A retractable charging cord

Abstract

The application relates to a telescopic charging wire and belongs to the technical field of chargers. The telescopic charging wire comprises an outer cover body, a winding turntable is arranged on the inner side of the outer cover body, a clockwork is arranged on the inner side of the winding turntable, a charging wire is wound on the outer side, a rotating control part for controlling the winding turntable is arranged on the inner side of the winding turntable; one end of the charging wire extends out of the outer cover body; a conductive assembly is arranged on the bottom or the top of the winding turntable and located on the inner side of the charging wire; the application cancels the side frames on the upper and lower sides of the winding turntable, increases the use space, and designs the control swing part, the control rotating wheel and the elastic sheet and other structures in the inner part of the winding turntable, does not affect the rotation of the charging wire, utilizes the space, arranges the clockwork in the inner part of the winding turntable, winds the charging wire on the outer part, arranges the conductive assembly on the lower part of the winding turntable, connects the conductive assembly with an external power supply wire, realizes a hidden wire charging product, solves the problem of large size of the telescopic charging wire, realizes space limit design, and is suitable for popularization and use.

Description

Technical Field

[0001] This application relates to the field of charger technology, and in particular to a retractable charging cable. Background Technology

[0002] A charger typically refers to a device that converts alternating current (AC) to low-voltage direct current (DC). It mainly consists of an adapter and a charging cable, which has a charging port. Chargers are widely used in common household appliances such as mobile phones and cameras. However, because fixed sockets are generally installed on walls, and the appliances being charged need to be placed on horizontal surfaces such as desktops, their charging cables are usually quite long.

[0003] With economic development and social progress, charging electrical appliances, mobile phones, and other electronic products has become a necessity. The problem of messy charging cables is a widely acknowledged issue. Due to structural and space constraints, the bulky size of retractable cable modules is a major market pain point. For example, existing retractable charging cables typically have borders on the top and bottom of the cable winding reel (as shown in the attached image). Figure 1 and attached Figure 2 To prevent the charging cable from swinging up and down, this design increases the volume of the retractable cable. To solve the above problem, this application designs an ultra-thin retractable cable module. Utility Model Content

[0004] In view of this, this application provides a retractable charging cable that can effectively overcome the defects of messy charging cables in the prior art.

[0005] This application provides a retractable charging cable, including an outer cover, a winding turntable disposed inside the outer cover, a spring disposed inside the winding turntable, and a charging cable wound around the outside of the winding turntable, and a rotation control component disposed inside the winding turntable; one end of the charging cable extends out of the outer cover; a conductive component is disposed at the bottom or top of the winding turntable and inside the charging cable.

[0006] This application eliminates the top and bottom bezels of the winding turntable, increasing usable space. The control components, control wheels, and springs inside the rotation control unit are designed inside the winding turntable, so as not to affect the rotation of the charging cable. The above design reduces the volume while making the most of the space.

[0007] Preferably, the thickness of the outer cover is equal to the thickness of the charging cable plus the thickness of the top and bottom walls of the outer cover.

[0008] Preferably, the outer cover includes an upper cover and a lower cover, and the arc-shaped outer ring connecting the upper cover and the lower cover has several openings, with one end of the charging cable extending from one of the openings.

[0009] Preferably, a column is provided at the middle position of the inner side of the lower cover, and the other end of the column passes through the conductive component and the winding turntable and is connected to the upper cover, wherein the innermost end of the spring is inserted into the column.

[0010] Preferably, the conductive component includes a wiring PCB board and a connector PCBA, the connector PCBA is installed at the middle position of the lower cover, and the wiring PCB board is installed at the bottom of the winding turntable and connected to the connector PCBA;

[0011] The connector PCBA has pads for external power supply lines on its bottom and on the outer wall of the lower cover.

[0012] Preferably, the rotation control component includes a rotating tooth located at the bottom center of the winding turntable and on the outside of the column. The rotating tooth engages with a control wheel installed at the bottom of the lower cover. A control swing element is installed above the control wheel. The control swing element is movably connected to the bottom wall of the lower cover, and a spring contact is located on the outside of the control swing element and on the inside of the winding turntable.

[0013] Preferably, the winding turntable has a cylindrical or near-cylindrical structure, and a limiting groove for fixing the outermost end of the spring is provided on its outer ring; a slot for fixing the wiring PCB board is also provided on the outer ring of the winding turntable, and a wire groove for fixing the inner end of the charging cable is provided on one side of the slot.

[0014] Preferably, the wiring PCB board is designed with multiple ring-shaped copper pours.

[0015] Preferably, the connector PCBA is designed with multiple contact springs corresponding to the annular copper pour.

[0016] Preferably, the wiring PCB and the connector PCBA are electrically connected through connector contact springs and annular copper plating.

[0017] Compared with the prior art, this application has the following advantages:

[0018] This application eliminates the top and bottom bezels of the winding turntable, increasing usable space. The control components, control wheel, and spring are designed inside the winding turntable, without affecting the rotation of the charging cable, thus making maximum use of space. A spring is installed inside the winding turntable, and the charging cable is wound on the outside. A conductive component is set at the bottom of the winding turntable, which is connected to an external power supply line to realize a hidden charging product. This application solves the problem of large size of retractable charging cables, achieves space-limited design, and is suitable for widespread use. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in this application or the prior art, the drawings used in the description of this application or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0020] Figure 1 A schematic diagram of the design of the lower frame of an existing retractable charging cable winding turntable;

[0021] Figure 2 A schematic diagram of the design of an existing retractable charging cable winding turntable with upper and lower borders;

[0022] Figure 3 This is a schematic diagram of the retractable charging cable of this application.

[0023] Figure 4 This is a structural disassembly diagram of the retractable charging cable of this application;

[0024] Figure 5 This is a structural diagram showing the structure when the cover of this application is removed;

[0025] Figure 6 for Figure 5 Partial structural diagram;

[0026] Figure 7 This is a schematic diagram of the top cover and internal structure of this application;

[0027] Figure 8 This is a schematic diagram of the winding turntable of this application.

[0028] Explanation of reference numerals in the attached figures:

[0029] 1. Top cover; 2. Bottom cover; 21. Column; 3. Winding turntable; 31. Limiting groove; 32. Card slot; 33. Wire groove; 4. Control ornament; 5. Control wheel; 6. Wiring PCB board; 7. Spring; 8. Connector PCBA; 81. Rotating tooth; 9. Charging cable; 10. Spring. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0031] First, those skilled in the art should understand that these embodiments are merely for explaining the technical principles of this application and are not intended to limit the scope of protection of this application. Those skilled in the art can make adjustments as needed to adapt to specific application scenarios.

[0032] Secondly, it should be noted that in the description of this application, the terms "upper", "lower", "left", "right", "front", "back", "inner", "outer", etc., which indicate the direction or positional relationship, are based on the direction or positional relationship shown in the accompanying drawings. This is only for the convenience of description and does not indicate or imply that the device or component must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this application.

[0033] Reference Figure 3 and Figure 4 This embodiment provides a retractable charging cable, including an upper cover 1, a lower cover 2, a winding turntable 3, a control ornament 4, a control wheel 5, a wiring PCB board 6, a spring 7, a connector PCBA 8, a charging cable 9, and a spring 10; the winding turntable 3 is installed between the upper cover 1 and the lower cover 2, and a column 21 is provided at the middle position of the lower cover 2, wherein the column 21 can pass through the winding turntable 3 and connect to the upper cover 1.

[0034] Specifically, refer to Figure 4 A spring 10 is wound on the inner side of the winding turntable 3 and below the upper cover 1, wherein the innermost side of the spring 10 is engaged with the column 21 and the outermost side of the spring 10 is engaged with the winding turntable 3.

[0035] Specifically, refer to Figure 3 The inner rings of the upper cover 1 and the lower cover 2 are designed to be circular or nearly circular, and the outer dimensions are designed as a plane. Several openings are set at the junction of the plane and the circular edge, and the maximum length and width of the openings can accommodate the charging cable 9. The openings between the upper cover 1 and the lower cover 2 are correspondingly positioned.

[0036] Specifically, refer to Figure 3 A column 21 is provided at the middle position of the inner side of the lower cover 2. The other end of the column 21 passes through the conductive component and the winding turntable 3 and is connected to the upper cover 1. The innermost end of the spring 10 is inserted into the column 21.

[0037] Specifically, refer to Figure 8 The winding turntable 3 has a cylindrical or near-cylindrical structure, and a limiting groove 31 for fixing the outermost end of the spring 10 is provided on its outer ring; a slot 32 for fixing the wiring PCB board 6 is also provided on the outer ring of the winding turntable 3, and a wire groove 33 for fixing the inner end of the charging cable 9 is provided on one side of the slot 32; a through hole for the column 21 is provided at the middle position of the winding turntable 3.

[0038] Specifically, refer toFigure 8 A rotating tooth 81 is provided at the bottom center of the winding turntable 3 and outside the column 21. The rotating tooth 81 meshes with the control wheel 5 located at the bottom of the lower cover 2. A control swing piece 4 is installed above the control wheel 5. The control swing piece 4 is movably connected to the bottom wall of the lower cover 2. A spring piece 7 is in contact with the outside of the control swing piece 4 and inside the winding turntable 3.

[0039] Specifically, refer to Figure 4 , Figure 5 , Figure 6 and Figure 7 The winding turntable 3 has a spring 10 on its inner side and a charging cable 9 on its outer side; one end of the charging cable 9 extends out of the outer cover; the bottom or top of the winding turntable 3 and the inner side of the charging cable 9 are provided with a wiring PCB board 6 and a connector PCBA8; the connector PCBA8 is installed at the middle position of the lower cover 2; the wiring PCB board 6 is installed at the bottom of the winding turntable 3 and connected to the connector PCBA8; the bottom of the connector PCBA8 and the outer wall of the lower cover 2 are provided with a pad for external power supply.

[0040] For example, the wiring PCB 6 is designed with multiple ring-shaped copper pours, and the connector PCBA 8 is designed with multiple contact springs corresponding to the ring-shaped copper pours. The wiring PCB 6 and the connector PCBA 8 conduct electricity through the contact springs of the connector and the ring-shaped copper pours.

[0041] The working principle of the retractable charging cable in this application embodiment is as follows:

[0042] The top and bottom edges of the winding turntable 3 are removed and fixed inside the top and bottom surfaces of the top cover 1 and the bottom cover 2. The thickness of the entire product is equal to the width of the charging cable 9 plus the shell thickness of the cover 1 and the bottom cover 2, making the most of the thickness space of the entire product.

[0043] To eliminate the fixed frame of the winding turntable 3, the spring 10 is designed inside the upper part of the winding turntable 3 (the upper and lower edges are not limited in the product design). The wiring PCB board 6, the control ornament 4, the control wheel 5, and the connector PCBA8 are designed inside the lower part of the winding turntable 3 (the upper and lower edges are not limited in the product design).

[0044] To maximize space utilization, multiple ring-shaped copper pours are designed on the wiring PCB 6, and two or more connectors are designed on the connector PCBA 8. Five or more (variable number) contact springs are designed on the connectors soldered to the connector PCBA 8. In order to provide assembly space for the control component 4, control wheel 5, and spring 7, the wiring PCB 6 is fixed on the winding turntable 3.

[0045] The connector PCBA8 is fixed on the lower cover 2. The wiring PCB 6 and the connector PCBA8 are electrically connected through the contact spring and the annular copper plate. The connector PCBA8 has an arc-shaped opening on one side to avoid the control ornament 4, control wheel 5 and spring 7, making the most of the space.

[0046] The winding turntable 3 is designed with three or more grooves. In order to make use of the space, the grooves are designed on the outer ring of the central shaft. One end of the control ornament 4 contacts the groove of the winding turntable 3. When the winding turntable 3 rotates clockwise or counterclockwise, the control ornament 4 swings left and right to realize the extension and retraction control of the charging cable 9.

[0047] Five (unlimited) pads are designed on the outer side of the connector PCBA8 and on the outer wall of the lower cover 2 to connect to the external power supply line. The connector spring contact on the connector PCBA8 contacts the ring copper on the wiring PCB 6. The wiring PCB 6 is designed with pads on the side to connect the charging line to the pads, connecting the external power supply line to the power supply side. The other end of the charging line 9 is connected to the charging side, thereby realizing charging.

[0048] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A retractable charging cable, comprising an outer cover, characterized in that, The inner side of the outer cover is provided with a winding turntable (3), the inner side of the winding turntable (3) is provided with a spring (10), and the outer side is provided with a charging cable (9). A control component for controlling its rotation is provided on the inner side of the winding turntable (3). One end of the charging cable (9) extends out of the outer cover; a conductive component is provided at the bottom or top of the winding turntable (3) and inside the charging cable (9).

2. The retractable charging cable according to claim 1, characterized in that, The thickness of the outer cover is equal to the thickness of the charging cable (9) plus the thickness of the top and bottom walls of the outer cover.

3. The retractable charging cable according to claim 1, characterized in that, The outer cover includes an upper cover (1) and a lower cover (2). The upper cover (1) and the lower cover (2) are connected by an arc-shaped outer ring with several openings. One end of the charging cable (9) extends out from one of the openings.

4. The retractable charging cable according to claim 3, characterized in that, A column (21) is provided at the middle position of the inner side of the lower cover (2). The other end of the column (21) passes through the conductive component and the winding turntable (3) and is connected to the upper cover (1). The innermost end of the spring (10) is inserted into the column (21).

5. The retractable charging cable according to claim 4, characterized in that, The conductive component includes a wiring PCB board (6) and a connector PCBA (8). The connector PCBA (8) is installed at the middle position of the lower cover (2). The wiring PCB board (6) is installed at the bottom of the winding turntable (3) and connected to the connector PCBA (8). The connector PCBA (8) has a pad for external power supply on its bottom and on the outer wall of the lower cover (2).

6. The retractable charging cable according to claim 4, characterized in that, The rotation control component includes a rotating tooth (81) located at the bottom center of the winding turntable (3) and outside the column (21). The rotating tooth (81) meshes with a control wheel (5) installed at the bottom of the lower cover (2). A control swing member (4) is installed above the control wheel (5). The control swing member (4) is movably connected to the bottom wall of the lower cover (2). A spring piece (7) contacts the outside of the control swing member (4) and inside the winding turntable (3). The control wheel (5), the control swing member (4), and the spring piece (7) are all located inside the winding turntable (3).

7. The retractable charging cable according to claim 5, characterized in that, The winding turntable (3) has a cylindrical or nearly cylindrical structure, and a limiting groove (31) for fixing the outermost end of the spring (10) is provided on its outer ring; a slot (32) for fixing the wiring PCB board (6) is also provided on the outer ring of the winding turntable (3), and a wire groove (33) for fixing the inner end of the charging cable (9) is provided on one side of the slot (32).

8. The retractable charging cable according to claim 5, characterized in that, Multiple ring-shaped copper pours are designed on the wiring PCB board (6).

9. The retractable charging cable according to claim 8, characterized in that, The connector PCBA (8) is designed with multiple contact springs corresponding to the annular copper pour.

10. The retractable charging cable according to claim 9, characterized in that, The wiring PCB (6) and the connector PCBA (8) are electrically connected through the connector contact spring and the annular copper plating.

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