Theft-proof combination lock

Abstract

A theft-proof combination lock that is permanently attached to a vehicle axle (10), characterized in that it comprises: a fastening section (100) that serves to encase the outer circumference of the vehicle axle (10) and is attached to the vehicle axle (10) by means of a screw connection (200); a connecting section (300) that has a first receiving groove (310) for receiving the lock body (410) of the combination lock (400), a second receiving groove (320) connected to the first receiving groove (310) for receiving the lock head (420) of the combination lock (400), and a third receiving groove (330) for receiving the screw connection (200);and a screw element (500) configured such that, after the fastening section (100) has been screwed on by means of the screw connection (200), it penetrates the connecting section (300) and is screwed to the screw connection (200), so that a fixed connection is established between the fastening section (100) and the connecting section (300). The connecting section (300) has at least one slot (340) which is connected to the second receiving groove (320), the slot (340) being arranged corresponding to the screw element (500), and the screw element (500) being able to be rotated clockwise or counterclockwise through the slot (340) to effect a screwing or disassembly between the screw element (500) and the screw connection (200).wherein the lock head (420) is located in a position between the slot (340) and the screw element (500) after its connection with the lock body (410).

Description

TECHNICAL AREA The present invention relates to the technical field of anti-theft devices, in particular a theft-proof combination lock. STATE OF THE ART Once a vehicle has been unlocked, a theft-proof combination lock is usually attached to the vehicle (e.g., the front fork or seat post of a bicycle) or placed in the basket, which can easily lead to its loss. For these reasons, there is an urgent need for a theft-proof combination lock that solves the problems mentioned above. CONTENT OF THE INVENTION The object of the present invention is to overcome the aforementioned shortcomings of the prior art and to provide a theft-proof code lock for mounting on the vehicle axle. The invention is realized by the following solution: A theft-proof combination lock that is permanently attached to a vehicle axle, comprising a mounting section and a connecting section connected by a screw element, wherein the mounting section surrounds the outer circumference of the vehicle axle and is attached to the vehicle axle by means of a screw connection; wherein the connecting section has a first receiving groove for receiving the lock body of the combination lock, a second receiving groove which is connected to the first receiving groove and serves to receive the lock head of the combination lock, and a third receiving groove for receiving the screw connection;wherein the screw element is designed such that, after the fastening section is screwed in by means of the screw connection, it passes through the connecting section and is screwed into the screw connection, thus creating a firm connection between the fastening section and the connecting section; wherein a slot is provided on the connecting section which is connected to the second receiving groove and is arranged according to the screw element, and wherein the screw element can be screwed into or detached from the screw connection by turning the screw element clockwise or counterclockwise; wherein, after the lock head is connected to the lock body, the lock head is located in a position between the slot and the screw element to prevent the screw element from rotating when the combination lock is closed and thus prevent loss of the combination lock. DETAILS OF THE DRAWINGS To better explain the technical solutions in the embodiments of the present invention, the accompanying drawings, which are to be used in the description of the embodiments, are briefly described below. It will be clear that the accompanying drawings in the following description represent only some embodiments of the present invention, and that other drawings in accordance with these drawings can be obtained by a person with ordinary expertise in the field without creative work. Fig. 1 shows a structural view of the tamper-proof combination lock according to one embodiment of the present invention, in which the lock head is mounted perpendicular to the lock body. Fig. 2 shows an exploded view of the tamper-proof combination lock according to one embodiment of the present invention.Figure 3 shows a structural view of the connecting plate of the anti-theft combination lock according to one embodiment of the present invention. Figure 4 shows a structural view of the other side surface of the connecting block of the anti-theft combination lock according to one embodiment of the present invention. Figure 5 shows a structural view of the anti-theft combination lock according to a further embodiment of the present invention, in which the lock head is mounted perpendicular to the lock body. The realization of the purpose, the functional features and the advantages of the present invention are further explained with reference to the accompanying drawings in conjunction with the embodiments. Reference symbol list: 100-fastening section, 110-first connection point, 120-second connection point, 130-bolt axle, 10-vehicle axle, 200-screw connection, 210-connecting block, 211-arc-shaped opening, 220-connecting axle, 230-screw block, 240-screw, 250-connecting opening; 300-connecting section, 310-first receiving groove, 320-second receiving groove, 330-third receiving groove, 340-slot, 350-countersunk hole; 400-combination lock, 410-lock body, 411-combination component, 420-lock head, 430-lock chain, 440-lock ring, 450-bolt bar; 500-screw element. SPECIFIC EXECUTION FORMS The following is a clear and complete description of the technical solutions in the embodiments of this invention in conjunction with the accompanying drawings in the embodiments of this invention. As shown in Fig. 1, Fig. 2, Fig. 3 to Fig. 4, a theft-proof combination lock provided according to an embodiment of the present invention, which serves for fixed mounting on the vehicle axle 10 of a vehicle, comprises the following: a fastening section 100, which serves to encase the outer circumference of the vehicle axle 10 and is fastened to the vehicle axle 10 by means of a screw connection 200;a connecting section 300, which has a first receiving groove 310 for receiving the lock body 410 of the code lock 400, a second receiving groove 320 connected to the first receiving groove 310 for receiving the lock head 420 of the code lock 400, and a third receiving groove 330 for receiving the screw connection 200. In this embodiment, the lower first receiving groove 310 is arranged vertically to the upper second receiving groove 320, and the third receiving groove 330 is arranged to the left of the second receiving groove 320, with both arranged horizontally to each other. a screw element 500, which is designed such that, after the fastening section 100 has been screwed in place by means of the screw connection 200, it penetrates the connecting section 300 and is screwed to the screw connection 200, so that a fixed connection is established between the fastening section 100 and the connecting section 300;wherein at least one slot 340 is provided on the connecting section 300, which is connected to the second receiving groove 320, wherein the slot 340 is arranged corresponding to the screw element 500 and the screw element 500 can be rotated clockwise or counterclockwise through the slot 340 to effect screwing or disassembly between the screw element 500 and the screw connection 200; wherein the lock head 420, after its connection with the lock body 410, is located between the slot 340 and the screw element 500 to prevent the screw element 500 from rotating when the code lock 400 is closed and thus prevent loss of the code lock 400. Preferably, the fastening section 100 comprises a first connection point 110 and a second connection point 120, which encircle the outer circumference of the vehicle axle 10, with one end of the first connection point 110 and the second connection point 120 being rotatably connected to each other. In this embodiment, the parts are rotatably connected by the bolt axis 130, while the other end of the first connection point 110 and the second connection point 120 is screwed together by means of the screw connection 200, thus making assembly simple and quick. Furthermore, the screw connection 200 comprises a connecting block 210, which is arranged between the other end of the first connection point 110 and the other end of the second connection point 120, wherein a connecting axis 220 is fixedly arranged on the connecting block 210; wherein, after the other end of the first connection point 110 and the other end of the second connection point 120 are screwed together by means of the screw connection 200, the two ends of the connecting axis 220 each extend through the other end of the first connection point 110 and the other end of the second connection point 120; wherein, by rotating the screw element 500 clockwise or counterclockwise, the connecting block 210 can be moved back and forth in the third receiving groove 330, so that a disassembly or connection between the fastening section 100 and the connecting section 300 is effected. Furthermore, the screw connection comprises 200 screw blocks 230, each fixedly arranged at the other end of the first connection point 110 and the second connection point 120, and at least two screws 240, each penetrating one of the screw blocks 230 and screwed to the other screw block 230; wherein connecting openings 250 are provided on each of the two screw blocks 230, with the two ends of the connecting axis 220 extending into each of the two connecting openings 250. Furthermore, several countersunk bores 350 are provided on the connecting section 300, through which the screw element 500 can pass, wherein the two ends of the countersunk bores 350 are each connected to the second receiving groove 320 and the third receiving groove 330 and are arranged symmetrically to the slot 340; wherein first threaded bores (not shown) are provided on the connecting block 210, which are each arranged symmetrically to the countersunk bores 350, wherein the screw element 500 is screwed into the first threaded bore (not shown) after passing through the countersunk bore 350. As shown in Fig. 1 and Fig. 5, the first receiving groove 310 and the second receiving groove 320 are preferably arranged perpendicular or horizontal to each other, which makes it easy to attach the locking chain 430 at different positions on the vehicle and increases its applicability. Furthermore, the two screw blocks 230 are arranged symmetrically, wherein one of the screw blocks 230 has at least two through holes (not shown) spaced from top to bottom, and the other screw block 230 has at least two second threaded holes (not shown), each arranged symmetrically to the through holes (not shown), and wherein the two connecting openings 250 are each arranged centrally between the two through holes (not shown) and the two second threaded holes (not shown), thereby facilitating a uniform force transmission at the connection area, extending the service life, and improving the stability of the force transmission onto the connection axis 220. Furthermore, the first connection point 110 and the second connection point 120 are each curved, which makes it easy to adapt them to the vehicle axle 10 and ensures high stability; The connecting block 210 has an arc-shaped opening 211 which is adapted to the shape of the vehicle axle 10, thereby improving both the adaptation stability to the vehicle axle 10 and the connection stability between the fastening section 100 and the connecting section 300. Furthermore, the theft-proof combination lock comprises a lock chain 430, wherein a lock ring 440 is movably arranged at one end of the lock chain 430, through which the lock chain 430 can pass, and the lock head 420 is connected to the other end of the lock chain 430. Furthermore, the theft-proof combination lock comprises a lock body 410 with a code component 411, wherein a locking bar 450 is arranged in the lock body 410, which interacts with the code component 411 for unlocking and locking. After unlocking, the locking bar 450 releases the limit of the lock head 420. The present invention adopts the corresponding structure from patent number ZL202520573014 entitled "Foldable Combination Lock". The foregoing represents the preferred embodiment of the present invention. It should be noted that a person skilled in the art in the relevant field may make several improvements and refinements, provided that they do not deviate from the principle of the present invention. These improvements and refinements shall also be considered within the scope of protection of the present invention.

Claims

Theft-proof combination lock, which is permanently attached to a vehicle axle (10), characterized in that it comprises: a fastening section (100) which serves to encase the outer circumference of the vehicle axle (10) and is attached to the vehicle axle (10) by means of a screw connection (200); a connecting section (300) which has a first receiving groove (310) for receiving the lock body (410) of the combination lock (400), a second receiving groove (320) connected to the first receiving groove (310) for receiving the lock head (420) of the combination lock (400) and a third receiving groove (330) for receiving the screw connection (200);and a screw element (500) configured such that, after the fastening section (100) has been screwed on by means of the screw connection (200), it penetrates the connecting section (300) and is screwed to the screw connection (200), so that a fixed connection is established between the fastening section (100) and the connecting section (300). The connecting section (300) has at least one slot (340) which is connected to the second receiving groove (320), the slot (340) being arranged corresponding to the screw element (500), and the screw element (500) being able to be rotated clockwise or counterclockwise through the slot (340) to effect a screwing or disassembly between the screw element (500) and the screw connection (200).wherein the lock head (420) is located in a position between the slot (340) and the screw element (500) after its connection with the lock body (410). Theft-proof combination lock according to claim 1, characterized in that the fastening section (100) comprises a first connection point (110) and a second connection point (120) which enclose the outer circumference of the vehicle axle (10), wherein one end of the first connection point (110) and the second connection point (120) is rotatably connected to each other, and the other end of the first connection point (110) and the second connection point (120) is screwed together via the screw connection (200). Theft-proof combination lock according to claim 2, characterized in that the screw connection (200) comprises a connecting block (210) arranged between the other end of the first connection point (110) and the other end of the second connection point (120), wherein a connecting axis (220) is fixedly arranged on the connecting block (210); wherein, after the other end of the first connection point (110) and the other end of the second connection point (120) are screwed together by means of the screw connection (200), the two ends of the connecting axis (220) extend each through the other end of the first connection point (110) and the other end of the second connection point (120);wherein by turning the screw element (500) clockwise or counterclockwise the connecting block (210) can be moved back and forth in the third receiving groove (330), so that disassembly or connection between the fastening section (100) and the connecting section (300) is effected. Theft-proof combination lock according to claim 3, characterized in that the screw connection (200) comprises screw blocks (230) which are each fixedly arranged at the other end of the first connection point (110) and the second connection point (120), and at least two screws (240) which each penetrate one of the screw blocks (230) and are screwed to the other screw block (230); wherein connecting openings (250) are provided on each of the two screw blocks (230), wherein the two ends of the connecting axis (220) extend into each of the two connecting openings (250). Theft-proof combination lock according to claim 4, characterized in that several countersunk bores (350) are formed on the connecting section (300) through which the screw element (500) can pass, wherein the two ends of the countersunk bores (350) are each connected to the second receiving groove (320) and the third receiving groove (330) and are arranged symmetrically to the slot (340); wherein first threaded bores are provided on the connecting block (210), which are each arranged symmetrically to the countersunk bores (350), and the screw element (500) is screwed into the first threaded bore after passing through the countersunk bore (350). Theft-proof combination lock according to claim 2, characterized in that the first receiving groove (310) and the second receiving groove (320) are arranged perpendicular to each other or horizontally to each other. Theft-proof combination lock according to claim 4, characterized in that the two screw blocks (230) are arranged symmetrically, wherein one of the screw blocks (230) is provided with at least two through holes spaced apart from top to bottom, the other screw block (230) is provided with at least two second threaded holes, each arranged symmetrically to the through holes, wherein the two connecting openings (250) are each arranged in the middle between the two through holes and the two second threaded holes. Theft-proof combination lock according to claim 3, characterized in that both the first connection point (110) and the second connection point (120) are provided in an arc shape; and that an arc shape opening (211) is provided on the connecting block (210) which is adapted to the outer shape of the vehicle axle (10). Theft-proof combination lock according to claim 1, characterized in that it comprises a lock chain (430), wherein a lock ring (440) is movably arranged at one end of the lock chain (430) through which the lock chain (430) can pass, and the lock head (420) is connected to the other end of the lock chain (430). Theft-proof combination lock according to claim 9, characterized in that it comprises a lock body (410) with a built-in code component (411), wherein a locking bar (450) is arranged in the lock body (410) which cooperates with the code component (411) for unlocking and locking, wherein after unlocking the locking bar (450) the limit of the lock head (420) is lifted.

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