CN110616969A

CN110616969A - Anti-theft lock

Info

Publication number: CN110616969A
Application number: CN201810633947.4A
Authority: CN
Inventors: 周望林; 赵西锋
Original assignee: ZTE Corp
Current assignee: ZTE Corp
Priority date: 2018-06-20
Filing date: 2018-06-20
Publication date: 2019-12-27
Also published as: WO2019242569A1

Abstract

The embodiment of the invention provides an anti-theft lock, which comprises an upper lock body and a lower lock body, wherein the upper lock body comprises an extension part, the lower lock body comprises an accommodating chamber which is used for being matched with the extension part to accommodate the upper lock body, and a blocking structure is formed between the inner wall of the accommodating chamber and the outer wall of the extension part in a lock closing state and is used for preventing external substances from entering the accommodating chamber. Because under the lock closed condition, can form between the outer wall of the inner wall that the lower lock body held the cavity and the extension on the upper lock body and block the structure, through this block the structure, can prevent that foreign matter from getting into through the clearance between the outer wall that holds the inner wall of cavity and extension and holding the cavity inside, and then can prevent that foreign matter from destroying the structure that holds the cavity inside, promoted the theftproof ability of tool to lock.

Description

Anti-theft lock

Technical Field

The invention relates to the technical field of locks, in particular to an anti-theft lock.

Background

The communication outdoor cabinet is applied to outdoor environment, and valuable communication equipment and batteries are installed inside the cabinet. The theft incident of the outsider brings great economic loss to the client and simultaneously causes the whole network to be paralyzed for a short time. The event that a local cabinet lock is damaged by a flexible tool and a rigid tool for multiple times drives the lock to improve the self anti-damage capability of the lock from the structural aspect, and the anti-theft capability of the whole outdoor cabinet is improved.

The anti-theft locks used by the industrial outdoor products belong to the same series mostly, the structural form belongs to the old form many years ago, and the anti-theft capability is weak. The structure of the existing lock can be seen from fig. 1 and fig. 2, fig. 1 includes an upper lock body 11 and a lower lock body 12, the lower lock body 12 has a receiving cavity 13 matching with the size of the upper lock body 11, in the locked state, the upper lock body 11 is just located in the receiving cavity 13, the receiving cavity 13 is communicated with the lock core on the lower lock body 12, because the inner wall of the receiving cavity 13 and the outer wall of the upper lock body 11 are smooth, in the locked state, a through gap is formed between the upper lock body 11 and the lower lock body 12, once a thief familiar to the lock inserts a rigid tool along the gap, the rigid tool can enter the receiving cavity 13 along the gap between the inner wall of the receiving cavity 13 and the outer wall of the upper lock body 11, so that the lock core of the lock can be easily damaged. The lock in fig. 2 also includes an upper lock body 21 and a lower lock body 22, the lock cylinder of the lock in fig. 2 is located on the upper lock body 21 (not shown in fig. 2), the lower lock body 22 in fig. 2 also includes a receiving cavity 23 for receiving the upper lock body 21 and the lock cylinder disposed on the upper lock body 21, in the lock closed state, the upper lock body 21 and the lock cylinder are both located in the receiving cavity 23, and similarly, since the inner wall of the receiving cavity 23 and the outer wall of the upper lock body 21 are both smooth, the lock can be easily opened by a thief, so that it is important to enhance the anti-theft capability of the original lock and enhance the anti-theft capability of the whole outdoor cabinet.

Disclosure of Invention

The anti-theft lock provided by the embodiment of the invention mainly solves the technical problems that: when the existing lockset is in a lock closing state, a straight-through exposed gap can be formed between the upper lock body and the lower lock body, so that the problem of poor anti-theft capability of the existing lockset is caused.

In order to solve the above technical problem, an embodiment of the present invention provides a new anti-theft lock, including:

the lock comprises an upper lock body and a lower lock body, wherein the upper lock body comprises an extension part, the lower lock body comprises an accommodating cavity used for being matched with the extension part to accommodate the upper lock body, and a blocking structure is formed between the inner wall of the accommodating cavity and the outer wall of the extension part in a lock closing state and is used for preventing foreign matters from entering the accommodating cavity.

The invention has the beneficial effects that:

according to the anti-theft lock provided by the embodiment of the invention, in the lock closing state, a blocking structure can be formed between the inner wall of the lower lock body accommodating chamber and the outer wall of the extending part on the upper lock body, and through the blocking structure, external substances can be prevented from entering the accommodating chamber through a gap between the inner wall of the accommodating chamber and the outer wall of the extending part, so that the structures in the accommodating chamber can be prevented from being damaged by the external substances, and the anti-theft capacity of the lock is improved.

Additional features and corresponding advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Drawings

FIG. 1 is a schematic view of a conventional lock of the present invention;

FIG. 2 is a schematic view of another conventional lock of the present invention;

fig. 3 is a schematic structural diagram of an anti-theft lock in a first example according to a first embodiment of the present invention;

FIG. 4-1 is a schematic illustration of a first configuration of a raised barrier and extension according to an embodiment of the present invention;

FIG. 4-2 is a schematic illustration of a second configuration of the raised stop and extension in accordance with an embodiment of the present invention;

FIGS. 4-3 are schematic views showing the positions of a third structure of the raised stop and the extension in accordance with one embodiment of the present invention;

fig. 5 is a schematic structural diagram of an anti-theft lock in a second example according to a first embodiment of the present invention;

FIG. 6 is a schematic view of the position between the bump stop and bump mating lands in an embodiment of the present invention;

FIG. 7 is a schematic view of a first configuration of a male blocking platform and a male mating platform in accordance with an embodiment of the present invention;

FIG. 8-1 is a schematic view of a second configuration of a bump stop and bump mating table in accordance with an embodiment of the present invention;

FIG. 8-2 is a schematic view of a third configuration of a bump stop and bump mating table in accordance with an embodiment of the present invention;

FIG. 9-1 is a schematic view of a fourth configuration of a bump stop and bump mating table in accordance with an embodiment of the present invention;

FIG. 9-2 is a schematic view of a fifth configuration of a bump stop and bump mating table in accordance with an embodiment of the present invention;

figures 9-3 are cross-sectional views of a lower lock body in accordance with one embodiment of the present invention;

fig. 10 is a schematic view of a barrier structure in a first example provided in the second embodiment of the present invention;

fig. 11 is a schematic view of a barrier structure in a second example provided in the second embodiment of the present invention;

fig. 12 is a schematic diagram of a blocking structure in a third example provided in the second embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention are described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The first embodiment is as follows:

in order to improve the anti-theft capability of the existing lock, the embodiment of the invention provides a new anti-theft lock, which comprises an upper lock body and a lower lock body, wherein the lower lock body comprises a containing chamber for containing the upper lock body, the upper lock body comprises an extending part, the extending part in the embodiment of the invention refers to a part extending from the upper part of the upper lock body, namely when the bottom of the upper lock body comprises a lock core structure, the extending part refers to a part not comprising the lock core structure on the upper lock body, and certainly, when the lock core structure does not exist on the upper lock body, the extending part is equal to the upper lock body. In the closed state of the lock, a blocking structure is formed between the inner wall of the accommodating chamber and the outer wall of the extension part, and the blocking structure is used for preventing foreign matters from entering the inside of the accommodating chamber through a gap between the inner wall of the accommodating chamber and the outer wall of the extension part.

It should be understood that the blocking structure may be a sheet-like structure, a table-body-like structure, or both a sheet-like structure and a table-body-like structure.

In a first example provided by the embodiment of the present invention, a schematic structural diagram of the anti-theft lock may be shown in fig. 3, the blocking structure of the anti-theft lock includes a protruding blocking platform 30, the protruding blocking platform 30 is a protruding structure formed on an inner wall of the accommodating chamber 320, the anti-theft lock shown in fig. 3 includes an upper lock body 31 and a lower lock body 32, the upper lock body 31 includes a lock cylinder 310 and an extension portion 311, in this example, the extension portion 311 refers to an area extending from an upper end of the upper lock body 31 and not including a lock cylinder structure, the lower lock body 32 includes an accommodating chamber 320 for accommodating the upper lock body 31 in a lock-closed state, at this time, the lock cylinder 310 of the upper lock body 31 is also located in the accommodating chamber 320. It should be noted that in other embodiments, the lower lock body 32 may include a key cylinder structure therein.

It should be understood that as shown in fig. 4-1, the raised barrier 30 may be formed on the inner sidewall of the receiving chamber 320, and in the locked closed state, the bottom surface of the end of the extension 311 may be in intimate contact with at least a portion of the top surface of the raised barrier 30, with the raised barrier 30, i.e., at least a portion of the barrier structure, being located between the inner sidewall of the receiving chamber 320 and the outer sidewall of the extension 311; alternatively, in some other embodiments, the outer sidewall of the extension 311 may be in close contact with at least a portion of the side of the bump stop 30 in the lock closed state, i.e., as shown in fig. 4-2, when the bump stop 30, i.e., the stop structure, is located between the inner sidewall of the receiving chamber 320 and the outer sidewall of the extension 311.

As shown in fig. 4-3, the raised barrier 30 may also be formed on the edge of the inner bottom wall of the receiving chamber 320. likewise, in the locked closed position, the bottom surface of the end of the extension 311 may be in intimate contact with at least a portion of the top surface of the raised barrier 30, with the raised barrier 30, i.e., the barrier structure, between the inner bottom wall of the receiving chamber 320 and the outer bottom wall of the extension 311; alternatively, the outer sidewall of the extension 311 may be brought into close contact with at least a part of the side surface of the boss blocking stage 30.

In the first example provided by the embodiment of the present invention, by forming the protruding blocking platform 30 on the inner wall of the accommodating chamber 320, at least a section of close contact area exists between the outer surface of the protruding blocking platform 30 in the lock-closed state and the outer surface of the extending portion 311, and the close contact area increases the difficulty of foreign matters entering the accommodating chamber 320.

In the second example provided by the embodiment of the present invention, an anti-theft lock is further provided, specifically referring to fig. 5, the anti-theft lock provided by this example also includes an upper lock body 51 and a lower lock body 52, the upper lock body 51 includes an extension portion 510 and a protrusion fitting table 511 connected to a bottom surface of an end portion of the extension portion 510, it should be noted that, the protrusion fitting table 511 in this example may completely cover the bottom surface of the end portion of the extension portion 510, or a part of a blank area may be left at an edge of the end portion of the extension portion 510. The lower lock body 52 in this embodiment includes a receiving chamber 520 for cooperating with the extending portion 510 to receive the upper lock body 51, in the lock closed state, the extending portion 510 and the protruding fitting platform 511 of the upper lock body 51 are both located in the receiving chamber 520, a protruding stopping platform 521 is formed on the inner wall of the receiving chamber 520, the size and shape of the protruding stopping platform 521 match with the size and shape of the protruding fitting platform 511, the fitting surface of the protruding fitting platform 511 matches with the stopping surface of the protruding stopping platform 521, in the lock closed state, the protruding stopping platform 521 and the protruding fitting platform 511 together form a stopping structure, and at this time, the fitting surface and the stopping surface form a tight contact, so that the foreign matter can be effectively prevented from entering the receiving chamber 520.

It should be understood that the raised blocking table 521 in this example may be formed on the inner sidewall of the receiving chamber 520, and may also be formed on the inner bottom wall edge of the receiving chamber 520.

In the anti-theft lock structure shown in fig. 5, the protrusion blocking platform 521 is composed of a blocking boss, correspondingly, the protrusion matching platform 511 is also composed of a matching boss, optionally, the width of the blocking boss may be greater than 2 mm and less than 5 mm, and the corresponding position relationship between the blocking boss and the matching boss can be seen in fig. 6, the matching surface of the protrusion matching platform 511 in this embodiment refers to a surface of the protrusion matching platform 511 that can contact with the protrusion blocking platform 521 in the lock-closed state, the blocking surface of the protrusion blocking platform 521 refers to a surface of the protrusion blocking platform 521 that can contact with the protrusion matching platform 511 in the lock-closed state, in fig. 6, the matching surface of the protrusion matching platform 511 is a side surface of the protrusion matching platform 511, the blocking surface of the protrusion blocking platform 521 is a side surface of the protrusion blocking platform 521, and in the lock-closed state, the side surface of the matching platform is in close contact with the side surface of the blocking platform, the blank area of the bottom surface of the end of the extension portion 510 is in close contact with the top surface of the barrier boss, and the blank area of the bottom surface of the end of the extension portion 510 is the area of the bottom surface of the end of the extension portion 510 where the mating boss is not connected.

In order to further improve the anti-theft performance of the lock, and increase the difficulty of foreign objects entering the interior of the accommodating chamber 520, when the blocking surface of the protruding blocking table 521 contacts the mating surface of the protruding mating table 511 in this example, the contacting portion may have a plurality of bent structures, that is, the contacting portion is a non-planar structure. For example, the protruding blocking platform 521 in this example may be a stepped platform, a wavy platform, or a sawtooth platform, and correspondingly, the protruding matching platform 511 may also be a stepped platform, a wavy platform, or a sawtooth platform.

When the protrusion blocking platform 521 is a stepped platform, the structure of the protrusion blocking platform 521 formed on the inner sidewall of the accommodating chamber 520 and the protrusion matching platform 511 connected to the bottom surface of the end portion of the extension portion 510 can be seen in fig. 7, in this case, the protrusion blocking platform 521 includes at least two continuous bosses, and the bosses can be arranged in a sequence from high to low, that is, the sequence in fig. 7, but of course, in some embodiments, the arrangement sequence of the bosses may also be irregular, for example, the bosses may be sequentially increased and then sequentially decreased. It should be further noted that, when the protruding stopping platform 521 is a stepped platform, the stopping surface of the protruding stopping platform 521 may have a concave-convex structure, that is, a concave-convex structure may be formed on the top surface or the side surface of each protruding platform, so as to further increase the anti-theft performance of the lock, for example, the stopping surface may be in a wave shape or a sawtooth shape.

It should be noted that, when the protruding blocking table 521 is a wave-shaped table, the structure of the protruding blocking table 521 formed on the inner side wall of the accommodating chamber 520 and the protruding matching table 511 connected to the bottom surface of the end portion of the extending portion 510 can be seen from fig. 8-1, at least a part of the shielding surface of the protruding blocking table is in a wave shape, correspondingly, the matching surface of the protruding matching table 511 corresponding to the part of the shielding surface should also be in a matching wave shape, and in the locked state, the wave shape on the shielding surface matches with the wave shape on the matching surface to form a tight contact. It should be noted that the protrusion engaging platform 511 in fig. 8-1 covers the bottom surface of the end of the extending portion 510 completely, but in some embodiments, there may be a portion of a blank area on the bottom surface of the end of the extending portion 510, and the blank area may also have a wave shape, and at this time, the surface of the protrusion blocking platform 521 corresponding to the blank area of the extending portion 510 should also have a wave shape, so that in the lock-off state, the wave shape on the blank area of the extending portion 510 can be engaged with the wave shape on the corresponding surface of the protrusion blocking platform 521 to form a tight contact. It should be noted that fig. 8-1 only shows a structure of the wave-shaped table body, in other embodiments, when the protruding blocking table is the wave-shaped table body, the side surface of the protruding blocking table that is engaged with the protruding engaging table may also be wave-shaped, and correspondingly, the engaging surface of the protruding engaging table that is engaged with the side surface of the protruding blocking table should also have a corresponding wave-shaped texture, as shown in fig. 8-2.

When the protruding blocking table 521 is a sawtooth table, the structure of the protruding blocking table 521 formed on the inner side wall of the accommodating chamber 520 and the protruding matching table 511 connected to the bottom surface of the end portion of the extending portion 510 can be seen from fig. 9-1, at least a part of the shielding surface of the protruding blocking table is in a sawtooth shape, correspondingly, the matching surface of the protruding matching table 511 corresponding to the part of the shielding surface should also be in a matched sawtooth shape, and in the locked state, the sawtooth shape on the shielding surface is matched with the sawtooth shape on the matching surface to form a tight contact. It should be noted that, in some embodiments, the blank area of the extension portion 510 may also be formed with a saw-tooth shape, and at this time, the surface position of the protruding blocking table 521 corresponding to the blank area of the extension portion 510 should also be formed with a saw-tooth shape, so that, in the lock-off state, the saw-tooth shape on the blank area of the extension portion 510 can be matched with the saw-tooth shape on the corresponding surface of the protruding blocking table 521 to form a tight contact. Similarly, fig. 9-1 only shows a structure of a sawtooth-type table, in other embodiments, when the protrusion blocking table 521 is a sawtooth-type table, the side surface of the protrusion blocking table 521 that is engaged with the protrusion engaging table 511 may also be sawtooth-type, and correspondingly, the engaging surface of the protrusion engaging table 511 that is engaged with the side surface of the protrusion blocking table 521 should also have corresponding sawtooth lines, as shown in fig. 9-2.

In order to prevent theft in all directions, the blocking structure in the embodiment of the present invention may surround a circumference of the inner sidewall of the accommodating chamber 520, specifically, the blocking structure may form a closed circular ring or an unsealed circular ring, and in this case, a plurality of independent blocking structures exist in the anti-theft lock, and the blocking structures are discontinuously surrounded a circumference of the inner sidewall of the accommodating chamber 520. It should be understood that in an anti-theft lock, a portion of the blocking surface of the raised blocking platform 521 may be wavy, and another portion of the blocking surface may be saw-tooth, or may have other irregular shapes.

Taking the example that the protruding blocking table 521 surrounds the inner side wall of the accommodating chamber 520 in a closed manner, that is, the protruding blocking table 521 is formed on the inner side wall of the accommodating chamber 520 in a circumferential manner, when the protruding blocking table 521 is a sawtooth table body, all blocking surfaces of the protruding blocking table 521 may have sawtooth grains, or only part of blocking surfaces may have sawtooth grains, in particular, when a sub-chamber for accommodating the lock cylinder is provided in the accommodating chamber 520, part of side surfaces of the protruding blocking table 521 corresponding to the sub-chamber may preferably have sawtooth grains, and a cross-sectional view of the lower lock body may be shown in fig. 9-3. The saw tooth pattern of fig. 9-3 corresponds to the area of the receiving chamber for receiving the lock cylinder, i.e. the area of the receiving chamber corresponding to the dashed line of fig. 9-3. For a front cross-sectional view of the dashed area, see FIG. 9-2, FIG. 9-2 also includes the corresponding configuration of the raised engagement platform 511 and the extension 510.

Similarly, when the protruding blocking platform 521 enclosing the inner sidewall of the accommodating chamber 520 for one circle is a wavy platform, at least a part of the side surface of the protruding blocking platform 521 may have a wavy line, and particularly, when the accommodating chamber 520 has a sub-chamber for accommodating the lock cylinder, a part of the side surface of the protruding blocking platform 521 corresponding to the sub-chamber may preferably have a wavy line.

It should be noted that, the protruding stopping table 521 according to the embodiment of the present invention may be integrally formed with the main body of the lower lock body 52, that is, the protruding stopping table 521 may be fixedly connected with the main body of the lower lock body 52, where the main body of the lower lock body 52 refers to a structure of the lower lock body 52 except the protruding stopping table 521, and of course, in some other embodiments, the protruding stopping table 521 may be detachably connected with the main body of the lower lock body 52, and after the protruding stopping table 521 is detachably connected with the main body of the lower lock body 52, the inner side surface of the protruding stopping table 521 is also a part of the inner wall of the accommodating chamber 520. Similarly, the protrusion engagement portion 511 of the present embodiment may be integrally formed with the bottom surface of the end portion of the extension portion 510, and in other embodiments, the protrusion engagement portion 511 may be detachably connected to the bottom surface of the end portion of the extension portion 510.

In the anti-theft lock provided by the embodiment of the invention, the inner part of the accommodating chamber is isolated by the convex blocking platform formed on the inner wall of the accommodating chamber, so that common non-violently invaded external materials cannot enter the accommodating chamber, and the anti-theft performance of the lock is improved.

Example two:

while the above embodiments describe the anti-theft lock with the blocking structure of the table-body type structure, the embodiment of the present invention provides the anti-theft lock with the blocking structure of the sheet type structure. The anti-theft lock provided by the embodiment of the invention also comprises an upper lock body and a lower lock body, wherein the lower lock body comprises a containing chamber for containing the upper lock body, the upper lock body comprises an extension part, the extension part in the embodiment of the invention refers to a part which extends out of the upper lock body and is used for matching with the inner wall of the containing chamber of the lower lock body, and in the locking state, a blocking structure is formed between the inner wall of the containing chamber and the outer wall of the extension part and is used for preventing external substances from entering the containing chamber through a gap between the inner wall of the containing chamber and the outer wall of the extension part.

In a first example provided by the embodiment of the present invention, please refer to fig. 10, the blocking structure includes a first blocking piece 1002 extending from an inner wall of the receiving chamber 1001, specifically, the first blocking piece 1002 may extend from an inner side wall of the receiving chamber 1001, and in the lock closed state, the first blocking piece 1002 is located between the inner wall of the receiving chamber 1001 and an outer wall of the extending portion 1003. The first blocking plate 1002 may include a first free end which may be in close contact with an outer wall of the extension 1003 in the lock-closed state such that foreign substances cannot smoothly enter the inside of the receiving chamber, and the first blocking plate 1001 is shown in fig. 10 as a regular planar plate structure, but it should be understood that in other embodiments, the first blocking plate may also be a plate structure having a bent structure such that it may further extend the time necessary for foreign substances to violently enter the inside of the receiving chamber.

For all-round security purposes, the first blocking tab may surround a circumference of the inner side wall of the receiving chamber, in particular, the first blocking tab may be a closed circular ring, but of course, the first blocking tab may also be an unsealed circular ring, in which case there are a plurality of separate first blocking tab structures in the security lock, which are interrupted around a circumference of the inner side wall of the receiving chamber.

In the first example provided by the embodiment of the invention, the interior of the accommodating chamber is protected by the first barrier sheet extending from the inner wall of the accommodating chamber, and due to the obstruction of the first barrier sheet, the time for foreign matters to enter the interior of the accommodating chamber through violence is prolonged, so that the anti-theft capacity of the anti-theft lock is improved.

In a second example provided by the embodiment of the present invention, please refer to fig. 11, the blocking structure includes a third blocking sheet 1102 extending from an outer wall of the extension portion 1101, specifically, the third blocking sheet 1102 may extend from an outer wall of the extension portion 1101, and in the lock-closed state, the third blocking sheet 1102 is located between an inner wall of the receiving chamber and the outer wall of the extension portion. The third blocking piece may include a third free end which may be in close contact with the inner wall of the receiving chamber 1103 in the lock-closed state, so that foreign substances cannot smoothly enter the receiving chamber, and the third blocking piece is shown in fig. 11 as a regular planar sheet structure.

In the second example provided by the embodiment of the invention, the interior of the accommodating chamber is protected by the third barrier sheet extending from the outer side wall of the extending part, and due to the obstruction of the third barrier sheet, the time for foreign matters to enter the interior of the accommodating chamber through violence is prolonged, so that the anti-theft capacity of the anti-theft lock is improved. For all-round theft protection, the third stop tab may surround a circumference of the outer side wall of the extension, i.e. in the closed state of the lock, the third stop tab may surround a circumference of the inner side wall of the receiving chamber, in particular, the third stop tab may be a closed circular ring, or of course, the third stop tab may also be an open circular ring, in which case there are a plurality of independent third stop tab structures in the theft protection lock, which stop tab structures are interrupted around a circumference of the outer side wall of the extension.

In a third example provided by the embodiment of the present invention, please refer to fig. 12, the blocking structure includes a first blocking sheet 1202 extending from an inner sidewall of the accommodating chamber 1201 and a second blocking sheet 1203 extending from an outer sidewall of the extending portion, in the locked and closed state, the second blocking sheet 1203 is located above the first blocking sheet 1202, and both the first blocking sheet 1202 and the second blocking sheet 1203 are located between the inner sidewall of the accommodating chamber 1201 and the outer sidewall of the extending portion 1204, in the locked and closed state, a first free end of the first blocking sheet 1202 is in close contact with the outer sidewall of the extending portion 1204, and a second free end of the second blocking sheet 1203 is in close contact with the inner sidewall of the accommodating chamber 1201, so that a double-layer blocking is formed, and foreign matter can be better prevented from entering the accommodating chamber. It should be noted that, in some embodiments, in the lock closed state, the first free end of the first blocking piece may not contact with the outer sidewall of the extension portion, and the second free end of the second blocking piece may not contact with the inner sidewall of the accommodating chamber, so that in the lock closed state, the first blocking piece and the second blocking piece form a staggered structure, which may achieve the effect of improving the anti-theft performance.

For all-round theft protection, the first blocking piece in this example may surround a circumference of the inner side wall of the receiving chamber and the second blocking piece may surround a circumference of the outer side wall of the extension, and specifically, the first blocking piece and the second blocking piece may be closed circular rings, but of course, the first blocking piece and the second blocking piece may also be open circular rings, in which case there are a plurality of independent first blocking piece structures and second blocking piece structures in the anti-theft lock, which blocking piece structures are interrupted by a circumference around the outer side wall of the extension.

It should be noted that in other embodiments, the multilayer barrier may also be formed by a multilayer barrier sheet extending from the inner wall of the receiving chamber, or by a multilayer barrier sheet extending from the outer sidewall of the extension.

According to the anti-theft lock provided by the embodiment of the invention, the blocking piece extends from the inner wall of the accommodating cavity and/or the blocking piece extends from the outer wall of the extending part to isolate the inside of the accommodating cavity, so that common non-violently invaded external materials cannot enter the accommodating cavity, the time required for the violently invaded external materials to enter the accommodating cavity is effectively prolonged, the anti-theft capacity of the lock is improved beyond the anti-theft time, and the integral anti-theft performance of the lock is improved.

The foregoing is a more detailed description of embodiments of the present invention, and the present invention is not to be considered limited to such descriptions. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.

Claims

1. An anti-theft lock comprising: the lock comprises an upper lock body and a lower lock body, wherein the upper lock body comprises an extension part, the lower lock body comprises an accommodating cavity used for being matched with the extension part to accommodate the upper lock body, and a blocking structure is formed between the inner wall of the accommodating cavity and the outer wall of the extension part in a lock closing state and is used for preventing foreign matters from entering the accommodating cavity.

2. The pickproof lock of claim 1, wherein the blocking structure is a sheet-like structure.

3. The pickproof lock of claim 2, wherein the blocking structure comprises a first blocking tab extending from an inner wall of the receiving chamber, the first blocking tab being positioned between the inner wall of the receiving chamber and an outer wall of the extension in the lock closed position.

4. The anti-theft lock according to claim 3, wherein said first blocking tab includes a first free end which is in close contact with an outer wall of said extension in the lock closed condition.

5. The pickproof lock of claim 3, wherein the blocking structure further comprises a second blocking tab extending from an outer wall of the extension, the second blocking tab being positioned above the first blocking tab and the second blocking tab being positioned between an inner wall of the receiving chamber and the outer wall of the extension in the lock closed position.

6. The anti-theft lock according to claim 5, wherein said second blocking tab comprises a second free end which, in the lock closed condition, is in close contact with the inner wall of said containment chamber.

7. The pickproof lock of claim 2, wherein the blocking structure is formed by a third blocking tab extending from an outer wall of the extension, the third blocking tab including a third free end that is in intimate contact with an inner wall of the receiving chamber in the lock closed condition.

8. The pickproof lock of claim 1, wherein the blocking structure is a table-body structure.

9. The pickproof lock of claim 8, wherein the interior wall of said receiving cavity has a raised stop formed thereon, said stop structure comprising said raised stop.

10. The anti-theft lock according to claim 9, wherein said upper lock body further comprises a raised engagement platform connected to a bottom surface of said extension portion end, said blocking structure further comprises said raised engagement platform, an engagement surface of said raised engagement platform matches a blocking surface of said raised blocking platform, said engagement surface and said blocking surface being in intimate contact in the lock closed state.

11. The pickproof lock of claim 10, wherein the raised stop is a stepped platform, or a wavy platform, or a serrated platform.

12. The pickproof lock of any of claims 1-11, wherein the blocking structure surrounds a perimeter of an inner side wall of the receiving chamber.