Anti-theft padlock

Abstract

The utility model belongs to the technical field of padlocks, and particularly relates to an anti-theft padlock which comprises a shell, a lock cylinder, a lock cylinder and a lock cylinder. The locking structure is arranged in the lower shell; one end of the lock beam penetrates through the upper shell and extends into the lower shell, the other end of the lock beam can be matched with the locking structure, and a reset spring matched with the lock beam is arranged in the lower shell; wherein a key hole is formed in the bottom of the locking structure, and the lock beam can be locked through the locking structure. The anti-theft lock has the beneficial effects that by optimizing the locking structure and increasing the number and complexity of the marbles, the anti-theft capacity of the lock is improved, and then the lock beam is more stable in the locking state and is not prone to being pried or damaged by external force.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of padlocks, and particularly relates to a theftproof padlock. BACKGROUND

[0002] A padlock is the oldest and largest family in the world of locks, and other locks are derived from the padlock category. A padlock is provided with a ring-shaped or "I"-shaped metal shank, i.e., a "lock beam", which can be buckled to enable the padlock to be directly buckled with the lock body to form a closed lock.

[0003] Patent No. CN221169102U discloses a padlock, which comprises a lock shell, a spiral spring is fixedly arranged on one side of the inside of the lock shell, a limiting rod is fixedly installed above the spiral spring, and a lock hook is fixedly installed above the limiting rod.

[0004] The above patent realizes double locking through the cooperation of marbles and steel balls, forms a two-stage lock to improve the locking effect. However, because the double locking structure is set, the number of marbles is reduced, the structure is simplified, and finally the anti-theft capability is reduced, which needs to be improved. SUMMARY

[0005] The application aims to provide a theftproof padlock which can solve the above problems.

[0006] The application aims to provide a theftproof padlock, which comprises:

[0007] An outer shell comprising an upper shell body and a lower shell body;

[0008] A locking structure arranged in the lower shell body;

[0009] A lock beam, one end of which penetrates through the upper shell body and extends into the lower shell body, and the other end of which can cooperate with the locking structure, and a reset spring arranged in the lower shell body and cooperating with the lock beam;

[0010] The locking structure is provided with a keyhole at the bottom, and the lock beam can be locked through the locking structure.

[0011] The anti-theft padlock comprises an upper shell and a lower shell which are fixedly connected by fasteners to form a closed space, a locking structure installed in the lower shell, the locking structure being capable of unlocking the lock bar when a key is inserted and rotated, one end of the lock bar extending through the upper shell and into the lower shell, the other end of the lock bar being capable of cooperating with the locking structure, the lock bar being freely movable when unlocked and being fixed by the locking structure when locked, and a reset spring installed in the lower shell and cooperating with the lock bar to eject the lock bar when unlocked.

[0012] By optimizing the locking structure and increasing the number and complexity of the marbles, the anti-theft capability of the lock is improved, and the lock bar is more stable in the locked state and is not easily pried or damaged by external force.

[0013] Further, the locking structure comprises:

[0014] a lock cylinder having an insertion slot for inserting a key;

[0015] a locking hook arranged at the top of the lock cylinder and used for locking the lock bar;

[0016] a locking assembly arranged in the lower shell and cooperating with the lock cylinder to lock the lock cylinder;

[0017] wherein the lock bar is provided with an annular clamping groove adapted to the locking hook, and the upper shell is provided with a through hole for the lock bar to enter.

[0018] The lock cylinder has an insertion slot for inserting a key, and when a correct key is inserted into the insertion slot and rotated, the lock cylinder is rotated to drive other locking components to be unlocked. The locking hook is arranged at the top of the lock cylinder and used for locking the lock bar. When the lock bar is inserted into the shell through the through hole, the annular clamping groove of the lock bar cooperates with the locking hook on the lock cylinder to sequentially fix the lock bar so that the lock bar cannot move, thereby ensuring the stability and safety of the lock in the locked state. The locking assembly is arranged in the lower shell and cooperates with the lock cylinder to lock the lock cylinder, and when the correct key drives the lock cylinder to rotate, the locking assembly will be displaced accordingly to unlock the padlock. The cooperation of the locking hook and the annular clamping groove ensures the stability and firmness of the lock in the locked state.

[0019] Further, the locking assembly comprises:

[0020] marbles arranged in the lower shell, the marbles comprising an inner marble group and an outer marble group;

[0021] a support spring;

[0022] The lock core is provided with a plurality of round holes matched with the outer pin group, and the lower shell is provided with a telescopic slot for the movement of the inner pin group, and the supporting spring is installed in the telescopic slot and in contact with the inner pin group.

[0023] The pins are installed in the lower shell and divided into an inner pin group and an outer pin group. The inner pin group and the outer pin group have different sizes and shapes and can adapt to different key tooth shapes. When the correct key is inserted into the lock core, the key tooth shape will match the inner pin group and the outer pin group, allowing them to reach a specific position, thereby allowing the lock core to rotate. The supporting spring is installed in the telescopic slot in the lower shell and in contact with the inner pin group, which can provide the necessary elastic force for the inner pin group to move smoothly when the key is inserted and return to the initial position when the key is pulled out, thereby ensuring that the inner pin group can remain in a stable position when the lock is not opened by the correct key, preventing the lock core from being illegally rotated. At the same time, the lock core is provided with a plurality of round holes matched with the outer pin group, and when the key is correctly inserted and rotated, the outer pin group will be pushed into the round hole under the action of the supporting spring, thereby allowing the lock core to continue to rotate.

[0024] Through the cooperation of the inner pin group and the outer pin group and the elastic force of the supporting spring, the anti-theft performance of the lock can be effectively improved.

[0025] Further, the inner pin group is composed of a plurality of inner pins of different lengths, and the outer pin group is composed of a plurality of outer pins of different lengths, and the inner pins and the outer pins are at least eight.

[0026] The inner pin group is composed of a plurality of inner pins of different lengths, and the length and arrangement order of these inner pins can be adjusted and produced according to demand to adapt to different key tooth shapes. Only when the correct key is inserted into the lock core, the key tooth shape will match each inner pin of the inner pin group, thereby allowing the lock core to rotate. Since the inner pin group contains a plurality of inner pins of different lengths, it can provide a more complex locking mechanism, thereby increasing the anti-theft performance of the lock. The outer pin group is also composed of a plurality of outer pins of different lengths, and together with the inner pin group, it forms a complex locking system. When the key is inserted into the lock core, the outer pin group will be displaced under the push of the key and match the inner pin group, allowing the lock core to rotate smoothly. Since the outer pin group also contains a plurality of outer pins of different lengths, it further enhances the anti-theft ability of the lock.

[0027] In order to further improve the anti-theft effect of the lock, at least eight inner pins are provided in the locking assembly of the present application. By increasing the number of inner pin groups and outer pin groups and their length variation, a more complex locking mechanism is provided, thereby further improving the anti-theft performance of the lock.

[0028] Further, the top of the lower shell is provided with a limiting protrusion, the top of the limiting protrusion is in contact with the top of the inner part of the upper shell, and a limiting rotation groove is formed between the two, the locking hook is located in the rotation groove, and the rotation groove is fan-shaped and has an arc of 90°.

[0029] By arranging the limiting protrusion on the top of the lower shell, the top of the limiting protrusion is in close contact with the top of the inner part of the upper shell, and a limiting rotation groove is formed between the two, so that the locking hook can be kept within a specific range during rotation, thereby increasing the stability and safety of the lock. The limiting rotation groove is fan-shaped and has an arc of 90°, so that the locking hook can only move within this 90° range during rotation, which not only limits the rotation range of the locking hook, but also limits the rotation range of the lock cylinder, thereby preventing the locking hook and the lock cylinder from rotating excessively under illegal operation.

[0030] Further, the outer part of the lower half of the lower shell is provided with an outwardly extending mounting protrusion, the top of the mounting protrusion is provided with a mounting ring groove, and the bottom of the upper shell is provided with a downwardly extending annular plug that is matched with the mounting sliding groove.

[0031] The mounting protrusion is located on the outer part of the lower half of the lower shell and is an integral structure with the clamping shell, the top of the mounting protrusion is provided with a mounting ring groove, and the mounting ring groove is annular. The bottom of the upper shell is provided with a downwardly extending annular plug that is matched with the mounting protrusion and the mounting ring groove on the lower shell, so as to ensure the close connection between the upper shell and the lower shell. Through the cooperation of the mounting protrusion, the mounting ring groove and the annular plug, the overall installation of the lock body becomes simpler, the user only needs to align and insert the upper shell and the lower shell, and finally fix them using fasteners, thereby improving the installation efficiency and convenience.

[0032] The beneficial effects of the present application are:

[0033] 1. By optimizing the locking structure, the number and complexity of the springs are increased, thereby improving the anti-theft performance of the lock, and making the lock beam more stable in the locked state and not easy to be pried or damaged by external force.

[0034] 2. By cooperating the locking hook with the annular clamping groove, the stability and firmness of the lock in the locked state are ensured.

[0035] 3. By increasing the number and length of the inner spring group and the outer spring group, a more complex locking mechanism is provided, and the anti-theft performance of the lock is further improved. BRIEF DESCRIPTION OF DRAWINGS

[0036] Figure 1 is a structural schematic view of the present application;

[0037] Figure 2 is a structural schematic view of the present application without the upper shell.

[0038] Figure 3 is the internal structure schematic view of the utility model;

[0039] Figure 4 is the utility model's sectional view;

[0040] Figure 5 is the sectional view of another perspective of the utility model.

[0041] In the drawing, reference signs are: 100, shell;110, upper shell;111, through hole;120, lower shell;200, locking structure;210, keyhole;220, lock cylinder;221, insertion slot;230, locking hook;240, locking assembly;241, inner spring;242, outer spring;243, support spring;244, round hole;245, telescopic slot;300, lock beam;310, annular clamping groove;400, reset spring;500, limiting protrusion;510, limiting rotating groove;600, mounting protrusion;610, mounting annular groove;620, annular plug. DETAILED DESCRIPTION

[0042] The technical solutions in the embodiments of the present application will be clearly described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art belong to the scope of protection of the present application.

[0043] The terms "first", "second", and the like in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first", "second", etc. are usually a class, not limited to the number of objects, for example, the first object can be one or more. In addition, "and / or" in the specification and claims indicates at least one of the connected objects, and the character " / ", generally indicates that the front and rear associated objects are in an "or" relationship.

[0044] The anti-theft padlock provided by the embodiments of the present application will be described in detail below in combination with the drawings and specific examples and their application scenarios.

[0045] Embodiment 1:

[0046] As shown in Figures 1 to 5 , the present application provides an anti-theft padlock, comprising:

[0047] The shell 100 comprises an upper shell 110 and a lower shell 120.

[0048] The locking structure 200 is arranged in the lower shell 120.

[0049] The locking beam 300 has one end penetrating the upper shell 110 and extending into the lower shell 120, and the other end capable of cooperating with the locking structure 200, and the lower shell 120 is arranged with a reset spring 400 cooperating with the locking beam 300.

[0050] The locking structure 200 is arranged with a key hole 210 at the bottom, and the locking beam 300 can be locked through the locking structure 200.

[0051] In some embodiments of the present application, as shown in Figure 1 The shell 100 is composed of an upper shell 110 and a lower shell 120, which are fixedly connected together by fasteners to form a closed space. The locking structure 200 is installed in the lower shell 120 and can be unlocked when the key is inserted and turned to unlock the locking beam 300. One end of the locking beam 300 penetrates the upper shell 110 and extends into the lower shell 120, and the other end can cooperate with the locking structure 200. The locking beam 300 can be freely moved when it is not locked, and it is fixed by the locking structure 200 when it is locked and cannot be moved. At the same time, the reset spring 400 cooperating with the locking beam 300 is installed in the lower shell 120, which can pop out the locking beam 300 when it is unlocked. In addition, the bottom of the locking structure 200 is provided with a key hole 210, and the user can adjust the state of the locking structure 200 by inserting the key and turning it to unlock the locking beam 300.

[0052] By optimizing the locking structure 200, the number and complexity of the locking structure 200 are increased, thereby improving the anti-theft ability of the lock. Further, the locking beam 300 is more stable in the locked state and is not easy to be pried or damaged by external force.

[0053] Embodiment 2:

[0054] The present application provides a kind of anti-theft padlock, in addition to including above-mentioned technical features, the anti-theft padlock of the present application also includes the following technical features.

[0055] As shown in Figures 1 to 5 The locking structure 200 includes:

[0056] The lock cylinder 220 is arranged with an insertion slot 221 for inserting the key inside;

[0057] The locking hook 230 is arranged at the top of the lock cylinder 220 and is used to lock the locking beam 300;

[0058] The locking assembly 240 is arranged in the lower shell 120 and cooperates with the lock cylinder 220 to lock the lock cylinder 220;

[0059] The locking beam 300 is provided with a ring-shaped clamping groove 310 matched with the locking hook 230, and the upper shell 110 is provided with a through hole 111 for the locking beam 300 to enter.

[0060] In the embodiment of the present application, the lock cylinder 220 is internally provided with an insertion slot 221 for inserting a key, when the correct key is inserted into the insertion slot 221 and rotated, the lock cylinder 220 will be rotated, and then drive other locking components to be unlocked. The locking hook 230 is installed at the top of the lock cylinder 220, and is used to lock the locking beam 300. When the locking beam 300 is inserted into the shell 100 through the through hole 111, the ring-shaped clamping groove 310 will cooperate with the locking hook 230 on the lock cylinder 220, and then fix the locking beam 300, so that it cannot move, and ensure the stability and security of the lock in the locked state. The locking assembly 240 is installed in the lower shell 120, and cooperates with the lock cylinder 220, and can lock the lock cylinder 220, and at the same time, when the correct key drives the lock cylinder 220 to rotate, the corresponding displacement will occur, so as to realize the unlocking of the padlock. Through the cooperation of the locking hook 230 and the ring-shaped clamping groove 310, the stability and firmness of the lock in the locked state are ensured.

[0061] Embodiment 3:

[0062] The embodiment of the present application provides a theftproof padlock, in addition to the above technical features, the theftproof padlock of the embodiment of the present application further includes the following technical features.

[0063] As shown in Figures 3 to 5 The locking assembly 240 includes:

[0064] The inner and outer springs 241 and 242 are arranged in the lower shell 120, and include an inner spring group 241 and an outer spring group 242.

[0065] The support spring 243 is arranged in the lower shell 120.

[0066] The lock cylinder 220 is provided with a plurality of round holes 244 matched with the outer spring group 242, the lower shell 120 is provided with a telescopic slot 245 for the inner spring group 241 to move, and the support spring 243 is arranged in the telescopic slot 245 and in contact with the inner spring group 241.

[0067] In the embodiments of the present application, the pins are installed in the lower housing 120 and are divided into an inner pin group 241 and an outer pin group 242. The inner pin group 241 and the outer pin group 242 have different sizes and shapes and can adapt to different tooth shapes of keys. When the correct key is inserted into the lock cylinder 220, the tooth shape of the key will cooperate with the inner pin group 241 and the outer pin group 242, so that they reach a specific position, thereby allowing the lock cylinder 220 to rotate. The support spring 243 is installed in the telescopic groove 245 in the lower housing 120 and is in contact with the inner pin group 241, which can provide the necessary elastic force for the inner pin group 241 to smoothly move when the key is inserted and to return to the initial position when the key is pulled out, thereby ensuring that the inner pin group 241 can remain in a stable position when the lock is not opened by the correct key, preventing the lock cylinder 220 from being illegally rotated. At the same time, a plurality of round holes 244 are provided on the lock cylinder 220 to adapt to the outer pin group 242. When the key is correctly inserted and rotated, the outer pin group 242 will be pushed into the round hole 244 under the action of the support spring 243, thereby allowing the lock cylinder 220 to continue to rotate.

[0068] Through the cooperation of the inner pin group 241 and the outer pin group 242 and the elastic force of the support spring 243, the anti-theft performance of the lock can be effectively improved.

[0069] Further, the inner pin group 241 is composed of a plurality of inner pins 241 of different lengths, and the outer pin group 242 is composed of a plurality of outer pins 242 of different lengths, and the inner pins 241 and the outer pins 242 are at least eight.

[0070] The inner pin group 241 is composed of a plurality of inner pins 241 of different lengths, and the outer pin group 242 is composed of a plurality of outer pins 242 of different lengths, and the inner pins 241 and the outer pins 242 are at least eight.

[0071] In order to further improve the anti-theft effect of the lock, at least eight inner tumblers 241 are arranged in the locking assembly 240 of the present application, and by increasing the number of the inner tumbler 241 group and the outer tumbler 242 group and the length variation thereof, a more complex locking mechanism is provided, and the anti-theft performance of the lock is further improved.

[0072] Embodiment 4:

[0073] The anti-theft padlock provided by the embodiment of the present application further comprises the following technical features in addition to the above technical features.

[0074] As shown in Figure 2 , Figure 4 and Figure 5 , the top of the lower shell 120 is provided with a limiting protrusion 500, the top of the limiting protrusion 500 is in close contact with the top of the inner part of the upper shell 110, and a limiting rotation groove 510 is formed therebetween, the locking hook 230 is located in the rotation groove, and the rotation groove is in the shape of a sector with an arc of 90°.

[0075] In the embodiment of the present application, by arranging the limiting protrusion 500 on the top of the lower shell 120, the top of the limiting protrusion 500 is in close contact with the top of the inner part of the upper shell 110, and a limiting rotation groove 510 is formed therebetween, which can ensure that the locking hook 230 can be kept within a specific range during rotation, thereby increasing the stability and security of the lock. The limiting rotation groove 510 is in the shape of a sector with an arc of 90°, so that the locking hook 230 can only move within this 90° range during rotation, which not only limits the rotation range of the locking hook 230, but also limits the rotation range of the lock cylinder 220, thereby preventing excessive rotation of the locking hook 230 and the lock cylinder 220 under illegal operation.

[0076] Further, the outer part of the lower half of the lower shell 120 is provided with an outwardly extending mounting protrusion 600, the top of the mounting protrusion 600 is provided with a mounting ring groove 610, the bottom of the upper shell 110 is provided with a downwardly extending ring-shaped plug 620, and the ring-shaped plug 620 is matched with the mounting sliding groove.

[0077] In some embodiments of the present application, the mounting protrusion 600 is located outside the lower half of the lower shell 120 and is integrated with the card shell, and the top of the mounting protrusion 600 is provided with a mounting ring groove 610 in the form of a ring. The bottom of the upper shell 110 has a downwardly extending annular plug 620 which is adapted to the mounting protrusion 600 and the mounting ring groove 610 on the lower shell 120, and can ensure the close connection between the upper shell 110 and the lower shell 120. Through the cooperation of the mounting protrusion 600, the mounting ring groove 610 and the annular plug 620, the overall installation of the lock body becomes simpler, and the user only needs to align and insert the upper shell 110 with the lower shell 120, and finally fix it using fasteners, thereby improving the installation efficiency and convenience.

[0078] It should be noted that in this document, the terms "comprise", "comprising", or any other variant thereof are intended to cover non-exclusive inclusions, so that processes, methods, articles or devices that include a series of elements not only include those elements, but also include other elements not explicitly listed, or include elements inherent to such processes, methods, articles or devices. Without more limitations, the element defined by the statement "comprising a" does not exclude the presence of additional identical elements in the process, method, article or device comprising the element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, but can also include performing functions in a substantially simultaneous manner or in reverse order, for example, the described method can be performed in an order different from that described, and various steps can also be added, omitted or combined. In addition, the features described with reference to certain examples can be combined in other examples.

[0079] The embodiments of the present application are described above in combination with the drawings, but the present application is not limited to the above specific embodiments, and the above specific embodiments are only illustrative, not restrictive, and those skilled in the art can make many forms under the inspiration of the present application without departing from the scope of the present application and the scope protected by the claims, which are all within the protection of the present application.

Claims

1. An anti-theft padlock, characterized in that: include: The outer casing (100) includes an upper casing (110) and a lower casing (120); A locking structure (200) is provided inside the lower housing (120); The locking beam (300) has one end that passes through the upper housing (110) and extends into the lower housing (120), and the other end that can cooperate with the locking structure (200). A return spring (400) that cooperates with the locking beam (300) is provided in the lower housing (120). The locking structure (200) has a keyhole (210) at its bottom, which allows the locking beam (300) to be locked. The lower housing (120) has a limiting protrusion (500) on its top. The top of the limiting protrusion (500) contacts the top inside the upper housing (110), forming a limiting rotation groove (510) between them. The locking hook (230) is located in the rotation groove, and the rotation groove is fan-shaped with an arc of 90°.

2. A theftproof padlock according to claim 1 wherein: The locking structure (200) includes: The lock cylinder (220) has an insertion slot (221) for inserting a key inside; A locking hook (230) is provided on the top of the lock cylinder (220) and is used to lock the lock beam (300); A locking assembly (240) is disposed within the lower housing (120) and cooperates with the lock cylinder (220) for locking the lock cylinder (220); The locking beam (300) is provided with an annular groove (310) that is adapted to the locking hook (230), and the upper housing (110) is provided with a through hole (111) for the locking beam (300) to enter.

3. A theftproof padlock according to claim 2 wherein: The locking component (240) includes: The ball is disposed inside the lower housing (120), including an inner ball group and an outer ball group; Support spring (243); The lock cylinder (220) is provided with multiple round holes (244) that are adapted to the outer pin group, and the lower housing (120) is provided with a telescopic groove (245) for the inner pin group to move, and the support spring (243) is installed in the telescopic groove (245) and contacts the inner pin group.

4. A theftproof padlock according to claim 3 wherein: The inner ball group consists of multiple inner balls (241) of different lengths, and the outer ball group consists of multiple outer balls (242) of different lengths, and there are at least eight inner balls (241) and eight outer balls (242).

5. The anti-theft padlock according to claim 1, characterized in that: The lower half of the lower housing (120) is provided with an outwardly extending mounting protrusion (600), and the top of the mounting protrusion (600) is provided with a mounting annular groove (610). The bottom of the upper housing (110) is provided with a downwardly extending annular plug (620), and the annular plug (620) is adapted to the mounting slide groove.

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