GB2558016A

GB2558016A - Anti-technical unlocking lock cylinder set

Info

Publication number: GB2558016A
Application number: GB1708178.7A
Authority: GB
Inventors: Li Jun; Liao Haiqiang
Original assignee: Zhongshan City Jixin Core Lock Co Ltd
Current assignee: Zhongshan City Jixin Core Lock Co Ltd
Priority date: 2015-09-17
Filing date: 2015-10-20
Publication date: 2018-07-04
Anticipated expiration: 2035-10-20
Also published as: GB201708178D0; WO2017045242A1; CN105113859B; CN105113859A; GB2558016B

Abstract

An anti-technical unlocking lock cylinder set, comprising a lock housing (1), a lock cylinder (2) and a spring pin assembly (3). At least one spring pin (34) of the spring pin assembly (3) consists of a main spring pin (341) and an anti-technical unlocking spring pin (342) integrally connected. The anti-technical unlocking spring pin (342) is provided with a conical slot (3421) thereon. Pin holes (23) in communication with anti-technical unlocking spring pin holes (22) are provided in the lock cylinder (2). Pins (4), hollow covers (5), and pin resetting springs (6) for resetting the pins (4) inwardly are provided in the pin holes (23). The lock housing (1) is provided with pin (4) exposing holes (13) or slots (11) for exposed ends of the pins (4) to expose when the pins (4) are exposed. Inner ends of the pins (4) are in cone-shaped, and conical ends (41) of the pins (4) can slide into the conical slots (3421). The spring force of the pin resetting spring (6) is less than that of a pin spring (32). When a correct key is inserted such that the conical ends (41) of the pins (4) fall into the conical slots (3421), upper end faces of the main spring pins (341) are flushed with the lock cylinder (2).

Description

(56) Documents Cited:

EP 2500493 A1 CN 203654899 U CN 002816258 Y US 3590615 A

E05B 15/14 (2006.01)

CN 204983953 U CN 201535095 U US 7647798 B1 US 20100326150 A1 (86) International Application Data:

PCT/CN2015/092267 Zh 20.10.2015 (58) Field of Search:

INT CL E05B

Other: CNKI, CNABS, VEN, EPODOC (87) International Publication Data:

WO2017/045242 Zh 23.03.2017 (71) Applicant(s):

Zhongshan City Jixin Core Lock Co., LTD No.6, Xingyu Road, Xiaolan, Zhongshan, Guangdong Province, China (72) Inventor(s):

Jun Li

Haiqiang Liao (74) Agent and/or Address for Service:

Xuesong Yang

Drysgol Street, Radyr, CARDIFF, CF15 8BS, United Kingdom (54) Title of the Invention: Anti-technical unlocking lock cylinder set Abstract Title: Anti-technical unlocking lock cylinder set (57) An anti-technical unlocking lock cylinder set, comprising a lock housing (1), a lock cylinder (2) and a spring pin assembly (3). At least one spring pin (34) of the spring pin assembly (3) consists of a main spring pin (341) and an anti-technical unlocking spring pin (342) integrally connected. The anti-technical unlocking spring pin (342) is provided with a conical slot (3421) thereon. Pin holes (23) in communication with anti-technical unlocking spring pin holes (22) are provided in the lock cylinder (2). Pins (4), hollow covers (5), and pin resetting springs (6) for resetting the pins (4) inwardly are provided in the pin holes (23). The lock housing (1) is provided with pin (4) exposing holes (13) or slots (11) for exposed ends of the pins (4) to expose when the pins (4) are exposed. Inner ends of the pins (4) are in cone-shaped, and conical ends (41) of the pins (4) can slide into the conical slots (3421). The spring force of the pin resetting spring (6) is less than that of a pin spring (32). When a correct key is inserted such that the conical ends (41) of the pins (4) fall into the conical slots (3421), upper end faces of the main spring pins (341) are flushed with the lock cylinder (2).

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TECHNICAL UNLOCKING RESISTING LOCK CYLINDER

TECHNICAL LIELD

The present invention relates to a lock cylinder structure.

BACKGROUND

At present, most of ordinary lock cylinders in the market are not resistant to technical unlocking and do not have antitheft effects. Particularly, after a lock bumping gun arises in the market, a lock cylinder with an ordinary key can be unlocked in several seconds under the conditions that the lock bumping gun is used or a poking method is used, so that users’ life and property safety is threatened severely. The present invention is particularly researched and developed against the phenomenon, and the market demand is met.

SUMMARY

An objective of the present invention is to overcome the defects in the prior art and provide a lock cylinder which is more reasonable in structure and higher in antitheft performance and can have effects of technical unlocking resistance.

In order to solve the technical problems, the following technical scheme is adopted for the present invention:

A technical unlocking resisting lock cylinder comprising a lock casing, a lock inner container and a plurality of marble assemblies arranged in the lock casing and the lock inner container, wherein a marble of at least one marble assembly comprises a main marble and a technical unlocking resisting marble which are connected to form an integrated body; each marble hole in the lock inner container, which correspond to the main marble and the technical unlocking resisting marble, consists of a main marble hole and a technical unlocking resisting marble hole which are communicated with each other; the technical unlocking resisting marble is provided with conical grooves; the lock inner container is provided with pin holes communicated with the technical unlocking resisting marble holes; pins, hollow sealing covers and pin returning springs enabling the pins to return inwards are arranged in the pin holes; the lock casing is provided with pin sliding-out insertion holes or insertion grooves for the exposed ends of the pins to be inserted when the pins are exposed; the inner ends of the pins are conical and the conical ends of the pins can slide into the conical grooves; the elasticity of the pin returning spring is smaller than that of a bead spring; when a key is inserted correctly to make the conical ends of the pins slide down into the conical grooves, the upper end face of the main marble is flush with the lock inner container.

In the improvement scheme of the technical unlocking resisting lock cylinder, marbles of at least two marble assemblies each comprise the main marble and the technical unlocking resisting marble which are connected to form an integrated body. When a door is in a locked state, the upper end of the technical unlocking resisting marble of at least one marble can push the pins out to cause the outer ends of the pins to be inserted into right-angle parts in the pin sliding-out insertion holes or the insertion grooves; and the upper ends of the technical unlocking resisting marbles of the remaining marbles are provided with inclined planes enabling the outer ends of the pins to just be flush with the lock inner container.

In the improvement scheme of the technical unlocking resisting lock cylinder, the number of the conical grooves is two or more.

In the improvement scheme of the technical unlocking resisting lock cylinder, the ends of both the lock inner container and the lock casing close to a key insertion hole are provided with two anti-drilling pin holes for anti-drilling pins to be inserted respectively, one of the anti-drilling pins is beside the main marble of the marble assembly, and the other anti-drilling pin is in front of the technical unlocking resisting marble, so that when the main marble of the marble assembly is drilled away, the technical unlocking resisting marble still enables a flat bead to clamp the lock casing and the lock inner container.

In the improvement scheme of the technical unlocking resisting lock cylinder, the end of the lock inner container close to the key insertion hole is provided with a steel ball hole for placing a steel ball, and the steel ball hole and the pin hole are located at the same horizontal position.

Compared with the prior art, the prevent invention has the beneficial effects that since the marble of at least one marble assembly consists of the main marble and the technical unlocking resisting marble which are connected to be an integrated body, the technical unlocking resisting marble is provided with the conical grooves and the pin holes are internally provided with the pins, the hollow sealing covers and the pin returning springs enabling the pins to return inwards, when a door is in a locked state, the pin can be hidden in the pin hole of the lock inner container and can also be partially exposed in the pin sliding-out insertion holes or the insertion grooves of the lock casing; when a lawbreaker performs technical unlocking, he must slightly rotate the lock inner container, at the time the pins in the lock inner container rotate slightly along with the lock inner container; at the time the outer ends of the pins are expose to be clamped in the pin sliding-out insertion holes or the insertion grooves of the lock casing, or the two ends of the pins abut against the inclined planes of the conical grooves and the inner wall of the lock casing respectively under the inclined plane effect of the conical grooves. As a result, the lock inner container cannot go on rotating to unlock the lock, and the objective of technical unlocking resistance is achieved. Therefore, the technical unlocking resisting lock cylinder is more reasonable in structure and higher in antitheft performance.

The present invention is further described in detail below in combination with drawings and embodiments.

BRIEF DESCRIPTION OF DRAWINGS

FIG. 1 is a three-dimensional schematic diagram of Embodiment 1 of the present invention (after a key is inserted);

FIG 2 is an assembling schematic diagram of Embodiment 1 of the present invention;

FIG 3 is a partial decomposition schematic diagram of Embodiment 1 of the present invention;

FIG 4 is a first structural schematic diagram (during a locked state) of Embodiment 1 of the present invention;

FIG 5 is a second structural schematic diagram (during a locked state) of Embodiment 1 of the present invention;

FIG 6 is a state diagram (when the conical ends of pins slide downs to limiting grooves) of Embodiment 1 of the present invention during technical unlocking;

FIG 7 is an enlarged drawing of a part I of FIG 6;

FIG 8 is a state diagram of Embodiment 1 of the present invention after correct insertion of a key;

FIG 9 is a three-dimensional schematic diagram of Embodiment 2 of the present invention (after a key is inserted);

FIG 10 is a structural schematic diagram (during a locked state) of Embodiment 2 of the present invention;

FIG 11 is a schematic diagram of another embodiment of a marble which forms an integrated body by a main marble and a technical unlocking resisting marble.

DESCRIPTION OF EMBODIMENTS

The invention relates to a technical unlocking resisting lock cylinder. As shown in FIGs. 1, 2, 3, 4 and 5, the technical unlocking resisting lock cylinder comprises a lock casing 1, a lock inner container 2 and a plurality of marble assemblies 3 arranged in the lock casing 1 and the lock inner container 2. The marble assemblies 3 each comprise a plug 31, a bead spring 32, a flat bead 33 and a marble 34; here, the marble 34 of at least one marble assembly 3 consists of a main marble 341 and a technical unlocking resisting marble 342 which are connected to form an integrated body; each marble hole in the lock inner container, which corresponds to the main marble 341 and the technical unlocking resisting marble 342, consists of a main marble hole 21 and a technical unlocking resisting marble hole 22 which are communicated with each other; the technical unlocking resisting marble 342 is provided with conical grooves 3421; the lock inner container 2 is provided with pin holes 23 communicated with the technical unlocking resisting marble holes 22; pins 4, hollow sealing covers 5 and pin returning springs 6 enabling the pins to return inwards are arranged in the pin holes 23; and the lock casing 1 is provided with pin sliding-out insertion holes 13 or insertion grooves 11 for the exposed ends of the pins to be inserted when the pins are exposed. In Embodiment 1, the insertion holes are adopted; and in Embodiment 2, the pin sliding-out insertion grooves are adopted. The inner ends of the pins 4 are conical and the conical ends 41 of the pins 4 can slide into the conical grooves 3421; the elasticity of the pin returning spring 6 is smaller than that of the bead spring 32, and when a door is in a locked state, the outer ends of the pins 4 can be tangent to the external diameter of the lock inner container, as shown in FIG. 4. Preferably, as shown in FIG. 5, when the door is in the locked state, the outer ends of the pins 4 slide out of through holes of the sealing cover 5 and then enter pin sliding-out insertion holes 13 or the insertion grooves 11 of the lock casing, so that when the key is pulled out and the door is the locked state, as shown in FIG. 5, except that the flat bead falls between the lock casing and the lock inner container to cause the lock inner container to fail to rotate, since the elasticity of the pin returning spring 6 is smaller than that of the bead spring 32, after the marble returns, the technical unlocking resisting marble 342 offsets the effect of the pin returning spring 6 and then pushes the pins outwards to cause the outer ends of the pins to slide into the pin sliding-out insertion holes 13 or the insertion grooves 11. As a result, the pins 4 are clamped between the lock inner container and the lock casing to make the lock inner container fail to rotate, and the objective of locking the lock inner container by the pins and the flat bead is achieved. When a lawbreaker adopts poking or impact technical means to make the marbles rise to try to unlock the lock, he must slightly rotate the lock inner container through a certain angle; when the conical ends 41 of the pins slide into the conical grooves 3421 of the technical unlocking resisting marble 342, the lawbreaker thinks that he can go on rotating the lock inner container to unlock the lock cylinder and thus increase the rotating angle, the pins rotate along with the lock inner container, at the time the lower inclined planes of the conical grooves 3421 act on the conical heads of the pins 4 to make the pins slide outside the lock inner container, the outer ends of the pins just abut against the inner wall of the lock casing below the pin sliding-out insertion holes 13 or the insertion grooves 11 of the lock casing 1, as shown in FIGs. 6 and 7; that is, the two ends of the pins abut against the inclined planes of the conical grooves 3421 and the inner wall of the lock casing, so that the continuous rotation of the lock inner container is limited, the objective of technical unlocking cannot be achieved, and the technical unlocking resistance is achieved. When the key is inserted correctly and the conical ends 41 of the keys 4 slide down into the conical grooves 3421, the upper end face of the main marble 341 is flush with the lock inner container 2. Therefore, when the key is inserted correctly and the marble rises to cause the main marble to be flush with the lock inner container, the conical ends 41 of the pins 4 are just aligned with the conical grooves 3421 of the technical unlocking resisting marble 342. As a result, under the effect of the pin returning spring 6, while the conical ends 41 of the pins 4 slide down into the conical grooves 3421 of the technical unlocking resisting marble 342, the outer end faces of the pins 4 are also located in the lock inner container, as show in FIG. 8; that is, the pins do not limit the rotation of the lock inner container, and the key can be used to rotate the lock inner container to open the door.

As can be seen from above, the marbles 34 of at least one marble assembly 3 each consist of the main marble 341 and the technical unlocking resisting marble 342 which are connected to form an integrated body. The technical unlocking resisting marble 342 is provided with conical grooves; and pins 4, hollow sealing covers 5 and pin returning springs 6 enabling the pins to return inwards are arranged in the pin holes 23. When a door is in a locked state, the pins can be hidden in pin holes of the lock inner container and can also be partially exposed in pin sliding-out insertion holes 13 or insertion grooves 11 of the lock casing. When a lawbreaker performs technical unlocking, he must slightly rotate the lock inner container, and at the time the pins in the lock inner container rotate slightly along with the lock inner container; at the time the outer ends of the pins are expose to be clamped in the pin sliding-out insertion holes 13 or the insertion grooves 11 of the lock casing, or the two ends of the pins abut against the inclined plane of the conical grooves 3421 and the inner wall of the lock casing respectively under the inclined plane effect of the conical grooves. As a result, the lock inner container cannot go on rotating to unlock the lock, and the objective of technical unlocking resistance is achieved. Therefore, the technical unlocking resisting lock cylinder is more reasonable in structure and higher in antitheft performance.

Preferably, the marbles 34 of two marble assemblies 3 each consist of the main marble 341 and the technical unlocking resisting marble 342 which are connected to form one integrated body; when a door is in a locked state, the upper end of the technical unlocking resisting marble 342 of one marble can push the pins out to cause the outer ends of the pins to be inserted into right-angle parts 3422 in the pin sliding-out insertion holes 13 or the insertion grooves 11, as shown in FIG. 5; and the upper end of the technical unlocking resisting marble 342 of the other marble is provided with an inclined plane 3423 enabling the outer ends of the pins to be flush with the lock inner container, as shown in FIG. 4. Thus, during the technical unlocking, the two marble assemblies can be complementary; that is, when a lawbreaker pokes the two marble assemblies upwards to perform technical unlocking, when one marble rises to the outer end of the corresponding pin to be just flush with the lock inner container, the outer end of the pin corresponding to the other marble is inserted in the pin sliding-out insertion hole 13 or the insertion groove 11 of the lock casing, so that during the technical unlocking, the lock inner container always cannot rotate to perform unlocking; that is, during the technical unlocking, the outer end of at least one pin is always inserted into the pin sliding-out insertion hole 13 or the insertion groove 11.

The number of the conical grooves 3421 of the same technical unlocking resisting marble 342 is two or more, wherein only one conical groove enables the upper end face of the main marble 341 to be just flush with the lock inner container when the conical end 41 of the pin 4 slides down into this conical groove; this conical groove is a technical unlocking resisting function groove, and the remaining conical grooves are pseudo function grooves. When a lawbreaker adopts a poking technology to perform unlocking, he rotates the lock inner container while making the marble rise, when an obvious hand feeling is generate after the conical ends slides into the function grooves, the thief thinks that the poking is successful, then he goes on rotating the lock inner container, since at the time the upper end face of the main marble is not flush with the lock inner container, he cannot go on rotating the lock inner container to perform unlocking, and the antitheft effect of further poking technology unlocking resistance is achieved.

The conical grooves 3421 can be notch type grooves, as shown in FIG. 3. During the production, the conical grooves are directly processed directly through a milling cutter, or the conical grooves are integrally formed when the technical unlocking resisting marble is formed. Of course, the conical grooves 3421 can also be blind slotted holes drilled with a drill, as shown in FIG. 11.

In this embodiment, as shown in FIGs. 1, 2 and 3, the ends of both the lock inner container and the lock casing close to a key insertion hole are provided with two anti-drilling pin holes 12 and 24 for anti-drilling pins 7 to be inserted respectively, one of the anti-drilling pins is beside the main marble 341 of the marble assembly, and the other anti-drilling pin is in front of the technical unlocking resisting marble 342, so that when the main marble 341 of the marble assembly is drilled away, the technical unlocking resisting marble 342 can still support the flat bead to enable the flat bead to still clamp the lock casing and the lock inner container. Since the upper half part of the main marble cannot fall due to the effect of the technical unlocking resisting marble 342, the lock inner container cannot be rotated to perform unlocking, and thus the antitheft effect of improving drilling unlocking resistance is achieved. Similarly, in order to prevent the lawbreaker from attempting to use a drilling rig to damage the pin, the end of the lock inner container close to the key insertion hole is provided with a steel ball hole 25 for placing a steel ball 8, and the steel ball hole 25 and the pin holes 23 are located at the same horizontal position. When the lawbreaker attempts to use the drilling rig to damage the pins, the steel ball 8 certainly causes the drill to be deflected. After the steel ball 8 is installed in the steel ball hole 25, the steel ball 8 is blocked through the sealing cover in case of falling.

Though the present invention is described in detail in accordance with the embodiments, it is obvious to those skilled in the art that various variations or modifications can be performed on the present invention without departing from the principle and spiritual range of the present invention defined by the claims. Therefore, the detailed descriptions of the disclosed embodiments are only used for explanation and are not used for limiting the invention, and the protective scope is defined by the content of the claims.

Claims

CLAIMS What is claimed is:

1. A technical unlocking resisting lock cylinder, comprising a lock casing (1), a lock inner container (2) and a plurality of marble assemblies (3) arranged in the lock casing (1) and the lock inner container (2), wherein the marble assemblies (3) each comprise a plug (31), a bead spring (32), a flat bead (33) and a marble (34); each marble (34) of at least one marble assembly (3) consists of a main marble (341) and a technical unlocking resisting marble (342) which are connected to form an integrated body; each marble hole in the lock inner container, which corresponds to the main marble (341) and the technical unlocking resisting marble (342), consists of a main marble hole (21) and a technical unlocking resisting marble hole (22) which are communicated with each other; the technical unlocking resisting marble (342) is provided with conical grooves (3421); the lock inner container (2) is provided with pin holes (23) communicated with the technical unlocking resisting marble holes (22); pins (4), hollow sealing covers (5) and pin returning springs (6) enabling the pins to return inwards are arranged in the pin holes (23); the lock casing (1) is provided with pin sliding-out insertion holes (13) or insertion grooves (11) for the exposed ends of the pins to be inserted when the pins are exposed; the inner ends of the pins (4) are conical and the conical ends (41) of the pins (4) can slide into the conical grooves (3421); the elasticity of the pin returning spring (6) is smaller than that of the bead spring (32); when a key is inserted correctly to make the conical ends (41) of the pins (4) slide down to the conical grooves (3421), the upper end face of the main marble (341) is flush with the lock inner container (2).

2. The technical unlocking resisting lock cylinder according to claim 1, wherein marbles (34) of at least two marble assemblies (3) each consist of the main marble (341) and the technical unlocking resisting marble (342) which are 11 connected to form an integrated body; when a door is in a locked state, the upper end of the technical unlocking resisting marble (342) of at least one marble can push the pins out to cause the outer ends of the pins to be inserted into right-angle parts (3422) in the pin sliding-out insertion holes (13) or the insertion grooves (11); and the upper ends of the technical unlocking resisting marbles (342) of the remaining marbles are provided with inclined planes (3423) enabling the outer ends of the pins to be flush with the lock inner container.

3. The technical unlocking resisting lock cylinder according to claim 1 or 2, wherein the number of the conical grooves (3421) is two or more.

4. The technical unlocking resisting lock cylinder according to claim 3, wherein the ends of both the lock inner container and the lock casing close to a key insertion hole are provided with two anti-drilling pin holes (12 and 24) for anti-drilling pins (7) to be inserted respectively, one of the anti-drilling pins is beside the main marble (341) of the marble assembly, and the other anti-drilling pin is in front of the technical unlocking resisting marble (342), so that when the main marble (341) of the marble assembly is drilled away, the technical unlocking resisting marble (342) still enables the flat bead to clamp the lock casing and the lock inner container.

5. The technical unlocking resisting lock cylinder according to claim 4, wherein the end of the lock inner container (2) close to the key insertion hole is provided with a steel ball hole (25) for placing a steel ball (8), and the steel ball hole (25) and the pin hole (23) are located at the same horizontal position.