Telescopic line with supporting sliding feet

Abstract

The utility model discloses a telescopic line with supporting sliding feet, which comprises a shell and a reel, the reel is mounted in the shell, a ball groove is fixedly arranged in the shell, a ball is arranged in the ball groove, and the ball is directly or indirectly abutted against the reel. According to the utility model, the balls are arranged on the shell, and sliding friction between the shell and the circuit board can be changed into rolling friction through the balls, so that the stretching smoothness of the wire rod is greatly improved, and the wire rod can stretch out or retract back more smoothly without generating a blocking phenomenon.

Description

Technical Field

[0001] This utility model discloses a telescopic cable, particularly a telescopic cable with a supporting sliding foot, belonging to the field of consumer electronics technology. Background Technology

[0002] Retractable cord is a type of wire with retractable function. It can usually be divided into: (1) double retractable cord, which can be retracted from both ends to the middle or stretched from the middle to both ends; (2) single retractable cord, which can only be stretched and retracted from one end. Usually, one end is fixed and the other end can be stretched freely.

[0003] Retractable cables are commonly used in electronic devices such as mouse cables, headphone cables, charger cables, data cables, and webcam cables. They are also used in network communications, such as RJ45 network cables and RJ11 telephone cables, and in applications requiring adjustable cable length, such as fan cables and medical equipment cables. Retractable cables can be folded into a smaller volume when not in use, making them easy to carry and store, solving the problem of cumbersome carrying of traditional straight cables. They are especially suitable for frequent business travelers or tourists.

[0004] Existing retractable cables all have an internal spool. When the cable is pulled, the spool automatically unfolds the cable, making it longer; when the cable is released, an internal spring or other spool mechanism causes the cable to automatically retract into the spool, returning it to its original length. Most retractable cables are equipped with a locking device. When the user pulls the cable to the desired length, the locking device inside the spool locks the cable, preventing it from automatically retracting. The user can unlock the cable by pulling it again or pressing a specific button, restoring it to its retractable state.

[0005] However, current telescopic cable structures are relatively simple, usually involving direct friction between the spool and the outer casing, or between the spool and internal circuit boards or other materials. This can easily cause jamming or other issues when extending or retracting, making the cable slide unevenly. Summary of the Invention

[0006] In view of the shortcomings of the prior art telescopic cable mentioned above, which is that friction easily occurs between the spool and other components, resulting in uneven sliding, this utility model provides a telescopic cable with a supporting sliding foot. The cable has ball bearings on its outer shell, which can transform the sliding friction between the outer shell and the circuit board into rolling friction, greatly improving the smoothness of the cable extension and retraction.

[0007] The technical solution adopted by this utility model to solve its technical problem is: a telescopic cable with a supporting sliding foot, the telescopic cable includes a shell and a spool, the spool is installed inside the shell, a ball groove is fixedly provided inside the shell, and balls are provided in the ball groove, the balls directly or indirectly abutting against the spool.

[0008] The technical solution adopted by this utility model to solve its technical problem further includes:

[0009] The outer shell includes a first shell and a second shell installed together. A slot is provided at the upper edge of the first shell, and a hook is fixedly provided at the corresponding position on the second shell, which engages with the slot.

[0010] A first positioning pin is fixedly provided at the edge of the second housing, and a first positioning hole is provided at the corresponding position on the first housing, and the first positioning pin is inserted into the first positioning hole.

[0011] A rotating shaft is fixedly installed at the middle position inside the first housing, and a scroll is mounted on the rotating shaft.

[0012] A winding shaft for winding cables is fixedly installed on the spool facing the first housing side. The cables are wound on the winding shaft, and a coil spring is installed in the cavity inside the winding shaft.

[0013] A first circuit board is fixedly installed on the spool, and a cable wound on the spool is electrically connected to the first circuit board. A second circuit board is installed on the second housing, and one or more conductive spring modules are fixedly installed on the second circuit board. Each conductive spring module is provided with one or more conductive springs. A conductive ring is provided at a corresponding position on the first circuit board, and the conductive ring and the conductive spring abut against each other.

[0014] The second housing is fixedly provided with a second positioning pin, and a second positioning hole is provided on the second circuit board, and the second positioning pin is inserted into the second positioning hole.

[0015] The second housing has a notch, and part of the second circuit board is exposed at the notch.

[0016] The ball groove is fixedly installed inside the second housing, and the ball is installed in the ball groove. There are two or more sets of ball grooves and balls, and the two or more sets of ball grooves and balls are evenly distributed along the center of the rotating shaft with the center of the rotating shaft as the center.

[0017] The ball is spherical, the ball groove is cylindrical, the inner diameter of the ball groove is greater than or equal to the diameter of the ball, and the depth of the ball groove is less than the diameter of the ball. A through hole is provided on the second circuit board corresponding to the position of the ball groove, and the ball groove passes through the through hole so that the ball contacts the first circuit board.

[0018] The beneficial effects of this utility model are: the utility model has ball bearings on the outer shell, which can change the sliding friction between the outer shell and the circuit board into rolling friction, greatly improving the smoothness of wire extension and retraction, making it smoother whether it extends or retracts, and preventing jamming.

[0019] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0021] Figure 2 This is a schematic diagram of the exploded state structure of this utility model.

[0022] Figure 3 This is a three-dimensional structural schematic diagram of the present invention from another perspective.

[0023] Figure 4 This is a schematic diagram of the exploded state structure from another perspective of this utility model.

[0024] In the figure, 1-first housing, 11-bayonet, 12-rotating shaft, 13-first positioning hole, 2-second housing, 21-hook, 22-ball groove, 23-ball, 24-notch, 25-first positioning pin, 26-second positioning pin, 27-locking post, 3-spool, 31-winding shaft, 32-locking groove, 33-locking snap-fit ​​position, 4-first circuit board, 5-second circuit board, 51-through hole, 52-second positioning hole, 53-conductive spring module, 6-bearing. Detailed Implementation

[0025] This embodiment is a preferred embodiment of the present invention. All other embodiments that are the same as or similar to this embodiment in principle and basic structure are within the protection scope of the present invention.

[0026] Please refer to the appendix for details. Figure 1 To be continued Figure 4 This utility model mainly protects a telescopic cable with a supporting sliding foot, which mainly includes a shell and a spool 3. The spool 3 is installed inside the shell, and a ball groove 22 is fixedly provided inside the shell. A ball 23 is provided in the ball groove 22. The ball 23 directly or indirectly abuts against the spool 3. In traditional cases, when the spool rotates, sliding friction occurs between it and the shell, and the friction force is relatively large. This utility model, through the design of the ball 23, converts the sliding friction between the spool 3 and the shell into rolling friction, which makes its sliding smoother.

[0027] In this embodiment, the outer shell includes a first shell 1 and a second shell 2 installed together. The separate shell design facilitates assembly. Alternatively, a shell-and-cover structure can be used. In this embodiment, a latch 11 is provided at the upper edge of the first shell 1, and a hook 21 is fixedly provided at a corresponding position on the second shell 2. When the first shell 1 and the second shell 2 are assembled, the hook 21 engages with the latch 11 to achieve relative fixation between the first shell 1 and the second shell 2. In this embodiment, a first positioning pin 25 is fixedly provided at the edge of the second shell 2, and a first positioning hole 13 is provided at a corresponding position on the first shell 1. When the first shell 1 and the second shell 2 are assembled, the first positioning pin 25 is inserted into the first positioning hole 13, providing auxiliary positioning.

[0028] In this embodiment, a rotating shaft 12 is fixedly installed at the middle position inside the first housing 1, and a reel 3 is installed on the rotating shaft 12, allowing it to rotate freely along the rotating shaft 12. A winding shaft 31 is fixedly installed on the reel 3 facing the first housing 1, for winding cables. In use, the cable (not shown in the figure) is wound around the winding shaft 31. A coil spring (not shown in the figure) is installed in the cavity inside the winding shaft 31, which can be used to provide power for the cable when it retracts. In this embodiment, a first hanging interface is provided on the rotating shaft 12, and a second hanging interface is provided on the side wall of the winding shaft 31. One end of the coil spring is hung on the first hanging interface, and the other end is hung on the second hanging interface. When the cable is pulled out, it will pull the reel 3 to rotate, and at the same time, it will cause the coil spring to undergo elastic deformation. When retracting, the coil spring pulls the reel 3 to rotate, winding the cable around the winding shaft 31.

[0029] In this embodiment, the structure is used in power lines or data lines. It includes a first circuit board 4 and a second circuit board 5, which are interconnected for power transmission. In this embodiment, one or more conductive spring modules 53 are fixedly installed on the second circuit board 5. Each conductive spring module 53 has one or more conductive springs. A conductive ring (not shown in the figure) is provided at a corresponding position on the first circuit board 4. The conductive ring and the conductive spring abut against each other for power transmission. In this embodiment, three sets of conductive spring modules 53 are provided to effectively ensure the reliability of power transmission. In specific implementations, one, two, or more sets can also be provided. In specific implementations, this utility model structure can also be used in other occasions, and the corresponding structure can be adapted accordingly.

[0030] In this embodiment, the first circuit board 4 is fixedly installed together with the reel 3. The cable wound on the winding shaft 31 is electrically connected to the first circuit board 4. The second circuit board 5 is installed on the second housing 2. In this embodiment, a second positioning pin 26 is fixedly provided inside the second housing 2. A second positioning hole 52 is provided on the second circuit board 5. The second positioning pin 26 is inserted into the second positioning hole 52, which can realize the relative fixation between the second circuit board 5 and the second housing 2.

[0031] In this embodiment, a notch 24 is provided on the second housing 2. The notch 24 can be one, two, three or more as needed. Part of the second circuit board 5 is exposed at the notch 24 for connection with the outside, such as connection with a car charger connector. Different interfaces can be replaced according to different needs.

[0032] In this embodiment, the ball groove 22 is fixedly disposed inside the second housing 2, and the balls 23 are disposed within the ball groove 22. Two or more sets of ball grooves 22 and balls 23 are correspondingly provided. These sets of ball grooves 22 and balls 23 are evenly distributed along the center of the rotating shaft 12, with the center of the shaft as the center, to ensure more even force distribution and prevent misalignment during rotation. In this embodiment, three sets of ball grooves 22 and balls 23 are correspondingly provided; however, the specific number can be adjusted according to actual needs.

[0033] In this embodiment, the ball 23 is spherical, and the ball groove 22 is cylindrical. The inner diameter of the ball groove 22 is greater than or equal to the diameter of the ball 23, and the depth of the ball groove 22 is less than the diameter of the ball 23, so that part of it is exposed outside the ball groove 22. A through hole 51 is provided on the second circuit board 5 at the position corresponding to the ball groove 22. The ball groove 22 passes through the through hole 51, so that the ball 23 contacts the first circuit board 4, and the ball 23 can slide on the first circuit board 4.

[0034] In this embodiment, a push-pull structure is provided between the spool 3 and the second housing 2 to achieve relative self-locking. The spool 3 is provided with a locking groove 32, and a locking engagement position 33 is provided at a specific position in the locking groove 32. A locking post 27 is provided at a corresponding position on the second housing 2. The locking post 27 is located in the locking groove 32. When the cable is pulled out, the locking post 27 slides in the locking groove 32. When it rotates to the locking engagement position 33, the locking post 27 can be engaged at the locking engagement position 33 to achieve self-locking. When the cable is pulled again, the locking post 27 disengages from the locking engagement position 33 and slides into the locking groove 32, so that the cable can be easily retracted.

[0035] In this embodiment, a bearing 6 is mounted on the rotating shaft 12. The bearing 6 is positioned between the rotating shaft 12 and the scroll 3 to make their relative rotation smoother.

[0036] This invention features ball bearings on the outer casing, which transform the sliding friction between the casing and the circuit board into rolling friction, greatly improving the smoothness of wire extension and retraction. This ensures that both extension and retraction are smoother and prevents jamming.

Claims

1. A telescopic cable with a supporting sliding foot, characterized in that: The telescopic cable includes a housing and a spool (3). The spool (3) is installed inside the housing. A ball groove (22) is fixedly provided inside the housing. A ball (23) is provided in the ball groove (22). The ball (23) directly or indirectly abuts against the spool (3).

2. The telescopic line with supporting sliding foot according to claim 1, characterized in that: The outer shell includes a first shell (1) and a second shell (2) installed together. A slot (11) is provided at the upper edge of the first shell (1), and a hook (21) is fixedly provided at the corresponding position on the second shell (2). The hook (21) is engaged in the slot (11).

3. The telescopic line with supporting sliding foot according to claim 2, characterized in that: The second housing (2) is fixedly provided with a first positioning pin (25) at the edge position, and a first positioning hole (13) is opened at the corresponding position on the first housing (1), and the first positioning pin (25) is inserted into the first positioning hole (13).

4. The telescopic line with supporting sliding foot according to claim 2, characterized in that: A rotating shaft (12) is fixedly installed in the middle of the interior of the first housing (1), and a scroll (3) is installed on the rotating shaft (12).

5. The telescopic line with supporting sliding foot according to claim 2, characterized in that: The spool (3) is fixedly provided with a winding shaft (31) for winding cables on the side facing the first housing (1). The cables are wound on the winding shaft (31), and a coil spring is provided in the cavity inside the winding shaft (31).

6. The telescopic line with supporting sliding foot according to claim 2, characterized in that: A first circuit board (4) is fixedly installed on the reel (3). The cable wound on the winding shaft (31) is electrically connected to the first circuit board (4). A second circuit board (5) is installed on the second housing (2). One or more conductive spring modules (53) are fixedly installed on the second circuit board (5). One or more conductive springs are provided on the conductive spring module (53). A conductive ring is provided at the corresponding position on the first circuit board (4). The conductive ring and the conductive spring abut against each other.

7. The telescopic line with supporting sliding foot according to claim 6, characterized in that: The second housing (2) is fixedly provided with a second positioning pin (26), and the second circuit board (5) is provided with a second positioning hole (52), and the second positioning pin (26) is inserted into the second positioning hole (52).

8. The telescopic line with supporting sliding foot according to claim 6, characterized in that: The second housing (2) has a notch (24), and part of the second circuit board (5) is exposed at the notch (24).

9. The telescopic line with supporting sliding foot according to claim 2, characterized in that: The ball groove (22) is fixedly installed inside the second housing (2), and the ball (23) is installed in the ball groove (22). There are two or more sets of ball groove (22) and ball (23). The two or more sets of ball groove (22) and ball (23) are evenly distributed along the center of the rotating shaft (12) with the center of the rotating shaft (12) as the center.

10. The telescopic line with a supporting sliding foot according to claim 6, characterized in that: The ball (23) is spherical, the ball groove (22) is cylindrical, the inner diameter of the ball groove (22) is greater than or equal to the diameter of the ball (23), the depth of the ball groove (22) is less than the diameter of the ball (23), and a through hole (51) is provided on the second circuit board (5) at the position corresponding to the ball groove (22). The ball groove (22) passes through the through hole (51) so that the ball (23) contacts the first circuit board (4).

Images