.

Fig. 4 is a schematic view of the connection between the primary and secondary lock heads of the intelligent anti-theft vehicle lock.

Fig. 5 is a block diagram of the control circuit of the intelligent anti-theft vehicle lock.

FIG. 6 is a flow chart of the anti-theft control method of the intelligent anti-theft vehicle lock.

Wherein: 1. the lock comprises a lock ring 2, a lock ring shear-proof line 3, a lock beam 4, a sealed air bag 5, a main lock head 6, a lock body 7, a lock beam shear-proof line 8, an electric cavity 9, an auxiliary lock head 10, a contact spring 11, an elastic contact 12, a lock beam insulating sleeve 13, a sealing ring 14, a lock beam insulating sleeve 15, a fixed contact 16, a lock cylinder 17, an end marble 18, a main marble signal line 19, an end marble signal line 20, a detection marble signal line 21, a detection marble 22, a lining 23, a trigger cavity 24, a contact switch 25, a lock hole 26, a main marble 27, a pull rope 28 and a torsion spring.

Detailed Description

Fig. 1 to 6 are preferred embodiments of the present invention, and the present invention will be further described with reference to fig. 1 to 6.

As shown in fig. 1, an intelligent anti-theft vehicle lock (hereinafter referred to as an anti-theft vehicle lock) includes a lock beam 3 and a lock ring 1, and a commercially available U-shaped vehicle lock is taken as an example for description in this application. Jacks are formed at two ends of the lock beam 3, and plugs at two ends of the U-shaped lock ring 1 are arranged in the jacks to be locked to form a closed loop.

The bottom of 3 both ends jacks in the lock beam is provided with a set of tapered ends: the key lock comprises a main lock head 5 and an auxiliary lock head 9 positioned in the other jack, wherein a lock body 6 is arranged below the main lock head 5, the inner end of the lock body 6 is fixed with the main lock head 5, when a key is inserted into the lock body 6 and rotates, the lock body 6 directly drives the main lock head 5 to rotate, and the auxiliary lock head 9 at the other end is driven to rotate at the same angle after the main lock head 5 rotates. After the lock ring 1 is arranged in the lock beam 3, the lock beam 3 and the lock ring 1 are locked and unlocked through the reciprocating rotation of the main lock body 5 and the auxiliary lock head 9. The upper parts of the main lock head 5 and the auxiliary lock head 9 are respectively provided with an annular sealing air bag 4, the sealing air bags 4 are embedded in the inner walls of the corresponding jacks, and after the lock beam 3 and the lock ring 1 are locked, the sealing air bags 4 play a role in sealing.

An electric cavity 8 is arranged in the middle section of the lock beam 3, and a control circuit of the anti-theft vehicle lock is arranged in the electric cavity 8. Two sections of lock beam anti-shearing lines 7 are arranged inside the lock beam 3, one end of each of the two sections of lock beam anti-shearing lines 7 is connected into the control circuit, the other end of each of the two sections of lock beam anti-shearing lines 7 is exposed out of the two jacks at the two ends of the lock beam 3, and the lock beam anti-shearing lines 7 are insulated from the lock beam 3. The coil closed loop connected with the control circuit is formed by arranging a lock ring anti-shearing wire 2 in the lock ring 1, leading out two ends of the lock ring anti-shearing wire 2 from two ends of the lock ring 1 and insulating the lock ring 1, and respectively connecting two ends of the lock ring anti-shearing wire 2 with the ends of lock beam anti-shearing wires 7 in corresponding jacks after the lock ring 1 and the lock beam 3 are locked.

Referring to fig. 2, a raised boss is provided at the bottom of the insertion hole of the lock beam 3, a receiving groove is formed at the center of the boss and a lock beam insulating sleeve 14 made of an insulating material is placed in the receiving groove, the upper end of the lock beam insulating sleeve 14 is open, a fixed contact 15 is placed in the opening, and the fixed contact 15 protrudes from the surface of the boss in the insertion hole. And a sealing ring 13 is arranged on the surface of the boss, and the sealing ring 13 is positioned on the outer ring of the fixed contact 15. The lock beam shear line 7 passes through the lock beam insulating sleeve 14 and then is connected with the fixed contact 15.

The end part of the lock ring 1 is provided with a groove which is matched and spliced with the boss in the lock beam 3. An accommodating groove is also provided on the inner end face of the groove, and a lock ring insulating sleeve 12 made of an insulating material is provided in the accommodating groove. The end part of the lock ring insulating sleeve 12 is opened and a baffle ring is arranged in the lock ring insulating sleeve, the space between the baffle ring and the opening end is used for accommodating a fixed contact 15, and an elastic contact 11 and a contact spring 10 are sequentially arranged in a cavity between the baffle ring and the end of the lock ring insulating sleeve 12 from outside to inside. The diameter of the tail of the elastic contact 11 is larger than the inner diameter of the retainer ring, so that the elastic contact 11 protrudes from the retainer ring under the action of the contact spring 10 and cannot be ejected from the retainer ring. The end part of the lock ring shear resistant wire 2 is connected with the tail part of the elastic contact 11 after passing through the lock ring insulating sleeve 12.

After the lock ring 1 is installed in the lock beam 3, the boss at the bottom of the jack hole of the lock beam 3 enters the groove at the end part of the lock ring 1, and meanwhile, the fixed contact 15 fixedly blocked on the surface of the boss of the lock beam 3 enters the lock ring insulating sleeve 12 and is contacted with the elastic contact 11. The elastic contact 11 is tightly attached to the end surface of the fixed contact 15 under the action of the contact spring 10, so that the lock ring shear line 2 is reliably connected with the lock beam shear line 7.

As shown in fig. 3, the lock body 6 includes a bush 22 and a key cylinder 16 rotatably mounted in the bush 22, and a key hole 25 for receiving a key is provided in the key cylinder 16. A plurality of main ball grooves are sequentially formed in the inner wall of the lock hole 25 along the extending direction of the lock hole 25, and a detection ball groove is formed opposite to the main ball grooves. The lock cylinder comprises a main pin groove and a detection pin groove, wherein the main pin groove and the detection pin groove are formed in the radial direction of the lock cylinder 16 and are formed by butt joint of a lock body groove formed in a lining 22 and a lock cylinder groove formed in the lock cylinder 16, and the lock cylinder groove is communicated with the outer wall of the lock cylinder 16 and a lock hole 25.

A group of main marbles 26 are respectively placed in each main marble groove, a group of detection marbles 21 are placed in the detection marble grooves, the main marbles 26 and the detection marbles 21 respectively comprise outer marbles on the outer side and inner marbles with different lengths on the inner side, the inner marbles are exposed out of the lock hole 25 in the normal locking state of the lockset, and two ends of the outer marbles are respectively positioned in the lock core 16 and the lining 22, so that the lock core 16 and the lining 22 cannot rotate relatively.

When the key cylinder 16 needs to be rotated, a key is inserted into the lock hole 25, the inner pins (of the main pin 26 and the detection pin 21) are pushed out outwards under the action of the sawtooth on the surface of the key, the outer end surfaces of the inner pins are both positioned at the rotating surfaces of the lock cylinder 16 and the bush 22 at the same time, the outer pins (of the main pin 26 and the detection pin 21) are pushed out of the lock cylinder 16 under the action of the corresponding inner pins and integrally enter the pin groove, the butt joint surfaces of the outer pins and the inner pins of the main pin 26 and the detection pin 21 are just coplanar with the rotating surfaces of the lock cylinder 16 and the bush 22, so that the pins are not positioned in the lock body groove and the lock cylinder groove at the same time, and the key is rotated to drive the lock cylinder 16 to rotate in.

An end marble groove is arranged at the end of the lock hole 25 along the axial direction of the lock cylinder 16, an end marble 17 is placed in the end marble groove, and the end marble 17 rotates along with the rotation of the lock cylinder 16, so that the end marble 17 is realized without adopting a structure that marbles at two ends are butted.

The end of the lock cylinder 16 protrudes from the end face of the bush 22, and the above-mentioned main lock head 5 is coaxially fixed on the end face of the lock cylinder 16 protruding from the bush 22, so that the lock cylinder 16 can drive the main lock head 5 to rotate simultaneously when rotating. Referring to fig. 4, the primary locking head 5 and the secondary locking head 9 are connected by a pull rope 27, and the pull rope 27 is preferably implemented by a steel wire. One end of the pull rope 27 is fixed (or wound and fixed) on a connecting shaft of the main lock head 5 and the lock core 16; the two ends of the auxiliary lock 9 are respectively provided with a rotating shaft arranged in the lock beam 3, the other end of the pull rope 27 is fixed (or wound and fixed) on one rotating shaft of the auxiliary lock 9, the outer ring of the rotating shaft is also sleeved with a torsion spring 28, one end of the torsion spring 28 is arranged in the auxiliary lock 9, and the other end is arranged in the lock beam 3.

When the lock is unlocked, the lock core 16 is rotated in the forward direction by a key, the lock core 16 drives the main lock head 5 to rotate, at the moment, the main lock head 5 pulls the auxiliary lock head 9 to synchronously rotate through the pull rope 27, and the torsion spring deforms after the auxiliary lock head 9 rotates; when the lock is locked, the lock core 16 is rotated reversely by the key, the lock core 16 drives the main lock head 5 to rotate reversely, the auxiliary lock head 9 is reset under the action of the torsion spring 28, and the locking is completed.

The tail parts of the main marble groove, the detection marble groove and the end marble groove are respectively provided with a trigger cavity 23, the tail parts of marbles (comprising a main marble 26, an end marble 17 and a detection marble 21) respectively enter the corresponding trigger cavities 23, each trigger cavity is internally provided with a contact switch 24, and the contact switches 24 reciprocate in the corresponding trigger cavities 23. The tail of the marble is contacted with the trigger point of the contact switch 24, and the tail of the contact switch 24 is respectively provided with a return spring.

When the key is inserted into the keyhole 25, the key teeth press the main pins 26 in sequence, the detection pins 21 are pressed by the rear surface of the key, and the end pins 17 are pressed by the end of the key. The main pin 26, the detection pin 21 and the end pin 17 simultaneously trigger the corresponding contact switch 24 after being pressed by the key. When the key is pulled out, the main marble 26, the detection marble 21 and the end marble 17 are reset under the action of respective reset springs to lock the lock body 6. The return spring not only drives the marble to return, but also plays a certain role in buffering when the contact switch 24 is triggered by the marble.

The terminal of each contact switch 24 is respectively connected with a conducting wire, wherein the contact switches 24 arranged at the tail parts of the main marbles 26 are respectively led out through a plurality of main marble signal wires 18; a contact switch 24 arranged at the tail part of the detection marble 21 is led out through the detection marble signal wire 20; a contact switch 24 arranged at the tail part of the end marble 17 is led out through an end marble signal wire 19; the end marble signal line 19, the detection marble signal line 20 and the plurality of main marble signal lines 18 are respectively connected into the control circuit.

As shown in fig. 5, the control circuit of the anti-theft vehicle lock includes a microprocessor, a current sensor, a wireless communication module, a buzzer, an indicator light, the end pin signal line 19, a detection pin signal line 20 and a plurality of main pin signal lines 18. The end marble signal line 19, the detection marble signal line 20 and the plurality of main marble signal lines 18 are connected to different input ports of the microprocessor, any one signal line sends a switch state signal of the corresponding contact switch 24 into the microprocessor, and the microprocessor judges whether the corresponding contact switch 24 (marble) is in a triggered state or not according to the state of the signal line. The control circuit also comprises a rechargeable battery for supplying power to the control circuit and a charging circuit, and a charging port of the charging circuit is arranged on the lock beam 3.

The current sensor is connected with a signal input port of the microprocessor, the closed loop coil formed by connecting the ends of the lock ring shear line 2 and the lock beam shear line 7 is connected with the current sensor, and the microprocessor judges whether the lock ring 1 or the lock beam 3 is maliciously sheared or not by judging the signal of the current sensor when the anti-theft vehicle lock is in a locked state. The signal output port of the microprocessor is connected with the buzzer and the indicator light, and alarms or displays the abnormal state of the anti-theft vehicle lock by driving the buzzer or/and the indicator light to work. The input/output port of the microprocessor is bidirectionally connected with the wireless communication module.

The wireless communication module is realized by adopting an NB-IOT communication module, and the microprocessor is communicated with the server through the wireless communication module. When the anti-theft lock has a fault or an abnormal state, the microprocessor can warn through the buzzer and the indicator lamp, and can also upload information of the fault or the abnormal state to the server through the wireless communication module, and the server can further send the information of the fault or the abnormal state to a mobile terminal (such as a mobile phone) of a vehicle owner; meanwhile, the vehicle owner can also send an instruction to the server through the mobile terminal, and the server further sends the instruction to the microprocessor through the wireless communication module and the microprocessor further processes the instruction.

As shown in fig. 6, the anti-theft control method implemented by the anti-theft vehicle lock includes the following steps:

step 1001, normally pulling out a key;

when the locking or unlocking is completed, the lock ring 1 is locked with the lock beam 3, and the lock ring is normally pulled out after the locking.

Step 1002, the system performs self-checking;

after the key is normally pulled out, the microprocessor detects whether the main marble 26, the detection marble 21 and the end marble 17 reset or not, and simultaneously the microprocessor opens a data port of the current sensor, so that the system completes self-checking.

Step 1003, judging whether the system is successfully self-checked;

the microprocessor determines whether the system has been successfully self-tested, if so, executes step 1004, and if not, executes step 1012.

Step 1004, entering a locking state;

the system enters a locked state after a successful self-test, and upon entering the locked state, the microprocessor randomly generates a set of trigger codes for the main marbles 26.

The generation principle and the matching process of the trigger code are as follows: as can be seen from the above, a plurality of main pins 26 are disposed in the lock body 6, and the contact switches 24 are disposed at the tails of the main pins 26, so that the states of the main pins 26 can be represented by the contact switches 24 (for example, after the contact switches 24 are triggered, the state of the corresponding main pin 26 is denoted as "0", and when the contact switches 24 are not triggered, the state of the corresponding main pin 26 is denoted as "1"), so that a binary code having a bit number identical to the number of the main pins 26 can be correspondingly obtained by all the main pins 26. When the microprocessor generates the trigger code, one or more of the main marbles 26 are randomly selected as detection bits according to the arrangement sequence of the main marbles, and the state of the detection bits is marked as '1', so that the trigger code is generated. For example: six main marbles 26 are arranged in the lock body 6, and when the microprocessor generates a trigger code at a certain time, the 1 st, 5 th and 6 th main marbles 26 are randomly selected as detection positions, so that the generated trigger code is 1xxx 11.

When the key is inserted next time, if the 1 st, 5 th or 6 th main pin 26 is triggered corresponding to the corresponding contact switch 24, it is judged that the key is correctly inserted into the keyhole 25 by matching the randomly generated trigger code.

Step 1005, whether the current sensor data reach a threshold value;

the microprocessor judges whether the current value reaches a preset threshold value through the current sensor, if so, executes step 1006, and if not, executes step 1011.

Step 1006, whether the main marble is triggered;

the microprocessor determines whether the master pin 26 (any one or more) is activated, executes step 1007 if the master pin 26 is activated, and returns to step 1005 if the master pin 26 is not activated.

Step 1007, judging whether the end marble 17 and the detection marble 21 are triggered within a set time;

after the main pin 26 is triggered, the microprocessor judges whether the end pin 17 and the detection pin 21 are triggered within a set time, if the lock is normally unlocked, the key is inserted into the lock hole 25 within a short time, therefore, a time period enough for inserting the key is preset by the microprocessor, if the key is inserted into the lock hole 25 within the time period, both the end pin 17 and the detection pin 21 are triggered, the microprocessor preliminarily determines that a correct key is placed in the lock hole 25, step 1008 is executed, and if the end pin 17 and the detection pin 21 are not triggered within the set time period, step 1012 is executed.

Or judging whether the change times of the trigger state of the main marble exceeds a threshold value;

the microprocessor judges whether the change frequency of the triggering state of the innermost marble of the main marble 26 exceeds a preset threshold value, and under the normal state, if a key is normally inserted by a vehicle owner, the triggering state of the innermost marble (including the end marble 17 and the detection marble 21) of the main marble 26 cannot be frequently changed in a short time. Therefore, a threshold value of the state change of the innermost pin of the main pins 26 is set through the microprocessor, if the change of the triggering state times of the innermost pin in the main contact points exceeds the upper threshold value or is lower than the lower threshold value in the set normal unlocking time, it indicates that a key or other tools which can trigger the end pin 17, the detection pin 21 and part of the main pins 26 are inserted into the lock hole, step 1012 is executed, and if the change times of the triggering state of the innermost pin of the main pins 26 do not exceed the threshold value, step 1008 is executed;

step 1008, whether the trigger state of the main marble 26 is matched with the trigger code;

after the microprocessor judges that the end marble 17 and the detection marble 21 are triggered within the set time or the change frequency of the marble trigger state does not exceed the threshold value, the end marble 17 is triggered, the microprocessor judges whether the trigger state of the main marble 26 is matched with the randomly generated trigger code, if so, the step 1009 is executed, and if not, the step 1012 is executed.

Step 1009, switching to unlocking state;

the microprocessor regards the current state as normal unlocking, switches to the unlocking state, and closes the data port of the current sensor.

Step 1010, judging whether the current sensor signal disappears or not;

the microprocessor judges whether the current sensor signal disappears, if so, executes step 1012, and if not, executes step 1011.

Step 1011, warning by an indicator light;

the microprocessor drives the indicator lamp to operate and performs step 1013. The indicator light can be realized by adopting a multicolor LED, and different indicator lights are driven to emit different colors of bright light under different abnormal states.

Step 1012, the buzzer alarms;

the microprocessor drives the buzzer to work, gives an alarm and executes step 1013.

Step 1013, sending information to a server;

the microprocessor sends a message to the server through the wireless communication module, and the server further processes the message.

The foregoing is directed to preferred embodiments of the present invention, other and further embodiments of the invention may be devised without departing from the basic scope thereof, and the scope thereof is determined by the claims that follow. However, any simple modification, equivalent change and modification of the above embodiments according to the technical essence of the present invention are within the protection scope of the technical solution of the present invention.