Charging device

Abstract

The utility model discloses a charging device, which comprises a shell, a winding assembly and a data line, and is characterized in that the shell comprises a shell body, and a first limiting part and a second limiting part which are arranged on the shell body, and the shell body is provided with an accommodating space; the winding assembly is arranged in the accommodating space; the data line comprises a telescopic section and an external section connected with the telescopic section, the telescopic section is at least partially wound around the winding assembly, and the external section is arranged outside the containing space and provided with a first matching part and a second matching part at intervals. Through the limiting cooperation of the first cooperation part and the first limiting part and the limiting cooperation of the second cooperation part and the second limiting part, the external section can form a stable handle, so that the charging device can be conveniently lifted or hung, and the convenience is greatly improved; according to the charging device, the limiting matching between the external section and the shell is removed, so that a user can adjust the length of the data line as required, and therefore, the data line and the charging device can adapt to various use scenes by switching the limiting matching state between the external section and the shell.

Description

Technical Field

[0001] This application relates to the field of electronic device technology, and more particularly to a charging device. Background Technology

[0002] With the widespread use of electronic products such as mobile phones and tablets, charging devices have become essential tools for people's daily lives and travel. Because data cables are prone to tangling and knotting, and inconvenient to store, many charging devices use retractable data cables, which not only offer greater flexibility but also effectively solve the problem of messy cables. However, most current charging devices with retractable data cables lack handles, making them inconvenient to carry and resulting in a poor user experience. Utility Model Content

[0003] This application provides a charging device that solves the technical problem of poor portability of charging devices equipped with retractable charging cables.

[0004] This application provides a charging device, including a housing, a winding assembly, and a data cable. The housing includes a housing body and a first limiting portion and a second limiting portion disposed on the housing body, with an accommodating space inside the housing body. The winding assembly is disposed within the accommodating space. The data cable includes a telescopic section and an external section connected to the telescopic section. The telescopic section is at least partially accommodated in the accommodating space and wound around the winding assembly, while the external section is disposed outside the accommodating space. The external section has a first mating portion and a second mating portion, which are spaced apart. The first mating portion can engage with the first limiting portion, and the second mating portion can engage with the second limiting portion, so that the external section can be configured as a handle.

[0005] Based on the charging device provided in this application, the outer section forms a stable handle through the limiting cooperation of the first limiting part and the first mating part, the second limiting part and the second mating part. Users can lift or hang the charging device using the handle of the outer section, greatly improving convenience and eliminating the need for an additional handle, effectively simplifying the structure of the charging device. By releasing the limiting cooperation of the first limiting part and the first mating part, the second limiting part and the second mating part, the outer section can move freely, allowing users to adjust the length of the data cable as needed. Thus, by switching the limiting cooperation state between the outer section and the housing, the data cable can be adapted to various usage scenarios, not only improving the portability of the charging device but also enhancing the product's practicality and effectively improving the user experience. Attached Figure Description

[0006] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0007] Figure 1 This is a schematic diagram of the structure of a charging device according to an embodiment of this application;

[0008] Figure 2 This is an exploded view of a charging device according to an embodiment of this application;

[0009] Figure 3 This is a cross-sectional schematic diagram of a charging device according to an embodiment of this application;

[0010] Figure 4 for Figure 3 A magnified view of a portion of point A in the middle;

[0011] Figure 5 This is a partial structural schematic diagram of another charging device according to an embodiment of this application;

[0012] Figure 6 This is a partial structural schematic diagram of yet another charging device according to an embodiment of this application;

[0013] Figure 7 for Figure 5 A partial cross-sectional view of the charging device;

[0014] Figure 8 for Figure 6 A partial cross-sectional view of the charging device;

[0015] Figure label:

[0016] 1. Charging device;

[0017] 10. Housing; 20. Winding assembly; 30. Data cable;

[0018] 11. Shell body; 12. First limiting part; 13. Second limiting part; 14. Stop; 31. Telescopic section; 32. External section; 33. First mating part; 34. Second mating part; 35. Second strain release part;

[0019] 110. Mounting sidewall; 111. Wire passage opening; 112. Wire receiving groove; 113. First mounting groove; 114. Sliding groove; 115. Second mounting groove; 121. First limiting groove; 122. First magnetic suction element; 131. Elastic buckle; 132. Connector; 133. Mounting element; 134. Limiting protrusion; 135. Elastic element; 321. Connecting terminal; 322. Wire body; 331. First strain release part; 332. Second magnetic suction element; 341. Second limiting groove; 342. Third limiting groove. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0021] With the widespread use of smart mobile devices, the design of charging devices is constantly evolving to meet the growing needs of users. To improve the applicability of charging devices, many charging devices with retractable data cables have emerged. The inventors have found that while retractable data cables in charging devices primarily focus on the charging function, they often lack handles, making them inconvenient for users to hold and carry, and thus lacking additional practicality.

[0022] To address the above issues, this application proposes a charging device with a retractable data cable that can be configured as a handle to enhance the product's portability and practicality. The charging device is used to charge external devices, such as mobile phones, tablets, and wireless headphones.

[0023] Please see Figures 1-2 This application provides a charging device 1, which includes a housing 10, a winding assembly 20, and a data cable 30. Exemplarily, the charging device in this application can be a power bank, charger, desktop power strip, etc.

[0024] Please continue reading. Figures 1-2 The housing 10 includes a housing body 11, a first limiting part 12, and a second limiting part 13. The housing body 11 has a receiving space, which provides installation space for the winding assembly 20. A portion of the data cable 30 is housed within the receiving space of the housing body 11. The housing body 11 is provided with a cable passage opening 111 communicating with the receiving space. Another portion of the data cable 30 passes through the cable passage opening 111 and extends out of the housing body 11. The first limiting part 12 and the second limiting part 13 are both provided on the housing body 11 and are used to limit and cooperate with different parts of the data cable 30, so that the data cable 30 has the function of a handle.

[0025] The housing body 11 includes a bottom shell and a top cover. One side of the bottom shell is open, and the top cover closes to the open side of the bottom shell, defining an accommodating space together with the bottom shell, thereby facilitating the assembly of the winding assembly 20 into the housing body 11. The bottom shell and the top cover can be connected by adhesive bonding, or they can be detachably connected by snap-fit ​​connections, screw connections, or other means.

[0026] Please see Figure 3 The winding assembly 20 is used to house the data cable 30 and is located within the receiving space. The data cable 30 includes a telescopic section 31 and an external section 32 connected to the telescopic section 31. The telescopic section 31 is at least partially housed within the receiving space and wound around the winding assembly 20, which provides housing for the telescopic section 31. Optionally, the winding assembly 20 includes a winding spool (not shown) and a conductive element (not shown). The conductive element is disposed on the winding spool and is used to achieve electrical connection between the telescopic section 31 and other electronic components in the charging device 1. The telescopic section 31 is electrically connected to the conductive element, and the telescopic section 31 is wound around the periphery of the winding spool, effectively preventing the telescopic section 31 from tangling. The conductive element can be, exemplarily, a conductive slip ring. The user can pull the external section 32, causing the telescopic section 31 to extend from the receiving space through the cable opening 111 and rotating the winding spool relative to the housing 10, thereby adjusting the external length of the data cable 30.

[0027] The external section 32 includes a connecting terminal 321 and a cable 322. One end of the cable 322 is connected to the telescopic section 31, and the other end is connected to the connecting terminal 321. The connecting terminal 321 is used to connect to an external device. Taking the charging device 1 as a power bank as an example, the power bank also includes a power supply body, which is located in the receiving space. The telescopic section 31 is electrically connected to the power supply body through a conductive element. The connecting terminal 321 can be plugged into and connected to an external device, thus realizing electrical conduction between the power supply body and the external device, thereby supplying power to the external device.

[0028] Understandably, the external section 32 remains outside the receiving space, while the telescopic section 31 can be completely retracted into the receiving space, or, under the pulling force of the external section 32, a portion of the telescopic section 31 can extend out of the receiving space through the cable opening 111. In actual use, users can adjust the external length of the data cable 30 as needed to adapt to various usage scenarios such as short-distance charging and long-distance connection, thereby improving the practicality of the charging device 1.

[0029] Furthermore, the outer segment 32 is provided with a first mating part 33 and a second mating part 34, which are spaced apart. The first limiting part 12 can engage with or disengage from the first mating part 33, and the second limiting part 13 can engage with or disengage from the second mating part 34. When the first mating part 33 engages with the first limiting part 12 and the second mating part 34 engages with the second limiting part 13, both ends of the outer segment 32 are fixed, allowing the portion between the first mating part 33 and the second mating part 34 of the outer segment 32 to be configured as a handle. Users can lift or hang the charging device by carrying the outer segment 32 for easy portability. Compared to configuring an additional handle rope, the outer segment 32 as a handle simplifies the structure of the charging device 1. Furthermore, since the data cable 30 has a certain degree of rigidity, it is less prone to twisting or turning when used as a handle, improving the user experience. When the first mating part 33 and the first limiting part 12 are released from their limits, and the second mating part 34 and the second limiting part 13 are released from their limits, the telescopic part 31 can be pulled out of the shell body 11 by pulling the external section 32, and the external length of the data cable 30 can be flexibly adjusted. The connection terminal 321 of the external section 32 can be connected to an external device to charge the external device.

[0030] The limiting fit structure between the external segment 32 and the shell body 11 in the embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0031] Please see Figures 2-4 In one embodiment of this application, the housing body 11 includes two adjacent mounting sidewalls 110, one of which is a first sidewall and the other is a second sidewall. A first limiting portion 12 is disposed on the first sidewall, and a second limiting portion 13 is disposed on the second sidewall. Thus, the first limiting portion 12 and the second limiting portion 13 are respectively disposed on the two adjacent mounting sidewalls 110 of the housing body 11, making it easier to form the data cable 30 into a handle and preventing excessive concentration at the two connection points between the data cable 30 and the housing 10. This disperses stress and helps enhance the stability and durability of the housing body 11.

[0032] In other embodiments, the first limiting part 12 and the second limiting part 13 are both located on the same mounting side wall 110, thereby making the other mounting side wall 110 relatively flat, less likely to rub against external objects, and providing a better grip.

[0033] In some embodiments, when the first mating part 33 is engaged with the first limiting part 12, the outer segment 32 adjacent to the first mating part 33 is arranged parallel to the first sidewall; when the second mating part 34 is engaged with the second limiting part 13, the outer segment adjacent to the second mating part 34 is arranged perpendicular to the second sidewall. Optionally, the first sidewall is perpendicular to the second sidewall, and when the second mating part 34 is engaged with the second limiting part 13, the outer segment 32 adjacent to the second mating part 34 is arranged parallel to the first sidewall.

[0034] For example, the first limiting part 12 and the first mating part 33 form a snap-fit ​​structure extending along the wall direction parallel to the first side wall, and the second limiting part 13 and the second mating part 34 form a plug-in structure perpendicular to the wall direction of the second side wall. It can be understood that the second limiting part 13 occupies less space on the shell body 11, which helps to maintain the compactness of the shell 10 and reduce the overall size.

[0035] In the above structure, the thread 322 connected to the first mating part 33 can extend out of the shell body 11 along the wall direction parallel to the first side wall, and the thread 322 connected to the second mating part 34 can extend out of the shell body 11 along the wall direction perpendicular to the second side wall. The thread directions of the thread 322 on both sides of the handle are basically parallel. Thus, when the outer section 32 is configured as a handle, the thread 322 has a low degree of bending relative to the first mating part 33 and the second mating part 34, and the risk of the thread 322 breaking under force is small, which helps to extend the service life of the thread 322.

[0036] Furthermore, the first limiting part 12 includes a first limiting groove 121 disposed on the shell body 11, and the first mating part 33 can be an SR (strain relief) formed on the data cable 30. SRs are commonly used to eliminate stress in the cable and can also be used to create specific structures on the data cable 30. In this embodiment, the data cable 30 can be provided with multiple SRs. SRs can be used to reduce the stress generated in the data cable 30 when the external section 32 is used as a handle, or as a limiting structure for the data cable 30. Optionally, the SR can be disposed on the connecting terminal 321 and integrally formed with the connecting terminal 321, or the SR can be disposed on the cable body 322 and integrally formed with the cable body 322.

[0037] For example, the first mating part 33 includes a first strain relief part 331 disposed on the thread 322 of the outer section 32. The first strain relief part 331 can engage with the groove wall of the first limiting groove 121 to limit the first strain relief part 331. It is understood that when the outer section 32 is used as a handle, the thread 322 may be subjected to pulling, twisting or bending forces. The first strain relief part 331 can reduce or disperse the stress generated by the thread 322 when subjected to external forces, and prevent the stress from being transmitted to the core of the thread 322, thereby protecting the thread 322.

[0038] In some embodiments, the first limiting groove 121 and the first strain release part 331 are engaged in a plug-in or plug-out manner. In the plugging direction of the first limiting groove 121, the groove cross-section of the first limiting groove 121 gradually decreases. The outer contour shape of the first strain release part 331 matches the first limiting groove 121. Therefore, when the external section 32 is configured as a handle, the first strain release part 331 is further abutted against the first limiting groove 121 after being pulled, which reduces the probability that the first strain release part 331 will disengage from the first limiting groove 121 under force.

[0039] After the first strain release part 331 is inserted into the first limiting groove 121, the first strain release part 331 and the first limiting groove 121 are engaged and limited, thereby fixing one end of the external section 32 to facilitate the formation of a handle. The first limiting groove 121 extends in a direction parallel to the wall of the shell body 11. The first strain release part 331 is kept within the first limiting groove 121, making the structure of the charging device 1 more compact. Furthermore, the first strain release part 331 is engaged and connected to the first limiting groove 121 in a direction parallel to the wall of the shell body 11. After the first strain release part 331 is placed in the first limiting groove 121, the user can complete the insertion and removal operation by pushing the first strain release part 331 in a direction parallel to the wall of the shell body 11, making the operation simple and convenient. In practical use, when a force is applied to the first strain release part 331 that is opposite to the insertion direction, the first strain release part 331 can disengage from the first limiting groove 121, allowing the first mating part 33 to move freely. At this time, applying a pulling force to the external section 32 can pull the telescopic section 31 out of the shell body 11.

[0040] The first limiting groove 121 is open on both sides along its extension direction to facilitate the passage of the outer segment 32 through the first limiting groove 121. In some embodiments, the wire passage opening 111 is provided on the side wall of the shell body 11 for defining the first limiting part 12 and is spaced apart from the first limiting part 12. The shell body 11 is provided with a wire receiving groove 112 connecting the wire passage opening 111 and the first limiting groove 121. In actual use, after the first strain release part 331 is engaged with the first limiting groove 121, at least a portion of the wire 322 of the outer segment 32 is accommodated in the wire receiving groove 112 to avoid damage caused by collision with external objects due to protrusion of the shell body 11, thereby improving the aesthetics of the charging device 1 and the safety of the data cable 30.

[0041] In some embodiments, the data cable 30 further includes a second strain relief portion 35 for sealing the cable passage opening 111. The second strain relief portion 35 is located at the junction of the telescopic section 31 and the outer section 32. The second strain relief portion 35 can engage with the cable passage opening 111 to restrict the outer section 32 from extending into the cable passage opening 111. Furthermore, the second strain relief portion 35 can seal the cable passage opening 111, achieving not only an aesthetically pleasing concealment effect but also preventing dust and foreign objects from entering the product.

[0042] The diameter of the wire passage opening 111 gradually decreases from the outside of the shell body 11 towards the inside of the shell body 11. The outer contour of the second strain release part 35 matches the wire passage opening 111, thus preventing the second strain release part 35 from being over-positioned and entering the receiving space. The shell 10 also includes a stop member 14, which is installed on the inner wall of the shell body 11 corresponding to the wire passage opening 111. The stop member 14 has an opening communicating with the wire passage opening 111 for the telescopic section 31 to pass through. The stop member 14 partially blocks the wire passage opening 111. The second strain release part 35 is engaged with the wire passage opening 111 and abuts against the stop member 14, thus the stop member 14 can further prevent the second strain release part 35 from entering the receiving space.

[0043] In some other embodiments, the second strain release part 35 may also be provided with a first wall surface and a second wall surface that are connected to each other. The first wall surface and the second wall surface together form a first stepped surface. The first wall surface is used to engage with the hole wall of the wire opening 111, and the second wall surface is used to abut against the outer wall surface of the shell body 11. In this way, the second strain release part 35 can be securely sealed to the wire opening 111.

[0044] Please see Figure 4 In one embodiment of this application, the second limiting portion 13 includes an elastic buckle 131 disposed on the housing body 11, and the external segment 32 includes a connecting terminal 321 for connecting an external device. Exemplarily, the connecting terminal 321 can be a Micro USB connector, a TP-C connector, or a Lightning connector. The second mating portion 34 includes a second limiting groove 341 disposed on the connecting terminal 321. The elastic buckle 131 engages with the second limiting groove 341 to limit the connection terminal 321. There are two second limiting grooves 341, located on opposite sides of the connecting terminal 321, to form a stable connection structure between the second mating portion 34 and the second limiting portion 13.

[0045] Furthermore, the shell body 11 is provided with a first mounting groove 113, and an elastic buckle 131 is disposed in the first mounting groove 113. When the elastic buckle 131 is engaged with the second limiting groove 341, the connecting terminal 321 is at least partially inserted into the first mounting groove 113. The first mounting groove 113 has a mounting hole communicating with the outside. After the connecting terminal 321 is inserted into the first mounting groove 113 through the mounting hole, the second limiting groove 341 engages with the elastic buckle 131. Specifically, the second limiting part 13 also includes a connector 132 and a mounting member 133. The connector 132 is inserted into the end of the elastic buckle 131 away from the mounting hole and is used to accommodate the end of the connecting terminal 321. The mounting member 133 abuts against the outer wall surface of the elastic buckle 131 and the connector 132 and is installed in the first mounting groove 113 to fix the relative position of the elastic buckle 131 and the connector 132 relative to the first mounting groove 113.

[0046] In specific implementation, the outer wall surface of the elastic buckle 131 and the outer wall surface of the connector 132 form a second stepped surface, and the mounting part 133 has a third stepped surface. The mounting part 133 is sleeved on the outside of the elastic buckle 131 and the connector 132, and the third stepped surface abuts against the second stepped surface. The mounting part 133 is installed in the first mounting groove 113 by fasteners. In this way, the elastic buckle 131 is prevented from loosening and falling off, and a stable connection is formed between the elastic buckle 131, the connector 132, the mounting part 133 and the shell body 11. The separate arrangement of the elastic buckle 131, the connector 132 and the mounting part 133 facilitates molding and demolding.

[0047] Please see Figures 5-6 In another embodiment of this application, a groove 114 is provided on the shell body 11, and the outer segment 32 has a connecting terminal 321. The connecting terminal 321 is slidably connected to the groove 114. The groove 114 is open on both sides along its extension direction, and the connecting terminal 321 can slide out of the groove 114. The second limiting part 13 is provided corresponding to the groove 114 and can limit the connecting terminal 321 located in the groove 114. When the connecting terminal 321 is located in the groove 114, the groove 114 partially encloses the periphery of the connecting terminal 321, so that after the connecting terminal 321 is removed from the groove 114, the wire of the outer segment 32 or the telescopic segment 31 can be detached from the groove 114.

[0048] Please see Figures 7-8The groove wall of the slide 114 is provided with a second mounting groove 115. The second limiting part 13 includes a limiting protrusion 134 and an elastic member 135. The two ends of the elastic member 135 are respectively connected to the limiting protrusion 134 and the groove wall of the second mounting groove 115. The elastic member 135 can drive the limiting protrusion 134 to move elastically. Optionally, the elastic member 135 can be a spring. Wherein, when no external force is applied, the limiting protrusion 134 extends at least partially out of the second mounting groove 115. When the elastic member 135 is compressed, the limiting protrusion 134 moves toward the elastic member 135 and can be housed in the second mounting groove 115. Further, the second mating part 34 includes a third limiting groove 342 provided on the connecting terminal 321. The elastic member 135 drives the limiting protrusion 134 to be inserted into the third limiting groove 342. The movement of the limiting protrusion 134 limits or releases the connection terminal 321 located in the slide 114.

[0049] It should be noted that in this embodiment, the limiting protrusion 134 allows the connecting terminal 321 to slide unidirectionally in the slide groove 114, thereby controlling the pull-out direction of the connecting terminal 321 to be opposite to the force direction of the connecting terminal 321 when the external section 32 acts as a handle. The limiting protrusion 134 has a first inclined surface. When the limiting protrusion 134 is inserted into the third limiting groove 342, the connecting terminal 321 can slide relative to the first inclined surface in the first direction. The connecting terminal 321 at least partially abuts against the first inclined surface and applies pressure to the limiting protrusion 134. During this process, the elastic member 135 is gradually compressed, eventually causing the limiting protrusion 134 to be received in the second mounting groove 115 and withdrawn from the third limiting groove 342. The connecting terminal 321 can then disengage from the slide groove 114 in the first direction.

[0050] Furthermore, the limiting protrusion 134 restricts the movement of the connecting terminal 321 along the second direction. The end of the limiting protrusion 134 opposite to the first inclined surface is provided with a second surface, which forms a stable resistance surface and can effectively prevent the connecting terminal 321 from moving along the second direction. The first direction is opposite to the second direction.

[0051] Optionally, the second surface extends in a direction perpendicular to the first direction, and after the limiting protrusion 134 is inserted into the third limiting groove 342, the second surface is adapted to the groove wall of the third limiting groove 342. Of course, the second surface and the third limiting groove 342 can also adopt other mutually abutting structures, which are not limited here.

[0052] Based on the limiting fit structure in the above embodiments, the outer segment 32 can form a handle between the first fitting part 33 and the second fitting part 34 through the limiting fit. In order to enhance the stability of the connection, this application further provides a detachable installation structure at the limiting fit position. The detachable installation structure is not limited to magnetic connection structure, riveting connection structure, etc.

[0053] For example, the first limiting part 12 includes a first magnetic member 122, and the first mating part 33 includes a second magnetic member 332, wherein the first magnetic member 122 and the second magnetic member 332 are magnetically mated. Please return Figure 4 As a feasible implementation, the first magnetic suction member 122 is installed on the shell body 11 corresponding to the first limiting groove 121, and the second magnetic suction member 332 is disposed on the first strain release part 331. The first strain release part 331 is engaged with the first limiting groove 121. The first magnetic suction member 122 and the second magnetic suction member 332 magnetically cooperate, thereby making the connection between the first limiting part 12 and the first cooperating part 33 more stable.

[0054] Optionally, the second limiting part 13 includes a third magnetic attracting member, and the second mating part 34 includes a fourth magnetic attracting member. The third magnetic attracting member and the fourth magnetic attracting member are magnetically attracted to each other, thereby making the connection between the second limiting part 13 and the second mating part 34 more stable.

[0055] In the accompanying drawings of this embodiment, the same or similar reference numerals correspond to the same or similar components. In the description of this application, it should be understood that if terms such as "upper," "lower," "left," and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, they are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the accompanying drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0056] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A charging device, characterized in that, include: The shell includes a shell body and a first limiting part and a second limiting part disposed on the shell body, and the shell body has an accommodating space inside; A winding assembly is disposed within the receiving space; as well as A data cable includes a telescopic section and an external section connected to the telescopic section, the telescopic section being at least partially housed in the receiving space and wound around the winding assembly, and the external section being disposed outside the receiving space; The outer segment is provided with a first mating part and a second mating part, which are spaced apart. The first mating part can be limited to the first limiting part, and the second mating part can be limited to the second limiting part, so that the outer segment can be configured as a handle.

2. The charging device according to claim 1, characterized in that, The shell body includes an adjacent first sidewall and a second sidewall, with the first limiting portion disposed on the first sidewall and the second limiting portion disposed on the second sidewall.

3. The charging device according to claim 2, characterized in that, When the first mating part is engaged with the first limiting part, the outer segment adjacent to the first mating part is arranged parallel to the first side wall. When the second mating part is engaged with the second limiting part, the outer segment adjacent to the second mating part is arranged perpendicular to the second side wall.

4. The charging device according to claim 1, characterized in that, The first limiting part includes a first limiting groove disposed on the shell body, and the first mating part includes a first strain release part disposed on the outer section. The first strain release part can engage with the groove wall of the first limiting groove to limit the first strain release part.

5. The charging device according to claim 4, characterized in that, The first limiting groove extends in a direction parallel to the wall surface of the shell body, and the first strain release part is snapped into the first limiting groove in a direction parallel to the wall surface of the shell body.

6. The charging device according to claim 1, characterized in that, The second limiting part includes an elastic buckle disposed on the housing body, the external section includes a connecting terminal for connecting an external device, and the second mating part includes a second limiting groove disposed on the connecting terminal. The elastic buckle engages with the second limiting groove to limit the connection terminal.

7. The charging device according to claim 6, characterized in that, The shell body is provided with a first mounting groove, and the elastic buckle is disposed in the first mounting groove. When the elastic buckle is engaged with the second limiting groove, the connecting terminal is at least partially inserted into the first mounting groove.

8. The charging device according to claim 1, characterized in that, The first limiting part includes a first magnetic member, and the first mating part includes a second magnetic member, wherein the first magnetic member and the second magnetic member are magnetically mated; and / or The second limiting part includes a third magnetic member, and the second mating part includes a fourth magnetic member, wherein the third magnetic member and the fourth magnetic member are magnetically mated together.

9. The charging device according to claim 1, characterized in that, The shell body is provided with a wire passage opening communicating with the accommodating space. The telescopic section passes through the wire passage opening. A second strain release part is provided at the junction of the telescopic section and the external section. The second strain release part can engage with the wire passage opening to restrict the external section from extending into the wire passage opening, and the second strain release part can block the wire passage opening.

10. The charging device according to claim 9, characterized in that, The wire-passing opening is provided on the side wall of the shell body for defining the first limiting part, and is spaced apart from the first limiting part; The shell body is also provided with a wire receiving groove, which is connected to the wire passage opening and extends from the wire passage opening to the first limiting part. The wire receiving groove is used to receive the wire of the external section.

11. The charging device according to claim 1, characterized in that, The shell body is provided with a sliding groove, and the external section includes a connecting terminal, which is slidably disposed in the sliding groove; The second mating part includes a third limiting groove disposed on the connecting terminal. The groove wall of the sliding groove is provided with a second mounting groove. The second limiting part includes a limiting protrusion and an elastic member. The two ends of the elastic member are respectively connected to the limiting protrusion and the groove wall of the second mounting groove. The elastic member drives the limiting protrusion to be inserted into the third limiting groove.

12. The charging device according to claim 11, characterized in that, The limiting protrusion has a first inclined surface. When the limiting protrusion is inserted into the third limiting groove, the connecting terminal can slide relative to the first inclined surface in a first direction so that the limiting protrusion exits from the third limiting groove. The limiting protrusion also restricts the connecting terminal from moving in a second direction, which is opposite to the second direction.

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