Anti-theft device and cabinet

Abstract

The present invention belongs to the technical field of outdoor cabinets, and particularly relates to an anti-theft device and a cabinet. The anti-theft device comprises a door lock; the door lock comprises a linkage, an upper locking rod, a lower locking rod, an upper anti-theft limiting assembly and a lower anti-theft limiting assembly; the linkage is rotatably connected to the upper locking rod and the lower locking rod; the linkage is provided with a main lock tongue located between the upper locking rod and the lower locking rod; the upper anti-theft limiting assembly comprises an upper stopper and an upper rotating limiting rod connected to the upper locking rod and driven to rotate by the upper locking rod; the lower anti-theft limiting assembly comprises a lower stopper and a lower rotating limiting rod connected to the lower locking rod and driven to rotate by the lower locking rod. When locking the door panel and the door frame, the present invention can also ensure that the door lock will not be pried open from the upper and lower directions, thereby enhancing the anti-theft performance.

Description

Technical Field

[0001] The invention belongs to the technical field of outdoor cabinets, and in particular relates to an anti-theft device and a cabinet. Background Art

[0002] With the rapid development of mobile communications and the popularization of optical fiber communication equipment, outdoor communication rooms and outdoor communication base stations are increasingly widely used. Various valuable equipment such as communication equipment, base station equipment, batteries, power supply equipment, etc. in outdoor communication rooms and outdoor communication base stations are installed in cabinets. Since outdoor communication rooms or outdoor communication base stations work in open air environments, cabinets are prone to theft, so the cabinet doors of outdoor cabinets are all equipped with anti-theft structures.

[0003] In the prior art, outdoor cabinets use a three-point locking method. When the linkage mechanism position of the cabinet door panel is damaged by gravity or other factors (such as being pried), the linkage mechanism will fall off or the linkage mechanism position will change and lose its limiting function, causing the door panel to be opened and lose its anti-theft function, making the anti-theft performance of the outdoor cabinet anti-theft door poor. Summary of the invention

[0004] The invention solves the technical problems in the prior art such as poor anti-theft performance of an outdoor cabinet anti-theft door, and provides an anti-theft device and a cabinet.

[0005] In view of the above problems, an embodiment of the present invention provides an anti-theft device, including a door lock installed on a door panel;

[0006] The door lock comprises a linkage, an upper locking rod, a lower locking rod, an upper anti-theft limiting assembly and a lower anti-theft limiting assembly; the linkage is rotatably connected to the upper locking rod and the lower locking rod; the linkage is provided with a main lock tongue located between the upper locking rod and the lower locking rod;

[0007] The upper anti-theft limiting assembly includes an upper stopper and an upper rotation limiting rod connected to the upper locking rod and driven to rotate by the upper locking rod; the lower anti-theft limiting assembly includes a lower stopper and a lower rotation limiting rod connected to the lower locking rod and driven to rotate by the lower locking rod;

[0008] When the linkage member rotates in the first direction, the main lock tongue is inserted into the middle door frame on the side, and the linkage member drives the upper rotation limit rod to rotate to the upper door frame on the insertion side through the upper locking rod and abut against the upper stopper; at the same time, the linkage member drives the lower rotation limit rod to rotate to the lower door frame on the insertion side through the lower locking rod and abut against the lower stopper;

[0009] When the linkage rotates in the second direction, the main lock tongue disengages from the side middle door frame, and the linkage drives the upper rotation limit rod to rotate and separate from the side upper door frame through the upper locking rod; at the same time, the linkage drives the lower rotation limit rod to rotate and separate from the side lower door frame through the lower locking rod; the first direction and the second direction are opposite.

[0010] Optionally, the upper anti-theft limit assembly comprises an upper anti-theft seat installed on the door panel and having an upper rotating shaft; the upper stopper is an upper limit slot arranged on the upper anti-theft seat, and the upper rotation limit rod is provided with an upper limit block inserted into the upper limit slot and sliding along the upper limit slot; the upper limit slot comprises a first upper slot edge and a second upper slot edge respectively arranged at two ends; when the upper rotation limit rod rotates around the upper rotating shaft, the sliding track of the upper limit block in the upper limit slot is a circular arc track coaxial with the upper rotating shaft;

[0011] When the linkage member rotates in the first direction, the locking rod drives the upper rotation limiting rod to slide along the upper limit groove until it is inserted into the side upper door frame and abuts against the edge of the first upper groove;

[0012] When the linkage member rotates in the second direction, the locking rod drives the upper rotation limiting rod to slide along the upper limit groove until it is separated from the side upper door frame and abuts against the edge of the second upper groove.

[0013] Optionally, a line between the first upper groove edge and the upper rotation axis is parallel to a horizontal plane.

[0014] Optionally, the upper anti-theft limit assembly further includes a first upper limit paddle and a second upper limit paddle both mounted on the upper locking rod; a first sliding space for accommodating the upper rotation limit rod is formed between the first upper limit paddle and the second upper limit paddle;

[0015] The locking rod pushes the upper rotation limiting rod to slide in the first sliding space through the first upper limit paddle and the second upper limit paddle, thereby driving the upper limit block to slide in the upper limit groove.

[0016] Optionally, the lower anti-theft limit assembly comprises a lower anti-theft seat mounted on the door panel and having a lower rotating shaft; the lower stopper is a lower limit groove arranged on the lower anti-theft seat, and the lower rotation limit rod is provided with a lower limit block inserted into the lower limit groove and sliding along the lower limit groove; the lower limit groove comprises a first lower groove edge and a second lower groove edge respectively arranged at two ends; when the lower rotation limit rod rotates around the lower rotating shaft, the sliding track of the lower limit block in the lower limit groove is a circular arc track coaxial with the lower rotating shaft;

[0017] When the linkage member rotates in the first direction, the lower locking rod drives the lower rotation limiting rod to rotate along the lower limiting groove until it is inserted into the side lower door frame and abuts against the second lower groove edge;

[0018] When the linkage member rotates in the second direction, the lower locking rod drives the lower rotation limiting rod to rotate along the lower limiting groove until it is separated from the side lower door frame and abuts against the first lower groove edge.

[0019] Optionally, a line between the second lower groove edge and the lower rotation axis is parallel to a horizontal plane.

[0020] Optionally, the lower anti-theft limiter assembly further includes a first lower limiter paddle and a second lower limiter paddle both mounted on the lower locking rod; a second sliding space for accommodating the lower rotation limiter rod is formed between the first lower limiter paddle and the second lower limiter paddle;

[0021] The lower locking rod pushes the lower rotation limiting rod to slide in the second sliding space through the first lower limiting paddle and the second lower limiting paddle, thereby driving the lower limiting block to slide in the lower limiting groove.

[0022] Optionally, the door lock further comprises an upper fixed guide and a lower fixed guide both mounted on the door panel; the anti-theft device further comprises an upper locking pin rotatably connected to the upper locking rod and passing through the upper fixed guide, and a lower locking pin rotatably connected to the lower locking rod and passing through the lower fixed guide;

[0023] When the linkage member rotates in the first direction, the linkage member drives the upper lock pin through the upper lock rod along the upper fixed guide member to extend out of the upper edge of the door panel and insert into the upper door frame, and at the same time, the linkage member drives the lower lock pin through the lower lock rod along the lower fixed guide member to extend out of the lower edge of the door panel and insert into the lower door frame;

[0024] When the linkage rotates in the second direction, the linkage drives the upper locking pin through the upper locking rod to separate from the upper door frame and retract to the door panel along the upper fixed guide. At the same time, the linkage drives the lower locking pin through the lower locking rod to separate from the lower door frame and retract to the door panel along the lower fixed guide.

[0025] Optionally, the door lock further comprises an upper roller connected to an end of the upper locking pin away from the upper locking rod, and a lower roller connected to an end of the lower locking pin away from the lower locking rod.

[0026] In the present invention, when the linkage rotates in the first direction (i.e., locks the door panel), the main lock tongue will be inserted into the side middle door frame, i.e., the door panel will be locked from the middle of the side door frame (i.e., the side middle door frame). And the linkage can drive the upper locking rod and the lower locking rod to move up and down. During the upward movement of the upper locking rod, the upper rotation limit rod can be driven to rotate to insert into the side lower door frame and abut against the upper stopper; during the downward movement of the lower rotation limit rod, the lower rotation limit rod can be driven to rotate to insert into the side lower door frame and abut against the lower stopper; the upper rotation limit rod is inserted into the side upper door frame, and the lower rotation limit rod is inserted into the side lower door frame, so that the upper anti-theft limit assembly and the lower anti-theft limit assembly are equivalent to two independent door locks, which lock the door panel at the corresponding positions of the side upper door frame and the side lower door frame, so that the upper anti-theft limit assembly can be locked at the side upper door frame. The upper anti-theft limiter assembly locks the door panel at the upper, lower and middle positions, which enhances the anti-theft performance of the anti-theft device; at the same time, the upper rotation limiter abuts against the upper stopper, and the lower rotation limiter abuts against the lower stopper, that is, the door lock is fixed in the upper and lower directions by the upper locking rod and the lower locking rod. When the thief knocks the door lock by gravity or the like, the upper anti-theft limiter assembly provides downward resistance to the door lock (when knocking the main lock tongue upward), and the lower anti-theft limiter assembly provides upward resistance to the door lock (when knocking the main lock tongue downward), thereby ensuring that the door lock will not be pried open from the upper and lower directions, thereby further enhancing the anti-theft performance of the anti-theft device. In addition, according to actual anti-theft needs, the number of the upper anti-theft limiter assembly and the lower anti-theft limiter assembly can be increased according to needs. As the number of the upper anti-theft limiter assembly and the lower anti-theft limiter assembly increases, the anti-theft performance of the anti-theft device is enhanced.

[0027] The present invention also provides a cabinet, comprising a door panel, a door frame and the anti-theft device. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0029] Figure 1 A schematic diagram of the structure of an anti-theft device in an unlocked state provided by an embodiment of the present invention;

[0030] Figure 2 for Figure 1 A schematic diagram of the enlarged structure of part A shown in FIG.

[0031] Figure 3 A schematic diagram of the structure of an anti-theft device provided by an embodiment of the present invention in a locked state;

[0032] Figure 4 for Figure 2 The enlarged structural diagram of part B shown in FIG.

[0033] Figure 5 for Figure 2 The enlarged structural diagram of the C part shown in FIG.

[0034] Figure 6 A schematic diagram of the three-dimensional structure of an anti-theft device in a locked state provided by an embodiment of the present invention;

[0035] Figure 7 A schematic diagram of the three-dimensional structure of an anti-theft device provided by an embodiment of the present invention in an unlocked state;

[0036] Figure 8 A schematic structural diagram of a lower anti-theft limiting assembly of an anti-theft device in a locked state provided by an embodiment of the present invention;

[0037] Fig. 9 A schematic structural diagram of a lower anti-theft limiting assembly of an anti-theft device in an unlocked state provided by an embodiment of the present invention;

[0038] Fig.10 A schematic diagram of a partial structure of an anti-theft device provided by an embodiment of the present invention in an unlocked state;

[0039] Fig.11 A schematic diagram of a partial three-dimensional structure of an anti-theft device provided by an embodiment of the present invention in a locked state;

[0040] Fig.12 A schematic diagram of a partial three-dimensional structure of an anti-theft device provided by an embodiment of the present invention in a locked state;

[0041] Fig.13 A schematic diagram of a partial three-dimensional structure of an anti-theft device provided by an embodiment of the present invention in an unlocked state.

[0042] The reference numerals in the specification are as follows:

[0043] 1. Door lock; 11. Linkage; 12. Upper locking rod; 13. Lower locking rod; 14. Upper anti-theft limit assembly; 141. Upper stopper; 142. Upper rotation limit rod; 1421. Upper limit block; 143. Upper anti-theft seat; 1432. Upper limit slot; 14321. First upper slot edge; 14322. Second upper slot edge; 144. First upper limit paddle; 145. Second upper limit paddle; 15. Lower anti-theft limit assembly; 151. Lower stopper; 152. Lower rotation limit rod; 1521. Lower limit block; 153. Lower anti-theft seat; 1531. Lower rotating shaft; 1532. Lower limit slot; 15321. First lower slot edge; 15322. Second lower slot edge; 154. First lower limit paddle; 155. Second lower limit paddle; 16. Main lock tongue; 17. Upper fixed guide; 18. Lower fixed guide; 19. Upper locking pin; 100. Lower locking pin; 101. Upper roller; 102. Lower roller; 2. Door panel; 21. Upper edge; 22. Lower edge; 3. Door frame; 31. Side upper door frame; 32. Side lower door frame; 33. Side middle door frame; 34. Upper door frame; 35. Lower door frame. DETAILED DESCRIPTION

[0044] In order to make the technical problems, technical solutions and beneficial effects solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0045] It should be understood that the directions or positional relationships indicated by terms such as "upper", "lower", "left", "right", "front", "back", and "middle" are based on the directions or positional relationships shown in the accompanying drawings and are only used to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation of the present invention.

[0046] In order to better explain the structure and installation relationship of the anti-theft device, the "upper", "middle", "lower" and "side" in the present invention are the corresponding orientation relationships when the actual door panel is installed, and "upper" refers to the upper side of the actual orientation (that is, Figure 1 The middle refers to the actual position (i.e. the upper part of the anti-theft device shown in Figure 1 The middle of the anti-theft device shown in the figure), "down" means the actual position of the lower part (that is, Figure 1 The "side" refers to the direction of the door panel closer to the door frame (i.e. Figure 1 to the left of the anti-theft device shown in ).

[0047] like Figures 1 to 7 As shown, an anti-theft device provided by an embodiment of the present invention includes a door lock 1 installed (installed by screw connection or the like) on a door panel 2;

[0048] The door lock 1 includes a linkage 11, an upper locking rod 12, a lower locking rod 13, an upper anti-theft limiting assembly 14 and a lower anti-theft limiting assembly 15; the linkage 11 is rotatably connected to the upper locking rod 12 and the lower locking rod 13; the linkage 11 is provided with a main lock tongue 16 located between the upper locking rod 12 and the lower locking rod 13 (the main lock tongue 16 can be integrally formed with the linkage 11, or can be a structural member installed on the linkage 11 by welding, screw connection, etc.); it can be understood that the upper locking rod 12, the lower locking rod 13, the linkage 11, the upper anti-theft limiting assembly 14 and the lower anti-theft limiting assembly 15 can all be installed inside the door panel 2 (only when in the locked state, part of it extends out of the door panel 2 and is inserted into the door frame 3) to better protect it.

[0049] The upper anti-theft limiting assembly 14 includes an upper stopper 141 and an upper rotation limiting rod 142 connected to the upper locking rod 12 and driven to rotate by the upper locking rod 12; the lower anti-theft limiting assembly 15 includes a lower stopper 151 and a lower rotation limiting rod 152 connected to the lower locking rod 13 and driven to rotate by the lower locking rod 13;

[0050] When the linkage 11 rotates in the first direction (i.e., locks the door panel 2), the main lock tongue 16 is inserted into the side middle door frame 33, and the linkage 11 drives the upper rotation limit rod 142 to rotate to the upper door frame 31 on the insertion side and abuts against the upper stop 141 through the upper locking rod 12; at the same time, the linkage 11 drives the lower rotation limit rod 152 to rotate to the lower door frame 32 on the insertion side and abuts against the lower stop 151 through the lower locking rod 13; it can be understood that the first direction in this embodiment is the direction in which the linkage 11 rotates clockwise around its center axis, and can also be the direction in which the linkage 11 rotates counterclockwise around its center axis. Specifically, when the linkage 11 rotates in the first direction, the upper locking rod 12 moves upward, and in the process of the upper locking rod 12 moving upward, the upper rotation limit rod 142 is driven to rotate around its upper rotation axis, so that the part of the upper rotation limit rod 142 extending out of the outer side of the door panel 2 is inserted into the side upper door frame 31 (at this time, this part is equivalent to an independent door lock 1, and the upper rotation limit rod 142 is equivalent to a secondary lock tongue), and the upper rotation limit rod 142 abuts against the upper stopper after rotation; at the same time, the linkage 11 drives the lower locking rod 13 to move downward, and in the process of the lower locking rod 13 moving downward, the lower rotation limit rod 152 is driven to rotate around its lower rotation axis 1531, and the part of the lower rotation limit rod 152 extending out of the outer side of the door panel 2 is inserted into the side lower door frame 32 (at this time, this part is equivalent to an independent door lock 1, and the lower rotation limit rod 152 is equivalent to another secondary lock tongue), and the lower rotation limit rod 152 abuts against the lower stopper 151.

[0051] When the linkage member 11 rotates in the second direction (i.e., unlocks the door panel 2), the main lock tongue 16 is separated from the side middle door frame 33, and the linkage member 11 drives the upper rotation limit rod 142 to rotate and separate from the side upper door frame 31 through the upper locking rod 12; at the same time, the linkage member 11 drives the lower rotation limit rod 152 to rotate and separate from the side lower door frame 32 through the lower locking rod 13; the first direction and the second direction are opposite. It can be understood that when the first rotation direction is the clockwise rotation of the linkage member 11 around its central axis, the second rotation direction is the counterclockwise rotation of the linkage member 11 around its central axis. Specifically, when the linkage 11 rotates in the second direction, the upper locking rod 12 moves downward. During the downward movement of the upper locking rod 12, the upper rotation limit rod 142 is driven to rotate around its upper rotation axis, and the upper rotation limit rod 142 will retreat to the door panel 2, and the upper rotation limit rod 142 will be separated from the upper stopper after rotation; at the same time, the lower locking rod 13 moves downward. During the downward movement of the lower locking rod 13, the lower rotation limit rod 152 will be driven to rotate around its lower rotation axis 1531, and the lower rotation limit rod 152 will retreat to the door panel 2, and the lower rotation limit rod 152 will be separated from the lower stopper 151.

[0052] In the present invention, when the linkage member 11 rotates in the first direction (i.e., locks the door panel 2), the main lock tongue 16 will be inserted into the side middle door frame 33, i.e., the door panel 2 will be locked from the middle of the side door frame (i.e., the side middle door frame 33). And the linkage member 11 can drive the upper locking rod 12 and the lower locking rod 13 to move up and down. During the upward movement of the upper locking rod 12, the upper rotation limit rod 142 can be driven to rotate to insert into the side lower door frame 32 and abut against the upper stopper; during the downward movement of the lower rotation limit rod 152, the lower rotation limit rod 152 can be driven to rotate to insert into the side lower door frame 32 and abut against the lower stopper 151; the upper rotation limit rod 142 is inserted into the side upper door frame 31, and the lower rotation limit rod 152 is inserted into the side lower door frame 32, so that the upper anti-theft limit assembly 14 and the lower anti-theft limit assembly 15 are equivalent to two independent door locks, which lock the door panel 2 at the positions corresponding to the side upper door frame 31 and the side lower door frame 32, so that The door panel 2 is locked at the upper side, lower side and middle side of the side door frame, thereby enhancing the anti-theft performance of the anti-theft device; at the same time, the upper rotation limit rod 142 abuts against the upper stopper, and the lower rotation limit rod 152 abuts against the lower stopper, that is, the door lock 1 is fixed in the upper and lower directions by the upper locking rod 12 and the lower locking rod 13. When a thief strikes the door lock 1 by gravity or the like, the upper anti-theft limit assembly 14 provides downward resistance to the door lock 1 (when striking the main lock tongue 16 upward), and the lower anti-theft limit assembly 15 provides upward resistance to the door lock 1 (when striking the main lock tongue 16 downward), thereby ensuring that the door lock 1 will not be pried open from the upper and lower directions, thereby further enhancing the anti-theft performance of the anti-theft device. In addition, according to actual anti-theft needs, the number of the upper anti-theft limit assembly 14 and the lower anti-theft limit assembly 15 can be increased according to actual needs. As the number of the upper anti-theft limit assembly 14 and the lower anti-theft limit assembly 15 increases, the anti-theft performance of the anti-theft device is enhanced.

[0053] In one embodiment, if Figures 12 to 13 as well as Fig.10As shown, the upper anti-theft limit assembly 14 includes an upper anti-theft seat 143 installed on the door panel 2 (installed by screw connection, welding, etc.) and having an upper rotating axis; the upper stopper 141 is an upper limit slot 1432 arranged on the upper anti-theft seat 143, and the upper rotation limit rod 142 is provided with an upper limit block 1421 inserted into the upper limit slot 1432 and sliding along the upper limit slot 1432; the upper limit slot 1432 includes a first upper slot edge 14321 and a second upper slot edge 14322 respectively arranged at both ends; when the upper rotation limit rod 142 rotates around the upper rotating axis, the sliding trajectory of the upper limit block 1421 in the upper limit slot 1432 is a circular arc trajectory coaxial with the upper rotating axis; that is, the upper limit slot 1432 is an arc groove overlapping with the circular arc trajectory of the sliding of the upper limit block 1421. It can be understood that the length of the upper limit slot 1432 determines the rotation range of the upper rotation limit rod 142 along the upper rotation axis.

[0054] When the linkage member 11 rotates in the first direction (i.e., locks the door panel 2), the locking rod 12 drives the upper rotation limit rod 142 to slide along the upper limit groove 1432 until it is inserted into the side door frame 31 and abuts against the upper first upper groove edge 14321; it can be understood that when the door panel 2 is locked, the upper rotation limit rod 142 abuts against the upper first upper groove edge 14321, so that the upper first upper groove edge 14321 prevents the upper locking rod 12 from moving upward, that is, when a thief pries the door lock 1 upward, since the upper first upper groove edge 14321 prevents the upper locking rod 12 from moving upward, it is not easy for the thief to pry open the door lock 1 upward.

[0055] When the linkage member 11 rotates in the second direction (i.e., unlocks the door panel 2), the locking rod 12 drives the upper rotation limiting rod 142 to slide along the upper limit groove 1432 until it is separated from the side upper door frame 31 and abuts against the second upper groove edge 14322. It can be understood that when the upper rotation limiting rod 142 abuts against the second upper groove edge 14322, the upper rotation limiting rod 142 retracts to the door panel 2, and the door opening action can be achieved. When unlocking the door panel 2, the upper rotation limiting rod 142 may or may not abut against the second upper groove edge 14322, as long as the upper rotation limiting rod 142 is separated from the door frame 3 and retracted to the door panel 2.

[0056] It can be understood that the upper stopper 141 can also be other structural parts that limit and block the upper rotation limit rod 142, for example, the upper stopper can also be two upper blocks arranged on the upper anti-theft seat 143. Through the design of the upper limit groove 1432, the upper anti-theft limit assembly 14 can play the function of opening and closing the door, and the first upper groove edge 14321 of the upper limit groove 1432 prevents the upper locking rod 12 from moving upward through the upper rotation limit rod 142, so that it is not easy for thieves to pry open the door lock 1 upward, and the anti-theft performance of the anti-theft device is also enhanced; in addition, the upper anti-theft limit assembly 14 has a simple structure and is easy to install, which reduces the manufacturing cost of the anti-theft device.

[0057] In one embodiment, if Figure 1 and Figure 3 As shown, the line between the upper first groove edge 14321 and the upper rotation axis is parallel to the horizontal plane. It can be understood that when the door panel 2 is locked, the upper rotation limit rod 142 abuts against the upper first groove edge 14321. At this time, the upper rotation limit rod 142 is parallel to the horizontal plane. When the upper rotation limit rod 142 is in a horizontal state, the upper rotation limit rod 142 is evenly stressed and not easily damaged, which further enhances the anti-theft performance of the anti-theft device and prolongs the service life of the anti-theft device. The line between the upper first groove edge 14321 and the upper rotation axis may not be parallel to the horizontal plane. It is only necessary that when the upper rotation limit rod 142 abuts against the upper first groove edge 14321, the upper rotation limit rod 142 can be inserted into the side upper door frame 31.

[0058] As a preference, Figure 1 As shown, the line between the second upper groove edge 14322 and the upper rotation axis is perpendicular to the horizontal plane. It can be understood that when the door panel 2 is unlocked, the upper rotation limit rod 142 abuts against the second upper groove edge 14322, so that the upper rotation limit rod 142 is in a state perpendicular to the horizontal plane, that is, the upper rotation limit rod 142 retracts to the door panel 2. The line between the second upper groove edge 14322 and the upper rotation axis may not be perpendicular to the horizontal plane, as long as the upper rotation limit rod 142 abuts against the second upper groove edge 14322, the upper rotation limit rod 142 retracts to the door panel 2.

[0059] In one embodiment, if Figures 12 to 13 as well as Fig.10As shown, the upper anti-theft limit assembly 14 also includes a first upper limit paddle 144 and a second upper limit paddle 145 both mounted on the locking rod 12 (mounted by screw connection, welding, etc.); a first sliding space for accommodating the upper rotation limit rod 142 is formed between the first upper limit paddle 144 and the second upper limit paddle 145; it can be understood that when the linkage member 11 rotates in the first direction (i.e., locks the door panel 2), the locking rod 12 drives the first upper limit paddle 144 and the second upper limit paddle 145 to move upward. The second upper limit paddle 145 abuts against the upper rotation limit rod 142, and the upper rotation limit rod 142 abuts against the first upper groove edge 14321. Therefore, when the thief pries the door lock 1 upward, since the upper rotation limit rod 142 abuts against the first upper groove edge 14321, the upper rotation limit rod 142 can no longer rotate upward, thereby preventing the upper locking rod 12 from moving upward through the second upper limit paddle 145, thereby fixing the door lock 1 in the vertical upward direction, thereby enhancing the anti-theft performance of the anti-theft device.

[0060] The locking rod 12 pushes the upper rotation limiting rod 142 to slide in the first sliding space through the first upper limit paddle 144 and the second upper limit paddle 145, thereby driving the upper limit block 1421 to slide in the upper limit groove 1432. It can be understood that in the process of the locking rod 12 moving up and down, the first upper limit paddle 144 and the second upper limit paddle 145 move up and down, and the first sliding space between the first upper limit paddle 144 and the second upper limit paddle 145 clamps the upper rotation limiting rod 142 to rotate around its upper rotation axis, thereby realizing the locking function of the upper anti-theft limiting assembly 14 on the door panel 2.

[0061] In one embodiment, if Figure 8 and Fig. 9As shown, the lower anti-theft limiting assembly 15 includes a lower anti-theft seat 153 installed on the door panel 2 (installed by screw connection, welding, etc.) and having a lower rotating shaft 1531; the lower stopper 151 is a lower limiting groove 1532 arranged on the lower anti-theft seat 153, and the lower rotating limiting rod 152 is provided with a lower limiting block 1521 inserted into the lower limiting groove 1532 and sliding along the lower limiting groove 1532; the lower limiting groove 1532 includes a first lower groove edge 15321 and a second lower groove edge 15322 respectively arranged at two ends; when the lower rotating limiting rod 152 rotates around the lower rotating shaft 1531, the sliding trajectory of the lower limiting block 1521 in the lower limiting groove 1532 is a circular arc trajectory coaxial with the lower rotating shaft 1531; that is, the lower limiting groove 1532 is an arc groove overlapping with the circular arc trajectory of the sliding of the lower limiting block 1521. It can be understood that the length of the lower limiting groove 1532 determines the rotation range of the upper rotation limiting rod 142 along the upper rotation axis.

[0062] When the linkage member 11 rotates in the first direction (i.e., locks the door panel 2), the lower locking rod 13 drives the lower rotation limit rod 152 to rotate along the lower limit groove 1532 until it is inserted into the side lower door frame 35 and abuts against the second lower groove edge 15322; it can be understood that when the door panel 2 is locked, the lower rotation limit rod 152 abuts against the second lower groove edge 15322, so that the second lower groove edge 15322 prevents the upper locking rod 12 from moving downward, that is, when a thief pries the door lock 1 downward, it is not easy for the thief to pry open the door lock 1 downward because the second lower groove edge 15322 prevents the lower locking rod 13 from moving downward.

[0063] When the linkage member 11 rotates in the second direction (i.e., unlocks the door panel 2), the lower locking rod 13 drives the lower rotation limiting rod 152 to rotate along the lower limiting groove 1532 until it is separated from the side lower door frame 35 and abuts against the first lower groove edge 15321. It can be understood that when the lower rotation limiting rod 152 abuts against the first lower groove edge 15321, the lower rotation limiting rod 152 retracts to the door panel 2, and the door opening action can be achieved. When unlocking the door panel 2, the lower rotation limiting rod 152 may abut against the first lower groove edge 15321, or may not abut against the lower groove edge, as long as the lower rotation limiting rod 152 is separated from the door frame 3 and retracted to the door panel 2.

[0064] It can be understood that the lower stopper can also be other structural parts that limit and block the lower rotation limit rod 152, for example, the lower stopper can also be two lower stoppers arranged on the lower anti-theft seat 153. Through the design of the lower limit groove 1532, the lower anti-theft limit assembly 15 can play the function of opening and closing the door, and the second lower groove edge 15322 of the lower limit groove 1532 prevents the lower lock rod 13 from moving downward through the lower rotation limit rod 152, so that it is not easy for thieves to pry open the door lock 1 downward. Combined with the upper anti-theft limit assembly 14 mentioned above, it can prevent thieves from prying open the door lock 1 upward, thereby fixing the door lock 1 in the vertical direction and enhancing the anti-theft performance of the anti-theft device; in addition, the lower anti-theft limit assembly 15 has a simple structure and is easy to install, which reduces the manufacturing cost of the anti-theft device.

[0065] In one embodiment, if Figure 1 and Figure 2 As shown, the line between the second lower groove edge 15322 and the lower rotation axis 1531 is parallel to the horizontal plane. It can be understood that when the door panel 2 is locked, the lower rotation limit rod 152 abuts against the second lower groove edge 15322. At this time, the lower rotation limit rod 152 is parallel to the horizontal plane. When the lower rotation limit rod 152 is in a horizontal state, the lower rotation limit rod 152 is evenly stressed and not easily damaged, which further enhances the anti-theft performance of the anti-theft device and prolongs the service life of the anti-theft device. The line between the second lower groove edge 15322 and the lower rotation axis 1531 may not be parallel to the horizontal plane. It is sufficient that the lower rotation limit rod 152 can be inserted into the side lower door frame 32 when the lower rotation limit rod 152 abuts against the second lower groove edge 15322.

[0066] Preferably, the line between the first lower groove edge 15321 and the lower rotation axis 1531 is perpendicular to the horizontal plane. It can be understood that when the door panel 2 is unlocked, the lower rotation limit rod 152 abuts against the first lower groove edge 15321, so that the lower rotation limit rod 152 is in a state perpendicular to the horizontal plane, that is, the lower rotation limit rod 152 is retracted to the door panel 2. The line between the first lower groove edge 15321 and the lower rotation axis 1531 may not be perpendicular to the horizontal plane, as long as the lower rotation limit rod 152 abuts against the first lower groove edge 15321, the lower rotation limit rod 152 is retracted to the door panel 2.

[0067] In one embodiment, if Fig.11As shown, the lower anti-theft limiting assembly 15 also includes a first lower limiting paddle 154 and a second lower limiting paddle 155 both mounted on the lower locking rod 13 (mounted by screw connection, welding, etc.); a second sliding space for accommodating the lower rotation limiting rod 152 is formed between the first lower limiting paddle 154 and the second lower limiting paddle; it can be understood that when the linkage member 11 rotates in the first direction (i.e., locks the door panel 2), the lower locking rod 13 drives the first lower limiting paddle 154 and the second lower limiting paddle 155 to move downward, and the first lower limiting paddle 154 and the lower rotation limiting rod 152 are in a sliding relationship. The limit rod 152 is in contact with the second lower groove edge 15322, and the lower rotation limit rod 152 is in contact with the second lower groove edge 15322. Therefore, when the thief pries the door lock 1 upward, the lower rotation limit rod 152 cannot rotate downward because the lower rotation limit rod 152 is in contact with the second lower groove edge 15322, thereby preventing the lower lock rod 13 from moving downward through the first lower limit paddle 154, thereby fixing the door lock 1 in the vertical downward direction. Combined with the upper anti-theft limit assembly 14 mentioned above, it can prevent thieves from prying the door lock 1 upward, thereby enhancing the anti-theft performance of the anti-theft device. The lower lock rod 13 pushes the lower rotation limit rod 152 to slide in the second sliding space through the first lower limit paddle 154 and the second lower limit paddle 155, thereby driving the lower limit block 1521 to slide in the lower limit groove 1532. It can be understood that when the lower locking rod 13 moves up and down, it drives the first lower limit paddle 154 and the second lower limit paddle 155 to move up and down, and the second sliding space between the first lower limit paddle 154 and the second lower limit paddle 155 will clamp the lower rotation limit rod 152 to rotate around its lower rotation axis 1531, thereby realizing the locking function of the lower anti-theft limit assembly 15 on the door panel 2.

[0068] In one embodiment, if Figures 3 to 5 As shown, the door lock 1 also includes an upper fixed guide 17 and a lower fixed guide 18 both installed (installed by screw connection, welding, etc.) on the door panel 2; the anti-theft device also includes an upper lock pin 19 rotatably connected to the upper lock rod 12 and passing through the upper fixed guide 17, and a lower lock pin 100 rotatably connected to the lower lock rod 13 and passing through the lower fixed guide 18; it can be understood that the upper fixed guide 17 causes the upper lock pin 19 to be displaced only in the up and down directions of the door panel (i.e., a guiding effect); the lower fixed guide 18 causes the lower lock pin 100 to be displaced only in the up and down directions of the door panel (i.e., a guiding effect); the provision of the upper fixed guide 17 and the lower fixed guide 18 enhances the strength of the anti-theft device and prolongs the service life of the anti-theft device.

[0069] When the linkage 11 rotates in the first direction (i.e., locking the door panel 2), the linkage 11 drives the upper locking pin 19 through the upper locking rod 12 to extend out of the upper edge 21 of the door panel 2 along the upper fixed guide 17 and insert into the upper door frame 34. At the same time, the linkage 11 drives the lower locking pin 100 through the lower locking rod 13 to extend out of the lower edge 22 of the door panel 2 along the lower fixed guide 18 and insert into the lower door frame 35. It can be understood that when the upper locking pin 19 extends out of the upper edge 21 of the door panel 2 and inserts into the upper door frame 34, the upper door frame 34 is locked; when the lower locking pin 100 extends out of the lower edge 22 of the door panel 2 and inserts into the lower door frame 35, the lower door frame 35 is locked.

[0070] When the linkage member 11 rotates in the second direction (i.e., unlocking the door panel 2), the linkage member 11 drives the upper lock pin 19 along the upper fixed guide member 17 to disengage from the upper door frame 34 and retract to the door panel 2 through the upper lock rod 12, and at the same time, the linkage member 11 drives the lower lock pin 100 along the lower fixed guide member 18 to disengage from the lower door frame 35 and retract to the door panel 2 through the lower lock rod 13. It can be understood that when unlocking the door panel 2, the upper lock rod 12 moves downward, thereby driving the upper lock pin 19 to move downward and retract to the door panel 2; at the same time, the lower lock rod 13 moves upward, thereby driving the lower lock pin 100 to move upward and retract to the door panel 2, thereby realizing the unlocking function.

[0071] In summary, the anti-theft device locks the door panel 2 at the upper part (the upper door frame position corresponding to the upper locking pin 19), the lower part (the lower door frame 35 position corresponding to the lower locking pin 100), the upper side (the upper door frame 31 position corresponding to the upper anti-theft limiting assembly 14), the lower side (the lower door frame 32 position corresponding to the lower anti-theft limiting assembly 15) and the middle part (the side middle door frame 33 position corresponding to the main lock tongue 16) of the door panel 2, thereby enhancing the anti-theft performance of the anti-theft device.

[0072] In one embodiment, if Figure 4 and Figure 5 As shown, the door lock 1 further includes an upper roller 101 connected to one end of the upper locking pin 19 away from the upper locking rod 12, and a lower roller 102 connected to one end of the lower locking pin 100 away from the lower locking rod 13. It can be understood that the upper roller 101 can guide the upper locking pin 19 to be inserted into the upper door frame 34, and the lower roller 102 can guide the lower locking pin 100 to be inserted into the lower door frame 35, that is, the sliding friction between the upper locking pin 19 and the upper door frame 34 and between the lower locking pin 100 and the lower door frame 35 is converted into rolling friction, thereby extending the service life of the anti-theft device.

[0073] like Figure 1 to Figure 2The present invention further provides a cabinet, comprising a door panel 2, a door frame 3 and the anti-theft device. It can be understood that the door frame 3 comprises the upper door frame 31, the middle door frame 33, the lower door frame 32, the upper door frame 34 and the lower door frame 35.

[0074] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An anti-theft device, characterized in that: Includes door locks installed on door panels; The door lock comprises a linkage, an upper locking rod, a lower locking rod, an upper anti-theft limiting assembly and a lower anti-theft limiting assembly; the linkage is rotatably connected to the upper locking rod and the lower locking rod; the linkage is provided with a main lock tongue located between the upper locking rod and the lower locking rod; The upper anti-theft limiting assembly includes an upper stopper and an upper rotation limiting rod connected to the upper locking rod and driven to rotate by the upper locking rod; the lower anti-theft limiting assembly includes a lower stopper and a lower rotation limiting rod connected to the lower locking rod and driven to rotate by the lower locking rod; When the linkage member rotates in the first direction, the main lock tongue is inserted into the middle door frame on the side, and the linkage member drives the upper rotation limit rod to rotate to the upper door frame on the insertion side through the upper locking rod and abut against the upper stopper; at the same time, the linkage member drives the lower rotation limit rod to rotate to the lower door frame on the insertion side through the lower locking rod and abut against the lower stopper; When the linkage rotates in the second direction, the main lock tongue disengages from the side middle door frame, and the linkage drives the upper rotation limit rod to rotate and separate from the side upper door frame through the upper locking rod; at the same time, the linkage drives the lower rotation limit rod to rotate and separate from the side lower door frame through the lower locking rod; the first direction and the second direction are opposite.

2. The anti-theft device according to claim 1, characterized in that: The upper anti-theft limit assembly comprises an upper anti-theft seat installed on the door panel and having an upper rotating shaft; the upper stopper is an upper limit slot arranged on the upper anti-theft seat, and the upper rotation limit rod is provided with an upper limit block inserted into the upper limit slot and sliding along the upper limit slot; the upper limit slot comprises a first upper slot edge and a second upper slot edge respectively arranged at two ends; when the upper rotation limit rod rotates around the upper rotating shaft, the sliding track of the upper limit block in the upper limit slot is a circular arc track coaxial with the upper rotating shaft; When the linkage member rotates in the first direction, the locking rod drives the upper rotation limiting rod to slide along the upper limit groove until it is inserted into the side upper door frame and abuts against the edge of the first upper groove; When the linkage member rotates in the second direction, the locking rod drives the upper rotation limiting rod to slide along the upper limit groove until it is separated from the side upper door frame and abuts against the edge of the second upper groove.

3. The anti-theft device according to claim 2, characterized in that: A line between the first upper groove edge and the upper rotation axis is parallel to a horizontal plane.

4. The anti-theft device according to claim 2, characterized in that: The upper anti-theft limit assembly further includes a first upper limit paddle and a second upper limit paddle both mounted on the upper locking rod; a first sliding space for accommodating the upper rotation limit rod is formed between the first upper limit paddle and the second upper limit paddle; The locking rod pushes the upper rotation limiting rod to slide in the first sliding space through the first upper limit paddle and the second upper limit paddle, thereby driving the upper limit block to slide in the upper limit groove.

5. The anti-theft device according to claim 1, characterized in that: The lower anti-theft limit assembly comprises a lower anti-theft seat mounted on the door panel and having a lower rotating shaft; the lower stopper is a lower limit groove arranged on the lower anti-theft seat, and the lower rotation limit rod is provided with a lower limit block inserted into the lower limit groove and sliding along the lower limit groove; the lower limit groove comprises a first lower groove edge and a second lower groove edge respectively arranged at two ends; when the lower rotation limit rod rotates around the lower rotating shaft, the sliding track of the lower limit block in the lower limit groove is a circular arc track coaxial with the lower rotating shaft; When the linkage member rotates in the first direction, the lower locking rod drives the lower rotation limiting rod to rotate along the lower limiting groove until it is inserted into the side lower door frame and abuts against the second lower groove edge; When the linkage member rotates in the second direction, the lower locking rod drives the lower rotation limiting rod to rotate along the lower limiting groove until it is separated from the side lower door frame and abuts against the first lower groove edge.

6. The anti-theft device according to claim 5, characterized in that: A line between the second lower groove edge and the lower rotation axis is parallel to a horizontal plane.

7. The anti-theft device according to claim 5, characterized in that: The lower anti-theft limiter assembly further includes a first lower limiter paddle and a second lower limiter paddle both mounted on the lower locking rod; a second sliding space for accommodating the lower rotation limiter rod is formed between the first lower limiter paddle and the second lower limiter paddle; The lower locking rod pushes the lower rotation limiting rod to slide in the second sliding space through the first lower limiting paddle and the second lower limiting paddle, thereby driving the lower limiting block to slide in the lower limiting groove.

8. The anti-theft device according to claim 1, characterized in that: The door lock further includes an upper fixed guide and a lower fixed guide both mounted on the door panel; the anti-theft device further includes an upper locking pin rotatably connected to the upper locking rod and passing through the upper fixed guide, and a lower locking pin rotatably connected to the lower locking rod and passing through the lower fixed guide; When the linkage member rotates in the first direction, the linkage member drives the upper lock pin through the upper lock rod along the upper fixed guide member to extend out of the upper edge of the door panel and insert into the upper door frame, and at the same time, the linkage member drives the lower lock pin through the lower lock rod along the lower fixed guide member to extend out of the lower edge of the door panel and insert into the lower door frame; When the linkage rotates in the second direction, the linkage drives the upper locking pin through the upper locking rod to separate from the upper door frame and retract to the door panel along the upper fixed guide. At the same time, the linkage drives the lower locking pin through the lower locking rod to separate from the lower door frame and retract to the door panel along the lower fixed guide.

9. The anti-theft device according to claim 8, characterized in that: The door lock further comprises an upper roller connected to one end of the upper locking pin away from the upper locking rod, and a lower roller connected to one end of the lower locking pin away from the lower locking rod.

10. A cabinet, characterized in that: The invention comprises a door panel, a door frame and an anti-theft device as claimed in any one of claims 1 to 9.

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