CN112627638B

CN112627638B - Unlocking tool

Info

Publication number: CN112627638B
Application number: CN202011626361.9A
Authority: CN
Inventors: 王小龙; 高雷
Original assignee: Beijing Goldray Century High Tech Co ltd
Current assignee: Beijing Goldray Century High Tech Co ltd
Priority date: 2020-12-31
Filing date: 2020-12-31
Publication date: 2023-02-17
Anticipated expiration: 2040-12-31
Also published as: CN112627638A

Abstract

An unlocking tool for unlocking a double-sided cylinder lock cylinder having a 3-gauge blade configuration, comprising: a main body part having a rectangular plate-shaped key lever inserted into the lock hole; a set of teeth having 3 types of teeth of key teeth corresponding to 3 types of blades; the blade structure is arranged on the blade structure, and the blade structure is arranged on the surface of one side of the key rod. By adopting the structure, the key bit can be arranged on the key rod, and the key is simulated through different arrangement and combination modes of the key bit, so that the unlocking tool can unlock the double-side-column lock cylinder with different blade arrangement and combination modes.

Description

Unlocking tool

Technical Field

The invention relates to the technical field of unlocking, in particular to an unlocking tool.

Background

With the continuous development of modern society, people's security consciousness is continuously improved, the closing mode of door also upgrades from ordinary spring bolt to the safer burglary-resisting door that has world lock, and its operation also develops into more intelligent modes such as electron password, fingerprint, face identification, but whatever the mode of opening, all need drive the mechanical part of burglary-resisting door through the core part "lock core" of tool to lock and accomplish the action of "lock". The 'lock cylinder' also rises from the initial A level to the C level popular in the market at present, however, the lock is upgraded and updated, the ultimate goal of upgrading and updating the lock is still to achieve the purpose of unlocking the lock by one key, and the lock is prevented from being unlocked by other modes except for the unique key.

However, the progress of technology is changing day by day, and the development of technology also means that there is an iterative change of the updating technology. The electronic equipment has the risks of power failure and program loophole, and the mechanical key has uncontrollable factors of loss, damage and the like. How to rapidly open a C-level lock with a double-side column lock core through technical means on the premise of not damaging the lockset becomes a difficult-to-break technical problem for modern locksmiths and public security personnel.

Disclosure of Invention

In view of the above, the primary objective of the present invention is to provide an unlocking tool to unlock a class C lock having a double-sided cylinder core.

The invention provides an unlocking tool, which is used for unlocking a double-side column lock core with a 3-type blade structure, and comprises: a main body having a rectangular plate-shaped key lever inserted into the lock hole; a set of teeth having 3 types of teeth of key teeth corresponding to 3 types of blades; the key teeth are arranged on two sides of the key rod in a connecting mode and correspond to the blade structures, and after the key rod is inserted into the lock cylinder, the blades are shifted to move for a preset distance through the teeth on the surface of one side of the key rod.

By adopting the structure, the key bit can be arranged on the key rod, and the key is simulated by different arrangement and combination modes of the key bit, so that the unlocking tool can open the double-sided cylinder lock core with different blade arrangement and combination modes.

Preferably, the tooth group further comprises a fourth key tooth, and the moving distance of the toggle blade is an average value of two similar distances in the preset moving distances of the toggle blade of the 3 key teeth.

By adopting the structure, two key teeth close to each other in the preset moving distance of the poking blade can be replaced by the fourth key tooth, so that the 3 key teeth are changed into 2 key teeth, the number of the key teeth is reduced, the unlocking difficulty is reduced, and the unlocking time is shortened.

The invention preferably further comprises a probe arranged on the other surface of the key rod, and a toggle bar is arranged at one end part of the probe; after the key rod is inserted into the lock cylinder, the rotating probe can push the blade to move along the moving direction of the blade poked by the teeth through the poking bar.

With the structure, the first 6 rows of key teeth can be arranged and combined, and the key rod is inserted into the lock cylinder to confirm whether the arrangement of the first 6 rows of key teeth is correct. When the right arrangement combination mode of the front 6 rows of key teeth is found, after the key rod is inserted, a part of the limiting pin of the double-sided column lock cylinder can enter the V-shaped groove of the double-sided column lock cylinder. The blades in 7-12 rows are sequentially stirred by the probe to move, and when the blades move to a preset position, the limiting pin enters the V-shaped groove of the blade. The user can sense the change in force through the probe, and thus determine the key bit model corresponding to the blade according to the distance moved by the probe. In this way, the user can determine the type and arrangement of all the key bits by the probe, thereby unlocking the dual-sided cylinder lock cylinder.

The invention preferably further comprises a second pressure plate fixedly arranged on the main body part; a through groove-shaped movable groove is formed in one side, facing the main body part, of the second pressing plate; a sliding groove is arranged on the movable groove along the direction of the key rod; the probe is positioned in a movable groove between the second pressing plate and the main body part, and a shaft pin is arranged at the corresponding position of the sliding groove; the probe can rotate by taking a shaft pin as a center, so that the blade is pushed by the poking bar to move along the moving direction of the tooth poking blade; the pin can slide along the sliding groove, so that the toggle bar can push the blades at different positions.

By adopting the structure, the probe can move along the chute through the shaft pin and can rotate by taking the shaft pin as the center, so that the stirring bar can stir the blade. Thereby the operation of the probe is more convenient and stable.

According to the invention, preferably, the other end of the probe is provided with a pointer; and after the probe rotates to push the blade to move for the preset distance along the moving direction of the blade poked by the teeth, the position pointed by the pointer is also provided with a mark.

By adopting the structure, when a user stirs the blade to reach the preset position through the probe, the type of the blade can be determined through the mark part in an auxiliary way, so that the type of the required key bit can be determined, and the operation is more convenient and accurate.

Preferably, the present invention further includes a positioning wire provided on the other side surface of the main body and extending in the direction of the key lever.

Adopt as above structure, when the probe removed along the spout, can assist the strip of stirring of probe tip through the location line and remove along key-bar direction, avoid stirring a strip moving direction mistake, touch other parts to the convenient operation to the probe.

According to the invention, preferably, a hand wheel for holding by hand is arranged at the other end of the probe.

By adopting the structure, a user can operate the probe through the hand wheel, so that the operation of the probe by the user is more convenient.

Preferably, the teeth set comprises two teeth heads arranged at two sides of the end part of the key rod, and the surfaces of the two teeth heads at the opposite sides form an open inclined surface towards the end part of the key rod.

With the structure, the key rod can be conveniently inserted into the lock core through the opening-shaped inclined plane formed on the key rod part by the tooth head.

Preferably, the edges of two sides of the key rod are provided with slide rails along the key rod; and a sliding groove is arranged at the position, corresponding to the sliding rail, on the key tooth.

By adopting the structure, the key rod and the key teeth can be connected with the sliding groove in a sliding way through the sliding rail, so that the key teeth can be conveniently installed and replaced.

The key head is provided with a first pressing plate which is fixed on the main body part through a magnet and is provided with a fixing head which is abutted against the key teeth on the side opposite to the tooth head.

Adopt like above structure, can realize fixing the key-bit through first clamp plate, make the unlocking means more stable when using. The first pressing plate is connected with the main body part through the magnet, so that the first pressing plate can be conveniently detached when the key bit is replaced.

Drawings

FIG. 1 is a schematic structural view of a double-sided cylinder lock core;

FIG. 2 is a schematic view of the lock housing of FIG. 1;

FIG. 3 is a schematic structural view of the lock cylinder of FIG. 1;

FIG. 4 is a schematic view of the structure within the core shell;

FIG. 5 is a schematic view of a blade distribution;

FIG. 6 is a schematic view of different types of blades;

fig. 7 is a schematic perspective view of the unlocking tool of the present application;

FIG. 8 is a schematic view of the unlocking tool of FIG. 7 in another orientation;

FIG. 9 is a schematic view of the main body of FIG. 7;

FIG. 10 is a schematic view of the first tooth head;

FIG. 11 is a schematic view of a second tooth head;

FIG. 12 is a schematic view of a 1# key bit;

FIG. 13 is a schematic view of a 2# key bit;

FIG. 14 is a schematic structural view of a # 3 key bit;

FIG. 15 is a schematic view of the structure of the 4# key bit;

FIG. 16 is a schematic view of a 5# key bit;

FIG. 17 is a schematic view of a 6# key bit;

FIG. 18 is a schematic view of a 7# key bit;

FIG. 19 is a schematic view of the first platen of FIG. 6;

FIG. 20 is a schematic view of the second platen of FIG. 7;

FIG. 21 is a schematic diagram of the structure of the probe of FIG. 7;

FIG. 22 is a schematic view of the connection between the set of teeth and the key lever;

FIG. 23 is a schematic diagram of the probe operation principle.

Description of the reference numerals

A lock case 1; a connecting portion 11; a mounting portion 12; pin grooves 121; a lock cylinder 2; a core shell 21; pin holes 211; mounting holes 212; a stopper pin 22; a card head portion 221; a plug portion 222; a blade 23; a locking hole 231; a shifting block 232; a V-shaped groove 233; a marker 234; a top 235; a spring 24; a main body part 3; a key handle 31; a marker 311; a connecting plate 32; a key lever 33; a guide rail 331; a set of teeth 4; the first tooth head 41; a guide groove 411; the second gear head 42; a guide groove 421; a key bit 43; the teeth 431; a mounting seat 432; a guide groove 433; a notch 434; a first presser plate 5; an insertion hole 51; a magnet 52; a fixed head 53; a probe 6; a toggle bar 61; a shaft pin 62; a hand wheel 63; a pointer 64; a second presser plate 7; a movable groove 71; a chute 72.

Detailed Description

Double-side column lock core

First, the detailed structure and the operation principle of the double-sided cylinder lock cylinder to be unlocked by the unlocking tool of the present application will be described in detail with reference to fig. 1 to 8.

FIG. 1 is a schematic structural view of a double-sided cylinder lock core; fig. 2 is a schematic structural view of the lock case 1 in fig. 1; fig. 3 is a schematic structural view of the lock cylinder 2 in fig. 1. As shown in fig. 1, 2 and 3, the double-sided cylinder lock core comprises a lock shell 1 and a lock core 2 arranged in the lock shell 1. The lock case 1 includes a C-shaped connecting portion 11, a cylindrical mounting portion 12 is disposed at each end of the connecting portion 11, and the axes of the two mounting portions 12 are overlapped. A pin groove 121 is formed in the inner surface of the mounting portion 12 toward the connecting portion 11, and the pin groove 121 is a rectangular through groove and is formed along the axial direction of the mounting portion 12. The lock cylinder 2 includes a cylindrical cylinder housing 21, and a rectangular pin hole 211 is provided on the cylinder housing 21 at a position opposite to the pin groove 121 along the axial direction of the cylinder housing 21, for installing the stopper pin 22. The stopper pin 22 includes a rectangular block-shaped head portion 221, and the head portion 221 is shaped to fit the pin hole 211 and to protrude from the pin hole 211. The card head portion 221 is provided with a triangular plug portion 222 on a side facing the center of the key cylinder 2, and the plug portion 222 is fitted into a V-shaped groove 233 described below and can enter the inside of the V-shaped groove 233. The middle positions of two sides of the pin hole 211 are uniformly provided with 6 rectangular mounting holes 212 in a penetrating mode, the width of each mounting hole 212 is matched with the thickness of two blades 23, and the height of each mounting hole 212 is slightly smaller than the height of each blade 23.

FIG. 4 is a schematic view of the structure within the core shell 21; FIG. 5 is a schematic view of a blade distribution. As shown in fig. 4, a plurality of vanes 23 are further provided in the core shell 21, and two parallel vanes 23 are provided in each mounting hole 212, so that 12 vanes 23 are provided in the core shell 21 in parallel along the axis of the core shell 21. The blade 23 is a circular-like sheet-shaped member, and a rectangular lock hole 231 is formed in the middle of the blade 23 for a key to pass through. A rectangular dial 232 protruding downward is provided on the upper portion of the lock hole 231 (upper portion in the direction toward the stopper pin 22). The upper portion and the lower portion of the blade 23 are straight, wherein the upper portion is provided with a V-shaped groove 233 having a V-shaped notch, one end of the upper portion is provided with a notch-shaped mark 234, and the lower portion is provided with a tip 235 corresponding to the mark 234. Two opposite blades 23 are arranged in the mounting hole 212, a spring 24 is arranged between the two opposite top heads 235, and the two blades 23 are pushed by the spring 24, so that the blades 23 are fixed in the mounting hole 212.

Fig. 6 is a schematic structural view of different types of blades 23. As shown in fig. 6, the blades 23 include three types of blades 23, i.e., 1#, 2#, and 3#, the blades 23 of different types have the same shape and structure, and the dial 232 has the same position. The difference is that the distances between the bottom of the V-shaped groove 233 and the shifting block 232 are different, and the distances between the bottom of the V-shaped groove 233 of the 1#, 2#, 3# blade 23 and the farther side of the shifting block 232 from the V-shaped groove 233 are 1.4mm, 2mm, 3mm, respectively.

After installation, the three types of blades 23 are installed in the 6 installation holes 212 according to different arrangement and combination modes, and two blades 23 are arranged in each installation hole 212. Because the positions of the V-shaped grooves 233 of different types on the upper parts of the blades 23 are different, the V-shaped grooves 233 on the upper parts of the 12 blades 23 are staggered to form a plane, so that the head clamping part 221 of the limiting pin 22 on the upper parts of the blades 23 is exposed from the pin hole 211 and is positioned in the pin groove 121, the lock cylinder 2 cannot relatively rotate relative to the lock shell 1, and the double-side column lock cylinder is in a locked state.

When a proper key is inserted into the key hole 231, the recessed finger groove on one side surface of the key will move the finger 232 on each blade 23 so that the center of the V-shaped groove 233 on each blade 23 is aligned uniformly and below (in the middle position) the plug portion 222. The limiting pin 22 on the V-shaped groove 233 falls into the V-shaped groove 233 with the center aligned with the same, the chuck is separated from the pin groove 121 and retracted into the pin hole 211, and at this time, the lock cylinder 2 can rotate relative to the lock shell 1, which is in an unlocking state. To unlock the double-sided cylinder lock core, a key matched with the combination direction of the blades 23 in the double-sided cylinder lock core is used. The blade 23 of the double-sided column lock core is combined with 3 ¹² The combination of the two types (i.e. 531441 types) means that there are 531441 types of keys.

Unlocking tool

Fig. 7 is a schematic perspective view of the unlocking tool of the present application; fig. 8 is a structural view of the unlocking tool in the other direction in fig. 7. As shown in fig. 7 and 8, the unlocking tool includes: a main body part 3, wherein the main body part 3 comprises three parts of a key handle 31, a connecting plate 32 and a key rod 33; the tooth group 4 is sleeved on the key rod 33 along the key rod 33 in a sliding manner to form a key slot; the first pressing plate 5 is arranged on one side surface of the main body part 3, is detachably connected with the main body part 3 and plays a role in limiting the tooth group 4 on the key rod 33; a probe 6 provided on the other surface of the body 3; and a second presser 7 fixedly connected to the main body 3 to slidably connect the probe 6 to the main body 3.

Fig. 9 is a schematic structural view of the main body 3 in fig. 7. As shown in fig. 9, the body 3 is a plate-shaped member, is formed by machining SKD11 die steel having a thickness of 0.63mm, and includes a key lever 33 having a rectangular shape for being inserted into the lock hole 231, a key lever 31 having a rectangular shape for being held by a hand of a user, and a link plate 32 for connecting the key lever 33 and the key lever 31. The connecting plate 32 is in a convex shape and is divided into a wide part and a narrow part. Wherein the end of the narrow portion is connected to the key lever 33 and is larger in size than the key lever 33; the end of the wide portion is connected to the key lever 31 and is smaller in size than the key lever 31. The main body 3 has guide rails 331 extending along the edges of the key lever 33 at the positions of both side edges of the key lever 33 on one side surface thereof for slidably engaging with the teeth 4. The guide rail 331 extends from an end of the key lever 33 to a position near the link plate 32 to form an end so that a below-described key bit 43 is mounted on the guide rail 331 to be slidably coupled with the guide rail 331. The key lever 31 is further provided with a plurality of marks 311 on both sides near the end, and the marks 311 at different positions represent different numbers of rows and types of the key bits 43. Two positioning lines 312 are further provided on the other surface of the body 3 along the extending direction of the key lever 33 on the key lever 31. After mounting, two positioning wires 312 are located on both sides of the probe 6 for assisting the probe 6 to move in the direction of the key handle 31.

As shown in fig. 7 and 8, the tooth set 4 includes a first tooth head 41, a second tooth head 42, and a 1# -7# key tooth 43. The first tooth head 41 and the second tooth head 42 are disposed on both sides of an end portion of the key bar 33, and are fixedly connected to the key bar 33 by welding.

Fig. 10 is a schematic structural view of the first tooth head 41; fig. 11 is a schematic structural view of the second tooth head 42. As shown in fig. 9, the first tooth head 41 is a block-shaped member, and one side of the first tooth head 41 is a straight surface and the other side thereof is an inclined surface having two connected obtuse angles. The first tooth head 41 is provided with a guide groove 411 with two open ends along a straight surface, and the guide groove 411 penetrates through an inclined surface. The guiding slot 411 is adapted to the guiding track 331 of the key bar 33, so that the first tooth head 41 can slide along the guiding track 331 to the end of the key bar 33 and then be fixed to the key bar 33 by welding, so as to facilitate the movement of the pick 232 into the pick groove formed by the key teeth 43 when the key bar 33 is inserted into the locking hole 231. As shown in fig. 9, the second bit 42 has a shape similar to the first bit 41 except that the second bit 42 has a length in the lengthwise direction of the key lever 33 smaller than that of the first bit 41.

Fig. 12 is a schematic structural view of the # 1 key bit 43; fig. 13 is a schematic structural view of the # 2 key bit 43; fig. 14 is a schematic structural view of the 3# key bit 43. As shown in fig. 12, 13, and 14, the key bit 43 includes a tooth 431 provided at a right angle and a mount 432. The connecting position of the teeth 431 and the mounting seat 432 is provided with a guide groove 433, and the guide groove 433 is matched with the guide rail 331 on the key rod 33, so that the key teeth 43 can slide along the guide rail 331, and the sliding connection with the key rod 33 is realized. The width of the teeth 431 (perpendicular to the direction of connection of the teeth 431 and the mounting seat 432) is adapted to the blade 23, and the shifting block 232 can be pushed to move the V-shaped groove 233 to the middle position. One end of the mount 432 is shorter than the teeth 431 to form a notch 434 for the toggle bar 61 described below to pass through.

The 1#, 2#, 3# key teeth 43 correspond to the 1#, 2#, 3# blades 23 respectively, and the distances between the bottoms of the V-shaped grooves 233 of the 1#, 2#, 3# blades 23 and the far side of the shifting block 232 from the V-shaped grooves 233 are 1.4mm, 2mm, 3mm respectively, so that the V-shaped grooves 233 are located at the middle position after the shifting block 232 is shifted by the teeth 431, and the widths of the teeth 431 of the 1#, 2#, 3# key teeth 43 are correspondingly different. The width of the tooth 431 of the 1# key bit 43 is smaller than that of the tooth 431 of the 2# key bit 43, and in order to allow the shift block 232 to smoothly move between the teeth 431 when the teeth 431 of the 1# and 2# key bits 43 are in contact with each other, triangular slopes are provided at both ends of the tooth 431 of the 1# key bit 43, so that the tooth 431 of the 1# key bit 43 is formed in a convex shape. The width of the tooth 431 of the 3# key bit 43 is larger than that of the tooth 431 of the 2# key bit 43, and in order to allow the shift block 232 to smoothly move between the teeth 431 when the teeth 431 of the 2# and 3# key bits 43 are in contact with each other, triangular slopes are provided at both ends of the tooth 431 of the 3# key bit 43, so that the tooth 431 of the 3# key bit 43 is formed in a concave shape. In this way, even if the tooth 431 of the # 1 key bit 43 contacts the tooth 431 of the # 2 key bit 43, the pick 232 can move between the two teeth 431 via the slopes where the two teeth 431 contact.

Fig. 15 is a schematic structural view of the 4# key bit 43; fig. 16 is a schematic structural view of a 5# key bit 43; fig. 17 is a schematic structural view of the 6# key bit 43. As shown in fig. 14, 15 and 16, the 4#, 5# and 6# key bits 43 correspond to the 1#, 2# and 3# key bits 43, respectively, and the 4#, 5# and 6# key bits 43 are different from the 1#, 2# and 3# key bits 43 in that the 4#, 5# and 6# key bits 43 are longer than the 1#, 2# and 3# key bits 43 in the length direction. The 4#, 5#, and 6# bits 43 are intended to be attached to the root of the key lever 33, and the bits 43 at the root of the key lever 33 on both sides can be flattened by the extended length.

Fig. 18 is a schematic structural view of the 7# key bit 43. As shown in fig. 18, the distances between the bottom of the V-shaped groove 233 on the 1# and 2# blades 23 and the farther side of the shifting block 232 from the V-shaped groove 233 are respectively 1.4mm and 2mm, the middle value between the two is 1.7mm, and the 4# blade 23 is virtualized according to the fact that the distance between the bottom of the V-shaped groove 233 and the farther side of the shifting block 232 from the V-shaped groove 233 is 1.7 mm. Fig. 17 is a structural view of the 7# key bit 43. As shown in fig. 17, the tooth group 4 further includes a 7# key tooth 43 corresponding to the 4# blade 23.

Fig. 19 is a schematic structural view of the first presser plate 5 in fig. 7. As shown in fig. 19, the first presser plate 5 is a rectangular plate-like member, and two circular through-hole-shaped insertion holes 51 for mounting magnets 52 are provided in parallel in the first presser plate 5. The first pressing plate 5 is matched with the narrow part of the connecting plate 32, the fixing heads 53 are respectively arranged at the positions of the first pressing plate 5 opposite to the two sides of the key rod 33, one part of the fixing heads 53 is arranged on one side surface of the key rod 33, the other part of the fixing heads 53 is arranged at the side part of the key rod 33, and the positions of the fixing heads 53 relative to the connecting plate 32 can be fixed. After the installation, the magnet 52 is fitted into the fitting hole 51, the first presser plate 5 is fixed to the link plate 32 by the attraction of the magnet 52, and the fixing head 53 can abut against the key bit 43 on both sides of the key lever 33, thereby fixing the key bit 43.

Fig. 20 is a schematic structural view of the second presser plate 7 in fig. 8. As shown in fig. 20, the second presser plate 7 is a plate-like member, the shape of the second presser plate 7 is convex, and the second presser plate 7 is fitted to the shape of the connecting plate 32. A trapezoidal through-groove-shaped movable groove 71 is formed in the surface of one side of the second pressing plate 7, and the narrow end of the movable groove 71 is opened at the narrow end of the second pressing plate 7; the wide end of the movable groove 71 is open at the wide end of the second presser plate 7. An elongated sliding groove 72 penetrating the movable groove 71 is formed in the middle of the movable groove 71 along the extending direction of the movable groove 71, the width of the sliding groove 72 is adapted to the shaft pin 62, and the shaft pin 62 can slide and rotate in the sliding groove 72.

Fig. 21 is a schematic structural view of the probe 6 in fig. 8. As shown in fig. 21, the probe 6 is an elongated plate-like member. One end of the probe 6 is gradually narrowed at a position close to the end part, and a toggle bar 61 is extended to the two sides at the end part. A cylindrical shaft pin 62 is provided on one side surface of the probe 6 at a position near 1/4 of the length of the end portion. A cylindrical hand wheel 63 is arranged on the surface of one side of the shaft pin 62 at the other end of the probe 6 so that a user can operate the probe 6 conveniently, and pointers 64 are arranged on the two sides of the probe 6 close to the hand wheel 63.

Fig. 22 is a schematic view of the connection between the tooth group 4 and the key lever 33. As shown in fig. 22, when assembling, the first and

second bits

41 and 42 are slidably connected to the guide rail 331 through the

guide grooves

411 and 421 at the end of the key bar 33, respectively, the first and

second bits

41 and 42 are disposed on both sides of the end of the key bar 33, the first and

second bits

41 and 42 are fixed by welding, and the end of the key bar 33 is opened by the inclined surfaces of the first and

second bits

41 and 42 disposed opposite to each other, so that the key bar 33 can be easily inserted into the lock hole 231. The other bits 43 enter the guide rails 331 through the guide grooves 433 at the connecting position of the key lever 33 and the link plate 32, so that the respective bits 43 are slidably connected to the key lever 33. Since the first bit 41 is longer than the second bit 42 in the key lever 33, the opposing bits 43 on both sides of the key lever 33 can be displaced by a predetermined distance, so that the opposing bits 43 on both sides can correspond to the two blades 23 arranged in parallel and in the same mounting hole 212, and finally the bits 43 on both sides of the key lever 33 are divided into the 1 st row to the 12 th row in the front-rear order (the end of the key lever 33 is the front, and the key lever 33 is the rear in the direction toward the link plate 32). Meanwhile, in order to ensure that the key teeth 43 on both sides of the key bar 33 are flush at the end, the 4#, 5# or 6# key teeth 43 are selected as the key teeth 43 in the 11 th row, and the 1#, 2#, 3#, 7# key teeth 43 are combined at other positions, and finally, a curved groove-shaped blade shifting groove is formed in the middle position of the key bar 33 through the key teeth 43 on both sides, so that when the key bar 33 is inserted into the lock cylinder 2, the shifting block 232 slides in the blade shifting groove to push the blade 23 leftwards/rightwards.

After the key bit 43 is mounted, the first presser plate 5 is placed on the surface of one side of the link plate 32, and is fixedly connected to the main body portion 3 by the magnet 52, and the key bit 43 is fixed by the abutment of the fixing heads 53 on both sides with the key bit 43, thereby preventing the key bit 43 from sliding on the guide rail 331. The second presser plate 7 is placed on the other side surface of the connecting plate 32, and is welded and fixed to the connecting plate 32. The probe 6 is located between the second pressing plate 7 and the main body part 3, the toggle bar 61 is located on the key rod 33, the axle pin 62 is located in the sliding slot 72, and the user can move the probe 6 along the sliding slot 72 by controlling the hand wheel 63, and can rotate in the sliding slot 72, so that the toggle bar 61 can pass through the notch 434 on the mounting seat 432 to abut against the left/right sides of the locking hole 231 on the blade 23. By rotating the probe 6, the toggle bar 61 pushes the blade 23 to move left/right so that the V-shaped groove 233 is in the middle position. The pointer 64 on the probe 6 now points over the mark represented by the corresponding row number and type of key bit 43.

Unlocking principle of unlocking tool

First, the 12 blades 23 in the double-sided cylinder lock cylinder are equally divided into two parts (the inner side of the cylinder shell 21 is taken as the front part), namely, the two parts of the front 6 blades 23 and the rear 6 blades 23 are divided, and the front 6 blades 23 and the rear 6 blades 23 respectively have 3 ⁶ (729) in different arrangements. At this time, it can be assumed that 1#, 2# blades 23 in the first 6 blades 23 are replaced by 4# blades 23, that is, the first 6 blades 23 include two kinds of 3#, 4# blades 23, and the combination manner of the first 6 blades 23 is changed to 2 ⁶ (i.e., 64) arrangements, thereby reducing the number of permutations of the blades 23.

Accordingly, 6 key bits 43 are arranged and combined in the front 6 rows of the key lever 33 with 3#, 7# key bits 43. Of the 64 arrangements, one would correspond to the first 6 blades 23 assumed above. Meanwhile, in the 7 th to 12 th rows of the key bits 43, the 6 th row of the key bits 43 is mounted, and the 3 rd row of the key bits 43 are mounted at all other positions. After the assembly is completed, if the combination of the first 6 rows of key teeth 43 is correct relative to the first 6 blades 23, in practice, the V-shaped grooves 233 on the first 6 rows of blades 23 are located at the lower part of the limit pin 22, and because the positions of the V-shaped grooves 233 of the 1#, 2# blades 23 are different from the position of the 4# blade 23, the V-shaped grooves 233 on the 1#, 2# blades 23 in the first 6 blades 23 are located close to the middle, so that the 1#, 2# and 3# blades 23 form a certain space in the middle, the limit pin 22 falls obliquely under the action of gravity, and a fulcrum is formed on the 7 th blade 23. At this time, the body 3 is rotated leftwards/rightwards, because the stopper pin 22 does not completely enter the V-shaped groove 233, and the stopper pin 22 can rub against the lock case 1, when the rotating force is large enough, the stopper pin 22 can not move easily, so that the blade 23 is stopped by the stopper pin 22 entering the V-shaped groove 233, and when the blade 23 can not move, the corresponding key tooth 43 on the key bar 33 is also stopped and can not move. Therefore, the key lever 33 cannot be pulled out of the key cylinder 2 while the body portion 3 is forcibly rotated, so that it is determined that the combination selected by the front 6 rows of teeth is correct. If the front 6 rows of key teeth 43 are combined in a wrong way relative to the front 6 blades 23 assumed above, the blades 23 in the core shell 21 are still interwoven into a plane at the upper part, the limit pin 22 is placed on the plane, and when the locking tool is rotated, the blades 23 can move freely without limitation between the V-shaped groove and the limit pin 22, and the tool can be pulled out of the lock core 2 easily.

Fig. 23 is a schematic view of the operation principle of the probe 6. As shown in fig. 23, when the 7 th blade 23 is moved left and right by the probe 6 after the front 6 rows of key teeth 43 on the key lever 33 are determined, the stopper pin 22 slides on the 7 th blade 23, when the fulcrum moves to the critical point of the V-shaped groove 233 of the blade 23, the fall generated when the stopper pin 22 enters the V-shaped groove 233 enables the probe 6 to sense correspondingly, and at this time, the mark of the pointer of the probe 6 on the main body is checked, so as to determine which type of blade 23 the blade 23 is, and further determine which type of key tooth 43 the 7 th row on the key lever 33 should use. After the 7 th row of the key blade 43 of the key lever 33 is changed, the models of the 8 th to 12 th rows of the key blades 43 are continuously confirmed using the above-described method, so that the correct arrangement and combination of the next 6 th row of the key blades 43 can be found. If the double-sided cylinder lock cylinder cannot be opened at this time, the model number of the first 6 key bits 43 can be determined in the same manner starting from the 6 th key bit 43. Thus, the combination of all the blades 23 of the double-sided cylinder lock cylinder can be determined, and the corresponding combination of the key bits 43 can be found, so that the key rod 33 can simulate a key to open the double-sided cylinder lock cylinder.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. The utility model provides an unlocking means for open the bilateral post lock core that has 3 model blade structures, its characterized in that includes:

a main body having a rectangular plate-shaped key lever inserted into the lock hole;

the key teeth are arranged on two sides of the key rod in a connected mode and correspond to the blade structures, and after the key rod is inserted into the lock cylinder, the blades are shifted to move for a preset distance through the teeth on the surface of one side of the key rod;

the probe is arranged on the other surface of the key rod, a poking strip is arranged at one end of the probe, and after the key rod is inserted into the lock cylinder, the probe can be rotated to push the blades to move along the moving direction of the teeth poking blades;

the tooth group further comprises a fourth key tooth, the fourth key tooth can shift the blade to move for the 3 key teeth to shift the blade to move for the average value of two similar distances in the preset distance.

2. The unlocking tool of claim 1, further comprising a second pressure plate fixedly disposed on the main body portion; a through groove-shaped movable groove is formed in one side, facing the main body part, of the second pressing plate; a sliding groove is arranged on the movable groove along the direction of the key rod; the probe is positioned in a movable groove between the second pressing plate and the main body part, and a shaft pin is arranged at the corresponding position of the sliding groove; the probe can rotate by taking a shaft pin as a center so as to realize that the blade is pushed by the toggle bar to move along the moving direction of the tooth toggle blade; the pin can slide along the sliding groove, so that the toggle bar can push the blades at different positions.

3. The unlocking tool of claim 2, wherein the other end of the probe is provided with a pointer; and after the probe rotates to push the blade to move for the preset distance along the moving direction of the blade poked by the teeth, the position pointed by the pointer is also provided with a mark.

4. The unlocking tool of claim 3, further comprising a positioning wire provided on the other side surface of the key lever to extend in the direction of the key lever.

5. The unlocking tool of claim 1, wherein the other end of the probe is further provided with a hand wheel for holding by hand.

6. The unlocking tool according to any one of claims 1 to 5, wherein said set of teeth further comprises two teeth heads disposed on opposite sides of the end of the key shaft, opposite surfaces of the two teeth heads forming an open-ended inclined surface facing the end of the key shaft.

7. The unlocking tool of claim 6, wherein the key lever is provided with slide rails along both side edges thereof; and a sliding groove is arranged at the position, corresponding to the sliding rail, of the key tooth.

8. The unlocking tool of claim 7, further comprising a first pressing plate fixed to the body portion by a magnet, and having a fixing head abutting against the key bit on a side opposite to the bit.