Mobile power supply

By introducing plug-in devices and clamping devices into the mobile power supply, the problems of inconvenient removal and unstable connection of the charging plug are solved, convenient plug operation and stable electrical connection are achieved, and user experience is improved.

CN223194430UActive Publication Date: 2025-08-05SHENZHEN WEIDULI TECH CO LTD
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Patent Information

Application Number
CN202422030676.7
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-08-20
Publication Date
2025-08-05
Estimated Expiration
2034-08-20

AI Technical Summary

Technical Problem

The existing mobile power charging plug is inconvenient to remove and has poor connection stability, which is easy to loosen, affects charging efficiency and may damage the equipment.

Method used

A mobile power supply including a plug-in device and a clamping device is designed. Through the coordination of the plug column, a clamping projection, a clamping slot and a reset member, the plug is removable and stable connection, and the plug is simplified by the interaction between the slider and the reset member.

Benefits of technology

It improves the convenience of disassembly and assembles the plug, ensures that the plug does not loosen or fall off during use, enhances the stability of the connection, simplifies the operation process, and avoids the complexity of the traditional locking mechanism.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to a mobile power supply, which is provided with a plugging device and a clamping device, so that a user can easily plug in or pull out a plug from a socket on a shell without using extra tools, and the convenience of disassembly and assembly is greatly improved. By utilizing the interaction between the clamping bulge and the clamping groove and the elasticity of the reset piece, the plug is ensured not to loosen or fall off due to the action of external force in the normal use process, and the connection stability is effectively enhanced. A user can lock and unlock the plug only by simply pushing the sliding piece, the operation is simple and fast, and inconvenience brought by a complex locking mechanism in a traditional design is avoided.
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Description

Technical Field

[0001] The utility model relates to the field of electronic devices, especially to mobile power supplies. Background Art

[0002] With the popularization of mobile devices and the development of technology, as a portable charging solution, the market demand for mobile power supplies has been continuously increasing. To better meet the needs of users, many mobile power supplies are designed with the function of built-in charging plugs to enable direct insertion into a power socket for charging without the need for additional data cables or adapters. This design improves the portability and practicality of the product.

[0003] However, there are still some deficiencies in the existing designs of mobile power supplies, especially in the design of charging plugs. Although some mobile power supplies are equipped with detachable charging plugs, the disassembly methods of these plugs are often too complex, causing inconvenience to users. In addition, due to limitations in structural design, the connection between such plugs and the main body of the mobile power supply is prone to looseness, which not only affects the charging efficiency but may also damage the device. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is to provide a mobile power supply that can solve the problems of inconvenient disassembly of the charging plug on the mobile power supply and poor connection stability of the plug.

[0005] The utility model provides a mobile power supply, which includes:

[0006] A housing, on which a socket is provided;

[0007] A plug-in device, which includes a plug and a plug post, and the plug post is arranged on the plug;

[0008] A clamping device, which includes a sliding member, a reset member, a clamping protrusion and a clamping groove. The sliding member is slidably arranged on the housing, the reset member is drivingly connected to the sliding member, one of the clamping protrusion and the clamping groove is arranged on the plug post, and the other of the clamping protrusion and the clamping groove is arranged in the socket; and

[0009] A conduction device, which includes a conductive pin and a conductive socket, one of the conductive pin and the conductive socket is arranged on the plug post, and the other of the conductive pin and the conductive socket is arranged in the socket;

[0010] When the insertion post is detachably inserted into the socket, the conductive pin is detachably inserted into the conductive socket. The reset member drives the sliding member to slide, so that the engaging protrusion engages with the engaging groove to lock the position of the plug in the socket. Further, the conductive pin is inserted and electrically connected to the conductive socket. When the sliding member slides against the elastic force of the reset member, the engaging protrusion disengages from the engaging groove, thereby unlocking the plug.

[0011] Preferably, the engaging device further includes a plurality of guide posts and a plurality of guide holes. At least one of the guide posts is disposed in each of the guide holes. When the sliding member slides, the guide posts slide in the guide holes.

[0012] Among them, each of the guide posts is disposed in the housing, and each of the guide holes is formed in the sliding member; or

[0013] Each of the guide posts is disposed on the sliding member, and each of the guide holes is formed in the housing.

[0014] Preferably, the engaging device further includes a guiding member and a plurality of guiding threaded members. Each of the guiding threaded members passes through the housing, and each of the guiding threaded members passes through each of the guide posts and is screwed to the guiding member, so that the sliding member is limited between the guiding member and the inner wall of the housing.

[0015] Preferably, an avoidance hole is formed in the side wall of the socket. The engaging protrusion is disposed on the sliding member, and the engaging protrusion passes through the avoidance hole.

[0016] Preferably, the engaging groove is located on the insertion post;

[0017] The engaging groove includes a guiding-in groove, a guiding groove and a locking groove that are sequentially connected. The guiding-in groove is located at the edge of the insertion post, and the groove width of the guiding-in groove gradually decreases in the direction close to the guiding groove. The guiding groove is recessed in the groove width direction to form the locking groove.

[0018] Preferably, a positioning arc surface is provided on the engaging protrusion.

[0019] Preferably, a profiling groove is further formed in the housing, and the profiling groove is adapted to the plug.

[0020] Preferably, a key hole is formed in the housing. The engaging device further includes a key. The key is disposed on the sliding member, and the key is exposed in the key hole.

[0021] Preferably, the length extension direction of the sliding member is the same as the width direction of the housing; and / or

[0022] The pressing direction of the button is perpendicular to the insertion direction of the plug.

[0023] Preferably, the mobile power supply also includes a battery, a circuit board, a power button and a power cord. The battery and the circuit board are both arranged in the shell, the power button is slidably arranged on the shell, the circuit board is electrically connected to the battery, the power button and the power cord respectively, and a charging head is provided on the power cord.

[0024] The implementation of this utility model has the following beneficial effects:

[0025] This utility model relates to a mobile power supply. By providing a plug-in device and a latching device, the user can easily insert and remove a plug from a socket on a housing without the need for additional tools, significantly improving assembly and disassembly convenience. The interaction between the latching protrusion and the latching groove, as well as the elastic force of the reset element, ensures that the plug will not loosen or fall off due to external forces during normal use, effectively enhancing the stability of the connection. The user simply pushes a sliding member to lock and unlock the plug, making the operation simple and quick, avoiding the inconvenience caused by the complex locking mechanism in traditional designs. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The above and other objects, features and advantages of the present invention will become more apparent by describing in more detail exemplary embodiments of the present invention in conjunction with the accompanying drawings, wherein the same reference numerals generally represent the same components in the exemplary embodiments of the present invention.

[0027] Figure 1 This is a schematic diagram of the structure of a mobile power supply in some embodiments of the present utility model;

[0028] Figure 2 From another perspective Figure 1 The structural diagram of the mobile power supply shown;

[0029] Figure 3 is an exploded view of a mobile power supply in some embodiments of the present invention;

[0030] Figure 4 From another perspective Figure 3 Exploded view of the power bank shown;

[0031] Figure 5 2 is a cross-sectional view of a mobile power supply in some embodiments of the present invention. DETAILED DESCRIPTION

[0032] Embodiments of the present utility model will be described in more detail below with reference to the accompanying drawings. Although embodiments of the present utility model are shown in the drawings, it should be understood that the present utility model can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided so that the present utility model will be more thorough and complete, and can fully convey the scope of the present utility model to those skilled in the art.

[0033] It should be understood that although the terms "first", "second", "third", etc. may be used in the present utility model to describe various information, such information should not be limited to these terms. These terms are only used to distinguish information of the same type from each other. For example, without departing from the scope of the present utility model, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, the meaning of "plurality" is two or more unless otherwise specifically defined.

[0034] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model.

[0035] Unless otherwise clearly defined and limited, the terms "mounted", "connected", "connected to", "fixed", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and may be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0036] Figure 1 The mobile power supply 10 in some embodiments of the present utility model is shown. The mobile power supply 10 can be charged and can charge electrical equipment or electrical terminals, etc.

[0037] Such as Figures 1 to 5As shown in the figure, the mobile power supply 10 includes a housing 1, a plug-in device 2, a clamping device 3, and a conduction device 4. The housing 1 is used to accommodate the internal circuit board and other components. The plug-in device 2 is detachably inserted into the housing 1 and is used to plug into an external power supply, so that the external power supply is electrically connected to the plug-in device 2. The clamping device 3 is used to clamp or release the plug-in device 2 when needed. The conduction device 4 is used to electrically connect the components on the housing 1 for charging and discharging to the plug-in device 2 when the plug-in device 2 is inserted into the housing 1. Thus, when the plug-in device 2 is inserted into the housing 1 and the plug-in device 2 is plugged into an external power supply, the external power supply will be electrically connected to the components on the housing 1 for charging and discharging through the plug-in device 2 and the conduction device 4.

[0038] As Figures 1 to 5 shown in the figure, a socket 11 is provided on the housing 1. The plug-in device 2 includes a plug 21 and a plug post 22, and the plug post 22 is provided on the plug 21. The clamping device 3 includes a sliding member 31, a reset member 32, a clamping protrusion 33, and a clamping groove 34. The sliding member 31 is slidably provided on the housing 1, the reset member 32 is drivingly connected to the sliding member 31, one of the clamping protrusion 33 and the clamping groove 34 is provided on the plug post 22, and the other of the clamping protrusion 33 and the clamping groove 34 is provided in the socket 11.

[0039] The conduction device 4 includes a conductive pin 41 and a conductive socket 42. One of the conductive pin 41 and the conductive socket 42 is provided on the plug post 22, and the other of the conductive pin 41 and the conductive socket 42 is provided in the socket 11;

[0040] When the plug post 22 is detachably inserted into the socket 11, the conductive pin 41 is detachably inserted into the conductive socket 42. The reset member 32 drives the sliding member 31 to slide, so that the clamping protrusion 33 is engaged with the clamping groove 34 to lock the position of the plug 21 in the socket 11, and then the conductive pin 41 is inserted and electrically connected to the conductive socket 42. When the sliding member 31 slides against the elastic force of the reset member 32, the clamping protrusion 33 disengages from the clamping groove 34, thus unlocking the plug 21.

[0041] It can be understood that the socket 11 is used to receive the insertion of the plug post 22. The plug 21 is a standard plug for plugging into a socket, such as a two-pin or three-pin plug. The plug post 22 is used for mechanical insertion into the socket 11 on the housing 1.

[0042] The sliding member 31 can slide on the housing 1 and is reset by the reset member 32. When the plug post 22 is inserted into the socket 11, the clamping protrusion 33 will cooperate with the clamping groove 34 to form a clamping structure to maintain the stable position of the plug 21 in the socket 11. When the plug post 22 is fully inserted into the socket 11 and the clamping is completed with the clamping device 3, the conductive pin 41 will accurately insert into the conductive socket 42 to establish a stable electrical connection.

[0043] When the user inserts the plug 21 into the socket 11 on the housing 1, on the one hand, the plug post 22 is aligned with and inserted into the conductive jack 42, and on the other hand, the snap projection 33 will also contact the snap groove 34. When the plug 21 is inserted in place, the slider 31 automatically slides under the action of the reset member 32, so that the snap projection 33 is snapped into a predetermined position within the snap groove 34, completing the position locking of the plug 21. In this way, a reliable electrical connection is formed between the conductive pin 41 and the conductive jack 42, ensuring the stable transmission of electricity. At the same time, the position of the plug 21 is firmly locked by the tight fit between the snap projection 33 and the snap groove 34.

[0044] When the user can push the slider 31 to overcome the elastic force of the reset member 32, causing the slider 31 to slide in the reverse direction, the snap projection 33 is disengaged from the snap groove 34, releasing the snap state. After unlocking, the user can easily pull out the plug 21 from the socket 11.

[0045] As Figures 1 to 5 shown, in some embodiments of the mobile power supply 10, the snap device 3 further includes a plurality of guide posts 35 and a plurality of guide holes 36. At least one guide post 35 is provided in each guide hole 36. When the slider 31 slides, the guide post 35 slides within the guide hole 36; each guide post 35 is provided within the housing 1, and each guide hole 36 is formed on the slider 31.

[0046] It can be understood that the guide posts 35 are provided within the housing 1, and the number can be two or more. Each guide post 35 is vertically fixed within the housing 1, and its length and diameter need to match the guide hole 36. The guide holes 36 are formed on the slider 31, and the number can be one or more. The size and shape of each guide hole 36 need to match the guide post 35 to ensure that the guide post 35 can smoothly slide within the guide hole 36.

[0047] It should be noted that when the slider 31 is pushed to slide, the guide post 35 will slide within the guide hole 36. The cooperation between the guide hole 36 and the guide post 35 ensures that the slider 31 moves smoothly along the preset path, preventing the slider 31 from shifting or wobbling during the sliding process. The cooperation between the guide post 35 and the guide hole 36 ensures the precise alignment between the snap projection 33 and the snap groove 34, enhancing the stability of the connection.

[0048] As Figures 3 to 5 shown, in some embodiments of the mobile power supply 10, the snap device 3 further includes a plurality of guide posts 35 and a plurality of guide holes 36. At least one guide post 35 is provided in each guide hole 36. When the slider 31 slides, the guide post 35 slides within the guide hole 36; each guide post 35 is provided on the slider 31, and each guide hole 36 is formed within the housing 1.

[0049] Understandably, referring to the content of the foregoing embodiments, it can be seen that the guide posts 35 and the guide holes 36 in this embodiment also ensure the precise alignment between the clamping protrusions 33 and the clamping grooves 34, and enhance the stability of the connection. The difference between this embodiment and the foregoing embodiments lies in that the guide posts 35 and the guide holes 36 are arranged on different components.

[0050] As Figures 3 to 5 shown, in some embodiments of the mobile power supply 10, the clamping device 3 further includes a guide member 37 and a plurality of guide threaded members 38. Each guide threaded member 38 passes through the housing 1, and each guide threaded member 38 passes through each guide post 35 one by one and is screwed onto the guide member 37, so that the sliding member 31 is limited between the guide member and the inner wall of the housing 1.

[0051] Understandably, the guide member 37 is used to jointly define the position of the sliding member 31 with the inner wall of the housing 1. The guide threaded member 38 is used to fix the guide member 37 to the housing 1.

[0052] As Figure 3 shown, in some embodiments of the mobile power supply 10, an avoidance hole 12 is formed on the side wall of the socket 11, the clamping protrusion 33 is arranged on the sliding member 31, and the clamping protrusion 33 passes through the avoidance hole 12.

[0053] Understandably, the avoidance hole 12 is used to provide a moving space for the clamping protrusion 33, so as to prevent the clamping protrusion 33 from being stuck on the side wall of the socket 11 and causing the sliding member 31 to be stuck.

[0054] As Figures 3 to 5 shown, in some embodiments of the mobile power supply 10, the clamping groove 34 is located on the plug post 22; the clamping groove 34 includes a guiding groove 341, a guiding groove 342 and a clamping groove 343 that are sequentially connected. The guiding groove 341 is located at the edge of the plug post 22, and the groove width of the guiding groove 341 gradually decreases in the direction close to the guiding groove 342. The guiding groove 342 is recessed in the groove width direction to form the clamping groove 343.

[0055] Understandably, the groove width of the guiding groove 341 gradually decreases in the direction close to the guiding groove 342. Such a design helps to guide the clamping protrusion 33 to smoothly enter the clamping groove 34, and even if there is a slight deviation in the insertion angle, it can be corrected by the guiding groove 341. The groove width of the guiding groove 342 is relatively stable and is used to guide the clamping protrusion 33 into the clamping groove 343. The clamping groove 343 is located at the end of the guiding groove 342, has a narrow groove width, and is recessed in the groove width direction, and is used to firmly clamp the clamping protrusion 33 to ensure the stable connection after the plug 21 is inserted.

[0056] As Figure 3 shown, in some embodiments of the mobile power supply 10, a positioning arc surface 331 is provided on the clamping protrusion 33.

[0057] Understandably, the alignment arc surface 331 is used to contact the edge of the insertion groove 341 during the insertion process, guiding the snap projection 33 to accurately align with the snap groove 34. The presence of the alignment arc surface 331 helps to reduce the frictional force during insertion, ensuring that the snap projection 33 can smoothly enter the snap groove 34.

[0058] As Figure 2 shown, in some embodiments of the mobile power supply 10, a profiling groove 13 is further formed on the housing 1, and the profiling groove 13 is adapted to the plug 21.

[0059] Understandably, the profiling groove 13 is located on the housing 1, and its shape matches the outer shape of the plug 21. The design of the profiling groove 13 helps to ensure the accurate position of the plug 21 during insertion and keeps it stable after insertion.

[0060] As Figure 1 and Figure 2 shown, in some embodiments of the mobile power supply 10, a keyhole 14 is formed on the housing 1, and the snap device 3 further includes a key 39. The key 39 is disposed on the sliding member 31, and the key 39 is exposed in the keyhole 14.

[0061] Understandably, the position of the keyhole 14 corresponds to the key 39 on the sliding member 31, so that the key 39 can be exposed in the keyhole 14. The key 39 is disposed on the sliding member 31, and its top is exposed in the keyhole 14, facilitating direct operation by the user. The key 39 is connected to the sliding member 31. Pressing the key 39 can drive the sliding member 31 to slide, thereby realizing the unlocking function. The setting of the key 39 makes the unlocking process of the product more intuitive and convenient. The user does not need to find a specific operation point and can directly press the key to unlock the plug 21.

[0062] As Figure 5 shown, in some embodiments of the mobile power supply 10, the length extension direction of the sliding member 31 is consistent with the width direction of the housing 1.

[0063] Understandably, the length extension direction of the sliding member 31 is the sliding direction of the sliding member 31, so that the sliding direction of the sliding member 31 is consistent with the width direction of the housing 1. In this way, it can prevent the space required for the sliding of the sliding member 31 from interfering with the position of the components inside the housing 1, making the mobile power supply 10 more compactly arranged.

[0064] As Figure 1 shown, the pressing direction D1 of the key 39 is perpendicular to the insertion direction D2 of the plug 21.

[0065] It can be understood that the pressing direction D1 is perpendicular to the insertion direction D2, which can avoid interference between the space required for the movement of the button 39 and the space required for the insertion of the plug 21, so that the product can be designed to be more compact, and the portability and energy density can be optimized.

[0066] like Figures 2 to 5 As shown, in some embodiments of the mobile power supply 10, the mobile power supply 10 also includes a battery 8, a circuit board 5, a power button 6 and a power cord 7. The battery and the circuit board 5 are both arranged in the shell 1, the power button 6 is slidably arranged on the shell 1, and the circuit board 5 is electrically connected to the battery 8, the power button 6 and the power cord 7 respectively. A charging head 71 is provided on the power cord 7.

[0067] It is understandable that the battery is usually a lithium-ion battery or a lithium polymer battery, and the appropriate battery type is selected according to the capacity and design requirements. The circuit board 5 is responsible for managing the battery charging and discharging process, power detection and other functions. The circuit board 5 is electrically connected to the battery, the power button 6 and the power cord 7 respectively to realize the control of the mobile power supply and the power supply of the power cord 7. The power button 6 is slidably set on the shell 1 and is used to start or turn off the mobile power supply. The user can turn on or off the mobile power supply by pressing the power button 6 to facilitate charging the device. The power cord 7 is connected to the circuit board 5 for charging the mobile device. A charging head 71 is provided on the power cord 7, and the charging head 71 can be equipped with different types of interfaces according to different application scenarios, such as USB, Type-A, Type-C, etc.

[0068] It should be noted that the number of power cords 7 can be set to one or more. When the number of power cords 7 is configured to be multiple, each power cord 7 can be further configured with a charging head 71 with a different interface type.

[0069] The implementation of this utility model has the following beneficial effects:

[0070] This utility model relates to a mobile power supply. By providing a plug-in device and a latching device, the user can easily insert and remove a plug from a socket on a housing without the need for additional tools, significantly improving assembly and disassembly convenience. The interaction between the latching protrusion and the latching groove, as well as the elastic force of the reset element, ensures that the plug will not loosen or fall off due to external forces during normal use, effectively enhancing the stability of the connection. The user simply pushes a sliding member to lock and unlock the plug, making the operation simple and quick, avoiding the inconvenience caused by the complex locking mechanism in traditional designs.

[0071] The solution of the present utility model has been described in detail above with reference to the accompanying drawings. In the above embodiments, the descriptions of each embodiment have their own focuses. For parts not described in detail in a certain embodiment, reference may be made to the relevant descriptions of other embodiments. Those skilled in the art should also know that the actions and modules involved in the specification are not necessarily essential to the present utility model. In addition, it can be understood that the steps in the method embodiments of the present utility model can be adjusted, combined, and deleted according to actual needs, and the modules in the device embodiments of the present utility model can be combined, divided, and deleted according to actual needs.

[0072] The various embodiments of the present utility model have been described above. The above description is exemplary and not exhaustive, and is also not limited to the disclosed embodiments. Many modifications and variations will be obvious to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The choice of terms used herein is intended to best explain the principles of the embodiments, the practical application, or the improvement of the technology in the market, or to enable other ordinary skill in the art to understand the embodiments disclosed herein.

Claims

1. A mobile power supply, characterized in that: include: a housing, wherein a socket is provided on the housing; A plug-in device, comprising a plug and a plug post, wherein the plug post is provided on the plug; A clamping device, the clamping device comprising a sliding member, a reset member, a clamping protrusion and a clamping groove, the sliding member being slidably disposed on the housing, the reset member being drivingly connected to the sliding member, one of the clamping protrusion and the clamping groove being disposed on the plug post, and the other of the clamping protrusion and the clamping groove being disposed in the socket; and A conductive device, the conductive device comprising a conductive pin and a conductive socket, one of the conductive pin and the conductive socket being disposed on the plug post, and the other of the conductive pin and the conductive socket being disposed in the socket; In which, when the plug post is detachably inserted into the socket, the conductive pin is detachably inserted into the conductive socket, and the reset member drives the sliding member to slide, so that the engaging protrusion is engaged with the engaging groove to lock the position of the plug in the socket, and then the conductive pin is inserted and electrically connected to the conductive socket; when the sliding member overcomes the elastic force of the reset member and slides, the engaging protrusion disengages from the engaging groove, thereby unlocking the plug.

2. The mobile power supply according to claim 1, characterized in that: The clamping device further includes a plurality of guide posts and a plurality of guide holes, each of the guide holes being provided with at least one guide post, and when the sliding member slides, the guide post slides in the guide hole; Wherein, each of the guide posts is disposed in the housing, and each of the guide holes is formed on the sliding member; or Each of the guide posts is arranged on the sliding member, and each of the guide holes is opened in the shell.

3. The mobile power supply according to claim 2, characterized in that: The clamping device also includes a guide member and a plurality of guide screw members, each of which is passed through the shell, and each of the guide screw members is passed through each of the guide columns and is screwed onto the guide member, so that the sliding member is limited between the guide member and the inner wall of the shell.

4. The mobile power supply according to claim 1, characterized in that: A position-avoiding hole is provided on the side wall of the socket, the clamping protrusion is provided on the sliding member, and the clamping protrusion passes through the position-avoiding hole.

5. The mobile power supply according to claim 1, characterized in that: The snap-in slot is located on the plug post; The snap-fitting groove includes an introduction groove, a guide groove and a fixing groove connected in sequence. The introduction groove is located at the edge of the plug column, and the groove width of the introduction groove gradually decreases along the direction approaching the guide groove. The guide groove is recessed in the groove width direction to form the fixing groove.

6. The mobile power supply according to claim 1 or 5, characterized in that: The clamping protrusion is provided with an alignment arc surface.

7. The mobile power supply according to claim 1, characterized in that: The shell is also provided with a contoured groove, which is adapted to the plug.

8. The mobile power supply according to claim 1, characterized in that: A key hole is provided on the shell, and the clamping device further comprises a button, which is arranged on the sliding member and exposed in the key hole.

9. The mobile power supply according to claim 8, characterized in that: The length extension direction of the sliding member is consistent with the width direction of the housing; and / or The pressing direction of the button is perpendicular to the insertion direction of the plug.

10. The mobile power supply according to claim 1, characterized in that: The mobile power supply also includes a battery, a circuit board, a power button and a power cord. The battery and the circuit board are both arranged in the shell. The power button is slidably arranged on the shell. The circuit board is electrically connected to the battery, the power button and the power cord respectively. A charging head is provided on the power cord.