35results about How to "Prevent violent unlocking" patented technology

The invention discloses a lock with a leaf pin idling lock core structure, which comprises a front lock core in the lock body. A plurality of leaf pins are arranged along the axis on the front lock core, locking side posts matching with a V-shaped groove on the leaf pins are arranged in the locking side post grooves thereon, step-shaped grooves are provided on the locking side post, clamping plates and fixing parts matching with the step-shaped groove on the locking side post are arranged in the upper part of the locking side post. A radial return spring of the locking side post is arranged between the fixing parts and the locking side posts. The middle part on one side of the leaf pin is provided with a protruding part matching with the boss with the bits on the key. Only one side of the key is provided with the boss of a thinner thickness. The lock of the invention has simple structure, less components and easy processing, and is capable of preventing a thicker tool from being inserted in a lock hole for violent unlocking.

The present application discloses a smart lock capable of preventing signal interference on unlocking and a method, the smart lock comprises a power source, a switch circuit, a motor drive unit, a lock control motor, a switch limit circuit and an inductive antenna coil; wherein the motor drive unit is electrically connected with the power source through the switch circuit; the switch circuit is coupled to the inductive antenna coil through the switch limit circuit; the motor drive unit is electrically connected to the lock control motor; the lock control motor is configured to control the smart lock to be turned on or off; and the motor driving unit is configured to control the operation of the lock control motor. The smart lock capable of preventing signal interference on unlocking and the method can avoid the unlocking of intelligent lock even in the environment of signal interference, and can ensure that violent unlocking is avoided under the premise of satisfying the normal openingor closing of the smart lock.

The invention discloses a novel anti-theft lock. The novel anti-theft lock comprises a lock body, a lock cylinder arranged in the lock body and a key paired with the lock cylinder, wherein a spring assembly, a blade assembly and an irregular spring assembly are respectively arranged between the lock body and the lock cylinder; a spring groove, a snakelike groove and an outer milled teeth grove, corresponding to the spring assembly, the blade assembly and the irregular spring assembly, are respectively arranged on the key; when the lock needs to be unlocked, the paired key is inserted, and the lock can be successfully unlocked only when the spring assembly, the blade assembly and the irregular spring assembly are simultaneously opened; the novel anti-theft lock is complex in structure an is difficult to technologically unlock by a theft; and the novel anti-theft lock is further provided with a drilling-prevention pin which is used to prevent the theft from damaging the lock cylinder by using a tool and forcibly unlocking, and thus, the anti-theft property of the novel anti-theft lock is further increased.

The invention discloses a key-closed mechanical lock, comprising a lock cylinder, a lock body, a bolt, a push and pull plate and a key. The specialty of the lock depends on the matching correspondence between the stem of the lock cylinder and the slot of the key. A gap containing a pit at the lower bottom surface of the stem of the lock cylinder just correspond to the bolt. The middle of the bolt is connected with a push and pull rod which can move inwards and outwards. When moving inwards, the push and pull rod can enter the pit at the lower bottom of the lock cylinder to form an unlocking state. When moving outwards, the push and pull rod can form the locking state of the lock. The push and pull plate comprises the push and pull rod, a baffle plate and a handle, wherein the handle is used as the strength bearing point for unlocking the lock; the baffle plate can close the key in a key hole in the process of unlocking; and the push and pull rod enables the bolt to move inwards and outwards to perform the functions of unlocking and locking. The invention provides the mechanical lock which can only perform unlocking operation when the key is totally put in the key hole and after the key hole is closed, thereby improving the thievery prevention. The invention changes the traditional unlocking habit, and the cost is reduced simultaneously.

The invention relates to a security encryption matrix contact type electronic lock key and relates to the field of electronic locks. The key comprises a matrix key board and a key casing, wherein a fingerprint module and a display screen are arranged on the lateral edge of the key casing, and a control button is arranged at the upper end of the key casing; a key MCU is arranged in the key casing,and the key MCU is respectively connected with a power management module, a storage module, a fingerprint module, a contact communication module, a Bluetooth module, an anti-disassembled detection module, a driving motor module and a display and sound module; after verification of the fingerprint module, the driving motor module is started to pop the matrix contact key out; after detection error times of the fingerprint module exceed preset times, password files stored in a FLASH are automatically formatted; thus, the problems of safely encrypting the electronic lock and preventing the electronic lock from being cracked for procedures or chip interfaces are solved, physical encryption can prevent a password of the electronic lock from being cracked through the interfaces, the electronic lock is effectively prevented from being unlocked violently, and data cracking unlocking prevention is improved based on preventing technological unlocking.

An idling lock comprises a lock cylinder, an engineering vane, a common vane, an engineering key and an owner key. The lock cylinder is provided with a spring, a spring head can extend into a vane groove and abut against the end face of the engineering vane, the engineering vane is provided with a W-shaped notch, and engineering key teeth are not contacted with the engineering vane, but owner key teeth are contacted with the engineering vane. After the owner key is inserted, the engineering vane moves, the spring head is separated from a lower frame edge of the engineering vane and is buckled on the side face of a protruding block along the protruding block, and the engineering vane can not recede so that after the owner key opens the lock, the engineering key can not be used for unlocking. By means of the design of the idling structure, the situation that the engineering key is changed into the owner key for use is effectively prevented. Besides, due to special-shaped design of the engineering vane and the engineering spring and special arrangement of a special-shaped strip and a limiting strip, any kind of technical unlocking can be prevented. Besides, an anti-drill bolt, an anti-drill card and an embedded block are arranged in each lock, so any violent unlocking can be prevented.

The invention discloses an adjustable intelligent lock capable of achieving idling. The adjustable intelligent lock comprises a first lock body and a second lock body, and the second lock body is located in a door; the first lock body comprises a shell, a clutch assembly and a controller, wherein the shell is located outside the door, the clutch assembly comprises a driving mechanism, a transmission shaft and a transmission rod, and the controller and the driving mechanism are located in the shell; the transmission rod is used for being matched with a lock hole of an anti-theft lock and provided with an inner hole in the axial direction of the transmission rod, one end of the transmission shaft is connected with the shell, and the other end of the transmission shaft penetrates through the inner hole; the controller is used for receiving an unlocking instruction and controlling the driving mechanism to move according to the unlocking instruction, and then the transmission rod is fixed to one end of the transmission shaft; and the other end of the transmission rod is clamped in the second lock body. According to the adjustable intelligent lock capable of achieving idling, the shell of the first lock body is fixed to the transmission shaft, the transmission shaft penetrates through the transmission rod, the transmission shaft only can idle in the transmission rod in a non-unlocking state, therefore, the difficulty of violent unlocking is increased, and violent unlocking is effectively prevented.

The invention discloses a wheel transmission mechanical lock cylinder and a dragon holding cylinder type key, belongs to keys, is suitable for various locks, eradicates the geneogenous defect of the displacement distance of several millimeters of a traditional mechanical lock cylinder, prevents technical unlocking and violent unlocking, and retains the advantages of the traditional mechanical lock cylinder. A dragon like guide rail or guide rail groove on a key body is held on a hollow cylinder; when a key is pushed in, a set of thinner annular transmission wheels in the lock cylinder slides on the guide rail or the guide rail groove, and rotates around the cylinder at the same time, so that the displacement distance is increased to reach several centimeters; after the key is inserted in, a brake wheel is rotated by a push button on a key handle; concave and convex parts on the brake wheel are used for extruding all the wheels, so that all the wheels form a whole; at this time, a transmission rod is fed in a transmission rod groove under the effect of a spring piece; the key is rotated to drive the transmission wheels to push the transmission rod; a poking bolt is rotated to poke a lock tongue to achieve the unlocking purpose; and when the key is pulled out, the wheels are firstly loosened, and then, the key is pulled out.

The invention discloses a dual violence-resistant unlocking structure. The dual violence-resistant unlocking structure comprises a lock case, a lock case inner sleeve and a lock cylinder, wherein a first transmission block is arranged at the tail end of the lock cylinder, a kidney-shaped mounting hole matched with the lock cylinder is formed in the middle of the first transmission block, and a fixing key clamped in the lock cylinder is arranged on one side of the kidney-shaped mounting hole; the first transmission block is further provided with a second transmission block, and the first transmission block is provided with a clamping slot adapted to the second transmission block; at least one draw pin locating slot is formed in the tail ends of the lock case an the lock case inner sleeve, the draw pin locating slot extends from the outer wall of the lock case to the lock case inner sleeve, and a draw pin is arranged in the draw pin locating slot; a torsional spring pressing the draw pininto the draw pin locating slot is also arranged at the tail end of the lock case; and the first transmission block is provided with an arc groove adapted to the draw pin, and the other end of the draw pin is arranged in the arc groove. The dual violence-resistant unlocking structure has a good anti-theft function and can be widely used in the anti-theft field of automobile locks.

The invention discloses a manual-automatic double-drive parallel rear clutch. The manual-automatic double-drive parallel rear clutch comprises an electric push rod mechanism mounted in a clutch shell,a main clutch, a damping disengagement and engagement arm and a speed reduction power mechanism. The damping disengagement and engagement arm is mounted between a shaft gear of the main clutch and alast-stage gear. An intermediate gear of the disengagement and engagement arm is in coaxial inserting groove connection with the last-stage gear of the speed reduction power mechanism. The main clutchis provided with two drive motors for standby application. According to the manual-automatic double-drive parallel rear clutch, key-free emergency unlocking is achieved, and technical unlocking is eradicated; by means of the rear clutch structure, various kinds of violent unlocking are avoided, and the operation structure achieves highest safety; meanwhile, due to the arrangement of a power motor, automatic unlocking can be achieved, manual-automatic conversion operation does not need to be set, and normal unlocking habits and humanization requirements are met sufficiently; and the four targets of safety, easy mounting, humanization and emergency without help of other people are really combined in one lock at the first time, and a solid structure foundation is laid for development of manual intelligent locks.

The invention provides a rear clutch structure of an intelligent door lock. The rear clutch structure comprises a front panel and a rear panel which are mounted on a door panel lock cylinder, the front panel is sequentially provided with a fingerprint acquisition panel, an emergency keyhole channel and an outdoor unlocking handle from top to bottom, the rear panel is sequentially provided with a battery box from top to bottom, an electromagnet, a clutch unlocking component and a driving gear, the control circuit board of the fingerprint lock device is used for controlling the output end to beconnected with the electromagnet, and the clutch unlocking component comprises a pin control clutch, a driven gear and an unlocking driving shaft. The structure can replace a front rear plate and a rear plate in the prior art so as to truly prevent violent unlocking.

The invention discloses an anti-theft lock. The anti-theft lock comprises a lock shell and a lock cylinder. A lock shell hole and a lock shell groove are formed in the lock shell. The lock groove is formed in the side wall of the lock shell hole. The lock cylinder is arranged in the lock shell hole and can rotate freely in the lock shell hole. Marble grooves, a lock rod groove and a lock plate groove are formed in the side wall of the lock cylinder. The multiple marble grooves are formed in the lock cylinder. A marble assembly is arranged in each marble groove. Each marble assembly comprises a marble rod and a spring. A lock plate is arranged in the lock plate groove. The lock plate is in contact with the marble rods. Containing grooves are formed in each marble rod. A lock rod is arranged in the lock rod groove. The lock rod is in contact with the lock plate. The lock rod enters or protrudes out of the surface of the lock cylinder under the effect of the lock plate. By the adoption of the anti-theft lock, the key quantity is increased, the technical unlocking can be prevented effectively, and the safety performance is enhanced greatly; and besides, the marbles are designed in a rod shape, the strength is larger, the situation that the lock cylinder is twisted forcedly with a tool and the marble assemblies in the lock are catastrophically destroyed is avoided, and thus the forced unlocking is prevented effectively.

The invention discloses a magnetic engraving lock. The magnetic engraving lock comprises a lock shell, a lock cylinder, a lock sleeve, a clamp spring, a row piece, a spring, a long magnet, a middle magnet, a short magnet, a short magnet and a key; the lock cylinder is movably sleeved in the lock cylinder hole of the lock shell, the lock sleeve is movably connected to the outer end of the lock shell in a sleeved mode, and the lock sleeve is clamped on the lock shell through the clamp spring; the long magnet, the middle magnet and the short magnet is movably sleeved in the through groove of thelock cylinder, the body of the key is made of copper materials, an iron block is inlaid in the head of the key, and the iron block is opposite to the long magnet. Due to the fact that the iron block at the head of the key is matched with the long magnet, the middle magnet and the short magnet in the corresponding area of the lock cylinder, when the key is inserted into the lockset, the key tooth type corresponds to the corresponding lock password, the magnet can be attracted by the iron block inlaid in the key, so that the magnet is in a suction state, the unlocking requirement is met, and themethod has the advantages of being high in safety.

The invention provides an anti-theft lock, which can prevent technical unlocking. An anti-theft lock, comprising a housing, an outer lock cylinder, an inner lock cylinder, a dead bolt and a key, wherein: the outer lock cylinder includes an outer lock sliding part, an outer lock fixing part, a key hole, an outer lock cylinder pin, an outer lock cylinder Spring, outer lock sliding guide body, outer lock locking pin, outer lock core locking pin hole, outer lock core key thimble hole and outer lock other needle jacks; inner lock core includes inner lock sliding part, inner lock fixing part, inner lock cylinder pin, inner lock cylinder spring, inner lock tumbler chamber and inner lock sliding guide; the key includes multiple key thimbles, key plate, key positioning guide frame and rotating handle; outer lock sliding part and inner locking sliding part A force transmission piece is arranged between them, and the sliding part of the outer lock drives the sliding part of the inner lock to move through the force transmission piece, and the movement of the sliding part of the inner lock drives the movement of the dead bolt to control the opening or locking of the lock.

The invention discloses an anti-theft lock. The anti-theft lock comprises a lock shell and a lock cylinder. A lock shell hole and a lock shell groove are formed in the lock shell. The lock groove is formed in the side wall of the lock shell hole. The lock cylinder is arranged in the lock shell hole and can rotate freely in the lock shell hole. Marble grooves, a lock rod groove and a lock plate groove are formed in the side wall of the lock cylinder. The multiple marble grooves are formed in the lock cylinder. A marble assembly is arranged in each marble groove. Each marble assembly comprises a marble rod and a spring. A lock plate is arranged in the lock plate groove. The lock plate is in contact with the marble rods. Containing grooves are formed in each marble rod. A lock rod is arranged in the lock rod groove. The lock rod is in contact with the lock plate. The lock rod enters or protrudes out of the surface of the lock cylinder under the effect of the lock plate. By the adoption of the anti-theft lock, the key quantity is increased, the technical unlocking can be prevented effectively, and the safety performance is enhanced greatly; and besides, the marbles are designed in a rod shape, the strength is larger, the situation that the lock cylinder is twisted forcedly with a tool and the marble assemblies in the lock are catastrophically destroyed is avoided, and thus the forced unlocking is prevented effectively.

The invention discloses a blade lock with the radial displacement being mutually controlled through a front locking mechanism and a rear locking mechanism. The blade lock comprises a lock body, a lock cylinder, a front brake bolt, a rear brake bolt, a front blade mechanism, a rear blade mechanism, a lock gate and a key. The front brake bolt and the rear brake bolt are arranged side by side between the lock body and the lock cylinder and matched with the front blade mechanism and the rear blade mechanism which are installed inside the lock cylinder to form the front locking mechanism and the rear locking mechanism respectively. The front locking mechanism controls the rear locking mechanism to rotate. The rear locking mechanism controls decoding conditions of the front locking mechanism through a control mechanism. Before the rear brake bolt moves in place, the front locking mechanism does not have the decoding conditions. After the rear locking mechanism is decoded, a spring pushes the rear brake bolt to move downwards in place in the radial direction, the lock gate is closed at the time, control over the front locking mechanism is released by the control mechanism so that the key can decode the front locking mechanism, and unlocking is achieved by rotating the lock cylinder. According to the blade lock, the novel idea and method for replacing time difference with potential difference is adopted, and at present, the blade lock is one of the most effective locks for preventing technological unlocking and violent unlocking in the world.

The invention discloses an anti-theft device capable of preventing an anti-theft door from being picked and giving an alarm in time. The anti-theft device comprises a processing box body, wherein a processing cavity is formed in the processing box body, an alarming device is arranged in the processing cavity, and the alarming device comprises a lever which is rotationally connected with the innerwall of the rear side of the processing cavity. The anti-theft device capable of preventing the anti-theft door from being picked and giving the alarm in time is an auxiliary device for an anti-theftdoor lock, one channel is additionally arranged on the front side of a lock hole, and anti-theft work is achieved by changing closing of the channel; and when operation of an illegal person is sensed,the equipment can automatically give out alarm sound to remind other people, and in addition, the channel in front of the lock hole is completely locked through a protection device, so that violent unlocking of the illegal person is prevented, and the personal and property safety is favorably protected.

The invention provides a floating night lock core composed of a floating marble, a lock core, a lock core pillar, a lock core cap, a steel ball, a tapered end body, a mould cavity piece, a function piece, a tapered end shell, a key and etc. A lock core service system flow including the floating night lock core is composed of a coding piece, a passkey, and a product after-sales service system. The one chip marble of the lock core is provided with a coded combination including 137 kinds of codes. The effective coding of higher than 16-digit number is realized according to the arrangement of 8 sets of marbles, thus ensuring an unique effective groupage code for plural lock products manufactured in several years. The provided 11 kinds of lock core technology interfaces and product executive plans can meet the requirement in service use for majority of products, improve the current product performance, decrease the production cost and increase the cost performance.

The invention discloses an antitheft lock. A lock base, a lock cylinder, a locking assembly, a key and a lock fork are included. The lock base is provided with lock holes, and a plurality of lock bodies are movably arranged in the lock holes. The lock cylinder is rotationally arranged in the lock base in a connected manner and rotates between the locking position and the unlocking position, and the lock cylinder is provided with second lock bodies, wherein the number of the second lock bodies is the same with the number of the first lock bodies. When the lock cylinder is located at the lockingposition, the second lock bodies are aligned with the first lock bodies, and when the lock cylinder is located at the unlocking position, the second lock bodies are staggered from the first lock bodies. The locking assembly is movably arranged in the lock base and is in transmission connection with the lock cylinder. The key is provided with lock protrusions, wherein the number of the lock protrusions is the same with the number of the second lock bodies. The lock fork is provided with fork feet capable of stretching into the lock holes. When the lock cylinder is located at the locking position, the fork feet are in clamping and connecting fit with the locking assembly, and when the lock cylinder is located at the unlocking position, the fork feet are separated from the locking assembly.The whole antitheft lock is compact in structure, and compared with a complex antitheft lock structure in the prior art, violent unlocking and technical unlocking difficulty can be more effectively improved.

The invention relates to the technical field of door locks, in particular to an intelligent lock which comprises a front handle assembly, a rear handle assembly and a lock body. The rear handle assembly is connected with the lock body through a first connecting piece and suitable for driving a spring bolt of the lock body to act; the intelligent lock further comprises a clutch mechanism and a linkage assembly, and the clutch mechanism is arranged between the lock body and the rear handle assembly and used for controlling the first connecting piece to act; and the linkage assembly comprises a first linkage piece, and one end of the first linkage piece is connected with the front handle assembly. According to the intelligent lock, the clutch mechanism is arranged between the lock body and the rear handle assembly, that is, the clutch mechanism is arranged on the inner side of a door, personnel cannot make contact with the clutch mechanism, violent unlocking is avoided, the safety level is high, and when the intelligent lock is in a locked state, the front handle assembly is in an idling state, violent unlocking cannot be achieved by prying the front handle assembly, and the safety performance of the intelligent lock is further improved; and the front lever handle assembly is small in size and conforms to the ultrathin design trend of an existing intelligent door lock.

The invention discloses a lock with a leaf pin idling lock core structure, which comprises a front lock core in the lock body. A plurality of leaf pins are arranged along the axis on the front lock core, locking side posts matching with a V-shaped groove on the leaf pins are arranged in the locking side post grooves thereon, step-shaped grooves are provided on the locking side post, clamping plates and fixing parts matching with the step-shaped groove on the locking side post are arranged in the upper part of the locking side post. A radial return spring of the locking side post is arranged between the fixing parts and the locking side posts. The middle part on one side of the leaf pin is provided with a protruding part matching with the boss with the bits on the key. Only one side of thekey is provided with the boss of a thinner thickness. The lock of the invention has simple structure, less components and easy processing, and is capable of preventing a thicker tool from being inserted in a lock hole for violent unlocking.

The invention discloses a toggling part anti-twisting structure of a lock cylinder. The toggling part anti-twisting structure of the lock cylinder comprises a toggling part arranged in a lock cylinder body, an inner rotary part and a lock cylinder inner core; the toggling part is vertically provided with a locking hole; a steel ball, a locking spring and a fastening screw are arranged in the locking hole from bottom to top in sequence; the inner rotary part is formed by jointing a first single inner rotary part and a second single inner rotary part; the upper part of the second single inner rotary part is provided with a cavity adaptive to the steel ball; the door inside end part of the second single inner rotary part is abutted against and matched with an inner rotary part spring; the inside of a clamp ring slot of the inner core of the lock cylinder is provided with a toggling part slot; the inner periphery of the toggling part is provided with a lug adaptive to the toggling part slot; the toggling part slot is clamped and matched with the lug. The toggling part anti-twisting structure of the lock cylinder has the advantages that the structure is simple and reasonable, the manufacturing is convenient, the manufacturing cost is low, and the lock cylinder can still not be unlocked even being twisted off from the middle mounting hole, so the safety performance of the lock cylinder is greatly improved.

The invention discloses a lock linkage structure which comprises a driving part, a handle and a first linkage mechanism; a linkage hole is formed in the driving part; the handle and the driving part can relatively rotate; the first linkage mechanism comprises a first linkage rod, a rotary piece and a first reset elastic piece; the first linkage rod is fixed with the handle in the circumferential direction to rotate along with the handle so as to be aligned with the linkage hole; the first linkage rod can move in the axial direction relative to the handle and can be inserted in or separated from the aligned linkage hole; the rotary piece is in transmission joint with the first linkage rod; when the rotary piece moves towards a first direction, the rotary piece can be linked with the first linkage rod to be separated from the linkage hole and prevents the first linkage rod from moving in the direction close to the linkage hole; when the rotary piece moves towards a second direction, therotary piece removes stop to the first linkage rod; and the first reset elastic piece is used for providing the elastic stress enabling the first linkage rod to be inserted in the linkage hole. The lock linkage structure can prevent violent unlocking and can increase the security coefficient. The invention further discloses a lock.

The invention relates to a security encryption matrix contact type electronic lock key and relates to the field of electronic locks. The key comprises a matrix key board and a key casing, wherein a fingerprint module and a display screen are arranged on the lateral edge of the key casing, and a control button is arranged at the upper end of the key casing; a key MCU is arranged in the key casing,and the key MCU is respectively connected with a power management module, a storage module, a fingerprint module, a contact communication module, a Bluetooth module, an anti-disassembled detection module, a driving motor module and a display and sound module; after verification of the fingerprint module, the driving motor module is started to pop the matrix contact key out; after detection error times of the fingerprint module exceed preset times, password files stored in a FLASH are automatically formatted; thus, the problems of safely encrypting the electronic lock and preventing the electronic lock from being cracked for procedures or chip interfaces are solved, physical encryption can prevent a password of the electronic lock from being cracked through the interfaces, the electronic lock is effectively prevented from being unlocked violently, and data cracking unlocking prevention is improved based on preventing technological unlocking.

The invention provides a U-shaped electronic anti-theft lock. The U-shaped electronic anti-theft lock comprises a U-shaped lock rod, a lock beam and a locking device. The lock beam comprises an outerlayer shell, a metal sleeve with the two ends being opened and an inner layer shell. The metal sleeve is connected to the outside of the inner layer shell in a sleeving mode, and the outer layer shellwraps the metal sleeve and the inner layer shell. The inner layer shell comprises a main shell body and a bottom cover, and the main shell body and the bottom cover are detachably mounted. The main shell body is provided with a waterproof convex edge, and the bottom cover is provided with a waterproof groove. The waterproof convex edge and the waterproof groove are matched for arrangement. The main shell body is further provided with a circuit cavity capable of containing a circuit board and a lock rod groove. The lock rod groove contains the inserting end of the U-shaped lock rod. The circuit cavity and the lock rod groove communicate with each other. A waterproof rubber mat is further arranged between the circuit cavity and the lock rod groove. The top of the waterproof rubber mat is located in the lock rod groove, and the bottom of the waterproof rubber mat is located in the circuit cavity. The circuit board is provided with a shift knob, and a contact of the shift knob is connected with the bottom of the waterproof rubber mat in a touching mode. By adoption of the U-shaped electronic anti-theft lock, the anti-theft performance can be enhanced; and meanwhile, the leakproofnesscan be reinforced, and circuit stability can be improved.

The invention discloses a lock with a leaf pin idling lock core structure, which comprises a front lock core in the lock body. A plurality of leaf pins are arranged along the axis on the front lock core, locking side posts matching with a V-shaped groove on the leaf pins are arranged in the locking side post grooves thereon, step-shaped grooves are provided on the locking side post, clamping plates and fixing parts matching with the step-shaped groove on the locking side post are arranged in the upper part of the locking side post. A radial return spring of the locking side post is arranged between the fixing parts and the locking side posts. The middle part on one side of the leaf pin is provided with a protruding part matching with the pin groove on the key. Only one side of the key is provided with the pin groove of a thinner thickness. The lock of the invention has simple structure, less components and easy processing, and is capable of preventing a thicker tool from being inserted in a lock hole for violent unlocking.

The invention discloses an interlink lock which comprises a key, a lock cylinder and a lock body. The lock body is provided with a lock panel, the lock panel is provided with a lock tongue hole and a latch column hole, the front of the lock body is provided with the lock cylinder in a lock cylinder hole, the inside of the lock body is provided with a cipher disk, a cipher disk unlocking piece, a door handle cam set, a lock tongue and a counter lock pin, the cipher disk is in transmission connection with the lock cylinder, the cipher disk is connected with the counter lock pin, the cipher disk unlocking piece is fixedly installed on the upper portion of the lock body, the lower side of the cipher disk unlocking piece is provided with an insertion column inserted into the cipher disk, one end of the lock tongue is connected with the rotary door handle cam set, the door handle cam set is connected with three integrated latch columns, the front end of the key is inserted into the key hole of the lock cylinder, an unlocking insertion tongue is inserted into the key, a positioning cross is connected to the middle of the lock cylinder, the outside of the positioning cross is provided with a gear, a clamp spring is installed between the positioning cross and the two sections of the locking cylinder, and one side of the bottom of the lock cylinder is provided with a lock cylinder pin tumbler and a spring. The interlock lock has the advantages of being reasonable in structure and high in safety.