Charging device

Abstract

The utility model discloses a charging device which comprises an outer shell and a telescopic wire module installed in the outer shell, the outer shell is provided with a containing groove and a wire outlet communicated with the containing groove, and the telescopic wire module comprises a wire capable of stretching out and drawing back relative to the outer shell. The wire comprises a wire body, a plug electrically connected with the wire body and a limiting piece arranged on the outer side of the wire body, and the accommodating groove is used for accommodating the plug; one end of the wire body is connected to the interior of the outer shell, the other end of the wire body penetrates through the wire outlet and is connected with the plug, the limiting piece and the plug are arranged in a spaced mode, and when the plug is contained in the containing groove, the limiting piece is located in the containing groove, and the limiting piece is located on the outer side of the wire outlet. The wire body located between the plug and the limiting piece is located in the containing groove, the wire body is relatively easy to bend, the plug can be conveniently contained in the containing groove, the wire body cannot directly generate pulling force on the plug to enable the plug to retract into the outer shell, and the problem that the plug tilts after being contained in the containing groove can be prevented.

Description

Technical Field

[0001] This utility model relates to the field of electronic product technology, and in particular to a charging device. Background Technology

[0002] Currently, mobile phones and other electronic devices have become essential tools that people carry with them in their daily lives. They are used more and more frequently in life and work. However, the battery life of electronic devices is limited. Therefore, the use of charging devices such as chargers and power banks to charge electronic devices is also increasing.

[0003] Existing charging devices typically feature retractable data cables for user convenience. When charging is needed, the cable is extended to the appropriate length; when not charging, it is retracted inside the charging device's housing for easy storage and portability. These retractable data cables consist of an interconnected cable and a plug. The cable usually retracts automatically under the action of an elastic element such as a coil spring. After retraction, the cable is housed inside the housing, with a receiving groove on the outer wall of the housing where the plug should be accommodated. However, because the direction of the plug's movement into the receiving groove is not aligned with the direction of the cable's retraction into the housing, the tension of the cable causes the end of the plug connected to the cable to press against the cable outlet of the housing, resulting in the plug tilting upwards. Utility Model Content

[0004] In view of this, the present invention provides a charging device to solve the problem of the plug sticking up after the existing charging device retracts the cord.

[0005] This application provides a charging device, including a housing and a retractable cable module installed inside the housing. The outer side of the housing is provided with a receiving groove and a cable outlet communicating with the receiving groove. The retractable cable module includes a wire that can extend and retract relative to the housing. The wire includes a wire body, a plug electrically connected to the wire body, and a limiting member disposed on the outer side of the wire body. The receiving groove is used to receive the plug. One end of the wire body is connected to the inside of the housing, and the other end passes through the cable outlet and is connected to the plug. The limiting member is spaced apart from the plug. When the plug is stored in the receiving groove, the limiting member is located in the receiving groove and is located outside the cable outlet.

[0006] In some embodiments, the limiting member includes two mutually perpendicular length directions, width directions, and thickness directions. The length direction of the limiting member is consistent with the length direction of the line body, and the dimension of the limiting member in the width direction and / or the dimension in the thickness direction is greater than the dimension of the outlet.

[0007] In some embodiments, the receiving groove has a first direction, and when the plug is housed in the receiving groove, the first direction of the receiving groove is consistent with the width direction of the limiting member; the maximum width of the limiting member in the width direction is h1, and the maximum width of the receiving groove in the first direction is h2, wherein 0.3mm≤h2-h1≤1mm; and / or, the maximum width of the limiting member in the width direction is h1, and the maximum dimension of the outlet in the first direction is h3, wherein h1-h3≥1mm.

[0008] In some embodiments, the limiting member includes a first end face, a second end face, and a side surface connecting the first end face and the second end face. The first end face and the second end face are located at opposite ends in the length direction of the limiting member, and the second end face is disposed close to the plug relative to the first end face. The side surface includes a first arc surface, which is connected to the first end face and located on one side in the thickness direction. When the plug is housed in the receiving groove, the first arc surface contacts the bottom wall of the receiving groove.

[0009] In some embodiments, the first arc surface includes a first side and a second side, the first side being connected to the first end face, and the second side being disposed relative to the first side and close to the second end face; in the length direction, the angle formed by the line connecting the first side and the second side and the line body is in the range of 30° to 55°.

[0010] In some embodiments, a soft rubber component is further included, with the outlet extending through the soft rubber component; the receiving groove has an outlet end and an operating end located on opposite sides, and the receiving groove has a clearance hole on the side near the outlet end, with the soft rubber component sleeved around the periphery of the clearance hole.

[0011] In some embodiments, the soft rubber component includes a side portion and a bent portion connected to one end of the side portion, the side portion being at least partially disposed on the wall of the outlet end, the bent portion extending from the side portion toward the operating end, and the outlet being disposed on the side portion and the bent portion.

[0012] In some embodiments, the side portion is perpendicular to the bend portion, and the connection between the side portion and the bend portion forms a second arc surface; and / or, the side portion extends away from the bend portion to the top of the receiving groove wall.

[0013] In some embodiments, the outer side of the soft rubber part has a protrusion, which is attached to and fixedly connected with the outer shell; and / or, the soft rubber part and the outer shell are integrally injection molded.

[0014] In some embodiments, the receiving groove has a cable outlet and an operating end located on opposite sides, the cable outlet is disposed at the cable outlet, and the telescopic cable module further includes a take-up shell with an outlet disposed opposite to the cable outlet; the outlet has a first end and a second end, the first end being disposed near the cable outlet relative to the second end, and along the arrangement direction of the cable outlet and the operating end, the first end is located between the cable outlet and the operating end.

[0015] In some embodiments, the outlet has a first outlet side and a second outlet side disposed opposite to each other, the first outlet side being disposed close to the operating end relative to the second outlet side, and the first end being spaced apart from the first outlet side.

[0016] In some embodiments, the telescopic cable module further includes a winding frame rotatably mounted inside the take-up housing, one end of the cable is wound on the winding frame, and the cable includes a cable segment located between the outlet and the outlet. When the conductor is in its maximum tension state, the cable segment is spaced apart from the first end and the second end, respectively.

[0017] Compared with the prior art, the charging device provided by this utility model has at least the following beneficial effects:

[0018] By setting a limiting element on the wire, when the plug is stored in the receiving groove, the limiting element is located outside the outlet, preventing the wire between the limiting element and the plug from entering the housing through the outlet. The wire is relatively easy to bend, causing the plug to shift towards the receiving groove, making it easier to store the plug in the receiving groove. Moreover, the wire does not directly exert a pulling force on the plug to retract it into the housing, which can prevent the plug from tilting up after being stored in the receiving groove. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of a charging device provided in an embodiment of the present invention;

[0020] Figure 2 for Figure 1 A schematic diagram of the charging device shown from another perspective;

[0021] Figure 3 for Figure 2 An assembly diagram of the wires, wire fittings, and flexible plastic parts shown in the figure;

[0022] Figure 4 for Figure 3 An exploded view of the wires, wire fittings, and flexible plastic parts shown in the diagram;

[0023] Figure 5 for Figure 3Cross-sectional views of the wires, wire fittings, and flexible plastic parts shown;

[0024] Figure 6 for Figure 4 The diagram shows the assembly of the line body and the limiting component.

[0025] Figure 7 for Figure 4 An exploded view of the wire fittings and flexible rubber parts shown in the diagram;

[0026] Figure 8 for Figure 1 An exploded view of the charging device shown;

[0027] Figure 9 for Figure 8 The diagram shows the assembly of the main housing and control buttons.

[0028] Figure 10 for Figure 1 The charging device shown is a cross-sectional view with the wires removed.

[0029] In the diagram: 10. Charging device; 12. Housing; 14. Telescopic cable module; 16. Receiving slot; 18. Cable outlet; 21. Battery; 20. Wire; 22. Cable body; 24. Plug; 26. Limiting component; 30. Magnetic component; 42. Soft rubber component; 46. Protrusion; 48. Clearance part; 50. Main housing; 52. Housing accessories; 54. Positioning protrusion; 56. Positioning groove; 58. Control button; 60. Pressing part; 62. Limiting part; 6 4. Protrusion; 66. Take-up housing; 68. Winding rack; 70. Outlet; 161. Outlet end; 162. Operating end; 260. Side; 261. First end face; 262. Second end face; 263. First arc surface; 264. First side; 265. Second side; 421. Side part; 422. Bending part; 423. Second arc surface; 181. First side of outlet; 182. Second side of outlet; 701. First end; 702. Second end. Detailed Implementation

[0030] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0031] It should be noted that all directional indicators (such as up, down, left, right, front, back, inside, outside, top, bottom, etc.) in the embodiments of this utility model are only used to explain the relative positional relationship between the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0032] It should also be noted that when a component is referred to as "fixed to" or "set on" another component, the component may be directly on the other component or there may be an intervening component present. When a component is referred to as "connected to" another component, it may be directly connected to the other component or there may be an intervening component present.

[0033] Please see Figures 1 to 10 This utility model provides a charging device 10 that connects to an electronic device via a wire to charge the device. The charging device 10 can be a self-contained power bank or a charger requiring an external power source. The charging device 10 includes a housing 12 and a retractable cable module 14. The retractable cable module 14 is installed inside the housing 12. The outer wall of the housing 12 has a receiving groove 16 and a cable outlet 18 communicating with the receiving groove 16. The retractable cable module 14 includes a retractable cable 20 relative to the housing 12. One end of the cable 20 extends through the cable outlet 18 to the outside of the housing 12 for connection to the electronic device. When charging is needed, the cable 20 can be pulled outwards to a suitable length for connection to the electronic device. When charging is not needed, the cable 20 can be retracted and stored inside the housing 12, reducing the overall size of the charging device 10 when not in use, facilitating storage and carrying, and protecting the cable 20 located inside the housing 12.

[0034] Optionally, an electronic control module is provided inside the housing 12. The electronic control module is electrically connected to the wire 20 of the retractable cable module 14. For example, if the charging device 10 is a power bank, the electronic control module includes a battery 21, and the wire 20 of the retractable cable module 14 is electrically connected to the battery 21. After the wire 20 is electrically connected to the electronic device, the charging device 10 can charge the electronic device through the battery 21.

[0035] The conductor 20 includes a conductor 22, a plug 24 electrically connected to the conductor 22, and a limiting member 26 located on the outside of the conductor 22. The conductor 22 is retractable relative to the outer casing 12. One end of the conductor 22 is connected to a retractable cable module 14 inside the outer casing 12, and the other end passes through the outlet 18 and connects to the plug 24. The port on the plug 24 is used to insert into the charging port of an electronic device for connection. The aforementioned receiving groove 16 is used to receive the plug 24. It should be noted that "the plug 24 is received in the receiving groove 16" means that at least the port on the plug 24 is located within the receiving groove 16. The limiting member 26 is located outside the outer casing 12 and is positioned near one end of the plug 24. For example, the limiting member 26 is fitted over the outside of the conductor 22 and fixed relative to the conductor 22. The limiting member 26 and the plug 24 are spaced apart by a distance of 1.8 mm to 3 mm. When the plug 24 is housed in the receiving groove 16, the limiting member 26 is located within the receiving groove 16 and outside the outlet 18. At this time, the limiting member 26 is located between the outlet 18 and the plug 24, and the side of the limiting member 26 away from the plug 24 contacts the inner wall of the receiving groove 16 under the pulling force of the wire 22. The outer shell 12 has a limiting effect on the limiting member 26, preventing the limiting member 26 from entering the outlet 18 or entering the interior of the outer shell 12 through the outlet 18, thereby preventing the wire 22 located between the limiting member 26 and the plug 24 from entering the interior of the outer shell 12 through the outlet 18. At this time, the part of the wire 22 located between the plug 24 and the limiting member 26 is located on the outside of the outer shell 12, which can be called the exposed wire. Since the wire 22 is relatively easy to bend, the plug 24 will shift closer to the receiving groove 16 due to its own weight and the easy bending of the exposed wire. Since the plug 24 and the wall of the receiving groove 16 are provided with a magnetic attraction structure that attracts each other, it is convenient to attract and store the plug 24 in the receiving groove 16. Moreover, the wire 22 will not directly exert a pulling force on the plug 24 to retract it into the outer shell 12, which can prevent the plug 24 from tilting up after being stored in the receiving groove 16.

[0036] The cable body 22 includes a wire core electrically connected to the plug 24 and a sheath covering the wire core. The limiting member 26 can be integrally formed with the sheath of the cable body 22 or separately formed from the sheath of the cable body 22. In this embodiment, the limiting member 26 is annular, which is sleeved on the outer periphery of the cable body 22 and fixedly connected to the cable body 22.

[0037] The plug 24 and the outer shell 12 are respectively provided with mutually cooperating limiting structures to enhance the stability of the plug 24 when it is stored in the receiving groove 16. In an optional example, the limiting structure is a magnetic structure. The plug 24 and the outer shell 12 are respectively provided with magnetic elements 30. When the plug 24 is stored in the receiving groove 16, the magnetic elements 30 on the plug 24 and the magnetic elements 30 on the outer shell 12 magnetically cooperate to form an attraction force on the plug 24, thereby enhancing the stability of the plug 24 when it is stored in the receiving groove 16.

[0038] In one embodiment, the cable 22 is flat, with a length greater than its width and a width greater than its thickness. The cable 22 includes two mutually perpendicular length directions X, width directions Y, and thickness directions Z. The limiting member 26 also has the same length direction X, width direction Y, and thickness direction Z as the cable 22. The receiving groove 16 has a first direction, a second direction, and a third direction. When the plug 24 is housed in the receiving groove 16, the first direction aligns with the width direction Y of the limiting member 26, the second direction aligns with the length direction X of the limiting member 26, and the third direction aligns with the thickness direction Z of the limiting member 26. In this embodiment, the first direction is, for example, the height direction of the outer shell 12, the second direction is, for example, the width direction of the outer shell 12, and the third direction is, for example, the length direction of the outer shell 12. The receiving groove 16 includes a cable outlet 161 and an operating end 162 arranged opposite to each other in the second direction. The cable outlet 18 is located at the cable outlet 161. When the plug 24 is received in the receiving groove 16, the end of the limiting member 26 away from the plug 24 is close to the cable outlet 161, and the port on the plug 24 is close to the operating end 162. When the user stretches the wire 20, the plug 24 is taken out from the operating end 162 and stretched, which causes the wire 22 to stretch. When the plug 24 is stored in the receiving groove 16, the limiting member 26 and the plug 24 are spaced apart in the length direction X, and the distance between the limiting member 26 and the plug 24 is 1.8mm to 3mm. When the distance between the limiting member 26 and the plug 24 is less than 1.8mm, the wire 22 located between the limiting member 26 and the plug 24 is difficult to deform or bend, which increases the difficulty of magnetic attraction between the magnetic part 30 on the plug 24 and the magnetic part 30 on the outer shell 12. When the distance between the limiting member 26 and the plug 24 is greater than 3mm, the size of the receiving slot will be too large, resulting in an unsightly appearance and potentially affecting the overall volume of the charging device.

[0039] Furthermore, the limiting member 26 is larger than the size of the outlet 18 in the width direction Y and / or thickness direction Z to prevent the limiting member 26 from passing through or entering the outlet 18. This ensures that when the plug 24 is housed in the receiving groove 16, the surface of the limiting member 26 away from the plug 24 can abut against the inner wall of the receiving groove 16, thus limiting the limiting member 26 and preventing it from being sucked into the outlet 18. It also prevents the length direction X of the limiting member 26 from forming an angle with the bottom of the receiving groove 16, which would increase the risk of the limiting member 26 lifting up and causing the plug 24 to lift up, preventing the plug 24 from fitting into the receiving groove 16.

[0040] The dimension of the limiting member 26 in the width direction Y is larger than the dimension of the outlet 18, so that the limiting member 26 contacts the inner wall of the receiving groove 16 on opposite sides in the width direction Y. While increasing the contact area between the limiting member 26 and the inner wall of the receiving groove 16, the limiting member 26 is subjected to more balanced forces, thus enhancing the stability of the limiting.

[0041] In this embodiment, both the plug 24 and the wire 22 are flat. The length of the plug 24 is greater than its width and its thickness. The length direction of the plug 24 is the same as the length direction of the wire 22. The width direction of the plug 24 is the same as the width direction of the wire 22. The thickness direction of the plug 24 is the same as the thickness direction of the wire 22. The width of the receiving groove 16 is greater than the width of the plug 24. The width of the plug 24 is greater than the width of the wire 22.

[0042] When the plug 24 is housed in the receiving groove 16, the first direction of the receiving groove 16 is consistent with the width direction of the limiting member 26. The maximum width of the limiting member 26 in the width direction is h1, and the maximum width of the receiving groove 16 in the first direction is h2, where 0.3mm ≤ h2 - h1 ≤ 1mm. Understandably, the maximum width of the receiving groove 16 in the first direction is 0.3mm to 1mm larger than the maximum width of the limiting member 26 in the width direction. Specifically, the limiting member 26 includes two opposing first outer walls in the width direction, and the maximum width of the limiting member 26 in the width direction is also the maximum distance between the two first outer walls. The receiving groove 18 includes two opposing first inner walls in the first direction, and the maximum width of the receiving groove 18 in the first direction is also the maximum distance between the two first inner walls. When the plug 24 is housed in the receiving groove 16, each first outer wall is spaced apart from a corresponding first inner wall, and the distance between adjacent first outer walls and first inner walls is 0.15mm to 0.5mm. When the distance between the first outer wall and the first inner wall is less than 0.15mm, the error tolerance of the plug 24 entering the receiving groove 16 during wire winding is low, and the wall of the plug 24 is difficult to accurately align with the receiving groove 16, affecting the storage of the plug 24 in the receiving groove 16; when the distance between the first outer wall and the first inner wall is greater than 0.5mm, when the plug 24 is stored in the receiving groove 16, the plug 24 has a large space to shift within the receiving groove 16, avoiding the problem of the plug 24 tilting due to displacement.

[0043] The maximum dimension of the outlet 18 in the first direction is h3, where h1-h3≥1mm, meaning the maximum width of the limiting member 26 in the width direction is more than 1mm larger than the maximum width of the outlet 18 in the first direction. For example, the receiving groove 16 includes two second inner walls on opposite sides of the outlet 18 in the first direction. When the plug 24 is housed in the receiving groove 16, the two first outer walls of the limiting member 26 are spaced apart from the two second inner walls of the outlet 18, and the distance between adjacent first outer walls and second inner walls is not less than 0.5mm, ensuring the contact area between the limiting member 26 and the inner wall of the receiving groove 16, and avoiding the stability of the limiting due to too small a contact area. Since the limiting member 26 is made of an elastic material, such as soft rubber, when the distance between adjacent first outer walls and second inner walls is less than 0.5mm, the limiting member 26 can easily be sucked into the housing 12 from the outlet 18.

[0044] The distance between the limiting member 26 and the plug 24 is 1.8mm to 3mm. That is, the length of the wire 22 located in the receiving groove 16 is between 1.8mm and 3mm. This can avoid the wire 22 becoming more difficult to deform due to too small a distance, thus affecting the storage of the plug 24, and also avoid the receiving groove 16 becoming too long due to too large a distance, thus affecting the overall volume of the charging device 10.

[0045] In one embodiment, the limiting member 26 includes a first end face 261, a second end face 262, and a side surface 260 connecting the first end face 261 and the second end face 262. The side surface 260 includes, for example, the first outer wall described above. The first end face 261 and the second end face 262 are respectively disposed at opposite ends of the limiting member 26 in the length direction X, with the second end face 262 disposed close to the plug 24 relative to the first end face 261. The side surface 260 includes a first arc surface 263, which connects to the first end face 261 and is located on one side of the wire body 22 in the thickness direction Z. An opening is formed at the top of the receiving groove 16 to allow the plug 24 to enter or exit the receiving groove 16. The inner wall of the receiving groove 16 opposite to the opening is the bottom wall. When the plug 24 is housed in the receiving groove 16, the first arc surface 263 contacts the bottom wall of the receiving groove 16. The portion of the wire 20 wound and stored inside the outer casing 12 is not in the same direction as the portion located in the receiving groove 16. The wire 22 exerts an inclined pulling force on the limiting member 26. The first arc surface 263 can create a clearance effect, allowing the limiting member 26 to rotate a certain angle towards the receiving groove 16 under the action of the pulling force, thereby reducing the angle between the plug 24 and the outer casing 12. This reduces the distance between the magnetic element 30 inside the plug 24 and the magnetic element 30 inside the outer casing 12. The smaller the distance, the greater the magnetic attraction between the magnetic elements 30, so that the magnetic element 30 can be used to attract and store the plug 24 in the receiving groove 16.

[0046] The first arc surface 263 includes a first side 264 and a second side 265. The first side 264 is connected to the first end face 261, and the second side 265 is disposed relative to the first side 264 and closer to the second end face 265. In the thickness direction Z, the first side 264 is closer to the line body 22 than the second side 265. In the length direction, the angle α formed by the line connecting the first side 264 and the second side 265 and the line body 22 ranges from 30° to 55°. If the angle α is too large or too small, the first arc surface 263 will not fit tightly with the receiving groove 16, thereby reducing the clearance effect. In an optional example, the angle α is 45°. In one embodiment, the first arc surface 263 can be replaced with an inclined surface, which is not a unique limitation.

[0047] In this embodiment, the receiving groove 16 further includes a surrounding wall located between the bottom wall and the opening. The surrounding wall includes, for example, the two opposing first inner walls described above, and two curved walls respectively connected to the two first inner walls, with the two curved walls being opposite each other. The cable outlet 18 is partially located on the surrounding wall, for example, on one of the curved walls, and partially on the bottom wall, with the portion on the surrounding wall communicating with the portion on the bottom wall, thus forming an L-shaped cable outlet 18. The portion of the cable outlet 18 located on the bottom wall can avoid contact with the cable 22 during the stretching of the conductor 20; the portion of the cable outlet 18 located on the surrounding wall can also avoid contact with the cable 22 during the retraction of the conductor 20; this avoids the risk of the cable 22 rubbing against the cable outlet 18, reduces wear on the cable 22, and extends its service life.

[0048] In one embodiment, the charging device 10 further includes a flexible rubber component 42, with a cable outlet 18 extending through it. A receiving groove 16 includes an opposing cable outlet 161 and an operating end 162, which are, for example, located on two opposing curved walls. The flexible rubber component 42 is mounted to the cable outlet 161. Optionally, the receiving groove 16 has a clearance hole 163 on the side near the cable outlet 161. The clearance hole 163 is partially located on one of the curved walls and partially on the bottom wall, forming an L-shape. The flexible rubber component 42 is fitted around the periphery of the clearance hole 163, thus also having an L-shape. By providing the cable outlet 18 on the flexible rubber component 42, the cable 22 contacts the flexible rubber component 42 during extension and retraction. The flexible rubber component 42 has low hardness, which reduces wear on the cable 22 during extension and retraction.

[0049] Optionally, the hardness of the soft rubber part 42 is less than the hardness of the sheath of the thread body 22, so as to further reduce the wear of the thread body 22 during the stretching process.

[0050] The outer side of the soft rubber part 42 has a protrusion 46, which is attached to and fixedly connected to the outer shell 12. The outer shell 12 has a recess corresponding to the protrusion 46, with the protrusion 46 located within the recess. The outer shell 12 and the soft rubber part 42 form a convex-concave fit, increasing the contact area between the soft rubber part 42 and the outer shell 12, thereby improving the connection strength between the soft rubber part 42 and the outer shell 12.

[0051] The number of protrusions 46 can be one or more. When there are multiple protrusions 46, the shapes of the multiple protrusions 46 can be the same or different.

[0052] The portion connecting the outer shell 12 and the soft rubber part 42 is a hard rubber part. The soft rubber part 42 and the hard rubber part are integrally injection molded to ensure the connection strength between the soft rubber part 42 and the outer shell 12, while reducing production steps and improving production efficiency. In one embodiment, the soft rubber part 42 includes a side portion 421 and a bent portion 422 connected to one end of the side portion 421. The side portion 421 and the bent portion 422 are perpendicular. The side portion 421 is at least partially located on the wall of the cable outlet 161, for example, on the curved wall of the cable outlet. The bent portion 422 is located on the bottom wall and extends from the side portion 421 toward the operating end 162, making the soft rubber part 42 as a whole L-shaped. The cable outlet 18 is provided on the side portion 421 and the bent portion 422, making the cable outlet 18 L-shaped. The portion of the outlet 18 located on the side 421 can avoid the wire body 22 during the retraction of the wire 20, and the portion of the outlet 18 located at the bend 422 can avoid the wire body 22 during the stretching of the wire 20, thus avoiding the risk of the wire body 22 rubbing against the outlet 18 and reducing the wear of the wire body 22.

[0053] In one embodiment, the side portion 421 extends away from the bend portion 421 to the top of the wall of the receiving groove 16 to prevent the user from tilting and pulling the plug 24 out along the side away from the outlet end. The cable 22 will contact the top of the wall corresponding to the outlet end of the receiving groove 16. Extending the side portion 421 to the top of the wall corresponding to the outlet end can reduce wear on the cable 22.

[0054] The connection between the side portion 421 and the bent portion 422 forms a second arc surface 423. The second arc surface 423 cooperates with the first arc surface 263 on the limiting member 26 to increase the angle at which the plug 24 rotates toward the receiving groove 16, and further reduce the angle between the plug 24 and the outer shell 12, so that the plug 24 can be stored in the receiving groove 16 under the action of the magnetic member 30.

[0055] In an optional example, the outer casing 12 includes a main casing 50 and a casing accessory 52 mounted on one end of the main casing 50. The casing accessory 52 has a receiving groove 16 and is made of hard plastic. The soft plastic part 42 and the casing accessory 52 achieve a convex-concave fit through a protrusion 46 and a recess, and are fixed together by two-color injection molding. During the production process, the soft plastic part 42 and the casing accessory 52 can be injection molded together first, and then the assembly of the soft plastic part 42 and the casing accessory 52 can be installed onto the main casing 50. The soft plastic part 42 and the casing accessory 52 will not be interfered with by the main casing 50 during the fixing process, which helps to reduce the difficulty of production.

[0056] The outer side of the housing accessory 52 is provided with a positioning protrusion 54, and the inner side of the main housing 50 is provided with a corresponding positioning groove 56. The positioning protrusion 54 is inserted into the positioning groove 56. During the installation of the housing accessory 52 to the main housing 50, the positioning protrusion 54 can be aligned with the positioning groove 56. The cooperation between the positioning protrusion 54 and the positioning groove 56 creates a positioning effect during the installation of the housing accessory 52 to the main housing 50, so as to accurately locate the installation position of the housing accessory 52. ​​At the same time, it also provides a limiting effect for the housing accessory 52 after installation. Since the housing accessory 52 has a symmetrical structure, it is easy to install the cable outlet 18 incorrectly. Therefore, the housing accessory 52 is provided with a foolproof protrusion, which is connected to the corresponding clearance groove on the main housing 50. For example, there is one foolproof protrusion, which is set perpendicular to the positioning protrusion 54.

[0057] The main housing 50 is provided with a control button 58, which is movably engaged with the main housing 50. The user can control the charging device 10 to charge or stop charging the electronic device by pressing the control button 58. The main housing 50 is provided with a mounting hole that penetrates the wall. The control button 58 includes a pressing part 60 that movably passes through the mounting hole and a limiting part 62 on one side of the pressing part 60. The limiting part 62 is located inside the main housing 50. The main housing 50 is provided with a protrusion 64 corresponding to the limiting part 62. The protrusion 64 blocks the limiting part 62 to limit the control button 58 and reduce the risk of the control button 58 detaching from the main housing 50.

[0058] In an optional example, the limiting part 62 is annular, including a first limiting part spaced apart from the pressing part 60 and a second limiting part connected between the first limiting part and the pressing part 60. There are two second limiting parts, and the two limiting parts 62 are respectively connected to the two ends of the first limiting part. The main housing 50 has protrusions 64 on the side of the first limiting part near the pressing part 60 and the side away from the pressing part 60, and protrusions 64 on the opposite sides of the two second limiting parts, so as to form a limiting effect on the limiting part 62 in two different directions. By setting the limiting part to annular, it is convenient to fix the limiting part, strengthen the fixation of the control button 58, and further enhance the stability of the control button 58.

[0059] In one embodiment, the telescopic cable module 14 further includes a take-up housing 66 and a cable reel 68. The take-up housing 66 is located inside the outer casing 12 and is fixed relative to the outer casing 12. The cable reel 68 is rotatably mounted inside the take-up housing 66, and one end of the cable 22 is wound around the cable reel 68. When the user pulls the cable 20 outward, the cable reel 68 rotates in one direction under the action of the cable 20, creating a cable release effect. When the cable reel 68 rotates in the opposite direction, it drives the cable 20 to retract, storing the cable 20 inside the take-up housing 66, creating a cable retraction effect.

[0060] The take-up housing 66 has an outlet 70 extending circumferentially therefrom, which is opposite to the cable outlet 18. One end of the cable 22 passes through the outlet 70 and the cable outlet 18 in sequence and extends to the outside of the housing 12. The receiving groove 16 has an opposite cable outlet end 161 and an operating end 162, with the cable outlet 18 located at the cable outlet end 161. Optionally, the outer contour of the housing 12 is rectangular, the cable outlet end 161 and the operating end 162 are arranged in the width direction of the housing 12, and the outlet 70 and the cable outlet 18 are opposite to each other in the length direction of the housing 12 and are spaced apart by a certain distance.

[0061] The outlet 70 extends circumferentially along the take-up housing 66. The outlet 70 includes a first end 701 and a second end 702 disposed opposite to each other. The first end 701 and the second end 702 are respectively located at both ends of the outlet 70 in its extension direction. The first end 701 is disposed closer to the outlet 18 than the second end 702. That is, in the length direction of the housing 12, the second end 702 is located on the side of the first end 701 away from the outlet 18. The outlet 70 extends from the second end 702 toward the first end 701 in a direction close to the outlet 18. Along the arrangement direction of the outlet end 161 and the operating end 162, the first end 701 is located between the outlet 18 and the operating end 162. That is, the first end 701 is closer to the operating end 162 than the outlet 18. This ensures that when the cable 22 is in contact with the inner wall of the outlet 18 near the first end 701 during the extension and retraction process, the cable 22 is still a certain distance away from the end face of the first end 701, so as to prevent the cable 22 from contacting the end face of the first end 701 during the extension and retraction process and causing wear.

[0062] The outlet 18 includes a first outlet side 181 and a second outlet side 182 arranged opposite to each other. The first outlet side 181 and the second outlet side 182 are spaced apart along the arrangement direction of the operating end 162 and the outlet end 161. The first outlet side 181 is arranged closer to the operating end 162 than the second outlet side 182. The first end 701 of the outlet 70 is located between the first outlet side 181 and the operating end 162 and is spaced apart from the first outlet side 181. This ensures that when the cable 22 contacts the first outlet side 181 of the outlet 18 during the extension and retraction process, the cable 22 is still spaced a certain distance from the end face of the first end 701 of the outlet 70, so as to prevent the cable 22 from contacting the end face of the first end 701 during the extension and retraction process and causing wear.

[0063] Optionally, along the arrangement direction of the operating end 162 and the outlet 161, the second end 702 of the outlet 70 and the second side 182 of the outlet are spaced apart, and the second side 182 of the outlet is located between the first side 181 of the outlet and the second end 702. When the cable 22 contacts the second side 182 of the outlet, the cable 22 is still spaced a certain distance from the end face of the second end 702, so that the cable 22 is always spaced a certain distance from the end faces of both ends of the outlet 70 during the extension and retraction process, so as to prevent the cable 22 from contacting the end face of the outlet 70 during the extension and retraction process and causing wear.

[0064] In an optional example, the wire 22 includes a wire segment located between the outlet 70 and the outlet 18. When the conductor 20 is in the maximum tension state, the wire segment is located between the end face of the first end 701 and the end face of the second end 702, and is spaced apart from the end face of the first end 701 and the end face of the second end 702, respectively, so that the wire 22 is spaced apart from the end faces of the first end 701 and the second end 702 during the extension and retraction movement, thereby reducing wear during the extension and retraction process of the wire 22.

[0065] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A charging device, characterized in that, The device includes an outer casing and a telescopic cable module installed within the outer casing. The outer casing has a receiving groove and a cable outlet connected to the receiving groove on its outer side. The telescopic cable module includes a wire that can extend or retract relative to the outer casing. The wire includes a wire body, a plug electrically connected to the wire body, and a limiting member located on the outer side of the wire body. The receiving groove is used to receive the plug. One end of the wire body is connected to the inside of the outer casing, and the other end passes through the cable outlet and connects to the plug. The limiting member is spaced apart from the plug. When the plug is retracted into the receiving groove, the limiting member is located within the receiving groove and outside the cable outlet.

2. The charging device according to claim 1, characterized in that, The limiting member includes two mutually perpendicular length directions, width directions, and thickness directions. The length direction of the limiting member is consistent with the length direction of the line body. The size of the limiting member in the width direction and / or the size in the thickness direction is greater than the size of the outlet.

3. The charging device according to claim 2, characterized in that, The receiving groove has a first direction. When the plug is housed in the receiving groove, the first direction of the receiving groove is consistent with the width direction of the limiting member. The maximum width of the limiting member in the width direction is h1, and the maximum width of the receiving groove in the first direction is h2, wherein 0.3mm≤h2-h1≤1mm; and / or, the maximum width of the limiting member in the width direction is h1, and the maximum dimension of the outlet in the first direction is h3, wherein h1-h3≥1mm.

4. The charging device according to claim 2, characterized in that, The limiting member includes a first end face, a second end face, and a side surface connecting the first end face and the second end face. The first end face and the second end face are located at opposite ends in the length direction of the limiting member, and the second end face is disposed close to the plug relative to the first end face. The side surface includes a first arc surface, which is connected to the first end face and located on one side in the thickness direction. When the plug is housed in the receiving groove, the first arc surface contacts the bottom wall of the receiving groove.

5. The charging device according to claim 4, characterized in that, The first arc surface includes a first side and a second side, the first side is connected to the first end face, and the second side is disposed relative to the first side and close to the second end face; in the length direction, the angle formed by the line connecting the first side and the second side and the line body is in the range of 30° to 55°.

6. The charging device according to claim 1, characterized in that, It also includes a soft rubber component, through which the cable outlet is disposed; the receiving groove has a cable outlet end and an operating end located on opposite sides, and the receiving groove has a clearance hole on the side near the cable outlet end, and the soft rubber component is fitted around the periphery of the clearance hole.

7. The charging device according to claim 6, characterized in that, The soft rubber component includes a side portion and a bent portion connected to one end of the side portion. The side portion is at least partially disposed on the wall of the cable outlet end. The bent portion extends from the side portion toward the operating end. The cable outlet is disposed on the side portion and the bent portion.

8. The charging device according to claim 7, characterized in that, The side portion is perpendicular to the bend portion, and the connection between the side portion and the bend portion forms a second arc surface; and / or, the end of the side portion away from the bend portion extends to the top of the receiving groove wall.

9. The charging device according to claim 6, characterized in that, The outer side of the soft rubber part has a protrusion, which is attached to and fixedly connected to the outer shell; and / or, the soft rubber part and the outer shell are integrally injection molded.

10. The charging device according to any one of claims 1-9, characterized in that, The receiving slot has a cable outlet and an operating end located on opposite sides. The cable outlet is located at the cable outlet. The telescopic cable module also includes a take-up shell with an outlet. The outlet is arranged opposite to the cable outlet. The outlet has a first end and a second end. The first end is located close to the cable outlet relative to the second end. Along the arrangement direction of the cable outlet and the operating end, the first end is located between the cable outlet and the operating end.

11. The charging device according to claim 10, characterized in that, The outlet has a first outlet side and a second outlet side that are arranged opposite to each other. The first outlet side is arranged closer to the operating end than the second outlet side, and the first end is spaced apart from the first outlet side.

12. The charging device according to claim 10, characterized in that, The telescopic cable module also includes a winding frame rotatably installed inside the take-up housing. One end of the cable is wound around the winding frame. The cable includes a cable segment located between the outlet and the exit port. When the conductor is in its maximum tension state, the cable segment is spaced apart from the first end and the second end, respectively.

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