Built-in ultrathin pull box device

Abstract

The utility model belongs to a safety display anti-theft device for commodities, and particularly relates to a built-in ultrathin pull box device, which comprises a fixed cover and a turntable, a coil spring is arranged between the fixed cover and the turntable, and a positioning shaft is arranged in the fixed cover; the turntable is rotationally arranged outside the positioning shaft; a turntable cover for limiting and a clamping piece are arranged at the bottom of the turntable; a plurality of conductive copper rings are arranged on the turntable; a cable is wound outside the turntable; a circuit board is arranged on the fixed cover; the circuit board is provided with a corresponding number of conductive elastic sheets; and the conductive copper rings are respectively connected with the cable and the conductive elastic sheets to form one or more groups of conductive circuits. The conductive copper ring synchronously rotating with the turntable is connected with the conductive elastic sheet on the fixed cover to conduct electricity, and a conductive slip ring in the prior art is replaced, so that the bottom of the turntable is not provided with a slip ring module any more, and compared with the prior art, the production and manufacturing cost is reduced, the internal structure is simplified, and the assembly convenience is improved.

Description

Technical Field

[0001] This utility model relates to a pull-out box, specifically a built-in ultra-thin pull-out box device, which is a safe display and anti-theft device for goods. Background Technology

[0002] In existing pull-out boxes, because the cable is wrapped around the outside of the turntable, a conductive slip ring is installed on the turntable to conduct electricity to the cable, such as the anti-theft pull-out box disclosed in Chinese Patent Document No. CN209331612U. Products using a similar conductive slip ring structure have the following drawbacks: A conductive ring module is usually placed at the bottom of the turntable, increasing the overall thickness of the pull-out box; simultaneously, because the conductive ring module is at the bottom of the turntable, a bottom shell is required, which is then connected to the top shell to form a cavity, further increasing the thickness of the pull-out box. Furthermore, since the conductive slip ring and conductive ring module need to be specifically designed and manufactured for the pull-out box, it increases production costs and assembly difficulty. Chinese patent document CN219469338U discloses a pull-cord box, which proposes a solution to address the drawbacks of large size and high cost of conductive slip rings by using conductive bearings instead of slip rings. However, the conductive bearings are connected to the spring, resulting in high impedance and poor conductivity. Furthermore, the conductive material of the bearing may experience poor contact due to friction, oxidation, or other factors. Additionally, the wires are electrically connected through the inner and outer rings of the bearing, a connection method that may lead to wire wear or breakage due to the rotation of the winding reel, especially under frequent wire winding and unwinding conditions. Therefore, further improvements are necessary. Utility Model Content

[0003] The purpose of this utility model is to overcome the above-mentioned technical deficiencies and propose a built-in ultra-thin pull box device with simple structure, reasonable size, stable and reliable, convenient assembly, and low cost.

[0004] An integrated ultra-thin cable box device includes a fixed cover and a turntable; a coil spring is provided between the fixed cover and the turntable, and a positioning shaft is provided on the inner side of the fixed cover; the turntable is rotatably positioned outside the positioning shaft; a turntable cover and a locking device for rotation limit are provided at the bottom of the turntable; a number of conductive copper rings are provided on the turntable; a cable is surrounded around the turntable; a circuit board is provided on the fixed cover; the circuit board is provided with a corresponding number of conductive springs; the conductive copper rings are respectively connected to the cable and the conductive springs to form one or more sets of conductive circuits.

[0005] Furthermore, the turntable has a central hole coaxially formed; a shaft hole is provided in the central hole relative to the positioning shaft; the turntable cover is located at the bottom of the central hole; and an insertion hole is provided on the turntable cover relative to the positioning shaft.

[0006] Furthermore, a recessed groove is provided around the insertion hole; the positioning shaft passes through the shaft hole and the insertion hole; an annular groove is provided around the lower part of the positioning shaft; the retaining element is a retaining circlip; the retaining circlip is sleeved in the annular groove; the annular groove and the retaining circlip are located in the recessed groove.

[0007] Furthermore, the conductive copper ring includes a first copper ring and a second copper ring distributed inside and outside; the conductive spring is provided with a first spring and a second spring opposite to the first copper ring and the second copper ring; the bottom of the first copper ring and the second copper ring are respectively provided with terminals; the terminals are connected to the cable.

[0008] Furthermore, the first copper ring and the second copper ring are bonded to the turntable using a first double-sided adhesive or glue; the circuit board is bonded to the fixed cover using a second double-sided adhesive or glue.

[0009] Furthermore, a connector is provided at one end of the circuit board; the fixing cover has through holes for the first and second spring contacts to pass through.

[0010] Furthermore, the fixing cover has 2-4 fixing holes in its circumference.

[0011] Furthermore, one end of the coil spring is connected to the fixed cover, and the other end is connected to the turntable.

[0012] This utility model has the following advantages: it uses a conductive copper ring that rotates synchronously with the turntable to connect with a conductive spring on the fixed cover for conduction, replacing the conductive slip ring in the prior art. This eliminates the slip ring module at the bottom of the turntable, reducing manufacturing costs and simplifying its internal structure compared to the prior art, thus improving ease of assembly. Furthermore, since the slip ring module is no longer installed at the bottom of the turntable, there is no need to install a bottom shell; instead, it is directly fixed by the mounting cover. This significantly reduces the overall thickness of the pull box. Only the turntable cover needs to be used to seal the turntable at the bottom, and then a retaining spring is used for positioning, eliminating complex assembly relationships. Attached Figure Description

[0013] Figure 1 This is an exploded structural diagram of the present invention.

[0014] Figure 2 This is a schematic diagram of the assembly state of this utility model.

[0015] Figure 3 This is a structural schematic diagram of the present invention viewed from below.

[0016] Figure 4 This is a partial structural diagram of the turntable, turntable cover, and clamps.

[0017] Figure 5 This is a partial structural diagram of the fixing cover and the circuit board.

[0018] In the diagram: 10 is the cable, 20 is the turntable, 21 is the first double-sided adhesive, 221 is the first copper ring, 222 is the second copper ring, 23 is the coil spring, 24 is the turntable cover, 24-1 is the insertion hole, 24-2 is the recess, 25 is the snap ring, 26 is the center hole, 27 is the shaft hole, 30 is the fixing cover, 301 is the positioning shaft, 301-1 is the ring groove, 31 is the second double-sided adhesive, 321 is the first spring, 322 is the second spring, 33 is the circuit board, 34 is the connector, and 35 is the fixing hole. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0020] See Figures 1-5 This application discloses a built-in ultra-thin cable box device, including a fixed cover 30 and a turntable 20; a coil spring 23 is provided between the fixed cover 30 and the turntable 20, and a positioning shaft 301 is provided inside the fixed cover 30; the turntable 20 is rotatably disposed outside the positioning shaft 301; a turntable cover 24 and a locking device for rotation limit are provided at the bottom of the turntable 20; a plurality of conductive copper rings are provided on the turntable 20; a cable 10 is surrounded around the turntable 20; a circuit board 33 is provided on the fixed cover 30; the circuit board 33 is provided with a corresponding number of conductive springs; the conductive copper rings are respectively connected to the cable and the conductive springs to form one or more sets of conductive lines.

[0021] The number of conductive copper rings and conductive springs can be two, but is not limited to multiple. In the following embodiments, it is preferred to implement the method of using two.

[0022] Furthermore, the turntable 20 has a coaxial central hole 26; a shaft hole 27 is provided in the central hole 26 relative to the positioning shaft 301; the turntable cover 24 is located at the bottom of the central hole 26; and an insertion hole 24-1 is provided on the turntable cover 24 relative to the positioning shaft 301.

[0023] Furthermore, a recessed groove 24-2 is provided around the insertion hole 24-1; the positioning shaft 301 passes through the shaft hole 27 and the insertion hole 24-1; an annular groove 301-1 is provided around the lower part of the positioning shaft 301; the retaining element is a retaining spring 25; the retaining spring 25 is sleeved in the annular groove 301-1; the annular groove 301-1 and the retaining spring 25 are located in the recessed groove 24-2.

[0024] Because this pull box eliminates the bottom shell and instead uses a simpler turntable cover 24 to seal the center hole 26 of the turntable 20 at the bottom, the limiting mechanism between the turntable cover 24 and the turntable 20 is achieved using a retaining ring 25. Specifically, since the lower end of the positioning shaft 301 passes through the shaft hole 27 and the insertion hole 24-1 on the turntable cover 24 and is located in the recess 24-2, the annular groove 301-1 on the surface of the positioning shaft 301 is located on the lower surface of the turntable cover 24. Therefore, the retaining ring 25 can simultaneously engage with the protrusions in the annular groove 301-1 and the recess 24-2, thus limiting the position of the turntable cover 24 and the positioning shaft 301.

[0025] Furthermore, the conductive copper ring includes a first copper ring 221 and a second copper ring 222 distributed inside and outside; the conductive spring is provided with a first spring 321 and a second spring 322 opposite to the first copper ring 221 and the second copper ring 222; the bottom of the first copper ring 221 and the second copper ring 222 are respectively provided with terminals; the terminals are connected to the cable 10.

[0026] Furthermore, the first copper ring 221 and the second copper ring 222 are bonded to the turntable 20 by the first double-sided adhesive 21 or glue; the circuit board 33 is bonded to the fixing cover 30 by the second double-sided adhesive 31 or glue.

[0027] Furthermore, a connector 34 is provided at one end of the circuit board 33; the fixing cover 30 has a through hole for the first spring 321 and the second spring 322 to pass through.

[0028] In this embodiment, the conductive copper sheet and the conductive spring are used in pairs for conduction. In other embodiments, more than one copper sheet and one conductive spring may be used for conduction.

[0029] Furthermore, the fixing cover 30 is provided with 2-4 fixing holes 35 in the circumferential direction.

[0030] To elaborate further, one end of the coil spring 23 is connected to the fixed cover 30, and the other end is connected to the turntable 20.

[0031] Working principle: Since the first copper ring 221 and the second copper ring 222 are bonded to the turntable 20 with the first double-sided adhesive 21 or glue, they rotate synchronously with the turntable 20 and maintain constant contact with the first spring 321 and the second spring 322 on the upper part. The first spring 321 and the second spring 322 are connected to an external conductive source through the connector 34. Therefore, while the turntable 20 rotates, it can still maintain the electrical signal input from the connector 34 and input it into the cable 10 to maintain a continuous conductive connection. The advantage of this design is that it eliminates the need for a complex conductive slip ring structure. Instead, it uses conductive copper rings and conductive springs that can maintain electrical connection at all times and adapt to the rotation of the turntable 20, reducing manufacturing costs and assembly difficulty. At the same time, since there is no conductive ring module at the bottom of the turntable 20, there is no need for a bottom shell. Instead, a simpler turntable cover 24 is used instead, reducing the overall thickness and further reducing assembly difficulty and cost. During installation, first connect and limit the turntable cover 24 to the positioning shaft 301, then fix the fixed cover 20 to the desktop or other location by passing the fixing member through the fixing hole 35 around the fixed cover 30. When pulling the cable, the fixed cover 20 is relatively fixed, and the cable 10 drives the turntable 20 to rotate relative to the fixed cover 20 to release the cable.

[0032] The specific embodiments of this utility model described above do not constitute a limitation on the scope of protection of this utility model. Any other corresponding changes and modifications made based on the technical concept of this utility model should be included within the scope of protection of the claims of this utility model.

Claims

1. A built-in ultra-thin drawer box device, comprising a fixed cover (30) and a turntable (20); a coil spring (23) is provided between the fixed cover (30) and the turntable (20), characterized in that: A positioning shaft (301) is provided inside the fixed cover (30); the turntable (20) is rotatably located outside the positioning shaft (301); a turntable cover (24) and a clip are provided at the bottom of the turntable (20); a number of conductive copper rings are provided on the turntable (20); a cable (10) is surrounded around the turntable (20); a circuit board (33) is provided on the fixed cover (30); a corresponding number of conductive springs are provided on the circuit board (33); the conductive copper rings are connected to the cable and the conductive springs respectively to form one or more sets of conductive circuits.

2. The built-in ultra-thin drawstring box device according to claim 1, characterized in that: A central hole (26) is coaxially provided inside the turntable (20); a shaft hole (27) is provided inside the central hole (26) relative to the positioning shaft (301); the turntable cover (24) is provided at the bottom of the central hole (26); an insertion hole (24-1) is provided on the turntable cover (24) relative to the positioning shaft (301).

3. The built-in ultra-thin drawstring box device according to claim 2, characterized in that: A recessed groove (24-2) is provided around the insertion hole (24-1); the positioning shaft (301) passes through the shaft hole (27) and the insertion hole (24-1); an annular groove (301-1) is provided around the lower part of the positioning shaft (301); the retaining element is a retaining ring (25); the retaining ring (25) is fitted in the annular groove (301-1); the annular groove (301-1) and the retaining ring (25) are located in the recessed groove (24-2).

4. The built-in ultra-thin drawstring box device according to claim 1, characterized in that: The conductive copper ring includes a first copper ring (221) and a second copper ring (222) distributed inside and outside; the conductive spring is provided with a first spring (321) and a second spring (322) opposite to the first copper ring (221) and the second copper ring (222); the bottom of the first copper ring (221) and the second copper ring (222) are respectively provided with terminals; the terminals are connected to the cable (10).

5. The built-in ultra-thin drawstring box device according to claim 4, characterized in that: The first copper ring (221) and the second copper ring (222) are bonded to the turntable (20) with the first double-sided adhesive (21) or glue; the circuit board (33) is bonded to the fixing cover (30) with the second double-sided adhesive (31) or glue.

6. The built-in ultra-thin drawstring box device according to claim 5, characterized in that: A connector (34) is provided at one end of the circuit board (33); the fixing cover (30) has through holes for the first spring (321) and the second spring (322) to pass through.

7. The built-in ultra-thin drawstring box device according to claim 6, characterized in that: The fixing cover (30) has 2-4 fixing holes (35) in the circumferential direction.

8. The built-in ultra-thin drawstring box device according to claim 1, characterized in that: One end of the coil spring (23) is connected to the fixed cover (30), and the other end is connected to the turntable (20).

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