CN211622955U - Mechanical lock with screw-driven connecting lock core - Google Patents

Abstract

The utility model relates to the technical field of locks, in particular to a spiral shell-driven mechanical lock with a lock core; the utility model comprises a lock cylinder seat, a lock cylinder, a lock opening transmission rod and a key; the lock core comprises a connecting joint and a lower lock core, the connecting joint comprises an upper lock core and a middle lock core which are connected, and the upper lock core is provided with a reinforcing concave-convex card; in the utility model, after a key can be inserted into the key channel through the key inlet hole and the lock cylinder is screwed, the connecting joint in the lock cylinder moves radially towards the lower lock cylinder together, and after the middle lock cylinder in the connecting joint is clamped with the lower lock cylinder, the middle lock cylinder and the lower lock cylinder rotate axially together, and when the marble is clamped in the marble hole, the lock opening transmission rod can be driven, so that the door is opened; the utility model can prevent from being forced to open and violently unlock by arranging a connecting gap between the upper lock cylinder and the middle lock cylinder and arranging a reinforced concave-convex card on the upper lock cylinder; and a clutch interval is reserved between the middle section lock cylinder and the lower section lock cylinder to prevent technical unlocking.

Description

Mechanical lock with screw-driven connecting lock core

Technical Field

The utility model relates to a tool to lock technical field particularly, relates to a spiral shell moves hookup lock core mechanical lock.

Background

Locks are a widely used tool for theft protection and security, and historically, the evolution of one lock to another, more advanced, has been over a century. Since 1848 Americans L.Yeer invented mechanical cylinder lock core of cylinder lock pin, this technology has been used for 165 years, but the explosion-proof force is not strong to break the lock and the professional technology is not strong to break the lock; in order to improve the anti-theft function and the confidentiality, people strive to create electronic locks, intelligent locks, coded locks and the like in the lock industry, and the locks are expensive in manufacturing cost, difficult to repair and unacceptable for common people.

At present, a lock core and a marble are generally arranged in a lockset, and a plurality of pins are unsafe at present, for example, the lock core can be opened only by aligning the lock core with the marble by adopting a technical unlocking method, and for example, the lock core can be opened by adopting stronger strong opening violent unlocking to twist off the connection part in the lock core and can also be unlocked.

Disclosure of Invention

In order to solve the problems, the utility model aims to provide a mechanical lock with a screw-driven connecting lock cylinder, which can prevent from being forcibly unlocked by violence by arranging a connecting gap between an upper lock cylinder and a middle lock cylinder and arranging a reinforced concave-convex card on the upper lock cylinder; and a clutch interval is reserved between the middle section lock cylinder and the lower section lock cylinder to prevent technical unlocking.

The utility model aims at realizing through the following technical scheme:

the utility model provides a mechanical lock with a spiral-motion connection lock core, which comprises a lock core seat, a lock core connected in the lock core seat, a lock opening transmission rod connected with the lock core and a key matched with the lock core; a key inlet hole and a key channel which are communicated with each other are arranged in the lock core; the lock core comprises a connecting joint and a lower lock core, the lower lock core can axially move in the lock core seat, the connecting joint can axially and radially move in the lock core seat, the connecting joint comprises an upper lock core and a lower lock core which are connected, a clutch interval is arranged between the middle lock core and the lower lock core, a connecting gap is arranged at the joint of the middle lock core and the upper lock core, a reinforcing concave-convex card is arranged on the upper lock core, ball holes are arranged on the middle lock core and the lower lock core, and balls corresponding to the ball holes are arranged in the lock core seat.

As an improvement of the utility model, the joint has the jump ring on the joint gap.

As a further improvement of the utility model, the upper lock cylinder extends the lock cylinder seat through open the lock transfer line connect with open the lock transfer line and connect.

As a further improvement of the present invention, the upper lock cylinder extends out of one section of the lock cylinder seat, and a first spring is sleeved on one section of the lock cylinder seat.

As a further improvement of the utility model, be provided with on the upper segment lock core and be used for covering the spring protecting cover of first spring.

As a further improvement of the present invention, a mounting groove for placing the snap spring is provided in the connection gap.

As a further improvement of the present invention, the connection gap is provided with a plurality of connection gears.

As a further improvement, the bottom of well festival lock core is provided with first half cut-off, the top of lower festival lock core is provided with the correspondence first half cut-off the second half cut-off of cut-off, be provided with the second spring on the first half cut-off.

As a further improvement of the utility model, the lower lock cylinder is connected in the lock cylinder seat through a positioning pin.

As a further improvement of the utility model, a plurality of spiral strips are arranged on the key.

In the utility model, after a key can be inserted into the key channel through the key inlet hole and the lock cylinder is screwed, the connecting joint in the lock cylinder moves radially towards the lower lock cylinder together, and after the middle lock cylinder in the connecting joint is clamped with the lower lock cylinder, the middle lock cylinder and the lower lock cylinder rotate axially together, and when the marble is clamped in the marble hole, the lock opening transmission rod can be driven, so that the door is opened; the utility model can prevent from being forced to open and violently unlock by arranging a connecting gap between the upper lock cylinder and the middle lock cylinder and arranging a reinforced concave-convex card on the upper lock cylinder; and a clutch interval is reserved between the middle section lock cylinder and the lower section lock cylinder to prevent technical unlocking.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without undue limitation to the invention. In the drawings:

fig. 1 is a schematic view of the connection structure of the present invention;

FIG. 2 is a schematic view of the internal connection between the lock cylinder and the lock cylinder seat of the present invention;

fig. 3 is a schematic view of the internal structure of the lock cylinder of the present invention;

fig. 4 is a bottom view of the lock cylinder of the present invention;

fig. 5 is a schematic structural view of a key inlet of the lock cylinder of the present invention;

fig. 6 is a schematic view of the eccentric arrangement of the key inlet of the present invention at the lock cylinder;

fig. 7 is a schematic view of the eccentric arrangement of the lock cylinder on the lock cylinder seat;

fig. 8 is a schematic structural view of the clamp spring of the present invention;

wherein the reference numerals are: 1-a key seat, 11-a locating pin, 12-a locating pin slot, 2-a lock core, 21-a key inlet hole, 22-a key channel, 23-a coupling joint, 24-a lower lock core, 25-an upper lock core, 251-a connection gap, 252-a snap spring, 253-a mounting groove, 254-a connection stop, 26-a middle lock core, 261-a first half cut, 262-a second half cut, 263-a thin curve special-shaped spiral groove, 264-a wide spiral groove, 265-a lock core convex stop, 27-a clutch interval, 3-an unlocking transmission rod, 31-an unlocking transmission rod joint, 32-a first spring, 33-a second spring, 34-a spring protection cover, 4-a key, 41-a spiral strip, 5-a reinforcing concave-convex card and 6-a ball hole, 61-marble.

Detailed Description

In order to make the technical solution of the present invention better understood, the technical solution of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall belong to the protection scope of the present invention.

As shown in fig. 1 to 8, the utility model discloses a mechanical lock with a screw-driven connecting lock cylinder, which comprises a lock cylinder seat 1, a lock cylinder 2 connected in the lock cylinder seat 1, a lock-opening transmission rod 3 connected with the lock cylinder 2 and a key 4 matched with the lock cylinder 2.

As shown in fig. 4 and 5, a key inlet hole 21 and a key passage 22 are provided in the key cylinder 2 to communicate with each other, and a key 4 can be inserted into the key passage 22 through the key inlet hole 21 to screw the key cylinder 2.

As shown in fig. 1 and 2, the lock cylinder 2 includes a coupling joint 23 and a lower lock cylinder 24, the lower lock cylinder 24 can move axially in the lock cylinder holder 1, the coupling joint 23 can move axially and radially in the lock cylinder holder 1, the key 4 is screwed in the key channel 22, the lower lock cylinder 24 is limited and can not move back and forth only by rotation, and the coupling joint 23 can move back and forth in the lock cylinder holder 1 and can also rotate together with the lower pin cylinder 24 after being clamped.

As shown in fig. 2, the coupling joint 23 includes an upper lock cylinder 25 and a middle lock cylinder 26 connected to each other, a clutch gap 27 is provided between the middle lock cylinder 26 and the lower lock cylinder 24, a connection gap 251 is provided at a joint of the middle lock cylinder 26 and the upper lock cylinder 25, the upper lock cylinder 25 is provided with a reinforcing male-female clip 5, the middle lock cylinder 26 and the lower lock cylinder 24 are both provided with ball holes 6, and the lock cylinder holder 1 is provided with balls 61 corresponding to the ball holes 6.

The utility model discloses in, 4 accessible key inlet holes 21 of key insert in the key passageway 22 twist move the lock core 2 after, the hookup festival 23 in the lock core 2 together the 24 radial movement of lower section lock core of face, after well festival lock core 26 in the hookup festival 23 and lower section 24 blocks together with lower section 24 axial rotations of lock core, can drive in marble hole 6 and open lock transfer line 3 when marble 61 block to open the door.

The connecting gap 25 is arranged between the upper lock cylinder 25 and the middle lock cylinder 26, the reinforcing concave-convex card 5 is arranged on the upper lock cylinder 25, and the reinforcing concave-convex card 5 is a stress point, if the lock cylinder 2 is forcibly screwed to unlock by adopting forced unlocking, the connecting gap 25 is broken, the reinforcing concave-convex card 5 is clamped at the original position, and the unlocking transmission rod 3 cannot be driven no matter how the key is screwed, so that forced unlocking by forced unlocking can be prevented; and through leaving separation and reunion interval 27 between middle section lock core 26 and lower section lock core 24, no matter fill bubble gum or use the tinfoil, drive lower section lock core 24 and rotate, can not drive coupling joint 23 block at lower section lock core 24, just can not open the lock, drive the lock transfer line 3 of unmounting, can prevent the technique and unblank.

The utility model discloses in, as shown in fig. 1, fig. 2 and fig. 8, the joint has jump ring 252 on joint gap 251, and the effect of this jump ring 252 is when joint gap 251 fracture, and jump ring 252 is opened in joint gap 251 fracture department, can be filled up, can make and strengthen unsmooth card 5 and can not remove for strengthen unsmooth card 5 and its combination department in lock cylinder seat 1 and separate, strengthen unsmooth card 5 and act on the top in lock cylinder seat 1, thereby make and open lock transfer line 3 motionless.

As shown in fig. 3, a mounting groove 253 for placing a clamp spring 252 is arranged in the connecting gap 251, a plurality of connecting bars 254 are arranged at the connecting gap 251, the connecting bars 254 are used for being fixedly connected, the mounting groove 253 is used for placing the clamp spring 252, the thickness of the clamp spring 252 can be 0.5 mm-0.8 mm, the thickness of the connecting bars 254 is 0.1 mm-0.3 mm, after the connecting gap 251 is broken, the connecting bars 254 are broken and leaked, the clamp spring 252 can be clamped in, so that the upper lock cylinder 25 and the middle lock cylinder 26 are separated, the interval between the middle parts is 0.4 mm-0.5 mm, so that the reinforced concave-convex card 5 is jacked up, and cannot fall down, the upper lock cylinder 25 cannot move towards the lower lock cylinder 24, and the unlocking transmission rod 3 cannot be driven to rotate and open.

The utility model provides an open an embodiment of lock transfer line 3 and upper lock core 25, upper lock core 25 stretches out lock core seat 1 and is connected with lock transfer line 3 through opening lock transfer line joint 31, the first spring 32 has been cup jointed to the section that upper lock core 25 stretches out lock core seat 1, first spring 32 can make upper lock core 25 move to lower lock core 24 and increase a restriction pulling force, and can also make during the lock door, upper lock core 25 resumes to original position, thereby be convenient for strengthen unsmooth card 5 and return to original position; further, in order to protect the first spring 32, a spring protecting cover 34 for covering the first spring 32 is provided on the upper lock cylinder 25.

As shown in fig. 1 and 3, the bottom of the middle lock cylinder 26 is provided with a first half cut-off 261, the top of the lower lock cylinder 24 is provided with a second half cut-off 262 corresponding to the first half cut-off 261, the first half cut-off 262 is provided with a second spring 33, the middle lock cylinder 26 is driven by the key 10 to move towards the lower lock cylinder 24, the lower lock cylinder 24 also moves axially, when the first half cut-off 261 is clamped on the second half cut-off 262, the middle lock cylinder 26 and the lower lock cylinder 24 move axially together, after the marble 61 is clamped with the marble hole 6, the reinforcing concave-convex card 5 is clamped at the matching position of the lock cylinder seat 1, and the lock transmission rod 3 can be driven to rotate and open by the upper lock cylinder 25.

The utility model discloses in, lower section lock core 24 passes through locating pin 11 to be connected in lock core seat 1, is provided with the locating pin groove 12 that is used for connecting locating pin 11 in the lock core seat 1, is connected with the location bank on the locating pin groove 12, and the location bank makes lock core 2 can only be rotatory along the direction of unblanking.

In the utility model, as shown in fig. 4 and 7, the key 4 is provided with a plurality of spiral strips 41, the key channel 22 of the lock core 2 is provided with a lock core spiral groove corresponding to the spiral strips 41, specifically, the spiral strips 41 include at least one thin curved special-shaped spiral strip and a wide spiral strip, the lock core spiral groove includes a thin curved special-shaped spiral groove 263 and a wide spiral groove 264 corresponding to the thin curved special-shaped spiral strip 263, so that the design makes a common spiral key not be inserted into the key channel 22, and increases the unlocking difficulty; in addition, the lock core 2 is also eccentrically arranged, as shown in fig. 7, all lock core spiral grooves in the lock core 2 form eccentric convex baffle grooves, and lock core convex baffles 265 corresponding to the eccentric convex baffle grooves are arranged in the lock core 2; the eccentric convex baffle groove is eccentrically arranged, and the lock cylinder 2 is eccentrically connected in the lock cylinder seat 1; the spiral strip 41 is provided with marble position key teeth, the marble hole 6 corresponds to the marble position key teeth, and the marble hole 6 is arranged in the lock core spiral groove, so that the marble 61 on the lock core seat 1 and the marble hole 6 on the lock core 2 correspond to the marble position key teeth on the key 4, and after the lock core seat and the lock core are completely clamped, the lock opening transmission rod 3 can be rotated, and the unlocking difficulty is increased.

Specifically, the lock core in the lock core seat 1 is divided into at least two sections, which are respectively a connecting section 23 and a lower lock core 24, the key inlet hole 21 of the lock core 1 and the key 4 matched with the key inlet hole are both spiral, the connecting section 23 comprises an upper lock core 25 and a middle lock core 26, the neck part of the upper lock core 25 is provided with a reinforced concave-convex card 5 at the joint with the lock core seat 1, a snap spring 252 is arranged at the connecting gap 251 of the upper lock core 25 and the middle lock core 26, a clutch interval 27 capable of spiral transmission is arranged between the middle lock core 26 and the lower lock core 24, the neck part of the upper lock core 25 extending out of the lock core seat 1 is sleeved with a first spring 32, the joint of the clutch interval 27 of the lower lock core 24 and the middle lock core 26 is respectively provided with a second half-cut notch 262 and a first half-cut notch 261 (which can also be changed into a plug-in notch), the lower lock core 24 is positioned by a positioning pin 11 and can only rotate, the upper lock core 25 and the middle, the lock can rotate, the key 4 can also be screwed to move up and down to be separated and reunited, the reinforced concave-convex card 5 is rotated to unlock, the abnormal unlocking is forced to be in the strong resistance of the reinforced concave-convex card 5, and the joint of the upper lock cylinder 25 and the middle lock cylinder 26 of the unlocking transmission rod 3 can not be cracked and unlocked in advance. The utility model discloses not only prevent that the technique is unblanked more can resist the violence of opening by force and unblank, suitable multiple lock for the occasion still can carry out the lock core to usual lock and change the security performance that improves the lock. More specifically, the connecting link 23 connecting the upper lock cylinder 25 and the middle lock cylinder 26 can rotate, the key 4 can also be screwed to move up and down to be clutched and clamped, the reinforced concave-convex card 5 is rotated to unlock, the up and down movement of the connecting link 23 is achieved through butterfly rotation transmission, the reinforcing concave-convex card 5 is guided and leaned, the elastic force of the first spring 32, the lower lock cylinder 24 and the end part of the key 4 are positioned and rotated to generate spiral push-pull force, the abnormal unlocking is strongly resisted by the reinforced concave-convex card 5, the connecting part of the upper lock cylinder 25 and the middle lock cylinder 26 is cracked, and the lock cannot be unlocked. A plurality of spiral strips 41 are arranged on the spiral key 4, at least one of the spiral strips is a thin and wide special-shaped spiral strip, marble holes 6 and marbles 61 with different sizes are matched according to the thickness of the spiral strip 41, the spiral strip 41 on the key 4 and lock cylinder spiral grooves matched with all sizes and depths form eccentric convex baffle grooves, the marble holes 6 with different depths are arranged in the lock cylinder convex baffle 265, and the lock cylinder convex baffle 265 corresponds to the eccentric convex baffle grooves; a gap 261 (the middle lock cylinder 26 and the upper lock cylinder 25 can also be connected by small screws or welding or riveting loose) with the interval of about 0.1 mm is reserved at the joint of the upper lock cylinder 25 and the middle lock cylinder 26 by fine casting or fine processing, a plurality of connecting gears 254 are reserved in the gap, and after the joint of the middle lock cylinder 26 and the upper lock cylinder 25 is cracked and separated, the clamp spring 252 with elastic shrinkage and heightening is clamped into the mounting groove 263.

The utility model provides an embodiment, this embodiment includes lock core seat 1, lock core 2 and key 4, lock core 2 in the lock core seat 1 divide into two sections at least, be coupling joint 23 and lower section lock core 24 respectively, the key inlet hole 21 of lock core 1 and matched with key 4 are the spiral, coupling joint 23 includes upper lock core 25 and middle section lock core 26, the neck department of upper lock core 25 is equipped with strengthens unsmooth card 5, and the joint gap 251 of upper lock core 25 and middle section lock core 26 is equipped with jump ring 262, there is screw drive's separation and reunion interval 27 between middle section lock core 26 and the lower section lock core 24, upper lock core 25 stretches out and all is equipped with first spring 32 on the neck of lock core seat 1, the separation and reunion interval 27 of lower section lock core 24 and middle section lock core 26 combines the punishment and do not is equipped with the first half tang 261 and the second half tang 262 of mutual interlock; the positioning pin slot 12 of the lower lock core 24 is at least provided with one positioning pin 11, the lock core positioning pin slot 12 is also provided with a positioning ridge, the positioning pin 11 enables the lower lock core 24 not to move up and down but only to rotate, the positioning ridge enables the lock core 2 to only rotate along the unlocking direction, and the direct positioning of the lock core 2 and the lock core seat 1 upper and lower marble holes 6 is realized when the lock core 2 rotates in place; the connecting joint 23 formed by connecting the upper lock cylinder 25 and the middle lock cylinder 26 can rotate, the key 4 can also be screwed to move up and down to clutch the reinforced concave-convex card 5 to rotate and unlock, the up and down movement of the connecting joint 23 is realized by screw transmission, and is realized under the combined action of the guide of the reinforced concave-convex card 5, the elastic force of the first spring 32 and the spiral push-pull force generated by positioning the rotary key 5 at the end part of the lower lock cylinder 24 and the key 5; the abnormal unlocking is strong in the strength of the concave-convex card 5, the joint of the upper lock cylinder 25 and the middle lock cylinder 26 can be cracked and separated in advance, the unlocking is not realized, and the safety is ensured; a plurality of spiral strips 41 are arranged on the spiral key 4, at least one of the spiral strips is designed into a thin curved special-shaped spiral strip, marble position key teeth are arranged on the spiral strips 41, a lock core spiral groove matched with the spiral strips of the key is arranged in the key channel 22 of the lock core 2, a marble hole 6 matched with the marble position key teeth is arranged on the lock core spiral groove, according to the thickness of the spiral strip 41, the marble holes 6 and marbles 61 with different sizes are matched, the spiral strip 41 on the key 4 and all the matched lock core spiral grooves with different sizes and depths form an eccentric convex baffle groove, the lock core convex baffle 265, the marble holes 6 and marbles 61 with different depths are arranged in the lock core seat 1, the lower lock core 24 and the middle lock core 26, a first spring 32 on the neck of the upper lock core 25 extending out of the lock core seat 1 is thicker and covered by a spring protecting cover 24, and a second spring 33 on a second half-cut spigot 262 of the lower lock core 24 is weaker and thinner or can not be arranged; the reinforced concave-convex card 5 is used for opening and closing the lock card, namely the lock cylinder 2 is in a guide support in a screwing way, and also is used for positioning the lock cylinder 2 and the marble hole 6 of the lock cylinder seat 1, and the reinforced concave-convex card 5 can be large or small or can be arranged in 1 or more than one size according to the requirements of strong opening resistance and the like; the joint of the upper lock core 25 and the middle lock core 26 is formed by fine casting or fine processing, a connecting gap 251 with the interval of about 0.1 mm is reserved at the joint, a plurality of connecting bars 254 are reserved in the connecting gap, after the joint of the middle lock core 26 and the upper lock core 25 is broken off, a clamp spring 252 with the elastic shrinkage padding height of about 0.5 mm is inserted into the mounting groove 53, and the strength of the connecting bars 254 is higher than that of a normal unlocking and locking mechanism but lower than that of the reinforced concave-convex card 5; the middle lock core 26 and the upper lock core 25 can also be connected by small screws or welding or barium loose release, or a clamp spring 252 and a connecting block 254 are not arranged, but a proper method is used for leaving 0.4 mm of residual increase which is larger than the height of the clutch interval 27 of the middle lock core 26 and the lower lock core 24 after the middle lock core 26 and the upper lock core 25 are twisted and newly cracked, so that the residual increase is propped against the reinforced concave-convex card 5 to ensure that the concave-convex card is not separated and released, and the upper lock core is prevented from being pulled to be unlocked by strong magnetism, strong glue or other modes after cracking. According to the key 4 with depth, eccentric spiral groove key entrance hole 21 (figure 5) of different size, the key entrance hole 21 is eccentrically arranged on the lock core (1) (figure 6), the lock core 2 is eccentrically arranged on the round lock core base 1 (figure 7), a plurality of eccentric settings accumulated deviation enables to assemble marble 61 in a plurality of marble holes 6, use drilling-proof and other damage-resistant materials, the lock core base 1 is sheathed, the several aspects can be used simultaneously or partially, in the technical unlocking resistance and forced force unlocking resistance, only one marble 61 can normally stabilize the reinforced concave-convex card 5, the reinforced concave-convex card 5 can stabilize to prevent abnormal unlocking, when the key 4 is inserted into the key entrance hole 21 of the lock core 2, the marble 61 is ejected according to the set marble bit of each spiral strip 41, at this time, the key 4 is rotated, the lower lock cylinder 24 rotates firstly, the rotation time is the time when the connecting joint 23 slides down and separates from the reinforced concave-convex card 5 under the pulling of the spiral transmission spiral force, and after the lower sliding in place and the second half cut seam allowance 262 of the lower lock cylinder 24 are tightly meshed into a whole, the lower sliding in place and the reinforced concave-convex card rotate together with the unlocking transmission rod 3 arranged on the upper lock cylinder 25 to unlock. If the key 4 is not provided, a general tool of the spiral key inlet hole 21 is difficult to plug in, the eccentric spiral strip 41 is added, the center of the key inlet hole 21 is blocked, the key hole of the eccentric spiral strip is not provided with a lock cylinder convex stop 265, the number of marbles 61 is large, the number of long marbles 61 is large, the key 4 is also provided with a thin curved special-shaped spiral strip, the thin curved special-shaped spiral strip is smaller, the lock cylinder spiral groove is deeper, the spiral shielding body for shielding the marbles 61 is stronger, and the difficulty in technical opening is large. If the lock core 2 is divided into sections, the unlocking transmission rod 3 for unlocking is arranged at the top of the neck of the upper lock core 25 through the unlocking transmission rod joint 31, the reinforced concave-convex card 5 is arranged at the joint of the neck seam allowance of the upper lock core 25 and the lock core seat 1, the jacking force is firstly carried out no matter how to unlock or forcibly unlock the reinforced concave-convex card 5, although the strength of the reinforced concave-convex card 5 is high, the material quality of a forcible unlocking tool is good, most of the marbles 61 are removed by using a soft and hard quick opening tool method, and the horn mouth can be damaged and can slide down to unlock without breaking the reinforced concave-convex card 5 through most of the forcible unlocking tools, the utility model adopts the connecting gear 254 to be matched with the cracking protection method of the upper lock core 25 to ensure that the unlocking can not be carried out under the conditions, thereby solving the problems, the strength of the reinforced concave-convex card 5 is high, the strength of the connecting gear 254 is low, when the strength of the forcible unlocking tool exceeds the, the reinforced concave-convex card 5 is not damaged and the connecting rail 254 is firstly broken, so that the middle lock cylinder 26 and the upper lock cylinder 25 are firstly separated, the broken surface of the broken upper lock cylinder 25 is flat, so that the clamp spring 252 arranged at the joint of the middle lock cylinder 26 and the upper lock cylinder 25 is quickly and elastically contracted to be about 0.5 mm in height, or the connection is released, if the clamp spring is not arranged, the clamp spring is left to be left about 0.5 mm, because the difference between the height of the reinforced concave-convex card 5 and the distance of the clutch interval 27 is very small and is about 0.1 mm, the increased height of about 0.5 mm after the middle lock cylinder 26 and the upper lock cylinder 25 are broken can support the reinforced concave-convex card 5 to be not separated, and the tension of the first spring 32 at the neck of the upper lock cylinder 25 is stable, so that the reinforced concave-convex card 5 can not be pulled down by other means even if the support without the marble 61 is supported after the break, therefore, even if the marble 61 arranged on the connecting rail 254 and the upper lock cylinder 2 is pulled by a strong tear, the middle lock cylinder 26 and the upper lock cylinder 25 can only idle, and the lock cannot be opened, so that the lock is not only prevented from being unlocked technically, but also can be prevented from being unlocked forcibly, is suitable for locks in various occasions, and can be used for replacing the lock cylinders of common locks to improve the safety performance of the locks.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims (10)

1. A spiral shell moves mechanical lock of hookup lock core, wherein including lock core seat, lock core connected in the seat of said lock core, open the drive link of the lock connected with said lock core and key matching with said lock core; a key inlet hole and a key channel which are communicated with each other are arranged in the lock core; the lock core comprises a connecting joint and a lower lock core, the lower lock core can axially move in the lock core seat, the connecting joint can axially and radially move in the lock core seat, the connecting joint comprises an upper lock core and a lower lock core which are connected, a clutch interval is arranged between the middle lock core and the lower lock core, a connecting gap is arranged at the joint of the middle lock core and the upper lock core, a reinforcing concave-convex card is arranged on the upper lock core, ball holes are arranged on the middle lock core and the lower lock core, and balls corresponding to the ball holes are arranged in the lock core seat.

2. The mechanical lock with the spirally coupled lock cylinder as claimed in claim 1, wherein a clamp spring is clamped in the connecting gap.

3. A mechanical lock with a screw-coupled lock cylinder according to claim 2, wherein the upper lock cylinder extends out of the lock cylinder seat and is connected with the unlocking transmission rod through an unlocking transmission rod joint.

4. The mechanical lock with the spirally coupled lock cylinder as claimed in claim 3, wherein a section of the upper lock cylinder extending out of the lock cylinder seat is sleeved with a first spring.

5. A lock with a screw-coupling tumbler according to claim 4, wherein said upper tumbler is provided with a spring cover for covering said first spring.

6. The mechanical lock with the spirally coupled lock cylinder as claimed in claim 2, wherein an installation groove for placing the clamp spring is arranged in the connection gap.

7. A lock with a screw-coupling lock cylinder according to claim 6, wherein a plurality of connecting steps are provided in the connecting gap.

8. The mechanical lock with the screw-drive connection lock cylinder as claimed in claim 1, wherein a first half cut-out is formed in the bottom of the middle lock cylinder, a second half cut-out corresponding to the first half cut-out is formed in the top of the lower lock cylinder, and a second spring is arranged on the first half cut-out.

9. A mechanical lock with a screw-coupled lock cylinder according to claim 1, wherein the lower lock cylinder is connected in the lock cylinder seat by a positioning pin.

10. A lock with a screw-action coupling core as claimed in claim 1, wherein said key is provided with a plurality of screw bars.

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