Single-pull cord charger

Abstract

The utility model discloses a single pull line charger, it includes shell, charging wire, winding device, charging circuit board, turnover plug, magnet and magnetic attraction joint. Turnover plug is integrated in the corner of shell, can turn over and expose when using, can be retracted and form hidden structure when not using, effectively solve the problem of traditional input end's exposure. A fixed storage point is formed through magnet and magnetic attraction joint combination. When not using, magnetic attraction joint can be firmly adsorbed in the storage part of shell, so that turnover plug and magnetic attraction joint are properly fixed and protected when being stored, effectively solve the problem of traditional structure's input end and output end because of no positioning structure and appear scratch, entangle, pull and other problems, also will not shake and scatter, greatly reduce the risk of poor contact and broken line, significantly improve the service life and reliability of product, in addition, the whole structure is simple, the body is small and exquisite, and the appearance of charger after storage is neat, beautiful, convenient to carry and use.

Description

Technical Field

[0001] This utility model relates to the field of charger technology, specifically to a single-wire charger. Background Technology

[0002] Currently, with the continuous development of technology and the improvement of people's living standards, mobile electronic products such as mobile phones and iPads have become indispensable devices in people's lives and work. As the frequency of use of these devices increases, the number of times they need to be charged also increases, and they all need to be charged using an external power source. Existing chargers generally include a charging head and a charging cable, and in order to meet the needs of users as much as possible, existing charging cables are generally quite long. As a result, when users are not using the electrical appliances, the excessively long charging cables are easy to get tangled together, causing inconvenience to users.

[0003] To address the aforementioned issues, utility model publication CN207697511U, entitled "A Rotatable Automatic Retractable Charger," discloses a rotatable automatic retractable charger, comprising a housing, a rotating shaft, a charging device, a winding device, and a supporting device. The charging device includes an input end, an output end, a charging cable, and a charging controller. The input end, charging controller, and output end are sequentially connected via the charging cable. The charging controller is fixed inside the housing, while the input end and output end extend out of the housing. The charging cable is wound onto a reel. The winding device and housing are both fitted onto the rotating shaft, with the winding device located within the housing's inner cavity. One end of the rotating shaft extends out of the housing and is rotatably connected to the supporting device. While this design allows for the retractable winding of the charging cable within the housing, the input end, output end, and charging controller are all exposed outside the housing without a fixed structure. During storage or transport, they can easily sway and become entangled, scratched, or even pulled by the housing or other objects, potentially leading to poor contact or cable breakage and shortening the charger's lifespan. Utility Model Content

[0004] To address the aforementioned shortcomings, the purpose of this utility model is to provide a single-wire charger with a reasonable structural design that is convenient to carry and use.

[0005] To achieve the above objectives, the technical solution provided by this utility model is as follows:

[0006] A single-pull-cord charger includes a housing, a charging cable, a cable winder, a charging circuit board, a flip plug, a magnet, and a magnetic connector. The cable winder and the charging circuit board are disposed inside the housing. The flip plug is located at a corner of the housing and is connected to the charging circuit board. A wire hole is provided on the side wall of the housing. The charging cable is wound around the cable winder, with one end connected to the charging circuit board and the other end extending out of the housing through the wire hole and connected to the magnetic connector. A storage part is provided on the outer wall of the housing on one side corresponding to the wire hole. The magnet is located below the storage part and can be magnetically attracted to the magnetic connector located in the storage part.

[0007] As a preferred embodiment of this utility model, the storage part is slightly recessed on the outer surface of the outer shell, and the recessed design can provide a limiting effect for the placement of the magnetic connector.

[0008] As a preferred embodiment of this utility model, the outer shell includes a first shell and a second shell that covers the first shell. The first shell has an inner insert skirt on the inner side of its opening and an outer slot on the outer side. The second shell has a insertion position on the inner side of its opening that matches the inner insert skirt, and a insertion tooth on the outer side that can be inserted into the outer slot. The fit is tight and the structure is stable.

[0009] In a preferred embodiment of this invention, four connecting posts are arranged in a matrix within the second housing, forming a receiving cavity for placing the winding device. The outer wall of each connecting post has a positioning plate facing the receiving cavity, and the outer wall of the winding device has a positioning groove that matches the positioning plate. This matching of the positioning plate and the positioning groove ensures that the winding device is installed in the correct position.

[0010] In a preferred embodiment of this utility model, the end face of the connecting post is provided with a screw hole, and the charging circuit board is provided with a mounting hole corresponding to the screw hole. A screw passes through the mounting hole and is screwed into the screw hole. First, the winder is placed into the receiving cavity formed by the connecting post, and its positioning groove is engaged with the positioning plate of the connecting post to prevent the winder from spinning freely, thus providing a stable and reliable mounting platform for the winder and the charging circuit board.

[0011] In a preferred embodiment of this utility model, the flip plug includes an outer corner shell, an inner seat, AC prongs, and a metal connecting piece. One corner of the outer shell has an assembly opening adapted to its shape. The AC prongs are provided with a flip-up shaft seat. The outer corner shell has a storage groove that allows the AC prongs to flip and retract into it. The groove wall has a shaft hole adapted to the flip-up shaft seat. The metal connecting piece is mounted on the back of the outer corner shell via the inner seat. One end of the metal connecting piece is connected to the charging circuit board, and the other end extends to the tail of the AC prongs to form a spring claw. A locking protrusion is provided at the tail of the AC prongs to engage with the spring claw of the metal connecting piece when the prongs flip out of the storage groove. The AC prongs rotate through the cooperation of the flip-up shaft seat and the shaft hole, without occupying external space, avoiding scratches and impacts, and protecting the prongs from bending.

[0012] In a preferred embodiment of this invention, the magnetic connector includes a connector housing, a magnetic component disposed on the connector housing, and a Type-C connector. Type-C is a mainstream interface with strong compatibility. The magnetic component attracts and is fixed to a magnet located below the housing.

[0013] In a preferred embodiment of this invention, the magnetic attraction component is a built-in magnet or a built-in iron plate that can be magnetically attracted to the magnet. The appropriate component can be selected based on the required magnetic force and cost.

[0014] As a preferred embodiment of this utility model, the charging cable is a flat wire, which has a tighter structure and occupies less space after being wound.

[0015] The beneficial effects of this utility model are as follows: The utility model has a reasonable structural design, integrating the flip plug into the corner of the outer shell. It can be flipped open for use and retracted into a hidden structure when not in use, effectively solving the problem of exposed input terminals in traditional designs. A fixed storage point is formed by combining magnets and a magnetic connector. When not in use, the magnetic connector can be firmly attached to the storage part of the shell, ensuring that both the flip plug and the magnetic connector are properly fixed and protected during storage. This effectively solves the problems of scratching, tangling, and pulling that occur at the input and output terminals in traditional structures due to the lack of a positioning structure. It also prevents the plug from shaking and coming apart, greatly reducing the risk of poor contact and wire breakage, and significantly improving the product's lifespan and reliability. Furthermore, the overall structure is simple and compact, and the charger looks neat and aesthetically pleasing after storage, making it convenient to carry and use.

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0018] Figure 2 This is a structural diagram showing the disassembled structure of this utility model.

[0019] Figure 3 This is an exploded structural diagram of the outer shell in this utility model.

[0020] Figure 4 This is an exploded structural diagram of the flip plug in this utility model.

[0021] Figure 5 This is an exploded structural diagram of the magnetic connector in this utility model. Detailed Implementation

[0022] See Figures 1 to 5 This embodiment provides a single-wire charger, which includes a housing 1, a charging cable 2, a cable winder 3, a charging circuit board 4, a flip plug 5, a magnet 6, and a magnetic connector 7. The charging cable 2 is preferably a flat cable, rather than a traditional round cable. Flat cables are less prone to twisting, fundamentally reducing the problem of cable tangling and knotting, making storage and unwinding smoother. Furthermore, the flat cable has a tighter structure after winding, occupying less space, allowing the housing 1 to be made thinner.

[0023] The outer casing 1 includes a first casing 11 and a second casing 12 that covers the first casing 11. The first casing 11 has an inner insert skirt 111 on the inner side of its opening and an outer slot 112 on the outer side. The second casing 12 has a connector 121 on the inner side of its opening that matches the inner insert skirt 111, and a tooth 122 on the outer side that can be inserted into the outer slot 112. During assembly, the inner insert skirt 111 engages with the connector 121, and the tooth 122 engages with the outer slot 112. The fit is tight and the structure is stable. Furthermore, glue can be applied or ultrasonic welding can be performed at the fit.

[0024] The winding device 3 and the charging circuit board 4 are housed inside the outer casing 1. Specifically, four connecting posts 123 are arranged in a matrix inside the second casing 12, forming a receiving cavity for placing the winding device 3. The outer wall of each connecting post 123 has a positioning plate 124 facing the receiving cavity, and the outer wall of the winding device 3 has a positioning groove 31 that matches the positioning plate 124. The matching of the positioning plate 124 and the positioning groove 31 ensures that the winding device 3 is installed in the correct position and will not deviate during winding and unwinding, thus improving the working stability during winding and unwinding. A screw hole is provided on the end face of each connecting post 123, and the charging circuit board 4 has a mounting hole 41 corresponding to the screw hole. A screw passes through the mounting hole 41 and is screwed into the screw hole. First, the winding device 3 is placed into the receiving cavity formed by the connecting posts 123, and its positioning groove 31 engages with the positioning plate 124 of the connecting post 123 to prevent the winding device 3 from spinning freely. Then, align the mounting hole 41 of the charging circuit board 4 with the screw hole on the connecting post 123, and screw the charging circuit board 4 into the screw hole through the mounting hole 41 to suspend and fix it in the housing. The suspended installation creates airflow space, which is conducive to the heat dissipation generated by the charging circuit board 4 during the charging process, and provides a stable and reliable installation platform for the winder 3 and the charging circuit board 4.

[0025] The flip plug 5 is located at a corner of the outer casing 1 and is connected to the charging circuit board 4. (See also...) Figure 4 The flip plug 5 includes an outer corner shell 51, an inner seat 52, an AC plug 53, and a metal connecting piece 54. A mounting opening adapted to the shape of the outer corner shell 51 is provided at one corner of the outer shell 1. A flip shaft seat 55 is provided on the AC plug 53. A storage groove 511 is provided on the outer corner shell 51, allowing the AC plug 53 to flip and retract into it. A shaft hole 512 adapted to the flip shaft seat 55 is provided on the groove wall of the storage groove 511. The metal connecting piece 54 is disposed on the back of the outer corner shell 51 via the inner seat 52. One end of the metal connecting piece 54 is connected to the charging circuit board 4, and the other end extends to the tail of the AC plug 53 to form a spring claw portion 541. A latching protrusion 531 is provided at the tail of the AC plug 53, which contacts the spring claw portion 541 of the metal connecting piece 54 when the plug flips out of the storage groove 511. To improve the positioning effect, a positioning hole 542 is provided in the middle of the metal connecting piece 54, and a positioning post 521 adapted to the positioning hole 542 is provided on the inner seat 52. The inner seat 52 is fixed to the outer corner shell 51 by screws.

[0026] AC plug 53 rotates through the engagement of a rotating shaft seat 55 and a shaft hole 512. When the user pushes out the plug, the plug rotates 90 degrees, and the locking protrusion 531 at its tail rotates accordingly, pressing against the elastic claw portion 541 of the metal connecting piece 54 to form a stable electrical connection. When the user retracts the plug, the plug can be completely hidden in the storage slot 511 of the housing 1, without occupying external space, and avoiding scratches and impacts, while also protecting the plug itself from being bent.

[0027] The outer casing 1 has a wire hole on its side wall. The charging cable 2 is wound around the winder 3, with one end connected to the charging circuit board 4 and the other end extending out of the outer casing 1 through the wire hole and connected to the magnetic connector 7. A storage part is provided on the outer wall of the outer casing 1 on one side corresponding to the wire hole. Preferably, the storage part is slightly recessed from the outer surface of the outer casing 1. The recessed design provides a limiting effect for the placement of the magnetic connector 7, and when the magnetic connector 7 is placed in the recessed storage part, it reduces the height of its surface protruding from the outer casing 1, making the charger look flatter and more aesthetically pleasing after storage.

[0028] The magnet 6 is located below the storage section and can be magnetically attracted to the magnetic connector 7 located at the storage section. See also Figure 5 The magnetic connector 7 includes a connector housing 71, a magnetic component 72 disposed on the connector housing 71, and a Type-C connector 73. Type-C is a mainstream interface with strong compatibility. The magnetic component 72 attracts the magnet 6 located below the storage section of the housing 1, thus securing it in place. The magnetic method of fixing and removing the connector is very simple and quick, offering a far superior experience compared to snap-on or insert designs. The magnetic component 72 is a built-in magnet or a built-in iron plate that can attract the magnet 6. It can be flexibly selected based on the required magnetic force and cost.

[0029] In use, the flip plug 5 is integrated into the corner of the outer casing 1, allowing it to be flipped open when in use and retracted to form a hidden structure when not in use, effectively solving the problem of exposed traditional input terminals. A fixed storage point is formed by the combination of magnet 6 and magnetic connector 7. The cable winder 3 includes a winding base, a rotatable reel mounted on the winding base, and a spring that drives the reel to reset. The winding base has a movable part that cooperates with the reel. When releasing the charging cable 2, the charging cable 2 is pulled through the magnetic connector 7. The reel rotates under the tension of the charging cable 2, the spring deforms, and the movable part moves on the winding base and cooperates with the reel, locking the reel to maintain the cable in the pulled-out state. When the charging cable 2 is pulled to the desired length, stopping the pulling will automatically lock it. When winding the charging cable 2, the cable 2 pulls the winding reel to rotate, causing the movable part to move and unlock from the reel. After unlocking, the charging cable 2 is released, and the spring releases potential energy to drive the winding reel to reverse and reset, thus winding the charging cable 2. After winding, the magnetic connector 7 can be firmly attached to the storage part of the housing, ensuring that both the flip plug 5 and the magnetic connector 7 are properly fixed and protected during storage. This effectively solves the problems of scratching, tangling, and pulling that occur at the input and output ends in traditional structures due to the lack of a positioning structure. It also prevents the cable from shaking and coming apart, greatly reducing the risk of poor contact and wire breakage, and significantly extending the product's service life.

[0030] Based on the disclosure and teachings of the above specification, those skilled in the art can make changes and modifications to the above embodiments. Therefore, this utility model is not limited to the specific embodiments described above, and any obvious improvements, substitutions, or modifications made by those skilled in the art based on this utility model are within the protection scope of this utility model. Furthermore, although some specific terms are used in this specification, these terms are only for convenience of explanation and do not constitute any limitation on this utility model. Chargers with other structures obtained using the same or similar structures as described in the above embodiments of this utility model are all within the protection scope of this utility model.

Claims

1. A single-wire charger, comprising a housing, a charging cable, and a cable winder, characterized in that: It also includes a charging circuit board, a flip plug, a magnet, and a magnetic connector. The winding device and the charging circuit board are disposed inside the housing. The flip plug is located at a corner of the housing and is connected to the charging circuit board. A wire hole is provided on the side wall of the housing. The charging cable is wound on the winding device, with one end connected to the charging circuit board and the other end passing through the wire hole and extending out of the housing, and connected to the magnetic connector. A storage part is provided on the outer wall of the housing on one side corresponding to the wire hole. The magnet is located below the storage part and can be magnetically attracted to the magnetic connector located in the storage part.

2. The single-wire charger according to claim 1, characterized in that, The storage section is slightly recessed into the outer surface of the outer shell.

3. The single-wire charger according to claim 1, characterized in that, The outer casing includes a first casing and a second casing that covers the first casing. The first casing has an inner insert skirt on the inner side of its opening and an outer slot on the outer side. The second casing has a connector on the inner side of its opening that matches the inner insert skirt, and a tooth on the outer side that can be inserted into the outer slot.

4. The single-wire charger according to claim 3, characterized in that, The second housing has four connecting posts arranged in a matrix, forming a receiving cavity between the four connecting posts for placing the winding device. The outer wall of each connecting post is provided with a positioning plate facing the receiving cavity, and the outer wall of the winding device is provided with a positioning groove that matches the positioning plate.

5. The single-wire charger according to claim 4, characterized in that, The end face of the connecting post is provided with a screw hole, and the charging circuit board is provided with a mounting hole corresponding to the position of the screw hole. The screw passes through the mounting hole and is screwed into the screw hole.

6. The single-wire charger according to claim 1, characterized in that, The flip plug includes an outer corner shell, an inner seat, AC prongs, and a metal connecting piece. One corner of the outer shell has an assembly opening that matches its shape. The AC prongs have a flip-up shaft seat. The outer corner shell has a storage groove that allows the AC prongs to flip and retract. The groove wall has a shaft hole that matches the flip-up shaft seat. The metal connecting piece is mounted on the back of the outer corner shell via the inner seat. One end of the metal connecting piece is connected to the charging circuit board, and the other end extends to the tail of the AC prongs to form a spring claw. A latching protrusion is provided at the tail of the AC prongs that contacts the spring claw of the metal connecting piece when the prongs flip out of the storage groove.

7. The single-wire charger according to any one of claims 1-6, characterized in that, The magnetic connector includes a connector housing, a magnetic component disposed on the connector housing, and a Type-C connector.

8. The single-wire charger according to claim 7, characterized in that, The magnetic attraction component is a built-in magnet or a built-in iron plate that can be magnetically attracted to the magnet.

9. The single-wire charger according to claim 1, characterized in that, The charging cable is a flat cable.

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