CN117888771A - Antitheft lock cylinder and key matched with same - Google Patents

Abstract

The invention relates to the technical field of locks, in particular to an anti-theft lock cylinder and an adaptive key thereof. The lock cylinder comprises a lock cylinder shell and a lock cylinder body, wherein a key hole is formed in the lock cylinder body, a plurality of groups of pin tumbler hole groups which are arranged side by side are arranged in the lock cylinder shell, each pin tumbler hole group comprises a plurality of pin tumbler grooves, the pin tumbler grooves on the same group of pin tumbler hole groups are arranged in a straight line, each pin tumbler groove penetrates through the lock cylinder shell, the lock cylinder body and the key hole, anti-unlocking pins or lock cylinder pins are arranged in the pin tumbler grooves, and at least one group of anti-unlocking pins is arranged in each pin tumbler groove. The device can effectively prevent the unlocking tools such as a conventional single hook and tinfoil from being opened, greatly improves the difficulty of the lock body to be opened, and simultaneously effectively avoids the forced opening prevention. The invention is mainly applied to the anti-theft lock core and the matched key thereof.

Description

Antitheft lock cylinder and key matched with same

Technical Field

The invention relates to the technical field of locks, in particular to an anti-theft lock cylinder and an adaptive key thereof.

Background

The types of anti-theft lock cylinders in the market are basically divided into three types: the first is a class A marble lock cylinder marketed in about 2000, and after one month of the lock cylinder is marketed, tools such as a single hook and a tinfoil tool appear, and the tools can technically open the class A lock cylinder within a few seconds; the second type is a B-class lock cylinder marketed in about 2008, and the lock cylinder is marketed for three months, so that the situation of technological second opening of tools such as targeted single-hook tools, tinfoil tools and the like occurs; the third is C-level blade lock core marketed in 2015, and the lock core is opened by sponge rubber strip tool, key striking tool, tooth pulling tool and other technology seconds after being marketed for one year.

The technical unlocking tool for the A-level, B-level and C-level lock cylinders has more than 100 percent, more than 90 percent of lock cylinders can be technically unlocked by the tool within A few seconds, and research on technical parts of China finds that the A-level, B-level and C-level lock cylinders can be technically unlocked, and the main problems are that the marble tooth numbers on the A-level and B-level keys are pits made on the keys, the C-level blade lock cylinders are grooves made on the keys, so that tooth number strokes of the marble or blades in the lock cylinders are within the width and thickness of the keys, and after the keys are pulled out, square holes of 2*9 millimeters are reserved on the lock cylinders, so that the unlocking tool is conveniently inserted, and the tooth number strokes are in the key holes and are visible by naked eyes, namely, the lock cylinders can be unlocked by the tool technology. In the lock king competition in 2020, a master can successfully open the latest super C-level lock cylinders of 5 different factories in less than two minutes by using a self-made tool. Through the current transmission of various self media, various unlocking tools are easily purchased, and if the unlocking tools are utilized by lawbreakers, potential safety hazards of personnel and property can be brought to the vast users.

Disclosure of Invention

In order to overcome the defects in the prior art, the invention provides an anti-theft lock cylinder and an adaptive key thereof. The lock core structure can effectively prevent technical tools such as a single hook, a tinfoil sponge adhesive tape, a key bumping tool and the like from being simply opened, and simultaneously can avoid the failure problem caused by violent damage of the lockset, thereby greatly improving the safety level of the lockset.

In order to solve the technical problems, the invention adopts the following technical scheme:

The utility model provides an anti-theft lock core, includes lock core shell, lock core body, this internal key hole that is provided with of lock core, the space thickness of key hole on the lock core body is 1mm, and space height is 4mm, be provided with the marble hole group that the multiunit set up side by side in the lock core shell, marble hole group includes a plurality of marble grooves, and a plurality of marble grooves on the same group marble hole group are sharp and arrange, the marble groove runs through lock core shell, lock core body and key hole setting, be provided with anti-open marble or lock core marble in the marble groove, anti-open marble is provided with a set of at least.

The marble hole groups are provided with three rows, and the marble hole groups are arranged in parallel.

The number of ball grooves in each ball hole group is the same, or the number of ball grooves in each ball hole group is different.

The outer end of the lock core body is provided with a steel sleeve, the steel sleeve is arranged around the lock core body, and the arrangement thickness of the steel sleeve is 2-3mm.

The lock core marble comprises marble of various lengths, and the marble length of the anti-unlocking marble is larger than that of the lock core marble.

The anti-open marble is arranged in any marble groove except the innermost marble groove.

The diameter of the anti-opening marble is matched with the inner diameter of the marble groove, and the diameter of the anti-opening marble is larger than that of the lock core marble.

The diameter of the anti-unlocking marble is 0.2mm thicker than that of the lock core marble.

The key hole is 1mm in the space thickness that sets up in the lock core body.

The utility model provides a key of theftproof lock core adaptation, includes the key body, be provided with on the key body with the rack of bullet groove looks adaptation, the thickness of key body is 1mm, the height of rack on the key body is 3mm, be provided with on key body, the rack respectively with prevent opening hole, the tooth of pellet shot from a slingshot looks adaptation.

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

The design of arranging different numbers of marble holes in the multi-stage marble hole group and different marble hole groups improves the key quantity of the lock body, improves the number of marble series of the lock core marble and also improves the key quantity of the lock body; when the bottom of the anti-unlocking marble contacts the bottom of the key hole, the length of the top flush with the outer wall of the lock cylinder body is set, so that the problem that tools such as a single hook extend into the lock is solved, and when the anti-unlocking marble is jacked up by an unlocking tool, the whole lock cylinder is locked and cannot rotate; the steel sleeve solves the problem that the lock core body is violently opened from the outside, and improves the anti-forced opening level of the lock body. Through the setting of key body 1mm rack height 3mm, can effectually prevent to dial tooth instrument through the key body 1mm thick key Kong Bodong highly be 3 mm's marble and prevent the insertion of tinfoil instrument on the lock core body, this device structural design is ingenious, can effectively prevent opening of unlocking means such as conventional single hook, tinfoil, very big improvement the degree of difficulty that the lock body was opened, effectively avoided preventing opening by force simultaneously.

Drawings

FIG. 1 is a schematic diagram of the structure of the present invention;

FIG. 2 is a disassembled front view of the lock cylinder of the present invention;

FIG. 3 is a front view of the outer surface of the lock cylinder of the present invention;

FIG. 4 is a schematic view of the internal pin configuration of the present invention;

FIG. 5 is a schematic view of a key portion of the present invention;

FIG. 6 is a front view of a key portion of the present invention;

In the figure: 1 is a lock core shell, 2 is a lock core body, 3 is a key hole, 4 is a bullet groove, 5 is an anti-unlocking marble, 6 is a lock core marble, 7 is a steel sleeve, 8 is a key body, 9 is a toothed rail, and 10 is a hole.

Detailed Description

In order that the above-recited objects, features and advantages of the present application will be more clearly understood, a more particular description of the application will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings. It should be noted that, without conflict, the embodiments of the present application and features in the embodiments may be combined with each other.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced otherwise than as described, and therefore the scope of the present invention is not limited to the specific embodiments disclosed below.

As shown in fig. 1 to 6, an anti-theft lock core comprises a lock core shell 1 and a lock core body 2, wherein a key hole 3 is arranged in the lock core body 2, a plurality of groups of pin hole groups which are arranged side by side are arranged in the lock core shell 1, each pin hole group comprises a plurality of pin grooves 4, the pin hole groups are formed by arranging a plurality of pin grooves 4 in a straight line, the pin grooves 4 penetrate through the lock core shell 1, the lock core body 2 and the key hole 3, anti-opening pins 5 or lock core pins 6 are arranged in the pin grooves 4, one of the anti-opening pins 5 and the lock core pins 6 can only be selected in one pin groove 4, the anti-opening pins 5 and the lock core pins 6 are all in the structure of the existing pins, namely, the anti-opening pins 5 are composed of springs, main pins and auxiliary pins, and at least one group of anti-opening pins 5 is arranged. The anti-unlocking pins 5 are arranged in at least one pin groove 4, and a plurality of groups of anti-unlocking pins 5 can be arranged, so that the lock core can be prevented from being unlocked by all unlocking tools with thickness, such as single hooks.

Preferably, the pin tumbler hole groups are arranged in three rows, and the pin tumbler hole groups are arranged in parallel. The pin tumbler hole group corresponds to a rack on the key.

Preferably, the number of pin grooves 4 in each pin hole group is the same, or the number of pin grooves 4 in each pin hole group is different. In the three rows of pin hole groups, the middle pin hole group can adopt five groups of pin grooves 4, namely five-tooth arrangement, and the two side pin hole groups adopt six groups of pin grooves 4, namely six-tooth arrangement. Therefore, various different combination modes can be realized, and the difficulty of unlocking the lock body by a tool is improved.

Preferably, the outer end of the lock core body 2 is provided with a steel sleeve 7, the steel sleeve 7 is arranged around the lock core body 2, and the arrangement thickness of the steel sleeve 7 is 2-3mm. The steel sleeve 7 adopts an annular structure, the inner diameter of the steel sleeve 7 is matched with the outer diameter of the lock cylinder shell 1, the steel sleeve is sleeved on one side of the lock cylinder shell 1 outwards, the lock body is prevented from being forcibly impacted by a screwdriver tool and the like, the lock cylinder body 2 is prevented from cracking, and the anti-forced unlocking performance of the lock body is effectively improved.

Preferably, the plug pins 6 comprise pins of a plurality of different lengths, and the length of the pins of the anti-unlocking pins 5 is larger than that of the plug pins 6. The anti-opening marble 5 and the lock core marble 6 are provided with nine corresponding tooth numbers, the length of the marble below the anti-opening marble 5 is longest, the upper end is beneficial to the gap between the lock core shell 1 and the lock core body 2 under the condition that the lower end abuts against the key hole 3, as long as the thickness exists below the anti-opening marble 5, the upper end of the anti-opening marble 5 extends out of the lock core body 2 through the marble groove 4, the lock core body 2 can not rotate, the lock core body 2 is locked, eight different types of the lock core marble 6 exist, and the length difference between the adjacent types of marble below is 0.5mm.

Preferably, the opening preventing pins 5 are provided in any of the pin grooves 4 except the innermost pin groove 4. Besides the innermost marble groove 4 of the lock core body 2, the anti-unlocking marble 5 can be arranged in any number of marble grooves 4 at any positions, and the random arrangement of the anti-unlocking marble 5 and the lock core marble 6 improves the key quantity of the lock body.

Preferably, the diameter of the anti-opening marble 5 is matched with the inner diameter of the marble groove 4, and the diameter of the anti-opening marble 5 is larger than that of the plug marble 6.

Preferably, the diameter of the anti-opening pin 5 is 0.2mm thicker than the diameter of the plug pin 6. When the anti-unlocking marble 5 is jacked up by an unlocking tool, the lock core marble 5 is inserted into the lock core shell 1 after extending out of the lock core body 2, and other lock core marbles 6 with smaller diameters than the anti-unlocking marble 5 are in a free state, so that the lock core marble cannot be aligned and opened by tools such as a single hook.

Preferably, the keyhole 3 is provided with a space thickness of 1mm in the lock cylinder body 2. Normally, the space height of the pin tumbler grooves 4 and the key holes 3 is 4mm, and when the space height of the key holes 3 is 1mm, the space height of the rack 9 on the lock cylinder body 2 is 3mm. At this time, a single hook and other tools cannot be inserted into the space of 1mm at the bottom of the key to dial the marble of 3mm in place, so that the tool with the dial teeth is prevented from being inserted into the space at the bottom of the key of the lock cylinder to be technically opened.

The utility model provides a key of theftproof lock core adaptation, includes key body 8, and the thickness of key body 8 is 1mm, is provided with on the key body 8 with the rack 9 of marble groove 4 looks adaptation, the height of rack 9 on key body 8 is 3mm, rack 9 corresponds with marble hole group and a plurality of marble groove 4 and sets up, is provided with on key body 8, the rack 9 respectively with prevent opening hole 10, the tooth of marble 6 looks adaptation of marble 5, lock core marble 6. The lock core marble 6 model in the marble groove 4 is matched with the tooth on the toothed rail 9, the anti-unlocking marble 5 corresponds to a hole 10 on the key body 8, and the hole can ensure that the bottom of the anti-unlocking marble 5 is contacted with the key hole 3, so that the lock deadlock of the lock core body 2 is avoided.

The present invention has been described in detail with reference to the preferred embodiments thereof, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the spirit of the present invention, and the present invention is not limited to the above embodiments.

Claims (10)

1. An antitheft lock cylinder is characterized in that: including lock core shell (1), lock core body (2), be provided with key hole (3) in lock core body (2), be provided with multiunit marble hole group that sets up side by side in lock core shell (1), marble hole group includes a plurality of marble grooves (4), and a plurality of marble grooves (4) on the same group marble hole group are sharp and arrange, marble groove (4) run through lock core shell (1), lock core body (2) and key hole (3) set up, be provided with in marble groove (4) and prevent opening marble (5) or lock core marble (6), prevent opening marble (5) are provided with a set of at least.

2. An anti-theft lock cylinder according to claim 1, characterized in that: the marble hole groups are provided with three rows, and the marble hole groups are arranged in parallel.

3. An anti-theft lock cylinder according to claim 1, characterized in that: the number of the bullet grooves (4) in each bullet hole group is the same, or the number of the bullet grooves (4) in each bullet hole group is different.

4. An anti-theft lock cylinder according to claim 1, characterized in that: the lock core is characterized in that a steel sleeve (7) is arranged at the outer end part of the lock core body (2), the steel sleeve (7) is arranged around the lock core body (2), and the arrangement thickness of the steel sleeve (7) is 2-3mm.

5. An anti-theft lock cylinder according to claim 1, characterized in that: the lock core marble (6) comprises marble of various lengths, and the marble length of the anti-unlocking marble (5) is larger than that of the lock core marble (6).

6. An anti-theft lock cylinder according to claim 1, characterized in that: the anti-opening marble (5) is arranged in any marble groove (4) except the innermost marble groove (4).

7. An anti-theft lock cylinder according to claim 1, characterized in that: the diameter of the anti-opening marble (5) is matched with the inner diameter of the marble groove (4), and the diameter of the anti-opening marble (5) is larger than the diameter of the lock core marble (6).

8. An anti-theft lock cylinder according to claim 7, characterized in that: the diameter of the anti-opening marble (5) is 0.2mm thicker than the diameter of the lock core marble (6).

9. An anti-theft lock cylinder according to claim 1, characterized in that: the space height of the key hole (3) arranged in the lock cylinder body (2) is 1mm.

10. A key adapted to the anti-theft lock cylinder according to any one of claims 1 to 9, characterized in that: the anti-unlocking lock comprises a key body (8), wherein a toothed rail (9) matched with the bullet groove (4) is arranged on the key body (8), and holes (10) and teeth matched with the anti-unlocking marble (5) and the lock core marble (6) are arranged on the key body (8) and the toothed rail (9).