A winding mechanism conductive shaft with a quick-release structure and a charging cable storage mechanism thereof

Abstract

A quick-assembly winding mechanism conductive shaft and its charging cable storage mechanism are disclosed, relating to the field of automatic charging cable storage technology. This invention addresses the problem of complex installation structures for conductive brushes and conductive rings in existing automatic winding devices, which are inconvenient for production and assembly. The quick-assembly winding mechanism conductive shaft includes a fixed shaft and a bushing. Two or more conductive rings are sleeved on the fixed shaft, each with an L-shaped positioning pin. The side wall of the fixed shaft has two or more axially arranged positioning grooves, each with a different longitudinal length. The connecting section of the positioning pin, which connects to the conductive ring, is vertically inserted into the positioning groove and positioned in conjunction with the side wall of the groove end. The conductive rings sleeved on the fixed shaft are spaced apart under the positioning of the corresponding positioning groove and the connecting section of the positioning pin. The bushing has conductive brushes that are electrically in contact with each conductive ring. This design enables rapid assembly, simplifies the assembly of the winding mechanism conductive shaft, improves assembly efficiency, and reduces production costs.

Description

Technical Field

[0001] This utility model relates to the field of automatic charging cable storage structure technology, and in particular to the improvement of the conductive shaft structure of the charging cable storage mechanism for charging mobile phones and other electronic products. Background Technology

[0002] To address the issues of messy storage and inconvenience in carrying charging cables, existing solutions fall into two categories: one is a manual winding device, which is cumbersome to operate and inefficient; the other is an automatic winding and storage device, which uses a coil spring winding mechanism and a ratchet self-locking mechanism inside the housing to achieve automatic winding and self-locking of the cable after it is pulled out.

[0003] To ensure uninterrupted electrical signal transmission during the rotation of the winding reel, automatic winding devices typically incorporate a conductive brush and conductive ring structure between the reel's side and the housing. The conductive brush elastically abuts against the conductive ring surface, forming a sliding electrical connection. However, this design has significant drawbacks in practical use: when the user quickly pulls out the wire, the winding reel vibrates violently, and in inferior products, the conductive brush and conductive ring are prone to detaching, leading to circuit interruption and affecting charging or data transmission stability. Furthermore, existing designs often use low-elasticity conductive brushes to avoid friction between the brush and the ring hindering the coil spring's winding, resulting in a small contact area. This not only limits the current flow but also shortens the lifespan of the winding device.

[0004] Furthermore, the existing automatic winding devices have complex installation structures for conductive brushes and conductive rings, which is not conducive to production and assembly. Utility Model Content

[0005] In summary, the purpose of this utility model is to address the technical shortcomings of the existing conductive brush and conductive ring structures in automatic winding devices, and to propose a quick-assembly structure for the conductive shaft of the winding mechanism and its charging cable storage mechanism.

[0006] To address the technical shortcomings of this utility model, the following technical solution is adopted:

[0007] A quick-release winding mechanism conductive shaft includes a fixed shaft and a bushing movably fitted onto the fixed shaft. The fixed shaft has two or more conductive rings fitted onto it, each with an L-shaped positioning pin. The sidewall of the fixed shaft has two or more axially arranged positioning grooves, each with a different longitudinal length. Each positioning groove accommodates a positioning pin of one conductive ring. A connecting segment of the positioning pin, connected to the conductive ring, is vertically inserted into the positioning groove and positioned in conjunction with the sidewall of the end of the positioning groove. A lead-out segment perpendicular to the connecting segment is embedded in the positioning groove and leads out from the end of the fixed shaft. The conductive rings fitted onto the fixed shaft are spaced apart under the positioning of the connecting segments of the corresponding positioning grooves and positioning pins. The bushing has conductive brushes that make elastic triboelectric contact with each conductive ring.

[0008] The technical features that further define the present utility model include: the bushing includes a bushing body and a package body that are longitudinally spliced; the bushing body is provided with two or more sets of conductive brush mounting grooves corresponding to each conductive ring on the fixed shaft, the groove opening of the conductive brush mounting groove is located on the connecting surface of the bushing body and the package body, the conductive brush mounting groove is provided with an arc-shaped conductive brush inserted through the groove opening of the conductive brush mounting groove, the inner sidewall of the arc-shaped conductive brush is in elastic frictional electrical contact with the conductive ring, and the two ends of the arc-shaped conductive brush elastically abut against the bottom of the conductive brush mounting groove.

[0009] The connecting surface of the bushing body is provided with a connecting groove, and the encapsulation body is provided with a connecting block corresponding to the connecting groove. The bushing body is assembled and fastened in the connecting groove on the bushing body by locking members inserted in the connecting block of the encapsulation body.

[0010] The bow-shaped conductive brush uses an arc-shaped contact section to make elastic triboelectric contact with the conductive ring.

[0011] The two ends of the bow-shaped conductive brush are flipped 180 degrees and then elastically abut against the bottom of the conductive brush mounting groove.

[0012] The bushing body is provided with a conductive brush lead-out hole that communicates with the conductive brush mounting groove; the middle section of the bow-shaped conductive brush is exposed outside the bushing body through the conductive brush lead-out hole.

[0013] A charging cable storage mechanism includes an upper shell, a lower shell, a charging cable, and a coiled spring winding mechanism. The mechanism is characterized by further including a winding mechanism conductive shaft with a quick-release structure as described above. The upper shell and lower shell are fixedly connected to both ends of the fixed shaft, respectively. The charging cable is wound and stored on a bushing, and the charging cable is welded to a conductive brush. A wheel is fixedly connected to one end of the bushing, and the coiled spring winding mechanism is installed on the side of the wheel opposite to the bushing. A locking clip is provided on the inner side of the upper shell to engage with and lock the coiled spring winding mechanism.

[0014] The technical features that further define the charging cable storage mechanism of this utility model include:

[0015] The charging cable end is fixed to the package body by injection molding; the positioning pins are led out from the lower shell and soldered to the PCB board on the outer surface of the lower shell.

[0016] The coil spring take-up mechanism includes a coil spring receiving groove located at the center of the wheel surface, and a locking groove located around the coil spring receiving groove; a coil spring is provided inside the coil spring receiving groove, one end of which is connected to a fixed shaft, and the other end is connected to the groove wall of the coil spring receiving groove; the locking groove includes an annular groove body, in which one or more guide locking blocks and one or more guide blocks are provided, the guide locking blocks and guide blocks are alternately distributed in the annular groove body, and the annular groove body is divided into an inner ring and an outer ring; wherein: the front end of the guide locking block is provided with a locking pin to prevent the winding wheel from... The V-shaped groove rotates clockwise under the action of the coil spring force; the guide locking block also includes an outer side that guides the locking pin from the inner ring to the outer ring when the winding wheel rotates counterclockwise; the guide block includes a locking pin that, when the winding wheel rotates counterclockwise, guides the locking pin that has disengaged from the V-shaped groove to the tail end of the inner ring; the outer wall of the inner ring is provided with an arc-shaped inner protrusion that, when the winding wheel rotates counterclockwise, guides the locking pin in the inner ring to the outer side of the guide locking block; the inner wall of the outer ring is provided with an arc-shaped outer protrusion that, when the winding wheel rotates counterclockwise, guides the locking pin in the outer ring to the position where the V-shaped groove can engage when rotating clockwise.

[0017] The locking mechanism includes a sliding seat and a locking pin vertically fixed to the sliding seat; the inner side of the upper shell is provided with a T-shaped groove, the sliding seat is located in the T-shaped groove, and the locking pin extends from the T-shaped groove to the coil spring winding mechanism; a locking fastener is also provided between the upper shell and the lower shell via a fixed shaft.

[0018] The beneficial effects of this utility model are as follows: the conductive ring and the fixed shaft of this utility model can be positioned and fixed without a complicated injection molding process; the conductive brush on the bushing also does not require a complicated injection molding process for fixed installation. Both the conductive ring and the conductive brush adopt a positioning groove structure to achieve rapid assembly, simplifying the assembly of the conductive shaft of the winding mechanism, improving assembly efficiency, and reducing production costs. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the charging cable storage mechanism of this utility model.

[0020] Figure 2 This is an exploded structural diagram of the charging cable storage mechanism of this utility model.

[0021] Figure 3 This is an exploded view of the charging cable storage mechanism of this utility model from another angle.

[0022] Figure 4 This is a schematic diagram of the internal structure of the charging cable storage mechanism of this utility model.

[0023] Figure 5 for Figure 4Schematic diagram of structures at opposite angles.

[0024] Figure 6 This is an exploded structural diagram of the conductive shaft of the winding mechanism in the quick-assembly structure of this utility model.

[0025] Figure 7 This is an exploded view of the conductive shaft of the winding mechanism in the quick-assembly structure of this utility model from another angle.

[0026] Figure 8 This is an exploded view of the fixed shaft structure of this utility model;

[0027] Figure 9 This is an exploded structural diagram of the fixed shaft of this utility model from another angle. Detailed Implementation

[0028] The structure of this utility model will be further described below with reference to the accompanying drawings and preferred embodiments.

[0029] Reference Figures 1 to 9 As shown in the figure, the conductive shaft of the winding mechanism of the present invention includes a fixed shaft 1 and a bushing 2 movably sleeved on the fixed shaft 1; two or more conductive rings 11 are sleeved on the fixed shaft 1. Taking five conductive rings 11 as an example, in the specific implementation, if the data signal transmission of the charging cable is not considered, only two conductive rings 11 can be used to realize the charging power transmission; in order to ensure that the conductive rings 11 on the fixed shaft 1 are separated and that there is no short circuit between adjacent conductive rings 11, each conductive ring 11 is provided with an L-shaped positioning pin 12. The L-shaped positioning pin 12 and the conductive ring 11 can be connected by welding or by a copper sheet stamping integral structure; the side wall of the fixed shaft 1 is provided with two or more axially arranged positioning grooves 1 The longitudinal length of each positioning groove 10 is different, which determines the different positions of each conductive ring 11 on the fixed shaft 1. Each positioning groove 10 accommodates a positioning pin 12 of a conductive ring 11. The connecting segment of the positioning pin 12 connected to the conductive ring 11 is inserted vertically into the positioning groove and positioned in cooperation with the end sidewall of the positioning groove 10. The lead-out segment perpendicular to the connecting segment is embedded in the positioning groove 10 and led out from the end of the fixed shaft 1. In order to better limit the connecting segment of the positioning pin 12, the positioning groove 10 is a dovetail groove structure, and the positioning pin 12 can only be inserted into the positioning groove 10 from the end of the fixed shaft 1. The conductive rings 11 sleeved on the fixed shaft 1 are spaced apart under the positioning of the connecting segment of the corresponding positioning groove 10 and the positioning pin 12.

[0030] The bushing 2 is provided with conductive brushes that make elastic triboelectric contact with each conductive ring 11. In specific implementation, in order to facilitate the rapid assembly of the conductive brushes with the bushing 2, the present invention adopts the following solution: the bushing 2 includes a longitudinally spliced ​​bushing body 21 and a package body; it is equivalent to longitudinally cutting a complete bushing into two parts. The bushing body 21 is provided with two or more sets of conductive brush mounting grooves 211 corresponding to each conductive ring 11 on the fixed shaft 1. The opening of the conductive brush mounting groove is located on the connecting surface of the bushing body 21 and the package body 22. The conductive brush mounting groove 211 is provided with an arc-shaped conductive brush 23 inserted through the opening of the conductive brush mounting groove. The inner sidewalls of the arc-shaped conductive brush 23 make elastic triboelectric contact with the conductive ring 11, and the two ends of the arc-shaped conductive brush 23 elastically abut against the bottom of the conductive brush mounting groove 211.

[0031] In order to increase the contact area between the bow-shaped conductive brush 23 and the conductive ring 11 and to accommodate large currents, the bow-shaped conductive brush 23 adopts an arc-shaped contact section 231 to make elastic triboelectric contact with the conductive ring 11.

[0032] In order to make the bow-shaped conductive brush 23 have better elasticity to maintain elastic triboelectric contact with the conductive ring 11, the two ends of the bow-shaped conductive brush 23 are rotated 180 degrees and elastically abut against the bottom of the conductive brush mounting groove 211.

[0033] The bushing body 21 has a connecting groove 210 on its connecting surface, and the package 22 has a connecting block 220 corresponding to the connecting groove 210. The bushing body 21 is assembled and fastened to the package by locking members inserted in the connecting blocks of the package. The locking member can be a rivet, which limits the separation of the package 22 from the bushing body 21, thereby preventing the bow-shaped conductive brush 23 from falling out of the conductive brush mounting groove 211.

[0034] To facilitate the welding of the bow-shaped conductive brush 23 to the charging cable, the bushing body 21 is provided with a conductive brush lead-out hole 212 that communicates with the conductive brush mounting groove 211; the middle section of the bow-shaped conductive brush 23 protrudes outside the bushing body 21 through the conductive brush lead-out hole 212 for welding of the charging cable.

[0035] This invention discloses a charging cable storage mechanism, comprising an upper shell 3, a lower shell 4, a charging cable 5, and a coil spring winding mechanism 6. The upper shell 3 and lower shell 4 together form a housing containing a winding mechanism conductive shaft with a quick-release structure. This conductive shaft provides a winding shaft for the charging cable. The coil spring winding mechanism 6 is fixedly installed with a bushing 2 of the conductive shaft of the quick-release structure. After the charging cable 5 is pulled out of the housing, the bushing 2 can be driven to rotate in the opposite direction, allowing the charging cable 5 to be automatically wound and stored. The specific structure is as follows:

[0036] The fixed shaft 1 is fixedly connected to the upper shell 3 and the lower shell 4 at both ends respectively. To further improve product reliability and prevent the upper shell 3 and the lower shell 4 from loosening during use, a fixing component is also provided between the upper shell 3 and the lower shell 4, which can be locked by the fixed shaft 1. Specifically, it can be locked by screws or rivets. The charging cable 5 is wound and stored on the bushing 2. The charging cable 5 is welded to the conductive brush that is exposed on the bushing body 21 through the conductive brush lead-out hole 212. In order to prevent the charging cable 5 from breaking and falling off at the welded joint with the conductive brush when the charging cable 5 is pulled, the tail end of the charging cable 5 is fixedly molded to the package body 22. One end of the bushing 2 is fixedly connected to the wheel 7. The coil spring winding mechanism is installed on the side of the wheel opposite to the bushing 2. The inner side of the upper shell 3 is provided with a locking clip 8 that cooperates with the coil spring winding mechanism to lock. The coiling spring take-up mechanism 6 specifically includes a coiling spring receiving groove 61 located at the center of the surface of the wheel 7, and a locking groove 62 located around the coiling spring receiving groove 61; a coiling spring 63 is provided inside the coiling spring receiving groove 61, one end of the coiling spring 63 is connected to the fixed shaft 1, and the other end is connected to the groove wall of the coiling spring receiving groove 61; the locking groove 62 includes an annular groove body, in which one or more guide locking blocks and one or more guide blocks are provided, and the guide locking blocks and guide blocks are alternately distributed in the annular groove body, dividing the annular groove body into an inner ring and an outer ring; wherein: the front end of the guide locking block is provided with a... The locking pin engages with a V-shaped groove to prevent the winding wheel from rotating clockwise under the force of the coil spring; the guide locking block also includes an outer side that guides the locking pin from the inner ring to the outer ring when the winding wheel rotates counterclockwise; the guide block includes a locking pin that, when the winding wheel rotates counterclockwise, guides the locking pin that has disengaged from the V-shaped groove to the tail end of the inner ring; the outer wall of the inner ring is provided with an arc-shaped inner protrusion that, when the winding wheel rotates counterclockwise, guides the locking pin in the inner ring to the outer side of the guide locking block; the inner wall of the outer ring is provided with an arc-shaped outer protrusion that, when the winding wheel rotates counterclockwise, guides the locking pin in the outer ring to the position where the V-shaped groove can engage when rotating clockwise. The working principle of the coil spring take-up mechanism 6 is the same as the structural principle disclosed in the applicant's prior utility model patent application number: CN2024233051060. This structure is not the main inventive point of this application and will not be explained in detail here. The difference lies in the mounting structure of the locking clip 8 on the housing. The locking clip 8 includes a circular sliding seat and a locking pin vertically fixed to the sliding seat. The inner side of the upper shell 3 is provided with a T-shaped groove 31, and the sliding seat is disposed in the T-shaped groove 31. The locking pin extends from the T-shaped groove to the locking groove 62 of the coil spring take-up mechanism. The positioning pin 21 of this invention leads out of the lower shell 4 and is soldered to the PCB board on the outer surface of the lower shell 4.

[0037] In summary, the conductive brush and conductive ring of this utility model are both fixedly installed using a slot structure, which facilitates rapid assembly, ensures stability and reliability, improves production efficiency, and saves costs.

Claims

1. A conductive shaft for a winding mechanism with a quick-release structure, comprising a fixed shaft and a bushing movably sleeved on the fixed shaft; characterized in that: The fixed shaft is fitted with two or more conductive rings, each with an L-shaped positioning pin. The sidewall of the fixed shaft has two or more axially arranged positioning grooves, each with a different longitudinal length. Each positioning groove accommodates a positioning pin of one conductive ring. The connecting segment of the positioning pin, which connects to the conductive ring, is vertically inserted into the positioning groove and positioned in conjunction with the sidewall of the end of the positioning groove. The lead-out segment, perpendicular to the connecting segment, is embedded in the positioning groove and leads out from the end of the fixed shaft. The conductive rings fitted onto the fixed shaft are spaced apart under the positioning of the connecting segments of the corresponding positioning grooves and positioning pins. The bushing is equipped with conductive brushes that make elastic frictional electrical contact with each conductive ring.

2. The conductive shaft of the winding mechanism of the quick-assembly structure according to claim 1, characterized in that: The bushing includes a bushing body and a package body that are longitudinally spliced ​​together. The bushing body is provided with two or more sets of conductive brush mounting grooves corresponding to each conductive ring on the fixed shaft. The opening of the conductive brush mounting groove is located on the connecting surface where the bushing body and the package body fit together. The conductive brush mounting groove is provided with an arc-shaped conductive brush inserted through the opening of the conductive brush mounting groove. The inner sidewalls of the arc-shaped conductive brush are in elastic frictional electrical contact with the conductive ring. The two ends of the arc-shaped conductive brush elastically abut against the bottom of the conductive brush mounting groove.

3. The conductive shaft of the winding mechanism of the quick-assembly structure according to claim 2, characterized in that: The connecting surface of the bushing body is provided with a connecting groove, and the encapsulation body is provided with a connecting block corresponding to the connecting groove. The bushing body is assembled and fastened in the connecting groove on the bushing body by locking members inserted in the connecting block of the encapsulation body.

4. The conductive shaft of the winding mechanism of the quick-assembly structure according to claim 2, characterized in that: The bow-shaped conductive brush uses an arc-shaped contact section to make elastic triboelectric contact with the conductive ring.

5. The conductive shaft of the winding mechanism of the quick-assembly structure according to claim 2, characterized in that: The two ends of the bow-shaped conductive brush are flipped 180 degrees and then elastically abut against the bottom of the conductive brush mounting groove.

6. The conductive shaft of the winding mechanism of the quick-assembly structure according to claim 2, characterized in that: The bushing body is provided with a conductive brush lead-out hole that communicates with the conductive brush mounting groove; the middle section of the bow-shaped conductive brush is exposed outside the bushing body through the conductive brush lead-out hole.

7. A charging cable storage mechanism, comprising an upper shell, a lower shell, a charging cable, and a coiled spring cable winding mechanism, characterized in that, It also includes a winding mechanism conductive shaft with the quick-release structure as described in any one of claims 1 to 6; the two ends of the fixed shaft are respectively fixedly connected to the upper shell and the lower shell; the charging cable is wound and stored on the bushing, and the charging cable is welded to the conductive brush; one end of the bushing is fixedly connected to a wheel, and the coil spring winding mechanism is installed on the side opposite to the bushing; the inner side of the upper shell is provided with a locking member that cooperates with the coil spring winding mechanism to lock; the locking member includes a sliding seat and a pin vertically fixed on the sliding seat.

8. A charging cable storage mechanism according to claim 7, characterized in that: The charging cable end is fixed to the package body by injection molding; the positioning pins are led out from the lower shell and soldered to the PCB board on the outer surface of the lower shell.

9. A charging cable storage mechanism according to claim 7, characterized in that: The coil spring take-up mechanism includes a coil spring receiving groove located at the center of the wheel surface, and a locking groove located around the coil spring receiving groove; a coil spring is provided inside the coil spring receiving groove, one end of which is connected to a fixed shaft, and the other end is connected to the groove wall of the coil spring receiving groove; the locking groove includes an annular groove body, in which one or more guide locking blocks and one or more guide blocks are provided, the guide locking blocks and guide blocks are alternately distributed in the annular groove body, and the annular groove body is divided into an inner ring and an outer ring; wherein: the front end of the guide locking block is provided with a locking pin to prevent the winding wheel from... The V-shaped groove rotates clockwise under the action of the coil spring force; the guide locking block also includes an outer side that guides the locking pin from the inner ring to the outer ring when the winding wheel rotates counterclockwise; the guide block includes a locking pin that, when the winding wheel rotates counterclockwise, guides the locking pin that has disengaged from the V-shaped groove to the tail end of the inner ring; the outer wall of the inner ring is provided with an arc-shaped inner protrusion that, when the winding wheel rotates counterclockwise, guides the locking pin in the inner ring to the outer side of the guide locking block; the inner wall of the outer ring is provided with an arc-shaped outer protrusion that, when the winding wheel rotates counterclockwise, guides the locking pin in the outer ring to the position where the V-shaped groove can engage when rotating clockwise.

10. A charging cable storage mechanism according to claim 7, characterized in that: The inner side of the upper shell is provided with a T-shaped sliding groove, the sliding seat is located in the T-shaped sliding groove, and the locking pin extends from the T-shaped sliding groove to the coil spring winding mechanism; a locking fastener is also provided between the upper shell and the lower shell via a fixed shaft.

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