A merchandise theft prevention device that automatically retracts

Abstract

The utility model discloses a commodity anti -theft device of automatic take -up, belong to commodity anti -theft technical field, including the shell, the shell includes the outer cover, shell one and shell two, the outer cover rotationally covers and set at the surface position department of shell one, shell one and shell two fixedly connect, the latch mechanism includes sliding assembly and magnetic component, sliding assembly includes lock cylinder pull plate, pawl and fixed part, lock cylinder pull plate and fixed part fixedly connect, lock cylinder pull plate and pawl all slidingly set up on the outer cover, through setting up latch mechanism, take -up mechanism, battery mechanism and alarm mechanism cooperation and use, in the process of taking, pulling the line, presss down locking piece and can stop down at any time, reach the required cable length, after pulling the cable again, can continue to take -up, release the line, and the device has the alarm function, under the condition of not unlocking, under the condition of the line cutting, strong line pulling, will alarm and play very good theftproof effect.

Description

Technical Field

[0001] This utility model belongs to the field of anti-theft technology, specifically relating to an anti-theft device for goods that can automatically retract its cord. Background Technology

[0002] When selling goods in supermarkets and other retail establishments, anti-theft devices are used to prevent theft.

[0003] Conventional anti-theft devices for goods use electronic anti-theft devices, which are susceptible to electromagnetic interference and may malfunction, resulting in certain incompleteness in their use. Therefore, we propose an anti-theft device for goods that can automatically retract its cord. Utility Model Content

[0004] The purpose of this utility model is to provide an anti-theft device for goods that can automatically retract its cord, in order to solve the problem mentioned in the background art that conventional anti-theft devices for goods directly use electronic anti-theft devices for anti-theft purposes, which are easily affected by electromagnetic interference and may fail, and have certain incompleteness in use.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an anti-theft device for goods with automatic cord retraction, comprising a shell, the shell comprising an outer cover, a first shell and a second shell, the outer cover being rotatably sleeved on the surface of the first shell, and the first shell and the second shell being fixedly connected.

[0006] A latching mechanism includes a sliding assembly and a magnetic assembly. The sliding assembly includes a lock cylinder pull plate, a pawl, and a fixing member. The lock cylinder pull plate is fixedly connected to the fixing member. Both the lock cylinder pull plate and the pawl are slidably disposed on an outer cover. The lock cylinder pull plate and the pawl are arranged opposite to each other and cooperate with each other. The magnetic assembly includes a lock cylinder and a lock cylinder cover. The lock cylinder cover is sleeved on the outside of the lock cylinder. The lock cylinder is slidably disposed on the outer cover. The lock cylinder pull plate has a through hole for the lock cylinder to slide into. The inner wall of the housing is fixed with a number of ratchet teeth. The pawl cooperates with the ratchet teeth.

[0007] The winding mechanism includes a drum and a coil spring. The drum is fixedly installed on the inner wall of the outer cover. The drum is located inside housing one and housing two. The two ends of the coil spring are fixedly connected to the drum and housing two, respectively. The drum is equipped with two wire end slots and a wire buckle. The drum has several wire threading slots. Cables are wound on the drum.

[0008] A wire groove seat is movably disposed on the lower surface of the housing two.

[0009] The above solution utilizes a combination of a latching mechanism, a cable reeling mechanism, a battery mechanism, and an alarm mechanism. During cable reeling and pulling, pressing the locking mechanism stops the cable at any time until the desired length is reached. Pulling the cable again resumes reeling and unloading. The device also features an alarm function; if the cable is cut or pulled forcefully while the cable is locked, an alarm will sound, providing excellent anti-theft protection. The use of a reel with a spring allows for rapid cable reeling after unlocking the reel, enhancing ease of use.

[0010] In a preferred embodiment, an alarm mechanism is provided inside the housing. The alarm mechanism includes a circuit board, a warning light, and a buzzer. The circuit board, warning light, and buzzer are all fixedly installed on the inner wall of the housing. The fixing component is used in sliding cooperation with the switch of the warning light and the buzzer.

[0011] Using the above solution, the switch of the warning light and buzzer is turned on when the fixing part slides. Therefore, when the cable is cut and accidentally tangled and retracted, the warning light and buzzer will be turned on, thus achieving the effect of sound and light warning.

[0012] In a preferred embodiment, a battery mechanism is provided inside the housing two. The battery mechanism includes a battery, a battery holder, a battery cover, and a flange seat. The battery holder is installed on the lower surface of the drum, and the battery is installed on the lower surface of the battery holder. An opening is provided on the lower surface of the housing two directly opposite the position of the battery. The battery cover is fastened to the inner wall of the opening. The flange seat is fixed to the lower surface of the housing two. The wire groove seat and the flange seat are connected by a snap fastener.

[0013] The above solution uses batteries to power all electrical components, eliminating the need for an external power source and ensuring normal operation. The battery cover facilitates timely battery replacement.

[0014] In a preferred embodiment, the housing 2 is provided with a locking mechanism, which includes a locking member rotatably installed in a locking hole on the housing 2. The surface of the drum is provided with a plurality of locking grooves, and the locking member cooperates with the locking grooves.

[0015] By adopting the above solution, the locking mechanism can effectively lock the drum and prevent accidental rotation.

[0016] In a preferred embodiment, a spring is installed on the lock cylinder pull plate, and the end of the spring away from the lock cylinder pull plate is fixedly connected to the outer cover.

[0017] Using the above scheme, the spring can achieve a quick reset effect. When the lock cylinder pull plate slides and drives the pawl and ratchet to engage and lock, the spring is in a deformed state. Therefore, when the lock is disengaged from the through hole on the lock cylinder pull plate, the elastic force of the spring can be used to quickly drive the lock cylinder pull plate to reset.

[0018] In a preferred embodiment, a second spring is installed on the lock cylinder cover, and the end of the second spring away from the lock cylinder cover is fixedly connected to the outer cover.

[0019] Using the above solution, the elasticity of spring two can drive the lock cylinder to quickly insert into the through hole, improving the convenience of locking operation.

[0020] Compared with the prior art, the beneficial effects of this utility model are:

[0021] This automatic cable retraction anti-theft device works by combining a latch mechanism, a cable retraction mechanism, a battery mechanism, and an alarm mechanism. During the cable retraction and pulling process, pressing the locking device will stop the cable at any time until the desired cable length is reached. Pulling the cable again will then allow the cable to continue retracting and extending. The device also has an alarm function. If the cable is cut or pulled forcefully while the device is locked, it will sound an alarm, providing a good anti-theft effect.

[0022] This anti-theft device with automatic cable retraction uses a reel in conjunction with a spring. When the cable is pulled out, the spring deforms, allowing for quick cable retraction after the reel is unlocked, thus improving ease of operation. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of this utility model;

[0024] Figure 2 This is a schematic diagram of the structure of the present invention in an explosion.

[0025] Figure 3 This is a structural schematic diagram of the main cross-section of this utility model;

[0026] Figure 4 This is a schematic diagram of the structure of the outer cover of this utility model;

[0027] Figure 5 This is a structural schematic diagram of the outer cover of this utility model from another angle;

[0028] Figure 6 This is an exploded structural diagram of the outer cover, lock core pull plate, ratchet, and fasteners of this utility model.

[0029] Figure 7 This is a schematic diagram of the structure of the housing of this utility model;

[0030] Figure 8 This is a schematic diagram of the structure of the roll of this utility model;

[0031] Figure 9 This is a schematic diagram of the structure of the housing, the drum, and the coil spring of this utility model;

[0032] Figure 10 This is a schematic diagram of the structure of the second shell of this utility model.

[0033] In the picture:

[0034] 1. Cable tray seat; 2. Outer cover; 3. Housing 1; 4. Housing 2; 5. Lock cylinder pull plate; 6. Fixing component; 7. Pawl; 8. Racket tooth; 9. Lock cylinder; 10. Lock cylinder cover; 11. Circuit board; 12. Warning light; 13. Buzzer; 14. Reel; 15. Coil spring; 16. Locking component; 17. Battery; 18. Battery holder; 19. Battery cover; 20. Flange seat; 21. Cable clip; 22. Cable pass-through channel; 23. Locking groove; 24. Wire end clip. Detailed Implementation

[0035] Please see Figure 1-10 This utility model provides an anti-theft device for goods with automatic cord retraction, including a shell, which includes an outer cover 2, a first shell 3 and a second shell 4. The outer cover 2 is rotatably sleeved on the surface of the first shell 3, and the first shell 3 and the second shell 4 are fixedly connected.

[0036] The latching mechanism includes a sliding component and a magnetic component. The sliding component includes a lock cylinder pull plate 5, a pawl 7, and a fixing member 6. The lock cylinder pull plate 5 is fixedly connected to the fixing member 6. Both the lock cylinder pull plate 5 and the pawl 7 are slidably mounted on the outer cover 2. The lock cylinder pull plate 5 and the pawl 7 are arranged opposite to each other and cooperate with each other. The magnetic component includes a lock cylinder 9 and a lock cylinder cover 10. The lock cylinder cover 10 is sleeved on the outside of the lock cylinder 9. The lock cylinder 9 is slidably mounted on the outer cover 2. The lock cylinder pull plate 5 has a through hole for the lock cylinder 9 to slide into. Several ratchet teeth 8 are fixed on the inner wall of the housing 3. The pawl 7 cooperates with the ratchet teeth 8.

[0037] The winding mechanism includes a drum 14 and a coil spring 15. The drum 14 is fixedly installed on the inner wall of the outer cover 2. The drum 14 is located inside the housing 1 3 and the housing 2 4. The two ends of the coil spring 15 are fixedly connected to the drum 14 and the housing 2 4 respectively. Two wire end slots 24 and a wire buckle 21 are installed on the drum 14. Several wire threading slots 22 are opened on the drum 14. Cables are wound on the drum 14.

[0038] The wire groove seat 1 is movably disposed on the lower surface of the housing 2 4.

[0039] By using a combination of a latching mechanism, a cable reeling mechanism, a battery 17 mechanism, and an alarm mechanism, the device can stop at any time during the cable reeling and pulling process by pressing the locking piece 16 until the desired cable length is reached. Afterward, pulling the cable again will continue the reeling and unloading process. The device also has an alarm function, which will sound an alarm if the cable is cut or pulled forcefully when it is locked, providing a good anti-theft effect. By using a drum 14 in conjunction with a coil spring 15, the coil spring 15 deforms when the cable is pulled out. Therefore, after unlocking the drum 14, the coil spring 15 can be used to quickly reel in the cable, improving the ease of operation.

[0040] An alarm mechanism is installed inside the housing 3. The alarm mechanism includes a circuit board 11, a warning light 12, and a buzzer 13. The circuit board 11, the warning light 12, and the buzzer 13 are all fixedly installed on the inner wall of the housing 3. The fixing part 6 is used in sliding cooperation with the switch of the warning light 12 and the buzzer 13. When the fixing part 6 slides, it drives the switch of the warning light 12 and the buzzer 13 to turn on. Therefore, when the cable is cut and accidentally tangled and retracted, it will drive the warning light 12 and the buzzer 13 to turn on, thereby achieving the effect of sound and light warning.

[0041] The housing 2 4 is equipped with a battery 17 mechanism, which includes a battery 17, a battery holder 18, a battery cover 19, and a flange seat 20. The battery holder 18 is installed on the lower surface of the drum 14, and the battery 17 is installed on the lower surface of the battery holder 18. An opening is provided on the lower surface of the housing 2 4 directly opposite the position of the battery 17. The battery cover 19 is snapped onto the inner wall of the opening. The flange seat 20 is fixed to the lower surface of the housing 2 4. The wire trough seat 1 and the flange seat 20 are connected by a snap-fit. The battery 17 is used to power the various electrical components, eliminating the need for an external power supply and ensuring normal operation. The battery cover 19 facilitates timely replacement of the battery 17.

[0042] The housing 2 4 is provided with a locking mechanism, which includes a locking member 16. The locking member 16 is rotatably installed in a locking hole opened on the housing 2 4. The surface of the drum 14 is provided with a number of locking grooves 23. The locking member 16 works in conjunction with the locking grooves 23. The setting of the locking member 16 can enhance the locking effect of the drum 14 and prevent accidental rotation.

[0043] A spring is installed on the lock cylinder pull plate 5, and the end of the spring away from the lock cylinder pull plate 5 is fixedly connected to the outer cover 2. The spring can achieve a quick reset effect. When the lock cylinder pull plate 5 slides to drive the pawl 7 and the ratchet 8 to engage and lock, the spring is in a deformed state. Therefore, when the lock cylinder pull plate 5 is locked out of the through hole, the elastic force of the spring can be used to quickly drive the lock cylinder pull plate 5 to reset.

[0044] A second spring is installed on the lock cylinder cover 10, and the end of the second spring away from the lock cylinder cover 10 is fixedly connected to the outer cover 2. The elastic force of the second spring can drive the lock cylinder 9 to quickly insert into the through hole, improving the convenience of locking operation.

[0045] In use, the cable passes through the cable buckle 21 in the middle, and both ends are inserted into the cable end slots 24. Then, the cable passes through the cable groove 22 and winds around the surface of the drum 14, and passes through the cable groove seat 1 and exits the entire device. When the cable needs to be pulled out, the locking member 16 is rotated to disengage from the locking groove 23 on the drum 14, thus unlocking the drum 14. Then, the cable is pulled out to a suitable length, and the locking member 16 is rotated to engage with the locking groove 23 on the drum 14, thus locking the drum 14. Then, the lock cylinder pull plate 5 is pressed, which drives the pawl 7 to engage with the ratchet 8. At this time, the lock cylinder 9 engages with the through hole on the lock cylinder pull plate 5, thus locking the lock cylinder pull plate 5 and locking the outer cover 2, preventing... The outer cover 2 is not rotated, thus preventing the drum 14 from rotating and achieving double locking of the drum 14. When the cable is pulled out, the coil spring 15 deforms. When the cable needs to be retracted, the lock cylinder cover 10 is pulled to make the lock cylinder 9 disengage from the through hole. At this time, the lock cylinder pull plate 5 will reset, thus causing the pawl 7 to disengage from the ratchet 8. The locking member 16 is rotated to disengage from the locking groove 23. At this time, the elastic force of the coil spring 15 will drive the drum 14 to rotate, thus retracting the cable. At the same time, when the lock cylinder pull plate 5 drives the pawl 7 to approach the ratchet 8 for engagement, it will drive the fixing member 6 to move. The sliding of the fixing member 6 will drive the warning light 12 and the buzzer 13 to switch on. When the cable is pulled or cut by force, the warning light 12 and the buzzer 13 will be activated to sound an alarm.

Claims

1. A merchandise anti-theft device with automatic cord retraction, characterized in that: Includes an outer shell, which includes an outer cover (2), a first shell (3) and a second shell (4). The outer cover (2) is rotatably fitted onto the surface of the first shell (3), and the first shell (3) and the second shell (4) are fixedly connected. The latching mechanism includes a sliding component and a magnetic component. The sliding component includes a lock cylinder pull plate (5), a pawl (7), and a fixing member (6). The lock cylinder pull plate (5) is fixedly connected to the fixing member (6). The lock cylinder pull plate (5) and the pawl (7) are both slidably disposed on the outer cover (2). The lock cylinder pull plate (5) and the pawl (7) are arranged opposite to each other and cooperate with each other. The magnetic component includes a lock cylinder (9) and a lock cylinder cover (10). The lock cylinder cover (10) is sleeved on the outside of the lock cylinder (9). The lock cylinder (9) is slidably disposed on the outer cover (2). The lock cylinder pull plate (5) has a through hole for the lock cylinder (9) to slide into. The inner wall of the housing (3) is fixed with several ratchet teeth (8). The pawl (7) cooperates with the ratchet teeth (8). The winding mechanism includes a drum (14) and a coil spring (15). The drum (14) is fixedly installed on the inner wall of the outer cover (2). The drum (14) is located inside the first housing (3) and the second housing (4). The two ends of the coil spring (15) are fixedly connected to the drum (14) and the second housing (4) respectively. The drum (14) is equipped with two wire end slots (24) and a wire buckle (21). The drum (14) has several wire threading slots (22). The drum (14) is wound with a cable. The wire groove seat (1) is movably disposed on the lower surface of the housing (4).

2. The anti-theft device for goods with automatic retraction as described in claim 1, characterized in that: An alarm mechanism is provided inside the housing (3). The alarm mechanism includes a circuit board (11), a warning light (12), and a buzzer (13). The circuit board (11), the warning light (12), and the buzzer (13) are all fixedly installed on the inner wall of the housing (3). The fixing member (6) is used in conjunction with the switch of the warning light (12) and the buzzer (13).

3. The anti-theft device for goods with automatic retraction as described in claim 2, characterized in that: The housing (4) is equipped with a battery (17) mechanism, which includes a battery (17), a battery holder (18), a battery cover (19), and a flange seat (20). The battery holder (18) is installed on the lower surface of the drum (14), and the battery (17) is installed on the lower surface of the battery holder (18). An opening is provided on the lower surface of the housing (4) directly opposite the position of the battery (17). The battery cover (19) is fastened to the inner wall of the opening. The flange seat (20) is fixed to the lower surface of the housing (4). The wire groove seat (1) and the flange seat (20) are connected by a snap fastener.

4. The anti-theft device for goods with automatic cord retraction according to claim 3, characterized in that: The housing 2 (4) is provided with a locking mechanism, which includes a locking member (16). The locking member (16) is rotatably installed in a locking hole opened on the housing 2 (4). The surface of the drum (14) is provided with a plurality of locking grooves (23). The locking member (16) is used in conjunction with the locking grooves (23).

5. The anti-theft device for goods with automatic cord retraction according to claim 4, characterized in that: A spring is installed on the lock cylinder pull plate (5), and the end of the spring away from the lock cylinder pull plate (5) is fixedly connected to the outer cover (2).

6. The anti-theft device for goods with automatic retraction as described in claim 5, characterized in that: A second spring is installed on the lock cylinder cover (10), and the end of the second spring away from the lock cylinder cover (10) is fixedly connected to the outer cover (2).

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