Cable automatic telescopic adjusting structure and cable automatic telescopic adjuster

Abstract

The invention relates to a cable automatic telescopic adjusting structure and a cable automatic telescopic adjuster, the cable automatic telescopic adjusting structure comprises a cable box, a coil spring, a stator and a rotating assembly are arranged in the cable box, and the rotating assembly can circumferentially rotate relative to the stator; the rotating assembly comprises a rotor, a winding roll and a rotor connecting piece, the rotor is fixedly connected with the winding roll through the rotor connecting piece, the coil spring is arranged on the winding roll, the stator is arranged in inner holes of the coil spring and the winding roll and axially limited by the rotor and the winding roll, the inner end of the coil spring is fixed to the stator, and the outer end of the coil spring is fixed to the winding roll; the cable is wound on the winding roll, one end of the cable is a fixed end, the other end of the cable is a telescopic end, and the telescopic end penetrates out of a threading hole in the cable box. According to the invention, automatic telescopic adjustment of the cable within a certain length range is realized, the problem that cable parts are damaged when the cable reciprocates along with various mechanisms is effectively solved, the structure is simple, the practicability is high, and the working condition of reciprocating motion of a connecting mechanism can be met.

Description

Technical Field

[0001] This invention relates to the field of connector technology, specifically to an automatic cable extension and retraction adjustment structure and an automatic cable extension and retraction adjuster. Background Technology

[0002] Cables and connectors moving together in reciprocating motion with various mechanisms is a common application scenario in the connector industry. Currently, in some devices, cables are mainly retracted by mechanisms or manually. This process is not only inefficient, but also prone to tangling, damage, and breakage of cables, leading to electrical interconnection failures and serious consequences. Summary of the Invention

[0003] To address the aforementioned technical problems, this invention provides an automatic cable extension and retraction adjustment structure and an automatic cable extension and retraction adjuster. Through internal structural design, it enables automatic extension and retraction adjustment of the cable within a certain reciprocating motion range, and can adjust and control the cable release and retraction lengths. Simultaneously, it avoids cable tangling and breakage, effectively solving the problem of cable component damage during reciprocating motion with various mechanisms. The structure is simple, highly practical, and can meet the working conditions of reciprocating motion of connecting mechanisms.

[0004] This invention is specifically achieved through the following technical solution: An automatic cable retraction and adjustment structure proposed according to this invention includes a cable box, within which a coil spring, a stator, and a rotating assembly are disposed. The rotating assembly can rotate circumferentially relative to the stator. The rotating assembly includes a rotor, a winding reel, and a rotor connector. The rotor is fixedly connected to the winding reel via the rotor connector. The coil spring is disposed on the winding reel. The stator is disposed within the inner holes of the coil spring and the winding reel and is axially limited by the rotor and the winding reel. The inner end of the coil spring is fixed to the stator, and the outer end is fixed to the winding reel. The cable is wound on the winding reel, with one end of the cable being a fixed end and the other end being a retractable end, which passes through a wire hole on the cable box.

[0005] In the aforementioned automatic cable retraction and adjustment structure, a first bearing is installed between the stator and the winding reel, and a second bearing is installed between the stator and the rotor.

[0006] In the aforementioned automatic cable retraction and adjustment structure, a top cover is also fixed to the top of the cable box, and the stator is fixed to the top cover.

[0007] In the aforementioned automatic cable extension and retraction adjustment structure, the stator is also provided with a slot, and the inner end of the coil spring is fixed in the slot.

[0008] The aforementioned automatic cable retraction and adjustment structure has a cable groove on the outer wall of the cable reel for storing cables, a limit block at the bottom of the cable groove, a bottom cover connected to the bottom of the cable box, and a stop block on the inner wall of the bottom cover. The angle of rotation of the cable reel is limited by the cooperation of the limit block and the stop block.

[0009] The aforementioned automatic cable retraction and adjustment structure includes a rotor connector comprising a bottom fixed disc and a boss connected to the bottom fixed disc, with the winding reel fixed to the bottom fixed disc.

[0010] Furthermore, the stator includes a stator major diameter section and a stator minor diameter section. The stator minor diameter section is fitted outside the boss, and a first bearing is installed between the stator minor diameter section and the winding reel. Gaps are provided between the first bearing and the bottom fixed disc, between the stator and the bottom fixed disc, and between the outer wall of the boss and the inner hole of the stator.

[0011] Furthermore, the rotor includes a large-diameter section and a small-diameter section. The small-diameter section is fixed to the top of the boss by a second screw, and a second bearing is installed between the small-diameter section and the stator, with a gap between the second bearing and the boss. The large-diameter section is located on the top of the stator and has a gap between it and the top of the stator.

[0012] Furthermore, a step is provided at the top of the boss or the bottom of the small diameter section of the rotor, and the second screw mounting hole is provided on the step.

[0013] In the aforementioned automatic cable extension and retraction adjustment structure, a tail clip is also provided on the top of the rotor. The tail clip includes two detachably connected fixing plates with grooves. The fixed end of the cable passes through the center hole of the rotor connector and the center hole of the rotor and is fixed on the tail clip.

[0014] The present invention also proposes an automatic cable extension and retraction adjuster, which includes a connector and an automatic cable extension and retraction adjustment structure as described above, wherein the fixed end and the extension end of the cable in the automatic cable extension and retraction adjustment structure are both connected to the connector.

[0015] Compared with existing technologies, this invention has significant advantages and beneficial effects. Through the above technical solution, this invention achieves considerable technological advancement and practicality, and has broad application value, possessing at least the following advantages: (1) Through its internal structural design, this invention ensures that the cable and the internal structure of the cable box do not interfere with each other. When the cable is stretched outward, it drives the reel to rotate, causing the coil spring to generate elastic force. After the external force is removed, under the action of the coil spring's elastic force, the rotating component rotates in the opposite direction, causing the cable to automatically retract into the cable slot, thus realizing automatic cable unwinding and rewinding. The angle of rotation of the reel can be limited by the cooperation of the limiting block and the stop block, thereby controlling the cable unwinding and rewinding lengths. The unwinding and rewinding lengths can be adjusted by adjusting the diameter of the reel and the lengths of the limiting block and the stop block, expanding the application scope of this invention.

[0016] (2) The present invention has a groove on the stator, the inner end of the coil spring is fixed in the groove, and the outer end of the coil spring is fixed to the inner wall of the outer connector of the winding reel by a rivet, which saves space to the maximum extent and reduces the size of the device. The present invention has a rotating component in the cable box, and a tail clamp is set on the top of the rotor to fix the cable. When the winding reel rotates, it drives the rotating component to rotate, so that the fixed end of the cable rotates synchronously. This can avoid the cable fixed end from twisting or knotting during the winding and unwinding process, so that the cable always remains connected, improves the electrical interconnection performance, and is also easy to disassemble and install.

[0017] (3) The structure of this invention is reasonable. The rotor, stator and rotor connector are all provided with large diameter section and small diameter section. The circumferential rotation of the rotating component relative to the stator is realized by bearing. It is easy to install and disassemble, occupies little space, and can realize automatic extension and retraction adjustment of the cable within a certain length range. It can also avoid the cable from twisting, knotting and breaking. It effectively solves the problem of cable component damage during the reciprocating motion of the cable with various mechanisms, and ensures the reliability of electrical interconnection between the devices connected at both ends of the cable. The structure is simple, practical and can meet the working conditions of reciprocating motion of the connecting mechanism. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the automatic cable extension and retraction adjuster of the present invention.

[0019] Figure 2 This is a side sectional view of the automatic cable extension and retraction adjustment structure of the present invention.

[0020] Figure 3 This is an exploded view of the automatic cable extension and retraction adjuster of the present invention.

[0021] Figure 4 This is an exploded view of the internal structure of the cable box of the present invention.

[0022] Figure 5 This is a schematic diagram of the bottom structure of the cable box of the present invention.

[0023] [Component and Symbol Explanation]: 1-Cable box, 2-Cable, 2.1-Fixed end, 2.2-Telescopic end, 3-Top cover, 4-Bottom cover, 5-Tail clip, 5.1-Fixing plate, 6-Coil spring, 6.1-Inner end of coil spring, 6.2-Outer end of coil spring, 7-Rotor, 7.1-Large diameter section of rotor, 7.2-Small diameter section of rotor, 8-Wind reel, 8.1-Main body, 8.2-Outer connecting piece, 8.3-Wire groove, 9-Stator, 9.1-Large diameter section of stator, 9.2-Small diameter section of stator, 9.3-U-shaped slot, 9.4-Screw hole, 10-Rotor connecting piece, 10.1-Bottom fixing disc, 10.2-Boss, 11-First bearing, 12-Second bearing, 13-Step, 14-Limiting block, 15-Stop block, 16-First screw, 17-Second screw, 18-Third screw, 19-Spiral cable. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with specific embodiments and accompanying drawings. Obviously, the described features are only a part of the embodiments of the present invention, and not all of them. Therefore, the following detailed description of the present invention provided in the accompanying drawings is not intended to limit the scope of protection, but merely to illustrate selected embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments described below without inventive effort are within the scope of protection of the present invention.

[0025] It should be noted that the directional terms such as "upper" and "lower" used in this invention are based only on the orientation shown in the accompanying drawings and do not represent a limitation on this invention.

[0026] like Figure 1 and Figure 2 As shown, the automatic cable retraction adjustment structure provided by the present invention includes a cable box 1, a cable 2, a top cover 3, a bottom cover 4, a tail clip 5, a coil spring 6, a rotor 7, a winding reel 8, a stator 9, and a rotor connector 10. The coil spring 6, rotor 7, winding reel 8, stator 9, and rotor connector 10 are disposed inside the cable box, and the tail clip 5 is disposed on the top of the rotor. The rotor 7, winding reel 8, and rotor connector 10 form a rotating assembly, which can rotate circumferentially relative to the stator. The top and bottom of the rotor connector 10 are fixed to the rotor 7 and winding reel 8, respectively. The coil spring 6 is disposed on the winding reel 8, and the stator 9 is disposed in the inner holes of the coil spring and winding reel and is axially limited by the rotor and winding reel. The inner end of the coil spring is fixed to the stator, and the outer end is fixed to the winding reel. The cable 2 is wound on the winding reel, with one end being a fixed end 2.1 and the other end being a retractable end 2.2, which passes through a wire hole on the cable box. The top cover 3 and the bottom cover 4 are fixed to the top and bottom of the cable box respectively to form a housing.

[0027] Furthermore, the rotor connector 10 includes a bottom fixing disc 10.1 and a boss 10.2 connected to the inner diameter of the bottom fixing disc. The winding reel 8 includes a main body 8.1 and an outer connector 8.2 connected to the main body. The outer connector has a wire groove 8.3 on its outer periphery for storing cables. The inner wall of the main body has a first L-shaped groove for mounting a first bearing 11. The outer diameter of the bottom fixing disc 10.1 is smaller than the inner diameter of the outer connector 8.2, so that the bottom fixing disc 10.1 is located at the bottom of the winding reel and in the inner hole of the outer connector. The bottom fixing disc is fixed to the bottom of the winding reel main body by a first screw 16.

[0028] The stator 9 includes a stator large diameter section 9.1 and a stator small diameter section 9.2. The stator large diameter section has a second L-shaped groove in its inner hole, and a first bearing 11 is forcibly installed on the outer periphery of the stator small diameter section. The stator is fitted onto the outside of the boss of the rotor connector through the inner hole of its small diameter section, and the outer ring of the first bearing assembled on the outer periphery of its small diameter section is forcibly installed in the first L-shaped groove on the inner side wall of the winding reel, so that the winding reel 8 can rotate circumferentially relative to the stator 9.

[0029] The coil spring 6 is located at the top of the winding reel and between the outer connector 8.2 and the stator large diameter section 9.1. The stator large diameter section is also provided with a U-shaped groove 9.3. The inner end 6.1 of the coil spring is bent into an approximately trapezoidal shape and the bent part is fixed in the U-shaped groove 9.3. The cooperation between the U-shaped groove 9.3 and the bent part of the inner end of the coil spring can prevent the inner end of the coil spring from falling off. The outer end 6.2 of the coil spring is fixed to the inner wall of the outer connector of the winding reel by rivets.

[0030] The rotor 7 includes a large-diameter section 7.1 and a small-diameter section 7.2. A second bearing 12 is rigidly mounted on the outer periphery of the small-diameter section. The small-diameter section is fixed to the top of the boss 10.2 of the rotor connector, and the outer ring of the second bearing is rigidly mounted in the second L-shaped groove in the inner hole of the large-diameter section of the stator, thereby allowing the rotor to rotate circumferentially relative to the stator. After the rotor is fixed to the rotor connector, the large-diameter section 7.1 is located on top of the large-diameter section 9.1 of the stator, and there is a gap between the large-diameter section and the top of the stator to facilitate rotor rotation. The top of the boss of the rotor connector and the bottom of the small-diameter section of the rotor are provided with second screw mounting holes, and the small-diameter section of the rotor is fixed to the boss by second screws 17.

[0031] Furthermore, to avoid affecting the circumferential rotation of the rotor and rotor connector relative to the stator, a step 13 is provided at the top of the boss or the bottom of the rotor's small diameter section. The second screw mounting hole is located on the step. After the rotor is fixed to the boss, there is a gap between the top edge of the boss and the bottom of the second bearing. At the same time, there are also gaps between the first bearing and the bottom fixed disk, between the stator and the bottom fixed disk, and between the outer wall of the boss and the inner hole of the stator.

[0032] The top of the stator's large-diameter section is also provided with screw holes 9.4. The top cover is located on the top of the cable box, and the top cover is fixed to the cable box and the top of the stator's large-diameter section by a third screw 18. After the top cover is installed, there is a gap between the top of the coil spring and the top cover to facilitate the extension and rotation of the coil spring. The rotor, rotor connector, and winding reel form a rotating assembly. After the top cover is fixed to the cable box and the stator, the stator provides axial fixation for the rotating assembly, and the first and second bearings allow the rotor assembly to rotate circumferentially relative to the stator.

[0033] The tail clip 5 is located on the top of the rotor. The cable is wound in the groove 8.3 of the outer connector of the reel. One end of the cable passes through the center hole of the rotor connector boss and the center hole of the rotor and is fixed on the tail clip as the fixed end 2.1. The other end passes through the wire hole on the side wall of the cable box along the tangent direction of the circular reel as the telescopic end 2.2. The telescopic end can stretch to release the cable length or retract to retract the cable.

[0034] exist Figure 1 In the described embodiment, the tail clip 5 includes two detachably connected fixing plates 5.1. The fixing plates have grooves, and the cable fixing end passes through the through hole formed by the two fixing plates' grooves. The two fixing plates are fixed with screws to clamp the cable fixing end, thus securing the cable. However, this cable fixing method is only one embodiment of the present invention and is not considered a limitation thereof. Other cable fixing mechanisms can also be used in other embodiments.

[0035] Furthermore, to prevent the cable fixing end from rotating during rotor rotation and causing tangling or knotting, a spiral cable 19 can be installed at the cable fixing end, such as... Figure 1 As shown, the spiral cable is similar to a spiral telephone cord, and has a certain degree of elasticity, which can effectively prevent tangling and knotting.

[0036] To prevent the cable from getting tangled and knotted in the reel during automatic cable reel winding, clamps can be further installed in the reel's groove to secure the cable.

[0037] In order to control the length of cable unwinding and rewinding, a limit block 14 is provided at the bottom of the outer connector of the reel (i.e., the bottom of the cable groove). Correspondingly, a stop block 15 is provided on the inner wall of the bottom cover 4. The angle of rotation of the reel is limited by the cooperation of the limit block and the stop block, thereby controlling the length of cable unwinding and rewinding.

[0038] The automatic cable retraction and adjustment structure designed in this invention ensures that the length of cable released each time guarantees that the circumferential rotation of the cable reel does not exceed one revolution. The cable reel rotates counterclockwise during unloading, defined as the first direction. When the cable is unloaded from the retraction end, as the cable is stretched, the reel rotates circumferentially along the first direction. The coil spring generates elastic potential energy with the rotation of the reel, providing a preload force to the reel opposite to the first direction. The rotation of the reel drives the rotor connector and the rotor to rotate circumferentially relative to the stator along the first direction. The cable fixing end at the top of the rotor rotates synchronously, effectively preventing the cable in the cable box from tangling or knotting during unloading. When the reel rotates to the point where one end of the limiting block contacts one end of the stop block, the stop block prevents the reel from continuing to rotate in the same direction by blocking the limiting block, thus ensuring a constant unloaded length.

[0039] When winding up the cable, the external force is removed, and under the elastic force of the coil spring, the reel rotates in the opposite direction to the first direction (i.e., clockwise), causing the rotor connector and the rotor to rotate synchronously. The cable is automatically retracted into the groove of the reel. When the other end of the limit block contacts the other end of the stop block, the stop block stops the limit block, thereby preventing the reel from continuing to rotate and ensuring a constant winding length.

[0040] Furthermore, this invention can achieve adjustment and control of the take-up and release lengths by designing reels of different diameters. Alternatively, it can achieve adjustment of the take-up and release lengths by designing limit blocks and stop blocks of different lengths on the same automatic cable extension and retraction adjustment structure or device. Specifically, on reels of the same diameter, when the axial lengths of the limit blocks and stop blocks are relatively short, the take-up and release lengths of the cable are relatively long. When the axial lengths of the limit blocks and stop blocks increase, the take-up and release lengths of the cable are relatively reduced, thereby achieving adjustment of the take-up and release lengths. To expand the scope of application, the limit blocks and stop blocks are detachably fixed to the bottom of the outer connector of the reel and the inner wall of the bottom cover, respectively. When it is necessary to adjust the take-up and release lengths, simply replace the limit blocks and stop blocks of different lengths.

[0041] By means of the above technical solution, the present invention also provides an automatic cable extension and retraction adjuster, which includes a connector and the automatic cable extension and retraction adjustment structure as described above. Both the fixed end and the extension end of the cable in the automatic cable extension and retraction adjustment structure are connected to the connector. The above-mentioned automatic cable extension and retraction adjustment structure and adjuster are mainly applied to scenarios where the fixed end and extension end of the cable reciprocate within a short distance. When the fixed end and extension end of the cable move away from each other, the cable is automatically released; when the fixed end and extension end move closer together, the cable is automatically retracted. Within the reciprocating range, the cable release length and retraction length do not exceed one revolution of the cable reel, and the rotation angle of the limiting block 14 is less than 360°. The present invention can realize automatic cable release and automatic cable retraction, and can flexibly adjust the release and retraction lengths. During the release and retraction process, the cable will not tangle or knot, and will not be damaged, ensuring the stability of the electrical interconnection between the devices connected at both ends of the cable.

[0042] The above description is merely an embodiment of the present invention and is not intended to limit the present invention in any way. The present invention can also have other embodiments based on the above structure and function, which will not be listed hereafter. Therefore, any simple modifications, equivalent changes, and alterations made by those skilled in the art to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. An automatic cable extension and retraction adjustment structure, characterized in that, The cable box includes a cable box (1), which contains a coil spring (6), a stator (9), and a rotating assembly. The rotating assembly can rotate circumferentially relative to the stator. The rotating assembly includes a rotor (7), a winding reel (8), and a rotor connector (10). The rotor (7) is fixedly connected to the winding reel through the rotor connector (10). The coil spring is mounted on the winding reel. The stator (9) is mounted in the inner holes of the coil spring and the winding reel and is axially limited by the rotor (7) and the winding reel (8). The inner end of the coil spring is fixed to the stator, and the outer end is fixed to the winding reel. The cable is wound on the winding reel. One end of the cable is a fixed end, and the other end is a telescopic end. The telescopic end passes through the cable hole on the cable box.

2. The automatic cable telescopic adjustment structure as described in claim 1, characterized in that, A first bearing (11) is installed between the stator and the winding reel, and a second bearing (12) is installed between the stator and the rotor.

3. The automatic cable extension and retraction adjustment structure as described in claim 1, characterized in that, The top of the cable box is fixed with a top cover (3), and the stator is fixedly connected to the top cover.

4. The automatic cable telescopic adjustment structure as described in claim 1, characterized in that, The stator is provided with a slot (9.3), and the inner end of the coil spring is fixed in the slot.

5. The automatic cable telescopic adjustment structure as described in claim 1, characterized in that, The outer wall of the cable reel is provided with a cable groove (8.3) for storing cables. A limit block (14) is provided at the bottom of the cable groove. A bottom cover (4) is connected to the bottom of the cable box. A stop block (15) is provided on the inner wall of the bottom cover. The angle of rotation of the cable reel is limited by the cooperation of the limit block and the stop block.

6. The automatic cable telescopic adjustment structure as described in claim 1, characterized in that, The rotor connector (10) includes a bottom fixed disc (10.1) and a boss (10.2) connected to the bottom fixed disc, and the winding reel is fixed to the bottom fixed disc.

7. The automatic cable telescopic adjustment structure as described in claim 6, characterized in that, The stator includes a stator major diameter section (9.1) and a stator minor diameter section (9.2). The stator minor diameter section is fitted outside the boss (10.2), and a first bearing (11) is installed between the stator minor diameter section and the winding reel. There are gaps between the first bearing and the bottom fixed disc, between the stator and the bottom fixed disc, and between the outer wall of the boss and the inner hole of the stator.

8. The automatic cable telescopic adjustment structure as described in claim 6, characterized in that, The rotor includes a large diameter section (7.1) and a small diameter section (7.2). The small diameter section is fixed to the top of the boss (10.2) by a second screw, and a second bearing (12) is installed between the small diameter section and the stator. There is a gap between the second bearing and the boss. The large diameter section is located on the top of the stator and there is a gap between it and the top of the stator.

9. The automatic cable telescopic adjustment structure as described in claim 8, characterized in that, A step (13) is provided at the top of the boss or the bottom of the small diameter section of the rotor, and the second screw mounting hole is provided on the step.

10. The automatic cable telescopic adjustment structure as described in claim 1, characterized in that, A tail clip (5) is provided on the top of the rotor. The tail clip includes two detachably connected fixing plates (5.1). The fixing plates are provided with grooves. The fixed end of the cable passes through the center hole of the rotor connector and the center hole of the rotor and is fixed on the tail clip.

11. An automatic cable retraction adjuster, characterized in that, The cable includes an automatic cable retraction and adjustment structure and a connector. The automatic cable retraction and adjustment structure is the cable retraction and adjustment structure according to any one of claims 1-10, and the connector is connected to both the fixed end and the retraction end of the cable.

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