Small volume charging strip

Abstract

The utility model discloses a small volume charging socket strip, it includes shell, AC socket assembly, AC input seat, power supply circuit board and a plurality of DC output seat, sets up AC input seat and DC output seat corresponding in the front end surface and tail end surface of flat shell, and AC jack is located on the upper surface of shell, realizes the thorough separation of each function interface on the physical space, effectively solves the traditional interface fighting problem, completely avoids the mutual interference between plugs. Through being equipped with the plug-in convex part and the inside heightening portion corresponding formation for accommodating vertical insertion's ACAC socket assembly on the shell, make the socket strip whole can keep flat, provide enough vertical space in the place that needs simultaneously. The power supply circuit board is laid from front to back, and the heat dissipation area is big, avoids the concentration of heat, and is ingeniously provided with the avoidance mouth to give out the space to satisfy the vertical installation requirement of AC socket assembly, do not interfere with each other, and the body is small and exquisite, saves the desktop space, and the appearance is portable.

Description

Technical Field

[0001] This utility model relates to the field of charger technology, specifically to a small-volume charging power strip. Background Technology

[0002] Currently, with the widespread use of mobile smart devices, laptops, smart wearable devices, and other electronic products, the demand for users to charge multiple devices simultaneously via DC is increasing. Traditional power strips (or extension cords) typically only provide AC outlets, requiring users to use separate AC-DC power adapters (commonly known as "charging heads") for each device to convert AC power to DC power before charging. This not only leads to cluttered desktop cables and occupies space in multiple AC outlets, but also causes inconvenience and wastes resources.

[0003] To meet this demand, charging power strips integrating DC output modules (such as USB-A and USB-C interfaces) have emerged on the market. These products have the AC-DC conversion circuit built-in, allowing users to directly charge their devices using a data cable without an external adapter, greatly improving convenience. However, existing integrated charging power strips still have several shortcomings in their structural design. First, to accommodate the AC socket module, DC conversion circuit board, and multiple DC output interfaces, the product size is often quite large, especially in the thickness direction, which contradicts the current consumer preference for a clean and space-saving desktop. Second, a common layout places both the AC socket and DC output interfaces on the same wide side (top surface) of the power strip. This layout has a significant drawback: when a large AC power adapter is inserted, it will block adjacent AC sockets or DC output interfaces, preventing these interfaces from being fully utilized, causing interface interference, and reducing the product's practicality and user experience. Utility Model Content

[0004] To address the aforementioned shortcomings, the purpose of this utility model is to provide a small-sized charging power strip that features a reasonable structural design, saves space, and is easy to use.

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

[0006] A compact charging power strip includes a housing, an AC socket assembly, an AC input socket, a power circuit board, and several DC output sockets. The housing is flat, with the AC input socket located on the front end face and the several DC output sockets arranged side-by-side on the rear end face. The power circuit board is located inside the housing, extending from the front end to the rear end and electrically connected to the AC input and DC output sockets. The upper surface of the housing protrudes upward near the AC input socket to form a plug-in protrusion, while simultaneously increasing the height of the corresponding internal position to form a raised section. The raised section has a mounting hole for mounting the AC socket assembly. The power circuit board has a clearance opening corresponding to the mounting hole. The AC socket assembly is disposed within the mounting hole. The plug-in protrusion has AC socket holes corresponding to the AC socket assembly.

[0007] In a preferred embodiment of this utility model, the AC input socket includes an insulating rubber base and two metal terminals arranged side-by-side on the insulating rubber base. The front end of each metal terminal is a cylindrical insertion portion, and the rear end is a flat welding portion. A protrusion forming a positioning plate is provided on the outer wall of the insulating rubber base. A positioning seat adapted to the positioning plate is provided inside the housing. The positioning plate is fixed to the positioning seat by screws. An isolation plate is provided between the welding portions of the two metal terminals corresponding to the insulating rubber base. The isolation plate prevents the risk of short circuits between the metal terminals caused by dust, moisture, or accidental conductive materials, improving usability and installation.

[0008] In a preferred embodiment of this invention, the AC socket assembly includes two metal clips, each folded in half at the middle to form two clamping arms. Each clamping arm has an integrally formed, upwardly extending and mutually converging claw portion, with a slot formed between opposing claw portions. Electrical connection is achieved when the plug is inserted into the slot.

[0009] In a preferred embodiment of this invention, each clamping arm has two clamping claws. This increases the number of AC sockets, satisfying the need for connecting two plugs.

[0010] In a preferred embodiment of this invention, the inner wall of the gripper portion is provided with a locking protrusion. The locking protrusion can engage with the groove on the surface of the plug or provide greater friction.

[0011] In a preferred embodiment of this invention, one end of the metal clip extends to the bottom surface of the power circuit board and protrudes upward to form a solder foot. The power circuit board has solder holes through which the solder foot passes. The metal clip extends directly out of the solder foot and passes through the solder holes on the power circuit board for soldering.

[0012] In a preferred embodiment of this invention, the mounting hole seat is provided with a mounting cavity for inserting two opposing gripper portions, ensuring the positional accuracy of the gripper portions.

[0013] In a preferred embodiment of this utility model, the bottom periphery of the mounting hole seat is provided with a positioning groove, and the bottom surface of the outer shell is provided with a support platform corresponding to the mounting hole seat to support the AC socket assembly. The surface of the support platform is provided with a positioning flange that matches the positioning groove. The positioning flange engages with the positioning groove at the bottom of the mounting hole seat to ensure that it cannot move horizontally, resulting in a good assembly effect.

[0014] In a preferred embodiment of this utility model, the outer casing includes an upper casing and a bottom cover that covers the upper casing. The upper casing has corner posts and positioning posts. The power circuit board has mounting holes corresponding to the corner posts and positioning holes adapted to the positioning posts. The bottom cover has a low-profile tongue and a high-profile tongue along its edge from the outside to the inside. The upper casing has an outer slot adapted to the low-profile tongue and an inner slot adapted to the high-profile tongue. The bottom cover uses a double-slot structure with low-profile and high-profile tongues to engage tightly with the upper casing.

[0015] In a preferred embodiment of this invention, a display module is further included. The number of display modules corresponds to the number of DC output sockets, and each display module is positioned on the housing corresponding to its respective DC output socket. Each DC output socket is equipped with an independent display module to display the charging status of the corresponding interface in real time.

[0016] The beneficial effects of this utility model are as follows: The utility model has a reasonable structural design, with the AC input socket and DC output socket respectively positioned on the front and rear faces of the flat outer shell, while the AC socket is located on the upper surface of the shell. This achieves complete physical separation of the various functional interfaces, effectively solving the problem of traditional interface interference and completely avoiding mutual interference between plugs. By providing a plug-in protrusion on the outer shell and an internal raised portion to form an AC socket assembly for vertical insertion, the power strip maintains its overall flat shape while providing sufficient vertical space where needed. The power circuit board is laid flat from front to back, making the electronic components more dispersed, increasing the heat dissipation area, avoiding heat concentration, and cleverly providing clearance to meet the vertical installation requirements of the AC socket assembly without interference. Furthermore, the utility model is flat overall with only local protrusions, making it compact, saving desktop space, and is both aesthetically pleasing and portable.

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0018] Figure 1This is a three-dimensional structural diagram of the present invention.

[0019] Figure 2 This is a structural diagram of the disassembled part of this utility model. Figure 1 .

[0020] Figure 3 This is a structural diagram of the disassembled part of this utility model. Figure 2 .

[0021] Figure 4 This is a schematic diagram of the upper shell structure in this utility model. Detailed Implementation

[0022] See Figures 1 to 4 This embodiment provides a small-volume charging power strip, which includes a housing 1, an AC socket assembly 2, an AC input socket 3, a power circuit board 4, and several DC output sockets 5.

[0023] The outer casing 1 has a flat overall shape. The AC input socket 3 is located on the front end face of the outer casing 1, and several DC output sockets 5 are arranged side by side on the flat rear end face. The power circuit board 4 is located inside the outer casing 1 and extends from the front end to the rear end of the outer casing 1, and is electrically connected to the AC input socket 3 and the DC output sockets 5 respectively. Specifically, the outer casing 1 includes an upper casing 11 and a bottom cover 12 that covers the upper casing 11. The corner of the upper casing 11 is provided with a post 111 and a positioning post 112. The power circuit board 4 is provided with mounting holes corresponding to the post 111 and positioning holes that are adapted to the positioning post 112. The edge of the bottom cover 12 is provided with a short tongue 121 and a high tongue 122 from the outside to the inside. The upper casing 11 is provided with an outer slot adapted to the short tongue 121 and an inner slot adapted to the high tongue 122. The power circuit board 4 is secured to the post 111 with screws and its movement is restricted by the positioning post 112, completing the internal assembly. Finally, the tongue of the bottom cover 12 is precisely aligned with the slot of the upper housing 11, and pushed in to close the cover. The bottom cover 12 uses a dual slot structure with a short tongue 121 and a high tongue 122 to engage with the upper housing 11, ensuring a tight fit.

[0024] The AC input socket 3 includes an insulating base 31 and two metal terminals 32 arranged side-by-side on the insulating base 31. The front end of each metal terminal 32 is a cylindrical insertion portion, and the rear end is a flat soldering portion. The cylindrical insertion portion ensures good contact with the power cord plug, and the flat soldering portion facilitates reliable soldering to the PCB board. A protrusion forming a positioning plate 311 is provided on the outer wall of the insulating base 31. A positioning seat 123 adapted to the positioning plate 311 is provided inside the outer casing 1. The positioning plate 311 is fixed to the positioning seat 123 by screws. An isolation plate 312 is provided between the soldering portions of the two metal terminals 32 on the insulating base 31. The isolation plate 312 prevents short circuits between the metal terminals 32 caused by dust, moisture, or accidental conductive materials, improving usability and installation. During installation, align the positioning plate 311 of the AC input socket 3 module with the positioning seat 123 inside the outer casing 1, and tighten it with screws to complete the electrical and structural connection. This enables modular installation of the AC input socket 3, making production assembly more convenient and improving production efficiency.

[0025] The upper surface of the outer casing 1 protrudes upward near the AC input socket 3 to form a plug-in protrusion 113, and at the same time, the height of the corresponding position inside it is increased to form a heightening part 114. The heightening part 114 is provided with a mounting hole 115 for mounting the AC socket assembly 2. The power circuit board 4 is provided with a clearance opening 41 corresponding to the mounting hole 115. The AC socket assembly 2 is disposed in the mounting hole 115. The plug-in protrusion 113 is provided with an AC socket 1131 corresponding to the AC socket assembly 2.

[0026] Specifically, the AC socket assembly 2 includes two metal clips, each folded in half at the middle to form two clamping arms 21. Each clamping arm 21 has an integrally formed, upwardly extending and mutually abutting claws 22, forming a slot between opposing claws 22. Preferably, each clamping arm 21 has two claws 22. This increases the number of AC sockets 1131, meeting the needs of two plugs. The mounting hole seat 115 has a mounting cavity 1151 for inserting the opposing claws 22. The mounting cavity 1151 restricts the left, right, front, and back freedom of the claws 22, ensuring the positional accuracy of the claws 22. When the plug is inserted into the slot, the claws 22 are pushed open, and the clamping arms 21 generate a continuous clamping force due to elastic deformation, achieving electrical connection. Preferably, a locking protrusion is also provided on the inner wall of the claws 22. The locking tabs can engage with the grooves on the plug surface or provide greater friction, preventing the plug from coming loose due to cable pulling, resulting in a good fit.

[0027] To improve the connection between the metal clip and the power circuit board 4, one end of the metal clip extends to the bottom surface of the power circuit board 4 and protrudes upward to form a solder foot 23. The power circuit board 4 has solder holes 42 through which the solder foot 23 passes. The solder foot 23 on the metal clip passes through the solder holes 42 on the power circuit board 4 for soldering. Current flows directly from the power circuit board 4 to the metal clip through the solder foot 23, eliminating the need for additional wire connections, resulting in higher connection reliability and a more compact structure.

[0028] See Figure 4 A positioning groove 1152 is provided at the periphery of the bottom surface of the mounting hole seat 115. A support platform 124 is provided on the bottom surface of the outer shell 1 corresponding to the mounting hole seat 115 to support the AC socket assembly 2. A positioning flange that matches the positioning groove 1152 is provided on the surface of the support platform 124. During assembly, the AC socket assembly 2 is placed into the mounting hole seat 115, with its bottom resting on the support platform 124. The support platform 124 supports the entire AC socket assembly 2 from the bottom upwards, and the positioning flange engages with the positioning groove 1152 at the bottom of the mounting hole seat 115, ensuring that it cannot move horizontally and resulting in a good assembly effect.

[0029] Preferably, the small-volume charging power strip of this utility model also includes a display module 6, the number of which matches the number of DC output sockets 5. In this embodiment, there are three DC output sockets 5, specifically one USB-A and two USB-C. That is, there are three display modules 6, which can be soldered side by side on the same display PCB. The display modules 6 are positioned on the housing 1 corresponding to the positions of their respective DC output sockets 5. Each DC output socket 5 is equipped with an independent display module 6, which is connected to the power circuit board 4 via the display PCB to display the charging status of the corresponding interface in real time, such as standby, charging power, etc.

[0030] In use, since the AC input socket 3 is located on the front end of the housing 1, the DC output socket 5 is located on the rear end of the housing 1, and the AC socket 1131 is located on the upper surface of the housing 1, the various functional interfaces are completely separated in physical space, effectively solving the problem of traditional interfaces interfering with each other and completely avoiding mutual interference between plugs.

[0031] In terms of appearance, this utility model is flat overall with only local protrusions, making it compact, saving desktop space, and aesthetically pleasing.

[0032] Based on the disclosure and teachings of the above specification, those skilled in the art can make changes and modifications to the above embodiments. Therefore, this utility model is not limited to the specific embodiments described above, and any obvious improvements, substitutions, or modifications made by those skilled in the art based on this utility model are within the protection scope of this utility model. Furthermore, although some specific terms are used in this specification, these terms are only for convenience of explanation and do not constitute any limitation on this utility model. As described in the above embodiments of this utility model, other plug-in structures obtained using the same or similar structures are all within the protection scope of this utility model.

Claims

1. A compact charging power strip, comprising a housing and an AC socket assembly, characterized in that: It also includes an AC input socket, a power circuit board, and several DC output sockets. The housing is flat, with the AC input socket located on the front end face of the housing. Several DC output sockets are arranged side by side on the rear end face of the flat housing. The power circuit board is located inside the housing and extends from the front end to the rear end of the housing, and is electrically connected to the AC input socket and DC output sockets accordingly. The upper surface of the housing protrudes upward near the AC input socket to form a plug-in protrusion, and at the same time, the height of the corresponding position inside the housing is increased to form a raised part. The raised part is provided with a mounting hole for mounting the AC socket assembly. The power circuit board is provided with a clearance opening corresponding to the mounting hole. The AC socket assembly is disposed in the mounting hole. The plug-in protrusion is provided with an AC socket corresponding to the AC socket assembly.

2. The compact charging power strip according to claim 1, characterized in that, The AC input socket includes an insulating rubber base and two metal terminals arranged side by side on the insulating rubber base. The front end of the metal terminals is a cylindrical insertion part, and the rear end is a flat welding part. The outer wall of the insulating rubber base is provided with a protrusion forming a positioning plate. The housing is provided with a positioning seat adapted to the positioning plate. The positioning plate is fixed to the positioning seat by screws. The insulating rubber base is provided with an isolation plate between the welding parts of the two metal terminals.

3. The compact charging power strip according to claim 1, characterized in that, The AC socket assembly includes two metal clips, the middle of which is folded to form two clamping arms. The two clamping arms are integrally formed with upwardly extending and mutually abutting claws, and a slot is formed between the two opposing claws.

4. The small-volume charging power strip according to claim 3, characterized in that, Each of the aforementioned clamping arms has two clamping claws.

5. The compact charging power strip according to claim 3, characterized in that, The inner wall of the gripper portion is provided with a locking protrusion.

6. The compact charging power strip according to claim 3, characterized in that, One end of the metal clip extends to the bottom surface of the power circuit board and protrudes upward to form a solder foot. The power circuit board has solder holes through which the solder foot passes.

7. The compact charging power strip according to claim 3, characterized in that, The mounting hole seat is provided with a mounting cavity for inserting two opposing gripper portions.

8. The compact charging power strip according to claim 3, characterized in that, The mounting hole seat has a positioning groove at the periphery of its bottom surface, and the bottom surface of the housing has a support platform corresponding to the mounting hole seat to support the AC socket assembly. The surface of the support platform has a positioning flange that matches the positioning groove.

9. The compact charging power strip according to claim 1, characterized in that, The outer casing includes an upper casing and a bottom cover that fits over the upper casing. The upper casing has a corner post and a positioning post. The power circuit board has mounting holes corresponding to the pins and positioning holes that fit the positioning posts. The bottom cover has a short tongue and a high tongue on its edge from the outside to the inside. The upper casing has an outer slot that fits the short tongue and an inner slot that fits the high tongue.

10. The compact charging power strip according to any one of claims 1-9, characterized in that, It also includes display modules, the number of which is consistent with the number of DC output sockets, and the display modules are positioned on the housing corresponding to the DC output sockets they are adapted to.

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